JP2019013091A - Actuator - Google Patents

Abstract

To provide an actuator capable of giving a user bodily sensation of a strong vibration.SOLUTION: In an actuator 1, a magnetic driving circuit 6 vibrates a movable body 3 in an inner side of a support body 2 to a second direction X and a third direction Y. The movable body 3 includes an output member 30 which is extended to one side Z1 of a first direction Z and projected to an external side from the support body 2 in one side Z1 of the first direction Z, and gives a user bodily sensation through a first opposite part 32 of the output member 30. The movable body 3 includes a bearing part 33 that movably supports a bearing part 31 of the output member 30 to the first direction Z. A first elastic support part 41 that supports the first opposite part 32 to the second direction X and the third direction Y in a state of energizing the first opposite part 32 to one side Z1 of the first direction Z is provided between the first opposite part 32 of the movable body 3 and a first external surface 21 of the support body 2.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an actuator that generates various vibrations.

  A structure in which a movable body is vibrated in a second direction intersecting the first direction with respect to a support by a magnetic drive circuit having a coil and a magnet facing each other in the first direction as an actuator that generates vibration by a magnetic drive mechanism The movable body is covered with a cover such as a case used for the support (see Patent Document 1). Therefore, if the user vibrates the movable body in the second direction by the magnetic drive circuit while holding the support body, the center of gravity of the actuator changes, so that the user can experience the vibration of the movable body.

JP 2006-127789 A

  However, the actuator described in Patent Document 1 has a problem that the vibration that can be felt is weak because the vibration of the movable body is experienced through the support.

  In view of the above problems, an object of the present invention is to provide an actuator capable of experiencing strong vibrations.

  In order to solve the above problem, an actuator to which the present invention is applied includes a support, a movable body supported by the support so as to be movable, and covered by the support, and the support and the movable body. And a magnet provided on the other side member of the support body and the movable body and facing the coil in a first direction, the movable body with respect to the first direction. And a magnetic drive circuit that vibrates in a second direction that intersects with each other, wherein the movable body has an output member that protrudes outward from the support body.

  In the present invention, when the movable body is vibrated in the second direction by the magnetic drive circuit, the output member provided on the movable body vibrates in the second direction. Here, since the output member protrudes outside from the support, the user can directly touch the output member. Accordingly, it is possible to cause the user to feel a stronger vibration than when the user feels the vibration of the movable body via the support.

  In the present invention, the output member extends from a shaft portion extending in the first direction, and an end portion on one side of the shaft portion in the first direction, and extends in the first direction of the support body. An aspect having a first facing portion facing the first outer surface located on one side can be employed. According to this aspect, the user can experience the in-plane vibration of the first facing portion of the output member.

In the present invention, the movable body includes a bearing portion that supports the shaft portion so as to be movable in the first direction, and the output member is disposed between the support body and the output member in the second direction. And a first elastic support portion that urges the output member toward one side in the first direction, and restricts a movable range of the output member toward one side in the first direction. It is possible to adopt a mode in which a regulating portion is provided. According to this aspect, the pressure in the first direction when the user touches the first facing portion can be absorbed by the output member escaping to the other side in the first direction. Even in a state where the facing portion is pressed, the user can feel vibration. Further, since the first elastic support portion generates a drag when the user presses the first facing portion, the movable body is not greatly displaced in the first direction. Therefore, it is difficult for the coil and the magnet to come into contact with each other. Further, since the restricting portion that restricts the movable range of the output member to the one side in the first direction is provided, even when the first elastic support portion urges the output member to the one side in the first direction. The output member does not move to one side in the first direction from the set position.

  In the present invention, the first elastic support portion may adopt an aspect provided between the first facing portion and the first outer surface. According to this aspect, the first elastic support portion can be provided at an appropriate location in the wide range where the first facing portion and the first outer surface face each other.

  In the present invention, the first elastic support portion includes a first accommodation hole that opens on the first outer surface of the support body, and the first accommodation portion that is accommodated in the first accommodation hole and has the other in the first direction. A mode having a first ball in contact with the side and a first spring that biases the first ball toward one side in the first direction in the first accommodation hole can be adopted. According to this aspect, even when the first elastic support portion is provided, it is difficult to generate an extra space in the first direction.

  In the present invention, a cylindrical first ball holder that rotatably supports the first ball from the other side in the first direction is disposed inside the first accommodation hole so as to be movable in the first direction. The first spring may employ a mode in which the first ball is urged to one side in the first direction via the first ball holder. According to this aspect, since the first spring does not directly contact the first ball, it is possible to avoid an extra sliding load from being applied to the first ball from the first spring.

  In the present invention, a support member that rotatably supports the first ball at a plurality of locations in the circumferential direction from the other side in the first direction is provided inside the first ball holder, A mode in which the first ball is urged toward one side in the first direction via the first ball holder and the support member can be employed. According to this aspect, it is possible to avoid applying an extra sliding load from the first ball holder to the first ball.

  In the present invention, a first ball holder retaining member that prevents the first ball holder from slipping out from the first accommodation hole to one side in the first direction between the first ball holder and the support body. A mode in which the portion is provided can be adopted. According to this aspect, when the actuator is assembled, the first ball holder is prevented from coming out from the first accommodation hole to the one side in the first direction by the urging force of the first spring without providing the first facing portion. This makes it easy to assemble the actuator.

  In the present invention, the first ball holder is provided with a first ball retaining portion that prevents the first ball from slipping out from the first ball holder to one side in the first direction. can do. According to this aspect, when the actuator is assembled, the first ball can be prevented from coming off from the first ball holder to the one side in the first direction, so that the actuator can be easily assembled.

  In the present invention, a mode in which the first spring is a coil spring can be adopted. According to this aspect, it is suitable for providing a 1st elastic support part using a 1st accommodation hole.

  In the present invention, it is possible to adopt a mode in which a plurality of the first elastic support portions are provided around the shaft portion. According to this aspect, it is difficult to apply a force that causes the first facing portion to tilt with respect to the output member.

  In the present invention, the restricting portion extends from an end portion on the other side in the first direction of the shaft portion and faces a second outer surface located on the other side in the first direction of the support body. The second facing portion is movably supported in the second direction between the second facing portion, the second outer surface, and the second facing portion, and the second facing portion is supported in the other of the first direction. The aspect provided with the 2nd elastic support part urged | biased toward the side is employable. According to this aspect, it is possible to limit the displacement of the output member in one direction in the first direction, and it is difficult to prevent the vibration of the output member in the second direction. Further, since the first facing portion is always in contact with the first elastic support portion, rattling is unlikely to occur between the first facing portion and the first elastic support portion.

  In the present invention, the second elastic support portion includes a second receiving hole that opens at the second outer surface of the support, and a second receiving hole that is received in the second receiving hole and is disposed in the second facing portion in the first direction. The aspect which has the 2nd ball | bowl which contact | connects from the side, and the 2nd spring which urges | biases the 2nd ball | bowl to the other side of the said 1st direction in the said 2nd accommodation hole is employable. According to this aspect, even when the second elastic support portion is provided, it is difficult to generate an extra space in the first direction.

  In the present invention, a cylindrical second ball holder that rotatably supports the second ball from one side in the first direction is disposed inside the second accommodation hole so as to be movable in the first direction. The second spring may employ a mode in which the second ball is urged to the other side in the first direction via the second ball holder. According to this aspect, since the second spring does not directly contact the second ball, it is possible to avoid an extra sliding load from being applied to the second ball from the second spring.

  In the present invention, the magnetic drive circuit vibrates the movable body in a third direction intersecting the first direction and the second direction, and the first elastic support portion causes the output member to move to the second direction. It is possible to adopt a mode in which it is supported so as to be movable in the direction and the third direction. According to this aspect, the user can experience vibrations in the second direction and the third direction.

  In the present invention, a mode is adopted in which a viscoelastic member that contacts the support and the movable body in the first direction is provided in a portion where the support and the movable body face each other in the first direction. be able to. According to this aspect, the resonance when the movable body is vibrated can be suppressed by the viscoelastic member. At that time, since the viscoelastic member is deformed in the shear direction, the viscoelastic member has a deformation characteristic in which a linear component is larger than a non-linear component. According to this aspect, when the movable body moves, the elastic member is deformed in a direction (shear direction) intersecting the thickness direction (axial direction). For this reason, even if it moves in any direction, it is a deformation in a direction in which it is pulled and stretched, so that it has a deformation characteristic in which a linear component (spring coefficient) is larger than a non-linear component (spring coefficient). Therefore, in the viscoelastic member, the spring force according to the movement direction is constant. Therefore, by using the spring element in the shear direction of the viscoelastic member, it is possible to improve the reproducibility of the vibration acceleration with respect to the input signal, so that the vibration can be realized with a delicate nuance.

  In the present invention, the viscoelastic member may be provided in a state compressed in the first direction. According to this aspect, even when the distance between the support body and the movable body in the first direction at the position where the viscoelastic member is disposed varies, the viscoelastic member is disposed in a state compressed in the first direction. Therefore, the viscoelastic member is always in contact with the support and the movable body. For this reason, the viscoelastic member can reliably follow the vibration of the movable body.

  In the present invention, when the movable body is vibrated in the second direction by the first magnetic drive circuit, the movable body vibrates in the second direction together with the output member. Here, since the output member protrudes outside from the support, the user can directly touch the output member. Accordingly, it is possible to cause the user to feel a stronger vibration than when the user feels the vibration of the movable body via the support.

It is a perspective view of an actuator concerning an embodiment of the present invention. It is sectional drawing of the actuator shown in FIG. FIG. 2 is an exploded perspective view showing a state where a first facing portion of an output member is removed from the actuator shown in FIG. 1. It is a disassembled perspective view of the state which removed the axial part of the output member from the state shown in FIG. It is a disassembled perspective view of the state which removed the bearing part with respect to the axial part of an output member from the state shown in FIG. It is a disassembled perspective view which shows the structure inside the cover shown in FIG. It is the disassembled perspective view which decomposed | disassembled the magnetic drive circuit and wiring board which are shown in FIG. It is the disassembled perspective view which decomposed | disassembled the magnetic drive circuit shown in FIG. 7 into the coil by the side of a support body, and the magnet by the side of a movable body. It is the disassembled perspective view separated from the magnet and yoke of the magnetic drive circuit shown in FIG. It is a disassembled perspective view of the state which removed the coil of the magnetic drive circuit shown in FIG. 8 from the coil holder. It is a disassembled perspective view of the movable body shown in FIG. It is a disassembled perspective view which shows the structural example of the 1st elastic support part shown in FIG. It is a disassembled perspective view which shows the structural example 2 of the 1st elastic support part shown in FIG. It is a disassembled perspective view which shows the structural example 3 of the 1st elastic support part shown in FIG. It is sectional drawing which shows the structural example 4 of the 1st elastic support part shown in FIG.

  Embodiments of the present invention will be described with reference to the drawings. In the following description, three directions intersecting each other will be described as a first direction Z, a second direction X, and a third direction Y, respectively. Further, the first direction Z, the second direction X, and the third direction Y are directions orthogonal to each other. Moreover, X1 is attached to one side of the second direction X, X2 is attached to the other side of the second direction X, Y1 is attached to one side of the third direction Y, and Y2 is attached to the other side of the third direction Y. And Z1 is attached to one side of the first direction Z, and Z2 is attached to the other side of the first direction Z.

  The actuator 1 to which the present invention is applied has a magnetic drive circuit 6 that moves the movable body 3 relative to the support 2, and the magnetic drive circuit 6 has a coil and a magnet. In such a magnetic drive circuit 6, the coil is provided on the support body 2 (one side member) side, the magnet is provided on the movable body 3 (other side member) side, and the magnet is on the support body 2 (the other side). It is possible to adopt a mode in which the coil is provided on the movable member 3 (one side member) side. In the following description, the description will focus on an aspect in which the coil is provided on the support 2 side and the magnet is provided on the movable body 3 side.

(overall structure)
FIG. 1 is a perspective view of an actuator 1 according to an embodiment of the present invention. 2 is a cross-sectional view of the actuator 1 shown in FIG. 1, and FIGS. 2A and 2B are cross-sectional views of the actuator 1 cut in the first direction Z along the line AA ′. FIG. 4 is a cross-sectional view of the actuator 1 when cut in a first direction Z along a diagonal line BB ′. FIG. 3 is an exploded perspective view of the actuator 1 shown in FIG. 1 with the first facing portion 32 of the output member 30 removed. 4 is an exploded perspective view of the output member 30 with the shaft portion 31 removed from the state shown in FIG. FIG. 5 is an exploded perspective view of the output member 30 with the bearing portion 33 removed from the shaft portion 31 from the state shown in FIG. FIG. 6 is an exploded perspective view showing the inner structure of the cover 11 shown in FIG.

As shown in FIGS. 1 and 2, the actuator 1 of this embodiment has a rectangular parallelepiped shape as a whole. As shown in FIG. 2, the actuator 1 includes a support body 2, a movable body 3 movably supported on the support body 2, and a magnetic drive circuit 6 that moves the movable body 3 relative to the support body 2. The magnetic drive circuit 6 vibrates the movable body 3 in the second direction X and the third direction Y. As will be described later, the movable body 3 includes a bearing portion 33, an output member 30, and a restricting portion 35 in addition to the first magnet 81 and the first yoke 86 constituting the magnetic drive circuit 6. 30 includes a shaft portion 31 extending in the first direction Z and a first facing portion 32 connected to an end portion on one side Z1 of the shaft portion 31 in the first direction Z. The support 2 has a cover 11 that covers the movable body 3 from both sides in the first direction Z, both sides in the second direction X, and both sides in the third direction Y, and a coil holder 60 disposed inside the cover 11. doing. The cover 11 has a first cover member 16 positioned on one side Z1 in the first direction Z and a coil holder 60 between the first cover member 16 and the first cover member 16 on the other side in the first direction Z. And a second cover member 17 overlapping from Z2. The first cover member 16 has a rectangular end plate portion 161 located on one side Z1 in the first direction Z, and a rectangular tube shape extending from the end portion of the end plate portion 161 to the other side Z2 in the first direction Z. A body portion 162.

  As shown in FIGS. 2 to 6, the second cover member 17 has a rectangular plate shape, and overlaps the body portion 162 from the other side Z <b> 2 in the first direction Z. In this state, the first cover member 16, the coil holder 60, and the second cover member 17 are fixed by four screws 19 that are stopped from one side Z1 in the first direction Z at each of the four corners. Yes. Near the four corners of the end plate portion 161 of the first cover member 16, a bottomed concave portion 163 that accommodates the head of the screw 19 is formed.

  As shown in FIG. 2, in the first cover member 16, a hole 164 through which the shaft of the screw 19 passes is formed at the bottom of the recess 163. In the coil holder 60, a cylindrical portion 64 through which the shaft of the screw 19 passes is formed at a position overlapping the concave portion 163. A hole 174 for stopping the shaft of the screw 19 is formed at a position overlapping the cylindrical portion 64 in the second cover member 17. In the support body 2, the first outer surface 21 of the support body 2 is configured by the surface on the one side Z <b> 1 in the first direction Z of the end plate portion 161 of the first cover member 16, and the second cover member 17 in the first direction Z. The second outer surface 22 of the support 2 is constituted by the surface of the other side Z2.

  In the center of the end plate portion 161 of the first cover member 16, an opening 166 is formed to project the shaft portion 31 extending in the first direction Z in the movable body 3 to the one side Z <b> 1 in the first direction Z. . The end plate portion 161 is a thin plate portion in which an annular portion 167 surrounding the opening 166 is thinner than the surroundings. On the first outer surface 21 of the support body 2 (the surface on the one side Z1 in the first direction Z of the end plate portion 161 of the first cover member 16), one side in the first direction Z is located radially outward from the annular portion 167. A stopper convex portion 211 protruding to the side Z1 is formed. In the center of the second cover member 17, an opening 176 is formed for projecting the shaft portion 31 from the inside of the cover 11 to the other side Z <b> 2 in the first direction Z.

  The first cover member 16 is formed with four first accommodation holes 26 that open on each line connecting the four corners of the first outer surface 21 and the opening 166, and each of the four first accommodation holes 26 is formed. Utilizing this, a first elastic support portion 41 described later is configured. In addition, the second cover member 17 is formed with four second accommodation holes 27 that open on each line connecting the four corners of the second outer surface 22 and the opening. A second elastic support portion 42, which will be described later, is configured.

(Configuration of magnetic drive circuit 6)
FIG. 7 is an exploded perspective view in which the magnetic drive circuit 6 and the wiring board 18 shown in FIG. 2 are disassembled. FIG. 8 is an exploded perspective view in which the magnetic drive circuit 6 shown in FIG. 7 is disassembled into a coil on the support 2 side and a magnet on the movable body 3 side. FIG. 9 is an exploded perspective view in which the magnet of the magnetic drive circuit 6 shown in FIG. 8 is separated from the yoke. FIG. 10 is an exploded perspective view of the magnetic drive circuit 6 shown in FIG. 8 with the coil removed from the coil holder 60.

  As shown in FIGS. 2, 6, and 7, in the support 2, the wiring board 18 is disposed so as to overlap the coil holder 60 on the other side Z <b> 2 in the first direction Z. A hole 184 into which the cylindrical portion 64 of the coil holder 60 is fitted is formed. Therefore, when the first cover member 16, the coil holder 60, and the second cover member 17 are fixed by the screws 19, the wiring board 18 is held between the coil holder 60 and the second cover member 17.

  The wiring board 18 has a frame shape in which a plus-shaped opening 180 projecting from the center to both sides in the second direction X and both sides in the third direction Y is formed, and the output member 30 is located inside the opening 180. The shaft portion 31 and the bearing portion 33 pass therethrough. In the wiring board 18, two holes 188 are formed at positions adjacent to the inside of each of the four holes 184, and the hole of the coil holder 60 is formed for each of the eight holes 188 in total. The first terminal pins 181 press-fitted into 608 are respectively fitted. A total of four second terminal pins 182 are held on one side portion of the wiring board 18 so as to stand up toward one side Z1 in the first direction Z. The second terminal pins 182 are pins of the connector 185 fixed to the surface of the other side Z2 of the wiring board 18 in the first direction Z. The first terminal pin 181 is connected to an end (not shown) of a coil, which will be described later, and is electrically connected to the second terminal pin 182 through a wiring pattern formed on the wiring board 18.

  As shown in FIGS. 8, 9 and 10, a circular opening 61 through which the shaft portion 31 and the bearing portion 33 of the output member 30 shown in FIG. Yes. In the coil holder 60, on both sides in the second direction X with respect to the opening 61, elongated hole-shaped first coil holding holes 66 are formed with the major axis direction in the third direction Y. Each of the one coil holding holes 66 accommodates a first coil 71 having a long side portion 711 (effective side portion) extending in the third direction Y. The first coil holding hole 66 is an opening. However, at the bottom of the first coil holding hole 66, a receiving portion that supports the short side portions 712 (invalid side portions) positioned at both ends in the third direction Y in the first coil 71 from the other side Z2 in the first direction Z. 661 is formed.

  In the coil holder 60, on both sides in the third direction Y with respect to the opening 61, elongated hole-shaped second coil holding holes 67 with the major axis direction in the second direction X are formed. Each of the two coil holding holes 67 accommodates a second coil 72 having a long side portion 721 (effective side portion) extending in the second direction X. The second coil holding hole 67 is an opening. However, at the bottom of the second coil holding hole 67, a receiving portion that supports the short side portions 722 (invalid side portions) located at both ends in the second direction X in the second coil 72 from the other side Z2 in the first direction Z. 671 is formed.

  The first coil 71 and the second coil 72 are accommodated in the first coil holding hole 66 and the second coil holding hole 67, respectively, and are fixed to the coil holder 60 by a method such as adhesion. The first coil 71 and the second coil 72 start to be wound on the surface on one side Z1 in the first direction Z of the receiving portions 661 and 671, the inner surface of the first coil holding hole 66, and the inner surface of the second coil holding hole 67. , End portions (not shown) of the coil, and grooves 662 and 672 for passing the end portion (not shown) of the winding end are formed, and winding start ends of the first coil 71 and the second coil 72, and winding The end of the end is routed to the first terminal pin 181 via the inside of the grooves 662 and 672. Therefore, in the first coil holding hole 66 and the second coil holding hole 67, the first coil 71 and the second coil 72 do not generate floating due to the overlap with the winding start end portion. The first coil 71 and the second coil 72 do not protrude from the first coil holding hole 66 and the second coil holding hole 67 to the one side Z1 in the first direction Z.

  In the coil holder 60, a concave portion 68 recessed in the second direction X is formed on the outer surface of the side portion 62 where the first coil holding holes 66 are formed, and the second coil holding holes 67 are respectively formed. A concave portion 69 that is recessed in the third direction Y is formed on the outer surface of the formed side portion 63.

(Configuration of magnet 8 etc.)
As shown in FIGS. 8 and 9, the movable body 3 includes a first yoke 86 having a first plate portion 860 that faces the first coil 71 and the second coil 72 on one side Z1 in the first direction Z. And a second yoke 87 provided with a second plate portion 870 facing the first coil 71 and the second coil 72 on the other side Z2 in the first direction Z. It is located between the coil holder 60 and the wiring board 18 described with reference to FIG. A surface of the first plate portion 860 of the first yoke 86 facing the first coil 71 and the second coil 72 in the first direction Z, and a first plate 71 and the second coil of the second plate portion 870 of the second yoke 87. A magnet facing the first coil 71 and the second coil 72 in the first direction Z is held on at least one of the surfaces facing the 72 in the first direction Z.

  In this embodiment, the movable body 3 is fixed as a magnet by a method such as adhesion to a portion of the first plate portion 860 of the first yoke 86 facing the first coil 71 on the one side Z1 in the first direction Z. 1 magnet 81 and a second magnet 82 fixed to the portion of the first plate portion 860 of the first yoke 86 facing the second coil 72 on one side Z1 in the first direction Z by a method such as adhesion. ing. The movable body 3 is a third magnet fixed by a method such as adhesion to a portion of the second plate portion 870 of the second yoke 87 facing the first coil 71 on the other side Z2 in the first direction Z as a magnet. 83 and a fourth magnet 84 fixed to the portion of the second plate portion 870 of the second yoke 87 facing the second coil 72 on the other side Z2 in the first direction Z by a method such as adhesion. .

  The first magnet 81 and the third magnet 83 are opposed to the long side portion 711 of the first coil 71 on one side Z1 and the other Z2 side in the first direction Z, and the second magnet 82 and the fourth magnet 84 are the second side. The long side portion 721 of the coil 72 is opposed to one side Z1 and the other Z2 side in the first direction Z. The first magnet 81 and the third magnet 83 are each polarized and magnetized in the second direction X. The surface of the first magnet 81 that faces the first coil 71 and the third magnet 83 that faces the first coil 71. The surface to be magnetized is a different pole. Accordingly, the first magnet 81, the third magnet 83, and the first coil 71 constitute a first magnetic drive circuit that drives the movable body 3 in the second direction X. The second magnet 82 and the fourth magnet 84 are each polarized and magnetized in the third direction Y. The surface of the second magnet 82 that faces the second coil 72 and the fourth magnet 84 that faces the second coil 72. The surface to be magnetized is a different pole. Therefore, the second magnet 82, the fourth magnet 84, and the second coil 72 constitute a second magnetic drive circuit that drives the movable body 3 in the third direction Y.

  The first plate portion 860 of the first yoke 86 has an opening 865 formed at the center. Further, the first yoke 86 includes a first convex plate portion 861 extending from the portion where the opening portion 865 is formed toward the opposite sides in the second direction X, and the portion where the opening portion 865 is formed. And a second convex plate portion 862 extending toward opposite sides in the third direction Y.

  Similarly to the first plate portion 860 of the first yoke 86, the second plate portion 870 of the second yoke 87 has an opening 875 at the center. Further, the second yoke 87 includes a third convex plate portion 871 extending from the portion where the opening portion 875 is formed toward the opposite sides in the second direction X, and the portion where the opening portion 875 is formed. And a fourth convex plate portion 872 extending toward opposite sides in the third direction Y.

The second yoke 87 extends from each of the tip portions of the two third convex plate portions 871 toward the one side Z1 in the first direction Z to a position overlapping the first yoke 86, and the first yoke 86 has a first position. A pair of first connecting plate portions 873 connected to the convex plate portion 861 is provided. The second yoke 87 extends from each of the tip portions of the two fourth plate portions 874 toward the one side Z1 in the first direction Z to a position overlapping the first yoke 86, and the second yoke 87 A pair of second connecting plate portions 874 connected to the two convex plate portions 862 is provided. The first connecting plate portion 873 and the second connecting plate portion 874 are bent from the end portions of the third convex plate portion 871 and the fourth convex plate portion 872 toward the other side Z2 in the first direction Z, respectively. Therefore, the first connecting plate portion 873 is directed toward the other side Z2 in the first direction Z through the one side X1 in the second direction X and the other side X2 in the second direction X with respect to the first coil 71. It is extended. At that time, the first connection plate portion 873 extends through the recess 68 of the coil holder 60 toward the one side Z1 in the first direction Z, and the second connection plate portion 874 extends the recess 69 of the coil holder 60. It extends toward one side Z1 of the first direction Z.

  In this state, since the first connecting plate portion 873 faces the side surface of the coil holder 60 in the second direction X, it functions as a stopper when the movable body 3 moves in the second direction X by an external force or the like. Moreover, since the 2nd connection board part 874 opposes the side surface of the coil holder 60 in the 3rd direction Y, when the movable body 3 moves to the 3rd direction Y by external force etc., it functions as a stopper.

  The first connecting plate portion 873 and the second connecting plate portion 874 are each connected to the end portion of the first yoke 86 by welding. More specifically, the end of one side Z1 in the first direction Z of the first connecting plate portion 873 overlaps the side surface of the first convex plate portion 861 of the first yoke 86, and the side surface of the first convex plate portion 861. And are welded. Similarly, the end of one side Z1 in the first direction Z of the second connecting plate portion 874 is welded to the side surface of the second convex plate portion 862 so as to overlap the side surface of the second convex plate portion 862 of the first yoke 86. ing.

  One of the front end portion of the first connecting plate portion 873 and the side surface of the first convex plate portion 861 of the first yoke 86 is formed with a convex portion that is fitted and welded to the concave portion formed in the other. . In addition, a convex portion welded in a state of being fitted in a concave portion formed on the other side is provided on one of the front end portion of the second connecting plate portion 874 and the side surface of the second convex plate portion 862 of the first yoke 86. Is formed. In this embodiment, the convex portion 873a formed on the first connecting plate portion 873 of the second yoke 87 is welded in a state where the convex portion 873a is fitted in the concave portion 861a formed on the first convex plate portion 861 of the first yoke 86. The convex portion 862 a formed on the second convex plate portion 862 of the yoke 86 is welded in a state of fitting into the concave portion 874 a formed on the second connecting plate portion 874 of the second yoke 87.

  According to such a configuration, since it is only necessary to perform welding on one side Z1 in the first direction Z, the movable body 3 can be easily manufactured.

(Configuration of output member 30 of movable body 3)
FIG. 11 is an exploded perspective view of the movable body 3 shown in FIG. As shown in FIG. 11, in addition to the first yoke 86, the second yoke 87, the first magnet 81, and the second magnet 82, the movable body 3 extends to one side Z1 in the first direction Z and extends to the first side Z1. The output member 30 protrudes outward from the support body 2 on one side Z1 in the direction. As shown in FIGS. 2, 3, 4, 5, and 11, the output member 30 includes a shaft portion 31 that extends in the first direction Z and one side Z1 of the shaft portion 31 in the first direction Z. It has a plate-like first facing portion 32 that extends from the end portion and faces the first outer surface 21 located on one side Z1 in the first direction Z of the support 2. Furthermore, the movable body 3 has a bearing portion 33 that supports the shaft portion 31 so as to be movable in the first direction Z.

  In the output member 30, the shaft portion 31 and the first facing portion 32 are configured by separate members. The shaft portion 31 includes a cylindrical portion 311 extending in the first direction Z and an annular flange portion 312 having a diameter increased at an end portion on one side Z1 of the cylindrical portion 331 in the first direction Z. Therefore, the screw 39 is fixed from the one side Z1 in the first direction Z to the hole 325 of the first facing portion 32 and the hole 315 of the shaft portion 31 with the first facing portion 32 superimposed on the shaft portion 31. The shaft portion 31 and the first facing portion 32 are connected. In the flange portion 312 of the shaft portion 31, a plurality of convex portions 313 are formed around the hole 315, and in the first facing portion 32, a plurality of holes 326 are formed around the hole 325. The convex portion 313 of the shaft portion 31 is fitted into the hole 326 of the first facing portion 32, and the shaft portion 31 and the first facing portion 32 are positioned.

  The bearing portion 33 is a member different from the output member 30, the first yoke 86, and the second yoke 87, and includes a cylindrical portion 331 extending in the first direction Z and one of the cylindrical portions 331 in the first direction Z. And an annular flange portion 332 having an enlarged diameter at the end of the side Z1. On the outer edge of the flange portion 332, cylindrical convex portions 333 projecting to one side Z1 in the first direction Z are formed at a plurality of locations in the circumferential direction. The outer peripheral surface of the convex portion 333 is a conical surface whose diameter is increased from the other side Z2 in the first direction Z toward the one side Z1. The convex portion 333 is fitted in each of the plurality of holes 327 formed in the first facing portion 32. Therefore, the output member 30 is prevented from rotating about the axis extending in the first direction Z with respect to the bearing portion 33.

  The bearing portion 33 is formed so that the cylindrical portion 331 passes through the opening 166 of the first cover member 16, the opening 865 of the first yoke 86, the opening 61 of the coil holder 60, and the opening 875 of the second yoke 87. Has been placed. In the other side Z2 of the first direction Z, the end of the other side Z2 of the bearing portion 33 in the first direction Z is located inside the opening 176 of the second cover member 17, and is one side Z1 of the first direction Z. The flange portion 332 overlaps the annular portion 167 of the first cover member 16 from the one side Z1 in the first direction Z with a predetermined gap.

  In this state, the outer peripheral surface of the bearing portion 33 is in contact with the inner surface of the opening portion 865 of the first yoke 86 and the inner surface of the opening portion 875 of the second yoke 87, but the opening portion 166 of the first cover member 16. , The inner surface of the opening 61 of the coil holder 60, and the inner surface of the opening 176 of the second cover member 17 are not in contact with each other.

  A plurality of first ribs 336 and second ribs 337 extending in the first direction Z are formed on the outer peripheral surface of the bearing portion 33, and the first ribs 336 are formed in the first direction Z from the second ribs 337. Extends to the other side Z2. The first rib 336 contacts the edge of the opening 875 of the second yoke 87 from the one side Z1 in the first direction Z, while the second rib 337 is formed on the edge of the opening 865 of the first yoke 86. It fits into the notch 867. A claw 337a projecting radially outward is formed at the end of the second rib Z2 in the first direction Z on the other side Z2, and the claw 337a is first on the edge of the opening 865 of the first yoke 86. It catches from the other side Z2 in the direction Z. Therefore, in the movable body 3, the bearing portion 33 is fixed in the first direction Z, the second direction X, and the third direction Y by the first yoke 86 and the second yoke 87 and is also fixed in the circumferential direction.

  Between the support body 2 and the output member 30, the 1st elastic support part 41 urged | biased toward the one side Z1 of the 1st direction Z is formed, and the 1st elastic support part 41 is the output member 30. Is supported so as to be movable in the second direction X and the third direction Y. The first elastic support portion 41 is provided between the first facing portion 32 of the output member 30 and the first outer surface 21 of the support body 2. More specifically, the first cover member 16 includes four first housings that are open at positions adjacent to the concave portion 163 on the corner side on each line connecting the four corners of the first outer surface 21 and the opening 166. A hole 26 is formed, and a first elastic support portion 41 described below with reference to FIG. 12 is configured using each of the four first accommodation holes 26.

(Configuration example of the first elastic support portion 41)
FIG. 12 is an exploded perspective view showing a configuration example of the first elastic support portion 41 shown in FIG. The first elastic support portion 41 shown in FIG. 12 has a first ball 411 accommodated in the first accommodation hole 26 opened at the first outer surface 21 of the support body 2 shown in FIG. A first spring 412 that urges one ball 411 toward one side Z1 in the first direction Z. The first ball 411 is urged by the first spring 412 to be a first opposing portion of the output member 30. 32 from the other side Z2 in the first direction Z. In this embodiment, a first ball holder 414 that rotatably supports the first ball 411 from the other side Z2 in the first direction Z is disposed inside the first accommodation hole 26 so as to be movable in the first direction Z. The first spring 412 biases the first ball 411 toward the one side Z1 in the first direction Z via the first ball holder 414. In this embodiment, the first spring 412 is a coil spring.

  The first ball holder 414 is a cylindrical member that can accommodate the first ball 411 on the inner side, and has a groove 415 extending in the first direction Z and a convex portion 416 protruding radially outward on the outer peripheral surface. Are formed at a plurality of locations in the circumferential direction. In this embodiment, three grooves 415 are formed at equiangular intervals, and the protrusions 416 are formed at positions shifted by an angle of 180 ° in the circumferential direction. Further, the first ball holder 414 includes a first ball retaining portion 413 that prevents the first ball 411 from slipping out from the inside of the first ball holder 414 to the one side Z1 in the first direction Z.

  The first ball retaining portion 413 is configured by a hook member 413s, and the hook member 413s includes a ring portion 413a and a plurality of claws 413c extending from the ring portion 413a to the other side Z2 in the first direction Z. And. Accordingly, after the first ball 411 is accommodated inside the first ball holder 414 and then the hook member 413 s is overlapped on the first ball holder 414 from the one side Z1 in the first direction Z, the claw 413 c of the hook member 413 s becomes the groove 415. And extending to the other side Z <b> 2 in the first direction Z, the tip end portion engages with a stepped portion 417 formed at the end portion of the groove 415, and the hook member 413 s is fixed to the first ball holder 414. In this state, the first ball 411 is such that the convex portion 413b of the annular portion 413a of the hook member 413s abuts from the one side Z1 in the first direction Z, so that the first ball 411 is partially a first ball holder 414. Is prevented from coming off the first ball holder 414 in a state of protruding from the first ball holder.

  Next, as shown in FIG. 6, the first spring 412 and the first ball holder 414 are sequentially accommodated in the first accommodation hole 26. In this embodiment, since the notch 261 is formed in the first accommodation hole 26, the first ball holder 414 is inserted into the first accommodation hole so that the convex portion 416 of the first ball holder 414 passes through the notch 261. 26, after the first ball holder 414 is rotated, the convex portion 416 enters a notch (not shown) formed inside the first accommodation hole 26 and from the other side Z2 in the first direction Z. Engage. Thus, since the first ball holder retaining portion 418 using the convex portion 416 is configured, the first ball holder 414 may come out from the first accommodation hole 26 to the one side Z1 in the first direction Z. Absent.

(Configuration of the restriction unit 35)
In the actuator 1 of the present embodiment, the movable range of the output member 30 to the other side Z2 in the first direction Z is such that when the output member 30 moves to the other side Z2 in the first direction Z, the output member 30 is It is defined by contacting a plurality of convex portions 211 formed on the first outer surface 21. On the other hand, the movable range of the output member 30 toward the one side Z1 in the first direction Z is defined by a restricting portion 35 described below.

  As shown in FIG. 2, FIG. 5 and FIG. 11, when configuring the restricting portion 35 for the output member 30, the support 2 is disposed at the end of the shaft portion 31 of the output member 30 on the other side Z2 in the first direction Z. A plate-like second facing portion 36 facing the other side Z2 in the first direction Z is provided on the second outer surface 22 (the surface on the other side Z2 in the first direction Z of the second cover member 17).

  In this embodiment, the second facing portion 36 is a member separate from the shaft portion 31 and includes a square plate portion 351 and a cylindrical portion 352 formed at the center of the plate portion 351. Therefore, in the state where the second facing portion 36 is overlapped with the shaft portion 31 from the other side Z2 in the first direction Z and the shaft portion 31 is fitted inside the cylindrical portion 352, the hole of the plate portion 351 and the shaft portion 31 The shaft 38 is connected to the second facing portion 36 by fixing the screw 38 from the other side Z2 in the first direction Z to the hole 317.

  Further, the restricting portion 35 is provided with a second elastic support portion 42 that urges the second facing portion 36 toward the other side Z2 in the first direction Z between the second facing portion 36 and the support body 2. The second elastic support portion 42 supports the second facing portion 36 so as to be movable in the second direction X and the third direction Y.

(Configuration of the second elastic support portion 42)
The second elastic support portion 42 is substantially the same as the structure in which the constituent members of the first elastic support portion 41 described with reference to FIG. 12 are arranged symmetrically in the first direction Z. Therefore, in FIG. 12, the components of the second elastic support portion 42 are shown in parentheses.

  More specifically, as shown in FIG. 2, the second elastic support portion 42 includes a second ball 421 housed in a second housing hole 27 that opens at the second outer surface 22 of the support body 2, and a second housing. A second spring 422 that biases the second ball 421 toward the other side Z2 in the first direction Z in the hole 27 is provided, and the second ball 421 is biased by the second spring 422 and output member 30. Is in contact with the second facing portion 36 from one side Z1 in the first direction Z. In this embodiment, a second ball holder 424 that rotatably supports the second ball 421 from one side Z1 in the first direction Z is disposed inside the second accommodation hole 27 so as to be movable in the first direction Z. The second spring 422 biases the second ball 421 toward the other side Z2 in the first direction Z via the second ball holder 424. In this embodiment, the second spring 422 is a coil spring.

  As shown in FIG. 12, the second ball holder 424 is a cylindrical member that can accommodate the second ball 421 on the inner side, and the outer peripheral surface has a groove 425 extending in the first direction Z and a radial direction. Convex portions 426 projecting outward are formed at a plurality of locations in the circumferential direction. Further, the second ball holder 424 includes a second ball retaining portion 423 that prevents the second ball 421 from slipping out from the inside of the second ball holder 424 to the other side Z2 in the first direction Z. Since the second ball retaining portion 423 has the same configuration as the first ball retaining portion 413, such as a hook member 423s, the description thereof is omitted. Further, the second ball holder 424 has the same configuration as the first ball holder 414, such as the second ball holder retaining portion 428 configured by using the convex portion 426 of the second ball holder 424. Those descriptions are omitted.

  The force with which the second elastic support portion 42 configured in this way urges the second facing portion 36 of the output member 30 toward the other side Z2 in the first direction Z is that the first elastic support portion 41 is the first of the output member 30. The force is smaller than the force that biases the facing portion 32 toward the one side Z1 in the first direction Z. Therefore, the number of second elastic support portions 42 may be smaller than the number of first elastic support portions 41. For example, the aspect in which the second elastic support portion 42 is provided only at one central portion of the second facing portion 36 of the output member 30 may be employed.

(Configuration of viscoelastic member 9)
As shown in FIGS. 2 and 6, a viscoelastic member 9 is disposed at a position where the support body 2 and the movable body 3 face each other in the first direction Z, and the movable body 3 is interposed via the viscoelastic member 9. The support 2 is movably supported. In this embodiment, as the viscoelastic member 9, the first viscoelastic member 91 is disposed at a position where the first yoke 86 of the movable body 3 and the first cover member 16 of the support body 2 face each other in the first direction Z. A second viscoelastic member 92 is disposed at a location where the second yoke 87 of the body 3 and the second cover member 17 of the support 2 face each other in the first direction Z. More specifically, the first viscoelastic member 91 includes two first convex plate portions 861 and two second convex plate portions 862 of the first yoke 86 and an end plate portion 161 of the first cover member 16. The second viscoelastic member 92 is disposed at each of the four opposing positions, and the second cover member 17 is opposed to the two third convex plate portions 871 and two fourth convex plate portions 872 of the second yoke 87. It is arranged at each of the four locations. The second viscoelastic member 92 is located inside the opening 180 formed in the wiring board 18.

  Here, the first viscoelastic member 91 is disposed in a compressed state in the first direction Z between the first yoke 86 and the first cover member 16, and the second viscoelastic member 92 is the second yoke 87. And the second cover member 17 are arranged in a compressed state in the first direction Z. The first viscoelastic member 91 is bonded to each of the surface in contact with the first yoke 86 and the surface in contact with the first cover member 16, and the second viscoelastic member 92 is a surface in contact with the second yoke 87. , And a surface that contacts the second cover member 17. As shown in FIG. 6, the region where the second viscoelastic member 92 is disposed in the second cover member 17 is a recess 179, and the first viscoelastic member 91 is disposed in the first cover member 16. The area is a recess (not shown).

  Viscoelasticity is a property that combines both viscosity and elasticity, and is a property that is prominently seen in polymer materials such as gel-like members, plastics, and rubbers. Therefore, various gel-like members can be used as the viscoelastic member 9. As the viscoelastic member 9, natural rubber, diene rubber (for example, styrene / butadiene rubber, isoprene rubber, butadiene rubber), chloroprene rubber, acrylonitrile / butadiene rubber, etc., non-diene rubber (for example, butyl rubber, ethylene Propylene rubber, ethylene / propylene / diene rubber, urethane rubber, silicone rubber, fluorine rubber, etc.), various rubber materials such as thermoplastic elastomers, and modified materials thereof may be used. In this embodiment, the viscoelastic member 9 (the first viscoelastic member 91 and the second viscoelastic member 92) is a silicone gel having a penetration of 10 degrees to 110 degrees. The penetration is defined by JIS-K-2207 or JIS-K-2220, and the smaller this value is, the harder it is. The viscoelastic member 9 has linear or non-linear expansion / contraction characteristics depending on the expansion / contraction direction. For example, when the viscoelastic member 9 is pressed in the thickness direction (axial direction) and compressively deformed, the viscoelastic member 9 has an expansion / contraction characteristic in which a nonlinear component (spring coefficient) is larger than a linear component (spring coefficient). On the other hand, when stretched by being pulled in the thickness direction (axial direction), it has an expansion / contraction characteristic in which a linear component (spring coefficient) is larger than a non-linear component (spring coefficient). On the other hand, when the viscoelastic member 9 is deformed in the direction (shear direction) intersecting the thickness direction (axial direction) as in this embodiment, it is a deformation in the direction of being pulled and extended regardless of the direction of movement. For this reason, the linear component (spring coefficient) is larger than the nonlinear component (spring coefficient). Therefore, in the viscoelastic member 9, the spring force according to the movement direction is constant. Therefore, by using the spring element in the shear direction of the viscoelastic member 9 as in this embodiment, the reproducibility of vibration acceleration with respect to the input signal can be improved, so that vibration can be realized with a subtle nuance. it can.

(basic action)
In the actuator 1 of the present embodiment, the movable body 3 includes the output member 30 that protrudes outward from the first outer surface 21 of the support body 2, so that the user can access the first facing portion 32 of the output member 30. If the magnetic drive circuit 6 is operated in a state of touching, the user can feel vibration through the first facing portion 32 of the output member 30.

For example, when alternating current is applied to the first coil 71, the movable body 3 vibrates in the second direction X, so that the center of gravity of the actuator 1 varies in the second direction X. For this reason, the user can experience the vibration in the second direction X. At that time, the AC waveform applied to the first coil 71 is adjusted, the acceleration at which the movable body 3 moves to one side X1 in the second direction X, and the acceleration at which the movable body 3 moves to the other side X2 in the second direction X. , The user can experience vibration having directionality in the second direction X. Further, when alternating current is applied to the second coil 72, the movable body 3 vibrates in the third direction Y, so that the center of gravity of the actuator 1 varies in the third direction Y. For this reason, the user can experience the vibration in the third direction Y. At that time, the AC waveform applied to the second coil 72 is adjusted, the acceleration at which the movable body 3 moves to one side Y1 in the third direction Y, and the movable body 3 moves to the other side Y2 in the third direction Y. If the acceleration is different, the user can experience vibration having directionality in the third direction Y. The first coil 7
If the energization to 1 and the energization to the second coil 72 are combined, the user can obtain a bodily sensation that combines the vibration in the second direction X and the vibration in the third direction Y.

(Main effects of this form)
As described above, in the actuator 1 of this embodiment, when the movable body 3 is vibrated in the second direction X and the third direction Y by the magnetic drive circuit 6, the output member 30 provided on the movable body 3 is moved in the second direction X. And vibrates in the third direction Y. Here, since the output member 30 protrudes outward from the support body 2, the user can directly touch the output member 30. Therefore, it is possible to cause the user to experience a stronger vibration than when the user feels the vibration of the movable body 3 via the support 2. Further, the output member 30 has a first facing portion 32 that extends from the end portion of the shaft portion 31 that extends in the first direction Z and faces the first outer surface 21 of the support 2. For this reason, the user can touch the 1st opposing part 32 of the output member 30, and can experience the in-plane vibration of the 1st opposing part 32. FIG.

  The movable body 3 includes a bearing portion 33 that supports the shaft portion 31 so as to be movable in the first direction Z, and a first elastic support portion 41 that biases the output member 30 to one side Z2 in the first direction Z. Therefore, the pressure applied to the other side Z2 in the first direction Z when the user touches the first facing portion 32 is absorbed by the output member 30 escaping to the other side Z2 in the first direction Z. Therefore, even when the user presses the first facing portion 32, the user can feel the vibration. Moreover, since the 1st elastic support part 41 generate | occur | produces a drag when a user pushes the 1st opposing part 32, the movable body 3 is large and does not displace to the other side Z2 of the 1st direction Z. Therefore, it is difficult for the first coil 71 and the first magnet 81 to come into contact with each other.

  In addition, since the restricting portion 35 that restricts the movable range of the output member 30 in the first direction Z to the one side Z1 is provided, the first elastic support portion 41 causes the output member 30 to be moved to the one side Z1 in the first direction Z. The output member 30 does not move from the set position to the one side Z1 in the first direction Z even when it is biased. Even in this case, since the first elastic support portion 41 supports the output member 30 so as to be movable in the second direction X and the third direction Y, the vibration of the output member 30 in the second direction X and the third direction Y is also suppressed. There is no hindrance.

  Moreover, since the 1st elastic support part 41 is provided between the 1st opposing part 32 and the 1st outer surface 21, it is appropriate in the wide range between the 1st opposing part 32 and the 1st outer surface 21. The 1st elastic support part 41 can be provided in a certain place. For example, a plurality of first elastic support portions 41 are provided around the shaft portion 31. For this reason, the 1st opposing part 32 cannot tilt easily.

  The first elastic support portion 41 includes a first accommodation hole 26 that opens at the first outer surface 21 of the support body 2, a first ball 411 that is accommodated in the first accommodation hole 26, and the first accommodation hole 26. A first spring 412 that urges the first ball 411 toward one side Z1 in the first direction Z; For this reason, even when the first elastic support portion 41 is provided, it is difficult to generate an extra space in the first direction Z. Further, since the first spring 412 is a coil spring, it is suitable for providing the first elastic support portion 41 using the first accommodation hole 26.

  Further, a cylindrical first ball holder 414 that supports the first ball 411 accommodated inside from the other side Z2 in the first direction Z is moved in the first direction Z inside the first accommodation hole 26. The first spring 412 biases the first ball 411 toward the one side Z1 in the first direction Z via the first ball holder 414. For this reason, since the first spring 412 does not directly contact the first ball 411, it is possible to avoid applying an excessive sliding load from the first spring 412 to the first ball 411.

Even in this case, between the first ball holder 414 and the support 2, the first ball holder detachment that prevents the first ball holder 414 from escaping from the first accommodation hole 26 to the one side Z <b> 1 in the first direction Z is achieved. A stop 418 is provided. For this reason, when the actuator 1 is assembled, the first ball holder 414 is pulled out from the first accommodation hole 26 to the one side Z1 in the first direction Z by the urging force of the first spring 412 without providing the output member 30. Therefore, it is easy to assemble the actuator 1.

  In addition, the first ball holder 414 is provided with a first ball retaining portion 413 that prevents the first ball 411 from slipping out from the first ball holder 414 to the one side Z1 in the first direction Z. For this reason, when the actuator 1 is assembled, the first ball 411 can be prevented from coming off from the first ball holder 414 to the one side Z1 in the first direction Z, so that the actuator 1 can be easily assembled.

  Further, the restricting portion 35 extends from the end portion on the other side Z2 in the first direction Z of the shaft portion 31 and faces the second outer surface 22 located on the other side Z2 in the first direction Z of the support 2. A second elastic support portion 42 that urges the second facing portion 36 toward the other side Z2 in the first direction Z between the output member 30 and the support 2. Is provided. For this reason, no gap is generated between the first elastic support portion 41 and the first facing portion 32 of the output member 30. For this reason, the abnormal noise resulting from the rattling between the 1st elastic support part 41 and the 1st opposing part 32 of the output member 30 does not generate | occur | produce. Further, since the first ball 411 used for the first elastic support portion 41 is elastically in contact with the first opposing portion 32 by the urging force of the second elastic support portion 42, the first ball 411 is prevented from spinning around. . Accordingly, it is possible to prevent the generation of abnormal noise caused by the idle rotation of the first ball 411. Even in this case, since the second elastic support portion 42 supports the second facing portion 36 of the output member 30 so as to be movable in the second direction X and the third direction Y, the second direction X and the second direction of the output member 30 are supported. The vibration in the three directions Y is not hindered.

  The basic structure of the second elastic support portion 42 is the same as that of the first elastic support portion 41, and the second accommodation hole 27 that opens at the second outer surface 22 of the support 2 and the second accommodation hole 27 are provided. The second ball 421 accommodated and the second spring 422 that biases the second ball 421 toward the other side Z2 in the first direction Z in the second accommodation hole 27 are provided. For this reason, even when the second elastic support portion 42 is provided, it is difficult to generate an extra space in the first direction Z. Further, since the second spring 422 is a coil spring, it is suitable for providing the second elastic support portion 42 using the second accommodation hole 27.

  Further, inside the second accommodation hole 27, a cylindrical second ball holder 424 that supports the second ball 421 accommodated inside from the one side Z1 in the first direction Z so as to be rotatable moves in the first direction Z. The second spring 422 urges the second ball 421 toward the other side Z2 in the first direction Z via the second ball holder 424. For this reason, since the second spring 422 does not directly contact the second ball 421, it is possible to avoid applying an excessive sliding load from the second spring 422 to the second ball 421. Even in this case, the second ball holder 424 is prevented from coming out between the second ball holder 424 and the support 2 to prevent the second ball holder 424 from coming out from the second accommodation hole 27 to the one side Z1 in the first direction Z. A stop 428 is provided. Therefore, when the actuator 1 is assembled, the second ball holder 424 is moved from the second accommodation hole 27 to the other side Z2 in the first direction Z by the biasing force of the second spring 422 without providing the second facing portion 36. Since it can be avoided to detach, the actuator 1 can be easily assembled.

  Further, the second ball holder 424 is provided with a second ball retaining portion 423 that prevents the second ball 421 from slipping out from the second ball holder 424 to the other side Z2 in the first direction Z. For this reason, when the actuator 1 is assembled, the second ball 421 can be prevented from coming off from the second ball holder 424 to the other side Z2 in the first direction Z, so that the actuator 1 can be easily assembled.

  In addition, a viscoelastic member 9 that contacts the support 2 and the movable body 3 in the first direction Z is provided at a portion where the support 2 and the movable body 3 face each other in the first direction Z. Resonance at the time of vibration can be suppressed by the viscoelastic member 9. At this time, since the viscoelastic member 9 is deformed in the shear direction, the viscoelastic member 9 has a deformation characteristic in which a linear component is larger than a non-linear component. Therefore, in the viscoelastic member 9, the spring force according to the movement direction is constant. Therefore, by using the spring element in the shear direction of the viscoelastic member 9, the reproducibility of the vibration acceleration with respect to the input signal can be improved, so that the vibration can be realized with a delicate nuance. Since the viscoelastic member 9 is provided in a compressed state in the first direction Z, the distance in the first direction Z between the support 2 and the movable body 3 at the position where the viscoelastic member 9 is disposed. Even when there is a variation, the viscoelastic member 9 is always in contact with the support 2 and the movable body 3. For this reason, the viscoelastic member 9 can reliably follow the vibration of the movable body 3 and can effectively prevent the resonance of the movable body 3.

  In addition, as the viscoelastic member 9, a first viscoelastic member 91 disposed between the first yoke 86 of the movable body 3 and the first cover member 16 of the support 2, and a second yoke 87 of the movable body 3, The 2nd viscoelastic member 92 arrange | positioned between the 2nd cover members 17 of the support body 2 is arrange | positioned. For this reason, when the movable body 3 is displaced to the one side Z1 in the first direction Z, the thickness of the first viscoelastic member 91 is decreased, while the thickness of the second viscoelastic member 92 is increased. On the other hand, when the movable body 3 is displaced to the other side Z2 in the first direction Z, the thickness of the second viscoelastic member 92 decreases while the thickness of the first viscoelastic member 91 increases. . Therefore, regardless of the position of the movable body 3 in the first direction Z, the viscoelastic member 9 (the first viscoelastic member 91 and the second viscoelastic member 92) exhibits a substantially constant viscoelastic force. Can be effectively prevented.

(Configuration example 2 of the first elastic support portion 41)
FIG. 13 is an exploded perspective view showing a configuration example 2 of the first elastic support portion 41 shown in FIG. 6. In the first elastic support portion 41 shown in FIG. 12, the first ball holder 414 supports the first ball 411 directly and rotatably from the other side Z2 in the first direction Z. As shown, a support member 419 is provided on the inner side of the first ball holder 414 so as to rotatably support the first ball 411 at a plurality of locations in the circumferential direction from the other side Z2 in the first direction Z. Accordingly, the first spring 412 biases the first ball 411 toward the one side Z1 in the first direction Z via the first ball holder 414 and the support member 419. In this embodiment, the support member 419 includes three spheres 419a, and the support member 419 supports the first ball 411 rotatably at a plurality of locations in the circumferential direction by the three spheres 419a. Other configurations are the same as those described with reference to FIG. In such a configuration, since the surface supporting the first ball 411 is narrow, the sliding load applied to the first ball 411 can be reduced. In addition, you may employ | adopt the aspect shown in FIG. 14 also about the 2nd elastic support part 42. FIG.

(Configuration example 3 of the first elastic support portion 41)
FIG. 14 is an exploded perspective view showing a configuration example 3 of the first elastic support portion 41 shown in FIG. 6. In the first elastic support portion 41 shown in FIG. 14, the first ball 411 is disposed in the circumferential direction from the other side Z <b> 2 in the first direction Z inside the first ball holder 414 similarly to the configuration described with reference to FIG. 13. Support members 419 that are rotatably supported at a plurality of locations are provided. Accordingly, the first spring 412 biases the first ball 411 toward the one side Z1 in the first direction Z via the first ball holder 414 and the support member 419. In this embodiment, the support member 419 includes a columnar member 419b whose surface contacting the first ball 411 is tapered 419c, and the support member 419 surrounds the first ball 411 by the taper 419c of the three columnar members 419b. It is supported so that it can rotate at several points in the direction. Other configurations are the same as those described with reference to FIG. In the case of such a configuration, the sliding load applied to the first ball 411 can be reduced from the configuration described with reference to FIG. 12, similarly to the configuration described with reference to FIG. 13. Note that the embodiment shown in FIG. 13 may also be adopted for the second elastic support portion 42.

(Configuration example 4 of the first elastic support portion 41)
FIG. 15 is a cross-sectional view illustrating a configuration example 4 of the first elastic support portion 41 illustrated in FIG. 6. As a mode in which the first elastic support portion 41 supports the first ball 411 so as to be rotatable at a plurality of locations in the circumferential direction, as shown in FIG. 15, without using the first ball holder, the support 2 (first The first spring 412 and the first ball 411 are disposed in the first accommodation hole 26 of the cover member 16), and the first spring 412 urges the first ball 411 directly toward the first facing portion 32 of the output member 30. You may employ | adopt the aspect to do. The first spring 412 is not limited to a coil spring, and a plate spring 412a can be used. The first spring 412 rotates the first ball 411 with a conical surface or a pyramid surface formed at the bottom of the plate spring 412a. Support as possible. Also in this case, a first ball retaining portion 413 that prevents the first ball 411 from slipping out from the first accommodation hole 26 to the one side Z1 in the first direction Z is configured. In this embodiment, the first ball retaining portion 413 is configured by a hook member 413t similar to the hook member 413s shown in FIG. The hook member 413t includes an annular portion 413a that contacts the first ball 411, and a plurality of claws 413d that extend from the annular portion 413a to the other side Z2 in the first direction Z. It engages with an engaging projection (not shown) formed on the inner wall of the hole 168 inside the hole 168 formed in the body 2 (first cover member 16).

  When the configuration shown in FIG. 15 is applied to the second elastic support portion 42, the second spring 422 and the second ball 421 are disposed in the second accommodation hole 27 of the support body 2 (second cover member 17). The two springs 422 urge the second ball 421 directly toward the second facing portion 36 of the restricting portion 35. The second spring 422 (plate spring 422a) rotatably supports the second ball 421 with a conical surface or a pyramid surface formed at the bottom of the plate spring 422a. Also in this case, a second ball retaining portion 423 that prevents the second ball 421 from slipping out from the second accommodation hole 27 to the other side Z2 in the first direction Z is configured. The second ball retaining portion 423 is configured by a hook member 423t similar to the hook member 413t. The hook member 423t includes an annular portion 423b that contacts the second ball 421, and a plurality of claws 423d that extend from the annular portion 423b to one side Z1 in the first direction Z. The engagement protrusion (not shown) formed on the inner wall of the hole 178 is engaged inside the hole 178 formed in the body 2 (second cover member 17).

(Other embodiments)
In the above embodiment, the present invention is applied to the actuator 1 in which the magnetic drive circuit 6 can drive the movable body 3 in the second direction X and the third direction Y. However, the magnetic drive circuit 6 moves the movable body 3 to the first direction. The present invention may be applied to an actuator that can be driven only in two directions X. In this case, the magnetic drive circuit 6 has the first coil 71 and at least one of the first magnet 81 and the third magnet 83.

  In the above embodiment, the first magnet 81 and the second magnet 82 are provided on both sides (one side Z1 and the other side Z2) in the first direction Z with respect to the first coil 71 and the second coil 72, respectively. For example, the present invention is applied to the case where the magnet is disposed only on one side Z1 in the first direction Z with respect to the first coil 71 and only the second yoke 87 exists on the other side Z2 in the first direction Z. May be. Alternatively, the present invention is applied to the case where the magnet is disposed only on the other side Z2 in the first direction Z with respect to the first coil 71 and only the first yoke 86 exists on the one side Z1 in the first direction Z. May be.

  In the above embodiment, the gel-like damper member is used as the viscoelastic member 9, but rubber or the like may be used as the viscoelastic member 9. Moreover, in the said embodiment, although the movable body 3 was supported by the support body 2 via the viscoelastic member 9, it can move to the support body 2 via elastic members, such as a spring. You may employ | adopt the aspect currently supported by.

  In the above embodiment, the coil is provided on the support 2 and the magnet and the yoke are provided on the movable body 3. However, the coil is provided on the movable body 3 and the magnet and the yoke are provided on the support 2. The present invention may be applied to. In the above embodiment, the present invention is applied to the actuator 1 that drives the movable body 3 in the second direction X and the third direction Y. However, the present invention is applied to the actuator 1 that drives the movable body 3 only in the second direction X. May be.

DESCRIPTION OF SYMBOLS 1 ... Actuator, 2 ... Support body, 3 ... Movable body, 6 ... Magnetic drive circuit, 7 ... Coil, 8 ... Magnet, 9 ... Viscoelastic member, 11 ... Cover, 16 ... 1st cover member, 17 ... 2nd cover Member, 21 ... first outer surface, 22 ... second outer surface, 26 ... first housing hole, 27 ... second housing hole, 30 ... output member, 31 ... shaft portion, 32 ... first facing portion, 33 ... bearing portion, 35 ... restricting portion, 36 ... second opposing portion, 41 ... first elastic support portion, 42 ... second elastic support portion, 60 ... coil holder, 66 ... first coil holding hole, 67 ... second coil holding hole, 71 ... 1st coil, 72 ... 2nd coil, 81 ... 1st magnet, 82 ... 2nd magnet, 83 ... 3rd magnet, 84 ... 4th magnet, 86 ... 1st yoke, 87 ... 2nd yoke, 91 ... 1st DESCRIPTION OF SYMBOLS 1 viscoelastic member, 92 ... 2nd viscoelastic member, 161 ... end plate part, 411 ... 1st ball | bowl, 412 ... 1st spring, 4 3 ... first ball retaining portion, 413s, 423s ... hook member, 414 ... first ball holder, 418 ... first ball holder retaining portion, 419 ... support member, 419a ... sphere, 419b ... columnar member, 419c ... taper 421, second ball, 422, second spring, 423, second ball retaining portion, 424, second ball holder, 428, second ball holder retaining portion, 860, first plate portion, 870, second. Plate part, 873 ... 1st connecting plate part, 874 ... 2nd connecting plate part, X ... 2nd direction, Y ... 3rd direction, Z ... 1st direction

Claims (17)

A support;
A movable body supported by the support body in a movable manner and covered with the support body;
A coil provided on one side member of the support body and the movable body, and a magnet provided on the other side member of the support body and the movable body and facing the coil in a first direction, A magnetic drive circuit that vibrates a movable body in a second direction intersecting the first direction;
Have
The actuator is characterized in that the movable body has an output member protruding outward from the support.   The output member extends from a shaft portion extending in the first direction and an end portion on one side of the shaft portion in the first direction, and is positioned on one side of the support in the first direction. The actuator according to claim 1, further comprising a first facing portion facing the first outer surface. The movable body has a bearing portion that supports the shaft portion so as to be movable in the first direction,
Between the support and the output member, a first elasticity that supports the output member so as to be movable in the second direction and biases the output member toward one side in the first direction. The actuator according to claim 2, further comprising: a support portion; and a restriction portion that restricts a movable range of the output member toward the one side in the first direction.   The actuator according to claim 3, wherein the first elastic support portion is provided between the first facing portion and the first outer surface.   The first elastic support portion includes a first accommodation hole that opens on the first outer surface of the support body, and a first accommodation hole that is accommodated in the first accommodation hole and contacts the first facing portion from the other side in the first direction. 5. The actuator according to claim 4, further comprising: one ball and a first spring that biases the first ball toward one side in the first direction in the first accommodation hole. Inside the first accommodation hole, a cylindrical first ball holder that rotatably supports the first ball from the other side of the first direction is disposed so as to be movable in the first direction,
The actuator according to claim 5, wherein the first spring biases the first ball toward one side in the first direction via the first ball holder. Inside the first ball holder is provided a support member that rotatably supports the first ball at a plurality of locations in the circumferential direction from the other side of the first direction,
The actuator according to claim 6, wherein the first spring biases the first ball toward one side in the first direction via the first ball holder and the support member.   A first ball holder retaining portion is provided between the first ball holder and the support to prevent the first ball holder from slipping out from the first accommodation hole to one side in the first direction. The actuator according to claim 6, wherein the actuator is provided.   The first ball holder is provided with a first ball retaining portion that prevents the first ball from slipping out from the first ball holder to one side in the first direction. The actuator according to any one of 6 to 8.   The actuator according to any one of claims 5 to 9, wherein the first spring is a coil spring.   The actuator according to any one of claims 3 to 8, wherein a plurality of the first elastic support portions are provided around the shaft portion.   The restricting portion extends from an end portion on the other side in the first direction of the shaft portion, and a second facing portion facing a second outer surface located on the other side in the first direction of the support body; The second opposing portion is supported between the second outer surface and the second opposing portion so as to be movable in the second direction, and the second opposing portion is directed to the other side in the first direction. The actuator according to any one of claims 3 to 9, further comprising a second elastic support portion for biasing.   The second elastic support portion includes a second accommodation hole that opens on the second outer surface of the support body, and a second accommodation hole that is accommodated in the second accommodation hole and contacts the second facing portion from one side in the first direction. 13. The actuator according to claim 12, comprising two balls and a second spring that biases the second ball toward the other side in the first direction in the second accommodation hole. A cylindrical second ball holder that rotatably supports the second ball accommodated inside from the one side in the first direction is disposed inside the second accommodation hole so as to be movable in the first direction. ,
The actuator according to claim 13, wherein the second spring biases the second ball toward the other side in the first direction via the second ball holder. The magnetic drive circuit vibrates the movable body in a third direction intersecting the first direction and the second direction,
The actuator according to any one of claims 3 to 14, wherein the first elastic support portion supports the output member so as to be movable in the second direction and the third direction.   The viscoelastic member which contacts the said support body and the said movable body in the said 1st direction is provided in the part which the said support body and the said movable body oppose in the said 1st direction. 16. The actuator according to any one of items 15 to 15.   The actuator according to claim 16, wherein the viscoelastic member is provided in a compressed state in the first direction.

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