JPS6132004Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a joining device used to connect each side of two boards by bringing them into contact, such as when joining a decorative edge board to the corner edge of a ceiling board. The object is to connect plates beautifully without exposing the heads of fixtures such as nails and bolts on the outside.

The structure of the present invention forms serrated engagement teeth on the outer surface,
and a cylindrical female piece having a vertical circular hole therethrough and a locking protrusion surrounding the circular hole, and the locking protrusion fitting into the insertion piece that tightly fits into the circular hole. and a mating male piece which forms an engaging groove and protrudes from the rear of the insertion piece to be driven into the plate surface. Drive it into the drilled fitting hole and embed it irremovably with the serrated engagement teeth, then hammer the mating male piece into the other plate surface by hitting it with a hammer, etc., and insert it from that plate surface. After protruding the piece, the insertion piece is tightly fitted into the circular hole of the cylindrical female piece to connect the cylindrical female piece and the fitting male piece,
Both one and the other plate surfaces are joined at the same time.

An embodiment of the present invention and the accompanying drawings will be described.

Reference numeral 1 denotes a circular cylindrical female piece made of synthetic resin, which has a large number of serrated engagement teeth 2 on its outer periphery, and a circular hole 3 extending vertically through its center.
A locking protrusion 4 is provided on the circumferential surface of the circular hole 3 at the center in the vertical direction.
At the same time, a circular fitting step 5 with an enlarged diameter is formed on the periphery of the driving end.

Reference numeral 6 denotes a male fitting piece made of metal, which is connected to the fitting stage 5.
A pointed insertion piece 8 that fits tightly into the circular hole 3 is projected from the engaging collar 7 having a thickness substantially equal to the depth of the engaging collar 7 . Also,
A locking protrusion 4 of the circular hole 3 is provided on the circumferential surface of the insertion piece 8.
An engaging recessed groove 9 into which is fitted is formed. To the rear of the engagement collar 7 are two wedge pieces 10, 10, which are an example of driven pieces.
is provided with a plurality of serrated engagement teeth 11 on the outside with an engagement step facing in the direction of the engagement flange 7, and an engagement step with an engagement surface facing the engagement flange 7 on the slightly rearward inner side of the tip. 1
2 will be provided.

A plate material a made up of the cylindrical female piece 1 and the fitting male piece 6,
The joining of c will be explained.

After drilling a fitting hole b with an inner diameter approximately equal to the outer diameter of the cylindrical female piece 1 in a plate material a such as a ceiling plate with a drill or the like, the cylindrical female piece 1 is hit with a hammer and embedded in the hole b, and is fitted. Sodan 5
facing the outside. The female piece 1 has the engaging teeth 2 in the hole b.
It gets stuck on the inner circumferential surface of the blade, making it impossible to perform the technique.

Insert the wedge pieces 10, 10 of the mating male piece 6 into the contact surface of the plate material c, such as a decorative edge plate, to be joined to the plate material a, at the location corresponding to the female piece 1 fitted into the plate material a. Insert it by hitting it with a hammer or the like from the 8th side of the insert. At this time, care is taken to prevent the insertion piece 8 from being damaged by driving the insertion piece 8 through a stopper provided with a groove into which the insertion piece 8 loosely fits. The wedge pieces 10, 10 are held immovably by engagement teeth 11 on their outer surfaces and engagement steps 12 on their inner surfaces.

As mentioned above, after attaching the female piece 1 and the male piece 6 to each of the plates a and c, attach the plate a to the ceiling etc.
Place the plate c on the plate a so that the insertion piece 8 of the mating male piece 6 is aligned with the center of the circular hole 3 of the cylindrical female piece 1, and press the plate c by hitting it from the exposed outer surface d with a mallet or the like. do.
At this time, the insertion piece 8 is inserted into the circular hole 3, and the insertion piece 8 is inserted into the circular hole 3.
The inner locking protrusion 4 fits into the engagement groove of the insertion piece 8, and the female piece 1 and the male piece 6 are connected, so that the plates a, c
are joined by touching the respective plate surfaces.

In addition, by increasing the thickness of the engaging flange 7 of the male piece 6, it is also possible to connect the male piece 6 to the plates a and c while maintaining a constant distance therebetween.

As clarified in the above explanation, the present invention has a cylindrical female piece 1 on the plate surface of one plate material a, and a cylindrical female piece 1 on the plate surface of one plate material a.
After attaching the mating male pieces 6 to the respective plate surfaces in a manner that cannot be removed, insert the insertion piece 8 protruding from the other plate surface into the circular hole 3 formed on one plate surface, and then The locking protrusion 4 of the hole 3 is inserted into the engagement groove 9 of the insertion piece 8.
Since the two plates a and c are joined by fitting into the plate, unlike when plates are connected by driving nails or bolts, the mounting heads of nails, bolts, etc. are exposed on the outer surface d. The outer surface d is not exposed, and the outer surface d is generated by nailing from the exposed outer surface d of the board c.
Since damage such as cracks and dents does not occur, there are excellent effects such as the ability to install the plate material C beautifully.

[Brief explanation of drawings]

The accompanying drawings show an embodiment of the present invention; FIG. 1 is a partially cutaway sectional view showing the separated state, and FIG. 2 is a longitudinal sectional view showing the combined state. 1... Cylindrical female piece, 2... Serrated engagement teeth, 3...
Circular hole, 4... Locking protrusion, 6... Fitting male piece, 8...
Insertion piece, 9... Engagement groove, 10... Wedge piece.

Claims (1)

[Scope of utility model registration request] A cylindrical female piece having sawtooth-like engagement teeth formed on its outer periphery, a vertical circular hole formed therethrough, and a locking protrusion provided around the circular hole, and an insert that tightly fits into the circular hole. A plate surface consisting of a mating male piece formed by forming an engaging recessed groove in which the locking protrusion fits into the piece, and protruding a driving piece that is driven into the plate surface behind the insertion piece. joint attachment.