JPH0445921Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement in a tire chain that is attached to a vehicle tire as a slip prevention device when driving on a snowy road, an icy road, or a slippery road.

[Prior Art] As shown in FIG. 5, this kind of conventional tire chain A is made entirely of ordinary steel, and cross chains 3 are arranged at regular intervals between parallel side chains 1 and 2.
Connector 4 in which the chain ring 3a at the end of the cross chain 3 is inserted between the two folded U-shapes in order to span and connect the
The parallel proximal ends of parallel side chains 1 and 2 are chain rings 1
The connector 4 is rotatably but not removably attached by parallel folding attachment parts 4a and 4b that are folded upward through the connectors a and 2a.

In the figure, 5 is a hook latch, and 6 is a stopper.

Generally, when driving with Tire Chain A installed, it is said that if it is made of ordinary steel, it can cover approximately 100 km on a snow-covered expressway at 30 km/h.

[Problems to be Solved by the Invention] However, if the cross chain 3 is installed and used in a twisted state, a portion of the cross chain 3 will wear out and break within a short period of time.

Even if the cross chains 3 are worn evenly when installed in a normal state, after the aforementioned durability period has elapsed, the cross chains 3 that are most severely worn will begin to break.

In order to replace the broken cross chain 3 with a new cross chain 3, the parallel fold attachment parts 4a and 4b of the connector 4 must be unfolded and the connector 4 must be removed from the chain rings 1a and 2a of the parallel side chains 1 and 2. However, since it is impossible to do so manually, the connector 4 of the broken cross chain 3 is expanded and removed using the provided machine, and the base end of the connector 4 of the new cross chain 3 is attached to the chain rings 1a and 2a of the parallel side chains 1 and 2 from below. It will be installed by folding it upwards.

Therefore, the connector 4 of the broken cross chain 3
In some cases, the machine has to be discarded even though it is not damaged in any way, and since the machine is large, it cannot be kept on the vehicle all the time. Therefore, if the cross chain 3 breaks while driving, it cannot be replaced with a new one, and the vehicle must continue driving while hitting the mud on the tires, making noise, which is unpleasant and very dangerous, and also damages the vehicle body.

Even more so, when machinery is not provided, there are no repair specifications and the equipment is left unrepairable.

In view of the problems with conventional tire chains, this proposal provides a tire chain equipped with connectors attached to parallel side chains that allow both ends of the cross chain to be easily attached and detached without using mechanical force when exchanging old and new cross chains. It is something to do.

[Means for Solving the Problems] The above problems are achieved by the present invention adopting the following characteristic configuration means.

That is, the first feature of the present invention is a connector in which the proximal end is rotatably attached to the chain ring of the side chain in order to span and connect cross chains at equal intervals between parallel side chains. is formed so that it can pass freely through the locking rod, and its tip is curved upward, and the tip of the locking rod, whose base end is rotatably attached to the chain ring between the base ends, is raised upward to form the cross chain end. While the chain ring forms a locking stepped portion that can be freely locked, a hook portion that can be locked at the curved tip is provided continuously to the locking stepped portion, so that the end of the cross chain can be freely attached and detached. It is a tire chain.

A second feature of the present invention is a tire chain in which at least the cross chain in the first feature is made of boron steel.

[Operation] The present invention takes the above-mentioned measures, and forms the connector into a planar cinch buckle shape, and passes the chain ring at the end of the cross chain from the underside of the connector, and hooks it through the hook part of the locking rod to the locking step part. Once locked, the hook part is firmly latched to the warped end of the connector by the cross chain's tensile force and the locking rod's own weight, and will never come off during use.

To remove the chain ring at the end of the cross chain from the connector, lift the chain ring and lock rod, pull out the chain ring from the hook part, and pull it out to the bottom of the connector.

Furthermore, by making at least the cross chain of the tire chain of the present invention made of boron steel, durability can be improved.

[Example] Embodiments of the present invention will be described in detail with reference to the drawings.

Fig. 1 is a partial configuration diagram of this embodiment, Fig. 2 is an enlarged plan view showing the connection between the connector and the cross-chain end, Fig. 3 is an enlarged side view showing the process of removing the cross-chain end from the connector, and Fig. 4 is an enlarged bottom view with the cross-chain end removed from the connector. Note that the same members as those in the conventional example are given the same reference numerals.

In the figure, B is the tire chain of this example, 1, 2
is a parallel side chain, group 7 is a cross chain made of hardened boron steel, and 8 is a connector, in which the parallel base end is passed through chain rings 1a and 2a at equal intervals in the longitudinal direction of parallel side chains 1 and 2 from below. It is attached rotatably and non-removably by the parallel folding attachment parts 8a, 8b of the base half folded in, and the front half is expanded on both sides and the tip is curved upward, while the parallel folding attachment parts 8a, The tip of the locking rod 9, which is rotatably attached to the folded attachment part 9a which is inserted between the chains 1a and 8b and inserted through the chain rings 1a and 2a from above, is raised upward to attach the chain at the end of the cross chain 7. A locking step portion 9 in which the ring 7a can be locked freely
b, and on the other hand, the front half is formed into a so-called planar cinch buckle shape in which the tip is bent downward in a U-shape continuously from the locking step portion 9b, and a hook portion 9c that can be freely hooked is connected to the curved tip 8c. It forms a part.

In the embodiment of the present invention, only the cross chain 7 is made of boron steel, but if it is made entirely of boron steel, the durability will be further improved.

Since this embodiment adopts such a specification aspect, as shown in Fig. 2, the cross chain 7 is closed during installation and use.
The chain ring 7a at the end is locked to the locking stepped portion 9b by its tensile force, and the hook portion 9c of the locking rod 9 is bent back to the tip 8c.
If the chain ring 7a at the end of the cross chain 7 does not come off due to being pressed by the chain ring 7a, and if the cross chain 7 is broken or is badly worn and you want to replace it with a new one, loosen the cross chain 7 and remove it as shown in Figure 3. It can be easily removed by lifting the chain ring 7a and locking rod 9 at the end of the cross chain 7, pulling out the chain ring 7a from the hook part 9c, and pulling it out below the connector 8 [see FIG. 4].

In order to further connect a new cross chain 7 to the connector 8, the chain ring 7a at the end of the cross chain 7 is passed through from the bottom of the connector 8 and hooked to the hook part 9c of the locking rod 9, and then locked to the locking step part 9b. Then, due to the tensile force of the cross chain 7 and the weight of the locking rod 9, the hook portion 9c is firmly latched onto the warped tip 8c of the connector 8.

[Effects of the invention] In this way, the cross chain end is configured to be easily attached and detached by hand to the connector, which eliminates the need for conventional mechanical force, and allows for immediate replacement of old and new cross chains on site in the event of breakage during running. Since the chain can be replaced, it does not generate noise during subsequent driving and does not damage the mud on the tires, and at least the cross chain is made of hardened boron steel, so when compared to conventional models of the same standard, Approximately 300 km/h on a snowy expressway
It is capable of covering Km and is about three times more durable, demonstrating its excellent practicality and usefulness, making it indispensable for postal vehicles in winter in snowy regions.

[Brief explanation of the drawing]

Figure 1 is a partial configuration diagram showing an example of the present invention, Figure 2
The figures are an enlarged plan view showing the connection between the connector and the cross-chain end, Fig. 3 is an enlarged side view of the cross-chain end being removed from the connector, Fig. 4 is an enlarged bottom view of the cross-chain end removed from the connector, and Fig. 5 is an enlarged bottom view of the cross-chain end being removed from the connector. The figure is a partial configuration diagram showing a conventional tire chain. A, B... Tire chain, 1, 2... Parallel side chain, 1a, 2a, 3a, 7a... Chain ring, 3, 7... Cross chain, 4, 8... Connector, 4a, 4b, 8a, 8b... Parallel folding mounting part, 8c... Curved tip, 9... Locking rod, 9
a...Folding mounting part, 9b...Locking stepped part, 9c...
Futsuku department.

Claims (1)

[Claims for Utility Model Registration] 1. A connector in which the proximal end is rotatably attached to the chain ring of the side chain in order to span and connect cross chains at equal intervals between parallel side chains, wherein the cross chain is It is formed so that it can be inserted freely, and the tip is curved upward.
The tip of a locking rod whose proximal end is rotatably attached to the chain ring between the base ends is raised upward to form a locking step portion in which the chain ring at the end of the cross chain can be freely locked; Tire chain 2, characterized in that the end of the cross chain is made detachable by providing a hook part that can be freely latched to the tip of the warped part in succession to the locking stepped part.At least the cross chain is made of boron (boron). ) The tire chain according to claim 1, characterized in that it is made of steel.