JPH0638299U - Shield structure for electronic device housing - Google Patents

Abstract

(57) [Summary] [Object] To provide a shield structure in a housing having a double-door structure, in which electromagnetic waves do not enter through the gaps formed on the left and right doors and the opening and closing order of the left and right doors is not limited. [Structure] A pair of doors 22 and 2 provided in the housing body 21
Among them, the door 23 is provided with a shield material 36 along the edge of the door 23 close to the door 22, and the door 22 is provided on the door 22.
3, a contact piece 38 is provided along the edge on the side close to 3, and the contact piece 38 is provided with a hinge 2 with a spring 40 between the door 2 and the door 2.
It is attached to 2. Further, the protrusion amount and the inclination of the contact piece 38 with respect to the door 22 are such that the contact piece 38 does not come into contact with the door 23 when the door 22 is opened and closed, and when the door 22 is closed, the housing is closed. Opening peripheral portion 21a of the main body 21
The contact piece 38 comes into contact with the contact piece 38, and the contact piece 38 contacts the opening peripheral portion 21a.
It has such a size that it can rotate in the direction along and come into contact with the shield material 36.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a shield structure of an electronic device housing having a double door.

[0002]

[Prior art]

 In general, there are two types of door structures for housing electronic devices, one is a single-door structure and the other is a left-right double-door structure.

As shown in FIG. 9, the case of the single-door structure has a structure in which the base end side of the single door 2 is rotatably attached to the case main body 1, and by closing the door 2. The opening of the housing body 1 can be closed with a single door 2. Therefore, even when the electronic device 3 such as a communication device that requires electromagnetic wave shielding is housed in the housing, the shield material 4 is attached to the peripheral portion of the back side of the door 2 over the entire circumference. As a result, the gap between the housing body 1 and the door 2 can be shielded, so that a good shielding effect can be obtained.

However, when installing this type of housing, a space corresponding to the width of the door is required in front of the main body of the housing in consideration of opening / closing of the door. Since the width becomes large, there is a problem that the installation space becomes very large. Therefore, in a place with a limited installation space such as a central office where various communication devices are centrally installed, it may not be possible to install this type of single-door structure as a space. It was

On the other hand, the left and right two-door structure has a structure in which the base ends of a pair of left and right doors 7 and 8 are rotatably attached to the housing body 6 as shown in FIG. The doors 7 and 8 close the opening of the housing body 6. With this structure, the width of the door is half that of a single door, so it can be installed in a narrow space where a single-door case cannot be installed.

However, since a gap is created between the left and right doors 7 and 8 in this case, even if the shield material 9 is attached to the peripheral portion on the back surface side of the doors 7 and 8 (or as shown in FIG. 10) (or Even if a shield material is attached to the case body 6 side so as to surround the opening), there is a problem that the electromagnetic waves that enter through the gap between the doors 7 and 8 cannot be blocked.

It is the case shown in FIGS. 11 and 12 that prevents the electromagnetic waves from entering between the left and right doors, which is the above-mentioned drawback.

In this case, the left door 11 is provided with a protruding portion 11a toward the right door 12, and when the left and right doors 11 and 12 are closed, the left and right doors 11 and 12 have the protruding portion 11a. Are overlapped with each other. Further, a shield material 14 is provided on the protruding portion 11a, and the shield material 14 is provided on the doors 11 and 12 so as to surround the opening of the housing body 6. It is electrically connected to the material 15.

In this structure, the gap between the left and right doors 11 and 12 is also filled with the shield material 14, so that electromagnetic waves do not enter through this gap, and therefore a good shield effect is obtained. be able to.

However, in this structure, when opening the door, it is necessary to open the right door 12 and then the left door 11, and when closing the door, it is necessary to close the left door 11 and then the right door 12. Since opening and closing the left and right doors requires a sequence of operations, opening and closing the doors becomes troublesome. If the opening and closing order of the doors is incorrect, the doors may be damaged, or in some cases, the doors may be damaged.

[0011]

[Problems to be solved by the device]

 As mentioned above, the conventional shield structure of the left and right double door structure (Guan Yin structure) has the problem that electromagnetic waves enter through the gaps created in the left and right doors. If the structure is designed to prevent the entry of electromagnetic waves, there is a problem that the operation sequence occurs when opening and closing the left and right doors.

The present invention has been made to solve such a conventional drawback, and in an enclosure of a double door structure, electromagnetic waves do not enter through the gaps generated in the left and right doors. It is an object of the present invention to provide a shield structure for an electronic device housing in which the opening and closing order of the doors is not limited.

[0013]

[Means for Solving the Problems]

 According to the present invention, a housing main body in which an electronic device is housed and a pair of left and right doors that cover the opening of the housing main body are provided, and the housing main body and the pair of doors surround the opening. In the shield structure of the electronic device housing case electrically connected by the first shield material, one door of the pair of doors is connected to the other of the pair of doors. A second shield material is provided along the edge of the side close to the door,

The other door is provided with conductivity by being along the edge portion on the side close to the one door and by being projected at a predetermined angle with respect to the other door. Is provided with a contact piece,

The contact piece is provided with a spring property on the base end side so that the contact piece can rotate from a position tilted by the predetermined angle to a position close to the other door.

The protrusion amount and the inclination of the contact piece with respect to the other door are such that the contact piece does not come into contact with the one door when the other door is opened and closed with the one door closed. The size is such that when the other door is closed, the contact piece comes into contact with the peripheral edge portion of the opening of the housing body, and the contact piece rotates in a direction along the peripheral edge portion of the opening, The size is such that it can contact the shield material.

[0017]

[Action]

 In the shield structure of the present invention, one door is provided with the second shield material along the edge of the side close to the other door, and the other door is close to the one door. The contact piece is provided along the edge of the other side, and the amount of protrusion and the inclination of the contact piece with respect to the other door are such that the contact piece comes into contact with one door when the other door is opened and closed. When the other door is closed, the contact piece comes into contact with the peripheral edge portion of the opening of the housing body, and this contact piece rotates in the direction along the peripheral edge portion of the opening, so that the second seal -Since the size is such that it can contact the rudder material, the two doors do not interfere with each other regardless of whether one door or the other door is opened and closed. The contact between the shield material and the contact piece prevents electromagnetic waves from entering the housing through the gap between the doors.

[0018]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS.

FIG. 1 is a sectional view of the housing with both doors closed, FIG. 2 is a perspective view of the housing, FIG. 3 is an enlarged view of a circle A in FIG. 2, and FIG. Fig. 5 is an exploded perspective view for explaining, Fig. 5 is an exploded perspective view of a hinge with a spring, Fig. 6 is a diagram for explaining an action of the hinge with a spring, and Fig. 7 is a diagram for explaining a relation between opening and closing of a door and a shield action. .

As shown in FIG. 2, the housing according to the present invention includes a housing body 21, a pair of left and right open doors 22 and 23 for covering an opening portion of the housing body 21, and the housing body 21. It is composed of a mounted base 24.

The housing body 21 is made of a conductive material, and the housing body 21 accommodates an electronic device 26 such as a communication device that requires a shield. Further, magnets 28 for holding the closed doors 22 and 23 in the housing body 21 are provided at the upper and lower edges of the opening of the housing body 21.

The pair of doors 22 and 23 are made of a conductive material, and the base ends of the pair of doors 22 and 23 are attached to the housing body 21 in a rotatable state via the door support plate 30. . Further, on the back side of the doors 22 and 23, a shield material (first shield material) 32 is provided on three sides facing the opening peripheral portion 21a of the housing body 21. Therefore, when the doors 22 and 23 are closed, the opening of the housing body 21 is surrounded by the shield material 32, and the gap between the housing body 21 and the doors 22 and 23 is the shield material 32. Filled with. A backing plate 34 for adsorbing to the magnet 28 on the housing body 21 side is attached to the back surface side of both doors 22 and 23.

On the other hand, on the back surface of the right door (one door) 23, the shield material (second shield) is provided along the edge portion on the side close to the left door (other door) 22. The shield material 36 is provided, and both ends of the shield material 36 are electrically connected to the shield material 32 provided on the door 23. Further, as shown in FIG. 3, a contact piece 38 made of a copper plate is provided on the rear surface of the left door 22 along the edge 22a on the side close to the right door 23, When the doors 22 and 23 are closed, the contact piece 38 is brought into contact with the shield material 36. The mounting structure of the contact piece 38 will be described mainly with reference to FIGS. 4 to 6.

The contact piece 38 is composed of a long plate having a substantially V-shaped cross section, and is attached to the edge 22 a of the door 22 via a hinge 40 with a spring.

As shown in FIGS. 5 and 6, the spring hinge 40 is composed of a pair of hinge plates 41, 42, a pin 43 and a spring 44. As shown in FIG. , 42 are formed by providing springs 44 at several places when assembling the hinge by inserting the holes into the holes. The spring 44 urges the hinge plates 41 and 42 in the direction of the arrow shown in FIG. 6, and the pair of hinge plates 41 and 42 are positioned substantially orthogonal to each other when no external force acts.

As shown in FIG. 4, the hinge 40 with a spring is attached to the door 22 by fixing one hinge plate 41 to the edge portion 22 a of the door 22 with a screw 46. The contact piece 38 is fixed to the other hinge plate 42 with a screw 49 with a spacer 48 for height adjustment interposed therebetween. Therefore, when no external force is applied to the contact piece 38, the contact piece 38 is positioned at an angle θ with respect to the door 22 as shown in FIG. 7A. The inclination angle θ of the contact piece 38 rotates in the direction of closing the door 22, and when the tip of the contact piece 38 comes into contact with the opening peripheral edge 21a of the housing body 21, the pressure of the opening peripheral edge 21a is increased. Thus, the angle θ is small enough to rotate in the direction (that is, the contact piece 38 projects from the door 22 toward the door 23). The amount of protrusion of the contact piece 38 from the door 22 is such that when the contact piece 38 is tilted by the angle θ, the contact piece 38 is opened and closed when the door 22 is opened and closed as shown in FIG. When the contact piece 38 is in the position shown in FIG. 7 (b) without the tip of the contacting member 23 coming into contact with the door 23, the contact member 38 can contact the shield member 36. The spacer 48, the hinge 40, etc. are made of a conductive material, and the contact piece 38 is electrically connected to the door 22 via these.

Next, the operation and effect of the above structure will be described with reference to FIG.

As shown in FIG. 7A, when the contact piece 38 is not in contact with the opening peripheral portion 21 a, the inclination angle of the contact piece 38 with respect to the door 22 is θ, and the door 23 is closed. Even if the door 22 is opened and closed in this state, the contact piece 38 does not come into contact with the door 23. Therefore, when opening and closing the doors 22 and 23, the order of opening and closing the doors is not limited.

On the other hand, when the door 22 is rotated in the closing direction while the door 23 is closed, the tip of the contact piece 38 comes into contact with the opening peripheral portion 21a, and when the door 22 is further rotated, the opening peripheral portion 21a is closed. The pressure causes the contact piece 38 to rotate about the pin 43 in the direction along the peripheral edge 21a of the opening, and when the door 22 is closed, the contact piece 38 is in contact with the shield member 36 (FIG. 7 (a)). )). Therefore, the electromagnetic wave is prevented from entering through the gap between the doors 22 and 23 by the shield material 36 and the contact piece 38. The door 23 can of course be freely opened and closed while the door 22 is closed. When the door 23 is closed, the state shown in FIG. 7B is obtained.

FIG. 8 is a diagram for explaining another embodiment. In this example, the contact piece 38A itself has a spring property and is attached to the door 22A. When the door 22A is closed, the base of the contact piece 38A bends and the contact piece 38A rotates to the position shown by the alternate long and short dash line. To do. In the above-mentioned embodiment, the long contact piece 38 is attached to the door 22 via the hinge 40 with a spring in consideration of the dimensional error in the case where the long contact piece 38 has a spring property, the fatigue of the spring, etc. If the length is not so long, it is possible to give the contact piece itself a spring property as in this example.

[0031]

[Effect of device]

 As described above, in the shield structure of the present invention, one door is provided with the second shield material along the edge portion close to the other door, and the other door is provided with the one shield member. A contact piece is provided along the edge on the side close to the door, and when both doors are closed, the contact piece comes into contact with the second shield material and contacts with the second shield material. Since the electromagnetic wave can be prevented from entering the housing through the gap between the doors by the one piece, a good shield effect can be obtained even though the housing has a double-door structure. Moreover, the contact piece has a spring property at the base end side, and when the other door is opened and closed, this contact piece is positioned at an angle that does not contact one door. The left and right doors can be opened and closed without interfering with each other.

[Brief description of drawings]

FIG. 1 is a view for explaining an embodiment of the present invention and is a cross-sectional view of a housing with both doors closed.

FIG. 2 is a perspective view of the housing.

FIG. 3 is an enlarged view of circle A in FIG.

FIG. 4 is an exploded perspective view illustrating a state in which a contact piece is attached to one of the doors.

FIG. 5 is an exploded perspective view of a hinge with a spring used for attaching the contact piece.

FIG. 6 is a view for explaining the action of the hinge with a spring.

7A and 7B are views for explaining the relationship between the opening and closing of the door and the shield action, FIG. 7A is a sectional view showing a state in which one of a pair of doors is closed, and FIG. Sectional drawing which shows the closed state.

FIG. 8 is a cross-sectional view illustrating another embodiment of the present invention.

FIG. 9 is a perspective view of a conventional housing having a single door structure.

FIG. 10 is a perspective view of a conventional housing having a double door structure.

FIG. 11 is a perspective view of a conventional housing having a double door structure in which a shield material is provided between both doors.

FIG. 12 is a sectional view of the housing.

[Explanation of symbols]

21 ......... Main body 21a..Opening peripheral edge 22 ........ Other door 23 .... One door 26 .... Electronic device 32 .... First shield material 36. 2 shield material 38 ………… Contact piece 40 ………… Hinge with spring

Claims (1)

[Scope of utility model registration request] 1. A housing main body in which an electronic device is housed, and a pair of left and right doors covering the opening of the housing main body, the housing main body and the pair of doors surrounding the opening. In the shield structure of the electronic device housing case electrically connected by the first shield material, one door of the pair of doors is provided with the other of the pair of doors. A second shield member is provided so as to be along the edge portion on the side close to the door, and the other door is along the edge portion on the side close to the one door, and , A contact piece having conductivity is provided so as to project at an angle of a predetermined angle with respect to the other door, and the contact piece extends from the position tilted by the predetermined angle to a position close to the other door. Rotatable spring property is also given to the base end side, and the amount of protrusion of the contact piece with respect to the other door and Huang,
The size is such that the contact piece does not come into contact with the one door when the other door is opened and closed with the one door closed, and the casing when the other door is closed. The contact piece is in contact with the peripheral edge portion of the opening of the main body, and the contact piece is rotated in a direction along the peripheral edge portion of the opening so as to come into contact with the second shield member. Shield structure for housing electronic devices.