JP2003124645A - Box body fixing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a box body fixing structure that can prevent the unstableness of a box body when the box body is fixed by hanging the box body on a fixing member, such as the screw, etc., fixed on a wall surface. SOLUTION: A vertical through hole 8 is made in the back plate of the box body 1. In addition, an elastic member 10 having a large-diameter hole 10a into which the head section 7b of the fixing member 7 can be inserted at the position corresponding to the bottom side of the hole 8, a small-diameter hole 10b into which the shaft section 7a of the member 7 can be inserted at the position corresponding to the top side of the through hole 8, and a contact face 10c which is brought into contact with the head section 7b of the member 7 and formed so that the face 10c may become higher in height toward the small-diameter hole 10b from the large-diameter hole 10a is provided inside the box body 1. The box body 1 is fixed so that the body 1 may be pressed against the wall surface 6 by slipping the large-diameter hole 10a of the elastic member 10 on the fixing member 7 fixed on the wall surface 6 and engaging the head section 7a of the member 7 with the small-diameter hole 10b of the member 10 by shifting the box body 1 downward.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for fixing a box body to a wall surface.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 9 to 11, the inside of a box body 21 composed of a case 22 and a cover 23 is divided into upper and lower parts, and a printed circuit board 24 is housed in an upper case 22a. Upper cover 2 for covering the case 22a
3a is fixed so as not to be easily opened in order to prevent the device from being damaged due to intrusion of foreign matter or mischief, and the lower case 22b houses a terminal block 25 electrically connected to a printed circuit board 24. The lower cover 23b that covers the side case 22b has a structure that can be easily opened and closed so that wiring can be made to the terminal block 25. In the upper case 22a, a darma hole 28 is formed at one position in the upper center. In addition, screw insertion holes 29, 29 are formed in the lower case 22b at two locations near the lower left and right corners. This box 2
When attaching 1 to the wall surface 26, it is difficult to open and close the upper cover 23a, so it is not removed. The box body 21 is inserted, the box body 21 is shifted downward, and the small hole portion 28b of the Dharma hole 28 is hooked on the screw 27. Then, the lower cover 23b is removed from the lower case 22b, and the screws 3 are inserted into the left and right screw insertion holes 29.
2 was inserted and tightened and fixed, and after tightening, the lower cover 23b was attached and the box body 21 was attached to the wall surface 26.

[0003]

For this reason, the conventional technique has a drawback that the upper part of the box body 21 becomes wobbled because the Dharma hole 28 is simply hooked to the screw 27 screwed to the wall surface 26. In addition, the upper cover 2 of the box body 21
Even if 3a was removed, the printed circuit board 24 could not be tightened because the head of the screw 27 inserted through the dharma hole 28 was blocked. Therefore, the screw 27 can be tightened by cutting out a position facing the dullama hole 28 of the printed circuit board 24, but there is a problem that the printed circuit board 24 becomes small and electronic components cannot be arranged.

In view of the above problems, an object of the present invention is to provide a box body fixing structure capable of preventing wobbling when the box body is hooked and fixed to a fixing member such as a screw fixed to a wall surface. That is.

[0005]

In order to achieve the above object, according to the invention as set forth in claim 1, a rod-shaped shaft portion and an enlarged head portion are projected from the wall surface to the end portion of the shaft portion. In the box body fixing structure in which the box body is hooked and fixed to the fixing member fixed by, the through hole extending vertically is formed in the back plate of the box body, and the fixing member of the fixing member is provided at a position facing the lower side of the through hole. A large-diameter hole through which the head portion can be inserted is formed at a position facing the upper side of the through hole, and a small-diameter hole that is continuous with the large-diameter hole through which the shaft portion of the fixing member can be formed is formed, and contacts the head portion of the fixing member. An elastic member formed by inclining the contact surface from the large diameter hole toward the small diameter hole is provided inside the box body, and the head of the fixing member is engaged with the small diameter hole of the elastic member to form the box body. It is characterized by being fixed so that it can be pressed against the wall surface.

According to the invention of claim 2, claim 1
In the box body fixing structure described in (3), a fixing piece that engages with the peripheral edge of the through hole is formed on the back surface of the elastic member, and the peripheral edge of the through hole is recessed inward of the box body.

[0007]

DETAILED DESCRIPTION OF THE INVENTION According to the invention described in claim 1,
In a box body fixing structure in which a box body is hooked and fixed to a fixing member that projects and fixes a rod-shaped shaft portion from the wall surface and an end portion of this shaft portion, a vertical direction on the back plate of the box body. A large-diameter hole through which the head of the fixing member can be inserted is located at the position facing the lower side of the through hole, and the shaft part of the fixing member can be inserted at the position facing the upper side of the through hole. Inside the box, an elastic member formed by forming a small diameter hole continuous with the large diameter hole and inclining the contact surface that contacts the head of the fixing member from the large diameter hole toward the small diameter hole Since the head of the fixing member is engaged with the small-diameter hole of the elastic member to fix the box body against the wall surface, the box body can be prevented from wobbling.

According to the invention of claim 2, claim 1
In the box body fixing structure according to, the fixing member that engages with the peripheral edge of the through hole is formed on the back surface of the elastic member, and the peripheral edge of the through hole is recessed inwardly of the box body, There is no gap between the back plate and the wall.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a box body fixing structure according to the present invention will be described with reference to the accompanying drawings of FIGS.

The box 1 comprises a case 2 and a cover 3, and the inside is divided into upper and lower parts. A printed circuit board 4 is housed in the upper case 2a, and an upper cover 3a for covering the upper case 2a is fixed so as not to be easily opened in order to prevent a device from being damaged due to foreign matter entering or mischief.
The lower case 2b is provided with a terminal block 5 electrically connected to the printed circuit board 4, and the lower cover 3b for covering the lower case 2b can be easily opened and closed so that the terminal block 5 can be wired. It is structured.

On the wall surface 6 to which the box body 1 is fixed, only one fixing member 7 such as a screw having a rod-shaped shaft portion 7a and a head portion 7b having an enlarged diameter at the end of the shaft portion 7a is preliminarily formed on the wall surface 6 The shaft portion 7a and the head portion 7b are projected and fixed from the.

The upper case 2a of the box body 1 has a through hole 8 extending vertically in one place at the center of the upper portion of the rear plate, and the lower case 2b is provided at two places near the lower left and right corners of the rear plate. The screw insertion holes 9 are formed. Upper case 2a
An elastic member 10 is attached to the through hole 8.

The elastic member 10 is made of, for example, rubber or the like, and is located at a position facing the lower side of the through hole 8 and the head portion 7 of the fixing member 7 is provided.
A large diameter hole 10a through which b can be inserted is formed, and a small diameter hole 10b continuous with the large diameter hole 10a through which the shaft portion 7a of the fixing member 7 can be formed is formed at a position facing the upper side of the through hole 8, and the fixing member is formed. The contact surface 10c that contacts the head portion 7b of the
Is a flat shape, and the small-diameter hole 10b is formed so as to be inclined so as to be higher in the direction from the large-diameter hole 10a to the small-diameter hole 10b. A fixing piece 10d having a substantially U-shaped cross section for engaging with 8 is formed outward.

The fixing piece 10d of the elastic member 10 is elastically deformed and fitted into the through hole 8 from the inside of the box body 1 to be fixed. Since the peripheral edge of the through hole 8 of the box body 1 is recessed inward to form the step portion 11, the fixing piece 10c of the elastic member 10 does not project to the back surface of the box body 1.

In order to mount the box body 1 on the wall surface 6, first,
The upper cover 3a is not opened and closed, and the large-diameter hole 10a of the elastic member 10 is inserted into the fixing member 7 without changing the state of the box 1
Is moved downward to move the shaft portion 7a of the fixing member 7 to the elastic member 10
To the small diameter hole 10b. Contact surface 1 of elastic member 10
Since 0c is inclined, the head portion 7b of the fixing member 7 is pushed into the elastic member 10 when the fixing member 7 moves to the small diameter hole 10b of the elastic member 10, and the box body 1 is pressed against the wall surface 6 The upper part of 1 is fixed. Then, remove the lower cover 3b from the lower case 2b, insert the screw 12 into the left and right screw insertion holes 9 and tighten it to the wall surface 6 to fix the lower part of the box 1, and after tightening, attach the lower cover 3b. Thus, the fixing of the box body 1 is completed.

In this embodiment, the contact surface 10c of the elastic member 10 has the large diameter hole 10a formed in a flat surface and the small diameter hole 10b formed in an inclined surface. The whole surface 10c can be changed as appropriate, such as by forming an inclined surface.

The fixing piece 10d of the elastic member 10 is shown in FIG.
As shown in FIG. 6A, it may be formed around the large diameter hole 10a and the small diameter hole 10b, or as shown in FIG.
It can be appropriately changed by forming it in two places, that is, the lower part of 0a and the upper part of the small diameter hole 10b.

The shape and material of the elastic member 10 are not limited, and may be made of synthetic resin, or may be formed of a leaf spring as shown in FIG. 7 as appropriate without departing from the spirit of the present invention. It can be changed.

The shape of the box 1 is not limited,
For example, as shown in FIG. 1, the inside of the box body 1 may be formed without being divided, the through hole 8 may be formed as a daruma hole instead of the elongated hole shape, and the elastic member 10 may be a lower part. It can be appropriately modified without departing from the gist of the present invention, such as being formed so as to be attached to the side.

[0020]

As described above, according to the invention as set forth in claim 1, the box is fixed to the fixing member fixed by projecting and fixing the rod-shaped shaft portion and the enlarged head at the end portion of the shaft portion from the wall surface. In a box fixing structure in which a body is hooked and fixed, a through hole extending vertically is formed in a back plate of the box, and a large head portion of a fixing member can be inserted at a position facing a lower side of the hole. A small-diameter hole that is continuous with a large-diameter hole through which the shaft of the fixing member can be inserted is formed at a position facing the upper side of the through hole, and a contact surface that contacts the head of the fixing member is formed from the large-diameter hole. An elastic member formed by inclining so that it becomes higher toward the small diameter hole is provided inside the box body, and the head of the fixing member is engaged with the small diameter hole of the elastic member and fixed so that the box body is pressed against the wall surface. By doing
There is an effect that the wobbling of the box can be prevented.

According to the invention of claim 2, claim 1
In the box body fixing structure according to, the fixing member that engages with the peripheral edge of the through hole is formed on the back surface of the elastic member, and the peripheral edge of the through hole is recessed inwardly of the box body, The effect is that there is no gap between the back plate and the wall surface.

[Brief description of drawings]

FIG. 1 is a front view of a box body according to the present invention with a cover removed.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a cross-sectional view of a box body according to the present invention fixed to a wall surface.

FIG. 4 is an enlarged view of part B in FIG.

FIG. 5 is a cross-sectional view showing a modified embodiment of the elastic member according to the present invention.

FIG. 6 is a rear view showing a modified embodiment of the elastic member according to the present invention.

FIG. 7 is a sectional view of a main part of a box showing a modified example of the elastic member according to the present invention.

FIG. 8 is a front view showing a modified embodiment of the box body according to the present invention with the cover removed.

FIG. 9 is a front view of a conventional box body with a cover removed.

10 is a cross-sectional view taken along the line CC of FIG.

FIG. 11 is a cross-sectional view of a conventional box body fixed to a wall surface.

[Explanation of symbols]

1 ... Box 2 ... Case 2a ... upper case 2b ... Lower case 3 ... Cover 3a ... upper cover 3b ... Lower cover 6 ... wall surface 7 ... Fixing member 7a ... Shaft 7b ... Head 8 ... Through hole 10 ... Elastic member 10a ... Large diameter hole 10b ... small diameter hole 10c ... Contact surface 10d ... Fixing piece 11 ... Step

Claims (2)

[Claims] 1. A box body fixing structure in which a box body is hooked and fixed to a fixing member fixed by projecting and fixing a rod-shaped shaft portion and a head portion having an enlarged diameter to an end portion of the shaft portion from a wall surface. A through hole extending in the vertical direction is formed in the back plate of the rear plate, and a large-diameter hole through which the head of the fixing member can be inserted is provided at a position facing the lower side of the through hole at a position facing the upper side of the through hole. A small-diameter hole that is continuous with the large-diameter hole through which the shaft portion of the fixing member can be inserted, and a contact surface that contacts the head of the fixing member increases from the large-diameter hole to the small-diameter hole. The elastic member formed by inclining to the inside is provided inside the box body, and the head portion of the fixing member is engaged with the small diameter hole of the elastic member to fix the box body so as to be pressed against the wall surface. The characteristic fixing structure of the box. 2. The fixing member that engages with the peripheral edge of the through hole is formed on the back surface of the elastic member, and the peripheral edge of the through hole is recessed inward of the box body. Fixed structure of the box body described in.