DE8337510U1 - LOCK FOR SIDE BRACKETS OF ANTI-SLIDING CHAINS - Google Patents

Description

GEYER ,. WACPMANfti & * throat.

EUROPEAN PATENT ATTORNItYS Isn.-aninger SUaRe 108 ■ 8000 Munich 80 - Telephone D 089 / 980731-34 ■ Telex 5216136 hage d ■ Telegram: hagcypatrnl ■ Fax 089 ^ B 24 21 Automat (CCITT Cr Postal address: P.O. Box 860329 ■ 8000 Munich 86

Acciaierie Weissenfeis S.p.A. Munich, the Fusine Valromana / Italy December 28, 1983

U. Z.i GM 241/37-ß3M Dr. G / 2 / ho

Closure for side bars of anti-skid chains

The innovation relates to a closure designed in the form of an open, inherently rigid ring for assembly Spreadable side brackets for anti-skid chains for vehicle tires, consisting of two each at one end of the Side bracket attached support bodies, which are in the locked position are designed to be interlocked with one another in a form-fitting manner, one being provided on a support body Latching edge serves as a stop for a closure body attached to the other support body.

10

Anti-skid chains for vehicle tires, in which at least one inner side bracket for the attachment of over the Tire tread extending chain strand sections to facilitate assembly are used have been known for a long time and have recently been widely used. For such side brackets will be multiple ring-shaped spring steel brackets or steel ring brackets consisting of individual parts that are articulated to one another are used / in which However, a manually achievable increase in the diameter of the relevant side bracket is possible is: with spring steel brackets this happens in the form that the spring steel bracket is gripped on both sides with the hands, bent apart, then put over the tire and released again behind the tire / whereupon it is in springs back to an inherently stiff starting position. At sol-

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chen stirrup constructions in which some are articulated to one another fastened parts are used to form the side bracket lying on the inside of the wheel, takes place the diameter expansion for the assembly in such a way that corresponding items by manual rotation be pivoted radially outward about their respective hinge points so far that the remaining bow shape allows it to be easily slipped over the tire. After this Put them over the tire then quite simply outwardly folded sections of the inner side bracket released, causing them as a result of elastic biases automatically jump back into their assembly position at the pivot points.

¹ ^ There is a large number of closures for such side part Ie von'Gleitschutzketten known, the structure of such closures partly also from the construction of the entire chain or the inner side bracket used; depends. For example, tension locks are known which can be operated from the outside of the tire (tension chain locks). With such closures it is avoided that after the chain has been placed, the closure of the closure around the vehicle tire is avoided. On the other hand, however, these closures have the disadvantage that after the first application and tightening, the vehicle has to be moved forward (even if only a little), after which it is then necessary to re-tension the closure.

Other known closures that do not depend on usability is parked from the front, consist essentially in that two individual support bodies are provided, which are formed interlocking positively in the closed position. One is used on a support body provided locking edge as a stop for a closure body attached to the other support body. In the simplest Design, this looks like that the one supporting body

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is designed as a hook, the plane within which the hook shape is formed being essentially parallel is directed to the clamping plane of the side bracket, while the other support body as a correspondingly shaped There is an eyelet that can be manually hooked into the hook. However, since there is a risk here of such a thing hooked hook / Ösön lock is in the locked position Can open under unfavorable conditions, a further solution provides that the radially oriented Hook is provided with a closure element that can be slipped over the hook opening, so that after hanging of the hook, the hook opening is closed by slipping this element over it, making it an undesirable one Slipping out of the eyelet from the hook is safely avoided.

The latter type of closure is, however, relatively complicated shaped and also very difficult to use, because here behind the tire of the operator not only a- ^ must be hooked, but then manually folded over the securing element over the hook opening must become.

In the case of such closures that cannot be operated from the front, the innovation now sets in: there should be a closure of the initially introduced mentioned type are created, which has a secure locking effect even under favorable conditions at the same time achieved particularly easy handling, which is simply constructed and particularly economical to manufacture is. According to the innovation, this is achieved in a closure of the type mentioned in that each Support body is provided both with a locking edge and with a locking body, the locking edges and the closure bodies are arranged mirror-symmetrically to one another on both support bodies, furthermore the closure body is attached to the ends of the support body facing one another and on the ends thereof facing away from the tire flank Side as opposed to the closing direction

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* Gene open hooks are formed, and that in the locked position cover the facing end regions of the two support bodies lying next to one another. Both support bodies are preferably designed in such a way that, in the assembled state, they are essentially one with respect to one another Have mirror-symmetrical shape.

The innovation creates a simply constructed lock in which each support body is designed so that it glides

¹ ^ rather the function of the "hook" as well as that of the "eyelet" can exercise: this makes the assembly much easier, since after slipping the side bracket over the vehicle wheel, only a manual moving together of the two side sections of the bracket in the direction of a closing movement is required is. Due to the fact that according to the innovation on the facing end sides of the supporting parts against the locking direction bent hooks are formed, which are also no longer - as before are aligned radially, but in a perpendicular plane, and additionally through the measure according to the innovation of a mirror-image alignment of both these hooks on the support bodies to one another, as well as the associated locking edges to one another, allows the effect to be achieved that in the event of a locking movement, the hooks with their hook curves initially run against one another. Since with such side brackets it is not necessarily guaranteed that the closure parts run precisely aligned towards one another in the same plane, but rather since it can easily happen that the two support bodies run towards one another somewhat laterally offset to one another during a closure movement, when the two curves meet, the Hook ensures that the two support bodies are laterally deflected from one another and guided until the hook of the inner (ie closer to the tire flank) support body engages in the corresponding locking edge of the other support body, in the

Acciaierie Weissenfeis S.p.A. GM 241 / 37-83M

-δι specific assembly case this can lead to once one support body, but perhaps the other support body in this sense "on the inside" during the next assembly is what, however, does not lead to any difficulties and always creates a reliable locking effect in any case. The support bodies for such a closure according to the invention can be produced in a very simple manner, have no mutually movable or pivotable parts and lead, once in the locked position brought to the desired functionally reliable closure of such a side bracket.

An advantageous embodiment of a closure according to the innovation consists in that each support body has a plate-shaped (i.e. essentially flat) section has, which is bent hook-shaped at its end facing the other support body and in its area provided with an opening outside the hook-shaped bend is through which the hook-shaped bent end of the other support body engages in the closed position. Through this a particularly simple and particularly effective shape can be achieved. Another improvement can be achieved with such a closure that in the area between the hook-shaped bend and the Opening a permanent magnet is attached in the respective plate-shaped section of each support body. This will a particularly secure fit achieved in the closed position because the two support bodies are created by the permanent magnet in their laterally adjacent end regions in the closed position not only latched to one another, but rather can also be pulled sideways against each other. The strength of the permanent magnet is chosen so that On the one hand, the desired tight fit is achieved, on the other hand, the manual force required to release the lock is required / does not become inappropriately large. In such a configuration of the innovation according to

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- Q ο-Ι In conclusion, it is also advantageous if the plate-shaped section is in the area of its hook-shaped bend a continuously decreasing width towards the end of the bend has, because this makes the introduction of the hook into the opening on the other support body particularly easier. The use of permanent magnets ensures that - however the two side parts are next to each other to the plant come - with hooked side parts the two flat end sections through the permanent magnet of the section, the hook of which extends through the window of the other section, in good mutual contact being held.

Another, preferred embodiment of the closure according to the invention also consists in that each support body has a flat end section which - viewed in the longitudinal direction of the support body - is provided at its free end with an offset, hook-shaped bend directed away from the tire flank, whereby at the flat end portion at a distance of. the hook-shaped bend and in the same lateral position as this a locking edge is provided in such a way that when the closure is closed, the hook-shaped bend of the end area of the respective other side part can be hooked onto this locking edge. Here, too, as in the embodiment described above, two supporting bodies are used, in which it is ensured that a quick and good closure is achieved when the side bracket is pressed together. The desired lock and the desired locking will always be achieved safely, regardless of which of the two support bodies is to the inside and which to the outside (viewed from the tire flank ) as already mentioned, ensures that after snapping of the respective Hakena an undesirable upward

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avoided of both
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Side panels

In this embodiment, too, it is of great importance Advantage if at each end area in the flat end section in the area between the hook-shaped bend and the A permanent magnet is attached to the locking edge, with the insert in this configuration (because of the lack of an opening) a magnet with a larger area can be done. Advantageously, the locking edge is attached to its one End through the flaciien end section and at its other End limited by a guide nose, whereby a lateral guidance of the hook-shaped bend of the other side part when the same is hooked in ("sideways" is used here in the sense of sideways to the direction of movement understood the locking movement). This configuration for the support body also leads to an easily manufactured, uncomplicated, inexpensive and at the same time effective and safe lock, which ensures a relatively simple operation with great security and good functionality.

Another preferred embodiment of the closure according to the invention is that the bent hooks or the hook-shaped Uirbiegungen are arranged on both support bodies so that they are in a closure-closing movement run against each other with their curvatures facing each other. Here can be a gentle side Achieve a deflection in the closure movement which is desirable in order for the two end portions to overlap to let that the hook of one end part in the corresponding locking position on the other end part easily can intervene.

The innovation is explained in more detail below with reference to the drawing in principle for the sake of example

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Fig. 1 shows an embodiment for a

innovation according to the closure, which is attached to the inner bracket of a slide " protection device of fine snow chain) is attached (from the

seen from the inside of the window), when closed;

Fig. 2 shows a detailed representation of the in

Fig. 1 shown closure members

during the closing process (straight The inner bracket is not yet closed)>

Fig. 3 and Fig. 4 representations of two embodiments

form for closure members of a closure according to the innovation (when hooked), and

5 shows a detailed representation of the in

Fig. 4 shown closure (closure members are not yet in the closed state) during a closing movement, in a position similar

like Fig. 2.

In Fig. 1 the rear bracket is in the form of a Seitenbügelis with an anti-skid device (e.g. a snow chain) shown in a plan view of the inside of the tire, to simplify the illustration however, the tire contours as well as the track chains are omitted and only the pure bracket is shown. The deployed The inner bracket consists of a rigid central part 1 made of bent flat steel with two articulated on it Side parts attached via swivel joints 6 and 7

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2 and 3, which are also made of bent flat steel. With a small distance from the ends of the side panels 2 and 3 are attached to these handles 38 and 39, which are preferably made of a suitable plastic and not only the handling of the sliding protection device during the assembly of the inner bracket by the operator considerably simplify, but also in their location and their mass are also chosen so that the inner bracket in the same closed form in which it is shown in FIG is, with respect to its center of rotation M with respect to free inertia forces during rotation, essentially is balanced.

In the inner bracket shown in Fig. 1, at the ends of the rigid side parts 2 and 3 closure members are in the form used by flat support bodies 40 and 41, their more precise function and design in Figures 2 and 3 in more detail is shown. It should be noted that instead of the form of an inner bracket shown in FIG there is completely rigid individual elements, as well as a spring steel bracket in the form of a not as an inner bracket completely closed, dimensionally stable in its rest position, but elastically expandable for assembly and then in its original position spring-back wire bracket can be used.

FIG. 2 shows in a basic and enlarged manner how the inner bracket shown in FIG. 1 is closed the two support bodies 40 and 41 (designed in the form of flat end sections) shortly before the closing movement Reaching the closed position run towards each other (shown by two opposite side arrows) while in Fig. 3 the reaching of the locking position shown in Fig. 1 is then shown.

The two support bodies 40 and 41 are, as shown in FIG.

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or 3 can be seen, made of flat material, which at my one end, which is the associated side part 2 or 3 of the inner bracket is turned, deflected so offset by a slight bend laterally to its central section is that the relevant middle section, in which there are also openings 44 and 45, approximately in an extension of the end section of the associated side part

2 or 3 runs, as shown in detail in Fig. 2 and Fig. 3, whereby the shape shown there environment is expressly referred to here.

The flat end portions 40 and 41 are on rivets 48 on associated end of the corresponding side part 2 or 3 rigidly attached. If a well-known spring steel bracket is used for the inner bracket Should be used, then the flat end portions 40 and 41 would also be suitable to be rigidly attached to the ends of this spring steel bracket.

The other, free end of the support bodies 40 and 41 is shown in FIG. 2 b2W. Fig. 3 can also be seen in more detail Way bent hook-shaped, the hook-shaped bends 42 and 43 formed in this case, respectively the side are bent out from the sidewall of the tire on which the corresponding bracket is arranged is averted. As also from Figures 2 and

3 can be seen, the side edges 49 in the area of the hook-shaped bends 42 and 43 run from the beginning the bend to the end together that the width B (see. Fig. 2 and Fig. 3) in the area of hook-shaped bends 42 and 43 decreases continuously from the beginning of the bend to the end thereof. Here too will express reference is made to the corresponding graphic representation in FIGS. 2 and 3. Open the hooks of the bends against the locking movement of the respective support body.

The support bodies 40 and 41 are in their respective middle area, i.e. in the area between the attachment to the

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dependent side part 2 or 3 on the one hand and the hook-shaped Bend 42 or 43 on the other hand is provided with an opening or 45, which, however, lies outside the area / each of which is covered by the corresponding hook-shaped bend 42 or 43. In the area between the respective Opening 44 or 45 and 4 hook-shaped bend 42 or 43, a permanent magnet 46 or 47 is arranged on the corresponding support body 40 or 41, namely on the side of the respective flat end section 40 * 3 or 41, to which the corresponding end hook 42 or 43 bent 1st. The design of the hooks 42, 43 on the one hand and the openings 44 and 45 on the other hand each made so that - as can be seen from Fig. 2 - the hooks to each other as well as the Openings are arranged essentially mirror-symmetrically to one another on the support bodies 40 and 41. The same thing also applies to the permanent magnets 46 and 47, which are fastened to the support bodies in various forms can. However, it has proven to be particularly advantageous to use the respective permanent magnets 46 and 47 a suitable adhesive into a corresponding receiving opening within the respective end section 40 or 41 to be glued. In addition to the particularly suitable round design of such permanent magnets shown in FIG. 2 Of course, any other suitable form of training could also be used.

During the closing process, the two support bodies 40 and 41 attached to the ends of the side parts 2 and 3 are now shown in FIG moved towards one another in the manner shown in FIG. 2, the rounded end surfaces of the hook-shaped bends 42 and 43 run against each other. Under the pressure of the closing forces (either manually or from spring preloads in the swivel joints 6 and 7) occurs when the hook-shaped bends 42 and 43 run against one another a lateral deflection of the two end sections

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40 and 41 such that the one of the two in the direction of the outside of the tire is deflected laterally, while the other end portion is essentially its closing path continues. As soon as the (in the direction of the sidewall of the tire) inner end section at the further closing movement has reached the opening 44 or 45 in the other end section, the hook-shaped snap snaps Bending of the inner end section into this opening 44 or 45, in which case the closed position is reached. Each of the two openings 44 and 45 has a latching edge 4 or 5 (see. Fig. 2), which the latched hook 42 ozw. 43 serves as a stop, which reliably avoids unwanted opening of the inner bracket. Through the permanent magnet of the supporting body, its hook-shaped bend into the opening of the other supporting body hooks, a particularly good lateral contact of the two support bodies 40 and 41 is guaranteed, so that an undesired slipping out of the engaged hook from the opening is as good as impossible. If so When the vehicle tire rotates, forces occur which move the holder apart in the opening direction could, is through the engaged hook, which in the opening direction of the overall bracket against the locking edge 4 or 5 starts up, avoiding unwanted opening with certainty.

The design of the two end sections 40 and 41 in such a way that they are shaped and arranged in mirror image to one another ensures that - regardless of which section is laterally deflected when closing - the closed position (assembly end position) is always safely reached . The strength of the permanent magnets used can be selected so that a secure lateral contact of the support bodies 40 and 41 is always guaranteed in the closed position, but that when removing the corresponding bracket

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the operator does not have to use excessive disruptive separating forces.

Due to the already described decrease in the width of the respective End portion 40 or 41 in the area of the hook-shaped bends 42 and 43 is the latching of the hooks into the opening 44 or 45 in the other end section.

In Fig. 3, such a lock is in its locked position shown. Of course, there would also be the possibility of the hook-shaped bends 42 and 43 not being in the shape of a round hook (as can be seen in Fig. 2 or 3), rather, to provide such a bending curve that when the holder is closed they run against each other The outer surfaces of the two hook-shaped bends Force lateral deflection outward for a specific one of the two support bodies 40 and 41, respectively. The in the figures However, the embodiment shown has the great advantage that it remains open which of the two end hooks is deflected laterally outward, so that each of the both end sections is able to take over the hooking function, regardless of which of the two support bodies also should always be distracted to the outside when closing.

In Figs. 4 and 5, another embodiment is for the individual links of a lock according to the invention are shown, the illustration in FIG. 4 again being closed End position and the representation of Figure 5 (corresponding to the representation of FIG. 2) an intermediate position shows this support body in the closure movement shortly before reaching the end position.

In the representations according to FIGS. 4 and 5 , flat end sections 50 and 51 are used, the -'in turn over

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-Μ Ι grooves 48 - are rigidly attached at one end to the end portion of the associated side part 2 and 3, respectively. Here, too, as can be clearly seen from FIG or 51 lies approximately in the extension of the longitudinal axis of the relevant side part 2 and 3, respectively.

The support bodies 50 and 51 have a widening in their central area, within the area of which (again on the side facing away from the corresponding tire side flank) a large permanent magnet 58 or 59 is embedded. (Viewed in the longitudinal direction of the corresponding side parts 2 and 3, respectively) at the respective free end of the supporting body 50 or 51 is in each case again a hook-shaped, the tire side flank vou abgerichtete bend 52 and 53 are provided, but these bend not each DIE entire width of the corresponding support body 50 or 51, but rather is offset laterally by a length Y to the longitudinal center axis of the relevant support body (cf. - see Fig. 1 - seen from the point of view, offset radially outwards from the dash-dotted center line). Starting from the same longitudinal center line (in approximately the same lateral position to this as the corresponding hook-shaped bend 52 or 53) also a locking edge 54 or 55 is provided, which runs perpendicular to said longitudinal center line and at a distance X from the front edge of the support body 50 or 51, from which the hook-shaped bend 52 or 53 takes place, is arranged offset against the closing direction of the holder , as can be seen from FIG.

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Position of Fig. 5 is expressly referred. Also in the case of the closure shown in FIGS. 4 and 5, the locking edges are 54 and 55 on the one hand and the hook-shaped bends 52 and 53 on the other hand in each case to one another 5 arranged in mirror image on the two support bodies.

f. The locking edges 54 and 55 are, as far as their length is concerned,

ν in the figure representation according to FIG. 5 at the top, ie in the direction of the center of rotation M of the entire side bow, bordered by the protruding end part, which is provided for fastening the supporting body 50 or 51 on the associated side part 2 or 3, while at its other end a rearward (opposite to the locking direction) projecting nose 56 or 57 is provided.

15th

As shown in FIG. 5 by an arrow representation, the two support bodies 50 and 51 move towards each other during a locking movement, whereby here again, as already mentioned, essentially mirror-image configurations of the two support bodies 50 and 51 are selected, as shown in FIG 5 it can be seen to which reference is made. The two hook-shaped bends 52 and 53 run against one another with their round outer surfaces, whereby one of the two end sections 50 and 51 (viewed from the side of the tire) is deflected outward during the continued locking movement, during which the hooks -. . shaped bend of the other of the two end sections on the back of the first-mentioned section and then, after reaching the locking edge 54 or 55, immediately hooks against this. The result here is a closed position as can be seen from FIG. By the permanent magnet in the supporting body 50 (Fig. 4), the hook-shaped bend 52 is hooked, 50 and 51 ensures a Si \ 35 cheres concerns the two central portions of the supporting body to each other. The nasal one

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Projection 57 is ensured (in the case of the one shown in FIG. 10) Latch position) a certain lateral guidance of the hook-shaped bend 52, so that it is secure against the Can approach the locking edge and hook there. The shape of the nose-shaped sections 56 and 57 is like this chosen that a targeted lateral guidance of the hooking bend 52 or 53 in the direction of the locking edge can take place without discontinuities, as is the case with the design of the locking edges shown in FIGS. 4 and 5 56 or 57 is possible, with the training shown there again should be expressly referred to. In the form shown in FIGS. 4 and 5 for the support body 50 and 51, a larger area is available for attaching the magnets 58 and 59 than in the configurations, which are shown in Figs. 2 and 3, because in the designs shown in Figs. 4 and 5 of the Support body 50 and 51 as a result of the selected locking edges, the attachment of openings within the central section the support body 50 or 51 is not required.

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Claims (9)

EUROPtXW PÄ * f ENT Ismsninger Strasse 108 · 8000 Munich 80 · Telephone D 089 / 980731-34 · Telex 5216136 hage d · Telegram: hageypatent · Fax 089/982421 Automat (CCTTT Cr. 2) Postal address: Postfach 860329 ■ 8000 Munich 86 Acciaierie Weissenfeis SpA Munich, Fusine Valromana / Italy December 28, 1983 U. Z .: GM 241 / 37-83M Dr. G / 2 / ho protection claims 1. Closure for side brackets designed in the form of an open, inherently rigid ring, which can be expanded for assembly For anti-skid chains for vehicle tires, consisting of two attached to one end of the side bar Tragkcrpern, which are formed interlocking positively in the closed position, one on one Support body provided locking edge serves as a stop for a closure body attached to the other support body, thereby characterized in that each support body (40,41; 50,51) both with a locking edge (4,5; 54,55) as is also provided with a closure body (42,43; 52,53), wherein the locking edges (4,5; 52,53) and the locking body (42,43; 52,53) on both support bodies (40,41, -50,51) Are arranged mirror-symmetrically to one another, the closure body provided on the ends of the supporting bodies (40, 41; 50, 51) facing one another and on their side surface of the tire opposite side are designed as hooks (42, 43; 52, 53) bent over against the closing direction, and that in the closed position the mutually facing end regions of the two support bodies (40, 41; 50, 51) lie laterally next to one another cover. 2. Closure according to claim 1, characterized in that both supporting body (40.41, -50.51) comprise a stand in the assembled to each other substantially form spiegelsymmetrisehe gebung. • · » 9 • · 3. Closure according to claim 1 or 2, characterized in that each support body (40,41; 50,51) each have one plate-shaped portion (40,41), which at his the end facing the other support body is surrounded by a hook-shaped gene and is provided with an opening (44, 45) in its area outside the hook-shaped bend (42; 43) which in the closed position the hook-shaped bent end (42; , 43) of the other support body engages through it. 4. Closure according to claim 3, characterized in that in the area between the hook-shaped bend (42; 43) and a permanent magnet (46; 47) in each of the opening (44; 45) plate-shaped section (40; 41) of each support body (40,41, -50,51) is attached. 15th 5. A closure according to claim 4, characterized in that the plate-shaped portion (40; 41) in the region of its hook-shaped bend (42; 43) has a width (B) which decreases towards the end of the bend. 20th 6. Closure according to claim 1 or 2, characterized in that that each support body (40,41; 50,51) each have one has flat end portion (50; 51) which - in the longitudinal direction ^; direction of the support body (40,41; 50,51) seen - at his free end with a laterally offset, _c hooked of the sidewall facing away bend (52; 53) is provided, wherein on the flat end portion (50; 51) at a distance (X) of the hook-shaped bend (52; 53) and in same lateral position as this one locking edge (54; 55) is provided in such a way / that when the closure is closed the hook-shaped bend (53; 52) of the end area of the respective other side part (3; 2) on this locking edge (54; 55) is hookable. '. 35 7. Closure according to claim 6, characterized in that » that at each end region in the flat end portion (50; 51) in Acciaierie Weissenfeis SpA
GM 241 / 37-83M •• ti · · «·· Area between the hook-shaped bend (52; 53) and a permanent magnet (58; 59) is attached to the locking edge (54; 55). 8. A closure according to claim 6 or 7, characterized in t that the locking edge (54; 55) is limited, which at its one end by the flat end portion (5O;; 51) and at its other end by a guide nose (57 56) a lateral guide of the hook-shaped bend (53; 52) of the other side part (3; 2) is formed when the same is hooked into place. 9. Closure according to one of claims 1 to 8, characterized characterized in that the bent hook or the hook-shaped Bends (42, 43; 52, 53) on both support bodies (40, 41; 50, 51) are arranged in such a way that they are in a closure-closing movement run against each other with their curvatures facing each other. Acciaierie Weissenfeis SpA
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