JPH06188576A - Mechanism for mounting electronic equipment - Google Patents

Abstract

PURPOSE:To contrive the simplification of mounting components and a mounting work. CONSTITUTION:Elastic engaging piece 105 mounted to a panel 101 with a board holding mechanism are made to penetrate a bus-board 102 to snap-fit the sub- board 102, which is mounted on a mother board 103 via connectors 110, into the panel 101 from the backside of the panel 101 and at the same time, the board 103 is inserted between a board holder 104 and the panel 101 and is fixed by the holder 104 and the panel 104 and the panel 101 is mounted on the holder 104.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cabinet device, a board mounting device, and an L unit used in, for example, an image display device.
(EN) Provided is a mechanism for mounting a light guide lens for an ED, the mounting work of which is simple and stable.

[0002]

2. Description of the Related Art FIG. 7 is a perspective view showing a cabinet device of a conventional image display device such as a CRT, in which a box front part (bezel) and a box rear part (back cover) are connected with screws or the like. It is to be installed without. In the figure, reference numeral 1 denotes a plastic cabinet, which is composed of a bezel 2 forming a front portion of a box body and a back cover 3 which is joined to the bezel 2 without using a joining member such as a screw. An opening 2a is formed on the rear side of the bezel 2 and an opening 3a is formed on the front side of the back cover 3. Further, as shown in FIG. 8, a plurality of engagement holes 2c penetrating in the up-down direction are formed in the edge portion 2b of the opening side upper end portion of the bezel 2, and the inside of the opening side upper end portion of the back cover 3 is formed. A plurality of downwardly projecting claws 3b are formed integrally with the back cover 3. Then, the opening 2a of the bezel 2 and the opening 3a of the back cover 3 are aligned with each other, and the tabs 3b of the back cover 3 are locked in the engaging holes 2c of the bezel 2 without using a connecting member such as a screw. The cabinet 1 can be assembled.

FIG. 9 is a perspective view showing a substrate holding and fixing method used in a conventional image display device and the like. In the figure, 102 is a sub-board, 103 is a mother board, 104 is a board holder, 110 is a board-to-board connector, and 114 is a board-to-board connector.
Is a holding plate for sub-board, 115 is a screw, and 116 is a fixed plate for mother board. Next, the operation will be explained.
The sub-board 102 is screwed into the holding metal plate 114 for the sub-board.
5, and board-to-board connector 110
Is connected to the mother board 103. Mother board 1
03 is attached to the substrate holder 104 and is fixed by a mother substrate holding metal plate 116 so as not to come off.

FIG. 10 is a perspective view showing a method of mounting a conventional LED light guide lens, and FIG. 11 is a sectional view of FIG. In the figure, 201 is L made of transparent resin.
ED light guide lens, 202 is a front mask for attaching the light guide lens 201, 203 is a square hole for a lens formed in the front mask 202, 204 is a lens mounting boss, 20
Reference numeral 5 is a mounting screw, 206 is an LED, 207 is a light receiving portion of a lens, and 208 is a light emitting portion. Next, the operation will be described. The light emitting portion 208 of the light guiding lens 201 is inserted into the lens square hole 203 formed in the front mask 202, and is fastened to the boss 204 with the screw 205. And L
The light from the LED 206 located behind the ED light guide lens 201 is received by the lens light receiving unit 207, and the front mask 202 is received.
The light is emitted from the lens light emitting portion 208 appearing on the surface of the.

[0005]

However, the conventional electronic device mounting mechanism has the following problems. (1) First, in the cabinet device shown in FIGS. 7 and 8, since the opening edge portion 2b of the bezel 2 is thin and the engagement hole 2c is formed as a through hole, the back cover 3
There was a problem that the bezel 2 and the back cover 3 are disengaged due to the weakening of the engaging force due to impact and plastic deformation when the tab 3b and the engaging hole 2c of the bezel 2 are attached and detached. (2) Further, since the conventional substrate holding mechanism is configured as shown in FIG. 9, the number of components increases as the number of substrates increases.
The work of installing the parts was complicated. Further, there is a problem in that a dedicated jig is required for the mounting work. (3) Also, the conventional LED light guide lens mounting mechanism is shown in FIG.
Also, since it is configured as shown in FIG. 11, it is necessary to use the screws 205 and the like, and it is necessary to manage the tightening torque. In addition, there is a problem that the work is complicated because a driver is used. Further, there is a problem that the front mask 202, which is a design part, is accidentally scratched with a tool such as a metal screwdriver.

The present invention has been made to solve the above problems, and provides a cabinet device in which the bezel and the back cover are not easily disengaged from each other. Another object of the present invention is to reduce the number of parts in the board holding mechanism, simplify the mounting work, and do not require a dedicated jig. Further, it is an object of the present invention to provide a mechanism for mounting a light guide lens, which simplifies the work and provides a mechanism for mounting without a mounting tool.

[0007]

In the cabinet device according to the present invention, an undercut-shaped padding portion is formed on the back surface of the engaging hole provided in one of the opening end portions of the box front portion or the box rear portion. The engaging hole is made a blind hole, and the engaging claw is provided on the other one of the front part of the box body and the rear part of the box body, and the box is formed by locking the engaging hole and the engaging claw. .

Also, in the board mounting device according to the present invention, the sub-board mounted on the mother board via the connector is snap-fitted from the rear side through the elastic engaging piece mounted on the panel with the board holding mechanism through the sub-board. At the same time, the mother substrate is sandwiched and fixed by the substrate holder and the panel, and the panel is attached to the substrate holder.

Further, the mounting mechanism of the LED light guide lens according to the present invention is such that the screws are eliminated and the resin is fixed by snap fitting.

[0010]

The cabinet device according to the present invention improves the mechanical strength of the engagement hole without damaging the appearance of the cabinet by forming the undercut blind hole by filling the back surface of the engagement hole. Increases reliability with a strong bond.

In the substrate holding and fixing method according to the present invention, the sub-board is held and the mother substrate is fixed by the panel 1 component with the substrate holding mechanism, and the panel body with the substrate holding mechanism is attached to the substrate holder with one touch. It is mounted, the number of parts is reduced, and the use of dedicated jigs is eliminated.

Since the mounting mechanism of the LED light guide lens in the present invention is fixed by the snap fit, the number of parts is reduced and the use of tools is eliminated.

[0013]

EXAMPLES Example 1. Embodiment 1 of the present invention will be described below with reference to FIG.
2 will be described. In FIG. 1, a plastic cabinet 1 has a box front (bezel) 2 and a box rear.
An opening 2a is formed on the rear side of the bezel 2 and an opening 3a is formed on the front side of the back cover 3. FIG. 2 is an enlarged cross-sectional view showing a main part of the engaging portion of FIG. 1, and the engaging hole 2c is formed in the edge portion 2b of the bezel 2.
A plurality of blind cover 2d, which are integrally molded with the bezel 2 and serve as undercut-shaped padded portions, are formed inside thereof. A plurality of downwardly projecting claws 3b are formed inside the upper end of the back cover 3 on the opening side.

In the cabinet device constructed as described above, the opening 2a of the bezel 2 and the opening 3a of the back cover 3 are aligned, and the tabs 3b of the back cover 3 are reinforced by the blind cover 2d of the bezel 2. By locking in the dowel hole 2c, the cabinet 1 can be easily mounted without using a joining member such as a screw, and the mechanical strength around the engaging hole is improved and a reliable and strong joining force can be obtained. .

Example 2. Next, a second embodiment of the present invention will be described with reference to FIGS. In FIG. 3, 101
Is a panel with a substrate holding mechanism, 102 is a sub-board, 103 is a mother board, 104 is a board holder, 105 is an elastic rod (snap) having an engaging piece 105a at its tip, 106 is a support for supporting the sub-board from the front, 107 Is a board fixing flange, 108 is a panel fixing flange, 109 is a snap square hole, 110 is a board-to-board connector, and 111 is a square hole for the panel flange 108. Further, in FIG. 4, reference numeral 112 denotes a spherical projection portion provided on the panel side with the substrate holding mechanism, and 113 denotes a guide round hole for the spherical projection portion 112 provided on the substrate holder 104 side.

Next, the operation of the second embodiment will be described. The mother board 103 and the sub-board 102 are connected by the board-to-board connector 110, mounted on the board holder 104, and then mounted on the board holding mechanism-equipped panel 101 by the operation described below. That is, first, the sub-board 102 is held by engaging the engaging piece 105 at the tip of the snap 105 into the snap square hole 109.
Insert a and hold from the rear side. Next, the mother board 103
For fixing, the panel 101 with the substrate holding mechanism is attached to the substrate holder 104 so that the end portion of the mother substrate 103 is sandwiched between the substrate fixing flange 107 and the substrate holder 104. Further, the panel holding mechanism-equipped panel 101 is attached by inserting the panel fixing flange 108 and the spherical projection 112 provided in the substrate-holding mechanism panel 107 into the square hole 111 and the round hole 113 provided in the substrate holder 104. And fix it. Regarding the holding of the sub-board 102,
By virtue of the pillars 106 and the snaps 105 provided on the panel 101 with a substrate holding mechanism, the sub-board 102 is sandwiched and fixed, thereby making it possible to prevent vibration of the sub-board 102.

Embodiment 3. A third embodiment of the present invention will be described with reference to FIGS. In FIG. 5, 201 is a light guide lens, 202 is a front mask, 203 is a rectangular hole for lenses formed in the front mask, 206 is an LED, 207 is a lens light receiving part, 208 is a lens light emitting part, and 209 is an LED from the front mask 202. A lens housing 210 projecting to the side, 210 a square hole for snapping provided in the lens housing 209, 211 a lens guide rail for guiding and supporting the light guide lens 201, and 212 a snap provided on the light guide lens 201 side. .

Next, the operation of the third embodiment will be described. The light guide lens 201 is provided with a snap 212 having an engaging piece 212a at the tip, and is inserted while sliding on the lens guide rail 211 at the lower end of the lens housing 209 provided on the front mask 202, and the lens light emitting unit 20 is provided.
8 is inserted into the lens square hole 203 of the front mask. Then, when it is inserted to the specified position, the engagement piece 212a of the snap 212 enters the snap square hole 210 provided in the lens housing 209 and does not retract. As a result, the light guide lens 201 is attached and fixed to the front mask 202. Further, according to the third embodiment, since the entire lens is surrounded by the lens housing 209 of the front mask, it is possible to prevent light from leaking.

In the third embodiment, the light guide lens 20 is used.
Although the one shown in FIG. 1 is provided with the snap 212, the snap may be provided on the housing 209 side and the engagement hole may be provided on the lens side.

[0020]

As described above, according to the present invention, the following effects are achieved. (1) By integrally forming an undercut blind cover portion on the back surface of the engaging portion of the cabinet device, the mechanical strength around the engaging hole is improved and a reliable and strong coupling force is obtained. (2) Since the plurality of substrates are held and fixed by using the snap-fit mechanism and the components integrally molded of the resin material, the number of components is reduced and the workability is improved. (3) Since screwing is abolished in the mounting mechanism of the light guide lens for LED and snap fit is used, there is an effect that the number of parts is reduced and workability is improved. Further, since the entire lens is covered with the housing, there is an effect that unnecessary light leaking from the lens can be blocked.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a cabinet device showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a coupled state of main parts of the engaging part of FIG.

FIG. 3 is a perspective view showing a panel with a substrate holding mechanism according to a second embodiment of the present invention.

FIG. 4 is a sectional side view of a panel with a substrate holding mechanism according to a second embodiment of the present invention.

FIG. 5 is a perspective view showing a lens mounting mechanism according to a third embodiment of the present invention.

6 is a cross-sectional view showing the lens mounting mechanism of FIG.

FIG. 7 is an exploded perspective view of a conventional cabinet device.

FIG. 8 is a cross-sectional view showing a coupled state of main parts of the engaging part of FIG.

FIG. 9 is a diagram showing conventional substrate holding.

FIG. 10 is a perspective view showing a conventional lens mounting mechanism.

FIG. 11 is a sectional view showing a conventional lens mounting mechanism.

[Explanation of symbols]

 1 Cabinet 2 Box Front (Bezel) 2a Opening 2b Opening Edge 2c Engagement Hole 2d Blind Cover 3 Box Rear (Back Cover) 3a Opening 3d Claw 101 Substrate Holding Mechanism Panel 102 Sub Board 103 Mother Board 104 Board holder 105 Elastic rod body (snap holder) 105a Engagement piece 106 Strut 107 Board fixing flange 108 Panel fixing flange 109 Snap square hole 110 Board-to-board connector 111 Square hole 112 Spherical projection 113 Round hole 201 Light guiding Lens 202 Front mask 203 Square hole for lens 206 LED 207 Lens light receiving section 208 Lens light emitting section 209 Lens housing 210 Square hole for snap 211 Lens guide rail 212 Snap

Claims (3)

[Claims] 1. A box body front part and a box body rear part are provided with an engaging hole in either one of the opening end parts, and the other one is provided with an engaging claw so that the opening parts of the box body front part and the box body rear part are connected to each other. In an attachment mechanism of an electronic device that forms a box by butting and engaging the engaging hole and the engaging claw, an undercut-shaped padding part is provided on the back surface of the engaging hole on the front part or the rear part of the box. An attachment mechanism for an electronic device, which is integrally formed and has a blind hole as an engaging hole. 2. A mounting mechanism for an electronic device comprising a mother board, a sub-board mounted on the mother board via a connector, a board holder for mounting the mother board, and a panel with a mechanism for holding the sub-board. , The elastic engagement piece mounted on the panel is supported from the rear side through the sub-board, the mother board is sandwiched and fixed by the board holder and the panel, and the panel is mounted on the board holder. mechanism. 3. A light guide lens for a display element, a front mask to which the light guide lens is attached, a housing for accommodating the light guide lens is provided on the front mask side, and the light guide lens and one of the housings are engaged. An attachment mechanism for an electronic device, wherein an elastic body having a piece is provided in the other with an engagement hole, and the engagement piece is fixed to the engagement hole by snap fitting.