JPH01208208A - Tire slip preventive device - Google Patents

Abstract

PURPOSE:To provide possibility of fitting to an existing wheel by furnishing a support to support the device body wherein an arm enclosing the tire periphery extends radially from a boss, pinching the end of the rim of the wheel, and mounting on the wheel. CONSTITUTION:A support 30 strikes in a fitting 52 with a hammer, etc., pinches a flange 28C of a rim 28B, and mounts on a wheel 28. Because the rim 28B is standardized, this mounting requires no adjustment even with different rim widths as long as the wheel dia. is the same, and also the amount of protrusion of a ring 54 will be a specified value regardless of the amount of offsetting, etc. A through hole 18 in a boss 12 is fitted on the base 54C of the ring 54, and the device body 10 is fitted. Thereby an arm 14 encloses the tread of the tire 36 and exerts the anti-slip function. This enables mounting to existing wheel easily.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tire anti-slip device, and more specifically, an arm portion extending radially from a boss portion in which a through hole is formed covers the outer peripheral portion of the tire. and a support member that is attached to a wheel and into which the boss portion is fitted to support the device body.

[Prior Art] As this type of device, those proposed in Japanese Patent Application Laid-open Nos. 57-172805 and 60-56609 are known.

In the device proposed above, the device body including the boss portion and the arm portion is supported by the wheel via the support member. The support member is attached to the wheel using a combination of plastic hubs and hub bolts that attach the wheel to the axle.

However, in the support member of the conventional device described above, the hub is collinear with the wheel, so if the hub were to break, there was a problem in that it would affect the mounting condition of the wheel.

In addition, it is necessary to adjust the amount of protrusion using special bolts and nuts according to the wheel rim width, offset amount, etc., which makes the work complicated, and if this adjustment is inappropriate, the arm part of the device body may There was a problem in that the device did not fit into the tread portion of the device, which could lead to early damage to the device body.

Therefore, the present applicant has developed a tire slip prevention device in which the support member does not affect the mounting state of the wheel on the vehicle and does not require adjustment, and has already filed a patent application No. 62-3047.
The application is currently being filed under No. 59 etc.

In this tire slip prevention device, as shown in FIG.
8 by welding or the like to solve the above problem.

However, in this tire slip prevention device, the support member 3
It is actually difficult to attach the 0 to the existing wheel 28 later, and the support member 30 has no choice but to be supplied as a dedicated wheel to which the support member 30 is attached in advance.

Further, since the support member 30 is fixed by welding or the like, it is impossible to remove the support member 30 from the wheel 28 even in the summer when the tire anti-slip device is unnecessary.

[Problems to be Solved by the Invention] In view of the above, the present invention provides that the support member does not affect the state of attachment of the wheel to the vehicle, does not require adjustment, and can be attached to an existing wheel later. It is an object of the present invention to provide a tire slip prevention device that can be easily installed and also removed.

[Means for Solving the Problems] The present invention includes a main body of a device in which arm portions extending radially from a boss portion in which a through hole is formed cover the outer peripheral portion of the tire, and a device body that is attached to a wheel and into which the boss portion is fitted. In the tire slip prevention device, the tire slip prevention device includes a support member that supports a main body of the device, and the support member is attached to the wheel while holding the end of the rim.

[Function] In the present invention having the above configuration, the support member is attached to the wheel at the end of the rim regardless of the attachment of the wheel to the vehicle, so it does not affect the attachment state of the wheel to the vehicle.

Further, since the amount of protrusion of the support member is set based on the end of the rim, there is no need for adjustment.

Further, since the support member is attached to the wheel by holding the end of the rim, it can be easily attached to an existing wheel and can also be removed.

[Embodiment] Figs. 1 to 4 show a first embodiment of a tire slip prevention device according to the present invention.

As shown in FIGS. 1 and 2, the device main body 10 includes a boss 12 made of synthetic resin or metal such as aluminum, and a plurality of bosses (for example, 6 to IO, in this embodiment, 8 bosses made of synthetic resin).
A book arm 14 is provided. As specific examples of these synthetic resin materials, thermosetting sebum such as FRP is used for the boss 12, and thermoplastic elastomer such as thermoplastic urethane or thermoplastic rubber, or ABS resin and thermoplastic resin is used for the arm 14. A urethane blend product is used.

A through hole 18 is formed in the center of the disk portion 16 in the boss 12, and eight arm connecting portions (corresponding to the number of arms 14) protrude radially at equal intervals around the disk portion 16. 20 are integrally formed. One end of the arm 14 is connected to the arm connecting portion 20 via a bolt 22 and a nut 23, the intermediate portion is bent, and the free end extends in the axial direction of the boss 12. A spike pin 24 is provided protruding from the outer peripheral surface of the free end side end of the arm 14, and a protrusion 26 is integrally formed on the inner peripheral surface.

The arm 14 can be manually rotated about the bolt 22 in the direction of the arrow in FIG. 1.

The support member 30 attached to the wheel 28 to support the device body 10 on the wheel 28 includes a support member body 50 and a fastener 52, as also shown in FIG. The support member main body 50 is formed from a single plate material such as a steel plate, and includes a perfectly circular annular portion 54 with a substantially J-shaped cross section. In the embodiment, six arm portions 56 extend radially.

The outer diameter of the long side flange 1ff154A is set larger than the diameter of the through hole 18 formed in the disk portion 16 of the boss 12, and the outer diameter of the short side flange 54B is set larger than the diameter of the through hole 18. is also set small. Further, a base portion 54 connecting the flange portion 54A and the flange portion 54B
A rubber belt 33 extending from the root of the flange portion 54A to the vicinity of the root of the flange portion 54B is attached to the outer peripheral surface of C over the entire circumference.

As shown in detail in FIG. 4, the fastener 52 is formed by forming a plate material such as a spring steel plate into a cylindrical shape, and forming the opposing ends into a sawtooth shape, and is welded or otherwise attached to the tip of the arm portion 56. It is fixed by. The fastener 52 firmly holds the flange 28C located at the end of the rim 28B of the wheel 28 by its own spring property.

In the support member 30 attached to the wheel 28 in this manner, the annular center of the annular portion 54 is aligned with the axis of the wheel 28.

The retainer 32 that prevents the device main body 10 from coming off the support member 30 is made by bending a wire rod with spring characteristics such as spring round steel into an annular shape, and a U-shaped protrusion 32B is formed from an arcuate general portion 32A. A plurality of protruding annular bodies (six in this embodiment) are formed at equal intervals. This retainer 32
The radius of curvature of the general portion 32A is the base portion 102 of the support member 30.
The radius of curvature of the outer circumferential surface of D is approximately equal to that of the outer circumferential surface of D, and both bent ends are connected to each other via a rubber ring 34. At this time, the ends of the retainer 32 do not come into contact with each other, and the rubber ring 34 uses elastic force to urge the ends toward each other. Further, the protrusion 32B has a maximum distance from the center of the retainer 32 that corresponds to the through hole 1 formed in the disk portion 16 of the boss 12.
The radius dimension is set larger than the radius dimension of No. 8.

The attachment/detachment procedure and the like of this embodiment will be explained below.

Attachment of the support member 30 to the wheel 28 is completed by hitting the fastener 52 with a hammer or the like to sandwich the flange 28C of the rim 28B. Since the rim 28B has a standardized shape, it can be attached to all wheels 28 without adjustment, regardless of differences in rim width, etc., as long as the wheel diameter is the same. Since the amount of protrusion is set with reference to the end of the rim 28B, the amount of protrusion will be a predetermined value regardless of differences in the offset 1 and the like. Furthermore, the annular center of the annular portion 54 coincides with the axis of the wheel 28 without any positioning work.

If a small hole or a recess is formed in the portion of the flange 28C that is held by the fastener 52, the serrated portion of the fastener 52 will fit there, so that the support member 30 will be more firmly attached.

The device main body 10 is attached to the support member 30 by aligning the boss 12 with the annular portion 54 so that the through hole 18 of the boss 12 faces the annular portion 54.
This is done by fitting the base portion 54C of No. 4. On this occasion,
The tires 36 mounted on the wheels 28 are crushed by the weight of the vehicle and are in contact with the ground over a wide area. Therefore, if two of the eight arms 14 that are adjacent to each other are left as they are, the ends on the free end side are difficult to arrange on the tread portion of the tire 36 at a predetermined position. Therefore, the two bolts are arranged with the ground-contacting part of the tire 36 in between, and both are rotated about the bolt 22 in a direction away from each other, and are placed on the tread part at a position shifted from a predetermined position in the circumferential direction. will be placed in

The annular portion 54 helitainer 32 is then attached.

This attachment is performed by expanding the diameter of the retainer 32 and passing it through the flange portion 54B, and then connecting both ends with the rubber ring 34. As a result, the retainer 32
A presses against the base 54C, and the protrusion 32B contacts the flange 54B, making it impossible to remove it from the annular portion 54.

The mounting operation is completed as described above, and the disk portion 16 of the boss 12 comes into contact with the protrusion 32B of the retainer 32 to prevent the device main body 10 from being pulled out from the annular portion 54, and the flange portion 54A
Movement toward the wheel 28 side is restricted by coming into contact with the wheel 28 .

Shortly after the vehicle starts running, the two arms 14 that have been rotated are naturally rotated in the opposite direction and placed at a predetermined position.

In this state, the boss 12 can freely move in the radial direction at least by a distance equal to the diameter of the through hole 18 minus the outer diameter of the rubber belt 33.

While the vehicle is running, the arm 14 is rotated together with the tire 36 due to the large frictional force with the tread portion of the tire 36 since the protrusion 26 is formed on the free end side of the arm 14 .

The arm 14 that is in contact with the ground is elastically bent in order to absorb the tire 36 being crushed and reduced in diameter by the weight of the vehicle, and at the same time the boss 12 moves radially inward. be done. As a result, the device main body 10 moves elliptically around the axle while the vehicle is running, and the surface of the boss 12 facing the through hole 18 repeatedly collides with the annular portion 54.
Since it contacts the rubber belt 33 and does not directly contact the base 54C of the metal surface, the impact is absorbed and the generation of noise is suppressed.

The device main body 10 can be easily uninstalled by reversing the installation procedure. Even if the support member 30 remains attached to the wheel 28 after the device main body 10 is removed, it does not affect the running of the vehicle, and it does not affect the attachment state of the wheel 28 at all, and even when the device main body 10 is removed. In this state, large external forces that would affect durability will not act on it. Therefore, no problem will occur even if the wheel 28 to which the support member 30 is attached is used outside the snowfall period, but if necessary, the fastener 52 can be attached to the flange 28B of the rim 28B.
The support member 30 can be easily removed from the wheel 28 by pulling it out from 8C. It can also be reattached as described above.

In the above embodiment, the outer diameter of the short side flange portion 54B of the annular portion 54 of the support member 30 is set to be smaller than the diameter of the through hole 18 formed in the disk portion 16 of the boss 12. In the case of a structure in which the bosses 12 are separated in the circumferential direction, the retainer 32 can be made unnecessary by setting the diameter to be larger than the diameter of the through hole 18.

Further, in the above embodiment, the retainer 32 made of steel wire was used in combination with the rubber ring 34, but these can be implemented in various other configurations, and the point is that the retainer 32 made of steel wire is used in combination with the rubber ring 34, but these can be implemented in various other configurations. Any configuration is sufficient as long as the main body 10 does not separate from the support member 30, so the annular portion 54
It is also possible to eliminate the flange portion 54B.

Further, in this embodiment, the arm 14 is rotatably attached to the boss 12, but it may be fixedly fixed using a plurality of bottles or the like, or both may be integrally molded.

Further, in the above embodiment, the fastener 52 is formed from a single plate such as a spring steel plate, but as shown in FIG. 5, it may be formed by combining two plates such as a spring steel plate. In the fastener 52 shown in FIG. 5, two spring steel plates are joined together by a rivet 58, and the rivet 58 further fixes the fastener 52 to the arm portion 56 of the support member main body 50.

FIG. 6 shows a second embodiment of the invention.

This embodiment differs from the first embodiment in that the longitudinal intermediate portion of the arm portion 56 of the support member 30 is formed of a rubber material 60. That is, the arm portion 56 of the first embodiment
The structure is such that the middle part in the longitudinal direction is cut out and the remaining part is connected with a rubber material 60. In this embodiment, the rubber material 60 is bonded to other parts of the arm portion 56 by adhesive.

In this embodiment, the elasticity of the rubber material 60 provides a unique effect not found in the first embodiment. That is, in the first embodiment, since the arm portion 56 has high rigidity, the annular portion 54 is attached to the wheel 28.
However, in this embodiment, the elasticity of the rubber material 60 allows the annular portion 54 to be displaced in the axial direction and radial direction of the wheel 28, so that the following effects occur.

First of all, in the first embodiment, the device main body 10 is
In order to improve workability when attaching to 0, through hole 1
8 needs to be set considerably larger than the diameter of the flange portion 54B. For this reason, the device body lO
The clearance C (see FIG. 2) in the state in which the seat is attached to the support member 30 becomes large, which increases vibration and noise, which is disadvantageous in terms of riding comfort.

On the other hand, in this embodiment, the elasticity of the rubber material 60 allows the annular portion 5 to
4 is movable in the radial direction, good installation workability can be ensured even when the clearance C is set to be small, and therefore, the clearance C can be made small to improve riding comfort.

Further, in the first embodiment, if the clearance C was set to be small, the installed arm 14 would be bent greatly, which was disadvantageous in terms of durability, but in the case of the present embodiment, the clearance C is small. As a setting, the annular portion 54 is displaced upward to reduce the degree of bending of the arm 14, and
Since it prevents sudden bending, it is also advantageous in terms of durability.

Second, when a side force is applied during cornering, the device main body 10 moves in the axial direction of the support member 30, so there is a risk that the disk portion 16 will slide against the retainer 32 and be worn out.

On the other hand, in this embodiment, the disk portion 16 is attached to the retainer 3.
2, the rubber material 60 is elastically deformed and the annular portion 54 is pressed.
is displaced in the direction of the pressing force, the pressing force is relaxed and no wear that would impair the durability of the disk portion 16 occurs.

Thirdly, since the load that the support member 30 must support is reduced by the action of the rubber material 60, the strength of the support member 30 can be lowered, and the thickness of the steel plate or the like can be made thinner, resulting in weight reduction. This makes it possible to achieve good results in terms of driving fuel efficiency, etc.

Fourth, the support member 30 is a disc 28A of the wheel 28.
Even if the rubber material 60 comes into contact with the protrusion 28D of the flange 28D, the rubber material 60 elastically deforms and allows the support member 30 to be attached. This improves adaptability to wheels of various shapes.

Fifth, the support member 30 from which the device main body 10 is removed
Even if the support member 30 comes into contact with a curb or the like, the rubber material 60 cushions the impact, thereby preventing the support member 30 from being damaged or deformed.

FIG. 7 shows a third embodiment of the invention.

This embodiment differs from the second embodiment in that the annular portion 54 of the support member 30 is made of synthetic resin, ceramic, etc., and can be integrally molded using a mold. The effect of the material 60 is similar to that of the second embodiment.

FIG. 8 shows a fourth embodiment of the invention.

This embodiment differs from the second embodiment in that the annular portion 5
4 is a flange portion 54A on the long side and a flange portion 54 on the short side.
B is formed of a metal plate such as a steel plate, and the base 54C is formed of a rubber material, and these are bonded together.

In this embodiment as well, the effect of the rubber material 60 is similar to that of the second embodiment.

Further, since the base portion 54C is made of a rubber material, the rubber belt 33 in the first to third embodiments is not required, and the device main body 10 is made of an elastic body that is thicker than the rubber belt 33.
The shock absorption effect is improved because the load is applied to the shock absorber.

FIG. 9 shows a fifth embodiment of the invention.

This embodiment differs from the fourth embodiment in that the long side flange portion 54A is replaced with a rubber material and is integrated with the rubber material 60 forming the arm portion 56 and the rubber material forming the base portion 54C. This produces the same effect as the fourth embodiment.

A sixth embodiment of the invention is shown in FIG. 1O. This embodiment differs from the fifth embodiment in that the flange portion 54B on the short side is also made of rubber material, and the support member main body 50 is made of rubber material except for the tip of the arm portion 56. Therefore, the same effect as in the fifth embodiment can be achieved.

FIG. 11 shows an application example of the second embodiment, in which the tip of the arm portion 56 is fixed to the rim 28B of the wheel 28 by welding. In the case of this device as well, the effect similar to that described above is produced by the action of the rubber material 60.

[Effects of the Invention] As explained above, in the tire slip prevention device according to the present invention, since the support member is attached to the wheel while holding the rim end, it does not affect the attachment state of the wheel to the vehicle. There is no need for adjustment, and the support member can be easily attached to and removed from an existing wheel later.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing a first embodiment of the tire slip prevention device according to the present invention, Fig. 2 is a sectional view showing the installed state of the first embodiment, and Fig. 3 is a support member of the first embodiment. 4 is a perspective view of the fastener in the first embodiment, FIG. 5 is a side view showing a modified example of the fastener, and FIG. 6 is a second embodiment of the present invention. FIG. 7 is a sectional view showing a third embodiment of the present invention corresponding to FIG. 2, and FIG. 8 is a sectional view showing a fourth embodiment of the present invention in a second 9 is a sectional view showing a fifth embodiment of the present invention corresponding to FIG. 2, and FIG. 10 is a sectional view showing a sixth embodiment of the present invention corresponding to FIG. 2. 11 is a sectional view showing an application example of the second embodiment corresponding to FIG. 6, and FIG. 12 is a sectional view of a tire slip prevention device previously proposed by the applicant. DESCRIPTION OF SYMBOLS 10... Device body, 12... Boss, 14... Arm, 18... Through hole, 28... Wheel, 28B... Rim, 28C... Flange, 30... Support member , 32... Retainer, 36... Tire, 50... Support member main body, 52... Fastener.

Claims (1)

[Claims] (1) A device main body whose arm portion extends radially from a boss portion in which a through hole is formed and covers the outer peripheral portion of the tire, and a support member that is attached to the wheel and into which the boss portion is fitted to support the device main body. What is claimed is: 1. A tire slip prevention device comprising: a support member that is attached to a wheel while holding an end of a rim;