JP5749785B2 - tire chain - Google Patents

Description

  The present invention relates to a tire chain attached to a vehicle tire in order to increase friction between a vehicle and a road surface under winter conditions, and more particularly to a tire chain in which a wheel is not damaged.

  When driving on snowy roads and icy roads, change tires to normal ones, use spike tires, studless tires, etc. that have an anti-slip effect, and attach tire chains to the tires. It is common to prevent slipping.

  In areas where the road surface is always covered with ice and snow in the winter, it is often the case that tires are replaced as described above. It is common to wear.

  The tire chain has a side chain portion provided along a sidewall on the outer side of the tire, a cross chain portion that is connected to the side chain portion and faces the tread of the tire, and is made of a metal chain as a material. There are resin chains and fiber chains. Further, the side chain portion is urged in a direction to reduce the diameter by an elastic member such as a spring.

When a tire chain made of a material having a high hardness such as a metal chain is used, the tire chain and the wheel may slip during running, and the wheel rim may be damaged.
Furthermore, the wheel cap (cover covering the wheel) that protrudes outward from the bead portion of the tire may be damaged or damaged. For this reason, when attaching a tire chain, a wheel cap will be removed using a tool.

  In order to prevent these scratches and breakage, a tire chain is proposed in which a portion in contact with the wheel is made of a plastic injection molded product, and a metal chain is connected to the outer edge of the disc (for example, , See Patent Document 1).

Japanese Patent No. 3526827

  However, in the tire chain described in Patent Document 1, a chain that covers the tread of the tire is connected to the disk. Therefore, since the disk is a member constituting the side chain portion, an urging force in the direction of reducing the diameter acts. Therefore, there is a problem that the disk is required to have strength and the manufacturing cost is increased.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a low-cost tire chain in which the wheel is not damaged.

In order to achieve at least one of the above-described problems, a tire chain reflecting one aspect of the present invention is provided along a sidewall on the outer side of a tire, and a side chain portion that can contact a wheel, the side chain A tire chain main body having a cross chain portion facing the tread of the tire and a portion positioned between the side chain portion and the wheel, and the side chain portion contacts the wheel. anda protective member provided on the side chain portion so as to prevent the contact, the protective member, Ri annular der, further the protective member is a porous plastic molding comprising a plurality of members And a cover covering the porous plastic molded body .

  Other features of the present invention will become more apparent from the following detailed description and accompanying drawings.

According to the present invention,
It has a part located between the side chain part and the wheel, and has a protective member provided on the side chain part so as to prevent the side chain part from coming into contact with the wheel. Not scratched. Furthermore, since the protective member is a separate part from the chain body, the protective member is not required to have strength. Therefore, it can be manufactured at low cost.

  Other effects of the present invention will become more apparent from the following detailed description and accompanying drawings.

It is a perspective view of a tire equipped with a tire chain of an embodiment. It is a perspective view in the state where a protection member was removed in FIG. It is a perspective view of the protection member of FIG. FIG. 4 is a diagram showing a cut surface taken along a cutting line IV-IV in FIG. 3. It is a figure which shows the cut surface in the cutting line VV of FIG. It is a figure which shows the cut surface in the cutting | disconnection line VI-VI of FIG.

  This will be described with reference to the drawings. 1 is a perspective view of a tire equipped with the tire chain of the embodiment, FIG. 2 is a perspective view of a state in which the protective member is removed in FIG. 1, FIG. 3 is a perspective view of the protective member of FIG. 1, and FIG. 4 is a plan view of the protective member, FIG. 4 is a view showing a cut surface taken along the cutting line IV-IV in FIG. 3, FIG. 5 is a view showing a cut surface taken along the cutting line VV in FIG. It is a figure which shows the cut surface in VI-VI.

As shown in FIG. 1, the tire chain 2 of this embodiment includes a tire chain body 1 and a protection member 51.
Here, a tire chain main body is demonstrated using FIG. In the figure, a metal tire chain body 1 includes metal side chain portions 7, 7 'provided along outer and inner sidewalls 5, 5' of the tire 3, and side chain portions 7, 7 '( The side chain 7 'is provided between the tread 9 of the tire 3 and the metal cross chain portion 11 facing the tread 9 of the tire 3.

  Returning to FIG. 1, the side chain portion 7 on the outer side of the tire 3 is biased in the direction of reducing the diameter of the side chain portion 7, and the side chain portions 7, 7 ′ and the cross chain portion 11 are fitted to the tire 3. A biasing means 19 is provided.

  The urging means includes a plurality of resin hooks 13 provided on the side chain portion 7 at predetermined intervals, and an elastic rubber band that is engaged with the hooks 13 and urges the side chain portion 7 in a diameter reducing direction. It consists of 15.

  A protective member 51 is provided on the side chain portion so as to prevent the side chain portion 7 from coming into contact with the wheel 41, having a portion located between the side chain portion 7 and the wheel 41.

Here, the protection member 51 will be described with reference to FIGS.
The protection member 51 according to the present embodiment includes four porous plastic molded bodies 53 and a cover 55 that covers the porous plastic molded bodies 53.

  The plastic molded body 53 has a shape in which a ring is divided at a 90 ° pitch, and the material thereof is foamed polyethylene having elasticity. And the four plastic moldings 53 are arrange | positioned so that a substantially annular shape may be formed.

  The cover 55 is made of nylon 66 having a high melting point, high rigidity, and low water absorption. In the present embodiment, the mesh opening (interval between adjacent warp yarns or adjacent weft yarns) is set to 48 μm or less at which water does not pass, so as to have water repellency.

  As shown in FIGS. 4 to 6, the cover 55 includes an annular first cover main body 57 laminated so as to cover one side of the four porous plastic molded bodies 53 arranged in an annular shape, An annular second cover body which is laminated so as to cover the other side of the four porous plastic molded bodies 53 arranged in an annular shape and wraps around the four porous plastic molded bodies 53 in cooperation with the first cover body 57. 59.

  Further, a first tape 61 is provided so as to cover the outer edge portions of the annular first cover 57 and the second cover 59, and fraying of the outer edge portions of the first cover 57 and the second cover 59 is prevented. A second tape 63 is provided so as to cover the inner edges of the annular first cover 57 and the second cover 59 to prevent the inner edges of the first cover 57 and the second cover 59 from fraying.

Four locking portions 71 are provided on the first cover 57 side so that the protective member 51 can be attached to and detached from the side chain portion 7 of the tire 3.
The locking part 71 of the present embodiment uses a hook-and-loop fastener. Specifically, as shown in FIGS. 3, 4, and 6, the outer surface of the first cover portion 57 of the cover 55 corresponds to the four porous plastic forming bodies 53 disposed therein, A first surface fastener 73 is provided from the outer edge to the inner edge along the radial direction of the ring. The second hook-and-loop fastener 75 is connected to the end portion of the first hook-and-loop fastener 73 on the outer edge side of the cover 55, and is provided so as to extend in the normal direction in the natural state.

  In the present embodiment, the first surface fastener 73 has a loop surface 73a in which small loops are closely arranged on the upper surface. As shown in FIG. 4, the second surface fastener 75 is folded in a U shape so as to be stacked on the first surface fastener 73, and the surface facing the loop surface 73 a of the first surface fastener 73 has a fine key shape. It becomes the hook surface 75a which becomes.

  Therefore, when the loop surface 73a of the first fastener 73 and the hook surface 75a of the second fastener 75 are pressed firmly, the key portion of the hook surface 75a is caught by the loop of the loop surface 73a and sticks by itself. It can be freely attached and peeled off. That is, the first fastener 73 and the second fastener 75 can be coupled / detached many times.

  As shown in FIG. 1, the protection member 51 is located between the side chain portion 7 and the wheel 41, and as shown in FIG. 4, the second fastener 75 cooperates with the side chain portion 7 with the first fastener 73. Thus, the protective member 51 is attached to the tire 3.

According to the above configuration, the following effects can be obtained.
(1) Since the protective member 51 having a portion located between the side chain portion 7 and the wheel 41 is provided, the wheel 41 is not damaged.

(2) Since the protection member 51 is a separate part from the chain body 1, the protection member 51 is not required to have strength. Therefore, it can be manufactured at low cost.
(3) The material of the plastic molding 53 of the protection member 51 is elastic and lightweight foamed polyethylene. The plastic molded body 53 is elastically deformed by the side chain portion 7 biased in the direction of reducing the diameter, and the protective member 51 is pressed against the sidewall 5 of the tire 3 by the elastic repulsive force. The chain body 1 is prevented from being displaced.

 (4) The material of the cover 55 (the first cover 57 and the second cover 59) of the protection member 51 is nylon 66 processed to have water repellency. Therefore, the protective member 51 does not contain water and increases in weight during traveling, so that it does not leave the tire 3 due to centrifugal force.

 (5) Since the protective member 51 includes the four porous plastic molded bodies 53 and the cover 55 that covers the porous plastic molded bodies 53, the protective member 51 can be folded in four and can be stored compactly.

Other embodiments are as follows.
(1) The plastic molded body 53 may be an annular one-piece.
(2) The detachable locking portion is not limited to the hook-and-loop fastener, and for example, a snap button or the like may be used.

 (3) In this embodiment, the cover 55 is made of nylon 66 and has an opening of 48 μm or less so as to have water repellency. However, nylon is a material that can be easily subjected to water-repellent coating. Even if it gives, water repellency can be ensured.

 (3) The material of the cover 55 is not limited to nylon 66, but may be nylon 6 instead. In addition, polyester or polyurethane having a water-repellent coating may be used.

 (4) The material of the plastic molded body 53 is not limited to the foamed polyethylene, and there is foamed polystyrene.

DESCRIPTION OF SYMBOLS 1 Tire chain main body 3 Tire 5, 5 'Side wall 7, 7' Side chain part 9 Tread 11 Cross chain part 41 Wheel 51 Protection member

Claims (4)

A tire chain main body having a cross chain portion which is provided along a sidewall on the outer side of the tire and which can be brought into contact with the wheel, and which is connected to the side chain portion and which faces the tread of the tire;
A protective member provided on the side chain part so as to prevent the side chain part from coming into contact with the wheel, having a portion located between the side chain part and the wheel;
Have
The protective member is
Annular der is,
Furthermore, the protective member is
A porous plastic molding comprising a plurality of members;
A tire chain comprising a cover covering the porous plastic molded body . The protective member is
The tire chain according to claim 1, wherein the tire chain is detachable from the side chain portion. The porous plastic molded body is
The tire chain according to claim 1 or 2, wherein the tire chain is one of expanded polystyrene and expanded polyethylene . The tire chain according to any one of claims 1 to 3 , wherein the protection member has water resistance that hardly absorbs water .

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