EP3024356B1 - Locking system - Google Patents

Description

The present invention relates to a locking system, in particular a locking system for a desk with a cable channel.

From the prior art, various locking systems have become known, usually depending on the specific application.

From the DE 297 03 997 U1 is a releasable locking device for sliding desktops as known to remove. This locking device comprises two locking pins which can engage in openings of two parallel struts of the table frame. The locking pins are arranged at one end in each case on a rod. The other end of the rods is coupled to a single adjustment device which can be contracted or pushed apart in the longitudinal direction of the two rods.

The adjusting device is at the same time designed as a handle for moving the desk top.

From the DE 20 2006 016 372 U1 is a multifunction desk or a multifunction work table to take as known. This table has an adjustable table top. To fix a position occupied the table top relative to the support frame, a metal or plastic tongue is provided on a longitudinal beam, which carries at its one free end a detent. This detent engages in a corresponding recess on the underside of the table top. It is therefore a usual RastEinrichtung.

The object of the present invention is to provide an improved locking system, in particular for increasing the safety of furniture having sliding table tops. The present invention is based on the object to provide a locking system that increases the operating safety of a desk with a sliding table top and a cable channel without affecting the operability.

The present invention provides a locking system having a locking body and a locking device. The locking body is movable from the second position to a third position with a first linear movement from a first position to a second position and with a second linear movement in a direction of movement that is identical to the first linear movement. In a locked state holds the locking device the locking body in the first linear movement at the second position and locks the locking body at the third position. In other words, the locking body is linearly movable from a first position to a third position to a third position, wherein the locking body is stopped at the second position by the locking device and locked at the third position (after the second linear movement). In this way, a secure, two-stage movement of the locking body is ensured. When the locking device is in a non-locking state, the locking body is freely movable with a third linear movement in a direction of movement opposite to the first linear movement from the third position to the first position. The locking device can be displaced from the arresting state into the non-arresting state by means of a traction device which can be actuated by a hand movement, preferably in the form of a Bowden cable. In this way, a simple operability of the locking device is ensured.

The locking system can be designed so that the locking body moves during the second linear movement from the second position to the third position at least 1 cm and not more than 10 cm, preferably not more than 3 cm.

In a preferred embodiment of the invention, it is provided that the arresting body is freely movable in a direction of movement which is the same for the third linear movement, from a fourth position lying between the third and the second position, to the first position, when the locking device is in the locking state.

The locking system may be formed so that the locking body has two opposing recesses and the locking device has two rotatably mounted parts, which parts act in the locked state respectively against a stop surface of the recesses to prevent movement of the locking body in the direction of the third position when the Locking body is in the second position. In this case, the locking system may be formed so that the recesses are open relative to the respective abutment surface, so that the rotatably mounted parts do not hinder movement of the locking body from the third position to the first position, even if the rotatably mounted parts protrude into the recesses.

Further, the locking device may comprise a slidably mounted part which is movable between a locking position and a non-locking position, and the slidably mounted part causes a rotation of the rotatably mounted parts of the recesses on a movement from the locking position to the non-locking position when the locking body is in the second position. In this case, the locking system may be formed so that the locking device has return springs, which bring about a return of the rotatably mounted parts in the locked state when the slidably mounted part is in the arresting position. Alternatively or additionally, the locking system may be formed so that the locking body has two opposite recesses has, the locking device comprises two opposing locking body, the slidably mounted part has two at least partially inclined contact surfaces, and the contact surfaces cause a movement of the locking body to each other when the slidably mounted part is moved from the non-locking position to the arresting position, so the contact surfaces lockingly engage in the respective recesses of the locking body when the locking body is in the third position and the slidingly mounted part is in the arresting position. Alternatively or additionally, the locking system can be designed so that the slidingly mounted part is movable by a movement of a Bowden cable caused by hand movement of the locking position in the non-locking position.

Furthermore, the present invention provides a desk having a sliding table top, a cable duct and a locking system as described above, wherein the locking system is mounted with the table top and the cable channel such that the cable duct is not in the first position of the table top is covered, the cable channel in the second position of the table top is only partially covered, and the cable channel is covered in the third position of the table top. The desk may include a handle and a Bowden cable to actuate the locking device over the handle.

Figur 1:

eine schematische Draufsicht auf ein Arretiersystem, bei dem sich der Arretierkörper in einer Freigabe-Position (der sogenannten ersten Position) befindet;

Figur 2:

eine schematische perspektive Darstellung des Arretierkörpers der Figur 1;

Figur 3:

eine schematische Draufsicht auf das Arretiersystem gemäß Figur 1, bei dem sich der Arretierkörper in einer Zwischen-Position (zweiten Position) vor Erreichen der endgültigen Verriegelungsposition befindet;

Figur 4:

eine schematische Draufsicht auf das Arretiersystem gemäß Figur 3, zu einem Zustand, bei welchem ein zur Arretiervorrichtung gehörender Verriegelungsschieber in seine entriegelte Position gebracht ist;

Figur 4A:

eine ähnliche Darstellung zu den Figuren 1 und 3, in denen sich der Arretierkörper bereits in der Verriegelungsposition befindet, die Verriegelung aber noch nicht durchgeführt wurde;

Figur 4B:

eine ähnliche Darstellung zu Figur 4A, und zwar in einer Zwischen-Position während der Überführung des Verriegelungsschiebers von der Entriegelungs- in die Verriegelungsposition;

Figur 5:

eine schematische Draufsicht auf das Arretiersystem gemäß Figur 1, in welchem sich der Arretierkörper in seiner endgültigen Verriegelungsposition befindet;

Figur 6:

eine Draufsicht auf das Arretiersystem ähnlich zu Figur 4 während des Entriegelungsvorganges;

Figur 7:

eine schematische perspektive Darstellung eines Schreibtisches mit einem Kabelkanal und einem Arretiersystem;

Figur 8A:

eine schematische perspektive Darstellung eines mit einem Bowdenzug verbundenen Handgriffes; und

Figur 8B:

eine weitere schematische perspektive Darstellung eines mit einem Bowdenzug verbundenen Handgriffes.

The preceding invention will be explained in more detail with reference to drawings. The individual drawings show:

FIG. 1:

a schematic plan view of a locking system, in which the locking body is in a release position (the so-called first position);

FIG. 2:

a schematic perspective view of the locking body of FIG. 1 ;

FIG. 3:

a schematic plan view of the locking system according to FIG. 1 in which the locking body is in an intermediate position (second position) before reaching the final locking position;

FIG. 4:

a schematic plan view of the locking system according to FIG. 3 to a state in which a locking slide belonging to the locking device is brought to its unlocked position;

FIG. 4A

a similar representation to the FIGS. 1 and 3 in which the locking body is already in the locking position, but the lock has not yet been carried out;

FIG. 4B:

a similar representation too FIG. 4A in an intermediate position during the transfer of the locking slide from the unlocking to the locking position;

FIG. 5:

a schematic plan view of the locking system according to FIG. 1 in which the locking body is in its final locked position;

FIG. 6:

a plan view of the locking system similar to FIG. 4 during the unlocking process;

FIG. 7:

a schematic perspective view of a desk with a cable channel and a locking system;

FIG. 8A:

a schematic perspective view of a connected to a Bowden handle; and

FIG. 8B:

a further schematic perspective view of a connected to a Bowden handle.

FIG. 1 shows an embodiment of a locking system 100 as described above with a locking body 110 and a locking device 120. The described elements of the locking system 100 can be made of plastic or metal.

It is in FIG. 1 a bottom view of a table top 210 shown, with a cross-beam 220, which extends from the left to the right leg frame 242 and, where appropriate, at the same time can be used as from the top equippable cable channel 220. This is approximately out FIG. 6 to see in bottom view.

For this purpose, the locking device 120 comprises a preferably, for example, on the crossbeam 220 (transverse spar 220). attached and thus fixed locking body 110 which cooperates with the aforementioned locking device 120. The locking device 120 may preferably be attached to the underside of a table top 210. If the table top 210 is moved transversely to the traverse 220 forward or backward (by means of a corresponding displacement device, over which the table top is slidably guided relative to the pedestal), the table top can be adjusted so far that, for example, the cable channel is exposed from above. Usually, such a, not shown in detail in the drawings cable channel runs on a opposite to a seat longitudinal edge of the table on the underside of the table top, so that the cable channel is not visible from above. The table top is thus at least so far displaced that the cable channel is exposed from above. After laying the cable then the table top can be moved back to its position of use, in which case the locking device 120 runs in the manner described below on the locking body 110. In this case, a successive adjustment is implemented, which requires certain steps to carry out in order to possibly prevent the pinching of fingers on a particular rear-mounted cable channel.

For this purpose, as shown, the locking device 120 is provided with a plan view in plan view at least approximately rectangular locking housing 111, with a corresponding opening 117, in which ultimately the locking body 110 is inserted into the locking device 120. In the illustration according to FIG. 1 this is the locking housing and the locking mechanism therein Covering lid has been omitted to illustrate the structure.

In FIG. 1 In this case, the locking body 110 is in a first position, which is also referred to below as the initial or release position, and which can be defined relative to the locking device 120. For example, the first position may designate an arrangement of the detent body 110 relative to the detent 120, in which arrangement the detent body 110 is located substantially outside the peripheral periphery of the detent 120.

In the illustrated embodiment, the locking body 110 has two opposing recesses 112, each having a stop surface 113, two opposite recesses 114 and a rounded leading end 115 on ( FIG. 2 ). The stop surfaces 113 and the recesses 114 contribute in a manner explained in more detail below to restrict the freedom of movement of the locking body 110 relative to the locking device 120. As in FIG. 1 illustrated, the locking body 110 may be formed substantially mirror-symmetrical to its plane of symmetry E, wherein the two recesses 112 face each other mirror-symmetrically and the two recesses 114 mirror-symmetrically to the plane of symmetry E ( FIG. 3 ) are opposite.

The illustrated locking device 120 has a slidably mounted member 126 which is movable between a locking position and a non-locking position. In FIG. 1 is that slidably mounted member 126 in the arresting position.

Springs 129 exert a force on the slidably mounted member 126 which returns the slidably mounted member 126, which will be hereinafter also referred to as a lock slider 126, to the locking position when no counteracting forces act on the slidably mounted member 126. Such a counter force can be exerted by a Bowden cable 130 fastened to the sliding element 126. FIG. 1 11 shows an exemplary Bowden cable 130 having a pull cable 131, a cable guide 132, and an end piece 133 that transmits a tensile force exerted on the pull cable 131 to the slidably mounted member 126.

In the illustrated embodiment, the locking device 120 has two elements 122 rotatably mounted on axes of rotation 123, which are also referred to below as blocking levers 122, which can be rotated between a locking position and a non-locking position. These blocking levers are at least approximately designed as a double-armed lever. The opening 117 of the locking device 120 facing blocking arm 122a of the respective locking lever 122 is biased by a spring means 121, in such a way that the mentioned blocking arm 122a is moved to the locking device 120 perpendicular longitudinally passing through the symmetry plane E and biased in this direction. In FIG. 1 So are the rotatably mounted elements 122 each in their arresting position. Return springs 121 in this case exert a restoring force, which rotate the rotatably mounted elements 122 in the idle state in the said locking position, for example, when the slidably mounted member 126 is in the locking position.

The rotatably mounted elements 122, so the two blocking levers 122, in addition to their respective one blocking arm 122a mentioned above at least approximately opposite to the pivot axis wings 127, which is hereinafter also partially referred to as Blockierverstellarm 122b. This wing 127 or blocking adjustment arm 122b cooperates with arms 128 of the locking slide 126 in a manner explained in more detail below in order to rotate the blocking levers 122 from the arresting position to a non-locking position against the force of the mentioned return springs 121.

As in FIG. 1 illustrated, the locking device 120 may be formed substantially mirror-symmetrically about its longitudinal axis, wherein the two rotatably mounted elements 122, so the blocking lever 122, are mirror-symmetrically opposed.

FIG. 2 shows a schematic perspective view of the locking body 110 according to FIG. 1 ,

FIG. 2 shows again the above-described recesses 112, stop surface 113, recesses 114 and a rounded leading end 115. In particular, the FIG. 2 the design of the recesses 112 open to at least two sides.

Further shows FIG. 2 a bracket 116 belonging to the locking body 110, which can be used in a manner explained in more detail below to fasten the locking body 110 to another element, for example to a cable duct. The locking body 110 may be secured to another member in another manner known to those skilled in the art. In this respect, the bracket represents an optional element of the locking body 110.

FIG. 3 shows a schematic plan view of the locking system of FIG. 1 in which the locking body is in a first stop position.

FIG. 4 shows a schematic plan view of the locking system of FIG. 1 in which the locking body is in an intermediate position before reaching the final locking position.

The movement of the locking body 110 from the first position shown in FIG. 1, the so-called release position, to that in FIG FIG. 5 shown third position, the so-called locking position on the in the FIG. 3 shown intermediate stop position, is essentially a linear movement. In a movement of the locking body 110 relative to the locking device 120 from the release position linearly toward the locking position of the locking body 110 is stopped at the second position, ie the intermediate stop position of the locking device 120 when the locking device 120 in a locking State is. The FIGS. 1 and 3 show the locking device 120 in the locked state.

In the illustrated embodiment, the locking device 120 is in a locked state when at least one of the rotatably mounted elements 122 is in the arresting position. In the illustrated embodiment, the slidably mounted member 126 is also in the arresting position when the rotatably mounted elements 122 are in the arresting position.

In the locking state, the rotatably mounted elements 122 protrude into the path of movement of the locking body 110, i. in a recess of the locking device 120 provided for receiving the arresting body 110 such that the rotatably mounted elements 122 abut against the abutment surfaces 113 of the arresting body 110 linearly in the direction of the locking position during a movement of the arresting body 110 relative to the arresting device 120; when the locking body 110 is in the intermediate stop position. As a result, the locking body 110 is stopped in its movement relative to the locking device 120 from the release position linearly in the direction of the locking position at the intermediate stop position.

As in FIG. 2 is shown, the recesses 112 may be designed so that slipping of the blocking lever 122 is prevented from the abutment surfaces 113 and out of the recesses 112 in a direction approximately perpendicular to the plane of rotation of the rotatably mounted elements 122. For example, the recesses 112 may have side walls that counteract such slipping.

The locking body 110 and the locking device 120 can be designed so that movement of the locking body 110 relative to the locking device 120 from the second position, ie the intermediate stop position in the direction of the release position by interaction of the locking device 120 with the locking body 110 is not prevented even if the rotatably mounted elements 122 are in the arresting position. As in FIG. 2 shown, the recesses 112 may be open on at least two sides, in particular on an abutment surface 113 opposite side. Thus, the rotatably mounted elements 122 can move freely out of the recesses 112 when the locking body 110 is moved relative to the locking device 120 from the intermediate stop position toward the release position, even if the rotatably mounted elements 122 in the arresting position Thus, for example, even if the rotatably mounted elements 122 protrude into the recesses 112.

If the locking body 110 stopped in the intermediate stop position is to be moved in the direction of the locking position, the rotatably mounted elements 122 can be swung out of the recesses 112 by rotation of the rotatable elements 122 from the locking position into a non-locking position so that the locking body 110 can be moved freely from the intermediate stop position in the direction of the locking position. As shown FIG. 3 the two blocking levers 122 are pivoted in opposite directions to each other, wherein the in FIG. 3 overhead blocking lever 122 in a clockwise direction and the lower lock lever 122 is pivoted counterclockwise. As a result, the blocking arms 122a swing out of the corresponding stop in the locking body 110 until they reach the in FIG. 4 take shown position in which then the locking device 120 and the locking body 110 can be further moved into each other.

To effect this, the displaceably mounted element 126, that is the so-called locking slide, opposite to its Bowden cable 130, that is opposite to the Arretiergehäuseende 111 a, provided with two inwardly projecting release arms 128. As can be seen from the drawings, the locking slide 126 is designed plate-shaped from the basic structure and has a plan view in at least approximately U-shaped basic structure, with outwardly extending in the adjustment direction legs 126a, then in each case inwardly toward each other to projecting release arms 128th connect.

In this case, the basic shape of the locking slide 126 is such that between the trigger arms 128 and the trigger arms 128 supporting legs 126a of the locking slide 126, a recess 126b is formed, into which, in the previously described locking position of the blocking lever 122, the blocking adjustment 122b engages.

In order now to merge the locking body 110 in relation to the locking device 120 with this, so the locking slide 126 of the in FIG. 1 and FIG. 3 shown starting position in the in figure 4 reproduced intermediate position in the direction to the right in Fiugur 4 locking housing end 111a to be moved. The aforementioned trigger arms 128 run on the outwardly directed side of the blocking adjustment arms 122b (which are also referred to as wings 127) and thus force the described pivoting of the blocking lever 122, namely the in FIG. 4 overhead blocking lever in a clockwise direction and lying below the plane of symmetry E blocking lever 122 in a clockwise direction. Thus, the first explained locking position with respect to the locking body 110 is released.

FIG. 4 shows the rotatably mounted elements 122, so the blocking lever 122 in its non-locking position. The locking slide 126 is in its in FIG. 4 right unlocked position shown.

A displacement of the locking slide 126 from the locking position to a non-locking position can be effected by applying a counterforce as described above to the sliding element 126 against the spring force of the springs 129, which counterforce, for example, according to the embodiment shown in FIGS a Bowden cable 130 can be applied. In the Figures 3 and 4 would correspond to a displacement of the slidably mounted element 126 from the locking position to a non-locking position of a shift to the right in the plane of the drawing.

The locking system may be such that actuation of the Bowden cable 130 by hand - for example, a longitudinal movement of the pull cable 131 of the Bowden cable 130 of less than 6 cm or even less than 3 cm - sufficient to lock the locking device from the locked state into a non arresting state - for example, by a described above displacement of the sliding element 126 from the locking position to a non-locking position (this can be achieved by actuation of a based on Figures 8A and 8B subsequently shown and described handle 230 done).

In the illustrated embodiment, the locking device 120 on two opposite locking body 124, which the locking body 110 as shown in the FIG. 4 in the third position relative to the locking device 120 lock when the locking device 120 is in the locked state. In the illustrated embodiment, the slidably mounted member 126 has opposing contact surfaces 125 which urge the locking bodies 124 toward one another when the slidably mounted member 126 is in the locked state and which allow the locking members 124 to move apart as the slidably mounted member 126 engages a non-locking state.

In order to move the locking body 110 from the intermediate stop position to the locking position relative to the locking device 120, first the locking device 120 must be brought into a non-locking state, which according to the illustrated embodiment is accomplished in that the slidingly mounted element 126 is moved by a pulling force on the Bowden cable 130 from the locking position to a non-locking position, whereby the rotatably mounted elements 122 pivot out of the recesses 112 and the locking body 110 is no longer rotatably supported by the Elements 122 is prevented from moving from the intermediate stop position to the locking position relative to the locking device 120.

Already at this point it is mentioned that a Bowden cable 130 is not necessarily necessary. Even a simple cable or a pull rod etc. would basically suffice.

If the slidingly mounted element 126 is in a non-arresting state, then the rounded leading end 115 of the locking body 110 causes the disk-shaped locking bodies 124 in the illustrated embodiment to move apart from the plane of symmetry E as shown in the arrowed illustration 124 'when the locking body 110 moves away from the intermediate stop Position is moved to the locking position relative to the locking device 120. The locking body 124 can be displaced outward only in the opposite direction transverse to the longitudinal plane of symmetry E of the locking body 110, because by the adjustment of the locking device 120 against the force of the spring means 129 (by tightening the Bowden cable 130) to the right (ie in extension of the locking body 110th like this in FIG. 4 is shown), a clearance for the disc-shaped locking body 124 created becomes. In the locked state, these locking body 124 by the contact surfaces or edges 125 in the U-like inner central recess 126 'of the locking slide in the in FIG. 1 shown forced position in which they engage in the corresponding lateral recesses or depressions 114 of the locking body 110 and hold the locking body 110 finally and firmly in its locked position.

In other words, therefore, the inner central recess 126 'in the locking slide 126 is designed so that it in the direction of the male locking body 110 (thus directed away from the Bowden cable) increasingly further outwardly diverging contact edges 125, whereby the mentioned greater clearance for the locking body 124th is created so that the relative insertion of the locking body 110 in the respective recess 260 in the locking device 120 by the rounded leading end 115 on the locking body 110, the locking elements 124 are initially moved in opposite directions from the plane of symmetry E corresponding to the arrow 124 'outward. Thereby, the way for the locking body 110 is free to push the locking body into its final locking position in the locking device 120 or vice versa postpone the locking device 120 at a fixed locking body 110 until reaching an end position. During the subsequent easing of the Bowden cable can be moved back into its initial or locking position by the aforementioned restoring forces of the springs 129, the locking slide 126.

As a result of this pivoting back of the locking slide 126, the abovementioned contact edges 125 then run on the outer sides of the disk-shaped locking bodies 124 which are remote from one another in the exemplary embodiment shown, and move them counter to the arrow illustration 124 'in FIG FIG. 4 towards each other, ie in the direction of the common plane of symmetry E until they reach their final locking position, in which they engage in the lateral recesses 114 in the locking body 110 and thereby block and lock it. This adjustment is based on the output Figure 4A about the position in FIG. 4B until the final locking position according to FIG. 5 played.

In other words, therefore, the plate-shaped or plate-like locking device has a recess on the inside, essentially an at least approximately U- or V-shaped inner recess 126 ', which initially has straight and then outwardly diverging edges from the Bowden cable 120 in the direction of locking body 110 a more space-leaving contact surface or contact edge 125 is formed. As a result of the space thus provided, the disk-shaped locking bodies 144 can migrate outward in the exemplary embodiment shown. In other words, therefore, the locking body 110 and the locking device 120 are designed so that the disc-shaped locking body 124 are adjacent to one of the two recesses 114, when the locking body 110 is moved relative to the locking device 120 in its locking position.

Conversely, it is sufficient to release the locking device that over the Bowden cable briefly the locking slide 126 is moved to its right stop position in which the locking mechanism is released. In this position, the locking body 124 (ie, the disk-shaped in the embodiment shown locking body 124) at a movement of the locking body 110 located in the locking position again from the wells 114 as indicated by arrows 124 'in FIG. 4 Be moved out when the locking body 124 is displaced relative to the locking device 120, that is moved back to the left in the figures shown. Because in the unlocked state, the locking body 124 are no longer pushed by the locking slide 126 from the contact surfaces or contact edges 125 in the recesses 114 in the locking body 110. The locking body 110 can then from the locking position (so-called third position) first on the in FIG. 4 shown position continuously and unhindered further out of the channel-shaped receiving opening 260 in the locking device 120 are moved (or at fixed locking body 110 of the locking housing 111, so the locking device 120 are relatively moved away from the locking body 110). In this case, the blocking levers 122 can not block further movement of the arresting body 110 into the release and starting position in relation to the arresting device 120, since the blocking arms 122a only rest on the side cheeks of the arresting body 110 and can not hinder an outward movement (FIG. FIG. 6 ).

FIG. 7 shows a schematic perspective view of a desk 200 with a cable channel 220 and a locking system 100 as described above.

In the exemplary embodiment shown, the desk 200 has a table top 210, a cable channel 220, a handle 230, a frame 240 equipped with feet 242, slides 250, a locking system 100 as described above, and a locking system 100 connecting the handle 230 to the Bowden cable 130.

The frame 240 with the foot parts 242 ensures a secure stand of the desk 200, in particular the table top 210. At least a part of the table top 210 is movably mounted by means of the slide rails 250 with respect to the cable channel 220 and the frame 240, so that a movement of at least one part the table top 210 in a direction transverse to the length of the cable channel 220 is basically possible. The locking system 100 provides by its operation described above, a releasable connection between the table top 210 and the cable channel 220, which limits the mobility of the table top 210 relative to the cable channel 220 and thus relative to the frame 240. The bracket 116 of the locking body 110 of the locking system 100 engages wholly or partially around the cable channel 220 to secure the locking body 110 to the cable channel 220. The locking device 120 of the locking system 100 is attached to a cable channel 220 facing side of the table top 210.

The illustrated desk 200 can be operated in the following manner. In FIG. 6 By a manual operation of the handle 230, a tensile force is exerted on a guided through a cable guide 132 pull cable 131 of the Bowden cable 130, which pulling the sliding element 126 of the locking device 120 in a non-locking state, so that the locking body 110 can be moved freely in the first position relative to the locking device 120, wherein the table top 210 moves perpendicular to the longitudinal axis of the cable channel 220, to a arranged on the table top 210 side opening of the cable channel 220 is no longer covered by the table top 210. Cables and the like can be easily inserted into the cable channel 220, releasing the handle 230 and returning the slidable member 126 to the locked state due to the spring force of the spring 129.

In practice, the locking body 110 is preferably fixedly attached to the table, for example to the mentioned transverse beam 220, in the space above the transverse spar 220 and below the table top 210. The cooperating locking device 120 is moved with the table top and is attached thereto , By operating the pulling device via the hand lever, the locking slide can then be actuated in order to move from the pre-locking position to the final locking position, or to release the lock as a whole.

If the table top 210 is now pushed back in the direction of its position covering the opening of the cable channel 220, the table top 210 is stopped by the locking system 100 a few centimeters before its end position, namely when the locking body 110 fixed to the cable channel, the second position relative to the table top 210 attached locking device 120 achieved. As a result, the opening of the cable channel 220 remains partially open. Only when the locking device 120 is set by a renewed manual operation of the handle 230 in a non-locking state, the table top 210 can return to its end position, in which fixed to the cable channel locking body 110 in the third position relative to the table top 210 fixed locking device 120 is located and the table top 210, the opening of the cable channel 220 completely covers.

Figure 8A shows a schematic perspective view of the connected to the Bowden 130 handle 230 according to FIG. 6 , wherein a tensile force is exerted on the guided through the cable guide 132 pull cable 131 of the Bowden cable 130.

FIG. 8B shows a further schematic perspective view of the connected to the Bowden 130 handle 230 according to FIG. 6 , about which a tensile force is exerted by the guided through the cable guide 132 pull cable 131 of the Bowden cable 130 on the locking slide 126 of the locking device 120.

The locking system has been explained with reference to disc-shaped locking bodies 124. The locking bodies but may also have any other shape. Disc-shaped locking body are advantageous, however, since a comparatively simple implementation of a forced movement between the locking and unlocking position is possible and the locking body 124 can turn up without this leading to jamming.

It should also be noted that the aforementioned locking body 110 is formed from the basic structure in plan view bolt-shaped or bolt-like with a much greater longitudinal extent compared with its transverse extent. But even this design is not mandatory.

Finally, it is also noted that the locking device can be extremely flat and therefore easily mounted in a distance space between a cable channel and a table top underside. It does not take up much space and is extremely easy and safe to use. All parts can be made of plastic. It can be transferred to other traction means, for example, on a pull rod, etc. As mentioned, a Bowden cable must not be used.

Claims (13)

1. Locking system (100) comprising:

   - a locking body (110) and

   - a locking device (120),

   characterised by the following additional features:

   - the locking body (110) is movable, relative to the locking device (120), from its released position via an intermediate resting position to a final latched position,

   - the locking device (120) and the locking body (110) are designed such that, when the locking body (110) runs onto the locking device (120), a stop mechanism is provided, which prevents the locking body (110) moving further relative to the locking device (120) in a manner limited by a stop,

   - a latching slide (126) is provided, which can be adjusted between an unlatched position and a latched position, the locking body (110) being movable relative to the locking device (120) until it reaches a final latched position when the latching slide (126) is brought into its unlatched position counter to the force of a spring mechanism (129), and

   - the latching slide (126) is designed such that the locking body (110) can only be moved relative to the locking device (120) into the final latched position or back out of the final latched position when the latching slide (126) is in its unlatched position.
2. Locking system according to claim 1, characterised in that the locking device (120) comprises a duct-like receiving opening (260) that extends preferably along a vertical plane of symmetry (E), is open at one end and closed at the other, and in which the locking body (110) engages and/or comes to rest in the latched position.
3. Locking system according to either claim 1 or claim 2, characterised in that the latching slide (126) comprises two side legs (126a), to the ends of which inwardly protruding trigger arms (128) are attached, by means of which the stop mechanism can be activated.
4. Locking system according to any of the preceding claims, characterised in that

   - the locking body (110) comprises two opposing recesses (112), and

   - the locking device (120) comprises two blocking levers (122) which, in the locked state, each act on a stop surface (113) of the recesses (112) in order to prevent the locking body (110) moving towards the latched position when the locking body (110) is in the intermediate resting position.
5. Locking system according to claim 4, characterised in that the recesses (112) are open towards the corresponding stop surface, as a result of which the locking body (110) is freely movable, relative to the locking device (120), from its latched position to its released position.
6. Locking system according to any of the preceding claims, characterised in that, by actuating the latching slide (126), the at least one blocking lever (122) provided and the preferably at least two blocking levers provided can be pivoted from their locking position into a release position that allows the locking body (110) to continue moving.
7. Locking system according to claim 6, characterised in that the locking device (120) comprises return springs (121) that cause the blocking levers (122) to return to the locking state when the slidably mounted element (126) is in the locking position.
8. Locking system according to either claim 6 or claim 7, characterised in that

   - the locking body (110) comprises two opposing indentations (114),

   - the locking device (120) comprises two opposing latching bodies (124),

   - the latching slide (126) comprises two contact surfaces (125) that are oblique to one another and define a central recess (126') in the latching slide (126), which recess is at least approximately U-shaped in plan view, and

   - the contact surfaces (125) cause the latching bodies (124) to move relative to one another when the slidable latching slide (126) is moved from the non-locking position to the locking position, such that a portion of the peripheral surfaces of each latching body (124) engages in the corresponding indentation (114) in the locking body (110) when the locking body (110) is in the latched position and the latching slide (126) is in its locking position.
9. Locking system according to any of claims 6 to 8, characterised in that the latching slide (126) is movable from the locking position into the non-locking position by means of a Bowden cable (130).
10. Locking system according to any of claims 1 to 9, characterised in that, during its second relative movement travel from its first locking position to its final latched position, the locking body (110) moves by more than 1 cm and by less than 10 cm, preferably by more than 2 cm and in particular more than 3 cm and preferably less than 6 cm, 5 cm or 4 cm.
11. Locking system according to any of claims 1 to 10, characterised in that the at least one latching body (124) and the preferably at least two latching bodies is/are discoid in plan view, and the at least one indentation (114) or the preferably at least two indentations formed in the opposing sides of the locking body (110) is/are adapted to the peripheral surface of the latching body (124).
12. Desk (200) comprising:

    - a slidably mounted table panel (210),

    - a cable duct (220) and

    - a locking system (100)

    according to any of the preceding claims, characterised in that

    - the locking system (120) is mounted together with the table panel (210) and the cable duct (220) in such a way that

    - the cable duct (220) is not covered by the table panel (210) in the released position,

    - the cable duct (220) is only partially covered by the table panel (210) in the intermediate resting position, and

    - the cable duct (220) is covered by the table panel (210) in the latched position.
13. Desk (220) according to claim 12, comprising

    - a handle (230) and

    - a Bowden cable (130) that connects the handle (230) to the latching slide (126).

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