JPS60237213A - Joint of flat plate part in furniture - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a joint for joining flat parts made of wood or similar materials, especially in furniture, using an adhesive and a joining member. In this case.

The adhesive is hermetically sealed within a flexible envelope.

This jacket is constructed so that it can be inserted, together with an enclosed adhesive, into a cylindrical hole in the plate parts to be joined, as a separate, generally cylindrical member having a lid at one end, with the aid of a clamping action. There is. The connecting element can also be driven or pushed into the drilled hole for an invisible connection and has a contoured profile formed by coining or cutting on its outer surface; It is made of a cylindrical material made by compressing a compressible swellable material with static stability to a certain degree, and the outer surface of this joining member is cut in the form of ring-shaped cutting grooves in many places to improve swelling properties. The end faces of the connecting member are either at an acute angle for easy rupture of the flexible jacket, or each end face is interrupted by a
It has two pointed ends.

PRIOR ART In the case of known connecting elements of this type, their expansibility is determined by compression of a cylindrical material made of wood or another statically stable swellable material and also by interruptions in the outer surface, in particular by incisions in ring-shaped cutting grooves. Improved. For example, in the case of buried wood, the so-called butt end, which has low moisture resistance, is removed by making incisions, as is well known.

In this known connecting element, a key groove connection is formed between the connecting element and the particle dart or plate after the adhesive has hardened. The key is in this case formed by a particle dart or plate and fits into the ring groove of the coupling member. The key to this particle dart is
It is formed by the swelling of the particle itself due to the absorption of moisture by the adhesive. Such known coupling members include:
Particularly advantageous use can be made by using glue granules that are hermetically sealed in a breakable jacket.

It is particularly advantageous in furniture to use an adhesive hermetically encapsulated within a flexible jacket to form an externally invisible connection. In this case, the problem-free insertion of the adhesive-filled flexible jacket into the cylindrical hole and the advantages associated with this, in particular the fact that the adhesive can be applied temporally independently of the actual connection of the flat plate parts to each other, It is praised for being able to be inserted without making a mess.

In order to tightly connect the individual flat parts on the outside of the furniture, locking devices are necessary, which locking devices are generally constituted by presses or flanges. Such a press or flange is necessary until a bond between the connecting member and the plate part occurs.

OBJECTS OF THE INVENTION It is an object of the invention to ensure a tight locking connection between structural parts, such as flat parts in furniture, without the use of presses or flanges.

In the type of connecting element described above, the swelling property is significantly increased as it strengthens the bonding action between the inner wall of the cylindrical hole and the connecting element, and the swellability of the cylindrical hole of the structural parts to be connected to each other is increased. The purpose is to facilitate the release of the adhesive from the inserted jacket of the type described.

Means for Solving the Problem This problem has been solved by the present invention in a joint of the type mentioned at the outset as follows. That is, one vertical hole is formed in the coupling member from each end thereof, and at least one horizontal hole is formed at the end of this vertical hole. The lid at the open end of the jacket as a separate component has at least one predetermined rupture point. In addition, in order to form a tight locking joint, a pivoting member that can be inserted into a hole in the flat plate part has a cylindrical cross section, and is connected at one end to a deformed Zorofil with a protruding profile on the outer circumferential surface. The head has a protruding head, and a recess is formed in the head for engaging an auxiliary tool.

Operation and Effects Due to the formation of the longitudinal and transverse holes, the water content of the adhesive is absorbed into the significantly larger inner surface of the joining part, which results in a correspondingly rapid and sufficient swelling, which swells out of the adhesive. It remains intact even after curing. The longitudinal and transverse holes not only greatly assist in improving the swelling of the bonding member, but also improve the distribution of the adhesive over the length of the bonding member. The adhesive enters vertical holes opened at both ends of the joining member, and exits from the joining member through at least two of the ring-shaped cutting grooves through the horizontal holes.

In this way, most of the adhesive in the holes made of crushed glue grains, ie the adhesive initially located mostly in front of the ends of the joining element, is distributed over the entire length of the joining element. Rapid and uniform distribution of adhesive helps greatly improve bonding performance. According to the construction of the joint of the present invention using a pivoting member for locking, the invisible connection between the flat plate parts using the cylindrical connecting member can be completely completed without using a press or a flange. Close locking is possible. The invention is particularly advantageous for the close interlocking of flat parts in furniture.

The pivoting member according to the invention can be used to lock any cylindrical coupling member and, depending on the application, can be removably or non-removably coupled with any type of adhesive supply. be. The invention is particularly suitable for joining flat parts of furniture by the cottage industry. This is because, in the case of cottage industry, the flat plate parts are delivered already in the factory with glue grains filled into the cylindrical holes for the connecting parts. Further, the cylindrical hole necessary for the rotating member is already formed in the flat plate part at the factory. In this case, it is not necessary for each coupling member to be tightened by the pivot member to form a completely tight locking connection. A removable connection is also possible for special cases.

In this case, the coupling member is tightened from both sides by the rotating members and held in position. The pivot member can be made from any material. Particularly advantageous materials include materials that are harder than the beech wood customarily used for connecting members.

One or more predetermined rupture points are formed in the lid at the open end of the flexible jacket, so that the breakage of the jacket in the cylindrical drilling hole and thus the insertion of the coupling element is prevented. Release of adhesive becomes easier and faster.

Embodiment A cylindrical rotating member 1 has an irregularly shaped profile extending in the vertical direction on its outer circumferential surface, and this irregularly shaped profile has a fifth shape.
According to the illustrated embodiment, the cross section forms an acute rim 7;
According to the embodiment of FIG. 6, the cross section forms a corrugated rim δ. The profile profile can also be arranged symmetrically or asymmetrically in the form of teeth 9 or in other shapes, such as cam projections, as shown in the embodiment of FIG. In order to be able to impart a pivoting movement to the pivoting member 1 which has been pushed or driven into the cylindrical bore of the flat plate part to be connected, the head of the pivoting member l is fitted with a screwdriver, for example. It has a suitable recess for engaging an auxiliary tool. In the embodiment according to FIG. 2, this depression is designed as a slit 10, and in the embodiment according to FIG. 3 it is designed as a cross slit 11. Another example of this recess is shown as a polygonal recess at 12 in the embodiment of FIG.

As shown in FIG. 11, a coupling member 2 is immovably adhesively fixed within a cylindrical hole 6 in a side plate 3 of the outer frame of the furniture.

The protruding portion of the connecting member 2 of the side plate 3 is connected to the cylindrical hole 6 of the bottom plate 4.
pushed or driven in. By means of this pressing or driving alone, i.e. without additional auxiliary means, it is not possible to form a completely tight seam between the side panel 3 and the bottom panel. In order to form a tight locking connection, a pivoting element 1 inserted into a drilling hole 5 in the bottom plate serves (FIGS. 12 and 13). This rotating member 1
contacts the coupling member 2, and with one rotation movement, the side plate 3 is tightened to the bottom plate 4 without any problem via the adhesively fixed coupling member 2.

For this purpose, the cylindrical hole 5 for the rotating member 1 is formed perpendicularly and shifted from the cylindrical hole 6 for the coupling member 2, so that the cylindrical hole 5 for the rotating member 1 is formed at a right angle to the cylindrical hole 6 for the coupling member 2, so that the cylindrical hole 5 for the rotating member 1 is formed at a right angle to the cylindrical hole 6 for the coupling member 2. They partially overlap in places.

The lower edge of the cylindrical hole 5 for the rotating member 1 is the cylindrical hole 6 for the coupling member.
It is located outside of. With this arrangement of the cylindrical holes 5, 6, a contact surface 16 shown in FIG. 15 is created between the inserted pivot member 1 and the coupling member 2.

9a to 9d show various embodiments of the leg end 15 of the pivoting member 1. In FIGS. The example of FIG. 9a is a leg end 15 cut diagonally, the example of FIG. 9b is a chamfered leg end 15, the example of FIG. 9C is a leg end 15 that is rounded into a spherical shape,
The example of FIG. 9d has a leg end 15↑ which is chamfered and has a pointed end.

In the case of the pivoting member 1 shown in FIG. 1, a connecting part 13 with a tooth profile 14 is provided following the head with a slot 10 for inserting an auxiliary tool for pivoting. The individual teeth of this tooth profile 14 are oriented in a direction opposite to the direction of rotation of the rotary member 10, so that a return rotation and therefore a falling out of the coupling member 2 from the cylindrical hole 6 is impossible.

According to a special embodiment, the outer circumferential surface of the coupling element has a contour adapted to the outer circumferential surface of the pivoting element. For example, No. 14a
The figure shows a developed view of the circumferential surface that fits the acute rim 7 of FIG. 5, and FIG. 14b shows a developed view of the circumferential surface that fits the corrugated rim 8 of FIG. In order to facilitate the crushing of glue grains inserted into the cylindrical holes 5, 6, points 17 are arranged at both ends of the coupling member 2.

FIG. 10 shows a pivoting member 1 with a head extending from the shaft for closing the cylindrical bore 5. In FIG. However, normally the head of this rotating member 1 is aligned with the outer surface of the flat plate part 4 to be joined.

The pivot member 1 and the coupling member 2 can be made of any material suitable for the application. The contoured profile of the outer circumferential surface can be formed either over the entire length of the pivoting element and the coupling element or only over a part thereof.

As shown in FIGS. 16 and 17, the flexible cylindrical jacket 19 has a lid 18 fused to the end, which seals the interior adhesive 20. It is enclosed. This lid 18 has a ring-shaped planned breaking point 2.
1, and this planned breaking point 21 has a depth of approximately one-third to two-thirds of the thickness of the lid 18.

According to the example shown in FIG. 18, the planned breaking point 21 is a single straight line, and according to the example shown in FIG. 19, it is a cross-shaped line. When the flexible thin piece for forming the lid 18 is formed with a plurality of linear striations, the striations determine whether the lid 18 has a single or plurality of planned rupture points 21. related to their mutual spacing. FIG. 20 shows a lid 18 with two planned break points 21 consisting of two parallel linear striations. The planned breakage point 21 shown in FIG. 16 does not have to be a concentric ring as shown.

As shown in FIG. 21, the coupling member 2 has a tip 17 at each end of the well-known aperture 9 and an optional profile 28 on its outer circumference. 1 each from both end faces
Two vertical holes 22 are formed, and one horizontal hole 23 is formed at the inner end thereof. The transverse hole 23 starts at one location of the ring-shaped cutting groove 24 and ends at the opposite groove location 1 (FIG. 22). If two ring-shaped cutting grooves 24 are formed in both halves of the coupling member 20, the vertical holes 22 are also extended accordingly, and two horizontal holes are formed attached to each cutting groove. . In this case, a total of four lateral holes will be formed. In practice, it has been found that one ring-shaped cutting groove 24 and one transverse hole 23 are sufficient to obtain the required joining effect.

The vertical hole 22 has a tip 17, as shown in FIG.
The tip 17 is partially cut out, thereby forming two sharp edges 26 along the tip 17. These edges 26 serve for a better and problem-free breaking of the glue extra-particle waves 19.

After the release of the glue grains upon breakage, the jacket 19 is received in the turning 25 and crimped against the inner end 27 of the cylindrical bore, as is implicitly shown in FIG. In short, outer covering 19
does not impede the distribution of the adhesive onto the outer surface of the joining member 2. The glue flow inside the vertical hole 22 and the horizontal hole 23 is schematically shown in the second Φ diagram. When the coupling member 2 is further pushed towards the inner end 27 of the cylindrical hole as seen in the figure, a part of the adhesive 20 filled in the form of glue grains passes through the vertical hole 22 and the horizontal hole 23, A portion is guided directly to the outer circumferential surface of the coupling member 2, respectively.

As shown in FIGS. 25, 26 and 27, the closure cap of the pivoting member 1 consists of a web 29 and a lid surface 30 at right angles to this web 29. The outer surface of the web 29 is provided with four clamping ribs 31 which fit into recesses in the form of head cross grooves 11 of the pivoting member 1 . Two strip-shaped anchoring pieces 32 are provided on the lower side of the lid surface 30, and these anchoring pieces 32 have a wedge-shaped cross section, and their pointed ends 33 are opposite to the lid surface 30. facing. As shown in FIG. 26, the anchor piece 32 extends reeded from the web 29 near the outer edge of the lid surface 30, and is essentially hidden beneath the lid surface 30. The web 29 is enlarged circularly from its free end to the lid surface 30.

The anchoring piece 32 can be driven in after the closure cap has been inserted into the recess in the head of the pivot member 1, so that the closure cap and thus the pivot member 1 are fixed in position. Lid surface 3
0 completely covers the anchor piece 32, and the anchor piece 32 is not visible from the outside when the closing cap is installed vertically.

[Brief explanation of drawings]

FIG. 1 is a side view of the rotating member, FIGS. 2, 3, and 4 are plan views showing embodiments of the head of the rotating member, and FIGS. 5, 6, and 7. are cross-sectional views of various types of rotating members, FIG. 8 is a cross-sectional view of the connecting portion of the head of the rotating member, and FIG.
Figures a and 9b, Figures 9c and 9d are all side views showing the leg ends of various types of rotating members, and Figure 10 is a side view showing variations of the head of the rotating member. Fig. 11 is a plan view showing the two flat plate parts before joining, Fig. 12 is a plan view showing the two flat plate parts in the locked position, and Fig. 13 is a plan view showing the two flat plate parts in the locked position.
14a and 14b are both developed views showing the outer peripheral surface of the coupling member, FIG. 15 is a sectional view showing the contact surface between the coupling member and the rotating member, and FIG. 16 is a perspective view of the envelope filled with adhesive, and Figure 17 is the first
6 is a vertical cross-sectional view of the outer cover, and FIGS.
Fig. 1 is a side view of the entire coupling member, Fig. 22 is a side view showing a part of the coupling member in Fig. 21 rotated by 90 degrees, and Fig. 23 is a side view of the entire coupling member.
The figure is an end view of the coupling member shown in Fig. 21, Fig. 24 is a sectional view showing the coupling member inserted with adhesive into the cylindrical hole of one flat plate part, and Fig. 25 is a closure for the rotating member. Bottom view of the cap, Figure 26 is a side view of the closure cap, Figure 27.
The drawing is a side view of the closure cap of Fig. 26 rotated 90 degrees.

Claims (1)

[Claims] 1. A joint of flat plate parts made of wood or similar material, using an adhesive (20) and a connecting member (2),
The adhesive (20) is hermetically encapsulated within a flexible jacket (19), the jacket (19) containing the encapsulated adhesive (20).
It is also constructed so that it can be inserted as a substantially cylindrical independent member with a lid (18) at one end into a cylindrical hole in the flat plate parts (3, 4) to be joined under the action of a clamp. The connecting element (2) can be driven or pushed into the drilled hole for an invisible connection from the outside and has a contoured profile (28) formed by coining or cutting on its outer surface. The connecting member (2) is made of a cylindrical material made of wood or another statically stable compressible swellable material compressed to a certain extent, and the outer surface of this connecting member (2) is made of wood or another statically stable compressible swellable material. are interrupted at many points by cuts such as ring-shaped cutting grooves (24), and the ends of the coupling member (2) each form an acute angle for easy breakage of the flexible jacket (19). of the type having a tip (17) or one tip (17), the coupling member (
2) is characterized in that one vertical hole (22) is formed from each end face, and at least one horizontal hole (23) is formed at the end of these vertical holes (22), Joint of flat plate part. 2. Two horizontal holes (23) are formed at right angles to each other at the end of the vertical hole (22). A joint according to claim 1. 3. The tip (17) provided on the end face has one vertical hole (22
), the joint according to claim 1 or 2, wherein the joint according to claim 1 or 2 is partially omitted. 4. The transverse hole (23) starts from a ring-shaped cutting groove (24) and ends at the same cutting groove (24), according to any one of claims 1 to 3. joint. 5. The joint according to any one of claims 1 to 4, wherein a ring-shaped turning part (25) is formed at each end of the coupling member (2). 6. Flexible jacket (19) filled with adhesive (20)
The lid (18) at the open end of has at least one predetermined break point (21). A joint according to claim 1. 7. The joint according to claim 6, wherein the planned breaking point (21) is formed by a striation. 8. The joint according to claim 6, wherein the predetermined rupture point (21) is formed by a dotted cavity. 9. The joint according to claim 8, wherein the planned rupture point (21) is formed linearly or annularly in the form of a striation or a cavity. 10. The striations or pits are about third of the thickness of the lid (18).
Claim 9 is formed over a depth of
Fittings listed in section. 11. Flat plate part (3i
A rotary member (1) can be inserted into one of the cylindrical holes of 4), and this rotary member (1) has a cylindrical cross section, and has an irregular profile protruding on the outer peripheral surface and one side. , and one head has a recess for engaging an auxiliary tool. A joint according to claim 1. 12. The irregular profile has the cross-sectional shape of an acute toothed rim (7). A joint according to claim 11. 13. Joint according to claim 11, wherein the profile profile has the cross-sectional shape of a corrugated rim (8). 14. Joint according to claim 11, wherein the profile is formed by individual teeth (9) or projections or the like. -15. Joint according to claim 14, in which the teeth (9) or projections etc. are arranged symmetrically. 16, the teeth (9) or protrusions etc. are arranged in an asymmetrical manner. The joint according to claim 14. 17. Joint according to any one of claims 11 to 16, wherein the profile corresponds to the shape of the cylindrical circumferential surface of the connecting member (2). 18. Claims 11 to 17, wherein the head of the rotating member (1) protrudes from the shaft and is configured to cover the cylindrical hole (5) in the flat plate portion. The joint described in any one of the above. 19. The joint according to any one of claims 11 to 18, wherein the portion of the circumferential surface that connects immediately after the inner head has a different shape from the other circumferential portions. 20, the connecting part (13) has a tooth profile (14),
The individual teeth of this tooth profile (14) are formed in a direction opposite to the rotating direction of the rotating member (1). Claim No. 19
Fittings listed in section. 21. The joint according to claim 1, wherein the recess in the head is a slit (10) or a cross slit (11). 22. The shape of the head is polygonal. Any one of claims 11 to 20
Fittings listed in section. 23. The O-leg end (15) of the rotating member (1) is diagonally cut or chamfered or rounded;
Any one of claims 11 to 22
Fittings listed in section. 24. Pivoting member (1) O-leg end (15) force 3 has an acute angle or is provided with a point. Claim 11
The joint described in any one of paragraphs 1 to 22. 25. The head of the pivoting member (1) is covered by a closure cap. A joint according to any one of claims 11 to 24. 26. The closure cap is locked in the recess of the head. The joint according to claim 25. 27. A joint according to claim 25, wherein the closure cap is locked in a cavity formed separately from the recess of the head. 28, the cylindrical hole (5) for the rotating member (1) is connected to the coupling member (
2), which are formed in a direction perpendicular to and offset from the cylindrical hole (6) for the connecting member (2), and partially overlap the cylindrical hole (6) for the coupling member (2). Range 11th
The joint described in any one of paragraphs 27 to 27. 29 The lower edge of the cylindrical hole (5) for the pivoting member (1) is located outside the cylindrical hole (6) for the coupling member (2). The joint according to claim 28. 30, the cylindrical hole (5) for the rotating member (1) is connected to the coupling member (
30. A joint according to claim 28 or 29, which partially overlaps the cylindrical bore (6) for (2) at approximately - part of its depth. 31. The outer circumferential surface of the coupling member (2) corresponds to the contour of the outer circumferential surface of the rotating member (1). The joint according to claim 28. 32. Coupling according to claim 26, in which at least one anchoring piece (32) is arranged on the underside of the lid surface (30) of the closure cap. 33. Joint according to claim 32, in which the two anchoring pieces (32) are arranged opposite each other. 34. The joint according to claim 32 or 33, wherein the anchorage piece (32) has a wedge-shaped cross section with an acute downward angle and is arranged in a strip-like manner. 35, the anchor piece (32) moves from the web (29) to the lid surface (30
) extends close to the outer edge of the area. Claim 32
The joint described in any one of paragraphs 34 to 34. 36. A joint according to claim 32 or 33, wherein the anchorage piece (32) consists of a bottle. 37. The web (29) is expanded into a conical shape from the free end to the lid surface (30). The joint according to any one of claims 32 to 36. 38. According to any one of claims 32 to 37, a tightening rib (31) adapted to the shape of the head recess is arranged on the outer surface of the web (29). joints.