JP2002372025A - Spiral washer used in mounting bracket, and bracket mounting device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spiral washer used in mounting a bracket on a wall board such as a plaster board, and a bracket mounting device capable of surely mounting the bracket. SOLUTION: This spiral washer is formed by spirally blanking a thin plate material having spring elasticity, and is successively screwed in an insertion hole penetrated through a wall plate mounted on a front face of a concrete wall face at constant interval while axially drawn and deformed to be fitted from the front surface side to the rear surface side of the wall board. The washer is held on a position of the insertion hole by a holding cord mounted on the spiral washer, a locking member of an anchor bolt provided with the rotatable landscape locking member on its tip part, is inserted from a hole of a mounting part of the bracket to a bolt insertion port of the spiral washer in the longitudinal direction along the bolt, then the locking member is laterally expanded, the spiral washer is elastically pressed to the rear face of the wall board by fastening the bolt, and the mounting part of the bracket is fixed to the surface side of the wall board.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handrail using an anchor bolt having a rotatable locking piece at a tip end thereof on a wall plate such as a gypsum board installed at a predetermined interval in front of a concrete wall surface. To provide a spiral washer used when mounting a bracket for mounting a card rail or a card rail, and a mounting device using the washer.

[0002]

2. Description of the Related Art A gypsum board or a gypsum board having a thin plate or a metal plate attached to the surface side thereof (hereinafter referred to as a wall plate) is installed on the front side of a concrete wall surface. When a bracket for attaching a handrail or a guard rail is attached using an anchor bolt having a rotatable horizontally long locking piece at the tip end, a lip groove is formed between the concrete wall surface and the wall plate as shown in FIG. This has been practiced by installing steel (C-shaped steel) and expanding the locking pieces of the anchor bolts laterally in the grooves of the C-shaped steel.

[0003]

In the conventional bracket mounting apparatus shown in FIG. 11, although the bracket is securely mounted on the front side of the wall plate, it takes time and effort to install the C-shaped steel. In addition to this, the cost is increased, and the mounting position of the bracket is limited to the position where the C-shaped steel is provided.

Therefore, in the present invention, it is convenient to use a bracket for mounting a handrail or a guard rail on the front side of a wall plate by using an anchor bolt having a horizontally long locking piece rotatable at the distal end. It is intended to provide a simple spiral washer and a mounting device.

[0005]

SUMMARY OF THE INVENTION The present invention provides a spring elastic member having a thickness of 0.2 to 0.5 mm and a Vickers hardness of 25 mm.
Using a thin plate material of 0 to 380, a spiral washer having a bolt insertion hole at the center thereof is punched in a spiral shape, and a torsion washer is provided near a terminal end of the inner spiral band portion with a strong thin holding string attached thereto. The spiral washer part of the spiral washer is stretched and deformed in the axial direction as a whole, and from the beginning of the outer peripheral spiral part, it is screwed into the through-hole that penetrates into the wall plate of the installation at a fixed interval in front of the concrete wall surface. The whole spiral band portion is fitted from the front surface side to the rear surface side of the wall plate by sequentially turning in. Then, the portion of the holding string existing on the surface side of the wall plate is pulled to hold the washer at the position of the insertion hole. Then, after inserting the locking piece of the anchor bolt in the vertical direction along the length direction of the bolt toward the bolt insertion hole of the spiral washer, the locking piece is spread in the horizontal direction, and both wing portions thereof are
It locks to the outer peripheral band portion at the tip that is conically expanding. Then, after fitting the mounting portion of the bracket to the anchor bolt portion protruding from the surface of the wall plate, screw the nut,
By tightening the nut, the spiral washer is pulled toward the back surface of the wall plate by the locking piece of the anchor bolt, and is elastically pressed against the back surface of the wall plate. Is fixed to the front side of the wallboard.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a plan view showing a state where the auxiliary handrail is installed in a bathroom, FIG. 2 is an enlarged vertical sectional side view of a main part of the attachment part, and FIG. 3 is a plan view of a spiral washer. As a thin plate having spring elasticity, A stainless steel strip having a thickness of 0.3 mm and a Vickers hardness of 310 is punched in a spiral shape so as to have a bolt insertion port 2 in the center, and a tough and close to the end 1A of the inner circumferential spiral belt portion. A spiral washer 1 was formed by attaching a holding cord 3 made of an elongated fiber.

The band width of the spiral band portion of the spiral washer is such that the width of the inner band portion is narrow and about 3 to 4 mm wide, and the width of the outer band portion is wide and about 4 to 5 mm wide. A gap of about 2 mm is provided between the strips, and the spiral is formed in about 2.5 turns, and the opening of the bolt insertion hole at the center is about 20 mm in diameter.

Then, while the spiral band portion of the spiral washer 1 is stretched and deformed as a whole in the axial direction, the thickness is set at a predetermined distance from the front end 1B of the outer peripheral spiral band portion to the front surface of the concrete wall surface. A stainless steel plate having a thickness of 0.6 mm is bonded to the front surface of a 12 mm gypsum board, and is sequentially screwed into an insertion hole 5 penetrated through the wall plate 4, so that the entire swirl band portion is the surface of the wall plate 4. Fit from the side 4A to the back side 4B.

Even if the spiral washer 1 is fitted into the back surface 4B of the wall plate 4, the other end of the elongated holding cord 3 having one end fixed near the end of the inner spiral band portion of the washer 1 7 hangs down on the front side 4A of the wall plate 4, and when the string is pulled with the holding string portion, the spiral washer 1 is inserted into the insertion hole 5 with the spiral band portion expanded in a conical shape as shown in FIG. Is held in the position.

With respect to the spiral washer 1 held in such a state, the anchor bolt 6 provided with a horizontally long locking piece 7 which is rotatable at the distal end is shown in FIG.
After the locking piece 7 is vertically inserted along the axial direction of the anchor bolt 6 and inserted into the bolt insertion opening 2 of the spiral washer 1, the anchor bolt is moved up and down or rotated, or the tip of the locking piece 7 When it hits the concrete wall surface 8 or the like, the locking piece 7 rotates and spreads in the lateral direction, and becomes T-shaped with respect to the shaft portion of the anchor bolt, as shown in FIG.
The two wing portions are engaged with the open band portion at the tip of the conical swirling washer.

After the locking pieces 7 are spread in the lateral direction, the mounting portions 10 of the brackets 9 are fitted to the anchor bolts 6 projecting from the surface of the wall plate 4, and then the nuts 11 are screwed. When the nut 11 is tightened, the spiral washer 1 which has been conically expanded by the locking piece 7 is gradually drawn toward the back side of the wall plate 4 while resisting its spring elasticity, as shown in FIG. As described above, the mounting portion 10 of the bracket 9 is pressed against the back surface of the wall plate 4 against the resilient force, and is pressed against and fixed to the front surface side of the wall plate 4. Note that the end of the holding cord 3 which is no longer necessary by tightening the nut is cut off with a blade before the fixing of the mounting portion 10 and removed. Then, the auxiliary handrail 13 was attached to the attachment portion. The result that this auxiliary handrail satisfies the performance stipulated in the standard for qualifying excellent housing parts was obtained.

FIG. 8 shows a short pipe 12 having a length slightly shorter than the length of the insertion hole 5 of the wall plate 4 before the fitting portion 10 of the bracket 9 is fitted to the anchor bolt 6.
After the fitting, the short pipe 12 is inserted into the insertion hole 5, the mounting portion 10 of the bracket 9 is fitted to the anchor bolt 6 and fixed to the surface side of the wall plate.

The sheet material having spring elasticity used for the spiral washer is not limited to the above-mentioned embodiment, but has a thickness of 0.2 to 0.5 mm and a Vickers hardness of 250 to 38.
A stainless steel strip of 0 degree may be used. 0.2mm thick
If it is thinner, the strength of the washer is uneasy.
If the hardness exceeds 250, it becomes difficult to stretch and deform and to fit it on the back surface side of the wallboard even if the Vickers hardness is set to 250. When the Vickers hardness exceeds 380, the thickness of the thin plate material is reduced to 0.2.
Even if it is as thin as mm, it is difficult to fit it into a wall plate.
Furthermore, when the Vickers hardness is less than 250, the recovery of the washer that has been stretched and deformed in the axial direction is weakened, so that the thin plate used as the spiral washer has a thickness of 0.2 to 0.2.
It is preferable to use one having a Vickers hardness of 0.5 mm and a Vickers hardness of 250 to 380.

In the present invention, as shown in FIGS. 5 and 6, the width (L) of the locking piece 7 rotatably attached to the tip of the anchor bolt 6 is formed to be wider than that on the market, and the spiral is formed. Wider contact with the washer band.
However, the anchor bolt is not limited to the one having such a structure, and any commercially available anchor bolt having a rotatable locking piece at the distal end may be used.

In the above embodiment, the attachment portion 10 has a configuration in which the connection cover is screwed to the outer periphery to connect the connection portion of the handrail. However, the present invention is not limited to such a structure. As shown in FIG. 9, a mounting part 10 and a handrail 1 for fixing a gypsum board to a wall plate in which two plaster boards are combined.
Even if the support portion 14 and the connecting portion 15 of the handrail 3 are an integral bracket 9, the connecting portion 15 integrated with the support portion 14 of the handrail is fitted to the mounting portion 10 fixed to the wall plate as shown in FIG. In this case, the mounting portion 10 and the connecting portion 15 may be fixed by screws 16.

[0016]

As is apparent from the above description, according to the present invention, the spiral brackets having spring elasticity are provided on the back side of the wall plate, so that the front side bracket of the wall plate is securely attached using the anchor bolts. Therefore, the number of steps and time required for mounting the bracket can be reduced and the cost can be reduced as compared with the conventional one using a C-shaped steel.

Also, the mounting position of the bracket is conventionally C
Although the position is limited to the position where the section steel is mounted, the present invention is not limited to the mounting position and can be freely mounted at any position on the wallboard.

Since the washer of the present invention is formed by spirally punching a thin plate having spring elasticity, it is axially stretched and deformed while passing through the wall plate from the start end of the outer spiral band portion to the wall plate. A large washer can be fitted into the back side of the wallboard by sequentially turning it into a screw. And
The washer protects the wall plate around the insertion hole, and is securely fastened by the anchor bolt.

Further, when the spiral washer is tightened by the anchor bolt, it is resiliently pressed against the wall plate, so the tightening is assured, which is effective for mounting the bracket.

Further, in the case where the short pipe is fitted in the insertion hole of the wall plate, the wall plate portion around the insertion hole is reinforced, and the fastening with the anchor bolt is more reliable.

[Brief description of the drawings]

FIG. 1 is a plan view showing a state where the present invention is used for attaching an auxiliary handrail in a bathroom.

FIG. 2 is an enlarged vertical sectional view of a main part of a handrail mounting portion in FIG. 1;

FIG. 3 is a plan view of a spiral washer.

FIG. 4 is a sectional view taken along line AA of FIG.

FIG. 5 is a side view of an anchor bolt having a locking piece at a distal end.

FIG. 6 is a bottom view of the anchor bolt shown in FIG. 5;

FIG. 7 is a longitudinal sectional side view showing a fitted state of a spiral washer.

FIG. 8 is a longitudinal sectional view showing another embodiment of the present invention.

FIG. 9 is a side view showing a second embodiment of the bracket used in the present invention.

FIG. 10 is a vertical sectional side view showing a third embodiment of the bracket used in the present invention.

FIG. 11 is a plan view showing a mounting state of a conventional bracket.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Spiral washer 1A End of inner spiral band part 1B Beginning end of outer spiral band part 2 Bolt insertion port 3 Retaining string 4 Wall plate 4A Front side of wall plate 4B Back side of wall plate 5 Insertion hole 6 Anchor bolt 7 Stop piece 8 Concrete wall 9 Bracket 10 Bracket mounting part 11 Nut 12 Short pipe

Claims (3)

[Claims] 1. A sheet material having a spring elasticity having a thickness of 0.2 to 0.5 mm and a Vickers hardness of 250 to 380,
A spiral washer that is punched in a spiral shape having a bolt insertion hole in the center and is attached to a bracket having a tough and elongated holding string attached near the end of the inner spiral band portion. 2. A bracket attached to a front surface side of a wall plate by an anchor bolt having a rotatable horizontally-long locking piece at a tip end, the thickness being 0.2 to 0.5 mm.
Then, a thin plate having spring elasticity having a Vickers hardness of 250 to 380 is punched into a spiral shape having a bolt insertion hole at the center, and a tough and elongated holding cord is attached near the end of the inner peripheral spiral band portion. The spiral washer is screwed into the through hole penetrating through the wall plate installed at a fixed distance from the beginning of the outer peripheral spiral band at the front of the concrete wall while extending and deforming the spiral band part in the axial direction as a whole. And the entire swirl band portion is fitted from the front side of the wall plate to the back side, the portion of the holding string present on the front side of the wall plate is pulled to hold the washer at the position of the insertion hole, and After the locking piece at the tip of the bolt is inserted in the vertical direction toward the bolt insertion hole of the spiral washer, the locking piece is expanded, and the wings of the swirl washer are spread conically. Lock and wall board After fitting the mounting part of the bracket to the anchor bolt part protruding from the surface, screw the nut, tighten the nut, pull the spiral washer to the back side of the wall plate, and resiliently to the back surface of the wall plate A bracket mounting device characterized by being configured to press and fix a bracket mounting portion to a front surface side of a wall plate. 3. The bracket mounting device according to claim 2, wherein a short pipe having a length slightly shorter than the length of the insertion hole is inserted into the insertion hole penetrating the wall plate.