JPH0960624A - Board fastener - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fastener which enables a screw member to be fitted easily and firmly by positioning a threaded portion on the surface side of a board or at a portion adjacent thereto. SOLUTION: A fastener is made up of a threaded flange 1 having a female screw portion 6 which is inserted and fitted to a fitting hole B formed in a board A, and a variable sleeve 2 formed integral with the threaded flange 1 or fitted integrally therewith. The variable sleeve 2 has at least two variable blades 8 which are elongated toward the inside of the board A from one end of a cylinder 7, and connected to each other with capable of laying down. The variable blade 8 has a pin pointed insertion piece which is inserted in the back of the board A when the pin pointed is laid down. At the roughly central portion of the blade 8, a press arm 10 is cut and formed which makes the variable blade 8 lay down to the back of the board when a screw 20 is inserted and engaged with the threaded flange 1, and abutting to the press arm 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a board fastener, and more particularly to a board fastener that is inserted from the front of a board such as a gypsum board and tightened on the back surface of the board. .

[0002]

2. Description of the Related Art As a conventional fastener of this type, for example, an expanding sleeve fastener as shown in FIG. 11 is known. This expanding sleeve type fastener is a fastener body for connecting a tubular portion a and a screw tube b, which are inserted into a mounting hole B provided in a board A, through a plurality of, for example, four variable connecting pieces c. d
And is integrally provided on the front end of the tubular portion a of the fastener body d by, for example, spot welding, and the board A is provided on one surface thereof.
It is composed of a flange portion f formed by cutting and raising an insertion claw e inserted toward the side, and an expanding deformation bolt g penetrating the tubular portion a and screwed to the screw barrel b.

The expansion sleeve type fastener thus constructed has the board A with the expansion deformation bolt g attached thereto.
After being inserted into the mounting hole B provided in (see FIG. 11 (a)), the variable connecting piece c is moved to the outer side by gripping the head of the expanding and deforming bolt g with a special jig and pulling it toward you. The flange A and the variable connecting piece c that are expanded and deformed toward each other are sandwiched and clamped to secure the board A (see FIG. 11C). The expansion-deformation bolt g after tightening and fixing is used, and for example, a screw member h such as a hook fitting penetrates the cylindrical portion a and is screwed to the screw cylinder b for use.

[0004]

However, the conventional fasteners of this kind have the following drawbacks.
That is, since it is necessary to use a dedicated special jig, the mounting work becomes complicated.

Since the expansion deformation bolt g is unnecessary,
Waste of members occurs.

Since the screw cylinder b is located on the far side away from the front side of the board A, the mounting of the screw member h is troublesome, and rattling occurs in the screw engagement between the screw member h and the screw cylinder b, so that the screw member h is strong. I can't tighten.

To expand and deform the variable connecting piece c, a certain length is required, and the entire length becomes long.
If the space between the board and the mounting base is narrow, the tip of the fastener may hit an obstacle such as the outer wall board during mounting, which may prevent mounting.

The present invention has been made in view of the above circumstances, and can be simply and firmly tightened without using a special jig, and the screw portion can be positioned on the front side, that is, on the front surface side of the board or a portion close to the board. It is an object of the present invention to provide a fastening tool that enables easy and strong attachment of a screw member.

[0009]

In order to achieve the above object, the fastener of the present invention comprises a threaded flange having a female threaded portion that is inserted into a mounting hole provided in a board, and a threaded flange. The variable sleeve is integrally or integrally provided, and the variable sleeve has at least two variable blades extending from one end of the tubular body toward the inside of the board so as to be able to fall, The wing piece has a tip-shaped insertion piece that is inserted into the back surface of the board when it falls down, and the member that is screwed or inserted into the threaded flange is formed at the substantially center thereof. It is characterized in that a pressing arm for colliding and laying down the variable wing piece on the back surface of the board is cut and raised (claim 1).

In the present invention, the threaded flange may have any shape as long as it has a female screw portion and a flange portion, but preferably, it has a substantially hat-shaped cross section and comprises a collar portion and a hollow cylindrical portion. It is preferable that at least two or more insertion claws to be inserted into the board are provided in a projecting manner on the collar portion, and an internal thread portion is engraved on the inner surface of the tubular portion (claim 2).

Further, it is preferable to form a notch in a portion of the variable wing piece near the cylindrical body (claim 3).

According to the board fastener of the present invention configured as described above, the tubular portion of the threaded flange is mounted in the mounting hole provided in the board, and the flange portion is brought into contact with the surface of the board. By pressing the pressing arm of the variable wing piece with the member screwed into or inserted into the female screw part of the tubular portion and lying down the variable wing piece toward the back side of the board, the insertion claw at the tip of the variable wing piece is boarded. It is inserted on the back side (claim 1). Therefore, the fastener is tightened and fixed while the board is being held by the collar portion and the variable wing piece.

Further, the threaded flange has a substantially hat-shaped cross section, and is composed of a collar portion and a hollow cylindrical portion, and at least two or more insertion claws to be inserted into the board are provided on the collar portion so as to project therefrom. , The threaded flange can be more firmly tightened and fixed to the board. Also, by engraving the female screw portion on the inner surface of the cylindrical portion, the female screw portion can be positioned on the front side, that is, on the front surface side of the board or a portion close to the board, so that the screw member can be easily and firmly attached. The ability to use can be demonstrated quickly. In addition, it is possible to mount when the space between the board and the mounting base is narrow and to use a screw member having a short screw portion (claim 2).

Further, by forming a notch at a portion of the variable blade section near the cylindrical body side, the deformation deformation of the variable blade section can be further ensured (claim 3).

[0015]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. ◎ First Embodiment Fig. 1 is a sectional view of the fastening device of the present invention in a use state of the first embodiment, Fig. 2 is a sectional view of the first embodiment, and Fig. 3 is an exploded sectional view thereof.

The fastener of the present invention comprises a threaded flange 1 inserted into a mounting hole B provided in a board A such as a gypsum board, and a variable sleeve integrally provided in the threaded flange 1. It is mainly composed of 2 and.

The above-mentioned threaded flange 1 is formed in a substantially hat-shaped cross section consisting of a flat plate-shaped collar portion 3 and a hollow cylindrical portion 4, and is inserted into the board A at two opposing positions on the periphery of the collar portion 3. The insertion claw 5 is cut and raised (FIG. 4).
reference). A female screw portion 6 is engraved on the inner surface of the tubular portion 4. In this case, two insertion claws 5 are provided,
The number of insertion claws 5 may be any number as long as it is at least two.

As shown in FIG. 5, the variable sleeve 2 comprises, for example, three variable wing pieces 8 extending from one end of the cylindrical body 7 toward the inside of the board A so as to be able to fall. Further, the variable wing piece 8 has the board A when it falls on its tip.
Is formed with a pointed insertion piece 9 to be inserted into the back surface of the threaded member, and a member which is screwed into the threaded flange 1 such as a screw member 20 having a hook portion 21 is abutted at a substantially central position thereof to be changed. A pressing arm 10 for laying the wing piece 8 on the back surface of the board A is cut and raised.

The variable sleeve 2 constructed as described above.
As shown in FIG. 6, a steel plate 11 punched by a press is rolled into a tubular shape and fixed to the outside of the tubular portion 4 of the threaded flange 1 by fixing means (not shown) such as spot welding. By doing so, it is integrally formed with the threaded flange 1. In this case, the variable wing piece 8 is provided with the notch 12 at a position near the tubular body 7 side so that the variable wing piece 8 is easily deformed, that is, undulated from the tubular body 7. Further, the variable wing piece 8 is bent inward from the vicinity of the cut portion 12, and the insert piece 9 extending to the tip of the variable wing piece 8 through the mountain fold line 13 shown by the alternate long and short dash line becomes the variable wing piece 8. It will be bent at a right angle.

On the other hand, the pressing arm 10 includes the variable wing piece 8
While being cut and raised inward along a valley fold line 15 shown by a broken line provided on the base side of the substantially U-shaped cut line 14 provided at the central portion, the tip end portion thereof has an arc shape or a curl shape ( In the drawing, the case of an arc is shown). The reason why the tip of the pressing arm 10 is bent in an arc shape or a curl shape in this way is that the pressing arm 10 is not deformed (buckled) when it collides with the tip of the screw member 20.
The tip ends of the pressing arms 10 may be close to each other so as not to interfere with each other as shown in FIG. By forming the tip of the pressing arm 10 in a bulge shape as shown by the chain double-dashed line in FIG. 6, the contact area with the screw member 20 can be widened, and the variable wing piece 8 is surely laid down. be able to.

In the above description, the variable wing piece 8 and the pressing arm 10 extend from the tubular body 7 at a right angle, but as shown in FIG. 7, the variable wing piece 8 and the pressing arm 10 are tubular. It may be inclined with respect to the body 7. By inclining the variable wing piece 8 and the pressing arm 10 in this way, the pressing arm 10 is pressed while being directed to the rotation of the screw member 20 screwed into the female screw portion 6 of the tubular portion 4 of the threaded flange 1. The variable wing piece 8 can be more surely deformed to fall over. In this case, the pressing arm 10
By bulging the tips of the two in the shape of a circular arc, the tip-side proximity portions of the three pressing arms 10 can be formed into a substantially tongue-like shape, and the pressing by the abutting of the screw member 20 can be further ensured. Further, in the above description, the case where three variable wing pieces 8 and pressing arms 10 are provided has been described, but the variable wing pieces 8 and the pressing arms 10 do not necessarily have to be three pieces, and may be, for example, at opposing positions. Two variable wings 8 provided
Alternatively, the pressing arm 10 may be used, and any number may be used as long as it is at least two.

Next, the procedure for attaching the fastener of the present invention will be described with reference to FIG. First, as shown in FIG. 2, a fastening tool in which the threaded flange 1 and the variable sleeve 2 are integrally formed is prepared. Then, the tubular portion 4 of the threaded flange 1 is inserted into the mounting hole B by inserting it into the mounting hole B provided in the board A, and the insertion claw 5 provided in the flange 3 is inserted into the board A. (See FIG. 8A).

Next, for example, the screw member 20 having the hook portion 21 is screwed into the tubular portion 4. When the screw member 20 is screwed, the tip of the screw member 20 pushes the pressing arm 10 of the variable blade 8.
The variable wing piece 8 is laid down toward the back surface of the board A (see FIG. 8B).

When the screw member 20 is further screwed in, the variable wing piece 8 is laid down near the back surface of the board A, and the insertion piece 9 at the tip thereof is inserted into the back surface of the board A, and the variable wing piece 8 of the variable sleeve 2 is inserted. And the flange portion 3 of the threaded flange 1 are attracted to each other, and the fastening tool is tightly fixed to the board A while the board A is being held by the variable wing piece 8 and the flange portion 3.

According to the fastener of the present invention configured as described above, the fastener is simply inserted into the tubular portion 4 of the threaded flange 1 without using a special jig. Can be fastened to the board. Also, the mounting hole B
Since the tubular portion 4 of the threaded flange 1 is inserted therein, the female screw portion 6 is located on the front surface side of the board A or a portion close to the board A to facilitate the attachment of the screw member 20 and to firmly attach the screw member 20. The ability to use can be demonstrated quickly. Further, since the female screw portion 6 is located on the front side, that is, on the front surface side of the board A or a portion close to the board A, the fastener can be attached even when the space between the board A and the mounting base is small, and the screw portion The short screw member 20 can be used to attach the fastener.

Second Embodiment FIG. 9 is a sectional view of a second embodiment of the fastener of the present invention, FIG.
0 is a development view of the fastener of the second embodiment.

The second embodiment is a case where the threaded flange and the variable sleeve are integrally formed. That is, as shown in FIG. 10, the tubular body 7, the variable wing piece 8, and the pressing arm 1 which constitute the variable sleeve 2 of the first embodiment.
0, when the insert piece 9 and the notch 12 are punched out by a press, the collar piece 17 corresponding to the collar portion is extended at two places on the lower side of the tubular body 7 through the mountain fold line 16 shown by the alternate long and short dash line, The insertion claw 5 is extended to one side of the brim piece 17 through a valley fold line 18 shown by a broken line to form a developed product of the fastener. Then, after rolling this developed product into a tubular shape and fixing it by spot welding etc.,
The internal thread portion 6 is engraved by tapping on the inner peripheral surface of the tubular body 7 to form a fastener. In the second embodiment, other parts are the same as those in the first embodiment, and thus the same parts are denoted by the same reference numerals and description thereof will be omitted.

As described above, by integrally forming the threaded flange and the variable sleeve, the number of constituent members can be reduced and the cost can be reduced.

Other Embodiments In the above embodiment, the case where the female screw portion 6 is engraved on the tubular portion 4 or the tubular body 7 of the threaded flange 1 has been described, but other than engraving the female screw portion 6, It is also possible to substitute a nut for the female screw portion 6.

In the above embodiment, the screw member 20 having the hook portion 21 has been described.
Needless to say, the screw member 20 may have any shape depending on the purpose of use. Further, in the above-described embodiment, the case where the pressing arm 10 is pressed by screwing the screw member 20 into the female screw portion 6 and the variable wing piece 8 is laid down has been described, but it is not always necessary to use the screw member 20. Alternatively, for example, a rod-shaped jig may abut against the pressing arm 10 to press it.

[0031]

As described above, since the board fastening device of the present invention is configured as described above, the following effects can be obtained.

1) According to the board fastener of claim 1, the tubular portion of the threaded flange is mounted in the mounting hole provided in the board, and the flange portion is brought into contact with the surface of the board to secure the tubular portion of the tubular portion. Insert the insertion claw at the tip of the variable wing piece into the back surface of the board by pressing the pressing arm of the variable wing piece with the member that is screwed or inserted into the female screw portion to lay down the variable wing piece toward the back surface side of the board. Therefore, the fastener can be easily and firmly fastened and fixed to the board without using a special jig.

2) According to the second aspect of the present invention, the threaded flange has a substantially hat-shaped cross section, and is composed of a flange portion and a hollow cylindrical portion, and the flange portion is inserted into the board. Since at least two or more insertion claws are provided so as to project and an internal thread portion is formed on the inner surface of the tubular portion, the threaded flange can be more firmly tightened and fixed to the board. Further, since the female screw portion can be positioned on the front side, that is, on the front surface side of the board or a portion close to the board, the screw member can be easily and firmly attached, and the usage ability can be rapidly exhibited, and This makes it possible to mount when the space between the board and the mounting base is narrow and to use a screw member having a short screw portion.

3) According to the board fastening device of the third aspect, since the notch is formed in the portion of the variable blade piece near the cylindrical body side, in addition to the above 1) and 2), The lodging deformation can be further ensured.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a usage state of a first embodiment of a board fastening device of the present invention.

FIG. 2 is a cross-sectional view of the fastener of the first embodiment.

FIG. 3 is an exploded cross-sectional view of the fastener of the first embodiment.

FIG. 4 is a plan view (a), a sectional front view (b) and a side view (c) of a threaded flange according to the present invention.

FIG. 5 is a plan view of a variable sleeve according to the present invention (a).
FIG. 3B is a sectional view (b) taken along line XX.

FIG. 6 is a development view of a variable sleeve.

FIG. 7 is another development view of the variable sleeve.

FIG. 8 is a cross-sectional view showing a procedure for attaching the fastener.

FIG. 9 is a cross-sectional view of a second embodiment of the fastening tool of the present invention.

FIG. 10 is a development view of the fastener according to the second embodiment.

FIG. 11 is a cross-sectional view (a) of a conventional fastener before attachment, a Y-part enlarged cross-sectional view (b) thereof, and a cross-sectional view (c) after attachment.

[Explanation of symbols]

 1 Flange with screw 2 Variable sleeve 3 Collar part 4 Cylindrical part 5 Insertion claw 6 Female screw part 7 Cylindrical body 8 Variable wing piece 9 Insertion piece 10 Pressing arm 12 Notch part 17 Collar piece (flange part) A board B mounting hole

Claims (3)

[Claims] 1. A threaded flange having a female threaded portion inserted into a mounting hole provided in a board, and a variable sleeve integrally or integrally provided with the threaded flange, wherein the variable sleeve has a tubular shape. At least two variable blades extending from one end of the body toward the inside of the board are arranged so as to be able to fall, and the tip of the variable blade is inserted into the back surface of the board when it falls. And a pressing arm for collapsing the variable wing piece on the back surface of the board by abutting against a member screwed or inserted into the threaded flange. A fastener for a board, which is provided. 2. A threaded flange having an internal thread portion inserted into a mounting hole provided in a board, and a variable sleeve integrally or integrally provided with the threaded flange, wherein the threaded flange has a cross section. It has a substantially hat shape and is composed of a collar portion and a hollow cylindrical portion. At least two or more insertion claws to be inserted into the board are projected on the collar portion, and an internal thread portion is engraved on the inner surface of the cylindrical portion. The variable sleeve has at least two variable wing pieces extending from one end of the tubular body toward the inside of the board so as to be able to fall, and the variable wing pieces are laid down at their tips. A pointed insertion piece to be inserted into the back surface of the board is formed, and the variable wing piece is attached to the back surface of the board by abutting on a member screwed or inserted into the threaded flange at approximately the center thereof. Cut and fold down the pressing arm A fastener for a board, characterized in that it is provided by. 3. The board fastener according to claim 1 or 2, wherein a notch is formed in a portion of the variable wing near the tubular body side.