Emergency release unit for a parcel box lock

Abstract

Emergency release unit for a parcel box lock, wherein the parcel box locking mechanism is designed with a rotary push-button lock which has an inner lock body that is rotatable and axially displaceable in an open state, which carries a lock shaft and which can be locked in a closed state in a rotationally fixed position by means of a locking bolt which springs eccentrically into a locking bolt receptacle in an outer lock body, comprising a carrier bushing (10), a plunger (20), a rotary slide (30), a locking drive wheel (40) and a rotary slide actuation (50), wherein the carrier bushing (10) is designed for a rotationally fixed arrangement on the outer body of the lock and has a plunger receptacle (11) which is arranged corresponding to the locking bolt receptacle, wherein the plunger (20) is arranged to be radially displaceable in the plunger receptacle (11) and has a plunger head (21) and a plunger foot (22) which is designed for pressure contact with the locking bolt and wherein the plunger (20) is designed to be moved from a rest position into an actuating position by means of a radially concentric movement and in the actuating position to press in the locking bolt and unlock it, wherein the rotary slide (30) is rotatably arranged about the carrier bushing (10) and has a hollow cylindrical main section (31), an internal eccentric slide track (32) which is designed for an angle-dependent actuation of the plunger (20) by means of pressure contact with the plunger head (21) and a driver section (33) which is designed for a rotary motion transmission to the locking drive wheel (40) and to which a return spring (34) is assigned which acts in a locking rotation direction, wherein the locking drive wheel (40) is designed for a rotationally fixed arrangement on the lock shaft and for an angle-position-dependent actuation of a locking means (70) and has a freewheel contour (41) into which the driver section (33) engages, wherein the freewheel contour (41) is designed to provide a freewheel rotational movement of the rotary carriage (30) relative to the locking drive wheel (40) at a freewheel angle and to transmit a rotational movement of the rotary carriage (30) to the locking drive wheel (40) when the freewheel angle is exceeded in an opening rotation direction, wherein the rotary carriage actuation (50) is designed for manual rotation of the rotary carriage (30) in the opening direction of rotation wherein the emergency release device is designed for a passive state and for opening actuation, wherein in the passive state the rotary slide is in a starting angular position and the plunger (20) is in the rest position, wherein, in the opening operation by means of manual actuation, in an unlocking phase, the rotary slide (30) is rotated from the initial angular position to an unlocking angular position in the opening direction by a first rotational angle, and the plunger (20) is brought radially concentrically from its rest position to its actuating position by means of the internal eccentric slide (32), and the locking bolt is pressed in and unlocked, wherein the rotational movement takes place within the free-running angle and no rotational movement is transmitted to the locking drive wheel (40),In the unlocking phase, the rotary slide (30) is further rotated in the opening direction from the unlocking angle position to an unlocking position by a second rotation angle, and by exceeding the freewheel angle, the rotational movement is transferred to the locking drive wheel (40) via the driver section (33) and the freewheel contour (41), and in the unlocking position the locking means (70) is unlocked.

Description

[0001] The invention relates to an emergency release unit for internal actuation of a parcel box locking mechanism with a rotary push-button lock.

[0002] Parcel boxes are known in the prior art. They are becoming increasingly common and serve as secure drop-off points where delivery services can leave parcels, packages, or similar items. Such a parcel box has a locking mechanism that can be closed by the delivery service after the item has been deposited, without the need for a key. According to the prior art, it is known to operate the locking mechanism using a rotary push-button lock. While the rotary push-button lock can be moved into a locking position without a key and locked in this position by pressing it, unlocking the rotary push-button lock, and thus opening the parcel box door, is only possible with a key.

[0003] Depending on the size of the parcel box, it is possible for children in particular to get inside and become locked in. Since opening from the inside is not possible, the resulting danger can only be remedied by forcibly breaking it open, unless the key happens to be available. The problems with such an emergency opening are that it takes time to obtain the necessary tools, that if someone is locked inside unnoticed, they may not be able to signal for help depending on the surroundings, and that even a successful forced entry will inevitably result in the destruction of at least the parcel box door.

[0004] The object of the invention is to provide an emergency release unit for a parcel box lock that can be operated from inside the parcel box without tools, has high reliability, enables intuitive operation and is compatible with a parcel box lock with a commercially available rotary push lock and is preferably retrofittable.

[0005] The problem is solved by the features listed in claim 1. Preferred embodiments are set forth in the dependent claims.

[0006] The emergency release unit according to the invention surprisingly provides a solution for providing an emergency release from the inside for common parcel box locks that have a commercially available rotary push-button lock.

[0007] Such a rotary push-button lock is based on the principle of a rotatable and axially displaceable inner lock body that can be locked in a position-dependent manner. The inner lock body is arranged within a hollow cylindrical outer lock body.

[0008] The outer body of the lock is securely connected to the device to be locked, in this case, a parcel box door, according to the present invention. This is preferably achieved by means of a mounting nut that engages in an external thread on the outer casing of the lock body. Flattened sections on the outer casing ensure a positive locking mechanism that prevents rotation relative to the parcel box door.

[0009] The inner lock body is rotatably mounted within the hollow cylindrical outer lock body. A lock shaft is connected to the inner lock body. This allows for different angular positions of the lock shaft, which in turn engages or disengages a subsequent locking mechanism.

[0010] The inner lock body is also mounted to allow axial movement. An axial spring preload holds the lock body in an outer axial position, and the operator can push it into an inner axial position by overcoming the spring force. Furthermore, a spring-loaded locking bolt is arranged on the inner lock body.

[0011] The outer body of the lock features a radial bore, designed as a through-hole and also referred to as a locking bolt receptacle. This bore is positioned according to its angular and axial orientation such that the locking bolt is located at this position and, due to spring preload, can be engaged by an eccentric, i.e., radially outward, movement when the inner body of the lock is in an angular position corresponding to a locking position and simultaneously in its inner axial position.

[0012] A delivery driver can place a parcel in the open parcel box, then lock the door by turning it into the locking position. By subsequently pressing the locking pin in, the driver allows it to spring into the hole, thus locking the parcel box. This locks the parcel box door and protects the parcel from unauthorized access. The owner can then use a key to retract the locking pin against the spring tension via a mechanism inside the lock, so that it no longer protrudes into the locking pin receptacle. This unlocks the lock, and the owner can then turn the lock body to an angle that unlocks the parcel box door.

[0013] However, the rotary push-button lock as such is not the subject of the invention and not part of the emergency release unit according to the invention, but is described in terms of its structure and function only for the purpose of understanding its interaction with the emergency release unit according to the invention.

[0014] In the context of the present invention, a locked state or an unlocked state relates to a state of the rotary push-button lock, hereinafter also referred to as the lock for short. In the locked state, the lock cannot be operated, while in the unlocked state, the lock can be operated.

[0015] Furthermore, in the context of the present invention, a locking state or an unlocking state relates to a state of a locking mechanism or other locking means. In the locking state, locking means such as push rods or swing bolts are engaged in such a way that the parcel box door cannot be opened. In the unlocking state, such engagement is not present and the parcel box door can be opened.

[0016] The directional terms locking rotation direction and opening rotation direction are indications of the direction of a rotational movement around the axis of the lock shaft, whereby the locking rotation direction denotes a direction of rotation that leads to a locking state and conversely the opening rotation direction denotes a direction of rotation that leads to an unlocking.

[0017] The directional and orientation indication "inside" or "outside" means that "inside" points towards the inside of the parcel box and "outside" points in the opposite direction.

[0018] For the purposes of the present invention, a parcel box is understood to be any goods storage container with a lockable door and operation via a rotary push-button lock, whereby the terms parcel box, parcel station, parcel letterbox, parcel storage, parcel compartment, parcel depot, goods storage container and parcel handover container as well as similar terms are also used.

[0019] The emergency release mechanism according to the invention is based on the fact that a solution has been found to both release the locked state of the rotary push-lock and to unlock it by means of a simple rotary movement. This is achieved in detail as described below.

[0020] The emergency release according to the invention comprises as basic components a carrier bushing, a plunger, a rotary slide, a locking drive wheel and a rotary slide actuation.

[0021] The mounting bushing is designed for a rotationally fixed arrangement on the lock body. For this purpose, the mounting bushing has an inner surface or contour that corresponds to the outer surface or contour of the lock body, allowing it to be slid onto it, for example. Rotational rigidity relative to the lock body can be achieved by connecting the mounting bushing to the usual flats of the lock body or by other means, possibly via an additional base plate.

[0022] The carrier bushing has a plunger receptacle that is arranged correspondingly to the locking bolt receptacle. In the intended assembly position, the plunger receptacle is positioned angularly and axially so that it is aligned with the locking bolt receptacle.

[0023] The support beech fulfills two essential functions simultaneously, providing firstly the ram receptacle and secondly the guide for the rotary carriage.

[0024] The plunger is radially displaceable within the plunger receptacle. It comprises a plunger head and a plunger foot. The plunger foot is designed to make pressure contact with the locking bolt, allowing the plunger to depress the locking bolt via this pressure contact, thus unlocking the lock without the need for a key. For this purpose, the plunger is designed to move from a rest position to an actuating position via a radially concentric movement. The actuating position is defined as the position in which the plunger is positioned to depress the locking bolt and unlock the lock.

[0025] The rotary slide is rotatably mounted around the carrier bushing. In its basic form, the rotary slide consists of a ring body with a hollow cylindrical main section, an internal eccentric slide track, and a drive section.

[0026] The support bushing is located inside the hollow cylindrical main section. The support bushing and the rotary slide are arranged concentrically to each other and also concentrically to the lock shaft.

[0027] The internal eccentric slide is a contour on an inner surface designed for angle-dependent actuation of the plunger via pressure contact with the plunger head. Depending on the angle of the rotary carriage, the plunger can either assume its rest position or be depressed via the pressure contact at the plunger head. In this case, the plunger foot acts on the locking bolt, overcoming its spring preload and depressing it to unlock the plunger, thus establishing the actuating position. The transition from the rest position to the actuating position is effected by rotating the rotary carriage in the opening direction.

[0028] Furthermore, the drive section is designed for the transmission of rotary motion to the locking drive wheel. It preferably consists of one or more axially inwardly pointing projections that functionally interact with the locking drive wheel.

[0029] Furthermore, the rotating carriage is equipped with a return spring that acts in the direction of rotation of the locking mechanism. If the rotating carriage is turned in the opening direction by overcoming the spring force of the return spring, the return spring, after the rotating carriage is released, particularly after an emergency release, causes a backward rotation of the rotating carriage in the direction of rotation of the locking mechanism, so that it automatically returns to its initial angular position.

[0030] The rotary carriage actuation is designed for manual rotation of the rotary carriage in the opening direction. The rotary carriage actuation can be designed in various ways. This includes any mechanism that allows the rotary carriage to be manually rotated from the inside in the opening direction. The rotary carriage actuation can be, for example, a cable pull, a rotary handle, or a pivot lever.

[0031] The locking drive wheel is designed for a rotationally fixed arrangement on the lock shaft and preferably located on the inside of the rotary slide. This rotationally fixed arrangement allows the transmission of torque from the lock shaft to the locking drive wheel and vice versa.

[0032] The invention is based on the fact that the locking drive wheel, which is normally arranged on the lock shaft and actuates, for example, push rods or a swing bolt, can be replaced by the locking drive wheel according to the invention. In the case of retrofitting, the existing locking drive wheel can be removed and replaced by the locking drive wheel according to the invention. In the case of new manufacturing, the locking drive wheel according to the invention is mounted directly onto the lock shaft.

[0033] The locking drive wheel has a freewheel contour for angle-dependent actuation of a locking device, into which the drive section of the rotary carriage engages. The freewheel contour, in its interaction with the drive section, is designed such that within a certain freewheel angle, a freewheel rotational movement of the rotary carriage relative to the locking drive wheel is provided, and only when this freewheel angle is exceeded in an opening direction is a rotational movement of the rotary carriage transmitted to the locking drive wheel. The freewheel contour and the drive section are structurally coordinated and can, in particular, each be formed in multiple parts. For example, the freewheel contour is designed in the form of two semicircular elongated slots offset from each other by 180 degrees, into which two axially projecting drive lugs of the drive section engage.

[0034] The freewheel contour allows the rotary carriage to rotate in the opening direction at a structurally easily definable angle, referred to here as the freewheel angle, without simultaneously rotating the locking drive wheel. The freewheel angle is defined such that rotating the carriage by this angle is sufficient to push the plunger from its rest position into the actuating position. In this angular position, the lock is now unlocked, allowing the lock body and the lock shaft to rotate. This rotation in the opening direction within the freewheel angle is also referred to here as the freewheel rotation.

[0035] When the free-running angle is exceeded, the lock is already in the unlocked state due to the preceding free-running rotation. Therefore, during the subsequent positive-locking torque transmission from the rotary slide to the locking drive wheel, the latter, including the lock shaft and the inner lock body, can be rotated further in the opening direction until an unlocked state is reached. At this point, the locking drive wheel moves the locking elements out of their engaged position, thus unlocking the parcel compartment door. The locking elements are the standard locking elements, preferably two counter-rotating push rod bolts, which are articulated to the locking drive wheel in such a way that its rotational movement is converted into a linear movement of the push rod bolts.

[0036] The locking means themselves, like the rotary push-button lock, are not part of the invention and are not part of the emergency release unit according to the invention. Their construction and function are described below to facilitate understanding of their interaction with the emergency release unit according to the invention.

[0037] According to the invention, the emergency release device is designed for a passive state and for opening operation.

[0038] In the passive state, the rotary slide is in a neutral position where the internal eccentric slide has no effect on the plunger. The plunger is therefore in its rest position. The return spring is in its relaxed position. In the passive state, the emergency release device thus has no effect on either the lock or the locking mechanisms.

[0039] In the opening mechanism, the rotary carriage is turned manually in the opening direction against the force of the return spring. The opening mechanism operates in two phases: the first is the unlocking phase, and the second is the unlocking phase.

[0040] During the unlocking phase, the rotary carriage is rotated from its initial angular position in the opening direction by a first angle until it reaches an unlocking position. The plunger is then moved radially concentrically from its rest position to its actuating position by means of the internal eccentric slide, and the locking bolt is depressed and unlocked. This first angle corresponds to the freewheel angle, and the rotational movement within this angle is the freewheel rotation. A characteristic feature of the rotational movement during the unlocking phase is that no rotational movement is transmitted to the locking drive wheel. In this context, the freewheel feature is particularly essential to the invention, as it is only through this feature that rotation of the rotary carriage in the opening direction becomes possible. This is because, at the beginning of the unlocking phase, the locking state is still present, and thus the lock shaft and the locking drive wheel are blocked against rotation.

[0041] During the unlocking phase, the rotary carriage is rotated further in the opening direction from the unlocked position to an unlocked position by a second angle. The freewheel angle is exceeded, so that the rotational movement is transmitted to the locking drive wheel via the drive section and the freewheel contour. The opening rotation continues until the locking mechanism is unlocked by the locking drive wheel in the unlocked position.

[0042] As soon as the rotary carriage is no longer actuated but released by the rotary carriage actuation, the return spring automatically rotates the carriage back in the direction of the locking rotation until the starting angular position is reached.

[0043] The emergency release unit according to the invention advantageously provides a solution in which emergency release from the inside is possible through simple, intuitive operation in a uniform sequence of movements.

[0044] Particularly advantageous is the fact that the two processes of unlocking the lock and unlocking the parcel compartment door are made possible in a single, unified movement sequence.

[0045] Furthermore, it is particularly advantageous that, with the exception of replacing the locking drive wheel, no modifications to existing parcel door locks are necessary. In particular, it is advantageous that the tried and tested, widely used rotary push-button locks do not need to be modified or redesigned.

[0046] The emergency release unit is advantageously composed of only a few components, which can be manufactured cost-effectively and robustly, for example by 3D printing or as injection molded parts, possibly with fiber reinforcement, and can be easily assembled.

[0047] Furthermore, it is advantageous that the emergency release, in a state without actuation (referred to here as the passive state), does not affect the usual function of the lock and the parcel box door locking mechanism. Another advantageous aspect of the invention is that the emergency release unit can be provided as a retrofit kit for parcel boxes already in operation, thus enabling subsequent installation.

[0048] In addition, depending on the circumstances, different rotary carriage actuations can be advantageously provided, for example as a cable pull, rotary handle or rotary lever.

[0049] According to a first advantageous embodiment of the emergency release unit, the rotary slide actuation is designed as a cable pull, wherein, for a motion conversion of a linear cable pull movement into a rotary movement of the rotary slide in the opening direction, a rotary slide-side cable pull end is tangentially attached to the rotary slide.

[0050] According to this further development, the cable pull engages tangentially at a suitable position on the rotary carriage. Furthermore, a handle is preferably arranged at the opposite, user-side end of the cable pull, which can be easily located by touch even in darkness and is also easy to operate by pulling. Additionally, the cable pull's travel can be easily limited, for example by a screw clamp, thus protecting the other components of the emergency release unit from overload due to excessive pulling in a panic situation or from vandalism.

[0051] Following further development of the emergency release unit, an operating handle is attached to an operator-side cable end, which is guided linearly in a guide rail.

[0052] The operating handle according to this further development is preferably easily tactile, and its location in the locked state can preferably be aided by a luminescent color. Furthermore, the emergency opening movement is positively guided by the guide rail.

[0053] This also facilitates intuitive opening of the parcel box door after it has been unlocked.

[0054] According to a further advantageous embodiment of the emergency release unit, it has a base plate which has one or more shaped sections for providing a fixed positional relationship to the carrier bushing and / or for providing a rotatable bearing for the rotary slide.

[0055] This further training advantageously enables a safe and correct positioning of the remaining components and can also support additional holding devices.

[0056] According to a further advantageous development of the emergency release unit, a deflection pulley for redirecting the direction of pull of the cable is arranged on the base plate.

[0057] This advanced training system is based on a combination of a cable pulley and base plate. The pulley allows for cable operation, particularly in an axial, inward direction. This enables the cable to be routed, for example, from the inside of a parcel compartment door, thus facilitating an intuitive pulling direction.

[0058] Insofar as numerals such as first, second or similar are used in the description and in the claims, this does not serve to indicate a specific hierarchy or value, but merely for unambiguous identification and assignment.

[0059] The invention is described as an embodiment by reference to Fig. 1 Exploded view Fig. 2 Single view carrier bushing Fig. 3 Single view turntable Fig. 4 Inside view in starting angle position (as in Fig. 1) Fig. 5 Inside view in unlocked position Fig. 6 Inside view in unlocked position Fig. 7 Individual view of operating handle with guide rail explained.

[0060] In this context, identical reference symbols in different figures refer to the same features or components. These reference symbols are used in the description even if they are not shown in the figure in question.

[0061] Fig. Figure 1 shows an embodiment in an exploded view. In this embodiment, the emergency release unit additionally has a base plate 60. In its intended mounting position, the support bushing 10 surrounds the outer body of the rotary push-button lock a, which is arranged externally and in Fig. 1 is shown on the right. The locking bolt b is also shown in exploded view above the outer lock body c. The carrier bushing 10 has a through-hole at the top as a plunger receptacle 11, which is Fig. Figure 2 shows in more detail and accommodates the plunger 20. In the assembly position, the plunger 20 is arranged in the axis of movement of the locking bolt b, so that the plunger foot 22 can transmit a compressive force radially concentrically onto the locking bolt b. In this embodiment, the plunger head 21 has a support ring for secure positioning.

[0062] The rotary slide 30 is also designed as a ring body, its inner diameter being matched to the outer diameter of the carrier bushing 10. The rotary slide 30, as a two-part drive section 33, has two axially projecting drivers extending inwards. The return spring 34 is arranged on the base body of the rotary slide 30 such that, in the installed position, it transmits a tensile force tangentially in the direction of rotation between the base plate and the rotary slide 30.

[0063] The locking drive wheel 40, which follows axially inwards, has a freewheel contour 41 corresponding to the two-part driver section 33, which in the exemplary embodiment is designed as semicircular arc-shaped elongated slots. In the assembly position, the two drivers each pass through one of the two elongated slots, so that a relative rotational movement of the rotary slide 30 and the locking drive wheel 40 is possible at the angle defined by the angular extent of the elongated slots. This is the freewheel angle.

[0064] The rotary carriage 30 can be manually actuated for emergency release by means of the rotary carriage actuation 50, which in the present embodiment is designed as a cable pull 51. In this case, the rotary carriage 30 is rotated in the opening direction against the spring force of the return spring 34 by the tangentially acting cable pull.

[0065] In this embodiment, a base plate 60 is also provided for the secure positioning of all components. This base plate carries a deflection pulley 54 for the cable pull 51, which is mounted tangentially to the rotary carriage 30 with its rotary carriage-side cable pull end 52.

[0066] Fig. Figure 2 shows a detailed view of the carrier bushing 10. In the present embodiment, the essentially hollow cylindrical inner surface is provided with lateral shaped sections that abut the flats of the outer lock body c, thus creating a positive locking mechanism to prevent rotation with respect to the rotary push-lock a. The plunger receptacle 11 is designed as a through-hole that is matched to the diameter of the plunger 20 and reliably positions the plunger 20 axially and tangentially relative to the outer lock body c and the locking bolt b, enabling concentric radial movement and thus actuation of the locking bolt b.

[0067] Fig. Figure 3 shows a close-up view of the rotary slide 30. This slide has a hollow cylindrical main section 31 that slides on the outer surface of the support bushing 10 and provides the necessary rotation. The internal eccentric slide 32 is positioned axially above the plunger 20. When the rotary slide 30 is rotated into an angular position in which the distance between the surface of the internal eccentric slide 32 and the central axis is reduced, the plunger 20 and with it the locking bolt are pressed in, and the rotary push-lock a is unlocked. The drive section 33, formed by two inwardly directed, axially projecting shaped sections, is also shown.

[0068] The Fig. 4, Fig. 5 and Fig. Figure 6 shows the emergency release device in different operating states from a largely identical perspective, showing an interior view. In this embodiment, a base plate 60 is present, and the locking means 70 are designed as push rods that are articulated proximally to the locking drive wheel 40. The angular relationships between the rotary carriage 30 and the locking drive wheel 40 relative to the base body 60, and thus to the parcel box door, are illustrated by the schematically depicted angle with its arc. The arrow on the arc indicates the direction of rotation for opening.

[0069] In Fig. Figure 4 shows the initial angular position as it exists after the parcel box door is closed using the rotary push-lock a. The locking state corresponds to the angular position of the locking drive wheel 40. Simultaneously, the lock a is in the locked position. The angular position of the rotary slide 30 is in a locking rotation end position, as can be seen from the positional relationship of the driver section 33 to the free-running contour 41. The internal eccentric slide 32 does not act on the plunger 20, which is therefore in its rest position.

[0070] The emergency release device is therefore in the passive position.

[0071] In Fig. Figure 5 shows the unlocking angle position as it exists after completion of the unlocking phase following a rotation of the rotary carriage 30 in the opening direction through the first rotation angle. In this first rotation angle, which is the free-running angle, the drive section 33 can move freely within the free-running contour 41 up to the now present stop. The size of the free-running angle is determined by the free-running contour 41 together with the geometry of the drive section 33. In the present embodiment, this angle is approximately 90 degrees. In this angular position of the rotary carriage 30, the inner eccentric slide 32 is in pressure contact with the plunger head 21 such that the plunger 20 is brought into its actuating position, in which it depresses the locking bolt b. The rotary push-lock a is thus in the unlocked state.However, no rotary movement has yet been transferred to the locking drive wheel 40, so it is in the same angular position as in . Fig. 4. This means that the locking means 70 remain in an unchanged position and thus the locking state continues.

[0072] Fig. Figure 6 shows the unlock angle position after the unlocking phase, achieved by performing a rotational movement of the rotary carriage 30 in the opening direction by a second rotational angle following the first rotational angle. In the present embodiment, the second rotational angle is also approximately 90 degrees. The drive section 33 was already in contact with the opening-side end of the free-running contour 41 in the unlock angle position, so that the rotational movement of the second rotational angle was transmitted from the rotary carriage to the locking drive wheel 40. Furthermore, at the beginning of the unlocking phase, the rotary push-lock a was already unlocked, and the lock shaft was therefore rotatable. The locking drive wheel 40 was rotated—driven by the rotary carriage 30—by this second rotational angle, so that the locking element 70 was now brought into an unlocked position. The unlocked state is present, and the parcel compartment door can be pushed open from the inside.

[0073] Fig. Figure 7 shows a single view of an operating handle 55 with a guide rail 56. According to this embodiment, the user's hand movement is guided linearly. This means that a slight pressure force is intuitively transferred to the inside of the parcel box door, causing it to open outwards after unlocking. Reference symbols used 10 Carrier socket 11. Piston receptacle 20 pestles 21 Piston head 22 Pestle foot 30 turntables 31 hollow cylindrical main section 32 Internal eccentric slide 33 Drive section 40 Locking drive wheel 41 Freewheel contour 50 Rotary carriage operation 51 cable pull 52 Turntable-side cable pull end 53 operator-side cable pull end 54 Pulley 55 Operating handle 56 Guide rail 60 Base plate 70 locking devices

Claims

[1] Emergency release unit for a parcel box lock, wherein the parcel box locking mechanism is designed with a rotary push-button lock which has an inner lock body that is rotatable and axially displaceable in an open state, which carries a lock shaft and which can be locked in a closed state in a rotationally fixed position by means of a locking bolt which springs eccentrically into a locking bolt receptacle in an outer lock body, comprising a carrier bushing (10), a plunger (20), a rotary slide (30), a locking drive wheel (40) and a rotary slide actuation (50), wherein the carrier bushing (10) is designed for a rotationally fixed arrangement on the outer body of the lock and has a plunger receptacle (11) which is arranged corresponding to the locking bolt receptacle, wherein the plunger (20) is arranged to be radially displaceable in the plunger receptacle (11) and has a plunger head (21) and a plunger foot (22) which is designed for pressure contact with the locking bolt and wherein the plunger (20) is designed to be moved from a rest position into an actuating position by means of a radially concentric movement and in the actuating position to press in the locking bolt and unlock it, wherein the rotary slide (30) is rotatably arranged about the carrier bushing (10) and has a hollow cylindrical main section (31), an internal eccentric slide track (32) which is designed for an angle-dependent actuation of the plunger (20) by means of pressure contact with the plunger head (21) and a driver section (33) which is designed for a rotary motion transmission to the locking drive wheel (40) and to which a return spring (34) is assigned which acts in a locking rotation direction, wherein the locking drive wheel (40) is designed for a rotationally fixed arrangement on the lock shaft and for an angle-position-dependent actuation of a locking means (70) and has a freewheel contour (41) into which the driver section (33) engages, wherein the freewheel contour (41) is designed to provide a freewheel rotational movement of the rotary carriage (30) relative to the locking drive wheel (40) at a freewheel angle and to transmit a rotational movement of the rotary carriage (30) to the locking drive wheel (40) when the freewheel angle is exceeded in an opening rotation direction, wherein the rotary carriage actuation (50) is designed for manual rotation of the rotary carriage (30) in the opening direction of rotation wherein the emergency release device is designed for a passive state and for opening actuation, wherein in the passive state the rotary slide is in a starting angular position and the plunger (20) is in the rest position, wherein, in the opening operation by means of manual actuation, in an unlocking phase, the rotary slide (30) is rotated from the initial angular position to an unlocking angular position in the opening direction by a first rotational angle, and the plunger (20) is brought radially concentrically from its rest position to its actuating position by means of the internal eccentric slide (32), and the locking bolt is pressed in and unlocked, wherein the rotational movement takes place within the free-running angle and no rotational movement is transmitted to the locking drive wheel (40),In the unlocking phase, the rotary slide (30) is further rotated in the opening direction from the unlocking angle position to an unlocking position by a second rotation angle, and by exceeding the freewheel angle, the rotational movement is transferred to the locking drive wheel (40) via the driver section (33) and the freewheel contour (41), and in the unlocking position the locking means (70) is unlocked. [2] Emergency release unit for a parcel box lock according to claim 1, characterized by , that the rotary carriage actuation (50) is designed as a cable pull (51), wherein, for a motion conversion of a linear cable pull motion into a rotary motion of the rotary carriage (30), a rotary carriage-side cable pull end (52) is tangentially attached to the rotary carriage (30). [3] Emergency release unit for a parcel box lock according to claim 2, characterized by , that the rotary carriage actuation has an operating handle (55) which is attached to a cable pull end (53) on the operator side and is guided linearly in a guide rail, wherein the guide rail (56) is arranged on the inside of a parcel box door inner wall. [4] Emergency release unit for a parcel box lock according to one of the preceding claims, characterized by that this has a base plate (60) which has one or more shaped sections to provide a fixed positional relationship to the support bushing (10) and / or to provide a rotatable bearing for the rotary slide (30). [5] Emergency release unit for a parcel box lock according to claims 2 to 4, characterized by , that a deflection pulley (54) is arranged on the base plate (60) for deflecting the direction of pull of the cable (52).

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