JPH07209718A - Connecting structure of electrical substrate for camera - Google Patents

Abstract

PURPOSE:To provide the connecting structure of the electrical substrate of a camera capable of attaining high performance, microminiaturization and reduction in cost and efficient in space. CONSTITUTION:In the camera including a vibration proof unit 100 having a vibration proof lens group in a lens barrel, a shutter unit 40 integrated to a lens group having a diameter smaller than that of the vibration proof lens group, a wiring substrate for a shutter 63 connecting the electrical substrate provided in a camera main body to the electrical part of the shutter unit and a vibration proof wiring substrate 61 connecting the electrical part of the vibration proof unit, the wiring board for the shutter 63 and the vibration proof wiring substrate 61 are electrically connected by a plane nearly perpendicular to an optical axis formed in the vicinity of the lens group of the shutter unit 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric board connection structure for a camera.

[0002]

2. Description of the Related Art Conventionally, as for an electric board of a camera, a mounting board fixedly mounted on the camera body and electric parts in a lens barrel are connected by a single FPC (flexible printed board) (actual flat panel 3-). 160594 etc.). In such a camera, the shutter part, the focus part, and the like arranged inside are generally composed of one unit, and since the electric parts are concentrated in one place, the FPC can be easily connected. there were.

[0003]

However, in recent cameras, in order to realize high performance, ultra-compactness and cost reduction of the camera, an anti-vibration unit for preventing camera shake is provided inside the lens barrel. Have been introduced, and various measures have been taken such as separately forming the shutter part and the focus part. For this reason, many electric parts are required inside the lens barrel, and it is impossible to arrange the electric parts in one place because of the configuration, and the FPC also has a complicated shape.

Further, since it is impossible to connect all the electric components with one FPC, it is conceivable to provide a second FPC and connect it to a conventional (first) FPC. Another problem arises in that a space for connecting the first FPC and the second FPC must be provided, which is an obstacle to super compactness.

An object of the present invention is to solve the above-mentioned problems and to realize high performance, super compactness and low cost.
An object is to provide a space-efficient camera electric board connection structure.

[0006]

A first solving means of an electric board connecting structure of a camera according to the present invention is to provide a plurality of lens groups arranged in a lens barrel and a lens unit for supporting each lens group. A first wiring board arranged between an electric board provided on the camera body and the lens barrel;
In a camera including a second wiring board arranged inside the lens barrel, the first wiring board and the second wiring board are connected around a lens group having a smaller diameter. It is characterized by being done.

A second solving means is the camera electric board connecting structure according to the first solving means, wherein the first wiring board and the second wiring board are perpendicular to an optical axis formed in the lens unit. It is characterized in that it is electrically connected in various ways.

A third means for solving the problems is that a plurality of lens groups arranged in the lens barrel, a lens unit for supporting each lens group, an electric board provided on the camera body, and the lens barrel are provided. In a camera including a first wiring board arranged between the first wiring board and a second and third wiring board arranged inside the lens barrel, the second wiring board and the third wiring board are provided. Is characterized in that it is connected in the periphery of the lens group having a smaller diameter.

A fourth solving means is the electric board connecting structure for a camera according to the third solving means, wherein the second wiring board and the third wiring board are perpendicular to an optical axis formed in the lens unit. It is characterized in that it is electrically connected in various ways.

A fifth solution is to provide an image stabilizing unit having an image stabilizing lens group in the lens barrel, a shutter unit integrated with a lens group having a diameter smaller than that of the image stabilizing lens group, and a camera. In a camera including a shutter wiring board connecting an electric board provided in a main body and electric parts of the shutter unit, and a vibration-proof wiring board connecting electric parts of the vibration-proof unit, the shutter wiring board includes: The anti-vibration wiring board is electrically connected on a surface substantially perpendicular to the optical axis formed near the lens group of the shutter unit.

[0011]

According to the present invention, the wiring boards are connected to each other at the periphery of the lens group having the smallest diameter among the plurality of lens groups.
It is possible to connect without providing a special space. At this time, if the lens units are electrically connected on the vertical surface with respect to the optical axis, the smaller the lens group diameter, the larger the vertical surface effective for connecting the electric substrate. That is, a certain gap is provided between the lens groups due to the configuration of the lenses, and thus a slight gap is also provided between the lens units that support the lens groups. Since the gap exists on a plane vertical to the optical axis, the vertical plane is utilized for electrical connection. Since the connection is made on this vertical surface,
A large space can be used in a plane, many connections can be made, and a large plane can be received, which facilitates work such as soldering.

[0012]

Embodiments will be described in more detail below with reference to the drawings and the like. 1 and 2 are side sectional views showing a lens barrel-integrated camera (zoom camera) according to the present embodiment. FIG. 1 shows the lens barrel in a wide-angle position, and FIG. 2 shows the lens barrel. FIG. 3 is a diagram showing a state in which each is in a telephoto position. A fixed lens barrel 2 is fixed to the camera body 1, and straight grooves 2a and 2b in the optical axis direction are formed on the peripheral surface of the fixed lens barrel 2. A cam barrel 3 is rotatably fitted on the outer peripheral surface of the fixed lens barrel 2 and is prevented from coming off by a ring 4. A gear portion 3d is formed on the outer peripheral surface of the cam barrel 3, and the rotation of the zoom motor 77 (FIG. 5) is transmitted to the gear portion 3d via the gear GR, whereby the cam barrel 3 is moved. Rotate. Also,
Cam grooves 3a, 3b, 3c are formed on the peripheral surface of the cam barrel 3.

A lens substrate 5 is provided on the inner peripheral surface side of the fixed barrel 2.
The camera shake correction device 100 is held on the substrate 5. The image stabilizing apparatus 100 includes an image stabilizing lens group (hereinafter referred to as an image stabilizing lens) L3 held by a lens holder 6 and a drive mechanism 101 that drives the image stabilizing lens L3. For example, in FIG.
As shown in FIG. 2, an X-direction drive mechanism 10 that drives the anti-vibration lens L3 in the X direction and a Y-direction drive mechanism 2 that drives the anti-vibration lens L3 in the Y direction.
It is composed of 0 and 0. Here, the X direction and the Y direction are both directions orthogonal to the optical axis of the taking lens.

The Y-direction drive mechanism 20 includes a Y-direction motor 21.
And a gear 22 that rotates integrally with the output shaft of the motor 21
And a reduction gear train 23 that reduces the rotation of the gear 22,
A Y-direction shift drive shaft 24 connected to the gear train 23 and a Y-direction drive arm 25 for converting the rotation of the drive shaft 24 into a linear motion.
And have. The Y-direction shift drive shaft 24 is rotatably supported on the substrate 5 by a pair of flanges 24a and 24b, and a gear 24c that meshes with a final gear of the reduction gear train 23 is coupled to an upper portion of the Y-direction shift drive shaft 24 and a lower portion thereof. Is formed with a male screw portion 24d. The Y-direction drive arm 25 includes the substrate 5
It is held so as to be able to move up and down and non-rotatably in a space formed in, and the screw portion 24d of the drive shaft 24 is screwed into a female screw portion 25a formed on the upper portion thereof.

A holding portion 25b is formed at the lower end of the drive arm 25, and the upper connecting portion of the lens holder 6 is held by the holding portion 25b via four slider balls 26. Therefore, as the drive arm 25 moves up and down, the lens holder 6, that is, the image stabilizing lens L3 is shifted in the Y direction in the drawing. The shift amount depends on the rotation amount of the motor 21. Further, the X-direction drive mechanism 10 is also configured to shift the image stabilizing lens L3 in the X-direction by the same configuration as the Y-direction drive mechanism 20.

A disc 31 having a plurality of concentric holes is rotatably attached to the gear 22 which rotates integrally with the output shaft of the Y-direction motor 21. The photo interrupter 32 is composed of a light projecting portion and a light receiving portion that face each other across the hole forming portion of the disk 31, and a pulse signal is output every time the photo interrupter 32 detects the hole portion of the disk 31. Therefore, by counting the number of pulses, the amount of rotation of the motor (the anti-vibration lens L
3 depending on the shift amount) can be detected. A similar disk and photo interrupter are also provided on the X-direction motor side, and the amount of rotation of the motor is detected by this.

Here, in FIG. 3, one photo interrupter 32 is shown for each of the X and Y directions, but actually two photo interrupters 32 are provided for each direction, as shown in FIG. A photo interrupter 32 is provided. The reason why two photo interrupters are used is to detect the moving direction as well as the moving amount of the image stabilizing lens L3. The spring 33 is for urging the lens holder 6 toward the Y-direction drive mechanism 20 and the X-direction drive mechanism 10, respectively.

In FIG. 1, a lens shutter mechanism 40 is integrally attached to the image stabilizing apparatus 100 constructed as described above. This lens shutter mechanism 4
In No. 0, the shutter blade 41 also serving as the diaphragm and the drive unit 42 for driving the shutter blade 41 are integrated, and the drive unit 42 is screwed to the substrate 5 by the screw 43. Also,
An electric component 42a such as a motor for driving the shutter blade 41 is mounted on the drive unit 42, and the lens group L2 is provided on the inner peripheral surface side of the drive unit 42 via a lens holder 44.
Is held. Here, the cam follower 5a planted on the substrate 5 penetrates the rectilinear groove 2b and is engaged with the cam groove 3b. A lens holder 45 for holding the lens unit L1 is inserted through the front end side of the fixed lens barrel 2, and a cam follower 45a planted on the outer peripheral surface of the lens holder 45 penetrates the rectilinear groove 2a and is engaged with the cam groove 3a. ing.

Further, on the rear side of the fixed lens barrel 2, a lens substrate 51 having a helicoid 51a formed on the inner peripheral surface thereof is inserted, and a cam follower 51b planted on the outer peripheral surface thereof penetrates the straight groove 2b. , Is engaged with the cam groove 3c. The focusing lens L4 is held by the lens holder 52, and the helicoid 52a formed on the outer peripheral surface of the lens holder 52 has the helicoid 5 of the lens substrate 51.
It is screwed to 1a. In addition, the helicoid 51a,
Gear 53a integrated with output shaft of focusing motor 53
Are screwed together, and the lens holder 52 is rotated by the rotation of the motor 53. When the lens holder 52 rotates, the action of the helicoids 51a and 52a causes the lens holder 5 to move.
2, that is, the focusing lens L4 moves in the optical axis direction, whereby focusing is performed. here,
The lens groups L1 to L4 described above constitute a photographic lens optical system.

The FPC guide member 54 is the image stabilizer 1
00, lens shutter mechanism 40, and lens holder 45
Is extended in the optical axis direction and is held by the camera body 1 so as to be slidable in the optical axis direction. A long hole 54a in the optical axis direction is formed in the guide member 54, and a stepped screw 55 penetrating therethrough is screwed into the lens substrate 51. Therefore, the lens substrate 51 moves in the optical axis direction while being guided by the elongated hole 54a during zooming described later, and the stepped screw 5
When 5 reaches the front end of the elongated hole 54a, the lens substrate 51 and the guide member 54 move integrally. An FPC guide member 56 is provided along the inner peripheral surface of the rear portion of the cam barrel 3.

Anti-vibration flexible printed circuit board (hereinafter,
As shown in FIG. 5, FIG. 6, FIG. 8, or the like, a vibration-isolating FPC 61 is a substantially annular substrate attached to the image stabilizing device 100.
The electric components (the X and Y direction motors 21 and the photo interrupters 32) that configure the image stabilizing apparatus 100 are mounted. Further, the lower portion of the FPC 61 for image stabilization is pulled out to the front of the camera along the optical axis through the hole provided in the lens substrate 5, and the flexible shutter is attached to the left side (front side) of the shutter mechanism 40 in the figure. It is connected to a printed circuit board (hereinafter referred to as a shutter FPC) 63 by soldering. The electric component 42a in the shutter drive unit 42 is connected to the shutter FPC 63 by soldering.

Further, as shown in FIG. 1 or 2, an annular mounting substrate 64 is attached to the left surface (front surface) of the lens substrate 51 holding the focusing lens unit L4 in the drawing. A focusing motor 53 is connected to the mounting substrate 64 by soldering, and a focusing flexible printed circuit board (hereinafter referred to as a focusing FPC) 65 for connecting the focusing motor 53 to a driver outside the lens barrel is provided. One end is connected.

As shown in the enlarged view of FIG. 4, the focusing FPC 65 is pulled out toward the front of the camera through the space between the camera shake correction device 100 and the lens shutter mechanism 40 and the FPC guide member 54, and the shutter FPC 63.
It is folded back in the state of being overlapped with. Here, the FPC 63 for each shutter and the F for focusing
A conductive pattern is formed on the surface of PC65,
A surface (coverlay surface) 63 on which this conductive pattern is formed
a and 65a are the soldering surface (left surface) 64 of the mounting board 64.
Also, FPCs 63 and 65 are connected to the mounting substrate 64 and the vibration isolation FPC 61 so as to face the same direction as the pattern surface of the vibration isolation FPC 61. Therefore, each FPC 63,
Reference numeral 65 indicates that the cover lay surface of the FPC 65 and the back surface of the FPC 63 (a surface on which no conductive pattern is formed, which will be referred to as a base surface hereinafter) are overlapped with each other.

As shown in FIG. 1 or 2, the FPCs 63 and 65 are bent toward the rear of the camera and are held in a state of being overlapped with each other, while the FPC guide member 54 is being held.
After passing through the space between the lens substrate 45 and the lens substrate 45, and being bent back toward the camera, the lens barrel is passed through the space between the FPC guide member 56 and the cam barrel 3 located above. Of the FPC 63, 65, and the front end portions of the FPCs 63, 65 are guided to the upper portion of the camera body 1. FPC63,
The tip portion of 65 is pressure-contacted to an electric board 66 fixed to the upper portion of the camera body 1 via a pressing plate 67 and a mounting screw 68 on the electric board 66.

Since the camera of this embodiment is constructed as described above, when the cam barrel 3 is rotated through the gear GR, the cam grooves 3a, 3b,
In order for 3c to move, each cam follower 45a, 5a,
Lens holder 45, lens substrates 5, 51 via 53a
Are respectively driven in the optical axis direction, whereby the lens groups L1 to L4 are driven between the wide-angle position shown in FIG. 1 and the telephoto position shown in FIG. 2 for zooming. Since the FPCs 63 and 65 are appropriately deformed as shown in the drawing in accordance with this zooming, an unreasonable load is not applied to the lens groups L1 to L4.

Next, the vibration isolation FPC 61 and the shutter FPC
The solder bridge portion of the PC 63 will be described. Figure 5
FIG. 4 is a development view showing the surface (conductive pattern surface) of the vibration isolation FPC according to the present embodiment. The vibration isolation FPC 61 has four connection end portions 6 to which the photo interrupter 32 is soldered.
1e and the connection end 61f to which the motor 21 is soldered
And a hole 61 for escaping a part of the protrusion of the drive unit 42.
g, a hole 61h that fits into a positioning pin (not shown) protruding from the lens shutter mechanism 40, a hole 61i for a solder bridge, a conductive pattern 61j shown by a shaded portion surrounded by a dotted line, and a straight portion 61k. Have been formed.

FIG. 6 is a perspective view showing in detail the image stabilizing FPC attached to the image stabilizing apparatus according to this embodiment, and shows only members related to the image stabilizing FPC 61. The connection end 61e includes four photo interrupters 32.
On the other hand, they are soldered so as to be sandwiched from the front and back. The connection end 61f is soldered to the terminal of the motor 21 from the front side of the camera. Further, the vibration isolation FPC 61 is
The straight line portion 61k passes through the lower portion of the camera and is bent at the front side of the lens shutter mechanism 40, so that the FPC 63 for the shutter is provided.
It is solder bridge.

FIG. 7 is a shutter FPC according to this embodiment.
FIG. 3 is a plan view showing the surface of the tip portion of FIG. FPC for shutter
63 has a ring-shaped tip portion, and the driving portion 42
A hole 63e for escaping a part of the protrusion, a positioning hole 63f, a soldering hole 63g having a conductive pattern portion connected to the electric component 42a, and a conductive pattern 63h shown by hatching. . Conductive pattern 63
Although not shown, h and the conductive pattern of the soldering hole 63g are connected to the electric board 66 by a conductive line formed on the shutter FPC 61.

FIG. 8 shows a shutter FPC according to this embodiment.
FIG. 6 is a perspective view showing a state in which the image stabilizing FPC is solder-blended on the front surface of the lens shutter mechanism, and each FPC has a front surface. FPC 63 for shutter and F for vibration isolation
The position of the PC 61 is positioned by positioning pins (not shown) provided in the lens shutter mechanism 40 through the positioning holes 63f and 61h, respectively. In this state, the hole 61i is superposed on the conductive pattern 63h. Further, the conductive patterns 61j1 and 63h1 are arranged at adjacent positions. Therefore, the conductive patterns 61j and 6
3h is solder-bridged on the two FPCs 61 and 63. In this way, the required lines are connected together.

The present invention is not limited to the embodiments described above, and various modifications and changes are possible, which are also included in the present invention. For example, in the above-described embodiment, as shown in FIG. 9A, the first wiring board and the second wiring board are electrically connected by the vertical surface of the lens unit of the lens group L2 having the smallest diameter. As described in the example, as shown in FIG.
You may make it connect two 2nd, 3rd wiring boards with respect to a 1st wiring board. Further, the second and third wiring boards may be connected in series as shown in FIG. Further, the second and third wiring boards are not limited to those for image stabilization, lens shutter, and focusing, but other components of the camera, for example, FIG.
As shown in (D), it may be for a lens barrier LB or the like.

On the other hand, the wiring boards are connected to each other by
It may be on the periphery of the lens unit, may be on the circumference as shown in FIG. 9 (E) in addition to the plane perpendicular to the optical axis, and may not be the lens unit of the smallest lens unit L2 The connection may be made around the lens unit of the relatively small lens unit L3.

[0032]

As described in detail above, according to the present invention, the wiring boards are electrically connected to each other in the periphery of the lens group having a small diameter, so that no special space is required. The camera can be made compact.

Further, since the periphery of the lens unit having a small lens group, for example, the surface perpendicular to the optical axis formed on the lens unit is used, a large space can be used in plan view. Therefore, many connections are possible, and since a large flat surface is used, electrical connection work such as soldering is facilitated, and work efficiency is improved.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a camera (zoom camera) integrated with a lens barrel in a present embodiment (a state where the lens barrel is in a wide-angle position).

FIG. 2 is a side sectional view showing a camera (zoom camera) integrated with a lens barrel in the present embodiment (a state in which the lens barrel is at a telephoto position).

FIG. 3 is a cross-sectional view orthogonal to the optical axis, showing the image stabilizing apparatus according to the present embodiment.

FIG. 4 is an enlarged view showing an FPC connection structure in the present embodiment.

FIG. 5 is a development view showing a conductive pattern surface of a vibration isolation FPC in the present embodiment.

FIG. 6 is a perspective view showing in detail an image stabilizing FPC attached to the image stabilizing apparatus according to the present embodiment.

FIG. 7 is a plan view showing the surface of the front end portion of the shutter FPC in this embodiment.

FIG. 8 is a shutter FPC and a vibration isolation F in the present embodiment.
FIG. 6 is a perspective view showing a state in which a PC is solder-riched.

FIG. 9 is a schematic view showing another embodiment of the electric board connection structure of the camera according to the present invention.

[Explanation of Codes] 40 Lens Shutter Mechanism 100 Image Stabilizer 61 Vibration-proof FPC 63 Shutter FPC 64 Focusing FPC

Claims (5)

[Claims] 1. A plurality of lens groups arranged in a lens barrel, a lens unit for supporting each lens group, and a lens unit arranged between an electric board provided in a camera body and the lens barrel. In a camera including a first wiring board and a second wiring board arranged inside the lens barrel, the first wiring board and the second wiring board are included in the lens group. An electric board connection structure for a camera, which has a small diameter but is connected at the periphery. 2. The electric board connection structure for a camera according to claim 1, wherein the first wiring board and the second wiring board are electrically connected to each other in a plane perpendicular to an optical axis formed in the lens unit. An electric board connection structure for a camera, which is connected to the. 3. A plurality of lens groups arranged in the lens barrel, a lens unit supporting each of the lens groups, a lens unit arranged between the electric board provided in the camera body and the lens barrel. In a camera including a first wiring board and second and third wiring boards arranged inside the lens barrel, the second wiring board and the third wiring board are the lens groups. The electrical board connection structure of the camera, characterized in that the one having the smaller diameter is connected at the periphery. 4. The electric board connection structure for a camera according to claim 3, wherein the second wiring board and the third wiring board are electrically connected to each other in a plane perpendicular to an optical axis formed in the lens unit. An electric board connection structure for a camera, which is connected to the. 5. An anti-vibration unit having an anti-vibration lens group in a lens barrel, a shutter unit integrated with a lens group having a smaller diameter than that of the anti-vibration lens group, and a camera body. A camera including a shutter wiring board connecting an electric board and electric parts of the shutter unit, and a vibration prevention wiring board connecting electric parts of the vibration isolation unit, wherein the shutter wiring board and the vibration prevention wiring An electric board connection structure for a camera, wherein the boards are electrically connected on a surface that is formed near a lens group of the shutter unit and is substantially perpendicular to an optical axis.