WO2013164267A1

WO2013164267A1 - Plug-in connection

Info

Publication number: WO2013164267A1
Application number: PCT/EP2013/058740
Authority: WO
Inventors: Jürgen Baum
Original assignee: Paul Hettich Gmbh & Co. Kg
Priority date: 2012-05-02
Filing date: 2013-04-26
Publication date: 2013-11-07
Also published as: CN104349697A; DE102012104918A1

Abstract

The invention relates to a plug-in connection, in particular for furniture frames, comprising a connector (10, 10', 10'', 10'''), which has at least one leg (12, 12'), which leg (12, 12') can be inserted into receptacle (9) of a profiled element (8), wherein ribs (20, 21, 22, 23) protruding substantially perpendicularly to a longitudinal axis of the profiled element (8) are provided on the at least one leg (12, 12'), wherein at least two ribs (20, 21, 22, 23) have a different length and at least the longer rib (22, 23) is bent from an angle substantially perpendicular to the longitudinal axis of the profiled element (8) upon insertion into the profiled element (8) and lies against an inner wall (81) of the profiled element (8) in a force-closed manner. A stable connection of the hollow profiled element to the connector is thereby obtained.

Description

connector

The present invention relates to a plug connection, in particular for Möbel belrahmen, with a connector having at least one leg, and the leg is inserted into a receptacle of a profile, wherein on the at least one leg substantially perpendicular to a longitudinal axis of the profile protruding ribs are provided.

DE 12 65 64 discloses a drawer in which side walls are fixed to one another via a corner joint. Each corner joint comprises a corner joint which has saw teeth at angled legs, which can be inserted into a hollow chamber. The holding forces between the corner connector and the hollow profile depend strongly on the tolerances in the production, in particular with regard to the clamping forces. This can lead to loose connections between corner connectors and side walls.

DE 155 41 89 discloses connecting elements for the production of boxes or drawers, in which board-shaped parts have barbs, which are inserted to increase the holding forces in a hollow chamber of another component. The rigid barb bars, however, can compensate for manufacturing tolerances bad.

It is therefore an object of the present invention to provide a connector, in particular for furniture frame, which allows a simple connection between hollow sections and can compensate for manufacturing tolerances.

This object is achieved with a connector with the features of claim 1. According to the invention the connector comprises a connector having at least two ribs having a different length and wherein at least the longer rib is bent when inserted into the profile from an angle substantially perpendicular to the longitudinal axis of the profile and frictionally rests against an inner wall of the profile. Depending on the size of the receptacle in the hollow profile, the ribs can be bent to different degrees so that tolerances can be compensated in a larger range. The ribs ensure a frictional attachment of the connector to the hollow profile. The ribs are bent from a starting position in which they are arranged substantially perpendicular to the longitudinal axis of the profile. In this case, the ribs can be aligned even during manufacture at a slight angle perpendicular to the longitudinal axis of the profile, for example at an angle between see 0 ° to 30 °, in particular 0 ° to 15 °, to then be bent during insertion of the connector ,

Preferably, at least two ribs of different lengths are frictionally against an inner wall or partition wall of the profile. In this case, the two ribs can be bent to a different extent, with both ribs providing a positive connection for fixing the connector to the profile. Preferably, at least three ribs of different lengths are provided, but it may also be formed four or five ribs on a leg of the connector. The length of the ribs may vary between 2 mm and 40 mm, in particular 4 mm to 20 mm, wherein the differences in the length of the ribs, for example between 1% and 20%, in particular 5% to 15% may vary. The length of the ribs is dimensioned so that when inserting the leg into a hollow profile, the ribs can indeed be bent, but still provide sufficient rear restoring forces for fixing the connector. Preferably, the ribs taper towards the end in cross section so that the tip of the ribs can be more easily bent than a leg portion adjacent the leg of the connector. This avoids breakage of the ribs even with stronger bending stresses.

Of course, it is also possible to equip a connector with any number of legs to make appropriate connections between hollow sections. The connector is preferably made of plastic, in particular as a one-piece component by injection molding.

According to a further embodiment, the connector comprises a central portion, which forms in each case a stop for an end edge of the profile. As a result, a defined installation position of the profile is ensured relative to the connector.

The connector is preferably formed as a corner connector, which serves to produce a frame. The profile can also be designed as a hollow profile. forms his. The connector can also be used for the construction of furniture, for example shelves. These shelves can be used for example for the storage of bottles, in particular for the storage of wine bottles. Of course, it is also possible to use the connector for fixing other components, for example sidewalls or side frames of drawers, for fastening railing profiles to furniture or for other purposes. Preferably, the leg has a first web with the at least two ribs, which is inserted into a first receptacle of the profile, and a second web, which is inserted into a second receptacle of the profile. As a result, a particularly stable attachment of the connector is achieved on the profile. The ribs preferably protrude inwards from a web and abut, for example, against a dividing wall in the hollow profile, which is preferably designed as a wall of an outwardly open groove. The first and the second receptacle in the hollow profile can also be connected to one another via a connecting region. The connector can be arranged on both sides of a straight, that is not rectangular shaped central portion to allow the connection of frontally parallel ends of the hollow sections, which could of course also have different cross-sections, of course, if the connector is dimensioned thereon.

Furthermore, the connector can also be arranged on a non-angularly designed central portion, in order to allow the connection of frontal not parallel, but at an angle not equal to 90 °, opposite ends of the hollow profiles.

Furthermore, the connector for connection for open profiles, such as angle profiles, can be used when the second web engages around the wall thickness of the angle profile. For this purpose, the connection area can be made slotted in relation to the first web or the connecting web is not slotted, but then surrounds a longitudinal edge of the angle profile.

Furthermore, the connector may also be designed in several parts of different materials, for example, the connector itself made of plastic and the ribs made of spring steel, since the resistance to pull out of the connected Profiles significantly depends on the compressive stiffness of the material of the ribs, the bending of both webs is better to ensure clamping with the material plastic. Such a design even allows permanent connections when the material of the profiles to be joined is softer than the spring steel material, since then the ribs dig there plastically in the surface.

The invention will be explained in more detail with reference to several embodiments with reference to the accompanying drawings. Show it:

Figure 1 is a perspective view of a drawer with a frame;

Figure 2 is a perspective view of the drawer of Figure 1 without

Commitment;

Figure 3 is a perspective view of the frame of the drawer of

Figure 1 with multiple corner joints;

Figure 4 is a perspective view of a corner joint of the frame of

Figure 3 during assembly;

Figure 5 is a perspective view of the corner joint of Figure 4 in the

Assembly; Figure 6 is a perspective sectional view of the corner joint of Figure 3 after assembly;

Figure 7 is a perspective detail view of the corner joint of Figure 6; Figure 8 is a perspective view of another embodiment of a connector;

Figure 9 is a perspective view of another embodiment of a connector, and

Figure 10 is a perspective view of another embodiment of a connector. A drawer 1 comprises on opposite sides side frames 2, in which a pullout guide 3 can be mounted. On the side frames 2, a frame 4 is fixed, on which an insert 5 is mounted, which rests with an outwardly projecting edge 6 on the frame 4. The insert 5 can be used as a container for holding liquid, garbage, dishes or other purposes.

In FIG. 2, the drawer 1 is shown without the insert 5 and the peripheral frame 4 can be seen, which has hollow profiles 8, which are connected to one another at the corner regions by means of connectors 10. The frame 4 is shown in detail in FIG. 3 and comprises four hollow sections 8, which are connected to one another via four connectors 10.

In Figure 4, a corner joint is shown prior to assembly. Each connector 10 comprises a central portion 1 1, of which two legs 12 and 12 'extend at an angle, wherein the legs 12 and 12' are of identical construction. The central portion 1 1 protrudes outwardly in a direction perpendicular to the longitudinal axis of the hollow section 8 and forms an edge-shaped stop 13 for abutment of a front edge of the hollow section 8.

Each leg 12, 12 'comprises a first web 14 formed in the longitudinal direction of the hollow profile 8 and a spaced second web 15 which is formed parallel to the longitudinal direction of the hollow section 8. The webs 14 and 15 are connected to each other via a plate-shaped bottom portion 16, so that each leg 12, 12 'has a substantially U-shaped cross-section.

On the web 14 15 facing ribs 20, 21, 22, 23 are provided inwardly to the second web, which have a different length. The length increases from the shortest rib 20 to the rib 23 having the longest length.

For the assembly of the connector 10 made of plastic, the leg 12 'or 12 is inserted into the hollow profile 8, as shown in Figure 5. The hollow profile 8 in this case has a first receptacle 9, which is separated from a second receptacle 90 by an outwardly open groove 80. The

Groove 80 has lateral groove walls 81 and 82 which separate the receptacles 9 and 90 from each other on the hollow profile. The groove 80 does not extend over the entire height of the hollow profile 8, so that the receptacles 9 and 90 mitei- Nander are connected and also the bottom portion 16 of a leg 12 and 12 'in the hollow section 8 can be inserted.

When inserting the leg 12 'first reaches the shortest rib 20 in the receptacle 9. Since the receptacle 9 has a width which is greater than the length of the shortest rib 20, the rib 20 is not on the groove wall 81 and can be freely in the recording 9 are moved. The somewhat longer rib 21 has approximately the same length as the width of the hollow chamber 9, so that it is received in a substantially positive fit between the groove wall 81 and an outer wall of the hollow section 8. The rib 22 is formed longer than the shorter ribs 20 and 21 and is thus longer than the width of the receptacle 9. Thus, the rib 22 can only be inserted into the receptacle 9, that the rib 22 bends from its original position. The even longer than the rib 22 formed rib 23 must be bent when inserting the leg 12 '. The ribs 20 to 23 have for this purpose a tip 24, at which the cross-section of the rib tapers, so that it can be bent more easily in the region of the tip 24.

The spaced web 15 on the connector 10 is inserted into a second receptacle 90 which is formed between the groove wall 82 and an outer wall of the hollow section 8.

In Figure 6, the connector 10 is shown with the leg 12 'in the mounted position with an outer wall of the hollow section 8 omitted. While the ribs 20 and 21 extend substantially perpendicular to the longitudinal axis of the hollow profile 8, the ribs 22 and 23 are bent over, with the longest rib 23 being more bent than the somewhat shorter rib 22.

In Figure 7, the position of the ribs 20, 21, 22, 23 is shown in detail. From its initial position essentially perpendicular to the longitudinal axis of the hollow profile 8, the rib 22 has been deflected by the angle β, while the longest rib 23 has been deflected by the angle α. The angle α for the deflection of the longest rib 23 may be in a range between 15 ° and 50 °, in particular 25 ° and 40 °. The angle β may be in a range between 1 ° and 35 °, in particular 10 ° to 25 °.

The length of the ribs 20 to 23 is designed so that a bending from the starting position is possible without the ribs breaking. The ribs For example, have a length between 3 mm and 30 mm, in particular 5 mm to 15 mm.

By the bent-over ribs 22 and 23, the hollow profiles 8 are secured against being pulled out of the connector 10, since the ribs 22 and 23 rest non-positively on the groove wall 81 and press the web 14 against the outer wall of the hollow section 8. As a result, the ribs 22 and 23 act as locking teeth, which prevent withdrawal of the hollow profile, wherein tolerances in the production of the hollow section 8 and the size of the receptacle 9 and in the length of the ribs 20, 21, 22, 23 offset by the bending of the ribs can be.

In the illustrated embodiment, each leg 12, 12 'on four ribs 20, 21, 22, 23 of different lengths. Of course, it is also possible to provide only two or three ribs or more than four ribs of different lengths on each leg 12, 12 '.

The ribs 20, 21, 22, 23 abut against a groove wall 81 of the hollow section 8. Of course, it is also possible for the ribs to come to rest on an outer wall of the hollow profile 8.

The connector 10 is preferably made of plastic, but may also be partially made of other materials, such as ribs of resilient metal.

FIG. 8 shows a modified embodiment of a connector 10 ', which has an elongated middle section 11', on the opposite sides of which a leg 12 is formed in linear alignment. Each leg 12 is provided in the transition to the central portion 1 1 'with a front soapy stop 13, on which an end face of a hollow section 8 can come to rest. Each leg 12 comprises a first web 14 on which a plurality of ribs 20 to 24 of different lengths are formed and a spaced second web 15, wherein the webs 14 and 15 are connected to each other via a bottom portion 16. The leg 12 is formed substantially as in the previous embodiment.

FIG. 9 shows a modified embodiment of a connector 10 "which, in contrast to the connector 10 'of FIG. 8, has an angled middle section 11", to which in each case a leg 12 adjoins. The Legs 12 are formed as in the previous embodiments with webs 14 and 15 and ribs 20 and 24. The legs 12 are aligned at an angle between 90 ° and 180 °, wherein the legs 12 can be arranged at any angle to each other, depending on the purpose for which the connector 10 "is used.

10, there is shown another embodiment of a connector 10 '' which, unlike the previous embodiments, has more than two legs 12. A central portion 11 '' is of cruciform shape and four legs 12 are provided which project outwardly and as in the foregoing embodiments with webs 14 and 15, a bottom portion 16 and ribs 20 to 24 are formed.

Of course, it is also possible to equip a connector with a different number of legs 12 to make appropriate connections between hollow sections 8.

Of course, it is also possible to use the connector for fixing other components, for example sidewalls or side frames of drawers, for fastening railing profiles to furniture or for other purposes.

LIST OF REFERENCE NUMBERS

1 drawer

2 side frame

3 pullout guide

4 frames

5 use

6 edge

8 hollow profile

9 receptacle / hollow chamber

10, 10 ', 10 ", 10" connector

11, 11 ', 11 ", 11"' middle section

12, 12 'thighs

13 stop

14 footbridge

15 footbridge

16 floor section

20 rib

21 rib

22 rib

23 rib

24 point / rib

80 groove

81 groove wall / inner wall

82 groove wall

90 recording α angle

ß angle

Claims

claims

1 . Plug connection, in particular for furniture frames, with a connector (10, 10 ', 10 ", 10"') having at least one leg (12, 12 '), and the leg (12, 12') in a receptacle (9) a profile (8) can be inserted, wherein on the at least one leg (12, 12 ') substantially perpendicular to a longitudinal axis of the profile (8) protruding ribs (20, 21, 22, 23) are provided, characterized in that at least two ribs (20, 21, 22, 23) have a different length and at least the longer rib (22, 23) when inserted into the profile (8) from an angle substantially perpendicular to the longitudinal axis of the profile (8) is bent and non-positively on an inner wall (81) of the profile (8) rests.

2. Plug connection according to claim 1, characterized in that at least two ribs (22, 23) of different lengths bear non-positively on an inner wall (81) of the profile (8).

3. Plug connection according to claim 1 or 2, characterized in that at least three ribs (20, 21, 22, 23) of different lengths are provided, preferably four or five ribs.

4. Plug connection according to one of the preceding claims, characterized in that the ribs (20, 21, 22, 23) have a length between 2 mm and 40 mm, in particular 4 mm to 20 mm.

5. Plug connection according to one of the preceding claims, characterized in that the ribs (20, 21, 22, 23) taper towards the end in cross section.

6. Plug connection according to one of the preceding claims, characterized in that the connector (10, 10 ', 10 ", 10"') is made of plastic.

7. Plug connection according to one of the preceding claims, characterized in that the connector (10, 10 ', 10 ", 10"') has a central portion (1), each having a stop (13) for an end edge of the profile (8). formed.

8. Plug connection according to one of the preceding claims, characterized in that each leg (12, 12 ') has a first web (12) with the at least two ribs (20, 21, 22, 23) in a first receptacle (9 ) of the profile (8) is inserted, and a second web (15) which is inserted into a second receptacle (90) of the profile (8).

9. Plug connection according to claim 8, characterized in that the first receptacle (9) and the second receptacle (90) separated by at least one partition wall (81, 82), in particular in the form of an outwardly open groove (80) to the outside are.

10. Plug connection according to one of the preceding claims, characterized in that the connector (10, 10 ', 10 ", 10"') has at least two legs (12), on each of which at least two ribs (20, 21, 22, 23 ) are formed.

1 1. Connector (10, 10 ', 10 ", 10"') for a connector according to one of the preceding claims.

12. drawer (1), with a frame (4), the at least one

Connector according to one of claims 1 to 10.