JPH0737345Y2 - Mounting structure for screws attached to electronic device housings - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing attachment screw mounting structure for an electronic device in which a wall-mounted wood screw is attached to a plastic housing of an indoor electronic device that can be used on a table or on a wall.

[0002]

2. Description of the Related Art FIG. 5 is a cross-sectional view showing a conventional screw mounting structure for attaching an electronic device to a housing, and wood screws 11a and 11b attached to a housing 10 of an electronic device product for wall mounting.
Are screw holes 12a, 12 provided on the surface of the housing bottom lid 10b.
It is vertically screwed from the outside of b and is additionally held in the space between the housing bottom cover 10b and the printed circuit board 13 mounted parallel to the copper foil surface 13a.

That is, in this screw-on type mounting structure,
Although the wood screws 11a and 11b are not likely to be lost and are convenient, since the copper foil surface 13a of the printed circuit board 13 is on the wood screws 11a and 11b side, the wood screws 11a and 11b are not provided.
If the material is a metal, there is a risk of short-circuiting with the copper foil surface 13a.

Therefore, a certain distance k is required between the tips of the wood screws 11a and 11b and the copper foil surface 13a of the printed circuit board 13, and the longer the wood screws 11a and 11b, the larger the housing 10 becomes. There's a problem.

Further, when the above electronic equipment product is installed on a shelf or the like for tabletop use, if the heads of the wood screws 11a and 11b project from the surface of the housing bottom lid 10b, the surface of the shelf or the like is damaged. Since there is a possibility that the heads of the wood screws 11a and 11b are submerged in the housing bottom surface 10b at a minute distance i, it is necessary to previously provide the recesses 14 corresponding to the periphery of the screw holes 12a and 12b. .

In this case, in order to secure a certain distance k between the tips of the wood screws 11a and 11b and the copper foil surface 13a of the printed circuit board 13, the housing bottom cover 10b is made larger in the height direction. Need to do.

[0007]

Therefore, when the wood screws 11a and 11b for wall hanging are screwed in vertically from the surface of the housing bottom cover 10b, the outer dimensions of the housing 10 inevitably become large. There is.

The present invention has been made in view of the above problems.
(EN) Provided is a housing attachment screw mounting structure for an electronic device, which makes it possible to attach and attach the wood screw by a screwing method without increasing the outer dimensions of the housing according to the length of the wall-mounting wood screw. The purpose is to

[0009]

Therefore, in the present invention, the wall-mounting wood screw is held in the space between the housing bottom cover and the printed circuit board in parallel with the printed circuit board.
It is conceivable to provide a screw hole on the side surface of the bottom cover of the housing and screw the wood screw vertically from the side surface of the housing.

In this case, a convenient and reliable screwing method can be adopted to minimize the outer dimensions of the housing without affecting the length of the wood screw, but simply by using the side wall of the bottom cover of the housing. In the structure in which only the screw holes are provided, when the housing bottom lid is manufactured by a mold, it is necessary to use a slide mold in addition to the conventional mold from the vertical direction, and the mold cost becomes expensive ( (See FIG. 4). For this reason, we have devised a wood screw mounting structure that can be easily manufactured with only a vertical mold.

That is, in the structure for mounting screws attached to the housing of an electronic device according to the present invention, one lid and the other lid are combined, and a printed circuit board is arranged between the one lid and the other lid parallel to the lid surface. A wood screw for hanging a wall of an installed electronic device housing is attached to the housing, and the side surface of the one or the other lid has a height higher than at least the width of the wood screw head from the surface side of the lid. And a first U-shaped screw pressing portion having a width corresponding to the wood screw diameter, which is formed from the back surface direction of the lid with respect to the bottom surface of the mounting recess parallel to the side surface of the lid. An inverted U-shaped screw retainer formed adjacent to the first U-shaped screw retainer from the surface direction of the lid and having a width communicating with the U-shaped width of the first U-shaped screw retainer, and the inverted U-shaped screw retainer. Formed from the back side of the lid adjacent to the section A second U-shaped screw retainer having a width communicating with the U-shaped width of the first U-shaped screw retainer through the inverted U-shaped screw retainer, and the inverted U-shaped screw retainer from the second U-shaped screw retainer. Part to the first U-shaped screw retainer, and a wood screw threadedly inserted into the first U-shaped screw retainer, and the depth of the mounting recess to the second U-shaped screw retainer is set to be at least a length exceeding the height of the wood screw head. In addition, the length between the first U-shaped screw retaining portion and the second U-shaped screw retaining portion is set to be equal to or less than the length of the wood screw engaging portion at the longest.

[0012]

In other words, the above-mentioned wood screws for hanging on the wall are screwed in parallel to the printed circuit board inside the casing from the side of the casing, and are fitted inwardly from the side of the casing. The first U-shaped screw pressing portion to the second U-shaped screw pressing portion into which the wood screws for wall mounting are screwed and inserted are formed simultaneously by press cutting when one or the other lid is manufactured by the upper die and the lower die. Therefore, wood screws can be attached easily and securely without increasing the size of the housing.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1A and 1B show a structure for mounting a screw attached to a housing of an electronic device. FIG. 1A is a sectional view of the same and FIG. 1B is a right side view thereof.

The case 20 of the electronic device product is a case upper lid 10.
a and the bottom cover 21 of the housing are combined together.
In the inside of 0, the printed circuit board 12 has a housing upper lid 10a.
And the housing bottom lid 21 are arranged in parallel with the lids 10a and 21. In this case, various electronic components 15 are mounted on the upper surface of the printed circuit board 13, and the lower surface is the copper foil surface 13a. Then, on the right side surface of the housing bottom cover 21, a mounting structure portion Q for the wall-mounting wood screws 11a and 11b is integrally formed.

In the mounting structure Q, the housing bottom cover 2
On the right side surface of the lid 1, a mounting recess 22 having a height higher than at least the width of the heads of the wood screws 11a and 11b from the surface side of the lid 21 is formed.

In this mounting recess 22, the housing bottom cover 2
For the bottom surface parallel to the side surface of 1, the wood screws 11a,
A first U-shaped screw pressing portion 23 having a width corresponding to the screw diameter of 11b is formed by a die from the inner surface direction of the lid 21.

The first recess in the mounting recess 22
An inverted U-shaped screw pressing portion 24 having a width communicating with the U-shaped width of the first U-shaped screw pressing portion 23 is provided adjacent to the U-shaped screw pressing portion 23 from the surface direction of the housing bottom lid 21 in the mold. It is formed.

Further, at a position adjacent to the inverted U-shaped screw pressing portion 24, the first U-shaped screw pressing portion 24 is provided so as to be adjacent to the position.
A second U-shaped screw pressing portion 25 having a width communicating with the U-shaped width of the U-shaped screw pressing portion 23 is formed from the inner surface direction of the housing bottom cover 21 by means of a mold. FIG. 2 is a cross-sectional view showing a mold-molded state of the housing bottom cover 21 in the above-described electronic device housing attachment screw mounting structure.

That is, the mounting recess 22, the first U-shaped screw retaining portion 23, the inverted U-shaped screw retaining portion 24, and the second U-shaped screw retaining portion 25 formed on the housing bottom cover 21 are all the upper die 31 and The lower mold 31 is used alone and is integrally formed with the housing bottom cover 21 by press cutting. In this case,
The depth of the mounting recess 22 to the second U-shaped screw pressing portion 25 is at least the wood screws 11a, 1
The length is set to be greater than the height of the head of 1b, and the first U-shaped screw pressing portion 23 to the second U-shaped screw pressing portion 25 are provided.
The length of the space is set to be at most the length of the threaded portion of the wood screws 11a and 11b.

Then, the first U-shaped screw pressing portion 23 is passed from the second U-shaped screw pressing portion 25 through the inverted U-shaped screw pressing portion 24.
The screw holes 26 are formed so as to connect the U-shaped portions to each other, and the wall-mounting wood screws 11a and 11b are attached to the side surfaces of the housing bottom cover 21 through the screw holes 26. The printed circuit board 13 is screwed in from a direction perpendicular to
It is held horizontally in the internal space between. in this case,
The heads of the wood screws 11a and 11b are mounted in the mounting recess 22 while being submerged therein.

FIG. 3 shows each U-shaped screw retaining portion 2 of the mounting structure portion Q in the screw mounting structure attached to the housing of the electronic device.
Only the parts 3, 24, and 25 are extracted and shown, FIG. 1A is a perspective view thereof, and FIG.

Therefore, according to the structure for mounting screws attached to the housing of the electronic device having the above-described structure, the mounting recess 22 is formed on the side surface of the housing bottom lid 21 from the front surface side of the lid 21, and With respect to the mounting recess 22, a first U-shaped screw pressing portion 23 having a width corresponding to the screw diameters of the wood screws 11a and 11b is provided from the inner surface side of the housing bottom lid 21 so as to face the recess bottom surface parallel to the housing side surface. , The inverted U-shaped screw pressing portion 24 is formed adjacently and integrally from the front surface side of the housing bottom lid 21 and the second U-shaped screw pressing portion 25 is formed from the inner surface side of the housing bottom lid 21 to form a U-shape. The wood screws 11a and 11b are screwed and inserted into the screw holes 26 that communicate the shape portions from a direction perpendicular to the side surface of the housing bottom cover 21, and are held horizontally in the internal space between the printed circuit board 13 and the printed circuit board 13. Since it is designed to be used, it is safe with only a pair of upper and lower molds. Be fabricated without increasing the cabinet size, reliably wood screws 11a, 11b and can be mounted accessory.

[0023]

As described above, according to the present invention, an electronic device in which one lid and the other lid are combined and a printed circuit board is arranged between the one lid and the other lid in parallel to the lid surface A wood screw for hanging the wall of the housing is attached to the housing, and is formed on the side surface of the one or the other lid with a height higher than at least the width of the wood screw head from the surface side of the lid. A mounting concave portion, a first U-shaped screw pressing portion having a width corresponding to the wood screw diameter, which is formed from a rear surface direction of the lid with respect to a bottom surface parallel to the side surface of the lid of the mounting concave portion;
An inverted U-shaped screw retainer having a width formed adjacent to the U-shaped screw retainer from the surface direction of the lid and having a width communicating with the U-shaped width of the first U-shaped screw retainer, and the inverted U-shaped screw retainer. Is formed from the back side of the lid adjacent to the
A second U-shaped screw retainer having a width communicating with the U-shaped width of the first U-shaped screw retainer through the U-shaped screw retainer, and the second U-shaped screw retainer to the reverse U-shaped screw retainer to the first U-shaped A wood screw threadedly inserted into the screw pressing portion, and the depth of the mounting recess to the second U-shaped screw pressing portion is set to at least a length exceeding the height of the wood screw head. Since the length between the 1U-shaped screw pressing portion and the second U-shaped screw pressing portion is set to be equal to or less than the length of the wood screw threaded portion at the longest, the external dimensions of the housing are determined according to the length of the wood screw for wall hanging. It is possible to provide a housing attachment screw attachment structure of an electronic device which can be easily attached and attached with the wood screw by a screwing method without increasing the size.

[Brief description of drawings]

FIG. 1 is a diagram showing a structure for mounting a screw attached to a housing of an electronic device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a mold-molded state of a housing bottom lid in the housing accessory screw attachment structure of the electronic device.

FIG. 3 is a diagram in which only each U-shaped screw retaining portion of the mounting structure portion Q in the screw mounting structure attached to the housing of the electronic device is extracted and shown.

FIG. 4 is a cross-sectional view showing a state where a screw hole is formed on the side surface of the housing using upper and lower molds and a slide mold.

FIG. 5 is a cross-sectional view showing a conventional screw attachment structure attached to a housing of an electronic device.

[Explanation of symbols]

10a ... top cover of housing, 11a, 11b ... wood screws for wall hanging,
13 ... Printed circuit board, 13a ... Copper foil surface, 15 ... Parts, 2
0 ... Casing, 21 ... Casing bottom cover, 22 ... Mounting recess, 23 ...
First U-shaped screw retainer, 24 ... Inverse U-shaped screw retainer, 2
5 ... 2nd U-shaped screw pressing part, 26 ... screw hole, 31 ... upper mold, 32 ... lower mold, Q ... mounting structure part.

Claims (1)

[Scope of utility model registration request] 1. The one lid and the other lid are joined together,
In a housing attachment screw mounting structure for an electronic device, wherein a wood screw for wall mounting of an electronic device housing, in which a printed circuit board is arranged in parallel with the lid surface between the one and the other lid, is attached to the housing, An attachment recess formed on a side surface of the other lid from the surface side of the lid with a height at least larger than the width of the wood screw head, and the lid with respect to a bottom surface of the attachment recess parallel to the side surface of the lid. And a first U-shaped screw retainer portion having a width corresponding to the wood screw diameter, and a first U-shaped screw retainer formed adjacent to the first U-shaped screw retainer portion from the surface direction of the lid. An inverted U-shaped screw pressing portion having a width communicating with the U-shaped width of the portion, and a reverse U-shaped screw pressing portion formed adjacent to the reverse U-shaped screw pressing portion from the back surface direction of the lid, 1U
A second U-shaped screw retaining portion having a width communicating with the U-shaped width of the U-shaped screw retaining portion, and the second U-shaped screw retaining portion is screw-inserted from the reverse U-shaped screw retaining portion to the first U-shaped screw retaining portion. And a depth of the mounting recess to the second U-shaped screw pressing portion is set to be at least longer than the height of the wood screw head, and the first U-shaped screw pressing portion to the second U-shaped screw pressing portion are provided. A structure for mounting a screw attached to a housing of an electronic device, wherein the length between the letter-shaped screw holding portions is set to be at most the length of the wood screw screwing portion or less.