JPH06112680A - Shielding structure and manufacture thereof - Google Patents

Abstract

PURPOSE:To make an accurate contact of contact members by curling one end of contact members of one shielding board and by bending an end of the other shielding board (reception board) in the shape of L. CONSTITUTION:A group of contact members 7 are not bent at right angles but are bent a little wider opened upwards (X>90 deg.). An end of the group of contact members 7 is curled. Because of this reason, when a shielding board (reception board) 6 is pushed against the contact members 7 from above, the contact members 7 are brought into contact with the L-shaped bent part of the shielding board (reception board) 6. At that time, the group of contact members 7 are brought into contact with both a flat part and the L-shaped bent part of the shielding board (reception board) 6 or with either the shielding face 6a or the cross face 6b and therefore a shielding effect can be obtained stably. Even if the contact sections are not uniform, the contact members can be accurately brought into contact with at least one of the shielding face 6a and the cross face 6b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a word processor requiring a shield, a document processing device such as a personal computer, a laptop electronic device, or a shield structure used for an accessory of the electronic device. is there.

[0002]

2. Description of the Related Art In the conventional shield structure of this type, a sheet metal is punched out to make a large number of contacts, and the contacts are bent into an L-shape to form one shield plate and the other shield plate. Although the shield effect was obtained by making multiple points contact, the shield effect sometimes became unstable depending on the state of the contactor. FIG. 9 is a schematic exploded enlarged view showing a conventional shielding method, in which the shield plate 5 and the receiving plate 6 are in contact with each other by a contact group 7.

Next, the contact portion of the shield plate will be described. Although the shield plate 5 and the receiving plate 6 are in contact with each other by the contact group 7, as shown in FIG. 10, when the contact group 7 is made of a material having no spring property, the contact group 7 is used for assembling. If the contact portion of the group 7 is deformed, one or more of the contactor groups 7 that should be in contact with each other will not be in contact with each other, and the effect as a shield will be not so good.

[0004]

The conventional shield plate is
It is necessary to contact the upper and lower shield plates at multiple points in order to improve the shield effect, and for that reason, it was necessary to use a plate material having a spring property for the contact portion.
If a plate material having a spring property is not used, the contact between the upper and lower shield plates becomes unstable, and the shielding effect cannot be obtained very well.

The present invention has been made to solve the above problems, and an object thereof is to obtain a shield structure capable of improving the contact state of the shield plate and using a cheap plate material in terms of cost. In addition, it is an object of the present invention to provide a manufacturing method suitable for this shield structure.

[0006]

In the shield structure according to the present invention, one end of one contact of the shield plate is curled and the other shield plate (receiving plate) is bent into an L shape. By making the contacts come into contact with each other, the number of contact points of the contact portion is increased and the contact is surely brought into contact.

Further, in the method for manufacturing a shield structure according to the present invention, a step of punching one shield plate into the shape of a contactor to form a contactor, a bending step of curling the tip portion of the contactor, The shield structure is manufactured by the receiving portion forming step of bending the portion of the other shield plate that receives the contact into an L shape.

[0008]

In the shield structure according to the present invention, the curl-shaped contact group of one shield plate is held by the L-shaped portion of the other shield plate (receiving plate), and Therefore, it is possible to increase the number of contact points required.

Further, according to the manufacturing method of the present invention, the shield plate is punched out of a sheet metal, and the contact portion to be contacted is bent into a curl shape, and the contact portion is bent into an L shape. The shield structure can be easily created.

[0010]

EXAMPLES Example 1. Hereinafter, a diagram of an embodiment of the present invention will be described. FIG. 1 is an exploded perspective view schematically showing a laptop electronic device. FIG. 2 shows A of FIG.
It is an expansion disassembled perspective view about a part. In FIG. 1, 1
Is an electronic device device, 2 is a device body, 3 is an electronic component of a noise source, 4 is a system board having the electronic component 3 of a noise source, 5 and 6 are shield plates arranged vertically, and a contact group 7 to make contact. 6a is a shield surface, and 6b is an intersecting surface orthogonal to the shield surface 6a. 8 is a keyboard, and a shield plate (support plate) 6
Is pressed against the contact group of the shield plate 5 and fixed to the main body. A liquid crystal display device 9 is formed so as to cover the entire surface of the keyboard 8 in a closed state. 1
Reference numeral 0 is a display portion, and 11 is a carrying handle capable of carrying the main body 1 in a pulled-out state. 12 is a printer.

In FIG. 2, the contact group 7 of the shield plate 5 is shown.
Is not bent vertically, but is bent so that the upper side is slightly open (×> 90 °). In addition, since the tip of the contact group 7 is bent into a curl shape, when the shield plate (receiving plate) 6 is pressed from above, the contact group 7 is flexed so as to open outward as shown in FIG. The shield plate (receiving plate) 6 contacts the L-shaped bent portion. At this time, as shown in FIG. 4, the contact group 7 contacts the upper flat surface of the shield plate (receiving plate) 6 with both sides of the L-shaped curved surface, or as shown in FIG. Since the contactor group 7 will surely come into contact with either the shield surface 6a or the intersecting surface 6b in either the first direction or the second direction, it is expected that the shield effect can be stably obtained. Further, as shown in FIG. 6, even if the contact portions of the contacts 7 are uneven, at least one of the shield surface 6a and the intersecting surface 6b is surely contacted as shown in FIG. The screw 1 in FIG.
In 3, a part of the shield plate is fastened together with the ground part of the system board so as to be electrically sandwiched.

As described above, according to this embodiment, in the laptop electronic device having the system board on which the circuit parts which are the noise generating sources are mounted on the equipment housing, both sides of the system board are provided inside the housing. , A pair of electromagnetic wave shield plates 5 and 6 arranged so as to sandwich the system board
The shield plate 5 is formed of a plurality of flexible contactors 7 and a receiving portion for receiving the contactors formed on the shield plate 6 is provided corresponding to the contactors 7. In the combined state of the shield plates 5 and 6, the contact has a contact direction with the receiving portion in two directions of the first and second directions, and in the combined state, at least one of the above first and second directions. It is characterized by making contact with one side. Further, in particular, in the combined state of the shield plates 5 and 6, the contact of the shield plate 5 is a curled portion, and the receiving portion of the shield plate 6 is an L-shaped portion. It is characterized in that the curled portions are arranged correspondingly in the corners.

Example 2. It should be noted that in the above embodiment, the contact group 7 processed on the shield plate 5 is provided with a curled shape, but the shape of the contact group 7 processed on the shield plate 5 is ∧. It may be formed in a letter shape or a key shape. That is, as shown in FIG. 7, the shield plates 5,
In the combined state of 6, the contact of the shield plate 5 has a ∧-shaped portion, and the receiving portion of the shield plate 6 has an L-shaped portion. The ∧-shaped portions are arranged correspondingly within the corners of the L-shaped portions, and the contacting portions are contacted on both sides of the shield surface 6a and the intersecting surface 6b, or when one of them is contacted. The same effect as the embodiment is obtained.

Example 3. As shown in FIG. 8, the shape of the shield plate (receiving plate) 6 that comes into contact with the contact group 7 formed on the shield plate 5 of the above-described first and second embodiments is convex. That is, in the combined state of the shield plates 5 and 6, the contact portion of the shield plate 5 and the contact portion of the shield plate (receiving plate) 6 are in a convex shape,
It is characterized in that the contact groups are arranged so as to be housed in the corners. According to this embodiment, the strength of the shield plate (receiving plate) 6 can be increased and the same effect as that of the above embodiment can be obtained.

Example 4. Although the shield structure of the system board has been described in the above embodiment, the same effect as that of the above embodiment can be achieved with respect to the shield of the accessory of the electronic device device in which the component of the noise source is housed.

[0016]

As described above, according to the present invention, the shape of the contact portion of the shield body is bent to form another shield body.
By making contact with each other at a place, the device can be made inexpensive and a device having a good shield effect can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic exploded perspective view of a laptop electronic device according to a first embodiment of the present invention.

FIG. 2 is an enlarged exploded perspective view of a portion A shown in FIG. 1 of the present invention.

FIG. 3 is a detailed view of a contact portion of the present invention.

FIG. 4 is a sectional view of a portion A shown in FIG. 1 of the present invention.

FIG. 5 is a detailed view of the contact method of the present invention.

FIG. 6 is an enlarged view of a contact group of the present invention.

FIG. 7 is a detailed view of a contact portion of a contact group showing a second embodiment of the present invention.

FIG. 8 is a diagram of a shield plate (receiving plate) shown in a third embodiment.

FIG. 9 is an enlarged exploded perspective view of a conventional shield system.

FIG. 10 is an operation principle diagram of a conventional contactor.

[Explanation of symbols]

 1 Laptop type electronic device storage 2 Device body 3 Electronic components that are noise sources 4 System board 5 Shield plate 6 Shield plate (receiving plate) 7 Contact group 8 Keyboard 9 Liquid crystal display device 10 Display section 11 Carrying handle 12 Printer 13 Fixing screw

Claims (4)

[Claims] 1. A shield structure having the following elements: (a) a first shield body having a shield surface, and having an intersecting surface intersecting with the shield surface at an end of the shield surface, (b) the first shield body. A second shield body having a contact portion capable of contacting at least one of the shield surface and the intersecting surface. 2. The shield structure according to claim 2, wherein the contact portion of the second shield body has a bending portion bent so as to come into contact with the shield surface and the intersecting surface of the first shield body. The shield structure according to claim 1. 3. The shield surface and the intersecting surface of the first shield body form an L-shape or a convex shape in the cross-sectional direction, and the contact portion of the second shield body has a curl-shaped portion or a key-shaped portion. The shield structure according to claim 1, which has. 4. A method of manufacturing a shield structure using two shield bodies, comprising: (a) a contact portion forming step of forming a contact portion on one shield body; b) a bending step of bending the end of the contact portion, (c) a receiving portion forming step of bending the end of the other shield body to form a receiving portion for contacting the contact portion.