JP2007208091A - Case structure of electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a case structure of an electronic apparatus capable of obtaining an enough stiffness of a case. <P>SOLUTION: In the case having a constituent element of a chassis 1 in which bilateral side boards 1b, 1b rise from both sides of a base plate 1a to form a cross section U-shape, both ends of a horizontal plane 2a of a fittings 2 in which the horizontal plane 2a and a vertical plane 2b are linked in a cross section L-shape are secured to upper portions of the bilateral side boards 1b, 1b by screws 3, 3. At least one place of a lower portion of the vertical plane 2b is secured to the chassis 1 by the screw 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electronic device, and more particularly to a housing structure thereof.

  An example of a housing structure of a conventional electronic device will be described with reference to FIGS. FIG. 5 is a plan view showing an example of a housing structure of a conventional electronic device, and FIG. 6 is a front view showing the housing structure of the electronic device. The metal fitting 5 shown in the figure has a function of preventing the deformation of the chassis 4, and the horizontal surface portion 5 a and the vertical surface portion 5 b are connected so as to form a right angle and are formed in a substantially L-shaped cross section.

  Drawing parts 5c and 5c that are one step lower than the central part are formed at both ends of the horizontal surface part 5a by drawing. Although the rigidity is increased by performing the drawing process in this manner, the drawing process may not be performed. The drawing surface 5c is provided with a square hole 5d and a round hole through which the screw 3 is inserted.

  In the chassis 4 constituting the housing, side plates 4b and 4b are formed from both sides of the bottom plate 4a so as to have a substantially U-shaped cross section. Bending portions 4c and 4c are formed in front portions of the side plates 4b and 4b. The front plate 4d hangs from the front end of the bottom plate 4a.

  In order to regulate the distance between the side plates 4 b and 4 b of the chassis 4, a metal fitting 5 is fastened to the chassis 4 by screws 3 and 3 as shown in A and B parts in the figure. That is, the convex portions formed by bending from the bent portions 4c and 4c of the chassis 4 are fitted and positioned in the square holes 5d and 5d provided in the drawing surfaces 5c and 5c of the metal fitting 5, and further the drawing surface. The screws 3 and 3 inserted through the round holes 5c and 5c are screwed into the screw holes provided in the bent portions 4c and 4c of the chassis 4.

  Thus, although the distance (L shown in FIG. 7) between the side plates 4b and 4b of the chassis 4 is restricted, when the lateral external force F shown in FIG. 7 is applied, the side plates 4b and 4b of the chassis 4 are inclined. The angle θ formed between the side plates 4b and 4b and the bottom plate 4a is not 90 °. Thus, the conventional case structure shown in FIGS. 5 and 6 has a problem that sufficient rigidity of the case cannot be obtained.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a casing structure of an electronic device in which sufficient rigidity of the casing can be obtained.

  The housing structure of the electronic device according to the present invention is a metal housing in which a horizontal plane portion and a vertical surface portion are connected in an L-shaped cross section in a housing having a chassis in which left and right side plates rise from both sides of a bottom plate and are formed in a U-shaped cross section. Both ends of the horizontal plane portion are fastened to the upper portions of the left and right side plates with screws, and the lower portion of the vertical surface portion is fastened to the chassis with screws at least at one place.

  Further, in the housing structure of the electronic device, in the vicinity of a portion to which the chassis and the metal fitting are fastened, a hole or a recess provided in one of the chassis and the metal fitting and a protrusion provided in the other are fitted. The part to be fastened is positioned.

  According to the casing structure of the electronic device of the present invention, sufficient rigidity of the casing can be obtained with a simple structure.

  The best mode for carrying out the present invention will be described below with reference to examples.

  FIG. 1 is a plan view showing a housing structure of an electronic device according to Embodiment 1 of the present invention, and FIG. 2 is a front view showing the housing structure of the electronic device. The metal fitting 2 shown in the figure has a function of preventing the deformation of the chassis 1, and the horizontal surface portion 2 a and the vertical surface portion 2 b are connected so as to form a right angle and are formed in a substantially L-shaped cross section.

  At both ends of the horizontal surface portion 2a, drawn surfaces 2c and 2c that are one step lower than the center are formed by drawing. Although the drawing process can increase the rigidity, the drawing process may not be performed. The drawing surface 2c is provided with a round hole through which the square hole 2d and the screw 3 are inserted.

  In the chassis 1 constituting the housing, side plates 1b and 1b are raised from both sides of the bottom plate 1a and formed in a substantially U-shaped cross section. Bending portions 1c and 1c are formed in front portions of the side plates 1b and 1b. The front plate 1e is suspended from the front end of the bottom plate 1a.

  In order to regulate the distance between the side plates 1 b and 1 b of the chassis 1, the metal fitting 2 is fastened to the chassis 1 by screws 3 and 3 as shown in the A and B portions in the figure. That is, the convex portions formed by bending the bent portions 1c and 1c of the chassis 1 are fitted and positioned in the square holes 2d and 2d provided in the drawing surfaces 2c and 2c of the metal fitting 2, and the drawing surface is further drawn. The screws 3 and 3 inserted through the round holes 2c and 2c are screwed into the screw holes provided in the bent portions 1c and 1c of the chassis 1.

  Thus, the distance L between the side plates 1b and 1b of the chassis 1 is regulated. This example is different from the above-described conventional example in that the lower portion of the vertical surface portion 2b of the metal fitting 2 is fastened to the chassis 1 by screws 3 and 3 as shown in C and D portions of the drawing.

  That is, slits 2e and 2e are formed below the vertical surface portion 2b of the metal fitting 2, and the drawing surfaces 2f and 2f are formed below the slits 2e and 2e so as to protrude from the center portion by drawing. . The rigidity is increased by performing the drawing process in this way. A round hole through which the recess 2g and the screw 3 are inserted is formed in the drawing surface 2f.

  Further, a tongue piece extending upward is formed on the bottom plate 1a of the chassis 1, and half piercings 1d and 1d formed on the tongue piece are fitted to the recesses 2g and 2d of the drawing surfaces 2f and 2f of the metal fitting 2 for positioning. Further, the screws 3 and 3 inserted through the round holes of the drawing surfaces 2f and 2f are screwed into the screw holes provided in the tongue piece of the chassis 1.

  As described above, since the lower side of the metal fitting 2 is also fixed to the chassis 1, even if the lateral external force F shown in FIG. 2 is applied, the side plates 1b and 1b of the chassis 1 are not tilted and the chassis is sufficiently Stiffness is obtained. Such an effect can be obtained by a simple process of simply tightening the screws 3 and 3.

  Further, since the half piercings 1d and 1d of the chassis 1 are fitted into the recesses 2g and 2d of the drawing processed surfaces 2f and 2f of the metal fitting 2, positioning at the time of screw tightening is easily performed.

  3 is a plan view showing a casing structure of an electronic device according to a second embodiment of the present invention, and FIG. 4 is a front view showing the casing structure of the electronic device. In this example, the lower side of the metal fitting 2 is fixed to the chassis 1 at one place of the E portion shown in the figure. Other configurations are the same as those in the first embodiment, and the same members as those in the first embodiment are denoted by the same reference numerals and detailed description thereof is omitted.

  In this example, the rigidity of the housing is somewhat smaller than in the first embodiment, but the effect of the present invention can be obtained. Since the number of screwing points is reduced, the assembly man-hour is reduced.

  The embodiment is configured as described above, but the invention is not limited to this, and for example, a recess or a square hole may be provided in the chassis and a protrusion provided in the bracket may be fitted thereto.

It is a top view which shows the housing structure of the electronic device which is Example 1 of this invention. It is a front view which shows the housing structure of the same electronic device. It is a top view which shows the housing structure of the electronic device which is Example 2 of this invention. It is a front view which shows the housing structure of the same electronic device. It is a top view which shows the example of the housing structure of the conventional electronic device. It is a front view which shows the housing structure of the same electronic device. It is a front view for demonstrating the effect | action of the housing structure of the same electronic device.

Explanation of symbols

1 Chassis, 1a Bottom plate, 1b Side plate, 1c Bending part, 1d Half piercing 1e Front plate 2 Metal fittings, 2a Horizontal plane part, 2b Vertical surface part, 2c Drawing process surface, 2d Square hole 2e Slit, 2f Drawing process surface, 2g Dent 3 Screw 4 Chassis, 4a Bottom plate, 4b Side plate, 4c Bending part, 4d Front plate 5 Metal fitting, 5a Horizontal surface part, 5b Vertical surface part, 5c Drawing surface, 5d Square hole

Claims (2)

In a chassis having a chassis in which left and right side plates rise from both sides of a bottom plate and are formed in a U-shaped cross-section, both ends of the horizontal plane portion of the metal fitting in which a horizontal plane portion and a vertical plane portion are connected in an L-shaped cross section are the left and right side plates. A casing structure for an electronic device, wherein the upper surface of the electronic device is fastened with screws and the lower portion of the vertical surface portion is fastened with screws to the chassis at least at one place. The portion to be fastened is positioned by fitting a hole or a recess provided in one of the chassis and the metal fitting with a protrusion provided on the other in the vicinity of the portion to which the chassis and the metal fitting are fastened. Item 1. The electronic device casing structure according to Item 1.

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