JPH075677Y2 - Daughter board cover structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Overview] Regarding a cover structure for mechanically protecting and shielding a daughter board, it is possible to easily assemble the cover plate of the daughter board and also protect the daughter board electromagnetically. For the purpose of providing a possible cover structure, a daughter board having reinforcing frames attached to a pair of opposing side edges, and a groove engaging with another side edge different from the side edge of the daughter board, A pair of guide frames provided with another groove above and below the groove and further provided with ventilation holes, and a pair of upper and lower cover plates made of a conductive material that engages with the other groove. And a screw member for fixing the guide frame to the reinforcing frame.

[Industrial application field]

The present invention relates to a cover structure for mechanically protecting and shielding a daughter board.

[Conventional technology]

Referring to FIG. 2, conventionally, in order to mechanically protect the daughter board 10 on which the integrated circuit 22 and the like are mounted, the upper and lower sides of the daughter board 10 are covered with cover plates 30 and 32. In this case, when the cover plate is attached to the daughter board 10, the spacers 34 or 36 are interposed above and below the daughter board 10 and fixed by the screw member 38a and the nut 38b.

[Problems to be solved by the device]

However, in the assembling process using a large number of spacers and screw members, it takes time and labor, and efficient assembling work is impossible.

Therefore, the present invention aims to provide a cover structure capable of easily assembling a cover plate of a daughter board and also capable of electromagnetically protecting the daughter board in order to solve such a problem. To do.

[Means for Solving the Problems]

In view of the above object, the present invention provides a daughter board having a pair of opposing side edges with reinforcing frames, a groove for engaging another side edge different from the side edge of the daughter board, and a groove of the groove. A pair of guide frames provided with other grooves at upper and lower positions and further provided with ventilation holes, an upper and lower pair of cover plates made of a conductive material engaging with the other grooves, and the guides. A daughter board cover structure comprising: a screw member for fixing the frame to the reinforcing frame.

[Action]

The daughter board and the upper and lower cover plates can be directly engaged with the respective grooves of the guide frame or can be easily engaged with each other by sliding from the end portions. In order to prevent the guide frame from coming off from the daughter board,
It is fixed to the end of the reinforcing frame provided on the other edge of the daughter board via a screw member. Two or four screw members are sufficient for one guide frame, and the assembling work is easy.

〔Example〕

Hereinafter, the present invention will be described in more detail with reference to the embodiments shown in the accompanying drawings. Referring to FIG. 1, a daughter board 10 having electronic components such as an integrated circuit 22 mounted on one side is usually provided with a reinforcing frame 12 along a pair of side edges 10a facing each other for reinforcement thereof. ing. In order to hold the daughter board 10, a guide frame 14 having a groove 14a for engaging another side edge portion 10b where the reinforcing frame 12 is not provided is prepared. Upper and lower predetermined height positions of the groove 14a are formed with other grooves 14b and 14c for engaging side edges of cover plates 16 and 18, which will be described later, and a ventilation hole 14d. It is provided.

The cover plates 16 and 18 are put over to protect the daughter board 10, and in particular to protect each mounting component 22. This protection includes protection from a mechanical external force and protection by an electromagnetic shield function.In the present invention, the cover plate 16, which is made of a metal plate or other conductive material, serves as both protections. Forming eighteen. Groove these cover plates 16 and 18
In the case of engaging with 14b, 14c, or in order to engage the daughter board 10 with the groove 14a, each side edge may be inserted directly, or by sliding from the end to insert and engage. Good. In order to prevent the guide frame 14 from coming off the daughter board 10, through holes 14e are provided at both ends of the guide frame 14,
The reinforcing frame 12 is located at a position corresponding to the hole 14e.
A screw hole is formed in the end portion 12a of the, and is fastened and fixed by the screw member 20. To facilitate the assembly work, after screwing the guide frame 14 to the daughter board 10,
The upper and lower cover plates 16 and 18 may be slid and inserted into the grooves 14b and 14c. In this case, in order to easily insert the cover plates 16 and 18 into the groove, the fastening of the guide frame 14 by the screw member 20 is loosened, and the cover plates 16 and 18 are strongly fastened after being inserted.
After firmly tightening the screw member 20 in this way, the daughter board
The upper and lower cover plates 16 and 18 are also integrated with the guide frame 14.

As described above, since the guide frame 14 is provided with the ventilation hole 14d, while cooling each electronic component 22 between the ventilation hole of the guide frame on the opposite side (not shown) and the ventilation hole 14d shown in FIG. Can flow air.

[Effect of device]

As is apparent from the above description, according to the present invention, the cover plate capable of mechanically and electromagnetically protecting the daughter board can be easily assembled.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a daughter board cover structure according to the present invention, and FIG. 2 is an exploded perspective view of a conventional daughter board cover structure. 10 …… Daughter board, 12 …… Reinforcement frame, 14 …… Guide frame, 14a, 14b, 14c …… Groove, 14d …… Ventilation hole, 16,1
8 …… Cover plate, 20 …… Screw member.

Claims (1)

[Scope of utility model registration request] 1. A daughter board (10) having reinforcing frames (12) attached to a pair of opposing side edges (10a), and another side edge (10) different from the side edges of the daughter board.
a groove (14a) that engages with b), and a pair of guide frames (14) provided with other grooves (14b, 14c) above and below the groove and further with ventilation holes (14d). A pair of upper and lower cover plates (16, 18) made of a conductive material that engages with the other groove, and a screw member (20) for fixing the guide frame to the reinforcing frame. The daughter board cover structure.