Bed sheet clamp

Abstract

A bed sheet clamp includes a first clamp plate and a second clamp plate. The first clamp plate and second clamp plate are hinged or joined at 90 degrees in a fixed manner. The bed sheet clamp features a simple structure. It is necessary to put the edge of a bed sheet into the head of a bed or near the wall, just insert the edge of the bed sheet into the two hinged clamp plates, coil it, and insert both the bed sheet clamp and the bed sheet into the gap near the head of the bed or the wall. For any part of the bed sheet protruding out of the mattress, use the bed sheet clamp joined at 90 degrees. The use of the bed sheet clamp not only facilitates making the bed, but also increases the force retaining the edge of the bed sheet, so that the bed sheet is tightened and the properly arranged bed sheet will not get loose easily. In this way, one can make the bed clean and tidy.

1 . A bed sheet clamp, comprising:
 a first clamp plate; and   a second clamp plate, wherein the first clamp plate and second clamp plate are hinged or joined at 90 degrees in a fixed manner.   
     
     
         2 . A bed sheet clamp, as recited in  claim 1 , further comprising a third clamp plate, wherein the first clamp plate is hinged to the top of the second clamp plate, and the third clamp plate is hinged to the bottom of the second clamp plate. 
     
     
         3 . A bed sheet clamp, as recited in  claim 2 , further comprising a hold-down plate, wherein the length of the first clamp plate is different from that of the third clamp plate, and the sum of the lengths of the first clamp plate and the third clamp plate is less than that of the second clamp plate, wherein the hold-down plate is located between the head ends of the first and third clamp plates and is mounted onto the second plate through a rotating shaft, wherein the width of said hold-down plate is less than the distance between the head ends when the first clamp plate, the third clamp plate and the second clamp plate are joined. 
     
     
         4 . A bed sheet clamp, as recited in  claim 1 , wherein the first clamp plate is hinged to the second clamp plate at the top, and the bottom of both the first and second clamp plates are bent to 90 degrees with identical bending direction; wherein when the first and second clamp plates are joined, the bending part of the second clamp plate presses on the lower part of the bending part of the first clamp plate. 
     
     
         5 . A bed sheet clamp, as recited in  claim 4 , wherein the second clamp plate includes a vertical clamp plate and a 90° bent clamp plate which is mounted at the lower end of the vertical clamp plate, wherein the upper end of said vertical clamp plate is hinged to that of the first clamp plate, and the 90° bent clamp plate includes a vertical part and a bent part, wherein the vertical part of the 90° bent clamp plate is joined to the vertical clamp plate in a movable way, wherein when the first and second clamp plates are joined, the bending part of the 90° bent clamp plate presses on the lower end of the bending part of the first clamp plate. 
     
     
         6 . A bed sheet clamp, as recited in  claim 2 , wherein at the joining part of the clamp plates, one clamp plate has a transverse nib, and the other clamp plate has a groove corresponding to the nib. 
     
     
         7 . A bed sheet clamp, as recited in  claim 3 , wherein at the joining part of the clamp plates, one clamp plate has a transverse nib, and the other clamp plate has a groove corresponding to the nib. 
     
     
         8 . A bed sheet clamp, as recited in  claim 4 , wherein at the joining part of the clamp plates, one clamp plate has a transverse nib, and the other clamp plate has a groove corresponding to the nib. 
     
     
         9 . A bed sheet clamp, as recited in  claim 4 , wherein at the joining part of the clamp plates, one clamp plate has a transverse nib, and the other clamp plate has a groove corresponding to the nib. 
     
     
         10 . A bed sheet clamp, as recited in  claim 3 , further comprising a pull ring, wherein the pull ring is joined to the protruding part of the bed sheet clamp through a soft rope. 
     
     
         11 . A bed sheet clamp, as recited in  claim 3 , further comprising a hook, wherein the hook is able to be fixed onto near the side of a clamp plate through a pin in a rotational manner, and when said clamp plate is joined to the other clamp plate, the hooking part of the hook fastens the two clamp plates at the location on the side of both clamp plates. 
     
     
         12 . A bed sheet clamp, as recited in  claim 4 , further comprising a hook, wherein the hook is able to be fixed onto near the side of a clamp plate through a pin in a rotational manner, and when said clamp plate is joined to the other clamp plate, the hooking part of the hook fastens the two clamp plates at the location on the side of both clamp plates. 
     
     
         13 . A bed sheet clamp, as recited in  claim 5 , further comprising a hook, wherein the hook is able to be fixed onto near the side of a clamp plate through a pin in a rotational manner, and when said clamp plate is joined to the other clamp plate, the hooking part of the hook fastens the two clamp plates at the location on the side of both clamp plates. 
     
     
         14 . A bed sheet clamp, as recited in  claim 3 , wherein the inner surface and/or outer surface of the clamp plate is mounted or embedded with friction material. 
     
     
         15 . A bed sheet clamp, as recited in  claim 4 , wherein the inner surface and/or outer surface of the clamp plate is mounted or embedded with friction material. 
     
     
         16 . A bed sheet clamp, as recited in  claim 5 , wherein the inner surface and/or outer surface of the clamp plate is mounted or embedded with friction material. 
     
     
         17 . A bed sheet clamp, as recited in  claim 2 , wherein the hinge joint is achieved by hinged connection of the head end of the clamp plate through a pin or by connection via a kind of flexible thin-wall material. 
     
     
         18 . A bed sheet clamp, as recited in  claim 3 , wherein the hinge joint is achieved by hinged connection of the head end of the clamp plate through a pin or by connection via a kind of flexible thin-wall material. 
     
     
         19 . A bed sheet clamp, as recited in  claim 4 , wherein the hinge joint is achieved by hinged connection of the head end of the clamp plate through a pin or by connection via a kind of flexible thin-wall material. 
     
     
         20 . A bed sheet clamp, as recited in  claim 5 , wherein the hinge joint is achieved by hinged connection of the head end of the clamp plate through a pin or by connection via a kind of flexible thin-wall material.