JPH11101213A - Bolt receiving metal fitting to fasten object to hollow structure by screw - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install by a small installing hole and to provide large pulling-out resistant force by inserting a guide plate member installed with a bolt receiving body into the installing hole so as to be rotatable with a fastening shaft longitudinally freely slidable in the inserting direction as the axis. SOLUTION: An installing hole 41 having a diameter larger by about 3.5 mm than a diameter of an installing bolt 3, is bored in a position in which an installing object member 4 of a hollow structure is to be installed. A bolt receiving body 1 is pushed in it together with a guide piece part 22, and is inserted into a hollow part. The bolt receiving body 1 rotates with a fastening shaft 13a as the axis when entering the hollow part, and is put in a condition orthogonal to the inserting direction. A guide plate member 2 is pulled once toward the operator, and the bolt receiving body 1 is drawn near up to contacting with the reverse side of the installing object member 4 in the hollow part. Afterwards, the installing bolt 3 inserted into a hole of an installing member 5 is inserted into the hollow part from an installing bolt inserting hole arranged in the guide plate member 2, and is screwed in and fastened to a bolt receiving hole of the bolt receiving body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a thin member to be mounted or a material such as a gypsum board or a foam material, which makes it difficult to mount an object by using a screw hole or a wood screw. The present invention relates to a special bolt holder suitable for screwing an object into a hollow structure such as a wall or a ceiling where a hand cannot be put inside.

[0002]

2. Description of the Related Art When mounting an object on a hollow structure such as a wall or a ceiling where a hand cannot be put inside, a screw hole is directly cut into the mounted member depending on the thickness of the mounted member or the material. It may be difficult to fix by methods or wood screws. In this case, conventionally, a bolt combined with an anchor member with a nut with a fold in the middle, which is crushed and spread by tightening a screw, is often used (first example).
Precedent example). However, this has the following disadvantages. (A) Before mounting the mounting object, first, the anchor member serving as the bolt receiver must be fixed to the member to be mounted. The rotation of the screw pulls the nut at the tip, and the anchor member is mounted in a crushed form. Since it is structured to be opened on the back side of the member, it is necessary to turn the screw with a large force and a large number of times to fix it, so that a special tool such as an electric screwdriver is required. (B) After fixing the anchor member, turning the screw in the opposite direction and pulling it out, it is necessary to mount the attachment again, so that the attachment work is complicated and troublesome. (C) A relatively large mounting hole is required, and it is difficult to secure a large pull-out resistance because the area of a portion overlapping the member to be mounted is limited. (D) In order to cope with a change in the thickness of the member to be mounted, various types of metal fittings having different sizes must be used.

In addition, for a hollow structure made of a relatively soft and thick material such as cellular concrete, a locking piece having a receiving portion (leg seat) having a structure obtained by bending a plate piece is used as a bolt head. Instead of this, a mounting bracket which is pivotally mounted at the center of the tip of the bolt has also been devised (Japanese Utility Model Application No. 61-39493, second prior art). However, also in this case, (a) it is necessary to make a large insertion hole to insert the tip of the bolt with the locking piece. (B) crush the non-threaded portion in a predetermined range near the tip of the bolt, and Because the locking piece is attached to the shaft, the thickness is insufficient, it can not be used for thin attached members,
(C) Due to the structure, there are drawbacks such as the inevitable protrusion of the bolt buttocks remaining after installation.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems in the conventional mounting bolts and nuts for screwing an object to a hollow structure. With large pull-out strength, can be used for various mounting members from thin plate to thick plate and mounted members, and there is no extra bolt butt protrusion, and the bolt head is on the outside It is another object of the present invention to provide a bolt receiving bracket which can accommodate all of the remaining parts in a hollow part and which can be used for mounting bolts of general-purpose products.

[0005]

In order to achieve the above object, a bolt receiving device for screwing an object into a hollow structure according to the present invention comprises a bolt receiving member (1) and a guide plate for holding the bolt receiving member. And the member (2). Details of specific means are as follows. The bolt receiver (1) is an elongated rectangular parallelepiped-like member, and has a bolt receiving hole (11) that fits the mounting bolt (3) penetrating the upper surface thereof.
2), and a locking projection (1) having a stop shaft (13a) and a flange portion (13b) for preventing falling off at the center of both side surfaces.
3) is provided, and the left and right sides of the lock shaft (13a) serving as the rotation shaft are changed in the left and right weights such as drilling of the lightening hole (14) or formation of a cutout portion, and the bolt receiver (1). Provide a mechanism to ensure the rotation of. Thin strip-shaped guide plate member (2)
In the center of the rim, a circular flange with a diameter larger than the plate width (21)
Are provided with guide pieces (22) on the left and right sides thereof,
A mounting bolt insertion hole (21a) is drilled near the center of (1), and an elongated bolt receiver holding hole () extends in a range from the base to near the tip along the substantially central longitudinal direction of the width of the guide piece (22). 22a) is pierced, and a locking projection receiving hole (22b) is provided at a position nearer to the front. The guide pieces (22) on both sides are bent in the same direction at their bases, leaving a required width at both edges of the mounting bolt insertion holes (21a) provided in the flange (21), thereby forming a U-shape. Then, using the locking projection receiving hole (22b), the locking projection (13) is locked in the elongated bolt receiver holding hole (22a) of the guide piece (22), and is inserted along the insertion direction. Retaining shaft that slides freely back and forth (1
The guide plate member (2) is rotatable about 3a).
The bolt receiver (1) is mounted between the two guide pieces (22). The present invention has the above configuration,
It is a bolt fitting for screwing an object to a hollow structure. Further, the rotation of the bolt receiver (1) about the stop shaft (13a) of the locking projection (13) changes the installation position of the locking projection (13) and changes the position of the bolt receiver (1). It is also possible to secure by changing the length of the left and right. In this case, it is necessary to change the position of the bolt receiving hole (11) and align the center with the position of the locking projection (13).

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on embodiments shown in the drawings. 1 to 3
FIG. 1 shows an example of a first embodiment of a bolt fitting of the present invention. FIG. 1 is an exploded perspective view of the whole, and FIGS. 2 and 3 are a plan view and a side view of the assembled fitting. . In this case, the bolt receiver (1) is a rectangular parallelepiped metal member having a required length, and penetrates through a bolt receiving hole (11) having a wide entrance, which fits the mounting bolt (3) at the center of its upper surface. A stop shaft (13a) is provided at both ends of the upper and lower surfaces, and a stop shaft (13a) serving as a rotation shaft of the bolt receiver (1) is provided at the center of both sides.
And a locking projection (13) having a flange portion (13b) for preventing falling off. And the stop shaft (13a)
A lightening hole having a diameter as large as possible parallel to the bolt receiving hole (11) between the rotation stopping projection (12) and the bolt receiving hole (11) in the portion of the left or right bolt receiver (1). (1
4), the left and right weights are changed so that when the bolt receiver (1) is in a free state, it is always urged to turn in the direction in which the side provided with the lightening hole (14) is upward. I have.
The guide plate member (2) is a thin metal member having a substantially band-like shape, and includes a circular flange (21) having a diameter larger than the width of the band at the center and guide pieces (22) on the left and right sides thereof. A required position near the center of the part (21) is a mounting bolt receiving hole (21a).
Are perforated. In addition, an elongated bolt receiving hole (22a) having a required width is formed substantially in the center of the lateral width of the guide piece portion (22) in the range from the base to the vicinity of the tip along the longitudinal direction. Is provided with a locking projection receiving hole (22b) whose hole width is widened to a required shape. The guide plate member (2) further has a guide piece portion (22) on both sides which is the same at its base except for a minimum width at both edges of the mounting bolt insertion hole (21a) provided in the flange portion (21). It is bent in the direction and is formed in a U-shape. FIG. 4 is an explanatory view showing a state when the flange portion (13b) of the locking projection (13) is inserted into the locking projection receiving hole (22b).
The shape and installation position of the locking projection receiving hole (22b) are such that the longitudinal direction of the bolt receiver (1) is aligned with the longitudinal direction of the guide piece portion (22), and the bolt receiving member (1) is pulled toward the front and shifted further upward. The bolt receiver (1) can be attached and detached only in the normal state, and the bolt receiver (1) mounted is normally securely locked to the guide piece (22) by the flange portion (13b), thereby preventing the bolt receiver (1) from falling off. Shape and position. Then, the entire bolt receiving member uses the locking projection receiving hole (22b) to guide the locking projection (13) of the bolt receiver (1) to the guide piece (2).
2) The locking projection (1) that locks in the elongated bolt receiver holding hole (22a) and slides freely back and forth in the insertion direction.
So that the stop shaft (13a) of 3) can be freely rotated around the shaft,
It is assembled by holding a bolt receiver (1) between two guide pieces (22) of a guide plate member (2). The dimensions and shape of each part of the bolt receiving member are determined in consideration of the depth of the hollow portion of the hollow structure, the thickness of the member to be mounted (4), the required pull-out strength, and the like, and the mounting provided on the member to be mounted (4). Hole (4
Preferably, it is determined that 1) is minimized. Further, as a mechanism for ensuring the rotation of the bolt receiver (1) about the stop shaft (13a), the stop shaft (13a) of the bolt receiver (1) is different from that of the above embodiment. ) A hole having an appropriate diameter and depth is drilled in the longitudinal direction of the left or right portion of the installation position, or the rotation stopping projection (12) and the bolt receiving hole (1) are formed.
The left and right weights are changed by forming a required shape of a cut-out portion between them and 1) or the stop shaft (13a) is formed.
It is also possible to change the lengths of the bolt receivers (1) on the left and right portions. The bolt receiver of the present invention has the above-described configuration.

FIG. 5 is an explanatory diagram of the work procedure of the installation work using the bolt fitting of the present invention. The method of use will be described below with reference to FIG. In order to use the bolt receiving device of the present invention, first, at a position where the object to be mounted (4) of the hollow structure is to be mounted, the diameter of the mounting bolt (3) is about 3.5 from the diameter of the mounting bolt (3).
A mounting hole (41) having a diameter as large as about mm is formed. Then, the bolt receiver (1) mounted on the guide piece (22) of the bolt receiving tool is rotated, and the longitudinal direction thereof is slid to the foremost part in accordance with the insertion direction, and then the guide piece (22) is moved. ) And the bolt receiver (1) is pushed into the mounting hole (41) and inserted into the hollow part (FIG. 5A). Bolt receiver (1)
Is mounted on the guide piece (22) with a stop shaft (13a) that slides back and forth to unequally divide its weight or length. When inserting the bolt receiving member, if the rotating surface of the bolt receiving member (1) is oriented in a direction perpendicular to the ground, the heavy side is lowered immediately when entering the hollow portion, and the state is perpendicular to the inserting direction. Become.
(FIG. 5B) Even when used for a horizontal hollow structure such as a ceiling, the bolt receiver (1) can be easily rotated and tilted by lightly pushing up and tilting it with a mounting bolt or an appropriate round bar. It can be orthogonal to the direction. Then, once the guide plate member (2) is pulled forward, the orthogonal bolt receiver (1) is pulled until it comes into contact with the back side of the mounted member (4) in the hollow portion, and the bolt receiver (1) is securely supported. After confirming that the force is provided, the mounting bolt (3) passed through the hole of the mounting member (5) is inserted into the hollow portion from the mounting bolt insertion hole (21a) provided in the guide plate member (2), Screw it into the bolt receiving hole (11) of the bolt receiver (1) and tighten it (Fig. 5C). Since the rotation stopping projections (12) are provided on the front and back surfaces of both ends of the bolt receiver (1), the rotation stopping projections (12) bite into the mounted member (3) as the mounting bolts (3) are tightened, and rotate together. Therefore, the tightening operation can be efficiently performed. Further, the guide plate member (2) is pushed into the hollow portion with the tightening of the mounting bolt (3), so that the flange portion (21) blocks the entrance of the mounting hole (41). As the mounting bolt (3), a general-purpose bolt having a required diameter and length can be used.
In the bolt receiving device of the present invention, the front end of the bolt receiver (1) is provided with a mounting hole (41) formed in the mounted member (5).
As long as there is only a hollow portion having a depth enough to be able to start passing around to the back side, the guide plate member (2) can be pulled forward to complete the orthogonality of the bolt receiver (1). it can. The inside of the wall or the like is often filled with a heat insulating material made of glass fiber or the like. As shown in FIG. 6, the tip of the inserted guide piece (22) has a highly elastic heat insulating material. In order to secure the hollow portion (6) between the material and the back side of the member (4) to be compressed, the bolt receiver (1) can be rotated. Metal fittings can be used effectively.

[0008]

The present invention is embodied in the form described above, and has the following effects. (B) The bolt receiver, which is perpendicular to the insertion direction, can be pulled up to just after the flange of the guide plate member, and there is no area that cannot be tightened. This is a bolt with a wide range of applications that can be used to attach general-purpose bolts of various thicknesses to hollow structures of various materials and dimensions made of members. (B) It is easy to obtain the necessary supporting force by changing the width and length of the bolt receiver, and it can be used for relatively soft mounted members. By increasing the length of the bolt receiver, it is possible to produce a screw fitting suitable for repairing a part where the fixing in the first prior example or the like has been loosened and has come off. (C) Since the bolt receiving hole is provided with a widened entrance to the bolt receiving member, it is easy to screw the bolt into the bolt receiving hole, and the rotation stopping projections provided on the front and rear surfaces at both ends of the bolt receiving member. As a result, the bolt receivers are prevented from rotating together, and the flanges provided on the locking projections prevent the bolt receivers from falling off from the guide pieces, so that the mounting operation can be performed efficiently. (D) Mounting can be performed with a relatively small mounting hole slightly larger than the diameter of the mounting bolt main body, and the mounted member is hardly damaged. (E) For the rotation of the bolt receiver, the depth of the hollow portion is required to be slightly larger than the entire length. However, since it is designed so that it can be mounted with a small mounting hole, the required pressure contact area It is possible to shorten the bolt receiver while securing
Accordingly, the present invention can be applied to a hollow structure having a small depth in the hollow portion. (F) Even when the hollow portion of the hollow structure is filled with a resilient heat insulating material such as glass fiber, the tip of the inserted guide piece compresses the heat insulating material and the back side of the attached member. In order to secure a hollow space between the bolt receiving member and the bolt receiving member, the bolt receiving member can be rotated, and the bolt receiving member of the present invention can be effectively used.

[Brief description of the drawings]

FIG. 1 is an overall exploded perspective view of a first embodiment of the present invention.

FIG. 2 is a plan view of the first embodiment in an assembled state.

FIG. 3 is a side view of the assembled state of the first embodiment.

FIG. 4 is an explanatory view showing a state when a flange portion of a locking projection is inserted into a locking projection receiving hole.

FIG. 5 is an explanatory view of a work procedure of an installation work using the bolt receiving device of the present invention.

FIG. 6 is an explanatory diagram of an operation inside a wall or the like filled with a highly elastic heat insulating material such as glass fiber.

[Explanation of symbols]

 1 ‥‥‥ bolt receiver, 11 ‥‥‥ bolt receiving hole, 12 ‥‥‥ rotation stop projection, 13 ‥‥‥ locking projection, 13a ‥‥‥ stop shaft, 13b ‥‥‥ flange, 14 ‥‥ {Light weight hole 2} Guide plate member, 21} Collar, 21a {Mounting bolt insertion hole, 22} Guide piece, 22a {Bolt receiver holding hole, 22b} Locking protrusion receiving hole, 3 mm mounting bolt, 4 mm mounted member, 41 mm mounting hole, 5 mm mounting member, 6 mm hollow portion in hollow structure, 7 mm ‥‥ Insulation material

Claims (2)

[Claims] (1) An elongated rectangular parallelepiped bolt receiver (1)
A bolt receiving hole (11) that fits with the mounting bolt (3) is formed through the upper surface of the shaft. (13
b) is provided on the left or right side of the stop shaft (13a) serving as a rotation axis, and the left and right weights such as the perforation of the lightening hole (14) or the formation of a cutout portion are provided. And a mechanism for ensuring the rotation of the bolt receiver (1) is provided. (B) A circular flange portion (21) having a diameter larger than the plate width is provided at the center of a thin band-shaped guide plate member (2), and guide pieces (22) are provided on the left and right sides thereof. At the center of the guide hole (21a), an elongated bolt receiving hole (22a) is drilled in the range from the base of the guide piece (22) to the vicinity of the center in the longitudinal direction. A locking projection receiving hole (22b) is provided at a position nearer to the front. (C) The mounting bolt insertion holes (21) provided in the collar (21)
a), leaving the required width on both edges,
2) is bent in the same direction at the base to form a U-shape. (D) Using the locking projection receiving hole (22b), the locking projection (13) is inserted into the bolt receiving hole (2) of the guide piece (22).
2a) and two guide pieces (22) of the guide plate member (2) so as to be rotatable about a stop shaft (13a) that freely slides back and forth in the insertion direction. Between the bolt receiver (1). A bolt receiving member for screwing an object to a hollow structure having the above configuration. 2. A bolt receiver having a bolt projection (13) at a position dividing the bolt receiver (A) into unequal lengths on the left and right sides, and a bolt receiving hole (11) centered on the position. A bolt receiving device for screwing an object to a hollow structure having a body (1) and having the same structure as the bolt receiving device according to claim 1 except for the above.