JPS60800B2 - Housing structure of electronic equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic device with a built-in speaker, and in particular improves the structure of the shell to prevent the lid from becoming slick without using a cushioning material. Concerning the structure of a weight body in electronic equipment.

BACKGROUND OF THE INVENTION Conventionally, the structure of an electronic device with a built-in speaker, such as a car training radio, has been reduced to 2, as shown in FIG. 1, for example.

That is, the panel 4 on which the speaker 3 etc. are attached is fitted to the front end engaging portion 2 of the chassis 1 formed in a substantially U-shape, and the screw 6 is inserted.
and lids 6 and 7 that cover each opening on the upper and lower surfaces of the chassis 1 are attached using screws 8 and 9. However,
In such a structure, the sound pressure of the sound emitted from the speaker 3 may cause vibrations in the various members constituting the body. In this case, the chassis 1 and the panel 4 are heavy and made to be strong, so they are not affected by sound pressure so much, but the lids 6 and 7 are made of a relatively thin plate material such as sheet metal or resin. It is easily affected by sound pressure and often causes vibration. When vibration occurs in this way, generally the lid 6,
7 is attached to the chassis 1 and panel 4 in a few places, for example, in two places, in order to make it easy to attach and detach. A so-called bulge occurred at the contact portion, which was extremely undesirable as it caused a deterioration in sound quality. Therefore, in the past, as shown in FIGS. 2a and 2b, a cushioning member 10 such as a sponge or cloth material is inserted between the chassis or panel 4 and the lids 6, 7 to prevent the occurrence of bulges.

However, with this type of method, there are disadvantages in that the work of attaching the buffer member 10 is complicated and that the buffer member 10 is exposed to the outside after assembly, impairing its aesthetic appearance. The present invention has been made in view of the above circumstances, and its purpose is to improve the appearance and workability during assembly by improving the mounting structure of the chassis panel and lid, thereby eliminating the need for a buffer section. Our goal is to provide cliff-shaped electronic equipment that is easy to maintain and inexpensive.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 3 is an exploded perspective view showing the structure of the electronic device according to the same embodiment. In the figure, 11 is a chassis, 21 is a panel, and 31 and 41 are an upper lid and a lower lid, respectively. Note that the same parts as in FIG. 1 are given the same reference numerals and detailed explanations will be omitted. The chassis 11' is a main body 12 formed into a substantially U-shape, with engaging parts 2, 2 provided at both front ends thereof, and belt-shaped protrusions 13, 13 provided on both outer surfaces. 2 are provided with screw holes 2a, 2a for coupling with the panel 21, and screw holes 14 are provided in the center of the rear surface of the chassis body 12 for attaching the respective lids 31, 41.

Further, each lid body 31 is provided at the rear end of both sides of the chassis body 12.
;Protrusions 18, 18 are provided at the front ends of both sides of the chassis body 12 to control the positions of the shells 31, 41 by contacting the inner surfaces of the shells 31, 41 when the shells 31, 41 are attached. Correspondingly, first protrusions 15 are provided respectively.These first protrusions 15, 15 are formed by concentrically aligning a cylindrical body 15b on a conical base 15a, as shown in FIG. Further, at both ends of the rear surface of the chassis body 12, there are projecting turtles 6, 16 that protrude upward and downward of the chassis body 12.
Further, second protrusions 17, 17 are provided at the center of the rear surface of the chassis body 12 on both upper and lower sides of the screw hole 14.
is provided. These second protrusions are each rhomboid 3 turtle 9 4
1 is engaged with the through holes 32, 42 provided on the rear surface of each lid body 31, 41, and pushes both ends of the back surface of each lid body 31, 41 onto the protrusions 16, 16 of the chassis body 12. It is something to be brought into contact with. On the other hand, each of the lids 31 and 41 is formed by bending both sides and the rear end of a single plate, and the center of the front end has a concave surface formed by pressing or the like. Part 3
3? 34 are provided.

Further, notches 34 and 44 are provided in the front weave portions on both sides of each of the lids 31 and 41, respectively. These notches 34
, 44 are the chassis 11 when the lids 31, 41 are attached.
This is for engaging with the first protrusion 15 of. Also, in the center of the rear end surface of each lid body 31, 41, there are ribs 36, 4 having semicircular notches 35, 45 and through holes 32, 42.
6 is provided. These ribs 36, 46
1 and 41 to the chassis 11, it functions as a screw-fastening part. Further, the panel 21 is made of a box-shaped body with a rear face as a gate, and electrical components such as a speaker 3 are mounted inside the box-shaped body.

Ribs 229 22 are provided at the center of each of the upper and lower gate sides of the panel 21 . These ribs 22, 22
is a type that engages with the recesses 33, 43 of each lid body 31, 41 and presses the front end of each lid body 31, 41 against the protrusions 23, 23 of the panel 21 when each of the shells 31, 41 is attached. It is. Also, the through holes 24, 24 provided on the side surface of the panel 21 are t
Screw hole 2 of chassis engaging part 2 when coupled with chassis 11
This is for screwing the screw 5 into the hole a. Note that the chassis 1 and the panel 21 are manufactured by integral molding.

The above members are assembled as follows.

That is, first, the panel 2 is attached to the engaging portion 2 of the chassis 11.
1 and screw hole 2a of chassis 11 and panel 2.
After aligning the through holes 24 of 1 and 1, screw the screws 5 into the screw holes 2a through the through holes 24, and then connect the panel 21 and the chassis 1.
Combine with 1. In this state, wiring connections are made between the electronic circuit group (not shown) mounted on the chassis 11 and the speaker 3, etc., and then both the upper and lower lids 31, 41 are attached. That is, to attach each of the lids 31 and 41, first, insert the notch 34 of the lid 31 into the first protrusion 1 of the sorcerer 1.
5 as shown in FIG. 5, and the recess 33 of the lid 31 is engaged with the rib 22 of the panel 21 as shown in FIG. At the same time, the through hole 32 provided on the rear surface of the lid 31 is engaged with the second protrusion 17 of the chassis 11 as shown in FIG. 6, and ironing of the lid 31 is completed. Next, the lid 41 is placed on the lower surface side of the chassis 11 in the same way as the lid 31 is assembled. Thereafter, screws g are inserted into the screw holes 4 of the chassis 11 through the through holes formed by the notches 359 and 45 of each cover body 31, 41, and the installation work is completed. Therefore, in the assembled state, the front end of each lid body 31, 41 is connected to the rib 2 of the panel 21.
2, the central portion is deformed and pressed inward to the chassis 11 as shown in FIG.

Note that the broken line A in the figure shows the state before deformation. Therefore, the lids 31 and 41 are mechanically and extremely stably joined by the restoring force caused by the deformation and the pressing force against the protrusion 23, so that
During this time, the sound pressure of the speaker 3 does not cause any fluctuation. On the other hand, each side surface of the lids 31 and 41 has a notch 34
, 44 are engaged with the first protrusion 15 of the chassis 11, so that the inner surface is separated from the outer surface of the chassis 11 and expanded outward as shown in FIG. .

Therefore, the portions where the inner surfaces of the lids 31 and 41 come into contact with the chassis 11 are limited to the first protrusion 15 and the protrusion 18 at the rear end, and the other portions are securely maintained in a non-contact state. Ru. At the same time, since each side surface of the lid body 31, 41 is expanded outward, the restoring force causes the lid body 31, 41 to expand outward.
41 is strongly pressed against the first protrusion 15. As a result, the side surfaces of the lids 31 and 41 are no longer in contact with each other halfway, and bulging at those portions is almost completely prevented. Further, the rear surface portion of each lid body 31, 41 is
Due to the engagement between the through holes 32 and 42 of the first through hole and the second protrusions 17 and 17 of the chassis 1, the central part is forcibly curved inward of the chassis 11 as shown in FIG. state 2
becomes. Note that B in the figure shows the state of the lid 31 before it is bent. Therefore, the rear end portions of the lids 31, 41 are supported mechanically and stably by high pressure by the second protrusions 17, 17 and the protrusion 16 of the chassis 11, and as a result, bulging is reliably prevented. be done. 3. The position of the rear surface of the lids 31, 41 is regulated by the front ends of the lids 31, 41, the panel 21, and the abutments, so that they are spaced to some extent from the rear surface of the chassis 11. There is.

Therefore, the rear surfaces of the lids 31 and 41 and the three rear surfaces of the chassis 11 do not come into contact with each other under low contact pressure, and no sagging occurs between them. As described above, in this embodiment, the lids 31 and 41 are brought into contact with the chassis 11 and the panel 21 in a mechanically stable state. It can be prevented.

Moreover, in the structure of this embodiment, since the first protrusion 15 is composed of the conical base 15a and the cylindrical body 15b, when engaging the notches 34 and 44 of the lid bodies 31 and 41, , it is possible to smoothly perform engagement operations such as positioning by using the inclined surface of the conical base!6a.Furthermore, in this embodiment, the chassis 11 and the pattern panel 21 can be manufactured by integral molding. Since the cost does not increase and the number of screws for attaching the lids 31 and 41 can be reduced compared to the conventional method, it can be provided at low cost.Furthermore, the number of screws can be reduced. Therefore, 0
The advantage of being able to easily attach and detach the lid bodies 31 and 41 is that the lotus clouds are beautiful in their appearance. It can be sent to the line just by inserting the L shape, and the lid body 6, 7 can be sent to the line just by attaching the conventional lid body 6, 7 to the chassis.
It is not necessary to screw in the screw to prevent the part 7 from falling off.
Therefore, work efficiency during adjustment and inspection can be improved. Note that the present invention is not limited to the above embodiments. For example, the engagement location between the front end portions of the lids 31, 41 and the panel o 21 is not limited to one location, but may be set at multiple locations. This also applies to the rear end portions of the lids 31 and 41. In addition, the shapes of the first and second protrusions 15 and 17, the shape of the ribs 22, the positions of the concave portions 33 and 43, etc. can be modified in various ways without departing from the gist of the present invention. As described in detail above, according to the present invention, which improves the structure of the lid chassis and panel, it is possible to eliminate the need for a cushioning member, improve the aesthetic appearance and workability during assembly, and achieve easy and inexpensive maintenance. A zero-pyramid structure of an electronic device can be provided.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing the cliff structure of a conventional electronic device, FIGS. One embodiment is shown, and FIG. 3 is an exploded perspective view showing the cliff structure of an electronic device, and FIGS. 4 to 6 are views showing essential parts of the bell structure shown in FIG. 3. 11... Chassis, 21... Panel, 31, 41... Lid, 1
5...first protrusion, 1 wealth...protrusion, 17...second
protrusion, 18...protrusion, 22 state ribto 32,42...
・Through hole, 33, 43... recessed part " 34, 44...
Notch. Figure 1 Figure 2 Figure 4 Figure 3 Figure 5 Figure 6

Claims (1)

[Claims] 1. In a case structure of an electronic device in which a panel with a speaker mounted thereon is attached to the front part of the chassis, and lid bodies covering the upper and lower openings of the chassis are respectively attached, the front ends of both sides of each lid body are attached. A notch is provided on each side of the chassis, and a notch is provided protruding near both upper and lower ends of the front end of both sides of the chassis, and when each cover is attached, the notches are engaged with the above-mentioned notches, and the inner side of each cover is attached to the chassis. a first protrusion that is spaced apart from the side surface; a recess that is provided at the front end of each lid body and protrudes inward of the chassis; A rib that engages with each recess to press the lid against the panel, a hole provided on the rear of each lid, and a rib provided protruding near both upper and lower ends of the rear of the chassis that presses the lid against the panel. A casing structure for an electronic device, comprising second protrusions that press against the upper and lower sides of the chassis, respectively.