JP3026376U - Spike pin removal prevention structure - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] By embedding a spike pin, which is supported by a metal plate body and brazed firmly, so as to project to the circumferential surface of the tire inside the tire body, the method can be applied to any frozen road. Even when the vehicle is running, the spike pin does not rattle, and the spike pin can be reliably prevented from coming off. A plate body (5) made of metal, a plurality of holes (6) and a cutout section (8) formed in the plate body (5) are formed, and the plate body (5) is further formed.
A non-slip member composed of a support portion 2 brazed to a plurality of recesses 5a provided at predetermined positions and a spike pin 5 fitted in the support portion 2 is embedded inside an automobile tire to obtain a spike pin 1 The tip portion of is projected on a predetermined peripheral surface of an automobile tire.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a structure for preventing a spike pin attached to a peripheral surface of an automobile tire from falling off, and more particularly to a structure for preventing a spike pin from falling off suitable for preventing a spike pin from slipping tires on snow-covered or frozen road vehicles. .

[0002]

[Prior art]

 BACKGROUND ART Conventionally, as an anti-skid for an automobile tire when traveling on snow or an icy road, there has been provided one as disclosed in Japanese Utility Model Publication No. 4-42170. FIG. 3 is a perspective view thereof, and in FIG. 3, 4 is a non-slip member, and the non-slip device 4 has a spike pin 1 made of a cemented carbide alloy fitted on a supporting portion 2 and the supporting portion 2 having a disk shape. It is welded to the flange 3 and the hole 3 is provided in the flange 3 as shown in the figure. The anti-skid device 4 was integrally molded and embedded in the tread portion of the peripheral surface of the automobile tire to prevent snow accumulation on the vehicle and slippage during traveling on a frozen road.

A hole 7 is provided in the flange 3 of the slip stopper 4 in order to prevent the slip stopper 4 attached to the automobile tire from falling off from the tire when the vehicle is running. 7 was filled with the rubber material of the tire integrally molded, and the anti-skid device 4 was configured to be firmly embedded inside the tire.

[0004]

[Problems to be solved by the device]

 However, since the disk shape of the flange 3 of the above-described conventional anti-skid device 4 is small, the pressing force applied to the tire is increased when the vehicle is traveling on a icy road or a road with little snowfall. A large stress is applied to the tire by the driving force of the tire, and by repeatedly receiving this stress, a gap is generated between the anti-skid tool 4 and the rubber in the embedded portion of the tire, which causes backlash, and eventually the rubber material of the tire is destroyed. Finally, there was a drawback that the anti-skid device 4 fell off the tire and the anti-skid function of the tire was lost.

In particular, when the speed of the vehicle is large on an icy road or a road with little snow, the repeated stress applied to the anti-skid device 4 is large, and the above-mentioned failure of the rubber material inside the tire rapidly progresses, causing a problem. There is a problem that is likely to occur. The present invention has been made in view of the above points, and the purpose thereof is to solve the drawbacks of the conventional example, to fix a plurality of spike pins to a plate made of metal, and to fix the vehicle on any frozen road. This is to provide a new spike pin slip-out prevention structure that can prevent the spike pin from rattling and preventing it from slipping out even when the vehicle is running.

[0006]

[Means for Solving the Problems]

 The spike pin slip-off preventing structure according to the present invention forms at least holes and notches in a plate body made of metal, and provides a plurality of recesses in the plate body, and a support portion for supporting the spike pin in each recess. Is brazed.

According to this invention, a hole and a notch are formed in a plate body made of metal, a plurality of recesses are provided in the plate body, and a support for supporting a spike pin in each of the plurality of recesses. The parts are brazed to form a non-slip device. The spike pins are made of cemented carbide and have excellent wear resistance.The spike pins are integrally molded during tire molding so that the ends of the spike pins are located and exposed at the predetermined positions on the tread portion of the peripheral surface of the automobile tire. And bury it. The tire generated in this way will not loosen the spike pin, sway up and down, and will not rotate even when the vehicle runs at high speed on snowy or frozen roads or roads with relatively little snow It is possible to obtain a structure for preventing the spike pin from coming off securely.

[0008]

[Embodiment of device]

 An embodiment of the structure for preventing the spike pin from coming off according to the present invention will be described with reference to FIGS. The same parts as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted. In the figure, reference numeral 5 is a metal plate, and a plurality of holes 6 and a plurality of cutouts 8 are formed in the plate 5. Denoted at 5a is a concave portion provided at a predetermined position of the plate body 1, and 1 is a spike pin. ing. 8 is an automobile tire.

The metal plate 5 is, for example, formed in a rectangular shape of a predetermined size in order to embed the iron plate 1 in the tread portion of the automobile tire 8, and a plurality of metal plates 5 are provided at predetermined positions of the plate 5. The number of recesses 5a (two in FIG. 1) is provided. The concave portion 5a is formed in a circular shape and is provided for positioning and brazing the cylindrical support portion 2. As is well known, this brazing welding is, for example, brazing for steel such as hard brazing (brass brazing), in which only the brazing material is melted without melting the joining material surface of the supporting portion 2. It can be joined and firmly welded. Then, the spike pin 1 made of tungsten-based cemented carbide or titanium alloy having high wear resistance is fitted to the supporting portion 2 welded to the recess 5a of the plate body 1.

A plurality of holes 6 are formed in the plate body 5 at predetermined positions other than the positions where the spike pins 1 are arranged and are formed in a long hole shape. As described above, the structure has a plurality of cutouts 8. As shown in FIG. 2, the plate body 5 with the spike pin 1 formed in this manner is integrally molded on the tread surface of the automobile tire 8 so that the tip of the spike pin 1 projects. When the tire is molded, the holes 6 and the cutouts 8 of the plate 5 are filled with the rubber material of the tire, and the spike pin 1 can be firmly embedded inside the tire to prevent the plate 1 from rattling. it can.

When the vehicle travels on snowy roads or frozen roads, large stress such as the weight of the vehicle and the pressing force due to the driving force of the tire is applied to the spike pin 1 of the automobile tire 8, but the spike pin 1 fixed to the plate 5 is It is embedded in the rubber material of the vehicle tire 8 in a state having a predetermined area, and further, due to the retaining action of the hole 6 and the cutout portion 8 of the plate body 1, the plate body 5 is shaken and shakes, or The spike pin 1 can be prevented from coming off without rotating around the axis.

Although the spike pin 1 welded to the plate 5 has been described as a non-slip spike tire integrally molded with the automobile tire 8, a ladder-type anti-slip band or a net-type anti-slip band attached to the peripheral surface of the automobile tire. Of course, the present invention may be applied to a non-slip band or the like.

[0013]

[Effect of device]

 As described above, the structure for preventing the spike pin from falling out according to the present invention is such that the spike pin is welded to the plate body, the plate body is embedded inside the automobile tire, and the spike pin is projected to the tread portion of the tire circumferential surface. Due to the structure, there is no problem such as the spike pin rotating left or right with the shaft center as the center of play even if it receives a large amount of repeated pressing force applied to the tires when the vehicle is running on snow or frozen roads. , You can get a robust anti-slip spike tire, and the spike pin will not come off or fall out unless the tire is damaged.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a spike pin removal prevention structure according to the present invention.

FIG. 2 is a side sectional view showing a spike pin having a plate body of the present invention embedded in a tire and protruding to a tire peripheral surface.

FIG. 3 is a perspective view showing a conventional technique.

[Explanation of symbols]

 1 spike pin 2 support 5 plate 5a recess 6 hole 8 cutout 8 automobile tire

Claims (1)

[Scope of utility model registration request] 1. A plate body made of metal having at least holes and notches formed therein, a plurality of recesses being provided in the plate body, and brazing support parts supporting spike pins in the respective recesses. Characteristic spike pin removal prevention structure.