JPH09203123A - Joining piece for building member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent play of a joining surface and detachment of a joining piece in the joining piece by which building members such as wooden panels are joined with each other. SOLUTION: A joining piece 10 is provided with a flange part 40 and a pair of press-fitting parts 50, 50 which are press fitted to fitting holes provided in a pair of building members which are projected from face and back surfaces of the flange part 40 and joined with each other. Each press-fitting part 50 is provided with a plurality of press-fitting ribs 51 extended in the radial direction, and coming-off preventive fins 52 which are provided within a space between the adjacent press-fitting ribs 51 and projected outwardly in the radial direction from the press-fitting ribs 51.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining tool for joining building members such as wood panels to each other, and more particularly, to prevent rattling of the joining surface and removal of the joining tool.

[0002]

2. Description of the Related Art Conventionally, this type of connector has a pair of press-fitting members which are respectively press-fitted into a flange portion and mounting holes provided in a pair of building members which are projected from the front and back surfaces of the flange portion and are joined to each other. It was equipped with a department. Each of the press-fitting portions was made of a rod-shaped member having an outer diameter slightly larger than the inner diameter of the mounting hole of the building member.

Then, the pair of building members are joined to each other by press-fitting the rod-shaped press-fitting portions into the respective mounting holes of the building members. On the other hand, there is also one in which each press-fitting portion is provided with a fin for preventing slipping out. The fin protrudes annularly, is inclined toward the flange portion, and its tip end is
It is sharp like a blade. Further, the fins are provided in a plurality of stages along the insertion direction of the press fitting portion.

When the fins are press-fitted into the mounting holes of the building member, the fins are pushed by the inner peripheral surface of the mounting holes, and are bent inward in the radial direction to fit into the mounting holes. Then, when a force in the pulling direction is applied to the joining tool, the sharp tips of the fins become
By biting into the inner peripheral surface of the mounting hole, the press-fitting portion is prevented from coming off the mounting hole.

[0005]

However, among the above-described conventional connectors, those having a rod-shaped press-fitting portion have the advantage that the displacement of the joint surface of the building member can be effectively prevented. When the pulling force acts, there is a drawback that the press-fitting portion easily comes off. On the other hand, the press-fitting portion having the fins is hard to come off by the action of the fins, but when the building members are displaced from each other, that is, when the force in the radial direction of the press-fitting portion acts, the fins are pushed against the inner peripheral surface of the mounting hole. It may bend. As described above, when the fins are bent, the building members are displaced in a staggered manner.

Therefore, the invention according to claim 1 has been made in view of the problems of the above-mentioned prior art, and the purpose thereof is as follows. Claim 1
The described invention is intended to provide a connector having both advantages of a conventional rod-shaped press-fitting portion and a fin. That is, according to the first aspect of the present invention, the fins prevent the press-fitting portion from coming off, and the fins are radially multi-divided by the press-fitting ribs, whereby the displacement of the joint surface of the building member can be effectively prevented. The purpose is.

[0007] The second aspect of the present invention is the first aspect of the present invention.
In addition to the objects of the invention described above, the following objects are provided. That is, the invention according to claim 2 is to provide a pair of circumferential portions that are in contact with the inner peripheral surface of the mounting hole of the building member over the entire circumference on the free end side and the flange portion side of the press-fitting portion with the fin interposed therebetween. Thus, it is an object of the present invention to more effectively prevent the play of the press-fitting portion in the mounting hole.

[0008]

[Means for Solving the Problems]

(Characteristics) The present invention is for achieving the above-mentioned object, and the contents thereof will be described below by using, for example, the first embodiment shown in FIGS. The invention according to claim 1 is characterized by the following points.

That is, each press-fitting portion (50) of the joining tool (10) has the following two configurations. First, the press-fitting rib (5
1), and the press-fitting ribs (51) extend radially and are present in plural as shown in FIGS. Secondly, there is a retaining fin (52), and this fin (52) is, for example, as shown in FIG.
As shown in FIG. 3, the press-fitting ribs (51) are provided in the space between the press-fitting ribs (51) adjacent to each other and project outward in the radial direction from the press-fitting ribs (51).

The second aspect of the present invention is the first aspect of the present invention.
In addition to the features of the invention described above, the following features are provided. That is, for example, as shown in FIGS.
The free end side of the press-fitting part (50) and the flange part with the fin (52) in between.
Mounting holes for building members (20, 30) located on the (40) side, respectively.
A pair of circumferential portions (for example, a free end side circumferential portion 54 and a flange portion side circumferential portion 5 that come into contact with the inner circumferential surface of (21, 31) over the entire circumference.
5). (Operation) Next, the operation of each invention described in each claim having the above-mentioned features will be described below.

According to the first aspect of the invention, the following operation is achieved. That is, each press-fitting part (50) of the connector (10)
As shown in FIG. 7, for example, when a force in the removal direction is applied with the building members (20, 30) being press-fitted into the mounting holes (21, 31), the fins (52) cause the mounting holes (21 , 31) engages with the inner peripheral surface,
Prevents the press-fitting part (50) from coming off. Also, building materials (20,30)
When they are displaced from each other, that is, when a force in the radial direction of the press-fitting portion (50) is applied, the press-fitting ribs (51) come into contact with the inner peripheral surfaces of the mounting holes (21, 31).

Therefore, it is possible to prevent the fins (52) from being pushed by the inner peripheral surfaces of the mounting holes (21, 31) and bending inward in the radial direction. Therefore, it is possible to prevent the press-fitting portion (50) from rattling in the mounting holes (21, 31) and causing the building members (20, 30) to be staggered from each other. According to the invention described in claim 2, in addition to the operation described in claim 1, the following operation is achieved.

That is, each press-fitting portion (50) of the connector (10) is
For example, as shown in Figure 7, the mounting holes for each building member (20, 30)
When the building members (20, 30) are pressed into the (21, 31) and the building members (20, 30) are displaced from each other, that is, when the radial force of the press-fitting part (50) is applied, the circumferences of the fins (52) are located. Parts (for example, the free end side circumferential portion 54 and the flange side circumferential portion 55) are attached to the mounting holes (2
The inner peripheral surface of 1,31) contacts in the entire circumferential direction.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) FIGS. 1 to 8 show a first embodiment of the present invention.
It shows an embodiment. 1 is a perspective view of the joining tool, FIG. 2 is a cross-sectional view showing an example of using the joining tool, FIG. 3 is a front view in which the upper half of the joining tool is taken as a cross section, FIG. 4 is a side view of FIG. 3, and FIG. Figure 3
6 is a cross-sectional view taken along line VI-VI of FIG. 3, FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 3, FIG. 7 is a cross-sectional view showing a usage state of the joining tool, and FIG. 8 is a press-fitting portion of the joining tool and a building member. Sectional drawing which shows the relationship with a mounting hole is shown, respectively.

In FIG. 1, reference numeral 10 denotes a joint, and the joint is
As shown in FIG. 2, 10 is used for joining building members 20, 30 such as wood panels to each other. The building members 20 and 30 are not limited to wood panels, for example, and may be made of other materials. As shown in FIG. 7, mounting holes 21 and 31 for press-fitting the joining tool 10 are formed on the facing joint surfaces of the building members 20 and 30, respectively. Each mounting hole 21,31
While penetrating the building members 20 and 30, respectively, annularly recessed seat portions 22 and 32 are formed at the edges facing the joint surface, respectively.

Although the mounting holes 21 and 31 are through holes, they are not limited to these and may be so-called blind holes. Also, the seat
Although 22,32 are formed in both of the mounting holes 21,31, they may be provided in only one of the mounting holes 21,31. The joint 10
Is roughly divided into a flange portion 40, as shown in FIG.
A pair of building members protruding from the front and back of the flange portion 40.
It is provided with a pair of press-fitting portions 50, 50 which are press-fitted into the respective mounting holes 21, 31 of the 20, 30 (see FIG. 7). And the joint tool 1
0 is integrally formed of synthetic resin such as nylon having appropriate rigidity and elasticity.

The flange portion 40, as shown in FIG.
It has a disk shape and its outer diameter is set to the mounting hole 21,31 of the building member 20,30.
It is set larger. The press-fitting portions 50 are shown in FIG.
As shown in FIGS. 3 and 8, a plurality of press-fitting ribs 51, ...
And the retaining fins 52, which are provided in the space between the adjacent press-fitting ribs 51, 51 and project radially outward from the press-fitting ribs 51.

Although each press-fitting portion 50 is formed in a hollow cylindrical shape, it is not limited to this and may be formed in a solid cylindrical shape. As shown in FIG. 7, each press-fitting portion 50 has its entire length set longer than the length of each mounting hole 21, 31 of the building member 20, 30. In this embodiment, each mounting hole 21,31 is a building member 20,30
Since they penetrate each other, the total length of each press-fitting portion 50 is set to be longer than the plate thickness of each building member 20, 30.

As shown in FIG. 8, the press-fitting ribs 51 have outer diameters around them and are attached to the mounting holes 21, 31 of the building members 20, 30, respectively.
It is set to be substantially the same so as to be press-fitted with respect to the inner diameter of. Further, each press-fitting rib 51 is formed in a ladder shape in cross section as shown in FIG. The reason why the ladder-shaped cross section is formed in this manner is to facilitate the die-cutting of the two-sided cut.
Of course, if the mold is divided into four sides, press fit rib 51
It is also possible to form radially.

Further, between the press-fitting ribs 51 adjacent to each other, as shown in FIGS. 1, 3 and 6, a connecting circumferential portion 57 and a base circumferential portion 58 are provided.
A radial reinforcing rib 53 having an outer diameter equal to that of the press-fitting rib 51 is formed by being sandwiched between. As shown in FIGS. 1, 3 and 5, the fins 52 are formed at equal intervals along the entire length direction of each press-fitting portion 50. Then, each tip portion of the fin 52 projects obliquely toward the flange portion 40 side,
It is sharp like a blade.

On the other hand, as shown in FIGS. 1 and 3, the press-fitting part 50 is located on the free end side and the flange part 40 side of the press-fitting part 50 with the fin 52 interposed therebetween, and Mounting hole 2
A free end side circumferential portion 54 and a flange portion side circumferential portion 55 that are in contact with the inner circumferential surfaces of 1,31 over the entire circumference are formed. As shown in FIGS. 1 and 3, the free end side circumferential portion 54 has a tip tapered portion 56 having an outer diameter equal to that of the press-fitting rib 51 and having a diameter reduced toward the tip.

As shown in FIG. 3, the flange-side circumferential portion 55 has an outer diameter equal to that of the press-fitting rib 51, and an adjacent circumferential portion 57 adjacent to the fin 52 and a base portion facing the flange portion 40. And a circumferential portion 58. In addition, the flange portion side circumferential portion 55,
Although it is composed of the adjacent circumferential portion 57 and the base circumferential portion 58, the invention is not limited to this, and only one of them may be provided.

As described above, the press-fitting rib 51, the reinforcing rib 53, the free end side circumferential portion 54, the adjacent circumferential portion 57 of the flange portion side circumferential portion 55, and the base circumferential portion 58 have the same outer diameter. have. Further, as shown in FIGS. 1 and 3, the fin 52 is box-shaped surrounded on four sides by a press-fitting rib 51, a free end side circumferential portion 54, and a flange portion side circumferential portion 55. ing.

Next, a method of joining a pair of building members 20, 30 to each other by using the joining tool 10 having the above-mentioned structure will be described. First, the mounting hole 2 for either building member 20 or 30
One press-fitting part 50 of the connector 10 is press-fitted into the flange part 40 into the insides of the fitting parts 31, 31, and the tip taper parts 56 are projected from the rear surfaces of the mounting holes 21, 31. Similarly, the other press-fitting portion 50 of the joining tool 10 protruding from one of the building members 20 and 30 is connected to the other building member 2
2 and 7 by pressing into the mounting holes 21 and 31 of 0 and 30.
Both building members 20, 30 can be joined together as shown in FIG.

At this time, since the seat portions 22 and 32 are provided in the respective mounting holes 21 and 31 of the building members 20 and 30, the flange portion 40 has the seat portions 22 and 32 as shown in FIG. Fit into each. Then, the front and back surfaces of the flange portion 40 are brought into contact with the bottoms of the seat portions 22 and 32, so that both press-fitting portions 50 are fitted into the respective mounting holes 21 and 31.
The insertion amount of can be regulated to be constant. Press-fit part 5 in mounting holes 21 and 31
When press-fitting 0, as shown in FIG. 8, the fin 52 bends so that the outer diameter of the tip end portion of the fin 52 becomes larger than the mounting holes 21, 31.
The inner diameter of the fin 52 is substantially equal to the inner diameter of the fin 52, and the tip end of the fin 52 is pressed against the inner peripheral surfaces of the mounting holes 21 and 31 by the elastic force of the fin 52.

An adhesive or the like may be used together when the building members 20 and 30 are joined. Building member 2 in the above-mentioned joined state
When a force is applied in a direction in which the joint surfaces of 0 and 30 are separated from each other, that is, in a direction in which the press-fitting portion 50 of the joint tool 10 is removed from the mounting holes 21 and 31 of the building members 20 and 30, the tip portions of the fins 52 are attached to the mounting holes 21 and By attempting to bite into the inner peripheral surface of 31, the press-fitting portion 50 can be prevented from coming off from the inside of the mounting holes 21, 31.

On the other hand, when the building members 20 and 30 are displaced from each other, that is, when the force in the radial direction of the press-fitting portion 50 is applied,
The free end side circumferential portion 54 of the press-fitting portion 50, and the adjacent circumferential portion 57 and base circumferential portion 58 of the flange portion side circumferential portion 55 are attached to the mounting holes 21, 3
It contacts the inner peripheral surface of 1 over the entire circumferential direction. Further, depending on the direction in which the building members 20, 30 are displaced, the radially extending press-fitting ribs 51 or the reinforcing ribs 53 of the press-fitting part 50 partially contact the inner peripheral surfaces of the mounting holes 21, 31.

Therefore, the circumferential portion 5 of the press-fitting portion 50 on the free end side is
4, the adjacent circumferential portion 57 and the base circumferential portion 58 of the flange portion-side circumferential portion 55, and the press-fitting rib 51 or the reinforcing rib 53, the mounting hole 2
By contacting the inner peripheral surface of 1,31, the fin 52 is attached to the mounting hole 21,3
It can be prevented from being pressed by the inner peripheral surface of 1 and bending inward in the radial direction. Therefore, it is possible to prevent the press-fitting portion 50 from rattling within the mounting holes 21 and 31, and causing the building members 20 and 30 to shift from each other due to this.

In short, the four sides of the fin 52 are press-fitting ribs 51,
Since the free end side peripheral portion 54 and the flange portion side peripheral portion 55 are surrounded by the adjacent peripheral portion 57 in a box shape, the fins 52 are pressed against the inner peripheral surfaces of the mounting holes 21 and 31 more than necessary. It is possible to prevent it from being bent and bent. (Second Example) Next, a second example of the embodiment of the present invention will be described with reference to FIG.

FIG. 9 shows the front of the connector.
As shown in FIG. 9, the second embodiment is characterized in that the recesses 60 ... Are formed in two rows in the circumferential direction on the flange side circumferential portion 55 so that the distance between the two rows of the recesses 60 is reduced. The point is that the intermediate circumferential portion 61 is formed. That is, in the second embodiment, the flange-side circumferential portion 55 is composed of the adjacent circumferential portion 57, the base circumferential portion 58, and the intermediate circumferential portion 61. The adjacent circumferential portion 57 and the base circumferential portion 58 may be omitted.

According to the second embodiment, the intermediate circumferential portion 61 is in contact with the inner peripheral surface of each mounting hole 21, 31 when press-fitted into each mounting hole 21, 31 of the building member 20, 30. Then, press-fit part 110 is further
It can be difficult to pull out. In the description of the second embodiment, the same components as those of the first embodiment described above will be designated by the same reference numerals, and the detailed description thereof will be omitted. Third Example Next, a third example of the embodiment of the present invention will be described with reference to FIG.

FIG. 10 shows a front view of the connector. The third embodiment is characterized in that the press-fitting rib 51 and the fin 52 are formed from the root side of the flange portion 40, as shown in FIG. According to the third embodiment, the structure of the press fitting portion 50 can be simplified. In the description of the third embodiment, the same components as those of the first embodiment described above will be designated by the same reference numerals, and the detailed description thereof will be omitted.

[0033]

Since the present invention is configured as described above, it has the following effects. Claim 1
According to the described invention, the following effects can be obtained. That is, the fins can prevent the press-fitting part from coming off, and
By radially dividing the fins by the press-fitting ribs, it is possible to effectively prevent the displacement of the joint surface of the building member.

According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the following effect is exhibited. That is, by providing the base circumferential portion at the base end portion on the flange side and the tip circumferential portion at the free end portion of the press-fitting portion, it is possible to more effectively prevent looseness of the press-fitting portion in the mounting hole. Can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view of a connector.

FIG. 2 is a cross-sectional view showing a usage example of the connector.

FIG. 3 is a front view in which the upper half of the connector is shown in section.

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a sectional view taken along the line VV of FIG. 3;

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 3;

FIG. 7 is a cross-sectional view showing a usage state of the connector.

FIG. 8 is a cross-sectional view showing a relationship between a press-fitting portion of a connector and a mounting hole of a building member.

FIG. 9 shows a second embodiment, which is a front view of the connector.

FIG. 10 shows a third embodiment, which is a front view of the connector.

[Explanation of symbols]

 10 Joining tool 20,30 Building member 21,31 Mounting hole 22,32 Seat portion 40 Flange portion 50 Press fit portion 51 Press fit rib 52 Fin 53 Reinforcing rib 54 Free end side circumferential portion 55 Flange side circumferential portion 56 Tip taper Part 57 Adjacent circumference part 58 Base circumference part 60 Recessed part 61 Middle circumference part

Claims (2)

[Claims] 1. A building member, comprising: a flange portion; and a pair of press-fitting portions, which project from the front and back surfaces of the flange portion and are press-fitted into mounting holes respectively provided in a pair of building members joined to each other. In the joining tool, each of the press-fitting portions has a plurality of radially extending press-fitting ribs and fins provided in the space between the adjacent press-fitting ribs, the fins protruding outward from the press-fitting ribs in the radial direction. A fitting for a building member, which is characterized by being provided. 2. The press-fitting portion is located on each of the free end side and the flange side of the press-fitting portion with the fin sandwiched therebetween, and is in contact with the inner peripheral surface of the mounting hole of the building member over the entire circumference. The connector for a building member according to claim 1, further comprising: