JP2020136273A - Rotation operation device and electronic device using the same - Google Patents

Abstract

To give click feeling in a compact rotary operation device, and improve durability.SOLUTION: A rotation operation device includes a magnet 251 that includes a rotation operation member 200 that is rotatable around a predetermined rotation axis, and that has a plurality of magnetic poles alternately magnetized and that rotates around a predetermined axis as the rotation operation member rotates, and a moving member 280 having first and second magnetic pole portions 280a and 280b and arranged to be movable relative to the magnet. When the rotation operating member is rotated in a state in which the attraction force acts between the magnet and the first magnetic pole, the magnetic pole of the magnet and the first and second magnetic pole portions are arranged such that repulsive force acts between the first magnetic pole portion and the magnet, and attractive force acts between the second magnetic pole portion and the magnet to move the moving member relative to the magnet.SELECTED DRAWING: Figure 6

Description

The present invention relates to a rotation operation device and an electronic device using the rotation operation device, and more particularly to a rotation operation device that causes a click feeling during user operation.

Generally, an image pickup device such as a digital camera, which is one of electronic devices, is provided with a rotation operation member such as a dial. Then, by operating the rotation operation member, for example, shooting conditions are set and various functions are selected. A rotation operation device that causes a click feeling when the rotation operation member is rotated is known, and by generating the click feeling, the user can intuitively grasp the operation amount. ..

Conventionally, as a mechanism for imparting a click feeling, for example, a mechanism using an elastic member and a cam is known. However, when the mechanism is used, the click feeling may be deteriorated due to wear due to repeated use.

For this reason, for example, a click feeling is given by using the attractive force and the repulsive force between the ring-shaped rotating magnet and the fixed magnet, which are rotated integrally with the rotation operating member and magnetized in multiple poles along the circumferential direction. There is something that is done (Patent Document 1).

Japanese Unexamined Patent Publication No. 2008-192623

However, in the rotation operation device described in Patent Document 1, in the rotating magnet and the fixed magnet, a click feeling occurs when the magnetic poles overcome the repulsion from the attraction and become the attraction again. Therefore, in order to generate a single click feeling, it is necessary to rotate the rotating magnet by two poles. That is, a rotating magnet having a number of magnetic poles twice the number of clicks generated during one rotation of the operating member is required, and the rotating operating device itself becomes large.

Therefore, an object of the present invention is to provide a rotation operation device that gives a click feeling and is compact and has excellent durability, and an electronic device using the rotation operation device.

In order to achieve the above object, the rotation operation device according to the present invention is a rotation operation device including a rotation operation member that can rotate around a predetermined rotation axis, and a plurality of magnetic poles are alternately magnetized to perform the rotation operation. It has a magnet that rotates around the predetermined axis as the member rotates, and a moving member that has a first magnetic pole portion and a second magnetic pole portion and is arranged so as to be relatively movable with respect to the magnet. Then, the magnetic pole of the magnet, the first magnetic pole portion, and the second magnetic pole portion are rotated by the rotation operating member in a state where an attractive force acts between the magnet and the first magnetic pole portion. Then, a repulsive force acts between the first magnetic pole portion and the magnet, and an attractive force acts between the second magnetic pole portion and the magnet, so that the moving member acts on the magnet. It is characterized in that it is arranged in a relatively moving relationship.

According to the present invention, it is possible to impart a click feeling, to be compact, and to improve durability.

It is a perspective view which shows an example of the image pickup apparatus according to 1st Embodiment of this invention. It is a block diagram which shows the structure of the camera shown in FIG. It is the figure which looked at the dial shown in FIG. 1 and FIG. 2 from the front. It is a figure for demonstrating the structure of the dial shown in FIG. It is a perspective view for demonstrating the structure of the slider shown in FIG. It is sectional drawing along the line AA shown in FIG. It is a figure which shows the state which the attraction force acts on the 1st click magnet and magnet shown in FIG. It is a figure which shows the state which the slider shown in FIG. 6 is located in the center of a magnet (the 1). It is a figure which shows the state which the attraction force acts on the 2nd click magnet and magnet shown in FIG. It is a figure which shows the state which the slider shown in FIG. 6 is located at the center of a magnet (the 2). It is a figure which shows the dial used in the camera by the 2nd Embodiment of this invention from the front. It is the figure which looked at the dial used by the camera by the 3rd Embodiment of this invention from the front. It is a perspective view which shows disassembled the dial of FIG. 13 is a cross-sectional view taken along the line BB of FIG. 12 showing a state in which an attractive force acts between the first click magnet in FIG. 13 and the magnet. 13 is a cross-sectional view taken along the line BB of FIG. 12 showing a state in which the slider in FIG. 13 is located at the center of the magnet. FIG. 3 is a cross-sectional view taken along the line BB of FIG. 12 showing a state in which an attractive force acts between the second click magnet in FIG. 13 and the magnet. Similar to the third embodiment, it is a schematic view which shows the 1st modification which provided the fixed magnet in order to enhance the click feeling at the time of operating a dial part. Similar to the third embodiment, it is a schematic diagram showing a second modification in which a fixed magnet is provided in order to enhance the click feeling when the dial portion is operated.

An example of an electronic device according to an embodiment of the present invention will be described below with reference to the drawings. In the following description, an image pickup device, which is one of electronic devices, will be described as an example.

[First Embodiment]
FIG. 1 is a perspective view showing an example of an image pickup apparatus according to the first embodiment of the present invention. FIG. 1A is a perspective view seen from the front side, and FIG. 1B is a perspective view seen from the back side. In the illustrated example, the photographing lens unit is shown in a removed state.

The illustrated imaging device is, for example, a digital camera (camera), and a shutter button 108, a dial (the dial portion 200 is shown in FIG. 1), and a mode changeover switch 107 are arranged on the upper surface of the camera 100. ing. The shutter button 108 is an operation unit for giving a shooting instruction, and the mode changeover switch 107 is an operation unit for switching various shooting modes and the like.

The dial has a dial portion 200, and a part of the dial portion 200 is exposed from the upper surface (that is, the exterior) of the camera 100. The dial unit 200 is a rotation operation member that can rotate clockwise and counterclockwise, and by rotating the dial unit 200, various setting values such as a shutter speed and an aperture can be set or changed as described later. Can be done.

A power switch 106 is provided on the back surface of the camera 100. The power switch 106 is used when turning on or off the power of the camera 100. Further, a display device (display unit) 110, a sub dial 141, and a push button 142 are provided on the back surface of the camera 100. A TFT or an organic EL is used in the display device 110, and an image obtained by imaging a subject by various setting screens and shooting is displayed. The sub-dial 141 is a dial-shaped rotation operation member, and is used for operations such as selection of a shooting mode, selection of a AF point, image reproduction, and menu operation. The push button 142 is a button for pressing operation, and is mainly used for determining a selection item or the like.

The dial unit 200 and the sub dial 141 give a click feeling to the user according to the operation. Then, the user can intuitively grasp the operation amount according to the number of clicks obtained from these rotation operation members.

The camera 100 is provided with a communication terminal 109, and when a photographing lens unit (not shown) is attached to the camera 100, the CPU provided in the camera 100 communicates with the photographing lens unit via the communication terminal 109. By observing the focusing screen (not shown) through the eyepiece finder 111, the user can confirm the focus and composition of the optical image incident through the photographing lens unit.

FIG. 2 is a block diagram showing the configuration of the camera shown in FIG. In addition, the same reference number is given to the same component as the component shown in FIG. 1 in FIG.

The camera 100 is provided with a non-volatile memory (ROM) 101, and the non-volatile memory 101 stores a program that operates on the CPU 150. In the illustrated example, Flash-ROM is used as the non-volatile memory 101, but if it is a non-volatile memory, another memory may be used.

The RAM 102 is used as an image buffer for temporarily recording an image obtained by photographing. Further, the RAM 102 is also used when temporarily storing the image data obtained as a result of the image processing. The RAM 102 is also used as a working memory of the CPU 150. If the access speed is sufficient, a memory other than RAM may be used. The display unit 103 includes the display device 110 and the finder 111 described above.

The power supply unit 105 has a battery, an AC adapter, and the like, and supplies power to each part of the camera 100 directly or via a DC-DC converter (not shown) or the like.

The power switch 106 has, for example, mechanically on and off positions. The power switch 106 may be, for example, a push switch or an electric switch. When the power switch 106 is off, the camera 100 does not function even when the power supply unit 105 is inserted into the camera 100, and the power consumption is kept low. When the power switch 106 is turned on while the power supply unit 105 is inserted in the camera 100, the camera 100 functions as a camera.

The CPU 150 controls the camera in an integrated manner. Further, the CPU 150 changes various setting values such as the shutter speed and the aperture according to the operation of the dial 140 detected by the hall IC 241 described later, and further changes the display of the display unit 103.

The CPU 150 includes a timer 151 and a counter 152. At least one of the timer 151 and the counter 152 may be externally attached to the CPU 150.

The timer 151 starts timing in response to an instruction from the CPU 150 and ends timing in response to an instruction from the CPU 150. Further, the timer 151 may be continuously operated to periodically generate an interrupt in the CPU 150 at a predetermined time interval.

The counter 152 counts the number of operations of the dial 140. In addition to counting the number of operations of the dial 140, the counter 152 may count the number of operations of other operation units.

The Hall IC 241 is a magnetic sensor IC including a horizontal magnetic field detection unit 122 that detects a magnetic field in a specific direction and a vertical magnetic field detection unit 121 that detects a magnetic field in a direction perpendicular to the specific direction. In the illustrated example, the hall IC 241 is externally attached to the CPU 150, but it may be built in the CPU 150.

An upper limit threshold value and a lower limit threshold value are set for each of the transverse magnetic field detection unit 122 and the longitudinal magnetic field detection unit 121. When the magnetic flux density exceeds the upper limit threshold value or falls below the lower limit threshold value, the transverse magnetic field detection unit 122 and the longitudinal magnetic field detection unit 121 output a detection signal. In the following description, the transverse magnetic field detection unit 122 outputs a first lateral detection signal when the magnetic flux density exceeds the upper limit threshold value, and outputs a second lateral detection signal when the magnetic flux density falls below the lower limit threshold value. Is output. Further, the vertical magnetic field detection unit 121 outputs a first vertical detection signal when the magnetic flux density exceeds the upper limit threshold value, and outputs a second vertical detection signal when the magnetic flux density falls below the lower limit threshold value. ..

The PU 150 can read out the detection magnetic flux density detected by the transverse magnetic field detection unit 122 or the longitudinal magnetic field detection unit 121 at a predetermined timing. Further, in the above example, the hall IC 241 is used as the rotation detection unit, but another rotation detection element such as an MR sensor may be used.

The magnet 251 is a ring-shaped permanent magnet, and S poles and N poles are alternately magnetized in the direction of the central axis at a predetermined pitch along the circumference (outer circumference) of the magnet 251. The magnet 251 rotates integrally with the dial portion 200. Then, the Hall IC 241 detects the change in the magnetic flux density of the magnet 251 and the CPU 150 obtains the rotation direction and the rotation amount of the dial 140 according to the detection result. As will be described later, the dial 140 is configured by the dial portion 200, the magnet 251 and the like.

FIG. 3 is a front view of the dials shown in FIGS. 1 and 2. Further, FIG. 4 is a diagram for explaining the configuration of the dial shown in FIG. FIG. 4A is a perspective view showing the dial disassembled from the front, and FIG. 4B is a perspective view showing the dial disassembled from the back. Further, FIG. 5 is a perspective view for explaining the configuration of the slider shown in FIG.

The dial unit 200 is a rotation operation member operated by the user, and rotates about the rotation shaft 300. As described above, the magnet 251 has a ring shape, and a plurality of magnetic poles (S pole and N pole) are alternately magnetized at a predetermined pitch along the circumference thereof. The magnetizing direction of the magnet 251 is parallel to the rotation axis 300.

The magnet 251 has a first magnetizing surface (one surface) and a second magnetizing surface (other surface: back surface). Here, when the first magnetized surface is the north pole, the second magnetized surface is magnetized to the south pole, and when the first magnetized surface is the south pole, the second magnetized surface is the second pole. The magnetized surface is magnetized to the north pole. In the illustrated example, the magnet 251 is polarized to 12 poles, but may have other polarization numbers. Then, the magnet 251 is fixed inside the dial portion 200 and rotates integrally with the dial portion 200.

The shield member 203 is a magnetic material and is arranged between the dial portion 200 and the magnet 251. The shield member 203 prevents the magnetic force generated from the magnet 251 from leaking to the outside. Further, the shield member 203 prevents an external magnetic force acting as noise during magnetic detection by the hall IC 241.

The shield member 203 is fixed to the inside of the dial portion 200 like the magnet 251 and is further covered by the cover member 202 to rotate integrally with the dial portion 200. The operation unit cover 205 is fitted with the shaft portion 200a of the dial portion 200 to rotatably hold the dial portion 200 around the rotation shaft 300. The operation unit cover 205 is fixed to the base member 204, and the dial unit 200 is protected by the base member 204 and the operation unit cover 205.

The slider cover 206 fits with the shaft portion 200b located on the opposite side of the dial portion 200 from the shaft portion 200a in the sliding portion 206a, and holds the dial portion 200 rotatably around the rotation shaft 300. The sliding portion 206a provided on the slider cover 206 is made of a magnetic material, and the slider cover 206 is fixed to the base member 204.

As shown in FIG. 5, the slider (moving member: slide member) 280 is composed of a first click magnet (first magnetic pole portion) 280a, a second click magnet (second magnetic pole portion) 280b, and a magnetic material. It has a main body 280c. Then, a first click magnet 280a is arranged at one end of the main body 280c so that the north pole (first pole) faces the magnet 251. At the other end of the main body 280c, a second click magnet 280b is arranged so that the S pole (second pole) faces the magnet 251.

An elongated hole (hole) 280d extending in the sliding direction of the slider 280 is formed in the main body 280c, and the elongated hole 280d allows the slider 280 to move in the radial direction of the magnet 251. Then, the shaft portion 200b of the dial portion 200 is inserted (passed) into the elongated hole 280d.

The first click magnet 280a is inserted into the hole 204a formed in the base member 204, and the second click magnet 280b is inserted into the hole 204b formed in the base member 204. Then, the movements of the first click magnet 280a and the second click magnet 280b in the plane direction perpendicular to (intersect) with the rotation axis 300 of the slider 280 are regulated by the holes 204a and 204b. The slider 280 is arranged between the base member 204 and the slider cover 206, and the movement of the rotation shaft 300 in the direction is restricted.

With the above configuration, the slider 280 slides in a direction substantially parallel to the direction in which the user rotates the dial unit 200. That is, as will be described later, the slider 280 moves relative to the magnet 251.

On the dial 140, the slider 280 slides and repeatedly attracts and repels the magnet 251 to generate a click feeling. At this time, the magnetic poles of the magnets 251 close to the first click magnet 280a and the second click magnet 280b become magnetic poles facing each other with respect to the center of the magnet 251.

As a result, the inclination of the dial portion 200 and the slider 280 caused by the attractive force and the repulsive force acting between the magnet 251 and the slider 280 can be suppressed, and a stable click feeling can be obtained.

Further, since the elongated hole 280d is formed in the slider 280, the slider 280 is attracted and repelled against the opposing magnetic poles of the magnet 251 even when the dial portion 200 is held by both the shaft portions 200a and 200b. be able to.

The Hall IC 241 detects a magnetic field in a predetermined direction and a magnetic field in a direction perpendicular to the predetermined direction, that is, a magnetic field (magnetic force) in the biaxial direction. Then, the hall IC 241 faces the magnet 251 and is fixed to the base member 204. When the dial portion 200 is rotated, the Hall IC 241 detects a magnetic field in the direction parallel to the rotation axis 300 of the magnet 251 (longitudinal magnetic field) and a magnetic field in the circumferential direction of the magnet 251 (transverse magnetic field). Then, the CPU 150 obtains the rotation direction and the rotation amount of the dial unit 200 based on the detection result by the hall IC 241.

In the illustrated example, the hall IC 241 that detects the magnetic force in the biaxial direction is used, but it is not limited to the hall IC 241 as long as the rotation direction and the amount of rotation of the dial portion 200 can be detected. For example, two Hall elements may be arranged in different phases with respect to the magnet 251 to detect rotation.

The cover member 207 is arranged on the side of the dial portion 200 in the base member 204, and prevents dust, moisture, and the like from entering the inside of the camera 100 through the holes 204a and 204b formed in the base member 204.

FIG. 6 is a cross-sectional view taken along the line AA shown in FIG.

The dial portion 200 is rotatably held by the operation portion cover 205 and the slider cover 206. In FIG. 6, a state in which the slider 280 is moved to one side is shown, and the south pole of the second click magnet 280b and the north pole of the magnet 251 face each other, and an attractive force acts.

At this time, the arc portion of the elongated hole 280d formed in the slider 280 and the shaft portion 200b of the dial portion 200 are not in contact with each other. A shield member 203 is arranged on the side of the magnet 251 opposite to the slider 280 so that the magnetic field lines from the magnet 251 do not leak to the operation unit cover 205 side.

The shaft portions 200a and 200b are made of a magnetic material, and a part thereof is in contact with the shield member 203. The sliding portion 206a provided on the slider cover 206 is in contact with the shaft portion 200a and the main body 280c of the slider 280. The magnetic field lines from the magnet 251 pass through the second click magnet 280b and the main body 280c, reach the shaft portion 200a of the dial portion 200 and the shield member 203, and return to the magnet 251.

In the state where the slider 280 is moved in the direction opposite to the state shown in FIG. 6, the north pole of the first click magnet 280a and the south pole of the magnet 251 face each other. Therefore, a magnetic circuit closed by the magnet 251 and the slider 280, the dial portion 200, and the shield member 203 is similarly configured.

By constructing the closed magnetic circuit in this way, even a magnet having a weak magnetic force can generate a stronger click feeling. As a result, the dial 140 can be miniaturized even if the click feeling is the same.

Here, the click feeling generated when the user rotates the dial unit 200 will be described.

FIG. 7 is a diagram showing a state in which an attractive force acts on the first click magnet shown in FIG. 6 and the magnet. Further, FIG. 8 is a diagram showing a state in which the slider shown in FIG. 6 is located at the center of the magnet. Further, FIG. 9 is a diagram showing a state in which an attractive force acts on the second click magnet shown in FIG. 6 and the magnet. 10 is a diagram showing a state in which the slider shown in FIG. 6 is located at the center of the magnet.

Note that in FIGS. 7 to 10, only the magnet 251 and the slider 280 and the hall IC 241 are shown for convenience of explanation. The hatched portion is the north pole. Further, although the magnetic pole is shown on the surface of the slider 280 on the front side of the paper surface, the invisible surface of the slider 280 (the surface on the opposite side of the paper surface direction) is actually magnetized by the illustrated magnetic pole.

In FIG. 7, the S pole of the second click magnet 280b is separated from the magnet 251 and the state shown in FIG. 7 is a mechanically stable state. The slider 280 is not in a state of mechanically abutting in the direction of D2.

When the dial portion 200 is rotated clockwise (CW) from the state shown in FIG. 7, the N pole of the magnet 251 approaches the N pole of the first click magnet 280a and a repulsive force acts. As a result, the slider 280 starts sliding in the direction of D1 (diameter direction). Further, when the dial portion 200 is rotated clockwise, the state shown in FIG. 8 is obtained by rotating the magnet 251 clockwise by 15 degrees from the state shown in FIG. 7.

In FIG. 8, the attractive force and the repulsive force acting in the D1 (D2) direction are balanced with respect to the first click magnet 280a and the second click magnet 280b. However, in a mechanically unstable state, if the phase of the dial portion 200 shifts even a little from the state shown in FIG. 8, a force for transitioning to the state shown in FIG. 7 or 9 acts.

For example, when the dial portion 200 is rotated clockwise from the state shown in FIG. 8, the N pole of the magnet 251 is further brought closer to the N pole of the first click magnet 280a, so that the repulsive force is strengthened. Further, since the north pole of the magnet 251 approaches the south pole of the second click magnet 280b, an attractive force is generated and the slider 280 slides in the direction of D1.

Even when the dial portion 200 is rotated counterclockwise (CCW), the slider 280 slides in the direction of D2 in the same manner.

When the dial unit 200 is further operated clockwise from the state shown in FIG. 8, the state shown in FIG. 9 is obtained by rotating the magnet 251 clockwise by 30 degrees from the state shown in FIG.

In FIG. 9, the S pole of the second click magnet 280b and the N pole of the magnet 251 face each other and attractive forces act on each other. At this time, the north pole of the first click magnet 280a is separated from the magnet 251. The state shown in FIG. 9 is a mechanically stable state, and the slider 280 does not mechanically abut in the direction of D1.

From the state shown in FIG. 7 to the state shown in FIG. 8 through the state shown in FIG. 8, the magnet 251 rotates by one pole of the magnetic pole (30 degrees), and the user who rotates the dial portion 200 during this period is 1. You can get a click feeling for each click. That is, when the dial portion 200 is rotated once, a click feeling of 12 times, which is the number of magnetic poles of the magnet 251 can be obtained.

When the dial unit 200 is operated clockwise from the state shown in FIG. 9, the S pole of the magnet 251 approaches the S pole of the second click magnet 280b and a repulsive force acts on the slider 280 in the direction of D2. Start the slide. Further, when the dial portion 200 is rotated clockwise, the state shown in FIG. 10 is obtained by rotating the magnet 251 clockwise by 45 degrees from the state shown in FIG. 7.

In FIG. 10, the slider 280 is located at the center of the magnet 251 and the attractive force and the repulsive force acting in the direction of D1 (D22) with respect to the first click magnet 280a and the second click magnet 280b are balanced. The state shown in FIG. 10 is mechanically unstable like the state shown in FIG.

When the dial unit 200 is further operated clockwise from the state shown in FIG. 10, the S pole of the magnet 251 is further brought closer to the S pole of the second click magnet 280b, so that the repulsive force is strengthened. Further, the south pole of the magnet 251 approaches the north pole of the first click magnet 280a to generate an attractive force, and the slider 280 slides in the direction of D2. Further, when the dial unit 200 is rotated clockwise, the magnet 251 rotates 60 degrees clockwise from the state shown in FIG. 7 to return to the same state as shown in FIG. 7.

When the dial unit 200 is rotated clockwise by the user, the movements described with reference to FIGS. 7 to 10 are repeated to give the user a click feeling. Further, when the dial unit 200 is rotated counterclockwise, the states change in the order shown in FIGS. 10 to 7, and a click feeling is similarly given to the user.

In the illustrated example, the Hall IC 241 is arranged at a position 90 degrees away from the magnet 251 that attracts and repels the slider 280 when it slides. With such an arrangement, the influence of the change in the magnetic field by the slider 280 when the dial portion 200 is operated can be minimized.

As shown in FIG. 7, the width W (width in the direction intersecting the moving direction of the slider 280) of the first click magnet 280a and the second click magnet 280b is substantially the same as the width of one magnetic pole of the magnet 251. is there. As a result, when the dial unit 200 is rotated, play can be reduced and a click feeling can be given to the user. When the width W is narrower than the width of one magnetic pole of the magnet 251, it takes time from the start of the rotation operation of the dial portion 200 until the repulsive force acts on the magnet 251 and the slider 280, and the click feeling is rattling. Becomes larger.

As described above, in the first embodiment of the present invention, it is possible to impart a click feeling, to be compact, and to improve durability.

[Second Embodiment]
Subsequently, the dial used in the camera according to the second embodiment of the present invention will be described. The configuration of the camera according to the second embodiment is the same as that of the camera described in the first embodiment.

FIG. 11 is a front view showing the dial used in the camera according to the second embodiment of the present invention. In FIG. 11, for convenience of explanation, the cover member 202, the base member 204, the slider cover 206, and the cover member 207 are omitted.

In FIG. 11, the sliding direction of the slider 280 is a direction rotated by 90 degrees around the rotation axis 300. Along with this, the hall IC 241 is also arranged at a position rotated by 90 degrees around the rotation shaft 300.

In the dial 140, as shown in FIG. 1, the user touches only a part of the dial portion 200 with a finger to perform a rotation operation. That is, the location and direction that can be operated by the user are limited to the direction of D3 shown in FIG.

As shown in FIG. 11, since the rotation operation direction D3 of the user and the slide direction D4 of the slider 280 are orthogonal to each other, the click feeling generated by the movement of the slider 280 is more easily perceived by the user.

As described above, also in the second embodiment of the present invention, it is possible to impart a click feeling, to be compact, and to improve durability.

[Third Embodiment]
Subsequently, the dial used in the camera according to the third embodiment of the present invention will be described. A third embodiment is a camera that implements the present invention for the sub dial 141. The configuration other than the sub dial 141 is the same as that of the camera described in the first embodiment.

FIG. 12 is a front view of the dial used in the camera according to the third embodiment of the present invention. The sub dial 141 is a dial operated by touching the dial portion 200 from the vertical direction on the paper surface of FIG.

Further, FIG. 13 is a perspective view showing the dial of FIG. 12 in an exploded manner.

In FIG. 13, the dial portion 200 is a rotating member operated by the user, and rotates about the rotating shaft 300. The magnet 251 has a ring shape, and a plurality of magnetic poles (S pole and N pole) are alternately magnetized at a predetermined pitch along the circumference thereof. The magnetizing direction of the magnet 251 is parallel to the rotation axis 300. In the illustrated example, the magnet 251 is polarized to 20 poles. The rotating magnet holding member 201 is a holding member to which the magnet 251 is fixed.

The shield member 203 is a magnetic material and is arranged between the rotating magnet holding member 201 and the magnet 251. The magnet 251 is fixed to the rotating magnet holding member 201 via the shield member 203. The shield member 203 prevents the magnetic force generated from the magnet 251 from leaking to the outside.

The dial holding member 211 is a holding member that rotatably holds the dial portion 200 around the rotation shaft 300. The rotating magnet holding member 201 is fixed to the dial portion 200 so as to sandwich the sealing member 208 and the dial holding member 211. That is, the dial portion 200, the rotating magnet holding member 201, the shield member 203, and the magnet 251 are configured to rotate integrally. The dial holding member 211 is fixed to the base 210.

The slider 280 holds click magnets 281a and 281b at both ends thereof, respectively. The slider 280 is slidably held in one direction in a plane perpendicular to the rotation axis 300 by the guide members 283 (a, b) and the guide portions 210 (a, b) of the base 210. The balls 282a and 282b are arranged between the slider 280 and the guide members 283 (a, b) (guide portions 210 (a, b)), respectively, to reduce the sliding friction of the slider 280. When the dial portion 200 is operated, the slider 280 slides due to the attractive force and the repulsive force between the magnet 251 and the click magnets 281a and 281b of the slider 280, and a click feeling is generated.

The fixed magnet holding member 290 is fixed to the base 210 and holds two fixed magnets 291a and 291b. The fixed magnets 291a and 291b are arranged at positions facing the click magnet 281 that is not attracted to the magnet 251 with the slider 280 approaching in one direction, respectively.

FIG. 14 is a cross-sectional view taken along the line BB of FIG. 12 showing a state in which an attractive force acts between the first click magnet 281a and the magnet 251 in FIG.

FIG. 14 shows a state in which the slider 280 is closer to one side, and the south pole of the click magnet 281a arranged at one end of the slider 280 and the north pole of the magnet 251 face each other, and an attractive force acts. are doing. Further, the north pole of the click magnet 281b arranged at the end opposite to the click magnet 281a faces the south pole of the fixed magnet 291b held by the fixed magnet holding member 290, and an attractive force acts. Since the attractive force acts on both the click magnet 281a and the click magnet 281b due to the presence of the fixed magnet 291, the rotation direction of the slider 280 around the vertical axis of the paper surface as shown in FIG. 14 as compared with the case without the fixed magnet 291. The inclination of the magnet can be reduced. As a result, the behavior of the slider 280 when the dial portion 200 is rotated is stabilized, and a more stable click feeling can be provided to the user.

Here, the click feeling generated when the user rotates the dial unit 200 will be described.

When the dial portion 200 is rotated clockwise (CW) from the state shown in FIG. 14, the S pole next to the N pole of the magnet 251 facing the click magnet 281a approaches the click magnet 281a in FIG. Repulsive force acts. As a result, the slider 280 starts sliding in the direction of D1 (diameter direction).

As shown in FIG. 14, the center of the magnetic pole of the magnet 251 and the center of the click magnet 281a are deviated from each other by the attractive force acting between the click magnet 281b and the fixed magnet 291b. As a result, it is possible to prevent the slider 280 from accidentally sliding in the opposite direction to D1 when the dial portion 200 is rotated and a repulsive force acts between the magnet 251 and the click magnet 281a.

The attractive force acting between the click magnet 281b and the fixed magnet 291b acts in a direction that hinders the movement of the slider 280 in the D1 direction. As a result, a larger torque is required to rotate the dial portion 200 as compared with the case where the fixed magnet 291b is not provided. That is, by providing the fixed magnet 291b, it is possible to enhance the click feeling obtained by the user when the dial portion 200 is rotated.

Since the slider 280 is slid by the repulsive force of the magnet 251 and the click magnet 281a, the slider 280 is correct when the attractive force of the fixed magnet 291b and the click magnet 281b is larger than the repulsive force acting between the magnet 251 and the click magnet 281a. Does not drive. That is, the type, size, and distance between the fixed magnet 291b and the click magnet 281b are determined so that the attractive force between the fixed magnet 291b and the click magnet 281b is smaller than the repulsive force acting between the magnet 251 and the click magnet 281a. There is a need. In this embodiment, a magnetic material may be used instead of the fixed magnet 291.

Then, when the dial unit 200 is further rotated clockwise, the state shown in FIG. 15 is obtained.

FIG. 15 is a cross-sectional view taken along the line BB of FIG. 12 showing a state in which the slider 280 in FIG. 13 is located at the center of the magnet 251.

In FIG. 15, the attractive force and the repulsive force acting between the magnet 251 and the click magnet 281a and the fixed magnet 291b and the click magnet 281b are balanced in the D1 direction. That is, the forces acting on the slider 280 in the D1 direction are balanced. However, in a mechanically unstable state, if the phase of the dial portion 200 shifts even a little from the state shown in FIG. 15, a force for transitioning to the state shown in FIG. 14 or FIG. 16 described later acts.

When the dial unit 200 is further operated clockwise from the state shown in FIG. 15, the state shown in FIG. 16 is obtained by rotating the magnet 251 clockwise 18 degrees from the state shown in FIG.

FIG. 16 is a cross-sectional view taken along the line BB of FIG. 12 showing a state in which an attractive force acts between the second click magnet 281b and the magnet 251 in FIG.

In FIG. 16, the north pole of the click magnet 281b of the slider 280 and the south pole of the magnet 251 face each other, and an attractive force acts on them. Further, the south pole of the click magnet 281a faces the north pole of the fixed magnet 291a, and an attractive force acts on it.

The attractive force acting between the click magnet 281a and the fixed magnet 291a can prevent the slider 280 from sliding further in the D1 direction than in the state shown in FIG. As a result, it is possible to prevent the slider 280 from accidentally sliding in the D1 direction when the dial portion 200 is further rotated from the state shown in FIG.

Due to the series of movements of FIGS. 14 to 16, attractive force and repulsive force are generated in the magnet 251 and the click magnet 281 (a, b) and the fixed magnet 291 (a, b), and the user obtains a click feeling. Since the magnet 251 rotates by one pole of the magnetic pole (18 degrees) from the state shown in FIG. 14 to the state shown in FIG. 15 through the state shown in FIG. 15, when the dial portion 200 is rotated once, the magnet 251 is rotated. It is possible to obtain a click feeling of 20 times, which is the number of magnetic poles.

Next, a modified example of the third embodiment will be described.

(First modification)
FIG. 17 is a schematic view showing a first modified example in which fixed magnets 291 (a, b) are provided in order to enhance the click feeling when the dial portion 200 is operated, as in the third embodiment. Note that FIG. 17 shows only the magnet 251 and the slider 280, the click magnet 281 and the fixed magnet 291 for convenience of explanation.

In FIG. 17, a cross-sectional view taken along the line CC shown in FIG. 17 (a) is shown in FIG. 17 (b). The north pole of the magnet 251 and the south pole of the click magnet 281b face each other, and an attractive force acts on them. Further, the south pole of the fixed magnet 291a and the north pole of the click magnet 281a face each other, and an attractive force acts. In the third embodiment, the fixed magnet 291 is provided inside the magnet 251 but in the first modification, it is provided outside the magnet 251 as shown in FIG.

According to the first modification, since the fixed magnets 291 (a, b) are provided on the outside of the magnet 251 in addition to the effect of the third embodiment, the thickness in the rotation axis (rotation axis 300 in FIG. 13) direction. Can be suppressed. Further, according to the first modification, the degree of freedom in design can be improved in the configuration in which the push button 142 is provided at the center of the dial as in the sub dial 141 described above.

In the first modification, a magnetic material can also be used as the fixed magnet 291 as in the third embodiment.

Next, a second modification of the third embodiment will be described.

(Second modification)
FIG. 18 is a schematic view showing a second modified example in which the fixed magnet 291 is provided in order to enhance the click feeling when the dial portion 200 is operated, as in the third embodiment. Note that FIG. 18 shows only the magnet 251 and the slider 280, the click magnet 281 and the fixed magnet 291 for convenience of explanation.

In FIG. 18, a cross-sectional view taken along the line DD shown in FIG. 18 (a) is shown in FIG. 18 (b). The north pole of the magnet 251 and the south pole of the click magnet 281a face each other, and an attractive force acts on them. In FIG. 18B, the fixed magnets 291 (a, b) are arranged on the opposite side of the slider 280 from the magnet 251 so that the north pole of the click magnet 281a and the south pole of the fixed magnet 291a face each other. The suction force is working.

According to the second modification, the fixed magnet 291 can be provided even in the configuration in which the dial portion 200 is held from both sides of the shaft portion 200a and the shaft portion 200b as in the first embodiment. Further, the configuration shown in FIG. 18 can be implemented in combination with the third embodiment, and the click feeling obtained by the user when the dial unit 200 is rotated can be further improved.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and modifications can be made within the scope of the gist thereof. For example, in the first and second embodiments, a mechanical abutting portion is not provided in the sliding direction of the slider 280 for noise reduction. On the other hand, in the static state (states shown in FIGS. 7 and 9), the elastic member may be arranged at a position where it abuts on the first click magnet 280a and the second click magnet 280b.

With such a configuration, it is possible to prevent the slider 280 from going too far. Further, the clearance between the elongated hole 280d of the slider 280 and the shaft portion 200b of the dial portion 200 can be reduced to further reduce the size of the dial 140.

Further, the positional relationship between the magnet 251 and the direction of the rotation shaft 300 may be adjustable. This makes it possible to adjust the strength of the click feeling generated by the slider 280.

140 dial (rotation operation device)
141 Sub dial 200 Dial part (rotation operation member)
202 Cover member 203 Shield member 204 Base member 205 Operation unit cover 206 Slider cover 241 Hall IC
251 Magnet 280 Slider 281 (a, b) Click magnet 290 Fixed magnet holding member 291 (a, b) Fixed magnet

Claims (13)

A rotation operating device including a rotation operating member that can rotate around a predetermined rotation axis.
A magnet in which a plurality of magnetic poles are alternately magnetized and rotates around the predetermined axis as the rotation operating member rotates.
It has a moving member having a first magnetic pole portion and a second magnetic pole portion and arranged so as to be movable relative to the magnet.
The rotation operation member is rotationally operated between the magnetic pole of the magnet, the first magnetic pole portion, and the second magnetic pole portion in a state where an attractive force acts between the magnet and the first magnetic pole portion. A repulsive force acts between the first magnetic pole portion and the magnet, and an attractive force acts between the second magnetic pole portion and the magnet so that the moving member is relative to the magnet. A rotation operating device characterized in that it is arranged in a relationship of moving in a targeted manner. It has a fixed magnet holding member that holds the first magnetic material and the second magnetic material, and has
In a state where an attractive force acts between the magnet and the first magnetic pole portion, an attractive force acts between the second magnetic material and the second magnetic pole portion.
The claim is characterized in that, in a state where an attractive force acts between the magnet and the second magnetic pole portion, an attractive force acts between the first magnetic material and the first magnetic pole portion. The rotation operation device according to 1. It has a fixed magnet holding member that holds the first magnetic material and the second magnetic material, and has
In a state where an attractive force acts between the magnet and the first magnetic pole portion, an attractive force acts between the first magnetic material and the first magnetic pole portion.
The claim is characterized in that, in a state where an attractive force acts between the magnet and the second magnetic pole portion, an attractive force acts between the second magnetic material and the second magnetic pole portion. The rotation operation device according to 1. The rotation operation device according to any one of claims 1 to 3, wherein the moving member moves relative to the magnet in a direction intersecting the rotation axis. The moving member includes a slide member, the first magnetic pole portion is arranged at one end of the slide member, and the second magnetic pole portion is arranged at the other end of the slide member. 4. The rotation operating device according to 4 . The magnet is a ring-shaped magnet.
The rotation operation device according to claim 5 , wherein the moving member is arranged in the radial direction of the ring-shaped magnet. The slide member is formed with a hole extending in the radial direction.
The rotation operation device according to claim 6 , wherein the rotation shaft passes through the hole portion. The rotation operation device according to any one of claims 1 to 7 , wherein the rotation shaft is a magnetic material. Claim 1 is characterized in that the widths of the first magnetic pole portion and the second magnetic pole portion in a direction intersecting the moving direction of the moving member are substantially the same as the width of one magnetic pole of the magnet. 8. The rotation operating device according to any one of 8 . The rotation operation device according to any one of claims 1 to 9 , further comprising a rotation detection unit that detects the rotation of the magnet. The rotation operating device according to claim 10 ,
A control means that performs a predetermined process according to the rotation of the magnet detected by the rotation detection unit, and
An electronic device characterized by having. The electronic device according to claim 11 , wherein at least a part of the rotation operating member is exposed from the exterior of the electronic device. The electronic device is an imaging device that captures an image of a subject and obtains an image.
The electronic device according to claim 11 or 12 , wherein the rotation operating device is used at least when setting imaging conditions in the imaging device.

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