JP6409266B2 - Switch unit and imaging device - Google Patents

Description

  The present invention relates to a switch unit and an imaging apparatus.

A camera switch mechanism to which a cable release can be attached is known.
[Prior art documents]
[Patent Literature]
[Patent Document 1] Japanese Utility Model Publication No. 59-116933

  When attaching the cable release to the release button, the release button rotates, so the installation of the cable release is troublesome.

  The switch unit according to the first aspect of the present invention is in a first conduction state due to a contact member that is displaced by receiving a pressing force caused by a user's contact and a displacement of the first stroke of the contact member, and the second stroke of the contact member. An electrical section that is in a second conduction state due to displacement, a rotation member that rotates around the axis of the contact member, a rotation restricting member that restricts the contact member from rotating about the axis, and a rotation angle of the rotation member The rotation restricting member is restricted, and the rotation restricting member and the rotation restricting member are arranged at least partially on the same diameter when viewed from the axial direction of the contact member.

  An imaging device according to a second aspect of the present invention includes the switch unit described above as a release switch.

  The summary of the invention does not enumerate all the features of the present invention. In addition, a sub-combination of these feature groups can also be an invention.

It is a top view of a camera provided with the switch unit concerning this embodiment. It is a disassembled perspective view of the switch unit which concerns on this embodiment. It is the elements on larger scale which showed typically the section support part of a switch unit. It is AA sectional drawing of the switch unit in FIG. It is an external appearance perspective view of a release button and a sleeve. It is a figure explaining rotation restrictions of a sleeve of a switch unit concerning this embodiment, and rotation restrictions of a power dial. It is a figure which shows a mode that a release button is pressed with a user's finger | toe, and a mode that a sleeve is pressed with a cable release.

  Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the invention according to the claims. In addition, not all the combinations of features described in the embodiments are essential for the solving means of the invention.

  FIG. 1 is a top view of a camera 10 including a switch unit according to the present embodiment. The camera 10 is configured by attaching a detachable lens unit 14 to a camera unit 12 as an imaging device. The camera unit 12 includes a switch unit 20. The switch unit 20 includes a release button 50 and a power dial 60.

  As shown in the figure, the switch unit 20 is disposed on the upper surface of the camera 10. In the following description, in the camera 10, the front side of the paper surface where the release button 50 appears in the appearance is defined as the upper surface side or the upper side, and the opposite side to the drawing is defined as the bottom surface side or the lower side. Further, the upper side of the paper surface on which the lens is mounted is the front side, and the lower side of the paper surface is the rear side. That is, the direction in which the lens unit 14 is attached and detached is the front-rear direction. Further, the side on which the switch unit 20 is disposed with respect to the center of the paper surface is the right side, and the opposite side is the left side. The front-rear direction and the left-right direction may be collectively referred to as a plane direction.

  The release button 50 as a contact member is contacted by the user and transmits a pressing force by the user to an electrical section described later. The release button 50 is a two-stage push-in switch. Here, the first-stage displacement of the release button 50 is defined as the first stroke, and the second-stage displacement is defined as the second stroke. The electrical piece takes the first conduction state and the second conduction state in response to the displacement of the first stroke and the second stroke of the release button 50.

  When the user directly displaces the release button 50 by the first stroke, the electrical piece becomes the first conduction state. In the first conduction state, for example, AE and AF photographing preparation operations are executed. When the user displaces the release button 50 by the second stroke, the electrical piece becomes the second conduction state. In the second conduction state, a photographing operation for generating image data by photoelectrically converting the subject image is executed.

  The insertion hole 52 is provided at the center of the release button 50. A cable release having a pressing shaft member that advances and retreats in the tube is mounted in the insertion hole 52. By operating the cable release, the user can set the electrical piece to the first conduction state or the second conduction state even if the user is away from the camera 10. As will be described in detail later, when the user displaces the pressing shaft by the first stroke, the pressing shaft presses the electrical piece. And an electrical piece will be in the 1st conduction state. When the user displaces the pressing shaft by the second stroke, the pressing shaft presses the electrical piece. And an electrical section will be in the 2nd conduction state.

  Therefore, the user can set the electrical piece to the first conduction state or the second conduction state by directly operating the cable release without touching the release button 50. As described above, the switch unit 20 according to the present embodiment is configured so that the electrical section is the first in any case of receiving either a direct operation by a user's contact or an indirect operation via a cable release. The conductive state or the second conductive state can be set.

  A power dial 60 as a rotating member is disposed on the outer periphery of the release button 50. The power dial 60 rotates around the axis of the release button 50. The power dial 60 has a rotation angle limited by a rotation limiting member to be described later so that the power dial 60 can rotate, for example, 45 degrees. In the power dial 60, power on and power off are assigned to both positions of the rotation angle. The user can switch the power of the camera unit 12 to the on or off state by operating the power dial 60 to any position.

  FIG. 2 is an exploded perspective view of the switch unit 20 according to the present embodiment. In particular, FIG. 2A is a bird's-eye view, and FIG. 2B is a top view. As shown in the figure, the switch unit 20 includes a release button 50, a power dial 60, a drip-proof rubber 80, a bearing member 90, a sponge 100, an E ring 110, a power dial collar 120, a brush support member 130, a contact brush 140, a click plate. 150 and screws 160. Further, the switch unit 20 includes a sleeve 170, a spring 180, a ground plane 190, an E-ring 200, a steel ball 210, a spring 220, an electrical piece 230 and a screw 240.

  The release button 50 includes a contact surface 51, an insertion hole 52, a shaft 53, a groove 54, and a flat surface 55. The shaft 53 is provided on the surface opposite to the contact surface 51 that is in contact with the user of the release button 50 along the pressing direction. The shaft 53 is a hollow shaft, and the hollow portion is connected to the insertion hole 52. The groove 54 is formed in the circumferential direction on the outer periphery of the shaft 53. The two flat surfaces 55 facing each other are formed on the outer peripheral surface on the tip side of the groove 54.

  The power dial 60 includes a recess 61 and a through hole 62. The power dial 60 is formed in a cylindrical shape. In order to improve the operability for the user, the outer peripheral surface of the power dial 60 is knurled. A cylindrical recess 61 is provided on the upper surface of the power dial 60. The through hole 62 is a hole formed on the bottom of the recess 61 coaxially with the recess 61. The release button 50 is inserted into the recess 61 from above.

  The bearing member 90 includes a body portion 91 and a flange portion 92. The bearing member 90 plays a role of supporting the release button 50. The trunk | drum 91 is formed in a cylindrical shape. The collar portion 92 is formed at the lower end of the trunk portion 91 so as to expand the outer diameter of the trunk portion 91. The body portion 91 is inserted into the through hole 62 from below. Then, the shaft 53 is inserted into the trunk portion 91 from above with the bearing member 90 fitted to the power dial 60.

  The drip-proof rubber 80 as a sealing member is formed in a cylindrical shape. The drip-proof rubber 80 is fitted on the outer periphery of the shaft 53 and is disposed between the release button 50 and the power dial 60.

  The sponge 100 as an elastic member is formed in an annular shape. The sponge 100 is inserted on the outer periphery of the shaft 53. The E ring 110 as a ring member is fitted in the groove 54 and fastened to the outer periphery of the shaft 53. That is, the sponge 100 is interposed between the bearing member 90 and the E ring 110. The E-ring 110 can prevent the sleeve 170 from being detached from the main plate 190. The E-ring 110 is an example of an extension part that extends in the outer circumferential direction of the shaft 53.

  The power dial 60 is attached to the power dial collar 120 after the release button 50 secured by the E-ring 110 is attached. As will be described in detail later, the power dial collar 120 is fixed to an exterior member 40 as a casing.

  The exterior member 40 is a cover member that configures the appearance of the camera unit 12. The exterior member 40 has an insertion hole 41 formed on the upper surface.

  The power dial collar 120 is inserted into the insertion hole 41 from below. The power dial collar 120 serves as a radial positioning member when the power dial 60 is attached. The power dial collar 120 includes a body portion 121 and a flange portion 122. The body part 121 is formed in a cylindrical shape. The flange 122 is formed at the lower end of the body 121 so as to expand the outer diameter of the body 121. The flange 122 is fixed to the lower surface of the exterior member 40, that is, the back surface, using an adhesive, for example. The body 121 protrudes upward from the insertion hole 41.

  As shown in FIG. 2B, the power dial collar 120 further includes a protrusion 123 that protrudes downward from the inner periphery of the body 121. The protrusion 123 is composed of two protrusions formed at predetermined intervals in the circumferential direction. As will be described in detail later, the protrusion 123 serves as a rotation limiting member that limits the rotation of the power dial 60. Further, the protrusion 123 also serves as a rotation restricting member that restricts the rotation of the sleeve 170 around the axis.

  The power dial 60 is fitted to the outer peripheral surface of the body 121. The brush support member 130 is attached to the lower surface of the bearing member 90.

  The brush support member 130 includes a base part 131, an attachment part 132, a brush fixing part 133, and a notch part 134. The base 131 is formed in an annular shape. The attachment portion 132 is formed in a convex shape on the upper surface of the base portion 131.

  As shown in FIG. 2B, the brush fixing portion 133 is formed in a convex shape on the lower surface of the brush support member 130. The contact brush 140 is fixed to the lower end surface of the brush fixing portion 133.

  The contact brush 140 is a leaf spring formed of metal, for example. One end of the contact brush 140 is fixed to the brush fixing portion 133 by welding, for example. The other end of the contact brush 140 is in contact with a circuit pattern provided on the upper surface of the main plate 190.

  The click plate 150 plays a role of giving a click feeling to the user together with the steel ball 210 and the spring 220. The click plate 150 is formed of, for example, a metal plate. The click plate 150 is formed in a C shape along the outer shape of the base portion 131. A plurality of click holes 151 are formed in the click plate 150. The click hole 151 is formed in accordance with the rotational position of the power dial 60. In the present embodiment, since the power dial 60 has two positions of power on and power off, the click holes 151 are provided at two positions.

  The brush support member 130 is fixed to the power supply dial 60 via the bearing member 90 on the upper surface by screws 160 with the click plate 150 in contact with the lower surface. Therefore, the brush support member 130 is integrated with the power dial 60 and can rotate around the axis together with the power dial 60. Therefore, the contact brush 140 can slide on the circuit pattern corresponding to the rotation of the power dial 60.

  The sleeve 170 as a pressing member plays a role of pressing the electrical piece 230. The sleeve 170 includes a body 171, a first shaft 172, a second shaft 173, and a protrusion 175. The trunk 171 is formed in a columnar shape. The first shaft 172 is formed to extend upward from the upper surface of the body portion 171. The second shaft 173 is formed to extend downward from the lower surface of the body portion 171. As will be described in detail later, a groove portion 174 surrounding the first shaft 172 is formed on the upper surface of the body portion 171. The protruding portion 175 as the restricting portion is formed to protrude in the radial direction from the body portion 171. The groove 176 is formed on the outer periphery of the second shaft 173 in the circumferential direction.

  The spring 180 as the biasing member is, for example, a compression coil spring. The spring 180 is interposed between the sleeve 170 and the main plate 190 in a state of being arranged on the outer periphery of the second shaft 173. The spring 180 biases the sleeve 170 away from the main plate 190, that is, upward.

  The ground plane 190 includes an insertion hole 191, a spring accommodating portion 192, a section fixing portion 196, and a section support portion 193. The second shaft 173 is inserted through the insertion hole 191. The E-ring 200 is fitted into the groove 176 and fastened to the outer periphery of the second shaft 173. The E-ring 200 can prevent the sleeve 170 from being detached from the main plate 190.

  As shown in FIG. 2B, the main plate 190 further includes a section fixing portion 196 and a section support portion 193 on the lower surface. The electrical piece 230 is fixed to the piece fixing part 196 with a screw 240. As will be described in detail later, the section support portion 193 is formed to protrude downward from the main plate 190. The section support portion 193 supports the electrical section 230 in a state where the electrical section 230 is fixed, that is, the end opposite to the fixed end of the electrical section 230, that is, the free end is biased upward.

  The ground plane 190 further includes a spring accommodating portion 192. The spring accommodating portion 192 is formed so as to protrude in a cylindrical shape from the upper surface of the main plate 190. The spring 220 is, for example, a compression coil spring. The spring 220 biases the steel ball 210 toward the click plate 150.

  The steel ball 210 is urged to one click hole 151 in a static state. When the user rotates the power dial 60, the steel ball 210 once rides on the surface of the click plate 150, compresses the spring 220, and transfers to the other click hole 151. At this time, the user can obtain a click feeling by the resistance force of the spring 220.

  The base plate 190 is attached to the exterior member 40 after the sleeve 170, the steel ball 210, the spring 220, and the electrical piece 230 are fixed. The release button 50 and the sleeve 170 are connected in the axial direction. Therefore, when the release button 50 is pressed downward by the user, the sleeve 170 can be displaced downward to come into contact with the electrical piece 230.

  FIG. 3 is a partially enlarged view schematically showing the section support portion 193 of the switch unit 20 according to the present embodiment. In FIG. 3, the section support part 193 from the viewpoint from the lower side is shown. The section support part 193 includes a first support part 194 and a second support part 195. The first support part 194 supports one end of the second piece 232, and the second support part 195 supports one end of the third piece 233.

  The first support portion 194 is formed in a convex shape on the lower surface of the main plate 190. The first support portion 194 is a rectangular parallelepiped having a vertical direction on the paper surface as a longitudinal direction and a horizontal direction on the paper surface as a short direction. Two second support portions 195 are formed in a convex shape with respect to the base plate 190. Each of the second support portions 195 is provided adjacent to both ends of the side surface of the first support portion 194 facing the second shaft 173.

  The support surfaces of the two second support portions 195 have the same height from the ground plane 190, and the support surface of the first support portion 194 has a height from the ground plane 190 higher than that of the second support portion 195. It is formed low. One end of the second section 232 supported by the first support portion 194 is a free end that extends straight. The third section 233 is disposed on the front side of the paper with respect to the second section 232, and one end of the third section 233 supported by the second support portion 195 is a free end formed in a T shape. The third section 233 is supported by each of the two second support portions 195 at each portion extending to the side of the T shape.

  As shown in the drawing, the first support portion 194 and the two second support portions 195 are arranged so as to surround a range of a half or less of the outer peripheral portion of the second shaft 173. With this arrangement, the E-ring 200 can be easily attached to the second shaft 173. Moreover, if the 2nd support part 195 is moved to the 2nd axis | shaft 173 side to such an extent that it does not interfere with the E ring 200, the area which the slice support part 193 occupies can be made small.

  4 is a cross-sectional view taken along line AA of the switch unit 20 in FIG. The inner peripheral surface of the power dial 60 is slidably fitted to the outer peripheral surface of the power dial collar 120. Accordingly, the power dial 60 can rotate around the power dial collar 120.

  The outer peripheral surface of the shaft 53 is slidably fitted to the inner peripheral surface of the body portion 91. The release button 50 can slide up and down with respect to the bearing member 90.

  One end of the drip-proof rubber 80 is supported on the outer peripheral surface of the trunk portion 91. The other end of the drip-proof rubber 80 is in contact with the back surface of the contact surface 51. Therefore, the drip-proof rubber 80 can seal between the back surface of the contact surface 51 and the body portion 91. Therefore, the drip-proof rubber 80 can prevent entry of foreign matter such as water and dust from the gap between the release button 50 and the power dial 60. The drip-proof rubber 80 biases the release button 50 upward.

  The sponge 100 is disposed between the E ring 110 and the bearing member 90 in a state of being compressed in the axial direction. Accordingly, the sponge 100 urges the release button 50 downward. The urging force of the sponge 100 is larger than the urging force of the drip-proof rubber 80. Therefore, the release button 50 is urged downward.

  The two opposing flat surfaces 55 provided on the release button 50 are slidably fitted to the two opposing flat surfaces 177 provided on the sleeve 170. That is, the release button 50 and the sleeve 170 are partially engaged with each other in the radial direction and are continuous in the axial direction. The second shaft 173 is fitted into the insertion hole 191. The inner diameter of the insertion hole 191 is larger than the outer diameter of the second shaft 173. The second shaft 173 is prevented from coming off by the E ring 200.

  The spring 180 is interposed between the sleeve 170 and the main plate 190. The spring 180 biases the sleeve 170 upward. The biasing force of the spring 180 is larger than the biasing force of the sponge 100. Accordingly, there is no axial gap in the fitting portion between the release button 50 and the sleeve 170. Therefore, since there is no back and forth play between the release button 50 and the sleeve 170, the stroke of the release button 50 can be made constant.

  The first stroke is a displacement amount obtained by removing the plate thickness of the first segment 231 from the dimension a in the drawing. When the sleeve 170 is displaced by the first stroke, the tip of the second shaft 173 contacts the first section 231 and then the first section 231 contacts the second section 232. And the electrical piece 230 will be in a 1st conduction state.

  The second stroke is a displacement amount obtained by removing the plate thickness of the second segment 232 and the plate thickness of the fourth segment 234 from the dimension b in the drawing. When the sleeve 170 is displaced by the second stroke, the fourth segment 234 contacts the third segment 233. And the electrical piece 230 will be in a 2nd conduction state. In the present embodiment, the fourth section 234 is used for the purpose of preventing the second section 232 from sagging and improving the reaction force. The fourth section 234 is a lap spring that is displaced integrally with the second section 232.

  Generally, the release button is disposed so as to be exposed to the outside of the camera and is operated by the user. Since the release button is exposed to the outside of the camera, the user can easily recognize the arrangement state of the release button with respect to the appearance member such as the cover. For example, when the release button is arranged so as to be displaced with respect to an appearance member such as a cover, the appearance quality of the camera is lowered. In order to suppress deterioration in the appearance quality of the camera, the release button is often positioned and attached with respect to the appearance member.

  When the user presses the release button, the release button is displaced in the pressing direction. When the release button is displaced, the tip of the release button presses a switch provided on the lower side of the release button. The switch is a member that switches between an electrically conductive state and a non-conductive state when pressed by the release button. The switch is mounted on a circuit board. The circuit board on which the switch is mounted is supported by a support member different from the appearance member. The support member is supported by the camera structure. The exterior member is attached to the structure.

  According to the conventional configuration as described above, the relative positional relationship between the release button and the switch is a cumulative variation in the manufacturing dimensions of the release button, appearance member, support member, circuit board, and switch with respect to the design position. May be greatly deviated. Moreover, assembly errors when the above parts are assembled to each other are also accumulated, and the errors are further enlarged. That is, the release button and the switch are in a relationship that can be largely shifted both in the vertical direction and in the planar direction.

  When the vertical displacement between the release button and the switch occurs, there is a problem in that the amount of displacement of the release button varies until the switch is switched between the conductive state and the non-conductive state. When the release button and the switch are displaced in the plane direction, the release button may not be able to press the center of the switch. When the release button cannot press the center of the switch, it may not be possible to switch between the conductive state and the non-conductive state of the switch. Therefore, there is a problem that even if the user presses the release button, the switch is not switched between the conductive state and the non-conductive state.

  According to the present embodiment, the sleeve 170 and the electrical piece 230 are both supported by the same ground plane 190. The insertion hole 191 is provided so as to penetrate from the reference plane of the main plate 190. The second shaft 173 is inserted through the insertion hole 191. The E ring 200 is attached to the outer periphery of the second shaft 173. The spring 180 is interposed between the sleeve 170 and the base plate 190 and biases the sleeve 170 upward. Even when the sleeve 170 is urged upward by the spring 180, the E-ring 200 does not come out of the insertion hole 191 when the E-ring 200 comes into contact with the reference surface of the main plate 190. That is, the sleeve 170 is positioned in the vertical direction with respect to the reference plane of the main plate 190 by the action of the E-ring 200. However, since the insertion hole 191 is formed to have a gap with respect to the sleeve 170, the sleeve 170 is not positioned with respect to the main plate 190 in the planar direction.

  The first support part 194, the second support part 195, and the section fixing part 196 are formed at accurate positions from the reference plane of the main plate 190. One end of the second section 232 is accurately positioned by being fixed to the section fixing portion 196 via the insulating member 250. The other end of the second section 232 is supported by the first support portion 194 in a state where an urging force is applied to the first support portion 194. Accordingly, the second section 232 is accurately positioned in the vertical direction with respect to the ground plane 190.

  One end of the third section 233 is accurately positioned by being fixed to the section fixing portion 196 via the insulating member 252. The other end of the third section 233 is supported by the second support portion 195 in a state where an urging force is applied to the second support portion 195. Therefore, the third slice 233 is accurately positioned in the vertical direction with respect to the ground plane 190.

  As described above, the first support portion and the 194 second support portion 195 are formed at different heights in the vertical direction. Therefore, the electrical piece 230 is brought into the first conduction state by the displacement of the first stroke of the sleeve 170. The second conductive state can be achieved by the displacement of the second stroke of the sleeve 170.

  The sleeve 170 and the electrical piece 230 are accurately positioned with respect to the same ground plane 190. Since the sleeve 170 and the electrical piece 230 cannot be attached via a plurality of parts, the accumulation of variations can be reduced. Accordingly, it is possible to reduce as much as possible the positional deviation between the sleeve 170 and the electrical piece 230 that may be caused by assembly errors, individual differences in parts, and the like.

  The release button 50 is urged downward by the sponge 100. The sleeve 170 is biased upward by a spring 180. The biasing force of the spring 180 is larger than the biasing force of the sponge 100. Therefore, the sleeve 170 contacts the lower surface of the insertion hole 191 and is accurately arranged in the vertical direction. Further, the sleeve 170 is in close contact with the release button 50 in the vertical direction.

  When the user displaces the release button 50 by the first stroke, the sleeve 170 can be displaced by the first stroke integrally with the release button 50. The tip of the second shaft 173 presses the first section 231, and the first section 231 is bent downward and makes point contact with the hemispherical protrusion of the second section 232. When the first section 231 and the second section 232 come into contact, the first conduction state can be accurately established.

  Further, when the user displaces the release button 50 by the second stroke, the sleeve 170 can be displaced by the second stroke integrally with the release button 50. Then, the first section 231, the second section 232, and the fourth section 234 are integrally bent downward to make point contact with the hemispherical protrusion of the third section 233. When the 4th section 234 and the 3rd section 233 contact, it can be in the 2nd conduction state correctly.

  Therefore, according to the present embodiment, the displacement of the first stroke and the second conduction state in which the release button 50 is in the first conduction state without deteriorating the appearance quality by positioning and attaching the release button 50 to the exterior member 40. The variation in the displacement of the second stroke can be reduced.

  As described above, it is desirable that the release button 50 be positioned on the exterior member 40 from the viewpoint of appearance quality. In the present embodiment, the power dial collar 120 is positioned with reference to the exterior member 40. The power dial 60 is positioned with respect to the outer periphery of the power dial collar 120. Specifically, the inner periphery of the power dial 60 is slidably fitted to the outer periphery of the power dial collar 120.

  The release button 50 is positioned with reference to the power dial 60. Specifically, the outer periphery of the shaft 53 is slidably fitted to the inner periphery of the body portion 91. With the above assembly, the release button 50 is positioned with reference to the exterior member 40. The release button 50 is attached to the exterior member 40 via a plurality of parts such as the exterior member 40, the power dial collar 120, the power dial 60, and the bearing member 90. That is, the release button 50 is positioned with respect to the exterior member 40 in the planar direction.

  As described above, the sleeve 170 is positioned in the vertical direction with respect to the base plate 190, but is not positioned in the planar direction. Accordingly, the sleeve 170 can be connected in the axial direction to the release button 50 positioned in the planar direction with the exterior member 40 as a reference. That is, the release button 50 is positioned with respect to the plane member in the plane direction with respect to the exterior member 40, and is positioned with respect to the reference plane of the main plate 190 in the vertical direction. By configuring in this way, according to the switch unit 20 of the present embodiment, it is possible to realize a conduction state by the first stroke and the second stroke that are extremely close to the design values while maintaining excellent appearance quality. . For example, when the first stroke and the second stroke as design values are equal, the actual first stroke and second stroke of the assembled switch unit 20 can be expected to be substantially equal. In addition, the strokes of the assembled products do not vary from each other, and high quality can be expected.

  FIG. 5 is an external perspective view of the release button 50 and the sleeve 170 of the switch unit 20 according to the present embodiment. Two flat surfaces 55 facing each other are formed on the outer periphery of the shaft 53. That is, the shaft 53 has a so-called two-way machining at the tip.

  Two flat surfaces 177 facing each other are formed on the outer periphery of the groove portion 174. That is, the groove 174 is so-called two-sided. The two planes 55 are slidably fitted with the two planes 177 in the axial direction. That is, the release button 50 can slide in the axial direction with respect to the sleeve 170. The sleeve 170 can slide with respect to the release button 50 within the range of the dimension c shown in the figure. In the present embodiment, when the sleeve 170 is displaced in the axial direction, the first shaft 172 is formed to be longer than the fitting length indicated by the dimension c in order to suppress the axial collapse. Since the two flat surfaces 55 and the two flat surfaces 177 are fitted, the release button 50 and the sleeve 170 do not slide relative to each other around the axis.

  The protruding portion 175 protrudes from the body portion 171 in the radial direction and is formed to extend upward. As will be described in detail later, the protrusion 175 is restricted from rotating about its axis by a rotation restricting member. Since the release button 50 is connected to the sleeve 170 in the axial direction, if the rotation of the sleeve 170 around the axis is restricted, the rotation of the release button 50 around the axis is restricted. Therefore, the user can easily attach the cable release to the release button 50.

  FIG. 6 is a diagram for explaining the rotation restriction of the sleeve 170 and the rotation restriction of the power dial 60 of the switch unit 20 according to the present embodiment. FIG. 6A schematically shows a state in which the rotation of the power dial 60 and the rotation of the sleeve 170 are restricted by the protrusion 123 from the viewpoint from the lower side.

  The protrusion 123 is formed in an arc shape. The arc center of the protrusion 123 is the same as the rotation center of the power dial 60 and the sleeve 170. The relationship between the sleeve 170 and the protrusion 123 and the relationship between the power dial 60 and the protrusion 123 will be described with reference to FIGS.

  FIG. 6B schematically shows a state in which the rotation of the sleeve 170 is restricted by the protrusion 123. The two protrusions 123 have a restriction surface 124 on each side surface. The two restricting surfaces 124 are formed corresponding to the side surfaces 178 of the protrusion 123, respectively. The two protrusions 123 sandwich the protrusion 175 from the circumferential direction. The side surface 178 of the protruding portion 175 can regulate the rotation of the sleeve 170 around the axis by contacting the regulating surface 124. The chamfered portion 125 is formed on a ridge line between the regulating surface 124 and the upper surface of the protrusion 123. When the protruding portion 175 is inserted between the two protruding portions 123 from the lower side, the protruding portion 175 is easily inserted between the two protruding portions 123 by the chamfered portion 125.

  FIG. 6C schematically shows a state in which the protrusion 123 limits the rotation of the power dial 60. The two protrusions 123 have a restriction surface 126 on each side surface. The limiting surface 126 is a plane along the radial direction. The protrusion 123 enters the notch 134. The notch 134 is formed by notching the inner periphery of the brush support member 130 in the radial direction. When the power dial 60 rotates, the radial side surface 135 of the notch 134 abuts on the limiting surface 126 to limit the rotation of the power dial 60. That is, in a state where one limiting surface 126 and one side surface 135 are in contact, the rotation angle of the power dial 60 is limited by the angle θ formed by the other limiting surface 126 and the side surface 135 of the other notch 134. be able to.

  In the present embodiment, the protrusion 123 serves as a rotation restricting member that restricts the rotation of the sleeve 170 in the axial direction and a rotation restricting member that restricts the rotation angle of the power dial 60. That is, when viewed from the direction of the shaft 53, the rotation restricting member and the rotation restricting member are arranged on the same diameter. That is, when viewed from the axial direction of the release button 50, the rotation restricting member and the rotation restricting member are arranged at least partially on the same diameter, so that the switch unit 20 has a large area in the radial direction. Can be suppressed. Further, as shown in FIG. 6A, the E-ring 110 is at least partially disposed on the same diameter as the protrusion 123 when viewed from the direction of the shaft 53. That is, when viewed from the axial direction of the release button 50, the E-ring 110 is disposed at least partially on the same diameter with each of the rotation restricting member and the rotation restricting member. An increase in the area in the radial direction can be suppressed.

  FIG. 7 is a diagram illustrating a state in which the release button 50 is pressed by the user's finger and a state in which the sleeve 170 is pressed by the cable release 300. FIG. 7A shows a state in which the release button 50 is pressed downward by the user's finger. When the release button 50 is directly pressed by the user's finger, the sleeve 170 is displaced downward together with the release button 50 in response to the displacement of the release button 50. Then, the sleeve 170 makes the electrical piece 230 conductive. That is, when the user presses the release button 50, the sleeve 170 can realize the first conduction state or the second conduction state.

  FIG. 7B shows a state where the sleeve 170 is pressed by the cable release 300. When the sleeve 170 is pressed by the cable release 300, the release button 50 is not displaced. The cable release 300 includes a mounting portion 302, a pressing shaft member 304, and a tube 308. A male screw is machined on the outer periphery of the mounting portion 302. A female screw is machined on the inner periphery of the insertion hole 52. The attachment portion 302 has a through hole 306 in the center. The attachment portion 302 is fastened to the insertion hole 52 and attached to the release button 50. The tube 308 is provided on the upper side of the attachment portion 302.

  The pressing shaft 304 is inserted into the tube 308 and the through hole 306 so as to be able to advance and retract. When the user presses the pressing shaft 304, the tip of the pressing shaft 304 presses the sleeve 170. That is, when the user presses the pressing shaft member 304, the sleeve 170 is displaced downward together with the pressing shaft member 304 in response to the displacement of the pressing shaft member 304. Then, the sleeve 170 makes the electrical piece 230 conductive. That is, even if the user presses the pressing shaft member 304 without pressing the release button 50, the sleeve 170 can realize the first conduction state or the second conduction state.

  As described above, according to the switch unit 20 of the present embodiment, the electrical piece 230 is placed in the first conduction state or the second state for both the direct operation by the user and the indirect operation by the cable release. It can be in a conductive state.

  In the above embodiment, an example in which the sleeve 170 is prevented from being detached from the main plate 190 using the E-ring 200 has been shown. However, the stopper of the sleeve 170 may be other than the E-ring 200. For example, the sleeve 170 may be prevented from coming off by providing a snap fit on the second shaft 173. In addition, an example in which the release button 50 is prevented from being detached from the bearing member 90 using the E-ring 110 has been shown. The release button 50 may be prevented from coming off by providing a snap fit as an extension on the shaft 53. Since the number of parts can be reduced by using the snap fit, the part cost can be reduced. Furthermore, if a snap fit is used, assembly can be simplified.

  In the above embodiment, the example in which the power dial 60 and the bearing member 90 are separated from each other is shown in order to reduce the cost while improving the appearance quality of the power dial 60. However, the power dial 60 and the bearing member 90 may be integrally formed. By forming the power dial 60 and the bearing member 90 integrally, the number of parts can be reduced, so that the part cost can be reduced. Furthermore, since the number of parts can be reduced, assemblability can be improved.

  In the above embodiment, the example which made the brush support member 130 and the click board 150 separate was shown. However, the brush support member 130 and the click plate 150 may be integrally formed. That is, the click hole 151 may be formed on the lower surface of the brush support member 130. By integrally forming the brush support member 130 and the click plate 150, the number of parts can be reduced, and the part cost can be reduced. Furthermore, since the number of parts can be reduced, assemblability can be improved.

  In the above embodiment, the example which provided the protrusion part 175 in the sleeve 170 and controls rotation of the sleeve 170 was shown. However, when the cable release 300 is used, it is sufficient that the rotation of the release button 50 is limited. Therefore, a protrusion may be provided on the release button 50 to restrict the rotation of the release button 50. Specifically, the body 91 may be formed on the outer periphery of the body 91 with a groove having a shape corresponding to the protrusion. By fitting the protruding portion of the release button 50 into the groove portion of the bearing member 90, the release button 50 is restricted from rotating around the axis with respect to the bearing member 90. In the case where the release button 50 is provided with a protruding portion, the two-side cutting process may not be performed on the connecting portion in the axial direction with the sleeve 170. That is, when the rotation of the release button 50 is restricted, the sleeve 170 may rotate.

  In the above embodiment, the section support part 193 is formed so as to surround the E-ring 200 with a half or less circumference. However, the section support portion 193 may have a smaller size in the longitudinal direction so as to have substantially the same width as the outer shape of the E-ring 200. By reducing the size of the section support part 193 in the longitudinal direction, the section support part 193 can be reduced in size. Thereby, the occupation area of the electrical piece 230 with respect to the ground plane 190 can be made small.

  In the above embodiment, the example in which the switch unit 20 is applied to the camera 10 in which the lens unit 14 is detachably attached to the camera unit 12 has been described. However, the switch unit 20 may be applied to the camera 10 that includes the lens unit 14 integrally.

  Further, in the above embodiment, the switch unit 20 is applied as a release switch constituting the camera unit 12. However, the application range is not limited to the release switch, and the switch unit 20 is used in a wide range of applications as a switch unit of an electronic device. can do.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

10 camera, 12 camera unit, 14 lens unit, 20 switch unit, 40 exterior member, 41, 52, 191 insertion hole, 50 release button, 51 contact surface, 53 axis, 54, 176 groove, 55 plane, 60 power dial, 61 recess, 62, 306 through-hole, 80 drip-proof rubber, 90 bearing member, 91, 121, 171 trunk, 92, 122 collar, 100 sponge, 110, 200 E-ring, 120 power dial collar, 123 protrusion, 124 Restricting surface, 125 Chamfered portion, 126 Restricted surface, 130 Brush support member, 131 Base portion, 132 Mounting portion, 133 Brush fixing portion, 134 Notch portion, 135, 178 Side surface, 140 Contact brush, 150 Click plate, 151 Click hole, 160, 240 screw, 170 sleeve, 17 1st axis, 173 2nd axis, 174 Groove part, 175 Projection part, 177 Plane, 180, 220 Spring, 190 Ground plane, 192 Spring accommodating part, 193 Section support part, 194 1st support part, 195 2nd support part, 196 Section fixing part, 210 Steel ball, 230 Electrical section, 231 First section, 232 Second section, 233 Third section, 234 Fourth section, 250, 252 Insulating member, 300 Cable release, 302 Mounting section, 304 Press shaft , 308 tubes

Claims (12)

A displacement member that is displaced in a first direction with respect to the exterior member;
A rotating member that rotates in a plane that intersects the first direction with respect to the displacement member;
The displacement member has a protrusion protruding in a second direction intersecting the first direction;
A pair of protrusions fixed to the exterior member that limit the rotation of the displacement member in a plane intersecting the first direction with the protrusion interposed therebetween and limit the rotation angle of the rotation member. When,
A switch unit comprising:   2. The switch unit according to claim 1, wherein the pair of protrusions includes a pair of first surfaces sandwiching the protrusion and a second surface that contacts the rotating member by rotation of the rotating member.   The switch unit according to claim 1, wherein the pair of protrusions are provided on a support portion that is provided on the exterior member and rotatably supports the rotating member. The displacement member has pushed down pressing member connected to electrical sections in the first direction,
4. The switch unit according to claim 1, wherein the protruding portion protrudes from the push-down member in the second direction . 5.   The switch unit according to claim 4, wherein the displacement member and the push-down member are integrally provided so as not to rotate with respect to each other in a plane intersecting the first direction. A ground plate provided with the electrical section;
A spring member that pushes up the push-down member in a direction away from the base plate;
The switch unit according to claim 4 or 5. When the displacement member is displaced in the first direction, the push-down member is displaced in the first direction together with the displacement member to push down the electrical piece,
If the pressing member is pressed in the first direction without moving the displacement member in the first direction, the pressing member is displaced in the first direction with respect to the displacement member. The switch unit according to claim 6 , wherein the electrical section is pushed down.   The switch unit according to claim 7, wherein the displacement member has an insertion hole through which a shaft member that pushes down the push-down member and moves relative to the displacement member in the first direction is inserted. A circuit pattern provided on the ground plane;
A contact brush that contacts the circuit pattern;
The switch unit according to claim 6 , further comprising a brush support member that supports the contact brush and rotates around the displacement member together with the rotation member. The displacement member has a flange extending in the second direction on the ground plane side than the rotating member,
10. The switch unit according to claim 6 , further comprising an elastic member that is disposed between the rotating member and the flange portion and pushes down the displacement member toward the push-down member.   The switch unit according to claim 10, wherein a force by which the spring member pushes up the push-down member is larger than a force by which the elastic member pushes down the displacement member.   An imaging apparatus comprising the switch unit according to any one of claims 1 to 11 as a release switch.