Pump fixing structure and pump

Abstract

A pump fixing structure may include a pump including a pump part, motor part, and a fixing base. The pump part may include an outlet port, inlet port and an impeller. The motor part may rotate the impeller and may include a stator which includes a drive coil and a stator core; and a motor case integrally molded with the stator, the motor case structuring an outer peripheral face of the motor part. The outer peripheral face is formed in a substantially circular truncated cone face shape having a draft angle for drawing the motor case from a die. The pump part may include a fixed part fixed to the fixing base. The fixing base may include a bent metal plate and is provided with a motor support part disposed on a lower side. A buffer member may be disposed between the motor part and the motor support part.

1 . A pump fixing structure comprising:
 a pump comprising a pump part and a motor part; and   a fixing base to which the pump is fixed;   wherein the pump part comprises an outlet port and an inlet port for fluid and an impeller disposed in an inside of the pump part;   wherein the motor part is structured to rotate the impeller and comprises:
 a stator which comprises a drive coil and a stator core around which the drive coil is wound; and 
 a motor case which is formed of resin and is integrally molded with the stator, the motor case structuring an outer peripheral face of the motor part; 
   wherein the outer peripheral face of the motor part is formed in a substantially circular truncated cone face shape having a draft angle for drawing the motor case from a die which is used when the stator and the motor case are integrally molded;   wherein the pump part comprises a fixed part which is fixed to the fixing base;   wherein the fixing base comprises a bent metal plate and is provided with a motor support part disposed on a lower side with respect to the motor part; and   wherein a buffer member having elasticity is disposed between the motor part and the motor support part.   
     
     
         2 . The pump fixing structure according to  claim 1 , wherein
 the fixing base is formed in a substantially angular groove shape which is provided with the motor support part formed in a substantially rectangular shape and side face parts which are bent in a lower direction from each of a pair of opposite sides of the motor support part formed in the substantially rectangular shape,   the fixed part is fixed to one of two side face parts,   a space is formed between the motor part and the motor support part, and   the motor part and the motor support part arc contacted with contact the buffer member.   
     
     
         3 . The pump fixing structure according to  claim 2 , wherein a second buffer member having elasticity is disposed between the side face part and the fixed part. 
     
     
         4 . The pump fixing structure according to  claim 3 , wherein
 the motor support part is formed with an engaging hole with which a part of the buffer member is engaged, and   the buffer member is formed with an engaging projection which is engaged with the engaging hole.   
     
     
         5 . A pump comprising:
 a pump part comprising an outlet port and an inlet port for fluid and an impeller disposed in an inside of the pump part; and   a motor part structured to rotate the impeller;   wherein the pump is fixed to a fixing base, which is formed by bending a metal plate and is provided with a motor support part disposed on a lower side with respect to the motor part, through a buffer member having elasticity disposed between the motor part and the motor support part;   wherein the motor part comprises:
 a stator which comprises a drive coil and a stator core around which the drive coil is wound; and 
 a motor case which is formed of resin and is integrally molded with the stator, the motor case structuring an outer peripheral face of the motor part; 
   wherein the outer peripheral face of the motor part is formed in a substantially circular truncated cone face shape having a draft angle for drawing the motor case from a die which is used when the stator and the motor case are integrally molded;   wherein the pump part comprises a fixed part which is fixed to the fixing base; wherein   the motor part comprises a connector for supplying structured to supply an electric current to the drive coil,   the connector is integrated with the motor case so as to protrude from an outer peripheral face of the motor case when the stator and the motor case are integrally molded, and   when viewed in an axial direction of the motor part, a gate mark which is a mark of a gate of the die is formed on the motor case on an opposite side to the connector so as to interpose an axial center of the motor part therebetween.   
     
     
         6 . The pump according to  claim 5 , wherein the motor case is formed with a gate mark formed part where the gate mark is formed on its surface so as to protrude to an outer side in a radial direction of the motor part. 
     
     
         7 . A pump comprising:
 a pump part comprising an outlet port and an inlet port for fluid and an impeller which is disposed in an inside of the pump part; and   a motor part structured to rotate the impeller;   wherein the pump is fixed to a fixing base, which is formed by bending a metal plate and is provided with a motor support part disposed on a lower side with respect to the motor part, through a buffer member having elasticity disposed between the motor part and the motor support part;   wherein the motor part comprises:
 a stator which comprises a drive coil and a stator core around which the drive coil is wound; and 
   a motor case which is formed of resin and is integrally molded with the stator, the motor case structuring an outer peripheral face of the motor part;   wherein the outer peripheral face of the motor part is formed in a substantially circular truncated cone face shape having a draft angle for drawing the motor case from a die which is used when the stator and the motor case are integrally molded; wherein the pump part comprises a fixed part which is fixed to the fixing base; and
 wherein the motor case is formed of BMC (Bulk Molding Compound). 
   
     
     
         8 . A pump comprising:
 a pump part comprising an outlet port and an inlet port for fluid and comprising an impeller which is disposed in an inside of the pump part; and   a motor part structured to rotate the impeller;   wherein the pump is fixed to a fixing base, which is formed in a substantially angular groove shape provided with a motor support part formed in a substantially rectangular shape and disposed on a lower side relative to the motor part, and side face parts which are bent in a lower direction from each of a pair of opposite sides of the motor support part formed in the substantially rectangular shape, through a buffer member having elasticity disposed between the motor part and the motor support part;   wherein the motor part comprises:
 a stator which comprises a drive coil and a stator core around which the drive coil is wound; and 
 a motor case which is formed of resin and is integrally molded with the stator, the motor case structuring an outer peripheral face of the motor part; 
   wherein the outer peripheral face of the motor part is formed in a substantially circular truncated cone face shape having a draft angle for drawing the motor case from a die which is used when the stator and the motor case are integrally molded;   wherein the pump part comprises a fixed part which is fixed to the fixing base;   wherein the fixed part is fixed to one of the side face parts of the fixing base, wherein a space is formed between the motor part and the motor support part;   wherein the motor part and the motor support part contact the buffer member;   wherein a second buffer member having elasticity is disposed between the side face part and the fixed part; wherein the motor part comprises a rotor which is disposed on an inner peripheral side with respect to the stator,   the stator core comprises an outer peripheral core part in a substantially cylindrical shape which is disposed on an outer peripheral side with respect to the drive coil, and   at least a part of a gate mark which is a mark of a gate of the die and at least a part of the outer peripheral core part are overlapped with each other in a radial direction of the motor part.   
     
     
         9 . The pump fixing structure according to  claim 1 , wherein
 the pump part comprises a pump case which is formed with the outlet port and the inlet port,   the pump case is formed with a flange part for fixing the motor case,   the flange part protrudes to an outer side in a radial direction relative to an outer peripheral face of the motor case, and   a side face on a motor case side of the flange part which is protruded to the outer side is the fixed part which is fixed to the fixing base.   
     
     
         10 . The pump fixing structure according to  claim 9 , wherein
 the fixing base is formed in a shape which is provided with the motor support part to support the outer peripheral face of the motor case and side face parts which are bent from both sides of the motor support part,   one of the side face parts of the fixing base is fixed to the flange part,   a space is formed between the outer peripheral face of the motor case and the motor support part, and   the outer peripheral face and the motor support part contact the buffer member.   
     
     
         11 . The pump fixing structure according to  claim 10 , wherein a second buffer member having elasticity is disposed between the side face part and the flange part. 
     
     
         12 . The pump fixing structure according to  claim 10 , wherein
 a flange part of a partition member which defines a pump chamber together with the pump case is abutted with the flange part of the pump case and thereby the pump chamber is formed by an inside of the pump case and an inside of the partition member,   a rotor which faces the stator through the partition member is rotationally supported on an inner side with respect to the partition member,   the motor case is integrally molded with the stator and the partition member formed in a bottomed cylindrical shape, and   a plurality of protruded parts for screws to fix the motor part to the flange part of the pump case is formed on the outer peripheral face of the motor case.   
     
     
         13 . The pump fixing structure according to  claim 10 , wherein
 the motor part comprises a connector structured to supply an electric current to the drive coil;   the connector is integrated with the motor case so as to protrude from an outer peripheral face of the motor case when the stator and the motor case are integrally molded; and   when viewed in an axial direction of the motor part, a gate mark which is a mark of a gate of the die is formed on the motor case on an opposite side to the connector so as to interpose an axial center of the motor part therebetween.   
     
     
         14 . The pump fixing structure according to  claim 13 , wherein the motor case is formed with a gate mark formed part where the gate mark is formed on its surface so as to protrude to an outer side in a radial direction of the motor part. 
     
     
         15 . The pump fixing structure according to  claim 10 , wherein the motor case is formed of BMC (Bulk Molding Compound). 
     
     
         16 . The pump fixing structure according to  claim 10 , wherein the motor part comprises a rotor disposed on an inner peripheral side with respect to the stator;
 the stator core is provided with an outer peripheral core part in a substantially cylindrical shape which is disposed on an outer peripheral side with respect to the drive coil; and   at least a part of a gate mark which is a mark of a gate of the die and at least a part of the outer peripheral core part are overlapped with each other in a radial direction of the motor part.