JP2019013096A - Actuator - Google Patents

Abstract

To provide an actuator capable of raising strength of an abutted part for regulating a movable range of a movable body.SOLUTION: In an actuator 1, a first abutted part 118 and a second abutted part 119 for regulating a movable range when a movable body 3 moves in a second direction X are constituted of: first wall parts (a first wall part 161 of a first cover member 16, a first wall part 61 of a holder 60, and a first wall part 171 of a second cover member 17) with wide width dimensions; and second wall parts (a second wall part 162 of the first cover member 16, a second wall part 62 of the holder 60, and a second wall part 172 of the second cover member 17). Thus, since strength of the first abutted part 118 and the second abutted part 119 is large, the first abutted part 118 and the second abutted part 119 are not easily damaged even when the movable body 3 sharply moves in the second direction X due to an impact in falling, etc.SELECTED DRAWING: Figure 2

Description

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

  Actuator that vibrates a movable body in a second direction intersecting the first direction with respect to a support by a magnetic drive circuit having a coil and a magnet opposed in the first direction as a device that generates vibration by a magnetic drive mechanism Has been proposed (see Patent Document 1). In the actuator described in Patent Literature 1, a plurality of prisms are formed on one of the first cover member and the second cover member, and the prisms are moved when the movable body moves to one side in the second direction. The movable body is brought into contact with the movable body to restrict the movable range of the movable body in one direction in the second direction. In addition, the prism portion abuts on the movable body when the movable body moves to the other side in the second direction, and restricts the movable range of the movable body to the one side in the second direction.

JP 2006-127789 A

  However, when the prism portion formed on the cover member is used as a contacted portion that restricts the movable range of the movable body, as in the actuator described in Patent Document 1, the strength of the prismatic portion (contacted portion) is small. For this reason, there is a problem in that the prismatic part is damaged when the movable body suddenly moves due to an impact or the like when dropped.

  In view of the above problems, an object of the present invention is to provide an actuator that can increase the strength of a contacted portion that regulates the movable range of a movable body.

  In order to solve the above problems, an actuator to which the present invention is applied includes a support body, a movable body, a connection body connected to the movable body and the support body, and provided with at least one of elasticity and viscoelasticity, A magnetic drive circuit that includes a coil and a first magnet facing the coil in a first direction, and moves the movable body relative to the support in a second direction that intersects the first direction. The support includes a first wall portion facing the movable body on one side in the second direction, a second wall portion facing the movable body on the other side in the second direction, and the movable body. A third wall portion facing on one side in a third direction intersecting the first direction and the second direction, a fourth wall portion facing the movable body on the other side in the third direction, And the width of the first wall portion and the second wall portion in the second direction is The first wall portion is in contact with the movable body when the movable body moves to one side in the second direction, and is wider than the width of the third wall portion and the fourth wall portion in the third direction. A first contacted portion for restricting a movable range of the movable body to the one side in the second direction, wherein the second wall portion is configured to move the movable body to the other side in the second direction; A second abutted portion is provided, which is in contact with the movable body and regulates a movable range of the movable body to the other side in the second direction.

In the present invention, the support body comes into contact with the movable body when the movable body moves in the second direction between the first wall portion and the second wall portion facing the movable body on one side and the other side in the second direction. It is used as a contacted part (first contacted part and second contacted part) that regulates the movable range of the movable body in the second direction. Here, the width in the second direction of the first wall portion and the second wall portion is the width in the third direction of the third wall portion and the fourth wall portion facing the movable body on one side and the other side in the third direction. It is wider and stronger. Therefore, even when the movable body suddenly moves in the second direction due to an impact or the like when dropped, the contacted portions (the first contacted portion and the second contacted portion) are not easily damaged.

  In the present invention, the support includes a holder holding the coil or the first magnet, a first cover member whose ends overlap each other on one side in the first direction with respect to the holder, and the holder A second cover member whose ends overlap each other on the other side in the first direction, wherein the first wall portion and the second wall portion are respectively the holder, the first cover member, and A mode in which the second cover member includes a portion that overlaps in the first direction can be employed. According to this aspect, in the first wall portion and the second wall portion, the portion where the holder, the first cover member, and the second cover member overlap in the first direction is the contacted portion (the first contacted portion and Since it can be utilized as the second contacted portion), the strength of the contacted portions (the first contacted portion and the second contacted portion) is high.

  In the present invention, the holder and the first cover member are formed with positioning projections that protrude from one side to the other and fit into positioning holes formed on the other side. It is possible to adopt a mode in which the cover member is formed with a positioning projection that protrudes from one side toward the other and fits into a positioning hole formed on the other side. According to this aspect, the holder and the first cover member can be positioned, and the holder and the second cover member can be positioned.

  In this invention, the said coil is provided in the state hold | maintained at the said holder at the said holder, the said 1st magnet is provided in the said movable body, and the said movable body is said 1st direction with respect to the said coil. A first yoke having a first plate portion facing on one side of the coil, and a second yoke having a second plate portion facing the coil on the other side in the first direction, The first magnet is fixed to one of a surface of the first plate portion facing the coil and a surface of the second plate portion facing the coil, and the first yoke is connected to the coil. A first connecting plate portion extending from the first plate portion on one side in the second direction to a position overlapping the second yoke toward the other side in the first direction and connected to the second yoke; The first direction from the first plate portion on the other side of the second direction with respect to the coil A second connecting plate portion extending to a position overlapping the second yoke toward the other side of the first connecting plate and connected to the second yoke, wherein the movable body is the first connecting plate portion. When the movable body moves to one side in two directions, the movable body abuts on the first wall portion and restricts the movable range of the movable body to the one side in the second direction. It is possible to employ a mode in which when the movable body moves to the other side in the second direction, the movable range of the movable body to the other side in the second direction is restricted by contacting the second wall portion. According to this aspect, the first magnet is fixed to one of the first plate portion and the second plate portion that face each other in the first direction in the yoke. The yoke includes the first yoke including the first plate portion and the first yoke portion. And a second yoke provided with a second plate portion. For this reason, if the first yoke and the second yoke are connected after the first magnet is fixed, a yoke in which the magnets are fixed to the surfaces facing each other in the first plate portion and the second plate portion can be manufactured. it can. Further, since the first yoke includes the first connecting plate portion and the second connecting plate portion extending from the first yoke toward the second yoke, one side in the first direction (the second yoke is located). The first connecting plate portion and the second yoke can be connected to each other, and the second connecting plate portion can be connected to the second yoke. Therefore, it is possible to efficiently manufacture a yoke in which magnets are fixed to surfaces facing each other in the first plate portion and the second plate portion. Moreover, since the stopper which controls the movable range of the 2nd direction of a movable body can be comprised using a 1st connection board part and a 2nd connection board part, simplification of a structure can be achieved.

In the present invention, it is possible to adopt a mode in which the first connecting plate portion and the second connecting plate portion are connected to the second yoke by welding. According to this aspect, since the first connecting plate portion and the second connecting plate portion are firmly connected to the second yoke, the second connecting plate portion is used by using the first connecting plate portion and the second connecting plate portion. A stopper that restricts the movable range of the direction can be configured.

  In the present invention, the holder includes a first opening that penetrates the first connecting plate portion from one side to the other side in the first direction between the coil and the first wall portion, and the coil. It is possible to adopt a mode in which a second opening that allows the second connecting plate portion to penetrate from the one side in the first direction toward the other side is formed between the second wall portion and the second wall portion. According to this aspect, the first connecting plate portion and the second connecting plate portion can be extended to a position overlapping the second yoke with a simple configuration.

  In the present invention, the magnetic drive circuit includes a second magnet fixed to the other of the surface of the first plate portion facing the coil and the surface of the second plate portion facing the coil. Can be adopted. According to this aspect, the power of the magnetic drive circuit can be increased. Even in this case, after the first magnet and the second magnet are fixed to the first plate portion and the second plate portion, and then the first yoke and the second yoke are connected, the first plate portion and the second plate portion are mutually connected. A yoke having magnets fixed to the opposite surfaces can be manufactured.

  In the present invention, in a state where the first cover member, the first yoke, the holder, and the second yoke are overlapped in the first direction, the first cover member, the first yoke, the holder, and the second A mode in which a plurality of through holes penetrating the yoke can be employed. According to this aspect, when assembling the actuator, the first yoke, the holder, and the second yoke can be sequentially stacked in the first direction with respect to the first cover member by inserting a pin into each of the plurality of through holes. .

  In the present invention, an aspect in which a viscoelastic member is used as the connection body can be employed. In this case, an aspect in which only the viscoelastic member is used as the connection body can be employed. In the present invention, a mode in which the viscoelastic member is fixed to both the movable body and the support body can be used. In the present invention, the viscoelastic member may be a gel member. In the present invention, an embodiment in which the gel-like member is a silicone-based gel can be adopted.

  In the present invention, the viscoelastic member may employ a mode in which the support body and the movable body are disposed at positions facing each other in the first direction. 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 shearing direction of the viscoelastic member, the reproducibility of the vibration acceleration with respect to the input signal can be improved, so that vibration with a delicate nuance can be realized.

  In the present invention, the support body comes into contact with the movable body when the movable body moves in the second direction between the first wall portion and the second wall portion facing the movable body on one side and the other side in the second direction. It is used as a contacted part (first contacted part and second contacted part) that regulates the movable range of the movable body in the second direction. Here, the width in the second direction of the first wall portion and the second wall portion is the width in the third direction of the third wall portion and the fourth wall portion facing the movable body on one side and the other side in the third direction. It is wider and stronger. Therefore, even when the movable body suddenly moves in the second direction due to an impact or the like when dropped, the contacted portions (the first contacted portion and the second contacted portion) are not easily damaged.

It is a perspective view of an actuator concerning an embodiment of the present invention. It is XZ sectional drawing of the actuator shown in FIG. It is a perspective view of the state which removed the wiring board and screw shown in FIG. It is a disassembled perspective view when the actuator shown in FIG. 1 is disassembled and viewed from the other side in the first direction. It is a disassembled perspective view when the actuator shown in FIG. 1 is disassembled and viewed from one side in a first direction. FIG. 3 is an exploded perspective view of the magnetic drive circuit shown in FIG. 2. FIG. 3 is an exploded perspective view when the magnetic drive circuit shown in FIG. 2 is further finely disassembled. FIG. 3 is a plan view of a state in which a first cover member, a first yoke, a holder, and a second yoke illustrated in FIG. 2 are stacked in a first direction.

  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 includes a coil 7 and a magnet 8. Yes. In the magnetic drive circuit 6, the coil 7 is provided on the support body 2 (one side member) side, the magnet 8 is provided on the movable body 3 (other side member) side, and the magnet 8 is the support body 2. A mode in which the coil 7 is provided on the (other side member) side and the coil 7 is provided on the movable body 3 (one side member) side can be employed. In the following description, the description will focus on an aspect in which the coil 7 is provided on the support 2 side and the magnet 8 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. FIG. 2 is an XZ sectional view of the actuator 1 shown in FIG. FIG. 3 is a perspective view of a state in which the wiring board and screws shown in FIG. 1 are removed.

  As shown in FIGS. 1 and 2, the actuator 1 according to the present embodiment has a rectangular parallelepiped shape in which the dimension in the second direction X is larger than the dimension in the third direction Y as a whole. Further, as shown in FIG. 2, it has a support 2, a movable body 3 that is movably supported by the support 2, and a magnetic drive circuit 6 that moves the movable body 3 relative to the support 2. The magnetic drive circuit 6 vibrates the movable body 3 in the second direction X.

  As shown in FIGS. 1, 2 and 3, the support 2 has a cover 11 and a holder 60, and the movable body 3 and the magnetic drive circuit 6 shown in FIG. Has been. The cover 11 includes a first cover member 16 located on one side Z1 in the first direction Z, and a second cover member 17 overlapping the first cover member 16 from the other side Z2 in the first direction Z. The first cover member 16 and the second cover member 17 have a rectangular planar shape. A holder 60 having a square planar shape is disposed between the first cover member 16 and the second cover member 17, and the first cover member 16, the holder 60, and the second cover member 17 have end portions 160. , 600, 170 overlap in the first direction Z. Therefore, the outer surface side 110 of the cover 11 is constituted by the end 160 of the first cover member 16, the end 600 of the holder 60, and the end 170 of the second cover member 17.

(Configuration of the first cover member 16)
FIG. 4 is an exploded perspective view when the actuator 1 shown in FIG. 1 is disassembled and viewed from the other side Z2 in the first direction Z. As shown in FIGS. 2 and 4, the first cover member 16 is formed with a rectangular recess 165 that opens toward the other side Z <b> 2 in the first direction Z. Two recesses 166 and 167 arranged in the second direction X are formed at the bottom of the recess 165. A through hole 16 a is formed at a diagonal position of the recess 165. That is, in the recess 165, the corner portion is located on one side X1 in the second direction X and the other side Y2 in the third direction Y, and the other side X2 in the second direction X and one side Y1 in the third direction Y. Through holes 16a are formed in the corner portions. In addition, through holes 16b are formed at both ends of the recesses 166 and 167 in the third direction Y.

  In the first cover member 16, the concave portion 165 includes a first wall portion 161 located on one side X1 in the second direction X, a second wall portion 162 located on the other side X2 in the second direction X, and a third direction. It is surrounded by a third wall portion 163 located on one side Y1 of Y and a fourth wall portion 164 located on the other side Y2 in the third direction Y. When viewed from the first direction Z, the width of the first wall portion 161 and the second wall portion 162 (dimension in the second direction X) is the width of the third wall portion 163 and the fourth wall portion 164 (in the third direction Y). Dimension) wider. A recessed portion 168 extending along the second direction X is formed on the outer surface of the third wall portion 163.

  On the third wall portion 163 and the fourth wall portion 164, a plurality of convex plate portions 163a and 164a protruding along the second direction X to the other side Z2 of the first direction Z are formed at a predetermined interval. Further, the first wall portion 161 and the second wall portion 162 are formed with convex plate portions 161a and 162a projecting from the outer edge to the other side Z2 in the first direction Z at the center in the third direction Y.

  Positioning holes 16c opened toward one side in the first direction Z are formed at both ends of the third wall portion 163 and the fourth wall portion 164 in the second direction X. A through hole 16e is formed at one diagonal position of the first cover member 16, and a through hole 16f is formed at the other diagonal position. That is, in the first cover member 16, a corner portion located on one side X1 in the second direction X and the other side Y2 in the third direction Y, and the other side X2 in the second direction X and one side Y1 in the third direction Y. A through-hole 16e is formed in a corner portion located at a corner portion located on one side X1 in the second direction X and one side Y1 in the third direction Y, and the other side X2 in the second direction X and the third direction Y. A through hole 16f is formed in a corner portion located on the other side Y2.

(Configuration of the second cover member 17)
FIG. 5 is an exploded perspective view when the actuator 1 shown in FIG. 1 is disassembled and viewed from one side Z1 in the first direction Z. As shown in FIGS. 2 and 5, the second cover member 17 is formed substantially symmetrically in the first direction Z with respect to the first cover member 16 as described below. First, the second cover member 17 is formed with a rectangular recess 175 that opens toward one side Z1 in the first direction Z. In addition, two concave portions 176 and 177 arranged in the second direction X are formed at the bottom of the concave portion 175. In the second cover member 17, the recess 175 includes a first wall portion 171 located on one side X1 in the second direction X, a second wall portion 172 located on the other side X2 in the second direction X, and a third wall portion 172. The third wall portion 173 located on one side Y1 in the direction Y and the fourth wall portion 174 located on the other side Y2 in the third direction Y are surrounded. When viewed from the first direction Z, the width of the first wall portion 171 and the second wall portion 172 (dimension in the second direction X) is the width of the third wall portion 173 and the fourth wall portion 174 (in the third direction Y). Dimension) wider. A recessed portion 178 extending along the second direction X is formed on the outer surface of the third wall portion 173.

On the third wall portion 173 and the fourth wall portion 174, a plurality of convex plate portions 173a and 174a projecting toward the one side Z1 in the first direction Z along the second direction X are formed at predetermined intervals. Further, the first wall portion 171 and the second wall portion 172 are formed with convex plate portions 171a and 172a protruding from the outer edge to the one side Z1 in the first direction Z in the center in the third direction Y.

  At both ends of the third wall portion 173 and the fourth wall portion 174 in the second direction X, positioning holes 17c opened toward the one side Z1 in the first direction Z are formed. Further, a through hole 17e is formed at one diagonal position of the second cover member 17, and a through hole 17f is formed at the other diagonal position. That is, in the second cover member 17, a corner portion located on one side X1 in the second direction X and the other side Y2 in the third direction Y, and the other side X2 in the second direction X and one side Y1 in the third direction Y. A through-hole 17e is formed in a corner portion located at one side, a corner portion located on one side X1 in the second direction X and one side Y1 in the third direction Y, and the other side X2 in the second direction X and the third direction Y A through hole 17f is formed in a corner portion located on the other side Y2.

(Configuration of magnetic drive circuit 6)
6 is an exploded perspective view of the magnetic drive circuit 6 shown in FIG. FIG. 7 is an exploded perspective view of the magnetic drive circuit 6 shown in FIG. As shown in FIGS. 2, 6, and 7, the magnetic drive circuit 6 includes a coil 7 and a magnet 8 that faces the coil 7 in the first direction Z. In this embodiment, the coil 7 includes two coils 71 and 72 arranged in parallel in the second direction X, and the coil 7 has a long side 701 (effective portion) extending in the third direction Y. It is a circular air core coil. The coil 7 is held by a holder 60 and provided on the support 2 side.

(Configuration of holder 60)
As shown in FIGS. 2, 5, 6, and 7, the holder 60 is formed so that the two coil holding holes 66 and 67 are arranged in parallel in the second direction X. Coils 7 are arranged in each. The coil holding holes 66 and 67 are through holes. Receiving portions 661 and 671 are formed at both ends in the third direction Y at the end of one side Z1 of the coil holding holes 66 and 67 in the first direction Z. Yes. Therefore, when the coil 7 is attached to the coil holding holes 66 and 67 from the other side Z2 in the first direction Z, the short side 702 (invalid portion) of the coil 7 is moved on the one side Z1 in the first direction Z by the receiving portions 661 and 671. It becomes a supported state. In this state, the coil 7 is fixed to the holder 60 with an adhesive or the like.

  The holder 60 has a first side X1 in the second direction X, a second side X2 in the second direction X, a first side Y1 in the third direction Y, and a third direction with respect to the portion where the coil holding holes 66 and 67 are formed. On the other side Y2 in the direction Y, a first wall portion 61, a second wall portion 62, a third wall portion 63, and a fourth wall portion 64 are provided. When viewed from the first direction Z, the width of the first wall portion 61 and the second wall portion 62 (dimension in the second direction X) is the width of the third wall portion 63 and the fourth wall portion 64 (in the third direction Y). Dimension) wider.

  In the holder 60, a first opening 601 is formed between the coil holding hole 66 and the first wall 61, and a second opening 602 is formed between the coil holding hole 67 and the second wall 62. ing. The first opening 601 and the second opening 602 penetrate the holder 60 in the first direction Z.

  The first wall 61 has a recess 611 formed on one side Z1 in the first direction Z and a recess 612 formed on the other side Z2 in the first direction Z. The recesses 611 and 612 are formed in the center of the first wall 61 in the third direction Y. The second wall 62 has a recess 621 formed on one side Z1 in the first direction Z and a recess 622 formed on the other side Z2 in the first direction Z. The recesses 621 and 622 are formed in the center of the second wall 62 in the third direction Y. On the outer surface side of the third wall 63, a plurality of recesses 631 are formed along the second direction X on one side Z1 in the first direction Z, and a plurality of recesses 632 are formed on the other side Z2 in the first direction Z. It is formed along two directions X. On the outer surface side of the fourth wall portion 64, a plurality of recesses 641 are formed along the second direction X on one side Z1 in the first direction Z, and a plurality of recesses 642 are formed on the other side Z2 in the first direction Z. It is formed along two directions X.

  At both ends in the second direction X of the third wall portion 63 and the fourth wall portion 64, a positioning convex portion 60c that protrudes in one side Z1 in the first direction Z and a protrusion in the other side Z2 in the first direction Z. The positioning convex portion 60d is formed. At both ends in the second direction X of the third wall portion 63 and the fourth wall portion 64, a first opening 601 and a notch 603 in which the inner wall of the second opening 602 is recessed outward are formed. .

  A through hole 60e is formed at one diagonal position of the holder 60, and a through hole 60f is formed at the other diagonal position. That is, in the second cover member 17, a corner portion located on one side X1 in the second direction X and the other side Y2 in the third direction Y, and the other side X2 in the second direction X and one side Y1 in the third direction Y. A through hole 60e is formed in the corner portion located at the corner portion located at one side X1 in the second direction X and one side Y1 in the third direction Y, and the other side X2 in the second direction X and the third direction Y. A through hole 60f is formed in a corner portion located on the other side Y2.

  Concave portions 630 extending along the second direction X are formed on the outer surface of the third wall portion 63, and positioning end portions protruding to one side Y <b> 1 in the third direction Y are formed at both ends of the concave portion 630. A convex portion 636 is formed. Four guide grooves 637 extending from the coil holding holes 66 and 67 to the outer surface of the third wall 63 (the bottom surface of the recess 630) are formed in the third wall 63.

(Configuration of the support 2)
In the present embodiment, the first cover member 16, the holder 60, and the second cover member 17 are stacked in the first direction Z, and the through hole 17e of the second cover member 17, the through hole 60e of the holder 60, and the second cover. The screw 18 is fastened to the through hole 17e of the member 17, and the first cover member 16, the holder 60, and the second cover member 17 are fastened in the first direction Z. As a result, the support body 2 is formed.

  At that time, the convex plate portions 163 a and 164 a of the first cover member 16 fit into the concave portions 631 and 641 of the holder 60, and the convex plate portions 161 a and 162 a of the first cover member 16 fit into the concave portions 611 and 621 of the holder 60. Further, the convex portion 60 c of the holder 60 fits into the hole 16 c of the first cover member 16. Further, the convex plate portions 173 a and 174 a of the second cover member 17 fit into the concave portions 632 and 642 of the holder 60, and the convex plate portions 171 a and 172 a of the second cover member 17 fit into the concave portions 612 and 622 of the holder 60. Further, the convex portion 60 d of the holder 60 fits into the hole 17 c of the second cover member 17. Thus, the 1st cover member 16, the holder 60, and the 2nd cover member 17 are connected in the state positioned mutually. The guide groove 637 opens as a hole 638 between the holder 60 and the second cover member 17.

  The through hole 17f of the second cover member 17, the through hole 60f of the holder 60, and the through hole 17f of the second cover member 17 are screws 19 that are fixed to the frame of the device when the actuator 1 is mounted on various devices. Is stopped. In this embodiment, when the screws 18 and 19 are stopped, the heads of the screws 18 and 19 do not protrude from the second cover member 17 to the other side Z2 in the first direction Z.

(Processing of end of coil 7)
In the actuator 1 configured as described above, as shown in FIGS. 1 and 2, the cover 11 used for the support body 2 is on the outer surface side 110 and on the first side surface 111 located on one side X1 in the second direction X. A second side surface 112 located on the other side X2 in the second direction X, a third side surface 113 located on one side Y1 in the third direction Y, and a fourth side located on the other side Y2 in the third direction Y. And a side surface 114. Here, the length of the third side surface 113 and the fourth side surface 114 in the second direction X is longer than the length of the first side surface 111 and the second side surface 112 in the third direction Y. In this embodiment, the wiring substrate 15 to which the first end portion 706 of the coil wire constituting the coil 7 and the second end portion 707 of the winding end are electrically connected is fixed to the third side surface 113. Has been.

  In this embodiment, since the guide groove 637 is formed in the holder 60, the first end portion 706 at the start of winding and the second end portion 707 at the end of winding are fixed when being fixed to the coil holding holes 66 and 67 of the holder 60. The first cover member 16, the holder 60, and the second cover member 17 are overlapped and connected in the first direction Z after being pulled out to the outside through the guide groove 637. As a result, the first end 706 and the second end 707 are pulled out from the hole 638.

  Therefore, after the first cover member 16, the holder 60 and the second cover member 17 are overlapped and connected in the first direction Z, the wiring board 15 can be fixed to the recesses 168, 630 and 178. At that time, the convex portion 636 of the holder 60 is fitted into the positioning hole 155 of the wiring board 15 to position the wiring board 15, and then the wiring board 15 is fixed with an adhesive or the like. Therefore, the coil 7 can be driven from the outside via the wiring board 15. Here, since the notch 150 that opens the hole 638 is formed in the wiring board 15, the first end 706 and the second end 707 drawn out from the hole 638 are passed through the notch 150 and the wiring board. It extends to each of the 15 lands 151 and is soldered to the lands 151. As a result, the two coils 7 are electrically connected in series. Note that the two coils 7 may be electrically connected in parallel.

(Configuration of movable body 3)
As shown in FIGS. 2, 4, 5, 6, and 7, the movable body 3 includes a first plate portion 860 that is opposed to the coil 7 on one side Z <b> 1 in the first direction Z. The magnet 86 includes a yoke 86 and a second yoke 87 including a second plate portion 870 facing the coil 7 on the other side Z <b> 2 in the first direction Z. The magnet 8 includes the first yoke 86. It is held on at least one of the surface of the plate portion 860 facing the coil 7 and the surface of the second yoke 87 facing the coil 7 and faces the coil 7 in the first direction Z.

  In this embodiment, as the magnet 8, the first magnet 81 fixed to the surface of the first plate portion 860 of the first yoke 86 facing the coil 7 by a method such as adhesion, and the second plate portion 870 of the second yoke 87. A second magnet 82 fixed by a method such as adhesion is provided on the surface facing the coil 7. In this state, the first magnet 81 faces the long side 701 of the coil 7 on one side Z1 in the first direction Z, and the second magnet 82 faces the long side 701 of the coil 7 on the other side Z2 in the first direction Z. Are facing each other. Each of the first magnet 81 and the second magnet 82 is polarized and magnetized in the thickness direction (first direction Z), the surface facing the coil 7 in the first magnet 81, and the coil 7 in the second magnet 82. Opposing surfaces are magnetized with different poles. In the present embodiment, each of the first magnet 81 and the second magnet 82 is composed of four magnets facing the respective four long sides 701 of the two coils 7 (coils 71 and 72).

  In this embodiment, the first yoke 86 extends from the first plate portion 860 toward the other side Z2 in the first direction Z to a position overlapping the second yoke 87, and is connected to the second yoke 87. The plate 861 and the first magnet 81 extend on the opposite side of the first connecting plate 861 from the first plate 860 toward the other side Z2 in the first direction Z to a position overlapping the second yoke 87. And a second connecting plate portion 862 connected to the second yoke 87. The first connecting plate portion 861 and the second connecting plate portion 862 are each bent toward the other side Z2 in the first direction Z from the end portions of the first plate portion 860 that are located on opposite sides of the second direction X. . For this reason, the first connecting plate portion 861 extends toward the other side Z2 in the first direction Z through the one side X1 in the second direction X with respect to the coil 7, and the second connecting plate portion 862 is The coil 7 extends toward the other side Z2 of the first direction Z through the other side Z2 of the second direction X. At that time, the first connecting plate portion 861 extends toward the other side Z2 in the first direction Z through the first opening 601 of the holder 60 on the one side X1 in the second direction X with respect to the coil 7. The second connecting plate portion 862 extends toward the other side Z2 in the first direction Z through the second opening 602 of the holder 60 on the other side Z2 in the second direction X with respect to the coil 7. .

  In this embodiment, the first connecting plate portion 861 and the second connecting plate portion 862 are connected to the end portion of the second yoke 87 by welding. More specifically, the first connecting plate portion 861 a overlaps the first side surface 871 of the second plate portion 870 of the second yoke 87 with the end portion 861 a on the other side Z2 in the first direction Z of the first connecting plate portion 861. 861 and the first side surface 871 of the second yoke 87 are welded. Similarly, the end of the second connecting plate portion 862 on the other side Z2 in the first direction Z overlaps with the second side surface 872 of the second plate portion 870 of the second yoke 87, and the second connecting plate portion 862 and the second connecting plate portion 862 are connected to the second connecting plate portion 862. The second side surface 872 of the yoke 87 is welded.

  One of the end portion 861a of the first connecting plate portion 861 and the first side surface 871 is formed with a convex portion that is fitted and welded to the concave portion formed on the other side, and the end portion of the second connecting plate portion 862. One of 862a and the second side surface 872 is formed with a convex portion that is fitted and welded to a concave portion formed on the other side. In this embodiment, the convex portion 873 formed on the second plate portion 870 is fitted and welded to the concave portion 863 formed on the end portion 861a of the first connecting plate portion 861, and the convex portion formed on the second plate portion 870. 874 is fitted and welded to a recess 864 formed in the end 862a of the second connecting plate 862.

(Assembling process of actuator 1)
FIG. 8 is a plan view of the first cover member 16, the first yoke 86, the holder 60, and the second yoke 87 shown in FIG. In the present embodiment, in the first yoke 86, the width of the first connecting plate portion 861 and the second connecting plate portion 862 in the third direction Y is narrower than the width of the first plate portion 860 in the third direction Y, and at least the first yoke 86. A notch 869 exists in a portion overlapping the through hole 16 a of the cover member 16 and the notch 603 of the holder 60. In the second yoke 87, the width in the third direction Y of the portions 876 and 877 connected to the first connecting plate portion 861 and the second connecting plate portion 862 is larger than the width in the third direction Y of the second plate portion 870. A notch 879 exists in a narrow portion at least overlapping with the through hole 16 a of the first cover member 16 and the notch 603 of the holder 60. Therefore, when the first cover member 16, the first yoke 86, the holder 60, and the second yoke 87 are stacked in the first direction Z, the through hole 16a of the first cover member 16, the first yoke, as shown in FIG. The through hole 13 is formed by the notch 869 of the 86, the notch 603 of the holder 60, and the notch 879 of the second yoke 87.

  Therefore, if the positioning pin 10 is passed through the through hole 16a of the first cover member 16, the first yoke 86, the holder 60, and the second yoke 87 are sequentially stacked in the first direction Z with reference to the positioning pin 10. Since the positions of the notch 869 of the first yoke 86, the notch 603 of the holder 60, and the notch 879 of the second yoke 87 can be aligned, the first cover member 16, the first yoke 86, the holder 60, and The second yoke 87 can be properly stacked in the first direction Z.

(Stopper configuration)
As shown in FIG. 2, in this embodiment, the first cover member 16 has the first cover member 16 on one side X1 in the second direction X with respect to the first connecting plate portion 861 of the first yoke 86 used for the movable body 3. The wall 161, the first wall 61 of the holder 60, and the inner surface of the first wall 171 of the second cover member 17 are opposed to each other in a state of constituting a continuous plane (first contacted portion 118). . Therefore, the first connecting plate portion 861 contacts the first contacted portion 118 when the movable body 3 moves to the one side X1 in the second direction X, and the one side X1 of the movable body 3 in the second direction X. The 1st stopper which regulates the movable range to is comprised.

Similarly, on the other side X2 in the second direction X with respect to the second connecting plate portion 862, the second wall portion 162 of the first cover member 16, the second wall portion 62 of the holder 60, and the second cover member 17 are disposed. The inner surfaces of the second wall portion 172 face each other in a state of constituting a continuous plane (second contacted portion 119).
Therefore, the second connecting plate portion 862 contacts the second contacted portion 119 when the movable body 3 moves to the other side X2 of the second direction X, and the other side X2 of the movable body 3 in the second direction X. The 2nd stopper which regulates the movable range to is comprised.

(Configuration of connection body 90 and viscoelastic member 9)
As shown in FIGS. 2, 4 and 5, a connection body 90 having at least one of elasticity and viscoelasticity is provided for the support body 2 and the movable body 3. In this embodiment, the connection body 90 is a viscoelastic member 9 provided at a position where the support body 2 and the movable body 3 face each other in the first direction Z, and the first direction Z, the second direction X, and the third direction. It can be elastically deformed in the direction Y. 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. Further, 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, only the viscoelastic member 9 is connected to both the support body 2 and the movable body 3 as the connection body 90. 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 two first viscoelastic members 91 are disposed between the first plate portion 860 of the first yoke 86 and the bottom portions of the recesses 166 and 167 of the first cover member 16, so that the second viscoelasticity is obtained. Two members 92 are disposed between the second plate portion 870 of the second yoke 87 and the bottoms of the recesses 176 and 177 of the second cover member 17.

  Here, the first viscoelastic member 91 is disposed in a compressed state in the first direction Z between the first plate portion 860 of the first yoke 86 and the bottom portions of the recesses 166 and 167 of the first cover member 16. The second viscoelastic member 92 is disposed in a compressed state in the first direction Z between the second plate portion 870 of the second yoke 87 and the bottoms of the recesses 176 and 177 of the second cover member 17. . The first viscoelastic member 91 is bonded to the surface in contact with the support body 2 (the bottoms of the recesses 166 and 167 of the first cover member 16), and is bonded to the surface in contact with the movable body 3 (first yoke 86). The second viscoelastic member 92 is bonded to a surface in contact with the support body 2 (bottom portions of the recesses 176 and 177 of the second cover member 17), and is bonded to a surface in contact with the movable body 3 (second yoke 87).

  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 the vibration acceleration with respect to the input signal can be improved, thereby realizing vibration with a subtle nuance. be able to.

(basic action)
In the actuator 1 of this embodiment, when an alternating current is applied to the coil 7, 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 coil 7 is adjusted to obtain an acceleration at which the movable body 3 moves to one side X1 in the second direction X and an acceleration at which the movable body 3 moves to the other side X2 in the second direction X. If different, the user can experience vibration having directionality in the second direction X.

(Main effects of this form)
As described above, in the actuator 1 of the present embodiment, the first yoke 86 and the second yoke 87 are disposed on both sides in the first direction Z with the coil 7 interposed therebetween, and the first yoke 86 and the second yoke 87 are in the first direction. A magnet 81 and a second magnet 82 are fixed. Even in such a configuration, in the present embodiment, the first yoke 86 includes the first connecting plate portion 861 and the second connecting plate portion 862 that extend toward the second yoke 87, so that the first yoke 86 extends in the first direction Z. The first connecting plate portion 861 and the second yoke 87 can be connected and the second connecting plate portion 862 and the second yoke 87 can be connected on the other side Z2 (the side where the second yoke 87 is located). Therefore, it is possible to efficiently manufacture a yoke in which the magnet 8 is fixed to the surfaces of the first plate portion 860 and the second plate portion 870 that face each other. Particularly in this embodiment, since the first connecting plate portion 861 and the second connecting plate portion 862 are connected to the second yoke 87 by welding, only the other side Z2 in the first direction Z needs to be welded. It can be done efficiently.

  In addition, each of the first connecting plate portion 861 and the second connecting plate portion 862 is bent toward the other side Z2 in the first direction Z from the end portion located on the opposite side of the first plate portion 860, so One yoke 86 can be manufactured efficiently. Further, the convex portion 873 formed on the second plate portion 870 is fitted and welded to the concave portion 863 formed on the end portion 861a of the first connecting plate portion 861, and the convex portion 874 formed on the second plate portion 870 is formed. The second connecting plate 862 is fitted and welded to a recess 864 formed in the end 862 a of the second connecting plate 862. Therefore, the first yoke 86 and the second yoke 87 can be coupled in a state where the first yoke 86 and the second yoke 87 are positioned by the concave portions 863 and 864 and the convex portions 873 and 874.

  In addition, the first abutted portion 118 and the second abutted portion 119 that restrict the movable range when the movable body 3 moves in the second direction X include the first wall portion (the first cover member 16 having a wide width). First wall portion 161, first wall portion 61 of holder 60, first wall portion 171 of second cover member 17, and second wall portion (second wall portion 162 of first cover member 16, holder 60). The second wall portion 62 and the second wall portion 172 of the second cover member 17. Therefore, the strength of the first contacted portion 118 and the second contacted portion 119 is high. Even when the movable body 3 suddenly moves in the second direction X due to an impact at the time of dropping, the first contacted portion 118 and the second contacted portion 119 are not easily damaged.

Further, in this embodiment, since the viscoelastic member 9 is arranged at a portion where the support body 2 and the movable body 3 face each other in the first direction Z, the resonance when the movable body 3 is driven is suppressed by the viscoelastic member 9. can do. 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, since the reproducibility of vibration acceleration with respect to the input signal can be improved, vibration can be realized with a delicate nuance. In this embodiment, since the support body 2 includes a plurality of members (first cover member 16, holder 60, and second cover member 17) stacked in the first direction Z, the support body 2 and the movable body 3 are provided. However, since the viscoelastic member 9 is arranged in a compressed state in the first direction Z, the viscoelastic member 9 is configured so that the support 2 and the movable member 9 are movable. Always in contact with body 3. For this reason, the viscoelastic member 9 reliably follows the movement of the movable body 3. In addition, since the viscoelastic member 9 is bonded to the support 2 at the surface in contact with the support 2 and is bonded to the movable body 3 at the surface in contact with the movable body 3, the position of the viscoelastic member 9 is not easily displaced. Therefore, the viscoelastic member 9 reliably follows the movement of the movable body 3.

  The first cover member 16, the holder 60, and the second cover member 17 are fastened in the first direction Z by a screw 18 having a screw shaft extending in the first direction Z. Therefore, the viscoelastic member 9 can be compressed in the first direction Z when the screw 18 is tightened to fasten the first cover member 16, the holder 60, and the second cover member 17. Further, the portions of the first support member 16 and the second cover member 17 of the support 2 that are in contact with the viscoelastic member 9 are concave portions 166, 167, 176, and 177. Therefore, the position of the viscoelastic member 9 is difficult to shift.

  In addition, since the first end 706 and the second end 707 of the coil wire used for the coil 7 are electrically connected to the wiring board 15 fixed to the support 2, the first end of the coil wire It is difficult to cause a situation in which the coil 7 is damaged due to the portion 706 and the second end 707 being pulled. Further, since the wiring substrate 15 is fixed to the third side surface 113 corresponding to the long side when viewed from the first direction Z, the wiring substrate 15 having a long dimension can be used. . Therefore, regardless of the orientation, position, number, etc. of the coils 7, it is easy to electrically connect the wiring board 15 without having to route the first end 706 and the second end 707 of the coil 7 over a long distance. Thus, the end of the coil 7 can be properly processed.

  Further, a hole 638 through which the first end portion 706 and the second end portion 707 are passed is formed in the third side surface 113 of the support 2, and the hole 638 is connected to the guide groove 637 of the holder 60. Therefore, since the first end 706 and the second end 707 can be guided to the wiring board 15 through the guide groove 637 and the hole 638, the first end 706 and the second end 707 are routed to the wiring board 15. Is easy.

(Other embodiments)
In the above embodiment, the two magnets 8 (the first magnet 81 and the second magnet 82) are provided. For example, the magnet 8 is disposed only on one side Z1 in the first direction Z with respect to the coil 7, The present invention may be applied to a case in which only the second yoke 87 exists on the other side Z2 in the first direction Z.

  In the said embodiment, although gel-like members, such as a silicone type gel, were used as the viscoelastic member 9, you may use rubber | gum etc. as a viscoelastic member. Moreover, in the said embodiment, although the viscoelastic member 9 was used as the connection body 90, you may use elastic members, such as a spring.

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

DESCRIPTION OF SYMBOLS 1 ... Actuator, 2 ... Support body (one side member), 3 ... Movable body (other side member), 6 ... Magnetic drive circuit, 7, 71, 72 ... Coil, 8 ... Magnet, 9 ... Viscoelastic member (connecting body) 10) Positioning pin, 11 ... Cover, 15 ... Wiring board, 16 ... First cover member, 16a, 16b, 16e, 16f, 17e, 17f, 60e, 60f ... Through hole, 16c, 17c, 155, 638 ... Hole, 17 ... second cover member, 18, 19 ... screw, 60 ... holder, 60c, 60d, 636, 873, 874 ... convex part, 61, 161, 171 ... first wall part, 62, 162, 172 ... first 2 walls, 63, 163, 173 ... 3rd wall, 64, 164, 174 ... 4th wall, 66, 67 ... coil holding hole, 81 ... 1st magnet, 82 ... 2nd magnet, 86 ... 1st York, 87
... second yoke, 90 ... connector, 91 ... first viscoelastic member, 92 ... second viscoelastic member, 110 ... outer surface side, 111 ... first side surface, 112 ... second side surface, 113 ... third side surface, 114 ... 4th side surface, 118 ... 1st contacted part, 119 ... 2nd contacted part, 601 ... 1st opening part, 602 ... 2nd opening part, 637 ... Guide groove, 661, 671 ... Receiving part, 701 ... long side, 702 ... short side, 706 ... first end, 707 ... second end, 860 ... first plate, 861 ... first connection plate, 862 ... second connection plate, 870 ... second Plate part, X ... second direction, Y ... third direction, Z ... first direction

Claims (14)

A support;
A movable body,
A connection body connected to the movable body and the support body and provided with at least one of elasticity and viscoelasticity;
A magnetic drive circuit comprising a coil and a first magnet facing the coil in a first direction, and moving the movable body relative to the support in a second direction intersecting the first direction;
Have
The support body includes a first wall portion facing the movable body on one side in the second direction, a second wall portion facing the movable body on the other side in the second direction, and the movable body on the movable body. A third wall portion facing on one side of the third direction intersecting the first direction and the second direction; and a fourth wall portion facing the movable body on the other side of the third direction. And
The width in the second direction of the first wall portion and the second wall portion is wider than the width in the third direction of the third wall portion and the fourth wall portion,
The first wall portion contacts the movable body when the movable body moves to one side in the second direction, and restricts a movable range of the movable body to the one side in the second direction. It has a contacted part,
The second wall portion contacts the movable body when the movable body moves to the other side in the second direction and restricts a movable range of the movable body to the other side in the second direction. An actuator comprising a contacted portion. The support includes a holder holding the coil or the first magnet, a first cover member whose ends overlap each other on the one side in the first direction with respect to the holder, and the holder with respect to the holder. A second cover member whose ends overlap each other on the other side in the first direction,
The first wall portion and the second wall portion each include a portion where the holder, the first cover member, and the second cover member overlap in the first direction. Actuator. The holder and the first cover member are formed with a positioning projection that protrudes from one to the other and fits into a positioning hole formed on the other,
3. The positioning convex portion is formed on the holder and the second cover member so as to protrude from one side to the other and fit into a positioning hole formed on the other side. The actuator described. The coil is provided in a state of being held by the holder on the support side,
The first magnet is provided on the movable body,
The movable body includes a first yoke having a first plate portion facing the coil on one side in the first direction, and a second plate facing the coil on the other side in the first direction. A second yoke provided with a portion,
The first magnet is fixed to one of a surface of the first plate portion facing the coil and a surface of the second plate portion facing the coil,
The first yoke extends from the first plate portion toward the other side in the first direction on one side in the second direction with respect to the coil and extends to a position overlapping the second yoke. A first connecting plate portion connected to the yoke, and extending from the first plate portion toward the other side in the first direction on the other side in the second direction with respect to the coil to a position overlapping the second yoke. And a second connecting plate portion connected to the second yoke,
The first connecting plate portion is in contact with the first wall portion when the movable body moves to one side in the second direction, and restricts a movable range of the movable body to one side in the second direction. And
The second connecting plate portion abuts on the second wall portion when the movable body moves to the other side in the second direction and restricts a movable range of the movable body to the other side in the second direction. The actuator according to claim 2 or 3, wherein   The actuator according to claim 4, wherein the first connecting plate portion and the second connecting plate portion are connected to the second yoke by welding.   The holder includes a first opening for passing the first connecting plate portion from one side to the other side in the first direction between the coil and the first wall portion, the coil, and the second The second opening for penetrating the second connecting plate portion from one side in the first direction toward the other side is formed between the wall portion and the wall portion. Actuator.   The magnetic drive circuit includes a second magnet fixed to the other of the surface of the first plate portion facing the coil and the surface of the second plate portion facing the coil. The actuator according to any one of claims 4 to 6.   The first cover member, the first yoke, the holder, and the second yoke pass through the first cover member, the first yoke, the holder, and the second yoke in a state where the first cover member, the first yoke, the holder, and the second yoke are stacked in the first direction. The actuator according to any one of claims 4 to 7, wherein a through hole is formed.   The actuator according to any one of claims 1 to 8, wherein a viscoelastic member is used as the connection body.   The actuator according to claim 9, wherein only the viscoelastic member is used as the connection body.   The actuator according to claim 9 or 10, wherein the viscoelastic member is fixed to both the movable body and the support body.   The actuator according to claim 9, wherein the viscoelastic member is a gel-like member.   The actuator according to claim 12, wherein the gel-like member is a silicone-based gel.   The actuator according to any one of claims 9 to 13, wherein the viscoelastic member is disposed at a position where the support body and the movable body face each other in the first direction. .

Images