JPH11162607A - Electric connecting structure of electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form in a small area a flexible board of an electric apparatus whose electric connections are established by a harness to the board and make small the space in which the harness is installed by storing the board in a space between a cylinder and a small cylindrical member in such a condition as deflected convexly in the circumferential direction of the cylinder. SOLUTION: A coupling piece 30 of a flexible board is folded up in double after a first contacting piece 31 is locked by a locking notch 42 in a cylinder 40 and is inserted into the space between the cylinder 40 and a small cylindrical member 50. The coupling piece 30 is stored in such a condition as deflected convexly in the circumferential direction of the cylinder 40-(a). When a lens is rotated clockwise relative to the case body, the amount of the deflective deformation of the coupling piece 30 enlarges-(b). When the lens body is rotated counter clockwise, the coupling piece 30 is pulled and the amount of deflective deformation lessens. That is, when the lens body is rotated, only the amount of deflective deformation of the flexible board changes with rotation of the lens. This allows the length of the board to remain small, and the power loss of the board lessens.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connection structure of an electronic device having two connected members rotatably provided to each other, and more particularly to an electrical connection structure of a video camera or the like. Things.

[0002]

2. Description of the Related Art In FIGS. 9 to 11, a video camera will be described as an example of electronic equipment. FIG. 9 is a side view of a conventional video camera. A viewfinder (90) capable of removing a captured image is pivoted (91) on a camera body (9) provided with an imaging lens (60) and the like. Camera body
(9) and the viewfinder (90), as shown in FIG.
They are electrically connected by a flexible substrate (3)
-95212). The flexible substrate (3) is a camera body
A first contact piece (31) fixed to (9), a winding part (35) connected to the first contact piece (31) and winding an elongated substrate piece several times, (35) and a second contact piece (32) connected to the viewfinder (90). The central axis of the winding part (35) is orthogonal to the rotation plane of the viewfinder (90). As shown in FIG. 11, when the viewfinder (90) is rotated around the pivot (91), the second contact piece (32) rotates and the first contact piece (31) is fixed. The diameter of the hollow part of the winding part (35) expands and contracts.

[0003]

In the conventional video camera, since the diameter of the winding portion (35) of the flexible substrate (3) expands and contracts, if the rotation angle of the viewfinder (90) is large, In some cases, the diameter of the winding part (35) becomes very small. Here, in the electrical connection between the camera body (9) and the viewfinder (90), a large voltage or a large current cannot be sufficiently transmitted by the flexible substrate (3) alone. A harness that is a bundle may be used. However, if this harness can be passed through the hollow part of the winding part (35), it will save space, but the diameter of the winding part (35) may be very small, so tighten the harness. Occurs. Therefore, in the conventional video camera, it is difficult to pass the harness through the hollow part of the winding part (35). Further, since the winding portion (35) is formed by winding an elongated substrate piece several times, the entire length of the flexible substrate (3) also becomes long. As a result, the electric resistance in the flexible substrate (3) increases, and the power loss also increases. An object of the present invention is to reduce the area of a flexible substrate and the space in which a harness is provided in an electric device using a harness and a flexible substrate for electrical connection.

[0004]

SUMMARY OF THE INVENTION An electronic device having a flexible substrate (3) attached to a pivot portion of two connected members rotatably provided to each other and electrically connecting the two connected members. In the electrical connection structure, each connected object is a flexible substrate.
First and second fittings (4) and (5) for lightly holding (3), and one fitting (4) having a flexible substrate (3) in contact with the inner surface thereof
(40) protrudes toward the other fitting body (5), and from the other fitting body (5), a small tubular body (50) fitted into the tubular body (40) projects,
The flexible substrate (3) is stored in a space between the cylindrical body (40) and the small cylindrical body (50) in a state of being bent and deformed in a convex shape along the circumferential direction of the cylindrical body (40). .

[0005]

[Operation and Effect] The flexible substrate (3) is composed of a cylindrical body (40) and a small cylindrical body (5).
(0), in the space between the cylindrical body (40) is deformed convexly along the circumferential direction of the cylindrical body (40), when any one of the connected body is rotated, the bent flexible substrate ( 3) is pulled or
Or, it will be in any state of being excessively bent. That is, only the amount of flexural deformation of the flexible substrate (3) changes, and the length of the flexible substrate (3) can be shorter than in the prior art.
The power loss in (3) is reduced. Also, flexible substrates
Since (3) is bent and deformed along the circumferential direction of the cylindrical body (40) outside the small cylindrical body (50), even if one connected body is rotated,
The inner diameter of the small cylinder (50) does not narrow. Therefore, the small cylinder
Even if a harness or the like is passed through the inside of (50), there is no fear that the harness or the like is tightened, and the electrical connection between the connected objects can be smoothly performed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example of the present invention will be described in detail with reference to the drawings. The same components as those of the related art are denoted by the same reference numerals, and detailed description thereof is omitted. In the following description, a digital still camera will be exemplified as the electronic device. 1 and 2 are perspective views of a digital still camera. The digital still camera includes an imaging lens body (6) pivotally supported on a side of a case body (1). The lens body (6) has a strobe lamp (61) beside the lens barrel (60), and is electrically connected to the case body (1). Case body
(1) has a shutter button (50) on the upper surface and a lid (2) on the front surface.

FIG. 2 is a perspective view of the digital still camera of FIG. 1 in a state where the lens body (6) is turned upright and viewed from the back. A liquid crystal panel (51) for taking a captured image is provided on the back of the case body (1), and a slide switch (52) for switching the zoom of the lens barrel (60) is provided diagonally above the liquid crystal panel (51). ) Is provided. At the lower end of the case body (1), a hand-operated dial (53) is located, and by turning the hand-operated dial (53), power ON / OFF and recording / recording are performed.
Playback is switched.

A battery is housed in the case body (1), and the case body (1) and the lens body (6) are electrically connected at a pivot. FIG. 3 is a side view showing the electrical connection at the pivot between the case body (1) and the lens body (6). A first fitting body (4) having a flat plate shape is provided on the case body (1), and a lens body (6).
A flat plate-shaped second fitting body (5) is provided to face each other, and a contact plate (8) formed by bending a metal plate is provided inside the first fitting body (4). Pressing members (7) are mounted inside the fitting members (5). As shown in FIGS. 3 and 4,
A pressure contact plate (70) having a bulge (71) formed on a part of the peripheral surface is attached to the inside of the pressure contact body (7), and a bulge is formed on the contact plate (8).
The recesses (80), (80), (80), (80) into which the (71) fits are recessed.
When the lens body (6) rotates, the bulge (71) of the press contact plate (70) fits into each of the recesses (80), so that the user can get a click feeling, and the lens body (6) can be moved to a predetermined position. It can be seen that the rotation position has been reached. Contact plate (8), press plate (70) and press body (7)
Are open at the center.

As shown in FIG. 5, first and second fittings (4)
(5) is made of synthetic resin, and the cylindrical body (40) projects inward from the first fitting body (4). A cylindrical body from the second fitting body (5)
A small cylinder (50) having a diameter smaller than that of (40) protrudes inward, and a cutout (51) is formed on the side of the small cylinder (50) for fitting a flexible substrate (3) described later. Have been. The cylinder (40) penetrates through the openings of the contact plate (8), the pressure contact plate (70) and the pressure contact (7), and the small cylinder (50) fits inside the cylinder (40). The bottom of the small cylinder (50) is open (52)
Then, as described later, the harness (2) passes through the opening (52).
Penetrates. Further, as shown in FIG. 8 (a), the cylindrical body (40) has a through hole (41) on the bottom surface, and the flexible substrate (3) is hooked at one end of the through hole (41). A notch (42) is formed. As shown in FIG. 6, an elongated sheet-like flexible board (3) is inserted between the tubular body (40) and the small tubular body (50) while being bent and deformed. Is lightly held in the notch (51) of the second fitting body (5).

FIG. 7 is a plan view of the flexible substrate (3).
A first contact piece (31) locked to the cylindrical body (40), and the first contact piece (31);
An elongated connecting piece (30) extending perpendicular to the connecting piece (30) and a second connecting piece (32) orthogonal to the connecting piece (30) and locked to the notch (51) of the second fitting body (5). To be equipped. The portion A of the second contact piece (32) shown in FIG. 7 fits into the notch (51) of the second fitting body (5). 1st piece (31)
It goes without saying that the second connecting piece (32) is connected to the circuit board in the lens body (6), while the second connecting piece (32) is connected to the circuit board in the case body (1). The small cylindrical body (50) of the second fitting body (5) is concentrically fitted into the cylindrical body (40) of the first fitting body (4), and the case body (1) and the lens body
(6) is pivoted. In this state, the flexible substrate (3) is attached to the pivot of the case body (1) and the lens body (6).
As shown in FIG. 6 and FIG. 8 (a), the flexible substrate (3) locks the first contact piece (31) with the locking notch (42) of the cylindrical body (40). The connecting piece (30) is folded twice and inserted into the space between the tubular body (40) and the small tubular body (50). The connecting piece (30) is stored in a state of being bent and deformed in a convex shape along the circumferential direction of the cylindrical body (40). Second
The contact piece (32) is fitted into the notch (51) of the second fitting body (5), and the mounting of the flexible substrate (3) is completed.

When the lens body (6) is rotated clockwise with respect to the case body (1), as shown in FIG. 8 (b), the bending deformation of the connecting piece (30) of the flexible substrate (3) occurs. The amount increases. FIG.
When the lens body (6) is rotated counterclockwise from the state shown in (a), the connecting piece (30) is pulled, and the amount of bending deformation is reduced. That is, when the lens body (6) is rotated, the bent and deformed flexible substrate (3) is pulled or excessively bent, and the flexible substrate (3) is deformed. Only the amount of bending deformation changes. As a result, the length of the flexible substrate (3) can be reduced as compared with the related art,
The power loss in (3) is reduced.

In order to electrically connect the case body (1) and the lens body (6), not only the flexible substrate (3) but also a harness (2) which is a bundle of electric wires may be used. That is, a flexible substrate
The conductive pattern (not shown) formed in (3) is generally thin, having a width of about 1 mm, and cannot be used for supplying a large current or a large voltage. Further, if the number of wires of the harness (2) is large, not only the wires are entangled but also the workability is poor due to lack of flexibility. Therefore, the harness can be used in combination with the flexible substrate (3).
(2) may be used. However, if a separate space is required to provide the harness (2), the size of the digital still camera is increased, which is against the demands of the market. Therefore,
In this example, as shown in FIGS. 8 (a) and 8 (b),
Pass the harness (2) through the case (0) and the case body (1) and the lens body.
(6) is electrically connected. As described above, even when the lens body (6) is rotated, the flexible substrate (3) is kept in the cylindrical body (40) and the small cylindrical body (50).
Only bends and deforms in the space between
Does not change in diameter. Therefore, unlike the related art, there is no fear that the harness or the like is tightened, and the electrical connection between the case body (1) and the lens body (6) can be smoothly performed.

Since the flexible substrate (3) is very thin, having a thickness of about several millimeters, it may be used repeatedly. or,
An electric wire cable or the like may be used instead of the harness. Furthermore, in this example, a digital still camera is illustrated, but other electronic devices such as a video camera may be used. Also, the first fitting body (4) is attached to the case body (1),
The fitting body (5) is connected to the lens body (6), but may be reversed.

The description of the above embodiments is for the purpose of illustrating the present invention and should not be construed as limiting the invention described in the appended claims or reducing the scope thereof. Further, the configuration of each part of the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made within the technical scope described in the claims.

[Brief description of the drawings]

FIG. 1 is a perspective view of a digital still camera.

FIG. 2 is a perspective view of a digital still camera.

FIG. 3 is a side view showing an electrical connection between a case body and a lens body.

FIG. 4 is an exploded perspective view of a contact plate and a press body.

FIG. 5 is a perspective view showing attachment to first and second fitting bodies, a contact plate, and a pressure contact body.

FIG. 6 is an exploded perspective view of the first and second fitting bodies and a flexible substrate.

FIG. 7 is a plan view of a flexible substrate.

FIGS. 8A and 8B are side views showing rotational positions of a cylindrical body and a small cylindrical body.

FIG. 9 is a side view of a conventional video camera.

10 is a perspective view showing the electrical connection between the camera body of the video camera in FIG. 9 and a viewfinder.

FIG. 11 is a front view showing a rotating state of a conventional flexible substrate.

[Explanation of symbols]

 (1) Case body (2) Harness (3) Flexible board (4) First fitting body (5) Second fitting body (6) Lens body (40) Cylinder (50) Small cylinder

Claims (3)

[Claims] 1. An electrical connection structure for an electronic device having a flexible substrate (3) attached to a pivot portion of two connected bodies rotatably provided to each other and electrically connecting the two connected bodies. In the above, each connected body includes first and second lightly holding flexible substrates (3).
A fitting body (4), (5) is provided, and a tubular body (40) in which a flexible substrate (3) is in contact with the inner surface protrudes toward the other fitting body (5) from one of the fitting bodies (4). A small cylinder (50) fitted into the cylinder (40) protrudes from the other fitting body (5), and the flexible substrate (3) is located between the cylinder (40) and the small cylinder (50). An electrical connection structure for an electronic device, wherein the electronic device is housed in a space along a circumferential direction of a cylindrical body (40) in a state of being bent and deformed in a convex shape. 2. The small cylindrical body (50) is formed to have a size that allows insertion of a harness (2), which is a bundle of electric wires through which a larger current or a larger voltage flows than the flexible substrate (3). An electrical connection structure for an electronic device according to item 1. 3. The electrical connection structure for an electronic device according to claim 1, wherein the two connected bodies are a case body (1) of the digital still camera and a lens body (6) for imaging.