JPH0332483B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to tires for automobiles, and particularly relates to snow tires used for driving on roads such as snowy roads and icy roads.

[Conventional technology]

There are two types of conventional snow tires: those with spike pins and those without. The latter is usually called a radial tire, and is suitable for driving on snowy roads, but is said to be less effective on frozen roads.The former, on the other hand, is suitable for driving on both frozen and snowy roads, but is suitable for driving on snowy roads. It is considered unsuitable for driving on roads.

[Problem to be solved by the invention]

In other words, since conventional snow tires with spike pins have spike pins, when driven on a normal road surface, the spike pins come into direct contact with the road surface and damage the road surface. to occur. This causes air pollution and has an adverse effect on the human body, and is attracting attention as one of today's traffic pollutions as so-called spiked tire pollution.

The present invention was made in view of the above circumstances, and is intended to be used in combination with conventional snow tires with spike pins and radial tires to prevent damage to the road surface and to prevent dust pollution caused by the tires. This invention provides a spike attachment/detaching device for snow tires.

[Means for Solving the Problems] The present invention has been devised to solve the problems as described above. The rods are connected, and a spring for protruding the spike pin is wound around the actuating rod, so that the spike pin is slidably housed, and the spike pin is installed in the actuating tube attached to both side edges of the snow tire, and the spring is further wound around the actuating rod. A spike mechanism is attached to a wire fastening roller by screwing the attached adjustment screw onto the operating rod, and the rollers attached via the operating rods of the spike pins on each side are connected in a circular shape via a wire. At the same time, a telescoping device is provided in the center of the wire, one end of which is fixed to the front snow tire and the other end connected to the wire, and by expanding and contracting the telescoping device, the wire is expanded and contracted, causing each of the spike pins to protrude. The telescopic device consists of a rack gear, a pin-on gear, a cover that pivotally supports the pinion gear and extends through the rack gear, and a shaft that is eccentrically supported within the cover. and a roller that comes into contact with the non-gear surface of the rack gear by means of a spring.

[Effect]

According to the snow tire spike attaching/detaching device configured as described above, the amount of protrusion of the spike pin from the snow tire is set in advance using an adjustment screw, and when driving on snowy or icy roads, the extension device is extended and removed from the snow tire. The spike pin is caused to protrude by a spring for protruding the spike pin, and the spike pin is fixed in the operating tube by the shaft rod so that it cannot be inserted into the operating tube. and,
During normal driving, when the telescoping device is retracted and the wire connected in a circular shape is pulled to reduce its diameter, the spike pin is retracted from the snow tire via the shaft rod, operating rod, and roller.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a spike attaching/detaching device for a snow tire according to the present invention, which can be roughly divided into a spike mechanism A and a spike actuation mechanism B.
The spike mechanism A includes a protruding pin 12 as described later.
Spike pin 1 equipped with and this spike pin 1
It consists of an actuating rod 2 that operates up and down (left and right in FIG. 1), and a roller 3 that actuates this actuating rod 2. On the other hand, as will be described later, the spike actuation mechanism B also has a telescoping device 50 between the wires 4 and 6, and is attached to the roller 3 connected to the wire 11 via the rack gear 5 of this telescoping device 50. 50 rack gear 5
The wires 4, 6, and 11 are expanded and contracted by the movement of the wires 4, 6, and 11, and the spike pins 1 are moved in and out. In other words, as shown in FIG.
are connected in a circular shape by the wire 11 and further connected to the expansion and contraction device 50 via the wires 4 and 6, and if the rack gear 5 is moved in the direction of loosening the wire 11, the circular wire 11 is Since it moves in the diameter reduction direction, the circular wire 11 moves the actuation rod 2 in the retraction direction via the roller 3. This movement of the actuating rod 2 causes the spike pin 1 to retract. In addition, 7 is a wire tube, 9 is a rim, and 10 is a wheel.

FIG. 2 shows the main parts of the device of the present invention, in which A is the spike mechanism A and B is the spike actuation mechanism B. First, the spike pin 1 of the spike mechanism A is made of a rod-shaped metal material, one or more protruding pins 12 are attached to one end surface, while the other end is formed into a square shape, and the operating rod 2 A joint portion 13 is provided to connect the two, and the joint portion 13 has a slope 13a. Reference numeral 14 denotes a shaft support for receiving the shaft 15, to which the operating rod 2 is fixed. That is,
The shaft rod 15 is attached to the shaft support 14 to which one end of the operating rod 2 is fixed.
Place the joint part 13 of the spike pin 1 on top of it.
When the shaft rod 15 is connected so as to overlap, the shaft rod 15 has a connecting function within the joint portion 13 and shaft support 14, and is in a rolling state. Note that a screw thread 16 is provided at the other end of the actuating rod 2. Reference numeral 17 designates an operating tube for the spike pin 1, into which the spike pin 1 and the operating rod 2 are inserted, and the operating rod 2 slides within this operating tube 17. The actuating tube 17 is provided with a flange 18 at one end, and the other end is formed into a square shape to have the same shape as the spike pin 1. Reference numeral 19 denotes a cutout portion for making it into a square shape. 24 is an adjustment screw, with screw 2 inside.
5 is provided and is screwed onto the thread 16 of the actuating rod 2 to adjust the operation of the actuating rod 2.
Reference numeral 21 denotes a roller support member, to which the roller 3 is attached via a support shaft 22. 23 is a roller support material 21
and the adjustment screw 24. 28
is a spring wound around the actuating rod 2. 27 is a waterproof seal, and 26 is a ring. Next, to explain how to assemble this spike mechanism A, first insert the spring 28, waterproof seal 27, and ring 26 into the operating rod 2 connected to the spike pin 1 in this order as described above, and then insert the spring 28, the waterproof seal 27, and the ring 26 into the operating tube 17. Insert it, and make the screw thread 16 stick out from the hole 20 for the actuating rod. Next, insert the adjusting screw 24 and the spring 23 into the operating rod 2 in this order, and then tighten the adjusting screw 24 into the thread 1 of the operating rod 2.
6, and further fix the roller support 12 to the end of the actuating rod 2, the roller 3 is connected to the roller support 21.
It will be connected to the actuating rod 2 in the actuating tube 17 via.

Next, the spike actuation mechanism B will be explained with reference to FIG. A wire 4,
4 and wires 6, 6 are connected. 30 is a stop plate of the rack gear 5 fixed to the holding plate 29.

This telescopic device 50 includes a rack gear 5 and a pinion gear 34 that meshes with the rack gear 5.
A cover 40 that accommodates and pivotally supports the pinion gear 34 and extends through the rack gear 5; and a cover 40 that houses and pivotally supports the pinion gear 34; It consists of a roller 36 that is in contact with the non-gear surface 5a by the force of a spring 38. This rack gear 5 is a pinion gear 34.
and the rollers 36, it is possible to extend and contract the spike pin 1 and hold it in a predetermined position (the protruding state or the retracted state of the spike pin 1). That is, when a handle (not shown) is inserted into the operating recess 35 of the pinion gear 34 and rotated clockwise,
Since the rack gear 5 moves in the direction of arrow _Y1 against the contact force of the roller 36, the spike pin 1
Wires 4, 11, roller 3, roller support material 2
1. Move in the retraction direction via the actuating rod 2 and the shaft rod 15. The reason for this is that the roller 36
7 is in contact with the non-easy surface 5a of the rack gear 5 due to the spring force of the spring 38, and when the rack gear 5 moves in the arrow _Y1 direction, the roller 3
6 is a direction away from the non-easy surface 5a with the shaft 37 as the center (arrow line
This is because the force acts in the Y direction (Y ₂ direction), and the roller 36 smoothly slides on the non-smooth surface 5a. When the spike pin 1 is moved to the predetermined position in this way, the pinion gear 34 stops rotating.
At this time, even if a force acts on the rack gear 5 in the direction of the arrow _Y3 and it attempts to move, the roller 36 moves the rack gear 5 around the shaft 37 in accordance with the spring force.
Since a force acts in the direction (arrow Y ₄ ) of contacting the non-easy surface 5a of the rack gear 5, the rack gear 5 cannot slide on the roller 36 and is held at that position. As a result, the spike pin 1 is held at a predetermined position in the retracted state.

Next, when the handle is inserted into the operating recess 39 of the roller 36 and the roller 36 is moved in the direction of the arrow _Y2 against the spring 38, the rack gear 5 is moved in the direction of the arrow Y3 due to the weight of the wire 11, roller ₃ , etc. Move to
Further, the spike pin 11 is moved in the projecting direction by the spring force of the spring 28. Like this spike pin 1
When the rack gear 5 is moved to a predetermined position, the roller 36 stops moving and the rack gear 5 is held at that position. As a result, the spike pin 1 is held in a predetermined position in a protruding state.

Note that 32 is a stopper that prevents the wire 6 from being overwound, and 33 is a locking tool for the wire 4.

FIG. 3 shows the spike mechanism B, which is the main part of the present invention.
This figure shows the effect of the ispike when it is used, and B shows the state when it is not used. First, when using spikes, all you have to do is make the protruding pin 12 of the spike pin 1 protrude from the surface of the snow tire 8 as shown in Figure A.
If the actuating rod 2 is moved to the right via the adjustment screw 24, the spike pin 1 will be moved to the right via the shaft rod 15, and the protruding pin 12 will protrude. That is, since the actuating tube 17 is fixed to the snow tire 8 via the flange 18, the force of the actuating rod 2 pressurized to the shaft rod 15 is applied to the spike pin 1 using this flange 18 as a support point. You will be pushed out. After positioning each spike pin 1 in this way (state when in use),
Next, as shown in the diagram, each spike pin 1 is returned to its original position and set to the state when not in use. In this case, when the rack gear 5 is returned to its original position as shown in 2nd B, the adjustment screw 24 will be disengaged from the actuating tube 17 via the roller 3, and the actuating rod 2 will move to the left, so that the spike pin 1 will It will automatically move to the left. In this way, adjust the adjustment screw 2 in advance.
4, the spike pin 1 is always in the state in which it is used (the state shown in Figure A), so it can be easily used in snow or ice burns without operating the spike actuation mechanism B. Can run on the road. Note that when driving in this state (with the protruding pin 12 of the spike pin 1 protruding), the protruding pin 12 is not pushed into the snow tire 8 as shown in Fig. 3 A. , when the spike pin 1 is pressed in the direction of the arrow _Y5 , the shaft rod 15 engages the joint part 13 of the spike pin 1.
When the spike pin 1 and the shaft support ₁₄ of the actuating rod 2 come into contact with the slope 13a located at
By not sliding in the inside of 7 and being fixed at a certain position, the pushing force can be stopped. That is, as shown in FIG. This is because each corner of the spike pin 1 and each corner of the actuating tube 17 are brought into a state of engagement due to this component force.

Next, the operation of the spike attaching/detaching device for snow tires having the above structure will be explained.

First, snow tires to which the present invention is applied are mounted on a car. Next, as shown in FIG. 3A, the amount of protrusion of the spike pin 1 is adjusted using the adjustment screw 24. Then, the operating recess 3 of the pinion gear 34
Insert the handle into the handle 5 and rotate it clockwise, move the rack gear 5 in the direction of the arrow _Y1 , insert the spike pin 1 through the wires 4, 11, the roller 3, the operating rod 2, etc., and complete the preparation.

When driving on snowy or frozen roads, insert the handle into the actuating recess 39 of the roller 36 and move the roller 36 in the direction of arrow _Y2 against the spring force of the spring 38. Since the stopped state is released, the rack gear 5 moves in the direction of the arrow _Y3 , and the spike pin 1 is projected by the force of the spring 28. When the spike pin 1 protrudes by a predetermined amount, the handle is removed from the operating recess 39 and the movement of the rack gear 5 is stopped. At this time, the rack gear 5 is locked by the roller 36 and its movement in the direction of the arrow _Y3 is restricted, and conversely, the movement of the rack gear 5 in the direction of the arrow _Y1 is buffered by the wires 6 and 11, and these wires 6 and 11 are always in a tense state, so they are not in a normal state.

When driving on a snowy or frozen road in this state, a force is applied to the spike pin 1 to push it into the snow tire 8, but this force is converted into a component force in the direction of arrow _Y6 by the slope 13a of the joint portion 13, and is activated. It stops due to friction with the pipe 17, the spike pin 1 works effectively, and the car does not slip.

Next, when traveling in parallel, insert the handle into the operating recess 35 of the pinion gear 34,
Rotate clockwise and move rack gear 5 to arrow Y ₁
The spike pin 1 may be recessed by moving the spike pin 1 in the direction shown in FIG. After being retracted, the lock gear 5 does not return to its original position due to the locking action of the roller 36. Therefore,
The vehicle can run with the spike pin 1 recessed.

〔Effect of the invention〕

Since the present invention is configured as described above, it has the advantages of both a conventional snow radial tire and a snow tire with spike pins, and also allows the spike pins to be freely protruded and retracted. This method eliminates the need to replace tires that use chains, is not only easy to handle, but also allows mass production at low cost, making it a novel and unique product that is highly practical and economical. It can be said that this is a spike attachment and detachment device that can provide snow tires with excellent quality.

[Brief explanation of the drawing]

Fig. 1 is a schematic explanatory diagram showing the spike attaching/detaching device for snow tires of the present invention, Fig. 2 is a partially enlarged explanatory diagram showing the main parts of the device of the present invention, and A is a diagram of the spike mechanism; 3 is a diagram of the spike operation mechanism, and FIG. 3 is an explanatory schematic diagram showing the operation of the spike mechanism shown in FIG. 2A. 1... Spike pin, 2... Operating rod, 3... Roller, 4, 6, 11... Wire, 5... Rack gear, 5a... Non-easy surface, 8... Snow tire, 12... Protruding pin, 13...Joint part, 14...
... shaft bearing, 15 ... shaft rod, 17 ... operating pipe, 18
...Flange, 20...Hole for operating rod, 21...Roller support material, 23, 28, 38...Spring, 24...
...Adjustment screw, 27...Waterproof seal, 32...Stopper, 34...Pinion gear, 35, 39...
...Operating part, 36...Roller, 37...Shaft,
40...Cover, 50...Extension device, A...Spike mechanism, B...Spike actuation mechanism.

Claims (1)

[Claims] 1. The actuating rod 2 is connected to the spike pin 1 equipped with one or more protruding pins 12 via the shaft rod 15.
and a spring 28 for protruding the spike pin is wound around the operating rod 2 so that the spike pin 1 is slidably housed and installed in the operating tube 17 attached to both side edge surfaces of the snow tire 8. Then, an adjustment screw 24 with a spring 23 is screwed onto the operating rod 2, and a spike mechanism A is attached to the wire fastening roller 3, and the spike mechanism A is attached to the spike pins 1 on each side via the operating rod 2. The rollers 3 are connected in a circular shape via a wire 11, and a telescoping device 50 is provided in the center of the wire 11 with one end fixed to the snow tire 8 and the other end connected to the wire 11. It consists of a spike actuating mechanism B that expands and contracts the wire 11 by expanding and contracting the expansion device 50, and allows each of the spike pins 1 to protrude freely.
and a pin-on gear 34, and the pinion gear 34.
a cover 40 which pivotally supports the rack gear 5 and through which the rack gear 5 passes; and a roller 36 which is pivotally supported within the cover 40 by an eccentric shaft 37 and which abuts against the non-gear surface 5a of the rack gear 5 by a spring 38.
A spike attaching/detaching device for snow tires, characterized by comprising: