JP2009120050A - Anti-skid device of tire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a cross bar across the ground contact surface of a tire from being worn by directly contacting with a road surface without any ice and snow layer, to extend the life of the cross bar or an anti-skid device, and to allow the anti-skid operation of an automobile in a lateral direction to be carried out in the anti-skid device of the tire of the automobile. <P>SOLUTION: In the anti-skid device in which the cross bar 2a crosses the ground contact surface of the tire T and a plurality of the cross bars are arrayed at an interval in the circumferential direction of the tire, a ground contact member 31 is mounted on the cross bar, and the ground contact member is configured to protrude to the outside opposite to the tire side of the cross bar and to be abraded and worn by contacting with the road surface without any ice and snow layer. The ground contact member can be removed from the cross bar. The ground contact member mounted on the cross bar is configured to be replaced by a new one when the amount of wear is increased. The cross bar with the ground contact member is configured to form a step part 36 in a longitudinal direction and to carry out the anti-skid operation of the automobile in the lateral direction in the step part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

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

  In the anti-slip device exemplified in Patent Documents 1 and 2, a non-slip body having a U-shaped cross section is fitted into an automobile tire from the outer peripheral side. Several non-slip bodies, for example, 2 to 4, 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 are bars that are curved in a U shape, and have a transverse part that crosses the ground contact surface of the tire, an outer part that extends along the outer surface of the tire, and an inner part that extends along the inner surface of the tire. The inner linear members are chained to connect 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

[Issues of background technology]
In the tire anti-slip device as described above, the crossing portion of the anti-slip body is a U-shaped member crossing portion and is a steel rod. This bar traverses the tire contact surface along the axial direction of the tire. It is a cross bar. The plurality of cross bars are arranged at intervals in the circumferential direction of the tire. Each time these cross bars reach the lower part of the tire while the vehicle is running, they bite into the ice and snow layer on the road surface and act as a slip in the running direction of the vehicle.

Assignment 1
An automobile may travel on a road surface without an ice and snow layer, such as a road surface in a tunnel, with an anti-slip device attached. When a car runs on a concrete surface or asphalt surface without an ice / snow layer, each cross bar hits the concrete surface or asphalt surface of the road surface every time it reaches the lower part of the tire. Then, the cross bar is worn out violently. Crossbars or anti-slip devices have a very short life.

Assignment 2
The cross bar forms step portions on both sides of the tire in the circumferential direction on the tire contact surface, and exerts an anti-slip action against slipping in the traveling direction of the automobile. However, it is difficult to prevent the vehicle from slipping in the lateral direction of the automobile.

[Idea for solving problems]
In the tire anti-slip device in which the rod crosses the ground contact surface of the tire, the above-described problem 1 is that when the automobile travels on a road surface without an ice / snow layer, the cross bar It is caused by rubbing against it.

  Therefore, a grounding member is attached to the cross bar, and the grounding member protrudes on the outer side opposite to the tire side of the cross bar. It was decided that the grounding member would rub against and wear against the road surface without the snow and ice layer. When the amount of wear increases, the grounding member attached to the cross bar is replaced with a new one. Make disposable consumables. Such a grounding member can be manufactured at low cost.

  The above problem 2 is caused by the fact that the cross bar on the tire contact surface has a step in the circumferential direction of the tire contact surface, but there is no step in the cross direction of the tire contact surface and the longitudinal direction of the cross bar. is doing.

  Therefore, when attaching the grounding member to the cross bar, a step portion is formed in the longitudinal direction of the cross bar. The crossing bar with the grounding member can exert an anti-slipping action against the lateral slip of the automobile at the step portion in the longitudinal direction.

1) In a tire anti-slip device in which a cross bar crosses a ground contact surface of an automobile tire and a plurality of cross bars are arranged at intervals in the circumferential direction of the tire,
A grounding member is attached to the cross bar, the grounding member protrudes to the outer side opposite to the tire side of the cross bar, and the grounding member is rubbed and worn against a road surface without an ice and snow layer.
The grounding member is detachable from the cross bar, and the grounding member attached to the cross bar is configured to be replaced with a new one when the amount of wear increases.
2) In the tire anti-slip device,
The crossing bar with the grounding member is characterized in that a step portion is formed in the longitudinal direction and the step portion has an anti-slip action in the lateral direction of the automobile.
3) In the tire anti-slip device,
The ground member is made of an elastic body and also serves as a buffer.

In the anti-slip device, the crossing bar is difficult to directly contact the road surface having no ice / snow layer. Crossbars or anti-slip devices do not drastically reduce their life.
Further, the cross bar with the grounding member acts to prevent the vehicle from slipping in the lateral direction at the step portion in the longitudinal direction.

[First example (see FIGS. 1 to 6)]
The anti-slip device for a tire of this example is shown in FIG. 1 as viewed from the outside of the vehicle when mounted on the tire T of the vehicle, and FIG. 2 as viewed from the inside of the vehicle. In this anti-slip device, the first, second, and third anti-slip bodies 1a, 1b, and 1c are connected in the circumferential direction of the tire T at substantially equal intervals. 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 FIG. FIG. 3 is a front view from the outside of the automobile. 4 is an enlarged sectional view taken along line AA in FIG. The first anti-slip body 1, 1 a includes a U-shaped member 2 on the front side (left side in FIGS. 1 and 3) of the tire T during forward movement of the vehicle indicated by an arrow in FIG. A U-shaped member 3 on the side (right side in FIGS. 1 and 3) and a linear member 4 on the inside of the automobile or tire T are provided.

  The U-shaped members 2 and 3 on the front side and the rear side are respectively two and arranged in the front-rear direction. The four U-shaped members 2 and 3 in total have the same structure and are formed by bending a steel bar. The U-shaped members 2 and 3 are formed in a U shape that fits to the outer peripheral side of the tire T, and crossing portions 2a and 3a that cross the ground contact surface of the tire T, and outer portions 2b and 3b that extend along the outer surface of the tire T, It has inner portions 2c and 3c along the inner surface of the tire T.

  The two U-shaped members 2 in the front row and the rear row of the front side are each attached to the end of the outer portion 2b so as to be rotatable with a pin and to the end of the inner portion 2c so as to be rotatable with a pin. ing. The connecting pieces 5 and 6 connect the two U-shaped members 2 on the front side. The two U-shaped members 3 in the front row and the rear row on the rear side are rotatably attached to the connecting piece 7 with the end of the outer portion 3b and the end of the inner portion 3c with a pin, respectively. The connecting pieces 7 and 8 connect the two U-shaped members 3 on the rear side. 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.

  Further, the U-shaped member 2 in the front row on the front side has a connecting plate 11 attached to the end of the outer portion 2b so as to be rotatable with a pin. The connecting plate 11 projects forward and is used for the front connecting member. The U-shaped member 2 in the front rear row has a connecting plate 12 rotatably attached to the end of the inner portion 2c with a pin. The connecting plate 12 projects rearward and is used for the inner linear member. Moreover, the U-shaped member 3 in the rear row of the rear side has a connecting plate 13 rotatably attached to the end of the outer portion 3b with a pin. The connecting plate 13 projects rearward and is used for the rear connecting member. The U-shaped member 3 in the front row on the rear side has a connecting plate 14 attached to the end of the inner portion 3c so as to be rotatable with a pin. The connecting plate 14 projects forward and is used for the inner linear member.

  The inner linear member 4 is formed in a string by connecting a large number of plate-like links rotatably with pins. Chained. This chain 4 has a front end rotatably attached to the front inner linear member connecting plate 12 with a pin and a rear end attached to the rear inner linear member connecting plate 14 so as to be rotatable with a pin. . The inner linear member 4 connects the inner portion 2c of the front U-shaped member 2 and the inner portion 3c of the rear U-shaped member 3 via connecting plates 12 and 14 for inner linear members. .

  That is, 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 includes a cross section 2a and 3a of the U-shaped members 2 and 3 on the front side and the rear side to form a cross section that crosses the ground contact surface of the tire T. The outer portions 2b and 3b of the members 2 and 3 and the outer connecting pieces 5 and 7 and the outer connecting plates 11 and 13 constitute an outer portion along the outer surface of the tire T, and the U-shaped members 2 on the front side and the rear side. The inner side portions 2c and 3c, the inner connecting pieces 6 and 8, the inner linear member 4 and the inner connecting plates 12 and 14 constitute an inner portion along the inner surface of the tire T. Further, the anti-slip body 1 includes a front U-shaped member 2, front connection pieces 5 and 6 and front connection plates 11 and 12, and constitutes a front portion, a rear U-shaped member 3 and a rear connection. The pieces 7 and 8 and the connecting plates 13 and 14 on the rear side constitute the rear part.

  As shown in FIG. 4, the front portion of the anti-slip body 1 is provided with an outer contact member 16 that contacts the outer surface of the tire T on the connection plate 11 for the front connection member, and the connection plate 12 for the inner linear member. Further, an inner abutting member 17 that hits the inner surface of the tire T is provided. The outer and inner contact members 16 and 17 are disposed at positions corresponding to the inner peripheral side of the outer surface of the tire T and the inner peripheral side of the inner surface, respectively.

  Similarly, the rear portion of the anti-slip body 1 is also provided with an outer contact member 18 that contacts the outer surface of the tire T on the connecting plate 13 for the rear connecting member, and the tire T on the connecting plate 14 for the inner linear member. An inner abutting member 19 that hits the inner side surface is provided. The outer and inner contact members 18 and 19 are disposed at positions corresponding to the inner peripheral side of the outer surface of the tire T and the inner peripheral side of the inner surface, respectively.

  As shown in FIG. 3, the anti-slip body 1 has connecting members 21 and 22 attached to the front end and the rear end in the circumferential direction of the tire T on the outer side. The connecting members 21 and 22 on the front side and the rear side are formed in a string shape by connecting a number of plate links rotatably with pins. Chained. The front connecting member 21 has a rear end link attached to the connecting plate 11 for the front connecting member so as to be rotatable with a pin. The rear connecting member 22 has a front end link attached to the connecting plate 13 for the rear connecting member so as to be rotatable with a pin.

  The front and rear connecting members 21, 22 are provided with female and male connectors. The female connector penetrates the connection hole 23 through the link at the front end and free end of the connection member 21 on the front side. The male connector is provided with a connecting pin 26 projecting outward from the rear end and free end link of the rear connecting member 22. The female and male couplers are coupled by inserting a coupling pin 26 into the coupling hole 23.

  As shown in FIG. 3 and FIG. 4, the two U-shaped members 2 on the front side and the two U-shaped members 3 on the rear side are respectively steel bars of the transverse portions 2a and 3a, that is, the transverse bars 2a and 3a. The grounding member 31 is detachably attached. The ground contact member 31 protrudes to the outer side opposite to the tire T side of the cross bars 2a and 3a. The cross bars 2a and 3a are difficult to directly contact a road surface without an ice and snow layer. The ground contact member 31 attached to the crossing bars 2a and 3a rubs and wears against a road surface without an ice and snow layer. When the amount of wear increases, it is removed from the cross bars 2a and 3a. The grounding member 31 is replaced with a new one every time the wear amount increases.

The transverse bars 2a and 3a have a rectangular cross section and are flat square bars.
As shown in FIGS. 4 to 6, the grounding member 31 is formed in a bar shape along the crossing bars 2 a and 3 a, and a rectangular cylindrical portion 32 is formed along the longitudinal direction inside the tire T side. The rectangular tubular portion 32 is shaped to fit into the cross bars 2a and 3a, and has a cut 33 along the longitudinal direction on the inner wall on the tire T side. The grounding member 31 is an elastic body such as rubber of a tire and also serves as a buffer. In the rectangular cylindrical portion 32, the cross bars 2a and 3a are fitted from the cut line 33, and the cut line 33 is arranged inside the tire T side of the cross bar 2a and 3a. The grounding member 31 is fitted into the cross bars 2a and 3a from the outside opposite to the tire T side.

  A fixing tool 34 having a groove-shaped cross-sectional shape is fitted from the inside on the tire T side outside the rectangular cylindrical portion 32 of the grounding member 31. Between the fixture 34 and the cross bars 2a and 3a, a wall with a cut 33 on the tire T side of the rectangular tubular portion 32 and walls on both sides in the circumferential direction of the tire T are sandwiched. The fixing tool 34 is screwed into the side walls on both sides in the circumferential direction of the tire T through a plurality of bolts 35. The fixture 34 and the bolt 35 are made of metal such as steel. The plurality of bolts 35 press the walls on both sides of the rectangular cylindrical portion 32 in the circumferential direction of the tire T against the cross bars 2a and 3a. The grounding member 31 is fixed to the cross bars 2a and 3a with a fixture 34 and a bolt 35. When the grounding member 31 is removed, the bolt 35 is loosened, the fixture 34 is extracted from the rectangular cylindrical portion 32, and the rectangular cylindrical portion 32 is extracted from the transverse bars 2a and 3a.

  The crossing bars 2a, 3a with the grounding member 31 have stepped portions 36 in the longitudinal direction at both ends of the grounding member 31, respectively. The step portion 36 acts to prevent the vehicle from slipping in the lateral direction. The ground contact member 31 is formed with a plurality of grooves 37 penetrating in the circumferential direction of the tire T on the outer surface opposite to the tire T side. The outer side surface of the grounding member 31 is formed with a step portion for preventing the vehicle from slipping in the lateral direction on both sides of the opening of the groove 37.

[Second example (see FIG. 7)]
In the tire anti-slip device of this example, the number of grounding members 31 attached to each cross bar 2a, 3a is two as shown in FIG. 7 instead of one in the first example. In each cross bar 2a, 3a, the number of longitudinal step portions 36 formed at the end of the grounding member 31 is four instead of two in the first example.
Other points are the same as in the first example. In addition, the grounding member 31 attached to each cross bar 2a, 3a can also be made into three pieces or four pieces.

[Third example (see FIGS. 8 to 10)]
In the tire anti-slip device of this example, the grounding member is made of metal such as steel instead of the elastic body 31 such as rubber in the first example. The fixing member 34 and the bolt 35 of the grounding member are the same as those in the first example.

  As shown in FIGS. 8 to 10, the steel grounding member 41 is formed into a bar shape along the cross bars 2 a and 3 a, and has a groove-like cross-sectional shape that is fitted into the cross bars 2 a and 3 a from the outside opposite to the tire T side. Yes. The grounding member 41 includes a wear plate portion 42 that covers an outer surface opposite to the tire T side of the cross bars 2a and 3a, and a fixed plate portion 43 that covers both side surfaces of the cross rods 2a and 3a in the tire T circumferential direction.

The grounding member 41 is fitted into the cross bars 2a and 3a from the outside opposite to the tire T side. The grounding member 41 is fitted with a fixture 34 having a groove-shaped cross section from the inside on the tire T side. Fixing plate portions 43 on both sides of the grounding member 41 are sandwiched between the side walls on both sides of the fixture 34 and the cross bars 2a, 3a. Each of the plurality of bolts 35 is threaded through the side walls on both sides of the fixture 34 to press the fixing plate portions 43 on both sides of the grounding member 41 against the transverse bars 2a and 3a. The grounding member 41 is fixed to the crossing bars 2a and 3a with a fixture 34 and a bolt 35. When removing the grounding member 41, the bolt 35 is loosened, the fixture 34 is pulled out from the grounding member 41, and the grounding member 41 is pulled out from the cross bars 2a and 3a.
Other points are the same as in the first example.

[Modification]
1) In the above embodiment, the number of front U-shaped members 2 and the number of rear U-shaped members 3 are two, but one.
2) In the above embodiment, the anti-slip bodies 1, 1 a to 1 c are only the inner linear member 4 that connects the front and rear U-shaped members 2, 3, but the inner linear member 4 and the outer A linear member is used. The outer linear member connects the outer portions of the U-shaped member 2 on the front side and the U-shaped member 3 on the rear side. The outer linear member has, for example, a chain configuration like the inner linear member 4.
3) In the above embodiment, the number of anti-slip bodies 1 is three, but it is two or four.

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

The front view of the tire mounting state of the anti-slip | skid apparatus in the 1st example of embodiment of this invention. The rear view of the tire mounting state of the same apparatus. The enlarged front view of the 1st non-slip body in FIG. FIG. 4 is an enlarged sectional view taken along line AA in FIG. 3. BB partial view of FIG. 4 The CC sectional view enlarged view of FIG. It is a figure of the crossing bar part with a grounding member of the anti-slip | skid apparatus in the 2nd example of embodiment, and is a figure similar to FIG. It is a figure of the U-shaped member with the grounding member of the anti-slip | skid apparatus in a 3rd example, and is a figure similar to FIG. DD line partial view of FIG. FIG. 9 is an enlarged cross-sectional view taken along the line EE of FIG.

Explanation of symbols

T Automobile 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 2a on the front side Cross section, steel bar, cross bar 2b Outer part 2c Inside Part 3 rear U-shaped member 3a crossing part, steel bar, crossing bar 3b outer part 3c inner part 4 inner linear member, chain 5 outer connecting plate for front U-shaped member 6 inner side for front U-shaped member Connecting plate 7 Outer connecting plate 8 for rear U-shaped member Inner connecting plate 11 for rear U-shaped member Connecting plate 12 for front connecting member Connecting plate 13 for inner linear member For rear connecting member The connecting plate 14 for the inner linear member 2a, 3a Crossing portions 2b, 3b, 5, 7, 11, 13 of the non-slip body 2c, 3c, 4, 6, 8, 12, 14 Non-slip body inner part 2, 5, 6, 11, 12 Anti-slip body front part 3, 7, 8, 3, 14 Rear portion 16 of the anti-slip body Front outer contact member 17 Front inner contact member 18 Rear outer contact member 19 Rear outer contact member 21 Front connection member 22 Rear connection member 23 Connecting hole 26 Connecting pin 23, 26 Connecting tool 31 Grounding member, elastic body, buffer 32 Square tubular part 33 of grounding member Cut 34 of square tubular part Grounding member fixing tool 35 Fixing bolt 36 Crossing with grounding member Stepped portion 37 of the rod Ground groove 41 of the grounding member Grounding member, metal 42 Wear plate portion 43 of the grounding member 43 Fixed plate portion of the grounding member

Claims (3)

An anti-slip device for a tire in which a cross bar traverses a ground plane of an automobile tire and a plurality of cross bars are arranged at intervals in the circumferential direction of the tire.
A grounding member is attached to the cross bar, the grounding member protrudes to the outer side opposite to the tire side of the cross bar, and the grounding member is rubbed and worn against a road surface without an ice and snow layer.
An anti-slip device for a tire according to claim 1, wherein the grounding member is removable from the crossing bar, and the grounding member attached to the crossing bar is replaced with a new one when the amount of wear increases.   The tire anti-slip device according to claim 1, wherein the crossing bar with the grounding member is configured to form a stepped portion in the longitudinal direction and to prevent the vehicle from slipping in the lateral direction at the stepped portion.   The anti-slip device for a tire according to claim 1 or 2, wherein the grounding member is an elastic body and also serves as a buffer.

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