JPH0997982A - Housing for electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To blindfold the interior of a housing body by effectively fixing the cover of integral molding to a service hole without fault by easy designing and low manufacturing cost by dispersing a plurality of locking pieces on the rear surface of a cover covering the front surface of the hole. SOLUTION: A cover 4 is mounted at the sidewall 2 of a housing body 1 via a hinge 5, the front surface of a service hole 3 is covered with the cover 4, and the interior of the body 1 is blindfolded. In the case that the components and the like in the body 1 are inspected, regulated and replaced, when the cover 4 is rotated counterclockwise (arrow) at the hinge 5 as a fulcrum, hooks (locking pieces) 41, 42 are removed from the hole 3, and the hole 3 is opened. After the inspection is executed, when the cover 4 is rotated clockwise, the hooks 41, 42 are engaged with the peripheral edge of the hole 3, the cover 4 is fixed to the sidewall 2, the front surface of the hole 3 is covered with the cover 4, and the interior of the body 1 is again blindfolded by resetting it to the original state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION Generally, for electronic equipment manufactured by an electronic equipment manufacturer, final adjustment work is performed at the installation site after delivery to the customer. The final adjustment in the field is often performed using a service hole for adjustment, which is provided in a small window shape at a part such as a corner of the side surface of the housing without completely opening the housing. The present invention relates to a housing of an electronic device, and more particularly, to a housing of an electronic device having a structure in which a cover formed by resin molding integrally with the housing covers a service hole provided on a wall surface.

[0002]

2. Description of the Related Art If a casing of an electronic device of this type is molded with a resin instead of a sheet-metal processed metal plate, it has various characteristics such as easy insulation, excellent moldability, and suitable for mass production. FIG. 5 shows a housing having a structure in which a service hole for adjustment provided on a wall surface is covered with an integrally molded cover. FIG. 5 is a side view showing a configuration of a main part of a case of a conventional electronic device.

In FIG. 5, reference numeral 2 is a synthetic resin side wall, 3 is a service hole provided in the side wall 2, 4 is a cover, and 5 is a hinge. The cover 4 is formed integrally with the side wall 2, and a hook 41 is provided on the inner surface side of the opposite end of the hinge 5.
The cover 4 is attached to the side wall 2 by elastically locking the hook 41 to the peripheral edge of the service hole 3. When the cover 4 is attached to the side wall 2, the front surface of the service hole 3 is covered and blindfolded.

[0004]

As described above, in the conventional electronic equipment, the integral cover 4 is attached to the side wall 2 so as to be blindfolded. Therefore, since the cover 4 is integrally molded with a resin molding die, the number of dies and parts is smaller than that of a separately molded cover, the manufacturing cost is low, and the cover is not lost. There are advantages. However, the hooks 4 are offset to the opposite ends of the hinge 5
Since 1 is locked to the peripheral edge of the service hole 3, it is necessary to give special consideration to the configuration of the cover 4 such as the dimension Lh of the hinge 5 and the thickness.

If the length Lh of the hinge 5 is too short by designing without consideration, the curvature of the hinge 5 becomes small and a strong tensile stress may be generated in the hinge 5 when the cover 4 is attached, which may cause cutting. If the dimension Lh is too long, the
As shown in FIG. 3, the cover 4 is inclined by an angle θ, and a gap is formed between the side wall 2 and the cover 4, so that the cover 4 is opened in the service hole 3.
There was a problem that it became uncertain to fix it to.

The present invention has been made in order to solve the above-mentioned problems of the housing of the conventional electronic equipment. It is easy to design, the manufacturing cost is low, there is no failure, and the integrally molded cover is secured. The purpose of the present invention is to realize an electronic device housing that can be fixed in a service hole and blindfolded.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a locking piece provided on the back surface is resin-molded integrally with a housing through a hinge branched from a wall surface around the service hole, and a locking piece provided on the back surface is provided at the periphery of the service hole. In a housing of an electronic device that is detachably locked to the cover and covers the front surface of the service hole,
The housing of an electronic device comprises a plurality of locking pieces dispersedly provided on the back surface of the cover.

When inspecting, adjusting or replacing parts inside the body, the lower side of the cover is pushed up and pulled toward you. As a result, the cover rotates counterclockwise around the hinge as a fulcrum as shown by the arrow, and the service hole is opened. You can use the open service hall to inspect internal parts. After inspection, adjustment, and replacement, if the cover is turned in the opposite direction, the hook engages with the peripheral edge of the service hole and the cover is fixed to the side wall. Then, the cover covers the front surface of the service hole, and the interior of the main body is blindfolded again.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1. Embodiment 1 of the present invention will be described below with reference to the drawings. 1 is a perspective view showing the configuration of Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view of the main part of FIG. In this embodiment as well, parts having the same functions as those in the related art are designated by the same reference numerals, and the description thereof will be partially duplicated, but will be described in some detail.

In FIGS. 1 and 2, reference numeral 1 is a main body of a housing for electronic equipment. The main body 1 is formed of a synthetic resin material by a molding machine through a heating / pressurizing process to form a rectangular box. Reference numeral 2 is a side wall of the main body 1, and 3 is a service hole penetrating the side wall 2. 4 is a cover and 5 is a hinge. The hinge 5 is located on the side wall 2 near the upper side of the rectangular service hole 3.
To the front side, and the cover 4 is formed integrally with the side wall 2 via the branched hinge 5.

The hinge 5 part is made slightly thin as shown in the drawing, and is provided with flexibility so as to fulfill the hinge function of opening and closing the cover 4. 41 and 42 are covers 4
The two hooks projecting from the back surface of the are distributed and provided at symmetrical positions near the upper side and the lower side. Hooks 41,4
The tip of 2 is formed in a key shape with the step portion facing outward, and the space under the jaw is the inner dimension L of the service hole 3 in the vertical direction.
It is made almost equal to s.

In the embodiment of the present invention having such a structure,
In a normal state, a cover 4 is detachably attached to the side wall 2 as shown in FIGS. Then, the front surface of the service hole 3 is covered by the cover 4 mounted on the side wall 2, and the inside of the main body 1 is blindfolded. When inspecting, adjusting or replacing the parts housed inside the main body 1, the lower side of the cover 4 is pushed up and pulled forward (to the right in FIG. 3). As a result, the hooks 41 and 42 are disengaged from the service hole 3, and the cover 4 is rotated counterclockwise as shown by an arrow with the hinge 5 serving as a fulcrum to rotate the service hole 3
Is released.

In this case, as shown by the dotted line, the cover 4
If the knob 45 is provided on the lower side portion of the front surface of the, the opening / closing operation of the cover 4 can be easily performed. For example, insert a driver into the open service hole 3
It is possible to adjust the resistance value of the electronic components inside the device. After carrying out inspections, etc., turn the cover 4 clockwise,
The hooks 41 and 42 engage with the peripheral edge of the service hole 3 to fix the cover 4 to the side wall 2. In this way, the cover 4 covers the front surface of the service hole 3 and restores the state of FIG. 2 again, so that the interior of the main body 1 is blindly covered without a gap.

Since the hooks 41 and 42 on the upper side and the lower side are engaged with each other when the inside of the main body 1 is blindfolded, even if the hinge 5 is too long, the cover 4 is inclined and a gap is formed between the side wall 2. It never happens. Therefore, the hinge 5
Even if the dimension Lh is somewhat rough, it is easy to manufacture with no hindrance, and there is no concern that the hinge will be cut off and break down. Moreover, since the cover 4 is formed integrally with the side wall 2, it is possible to prevent the cover from being forgotten or lost and to reduce the number of molds and parts, so that the manufacturing cost can be reduced. is there.

Embodiment 2 FIG. 4 is a side view showing the configuration of Embodiment 2 of the present invention. In the second embodiment, as shown in FIGS. (A) and (b), three hooks 41, 42, 43 are provided on the back side of the rectangular cover 4 in a distributed manner on the upper side and the lower side. In the figure (a), the upper side is one and the lower side is two, but in the figure (b), the number of arrangement is reversed. And
The plurality of hooks 41 to 43 engage with the peripheral edges of the upper side and the lower side of the service hole 3 so that the cover 4 is closely attached to the side wall 2 without being offset. According to the second embodiment, the number of dispersed hooks 41 to 43 is increased, which has the advantage of further improving the adhesion and fixing of the cover 4.

In the above embodiment of the present invention, the case where the rectangular covers are connected by one hinge has been described as an example, but the covers may be connected by two or more hinges. Further, although the case where the service hole and the cover are rectangular has been described as an example, the present invention can be applied to the case where the service hole and the cover are circular or the like. In addition, a hook with a key-shaped tip was provided on the back surface of the cover to removably engage with the peripheral edge of the service hole, but the mutual contact surfaces can also be detachably engaged with a weakly inclined triangle or arc. However, the shape and installation position of the knob are not necessarily limited to those in the embodiment.

[0017]

According to the present invention, the locking piece provided on the back surface of the service hole can be detachably attached to the periphery of the service hole by being resin-molded integrally with the housing through the hinge branched from the wall surface around the service hole. In a housing of an electronic device including a cover that locks and covers the front surface of a service hole, a housing of the electronic device is configured by disposing a plurality of locking pieces on the back surface of the cover.

As a result, there is no need to pay extra attention to the dimension of the hinge at the time of design as in the conventional case.
A strong tensile stress is not generated in the hinge when the cover is attached, and the cover is not cut. Further, there is no possibility that the cover is inclined and a gap is formed between the side wall and the cover, so that dust may not enter and the fixing of the cover to the service hole becomes uncertain. In addition, since the cover is formed integrally with the side wall, it is possible to prevent the cover from being forgotten or lost, and to reduce the number of molds and parts, so that the manufacturing cost can be reduced.

Therefore, according to the present invention, a housing of an electronic device which is easy to design, has a low manufacturing cost, is free from failure, and is capable of securely fixing an integrally molded cover in a service hole to be blindfolded. Can be realized.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a first embodiment of the present invention.

FIG. 2 is a sectional view of a main part of FIG.

FIG. 3 is a side view showing the operation of the first embodiment of the present invention.

FIG. 4 is a side view showing a configuration of a second embodiment of the present invention.

FIG. 5 is a side view of a main part of a conventional electronic device.

6 is a cross-sectional view showing the operation of FIG.

[Explanation of symbols]

 1 Main body of housing 2 Side wall 3 Service hole 4 Cover 5 Hinge 41 Hook 42 Hook 43 Hook 45 Knob

Claims (1)

[Claims] 1. A locking piece provided on the back surface of the service hole is detachably locked to the periphery of the service hole by being resin-molded integrally with the housing through a hinge branched from a wall surface around the service hole. In a housing of an electronic device including a cover for covering a front surface of the service hole, a plurality of locking pieces are provided on the back surface of the cover in a dispersed manner.