JP2007305413A - Rotational operation type electric component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotational operation type electric component capable of easily adjusting a clicking feeling caused by magnetic force. <P>SOLUTION: The rotor part of this rotational operation type electric component is mainly composed of a rotationally operated operating shaft 1, and a body of rotation 2 which is integrated with the operating shaft 1 while holding a detecting magnet 3, and a support member 5 forming a stator part rotatably supports the operating shaft 1. An adjusting holder 9 is threadedly attached to the support member 5, and magnetic force acting between a second clicking magnet 11 fixed to the adjusting holder 9 and a first clicking magnet 10 fixed to the boy of rotation 2 varies in accordance with the rotational positions of the rotor part. In addition, the interval (d) between both magnets 10, 11 facing each other can be adjusted by threadedly moving the adjusting holder 9 with respect to the support member 5. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a rotary operation type electric component, and more particularly, to a rotary operation type electric component including a magnetic click mechanism that uses a magnetic attractive force or a repulsive force.

  In general, the click mechanism of a rotary operation type electrical component has a rotor-side member and a stator-side member that are detachably elastically contacted so that sliding resistance between the two members is rapidly reduced at a predetermined rotational position during the rotation operation. Thus, a click feeling is generated. However, in the case of a rotary operation type electrical component that uses a non-contact sensor such as a magnetic sensor or an optical sensor as a means for detecting the amount of rotation and the direction of rotation, a general click mechanism for engaging and disengaging members that are in elastic contact When it is adopted, the click feeling becomes excessively clear, and it becomes difficult to obtain a good operation feeling. In addition, as the number of operations increases, non-contact sensors have the advantage of maintaining stable detection accuracy over a long period of time compared to contact-type detection means in which wear of the contact portion is unavoidable. Also from the viewpoint of making use of it, it is not preferable to employ a sliding type in which wear is inevitable as a click mechanism of a rotary operation type electrical component using a non-contact type sensor.

Therefore, conventionally, a technique has been proposed in which a click mechanism of a rotary operation type electric component using a non-contact sensor as a rotation detection means is configured by a magnet (for example, see Patent Document 1). That is, if a click magnet is fixed to each of the rotor part and the stator part and these magnets are arranged so that the magnetic force acting between the two magnets changes according to the rotational position of the rotor part, the click feeling can be achieved. Therefore, it is possible to realize a magnetic click mechanism that does not become excessively clear and does not cause wear.
Japanese Patent Laying-Open No. 2004-20222 (page 9, FIG. 5)

  By the way, in the conventional rotary operation type electric component in which the click mechanism is constituted by a magnet, the strength of the click feeling is determined by the magnitude of the attractive force and the repulsive force between the pair of click magnets. Depending on the application of the electrical component, a clear click feeling may be preferable, or a slight click feeling may be preferable. Therefore, in order to increase the versatility of this type of rotary operation type electrical component, it is desirable that the click feeling can be easily adjusted. The size of the click feeling could not be adjusted unless complicated work such as exchanging was performed.

  The present invention has been made in view of the actual situation of the prior art, and an object of the present invention is to provide a rotary operation type electric component that can easily adjust the size of the click feeling generated by the magnetic force.

  In order to achieve the above object, in the rotary operation type electrical component of the present invention, the rotor portion to be rotated, the stator portion that rotatably supports the rotor portion, and the first click fixed to the rotor portion. A first click magnet fixed to the stator portion and opposed to the first click magnet, and the first click click fixed to the rotor portion or the stator portion so as to be able to be moved back and forth. An adjustment holder for holding the magnet or the second click magnet, and a rotation detecting means for detecting the rotation of the rotor portion, the first click magnet and the second click magnet being between them The magnetic force to be applied is magnetized so as to change according to the rotational position of the rotor portion, and the attachment position of the adjustment holder with respect to the rotor portion or the stator portion is changed. The opposing distance between said first click magnet the second click magnet has adjustable I.

  The rotary operation type electric component configured as described above is an adjustment that changes the mounting position by screwing and retracting the adjustment holder that holds the first click magnet relative to the rotor portion, or holds the second click magnet. By changing the mounting position by screwing the holder back and forth with respect to the stator portion, the facing distance between the first click magnet and the second click magnet can be easily adjusted. That is, if the interval between the first and second click magnets is reduced, a clear click feeling can be obtained, and if the interval is increased, a slight click feeling can be obtained. The size of the click feeling can be easily adjusted according to the use of the electrical component, and versatility can be enhanced at low cost.

  In the above configuration, even if the adjustment holder is fixed to any one of the rotor portion and the stator portion so as to be able to advance and retract, the facing interval between the first and second click magnets can be easily adjusted. In consideration of the fact that a rotational operation force acts on the adjustment holder screwed to the adjustment holder, the adjustment holder is fixed to the stator portion so as to be able to advance and retreat and holds the second click magnet. The reliability of the magnetic click mechanism can be improved, which is preferable.

  In the above configuration, when the first click magnet and the second click magnet are both annular magnets in which S and N poles are alternately magnetized along the circumferential direction, The magnet can be used and the mounting structure can be simplified, which is preferable.

  Further, in the above configuration, when the rotation detecting means includes a magnetic sensor or an optical sensor, a non-contact sensor can maintain a stable detection accuracy over a long period of time. The combined use of can significantly extend the life of the rotary operation type electrical component.

  According to the rotary operation type electric component of the present invention, the adjustment holder that holds the first click magnet is screwed back and forth with respect to the rotor portion to change the mounting position, or the adjustment holder that holds the second click magnet is the stator. The spacing between the first click magnet and the second click magnet can be easily adjusted by changing the mounting position by screwing back and forth with respect to the portion. That is, if the interval between the first and second click magnets is reduced, a clear click feeling can be obtained, and if the interval is increased, a slight click feeling can be obtained. The size of the click feeling can be easily adjusted according to the use of the electrical component, and versatility can be enhanced at low cost. In particular, a reliable magnetic click mechanism can be obtained if the adjustment holder is fixed to the stator portion so as to be capable of screwing back and forth to hold the second click magnet.

  An embodiment of the invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a rotary operation type electrical component according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the rotary operation type electrical component, and FIG. FIG. 3 is a perspective view of a click magnet provided in the rotary operation type electric component.

  The rotor portion of the rotary operation type electrical component shown in FIGS. 1 and 2 includes an operation shaft 1 that is rotated, a rotary body 2 that is integrated by press-fitting a rear end portion of the operation shaft 1, It is mainly composed of an annular detection magnet 3 fixed in a space on the back side, and a retaining washer 4 is fitted near the rear end of the operation shaft 1. Further, the stator portion of the rotary operation type electric component is mainly configured by a support member 5 that rotatably supports the operation shaft 1 and a cylindrical outer shell member 6 to which the support member 5 is attached. The opening on the rear end side of the outer shell member 6 is closed by a disc-shaped bottom plate 7. A bearing 8 that rotatably connects the rotor portion and the stator portion is press-fitted into a space on the back side of the support member 5 that surrounds the operation shaft 1 in the vicinity of the rotating body 2. That is, the inner peripheral portion of the bearing 8 is fixed to the operation shaft 1 and the outer peripheral portion is fixed to the support member 5. Further, the outer peripheral surface of the inner cylindrical portion 5a of the support member 5 is a male screw-shaped portion, and an adjustment holder 9 having a female screw-shaped portion 9a corresponding to the male screw-shaped portion is screwed to the inner cylindrical portion 5a. It is fixed to the support member 5. However, the mounting position of the adjustment holder 9 with respect to the support member 5 can be changed as appropriate by screwing and retracting the female screw-shaped portion 9a to and from the inner cylindrical portion 5a. In addition, a second click magnet 11 described later is fixed to the adjustment holder 9.

  The click mechanism of the rotary operation type electric component is constituted by a first click magnet 10 fixed to the front side of the rotating body 2 and a second click magnet 11 fixed to the back side of the adjustment holder 9. The two click magnets 10 and 11 are opposed to each other with a predetermined distance d. The first click magnet 10 and the second click magnet 11 are annular magnets of the same type and the same shape, and as shown in FIG. 3, S poles and N poles are alternately magnetized along the circumferential direction. Has been. The magnetic force acting between the first click magnet 10 and the second click magnet 11 becomes an attractive force when the opposite polarities (S pole and N pole) of the magnets 10 and 11 are opposed to each other. However, when the same poles of the magnets 10 and 11 are opposed to each other, a repulsive force is generated. Therefore, the magnetic force acting between the first click magnet 10 fixed to the rotor portion and the second click magnet 11 fixed to the stator portion via the adjustment holder 9 is the rotational position of the rotor portion. Thus, a click feeling can be obtained during the rotation operation. Since the adjustment holder 9 that holds the second click magnet 11 can be screwed back and forth with respect to the support member 5 to change the mounting position, the first click magnet 10 and the second click magnet The facing distance d to 11 can be easily adjusted.

  A GMR sensor (giant magnetoresistive sensor) 12 is used as a rotation detecting means in this rotary operation type electric component. The GMR sensor 12 is mounted in the center of the front surface of the circuit board 13 and is positioned in the vicinity of the detection magnet 3. The circuit board 13 is held by the outer shell member 6 and is located behind the rotating body 2. Then, the rotating body 2 and the detection magnet 3 rotate integrally with the rotation of the operation shaft 1, and the position of the detection magnet 3 with respect to the GMR sensor 12 changes, so that the magnetic change is detected by the GMR sensor 12. It has come to be. A circuit component 14 is mounted on the other surface of the circuit board 13, and a detection signal of the GMR sensor 12 is output to the circuit component 14, and the rotation amount and rotation direction of the operation shaft 1 are detected based on the detection signal. It has come to be.

  As described above, the rotary operation type electrical component according to the present embodiment is configured such that the adjustment holder 9 that holds the second click magnet 11 is screwed back and forth with respect to the support member 5 to change the mounting position. The facing distance d between the click magnet 10 and the second click magnet 11 can be easily adjusted. That is, if the facing distance d between the first and second click magnets 10 and 11 is reduced, a clear click feeling can be obtained, and if the facing distance d is increased, a fine click feeling can be obtained. Therefore, the size of the click feeling can be easily adjusted according to the application of the rotary operation type electric component, and versatility can be enhanced at low cost.

  In addition, the first click magnet 10 and the second click magnet 11 used in this embodiment are both of the same type and shape in which S and N poles are alternately magnetized along the circumferential direction. Since the magnet is an annular magnet, the magnetic click mechanism is easy to manage components and easy to simplify the mounting structure, and thus has good assemblability.

  In addition, in the rotary operation type electrical component according to the present embodiment example, the rotation detecting means for detecting the rotation of the rotor portion is configured by the detection magnet 3 and the GMR sensor 12 which is a non-contact type sensor. Since a magnetic click mechanism that can maintain stable detection accuracy and is free from the risk of wear is employed, the product life can be significantly extended by the combined use of the non-contact type rotation detection means and the magnetic click mechanism. However, the rotation of the rotor portion may be detected by a non-contact type sensor other than the GMR sensor, for example, an optical sensor.

  Note that the adjustment holder 9 is omitted, the second click magnet 11 is directly fixed to the stator portion (support member 5), and an adjustment holder (not shown) that holds the first click magnet 10 is a rotor portion ( It is also possible to easily adjust the facing distance d between the first and second click magnets 10 and 11 by fixing the rotary body 2) so as to be able to advance and retract.

It is sectional drawing of the rotary operation type electrical component which concerns on the example of embodiment of this invention. It is a disassembled perspective view of this rotation operation type electric component. FIG. 3 is a perspective view of a click magnet provided in the rotary operation type electric component.

Explanation of symbols

1 Operation shaft (rotor part)
2 Rotating body (rotor part)
3 Magnet for detection (rotor part)
5 Support member (stator part)
6 Outer shell member (stator part)
DESCRIPTION OF SYMBOLS 8 Bearing 9 Adjustment holder 9a Female thread shape part 10 1st click magnet 11 2nd click magnet 12 GMR sensor (magnetic sensor)
13 Circuit board d Opposite spacing

Claims (4)

A rotor portion that is rotated, a stator portion that rotatably supports the rotor portion, a first click magnet fixed to the rotor portion, and the first click magnet fixed to the stator portion A second click magnet that faces the rotor, an adjustment holder that is fixed to the rotor portion or the stator portion so as to be able to move back and forth, and holds the first click magnet or the second click magnet, and the rotor Rotation detection means for detecting the rotation of the part,
The first click magnet and the second click magnet are magnetized so that the magnetic force acting between them changes according to the rotational position of the rotor portion, and the rotor portion or the stator A rotating operation type electric component characterized in that an opposing distance between the first click magnet and the second click magnet can be adjusted by changing a mounting position of the adjustment holder with respect to a portion.   2. The rotary operation type electric component according to claim 1, wherein the adjustment holder is fixed to the stator portion so as to be capable of screwing back and forth and holds the second click magnet.   3. The first click magnet and the second click magnet according to claim 1 or 2, wherein each of the first click magnet and the second click magnet is an annular magnet in which S poles and N poles are alternately magnetized along a circumferential direction. A rotary operation type electric component characterized by being. The rotary operation type electric component according to any one of claims 1 to 3, wherein the rotation detecting means includes a magnetic sensor or an optical sensor.

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