JP2548795Y2 - Anti-slip net spike fittings for tires - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a spike metal fitting for a non-slip net for a tire, and more particularly, to an improvement in a spike metal fitting which is bent at both ends and fastened to a mesh intersection of a non-slip net main body.

[0002]

2. Description of the Related Art Conventionally, a spike metal fitting of this type which is fastened to a mesh intersection of a non-slip net body has a flat surface and a steel material formed in a belt-like plate is bent into a U-shape. Both ends were bent inwardly and fastened to the mesh intersection of the anti-slip net body to prevent slipping on a frozen road surface. But,
The above-described conventional spike fitting has a flat grounding surface, so that there is room for improvement in the grip on a frozen road surface.

[0003]

DISCLOSURE OF THE INVENTION The present invention has been made in view of such problems of the prior art, and a first object of the present invention is to provide a spike having a hook on the grounding surface side. The purpose is to provide a metal fitting to improve grip on a frozen road surface. A second object of the present invention is to increase the wear resistance of the contact surface.

[0004]

In order to achieve the above object, a spike fitting of the present invention is formed by bending a strip-shaped steel plate into a U-shape.
The back side of the main body comes into contact with the net
Back of the net at the intersection of the antiskid net for tires
Anti-slip net for tires that can be bent by bending and tightening
In the spike metal fitting of the above,
Forming a groove over the entire length of the tool body in the length direction, and
Do not quench the grounding surface on the front side of the bracket body.
Characterized in that that.

[0005]

According to the technical means described above, a non- slip net book is provided.
The spike fitting fastened to the mesh intersection of the body
The upper edge of the opening of the concave groove over the entire length in the longitudinal direction is the edge
And the edge faces the road surface and bites into the frozen road surface.
Improve the grip power. In addition, the table
By quenching the grounding surface part on the surface side,
Increased wear resistance, durability of the bracket body and the edge
Of the grip force for a long period of time
Can be maintained and the service life of the spike fitting itself
Also improve . In addition, the metal fittings are non-slip tires
Winding and bending at the intersection of the net from the back side and fastened
Therefore, quenching the entire bracket body
There is a risk of damage at the bent part when attaching to
By limiting the part to be processed to the ground surface part,
The effect of improving the durability can be obtained without incurring such inconveniences.
Can be

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 shows a spike fitting A of the present invention shown in FIG.
Are fixed to predetermined mesh intersections a1... Of the non-slip net main body a. The non-slip net main body a is conventionally well-known, and its mesh shape is not limited to the illustrated rhombus shape, but may be any mesh shape such as a rectangular shape, for example.

The spike fitting A is, for example, 300 to 450
A band-shaped metal fitting body 1 made of a steel material having a hardness of about HV.
Is bent so as to form a front U-shape (see the imaginary line in FIG. 1), and a concave groove portion 2 is provided substantially at the center in the width direction of the surface 10 of the metal fitting body 1 in the longitudinal direction of the surface 10. The spike fitting A is located at the intermediate portion 1 of the fitting main body 1.
The back surface 11 of b is opposed to the back surface (the tire-facing surface of the non-slip net main body a) a10 of the mesh intersection portion a1 and the metal fitting main body 1 is set so that the groove 2 is orthogonal to the longitudinal direction of the non-slip net main body a. Both ends 1a, 1a of the metal fitting body 1 protruding toward the surface (ground surface of the non-slip net main body a) a11 of the mesh crossing part a1 are set inward in the mesh crossing part a1. It is bent (see the solid line in FIG. 1) and fastened to the mesh intersection a1 as shown in FIGS.

Then, the surface 10 of the both ends 1a, 1a is
The side is the ground surface side 3 facing the road surface in use, and the upper edge of the concave groove 2 on the ground surface side 3 is the edge 4. Therefore, if the anti-slip net B on which the spikes A, A... Are tightened is wound around the tire and the vehicle runs, the edges 4, 4,... Of the spikes A, A. Grip power becomes stronger.

Both ends 1a, 1a of the metal fitting body 1
Surface 10 side, that is, the surface of the grounding surface side 3 of the spike fitting A is subjected to induction hardening to have a hardness of 500 to 1 after hardening.
000HV or more. Therefore, the abrasion resistance of the surface of the grounding surface side 3, in other words, the periphery of the concave groove portion 2 is enhanced, and as a result, the durability of the metal fitting body 1 is improved. The above-mentioned induction hardening is carried out by oblique portions (20) in FIGS. 6 and 7, more specifically, the surface 10 of both ends 1a, 1a of the metal fitting body 1.
When fastening the metal fitting body 1 in substantially the entire area on the side and in the state of the imaginary line in FIG. 1 to the mesh intersection a1 of the non-slip net main body a (both ends 1a, 1a of the metal fitting body 1 7 (a), (b) or (c) is applied to a portion excluding a portion 1c where bending stress is applied during bending. That is, in FIG. 7A, the depth is the same from the surface of the flat portion 1a 'and the concave groove 2 at both ends 1a, and in FIG. 7B, the surface is substantially the same as the concave groove 2 from the surface of the flat portion 1a'. In FIG. 7C, induction hardening is performed from the surface of the flat portion 1a 'to a depth greater than the depth of the concave portion 2. In the present invention, the depth of the induction hardening is not limited to the depths shown in FIGS. 7A to 7C, but the surface of the groove 2 is more worn than the surface of the flat portion 1a '. 7 (b), since it is difficult to perform the process (the surface of the groove 2 does not directly contact the road surface).
Further, it is desirable to set the depth as shown in FIG.

Further, in the above example, the concave groove portion 2 provided on the surface 10 of the metal fitting body 1 has been described as a single groove as shown in the figure, but a plurality of two, three,... It is preferable that a large number of edges are provided because the grip effect is improved, and the groove 2 may be formed in a separate shape instead of a continuous shape. The cross-sectional shape of the groove 2 is not limited to the U-shape shown in the figure, but may be V-shape, U-shape, or the like.

Further, in the spike metal member A, the intermediate portion 1b of the metal member body 1 is opposed to the surface a11 of the mesh crossing portion a1 (the ground surface of the non-slip net main body a), and the concave groove portion 2 is formed in the non-slip net. The metal fitting main body 1 is set in a fitting manner on the mesh intersection a1 so as to be orthogonal to the longitudinal direction of the main body a, and both ends 1a, 1a protruding toward the back surface a10 of the mesh intersection a1 are both bent inward. May be fastened to the mesh intersection a1. In this case, the surface 10 side of the intermediate portion 1b becomes the ground surface side 3 facing the road surface in use. Therefore, as shown in FIG. 8, it goes without saying that the ground surface side 3 is subjected to the induction hardening as described above. No.

As shown in FIG. 9, both ends 1a, 1a and intermediate portion 1b are subjected to the above-described induction hardening on both ends 1a, 1a of metal fitting body 1 and surface 10 of intermediate portion 1b.
Can be made to correspond to each surface 10 side as the ground plane side 3. In this case, too, it goes without saying that the induction hardening is performed except for locations where bending stress is applied when the metal fitting body 1 is fastened to the non-slip net body a.

[0013]

[Effect of the Invention] The present invention extends over the entire length of the front surface of the bracket body.
Anti-slip net spike for tires with concave grooves
The spike metal fitting is connected to the
Around the mesh intersection of the anti-slip net body so that
If it is bent and tightened , the concave groove portion faces the road surface, and the upper edge (edge) of the opening of the concave groove portion bites into the road surface when traveling on a frozen road surface and is caught, so that grip performance is improved, and the frozen road surface is improved. It is very effective when traveling.

Further, since surface melted ice such as a frozen road surface is released through a concave groove extending over the entire length of the spike fitting, grip performance (abrasion resistance) is further improved , and the spike fitting can be effectively used. In addition, the surface of the bracket body
Induction hardening of the grounding surface on the side increases the abrasion resistance of the grounding surface and increases the durability of the bracket body.
To increase the durability of the edge and improve the grip
The effect can be maintained for a long time, and the spike bracket
This has the effect of improving the service life of the device itself . And gold
The tool body is wound from the back side at the intersection of the antiskid net for tires
Since it is diffracted and fastened, it can be
When quenching is applied, it is bent at the time of attachment to the net
May be damaged.
By limiting to the part without such a problem
The effect of improving the durability is obtained . In addition, the groove
Over the entire length in the longitudinal direction of the body
Therefore, when forming the groove, cold rolling is adopted.
Therefore, compared with the case where the formation is performed by press working,
Part is formed at a predetermined depth to improve the grip force.
Effective and reduce manufacturing costs
You .

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a spike fitting according to the present invention, wherein a state before bending at both ends is shown by a virtual line, and a state after bending is shown by a solid line.

FIG. 2 is a plan view showing a state of attachment to a non-slip net main body.

FIG. 3 is an enlarged view of a main part of FIG. 2;

FIG. 4 is a sectional view taken along line (4)-(4) in FIG.

FIG. 5 is a sectional view taken along the line (5)-(5) in FIG. 3;

FIG. 6 is a front view of a metal fitting main body showing an example of an induction hardening portion.

FIG. 7 is an enlarged view of a main part of a metal fitting main body, showing an example of a depth of induction hardening.

FIG. 8 is a front view of a metal fitting main body showing another example of the induction hardening portion.

FIG. 9 is a front view of a metal fitting main body showing another example of the induction hardening portion.

[Explanation of symbols]

A: Spike metal fittings B: Non-slip net 1 ... Metal fitting body a: Non-slip net main body 2: Depressed groove part a1: Mesh crossing part 3: Ground contact side 20: Part subjected to induction hardening 4. Edge

Claims (1)

(57) [Scope of request for utility model registration] 1. A bracket body formed by bending a strip-shaped steel plate into a U-shape.
Tie so that the back side of the bracket body contacts the net.
Winding diffraction from the back side of the net at the intersection of the anti-slip net
Anti-slip net spikes for tires
In the bracket, the length of the bracket body is on the front side of the bracket body.
A groove is formed over the entire length in the direction, and the surface of the bracket body
A spike metal fitting for a non-slip net for a tire, characterized in that a ground contact surface portion on a side is quenched .