JP2011189773A - Antiskid device for tire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify connecting and separating work of antiskid bodies, and to simplify structure. <P>SOLUTION: In this antiskid device, the antiskid bodies connected by being fitted into a tire of an automobile and being arrayed over the entire periphery are mounted with connecting members 11 and 12 on a front side and a rear side in outside parts, and a connecting tool for connecting the connecting members 11 and 12 on the front side and the rear side is provided. In the connecting tool, a cylindrical member 27 is provided in either one of a planar link 26 of the connecting member 11 on the front side and a planar link 36 of the connecting member 12 on the rear side, a shaft-like member 30 crossing and penetrating through the cylindrical member 27 is provided, the shaft-like member 30 is made movable forward and backward in an axial center direction, an elastic member 31 is provided to impart advancing force to the shaft-like member 30, and the other planar link is provided with connecting holes 37 and 38. During the connection, the shaft-like member 30 is retreated, the planar link with a connecting hole is inserted into the cylindrical member 27, and the shaft-like member 30 is advanced by elastic force of the elastic member 31 and is penetrated through the connecting hole of the planar link. During the separation, the shaft-like member 30 is retreated and is extracted from the connecting hole of the planar link, and the planar link with the connecting hole is extracted from the cylindrical member 27. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an anti-slip device mounted on a tire of an automobile.

  The anti-slip device exemplified in the patent literature is fitted with an anti-slip body having a U-shaped cross section from the outer periphery side of an automobile tire. Several anti-slip bodies are arranged at almost equal intervals on the entire circumference of the tire, and the adjacent ones are connected. Several anti-slip bodies are fitted into the outer periphery of the tire in a ring and attached to the tire. When the anti-slip device is removed from the tire, the anti-slip bodies are separated from each other and the anti-slip body is removed from the tire.

  The anti-slip body having a U-shaped cross section includes a front U-shaped member and a rear U-shaped member in the tire rotation direction when the vehicle is moving forward, and an inner linear member along the inner surface of the tire. The U-shaped members on the front side and the rear side have a crossing portion that crosses the ground contact surface of the tire, an outer portion that extends along the outer surface of the tire, and an inner portion that extends along the inner surface of the tire. The inner linear member connects the inner portions of the front U-shaped member and the rear U-shaped member.

  The outer part of the anti-slip body has connecting members attached to the front end and the rear end in the circumferential direction of the tire. The connecting member is chained and attached with a connecting tool. When connecting the anti-slip bodies arranged in the circumferential direction of the tire, the connecting member on the rear side of the anti-slip body is connected to the connecting member on the front side of the rear non-slip body in a separable manner.

Japanese Patent No. 3557464 Japanese Patent No. 37187979 JP 2007-290627 A

[Task]
The anti-slip device for a tire as described above is easy to connect the connecting members of the front-side connecting member and the rear-side connecting member of the anti-slip body when connecting the anti-slip bodies arranged in the circumferential direction of the tire. It is desirable to be. It is desirable that the operation of separating the connecting member of the front connecting member and the rear connecting member is also simple. Further, it is desirable that the connector has a simple structure.

  Furthermore, the outer diameter of an automobile tire is reduced due to wear of the ground contact surface. Replacing with a new one increases the outer diameter. It is desired that the tire anti-slip device can be used even if the outer diameter of the tire changes.

[Idea]
1. The coupler is a plug-in type.
The front connecting member and the rear connecting member are a chain in which a plurality of links are rotatably connected by pins. The link at the front end of the front connection member and the link at the rear end of the rear connection member are plate-like links.

  The insertion-type connector connects the plate-like link at the front end of the front-side connecting member and the plate-like link at the rear end of the rear-side connecting member. One plate-like link is provided with a cylindrical member into which the other plate-like link is inserted. The cylindrical member is provided with a shaft-shaped member that passes through the cylindrical member. The shaft-like member is movable back and forth in the axial direction. An elastic member for applying a forward force to the shaft member is provided. The other plate-like link is provided with a connecting hole through which the shaft-like member passes.

At the time of connection, the shaft-like member is retracted against the elastic member, and a plate-like link with a connection hole is inserted into the cylindrical member. The shaft-like member is advanced by the elastic force of the elastic member and penetrates the connecting hole of the plate-like link with the connecting hole. Then, a plate-shaped link with a cylindrical member and a plate-shaped link with a connection hole connect.
At the time of separation, the shaft-like member is retracted against the elastic member and is extracted from the connecting hole of the plate-like link with the connecting hole. The plate-like link with the connecting hole is extracted from the cylindrical member. The plate-like link with the cylindrical member and the plate-like link with the connecting hole are separated.

2. The connector is configured so as not to be separated unexpectedly while the automobile is running.
The coupler is located outside the tire, and receives a centrifugal force in the radial direction of the tire by the rotation of the tire due to running of the automobile. When this centrifugal force acts on the shaft-like member in its retreating direction, the shaft-like member may retreat against the elastic member. When the shaft-like member moves backward due to the centrifugal force caused by the rotation of the tire, the plate-like link with the cylindrical member and the plate-like link with the connecting hole are separated.

  Therefore, the shaft-like member does not have the axial direction and the longitudinal movement direction as the tire radial direction and the centrifugal force direction but the tire axial direction. Further, the front connecting member and the rear connecting member are configured so as not to be twisted so that the shaft-shaped member is maintained in the axial direction of the tire. Then, during driving | running | working of a motor vehicle, a shaft-shaped member does not receive the centrifugal force by rotation of a tire in the axial direction.

3. The coupling tool further simplifies the coupling operation.
The shaft-like member is provided with a receding drive surface having a slope inclined with respect to the axial direction at the front end. When the plate-like link with the connecting hole is inserted into the cylindrical member, the front end abuts against the receding driving surface of the front end of the shaft-shaped member, and the shaft-shaped member is retreated against the elastic member. Next, insertion of the plate-like link with the connecting hole proceeds in a state where the front end of the shaft-like member is pressed against the plate surface by the elastic force of the elastic member. When the connecting hole of the plate-like link reaches the front end position of the shaft-like member, the shaft-like member advances by the elastic force of the elastic member and penetrates the connecting hole. The plate-like link with the connecting hole is connected to the plate-like link with the cylindrical member only by inserting operation.

4). The coupling tool allows the coupling length to be adjusted.
The plate-like link with the connecting hole is arranged along the connecting direction with a plurality of connecting holes. The connecting length of the front connecting member and the rear connecting member can be adjusted. Adjust the distance between adjacent anti-slip bodies.
The connection hole of the plate-like link with the connection hole penetrating the shaft-like member is selected in accordance with the outer diameter or the outer peripheral length of the tire.

1. Several anti-slip bodies having a U-shaped cross section are fitted into a tire of an automobile and arranged at almost equal intervals on the entire circumference of the tire, and the outer portion of each anti-slip member is connected to the outer portion of the adjacent anti-slip member. In the configuration,
The anti-slip body includes a U-shaped member on the front side and a U-shaped member on the rear side in the tire rotation direction when the vehicle moves forward, and an inner linear member along the inner side surface of the tire,
The U-shaped member on the front side and the U-shaped member on the rear side have a transverse part that crosses the ground contact surface of the tire, an outer part that follows the outer surface of the tire, and an inner part that follows the inner surface of the tire, Connected by a linear member of
The outer part of the anti-slip body has front and rear connecting members attached to the front and rear ends in the circumferential direction of the tire, respectively. In the anti-slip device configured to be detachably connected to the connecting member on the front side of the anti-slip body with a connector,
Each of the front connecting member and the rear connecting member is a chain in which a plurality of links are rotatably connected with pins, and the front end link of the front connecting member and the rear end link of the rear connecting member are respectively Into a plate link,
The connector is configured to connect a plate-like link at the front end of the front-side connecting member and a plate-like link at the rear end of the rear-side connecting member, and a cylindrical shape in which the other plate-like link is inserted into one plate-like link. A member is provided, and a tubular member is provided with a shaft-like member penetrating through the tubular member. The shaft-like member is movable back and forth in the axial direction, and provided with an elastic member for applying a forward force to the shaft-like member. The plate-like link is provided with a connecting hole through which the shaft-like member passes,
When connecting the plate-like link with the cylindrical member and the plate-like link with the connecting hole, the shaft-like member is retracted against the elastic member, the plate-like link with the connecting hole is inserted into the cylindrical member, and the shaft-like member is elastic. It is advanced by the elastic force of the member, and is configured to penetrate the connecting hole of the plate-like link with the connecting hole,
When the plate-like link with the cylindrical member and the plate-like link with the connecting hole are separated, the shaft-like member is retracted against the elastic member and is extracted from the connecting hole of the plate-like link with the connecting hole, and the plate-like link with the connecting hole Is an anti-slip device for a tire characterized by being configured to be extracted from a cylindrical member.
2. In the tire anti-slip device,
The axial member has its axial direction as the tire axial direction, and the connecting hole has its central axial direction as the tire axial direction,
The front connecting member and the rear connecting member are configured so as not to be twisted, and the shaft-shaped member is maintained in the axial direction of the tire.
3. In the tire anti-slip device,
The shaft-like member is provided with a receding drive surface having a slope inclined with respect to the axial direction at the front end,
When the plate-like link with the connecting hole is inserted into the cylindrical member, the shaft-like member is moved back against the elastic member against the backward drive surface of the front end of the shaft-like member, and the front end of the shaft-like member is elastic of the elastic member. Insertion progresses while being pressed against the plate surface by force, and when the connecting hole reaches the front end position of the shaft-shaped member, the shaft-shaped member advances by the elastic force of the elastic member and penetrates the connecting hole. It is characterized by.
4). In the tire anti-slip device,
The plate-like link with connection holes is characterized in that a plurality of connection holes are provided and a plurality of connection holes are arranged along the connection direction so that the connection lengths of the front connection member and the rear connection member can be adjusted. To do.

  The anti-slip device for a tire makes it easy to connect and separate anti-slip bodies arranged in the circumferential direction of the tire. Further, the structure of the connector does not become complicated. Furthermore, even if the outer diameter of the tire changes, it can be used.

The front view of the tire mounting state of the anti-slip | skid apparatus in the 1st example of embodiment of this invention. The enlarged front view of the 1st non-slip body in FIG. The enlarged plan view of the 1st non-slip body. FIG. 3 is an enlarged sectional view taken along line AA in FIG. 2. The enlarged front view of the connection part of the 2nd non-slip body in FIG. The enlarged plan view of the connection part of the 2nd anti-slip body and the 3rd anti-slip body. FIG. 6 is an enlarged cross-sectional view taken along line BB in FIG. 5. FIG. 6 is an enlarged cross-sectional view taken along the line CC in FIG. 5. It is a figure which shows the isolation | separation state of the connection tool of the connection part, and the retreat state of a shaft-shaped member, and sectional drawing similar to FIG. It is a figure which shows the isolation | separation state of the connection tool, and the retreat state of a shaft-shaped member, and is sectional drawing similar to FIG. It is a figure of the connection part of the anti-slip | skid body of the anti-slip | skid apparatus in the 2nd example of embodiment, and is sectional drawing similar to FIG. It is a figure which shows the isolation | separation state of the connector of the connection part, and is sectional drawing similar to FIG.

[First example (see FIGS. 1 to 10)]
The anti-slip device for a tire of this example is shown in FIG. 1 as viewed from the outside of the automobile when it is mounted on a tire T of the automobile. This anti-slip device connects the first, second, and third anti-slip bodies 1a, 1b, and 1c at equal intervals in the circumferential direction of the tire T. The three anti-slip bodies 1a to 1c and 1 have the same structure. The first anti-slip body 1a will be described.

  The first anti-slip bodies 1 and 1a are shown in an enlarged view in FIGS. FIG. 2 is a front view from the outside of the automobile. FIG. 3 is a plan view seen from above. 4 is an enlarged cross-sectional view taken along line AA in FIG.

  The first anti-slip body 1, 1 a includes a front U-shaped member 2, a rear U-shaped member 3, and a linear member 4 inside the automobile. Here, the front side is the front side in the forward rotation direction of the tire T when the vehicle advances as indicated by an arrow in FIG. 1, and the left side of FIGS. The rear side is the rear side in the normal rotation direction of the tire T, and the right side in FIGS. 1, 2, and 3.

  The U-shaped members 2 and 3 on the front side and the rear side have a symmetrical structure and are curved into a U shape that fits a round steel bar to the outer peripheral side of the tire T. The U-shaped members 2 and 3 have transverse portions 2a and 3a that traverse the ground contact surface of the tire T, outer portions 2b and 3b that extend along the outer surface of the tire T, and inner portions 2c and 3c that extend along the inner surface of the tire T. ing. The U-shaped members 2 and 3 on the front side and the rear side are fitted to the tire T with a central angle of about 60 degrees.

  The front U-shaped member 2 has an outer portion 2b arranged in the radial direction of the tire T, and an end portion of the outer portion 2b is bent forward and arranged in the circumferential direction of the tire T. In addition, the front U-shaped member 2 has an inner portion 2c arranged in the radial direction of the tire T, and an end portion of the inner portion 2c is bent rearward and arranged in the circumferential direction of the tire T. The rear U-shaped member 3 has an outer portion 3b arranged in the radial direction of the tire T, and an end portion of the outer portion 3b is bent rearward and arranged in the circumferential direction of the tire T. Further, the rear U-shaped member 3 has an inner portion 3 c arranged in the radial direction of the tire T, and an end portion of the inner portion 3 c is bent forward and arranged in the circumferential direction of the tire T.

  The inner linear member 4 is chained. The chain 4 is formed in a string by connecting a plurality of plate-like links rotatably with pins. The leaf chain.

  The inner linear member 4 has a front end attached to the end of the inner portion 2 c of the front U-shaped member 2 by a shaft 6. As shown in FIGS. 3 and 4, the inner portion 2 c of the U-shaped member 2 on the front side forms a groove at the end, and penetrates through the screw hole crossing the groove in the axial direction of the tire T. The inner linear member 4 penetrates the flaw hole in the axial direction of the tire T at the front end. The front end of the inner linear member 4 is inserted into the groove at the end of the inner portion 2 c of the front U-shaped member 2. The shaft 6 penetrates the screw shaft portion by screwing into the screw hole of the inner portion 2c of the U-shaped member 2 on the front side, and also passes through the flaw hole at the front end of the inner linear member 4. That is, the end of the inner portion 2c of the U-shaped member 2 on the front side and the front end of the inner linear member 4 are coupled rotatably through the shaft 6 in the axial direction of the tire T. An inner contact member 7 is fixed to the head of the inner end of the shaft 6. The inner abutting member 7 is formed in a disk shape and is disposed at a position where it hits the inner surface of the tire T. A split pin is attached to the outer end of the shaft 6 by screwing a lock nut 8.

  The inner linear member 4 has a rear end attached to the end of the inner portion 3c of the rear U-shaped member 3 by a shaft 6 in the same manner as the front end. The end of the inner portion 3c of the rear U-shaped member 3 and the rear end of the inner linear member 4 are coupled rotatably through the shaft 6 in the axial direction of the tire T. The shaft 6 has an inner contact member 7 fixed to the head at the inner end, and a lock nut 8 is screwed to the outer end to attach a split pin.

  The outer portion 2b of the front U-shaped member 2 has a front connecting member 11 attached to the front end. The outer portion 3b of the rear U-shaped member 3 has a rear connecting member 12 attached to the rear end. The front and rear connecting members 11 and 12 are chained. The front connection member 11 is provided with a cylindrical connector 21 at the front end. The rear connecting member 12 is provided with a plate-like connector 22 at the rear end. The tubular connector 21 and the plate connector 22 are connectable and separable.

The chains of the connecting members 11 and 12 on the front side and the rear side each form a leaf chain in which a plurality of plate links are rotatably connected around the pins with pins along the axial direction of the tire T.
The front connecting member 11 and the rear connecting member 12 are attached to the outer side 2b of the front U-shaped member 2 and the outer side 3b of the rear U-shaped member 3, respectively, along the axial direction of the tire T. A shaft 6 is used and is rotatable around the shaft 6.

  The attachment structure of the front connecting member 11 is the same as the attachment structure of the inner linear member 4. More specifically, the outer portion 2b of the front U-shaped member 2 forms a groove that penetrates in the radial direction of the tire T at the end, and penetrates a screw hole that crosses the groove in the axial direction of the tire T. The front side connecting member 11 penetrates the hole in the plate-like link at the rear end in the axial direction of the tire T. The plate-like link at the rear end of the front connecting member 11 is inserted into the groove at the end of the outer portion 2 b of the front U-shaped member 2. The shaft 6 penetrates the screw shaft portion through the screw hole of the outer portion 2b of the U-shaped member 2 on the front side, and also passes through the flaw hole of the plate-like link at the rear end of the connecting member 11 on the front side. Yes. That is, the end of the outer portion 2 b of the U-shaped member 2 on the front side and the rear end of the connecting member 11 on the front side are coupled through the shaft 6 in the axial direction of the tire T. An outer contact member 16 is fixed to the head of the inner end of the shaft 6. The outer abutting member 16 is formed in a disk shape and is disposed at a position where it hits the outer surface of the tire T. A split pin is attached to the outer end of the shaft 6 by screwing a lock nut 8.

  The attachment structure of the rear connecting member 12 is the same as the attachment structure of the inner linear member 4. More specifically, the outer portion 3b of the U-shaped member 3 on the rear side forms a groove penetrating in the radial direction of the tire T at the end, and penetrates a screw hole crossing the groove in the axial direction of the tire T. . The connecting member 12 on the rear side penetrates the hole in the plate-like link at the front end in the axial direction of the tire T. The plate-like link at the front end of the rear connection member 12 is inserted into the groove at the end of the outer portion 3 b of the rear U-shaped member 3. The shaft 6 penetrates the screw shaft portion through the screw hole of the outer portion 3 b of the rear U-shaped member 3, and also penetrates the flaw hole of the plate-like link at the front end of the rear connection member 12. ing. That is, the end of the outer portion 3 b of the rear U-shaped member 3 and the front end of the rear connecting member 12 are coupled through the shaft 6 in the axial direction of the tire T. The shaft 6 has an outer contact member 16 fixed to the head at the inner end, and a lock nut 8 is screwed to the outer end to attach a split pin.

  The anti-slip body 1 has a U-shaped cross-sectional structure that fits into the tire T. The anti-slip body 1 having a U-shaped cross section constitutes a transverse portion that crosses the ground contact surface of the tire T by the transverse portions 2 a and 3 a of the U-shaped members 2 and 3 on the front side and the rear side. The outer portions 2b and 3b of the U-shaped members 2 and 3 on the front side and the rear side constitute an outer portion along the outer surface of the tire T. The inner portions 2 c and 3 c of the U-shaped members 2 and 3 on the front side and the rear side and the linear member 4 on the inner side constitute an inner portion along the inner surface of the tire T. The outer portion of the anti-slip body 1 has a front connecting member 11 and a rear connecting member 12 attached to the front end and the rear end in the circumferential direction of the tire T, respectively. The front connection member 11 is provided with a cylindrical connection tool 21 at the front end, and the rear connection member 12 is provided with a plate-like connection tool 22 at the rear end.

  FIGS. 5-8 shows the coupling tools 21 and 22 which connect the 2nd anti-slip | skid body 1b and the 3rd anti-slip | skid body 1c. The three sets of connectors 21 and 22 have the same structure. The cylindrical connector 21 and the plate-like connector 22 are configured to connect the plate-like link 26 at the front end of the front-side connecting member 11 and the plate-like link 36 at the rear end of the rear-side connecting member 12.

  The connecting member 11 on the front side has a plate-like link 26 at the front end that is longer than the other plate-like links. The plate-like link 26 has a shaft hole penetrating in the axial direction of the tire T at the tip, and a tubular member 27 is fitted in the tip with the shaft hole. The cylindrical member 27 has a square cylindrical shape, and penetrates the shaft holes 28 and 29 in the axial direction of the tire T through the inner plate portion on the tire T side and the outer plate portion on the opposite side. The tubular member 27 passes through the shaft member 30 in the axial direction of the tire T so as to cross the inner plate portion from the outer plate portion. The shaft-shaped member 30 includes a small-diameter portion, a medium-diameter portion, and a large-diameter operation end portion. The small diameter portion of the shaft member 30 penetrates the shaft hole 29 in the outer plate portion of the cylindrical member 27, the shaft hole in the tip portion of the plate link 26, and the shaft hole 28 in the inner plate portion of the cylindrical member 27. Yes. The medium diameter portion and the large diameter operation end portion of the shaft-shaped member 30 protrude outward from the outer plate portion of the tubular member 27. The shaft-shaped member 30 is movable back and forth in the axial direction, that is, in the axial direction of the tire T. The small-diameter portion of the shaft-like member 30 has a spiral spring 31 fitted between the outer plate portion of the cylindrical member 27 and the tip portion of the plate-like link 26, and the tip portion of the plate-like link 26 and the inner plate of the tubular member 27. The split pin 32 is attached between the parts. The spiral spring 31 presses the distal end portion of the plate-like link 26 against the split pin 32 and gives the shaft-like member 30 a force to advance toward the inner plate portion side of the tubular member 27 and the tire T side. With the elastic force of the spiral spring 31, the shaft-shaped member 30 presses the step portion between the medium diameter portion and the small diameter portion against the outer plate portion of the cylindrical member 27, and the front end of the small diameter portion is the cylindrical member 27. The state of being inserted into the shaft hole 28 of the inner plate portion is maintained.

  When the shaft-shaped member 30 is retracted against the elastic force of the spiral spring 31, the tip of the plate-shaped link 26 is retracted together with the shaft-shaped member 30 as shown in FIGS. The small diameter portion of the member 30 comes out of the shaft hole 28 of the inner plate portion of the cylindrical member 27, and a gap is formed between the inner plate portion of the cylindrical member 27 and the small diameter portion of the shaft member 30.

  The cylindrical connector 21 includes a plate-shaped link 26, a cylindrical member 27, a shaft-shaped member 30, a helical spring 31 as an elastic member, and a split pin 32 as a retaining member. The plate-like connector 22 is configured as follows.

  The rear connection member 12 has a plate-like link 36 at the rear end that is longer than other plate-like links. The plate-like link 36 penetrates the first connecting hole 37 and the second connecting hole 38 at the tip portion in the axial direction of the tire T. The plurality of connection holes 37 and 38 are arranged along the longitudinal direction and the connection direction of the plate-like link 36. The first connection hole 37 is located on the distal end side of the plate-like link 36 with respect to the second connection hole 38.

When the plate-like link 26 with the cylindrical member 27 of the cylindrical connector 21 and the plate-like link 36 with the connection holes 37 and 38 of the plate-like connector 22 are connected, the shaft-like member 30 is elastically applied by the helical spring 31. The gap is formed between the inner plate portion of the cylindrical member 27 and the small diameter portion of the shaft-shaped member 30. The tip of the plate-like link 36 with the connecting holes 37 and 38 is inserted into the gap. The shaft-shaped member 30 is advanced by the elastic force of the spiral spring 31, the small diameter portion penetrates the first connection hole 37 or the second connection hole 38 of the plate-like link 36, and the front end of the small diameter portion is the cylindrical member 27. Is inserted into the shaft hole 28 of the inner plate portion.
When the narrow-diameter portion of the shaft-shaped member 30 is penetrated into the second coupling hole 38 of the plate-like link 36, the coupling of the front coupling member 11 and the rear coupling member 12 is greater than when the first coupling hole 37 is penetrated. The length is shortened.

  At the time of separation, the shaft-shaped member 30 is retracted against the elastic force of the spiral spring 31, the small diameter portion is extracted from the shaft hole 28 of the inner plate portion of the tubular member 27, and the first link of the plate-shaped link 36 is further removed. It is extracted from the connection hole 37 or the second connection hole 38. The plate-like link 36 with the connecting holes 37 and 38 is extracted from the cylindrical member 27.

  The shaft-shaped member 30 has its axial direction and the longitudinal movement direction arranged in the axial direction of the tire T. And the front side connection member 11 and the rear side connection member 12 are made into the leaf chain, and it is set as the structure which a twist does not produce. The axial direction of the shaft-shaped member 30 is maintained in the axial direction of the tire T. Therefore, the shaft-shaped member 30 does not move backward due to the centrifugal force generated by the rotation of the tire T while the automobile is running.

[Second example (see FIGS. 11 and 12)]
The anti-slip device for the tire of this example further simplifies the connecting operation of the connecting tools 21 and 22.
As shown in FIGS. 11 and 12, the shaft-like member 30 is provided with an inclined receding drive surface 41 inclined with respect to the axial direction at the front end of the small diameter portion. The inclined backward drive surface 41 faces the insertion port of the cylindrical member 27. The shaft-shaped member 30 is configured not to rotate with respect to the cylindrical member 27. The shaft-shaped member 30 is prevented from rotating.

  At the time of connection, the plate-like link 36 with the connection holes 37 and 38 is inserted into the cylindrical member 27. Then, the front end of the plate-like link 36 abuts against the receding drive surface 41 of the shaft-shaped member 30 to retract the shaft-shaped member 30 against the helical spring 31 of the elastic member. Next, the plate-like link 36 is inserted while the front end of the shaft-like member 30 is pressed against the plate surface by the elastic force of the elastic member 31. When the first connecting hole 37 of the plate-like link 36 reaches the front end position of the shaft-like member 30, the shaft-like member 30 advances by the elastic force of the elastic member 31 and penetrates through the first connecting hole 37. Further, the front end of the shaft-shaped member 30 enters the shaft hole 28 in the inner plate portion of the tubular member 27.

  When the shaft-shaped member 30 passes through the second connection hole 38 of the plate-like link 36, the plate-like link 36 with the connection holes 37, 38 is connected to the cylindrical member 27 after the shaft-like member 30 has passed through the first connection hole 37. Push into. Then, the peripheral wall of the first connection hole 37 of the plate-like link 36 abuts against the receding drive surface 41 of the shaft-shaped member 30 to retract the shaft-shaped member 30 against the elastic member 31. Next, the plate-like link 36 is pushed in while the front end of the shaft-like member 30 is pressed against the plate surface by the elastic force of the elastic member 31. When the second connecting hole 38 of the plate-like link 36 reaches the front end position of the shaft-like member 30, the shaft-like member 30 advances by the elastic force of the elastic member 31 and penetrates through the second connecting hole 38. Further, the front end of the shaft-shaped member 30 enters the shaft hole 28 in the inner plate portion of the tubular member 27.

  Other points are the same as in the first example. Parts similar to those in the first example are denoted by the same reference numerals as those in the first example.

[Modification]
1. In the above embodiment, the cylindrical connector 21 is provided on the front connecting member 11 and the plate-like connector 22 is provided on the rear connecting member 12. On the contrary, the cylindrical connector 21 is provided on the rear side. A plate-like connector 22 is provided on the front connecting member 11 on the side connecting member 12.
2. In the above embodiment, the plate-like link 36 of the plate-like connector 22 has two connection holes 37 and 38, but three or more.
3. In the second example of the above embodiment, the inclined surface of the receding drive surface 41 of the shaft-shaped member 30 is a flat surface, but is a conical surface concentric with the shaft-shaped member 30. It is not necessary to prevent the shaft member 30 from rotating.

  The anti-slip device for a tire according to the present invention is used in various automobiles such as small, medium and large passenger cars and trucks.

T Car tire 1, 1a to 1c Non-slip body 1a First anti-slip body 1b Second anti-slip body 1c Third anti-slip body 2 U-shaped member on the front side, round bar 2a Crossing part 2b Outer part 2c Inner part 3 Rear U-shaped member on the side, round bar 3a transverse part 3b outer part 3c inner part 4 inner linear member, chain, leaf chain 2a, 3a non-slip body transverse part 2b, 3b non-slip body outer part 2c, 3c, 4 Inner part 6 of the anti-slip body 7 Shaft 7 Inner contact member 8 Lock nut 11 Front connection member, chain, leaf chain 12 Rear connection member, chain, leaf chain 16 Outer contact member 21 Cylindrical connector 22 Plate-like connector 26 Plate-like link 27 at the front end of the front-side connecting member Tubular members 28 and 29 Shaft hole 28 Shaft hole 29 on the inner plate portion of the tubular member Shaft hole 30 on the outer plate portion of the tubular member Member 31 Spiral spring, elastic member 32% Down, the plate-like link 37 coupling hole 37 first connecting hole 38 second connecting hole 41 reverse drive surface of the rear end of the retaining member 36 the rear of the coupling member, the inclined surface

Claims (4)

Several anti-slip bodies having a U-shaped cross section are fitted into a tire of an automobile and arranged at almost equal intervals on the entire circumference of the tire, and the outer portion of each anti-slip member is connected to the outer portion of the adjacent anti-slip member. In the configuration,
The anti-slip body includes a U-shaped member on the front side and a U-shaped member on the rear side in the tire rotation direction when the vehicle moves forward, and an inner linear member along the inner side surface of the tire,
The U-shaped member on the front side and the U-shaped member on the rear side have a transverse part that crosses the ground contact surface of the tire, an outer part that follows the outer surface of the tire, and an inner part that follows the inner surface of the tire, Connected by a linear member of
The outer part of the anti-slip body has front and rear connecting members attached to the front and rear ends in the circumferential direction of the tire, respectively. In the anti-slip device configured to be detachably connected to the connecting member on the front side of the anti-slip body with a connector,
Each of the front connecting member and the rear connecting member is a chain in which a plurality of links are rotatably connected with pins, and the front end link of the front connecting member and the rear end link of the rear connecting member are respectively Into a plate link,
The connector is configured to connect a plate-like link at the front end of the front-side connecting member and a plate-like link at the rear end of the rear-side connecting member, and a cylindrical shape in which the other plate-like link is inserted into one plate-like link. A member is provided, and a tubular member is provided with a shaft-like member penetrating through the tubular member. The shaft-like member is movable back and forth in the axial direction, and provided with an elastic member for applying a forward force to the shaft-like member. The plate-like link is provided with a connecting hole through which the shaft-like member passes,
When connecting the plate-like link with the cylindrical member and the plate-like link with the connecting hole, the shaft-like member is retracted against the elastic member, the plate-like link with the connecting hole is inserted into the cylindrical member, and the shaft-like member is elastic. It is advanced by the elastic force of the member, and is configured to penetrate the connecting hole of the plate-like link with the connecting hole,
When the plate-like link with the cylindrical member and the plate-like link with the connecting hole are separated, the shaft-like member is retracted against the elastic member and is extracted from the connecting hole of the plate-like link with the connecting hole, and the plate-like link with the connecting hole Is an anti-slip device for a tire characterized by being configured to be extracted from a cylindrical member. The axial member has its axial direction as the tire axial direction, and the connecting hole has its central axial direction as the tire axial direction,
The tire anti-slip device according to claim 1, wherein the front connecting member and the rear connecting member are configured so as not to be twisted so as to maintain the shaft-shaped member in the axial direction of the tire. The shaft-like member is provided with a receding drive surface having a slope inclined with respect to the axial direction at the front end,
When the plate-like link with the connecting hole is inserted into the cylindrical member, the shaft-like member is moved back against the elastic member against the backward drive surface of the front end of the shaft-like member, and the front end of the shaft-like member is elastic of the elastic member. Insertion progresses while being pressed against the plate surface by force, and when the connecting hole reaches the front end position of the shaft-shaped member, the shaft-shaped member advances by the elastic force of the elastic member and penetrates the connecting hole. The tire anti-skid device according to claim 1 or 2.   The plate-like link with connection holes is characterized in that a plurality of connection holes are provided and a plurality of connection holes are arranged along the connection direction so that the connection lengths of the front connection member and the rear connection member can be adjusted. The anti-slip device for a tire according to claim 1, 2 or 3.

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