JP2007245979A - Anti-skid device for automobile tire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anti-skid device for an automobile tire capable of easily operating a lock member, and preventing slacking of fastening during traveling. <P>SOLUTION: A lock plate 62 is attached to one side of a drawing end portion 61, and a fastening tool 72 is attached to the other side. A ratchet gear 72B which can be operated to rotate from the outside is rotatably built in the fastening tool. A ratchet claw 72G permitting rotations of the ratchet gear and regulating reverse rotations is provided so as to be separated from the outside, and energized in a locking state to the ratchet gear by a spring member 72F. The ratchet gear is coaxially provided with a winding drum 72C. A locking mechanism 63 capable of locking the lock plate is attached to the fastening tool. Wire 73 is wound around the winding drum, and a hook 74 hooked to the lock plate is coupled to a tip end of the wire. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an anti-skid device for automobile tires, and more particularly, to an anti-skid device that can be easily and lightly handled by a weak woman or an elderly person.

  For example, when traveling on snowy roads or icy roads, it is required to install a non-slip device on the tire in order to prevent a slip accident. In such a non-slip device, a plurality of synthetic resin or rubber net bodies having a repetitive net pattern are arranged in the longitudinal direction and the adjacent widthwise side portions are sequentially connected by links, or a pair of side members. In many cases, a ladder type in which a plurality of non-slip belts are attached in a ladder shape with a predetermined interval therebetween is employed.

  By the way, when attaching a non-slip device to a tire, the main body part that demonstrates the anti-slip function is put on the tire tread, and both ends on the inner ring side and the outer ring side of the main body part are connected to each other with a joint hook or a lock mechanism and endless. A system is adopted in which the outer ring side of the main body portion is tightened with a tightening tool so that the main body portion is in close contact with the tire tread.

  For example, the base part of the pulling arm is attached to both ends of the lock member, and the two pulling arm tip parts are to be narrowed on the tire outer ring side of the main body portion of the anti-skid device at two locations (hereinafter referred to as “the pulling end”). Each of the pulling arms is pulled toward each other, and the distance between the two pulling ends on the tire outer ring side is increased. There has been proposed a tire anti-skid device which is made narrower (Patent Document 1, Patent Document 2).

  Further, the base of the lock member is attached to one of the pulling end portions directly or via a base plate, the base of the pulling arm is rotatably connected to the tip of the lock member, and the tip of the pulling arm is connected to the other end. An anti-skid device for a tire has also been proposed in which a locking member is rotated around its base portion and the interval between the pulling end portions is narrowed (Patent Document 3).

  However, in the anti-slip device described in Patent Documents 1 to 3, the main body portion is trying to draw the drawing end portions in a state where the main body portion is not familiar with the tire, so the lock member must be rotated with a large force, In the case of a weak woman or an elderly person, the lock member is still difficult to operate, and the anti-skid device may not be attached to the tire.

  On the other hand, the first hook is attached to one of the opposing drawing end portions of the main body portion, the second hook is hooked to the other, and the ratchet claw lever operation is repeated to repeatedly feed and lock the ratchet gear. An anti-skid device has been proposed in which a wire or rod is wound or slid and the second hook is drawn toward the first hook to narrow the distance between the two drawing ends (patent) Reference 4).

  The anti-skid device described in Patent Document 4 has an advantage that it can be easily handled even by a weak woman or an elderly person because the lever of the ratchet mechanism may be swung.

JP-A-2-48204 JP 2000-219091 A JP 2005-81894 A Japanese Patent Publication No.52-2163

  However, in the anti-skid device described in Patent Document 4, the ratchet gear is rotated and biased in a direction in which the first and second hooks are separated from each other, and the ratchet pawl is detachably locked to the ratchet gear. Since the gear is rotated against the urging force by the swinging operation, the ratchet pawl is suddenly released due to impact, etc., the ratchet gear is reversed by the urging force, and the drawing end is separated. There is a possibility that the anti-skid device will be loosened, and it is difficult to put it into practical use in terms of reliability.

  In view of such problems, an object of the present invention is to provide an anti-skid device for an automobile tire that can be easily operated by a woman or an elderly person and that is not likely to be loosened suddenly during traveling.

  Accordingly, an anti-skid device for an automobile tire according to the present invention includes an endless connection between a tire inner ring side and an outer ring side of a main body portion, and then tightens the pulling end portions facing each other on the tire outer ring side of the main body portion. In the anti-skid device for an automobile tire, the main body portion is tightened and brought into close contact with the tire by pulling each other by means of a lock plate attached to one of the mutually opposite pulling end portions, and the pulling A ratchet gear which is attached to the other end and can be rotated from the outside is rotatably incorporated, and the ratchet gear which allows the rotation of the ratchet gear and locks the ratchet gear to restrict reverse rotation. The ratchet pawl is provided with a spring member that urges the ratchet pawl to engage with the ratchet gear. Includes a fastener that is provided so that the winding drum can be rotated coaxially and by a ratchet gear, a lock mechanism that is attached to the fastener and can lock the lock plate, and a hook that can be hooked on the lock plate. And a wire wound around the winding drum, the hook being attached to the tip.

  One of the features of the present invention is that a lock plate is attached to one of the drawing end portions, a fastener having a built-in ratchet mechanism is attached to the other, a lock mechanism is attached to the fastener, and a hook is hooked on the lock plate. Is operated to wind up the hook wire and lock the lock plate by the lock mechanism.

  Thereby, even if the ratchet pawl of the ratchet mechanism is unexpectedly removed due to an impact or the like, the lock plate is locked to the lock mechanism, so that the tightening is not loosened.

  The ratchet gear only needs to be able to be rotated from the outside.For example, the knob may be exposed on the outer surface of the fastener, and the ratchet gear may be rotated by rotating the knob, and the side surface of the ratchet gear is exposed. A hole into which the projection of the operation tool is fitted may be formed on the side surface, and the ratchet gear may be rotated by the operation tool.

  The ratchet gear may be directly rotated as described above, or may be rotated via a gear group. In particular, when decelerating via the gear group, the ratchet gear can be rotated with a small force.

  In the above invention, the lock plate is locked by the lock mechanism, but the tightening tool is configured so as to allow the reverse rotation of the take-up drum only when the rotation operation unit for rotating the take-up drum is pulled in the axial direction. Even so, the tightening can be prevented from loosening unexpectedly.

  That is, the anti-skid device for an automobile tire according to the present invention connects the tire inner ring side and the outer ring side of the main body portion endlessly, and then tightens the pulling end portions facing each other on the tire outer ring side of the main body portion. In the anti-slip device for an automobile tire, the main body portion is tightened and brought into close contact with the tire by being pulled toward each other, and can be hooked on one of the pulling end portions facing each other on the tire outer ring side of the main body portion. A hook is attached to the other end of the drawing end, and a winding drum is rotatably incorporated therein, and a rotation operation unit for rotating the winding drum is rotatable and in the axial direction of the rotation shaft. It is slidably mounted, and the rotation restricting part allows the rotation operation part or the take-up drum to rotate in the operating posture, while restricting reverse rotation and releasing the sliding in the axial direction. A fastener which is formed to allow the reverse rotation in the energized, the hook is attached to the tip, characterized in that and a wire wound on the winding drum.

  One of the features of the present invention is that when the rotation operation unit is in a normal operation posture, the rotation restriction unit allows rotation of the rotation operation unit or the take-up drum and restricts reverse rotation, while the rotation operation unit slides in the axial direction. In this case, the rotation restricting portion allows reverse rotation when the release posture is reached.

  As a result, as long as the rotary operation unit is not pulled in the axial direction, the tightening is not loosened, and high reliability can be guaranteed.

  Also in this example, a lock plate and a lock mechanism can be provided, and the tightening reliability can be further improved. That is, a lock plate that is attached to one of the drawing end portions and hooked to the hook and a lock mechanism that is attached with a fastener and locks the lock plate may be further provided.

  The lock mechanism only needs to be able to lock the lock plate. For example, a lock hole can be formed in the lock plate, and the lock piece is urged by a spring member to be fitted into the lock hole and locked.

  Since the anti-skid device according to the present invention only needs to be able to fasten the tire outer ring side of the main body portion, for example, in the anti-skid device constituted by a plurality of treads, a draw end is formed in the middle of the outer ring side of one tread, The space between them may be drawn by a ratchet type fastener, or the end portion of an adjacent tread may be used as a drawing end portion, and the space between them may be drawn by a ratchet type fastener.

  Further, both end portions of the side member of the ladder type anti-slip device may be used as a drawing end portion, and the portion between them may be drawn by a ratchet type fastener, and a drawing end portion is formed in the middle of the side member. The space between them may be pulled by a ratchet type fastener.

  Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. 1 to 5 show a preferred embodiment of an anti-skid device for an automobile tire according to the present invention. In the figure, the main body portion of the anti-skid device 10 is composed of, for example, six treads 12 (may be composed of four treads), and each tread 12 is made of a synthetic resin material such as urethane resin.

  The tread 12 includes a belt-like portion 14 that extends in the width direction at both ends in the longitudinal direction, an X-shaped portion 16 that extends between the belt-like portions 14, and a short-band-like portion that extends between the X-shaped portion 16 and the belt-like portion 14. The spike 20 is attached to the surface.

  In the tread 12, short arm portions 22 extend from both belt-like portions 14 toward the other belt-like portion 14 on the tire outer ring side and the tire inner ring side, and the two arm portions 22 are connected to each other by a short link 24. Yes.

  Further, three treads 12 are formed as a set, and adjacent ends of the three treads 12 are connected to each other by a link 24 on the tire outer ring side and the tire inner ring side to form a tread pair 26. .

  The adjacent ends of the two pairs of treads 26 are connected to each other by a synthetic resin arm 28 and metal links 29 on both sides on the tire inner ring side, and are also positioned at both ends of the anti-skid device 10. Then, on the tire inner ring side, a push-type lock mechanism 50 is attached to one side and a lock plate 52 is attached to the other side, and the push-type lock mechanism 50 and the lock plate 52 are detachably engaged and locked. It has become.

  On the other hand, the adjacent ends of the two pairs of treads 26 and the ends located at both ends of the anti-slip device 10 on the tire outer ring side are the pulling end portions 61 facing each other, and the one pulling facing each other One end portion of the lock plate 62 is fixed to the end portion 61 by a rivet, and a drawing tool 70 is attached to the other drawing end portion 61.

  In this attracting tool 70, one end portion of the base plate 71 is fixed to the other attracting end portion 61 by a rivet, a ratchet type fastening tool 72 is fixed substantially at the center of the base plate 71, and a push is applied to the tip end portion of the base plate 71. A lock mechanism 63 of the type is rotatably attached.

  In the fastener 72, a ratchet gear 72B is rotatably incorporated in the case 72A. A winding drum 72C is coaxially fixed to the ratchet gear 72B, and a wire 73 is wound around the winding drum 72C. A hook 74 is fixed to the head.

  Two holes 72E into which the protrusions 75A of the operation jig 75 can be fitted are formed on the side surface of the ratchet gear 72B. The side surface of the ratchet gear 72B is exposed from the case 72A and can be rotated by the operation jig 75 from the outside. It is like that.

  A lever 72D is swingably supported on the case 72A, and a ratchet pawl 72G is formed at the tip of the lever 72D. The lever 72D is urged by a leaf spring 72F in a direction in which the ratchet pawl 72G engages with the ratchet gear 72B. ing.

  The lock plate 62 has a lock hole 62 </ b> A formed at the tip, and a hook hole 62 </ b> B for hooking a hook is formed at the tip of the lock plate 62. The push-type lock mechanism 63 has a lock piece 63B mounted on a bracket 63A so as to be rotatable around a mounting shaft 63C, and is urged to rotate by a coil spring 63D. A protrusion 63E is formed at the rear end of the lock piece 63B to lock The lock plate 62 is locked by being fitted into the lock hole 62 </ b> A of the plate 62.

  On the other hand, the push-type lock mechanism 50 has the same structure as the lock mechanism 63, and the lock plate 52 has the same structure as the lock plate 62 except for the hook hole 62B.

  When mounting the anti-skid device 10 on a tire, the ground contact portion of the tire is sandwiched between the two sets of tread pairs 26, and the anti-skid device 10 is put on the tire with the outermost part of the two sets of tread pairs 26. Thereafter, the hand is turned to the tire inner ring side, the lock plate 52 is locked by the push-type lock mechanism 50, and the tire inner ring side of the anti-slip device 10 is made endless.

  Next, the lever 72D of the tightening tool 73 of the two attracting tools 70 is swung against the urging force of the leaf spring 72F, the latching gear 72B is released, the wire 73 is pulled out, and the hook 74 at the tip is pulled out. Is hooked into the hook hole 62 </ b> B of the lock plate 62. Thereafter, the protrusion 75 </ b> A of the operation jig 75 is fitted into the hole 72 </ b> E of the ratchet gear 72 </ b> B of one attracting tool 70, and the ratchet gear 72 </ b> B is rotated by the operation jig 75.

  Then, the wire 73 is taken up by the take-up drum 72C, the lock plate 62 approaches the push-type lock mechanism 73, and the two attracting end portions 61 facing each other approach each other. When the ratchet gear 72B is further rotated, the distal end portion of the lock plate 62 moves the lock piece 63B of the lock mechanism 63 against the urging force of the coil spring 63D and swings the lock piece 63 to the lower side of the lock piece 63. The protrusion 63E of the lock piece 63B is fitted into the lock hole 62A of the lock plate 62, and the lock plate 62 is locked by the lock mechanism 63.

When the lock plate 62 is locked by the lock mechanism 63 in the same manner for the other attracting tool 70, the tire outer ring side of the main body portion of the anti-slip device 10 is tightened, and the tread 12 is in close contact with the tire outer peripheral surface.

  At this time, since the lock plate 62 is locked by the push-type locking mechanism 63, even if the ratchet pawl 72G is detached from the ratchet gear 72B for some reason such as an impact, the anti-slip device 10 is not loosened and attached. Can guarantee the reliability.

  When removing the non-slip device 10, the hook 74 is removed from the lock plate 62, and then the lock piece 63 B of the lock mechanism 63 is swung to pull out the lock plate 62.

  6 and 7 show a second embodiment. In this example, a fastener 80 having a structure different from that of the fastener 72 in the first embodiment is used. The tightening tool 80 has a cylindrical portion formed at the bottom of a dial (rotating operation portion) 81, a prismatic rotating shaft 82 is erected at the center of the cylindrical portion, and an elastic lever is provided on the inner peripheral surface of the cylindrical portion. (Rotation restricting portion) 81A is inclined in the circumferential direction and formed at equal angular intervals.

  The second part 83 is rotatably and slidably supported on the rotary shaft 82 of the dial 81. One of the second parts 83 sandwiching the flange allows the rotation of the dial 81 and the elastic lever 81A. A ratchet gear (rotation restricting portion) 83A that stops and restricts reverse rotation is formed, and a cylindrical portion having a gear 83B formed on the inner peripheral surface is formed on the other side.

  A gear group 84 is built in the cylindrical portion. In the gear group 84, three gears 84A are rotatably supported at equal angular intervals between a pair of plates, and the three gears 84A are second parts. 83 is engaged with a gear 83B, and a winding drum 84B is formed in a half portion of the gear group 84, and a wire 73 is wound. The wire 73 is pulled out from a take-out hole 83C of the second component 83, A hook 74 is connected to the tip.

  A pinion gear 85 is inserted between the gears 84A and meshed therewith, and the pinion gear 85 is externally fitted to the rotary shaft 82 and rotated by the dial 81. The cylindrical part of the second part 83 is sealed with a cover 86.

  Normally, the dial 81 is in an operating posture in which the dial 81 is fitted into the ratchet gear 83 </ b> A of the second part 83. The dial 81 may be urged to the operating posture by a spring member. When the dial 81 is rotated in this operating posture, the elastic lever 81A gets over the ratchet gear 83A while being elastically deformed and is locked to each tooth of the ratchet gear 83A, thereby preventing reverse rotation. When the dial 81 is rotated, the pinion gear 85 is rotated, the three gears 84A are rotated, and the three gears 84A are meshed with the gear 83B of the second part 83. The winding drum 84 </ b> B rotates with the rotation of the wire 73, and the wire 73 can be wound up.

  When the dial 81 is pulled, the meshing between the elastic lever 81A and the ratchet gear 83A is released. In this release posture, the dial 81 can be rotated not only in the reverse direction but also in the reverse direction, and the gear 84A can freely rotate and reversely rotate in the second part 83. Therefore, when the wire 73 is pulled, the winding drum 84B freely rotates in the reverse direction, and the wire 73 is pulled out.

  Therefore, when the tightening tool 80 of this example is used in place of the tightening tool 72 in the first embodiment, the winding drum 84B does not rotate reversely unless the dial 81 is pulled and slid. In addition to the lock of the lock plate 62, the wire 73 is also prevented from being pulled out, so that the loosening of the anti-slip device 10 can be more reliably prevented.

  When the tightening tool 80 of this example is employed, unless the dial 81 is pulled and slid, the take-up drum 84B does not reversely rotate, and the wire 73 is reliably prevented from being pulled out. The antiskid device 10 can also be configured without using the push-type lock mechanism 63.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic plan view showing a preferred embodiment of a vehicle tire anti-skid device according to the present invention. It is a figure which shows typically a motion of the attracting tool in the said embodiment. It is a figure which shows the structure of the fastener in the said attraction tool. It is a figure which shows the relationship between the lock plate 62 and the lock mechanism 63 in the said embodiment. It is a perspective view which shows the operation jig in the said embodiment. It is a schematic perspective view which shows the fastener 80 in 2nd Embodiment. 3 is an exploded perspective view showing the tightening tool 80. FIG.

Explanation of symbols

10 Non-slip device 12 Tread 26 Tread pair (main part)
62 Lock Plate 63 Locking Mechanism 70 Pulling Tool 72 Fastening Tool 72B Ratchet Gear 72B Winding Drum 72G Ratchet Claw 73 Wire 74 Hook 80 Fastening Tool 81 Dial (Rotation Operation Unit)
81A Elastic lever 82 Rotating shaft 83A Ratchet gear 84B Winding drum

Claims (3)

After connecting the tire inner ring side and outer ring side of the main body part endlessly, the main body part is tightened by tightening the mutually opposite pulling end parts of the tire outer ring side of the main body part with a tightening tool, and is in close contact with the tire In the anti-skid device for automobile tires,
A lock plate attached to one of the mutually opposite drawing ends;
A ratchet gear, which is attached to the other end of the pulling end and can be rotated from the outside, is rotatably incorporated, and the ratchet gear is allowed to rotate while the ratchet gear is locked to restrict reverse rotation. The ratchet pawl is provided so as to be disengageable from the outside, and the ratchet pawl is provided with a spring member that urges the ratchet gear to be engaged with the ratchet gear. A fastener provided to be rotated by a gear;
A lock mechanism attached to the fastener and capable of locking the lock plate;
A hook that can be hooked to the lock plate;
The hook is attached to the tip, and the wire wound around the winding drum;
An anti-skid device for an automobile tire characterized by comprising: After connecting the tire inner ring side and outer ring side of the main body part endlessly, the main body part is tightened by tightening the mutually opposite pulling end parts of the tire outer ring side of the main body part with a tightening tool, and is in close contact with the tire In the anti-skid device for automobile tires,
A hook that can be hooked to one of the pulling end portions facing each other on the tire outer ring side of the main body portion;
Mounted on the other end of the drawing end, the winding drum is rotatably incorporated, and a rotation operation unit for rotating the winding drum is rotatable and slidable in the axial direction of the rotation shaft The rotation restricting portion is mounted and configured to allow the rotation operation portion or the take-up drum to rotate in the operating posture but restrict the reverse rotation and allow the reverse rotation in the release posture that is slid in the axial direction. With fasteners,
The hook is attached to the tip, and the wire wound around the winding drum;
An anti-skid device for an automobile tire characterized by comprising: A lock plate attached to one of the pulling ends and hooked by the hook; a lock mechanism to which the fastener is attached and locks the lock plate;
The non-slip device for an automobile tire according to claim 2, further comprising:

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