EP2446775B1 - Connection assembly for assembling items of furniture without tools - Google Patents

Description

The invention relates to a connection arrangement for tool-free assembly of furniture parts, in particular for connecting a support with a plate, such as a table leg with a table top for assembling a table or a chaining of several tables or table elements.

A connection assembly for tool-less mounting an upper end of a table leg with a bottom of a table top is made of DE 40 16 486 A1 known. The table leg has on an upper side parallel to a longitudinal axis of the table leg projecting mounting pins, which have in an upper region a circumferential recess and in receiving seats of holding elements, which are arranged on an underside of the table top, insertable and can be clamped by a clamping mechanism with these. The clamping takes place via a clamping plate, which is held rotatably on the holding element and has at least one passage with a keyhole-shaped cross section, wherein a first region of the implementation corresponds approximately to an outer diameter of the fastening pin and a second region approximately to an outer diameter of the circumferential recess of the fastening pin. During assembly, the mounting pins of the table leg are inserted through the passages of the clamping plate in the receiving seats of the support member until the top of the table leg rests against the support member. By turning the clamping plate, which has a chamfer in a region around the passage, the clamping plate engages in the recess of the A fastening pin, pulls it over the chamfer in the direction of the table top and locks it in the holding element. This connection arrangement has the disadvantage that for bracing the table leg with the table top, a great effort and a rotational movement are necessary.

From the DE 20 2008 006 009 U1 is a further connection arrangement for tool-less mounting a table leg on a table top known, wherein a clamping plate via a toggle lever which is rotatably mounted about a parallel to the table top axis rotatably mounted on a base body, on this linearly displaceable. Such a toggle actuation has in particular the disadvantages of a larger footprint and an increased risk of injury by pinching during the clamping process. In addition, a toggle mechanism is usually complex, so that a large number of components must be manufactured and assembled.

A connection arrangement according to the preamble of claim 1 is known from ES 2 114 353 A1 known.

The object of the present invention is to provide a connection assembly for tool-less mounting a support with a plate, which does not have the disadvantages mentioned above and ensures a simple, stable and secure installation of furniture parts such as table legs.

This object is achieved by a connection arrangement for tool-free installation of furniture parts according to claim 1.

In a preferred embodiment according to claim 2, either the cocking slide or the clamping lever on a guide recess and the other part, the clamping lever or cocking slide on a guide pin. In a composite state of Clamping device, the guide pin extends perpendicularly through the guide recess. The guide pin is arranged in the guide recess in such a way that the guide pin can be brought into contact with a first edge side of the guide recess by pivoting the clamping lever in a locking direction in a locking angle region, so that a force can be transmitted from the clamping lever to the cocking slide via this contact point. by which the cocking slide is linearly displaceable in the locking position. By pivoting the clamping lever in a release direction of the guide pin in an opening angle range with a second edge side of the guide recess can be brought into contact, so that a force from the clamping lever on the cocking slide is transferable by the cocking slide is linearly displaceable in a release position.

In a further embodiment of the invention, the clamping lever on an actuating lever which extends radially to the axis of rotation of the clamping lever.

The clamping lever preferably has a protruding in the radial direction extension, z. Example, an actuating lever, which is pivotable against the first and the second stop and thus prevents further pivoting of the clamping lever in the respective direction.

More preferably, it is provided that the Verschließwinkelbereich adjacent to both the first and the second stop.

In an advantageous embodiment, the clamping device has a return spring, via which the clamping lever can be pivoted from a position between the second stop and the neutral position into the neutral position. The spring strength is chosen so that the clamping lever is not set back to the neutral position, without the cocking slide is moved by the spring force already in the release direction.

It is preferably provided that the first edge side of the guide recess has teeth or a serrated, wave or cam-shaped profile.

Preferably, a fastening pin in the receiving passage, in particular independent of the position of the cocking slide, in the release position and the locking position positively receivable.

It is preferably provided that the recess of the fastening pin is formed as a circumferential groove.

In a preferred embodiment, the first furniture part is a support or a plate, wherein the receiving group is attached to a plate or a support and the second furniture part is a plate or a support. Preferably, the support has an oval cross-section.

It can be provided that the support is a table leg and the plate is a table top.

In a preferred embodiment, the first furniture part has two mounting pins and the second furniture part two receiving ducts for receiving the mounting pins, wherein a distance between two adjacent receiving ducts a receiving assembly is at least twice as large as the distance of a receiving passage to an adjacent Möbelteil- or plate edge. Thus, two adjacent plates with two adjacent receiving assemblies can be connected to each other via a common support, which has two mounting pins.

• Fig. 1 eine auseinandergezogene Perspektivansicht einer Aufnahmebaugruppe mit Spanneinrichtung schräg von oben zeigt,
• Fig. 2 die Aufnahmebaugruppe wie in Fig. 1 in zusammengesetztem Zustand zeigt,
• Fig. 3 eine Perspektivansicht der Aufnahmebaugruppe mit Spanneinrichtung und einer Stütze mit zwei Befestigungszapfen im unmontierten Zustand zeigt,
• Fig. 4 die Komponenten aus Fig. 3 im montierten Zustand zeigt,
• Fig. 5 eine Draufsicht von unten auf eine erfindungsgemäße Aufnahmebaugruppe mit Spanneinrichtung zeigt,
• Fig. 6a-c eine Draufsicht von oben auf eine Aufnahmebaugruppe der erfindungsgemäßen Verbindungsanordnung in einer Freigabestellung (Fig.6a), einer Arretierstellung unmittelbar nach dem Arretiervorgang (Fig.6b) und einer Arretierstellung, nachdem der Spannhebel von der Rückstellfeder zurückgestellt wurde, (Fig. 6c) zeigt,
• Fig. 7 eine Perspektivansicht auf einen Tisch, wobei die Tischbeine mit einer erfindungsgemäßen Verbindungsanordnung an die Tischplatte montiert sind, zeigt,
• Fig. 8a-b eine Perspektivansicht einer Verbindungsmöglichkeit einer Stütze mit zwei Befestigungszapfen an zwei Aufnahmen zeigt,
• Fig. 9a-b eine Draufsicht von oben auf einen mit einem Spannschieber zusammenwirkenden Spannhebel in einer Freigabestellung (Fig. 9a) und einer Arretierstellung (Fig. 9b) zeigt, und
• Fig. 10a-b eine Draufsicht von unten auf einen mit einem Spannschieber zusammenwirkenden Spannhebel in einer Freigabestellung (Fig. 10a) sowie einer Arretierstellung (Fig. 10b) zeigt.

The invention will be explained with reference to an embodiment, reference being made to a drawing in which

• Fig. 1 shows an exploded perspective view of a receiving assembly with clamping device obliquely from above,
• Fig. 2 the recording assembly as in Fig. 1 in assembled state shows
• Fig. 3 shows a perspective view of the receiving assembly with clamping device and a support with two mounting pins in the unmounted state,
• Fig. 4 the components off Fig. 3 when assembled shows
• Fig. 5 shows a plan view from below of a receiving assembly according to the invention with clamping device,
• Fig. 6a-c a top view of a receiving assembly of the connecting arrangement according to the invention in a release position ( 6a ), a locking position immediately after the locking operation ( Figure 6b ) and a locking position, after the tensioning lever has been reset by the return spring, ( Fig. 6c ) shows,
• Fig. 7 a perspective view of a table, wherein the table legs are mounted with a connection arrangement according to the invention to the table top, shows
• Fig. 8a-b shows a perspective view of a connection possibility of a support with two mounting pins on two receptacles,
• Fig. 9a-b a top view of a cooperating with a cocking lever clamping lever in a release position ( Fig. 9a ) and a locking position ( Fig. 9b ), and
• Fig. 10a-b a top view from below of a cooperating with a cocking cocking lever in a release position ( Fig. 10a ) and a locking position ( Fig. 10b ) shows.

First, let's up Fig. 1 to Fig. 4 be discussed in more detail. In the Fig. 1 has a housing 23, in which a clamping device 5 is held obliquely from above receiving assembly 2, on. The tensioning device 5 comprises a cocking slide 6 which is held displaceably in the housing 23 by longitudinal guides 5a (arrow 56) and can be actuated via a tensioning lever 8, which is rotatably supported on the housing 23 about a rotation axis 8a. The cocking slide is held by a first fastening screw 22a, which passes through a longitudinal slot 6a of the cocking slide 6, between the longitudinal guides 5a and the clamping lever 8 via a second fastening screw 22b on the housing 23. The cocking slide 6 has a guide recess 11 with a first edge side 11 a and a second edge side 11 b, through which in the assembled state, a guide pin 12 (see. Fig. 10a, 10b ), which is held at a lower side of the tensioning lever 8 spaced from the rotation axis 8a, extends parallel to the rotation axis 8a downwards. Furthermore, the cocking slide 6 has two Spanndurchfiihrungen 7 whose free cross-section in each case in a receiving portion 7a an outer dimension, such as an outer diameter of a male fastening pin 3 (Fig. Fig. 3 ) and is narrowed in an adjacent clamping section 7b.

The housing 23 has two receiving passages 2 a whose inside dimension or inside diameter corresponds to an external dimension or external diameter of a support 18 (cf. Fig. 3 ), so that a mounting pin 3 in a receiving bushing insertable and positive, preferably free of play, is receivable therein. A largely play-free in the transverse direction of the mounting pin 3 seat of the mounting pin 3 in the receiving passage 2a is thus ensured. In addition to a cylindrical design of the mounting pin 3 and Aumahmedurchführung 2a and a conical design is possible. As a result, a particularly advantageous positive and play-free connection between the mounting pins 3 and the Aumahmedriffführungen 2 a produced, so that a via the connection arrangement. 1 assembled furniture even in a not yet locked state of the connection assembly 1 has a secure state and the locking of the mounting pins 2 in the clamping device 5 primarily serves the purpose of preventing disengagement of the support 18 of the receiving assembly 2 in the direction of the longitudinal axis 2b. A secondary task of the tensioning device 5 may be to further draw the fastening pins during the locking process in the Aumahmedurchführung 2a and thus to clamp the support 18 with the receiving assembly 2. In this case, the clamping bushing 7 has a chamfer or wedge-shaped design suitable for this task in an edge region, in particular adjacent to the clamping section 7a, so that a wedge-shaped clamping region is formed for cooperation with an undercut recess of the fastening pin.

Fig. 3a illustrates a conical or frusto-conical embodiment of a fastening pin 3 with a conical (K) pin body 3a, an undercut groove 4 and a head 3b. In the housing 23 corresponding conical receiving ducts 2a are formed, and it is provided a stop, so that each fixing pin 2b can be inserted along its longitudinal axis 2b up to a certain position in the receiving passage in which a largely or completely play-free seat, the fastening pin but not can clamp in the conical receiving bushing and is easily solvable.

In an open position, the in Fig. 1 to Fig. 4 is shown, the non-narrowed receiving portions 7a of the individual Spanndurchfiihrungen over the corresponding receiving ducts 2a, so that the mounting pins 3 of the support 18 completely in the receiving ducts 2a and clamping bushings 7 (see. Fig. 4 ) can be introduced or re-executed. The tensioning device 5 has a restoring spring 16 which moves the tensioning lever 8 in a release direction 9b into a neutral position (FIG. Fig. 6c ) zurückstellt, in which the tensioning lever 8 undergoes a spring force opposing opposing force on the located in the locking position cocking slide 6.

As in Fig. 3 shown, the mounting pins 3 in an upper region a circumferential, annular recess or groove 4, wherein in the in Fig. 4 illustrated, assembled state of the cocking slide 6 is linearly displaceable in a locking position, so that the clamping portions 7b engage in the recesses 4 and thus fix the support 18 with the mounting pins 3 on the housing 23 of the receiving assembly 2 and prevent a release movement in the direction of the longitudinal axis 2b , The interaction of the mounting pins 3 with the mounting bushings 2a fixes the components 2, 18 of the connection arrangement otherwise, so that the support 18 is fixed to the receptacle assembly 2 positively and practically or completely free of play.

The operation of the clamping device is based on Fig. 5 and Fig. 6a-6c be explained in more detail. Fig. 5 shows a receiving assembly 2 from below in a release position (dashed line) and a locking position (solid line). In the release position ( Fig. 5 , dashed line and Fig. 6a ) is the guide pin 12 of the clamping lever 8 in a first position 12a in the guide recess 11. By actuating the operating lever 13 from a release axis 15a in the locking direction to the stop 14b, where the actuating lever is located on a locking axis 15b, the guide pin 12 of the first position 12a moves to the second position 12b. Here, the guide pin presses against a first edge side 11 a ', whereby the cocking slide is moved along the longitudinal guides 5a to the right.

Characterized in that the first edge side 11 a is not circular arc-shaped about the axis of rotation 8 a, but their distance from this continuously reduced, as in Fig. 10 seen counterclockwise about the axis of rotation 8a, the cocking slide in a first part of the pivoting movement of the clamping lever is initially relatively far and then relatively little moved in a second part of the pivoting movement relative to the respective pivot angle of the clamping lever, so that in the second part of the movement Reduction or strengthening effect of the force exerted on the clamping lever clamping force is achieved.

The position at the end of the closing process is in Fig. 6b shown in plan view. After releasing the actuating lever of the clamping lever is so far returned by the tension spring in the release direction until the operating lever 13 is located on a center line 15c along a longitudinal or movement axis of the cocking slide 6 and the guide pin 12 has reached the position 12c. During this process, the cocking slide 6 does not change its position and remains in the locked position.

By operating the lying on the central axis 15c actuating lever 13 in the release direction 9b to the release line 15a of the guide pin 12 is pressed against a second edge side 11b of the guide recess 11 and thereby the cocking slide 6 along the longitudinal guides 5a pushed into the release position. In the illustrated embodiment, the first edge side 11a small prongs 17 which generate a locking-like sliding of the guide pin 12 on the first edge side 11a and a corresponding noise during locking in the clamping device 5 and impart a feeling of detention, indicating haptically and acoustically the detection.

Fig. 7 shows a table with a table top 19a and four legs 18a, which are each held on a receiving assembly 2 on the table top 19a. The table legs 18a have an oval cross-section and are arranged on an underside of the table top 19a at a corner such that a longer axis of symmetry of the oval cross-sectional area of the table leg 18a lies on an angle bisector of the respective corner of the table top 19a.

Fig. 8a and 8b show a way to connect a support 18 with two mounting pins 3 with two different receiving modules 2. In this case, a respective fastening pin 3 is inserted into a receiving bushing 2 a of a receiving module 2 which is remote from the clamping lever 8, so that the two receiving modules 2 are arranged next to one another and coupled to each other with a respective receiving edge 24. Such a connection is in particular for the construction of large table surfaces made of composed of interconnected tables, such as. B. banquet or conference tables suitable.

Fig. 3 and 3a show a positioning rib 25 which is disposed on the conical trunnion body 3a. The two positioning ribs 25 of the two mounting pins 2 are arranged facing each other. Each conical Aumahmedurchführung 2a in the housing 23 is provided with a corresponding, not shown Positionierungsnut, in which a positioning rib 25 is accurately positioned, so that each mounting pin can be fixed to the housing 23 only in a certain, predetermined angular orientation. This is particularly important if, as explained above, a support 18 with two fixing pins 3 is to be fixed to two different receiving assemblies 2, since the orientation of the support relative to the receiving assembly is then already fixed when fixing a first fixing pin to a first receiving assembly.

The interaction between tensioning lever and cocking slide should be in Fig. 9a - 9b in a top view from above as well Fig. 10a - 10b be explained in more detail below from a plan view. In Fig. 9a and 10a are the cocking slide 6 and clamping lever 8 in the release position. It can be clearly seen that the guide pin 12 is arranged in a lateral region 11c of the guide recess 11, which adjoins the edge sides 11a, b and forms a transition therebetween. Fig. 9b and 10b show the cocking slide 6 and the clamping lever 8 in the locked position. The guide pin 12 is located below the rotation axis 8a on the first edge side 11a of the guide recess 11.

The clamping lever 8 is provided with a quarter-circle, with the axis of rotation 8 a as the center extending recess 26 (FIGS. Fig. 1 . 6 and 9 ), through which a fixedly connected to the housing 23 stop pin 28 engages and pivotal movement of the clamping lever 8 to form the stops 14a, 14b only within an angular range, in this case of +/- 45 ° with respect to the center line 15c allows.

Claims (10)

1. Connection assembly (1) for assembling items of furniture without tools, wherein a first furniture component, which is provided with a fastening pin (3), can be fastened to a second furniture component, which is provided with a receiving module (2), wherein the receiving module (2) comprises a receiving passage (2a) for receiving the fastening pin (3), wherein the fastening pin (3) has an undercut-type recess (4) and, once inserted into the receiving passage (2a), passes through a clamping passage (7) of a clamping slide (6) of a clamping mechanism (5) and can be arrested thereby, wherein the clamping slide (6) is linearly displaceable in a longitudinal guide (5a) transversely to a longitudinal axis (2b) of the receiving passage (2a), wherein the clamping slide (6) has a clamping section (7b) which is adjacent to the clamping passage (7) and which can be brought, by displacing the camping slide (6), into an arresting position engaging behind the recess (4) of the fastening pin (3), and wherein the clamping slide (6) can be displaced by a clamping lever (8) which is pivotable about an axis of rotation (8a) running parallel to the longitudinal axis (2b) of the receiving passage (2a), characterized in that the receiving module (2) has a first stop (14a) in the release position of the clamping lever (8) and has a second stop (14b) in the arresting position of the clamping lever (8), wherein the closing angle range (10a) and the opening angle range (10b) are arranged between the first stop (14a) and the second stop (114b), and wherein the opening angle range (10b) adjoins the first stop (14a) and extends as far as a neutral position (15) which is arranged in particular in the middle between the first stop (14a) and the second stop (14b).
2. Connection assembly according to claim 1, characterized in that the clamping slide (6) or the clamping lever (8) has a guide cutout (11) and the clamping lever (8) or the clamping slide (6) has a guide pin (12), wherein the guide pin (12) is arranged in the guide cutout (11) such that the guide pin (12) can be brought into contact with a first edge side (11a) of the guide cutout (11) by pivoting the clamping lever (8) into an arresting position (9a) in a closing angle range (10a), so that the clamping slide (6) can be displaced linearly into the arresting position, and wherein the guide pin (12) can be brought into contact with a second edge side (11b) of the guide cutout (11) when the clamping lever (8) is pivoted into a release position (9b) in an opening angle range (10b), so that the clamping slide (6) can be displaced linearly into a release position.
3. Connection assembly according to one of the preceding claims, characterized in that the clamping lever (8) has an actuating lever (13) which extends radially relative to the axis of rotation (8a).
4. Connection assembly according to claim 1, characterized in that the closing angle range (10b) adjoins the first stop (14a) and the second stop (14b).
5. Connection assembly according to claim 1, characterized in that the clamping mechanism (5) has a return spring (16), via which the clamping lever (8) can be pivoted into the neutral position (15) from a position between the second stop (14b) and the neutral position (15).
6. Connection assembly according to one of claims 2 to 5, characterized in that the first edge side (11a) of the guide cutout (11) has serrations (17).
7. Connection assembly according to one of the preceding claims, characterized in that a fastening pin (3) can be received in the receiving passage (2a) with a form fit in the release position and in the arresting position.
8. Connection assembly according to one of the preceding claims, characterized in that the recess (4) of the fastening pin (3) is designed as a circumferential groove.
9. Connection assembly according to one of the preceding claims, characterized in that the fastening pin (3) is attached to a strut (18) or a panel (19) and the receiving module (2) is attached to a panel (19) or a strut (18).
10. Connection assembly according to one of claims 1 to 9, characterized in that the first furniture component has two fastening pins (3) and the second furniture component has two receiving passages (2a) for receiving the fastening pins (3), wherein a distance between two adjacent receiving passages (2a) of a receiving module (2) is at least twice as great as the distance from one receiving passage (2a) to an adjacent furniture component edge, in particular a panel edge (20).

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