CN106948673B

CN106948673B - Locking device with two movable locking bodies

Info

Publication number: CN106948673B
Application number: CN201610918890.3A
Authority: CN
Inventors: S.S.巴迪亚; E.朗根施泰因; C.拉德哈克里什南; M.欣德雷尔
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2015-10-22
Filing date: 2016-10-21
Publication date: 2019-12-17
Anticipated expiration: 2036-10-21
Also published as: DE102015220612A1; CN106948673A; ES2696855T3; EP3159466A1; EP3159466B1

Abstract

The invention relates to a locking device (20) for use with a first and a second component (10; 11), wherein the locking device (20) has a first and a separate second housing (30; 40) which can be fastened separately from one another to the respectively associated first or second component (10; 11), wherein a handle (60) is mounted movably on the first housing (30), wherein a first locking body (31) is mounted movably in the first housing (30), which can be coupled movably to the handle (60). According to the invention, the second locking body (41) is movably mounted in the second housing (40), wherein the first and second locking bodies (31; 41) can be brought into a positive engagement in order to lock the locking device (20), wherein the positive engagement can be released not only solely by a movement of the first locking body (31) relative to the first housing (30) but also solely by a movement of the second locking body (41) relative to the second housing (40).

Description

locking device with two movable locking bodies

Technical Field

The invention relates to a locking device according to the preamble of claim 1.

Background

A locking device is known from DE102011018999a 1. The locking device has a first and a second housing, which can be fixed to the assigned first or second component. A handle is movably supported on the first housing, whereby the locking device can be unlocked. Furthermore, a first locking body is movably mounted in the first housing, which is coupled to the handle in a movable manner. The locking device is provided with an emergency unlocking mechanism, so that it can be unlocked without using a key.

One advantage of the locking device is that it is not easily damaged.

Disclosure of Invention

According to claim 1, it is proposed that the second locking body is mounted movably in the second housing, wherein the first and second locking bodies can be brought into a form-fitting engagement in order to lock the locking device, wherein the form-fitting engagement can be released not only solely by a movement of the first locking body relative to the first housing but also solely by a movement of the second locking body relative to the second housing. The first locking body is provided primarily for locking in normal operation, wherein the second locking body is primarily for emergency unlocking. In this way, the two locking bodies can each be optimized particularly easily in the direction of their main function, so that the locking device operates particularly without interference.

The locking device can be unlocked by a movement of the handle, based on a kinematic coupling between the handle and the first locking body. The first and/or second locking body is preferably formed in one piece. They are preferably made of plastic, aluminum or zinc, wherein they are particularly preferably produced by injection molding or injection molding. The second housing is preferably composed of a base body and a cover part. The first housing is preferably constructed in one piece. The base body of the second housing and/or the first housing are preferably made of aluminum or zinc, wherein it is particularly preferred that they are produced by die casting. The cover part is preferably made of plastic, wherein it is particularly preferably produced by injection molding. Preferably, a lock cylinder is provided, by means of which the movement of the first blocking body can be blocked. The locking device can preferably be unlocked by means of the second locking body when the lock cylinder is in the locked state.

The first and/or second member is preferably a profiled bar, which particularly preferably has a constant cross-sectional shape. The profiled bar can be made of aluminum, wherein the profiled bar is produced, for example, by extrusion. It may have at least one undercut, in particular T-shaped groove. The first and/or second member may also be a plate-like planar element, a shutter, a cover, a plate, a panel part, a steel support or guard rail.

Advantageous embodiments and refinements of the invention are specified in the dependent claims.

It can be provided that the first and second locking bodies are each mounted in the associated first or second housing in a linearly movable manner about a common locking axis. The latching engagement between the first and second latching bodies can thereby be established or released in a particularly interference-free manner.

It can be provided that the first and second locking bodies are arranged such that their distance increases during the transition from a locked state to an unlocked state by the movement of the first and/or second locking body. This results in a closure device which requires a particularly small installation space.

Provision may be made for a first spring to be arranged in the first housing, which first spring acts on the first blocking body in the direction of the blocked state, wherein a second spring is arranged in the second housing, which second spring acts on the second blocking body in the direction of the blocked state. In this way, the locking device remains in the locked state as long as it is not actuated. The first and/or second spring is preferably mounted under pretension, wherein they are particularly preferably formed by helical springs. The first and/or second spring is preferably accommodated in a separate accommodation recess in the first or second locking body, whereby the locking device requires a particularly small installation space.

It can be provided that one, the first or the second, latching body has a latching bar, and the other, the second or the first, latching body has a matching latching groove, wherein the latching bar and the latching groove can be brought into positive engagement in order to latch the latching device. The form-fitting latching engagement is thus only made between the first and second latching bodies, the first and second housings not being involved. The latching engagement can thus be established and released again with particularly little interference. The locking bar and the locking groove preferably extend perpendicularly to the locking axis and particularly preferably parallel to the axis of rotation of the handle.

Provision can be made for the second blocking body to have at least one unlocking ramp which is arranged at an angle to the blocking axis. An emergency unlocking can be effected by means of the unlocking ramp, wherein an unlocking tool is preferably used for this purpose. The second locking body preferably has two insertion bevels, which are arranged on opposite sides. Preferably, the locking groove is arranged on the second locking body.

Provision can be made for the handle to be mounted rotatably in the first housing (30) about an axis of rotation. Such a handle can be produced particularly cost-effectively, wherein it can be operated by an operator without problems.

It can be provided that the axis of rotation of the handle is defined by two separate shaft parts which are arranged at a distance from one another, wherein the lock cylinder is arranged between said shaft parts. The locking device thus requires particularly little installation space. The shaft part is preferably of cylindrical design with respect to the axis of rotation of the handle.

Provision can be made for the rotational axis of the handle to be arranged perpendicular to the blocking axis and at a distance from the first or second blocking body, wherein the handle has at least one drive extension which can be brought into form-fitting engagement with the first blocking body. This results in a kinematic coupling between the handle and the first blocking body. This kinematic coupling is preferably releasable, as explained in more detail below. Preferably, said at least one transmission stretch of the handle is arranged between said shaft elements.

It can be provided that the second housing consists of a base body and a cover part, wherein these are locked by means of at least one snap hook, wherein the at least one snap hook is covered by the first housing in the closed state in such a way that it is not accessible from the outside. This prevents the cover part from being able to be detached from the base body in the closed state. The at least one snap hook is preferably integrally formed with the cover portion.

It can be provided that the kinematic coupling between the first blocking body and the handle can be released by a movement of the first blocking body relative to the first housing. This simplifies the assembly and disassembly of the locking device.

Provision can be made for a first fastening means to be provided, by means of which the first housing can be fastened to the assigned first component, wherein the first fastening means are arranged in the interior of the first housing in such a way that they can be accessed from the outside only when the kinematic coupling between the first blocking body and the handle is released. Thereby greatly increasing the difficulty of unauthorized opening of the latch by removal of the first securing mechanism.

It can be provided that the second housing is composed of a base body and a cover part, wherein second fastening means are provided, by means of which the second housing can be fastened to the second component to be dispensed, wherein the second fastening means are arranged in the interior of the second housing in such a way that they are accessible only when the cover part is detached from the base body. Thereby greatly increasing the difficulty of unauthorized opening of the latch by removal of the second securing mechanism.

Furthermore, a combination of a locking device according to the invention and an unlocking tool is claimed, wherein the unlocking tool has a plate-like section, whereby the unlocking tool can be inserted into the gap between the first and second housing, whereby the unlocking tool can be brought into engagement with the second locking body in order to unlock the locking device. The plate-like portion is preferably designed such that it can be brought into contact with the at least one unlocking ramp on the second locking body in such a way that the second locking body is displaced along the locking axis.

It is clear that the features mentioned above and those yet to be explained below can be used not only in the respective given combination but also in further combinations or individually without departing from the scope of the present invention.

The invention is explained in detail below with the aid of the figures.

Drawings

FIG. 1 shows a perspective view of a latching device with assigned components according to the invention;

Fig. 2 shows a sectional view of the closure device according to fig. 1 in the closed state;

FIG. 3 shows a sectional view corresponding to FIG. 2, wherein the locking device is in an unlocked state;

FIG. 4 shows a perspective view of the handle, cover portion and latch body; and

Fig. 5 shows a perspective view of the second housing and the unlocking tool with the dispensed second component.

Detailed Description

FIG. 1 shows a component 10 having a dispensing in accordance with the present invention; 11, a perspective view of the latching device 20. First and second members 10; 11 are preferably profiled rods, respectively, which have a constant cross-sectional shape. The profiled rods are preferably produced from an extruded aluminum profile which has at least one undercut groove 12 on its outer side, which groove is T-shaped in cross section. A member 10; 11 are typically part of a pen for a production facility. The first component 10 is usually part of a movable door of the enclosure, which door is to be closed by the closure device 20. In an emergency, the locking device 20 should also be able to be unlocked without the key 52 that is normally required. For this purpose, an unlocking tool 70 is used, which is explained in detail with reference to fig. 5.

Fig. 1 shows the locking device 20 in a locked state, in which two components 10 are in the locked state; 11 are arranged parallel to each other at a small pitch. The second member 11 is normally arranged in a stationary position.

the latch 20 has first and second housings 30; 40. the first housing 30 is fixed to the first member 11 by a first fixing mechanism, and the second housing 40 is fixed to the second member 11 by a second fixing mechanism. The first and second fixing means are not visible in fig. 1, since they are located in such a way in the respective assigned housing 30; 40, i.e. when the locking device 20 is locked, they are not accessible from the outside. The locking device 20 is thus not able to be removed from the component 10 in the locked state; 11 are disassembled. The first and/or second fixing means preferably comprise a slide and/or a T-bolt (rectangular head bolt) which engage into the assigned undercut groove 12.

On the first housing 30, a separate handle 60 is rotatably supported about a rotational axis 61. The rotation axis 61 of the handle 60 is arranged parallel to the first member 10. Furthermore, a lock cylinder 50 is arranged in the first housing 30, whereby the locking device 20 can be locked by means of a key 52. The rotational axis 51 of the lock cylinder 50 is oriented perpendicular to the rotational axis 61 of the handle 60. The lock cylinder 50 is preferably mounted in such a way that the key 52 is oriented perpendicularly to the axis of rotation 61 of the handle 60 in the locked state, and in the unlocked state it is oriented parallel to the axis of rotation 61 of the handle 60.

Fig. 2 shows a sectional view of the locking device 20 according to fig. 1 in the locked state, in which the lock cylinder (50) is not locked. The sectional plane extends perpendicularly to the rotational axis 61 of the handle 60 and is through the upper transmission stretch 63 at the handle 60 in fig. 4. The first locking body 31 is accommodated in the first housing 30 so as to be linearly movable in the direction of the locking axis 21. In this case, it is pressed by the first spring 32 in the direction of the second housing 40, wherein its movement path is limited by the transmission extension 63. The first spring 32 is mounted under pretensioning between the first housing 30 and the first locking body 31, wherein it is embodied as a helical spring. At the first housing 30, it is guided by a centering pin 35. At the opposite end, the first spring 32 is inserted into a preferably cylindrical receiving recess (reference numeral 34 in fig. 4) in the first locking body 31. The movement path of the first locking body 31 is also limited, away from the second housing 40, and is reached by the first spring 32 to its minimum compression length.

The second locking body 41 is accommodated in the second housing 40 so as to be linearly movable in the direction of the locking axis 21. First and second latch bodies 31; 41 have a substantially uniform rectangular outer contour, viewed in the direction of the blocking axis 21. The second locking body 41 is pressed by the second spring 42 in the direction of the first housing 30, wherein its movement path is limited by a stop strip 85 at the second housing 40, which preferably interacts with a stop lug (reference numeral 80 in fig. 4) at the second locking body 41. In the opposite direction, the movement path of the second locking body 41 is limited in such a way that the second spring 42 reaches its minimum compression length. The second spring 42 is mounted under pretensioning between the second housing 40 and the second locking body 41, wherein it is embodied as a helical spring. At the second housing 40, it is guided by a centering pin 45. At the opposite end, the second spring 42 is inserted into a receiving recess 44 in the second locking body 41, wherein it is also guided there by the centering pin 81.

Fig. 2 shows the locking device 20 in the locked state, in which the locking bar 33 at the first locking body 31 engages in a form-fitting manner in the locking groove 43 at the second locking body 41. Here, the first and second locking bodies 31; 41 each occupy one of the above-mentioned end positions.

The locking bar 33 and the locking groove 43 are each in the associated locking body 31 parallel to the axis of rotation 61 of the handle 60 with a constant, substantially rectangular cross-sectional shape; 41 extend over the entire height thereof. In this case, the locking bar 33 engages with slight play into the locking groove 43, so that the locking device 20 can be moved flexibly. The above arrangement is suppressed in the first and second housings 30 in the locked state; 40 oriented perpendicular to the latch axis 21 and perpendicular to the rotational axis 61 of the handle 60. Of course, a gap can exist between the locking bar 33 and the locking groove 43, whereby the locking body 31; 41, respectively, are limited relative movement. The gap may be, for example, 1 mm.

the locking device 20 can now be unlocked, on the one hand, in that the first locking body 31 is moved relative to the first housing 30 in such a way that the first spring 32 is compressed. This movement can be generated by means of a handle 60, which will be explained in detail with reference to fig. 3. On the other hand, the unlocking can be achieved in that the second locking body 41 is moved relative to the second housing 40 in such a way that the second spring 42 is compressed. This movement can be generated by means of an unlocking tool (number 70 in fig. 5), which will be explained in detail with reference to fig. 5. The unlocking tool is here inserted in the first and second housings 30; 40 until it reaches engagement with the unlocking ramp 48 at the second blocking body 41.

The second housing 40 consists of a base body 46 and a cover part 47, the base body 46 being made of, for example, aluminum or zinc, wherein it is preferably produced by die casting. The cover part 47 is preferably made of plastic, wherein it is particularly preferably produced by injection molding. A first and/or a second blocking body 31; 41 may be made of plastic, aluminum or zinc. The first housing 30 is preferably constructed in one piece. It is made of, for example, aluminum or zinc, wherein it is preferably produced by die casting.

Fig. 3 shows a sectional view corresponding to fig. 2, wherein the locking device 20 is in the unlocked state. This unlocking is effected in that the handle 60 is pivoted about its axis of rotation 61 relative to the position in fig. 2. This can be done, for example, in such a way that the user pulls the handle 60 by means of the actuating section 65 in a direction away from the housing 30. The actuating section 65 projects beyond the first housing 30 in the closed state, so that it can be easily accessed by a user. This unlocking movement causes the transmission stretch 63 to also pivot about the axis of rotation 61. A total of two parallel transmission extensions 63 are provided, which are arranged at a distance from one another in the direction of the axis of rotation 61. The transmission extensions 63 are integrally formed on the handle 60, wherein they are arranged substantially perpendicularly to the locking axis 21 in the locked handle position. The locking extensions are arranged perpendicular to the rotational axis 61 in each handle position. In this case, they are sunk into the drive recess 38 in the first locking body 31 in the handle position shown in fig. 2 and also in fig. 3. The first blocking body 31 is thereby moved by the positive connection during the pivoting movement of the handle 60. The movement path of the handle 60 is limited by the stop extension 36 at the first blocking body 31 and the stop recess 64 at the transmission extension 63. In the handle position shown in fig. 2 as well as in fig. 3, the stop extensions 36 are recessed into the stop recesses 64. In the handle position shown in fig. 3, the stop extensions 36 rest against the side edges of the stop recesses 64 in such a way that the handle can no longer be moved further. In this case, the first locking body 31 has not yet reached its end position. If the second housing 40 does not cover the first locking body 31, the first locking body 31 can be pushed further into the first housing 30 by hand, as a result of which the stop extension 36 can no longer sink into the stop recess 64. The handle 60 can then also be pivoted further, whereby the first fixing means in the interior of the first housing 30 can be accessed from the outside in order to mount the first housing 30 on the first component (number 10 in fig. 1). In the closed state of the closure device 20, the closure body 31 is not accessible from the outside, so that it cannot be moved by hand. The first securing mechanism is thereby inaccessible for removal of the first housing 30 from the first member.

Fig. 4 shows the handle 60, the cover part 47 and the locking body 31; 41 in perspective view. The rotational mounting of the handle 60 about the rotational axis 61 is realized by means of two cylindrical shaft parts 62, which are arranged on the upper and lower lateral edges of the handle 60. The shaft parts each pass through an associated, cylindrical bearing bore in the first housing. In the gap between the two shaft parts 62 are arranged a lock cylinder 50 and two transmission extensions 63. The lock cylinder 50 is in this case arranged between two drive extensions 63, wherein it is fixed to the first housing. The rotational axis 51 of the lock cylinder is oriented perpendicular to the rotational axis 61 of the handle 60. The above-mentioned rotation axis 51; 61 can intersect one another or be arranged at a small distance from one another, which can be 7mm, for example. The lock cylinder 50 has an extension with a flat closing face 53. The closing surface 53 is arranged parallel to the axis of rotation 51 of the lock cylinder 50, wherein it can be pivoted by 90 ° by turning the key (number 52 in fig. 1). In fig. 4, the closing surface 53 is arranged horizontally below the closing extension 83 at the first locking body 31, so that the lock cylinder 50 does not impede the movement of the first locking body 31. If the closing surface 53 is moved into a vertical position by means of a key, so that the closing surface 53 is oriented parallel to the surface of the closing stretch 83 visible in fig. 4, the first blocking body 31 is held in the blocking position by the lock cylinder 50 in a positive-locking manner. A gap, which is, for example, 0.3mm, can be provided between the first closing body 31 and the closing surface 53. The locking device can thus only be unlocked by moving the second locking body 41, which can be achieved only by means of an unlocking tool (reference numeral 70 in fig. 5).

The cover part 47 has a fastening recess 82 on the inside at the side edge facing away from the first housing, into which a mating fastening pin on the base body of the second housing engages in a form-fitting manner. At the opposite side edges, a total of two snap hooks 49 are currently arranged, by means of which the cover part 47 can be snapped onto the base body. In the closed state of the locking device, the latching hook 47 is covered by the first housing, whereby the latching connection cannot be released. Only in the unlocked state can the cover part 47 be detached from the base body, so that the second fastening means in the interior of the second housing can be accessed. The snap hook 47 is preferably integrally formed on the cover part 47. In order to prevent the closed cover part 47 from moving in the direction of the housing 30, a lateral strip 88 with a stop surface 87 is arranged in the cover part 47.

Fig. 5 shows a perspective view of the second housing 40 with the dispensed second member 11 and the unlocking tool 70. The unlocking tool 70 has a plate-like section 71 which can be inserted into a gap (reference numeral 13 in fig. 2) between the first and second housings 40 and the first and second members 11. It is to be noted here that, in the simplest conceivable case, the unlocking tool 70 is a rectangular plate whose thickness is smaller than the gap. To unlock the locking device, this plate is inserted into the gap until it makes touching contact with the unlocking ramp 48 at the second locking body 41. If the plate now continues to be pushed in, the second blocking body 41 is moved along the blocking axis (number 21 in fig. 2) against the pressure of the second spring. The latching engagement between the first and second latching bodies 41 can thereby be released.

However, it is provided that the unlocking ramp 48 extends over the entire height of the second locking body 41. As can be seen from fig. 4, this is not the case at present, however, because the ribs 84 are present on both sides next to the unlocking surface 48, which significantly increases the difficulty of unlocking with a simple plate. Only authorized persons with unlocking tools can thus unlock the locking device.

The unlocking tool 70 shown in fig. 5 has a support part 72 which can be inserted into the gap between the first and second component 11 just so far that it does not touch the first and second housing 40. For this purpose, the support part 72 is provided with a stop section 74, which can be brought into contact with the first and second component 11. The actuating element 73 is mounted on the support element 72 so as to be linearly movable, wherein a spring (not visible in fig. 5) is arranged between the support element 72 and the actuating element 73, which spring presses the actuating element 73 into the end position shown in fig. 5.

The operating member 73 has an operating button 75 and an operating tongue 76. The operating tongue 76 passes through the support member 72 in the moving direction of the operating member 73. This direction of movement extends perpendicularly to the blocking axis (reference numeral 21 in fig. 2) and perpendicularly to the direction of extension of the first or second component 11. If the button is now pressed against the member 11, the operating tongue 76 touches the contact unlocking ramp 48 in the same way as the plate described above. In order that the rib (number 84 in fig. 4) does not interfere with this engagement, the width of the operating tongue 76 is smaller than the width of the unlocking ramp (number 48 in fig. 4). Furthermore, the end 77 of the actuating tongue 76 is of particularly narrow design.

List of reference numerals

10 first member

11 second member

12 undercut groove

13 gap

20 locking device

21 axis of locking

30 first casing

31 first closing body

32 first spring

33 locking strip

34 receiving space

35 centering pin

36 stop extension

38 drive clearance

40 second casing

41 second closing body

42 second spring

43 locking groove

44 receiving space

45 centering pin

46 base body

47 cover part

48 unblock inclined plane

49 Snap hook

50 lock core

51 Lock core axis of rotation

52 Key

53 closing surface

60 handle

61 axis of rotation of handle

62 shaft component

63 drive extension

64 stop clearance

65 operating section

70 unlocking tool

71 plate-type section

72 support member

73 operating part

74 stop segment

75 operating button

76 operating tongue

77 end of the operating tongue

80 stop lug

81 centering pin

82 fixed clearance

83 closing the extension

84 Rib

85 stop bar

86 handle rotation stop

87 stop surface

88 ribs.

Claims

1. Locking device (20) for use with a first and a second component (10; 11), wherein the locking device (20) has a first and a separate second housing (30; 40) which can be fastened separately to the respectively assigned first or second component (10; 11), wherein a handle (60) is mounted movably on the first housing (30), wherein a first locking body (31) is mounted movably in the first housing (30), wherein the first locking body can be coupled movably to the handle (60), characterized in that a second locking body (41) is mounted movably in the second housing (40), wherein the first and second locking bodies (31; 41) can be brought into a form-fitting engagement for locking the locking device (20), wherein the form-fitting engagement can be brought about not only solely by a movement of the first locking body (31) relative to the first housing (30) but also solely by the second locking body (41) The movement relative to the second housing (40) is released, wherein the first and second locking bodies (31; 41) are each mounted in the associated first or second housing (30; 40) so as to be linearly movable about a common locking axis (21), wherein a first spring (32) is arranged in the first housing (30) and loads the first locking body (31) in the direction of the locked state, wherein a second spring (42) is arranged in the second housing (40) and loads the second locking body (41) in the direction of the locked state, wherein the second locking body (41) has at least one unlocking ramp (48) which is arranged at an angle to the locking axis (21).

2. A locking device according to claim 1, wherein the first and second locking bodies (31; 41) are arranged such that their distance increases during the transition from a locked state to an unlocked state by the movement of the first and/or second locking body (31; 41).

3. A locking device according to claim 1 or 2, wherein a lock cylinder (50) is accommodated in the first housing (30), by means of which lock cylinder the movement of the first locking body (31) can be blocked.

4. A latching device according to claim 1 or 2, wherein one, first or second, latching body (31) has a latching bar (33), wherein the other, second or first, latching body (41) has a matching latching groove (43), wherein the latching bar (33) and the latching groove (43) can be brought into form-fitting engagement in order to latch the latching device (20).

5. A closure device according to claim 1 or 2, wherein the handle (60) is rotatably supported in the first housing (30) about a rotational axis (61).

6. A locking arrangement according to claim 5, wherein the axis of rotation (61) of the handle (60) is defined by two separate shaft parts (62) which are arranged at a distance from one another, wherein the lock cylinder (50) is arranged between said shaft parts (62).

7. Locking device according to claim 5, wherein the rotational axis (61) of the handle (60) is arranged perpendicular to the locking axis (21) and at a distance from the first or second locking body (31; 41), wherein the handle (60) has at least one transmission extension (63) which can be brought into a form-fitting engagement with the first locking body (31).

8. A closure device according to claim 1 or 2, wherein the second housing (40) consists of a base body (46) and a cover part (47), wherein they are locked by means of at least one snap hook (49), wherein the at least one snap hook (49) is covered by the first housing (30) in the closed state in such a way that it is not accessible from the outside.

9. A latching device according to claim 1 or 2, wherein the kinematic coupling between the first latching body (31) and the handle (60) can be released by a movement of the first latching body (31) relative to the first housing (30).

10. Latching device according to claim 9, wherein a first fixing means is provided, by means of which the first housing (30) can be fixed to the assigned first component (10), wherein the first fixing means is arranged in the interior of the first housing (30) in such a way that they can be accessed from the outside only when the kinematic coupling between the first latching body (31) and the handle (60) is released.

11. A closure device according to claim 1 or 2, wherein the second housing (40) consists of a base body (46) and a cover part (47), wherein second fastening means are provided, by means of which the second housing (40) can be fastened to the second assigned component (11), wherein the second fastening means are arranged in the interior of the second housing (40) in such a way that they are accessible only when the cover part (47) is detached from the base body (46).

12. Combination of a locking device (20) according to one of the preceding claims and an unlocking tool (70), wherein the unlocking tool (70) has a plate-like section (71), whereby the unlocking tool can be inserted into the gap (13) between the first and second housing (30; 40), whereby the unlocking tool can be brought into engagement with the second locking body (41) in order to unlock the locking device (20).