EP2822785A1

EP2822785A1 - Device for fastening an anti-skid chain

Info

Publication number: EP2822785A1
Application number: EP13706405.1A
Authority: EP
Inventors: Werner Preusker
Original assignee: Confon AG
Current assignee: Confon AG
Priority date: 2012-03-06
Filing date: 2013-01-17
Publication date: 2015-01-14
Also published as: KR20140140575A; CH706195A1; WO2013131199A1; US20150290987A1

Abstract

The invention relates to a fastening device for an anti-skid chain (3), said device comprising a washer (23) having a clamping device (25) arranged thereon. The clamping device (25) is designed to draw a tension element (27) through a bore (31) lying at radial distance from the centre of the washer (23). The end of the tension element (27) is attached to a wheel bolt and draws the washer (23) towards the anti-skid device (3), wherein the tensile force of the tension element (27) runs axially with respect to the wheel bolt.

Description

The invention relates to a device for fastening a non-skid chain

Fastening a skid chain on a vehicle wheel according to the preamble of patent claim 1.

To prevent the spinning or sliding of drive wheels of vehicles on ice and snow and to increase the friction during braking are

Anti-skid devices of various types are known. The most common type are chains that rest on the tread of the tire and are held on the tire in various ways.

In order to simplify the assembly of the chain or anti-slip device, it is known from EP 0 460 782, the circumferential, annular chain, which usually consists of two

Chain strands arranged at intervals

Link members is to hold star-shaped arms and to attach the star-shaped arms to the rim or on one of the wheel bolts. It is also known, such anti-skid devices on a, at least during the cold season, firmly connected to the rim plate by suitable mechanisms connect to. In the latter embodiment, it is very easy for inexperienced vehicle drivers, the

Anti-slip device to be mounted on a wheel in less than a minute. With the advent of aluminum rims, especially so-called sports rims, it is often undesirable for aesthetic reasons to have permanently mounted a plate over the rim. For this reason, the first-mentioned devices have come on the market, which allow a connection of the holding arms with only one of the wheel bolts.

From practice it is known that when driving the chain runs after the wheel, i. The speed of rotation of the wheel is several percent greater than that of the chain. This means that the chain or arms to which the chain is attached, must not be firmly connected to the rim. It is necessary that the

Connection between the arms or straps, which carry the chain and the rim is rotatable about the wheel axle. This problem is solved in that the connection of the bracket is complicated with one of the wheel bolts, because in the known devices, a tension element, e.g. a rope or band from the middle, i. the

Center of symmetry of the bracket, is guided to one of the wheel bolts to hold the anti-skid device to the rim can. For this purpose, a fixing element (adapter) is fixed with a thread on one of the wheel nuts, which remains in the cold season on the bike. On the Thread becomes a tubular axial extension

screwed at the free end of a lever arm is rotatably mounted, which lever is aligned radially to the rim center. At the free end of the lever arm, which must come to lie substantially in the axis of rotation of the wheel, the centrally acting tension member is attached.

Due to the slippage of the chain on the tire, the stirrups move past the wheel bolts and also past the wheel bolt with the lever arm attached to it. This needs to be a sanding on the edges of expensive aluminum or

To prevent magnesium rims, an extension attached, which raises the lever arm on the outer edge of the rim. This creates when clamping the

Anti-slip device on a wheel always a radial outward force on the wheel bolt, which is reinforced by the relatively large length of the extension sleeve, ie the axially extending lever. In addition, alternating loads on the wheel bolt caused by the permanent circulation of the anti-skid chain on the tire. Another disadvantage of this known device is that the attachment of the sleeve or attached radially extending lever with each mounting the chain is quite cumbersome and the assembly is greatly hampered by the elements of the anti-skid chain, in particular the bracket. An object of the present invention is therefore to provide an anti-skid chain, which can be easily connected to the wheel and attached to this tired. Another task is the

Form anti-skid chain so that in the times when the anti-skid chain is not mounted on the wheel no axially projecting and therefore dangerous elements protrude far outward and also affect the visual impression of the wheel.

This object is achieved by a device according to the features of claim 1. Advantageous

Embodiments of the invention are described in the dependent claims.

Due to the arrangement in which the tensile force of the tension element takes place on the at least one wheel bolt axially to this, can radially acting on the wheel bolt

Weighing loads are avoided. Furthermore, it is possible, the anti-skid chain in no time and without the aid of tools and without effort

to mount. The automobile operator has to hang only the suspension element on the adapter and then the

Tension the tension element. This allows the

Anti-skid chain even at worst

Winter conditions in a few seconds on the

Apply vehicle tires and securely fasten there. The vehicle is thus only a very short time in the

Standstill.

The advantages of the second embodiment are that the tension element of the tensioning device can act directly or approximately directly in the center of rotation of the wheel, because the attack is not on a single wheel bolt, but each on a two diametrically opposed wheel bolts connecting bridge, which on the two Adapter can be attached without tools. This means that again either in advance of the cold season or generally only once two

Wheel bolts Adapter supplied with the chain, put on and then the chain can be attached to the wheel completely tool-free. Again, the adapters are not axially over the rim and thus do not hinder the aesthetics of the rim.

Reference to an illustrated embodiment, the invention is explained in detail. Show it

Figure 1 vehicle tire with one on it

attached anti-skid chain,

Figure 2, the anti-skid chain with the on a

Holding plate formed retaining clips and the chain strands between the ends of

Hanger, FIG. 3 shows a plan view of a tensioning device mounted on a circular disk;

Figure 4 is a perspective view of the disc with the clamping device and a

tension element,

Figure 5, the anti-skid chain with the on a

Retaining plate formed retaining clips and the chain strands between the ends of the bracket with attached clamping device,

FIG. 6 shows an axial cross-section through a tire with a device according to the invention for fastening the anti-skid chain,

7 shows an axial cross section through the prior art according to EP 0 460 782, ^■

Figure 8 is a plan view of a retaining plate for

plug-in wire headband after the

Punching / before bending,

FIG. 9 shows a side view of an upright wing for a wire retaining clip,

10 shows a cross section through the wing, according to

Fig. 9,

Figure 11 is a side view of a

Connecting element,

Figure 12 is a plan view of the connecting element, Figure 13 shows a cross section through the

Connecting element along line XIII-XIII in Figure 11, FIG. 14 shows a side view of the retaining clip,

FIG. 15 is a plan view of the retaining clip,

Figure 16 is an axial section through a wheel with patch on the rim device and Figure 17 is a schematic plan view of a tire with a mounted on two wheel bolts

Fastening element.

On a vehicle tire, in short tire 1, a skid chain 3 is shown in Figure 1 in perspective view. The term anti-skid chain 3 in the present invention comprises two chain strands 5, which in the illustrated example rest partly parallel, partly V-shaped, on the tire tread. The two chain strands 5 are held by transverse webs 7, on which spikes 9 are arranged at a distance. On a retaining plate 11, which is arranged frontally to the tire 1 and is located above a rim 13, for example, four retaining bracket 15 are pivotally mounted. The retaining bracket 15 extend over the edge of the tire 1 in the tread of the tire 1 in and wear and position the two chain strands 5. In the center of the support plate 11 is a circular

Well 17 formed in the center of a

circular opening 19 is located. The diameter D of the circular opening is larger than the diameter of the bolt circle for the wheel bolts 21 on the rim 13. Die Previously described elements of the anti-skid chain 3 are known from the prior art. Such

Anti-skid chains are manufactured by Confon AG, CH-9424 Rheineck.

To attach the anti-skid chain 3 on a tire 1 or a vehicle wheel, is on a

circular disc 23 whose diameter is smaller than the diameter D of the recess 17, a clamping device 25 attached. The tensioning device 25 comprises a rope drum, not visible in the figures, and a spring connected to the cable drum, which receives a tension element 27 and is inserted into the housing by the spring

Clamping device 25 retracts when an acting on the tension member 27 pull-out force decreases. The clamping device 25 further comprises a button 29, with which the drum on the one hand against further extension of the tension member 27 and on the other hand against the pulling of the tension member 27 by the force of the spring lockable or the lock is releasable. Clamping devices 25 of the illustrated

Genus are commercially available. Their structure may also be different, e.g. one by a hand crank

driven drum for tensioning the tension element 27 or, if the tension element 27 is formed strip-shaped, the take-up drum can also be actuated by a known from DE 8 132 887 Ul ratchet. The tension member 27 penetrates the disc 23 at a radial distance e to the center of the disc 23 in a guide bore 31. The radial distance of the bore 31 from the center of the disc 23 substantially corresponds to the radius of the bolt circle for the wheel bolts 21 in the rim 13 of the wheel ,

At the end of the tension member 27 is articulated a

Hitch 33 attached. Preferably, the suspension device 33 is suspended in a loop 35 of the

Tension element 27 or in an articulated connection between tension element 27 and 33 hanging device

permitting ring. Another advantage is between

Tension element 27 and 33 hanging device

Stopper element 37 is used, which on the one hand abuts the underside of the disc 23 when the tension member 27 is pulled by the tensioning device 25 and on the other hand it facilitates the handling of

Suspension device 33, when the latter is pulled out of the tensioning device 25 when fixing the anti-skid chain 3 with a wheel bolt 21 or with a fixing element 39 fastened to the wheel bolt 21. The fixing element 39, which is fixed in a known manner on the head of a wheel bolt 21, for example, includes a

bell-shaped body, in which radially inwardly acting clamping elements can be activated by means of a clamping screw, so that the bell-shaped body is attached to the head of the screw 21 inextricably. Above that bell-shaped body, for example, a pin is formed with mushroom-shaped end, in which the

Hooking device 33 can be suspended and then held inextricably by the train of the tension element 27. To a caused by vibrations and the like

To prevent falling out of the suspension device 33, in the latter, for example, a keyhole-shaped punch-out 41 is attached, through which the head of the

Wheel bolt 21 can be passed.

Hereinafter, the fixing of the anti-skid chain 3 on a vehicle-mounted and resting on the ground tire 1 will be described in more detail.

The anti-skid chain 3 is slid substantially axially from the outside onto the tire 1, i. all four headband 15 shown in the example overlap the

Flank of the tire 1 and push the chain strands 5 outside in the contact area with the road on the

Tire tread. The two chain strands 5, which extend between the two brackets 15, which lie in front of and behind the support region of the tire 1 on the ground, remain in the region of the tire sidewall. Now, the disc 23 on the jig 25 by hand

held and the hanging device 33 at the end of

Tension element 27 is attached to the fixing device 39, which is attached to one of the wheel bolts 21 in the winter half-year. By pressing the button 29 is the Arresting in the tensioning device 25 is released and the tension element 27 retracted into the latter, that is wound on a drum. Or the tension element 17 is tensioned in a different way. By the force of the tension member 27 and the tension spring used in the tensioning device 25, the disc 23 in the recess 17 on the

Retracted retaining plate 11 and thereby pulls the

Holding plate 11 with the brackets 15 axially to the tire 1. By a corresponding actuation of the button 29 or by a Rätschenanordnung the clamping element 27 can be kept in the retracted position.

After a few meters drive, the two chain strands 5, which were initially still on the tire sidewall, lay over the tire tread.

The force of the tension element 27 acts axially to the wheel bolt 21 and there are no disturbing alternating loads caused by the wake of the anti-skid chain 3 on the tire 1 in the radial direction on the wheel 21 and the fixing element 39 placed thereon.

To remove the anti-skid chain 3 from the wheel, only the tension of the tensioning device 25 has to be canceled and the

Hanging device 33 are posted on the fixing element 39. For comparison with the above-mentioned prior art according to European Patent 0 460 782 is a cross-section through the known device in Figure 7 shown. Therein, the different course of the tension element 31 can be seen, which does not engage axially and not directly on the wheel bolt 21, but on a pivot bearing 47 at the end of a lever 43, which bridges the radial distance between the axis of the wheel bolt 21 and the axis of rotation of the wheel. In addition to an axial extension piece 45 at the end thereof, ie

be formed between the lever 43 and the extension piece 45, a further rotary joint. Furthermore, it can be seen that the tension member 31 is not directly connected to the wheel bolt 21 during assembly of the anti-skid device, but that the pull element 31, the lever 43 must be rotatably mounted and then the free end of the lever 43 in a complicated way - in cold

Winter temperatures and snowfall only with great effort possible - with the wheel bolt or the extension piece 45 must be attached to the same. The

Extension piece 45 must also have a large axial length, so that the lever 43 does not come into contact with parts of the rim when the antiskid element rotates while driving on the tire and the lever 43 in turn is rotated about the axis of the wheel bolt 21.

In one embodiment of the invention, but without the advantages of a coaxial action of the tensioning device 25 on the wheel bolt 21, this could on the holding plate 11 of a trained in the prior art Anti-slip device are placed. Such a type patch tensioning device 25 is shown in the representation of the prior art according to Figure 7 in broken lines.

In another embodiment of the invention, the tensioning device can also be connected to the central screw or nut with which the wheel attachment is attached to the wheel suspension, so that an axially extending tension is ensured.

As an alternative to the tensioning device 25 with a spring, a ratchet, a winch or another device exerting a tension on the tension element 27 could also be provided.

In a further embodiment of the invention, the free end of the tension element 27 engages a connecting element 49 which connects the two head parts 51 of the two mutually opposite adapters 39 like a bridge (FIG. 16). The end of the tension member 27 is secured to a rotatable tab 55 or other suitable rotatable connection producing member.

Subsequently, the individual elements of the device are described in more detail. In Figure 8 is partially folded as a settlement and partially already folded, the holding plate 11 shown for bracket 55. This is when using four retaining brackets 55, cross-shaped, designed with five brackets according star-shaped, ie there are radially out of the center Z out four, five or six arms 57 (Figure 8). The edges 59 of the arms 57 are bent by 90 °, so that a "U ^w is formed (see FIG. 10).

Between the edges 59, two or more tabs 61 may be formed, which are also bent, so that between the edges 59 and the bent-up tabs 61 spaces 63 arise, which guide the wire holding bracket 65 side. The wire retaining stirrups 65, as shown in FIGS. 14 and 15, have an U-shaped configuration and their ends 67 are bent at right angles outwards or U-shaped outwards and backwards. The ends 67, when attached to the support plate 11, penetrate the edges 59 in bores 69 formed therein (see Figures 9 and 16) or at an angle

Slots. The wire retaining clips 65 can be inserted tool-free by compressing their legs 65 ^Λ between the edges 59 and then, adapted to the diameter of the rim 13 in the appropriate, opposing holes or slots 69 are mounted. The wire hanger 65 remain in it thanks to the

Compress held built-up voltage, even if they are folded up when not in use to the axis Z, to stow the device in a small space. The wire hanger, as shown in Figure 14, a cranked shape or they may be straight.

In the center of the holding plate 11 is an opening 71st

formed by which the tension element 27 of the

Clamping device 25 for rotatably mounted on the connecting member 49 tab 55 can be passed.

As the connecting means of the tension member 27 with the rim is only the connecting element 49. The latter can be used without tools on two each other (at 5-Lochfeigen) in

Substantially diagonally opposite adapters 39 are pushed (see Fig .. 17). For 6-hole rims on two adapters lying diagonally 39. Suitable trained detents (not shown) hold the once deferred connecting element 49 while driving safely to the

Adapters 39 firmly. The detents are elements, e.g.

Spring tabs that prevent a displacement of the connecting element 49 on the two adapters 39.

Instead of the retaining plate 15 or wire bracket 65 described in FIGS. 8 to 10 and 14 and 15, a retaining plate 11, as has been described in the first exemplary embodiment (FIGS. 1 to 7), can also be used. Likewise, a holding plate, as known from the prior art, for example in EP 0 460 782 or such, as in the CENTRAX model the company Rud, the Trak Sport of the company Maggi Catenesta or K-Summit of the company Toole are known. All the above-mentioned holding plates 11 can be connected by the inventive connecting element 49 with the rim 13, without the need for a slippage of the chain 3 on the wheel balancing, on a wheel 21 rotatably held element is needed. The

Connecting element 49 or the fastening tab 55 or another element enabling a rotation relative to the connecting element 49 lies in the case of rims with six

Holes for the wheel bolts exactly above the axis of rotation of the wheel, slightly offset in frequently occurring five holes. However, this slight eccentricity of the tab 55 is negligible.

Claims

claims

1. Device for securing a

Anti-slip device on a vehicle wheel,

comprising a non-skid chain (5), which are held in position by a plurality of retaining clips (15, 65) fastened in a star shape to a retaining plate (11), a tension element (27) which winds up and / or against the tension element (27) tensioning certain tensioning device is connected, one at the free end of the tension element (27) mounted suspension device (33,49) for connecting the free end of the tension element (27) with an adapter 39 on a

Wheel bolt (21),

characterized in that

the tension element (27) with at least one

Adapter (39) on a wheel bolt (21) is connectable, that the tensile force direction of the tension element (27) substantially in the axis of the at least one

Wheel bolt (21) is located.

Apparatus according to claim 1, characterized in that the holding plate (11) for the bracket (15) has a central circular opening (19) which is arranged in a circular recess (17) of the holding plate (11), and that the tensioning device ( 25) on a in the recess (17) insertable Disc (25) is placed and the tension element (27) penetrates the disc (23) in a bore (31), which bore (31) radially outside the

Symmetry center Z of the disc (23), wherein the radial distance R of the bore (31) from the wheel center Z corresponds to the radius of the bolt circle in the wheel rim (13), such that the tensile force of the

Tension element (27) acts axially on the wheel bolt (21) or acts.

Apparatus according to claim 2, characterized in that the suspension device (33) on one connected to the wheel bolt (21) adapter (39) is formed without tools suspended.

Apparatus according to claim 3, characterized in that the adapter (39) has a similar axial length 1 as the head of the wheel bolt (21) and, mounted on the wheel bolt (21), one of the outer edge of the wheel rim (13) formed plane E does not penetrate.

Device according to one of claims 3 or 4, characterized in that the suspension device (33) has a keyhole-like opening (41), which allows the tool (11) to connect the tension element (27) with the adapter (39) on the wheel bolt (21). Apparatus according to claim 2, characterized in that the disc (23) with the clamping device (25) in the opening (19) on the holding plate (11) is rotatable.

Device according to one of claims 2 to 7, characterized in that as clamping device (25) a ratchet, a winch or other a train on the tension element (27) performing device is used.

Apparatus according to claim 1, characterized in that the free end of the tension element (27) is rotatably connected to a rod-shaped connecting element (49), which connecting element (49) at two approximately or exactly diagonally opposite

Wheel bolts (21) is determined attack.

Apparatus according to claim 8, characterized in that the connecting element (49) on two on two wheel bolts (21) attached to adapters (39) einhängb or pushed on.

Apparatus according to claim 9, characterized in that the connecting element (49) has at least at its ends a c-shaped cross section and the two edges (59) of the c ~ shaped connecting element (49) in circumferential recesses on the adapters (39) are intended to intervene.

Apparatus according to claim 10, characterized in that on the connecting element (49) locking means for

Locking the connecting element (49) on the

Adapters (39) are formed.