Shackle lock with welded armoring

Abstract

A shackle lock comprises a lock body, which comprises a housing and a locking device that is accommodated in the housing, and a locking shackle, which has at least one end that can be selectively locked to the lock body or released from the lock body by means of the locking device, wherein an armoring is applied onto the locking shackle and / or the housing of the lock body by means of cladding.

Description

[0001] Padlock with welded-on armor

[0002] The invention relates to a U-lock comprising a lock body and a striker. The lock body comprises a housing and a locking device accommodated in the housing. The striker has at least one end, which can be selectively locked to the lock body or detachable from the lock body by means of the locking device.

[0003] The locking shackle of such a padlock can, for example, have a U-shape, as is generally known from DE 299 03 865 U1, US 5 417 092 A, US 5 488 845 A, WO 94 / 10414 A1, DE 10 2018 116 434 A1 or EU design EM 002113266-0002.

[0004] Alternatively, the locking bracket can also have a rectilinear shape, as is known, for example, for padlocks in general from WO 2006 / 109299 A2 or EP 2 333 204 A1 , or for brake disc locks in general from DE 10 2005 043 926 A1 , or for frame locks in general from DE 103 58 300 A1 or DE 10 2004 052 463 A1 , or for scaffold locks in general from WO 2015 / 185380 A1.

[0005] Furthermore, the locking bracket can also be designed in several parts, in particular with several links connected to one another in an articulated manner, for example as an articulated bar lock, as is generally known from EP 0 638 473 B1, EP 0 675 995 B1 or EP 0 689 987 B1.

[0006] For example, U-locks are used to secure an object, such as a bicycle, to a bicycle rack, fence, or lamppost. When the locking shackle is unlocked, the locking shackle can be moved into an open position, in which the locking shackle is detached from the lock body at one end or completely to form an open loop. Starting from the open position, the locking shackle can, for example, be guided around a frame section of the bicycle and a bicycle rack, fence, lamppost, or the like, or the locking shackle can simply be guided through a movable part (e.g., rim, brake disc) of the bicycle. The locking shackle can then be locked to the lock body in a closed position to close the loop and thus secure the bicycle against unauthorized removal or driving away.

[0007] It is an object of the present invention to provide a U-lock which has increased break-in security.

[0008] The object is achieved by a U-lock according to claim 1 and in particular by the fact that an armouring is applied to the locking bracket and / or the housing of the U-lock by means of build-up welding.

[0009] The U-lock according to the invention comprises a lock body and a striker. The lock body can have, in particular on an outer side, at least one insertion opening that opens into an insertion channel for the striker. The lock body further comprises a locking device. The striker can be selectively moved into an open position or a closed position relative to the lock body. The striker can have at least one shackle end that, in the closed position of the striker, projects through the respective insertion opening into the associated insertion channel of the lock body. In the closed position, the striker can be locked to the lock body by the locking device. In other words, the U-lock comprises a striker, one or more ends of which can selectively engage a lock body.In this closed position of the locking bracket, the locking bracket can be locked by means of a locking device arranged in the lock body and thus secured against unauthorized opening or complete detachment from the lock body.

[0010] Thus, the striker and the lock body can form a closed loop, for example. By authorized actuation of the locking device, for example, using a physical key or a code, the striker can be unlocked and subsequently opened or detached from the lock body.

[0011] Alternatively, the striker can be substantially linear. In some embodiments, a locking structure can be provided at one end of such a linear striker, and, for example, a thickened portion can be provided at the other end, which limits the movement of the striker.

[0012] A curved shape of the locking shackle is also possible, for example, a C-shape of a rotating locking shackle on a padlock or a bicycle frame lock. In some embodiments, one end of the locking shackle can be permanently attached to the lock body, in particular, in a rotatable or pivotable manner.

[0013] In some embodiments, the locking device of the lock body may comprise at least one movable bolt, wherein the striker can be locked to the lock body in the closed position by moving the respective bolt into a locking position in which the bolt enters into a locking engagement with the respective locking structure of the tube.

[0014] The locking device can be purely mechanical, for example, with a key-operated locking cylinder. In some embodiments, the locking device can be electromechanical, for example, with an electronic locking cylinder, electric motor, or an electromagnet that drives the bolt(s).

[0015] In some embodiments, the lock body of the U-lock may have an elongated shape, for example, with a circular, oval, or rectangular cross-section. The longitudinal shape may, in particular, be oriented perpendicular to the longitudinal axis of a U-shaped shackle.

[0016] It has been found that if a welded armor plating is formed on the striker and / or on the housing of the lock body of a U-lock according to the invention, a complete severance of the striker or the housing by machining with a geometrically defined or undefined cutting edge or by pinching is made impossible or at least significantly more difficult. Consequently, the U-lock according to the invention is considerably better protected against any type of portable breaking tool.

[0017] For increased protection against cutting attempts, the armor preferably includes a hard metal.

[0018] In addition, the armor plating can be designed in the form of at least one armor bead, which in particular has a thickness between 0.5 and 5 mm, preferably a thickness between 1 mm and 2 mm, and / or a width between 5 mm and 10 mm. According to one embodiment, the armor bead can extend over at least approximately the entire length of the housing and / or over at least approximately the entire length of the striker.

[0019] Furthermore, the armor bead can be a continuous armor bead or be formed by several spaced-apart segments.

[0020] Furthermore, the armor plating can be formed on a side surface, in particular an outer side surface, or an edge, in particular an outer edge, of the housing. Accordingly, the armor plating can be formed on a side surface, in particular an outer side surface, or an edge, in particular an outer edge, of the locking bracket.

[0021] For example, the armor plating can be formed centrally on at least one side surface of the housing, offset from the center of at least one side surface of the housing, in the region of at least one edge of the housing, partially or completely on at least one edge of the housing, and / or in a recess provided on a side surface of the housing. Furthermore, at least two, in particular opposite, side surfaces of the housing and / or at least two, in particular opposite, side surfaces of the locking bracket can be provided with armor plating.

[0022] If the locking bar is formed by several hingedly connected joint bars, the armor plating can be formed on at least one of the joint bars of a joint bar bracket. For example, the armor plating can be formed on at least one narrow side of the joint bar and / or in a recess provided on at least one side surface of the joint bar.

[0023] The respective recess on a side surface of the housing or the hinged rod can be bordered by a circumferential (i.e., closed circumferential) edge of the housing or the hinged rod, which forms a raised portion above the bottom of the recess and surrounds the armor plating. This provides additional protection.

[0024] The invention is described below by way of example using advantageous embodiments with reference to the accompanying drawings. They show:

[0025] Fig. 1 A is a schematic plan view of a first embodiment of a U-lock, wherein the U-lock is a U-shackle lock;

[0026] Fig. 1 B is a perspective view of an end region of a first variant of a locking bracket of the U-lock of Fig. 1 A, wherein an armouring is formed on two opposite side surfaces of the locking bracket;

[0027] Fig. 1 C is a perspective view of an end portion of a second variant of a locking bracket of the U-lock of Fig. 1 A, wherein an armor plating is formed on three side surfaces of the locking bracket;

[0028] Fig. 2A is a cross-sectional view of a first variant of a housing of a U-lock of Fig. 1A or Fig. 3A, wherein an armouring is formed centrally on two opposite side surfaces of the housing;

[0029] Fig. 2B is a cross-sectional view of a second variant of a housing of a U-lock from Fig. 1A or Fig. 3A, wherein two armorings are formed on two opposite side surfaces of the housing; Fig. 2C is a cross-sectional view of a third variant of a housing of a U-lock from Fig. 1A or Fig. 3A, wherein one armoring is formed on two opposite side surfaces of the housing and one armoring is formed partially in the region of two adjacent edges of the housing;

[0030] Fig. 2D is a perspective view of the housing of Fig. 2C;

[0031] Fig. 2E is a perspective view of the housing of Fig. 2C, wherein a

[0032] Armour is formed in a recess provided on a side surface of the casing;

[0033] Fig. 2F is a perspective view of the housing of Fig. 2C, wherein an armor plating in the form of a circumferential armor bead is formed on a side surface of the housing;

[0034] Fig. 3A is a schematic plan view of a second embodiment of a U-lock, wherein the U-lock is a folding lock;

[0035] Fig. 3B is a perspective view of a hinge bar of the U-lock of Fig. 3A, wherein an armouring is formed on a narrow side of the hinge bar; and

[0036] Fig. 3C is a perspective view of a hinge bar of the U-lock of Fig. 3A, wherein an armour plating is formed in a recess provided on a side surface of the hinge bar.

[0037] Fig. 1A shows a plan view of a first embodiment of a U-lock 10 according to the invention, which comprises a lock body 12 and a locking shackle 18. The lock body 12 comprises a housing 14 and a locking device 16 arranged in the housing 14, which serves to secure the locking shackle 18 to the lock body 12. The housing 14 is made of metal and can additionally be surrounded by a plastic sheath (not shown). In the embodiment shown here, the locking shackle 18 is U-shaped and has a first end 20a and a second end 20b, which can be inserted into or removed from respective locking openings 28 of the lock body 12.

[0038] To ensure effective protection against unauthorized cutting attempts, the locking bar 18 and the housing 14 of the lock body 12 have additional armor in the form of one or more armor beads 22. The armor is applied by means of build-up welding, wherein the width 30 of an armor bead 22 is in a range between 5 mm and 10 mm, and the thickness 32 of an armor bead 22 is in a range between 0.5 mm and 5 mm, in particular between 1 mm and 2 mm (Fig. 2A).

[0039] The armor plating may be formed on one or more side surfaces of the striker 18. For example, an armor plating bead 22 is formed on two opposite side surfaces of the striker 18 (Fig. 1 B), or an armor plating bead 22 is formed on three different side surfaces of the striker 18 (Fig. 1 C).

[0040] In particular, the armor plating is formed on at least one of the outer side surfaces 34 of the striker 18. An outer side surface 34 of the striker 18 refers to a side surface that is not located inside the curvature of the striker 18 (Fig. 1A). Since, in an attempt to sever the striker 18, one of the outer side surfaces 34 is attacked or eroded first, this arrangement of the armor plating increases the robustness of the striker 18 against unauthorized severing attempts. Furthermore, the armor plating can be formed on one or more side surfaces of the housing 14 of the lock body 12 and / or on one or more edges of the housing 14 of the lock body 12. If an armor bead 22 is formed on an edge of the housing 14, the armor bead 22 can be formed either entirely on the edge or partially on the edge and partially on an adjacent side surface of the housing 14.

[0041] For example, one armor bead 22 is formed centrally on each of two opposite side surfaces of the housing 14 (Fig. 2A). Alternatively, two spaced-apart armor beads 22 are formed on each of two opposite side surfaces of the housing 14, wherein the armor beads 22 are equally spaced with respect to the respective centers of the side surfaces of the housing 14 (Fig. 2B).

[0042] According to a further variant shown in Figs. 2C and 2D, one armor bead 22 is formed on each of the opposite side surfaces of the housing 14, and one armor bead 22 is formed on each of the two adjacent edges of the housing 14. The armor beads 22 on the opposite side surfaces of the housing 14 are offset relative to the respective centers of the side surfaces.

[0043] In particular, the armor plating is formed on at least one of the outer side surfaces 36 and / or partially or entirely on at least one of the outer edges 38 of the housing 14. An outer side surface 36 of the housing 14 here refers to a side surface that borders the end face of the housing 14 that has the locking openings 28. Accordingly, an outer edge 38 of the housing 14 refers to an edge that does not border the end face of the housing 14. Since an attempt to cut through the housing 14 first impacts one of the outer side surfaces 36 and / or one of the outer edges 38, this arrangement of the armor plating contributes to a further increase in the resistance of the housing 14 of the lock body 12 against unauthorized break-in attempts.

[0044] According to a further variant shown in Fig. 2E, an armor bead 22 is formed in a recess 44 on each of the opposite side surfaces of the housing 14. In particular, the recesses are formed on the outer side surfaces 36 of the housing 14. Alternatively, the armor bead 22 can also be formed in only one of the recesses 44. Furthermore, such a housing 14 can additionally have an armor bead 22 extending over at least approximately the entire length of an outer edge 38 of the housing 14, as shown in Fig. 2D. It is understood that such an armor bead 22 formed in a recess can also be provided on only one of the side surfaces or on all side surfaces of the housing 14.

[0045] According to a further variant shown in Fig. 2F, armor in the form of a circumferential armor bead 22 is formed on opposite side surfaces of the housing 14. In particular, the armor beads 22 can each form a self-contained, essentially rectangular shape. The side surfaces are preferably the outer side surfaces 36 of the housing 14. As can be seen in Fig. 2F, the armor beads 22 extend partially on the edges of the housing 14. However, an embodiment is also conceivable in which the armor beads 22 are arranged exclusively on the side surfaces, i.e. at a distance from the housing edges. It is understood that such a circumferential armor bead 22 can also be provided on just one of the side surfaces or on all side surfaces of the housing 14.

[0046] Fig. 3A shows a plan view of a second embodiment of a U-lock 10 according to the invention, which differs from the first embodiment shown in Fig. 1 A essentially in that the locking bracket 18 is a hinged bar bracket which has a plurality of hinged bars 24 which are hingedly connected to one another via rivets 26.

[0047] At least one of the hinge rods 24 of the striker 18 has armor plating. In particular, an armor bead 22 extends over at least approximately the entire length of a narrow side 40 of the hinge rod 24, so that essentially the entire hinge rod 24 is armored (Fig. 3B).

[0048] Preferably, all joint rods 24 have an armor bead 22, so that the striker 18 is fully armored. For even greater resistance of the striker 18, both narrow sides 40 of a joint rod 24 are provided with an armor bead 22.

[0049] According to a further variant shown in Fig. 3C, an armor bead 22 is formed in a recess 42 on at least one side surface (here: broad side 41), in particular on opposite side surfaces (in particular broad sides 41) of the hinge rod 24. The respective recess 42 and armor bead 22 extend in the longitudinal direction of the hinge rod 24, in particular in a straight line, until just before the openings 27 for the respective articulated connection of the locking bracket 18 (cf. rivets 26 according to Fig. 3A). The recess 42 is delimited on the respective side surface of the hinge rod 24 by a circumferential edge 43. The armor bead 22 is thus surrounded by the circumferential edge 43 and is thereby additionally protected on all sides.

[0050] Furthermore, such a locking bracket 18 can additionally have an armour bead 22 extending over at least approximately the entire length of a narrow side 40 of the joint rod 24, as shown in Fig. 3B.

[0051] The armor preferably comprises a hard metal suitable for application by deposition welding. This makes the armor even more difficult to erode, which in turn further increases the protective effect of the armor.

[0052] Furthermore, the armor plating can extend over the entire length of the striker 18 and over the entire length of the housing 14. This prevents a cutting tool from being applied to a surface portion of the striker 18 or the lock body 12 on which no armor bead 22 is formed. This arrangement of the armor plating makes the U-lock 10 according to the invention even more secure against unauthorized break-in attempts.

[0053] It is understood that, in principle, only the striker 18 or only the housing 14 of the lock body 12 of the U-lock 10 according to the invention can be armored in order to reduce manufacturing costs. If multiple armor beads 22 are formed on the striker 18 and / or the housing 14, the armor beads 22 can also differ in their thickness 32 and / or width 30.

[0054] Furthermore, the armor plating can be formed on the outside of the housing 14 and / or inside the housing 14 of the lock body 12. If the armor plating is formed on the outside of the housing 14, this has a deterrent effect, as the U-lock 10 appears more robust and therefore more difficult to break into. This, in turn, reduces the likelihood of unauthorized break-in attempts. The same applies if the armor plating is visibly formed on the striker 18. If the armor plating is formed inside the housing 14, so that the armor plating is not visible from the outside, this improves the visual appearance of the U-lock 10.

[0055] 10 U-lock

[0056] 12 lock bodies

[0057] 14 housings

[0058] 16 Locking device

[0059] 18 locking brackets

[0060] 20a first end of the locking bracket

[0061] 20b second end of the locking bracket

[0062] 22 Armor bulge

[0063] 24 joint rod

[0064] 26 rivets

[0065] 27 Opening for joint connection

[0066] 28 Locking opening

[0067] 30 Width of the armor bulge

[0068] 32 Height of the armor bulge

[0069] 34 Outer surface of the striker

[0070] 36 Outer surface of the housing

[0071] 38 Outer edge of the housing

[0072] 40 narrow side

[0073] 41 Broadside

[0074] 42 Recess of the joint rod

[0075] 43 surrounding edge

[0076] 44 recess of the housing

Claims

Claims: A padlock (10) comprising: a lock body (12) comprising a housing (14) and a locking device (16) housed in the housing (14); and a locking bar (18) having at least one end (20a, 20b) which can be selectively locked to or released from the lock body (12) by means of the locking device (16), characterized in that armor plating is applied to the locking bar (18) and / or the housing (14) of the lock body (12) by means of weld overlay. A padlock (10) according to claim 1, characterized in that the armor plating comprises a hard metal. A padlock (10) according to claim 1 or 2, characterized in that the armor plating is formed in the form of at least one armor bead (22) which in particular has a thickness (32) between 0.5 and 5 mm.U-lock (10) according to claim 3, characterized in that the armor bead (22) has a width (30) between 5 mm and 10 mm. A padlock (10) according to claim 3 or 4, characterized in that the armor bead (22) extends over at least approximately the entire length of the housing (14) and / or over at least approximately the entire length of the shackle (18). A padlock (10) according to any one of claims 3 to 5, characterized in that the armor bead (22) is a continuous armor bead (22) or is formed by several spaced-apart segments. A padlock (10) according to any one of the preceding claims, characterized in that the armor is formed on a side surface, in particular an outer surface (36), and / or an edge, in particular an outer edge (38), of the housing (14) and / or that the armor is formed on a side surface, in particular an outer surface (34), and / or an edge, in particular an outer edge, of the shackle (18).A padlock (10) according to one of the preceding claims, characterized in that the armor plating is formed centrally on at least one side surface of the housing (14), offset from its center on at least one side surface of the housing (14), in the region of at least one edge of the housing (14), and / or partially or completely on at least one edge of the housing (14). A padlock (10) according to one of the preceding claims, characterized in that. that at least two, in particular opposite, side surfaces of the housing (14) and / or at least two, in particular opposite, side surfaces of the locking bar (18) are provided with armor plating.

0. Padlock (10) according to one of the preceding claims, characterized in that the armor plating is formed in a recess (44) provided on a side surface of the housing (14).

1. Padlock (10) according to one of the preceding claims, characterized in that the locking bar (18) is formed by several pivotally connected joint rods (24) and the armor plating is formed on at least one of the joint rods (24).

2. Padlock (10) according to claim 1, characterized in that the armor plating is formed on a narrow side (40) of the joint rod (24). 3.U-lock (10) according to claim 1 1 or 12, characterized in that the armor is formed in a recess (42) provided on a side surface of the joint rod (24).

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