JPH0518161Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a metal tire chain that is attached to a tire to prevent the tire from slipping when an automobile runs on a road covered with snow or ice.

[Conventional technology]

Conventionally, this type of tire chain is made of a substantially C-shaped spring steel material, and includes an inner tire member having spring properties, and a plurality of cross chains connected at one end substantially perpendicular to the inner member. and an outer chain of a tire connected to the other end of the cross chain.

[The problem that the idea attempts to solve]

However, in order to attach the conventional tire chain to the tire, it is necessary to connect the connecting metal fittings that are fixed to both ends of the opening of the inner member that cannot be seen from the outside of the tire. By inserting the tire chain into the tire, the tire chain can be directly moved and operated without the naked eye, and the connecting fittings attached to both ends of the opening of the inner member can be connected to each other. was.

Therefore, when connecting the connecting fittings provided at both ends of the opening of the inner member in cold regions etc. without being able to confirm the attachment position of the tire chain to the tire from the outside, it is difficult to move the connecting fittings, for example, in places that are easily bent and difficult to move. The connecting fittings attached to both ends of the opening of the inner member may become entangled with the cross chain located above, or the inner member may be twisted and the attachment positions of the connecting fittings may not match each other, or even cross Since the attachment position of the chain to the tire cannot be positioned at a predetermined set position, there is a problem in that the connecting operation to connect the connecting fittings to each other is very troublesome and takes a long time.

Therefore, this idea was developed to provide a cross section located at the upper level of the opening, which is a part that is easy to bend and difficult to move with respect to the inner member that attaches the male or female locking metal fitting as the connecting metal fitting to the connecting end. There is no inconvenience such as the chains becoming entangled or the inner member being twisted, and even if the cross chain becomes entangled with the male or female locking fitting, it can be easily released. It is an object of the present invention to provide a tire chain that easily and reliably connects metal fittings to each other.

[Means to solve the problem]

This invention consists of a substantially C-shaped inner member having spring properties, a plurality of cross chains that connect an outer chain and the inner member, and a pair of cross chains that are connectably fixed to both ends of the opening of the inner member. a tire chain consisting of a connecting metal fitting, which extends from both ends of the opening of the inner member near the inner member substantially in parallel to the plurality of stages of the cross chain than the length corresponding to the plurality of stages of the cross chain; A method was adopted in which a flexible holding rod was attached within the range where the length was longer.

[Effect]

Flexible material near the inner member within a range where the length of the cross chain is longer than the length corresponding to the plurality of steps of the cross chain, extending from both ends of the opening of the inner member having spring properties to multiple stages of the cross chain. Since the holding rod is installed, it is easy to bend and difficult to move, so in order to connect the pair of connecting metal fittings provided at both ends of the opening of the inner member, it is necessary to insert your arm into the fender of the car. Even when the holding rod is not visible, the holding rod provides support, making it easy to handle the area near the opening, which is a place that is easy to bend and difficult to move. Even if they get tangled, they can be easily unraveled, and twists in the inner members can be seen at a glance.

〔Example〕

Hereinafter, details of an embodiment of this invention will be described with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes an inner member, and the inner member 1 is formed of a substantially C-shaped spring steel member 1b that is covered with a sleeve 1a. Both ends of an opening K of the spring steel member 1b are By overlapping and attaching the attachment members 1c, the male locking metal fitting 2 and the female locking metal fitting 3 are separately attached.

Reference numeral 4 designates a cross chain in which a plurality of cross chains are connected between the inner member 1 and the outer chain 5 via connector metal fittings 4a in a substantially crossed state.

As shown in the plan view of FIG. 3A and the cross-sectional view of FIG. A pair of holes 2a are provided, and
The other end has a locking protrusion 2b bent inward into a U-shape.
is formed.

Further, as shown in the plan view of FIG. 4A and the cross-sectional view of FIG. A pair of holes 3a are provided to sandwich the other of the steel materials 1b, and a locking hole 3b into which the locking protrusion 2b engages and disengages is provided.

6 is the male locking metal fitting 2 as a connecting metal fitting;
the inner member 1 to which the female locking fitting 3 is attached;
A plurality of the cross chains 4 are located inside the inner member 1 in parallel with the inner member 1 from the end of the opening K to the upper part thereof, at both ends of the opening K, which is a part that is easy to bend and difficult to move. This is a holding rod that is attached in stages, and this holding rod 6 is made of steel, plastic, or the like so as to be rigid and flexible.

For example, as shown in the figure, the holding rod 6 is attached to the spring steel member 1 of the cross chain 4 extending from the opening K to a plurality of stages, for example, from 1 stage to 3 stages.
They are inserted into the first chain closest to b, respectively, and are attached so as to prevent them from coming off by protrusions 6a, 6a protruding from the upper and lower ends in the axial direction.

The length of the holding rod 6 is 185/70・R14 or 215/
Depending on the tire size such as 65/R15, the circumferential length l of each inner member 1 corresponding to cross chains 4, 4, 4 from 1st stage to 3rd stage, for example.
The length L of the cross chain 4 is formed to be longer than +m+n.

The cross chain 4 provided on both sides of the opening K is a part that is easily bent and difficult to move.
By attaching the holding rods 6, 6 substantially in parallel across multiple stages, rigidity is exerted on both sides of the opening K, which is a part that is easy to bend and difficult to move, and the other parts of the inner member 1 are made of spring steel 1b. Since the inner member 1 bends from the opening K and crosses over the cross chains 4 from the first to third stages and becomes entangled, the cross chain 4 conversely bends from the opening K and crosses the male locking metal fittings 2. or female locking metal fitting 3
This prevents the inner member 1 from becoming entangled with the inner member 1 and further from twisting the inner member 1 itself.

The outer chains 5 can be connected by various means, such as hooking a hook 7 attached to the end of one chain to the other chain, as shown in FIG. The band is hooked in the same manner as before.

Since one embodiment of this invention is constructed as described above, the chain is attached to the tire as follows.

(a) When the substantially C-shaped spring steel member 1b of the inner member 1 is elastically expanded and the chain is placed over the tire from the outside of the tire and released when the inner member 1 is located inside the tire, the inner member 1 is spring steel material 1b
It returns to its original shape due to its elastic restoring force.

(b) Next, the inner member 1 is compressed from the outside of the tire, and the locking protrusion 2b of the male locking metal fitting 2 is locked in the locking hole 3b of the female locking metal fitting 3.

At this time, from both ends of the opening K of the approximately C-shaped inner member 1, a desired plurality of stages of the cross chain 4, for example, from 1 to 3 stages, is extended approximately parallel to the inner member 1, and has rigidity. The inner member 1, to which the flexible holding rod 6 is attached and the male locking fitting 2 and female locking fitting 3 are attached, has an opening K that is easily bent and difficult to move. This prevents unnecessary bending at both ends.

Therefore, when connecting the male locking metal fitting 2 and the female locking metal fitting 3 as connecting metal fittings, the inner member 1 bends at the opening K, which is a place where it is easy to bend and difficult to move. There are cases where the cross chain 4 crosses up to about three stages and becomes entangled, the cross chain 4 becomes entangled with the male locking metal fitting 2 or the female locking metal fitting 3, and even the inner member 1 itself is twisted. is prevented.

Also, from both ends of the opening K, the holding rods 6, 6 are not attached except for the multiple stages of the cross chain 4, and the spring steel material 1 is removed from both ends of the opening K.
Since the degree of freedom b is exhibited, a desired plurality of stages can be formed from the male locking metal fittings 2 and/or female locking metal fittings 3 provided at both ends of the opening K of the inner member 1 and the opening K that is easily entangled. For example, even if the first to third cross chains 4 become entangled with each other, the entanglement can be released.

This allows the male locking metal fitting 2 to be connected to the female locking metal fitting 3.
Can be easily and reliably locked and connected. This also means, for example, 185/70・R14 or 215/65・
Cross chains 4, 4, 4 from the opening K to the 1st to 3rd stage according to the size of the R15 tire.
Each length l+m+n of the inner member 1 for
When the length L of the cross chain is longer than the length L of the cross chain, the degree of freedom of the cross chain 4 in the width direction of the tire can be ensured sufficiently with respect to the pushing movement of the inner member 1 in the circumferential direction. The cross chain 4 in the vicinity of the opening K and the male locking fitting 2 can be easily corrected in the chain mounting position.
Entanglement with the female locking metal fitting 3 can be more efficiently prevented, and even if entanglement occurs, it can be easily released.

[Effect of idea]

As described above, this invention extends from both ends of the opening of the approximately C-shaped inner member, which is a part that is easy to bend and difficult to move, to multiple stages of the cross chain, and the length of the cross chain is longer than the length corresponding to the multiple stages. Because the flexible retaining rod is attached near the inner member in the longer range, there is no possibility that the upper cross chain may become entangled with the male locking metal fitting or the female locking metal fitting, or the inner member may become twisted. Moreover, even if the cross chain becomes entangled with the male or female locking metal fittings, it can be easily released, making it easier and more reliable to connect the connecting metal fittings to each other. Become.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of this invention, Fig. 2 is a perspective view showing the main parts, Fig. 3 shows a male locking fitting constituting this embodiment, and Fig. A is a plan view. ,
Figure B shows a cross-sectional view, and Figure 4 shows a male locking fitting.
Figure A is a plan view, Figure B is a sectional view, Figure 5 is a front view showing the inside of the tire to which the tire chain is attached, and Figure 6 is a front view showing the outside of the tire. 1...Inner member, 2...Male locking fitting, 3...
Female locking metal fitting, 4...Cross chain, 5...Outside chain, 6...Holding rod, K...Opening.

Claims (1)

[Scope of utility model registration request] an inner member having a substantially C-shape and having spring properties; an outer chain; a plurality of cross chains connecting the outer chain and the inner member; and a pair of cross chains connected to each other at both ends of the opening of the inner member. a tire chain consisting of a connecting fitting of the inner member, extending approximately parallel to the inner member from both ends of the opening of the inner member to the plurality of stages of the cross chain, and having a cross length longer than the length corresponding to the plurality of stages of the cross chain. A tire chain characterized in that a flexible holding rod is attached within a longer range of the chain.