JP2587883Y2 - Flexible printed circuit board storage mechanism for camera - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible printed circuit board storing mechanism for a camera which is most suitable for storing a flexible printed circuit board for connecting a zoom lens barrel and a camera body.

[0002]

2. Description of the Related Art Various types of flexible printed circuit board storage mechanisms for cameras of this type have been considered. As a mechanism for accommodating a flexible printed circuit board for connecting the zoom lens barrel to the camera body and having a storage space outside the barrel, the mechanism described in Japanese Utility Model Laid-Open No. 3-86312 is known. I have.

The mechanism described in Japanese Utility Model Laid-Open Publication No. 3-86312 utilizes the operation of returning the extended zoom lens barrel to the camera body and using a flexible printed circuit board connected to the zoom lens barrel as a camera. It is a mechanism to store by returning to the main body.

[0004]

However, in the conventional flexible printed circuit board storage mechanism of the camera, when the flexible printed circuit board is returned to the camera body, the flexible printed circuit board is pushed into a very thin rectangular tube. In some cases, the printed circuit board was jammed in a thin rectangular tube and could not be stored in the camera body.

The present invention has been made in view of the above problems, and has as its object to securely accommodate a flexible printed circuit board in a camera body.

[0006]

In order to achieve this object, a flexible printed circuit board storage mechanism for a camera according to the present invention includes a reciprocating member which reciprocates between an extended position and a stored position with respect to the camera body. A flexible printed circuit board for connecting the reciprocating member and the camera body, a rotating arm provided on the camera body, and a rotor rotatably provided at the tip of the rotating arm. The flexible printed circuit board is housed in the camera body by winding the flexible printed circuit board.

[0007]

In the flexible printed circuit board storage mechanism of the camera having the above structure, the rotation of the rotary arm causes the rotor to wind the flexible printed circuit board so that the flexible printed circuit board is pulled into the camera body, so that jamming occurs on the way. Therefore, the flexible printed circuit board can be securely housed in the camera body.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of a flexible printed circuit board storage mechanism of a camera according to the present invention. 2 to 4 are sectional views showing one embodiment of the flexible printed circuit board storage mechanism of the camera according to the present invention.

As shown in FIGS. 2 to 4, the lens 3 is held by a shutter 1, and the shutter 1 is fixed to a lens barrel 5. The lens barrel 5 is rotatably supported by the rotary ring 6 (see FIG. 1). The rotation of the lens barrel 5 is
This is realized by helicoid fitting of the helicoid 5a and the helicoid 6a shown in FIGS. The rotating ring 6
Is supported by the fixed cylinder 7 so as to be able to be rotated and fed. The rotation of the rotary ring 6 is realized by the helicoid fitting of the helicoid 6a and the helicoid 7a shown in FIGS.

As shown in FIG. 2 to FIG.
Has a key 8a at a part thereof, and the key ring 8 is rotatably supported by a holding ring 9. The holding ring 9 is fixed between the flange 6 c of the rotating ring 6 and the rotating ring 6. A sub key 10a is formed on the camera body 10 in the optical axis direction. The sub-key 10a is fitted in a sub-key groove (not shown) formed in a part of the key 8a to urge the rotation of the key ring 8. The key 8a is fitted with a fitting portion (not shown) provided on the lens barrel 5 to urge the rotation of the lens barrel 5. As a result, the sub key 10a and the key 8a act together with the rotation of the rotary ring 6, and the lens barrel 5 reciprocates in the optical axis direction (left and right direction in the drawing).

The lens 4 is supported by the ring 2,
The ring 2 moves in the optical axis direction according to the amount of rotation of the rotating ring 6 to change the relative position between the shutter 1 and the lens 4.

A gear 11 is rotatably supported by the fixed cylinder 7. The gear 11 meshes with a gear 6d provided except for a part of the helicoid 6b of the rotating ring 6, and is connected to a lens barrel drive gear series (not shown). Light shielding plates 7b and 7c are provided on the upper part of the fixed cylinder 7, and the light shielding plates 7b and 7c are provided.
c supports the shaft 16. The shaft 16 forms the center of rotation of the rotating arm 17, and the tip of the rotating arm 17 has a rotor 1.
8 and 19 are rotatably mounted. Further, an auxiliary plate 17a is attached to the rotating arm 17, and a part of the fixed cylinder 7 is provided with a relief portion 7d of the auxiliary plate 17a which is necessary when the rotating arm 17 rotates (see FIG. 1). The rotating arm 17 is urged counterclockwise around the shaft 16 by a torsion spring 20.

The flexible printed board 21 passes between the rotors 18 and 19 on the way and is connected between the control electric board 13 provided on the upper part of the fixed cylinder 7 and the shutter 1.

Next, the operation of the configuration described above will be described.

FIG. 4 shows a state in which the lens barrel 5 is stored. In this state, the rotation arm 17 is urged counterclockwise to abut a stopper (not shown) and stop rotating. The flexible printed board 21 is wound around the rotors 18 and 19 and the auxiliary plate 17a with some slack.

When the lens barrel 5 is driven, the rotating ring 6 starts to be extended while rotating. Flexible printed circuit board 21
Is pulled forward in the optical axis direction (to the left in the drawing), and the slack is eliminated. When the slack is eliminated, the rotating arm 17 receives the torque that rotates clockwise from the flexible printed circuit board 21 against the urging force of the torsion spring 20, and starts rotating clockwise. FIG. 3 shows a state where the lens barrel 5 is located near the center of the reciprocating movement. In this state, the auxiliary plate 17a is still in contact with the flexible printed circuit board 21.

When the lens barrel 5 is fully extended from the state shown in FIG. 3 to the state shown in FIG. 2, the auxiliary plate 17a comes out of the light-shielding plate 7b of the fixed cylinder 7 to the outside of the fixed cylinder 7, and is originally a mirror. The cylinder 5 swings and moves to the position where it was stored. In the state shown in FIG. 2, the rotary arm 17 is in a state where the flexible printed circuit board 21 is stretched by the urging force of the torsion spring 20.

When returning from the state in which the lens barrel 5 in FIG. 2 is fully extended to the state in which the lens barrel 5 in FIG. 4 is collapsed, the flexible printed circuit board 21 moves backward in the optical axis (rightward in the drawing). The rotating arm 17 retracts the flexible printed circuit board 21 counterclockwise by the urging force of the torsion spring 20 to house the flexible printed circuit board 21 in the camera body 10. That is, since the lens barrel 5 does not push the flexible printed circuit board 21 and the flexible printed circuit board 21 is pulled rightward in the drawing and is accommodated in the camera body 10, jamming does not occur and the flexible printed circuit board 21 is moved to the camera. It can be securely stored in the main body 10.

Immediately before the state shown in FIG.
Abuts against a stopper (not shown) to stop rotation. Thereafter, the lens barrel 5 continues to move rightward in the drawing, and the amount of movement becomes the amount of deflection of the flexible printed circuit board 21. This amount of deflection is necessary to hold the flexible printed circuit board 21 without tension when the camera is not used.

As described above, when the lens barrel 5 reciprocates between the extended position and the storage position with respect to the camera body 10, the flexible printed circuit board 21 connecting the lens barrel 5 and the camera body 10 is formed. The flexible arm 21 is wound around the rotors 18 and 19 by the rotation of the rotating arm 17, and the flexible printed circuit board 21 is housed in the camera body 10 and pulled out.

[0022]

As described above, according to the flexible printed circuit board storage mechanism of the camera of the present invention, the rotation of the rotary arm causes the rotor to roll the flexible printed circuit board, which acts to draw the flexible printed circuit board into the camera body. Therefore, it is possible to securely store the flexible printed circuit board in the camera body without causing jamming on the way.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a flexible printed circuit board storage mechanism of a camera according to the present invention.

FIG. 2 is a sectional view showing an embodiment of a flexible printed circuit board storage mechanism of the camera according to the present invention.

FIG. 3 is a sectional view showing an embodiment of a flexible printed circuit board storage mechanism of the camera according to the present invention;

FIG. 4 is a sectional view showing an embodiment of a flexible printed circuit board storage mechanism of the camera according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 shutter 2 ring 3 lens 4 lens 5 lens barrel 5a helicoid 6 rotating ring 6a helicoid 6b helicoid 6c flange portion 6d gear 7 fixed cylinder 7a helicoid 7b light shielding plate 7c light shielding plate 7d escape portion 8 key ring 9a key ring 9a key ring 9a key ring 10a Sub key 11 Gear 13 Electric board 16 Axis 17 Rotating arm 17a Auxiliary plate 18 Rotor 19 Rotor 20 Torsion spring 21 Flexible printed board

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields investigated (Int. Cl. ⁶ , DB name) G03B 17/02 G03B 17/00 G03B 7/26 G02B 7/04 G02B 7/28

Claims (3)

(57) [Scope of request for utility model registration] A reciprocating member that reciprocates between a feeding position and a storage position with respect to the camera body; a flexible printed circuit board that connects the reciprocating member to the camera body; A rotating arm, and a rotor rotatably provided at a tip end of the rotating arm, wherein the rotation of the rotating arm causes the rotor to wind around the flexible printed circuit board, thereby accommodating the flexible printed circuit board in the camera body. A flexible printed circuit board storage mechanism for a camera. 2. When the center of rotation of the rotary arm makes a rocking motion and the reciprocating member is at the extended position, the rotary arm and the rotor also rock at the storage position of the reciprocating member. 2. The flexible printed circuit board storage mechanism for a camera according to claim 1, wherein the mechanism moves dynamically. 3. The flexible printed circuit board storage mechanism for a camera according to claim 1, comprising a plurality of combinations of said rotary arm and said rotor.