JPH07249878A - Decorative body fixing device for electronic apparatus - Google Patents

Abstract

PURPOSE:To confirm by visually observing whether a decorative body is effectively uneven-engaged with a housing or not out of the housing. CONSTITUTION:An engaging protrusion 38 and an opening 39 disposed forward of the protrusion 38 are formed at a bottom wall 37 of a lower chassis 31a to become part of a housing. When a mounting piece 25 formed integrally with a decorative body 21 is inserted along an inner surface of the wall 37, an engaging hole 25b formed at the piece 25 is uneven-engaged with the protrusion 38, and the element 21 is engaged fixedly with the chassis 31a. A front end 25c of the piece 25 is visually observed through the opening 39 from a direction B of an outer part of the housing thereby to confirm whether the hole 25b is effectively uneven-engaged with the protrusion 38 or not. A tool is inserted into the opening 39 from the direction B, thereby disengaging the uneven-engaging from outside the housing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a casing of an electronic device such as an on-vehicle audio device to which a decorative body called a nose portion is attached, and more particularly, to a fitting between the cosmetic body and the casing. The present invention relates to a cosmetic body fixing device for an electronic device, which enables the wearing state to be confirmed from the outside.

[0002]

2. Description of the Related Art FIGS. 9 and 10 are bottom views showing a state in which a housing of a conventional on-vehicle audio equipment and a cosmetic body are fitted to each other, as viewed from the bottom side of the housing, and FIG. It is an expanded sectional view of a line. Reference numeral 11 is a housing of the on-vehicle audio equipment, which is usually a metal chassis. The housing 11 is embedded in the console panel of the automobile. The decorative body 1 is fitted and attached to the front surface 11 a of the housing 11. This cosmetic body 1 is called a nose portion, and various operation buttons and a display device such as a liquid crystal panel are arranged on an operation surface 1a on the front surface thereof. Moreover, in the case where the cassette tape drive mechanism and the disk drive mechanism are built in the housing 1,
An insertion opening for inserting a recording medium such as a cassette tape or a disc is formed in the decorative body 1. At the edge of the rear surface 1b of the decorative body 1, resin mounting pieces 2 and 2 are integrally formed so as to project. The mounting pieces 2 and 2 have square fitting holes 2a and 2a.
a is formed so as to penetrate therethrough. In addition, lateral end portions 3 and 3 which are fitted to the outside of the left and right side surfaces 11c of the casing 11 are integrally formed at the left and right ends of the decorative body 1 in the figure.

A bottom wall portion 11b and a front surface 11a of the casing 11
Guide holes 12, 12 are formed so as to penetrate at the bending boundary portion between and. Fitting protrusions 13 and 13 that are cut and raised from the bottom wall portion 11b and are bulged inward of the casing are provided inward of the casing with respect to the guide holes 12 and 12. The decorative body 1 is attached to the front surface 11a of the housing 11 from the A direction. At this time, the mounting pieces 2 and 2 are inserted into the inner surface of the bottom wall portion 11b of the housing 11 through the guide holes 12 and 12,
As shown in FIG. 5, the fitting projections 13 and 13 that are formed on the bottom wall portion 11b and the fitting holes 2a and 2a of the mounting pieces 2 and 2 are fitted in a concavo-convex shape. Further, the side hooks 3 and 3 formed integrally on both the left and right sides of the cosmetic body 1 are provided on the left and right side surfaces 11c of the housing 11.
It is fitted on the outer surface of 11c.

[0004]

In the case 11 having the above structure, when the bottom wall portion 11b is viewed from the bottom surface direction (direction B in FIG. 11), the mounting piece 2 cannot be directly viewed.
Although a hole 11d is formed in the bottom wall portion 11b of the housing 11, the hole 11d is formed from the bottom wall portion 11b to the fitting projection 1
For cutting and raising 3 inside the housing,
The inside of the hole 11d is covered with the fitting protrusion 13. Therefore, the fitting state of the attachment piece 2 of the decorative body 1 cannot be visually observed from the B direction. When there is a dimensional error in molding the fitting hole 2a of the mounting piece 2 or a dimensional error in the fitting projection 13 due to distortion during bending of the metal casing 11, as shown in FIG. For example, the bottom wall portion 11b
There is a case in which the fitting projection 13 and the fitting hole 2a are not accurately fitted to each other due to floating (gap) δ between the inner surface of the fitting 2 and the mounting piece 2. In the above-mentioned conventional example, since the fitting failure cannot be confirmed only by looking at the housing 11 from the B direction, the fitting operation is continued to the next assembling step until the assembly is completed or after the assembly is completed. In some cases, no defect is found.

Further, during the assembling work, the decorative body 1 is attached to the housing 11
In some cases, it may be necessary to remove the makeup body 1 from the housing 11 even during maintenance work after mounting on the automobile. This is because, for example, when a defective fitting between the mounting piece 2 and the bottom wall portion 11b is found in the middle of the assembly work, or during the assembly work or the maintenance work, the internal circuit of the cosmetic body 1 is inspected and the casing is Front 11 of body 11
This is necessary, for example, when it is necessary to inspect the mechanism provided inside a and the circuit board. When removing the decorative body 1 from the housing 11, it is necessary to elastically deform the attachment piece 2 in the direction indicated by C in FIG. However, as shown in FIG. 11, the bottom wall portion 1 of the housing 11 is
Since 1b is closed, it is not possible to insert the tool from the B direction to deform the mounting piece 2 in the C direction. In the state where the on-vehicle audio equipment is completed as a product, various mechanisms, circuit boards, etc. are densely housed in the housing 11, so a tool is inserted between the mounting piece 2 and the bottom wall portion 11b. Therefore, the other parts have to be disassembled for the purpose of only removing the makeup body 1 and the casing 1, and the work is inefficient.

The present invention is to solve the above-mentioned conventional problems. When the decorative body is fitted into the housing, it is determined whether the mounting piece and the wall are securely fitted into the housing. The purpose is to enable direct visual confirmation from the outside so that defective fitting of the cosmetic body can be immediately found.

Another object of the present invention is to make it possible to easily remove the decorative body from the housing in the manufacturing process or maintenance work.

[0008]

A decorative body fixing device according to the present invention is an electronic device in which a resin-made decorative body is fitted in a housing, and the decorative body extends to an inner surface of a wall portion of the housing. The mounting piece is integrally formed, and an uneven fitting portion is formed between the mounting piece and the wall portion of the housing. On the wall portion of the housing, the mounting piece can be viewed from the outside of the wall portion. It is characterized in that an opening is formed.

Further, as the concave-convex fitting portion, in the case where a fitting projection protruding to the inside of the wall portion is formed in the wall portion of the housing and a fitting hole is formed in the attachment piece of the cosmetic body, It is preferable to form an opening in the wall, through which the front end of the fitting piece can be seen.

[0010]

In the above means, for example, the mounting piece extending vertically to the rear surface of the makeup body is inserted into the inside of the wall portion of the housing, and the mounting piece and the wall portion are fitted in a concavo-convex manner. The body is fitted and fixed in the housing. The wall portion of the housing is formed with an opening through which the mounting piece can be viewed directly from the outside of the wall when the fitting is fitted. Therefore, by looking at this opening, it is possible to confirm whether or not the mounting piece and the wall are securely fitted into each other by projections and depressions. Due to the dimensional error of the mounting piece, the distortion of the wall portion, etc., the mounting piece floats from the inner surface of the wall portion when the concave-convex fitting is not ensured. This floating can be recognized by looking at the attachment piece from the opening, and the defective fitting between the decorative body and the housing can be found. Therefore, it is possible to immediately re-assemble or replace the cosmetic body or the casing.

Further, in the case where a fitting protrusion protruding to the inside of the wall of the housing is provided and a fitting hole is formed in the mounting piece, the mounting piece is mounted along the inner surface of the wall when the cosmetic body is mounted. Then, the front end of the mounting piece once rides on the fitting protrusion of the wall, and then the fitting protrusion and the fitting hole are fitted into each other. When this concave-convex fitting becomes defective, the most floating portion from the inner surface of the wall portion is the front end portion of the mounting piece. Therefore, if an opening is formed in the wall at a position where the front end portion of the mounting piece can be viewed, the front end portion of the mounting piece can be viewed from the outside of the housing. Become. By visually observing the front end portion of the mounting piece that is most lifted up when the uneven fitting failure occurs, it becomes easy to find the uneven fitting failure.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing a device for fixing a cosmetic body to a housing in an in-vehicle audio device as an example of an electronic device, and FIGS. 2 and 3 are bottom views seen from the direction II in FIG. 2 shows just before the makeup is fitted, and FIG. 3 shows after the fitting. 5 is a cross-sectional view taken along the line VV of FIG. 3, an enlarged cross-sectional view showing the bottom wall portion of the housing facing upward, and FIG. 4 is a plan view of FIG. In this on-vehicle audio equipment, a housing 30 is embedded in a console panel of an automobile, and a decorative body 21 is fitted to the front surface of the housing 30, that is, the front side plate 32. Cosmetic body 21 is usually called a nose part. The exterior of the decorative body 21 includes a front panel 22 and a rear panel 23. Both panels 22 and 23 are injection molded from a resin material. The front panel 22 and the rear panel 23 are combined with each other and fixed by a fixing means such as screwing or concave and convex fitting. Front panel 2
The front surface of 2 is an operation surface 22a.
Various operation buttons and display are arranged. Also both panels 2
A circuit board is housed inside 2 and 23, and a switch element operated by the operation button, a liquid crystal panel appearing in the display unit, and the like are mounted on the circuit board.

The cosmetic body 21 is formed with an insertion opening 27 penetrating in the front-back direction. A cassette tape as a recording medium is a cassette tape in the housing 30 from the front of the front panel 22 through the insertion opening 27. It is loaded into the drive mechanism. Further, a connector terminal projecting hole 28 is formed in the lower rear portion of the rear panel 23. A connector is mounted on the circuit board in the decorative body 21, and the connector terminal has a protruding hole 2
Appear from 8. A plug to be fitted to the connector is provided on the housing 30 side, and when the decorative body 21 is attached to the housing 30, the connector and the plug are fitted to each other, and the circuit board in the decorative body 21 and the housing 30. The internal circuit board is electrically connected. At the lower end of the rear panel 23, a pair of mounting pieces 25, 25 that vertically project from the rear surface 23a are integrally formed. The mounting pieces 25, 25 are formed into a plate piece by a resin material integrated with the rear panel 23, and can be elastically deformed in the direction indicated by C in FIGS. 1 and 5. However, mounting piece 2
The rear panel 23 is provided on the upper surface (lower surface in FIG. 5) of 5, 25.
Reinforcing ribs 25a, 25a continuous with the rear surface 23a are integrally formed. By providing the reinforcing rib 25a, the rigidity of the mounting piece 25 is reinforced, and the mounting piece 2
The amount of elastic deformation of 5 in the C direction is suppressed, and the attachment piece 25 is prevented from being damaged by the deformation in the C direction.

Each mounting piece 25 has a square fitting hole 25b.
Are formed so as to penetrate therethrough. Further, an inclined surface 25d is provided at the lower surface tip (upper surface tip in FIG. 5) of the front end portion 25c which is the front end portion of the fitting piece 25 with respect to the fitting hole 25b. On the left and right sides of the rear panel 23, the rear surface 23
Side engaging portions 24, 24 that vertically project from a are integrally formed, and two engaging holes 24a, 24a are formed through the side engaging portions 24, 24, respectively. .
Further, at the upper end of the rear panel 23, upper hook portions 26, 26, 26 projecting vertically from the rear surface 23a are formed so as to project at three places, and the upper hook portions 26, 26, 26 are provided on the respective upper surfaces thereof. The latching protrusions 26a, 26a, 26a are integrally formed.

The housing 30 is composed of a lower chassis 31a and an upper chassis 31b. That is, the lower chassis 31a and the upper chassis 31b are a part of the housing 30. Both chassis 31a and 31b are formed by bending a metal plate. In FIG. 1, only the lower chassis 31a is shown in detail by a solid line, and the upper chassis 31a is shown in detail.
b is indicated by a chain line. A notch 32a is formed in the front side plate 32 that is bent and formed on the front surface of the lower chassis 31a. The notch 32a is formed at a position corresponding to the insertion port 27 of the decorative body 21 and the projecting hole 28 of the connector terminal. Further, bent pieces 32b, 32b are formed by bending on the upper surfaces of the left and right side plate portions of the front side plate 32. Guide holes 36, 36 are formed in the shape of an elongated hole at the folding boundary between the bottom wall portion 37 of the lower chassis 31a and the front side plate 32. A pair of fitting protrusions 38, 38 is provided on the inner side of the guide holes 36, 36 of the bottom wall 37.
Each fitting protrusion 38 has a bottom wall 37 formed of a metal plate.
A part of the above is cut and raised, and a protrusion is formed inward of the housing 30. As shown in FIG. 5, the fitting protrusion 38 is a plate piece having a base end 38c on the front plate 32 side. The fitting protrusion 38 is a fitting part 38b in which the front plate 32 side is tilted toward the inside of the housing 30, and the front end thereof is substantially parallel to the bottom wall part 37.

Fitting hole 25b formed in the mounting piece 25
And the fitting protrusions 38 formed on the bottom wall portion 37 are fitted to each other, and the fitting hole 25b and the fitting protrusions 38 form an uneven fitting portion. The bottom wall 37 is formed with openings 39 and 39 which are continuous with the cut-and-raised holes 34 formed to cut and raise the fitting protrusions 38 and 38. The opening 39 is a long hole that penetrates the bottom wall 37 and extends in the left-right direction (X direction in FIG. 1). As shown in FIG. 4, the opening width L1 of the opening 39 is
The width is larger than the width L2 of the fitting projection 38,
5 is slightly smaller than the width dimension L3. Also, on the left and right side walls 40, 40 of the lower chassis 31a,
The latching protrusions 40a, 40a are formed by cutting and raising outwardly at two places each.

Next, the operation of fixing the decorative body 21 to the housing 30 will be described. In the assembling work, the decorative body 21 is first fitted to the lower chassis 31a. As shown in FIG. 2, the decorative body 21 is inserted into the lower chassis 31 from the direction A until it hits the front side plate 32. At this time, the mounting pieces 25, 25 provided at the lower end of the rear surface 23a of the rear panel 23 of the decorative body 21 are inserted along the inner surface of the bottom wall portion 37 through the inside of the guide holes 36, 36. In addition, the makeup body 21
The left and right upper hooking portions 26, 26 formed on the upper end of the rear panel 23 are provided with bent pieces 32 at the upper end of the front plate 32.
b, 32b, the left and right side hooking portions 24,
24 is hooked on the outer surfaces of the left and right side walls 40, 40. Then, the engaging holes 24a, 24a formed in the side engaging parts 24, 24 are fitted into the engaging protrusions 40a, 40a respectively formed on the left and right side walls 40, 40 in a concave-convex manner without a gap, and attached. Fitting holes 25b, 25 formed in the pieces 25, 25
b fits into the fitting protrusions 38, 38 of the bottom wall portion 37 without a gap. As a result, the makeup body 21 moves to the lower chassis 31a.
With respect to the vertical and horizontal directions (X direction and Y direction in FIG. 1), the positioning is performed.

Here, the attachment piece 2 formed on the decorative body 21.
When 5 was inserted along the inner surface of the bottom wall portion 37 through the guide hole 36, an inclined surface 25d located in front of the fitting hole 25b of the mounting piece 25 was formed in the bottom wall portion 37. The mounting piece 25 elastically deforms in the C direction due to the fitting force of the decorative body 21 in the A direction upon hitting the inclined portion 38a of the hooking protrusion 38,
The front end portion 25c of the mounting piece 25 rides on the fitting protrusion 38. Then, when the fitting protrusion 38 and the fitting hole 25b are completely fitted in the concavo-convex shape, the front end portion 25c of the mounting piece 25 becomes the bottom wall portion 3.
It comes into close contact with 7. At this time, the front end portion 25c of the attachment piece 25 can be viewed through the opening 39 from the bottom surface direction (direction B in FIG. 5) of the lower chassis 31a. If the fitting protrusion 38 and the fitting hole 25b are not securely fitted into each other by projections and depressions, the front end portion 25c remains deformed in the C direction, and the front end portion of the mounting piece 25, as indicated by the broken line in FIG. A float (gap) as shown by δ occurs between 25c and the inner surface of the bottom wall portion 37. Therefore, it is possible to know whether or not the fitting protrusion 38 and the fitting hole 25b are securely fitted into each other by checking whether or not this floating occurs through the opening 39.

When the concave and convex fitting is not securely performed, the amount of floating inward from the bottom wall portion 37 is determined by the mounting piece 2
5 is the largest at the front end portion 25c, which is the tip of the No. 5, that is, at the front end portion 25c, which is the tip portion of the fitting hole 25b.
In this embodiment, the opening 39 is formed at a position where the front end portion 25c can be seen, and the front end portion 25c where the largest floating is likely to occur can be seen through the opening portion 39. It will be easier to find out whether it has been done or not. In order to make it easier to confirm the state of the front end portion 25c of the attachment piece 25 through the opening 39, it is preferable that the opening width L1 of the opening 39 shown in FIG. 4 is larger than the width dimension L2 of the fitting projection 38. preferable. The opening width L1 may be larger than the width dimension L3 of the mounting piece 25, but for the purpose of visually observing the state of the front end portion 25c, the opening width L1.
Is preferably L2 or more and less than L3.

Further, when the decorative body 21 is mounted on the lower chassis 31a, the side engaging portions 24 are elastically deformed to the outside, and the engaging protrusions 40a, 4 formed on the both side walls 40, 40.
0a, and after that, the engaging hole 24a formed in the side engaging part 24 and the engaging projection 40a are fitted into each other without a gap. Since the side engaging portion 24 has the engaging hole 24a formed therethrough, as shown in FIG. 6, whether the engaging hole 24a and the engaging protrusion 40a are securely engaged with each other by projection or recess. Can be confirmed through the hook holes 24a. Therefore, the concavo-convex fitting portion between the side retaining portion 24 and the left and right side walls 40 can be visually confirmed from the outside. After the decorative body 21 is fitted on the front surface of the lower chassis 31a as described above,
The upper chassis 31b is placed over the lower chassis 31a, and the upper chassis 31b and the lower chassis 31a are fixed by means such as screwing to complete the housing 30.
At this time, the hooking protrusions 26a, 26a, 26a formed on the upper hooking portions 26, 26, 26 of the cosmetic body 21 are fitted into the holes formed on the upper chassis 31b.

Further, the fitting at the concave-convex fitting portion consisting of the fitting hole 25b formed in the attachment piece 25 of the decorative body 21 and the hooking projection 38 of the lower chassis 31a is carried out in the bottom surface direction of the lower chassis 31a ( It is possible to release from (B direction). By inserting a tool such as a screwdriver into the opening 39 from the direction B shown in FIG. 5 and pressing the front end 25c to deform the attachment piece 25 in the direction C, the concave-convex fitting can be released. In addition, the side hooks 24 are provided on the lower chassis 31a.
Since they are located on the outer surfaces of the left and right side walls 40, 40, if the side engaging portions 24, 24 are deformed outward with a tool or the like, the engaging holes 24a and the engaging protrusions 40a fit together. Can be released easily. Therefore, by releasing the respective concave and convex fittings from the outside of the housing, the decorative body 21 is moved to the lower chassis 3
It can be easily removed from 1a. At this time, it is better to remove the upper chassis 31b from the lower chassis 31a and leave the latching protrusion 26a of the upper latching part 26 in a free state. However, it is not necessary to remove the mechanism in the lower chassis 31a when releasing the concave-convex fitting between the mounting piece 25 and the bottom wall portion 37. Therefore, for maintenance work, etc.
1 can be easily removed.

7 and 8 show a second embodiment of the present invention. In this embodiment, a hooking projection 25e is formed on the side of the mounting piece 25 integrally formed with the decorative body 21 facing the bottom wall 27, and an inclined surface 25f is formed at the tip of the hooking projection 25e. Has been done. An opening 39 is formed in the bottom wall portion 37 of the lower chassis 31a. When the decorative body 21 is attached, the attachment piece 25 is elastically deformed in the C direction, and then the hooking protrusion 25e is fitted into the opening 39. At this time, by visually observing the opening 39 from the direction B, it can be confirmed whether or not the hooking protrusion 25e is securely fitted into the opening 39 by projections and depressions. Further, the engagement of the concave and convex portions can be released by pushing the hooking protrusion 25e from the B direction using a tool such as a screwdriver to elastically deform the mounting piece 25 in the C direction. In this embodiment, the engaging projection 25e and the opening 39 form a concave-convex fitting portion, but the opening 39 also functions as an opening for visually observing the mounting piece.

In the embodiment shown in FIG. 1 and the like, the operation body 22a is formed on the front surface of the decorative body 21, but the makeup body 21 is separate from the operation member having the operation surface. May be. For example, an operation member having an operation surface may be detachably provided on the front surface of the decorative body 21 fixed to the housing 30. Further, the electronic device may be a vehicle-mounted device other than an audio device such as a navigation system, or a home or office electronic device.

[0024]

As described above, according to the present invention, the concave and convex fitting between the decorative body and the casing is achieved by observing the mounting piece integrally formed with the decorative body through the opening formed in the wall of the casing. The defect can be detected from outside the housing. Therefore, it is possible to immediately re-assemble or replace the cosmetic body or the casing. Further, when removing the cosmetic body, by inserting a tool or the like through the opening and elastically deforming the mounting piece, the concave-convex fitting between the mounting piece and the wall can be removed from the outside of the housing. There is no need to disassemble other parts to release the connection.

According to the second aspect of the present invention, when the concave-convex fitting is defective, the front end portion, which is most lifted from the inner surface of the wall portion, can be visually observed from the opening, and the concave-convex fitting defect can be easily found.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a fixing device for a cosmetic body in an on-vehicle audio device as one embodiment of the present invention;

FIG. 2 is a bottom view seen from the direction II of FIG. 1, showing a state before the decorative body is attached to the housing,

FIG. 3 is a bottom view as seen from the direction II of FIG. 1, showing a state in which a decorative body is attached to the housing,

FIG. 4 is a partial plan view of the concave-convex fitting part viewed from the bottom side of the housing;

5 is an enlarged sectional view taken along line VV of FIG. 3,

FIG. 6 is a partial side view showing a state in which a cosmetic body is attached to a housing,

FIG. 7 shows a second embodiment of the present invention, and is a partial bottom view of the concave-convex fitting part seen from the bottom surface side,

FIG. 8 is a partially enlarged cross-sectional view showing a concave-convex fitting portion in the second embodiment,

FIG. 9 is a bottom view showing a state before the cosmetic body is fitted into the housing in the conventional vehicle-mounted audio device,

FIG. 10 is a bottom view showing a state in which a cosmetic body is fitted in a housing in a conventional vehicle-mounted audio device;

11 is an enlarged sectional view taken along line XI-XI of FIG.

[Explanation of symbols]

 21 Decorative Body 22 Front Panel 23 Rear Panel 24 Side Hooking Part 24a Hooking Hole 25 Mounting Piece 25b Fitting Hole 25c Front End Part 26 Upper Hooking Part 27 Insertion Port 30 Housing 31a Lower Chassis 31b Upper Chassis 32 Front Plate 37 Bottom Wall 38 Fitting Projection 39 Opening 40 Sidewall 40a Hooking Projection

Claims (2)

[Claims] 1. In an electronic device in which a resin-made decorative body is fitted in a housing, a mounting piece extending to an inner surface of a wall portion of the housing is integrally formed on the decorative body, and the mounting piece and the housing are integrally formed. An electronic device characterized in that a concave-convex fitting portion is formed between the wall of the body and an opening through which the mounting piece can be viewed from the outside of the wall is formed in the wall of the housing. Equipment cosmetic fixing device. 2. The wall portion of the housing is provided with a fitting protrusion protruding inside the wall portion, and the fitting piece of the decorative body is formed with a fitting hole.
2. The cosmetic body fixing device for an electronic device according to claim 1, wherein an opening through which a front end portion of the mounting piece can be viewed is formed in a wall portion of the housing.