JPH04177796A - Cabinet structure of electronic equipment - Google Patents

Abstract

PURPOSE:To fix a main cover and a subcover to a case without using screws, by a method wherein the main cover is prevented from sliding by the subcover, which is engaged with the main cover and prevented from sliding. CONSTITUTION:A cabinet 1 accommodating an electronic parts 7 is constituted of a case 2 whose single surface is opened, a main cover 3 covering an aperture part of the case 2, and a subcover 5 covering a battery accommodating part 4. The main cover 3 is made to slide to the case 2, and protruding stripes 3a of the main cover 3 are engaged with recessed trenches 2i formed on the case 2, thereby fastening one end side of the main cover 3. Fastening parts 3c formed on the other end side of the main cover 3 are inserted into notches 2h of the case side with pressure, thereby fastening the slide of the main case 3. The subcover 5 is made to slide to the case 2, thereby engaging protruding stripes of the subcover with the recessed trenches 2i of the case. Hence the covers can be fixed to the case without using screws.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a casing structure for electronic equipment, which is most suitable for small-sized portable communication devices such as pagers, transceivers, and radios.

Conventional technology Traditionally, electronic devices of this type were carried in one's chest pocket or
Since devices are often attached to a heald and carried around, there is a need for a compact and easily portable housing structure.

For this reason, conventionally, a housing structure as shown in FIG. 10 is generally adopted.

In other words, a case a containing electronic components, and a case a.
The battery cover d is comprised of a cover b that covers the bottom opening of the case a, and a battery cover d that can be opened and closed to freely cover the battery accommodating part C provided in the case a.

Furthermore, in the opening of the battery housing part C, there is a guide rail f that guides a guide part e (also located in the part facing e in the figure) that is protruded from the battery cover d, and a hook g that is protruded from the battery cover d. A lock part (not shown) is provided to which the battery cover d is removably engaged, and the hook g can be released from the lock part of the cover b by pushing the opening/closing operation part provided on the battery cover d. It has become.

With this, when replacing the battery, first push the opening/closing operation part to remove the hook g, then slide the battery cover d to open the battery compartment C.
Batteries can be easily replaced.

Problem to be Solved by the Invention However, in the conventional case structure described above, the cover b is screwed onto the case a from the outside with the set screw i, so that the head of the set screw i touches the surface of the case. There was a problem with the appearance that was undesirable due to exposure to water.

In addition, since a metal set screw l is used to securely attach cover b to case a, static electricity can enter the interior through this set screw i, causing damage to the electronic components housed inside case a. There were also problems such as microcomputers and integrated circuits malfunctioning or being destroyed.

In order to prevent the above problem, there is a method of covering the nut on the case A side into which the set screw 1 is screwed in with resin, but with this method, the part covered with the nand protrudes inside the case, so there is no space for storing electronic components. As a result, case a has to be made larger, which poses problems such as hindering miniaturization of the housing.

The present invention is intended to solve the above-mentioned conventional problems, and it is an object of the present invention to provide a housing structure for an electronic device that allows a cover to be fixed to a case without using set screws. be.

Means for Solving the Problems In order to achieve the above object, the present invention includes a case that houses an electronic component unit, a case that is open on one side, a main cover that covers the opening of the case, and a battery housing that covers the case. One end of the main cover is locked by sliding the main cover with respect to the case and engaging the protrusion of the main cover with a groove provided in the case, and the main cover The slide of the main case is locked by pressing the locking part provided on the other end into the notch on the case side, and the protrusion of the sub cover is inserted into the groove of the case by sliding the sub cover against the case. By engaging the sub-cover, the sub-cover is engaged with the case, and at the same time, by engaging the main cover and the sub-cover, the slide of the sub-cover is locked.

According to the above-described structure, the main cover attached to the case is prevented from sliding by the sub-cover covering the battery accommodating portion, and the sub-cover is prevented from sliding by engaging with the main cover. The main cover and sub-cover can be attached to the case without using set screws, which improves the external appearance and prevents static electricity from entering the inside of the case due to charging of the set screws. In addition, the main cover cannot be removed from the case unless the sub-cover is removed, so the sub-cover is used as a battery cover by attaching it to the case. Even if a large torsional force is applied to the case in this state, it is possible to reliably prevent the main cover and the sub force bar from coming off from the case.

Embodiment An embodiment of the present invention will be described in detail with reference to the drawings shown in FIGS. 1 to 8. In the figure, 1 is a casing used for electronic equipment, which includes a flat case 2 with an opening on one side, a main cover 3 fitted into the opening of this case 2, and the case 2.
It consists of a sub-cover 5 that covers a battery accommodating section 4 provided inside.

The case 2 is provided with an end plate 2a at one end, and the end plate 2a is formed in a shape that does not create a step between the main cover 3 and the main cover 3 when the main cover 3 is fitted into the opening of the case 2. At the same time, an electronic component unit 7 is inserted into the case 2 from the tip side so that the antenna 6 is located inside the end plate 2a.

The battery component unit 7 consists of a printed circuit board 8 to which electronic components (not shown) are attached, the antenna 6 and the battery case 9, and is assembled into a box shape large enough to be accommodated in the case 2. The case 9 is housed in the case 2 so as to be located in the battery housing section 4 in the case 2.

In addition, fitting portions 2b into which the main cover 3 and sub-cover 5 fit are provided in the opening of the case 2 in a protruding manner on three sides excluding the end where the end plate 2a is formed.

The fitting portion 2b is one step lower than the outer surface of the case 2, and the protrusion 3a of the main cover '3 engages with the outer surface of the fitting portion 2b provided on both sides of the case 2. A plurality of protrusions 2C and a protrusion 2 that engages with the protrusion 5a of the sub-cover 5
d protrudes, and a recess 2e into which a protrusion 5d provided on the sub-cover 5 is fitted is formed on the outer surface of the fitting portion 2b provided at the end of the case 2. .

On the other hand, the inner surface of the main cover 3 has a fitting part 2 of the case 2.
A protrusion 3a that can be inserted into a groove 2g formed between the protrusion 2C and the stepped portion 2f that protrudes from b, and a groove 3b into which the protrusion 2C fits are formed.

The protrusions 3a are formed at intervals such that they can be inserted from above (in the direction of arrow A in FIG. 2) between the protrusions 2c protruding from the fitting portion 2b, so that the case 2 can be fitted from the direction of arrow A. By fitting the opening of the main cover 3 into the portion 2b and sliding the main cover 3 in the direction of the end plate 2a of the case 2 (in the direction of the arrow), the protrusion 2c of the case 2 fits into the groove of the main cover 3. In 3b,
The protrusions 3a of the main cover 3 fit into the grooves 2g of the case 2, so that one end of the main cover 3 can be locked to the case 2.

Furthermore, a locking portion 3C as shown in FIG. 4 is formed on the inner surface of the other end of the main cover 3. As shown in FIG.

”2 The locking portion 3c connects the main cover 3 to the end plate 2 of the case 2.
Slide the end face of the main cover 3 in the direction a to the end plate 2a.
It is formed at a position that matches the notch 2h formed in the fitting part 2b when brought into contact with the case 2,
is attached, press section A of the main cover 3 shown in FIG. At the same time that the other end of the main cover 3 is fixed, the main cover 3
is designed to prevent it from sliding in the direction opposite to the arrow opening.

When the main cover 3 is attached to the case 2 as described above, the guide portion 3e protruding from the inside of the main cover 3 comes into contact with the inside of the case 2 as shown in FIG. When a large torsional force is applied in the width direction of the body 1, this is received, and the main cover 3 is prevented from coming off from the case 2 due to the torsional force.

In the above embodiment, the protrusion 2C protruding from the fitting part 2b is divided into multiple parts, but this is done by reducing the sliding distance of the main cover 3 when attaching the main cover 3 to the case 2, thereby reducing the number of assembly steps. Of course, the cover 3 may be attached to the case 2 by making the protrusion 2c a long integral structure and sliding the main cover 3 only in the direction of the arrow.

On the other hand, the sub-cover 5 that covers the battery housing section 4 of the case 2 is
It is formed shorter in length than the main cover 3, and has protrusions 5a and grooves 5b similar to the main cover 3 formed on the inner surface.

When the sub-cover 5 is slid from one end side of the case 2 in the two directions of the arrows, the protrusion 5a of the case 2
A protrusion 2d protruding from the fitting portion 2b is fitted into the groove 21 formed between the step portion 2f and the step portion 2f, and into the groove 5b. A locking recess 5C is formed at one end, into which a locking convex portion 3f protruding from the main cover 3 is fitted from above when the end is brought into contact with the end of the main cover 3.

Further, on the other end side of the sub-cover 5, a fitting portion 2 of the case 2 is provided.
A protruding portion 5d is provided to fit into the recessed hole 2e formed in b.

Next, the operation of the housing 1 configured as described above will be explained. When storing a battery in the battery case 9, the area near point B of the sub cover 5 is pressed and the engagement convex portion 3f of the main cover 3 is pressed. The battery can be easily accommodated in the battery case 9 by removing the engagement recess 5C of the subcover 5, and in this state, sliding the subcover 5 in the direction opposite to arrow 2 to remove the subcover 5 from the case 2.

Also, when removing the main cover 3 for repairs or inspection, etc.,
As shown in FIG. 3, a T-shaped special tool 10 having three teeth 10a at the tip is inserted from the tooth tip side to the bottom of the end of the main cover 3, and using the principle of leverage, the end of the main cover 3 is push up the section.

As a result, the locking part 3c comes off from the fitting part 2b and the main cover 3 becomes free to slide.In this state, by sliding the main cover 3 in the direction opposite to the arrow opening, The main cover 3 can be removed, and the locking force of the locking part 3C can be set arbitrarily by changing the angle θ of the slope 2j formed in the notch 2h and the length l of the press-fitting part 2. be able to.

By removing the sub cover 5 and the main cover 5 from the case 2 as described above, the electronic component unit 7 can be taken out from inside the case 2. Also, when installing the electronic component unit 7 into the case 2 again, the above You can do the opposite operation.

In the above embodiment, the casing 1 is formed into a flat box shape, but the same structure can be implemented with a flat cylindrical casing as shown in FIG.

Effects of the Invention As described in detail above, the present invention provides a housing for accommodating an electronic component unit, consisting of a case with an opening on one side, a main cover that covers the opening of the case, and a sub-cover that covers the battery accommodating section. Then, by sliding the main cover relative to the case and engaging the protrusion of the main cover with the groove provided in the case, one end of the main cover is locked, and the other end of the main cover is locked. By press-fitting the provided locking part into the notch on the case side, the slide of the main case is locked, and by sliding the sub-cover with respect to the case and engaging the protrusion of the sub-cover with the groove of the case. By locking the sub-cover to the case and simultaneously engaging the main cover and the sub-cover, the slide of the sub-cover is locked.

Therefore, the main cover attached to the case is prevented from sliding by the sub-cover that covers the battery compartment, and the sub-cover is prevented from sliding by engaging with the main cover, so it does not stop with respect to the case. The main cover and sub cover can be attached without using screws, which improves the appearance and also
Eliminates static electricity from entering the interior of the housing due to charging of set screws, preventing malfunction and destruction of electrical components.
Furthermore, since the main cover cannot be removed from the case unless the sub-cover is removed, even if a large torsional force is applied to the case while the sub-cover is attached to the case as a battery cover, the main cover cannot be removed from the case. It is possible to reliably prevent the main cover and sub-cover from coming off.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the housing structure of an electronic device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the same, FIG. 3 is a perspective view with the sub-cover removed, and FIG. 4 is an enlarged view of the area in the circle in Figure 3, Figure 5 is a cross-sectional view taken along the line V-V in Figure 1, Figure 6 is a cross-sectional view taken along the line ■-■ in Figure 1, and Figure 7. is a cross-sectional view taken along the line ■-■ in FIG. 1, FIG. 8 is a cross-sectional view taken along the line ■-■ in FIG. 1, FIG. 9 is an explanatory diagram showing another embodiment, and FIG. FIG. 2 is a perspective view showing the casing structure of a conventional electronic device. DESCRIPTION OF SYMBOLS 1... Housing, 2... Case, 2g, 2i... Concave groove, 2h... Notch, 3... Main cover, 3a... Projection, 3c... Locking part , 4... battery housing section, 5...
Sub-cover, 5a...Protrusion, 7...Electronic component unit. Name of agent: Patent attorney Akira Okaji and two others (Notr'p
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Claims (1)

[Claims] The housing for accommodating the electronic component unit is composed of a case with one side open, a main cover that covers the opening of the case, and a sub-cover that covers the battery compartment, and the main cover is slidable with respect to the case. , one end of the main cover is locked by engaging the protrusion of the main cover with the groove provided in the case, and the locking part provided on the other end of the main cover is press-fitted into the notch on the case side. This locks the slide of the main case, and at the same time locks the sub-cover with the case by sliding the sub-cover with respect to the case and engaging the protrusions of the sub-cover with the grooves of the case. , a housing structure for an electronic device in which the slide of the sub-cover is locked by engaging the main cover and the sub-cover.