JP2532732Y2 - Tire slippers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a tire slipper used by being attached to a tire of an automobile.

(Prior art) In general, a cantilever type tire stopper that can be easily attached and detached and that can be quickly mounted is used to ensure safe traveling such as prevention of tire slip when driving on a frozen road or a snowy road. Have been. As this kind of anti-skid device, a plurality of arm members are radially extended from a fixing portion which is fixed to a side surface of a vehicle wheel, and a ladder-like ground contact is provided in which a tip of the arm member is bent to contact a tread surface of a tire. It is known that the arm member is formed of a high-rigidity synthetic resin material (see JP-A-63-71401). Further, as shown in FIG. 7, there has been proposed a tire slipper in which an endless outer peripheral band B connecting the arms A to each other extending radially from a mounting member F is fixed to an end of each arm A (see FIG. 7). See JP-A-2-151511). As shown in FIG. 8, these tire slippers are attached to the wheels W of the automobile from outside the tires T using wheel fixing nuts.

(Problem to be Solved by the Invention) By the way, in the conventional example shown in FIG. 7, when the vehicle is mounted on wheels W and the vehicle runs, when the vehicle runs on a curve, as shown in FIG. A is deformed, and the ground contact portion and the outer peripheral band B are instantaneously detached from the tread portion TT of the tire T, so that there is a problem that the slip prevention function of the tire T cannot be exhibited.

The present invention has been made in view of the above-described circumstances, and an object thereof is to prevent a tire from coming off a tread surface of a tire at the time of turning of a car and to provide a tire slipper capable of fully exerting its function. To provide.

(Means for Solving the Problems) In the present invention, the following technical measures were taken to achieve the above object.

That is, in the present invention, a plurality of arms 3 are radially extended from a mounting member 2 which is detachably mounted concentrically with the wheels 8 on a side surface of a wheel 8 of an automobile, and the tip of the arms 3 is bent to bend the tire. In a tire slipper having a grounding portion 3a that is in contact with the tread surface TT of the T and a plurality of grounding rings 5a and 5b fixed to the inner peripheral side of the grounding portion 3a, the tip of the grounding portion 3a (inside the tire) ) Set the circumference of the side grounding ring 5a to the arm 3 bending side (tire outer side) grounding ring 5b.
It is characterized by being shorter than the circumference.

(Operation) According to the tire slipper of claim (1) of the present invention,
When the slip stopper is mounted on the tire, as shown in FIG. 1, the distance between the grounding ring 5a on the inner side of the tire and the tread surface TT of the tire T is equal to the distance between the grounding ring 5b on the outer side of the tire and the tread surface TT. When the car is running,
Since the ground contact portion 3a of the arm 3 always moves inward of the tire (the direction indicated by the arrow (a) in FIG. 1), the direction in which the ground contact portion 3a shifts to the outside of the tire T when the vehicle turns. To the tread surface TT.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIGS. 1 and 2 show a tire slipper 1 according to a first embodiment of the present invention.
A plurality of arms 3 extending radially from the outer periphery of the arm 3 and having bent ends to form grounding portions 3a, and a plurality of grounding rings 5a fixed to the inner peripheral side of the grounding portion 3a of each arm 3. 5b.

The mounting member 2 is made of metal or synthetic resin and has a fixed disk.
2a and a mounting ring 2b mounted on the disk 2a. An outer peripheral portion of the fixed disk 2a is extended outward to form a fitting flange portion 6, and an inner peripheral portion has a Dharma-shaped mounting hole. 7 is provided corresponding to the mounting wheel nut 9 of the wheel 8. The inner surface of the inner peripheral portion of the mounting ring 2b is a fixed disk.
2a is rotatably mounted via a holding ring 10, a bolt 11, and a nut 12, and an arm 3 is fixed to an outer peripheral surface by a stud 13 or the like. Therefore, the fixed disk 2a and the mounting ring 2b are relatively rotatable, and the ground portion 3a and the ground ring
When excessive torque is applied to 5a and 5b, even if the tires T rotate, they slide against each other and no excessive force acts on the tire slipper 1, thereby increasing the durability.

The wheel nut 9 is different from a commonly used cap nut in that a cap pin 9b provided with a capping head 9a is integrally formed with the cap nut, and a mounting hole 7 is formed in the cap pin 9b. Is fixed, the fixed disk 2a is fixed by a stopper (not shown) provided on the fixed disk 2a so as not to rotate with respect to the wheel 8, and is stopped by the locking head 9a.

The arm 3 is made of a rigid elastic body, for example, a synthetic resin such as urethane resin, rubber or a rubber compound, or a material in which a core material such as various fiber layers, woven fabric, metal wire, or thin spring steel plate is embedded in these substances. Is done. The arm 3 is composed of a high-rigidity elastic body and a low-rigidity elastic body, which are arranged alternately and mounted on the tire T without using a jack. You may make it detachable. In addition, a spike pin 14 is embedded on the outer surface of the ground portion 3a of each arm 3.

The grounding rings 5a and 5b are made of an endless band made of an elastic material such as rubber or synthetic resin, and the circumferential length of the ring 5a on the tip side of the grounding portion 3a, that is, on the tire inner side, is the arm 3 bending side, that is, on the tire outer side. Ring 5b is shorter than the circumference of
The grounding portions 3a of 5a and 5b are connected to each other by a connecting band 4 to form a lattice, and are integrally fixed to the inner surface of the grounding portion 3a of each arm 3 by high frequency welding means or the like. It should be noted that another grounding ring can be provided between the grounding rings 5a and 5b to form a three- or four-round structure, the circumference of which is the minimum for the tire inner grounding ring 5a and the maximum for the tire outer grounding ring 5b. What is necessary is just to select.

In the above embodiment, when the tire slip stopper 1 is mounted on the tire T, as shown in FIG. 1, the distance between the grounding ring 5a on the inner side of the tire and the tread surface TT of the tire T is changed to the grounding ring on the outer side of the tire. It becomes smaller than the distance between 5b and the tread surface TT. That is, since the circumference of the grounding ring 5a is shorter than the circumference of the grounding ring 5b, an interval difference is generated by the difference between the radii of the two rings 5a and 5b. Then, when the car is run, the arm 3
Is always on the tire inner side (arrow (a) in FIG. 1).
When the vehicle turns, the ground contact portion 3a is prevented from shifting to the outside of the tire T, and the ground contact portion 3a of the tire slip stopper 1 is moved to the tread surface TT. , And the tire slip prevention function can be sufficiently exhibited.

3 to 6 show a comparative example.
The tire slip stopper 1 is different from the tire slip stopper 1 in that the ground rings 5a and 5b have the same circumference, and an intermediate portion between an attachment portion and a bent portion of each adjacent arm 3 is intermittently or continuously connected by a side bar 15, Other configurations are the same. The sidebar 15
Has a band shape made of a synthetic resin or a metal material. In FIG. 4, the side bar 15 has a ring shape, and the arms 3 are continuously connected. In FIG. 5, each arm 3 has an arc-shaped side surface. It is intermittently connected by a bar 15.

The side bar 15 shown in FIG. 6 has a Y-shape,
The other end of each arm 3 is connected to the grounding ring 5b or the continuous band 4 on the outer side of the tire while connecting between the bent portion and the mounting portion.

In the above comparative example, when the non-slip device 1 is mounted on the tire T, the circumferential lengths of the grounding rings 5a, 5b are the same. Therefore, as shown in FIG. The distance from the tread surface TT is the same.

Therefore, when the vehicle is turned while traveling, the adjacent arms 3 are connected to each other continuously or intermittently by the side bar 15 to increase the rigidity. , Are restrained by the side bar 15 and the adjacent arm 3, and the deformation of the arm 3 is suppressed. Therefore, the ground contact portion 3 a does not deviate from the tread surface TT of the tire T, and thus does not come off the tire T, and The slip prevention function can be sufficiently exhibited.

In the comparative example, the number of grounding rings can be increased or decreased.

The present invention is not limited to the above embodiment. For example, the mounting member 2 can be formed by integrally forming the fixed disk 2a and the mounting ring 2b.

(Effect of the Invention) As described above, the tire slip stopper according to claim (1) of the present invention includes a plurality of mounting members 2 which are detachably mounted on the side surface of the vehicle wheel 8 concentrically with the wheel 8. Arm 3 is extended radially, and the tip of the arm 3 is bent to form a grounding portion 3a that comes into contact with the tread surface TT of the tire T.
In the tire slipper having a plurality of grounding rings 5a and 5b fixed to the inner peripheral side of 3a, the circumferential length of the grounding ring 5a on the tip end (inside of the tire) of the grounding portion 3a is set to the arm 3 bending side (tire). Outer side) Ground ring 5b
Is smaller than the circumference of the tire T, so that when the car turns, the ground contact portion 3a
The tire slip prevention function can be sufficiently exhibited without deviating from the TT, and the durability of the tire slip stopper can be increased.

[Brief description of the drawings]

1 and 2 are an enlarged sectional view and a perspective view of a main part showing an embodiment of the present invention described in claim (1). FIGS. 3 to 6 show comparative examples of the present invention. 3 is an enlarged cross-sectional view of a main part, FIGS. 4 and 5 are overall perspective views, FIG. 6 is an overall perspective view of still another comparative example, and FIGS. 7 to 9 show a conventional example. FIG. 8 is an overall perspective view, FIG. 8 is an explanatory view of a mounted state on a tire, and FIG. 9 is an explanatory view of an arm deformed state when the vehicle turns. 1 ... tire slipper, 2 ... mounting member, 3 ... arm,
3a: grounding section, 5a, 5b: grounding ring, 8: wheel, 15
... sidebar, T ... tire, TT ... Tread surface.

Claims (1)

(57) [Scope of request for utility model registration] An attachment member (2) is detachably attached to a side surface of a bicycle wheel (8), and a plurality of arms (3) extend radially from the attachment member (2). The tip of the tire is bent to form a grounding portion (3a) that comes into contact with the tread surface (TT) of the tire (T), and a plurality of grounding rings (5a) (5b) are fixed to the inner peripheral side of the grounding portion (3a). In the tire anti-skid device, a tip-side (inside of the tire) side contact ring 5a of the contact portion (3a) is provided.
Wherein the circumference of the tire is smaller than the circumference of the arm (3) bent side (tire outer side) ground ring (5b).