JP2009092229A - Auxiliary material of screw tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein an auxiliary material, screwed in a through-hole prearranged from a surface to a reverse surface of an internal facing material or an external facing material used for a wall of a conventional building, occasionally damages a surface of the wall at work. <P>SOLUTION: This auxiliary material 1 assists a screw tool 6 screwed in the through-hole 10 prearranged over the reverse surface from the surface of the internal facing material and the external facing material being the wall of the building, and has a seat part 2 formed of one metallic plate and having an opening 7 capable of inserting the screw tool 6, and a plate-like part 3 capable of abutting on an inner peripheral surface of the through-hole 10, and is characterized in that the plate-like part 3 is peripherally arranged in an outer peripheral edge part of the seat part 2, and is formed by bending in an L shape so that an end part on the opposite side of the seat part 2 can be locked on the reverse surface of the wall. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an auxiliary material for a screw that is screwed into a through-hole provided in advance from the front surface to the back surface of an interior material or exterior material that becomes a wall of a building.

  Conventionally, as an auxiliary material for a screw, an auxiliary material that is less than the entire circumference of the inner peripheral surface is arranged along the inner peripheral surface of the lower hole formed in the member into which the screw is screwed, and the screw screwed into the lower hole is provided. A method is known in which both the member to be screwed and the auxiliary material are bitten and fastened. (For example, see Patent Document 1)

Furthermore, as an auxiliary material for the screw tool, the conventional cross-section has a cylindrical shape, and the internal hole is at least halfway eccentric from the tip side, and a slit along the axial direction from the head side is provided on the peripheral wall of the trunk portion. The provided configuration is well known. (For example, see Patent Document 2)

  Patent Publication No. 2502253   Patent Publication No. 2855059

  However, since the configuration described in Patent Document 1 exerts a strong holding force by applying uniform pressure to the inner peripheral surface of the lower hole, a relatively large load is applied compared to other parts during drilling, and the brittleness is weak. Since there is a possibility that the building material surface portion of the prepared hole is damaged, the operator has a very high drilling ability by performing a hit, which is currently generally used in drilling the prepared hole. However, the hammer drill that makes the building material surface extremely brittle cannot be used, and there has been a problem that a drill driver that has been used in the past and that does not perform hitting and has a low drilling ability must be used.

  And since the composition given in the above-mentioned patent documents 2 serves as composition which exhibits holding power by applying a big pressure locally to the inner peripheral surface of the lower hole of the building material core part, the building material surface part It is possible to perforate the prepared hole using the hammer drill without applying a load to the fragile part, but as described in claim 1 of Patent Document 2, the cross section is cylindrical and the inner hole is at least Since it consists of the trunk | drum which is eccentric on the front end side from the middle, the inserted screw is inserted in the state eccentric from the axial center of the lower hole. Therefore, it is necessary to shift in advance the position of the screw insertion hole of the attachment and the lower hole provided in the building material, and there is a problem that the work procedure is increased and the burden on the operator is increased accordingly.

  In order to solve the above-mentioned problems, the invention according to claim 1 of the present application assists a screw that is screwed into a through-hole provided in advance from the front surface to the back surface of an interior material or exterior material serving as a building wall. In the auxiliary material having a seat portion formed of a single metal plate and having an opening through which a screw can be inserted, and a plate-like portion capable of contacting the inner peripheral surface of the through-hole, the plate-like portion Is configured to be bent at the outer peripheral edge of the seat and be bent in an L shape so that the end opposite to the seat can be locked to the back surface of the wall. .

Further, the invention of claim 2 is configured such that an end portion on the opposite side of the seat portion in the plate-like portion of the auxiliary material is bent toward the outer periphery of the seat portion. .

Furthermore, the invention of claim 3 is configured such that the seat portion of the plate-like portion and the substantially central portion of the end portion on the opposite side of the seat portion are curved inwardly at the outer peripheral edge portion of the seat portion. Is.

  The auxiliary material according to claim 1 of the present application is formed of a single metal plate, and has a seat portion having an opening into which the screw can be inserted, and the through hole inner peripheral surface. In the auxiliary material having a plate-like portion, the plate-like portion is rimmed on the outer peripheral edge of the seat portion, so that the length can be freely adjusted according to the thickness of the interior material and the exterior material used as the walls of the building. When the screw is screwed in by bending and forming an end opposite to the seat portion into an L shape so that it can be locked to the back surface of the wall, the auxiliary material can be provided. Is not only a frictional force generated by tightly compressing the inner peripheral surface of the through-hole, but also a strong mechanical force by hooking the L-shaped end portion against the back surface of the wall. It is possible to exert a fixing force.

In other words, the configuration according to claim 1 of the present application can exert a strong mechanical fixing force by hooking the L-shaped end portion against the back surface of the wall. Since it is not necessary to apply a large pressure to the inner peripheral surface of the hole and obtain a large frictional force, it is sufficient without applying a load to the surface portion of the wall that has become relatively fragile due to impact during drilling. It is possible to exert a fixing force.

Moreover, it was set as the structure which bent and formed the edge part on the opposite side to the said seat part in the plate-shaped part of the said auxiliary material of Claim 2 of this application toward the outer-periphery edge part of the said seat part. Thus, the end portion bent in the L-shape does not intersect with the screw tool, so that the work can be performed without worrying about the length of the screw tool to be used. Since it is not necessary to prepare tools, the work can be performed quickly.

Furthermore, the structure which curves from the substantially center part of the said seat part of the said plate-shaped part and the edge part on the opposite side to the said seat part inward of the outer-periphery edge part of the said seat part of Claim 3 of this application Thus, when the screw is inserted, the hole diameter of the through hole becomes small in the curved portion of the auxiliary material, and the screw enters from the position while expanding the auxiliary material outward from the outer peripheral edge. . Therefore, a repulsive force is always applied to the screw tool to return the auxiliary material to its original shape, and the screw tool can be prevented from loosening, and the screw tool is tightly pressure-bonded to the inner peripheral surface of the through hole. Therefore, a larger fixing force can be exhibited.

  In the auxiliary material according to claim 1 of the present application, it is preferable that the bending angle of the end portion bent in the L shape is 90 ° or more.

By doing so, a gap is formed between the bent portion and the back surface of the wall, and a gap is generated between the end portion bent in the previous L-shape and the back surface of the wall generated due to an error in the thickness of the fastener. Can be prevented, and a fixing force can be reliably generated.

Further, in consideration of the general wall thickness of 14 mm to 25 mm, the auxiliary material extends from the screw insertion surface of the seat portion to the bent portion of the end portion bent in the L shape. The distance is preferably formed to be approximately 15 to 30 mm.

Still further, the seat portion according to claim 1 of the present application is made to stand out after completion of the work while preventing the auxiliary material from falling down with respect to a through-hole generally provided at about 3 mm to 8 mm. In order to avoid this, it is preferable that the diameter is approximately 10 mm.

And the width | variety of the said plate-shaped part of Claim 1 of this application sets the said plate-shaped part at the time of inserting the said screw tool by setting to 3/4 or less with respect to the diameter of the said through-hole. The plate-like portion can be smoothly operated without obstructing the entry of the screw and the width of the plate-like portion is 1/8 or more of the diameter of the through-hole. The portion can be fixed to the inner peripheral surface of the through hole by a sufficient frictional force.

Moreover, in the structure which formed the edge part on the opposite side to the said seat part according to Claim 2 of this application toward the outer-periphery edge part of the said seat part, the side opposite to the said seat part formed by bending It is preferable that the length of the end portion is set to about 1 mm to 10 mm because it can be easily inserted into the through hole and can exhibit sufficient strength.

Furthermore, the structure which curves from the substantially center part of the said seat part of the said plate-shaped part and the edge part on the opposite side to the said seat part inward of the outer-periphery edge part of the said seat part of Claim 3 of this application The curved portion of the plate-like portion is preferably provided so as not to exceed the axis of the screw insertion hole of the seat portion. By doing so, when inserting the screw tool, the screw tool can be screwed straight into the through-hole into which the auxiliary material has been inserted without excessively generating screwing resistance.

More specifically, it is desirable that the starting point of the curved portion is located at a position approximately 7 to 15 mm away from the end portion on the seat portion side of the plate-like portion in consideration of the general wall thickness.

However, in the configuration in which the seat portion is curved inwardly at the outer peripheral edge portion, when the curved portion of the plate portion exceeds the axis of the screw insertion hole of the seat portion, when the screw is screwed, Since the tool will enter at an angle, it will not be possible to work with the engaging part of the tool and screw aligned on the axis, resulting in poor workability and damage to the tool. It will be incurred.

  Hereinafter, embodiments of the present application will be described with reference to the drawings.

  FIG. 1 is a perspective view showing an example of an embodiment of the auxiliary material.

  FIG. 2 is a cross-sectional view showing how the auxiliary material is attached before work.

  FIG. 3 is a cross-sectional view showing how the auxiliary material is attached after work.

  The auxiliary material 1 according to the embodiment shown in FIG. 1 assists a screw that is screwed into the through-hole provided in advance from the front surface to the back surface of an interior material or exterior material serving as a wall of a building. In the auxiliary member 1 having the seat portion 2 formed of a plate and having an opening through which a screw can be inserted, and the plate-like portion 3 capable of coming into contact with the inner peripheral surface of the through hole, the plate-like portion 3 is It is characterized in that an edge portion 4 which is provided at the outer peripheral edge of the seat portion 2 and which is opposite to the seat portion 2 is bent and formed in an L shape so that it can be locked to the back surface of the wall. To do.

Further, as shown in FIG. 1, the end portion 5 of the end portion 4 is configured to be folded back substantially in parallel with the axis of the opening 7 through which the screw 6 provided in the seat portion 2 can be inserted. Thus, when the screw 6 is inserted, the end portion 4 bent into the L-shape is in line contact with the back surface of the wall, which greatly increases the crimping force per unit area. The fixing force of the auxiliary material 1 can be greatly increased.

Further, as shown in FIG. 1, by providing an arc-shaped protrusion 8 on the plate-like portion 3 of the auxiliary material 1, when the screw 6 is screwed, the screw 6 is screwed into the through-hole provided in the wall. It will bite in the rotation direction of the tool 6, and the problem that the said auxiliary material 1 raise | generates a co-rotation phenomenon and it becomes impossible to work can be eliminated.

  Next, as shown in FIGS. 2 and 3, the end 4 on the opposite side of the seat 2 in the plate-like portion 3 of the auxiliary material 1 is directed outwardly from the outer peripheral edge of the seat 2. As a result of the bending, the end 4 bent in the L-shape does not intersect the axis of the screw 6 and the work can be performed without worrying about the length of the screw 6 to be used. Since it can be performed, it is possible to divert the screw 6 used for other work, and the workability on site and the convenience of material management work can be greatly improved.

Further, as shown in FIGS. 2 and 3, from the seat portion 2 of the plate-like portion 3 and the substantially central portion 9 of the end portion 4 formed to be bent in the L shape on the opposite side of the seat portion 2. When the auxiliary material 1 is inserted into the through-hole 10 provided in the wall, the seat 2 is bent inwardly at the outer peripheral edge portion. In addition to preventing the end 4 from being caught on the wall and preventing the problem of insertion, the screw 6 to be screwed in always receives a constant pressure from the curved plate-like portion 3. In addition, it has the effect of preventing loosening of the screw 6 after the work is completed.

The auxiliary material 1 is preferably made of stainless steel in consideration of corrosion resistance, and more preferably, a material having a spring property such as SUS301 is preferably used in order to improve adhesion to the screw 6. .

  The perspective view which shows an example of embodiment of an auxiliary material   Sectional view showing the state of attachment of auxiliary materials before work   Sectional view showing the state of attachment of auxiliary materials after work

Explanation of symbols

1. Auxiliary material Seat part 3. Plate part 4. 4. End portion bent into an L shape Termination part 6. Screw 7. Opening 8. 8. Arc-shaped protrusion Central part 10. Through hole

Claims (3)

  It assists a screw that is screwed into a through-hole provided in advance from the front surface to the back surface of the interior and exterior materials used as the walls of the building, and is formed of a single metal plate and has an opening through which the screw can be inserted. In the auxiliary member having a seat portion and a plate-like portion capable of coming into contact with the inner peripheral surface of the through hole, the plate-like portion is provided on an outer peripheral edge of the seat portion, and an end opposite to the seat portion. The auxiliary material is formed by bending the portion into an L shape so as to be locked to the back surface of the wall.   2. The auxiliary material according to claim 1, wherein an end portion of the auxiliary material on the side opposite to the seat portion is formed by being bent toward an outer peripheral edge portion of the seat portion.   The said seat part of the said plate-shaped part and the substantially center part of the edge part on the opposite side to the said seat part are curved to the outer periphery part inside of the said seat part, It is characterized by the above-mentioned. Fastening aids.

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