JPH0450973Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a clamp for straightening a vehicle frame used in a vehicle frame straightening device for straightening a vehicle frame that has been deformed due to an accident or the like.

(Prior art) When straightening a car frame of a car that has been deformed due to an accident, etc., first, while holding the car frame with a car frame holding device of a car frame straightening device, a plurality of clamps are held on the deformed car frame portion, and the clamps are The vehicle frame can be straightened by towing it in any number of directions.

Conventionally, as the above-mentioned clamp,
The one described in Publication No. 165310 is known.

The clamp has two clamping pieces facing each other, and each clamping piece is tightened with a bolt. Then, sandwich the iron plate of the pinch welded part of the automobile frame between the clamping parts of the clamp, tighten each clamping piece with bolts, and connect the connecting ring installed between the tapers of each clamping piece in the longitudinal direction of the clamping piece. The clamp is pulled rearward and firmly clamped, and the clamp is pulled rearward in the longitudinal direction to correct the deformed vehicle frame.

(Problem to be solved by the invention) However, in the case of the conventional clamp, in order to firmly clamp the vehicle frame, the clamping pieces must be tightened with bolts, and then the connecting ring between the tapers of each clamping piece must be clamped. The bolts that tighten the clamping pieces cannot be firmly clamped unless they are pulled backwards in the longitudinal direction of the clamping pieces, and the clamps easily come off if the clamps are pulled in any direction other than the longitudinal rearward direction of the clamping pieces. There were problems such as having to pull the clamp in a direction other than the rear after tightening it strongly using a tool such as a spanner, and the time it took to tighten the bolt.

The present invention was developed in view of the conventional situation, and its purpose is to enable clamping work in a short time without requiring tools such as spanners when attaching and detaching the clamp, and to To provide a new clamp that can easily correct a deformed vehicle frame that requires pulling correction in any number of directions since it can be pulled in any number of directions.

(Means for Solving the Problems) The clamp of the present invention includes a pair of clamping pieces arranged opposite to each other, each having a clamping part for clamping an object at one end and a cam receiving part at the other end; A bolt for tightening each clamping piece is installed so as to pass vertically through the pair of clamping pieces, and a bolt is installed between each cam receiving part of the pair of clamping pieces and rotates to tighten the pair of clamping pieces. a cam which firmly clamps the clamped object clamped at the ends of the opposing clamping parts while the pieces are in seesaw motion at the bolt parts; It has a towing cable connection means as a towing tool that can be towed by the vehicle.

(Function) According to the above-mentioned clamp of the present invention, the bolt that tightens each of the pair of clamping pieces is used as a fulcrum for opening and closing each clamping part, and by rotating the cam, the gap between each cam receiving part is opened, and the bolt position Each clamping piece causes a see-saw movement using the fulcrum as a fulcrum.

Therefore, under the above-mentioned see-saw movement state, each clamping part firmly clamps the sandwiched object, and connects a tow rope such as a chain to the tow rope connecting means, so that it can be moved not only in the rear direction of the clamp but also in the lateral direction of the clamp. It is possible to correct deformed vehicle frames by towing in any direction, such as horizontal direction, vertical direction, or horizontal and vertical inclination directions of the clamp.When towing the clamp in any direction, simply tighten the tightening bolts of each clamping piece by finger. It is possible to realize a clamp that can be used without the need for bolt tightening tools such as spanners.

Therefore, according to the clamp of the present invention, as described above, an object to be clamped (such as an automobile frame) is clamped between the clamping parts at the tips of the pair of clamping pieces, and the tightening bolt in the center of the clamping pieces is lightly tightened with fingers. By rotating the cam between each clamping piece at the rear of the bolt to widen the gap, each clamping piece makes a see-saw movement on the bolt part, and each clamping part firmly clamps the object, making it easy to use tools such as spanners. Since the clamp can be towed in any direction such as rearward, horizontally, vertically, or even vertically and horizontally inclining directions without the need for it, straightening deformed vehicle frames that require pulling straightening in all directions can be done quickly and easily. can.

(Example) Hereinafter, an example of this invention will be described with reference to the accompanying drawings.

FIG. 1 shows how a plurality of clamps of each embodiment of the present invention are used.

Clamps A, B, and C of the present invention are held between the deformed portion of the deformed vehicle frame 200 held by the vehicle frame holding device 12 of the vehicle frame straightening device 11, and the clamps A, B, and C are
For example, a chain 300 or the like is connected as the tow rope 7 to the tow rope connecting means 8, 32, and 10. The other end of the chain 300 is connected to the straightening device 13 of the vehicle frame straightening device 11. By pulling the chain 300 with the straightening device 13, each of the clamps A, B, and C can be pulled in any direction including the rearward direction in the longitudinal direction, the lateral direction, the longitudinal direction, and the longitudinal and lateral inclined directions. Therefore, the deformed vehicle frame 200 that requires traction correction in various directions can be easily corrected.

FIG. 2 shows a clamp A according to an embodiment of this invention, in which a clamping part 14 is provided at the tip, a cam receiving part 15 is provided at the rear, and a hole 16 is provided between the clamping part 14 and the cam receiving part 15. The provided clamping piece 17 and a clamping piece 21 having a clamping part 18 at the tip, a cam receiving part 19 at the rear, and a screw hole 20 between the clamping part 18 and the cam receiving part 19 are connected to a coil spring 22. The bolts 23 are passed through the holes 16 and screwed into the screw holes 20, and the pair of clamping pieces 17 are inserted between the respective cam receivers 15 and 19 by rotation. , 21 are in seesaw motion at the bolt 23, and the clamp is equipped with a cam 9 that firmly clamps the object clamped at the tips of the opposing clamping parts 14 and 18.

The cam 9 has a towing cable connecting means 8 which is formed integrally with the cam 9 and is a towing tool that can be towed outside the respective cam receivers 15 and 19.
A suitable towing cable is connected to this towing cable connecting means 8 and the clamp A is pulled rearward in the longitudinal direction.

3 and 4 show a clamp B according to another embodiment of this invention, FIG. 3 being a partially sectional plan view of the clamp B, and FIG. 4 being a side view of the same clamp B.

The clamp B of this embodiment has a clamping portion 24 at the tip.
A cam receiving part 25 is provided at the rear while holding part 2.
4 and the cam receiving part 25, a holding piece 27 has a holding part 28 at the tip and a cam receiving part 29 at the rear, and a screw is inserted between the holding part 28 and the cam receiving part 29. The clamping part 31 provided with the hole 30 is opposed to the lateral towing cable connecting means 32 for connecting the towing cable, and the bolt 33 is passed through the hole 26 and screwed into the threaded hole 30. Cam receiving part 2
5 and 29, the pair of clamping pieces 27 and 31 are placed in a see-saw motion state at the bolt 33 by rotating, and each of the opposing clamping parts 24,
This clamp is equipped with a cam 9 that firmly clamps the object to be clamped at the tip of the clamp.

The cam 9 is provided with a towing cable connecting means 34 which is formed integrally with the cam 9 and is a towing tool that can be towed outside the respective cam receivers 25 and 29. The cable is connected to the clamp B to be pulled backward in the longitudinal direction, or the tow cable is connected to the lateral traction cable connection means 32 of the clamp B to be pulled in a sideways or lateral inclined direction. It is.

According to this clamp B, as shown in FIG. 1, even if the cam 9 is clamped in a position where it cannot be pulled in the longitudinal direction of the clamp B, it can be firmly clamped by the action of the cam 9, so that the clamp B will not come off. Nothing happens.

5 and 6 show a clamp C according to another embodiment of the present invention, FIG. 5 is a partial cross-sectional side view of the clamp C, and FIG. 6 is a clamping portion of the embodiment shown in FIG. 5. FIG. 2 is a side view of an embodiment in which 1 is replaced.

The clamp C shown in FIG. 5 has a replaceable clamping part 1 which is freely fixed to a screw hole 35 at the tip with a bolt 36, and a cam receiving part 2 is provided at the rear part, and the clamping part 1 and the cam receiving part are provided at the rear part. A clamping piece 3 with a hole 4 between it and a replaceable clamping part 1 is freely fixed to a screw hole 35 at the tip with a bolt 36, and a cam receiving part 38 is provided at the rear part. A clamping piece 40 having a hole 39 between the part 1 and the cam receiving part 38 is made to face each other, the bolt 5 is passed through the holes 4 and 39, and nuts 6 are attached to both ends of the cam receiving part 2. , 38, by rotating the pair of clamping pieces 3, 40 at the bolt 5, the object to be clamped by the clamping part 1 is firmly clamped. This is a clamp equipped with a cam 9.

The cam 9 is provided with a towing cable connecting means 8 as a towing tool which is integrally formed with the cam 9 and can be towed outside the respective cam receivers 2 and 38. The clamp C is pulled in the rear direction in the longitudinal direction by connecting the tow rope. In addition, a towing cable can be connected to any hole 10 of the plurality of holes 10 as towing cable connecting means provided in the clamping pieces 3, 40, and the towing cable can be pulled rearward in the longitudinal direction of the clamp C, or can be pulled vertically. It can also be towed in both the vertical and vertical directions.

Since the towing cable connected to the hole 10 will pull the clamp C backward, it is of course possible to tow the clamp C backward even if the cam 9 does not have the towing cable connecting means 8, as shown in FIG. As described above, even if the cam 9 is clamped in a position where the clamp C cannot be pulled in the longitudinal direction, the clamp C will not come off due to the strong clamping action of the cam 9.

The clamp C shown in FIG. 6 is manufactured by removing the clamping part 1 bolted to the screw hole 35 at the tip of the clamp C according to the embodiment shown in FIG. The other configuration is the same as the clamp C shown in FIG. 5.

(Effects of the invention) As detailed above, according to the invention, a pair of clamping pieces provided with a clamping part and a cam receiving part are lightly fastened between both ends with a bolt fulcrum, and the clamping piece is mounted between the cam receiving parts. By rotating the cam and widening the interval between the cam receiving parts, the object to be held between the holding parts can be firmly held.

In addition, an appropriate tow rope can be connected to the tow rope connecting means integrally formed on the cam, or to the tow rope connecting means provided on the fulcrum bolt, or to the tow rope connecting means that can be provided on the clamping piece, and the tow rope can be connected in any direction. Therefore, it is possible to extremely easily correct a deformed vehicle frame that requires traction correction in any number of directions.

The clamp according to this invention can be used even when the clamp is held in a vehicle frame position where the towing cable connecting means provided on the cam cannot be pulled rearward in the longitudinal direction of the clamp, after lightly tightening the fulcrum bolt with your finger. It can be securely clamped to the deformed vehicle frame by simply rotating, and no tools such as spanners are required to securely tighten the fulcrum bolt.

Additionally, in the past, especially large and heavy clamps required two people to attach the clamp to the vehicle frame because it was impossible for one person to support the clamp while tightening bolts with a spanner. As described above, the clamp can be attached to the vehicle frame by one person, and the clamp can be attached and detached by simply rotating the cam, no tools such as spanners are required, and the clamping operation can be completed in an extremely short time.

Since the manufacturing cost of the cam itself is low, this invention can provide a clamp with high added value at the same price as conventional clamps, and as mentioned above, it has many and various effects as a whole. It has the following.

[Brief explanation of drawings]

FIG. 1 shows a plurality of clamps according to the embodiments shown in FIGS. 2 to 6 of the present invention being held between a deformed part of a deformed car frame held by a car frame holding device of a car frame straightening device, and each clamp is A side view showing a straightening operation in which the car frame is straightened while being chained to the straightening device of the car frame straightening device and being pulled in any number of directions. FIG. 2 is a partial cross-sectional state of the clamp according to the embodiment of the present invention. 3 is a partially sectional plan view of a clamp according to an embodiment different from that shown in FIG. 2, FIG. 4 is a side view of the clamp shown in FIG. 3, and FIG. 5 is a side view of the clamp shown in FIG. FIG. 6 is a side view in a partially sectional state of a clamp according to an embodiment different from that shown in FIG. 3; FIG. 6 is a side view of the clamp of the embodiment shown in FIG. Codes in the figure, codes in Figure 1, A, B, C...
Clamp, 11... Vehicle frame straightening device, 12... Vehicle frame holding device, 200... Vehicle frame, 8, 10, 32...
Tow rope connection means, 7... Tow rope, 300... Chain,
13... Orthodontic device. Symbols in Fig. 2, A... Clamp, 16...
Hole, 14, 18... Holding part, 15, 19... Cam receiving part, 17, 21... Holding piece, 20... Screw hole,
22...Coil spring, 23...Chiyo bolt, 9...Cam, 8...Tow rope connection means. Symbols in Figures 3 and 4, B...Clamp, 2
6... Hole, 24, 28... Holding part, 25, 29...
...Cam receiving portion, 27, 31... Holding piece, 30... Screw hole, 32, 34... Traction cable connecting means, 33...
Chiyo Boruto, 9...cam. Symbols in Figures 5 and 6, C... Clamp, 1
... Clipping part, 3, 40 ... Clipping piece, 9 ... Cam,
35...screw hole, 36...bolt, 2,38...
Cam receiving part, 4, 39...hole, 5...bolt, 6...
... Nut, 8 ... Traction cable connection means, 10 ... Hole,
41...Angle-shaped clamping part.

Claims (1)

[Scope of utility model registration request] A pair of clamping pieces each having a clamping part for clamping an object at one end and a cam receiving part at the other end and arranged opposite each other, each of which is attached so as to pass vertically through the pair of clamping pieces. A bolt for tightening the clamping pieces is installed between each of the cam receiving parts of the pair of clamping pieces, and when rotated, the pair of clamping pieces are set in a see-saw motion state at the bolt part, and each of the opposing clamping pieces The cam has a cam configured to firmly clamp an object to be clamped at the tip of the part, and a towing cable connecting means as a towing tool that is formed integrally with the cam and can be towed outside the cam receiving part. A clamp that does.