JPH0318247Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention is applicable to ropes or wires (hereinafter collectively referred to as wires) hung on a tow hook.
The present invention relates to a towing hook device equipped with a rope detachment prevention device for preventing rope detachment.

[Conventional technology]

Conventionally, in a device for a towing hook of an automobile, etc., a structure for preventing the wire hooked to the towing hook from coming off has been proposed, for example, in Utility Model Application Publication No. 59-66014.
The structure of this publication is shown in Figure 3.

That is, a hook 2' curved in a substantially J-shape is provided with a fixed portion 13 to the vehicle body side base at one end side, and a hanging portion 15 having protruding pieces 14, 14 at the other end side.
is formed integrally with the shaft portion 10 of the hook 2', and the protruding pieces 14, 14 of the hook portion 15 prevent the wire hung from the shaft portion 10 from coming off. There is.

However, in the towing hook device shown in FIG. 3, since the towing hook 2' has a so-called open shape that is approximately J-shaped, although the protruding pieces 14, 14 are formed on the hook part 15, It is not possible to reliably prevent the wire hanging from the shaft portion 10 from coming off.

Further, the protruding pieces 14, 14 for preventing the wire from coming off need to be formed integrally with the shaft part 10 together with the hanging part 15 on the other end side of the towing hook 2', which makes the shape complicated. At the same time, the molding operations and the like for forming the tow hook 2' having such a complicated shape become complicated, resulting in a decrease in so-called productivity.

In order to solve this problem, there is a tow hook device equipped with a rope-off prevention device as shown in FIG. 2, for example.

That is, the towing hook device shown in FIG.
In order to prevent the wire 11 hung from the hook part 10 of the towing hook 2 from coming off, a part near the hanging free end of the hook stopper piece 7' of the hook stopper 5', which is a separate member, is attached to the hook tip 8 of the tow hook 2. The mounting base 6 of this foot stopper 5' is configured so as to be brought into contact with the
It is fixed to a bolt tightening surface 12 of the tow hook 2 with a plurality of bolts 4.

Then, the stopper piece 7' of the hook stopper 5' shown by the solid line is bent to the position shown by the chain line using the vertical bent part which is the intersecting bent part with the mounting base 6 as a fulcrum, and the hook of the tow hook 2 is bent. Part 1
After passing the wire 11 through the wire 11 as shown by the chain line, the stopper piece 7' returns to its original position as shown by the solid line due to the reaction force and comes into contact with the hook tip 8. It is designed to prevent the wire 11 hung from the hook part 10 from coming off.

[The problem that the idea attempts to solve]

However, in the case of the towing hook device shown in FIG. 2, when the wire 11 is passed through the hook portion 10 as shown by the chain line by bending the stopper piece 7' of the hook stopper 5', the hook stopper 5' is bent. It is necessary to greatly flex the stopper piece 7' as shown by the chain line to increase the amount of flexure.

That is, it is necessary to increase the angle of bending of the stopper piece 7' with the vertical bent portion of the footstopper 5' as a fulcrum.

Therefore, each time the wire 11 is connected to or removed from the hook portion 10, it is necessary to bend the stopper piece 7' largely as described above.
Its durability will be reduced.

Therefore, in order to improve the durability of the hook stopper 5', it is sufficient to prevent the stopper piece 7' of the hook stopper 5' from being greatly bent when the wire 11 is passed through.

For this purpose, for example, by increasing the vertical length of the stopper piece 7' from the vertically bent part, the bending angle of the stopper piece 7' can be adjusted without greatly bending the stopper piece 7'. It can be made relatively small.

However, since the position and shape of the hook tip 8 are predetermined, simply increasing the vertical length of the stopper piece 7' will prevent the wire 11 from being bent in order to pass through. The distance between the stopper piece 7' and the hook tip 8 remains the same as in the case where the vertical length of the stopper piece 7' is short.

Therefore, in the towing hook device shown in FIG. 2, in order to fulfill the function of reducing the amount of deflection caused by increasing the vertical length of the stopper piece 7' as described above, it is necessary to The position of the hook tip 8, which the piece 7' (the hanging free end) comes into contact with, must also be set to correspond to the hanging free end of the stopper piece 7'.

That is, by lowering the position of the hook tip 8 downward in accordance with the vertical length dimension of the stopper piece 7' which is elongated downward in this way, the mounting base 6 (the mounting base of the tow hook 2 It is necessary to increase the dimension R from the bolt tightening surface 12) in No. 3 to the inner end 100 of the hook portion 10.

On the other hand, when the stopper piece 7' is bent,
If this stopper piece 7' interferes with the nearest bolt 4, it will not be possible to obtain the predetermined amount of deflection of this stopper piece 7'. It is necessary to increase the dimension l of the bolt 4 up to the tightening position.

Therefore, increasing the dimensions R and l in this way means that the towing hook 2 equipped with the hook stopper 5' that functions to prevent the wire 11 from coming off becomes larger, which is disadvantageous in terms of cost, weight, etc. .

Therefore, the object of this invention is to reduce the amount of deflection of the stopper piece of the tow stopper and improve its durability without increasing the size of the towing hook by changing the fixing position of the hook stopper.

[Means to solve the problem]

Therefore, in this invention, the mounting base of the hook stopper is interposed and fixed between the base body and the mounting base of the tow hook, and interference with other members is avoided when the stopper piece of the hook stopper is bent. It is.

More specifically, on the hook tip 8 of the towing hook 2 which is attached to the base 1 by tightening 4 bolts,
In the towing hook device in which the stopper piece 7 of the hook stopper 5 is brought into contact with the stopper piece 7, the attachment base 7 of the hookstopper 5 is interposed between the base body 1 and the attachment base 3 of the tow hook 2, and The base body 1 is fastened together with bolts 4, and the stopper piece 7 of the hook stopper 5 is formed with a relief molded part 9 to avoid interference with the attachment base 3 of the towing hook 2 and the bolt 4.

[Effect]

According to the above-mentioned means, by interposing and fixing the mounting base 6 of the hook stopper 5 between the base body 1 and the mounting base 3 of the towing hook 2, the stopper piece of the hook stopper 5 can be fixed without increasing the size of the towing hook 2. The vertical length from the vertically bent portion of the stopper piece 7 can be increased, and the length from the vertically bent portion of the stopper piece 7 to the hook tip 8 can be relatively increased. Even if the bending angle of the stopper piece is not increased, the wire 11 can be passed through its bending action, and since the stopper piece 7 is provided with a relief molded part 9, the bending angle of the stopper piece 7 is not large. , does not interfere with the mounting base 2 and the bolt 4, and does not affect the bending movement of the stopper piece 7.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

The drawings in FIGS. 1a and 1b show an embodiment of this invention, in which a mounting base 3 of a tow hook 2 is mounted on a base 1 such as a frame, which is a vehicle body skeleton member, and its bolt tightening surface 12. It is designed to be fixed by tightening a plurality of bolts 4, 4 to.

A mounting base 6 of the hook stopper 5 is interposed between the base body 1 and the mounting base 3 of the towing hook 2, and the mounting base 6 is attached to the base body 1 together with the mounting base 3. Tighten together and fix.

In addition, the mounting base 6 of this lift stopper 5
The stopper piece 7 is bent downward substantially vertically (hereinafter, this bent part is referred to as a vertically bent part), and the part near its hanging free end is at the tip of the hook of the towing hook 2. As can be seen from FIG. 1b, the stopper piece 7 is in contact with the mounting base 3 of the tow hook 2 during the bending operation, which will be described later. 4, the irregularly shaped hole 9 is a relief molding part to avoid interference with these.
(hereinafter referred to as relief molded portion 9) is formed.

Thus, by interposing and fixing the mounting base 6 of the hook stopper 5 between the base body 1 and the mounting base 3 of the tow hook 2, the fixing position of the mounting base 6 of the said hook stopper 5 is set at a high position. Compared to the prior art towing hook device shown in FIG. The length dimension can be increased.

That is, by increasing the vertical length of the stopper piece 7, the traction hook, which is in contact with a portion near the free end of the stopper piece 7, moves from the vertically bent portion, which serves as a fulcrum when bending the stopper piece 7. The dimension up to the hook tip 8 of No. 2 can be increased.

Therefore, in the towing hook device of the present invention constructed in this manner, for example, in the case of a configuration in which the same shape, dimensions, etc. are set as the towing hook device of the prior art shown in FIG.
Even if the bending angle of the stopper piece 7 is made smaller by the length of the vertical length of the stopper piece 7, the distance between the bent stopper piece 7 and the hook tip 8 as shown by the chain line is The distance can be the same as that of the prior art configuration shown in FIG.

As a result, when the wire 11 is passed through the hook portion 10 as shown by the chain line, if the wire 11 has the same diameter as the conventional wire shown in FIG. In addition, it is possible to reduce the amount of deflection of the stopper piece 7 without having to bend it so greatly. wire 1
1 can be easily passed through.

That is, in the configuration of this invention, the hook portion 10
In order to pass the wire 11 through the wire 11, in order to obtain the same distance between the bent stopper piece 7' and the hook tip 8 in the prior art configuration shown in FIG. It is not necessary to bend the stopper piece 7 to a large extent as in the prior art configuration shown, and the bending angle of the stopper piece 7 can be sufficiently reduced.

Therefore, even if the bending operation of the stopper piece 7 is repeated each time due to repeated hooking and unhooking of the wire 11 to and from the hook portion 10, its durability does not deteriorate; The durability of the stopper piece 7) can be improved.

Moreover, such a function can be achieved by simply changing the fixing position of the mounting base 6, which is interposing and fixing the mounting base 6 of the hook stopper 5 between the base body 1 and the mounting base 3. It can have an extremely simple structure, and is therefore extremely useful in terms of cost, weight, workability, etc.

In addition, the stopper piece 7 is formed with a relief molded portion 9 to avoid interference with the mounting base 3, bolt 4, etc. during the bending operation, so that the stopper piece does not bend as described above. Even if the stopper piece 7 is bent, it does not interfere with the mounting base 3, the bolt 4, etc., and the stopper piece 7 is bent so as to overlap the bolt 4, as shown by the chain line in FIG. Even in such a case, these two members 7 and 4 will not interfere with each other.

Therefore, the bending movement of the stopper piece 7 is not affected at all, and the bending movement can be performed reliably, easily and quickly, and the workability for hooking and unhooking the wire 11 can also be improved.

Further, with such a configuration, if the wire 1
Even if the stopper piece 7 has a large diameter and it is necessary to bend the stopper piece 7 somewhat largely, the stopper piece 7 will not interfere with the mounting base 3, the bolt 4, etc. due to its relief molded part 9. do not have.

That is, in addition to being able to increase the vertical length of the stopper piece 7 mentioned above, even if the bending angle of the stopper piece 7 is increased depending on the thickness of the wire 11, this bending angle is still necessary. Since it will not become larger than this, the durability of the footstopper 5 will not be affected.

Although the vertical length of the stopper piece 7 is increased in this way, this stopper piece 7
Since there is no need to lower the position of the hook tip 8 downward according to the length of the There is no need to increase the dimension R; rather, it is possible to decrease the dimension R.

Further, as mentioned above, even when the stopper piece 7 is deflecting, a predetermined amount of deflection can be obtained without interfering with the bolt 4 closest to it, so that the dimension l between these two members 7 and 4 can be obtained. There is no need to increase this dimension l at all; rather, this dimension l can be reduced to the necessary minimum.

Therefore, the towing hook 2 equipped with the hook stopper 5 can be made smaller, and thereby the cost and weight can also be reduced.

Furthermore, when the wire 11 is passed through or removed from the hook portion 10 of the towing hook 2,
There is no need to bend the stopper piece 7 of the hook stopper 5 to a large extent when the hook stopper 5 is hooked or unhooked.
Since the reaction force for returning to the original position as shown by the solid line is also reduced, the wire 11 can be easily and smoothly connected and disconnected, and the workability can be improved.

[Effect of idea]

As mentioned above, this invention has the hook stopper 5 attachment base interposed and fixed between the base body and the attachment base of the towing hook, so that the hook extends from the vertically bent part of the stopper piece of the hook stopper to the tip of the hook that it comes into contact with. Since the dimensions of the stopper piece can be increased, the amount of deflection of this stopper piece can be reduced, and the durability of the footstopper can be improved. When the piece bends, there is no interference with the mounting base and the bolt, and the towing hook can be made smaller.

[Brief explanation of drawings]

1a and 1b show an embodiment of this invention, in which FIG. 1a is a side view, FIG. 1b is a view taken along arrow b in FIG. 1a, and FIGS. The figures show conventional examples, and FIG. 2 is a side view corresponding to FIG. 1a, and FIG. 3 is a perspective view of another conventional example. 1...Base body, 2...Tow hook, 3...Mounting base, 4...Bolt, 5...Hook stopper,
6...Mounting base, 7...Stopper piece, 8...
Hook tip, 9... relief molding part (unusual hole).

Claims (1)

[Scope of utility model registration request] In a towing hook device in which a stopper piece of a hook stopper is brought into contact with the tip of the hook of a towing hook that is attached by bolting to a base body,
The attachment base of the hook stopper is interposed between the base body and the attachment base of the towing hook, and is fastened together with the attachment base to the base body with bolts. 1. A towing hook device equipped with a rope detachment prevention device, characterized in that a mounting base is formed with a relief molded portion to avoid interference with a bolt.