JPH037607A - Antiskid tire - Google Patents

Abstract

PURPOSE:To allow spikes to freely project despite of a tire pneumatic pressure and a dead weight in the title skid tire for a car by burying, a projective spike unit capable of freely projecting with a male and female screws, on a whole periphery inside a tread surface and providing a male and female screws turning drive means. CONSTITUTION:A button is pushed to operate a pneumatic valve for feeding air into a spike receiving box 4 through an air hole 81, which rotates a rotor 5 through vanes 3. With the rotation of the rotor 5, a femal screw 5s is rotated relatively to a male screw 2s. A spike 2 having the male screw 2s, with a slide key 6 fitted into a key groove 4K, is moved in a straight line so as to be sinked. Reversely, the spike is projected with air supplied from an air hole 82. With this arrangement, it is possible to freely project the spike despite of a tire pneumatic pressure and a dead weight.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a non-slip tire in which spikes embedded in an automobile tire can be retracted.

[Conventional technology] Spiked tires have an effective anti-slip ability on snowy roads and icy roads, but when there is no snow, the spikes scrape the road surface and generate dust pollution. To deal with this, a means to make spikes appear was developed in Japanese Patent Application Laid-Open No. 59-145.
It is disclosed in Japanese Patent Application Laid-open No. 606 (hereinafter referred to as "first prior art") and Japanese Patent Application Laid-Open No. 59-216706 (hereinafter referred to as "second prior art"). These use compressed air or hydraulic pressure to push out the spikes, then reduce the pressure to retract the spikes. Also, JP-A-6:2
-225409 Publication (hereinafter referred to as "Third Prior Art")
discloses a system in which the tire air pressure is increased to cause the spikes to protrude, and the tire air pressure is decreased to cause the spikes to retract. In addition, Japanese Patent Application Laid-Open No. 63-279906 is also referred to as “
4th Prior Art) discloses a tire in which spikes are provided so as to be retractable from the center of the tire.

[Problem to be solved by the invention] However, although the first prior art or the second prior art is theoretically valid, there is always a leakage of air or oil, so the first prior art does not allow air to be continuously supplied. Otherwise, the protruding state of the spikes cannot be maintained, and in the second prior art, the spikes disappear as soon as they come out.In addition, in the third prior art, the tire pressure is increased when driving on snowy roads, and when driving on normal roads. Reducing the tire air pressure is undesirable in terms of driving performance and sliding ability. Furthermore, in the 71st prior art, the amount of spikes that appear or disappear changes depending on the degree of dent in the tire due to tire air pressure, load position, etc. There is also the problem that a flat tire can cause a lot of trouble.

This invention was made in order to solve these problems, and it is a sliding mechanism that can reliably bring the spike into the protruding or recessed state, regardless of air leakage, etc., or the pneumatic loading amount of the tie A'. The purpose is to obtain a stopping tire.

[Means for Solving the Problems] The anti-slip tire according to the present invention has an intruding spike unit l~ configured to cause spikes to appear and retract by converting the rotational motion of a rotating member into axial movement using male and female screws. A large number of rotational drive means are embedded in the entire circumference of one hered surface and rotate the rotating members of each of the retractable and protruding spike units.

[Operation 1] In the non-slip tire appearance spike unit 1 of the present invention, when the rotating member is rotated in either direction by the rotational drive means, the rotational movement of the rotating member is caused to move the spike in the axial direction by the male and female screws. , and depending on the direction of rotation, the spikes will protrude or retract.

``Example'' An example of the present invention will be described below with reference to the drawings. 1st
8 and 15 show the first embodiment.
The figure is a vertical sectional view showing the protruding state of the intruding spike unit l according to embodiment A, FIG. 2 is a longitudinal sectional view showing the retracted state, and FIG. 3 is a sectional view taken along Figure 4 is 1B
FIG. 5 is a sectional view 1a showing the retracted state; FIG. 6 is a sectional view showing 'l/' [-Vl of FIG. 4; Figure 7, 1st
FIG. 5 is a half sectional view of the tire, and FIG. 8 is a sectional view along the circumferential surface inside the tire tread.

In the figure, 1 is the tire l-red surface, 2 is the spike,
2s is a male screw formed at the base of the spike 2, 3 is a blade, 4 is a spike receiver box, 4 is a key hole formed in the spike receiver box 4, 5 is a rotating body, 5., is inside the rotating body 5 6 is a sliding key attached to the spike 2; 7 is a bearing for supporting the rotating body 5 in the spike receiving box 4; 2;
0 consists of the following elements: 1~. 8 is a ventilation path, and 81.82 is a ventilation port.

In the 1A embodiment shown in FIGS. 1 to 3, the blade 3
A plurality of (eight in the figure) are fixed around the rotating body 5. The spike receiving box 4 accommodates and supports the spikes 2 and the rotating body 5. As shown in FIG. 7, FIG. 7, FIG. 8, and FIG. - It is connected to the ventilation passages 8 provided in the circumferential direction inside the tire in a red double-layered structure so as to successively communicate with each other. The ventilation path 8 may have a meandering shape as shown in FIG. 8.

In the structure shown in FIG. 15, a ventilation passage 8, a spike drive mechanism, etc. are provided in the inner tire of a double-walled tire, and the spike unit is also supported by the inner tire. A tire with a tube has a structure in which the inner tire can be removed together with the spike unit and its drive mechanism, and the outer tire can be used alone.

A female thread 5s corresponding to the male thread 2s of the spike 2 is formed on the inner peripheral surface of the rotating body 5. Further, the rotating body 5 is rotatably supported by the spike receiving box 4 through a bearing 7.

Place the sliding key 6 fixed on the spike 2 into the spike receiver box 4
By loosely fitting the spike 2 into the keyway 4k cut into the key groove 4k, rotation of the spike 2 is restrained and movement in the axial direction is enabled.

Both ends of the air passage 8 are connected to the center of the tire wheel by a flexible air pipe (not shown), and both ends of the air pipe are connected to the inside of the automobile body by a known rotary joint structure as described in the second prior art. Connected via a valve to an air source such as a compressed air tank. The driver can freely send compressed air into the air passage 8 in any direction by operating this valve from the driver's seat.

Next, the operation of the 1A embodiment shown in FIGS. 1 to 3 will be described. FIG. 1 shows the spike 2 in a protruding state. The spike 2 is supported by a spike receiving box 4 around the periphery, and the male thread 2s of the spike 2 is connected to the rotating body 5 at the top.
The rotating body 5 is supported by the rotating body 5 by being screwed into the female thread 5s, and the rotating body 5 is supported by the spike receiving box 4.
The spikes 2 are supported by the spike receiving box 4, and the spike receiving box 4 is embedded within the bottom surface of the tire tread.
Eventually, the spikes 2 are supported by the tire.

When attempting to immerse the spike, the driver presses a button (not shown) to operate an air valve and sends air through the ventilation path 8 toward the ventilation port 81, for example. Then, air is blown from top to bottom in FIG. 3, the blades 3 are pushed by the wind pressure, and the rotating body 5 rotates clockwise. Spike 2 has sliding key 6 and key 44. k, so it cannot rotate, and the rotating body 5 rotates, so the male screws 2s and fi that are screwed together cannot be rotated.
Due to the wedge action of the screw 5s, the rotational motion is converted into a rectilinear motion in the axial direction, and if the male screw 2s and female screw 5s are right-handed, the spike 2 will rise above the figure and enter the retracted state shown in FIG. 2. . Even if the air supply is stopped, the spikes 2 are supported by the spike receiving box 4 and maintain this immersed state. Although not shown in the drawings, it would be possible to provide a mechanism such as a click stop, in which a steel ball pushed by a spring and a shallow recess into which the steel ball fits are provided at the stop corresponding position of the spike. It can be maintained in a recessed or protruding state.

When changing from the immersed state shown in Figure 2 to the protruded state shown in Figure 1,
Operate the air valve to blow air from the vent 82. Then, the rotating body 5 rotates counterclockwise, and the spikes 2 are pushed out.

In addition, as shown in FIG.
If , the one on the right and the one on the left are
Since the rotation is reversed, the threads must be cut in the opposite direction.

Next, the structure and operation of the 1B embodiment shown in FIGS. 4 to 6 will be explained. The blade 3 is fixed to the spike 2, and the spike receiving box 4 is formed with a female thread 4s corresponding to the male thread 2s of the spike 2.
Male and female screws 2s screwed together, 4. Since the spike receiving box 4 is embedded in the tire, the spike 2 is supported by the tire via the spike receiving box 4.

When attempting to retract the spike 2 from the protruding state shown in FIG. , spike 2 is counterclockwise force Ifij 4
If the screws 2s and 4s are right-handed screws, the spike 2 will rise to one side in the figure and retract into the spike receiving box 4, resulting in the retracted state shown in FIG.

It is clear that when changing from the retracted state to the protruded state shown in FIG. 5, air can be blown in through the vent 81 in the opposite manner to the above, so the explanation will be omitted.

As shown in I-H, the loading and unloading of the spike according to this invention is done by sending air only when loading and unloading.
If left as is, it will maintain its protruding or retracted state, so there is no need to worry about leakage of operating air.

In addition, the figure shows that the tip of the spike receiving box 4 is on the tire tread surface 1.
This is fine if the spike receiving box 4 is made of something like hard plastic, but if the spike receiving box 4 is made of metal, the tip of the spike receiving box 4 will be at the tire tread surface 1. It is desirable to embed it so that it can be retracted a little more in order to prevent damage to the road surface and noise during normal driving.

Note that the compressed air may be manually generated and sent.

In addition, for each tire, both ends of the ventilation path that communicates with each retractable spike unit are provided as air supply n, and pressurized air is supplied from either of the air supply ports using a manual pump or a portable compressed air cylinder to spike the spikes. 2 may appear.

Next, a second embodiment shown in FIGS. 9 and 10 will be described. In the figure, 32 is a gear, 92 is a toothed belt,
94 is a routing cable. As shown in FIG. 9, the toothed bell 1 92 is provided in a circumferential hole formed in the tire 1 so as to be movable in the circumferential direction. The routing cable 94 is connected to the toothed heald 92 and the toothed bell 1
It passes through the hole 92 and forms a gentle curve from the hole to the rim portion of the tire, passing through the hole formed through the side portion of the tire.

The gear 32 is fixed to a rotating member of the spike unit 20, which is configured to convert rotational motion into linear motion by a screw mechanism similar to that of the first embodiment and cause the spike 2 to emerge and retract. The gear 32 is provided to mesh with the toothed belt 92. A toothed belt 92 as shown in FIG.
If the spike receiving box 20 is provided on both sides of the spike receiving box 1, the directions of the screws on the right side and the left side must be reversed as described above.

Next, the operation will be explained. At No. 9 U'A, by pulling either end of the routing cable 94, e.g. The gear 32 meshing with the gear 92 is rotated, and the spike 2 is protruded or retracted by the aforementioned screw mechanism. End B of the routing cable 94
and C to move the toothed belt 92 clockwise, the spikes 2 will move in the opposite direction.

Note that a chain may be provided in place of the toothed belt 92, and a sprocket wheel may be provided in place of the gear 32.

In addition, a rod with a protrusion and recess formed at the tip that engages with the toothed belt 92 or the chain is inserted into a hole drilled into the tire tread from the side of the tire, and the unevenness at the tip of this rod is inserted into the toothed belt 92 or the chain. The spikes may be caused to appear and disappear by fitting into the irregularities of the bar and rotating the bar to move the toothed belt 92 or the chain in the circumferential direction.

Next, a third embodiment shown in FIG. 11 will be described. A large number of spike units 20 each having a small electric motor 33 are buried inside the tire tread surface. The spike receiving box I-20 is configured as a screw mechanism as shown in the first embodiment so that rotational motion is converted into axial movement so that the spikes 2 come and go. The small electric motor 33 has one set of electricity! The electric wire 96 is connected to a slip ring 97, and is connected to an in-vehicle power source (not shown) by a set of brushes 98 that are in close contact with the set of slip rings 97. The in-vehicle electrical circuit is provided with a switch that can switch the current to flow in the opposite direction of the IF.

For example, by turning this switch in the positive direction, the brush 98.
Slip ring 97. Small electric motor 33 through electric wire 96
When a current is applied to the small electric motor 33, the small electric motor 33 rotates in the forward direction, and the rotating body described in the first embodiment is driven to rotate, and the rotational motion of the rotating body is converted into axial motion by the male and female screw mechanism described above. , spike 2 or e.g. protrude. When the switch is turned in the opposite direction and current flows in the opposite direction, the rotation is also reversed and the spike 2 is immersed.

FIGS. 16 to 18 show other configurations of the third embodiment using a small electric motor. In this configuration example, the 16th
As shown in the figure, the small electric motors 33 are as few as possible (eight in the figure) evenly distributed in consideration of the balance of the tires, and the flexible threaded rods 35 are connected to the tires so that the small electric motors 33 drive the rotation. As shown in FIGS. 17 and 18, a worm gear 95, which is provided circumferentially within the tread and engages with the screw of the flexible threaded rod 35, is attached to the rotating body of the spike unit.

Electric wire 96. Brush 98. Electric current is supplied to the small electric motor 33 through the slip ring 97, and when the small electric motor 33 rotates and the flexible threaded rod 35 rotates, the worm gear 95 is rotationally driven and the rotating body rotates. 4s converts the rotational motion into a rectilinear motion, and the spike 2 protrudes or retracts.

In this case as well, when spike units are provided on both sides of the flexible threaded rod 35 as shown in FIG. If screws 2s and 4s are right-handed, the other side is left-handed.

Figure 12 shows the tip of the spike 2 expanded into a thick inner plate shape, Figure 13 shows the tip of the spike 2 expanded into a conical shape, and Figure 14 shows the center part of the tip end surface of the spike 2 concave. It shows the shape that was inserted. In either case, when driving on a snowy road with the spikes 2 protruding, the grip on the snow or ice increases, preventing slippage and contributing to stable driving.

[Effects of the Invention] As described above, according to the present invention, rotation, which is an easy-to-handle motion, is given to the rotating member, and this rotational motion is converted into a linear motion by the male and female screws, so that the spikes appear and disappear. Therefore, the spikes can be easily and reliably made to appear and appear in that state as needed. This allows the spikes to protrude on snowy or icy roads to prevent slipping, and on normal roads to retract the spikes to prevent dust generation. Additionally, changes in tire pressure or vehicle weight do not affect the location of the spikes, and even if a tire goes flat, there is no particular problem.

[Brief explanation of the drawing]

The figures show one embodiment of this invention, in which FIG. 1 is a vertical cross-sectional view of the structure according to the first embodiment of the invention in a spike protruding state, FIG. 2 is a vertical cross-sectional view of the spike in a retracted state, and FIG. ■ in figure 1
-■ sectional view, FIG. 4 is a longitudinal sectional view of the structure according to the embodiment 1B in a spike protruding state, FIG. 5 is a vertical sectional view of the spike in a retracted state, and FIG. 6 is a sectional view taken along , FIG. 7 is a half sectional view of the tire, and FIG. 8 is a circumferential sectional view inside the tire tread. FIG. 9 is a side sectional view of a tire according to the second embodiment, FIG. 10 is an explanatory diagram of the main parts of the second embodiment, and FIG.
The figure is a side sectional view of a tire according to a third embodiment. 1st
2, 13 and 14 are diagrams showing the shape of the tip of the spike. FIG. 15 is a half-sectional view of a tire with another structure according to the first embodiment, FIG. 16 is a side sectional view of a tire showing another structure of the third embodiment, and FIGS. 17 and 18 are FIGS. It is an enlarged view of the main part. In the figure, 1 is the tire tread surface, 2 is the snowboard,
2S is a male thread, 20 is a spike unit, 3 is a blade, 32 is a gear, 33 is a small electric motor, 35 is a flexible threaded rod, 4 is a spike receiver box, 4S is a female thread, 5 is a rotating body, 5S is a ° Female thread, 8 is a ventilation path, 92 is a toothed belt, 94 is a routing cable, 95 is a worm gear, 96 is an electric wire,
97 is January bling, 98 is brush.

Claims (4)

[Claims] (1) A large number of retractable spike units configured to convert the rotational motion of the rotating member into axial movement using male and female screws to cause the spikes to appear and retract are buried all around the tire tread surface, and the rotating member is rotated. An anti-slip tire characterized by being equipped with a rotational drive means capable of rotating. (2) A large number of retractable spike units configured to convert the rotational motion of a rotating member having blades into axial movement using male and female screws to cause the spikes to appear and retract are buried all around the tire tread surface, and air is injected into the blades. 1. A non-slip tire, characterized in that a ventilation path is provided so that the rotating member can be rotated by spraying with air. (3) A large number of retractable spike units configured to retract and retract the spikes by converting the rotational motion of a rotating member having gears into axial movement using male and female screws are buried all around the tire tread surface, and the gears 1. A non-slip tire, characterized in that a toothed belt or chain that engages with the rotating member is provided so as to be able to move in the circumferential direction of the tire within the tire tread to rotate the rotating member. (4) A large number of retractable spike units are embedded around the entire circumference of the tire tread surface, configured to convert the rotational motion of a rotating member rotationally driven by a small electric motor or electromagnet into axial movement using male and female screws to cause the spikes to appear and retract. death,
An anti-slip tire comprising an electric circuit for feeding power to the small electric motor or electromagnet.