JPH02190794A - Box body - Google Patents

Abstract

PURPOSE: To prevent leakage of electromagnetic radiation by providing the end part of a first wall being bent along other part to define a cavity for grasping the arm part of a coupling member, and a second wall to be coupled with the first wall. CONSTITUTION: A protrusion 38 to be received in the opening 39 at the turnup part 12 of the lower part 11 of an upper housing member 10 is provided at the lower part of arm part 31 of a coupling member 30. The protrusion 38 assists to fix the member 30 to the member 10. The member 30 is made of a thin flexible metal having resiliency. The member 30 is positioned such that the upper part 21 of a lower housing member 20 is received between the arm parts 31, 32 of coupling member when the member 10 is combined with the member 20. Since the upper part 21 of member 20 advances into the member 30 and the arm part 32 is urged to the right while resisting against the resiliency, the members 30, 20 come into stabilized contact with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention comprises a pair of housing members whose respective walls are removably coupled to each other, and a housing member which is attached to a first wall of the walls and coupled to a second wall. The present invention relates to a casing for, for example, a personal computer, of the type consisting of a coupling member. Such a housing will be referred to below as a housing of the type mentioned above.

PRIOR ART AND ITS PROBLEMS Electrical current in electrical components generates electromagnetic radiation (EMR), which can affect other electrical products.

EMR causes radio noise and can also interfere with pacemakers, causing fatal harm to patients. Personal computers are widely used in daily life, but they also generate EMR.

Such a computer is housed in a case, but E
MRG, t lil leak. Accordingly, various means have been used to prevent EMR leakage from computer housings.

In reality, if the housing of an electrical appliance is a closed loop, the generated EMR will not leak. Typically, a computer case consists of a top case member and a top case member, with two areas where EMR can leak. - one is the back where many slots are provided for connectors of add-on cards, and the other is the junction of the upper and lower housing members.

One conventionally used method is to use an N-shaped or N-shaped steel plate as the connecting member. The N-type iron plate is melted at the ) part of the upper housing member. Since the upper housing member descends toward the lower housing member, the top of the lower housing is
It enters between the mold plate and the wall of the upper housing member. Usually N
A mold plate is coupled between the upper and lower housing members.

When the N-shaped plate is deformed by external forces, usually due to thermal stress from welding and improper installation of the upper housing member, there is no bond between the upper and lower housing plates.

The N-type plate also has a problem because the N-type plate is attached to the upper housing member by melting. Thermal stress caused by welding not only deforms the N-shaped plate, but also destroys the coating of the upper housing member, such as the vinyl coating commonly used for computer housing coatings.

Means for Solving the Problems According to the invention, a housing of the above type is provided, in which the coupling member is substantially U-shaped, and the end of the first wall grips one of the arms of the coupling member. the second wall is folded along the other portion of the first wall to define a cavity in which the second wall is positioned in the receiving slot defined between the arms of the coupling member; A casing is provided which is characterized in that it is coupled with a casing.

The present invention is particularly suitable as a housing for a computer such as a personal computer.

In one example of the invention, the coupling member is installed on the upper part of the upper housing member and has elasticity or flexibility to form a closed loop so as to be in continuous contact with the lower housing member. EMR that prevents EMR leakage at joints between housing members
Configure the barrier.

EXAMPLE An example of the casing according to the present invention will be described below with reference to the drawings.
This will be described in comparison with a conventional EMR barrier.

FIG. 1 shows an upper housing member 10° and a lower housing member 20° according to the prior art. and N welded to the lower part 11 of the upper member 10
The mold connection plate 15 is shown. When the housing members 10 and 20 are closed, the upper part 21 of the lower member is received in the gap between the arm 16 of the plate 15 and the upper housing member 10.

As can be seen from FIG. 1, when the N-shaped plate 15 is deformed due to thermal stress or external force, for example, the upper part 2 of the lower housing member 20
Poor contact with 1. Further, since the iron plate 15 has almost no flexibility, the N-shaped plate 15 and the wall 11 of the upper housing member 10
It is not easy to control the spacing. If the interval is too wide, the contact between the N-shaped plate 15 and the F section housing member will be poor. If the interval is too narrow, it will be difficult to attach the upper housing member 10 to the lower housing member.

FIGS. 2 to 5 show an embodiment of the housing according to the present invention. In this embodiment, the lower part 11 of the upper housing member 10 has a folded end 12 defining a cavity 13 . A generally U-shaped coupling member 30 forming an EMR barrier connects a pair of arms 31 and 32. Arm 31 is fixed within cavity 13.

Therefore, there is no need to weld the coupling member 30 to the upper housing member 10.

Therefore, the paint applied to the upper housing member is not damaged.

As shown most clearly in FIG. 4, the lower part of the arm 31 of the coupling member 30 is provided with a number of protrusions 38 which are received within openings 39 in the flap 12 of the lower part 11 of the upper housing member 10. It will be done. These protrusions 38 assist in securing the coupling member 30 to the upper housing member 10.

The coupling member 30 is made of a thin, flexible metal plate and has elasticity. The coupling member 30 connects the upper part 2 of the lower housing member 20 when the upper housing member 10 is combined with the lower housing member 20.
1 is positioned to be received between arms 31 and 32 of the coupling member.

As will be described later, the upper part 21 of the lower housing member 20 is connected to the connecting member 3.
0, the arm portion 32 resists its elasticity and moves into the third.
Since it is biased toward the right in FIGS. 4 and 5, the coupling member 30 and the lower housing member make stable contact.

As shown in FIGS. 2 and 3A, the coupling member 30 has an elongated shape, and the outermost portion of the arm 32 in the lateral direction has a portion that guides the upper portion 21 of the lower housing member 20 into the coupling member. It is bent outwardly to form a guide portion 37 which helps to do so.

As shown most clearly in FIG. 4, the arms 32 of the coupling member 30 are provided with a number of coupling bosses 34 that project into cavities 33 defined between the arms. The tip 35 of the coupling boss 34 is urged into the cavity 33 and the lower housing member 20
When inserting the upper part 21 into the cavity 33, the coupling boss 34 is rotated against the force so that it makes good and stable contact with the lower housing member. This is clearly shown in FIG. 5, which clearly shows that the upper part 21 of the lower housing member 20 contacts the coupling member 34 with the upper and lower housing members 10 and 20 in the closed position. Because the coupling member 30 is at such a position, electromagnetic radiation does not leak from the housing because the housing member provides an EMR barrier due to the continuous electrical loop formed through the coupling member.

Various modifications are possible to the configuration shown in the drawings. For example, it is also possible for a projection 38 to be provided on the part 12 of the upper housing part and placed in an opening at the lower end of the arm 31 of the coupling member.

To summarize the above, the electromagnetic radiation barrier 30 of a housing, especially for a personal computer, according to the present invention has one arm 31 fixed between the folded edge 12 of the upper housing member and the rest of the housing. It is formed from a generally U-shaped coupling member. The U-shaped coupling member is made of elastic metal and is connected to the lower housing member 2.
0 upper part 21 is formed between the arms of the coupling member 33
When inserted into the lower housing member 20 , the lower housing member 20 is coupled to the housing member to achieve continuous electrical contact between the coupling member 30 and the lower housing member 20 .

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a prior art arrangement; FIG. 2 is an EMR mounted in the lower part of the upper housing member in accordance with the present invention;
A perspective view showing a part of the casing having a barrier, FIG.
Side view seen from six directions in the figure, Figure 3A is B in Figure 2
4 is an enlarged view of the EMR barrier coupling member together with the upper housing member, and FIG. 5 is a view similar to FIG. 3 showing the housing member in the closed position. 10... Upper housing member, 11... Lower part of upper housing member, 12... Folded end, 13.33... Blank space,
15...Connecting plate, 16...Legs of the connecting plate, 20...
- Lower housing member, 2... Upper part of lower housing member, 30.
... Connecting member, 31.32... Arm part, 34... Joining boss, 35... Tip of joining boss, 37... Guide part,
38...Protrusion, 39...Opening. Patent applicant: Hiroshi M Electronics Authentication Co., Ltd.

Claims (6)

[Claims] (1) A casing consisting of a pair of casing members whose respective walls are removably connected to each other, and a connecting member attached to the first wall of the walls and connected to the second wall, where the connecting member is approximately U-shaped, an end of the first wall is folded along another portion of the first wall to define a cavity for gripping one of the arms of the coupling member, and the second wall is A housing that couples to the first wall when positioned in a receiving slot defined between the arms of the coupling member. 2. The housing according to claim 1, wherein the coupling member forms an electromagnetic radiation barrier. (3) A housing according to claim 1 or 2, characterized in that the receiving slot is provided with several electrically conductive contacts in contact with the second wall, the contacts connecting with the first wall. (4) The casing according to claim 3, wherein the contact is supported by a free arm of the coupling member. (5) Each lateral end of the free arm has a guide for assisting the movement of the second wall into the coupling member. Housing. (6) The one arm of the coupling member and the cavity are in the cavity,
Housing according to any one of the preceding claims, characterized in that it has a protrusion and a recess that cooperate to fix the coupling member. Claims 1 to 7, wherein a computer is installed inside the computer.
The casing described in any one of the following.