JPH0964566A - Fixing structure of board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a structure for fixing upper and lower boards arranged in parallel and connected through a connector easily from above by absorbing the positional shift at the time of simultaneous connection. SOLUTION: A lower printed wiring board 2 is fixed to a horizontal lower fixing piece 1a provided on the side face of a chassis 1 and a second fixing metal 5 having a horizontal protrusion 5a is secured to an upper printed wiring board 3. The protrusion 5a is inserted slidingly into an elongated inclining hole 4b made at the vertical part of a first fixing metal 4 and held in place. A screw 7 is inserted slidingly into an elongated hole 4a made in the horizontal part of first fixing metal 4 and corresponds to the screw hole of a horizontal upper fixing piece 1b and then it is screwed into the screw hole of the upper fixing piece 1b thus securing the first fixing metal 4 to the upper fixing piece 1b. According to the structure, upper and lower printed wiring boards 2, 3 connected through connectors 2a, 3a can be secured while absorbing the relative positional shift through the elongated hole 4a and the inclined hole 4b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a board used in a personal computer or the like, and more specifically, to a vertically parallel board which is connected by opposing connectors and which is misaligned when the board is connected. The present invention relates to a structure capable of absorbing the above and easily attached from above.

[0002]

2. Description of the Related Art As shown in FIG. 2 (A), a conventional board mounting structure used in a personal computer or the like is such that, as shown in FIG. A horizontal mounting piece 1a and 1b having screw holes (not shown) is formed by bending, and mounting holes (not shown) corresponding to the screw holes are provided, so that they can be electrically connected to each other. While connecting the connectors 2a and 3a to a lower printed wiring board 2 provided with facing connectors 2a and 3a, respectively, and an upper printed wiring board 3
The screws 6 and 8 inserted through the attachment holes are screwed into the screw holes and attached. However, in the above configuration, the screw holes and the mounting holes are displaced due to the displacement when the connectors 2a and 3a are connected, and therefore, the mounting positions of the connectors 2a and 3a and the screw Since the structure requires high-precision processing so that the positions of the holes and the mounting holes are not displaced, there is a problem in that it is disadvantageous in terms of cost. Alternatively, in the above configuration, as shown in FIG. 2B, for example, an L-shaped fixture 1b is laterally screwed and fixed to the upper side surface of the chassis 1 with a screw 7, and the fixture 1b is attached to the chassis 1b. The screw 8 inserted through the mounting hole is screwed into a screw hole (not shown) provided, and the upper printed wiring board 3 is mounted. However, in the above-described configuration, there is a cost disadvantage as in the case described with reference to FIG. 2A, and it is necessary to screw the attachment tool 1b from the lateral direction to fix the attachment tool 1b to the chassis 1. For,
It had a problem of poor workability.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, in which vertically parallel substrates connected by opposite connectors are absorbed by the positional deviation during the connection. It is an object of the present invention to provide a substrate mounting structure that can be easily mounted from above.

[0004]

In order to solve the above problems, horizontal mounting pieces having screw holes are provided on the upper and lower sides of a chassis, and mounting holes corresponding to the screw holes of the lower mounting pieces are provided. The lower printed wiring board is fixed by screwing it into the screw hole with a screw inserted through the mounting hole, and the lower printed wiring board and the mounting hole corresponding to the screw hole of the upper mounting piece are provided. Connect the upper printed wiring board with the upper and lower printed wiring boards with the connectors provided facing each other,
In a structure in which a screw is inserted through a mounting hole of the upper printed wiring board and is screwed and fixed to a screw hole of the upper mounting piece, the screw is provided between the upper mounting piece and the upper printed wiring board. A horizontal part having a long hole corresponding to the hole, and a first attachment comprising a vertical part having an inclined hole obtained by inclining the long hole, and a vertical part having a convex piece corresponding to the inclined hole on the back surface, And a second fixture including a horizontal portion having a screw hole corresponding to the attachment hole, and the second fixture by being screwed into the screw hole of the second fixture with a screw inserted through the attachment hole. Is fixed to the upper printed wiring board, the convex piece is slidably inserted into the inclined hole to hold the second fixture, and the screw of the upper attachment piece is screwed by the screw inserted through the elongated hole. Screw it into the hole and fix the first fitting to the upper mounting piece. Characterized in that it was. Further, the lengths of the elongated hole and the inclined hole in the horizontal direction are substantially the same. In addition, the protrusions are integrally formed in the screw holes of the upper and lower mounting pieces and the screw holes of the second mounting tool. Further, the convex piece is provided substantially at the center of the vertical portion of the second attachment. Further, the convex piece is formed integrally with the second attachment.

[0005]

With the above structure, the vertically parallel substrates connected by the opposing connectors can be easily mounted from above by absorbing the positional deviation during the connection. It has a mounting structure.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. In FIGS. 1A, 1B and 1C, 1 is a chassis that constitutes the housing of a personal computer, and 1a is the chassis 1
Although it is not shown in the drawings, the lower mounting piece 1a is a horizontal mounting piece formed by cutting and raising the lower surface of the side surface, and a screw hole is provided. Reference numeral 1b is an upper mounting piece formed by cutting and / or bending the upper side surface of the chassis 1 in a horizontal shape. The upper mounting piece 1b is provided with a screw hole (not shown). It has been configured. The upper mounting piece 1b and the lower mounting piece 1a have screw holes integrally formed with a projecting portion a, and the projecting portion a provides a cost-effective structure. The configuration is such that the tightening strength when the screws described below are respectively screwed into the screw holes can be improved.

Reference numeral 2 is a lower printed wiring board having mounting holes (not shown) corresponding to the screw holes of the lower mounting piece 1a. 2a is one connector attached to the lower printed wiring board 2 and is the same connector 2a
Is connected to the other connector attached to the upper printed wiring board described later. Reference numeral 3 denotes an upper printed wiring board which is mounted above the lower printed wiring board 2 in a substantially parallel state. 3a is the other connector that is attached to the upper printed wiring board 3 facing the one connector 2a. By connecting the other connector 3a and the one connector 2a, The wiring boards 2 and 3 are electrically connected to each other.

Reference numeral 4 denotes an L-shaped first mounting tool composed of a horizontal portion corresponding to the upper mounting piece 1b and a vertical portion hanging down from one side of the horizontal portion. , The lower printed wiring board 2 is screwed and fixed to the lower mounting piece 1a by a screw to be described later by a second mounting tool described later, and after connecting the both connectors 2a and 3a, the same connection is made. The printed wiring board 3 on the upper side can be easily fixed by absorbing the positional deviation at the time. As shown in FIG. 1 (B), 4a is an elongated hole provided in the horizontal portion of the first fixture 4 corresponding to the screw hole of the upper attachment piece 1b. The elongated hole 4a allows the first fixture 4 to slide with respect to a screw, which will be described later, inserted through the elongated hole 4a. As shown in FIG. 1 (C), 4b is an inclined hole which is formed by inclining a long hole in the vertical portion of the first attachment 4 in correspondence with the convex piece of the second attachment described later. The inclined hole 4b is configured to be slidably inserted through a convex piece of a second mounting tool, which will be described later, which is inserted through the inclined hole 4b, so that the second mounting tool can be held. With the elongated hole 4a and the inclined hole 4b, the first holder 4 can slide with respect to a screw, which will be described later, inserted through the elongated hole 4a,
By making it possible to hold the second attachment by slidably inserting the convex piece of the second attachment described later, as described above, the positional deviation when connecting the both connectors 2a and 3a Since it can be absorbed, the upper printed wiring board 3 does not depend on the dimensional accuracy of each constituent member.
Is configured to be easily fixed from above. Reference numeral 5 denotes an L-shaped second mounting tool that is provided corresponding to the first mounting tool 4 and that includes a vertical portion and a horizontal portion.
Reference numeral 5a is a convex piece integrally formed in the substantially vertical center of the vertical portion of the second attachment 5 so as to correspond to the inclined hole 4a. Since the convex piece 5a is integrally formed substantially in the center of the rear surface of the vertical portion of the second mounting tool 5, the dimensional shape can be accurately finished and the cost can be improved. It can be slid smoothly by being inserted into the inside of 4b, and the second attachment 5 can be attached to the vertical portion of the first attachment 4.
The vertical portion is substantially in a close contact state so that the convex piece 5a can be accurately held by the inclined hole 4b.
A screw hole (not shown) corresponding to the mounting hole of the upper printed wiring board 3 is provided in the horizontal portion of the second mounting member 5, and the upper printed wiring board 3 is provided in the screw hole. The above-mentioned printed wiring board can be easily fixed by screwing a screw, which will be described later, which is inserted through the mounting hole, from above. In addition, the screw hole of the horizontal portion of the second mounting member 5 is integrally formed with the protrusion a, so that the cost-effective structure improves the tightening strength when the screw to be described later is screwed. It has a configuration that allows it. Reference numeral 6 denotes a screw for fixing the lower printed wiring board 2 by inserting the mounting hole of the lower printed wiring board 2 into the screw hole of the lower mounting piece 1a. Reference numeral 7 is a screw for fixing the printed wiring board 3 on the upper part by inserting the elongated hole 4a of the first fitting 4 into the screw hole of the mounting piece 1b on the upper part. Numeral 8 is for fixing the second mounting tool 5 to the upper printed wiring board 3 by inserting the mounting hole of the upper printed wiring board 3 into the screw hole of the second mounting tool 5. It is a screw.

With the above construction, the screw 6 inserted through the mounting hole of the lower printed wiring board 2 is screwed into the screw hole of the lower mounting piece 1a to fix the lower printed wiring board 2. Next, the screw 8 inserted through the mounting hole of the upper printed wiring board 3 is screwed into the screw hole of the second mounting tool 5 to attach the second mounting tool 5 to the upper printed wiring board 3. Then, the two connectors 2a and 3a are connected to each other, the convex piece 5a is slidably inserted into the inclined hole 4b, and the screw 7 is inserted through the elongated hole 4a. Long hole
By sliding the 4a into the screw hole of the mounting piece 1b on the upper part of the chassis 1, the positional deviation of the upper printed wiring board 3 positioned by connecting the two connectors 2a and 3a is absorbed. In this state, the printed wiring board 3 on the upper side can be easily fixed from above to provide a board mounting structure.

[0010]

As described above, according to the present invention, the vertically parallel substrates connected by the opposing connectors can be easily attached from above by absorbing the positional deviation during the connection. It becomes the mounting structure of the board.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a mounting structure of a substrate according to the present invention,
(A) is a cross-sectional view of a main part, (B) is a view taken in the direction of arrow A shown in (A), and (C) is a view taken in the direction of arrow B shown in (A).

FIG. 2 is an explanatory view showing a mounting structure of a board according to a conventional example,
(A) is an essential part sectional view showing a first example, and (B) is an essential part sectional view showing a second example.

[Explanation of symbols]

 1 Chassis 1a Lower mounting piece 1b Upper mounting piece 2 Lower printed wiring board 2a One connector 3 Upper printed wiring board 3a Other connector 4 First mounting tool 4a Long hole 4b Inclined hole 5 Second mounting tool 5a Convex Piece 6, 7, 8 Screw a Threaded hole protrusion

Claims (5)

[Claims] 1. A horizontal mounting piece having screw holes is provided on upper and lower side surfaces of a chassis, and a lower printed wiring board having mounting holes corresponding to the screw holes of the lower mounting piece is attached to the same mounting hole. The screw is inserted into the screw hole and fixed to the screw hole, and the lower printed wiring board and the upper printed wiring board having a mounting hole corresponding to the screw hole of the upper mounting piece,
A structure in which the upper and lower printed wiring boards are connected to each other by connectors provided opposite to each other, and are screwed into and fixed to the screw holes of the upper mounting piece with screws inserted through the mounting holes of the upper printed wiring board. , Between the upper mounting piece and the upper printed wiring board,
A first attachment including a horizontal portion having a long hole corresponding to the screw hole and a vertical portion having an inclined hole obtained by inclining the long hole, and a vertical portion provided with a convex piece corresponding to the inclined hole on the back surface. Department,
And a second fixture including a horizontal portion having a screw hole corresponding to the attachment hole, and the second fixture by being screwed into the screw hole of the second fixture with a screw inserted through the attachment hole. Is fixed to the upper printed wiring board, the convex piece is slidably inserted into the inclined hole to hold the second fixture,
A mounting structure for a board, characterized in that the first mounting member is fixed to the mounting piece of the upper part by being screwed into a screw hole of the mounting piece of the upper part with a screw inserted through the elongated hole. 2. The mounting structure for a board according to claim 1, wherein the horizontal lengths of the elongated hole and the inclined hole are substantially the same. 3. The board mounting structure according to claim 1, wherein a projection is integrally formed in the screw holes of the upper and lower mounting pieces and the screw holes of the second mounting tool. 4. The mounting structure for a substrate according to claim 1, wherein the convex piece is provided substantially in the center of a vertical portion of the second mounting tool. 5. The board mounting structure according to claim 1, wherein the convex piece is formed integrally with the second mounting member.