CH716617A1 - Connection clamp for a piece of furniture. - Google Patents

Abstract

A connecting clamp (4a) for connecting a wooden body to a metal cube comprises an adapter housing (7) with a cavity and a first screw which has a first screw head (6a) and a first screw shaft (6b) with a thread. The first screw head (6a) is arranged in the cavity of the adapter housing (7) and the first screw shank (6b) is arranged and designed in such a way that the counter-body (2) for connection to the connecting clamp (4a) with the thread of the first screw shank (6b ) can be screwed.

Description

description

Field of the invention

The invention relates to a connecting clamp for connecting a wooden body with a counter body, in particular with a metal cube. The connection tensioner comprises an adapter housing with a cavity and a first screw which has a first screw head and a first screw shaft with a thread. The invention further relates to a connection system and a piece of furniture which comprise the said connection clamp.

background

Simple pieces of furniture, such as frames, shelves and cabinets, consist of a plurality of elements which are screwed together, glued or otherwise connected in a non-detachable or difficult-to-detachable manner. In the case of other pieces of furniture, the individual elements can easily be dismantled. However, after just a few assemblies and disassemblies, these already show severe signs of wear, so that the elements can no longer be connected to one another in a robust manner. The longevity of such pieces of furniture is therefore limited.

High-quality and durable pieces of furniture that can be assembled and disassembled several times without the piece of furniture losing quality, consist mainly of metal and other robust components. The metallic components are held together by means of so-called connecting clamps.

Presentation of the invention

The object is to provide a connection clamp which is particularly suitable for use in wooden furniture.

This object is achieved by the subject matter of the independent claim. Accordingly, the connecting clamp is suitable for connecting a wooden body to a counter body, in particular to a metal cube. It comprises an, in particular elongate, adapter housing with a cavity and a first screw which has a first screw head and a first screw shaft with a thread. The first screw head is arranged in the cavity of the adapter housing and the first screw shaft is designed and arranged in such a way that the counter body can be screwed to the thread of the first screw shaft for connection to the connecting tensioner.

In particular, the first screw head and / or the end of the first screw shaft comprise a hexagon socket.

The screwing of the counter body with the thread of the screw shaft and the arrangement of the first screw in the adapter housing allow a simple and robust connection between the connection clamp and the counter body.

The adapter housing is advantageously designed as a hollow cylinder. In particular, the first screw can only be introduced into the adapter housing via openings arranged on the base surfaces of the hollow cylinder.

In a particular embodiment, the first screw is arranged within the adapter housing such that the underside of the first screw head, which is adjacent to the first screw shaft, in the clamped state on a pressure surface of the adapter housing, or on a pressure plate, which is arranged within the adapter housing is, presses.

The pressure plate increases the contact area between the screw head and the adapter housing so that the clamping force can be transmitted over a larger area.

In particular, the connecting tensioner has a second screw with a second screw head and a second screw shaft, the second screw head being arranged within the adapter housing. The second screw head preferably comprises a hexagon socket.

The adapter housing thus holds the first and the second screw together. While the first screw is used to connect to the counter body, the second screw is used to transfer the tension forces to the wooden body.

The first screw and the second screw are advantageously arranged in the adapter housing such that the central axes of the two screws lie on a common axis, and / or the two screws are spaced apart, and / or the screws are aligned head to head, and the screw shafts are directed away from each other.

In particular, the connecting tensioner comprises a pressure body, in particular a sliding nut, which is screwed to the second screw shaft. In the clamped state, the pressure body, in particular the sliding nut, transmits the tensioning force from the connecting tensioner, in particular from the second screw, to the wooden body. In particular, the pressure body has a sufficiently large contact surface so that the wood of the wooden body is not damaged when the connecting tensioner is braced with the counter body and the wooden body.

A spring with contact between the two screw heads is advantageously arranged between the first screw and the second screw. The arrangement is such that the spring presses the first screw and the second screw away from each other. In particular, the adapter housing has a lateral groove opening through which the tongue can be inserted into the cavity of the adapter housing.

A connection system which comprises the connection clamp according to the invention and the wooden body is also protected. The wooden body has a cavity in which the adapter housing is arranged, and / or the wooden body has a rod shape and a groove in the longitudinal direction, in particular two, in particular three, in particular four grooves, one of the grooves being arranged and configured in such a way that that the first screw head can be actuated through the groove with a key, in particular a hexagon wrench, in particular by inserting the key into a hexagon socket opening arranged on the first screw head.

The wooden body is preferably a wooden connecting rod which connects at least two counter-bodies to one another. In such an embodiment, the connection system comprises the wooden connecting rod and two connecting clamps, which can each be screwed to a counter body.

In particular, the second screw head, in particular the second screw, is arranged completely within the wooden body.

In a particular embodiment, the pressure body is arranged within the wooden body in such a way that it presses on the wooden body in the clamped state and thereby transmits the clamping force to the wooden body. The pressure body can press on the wooden body via an additional pressure plate. This increases the contact area between the wood body and the pressure body so that the wood is not damaged even under high stresses.

The wooden body advantageously comprises two wooden components, in particular two identical wooden components, which together form a cavity. In particular, the two wooden components are firmly connected to one another, in particular glued. Furthermore, the adapter housing can be arranged within the cavity.

A pressure body, in particular a sliding nut, preferably traverses the adapter housing. The pressure body is arranged in such a way that in the tensioned state it presses on the wooden body, in particular via an additional pressure plate. The additional pressure plate increases the contact area between the pressure and the wooden body.

A piece of furniture with a connection clamp according to the invention or a connection system according to the invention and the counter body is also protected. In particular, the at least one counter-body is designed in such a way that it can be screwed to at least two, in particular a total of six, connection clamps, and / or with a counter-body being arranged at each corner of the piece of furniture.

The counter-body is designed in particular as a cube, with a bore with an internal thread, which can be screwed to the first screw of the connecting clamp, is arranged in particular on each side of the cube.

Furthermore, the wooden body comprises a recess on the side on which the first screw shaft protrudes from the wooden body, so that the wooden body and the counter body adhere well to one another.

Brief description of the drawings

[0025] Further embodiments, advantages and applications of the invention emerge from the dependent claims and from the description that now follows with reference to the figures. Show:

Fig. 1a

a shelf with connection clamps and connection systems according to the invention;

Figure 1b

an exploded view of a shelf component;

Fig. 2a

a first embodiment of a wooden pole with two built-in connecting clamps;

Figure 2b

a side view of the first wooden rod;

Figure 2c

a detailed view of the first wooden rod according to FIG. 2a;

Fig. 2d

the first wooden pole only showing the edges;

Fig. 3a

a second embodiment of a wooden pole with two built-in connecting clamps;

Figure 3b

one of two halves of the second wooden pole;

Figure 3c

a side view of the second wooden rod;

Figure 4a

the connecting tensioner according to the first embodiment;

Figure 4b

the first connecting clamp only showing the edges;

Figure 4c

the adapter housing;

Figure 4d

the first screw;

Figure 4e

the second screw;

Fig. 4f

the compression spring;

Fig. 4g

the pressure plate;

Fig. 4g

the pressure body designed as a sliding nut;

Figure 5a

the connecting tensioner according to the second embodiment;

Figure 5b

the second connecting clamp only showing the edges;

Figure 5c

the pressure body designed as a sliding nut;

Fig. 5d

the auxiliary pressure plate on which the pressure body exerts pressure;

Figure 5e

the first screw;

Figure 6a

a counter body in 3D view;

Figure 6b

a counter body only showing the edges;

Figure 7a

a connection system with a connection clamp according to the first embodiment with the screwed counter body;

Figure 7b

the connection system according to FIG. 7a only showing the edges;

Figure 7c

the connection system according to FIG. 7a in a 3D view.

Ways of Carrying Out the Invention

1a shows an assembled shelf. The shelf comprises wooden rods 1, designed as metal cubes counter body 2, which hold the wooden rods 1 together, and wall surfaces or doors 3. The wooden rods 1 can also be referred to as wooden bodies and consist, for example, of oak, beech, walnut or maple. The wooden bars and wall surfaces can also be painted in any color.

1b shows an exploded view of a shelf component of the shelf according to FIG. 1a. The wooden bars 1, which are held together by the counter-bodies 2, and the wall surfaces 3 are also visible.

2a to 2d show a first embodiment of the invention. 2a shows a wooden rod 1 with two connecting clamps 4 according to the invention. The wooden rod 1 comprises four side surfaces and two end surfaces. It has grooves 5 along three side surfaces, which are clearly visible in FIG. 2b.

FIG. 2c shows a detailed view of FIG. 2a. It can be seen how a first screw 6 of the connecting tensioner 4 protrudes outward through an opening on the first end face of the wooden rod 1. The counter body 2 can be screwed or braced to the wooden rod 1 at this first screw 6.

2d shows a view of the wooden rod 1, in which the surfaces are hidden and only the edges are shown. It can be seen that the wooden rod 1 comprises two connecting clamps 4. Correspondingly, on both end faces of the wooden rod 1, first screws 6 protrude through openings in the wooden rod 1. Counter-body 2 can be screwed to both end faces with the first screw 6.

3a to 3c show a second embodiment of the invention. The same reference symbols are used for both the first and the second embodiment.

3c shows a side view of the wooden rod 1. First screws 6 also protrude from the wooden rod 1 on both end faces. The wooden rod 1 according to the second embodiment, in contrast to the wooden rod according to the first embodiment, does not have any grooves. The wooden pole consists of two identical wooden pole halves that are glued together. One of the two wooden pole halves is shown in Fig. 3b.

3a shows the wooden rod 1 with hidden surfaces. Connection clamps 4 are arranged at both ends of the wooden rod 1.

4a shows the connecting clamp 4 as it is installed twice in the first embodiment of the wooden rod 1 according to FIGS. 2a to 2d. The connecting clamp 4 comprises an adapter housing 7, as shown in FIG. 4c. The adapter housing 7 has a groove opening 8, is designed as a hollow cylinder and accordingly has a cavity.

The first screw 6, which is shown in FIG. 4d, is arranged at least partially within the adapter housing 7. It comprises a first screw head 6a and a first screw shaft 6b with a full thread. A hexagon socket 9 is arranged both on the first screw head 6a and on the end of the first screw shaft 6b. The first screw head 6a is arranged completely within the adapter housing 8 and the first screw shank 6b protrudes out of the adapter housing 7 through an opening arranged on the base surface, all of which is visible in FIG. 4b.

A second screw 10 is arranged on the opposite side. It comprises a second screw head 10a and a second screw shank 10b with a partial thread. The second screw head 10a is arranged completely within the adapter housing 7.

The first screw 6 and the second screw 10 are arranged within the adapter housing 7 in such a way that the central axes of the two screws 6 and 10 lie on a common axis. The first screw head 6a and the second screw head 10a are aligned head to head with respect to one another and the screw shafts 6b and 10b are directed away from one another. Furthermore, the two screws 6 and 10 are spaced apart from one another by a spring 11. The spring 11, which is shown in Fig. 4f, presses the screws 6 and 10 away from each other. It presses the screw heads 6a and 10a each against a pressure plate 12, which in turn press against surfaces of the adapter housing 7. The pressure plate 12 is shown in Fig. 4g.

A pressure body 13, which is designed as a sliding nut, is arranged on the second screw shaft 10b. The sliding nut is shown in Fig. 4h.

When the counter body 2 is screwed onto the first screw 6, the wooden rod 1 is braced with the counter body 2 via the connecting clamp 4. The force flows in the following order: counter body 2, screw shaft 6b, screw head 6a, pressure plate 12, adapter housing 7, pressure plate 12, screw head 10a, screw shaft 10b, pressure body 13, wooden rod 1.

5a shows the connecting clamp 4 as it is installed twice in the second embodiment of the wooden rod 1 according to FIGS. 3a to 3c. Compared to the first embodiment, the adapter housing 7, the spring 11 and the pressure plate 12 are designed identically. In the second embodiment, the first screw 6 has a through hole.

A second screw 10 is, however, dispensed with. For this purpose, the pressure body 13 passes through the adapter housing 7. The pressure body 13 then transmits the force to an additional pressure plate 14 which surrounds the adapter housing 7. Compared to the first embodiment, the pressure body 13 is configured somewhat longer and does not include a thread.

In the tensioned state, the force flows in the following order: counter body 2, screw shaft 6b, screw head 6a, pressure plate 12, adapter housing 7, pressure body 13, additional pressure plate 14, wooden rod 1.

6a and 6b show a counter body 2. The counter body 2 is a metal cube which has a bore with an internal thread on each side surface. The holes are continuous in the metal cube.

7a to 7c show a device according to the invention, in which the counter body 2 is connected or braced to the wooden rod 1 via the connecting clamp 4. This is the first embodiment described, in which the wooden rod 1 has grooves 5. It should be noted that recesses 15 are arranged on the end sides of the wooden rod 1 so that the counter-body 2 and the wooden rod 1 are misaligned with respect to one another and thus adhere better to one another. The recess 15 is clearly visible in Fig. 2c.

The assembly of the first embodiment, which is shown in FIGS. 2a to 2d, 4a to 4h and FIGS. 7a to 7c, comprises the following steps:

- In a first step, the adapter, as shown in Fig. 4a, is assembled.

The pressure plate 12, which comes to lie on the side of the second screw 10, is guided into the cavity of the adapter housing 7 through the opening arranged on the base of the hollow cylindrical adapter housing 7.

- From the opposite side, i.e. from the side on which the first screw 6 comes to lie, the second screw 10 is inserted through the opening on the base of the cylindrical adapter housing 7 into the cavity.

- The first screw 6 and then the pressure plate 12 are introduced through the same opening.

The tongue 11 is inserted through the groove opening 8 so that the pressure plates 12, the first screw 6 and the second screw 10 are positioned.

- The assembled adapter is inserted into the wooden rod through an opening on the end side of the wooden rod.

- The pressure body 13 is let into the wooden rod 1 through an opening 15 arranged in the groove 5. An Allen key with a rounded head, with which the second screw 10 is screwed to the pressure element 13, is guided through the groove opening 8.

- The counter body 2 is clamped to the wooden rod 1 via the connecting clamp 4 or the counter body is screwed to the screw shaft 6b. For this purpose, an Allen key with a rounded head is guided laterally and at an angle through the groove opening 8, which the first screw 6 on the hexagon socket of the screw head 6a

Claims (13)

turns. The Allen key grips through the spring 11 for this purpose. Alternatively, the Allen key can also be pushed through the counter body 2 in order to turn the first screw 6 on the hexagon socket located at the end of the first screw shaft 6b. The spring 11 in the cavity ensures that the first screw 6 and the second screw 10 remain in position. - Counter body 2 and wooden rod 1 are already clamped. The assembly of the second embodiment, which is shown in FIGS. 3a to 3c and in FIGS. 5a to 5e, comprises the following steps: In a first step, the adapter, as shown in FIG. 5a , assembled. The pressure plate 12 is guided into the cavity of the adapter housing 7 through the opening arranged on the base of the hollow cylindrical adapter housing 7. - From the same side, i.e. from the side on which the first screw 6 comes to lie, the first screw 6 is inserted through the opening on the base of the cylindrical adapter housing 7 into the cavity. The pressure body 13 is pushed through the adapter housing 7. The tongue 11 is inserted through the groove opening 8 into the cavity of the adapter housing 7. - The additional pressure plate 14 is placed on the adapter housing 7. - The assembled adapter is inserted into one half of the wooden rod 1, as shown in Fig. 3b. A second assembled adapter is inserted at the other end of the wooden pole. - The second half of the wooden rod 1 is glued to the first half of the wooden rod 1. - The counter body 2 is clamped to the wooden rod 1 via the connecting clamp 4 or the counter body is screwed to the screw shaft 6b. A long Allen key is passed through the first screw 6, which has a through hole, and then through the entire wooden rod 1 to the other side in order to tighten the first screw 6. While preferred embodiments of the invention are described in the present application, it should be clearly pointed out that the invention is not limited to these and can also be carried out in other ways within the scope of the following claims. Claims 1. Connection clamp (4) for connecting a wooden body (1) with a counter body (3), in particular with a metal cube, having an, in particular elongated, adapter housing (7) with a cavity and a first screw (6) which has a first screw head (6a) and a first screw shank (6b) with a thread, characterized in that the first screw head (6a) is arranged in the cavity of the adapter housing (7) and the first screw shank (6b) is arranged and designed in such a way that the counter body (2) can be screwed to the thread of the first screw shaft (6b) for connection to the connecting clamp (4). 2. Connection clamp (4) according to claim 1, wherein the adapter housing (7) is designed as a hollow cylinder, in particular wherein the first screw (6) can only be introduced into the adapter housing (7) via openings arranged on the base of the hollow cylinder. 3. Connection clamp (4) according to claim 2, wherein the first screw (6) is arranged within the adapter housing (7) such that the underside of the first screw head (6a), which adjoins the first screw shaft (6b), is in the clamped state presses against a pressure surface of the adapter housing (7) or against a pressure plate (12) which is arranged inside the adapter housing (7). 4. connecting clamp (4) according to claim 2 or 3, wherein the connecting clamp (4) has a second screw (10) with a second screw head (10a) and a second screw shaft (10b), the second screw head (10a) within the adapter housing (7) is arranged. 5. connecting clamp (4) according to claim 4, wherein the first screw (6) and the second screw (10) in the adapter housing (7) are arranged such that - The central axes of the two screws (6, 10) lie on a common axis, and / or - The two screws (6, 10) are spaced apart, and / or - the screws (6, 10) are aligned head to head and the screw shafts (6b, 10b) are directed away from each other. 6. Connection clamp (4) according to one of claims 4 or 5, having a pressure body (13), in particular a sliding nut, which is screwed to the second screw shaft (10b). 7. connecting clamp (4) according to any one of claims 4 to 6, wherein between the first screw (6) and the second screw (10) a spring (11) with contact of the two screw heads (6a, 10a) is arranged and such that it pushes the first screw (6) and the second screw (10) away from each other, in particular wherein the adapter housing (7) has a lateral groove opening (8) through which the tongue (11) can be inserted into the cavity of the adapter housing (7). 8. Connection system comprising a connection clamp (1) according to one of the preceding claims and the wooden body (1), wherein - The wooden body (1) has a cavity in which the adapter housing (7) is arranged, and / or - The wooden body (1) has a rod shape and a groove (5) in the longitudinal direction, which is arranged and designed such that the first screw head (6a) can be actuated through the groove (5) through the groove (5), in particular by inserting the key into a hexagon socket opening arranged on the first screw head (6a). 9. Connection system according to claim 8 and according to one of claims 4 to 7, wherein the second screw head (10b), in particular the second screw (10), is arranged completely within the wooden body (1). 10. Connection system according to claim 8 or 9 with a connection clamp (4) according to claim 6, wherein the pressure body (13) is arranged within the wooden body (1) such that it is clamped onto the wooden body (1), in particular via an additional pressure plate (14), presses and thereby transmits the clamping force to the wooden body (1). 11. Connection system comprising a connection clamp (4) according to one of claims 1 to 3 and a wooden body (1), wherein the wooden body (1) has two wooden components, in particular two identical wooden components, which together form a cavity, in particular wherein - The two components are firmly connected to one another, in particular glued, and / or - The adapter housing (7) is arranged within the cavity. 12. Connection system according to claim 11, wherein a pressure body (13), in particular a sliding nut, the adapter housing (7) passes through and is arranged such that it presses in the clamped state on the wooden body (1), in particular via an additional pressure plate (14) . 13. Piece of furniture comprising at least one connection clamp (4) according to one of claims 1 to 7 or a connection system according to one of claims 8 to 12 and at least one counter body (2), in particular - wherein the at least one counter body (2) is designed in such a way that it can be screwed to at least two, in particular to a total of six, connection clamps (4), and / or - A counter body (2) is arranged at each corner of the piece of furniture.