JP2001107929A - Driving fastener - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a leg opening type driving fastener free to pull out without breaking a concrete wall, etc., by using a tool such as a bar, after driving it to fix equipment, etc. SOLUTION: It is possible to extract one leg body 2 and to remove equipment B, etc., when the other leg body is extracted by engaging a tool D for extraction with an engagement part 21 after driving a fastener to fix the equipment B, etc., by respectively providing head parts 4, 5 on one ends of two leg bodies 2, 3 to be accumulated on each other, providing a projected part 6 for leg opening to be projected to the overlapped surface side on the head end side of the one leg body 2, forming the both leg bodies 2, 3 by tightly binding them by a washer 7 so that a head end part of the other leg body 3 to be a leg opening member is not overlapped on the projected part 6 for leg opening and so that the head part 5 of the other leg body 3 is positioned above the head part 4 of the one leg body 2 and providing the engagement part 21 of the tool D for extraction such as a bar, etc., on the head part 5 of the aforementioned other leg body 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an open-leg type driving fastener used for fixing equipment and the like to ALC, concrete, blocks, etc.
The present invention relates to a driving fastener capable of pulling out ALC, concrete, blocks and the like without breaking them.

[0002]

2. Description of the Related Art FIGS. 4 and 5 show ALC, concrete,
1 shows a conventional open leg type driving fastener used for fixing equipment and the like to a block and the like.

[0003] A split-type driving fastener 1 of a first example shown in FIGS. 4 (a) and 4 (b) has a flat plate-shaped head 4 at one end of two legs 2 and 3 which are overlapped with each other. , 5
A leg-opening protrusion 6 is provided on the one end of the leg 2 so as to protrude toward the overlapping surface, and the two legs 2 and 3 are connected to each other. It is formed tightly by a washer 7 so that it does not overlap with the part 6 and the head of the other leg 3 is located above the head 4 of the one leg 2.

[0004] In order to fix equipment or the like B to a concrete wall A with the fastener 1, a pilot hole C is previously formed in the concrete wall A.
The fastener 1 is inserted into the pilot hole C from the equipment B and the like, and the washer 7 is brought into contact with the equipment B and the other leg 3 is driven in this state. Reference numeral 3 denotes a leg-opening state in which one of the legs 2 runs on the leg-opening projection 6 and bends, and the tip of the leg 2 enters the concrete.
Reference numeral 3 indicates a state in which the equipment B is fixed to the concrete wall A with the heads 4 and 5 in the state of being prevented from falling off.

A split-type driving fastener 1a of a second example shown in FIGS. 5 (a) to 5 (c) has a body 13 having a head 11 at one end and a hole 13 extending from the head 11 in the axial direction. It has a leg member 15 in which the tip side of the body 12 is divided into a plurality of parts by slits 14, and a head 16 at one end, and is driven into the hole 13 of the leg member 15 so that the tip side of the body 12 is It is formed by a shaft-like member 17 to be opened.

In order to fix the equipment or the like B to the concrete wall A with the fastener 1a, a pilot hole C is drilled in the concrete wall A in advance, and the leg member 15 is inserted from the equipment or the like B into the pilot hole C. When the head 11 is brought into contact with the equipment B or the like, and the shaft-like member 17 is driven into the hole 13 of the leg member 15 in this state, the distal end of the leg member 15 is in a leg-open state, and the leg member 15 is prevented from falling off. In this state, the equipment B and the like are fixed to the concrete wall A by the head 11.

The split-type driving fastener 1a includes a hemispherical type having the head 11 of the splitting member 15 as shown in FIG. 5 (a) and a dish-shaped type as shown in FIG. 5 (c). In any of the heads 11, the shaft-like member 17
Head 16 sinks.

[0008]

However, the above-mentioned conventional open-leg type driving fasteners, in any of the types, can be used in a driving state in which the equipment B is fixed.
The lower surface of the head 4, 5 or 11 abuts against the equipment B or the like directly or via the washer 7, and no gap is formed on the lower surface. 3 and the shaft-like member 17 cannot be pulled out, so that the driving fastener cannot be pulled out, and if it is desired to remove equipment or the like for some reason after driving, it can only be removed by breaking concrete. There's a problem.

An object of the present invention is to provide an open-leg-type driving fastener which can be pulled out without breaking concrete or the like by using a tool such as a bur after driving with fixing equipment and the like. .

[0010]

Means for Solving the Problems In order to solve the above-mentioned problems, the invention of claim 1 comprises a combination of two members having a head, and one of the members is driven by driving one of the members. In a driving fastener in which a member is opened, a configuration is employed in which an engaging portion of a pulling tool is provided on the head of one of the members.

According to a second aspect of the present invention, in the first aspect of the present invention, the driving fastener has a head provided at one end of each of the two legs which are overlapped with each other, while one end is provided on the side of the overlapping surface at the tip end of the leg. A protruding leg projection is provided, and both legs are formed so that the tip of the other leg, which is a leg-spreading member, does not overlap with the projection for leg split, and the head of the other leg is the head of one leg. In this case, a structure is employed in which the engaging portion of the pulling tool is provided on the head of the other leg so that the engaging portion is provided on the head of the other leg.

According to a third aspect of the present invention, in the first aspect of the present invention, the driving fastener is provided with a hole extending in the axial direction from the head in a body having a head at one end, and a slit is formed on a tip side of the body. And a shaft-shaped member having a head at one end and having a leg opened at the tip end of the trunk by being driven into a hole of the leg-opened member. This adopts a configuration in which an engaging portion of a drawing tool is provided in the portion.

According to a fourth aspect of the present invention, in the first to third aspects of the present invention, the engagement portion is formed by a concave step provided on a part of the back side of the head. is there.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

The driving fastener of the first embodiment shown in FIGS. 1 and 2 has basically the same structure as that of the above-described first example of the prior art (FIG. 4). The same parts as in the example will be described with the same reference numerals.

In the driving fastener 1, two legs 2, 3 to be overlapped with each other are formed using a semi-circular or square shaft material having a flat overlapping surface, and one end of each of the overlapping surfaces is provided at one end thereof. The heads 4 and 5 are provided so as not to protrude to the side, and the other end is a tip portion, and both legs 2 and 3
And a washer 7 such that the tip of the other leg 3 does not overlap the projection 6 for leg opening, and the head 5 of the other leg 3 is located above the head 4 of the one leg 2. The other leg 3 is provided with an engaging portion 21 of a pulling tool such as a bur on the head 5 of the other leg 3.

The leg-opening projection 6 provided on the one leg 2 is
In the case of FIG. 1 (a), the leg-opening projection 6 is integrally protruded from the one leg 2, but as shown in FIG. 1 (c), the upper half of the one leg 2 is made thinner, and the lower half is formed. The leg may be made thicker, and the leg-opening projection 6 may be formed by an arc-shaped inclined surface provided in the middle thereof, while the distal end of the leg 3 has a shape corresponding to the inclined surface.

FIG. 2A shows a first example of the head 5 having the engaging portion 21. The head 5 has a substantially semicircular plate whose outer peripheral surface is an inclined surface projecting upward and outward. The inclined surface is formed on the engaging portion 21 with respect to the tip of the drawing tool D.
It has become.

The head 5 of the second example shown in FIG. 2 (b) is formed in a thick, substantially semicircular plate-like shape, and is provided with concave notches at both ends on the lower surface thereof so that the engaging portion 21 is formed. It is what it was.

The head 5 of the third example shown in FIG.
Is formed into a thick, substantially semicircular plate-shaped plate, and the engagement portion 21 is formed by providing a concave notch at the center lower portion of the arc-shaped outer peripheral surface.

Driving fastener 1 of the first embodiment
Has a configuration as described above. In order to fix the equipment B or the like to the concrete wall A, a pilot hole C is drilled in advance in the concrete wall B, and the fastener 1 is inserted into the preparation hole C from the equipment B or the like. If the washer 7 is brought into contact with the equipment B or the like, and the other leg 3 is driven in this state, the other leg 3 entering the prepared hole C rides on the leg-opening projection 6 of the one leg 2 and bends. The leg is in the open state with the tip entering the concrete, and both legs 2 and 3
Is locked, and the equipment B is fixed to the concrete wall A by the heads 4 and 5.

When the above-mentioned fixed equipment B or the like is to be removed, as shown in FIG. 1B, a pulling tool D such as a bur is attached to an engaging portion 21 provided on the head 5 of the other leg 3. The distal end is engaged, and the pulling-out tool D is tilted so as to bend in the pulling-out direction of the other leg 3 with the contact portion with the washer 7 as a fulcrum.

On the other hand, the leg 3 has the head 5
The head 5 is lifted up from the washer 7 by being pulled in the pulling direction at the tip of the head 5, and then, if the head 5 is pinched and pulled by a separately prepared pinching tool, the head 5 is pulled out along the driving shape. That is, when the other leg 3 is pulled out, the one leg 2 can be easily pulled out by hand from the driving hole of the concrete wall A, and the equipment B can be removed.

In the driving fastener 1 as described above, the other leg 3 which is the driving side when the equipment B or the like is fixed.
Is to be opened by driving, but on the other hand, it is in a condition that the leg 2 is pulled out first along the shape of the opened leg. However, the one leg 2 is in a condition in which it is impossible to pull out the other leg 3 because the projection 6 for the leg interferes with the other leg 3. 5
It is meaningful to provide the engaging portion 21 of the punching tool in
As a result, the other leg 3 is loosened in the pulling-out direction before the one leg 2, and then the other leg 3 is first pulled out.
Next, if the one leg 2 is removed, the equipment B can be removed.

FIG. 3 shows a driving fastener according to a second embodiment. The driving fastener of the second embodiment has a structure basically similar to that of the above-described second conventional example (FIG. 5), and the same parts as those of the second conventional example are denoted by the same reference numerals. A description is given below.

The driving fastener 1a has a body portion 12 having a head portion 11 at one end, a hole 13 extending in the axial direction from the head portion 11, and the tip side of the body portion 12 is divided into a plurality of parts by slits 14. A member 15 and a head 16 at one end,
It is formed by a shaft-like member 17 that is driven into the hole 13 of the leg-spreading member 15 to open the front end side of the body 12.

The head 11 provided on the body 12 has a disk shape with a flat upper surface, and the head 16 provided on the shaft-like member 17 is formed as a plate head or a round plate head, and is expanded toward the upper end. The tapered outer peripheral surface is the engaging portion 21 of the drawing tool D.

The head 16 provided on the shaft member 17 has a diameter equal to or less than the diameter of the head 11 provided on the body 12.

In order to fix the equipment B or the like to the concrete wall A with the fastener 1a of the second embodiment, a pilot hole C is drilled in advance in the concrete wall A, and the leg is opened from the equipment B or the like to the pilot hole C. The member 15 is inserted and its head 11 is brought into contact with the equipment B or the like.
, The tip of the leg-spreading member 15 is in a leg-spreading state,
The opening leg member 15 is in a state of being prevented from falling off, and the equipment B etc.
In step 1, it is fixed to the concrete wall A.

When removing the above-mentioned fixed equipment B or the like, as shown in the figure, the tip of a pulling tool D such as a bur is engaged with an engaging portion 21 provided on the head 16 of the shaft-like member 17. The pulling tool D is tilted so that the shaft member 17 is pulled in the pulling direction of the shaft member 17 with the contact portion with the head 11 provided on the body 12 as a fulcrum.

The shaft member 17 is lifted from the head 11 provided on the body 12 by pulling the head 16 in such a manner that the head 16 is prying in the pulling direction at the tip of the tool D for pulling out. If the head 16 is pinched and pulled by the tool, it will be pulled out from the inside of the trunk 12, and if the shaft-like member 17 is pulled out, there will be no restraint on the opened part of the leg-spreading member 15, and the concrete wall When the leg-opening member 15 is pulled out from the driving hole of A, the opened part closes out along with the driving hole and comes out, so that the equipment B or the like can be removed.

In the driving fastener 1a as described above, the shaft-like member 1 which is the driving side when the equipment B is fixed is used.
In the condition 7, the distal end of the leg-spreading member 15 is opened by driving, but the condition is such that the leg-spreading member 15 is pulled out first. However, since the leg member 15 is restricted by the shaft member 17 at the tip of the leg member, it cannot be pulled out beyond the shaft member 17. It is meaningful to provide the engaging portion 21 of the extraction tool at 16, whereby the shaft member 17 is loosened in the extraction direction before the opening member 15, and then the opening member 15 is extracted. In this case, the equipment B can be removed.

[0033]

As described above, according to the present invention, it is possible to pull out a concrete fastener or the like by using a tool such as a bur after the fastener with the fixed equipment and the like is driven in the open-leg type fastener. It becomes possible to remove equipment and the like after fixing.

[Brief description of the drawings]

FIG. 1A is a front view showing a first embodiment of an open-leg type driving fastener, FIG. 1B is a longitudinal sectional view showing a driving use state of the fastener, and FIG. 1C is one of the fasteners. Front view showing another example of a projection for a leg provided on a leg body.

FIGS. 2A to 2C are perspective views showing examples of a head having different engaging portions of a drawing tool.

FIG. 3 is a front view showing a second embodiment of the split-type driving fastener;

FIG. 4 (a) is a front view showing a first example of a conventional split-type driving fastener, and FIG. 4 (b) is a longitudinal sectional view showing a driving use state of the fastener.

5 (a) is a front view showing a second example of a conventional open-leg type driving fastener, FIG. 5 (b) is a longitudinal sectional view showing the driving use state of the fastener, and FIG. 5 (c) is the fastener head Longitudinal sectional view showing a driving use state showing a different example of

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1a Driving fastener 2 One leg 3 The other leg 4, 5 Head 6 Leg-opening projection 7 Washer 11 Head 12 Body 13 Hole 14 Slit 15 Leg-opening member 16 Head 17 Shaft member 21 Engagement Department

Claims (4)

[Claims] 1. A driving fastener, comprising a combination of two members having heads each other and driving one of the members to open one of the members, engages a pulling tool on the head of one of the members. Driving fastener characterized by having a joint. 2. The driving fastener according to claim 1, wherein a head is provided at one end of each of the two legs which are overlapped with each other, and a projection for an open leg is provided at a tip end side of each of the legs to project toward an overlapping surface. With the washer so that the tip of the other leg, which serves as the leg-spreading member, does not overlap the projection for leg-spreading, and the head of the other leg is positioned above the head of the one leg. The driving fastener according to claim 1, wherein the fastener is formed in a bundle, and an engaging portion of a pull-out tool is provided on a head of the other leg. 3. An opening leg member in which the driving fastener is provided with a hole extending in the axial direction from the head in a body having a head at one end, and a tip end side of the body is divided into a plurality of slits by a slit. A shaft-shaped member having a head and opening the distal end side of the trunk by being driven into a hole of the leg-spreading member; and an engaging portion for a pull-out tool is provided at the head of the shaft-shaped member. The driving fastener according to claim 1, wherein: 4. The driving fastener according to claim 1, wherein the engaging portion is formed by a concave step portion provided on a part of the back surface side of the head.