DE102009011976A1 - Connecting element for e.g. seat, of furniture, has two receiving openings for accommodating two furniture parts, where one of openings comprises barbed teeth that are formed for receiving one of furniture parts moving in opposite direction - Google Patents

Abstract

The element (1) has two receiving openings (2, 6) for accommodating two furniture parts. The two receiving openings comprise a recess (20) that is designed as a channel, where one of the openings comprises barbed teeth (13) that are formed for receiving one of the furniture parts moving in opposite direction. The other opening is designed as a center receiving opening, and contact surfaces between the furniture parts and the receiving openings are provided with an adhesive that conforms to DIN EN 923.

Description

The The present invention relates to a connecting element for screwless Connecting to a furniture component, with a first receiving opening for receiving the first furniture component, a connecting element for connecting at least two furniture components with at least a first receiving opening for receiving the first furniture component and a second receiving opening for receiving the second Furniture component, as well as a piece of furniture.

Such connecting elements are for example from the document DE 8331793 U in which a slat support for a chair made of spring slats is described. The slat carrier in this case has a first receiving opening, namely a tubular or C-shaped holding part 8th and a receiving pocket formed integrally with this part 9 into which one of the spring slats of the chair is received. In this case, the slat carrier may also be designed such that two receiving pockets are attached to the holding part at an angular distance from each other to accommodate both spring slats of the seat and spring slats of the backrest.

Also from the publication DE 29 815 190 U1 is a connecting element is known, which is designed as a longitudinal profile element whose end sides are open, so that in the open sides a back or seat surface can be inserted.

adversely at these known from the prior art fasteners is, however, that by inserting the spring slats or the lateral Inserting the seat or backrest surface so easily to be solved connection between tween the furniture component and the connecting element is provided that further fastening measures necessary to furniture component and connecting element firmly connect with each other. In particular, it is provided that Furniture components and the connecting element via To connect screws with each other. This additional Fastening or screwing, however, requires a further manufacturing step, so making a chair due to the many manufacturing steps is very time consuming.

task Therefore, it is a connection element for the present invention screwless connection with a furniture component, with a first receiving opening for receiving the first furniture component provide a high-strength connectivity provides between furniture component and connecting element, which can be dispensed with screws.

These The object is achieved by a connecting element according to claim 1 and a piece of furniture with such a connection element according to claim 19.

Of the The present invention is based on the finding, a high-strength Connection between a furniture component and a connecting element in that the connecting element with a receiving opening equipped, in which introduced the furniture component is, wherein the receiving opening has a toothing, the opposite direction to the recording direction of the furniture component is trained. Is the furniture component in the receiving opening introduced, and in particular pressed, wedged the teeth with the furniture component, allowing a pulling out of the furniture component is prevented from the receiving opening.

additionally can, as another embodiment shows, the contact surfaces between furniture component and Receiving opening be provided with adhesive, so that a high strength adhesive bond between furniture component and connecting element is achieved.

As an adhesive in the context of the application, all those substances come into question that after DIN EN 923 are defined as an adhesive. It states that an adhesive is a non-metallic material that can bond components (in this case furniture component and fastener) by surface adhesion and internal strength. The majority of adhesives are attributed to organic compounds, but there are also inorganic-based adhesives such as water glass or cement-based products (see also http://de.wikipedia.org/wiki/Klebstoff ).

there it is particularly advantageous if the receiving opening of the connecting element has flat channels, the Adhesive absorb, thereby removing the adhesive surfaces during the pressing of furniture component is prevented in receiving opening. These channels For example, they can be formed as a groove.

As shows a further embodiment is at an upper End of the receiving opening a projection, in particular a specially shaped nose, designed to be designed in a recess formed on the furniture component intervene, so that the furniture component in addition against a withdrawal is secured. In addition, this allows Projection that furniture component and connecting element match can be joined together.

In a further preferred embodiment For example, the first receiving opening is adapted to receive a substantially flat design furniture component. In this case, the flat design furniture component may be in particular a seat and / or backrest surface of a chair and / or a table surface and / or a shelf. The second receiving opening can then preferably be configured such that a furniture component embodied as a table or chair leg, armrest and / or shelf frame can be received therein.

It However, it is also possible that the second receiving opening likewise for the admission of a surface trained Furniture component is designed so that, for example, backrest surface and seat of a cantilever chair connected together can be.

is the second receiving opening for the reception of Table or chair leg, armrest and / or rack frame suitable, It is particularly advantageous if the second receiving opening for substantially in cross-section round furniture components is designed. To twist the substantially in cross section round furniture component in the receiving opening is further provided, the second receiving opening to equip with a one-sided flattening. Analog can the it also included such a furniture component Have Verfla chung. Become oval or angular in cross-section Furniture components can be used on such an additional Elongation be waived.

As shows a further embodiment, the second Receiving opening also be designed to cable and / or Include cable harnesses and / or small electronic components. Alternatively or additionally, the connecting element can also be equipped with at least one secondary chamber, preferably arranged between the first and second receiving opening is. This at least one secondary chamber can also be used for guidance of cables and / or cable strands and / or for receiving serve electronic and / or mechanical components. By This special design makes it possible to invisibly technical components, technical fasteners and electronics to integrate into a piece of furniture.

In a further preferred embodiment between the auxiliary chamber and the first receiving opening a connecting opening, which can be provided for example by milling. through This connection opening will allow that the connecting element with plastic or injected through can, so that connecting element and furniture component integral can be formed with each other.

Especially in the manufacture of a chair, this is advantageous because of the Possibility of penetrating the plastic through the Connecting element the production of a torsionally stiff composite tub made of fasteners and plastic, which does not require any further mechanical connection technology, to provide the structural framework for chair manufacturing.

Further Advantages and preferred embodiments are in the Subclaims, the description and the figures defined.

in the Below, the present invention with reference to in the drawings illustrated embodiments explained in more detail become. The embodiments are purely exemplary nature and are not intended to determine the scope of protection of the application. Same or similar components and elements will be in the following denoted by the same reference numerals.

The Figures show:

1 a schematic representation of a first preferred embodiment of the connecting element according to the invention;

2 : an excerpt from the in 1 illustrated connecting element;

3 a schematic representation of a second preferred embodiment of the connecting element according to the invention;

4 : a first enlarged detail view of the in 3 illustrated connecting element;

5 : a second enlarged detail view of the in 3 illustrated connecting element; and

6 : a schematic representation of a preferred embodiment of a seat according to the invention.

at the connecting element according to the invention is it is essentially a, preferably extruded, aluminum profile, which is especially designed to seat elements, backrests and feet of a chair towards each other connect. At the same time is the connecting element according to the invention but also suitable for other furniture components, such as for example, a table top with table legs or to connect shelves to a shelf frame.

The furniture components are pressed into receiving openings, which are formed on the connecting element, and / or in the glued. Although the connecting element according to the invention can be equipped with any number of receiving openings for furniture components, it has been shown constructively that with only two variants of the connecting element, a plurality of different furniture components can be interconnected. The two variants are referred to below as a straight connection element and angled connection element.

The 1 and 3 show the straight connection element 1 ( 1 ) or the angled connecting element 1' ( 3 ).

Both connectors 1 . 1' Common is a first receiving opening 2 , which is preferably arranged centrally and serves primarily for fastening furniture components designed as a chair leg and / or armrest and / or table leg and / or control frame. In this case, the cross section of these furniture components is preferably round before, but it can also be used square or oval cross-sections. Analogous to the cross section of the furniture component is the central receiving opening 2 educated. In the in the 1 and 3 embodiment shown are essentially round metal, plastic or wood elements of the receiving opening 2 be recorded.

To prevent twisting of the substantially round furniture components, has the receiving opening 2 also a one-sided flattening 4 on, which is also formed on the male furniture components. This flattening 4 defines a preferred direction of the fitted furniture component so that twisting is not possible.

Furthermore, the connecting element according to the invention 1 . 1' at least one lateral receiving chamber 6 on, which is preferably open in the longitudinal direction, and in which a flat design furniture component can be pressed and / or glued.

This side receiving opening 6 points in the in 1 shown straight connecting element 1 a bottom 8th on, which serves as a static support and as an adhesive surface for the male furniture component. The top 10 is nose-shaped and has at its upper end a projection 12 which is adapted to engage a recess formed on the male furniture component.

On the bottom 8th the receiving opening 6 is a gearing 13 arranged, which is formed in opposite directions to a receiving direction of the furniture component (see block arrow), so that in the receiving opening 6 pressed furniture component wedged in it. This gearing 13 will be detailed in 4 described.

Further shows 1 that secondary chambers 14 . 16 are provided, which are between the central receiving opening 2 and the side receiving opening 6 (Auxiliary chamber 14 ) or on the side of the receiving opening 6 opposite side of the first receiving opening 2 (Auxiliary chamber 16 ) are arranged. These side chambers 14 . 16 serve in particular for guiding at least one cable or wiring harness and for receiving electronic components or the additional attachment of mechanical small components (not shown). In addition, at these side chambers 14 . 16 Facing elements for the connecting element are attached. These secondary chambers make it possible to attach various technical components, technical fasteners and electronics invisibly to a piece of furniture.

2 shows an enlarged view of the central receiving opening 2 of in 2 shown straight connecting element 1 , As 2 can be seen, has the central receiving opening 2 next to the one-sided flattening 4 on its inner wall elevations 18 and depressions 20 on, which are formed as grooving in the longitudinal direction. The scoring serves, on the one hand, in the depressions 18 Adhesive can be added so that it is not removed during the insertion or pressing of the furniture component, but distributed evenly over the entire adhesive surface. In addition, leakage of the adhesive is prevented on open visible surfaces of the connecting element.

If the furniture component is not glued, but connected for example by cold pressure welding to the connecting element, the groove is chosen such that the elevations 18 a slightly smaller inner diameter of the central receiving opening 2 define as actually needed by an outer diameter of the furniture component. If the furniture component then in the central receiving opening 2 As a result of abrasion, an accumulation of material occurs, resulting in a cold-pressure welding connection between the central receiving opening 2 and accommodated furniture component is provided.

3 shows the second main variant of the connecting element according to the invention, namely the angled connecting element 1' , As 3 can be seen, the angled connecting element also has a central receiving opening 2 and secondary chambers 14 and 16 on. Instead, however, only one side receiving opening 6 shows 3 in that the angled connecting element has a second lateral receiving opening 6 which is arranged at an angle to the first lateral receiving opening and shows the same structure.

The angle at which both receiving openings are arranged relative to one another is arbitrary and can be determined in particular by the area of use of the connecting element. For example, the in 3 Angle shown selected so that a comfortable for a person steep slope of a recorded in the one side receiving opening backrest is defined to a recorded in the other since union receiving opening seat surface. Such an angle is preferably greater than 90 °.

Should however, the fastener is used for For example, a shelf with a shelf rear wall to connect, is another angle, in particular of 90 °, desirable. In the case of a connector for a shelf may also be provided, a third lateral receiving opening to provide on the connecting element, so that, for example, a Shelf with two shelf rear wall elements can be connected. This means at the same time that, as already noted, the connecting element not on the two side receiving openings shown in the figures is restricted.

In the 3 shown first and second lateral receiving opening 6 also have an extended bottom 8th on that as a static pad and adhesive surface for in the receiving openings 6 to be accommodated furniture components. The top 10 is shorter than the bottom 8th equipped and can also be provided with adhesive.

In the 1 and 3 shown receiving openings 6 are also only preferred embodiments of the lateral receiving opening. For example, it is within the scope of the disclosure to make the bottom and the top of the same length or to choose a short bottom and a long top. It is also conceivable that first and second (or even third, fourth, etc.) lateral receiving opening are formed differently from each other.

On the insides of the thighs 8th and 10 has the receiving opening 6 a gearing 13 on, which is opposite to the direction of recording (indicated by block arrows) formed. This gearing 13 is in the detail view of 4 clear to see. This shows the bottom 8th the receiving opening 6 exemplified two gears 22 and 24 at the same height also at the top 10 the receiving opening 6 can be found. Even if the gears 22 . 24 and 26 . 28 in the embodiment shown here are arranged at the same height, it goes without saying that a different arrangement and number of teeth are included in the scope of protection of the application. Furthermore, it is also included that the toothing can be designed as a row of teeth and / or as individual tooth elements.

In addition, besides the gearing 13 flat channels (not shown) may be formed in the longitudinal direction, like the groove 18 . 20 the central receiving opening 2 are adapted to receive an adhesive, so that a removal of the adhesive during the pressing of the furniture component is prevented. In particular, the surfaces of the furniture component, which come in direct connection with the connecting element, provided with adhesive and introduced into the lateral receiving opening, aligned and pressed. These channels can be present in the lateral receiving openings of all connecting elements, be it straight or angled in particular. However, it is also possible to equip only a single receiving opening with it.

5 shows, as already 2 , a detailed view of the central receiving opening 2 the angled connecting element 1' , Analogous to the detailed representation in 2 , here is the grooving of the central receiving opening 2 represents.

Have the furniture components in the central receiving opening 2 be included, a smaller diameter than the diameter of the central receiving opening 2 , specially shaped press-fit sleeves can be used, which are pressed into the receiving opening and glued by the same principle, so that they are firmly connected to the connecting element.

6 shows a schematic representation of a seat according to the invention, in which a seat 30 a backrest 32 and chair legs 34 and 36 by means of the connecting elements according to the invention 1 . 1' connected to each other. As 6 it can be seen, the seat surface 30 special formations 38 . 40 on, the contour of the lateral receiving chambers 6 the connecting elements 1 . 1' correspond. In the central reception openings 2 the connecting elements 1 . 1' are designed as a round tube chair legs 34 added. Also the 6 it can be seen that the backrest 32 a special molding 42 having the contour of the lateral second receiving opening 6 of the connecting element 1' equivalent.

By connecting element according to the invention is a screwless connection system provided for different furniture components with different materials. Its design allows for low material use a high-strength connection, which ensures high functionality and flexibility. In addition, this design principle allows statically difficult and filigree constructions to be implemented. As a result, for example, so-called free-swinging furniture can be produced, which does not require the additional support structures required in conventional constructions.

Alternatively to the in 6 illustrated connection possibility of the connecting elements 1 . 1' with, for example, the seat element 30 in which on the seat element 30 special formations 38 . 40 are formed, it is also possible, the connecting elements 1 . 1' and the seat element 30 as an integral element. For this purpose, the fasteners 1 . 1' between the side chambers 14 . 16 and the side openings 6 Connection openings (not shown), which allow the fasteners 1 . 1' With example plastic can be um- or injected. These connection openings can be provided for example by milling.

For the production of an integral seat element, preferably the front straight connecting element 1 and the rear angled connector 1' used in an injection mold for a seat, wherein the respective connecting elements can be covered laterally and partly on the surfaces. This injection mold is then injected or encapsulated, for example with glass fiber reinforced plastic, wherein the two connecting elements are enclosed by the plastic. In this case, the teeth formed on the support lips are enclosed by the plastic, so that a separation of the parts is excluded.

by virtue of the penetration of glass fiber reinforced plastic and Connecting elements is a torsionally stiff composite tub or seat made no further mechanical joining techniques needed, but only equipped with leg elements can be. This allows material, manufacturing, assembly and Energy costs are saved in the production.

1

straight connecting element

1'

angled connecting element

2

central receiving opening

4

superficiality

6

lateral receiving opening

8th

lower bearing surface

10

upper bearing surface

12

projection

14

secondary chamber

16

secondary chamber

18

deepening

20

survey

22-28

gearing

30

seat

32

backrest

34 36

chair legs

38 40, 42

conformation

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 8331793 U [0002]
• - DE 29815190 U1 [0003]

Cited non-patent literature

• - DIN EN 923 [0009]
• - http://en.wikipedia.org/wiki/Klebstoff [0009]

Claims (23)

Connecting element ( 1 . 1' ) for screwless connection to a furniture component, with a first receiving opening ( 6 ) for receiving the first furniture component, characterized in that the first receiving opening ( 6 ) a preferably barb-like toothing ( 13 ), which is formed opposite to the receiving direction of the first furniture component. Connecting element ( 1 . 1' ) according to claim 1, for screwless joining at least two furniture components with at least one first receiving opening ( 6 ) for receiving the first furniture component and a second receiving opening ( 2 ) for receiving the second furniture component, characterized in that at least the first receiving opening ( 6 ) a gearing ( 13 ), which is formed opposite to the receiving direction of the first furniture component. Connecting element ( 1 . 1' ) according to claim 1, wherein the connecting element ( 1 . 1' ) is an extruded extruded profile, which is preferably made of aluminum. Connecting element ( 1 . 1' ) according to any one of the preceding claims, wherein first and / or second receiving opening ( 6 . 2 ) at least one well ( 20 ), in particular a channel for receiving an adhesive, which is preferably flat and / or formed in the longitudinal direction. Connecting element ( 1 . 1' ) according to claim 4, wherein the at least one recess is formed as a groove, which is preferably formed in the longitudinal direction. Connecting element ( 1 . 1' ) according to one of the preceding claims, wherein the first receiving opening ( 6 ), a projection ( 12 ), which preferably at the upper end of the receiving opening ( 6 ) is arranged. Connecting element ( 1 . 1' ) according to one of the preceding claims, wherein the second receiving opening ( 2 ) is formed for receiving a substantially round in cross-section furniture component. Connecting element ( 1 . 1' ) according to claim 7, wherein the second receiving opening ( 2 ) furthermore a twist protection, in particular in the form of a one-sided flattening ( 4 ), having. Connecting element ( 1 . 1' ) according to one of the preceding claims, wherein the connecting element ( 1 . 1' ), a third receiving opening ( 6 ) for receiving a third furniture component. Connecting element ( 1 . 1' ) according to claim 9, wherein the third receiving opening ( 6 ) corresponding to the first receiving opening ( 6 ) is trained. Connecting element ( 1 . 1' ) according to claim 9 or 10, wherein the second receiving opening ( 2 ) is formed as a central receiving opening, in particular centrally between the first and the third receiving opening ( 6 ) is arranged. Connecting element ( 1 . 1' ) according to one of the preceding claims, wherein the connecting element ( 1 . 1' ) at least one secondary chamber ( 14 ; 16 ), which is preferably arranged between the first and third and the second receiving opening. Connecting element ( 1 . 1' ) according to claim 12, wherein the at least one secondary chamber ( 14 ; 16 ) is designed for guiding and / or fixing at least one cable or harness and / or for receiving electronic components. Connecting element ( 1 . 1' ) according to claim 12 or 13, wherein between the at least one secondary chamber ( 14 ; 16 ) and the first and third receiving opening, a connection opening is provided. Connecting element ( 1 . 1' ) according to one of the preceding claims, wherein the second receiving opening ( 2 ) is designed for guiding and / or fixing at least one cable or cable harness, and / or for receiving electronic components. Connecting element ( 1 . 1' ) according to one of the preceding claims, wherein the first receiving opening ( 6 ) is designed to receive a substantially flat design first furniture component, preferably a seat and / or backrest shell, and / or a shelf and / or a table surface. Connecting element ( 1 . 1' ) according to one of the preceding claims, wherein the second receiving opening ( 2 ) is adapted to receive a chair and / or table leg, and / or an armrest and / or a shelf frame. Connecting element ( 1 . 1' ) according to one of claims 9 to 16, wherein the third receiving opening ( 6 ) is adapted to receive a substantially flat trained third furniture component, preferably a seat and / or backrest shell, and / or a shelf and / or a table surface. Furniture with at least two furniture components, in particular table, seat and / or shelf furniture characterized in that the at least two furniture components with a connecting element ( 1 . 1' ) are connected to one another according to one of claims 1 to 18. Furniture according to claim 19, wherein the first Furniture component substantially flat, preferably as a seat and / or backrest shell, and / or as a shelf and / or as a table surface, is trained. Furniture according to one of the claims 19 or 20, wherein the second receiving opening as a chair and / or Table leg, and / or as an armrest and / or as a shelf frame formed is. Furniture according to one of claims 18 to 20, wherein the connecting element ( 1 . 1' ) has a third receiving opening which is adapted to receive a substantially flat design third furniture component, preferably a seat and / or backrest shell, and / or a shelf and / or a table surface. Furniture according to one of claims 18 to 21, wherein at least one of the furniture components has a notch, which with a formed in the receiving opening for receiving the furniture component projection ( 12 ) engages.