JPH0336375B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for connecting wooden boards for furniture or construction.

[Problems to be solved by conventional technology and invention]

Conventionally, in order to connect wooden boards that make up furniture such as wardrobes, for example, a top plate 8 is used as shown in FIG.
and side plate 9 with bolts 10, or
As shown in the figure, the dowels 11 are fitted and connected together with adhesive. However, in the former case, the bolt head is exposed on the outer surface of the furniture, which is unsightly, and if the bolt is tightened too strongly, the threads become loose, so it is necessary to fit the cylindrical receiving screw 12 to receive the bolt in advance. For this reason, processing is complicated and there is a risk of cracking, and in the latter case, there is a risk that the bonding is insufficient and there is a risk of separation during use.

Therefore, the main object of the present invention is to reliably and firmly connect wooden boards using a unique method that has not been seen before, thereby solving the above-mentioned drawbacks of the conventional method.

[Means to solve the problem]

The method for connecting wooden planks for furniture construction according to the present invention includes forming recesses in the contact surfaces of the wooden planks to be connected, and forming grooves in one contact surface and/or the other contact surface. After forming, the abutment surfaces of the wooden boards are brought into close contact with each other to form a cavity for filling the synthetic resin with the recesses facing each other, and the grooves and the grooves facing the grooves are formed. An injection path for injecting the synthetic resin material from the injection molding machine into the cavity is formed by having contact surfaces or grooves facing each other, and then the injection molding machine passes the synthetic resin material through the injection path. Molten synthetic resin is injected into the cavity, thereby forming a dowel-like member on the abutment surface of the wooden boards to connect the wooden boards.

[Effect]

When molten synthetic resin material is injected into the cavity through the injection path in an injection molding machine, the air in the cavity escapes to the outside through the wood base, and at the same time some of the molten synthetic resin material injected into the cavity is impregnated into the wood of the board from the cavity peripheral wall surface by the injection pressure and exerts a strong adhesive effect, thereby firmly connecting the two boards.

〔Example〕

The details of the present invention will be described below based on embodiments shown in the drawings.

In the figure, reference numerals 1 and 2 indicate wooden boards that are connected by the method of the present invention, and are used, for example, as a top plate and a side plate that constitute a frame of furniture. The board material includes a board material such as solid wood or synthetic wood such as plywood or particle board.

Then, recesses 17 and 18 are formed in the contact surfaces 15 and 16 of the two plates 1 and 2 to be joined to form a cavity 3 for filling with synthetic resin, and a recess is formed in the contact surface 15 of one of the plates. An injection path 4 for injecting a synthetic resin material into the cavity 3 having a groove 19 formed therein and having the groove 19 and a contact surface 16 facing the groove 19.
form.

In addition, the injection path 4 may be formed by forming the groove 19 only on the other contact surface 16 and having the groove 19 and the contact surface 15 facing it. Forming grooves 19, 19 in 15, 16,
It is also possible to form grooves 19 facing each other. In the embodiment shown in Fig. 1, the cavity 3 is formed in the same form as a generally used rod-shaped dowel, but it is also free to form a dogleg-shaped cavity 3A as shown in Fig. 3. can be,
It is also possible to form the cavity 3B with an inclined shape as shown in Fig. 4, or the cavity 3C with a large diameter at the inner part as shown in Fig. 5, or form it in various other forms. It would be possible.

Next, with both plate materials 1 and 2 tightly held by holders 5 and 5, a molten synthetic resin material is injected into the cavity 3 by an injection molding machine 6 to form a dowel-like member 7 inside the cavity 3.
In this case, since the wooden boards 1 and 2 have air permeability, the air in the cavity 3 escapes to the outside through the wood, and at the same time, a part of the molten synthetic resin material injected into the cavity 3 is released under the injection pressure (usually 20 kg/cm ² ), it impregnates into the wood of the plates 1 and 2 from the cavity peripheral wall surface and exerts a strong adhesive effect, thereby firmly connecting both the plates 1 and 2. In this case, the shape of the dowel-like member 7 can be formed into various shapes shown in FIGS. can be concatenated.

The synthetic resin materials used in the present invention include vinyl chloride, polyethylene, and various other synthetic resin materials.

〔Effect of the invention〕

Since the present invention is configured as described above, it produces the effects described below.

During injection molding, a part of the molten synthetic resin material in the cavity 3 impregnates into the wood of the wooden boards 1 and 7 from the cavity peripheral wall surface due to the injection pressure, and exerts a strong adhesive effect, thereby creating a strong adhesive effect between the two boards 1 and 7. , 2 can be firmly connected.

The synthetic resin material does not leak onto the outer surfaces of the wooden boards 1 and 2, and can be beautifully finished without staining the outer surfaces.

The processing on the wooden boards 1 and 2 is done on the contact surfaces 15 and 1.
6 are formed with recesses 17 and 18, and a recessed groove 19.
It is only necessary to form a , which can be done easily and reliably.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing an embodiment of the connection method according to the present invention, Fig. 2 is a sectional view of connected wooden boards, and Figs. 3, 4, and 5 show modified examples of the cavity. FIG. FIG. 6 is a sectional view of wooden boards connected by a conventional method, and FIG. 7 is a sectional view of wooden boards joined by another conventional method. 1, 2...Wood board material, 3...Cavity, 4...
... Injection path, 6 ... Injection molding machine, 7 ... Dowel-shaped member, 15, 16 ... Contact surface, 17, 18 ... Recess, 19 ... Concave groove.

Claims (1)

[Claims] 1 Contact surfaces 1 of each of the wooden boards 1 and 2 to be connected
After forming recesses 17 and 18 in the wooden boards 1 and 16 and forming grooves 19 in the one contact surface 15 and/or the other contact surface 16, the contact surfaces 15 and 18 of the wooden boards 1 and 2 are 16 are brought into close contact with each other to form a cavity 3 for filling the synthetic resin with the recesses 17 and 18 facing each other, and the groove 19 and the contact surface 15 facing the groove 19, 16, or an injection molding machine 6 with grooves 19, 19 facing each other.
An injection path 4 for injecting the synthetic resin material into the cavity 3 is formed, and then the injection molding machine 6 is used to inject the synthetic resin material into the cavity 3 through the injection path 4.
A method for constructing furniture characterized by injecting a molten synthetic resin to form a dowel-like member 7 on the contact surfaces 15, 16 of the wood planks 1, 2 to connect the wood planks 1, 2. How to connect wood planks.