JPH0321287Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a tire chain latching tool. When this latching tool is used, not only can the tire chain be attached and detached extremely easily, but also the tire chain can be firmly attached at the time of attachment. This product can be manufactured at low cost and is durable.

(Prior Art) As a conventional tire chain latching device, there is one described in, for example, Japanese Utility Model Publication No. 1609/1973. This is something like this:

That is, a longitudinal connecting ring is fitted to one end of the link,
One end of a C-shaped connecting piece is fitted to the other end of the longitudinal connecting ring. The free end of the C-shaped connecting piece can then be rotated into the longitudinal connecting ring. A round depression with a narrow entrance is formed at its free end, and the depression serves as a holding part. Also,
A rectangular hanging ring consisting of long sides and short sides is fitted onto the link, and a narrow part is formed on the short side at a position completely off-center. The entrance of the recess is sized so that only the narrow portion thereof can be passed through.

When attaching a tire chain, hold the terminal links to be connected with one hand, and hook the tips of the terminal links onto the bent portions of the C-shaped connecting pieces with the other hand. Then, while holding the C-shaped connecting piece with one hand, pass its free end through the longitudinal connecting piece and rotate it to the opposite side. Then, grasp the retaining ring with your free hand and insert the narrow part into the holding part of the C-shaped connecting piece through the narrow entrance. When the hand is released, the holding part of the C-shaped connecting piece is automatically removed from the position of the narrow part of the hanging ring, and the holding ring is prevented from coming off from the holding part of the C-shaped connecting piece.

The above-mentioned work is performed in two places: on the front side of the tire and on the back side.

To remove the tire chain, reverse the procedure.

(Problems to be Solved by the Invention) As is clear from the above, the only way to attach or detach a tire chain using the conventional latching tool from a tire is to use both hands.

Incidentally, this attachment/detachment work is performed on the front and back sides of the tire. Although it was easy to use both hands to work on the front side, it was difficult to use both hands to work on the back side. There is a narrow space under the car body. I had no choice but to crawl into a narrow space and use both hands in an extremely unnatural and cramped position. It was very difficult to operate both hands in such a position. He had to kneel down, and his jacket and pants were often soiled.

Not only that, but when this conventional method was used, it was very difficult to work with. When latching, the thin narrow part of the latching ring must be inserted through the narrow entrance of the holding part of the C-shaped connecting piece that hooks the terminal link. For behind-the-scenes work that is difficult to see,
It was difficult to align both positions. Even if the alignment was successful, the subsequent fitting process was also troublesome. This is because the narrow part of the retaining ring is precisely machined to a size that fits exactly into the entrance of the holding part. This is because if there is too much play, there is a risk that the retaining ring will come off from the holding part. For this reason, it took a lot of time to fit it in because it had to be re-installed many times. Also, after fitting it in, I had to check to see if the narrow part was removed from the position of the holding part. Confirmation work was difficult in places where it could not be seen. The task of removing it was similarly difficult.

Furthermore, this conventional type had a serious drawback in that it was easy to come off while driving. That is, when attached to a tire, the tire chain is tensed, and a tension force is generated that pulls the latching tool from both sides. Since the C-shaped connecting piece is C-shaped, the terminal link constantly pulls on the C-shaped bent portion. The tensile force that pulls the bent portion becomes a force that attempts to turn the C-shaped connecting piece outward, that is, a force that constantly attempts to remove the holding portion from the latching ring. For this reason, when severe vibration occurs due to high speed driving or rough road driving, the narrow part of the hanging ring and the holding part happen to coincide, causing the holding part to come off the holding ring. There was a risk of it being lost. If it comes off while driving, it could cause a serious accident.

This conventional method also had problems in terms of manufacturing. That is, it is necessary to form a specially shaped holding part and narrow part in each of the C-shaped connecting piece and the hanging ring. It had to be finished with high precision by machining, which was very expensive.

Not only was it expensive to manufacture, but there were also problems with strength. That is, the holding part and the narrow part are processed to be quite thin. Therefore, the strength has become very weak. For this reason, when the vibrations are intense, there is a risk that the tire chain will be damaged at the holding portion or the narrow portion, and the tire chain may come off. If it comes off while driving, it could lead to an accident.

The problem to be solved by this invention is to provide a tire chain latching tool that allows the tire chain to be easily attached and detached, has no fear of coming off during driving, is easy to manufacture, and has excellent strength.

(Means for solving the problem) The tire chain latching tool according to this invention is
The following is a solution to such problems.

That is, one end of the mounting ring 2, which has an elongated oval shape, is fitted into the rings 1, etc. on both sides of the first end of the tire chain A, which has chains connected like a ladder, and the other end of the mounting ring 2 is fitted. The hook 3 is attached to the mounting ring 2 by passing the other end through a small hole drilled at one end of the hook 3.
is attached so that it can rotate freely. This hook 3 is
The whole body is formed in an S-shape, and the free end side is a folded hook part 5, and the protrusion 4 is formed on the opposite side of the folded side. This is a latching tool in which a small latching ring 6 is fitted onto the ring 1 and the like.

(Function) The tire chain latching device according to this invention,
Attach the attached tire chain to the tire as follows.

First, wrap the tire chain A around the tire so that the hook 3 is hanging from it. Now, lift the ring 7 at the other free end of the tire chain A with one hand and hook it onto the protrusion 4 of the hook 3.
Put the upper part of it through the mounting ring 2. At this time, the ring 7 remains hooked to the protrusion 4 and does not fall, so it can be operated with only one hand. and,
When the upper part of the hook 3 is passed through the mounting ring 2 as described above, the ring 7
The upper end portion of the hook 3 is placed between the mounting ring 2 and the hook 3 in a state where the upper end portion thereof is hung on the hook 3. Then, while keeping this state with the same hand, use the free finger of the same hand to rotate the latch ring 6 downward and press it against the hook 3 while turning the hook 3 downward. The hook part 5 of the hook 3 is in a state of being latched.

When removing the tire chain, use the hook part 5.
All you have to do is lightly push the back of the hook 3 with one hand in the direction in which it comes off from the ring 6. Because the tire chain is under tension, the moment the hook portion 5 comes off the ring 6, the entire tire chain comes off at once.

Incidentally, when the tire chain is being attached, the tire chain is under tension, the latching ring 6 is pulling the hook part 5, and the ring 7 is pulling the curved part of the latching tool. And the third
As is clear from the figure, the tension between them serves as a force to more firmly fit the hook portion 5 into the latching ring 6.

(Example) An example of this invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing one embodiment of this invention. A shows a tire chain in which chains are connected in the form of a ladder. This tire chain A 1
One end of a mounting ring 2 having an elongated oval shape is fitted into a ring 1 on both ends. Note that the attachment ring 2 may be attached to this ring 1 or to an adjacent ring or the like. At the other end of the mounting ring 2 is an S-shaped hook 3.
The end is rotatably attached. A protrusion 4 is formed in the middle of the hook 3, and a portion below the protrusion 4 is a hook portion 5 that is folded upward. Also,
A small latching ring 6 is fitted onto the ring 1. This latching ring 6 may also be attached to another ring or the like adjacent to the ring 1 or the like.

As shown in FIG. 1, the tire chain A is first wound around the tire so that the hook 3 hangs therefrom. here,
Lift the ring 7 at the other free end of the tire chain A with one hand and hook it onto the protrusion 4 of the hook 3. Even if you release your hand at this point, the chain will be caught on the protrusion 4 and will not fall. Next, with the same hand, rotate the hook 3 so that it passes through the mounting ring 2, so that the state shown in FIG. You will be caught between 3 and 3. While keeping this position with the same hand, use the free finger of the same hand to rotate the latch ring 6 downwards, press it against the hook 3, and rotate the hook 3 downward, and the latch ring The lower part of the hook 6 is in the state shown in FIG. 3 in which the hook part 5 of the hook 3 is hooked. In this state,
The hook part 5 is firmly latched to the latching ring 6, so that the hook 3 will not come off while the car is running.

Next, another embodiment of this invention will be described with reference to FIGS. 4 and 5. In this example,
An elongated projecting piece 8 is formed on the opposite side of the hook 3 from the side on which the hook portion 5 is formed.

As shown in FIG. 4, when rotating the hook 3 upward from the state in which the ring 7 is hooked on the protrusion 4 of the hook 3, the hook portion 5 is moved upward with one or two fingers of one hand. While rotating, the protruding piece 8 can be rotated downward with the other finger of the same hand. That is, since rotational force can be applied at two locations, upper and lower, the hook 3 can be rotated smoothly.

In the state shown in FIG. 5 in which the latching ring 6 latches the hook portion 5 of the hook 3, the protrusion 8 is in contact with the ring 7, etc., and the hook 3 is rotated toward the center of the tire. prevents you from doing so. In other words, since the hook 3 is prevented from rotating in the direction in which the hook portion 5 comes off the latching ring 6,
This completely prevents the hook 3 from coming off while the car is running.

(Effect of the invention) When using the tire chain latching device according to this invention, the latching work can be done with only one hand. Therefore, the latching work on the back side of the tire can be done with one hand, so only one hand needs to be placed around the back side of the tire. Therefore, not only can the work be completed very easily and in a short time in a comfortable posture, but also the work will not get dirty, such as pants.

When removing the tire chain, use the hook part 5.
All you have to do is push the hook 3 lightly in the direction in which it comes off from the latching ring 6. If you do that, the tire chain will come off all at once. That is, even when removing it, a simple operation with only one hand is required.

Also, if you use something related to this idea,
There is no risk of the tire chain coming off while driving.
This is because, as mentioned above, the tension of the tire chain constantly works to firmly fit the hook portion 5 into the latching ring 6, making it increasingly difficult to remove it.

Furthermore, the device according to this invention can be manufactured by punching out a single plate. Therefore, it can be manufactured at extremely low cost.

Moreover, since there is no part where the width is narrowed,
There are no weak points in terms of strength.

[Brief explanation of drawings]

FIGS. 1, 2, and 3 are perspective views each illustrating the operation of one embodiment of this invention, and FIGS. 4 and 5 are perspective views each illustrating the operation of another embodiment. A... Tire chain, 1... Ring, 2...
Mounting ring, 3... Hook, 4... Protrusion, 5...
...Hook part, 6...Latching ring, 7...Ring.

Claims (1)

[Scope of utility model registration request] One end of the mounting ring 2, which has an elongated oval shape, is fitted into the rings 1, etc. on both sides of the first end of the tire chain A, which has chains connected in a ladder shape, and the other end of the mounting ring 2, The hook 3 is rotatably attached to the mounting ring 2 by passing the other end through a small hole drilled at one end of the hook 3, and the hook 3 is formed into an S-shape as a whole. The free end side has a folded hook part 5, the opposite side of the folded part has a protrusion 4, and a small latching ring 6 is fitted to the ring 1 etc. Latch for chain.