JP2008147305A - Cabinet for electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reliably fix a front panel without adding unreasonable force to the front panel by easily attaching the front panel and arranging the front panel at a correct position. <P>SOLUTION: The cabinet for electronic equipment includes: a chassis; an upper cover; and the front panel. The chassis has a screw hole 121 with a female screw formed therein in the side wall part 12. The upper cover includes in a side surface part 22: an extrusion part 221 extruded inward; and a through-hole 222. The front panel 3 includes: an engagement projection 311; and an engagement recess hole 313 with a recessed curved shape, where the through-hole 31 is formed at the center. The extrusion part 221 is fitted to the engagement recess hole. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a housing of an electronic device, and more particularly, to a housing provided with a front panel disposed on the front side of a chassis in which electronic components are incorporated and an upper cover that covers the chassis.

  For example, this type of housing used in a DVD recorder has buttons for various operations, a front panel with an opening for entering and exiting DVD media, and components such as a DVD recorder unit and a substrate. A chassis and an upper cover that covers the chassis are provided.

  The front panel has an engaging projection protruding to the back side, and is fixed by engaging the engaging projection with the engaging portions of the chassis and the upper cover. The engaging convex portion has elasticity, and includes a locking claw that protrudes from the engaging convex portion and can be elastically deformed. The front panel is attached by engaging the engaging claws with engaging recesses formed in the chassis and the upper cover (Japanese Patent Laid-Open Nos. 2005-294728 and 2002-314259). See the official gazette).

  However, in the method of attaching the front panel using only the elastic force of the engaging claw of the engaging convex portion, the strength is insufficient depending on the shape and size of the chassis, upper cover or front panel. It may become. Further, by repeating elastic deformation, the member may be fatigued, the elastic force may be weakened, and the engagement may be sweetened. If the strength of the locking claw is insufficient, or if the engagement between the locking claw and the chassis or the upper cover is poor, a problem that the front panel falls off easily occurs.

  Therefore, in the invention described in Japanese Patent Application Laid-Open No. Sho 62-281500, the cover has a throttle portion, the protrusion of the front panel has a hole that fits into the throttle portion, and the throttle portion is A device that penetrates the hole and is in direct contact with the chassis is disclosed.

JP 2005-294728 A JP 2002-314259 A JP-A-62-281500

  However, in Japanese Patent Application Laid-Open No. 62-281500, it is formed so that the tightening force by the screw does not directly act on the front panel, and the front panel cannot be accurately positioned by tightening the screw. It is necessary to perform accurate positioning. Moreover, because of the aperture shape, a sharp portion may be formed, and in this case, the front panel may be scraped off and scraped to the sharp portion.

  Accordingly, an object of the present invention is to easily attach a front panel and to arrange the front panel at an accurate position.

  Another object of the present invention is to attach the front panel easily and securely fix the front panel without applying an excessive force.

  In order to achieve the above object, the present invention comprises a metal chassis provided with side wall portions erected from both end portions of the bottom surface portion, an upper surface portion covering the upper portion of the chassis, and a side surface portion covering the side wall portion. In a housing of an electronic apparatus having a portal-shaped metal upper cover provided and a resin front panel engaged with the chassis and the front side of the upper cover, a female screw is formed on the side wall of the chassis. The upper cover includes a push-out portion that is pushed inward on the side surface portion, and a through-hole, and the front panel projects to the back side and the side wall portion. And an engaging convex portion disposed between the side surface portions, and the engaging convex portion has a concave curved engaging concave hole that is formed with a through portion at least in the center and can be fitted to the pushing portion. And the upper cover is The projecting part of the part is fitted in the engaging concave hole, the central part projects from the through part of the engaging concave hole and is in contact with the chassis, and the bolt penetrates the through hole of the upper cover. The bolt is screwed into the screw hole.

  According to this configuration, the front panel can be easily attached. Moreover, since the said extrusion part engages with the said engagement concave hole and the inner surface of the said extrusion part presses down the concave curved surface of the said engagement concave hole, it is possible to position the said front panel.

  As a result, it is possible to reduce the time and effort required for assembling, as well as the time and effort required for adjusting the positioning of the front panel, and it is possible to reduce the manufacturing cost. In addition, since the stress applied to the front panel can be reduced as compared with the case where the front panel is engaged and fixed by the elastic force, the fatigue of the front panel can be reduced and the life of the housing can be reduced. Can be extended.

  The said structure WHEREIN: The through-hole of the said upper cover is good also as what is formed in the inside of the said extrusion part. Moreover, the said extrusion part has a cylindrical shape, and the said engagement concave hole can also be made into the cylindrical hole which can be engaged with the said extrusion part.

  Furthermore, the said structure WHEREIN: The said extrusion part has a frustum shape whose axial direction cross section is a polygonal shape, The said engagement recessed hole is provided with the concave surface part which the frustum-shaped inclination part of the said extrusion part contact | abutted. It is good as it is. The cross-sectional shape is not limited to a polygon, and may be a circle.

  The connector structure according to the present invention may be as follows. That is, a gate-shaped metal made of a metal chassis having a side wall portion standing upright from both side end portions of the bottom surface portion, a top surface portion covering the upper portion of the chassis, and a side surface portion covering the side wall portion. In an electronic device casing having an upper cover and a front panel made of resin and engaged with the chassis and the front side of the upper cover, the side wall portion of the chassis penetrates through a screw hole in which a female screw is formed. A rectangular engagement hole, and the upper cover includes a push-out portion extruded in a spherical shape toward the inner side of the side surface portion, and a through-hole formed in the center of the push-out portion, The front panel protrudes on the back side and includes an engaging convex portion disposed between the side wall portion and the side surface portion, and the engaging convex portion protrudes inward and elastically deforms a locking claw, When the penetration part is formed in the center The front panel includes an engagement concave hole formed in a mortar shape that can be fitted to the spherical shape of the push-out portion, and the front panel has the engagement claw engaged with the engagement hole of the chassis. The mortar-shaped portion of the engagement concave hole is disposed so as to be opposite to the side wall portion, and the upper cover has a spherical portion of the extrusion portion and a mortar-shaped portion of the engagement concave hole. The center part protrudes from the penetration part of the engagement concave hole and is in contact with the chassis, and the through hole formed in the center of the engagement convex part overlaps with the screw hole of the chassis. A housing for an electronic device, wherein the housing is disposed, a bolt is inserted from the outside of the upper cover, and the bolt is screwed into the screw hole.

  According to the present invention, the front panel can be easily attached and the front panel can be arranged at an accurate position.

  Further, according to the present invention, the front panel can be easily attached, and the front panel can be securely fixed so that an excessive force is not applied to the front panel.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view schematically showing a hard disk built-in DVD recorder using the present invention. The hard disk built-in DVD recorder A shown in FIG. 1 includes at least a chassis 1, an upper cover 2, a front panel 3, a substrate Bp, a hard disk unit Hd, and a DVD recorder unit Dr.

  The chassis 1 is formed by bending a metal plate, and has a rectangular bottom surface portion 11, side wall portions 12 formed by bending and standing up ends on both sides of the bottom surface portion 11, and the back surface of the bottom surface portion 11. And a rear panel 13 formed by bending the end portion on the side.

  The upper cover 2 is formed by bending a metal plate, and has an upper surface portion 21 that faces the bottom surface portion 11 of the chassis 1 and side surface portions 22 that are formed by bending both end portions of the upper surface portion 21. is doing. The front panel 3 is formed by integral molding of resin, and is engaged with an opening 30 to which an openable / closable door is attached, and a side wall portion 12 of the chassis 1 and a side surface portion 22 of the upper cover 2 projecting to the back side. It has an engaging convex part 31 to be engaged, and an engaging part 32 to be engaged with the upper surface part 21 of the upper surface cover 2.

  A substrate Bp is disposed on the upper surface of the chassis 1. The substrate Bp is disposed in an insulated state with respect to the chassis 1. Electronic components (not shown) such as a memory and a microcomputer are mounted on the substrate Bp, and the hard disk unit Hd is fixed to the substrate Bp. In addition, the DVD recorder unit Dr is fixed to the chassis 1 via a fixing tool St. The hard disk unit Hd and the DVD recorder unit Dr are connected to a connector (not shown) mounted on the substrate Bp via a deformable cable (not shown) such as a flat cable.

  2 is an exploded perspective view in which the front panel mounting portion of the hard disk built-in DVD recorder shown in FIG. 1 is enlarged, and FIG. 3 is an enlarged side view of the front panel mounting portion of the hard disk built-in DVD recorder shown in FIG. 4 is an enlarged cross-sectional view taken along line XX of the front panel mounting portion shown in FIG. As shown in FIGS. 2 and 4, a first screw hole 121 in which a female screw is formed on the front side of the side wall portion 12 of the chassis 1, and a rectangular engagement hole formed in the upper portion of the first screw hole 121. 122. As shown in FIG. 1, a second screw hole 120 is formed on the back side.

  On the front side of the side surface portion 22 of the upper cover 2, an extruding portion 221 that is pushed inward and a first through hole 222 that penetrates from the outside to the inside at the center of the extruding portion 221 are formed. A second through hole 220 is formed on the back side of the side surface portion 22. Further, although not shown, an engaged portion to which the engaging portion 32 of the front panel 3 is engaged is provided. The extrusion part 221 is formed by extruding the side part 22, and the inner side 221a has a spherical shape.

  The engaging convex part 31 of the front panel 3 has a locking claw 311 that protrudes inward and elastically deforms, and an engaging concave hole 312 in which a through part 313 is formed in the center. The engagement concave hole 312 has a mortar-shaped concave surface 312 a formed on the outer side, and the concave surface 312 a is formed with a spherical surface having the same curvature as the spherical surface of the inner side 221 a of the pushing portion 221. The through-hole 313 has such a size that the tip of the push-out portion 221 protrudes when the push-out portion 221 is engaged with the engagement concave hole 312.

  The procedure for assembling the front panel 3 of the hard disk built-in DVD recorder A will be described below. After assembling the board Bp, the hard disk unit Hd, and the DVD recorder unit Dr to the chassis 1, the upper cover 2 is engaged from above. At this time, it arrange | positions so that the side part 22 of the upper cover 2 may become the outer side of the side wall part 12 of the chassis 1. FIG. Further, the first screw hole 121 of the side wall portion 12 and the first through hole 222 of the upper cover 2 and the second screw hole 120 of the side wall portion 12 and the second through hole 220 of the upper cover 2 are arranged to overlap each other.

  Thereafter, the front panel 3 is attached from the front side so that the engaging convex portion 31 is inserted between the side wall portion 12 and the side surface portion 22. More specifically, the latching claw 311 formed on the engagement convex portion 31 is inserted from the front side in a state of being elastically deformed, and is inserted into the engagement hole 122 formed in the side wall portion 12. At this time, the pushing portion 221 formed on the side surface portion 22 of the upper cover 2 is engaged with the engaging concave hole 312 formed in the engaging convex portion 31. Since the engaging concave hole 312 and the pushing portion 221 have the same curvature, the concave surface 312a of the engaging concave hole 312 and the inner surface 221a of the pushing portion 221 are accurately arranged. Moreover, since the inner surface 221a of the extrusion part 221 is formed with a spherical surface and is not provided with a sharp part, it can be inserted while suppressing damage to the resin-made engaging convex part 31.

  In this state, the tip end portion of the inner surface 221a of the pushing portion 221 of the side surface portion 22 protrudes from the through portion 313 formed in the center of the engaging concave hole 312 of the engaging convex portion 312 and comes into contact with the side wall portion 12. ing. Further, the first through hole 222 formed at the center of the pushing portion 221 and the first screw hole 121 of the side wall portion 12 are arranged so as to overlap each other. In this state, the bolt Bt is inserted from the outside of the side surface portion 22 and the bolt Bt is screwed into the screw hole 122. Similarly, the second screw hole 120 and the second through hole 220 are also overlapped, and a bolt Bt is inserted from the second through hole 220 and screwed into the second screw hole 120 (see FIG. 1).

  Thereby, the side surface portion 22 is firmly fixed to the side wall portion 12, that is, the upper cover 2 is firmly fixed to the chassis 1. In addition, the front panel 3 is also prevented from coming off due to the engagement between the locking claw 311 and the engagement hole 122.

  Further, since the inner surface 221a of the pushing portion 221 presses the concave surface 312a of the engaging concave hole 312, the position of the engaging concave hole 312 with respect to the pushing portion 221 can be moved to an accurate position. The whole is also moved to an accurate position and fixed.

  Furthermore, since the inner surface 221a of the pushing portion 221 is in contact with the concave surface 312a of the engaging concave hole 312, the pressure applied to the concave surface 312a can be reduced, and the entire amount of the engaging concave hole 312 and the front panel 3 can be reduced accordingly. Unreasonable stress can be reduced, and damage and deformation can be suppressed.

  Another example of the present invention will be described with reference to the drawings. FIG. 5 is a cross-sectional view of the front panel mounting portion of the hard disk built-in DVD recorder according to the present invention. As shown in FIG. 5, the side surface portion 22 is formed at a position where the extruded portion 223 and the first through hole 224 are different. That is, the pushing portion 223 is in contact with the engagement concave hole 312 and is in contact with the side wall portion 12, and the first through hole 224 and the first screw hole 121 are formed by removing the engagement concave hole 312. The screw hole 121 is fixed by screwing it with a bolt Bt penetrating the first through hole 224.

  Thereby, it is not necessary to form the 1st through-hole 224 in the extrusion part 223, and it can suppress that the shape of the extrusion part 223 is distorted when forming the 1st through-hole 224. FIG. Further, there is no need to form the through hole 224, the through portion 313, and the first screw hole 121 in an overlapping manner, and the degree of freedom in processing and design can be increased accordingly.

  Still another example of the present invention will be described with reference to the drawings. FIG. 6 shows a two-sided view of an extruding part of another example of the casing of the electronic device according to the present invention. In FIG. 6A, the extruded portion 225 has a cylindrical shape. In this case, it is easy to form a through hole inside. In this case, the curved surface portion 225b of the inner surface 225a and the engagement concave hole 314 are formed in close contact with each other. In the case of this shape, since the inner surface 225a does not press the curved surface portion 314a of the engagement concave hole 314, the stress applied to the engagement convex portion 31 can be reduced. Moreover, as shown to (B) of FIG. 6, the extrusion part 225 may be formed in the truncated cone shape.

  Furthermore, as shown in FIG. 6C, the extruded portion 226 may be formed to have two steps. The extruding portion 226 is formed with a first step portion 226a at the front end and a second step portion 226b at the rear end. The engagement concave hole 315 has a mortar-shaped concave surface 315a having a circular cross section. When the 1st step part 226a penetrates the penetration part 313 and contact | abuts with the side wall part 12, it forms so that the outer peripheral part of the 2nd step part 226b may contact | abut with the concave surface 315a. According to this configuration, the contact surface between the pushing portion 226 and the engagement concave hole 315 can be reduced.

  In each of the above embodiments, for the sake of convenience, the extruding part has a circular cross-sectional shape, but it may be polygonal. In addition, although a hard disk DVD recorder is described as an example as an example, the invention is not limited thereto, and is widely used in devices that include a chassis, an upper cover, and a front panel, and at least partially overlap and fix each part. Is possible.

  As mentioned above, although embodiment of invention was described concretely, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary.

  The present invention can be applied to a front panel of a housing such as a DVD player, a DVD recorder, a CD player, or a VTR.

It is a disassembled perspective view which shows the outline of the DVD recorder with a built-in hard disk using this invention. FIG. 2 is an exploded view of the front panel mounting portion of the hard disk built-in DVD recorder shown in FIG. 1. It is the side view to which the front panel attachment part of the DVD recorder with a built-in hard disk shown in FIG. 1 was expanded. It is sectional drawing cut | disconnected by the XX line | wire shown in FIG. FIG. 5 is a cross-sectional view of the front panel mounting portion of the hard disk built-in DVD recorder according to the present invention. It is a 2nd page figure of the extrusion part of the further another example of the housing | casing of the electronic device concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chassis 11 Bottom face part 12 Side wall part 121 1st screw hole 120 2nd screw hole 122 Engagement hole 2 Upper cover 21 Upper surface part 22 Side surface part 220 2nd through-hole 221 Extrusion part 222 1st through-hole 3 Front panel 30 Opening part 31 Engaging convex part 311 Engaging claw 312 Engaging concave hole 313 Through part 32 Engaging part Bp Substrate Hd Hard disk unit Dr DVD recorder unit Rp Rear panel St Fixing tool

Claims (5)

A metal chassis provided with side wall portions erected from both end portions of the bottom surface portion;
A gate-shaped metal upper cover provided with an upper surface portion covering the upper portion of the chassis and a side surface portion covering the side wall portion;
In a housing of an electronic apparatus having a resin front panel engaged with the chassis and the front side of the upper cover,
The side wall portion of the chassis includes a screw hole in which a female screw is formed, and a rectangular engagement hole penetrating through,
The upper cover includes an extruded portion that is extruded in a spherical shape toward the inside on a side surface portion, and a through hole formed in the center of the extruded portion,
The front panel protrudes on the back side and includes an engaging convex portion disposed between the side wall portion and the side surface portion, and the engaging convex portion protrudes inward and elastically deforms a locking claw, A through hole is formed in the center and the periphery is provided with an engagement concave hole formed in a mortar shape that can be fitted with the spherical shape of the extruded portion,
The front panel is arranged so that the locking claw engages with the engagement hole of the chassis, and the mortar-shaped part of the engagement concave hole is positioned opposite to the side wall part, and the upper cover The spherical portion of the extruded portion is in contact with the mortar-shaped portion of the engagement concave hole, and the center portion protrudes from the through portion of the engagement concave hole and is in contact with the chassis. A through hole formed in the center of the mating convex portion is arranged so as to overlap with the screw hole of the chassis, a bolt is inserted from the outside of the upper cover, and the bolt is screwed into the screw hole. A housing for electronic devices. A metal chassis provided with side wall portions erected from both end portions of the bottom surface portion;
A gate-shaped metal upper cover provided with an upper surface portion covering the upper portion of the chassis and a side surface portion covering the side wall portion;
In a housing of an electronic apparatus having a resin front panel engaged with the chassis and the front side of the upper cover,
The side wall portion of the chassis has a screw hole in which a female screw is formed,
The upper cover includes an extruded portion that is pushed inward on the side surface portion, and a through hole,
The front panel protrudes on the back side and includes an engaging convex portion disposed between the side wall portion and the side surface portion, and the engaging convex portion is formed with a penetrating portion at least in the center. And a concave curved engagement groove that can be fitted with
The upper cover has a protruding portion of the pushing portion fitted in the engaging concave hole, a central portion protruding from a through portion of the engaging concave hole, and is in contact with the chassis. A housing of an electronic device, wherein a bolt is passed through a through hole and the bolt is screwed into the screw hole.   The casing of the electronic device according to claim 2, wherein the through hole of the upper cover is formed inside the pushing portion. The extruded portion has a cylindrical shape,
The casing of the electronic device according to claim 2, wherein the engagement concave hole is a cylindrical hole that can be engaged with the pushing portion. The extruded portion has a frustum shape with a polygonal cross section in the axial direction,
4. The electronic device casing according to claim 2, wherein the engagement concave hole includes a concave surface portion with which a frustum-shaped inclined portion of the pushing portion abuts.

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