JPH0530963Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) The present invention relates to a tire chain attached to an automobile, and the present applicant has already developed it in 1983.
This relates to an improvement of the tire chain proposed in Publication No.-117504.

(Prior art) In other words, the tire chain proposed in Japanese Utility Model Application Publication No. 59-117504 has approximately rectangular connecting portions wound inward at both ends of a pair of approximately semicircular inner supports. One end side connecting portion of each inner support is connected by a chain link, and the other end side connecting portion of each inner support is connected so as to be removably locked with a hook and a plurality of chain links. Each inner support body was formed so as to be foldable in half.

In some cases, a pair of locking tools each having two rivet holes at the proximal end are provided at both ends of the inner support, and rivets are inserted into each of the rivet holes and each rivet hole of the mounting member. A device that could be inserted and stopped was proposed (for example, in 1983)
−159204).

(Problem to be solved by the invention) However, in the former method, a hook and a plurality of chain links are connected to approximately rectangular connecting portions wound inwardly on the other end sides of a pair of inner supports. As a result, the locking part of the connecting part on the other end of each inner support moves, making the locking part unstable, and the appearance of the locking part of the connecting part on the other end of each inner support moves. However, the structure is complicated and expensive.

In addition, in the latter case, when attaching each locking tool to both ends of the inner support, it is necessary to insert a rivet into each rivet hole of each locking tool and each tack hole of the mounting member. It has the disadvantage that the structure is complicated and expensive, and because the rivets are simply inserted into each rivet hole of each latching device and each rivet hole of the mounting member, there is a risk that each latching device may fall off during driving. It was hot.

Therefore, the present invention was devised to solve the above-mentioned problems, and it not only makes the inner support look good in appearance and has a simple and inexpensive structure, but also makes it easier to run. To provide a tire chain that can reliably prevent each locking tool from falling off and rotating at times.

(Means for solving the problem) In order to achieve the above-mentioned purpose, the present invention
Crushing portions are provided at both ends of the open side of the approximately C-shaped inner support body with a partially open side to prevent falling off, and caulking pieces are provided at the proximal ends of both open side ends of the inner support body. A pair of mutually removable locking tools are wound around and attached in a substantially cylindrical shape so that the caulking piece is hooked to the crushed portion, and further, a pair of locking devices that are detachable from each other are attached to the center portion of the inner support body in the longitudinal direction on the closed side. , a substantially double-wound annular coil spring portion that can be expanded freely against elastic force in the closing direction is provided in succession.

(Function) By using the above-mentioned technical means, when attaching each locking device to both open ends of the inner support, the proximal end of each locking device is attached to the collapsed portion of both open ends of the inner support. Make sure to hook the caulking piece. Furthermore, the locking parts at both open end portions of the inner support are prevented from moving, thereby stabilizing the locking portions at both open end portions. Furthermore, when opening and closing the inner support body, the elastic force of the coil spring portion in the closing direction can be utilized.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

As shown in FIGS. 1 to 3, a partially open C-shaped inner support 1 is provided with crushing parts 2 at both ends of the open side to prevent the inner support 1 from falling off. A pair of locking tools 5, 6 which are provided at both ends of the open side with a caulking piece 4 at the base end and are detachable from each other.
is attached by winding it into a substantially cylindrical shape so that the caulking piece 4 is hooked onto the crushing portion 2.

That is, each of the locking tools 5 and 6 has a caulking piece 4 at the base end of the locking plate 3, and one or more rectangular locking holes 7 in the longitudinal center of the locking plate 3. 2
A hook-shaped locking piece 8 is provided at the tip of the locking plate 3.
are formed so that the locking pieces 8 can be releasably locked in the locking holes 7 of each other.

Although the locking pieces 8 of each of the locking tools 5 and 6 are shown as being protruded by bending the tip of the locking plate 3 into a hook shape using a mold or the like, the present invention is not limited to this. First, as shown in FIG. 4, the distal end of the locking plate 3 may be cut and bent into a hook shape using a cutting die or the like at the same time, ie, so-called cut-and-raised processing may be performed to protrude. According to this, it becomes easy to bend and also has strong strength.

Further, in the longitudinal center portion of the inner support 1 on the closing side, there is a substantially double-wound shape (single-wound shape, triple-wound shape, quadruple-wound shape) that can be freely expanded against elastic force in the closing direction. A ring-shaped (circular, rectangular, elliptical, triangular, square, etc.) coil spring section 9 is connected.

Furthermore, several long protective tubes 10 and medium protective tubes 1 made of soft plastic or rubber are provided in the inner support body 1 except for the locking devices 5 and 6 and the coil spring portion 9.
1. Short protective tubes 21 are attached to the inner end of the cross chain 12 in an appropriate arrangement corresponding to the hooking position of the connector 13. In this case, the short protective tube 21
is located within the connector 13 of the crosschain 12.

Then, the other end of the outer side chain 14 is inserted into the substantially elliptical tightening link 15 at one end of the outer side chain 14 that is attached in a loop shape to the outside of the tire A, and then the outer side chain 1 is tightened.
A tightening spring 17 at the other end of the outer side chain 14 is locked to an appropriate chain link 16 near the other end of the outer side chain 14.

The tightening spring 17 includes a telescopic coil spring 18, a restraining link 19 that maintains the coil spring 18 within its elastic limit, and a locking hook 20 that locks onto an appropriate chain link 16 near the other end of the outer side chain 14. The hook 20 is formed larger than the inner diameter of the tightening link 15 of the outer side chain 14. according to this,
When the tire A is stored or attached to the tire A, the hook 20 of the tightening spring 17 is attached to the outer side chain 14.
Since it can be prevented from being pulled out from the tightening link 15 at one end, the mounting operation on the tire A is easy.

The tightening means for the outer side chain 14 is such that the other end of the outer side chain 14 is inserted into the tightening link 15 at one end of the outer side chain 14 and then tightened. Although the description and illustrations show that the tightening spring 17 at the other end of the outer side chain 14 is locked to the appropriate chain link 16, the tightening spring 17 at the other end of the outer side chain 14 is not limited to this. Tightening chain (not shown) on attached link 15 etc.
Alternatively, the tension springs 17 and the like at both ends of the tension chain may be locked to appropriate chain links 16 and the like near both ends of the outer side chain 14 after the tension chain is inserted through the central part in the longitudinal direction and tightened in a crosswise manner. .

To explain how the present invention is used, when it is mounted on a car tire A, first, as shown in FIG. After the inner support 1 is placed over the tire A from the upper or lower outer side to the lower or upper inner side of the tire A and the axle passes through the tire A, the inner support 1 is loosened by loosening the force at both open ends of the inner support 1. Both open ends of the body 1 are closed in a link shape by the elastic force of the coil spring portion 9, and the locking piece 8 of the other locking device 6 is locked in the locking hole 7 of one locking device 5. Alternatively, the locking piece 8 of one locking tool 5 can be locked in the locking hole 7 of the other locking tool 6. Next, the second
As shown in the figure, the other end of the outer side chain 14 is inserted into the substantially elliptical tightening link 15 at one end of the outer side chain 14 and tightened, and then the appropriate chain link near the other end of the outer side chain 14 is tightened. 1
6, a tightening spring 17 at the other end of the outer side chain 14
to lock it.

(Effects of the invention) That is, the present invention provides crushing parts 2 for preventing falling off at both ends of the open side of the substantially C-shaped inner support 1 with a partially opened part as described above, and At both ends of the open side of the body 1, there are caulking pieces 4 at the base end.
a pair of locking tools 5 which can be freely engaged and detached from each other,
6 is attached to the crushing portion 2 so that the caulking piece 4 is latched, it is possible to prevent the respective locking tools 5 and 6 at both ends of the open side of the inner support body 1 from moving. The locking portions at both ends of the open side are stable, and hooks and multiple chain links are attached to the approximately rectangular connecting portions wound inwardly on the other end sides of a pair of inner supports, as in the conventional case. The locking portions at both open end portions of the inner support body 1 have a better appearance than a connected structure, and the structure is simpler and can be provided at a lower cost.

Furthermore, when attaching the locking tools 5 and 6 to both open end portions of the inner support body 1, the pair of locking tools 5 and 6 are attached to both open end portions of the inner support body 1, and the crimping pieces are attached to the crushing portion 2. 4 is wound in a substantially cylindrical shape so as to be latched, and the screws can be secured by simply inserting rivets into each rivet hole of each locking tool and each rivet hole of the mounting member, unlike the conventional method. Not only is the structure simple and inexpensive, but also the locking tools 5 and 6 can be reliably prevented from falling off and rotating during travel.

In addition, a substantially double-wound annular coil spring portion 9 that can be expanded freely against elastic force in the closing direction is continuously provided in the longitudinal center portion of the inner support 1 on the closing side. Since the elastic force of the coil spring portion 9 in the closing direction can be utilized, the opening and closing operations of the inner support body 1 are easy, and only the coil spring portion 9 is connected to the central portion of the inner support body in the longitudinal direction on the closing side. Therefore, the inner support body 1 as a whole is light, making it extremely easy to attach it to the tire A.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of the invention when it is mounted on a tire and seen from the inside, Fig. 2 is a side view of the invention when it is mounted on a tire and seen from the outside. FIG. 1 is an enlarged exploded perspective view showing the respective locking parts at both open ends of the inner support body in FIG. 1, and FIG. 4 is an enlarged exploded perspective view showing another embodiment of the locking piece of each locking tool. DESCRIPTION OF SYMBOLS 1... Inner support body, 2... Crushing part, 3... Locking plate, 4... Caulking piece, 5... Locking tool, 6... Locking tool, 7... Locking hole, 8... Locking piece, 9...Coil spring part, 10...Long protection tube, 11...Medium protection tube,
12...Cross chain, 13...Connector,
14... Outer side chain, 15... Tightening link, 16... Chain link, 17... Tightening spring, 18
... Coil spring, 19 ... Deterrent link, 2
0...Hook, 21...Short protection tube, A...Tire.

Claims (1)

[Scope of utility model registration request] Crushing portions are provided at both ends of the open side of the approximately C-shaped inner support body with a partially open side to prevent falling off, and caulking pieces are provided at the proximal ends of both open side ends of the inner support body. A pair of mutually removable locking tools are wound around and attached in a substantially cylindrical shape so that the caulking piece is hooked to the crushed portion, and further, a pair of locking devices that are detachable from each other are attached to the center portion of the inner support body in the longitudinal direction on the closed side. , A tire chain characterized in that a substantially double-wound annular coil spring portion that can be expanded freely against elastic force in a closing direction is provided in succession.