JPH08204363A - Holding structure for printed board in electronic apparatus - Google Patents

Abstract

PURPOSE: To prevent errors in the case of the assembling of an electronic apparatus while facilitating the alignment of the connector of a printed board side with the connector housing of a back board side. CONSTITUTION: A holding structure for printed boards which comprises a support 10 fastened to a back board 3 U-shaped whose outline-form comprises a base side 10a and a pair of lateral sides 10b orthogonal to the base side 10a. The base side 10a has an implanted pin 11 and a connector housing 14 capable of accepting a connector of the printed board side. On the opposite surfaces of the paired lateral sides 10b, ventilation holes 20 and guide grooves 15 for inserting the printed board thereinto are provided respectively. Thereby, the connector of the printed board side is prevented from being engagement- connected faultily with the connector housing 14 of the back board side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device such as a communication device, which is provided with a large number of printed circuit boards mounted with electronic circuits.
The present invention relates to a structure for securely and orderly holding a backboard or the like in a device.

[0002]

2. Description of the Related Art Generally, a printed circuit board has an electronic circuit mounted thereon, and a connector is mounted along one side of the printed circuit board. Such a printed circuit board is mounted on a backboard which occupies a vertical position with respect to the printed circuit board. At this time, the connector of the printed board is fitted and connected to the contact pin provided on the backboard. An electronic device is configured by mounting a large number of such printed boards on a backboard. When mounting the printed circuit board on the backboard, it is necessary to hold the printed circuit board.

Conventionally, a structure for holding a printed circuit board in an electronic device has been proposed. An example of a conventional holding structure is shown in FIG. A plurality of connector housings 14 are mounted on the backboard 3, and a large number of connector pins 11 are implanted in each connector housing 14. A connector of a printed circuit board (not shown) is fitted and connected to the connector housing 14. A shelf 17 for holding a plurality of printed circuit boards is mounted on the backboard 3 so as to surround the plurality of connector housings 14. The shelf 17 has a box shape. A pair of guide rails 18 are held on the upper and lower surfaces of the shelf 17. Guide rail 18
Has a plurality of guide grooves 15 having a cross-sectional shape and dimensions that allow the printed board to slide in the axial direction but restrict movement in the other directions.

FIG. 5 shows another printed circuit board holding structure. A large number of connector pins 11 are planted on the backboard 3. On the backboard 3, a pair of supports 10 'are fixed in a cantilever manner by projecting forward with the connector pin 11 interposed therebetween. The support 10 'has a guide groove 15 having a cross-sectional shape and dimensions that allow the printed circuit board to slide in the axial direction but restrict movement in the other direction. The base of the support 10 'has a connector housing 14' capable of receiving a connector on the printed circuit board side. The printed circuit board holding structure shown in FIG. 5 is the same as that disclosed in Japanese Patent Laid-Open No. 4-113369, except that a pair of rod-shaped guides is not provided.
It has substantially the same structure.

[0005]

In the conventional printed circuit board holding structure shown in FIG. 4 as described above, a dedicated shelf 17 for holding a plurality of printed circuit boards is required. The increase in the number increases the risk that the member holding the guide rail 18 of the shelf 17 is bent and the printed circuit board comes off. further,
It is difficult to align the connector on the printed board side with the connector housing 14 on the backboard 3 side. This is because the connector housing 14 and the guide rail 18 are manufactured as separate parts, so that an error is likely to occur during assembly.

Even if the connector housing 14 'and the guide groove 15 are integrally formed as shown in FIG. 5, the printed circuit board may come off. The reason for this is that since the supports 10 'in which the connector housing 14' and the guide groove 15 are integrally formed are formed in a pair of upper and lower parts to hold the printed circuit board, an error may occur when the back board 3 is assembled. This is because it is likely to occur.

The present invention has been made to solve the above problems, and an object thereof is to provide a printed circuit board holding structure in an electronic device which enables highly accurate connector connection between a printed circuit board and a backboard. To do.

[0008]

In order to achieve the above object, a printed circuit board holding structure in an electronic device according to the present invention has a connector mounted on the printed circuit board along one side of the printed circuit board on which an electronic circuit is mounted. To a support mounted on a backboard that occupies a vertical position with respect to the printed circuit board and having contact pins implanted therein,
In a holding structure for a printed circuit board in an electronic device configured by fitting and connecting, the support includes a base side on which the contact pin is planted, and a pair of side sides orthogonal to the base side and facing each other. And a guide groove having a cross-sectional shape and dimensions that allow axial sliding of the printed circuit board but restrict movement in other directions. The base side is provided with a connector housing capable of receiving the connector on the printed circuit board side.

[0009]

When the electronic device is constructed, the connector pins planted in the support are fixed in the through holes on the backboard without inserting into the size of the printed circuit board in the height direction. The printed circuit board is introduced into the guide groove from the free end side of the support fixed on the backboard,
It is guided precisely along the guide groove without swinging to the left or right, and approaches the backboard. Near the terminal end, the connector of the printed circuit board is accurately fitted to the connector housing on the support, and is fitted and connected to the contact pin on the backboard, so that the positional relationship thereof is firmly secured.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a perspective view of a printed circuit board holding structure according to an embodiment of the present invention.

The illustrated printed circuit board holding structure comprises a support 10 fixed to the backboard 3.
The support 10 is a plastic molded product having a U-shaped outer shape, which includes a base side 10a and a pair of side sides 10b orthogonal to the base side 10a and facing each other.

On the back wall of the base 10a, contact pins 11 are regularly planted at predetermined positions.
Are received in the through holes 12 of the backboard 3.
Further, a housing 14 is formed on the inner surface side of the base side 10a, which can receive a connector 13 on the printed circuit board side, which will be described later. The bottom wall of the side edge 10b is provided with a vent hole 20 for cooling the heat generated by the electronic components mounted on the printed circuit board.

FIG. 2 shows a sectional view of the side edge 10b. Side 1
A guide groove 15 for inserting a printed circuit board extends over the entire length of the convex surface of 0b. In this U-shaped support 10, the back wall of the base 10a is attached to the backboard 3
Placed on the surface of. Then, the support 10 is positioned by inserting the contact pins 11 implanted in the support 10 into the through holes 12 of the backboard 3.
0 is fixed by a mounting screw 16 in a posture in which it projects from the backboard 3.

FIG. 3 is a perspective view showing the printed circuit board 2 being inserted into the support 10. When the printed board 2 is held in a fixed position with respect to the backboard 3 and the connector is connected, the support 10 protruding from the backboard 3 is used.
The printed circuit board 2 is prevented from moving in the vertical direction by the guide groove 15, and is slid only in the longitudinal direction and inserted in the back.

This insertion is performed by the upper and lower side edges 10 of the support 10.
Since it is performed by the accurate engagement by the guide grooves 15 facing each other in the longitudinal direction of b, the connector 13 of the printed circuit board 2 can be accurately fitted with the contact pin 11 on the support 10 side.

It is needless to say that the present invention is not limited to the above-mentioned embodiments, and that various modifications may be made without departing from the scope of the present invention.

[0017]

As described above, according to the present invention, the support itself protruding from the backboard has both a guide rail function for the printed circuit board and a connector housing function.
Moreover, since the contact pins are planted in the support and press-fitted directly into the through holes of the backboard, highly accurate connector connection between the printed circuit board and the backboard is possible. Further, in the holding structure of the present invention, since the backboard is used as a part of the structural skeleton, it is possible to reduce the number of constituent parts. Moreover, when it is directly mounted on a cabinet or the like, since it can be configured only by a backboard on which a support is mounted, there is an advantage that a box-shaped shelf is not required.

[Brief description of drawings]

FIG. 1 is a perspective view showing a structure of a support and a backboard according to an embodiment of the present invention.

2 is a cross-sectional view of the support shown in FIG.
It is sectional drawing seen from the line.

FIG. 3 is a perspective view showing a printed circuit board being inserted into a support.

FIG. 4 is a perspective view showing an example of a conventional holding structure.

FIG. 5 is a perspective view showing another example of a conventional holding structure.

[Explanation of symbols]

 2 Printed circuit board 3 Backboard 10 Support 11 Contact pin 12 Through hole 13 Connector 14 Connector housing 15 Guide groove 16 Mounting screw 17 Shelf 18 Guide rail 20 Vent hole

Claims (2)

[Claims] 1. A printed circuit board (2) on which an electronic circuit is mounted.
A connector (13) mounted on the printed circuit board along one side of the printed circuit board is mounted on a backboard (3) occupying a vertical position with respect to the printed circuit board, and contact pins (11) are implanted. A support structure for a printed circuit board in an electronic device, which is configured to be fitted and connected to an existing support (10), wherein the support (10) includes a base side (10a) in which the contact pin is planted, It has a U-shaped outer shape consisting of a pair of side edges (10b) orthogonal to the base side and facing each other, and the side edges allow sliding of the printed circuit board in the axial direction but in other directions. Has a guide groove (15) having a cross-sectional shape and dimensions for restricting movement of the electronic component, and the base side is provided with a connector housing (14) capable of receiving the connector on the printed circuit board side. On equipment Holding structure of the printed circuit board that. 2. A vent hole (2) for cooling the heat generation of an electronic component mounted on the printed circuit board, on the bottom wall of the side edge.
0) is provided, The printed circuit board holding structure according to claim 1.