CN111277103B

CN111277103B - Actuator, method for manufacturing actuator, and haptic device

Info

Publication number: CN111277103B
Application number: CN201911219519.8A
Authority: CN
Inventors: 武井宏光
Original assignee: Nidec Sankyo Corp
Current assignee: Nidec Instruments Corp
Priority date: 2018-12-04
Filing date: 2019-12-03
Publication date: 2022-08-30
Anticipated expiration: 2039-12-03
Also published as: CN111277103A; JP7166156B2; JP2020092495A

Abstract

An actuator, a manufacturing method of the actuator and a haptic device, the actuator can avoid the protrusion of a wiring substrate connecting coil lines and inhibit the disconnection of the coil lines. In the actuator, a wiring board (15) is provided along a side surface (a third wall portion of the holder) of the support body (2). The wiring board (15) can move in the first direction (Z) along the third wall (63) even in a state where the engagement convex portion (69) of the third wall (63) is fitted into the engagement hole (159). Therefore, after the wiring substrate is moved to a second position where the first land (151) and the lead-out portion (68) of the end portion (705) of the coil wire are separated from each other and the first land (151) and the end portion (705) of the coil wire are connected by solder, the wiring substrate (15) is moved to a first position where the first land and the lead-out portion (68) of the end portion of the coil wire are close to each other, and slack is given to the coil wire.

Description

Actuator, method for manufacturing actuator, and haptic device

Technical Field

The present invention relates to an actuator for vibrating a movable body, a method for manufacturing the actuator, and a haptic device.

Background

As a device for notifying information by vibration, an actuator is proposed which has a support, a movable body, a connecting body connected to the movable body and the support, and a magnetic drive circuit for moving the movable body relative to the support, the magnetic drive circuit including a coil held by the support and a magnet held by the movable body. Therefore, the wiring board is held on the support body, and the end portions of the coil wires constituting the coil are connected to the wiring board (see patent document 1).

Documents of the prior art

Patent literature

Patent document 1: japanese patent laid-open publication No. 2017-135948

Disclosure of Invention

Technical problem to be solved by the invention

In the technique described in patent document 1, since the wiring board protrudes outward from the support body, a space is likely to be wasted when the actuator is mounted on various devices. Further, when vibration is transmitted to the coil wire constituting the coil, there is a possibility that the coil wire is broken, but a measure against the breakage is not disclosed in patent document 1.

In view of the above problems, an object of the present invention is to provide an actuator and a method of manufacturing the actuator, in which the projection of a wiring board to which coil lines are connected is avoided and disconnection of the coil lines is suppressed.

Technical scheme for solving technical problems

In order to solve the above-described problem, the present invention provides an actuator comprising: a support; a movable body; a magnetic drive circuit including a coil provided on one of the support and the movable body and configured to move the movable body relative to the support; and a wiring board that is held by the one-side member so as to extend along a side surface of the one-side member and has a land to which an end portion of a coil wire constituting the coil is connected, wherein a lead-out portion that leads the end portion to the side surface and an engagement convex portion that protrudes from the side surface are formed on the one-side member, wherein an engagement hole into which the engagement convex portion is fitted is formed on the wiring board, wherein a play is provided between the engagement convex portion and an inner edge of the engagement hole, and wherein the play is capable of linearly moving the wiring board along the side surface from a first position at which the wiring board is held by the side surface toward a second position at which the land and the lead-out portion are separated, and wherein slack of the coil wire is given between the coil and the end portion when the wiring board is at the first position.

In the method of manufacturing the actuator, the end portion and the pad are connected when the wiring board is at the second position, and then the wiring board is moved to the first position to apply slack to the coil wire between the coil and the end portion.

In the present invention, the wiring board to which the coil wire is connected is provided along the side surface of the one-side member, and the wiring board does not protrude. Therefore, when the actuator is mounted on various devices, a wasteful space is not easily generated. Further, even in a state where the engaging convex portion is fitted into the engaging hole, the wiring board can be moved to the first position and the second position, and therefore, if the end portion and the land are connected when the wiring board is at the second position, and then the wiring board is moved to the first position, slack of the coil wire can be given between the coil and the end portion. Therefore, disconnection of the coil wire can be suppressed. In addition, since the engaging convex portion is fitted into the engaging hole during the above operation, the movable range of the wiring board is restricted, and the engaging hole and the engaging convex portion function as a guide. Therefore, the wiring board can be easily moved from the second position where the connection between the coil wire and the land is made to the first position where the coil wire is slackened.

In the present invention, the following manner may be adopted: the engaging convex portion has a protruding portion protruding from the side surface and a flange portion protruding from the protruding portion in a direction orthogonal to a protruding direction of the protruding portion at a distal end portion of the protruding portion, the flange portion is capable of passing through the engaging hole when the wiring board is at a third position between the first position and the second position, and the wiring board is held at the side surface in the first position in a state where the protruding portion is fitted into the engaging hole and a part of the flange portion overlaps the wiring board from a side opposite to the side surface. According to this aspect, after the engaging convex portion is fitted into the engaging hole at the third position, the flange portion of the engaging convex portion suppresses the engaging convex portion from falling out of the engaging hole, and therefore, the wiring board can be easily moved from the second position where the connection between the coil wire and the land is performed to the first position where the slack of the coil wire is given.

In the present invention, the following manner may be adopted: when the engaging hole and the engaging protruding portion are viewed from a direction orthogonal to the side surface, the engaging hole has a shape in which a first hole portion and a second hole portion smaller than the first hole portion are connected, the width of the protruding portion in a direction orthogonal to the movable direction of the first position and the second position of the wiring board is smaller than the width of the first hole portion and the second hole portion, the flange portion has a shape in which a third portion having substantially the same size as the first hole portion and a fourth portion having substantially the same size as the second hole portion are connected, and the movable range of the wiring board toward the second position and the movable range of the wiring board toward the first position are restricted by the protruding portion coming into contact with the inner peripheral surface of the engaging hole.

In the present invention, the following manner may be adopted: the first hole portion, the second hole portion, and the fourth portion are each shaped such that, when the engaging hole and the engaging protrusion are viewed from a direction orthogonal to the side surface, both end portions thereof located in a direction orthogonal to the movable direction are bent, and both end portions thereof located in a direction orthogonal to the movable direction are provided with a bent portion bent to have substantially the same shape as the first hole portion on the side of the third portion and a straight portion extending in a straight line from the bent portion to a side opposite to the fourth portion, and when the wiring board is located at the first position, at least a part of the straight portion overlaps the wiring board from the side opposite to the side surface.

In the present invention, the following manner may be adopted: when the wiring board moves to the second position, a portion where the protruding portion abuts against the inner peripheral surface of the engagement hole is a straight portion, and when the wiring board moves to the first position, a portion where the protruding portion abuts against the inner peripheral surface of the engagement hole is a curved portion.

In the present invention, the following manner may be adopted: the plurality of engagement holes and the plurality of engagement protrusions are provided along a direction orthogonal to a movable direction of the first position and the second position of the wiring board.

In the present invention, the following manner may be adopted: the wiring board is held on the side surface by plastically deforming the engaging convex portion.

In the present invention, the following manner may be adopted: the wiring board and the side surface are fixed by an adhesive.

In the present invention, the following manner may be adopted: a gap is provided between the wiring board and the side surface, the gap extending from one direction to the other direction, and the adhesive is filled in the gap. According to this aspect, since the adhesive is easily filled between the wiring board and the side surface, the wiring board and the side surface can be easily fixed by the adhesive.

In the present invention, the following manner may be adopted: the coil and the wiring board are provided on the support side. For example, the following may be employed: the support body includes a holder that holds the coil and the wiring board.

(effect of the invention)

In the present invention, the wiring board to which the coil wire is connected is provided along the side surface of the one-side member, and the wiring board does not protrude. Therefore, when the actuator is mounted on various devices, a wasteful space is not easily generated. Further, even in a state where the engaging convex portion is fitted into the engaging hole, the wiring board can be moved to the first position and the second position, and therefore, if the end portion and the land are connected when the wiring board is at the second position, and then the wiring board is moved to the first position, the coil wire can be slackened between the coil and the end portion. Therefore, disconnection of the coil wire can be suppressed. In addition, since the engaging convex portion is fitted into the engaging hole during the above operation, the movable range of the wiring board is restricted, and the engaging hole and the engaging convex portion function as a guide. Therefore, the wiring board can be easily moved from the second position where the connection between the coil wire and the land is made to the first position where the coil wire is given slack.

Drawings

Fig. 1 is a perspective view of an actuator according to an embodiment of the present invention.

Fig. 2 is an XZ sectional view of the actuator shown in fig. 1.

Fig. 3 is an exploded perspective view of the actuator shown in fig. 1 when it is exploded and viewed from one side in the first direction.

Fig. 4 is an exploded perspective view of the actuator shown in fig. 1 when exploded and viewed from the other side in the first direction.

Fig. 5 is an exploded perspective view of the magnetic drive circuit shown in fig. 2.

Fig. 6 is an explanatory view of the holder, the coil, and the like shown in fig. 5.

Fig. 7 is an explanatory view of the retainer and the like shown in fig. 6.

Fig. 8 is an explanatory view of the movable body shown in fig. 2.

Fig. 9 is an explanatory view of the engaging convex portion shown in fig. 6 and the like.

Fig. 10 is an explanatory view of the protruding portion of the engaging protruding portion shown in fig. 9.

Fig. 11 is an explanatory view of the engagement hole shown in fig. 6 and the like.

Fig. 12 is an explanatory view showing a state in which the engaging convex portion shown in fig. 9 is fitted into the engaging hole at the third position.

Fig. 13 is an explanatory diagram showing a positional relationship between the engaging convex portion and the engaging hole when the wiring board shown in fig. 9 is moved to the second position.

Fig. 14 is an explanatory diagram showing a state in which the wiring board shown in fig. 11 is held in the holder at the first position.

Fig. 15 is a cross-sectional view showing a gap between the wiring board and the third wall portion of the holder shown in fig. 5 and the like.

Description of the reference numerals

1 … actuator; 2 … a support; 3 … movable body; 6 … magnetic drive loop; 7 … coil; 8 … a magnet; 9 … viscoelastic member; 15 … wiring board; 16 … a first housing part; 17 … second housing part; 26 … board; a 60 … cage; 63 … third wall portion (side surface of support body); 68 … exit; 69 … snap-fit projections; 71 … a first coil; 72 … second coil; 81. 83 … a first magnet; 82. 84 … a second magnet; 86 … a first yoke; 87 … a second yoke; a 90 … connector; 91 … a first viscoelastic member; 92 … a second viscoelastic member; 151 … first pad; 159 … snap-fit hole; 159a … first aperture section; 159b … second aperture portion; 159c, 159d, 691a, 692c, 692d … curved portions; 159e, 691b, 691e, 692f, 692g … straight portions; 651. 652 … coil retention holes; 701 long side 701 …; 702 … short side; 705 … ends of coil wires; a G … gap; p1 … first position; p2 … second position; p3 … third position; a second direction X …; y … third direction; z … first direction

Detailed Description

Embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, three directions intersecting each other will be referred to as a first direction Z, a second direction X, and a third direction Y. The first direction Z, the second direction X, and the third direction Y are mutually orthogonal directions. Note that X1 is marked on one side in the second direction X, X2 is marked on the other side in the second direction X, Y1 is marked on one side in the third direction Y, Y2 is marked on the other side in the third direction Y, Z1 is marked on one side in the first direction Z, and Z2 is marked on the other side in the first direction Z.

In addition, in the magnetic drive circuit 6 of the actuator 1 described below, the following method can be adopted: a mode in which the coil 7 is provided on the support body 2 (one side member) side and the magnet 8 is provided on the movable body 3 (the other side member) side; and a mode in which the magnet 8 is provided on the support body 2 (the other side member) side and the coil 7 is provided on the movable body 3 (one side member) side. In the following description, the center is the manner in which coil 7 is provided on the support body 2 side and magnet 8 is provided on the movable body 3 side.

(integral constitution)

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. 1. Fig. 3 is an exploded perspective view of the actuator 1 shown in fig. 1 when it is exploded and viewed from one side Z1 in the first direction Z. Fig. 4 is an exploded perspective view of the actuator 1 shown in fig. 1 when it is exploded and viewed from the other side Z2 in the first direction Z.

As shown in fig. 1 and 2, the actuator 1 of the present embodiment has a rectangular parallelepiped shape as a whole, the dimension of which in the second direction X is larger than the dimension of which in the third direction Y. As shown in fig. 2, actuator 1 includes a support 2, a movable body 3 movably supported by support 2, and a magnetic drive circuit 6 for relatively moving movable body 3 with respect to support 2, and magnetic drive circuit 6 vibrates movable body 3 in second direction X. The actuator 1 is provided with a connecting body 90 connected to the support 2 and the movable body 3.

As shown in fig. 1, 2, and 3, support body 2 includes first case member 16, holder 60, and second case member 17 that overlap in this order from one side Z1 to the other side Z2 in first direction Z, and movable body 3 and magnetic drive circuit 6 are disposed between first case member 16 and second case member 17. The first case member 16, the holder 60, and the second case member 17 each have a rectangular planar shape. The first corner 160 as a corner of the first case member 16, the second corner 600 as a corner of the holder 60, and the third corner 170 as a corner of the second case member 17 overlap in the first direction Z. In the present embodiment, the first case member 16, the holder 60, and the second case member 17 are each made of resin.

As shown in fig. 3 and 4, the first case member 16 has a bottom plate portion 165 surrounded by 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, a third wall portion 163 located on one side Y1 in the third direction Y, and a fourth wall portion 164 located on the other side Y2 in the third direction Y. The widths (the dimension in the second direction X) of the first wall 161 and the second wall 162 are wider than the widths (the dimension in the third direction Y) of the third wall 163 and the fourth wall 164 when viewed from the first direction Z.

Near the four corners of the first case member 16, positioning holes 16c that open to the other side Z2 in the first direction Z are formed. In addition, a bottomed hole 16e for fixing a screw 18 made of a self-tapping screw is formed at a pair of angular positions of the first case member 16, and a through hole 16f is formed at the other diagonal position.

Two

concave portions

166 and 167 are formed on the other side Z2 of the bottom plate portion 165 in the first direction Z and are aligned in the second direction X. Through holes 16a are formed at one side X1 corner of the recess 166 in the second direction X and at the other side X2 corner of the recess 167 in the second direction X. Through holes 16b are formed in both ends of the

recesses

166 and 167 in the third direction Y.

On the outer surface of the third wall part 163, a recess 168 recessed to the other side Y2 of the third direction Y extends along the second direction X. The plurality of protruding plate portions 163a protruding toward the other side Z2 in the first direction Z are formed at predetermined intervals along the second direction X in the third wall portion 163.

Cylindrical protrusions

161h and 162h protruding toward the other side Z2 in the first direction Z are formed on the first wall 161 and the second wall 162. Further, the first wall portion 161 and the second wall portion 162 have the

flange portions

161a and 162a formed at the center in the third direction Y and protruding from the outer edge toward the other side Z2 in the first direction Z.

The second case member 17 has a bottom plate portion 175 surrounded by 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, a third wall portion 173 located on one side Y1 in the third direction Y, and a fourth wall portion 174 located on the other side Y2 in the third direction Y. The widths (dimension in the second direction X) of the first wall portion 171 and the second wall portion 172 are wider than the widths (dimension in the third direction Y) of the third wall portion 173 and the fourth wall portion 174 when viewed from the first direction Z.

In the vicinity of the four corners of the second case member 17, positioning recesses 17d are formed, which open to one side Z1 in the first direction Z. Further, through holes 17e for fixing the screws 18 are formed at one pair of angular positions of the second case member 17, and through holes 17f are formed at the other pair of angular positions.

Two

concave portions

176 and 177 aligned in the second direction X are formed on a surface Z1 on one side in the first direction Z of the bottom plate portion 175. Further, notches 17b are formed at the edges of the

recesses

176 and 177.

On the outer surface of the third wall portion 173, a concave portion 178 that is concave to the other side Y2 of the third direction Y extends along the second direction X.

Holes

171h, 172h are formed in the first wall portion 171 and the second wall portion 172, and the

protrusions

161h, 162h of the first case member 16 are fitted therein. The first wall 171 has a boss portion 171a formed at the center in the third direction Y and protruding toward one side Z1 in the first direction Z.

(constitution of magnetic drive Circuit 6)

Fig. 5 is an exploded perspective view of the magnetic drive circuit 6 shown in fig. 2. As shown in fig. 2 and 5, the magnetic drive circuit 6 includes a coil 7 and a magnet 8 opposed to the coil 7 in the first direction Z. The coil 7 is composed of a first coil 71 and a second coil 72 arranged side by side in the second direction X, and the coil 7 is held by a holder 60 in the support body 2.

(constitution of coil 7 and holder 60)

Fig. 6 is an explanatory diagram of the holder 60, the coil 7, and the like shown in fig. 5. Fig. 7 is an explanatory view of the holder 60 and the like shown in fig. 6. As shown in fig. 6 and 7, the coil 7 is an air-core coil having an oblong shape in which a long side 701 (effective portion) extends in the third direction Y, and an end 705 of the coil wire is drawn to one side Y1 in the third direction Y.

The holder 60 has a bottom plate portion 65 surrounded by a first wall portion 61 located on one side X1 in the second direction X, a second wall portion 62 located on the other side X2 in the second direction X, a third wall portion 63 located on one side Y1 in the third direction Y, and a fourth wall portion 64 located on the other side Y2 in the third direction Y. The widths (dimension in the second direction X) of the first wall portion 61 and the second wall portion 62 are wider than the widths (dimension in the third direction Y) of the third wall portion 63 and the fourth wall portion 64 when viewed from the first direction Z.

Through holes 60e for passing the screws 18 are formed at one pair of angular positions of the holder 60, and through holes 60f are formed at the other pair of angular positions. The third wall portion 63 and the fourth wall portion 64 have, at both ends in the second direction X, positioning protrusions 60c protruding toward one side Z1 in the first direction Z and positioning protrusions 60d protruding toward the other side Z2 in the first direction Z.

Two

coil holding holes

651, 652 are formed in the bottom plate portion 65 so as to be aligned in the second direction X, and the first coil 71 and the second coil 72 are disposed in the

coil holding holes

651, 652, respectively. The

coil holding holes

651 and 652 are through holes, and receiving

portions

641 and 642 that protrude so as to overlap with a part of the

coil holding holes

651 and 652 on the other side Z2 in the first direction Z are formed at both ends in the third direction Y. Therefore, when the first coil 71 and the second coil 72 are mounted to the

coil holding holes

651 and 652 from the one side Z1 in the first direction Z, the short side 702 (ineffective portion) of the coil 7 is supported by the receiving

portions

641 and 642 on the other side Z1 in the first direction Z. In this state, the plate 26 overlaps the holder 60 from one side Z1 in the first direction Z, and the plate 26 is fixed to the first coil 71 and the second coil 72 by an adhesive and is fixed to the holder 60. The plate 26 is a nonmagnetic metal plate such as aluminum or stainless steel.

In the holder 60, a first opening 601 is formed between the coil holding hole 651 and the first wall portion 61, and a second opening 602 is formed between the coil holding hole 652 and the second wall portion 62. The first opening 601 and the second opening 602 penetrate the bottom plate 65 of the holder 60 in the first direction Z. Notches 603 are formed in the inner circumferential surfaces of the first opening 601 and the second opening 602.

The first wall portion 61 has a recess 611 (see fig. 2 and 4) 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 between the second corners 600. The second wall portion 62 has a recess 621 (see fig. 2 and 4) 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 between the second corners 600. Therefore, the four second corner portions 600 have a structure protruding toward both sides in the first direction Z.

(constitution of support body 2)

In the present embodiment, the screws 18 are fixed to the through-holes 17e of the second case member 17, the through-holes 60e of the holder 60, and the through-holes 16e of the first case member 16 in a state where the first case member 16, the holder 60, and the second case member 17 are overlapped in the first direction Z, and the first case member 16, the holder 60, and the second case member 17 are fastened in the first direction Z. When the screw 18 is fixed, the head of the screw 18 does not protrude from the second case member 17 to the other side Z2 of the first direction Z.

Further, an adhesive is filled between the first corner 160 of the first case member 16 and the second corner 600 of the holder 60, and an adhesive is filled between the second corner 600 of the holder 60 and the third corner 170 of the second case member 17.

In this way, the support body 2 is formed by the first case member 16, the holder 60, and the second case member 17. At this time, the

protrusions

161h and 162h of the first case member 16 penetrate the holes 61h and 62h of the holder 60, respectively, and are fitted into the

holes

171h and 172h of the second case member 17. The convex portion 60c of the holder 60 is fitted into the hole 16c of the first case member 16, and the convex portion 60d of the holder 60 is fitted into the concave portion 17d of the second case member 17. Therefore, the first case member 16, the holder 60, and the second case member 17 are connected in a state of being positioned with each other. In addition, the convex plate portion 163a of the first case member 16 overlaps the concave portion 630a of the holder 60.

When the actuator 1 is attached to various devices, the through hole 16f of the first case member 16, the through hole 60f of the holder 60, and the through hole 17f of the second case member 17 are used to fix screws (not shown) that are fixed to a frame of the device.

(constitution of Movable body 3)

Fig. 8 is an explanatory view of movable body 3 shown in fig. 2. As shown in fig. 5 and 8, the movable body 3 shown in fig. 2 and the like includes: a first yoke 86 having a flat plate portion 860 facing the coil 7 at one side Z1 in the first direction Z; a second yoke 87 having a flat plate 870 facing the coil 7 on the other side Z2 in the first direction Z; and a magnet 8. The magnet 8 is held on at least one of a surface of the flat plate portion 860 of the first yoke 86 facing the coil 7 and a surface of the flat plate portion 870 of the second yoke 87 facing the coil 7, and faces the coil 7 in the first direction Z.

In the present embodiment, the movable body 3 includes, as the magnets 8, the first magnet 81 fixed to the surface of the flat plate portion 860 of the first yoke 86 facing the coil 7 by a method such as adhesion, and the second magnet 82 adjacent to the first magnet 81 in the direction intersecting the first direction Z, of the surface of the flat plate portion 860 of the first yoke 86 facing the coil 7. In the present embodiment, the first magnet 81 and the second magnet 82 are adjacent in the second direction X. Therefore, the first magnet 81 is opposed to the long side 701 of the first coil 71 on the side Z1 in the first direction Z, and the second magnet 82 is opposed to the long side 701 of the second coil 72 on the side Z1 in the first direction Z.

The movable body 3 includes, as the magnet 8, the first magnet 83 fixed to the surface of the flat plate portion 870 of the second yoke 87 facing the coil 7 by means of bonding or the like, and the second magnet 84 adjacent to the first magnet 83 in the direction intersecting the first direction Z, of the surfaces of the flat plate portion 870 of the second yoke 87 facing the coil 7. In the present embodiment, the first magnet 83 and the second magnet 84 are adjacent in the second direction X. Therefore, the first magnet 83 faces the long side 701 of the first coil 71 on the other side Z2 in the first direction Z, and the second magnet 84 faces the long side 701 of the second coil 72 on the other side Z2 in the first direction Z.

In the present embodiment, the first magnets 81 and 83 and the second magnets 82 and 84 are polarized and magnetized in the thickness direction (first direction Z) and the width direction (X direction), respectively. The first magnet 81 and the second magnet 82 are magnetized in the same direction in the adjacent direction (second direction X), and the first magnet 83 and the second magnet 84 are magnetized in the same direction in the adjacent direction (second direction X). Therefore, the magnetic pole on the second magnet 82 side of the first magnet 81 is different from the magnetic pole on the first magnet 81 side of the second magnet 82, and the magnetic pole on the second magnet 84 side of the first magnet 83 is different from the magnetic pole on the first magnet 83 side of the second magnet 84.

In addition, the first magnet 81 and the first magnet 83 are magnetized in opposite directions in adjacent directions (second directions X), and the second magnet 82 and the second magnet 84 are magnetized in opposite directions in adjacent directions (second directions X). Therefore, the first magnet 81 and the first magnet 83 have different magnetic poles on the surface facing the first coil 71, and the second magnet 82 and the second magnet 84 have different magnetic poles on the surface facing the second coil 72.

The first yoke 86 includes a first connecting plate portion 861 extending from an end of one side X1 in the second direction of the flat plate portion 860 to the other side Z2 in the first direction Z and connected to the second yoke 87, and a second connecting plate portion 862 extending from an end of the other side X2 in the second direction of the flat plate portion 860 to the other side Z2 in the first direction Z and connected to the second yoke 87. The dimensions of the first and second

link plate portions

861, 862 in the third direction Y are smaller than those of the flat plate portion 860, and notches 869 are formed on both sides of the first and second

link plate portions

861, 862. As shown in fig. 3 and 4, the first connector plate portion 861 extends toward the other side Z2 in the first direction Z through the first opening 601 of the holder 60 on one side X1 in the second direction X with respect to the coil 7, and the second connector 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 the present 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, an end 861a of the other side Z2 of the first link plate portion 861 in the first direction Z overlaps the first side surface 871 of the flat plate portion 870 of the second yoke 87, and the first link plate portion 861 and the first side surface 871 of the second yoke 87 are welded. Similarly, an end 862a of the other side Z2 of the second link plate portion 862 in the first direction Z overlaps the second side surface 872 of the flat plate portion 870 of the second yoke 87, and the second link plate portion 862 and the second side surface 872 of the second yoke 87 are welded.

A projection that is fitted into and welded to the recess formed in the other is formed on one of the end portion 861a and the first side surface 871 of the first connecting plate portion 861, and a projection that is fitted into and welded to the recess formed in the other is formed on one of the end portion 862a and the second side surface 872 of the second connecting plate portion 862. In the present embodiment, convex portion 873 formed on flat plate portion 870 is fitted into and welded to concave portion 863 formed at end 861a of first connecting plate portion 861, and convex portion 874 formed on flat plate portion 870 is fitted into and welded to concave portion 864 formed at end 862a of second connecting plate portion 862.

In the present embodiment,

notches

860a and 870a for positioning the first and

second yokes

86 and 87 when the magnet 8 is attached are formed at the end portions in the third direction Y of the

flat plate portion

860 and 870 of the first and

second yokes

86 and 87.

In movable body 3 configured as described above, at least one of first yoke 86 and magnet 8 is marked with a mark indicating the magnetization direction of magnet 8. For example, the first yoke 86 is marked with a mark 86S in which the corner on the side where the S pole is located among the four corners of the flat plate portion 860 is cut off, and the other corners are square. Further, a mark indicating the magnetization direction of the magnet 8 is also given to at least one of the second yoke 87 and the magnet 8. For example, the second yoke 87 is provided with a mark 87s in which the corner of the N pole side of the four corners of the flat plate 870 is cut off, and the other corners are formed in a square shape. Note that, when the magnet 8 is marked, printing or the like may be used.

(construction of positioning projections 865, 875)

The first yoke 86 has a positioning projection 865 formed by projecting a part of the first yoke 86 from one surface of the fixed magnet 8, and the first magnet 81 and the second magnet 82 are positioned in the in-plane direction of the flat plate portion 860 of the first yoke 86. In the present embodiment, the positioning projection 865 includes a first projection 865a defining a position on the second magnet 82 side of the first magnet 81 and a second projection 865b defining a position on the first magnet 81 side of the second magnet 82. In the present embodiment, first convex portion 865a and second convex portion 865b are constituted by a common convex portion 865c provided between first magnet 81 and second magnet 82. The convex portions 865c (the first convex portions 865a and the second convex portions 865b) are provided at two locations separated in the third direction Y.

The positioning projection 865 further includes third projections 865d, 865e which perform positioning of the first magnet 81 and positioning of the second magnet 82 in a third direction Y intersecting the second direction X adjacent to the first magnet 81 and the second magnet 82. In this embodiment, the third protruding portions 865d are provided at two positions on both sides of the first magnet 81 in the Y direction, and the third protruding portions 865e are provided at two positions on both sides of the second magnet 82 in the Y direction.

The positioning projection 865 is a projection that projects a part of the flat plate portion 860 of the first yoke 86 from the other surface side opposite to the magnet 8 toward the one surface side where the magnet 8 is located. Therefore, as shown in fig. 4, concave marks 865x when the positioning projections 865 are formed remain on the other surface of the flat plate portion 860 of the first yoke 86 on the side opposite to the magnet 8.

Here, in the first yoke 86, the positioning projection 865 is not provided on the side opposite to the second magnet 82 with respect to the first magnet 81 and on the side opposite to the first magnet 81 with respect to the second magnet 82. In addition, the dimension of the positioning projecting portion 865 projecting from the flat plate portion 860 is lower than the thickness of the magnet 8 (the thickness of the first magnet 81 and the thickness of the second magnet 82). Therefore, when the magnet 8 is attached to the flat plate portion 860 of the first yoke 86, the magnet 8 positioned at the lowermost position among the plurality of magnets 8 stacked inside the magnet box or the like is slid, and when the magnet is disposed as the first magnet 81 or the like, the positioning convex portion 865 and the magnet box are less likely to interfere with each other, and the positioning convex portion 865 does not become an obstacle.

Although not shown, the second yoke 87 also has a positioning protrusion portion, which is similar to the first yoke 86, in which a part of the second yoke 87 protrudes from one surface of the fixed magnet 8 to position the first magnet 83 and the second magnet 84 in the in-plane direction of the flat plate portion 870 of the second yoke 87. Therefore, as shown in fig. 8, a recessed mark 875x when the positioning convex portion 875 is formed remains on the other surface of the flat plate portion 870 of the second yoke 87 on the opposite side from the magnet 8.

The positioning projection 865 may be formed by bending a part of the first and

second yokes

86 and 87.

(constitution of stopper)

As shown in fig. 2, in the present embodiment, the first wall portion 161 of the first casing member 16, the first wall portion 61 of the holder 60, and the inner surface of the first wall portion 171 of the second casing member 17 face each other on one side X1 in the second direction X with respect to the first connection plate portion 861 for the first yoke 86 of the movable body 3, so as to form a continuous plane. Therefore, the first link plate portion 861 constitutes a first stopper that limits the movable range of the movable body 3 to the side X1 in the second direction X when the movable body 3 moves to the side X1 in the second direction X.

Similarly, the second wall portion 162 of the first case member 16, the second wall portion 62 of the holder 60, and the inner surface of the second wall portion 172 of the second case member 17 face the second web portion 862 on the other side X2 in the second direction X in a state of constituting a continuous plane. Therefore, the second web 862 constitutes a second stopper that restricts the movable range of the movable body 3 to the other side X2 in the second direction X when the movable body 3 moves to the other side X2 in the second direction X.

(basic action)

In the actuator 1 of the present embodiment, when an alternating current is applied to the coil 7, the center of gravity of the actuator 1 fluctuates in the second direction X because the movable body 3 vibrates in the second direction X. Therefore, the user can feel the vibration in the second direction X. Therefore, the actuator 1 can be made to function as a haptic device. At this time, if the ac waveform applied to coil 7 is adjusted so that the acceleration at which movable body 3 moves to one side X1 of second direction X and the acceleration at which movable body 3 moves to the other side X2 of second direction X are different, the user can feel the vibration having directivity in second direction X.

(constitution of the connecting body 90 and the viscoelastic member 9)

As shown in fig. 2, 4 and 5, a connecting body 90 connected to the support 2 and the movable body 3 is provided. The connecting body 90 has at least one of elasticity and viscoelasticity. In the present embodiment, the connecting body 90 is a viscoelastic member 9 provided at a portion where the support 2 and the movable body 3 face each other in the first direction Z, and is elastically deformable in the first direction Z, the second direction X, and the third direction Y. Viscoelasticity is a property that combines both viscosity and elasticity, and is a property that is remarkably exhibited by a gel-like material, a polymer substance such as plastic or rubber. Therefore, various gel-like materials can be used as the viscoelastic material 9. As the viscoelastic member 9, various rubber materials such as 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-diene rubber, urethane rubber, silicone rubber, fluororubber, etc.), thermoplastic elastomer, etc., and modified materials thereof can be used.

In the present embodiment, as the connecting body 90, only the viscoelastic member 9 is connected to both the support body 2 and the movable body 3. In the present 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 housing member 16 of the support 2 face each other in the first direction Z, and the second viscoelastic member 92 is disposed at a position where the second yoke 87 of the movable body 3 and the second housing member 17 of the support 2 face each other in the first direction Z. More specifically, the first viscoelastic member 91 is disposed between the flat plate portion 860 of the first yoke 86 and the bottom portions of the

recesses

166 and 167 of the first case member 16, respectively, and the second viscoelastic member 92 is disposed between the flat plate portion 870 of the second yoke 87 and the bottom portions of the

recesses

176 and 177 of the second case member 17, respectively.

Here, the first viscoelastic member 91 is disposed between the flat plate portion 860 of the first yoke 86 and the bottom portions of the

recesses

166 and 167 of the first case member 16 in a state compressed in the first direction Z, and the second viscoelastic member 92 is disposed between the flat plate portion 870 of the second yoke 87 and the bottom portions of the

recesses

176 and 177 of the second case member 17 in a state compressed in the first direction Z. The first viscoelastic member 91 is bonded to the surface (bottom portions of the

recesses

166 and 167 of the first case member 16) that contacts the support 2, and is bonded to the surface (first yoke 86) that contacts the movable body 3. The second viscoelastic member 92 is bonded to the surface (bottom of the

concave portions

176 and 177 of the second case 17) contacting the support 2 and is bonded to the surface (second yoke 87) contacting the movable body 3.

In the present embodiment, the viscoelastic member 9 (the first viscoelastic member 91 and the second viscoelastic member 92) is a silicone gel having a penetration degree of 10 to 110 degrees. The penetration is defined in JIS-K-2207 and JIS-K-2220, meaning that the smaller the value, the harder the value. The viscoelastic member 9 has linear or nonlinear expansion and contraction characteristics depending on the expansion and contraction direction thereof. For example, the viscoelastic member 9 has an expansion/contraction characteristic in which a nonlinear component (spring constant) is larger than a linear component (spring constant) when it is compressed and deformed in the thickness direction (axial direction). On the other hand, when stretched by being stretched in the thickness direction (axial direction), the elastic member has an expansion and contraction characteristic in which a linear component (spring constant) is larger than a nonlinear component (spring constant). On the other hand, when the viscoelastic member 9 deforms in a direction (shearing direction) intersecting the thickness direction (axial direction), as in the present embodiment, the deformation in the direction in which the member is stretched is performed regardless of the direction of movement, and therefore, the member has a deformation characteristic in which the linear component (spring constant) is larger than the nonlinear component (spring constant). Therefore, in the viscoelastic member 9, the elastic force in the moving direction is constant. Therefore, as in the present embodiment, by using the spring element in the shearing direction of the viscoelastic member 9, the reproducibility of the vibration acceleration with respect to the input signal can be improved, and therefore, vibration having a fine difference can be realized.

In the present embodiment, a plurality of recesses are formed in the

recesses

166 and 167 of the first casing member 16 in the

connection regions

166a and 167a to which the first viscoelastic member 91 is connected. In addition, a plurality of concave portions are formed in the

concave portions

176 and 177 of the second casing member 17 in the

connection regions

176a and 177a to which the second viscoelastic member 92 is connected.

In addition, since the connecting body 90 is in a state of being compressed in the first direction Z, a part of the connecting body 90 is positioned inside the plurality of concave portions. Therefore, the edges of the plurality of concave portions suppress the connected body 90 from moving in a direction intersecting the first direction Z. Therefore, when the connecting body 90 is disposed between the support 2 and the movable body 3, the edges of the plurality of concave portions effectively suppress the connecting body 90 from moving in a direction intersecting the first direction Z. In addition, the edges of the plurality of recesses effectively inhibit the connected body 90 from moving in the second direction X when the movable body 3 is driven in the second direction X. Therefore, the displacement of the connecting body 90 disposed between the support 2 and the movable body 3 can be suppressed. The connection body 90 is fixed to the

connection regions

166a, 167a, 176a, and 177a via an adhesive, and a part of the adhesive is positioned inside the plurality of concave portions. Therefore, the adhesive strength of the connected body 90 is high.

(treatment of the end portions of the wiring board 15 and the coil 7)

Fig. 9 is an explanatory view of the engaging convex portion 69 shown in fig. 6 and the like. Fig. 10 is an explanatory view of the projecting portion 691 of the engaging projecting portion 69 shown in fig. 9, and is a cross-sectional view of the engaging projecting portion 69 cut at the projecting portion 691. Fig. 11 is an explanatory view of the engaging hole 159 shown in fig. 6 and the like. Fig. 12 is an explanatory diagram illustrating a state in which the engaging convex portion 69 illustrated in fig. 9 is fitted into the engaging hole 159 at the third position P3. Fig. 13 is an explanatory diagram showing a positional relationship between the engaging convex portion 69 and the engaging hole 159 when the wiring board 15 shown in fig. 9 is moved to the second position. Fig. 14 is an explanatory diagram illustrating a state in which the wiring board 15 shown in fig. 11 is held by the holder 60 at the first position P1. Fig. 15 is a cross-sectional view showing a gap between the wiring board 15 and the third wall 63 of the holder 60 shown in fig. 5 and the like.

As shown in fig. 5, 6, and 7, the wiring board 15 is held on the side surface of the support 2. More specifically, the wiring board 15 is fixed to the third wall portion 63 (the side surface of the support body 2) of the holder 60. In the third wall portion 63, a recessed portion 630 recessed toward the other side Y2 in the third direction Y extends in the second direction X, and a plurality of notch-shaped lead-out portions 68 for leading out end portions 705 of the coil wire to the bottom surface of the recessed portion 630 are formed in the bottom portion of the recessed portion 630 in the second direction. Further, a portion of concave portion 630 sandwiched by lead portions 68 is a concave portion 630a recessed further toward the other side in third direction Y from the bottom of concave portion 630.

A plurality of engaging convex portions 69 are formed along the second direction X at the bottom of the concave portion 630, and the engaging convex portions 69 project to one side Y1 of the third direction Y at positions shifted from the concave portions 630a in the second direction. In the present embodiment, the engaging convex portions 69 are formed at three locations.

A notch 158 is formed in the wiring board 15 at a portion overlapping the lead portion 68. In addition, a plurality of engagement holes 159 are formed in the wiring board 15 at portions overlapping the engagement convex portions 69. In the present embodiment, three engagement holes 159 are formed as the plurality of engagement holes 159 along the second direction X corresponding to the number of the engagement convex portions 69. Of the three engaging holes 159, the central engaging hole 159 is formed in a notch shape that is continuous with the notch 158.

The wiring board 15 is held on the outer surface of the third wall portion 63 of the holder 60 by plastically deforming the engaging convex portion 69 in a state where the engaging convex portion 69 is fitted into the engaging hole 159. The wiring board 15 is fixed by an adhesive filled between the wiring board 15 and the outer surface of the third wall 63 of the holder 60.

The wiring substrate 15 is provided with a first land 151 to which an end portion 705 of the first coil 71 and an end portion 705 of the second coil 72 are electrically connected, and a second land 152 to which an external wiring member (not shown) is electrically connected, and the end portion 705 of the first coil 71 and the end portion 705 of the second coil 72 are passed through the lead portion 68 to the first land 151, and then electrically connected to the first land 151 by solder. The first pads 151 and the second pads 152 are connected via wiring patterns (not shown).

In the present embodiment, three first lands 151 are formed, and an end portion 705 where the winding of the first coil 71 is completed and an end portion 705 where the winding of the second coil 72 is started are electrically connected to the first land 151 at the center. Therefore, the first coil 71 and the second coil 72 are electrically connected in series. The first coil 71 and the second coil 72 may be electrically connected in parallel.

Here, slack is provided between the first coil 71 and the end 705 connected to the wiring board 15. When the slack is provided, in the present embodiment, as described below with reference to fig. 9 to 14, a clearance is provided between the engaging convex portion 69 and the inner edge of the engaging hole 159, and the clearance enables the wiring board 15 to move linearly in the first direction (movable direction) along the third wall portion 63 from the first position P1 (see fig. 14) where the wiring board 15 is held by the third wall portion 63 toward the second position (see fig. 13) where the positions of the first land 151 and the drawn-out portion 68 are separated. Therefore, when the wiring board 15 is at the second position P2 (see fig. 13), the first land 151 and the end 705 are connected by solder, and then the wiring board 15 is moved to the first position P1 (see fig. 14), slack can be provided between the coil 7 and the end 705 connected to the wiring board 15.

First, as shown in fig. 9 and 10, the engaging convex portion 69 includes a projecting portion 691 projecting outward from the third wall portion 63, and a flange portion 692 projecting from the projecting portion 691 in a direction orthogonal to the projecting direction of the projecting portion 691 at a distal end portion of the projecting portion 691.

As shown in fig. 11, an engagement hole 159 through which the flange 692 can pass is formed in the wiring board 15. In the present embodiment, when the engaging hole 159 is viewed from a direction perpendicular to the third wall portion 63, the engaging hole 159 has a shape in which a first hole 159a and a second hole 159b smaller than the first hole 159a are connected to each other. Each of the first hole 159a and the second hole 159b has a shape having

curved portions

159c and 159d curved outward in an arc shape at both ends in the second direction X orthogonal to the movable direction (first direction Z) of the wiring board 15. An end of the first hole 159a on one side Z1 in the first direction Z is a straight line 159e extending straight in the second direction X.

As shown in fig. 9 and 10, the width of the protruding portion 691 in the movable direction (first direction Z) of the wiring substrate 15 is smaller than the first hole 159a and the second hole 159 b. The flange portion 692 has a shape in which a third portion 692a having substantially the same size as the first hole portion 159a and a fourth portion 692b having substantially the same size as the second hole portion 159b are connected to each other.

The fourth portion 692b has bent portions 692d bent outward in an arc shape at both ends in the second direction X orthogonal to the movable direction (first direction Z) of the wiring board 15. The third portion 692a includes a curved portion 692c curved outward in an arc shape and a straight portion 692f extending linearly from the curved portion 692c to the side opposite to the fourth portion 692b at both ends in the second direction X orthogonal to the movable direction (first direction Z) of the wiring board 15. An end of one side Z1 of the third portion 692a in the first direction Z is a straight portion 692e extending in a straight line in the second direction X. In addition, an end of the fourth portion 692b on the other side Z2 in the first direction Z is a straight portion 692g extending in a straight line in the second direction X.

The protruding part 691 has a curved portion 691a located on the other side Z2 of the first direction Z and a straight portion 691b extending from the curved portion 691a to one side Z1 of the first direction Z, and an end of one side Z1 of the first direction Z of the protruding part 691 is a straight portion 691e extending in a straight line in the second direction X.

In the step of processing the end portion of the coil 7 in the manufacturing process of the actuator 1, first, as shown in fig. 12, the wiring board 15 is disposed at a third position P3 where the flange portion 692 faces the engagement hole 159, and the flange portion 692 is passed through the engagement hole 159. In this state, the wiring board 15 is positioned between the flange 692 and the third wall 63. The wiring board 15 can move in the first direction Z with the protruding portion 691 fitted in the engaging hole 159.

Next, as shown in fig. 13, the wiring board 15 is moved to the second position P2 on the other side Z2 in the first direction Z so that the lead portion 68 and the first land 151 are separated from each other, the end portion 705 and the first land 151 are connected by solder, and then the excess portion of the end portion 705 is cut off. Here, the movable range of the wiring board 15 toward the second position P2 is limited by the abutment of the protruding portion 691 against the inner peripheral surface of the engagement hole 159. At this time, portions where the protruding portion 691 and the inner peripheral surface of the engagement hole 159 abut against each other are

straight portions

691e, 159 e. In this state, the flange 692 overlaps the wiring board 15 from the side opposite to the third wall 63, and therefore the posture of the wiring board 15 is maintained.

Next, as shown in fig. 14, the wiring board 15 is moved to the first position P1 on the first direction Z1 side so that the lead portions 68 and the first lands 151 approach each other. As a result, slack is provided between the coil 7 and the end 705 connected to the wiring board 15. Here, the movable range of the wiring board 15 toward the first position P1 is limited by the abutment of the protruding portion 691 against the inner peripheral surface of the engagement hole 159. At this time, the portions where the protruding portion 691 and the inner peripheral surface of the engagement hole 159 abut against each other are

bent portions

691a, 159 d. In this state, the flange 692 overlaps the wiring board 15 from the side opposite to the third wall 63, and therefore the posture of the wiring board 15 is maintained.

Next, the engaging convex portion 69 is plastically deformed by hot pressing the engaging convex portion 69, and the wiring board 15 is held by the third wall portion 63. Further, an adhesive is filled in the gap between the wiring board 15 and the third wall portion 63, and the wiring board 15 and the third wall portion 63 are fixed by the adhesive. At this time, as shown in fig. 15, a gap G is provided between the wiring board 15 and the third wall portion, the gap extending from one direction (one side Z1 in the first direction Z) to the other direction (the other side Z2 in the first direction Z). Therefore, the opening width of the gap G is wide at the other side Z2 in the first direction Z, and therefore, the adhesive can be easily filled between the wiring board 15 and the third wall portion.

(Assembly Process of actuator 1)

In the present embodiment, when the first housing member 16, the first yoke 86, the holder 60, and the second yoke 87 are overlapped in the first direction Z while supporting the first yoke 86 by a support pin (not shown) inserted from the through hole 16b of the first housing member 16, the through hole 16a of the first housing member 16, the notch 869 of the first yoke 86, the notch 603 of the holder 60, and the notch 879 of the second yoke 87 are overlapped with reference to a positioning pin inserted from the through hole 16 a. Therefore, the first case member 16, the first yoke 86, the holder 60, and the second yoke 87 can be appropriately overlapped.

At this time, the first connector plate portion 861 of the first yoke 86 is projected toward the other side Z2 in the first direction Z through the first opening 601 of the holder 60, and the second connector plate portion 862 is projected toward the other side Z2 in the first direction Z through the second opening 602 of the holder 60. Therefore, the first and second

connector plate portions

861, 862 of the first yoke 86 can be connected to the second yoke 87, respectively.

The first viscoelastic member 91 is connected to one of the first case member 16 and the first yoke 86 with an adhesive in advance, and when the first case member 16 and the first yoke 86 are superposed on each other, the first viscoelastic member 91 is connected to the other of the first case member 16 and the first yoke 86 with an adhesive. The second viscoelastic member 92 is connected to one of the second case 17 and the second yoke 87 with an adhesive in advance, and when the second case member 17 and the second yoke 87 are superposed on each other, the second viscoelastic member 92 is connected to the other of the second case member 17 and the second yoke 87 with an adhesive. At this time, the support pin inserted from the through hole 16b is brought into contact with the notch 17b of the second case member 17 to support the second case member 17.

(main effect of the present embodiment)

As described above, in the actuator 1 of the present embodiment, as shown in fig. 5, the wiring board 15 is provided along the side surface of the support body 2 (the third wall portion 63 of the holder 60), and therefore the wiring board 15 does not protrude. Therefore, when the actuator 1 is mounted to various apparatuses or the like, a waste space is not easily generated.

As described with reference to fig. 9 to 14, etc., even in a state where the engaging convex portion 69 is fitted into the engaging hole 159, the wiring board 15 can be moved to the first position P1 and the second position P2, and therefore, when the wiring board 15 is at the second position P2, the end portion 705 of the coil wire is connected to the first land 151 of the wiring board 15, and thereafter, the wiring board 15 is moved to the first position P1, so that slack of the coil wire can be applied between the coil 7 and the end portion 705. Therefore, disconnection of the coil wire can be suppressed. In addition, since the engagement convex portion 69 is fitted into the engagement hole 159 during the above operation, the movable range of the wiring board 15 is restricted, and the engagement hole 159 and the engagement convex portion 69 function as guides. Therefore, the wiring board 15 can be easily moved from the second position P2 at which the end 705 of the coil wire is connected to the first land 151 to the first position P1 at which the coil wire is slackened.

Further, when the wiring board 15 is at the first position P1 and the second position P2, the flange portion 692 of the engaging convex portion 69 suppresses the engaging convex portion 69 from coming off the engaging hole 159, and therefore, the wiring board 15 can be easily moved from the second position P2 at which the end portion 705 of the coil wire and the first land 151 are connected to the first position P1 at which slack is given to the coil wire.

[ other embodiments ]

Although the embodiment described above has shown the mode in which the coil 7 and the wiring board 15 are held by the support 2, the present invention can be applied to the case in which the coil 7 and the wiring board 15 are held by the movable body 3.

In the above embodiment, two magnets 8 (the first magnet 81 and the second magnet 82) are provided, but the present invention can also be applied to a case where the magnets 8 are disposed only on one side Z1 in the first direction Z with respect to the coil 7 and the second yoke 87 is present only on the other side Z2 in the first direction Z, for example.

In the above embodiment, a gel-like member such as a silicone gel is used as the viscoelastic member 9, but rubber or the like may be used as the viscoelastic member. In the above embodiment, the viscoelastic member 9 is used as the connecting body 90, but an elastic member such as a spring may be used.

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, but the present invention can also be applied to a case where the coil and the holder are provided on the movable body 3, and the magnet and the yoke are provided on the support 2. In the above embodiment, the present invention is applied to actuator 1 that drives movable body 3 only in second direction X, but the present invention may also be applied to actuator 1 that drives movable body 3 in second direction X and third direction Y.

Claims

1. An actuator, comprising:

a support;

a movable body;

a magnetic drive circuit including a coil provided on one of the support and the movable body and configured to move the movable body relative to the support; and

a wiring board which is held by the one-side member so as to be along a side surface of the one-side member and has a land connected to an end portion of a coil wire constituting the coil,

a lead-out portion for leading out the end portion to the side surface and an engaging projection portion projecting from the side surface are formed on the one side member,

an engaging hole into which the engaging convex portion is fitted is formed in the wiring board,

a play is provided between the engagement convex portion and an inner edge of the engagement hole, the play being capable of linearly moving the wiring board along the side surface from a first position where the wiring board is held on the side surface toward a second position where the pad and the lead-out portion are separated from each other, thereby imparting slack to the coil wire between the coil and the end portion when the wiring board is at the first position.

2. The actuator of claim 1,

the engaging convex portion has a protruding portion protruding from the side surface and a flange portion protruding from the protruding portion in a direction orthogonal to a protruding direction of the protruding portion at a distal end portion of the protruding portion,

the flange portion is capable of passing through the engagement hole when the wiring board is at a third position between the first position and the second position,

in the first position and the second position, a part of the flange portion overlaps the wiring board from a side opposite to the side surface in a state where the protruding portion is fitted into the engagement hole.

3. The actuator of claim 2,

when the engaging hole and the engaging protrusion are viewed from a direction orthogonal to the side surface,

the engaging hole has a shape in which a first hole portion and a second hole portion smaller than the first hole portion are connected,

wherein a width of the protruding portion in a direction orthogonal to a movable direction of the first position and the second position of the wiring board is smaller than a width of the first hole and a width of the second hole,

the flange portion has a shape in which a third portion having substantially the same size as the first hole portion and a fourth portion having substantially the same size as the second hole portion are connected to each other,

the movable range of the wiring board toward the second position and the movable range of the wiring board toward the first position are restricted by the contact of the protruding portion with the inner peripheral surface of the engagement hole.

4. The actuator of claim 3,

the first hole portion, the second hole portion, and the fourth portion each have a shape in which both end portions located in a direction orthogonal to the movable direction are curved,

the third portion includes a curved portion that is curved in substantially the same shape as the first hole portion on the third portion side and a straight portion that extends in a straight line from the curved portion to a side opposite to the fourth portion on both end portions of the third portion in a direction orthogonal to the movable direction.

5. The actuator of claim 3,

a portion where the protruding portion abuts against the inner peripheral surface of the engaging hole is a straight portion when the wiring board is moved to the second position,

when the wiring board is moved to the first position, a portion where the protruding portion abuts against the inner peripheral surface of the engagement hole is a bent portion.

6. The actuator of claim 4,

7. An actuator according to any of claims 1 to 6,

the plurality of engagement holes and the plurality of engagement protrusions are provided along a direction orthogonal to a movable direction of the first position and the second position of the wiring board.

8. An actuator according to any of claims 1 to 6,

the wiring board is held on the side surface by plastically deforming the engaging convex portion.

9. An actuator according to any of claims 1 to 6,

the wiring board and the side surface are fixed by an adhesive.

10. An actuator according to claim 9 when dependent on claim 3,

a gap is provided between the wiring board and the side surface, the gap extending from one side of the movable direction to the other side of the movable direction,

the gap is filled with the adhesive.

11. An actuator according to any of claims 1 to 6,

the coil and the wiring board are provided on the support side.

12. The actuator of claim 11,

the support body includes a holder that holds the coil and the wiring board.

13. A method of manufacturing an actuator according to any one of claims 1 to 12,

the end portion and the land are connected when the wiring board is at the second position, and then the wiring board is moved to the first position to apply slack to the coil wire between the coil and the end portion.

14. A haptic device is characterized by comprising:

a support;

a movable body;

a magnetic drive circuit that includes a coil provided on one of the support and the movable body and that moves the movable body relative to the support; and

a clearance is provided between the engaging projection and an inner edge of the engaging hole, the clearance enabling the wiring board to move linearly along the side surface from a first position where the wiring board is held on the side surface toward a second position where the pad and the lead-out portion are separated from each other, thereby giving slack to the coil wire between the coil and the end portion when the wiring board is at the first position.