JPH08200340A - Anchor device - Google Patents

Abstract

PURPOSE: To provide an anchor device capable of being firmly fastened by a bolt. CONSTITUTION: A plate nut 2 is inserted into a bag-shaped section 6 formed perpendicularly via a bendable section at the tip of a trough-shaped barrel section 4, the bag-shaped section 6 and the plate nut 2 are bent in parallel with the trough-shaped barrel section 4 and inserted into the lateral hole 22 of a wall material 21, and the trough-shaped barrel section 4 is pulled back while the bag-shaped section 6 and the plate nut 2 are located on the back side of the wall material 21. A seat member 3 inserted with the trough-shaped barrel section 4 is coupled with the horizontal hole 22, the seat member 3 is hooked on the trough-shaped barrel section 4 by a hooking means, the trough- shaped barrel section 4 protruded from the seat member 3 is cut off, a bolt 17 is screwed into the screw hole 8 of the plate nut 2, and a fastened object can be fixed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anchor device that allows various members and equipment to be fastened to the surface of a portion where a hand cannot be inserted on the back side with bolts.

[0002]

2. Description of the Related Art For example, when various members and equipment are fastened to a wall surface where a screw hole cannot be formed with a bolt, it is necessary to dispose a nut on the back side of the wall surface.

Therefore, when it is not possible to insert the hand on the back side of the wall surface, an anchor device is used which can position the nut on the back side by inserting the hand from the front side of the wall surface.

A conventional anchor device is, for example, as shown in US Pat. No. 4,079,655, in which a blade-shaped nut formed by press-molding a thin metal plate is held by an arm member that can be folded in two, and a bolt is screwed into the nut. The structure is such that the folded arm member is inserted into the hole provided in the wall member from the front side, and the bolt is screwed with the arm member opened on the back side of the wall member.

[0005]

By the way, in the above-mentioned anchor device, since the blade thickness of the vane-shaped nut is thin and the strength is weak, it is likely to be deformed or broken by a load,
There is a problem that the structure cannot be firmly fastened and the manufacturing cost is high.

Therefore, an object of the present invention is to provide an anchor device which can use a plate nut having a large plate thickness, can perform a firm fastening, has a simple structure and is inexpensive to manufacture.

[0007]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention has a bag-shaped portion at the tip of a gutter-shaped body via a bendable portion at an angle in the lengthwise direction of the body. The seat member includes an insertion member provided, a plate nut that is inserted into the bag-shaped portion and has a screw hole in a portion protruding from the bag-shaped portion, and a seat member that is externally fitted and inserted into the gutter-shaped body portion. In this configuration, a holding means for holding the seat member in a retaining shape is provided on the inner peripheral surface and the outer peripheral surface of the gutter-shaped body.

[0008]

[Function] The bag-shaped portion and the plate nut inserted therein are bent at the bendable portion so as to be in a posture parallel to the longitudinal direction of the gutter-shaped body portion, and in this state, the bag-shaped portion is inserted into the hole of the wall material first. When the plate-shaped nut and the bag-shaped part that holds the plate-shaped part reach the back side of the wall material, the bag-shaped part bends due to the restoring elasticity of the bendable part, and when the gutter-shaped member is pulled back, Since the bag-shaped portion and the plate nut come into contact with the back side of the wall member, when the seat member externally fitted and inserted into the trough-shaped body is pushed toward the hole of the wall member, the seat is engaged by the locking means. The member has a retaining shape, and the portion of the gutter-shaped body protruding from the seat member is broken off.

Next, a bolt is inserted from the seat member into the hole of the wall material along the inner circumference of the gutter-shaped body portion, and the bolt is screwed into the screw hole of the plate nut. The fastening member can be fixed.

[0010]

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

As shown in the figure, the anchor device according to the present invention includes an insertion member 1 formed of a synthetic resin, a plate nut 2 attached to the tip of the member 1, and a cylinder for external fitting insertion into the insertion member 1. It is configured by a combination with the seat member 3 in the shape of a circle.

The insertion member 1 has a structure in which a bag-shaped portion 6 is connected to the distal end of a long gutter-shaped body portion 4 having a substantially semicircular cross section through flexible portions 5 and 5 on both sides. The shaped portion 6 is formed into a rectangular cylinder with a bottom for holding the plate nut 2 in the square hole 7, and the positions on both sides of the opening upper end are the tip of the gutter-shaped body portion 4 and the upper portions on both sides. It is connected through the curved portions 5 and 5.

The bag-shaped portion 6 is formed so that the axial direction of the square hole 7 is at right angles to the lengthwise direction of the gutter-shaped body portion 4, and is turned upward with the bendable portions 5 and 5 as fulcrums. It can be moved.

The plate nut 2 is formed in a vertically long rectangular shape by using a metal plate having a plate thickness of, for example, about 4 mm. When the plate nut 2 is inserted into the bag-shaped portion 6, the opening upper end edge of the bag-shaped portion 6 is formed. A screw hole 8 is provided so as to penetrate therethrough at a position protruding from the upper end, and the upper end portion corresponds to the plate thickness of the rear wall 9 located on the gutter-shaped body portion 4 side of the bag-shaped portion 6 and the gutter-shaped body portion 4 is provided. The bent portion 10 is bent to the side.

The diameter of the screw hole 8 is equal to or slightly smaller than the inner diameter of the trough-like body portion 4, and the plate nut 2 is inserted into the square hole 7 of the bag-like portion 6 as shown in FIG. In this state, the inner diameter of the trough-shaped body 4 and the screw hole 8 are coaxially arranged. The upper ends of the front wall 9 and the rear wall 11 of the bag-shaped portion 6 are arcuate recesses 12 and 13 so as not to overlap the screw holes 8.
The upper end of the rear wall 9 faces the tip of the gutter-shaped body 4.

The seat member 3 is made of a synthetic resin and comprises a cylindrical portion 14 which is fitted and inserted into the gutter-shaped body portion 4, and a flange 15 provided on the outer periphery of the rear end portion of the cylindrical portion 14.
As for the inner diameter of, the substantially lower half portion is a large diameter portion 16 that fits the outer shape of the trough-shaped body portion 4, and the remaining upper half portion is a small diameter portion 18 into which the outer diameter of the bolt 17 is fitted. In addition, the seat member 3 may have an oval shape.

The outer peripheral surface of the trough-shaped body portion 4 and the inner peripheral surface of the large-diameter portion 16 of the seat member 3 allow movement of the seat member 3 with respect to the trough-shaped body portion 4 in the insertion direction, and the seat member 3 Is provided with a pair of locking means for engaging and retaining the lock. As shown in FIG. 2 and the like, the locking means includes a serrated step portion 19 provided on the outer peripheral surface of the gutter-shaped body portion 4 and a large diameter portion 16 of the seat member 3.
Engaging ridges 20 provided on the inner peripheral surface of the ridge so as to engage with the stepped portion 19.
It is formed by the combination with.

The anchor device of the present invention is constructed as described above, and its usage will be described below.

FIGS. 1 (A), 1 (B) and FIG. 2 show an example of use in the case of fixing an object to be fastened to a wall member 21 whose hands cannot be inserted on the back side with bolts 17, and a seat member for the wall member 21. A horizontal hole 22 having an inner diameter into which the cylindrical portion 14 of FIG. 3 is fitted is bored, and then the plate nut 2 is inserted into the bag-shaped portion 6 of the insertion member 1 to set the bag-shaped portion 6 and the plate nut 2. It is rotated upward at the bendable portions 5 and 5, and the plate nut 2 is held by hand in the lengthwise direction of the gutter-shaped body portion 4 so as to lie down substantially in parallel.

In this state, the bag-shaped portion 6 to the gutter-shaped body portion 4 are
The wall member 21 is inserted into the lateral hole 22 from the front surface side.

FIG. 1 (A) shows a state in the middle of insertion, in which the bag-shaped portion 6 and the plate nut 2 try to return to their original postures due to the restoring elasticity of the synthetic resin forming the bendable portions 5, 5. The bag-shaped portion 6 and the plate nut 2 that are not held by hand pass through the inside of the lateral hole 22 in an inclined state in which the upper end of the plate nut 2 is in contact with the upper surface of the lateral hole 22.

When the bag-shaped portion 6 and the plate nut 2 completely pass through the lateral hole 22 and are located on the back side of the wall member 21, the bendable portion 5,
Since the bag-shaped portion 6 and the plate nut 2 return to their original posture by the restoring elasticity of 5, when the gutter-shaped body portion 4 is pulled back, the rear wall 9 of the bag-shaped portion 6
The upper end of the plate nut 2 comes into contact with the back surface of the wall member 21, the trough-shaped body portion 4 cannot be pulled out, and the screw hole 8 of the plate nut 2 faces the lateral hole 22.

Next, as shown in FIG. 1B, the large-diameter portion 16 of the seat member 3 is fitted into the trough-shaped body portion 4, and the seat member 3 is moved forward while holding the trough-shaped body portion 4. The cylindrical portion 14 is fitted into the lateral hole 22.

As a result, the engaging projection 20 of the seat member 3
However, it is engaged with the step portion 19 of the trough-shaped body portion 4, and the seat member 3 has a retaining shape.

Next, the part of the trough-shaped body 4 projecting from the seat member 3 is broken or cut and removed by a blade to remove the wall material 21.
Insert a bolt 17 penetrating an object to be fastened (not shown) that is stacked on the surface of the seat from the small diameter portion 18 of the seat member 3 into the lateral hole 22,
The bolt 17 is screwed into the screw hole 8.

The bolt 17 is engaged with the screw hole 8 to pull the plate nut 2 toward the back surface of the wall member 21, and the head of the bolt 17 presses the object to be fastened to the front surface of the wall member 21. The object to be fastened can be fixed to the wall member 21 at 17.

FIG. 6 shows an example of use in fastening a member to be fastened to a hollow extruded cement plate 31 with bolts. Horizontal holes 34 are formed in opposite wall plates 32, 33 of the hollow extruded cement plate 31.
35 are provided in a coaxial arrangement, and the insertion member 1 has a bag-shaped portion 6
Insert the plate nut 2 into the box, and with the bag-shaped part 6 and the plate nut 2 parallel to the gutter-shaped body part 4, place a long rod-shaped tool 36 or a metal rod along the inside of the gutter-shaped body part 4. Insert in the length direction,
By positioning the tip of the tool 36 on the lower surface side of the bag-shaped portion 6 which is laid down, the laid-down posture of the bag-shaped portion 6 and the plate nut 2 is maintained.

As a result, both lateral holes 34, 3 of the hollow extruded cement plate 31 having a hollow portion between the wall plates 32, 33 are formed.
The bag-shaped portion 6 and the plate nut 2 can be inserted and passed over 5.

As shown in FIG. 6, the gutter-shaped body portion 4 penetrates from the lateral hole 34 of the one wall plate 32 to the lateral hole 35 of the other wall plate 33, and the bag-shaped portion 6 and the plate nut 2 are attached to the outer surface of the wall plate 33. Is located at
When the tool 36 is pulled out, the bag-shaped part 6 and the plate nut 2 are inclined due to the restoring elasticity of the bendable part 5, and the gutter-shaped body part 4 is pulled back to bring the bag-shaped part 6 and the plate nut 2 to the outer surface of the wall plate 33. The seat member 3 inserted into the gutter-shaped body 4 in this state.
The seat member 3 is retained by the engagement of the engaging projection 20 and the step portion 19, and the gutter-shaped body portion 4 is broken and the plate nut 2 is screwed with the bolt. Can fix the object to be fastened.

[0030]

As described above, according to the present invention, a seat member is provided in which a plate nut is attached to a bag-shaped portion provided at the tip of the gutter-shaped body via a bendable portion and is inserted into the gutter-shaped body. Since the locking means is provided on the gutter-shaped body, the part to which the hand cannot be inserted on the back side can be fastened with a bolt with a simple structure and operation, and a thick plate nut can be used for the nut. It can be used, and it does not deform or break due to load, so strong fastening can be obtained.

[Brief description of drawings]

FIG. 1 (A) is a longitudinal sectional view showing a state of use of an anchor device according to the present invention during insertion into a lateral hole, and FIG. 1 (B) is a longitudinal sectional view showing a state of being attached to the lateral hole.

FIG. 2 is an enlarged vertical sectional view of a main part of the same.

FIG. 3A is an enlarged plan view showing the distal end portion of the insertion member, and FIG. 3B is a sectional view taken along the arrow III-III in FIG.

FIG. 4A is a front view of a seat member, and FIG. 4B is a sectional view taken along the arrow IV-IV of FIG.

FIG. 5 is an exploded perspective view showing a main part of the anchor device.

FIG. 6 is a vertical sectional view showing another example of use of the anchor device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insert member 2 Plate nut 3 Seat member 4 Gutter-shaped body part 5 Flexible part 6 Bag-shaped part 8 Screw hole 16 Large diameter part 19 Step part 20 Engagement protrusion

Claims (1)

[Claims] 1. An insertion member in which a bag-shaped portion is provided at the tip of the gutter-shaped body portion via a bendable portion at an angle in the lengthwise direction of the body portion.
It is composed of a plate nut that is inserted into the bag-shaped portion and has a screw hole in a portion projecting from the bag-shaped portion, and a seat member that is externally inserted and inserted into the gutter-shaped body portion, and an inner peripheral surface of the seat member and the gutter. An anchor device provided with holding means for holding the seat member in a retaining shape on the outer peripheral surface of the cylindrical body.