DD233396A5 - CONNECTION OF LIQUID PARTS, ESPECIALLY IN MOEBELS - Google Patents

Abstract

In the serving for connection element is from the two end faces depending from a Laengsbohrung mounted at the ends of one or more continuous transverse bores are arranged, wherein the existing on the front side tip is cut by a Laengsbohrung. This achieves an improved distribution of the adhesive placed in the cylindrical bores of the parts to be joined which is hermetically sealed in a flexible sleeve. To achieve a tight locking connection is a rotary member whose cylindrical bore is arranged at right angles and offset from the cylindrical bore for the connecting element, that while the cylindrical bore for the connecting element is cut. When turning the rotary member engages this with the profiles of the lateral surface in the lateral surface of the connecting element and pulls this easily in the direction of the connecting joint. Fig. 21

Description

Field of application of the invention

The invention relates to a compound of flat parts, especially in furniture made of wood or wood-like material, using adhesive and a connecting element, in which the adhesive hermetically enclosed in a flexible sheath and the shell with the enclosed adhesive as an independent part, the approximately cylindrical Form having a frontal cover, in the cylindrical boreholes of the parts to be joined there is verklemmend introduced introduced and in which the connecting element for invisible connection in the bores can be driven or pressed and on the outer surface pressed or cut profiles, and formed from a compressed by a predetermined amount of cylindrical blank made of wood or other statically stable compressible swellable material, wherein the outer surface to improve the Aufquellfähigkeit at several points by Einsch envy, preferably in the form of Ringfräsungen, is destroyed and in which both end faces are each designed to facilitate destruction of the flexible sheath tapering or each have a tip.

Characteristic of the known technical solutions

In an already known fastener, the swelling capability is improved by compressing the cylindrical blank made of wood or other statically stable swellable material and by destroying the outer surface, preferably by cutting in annular cuts. Thus, with a wooden dowel by cutting the end grain leaves exposed, which is known to be less resistant to moisture penetration. In the known connecting element, a tongue and groove connection is present after curing of the adhesive between the connecting element and the chipboard or the wooden plate. The spring is in this case formed by the chipboard or the wood, said spring being adapted to the annular groove of the connecting element. The spring of the chipboard is caused by swelling of the chipboard due to the absorption of the moisture of the adhesive. Particularly advantageous are the known Verbindungselemte in conjunction with a glue bead, in which an adhesive is hermetically enclosed in a destructible sheath used.

The production of invisible bonds using hermetically sealed in a flexible shell adhesive has proven particularly in furniture. Experts appreciate the problem-free introduction of the filled with adhesive flexible sleeves in the cylindrical drill and the associated advantages, in particular the clean introduction of the adhesive in time independence from the production of the actual compound of the parts. For joint-tight connection of the items of a furniture body, a locking device is required, which is generally formed by a press or ferrules. Such presses or clamps are required until the compounding effect between the connecting element and the flat parts occurs.

Object of the invention

It is an object of the invention to provide a connection in particular for furniture without additional aids, which is more durable and less expensive than the previously known compounds.

Explanation of the essence of the invention

The invention has for its object to provide a compound of flat Teiitn, especially in furniture made of wood or wood-like material, using adhesive and a connecting element in which the adhesive hermetically enclosed in a flexible shell and the shell with the enclosed adhesive as an independent part having approximately cylindrical shape with a frontal cover, in the cylindrical drill erasers of the parts to be joined is clamped introduced there introduced and in which the connecting element for invisible connection in the bores can be driven or pressed and has pressed on the outer surface or cut profiles, and formed from a cylindrical blank of wood or other statically stable compressible swellable material compressed to a predetermined extent, wherein the outer surface is adapted to improve the swellability of a plurality of Sites by cutting, preferably in the form of Ringfräsungen, is destroyed and in which both end faces are each designed to facilitate destruction of the flexible'n sheath each pointed or each have a tip to reach without the use of pressing or forcing and a connecting element of the indicated genus in such a way that the swelling ability is significantly increased while increasing the bonding effect between the wall of the cylindrical bore hole and the connecting element and the release of the adhesive from the introduced into the cylindrical holes of the parts to be joined sheaths of the indicated genus is facilitated. According to the invention, this object is achieved in that in the connecting element on both sides of the end faces of each one

Frontal cover of the independent parts one or more predetermined breaking point (s), wherein the rotary member for producing a tight locking connection by a cylindrical cross section with arranged on the outside of the shell projecting profiles and on the mantle upright head surface, a recess for engagement of an auxiliary tool has, is characterized.

Advantageously, two transverse bores are arranged at right angles to one another at the end of a longitudinal bore.

In an embodiment of the invention, the existing on the front side tip is cut by a longitudinal bore.

Conveniently, the transverse bores begin and end in the ring milling.

On the front sides can ever be arranged an outer annular fold.

It is advantageous if the front cover of the adhesive-filled flexible sheath has one or more predetermined breaking point (s).

It is inventively possible to form the predetermined breaking points by scribing or punctiform depressions, which are formed linear or circular running.

Expediently, the incisions and depressions extend over approximately V3 of the thickness of the end cover.

In a further embodiment, the profilings of the rotary element in cross section may form a sprocket or a ring gear or be formed by individual teeth, cams or the like.

In the context of the invention, it is to arrange the teeth, cams or the like symmetrical or asymmetrical.

In an embodiment of the invention, the profilings are formed on the outside of the shell corresponding to the formation of the cylinder jacket of the connecting element.

It is advantageous if the top surface protrudes beyond the shaft and is designed to cover the cylindrical bore.

Conveniently, the adjoining the top surface of the jacket is designed differently from the remaining part of the shell.

Preferably, the connection part has a toothing whose teeth are directed against the direction of rotation of the rotary element

It is also advantageous to form the recess in the head surface as a slot, cross slot or polygonal.

Advantageously, the foot is pointed running or provided with a tip.

A further embodiment provides to cover the top surface by a cap, which is in the recess of the head surface

_verancherbarist_: .......

In a compound of planar parts according to the invention using a connecting element and a rotary member, the cylindrical bore for the rotary member is arranged at right angles and offset from the cylindrical bore for the connecting element, that while the cylindrical bore for the connecting element is cut.

Conveniently, the lower limit of the bore for the rotary member is outside the bore for the connecting element.

In the context of the invention, it is when the bore for the rotary member abuts the bore for the connecting element approximately in its half hole depth.

Advantageously, the outside of the jacket of the connecting element is designed to correspond to the outside of the jacket of the rotary element.

Preferably, one or more anchoring elements, for example two opposing anchoring elements, are arranged on the underside of the cover surface of the covering cap.

In an embodiment of the invention, the anchoring elements are wedge-shaped in cross-section with downwardly directed tip and arranged strip-shaped running.

It is advantageous if the anchoring elements extend from the web to close to the outer edge of the lid surface.

It is possible to form the anchoring elements by pins.

In the context of the invention, it is when the web widens conically from the free end to the top surface.

Expediently, corresponding clamping ribs are arranged on the outside of the web to form the recess in the head surface.

The arrangement of the longitudinal and transverse bores absorbs the moisture of the adhesive from a much larger interior surface of the connector, resulting in a faster and more extensive swelling which remains after the adhesive has cured. However, the longitudinal and transverse bore not only contributes substantially to the extent to improve the swelling of the connecting element, but especially for improved distribution of the adhesive over the entire length. The adhesive penetrates into the longitudinal bore open at the end faces and emerges from the connecting element again through the transverse bores at at least two points of a ring milling. As a result, an essential part of the existing from the destroyed glue bead in the hole existing adhesive, which is yes, initially only in front of the front page, distributed over the length of the connecting elements. The faster and more uniform distribution of the adhesive contributes significantly to improving the bonding effect. The inventive construction of a compound using a Drehclementes for producing a lock makes it possible to achieve a completely tight locking in the invisible connection of parts using a cylindrical connecting element, even without the use of presses or clamps. Particularly advantageous is the invention for the tight locking of flat parts in furniture.

The proposed rotary member may serve to lock any cylindrical connecting element, which depending on the determination, a detachable or non-detachable connection with any type of adhesive insertion is possible. The invention is particularly suitable for the assembly of flat parts in furniture by the handyman, which in the cylindrical holes for the connecting element already factory are placed in the borehole jamming glue beads. Likewise, the cylindrical bores required for the rotary element are already introduced into the flat parts at the factory. It is not necessary for the production of a completely tight locking connection, that each connecting element is attracted by the rotary element according to the invention. For special cases, a detachable connection is possible in which the connecting element is tightened and locked on both sides by the rotary element. The rotating element can be made of any materials. Particularly advantageous is a material which is harder than the usually used for the connecting element for application beech wood. By arranging one or more predetermined breaking point (s) in the frontal cover of the flexible shell, the destruction of the shell in the cylindrical borehole and thus the release of the adhesive during insertion of the connecting element is facilitated and accelerated.

embodiment

The invention will be explained below with reference to exemplary embodiments. In the accompanying drawing show:

Fig. 1: a view of a rotary member;

FIG. 2 is a plan view of a top surface; FIG.

Fig. 3: a variant of FIG. 2;

4 shows a variant of FIG. 2;

5 shows a section through a rotary element;

Fig. 6: a variant of FIG. 5;

Fig. 7: a variant of FIG. 5;

8 shows a section through the connection valve of the top surface;

Fig. 9: side views of various Fußausbildungen;

10 is a view of a variant of the head training;

11 shows a view of two flat furniture parts before assembly; ,

12 is a view of two interconnected and locked flat furniture parts; FIG. 13 shows a plan view of two interconnected flat furniture parts; FIG. Fig. 14a u. b: two different shell developments of fasteners; FIG. 15 shows a section through the contact surface between a connecting element and a rotary element; FIG. FIG. 16 is an isometric view of a flexible envelope filled with adhesive and provided with an end cover; FIG.

FIG. 17 shows a section through an envelope according to FIG. 16; FIG.

FIG. 18 is an isometric view of an end cover with a variant of a predetermined breaking point; FIG. Fig. 19: a variant of FIG. 18; FIG. 20 shows a further variant of FIG. 18; FIG. FIG. 21 is a longitudinal view of a connecting element; FIG.

Fig. 22: a longitudinal view of a part of a connecting element, rotated by 90 ° with respect to the view of Fig. 21; FIG. 23: an end view of a connecting element; FIG. Fig. 24: a longitudinal section through one piece introduced into a cylindrical borehole connecting element with

schematic representation of the glue flow in the holes; Fig. 25 is a bottom view of a cap for a rotary member; Fig. 26: a side view of a cap and Fig. 27: another side view of a cap.

On the outside of the jacket of the cylindrical rotary element 1, longitudinal profiles are arranged, which, according to FIG. 5, form a sprocket ring 7 in cross-section and a wave-toothed ring 8 according to FIG. It is also possible, the profiles symmetrical or asymmetrical in the form of teeth 9, see. Fig. 7, or in another form, for. B. as a cam to arrange. In order to carry out the rotational movement of the pressed into the cylindrical bore 5 of the bottom part 4 to be connected or punched rotary element 1, the top surface of the rotary member 1 has a suitable recess for engagement of an auxiliary tool, for. B. a screwdriver. According to FIG. 2, the top surface is designed as a slot 10 and, according to FIG. 3, as a cross slot 11. Another variant of the embodiment is shown in FIG. Here, the polygonal recess is denoted by 12.

As can be seen from Fig. 11, in a side part 3 of a furniture body in a cylindrical bore 6, a connecting element 2 is firmly glued. This side part 3 is pressed or taken with the protruding part of the connecting element 2 in the cylindrical bore 6 of the bottom part 4 of the furniture body. It is not possible, without the use of additional aids, to achieve a completely tight joint between the side part 3 and the bottom part 4 as a result of this impressions or hammering in. To produce a sealed locking connection, the rotary element 1 inserted into the bore 5 of the base part 4 to be connected, which bears against the connecting element 2 and pulls the glued-in connecting element 2 with the side part 3 without problems in the direction of the bottom part 4 when rotating movements. For this purpose, the cylindrical bore 5 for the rotary member 1 is perpendicular and offset from the cylindrical bore 6 for the connecting element 2, that while the cylindrical bore 6 is cut for the connecting element 2, expediently approximately at half the borehole depth. The lower boundary of the bore 5 for the rotary element 1 is located outside the bore 6 for the connecting element. In this arrangement, the bores 5 and 6, the contact surface 16 shown in Fig. 15 between the inserted rotary member 1 and the inserted connecting element formed in Fig. 9 a to 9 d are various ways of forming the foot 15 of the rotary member 1 is shown. In Fig. 9a is a straight and bevelled training, in Fig.9b a chamfered training, in Fig.9c a rounded training and in Fig.9d a chamfered training with a tip shown.

In the rotary element 1 shown in Fig. 1, a connection part 13 is shown adjacent to the top surface with the slot 10 for introducing an auxiliary means for rotating, which has a toothing 14. The teeth of this toothing are directed against the Drehric.htung of the rotary member 1, so that a turning back and thus a withdrawal of the connecting element 2 from the cylindrical bore 6 is hardly possible.

In a particular embodiment, the outside of the shell of the connecting element has a corresponding to the outside of the shell of the rotary member training. Thus, in Fig. 14a, the jacket processing suitable for the sprocket ring 7 of FIG. 5 and in Fig. 14b to the shaft gear ring 8 shown in Fig.6. In order to facilitate the destruction of the introduced into the holes 5 and 6 glue beads, 2 tips are arranged on the end faces of the connecting element.

In Fig. 10, a rotary member 1 is shown with a projecting over the shaft head face for covering the cylindrical bore. In general, however, the head of the rotary member 1 is flush with the outer surface of the connected file 4.

The rotary element 1 and the connecting element 2 may consist of any material suitable for the intended use. The profiles of the lateral surfaces can be arranged over the entire length or only on a part of the rotary and the connecting element.

The flexible cylindrical shell 19 has a front-side welded-on cover 18, so that the introduced adhesive 20 is hermetically enclosed in the shell 19. The end cover 18 has, according to FIG. 16, two circular predetermined breaking points 21 in the form of indentations, the depth of which corresponds approximately to V3 to ² h to the thickness of the cover 1, cf. Fig. 17. In Fig. 18, the predetermined breaking point 21 is formed by a designed as a line incision, while in Fig. 19, the predetermined breaking points 21 have a cross shape. If predetermined breaking points 21 in the form of line-shaped scratches are arranged on the flexible film intended to form the cover 18, it depends on the spacing of these linearly extending scratches whether one or more scribings are arranged on the cover 18 welded to the cover 19. Thus, Fig. 20 shows a cover 18 with a plurality of parallel predetermined breaking points 21 in the form of linearly extending Einritzungen. The predetermined breaking points 21 shown in Fig. 16 may also be arbitrarily arcuate running.

The connecting element 2 is known to have a respective tip 17 on the end faces and arbitrary profiles 28 on the outer face. A longitudinal bore 22 is introduced on both sides from the ends of which a transverse bore 23 is arranged, which begins and ends in the annular milling 24. If more than one annular milling 24 are mounted on each half of the connecting element 2, then the longitudinal bore 22 extends correspondingly, it being readily possible to arrange two transverse bores 23 for each annular milling 24. For two ring milling 24 z. B. a total of four transverse bores 23 may be present. In practice, it has been shown that a ring milling 24 with a transverse bore 23 is sufficient to produce a sufficient bonding effect.

The longitudinal bore 22 is set so that the tip 17 is cut so that, as can be seen from Fig. 23, along the top 17 two sharp edges 26 result. These cutting edges 26 contribute to a better and easier destruction of the glue bead sheath 19.

The empty glue bead sheath 19 is, as shown in Fig. 24, taken up substantially by the outer annular fold 25 and pressed against the end face 27 of the borehole. The glue bead sheath 19 thus does not hinder the distribution of the adhesive 20 on the outer surface of the connecting element 2. FIG. 24 shows a schematic representation of the glue flow in the longitudinal bore 22 and the transverse bore 23. If the connecting element 2 is further printed on the end face 27 of the borehole, then part of the adhesive 20 released from the glue bead is led via the bores 22 and 23 and a further part directly onto the outer surface of the connecting element 2.

The cap for the rotary member 1 consists of a web 29 and a lid surface 30 arranged perpendicular thereto. On the outside of the web 29, four clamping ribs 31 are arranged, which correspond to the recesses 11 formed in the head surface of the rotary element 1. On the underside of the lid surface 30 two strip-shaped anchoring elements 32 are arranged, which extend in a wedge-shaped cross-section, wherein the tip 33 faces away from the lid surface 30. As can be seen from FIG. 26, the anchoring elements 32 extend from the web close to the outer edge of the lid surface 30, ie. h., The anchoring elements 32 are covered by the lid surface 30. The web 29 widens conically from the free end to the cover surface 30.

By the present invention arranged anchoring elements 4, which after insertion of the cover in the recess of the head surface of the rotary member 1 outside the cylindrical bore hole 6 for the rotary member 1 in the Holzbzw. The cover surface 30 covers the anchoring elements 4 completely, so that in the inserted state of the cap no anchoring elements 4 are visible.

Claims (38)

- ι - ι «*« / w ι Invention claim: 1. Connection of flat parts, especially in furniture made of wood or wood-like material, using adhesive and a connecting element, in which the adhesive hermetically enclosed in a flexible shell and the shell with the enclosed adhesive as an independent part, the approximately cylindrical shape with a frontal cover, in which cylindrical boreholes of the parts to be joined is clamped introduced introduced and in which the connecting element for invisible connection in the bores can be driven or pressed and pressed on the outer surface or cut profiles, and formed from one of a compressed by a predetermined amount cylindrical blank made of wood or other statically stable compressible swellable material, wherein the outer surface to improve the Aufquellfähigkeit at several points by cutting, preferably is in the form of Ringfräsungen, destroyed and in which both end faces are each designed to facilitate destruction of the flexible sheath pointy or each have a tip, characterized in that in the connecting element (2) on both sides of the end sides of a respective longitudinal bore (22 ) is introduced, at the ends of one or more continuous transverse bores (23) are arranged. 2. Connection according to item 1, characterized in that at the end of a longitudinal bore (22) two transverse bores (23) are arranged perpendicular to each other extending. 3. Connection according to item 1 or 2, characterized in that the existing on the front side tip (17) is cut by a longitudinal bore (22). 4. Connection according to one of the items 1 to 3, characterized in that the transverse bores (23) in the Ringfräsungen (24) begin and end. 5. A compound according to any one of items 1 to 4, characterized in that an outer annular fold (25) is arranged on the end faces. 6. The compound according to item 1, characterized in that the end-side cover (18) of the adhesive-filled (20) flexible sheath (19) one or more sollbruchstelle (s) (21). 7. compound according to item 6, characterized in that the predetermined breaking points (21) are formed by scribing. 8. compound according to item 6, characterized in that the predetermined breaking points (21) are formed by punctiform depressions. 9. compound according to item 7 and 8, characterized in that the predetermined breaking points (21) in the form of scratches or depressions are formed linear or circular running. 10. A compound according to any one of items 7 to 9, characterized in that the scribes and the recesses extend over approximately V3 of the strength of the end cover (18). 11. A compound according to the preamble of item 1 using a rotary member for producing a lock which is insertable into a cylindrical borehole of the part to be connected, characterized by, a cylindrical cross-section with arranged on the outside of the shell projecting profiles and on the jacket vertically Head surface having a recess for engagement of an auxiliary tool. 12. compound according to item 11, characterized in that the profilings in cross section form a sprocket (7). 13. Connection according to item 11, characterized in that the profiles in cross-section form a shaft gear rim (8). 14. Connection according to item 11, characterized in that the profilings are formed by individual teeth (9), cams or the like. 15. A compound according to item 14, characterized in that the teeth (9), cams or the like are arranged symmetrically. 16. A compound according to item 14, characterized in that the teeth (9), cams or the like are arranged asymmetrically. - - - 17. A compound according to any one of items 11 to 16, characterized in that the profilings are formed on the outside of the shell corresponding to the formation of the cylinder jacket of the connecting element (2). 18. A compound according to any one of items 11 to 17, characterized in that the head surface protrudes beyond the shaft and is designed to cover the cylindrical bore (5). 19. A compound according to any one of items 11 to 18, characterized in that the adjoining the top surface of the jacket is designed differently from the remaining part of the shell. 20. A compound according to item 19, characterized in that the connecting part (13) has a toothing (14) whose teeth are directed against the direction of rotation of the rotary element (1). 21. A compound according to any of items 11 to 20, characterized in that the recess in the head surface as a slot (10) or Phillips (11) is formed. 22. A compound according to any of items 11 to 20, characterized in that the recess in the head surface is formed polygonal (12). 23. Connection according to one of the items 11 to 22, characterized in that the foot (1 δ) bevelled or chamfered or rounded. 24. A compound according to any one of items 11 to 22, characterized in that the foot (15) is formed pointed or provided with a tip. 25. A compound according to any of items 11 to 24, characterized in that the head surface is covered by a cap. 26. The compound according to item 25, characterized in that the cap is anchored in the recess of the head surface. 27. The compound according to item 25, characterized in that the cap is anchored in a separate recess of the head surface. 28. The compound of flat parts using a connecting element and a rotary member according to one of the points 11 to 27, characterized in that the cylindrical bore (5) for the rotary member (1) at right angles and so offset from the cylindrical bore (6) for the connecting element (2) is arranged, that while the cylindrical bore (6) is cut for the connecting element. 29. A compound according to item 28, characterized in that the lower boundary of the bore (5) for the rotary member (1) outside the bore (6) for the connecting element (2). 30. The compound according to item 28 or 29, characterized in that the bore (5) for the rotary member (1) the bore (6) for the connecting element (2) approximately in its half hole depth appeals. 31. A compound according to item 28, characterized in that the outer side of the jacket of the connecting element (2) is formed corresponding to the outside of the jacket of the rotary element (1). 32. The compound according to item 25 and 26, characterized in that on the underside of the lid surface (30) of the cap one or more anchoring elements (32) are arranged. 33. The compound according to item 32, characterized in that two opposing anchoring elements (32) are arranged. 34. The compound according to item 32 or 33, characterized in that the anchoring elements (32) are wedge-shaped in cross-section with downwardly directed tip and arranged to extend in a strip shape. 35. A compound according to any one of items 32 to 34, characterized in that the anchoring elements (32) from the web (29) to close to the outer edge of the lid surface (30) extend. 36. The compound according to item 32 or 33, characterized in that the anchoring elements (32) are formed by pins. 37. A compound according to any of items 32 to 36, characterized in that the web (29) widened conically from the free end to the lid surface (30). 38. Connection according to one of the points 32 to 37, characterized in that on the outside of the web (29) to the shape of the recess in the head surface corresponding clamping ribs (31) are arranged. For this 8 pages drawings