JPS6027192A - Electronic device housing - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is used in 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 together with screws or the like. It is related to the housing.

Conventional configurations and their problems In general, small electronic devices use resin for the housing frame in order to be lightweight and have multiple functions, and 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, panel section 1. Printed circuit board 2
．． Battery holder 3. An electronic device unit consisting of a side plate 4 is inserted into the housing frame 5, and is fixed to the printed circuit board 2 with a set screw 6 inserted into a hole provided in the bottom of the housing frame 5. It is engaged with the plate 4 to fix the electronic device part and the housing frame 5.

In FIG. 2, a hole through which a set screw 6 is inserted is provided in the side surface of the housing, and the electronic device part and the sieve frame are stopped from bleeding in the same manner as in the above example.

In the two cases described above, the set screw is exposed to the outside of the housing frame and is connected 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 or the like 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 that prevents the influence of static electricity from being transmitted inside the device, and that allows the housing frame and the electronic device section to be easily separated for maintenance and adjustment. It is intended to provide a housing.

Structure of the Invention In order to achieve the above-mentioned object, the present invention provides an engaging part 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 is partially covered so that the engaging part is not exposed to the outside of the housing frame.

DESCRIPTION OF EMBODIMENTS The configuration of an embodiment of the present invention will be described in detail below with reference to the drawings. As shown in FIGS. 3 and 4, the electronic device housing 21 includes a housing frame portion 22 that houses an internal circuit and a battery and forms an outer periphery, a housing panel portion 23, and a housing cover portion 24. It is well structured. The housing panel section 23 is
The printed circuit board 25 and the operating section 39 to which a volume control or switch is attached are integrally formed by screws, bottles, etc., and the printed circuit board 26 and the battery holder part 2 are integrated.
6 is a nut plate 27 having a screw hole 38 and a battery terminal 28;
．． It is fixed via 29. This battery holder 26
An engaging step 30 and a hole 31 are formed near the center, and a groove 33 is provided between the engaging step 30 and the convex portion 32 so that it can be engaged with the nut plate 27. This NAND board 27 is fixed to the printed circuit board 26 by soldering.

Furthermore, the housing frame portion 22 is provided with an engagement protrusion 34 at a position that engages with the engagement step portion 3o of the battery holder portion 26.
This engagement protrusion 34 is provided with a hole 35, and this hole 3ey (IC) has a structure in which a set screw 36 is inserted and the set screw 36 does not fall out when removed.
This housing frame portion 22 has a cutout portion 37 cut out along the battery holder portion 26, and the cutout portion 37 and the battery holder 26 form a battery accommodating portion.
At 7, a part 24 of the housing cover can be attached and detached via a groove or the like (not shown).

Note that the step portion 3o and the projection 34 form an engaging portion, and the hole portion 3 provided in the nut plate 27 and the retaining portion, respectively.
1.35, the screw hole 38 and the set screw 36 constitute a screwing means. 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 3o of the battery holder part 26 and the engaging protrusion 34 of the housing frame portion 22 are engaged, and the set screw 36 and the nut plate 27 are engaged with the engaging step portion 3o of the housing frame portion 22. Protrusion 34 and battery holder part 2
6 engagement step portions 30 are simultaneously held, and the nand plate 27
The printed circuit board 25 fixed by soldering and the housing panel section 23 integrally formed with the printed circuit board 25 are securely fixed to the housing frame section 22. Next, the housing cover portion 24 is engaged with the notch 37 of the housing frame portion 22, thereby forming an electronic device housing in which the housing frame portion 22, the housing cover 24, and the housing panel 23 are integrated. be done. When the housing frame portion 22 and the printed board portion 25 are to be separated, the housing cover portion 24 is removed and the setscrew 26 is released from the nut plate 27 to separate them.

Effects of the Invention As is clear from the above explanation, according to the present invention, the cylindrical frame portion and the printed circuit board are sandwiched between the casing and the retaining portion of the battery holder using screws and nut plates, and the printed circuit board and the printed circuit board are held together. Since the casing frame is fixed, it can be easily separated and assembled, and the set screw provided in the retaining part is not exposed to the outside of the casing frame due to a part of the casing cover. Therefore, the electronic device can be used safely without any adverse effects on the electronic circuits inside the electronic 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 the drawing]

Figures 1 and 2 are exploded perspective views of conventional electronic device housings;
FIG. 3 is an exploded perspective view of an electronic device casing according to an embodiment of the present invention, and FIG. 4 is a sectional view of the casing in an assembled state. 22... Housing frame, 24... Housing cover, 26... Printed circuit board, 26...
・Battery holder, 2nd place... Nut board, 3o...
...Stepped portion, 33...Groove, 34...
Projection, 36... Set screw, 37... Notch, 39... Operation section.

Claims (1)

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