JPS645912Y2 - - Google Patents

Description

Detailed Description of the Invention The present invention is directed to making it easier to support and remove a printed circuit board from a chassis in an electronic device.

Conventionally, in order to attach a printed circuit board to a chassis, mounting hardware has been used in particular, and screws and, if necessary, nuts have been used to perform the mounting operation, but such operations are relatively time-consuming. In short, this requires an undesirable working time when assembling electronic equipment, and jigs and the like are also required.

In view of these points, the present invention is designed to achieve the object with almost a single touch.

Hereinafter, an example of the support device according to the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a chassis made of a metal plate. Reference numeral 2 denotes a printed circuit board to be attached to this, and although not shown, electronic components constituting an electronic circuit are attached thereto, and printed wiring is also provided. The chassis 1 has a first surface 1a on which a printed circuit board 2 is placed, and a second surface 1b that extends integrally and continuously from the end surface of the first surface 1a at a substantially right angle. It should be noted that each drawing is sufficiently enlarged.

The support device according to the present invention is provided with a holder member 3, and the holder member 3 can be made of, for example, an ABS synthetic resin material. As will be clear from what will be described later, this is to make the entire holder member 3 an insulating member and to provide it with a slight amount of elasticity.

As shown in FIGS. 3 and 4, this holder member 3 has a chassis locking portion 5 and a position regulating portion for the printed circuit board 2 on one surface (lower surface) 4a of a substantially rectangular plane portion 4. It is constructed by providing a printed circuit board locking part 6 for performing this and an elastic fixing engagement part 7 for fixing the holder member 4 to the chassis 1.

That is, a pair of chassis locking projections 5a and 5b are provided as the chassis locking portion 5, and a pair of printed circuit board locking projections 6a and 6b are provided as the printed circuit board locking portion 6. In the illustrated example, these protrusions are formed at both ends of the plane portion 4 in the longitudinal direction (upper and lower in FIGS. 3 and 4), that is, they are formed at two locations. As is clear, the chassis locking protrusions 5a and 5b are connected to each other by a continuous portion 5c at their outer ends, and are formed in a U-shape as a whole. Of the protrusions 6a and 6b, the case where the protrusion 6b is formed continuously with the chassis locking protrusion 5a is shown.

Furthermore, the fixed engagement portion 7
A locking piece 8 is integrally formed to extend downward, and a locking portion 9 is integrally formed at the lower end of the locking piece 8. This locking portion 9 is configured by providing an inclined surface 9a that slopes from the lower end toward the lower surface of the flat portion 4, and a locking surface 9b that is continuous from the sloped surface 9a. In this case, the locking surface 9b is the flat part 4
is placed almost parallel to the Note that 10 is a through hole for die cutting.

On the other hand, the chassis 1 is provided with a locked window hole 11 that engages with the locking surface 9b of the fixed engagement portion 7, as shown in FIGS. 1 and 2.

Further, the first surface 1a of the chassis 1 forms a pair of protrusions 12a and 12b in a part thereof, and the lower edge of the printed circuit board 2 is positioned between the pair of protrusions 12a and 12b. There is.

According to the present invention described above, after inserting and positioning the lower end of the printed circuit board 2 between the protruding parts 12a and 12b of the chassis 1, the upper end and the
By engaging and pressing the chassis locking portion 5 formed on the holder member 3 and the printed circuit board locking portion 6, respectively, on the upper end, the locking portion formed on the fixed engagement portion 7 of the holder member 3 is released. The stop portion 9 engages with the window hole 11 of the chassis 1 due to its elastic force, and the holder member 3 can be fixed to the chassis 1.
With this fixation, chassis 1 and printed circuit board 2
As shown in FIG. 2, the holder member 3 cannot be removed from the chassis 1 even if the holder member 3 is simply lifted in this state. Therefore, the printed circuit board 2 is securely and firmly fixed to the chassis 1 by the holder member 3. Further, the lower and upper edges of the printed circuit board 2 are sandwiched and locked between the protruding portions 12a and 12b on the chassis 1 and the printed circuit board locking portion 6 of the holder member 3, and the bent upper end of the chassis 1 is then locked. Edge or second surface 1b
Since the upper end edge is locked by the chassis locking part 5 of the holder member 3, the chassis 1 and the printed circuit board 2 perform a positioning action of the holder member 3 with respect to the chassis 1, and the horizontal direction to the printed circuit board 2. We are trying to eliminate the burden on
Incidentally, the distance between the printed circuit board 2 and the chassis 1 can be selected depending on the thickness of the protrusions 5a and 6b.

Also, when the lower end of the locking piece 8 is biased to the right in FIG.
can be released from engagement with the window hole 11,
Therefore, the holder member 3 can be removed from the chassis 1 relatively easily, that is, the printed circuit board 2 can be removed from the chassis 1.

According to the present invention described above, the printed circuit board 2 can be reliably and firmly attached to the chassis 1 using the holder member 3 in a so-called one-touch manner. Installation can be done in an extremely short time and does not require any jigs.
It has features such as no unnecessary load is applied to the printed circuit board when it is fixed. Furthermore, the printed circuit board 2 can be removed relatively easily.

In this example, the chassis locking part 5 is formed in a U-shape, as is clear from FIGS. 3 and 4, while the chassis 1 has an upper end, as is clear from FIG. A part of it is made to protrude to form a protrusion 1c,
By fitting this directly between the pair of chassis locking portions 5, the holder member 3 is positioned in the left-right direction (in FIG. 1).
This positioning can also be achieved by causing the protrusion 1c of the chassis 1 to protrude into the die-cutting hole 10 of the holder member 3. In addition, a similar configuration may be adopted on the printed circuit board 2 side.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an example of the support device according to the present invention, Fig. 2 is a cross-sectional view taken along line A-A, Fig. 3 is a cross-sectional view taken along line B-B in Fig. 2, and Fig. 4 is a cross-sectional view taken along line A-A of Fig. 2. FIG. 2 is a sectional view taken along line CC in FIG. 2 with the chassis and printed circuit board removed. 1 is a chassis, 2 is a printed circuit board, 3 is a holder member, 5 is a chassis locking portion, and 6 is a printed circuit board locking portion.

Claims (1)

[Claims for Utility Model Registration] A first surface provided with a pair of protrusions for positioning and regulating one end of a printed circuit board; a substantially L-shaped chassis having a second surface provided with a window hole for locking at a predetermined position; and a pair of printed circuit boards for locking the other end of the printed circuit board. a holder member having a locking portion and a pair of chassis locking portions that lock ends of the second surface of the chassis, the printed circuit board locking portion and the chassis locking portion of the holder member; Elasticity for fixing the holder member to the chassis by inserting and engaging into the locked window hole of the chassis with the respective ends of the printed circuit board and the chassis being locked by the stop portions. A support device for a printed circuit board, in which a fixed engagement portion is provided integrally with the holder member.