Vibration-reducing structure for five-compressing-chamber diaphragm pump

Abstract

A vibration-reducing structure for five-compressing-chamber diaphragm pump features a pump head body and a diaphragm membrane. The pump head body includes five operating holes and a basic curved dent circum-disposed around the upper side of each operating hole. The diaphragm membrane includes five equivalent piston acting zones such that each of which has a acting zone hole with an annular positioning protrusion for each acting zone hole and a basic curved protrusion circum-disposed around each concentric annular positioning protrusion in corresponding position with each mating basic curved dent in the pump head body. Thereby, five basic curved protrusions completely insert into corresponding five basic curved dents with a short length of moment arm in generating less torque, which is obtained by length of moment arm multiplying a constant acting force and primarily causes adverse vibration. With less torque, the vibration strength of the five-compressing-chamber diaphragm pump is substantially reduced.

What is claimed is: 
     
         1 . A vibration-reducing structure for five-compressing-chamber diaphragm pump comprises a motor with an output shaft, a motor upper chassis, a wobble plate with integral protruding cam-lobed shaft, an eccentric roundel mount, a pump head body, a diaphragm membrane, five pumping pistons, a piston valvular assembly and a pump head cover, wherein:
 Said motor upper chassis includes a bearing to be run through by the output shaft of the motor, an upper annular rib ring with several fastening bores disposed therein in circumferential rim evenly;   Said wobble plate with integral protruding cam-lobed shaft includes a shaft coupling hole run through by the corresponding motor output shaft of the motor;   Said eccentric roundel mount includes a central bearing at the bottom thereof for corresponding wobble plate with integral protruding cam-lobed shaft, five-eccentric roundels disposed thereon in circumferential location evenly such that each eccentric roundel has a screw-threaded bore and an annular positioning dent formed on the top face thereof respectively in horizontal flush;   Said pump head body, which covers on the upper annular rib ring of the motor upper chassis to encompass the wobble plate with integral protruding cam-lobed shaft and eccentric roundel mount therein, includes five operating holes disposed therein in circumferential location evenly such that each operating hole has inner diameter slightly bigger than outer diameter of the eccentric roundel in the eccentric roundel mount for receiving each corresponding eccentric roundel respectively, a lower annular flange formed thereunder for mating with corresponding upper annular rib ring of the motor upper chassis, several fastening bores disposed thereat in circumferential location evenly;   Said diaphragm membrane, which is extrude-molded by semi-rigid elastic material and to be placed on the pump head body, includes a pair of parallel outer raised brim and inner raised brim as well as five evenly spaced radial raised partition ribs such that each end of radial raised partition rib connects with the joint of two adjacent inner raised brims, five equivalent piston acting zones are formed and partitioned by the radial raised partition ribs, wherein each piston acting zone has an acting zone hole created therein in correspondence with each screw-threaded bore in the screw-threaded bore of the eccentric roundel mount respectively, and an annular positioning protrusion for each acting zone hole is formed at the bottom side of the diaphragm membrane;   Each said pumping piston, which is respectively disposed in each corresponding piston acting zones of the diaphragm membrane, has a tiered hole run through thereof, by running fastening screw through the tiered hole of each pumping piston and the acting zone hole of each corresponding piston acting zone in the diaphragm membrane, the diaphragm membrane and five pumping pistons are securely screwed into each screw-threaded bore of corresponding five eccentric roundels in the eccentric roundel mount;   Said piston valvular assembly, which suitably covers on the diaphragm membrane, includes a downward outlet raised brim to insert between the outer raised brim and inner raised brim in the diaphragm membrane, a central round outlet mount composed of a central positioning bore with five equivalent sectors such that each of sectors contains a group of multiple evenly circum-located outlet ports, a T-shaped plastic anti-backflow valve with a central positioning shank, and five circumjacent inlet mounts such that each of which includes a group of multiple evenly circum-located inlet ports and a inverted central piston disk respectively so that each piston disk serves as a valve for each corresponding group of multiple inlet ports, wherein the central positioning shank of the plastic anti-backflow valve mates with the central positioning bore of the central outlet mount such that each group of multiple outlet ports of each sector in the central round outlet mount are communicable with each corresponding inlet mount, and a hermetical preliminary-compressing chamber is formed between each inlet mount and each corresponding piston acting zone in the diaphragm membrane upon the downward outlet raised brim having inserted between the outer raised brim and inner raised brim in the diaphragm membrane such that one end of each preliminary-compressing chamber is communicable with each corresponding group of multiple inlet ports;   Said pump head cover, which covers on the pump head body to encompass the piston valvular assembly, pumping piston and diaphragm membrane therein, includes a water inlet orifice, a water outlet orifice, and several fastening bores while a tiered rim and an annular rib ring are disposed in the bottom inside of said pump head cover such that the outer brim for the assembly of diaphragm membrane and piston valvular assembly can hermetically attach on the tiered rim upon the piston valvular assembly having covered the diaphragm membrane closely, wherein a high-compressing chamber is created between the inside cavity of the annular rib ring and the central outlet mount of the piston valvular assembly upon having the bottom of the annular rib ring closely covered on the brim of the central outlet mount; and   Characteristically, a basic curved dent is further circum-disposed around the upper side of each operating hole in the pump head body while a basic curved protrusion is further circum-disposed around each concentric annular positioning protrusion at the bottom side of the diaphragm membrane in corresponding position with each mating basic curved dent in the pump head body so that each basic curved protrusion at the bottom side of the diaphragm membrane completely inserts into each corresponding basic curved dent at the upper side of the pump head body upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the basic curved protrusions to the peripheral of the annular positioning protrusion in the diaphragm membrane is obtained.   
     
     
         2 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 1 , wherein each basic curved dent of the pump head body is adapted into a basic curved bore. 
     
     
         3 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 1 , wherein each basic curved dent in the pump head body and each corresponding basic curved protrusion in the diaphragm membrane are exchanged into a basic curved protrusion in the pump head body and a corresponding basic curved dent in the diaphragm membrane without affecting their mating condition so that each basic curved protrusion at the upper side of the pump head body completely inserts into each corresponding basic curved dent at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the basic curved dent to the peripheral of the annular positioning protrusion in the diaphragm membrane is obtained. 
     
     
         4 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 1 , wherein each basic curved dent in the pump head body is adapted into a linking five-curved dent to encompass all five operating hole while each corresponding basic curved protrusion in the diaphragm membrane is adapted into a linking five-curved protrusion in corresponding position with the linking four-curved dent in the pump head body to encompass all four annular positioning protrusions. 
     
     
         5 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 4 , wherein each linking five-curved dent of the pump head body  60  is adapted into a linking five-curved slit. 
     
     
         6 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 4 , wherein the linking five-curved dent in the pump head body and the corresponding linking five-curved protrusion in the diaphragm membrane are exchanged into a linking five-curved protrusion in the pump head body and a linking five-curved dent in the diaphragm membrane without affecting their mating condition so that the linking five-curved protrusion at the upper side of the pump head body completely inserts into the linking five-curved dent at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the linking five-curved dent to the peripheral of the annular positioning protrusion in the diaphragm membrane is obtained. 
     
     
         7 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 1 , wherein a second outer curved dent is further circum-disposed around each said basic curved dent in the pump head body while a second outer curved protrusion is further circum-disposed around each said basic curved protrusion in the diaphragm membrane in corresponding position with each mating second outer curved dent in the pump head body. 
     
     
         8 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 7 , wherein each pair of basic curved dent and second outer curved dent of the pump head body are adapted into a pair of basic curved bore and second outer curved bore. 
     
     
         9 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 7 , wherein each pair of basic curved dent and second outer curved dent in the pump head body and each corresponding pair of basic curved protrusion and second outer curved protrusion in the diaphragm membrane are exchanged into a pair of basic curved protrusion and second outer curved protrusion in the pump head body and a pair of corresponding basic curved dent and second outer curved dent in the diaphragm membrane without affecting their mating condition so that each pair of basic curved protrusion and second outer curved protrusion at the upper side of the pump head body completely insert into each corresponding pair of basic curved dent and second outer curved dent at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the basic curved dent to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained 
     
     
         10 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 1 , wherein an integral dented ring is further circum-disposed around each said operating hole in the pump head body while an integral protruded ring is further circum-disposed around each said annular positioning protrusion in the diaphragm membrane in corresponding position with each mating integral dented ring in the pump head body. 
     
     
         11 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 10 , wherein each integral dented ring of the pump head body is adapted into an integral perforated ring. 
     
     
         12 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 10 , wherein each integral dented ring in the pump head body and each corresponding integral protruded ring in the diaphragm membrane are exchanged into an integral protruded ring in the pump head body and a corresponding integral dented ring in the diaphragm membrane without affecting their mating condition so that each integral protruded ring at the upper side of the pump head body completely inserts into each corresponding integral dented ring at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane as well as a short length of moment arm from the integral dented ring to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained. 
     
     
         13 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 1 , wherein a group of curved dents are circum-disposed around each said operating hole in the pump head body while a group of curved protrusions are circum-disposed around each said annular positioning protrusion in the diaphragm membrane in corresponding position with each group of mating curved dents in the pump head body. 
     
     
         14 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 13 , wherein each group of curved dents of the pump head body are adapted into a group of curved slits. 
     
     
         15 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 13 , wherein each group of curved dents in the pump head body and each corresponding group of curved protrusions in the diaphragm membrane are exchanged into a group of curved protrusions in the pump head body and a group of corresponding curved dents in the diaphragm membrane without affecting their mating condition so that each group of curved protrusions at the upper side of the pump head body completely insert into each group of corresponding curved dents at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the curved dents to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained. 
     
     
         16 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 1 , wherein a group of round dents are circum-disposed around each said operating hole in the pump head body while a group of round protrusions are circum-disposed around each said annular positioning protrusion in the diaphragm membrane in corresponding position with each group of mating round dents in the pump head body. 
     
     
         17 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 16 , wherein each group of round dents in the pump head body are adapted into a group of round holes. 
     
     
         18 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 16 , wherein each group of round dents in the pump head body and each corresponding group of round protrusions in the diaphragm membrane are exchanged into a group of round protrusions in the pump head body and a group of corresponding round dents in the diaphragm membrane without affecting their mating condition so that each group of round protrusions at the upper side of the pump head body completely insert into each group of corresponding round dents at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the round dents to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained. 
     
     
         19 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 1 , wherein a group of square dents are circum-disposed around each said operating hole in the pump head body while a group of square protrusions are circum-disposed around each said annular positioning protrusion in the diaphragm membrane in corresponding position with each mating group of square dents in the pump head body. 
     
     
         20 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 19 , wherein each group of square dents in the pump head body are adapted into a group of square holes. 
     
     
         21 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 19 , wherein each group of square dents in the pump head body and each corresponding group of square protrusions in the diaphragm membrane are exchanged into a group of square protrusions in the pump head body and a group of corresponding square dents in the diaphragm membrane without affecting their mating condition so that each group of square protrusions at the upper side of the pump head body completely insert into each group of corresponding square dents at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the square dents to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained. 
     
     
         22 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 1 , wherein an integral dented ring is circum-disposed around the upper side of each operating hole and a linking five-curved dent is disposed to encompass all five integral dented rings in the pump head body while an integral protruded ring is circum-disposed around each concentric annular positioning protrusion and a linking five-curved protrusion is disposed to encompass all five integral protruded rings at the bottom side of the diaphragm membrane in corresponding position with the mating linking five-curved dent and five integral dented rings in the pump head body. 
     
     
         23 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 22 , wherein said linking five-curved dent and five integral dented rings in the pump head body are adapted into a linking five-curved slit and five integral perforated rings. 
     
     
         24 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 22 , wherein said linking five-curved dent and five integral dented rings in the pump head body and the corresponding linking five-curved protrusion and five integral protruded rings in the diaphragm membrane are exchanged into a linking five-curved protrusion and five integral protruded rings in the pump head body and a corresponding linking five-curved dent and five integral dented rings in the diaphragm membrane without affecting their mating condition so that the linking five-curved protrusion and five integral protruded rings at the upper side of the pump head body completely insert into the corresponding linking five-curved dent and five integral dented rings at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the integral dented ring to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained. 
     
     
         25 . A vibration-reducing structure for five-compressing-chamber diaphragm pump comprises a motor with an output shaft, a motor upper chassis, a wobble plate with integral protruding cam-lobed shaft, an eccentric roundel mount, a pump head body, a diaphragm membrane, five pumping pistons, a piston valvular assembly and a pump head cover, wherein
 Said motor upper chassis includes a bearing to be run through by the output shaft of the motor, an upper annular rib ring with several fastening bores disposed therein in circumferential rim evenly;   Said wobble plate with integral protruding cam-lobed shaft includes a shaft coupling hole run through by the corresponding motor output shaft of the motor;   Said eccentric roundel mount includes a central bearing at the bottom thereof for corresponding wobble plate with integral protruding cam-lobed shaft, five-eccentric roundels disposed thereon in circumferential location evenly such that each eccentric roundel has a screw-threaded bore and an annular positioning dent formed on the top face thereof respectively in horizontal flush;   Said pump head body, which covers on the upper annular rib ring of the motor upper chassis to encompass the wobble plate with integral protruding cam-lobed shaft and eccentric roundel mount therein, includes five operating holes disposed therein in circumferential location evenly such that each operating hole has inner diameter slightly bigger than outer diameter of the eccentric roundel in the eccentric roundel mount for receiving each corresponding eccentric roundel respectively, a lower annular flange formed thereunder for mating with corresponding upper annular rib ring of the motor upper chassis, several fastening bores disposed thereat in circumferential location evenly;   Said diaphragm membrane, which is extrude-molded by semi-rigid elastic material and to be placed on the pump head body, includes a pair of parallel outer raised brim and inner raised brim as well as five evenly spaced radial raised partition ribs such that each end of radial raised partition rib connects with the joint of two adjacent inner raised brims, five equivalent piston acting zones are formed and partitioned by the radial raised partition ribs, wherein each piston acting zone has an acting zone hole created therein in correspondence with each screw-threaded bore in the screw-threaded bore of the eccentric roundel mount respectively, and an annular positioning protrusion for each acting zone hole is formed at the bottom side of the diaphragm membrane;   Each said pumping piston, which is respectively disposed in each corresponding piston acting zones of the diaphragm membrane, has a tiered hole run through thereof, by running fastening screw through the tiered hole of each pumping piston and the acting zone hole of each corresponding piston acting zone in the diaphragm membrane, the diaphragm membrane and five pumping pistons are securely screwed into each screw-threaded bore of corresponding five eccentric roundels in the eccentric roundel mount;   Said piston valvular assembly includes a downward outlet raised brim to insert between the outer raised brim and inner raised brim in the diaphragm membrane, a central round outlet mount, five equivalent sector zones evenly distributed in the outlet mount such that each of sectors composed of a zone positioning bore, a T-shaped zone anti-backflow valve with a zone positioning shank as well as a group of multiple evenly circum-located outlet ports around each corresponding zone positioning bore, and five circumjacent inlet mounts such that each of which includes a group of multiple evenly circum-located inlet ports and a inverted central piston disk respectively so that each piston disk serves as a valve for each corresponding group of multiple inlet ports, wherein each zone positioning shank of the zone anti-backflow valve mates with the zone positioning bore of the central outlet mount such that each group of multiple outlet ports of each sector zone in the central round outlet mount are communicable with each corresponding inlet mount, and a hermetical preliminary-compressing chamber is formed between each inlet mount and each corresponding piston acting zone in the diaphragm membrane upon the downward outlet raised brim having inserted between the outer raised brim and inner raised brim in the diaphragm membrane such that one end of each preliminary-compressing chamber is communicable with each corresponding group of multiple inlet ports;   Said pump head cover, which covers on the pump head body to encompass the piston valvular assembly, pumping piston and diaphragm membrane therein, includes a water inlet orifice, a water outlet orifice, and several fastening bores while a tiered rim and an annular rib ring are disposed in the bottom inside of said pump head cover such that the outer brim for the assembly of diaphragm membrane and piston valvular assembly hermetically attaches on the tiered rim, wherein a high-pressured water chamber is configured between cavity formed by the inside wall of the annular rib ring and the central outlet mount of the piston valvular assembly by means of matching the bottom of the annular rib ring on the brim of the central outlet mount; and   Characteristically, a basic curved dent is further circum-disposed around the upper side of each operating hole in the pump head body while a basic curved protrusion is further circum-disposed around each concentric annular positioning protrusion at the bottom side of the diaphragm membrane in corresponding position with each mating basic curved dent in the pump head body so that each basic curved protrusion at the bottom side of the diaphragm membrane completely inserts into each corresponding basic curved dent at the upper side of the pump head body upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the basic curved protrusions to the peripheral of the annular positioning protrusion in the diaphragm membrane is obtained.   
     
     
         26 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 25 , wherein each basic curved dent of the pump head body is adapted into a basic curved bore. 
     
     
         27 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 25 , wherein each basic curved dent in the pump head body and each corresponding basic curved protrusion in the diaphragm membrane are exchanged into a basic curved protrusion in the pump head body and a corresponding basic curved dent in the diaphragm membrane without affecting their mating condition so that each basic curved protrusion at the upper side of the pump head body completely inserts into each corresponding basic curved dent at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the basic curved dent to the peripheral of the annular positioning protrusion in the diaphragm membrane is obtained. 
     
     
         28 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 25 , wherein each basic curved dent in the pump head body is adapted into a linking five-curved dent to encompass all five operating hole while each corresponding basic curved protrusion in the diaphragm membrane is adapted into a linking five-curved protrusion in corresponding position with the linking four-curved dent in the pump head body to encompass all four annular positioning protrusions. 
     
     
         29 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 28 , wherein each linking five-curved dent of the pump head body  60  is adapted into a linking five-curved slit. 
     
     
         30 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 28 , wherein the linking five-curved dent in the pump head body and the corresponding linking five-curved protrusion in the diaphragm membrane are exchanged into a linking five-curved protrusion in the pump head body and a linking five-curved dent in the diaphragm membrane without affecting their mating condition so that the linking five-curved protrusion at the upper side of the pump head body completely inserts into the linking five-curved dent at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the linking five-curved dent to the peripheral of the annular positioning protrusion in the diaphragm membrane is obtained. 
     
     
         31 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 25 , wherein a second outer curved dent is further circum-disposed around each said basic curved dent in the pump head body while a second outer curved protrusion is further circum-disposed around each said basic curved protrusion in the diaphragm membrane in corresponding position with each mating second outer curved dent in the pump head body. 
     
     
         32 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 31 , wherein each pair of basic curved dent and second outer curved dent of the pump head body are adapted into a pair of basic curved bore and second outer curved bore. 
     
     
         33 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 31 , wherein each pair of basic curved dent and second outer curved dent in the pump head body and each corresponding pair of basic curved protrusion and second outer curved protrusion in the diaphragm membrane are exchanged into a pair of basic curved protrusion and second outer curved protrusion in the pump head body and a pair of corresponding basic curved dent and second outer curved dent in the diaphragm membrane without affecting their mating condition so that each pair of basic curved protrusion and second outer curved protrusion at the upper side of the pump head body completely insert into each corresponding pair of basic curved dent and second outer curved dent at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the basic curved dent to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained 
     
     
         34 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 25 , wherein an integral dented ring is further circum-disposed around each said operating hole in the pump head body while an integral protruded ring is further circum-disposed around each said annular positioning protrusion in the diaphragm membrane in corresponding position with each mating integral dented ring in the pump head body. 
     
     
         35 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 34 , wherein each integral dented ring of the pump head body is adapted into an integral perforated ring. 
     
     
         36 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 34 , wherein each integral dented ring in the pump head body and each corresponding integral protruded ring in the diaphragm membrane are exchanged into an integral protruded ring in the pump head body and a corresponding integral dented ring in the diaphragm membrane without affecting their mating condition so that each integral protruded ring at the upper side of the pump head body completely inserts into each corresponding integral dented ring at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane as well as a short length of moment arm from the integral dented ring to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained. 
     
     
         37 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 25 , wherein a group of curved dents are circum-disposed around each said operating hole in the pump head body while a group of curved protrusions are circum-disposed around each said annular positioning protrusion in the diaphragm membrane in corresponding position with each group of mating curved dents in the pump head body. 
     
     
         38 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 37 , wherein each group of curved dents of the pump head body are adapted into a group of curved slits. 
     
     
         39 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 37 , wherein each group of curved dents in the pump head body and each corresponding group of curved protrusions in the diaphragm membrane are exchanged into a group of curved protrusions in the pump head body and a group of corresponding curved dents in the diaphragm membrane without affecting their mating condition so that each group of curved protrusions at the upper side of the pump head body completely insert into each group of corresponding curved dents at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the curved dents to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained. 
     
     
         40 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 25 , wherein a group of round dents are circum-disposed around each said operating hole in the pump head body while a group of round protrusions are circum-disposed around each said annular positioning protrusion in the diaphragm membrane in corresponding position with each group of mating round dents in the pump head body. 
     
     
         41 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 40 , wherein each group of round dents in the pump head body are adapted into a group of round holes. 
     
     
         42 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 40 , wherein each group of round dents in the pump head body and each corresponding group of round protrusions in the diaphragm membrane are exchanged into a group of round protrusions in the pump head body and a group of corresponding round dents in the diaphragm membrane without affecting their mating condition so that each group of round protrusions at the upper side of the pump head body completely insert into each group of corresponding round dents at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the round dents to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained. 
     
     
         43 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 25 , wherein a group of square dents are circum-disposed around each said operating hole in the pump head body while a group of square protrusions are circum-disposed around each said annular positioning protrusion in the diaphragm membrane in corresponding position with each mating group of square dents in the pump head body. 
     
     
         44 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 43 , wherein each group of square dents in the pump head body are adapted into a group of square holes. 
     
     
         45 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 43 , wherein each group of square dents in the pump head body and each corresponding group of square protrusions in the diaphragm membrane are exchanged into a group of square protrusions in the pump head body and a group of corresponding square dents in the diaphragm membrane without affecting their mating condition so that each group of square protrusions at the upper side of the pump head body completely insert into each group of corresponding square dents at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the square dents to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained. 
     
     
         46 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 25 , wherein an integral dented ring is circum-disposed around the upper side of each operating hole and a linking five-curved dent is disposed to encompass all five integral dented rings in the pump head body while an integral protruded ring is circum-disposed around each concentric annular positioning protrusion and a linking five-curved protrusion is disposed to encompass all five integral protruded rings at the bottom side of the diaphragm membrane in corresponding position with the mating linking five-curved dent and five integral dented rings in the pump head body. 
     
     
         47 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 46 , wherein said linking five-curved dent and five integral dented rings in the pump head body are adapted into a linking five-curved slit and five integral perforated rings. 
     
     
         48 . The vibration-reducing structure for five-compressing-chamber diaphragm pump as claimed in  claim 46 , wherein said linking five-curved dent and five integral dented rings in the pump head body and the corresponding linking five-curved protrusion and five integral protruded rings in the diaphragm membrane are exchanged into a linking five-curved protrusion and five integral protruded rings in the pump head body and a corresponding linking five-curved dent and five integral dented rings in the diaphragm membrane without affecting their mating condition so that the linking five-curved protrusion and five integral protruded rings at the upper side of the pump head body completely insert into the corresponding linking five-curved dent and five integral dented rings at the bottom side of the diaphragm membrane upon assembly of the pump head body and the diaphragm membrane, as well as a short length of moment arm from the integral dented ring to the peripheral of the annular positioning protrusion in the diaphragm membrane is also obtained.