JP2008129291A - Flexible board holding device and device for driving camera blade - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flexible board holding device and a camera blade driving device capable of preventing deterioration in operability. <P>SOLUTION: The device for driving camera blade includes a shutter board 10 having an aperture 11; an actuator unit 20 for actuating blades for opening/closing the aperture 11; a flexible printed board 30, including a fixed area fixed to the shutter board 10 and a non-fixed area 30c, extending from the fixed area held by the shutter board 10; and a conductive wire 21 for electrically connecting between the flexible printed board 30 and the actuator unit 20. The fixed area of the printed board 30 includes a first fixed area 30a whose rear side is stuck on the shutter board 10 with a double-coated tape and whose front side has soldering parts 40 that are electrically connected to the wire 21; and a second fixed area 30b, fixed to the shutter board 10 in a mutually overlapped state, being folded back by a fixed projection part 22, and located in a part retreating from a connecting part 33. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a flexible substrate holding device and a camera blade driving device.

As a camera blade driving device, there is a device provided with a substrate having an opening, a blade for opening and closing the opening, and an actuator for driving the blade (see Patent Document 1).
FIG. 4 is an explanatory diagram showing a configuration of a conventional shutter substrate. The shutter substrate 110 has an opening 111 for imaging subject light on an image sensor (not shown) at the center thereof. Further, an actuator unit 120 that drives a blade (not shown) is fixed to the subject side surface of the shutter substrate 110. In addition, the flexible printed circuit board 130 is fixed to the subject side surface of the shutter substrate 110 by a double-sided tape (not shown). The actuator unit 120 is electrically connected to the flexible printed circuit board 130 via a coil wire 121 extending from the actuator unit 120. In addition, the end portion of the coil wire 121 is connected to the surface of the flexible printed circuit board 130 by a solder portion 140. The other end of the flexible printed circuit board 130 is electrically connected to an external device. Thereby, the drive of the actuator unit 120 is controlled by the electrical signal from the external device.

JP 2005-250297 A

  However, as shown in FIG. 4, since the end portion of the flexible printed board 130 extends outward from the shutter board 110, for example, the flexible printed board 130 is soldered to the flexible printed board 130 fixed to the shutter board 110. When the operator accidentally pulls the flexible printed circuit board 130 when performing the above work, the flexible printed circuit board 130 fixed by the double-sided tape is displaced from the shutter substrate 110, and the workability is improved. As a result, the coiled wire 121 soldered may be broken. In addition, as a final finished product, when assembling a blade or the like to the shutter substrate 110 to which the flexible printed circuit board 130 is fixed, the flexible printed circuit board 130 comes into contact with something, and the flexible printed circuit board 130 is pulled. In this case, the flexible printed circuit board 130 may be detached from the shutter substrate 110, and the coil wire 121 may be disconnected. When the coil wire 121 is disconnected, it is necessary to replace the parts again, so that the productivity is poor and the product cost increases.

  Therefore, the present invention provides a flexible substrate holding device and a camera blade driving device capable of improving productivity.

The object is to have a base member, a flexible substrate held by the base member having a fixed region fixed to the base member and a non-fixed region extending from the fixed region, and the flexible substrate. And a conductive strand electrically connecting the external device, and the fixing region is fixed so that the back surface is attached to the base member, and the front surface is electrically connected to the strand. A flexible substrate holding device comprising: a first fixed region having a connecting portion; and a second fixed region that is folded and overlapped with each other to be fixed to the base member. .
With this configuration, for example, even when the location of the non-fixed region of the flexible substrate is pulled for some reason, the flexible substrate is folded and overlapped with each other in the second fixed region. Since it is fixed to the member, the same action as that of the flexible substrate being fixed at two places is performed, and it is possible to suppress the tension due to the tension being transmitted to the first fixing region. Therefore, disconnection of the strand connected to the connection portion on the first fixed region due to being pulled can be prevented. As a result, it is possible to prevent deterioration in workability during assembly and improve productivity.

Further, the object is to fix the first fixing region by the first fixing member so that the back surface of the first fixing region is attached to the base member, and the portion of the second fixing region retracted from the connection portion is the second. It can be achieved by a flexible substrate holding device that is folded back by the fixing member and fixed to the base member in a state of being overlapped with each other.
With this configuration, the flexible substrate is fixed by the first fixing member so that the back surface is attached to the base member in the first fixing region, and in the second fixing region, the portion retracted from the connection portion Are fixed to the base member in a state of being folded by the second fixing member and overlapping each other. That is, since it is being fixed by two different fixing members, even if the location of the non-fixed region of the flexible substrate is pulled for some reason, it is possible to reliably suppress the transmission to the first fixed region. . Therefore, disconnection of the strand connected to the connection portion on the first fixed region due to being pulled can be reliably prevented.

Further, the above object has a shutter substrate having an opening, a blade driving source for opening and closing the opening, a fixed region fixed to the shutter substrate, and a non-fixed region extending from the fixed region. A holding flexible substrate; and a conductive wire that electrically connects the flexible substrate and the driving source; and the fixed region has a back surface attached to the shutter substrate. A first fixing region having a connection portion that is fixed and has a surface electrically connected to the strand; and a second fixing region that is folded and overlapped with each other to be fixed to the shutter substrate. This can be achieved by a camera blade driving device.
With this configuration, for example, even when the location of the non-fixed region of the flexible substrate is pulled for some reason, the flexible substrate is folded back and overlaps with each other in the second fixed region. Since it is fixed to the substrate, it is possible to suppress the tension due to the tension being transmitted to the first fixing region. Therefore, disconnection of the strand connected to the connection portion on the first fixed region due to the tension can be prevented. Therefore, the camera blade driving device provided by the present invention can prevent deterioration in workability during assembly and improve productivity. In addition, since there is a second fixed area for folding the flexible printed circuit board, the printed wiring on the flexible printed circuit board does not have to be bent suddenly from the first fixed area in order to escape from nearby camera parts. Can be prevented.

Further, the object is to fix the first fixed region by the first fixing member so that the back surface of the first fixed region is attached to the shutter substrate, and the portion of the second fixed region retracted from the connection portion is the second. It can be achieved by a camera blade driving device that is folded back by the fixing member and fixed to the shutter substrate while being overlapped with each other.
With this configuration, the flexible substrate is fixed by the first fixing member so that the back surface of the flexible substrate is attached to the shutter substrate in the first fixing region. In the second fixing region, the portion retracted from the connection portion Are fixed to the shutter substrate in a state of being folded by the second fixing member and overlapping each other. That is, since it is being fixed by two different fixing members, even if the location of the non-fixed region of the flexible substrate is pulled for some reason, it is possible to reliably suppress the transmission to the first fixed region. . Therefore, disconnection of the strand connected to the connection portion on the first fixed region due to being pulled can be reliably prevented. Therefore, the camera blade driving device provided by the present invention can prevent deterioration in workability during assembly and improve productivity.

  According to the present invention, a flexible substrate holding device and a camera blade driving device capable of improving productivity are provided.

Embodiments according to the present invention will be described below with reference to the drawings.
FIG. 1 is an explanatory diagram of a shutter substrate that holds a flexible printed circuit board used in the camera blade driving device according to the present embodiment.

  A shutter substrate 10 as a base member is used for a camera, and an opening 11 is formed at the center thereof to allow light from a subject to be imaged on an image sensor (not shown) to pass therethrough. Further, a blade (not shown) that opens and closes the opening 11 is disposed on the image pickup element side of the shutter substrate 10 and opens and closes the opening 11 at a predetermined timing. The shutter substrate 10 is formed in a circular shape, and an actuator unit 20 as an external device and a flexible printed circuit board 30 are fixed to a surface on the subject side.

  The actuator unit 20 is a unit including an electromagnetic actuator and supplies driving force to the blades. The actuator unit 20 is disposed on the subject side of the shutter substrate 10. The actuator unit 20 is connected to a blade disposed on the side opposite to the actuator unit 20 disposed on the shutter substrate 10 via an output pin (not illustrated) connected to an output shaft (not illustrated) of the electromagnetic actuator. Supply driving force. Note that an escape hole (not shown) for releasing the rotation of the output pin is formed at a portion of the shutter substrate 10 where the actuator unit 20 is disposed.

  The actuator unit 20 includes a coil wire 21, a rotor (not shown) that is magnetized by a plurality of magnetic poles in the circumferential direction, and is rotatably supported. It is composed of a stator (not shown) that generates magnetic force. The coil wire 21 is wound around a stator in the actuator unit 20, and an end portion thereof is drawn out from the actuator unit 20, and the coil wire 21 is a land portion 33 ( It is a conductive wire that is made conductive by soldering to a connection portion.

  The flexible printed circuit board 30 has flexibility, and electrically connects the actuator unit 20 as an external device and another external device. The flexible printed circuit board 30 includes a first fixed area 30a, a second fixed area 30b, and a non-fixed area 30c. The first fixed region 30 a is fixed to the shutter substrate 10 in an arc shape along the outer contour of the shutter substrate 10. The back surface of the first fixing region 30a is affixed to the shutter substrate 10 with a double-sided tape (first fixing member, not shown).

  A land portion 33 is provided on the surface of the first fixed region 30 a, and the coil wire 21 is soldered and electrically connected to the flexible printed board 30. The area where the back surface of the flexible printed circuit board 30 faces the shutter circuit board 10 and is fixed by a double-sided tape and the front surface is electrically connected to the actuator unit 20 via the coil wire 21 is the first area. 1 fixed region 30a. The solder part 40 is provided near the outer peripheral edge of the shutter substrate 10 so that the secondary light reflected from the solder part 40 does not enter the opening 11. For this reason, the flexible printed board 30 itself is also arranged near the outer peripheral edge of the shutter board 10.

  Further, the portion of the flexible printed circuit board 30 that has been retracted from the fixing region 30 a provided with the solder portion 40 extends toward the opening 11, and the extended portion is folded back in a direction away from the opening 11 before the opening 11. ing. The folded portion is fixed to the shutter substrate 10 by a fixing protrusion 22 (second fixing member). In addition, the flexible printed circuit board 30 is disposed so as to extend from the portion fixed by the fixed protrusion 22 to the outside of the shutter substrate 10.

  A region fixed to the shutter substrate 10 in a state of being folded back by the fixing projection 22 and overlapping each other in a portion retracted from the fixed region 30a where the land is formed is referred to as a second fixed region 30b. The first fixed region 30a and the second fixed region 30b described above serve as a fixed region for the flexible printed circuit board 30.

  The flexible printed circuit board 30 is fixed to the shutter substrate 10 with a double-sided tape, and is also fixed by a fixed protrusion 22. A region of the flexible printed circuit board 30 extending from the fixed protrusion 22 to the outside of the shutter substrate 10 is defined as a non-fixed region 30c. In the non-fixed region 30c, the flexible printed circuit board 30 is not fixed to the shutter substrate 10.

  Next, a procedure for fixing the flexible printed board 30 to the shutter board 10 will be described. 2 and 3 are explanatory views showing a state in the middle of fixing the flexible printed board 30 to the shutter board 10. First, a flexible printed circuit board 30 formed in a crisp shape is affixed to the subject side surface of the shutter substrate 10 where the actuator unit 20 is not installed. In this state, the fixed projection 22 is formed on the subject-side surface of the shutter substrate 10 higher than the fixed projection 22 in the final part shown in FIG. Details will be described later.

  In order to fix the flexible printed circuit board 30 to the shutter substrate 10, as shown in FIG. 2, a double-sided tape is applied in advance to the back surface of the first fixing area 30a, or at the position of the first fixing area 30a. A double-sided tape is affixed to a predetermined portion of the corresponding shutter substrate 10 in advance, and the flexible printed circuit board is attached to the shutter substrate 10 so that the fixed protrusion 22 penetrates the hole 31 formed in the second fixed region 30b. 30 is fixed.

  In the second fixing region 30b, two holes, a hole 31 and a hole 32, are formed at a predetermined interval. First, the second fixing region 30b is fixed to the hole 31 closer to the first fixing region 30a. The protrusion 22 is penetrated.

  Next, as shown in FIG. 3, the non-fixed region 30 c is drawn toward the side where the fixed projection 22 is provided, and the second fixed region 30 b is inserted so that the hole 32 penetrates the fixed projection 22. Bend at the part. In this state, the tip of the fixed projection 22 is pressed against the shutter substrate 10 so as to melt the tip by heat caulking and crush the tip. As a result, the distal end portion of the fixed protrusion 22 is crushed to be in the state of the fixed protrusion 22 shown in FIG. 1, and the flexible printed board 30 is fixed by the fixed protrusion 22. Here, the fixed protrusion 22 may be provided near the outer periphery for miniaturization. Thereafter, the actuator unit 20 is fixed at the position where the escape hole 12 is formed, and soldered in a state where the coil wire 21 is in contact with the land portion 33, thereby completing the final part.

  In this manner, the flexible printed circuit board 30 is fixed to the shutter substrate 10 by heat caulking the fixing protrusion 22 in the state shown in FIG. Thereafter, the actuator unit 20 is installed, and the coil wire 21 is brought into contact with the land portion 33 and soldered. For this reason, for example, even when the operator accidentally pulls the non-fixed region 30c during the soldering operation or the subsequent assembly operation, the second fixed region 30b is folded back. In this state, the flexible printed circuit board 30 is fixed, and the back surface of the first fixed region 30a is fixed to the shutter substrate 10 by the double-sided tape. Therefore, the second fixed region 30b has only one place. Rather than being fixed, the flexible printed circuit board 30 can be more firmly fixed to the shutter substrate 10, and the first fixed region 30a can be suppressed from being pulled. Therefore, disconnection of the coil element wire 21 can be prevented, and deterioration of workability can be prevented since there is no need to replace parts. Moreover, product cost can be reduced and productivity can be improved.

  Further, even after the completion as the final part, even when the non-fixed region 30c is pulled, it is suppressed that the first fixed region 30a is pulled. And productivity can be improved. Further, when the camera is attached to the camera as a final part, a camera part such as a lens barrel may come into contact with the shutter substrate 10. In such a case, if there is no second fixed region 30b for folding the flexible printed circuit board 30, the flexible printed circuit board 30 is located closer to the outer peripheral edge of the shutter substrate 10, and therefore the first fixed region 30a is suddenly moved away from the non-fixed region 30c. It is necessary to stand up and be released from the camera parts that are in contact. If the flexible printed circuit board 30 is suddenly bent in this manner, the printed wiring in the circuit board may be disconnected. If there is the second fixed region 30b at which the flexible printed circuit board 30 is folded back on the opening 11 side, it is not necessary to bend suddenly from the first fixed region 30a even when the camera component is in contact with the shutter substrate 10 as described above. The disconnection of the printed wiring on the flexible printed circuit board 30 can be prevented.

  Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to such specific embodiments, and modifications and changes can be made within the scope of the gist of the present invention described in the claims. Is possible.

  In the above embodiment, the case where the number of the fixed protrusions 22 is one has been described. In this case, the positional accuracy of the non-fixed region 30c of the flexible printed board 30 with respect to the shutter board 10 is improved, and the flexible printed board 30 can be fixed to the shutter board 10 more reliably.

  In the above-described embodiment, the flexible printed circuit board 30 is fixed to the shutter substrate 10, the actuator unit 20 is fixed to the shutter substrate 10, and the coil wire 21 is soldered to the land portion 33. May be fixed to the shutter substrate 10, the flexible printed circuit board 30 may be fixed to the shutter substrate 10, and the coil wire 21 may be soldered to the land portion 33.

  The non-fixed region 30c may have a shape that covers the solder portion 40. In this case, not only the disconnection of the coil wire 21 but also the secondary light from the subject side reflected from the solder portion 40 enters the opening 11. Can be prevented.

  In the above-described embodiment, the camera blade driving device in which the shutter substrate 10 is on the subject side has been described in detail, but the shutter substrate 10 may be on the image sensor side.

  In the above embodiment, the camera blade driving device in which the flexible printed circuit board 130 is fixed to the shutter substrate 10 with a double-sided tape (not shown) has been described in detail, but the present invention is not limited to such a configuration. For example, it may be fixed by an adhesive, or may be fixed by providing a fixing protrusion separately and crushing the tip of the protrusion with heat caulking.

  In the second fixing region 30b, the flexible printed circuit board 30 is fixed to the shutter substrate 10 by crushing the tip of the fixing protrusion 22 with heat caulking. However, the configuration is not limited to this. For example, you may fix using an adhesive agent or a double-sided tape.

It is explanatory drawing of the shutter board | substrate holding a flexible printed circuit board. It is explanatory drawing which showed the state in the middle of fixing a flexible printed circuit board to a shutter board | substrate. It is explanatory drawing which showed the state in the middle of fixing a flexible printed circuit board to a shutter board | substrate. It is explanatory drawing of the conventional shutter board | substrate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Shutter board 11 Opening 12 Escape hole 20 Actuator unit 21 Coil element wire 22 Fixed projection part 30 Flexible printed circuit board 30a 1st fixed area | region 30b 2nd fixed area | region 30c Non-fixed area | region 31, 32 Hole part 33 Land part 40 Solder part

Claims (4)

A flexible substrate held on the base member having a base member, a fixed region fixed to the base member, and a non-fixed region extending from the fixed region; the flexible substrate and an external device; A conductive wire that electrically connects
The fixed region is folded so as to be overlapped with the first fixed region having a connection portion where the back surface is fixed to be attached to the base member and the front surface is electrically connected to the element wire. And a second fixed region fixed to the base member.   The first fixing region is fixed by a first fixing member so that a back surface is attached to the base member, and the second fixing region is formed by a second fixing member at a portion retracted from the connection portion. The flexible substrate holding device according to claim 1, wherein the flexible substrate holding device is fixed to the base member in a state of being folded and overlapping each other. A shutter substrate having an opening, a blade driving source that opens and closes the opening, a fixed region that is fixed to the shutter substrate, and a non-fixed region that extends from the fixed region. A substrate, and a conductive wire that electrically connects the flexible substrate and the drive source,
The fixed region is folded so as to be overlapped with the first fixed region having a connection portion where the back surface is fixed to be attached to the shutter substrate and the front surface is electrically connected to the wire. And a second fixed region fixed to the shutter substrate.   The first fixing region is fixed by a first fixing member so that a back surface is attached to the shutter substrate, and the second fixing region is formed by a second fixing member at a portion retracted from the connection portion. The camera blade driving device according to claim 3, wherein the camera blade driving device is fixed to the shutter substrate in a folded state and overlapped with each other.

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