JP2008225430A - Lens barrel unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a holding structure of a substrate connecting device for arranging a camera main body component without being affected by a through hole for exposing a connection member for electric connection and a substrate to the outside, and reducing a camera thickness. <P>SOLUTION: A fixed cylinder 13 is provided with a holding portion 13b in an inclined surface shape, and a connector 15 for electrically connecting a shutter flexible board and a lens barrel flexible board to each other is held while being inclined to an optical axis of photography along the holding portion 13b of the fixed cylinder 13. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a connector holding structure for electrically connecting substrates.

  2. Description of the Related Art Conventionally, in a connector holding structure that electrically connects substrates, a lens driving unit that drives a lens is fixed to an outer peripheral side surface of a photographing lens barrel as shown in Japanese Patent Application Laid-Open No. 2004-248101.

  Behind this lens driving section (on the image sensor side), the imaging substrate is fixed to the outer peripheral side surface of the fixed frame constituting the photographing lens barrel so as to be parallel to the photographing optical axis.

Some of the imaging boards have an electrically connected connector arranged near the lens driving unit so as to be parallel to the imaging optical axis and fixed to the imaging board by soldering.
JP 2004-248101 A (page 13, FIG. 3)

  However, in Patent Document 1 (Japanese Patent Application Laid-Open No. 2004-248101), since the connector is disposed so as to be parallel to the photographing optical axis and disposed near the lens driving unit, the photographing lens barrel is arranged. When the board placed in the unit is connected from the front when connecting to this connector and the connector cannot be moved backward, it is necessary to move the lens drive part forward and reduce the thickness of the camera The problem that it becomes difficult occurs.

  Therefore, according to the present invention, it is possible to dispose the camera body parts without being affected by the electrically connecting connecting member and the through hole for exposing the substrate to the outside, and to reduce the thickness of the camera. It is an object of the present invention to provide a holding structure for a substrate connecting apparatus.

  The lens barrel unit of the present invention electrically connects the first substrate disposed in the barrel, the second substrate disposed outside the barrel, the first substrate, and the second substrate. In a lens barrel unit that has a connection member connected to the lens, and is arranged in parallel to the imaging optical axis, and is fixed to a holding portion of a fixing member constituting the lens barrel, one side of the connection member is connected to the imaging light. It fixes to the holding part of the said fixing member in the state inclined in the axial direction, It is characterized by the above-mentioned.

  As described above, according to the present invention, it is possible to arrange the camera body parts without being affected by the electrically connecting connecting member and the through hole for exposing the substrate to the outside. The thickness can be reduced.

  Hereinafter, Embodiment 1 of the present invention will be described in detail with reference to the drawings. First, the configuration of the lens barrel unit according to the present embodiment will be described with reference to FIGS. 1 to 5.

  A shutter unit 1 controls exposure and is disposed in the lens barrel 7. A photographing lens 2 is supported on the shutter unit 1, and three cam followers 1a are provided on the outer periphery, and are respectively slidably fitted into cam grooves 17a of a cam cylinder 17 shown in FIG.

  Reference numeral 3 denotes a shutter flex as a first substrate, which is disposed in the lens barrel along the outside (outer periphery) of the shutter unit 1 and is soldered to the shutter actuator 18.

  The shutter flex 3 as the first substrate is provided with a connecting portion 3a for connecting to a connector 15 described later, and is exposed to the outside from a through hole 13a of a fixed cylinder 13 as a fixing member as shown in FIG. It is supposed to be.

  Reference numeral 4 denotes a fixed ground plate that supports the focus drive mechanism 5, zoom drive mechanism 6, lens barrel 7, and image sensor 19.

  Reference numeral 5 denotes a focus driving mechanism that performs a focusing operation. The focus drive mechanism 5 has a focus motor 8 fixed to the fixed base plate 4. Furthermore, a power transmission reduction gear train (not shown) that transmits the rotational force of the focus motor 8 to the screw screw 10 and a screw screw 10 that moves the focus lens unit 9 forward and backward in the optical axis direction are configured.

  Reference numeral 6 denotes a zoom drive mechanism that performs a focus switching operation, and includes a zoom motor 11 fixed to the fixed base plate 4 and a power transmission reduction gear train 12 that transmits the rotational force of the zoom motor 11 to the cam cylinder 17.

  The power transmission reduction gear train 12 is rotatably supported by the fixed base plate 4 and is held by a fixed cylinder 13.

  Reference numeral 13 denotes a fixed cylinder as a fixed member that supports the lens barrel 7 and the power transmission reduction gear train 12 and is fixed to the fixed base plate 4 by screws (not shown).

  On the side surface of the fixed cylinder 13 as the fixing member, a through-hole 13a that exposes the connection part 3a of the shutter flexible board 3 as the first substrate, a holding part 13b that holds the connector 15, and a lens barrel flexible 14 A shaft 13c and a recess 13d (see FIG. 3) are formed.

  In the holding unit 13b, the distance L1 between the subject side end and the photographing optical axis is shorter than the distance L2 between the imaging side end and the photographing optical axis. That is, the subject side end, which is one side of the holding portion 13b, is an inclined surface that is inclined at a constant angle in the photographing optical axis direction.

  Reference numeral 14 denotes a lens barrel flexible as a second substrate. As shown in FIGS. 3 and 4, the lens barrel flexible 14 as the second substrate is disposed outside (outer periphery) of the fixed base plate 4 and the fixed barrel 13. The focus motor 8, zoom motor 11, connector 15, photo The interrupter 16 is soldered.

  In the lens barrel flexible 14, a hole 14 b that fits into the shaft 13 c of the fixed cylinder 13 and a protrusion 14 c that is inserted into the recess 13 d of the fixed cylinder 13 are formed so as to sandwich the connector 15. In addition, a connection portion 14 a that connects to the substrate 25 is provided.

  Reference numeral 15 denotes a connector as a connecting member used for electrical connection between the shutter flexible cable 3 and the lens barrel flexible cable 14. The connector 15 as a connecting member is soldered to the lens barrel flexible 14, and the connecting portion 3a of the shutter flexible 3 is inserted. The connector 15 is attached in a state where one side thereof is inclined along the holding portion 13 b of the fixed cylinder 13. The connector 15 as a connecting member is arranged in parallel with the photographing optical axis.

  Next, the connector holding method according to the present embodiment will be described with reference to FIGS. As shown in FIGS. 3 and 4, the hole 14 b of the lens barrel flex 14 as the second substrate in the vicinity of the connector 15 disposed outside (outer periphery) of the fixed base plate 4 and the fixed tube 13 is an axis c of the fixed tube 13. It is press-fitted into. Accordingly, the protrusion 14 c of the lens barrel flexible 14 is fixed to the fixed cylinder 13 by being inserted into the concave portion 13 d of the fixed cylinder 13.

  By this fixing, the lens barrel flexible 14 around the connector 15 is held in a state of being tilted along the holding portion 13 b of the fixed cylinder 13. Similarly, the connector 15 soldered to the lens barrel flexible 14 is also held in an inclined state along the holding portion 13 b of the fixed cylinder 13.

  In addition, the connecting portion 3a of the shutter flex 3 as the first substrate that penetrates the through hole 13a of the fixed tube 13 and is exposed to the outside is also inserted into the connector, and is inclined along the holding portion 13b of the fixed tube 13 It becomes.

  Next, a state in which the lens barrel unit is incorporated in the camera body according to the present embodiment will be described with reference to FIGS.

  The lens barrel unit 20 is fixed to the main body 21 with screws (not shown). A battery case 22, a finder unit 23, and a strobe unit 24 are disposed around the lens barrel unit 20 fixed to the main body 21.

  The connector 15 fixed to the lens barrel unit 20 is disposed in a part of the gap SK formed between the fixed cylinder 13 and the battery case 22.

  A main board 25 is disposed in front of the battery case 22 and the connector 15 (subject side) as shown in FIG.

  At this time, the connector 15 and the connection portion 3 a of the shutter flexible cable 3 are held in a state of being inclined along the holding portion 13 a of the fixed cylinder 13. For this reason, the through-hole 13a of the fixed cylinder 13 which penetrates the connection part 3a of the shutter flex 3 can be lowered to the image plane side. Therefore, the main substrate 25 disposed in front of the connector 15 can also be disposed to be lowered toward the image plane.

  As described above, the connector 15 that electrically connects the shutter flexible cable 3 and the lens barrel flexible cable 14 is held in an inclined state along the holding portion 13b having the inclined surface shape of the fixed cylinder 13. Thus, the through hole 13a of the fixed cylinder 13 that penetrates the connecting portion 3a of the shutter flexible cable 3 can be lowered to the image plane side. Further, the main substrate 25 disposed in front of the connector 15 can also be disposed to be lowered toward the image plane.

  This eliminates the influence of the height of the electrical components attached to the main board 25, thereby reducing the thickness of the camera.

  In the present embodiment, the main board 25 is arranged in front of the connector 15, but it may be a component constituting the camera body.

It is a perspective view which shows the shutter unit which concerns on Embodiment 1 of this invention. It is a partial exploded perspective view which shows the lens-barrel unit structure which concerns on Embodiment 1 of this invention. It is a front view which shows the lens-barrel unit which concerns on Embodiment 1 of this invention. It is a bottom view which shows the lens-barrel unit which concerns on Embodiment 1 of this invention. It is AA sectional drawing of FIG. 3 which shows the connector holding method which concerns on Embodiment 1 of this invention. It is a front view which shows the state in which the lens-barrel unit which concerns on Embodiment 1 of this invention was integrated in the camera main body. It is a front view which shows the state by which the main board | substrate was integrated in the state of FIG. 6 which concerns on Embodiment 1 of this invention. FIG. 5 is a cross-sectional view taken along the line B-B in FIG. 3 showing the height relationship between the connector and the main board according to the first embodiment of the present invention.

Explanation of symbols

1 Shutter unit 3 Shutter flexible (first board)
3a connection part 4 fixed ground plate 13 fixed cylinder (fixing member)
13a Through-hole 13b Holding part 13c Shaft 13d Concave part 14 Flexible lens barrel (second substrate)
14b hole 14c protrusion 15 connector (connecting member)
25 Main board (camera body parts)

Claims (2)

A first substrate disposed in the lens barrel; a second substrate disposed outside the lens barrel; and a connecting member for electrically connecting the first substrate and the second substrate; In the lens barrel unit in which the connection member is arranged in parallel with the photographing optical axis and fixed to the holding portion of the fixing member that constitutes the lens barrel.
A holding structure for a board connecting device, wherein one side of the connecting member is fixed to a holding portion of the fixing member in a state where one side of the connecting member is inclined in the photographing optical axis direction.   2. The lens barrel unit according to claim 1, wherein one side of the holding portion of the fixing member has an inclined surface shape that is inclined in the photographing optical axis direction.

Images