JPH0867119A - Inner side connection fixture for tire non-slip device - Google Patents

Abstract

PURPOSE: To prevent the tire non-slip device from starting to race, and also from being one-sided by letting connection works be simply and surely carried out, and also letting no gap exist at the connecting section of the non-slip device in a state that connection is made in the connection fixture of an inner side squeezing cord which squeezes the inner side in the width direction of the non- slip device (the depth side of a tire house) in a ring shape when the non-slip device is mounted on a tire. CONSTITUTION: With respect to a connection fixture 5 installed at one end section of an inner side squeezing cord 3, a box shaped inner side connection fixture 1 in which the cord is installed, is installed at the other end section of the inner side squeezing cord 3. The inner side connection fixture 1 is provided with an elastic pawl capable of being engaged with the inserted connection fixture 5 within the box. The elastic pawl can be disengaged from the connection fixture 5 with a push-in operating piece 15 pushed in.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner connector used in a non-skid device for a tire such as a tire chain.

[0002]

2. Description of the Related Art There are various types of anti-skid devices for tires in which the main body has a ladder shape or a net shape, and there are various materials such as metal, resin and rubber. To install these anti-skid devices on a tire, wind the main body part around the tread surface of the tire, and then, first, hold the inner drawstring that is held alongside the widthwise inner end (the inner side of the tire house). Polygonal shape along the side surface of the tire by connecting both ends of the body to each other and hooking the tightening cords to the hook metal fittings which are attached to each other on the outer end in the width direction of the main body at predetermined intervals. Or, it is held in a circular shape, and by applying a tensile force in the axial direction to the tightening cord body, each hook fitting is narrowed down toward the rotation center of the tire.

By the way, the inner drawstring is connected at one end thereof with a connecting fitting made by bending a wire material into a J-shape, and at the other end thereof is provided a ring portion formed by folding back the cord itself. It has been customary to connect the inner drawstring body by engaging these connecting fittings with the ring portion.
On the other hand, recently, for the purpose of increasing the certainty of the connection state when traveling on rough roads or at high speeds, male and female couplings made of resin are formed on both ends of the inner drawstring body. A technique has been developed in which a tool and a tool are provided (for example, see Japanese Utility Model Laid-Open No. 6-27210).

[0004]

Originally, one of the meanings of connecting both ends of the inner drawstring body is to prevent a gap from being formed between the both ends in the longitudinal direction of the anti-skid device. Various roles are included. Therefore, when the male connector and the female connector are provided at both ends of the inner drawstring body as described above, each connector is attached to each end in the longitudinal direction of the anti-skid device as much as possible. It is necessary to bring them close and keep them connected.

However, since it is necessary to secure the insertion projection portion in the male connector and the projection socket portion in the female connector in the protruding state, the connection with the anti-skid device is performed at each of these portions. Could not be done. Therefore, some gap is inevitably formed between both ends in the longitudinal direction of the non-slip device mounted around the tire.

Therefore, when the anti-skid device receives a centrifugal force during high-speed running or slip, the above-mentioned gap may be enlarged, and the anti-skid device may slip or eccentric to the tire. Therefore, this may cause vibration, uneven wear of the anti-skid device, or damage to the vehicle body or the anti-skid device itself by the anti-skid device colliding with the vehicle body (tire house).

The present invention has been made in view of the above circumstances, and it is possible to reliably connect both ends of the inner drawstring body without creating a gap between both ends in the longitudinal direction of the anti-skid device. It is an object of the present invention to provide an inner connector of a tire antiskid device.

[0008]

In order to achieve the above object, the present invention takes the following technical means. That is, in the present invention according to claim 1, it is provided at one end of the inner drawstring body which is held alongside the inner end in the width direction of the anti-skid device for a tire, and is provided at the other end thereof. An inner connector that is detachable from a connector and is a main body connected to and held at one longitudinal end of a non-slip device, and an elastic tongue formed by cutting and raising a part of the main body. And a claw portion which is provided on the free end side of the elastic tongue and which is engageable with and disengageable from the coupling tool.

The main body portion, the elastic tongue piece, and the claw portion can be integrally formed of resin. The elastic tongue includes:
The pushing operation piece is extended in the direction opposite to the free end side with respect to the base of the cut and raised portion, and the direction in which the claw portion is pulled up when the pushing operation piece is pressed against the main body The elastic tongue can be bent.

On the other hand, the elastic tongue is provided with a pulling-up operation piece on the free end side, and when the pulling-up operation piece is separated from the main body portion, the elastic tongue is pulled up in the direction in which the claw portion is pulled up. It is also possible to have a configuration in which one piece can be bent. In the present invention according to claim 5, with respect to the inner drawstring body held alongside the inner end in the width direction of the anti-skid device for a tire, the insert provided at one end and the receiver provided at the other end thereof. And an insert member having a bulge engaging portion at a projecting end thereof, the inner connecting member including: The projection is provided, and the receiving tool does not pass through the insertion hole and the bulging engagement portion that can pass through the bulging engagement portion with respect to the insertion protrusion of the above-mentioned insertion tool, but can pass through the protruding neck portion And a receiving hole communicating with the engaging hole is provided, and in a state where the inserting projection of the inserting tool is fitted in the engaging hole of the receiving hole, the engaging hole is changed from the engaging hole to the inserting hole. It is characterized in that a lock device is provided which can prevent the movement of the device or can switch the movement of the device.

It is preferable that the insertion device has a position where it is connected and held with respect to the anti-skid device and an axial position of the insertion protrusion coincide with each other. The receptacle may be provided with a protection wall that surrounds the periphery of the receptacle when the insertion protrusion of the receptacle is fitted in the receiving hole. The locking device of the receiving device includes a contact piece that is biased and held in a closed state of the insertion hole when the insertion protrusion of the insertion tool is not fitted in the receiving hole, and the contact piece is forcibly removed from the insertion hole. And a release operation piece for separating the contact piece, and the contact piece closes the insertion hole when the insertion protrusion of the insertion tool moves to the engagement hole of the receiving hole, and The bulging engagement portion of the protrusion can be abutted from the side.

[0012]

The inner connector according to any one of claims 1 to 4 has a simple structure in which the elastic tongue is provided by cutting and raising a part of the main body, and the elastic tongue is provided with the claw. The inner connecting device is provided with a connecting device at the other end of the inner drawstring body, so that the inner connecting device is wound around the tire and then attached to the inner connecting device. When the and the connecting tool are connected to each other, the gap formed between the both ends in the longitudinal direction of the anti-skid device can be made minute or nonexistent.

The inner connector according to any one of claims 5 to 8 comprises an insert and a receiver, which are inserted into the insert projecting in a direction orthogonal to the tire side surface. It is disengaged by the protrusion. That is, since the engaging and disengaging directions of both are not along the longitudinal direction of the anti-skid device (the circumferential direction of the tire), the shape can be made compact in both cases. For this reason, when the anti-skid device is wound around the tire and then the insertion tool and the receiving tool are connected to each other, the gap formed between the both ends in the longitudinal direction of the anti-slip device can be made small or nonexistent.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an inner connecting member 1 of a first embodiment according to the present invention. This inner connecting member 1 is an end portion in the width direction of an anti-skid device 2 (on the upper side in FIG. 1). It is provided at one end (on the right side in FIG. 1) of the inner drawstring body 3 that is held alongside the inner side of the tire house.

Further, the inner connecting tool 1 is provided with a non-slip device 2
On the other hand, it is connected and held by the connecting fitting 4 at a position as close as possible to one end in the longitudinal direction. At the other end of the inner drawstring body 3, as in the conventional case, a connecting member 5 is formed by bending a wire material into a J shape to form a hook shape. A plurality of base sides are folded to form a connection portion between the body 3 and the antiskid device 2).

The inner drawstring body 3 is formed by knitting cotton, hemp or synthetic fiber, bundling or knitting metal wire (wire), resin wire or the like, or is formed by stretching a resin material or the like. The same can be used. Reference numeral 6 is a main body portion of the antiskid device 2 formed of rubber or the like, and 7 is a hook fitting for hooking and holding a tightening cord body (not shown) along the widthwise outer end of the antiskid device 2. is there.

The inner connector 1 includes a box-shaped main body 10 with the opening 10a oriented in the longitudinal extension direction of the anti-skid device 2.
An elastic tongue 11 is provided for the elastic tongue 1 and
1 is provided with a claw portion 12. These main body 1
0, the elastic tongue piece 11, and the claw portion 12 are integrally formed of a resin that can generate an elastic force in the elastic tongue piece 11.

The main body 10 is formed so that the hook-shaped portion of the connector 5 can be inserted into the box, and the opening 10a is gradually opened from the inside of the box toward the open end. The taper is provided so that the area is enlarged.
This facilitates insertion of the connector 5. The elastic tongue piece 11 is formed by cutting and raising a part of the circumferential wall surface 10b (upper side surface of FIG. 2) of the main body portion 10, and its free end 11a is directed toward the opening portion 10a side of the main body portion 10. It has become.

The claw portion 12 is a free end 11a of the elastic tongue piece 11.
From the main body 10 to the inside of the main body 10.
When the connector 5 is inserted therein, it easily engages with the connector 5, and thereafter, the engaged state can be maintained so that the connector 5 does not come out of the main body 10. The elastic tongue piece 11 is provided with a pushing operation piece 15 extending in a direction opposite to the free end 11a side with respect to the portion 11b which is the base of the cut and raised portion. Like the elastic tongue piece 11, the pushing operation piece 15 is also formed by cutting and raising a part of the circumferential wall surface 10b of the main body 10. At the free end 15a of the pushing operation piece 15, an operation bulge portion 15b protruding from the peripheral wall surface 10b is formed.

The pushing operation piece 15 and the elastic tongue piece 11 are made rigid by a reinforcing rib 16 provided from the operation bulge portion 15b to the free end 11a of the elastic tongue piece 11. Therefore, when the pushing operation piece 15 (the portion of the operation bulging portion 15b) is pressed against the main body portion 10, the elastic tongue piece 1 moves in the direction in which the claw portion 12 is pulled up.
It is possible to bend 1. That is, the engagement state between the claw portion 12 and the coupling tool 5 can be released by such an operation.

In the inner connecting tool 1 thus constructed, it is possible to connect the two by simply inserting the connecting fitting 5 into the main body portion 10, and the pushing operation piece 15 is pushed to separate them. Only by doing so, it becomes possible to release the connection between them. 3 and 4
Shows the inner connector 1 of the second embodiment according to the present invention. The most different point from the first embodiment is the elastic tongue piece 11
On the other hand, instead of the pushing operation piece 15, the pulling operation piece 1
8 is provided.

The pulling operation piece 18 is provided so as to extend the free end of the elastic tongue piece 11 (see reference numeral 11a in FIG. 2). Therefore, when the pull-up operation piece 18 is pulled up so as to be separated from the main body portion 10, the elastic tongue piece 11 can be bent in the direction in which the claw portion 12 is pulled up. In this embodiment, in order to prevent the root portion 11b of the elastic tongue piece 11 from being broken or lost due to stress concentration when the pulling operation piece 18 is pulled up, both sides of the root portion 11b are prevented. To
A notch 19 is provided so as to increase the widthwise dimension.

In the second embodiment, the other constructions and operations (excluding the difference in the direction in which the elastic tongue 11 is operated) are substantially the same as those in the first embodiment, and therefore exhibit the same operations as in the first embodiment. By giving the same reference numerals to the items, detailed description thereof will be omitted. 5 to 8 show an inner connector 30 of a third embodiment according to the present invention. This inner connector 30 is
The inner drawstring body 3 is provided with a plug 31 provided at one end and a receiver 32 provided at the other end.

As shown in FIG. 6B, the insert 31 is a metal fitting 38 having a pin portion 35 and large and small disc portions 36 and 37 provided at both ends of the pin portion 35. The inner squeeze cord body 3 is wound so that one end thereof is folded back. And in this winding state, the pin portion 3
An insertion protrusion 40 is formed by the portion where 5 is projected and the disc portion 37 having the smaller diameter. In addition, the disc portion 3 in this case
7 is a bulging engagement portion 41 positioned at the tip of the insertion projection 40.

The axis of the insertion projection 40 is the anti-slip device 2
Since it is held so as to be orthogonal to the plane direction of the anti-skid device (see FIG. 5), when the anti-skid device 2 is wound around the tire (not shown), the widthwise end of the anti-skid device 2 is As it is bent along the tire side (sidewall),
The insertion protrusion 40 is orthogonal to the tire side surface.

This fitting 31 is attached by the mounting bracket 45.
It is connected and held to one end of the anti-skid device 2, but this mounting member 45 is bent in a hook shape. Therefore, the position where the mounting member 45 is connected to the anti-skid device 2 and the axial center position of the insertion projection 40 can be matched (see FIG. 5). That is, the insertion tool 31 is positioned as close as possible to one longitudinal end of the anti-skid device 2.

As shown in FIGS. 6 and 7, the receiving member 32 comprises a box-shaped main body 46 capable of accommodating the inserting member 31. In consideration of weight reduction, it is preferable to form the whole body with resin. Reference numeral 47 is a fitting for connecting and holding the other end of the anti-skid device 2. Reference numeral 46b in FIG. 7 is a holding hole for the mounting bracket 47. The main body portion 46 is formed with an inner bottom portion 46a that divides it in the thickness direction, a receiving hole 48 is formed in the inner bottom portion 46a, and a locking device 50 is provided.

The receiving hole 48 can be passed through the bulging engagement portion 41 of the insertion protrusion 40 of the insertion tool 31, and the protruding neck portion (of the pin portion 35) that does not pass through the bulging engagement portion 41. The projecting portion (corresponding to the projecting portion) is communicated with the engaging hole 52 that allows passage. In the insertion protrusion 40, the length of the protruding neck portion (the protrusion length of the pin portion 35) is formed to be substantially equal to or slightly longer than the wall thickness of the insole portion 46a. When inserted into the hole 48, the bulging engagement portion 41 passes through the inner bottom portion 46a and projects to the back side thereof.

The body portion 46 is inserted into the receiving hole 48 and the insert 3
When the insertion protrusion 40 of No. 1 is inserted, this insertion tool 31
A protective wall surrounding it is configured (see FIG. 6B). That is, the tool 31 when the tire rotates, etc.
It is possible to prevent the detachment of the holder 32 from the holder 32 and the damage of the holder 31. The lock device 50 includes a shaft-shaped release operation piece 55 provided to penetrate through the insole portion 46a, and a flat plate-shaped contact provided on one end portion (lower side of FIG. 6B) of the release operation piece 55. And a piece 56.

In the release operation piece 55, an operation bulge portion 55a is provided at the end portion (upper side in FIG. 6B) opposite to the contact piece 56, and a spring stopper is provided at the central portion in the axial direction. A flange portion 55b for use is provided. And
A coil spring 58 is provided in a compressed state between the flange portion 55b and the inner bottom portion 46a of the main body portion 46. The coil spring 58 can be replaced with an appropriate elastic member such as a leaf spring or a rubber cylindrical material.

On the other hand, the contact piece 56 is one of the receiving holes 48.
It has a size and a positioning so that the insertion hole 51 can be closed. The contact piece 56 has a body portion 46 on both sides in the width direction.
The inner surface of the side wall 46c of the above is brought into contact with or abuts against the inner surface of the side wall 46c to be subjected to a detent action. Therefore, the release operation piece 55
When is not operated, the operation bulging portion 55a holds the protruding state, and the contact piece 56 closes the insertion hole 51 and contacts the middle bottom portion 46a which is the opening edge portion thereof. Further, by pressing the release operation piece 55 (operation bulging portion 55a), the contact piece 56 can be forcibly separated from the insole portion 46a, and the insertion hole 51 can be opened.

Of course, the projection 4 for inserting the insertion tool 31 into the receiving hole 48
When 0 is inserted, the contact piece 56 can be pushed open to open the insertion hole 51 without the need to operate the release operation piece 55. By the way, the operation stroke of the contact piece 56, that is, the holding interval between the flange portion 55b of the release operation piece 55 and the middle bottom portion 46a of the main body portion 46 is larger than the wall thickness dimension of the bulging engagement portion 41 of the insertion protrusion 40. It is getting bigger. Therefore, the tool 31
When the contact piece 56 is pushed open by the insertion protrusion 40, the insertion protrusion 40 inserts the bulging engagement portion 41 into the insertion hole 51.
It can be moved toward the engagement hole 52 while being inserted inside.

On the other hand, the contact piece 56 does not close the engagement hole 52, that is, remains open even when the insertion hole 51 is closed. Therefore, when the insertion projection 40 is once moved to the engagement hole 52 side as described above, the contact piece 56 returns to the closed state of the insertion hole 51 (that is, the non-operation point of the release operation piece 55). become.
At this time, the contact piece 56 is the bulging engagement portion 4 of the insertion protrusion 40.
Since it comes into contact with 1 from the side, the insertion protrusion 40 is not unless the release operation piece 55 is operated eagerly thereafter.
Moves to the insertion hole 51 side, that is, the insertion tool 3
The connection between 1 and the receiving device 32 is never disconnected.

As described above, the connection between the insertion tool 31 and the receiving tool 32 is performed by connecting the receiving tool 32 (reception hole 48) to the receiving tool 31.
This can be easily performed by fitting the (insertion protrusion 40), and the connection state can be released by releasing the lock device 50 (release operation piece 55) and the insert 31 (insertion protrusion 40).
It can be easily performed by the engagement releasing operation.

The bulging engagement portion 4 of the insertion tool 31
Reference numeral 1 denotes an inverted truncated cone shape or an inverted truncated pyramid shape as shown in FIG. 8A, a hemispherical shape as shown in FIG. 8B, or an inverted pyramidal shape (not shown). With such a configuration, the advantage that the receiving tool 32 can be easily inserted into the receiving hole 48 is obtained. In the present invention, the material, shape, and detailed configuration of each constituent member are not limited to the above-described embodiments, but can be changed as appropriate.

[0036]

According to the present invention as set forth in claims 1 to 4, a simple structure is provided in which an elastic tongue piece is provided by cutting and raising a part of a main body portion, and a claw portion is provided on the elastic tongue piece. Have,
It can be stored in a compact shape, and by installing a connecting tool at the other end of the inner drawstring body to this inner connecting tool, after attaching the anti-slip device to the tire by winding it, connect it with the inner connecting tool. When connected to the tool, the gap formed between the both ends in the longitudinal direction of the anti-skid device can be made minute or nonexistent.
Therefore, even when traveling at high speed or when slipping, it is possible to prevent slippage of the anti-skid device, eccentricity, etc., vibration, uneven wear of the anti-skid device, damage to the vehicle body (tire house) and the anti-skid device itself. Etc. can be prevented.

Moreover, since they can be easily connected to each other by simply inserting the connecting tool into the main body, they can be easily removed by simply operating the pushing operation piece or the pulling operation piece, which is excellent in handleability. ing. According to the present invention according to claim 5 to claim 8, the present invention is provided with an insertion tool and a receiving tool, but these are provided by an insertion projection of the insertion tool projecting in a direction orthogonal to the tire side surface. It will be disengaged. That is, since the engaging and disengaging directions of both are not along the longitudinal direction of the anti-skid device (the circumferential direction of the tire), the shape can be made compact in both cases.

In particular, in the case of the insertion device, when the portion connected to and held by the anti-skid device and the axis of the insertion projection are aligned, the position of the insertion device is set at one longitudinal end of the anti-skid device. It is possible to bring them as close as possible. For this reason, when the anti-skid device is wound around the tire and then the connecting tool and the receiving tool are connected,
It is possible to make a minute gap or no gap between the both ends of the anti-skid device in the longitudinal direction. Therefore, even when traveling at high speed or when slipping, it is possible to prevent slippage of the anti-skid device, eccentricity, etc., vibration, uneven wear of the anti-skid device, damage to the vehicle body (tire house) and the anti-skid device itself. Etc. can be prevented.

Moreover, the fittings can be easily connected to each other only by fitting them into the receiving tool, and the fittings and the receiving tool can be removed by operating the locking device (release operation piece). It is easy to handle and has excellent handleability. In addition, in the insertion tool, when the portion connected and held to the anti-skid device and the axis of the insertion protrusion are aligned,
In the connection state of the tool and the receiver, the sway acting between them (the sway in the tire radial direction due to the centrifugal force generated when the tire rotates) is absorbed around the insertion protrusion of the tool. Become. Therefore, there is an advantage that excessive stress is not concentrated on the insertion tool and the receiving tool, damage to them and uneven wear of the anti-skid device can be prevented, and lifting of the anti-skid device can be suppressed.

[Brief description of drawings]

FIG. 1 is an intermediate omitted plan view of an anti-skid device including an inner connector (first embodiment) according to the present invention.

FIG. 2 is a partially crushed perspective view showing an enlarged inside connector of FIG. 1 (first embodiment).

FIG. 3 is a plan view of a non-slip intermediate device including an inner connector (second embodiment) according to the present invention.

FIG. 4 is a partially crushed perspective view showing an enlarged inside connector of FIG. 3 (second embodiment).

FIG. 5 is a plan view of a non-slip intermediate device including an inner connector (third embodiment) according to the present invention.

6A and 6B are enlarged views of the inner connector of FIG. 5 (third embodiment), in which (a) is a plan view and (b) is a side sectional view.

FIG. 7 is a perspective view of a receiver.

FIG. 8 is a side view showing another embodiment of the insertion tool.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inner connection tool (corresponding to claims 1 to 4) 2 Non-slip device 3 Inner drawstring body 5 Connection tool 10 Main body section 11 Elastic tongue piece 11a Free end 11b Root portion 12 Claw section 15 Push-in operation piece 18 Pull-up operation Piece 30 Inner connection tool (corresponding to claims 5 to 8) 31 Insert tool 32 Receiving tool 40 Inserting projection 41 Bulging engagement section 46 Main body section (constituting protective wall) 48 Receiving hole 50 Lock device 51 Insert Hole 52 Engagement hole 55 Release operation piece 56 Per piece

Claims (8)

[Claims] 1. An anti-skid device (2) for a tire, which is provided at one end of an inner drawstring body (3) which is held laterally at the inner end in the width direction thereof, and at the other end thereof. An inner connector (1) detachably engageable with a connecting fitting (5), the main body part (10) connected and held to one longitudinal end of the anti-skid device (2), and the main body part (10). ) Is formed by cutting and raising a part of the elastic tongue (11), and the elastic tongue (11) is provided on the free end (11a) side and can be engaged / disengaged with the connector (5). An inner coupling tool for a tire anti-skid device, comprising: 2. The body (10), elastic tongue (1)
The inner coupling tool for a tire anti-skid device according to claim 1, wherein 1) and the claw portion (12) are integrally formed of resin. 3. The elastic tongue piece (11) is provided with a pushing operation piece (15) extending in a direction opposite to the free end (11a) side with respect to the base portion (11b) of the cut and raised portion. It is possible to bend the elastic tongue (11) in the direction in which the claw (12) is pulled up when the pushing operation piece (15) is pressed against the main body (10). The inner connector of the anti-skid device for tires according to claim 1 or 2. 4. The elastic tongue (11) has a free end (1).
A pull-up operation piece (18) is provided on the side of 1a), and when the pull-up operation piece (18) is separated from the main body portion (10), the elastic tongue piece is pulled in a direction in which the claw portion (12) is pulled up. The inner connector of the anti-skid device for tire according to claim 1 or 2, wherein (11) can be bent. 5. An insert (31) provided at one end of an inner drawstring body (3) held alongside the widthwise inner end of a tire anti-skid device (2) and the other end thereof. An inner connector (30) that includes a receiving member (32) provided on the inner surface and can be engaged with and disengaged from each other, wherein the insertion member (31) projects in a direction that can be orthogonal to a tire side surface. An insertion protrusion (40) having a bulging engagement portion (41) is provided at the projecting end portion thereof, and the receiving member (32) is provided with the insertion protrusion (40) of the insertion device (31). In contrast, the insertion hole (51) that can pass through the bulging engagement portion (41) and the engagement hole (52) that does not pass through the bulging engagement portion (41) but allows the protruding neck portion to pass through are in communication. The receiving hole (48) is provided, and the insertion protrusion (40) of the insertion tool (31) is fitted into the engaging hole (52) of the receiving hole (48). A locking device (50) capable of preventing movement of the insertion tool (31) from the engagement hole (52) to the insertion hole (51) or movably switching the insertion tool (51) in a closed state is provided. Inner coupling of anti-skid device for tire. 6. The insert (31) has a position where it is connected and held to the anti-skid device (2) and an insertion protrusion (40).
The inner connecting member of the anti-skid device for a tire according to claim 5, wherein the axial center position of the inner connecting member is the same. 7. The receiving hole (48) is formed in the receiving member (32).
The protective wall is provided so as to surround the periphery of the insertion tool (31) when the insertion protrusion (40) of the insertion tool (31) is fitted to the protection wall. Inner coupling of anti-skid device for tires. 8. A locking device (5) for the receiver (32).
0) is a projection (4) for inserting the fitting (31) into the receiving hole (48).
0) when the insertion hole (51) is not fitted, the contact piece (56) that is urged and held in the closed state, and the release that forcibly separates the contact piece (56) from the insertion hole (51). And the operating piece (55), and the contact piece (5
6) is inserted into the engaging hole (52) of the receiving hole (48) (3).
When the insertion protrusion (40) of 1) is in a moved state, the insertion hole (51) is closed and the insertion protrusion (40) is closed.
The inner coupling device for a tire anti-skid device according to claim 5, wherein the bulging engagement part (41) can be abutted from the side thereof.