JP2007299786A - Electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus in which a plurality of operation buttons mounted on a printed board can be positioned with high dimension accuracy for a button through-hole formed at an enclosure by only the simple attaching work of a substrate without requiring the manual positioning work of the substrate, when the printed board is attached to the enclosure in a state that the operation buttons mounted on the printed board protrude from the button through hole formed on the enclosure for housing the printed board to the outside of the enclosure. <P>SOLUTION: The electronic apparatus has a plurality of substrate positioning bosses 15 formed so as to protrude to the inside of the enclosure 10; a substrate attaching portion 13 formed on the enclosure 10, and used for attaching the printed board 30; a plurality of positioning portions 31 formed on the printed board 30 so as to correspond to the substrate positioning bosses 15, and positioning the printed board 30 to the enclosure 10 by being engaged with the substrate positioning bosses; and an attaching member S1 for attaching the printed board 30 to the substrate attaching portion 13. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  In the present invention, the plurality of operation buttons mounted on the printed circuit board are protruded to the outside of the housing from the button through holes provided in the housing for housing the printed circuit board. The present invention relates to an electronic device having an assembly structure to be attached to a housing.

  In an assembly structure in which a printed circuit board is attached to a housing in a state where operation buttons such as a plurality of operation switches mounted on the printed circuit board are projected from button through holes provided in the housing, the operability and appearance are In order to maintain the quality, it is necessary to locate the printed circuit board on which the operation buttons are mounted.

As an assembly structure for attaching the printed circuit board to the housing in a state in which the operation knob mounted on the printed circuit board is protruded from the button through hole provided in the housing, conventionally, a shelf portion and an inner surface of the upper case are provided. There has been an assembly structure in which a rib for mounting a board is provided, an operation panel is placed on the shelf, and the printed board is fixed to the shelf by sandwiching the rib.
JP-A-6-21668

  Conventionally, the above-described substrate positioning has been performed manually by the substrate positioning operation. This kind of substrate positioning operation is such that the position of the printed circuit board attached to the housing can be adjusted by a predetermined amount, for example, the diameter of the mounting hole provided in the substrate in a structure in which the substrate is screwed to the housing. When the board is screwed to the chassis, the board mounting position can be adjusted by a predetermined amount. After the board is positioned manually, the board is screwed to the chassis. It was.

  Therefore, in the past, it was necessary to manually position the substrate, and this operation required a lot of time and labor.

  The present invention has been made in view of the above circumstances, and a plurality of operation buttons mounted on a printed circuit board are protruded to the outside of the housing from button through holes provided in the housing for housing the printed circuit board. In an electronic device having an assembly structure in which the printed circuit board is attached to the housing in a state, a plurality of substrates mounted on the printed circuit board are not required to be manually positioned, and only a simple circuit board mounting operation is required. An object of the present invention is to provide an electronic device that can position an operation button with high dimensional accuracy as designed with respect to a button through-hole provided in the casing.

  In the present invention, the plurality of operation buttons mounted on the printed circuit board are projected from the button through hole provided in the housing for housing the printed circuit board to the outside of the housing. In an electronic device attached to a housing, a plurality of board positioning bosses provided protruding from the inside of the housing, a board mounting portion provided on the housing for mounting the printed circuit board, and the plurality of boards on the printed circuit board A plurality of positioning portions that are provided corresponding to the positioning bosses and that position the printed circuit board with respect to the housing by engaging with the substrate positioning bosses; and an attachment member that attaches the printed circuit board to the substrate mounting part. It is characterized by comprising.

  In the present invention, the plurality of operation buttons mounted on the printed circuit board are protruded to the outside of the housing from the button through holes provided in the housing for housing the printed circuit board. In an electronic device with an assembly structure that is mounted on a housing, a plurality of operation buttons mounted on the printed circuit board are provided on the housing without the need for manual positioning of the substrate and only a simple substrate mounting operation. It is possible to position the button through hole with high dimensional accuracy as designed.

Embodiments of the present invention will be described below with reference to the drawings.
A configuration of an electronic apparatus according to an embodiment of the present invention is shown in FIGS. FIG. 1 is a side sectional view showing an assembly structure, and FIG. 2 is a perspective view showing a housing structure.

  In this embodiment, a plurality of operation buttons 41, 41,... Mounted on the printed circuit board 30 are transferred from the button through holes 12, 12,. In an electronic device in which the printed circuit board 30 is attached to the housing 10 in a state where the printed circuit board 30 is projected to the outside, a plurality of substrate positioning bosses 15 and 15 provided to project inside the housing 10 and the housing Are mounted on the printed board 30 in correspondence with the plurality of board positioning bosses 15, 15, and are connected to the board positioning bosses 15, 15. In combination, a plurality of positioning portions 31 for positioning the printed circuit board 30 with respect to the housing 10 and an attachment for attaching the printed circuit board 30 to the substrate mounting portion 13. Characterized by comprising the only member S1.

  The board positioning boss 15 is provided integrally with the housing 10, and is an engaging part (convex shape) that engages with a support part (pedestal part) 15 a that supports the printed board 30 and a positioning part 31 of the printed board 30. Part) 15b.

  The substrate mounting portion 13 is provided integrally with a plate (metal plate) 20 provided separately from the housing 10 inside the housing 10 or integrally with the housing 10. It is a boss having a screw hole for fixing the printed circuit board 30 with a screw S1 constituting the mounting member. The positioning portion 31 is an engagement hole that is provided in the printed circuit board 30 and closely fits with the substrate positioning boss 15.

  In this embodiment, the structure which provided the said board | substrate attachment part 13 in the said plate 20 integrally is illustrated. As shown in FIG. 2, the plate 20 has the engagement portion 16 provided inside the housing 10 engaged with the engagement hole 23 provided in the plate 20 and positioned. It is fixed inside the body 10. As shown in FIG. 2, the substrate positioning boss 15 provided integrally with the housing 10 penetrates the through hole 22 provided in the plate 20 and protrudes in the substrate support direction. On the upper surface of the housing 10, an exterior panel 11 having through holes corresponding to the button through holes 12, 12,.

  In the housing structure shown in FIG. 2, the printed board 30 is attached to the board attaching portions (bosses) 13, 13,... With screws S1, S1,. The plurality of operation buttons 41, 41,... Mounted on the printed circuit board 30 pass through the button through holes 12, 12,. Fixed to.

  When the printed circuit board 30 is attached, the engaging portions (convex portions) 15b of the substrate positioning bosses 15 and 15 are engaged with the engaging holes 31 constituting the positioning portions provided on the printed circuit board 30. Thus, the positioning of the printed circuit board 30 with respect to the housing 10 is performed.

  With the positioning structure of the printed board 30 using the board positioning bosses 15, 15, the printed board 30 can be fixed to a predetermined mounting position inside the housing 10 without causing a positional shift.

  As a result, a plurality of operation buttons 41, 41,... Mounted on the printed circuit board 30 are provided on the housing 10 with only a simple substrate mounting operation without requiring manual positioning of the substrate. The button can be positioned with high dimensional accuracy as designed with respect to the button through holes 12, 12,.

  By this board positioning mechanism, the sides of the operation surfaces of the operation buttons 41, 41,... Mounted on the printed circuit board 30 are provided in the button through holes 12, 12,. On the other hand, the printed circuit board 30 can be fixed to the housing 10 at a constant interval, and smooth operability and appearance quality can be maintained with respect to the operation of the operation buttons 41, 41,.

  Further, in the structure provided with the substrate positioning bosses 15, 15, the printed circuit board 30 is pressed by a predetermined pressing force from the bottom surface side of the housing 10 using, for example, an elastic member, so that the printed circuit board 30 is the substrate. Since the support portion (pedestal portion) 15a provided on the positioning boss 15 is supported by receiving a predetermined pressing force, it is suitable for the pressing force of the operation buttons 41, 41,. .. Can be improved, the operability of the operation buttons 41, 41,... Can be further improved, and the printed circuit board 30 can be protected against excessive pressing force of the operation buttons 41, 41,. .

  In the above-described embodiment, the structure in which the metal plate 20 is interposed in the structure for mounting the printed circuit board to the housing is taken as an example. However, the substrate mounting portions (bosses) 13, 13, The present invention can also be applied to a structure in which. Further, the mounting structure of the printed circuit board to the housing is not limited to the screwing structure using the board mounting portion (boss) 13 but may be another mounting structure. Further, the shape and structure of the housing 10, the board positioning boss 15, and the operation buttons 41, 41,... Are not limited to the above-described embodiment. A device having another shape and structure as long as it is a device structure in which the printed circuit board is attached to the housing in a state of protruding from the button through-hole provided in the housing for housing the printed circuit board to the outside of the housing. The present invention can also be applied.

1 is a side sectional view showing a configuration of an electronic device according to an embodiment of the present invention. The perspective view which shows the housing structure of the electronic device which concerns on embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Housing | casing, 11 ... Panel, 12 ... Button through-hole, 13 ... Substrate attachment part (boss), 15 ... Substrate positioning boss, 15a ... Support part (base part), 15b ... Engagement part (convex part), DESCRIPTION OF SYMBOLS 16 ... Engagement part, 20 ... Plate (metal plate), 22 ... Through-hole, 23 ... Engagement hole, 30 ... Printed circuit board, 31 ... Engagement hole (positioning part), 41 ... Operation button, S1 ... Mounting member ( screw).

Claims (5)

A plurality of operation buttons mounted on the printed circuit board are attached to the housing in a state where a plurality of operation buttons protrude from the button through-hole provided in the housing for housing the printed circuit board to the outside of the housing. In electronic equipment,
A plurality of substrate positioning bosses protruding inside the housing;
A board mounting portion provided in the housing and for mounting the printed board;
A plurality of positioning portions provided on the printed board corresponding to the plurality of board positioning bosses, and positioning the printed circuit board with respect to the housing by engaging with the board positioning bosses;
An attachment member for attaching the printed board to the board attachment portion;
An electronic apparatus comprising:   The board positioning boss is provided integrally with the housing, and is provided with a support part for supporting the printed board and an engaging part for engaging with the positioning part of the printed board. The electronic device described.   The electronic device according to claim 1, wherein the board mounting portion is a boss provided integrally with the housing and having a screw hole for fixing the printed board with a screw.   The board mounting portion is a boss that is integrally provided on a plate provided separately from the casing inside the casing and has a screw hole for fixing the printed board with screws. The electronic device according to claim 1.   The electronic device according to claim 1, wherein the positioning portion is an engagement hole that is provided in the printed circuit board and is closely fitted to the substrate positioning boss.

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