JP5595198B2 - Anti-slip device for automobile tires - Google Patents

Description

  The present invention relates to an anti-slip device for an automobile tire, and more particularly to an anti-slip device that allows a tightening mechanism to be rotated lightly.

  In a conventional anti-skid device for automobile tires, for example, a urethane net-like anti-slip band is formed with a tightening end facing the middle in the longitudinal direction on the tire outer ring side, and a tightening mechanism is provided between the tightening ends. In addition, a method has been proposed in which the interval between the tightening end portions of the anti-slip belt is narrowed by rotating the tightening mechanism and the tire outer ring side of the anti-slip belt is tightened (Patent Document 1, Patent Document 2, Patent Document 3). Patent Document 4, Patent Document 5, Patent Document 6).

  However, in the anti-slip device described in the patent document, in order to surely prevent the anti-slip band from lifting from the tire due to centrifugal force, the anti-slip band is manufactured to be relatively hard, that is, difficult to stretch, compared with the case of the elastic band. Although this has been improved, a relatively large force is required for the rotation operation of the tightening mechanism.

  Therefore, an elastic band is formed integrally with the elastic band on the tire outer ring side of the anti-slip band, and a long groove is formed in the elastic band part extending in the longitudinal direction to adjust the tensile force. An anti-slip device as described above has been proposed (Patent Document 7).

  In the anti-skid device for an automobile tire described in Patent Document 7, the tensile force is adjusted so that it can be handled lightly even by a weak user, and the anti-slip belt can hardly be lifted from the tire by the centrifugal force during traveling.

Japanese Patent Publication No. 05-58921 Japanese Patent Laid-Open No. 05-147415 Japanese Patent Laid-Open No. 08-020210 JP 09-240232 A JP 09-156333 A JP 09-267613 A JP 2010-179686 A

However, in the anti-slip device for an automobile tire described in Patent Document 7, the anti-slip device is connected to the tightening end when the tightening band is extended by rotating the tightening mechanism and the opposing tightening ends are pulled toward each other. The edge of the belt that extends in the width direction of the tire remains in a position shifted from the tightening edge due to friction between the anti-slip belt and the tire tread, and the belt is stretched by obstructing the extension of the belt. Still needed great power.

  In view of such problems, an object of the present invention is to provide an anti-slip device for an automobile tire in which the end edge of the anti-slip band does not interfere with the extension of the tightening band part.

  Therefore, in the anti-slip device for an automobile tire according to the present invention, a tightening band portion is integrally formed on the tire outer ring side of the anti-slip body so as to connect both ends in the longitudinal direction of the anti-slip body, Anti-slip bodies are arranged in the longitudinal direction, and adjacent ends on the tire outer ring side and the inner ring side are connected to each other with a connecting member to form a non-slip band, and between the tightening ends of the anti-slip band on the tire outer ring side An anti-slip device for an automobile tire in which a tightening mechanism is provided and the opposing tightening end portions are pulled and tightened by a rotation operation of the tightening mechanism, and the anti-slip device and the end of the tightening band portion constituting the tightening end portion It is characterized in that it is separated from the tire outer ring side portion of the longitudinal edge of the body and is connected so as to be displaceable by a connecting member.

  One of the features of the present invention is that the end portion of the tightening band portion constituting the tightening end portion is separated from the tire outer ring side portion of the longitudinal end edge of the anti-slip body, and is connected displaceably by the connecting member. It is in the point made.

  As a result, when the tightening mechanism is rotated, the tightening band portion is extended, and the opposing tightening end portions are pulled toward each other, the end edge extending in the tire width direction of the anti-slip body connected to the tightening end portion slips. Even if it may remain at a position shifted from the tightening end due to friction between the stop band and the tire tread, the tire outer end side portion of the edge of the anti-slip body can be displaced with respect to the tightening end. The tightening mechanism can be rotated lightly without the end edge of the anti-slip member being stretched and obstructing the expansion of the tightening band portion.

  By the way, it is conceivable to manufacture the tightening band part separately from the anti-slip body and connect it to the anti-slip body by a connecting member. However, in this structure, the number of parts is large, the assembly work becomes complicated, and the cost increases. Invite you. On the other hand, in the present invention, the fastening end and the edge of the anti-slip body are separated and connected by a connecting member, so that the number of parts does not increase and the assembly work does not become complicated. .

  The tightening band portion may be a simple band portion, but a long groove may be formed so that the elastic elasticity of the tightening band portion can be adjusted.

  Thereby, even if the anti-slip body is made of a synthetic resin material that requires a large force for expansion and contraction, the tightening band portion can be easily extended by the long groove, so that the tightening mechanism can be rotated relatively lightly. In addition, since the tightening band portion can be manufactured to be elastic so as to obtain a necessary tightening force, it is possible to reduce the lift of the anti-slip band from the tire due to the centrifugal force during traveling.

  The long groove of the tightening band portion can be formed in a slit shape penetrating the front and back of the tightening band. In this case, the long groove of the tightening band portion may be formed extending in the longitudinal direction, or both edges thereof may be connected to each other in the middle of the longitudinal direction of the long groove.

  Further, if the tightening band portion is formed softly, if the tightening band portion is broken due to an impact or the like, the anti-slip band is unfastened. On the other hand, in the present invention, when a slit-like long groove is formed in the tightening band portion, even if one of the both side portions of the long groove is broken for some reason, the tightening does not come off, and safety of traveling on a snowy road or the like is ensured. it can.

  Further, even if the long groove of the tightening band portion is formed in a concave cross section formed on the front surface or the back surface of the tightening band, the same effect as the slit is obtained. In this case, the stretchable elasticity can be adjusted by appropriately changing the thickness and width of the thin-walled portion having a concave cross section.

  The anti-slip body can be made of a soft synthetic resin material such as urethane. Any tightening mechanism may be used as long as it can be pulled and released by a rotation operation. For example, the tightening mechanism described in Patent Document 6 can be employed.

It is a schematic side view which shows the mounting state to the tire of preferable embodiment of the slip prevention apparatus which concerns on this invention. It is a schematic perspective view which shows the said embodiment. It is a figure which shows the state which the said embodiment expand | deployed. It is a figure which shows the slip prevention body in the said embodiment. It is a figure which shows the fastening mechanism in the said embodiment. It is a perspective view which shows the operation jig in the said embodiment.

  Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. 1 to 6 show a preferred embodiment of an anti-slip device for an automobile tire according to the present invention. In the figure, the anti-slip device is provided with a net-like anti-slip band 10, and the anti-slip band 10 is composed of three sheets, two sets of six anti-slip bodies 11, 12 and 13, and one set of three sheets. The anti-slip bodies 11, 12, and 13 on both sides of the anti-slip bodies 11, 12, and 13 are manufactured so as to have a net pattern in a longitudinal direction of the anti-slip band 10. The opposing ends of the tire outer ring side and the inner ring side of 12 and 13 are connected to each other by a metal ring 14.

  The anti-slip bodies 11, 12 and 13 are made of a soft synthetic resin material such as urethane, and the anti-slip bodies 11, 12 and 13 have outer ends on the opposite side from the outer ends in the longitudinal direction on the tire outer ring side. Each of the tightening band portions 15 extending toward the surface is formed integrally with the anti-slip bodies 11, 12, and 13, and the tightening band portion 15 is formed with three slit-shaped long grooves 15 </ b> A penetrating the front and back and extending in the longitudinal direction. Has been.

  Further, on the tire inner ring side of the anti-slip bodies 11, 12, 13, connection band portions 17 extending from both outer ends in the longitudinal direction toward the outer end on the opposite side are formed integrally, respectively, Are interconnected by a metal ring 16.

  Further, a connecting band portion 18 is connected to a longitudinal outer end of the set of three anti-slip bodies 11, 12, 13 on the tire inner ring side by a metal ring 19. A locking plate 20 is attached to the end of the non-slip body 12 on the tire inner ring side by a rivet or the like, and a locking plate 20 is inserted into an end of the anti-slip body 13 on the opposite side of the tire inner ring. A locking mechanism 21 that locks by inserting a hook into the locking hole is attached by a rivet or the like, and the anti-slip belt 10 can be connected in an annular shape by locking both.

  Further, a tightening mechanism 23 is provided between the adjacent tightening end portions 25 on the tire outer ring side of the set of three anti-slip bodies 11, 12, 13. As shown in FIG. 5, the tightening mechanism 23 has through holes formed at both ends of the rotating plate 23A, and one ends of the pulling arms 23B and 23C are rotatably inserted, bent, and secured. .

  Hooks are formed at the leading ends of the pulling arms 23B and 23C so as to be hooked in the locking holes 25A of the opposing tightening ends 25 on the tire outer ring side of the adjacent anti-slip bodies 12 and 13. In addition, a pair of operation holes 23D is formed in the center of the rotation plate 23A, and a pair of pins of the operation tool 24 is inserted into the operation holes 23D, and the rotation plate 23A is rotated by rotating the operation tool 24. The opposing tightening ends 25 of the anti-slip bodies 12 and 13 on the tire outer ring side are attracted and tightened to each other by the attracting arms 23B and 23C, while the attracting arms 23B and 23C get over the protrusion 23E of the rotating plate 23A. Thus, the rotation of the rotating plate 23A in the reverse direction is restricted.

  And between the edge part of the fastening band part 15 which comprises the clamping | tightening edge part 25, and the tire outer end side site | part of the edge 12A, 13A extended in the tire width direction of the tire longitudinal direction of the anti-slip bodies 12 and 13 They are separated and connected by a metal ring 26 so that they can be displaced along the side of the tire.

  When the anti-slip device is attached to the tire 30, the anti-slip belt 10 is placed on the outer peripheral surface of the tire 30. At this time, the six anti-slip bodies 11, 12, 13 constituting the anti-slip belt 10 are lightened with urethane. Since it is manufactured, the anti-slip belt 10 can be easily put on the outer peripheral surface of the tire 30 by carrying it lightly.

  Next, the hand is turned to the inner ring side of the tire 30, and the locking plate 20 on the side of the one anti-slip body 12 facing the anti-slip belt 10 is held and inserted into the locking mechanism 21 of the other anti-slip body 13. Then, on the outer ring side of the tire 30, one of the pulling arms 23B and 23C of the tightening mechanism 23 is hooked into the locking hole 25A of the tightening end 25 of the other anti-slip body 13, and the anti-slip belt 11 is connected in an annular shape. Temporarily attach.

  When the anti-slip belt 10 is temporarily attached to the outer periphery of the tire 30, the pair of pins is inserted into the pair of operation holes 23D of the rotating plate 23A by holding the operation tool 24, and the operation tool 24 is inserted into the pair of operation holes 24 of FIG. When twisted in the direction of arrow A in (a), the rotating plate 23A rotates, and the pulling arms 23B and 23C pull the tightening end portion 25 toward each other while the inner ends thereof rotate around the rotating plate 23A. The anti-slip band 10 is tightened.

  At that time, since the elastic band is adjusted by the elongated groove 15A, the operation tool 24 can be twisted and a necessary tightening force can be obtained without applying a great force. Therefore, the risk that the non-slip band 11 is lifted from the tire 30 can be reduced.

  Further, when the operation tool 24 is twisted, the end edges 12A and 13A of the anti-slip bodies 12 and 13 connected to the tightening end portion 25 are brought into contact with the tightening end portion 25 due to friction between the anti-slip bodies 12 and 13 and the tread of the tire 30. Although there is a possibility that it will remain in a position shifted with respect to the end, and the tire outer end side portions of the end edges 12A and 13A of the anti-slip bodies 12 and 13 are arbitrarily displaced with respect to the tightening end portion 25 by the metal ring 26. Since the outer ends of the ends 12A and 13A of the anti-slip bodies 12 and 13 are not stretched to obstruct the extension of the tightening band portion 15, the operation tool 24 is lightly twisted. Can do.

  Further, when a load is applied to the anti-skid device by acceleration or braking while the vehicle is running, the end edges 12A and 13A of the anti-slip bodies 12 and 13 can be arbitrarily displaced with respect to the tightening end 25 by the metal ring 26. Therefore, the tire 30 can be moved to a predetermined position.

  When the anti-slip device 10 is removed, an operation reverse to the above may be performed.

  The long groove 15A may be formed in a concave cross section instead of a slit shape.

10 Non-slip band 11, 12, 13 Non-slip body 12A, 13A End edge 14, 19, 26 Metal ring (connecting member)
15 Tightening band part 23 Tightening mechanism 25 Tightening end part 30 Tire

Claims (2)

A tightening band is provided on the tire outer ring side of the non-slip body so as to connect both ends in the longitudinal direction of the anti-slip body, and a plurality of anti-slip bodies are arranged in the longitudinal direction and adjacent to the tire outer ring side and the inner ring side. The end portions to be connected are connected to each other by a connecting member to form a non-slip band, a plurality of anti-slip bands are arranged in the longitudinal direction, and the tire inner ring side of the plurality of non-slip bands is connected by a connecting member and located on both sides. A tightening mechanism is provided between the tightening ends on the outer side in the longitudinal direction of the anti-slip belt and between the tightening ends on the tire outer ring side of the adjacent anti-slip belt, and the opposing tightening ends are pulled and tightened by rotating the tightening mechanism. In the anti-slip device for automobile tires,
Of the plurality of anti-slip bodies (11, 12, 13) constituting the anti-slip band, the tire outer ring side portion of the longitudinal outer edge (12A, 13A) of the anti-slip bodies (12, 13) at both ends in the longitudinal direction; A tire at the inner end in the longitudinal direction of the anti-slip bodies (12, 13) at both ends in the longitudinal direction is separated from the other end of the tightening band portion (15) constituting the tightening end portion (25). A portion between the outer ring side portion and one end of the tightening band portion (15) constituting the tightening end portion (25) is integrally formed, and a plurality of anti-slip bodies (11, 11) constituting the anti-slip band are formed. 12, 13), between the tire outer ring side portions at both ends in the longitudinal direction of the anti-slip body (11) at the middle in the longitudinal direction and the both ends of the tightening band portion (15) constituting the tightening end portion (25). are integrally formed, the other end of the tension band (15) Longitudinal outer edges (12A, 13A) between the tire outer side portion of the displaceably connected by a connecting member (26), sliding in the longitudinal ends of the slip band stop member (12, 13) sliding with The stoppers (12, 13) are manufactured in a net pattern that has a front and back relationship in the longitudinal direction of the anti-slip belt, and among the plurality of anti-slip belts, the anti-slip bodies facing each other of the anti-slip belts adjacent to each other ( The fastening mechanism (23) is provided between the other ends of the fastening band portions (15) of 12, 13) , and the connecting member (26) is displaced when the fastening mechanism (23) is rotated. An anti-slip device for an automobile tire characterized in that the tightening band portion (15) can be extended .   The anti-slip device for an automobile tire according to claim 1, wherein a long groove (15A) for adjusting a tensile force is formed in the tightening band portion (15) so as to extend in a longitudinal direction.

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