JPS6246005Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a clamp used for repairing automobile bodies deformed due to collisions and various other sheet metal work.

[Prior art and its problems] A conventionally known clamp has a pair of clamping members rotatably attached at an intermediate position, and the distal end is opened or narrowed by opening or narrowing the proximal ends of both clamping members. In this type of clamp, a pair of clamping members are rotated around a fulcrum, so when repairing an automobile body, for example, it can be used to hold sheet metal at the rim of the body. Although it is suitable for clamping thin-walled parts, when it comes to relatively thick-walled parts such as chassis and bumpers, the clamping surface hits diagonally and there is a problem that it cannot be clamped securely.

Further, when the bumper is dented due to a collision and there is no gap between the bumper and the body, it becomes necessary to separate the bumper from the body in order to restore the original shape. However, the gap between the bumper and the body is extremely tight, and it is not possible to use a pair of clamping members for the sole purpose of clamping into the gap to widen it, as in the past, so such repairs cannot be performed. It was hot.

[Purpose of the invention] Not only can the object to be clamped be firmly clamped regardless of the width of the clamp, but it can also widen and restore the gap between two objects stuck together by curving. The purpose is to provide clamps.

[Means for achieving the purpose] Consisting of a pair of clamping members and a screw shaft, one clamping member is rotatably attached to one end of the screw shaft via a bearing, and the other clamping member is rotatably attached to one end of the screw shaft. The pair of clamping members are screwed onto a screw shaft, and each of the pair of clamping members has an integral annular anchoring portion, and the end edge of the anchoring portion is formed to be thin.

[Operation] By turning the screw shaft, the clamping member moves while maintaining a parallel state with respect to the opposing clamping member.

Insert the two clamping members into the gap between two objects that have been pasted together due to curvature, etc., with their thin parts aligned, and by turning the screw shaft, both clamping members will be parallel to each other on both sides. direction and spread out the object to be clamped.

[Example] 1 and 2 are a pair of clamping members having a symmetrical appearance, with clamping pieces 3 and 3 fixedly fixed to the tips thereof by screws 4, and 5 is a buttress screw extending over substantially the entire length of the outer periphery. It is a screw shaft with grooves carved into it. Thus, one clamping member 1 is rotatably attached to one end of the threaded shaft 5 via thrust bearings 6, 6, and a bolt 7 is screwed to the outer end of the threaded shaft 5, thereby attaching a retaining ring 8 and a washer 9. Tighten the bearings 6, 6 through
The clamping member 1 is prevented from falling off the screw shaft 5. The other clamping member 2 has a screw hole 10 with a buttress screw groove that matches the screw shaft 5, and the screw shaft 5 is screwed into the screw hole, and a hexagonal nut 11 is attached to the outer end of the screw shaft 5. It is installed. Both clamping members 1 and 2 each have integrally annular mooring portions 12 and 12 on the base end side opposite to the clamping pieces 3 and 3 with the screw shaft 5 in between, and the mooring portions 12
The edges of are formed into thin walls 13, 13.

However, in the clamp configured in this way, an object to be clamped is inserted between the clamping pieces 3 and 3 of both clamping members 1 and 2, and one clamping member 2 is attached to the screw shaft 5 by turning the screw shaft 5. 2 in the direction of the arrow in FIG. 2, narrowing the gap between the clamping members 1 and 2, and clamping and fixing the object between the clamping members 1 and 2. The rotation of the screw shaft 5 is preferably performed by fitting, for example, an impact wrench (not shown) into the hexagonal nut 11 and operating the impact wrench. Fig. 3 shows an example of repairing an automobile body, in which clamps A of the present invention are attached to the outer periphery of a round pipe B, which is slightly longer than the width of the vehicle, near both ends, respectively, and the mooring portions 12, 12 of the round pipe 13 are Attach by passing the round pipe B
It is possible to support the two ends of the clamps by jacks C, and then use the clamping members 1 and 2 of each clamp A to grip a chassis, for example. For example, although not shown in the drawings, when the bumper is dented due to a collision and there is no gap with the body and the bumper cannot be clamped from above, the thin parts 13 can be clamped by holding the gap between the clamping members 1 and 2. , 13, then insert both thin-walled parts between the bumper and the body, and then tighten the screw shaft 5.
It is also possible to use the bumper in an application where the bumper is separated from the body by widening the gap between the two clamping members 1 and 2 by turning the bumper.

[Effect of the invention] By turning the screw shaft, the pair of clamping members move toward and away from each other while maintaining a parallel state, so it is possible to securely clamp the object to be clamped, regardless of the width of the grip. can. In addition, since the clamping member has a mooring part and the edge of the mooring part is formed thin, the gap between two pieces of objects stuck together can be widened and restored by curving. It can significantly contribute to improving work efficiency.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view, Fig. 2 is a partial sectional view, and Fig. 3 is a diagram showing one state of use. 1, 2... Clamping member, 5... Screw shaft, 6, 6...
...Bearing, 12,12...Mooring part, 13,1
3... Thin wall part, A... Clamp.

Claims (1)

[Scope of utility model registration request] Consisting of a pair of clamping members and a screw shaft, one clamping member is rotatably attached to one end of the screw shaft via a bearing, and the other clamping member is screwed into the screw shaft. A clamp characterized in that each of the pair of clamping members has an integral annular anchoring portion, and the edge of the anchoring portion is formed thin.