JPS601412A - Invisible joint joining surface-shaped constitutional memberand manufacture of joining member of said joint - 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 The present invention is an invisible joint for joining planar components in furniture, especially made of wood or wood-like materials, using an adhesive and a bonding member, the joint being a liquid or a paste. the adhesive of the shape can be inserted into the cylindrical bore of the components to be joined, and the joining element can be driven or press-fitted into the bore on each side, and furthermore the joining element can be inserted with respect to the longitudinal solid axis. symmetrically constructed and having one or more longitudinally extending grooves and/or annular cutouts and/or further profiles on the outer surface, and both end faces of the connecting member are connected thereto as well as such a joint; The present invention relates to a method for manufacturing a coupling member in.

A large number of connecting elements are known for invisible joints for connecting planar components in furniture, for example for connecting a bottom part and a side wall of a furniture body at right angles. This joining element is introduced into a prepared cylindrical bore of the components to be joined. Before introducing the bonding member to increase the strength, a liquid or pasty medium having adhesive or adhesion properties and/or foaming properties is inserted into the cylindrical hole. Such insertion of adhesive is time consuming and must be done very carefully. Furthermore, it is unavoidable that the surface of the planar component becomes dirty. Furthermore, it would be necessary to accurately measure the amount of adhesive required for each hole, and this cannot be accomplished without expense. . The adhesive introduced into the perforation is introduced by the bonding member [7] in which case it is mostly pushed towards the end wall of the perforation and a portion is forced into the tick 0 board. There is no uniform distribution of adhesive over the entire length of the joining member. After the adhesive has been inserted, the joint must be manufactured in a relatively short period of time, since the adhesive will harden if it is not done in such a short period of time.

Specialized knowledge is required to manufacture the joint. Therefore, when assembling the furniture components later, for example after transporting the furniture components on pallets in order to save space, the adhesive agent can be used in conjunction with the connecting elements that can be introduced into the cylindrical boreholes. It is not possible to connect the planar components used; rather, a magnetically unproblematic magnetic connection is performed. Although this screw connection is satisfactory from a technical point of view, it is not aesthetically pleasing. This is because the screw connections are visible and thereby spoil the appearance of the furniture.

To obtain a tight fit, the diameter of the cervix is made slightly larger than the diameter of the borehole.

The connecting elements must be driven or press-fitted into the respective boreholes in order to achieve a reliable and completely tight connection between the components. I can't stand being pushed in.

The object of the present invention is to improve the method of the type mentioned at the outset, so that adhesives can be applied exactly as desired at low cost and without the risk of contaminating the surfaces of the components to be joined. can be introduced into the borehole in a controlled quantity, and the fabrication of the joint can be made temporally independent of the insertion of adhesive,
Furthermore, the adhesive can be evenly distributed over the entire length of the joining member,
Furthermore, it is an object of the present invention to be able to design the connecting element in such a way that a quick and reliable connection between the components is achieved without the need for press or percussion tools for installation in the borehole.

According to the present invention, the above-mentioned problem can be solved by having an adhesive tightly encapsulated within the covering, and the covering having the sealed adhesive being able to be inserted into the borehole as a member having a stable shape. The solution is that the sheathing is breakable when the connecting member is driven or press-fitted.

In an advantageous embodiment, the connecting member is formed from a cylindrical material of wood or another statically stable expandable material, compressed by a predetermined amount and with a ratio of 1 to 1 to the diameter of the borehole.
and has a small diameter.

In an embodiment of the invention, the covering is made of a flexible 1/l 0') material or of an easily breakable material, preferably glass. Further, preferred embodiments of the present invention are defined in claims 2, 4, 5, 6, 7, 8, 9, 10, 11, Section 13, Section 14
Section, Section 15, Section 16, Section 18, Section 19, Section 20
Section, Section 21, Section 22, Section 26, Section 24, and O.
Described in Section 25.

The adhesive tightly encapsulated within the cladding can advantageously be forced or blown into the cylindrical borehole immediately after the borehole has been produced. Flexibility σ) The outer diameter of the sheath is slightly larger than the diameter of the borehole, so that the flexible sheath is tightened after being inserted into the borehole. This provides an advantage when the adhesive can be inserted into the planar component independently of the actual fabrication of the joint.

The assembly of the components using the adhesive encapsulated in the cladding in conjunction with the connecting elements can be carried out very conveniently even by non-experts, for example by self-assembly.

The adhesive contained in the coating can be metered to the particular purpose and can be stored for a long period of several years. The sheath itself is destroyed when the connecting member is introduced into the cylindrical bore and the adhesive is thereby released.

By exposing the end of the cylindrical bonding member, which absorbs moisture relatively well, as is known, the expansion capacity of the wood or wood-like material and thus the bonding action is significantly improved.

Furthermore, the moisture contained in the adhesive is absorbed very quickly and the time for producing a fixed joint is thereby shortened. Due to the rapid expansion of the connecting element, no vibrations occur when the components are connected. Therefore, the occurrence of so-called hair cracks can be avoided. In addition, the bonding action is significantly accelerated and increased by the fact that the chimp board or wooden board of the furniture body absorbs some of the moisture of the adhesive (in the case of katsugo, it expands taking into account the predetermined 0 "ability"). The board bites into the annular notch, forming a so-called key. This keyway connection allows a large force to be transmitted.

Next, we will explain the illustrated embodiment.1. According to FIG. The adhesive provided within the shape θ) is pressed or blown into a stable part 7:). ”:” hid・(I1
The diameter of the cover 8 is cylindrical σ) than the diameter of the perforation 9 (
4) The flexible sleeve 8 with adhesive 11 is held immovably in the bore 9 by the stone 7.

In this case, it is possible to have a flexible covering 8 (1-any σ) shape. The grade of adhesive sealed within the tightly flexible object 8 is precisely metered to suit the intended use of the city.

The coupling member is integrally formed and is formed from a base part 1 and a connecting part 2 which are easy to turn. Arranged on the outer surface of the coupling element are mutually oriented annular recesses 3 having the same diameter, the widths of the annular recesses varying irregularly. Furthermore, an annular notch 30
The spacing between them is also of different size. The coupling member can be made from any material, for example wood, plastic, cast iron or a combination of various materials.

A central cylindrical part 6 is provided between the base part and the connecting part 2. An annular groove 5 is arranged between the cylindrical part 6 and the base part or the connecting part 2 in order to absorb the compression of material at the outer edge of the perforation that occurs when the coupling element is introduced into the cylindrical perforation 9. One pointed end 7 is provided on each end face, and the pointed end 7
is used to break the adhesive 110 flexible sheath 8 and thus release the adhesive 11. This at the same time provides an additional fixation of the connecting element in the side wall 10 of the borehole 90.

The outer surface of the coupling member is provided with a groove 4, which groove 4 is arranged to extend longitudinally in the area of the base part 1 and the tangent 151:ilt 2. The outer surface of the cylindrical part 6 is provided with fine indentations 4' which can be extended arbitrarily.

According to FIG. 2, the flexible covering 8 has an end face covering 12.
In this case, the cover 12 is in contact with the annular bent portion 13 of the covering 8, and the adhesive 11 is tightly sealed. . The end cover 12 is made of a sheet and projects from the annular fold 13. The cover 12 is at the same time used as a flexible clamping mechanism for the flexible covering 8 inserted into the borehole 9. Due to the arrangement of the mechanism, single or multiple clamping allows the use of jackets of the same dimensions in each case for different borehole diameters and, despite this, the flawless clamping of the jacket 8 in the borehole 9 remains effective. is obtained.

In other words, the tightening effect in the borehole 9 is not obtained directly by the sheath in the above configuration of the flexible sheath, but via a flexible feeding mechanism arranged on the outer surface of the sheath 8. can be obtained. This also facilitates the insertion of the flexible covering 8 filled with adhesive 11 into the cylindrical borehole 9 . This is because the covering itself is not compressed;
This is because only the flexible tightening mechanism needs to be compressed.

The construction of the flexible sheathing according to FIG. 2 advantageously makes it possible to form it from a sheet in a deep drawing process. The end-side cover 12 is welded after filling the cylindrical sheath 8 with adhesive and the sheet is then separated by cutting or punching into tightly closed individual sheaths.

The spherical covering 14 consists of an easily breakable material, in particular glass, and the adhesive 11
is filled with. A cylindrical tube piece 1 is provided on the wall of the covering body 14.
5 is arranged, and the tube piece 15 is tightly closed to the outside by an elastic member 16.

Covering 1 of the glass covering that has been destroyed
The 4 individual Ω glass fragments are forced into the wall of the cylindrical borehole 9 by the pressure of the joining member and also into the joining member 1/C, which is partly made of wood, thereby joining the glass fragments.

An additional bond is created between the wall of the borehole 9 of the component to be used and the connecting piece.

The connecting element according to FIG. 4 is made of wood or a corresponding material and has a small diameter compared to the diameter of the borehole 9. The material of the connecting member is compressed by a predetermined amount, and the brackets simultaneously form an annular notch 3, a groove 4 extending in the longitudinal direction,
Fine indentations 4' and annular incisions 17 are stamped and/or cut into the outer surface.

In a preferred embodiment, the borehole 9 has a diameter of 8 oval. The diameter of the material of the coupling member has a starting diameter of 8.7 mm and is compressed to a diameter of 7.9 mF. Due to the increase in water content, the connecting element expands to a diameter of more than 8.2 degrees, magnetically to a diameter of 8.81 degrees, so that the immobility of the connecting element introduced into the borehole 9 is increased. A tight fit is obtained.

The annular notch 1γ exposes the end of the cylindrical bonding material, which shortens the bonding process and further improves the expansion capacity. The chipboard or wooden board of the connecting member as well as the furniture body absorbs the moisture from the adhesive and expands due to the brackets. This mating chipboard cuts into the annular cutout 17 of the coupling member and forms a key 18.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the invention, in which FIG. 2 is a sectional view of a variant embodiment of the cladding incorporating an adhesive; FIG. 6 is a sectional view of a glass cladding; FIG. 5 is a diagram showing another connecting member, and FIG. 5 is a diagram showing a state of connection between the side wall of the furniture main body and the connecting member at f+j after the connecting action has occurred. 1.-Base part, 2.. Connection portion, 3.. Annular notch, 4.. Groove, 4'... Fine notch, 5. Annular groove, 6.. Cylindrical portion, 7.. - Point, 8, 14 - Ending body, 9... Perforation, 10... Side wall, 11... Adhesive, 12... Cover, 13... Bent part, 15 Tube piece, 16 ... Member, 17 ... Annular notch, 18
...Key (and 1 other person) Engraving of the drawings (no changes to the contents) Figure 1 4' Figure 3 Procedural amendment (method) July 25, 1980 Mr. Commissioner of the Patent Office 1. Indication of the case 1982 Patent Application No. 51279 2.
Title of the Invention Invisible joint for joining planar structural members and method for manufacturing the joining member of this joint 3, Relationship with the case of the person making the amendment Patent applicant I〆 Name Walter Fischer 4, Agent 6. Subject of correction

Claims (1)

[Claims] 1. An invisible joint that connects planar structural members using an adhesive and a joining member (12), a structure in which a liquid or paste adhesive (11) attempts to join. Element(
10) is insertable into the cylindrical borehole (9) and the coupling element can be driven or press-fitted into said borehole on each side, furthermore the coupling element is configured symmetrically with respect to the longitudinal solid axis. and has one or more grooves (4) extending in the longitudinal direction on the outer surface, an annular notch (3) and/or another molded body, and each end face of the coupling member extends in a tapered manner. or with one tip (7) in each case, in which the adhesive (11) is tightly encapsulated and enclosed within the covering (11). The sheathing (8) containing the agent is configured to be a shape-stable member and can be inserted into the perforation (9), and the sheathing (8, 14) is inserted into the hole where the connecting member is driven or press-fitted. An invisible joint for connecting planar structural members, characterized in that it can be broken in case of an accident. 2. The volume of the adhesive sealed by the covered body (8, 14) is adjusted according to the purpose of each use. 6. The covering body is possible. 3. A joint according to claim 1, wherein the joint is made of a flexible material. 4. Claims 1 to 6, in which one or more tightening mechanisms are arranged on the outer surface of the covering for tightening the flexible covering within the perforation (9). Any one of the items up to
Fittings listed in the article. 5. The tightening mechanism is constructed in a flexible manner and is arranged so as to extend or be uniformly distributed over the circumference of the flexible covering (8). 4
Fittings listed in section. 6. The flexible covering (8) is the cover (12) on the end face side.
The joint according to claim 4 or claim 5, having a substantially cylindrical shape. 7 The cylindrical wall of the flexible covering (8) and the cover (12
) are connected by welding.
Fittings listed in section. 8. Claim 6 or 7, wherein the cylindrical wall of the flexible covering (8) has an annular bent portion (13)
Fittings listed in section. ? 9. A joint according to claim 6, wherein the cover (12) consists of a sheet. According to any one of claims 6 to 9, the 10° cover (12) projects from the cylindrical wall of the flexible covering and the tightening is a mechanism. fittings. 11. The joint according to claim 1θ, wherein the cover (12) is flush with the annular bent portion (13). 12. The joint according to claim 1 or 2, wherein the covering (14) is made of an easily breakable piece. 1. The covering body is made of glass, and this broken body (1
13. The joint according to claim 12, wherein 4) has one or more target rupture points. 148. The joint of claim 16, wherein the target rupture point is formed by one or more constrictions circulating along the glass sheath. 15. Claims 12 to 14, wherein the glass covering (14) has a cylindrical shape, and a cylindrical tube piece (15) is disposed on the outer circumference. 16. Patent claim in which the cylindrical tube piece (15) is closed to the outside by melting, by an elastic member (16), or by a cap. Couplings according to paragraph 15. 1Z The connecting member is formed from a cylindrical material of wood or another statically stable expandable material, compressed to a certain extent, and having perforations (9). The joint according to claim 1, which has a small diameter compared to the diameter. 18. Claim in which the longitudinally extending groove (4) arranged on the outer surface of the coupling member continues to the end face side. The joint according to claim 17. 19. The joint according to claim 17, wherein cuts are provided at a number of locations to expose the butt ends on the outer surface of the coupling member.
The joint according to paragraph 1 or paragraph 18. 20. The joint according to any one of claims 17 to 19, wherein the notches on the outer surface are provided at both ends of the coupling member. 21, each one or more annular notches (17)
The joint according to any one of claims 17 to 20, wherein the joint is provided with: 22. Any one of claims 1 to 21, wherein a keyway joint is formed between the joining member and the chipboard of the furniture body after the adhesive has hardened. Entry 11y (7) Punishment. 26. The key (1st) is formed by the chipboard of the furniture body q, '1/1. , the joint according to claim 22. 24, chip 0 board (1u) σ) key (18)) 1
27. A joint according to claim 221M or claim 26, adapted to be fitted into an annular notch (17) in a fitting member. 25. Key (18) on chipboard (10) or adhesive (
11) The joint according to any one of claims 22 to 24, which is formed by absorbing moisture. 26 A liquid or paste adhesive (11) can be inserted into the cylindrical borehole (9) of the component (10) to be joined and driven into the borehole on both sides of the joint, or The connecting member is configured symmetrically with respect to the longitudinal solid axis, and includes one or more longitudinally extending grooves (4) and an annular cutout (3) on the outer surface. (or) has another molded body,
and both end faces of the coupling member are tapered or each have a pointed end (7), and the adhesive (11) is tightly sealed within the covering (11). A sheathing (8) having a sealed and encapsulated adhesive is configured to be insertable into the borehole (9) as a dimensionally stable member, and the sheathing (8, 14) has a connecting member. In a method for manufacturing a joining member in an invisible joint that joins planar components using a type of adhesive and a joining member that can be broken when driven (or press-fitted), When compressing the cylindrical material of the member by a predetermined amount, the molded body (3°4.4
', 5, 1γ) on the outer surface.