JP2016138927A - Lens barrel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lens barrel in which flexibility of arrangement of a slide member can be increased using a connection member having a plurality of slide parts, and also flexibility of arrangement of the slide member can be increased using the connection member having the slide parts formed according to a plurality of guide rails, then the slide member can slide smoothly.SOLUTION: The lens barrel comprises; a pedestal 4 retained in an exterior member 3; and switch members 5a, 5b, 5c as three slide members slidably retained in the pedestal 4. The pedestal 4 comprises three guide rails 432, 442, 452. Respective switch members 5a, 5b, 5c comprise operation members 51a, 51b, 51c, and connection members 52 connected to the operation members, respectively. Moreover, the connection members 52 comprise a first slide part 524a and a second slide part 524b which are selectively used according to the respective guide rails 432, 442, 452 and slide the guide rails 432, 442, 452.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a lens barrel.

  2. Description of the Related Art Conventionally, there has been known a lens barrel including a pedestal held on the outer periphery of an exterior member and a plurality of switch members as slidable members slidably held on the pedestal. For example, in Patent Document 1, a switch cover (pedestal) held on the outer periphery of a lens barrel mount mounting frame (exterior member), and a switch member that is slidably held by the switch cover and turns on / off the macro photography mode. In addition, a device including a changeover switch member that switches between an autofocus mode and a manual mode is disclosed.

  Such a switch member includes, for example, an operating member that is slidably operated from the outer peripheral side of the pedestal, and a connecting member that is disposed on the inner peripheral side of the pedestal and is connected to the operating member. In many cases, one having a slide portion that slides on a guide rail provided on the inner peripheral surface has been conventionally implemented. By configuring the switch member in this way, the switch member can be easily slidably attached to the base.

JP 2011-64970 A

  However, as described above, since the connecting member of the switch member has only one slide portion, when a plurality of switch members are arranged on the pedestal, if the same shape connecting member is used, the pedestal of the plurality of switch members is provided. The arrangement position in is determined to some extent, and the degree of freedom in arrangement is small. Therefore, the position of the guide rail on the pedestal or the position of each detection unit for detecting the position of each switch member provided on the pedestal is determined according to the shape of the connecting member. For example, the flexible connecting to each of the detection units It may be difficult to wire the printed wiring board. On the other hand, if a connecting member having a different shape is used, the connecting member cannot be easily formed, resulting in an increase in manufacturing cost.

  In addition, when a plurality of switch members are arranged along the outer periphery of the exterior member and slid along the optical axis direction, the outer member is formed on the inner peripheral surface of an arc-shaped base manufactured by molding. A plurality of guide rails having guide surfaces have different slopes due to restrictions in the mold drawing direction. Therefore, the slide part slides smoothly on each guide surface when the connecting part has a specific shape. It is hard to do.

  The present invention can increase the degree of freedom of arrangement of the sliding member by using a connecting member having a plurality of slide portions, and can slide using a connecting member having slide portions formed corresponding to the plurality of guide rails. An object of the present invention is to provide a lens barrel that can increase the degree of freedom of arrangement of the moving member and can slide smoothly.

  A lens barrel according to an aspect of the present invention includes a cylindrical exterior member, a pedestal held by the exterior member, and a plurality of sliding members slidably held by the pedestal. Includes a number of guide rails corresponding to the sliding members, and each sliding member includes an operating member that is slidably operated from an outer peripheral side of the pedestal, and a connecting member that is connected to the operating member. The connecting member includes a slide portion that slides on the guide rails, and the slide portion includes a plurality of slide members that can be selectively used according to the guide rails. To do.

  According to this, since the connecting member includes a plurality of slide portions, and any one of the slide portions is selectively used according to the guide rail, the degree of freedom of arrangement of the plurality of slide members on the pedestal. Is increased. Thereby, the freedom degree of arrangement | positioning of the guide rail in a base becomes high, for example, and even when a flexible printed wiring board is wired to a base, for example, it becomes easy to wire a flexible printed wiring board. On the other hand, the connecting member having the same shape may be formed, and the manufacturing cost can be reduced. Further, by using the connecting member having the same shape, the operating force becomes uniform, and a high-quality usability can be obtained.

  In another aspect, the lens barrel includes a cylindrical exterior member, a pedestal held by the exterior member, and a plurality of sliding members slidably held by the pedestal. Is provided with a pedestal main body having an outer peripheral surface and an inner peripheral surface formed on an arcuate surface, and a number of guide rails corresponding to the sliding member on the inner peripheral surface of the pedestal main body, An operating member that is slidably operated from the outer peripheral side of the pedestal, and a connecting member that is disposed on the inner peripheral surface side of the pedestal and is connected to the operating member, wherein the connecting member slides on each guide rail. The slide portion is formed so as to correspond to the shape of each guide rail, and the pedestal body and the guide rail are formed by integral molding with a molding die, and each guide rail is The sliding part slides. Comprising a de surface, the guide surface is a surface along the die cutting direction of the mold during molding, or, characterized in that it is a surface having a draft angle with respect to the die-cut direction. Preferably, the guide surface is a surface having no undercut.

  According to this, the base body having the outer peripheral surface and the inner peripheral surface formed on the circular arc surface and the plurality of guide rails can be easily formed using the molding die, and the base can be formed at low cost.

  In another aspect, in the lens barrel, the guide surface includes at least two different draft angles.

  According to this, since the guide surface is provided with at least two with different draft angles, it can be formed more easily using the mold. Further, slide portions are formed according to the gradient of the guide surfaces, and the slide portions smoothly slide on the respective guide surfaces.

  In another aspect, in the lens barrel, the pedestal body includes an operation member moving hole formed so as to penetrate from the outer peripheral surface to the inner peripheral surface, and the operation member is used for moving the operation member. A shaft portion movably inserted in the hole, wherein the slide portion is a surface substantially parallel to the axial direction of the shaft portion, and the guide surface is substantially parallel to the axial direction of the shaft portion. It is characterized by being formed.

  According to this, for example, the guide surface and the slide portion are easily brought into surface contact, and the slide portion slides smoothly on the guide surface. Thereby, the touch when the slide part slides on the guide surface can be improved, and the durability between the guide surface and the slide part can be improved.

  In another aspect, in the lens barrel, the pedestal includes an engagement positioning unit that positions the sliding member with respect to the pedestal, and a detection unit that detects a position of the sliding member with respect to the pedestal. The connecting member is formed at one end of the connecting member and engaged with the detecting portion; and the connecting member is formed at the other end of the connecting member and freely engageable with the engaging positioning portion. And a second engaging portion that engages with the connecting member, and the slide portion is formed at the other end of the connecting member.

  According to this, since the first engaging portion is formed at one end portion of the connecting member and the slide portion and the second engaging portion are formed at the other end portion of the connecting member, it is easy to form the connecting member. Become. Moreover, the engagement positioning part and the detection part in the base can be formed at a predetermined interval, and the formation of the engagement positioning part and the detection part becomes easy.

  In another aspect, in the lens barrel, the guide rail is disposed on both sides of the engagement positioning portion with the engagement positioning portion interposed therebetween, and the slide portion sandwiches the second engagement portion. It arrange | positions at the both sides of the said 2nd engaging part, It is characterized by the above-mentioned.

  According to this, when each slide part slides on the guide rail, the slide member slides on both sides of the second engagement part, and there is little possibility that the slide part tilts with respect to the guide rail, and each slide part stabilizes the guide rail. Can slide. Further, the length in the width direction from one end to the other end of the connecting member can be suppressed, and the connecting member can be downsized.

  In another aspect, in the lens barrel, the connecting member includes a biasing portion that biases the second engagement portion toward the engagement positioning portion.

  According to this, it is possible to give the user a click feeling when the second engagement portion enters the engagement positioning portion, and it is possible to maintain the state where the second engagement portion enters the engagement positioning portion. Further, when the second engagement portion that has entered the engagement positioning portion is applied with a force greater than the urging force, the position of the second engagement portion is changed from the engagement positioning portion.

  In another aspect, in the lens barrel, the connecting member includes a plate-like connecting member main body and an elastic arm portion connected to the connecting member main body, and the second engaging portion includes: It is formed at the tip of the arm part, and the urging part is the arm part.

  According to this, if the connecting member main body and the elastic arm portion are integrally formed, an urging member such as a spring can be eliminated, and the connecting member can be easily formed at low cost.

  In another aspect, in the lens barrel, the connecting member includes a plate-like connecting member main body, and a bent piece bent from the connecting member main body via a stepped portion, and the slide portion includes: It has the 1st slide part formed in the front-end | tip part of the said bending piece, and the 2nd slide part formed in the step part of the bending base end part of the said bending piece, It is characterized by the above-mentioned.

  According to this, formation of a 1st slide part and a 2nd slide part becomes easy.

  The lens barrel of the present invention can increase the degree of freedom of arrangement of the sliding member using a connecting member having a plurality of slide portions, and has a connecting portion having slide portions formed corresponding to the plurality of guide rails. The degree of freedom of the arrangement of the sliding member can be increased by using and can slide smoothly.

It is sectional drawing of the lens barrel of one embodiment of this invention. It is a principal part expanded sectional view which follows the II-II line of FIG. FIG. 2 is a front view of a switch member used in the lens barrel of FIG. 1 and a pedestal holding the switch member. It is a rear view of the base of FIG. It is a front view of a base. (A) is a front view of a connecting member used in the lens barrel of FIG. 1, (b) is a side view of FIG. 6 (a), and (c) is a bottom view of FIG. 6 (a). It is explanatory drawing at the time of shape | molding a base using a shaping | molding die. It is explanatory drawing at the time of releasing a shaping | molding die from the state of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view of a lens barrel according to an embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view of a main part taken along line II-II in FIG. In the following description, the X direction in the figure is the object side, and the Y direction in the figure is the image side.

  As shown in FIG. 1, the lens barrel 1 of this embodiment includes a lens barrel body 2, a cylindrical exterior member 3, a pedestal 4 held by the exterior member 3, and a slidably held by the pedestal 4. And a plurality of switch members (sliding members) 5a, 5b and 5c.

  In this embodiment, the lens barrel body 2 includes fixed cylinders 21a and 21b, lens groups 22a to 22d, a cam cylinder 23, and a reinforcing member 24.

  In this embodiment, the fixed cylinder is a metal cylindrical first fixed cylinder 21a, and a synthetic resin cylindrical first fixedly coupled to the image-side end of the first fixed cylinder 21a by a bolt. 2 fixed cylinders 21b.

  A substrate (circuit board) 27 is attached to the end of the second fixed cylinder 21b on the objective side in the axial direction. The substrate 27 detects, for example, the rotational position of the cam cylinder 23 with respect to the first fixed cylinder 21a, or controls an autofocus drive motor 261, which will be described later. It is connected to electrical components such as a motor 261.

  The second fixed cylinder 21b of this embodiment is fixedly connected to the reinforcing member 24 by a bolt (not shown) while being housed in the inner periphery of the substantially cylindrical reinforcing member 24 made of metal. Yes. In the reinforcing member 24 of this embodiment, a mount member 26 is fixedly connected to an end surface on the image side, and the lens barrel 1 is detachably attached to the camera body via the mount member 26.

  In this embodiment, as shown in FIG. 1, the lens group includes a first lens group 22a, a second lens group 22b, a third lens group 22c, and a fourth lens group 22d arranged in order from the objective side to the image side. I have.

  The first lens group 22a includes one or more lenses, and is fixedly held by the first fixed cylinder 21a.

  The second lens group 22b includes one or more lenses, and is held by the first fixed cylinder 21a so as to be movable in the optical axis direction (XW direction, axial direction of the first fixed cylinder 21a). It forms a lens group. The second lens group 22b includes, on the outer peripheral side, a guide groove 212 provided in the first fixed cylinder 21a and a guide shaft 221 movably inserted in a cam groove 231 of the cam cylinder 23 described later. The second lens group 22b moves in the optical axis direction by moving the guide 221 along the guide groove 212 and the cam groove 231. The movement of the second lens group 22b will be further described later.

  The third lens group 22c includes one or more lenses and is fixedly held by the second fixed cylinder 21b.

  The fourth lens group 22d includes one or a plurality of lenses, and the tilt in the optical axis direction and the position in the optical axis direction are provided on the second fixed cylinder 21b by a plurality of adjustment bolts 224 (only one appears in FIG. 1). Is held adjustable.

  The cam cylinder 23 moves the lens group in the optical axis direction, and in this embodiment, moves the second lens group 22b in the optical axis direction. The cam cylinder 23 is formed of a cylindrical body and includes a cam groove 231 into which the guide shaft 221 of the second lens group 22b is movable. The cam groove 231 is formed so as to be inclined in the axial direction in plan view.

  The cam cylinder 23 formed in this way is axially immovable with respect to the first fixed cylinder 21a and around the optical axis (the first fixed cylinder 21a) on the outer peripheral side of a part of the image side of the first fixed cylinder 21a. It is rotatably held around the axis of the cylinder 21a and is rotated by a rotation operation member.

  Specifically, in this embodiment, the rotation operation member includes an autofocus operation member 260, a manual operation member 270, and an output ring 280.

  The autofocus operation member 260 includes an autofocus drive motor 261 held by the first fixed cylinder 21a, and an auto input ring 262 that is connected to the autofocus drive motor 261 via a gear so as to be interlocked. Yes.

  The input ring 262 for auto is comprised from the cylindrical thing. In this embodiment, the auto input ring 262 includes a second gear 262 a that meshes with the first gear 261 a of the output shaft 261 b provided on the autofocus drive motor 261 on the outer periphery. The auto input ring 262 includes a first roller rolling portion 262b on a surface of the image side on which a rolling roller 280b of an output ring 280 described later rolls.

  The auto input ring 262 configured in this manner is disposed on the outer periphery of the first fixed cylinder 21a so as to be rotatable around the axis of the first fixed cylinder 21a.

  The manual operation member 270 manually rotates the cam cylinder 23 and includes a manual input ring 271 and a manual operation ring 272 for operating the manual input ring 271.

  The manual input ring 271 is formed of a ring plate shape, and includes a second roller rolling portion 271a on which a rolling roller 280b of an output ring 280 described later rolls on a surface on the objective side.

  The manual input ring 271 is disposed on the image side of the auto input ring 262 at a predetermined distance from the auto input ring 262 so as to be rotatable about the axis of the first fixed cylinder 21a.

  The manual operation ring 272 is formed of a cylindrical shape, and includes an operation portion 272a including an integrally formed flange on the inner peripheral side. The operation unit 272a operates the manual input ring 271 from the image side via the input ring biasing spring 272c.

  The output ring 280 is constituted by a cylindrical one. The output ring 280 is provided with three interlocking members (only one appears in FIG. 1) held by the output ring 280.

  The interlocking member interlocks the output ring 280 and the auto input ring 262, and interlocks the output ring 280 and the manual input ring 271. Each of the interlocking members includes a roller shaft 280a and a roller shaft. A rolling roller 280b rotatably supported by 280a.

  The output ring 280 is fixedly engaged with the cam cylinder 23 by an engaging member (not shown).

  The output ring 280 configured in this manner is provided between the auto input ring 262 and the manual input ring 271 in the axial direction of the first fixed cylinder 21a and on the outer periphery of the first fixed cylinder 21a. It is rotatably arranged around the axis (around the optical axis).

  In this state, the rolling roller 280b is disposed between the first roller rolling portion 262b of the auto input ring 262 and the second roller rolling portion 271a of the manual input ring 271 and has an input ring. It is clamped between the two by the spring 272c.

  More specifically, an input ring biasing spring 272c made of a corrugated ring spring is provided between the manual operation ring 272 and the manual input ring 271, and this input ring biasing spring 272c allows manual operation. The input ring 271 is biased toward the auto input ring 262 side on the objective side.

  With this urging force, the second roller rolling portion 271a of the manual input ring 271 presses the rolling roller 280b, and the rolling roller 280b presses the first roller rolling portion 262b of the auto input ring 262 by this pressing. doing. Thereby, the rolling roller 280b is clamped by the 1st roller rolling part 262b and the 2nd roller rolling part 271a in the state which applied the fixed urging | biasing force.

  Next, the exterior member 3 will be described. The exterior member 3 is disposed on the outer peripheral side of the lens barrel body 2, and the exterior member 3 of this embodiment is disposed so as to cover the outer periphery of the reinforcing member 24 and is reinforced by bolts (not shown). The member 24 is fixedly connected.

  The exterior member 3 is formed with a rectangular through-hole 30 on the peripheral surface, and the exterior member 3 includes a pedestal holding portion 31 that holds the pedestal 4 on the entire periphery of the through-hole 30. Yes. As shown in FIG. 2, the pedestal holding portion 31 of this embodiment has the pedestal 4 engaged with one end (W direction side in the drawing) of the pedestal holding portion 31 in the circumferential direction (ZW direction in the drawing). A first locking portion 32 that stops is provided, and a pedestal fixing portion 33 that fixes the pedestal is provided at the end of the pedestal holding portion 31 on the other circumferential side (the Z direction side in the drawing). In this embodiment, the base fixing portion 33 is formed of a screw hole that is screwed with the base fixing bolt 34.

  The pedestal 4 includes a pedestal main body 40 having an arc shape in a side view as viewed from the optical axis direction, a second locking portion 41 formed at one end in the circumferential direction of the pedestal main body 40, and the other end in the circumferential direction. And a switch member disposition portion 43 to 45 formed between the first locking portion 41 and the fixed portion 42 in the circumferential direction of the pedestal main body 40.

  The pedestal main body 40 is formed in a shape such that the center of curvature is substantially the same as the center of curvature of the outer peripheral surface of the exterior member 3. Thereby, when the pedestal main body 40 is attached to the outer periphery of the exterior member 3, the outer periphery of the pedestal main body 40 is formed so as to follow the outer peripheral shape of the exterior member 3.

  The second locking portion 41 is detachably locked with the first locking portion 32 of the exterior member 3. In this embodiment, the second locking portion 41 includes locking claws protruding from one circumferential end surface of the base body 40. It is configured.

  The fixed portion 42 includes a bolt insertion hole through which the base fixing bolt 34 is inserted.

  In this embodiment, as shown in FIGS. 2 to 5, the switch member disposing portion includes a first switch member disposing portion 43 formed in order from the second locking portion 41 (W direction side in the drawing), The switch member disposing portion 44 and the third switch member disposing portion 45 are provided.

  The first switch member disposing portion 43 includes a switch member holding portion 431 that holds a first switch member 5a, which will be described later, movably, a first switch engagement positioning portion 433 that positions the first switch member 5a, A first switch guide rail 432 that guides the switch member 5 a and a first switch member detection unit 434 that detects the position of the first switch member 5 a in the first switch member disposition unit 43 are provided.

  The first switch member holding portion 431 has a long hole-like shaft fit through which a receiving portion 431a for movably receiving the first switch member 5a and a shaft portion 512 of an operation member 51a of the switch member 5a described later are movably inserted. And an insertion hole 431b.

  The receiving portion 431a is recessed on the outer peripheral surface of the pedestal main body 40 with a predetermined width in the circumferential direction of the pedestal main body 40 and a predetermined length in the optical axis direction, with a predetermined depth from the outer peripheral surface of the pedestal main body 40. Is formed.

  The shaft fitting insertion hole 431 b is formed so as to penetrate from the receiving portion 431 a to the inner peripheral surface of the pedestal main body 40.

  The first switch engagement positioning portion 433 is formed on the other side (Z direction side) of the shaft fitting insertion hole 531 b in the circumferential direction of the pedestal main body 40. The engagement positioning portion 433 of this embodiment includes two partition walls 433a and three first engagement portions 433d partitioned by the partition wall 433a.

  Each partition wall 433a includes a top portion 433b protruding inward from the inner peripheral surface of the pedestal main body 40, and inclined surfaces 433c formed on both sides of the top portion 433b from the top portion 433b to the first engagement portion 433c.

  The first switch guide rails 432 are formed on both sides of the engagement positioning portion 433 in the optical axis direction. Each guide rail 432 includes a first switch guide surface 432a on which a guide portion of a switch member described later slides.

  In this embodiment, the guide surface is formed so as to substantially follow the arc-shaped normal line of the pedestal main body 40.

  The first switch member detection unit 434 is formed on one side (W direction side) of the shaft fitting insertion hole 531 b in the circumferential direction of the pedestal main body 40. The first switch member detection unit 434 includes a detection unit main body 434a attached to the pedestal main body 40, and a detection piece 434b movably held by the detection unit main body 434a.

  The detection unit main body 434a can detect the position of the detection piece 434b with respect to the detection unit main body 434a. And this detection part main body 434a is connected to the board | substrate 27 by the flexible printed wiring board 440. FIG.

  Similarly to the first switch member disposing portion 43, the second switch member disposing portion 44 includes a second switch member retaining portion 441 that retains the second switch member 5b, and a second switch that positions the second switch member 5b. An engagement positioning portion 443, a second switch guide rail 442 for guiding the second switch member 5b, and a second switch member detecting portion 444 for detecting the position of the second switch member 5b in the second switch member disposing portion 44. It has.

  The second switch member holding portion 441 includes a receiving portion 441a and a shaft fitting insertion hole 441b. However, the second switch member holding portion 441 is formed to be shorter in the optical axis direction than the first switch member holding portion 431.

  The second switch engagement positioning part 443, the second switch guide rail 442, and the second switch member detection part 444 also have substantially the same configuration as that of the first switch member disposition part 43.

  Specifically, the second switch engagement positioning portion 443 includes a partition wall 443a and a first engagement portion 443d. However, in the second switch engagement positioning portion 443, two first engagement portions 443d are formed by one partition wall 443a.

  The second switch guide rails 442 are formed on both sides of the engagement positioning portion 433 in the optical axis direction, and each second switch guide rail 442 is formed so as to substantially follow the arcuate normal of the base body 40. The guide surface 442a is provided.

  The second switch member detection unit 444 includes a detection unit main body 444a and a detection piece 444b.

  However, the second switch engagement positioning portion 443 and the second switch guide rail 442 are formed on the other side (W direction side) of the shaft fitting insertion hole 431b in the circumferential direction (ZW direction) of the pedestal main body 40. The two switch member detection unit 444 is formed on the other side (Z direction side) of the shaft fitting insertion hole 531b in the circumferential direction of the base body 40.

  Accordingly, the second switch engagement positioning portion 443, the second switch guide rail 442, and the second switch member detection portion 444 are positioned with respect to the shaft fitting insertion hole 541b at the first switch engagement positioning portion 433 and the first switch guide rail 432. The second switch member detection unit 434 is disposed on the opposite side to the position with respect to each shaft fitting insertion hole 531b.

  The third switch member disposing portion 45 also has substantially the same configuration as the first switch member disposing portion 43. Specifically, the third switch member disposing portion 45 includes a switch member holding portion 451, a third switch engagement positioning portion 453, a third switch guide rail 452, and a third switch member detecting portion 454. .

  The third switch member holding portion 451 includes a receiving portion 451a and a shaft fitting insertion hole 451b.

  The first switch engagement positioning portion 453 includes two partition walls 453a and three first engagement portions 453d partitioned by the two partition walls 453a.

  The third switch guide rail 452 is formed so as to substantially follow the arcuate normal of the pedestal main body 40 and includes a third switch guide surface 452a.

  The third switch member detection unit 454 includes a detection unit main body 454a and a detection piece 454b.

  Therefore, the positions of the third switch engagement positioning portion 453, the third switch guide rail 452, and the third switch member detection portion 454 with respect to the shaft fitting insertion hole 551b are the first switch engagement positioning portion 433 and the first switch guide rail 432. The second switch member detection unit 434 is disposed on the same side as the position of each shaft fitting insertion hole 531b.

  In this embodiment, the pedestal 4 configured as described above is molded as follows using a molding die.

  As shown in FIGS. 7 and 8, the mold includes one inner surface mold 401 for molding the inner surface of the base 4 and three outer surface molds 402, 403, and 404 for molding the outer surface of the base 4. .

  The inner surface mold 401 has, on the outer surface, a first switch guide surface molding portion 411 for molding the first switch guide surface 432a, a second switch guide surface molding portion 412 for molding the second switch guide surface 442a, and A pedestal inner surface molding portion 401a having a third switch guide surface molding portion 413 for molding the third switch guide surface 452a is provided.

  The first switch guide surface molding portion 411 has an angle α1 with respect to the mold release direction (P direction in the figure) of the inner surface mold 401 after the base 4 is molded, and the first switch guide surface 432a has a draft angle α1. It can be formed into a surface having

  The second switch guide surface molding portion 412 is formed on a surface (surface with a draft angle of 0) along the die-cutting direction of the inner surface molding die 401, and the second switch guide surface 442 a has a draft angle of “0”. It can be molded to the surface.

  The third switch guide surface molding part 413 has an angle α2 with respect to the die-cutting direction of the inner surface molding die 401, and the third switch guide surface 452a can be molded into a surface having a draft angle α2.

  Therefore, in this embodiment, the first switch guide surface molding part 411, the second switch guide surface molding part 412 and the third switch guide surface molding part 413 of the inner surface molding die 401 are connected to the first switch guide surface 432a and the second switch guide surface 432a. The switch guide surface 442a and the third switch guide surface 452a are formed to have three different draft angles.

  The outer surface molds 402, 403, and 404 are provided with outer surface molding portions 402a, 403a, and 404a on the outer surface for forming a part of the outer surface of the pedestal 4 and the shaft fitting insertion holes 431b, 441b, and 451b, respectively.

  It is preferable that the die-cutting direction of the inner surface mold 401 is substantially the same as the center line in the base arc direction. According to this, even if the pedestal 4 is enlarged by providing a large number of switch members, it is easy to form the inner surface shape. The first switch guide surface molding portion 411 and the outer surface forming die 402 are cut out from the die, the second switch guide surface forming portion 412 and the outer surface forming die 203 are cut out from the die, the third switch guide surface forming portion 413 and the outer surface forming die. The extraction direction of 404 is set to be parallel. Thereby, the axial direction of the shaft part 512 of the switch member and the guide part are parallel, and the operation feeling of the plurality of switch members can be made uniform.

  The first switch guide surface 432a and the third switch guide surface 452a corresponding to the operation members 51a (W side) and 51c (Z side) provided at the circumferential end of the pedestal main body 40 are respectively on the pedestal end portion side. It is provided so as to face (W side, Z side).

  As shown in FIG. 7, the inner surface mold 401 and the outer surface molds 402, 403, and 404 configured as described above are combined so that the pedestal inner surface molded portion 401a and the outer surface molded portions 402a, 403a, and 404a face each other. Thus, a pedestal molding portion 405 is formed between the pedestal inner surface molding portion 401a and the outer surface molding portions 402a, 403a, 404a.

  In this state, for example, a molten synthetic resin material is filled in the base molding portion 405 and cooled. Thereby, the base 4 is formed in the base forming part 405.

  Thereafter, the inner surface mold 401 and the outer surface molds 402, 403, and 404 are punched (released) from the base 4 that is molded as shown in FIG.

  At that time, the first switch guide surface 432a is formed on a surface having a draft angle α1 with respect to the mold drawing direction of the inner surface mold 401, and the second switch guide surface 442a is a surface along the mold cutting direction of the inner surface mold 401. The third switch guide surface 452a is formed on a surface having a draft angle α2 with respect to the die-cutting direction of the inner surface mold 401. As a result, the first switch guide surface 432a, the second switch guide surface 442a, and the third switch guide surface 452a are formed by a single inner surface molding die 401 on a smooth surface without any lacking or cracking. Is done. Therefore, the pedestal 4 is manufactured at low cost.

  Next, the switch member will be described. The switch member is held by the first switch member 5a held by the first switch member holding portion 431, the second switch member 5b held by the second switch member holding portion 441, and the third switch member holding portion 451. The third switch member 5c is provided.

  The first switch member 5a includes an operation member 51a and a connection member 52 connected to the operation member 51a.

  The operation member 51a includes a plate-like pressing operation portion 511 to be pressed and a quadrangular columnar shaft portion 512. The pressing operation unit 511 is disposed on the receiving unit 431a of the first switch member holding unit 431 so as to be movable in the optical axis direction. The pressing operation unit 511 includes a plurality of anti-slip portions 511a that extend in the direction orthogonal to the optical axis direction on the outer surface.

  The shaft portion 512 is formed so as to protrude from the inner surface of the pressing operation portion 511. The contact portion 512a with which the connecting member 52 abuts on the protruding front end surface and the connecting member 52 are fixedly connected. A connected portion 512b is provided.

  The contact portion 512 a is formed on an orthogonal surface orthogonal to the axial direction of the shaft portion 512. In addition, in this embodiment, the connected portion 512b includes a screw hole into which the connecting bolt 53 is screwed.

  As shown in FIG. 6, the connecting member 52 includes a rectangular plate-like connecting member main body 521, a first engaging portion 522 formed at one end in the width direction of the connecting member main body 521, and the other of the connecting member main body 521. A second engagement portion 523 formed at an end portion, and a plurality of slide portions 524a and 524b formed on both sides of the second engagement portion 523 across the second engagement portion 523 and sliding on the first guide rail, It has.

  The connection member main body 521 includes a contacted portion 521b that is in contact with the contact portion 512a on one surface in the thickness direction. The connecting member main body 521 includes a connecting bolt insertion hole 521a formed so as to penetrate from the one surface in the thickness direction to the other surface. In addition, the connecting member main body 521 is provided with a first bent piece 521e and a second bent piece 521f that are bent through the stepped portion 521d at the other end, and elasticity that extends from the first bent piece 521e. The arm part 521g which has.

  The first engagement portion 522 is engaged with the detection piece 434b of the first switch member detection portion 434. In this embodiment, the first engagement portion 522 is inserted into the detection piece for inserting the detection piece 434b. Part 522a, and the detection piece 434b is inserted into the detection piece insertion part 522a, whereby the first engagement part 522 and the detection piece 434b of the first switch member detection part 434 are engaged. Yes. The second engaging portion 523 is formed at the tip of the arm portion 521g of the connecting member main body 521.

  Any one of the slide portions 524a and 524b is selectively used according to each of the switch guide rails 432, 442, and 452. In this embodiment, the slide portion includes the first slide portion 524a and the second slide portion 524a. It consists of two parts, the slide part 524b. The 1st slide part 524a is formed in the front end surface of the 1st bending piece 521e, and the front end surface of the 2nd bending piece 521f. These first slide portions 524a are formed on a surface orthogonal to the contacted portion 521b.

  The 2nd slide part 524b is formed in the step part of the bending base end part of the 1st bending piece 521e, and the step part of the bending base end part of the 2nd bending piece 521f. These second slide portions 524b are also formed in parallel to the surface orthogonal to the contacted portion 521b, that is, the first slide portion 524a.

  The first switch member 5a configured as described above is held by the first switch member holding portion 431 as follows, for example.

  That is, the shaft portion 512 of the operation member 51 a is inserted into the shaft insertion hole 431 b from the outer peripheral side of the base 4. On the other hand, a connecting member 52 is disposed on the inner peripheral side of the base 4 and is connected to the shaft portion 512. Specifically, in the connection member 52, the first engagement portion 522 and the detection piece 434b are engaged with each other so that the first engagement portion 522 faces one side (W direction side) of the base 4 in the circumferential direction. The first slide portion 524a of the connection member 52 contacts the first switch guide surface 432a of the first switch guide rail 432, and the contacted portion 521b of the connection member 52 contacts the contact portion 512a of the operation member 51a. Put into a state. Therefore, in this embodiment, the first slide portion 524a of the first switch member 5a is adapted to the position and shape of the first switch guide surface 432a of the first switch guide rail 432, and the first slide portion 524a and the second slide portion 524a Among the slide parts 524b, the first slide part 524a is selected and used.

  In this state, the connecting bolt 53 is passed through the connecting bolt insertion hole 521a of the connecting member 52 and is screwed to the connected portion 512b of the shaft portion 512 of the operation member 51a. Thereby, the operation member 51 a and the connecting member 52 are connected, and the first switch member 5 a is slidably held by the first switch member holding portion 431 of the base 4.

  In this embodiment, the second switch member 5b switches the setting of the autofocus drive range, and similarly to the first switch member 5a, the operation member 51b and the connection member connected to the operation member 51b. 52.

  The operation member 51b of the second switch member 5b is smaller than the operation member 51a of the first switch member 5a and is formed in a size that can be received by the receiving portion 441a of the second switch member holding portion 441. Other than that of the operation member 51b, the same structure as the operation member 51a of the 1st switch member 5a is taken.

  The connecting member 52 of the second switch member 5b has the same configuration as that of the first switch member 5a.

  The second switch member 5b configured as described above is held by the second switch member holding portion 441 in the same manner as the first switch member 5a described above.

  However, the connecting member 52 in the second switch member 5b is disposed in the opposite direction to the connecting member 52 in the first switch member 5a. That is, the connecting member 52 is arranged such that the first engaging portion 522 faces the other side (Z direction side) of the base 4 in the circumferential direction, and the second slide portion 524b of the connecting member 52 in the second switch member 5b. Is in contact with the guide surface 442a of the second switch guide rail 442. Therefore, the second slide portion 524b of the connecting member 52 in the second switch member 5b is adapted to the second switch guide surface 442a of the second switch guide rail 442, and the first slide portion 524a and the second slide portion 524b are in contact with each other. The second slide portion 524b is selected and used.

  In this embodiment, the third switch member 5c is an autofocus preset (driven to a predetermined focus position) setting switch. Like the first switch member 5a, the operation member 51c, the operation member 51c, And a connected connecting member 52.

  The operation member 51c and the connection member 52 have the same configuration as the operation member 51a and the connection member 52 of the first switch member 5a.

  The third switch member 5c configured as described above is also held by the third switch member holding portion 451 in the same manner as the first switch member 5a described above.

  In addition, the second slide portion 524b of the connecting member 52 in the third switch member 5c is selectively used to contact the guide surface 452a of the third switch guide rail 452.

  The lens barrel 1 configured as described above, for example, slides the first switch member 5a to the position of the autofocus mode (in this embodiment, one of the two autofocus modes). During the sliding, the first slide portion 524a of the connecting member 52 slides in a state of surface contact with the first switch guide surface 432a of the first switch guide rail 432, so the first slide portion 524a is in contact with the first switch guide surface. Smoothly slides 432a and feels good. Further, there is little risk of scratching the first switch guide surface 432a, and the durability between the guide surface and the slide portion can be improved.

  When the first switch member 5a is pressed into the autofocus mode, the detection piece 434b of the first switch member detection unit 434 moves together with the first switch member 5a. Then, the detection unit main body 434a detects the position of the detection piece 434b with respect to the detection unit main body 434a and transmits the detected position information to the substrate 27.

  As a result, a voltage is applied from the substrate 27 to the autofocus drive motor 261, and the autofocus drive motor 261 operates accordingly.

  As the autofocus drive motor 261 operates, the auto input ring 262 that meshes with the first gear 261a rotates. Further, along with this rotation, the rolling roller 280b rolls on the first roller rolling portion 262b. At that time, the rolling roller 280b is sandwiched between the first roller rolling portion 262b and the second roller rolling portion 271a of the manual input ring 271, and the manual input ring 271 is connected to the input ring biasing spring 272c. Since the rotation is restricted by the urging force or the like, the rolling roller 280b revolves around the first fixed cylinder 21a while rotating, whereby the output ring 280 holding the rolling roller 280b rotates. .

  As the output ring 280 rotates, the cam cylinder 23 rotates. Further, as the cam cylinder 23 rotates, the guide shaft 221 that has entered the guide groove 212 of the first fixed cylinder 21a and the cam groove 231 of the cam cylinder 23 moves through the grooves 212 and 31, respectively. The lens group 22b moves in the optical axis direction of the first fixed cylinder 21a.

  On the other hand, when the manual operation is performed, the first switch member 5a is pressed from the autofocus mode position to the manual mode position, and from this state, the manual operation ring 272 is manually rotated. As a result, the manual input ring 271 rotates and the rolling roller 280b rolls on the second roller rolling portion 271a. At that time, since the auto input ring 262 sandwiching the rolling roller 280b cannot rotate by meshing with the autofocus drive motor 261, the rolling roller 280b revolves around the first fixed cylinder 21a while rotating. Then, the entire output ring 280 rotates. Thereafter, as described above, the cam cylinder 23 rotates to drive the second lens group 22b in the optical axis direction of the first fixed cylinder 21a.

  Since the lens barrel 1 is configured as described above, the connecting member includes a plurality of slide portions, and any one of the slide portions is selectively used according to the position of the guide rail. The degree of freedom of arrangement of the plurality of sliding members in is increased. Thereby, for example, the degree of freedom of the arrangement of the guide rails on the base and the arrangement of the switch member detection unit is increased, and the flexible printed wiring board connected to the switch member detection unit is easily wired. On the other hand, the connecting member having the same shape may be formed, and the manufacturing cost can be reduced.

  In addition, since the first engaging portion is formed at one end of the connecting member and the slide portion and the second engaging portion are formed at the other end of the connecting member, it is easy to form the connecting member. Moreover, the engagement positioning part and the detection part in the base can be formed at a predetermined interval, and the formation of the engagement positioning part and the detection part becomes easy.

  Moreover, since each slide part is arrange | positioned on both sides of the 2nd engagement part on both sides of the 2nd engagement part, when each slide part slides a guide rail, a sliding member inclines with respect to a guide rail. There is little fear and each slide part can slide on a guide rail stably. Further, the length in the width direction from one end to the other end of the connecting member can be suppressed, and the connecting member can be downsized.

  Further, since the connecting member includes an arm portion that urges the second engagement portion toward the engagement positioning portion, it gives the user a click feeling that the second engagement portion has entered the engagement positioning portion. In addition, it is possible to maintain the state in which the second engagement portion has entered the engagement positioning portion. Further, when the second engagement portion that has entered the engagement positioning portion is applied with a force greater than the urging force, the position of the second engagement portion is changed from the engagement positioning portion.

  Further, if the connecting member main body and the elastic arm portion are integrally formed, an urging member such as a spring can be eliminated, and the connecting member can be easily formed at low cost.

  In addition, the axial direction of the shaft portion 512 of each switch member 5 a, 5 b, 5 c is formed along the normal direction of the arc shape of the base body 40. Thereby, the relationship (convex amount) with the pedestal main body 40 becomes equal in each of the plurality of switch members 5a, 5b, and 5c, and the operability becomes uniform.

  Further, the axial direction of the shaft portion 512 of each switch member 5a, 5b, 5c is formed in parallel with each guide surface 432a, 442a, 452a, and the slide portions 524a, 524b make the guide surfaces 432a, 442a, 452a smoother. Slide to. Thereby, the feeling of sliding can be further improved.

  Moreover, when the to-be-connected part 512b and the guide surfaces 432a, 442a, 452a are orthogonal, and the connecting member 52 is plate-shaped, the surface contact is easier and the sliding feeling becomes better.

  Further, the distances from the center positions of the operation members 51a, 51b, 51c (for example, the axial center of 53) to the guide surfaces 432a, 442a, 452a, the first engagement portion 522, and the second engagement portion 523 are substantially equal. In addition, since the positional relationship between the center position and the respective parts is the same, it is easy to make the operation feel of the plurality of operation members 51a, 51b, 51c uniform.

  In the above-described embodiment, the sliding member is composed of the switch members 5a, 5b, and 5c. However, the sliding member is not limited to this configuration, but can be applied to various types and can be appropriately changed.

  Moreover, in the said embodiment, although the sliding member was comprised from three switch member 5a, 5b, 5c, the sliding member should just be two or more, and can be suitably changed suitably.

DESCRIPTION OF SYMBOLS 1 Lens barrel 2 Lens barrel main body 3 Exterior member 4 Base 5a 1st switch member (sliding member)
5b Second switch member (sliding member)
5c Third switch member (sliding member)
51a, 51b, 51c Operation member 52 Connecting member 432 First switch guide rail (guide rail)
433 1st switch engagement positioning part (engagement positioning part)
442 Second switch guide rail (guide rail)
443 Second switch engagement positioning portion (engagement positioning portion)
452 Third switch guide rail (guide rail)
453 Third switch engagement positioning part (engagement positioning part)
522 1st engaging part 523 2nd engaging part 524a 1st slide part 524b 2nd slide part

Claims (9)

A cylindrical exterior member, a pedestal held by the exterior member, and a plurality of sliding members slidably held by the pedestal,
The pedestal includes a number of guide rails corresponding to the sliding member,
Each of the sliding members includes an operation member that is slidably operated from the outer peripheral side of the pedestal, and a connection member that is connected to the operation member.
The connecting member includes a slide portion that slides on each guide rail,
The lens barrel according to claim 1, wherein the slide unit includes a plurality of slide parts so that any one of them can be selectively used according to the guide rails. A cylindrical exterior member, a pedestal held by the exterior member, and a plurality of sliding members slidably held by the pedestal,
The pedestal includes a pedestal main body having an outer peripheral surface and an inner peripheral surface formed on an arc surface, and a number of guide rails corresponding to the sliding member on the inner peripheral surface of the pedestal main body,
Each sliding member includes an operation member that is slidably operated from the outer peripheral side of the pedestal, and a connecting member that is disposed on the inner peripheral surface side of the pedestal and is connected to the operating member.
The connecting member includes a slide portion that slides on each guide rail,
The slide portion is formed to correspond to the shape of each guide rail,
The base body and the guide rail are formed by integral molding with a molding die,
Each of the guide rails includes a guide surface on which the slide portion slides,
The lens barrel according to claim 1, wherein the guide surface is a surface along a mold drawing direction of the mold during molding or a surface having a draft with respect to the mold drawing direction.   The lens barrel according to claim 2, wherein the guide surface includes at least two different draft angles. The pedestal body includes an operation member moving hole formed so as to penetrate from the outer peripheral surface to the inner peripheral surface,
The operating member includes a shaft portion that is movably inserted into the operating member moving hole,
The slide portion is a surface substantially parallel to the axial direction of the shaft portion,
The lens barrel according to claim 2, wherein the guide surface is formed to be substantially parallel to an axial direction of the shaft portion. The pedestal includes an engagement positioning unit that engages and positions the sliding member with respect to the pedestal, and a detection unit that detects a position of the sliding member with respect to the pedestal,
The connection member includes a first engagement portion formed at one end of the connection member and engaged with the detection portion, and formed at the other end of the connection member and detachably engaged with the engagement positioning portion. A second engaging portion to be joined,
The lens barrel according to claim 1, wherein the slide portion is formed at the other end portion of the connecting member. The guide rails are arranged on both sides of the engagement positioning portion with the engagement positioning portion interposed therebetween,
The lens barrel according to claim 5, wherein the slide part is disposed on both sides of the second engagement part with the second engagement part interposed therebetween.   The lens barrel according to claim 5 or 6, wherein the connecting member includes a biasing portion that biases the second engagement portion toward the engagement positioning portion. The connecting member includes a plate-like connecting member main body and an elastic arm portion connected to the connecting member main body,
The second engagement portion is formed at the tip of the arm portion,
The lens barrel according to claim 7, wherein the biasing portion is the arm portion. The connecting member includes a plate-like connecting member main body, and a bent piece that is bent from the connecting member main body via a stepped portion,
The slide portion includes a first slide portion formed at a distal end portion of the bent piece and a second slide portion formed at a step portion of a bent base end portion of the bent piece. The lens barrel according to any one of claims 1 to 8.

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