JP2012113110A - Electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce an operation sound generated by operation of an operating member rotatable relative to an electronic apparatus body.SOLUTION: An electronic apparatus has the operating member rotatable relative to the electronic apparatus body, an elastic member having an opening in a direction approximately perpendicular to a rotation direction of the operating member, and control means for performing control of a function corresponding to the operating member based on the operation amount to the operating member. The control means performs first control when the operation amount to the operating member reaches a first operation amount, and performs second control when the operation amount to the operating member reaches a second operation amount larger than the first operation amount. The elastic member is disposed at a position abutting against the operating member when the operating member is operated at an operation amount equal to or larger than a third operation amount that is larger than the first operation amount and smaller than the second operation amount.

Description

  The present invention relates to an electronic apparatus having an operation member that can rotate as a main body of the apparatus.

  Conventionally, in an imaging apparatus such as a digital still camera or a video camera, an optical zoom function for changing a magnification by moving a part of a lens of a photographing optical system on an optical axis, and an image signal from an image sensor are electronically transmitted. Some have an electronic zoom function that is controlled to perform enlarged display of the screen. Some of these imaging apparatuses can use an optical zoom function and an electronic zoom function during moving image recording.

  Some of these imaging apparatuses perform optical and electronic zoom operations by rotating a zoom lever that can be rotated when using the optical and electronic zoom functions. The zoom operation by rotating the zoom lever allows the subject to be checked on the image display unit, etc., compared to the configuration in which different buttons are operated when the zoom magnification is changed to the wide-angle side and when the zoom magnification is changed to the telephoto side. However, it is widely used because it allows easy zooming.

  For example, in Patent Literature 1, a spring piece and a zoom lever for returning the zoom lever to a neutral position within a range in which the zoom operation can be performed are integrated with a zoom operation device that performs zoom operation by rotating the zoom lever. A zoom operation device has been proposed.

Japanese Patent Laid-Open No. 10-339838

  However, in the configuration of the zoom operation device of Patent Document 1, when the zoom lever is rotated to the wide-angle side or the telephoto side, the side surface of the slit provided in the zoom lever restricts the rotation angle range of the zoom lever. There is a problem that the contact sound is generated due to contact. In particular, if the above-mentioned contact sound is generated when moving the zoom lever to the telephoto side so as to enlarge the captured image to obtain a desired enlarged image during moving image recording, the photographer does not intend. There was a problem that the contact sound was also recorded.

  In view of the above, an object of the present invention is to reduce an operation sound caused by an operation on an operation member that can be rotated as a device body.

  In order to achieve the above object, an electronic device according to the present invention includes an operation member that can rotate as a device body, an elastic member having an opening in a direction substantially perpendicular to the rotation direction of the operation member, Control means for controlling a function corresponding to the operation member based on an operation amount to the operation member, and the control means has an operation amount for the operation member reaching a first operation amount. Then, the first control is performed, and when the operation amount to the operation member reaches a second operation amount larger than the first operation amount, the second control is performed, and the elastic member is the operation member. Is disposed at a position where it comes into contact with the operation member when operated with an operation amount greater than or equal to the third operation amount greater than the first operation amount and smaller than the second operation amount.

  ADVANTAGE OF THE INVENTION According to this invention, the operation sound which arises with operation to the apparatus main body and the operation member which can be rotated can be reduced.

1 is an overall perspective view of a digital camera 1 according to an embodiment of the present invention. 2 is a detailed view of a zoom operation mechanism of the digital camera 1. FIG. FIG. 3 is an explanatory diagram of a flexible substrate in a zoom operation mechanism of the digital camera 1. FIG. 3 is an explanatory diagram of a rotatable range of the zoom operation mechanism of the digital camera 1. The figure which shows the state transition of the zoom operation mechanism of the digital camera. The figure which shows the relationship between the state of zoom operation | movement, and the load of rotation operation 2 is an exploded view of a zoom operation mechanism of the digital camera 1. FIG. The figure which looked at the zoom operation mechanism of the digital camera 1 from the bottom side. FIG. 3 is a cross-sectional view of the zoom operation mechanism of the digital camera 1 along AA. 2 is a detailed view of a zoom operation mechanism of the digital camera 1. FIG. FIG. 3 is an explanatory diagram of an elastic member 12 in the zoom operation mechanism of the digital camera 1. BB sectional drawing of the zoom operation mechanism of the digital camera 1. FIG.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is an overall perspective view of a digital camera 1 of an electronic apparatus according to an embodiment of the present invention.

  The digital camera 1 can perform optical zoom and electronic zoom on the wide-angle side and the telephoto side by rotating the zoom lever 3 with respect to the device body. By pressing the release button 2 at the center of the zoom lever, it is possible to perform shooting in the zoom state adjusted by operating the zoom lever 3.

  Further, the digital camera 1 can change the speed at which the zoom magnification is changed (hereinafter referred to as zoom speed) to either low speed or high speed in accordance with the operation amount of the zoom lever 3.

  Next, the zoom operation mechanism of the digital camera 1 will be described with reference to FIG. FIG. 2 is a perspective view of the digital camera 1 as seen from the bottom side and the back side.

  The zoom lever 3 is attached to the zoom holder 6 so as to sandwich the exterior 4, and when the zoom lever 3 is operated, the zoom lever 3 and the zoom holder 6 rotate together. A brush 7 made of a conductive material, a cylindrical elastic body 8 made of an elastic member, and a torsion spring 11 are attached to the zoom holder 6, and these rotate together with the zoom lever 3.

  Further, an elastic body 12 having a substantially circular opening is attached to the exterior 4, and the protrusion 6 g provided on the zoom holder 6 contacts the elastic body 12 as the zoom holder 6 rotates. When the zoom holder 6 is further rotated in a state where the protrusion 6g is in contact with the elastic body 12, the elastic body 12 is pushed in by the protrusion 6g.

  Further, a protruding elastic body 9 having a protruding end is attached to the exterior 4, and the protruding elastic body 9 and the cylindrical elastic body 8 have substantially the same diameter. A torsion spring 11 is attached to the zoom holder 6 so as to sandwich these two elastic bodies from both sides. Thereby, the zoom lever 3 is held at a predetermined position with respect to the exterior 4. In the present embodiment, this predetermined position is a neutral position in a range in which the zoom lever 3 can be rotated, and is a position in an initial state where no operation is performed on the zoom lever 3. When the user rotates the zoom lever 3, the zoom lever 3 is rotated against the urging force of the torsion spring 11.

  With the above components attached to the zoom holder 6 or the exterior 4, the plate 13 is attached to the exterior 4 and fixed. A flexible substrate 14 is disposed on the surface of the zoom holder 6 on the plate 13, and a pattern of the flexible substrate 14 to be described later and a contact portion 7 b at the tip of the brush 7 are brought into contact with each other with an appropriate contact pressure. The plate 13 and the exterior 4 are fixed.

  Next, the flexible substrate 14 will be described with reference to FIG. FIG. 3 is a view of the plate 13 as viewed from the direction A in FIG. 2 (the direction of the zoom holder 6), and is a view with the brush 7 added for explanation. In FIG. 3, the brush 7 is in a state when the zoom lever 3 is in the neutral position.

  When the zoom lever 3 rotates, the brush 7 rotates together with the zoom lever 3. As shown in FIG. 3, the flexible substrate 14 is provided with several patterns, and the conductive brush 7 rotates on the pattern as the zoom lever 3 rotates. Then, based on a signal obtained by short-circuiting the patterns, a microcomputer (not shown) changes the zoom direction and changes the zoom speed for changing the low speed zoom (first control) and the high speed zoom (second control). Perform zoom control such as change.

  For example, in this embodiment, when the brush 7 rotates to short-circuit the patterns 14a and 14b, a signal for low-speed zooming to the telephoto side, and when further rotated to short-circuit the patterns 14a and 14c, high-speed zooming to the telephoto side is performed. A signal is output. When the brush 7 exists only in the pattern 14a, a signal for changing the zoom magnification is not output. A similar pattern is provided on the wide-angle side, and the zoom speed is changed according to the amount of operation with respect to the zoom lever 3.

  In the present embodiment, the zoom operation mechanism is capable of changing the zoom speed in two steps, low speed and high speed. However, the zoom operation mechanism is not limited to this. The zoom operation mechanism may be used.

  Next, the rotatable range of the zoom operation mechanism will be described with reference to FIG. FIG. 4 is a view showing only the exterior 4 and the zoom lever 3 as seen from the bottom side of the digital camera 1.

  A rotary shaft 3c of the zoom lever 3 is fitted into a circular hole 4a provided in the exterior 4, and the zoom lever 3 can be rotated around the rotary shaft 3c.

  Further, the exterior 4 is provided with arcuate holes 4b through which the mounting bosses 3a and 3b provided on the zoom lever 3 are passed. The mounting boss 3a indicated by the solid line represents the position when the zoom lever 3 is in the neutral position. When the zoom lever 3 is rotated, the mounting boss 3a hits the wall 4d of the arc hole 4b, The zoom lever 3 cannot be rotated any further. A mounting boss 3a indicated by a broken line represents a position when the zoom lever 3 is rotated in a direction (first direction) in which the zoom magnification is changed to the telephoto side until the mounting boss 3a hits the wall 4d. Similarly, when the zoom lever 3 is rotated in the direction (second direction) for changing the zoom magnification to the wide angle side, the zoom lever 3 can be rotated until the mounting boss 3a hits the wall 4e.

  As described above, the rotatable range of the zoom lever 3 is limited by the mounting boss 3a and the circular arc hole 4b, and the zoom lever 3 is rotated so that the mounting boss 3a hits the walls 4d and 4e of the circular arc hole 4b. The angle is the rotation limit angle.

  Next, state transition of the zoom operation mechanism will be described with reference to FIG. In the following description, the state transition when the zoom lever 3 is rotated in the direction to change the zoom magnification to the wide angle side will be described, but the zoom lever 3 is rotated in the direction to change the zoom magnification to the telephoto side. The same is true for the state transition when it is performed. FIG. 5 is a view showing the zoom operation mechanism as seen from the bottom side of the digital camera 1, and the plate 13 and the flexible substrate 14 are omitted for the sake of explanation.

  FIG. 5A shows a state where the zoom lever 3 is in a neutral position, that is, an initial state of the zoom lever 3. The torsion spring 11 attached to the zoom holder 6 is arranged so that the cylindrical elastic body 8 arranged on the zoom holder 6 and the protruding elastic body 9 arranged on the exterior 4 are sandwiched between the arm portions on both sides. At this time, the zoom holder 6 is held in the neutral position by the urging force of the torsion spring 11. That is, the torsion spring 11 is configured so that when the zoom lever 3 is rotated, the cylindrical elastic body 8 and the protruding elastic body 9 are in an initial state so that the relative positions of the cylindrical elastic body 8 and the protruding elastic body 9 are in the initial state. Energize at least one.

  Further, an elastic body 12 is attached to the exterior 4, and the elastic body 12 is provided with a substantially circular opening 12 a in a direction substantially perpendicular to the rotation direction of the zoom lever 3. As will be described later, the shape of the opening 12a changes according to the amount of operation of the zoom lever 3 as the elastic body 12 is pushed into the projection 6g. In the drawing, the opening 12 a is provided in a direction substantially perpendicular to the exterior 4, but it may be provided in a direction substantially parallel to the exterior 4.

  The elastic body 12 is arranged at two locations so that it functions in each of the case where the zoom lever 3 is rotated in the direction to change the zoom magnification to the telephoto side and the direction in which the zoom lever 3 is rotated to the wide angle side. Has been. Further, as shown in the figure, the width of the circumferential opening 12a around the rotation shaft 3c is θa when the rotation angle of the zoom lever 3 is taken.

  In the following, for the sake of explanation, a straight line connecting the rotation shaft 3c and the protruding elastic body 9 is defined as a reference θ0 when the rotation angle of the zoom lever 3 is described, and the rotation is performed as the zoom lever 3 rotates. The angle at which the cylindrical elastic body 8 is rotated from θ0 will be described as the rotation angle of the zoom lever 3. When the zoom lever 3 is in the neutral position, the cylindrical elastic body 8 is positioned on a straight line connecting the rotation shaft 3c and the protruding elastic body 9.

  FIG. 5B shows a control in which the zoom lever 3 is rotated from the state shown in FIG. 5A in a direction to change the zoom magnification to the wide angle side, and the zoom speed is changed from the control without changing the zoom magnification to the wide angle side. It shows the state of switching to.

  In the state shown in FIG. 5B, one tip 11b of the torsion spring 11 is in contact with the protruding elastic body 9, the other tip 11a is in contact with the cylindrical elastic body 8, and the zoom lever 3 is in the neutral position. The urging force of the torsion spring 11 is working so as to return. Note that the rotation angle of the zoom lever 3 in this state is θs (first operation amount).

  FIG. 5C shows a state in which the projection 6g provided on the zoom holder 6 has the elastic body 12 when the zoom lever 3 is rotated from the state of FIG. 5B in a direction to change the zoom magnification to the wide angle side. The state of starting to contact the tip of the lens is shown, and the control for slow zooming toward the wide angle side is maintained.

  If the zoom lever 3 is further rotated from this state in a direction to change the zoom magnification to the wide angle side, the projection 6g and the elastic body 12 are in contact with each other. I feel a change in the load. That is, until the projection 6g and the elastic body 12 contact each other, the load of the rotation operation of the zoom lever 3 is only the urging force of the torsion spring 11, but the zoom lever 3 is moved more than the state of FIG. When it is rotated, the reaction force of the elastic body 12 is applied to the load of the rotation operation.

  The contact position between the protruding portion 6g and the elastic body 12 in this state is a point P, and the rotation angle of the zoom lever 3 is θx (third operation amount).

  FIG. 5D shows a state in which the zoom lever 3 is rotated from the state shown in FIG. 5C in the direction to change the zoom magnification to the wide angle side, and the zoom is performed at a high speed from the control at a low speed toward the wide angle side. A state of switching to control is shown.

  In this state, since the elastic body 12 is pressed and compressed by the protrusion 6g, the load of the rotation operation of the zoom lever 3 is added to the elastic body 12 in addition to the urging force of the torsion spring 11 as described above. The reaction force of is added.

  Note that the rotation angle of the zoom lever 3 in this state is θh (second operation amount).

  FIG. 5E shows a state in which the zoom lever 3 is rotated from the state of FIG. 5C in a direction to change the zoom magnification to the wide angle side, and the rotation angle of the zoom lever 3 is the rotation limit angle described above. The state reached is shown. Note that the contact position between the protruding portion 6g and the elastic body 12 in this state is a point Q, and the rotation angle of the zoom lever 3 is θe (fourth operation amount). Further, the difference between the positions of the point Q and the point P in the circumferential direction around the rotation shaft 3c becomes θb when the rotation angle of the zoom lever 3 is taken.

  Next, a series of flows when operating the zoom lever 3 will be described with reference to FIG. FIG. 6 is a diagram illustrating the relationship between the zoom control state and the load of the rotation operation in correspondence with the rotation state of the zoom lever 3. In zoom control, ○ in the figure is in the ON state, and in the load of the rotation operation, the state where each urging force is applied to the load is indicated as ○.

  When the user rotates the zoom lever 3 in the direction to change the zoom magnification from the initial state to the wide angle side, if the rotation angle is less than θx, the load of the rotation operation is only the urging force of the torsion spring 11. Then, when the zoom lever 3 is rotated and the rotation angle reaches θs, control is performed to zoom at a low speed toward the wide angle side.

  When the zoom lever 3 is rotated and the rotation angle reaches θx, the projection 6g of the zoom holder 6 and the elastic body 12 attached to the exterior 4 start to contact each other. Therefore, when the rotation angle becomes larger than θx, the reaction force of the elastic body 12 is applied to the urging force of the torsion spring 11 as a load of the rotation operation.

  When the zoom lever 3 is further rotated and the rotation angle reaches θh, the control is changed from the low-speed zoom control to the wide-angle side to the high-speed zoom control to the wide-angle side.

  Thereafter, when the zoom lever 3 is rotated and the rotation angle reaches θe, the rotation limit angle is reached, and the rotation cannot be further performed.

  As described above, the change amount of the parameter of the zoom operation, that is, the zoom speed can be changed according to the operation amount of the zoom lever 3, and the load on the operation changes according to the operation amount. The speed can be changed easily.

  Next, the load for the operation in the state of zooming at low speed and the load for the operation in the state of zooming at high speed will be described in detail.

  As described above, when the rotation angle of the zoom lever 3 is less than θx, the load of the rotation operation is only the urging force of the torsion spring 11. The biasing force of the torsion spring 11 is set so as to be a light biasing force enough to return the zoom lever 3 to the neutral position after the operation of the zoom lever 3 is completed. Can be rotated.

  After the rotation angle becomes θx or more (third operation amount or more) and the protrusion 6g and the elastic body 12 come into contact with each other, the reaction force of the elastic body 12 is applied to the load of the rotation operation. In the present embodiment, the distal end portion 12b of the elastic body 12 (the portion on the side in contact with the protruding portion 6g) is made convex so that the reaction force of the elastic body 12 becomes an appropriate force, and the substantially circular opening 12a is formed. Provided.

  This is because the elastic body 12 pushed by the projection 6g is retracted in the rotation direction of the zoom lever 3 by the rotation of the zoom lever 3. If the elastic body 12 is not provided with the opening 12a, the elastic body 12 is compressed as much as it is pushed into the protrusion 6g, so that the reaction force of the elastic body 12 becomes too large. If the reaction force of the elastic body 12 is too large, it is necessary for the user to apply a large force in order to change to the control for zooming at high speed. The operability is not good.

  By providing the opening 12a as in the present embodiment, the load of the rotation operation can be appropriately changed between when only the urging force of the torsion spring 11 and when the reaction force of the elastic body 12 is applied. That is, the user can easily change between the low speed zoom and the high speed zoom by adjusting the turning power, which is light turning power in a state of low speed zooming and moderate turning power in a state of high speed zooming.

  In the present embodiment, the shape and position of the opening 12a are set as follows. As described above, the width of the circumferential opening 12a around the rotation shaft 3c is θa when the rotation angle of the zoom lever 3 is taken. As described above, the rotation angle from when the protrusion 6g and the elastic body 12 start to contact until the zoom lever 3 reaches the rotation limit angle is θb. In the present embodiment, the size of the opening 12a is set so that θa≈θb. This indicates that the elastic body 12 can be retracted in the rotation direction until the zoom lever 3 substantially reaches the rotation limit angle even when pushed into the protrusion 6g. By doing so, it is possible to prevent the reaction force of the elastic body 12 from becoming extremely large, and to give a comfortable operational feeling to the user. Further, in the present embodiment, θa≈θb is set in consideration of variations in actual processed part dimensions. However, in reality, the relief shape is obtained when the rotation angle, which is a state in which high-speed zoom is performed, is in a state from θx to θh. As long as it exists, θa ≧ θh−θx may be satisfied. That is, the width of the opening 12a in the rotation direction of the zoom lever 3 may be equal to or larger than the movement amount from the contact with the elastic body 12 of the zoom lever 3 to the rotation limit.

  In the present embodiment, the opening 12a in the elastic body 12 is disposed at the rear end 12d, which is the side that does not contact the projection 6g from the center in the rotation direction of the zoom lever 3. This is to ensure the thickness of the elastic body 12 on the tip 12b side so that the reaction force of the elastic body 12 becomes an appropriate force in the state of high speed zooming.

  The reason why the tip 12b of the elastic body 12 has a convex shape is to make it easier for the force pushed by the protrusion 6g to concentrate in the rotational direction. By making it easier to concentrate the pushing force of the protrusion 6g in the rotation direction, the elastic body 12 is pushed in the direction of the opening 12a, and the elastic body 12 can be efficiently retracted to the opening 12a.

  Next, noise reduction during the operation of the zoom operation mechanism in the present embodiment will be described. In the zoom operation mechanism in the present embodiment, three types of collisions occur as the zoom lever 3 is operated.

  The first is a collision between the protrusion 6g and the elastic body 12 when the zoom lever 3 is rotated. In the present embodiment, by using a rubber material for the elastic body 12, the collision sound generated by the collision between the protrusion 6 g and the elastic body 12 is reduced.

  The second is a collision between the mounting boss 3a of the zoom lever 3 and the wall 4d in the arc hole 4b of the exterior 4 when the zoom lever 3 is rotated to the rotation limit angle. In this embodiment, before the mounting boss 3a and the wall 4d collide, as described above, the protrusion 6g and the elastic body 12 that is a rubber material come into contact with each other to reduce the momentum of the collision. The collision sound generated by the collision with the wall 4d is reduced.

  The third is a collision between the torsion spring 11 and the cylindrical elastic body 8 and the protruding elastic body 9 when the operation on the zoom lever 3 is finished and the zoom lever 3 returns to the neutral position. When the zoom lever 3 returns to the neutral position, the tips 11a and 11b of the torsion spring 11 collide with the cylindrical elastic body 8 and the protruding elastic body 9 and bounce a plurality of times, and then settle to the neutral position. In the present embodiment, by using a rubber material for both the cylindrical elastic body 8 and the protruding elastic body 9, the collision sound generated by the collision between the torsion spring 11 and the cylindrical elastic body 8 and the protruding elastic body 9 is reduced. is doing.

  In this embodiment, rubber materials are used for the cylindrical elastic body 8, the protruding elastic body 9, and the elastic body 12, but other members may be used as long as they are elastic bodies that can reduce the impact sound. Good.

  As described above, in the present embodiment, for a plurality of collisions that occur when the zoom lever 3 is operated, at least one member involved in each collision is used as an elastic body, thereby generating an operation sound. Can be reduced. Alternatively, instead of using a member involved in the collision as an elastic body, the operation sound generated by reducing the momentum at the time of collision with another elastic body before the collision occurs can be reduced.

  In the present embodiment, countermeasures against static electricity are taken by the protruding elastic body 9 contributing to noise reduction. Next, countermeasures against static electricity in this embodiment will be described.

  As shown in FIG. 7, the exterior 4 has a hole 4 a and an arc hole 4 b. The zoom lever 3 and the zoom holder 6 are attached so as to sandwich the hole 4a and the arc hole 4b, but there is a slight gap for sliding. Static electricity generated externally passes through the hole 4a, the circular hole 4b, and the gap for sliding, enters the inside, and is transmitted to a metal part not connected to the internal ground, for example, the torsion spring 11 or the like. . As a result, the pattern is formed on the flexible substrate 14 in the vicinity of the torsion spring 11 and electrical components such as the switch 14d are transmitted to the microcomputer or the like to which they are connected and destroyed. In addition, static electricity may be directly transmitted to these electrical components and destroyed. In order to prevent these, it is necessary to connect these metal parts to the ground.

  Therefore, in the present embodiment, the torsion spring 11 is electrically connected to a chassis (not shown) that is a ground member to prevent static electricity by using the protruding elastic body 9 as a conductive rubber material.

  Next, the electrical connection path will be described. In the torsion spring 11, at least one of the tip portions 11 a and 11 b is in contact with the protruding elastic body 9 regardless of the rotation state of the zoom lever 3. Furthermore, the protruding elastic body 9 is in contact with the plate 13 which is a metal member while being pressed (biased). Here, the width of the protruding elastic body 9 in the rotation direction of the zoom lever 3 is larger than that of the cylindrical elastic body 8. For this reason, the torsion spring 11 is in electrical contact with the protruding elastic body 9.

  FIG. 8 is a view of the zoom operation mechanism with the plate 13 attached as viewed from the bottom side of the digital camera 1, and FIG. 9 shows a cross section taken along the line AA in FIG. FIG. 9B is an enlarged view of the vicinity of the protruding elastic body 9 in the cross-sectional view shown in FIG.

  As shown in FIG. 9B, the protruding elastic body 9 is pushed by the plate 13 by L1. For this reason, the protruding elastic body 9 which is a conductive member is securely connected to the plate 13 electrically.

  Further, the plate 13 is screw-fixed to a chassis member which is a ground member inside the main body (not shown). As a result, the torsion spring 11 is electrically connected to the chassis member, which is a ground member, so that static electricity can be prevented from being transmitted to the internal microcomputer or the like.

  Next, the contact portion between the protruding elastic body 9 and the plate 13 will be described. As described above, the protruding elastic body 9 is pushed into the plate 13 only by L1, in order to prevent the protruding elastic body 9 and the plate 13 from coming into contact with each other due to variations in the dimensions of the processed parts. is there.

  In order to ensure the contact, L1 should be increased. However, as L1 is increased, the amount by which the protruding elastic body 9 is pushed in increases and the reaction force of the protruding elastic body 9 increases. As a result, the plate 13 floats due to the reaction force of the protruding elastic body 9, and contact failure between the flexible substrate 14 attached to the plate 13 and the brush 7 occurs.

  Similarly, when L1 is increased, the protruding elastic body 9 is deformed and bent as much as being pushed. A torsion spring 11 abuts on the protruding elastic body 9 to maintain the neutral position of the zoom lever 3 and to serve as a fulcrum during rotation. Therefore, the operability of the zoom lever 3 and the quality of the zoom lever 3 are maintained. In order to achieve this, it is necessary to minimize this deflection.

  Therefore, in this embodiment, a hollow region having a width of L2 is provided between the protrusion 4c provided on the exterior 4 and the protruding elastic body 9 covering the protrusion 4c. By providing this hollow region, the reaction force of the protruding elastic body 9 against the plate 13 due to being pushed in can be reduced, and further, the deflection of the protruding elastic body 9 can be reduced.

  Further, by making the tip of the protruding elastic body 9 convex, the pressed protruding elastic body 9 can be efficiently retracted to the hollow region, and the deflection of the protruding elastic body 9 can be further reduced. Can do.

  In the present embodiment, the width L2 of the hollow region is set to L1≈L2, but the relationship between L1 and L2 is necessary for variation in the dimensions of the processed parts, how to attach them, and conduction between the protruding elastic body 9 and the plate 13. What is necessary is just to set suitably by settings, such as contact pressure.

  In the present embodiment, the protrusion 4c provided on the exterior 4 is attached with the protruding elastic body 9 as the first protruding portion. However, if the protrusion 4c has elasticity, the protruding elastic body is described. The protrusion 4c to which 9 is not attached may be used as the first protrusion. In that case, it is desirable that the tip portion of the protrusion 4c has a convex shape and has a hollow region inside the convex shape.

  Hereinafter, an assembling method and a detailed shape of each component in the present embodiment will be described.

  First, the zoom operation mechanism will be described with reference to FIG. The members other than those around the zoom lever 3 are not shown. In the zoom operation mechanism of this embodiment, the exterior 4 is sandwiched between the zoom lever 3 to which the release button 2 is attached and the zoom holder 6 to which the brush 7 made of a conductive material is attached.

  The zoom lever 3 is provided with cylindrical mounting bosses 3a and 3b, each having a screw hole. The exterior 4 is provided with a circular hole 4a and an arcuate hole 4b through which the mounting bosses 3a and 3b of the zoom lever 3 pass, and a circular hole 6f is also provided at the center of the zoom holder 6. . A rotation shaft 3 c provided at the center of the zoom lever 3 is fitted and assembled to the hole 4 a of the exterior 4 and the hole 6 f of the zoom holder 6. Further, the zoom holder 6 and the zoom lever 3 are fixed by the screw 10.

  Since these are slidably attached with appropriate clearances, the zoom holder 6 and the zoom lever 3 can be integrally rotated with respect to the exterior 4. Furthermore, the protrusion 4c provided on the exterior 4 is attached so as to cover the protrusion-like elastic body 9 having substantially the same diameter as the protrusion 4c.

  Next, a detailed description of the parts attached to the zoom lever 3 and the zoom holder 6 will be given. FIG. 10 is a detailed view of the zoom operation mechanism, FIG. 10A is an exploded perspective view of the release button 2 and the zoom lever 3, and FIG. 10B is a diagram illustrating the zoom lever 3 from the bottom side of the digital camera 1. FIG. FIG. 10C is an exploded perspective view of the zoom holder 6.

  As shown in FIG. 10A, the release button 2 has a claw shape 2a and a shaft 2b, and the zoom lever 3 has a hole 3d in the center and a guide that has escaped the claw shape 2a of the release button 2. A groove 3e is formed. A spring 5 is attached between the release button 2 and the zoom lever 3, and the shaft 2b and the hole 3d are slidably fitted and attached. At this time, the claw shape 2a is hooked on the step 3f provided on the zoom lever 3 shown in FIG. With this configuration, the release button 2 can slide with respect to the zoom lever 3 in a state where the urging force of the spring 5 in the direction of the axis 2b is obtained.

  Next, the detailed description of the parts assembled to the zoom holder 6 will be given with reference to FIG. As described above, the brush 7 made of a conductive material is attached to the zoom holder 6. In the present embodiment, the zoom holder 6 is made of resin, provided with two protrusions 6d, and the corresponding two holes 7a provided in the brush 7 are fitted, and these are fixed by heat welding (thermal caulking). . These protrusions 6d and holes 7a also serve as positioning. With respect to this fixing, the method of the present embodiment is not limited. Other fixing methods may be used, for example, fixing with screws, or fixing with an adhesive or the like.

  Furthermore, the cylindrical shape 6a is provided, and the cylindrical elastic body 8 which consists of an elastic member is attached to this. The cylindrical shape 6a and the cylindrical elastic body 8 have substantially the same diameter, and the cylindrical shape 6a is provided with a protrusion 6b provided so as to protrude outward from its outer shape. After the attachment, the cylindrical elastic body 8 is pressed down by the projection 6b, so that it is prevented from falling off. Moreover, since the cylindrical elastic body 8 is an elastic member also at the time of incorporation, it can be attached by being deformed along the projection 6b. In the present embodiment, the cylindrical protrusion 6a provided on the zoom holder and the cylindrical elastic body 8 attached thereto will be described as the second projecting portion. However, if the cylindrical shape 6a has elasticity, the cylindrical shape 6a is cylindrical. The cylindrical shape 6a may be used as the second projecting portion without attaching the elastic body 8.

  Further, the zoom holder 6 is provided with a elongate shape 6 c to hold the torsion spring 11. Subsequently, after fixing the zoom lever 3 and the zoom holder 6, the torsion spring 11 is attached to the zoom holder 6. At this time, it attaches so that the cylindrical elastic body 8 and the protrusion-shaped elastic body 9 may be pinched | interposed with the front-end | tips 11a and 11b of the torsion spring 11. FIG. Further, the elastic body 12 is attached to the exterior 4.

  FIG. 11 is a view showing a method of holding the elastic body 12 by the exterior 4. The elastic body 12 is attached in a wall 4 e provided in the exterior 4. The wall 4e has a shape substantially along the outer shape of the elastic body 12. The protrusions 12 c provided on the elastic body 12 are prevented from coming off in a direction perpendicular to the direction of attachment to the exterior 4.

  Further, the plate 13 is screwed to the exterior 4. A flexible substrate 14 is attached to the surface of the plate 13 on the zoom lever 3 side. Further, the plate 13 is provided with a holding shape 13a, thereby preventing the elastic body 12 from coming off in the mounting direction.

  FIG. 12 shows a BB cross section in FIG. In FIG. 12, the elastic body 12 is restrained by a restraining shape 13 a provided on the plate 13 while maintaining a certain clearance. For this reason, the elastic body 12 can be freely deformed and compressed in the holding shape 13 a provided on the wall 4 e of the exterior 4 and the plate 13.

  With the above-described configuration, it is possible to reduce the operation sound that is generated when the operation member that is rotatable with respect to the device main body is operated. Moreover, it is possible to prevent static electricity that has entered the inside from the operation member from destroying the internal electrical components.

  In the present embodiment, the case where the present invention is applied to the zoom operation in the imaging apparatus has been described. However, the present embodiment may be applied to other functions. For example, in a playback mode in which one of a plurality of images recorded on a recording medium is displayed on a liquid crystal display device (not shown), when changing the speed of an image feed operation for changing the displayed image to the next image. You may apply.

  In addition, since it can also be applied to a function that can be executed by an electronic device other than the imaging device, such as the image feed operation described above, the change in the parameter of the function corresponding to the operation member according to the operation amount to the operation member The present invention can be applied to any electronic device whose amount is changed.

  In this embodiment, the load increase and the change amount are changed regardless of the rotation direction of the operation member. However, the load increase and the change amount are changed only when the operation member is rotated in one direction. Even if applicable.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment, A various deformation | transformation and change are possible within the range of the summary.

DESCRIPTION OF SYMBOLS 1 Digital camera 3 Zoom lever 4 Exterior 6 Zoom holder 8 Cylindrical elastic body 9 Protruding elastic body 11 Torsion spring 12 Elastic body 13 Plate

Claims (9)

An operation member rotatable with respect to the device body;
An elastic member having an opening in a direction substantially perpendicular to the rotation direction of the operation member;
Control means for controlling a function corresponding to the operation member based on an operation amount to the operation member;
The control means performs a first control when an operation amount to the operation member reaches a first operation amount, and an operation amount to the operation member reaches a second operation amount that is larger than the first operation amount. Then, the second control is performed,
The elastic member is disposed at a position where it comes into contact with the operation member when the operation member is operated with an operation amount greater than or equal to the third operation amount greater than the first operation amount and smaller than the second operation amount. Electronic device characterized by being made.   The shape of the opening of the elastic member changes according to an operation amount to the operation member when the operation member is operated with an operation amount larger than the third operation amount. The electronic device as described in.   The electronic apparatus according to claim 1, wherein the elastic member has the opening on a side that does not come into contact with the operation member with respect to a rotation direction of the operation member.   4. The electronic device according to claim 1, wherein the elastic member has a convex portion on a side in contact with the operation member. 5.   2. The elastic member according to claim 1, wherein a width of the opening in a rotation direction of the operation member is equal to or greater than a movement amount of the operation member from a contact with the elastic member to a rotation limit. 5. The electronic device according to any one of 4 above. A first protrusion that does not rotate as the operating member rotates;
A second protrusion that rotates as the operating member rotates;
There are two arm portions sandwiching the first projecting portion and the second projecting portion, and when the operation member rotates, the relative position between the first projecting portion and the second projecting portion is Biasing means for biasing at least one of the first protrusion and the second protrusion so as to be in an initial state;
6. The electronic apparatus according to claim 1, wherein the first protrusion and the second protrusion have elasticity.   The electronic apparatus according to claim 6, wherein the first protrusion has conductivity, and a width of the operation member in a rotation direction is larger than that of the second protrusion.   The electronic apparatus according to claim 6, further comprising a metal member that contacts the first protrusion and is fixed in a state where the first protrusion is biased.   The electronic device according to claim 8, wherein the first protrusion has a convex shape at a portion in contact with the metal member, and has a hollow region inside the convex shape.

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