JPS623002B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a removable anti-slip device for wheels, particularly motor vehicle wheels.

Such anti-slip devices prevent the slipping of wheels, especially the tires of motor vehicle wheels, on ice, snow, mud or wet ground. The best known anti-slip device is the snow chain, but its installation is laborious and time consuming.

The object of the invention is to provide an easily installed, lightweight design that, besides good anti-slip protection and lateral guidance on snow-covered roads, also ensures as quiet a run as possible on snow-free roads. To provide an anti-slip device that is inexpensive and easy to handle.

To solve this problem, according to the invention, the anti-slip device comprises two rigid support members of different lengths and two tensioning means of at least approximately the same length connecting the ends of both support members. at least one of both tension means or at least one additional means connecting both support members of each part supports the shorter support member to the longer support member; Consisting of a curved flexible band, the longer support members of one or both parts are provided with coupling means to connect the longer support members of both parts to each other.

Since the anti-slip device has no coupling means inside the wheel, the installation of the anti-slip device is extremely simple. For simple installation, it is necessary that at least one of the tension means or at least one additional band has a certain but not excessive bending strength, i.e. to elastically hold the shorter support member. It must have sufficient bending strength.
This way, during installation, there is no need to put your hand inside the wheel cover to install the shorter support member inside the wheel, and you can grasp the longer support member of the anti-slip device part and pull the The shorter support member, held by means or by a band, can be guided inside the wheel.

According to a preferred embodiment of the invention, the tensioning means is a chain, and a curved strip of flexible material is additionally provided. Chains are particularly suitable as tensioning means. This is because the chains have a particularly high tensile strength and, moreover, act particularly well as anti-slip agents.

Furthermore, the curved strip must facilitate the installation of both anti-slip device parts and must therefore be made of a particularly suitable material for this purpose, i.e. with sufficient bending strength to hold the strip. It can be made from plastic. In this case, the specifications of the band are that the band is made of polyurethane with a Shore hardness of approximately 89. Since the shorter support member supported on the inside of the wheel is not attached to the inside of the wheel by means of coupling means, but is held only by means of tension, preferably formed by a chain, the tension means If the anti-skid device breaks or tears, the entire anti-skid device will come off the wheel. In order to avoid the risk of accidents associated therewith, the two tensioning means parts are formed next to each other. As a result, if one of the tension means parts breaks, the anti-skid device remains attached to the wheel, and an alarm is generated simultaneously on the other hand, which allows the driver to stop the car and stop the anti-slip device. The device can be removed. This is ensured because a broken tensioning means part that hits the wheel shroud of the vehicle during the cycle of the rotating wheel generates a noise that is intolerable for the driver over a long period of time.

The invention will be explained in detail below with reference to drawings showing examples.

The drawing shows the treads 2 of the wheels of the motor vehicle fitted with anti-slip devices, the inner and outer shoulders 3 and 4 with respect to the motor vehicle, and the inner and outer sides 5.
and 6 are shown.

The anti-slip device consists of two identical parts 10 and 20
These parts enclose opposite parts of the wheel. Each of the two parts 10, 20 has a curved piece 11, 21, a strip 12, 22 and two transverse chains 13 and 14 or 23 and 22 connecting the curved piece and the strip 11 and 12 or 21 and 22. It has 24. chain 13, 14 or 2
The distance of the curved pieces 11, 21 between the mounting positions 3, 24 is approximately 1.5 times the length of the strips 12, 22. The strips 12 and 22 each consist of a flat tube, at the ends of which chains 13, 14 are attached.
Or 23 and 24 are attached. Strip 1
2 and 22 are supported on the inner side 5 of the tire. The curved pieces 11, 21 consist of thin plates and are supported on the outside 6 of the wheel. The horizontal chains 13, 14, 23, 24 cross the tire tread 2, and the curved pieces 11, 2
1 and the strips 12, 22, which cross diagonally due to their different lengths, the tensile force of these transverse chains holds the strips 12, 22 inside the wheel, i.e. It has a force component that pulls from part 3 toward the axle. Furthermore, each of the parts 10, 20 has two strips 15 and 16 or 25 and 26 of polyurethane with a shore hardness of 89 bent across the tread 2 to facilitate installation.
and a tread chain 17 or 27 consisting of a chain part forming a long X-shape with four chain parts extending diagonally on the tread 2 and one chain part extending vertically on the tread 2. The strips 15, 16 or 25, 26 and the tread chains 17 or 27 are attached to the ends of the strips 12 or 22 and to the curved pieces 11, 21 in a way that is adjustable in length, in a manner not shown. ing. The upper ends of the curved pieces 11, 21 in FIG. 1 are connected by a chain portion 30, which is
When removing and installing the anti-skid device, it is not removed, but it is adjustable depending on the size of the wheel (not shown). The lower ends of the curved pieces 11, 21 are removably connected to each other and are connected by an automatic retightening device. The tightening device has a tension chain 54, one end of which is attached to a tension spring 50 (or an elastic band) fixed to the curved piece 21. The tension chain 54 is guided around a roller 52 supported on the curved piece 21 and around a roller 55 supported on the curved piece 11, with the other end of this tension chain supported on the curved piece 21. It is attached to one arm of the two-arm lever 53. Lever 5
3's other arm is configured as a claw. The nails are
The pawl engages the tension chain 54 advancing through the roller 52 and engages in such a way as to prevent movement of the tension chain 54 acting against the force of the tension spring 50 . The pawl together with the roller 52 forms an automatic pawl restraint mechanism, which pawl pulls the chain 54 towards one lever arm, thereby releasing one of the chain members attached to the roller 52.
Get into one. On the other hand, the claw has a tension spring of 50
does not prevent the movement of the tension chain 54 in the direction of
The tightening devices 50 to 55 are connected to both curved pieces 11, 2.
1 can be tightened in sequence. Re-tightening device 50
to 55 are both anti-slip device parts 10,2
Prevents the 0 from loosening due to slight movement while driving. On the contrary, this retightening device acts on the motor vehicle in such a way that the two anti-slip device parts 10, 20 are increasingly attracted to each other during driving and are thereby tightened even more tightly against the wheels of the motor vehicle. In order to remove the cleat part 10, 20 from the motor vehicle wheel, the free end of the tension spring 50 is removed from the bending piece 21 and the tension chain 54 is then removed from the roller 55.

In the removable coupling means according to another embodiment shown in FIG. It is fastened to the lever arm. The end of the longer lever arm is locked to the curved piece 21.

Each of the four transverse chains 13, 14, 23, 24 consists of three chain parts, the size and attachment of these chain parts are explained in detail below in the example of the transverse chain 23, and a portion of this transverse chain is shown enlarged in FIG. Three parts of the chain 23, namely a long part 34 and two short parts 35 and 36 of the same length, are attached to the tire 1 by means of an annular chain member 37.
are connected to each other on the tread 2 of the. Each long portion 34 extends to the end of the curved piece 21.
Both short portions 35 and 36 extend alongside each other at the ends of the strip 22, the end pieces 38,
39 are two lines placed side by side with a distance between them.
Each of the two pins 40 and 41 is wrapped. pin 41
extends between both parallel parts of the strip 22;
The pin 40 is placed laterally and away from the tread 2.
These strip sections extend between two protruding plates 42, only one of which is visible in the drawing. The axes of pins 40 and 41 lie in a plane perpendicular to strip 22. As a result, the distance between the pin 40 and the annular member 37 remains constant even if the strip 22 moves slightly during running.
and the annular member. Due to the different distances between the pins 40 and 41 and the annular member 37, one of the two chain parts 35, 36 of the same length;
That is, only part 36 absorbs the tensile forces applied to the wheel between the two strips. As a result, the chain part 35 rests loosely on the tire, and the part 36 rests firmly on the tire. Chain member 4 of section 36
It can be seen that number 3 wears out the most. This is because this chain member 39 is held substantially fixedly in a position protruding from the tire tread, while all other chain members also have a corresponding member 44 in the loosened section 35. This is because it moves a little and can therefore adapt to snow-free roads.

When the chain member 43 of the transverse chain 23 breaks, the hitherto loose part 35 takes over the function of the broken part 36, i.e. this part 35 absorbs the tensile force between the strips 21 and 22 and prevents slipping. The device remains attached to the wheel. The free end of the larger of the two folded cuts then hits the wheel cover of the vehicle during the rotation of the wheel. This caused the driver to immediately stop the vehicle and remove the defective anti-skid device. (Figure 4 shows horizontal chain 1
(Two folded portions 36', 36'' of part 36 of 3 are shown.) The chain portions 35 and 36 are of different lengths or of different materials and are placed in the same position at the end of the strip 22, e.g. They can be attached by a common annular chain member.

The anti-slip device is installed as follows. That is, the two parts 10, 20, which are connected to each other by the chain 30, are caught in the curved pieces 11, 21, expanded and placed over the wheel. In this case, the bands 15, 16, 25 and 26 are connected to the strips 12, 22.
elastically at almost the same height and curved pieces 11, 12
Since the strips 12 and 22 are held at a distance from
can be guided inside the wheels without having to touch these strips or reach into the wheel covers. In that case, the tension chain is
Arranged around a roller 55 which is supported on the curved piece 11, the free end of the tension spring 50 is hooked onto the curved piece 21 in the position provided for this purpose, and the tension spring and tension chain are tightened. As mentioned above,
The retightening devices 50 to 55 automatically tighten the two anti-slip device parts 10, 20 more and more tightly to the wheels of the motor vehicle during driving. In a further embodiment according to FIG. 5, the chain 31 is pulled onto the curved piece 21 by means of a clamping lever 32, which is then locked onto the curved piece 21. In this case, retightening is not performed during driving.

In the embodiment described above, the tensioning means chain 13,
14, 23, and 24 are not flexible. Obi 15,1
Only 6, 25, and 26 are flexible. However, in principle, instead of chains 13, 14, 23, 24, flexible belts or bands can be used;
In that case bands 15, 16, 25, 26 are omitted.
But chains 13, 14, 23, 24 and another belt 15,
16, 25, 26, the tensioning means fulfills its role, i.e. to maintain both strips 1 during running.
1, 12 or 21, 22 and that the strip can be configured optimally during installation for its role, ie for guiding the strip 12 or 22 inside the wheel. .

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a non-slip device for an automobile wheel seen from the outside of the wheel, Fig. 2 is a perspective view of the anti-slip device seen from the inside of the wheel, and Fig. 3 is a part of the anti-slip device. FIG. 4 is a perspective view of a part of the anti-slip device after the chain breaks on the tire tread, and FIG. FIG. 7 is a perspective view of another embodiment of the anti-slip device. DESCRIPTION OF SYMBOLS 1... Tire, 2... Tread, 6... Outer side of wheel, 11, 12, 21, 22... Support member, 1
3, 14, 23, 24... tension means, 15, 1
6, 25, 26... Obi, 30-32, 50-55
...Connection means.

Claims (1)

Claims: 1. The anti-slip device comprises two rigid support members 11, 21; 12, 22 of different lengths and two tensions of at least approximately the same length connecting the ends of both support members. Means 13, 14; 23, 2
4 and at least one of the two tensioning means 13, 14; 23, 24 or at least one of the supporting members 11, 21; 1
Two additional means include the shorter support member 12;
2 on the longer support member 11; 21, and connecting means 30 to the longer support member 11; 32; 30, 50
Removable anti-slip device for a wheel, characterized in that ~55 is provided so that the longer support members 11, 21 of both parts 10, 20 can be connected to each other. 2. The shorter support members are strips 12, 22;
characterized in that the longer support members are curved pieces 11, 21, the distance of which, measured between the attachment points of the tensioning means 13, 14; 23, 24, is greater than the length of the strips 12, 22; The anti-slip device according to claim 1. 3. The tensioning means are chains 13, 14; 23, 24, each part 10, 20 being provided at a distance from each other and extending from both support members or curved pieces 11, 21.
and two additional curved strips of flexible material 15, 16; 25, 26 joining the strips 12, 22;
An anti-slip device according to claim 1 or 2, characterized in that the anti-slip device has: 4 both curved strips 15 of each section 10, 20,
16; 25, 26 are adjustable in length and are attached to the longer support member or curved piece 11, 21. Anti-slip device according to claim 3. 5 Bands 15, 16; 25, 26 have shore hardness of 80-
Anti-slip device according to claim 3 or 4, characterized in that it is made of plastic with a Shore hardness of 100, preferably polyurethane with a Shore hardness of 89. 6 Both parts 10, 2 that wrap the opposing wheel parts
0 each has a non-slip chain 17, 27 formed from a plurality of chain parts, and this non-slip chain is
Both support members or curved pieces 1 of parts 10, 20
1, 21 and the strips 12, 22, extending between the two tensioning means 13, 14; 23, 24. . 7. The coupling means 30, 50 or 55 have an automatic tightening device 50 or 55 which engages the two longer support members or curved pieces 11, 21 and which takes the load of the tension spring 50. and a second tensioning means 54 that sequentially tightens both support members or curved pieces 11, 21, and a restraining mechanism 5 that stops the movement of the second tensioning means 54 acting against the tension spring.
2. Anti-slip device according to claim 1, characterized in that it has a diameter of 2.53. 8. The restraint mechanism is a claw restraint mechanism 52, 53, and the second tensioning means is a chain 54, one end of which is a tensioning member fixed to the longer support member or curved piece 21 of one part 20. The other end of this chain 54 is fixed to one arm of a two-armed lever 53 and is guided around a roller 55 mounted on a spring 50 and supported on the longer support member or curved piece 11 of the other part 10. , this lever is supported on the longer support member or curved piece 21 of one part 20, and the other arm of this lever is configured with the pawls of a pawl restraining mechanism 52, 53, which pawls engage the tension spring 50 and the roller 55.
8. The anti-slip device according to claim 7, wherein the anti-slip device engages with the chain portion between. 9. The coupling means 30 to 32 are connected to a clamping lever 32 which is pivoted to one of the two longer support members or curved pieces 11, 21, and which is hooked with one end on this clamping lever 32 and with the other end on both. and a tensioning means 31 which is hung on the support member or the other 11 of the curved pieces 11, 21,
An anti-slip device according to claim 1. 10 Tensioning means 13, 14 emerging from the ends of the shorter support members or strips 12, 22; 23, 2
Anti-slip device according to claim 1, characterized in that each part of 4 is formed by two tensioning means parts 35, 36 extending alongside one another. 11 each tensioning means 1 formed by two tensioning means parts 35, 36 extending alongside one another;
Anti-slip device according to claim 10, characterized in that the length of the sections 3, 14; 23, 24 is a small fraction of the total length of these tensioning means sections. 12 Chains forming tension means 13, 14; 23,
Both chain portions 3 of 24 extend alongside each other.
One end member 38, 39 of 5, 36 is attached to the end of the shorter support member or strip 12, 22, and the other end member engages a chain member 37, which chain member 13, 14; patent characterized in that it forms an end member of a remainder 34 of 23, 24, the other end member of this remainder 34 being attached to the end of the longer support member or curved piece 11, 21; The anti-slip device according to claim 10. 13 Both chain portions 3 extending alongside each other
Each chain formed by 5,36 13,14;2
Claim 11, characterized in that the part 3,24 is shorter than the remainder 34 of the chain, which remainder is configured as a simple chain part 34.
The anti-slip device according to item 1 or 12. 14. One end of the two chain parts 35, 36 which extend alongside each other and whose ends are widened or each have a lateral projection 42 of the shorter support member or strip 12, 22; Part 3
8, 39 are the ends or protrusions 42 of the shorter support members or strips 12, 22 at a distance from each other.
The anti-slip device according to claim 12 or 13, characterized in that the anti-slip device is attached to. 15. Both chain parts 35, 36 are of the same length, and one end member 38, 39 of these chain parts
but the shorter support members or strips 1 are aligned next to each other.
15. The anti-slip device according to claim 14, characterized in that the anti-slip device is attached to the ends or protrusions 42 of 2, 22. 16 one end piece 38 , 39 of both chain parts 35 , 36 of the same length lies in a plane approximately perpendicular to the shorter support member or strip 12 , 22 at a position 40 , 41 at the end of the strip; or protrusion 4
16. The anti-slip device according to claim 15, characterized in that the anti-slip device is attached to 2. 17 The lateral projections 42 form curved bands 15, 1 on the shorter support members or strips 12, 22.
6; Anti-slip device according to one of claims 14 to 16, characterized in that it projects on the side remote from 25, 26. 18. Anti-slip device according to claim 10 or 11, characterized in that the lengths of the two tension means sections extending next to each other are different. 19. Anti-slip device according to claim 10 or 11, characterized in that both tensioning means parts extending alongside one another are made of different materials.