Locking mechanism

Abstract

A bolt lock comprises a lock body and a bolt that can be inserted into and locked to the lock body. The lock body includes a cylinder that can be adjusted between an initial position and an operating position using an associated key; a bolt that can be moved between a locked position and an unlocked position; and a locking bar that can be moved between a locked position and a release position. In the locked position, the bolt locks the inserted bolt to the lock body, and in the unlocked position, it releases the inserted bolt for removal from the lock body. By moving the cylinder to the operating position, the bolt can be moved to the unlocked position. The key can only be removed from the cylinder when it is in its initial position.In the locked position, the locking mechanism prevents the cylinder from being moved back to its starting position. In the released position, it releases the cylinder, allowing it to be moved back to its starting position. The pin inserted into the lock body moves the locking mechanism into the released position.

Description

[0001] The invention relates to a clamp lock comprising a lock body and a clamp that can be selectively inserted into the lock body and locked to the lock body. The clamp lock can be designed, in particular, as a bicycle frame lock.

[0002] Such a block lock can be used to selectively secure a first object and a second object to one another. For this purpose, the lock body can be permanently attached to the first object. The block can be assigned to the second object, whereby the block can be connected, for example, to a chain or a wire rope (metal rope, in particular a steel rope) that is connected or connectable to the second object. For example, one (first or second) object can be a stationary anchor (e.g., a building wall, bicycle rack, or lamppost), while the other (second or first) object can be a two-wheeler (e.g., a bicycle or electric bicycle) that is to be selectively secured.

[0003] If the clamp lock is designed as a frame lock of a two-wheeler or for a two-wheeler, the clamp lock can have a (particularly straight) shackle which, in a closed position, is designed to penetrate a spoked wheel of the two-wheeler in order to secure the two-wheeler against unauthorized driving away, wherein a free end of the shackle has the said clamp. In an open position, however, the shackle can be retracted from a space in which the spoked wheel rotates during a ride with the two-wheeler in order to release the two-wheeler for such a ride. Such a frame lock can, for example, be attached to a frame of the two-wheeler or be integrated into a frame of the two-wheeler. In the present context, “two-wheelers” are understood to mean vehicles with at least two wheels, thus also, for example, cargo bikes with three wheels.The two-wheeler can be muscle-powered, motor-powered or motor-assisted, in particular by an electric motor.

[0004] In order for such a bolt lock to reliably fulfil its security function, it is important that the authorised user operates the bolt lock correctly, in particular that it is locked.

[0005] It is an object of the invention to provide a block lock of the type mentioned which supports proper operation by the authorized user.

[0006] This object is achieved by a block lock having the features of claim 1.

[0007] The block lock has a lock body and a block, which can be selectively inserted into the lock body and locked to the lock body in the inserted state. The lock body comprises a locking cylinder, which can be adjusted between an initial position and an actuated position by rotating an associated key around a locking cylinder axis. The locking cylinder can have movable tumblers, which can be sorted using the associated key based on its coding. The locking cylinder can be designed, for example, as a disc cylinder with rotatable disc tumblers, as a plate cylinder with linearly movable plate-shaped tumblers, or as a pin cylinder with pin tumblers.The locking cylinder can, for example, have a cylinder housing and a cylinder core rotatable relative to the cylinder housing with an insertion channel for inserting the associated key.

[0008] The lock body further comprises a bolt movable between a locking position and an unlocking position, and a catch movable between a locking position and a release position. The locking cylinder, the bolt, and the catch can, for example, be held or mounted in a common housing of the lock body.

[0009] In its locked position, the bolt of the lock body locks the inserted block to the lock body. In the unlocked position, the bolt releases the inserted block for removal from the lock body. By moving the locking cylinder to the actuated position using the assigned key, the bolt is moved to the unlocked position and can maintain the unlocked position, especially as long as the locking cylinder remains in the actuated position.

[0010] The key can only be removed from the locking cylinder when it is in its initial position. The initial position of the locking cylinder can also be referred to as the zero position. However, when the locking cylinder is in its operating position, i.e., when the bolt is moved to its unlocked position, the key is secured in the locking cylinder and cannot be removed from the locking cylinder. In particular, it can also be provided that the key is trapped in the locking cylinder in intermediate positions between the initial position and the operating position of the locking cylinder, so that the key can only be removed from the locking cylinder in the initial position.

[0011] Such securing of the inserted key in the locking cylinder can be achieved in particular by the movable locking devices of the locking cylinder.

[0012] For example, the tumblers (in particular disc tumblers or plate tumblers) can have a respective insertion opening for the key, whereby by inserting the key into the locking cylinder and / or turning the inserted key, the tumblers are displaced and thereby form stops against which coding features of the key (e.g. elevation, border of the respective insertion opening) lie directly or indirectly and which thus prevent the key from being pulled out of the locking cylinder until the locking cylinder is returned to the starting position.Alternatively or additionally, it is possible for the tumblers (particularly pin tumblers) to engage in coding recesses (e.g., notches or depressions) of the key and to be unable to withdraw from the coding recesses as long as the locking cylinder is not returned to its original position (e.g., when the core holes and housing holes for the pin tumblers are aligned). Securing the inserted key in the locking cylinder can also be achieved, for example, by a securing element that positively engages the key tip and thus prevents the key from being pulled out of the locking cylinder as long as the key is not in a zero position corresponding to the locking cylinder's original position.

[0013] In its locked position, the lock body's lock prevents the locking cylinder from being adjusted back to its original position. This prevents the key from being removed from the lock cylinder. In its released position, however, the lock releases the locking cylinder for adjustment back to its original position, allowing the locking cylinder to be adjusted back to its original position using the assigned key and the key to be removed from the locking cylinder again. The lock and the clamp are designed so that when the clamp is inserted into the lock body, the clamp moves the lock into the release position and, in particular, holds the lock in the release position as long as the clamp is inserted into the lock body.

[0014] The combination of deadbolt and lock, each of which interacts with the block inserted into the lock body, together with the locking cylinder, forms an automatic key security function. Thus, the authorized user can only remove the key from the locking cylinder when the block is inserted into the lock body, thereby moving the lock into the release position. However, after unlocking and removing the block, the key cannot be removed, as in this state the block prevents the locking cylinder from being moved to its original position. Instead, the user is forced to reinsert the block into the lock body, thereby moving the lock into the release position, after which the locking cylinder can be adjusted to its original position (corresponding to the locking position of the deadbolt).This means that the user cannot easily forget to properly lock the block on the lock body, as otherwise he or she will not be able to remove the key and carry it with him or her.

[0015] Further embodiments of the invention are explained below.

[0016] In some embodiments, the locking cylinder can be adjusted between the initial position and the actuated position without spring assistance, for example, without a torsion spring that would bias the locking cylinder into one position or the other. Rather, it may be provided that the locking cylinder must be actively operated in both directions using the assigned key.

[0017] In some embodiments, the bolt assumes the locking position when the lock cylinder is in its home position. The bolt inserted into the lock body is thus reliably locked when the lock cylinder assumes its home position, allowing the key to be removed. Consequently, it is guaranteed that the bolt is locked to the lock body when the key is removed from the lock cylinder.

[0018] In some embodiments, the bolt can be pre-tensioned toward the locking position. This allows for automatic locking. This means that the block is automatically locked to the lock body upon insertion into the lock body, with the bolt being temporarily pushed back by the block against its pre-tension and then entering into locking engagement with the block. The locking cylinder can then be returned to its original position, and the key can be removed from the locking cylinder. Suitable drive bevels can be formed on the bolt and / or the block to drive the bolt by the block against the pre-tension.

[0019] In some embodiments, the lock assumes the locked position when the bolt is removed from the lock body. This prevents the lock cylinder from being moved to its original position even if the bolt is not inserted into the lock body.

[0020] In some embodiments, the lock can be pre-tensioned toward the locked position. This allows for particularly reliable operation of the blocking lock, as the lock essentially prevents the locking cylinder from being moved back to its initial position unless the lock is actively moved into its release position against its pre-tension. The lock can be driven, in particular, by the blocking member to move into the release position, namely by inserting the blocking member into the lock body. Suitable drive bevels can be formed on the lock and / or the blocking member for this purpose.

[0021] In some embodiments, the bolt and the locking device can be mounted in a floating manner and preloaded by a common preload spring. The preload of the bolt and the locking device can, in particular, occur in opposite directions. In particular, this allows the bolt to be preloaded toward the locking position and the locking device toward the blocking position at the same time, whereby a single preloading device (e.g., a compression spring) is required.

[0022] In some embodiments, the locking cylinder can have a rotatable cam. The cam can be rotated by adjusting the locking cylinder between the initial position and the actuated position. The cam can, for example, be directly coupled to a rotatable cylinder core of the locking cylinder (e.g., formed integrally). The cam can be configured to transmit a drive movement generated by the associated key to the bolt. The cam can move along a circular path around the locking cylinder axis.

[0023] In some embodiments, the cam of the locking cylinder may have a drive section which, when the locking cylinder is moved into the actuating position, drives the bolt towards its unlocking position.

[0024] Alternatively or additionally, the cam may have a stop portion that strikes the lock when the lock is in the locked position and the locking cylinder is moved from the actuated position towards the initial position.

[0025] In some embodiments, the lock can have a locking portion and a release portion. In the locking position of the lock, the locking portion locks the cam of the locking cylinder against the adjustment movement of the locking cylinder to the initial position. In the release position of the lock, the release portion releases the cam of the locking cylinder for the adjustment movement of the locking cylinder to the initial position. The release portion of the lock can be set back—with respect to the direction of movement of the cam—in particular relative to the locking portion.

[0026] In some embodiments, the block can be inserted into the lock body along a block insertion direction (in particular in a straight line), wherein the key can be inserted into the lock cylinder along the lock cylinder axis, and wherein the lock cylinder axis is aligned perpendicular to the block insertion direction. Thus, the lock cylinder can be actuated by the user using the associated key outside the path of movement of the block. This enables uninterrupted actuation of the lock cylinder. Furthermore, a simple and efficient drive of the bolt and / or the locking device is possible by rotating the lock cylinder, in particular via the aforementioned cam of the lock cylinder.

[0027] In some embodiments, the bolt and the lock can be mounted so that they can move in a straight line.

[0028] In some embodiments, the bolt can have a flat bearing section that extends along a plane perpendicular to the locking cylinder axis and is movable perpendicular to the locking cylinder axis, wherein the lock also has a flat bearing section that extends along a plane perpendicular to the locking cylinder axis and is movable perpendicular to the locking cylinder axis and parallel to the bolt. The bearing section of the bolt and the bearing section of the lock can in particular abut one another to form a mutual rectilinear guide. This enables particularly simple and small-volume mounting of the bolt in the lock. In particular, the bolt and the lock can be mounted on an underside of the lock body and / or the locking cylinder, resulting in a particularly flat design of the lock body.

[0029] In some embodiments, the latch and the lock may be formed as stamped and folded metal sheets.

[0030] In some embodiments, the latch may have a locking portion that protrudes transversely, in particular vertically, from the bearing portion of the latch. The locking portion of the latch may be configured to engage an engagement recess of the block (in particular the aforementioned engagement recess) when the latch is in the locked position.

[0031] In some embodiments, the lock can have a drive section that protrudes transversely, in particular vertically, from the bearing section of the lock. A drive bevel (in particular the aforementioned drive bevel) can be formed on the drive section of the lock, via which the block, upon its insertion into the lock body, can drive the lock to move into the release position.

[0032] In some embodiments, the block can have an engagement recess into which the bolt engages in the locked position. The engagement recess can in particular be designed as a circumferentially extending groove. The block can have a substantially cylindrical insertion section that is inserted into the lock body. In some embodiments, the block can have an insertion bevel and / or drive bevel at its free end, in particular in the form of a conical or frustoconical tip. The drive bevel of the block can interact with the bolt and / or with the locking device in order to push back the bolt or the locking device upon insertion of the block into the lock body.

[0033] The invention also relates to a frame lock of a two-wheeler or for a two-wheeler, wherein the frame lock has a clamp lock of the aforementioned type and a (particularly rectilinear) shackle which, in a closed position, is designed to penetrate a spoked wheel of the two-wheeler, wherein a free end of the shackle has said clamp. For this purpose, the lock body can be fastened to a frame section of the two-wheeler or integrated into a frame section of the two-wheeler (wherein the frame section can form a housing of the lock body). The shackle can be inserted along a rectilinear insertion direction into an insertion opening of the lock body, which opening points in the direction of the spoked wheel. In this closed position, the end of the shackle (clamp) can be locked to the lock body.This prevents the spoked wheel from rotating, and the associated key can be removed from the locking cylinder, as explained above. If the shackle is subsequently unlocked by actuating the locking cylinder, the shackle can be removed from the lock body and from the path of movement of the spoked wheel. In this open position, the bicycle is released for travel, with the key secured to the lock body. In the open position, the shackle can be permanently connected to the lock body or completely separated from the lock body.

[0034] The invention is explained below merely by way of example with reference to the drawings. Fig. 1 shows a block lock in a perspective view. Fig. 2 shows the cock lock in an exploded view from above. Fig. 3 shows the cock lock in an exploded view from below. Fig. 4A to 4C show the cock lock with the cock not or not fully inserted, namely (A) in a bottom view, (B) in a partially cut-away perspective view from above and (C) in a perspective view from above. Fig. 5A to 5C show the cock lock with the cock inserted and locked in the three views according to Fig. 4. Fig. 6A to 6C show the cock lock with the cock inserted and unlocked in the three views according to Fig. 4. Fig. 7A to 7C show the cock lock with the cock unlocked and removed in the three views according to Fig. 4.

[0035] The figures show a possible embodiment of a block lock, which has a lock body 11 and a block 21, which can be inserted into the lock body 11 along a block insertion direction E and can be locked to the lock body 11 ( Fig. 1). The lock body 11 comprises a housing 13 with an insertion opening 15 for the bolt 21.

[0036] Within the housing 13, the lock body 11 comprises a locking cylinder 31 (not shown separately), which can be moved by means of an associated key 33 by rotating about a locking cylinder axis A between an initial position ( Fig. 1) and an operating position ( Fig. 6C) is adjustable; a latch 41 ( Fig. 2 and Fig. 3), which can be switched between a locking position ( Fig. 5A) and an unlocking position ( Fig. 6a) is movable; and a lock 51 ( Fig. 2 and Fig. 3), which can be switched between a locking position ( Fig. 4A) and a release position ( Fig. 5A) is movable.

[0037] The key 33 can be inserted into the locking cylinder 31 along the locking cylinder axis A, wherein the locking cylinder axis A is aligned perpendicular to the block insertion direction E. The locking cylinder 31 is designed to release the inserted key 33 for removal only when the locking cylinder 31 and thus the key 33 are in the starting position ( Fig. 1, Fig. 5C).

[0038] The bolt 41 and the lock 51 are mounted for linear movement. The bolt 41 and the lock 51 are floating and are preloaded in opposite directions by a common preload spring 43 ( Fig. 3). The preload spring 43 is clamped between the bolt 41 and the lock 51.

[0039] The bolt 41 has a flat bearing portion 45 that extends along a plane perpendicular to the locking cylinder axis A and is movable perpendicular to the locking cylinder axis A. The bearing portion 45 includes a control opening 47. The lock 51 also has a flat bearing portion 57 that extends coplanar with the bearing portion 45 of the bolt 41 along a plane perpendicular to the locking cylinder axis A and is movable perpendicular to the locking cylinder axis A and parallel to the bolt 41, wherein the bearing portion 45 of the bolt 41 and the bearing portion 57 of the lock 51 abut one another and thus form a rectilinear mutual guide. The bolt 41 further has a locking portion 49 that projects perpendicularly from the bearing portion 45 of the bolt 41 and is designed to engage in a circumferential engagement recess 23 of the block 21 in the locking position.The lock 51 has a drive section 59 that protrudes perpendicularly from the bearing section 57 of the lock 51. A drive bevel 61 is formed on the drive section 59 of the lock 51, via which the block 21 can push back the preloaded lock 51 upon its insertion into the lock body 11. Furthermore, the lock 51 has an elongated semi-cylindrical recess 63 between the bearing section 57 and the drive section 59, in which the preload spring 43 is received.

[0040] The locking cylinder 31 has a cam 35, which can be driven by a key 33 inserted into the locking cylinder 31 to rotate about the locking cylinder axis A. For this purpose, the cam 35 is connected in a rotationally fixed manner to the underside of a rotatable cylinder core (not shown) of the locking cylinder 31. The cam 35 is essentially circular segment-shaped and engages in the control opening 47 of the bearing section 45 of the bolt 41. The cam 35 has a drive section 37 and a stop section 39. Depending on the position of the lock 51, the stop section 39 of the cam 35 interacts with a locking section 53 or a release section 55 of the lock 51, as will be explained below.

[0041] The following is based on the Fig. 4 to 7 the functionality of the shown block lock is explained, whereby in the Fig. 4 to 7, the three illustrations show the cock lock (A) in a bottom view, (B) in a partially cutaway perspective view from above and (C) in a perspective view from above.

[0042] According to Fig. 4, the block 21 is not or not completely inserted into the lock body 11. The key 33 is inserted into the lock cylinder 31 ( Fig. 4C). The locking cylinder 31 is in an intermediate position, which lies between the initial position and the actuating position. The bolt 41 and the catch 51, due to their respective pre-tension, protrude into the path of movement of the block 21 within the housing 13. As can be seen from the Fig. 4A and Fig. 4B, the stop section 39 of the cam 35 rests against the locking section 53 of the lock 51. For this purpose, the lock 51 is in the locking position, in which the lock 51 locks the locking cylinder 31 against any adjustment movement into the initial position. This prevents the cam 35 - and thus the key 33 - from returning to the initial position ( Fig. 1) can be rotated. This rotational movement towards the starting position would Fig. 4A clockwise and in Fig. 4C counterclockwise.

[0043] According to Fig. 5, the block 21 is fully inserted into the lock body 11 and locked in the lock body 11. For this purpose, the bolt 41, after the bolt 41 has been temporarily pushed back by the tip of the block 21 against the force of the preload spring 43, is in the locked position due to its preload, in which position the bolt 41 engages with its locking section 49 into the engagement recess 23 of the block 21. The lock 51 has been pushed back via its drive bevel 61 by the block 21 inserted into the lock body 11 against the force of the preload spring 43 into the release position, in which the lock 51 releases the locking cylinder 31 for an adjustment movement to the starting position. For this purpose, the release section 55 of the lock 51 is located at the level of the cam 35 of the locking cylinder 31.Thus, by turning the key 33 into the starting position, the stop section 39 of the cam 35 can now be turned into the release section 55 of the lock 51 (. Fig. 5A). In the initial position of the locking cylinder 31 thus reached, the key 33 can be removed from the locking cylinder 31 ( Fig. 5C). The clamp 21 is now locked to the lock body 11.

[0044] According to Fig. 6, the locking cylinder 31 is now in the actuating position. For this purpose, the key 33 was Fig. 5 rotated by approximately 90 degrees, relative to the bottom view according to Fig. 6A counterclockwise and with respect to the plan view according to Fig. 6C clockwise. This rotation of the key 33 causes a corresponding rotation of the cam 35, so that the drive section 37 of the cam 35 moves the bolt 41 towards its unlocking position ( Fig. 6A). In the unlocked position, the bolt 41 releases the block 21 for removal from the lock body 11.

[0045] According to Fig. 7, the bolt is removed from the lock body 11. The key 33 is still in the operating position. However, the lock 51 returns to the locked position due to its pre-tension ( Fig. 7A). The key 33 can now be turned back towards the starting position from the actuating position. However, the locking cylinder 31 cannot be fully moved to the starting position because the stop section 39 of the cam 35 ultimately strikes the locking section 53 of the lock 51, as described in connection with Fig. 4. The key 33 is thus trapped in the lock body 11.

[0046] As a result, the illustrated block lock has an automatic key locking function. The user can only remove the key 33 from the locking cylinder 31 and carry it with them if the block 21 is locked in the lock body 11.

[0047] With regard to the clamp lock shown in the figures, it should be noted that this can also be part of a frame lock of a two-wheeler or for a two-wheeler, wherein the frame lock has a straight or curved shackle, the end of which forms the clamp 21. List of reference symbols 11 Lock body 13 housings 15 Insertion opening 21 clamps 23 Intervention deepening 31 locking cylinders 33 keys 35 cams 37 Drive section 39 Stop section 41 bars 43 Preload spring 45 storage section 47 Control opening 49 Locking section 51 Lock 53 restricted section 55 Release section 57 storage section 59 Drive section 61 drive bevel 63 Deepening A Lock cylinder axis E Clamp insertion direction

Claims

[1] Clamp lock, especially bicycle frame lock, with a lock body (11) and a block (21) which can be selectively inserted into the lock body (11) and locked to the lock body (11); wherein the lock body (11) comprises: a locking cylinder (31) which can be adjusted between an initial position and an actuating position by means of an associated key (33) by rotating about a locking cylinder axis (A); a latch (41) movable between a locking position and an unlocking position; and a lock (51) movable between a locking position and a release position; wherein the bolt (41) locks the inserted block (21) to the lock body (11) in the locking position and releases the inserted block (21) for removal from the lock body (11) in the unlocking position; wherein by adjusting the locking cylinder (31) into the actuating position, the bolt (41) can be moved into the unlocking position; wherein the key (33) can only be removed from the locking cylinder (31) in the initial position of the locking cylinder (31); wherein the lock (51) in the locking position locks the locking cylinder (31) against an adjustment movement into the starting position and in the release position releases the locking cylinder (31) for an adjustment movement into the starting position; and wherein the block (21) inserted into the lock body (11) moves the lock (51) into the release position. [2] A bolt lock according to claim 1, wherein the bolt (41) assumes the locking position when the locking cylinder (31) is in the initial position. [3] A bolt lock according to claim 1 or 2, wherein the bolt (41) is biased towards the locking position. [4] A blocking lock according to any one of the preceding claims, wherein the lock (51) assumes the blocking position when the blocking lever (21) is removed from the lock body (11). [5] A bolt lock according to any one of the preceding claims, wherein the lock (51) is biased in the direction of the locking position. [6] A bolt lock according to any one of the preceding claims, wherein the bolt (41) and the catch (51) are floating and are pre-tensioned by a common pre-tensioning spring (43). [7] A bolt lock according to any one of the preceding claims, wherein the locking cylinder (31) has a rotatable cam (35). [8] A bolt lock according to claim 7, wherein the cam (35) has a drive section (37) which drives the bolt (41) in the direction of the unlocking position when the locking cylinder (31) is moved into the actuating position. [9] A bolt lock according to claim 7 or 8, wherein the cam (35) has a stop portion (39) which abuts the lock (51) when the lock (51) is in the locking position and the lock cylinder (31) is moved from the actuating position towards the starting position. [10] Bolt lock according to one of claims 7 to 9, wherein the lock (51) has a locking section (53) and a release section (55), wherein in the locking position of the lock (51) the locking section (53) locks the cam (35) of the locking cylinder (31) against the adjustment movement of the locking cylinder (31) into the starting position and wherein in the release position of the lock (51) the release section (55) releases the cam (35) of the locking cylinder (31) for the adjustment movement of the locking cylinder (31) into the starting position. [11] A block lock according to any one of the preceding claims, wherein the block (21) is insertable into the lock body (11) along a block insertion direction (E), wherein the key (33) is insertable into the lock cylinder (31) along the lock cylinder axis (A), and wherein the lock cylinder axis (A) is oriented perpendicular to the block insertion direction (E). [12] A bolt lock according to any one of the preceding claims, wherein the bolt (41) and the locking device (51) are mounted to be movable in a straight line. [13] A bolt lock according to any one of the preceding claims, wherein the bolt (41) has a flat bearing portion (45) extending along a plane perpendicular to the lock cylinder axis (A) and movable perpendicular to the lock cylinder axis (A), wherein the lock (51) has a flat bearing portion (57) extending along a plane perpendicular to the lock cylinder axis (A) and movable perpendicular to the lock cylinder axis (A) and parallel to the bolt (41). [14] A bolt lock according to claim 13, wherein the bearing portion (45) of the bolt (41) and the bearing portion (57) of the lock (51) are arranged coplanar and abut one another. [15] Frame lock of a two-wheeler or for a two-wheeler, wherein the frame lock comprises a clamp lock according to one of the preceding claims and a shackle which is designed to penetrate a spoked wheel of the two-wheeler in a closed position, wherein one end of the shackle comprises said clamp (21).

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