JPS643727Y2 - - Google Patents

Description

[Detailed explanation of the idea]

TECHNICAL FIELD The present invention relates to a vehicle towing aid used when towing and restoring a damaged part of an accident vehicle. BACKGROUND OF THE INVENTION In recent years, with the increasing number of traffic accidents, the number of repairs for damaged vehicles has also increased significantly. When repairing such an accident car, the damaged part is first pulled out or pushed in to restore the damaged part to its original shape (in most cases, the damaged part is stuck in). After that, we will replace the damaged parts and paint the sheet metal. Therefore, it is important that the restoration work be carried out in exactly the opposite direction using the same amount of force as was applied at the time of the accident. Conventionally, when pulling out a damaged part of an accident car, a clamp member, hook, or suction cup (a rubber suction device that uses atmospheric pressure to attract objects to flat surfaces) is attached to the end of the chain to pull out the damaged part. The common method was to lead to one point. However, since the damaged part generally undergoes complex deformation, there is a possibility that the entire damaged part cannot be pulled out successfully by the method of pulling only one point of the damaged part. Therefore, a method of towing the damaged parts at multiple points has been considered, but in that case, multiple chains must be towed separately, which is a cumbersome task. Further, as shown in FIG. 1, a chain 12A and a chain 12 are attached to the approximately T-shaped traction aid 11.
There is also a method of attaching the clamp member, hook, etc. to the tip of the chain 12A and towing two damaged parts of the accident vehicle, but in this case, a large load ( The traction aid 11 needs to be made sturdy because the amount of force (about the same as the input at the time of an accident) is applied. Therefore, the traction aid 11 is inevitably heavy and has the disadvantage that its handling is inconvenient. Purpose The purpose of the present invention is to attach a pair of traction members to a connecting bar so that they face each other, so that the ends of both traction members on the towed object (i.e. vehicle) side move toward the towed object. By bending them so as to separate them from each other, and by providing at least one hook part on each end of each towing member for hooking a rope such as a chain or wire, it is possible to prevent damage caused by sinking objects or protruding parts of the towed object. To provide a convenient vehicle towing aid capable of stably towing and restoring a damaged part, and capable of towing an object to be towed from almost all directions. Embodiment Examples 2 to 4 below are examples embodying the present invention.
To explain based on the figure, 1 is a fixedly held automobile, and its damaged part (in this example, it is assumed that the front part of the automobile 1 is dented due to a head-on collision). Chain 2A,
2B and the vehicle towing aid 3 of the present invention. The vehicle traction aid 3 is comprised of a connecting bar 4 and a pair of opposing traction members 5 attached to the bar 4. The connecting bar 4 is formed of a cylindrical member, and has a plurality of through holes 4a penetrated therethrough at approximately constant intervals. The pair of traction members 5 pass through the connecting bar 4 inserted into the hollow through-hole 6 provided in the center from above the through-hole 6 and into the through-hole 4a of the bar 4. A bolt-shaped pin 7 that is inserted and protrudes downward from the penetration part 6 again.
and a nut 8 screwed onto the pin 7 so as to be rotatable. Both traction members 5 are bent so as to be spaced apart from each other as they move toward the vehicle 1 from the attachment portion with the connecting bar 4 (i.e., the hollow penetrating portion 6), and are bent at the end on the vehicle 1 side. There are three fork-shaped hooks 5a, 5b, 5c on which the chain 2A is hooked, and one fork-shaped hook 5d on which the chain 2B is hooked at the end on the towing side. The pin 7 is located approximately in the center between the hook portions 5a and 5d, and the line connecting the hook portion 5a and the pin 7 is approximately relative to the line connecting the hook portion 5d and the pin 7.
They intersect at 30 degrees. Next, as shown in FIG. 2, both traction members 5 are attached to the connecting bar 4 by inserting the pins 7 into the through holes 4a located at the ends of the connecting bar 4, and the hook portions 5a The operation will be described in the case where the chain 2A is hooked to the hook portion 5d and the fork-shaped chain 2B is hooked to the hook portion 5d at an angle of approximately 60 degrees. Now, when the chain 2B is pulled in the direction of arrow P in Figure 2 with a force F that is approximately the same as the input at the time of the accident, a force is applied to both hooks 5d in the direction of arrow Q in the figure.

Created by [formula] use this power

[Formula] is in the direction of arrow R in the figure. Force F/2 and also force in the direction of arrow S

It can be decomposed into [Formula]. Therefore, a force F/2 in the direction of arrow T in the figure acts on the hook portion 5a. The distance from the hook 5a to the pin 7 in the pulling direction (that is, the direction of arrow P) is h, and from the pin 7 to the hook 5d.
If we calculate the balance of the moment of force around the pin 7 by assuming that the distance from the hook is h and the distance from the hook 5a to the pin 7 in the direction of the arrow S is x, Therefore, In other words, the line connecting the hook 5a and the pin 7 intersects the line in the traction direction (direction of arrow P) at approximately 30 degrees;
The intersecting angle between the line connecting the pin 7 and the pin 7 is equal to 30° with respect to the line connecting the pin 7 and the hook portion 5d. Therefore, the second
Even if the chain 2B is pulled in the direction of arrow P in the state shown in the figure, the traction member 5 does not rotate around the pin 7, and the load in the axial direction of the connecting bar 4 is canceled out through the bar 4. Therefore, the damaged part of car 1 is in the pulling direction of chain 2B (direction of arrow P)
It is stably towed to its original shape and restored to its original shape. Incidentally, in this embodiment, the distance from the hook 5a to the pin 7 in the traction direction (direction of arrow P) is equal to the distance h from the pin 7 to the hook 5d.

If [Formula] is set, the moments of force centered on the pin 7 are balanced and the traction member does not rotate, so the distance from the hook 5a to the pin 7 in the traction direction can be set almost arbitrarily. . Next, if the damaged part of the automobile 1 is small, as shown in FIG. 4, both the traction members 5 are brought close to each other and the chain 2A is hooked on the hook part 5b, for example. The distance y from the hook 5b to the pin 7 in the axial direction of the connecting bar 4 is

If [Formula] is used, the angle formed by the bifurcated chain 2B may be set to approximately 30°. Furthermore, as shown in FIGS. 5 and 6, the vehicle towing aid 3 can be used to tow the vehicle 1 from any direction depending on the location of the damage and the direction in which the vehicle 1 is dented or ejected. As described above, in this embodiment, a pair of traction members 5 are attached to the connecting bar 4 by pins 7 so as to face each other, and both traction members 5 are connected to the automobile as a towed object from the pin 7. The traction members 5 are bent so as to be separated from each other as they move toward each other, and hooks for hooking ropes such as chains and wires are provided at both ends of each traction member 5. By simply pulling, the two damaged parts of the car 1 are stably pulled in the pulling direction of the chain 2B, and therefore the damaged parts of the car 1 are stably pulled and restored to their original shape. Furthermore, in this embodiment, the chain 2A is hooked on the hook portions 5a, 5b, 5c of the traction member 5, and the automobile 1 is towed via the chain 2A. By attaching a clamp member, a hook, a suction cup, etc., the damaged part of the automobile 1 can be towed from any direction. Further, in this embodiment, a plurality of through holes 4a are provided in the connecting bar 4 at approximately equal intervals, and the through holes 4a
By attaching the traction member 5 to the connecting bar 4 by inserting the pin 7 into the traction member 5, the traction member 5 is attached to the connecting bar 4. The traction members 5 can be adjusted closer to each other or farther apart. Further, in the vehicle traction aid 3 of the present invention, the load in the axial direction of the connecting bar 4 is canceled out through the connecting bar 4, so the connecting bar 4 does not need to be made as strong as the traction aid 11 of the conventional structure. . Therefore, the vehicle traction aid 3 can be lightweight and convenient to handle. Furthermore, the vehicle traction aid 3 of the present invention
It can be used not only for towing a damaged part of a vehicle to restore it to its original shape, but also for towing the entire automobile 1 in all directions and fixing it. Note that the present invention is not limited to the above-mentioned embodiments. For example, only one traction member 5 or both traction members 5 may be fixed to the connecting bar 4 in a non-rotatable manner, or the traction member 5 may be bent. The conditions may be changed as appropriate, two or four or more hooks may be provided at the end of the towing member 5 on the towed object (car 1) side, or the end of the towing member 5 on the towing side (chain 2B side) to 2
It is also possible to make arbitrary changes and embodiments without departing from the spirit of the present invention, such as by providing more than one hook, or by configuring a connecting bar with a pair of connecting bar pieces that are slidable relative to each other. be. As detailed above, the present invention attaches a pair of traction members to the connecting bar so as to face each other,
The ends of both traction members on the towed object side are bent so as to be separated from each other as they move toward the towed object, and both ends of each traction member have hook portions for hooking ropes such as chains and wires. By providing at least one of each, it is possible to stably pull and restore damaged parts of the towed object that have sunk in or protruded, and it is also possible to tow the towed object from all directions. It is an excellent invention for industrial use as a vehicle traction aid because it has the effect of being easy to handle.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing a conventional vehicle traction aid, FIG. 2 is a plan view illustrating the operation of the vehicle traction aid of the present invention in one state of use, and FIG. 3 is a schematic plan view of the vehicle traction aid of the present invention. 4 is a side view, FIG. 4 is a plan view showing another usage state of the vehicle traction aid, FIG. 5 is a schematic plan view showing various usage states of the vehicle traction aid,
FIG. 6 is a schematic side view showing various states of use. Vehicle traction aid...3, Connection bar...4, Traction member...5, Hook part...5a, 5b, 5c, 5
d.

Claims (1)

[Claims for Utility Model Registration] 1. A pair of traction members are attached to the connecting bar so as to face each other, and ends of both traction members on the towed object side are separated from each other as they move toward the towed object. 1. A vehicle traction aid characterized in that each traction member is bent so as to be bent, and at least one hook portion for hooking a rope such as a chain or wire is provided at both ends of each traction member. 2. The vehicle traction aid according to claim 1, wherein both traction members are attached to the connection bar so that their attachment positions can be adjusted in stages. 3. The vehicle traction aid according to claim 2, wherein both traction members are rotatably attached to the connection bar by bolt-like pins and nuts. 4. Utility model registration claim 3, in which the connecting bar is provided with a plurality of through holes through which the pins are inserted.
Vehicle traction aids as described in section.