JPH0443366Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention is an anti-slip net for vehicle tires in which a large number of stitches are formed by intersecting non-metallic materials. This invention relates to a spike fitting that is arranged in a fixed manner.

BACKGROUND ART Conventionally, synthetic rubber has been mainly used as the non-metallic material for this type of anti-slip net for vehicle tires, and typically, a developed view is shown in FIG. 1 of the attached drawings. The spike metal fittings which are the object of the present invention and which have a planar contour as shown in FIG. In this figure, the spike fitting 10 according to the present invention is shown attached to the net main body 1.

By the way, this spike metal fitting has conventionally been formed by bending a band-shaped metal plate to have a U-shaped vertical cross-sectional profile, as shown by reference numeral 20 in FIG. 9 of the attached drawings. It consists of a main body portion 20 ₀ having an inner width corresponding to the length of the intersection 2 of one stitch, and a pair of leg portions 20 1 integrally formed upright from each end of the main body portion 20 ₀ . In addition, to attach this to the intersection 2 of the stitches of the net 1, use the opening between the two leg portions 20 ₁ from the back side of the net 1 to the intersection 2, as shown in FIG. After fitting each leg portion 20 ₁ into the net 1, the portions of both leg portions 20 ₁ protruding from the surface of the net ₁ are connected to each other by using an appropriate mechanical device or the like. It is bent inward so as to be in contact with each other and fixed around the intersection 2 of the stitches on the surface of the net 1.

However, since the spike fitting 20 having such a cross section is fixed by bending the leg portion 20 ₁ along the periphery of the intersection 2 of the stitches of the easily deformable synthetic rubber net 1, When mechanically bending the leg portion 20 ₁ , if the intersecting part 2 of the stitches is deformed or the position where the bending force is applied shifts, the metal fitting 20 will not follow the shape of the intersecting part 2 of the stitches of the net 1. Deformation occurs. Additionally, as a result, if the spike metal fittings 20 are not accurately fixed around the intersecting portions 2 of the meshes of the net 1, the metal fittings 20 will be insufficiently fixed, and the metal fittings 20 will come off from the net 1 while the vehicle is running. Not only is there a danger of deformed metal fittings 2
There is also a risk that net 1 may be damaged due to net 0. Therefore, it was necessary to re-fasten the metal fittings 20, which took a lot of time.

Moreover, this type of spike metal fittings 20 are usually
Hard steel wire according to JIS is used, but if the hardness of this material is increased, cracks will appear at the bent corners when the leg portions ₂₀₁ are bent, so the upper limit of the hardness is around 350 on the HB hardness scale. Therefore, the service life of the spike fittings 20 is short.

Problems to be Solved by the Invention Therefore, the present invention eliminates the drawback that it is difficult to attach the spike fittings of the conventional anti-slip net for vehicle tires, and makes it possible to accurately attach the spike fittings to the intersections of the meshes of the net. To provide an improved anti-slip device for vehicle tires that can be quickly applied, does not cause deformation and therefore does not cause damage to the net, and has a long service life. The purpose is to obtain net spike metal fittings.

Means for Solving the Problems In order to achieve this object, the present invention fixes the anti-slip net 1 around the intersection 2 of the meshes of the anti-slip net 1 for vehicle tires, as shown in Figures 3 to 5 of the attached drawings. In the spike fitting, the spike fitting 10 is composed of a front fitting 11 and a back fitting 12, and each fitting 11, 12 is made of a material having a certain width and thickness, and The outline is almost U-shaped and both leg parts 11 ₁ , 11 ₂ ; 12 ₁ , 12 ₂
and grooves 11'd on the outer surface of the front metal fitting 11.
11'e is formed, and _the front metal fitting ₁₁ and the back metal fitting ₁₂ formed in this way _are connected to each other at the intersection of the stitches of the net 1. For a vehicle tire, the mutually adjacent leg portions 11 ₁ , 12 ₁ ; 11 ₂ , 12 ₂ are fixed to each other in a resilient state when placed along each outer surface of the portion 2. It features a non-slip net spiked metal fitting.

In one embodiment of the present invention that specifically implements this feature, the front metal fitting 11 and the back metal fitting 12 have main body portions 11 ₀ and 12 ₀ and both leg portions each having a certain width and thickness. 11 ₁ ,11 ₂ ;1
2 ₁ , 12 _{2 ,} and has a substantially U-shaped longitudinal cross-sectional profile, and the outer surfaces of both leg portions 11 ₁ , 11 ₂ of the front metal fitting 11 have their respective longitudinal center lines. Concave grooves 11'd each having a U-shaped cross section are provided approximately symmetrically along the
In addition, both leg portions 12 ₁ , 12 ₂ of the back metal fitting 12
is the width of each leg portion 11 ₁ , 11 ₂ of the front metal fitting 11
The width of the groove 11'd provided on the outer surface of the groove 11'd is approximately equal to the width of the inner surface portion 1 of
2'd is made approximately equal to the distance between the opposing bottom surfaces of the grooves 11'd of both leg portions 11 ₁ and 11 ₂ of the front metal fitting 11, and in this way, the From the front side, both leg portions 11 _{1 ,} 11 ₂ of the front metal fitting 11 are guided along each outer surface of the intersecting portion 2 of the stitches, and then the outer surfaces of the leg portions 11 ₁ , 11 ₂ are formed. A net 1 is placed in each groove 11'd.
From the back side, each leg portion 12 ₁ , 12 ₂ of the back metal fitting 12
By inserting the metal fittings 11 and 12, respectively, the metal fittings 11 and 12 are elastically fixed. In addition, both leg portions 12 ₁ , 1 of the back metal fitting 12
The distance between the inner surface portions 12'd of the side portions of 2 ₂ is equal to the distance between the bottom surfaces of the grooves 11'd formed in both the leg portions 11 ₁ and 11 ₂ of the front metal fitting 11, or Alternatively, it is desirable to make it slightly smaller than that, and the upper outer surface inclined portion 11b is formed by slanting the outer surface between the main body 11 ₀ of the front metal fitting 11 and both the leg portions 11 ₁ and 11 ₂ . On the other hand, back metal fitting 1
The end portions of both the leg portions 12 ₁ and 12 ₂ of 2 are formed into an upper inner surface inclined portion 12'b formed with respect to the upper outer surface inclined portion 11b formed on the front metal fitting 11. , when both metal fittings 11 and 12 are in the assembled state, these upper outer surface inclined portions 11b
It is desirable that the upper inner surface inclined portion 12'b and the upper inner surface inclined portion 12'b resiliently engage with each other.

Embodiments Hereinafter, the present invention will be described in detail with reference to FIGS. 1 to 8 of the accompanying drawings showing embodiments thereof.

First, FIG. 1 shows an exploded view of a part of the front side of the anti-slip net 1 for a vehicle tire to which the spike fitting 10 according to the present invention is attached. Spike metal fittings 10 according to the present invention are attached to several locations of the stitch intersections 2, respectively. Further, one of the spike metal fittings 10 is shown in an enlarged plan view in FIG. 2, and its front view is shown in an enlarged scale in FIG. has been done.

As can be seen from these drawings, the spike metal fitting 10 according to the present invention
It consists of a pair of metal fittings that are firmly combined with each other so as to cover the front and back sides, that is, one front metal fitting 11 and one back metal fitting 12. , 12 is
Before being fixed to the intersection 2 of the stitches of the net 1, it has a shape as shown in an exploded perspective view in FIG.

As shown in these drawings, first, the front metal fitting 11
is made of carbide material, etc., and is formed by molding it into a substantially U-shaped vertical cross-sectional profile with a rectangular cross-section having a desired width and thickness. , in detail, a main body portion ₁₁₀ having a rectangular cross section and a certain length, and curved from each end thereof, respectively,
It is formed from both leg portions 11 ₁ and 11 ₂ having a certain length and having a rectangular cross section, but on the inner and outer surfaces of each bent corner, respectively.
For example, approximately 30° to the outer surface of the main body portion ₁₁₀
An upper inner surface inclined portion 11a and an upper outer surface inclined portion 11b having an appropriate angle α are formed and placed, and the upper outer surface is also formed on the outer surfaces near the ends of both leg portions 11 ₁ and 11 ₂ . A lower outer surface inclined portion 11c corresponding to the inclined portion 11b is formed and placed, so that a short side outer surface portion 11d is formed on the outer surface of both leg portions 11 ₁ and 11 ₂ . Each end shall be left with a short length of end surface portion 11e parallel to the outer surface of body portion ₁₁₀ . Also, in this case, both leg parts 1
1 ₁ , 11 ₂ each opposing parallel side inner surface portion 11
The interval between f is approximately equal to the width of the intersection 2 of the stitches of the net 1, or is slightly wider.

Further, each of the outer surfaces of both leg portions 11 ₁ and 11 ₂ of the front metal fitting 11 has an upper outer surface inclined portion 1 .
1b to the side outer surface portion 11d, the lower outer surface inclined portion 11c and the end outer surface portion 11e, a recess having a certain width is formed symmetrically with respect to the center plane in the width direction of both leg portions 11 ₁ and 11 ₂ . Grooves 11'd, 11'c, 1
1'e are continuously formed at a certain depth so as to have a U-shaped cross section, but both leg portions 11
The bottom surfaces of the respective grooves 11'd formed in the side outer surface portions 11d of _{1 and 112} are parallel to each other, and the ends near the main body portion ₁₁₀ are connected to the respective upper outer surface inclined portions. 11b.

On the other hand, the back metal fitting 12 is connected to both leg portions 1 of the front metal fitting 11.
Concave grooves 11'd11'c and 1 formed in 1 ₁ and 11 ₂
having a width approximately equal to 1'e and a suitable thickness;
A belt-shaped metal plate with a rectangular cross section is used as a material, and is made up of a main body part ₁₂₀ having a certain length and leg parts ₁₂₁ and ₁₂₂ curved from each end of the body part 120. Each curved portion at each end of the main body portion 12 ₀ of both leg portions 12 ₁ and 12 ₂ corresponds to the bottom surface of the groove 11'c formed in the lower outer surface inclined portion 11c of the front metal fitting 11. Lower inner surface inclined portion 1 contoured to
2'c is continuously formed, and the end thereof is connected to a concave groove 11'd formed in each side outer surface portion 11d of both leg portions 11 ₁ and 11 ₂ of the front metal fitting 11.
In this case, both side inner surface portions 12'd are formed to correspond to the bottom surfaces of the
The distance between each leg portion 11 ₁ , 1 of the front metal fitting 11 is
The distance between the bottom surfaces of the grooves 11'd formed in ₁ . Furthermore, a slope is connected to the end of the side inner surface portion 12'd to correspond to the upper outer surface slope portion 11b formed on each leg portion 11 ₁ , 11 ₂ of the front metal fitting 11. The upper inner surface sloped portion 12'b is formed so as to cover a part of the upper outer surface sloped portion 11b, and the interval between the upper end portions is equal to the distance between both leg portions 11 ₁ of the front metal fitting 11. ，
each upper outer surface inclined portion 11b formed in 11 ₂ ;
Each groove 11' formed on each side outer surface portion 11d
It is assumed that the distance between the intersecting line with the bottom surface of d is slightly smaller.

In order to attach the front metal fittings 11 and back metal fittings 12 having such a configuration to the intersecting part 2 of the stitches of the net 1, first, as shown in FIGS. 3 to 5, the front metal fittings 11 and
is fitted into the intersecting portion 2 of the stitches of the net 1 from the front side of the net 1 by means of both leg portions 11 ₁ and 11 ₂ , and then formed on the outer surface of both leg portions 11 ₁ and 11 ₂ of the front metal fitting 11 in this state. Each concave groove 1
Insert the back metal fitting 1 from the back side of the net 1 into the inside of 1'd.
2, with the ends of both leg portions 12 ₁ and 12 ₂ spread out against their elasticity, and then slid toward the ends using their grooves 11'd as a guide. When these ends pass through the ends of the grooves 11'd formed in the side outer surface parts 11d of both leg parts 11 ₁ and 11 ₂ of the front metal fitting 11, each leg part of the back metal fitting 12 12 ₁ and 12 ₂ return to their original states due to their elasticity, so their upper inner surface inclined portions 12'b engage with the corresponding upper outer surface inclined portions 11b of the front metal fitting 11, and both Metal fittings 1
1 and 12 are now firmly held together. In this case, the distance between the respective grooves 11'd formed on the side outer surface portions 11d of both the leg portions 11 ₁ and 11 ₂ of the front metal fitting 11 is set to the distance between the two leg portions 12 of the back metal fitting 12. ₁ and 12 ₂ , the elastic engagement between them is as follows:
It will become even stronger. In this case, each of the leg portions 11 ₁ , 11 ₂ of the front metal fitting 11 has grooves 11'd, 11'c, and 11'e formed on the outer surface of each of the leg portions 11 1 , 11 2 of the front metal fitting 11 . ₁ , 12 ₂ are engaged with the corresponding side inner surface portions 12'd, lower inner surface inclined portions 12'c, and main body portion ₁₂₀ , so that both metal fittings 11 and 12 are made even stronger. When combined, the anti-slip net 1 can reliably cope with various resistances that the anti-slip net 1 receives when the vehicle is running, and the two will not come off. Furthermore, the relative misalignment between the two metal fittings 11 and 12 in the width direction can be reduced by installing the back metal fitting 12 inside the groove 11'd formed in the front metal fitting 11.
effectively prevented.

As shown in FIG. 6, the distance l ₁ between the side inner surface portions 11f of the leg portions 11 ₁ and 11 ₂ of the front metal fitting 11 and the width L of the intersecting portion 2 of the stitches of the net 1. The relationship is generally l ₁ = L, but the distance l ₂ between the tips of the leg portions 11 ₁ and 11 ₂ of the front metal fitting 11 satisfies the relationship l ₁ = L < l _2. If you do this, the net 1
can be easily attached to the intersection 2 of the stitches.

Moreover, among both metal fittings 11 and 12, the front metal fitting 11 is
Since it comes into direct contact with the road surface, etc., as mentioned above, a molded product made of cemented carbide or a strip plate of anti-wear steel is bent into an octagonal shape to form a roughly C-shape. After machining the required groove along the center line in the width direction of the outer circumferential surface, heat treatment is performed on the groove to improve the wear resistance by increasing the hardness to, for example, HB hardness of 440 or higher. Do it like this.

Furthermore, after forming the back metal fitting 12 as described above, it is necessary to heat treat it to improve wear resistance, but the back metal fitting 12 may be made of synthetic resin in some cases. be.

In the above embodiments, the combination of the front metal fitting 11 and the back metal fitting 12 has been described as having an angular engaging part, but this engaging part does not necessarily have such an angular shape. It is not necessary to have a suitable circular arc-shaped engagement portion. Further, the material can be easily obtained by molding a plate using a press or the like.

Furthermore, in order to further improve the wear resistance of the top metal fitting 11, as schematically shown in FIG. 7, a carbide chip 15 is embedded in the surface that contacts the tread, or as shown in FIG. , it is also possible to perform overlay welding of cemented carbide (Fig. 8 shows that the overlay welded part is
(represented by reference numeral 16).

Effects of the Invention Since the present invention has the above-described configuration, it is clear that it can exhibit the following effects. In other words, when attaching to a non-slip net, insert one of the front and back metal fittings by its legs at the intersection of the meshes of the net, then fit the same metal fitting into the other metal fitting,
Or, since all you have to do is fit another metal fitting into the same metal fitting, the fixing work is extremely simple. When the front metal fitting and the back metal fitting are fitted together, both legs of the front metal fitting are connected to both legs of the back metal fitting. In the concave grooves formed in both leg parts of the front metal fitting, it is engaged and latched in an elastic state between the inner surfaces of the parts, and
Since the inner surface and side edges of the back metal fittings fit together, one metal fitting will not slip out of the other metal fitting, and both metal fittings will not shift in the width direction from each other after fitting.Both legs of the front metal fittings The concave groove formed in the part serves as a guide when fitting the back metal fittings together, making it possible to assemble both metal fittings smoothly and fitting both metal fittings into accurate mutual positions.The hardness of the front metal fittings easily with high hardness, e.g.
Since the HB hardness can be 440 or higher,
It is possible to improve the wear resistance and extend the life of the spike metal fittings.As for the materials used, the front metal fittings are made of wear-resistant steel, cemented carbide, etc., and the back metal fittings are made of, for example,
It is possible to select the most suitable material for each, such as carbon steel or synthetic resin, and the overall price can be kept low.Both legs of the table fitting are parallel to each other, or their ends Since the opening is shaped to be slightly wider than the base, it can be easily inserted into the intersection of the nets of the front metal fitting, improving the workability and productivity of its assembly. In addition, there is no damage to the side surfaces of the intersections of the meshes of the net during assembly work, and the life of the net itself can therefore be extended.

[Brief explanation of the drawing]

FIG. 1 is a partial exploded view of a non-slip net equipped with spike fittings according to one embodiment of the present invention, FIG. 2 is a plan view of a spike fitting, and FIG.
4 is an exploded perspective view of the spike fitting according to the present invention, and FIG. 5 is an enlarged sectional view taken along the line - in the figure.
FIG. 6 is a perspective view shown in the assembled state; FIG.
The figure is a front view showing a state in which a carbide chip is provided on the tread surface of the front metal fitting, FIG. 8 is a front view showing a state in which carbide material is overlay welded, and FIG.
FIG. 10 is a front view showing the spike fitting, and a sectional view showing the spike fitting attached to the intersection of the stitches of the net. 10...Spike metal fittings, 11...Table metal fittings, 12
... Back metal fitting, 11 ₀ , 12 ₀ ... Main body part, 11 ₁ ,
11 ₂ , 12 ₁ , 12 ₂ ... Leg portion, 11b ... Upper outer surface inclined part, 11c ... Lower outer surface inclined part,
11d... Side outer surface part, 11e... End outer surface part, 11'c, 11'd, 11'e... Concave groove, 11
f...Side inner surface part, 12'b...Top inner surface inclined part, 12'c...Lower inner surface inclined part, 12'd...
... Side inner surface part, 12'e... End inner surface part, 1
5... Carbide chip, 16... Overlay welded carbide metal.

Claims (1)

[Claims for Utility Model Registration] 1. The front metal fitting 11 and the back metal fitting 12 each consist of main body portions 11 ₀ , 12 ₀ and leg portions 11 ₁ , 11 ₂ ; 12 ₁ , 12 ₂ each having a certain width and thickness. The outer surface of both leg portions 11 ₁ and 11 ₂ of the front metal fitting 11 has a cross section approximately symmetrical along the center line in the longitudinal direction. U-shaped groove 11'
d and 11'e are respectively provided,
In addition, both leg portions 12 ₁ and 12 ₂ of the back metal fitting 12 are
The width thereof is made approximately equal to the width of the groove 11'd provided on the outer surface of each leg portion 11 ₁ , 11 ₂ of the front metal fitting 11, and the interval between the inner surface portions 12'd of the opposing sides is set as shown in the table. Both leg parts 11 of metal fittings 11
The distance between the opposing bottom surfaces of the concave grooves 11'd of Nos. ₁ and 11 ₂ is made narrower or equal to each other, and in this way, from the front side of the net 1, along each outer surface of the intersection portion 2 of the mesh. Then, after both leg portions 11 ₁ and 11 ₂ of the front metal fitting 11 are guided, each groove 1 formed on the outer surface of these leg portions 11 ₁ and 11 ₂ is guided.
By inserting 1'd, both metal fittings 11, 1
2 is a spike fitting for a non-slip net for a vehicle tire which is adapted to be fixed to each other in a resilient state. 2 Main body 11 ₀ of front metal fitting 11 and each leg portion 1
The external surface between 1 ₁ and 11 ₂ is made oblique,
An upper outer surface inclined portion 11b is formed respectively, and at the lower end portion of each leg portion 11 ₁ , 1 ₂ , the outer surface portion is made oblique while leaving an end outer surface portion 11 e on the end surface thereof, and a lower outer surface inclined portion is formed. 11e,
respectively, forming these end outer surface portions 11
In e, a groove 1 is formed so as to communicate with the groove 11'd formed on the outer surface of each leg portion 11 ₁ and 11 ₂ .
1'e and the main body 11 ₀ of the front metal fitting 11.
A spike fitting for an anti-slip net for a vehicle tire according to claim 1, wherein the end of the concave groove 11'd near the top is opened to the upper outer surface inclined portion 11b. 3. The inner contours 12'e, 12'd, 12'b of each leg portion 12 ₁ , 12 ₂ of the back metal fitting 12 are
The end outer surface portion 11e of each leg portion 11 ₁ , 11 ₂ of
Concave groove 11′e formed in the side outer surface portion 11
A spike fitting for a non-slip net for a vehicle tire according to claim 2, which is a utility model registration device, which corresponds to the groove 11'd formed in the groove 11'd and the sloped portion 11b of the upper outer surface. 4 Utility model registration claims 1, 2 or 4, in which the front metal fitting 11 is made of wear-resistant steel such as hard steel wire rod, spring steel, alloy steel, etc., and is made to have a hardness of HB440 or more by applying heat treatment. A spike fitting for an anti-slip net for vehicle tires as described in item 3. 5. For a vehicle tire according to claim 1, 2 or 3 of the utility model registration claim, in which the front metal fitting 11 is made of a superhard material molded from powder or the like, and has a hardness of HB440 or more. Anti-slip net spike fittings. 6. The spike fitting for a non-slip net for a vehicle tire according to claim 1, 2 or 3 of the utility model registration claim, wherein the back metal fitting 12 is made of carbon steel, synthetic resin or the like. 7 Utility model registration claims 1 to 1 in which a carbide chip 15 is embedded in the outer surface of the main body portion ₁₁₀ of the front metal fitting 11, or a carbide material is overlaid by welding 16
A spike fitting for an anti-slip net for vehicle tires according to any one of Item 5.