JP2020162393A - Actuator - Google Patents

Abstract

To provide an actuator capable of easily securing a movement distance of a mobile body.SOLUTION: An actuator 1 comprises a support body 2, a mobile body 6, and a magnet drive circuit 1a oscillating the mobile body 6 in a second direction X. The magnet drive circuit 1a comprises a coil 5 provided in the support body 2, and a magnet 7 facing the coil 5 in a first direction Z. The mobile body 6 comprises the magnet 7, and a yoke 8 holding the magnet 7. The yoke 8 is made of a magnetic material, and comprises a first plate part 811 and a second plate part 821 facing in the first direction Z across the coil 5 and the magnet 7, and a pair of connection parts 88 facing in a third direction Y across the coil 5 and the magnet 7. A movement distance of the mobile body 6 can be secured because the pair of connection parts 88 are not provided at both ends in a second direction X of the mobile body 6.SELECTED DRAWING: Figure 4

Description

The present invention relates to an actuator that vibrates a movable body.

An actuator used as a device for notifying information by vibration is disclosed in Patent Document 1. The actuator of Patent Document 1 includes a movable body provided with a permanent magnet and a support provided with a coil. The movable body includes a first yoke and a second yoke facing each other in a direction orthogonal to the vibration direction, and a permanent magnet and a coil are arranged between the first yoke and the second yoke. The permanent magnet includes a first magnet fixed to the first yoke and a second magnet fixed to the second yoke. The first magnet and the second magnet face the coil in a direction orthogonal to the vibration direction.

In the actuator of Patent Document 1, the first yoke includes a first plate portion that holds the first magnet and a pair of connecting portions that bend and extend from both ends of the first plate portion in the vibration direction toward the second yoke, respectively. .. Both ends of the second yoke in the vibration direction are fixed to the tips of the pair of connecting portions. Each connection has a wall shape perpendicular to the vibration direction.

JP-A-2019-13095

When the movable body has wall-shaped parts (a pair of connecting parts) perpendicular to both ends in the vibration direction, there is a problem that the moving distance of the movable body is limited by the thickness of the two wall-shaped parts. is there.

In view of the above problems, an object of the present invention is to provide an actuator in which it is easy to secure a moving distance of a movable body.

In order to solve the above problems, the actuator of the present invention includes a support, a movable body, a connection body connected to the movable body and the support body, and a magnetic drive circuit for moving the movable body. The magnetic drive circuit is provided on a coil provided on one side member of the support and the movable body, and is provided on the other side member of the support and the movable body and faces the coil. The connecting body is provided with at least one of elastic and viscous elasticity, and the direction in which the coil and the magnet face each other is the first direction, and the moving direction of the movable body is the second direction. When the direction orthogonal to the first direction and the second direction is set to the third direction, the movable body has the first plate portion and the second plate portion facing each other in the first direction with the coil and the magnet sandwiched therein. It is characterized by including a pair of connecting portions for connecting the first plate portion and the second plate portion so as to face each other in the third direction with the coil and the magnet interposed therebetween.

According to the present invention, the first plate portion and the second plate portion are connected by a connecting portion provided in a third direction orthogonal to the moving direction of the movable body. As a result, it is not necessary for the movable body to have wall-shaped portions perpendicular to both ends in the moving direction, so that the moving distance of the movable body can be secured by that much.

In the present invention, the first plate portion and the second plate portion may be made of a magnetic material. If the first plate portion and the second plate portion facing each other in the first direction with the coil and the magnet sandwiched between them are made of magnetic materials, the first plate portion and the second plate portion function as yokes. As a result, the generation of leakage flux can be suppressed, so that it becomes easy to secure the driving force of the magnetic drive circuit.

In the present invention, each of the pair of the connecting portions includes a first connecting portion integrally formed with the first plate portion and a second connecting portion integrally formed with the second plate portion. It is desirable that the first connecting portion and the second connecting portion have a symmetrical shape with respect to a plane perpendicular to the first direction. Further, a member that surrounds the magnet and the coil from one side in the first direction (a member composed of a first plate portion and a first connection portion) and a member that surrounds the magnet and the coil from the other side in the first direction (second plate). The member formed by the portion and the second connecting portion) can have the same shape. Therefore, parts can be shared and the number of parts can be reduced.

In the present invention, the pair of the connecting portions may be formed integrally with the first plate portion or the second plate portion. If the connecting portion is integrated with the first plate portion or the second plate portion, the number of parts can be reduced as compared with the case where the connecting portion is separate from the first plate portion and the second plate portion. it can.

In the present invention, the pair of the connecting portions may be separate from the first plate portion and the second plate portion. If the connecting portion is made of a member different from the first plate portion and the second plate portion, the degree of freedom in the shape of the parts of the connecting portion is increased.

In the present invention, the support may include the coil, and the movable body may include the magnet. If the coil is provided on the support, wiring to the coil becomes easier as compared with the case where the coil is provided on the movable body. In addition, no load is generated due to deformation of the wiring to the coil when the movable body moves.

In the present invention, the support includes a coil holder for holding the coil, and the first plate portion and the second plate portion sandwich the coil holder from both sides in the first direction, and the coil holder. Is provided with a pair of elongated holes extending in the second direction at a position overlapping the pair of the connecting portions when viewed from the first direction, and each connecting portion is movable in the second direction. It can penetrate an elongated hole. In this way, the movable range of the movable body in the second direction can be defined by the contact between the connecting portion and the inner wall surface of the elongated hole.

In the present invention, the power feeding board is provided, the power feeding board is arranged on one side of the movable body in the third direction, and the coil wire drawn from the coil is the said one of the pair of elongated holes. It can be connected to the power feeding board via the second direction of the elongated hole located on one side of the third direction. In this way, since the power feeding board is arranged in the third direction orthogonal to the moving direction of the movable body, the moving distance of the movable body is not limited by the power feeding board. Further, in this way, it is possible to prevent the coil wire drawn from the coil and connected to the power feeding board from interfering with the movable body.

In the present invention, the power feeding board may be provided, and the power feeding board may be arranged on one side of the support in the second direction.

In the present invention, the first plate portion and the second plate portion of the movable body are connected by a connecting portion provided in a third direction orthogonal to the moving direction. As a result, it is not necessary for the movable body to have wall-shaped portions perpendicular to both ends in the moving direction, so that the moving distance of the movable body can be secured by that much. Further, since it is not necessary for the movable body to have wall-shaped portions perpendicular to both ends in the moving direction, the area of the portion that pushes air when the movable body vibrates can be reduced. Therefore, it is possible to reduce the operating noise caused by the air being pushed when the movable body moves.

It is external perspective view of the actuator to which this invention is applied. It is sectional drawing AA of the actuator of FIG. It is an exploded perspective view of an actuator. It is an exploded perspective view of the actuator with the case removed. It is an exploded perspective view which looked at the support from the other side of the 1st direction. It is an exploded perspective view which looked at the support from one side of the 1st direction. It is BB sectional view of the actuator of FIG.

Hereinafter, embodiments of the actuator of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view of an actuator 1 to which the present invention is applied. FIG. 2 is a cross-sectional view of the actuator 1 (AA cross-sectional view of FIG. 1). FIG. 3 is an exploded perspective view of the actuator 1. FIG. 4 is an exploded perspective view of the actuator 1 with the case 3 removed. FIG. 5 is an exploded perspective view of the support 2 as viewed from the other side Z2 in the first direction Z. FIG. 6 is an exploded perspective view of the support 2 as viewed from one side Z1 of the first direction Z. FIG. 7 is a cross-sectional perspective view (BB cross-sectional view of FIG. 1) of the actuator.

(overall structure)
As shown in FIGS. 1 and 2, the actuator 1 has a rectangular parallelepiped shape. The actuator 1 has a support 2 including a square case 3 or the like that defines the outer shape of the actuator 1, and a movable body 6 that is supported inside the case 3 so as to be relatively movable with respect to the support 2. The support 2 includes a case 3, a coil holder 4, a coil 5, and a power feeding board 10. The movable body 6 includes a magnet 7 and a yoke 8. The coil 5 and the magnet 7 face each other and form a magnetic drive circuit 1a for moving the movable body 6. The facing direction in which the coil 5 and the magnet 7 face each other is orthogonal to the moving direction in which the movable body 6 moves. Further, the actuator 1 includes connecting bodies 91 and 92 arranged between the movable body 6 and the support body 2. The movable body 6 is supported by the support body 2 via the connecting bodies 91 and 92. The connecting bodies 91 and 92 support the movable body 6 so as to be displaceable in the moving direction. Connections 91, 92 include at least one of elastic and viscoelastic.

In the following description, the three directions intersecting each other will be referred to as a first direction Z, a second direction X, and a third direction Y, respectively. In this example, the first direction Z, the second direction X, and the third direction Y are directions orthogonal to each other. The first direction Z is the opposite direction in which the coil 5 and the magnet 7 face each other. The second direction X is the moving direction of the movable body 6. The actuator 1 has its longitudinal direction oriented in the third direction Y. Further, in the following, Z1 is attached to one side of the first direction Z, Z2 is attached to the other side of the first direction Z, X1 is attached to one side of the second direction X, and the other side of the second direction X is attached. X2 will be attached to the side, Y1 will be attached to one side of the third direction Y, and Y2 will be attached to the other side of the third direction Y.

The actuator 1 notifies the user of information through the body of the user who uses the actuator 1 or the device to which the actuator 1 is attached by vibrating the movable body 6 in the second direction X. Therefore, the actuator 1 can be used as a tactile device that gives a tactile sensation to the user by the vibration of the movable body 6 in the second direction X, for example, on an operation member of a game machine, an operation panel, a steering wheel or a chair of an automobile, or the like. It can be incorporated and used. When the actuator 1 is used as a tactile device, for example, the acceleration applied by adjusting the AC waveform applied to the coil 5 to move the movable body 6 to one side X1 of the second direction X and the movable body 6 in the second direction By differentiating from the acceleration moving to the other side X2, the user can experience the directional vibration in the second direction X.

Here, in the magnetic drive circuit 1a of the actuator 1 to which the present invention is applied, the coil 5 is provided on the side of the support 2 (one side member), and the magnet is provided on the side of the movable body 6 (the other side member). It is possible to adopt an aspect in which the magnet 7 is provided on the side of the support 2 (the other side member) and the coil 5 is provided on the side of the movable body 6 (the other side member). In the embodiment described below, the one-side member that holds the coil 5 is the support 2, and the other-side member that holds the magnet 7 is the movable body 6.

(Movable body)
As shown in FIGS. 2 and 4, this example includes a first permanent magnet 71 and a second permanent magnet as the magnet 7. The first permanent magnet 71 faces the coil 5 on one side Z1 of the first direction Z, and the second permanent magnet 72 faces the coil 5 on the other side Z2 of the first direction Z. The first permanent magnet 71 and the second permanent magnet 72 are magnetized at poles on which one side X1 of the second direction X and the other side X2 of the second direction X are different, respectively.

The yoke 8 is made of a magnetic material. The yoke 8 holds the magnet 7. As shown in FIG. 3, the yoke 8 includes two members, a first yoke 81 and a second yoke 82. The first yoke 81 includes a flat plate-shaped first plate portion 811. The second yoke 82 includes a second plate portion 821 facing the first plate portion 811 in the first direction Z. The first plate portion 811 and the second plate portion 821 are substantially rectangular with the third direction Y as the longitudinal direction. The first permanent magnet 71 is fixed to the first plate portion 811. The second permanent magnet 72 is fixed to the second plate portion 821.

As shown in FIG. 4, the first yoke 81 includes a pair of overhanging portions 812 that project from the intermediate portion of the first plate portion 811 in the third direction Y to one side X1 and the other side X2 of the second direction X. The second yoke 82 includes a pair of overhanging portions 822 that project from the intermediate portion of the second plate portion 821 in the third direction Y to one side X1 and the other side X2 of the second direction X. As shown in FIG. 2, the first permanent magnet 71 is held on the surface of the first plate portion 811 on the other side Z2 in the first direction Z. Further, the second permanent magnet 72 is held on the surface of one side Z1 of the first direction Z of the second plate portion 821.

Further, the yoke 8 includes a pair of connecting portions 88 that connect the first plate portion 811 and the second plate portion 821 at two positions separated by a third direction Y. The pair of connecting portions 88 face each other in the third direction Y with the coil 5 and the magnet 7 interposed therebetween. Each connection portion 88 includes a first connection portion 88a extending from the ends of one side Y1 and the other side Y2 of the first plate portion 811 in the third direction Y to the other side Z2 in the first direction Z, and a second plate portion. Includes a second connection portion 88b extending from the ends of one side Y1 and the other side Y2 of the third direction Y of 821 to one side Z1 of the first direction Z, respectively. That is, the first connection portion 88a is integrally formed with the first plate portion 811. The second connecting portion 88b is integrally formed with the second plate portion 821. The end of the first direction Z of the first connection portion 88a on the other side Z2 of the first direction Z is fixed to the end of the second connection portion 88b on the other side Z1 of the first direction Z by welding.

(Support)
As shown in FIGS. 1 to 3, in the support 2, the case 3 that defines the outer shape of the actuator 1 is overlapped with the first case member 31 and the other side Z2 of the first case member 31 in the first direction Z. A second case member 32 is provided. A coil holder 4, a coil 5, and a movable body 6 are housed between the first case member 31 and the second case member 32. In the case 3, a pair of side plate portions 311 provided on both sides of the first case member 31 in the second direction X is covered with a pair of side plate portions 321 provided on both sides of the second case member 32 in the second direction X. It is assembled in a state of being. Both ends of the case 3 in the third direction Y are openings, and the power feeding board 10 is arranged in the openings on one side Y1 of the third direction Y.

The pair of side plate portions 311 of the first case member 31 are formed with notches 311a and 311b at both ends in the third direction Y. The pair of side plate portions 321 of the second case member 32 are formed with notches 321a and 321b at both ends in the third direction Y. Further, engaging holes 321d are formed at two positions of the side plate portion 321 of the second case member 32 that are separated from each other in the third direction Y.

As shown in FIG. 5, the coil holder 4 is a rectangle long in the third direction Y when viewed from the first direction Z. As shown in FIG. 3, on the side surface of one side X1 of the second direction X of the coil holder 4, convex portions 414e and 418e are formed at both ends of the third direction Y, and in the third direction Y, Engagement protrusions 414d and 418d are formed at two points apart from each other.

As shown in FIG. 1, in the case 3, the convex portions 414e and 418e of the coil holder 4 fit into the notch 311a of the first case member 31 and the notch 321a of the second case member 32, and the coil holder 4 The engaging protrusions 414d and 418d are assembled so as to be engaged with the engaging hole 321d of the second case member 32. Similarly, on the side surface of the coil holder 4 on the other side X2 of the second direction X, a convex portion that fits into the notch 311a of the first case member 31 and the notch 321a of the second case member 32 is formed. An engaging protrusion that is engaged with the engaging hole 321d of the second case member 32 is formed.

As shown in FIGS. 5 and 6, the coil 5 is an air-core coil having an annular planar shape wound in an oval shape. The coil 5 is held by the coil holder 4. The coil 5 has two long side portions 51 extending in parallel in the second direction X in the third direction Y and two arc-shaped short side portions 52 connecting both ends of the two long side portions 51 in the third direction Y. And have. When the movable body 6 and the support 2 are assembled, the first permanent magnet 71 faces the long side portion 51 of the coil 5 on one side Z1 of the first direction Z, and the first permanent magnet 71 faces the other side Z2 of the first direction Z. 2 Permanent magnets 72 face each other.

The coil holder 4 is a rectangle long in the third direction Y when viewed from the first direction Z. The coil holder 4 includes a plate portion 41 extending in the third direction Y at the center of the second direction X. A coil arrangement hole 410 is opened in the first direction Z in the central portion of the plate portion 41 in the third direction Y. The coil arrangement hole 410 is an oval through hole in which the coil 5 is arranged inside. Further, the plate portion 41 is provided with a pair of holder through holes 61 on both sides of the coil arrangement hole 410 in the third direction Y. The holder through hole 61 penetrates the coil holder 4 in the first direction Z. That is, the holder through hole 61 is opened in the first direction Z. Each of the pair of holder through holes 61 is an elongated hole extending in the second direction X.

The first plate 47 and the second plate 48 are attached to the coil holder 4 so as to overlap the plate portion 41 from one side Z1 and the other side Z2 of the first direction Z. The first plate 47 and the second plate 48 are made of a non-magnetic material. In this example, the first plate 47 and the second plate 48 are made of a non-magnetic stainless steel plate. The first plate 47 is provided with a pair of first plate-side through holes 62 that overlap each other of the pair of holder through holes 61 when stacked on the coil holder 4. The second plate 48 is provided with a pair of second plate-side through holes 63 that overlap each other of the pair of holder through holes 61 when stacked on the coil holder 4. The first plate side through hole 62 and the second plate side through hole 63 are elongated holes extending in the second direction X, respectively.

The coil holder 4 includes cutout portions 42, 43 in which the edges on both sides of the plate portion 41 in the second direction X are cut out inward. The cutout portions 42 and 43 are provided in the intermediate portion of the plate portion 41 in the third direction Y.

The coil holder 4 projects from the edge of one side Y1 of the third direction Y of the plate portion 41 toward one side Z1 of the first direction Z at one side Y1 of the third direction Y of the notches 42 and 43. A side plate portion 413 is provided. Further, the coil holder 4 has an edge of one side X1 of the second direction X of the plate portion 41 and an edge of the other side X2 of the second direction X at one side Y1 of the third direction Y of the cutout portions 42 and 43. A side plate portion 414, 415 projecting toward one side Z1 of the first direction Z and the other side Z2 is provided. Further, the coil holder 4 is formed on the other side Y2 of the notch portions 42, 43 in the third direction Y, from the edge of the other side Y2 of the plate portion 41 in the third direction Y to one side Z1 of the first direction Z and the other. A side plate portion 417 that protrudes toward the side Z2 is provided. Further, the coil holder 4 has an edge of one side X1 of the second direction X of the plate portion 41 and an edge of the other side X2 of the second direction X in the other side Y2 of the notch portions 42 and 43 in the third direction Y. The side plate portions 418 and 419 projecting from one side Z1 of the first direction Z and toward the other side Z2 are provided.

The first plate 47 has a claw portion 472 that projects diagonally from both sides of the second direction X to one side Z1 of the first direction Z. Further, the second plate 48 has a claw portion 482 that obliquely protrudes from both sides of the second direction X to the other side Z2 of the first direction Z. The claw portion 482 elastically contacts the inside of the groove-shaped recesses formed on the inner surfaces 414s, 415s, 418s, and 419s of the side plate portions 414, 415, 418, and 419, and is held by the coil holder 4.

The coil 5 is fixed to the coil holder 4 with an adhesive. The adhesive is filled in the air core portion 50 of the coil 5 and flows between the coil 5 and the coil holder 4 to be cured. Further, the adhesive is used between the coil 5 and the first plate 47, between the first plate 47 and the coil holder 4, between the coil 5 and the second plate 48, and between the second plate 48 and the coil holder 4. It flows between and hardens. Therefore, the coil 5, the first plate 47, the second plate 48, and the coil holder 4 are fixed by the adhesive layer 9 (see FIG. 2) in which the adhesive has flowed and hardened.

(Connector)
The movable body 6 is movably supported in the second direction X by the connecting bodies 91 and 92 provided between the movable body 6 and the support body 2. As shown in FIGS. 2 and 4, the connecting body 91 is provided at a portion where the first yoke 81 and the first plate 47 face each other in the first direction Z. Further, the connecting body 92 is provided at a portion where the second yoke 82 and the second plate 48 face each other in the first direction Z. More specifically, the connecting bodies 91 and 92 are arranged on both sides of the coil arrangement hole 410 in the third direction Y. That is, the connecting bodies 91 and 92 are located between the coil arrangement hole 410 and the holder through hole 61 located on one side Y1 of the third direction Y, and on the other side Y2 of the coil arrangement hole 410 and the third direction Y. It is arranged between the holder through hole 61 and the holder through hole 61. In this example, both sides of the connecting bodies 91 and 92 in the first direction Z are connected to the movable body 6 and the support 2 by a method such as adhesion. Further, the connecting bodies 91 and 92 are in a state of being compressed in the first direction Z between the support body 2 and the movable body 6.

The connecting bodies 91 and 92 are viscoelastic members in this example. For example, the connecting bodies 91 and 92 (viscoelastic members) are gel-like members made of silicone gel or the like. In this example, the connectors 91 and 92 are made of a silicone gel having a needle insertion degree of 10 to 110 degrees. The degree of needle insertion is defined by JIS-K-2207 and JIS-K-2220, and the smaller this value is, the harder it is. Further, as the binders 91 and 92 having viscoelasticity, 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, fluororubber, etc.), various rubber materials such as thermoplastic elastomers, and modified materials thereof may be used.

The connecting bodies 91 and 92 have linear or non-linear stretching characteristics depending on the stretching direction thereof. For example, when the connectors 91 and 92 are pressed in the thickness direction (axial direction) and compressed and deformed, they have a stretch characteristic in which a non-linear component is larger than a linear component (spring constant), while the connection bodies 91 and 92 have a stretch characteristic. When it is pulled and stretched (in the axial direction), it is a linear component (spring constant) rather than a non-linear component (spring constant).
It has a stretch characteristic with a large spring coefficient). Further, when the connecting bodies 91 and 92 are deformed in the direction intersecting the thickness direction (axial direction) (shearing direction), they are deformed in the pulling and extending direction regardless of which direction they move, so that they are non-linear. It has a deformation characteristic in which the linear component (spring coefficient) is larger than the component (spring coefficient).

Here, in a state where the movable body 6 is supported by the support 2 via the connecting bodies 91 and 92, as shown in FIG. 3, the notches 42 and 43 of the coil holder 4 have the yokes 8 respectively. The overhanging portion 812 and the overhanging portion 822 are arranged. As a result, the side plate portion 414 and the side plate portion 418 of the coil holder 4, and the side plate portion 415 and the side plate portion 419 function as hitting portions that define the movable range when the movable body 6 moves in the third direction Y. ..

Further, in a state where the movable body 6 is supported by the support body 2 via the connecting bodies 91 and 92, the first yoke 81 and the inner surface 414s, on one side Z1 of the plate portion 41 of the coil holder 4 in the first direction Z, The 415s, 418s, and 419s face each other in the second direction X. Further, on the other side Z2 of the plate portion 41 in the first direction Z, the second yoke 82 and the inner surfaces 414s, 415s, 418s, and 419s face each other in the second direction X. Therefore, the inner surfaces 414s and 415s of the side plate portions 414 and 415 and the inner surfaces 418s and 419s of the side plate portions 418 and 419 function as perimeter portions that define the movable range when the movable body 6 moves in the second direction X. To do.

Further, when the movable body 6 is supported by the support 2 via the connecting bodies 91 and 92, each of the pair of connecting portions 88 of the yoke 8 can be moved in the second direction X on the first plate side. It penetrates the through hole 62, the holder through hole 61, and the second plate side through hole 63 in the first direction Z. Therefore, the inner wall surface of the first plate side through hole 62, the holder through hole 61, and the second plate side through hole 63 serves as a perforated portion that defines the movable range when the movable body 6 moves in the third direction Y. Function.

Here, in this example, when the movable body 6 vibrates in the second direction X, the connecting bodies 91 and 92 are deformed in the shearing direction. Therefore, in the connecting bodies 91 and 92, when the movable body 6 vibrates in the second direction X, the reproducibility of the vibration acceleration with respect to the input signal can be improved by using the spring element in the shearing direction, which is delicate. Vibration can be realized with nuance.

(Power supply board)
The actuator 1 supplies power to the coil 5 from the outside (upper device) via the power supply board 10. As shown in FIGS. 1 and 3, the power feeding board 10 is held in an opening of the coil holder 4 surrounded by side plate portions 413, 414, 415 on one side of the third direction Y. The coil wire 56 drawn out from the coil 5 is formed on the plate portion 41 of the coil holder 4 via the one side X1 of the second direction X of the holder through hole 61 of the holder through hole 61 on one side Y1 of the third direction Y of the coil holder 4. It is pulled out to the power supply board 10 side through the guide groove 411c (see FIG. 5), bent to the other side Z2 in the first direction Z, and connected to the power supply board 10. Further, the coil wire 57 drawn out from the coil 5 passes through the other side X2 of the holder through hole 61 of the holder through hole 61 on one side Y1 of the third direction Y of the coil holder 4 and the plate portion 41 of the coil holder 4. It is pulled out to the power supply board 10 side through the guide groove 411c formed in the above direction, bent to the other side Z2 in the first direction Z, and connected to the power supply board 10.

The coil holder 4 is formed with a pair of slits 414t and 415t at the ends of the side plate portions 414 and 415 facing each other in the second direction X, and the end portions on both sides of the power feeding board 10 in the second direction X are formed. It fits inside the slits 414t and 415t. In this example, after fitting the end portion of the power feeding board 10 into the slits 414t and 415t, the coil holder 4 and the power feeding board 10 are further fixed with an adhesive to suppress the vibration of the power feeding board 10.

(Action effect)
In this example, the first plate portion 811 and the second plate portion 821 facing each other in the first direction Z with the coil 5 and the magnet 7 sandwiched are connected to each other in the third direction Y with the coil 5 and the magnet 7 sandwiched between them. It is connected by unit 88. According to this configuration, the movable body 6 does not need to be provided with wall-shaped portions perpendicular to both ends of the second direction X, which is the moving direction thereof, so that the moving distance of the movable body 6 can be secured accordingly. .. Further, since it is not necessary for the movable body 6 to have wall-shaped portions perpendicular to both ends in the second direction X, the area of the portion that pushes air when the movable body 6 moves can be reduced. Therefore, it is possible to reduce the operating noise caused by the air being pushed when the movable body 6 is moved.

Further, the first plate portion 811 and the second plate portion 821 of the movable body 6 facing each other in the first direction Z with the coil 5 and the magnet 7 interposed therebetween are made of a magnetic material and function as a yoke 8. Further, the first plate portion 811 and the second plate portion 821 are connected by a pair of connecting portions 88 facing each other in the third direction Y with the coil 5 and the magnet 7 interposed therebetween, and these pair of connecting portions 88 are also made of a magnetic material. Consists of. As a result, the generation of leakage flux can be suppressed, so that it is easy to secure the driving force of the magnetic drive circuit 1a.

Further, in this example, each of the pair of connecting portions 88 is a first connecting portion 88a integrally formed with the first plate portion 811 and a second connecting portion 88b integrally formed with the second plate portion 821. The first connection portion 88a and the second connection portion 88b have a shape symmetrical with respect to the virtual surface S perpendicular to the first direction Z. As a result, the member provided with the first plate portion 811 and the first connecting portion 88a and the member provided with the second plate portion 821 and the second connecting portion 88b have the same shape, so that the component shapes can be standardized. Can be planned. Therefore, the manufacturing cost and the management cost of the parts can be reduced.

(Modification example)
Each connecting portion 88 may be provided integrally with the first plate portion 811. That is, the first yoke 81 may include a pair of connecting portions 88. In this case, the ends of the pair of connecting portions 88 on the other side Z2 in the first direction Z are welded to the second yoke 82. Alternatively, each connection portion 88 may be provided integrally with the second plate portion 821. That is, the second yoke 82 may include a pair of connecting portions 88. In this case, the end of one side Z1 of the first direction Z of the pair of connecting portions 88 is welded to the second yoke 82.

In this way, the pair of connecting portions 88 is formed integrally with the first yoke 81 or the second yoke 82, so that the pair of connecting portions 88 is separated from the first yoke 81 and the second yoke 82. Compared with the case where it is provided on the body, the number of parts can be reduced and the strength of the movable body 6 can be ensured.

The pair of connecting portions 88 may be separate from the first plate portion 811 and the second plate portion 821. In this way, the degree of freedom in the shape of the parts of the pair of connecting portions 88 is increased.

Further, in the above example, the gel-like member (viscoelastic member) is used as the connecting bodies 91 and 92, but rubber, a spring, or the like may be used.

Further, in the above example, the magnets 7 are arranged on both sides of the first direction Z with respect to the coil 5, but the actuator has the magnets 7 arranged only on one side Z1 or the other side Z2 of the first direction Z with respect to the coil 5. The present invention may be applied. Further, the above-described embodiment includes two sets of the coil 5 and the magnet 7 facing each other in the first direction Z, but includes one set or three or more sets of the coil 5 and the magnet 7 facing each other in the first direction Z. The present invention may be applied to the actuator.

Further, the connecting bodies 91 and 92 may be arranged between the movable body 6 and the case 3. Even in this way, the movable body 6 can be displaceably supported in the first direction (moving direction) by the connecting bodies 91 and 92.

Here, the power feeding board 10 can be arranged on one side surface of the support 2 in the second direction X.

Further, the pair of overhanging portions 812 of the first plate portion 811 and the pair of overhanging portions 822 of the second yoke 82 may be omitted.

1 ... actuator, 1a ... magnetic drive circuit, 2 ... support, 3 ... case, 4 ... coil holder, 5 ... coil, 6 ... movable body, 7 ... magnet, 8 ... yoke, 9 ... adhesive layer, 10 ... power supply Substrate, 31 ... 1st case member, 32 ... 2nd case member, 41 ... Plate part, 42, 43 ... Notch part, 47 ... 1st plate, 48 ... 2nd plate, 50 ... Air core part, 51 ... Length Side part, 52 ... Short side part, 61 ... Holder through hole, 62 ... First plate side through hole, 63 ... Second plate side through hole, 71 ... First permanent magnet, 72 ... Second permanent magnet, 81 ... No. 1 yoke, 82 ... 2nd yoke, 88 ... connection part, 88a ... first connection part, 88b ... second connection part, 91, 92 ... connection body, 311, 321, 413, 414, 415, 417, 418, 419 ... Side plate part, 410 ... Coil placement hole, 410 ... Coil placement hole, 411c ... Guide groove, 811 ... First plate part, 812 ... Overhanging part, 821 ... Second plate part, 822 ... Overhanging part, X ... Second direction (Movement direction), Y ... 3rd direction, Z ... 1st direction (opposite direction)

Claims (9)

With the support
Movable body and
A connecting body connected to the movable body and the supporting body,
It has a magnetic drive circuit that moves the movable body, and
The magnetic drive circuit includes a coil provided on one side member of the support and the movable body, and a magnet provided on the other side member of the support and the movable body and facing the coil. With,
The connector comprises at least one of elastic and viscoelasticity.
When the facing direction in which the coil and the magnet face each other is the first direction, the moving direction of the movable body is the second direction, and the direction orthogonal to the first direction and the second direction is the third direction, the movable body With the first plate portion and the second plate portion facing the coil and the magnet in the first direction, and the first plate portion facing the coil and the magnet in the third direction. An actuator including a pair of connecting portions for connecting the second plate portion. The actuator according to claim 1, wherein the first plate portion and the second plate portion are made of a magnetic material. Each of the pair of the connection portions includes a first connection portion integrally formed with the first plate portion and a second connection portion integrally formed with the second plate portion.
The actuator according to claim 1 or 2, wherein the first connecting portion and the second connecting portion have a symmetrical shape with respect to a plane perpendicular to the first direction. The actuator according to claim 1 or 2, wherein the pair of the connecting portions is integrally formed with the first plate portion or the second plate portion. The actuator according to claim 1 or 2, wherein the pair of the connecting portions is separate from the first plate portion and the second plate portion. The support includes the coil and
The actuator according to any one of claims 1 to 5, wherein the movable body includes the magnet. The support includes a coil holder that holds the coil.
The first plate portion and the second plate portion sandwich the coil holder from both sides in the first direction.
The coil holder is provided with a pair of elongated holes extending in the second direction at a position overlapping the pair of the connection portions when viewed from the first direction.
The actuator according to claim 6, wherein each connecting portion penetrates each elongated hole in a state of being movable in the second direction. Has a power supply board
The power feeding board is arranged on one side of the support in the third direction.
The coil wire drawn out from the coil is connected to the power feeding board via the second direction of the long hole located on one side of the third direction of the pair of long holes. The actuator according to claim 7. Has a power supply board
The actuator according to any one of claims 1 to 7, wherein the power feeding board is arranged on one side of the support in the second direction.