DK178236B1

DK178236B1 - Locking Mechanism

Info

Publication number: DK178236B1
Application number: DK201400067A
Authority: DK
Inventors: Niels Marcus Pedersen; Jakob Grupe Larsen
Original assignee: Marcus P Holding Aps
Priority date: 2014-02-05
Filing date: 2014-02-05
Publication date: 2015-09-14
Also published as: DK201400067A1

Abstract

A locking mechanism (30) for mechanically fixing an attachment member (2) to at least one fixation member (4) is disclosed. The locking mechanism (30) comprises an attachment member (2) and at least one fixation member (4). The attachment member (2) comprises a displacement member (6) being slidably mounted to or configured to be slidably mounted to the at least one fixation member (4). The locking mechanism (30) comprises a rotation member (8) rotably mounted to the displacement member (6). The locking mechanism (30) comprises at least one resilient member (14, 16) provided between the at least one fixation member (4) and the displacement member (6). The locking mechanism (30) comprises a first contact member (12) that is arranged in such a manner that the contact member (12) is displaced towards the fixation member (4) due to rotation of the rotation member (8) and that the at least one resilient member (14, 16) hereby is compressed so that the displacement member (6) is attached to the at least one fixation member (4) and that the first contact member (12) that is arranged in such a manner that the displacement member (6) is displaceable along the least one fixation member (4). The first contact member (12) is rotably mounted to the rotation member (8). The invention also discloses an apparatus such as a chair, a table, a shelf or a sack trolley comprising such locking mechanism.

Description

Locking Mechanism Field of invention

The present invention generally relates to a locking mechanism. The present invention more particularly relates to a locking mechanism for mechanically fixing an attachment member to at least one fixation member. The present invention also relates to an apparatus such as a chair, a table, a sack trolley or a shelf comprising such locking mechanism.

Prior art

In many applications locking mechanisms are required. One example of such applications is chairs having vertically displaceable seats. In these applications the seat is attached to (a pair of) rods or pipes or other fixation members.

One of the drawbacks associated with the prior art solution is that the locking mechanism either make scratches on the fixation member or require a relative complex locking action e.g. by means of screws. Moreover, the prior art locking mechanisms are often restricted to be adjusted within a predefined setting positions.

Accordingly, there is need for an improved and simpler and more user friendly locking mechanism.

US 2009/0023559 A1 discloses an exercise device having a positionable component configured to be positioned by a user. The positionable component includes a member that is slidably mounted. The positionable component can be fixed in a position by using a locking assembly which is configured to be locked in a selected position. The positionable component can be released by using a locking assembly. The locking assembly includes a cam pivotably mounted to a collar and a cam follower assembly selectively biased by the cam against a portion of the member disposed inside the collar. The locking assembly includes a pair of engagement members provided inside the collar opposite the cam against which the cam biases the member.

Since this solution is complex and expensive is desirable to have an improved and simpler and more user friendly locking mechanism.

It is an object of the present invention to provide an improved and simpler and more user friendly locking mechanism.

Summary of the invention

The object of the present invention can be achieved by a locking mechanism as defined in claim 1 and by an apparatus as defined in claim 9. Preferred embodiments are defined in the dependent sub claims, explained in the following description and illustrated in the accompanying drawings.

The locking mechanism according to the invention is a locking mechanism for mechanically fixing an attachment member to at least one fixation member, which locking mechanism comprises an attachment member and at least one fixation member, where the attachment member comprises a displacement member being slidably mounted to or being configured to be slidably mounted to the at least one fixation member, where the locking mechanism comprises a rotation member rotably mounted to the displacement member, where the locking mechanism comprises at least one resilient member provided between the at least one fixation member and the displacement member. The locking mechanism comprises a first contact member that is arranged in such a manner that the contact member is displaced towards the fixation member due to rotation of the rotation member and that the at least one resilient member hereby is compressed so that the displacement member is attached to the at least one fixation member and that the first contact member that is arranged in such a manner that the displacement member is displaceable along the least one fixation member, wherein the first contact member is rotably mounted to the rotation member.

Hereby it is possible to provide an improved, simple, user friendly and stepless locking mechanism.

The at least one fixation member may be any suitable type of fixation member, such as a rod, a pipe or a plate.

The rotation member may be a seat, a plate member or a rotation member of any other suitable type.

The at least one resilient member may be made of rubber or another suitable resilient material that is capable of being axially compressed so that the friction between the resilient member and the fixation member is increased.

The resilient member may be provided with a surface structure in order to increase the friction between the resilient member and the fixation member.

The first contact member may have any suitable shape. The shape of the contact member may be cylindrical by way of example.

It is an advantage that the first contact member is rotably mounted to the rotation member.

Hereby it is possible to gradually increase the friction between the resilient member and the fixation member.

It may be beneficial that the displacement member extends along the periphery of the fixation member and hereby encloses the fixation member.

Hereby it is possible to provide a robust and secure locking mechanism that can be kept firmly attached to the fixation member.

It may be advantageous that at least one resilient member is attached to the displacement member.

Hereby it is possible to slide the displacement member along the fixation member and keep the resilient member positioned in such a position that the locking mechanism is capable of providing an effective and appropriate locking.

It may be beneficial that an additional contact member configured to transfer force from the first contact member towards the fixation member is arranged between the first contact member and the fixation member.

Hereby it is possible to distribute the pressure towards the resilient member more evenly.

It may be an advantage that the additional contact member may be plateshaped.

It may be advantageous that the first contact member is mounted on a first shaft member.

Hereby it is possible to rotably mount the first contact member to the displacement member so that a gradually increasing force towards the fixation member can be achieved due to rotation of the rotation member.

It may be beneficial that the rotation member is rotably mounted to the displacement member by means of at least one second shaft member extending parallel to the at least one first shaft member.

Hereby it is possible to provide a locking mechanism that gradually increases the friction between the resilient member and the fixation member due to rotation of the rotation member.

It may be advantageous that the contact member is arranged in such a manner that it is displaced at the maximum extend towards the fixation member when the rotation member extends perpendicular to the fixation member.

Hereby it is possible to provide suitable locking mechanisms for chairs, tables, shelves comprising a plate member that needs to be held in a basically horizontal and perpendicular to vertically extending fixation members.

It may be beneficial that the locking mechanism comprises means for forcing an additional contact member away from the fixation member.

Hereby it is possible to ease the sliding of the locking mechanism when operated in an "unlocked" position.

It may be an advantage that the means for forcing the additional contact member away from the fixation member comprises a number of springs.

The object of the invention may be achieved by an apparatus comprising a seat or plate member and a locking mechanism according to one of the preceding claims.

Hereby it is achieved that the position of the seat or plate member of the apparatus can be adjusted in an easy, fast and secure manner.

It may be an advantage that the apparatus is a furniture being a chair comprising a seat and a locking mechanism according to the invention.

Such chair is easy to use and makes it possible to adjust the position of the seat steplessly.

It may be an advantage that the chair comprises one or more parallel pipe members and that the locking mechanism is slidably mounted to the one or more parallel pipe members.

The pipe members may be pipes, rods or other members allowing for attachment of the locking mechanism.

It may be an advantage that the apparatus is a furniture being a table comprising a table plate and a locking mechanism according to the invention.

It may be an advantage that the table comprises one or more parallel pipe members and that the locking mechanism is slidably mounted to the one or more parallel pipe members or rod members.

It may be advantageous that the apparatus is a furniture being a shelf comprising a plate member and a locking mechanism according to the invention.

Hereby the shelf is easy to use and moreover it is possible to adjust the position of the plate member steplessly.

It may be an advantage that the shelf comprises one or more parallel pipe members and that the locking mechanism is slidably mounted to the one or more parallel pipe members.

It may be beneficial that the apparatus is a sack trolley comprising a plate member and a locking mechanism according to the invention.

It may be advantageous that the at least one fixation member is a pipe or a rod having a circular cross-section.

If only one fixation member having a circular cross-section is applied, rotation about the longitudinal axis of the fixation member is possible. This may be beneficial in some applications.

On the other hand, it may be beneficial that the at least one fixation member is a pipe or a rod having a polygonal cross-section, such as a triangular, rectangular or pentagonal cross-section.

Hereby rotation about the longitudinal axis of the fixation member can be prevented.

It may be an advantage that at least one fixation member is a plate.

It may be preferred that the locking mechanism comprises a stop member configured to prevent the rotation member from rotation further when the rotation member has been brought into a predefined position, in which position the rotation member extends basically perpendicular to the fixation member.

Description of the Drawings

The invention will become more fully understood from the detailed description given herein below. The accompanying drawings are given by way of illustration only, and thus, they are not limitative of the present invention. In the accompanying drawings:

Fig. 1 a) shows a schematically perspective view of locking mechanism according to the invention;

Fig. 1 b) shows another schematically perspective view of the locking mechanism shown in Fig. 1 a);

Fig. 1 c) shows a schematically top view of the locking mechanism shown in Fig. 1 a) and in Fig. 1 b);

Fig. 2 a) shows a schematically view of a locking mechanism in an unlocked position;

Fig. 2 b) shows a schematically view of the locking mechanism shown in

Fig. 2 a) being brought into a locked position;

Fig. 2 c) shows a schematically view of a locking mechanism shown in Fig.

2 a) and in Fig. 2 b) in a locked position;

Fig. 3 a) shows a schematically perspective view of a chair;

Fig. 3 b) shows a schematically side view of the chair shown in Fig. 3 a);

Fig. 4 a) shows a side view of a chair in state in which the locking mechanism has been brought into an unlocked position;

Fig. 4 b) shows a side view of the chair shown in Fig. 3 a) in state in which the locking mechanism has been brought into a locked position; Fig. 5 shows a close-up view of the seat of a chair;

Fig. 6 shows an exploded view of a chair;

Fig. 7 shows different views of a sack trolley;

Fig. 8 shows different views of a shelf and

Fig. 9 shows different views of a table.

Detailed description of the invention

Referring now in detail to the drawings for the purpose of illustrating preferred embodiments of the present invention, different views of a locking mechanism 30 according to the invention are illustrated in Fig. 1.

Fig. 1 a) illustrates a schematically perspective view of locking mechanism 30 according to the invention. The locking mechanism 30 is slidably attached to a fixation member 4 shaped as a pipe having a cylindrical shape with a circular cross-section.

The locking mechanism 30 comprises an attachment member 2 having a displacement member 6 that surrounds the pipe-shaped fixation member 4. A first resilient member 14 and a second resilient member 16 both shaped as rubber brushings are provided between the fixation member 4 and the interior periphery of the displacement member 6.

The attachment member 2 comprises a rotation member 8 that is rotably mounted to the displacement member 6 by means of a shaft member 10. A plate-shaped contact member 20 is arranged between the rotation member 8 and the fixation member 4.

An intermediate member 18 is provided between the contact member 20 and the fixation member 4. The intermediate member 18 may be omitted or be integrated within the contact member 20. Moreover, the second resilient member 16 is arranged between the fixation member and the intermediate member 18.

A cylindrical contact member 12 rotably mounted to the rotation member 8 has been brought into contact with the plate-shaped contact member 20. The contact member 12 is rotably mounted to the rotation member 8 by means of a shaft member 22.

By rotating the rotation member 8 it is possible to displace the contact member 12 away from the plate-shaped contact member 20 so that the resilient members 14, 16 will be less compressed. Hereby it is possible to "unlock" the locking mechanism 30 by rotating the rotation member 8.

Fig. 1 b) illustrates another schematically perspective view of the locking mechanism shown in Fig. 1 a). It can be seen that the fixation member 4 is straight and has a longitudinal axis X. The attachment member 2 of the locking mechanism 30 is slidably mounted to the fixation member 4. The displacement member 6 is locked to the fixation member 4 since the rotation member 8 has been brought in to a position in which it extends basically perpendicular to the fixation member 4.

Fig. 1 c) illustrates a schematically top view of the attachment member 2 of the locking mechanism 30 shown in Fig. 1 a) and in Fig. 1 b). It can be seen that the fixation member 4 has a circular cross-section and that the first resilient member 14 and the second resilient member 16 are shaped as two identical structures constituting a ring structure enclosing the fixation member 4.

The attachment member 2 comprises a displacement member 6 comprising two parallel wall members 74, 74'. The rotation member 8 is rotably mounted to the wall members 74, 74' of the displacement member 6 by means of a shaft member 10 extending from the first wall member 74 towards the second wall member 74'.

A cylindrical contact member 12 is rotably mounted to the rotation member 8 by means of a shaft member 22.

Fig. 2 a) illustrates a schematically view of a locking mechanism 30 according to the invention in an unlocked position. The locking mechanism 30 comprises an attachment member 2 that is slidably attached to a fixation member 4 having a longitudinal axis X.

The attachment member 2 comprises a first resilient member 14 and a second resilient member 16 arranged between the fixation member 4 and a displacement member 6. A first contact member 12 having a circular cross-section is rotably mounted to the displacement member 8. A plate-shaped rotational member 8 is rotably mounted to the displacement member 6 by means of a shaft having a rotational axis 24. It is an advantage that the first contact member 12 can rotate while being brought into contact with the contact member 20.

A stop member 38 is attached to the rotational member 8 and a plate-shaped second contact member 20 is arranged adjacent to the second resilient member 20. The first contact member 12 has not been brought into mechanical contact with the second contact member. Accordingly, the second resilient member 16 is non-compressed and has a thickness 02-

Fig. 2 b) illustrates a schematically view of the locking mechanism 30 shown in Fig. 2 a) being brought into a locked position. The rotation member 8 has been rotated clockwise and thus the first contact member 12 has been brought into mechanical contact with the second contact member 20 and a force Fi is applied to the second contact member 20 by the first contact member 12.

Fig. 2 c) illustrates a schematically view of a locking mechanism 30 shown in Fig. 2 a) and in Fig. 2 b) in a locked position. The attachment member 2 of the locking mechanism 30 has been locked by rotating the rotation member 8 clockwisely into the position that it has in in Fig. 2 c). The rotation member 8 extends perpendicular to the longitudinal axis X of the fixation member 4. Thus, the first contact member 12 has been brought into contact with the second contact member 20 and the second resilient member 16 has been compressed to such an extent that the friction between the fixation member 4 and the resilient members 14, 16 is sufficient large to keep the attachment member 2 kept firmly attached to the fixation member 4.

A force F2 is applied on the second contact member 20 by the first contact member 12. Accordingly, the second resilient member 16 is compressed and thus the thickness di of the second resilient member 16 is decreased compared to the thickness d2 of the second resilient member in Fig. 2 b) and in Fig. 2 a).

Moreover, the stop member 38 attached to the rotation member 8 has been brought into contact with the second contact member 20 working as a stop plate. Hereby it is achieved that further clockwise rotation of the rotation member 8 can be prevented.

Fig. 3 a) illustrates a schematically perspective view of a chair 26. The chair 26 comprises a locking mechanism. The locking mechanism has an attachment member 2 that is slidably attached to a frame 36 comprising a first pipe member 32 and a second pipe member 34.

The chair 26 comprises a seat 28 rotably attached to the attachment member 2. The frame 36 has a first foot member 40 and a second foot member 40'.

The angle between the seat and the longitudinal axis X of the first and second pipe members 32, 34 is a (about 90 degrees).

Fig. 3 b) illustrates a schematically side view of the chair 26 shown in Fig. 3 a), the angle between the seat 28 and the longitudinal axis X is β (about 90 degrees).he displacement member 6 is locked to the pipe members and thus the chair 26 can be loaded e.g. by a person sitting on it.

Fig. 4 a) illustrates a side view of a chair 26 in state in which the attachment member 2 of the locking mechanism has been brought into an unlocked position. The chair 26 illustrated in Fig. 4 corresponds to the chair shown in Fig. 3.

The seat 28 has been brought into an upright position, in which the displacement member can be slided along the longitudinal axis X of the fixation members to which the attachment member 6 is slidably attached.

The chair rests on a foot member 40 and the attachment member 2 comprises a stop member 38 configured to prevent the seat 28 from being further rotated when the seat 28 has been brought into a position in which it extends perpendicular to the fixation members.

Fig. 4 b) illustrates a side view of the chair 26 shown in Fig. 3 a) in state in which the locking mechanism has been brought into a locked position. The seat 28 has been brought into a position in which it extends perpendicular to the fixation members.

Fig. 5 illustrates a close-up view of the seat 28 of the chair shown in Fig. 3 and 4.

The seat 28 is slidably mounted to a fixation member 4. Thus the seat 28 can be slided along the longitudinal axis X of the fixation member 4. The seat is rotably mounted to the attachment member 2 of the chair by means of a shaft member 10, whereas the contact member (not shown) is rotably mounted to the attachment member 2 by means of a shaft member 22.

Fig. 6 illustrates an exploded view of a chair 26.

The chair 26 comprises a frame 36 having a first pipe member 32 and a second pipe member 34 extending parallel to the first pipe member 32. The frame 36 moreover comprises two foot members 40, 40'.

The chair comprises a seat 28 provided with four holes 42 for receiving attachment means (e.g. screws) for attaching the seat 28 to an underlying U-shaped plate member 44 provided with holes 46 corresponding to the holes 42 of the seat 28.

The U-shaped plate member 44 is provided with holes 48, 50 for receiving shaft members 10, 22.

A cylindrical contact member 12 is arranged centrally on the shaft member 22. The contact member 12 is configured to bear against a plate-shaped contact member 52 and hereby press the plate-shaped contact member 12 towards the frame 36.

The chair 26 comprises a U-shaped member 54 provided with springs 60'.

The U-shaped member 54 is configured to receive a holding member 56 that is adapted to bear against the pipe members 32, 34. A first resilient member 14 is arranged next to the U-shaped member 54. However, the first resilient member 14 may in practice be attached to the holding member 56. A holding member 58 configured to be bear against the pipe members 32, 34 and to receive a second resilient member 16. Springs 60 are provided at the holding member 58.

The springs 60, 60' are configured to push against the plate 52 and the U-shaped member 54 away from the pipe members 32, 34 in order to ease the displacement of the seat 28 along the pipe members 32, 34 when the seat is brought into an unlocked position.

Fig. 7 illustrates different views of a sack trolley 62. The sack trolley 62 comprises a locking mechanism. The sack trolley 62 comprises a plate member 66 that is slidably attached to a first track 70 and a second track 72 extending parallel to the first track 70. The plate member 66 is rotably attached an attachment member 2.

Fig. 7 a) shows a side view of the sack trolley 62 with the plate member 66 arranged in a locked position.

Fig. 7 b) shows a perspective view (seen from above) of the sack trolley 62 with the plate member 66 arranged in a locked position.

Fig. 7 c) shows a perspective view (seen from below) of the sack trolley 62 with the plate member 66 arranged in a locked position.

Fig. 7 d) shows a side view of the sack trolley 62 with the plate member 66 arranged in an unlocked position.

Fig. 7 e) shows a perspective view (seen from above) of the sack trolley 62 with the plate member 66 arranged in an unlocked position.

Fig. 7 f) shows a perspective view (seen from below) of the sack trolley 62 with the plate member 66 arranged in an unlocked position.

Fig. 8 illustrates different views of a shelf 64. The shelf 64 comprises a locking mechanism according to the invention.

The shelf 64 comprises a plate member 66 that is slidably attached to a first pipe member 32 and a second pipe member 34 extending parallel to the first pipe member 32. The plate member 66 is rotably attached to two attachment members 2.

Fig. 8 a) shows a side view of the shelf 64 with the plate member 66 arranged in an unlocked and upright position.

Fig. 8 b) shows a perspective view (seen from above) of the shelf 64 with the plate member 66 arranged in a locked position.

Fig. 8 c) shows a perspective view (seen from below) of the shelf 64 with the plate member 66 arranged in a locked position.

Fig. 8 d) shows another perspective view the shelf 64 with the plate member 66 arranged in an unlocked position.

Fig. 8 e) is a side view of the shelf 64 with the plate member 66 arranged in a locked position.

Fig. 8 f) shows a side view of the shelf 64 with the plate member 66 arranged in an unlocked position.

Fig. 9 shows different views of a table 68.

The table 68 is configured to be wall mounted and it comprises a plate member 66 that is slidably attached to a first pipe member 32 and a second pipe member 34 extending parallel to the first pipe member 32. The plate member 66 is rotably attached to an attachment member 2.

Fig. 9 a) shows a perspective view of the table 68 with the plate member 66 arranged in a locked position.

Fig. 9 b) shows a perspective view (seen from above) of the table 68 with the plate member 66 arranged in an unlocked position.

Fig. 9 c) shows a perspective view (seen from below) of the table 68 with the plate member 66 arranged in a locked position.

Fig. 9 d) shows a perspective view the table 68 with the plate member 66 arranged in an unlocked position.

Fig. 9 e) is a side view of the table 68 with the plate member 66 arranged in a locked position.

Fig. 9 f) shows a side view of the table 68 with the plate member 66 arranged in an unlocked position.

List of reference numerals 2 Attachment member 4 Fixation member 6 Displacement member 8 Rotation member 10 Shaft member 12, 20 Contact member 14, 16 Resilient member 18 Intermediate member 22 Shaft member 24 Axis of rotation 26 Chair 28 Seat 30 Locking mechanism 32 First pipe member 34 Second pipe member 36 Frame 38 Stop member 40, 40' Foot member 42 Hole 44 Plate member 46, 48 Hole 52 Plate 54 U-shaped member 56, 58 Holding member 60, 60' Spring 62 Sack trolley 64 Shelf 66 Plate member 68 Table 70, 72 Track 74, 74' Wall member X Longitudinal axis di, d2 thickness

Fi, F2 Force α, β Angle

Claims

1. Lukkemekanisme (30) til mekanisk fastgørelse af et fastgørelseselement (2) til mindst én monteringsenhed (4), hvilken lukkemekanisme (30) omfatter et fastgørelseselement (2) og mindst én monteringsenhed (4), hvor fastgørelseselementet (2) omfatter en forskydningsenhed (6), som er forskydeligt monteret eller udformet til at kunne monteres forskydeligt på den mindst ene monteringsenhed (4), hvor lukkemekanismen (30) omfatter et drejeligt element (8), som er drejeligt monteret på forskydningsenheden (6), hvor lukkemekanismen (30) omfatter mindst én fleksibel element (14, 16), som er tilvejebragt mellem den mindst ene monteringsenhed (4) og forskydningsenheden (6), kendetegnet ved, at lukkemekanismen (30) omfatter en første kontaktenhed (12), som er placeret på en sådan måde, at kontaktenheden (12) forskydes hen imod monteringsenheden (4), når det drejelige element (8) drejes, og at den mindst ene fleksible element (14, 16) herved sammenpresses, så forskydningsenheden (6) fastgøres til den mindst ene monteringsenhed (4), og at den første kontaktenhed (12) er placeret på en sådan måde, at forskydningsenheden (6) kan forskydes langs den mindst ene monteringsenhed (4), hvor den første kontaktenhed 12 er drejeligt monteret på det drejelige element (8).A closure mechanism (30) for mechanically fastening a fastener (2) to at least one mounting unit (4), said closure mechanism (30) comprising a fastener (2) and at least one mounting unit (4), wherein the fastener (2) comprises a shear unit (6) which is slidably mounted or configured to be slidably mounted on the at least one mounting unit (4), wherein the closure mechanism (30) comprises a pivot member (8) pivotally mounted on the displacement unit (6), wherein the closure mechanism ( 30) comprises at least one flexible element (14, 16) provided between the at least one mounting unit (4) and the displacement unit (6), characterized in that the closing mechanism (30) comprises a first contact unit (12) located on such that the contact unit (12) is displaced towards the mounting unit (4) when the rotatable element (8) is rotated and the at least one flexible element (14, 16) is thereby compressed so that the displacement unit ( 6) is attached to the at least one mounting unit (4) and the first contact unit (12) is positioned in such a way that the displacement unit (6) can be displaced along the at least one mounting unit (4), where the first contact unit 12 is rotatable mounted on the swivel element (8).

2. Lukkemekanisme (30) ifølge krav 1, kendetegnet ved, at forskydningsenheden (6) strækker sig langs monteringsenhedens (4) periferi og herved omslutter monteringsenhedens (4).Closing mechanism (30) according to claim 1, characterized in that the displacement unit (6) extends along the periphery of the mounting unit (4) and thereby encloses the mounting unit (4).

3. Lukkemekanisme (30) ifølge krav 2, kendetegnet ved, at den mindst ene fleksible element (14, 16) er fastgjort til forskydningsenheden (6).Closing mechanism (30) according to claim 2, characterized in that the at least one flexible element (14, 16) is attached to the displacement unit (6).

4. Lukkemekanisme (30) ifølge et af de foregående krav, kendetegnet ved, at en yderligere kontaktenhed (20, 18), som er udformet til at overføre kraft fra den første kontaktenhed (12) hen imod monteringsenheden (4), er tilvejebragt mellem den første kontaktenhed (12) og monteringsenheden (4).Closing mechanism (30) according to one of the preceding claims, characterized in that an additional contact unit (20, 18) which is designed to transmit power from the first contact unit (12) towards the mounting unit (4) is provided between the first contact unit (12) and the mounting unit (4).

5. Lukkemekanisme (30) ifølge et af de foregående krav 1-4, kendetegnet ved, at den første kontaktenhed (12) er monteret på en første akselenhed (22).A closure mechanism (30) according to one of the preceding claims 1-4, characterized in that the first contact unit (12) is mounted on a first shaft unit (22).

6. Lukkemekanisme (30) ifølge krav 5, kendetegnet ved, at det drejelige element (8) er drejeligt monteret på forskydningsenheden (6) ved hjælp af mindst én anden akselenhed (10), som strækker sig parallelt med den mindst ene første akselenhed (22).The closure mechanism (30) according to claim 5, characterized in that the rotatable element (8) is rotatably mounted on the displacement unit (6) by at least one second shaft unit (10) extending parallel to the at least one first shaft unit ( 22).

7. Lukkemekanisme (30) ifølge et af de foregående krav, kendetegnet ved, at kontaktenheden (12) er anbragt på en sådan måde, at den forskydes maksimalt hen imod monteringsenhed (4), når det drejelige element (8) står vinkelret i forhold til monteringsenheden (4).Closing mechanism (30) according to one of the preceding claims, characterized in that the contact unit (12) is arranged in such a way that it is displaced maximum towards the mounting unit (4) when the rotatable element (8) is perpendicular to the relationship. to the mounting unit (4).

8. Lukkemekanisme (30) ifølge et af de foregående krav 4-7, kendetegnet ved, at lukkemekanismen (30) omfatter midler (60, 60) beregnet til at tvinge den yderligere kontaktenhed (20, 18) væk fra monteringsenheden (4).Closing mechanism (30) according to one of the preceding claims 4-7, characterized in that the closing mechanism (30) comprises means (60, 60) intended to force the additional contact unit (20, 18) away from the mounting unit (4).

9. Apparat (26) som omfatter et sæde (28) eller et pladeelement (66) og en lukkemekanisme (30) ifølge et af de foregående krav.Apparatus (26) comprising a seat (28) or a plate element (66) and a closing mechanism (30) according to one of the preceding claims.