JPH023922Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is suitable for driving on snowy roads or muddy surfaces.
This relates to a tire chain attached to the drive wheels to prevent tire slippage.

"Prior Art" and "Problems to be Solved by the Invention" There are already many known examples of the tire chain described above. However, all of them have important practical problems in that they are difficult to attach to tires and lack ease of attachment.

The purpose of the present invention is to solve the above-mentioned conventional problems and provide a new tire chain that is extremely easy to attach to tires.

``Means for Solving the Problems'' The present invention, which achieves the above objectives, is ``consisting of a combination of a pair of vertical chains connected in the shape of a rope ladder and a number of horizontal chains. is provided with a hook connecting portion consisting of a hook at one end and a latching link at the other end that is hooked to the hook, and the hook connecting portion on one side that is located inside the tire when installed is attached to the tip of the hook. In addition to forming a bulging portion, the locking link is also formed with a bulging hollow portion that loosely fits and passes through the bulging portion only when the locking link is rotated in the tightened locking position with the mating hook. In the side hook connection part, a check spring is provided on the hook to prevent the latching link from coming off, and a fulcrum pin for the ram tool is attached to a bracket provided on the hook near the top of the check spring. The tire is installed horizontally, and the horizontal chain is wound around the outer circumference of the tire along the tire ground contact area, and the vertical chain is tightened and attached.

"Operation" According to the tire chain of the present invention having the above configuration, when the hook connecting portion located on the inside of the tire is simply hooked and connected, and then the hook connecting portion on the outside of the tire is tightened and connected using a ram tool. Since it can be attached precisely to the outer periphery of the tire, attachment and detachment can be done with just one touch, making it extremely simple and quick.

"Example" A detailed explanation will be given below based on an example. In FIGS. 1 to 5 showing one embodiment of the invention, FIG. 1 shows the tire chain according to an embodiment of the present invention attached to a tire, FIGS. 2 and 3 show the hook connecting portion thereof, and FIG. 4 shows the hook connecting portion. The ram tool used for tightening connections is shown. First, in FIG. 1, the tire chain 1 of the present invention consists of a pair of vertical chains 2A and 2B that are wound along the outer and inner sides of a tire 4.
and a large number of horizontal chains 3 for preventing slips, which are connected transversely at a required pitch between the vertical chains 2A and 2B and wound transversely along the ground contact area of the tire 4. It forms a rope ladder-like chain.

The ends of the vertical chains 2A, 2B are provided with hook connecting parts consisting of a hook at one end and a locking link at the other end, and the vertical chains 2A, 2B are connected in an annular manner and are tightly wound around the tire 4. It is designed to be done.

In detail, referring to FIGS. 2 and 3, the end of the vertical chain 2B located inside the tire 4 has a hook 6' at one end and a latching link 7' that is latched to the hook 6'. A bulge 8 is formed at the tip of the hook 6'. and latching link 7'
A bulging hollow part 9 is formed in the latter half of the bulging part 8 through which the bulging part 8 is loosely fitted, and the latching link 7' is in the latching position in the tightened state shown by the solid line in the second figure, that is, the latching point P.
Only when the hook 6' and the latching link 7' are in contact with each other at the contact point when tension is generated between them, and the latching link 7' is rotated in the direction of the arrow A shown in the figure,
The bulging portion 8 of the hook 6' passes through the bulging hollow portion 9 of the locking link 7', so that both can be locked or detached.

On the other hand, at the end of the vertical chain 2A attached along the outer side of the tire 4, there is a hook 6'' at one end.
A latching link 7'' for latching onto the hook 6'' is provided at the other end, and a cantilever-shaped non-return spring 1 is provided on the hook 6'' to prevent the latching link 7'' from coming off.
0 is provided so as to obliquely close the opening of the hook 6''.A fulcrum pin is attached to the bracket 11 extending from the hook 6'' in the upper vicinity of the longitudinal middle of the check spring 10. 12 is installed horizontally, and the fulcrum pin 12 hooks and locks the fulcrum part of a ram tool 13, which will be described later, and forcibly deforms the check spring 10 by the action point of the ram tool, thereby forming a latching link. 7" can be attached and detached.

Further, as shown in FIG. 4, the ramming rod tool 13 has a fulcrum part 15 formed at the tip of the main body 14 of the rod to be hooked and locked to the fulcrum pin 12, and an action point 16 near the fulcrum part 15. Furthermore, a slightly longer tension chain 17 is connected to the intermediate portion of the main body 14, and a hook 18 is attached to the tip of the tension chain 17.

Then, when the tire chain 1 is wound around the outer circumference of the tire 4, the lever tool 13 hooks and locks the hook 18 of the lever tool 13 at an arbitrary position near the latching link 7'' of the vertical chain 2A. When the portion 15 is engaged with the fulcrum pin 12 and pulled in the direction of the arrow B shown in the figure, the point of action 16 presses the check spring 10 to open the tip of the hook 6'', and at the same time,
Both ends of the vertical chain 2A are pulled together by the tension chain 17 so that the hook 6'' can be latched onto the hook 6'' by the latching link 7''.

Incidentally, hooks 19 having non-return springs 10 are attached to both ends of the horizontal chain 3 having the above structure, as shown in FIG.
It is structured so that it can be connected removably by being hooked onto the link of the.

The tire chain 1 having the above structure operates as follows. That is, the tire chain 1 is wrapped around the outer circumference of the tire 4, and the hook 7' on the inside of the tire is first
Bend the next link 20 at an acute angle as shown by the dotted line in Figure 2, insert the locking link 7' into the opening of the hook 6' so that it is roughly parallel to the hook 6', and connect both at the locking point P. bring it into contact. Thereafter, when the locking link 7' is rotated in the direction of the arrow A shown in the figure while maintaining this posture, the bulging portion 8 at the tip of the hook 6' loosely fits through the bulging hollow portion 9 of the locking link 7', and the two are connected to each other. are connected smoothly. Incidentally, since the above-mentioned connection operation can be performed with the tire chain 1 in a relaxed state, the connection can be made extremely easily.

Next, by performing the above operation using the lever tool 13 to pull both ends of the vertical chain 2A on the outer periphery of the tire 4, and at the same time deforming the check spring 10 of the hook 6'', the latching link 7'' is It is hooked and connected to the hook 6'', and the entire tire chain 1 can be tightened and attached to the outer periphery of the tire 4.The above-mentioned tightening connection of the vertical chain 2A is performed using the lever tool 1.
3 generates a large tensile force in the vertical chain 2A, and the tire 4 is elastically compressed by this tensile force, so the hook connection part is connected very easily, and after the connection, the tire chain 1 is Due to the elasticity of the tire 4, the outer circumference of the tire 4 is appropriately tightened.

The tire chain 1, which is tightly attached to the tire 4 as described above, is able to maintain its grip even if momentary loosening occurs in the vertical chains 2A and 2B due to deformation of the tire 4 due to ground pressure or vibration impact during driving. Since the hook 6'' of the vertical chain 2A has a non-return spring 10, the hook connection part does not come off, and the hook 6' of the vertical chain 2B and the latching link 7' are brought into contact with each other at the latching point P. Since the connection does not come off unless the hooks are rotated relative to each other, the hook connection portion will not come off during driving, and an extremely stable connection action can be achieved.

In addition, when removing the tire chain 1 from the tire 4, it is removed by performing the reverse procedure of the above-described mounting operation.

"Effects of the Invention" In the tire chain of the present invention described above, the rope ladder-shaped tire chain 1 is wrapped around the outer circumference of the tire 4, the inner hook connecting part is connected, and then the outer hook connecting part is connected with a lever tool. Since it can be installed only by tightening and connecting, it is extremely easy to install and can be installed in one touch, and has excellent installation performance that anyone including women, inexperienced people, etc. can easily, quickly, and accurately install. . And, for example, there is no need to operate the hook stopper ring in a narrow hole with bare hands, unlike with conventional tire chains.
Since the aforementioned wearing operation can be performed using gloves, it can be easily worn even in extremely cold regions.

Furthermore, in the tire chain 1 of the present invention, if the lengths of the vertical chains 2A and 2B are selected in advance, the tightening force on the tire 4 will be moderately stable, so there will be no over-tightening and insufficient tightening, and the anti-slip effect will be improved. The desired tightening force can be stabilized. Further, in the tire chain 1 of the embodiment, only the horizontal chain 3, which is subject to severe wear, can be replaced, so that it has the advantage of being easy and economical to maintain.

As described above, the tire chain of the present invention has many practical effects such as excellent mounting properties.

[Brief explanation of the drawing]

Figure 1: shows the installed state of the tire chain of one embodiment of the present invention, A is its front view, B is its side view, Figure 2: Figure 1 shows the hook connection part on one side of the embodiment. Front view A and top view B, Figure 3: Front view A showing the hook connection part on the other side of the embodiment in Figure 1;
AA sectional view B, Figure 4: Front view of the lever tool used in the tire chain of the embodiment in Figure 1, Figure 5:
FIG. 2 is a side view showing the end of the horizontal chain of the embodiment in FIG. 1; Main codes: 1: Tire chain, 2A, 2B:
Vertical chain, 3: Horizontal chain, 4: Tire, 6',
6'', 18, 19: Hook, 7', 7'': Latching link, 8: Swelling section, 9: Swelling hollow section, 10: Check spring, 11: Bracket, 12: Fulcrum pin, 13:
Ramping tool.

Claims (1)

[Scope of claims for utility model registration] (1) A pair of vertical chains connected like a rope ladder,
It consists of a combination of a number of horizontal chains, and the ends of the pair of vertical chains are each provided with a link connection part consisting of a hook at one end and a latching link at the other end, and is attached to the inner side of the tire. A bulge is formed at the tip of the hook in the hook connecting portion on one side, and the bulge is loosely fitted into the latching link only when the hook is rotated in a tightened and locked position. A bulging hollow portion is formed, and the hook connecting portion on the other side is provided with a cantilever-shaped check spring for preventing the hook link from coming off, and in the upper vicinity of the check spring. A bracket body provided on the hook is provided with a fulcrum pin for a ram tool installed horizontally, and the horizontal chain is wound along the tire ground contact area, and the vertical chain is tightened and attached. A tire chain with a unique structure. (2) The tire chain according to claim (1) of the utility model registration claim, in which the horizontal chains are removably connected by hooks.