JPH0325008A - Nonslip unit and driving device for nonslip unit - Google Patents

Abstract

PURPOSE:To prevent a nonslip unit from falling off at the time of fitting a type so as to make its operation secure by swelling the opening edge of a cylinder for holding a nonslip pin in an outer circumferential direction, and forming it thick, in an nonslip unit for a vehicle tyre. CONSTITUTION:A locking swelled portion 20 placed in a wide diameter portion 12B beneath a locking portion 16 is formed at the rear end of a nonslip pin 32 loosely fitted in the cylinder 12 of a nonslip unit 10. This swelled portion 20 is formed thick and the lower end thereof is made nearly equal to the inner diameter of the wide diameter cylinder portion 12B. The nonslip unit 10 is thrown in a driving device 48 from a supply cylinder 60, the top end of a guide rod 56 is inserted in the hole 35 of a tyre, a plunger 58 is lowered, the nonslip unit 10 is guided by the guide rod 56 and also the diameter of the hole 35 is widened and the nonslip unit 10 is pressed in the hole 35. Due to this construction, the nonslip unit is prevented from falling off so as to make the operation secure.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an anti-slip unit and a driving device for the anti-slip unit 1. Specifically, the present invention relates to an anti-slip unit to be mounted on an automobile tire and a driving device for the anti-slip unit. This article relates to a driving device suitable for driving. (Prior Art) Conventional spiked tires are tires with various types of spikes driven into them in order to ensure safe driving performance of automobiles on snowy roads and ice-covered roads.

As shown in FIG. 7, in the method of manufacturing the above-mentioned spiked tire, the tip of the spike pin 1 and the tip 1a protruding from the tip are inserted into the tread of the tire where the hole for spike pin volatilization is enlarged. The tip of the plunger 2 is fitted into the tread hole, and the plunger 2 is moved by an air cylinder or the like to install the spike pin in the tread hole.

On the other hand, in a dispatch vehicle equipped with the conventional spiked tires mentioned above,
When driving on a road with an exposed road surface, a problem occurs where the spike pins scrape the road surface. This scraped dust flies into the atmosphere and causes air pollution.Additionally, spike pins have scraped off road signs such as Crossing 41F, which are drawn 1 meter above the road, making them unclear and dangerous. At the same time, when the snow melts, it is necessary to paint IT signs once again, which requires a huge amount of money, creating a major social problem.

Therefore, in order to solve the above-mentioned problems, the present inventor invented and filed Japanese Patent Application No. 63-50467. In these inventions, the tip of the anti-slip pin remains protruding from the tread surface due to resistance from the road surface only when the anti-slip pin is about to slip on a frozen road, such as when suddenly stopping IL, suddenly starting, or starting on a slope. This is an anti-slip unit in which the anti-slip pin is pressed against the road surface and inserted into the tire during normal driving conditions.

That is, as an example is shown in FIG. 8, the anti-slip unit 3
A partition 5 is provided in the middle of the cylinder 4 constituting the cylinder 4, and the enlarged portion 6a at the rear end of the anti-slip pin 6 is prevented from slipping out through a hole 5a formed in the partition 5. In addition, an enlarged diameter neck portion 6b formed at the tip of the anti-slip pin 5 and a retaining portion 5 of the cylinder 4 are also provided.
A spring 8 is disposed between the cylinder 4 and the cylinder 4, and the anti-slip pin 6 is biased in the direction of the opening edge 4a of the cylinder 4, and the enlarged diameter neck portion 6b protrudes. Therefore, the force that causes the anti-slip pin 6 to swing on the tire surface (horizontal component force: force generated by sudden braking, sudden starting, etc.)
When this is applied, the jaws of the enlarged diameter neck portion 6b of the anti-slip pin 6 engage with the opening a4a of the cylinder 4 and protrude, thereby exerting an anti-slip effect. (Problem to be solved by the invention 'M) If the conventional driving method is applied when driving the anti-slip unit 3 into the tire, the tip of the enlarged diameter neck portion 6b of the anti-slip pin 6 is pressed and installed in the trend part. becomes.

However, since the anti-slip pin 6 is biased by the spring 8, it is unstable, and the anti-slip unit 3 cannot be pushed into the tire by pressing the anti-slip pin 6. Also,
The anti-slip unit 3 may be pushed in in a tilted position. Furthermore, even if the anti-slip pin 6 is pressed while riding, there is a risk that the spring will be crushed or the elastic force of the spring will be destroyed, making it difficult for the anti-slip pin 6 to move forward or backward.

Moreover, even when pressing the opening edge 4a of the cylinder 4 of the anti-slip unit 3, only a slight positional shift occurs, and the cylinder 2
The opening edge 4a of the opening may be damaged or the opening edge 4a may be pushed in at an angle.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an anti-slip unit that can protrude from the first hole (Z plane) of a tire, and a driving device suitable for driving this anti-slip unit.

(Means for Solving the Problems) In order to solve the above problems, the present invention includes the following features.

First, in the anti-slip unit 1- of the present invention, an anti-slip pin having an enlarged portion at its rear end is loosely pushed into the cylinder so that it can move forward and backward in the axial direction of the cylinder, and a stopper pin provided in the middle of the cylinder is provided. In the anti-slip unit, the anti-slip unit is provided with a biasing means that prevents the enlarged part of the anti-slip pin from coming off at the part and urges the tip of the anti-slip pin to protrude, the opening edge of the cylinder bulging in the outer circumferential direction. It is characterized by a thick and imposing shape.

Further, the device for driving the anti-slip unit into the tire is installed in a guide tube that feeds the anti-slip unit so that the rear end side of the anti-slip unit faces the feeding direction. A plunger is provided at the tip of the plunger, a recess is formed at the tip of the plunger, the opening edge of the recess is used as a pressing part that presses the edge of the cylinder 1 of the anti-slip unit, and the space inside the recess at the tip of the plunger is used as the pressing part of the plunger. When pressing the cylinder opening edge of the anti-slip unit,
It is characterized in that it is formed in a space that does not come into contact with the tip of the anti-M pin of the anti-slip unit.

(effect) Next, the operation of the present invention will be described.

Attach the anti-slip unit to the tire by pressing the cylinder opening edge of the anti-slip unit with a plunger. On the other hand, since the cylinder opening edge of the anti-slip unit is formed thick, the plunger can reliably suppress the cylinder opening edge, allowing the anti-slip unit to be installed inside the tire. Furthermore, since the tip of the anti-slip pin is not pressed, the anti-slip pin and the spring that serves as the biasing means will not be damaged. (Embodiments) Hereinafter, preferred embodiments of the present invention will be described in detail based on the accompanying drawings.

Figure 1 shows a longitudinal cross-sectional view of the anti-slip unit. Overall code 10
is an anti-slip unit. 12 is a cylindrical cylinder, and a flange portion 14 is formed at the lower end. Further, the diameter of the cylinder 12 is reduced from the middle to the front end, and this part is defined as a reduced diameter cylinder section 12A, and the rear end of the cylinder 12 is defined as an enlarged diameter cylinder section 12I3. An inner flange extending centrally from the boundary between the enlarged diameter cylinder part 12B and the diameter reduced cylinder part 12A of the cylinder 12 and having a hole 16a in the center is formed, and this inner flange is used as the retaining part 16. An anti-slip pin 32 is loosely inserted into the cylinder 12, and the rear end of the anti-slip pin 32 is formed with an enlarged portion 20 for preventing it from coming off, which is located within the enlarged diameter cylinder portion 12I3 below the anti-slip portion 16. The middle part of the anti-slip pin 32 is a thin shaft 18, and the tip of the shirt 1-l8 has a large diameter expanded neck part 22.
is formed, and a protrusion 24 is formed at the center of the upper surface of this enlarged diameter neck portion 22. The enlarged portion 20 is formed thickly, and the lower end of the enlarged portion 20 substantially coincides with the inner diameter of the enlarged diameter cylinder portion 12B. On the other hand, the diameter of the upper surface side of the enlarged portion 20 is reduced. Therefore, the cross-sectional shape of the ampulla 20 is formed into a trapezoid. In addition, the upper surface of the enlarged portion 20 and the lower surface of the retaining portions 1.6 are arranged so that the axes of the cylinder 12 and the anti-slip pin 32 coincide when the physical part of the enlarged portion 20 and the lower surface of the retaining portions 1, 6 come into contact with each other. are each formed on a plane that intersects perpendicularly to the axis.

While the rear end surface of the cylinder 12 is closed by the closing plate 13, I! ! One portion 20b is shaped, and a spring 30 is disposed between the closing plate 13 and the recess 20b. The spring 30 biases the anti-slip pin 32 in the projecting direction.

The anti-slip unit 10 is embedded in a hole 35 bored in a tire 34 (indicated by a two-dot chain line in FIG. 1). That is, the tip of the expanding neck 22 of the anti-slip pin 32 and the protrusion 2
4, or only the protrusion 24 is embedded in the tire 34 with only the protrusion 24 protruding from the tread surface of the tire 34. Further, the opening edge 1 2 a portion of the cylinder {2 is formed with a thick bulging portion 12 b that bulges in the direction of the outer circumference. The movement of the anti-slip unit 10 will be explained below.

When a car equipped with an anti-slip tire into which the anti-slip unit 10 is installed applies the brakes, the rotational speed of the tire rapidly decreases. At the same time, a horizontal component force is applied to the tip of the anti-slip pin 32 due to resistance with the road surface (a force that causes the anti-slip pin 32 to swing is applied). Then, the anti-slip pin 32 swings, the jaw 22a of the enlarged diameter neck 22 engages with the opening edge 12a of the cylinder l2, and the enlarged diameter neck 22 and the protrusion 24 slightly protrude from the tread surface of the tire 34. It remains in this state and bites into the frozen road surface or compacted snow surface to prevent slipping.

Then, when the normal running condition returns and the anti-slip pin 32 leaves the ice and snow surface due to tire rotation, the deformed spring 30 returns and presses the enlarged diameter neck part 22, causing the enlarged part 20 to
The upper surface and the lower surface of the retaining portion 16 come into contact, and the anti-slip pin 32 is returned to the axial position of the cylinder king 2.

Next, the means for attaching the anti-slip units 1 and 1o to the tread portion of the tire will be described. FIG. 2 shows a sectional view of a device for driving tires into the anti-slip unit 1.

48 is a driving device.

At the lower end of the cylindrical guide tube 52, holding pieces 54 and guide rods 56 are alternately arranged at predetermined intervals along the circumference. The holding piece 54 holds the anti-slip unit 10 set within the guide tube 52. The holding piece 54 is guided [
52 and holds the flange portion 14 of the anti-slip unit IO. Further, the guide rod 56 is pushed into a hole 35 formed in the tread portion of the tire, into which the anti-slip unit 10 is mounted, and expands the diameter of the hole 35.

A plunger 58 is arranged in the hollow inside the guide tube 52 and is movable back and forth along the inner peripheral surface.

This plunger 58 is connected to motion means such as an air cylinder. The plunger 58 is lowered by a rotating means to mount the anti-slip unit 10 held by the holding piece 54 into the hole 35 in the 1/red portion of the tire. Further, a supply cylinder 60 is provided which branches at the tip of the guide [52 and extends diagonally upward. When the anti-slip unit 10 is lowered into the supply tube 60, the anti-slip unit 10
is sent from the supply tube 60 to the guide tube 52 and held by the holding piece 54.

The shape of the tip of the plunger 58 will be explained with reference to FIGS. 2 and 3.

A recess 62 is formed at the tip of the plunger 58 and is recessed along the axis. The recess 62 includes a guide port 62a whose diameter gradually decreases from the opening, and an engagement stage that engages with the thick bulge 12b of the opening edge 12a of the cylinder 12 of the anti-slip unit 10 following the guide port 62. portion 62b and this engagement step portion 62
Following b, the anti-slip unit 1 engaged with the engagement step portion 62b
The enlarged diameter neck portion 32 of the anti-slip pin 32 of No. 0 is surrounded by a space 62c formed in a size that does not touch the inner surface of the recess 62. Subsequently, using the driving device 48, the anti-slip Uniso 1-1
The operation of attaching the tire 0 to the 1 to red portions of the tire will be explained.

■ When the anti-slip unit 10 is lowered along the supply tube 60, it is transported from the supply tube 60 to the guide tube 52, and
It is held by a holding piece 54 at the lower end of.

(2) In this state, insert the tip of the guide rod 56 provided at the tip of the guide tube 52 into the hole 35. (2) Then, the plunger 58 is lowered. Then, the opening edge 12a of the cylinder 12 is guided by the guide port 62a at the tip of the plunger 58, and the engagement step 6 of the plunger 58 is guided.
2b.

■ When the plunger 58 is further lowered, the flange part 4 of the anti-slip unit 10 is attached to the holding piece 54 and the guide rod 56.
Descend while pushing out. Accordingly, the guide rod 56 enlarges the diameter of the hole 35 in the tread portion of the tire. When the plunger 58 is further lowered, the anti-slip unit 10 moves to the guide rod 56.
It is guided into the hole 35 and installed. ■ When the plunger 58 is further lowered, the guide tube 52
is pushed upward, and at the same time, the guide rod 56, which has expanded the diameter of the hole 35 in the tread portion of the tire, comes out of the hole 35.

■ Finally, remove the plunger 58 and
Raise ``2''. Thereafter, in the same manner, from the supply tube 60 to the next anti-slip unit 10
and drive the anti-slip unit 1o.

FIG. 4 shows that an anti-slip unit 1o of another shape has a plunger 5.
In this anti-slip unit 10, shown in the engaged state shown in FIG.

In FIG. 5(a), the other anti-slip unit 1-10 is the plunger 5.
8, and FIG. 5(b) shows a plan view of the anti-slip unit from the pin tip end side.

This anti-slip unit 1, 10 has an axial unevenness line 12e formed on the inner wall surface between the middle part and the tip of the cylinder l2. On the circumferential surface of the anti-slip pin 32, an axially uneven line 32e is formed which loosely fits into the above-mentioned uneven line 12c. Further, an enlarged portion 20 for preventing slippage is formed at the rear end of the anti-slip pin 32.

Further, the rear end of the cylinder 12 is closed by a closing plate 13, and a spring 30 is inserted between the closing plate 13 and the enlarged portion 20.
is arranged, and the anti-slip pin 32 is biased so that its tip protrudes from the opening 91 2 a of the cylinder l2.

When an automobile equipped with a tire in which the anti-slip pin 32 is embedded is driven, when the anti-slip pin 32 touches the ground during normal driving, it is pushed into the cylinder 12 against the biasing force of the spring 30. On the other hand, when the automobile is braked or accelerated, a horizontal component of force is applied to the anti-slip pin 32, and the uneven strip 32e of the anti-slip pin 32 engages with the opening edge 12f of the uneven strip 12e of the cylinder 12, causing it to move into the cylinder 12. It becomes difficult to be pushed.

A bulge 12b is formed on the opening edge 12f of the cylinder 12, and a recess 62 of the plunger 58 similar to the embodiment described above fits into this bulge L2b. Also. The space 62c of the recess 62 is formed so that the tip of the anti-slip pin 32 does not come into contact with the inner surface.

Further, as shown in FIG. 6, the tip corner of the enlarged diameter neck portion 22 of the anti-slip pin 32 of the anti-slip unit 10 is chamfered so that the enlarged diameter neck portion 22 can be smoothly guided into the recess 62 of the plunger 58. It's okay. Various preferred embodiments of this invention have been described above, but it goes without saying that this invention is not limited to the above-mentioned embodiments. Of course, other modifications may be made.

(Effects of the Invention) As described above regarding the present invention, since the diameter of the cylinder opening edge of the anti-slip pin is expanded in the outer circumferential direction, when it is attached to a tire, it does not easily come off from the tire. In addition, since the anti-slip unit of the present invention has a thick opening edge of the cylinder, it can be attached to the tire by pressing the opening edge, and the anti-slip unit can be installed in the recess at the tip of the plunger. The anti-slip unit can be mounted by pressing the anti-slip unit while the enlarged diameter neck at the tip of the anti-slip pin remains free.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view of the anti-slip unit 1-, and Fig. 2 is the driving of the anti-slip unit h! 3 is a sectional view showing the fitted state of the anti-slip unit and the plunger, FIG. 4 is a sectional view showing the relationship between the other anti-slip unit 1- and the plunger,
Fig. 5(.) is a sectional view showing the relationship between another anti-slip unit and the plunger, Fig. 5(b) is a plan view of the anti-slip unit,
Fig. 6 is a cross-sectional view showing the relationship between another anti-slip unit and the plunger, Fig. 7 is a cross-sectional explanatory view showing the relationship between the spike pin and the plunger, and Fig. 8 is a vertical cross-sectional view showing the conventional anti-slip unit. be. 10... Anti-slip unit, 12... Cylinder, 12A
... Reduced diameter cylinder part, 12B 1 4 ・ t 8 ・ 22 ・ 30 ・ 52 ・ 56 ・ 6 2 ・ ・ Expanded diameter cylinder part, flange part, l6 shaft, 20 ・ Expanded diameter neck part, 22a spring, 32 guide tube , 54... Guide rod, 58... Recess.・Retention part, ・Ampulla part. ...Jaw area. ...Anti-slip pin, holding piece, plunger,

Claims (1)

[Scope of Claims] 1. An anti-slip pin having an enlarged portion formed at its rear end is loosely inserted into the cylinder so that it can move forward and backward in the axial direction of the cylinder. In the anti-slip unit, the anti-slip unit is provided with a biasing means for preventing the enlarged portion of the cylinder from slipping out and urging the tip of the anti-slip pin to protrude, wherein the opening edge of the cylinder is bulged in the outer circumferential direction and formed thick. An anti-slip unit featuring: 2. A plunger that advances and retreats along the axis within the guide tube is provided in the guide tube for feeding the anti-slip unit with its rear end facing in the feed direction, and a recess is formed at the tip of the plunger, and the recess is formed in the recess. The opening edge of the anti-slip unit is used as a pressing part that presses the cylinder opening edge of the anti-slip unit, and when the inner space of the recess at the tip of the plunger is pressed against the cylinder opening edge of the anti-slip unit with the pressing part of the plunger, the anti-slip pin of the anti-slip unit is pressed. An anti-slip unit driving device characterized by being formed in a space that does not hit the tip.