JPH0676885A - Electronics - Google Patents

Abstract

(57) [Summary] [Purpose] To enable conduction between the ground of the pin jack and the rear panel of the video camera in the shortest distance. [Structure] The pin jack 10 is composed of a connection terminal 11 and a connection terminal support member 12 having a ground 13 made of a conductive member and connected to an outer peripheral surface 11b made of a conductive member of the connection terminal 11. The connection terminal 11 is exposed to the outside from the hole 5a of the rear panel 5. A leaf spring 20 made of a conductive member is interposed between the connection terminal support member 12 and the rear panel 5. The pair of first of the leaf spring 20
The abutting portions 22, 22 come into contact with the inner surface of the rear panel 5, and the second abutting portion 23 comes into contact with the ground 13 of the connection terminal supporting member 12. This allows pin jack 1
0 and the rear panel 5 are electrically conductive in the shortest distance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device such as a video camera having an anti-interference measure structure.

[0002]

2. Description of the Related Art For example, when the distance between the ground of a connector (connection terminal) that handles input and output of an electronic device such as a video camera and the ground of the device is too long, the device is adversely affected in a strong electric field. For example, a video camera (electronic device) 1
In 00, as shown in FIG. 7, the ground (GND) of the substrate 102 in the device body 101 and the chassis 103 in the device body 101 are stopped by screws 104 to be grounded. Further, in another electronic device, as shown in FIG. 8, a screw 11 is provided on the rear portion of the pin jack (connection terminal) 110.
0a is formed, and the hexagon bolt 112 or the like is used to form the chassis 111.
It was fixed to and grounded.

[0003]

However, in the video camera 100 shown in FIG. 7, the connector (connection terminal) 1
The distance between 05 and screw 104 is extremely short, and chassis 1
03 and the outer casing metal plate 106 are required to conduct electricity in a short distance, and it is difficult for the video camera 100, which tends to be downsized, to conduct electricity in a short distance. Also,
In the structure shown in FIG. 8, the work of soldering the ground wire 113 and the work of fastening and fixing the pin jack 110 with the bolts 112 are required, which causes a problem in terms of labor and space of the work.

Therefore, the present invention provides an electronic device capable of electrically conducting the conductive member of the connection terminal and the housing in the shortest distance.

[0005]

[MEANS FOR SOLVING THE PROBLEMS] A hollow cylindrical connecting terminal having an inner peripheral surface formed of a signal input / output conductive member and an outer peripheral surface formed of a grounding conductive member is provided in a housing. In an electronic device that protrudes out of the housing through the hole, it is a substantially rectangular parallelepiped, and the connection terminal is fixed on one surface,
Between the connection terminal supporting member fixed to the printed circuit board and the casing and the connection terminal supporting member, a conductive member connected to the outer peripheral surface of the connection terminal on the other surface connecting to the one surface. A base portion arranged and abutted on the one surface of the connection terminal supporting member at a position that does not interfere with the connection terminal,
A first contact portion protruding from the base portion to the housing side,
Second extending from the base to the connection terminal support member side
And a leaf spring made of a conductive member,
The second contact portion of the leaf spring is brought into contact with the conductive member provided on the connection terminal support member, and the first contact portion of the leaf spring is brought into contact with the inner surface side of the housing. The casing and the outer peripheral surface of the connection terminal are brought into contact with each other to have the same potential.

[0006]

The inner surface of the housing and the conductive member of the connection terminal supporting member connected to the grounding conductive member of the connection terminal are connected via the first contact portion and the second contact portion of the leaf spring. Conducted in the shortest distance. This eliminates the need for soldering and bolting work as in the prior art, and strengthens the measures against interference and radiation to electronic devices.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIG. 6, reference numeral 1 is a video camera as an electronic device. The housing 2 of the video camera 1 has a rectangular tubular body 3, a rectangular plate-shaped front panel 4 that closes the front side of the tubular body 3, and a rectangular plate that closes the rear side of the tubular body 3. The rear panel 5 and the like. An optical lens 6 is screwed into a through-screw hole 4a in the center of the front panel 4, and a solid-state image sensor (CCD) 7 is adjustable in flange back at a position on the front side in the housing 2 facing the optical lens 6. It is located at. Further, as shown in FIG. 1, a pair of circular holes for projecting and exposing the respective connection terminals 11 of the pair of RCA pin jacks 10 for video output and the like are provided on the upper portion of the rear panel 5. Part 5a,
5a is formed.

Each of the RCA pin jacks 10 comprises a connection terminal 11 and a connection terminal support member 12. The inner peripheral surface 11a of the connection terminal 11 is a conductive member for signal input / output,
The outer peripheral surface 11b has a hollow cylindrical shape formed of a conductive member for grounding. In addition, the connection terminal support member 12
Is a substantially rectangular parallelepiped made of synthetic resin, the connection terminal 11 is fixed to the front surface (one surface) 12a, and the outer peripheral surface 11b of the connection terminal 11 is connected to the upper surface (other surface) 12b connected to the front surface 12a. A ground (conductive member) 13 is provided, and a pair of terminals 14, 14 are fixed by soldering to a printed circuit board 9 screwed to the chassis 8 on the cylindrical body 3. Further, groove portions (engaging portions) 15 and 15 are formed on the upper sides of both side surfaces 12c and 12c of the connecting terminal supporting member 12 where the conductive member is not provided.

A leaf spring 20 made of a conductive material is arranged between the rear panel 5 and the connection terminal support member 12. The leaf spring 20 is used for the connection terminal support member 12
A base portion 21 that abuts on the front face 12a at a position where it does not interfere with the connection terminal 11, and a pair of first base portions 21a that project from the base portion 21 to the inner surface side of the rear panel 5 and the central portion is curved outward. Abutting portions 22 and 22, a U-shaped second abutting portion 23 extending from the base portion 21 to the ground 13 side of the connection terminal supporting member 12 and contacting the ground 13, and both sides of the base portion 21. Each groove portion 1 of both side surfaces 12c, 12c of the connecting terminal supporting member 12 which is extended further.
5, a pair of arm portions 24 having a substantially V-shaped tip engaging with 5,
24 and 24 are integrally formed by bending. And
The second contact portion 23 of the leaf spring 20 and the ground 13 of the connection terminal support member 12 are brought into contact with each other, and the pair of first contact portions 22 and 22 are brought into contact with the inner surface side of the rear panel 5. Thus, the rear panel 5 and the ground 13 connected to the outer peripheral surface 11b of the connection terminal 11 are brought into contact with each other via the leaf spring 20 so as to be electrically conductive.

According to the video camera 1 of the above embodiment, as shown in FIG. 1, each RCA pin jack 10 is soldered to the printed circuit board 9 in advance, and the printed circuit board 9 is screwed to the chassis 8. . From this state, when the leaf spring 20 is pushed into the connection terminal support member 12 so as to straddle the connection terminal 11 of each RCA pin jack 10, as shown in FIG. 3, the second contact portion 23 of the leaf spring 20 is pressed.
Contacts the ground (GND) 13 of the connection terminal support member 12, and as shown in FIG. 4, the pair of arm portions 24, 24 of the leaf spring 20 cause the groove portions 15, 15 on both side surfaces of the connection terminal support member 12 to move. Locked in.

As shown in FIGS. 3 and 4, when the RCA pin jacks 10 are integrated with the leaf springs 20,
When the rear panel 5 is attached to the rear side of the cylindrical body 3, the curved portions of the pair of first contact portions 22, 22 of each leaf spring 20 come into contact with the inner surface of the rear panel 5. As a result, the leaf springs 20 can conduct the ground 13 of the connection terminal support member 12 of each RCA pin jack 10 and the inner surface of the rear panel 5 in the shortest distance. As a result, as before,
No need for complicated work such as soldering and bolt tightening.
The structure is effective for interfering with electronic devices and for radiation countermeasures.

Although the video camera has been described as the electronic device according to the above embodiment, other electronic devices may be used. Although the leaf spring has a shape having a pair of first contact portions, the first contact portion may be formed in a ring shape or the like that penetrates the connection terminal.

[0014]

As described above, according to the electronic device of the present invention, the electronic device between the inner surface of the housing and the conductive member of the connection terminal supporting member connected to the grounding conductive member of the connection terminal is connected to Since the leaf spring having the first and second abutting portions and the like is interposed, the inner surface side of the casing and the connection terminal support are provided via the first and second abutting portions of the leaf spring. The conductive member of the member can be electrically conductive in the shortest distance. This eliminates the need for complicated work such as soldering and bolting, which is required in the conventional case, and it is possible to reinforce the interference against electronic equipment and radiation.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a main part of a video camera (electronic device) showing an embodiment of the present invention.

FIG. 2 is a perspective view of a pin jack and a leaf spring used in the video camera.

FIG. 3 is a side view showing a state in which a leaf spring is attached to the pin jack.

FIG. 4 is a plan view showing a state in which a leaf spring is attached to the pin jack.

5A is a front view of the leaf spring, FIG. 5B is a plan view of the leaf spring, and FIG. 5C is a sectional view taken along line AA of FIG.

FIG. 6 is an overall perspective view of the video camera.

FIG. 7 is a side view of a main part of a conventional video camera.

FIG. 8 is a side view showing a state in which a conventional pin jack is attached to a chassis.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Video camera (electronic device) 2 ... Housing 5 ... Rear panel (housing) 5a ... Hole 11 ... Connection terminal 11a ... Inner peripheral surface 11b ... Outer peripheral surface 12 ... Connection terminal support member 12a ... Front surface (one surface) 12b ... Upper surface (other surface) 12c, 12c ... Both side surfaces 13 ... Ground (conductive member) 15 ... Engaging portion 20 ... Leaf spring 21 ... Base portion 22 ... First contact portion 23 ... Second contact portion 24, 24 … A pair of arms

Claims (3)

[Claims] 1. A hollow cylindrical connection terminal having an inner peripheral surface formed of a conductive member for signal input / output and an outer peripheral surface formed of a conductive member for grounding, and a hole portion provided in a housing. In an electronic device that protrudes to the outside of the housing via a substantially rectangular parallelepiped, the connection terminal is fixed to one surface and the conductive surface connected to the outer peripheral surface of the connection terminal is connected to the other surface. A connection terminal supporting member having a member and fixed to a printed circuit board, and arranged between the housing and the connection terminal supporting member, and at a position not interfering with the connection terminal on the one surface of the connection terminal supporting member. A base portion to be contacted, a first contact portion protruding from the base portion to the housing side, and a second contact portion extending from the base portion to the connection terminal supporting member side,
A leaf spring made of a conductive member, the second contact portion of the plate spring and the conductive member provided on the connection terminal supporting member are brought into contact with each other, and the first contact of the plate spring is provided. An electronic device, wherein the housing and the inner surface of the housing are brought into contact with each other so that the housing and the outer peripheral surface of the connection terminal have the same potential. 2. An engaging portion is provided on each of a pair of side surfaces that are connected to the one surface of the connection terminal supporting member and are not provided with the conductive member, and the leaf spring extends from the base portion. The electronic device according to claim 1, wherein a pair of arm portions that engage with the engaging portions provided on the pair of side surfaces are provided. 3. A pair of first abutting portions projecting from the base portion of the leaf spring to the housing side are formed, and the portions of the respective abutting portions projecting to the housing side are curvedly formed. Item 1. The electronic device according to item 1.