JPH0545734B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a dowel sealed with an adhesive so that the facing portions of pieces of wood are integrated with the dowel using an adhesive.

(Conventional technology) Traditionally, in wooden construction, timbers were joined together by creating joints or joints with complicated fitting shapes.
They were attached and reinforced using nails, bolts, dowels, etc.

(Problem to be solved by the invention) However, conventional shiguchi and joints are made by hand by craftsmen with special skills, resulting in high costs. There were problems with the use of joints and joints, which made it impossible to standardize and simplify the process, and the construction period became long.

In addition, the strength of nails etc. deteriorates due to corrosion, making it impossible to expect the long-term integration of the combined wood.
In addition, with bolts, there are gaps between the pieces of wood, and the strength of the pieces of wood must be estimated to be low.Also, since conventional dowels are only made of hardwood, they have no adhesive strength, and only the dowels can be used. There was a problem in that it was not possible to firmly integrate the pieces of wood together using this method.

The present invention has been made to solve the above-mentioned problems, and its purpose is to provide dowels filled with adhesive that can be firmly attached to wood by simply driving them into holes made in the wood. Our goal is to provide the following.

(Means for Solving the Problems) As a means for achieving the above object, the adhesive-filled dowel of the present invention includes a piston sliding hole in which a piston is mounted in the axial direction from both ends,
a groove communicating with the piston sliding hole and opening on the outer surface;
a dowel body having a sealing means provided at the outer opening of the groove and opened by the pressure of the adhesive; the leading end portions respectively protruding from the dowel body and the rear end portions being attached to the piston sliding hole; A configuration is adopted that includes a pair of pistons that form a sliding space on the center side of the dowel body in the piston sliding hole; and an adhesive that fills the space formed inside the dowel body.

(Function) Since the dowel sealed with the adhesive of the present invention is configured as described above, a hole approximately half the depth of the dowel body is placed opposite each other at the joint of the wood and at the joint on both sides of the joint. The dowels are inserted into the holes and the rear pieces of wood are brought into contact with each other. The combined length of both holes in the wood is the length of the dowel body, so the bottom of the hole presses the piston of the dowel to insert it into the dowel body. The adhesive sealed within the dowel body is compressed by the pistons on both sides and flows out from the outer opening of the groove. The adhesive that has leaked out is then removed from the gap between the dowel body and the hole.
By filling the space between the two pieces of wood and then curing, the two pieces of wood become integrated through the dowels.

(Example) Hereinafter, an example of a dowel sealed with the adhesive of the present invention will be described in detail based on the drawings.

First, the configuration of the embodiment will be explained.

The adhesive-filled dowel A of this example is the first
As shown in FIGS. 4 to 4, the main components are a dowel body 1, a piston 2, an adhesive 3, and a seal 4.

The dowel body 1 prevents the two pieces of wood 5a and 5b from shifting, and is provided with a piston sliding hole 11 that penetrates from one end face 10 to the other end face 10 at the axis of a cylindrical body of a predetermined length. ing. Further, a groove 12 along this piston sliding hole 11 is formed on both end surfaces 10,
They are equally spaced at four locations until 10 is opened.

The piston 2 is slidably mounted in the piston sliding hole 11, and has approximately half the length of the dowel body 1. 1 is attached so that it protrudes.
At this time, the center of the piston sliding hole 11 has a sliding space 13 having a length of one half of the total length of the dowel body 1.
is formed.

The adhesive 3 is used to bond and integrate both pieces of wood 5a and 5b through the dowel body 1,
and the sliding space 13 are filled.

The seal 4 is a sealing means for sealing the outer surface opening 14 of the groove 12 formed on both end surfaces 10, 10, and presses the pistons 2, 2 together to seal the adhesive 3.
The dowel body is fitted to the dowel body to such an extent that when pressed, the pressure of the adhesive 3 releases the sealed state and the dowel body comes off.
Note that 50a and 50b in the figure are holes having a depth approximately half the length of the dowel body 1 formed in the timbers 5a and 5b.

Next, the operation of the embodiment will be explained.

Since the adhesive-filled dowel A of this example was constructed as described above, as shown in Fig. 4A,
After inserting dowel A into holes 50a and 50b, both pieces of wood 5a,
5b face to face. At this time, the dowel body 1 fits into both holes 50a, 50b, and
Both pistons 2, 2 pressed by the bottom surface of 0b press the adhesive 3. As the pressure increases, the adhesive 3 passes through the groove 12 to the outer opening 1 as shown in FIG.
4 is opened to flow out of the dowel body 1. The adhesive 3 that has flowed out fills the space between the dowel body 1 and the holes 50a and 50b and hardens, as shown in FIG. For this reason, both timbers 5a and 5b
are firmly integrated via the dowel body 1.

Although the embodiments of the present invention have been described above based on the drawings, the specific configuration of the present invention is not limited to the above-mentioned embodiments, and design changes may be made without departing from the gist of the invention. Included in the present invention.

For example, in the embodiment, the piston sliding hole 11 is provided to penetrate from one end surface 10 to the other end surface 10 of the dowel body 1, but the present invention is not limited to this, and as shown in FIG. may be provided, and the grooves 3 may also be provided individually without communicating with each other.
In this case, the adhesives 3, 3 filled in both sliding spaces 13, 13 are applied to both outer surface openings 14, 14, respectively.
Since the same amount is released from the dowel A and both holes 50
There is an advantage that the adhesion with a and 50b is more evenly performed.

In addition, the outer peripheral surface of the dowel body 1 is not limited to a flat shape;
For example, as shown in FIGS. 6 and 7, a taper 16 may be provided at the tip or a stepped portion 17 may be provided on the outer peripheral surface. In this case, holes 50a and 50b of dowel A
In particular, when holes in different directions are provided in one member as shown in Fig. 11, the dowels can be moved in parallel directions by the amount of the taper, making it easy to insert the dowels. be.
Further, since the stepped portion 17 forms a part where the adhesive 3 bites into the dowel A, there are advantages such as stronger adhesion with the hole.

Further, although the dowel body 1 is provided with four grooves 12, the present invention is not limited to this, and the number of grooves can be set arbitrarily. In addition, as shown in FIG. 8, protrusions 18 that slide in the grooves 12 are provided in the intermediate part of the piston 2, and the piston 2 is pressed so that the tip end touches the end surface 10 of the dowel body 1. A protrusion 18a may be provided at the tip of the piston 2, which closes the outer opening 14 when the pistons are flush with each other. In this case, the outflow amount of the adhesive 3 is increased and the outflow pressure is increased to sufficiently supply the adhesive 3 to the narrow area, and the protrusion 18a prevents air and adhesive from flowing back into the dowel body. There is an advantage. Also, dowel body 1
A horizontal hole 12a may be provided on the outer peripheral surface of the groove 12 and communicate with the groove 12. In this case, there is an advantage that the adhesive 3 can be evenly flowed out toward the peripheral wall of the hole in the wood.

Next, a method of constructing a wooden building using dowels sealed with the adhesive of the present invention will be described in detail based on drawings.

This embodiment shows a method of assembling a wooden building by integrating joints B and joints C of timbers 5a, 5b, etc. with dowels A filled with adhesive as shown in FIG.

FIG. 9 shows the connection state of the joint B by the timber 5a constituting the joist and the timber 5b constituting the large pull, and the full length of the dowel body 1 is attached to the joint between the joist 5a and the large pull 5b, respectively. Approximately half holes 50a and 50b are provided, and the dowel body 1 shown in FIG. 1 is inserted into the holes 50a and 50b, as shown in FIG.
a and the large drawer 5b, and insert the dowel body 1 into both holes 50.
a and 50b and presses the pistons 2, 2 protruding from the dowel body 1 at the bottoms of the holes 50a and 50b, and the adhesive 3 is pressed by the pistons 2, 2.
The seal 4 is opened with the pressure of The Shiguchi is integrated by filling the entire space between the two and then curing it. In the figure, reference numeral 51 denotes a bundle in a butted state, and the joint B between the bundle 51 and the main drawer 5b is also integrated using a dowel A filled with adhesive.

Figure 10 shows that the wood 5a that makes up the base and the wood 5b that makes up the pillar are connected to each other without providing a tenon or tenon hole.
The cut end of b is pressed against the base 5a and is integrated with a dowel A filled with adhesive, similar to the connection shown in FIG. 9. 52 in the figure is the Ohiki, and the Ohiki 5
2 is also integrated with the base 5a and the dowel A filled with adhesive.

Fig. 11 shows a joint shown in Fig. 9 in which the wood 5a forming the ridgepole, the wood 5b forming the barrel wood, and the wood 53 forming the barrel wood 5b and the main building are connected without using nails, glazing, etc. The figure shows one integrated with dowel A filled with adhesive.

Figure 12 shows a joint between the timbers 5a and 5b that make up the beam, without using complicated cuts or bolts, with the vertical cut surfaces facing each other, similar to the joint shown in Figure 9. The figure shows a joint C integrated using a dowel A filled with adhesive.

(Effects of the Invention) As explained above, since the dowel sealed with the adhesive of the present invention is constructed as described above, all that is required is to make a hole in both pieces of wood, insert the dowel, and bring the pieces of wood together. The adhesive sealed in the dowel body flows out, fills the gap between the dowel body and the hole, and hardens, making the wood and dowel body one piece, making it possible to firmly join the pieces of wood together.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view showing an embodiment of the dowel sealed with the adhesive of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a perspective view thereof, and Fig. 4 A, B, and C show the same state of use. FIG. 5 is a vertical sectional view showing a dowel with a partition wall provided in the middle of the piston sliding hole, FIGS. 6 and 7 are perspective views showing a dowel with a stepped portion on the outer periphery, and FIG.
The figure is a vertical cross-sectional view showing a dowel with a horizontal hole in the dowel body and a protrusion on the piston, Figures 9 to 11 are explanatory diagrams showing how to fix a wooden joint, and Figure 12 is a diagram of a wooden joint. It is an explanatory view showing a fixing method. A... Dowel filled with adhesive, B... Shiguchi, C
...Joint, 1...Dowel body, 2...Piston,
3...Adhesive, 4...Seal (sealing means), 5a,
5b...Wood, 10...End face, 11...Piston sliding hole, 12...Groove, 13...Sliding space, 14...
...External opening, 50a, 50b...hole.

Claims (1)

[Claims] 1. A piston sliding hole into which the piston is mounted axially from both ends, a groove that communicates with the piston sliding hole and opens on the outer surface, and a seal that is provided at the outer opening of the groove and is opened by the pressure of the adhesive. a dowel body having means; a pair of dowel bodies each having a tip end protruding from the dowel body and a rear end installed in the piston sliding hole to form a sliding space on the center side of the dowel body of the piston sliding hole; A dowel sealed with an adhesive, comprising: a piston; and an adhesive filled in a space formed inside the dowel body.