JPH02274603A - Side rope disengagement preventing mechanism for non-metallic tire chain - Google Patents

Abstract

PURPOSE:To simplify the manufacturing process by providing a rope engaging part made monolithically with a tire chain body so as to project into an opening between the connecting part and the hanging part of a connecting hook, and setting a gap formed between the rope engaging part and the connecting hook smaller than the diameter of a rope. CONSTITUTION:A rope engaging part 15 is formed monolithically with a tire chain body 10 to be projected from the end part to which a connecting hook 20 is attached to the connecting hook 20 side. A semicircular groove 16 having the width and depth equivalent to the diameter of material of the connecting hook 20 is formed on the back of the rope engagingly locking part 15, and the connecting hook 20 is engaged with the groove and attached to it. A gap 25 formed between the rope engagingly locking part 15 and a hanging part 23 is set smaller than the diameter of a side rope 30. In this constitution, the rope engagingly locking part 15 is lifted outward, the loop part 32 of the rope 30 is pushed into an opening 24, and then the rope engagingly locking part 15 is returned to its original position to load the rope. By this constitution, the manufacturing process can be simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mechanism for preventing the side ropes of a non-metallic tire chain from coming off at both end connecting portions.

(Prior art) A non-metallic tire chain has hooks attached at appropriate intervals along the inner and outer edges of a tire chain body formed into a net shape, for example, and the inner hook has a connecting hook at one end. This non-metallic tire chain has a fixed side rope attached to it. When attaching this non-metallic tire chain to a tire, wrap the tire chain body around the tire tread surface and attach one end of the side lobe inside the tire chain body. The loop part of the other end of the side lobe is hooked to the hook provided on the connecting hook of the tire chain, and a ring-shaped rubber band is hooked to the hook on the outside of the tire chain body. ing.

The connecting portions at both ends of the side lobes of the non-metallic tire chain attached to the tire receive tension in the tire circumferential direction when the vehicle is running normally, so the loop portion of the side lobe cannot be pulled out from the connecting hook. Although it will not be released, if the vehicle suddenly starts 1. When stopping or stopping, the tension of the side lobes may momentarily loosen, and when this happens, the loops of the side lobes come off the connecting hooks, causing the tire chain to become loose. The stability of the worn state may deteriorate and the anti-slip performance may be affected.

Therefore, in order to solve this problem, a connecting hook equipped with a mechanism to prevent the side lobe from coming off has been developed.
The methods described in Publication No. 06, Japanese Utility Model Application Publication No. 639007, etc. have been proposed.

The connecting hook disclosed in Japanese Utility Model Application Publication No. 60-132908 has a width narrower than the side lobe between opposing hook parts formed by mutually bending both ends of a metal bar inward. A flat plate-like elastic piece member made of rubber or the like is integrally molded with a gap formed therein, and a concave portion for stably locking the side 1 cope is provided on the side of the elastic piece member. When the loop portions at both ends of the side lobe are to be hooked to the hook portions of the connecting hook, the elastic piece member is bent and deformed to widen the width of the gap portion. When the side lobe is hooked, the elastic piece returns to its original shape due to its own elasticity, so even if the tension of the side lobe loosens while the vehicle is running, the loops at both ends of the side lobe can be pulled out from the gap between the connecting hooks. It is now impossible to take out.

The connecting hook disclosed in Japanese Utility Model Application Publication No. 63-193906 is an improvement of the connecting hook disclosed in Japanese Utility Model Application Publication No. 1-132908, in which a bent portion is formed at the integrally molded portion of the elastic piece member of the metal bar material. In addition, the first elastic piece member is thick on the base side and thin on the tip side, and is extended to approximately the center F of the hook part to tighten the side lobe. In addition to making it easy to bend the tip of the elastic piece member during attachment and detachment operations, even if the tension of the side cope is loosened and the elastic piece member receives pressing force from the loop at one end of the side tab, it will not bend easily. The side surface of the elastic piece member on the opposite side contacts the tip end face of the opposing hooking part 7 to prevent deformation of the elastic piece member and prevent the width of the gap between the elastic piece member and the hooking part from expanding. be.

The connecting hook disclosed in Japanese Utility Model Application Publication No. 1-9007 is provided with a fastening part for attaching one end of the side 1 cope to one end of the hook body made of steel wire, and the other end of the hook body is attached to the fastening part side. The hook is folded back 7 to form a hook 2, and a substantially U-shaped retaining piece made of highly elastic steel wire is attached to the hook formed between the hook and the fastening section. With the bent part of the stopper piece pressed against the inside of the tip of the hook part, both ends are pivoted to the fastening part 2, and the front positions of both shafts are offset from each other in the overall length direction of the hook body. . When hooking the loop part on the other end of the side lobe to the hook part CX' of the connecting hook,
Push the retaining piece inside the connecting hook to release the pressed state against the hook. When the retaining piece is pushed inside the connecting hook 2, the bent part is twisted in one direction and tries to return to the other direction due to the difference in rotation angle of the shaft attachment part between one end and the other end of the retaining piece. When an elastic force is generated and the force pushing the retaining piece is released, the bent part of the retaining piece returns to its original position and rotates, presses against the inside of the tip of the hook, and closes the hook. There is.

[Problem to be solved by the invention]

Above! As mentioned above, all of the side lobe retaining mechanisms adopted in conventional non-metallic tire chains include an elastic piece member 5 made of rubber or the like, or a retaining piece made of high elastic steel wire on the connecting hook itself. It is installed,
There is no particular problem in that the side lobe can be easily attached and detached from the connecting hook, and it has a function that reliably prevents the loop part of the hooked side lobe from coming off the connecting hook, but the connecting hook itself This eliminates the high manufacturing cost due to the process of integrally molding an elastic piece such as rubber or attaching a retaining piece made by processing a high elastic steel wire into a U-shape. There is a drawback that there is no

The present invention was made in order to eliminate such drawbacks, and an object of the present invention is to provide a non-metallic tire chain in which a mechanism for preventing the side ropes from coming off is provided in the tire chain body.

[Means to solve the problem]

In order to achieve the above object, the present invention includes a non-metallic tire chain body made of an elastic material such as rubber, a side lobe attached to at least the inner circumferential side of the tire of the tire chain body, and a side lobe attached to one end of the tire chain body. One end of the lobe has a fastening part to which the other end of the side lobe is fastened, and the loop part of the side lobe is between the fastening part and the other end to which the loop part of the other end of the side lobe is fastened. A non-metallic tire chain comprising a connecting hook separated by an opening that can be accessed and removed, wherein the lobe lock is integrally molded from the same material as the tire chain body and protrudes from the tire chain body toward the opening of the connecting hook. A section is provided. The gap formed between the lobe locking part and the fastening part and the hooking part of the connecting hook is set to be smaller than the diameter of the side lobe.

Attach the tire chain body from both front and back sides using the attachment part provided on the connecting hook, with the tip part facing the side surface of the tire chain body, and attach one side of the rope locking part of the tire chain body to the tip part of this attachment part. It is preferable to bring them into contact with each other.

[Effect]

In the non-metallic tire chain equipped with the side lobe detachment prevention mechanism of the present invention, when the loop portion of the side lobe is hooked to the connecting hook, the lobe protrudes from the tire chain body and is located within the opening of the connecting hook. The distal end portion of the locking portion is lifted and bent to deform, and the lobe locking portion is removed from the opening of the connecting hook and held in the open state. After the loop portion of the side lobe is hooked to the connecting hook in this state, when the force lifting the lobe locking portion is released, the rope locking portion returns to its original position by its own elastic force.

Even if the loop portion of the side lobe that is hooked to the connecting hook comes into contact with one side of the lobe locking portion when the tension due to the tension in the circumferential direction of the tire is relaxed,
The other side of the lobe locking part is pressed by the attachment part or the fastening part provided on the connecting hook to prevent deformation or movement, so the gap formed between it and the locking part of the connecting hook is The original size is retained.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a partially omitted plan view showing an embodiment of a non-metallic tire chain equipped with a side rope stopper mechanism according to the present invention.

The tire chain body IO is formed by covering an elongated core material (not shown) with a predetermined length and width, which is made by braiding reinforcing cords into a net shape, with an elastic material such as rubber or synthetic resin. It is.

Hooks 11 on which rubber bands (not shown) are hung are attached at appropriate intervals to one side edge in the length direction of the tire chain body lO (the side edge placed on the outside of the tire), A hook 12 is attached to the portion when connecting the other end. In addition, hooks 13 are attached at appropriate intervals to the other side edge in the length direction of the tire chain body 10 (the side edge placed inside the tire), and a hole provided at one end ( (See FIG. 2) A connecting hook 20 is attached to 14. These hooks 13 are crimped with side lobes 30, and the connecting hooks 2
A loop portion 31 (see FIG. 8) at one end of the side lobe 30 is fixed to the side lobe 30, and a loop portion 32 at the other end of the side lobe 130 is connected to the connecting hook 20.

In the above-mentioned non-metallic tire chain, as shown in FIGS. 2 and 3, the tire chain main body lO has a connecting hook 20 connected to the connecting hook 20 from the end where the connecting hook 20 is attached.
A lobe locking portion 15 projecting to the side is integrally molded.

This lobe locking part 15 is integrally molded during the molding of the tire chain main body 10 using a partially modified mold for molding the tire chain main body 10, and a connecting part is provided on the back surface of the base end part. A semicircular groove 16 having a width and depth approximately equal to the material diameter of the hook 20 forms the tire chain body 10.
It is opened in the length direction.

The lobe locking portion 15 of the tire chain body 10 and the connecting hook 20 attached to the tire chain body 10 are as follows:
The mutual shapes and dimensions are set so as to have the positional relationship shown in FIGS. 4 and 5.

The connecting hook 20 is made of a steel wire rod having an appropriate diameter and is bent into the shape (original shape) shown in solid lines in FIGS. 21, a fastening part 22 to which the loop part 31 at one end of the side lobe 30 is fastened, a catch part 23 to which the loop part 32 at the other end of the side lobe 30 is fastened, and a fastening part 22. and the hooking part 23 [1j7 and the opening 24 through which the loop part 32 of the side lobe 30 enters and exits]
It is composed of. The attachment part 21 has a front part whose tip part is bent at right angles and a back part which is bent from the front part to face each other with the same width as the tip part, and the front part is expanded with respect to the back part. We are open. The fastening part 22 is bent in an annular shape from the lower end of the back side of the mounting part 21 to the left side, and the part that contacts the surface of the back side of the mounting part 21 is the mounting part 2.
1 and extends to the right. The hook portion 23 is bent in a hook shape from an extended portion of the fastening portion 22 toward the same side as the fastening portion 22, and its tip faces the proper fastening portion 22 across the opening 24.

When attaching the connecting hook 20 to the tire chain body 10, insert the tip of the attachment part 21 of the connecting hook 20 into the hole 14 of the tire chain body 10 from the back side to the front side, and then attach the connecting hook 20 to the tire chain body 10. At the position where the extension part of the fastening part 22 is fitted into the groove 16 of the lobe locking part 15 of the tire chain main body 10, the mounting part 2 of the connecting hook 20 is inserted.
10 Tire chain body l by front side part and back side part
Tighten O and attach from both front and back sides. In this state, the attachment portion 21 of the connecting hook 20 assumes the shape shown by the broken line in FIG. 6, with its tip portion 21a facing the side surface of the tire chain body 10.

As a result, the lobe locking portion 1 of the tire chain body IO
The side surface of the distal end portion of the connecting hook 20 faces the distal end surface of the hooking portion 23 of the connecting hook 20 with a gap 25 in between, and the side surface of the lobe locking portion 15 on the opposite side faces the attaching portion of the connecting hook 20. 21, and deformation or movement toward the fastening portion 22 is restricted (see FIG. 8). In this state, the side surface of the lobe locking part 15 and the connecting hook 2
The groove 25 formed between the tip surface of the hooking part 23 of
The width (opposing distance) is set to be smaller than the diameter of the side lobe 30.

Regarding the shape of the lobe locking portion 15 of the tire chain body 10, the shape of the lobe locking portion 15 and the locking portion 2 of the connecting hook 20 are as follows.
3 is smaller than the diameter of the side lobe 30, and the loop portion 32 of the side lobe 30 is smaller than the diameter of the side lobe 30.
Any shape can be selected as long as it does not impede the necessary movement of the side lobe 30 when the side lobe 30 is latched onto the latching portion 23 of the connecting hook 20. Alternatively, the lobe locking portion 15 may be in contact with the tip of the locking portion 23 of the connecting hook 20 to close the opening 24, so that no gap is formed.

Note that the material for forming the lobe locking portion 15 of the tire chain body IO may be made of only an elastic material such as rubber, but a reinforcing cord may be embedded therein, or a metal spring such as a leaf spring may be used as necessary. By burying it, the bending strength and spring strength can be increased.

The procedure for making a tire from the non-metallic tire chain having the above structure is the same as before, but the side lobe 30
When the loop portion 32 of the tire chain body 10 is to be hooked to the latching portion 23 of the connecting hook 20, the tip portion of the lobe latching portion 15 of the tire chain body 10 located inside the opening 24 of the connecting hook 20 is pulled outward. (in the direction of the arrow in FIG. 5), the proximal end portion of the lobe locking portion 15 is bent and deformed against its elasticity, and the rope locking portion 1 is lifted from the opening 24 of the connecting hook 20.
5 is removed to make it open. While maintaining this state, the loop portion 32 of the side rope 30 is hooked to the hook portion 23 through the opening 24 of the connecting hook 20. When the side rope 30 is completely latched and the force lifting the rope locking part 15 is released, the rope locking part 15 uses its own elastic restoring force to lift the connecting hook 20.
It returns to its original position within the opening 24 of.

The side rows 130 connected via the connecting hooks 20 in this manner are activated when the vehicle suddenly starts or stops and the tension in the circumferential direction of the tire momentarily loosens. The loop portion 32 latched to the latching portion 23 comes off from the latching position and the latching portion 22
The loop portion 32 comes into contact with the side surface of the rope locking portion 15 and connects the rope locking portion 15 to the connecting hook 2.
0, the side surface of the rope locking part 15 on the fastening part 22 side is in contact with the tip part 21a of the attachment part 21 of the connecting hook 20, so the original position is changed. Deformation and movement will be prevented. Therefore, the size of the gap 25 set between the rope locking portion 15 and the locking portion 23 of the connecting hook 20 does not increase, so that the loop portion 32 of the side rope 30 can be pulled out from the connecting hook 20. It is possible to reliably prevent it from coming out.

Side rope 30 hooked to the connecting hook 20
The operation for removing the loop portion 32 is also performed with the rope locking portion 15 being bent and deformed outward against its elasticity, similar to the operation for latching.

The non-metallic tire chain of the above embodiment is of a type in which the side ropes are connected only to the inside of the tire, but the non-metallic tire chain is of a type in which the side ropes are connected not only to the inside of the tire but also to the outside of the tire. Regarding the chain,
This invention can be applied.

9 to 12 show other embodiments of the side rope retaining mechanism of the present invention.

In the connecting hook 20 of this embodiment, one end of a steel wire is bent into an annular shape to provide a fastening part 22, and the other end is bent into a hook shape toward the fastening part 22 to provide a fastening part 23. is provided, and the hook part 23
The distal end thereof is opposed to the fastening part 22 with the opening 24 in between.

A loop portion 31 at one end of the side row 130 is fastened to the fastening portion 22 of the connecting hook 20.

This connecting hook 20 is arranged in an upright state in parallel at a position slightly apart from the side edge of the tire chain main body IO, and in this state, the loop portion 31 of the side rope 30 can be attached to the tire chain main body IO via the hook 35. be.

A connecting hook 2 is integrally formed with the tire chain body 10.
The rope locking part 15 located in the opening 24 of 0 has a thickness thinner than that of the tire chain main body IO and protrudes to a position beyond the attachment position of the connecting hook 20, and connects one side surface with the locking part 23 of the connecting hook 20. A gap 25.26 is formed between the distal end surface of the connecting hook 20 and the opposite side surface of the fastening part 22 of the connecting hook 20, and the width of each of these gaps 25.26 is (pair spacing) is set to be smaller than the diameter of the side row 130.

When hooking the loop portion 32 at the other end of the side rope 30 (indicated by a broken line in FIG. 9) to the hooking portion 23 of the connecting hook 20, remove the rope locking portion 15 as shown in FIG. After opening the opening 24 of the connecting hook 20 by bending it in the opposite direction and latching the loop part 32 of the side rope 30 through this opening 24, the lobe locking part 5 returns to its original position by its own elastic force. let

Even if the tension of the side row 130 connected to the connecting hook 20 loosens and the loop portion 32 of the side row 130 latched to the hook portion 23 comes into contact with the rope locking portion 15, the rope locking portion 15 will not be connected. Although the hook 20 is deformed to the position where it contacts the opposing surface of the fastening part 22, deformation or movement after being pressed by the fastening part 22 is prevented, so that the rope fastening part 15 and the connecting hook 20 are prevented from deforming or moving. The gap formed between the side rope 30 and the stop portion 23 maintains the originally set dimension, and the loop portion 32 of the side rope 30 does not come out from the connecting hook 20.

〔Effect of the invention〕

As explained above, the Zydrob detachment prevention mechanism of the present invention has an opening between the fastening part of the connecting hook and the hook lF part.
On the 1st part side, the tight chain body and body-molded lobe locking part protrude from the mouth, so that even if the tension of the side lobe connected to the connecting hook loosens, it will not be latched to the locking part. The loop portion of the side lobe is configured so that it will not come out from the gap between it and the lobe locking portion. Therefore, according to the present invention, similarly to the conventional connecting hook equipped with this type of mechanism, it is possible to easily attach and detach the side lobes, and a highly safe detachment prevention mechanism is obtained. The lobe locking part can be integrally molded by making a slight modification to a part of the mold for forming the tire chain body, and there is no need to install special parts or process the connecting hook itself. Since the manufacturing process can be simplified and the manufacturing cost can be reduced.

[Brief explanation of drawings]

Fig. 1 shows an example of a non-metallic tire chain equipped with a size 10-brake stopper mechanism according to the present invention, with parts omitted.
Fig. 2 is a partially enlarged view showing the lobe locking part of the tire chain main body in Fig. 1, Fig. 3 is a side view of Fig. 2, and Fig. 4 shows the connecting hook. Plan view 5 shows the state attached to the tire chain body, Figure 5 is a side view of Figure 4, Figure 6 is a side view showing the original form of the connecting hook, Figure 7 is its front view, and Figure 8 is the side view. FIG. 9 is a perspective view showing a state immediately before the connecting portions at both ends of the lobe are connected; and FIG.
The figure is a side view of FIG. 9, the first diagram is a sectional view taken along the line A--A of FIG. 9, and FIG. In the figure, 10 is the tire chain body, 15 is the mouth/branch
) part, 20 is a connecting hook, 21 is a mounting part, 22 is a fastening part, 23 is a hanging part, 24 is an opening, 25 is a gap, 30
are side lobes, and 3132 are loop portions of the side lobes. Figure 1 Figure 4 Figure 5 Figure 6 Figure 7 Figure 2 Figure 3 Figure 8

Claims (2)

[Claims] (1) A non-metallic tire chain body made of an elastic material such as rubber, a side rope attached to at least the inner circumferential side of the tire, and a stopper to which one end of the side rope is fixed. A latching part, on which the loop part of the other end of the side rope is latched, is provided between the latching part and an opening through which the loop part of the side rope can enter and exit. A non-metallic tire chain comprising a connecting hook, wherein a rope locking portion protruding from the tire chain body toward the opening of the connecting hook is integrally molded from the same material as the tire chain body, and the rope locking portion and A mechanism for preventing a side rope from coming off of a non-metallic tire chain, characterized in that a gap formed between a fastening part and a hanging part of a connecting hook is made smaller than the diameter of the side rope. (2) The attachment part provided on the connecting hook attaches the tire chain body from both the front and back sides, the tip part faces the side surface of the tire chain body, and one side of the rope locking part of the tire chain body attaches to the connecting hook. The non-metallic tire chain side rope detachment prevention mechanism according to claim 1, wherein the mechanism is in contact with the tip end of the attachment portion of the non-metallic tire chain.