JP5665496B2 - Electronics - Google Patents

Description

  The present invention relates to an electronic apparatus having an operation member that is movably provided with respect to an apparatus main body.

  2. Description of the Related Art Conventionally, electronic devices capable of shooting moving images such as digital cameras, digital video cameras, and mobile phones are widely known. Among these electronic devices, there are devices that can simultaneously record sound when shooting a moving image, that is, can record a moving image with sound. When shooting moving images with sound, various settings such as zoom magnification and aperture may be performed by operating various switches. At that time, there is a problem that the operation sound of the switch is recorded in a moving image with sound. In order to solve such a problem, there is a demand for quietness of an operation switch having a zoom magnification that is frequently operated particularly during recording of a moving image with sound.

  Therefore, for example, in Patent Document 1, a rotatable zoom operation member is returned to a neutral position by magnetic force, and a cushion portion is provided at a portion of the zoom operation member that collides with a stopper that restricts movement of the zoom operation member. A switch operating device is proposed.

JP 2005-183081 A

  However, since the switch operating device proposed in Patent Document 1 uses a contact-type switch as an operation detection means, a sound is generated when an operation member comes into contact with the switch, and the operation is quieter. It was insufficient in terms.

  In view of the above, an object of the present invention is to reduce a sound generated when an operation member provided to be movable with respect to a device main body is operated.

In order to achieve the above object, an electronic device according to the present invention includes an operation member provided to be rotatable with respect to a device main body, a first magnet that moves in accordance with the movement of the operation member, and the first A magnetic field detecting means for detecting a magnetic field in a plurality of directions disposed in the vicinity of the movement trajectory of the first magnet; a second magnet disposed on the movement trajectory of the first magnet or an extension of the movement trajectory; The first magnet and the second magnet are arranged so that the magnetic poles at the ends facing each other are substantially the same on a substantially same circle centered on a point that is the rotation center of the operation member , wherein the direction of the magnetic field detected by the magnetic field detection means with the movement of the operating member varies.

  ADVANTAGE OF THE INVENTION According to this invention, the sound which arises when operating the operation member provided with respect to the apparatus main body so that a movement is possible can be reduced.

1 is an external view of a digital camera according to an embodiment of the present invention. The figure which shows the zoom operation part concerning the 1st Embodiment of this invention. The figure which shows the state transition by operation to the zoom operation part concerning the 1st Embodiment of this invention. The figure which shows the state transition by operation to the zoom operation part concerning the 2nd Embodiment of this invention. The figure which shows the shape of the magnet 124 concerning the 3rd Embodiment of this invention. The figure which shows the modification of the magnet 123 concerning the 2nd Embodiment of this invention. The figure which shows the modification of the magnet 123 concerning the 2nd Embodiment of this invention.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

(First embodiment)
1A and 1B are external views of a digital camera 101 as an electronic apparatus according to a first embodiment of the present invention. FIG. 1A is a front perspective view, and FIG. 1B is a rear perspective view.

  The digital camera 101 has a release button 102 for instructing an imaging operation, a zoom magnification operation unit 103, and a mode dial 104 for setting various modes. In addition, an imaging lens 105 is provided on the front surface, an accessory cover 109 is provided on the bottom surface to cover a battery or a memory storage portion, and a terminal cover 110 is provided on a side surface to cover terminals communicating with external devices. In addition, an operation button 106 for performing various operations, an optical viewfinder 107, and a display 108 for displaying various information such as captured images are provided on the back.

  The photographic lens 105 is a so-called zoom lens, and is composed of a plurality of lenses. The focal length, that is, the zoom magnification can be changed by moving the lens position. The zoom performed by the zoom lens is generally called an optical zoom. On the other hand, the digital camera 101 also has an electronic zoom function. This electronic zoom changes the zoom magnification by enlarging and displaying a part of the image signal from the imaging device.

  The zoom magnification operation unit 103 can change the magnification of the optical zoom or the electronic zoom described above by performing a rotation operation.

  Next, the configuration of the zoom magnification operation unit 103 will be described with reference to FIG. 2A is a diagram of the zoom magnification operation unit 103 viewed from an oblique upper surface, FIG. 2B is a diagram of a part of the zoom magnification operation unit 103 viewed from an oblique lower surface, and FIG. It is the figure which showed a part of zoom magnification operation part 103 of the state of a).

  As shown in FIG. 2, in this embodiment, the zoom magnification operation unit 103 and the release button 102 are integrated. The rotating part 111 is supported by a member (not shown) so as to be rotatable with respect to the apparatus main body, and is held in a neutral position when no force is applied by the user by a method described later. When the user applies a force to rotate the rotating unit 111 in the direction a in the figure, the zooming is performed in the telephoto direction, and when the user rotates in the direction b in the figure, the zooming in the wide angle direction is performed. Do. A method for detecting the rotation of the rotation unit 111 will be described later.

  The rotating part 111 is provided with a protrusion 112 for hooking a finger so that the user can easily operate it. A magnet 113 (first magnet) is fixed to the bottom surface of the rotating unit 111, and the magnet 113 rotates as the rotating unit 111 rotates.

  A flexible printed circuit board 114 is placed on a pedestal (not shown) facing the bottom surface of the rotating unit 111, and a release switch 115 and a magnetic field detection sensor 116 for detecting the direction of the magnetic field are mounted on the flexible printed circuit board 114. ing. Although other components may be mounted on the flexible printed circuit board 114, description thereof is omitted in this embodiment.

  A magnet 117 and a magnet 118 (second magnet) are fixed to a base (not shown). The flexible printed circuit board 114 is provided with a hole 119 and a hole 120 so that the magnet 117 and the magnet 118 can pass therethrough. In addition, when the release button 102 is pressed, the pressed portion 122 of the release switch 115 is pressed by the protrusion 121 provided on the lower surface, and a process of shooting a still image or a moving image is started under the control of a CPU (not shown). Alternatively, processing such as cancellation is executed. As will be described later, the CPU performs zoom control associated with the direction of the magnetic field detected by the magnetic field detection sensor 116.

  Next, the state transition by the operation to the zoom magnification operation unit 103 will be described with reference to FIG. FIG. 3A is a top view in which the release button 102 and the rotation unit 111 are omitted from the zoom magnification operation unit 103 in the neutral position.

  A point c is the rotation center of the rotation unit 111. The magnet 113, the magnet 117, and the magnet 118 are arranged on substantially the same circle with the point c as the center. That is, the magnet 117 and the magnet 118 are arranged so as to sandwich the magnet 113 on the movement locus of the magnet 113 or on an extension line of the movement locus. Further, the magnet 113, the magnet 117, and the magnet 118 are respectively magnetized as shown in FIG. 3, in which N represents the N pole and S represents the S pole. Since the magnet 113 and the magnet 117 and the magnet 113 and the magnet 118 are arranged so that the magnetic poles at the ends facing each other are the same, they repel each other. Arrows d and e in the figure represent the repulsive force between the magnets. When no force in the rotation direction other than the repulsive force by the magnet is applied to the zoom magnification operation unit 103, the zoom magnification operation unit 103 is stationary without rotating at a position where the repulsive force by the magnet is balanced. Therefore, the positions of the magnet 117 and the magnet 118 and the magnetic force of the magnet 113, the magnet 117, and the magnet 118 are set so that the repulsive force d and the repulsive force e are balanced when the zoom magnification operation unit 103 is at a desired position. In the present embodiment, the repulsive force d and the repulsive force e hold the rotating portion 111 at a neutral position within a movable range.

  The magnetic field detection sensor 116 can detect the direction of the magnetic field in the four directions of the upper, lower, left, and right sides in FIG. An arrow f is a part of a line of magnetic force generated by the magnet 113. In the neutral position, the magnetic field detection sensor 116 detects a magnetic field in the right direction as shown in FIG. The magnetic field detection sensor 116 is disposed in the vicinity of the movement locus of the magnet 113.

  A force is applied to the zoom magnification operation unit 103 to rotate the rotation unit 111 in the direction b in FIG. 1 (counterclockwise in FIG. 3), so that the rotation unit 111 and the magnet 113 reach a predetermined rotation angle. Then, as shown in FIG. 3B, the magnetic field detection sensor 116 detects the upward magnetic field in FIG. When the magnetic field detection sensor 116 detects an upward magnetic field, the CPU controls to perform zooming in the wide angle direction.

  Then, the zooming is performed in the wide-angle direction until the operation on the rotating unit 111 is finished, the magnetic field detection sensor 116 detects the right magnetic field again after returning to the neutral position by the repulsive force between the magnets.

  On the other hand, a force is applied to the zoom magnification operation unit 103 to rotate the rotation unit 111 in the direction a in FIG. 1 (clockwise in FIG. 3), so that the rotation unit 111 and the magnet 113 have a predetermined rotation angle. 3, the magnetic field detection sensor 116 detects a downward magnetic field in FIG. 3 as shown in FIG. When the magnetic field detection sensor 116 detects a downward magnetic field, the CPU controls to perform zooming in the telephoto direction.

  Then, the zooming is performed in the telephoto direction until the operation on the rotating unit 111 is completed, the magnetic field detection sensor 116 detects the right magnetic field again after returning to the neutral position by the repulsive force between the magnets.

  When the rotating unit 111 is rotated in the direction of a in FIG. 1, the magnet 113 comes into contact with the magnet 118 and no longer rotates in the direction of a. Further, when the rotating unit 111 is rotated in the direction of b in FIG. 1, the magnet 113 comes into contact with the magnet 117 and no longer rotates in the direction of b. That is, the movable range (rotation range) of the rotation unit 111 is limited by the magnet 117 and the magnet 118.

  As described above, the CPU detects the direction of the magnetic field of the magnet 113 fixed to the rotating unit 111 in order to return the rotating unit 111 to the neutral position, so that the CPU is based on the detection result. Thus, the rotation direction of the rotation unit 111 can be determined. Therefore, based on the direction of the magnetic field detected by the magnetic field detection sensor 116, it is possible to perform a zooming operation according to the operation on the rotating unit 111.

  Further, since the rotation direction of the rotation unit 111 can be detected in a non-contact manner by the magnetic field detection sensor 116 that detects the direction of the magnetic field, it is possible to reduce an operation sound generated when the rotation unit 111 is rotated. it can.

  Further, since the repulsive force of the magnet increases as it approaches, the magnet 113 is decelerated by the repulsive force of the magnet 113 when the rotating portion 111 is rotated and the magnet 113 contacts the magnet 117 or 118. For this reason, it is possible to reduce the contact sound generated when the rotation unit 111 is rotated to the end of the rotation range.

(Second Embodiment)
Hereinafter, a second embodiment of the present invention will be described with reference to the accompanying drawings. In the present embodiment, the same members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  This embodiment is different from the first embodiment in that the speed for changing the zoom magnification of the digital camera 101 can be selected from a plurality of speeds. The digital camera 101 of the present embodiment has a configuration in which three speeds can be selected as the zoom speed on the wide-angle side and the telephoto side, respectively, and the zoom magnification operation unit 103 changes the zoom magnification while appropriately selecting the zoom speed. be able to.

  In the present embodiment, since a plurality of zoom speeds can be selected, the magnet 123 is fixed to the rotating unit 111 instead of the magnet 113 in the first embodiment. Further, the positions of the magnet 117 and the magnet 118 are different from those of the first embodiment, and the positions of the hole 119 and the hole 120 provided in the flexible printed circuit board 114 are accordingly different. Furthermore, the position of the magnetic field detection sensor 116 is also arranged at an optimal position so that the magnetic field to be detected changes as the magnet 123 rotates.

  Next, the state transition by the operation to the zoom magnification operation unit 103 will be described with reference to FIG. The zoom magnification operation unit 103 is provided on the outer surface of the digital camera 101 as in the first embodiment. FIG. 4A is a top view in which the release button 102 and the rotation unit 111 are omitted from the zoom magnification operation unit 103 in the neutral position. A point c is the rotation center of the rotation unit 111. The magnet 123, the magnet 117, and the magnet 118 are arranged on substantially the same circle with the point c as the center. Further, the magnet 123, the magnet 117, and the magnet 118 are respectively magnetized as shown in FIG. In the magnet 123, a plurality of magnetic poles are alternately arranged in the moving direction, the sizes of the magnetic pole regions are substantially the same, and the magnetic pole regions are substantially equidistant. Thus, in the present embodiment, the magnetized state and shape of the magnet 123 are different from those of the magnet 113 of the first embodiment, and the positions of the magnets 117 and 118 are also different from those of the first embodiment.

  In this embodiment as well, as in the first embodiment, the magnet 123 and the magnet 117, and the magnet 123 and the magnet 118 are opposite to each other because the poles of the facing surfaces are the same. When no force in the rotational direction other than the repulsive force by the magnet is applied to the zoom magnification operation unit 103, the zoom magnification operation unit 103 is held at the neutral position by the repulsive force between the magnets represented by the arrows d and e. In the neutral position, the magnetic field detection sensor 116 detects a magnetic field in the right direction as shown in FIG.

  When a force is applied to the zoom magnification operation unit 103 to rotate the rotation unit 111 in the direction b in FIG. 1 and the rotation unit 111 and the magnet 123 reach the first rotation angle, FIG. As shown, the magnetic field detection sensor 116 detects an upward magnetic field in FIG. When the magnetic field detection sensor 116 detects an upward magnetic field from a state where no zooming is performed at the neutral position, the CPU controls to zoom in the wide-angle direction at the slowest speed among the three stages of zoom speeds. When the operation on the rotating unit 111 is finished and the state returns to the neutral position in FIG. 4A, the magnetic field detection sensor 116 detects the magnetic field in the right direction. When the magnetic field detection sensor 116 detects the magnetic field in the right direction while performing zooming in the wide-angle direction at the slowest speed among the three zoom speeds, the CPU controls to end the zooming operation in the wide-angle direction. .

  When the rotating unit 111 is further rotated in the direction b in FIG. 1 from the state of FIG. 4B, the rotating unit 111 and the magnet 123 reach the second rotating angle, as shown in FIG. 4C. Thus, the magnetic field detection sensor 116 detects the leftward magnetic field in FIG. In this way, when a left-handed magnetic field is detected in the state where zooming in the wide-angle direction is performed at the slowest speed among the three zoom speeds, the CPU performs zooming operation in the wide-angle direction at the slowest speed. continue.

  When the rotating unit 111 is further rotated in the direction b in FIG. 1 from the state of FIG. 4C, the rotating unit 111 and the magnet 123 reach the third rotation angle, as shown in FIG. 4D. Thus, the magnetic field detection sensor 116 detects the downward magnetic field in FIG. As described above, when the magnetic field detection sensor 116 detects the left magnetic field in the state where the zoom is performed in the wide-angle direction at the slowest speed among the three zoom speeds, the CPU is secondly detected when detecting the downward magnetic field. Controls zooming in the wide-angle direction at a slow speed.

  On the other hand, when the force applied in the direction b in FIG. 1 is weakened and the state of FIG. 4D is changed to the state of FIG. 4C and FIG. 4B, the above is reversed. Change the zoom speed so that. That is, when the magnetic field detection sensor 116 detects the magnetic field in the left direction and subsequently detects the magnetic field in the upward direction while performing zooming in the wide-angle direction at the second slowest speed among the three stages of zoom speeds, the CPU Control to change the zoom speed in the wide-angle direction to the slowest speed.

  In addition, when the state shown in FIG. 4D is changed to the state shown in FIG. 4C, that is, in the state where zooming in the wide angle direction is performed at the second slowest speed among the three stages of zoom speeds, When the magnetic field is detected, the CPU continues the zooming operation in the wide angle direction at the second slowest speed.

  As described above, in the state of FIG. 4C, the zoom speed is determined according to the direction of the magnetic field detected until the left magnetic field is detected and the zoom speed at that time. It is possible to prevent frequent switching of the zoom speed due to a slight change in the rotation angle.

  When the rotation unit 111 is further rotated in the direction b in FIG. 1 from the state of FIG. 4D, the rotation unit 111 and the magnet 123 reach the fourth rotation angle, as shown in FIG. As described above, the magnetic field detection sensor 116 detects the rightward magnetic field in FIG. In the state of FIG. 4E, the zoom speed is determined according to the direction of the magnetic field detected until the right magnetic field is detected and the zoom speed at that time, as in the state of FIG. 4C. Is done.

  When the rotating unit 111 is further rotated in the direction b in FIG. 1 from the state of FIG. 4E, the rotating unit 111 and the magnet 123 reach the fifth rotating angle, as shown in FIG. 4F. Thus, the magnetic field detection sensor 116 detects the upward magnetic field in FIG.

  As described above, when the magnetic field detection sensor 116 detects the rightward magnetic field in the state where the zooming is performed in the wide-angle direction at the second slowest speed among the three stages of zoom speeds, the CPU then detects the upward magnetic field. Control is performed so that zooming is performed in the wide-angle direction at the fastest speed among the three zoom speeds.

  On the contrary, when the force applied in the direction b in FIG. 1 is weakened and the state of FIG. 4 (f) is changed to the state of FIG. 4 (e) and FIG. 4 (d), the above is reversed. Change the zoom speed so that.

  That is, when the magnetic field detection sensor 116 detects the magnetic field in the right direction and then detects the magnetic field in the downward direction in the state where the zooming is performed in the wide angle direction at the fastest speed among the three zoom speeds, the CPU Control the zoom speed to change to the second slowest speed.

  When the state shown in FIG. 4 (f) is changed to the state shown in FIG. 4 (e), that is, when an upward magnetic field is detected and then a right magnetic field is detected, the CPU has three zoom speeds. Continue zooming in the wide-angle direction at the fastest speed.

  When the rotating unit 111 is further rotated in the direction of b in FIG. 1 from the state of FIG. 4F and the rotating unit 111 is rotated to the end of the rotation range, the same as in the first embodiment. In addition, it is possible to reduce the contact sound generated when the magnet is turned to the end by the repulsive force of the magnet.

  The zoom speed control as described above is not only performed when zooming in the wide angle direction, but also when zooming is performed in the telephoto direction by rotating the rotating unit 111 in the direction a in FIG. Is done in the same way.

  As described above, in the present embodiment, even when the zoom speed can be changed according to the rotation angle of the rotation unit 111, the rotation direction and rotation angle of the rotation unit 111 are detected without contact. Therefore, it is possible to reduce the operation sound generated when the rotating unit 111 is rotated.

(Third embodiment)
The third embodiment of the present invention will be described below with reference to the accompanying drawings. In the present embodiment, the same members as those in the second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  This embodiment is the same as the second embodiment in that the speed for changing the zoom magnification of the digital camera 101 can be selected from a plurality of speeds, but the magnet 124 of this embodiment is the same as the magnet of the second embodiment. 123 and the magnetized state are different. Specifically, in the magnet 123 of the second embodiment, the size of each magnetic pole region is substantially the same, but in the magnet 124 of this embodiment, the size of some of the magnetic pole regions is the same as that of other magnetic poles. It is different from the size of the area. Further, the positions of the magnet 117 and the magnet 118 are different from those of the second embodiment, and accordingly, the positions of the hole 119 and the hole 120 provided in the flexible printed circuit board 114 are also different.

  The shape of the magnet 124 in the zoom magnification operation unit 103 of the present embodiment will be described with reference to FIG. The zoom magnification operation unit 103 is provided on the outer surface of the digital camera 101 as in the first and second embodiments. FIG. 5 is a top view in which the release button 102 and the rotation unit 111 are omitted from the zoom magnification operation unit 103 in the neutral position. A point c is the rotation center of the rotation unit 111. The magnet 124, the magnet 117, and the magnet 118 are arranged on substantially the same circle with the point c as the center. Further, the magnet 124, the magnet 117, and the magnet 118 are magnetized as shown in FIG. 5, and the shape and magnetized state of the magnet 124 are different from those of the magnet 123 of the second embodiment. Further, the positions of the magnet 117 and the magnet 118 are also different from those of the second embodiment.

  As shown in FIG. 5, the areas of the magnetic pole 125 and the magnetic pole 126 of the magnet 124 are larger than the areas of the other magnetic poles of the magnet 124. The areas of the magnetic poles other than the magnetic pole 125 and the magnetic pole 126 have substantially the same size. In other words, the magnetic pole area of the magnet 124 has a plurality of magnetic poles alternately arranged in the movement direction at substantially equal intervals except for some magnetic poles, and a part of the magnetic pole areas is larger than the area of the other magnetic poles. Therefore, the rotation angle of the rotation unit 111 that performs zooming at the second slowest speed among the zoom speeds is wide. This is because when the user operates the zoom magnification operation unit 103, it is easy to select the second slowest zoom speed that is assumed to be the most frequently used by the user.

  In the present embodiment, as in the first and second embodiments, the magnet 124 and the magnet 117, and the magnet 124 and the magnet 118 have the same poles on the opposing surfaces, and thus repel each other. Fit. When no force in the rotational direction other than the repulsive force by the magnet is applied to the zoom magnification operation unit 103, the zoom magnification operation unit 103 is held at the neutral position by the repulsive force between the magnets represented by the arrows d and e. In the neutral position, the magnetic field detection sensor 116 detects a magnetic field in the right direction as shown in FIG.

  The zoom speed control is the same as that of the second embodiment except for the above-described changes, and thus detailed description thereof is omitted.

  As described above, in this embodiment, the areas of the magnetic pole 125 and the magnetic pole 126 of the magnet 124 are larger than the other magnetic poles of the magnet 124, and zooming is performed at the second slowest zoom speed. The turning angle of the turning portion 111 is wide. Therefore, when the user operates the zoom magnification operation unit 103, it is possible to easily select the second slowest zoom speed that is most frequently used by the user. In the magnet 124, the magnetic pole that makes the region larger than the other magnetic poles may not be the magnetic pole corresponding to the second slowest zoom speed, and if the magnetic pole that makes the region larger than the other magnetic poles is determined according to the purpose. Good. Further, when it is desired to change the width of the rotation angle according to each zoom speed, the sizes of the magnetic pole regions may be different from each other.

  Further, as in the first and second embodiments, the operation sound generated when the rotating unit 111 is rotated, and the contact generated when the rotating unit 111 is rotated to the end of the rotation range. Sound can be reduced.

  In the above three embodiments, a magnetic field detection sensor capable of detecting a magnetic field in a plurality of directions is used as the magnetic field detection means. However, a magnetic field detection sensor capable of detecting a plurality of magnetic fields as long as the sensor can detect the direction of the magnetic field. Not necessary. For example, a configuration may be adopted in which a plurality of magnetic field detection sensors are used and each is arranged so that the detection direction of the magnetic field is different.

  In the above-described three embodiments, the case where the operation member is adapted to change the magnification of the optical zoom or the electronic zoom has been described. However, the direction of the detected magnetic field is applied to the operation member used for operation of other functions. The control associated with is performed. For example, in a playback mode in which one of a plurality of images recorded on a recording medium is displayed on the image display unit, the present invention may be applied to an operation member that performs an image feed operation for changing the image to be displayed to the next image. Absent. Further, since the present invention can be applied to an operation member used for an operation of a function that can be executed by an electronic device other than the imaging device, such as the image feeding operation described above, the present invention is applied to an electronic device other than the imaging device. can do.

  In the above-described three embodiments, the case where the present invention is applied to an operation member that can rotate with respect to the device main body such as the rotation unit 111 has been described. It is also possible to apply to an operation member that can move directly. In such a case, the magnets corresponding to the magnet 117 and the magnet 118 may be arranged on the movement trajectory of the magnet corresponding to the magnet 113 or the like, or on the extension of the movement trajectory, that is, on substantially the same straight line in the movement direction of the operation member. Good.

  In the second and third embodiments, the case where the zoom speed can be switched in three stages has been described. However, the zoom speed may be switched in other stages, and the zoom speed may be switched. A magnet having a corresponding number of magnetic poles may be used.

  Further, in the second and third embodiments, the configuration in which the rotating magnet is composed of one magnet has been described, but a similar configuration may be formed by a plurality of magnets. For example, three magnets as shown in FIG. 6 may be connected and used instead of the magnet 123 of the second embodiment. Alternatively, a configuration in which six magnets as shown in FIG. 7A are arranged and connected in the moving direction as shown in FIG. In addition, when connecting and using a some magnet, it is desirable to pinch | interpose a spacer between magnets.

  As described above, each of the above-described three embodiments is merely a specific example for carrying out the present invention, and the technical scope of the present invention should not be construed as being limited thereto. . The present invention can be implemented in various forms without departing from the technical idea or the main features thereof.

DESCRIPTION OF SYMBOLS 101 Digital camera 103 Zoom magnification operation part 111 Rotation part 113, 123, 124 Magnet (1st magnet)
116 Magnetic field detection sensor 117, 118 Magnet (second magnet)

Claims (9)

An operation member provided so as to be rotatable with respect to the device body;
A first magnet that moves as the operating member moves;
A magnetic field detection means for detecting a magnetic field in a plurality of directions, arranged in the vicinity of the movement locus of the first magnet;
A second magnet disposed on the movement trajectory of the first magnet or on an extension line of the movement trajectory,
The first magnet and the second magnet are arranged on substantially the same circle centered on a point that is the rotation center of the operation member so that the magnetic poles at the ends facing each other are the same,
An electronic apparatus characterized in that the direction of a magnetic field detected by the magnetic field detection means changes with the movement of the operation member. Two of the second magnets are arranged so as to sandwich the first magnet on the movement locus of the first magnet or on an extension line of the movement locus,
The electronic device according to claim 1, wherein the operation member is held at a neutral position within a movable range by a repulsive force between the first magnet and the two second magnets.   The electronic apparatus according to claim 1, wherein the movable range of the operation member is limited by the second magnet. The first magnet, the electronic device according to any one of claims 1 to 3, wherein a plurality of magnetic poles in the movement direction are alternately arranged. The electronic apparatus according to claim 4 , wherein the first magnet has a plurality of magnetic poles alternately arranged at substantially equal intervals in the moving direction. The first magnet has a plurality of magnetic poles alternately arranged in a moving direction at substantially equal intervals except for some magnetic poles, and the area of the partial magnetic poles is larger than the area of other magnetic poles. The electronic device according to claim 4 . The first magnet, the electronic device according to any one of claims 4 to 6, characterized in that it is constituted by arranging a plurality of magnets in the moving direction. It said magnetic field detection means, the electronic device according to any one of claims 1 to 7, characterized in that the sensing direction of the magnetic field is composed of a plurality of sensors which are arranged differently. The electronic device according to any one of claims 1 to 8, characterized in that it comprises a control means for performing control associated with the direction of the magnetic field detected by the magnetic field detection means.

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