JP2606531B2 - Combined integrated structure of sheet metal parts and printed wiring board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an integrated structure of a sheet metal part and a printed wiring board used for a small radio equipment or the like.

[0002]

2. Description of the Related Art FIG. 3 shows a conventional integrated structure of a sheet metal part and a printed wiring board. The sheet metal part 1 and the printed wiring board 2 are joined and integrated by screws 3 as separate members. I have.

[0003]

However, in the above-mentioned conventional example, since a separate member called a screw is required for connecting and integrating the sheet metal part and the printed wiring board, the number of parts cannot be reduced, and the screw fastening is not possible. There was a problem that the work was troublesome. Further, there is a problem that the space for screw fastening, which must be provided in each of the sheet metal component and the printed wiring board, hinders miniaturization of the product. Further, there is a problem that the screw fastening may be loosened due to vibration or the like, and the integrated connection between the sheet metal component and the printed wiring board may be released.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the prior art, and has as its object to easily integrate a sheet metal component and a printed wiring board in a small space without using any other member such as a screw. An object of the present invention is to provide an integrated structure of a sheet metal component and a printed wiring board that can be performed and that does not come off due to vibration or the like.

[0005]

In order to achieve the above object, in the integrated structure of a sheet metal part and a printed wiring board according to the present invention, the sheet metal part is formed on a substantially rectangular sheet metal part. A printed wiring board formed in substantially the same shape as described above, is configured to be connected and integrated by sliding in parallel while maintaining a constant interval, and on the left and right sides of the sheet metal part,
A total of four plate-like abutments are provided to abut the left and right side edges of the printed wiring board at two locations to position the printed wiring board in the width direction. Are formed on the left and right side edges of the printed wiring board, and at least one of the plate-shaped abutting pieces is formed with an engaging extension that engages with the slit groove. The plate spring-shaped inverted claw is formed so as to get over and engage the engaging projections formed on the left and right side edges of the printed wiring board by the relative sliding of the printed wiring board and the sheet metal part.

According to a second aspect of the present invention, when the extending portion of the printed wiring board is engaged with the slit groove of the contact piece of the sheet metal component, the extending portion is provided between the sheet metal component and the printed wiring board. A positioning projection is formed to secure the interval between the sheet metal component and the printed wiring board in a state where the slit groove and the slit groove are aligned in the vertical direction, and to easily engage the extension portion with the slit groove.

[0007]

The plate-like abutting pieces provided on the left and right sides of the sheet metal part are in contact with the left and right side edges of the printed wiring board to position the printed wiring board in the width direction.

When the sheet metal component and the printed wiring board slide relative to each other, the U-shaped slit grooves of the plate-shaped abutting pieces on the left and right sides of the sheet metal component engage with the engagement extending portions on the left and right side edges of the printed wiring board. At the same time, the printed wiring board is positioned vertically.

When the sheet metal component and the printed wiring board slide relative to each other, the reverse claw of the plate-shaped contact piece of the sheet metal component rides over the engaging projection on the side edge of the printed wiring board by a spring action, and is locked. And the extending portion is held in an engaged state, and the printed wiring board is positioned in the front-rear direction.

As described above, the sheet metal part positions the printed wiring board in the width direction, the vertical direction, and the front-back direction, and the sheet metal part and the printed wiring board are combined and integrated.

In addition, since the reverse claw which gets over the engagement protrusion and is locked can be released by using a jig or the like, it is possible to arbitrarily release the integrated connection between the sheet metal component and the printed wiring board. Is possible.

According to the second aspect, the positioning projection formed between the sheet metal component and the printed wiring board is positioned such that the engaging extension and the U-shaped slit groove are vertically aligned.
Since the space between the sheet metal component and the printed wiring board is ensured, the operation of engaging the extension with the slit groove becomes easy.

[0013]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an exploded perspective view of an integrated structure of a sheet metal part and a printed wiring board according to an embodiment of the present invention, and FIG. 2 is a perspective view for explaining an integrated work of the sheet metal part and the printed wiring board. It is.

In these figures, reference numeral 10 denotes a metal sheet metal part (hereinafter simply referred to as “sheet metal”), and reference numeral 20 denotes a sheet metal 1.
0 shows a printed wiring board (hereinafter, simply referred to as a board) that is integrated and integrated. The directions of the sheet metal 10 and the substrate 20 are defined as obliquely upper left as the front side and obliquely lower left as the left as viewed from the front.

The left side 10a and the right side 10 of the sheet metal 10
b includes a left edge 20a and a right edge 20a of the substrate 20.
b from both sides, a total of four plate-like contact pieces 11a, 12a and 11 extending in a direction perpendicular to the substrate 20.
b and 12b are erected. Then, the inner surfaces 13a, 1 of the contact pieces 11a, 12a of the sheet metal left side portion 10a.
4a are contact portions 23a and 24a of the left side edge portion 20a of the substrate.
, Respectively, and contact pieces 11b,
The inner side surfaces 13b and 14b of the substrate 12b are connected to the right edge portion 20b of the substrate.
Contact portions 23b and 24b of the substrate 2
Numeral 0 is positioned so that the sheet metal 10 has no play in the width direction.

Four contact pieces 11a, 11b, 12a, 1
2b, U-shaped slit grooves 15a, 15b, 16a, and 16b each having the same height are formed to have a width to sandwich the substrate 20 and open forward. On the other hand, the contact portion 23
The front portions of a, 23b, 24a, and 24b extend horizontally in the same thickness as the substrate 20, and are formed as engagement extending portions 25a, 25b, 26a, and 26b, respectively.
Then, the substrate 20 is moved backward with respect to the sheet metal 10 (arrow B in FIG. 1).
(See FIG. 2) to extend the extension portions 25a, 25b, 26
a, 26b into slit grooves 15a, 15b, 16a, 16
b respectively, the substrate 20 is
It is positioned so that there is no play in the vertical direction at 0.

The contact pieces 11a and 11b are made up of contact pieces 12a and
12b, the contact pieces 11a,
11b, positioning portions 17a, 1 each having a shape in which the lower portions of the slit grooves 15a, 15b extend in the forward direction as they are.
7b is formed. And this positioning part 17
When the extension portions 25a and 25b are put on the a and 17b from above (see the arrow A in FIG. 1) and the substrate 20 is slid rearward with respect to the sheet metal 10 (see the arrow B in FIG. 1), the slit grooves 15a and
The extension portions 25a and 25b can be easily engaged with the extension 15b.

Reference numerals 18, 18 denote positioning projections projecting from the left and right sides of the rear upper surface of the sheet metal 10 toward the lower surface of the substrate 20, and the heights of the positioning projections 18, 18 are the same as those of the positioning portions 17a, 17b. The height is the same, that is, the same height as the slit grooves 15a and 15b and the slit grooves 16a and 16b. That is, when the extension portions 25a, 25b are brought into contact with the positioning portions 17a, 17b and the positioning projections 18, 18 are brought into contact with the lower surface of the substrate 20, the extension portions 26a, 26b and the slit grooves 16a, 16b are the same. It is designed to be aligned to height. For this reason, the slit grooves 16a and 16b are provided in the slit grooves 15a and 15b.
b, the extension portions 26a,
26b can be easily engaged.

Reference numerals 19a and 19b denote contact pieces 11a and 1
1b shows a leaf spring-shaped inverted claw integrally formed with each other. The reverse claws 19a and 19b are respectively
The front ends 19a and 19b extend rearward from the rear side of the inner side surfaces 13a and 13b of the a and 11b, respectively, and are bent toward the left side edge 20a of the substrate and the right side edge 20b of the substrate, respectively. On the other hand, the reverse claws 19a, 19b are located at positions rearward of the left edge contact portion 23a of the substrate and the right edge contact portion 23b of the substrate.
The engagement projections 29a and 29b corresponding to b are provided in a protruding manner, respectively. The engagement protrusions 29a and 29b are
a, 29b are the left edge 20a of the substrate and the right edge 20b of the substrate
Are formed at right angles to the rear portions 29a, 2
9b are formed obliquely toward the left edge 20a of the substrate and the right edge 20b of the substrate, respectively, and have a saw-tooth shape as a whole.

Then, the substrate 20 is slid backward with respect to the sheet metal 10 (see the arrow B in FIG. 1), and the extension portions 25a,
25b, 26a, 26b are slit grooves 15a, 15b,
16a and 16b (the extension is inserted to the innermost part of the slit groove), and
a, 19b climb over the engagement protrusion rear portions 29a, 29b from the rear and climb over the engagement protrusion front portions 29a, 2b.
9b. In this manner, the engagement between the extension portions 25a, 25b, 26a, 26b and the slit grooves 15a, 15b, 16a, 16b is maintained,
The substrate 20 is positioned on the sheet metal 10 without play in the front-rear direction.

[0022]

As is apparent from the above description, according to the present invention, unlike the prior art, a separate member called a screw is not required for connecting and integrating the sheet metal component and the printed wiring board.
For this reason, the number of parts is reduced by the amount of the screws as compared with the prior art, and there is no troublesome screw fastening work, so that the working time is reduced. Further, since there is no need to provide a space for screw fastening in the sheet metal component and the printed wiring board, the product can be downsized. In addition, since the reverse claw locked to the engagement protrusion by the spring action is unlikely to be unlocked due to vibration or the like, it is unlikely that the integrated integration between the sheet metal component and the printed wiring board will be released due to vibration or the like, By applying the present invention, a product such as a small wireless device that is resistant to vibration and impact can be provided.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a combined integrated structure of a sheet metal part and a printed wiring board according to an embodiment of the present invention.

FIG. 2 is a perspective view illustrating a work of integrating a sheet metal component and a printed wiring board.

FIG. 3 is a perspective view of a conventional integrated structure of a sheet metal part and a printed wiring board.

[Explanation of symbols]

Reference Signs List 10 Sheet metal part 10a Left part of sheet metal part 10b Right part of sheet metal part 11a, 12a Plate contact piece on left side of sheet metal part 11b, 12b Plate contact piece on right part of sheet metal part 13a, 14a Left side of sheet metal part 13b, 14b Inner surface of plate-shaped contact piece on right side of sheet metal part 15a, 16a U-shaped slit groove of plate-shaped contact piece on left side of sheet metal part 15b, 16b Sheet metal U-shaped slit groove 19a of the plate-shaped abutment piece on the right side of the component 19a Reverse claw on the left side of the sheet metal component 19b Reverse claw 17a, 17b on the right side of the sheet metal component Positioning portion 18 as a positioning projection 18 Positioning projection 20 Printed wiring board 20a Left side edge of printed wiring board 20b Right side edge of printed wiring board 23a, 24a Contact point 23b, 24b of left side edge of printed wiring board Contact portions 25a, 26a on the right side edge of the printed wiring board 25b, 26b engagement extending portions 25b, 26b on the right side edge of the printed wiring board 29a printed wiring board Of the left side edge of the printed wiring board 29b

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 63-162588 (JP, U) JP-A 2-8184 (JP, U) JP-A 42-22137 (JP, Y1)

Claims (2)

(57) [Claims] 1. A sheet metal part formed in a substantially rectangular shape,
A printed wiring board formed substantially in the same shape as the sheet metal component is connected and integrated by sliding parallel to each other while maintaining a fixed interval, and left and right sides of the printed wiring board are provided on left and right sides of the sheet metal component. A total of four plate-like abutting pieces for abutting the side edges of the printed wiring board at two places to position the printed wiring board in the width direction are provided, and each abutting piece has a U-shaped slit extending in the same direction in the front-rear direction. A groove is formed, and an engagement extension portion that engages with the slit groove is formed on the left and right side edge portions of the printed wiring board, and at least one of the plate-shaped contact pieces has the print A sheet metal part and a print, characterized in that a leaf spring-like inverted claw is formed to get over and engage the engagement projections formed on the left and right side edges of the printed wiring board by relative sliding between the wiring board and the sheet metal part. Connection with wiring board Embodied structure. 2. The method according to claim 1, wherein when the extension portion of the printed wiring board is engaged with the slit groove of the contact piece of the sheet metal component, the extension portion and the slit groove are provided between the sheet metal component and the printed wiring board. A sheet metal part and a print, characterized in that positioning protrusions are formed to secure a space between the sheet metal part and the printed wiring board in a state where the positions are aligned in the vertical direction and to facilitate engagement with the slit groove of the extension part. Integrated structure with wiring board.