JPH0221675B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is used for small portable electronic devices, etc., and has a structure in which a housing frame and a printed circuit board constituting an electric circuit are locked with screws or the like. It is related to the housing.

Conventional configurations and their problems Generally, in order to make small electronic equipment lightweight and multi-functional, resin is used for the housing frame, and in order to increase the packaging density of electronic components, electronic We are planning to convert the parts to LSI.

Moreover, the structure shown in FIGS. 1 and 2 is adopted so that the parts inside the apparatus can be easily maintained and adjusted. In FIG. 1, an electronic device section A consisting of a panel section 1, a printed circuit board 2, a battery holder 3, and a nut plate 4 is inserted into a housing frame 5, and inserted into a hole provided on the bottom of the housing frame 5. The set screws 6 are engaged with a nut plate 4 fixed to the printed circuit board 2, thereby fixing the electronic device section A and the housing frame 5.

In FIG. 2, a hole into which a set screw 6 is inserted is provided in the side surface of the housing, and the electronic device section A and the housing frame 5 are directly fixed in the same manner as in the above example.

In the two cases described above, the set screw is exposed outside the housing frame and is directly fixed to the nut plate fixed on the printed circuit board. Furthermore, metal setscrews are used to firmly secure the electronic device to the housing frame. Therefore, static electricity generated outside the device flows through the set screw onto the printed circuit board inside the device, causing malfunction or failure of the device. Furthermore, since the screws are external, there are disadvantages in terms of appearance and design.

Purpose of the Invention The present invention provides an electronic device housing that prevents the influence of static electricity from being transmitted inside the device, and that allows the housing frame and electronic device section to be easily separated for maintenance and adjustment. This is what we are trying to provide.

Composition of the Invention In order to achieve the above object, the present invention provides an engagement portion with a housing frame, for example, in a battery holder, etc., which is provided directly or indirectly on a printed circuit board provided inside an electronic device. The battery holder cover is configured to prevent the engaging portion from being exposed to the outside of the housing frame by a battery holder cover or the like.

DESCRIPTION OF EMBODIMENTS Hereinafter, the configuration of an embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 3 and 4, the electronic device casing 21 includes a casing frame portion 22 that accommodates a circuit and a battery therein and forms an outer periphery;
It is composed of a housing panel section 23 and a housing cover section 24. In the case panel section 23, a printed circuit board 25 and an operation section 39 to which a volume control, switch, etc. are attached are integrally constructed using screws, pins, etc., and the printed circuit board 25 and battery holder section 26 have screw holes 38. They are fixed via a nut plate 27 and battery terminals 28, 29. This battery holder 26 has an engagement step 3 near the center.
0 and a hole 31 are formed, and this engagement step 30
A groove 33 is provided between the nut plate 2 and the convex portion 32.
7 so that it can be locked. This nut board 27
is fixed to the printed circuit board 25 by soldering.
Furthermore, the housing frame section 22 includes a battery holder section 26.
An engagement protrusion 3 is located at a position where it engages with the engagement step 30 of the
4, this engagement protrusion 34 is provided with a hole 35, a set screw 36 is inserted into this hole 35, and the structure is such that the set screw 36 does not fall out. In addition, this housing frame part 2
2 has a notch 37 cut out along the battery holder part 26, the notch 37 and the battery holder 26 form a battery accommodating part, and the notch 37
The housing cover portion 24 can be attached and detached via a groove or the like (not shown).

Note that the stepped portion 30 and the protrusion 34 form an engaging portion, and the nut plate 27, the holes 31 and 35 provided in the engaging portion, the screw hole 38, and the set screw 36 constitute a screwing means. do. Further, 40 is a battery, and 41 is a part attached to the operating section 23, such as a switch.

In the above configuration, during assembly, the engaging step portion 30 in the battery holder portion 26 and the housing frame portion 2
The engagement protrusion 34 of No. 2 is engaged, and the set screw 3
6 and the nut plate 27 are connected to the engagement protrusion 34 of the housing frame section 22 and the engagement step section 30 of the battery holder section 26.
At the same time, the printed circuit board 25 and the printed circuit board 25 are held together and fixed by soldering to the nut plate 27, and the housing panel section 23, which is integrally formed with the printed circuit board 25, is reliably fixed to the housing frame section 22. Then, insert the housing cover part 2 into the notch 37 of the housing frame part 22.
4 is engaged, the housing frame portion 22,
The housing cover 24 and the housing panel portion 23 form an integrated electronic device housing. Housing frame part 2
2 and the printed board section 25, the housing cover section 24 is removed and the set screw 26 is released from the nut plate 27, thereby allowing the separation.

Effects of the Invention As is clear from the above description, according to the present invention, the housing frame portion and the printed circuit board are held between the housing frame portion and the printed circuit board using screws and nut plates, and the printed circuit board is Since the casing frame is fixed, it can be easily separated and assembled, and the casing cover part prevents the setscrews provided on the engagement part from being exposed to the outside of the casing frame. The electronic device can be used with peace of mind without adversely affecting the electronic circuit inside the device due to static electricity generated outside the device. Also, since the set screws are not exposed outside the housing, this is advantageous in terms of the housing appearance and design.

[Brief explanation of drawings]

1 and 2 are exploded perspective views of a conventional electronic device casing, FIG. 3 is an exploded perspective view of an electronic device casing according to an embodiment of the present invention, and FIG. 4 is an assembled state of the same casing. FIG. 22... Housing frame, 24... Housing cover,
25...Printed circuit board, 26...Battery holder,
27...nut plate, 30...step, 33...groove,
34...Protrusion, 36...Set screw, 37...Notch, 39...Operation unit.

Claims (1)

[Claims] 1. A housing frame portion forming the outer periphery of the electronic device, a notch portion provided in a part of the housing frame portion for accommodating a battery, a housing cover covering the notch portion, and an operating portion are fixed. A printed circuit board, a nut plate for fixing the circuit board to which the printed circuit board is fixed, and a groove into which the nut plate is inserted, and when inserted into the housing frame portion, comes into contact with the notch to form a battery storage section. a battery holder portion provided in a notch of the housing frame and formed between the battery holder; and an engaging portion formed by inserting the printed circuit board and battery holder into the external housing. and a nut plate inserted into the groove, which are screwed together and fixed together by a screwing means.