JP2904952B2 - Connection structure of conductive members - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure of a conductive member used for shielding, for example, an electronic component or the like from an electromagnetic wave or for preventing an electromagnetic wave from leaking from a room to the outside.

[0002]

2. Description of the Related Art In recent years, various devices using electronic components such as microcomputers, for example, office machines such as electronic typewriters and printers, and household electric appliances such as washing machines and vacuum cleaners have rapidly spread. The number of microcomputers used has also increased, and the clock frequency has been increasing.

However, in order to increase the frequency, electromagnetic wave noise generated by electronic components and the like is radiated from gaps in a housing for accommodating each electronic component or a room in which the electronic components are arranged, and is transmitted to peripheral signal lines. Glue or external electromagnetic waves may act directly on electronic components, causing malfunctions or malfunctions of the electronic components.

Further, the magnetic recording element of the electronic component is obtained by magnetizing a magnetic material at a high density with a small magnetic energy. There is.

[0005] In order to prevent such interference by electromagnetic waves, conventionally, a plate member provided with a conductive layer made of a highly conductive metal is stuck on the surface of a room wall or placed around the housing. I was

[0006]

However, when electromagnetic waves are shielded by using the above-mentioned plate material,
There was a problem that the shield at the part connecting the plate members was not sufficient. In other words, there is a problem that a certain gap is inevitably formed between the plate members, and electromagnetic waves leak from the gap.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. For example, in order to suitably shield electromagnetic waves affecting electronic components, a connection structure of a conductive member capable of securing a firm conduction is provided. The purpose is to provide.

[0008]

That is, the present invention, which has been made to achieve the above-mentioned object, comprises a plurality of plate-like or sheet-like conductive members having a conductive layer formed on a surface thereof. conductive layer is a connection structure arranged as to be in the same plane, conduction both said conductive member to the side end portions of the two conductive members
In together when placed in close proximity to the surface of the layer aligned, shielding tape forming a conductive layer to a small Do <br/> Kutomo one surface
The conductive layer of the shield tape and the conductive
Use a conductive adhesive so that the layers are electrically connected.
The connection structure of the conductive member is characterized in that it is attached and connected at the boundary between the two side ends .

According to a second aspect of the present invention, a plurality of plate-like or sheet-like conductive members having a conductive layer formed on the surface are arranged such that each conductive layer of the conductive members is substantially on the same plane. A connection structure, wherein the end of the one conductive member is bent outward and extends substantially parallel to the surface of the conductive member, and the inner surface of the step and the end of the other conductive member are provided. And a shielding tape provided with a conductive layer in the gap between the step and the other conductive member.
And the shield tape and the two conductive members are sealed with the shield.
The conductive layer of the shield tape and the conductive layers of both conductive members are electrically connected.
Bonding using a conductive adhesive
A gist is a connection structure of a conductive member characterized by being connected together .

Further, according to a third aspect of the present invention, a plurality of plate-like or sheet-like conductive members having a conductive layer formed on the surface are arranged such that each conductive layer of the conductive members is substantially on the same plane. A connection structure, wherein the end of the one conductive member is bent outward and extends substantially parallel to the surface of the conductive member, and the inner surface of the step and the end of the other conductive member are provided. The stepped part and the other conductive part
Make sure that the conductive layers of the members are electrically connected to each other.
The invention further provides a connection structure of a conductive member, characterized in that the connection structure is bonded by using a conductive adhesive .

Here, examples of the conductive member include a member for shielding electromagnetic waves and a member for countermeasures against static electricity. The structure of these members is, for example, a plate-like member having elasticity or a flexible sheet. Shaped members are conceivable.

This conductive member comprises a base material (core material) of the member and a conductive layer formed on the surface thereof. And as the material of the base material, plastic, rubber, wood,
There are paper, cloth, metal, etc., and the material of the conductive layer is
A highly conductive metal such as copper is conceivable. As a method for forming the conductive layer, vapor deposition, thermal spraying, plating, or the like can be adopted, and the thickness of the conductive layer is, for example, 0.5 to 50 μm.

As the conductive adhesive, an adhesive having low electric conductivity (10 ^-2 to 10 ^-3 Ω · m) containing silver powder or the like as a conductive filler together with a binder can be used.

[0014]

According to the first aspect of the present invention, the conductive layers of the conductive members are aligned in the same direction, and a tape on which the conductive layer is formed is attached and connected at the boundary. Since this connection uses a conductive adhesive, the electrical connection between the two conductive members is performed.
For example, the absorption and reflection of electromagnetic waves are sufficiently performed, and the performance and the like of the electromagnetic wave shield of the entire conductive member as well as the boundary are improved.

According to the second aspect of the present invention, a step is formed at an end of one of the conductive members, and the step is overlapped with the other conductive member. In the case where the members are overlapped, a tape is arranged in a gap between the two members and connected using a conductive adhesive. As a result, the two conductive members are electrically connected and overlapped with each other, so that the mechanical and electrical connections between the two members are sufficiently performed.

Further, according to the third aspect of the present invention, a step is formed at an end of one of the conductive members, and the step is overlapped with the other conductive member. When the members are overlapped, they are connected to each other using a conductive adhesive in a gap between the two members. As a result, the two conductive members are electrically connected and overlapped with each other, so that the mechanical and electrical connections between the two members are sufficiently performed.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As an embodiment of the present invention, a connection structure of an electromagnetic wave shielding member will be described below with reference to the drawings.

FIG. 1 shows, as a first embodiment, a connection structure of a plate 1 which is a member for shielding electromagnetic waves. As shown in the figure, a plate material 1 is a member having a core material 2 made of, for example, synthetic resin, synthetic paper, paper or wood, and one surface of the core material 2 is formed by vapor deposition, thermal spraying, plating or the like. Copper conductive layer 3
Are formed.

When connecting the plate 1,
The plate material 1 is arranged close to the end so as to be in contact with the end of the plate material 1, and a conductive adhesive forming the fixing layer 5 is used along the adjacent portion (boundary) 4 so as to cover the boundary 4 so as to cover the boundary 4. Attach the tape 6. At this time, the shielding tape 6 may be similarly attached to the back side of the boundary 4.

The shielding tape 6 is a flexible member, and is formed by forming a copper conductive layer 8 similar to the plate 1 on both sides of a tape-shaped core 7 made of a synthetic resin such as vinyl chloride. It is.

The conductive adhesive is, for example, silver powder or the like.
Epoxy resin based on metal powder as conductive filler
And it is made into a paste with a solvent.
10 ^-2-10^-3It is about Ω · m. This conductive adhesive
Indicates that the cured product exhibits conductivity and adheres to adherends.
Curing method is room temperature curing type, heat curing type
and so on.

When the conductive adhesive is used, the adhesive is applied to the boundary 4 of the plate material 1, then the shielding tape 6 is applied and dried. Alternatively, a conductive adhesive adjusted to a certain viscosity in advance is applied to the shielding tape 6.
May be applied to the surface of the conductive layer 8 to form an adhesive layer having an adhesive force, and the plate material 1 may be connected by the adhesive layer.

By employing the above-described connection structure, it is possible to easily and reliably perform the electromagnetic wave shielding simply by arranging the plate members 1 adjacent to each other and affixing the shielding tape 6 so as to cover the boundary 4. it can.

Next, a second embodiment will be described. In this embodiment, unlike the above embodiment, the end of the plate 10 is slightly bent outward. That is, only one end of the plate member 10 is slightly shifted outward to approximately the thickness of the plate member and protruded, and further extended in the extension direction of the plate member 10 to form the step portion 11.

The conductive layer 1 made of copper is provided on the plate 10 so as to cover the outer surface of the plate 10 and the periphery of the step portion 11.
2 and a similar conductive layer 14 is formed on one surface of the other plate 13.

A shield tape 15 is used to connect the two plate members 10 and 13, and a core 16 of the shield tape 15 is made of a thin metal tape made of a conductive metal such as copper. And the core material 1
On both sides of 6, an adhesive layer 17 made of a conductive adhesive having an appropriate viscosity is formed.

The other plate material 1 is provided inside the step 11.
3 and the gap 1 between the step 11 and the other plate 13
8 using the shielding tape 15 arranged on
0 and 13 are connected. That is, when connecting the plate members 10 and 13 using the shield tape 15, first, the seal (not shown) attached to the surface of the adhesive layer 17 is peeled off, and the shield tape 15 is connected to the stepped portion. 1
The other plate material 13 is laminated so as to be stuck along the inner side surface 11a of the first member 1 and further sandwich the stuck tape 15 for pasting.

As a result, the two plates 10 and 13 are connected, and the conductive layers 12 and 1 of the two plates 10 and 13 are connected.
4 are connected to complete the electromagnetic wave shield. Next, a third embodiment will be described. In this embodiment, a one-sided seal is used.

As shown in FIG. 3, the plate member 20 has the second
As in the embodiment, a bent step portion 21 is provided, and an inner surface 21a of the step portion 21 is provided with a shielding tape 2 in advance.
2 is pasted.

That is, the core material 23 of the shielding tape 22
Is made of conductive copper, and the shielding tape 22 is firmly bonded by a fixing layer 24 made of a conductive adhesive applied to the inner surface 21a of the step portion 21 in advance. On the other hand, on the other surface of the shielding tape 22, an adhesive layer 25 having a predetermined adhesive strength and having conductivity is provided.
A seal 26 is formed to cover the adhesive layer 25. The sticking layer 24 and the adhesive layer 25 have different viscosities, and the seal 26 covering the adhesive layer 25 can be easily peeled off.

Therefore, when connecting the plate members 20, first, the seal 26 is peeled off to expose the adhesive layer 25, and the adhesive layer 25 and the end of the other plate member 27 are overlapped, pressed and attached.

Thus, there is an advantage that the plate members 20 and 27 can be connected very easily only by peeling off the seal 26. Next, a fourth embodiment will be described. In this embodiment, the two plate members 30, 31 are connected using only a conductive adhesive.

As shown in FIG. 4, the plate 30 has the second
As in the embodiment, a bent step portion 33 is formed. The end of the other plate 31 is connected to the inner surface 33a of the step 33 by a fixing layer 32 made of a conductive adhesive.

That is, a conductive adhesive is applied to the inner side surface 33a of the step portion 33, and the other plate material 31 is pressed by sandwiching the applied conductive adhesive, thereby connecting the two plate materials 30, 31 to each other. It is connected while maintaining the nature.

Therefore, in the case of the present embodiment, since no tape is used for the connecting portion, there is an advantage that the operation can be simplified and the connecting portion can be made thin. Next, a fifth embodiment will be described.

As shown in FIG. 5, when the plate members 40, 41 have a certain thickness, a convex portion 42 and a concave portion 43, which can be fitted respectively, are formed at the side ends where the plate members 40, 41 are connected. The projection 42 and the depression 43 are fitted to each other to
0, 41 can be connected. Note that a shielding tape may be attached to the fitting end face, or a conductive adhesive may be applied.

Accordingly, in the case of the present embodiment, both the plate members 40,
There is an advantage that the fixing member 41 can be firmly fixed and the electromagnetic wave can be reliably prevented from leaking from the gap between the joints. Next, a sixth embodiment will be described.

As shown in FIG. 6 (a), a large number of convex portions 52, 53 and concave portions 54, 55 to be fitted to each other are provided in a row at the joined ends of the plate members 50, 51. Moreover, the projections 52 and 53 and the recesses 54 and 55
The side surface is formed obliquely as shown in FIG.

Therefore, in the case of the present embodiment, both the plate members 50,
There is an advantage that the electromagnetic wave 51 can be securely fixed, and the leakage of the electromagnetic wave from the gap at the joint can be reliably prevented. Next, a seventh embodiment will be described.

As shown in FIG. 7, at the joined ends of the plate members 60, 61, convex portions 62, 63 having the shape of an Erlenmeyer flask to be fitted with each other and concave portions 64, 65 corresponding thereto having the same shape.
Are provided in a row. Moreover, the projections 62,
63 and the recesses 64 and 65 are formed in the same manner as in the sixth embodiment.
The side surface is formed obliquely.

Accordingly, in the case of the present embodiment, both the plate members 60,
There is an advantage that the fixing member 61 can be firmly fixed, and the leakage of the electromagnetic wave from the gap between the joint portions can be reliably prevented. Further, when a tension is applied to the two members 60 and 61 so as to pull them outward (directions of arrows C and D), the two members 60 and 61 are preferably difficult to separate.

Next, an eighth embodiment will be described. FIG.
As shown in (a), round-flask-shaped projections 72 and 73 fitted to each other are attached to the joined ends of the plate members 70 and 71.
A large number of recesses 74 and 75 having the same shape corresponding thereto are provided in a row. Moreover, the convex portions 72 and 73 and the concave portions 74 and 75 have oblique side surfaces as shown in the BB section in FIG.
6 are formed.

Therefore, in the case of the present embodiment, both the plate members 70,
There is an advantage that the electromagnetic wave can be securely prevented from leaking from the gap between the joints. Further, when tension is applied to the two members 70 and 71 so as to pull them outward (directions of arrows C and D), it is preferable because the two members 70 and 71 are difficult to separate.

Next, a ninth embodiment will be described. This embodiment is different from the eighth embodiment in that the convex portions 72 and 73 and the concave
75, a circular tip portion 81 of the convex portion 80 is made thin, as shown in FIGS. 9 (a) and 9 (b).
A projection 82 is provided below the projection 82. And FIG.
As shown in (c), the other plate members 8 correspond to the projections 80.
A locking recess 85 into which the projection 82 enters is formed in the recess 84 formed in the third portion 3.

Therefore, in the case of the present embodiment, both the plate members 83,
There is an advantage that the 86 can be fixed firmly and the electromagnetic wave can be reliably prevented from leaking from the gap at the joint. Further, when tension is applied to the two members 83 and 86 so as to pull them outward (directions of arrows C and D), it is preferable because the two members 83 and 86 are difficult to separate.

The present invention is not limited to the above-described embodiment, but can be implemented in various modes within the scope of the present invention. For example, it goes without saying that the present invention can be used not only for electromagnetic wave shielding but also for the purpose of measures against static electricity, grounding and the like.

[0047]

According to the first and second aspects of the present invention, a tape or a conductive adhesive having a conductive layer formed thereon is used, and a plate-like or sheet-like conductive member is arranged on substantially the same plane to simplify the present invention. Can be connected by simple work. In this connection structure,
Since the tape is arranged so as to cover the boundary of the conductive member to be connected or to close the gap, there is an advantage that electrical connectivity is improved.

According to the third aspect of the present invention, since the connection is performed using only the conductive adhesive, the operation is simple.
Moreover, there is an advantage that the connection portion can be made thin.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view showing a connection structure of plate materials according to a first embodiment.

FIG. 2 is a partially cutaway plan view showing a connection structure of plate materials according to a second embodiment.

FIG. 3 is a partially cutaway plan view showing a connection structure of plate materials according to a third embodiment.

FIG. 4 is a plan view showing a connection structure of plate members according to a fourth embodiment, partially cut away.

FIG. 5 is a partially cutaway plan view showing a connection structure of plate materials according to a fifth embodiment.

FIG. 6 is an explanatory view showing a connection structure of a plate material according to a sixth embodiment, partially cut away.

FIG. 7 is a partially cutaway plan view showing a plate material connection structure of a seventh embodiment.

FIG. 8 is an explanatory view showing a connection structure of a plate material according to an eighth embodiment, partially cut away.

FIG. 9 is an explanatory view showing a connection structure and a convex portion of a plate material according to a ninth embodiment, partially broken away.

[Explanation of symbols]

1,10,13,20,27,30,31,40,4
1,50,51,60,61,70,71,83,86
... plate material 3,8,12,14,17 ... conductive layer 4 ... boundary 6,15,22 ... shielding tape 11,21,21
33, 76 ... step

Claims (3)

(57) [Claims] 1. A plurality of plate-shaped or sheet-shaped conductive members each having a conductive layer formed on the surface, and each conductive layer of the conductive member is
A connection structure arranged as to be in the same plane, the side edge portions of said two conductive members of the conductive layer of both said conductive member
To together the surface is arranged close to to align, small crows and <br/> also shielding tape forming the conductive layer on one surface, the
The conductive layer of the shield tape and the conductive layers of the above both conductive members are
Use a conductive adhesive to make an electrical connection
A connection structure for a conductive member, wherein the connection structure is formed by attaching and connecting to the boundary between both side ends . 2. A connection structure in which a plurality of plate-shaped or sheet-shaped conductive members having a conductive layer formed on a surface are arranged such that each conductive layer of the conductive members is substantially on the same plane, An end of the one conductive member is bent outward and has a step extending substantially parallel to the surface of the conductive member, and the inner surface of the step and the surface of the end of the other conductive member are overlapped. And a shield tape provided with a conductive layer in the gap between the step and the other conductive member.
The shield tape and both conductive members,
So that the layer and the conductive layers of both conductive members are electrically connected.
A connection structure of a conductive member, wherein the connection structure is bonded by using a conductive adhesive . 3. A connection structure in which a plurality of plate-shaped or sheet-shaped conductive members having a conductive layer formed on the surface are arranged such that each conductive layer of the conductive members is substantially on the same plane, An end of the one conductive member is bent outward and has a step extending substantially parallel to the surface of the conductive member, and the inner surface of the step and the surface of the end of the other conductive member are overlapped. So that the step and the end of the other conductive member are
Conductive adhesive so that the other conductive layers are electrically connected.
A connection structure for a conductive member, wherein the connection structure is used and bonded together .