JPH0742167U - Electronic device housing - Google Patents

Abstract

(57) [Abstract] [Purpose] Even if the housing is made of synthetic resin, ground connection can be easily made from the outside, and rainwater can be reliably prevented from entering the inside of the housing. [Structure] The metal inner case 1 is integrally configured with the printed circuit board 2 and the connector 3, and is assembled in the outer housing 4. The inner case 1 is provided with a ground connection plate 5 projecting laterally from the front end of one side wall, and the ground connection plate 5 is provided with a through hole 6. On the front surface of the housing 4, a cylindrical protrusion 8 is provided at a position corresponding to the through hole 6 of the ground connection plate 5. When the inner case 1 is assembled in the housing 4, the plug 3 is inserted into the hole 7 of the housing 4, and the rear end of the printed board 2 is engaged with the claw 11 of the housing 4.
Further, a screw is inserted into the through hole 6 of the ground connection plate 5, projected outward through the through hole 9 of the cylindrical projection 8, and a nut is screwed into the tip portion to integrally connect the inner case 1 and the screw. Let The crimp terminal of the ground wire is interposed at the tip of this screw, and it is tightened with a nut to connect the ground wire.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a housing device for electronic equipment in which an external housing is made of synthetic resin.

[0002]

[Prior art]

 For example, many electronic devices such as CATV main line amplifiers require a ground connection. In such electronic devices, recently, an external housing made of synthetic resin may be used. In such electronic devices that require a ground connection even though the external housing is made of synthetic resin, it is not possible to connect the ground directly to the housing, so holes or cutouts that have been opened in the housing in advance. The vinyl wire is inserted from the outside to the inside via the and is connected to the ground terminal provided in the inner case.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional ground connection method, the lid of the case is opened to connect the ground, and a tool such as a screwdriver is put inside the case to work, which may cause damage to the internal parts. There is.

Further, the hole or notch for passing the vinyl wire is made as small as possible in order to prevent the entry of rainwater, and it is very difficult to work when the electronic device is installed at a high place. Also, it is possible that the lid is closed after the work is completed, but it is not closed securely.

The present invention has been made in view of the above circumstances, and even if the housing is made of synthetic resin, the ground connection can be easily made from the outside, and rainwater can be reliably prevented from entering the inside of the housing. An object of the present invention is to provide a casing device of an electronic device that can be used.

[0006]

A housing device for an electronic device according to the present invention is provided with an inner case made of metal, an outer housing made of synthetic resin for accommodating the inner case, and provided outside the housing. And a means for electrically connecting the earth connection terminal and the inner case.

[0007]

[Action]

 By protruding the earth connection terminal connected to the inner case to the outside through the hole provided in the housing, the ground wire can be easily and surely attached without opening the lid of the housing. Further, since the hole provided in the housing is closed by the ground connection terminal, it is possible to prevent rainwater from entering.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing a configuration of a housing device of an electronic device according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes an inner case made of metal, and a printed circuit board 2 and a contact plug 3 have an integrated structure, and are incorporated in an outer housing 4. Further, the inner case 1 is provided with a ground connecting plate 5 so as to project laterally from the front end portion of one side wall, and a through hole 6 for inserting a screw into the ground connecting plate 5 is provided. .

On the other hand, a plurality of holes 7 for inserting the contact plugs 3 are provided on the front surface of the housing 4, and a cylindrical protrusion 8 is provided at a position corresponding to the through hole 6 of the earth connection plate 5. It is done. The through hole 9 formed inside the cylindrical protrusion 8 is provided so as to connect the inside and the outside of the housing 4. Further, a claw 11 that engages with the printed circuit board 2 is provided on the inner rear portion of the housing 4.

When the inner case 1 is assembled in the housing 4, the connector 3 is inserted into the hole 6 provided in the housing 4, and the rear end of the printed circuit board 2 is set in the claw 11. Secure by engaging. Further, as shown in FIG. 2, a screw 12 formed by using an electrically good conductor such as metal is inserted into the through hole 6 of the ground connection plate 5, and the through hole 6 formed inside the cylindrical protrusion 8 is inserted. The inner case 1 and the screw 12 are integrally coupled by projecting through the hole 9 to the outside of the cylindrical projection 8 and screwing a nut 13 at the tip thereof.

As shown in FIGS. 2 and 3, the crimp terminal 15 provided at the end of the ground wire 14 is interposed at the tip of the screw 12, and the nut 17 is tightened through the washer 16. Thus, the ground wire 14 is connected. FIG. 2 is a cross-sectional view showing a state in which the inner case 1 is incorporated in the housing 4 and the lid 18 of the housing 4 is closed, and FIG. 3 is a perspective view showing its external configuration.

The tip of the screw 12 can be configured as the ground connection terminal 19 as described above, and the ground wire 14 can be easily and surely attached without opening the lid 18 of the housing 4. it can.

In the above embodiment, the screw 12 is inserted into the through hole 6 of the earth connecting plate 5 and the through hole 9 of the cylindrical protrusion 8 to form the earth connecting terminal 19. For example, a projecting ground connection terminal may be formed on the front end side of the inner case 1 so as to project to the outside from a hole provided on the front surface of the housing 4.

[0014]

[Effect of device]

 As described in detail above, according to the present invention, the ground connection terminal connected to the inner case is provided to project outward through the hole provided in the housing, so that the ground can be grounded without opening the housing lid. The wire can be attached easily and surely. Moreover, the hole provided in the housing is blocked by the ground connection terminal, so that the entry of rainwater can be prevented.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a configuration of a housing device of an electronic device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state when the inner case is assembled in a housing in the same embodiment.

FIG. 3 is an external perspective view of the same embodiment.

[Explanation of symbols]

 1 Inner case 2 Printed circuit board 3 Plug 4 External housing 5 Ground connection plate 6 Through hole 7 Hole for insertion of plug 8 Cylindrical protrusion 9 Through hole 11 Claw 12 Screw 13 Nut 14 Ground wire 15 Crimp terminal 16 Washer 17 Nut 18 Lid 19 Ground connection terminal

Claims (1)

[Scope of utility model registration request] 1. An inner case made of metal, an outer housing made of synthetic resin for accommodating the inner case, a ground connection terminal provided outside the housing, the ground connection terminal and the inner case. And a means for electrically connecting the electronic device and the electronic device casing device.