JP7290445B2 - actuator - Google Patents

Description

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

Patent Document 1 discloses an actuator used as a device that notifies information by vibration. The actuator of Patent Literature 1 has a movable body with a permanent magnet and a support body 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 perpendicular 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 extend from both ends of the first plate portion in the vibration direction while being bent toward the second yoke side. . Both ends of the second yoke in the vibration direction are fixed to the tips of the pair of connecting portions. Each connecting portion is wall-shaped perpendicular to the vibration direction.

JP 2019-13095 A

In the case where the movable body has wall-shaped portions (a pair of connecting portions) 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 portions. be.

In view of the above problems, an object of the present invention is to provide an actuator that facilitates securing a moving distance of a movable body.

In order to solve the above problems, an actuator of the present invention includes a support, a movable body, a connector connected to the movable body and the support, and a magnetic drive circuit for moving 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 coil provided on the other side member of the support and the movable body and facing the coil. the connection body has at least one of elasticity and viscoelasticity, the opposing 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 When a direction orthogonal to the first direction and the second direction is defined as a third direction, the movable body includes a first plate portion and a second plate portion facing each other in the first direction with the coil and the magnet interposed therebetween; a pair of connection portions that connect the first plate portion and the second plate portion facing each other in the third direction with the coil and the magnet interposed therebetween; a coil holder that holds a coil, the movable body includes the magnet, the first plate portion and the second plate portion sandwich the coil holder from both sides in the first direction, and The coil holder includes a pair of elongated holes extending in the second direction and the second holes of the first plate portion and the second plate portion at positions overlapping the pair of connection portions when viewed from the first direction. a contacting portion defining a movable range when the movable body moves in the second direction by abutting on both sides in the direction, and each connecting portion is movable in the second direction. It is characterized by passing through each long hole .

According to the present invention, the first plate portion and the second plate portion are connected by the connection portion provided in the third direction orthogonal to the moving direction of the movable body. This eliminates the need for the movable body to have vertical wall-like portions at both ends in the moving direction, so that a longer moving distance of the movable body can be ensured. again
If the coil is provided on the support, wiring to the coil becomes easier than when the coil is provided on the movable body. Also, no load is generated due to deformation of the wiring to the coil when the movable body moves. Further, 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 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 interposed therebetween are made of a magnetic material, the first plate portion and the second plate portion function as yokes. As a result, it is possible to suppress the occurrence of leakage magnetic flux, so that it becomes easy to secure the driving force of the magnetic drive circuit.

In the present invention, each of the pair of connection portions includes a first connection portion formed integrally with the first plate portion and a second connection portion formed integrally with the second plate portion, It is preferable that the first connecting portion and the second connecting portion have symmetrical shapes with respect to a plane perpendicular to the first direction. Also, a member (a member configured by the first plate portion and the first connecting portion) surrounding the magnet and the coil from one side in the first direction, and a member (a second plate) surrounding the magnet and the coil from the other side in the first direction and a member configured by 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 connection portions may be formed integrally with the first plate portion or the second plate portion. If the connection portion is integrated with the first plate portion or the second plate portion, the number of parts can be reduced compared to the case where the connection portion is separate from the first plate portion and the second plate portion. can.

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

In the present invention, a power supply substrate is provided, the power supply substrate is arranged on one side of the movable body in the third direction, and the coil wire drawn out from the coil is connected to one of the pair of elongated holes. It can be connected to the power supply board via the second direction of the long hole located on one side of the third direction. With this configuration, the power supply board is arranged in the third direction perpendicular to the moving direction of the movable body, so that the power supply board does not limit the moving distance of the movable body. Further, in this way, it is possible to prevent the coil wire drawn from the coil and connected to the power supply substrate from interfering with the movable body.

In the present invention, a power supply substrate may be provided, and the power supply substrate 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 the connection portion provided in the third direction orthogonal to the moving direction. As a result, the movable body does not need to have vertical wall-like portions at both ends in the moving direction, so that a longer moving distance of the movable body can be ensured. In addition, since the movable body does not need to have vertical wall-like portions at both ends in the moving direction, the area of the portion that pushes the 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.

1 is an external perspective view of an actuator to which the present invention is applied; FIG. FIG. 2 is a cross-sectional view of the actuator of FIG. 1 taken along the line AA; 4 is an exploded perspective view of an actuator; FIG. FIG. 4 is an exploded perspective view of the actuator with the case removed; FIG. 4 is an exploded perspective view of the support as seen from the other side in the first direction; FIG. 4 is an exploded perspective view of the support as viewed from one side in the first direction; FIG. 2 is a BB cross-sectional view of the actuator of FIG. 1;

Embodiments of the actuator of the present invention will be described below 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 (cross-sectional view taken along line AA in FIG. 1). FIG. 3 is an exploded perspective view of the actuator 1. FIG. FIG. 4 is an exploded perspective view of the actuator 1 with the case 3 removed. 5 is an exploded perspective view of the support 2 as seen 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 in the first direction Z. FIG. FIG. 7 is a cross-sectional perspective view of the actuator (cross-sectional view along BB in FIG. 1).

(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 rectangular case 3 defining the outer shape of the actuator 1 and a movable body 6 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 supply board 10 . The movable body 6 has a magnet 7 and a yoke 8 . The coil 5 and the magnet 7 face each other and constitute a magnetic drive circuit 1a for moving the movable body 6. As shown in FIG. The direction in which the coil 5 and the magnet 7 face each other is perpendicular to the moving direction in which the movable body 6 moves. The actuator 1 also 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 supporting body 2 via connecting bodies 91 and 92 . The connecting bodies 91 and 92 support the movable body 6 so as to be displaceable in the movement direction. The connecting bodies 91, 92 have at least one of elasticity and viscoelasticity.

In the following description, the three mutually intersecting directions are 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. A first direction Z is a facing 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. As shown in FIG. Further, hereinafter, one side in the first direction Z is denoted by Z1, the other side in the first direction Z is denoted by Z2, one side in the second direction X is denoted by X1, and the other side in the second direction X is denoted by Z1. One side in the third direction Y is denoted by X2, one side in the third direction Y is denoted by Y1, and the other side in the third direction Y is denoted by Y2.

When the movable body 6 vibrates in the second direction X, the actuator 1 notifies the user of information through the body of the person who uses the actuator 1 or the device to which the actuator 1 is attached. Therefore, the actuator 1 can be used as a tactile device that gives a user a tactile sensation by vibrating the movable body 6 in the second direction X. For example, the actuator 1 can be used as an operating member of a game machine, an operating panel, a steering wheel or chair of an automobile, and the like. It can be incorporated and used. When the actuator 1 is used as a haptic device, for example, by adjusting the AC waveform applied to the coil 5, the acceleration at which the movable body 6 moves in one side X1 in the second direction X and the acceleration at which the movable body 6 moves in the second direction If the acceleration moving to the other side X2 is different, the user can feel the vibration having directionality 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 support body 2 (one side member) side, and the magnet is provided on the movable body 6 (other side member) side. A mode and a mode in which the magnet 7 is provided on the support body 2 (other side member) side and the coil 5 is provided on the movable body 6 (one side member) side can be adopted. In the embodiment described below, one side member holding the coil 5 is the supporting body 2 and the other side member holding the magnet 7 is the movable body 6 .

(movable body)
As shown in FIGS. 2 and 4, the magnet 7 in this example includes a first permanent magnet 71 and a second permanent magnet. The first permanent magnet 71 faces the coil 5 on one side Z1 in the first direction Z, and the second permanent magnet 72 faces the coil 5 on the other side Z2 in the first direction Z. Each of the first permanent magnet 71 and the second permanent magnet 72 is magnetized so that one side X1 in the second direction X and the other side X2 in the second direction X have different poles.

The yoke 8 is made of magnetic material. Yoke 8 holds 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 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. As shown in FIG. 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 projecting portions 812 projecting from the middle portion of the first plate portion 811 in the third direction Y toward one side X1 and the other side X2 in the second direction X. As shown in FIG. The second yoke 82 includes a pair of projecting portions 822 projecting from the intermediate portion of the second plate portion 821 in the third direction Y to the one side X1 and the other side X2 in the second direction X. As shown in FIG. 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. As shown in FIG. Also, the second permanent magnet 72 is held on the surface of the second plate portion 821 on the one side Z1 in the first direction Z. As shown in FIG.

In addition, the yoke 8 includes a pair of connection portions 88 that connect the first plate portion 811 and the second plate portion 821 at two locations spaced apart in the third direction Y. As shown in FIG. A 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 end portions of one side Y1 and the other side Y2 in the third direction Y of the first plate portion 811 to the other side Z2 in the first direction Z, and a second plate portion. A second connecting portion 88b extending from the ends of the one side Y1 and the other side Y2 in the third direction Y of 821 to the one side Z1 in the first direction Z is provided. That is, the first connection portion 88a is formed integrally with the first plate portion 811. As shown in FIG. The second connection portion 88b is formed integrally with the second plate portion 821 . An end portion of the first connection portion 88a on the other side Z2 in the first direction Z is fixed to an end portion of the second connection portion 88b on the one side Z1 in 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. and a second case member 32 . 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 are covered with a pair of side plate portions 321 provided on both sides of the second case member 32 in the second direction X. assembled in good condition. Both ends of the case 3 in the third direction Y are openings, and the feeding substrate 10 is arranged in the opening on one side Y1 in the third direction Y. As shown in FIG.

The pair of side plate portions 311 of the first case member 31 are formed with notches 311a and 311b at both end portions in the third direction Y. As shown in FIG. The pair of side plate portions 321 of the second case member 32 are formed with notches 321a and 321b at both end portions in the third direction Y. As shown in FIG. Engagement holes 321 d are formed at two locations spaced apart in the third direction Y in the side plate portion 321 of the second case member 32 .

As shown in FIG. 5, the coil holder 4 has a rectangular shape elongated in the third direction Y when viewed from the first direction Z. As shown in FIG. As shown in FIG. 3, on the side surface of the coil holder 4 on one side X1 in the second direction X, two protrusions 414e and 418e are formed at both ends in the third direction Y. Engagement projections 414d and 418d are formed at two spaced apart locations.

As shown in FIG. 1, in the case 3, the protrusions 414e and 418e of the coil holder 4 are fitted 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 is The engaging protrusions 414d and 418d are assembled so as to be engaged with the engaging hole 321d of the second case member 32. As shown in FIG. Similarly, on the side surface of the coil holder 4 on the other side X2 in the second direction X, a protrusion is formed to fit the notch 311a of the first case member 31 and the notch 321a of the second case member 32. An engagement protrusion that engages with the engagement 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 elliptical shape. Coil 5 is held by coil holder 4 . The coil 5 has two long side portions 51 extending in the third direction Y in parallel in the second direction X, and two arc-shaped short side portions 52 connecting both ends of the two long side portions 51 in the third direction Y. and When the movable body 6 and the support body 2 are assembled, the long side 51 of the coil 5 faces the first permanent magnet 71 on one side Z1 in the first direction Z, and the second permanent magnet 71 on the other side Z2 in the first direction Z. 2 permanent magnets 72 face each other.

The coil holder 4 has a rectangular shape elongated in the third direction Y when viewed from the first direction Z. As shown in FIG. The coil holder 4 includes a plate portion 41 extending in the third direction Y at the center in the second direction X. As shown in FIG. A coil arrangement hole 410 opens in the first direction Z in the central portion of the plate portion 41 in the third direction Y. As shown in FIG. The coil arrangement hole 410 is an oval through hole in which the coil 5 is arranged. A pair of holder through holes 61 are provided on both sides of the coil arrangement hole 410 in the third direction Y in the plate portion 41 . The holder through hole 61 penetrates the coil holder 4 in the first direction Z. As shown in FIG. That is, the holder through hole 61 is open in the first direction Z. As shown in FIG. Each of the pair of holder through holes 61 is an elongated hole extending in the second direction X. As shown in FIG.

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

The coil holder 4 includes notch portions 42 and 43 formed by notching both edges of the plate portion 41 in the second direction X inward. The notch portions 42 and 43 are provided in the middle portion of the plate portion 41 in the third direction Y. As shown in FIG.

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

The first plate 47 has claw portions 472 obliquely projecting from both sides in the second direction X toward one side Z1 in the first direction Z. As shown in FIG. Further, the second plate 48 has claw portions 482 obliquely projecting from both sides in the second direction X toward the other side Z2 in the first direction Z. As shown in FIG. The claw portion 482 is held by the coil holder 4 by elastically abutting inside groove-shaped concave portions formed in the inner surfaces 414 s, 415 s, 418 s, and 419 s of the side plate portions 414 , 415 , 418 , and 419 .

The coil 5 is fixed to the coil holder 4 with an adhesive. The adhesive fills the air core portion 50 of the coil 5, flows between the coil 5 and the coil holder 4, and hardens. In addition, the adhesive is applied 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) into which the adhesive has flowed and hardened.

(Connector)
The movable body 6 is movably supported in the second direction X by connecting bodies 91 and 92 provided between the movable body 6 and the support body 2 . As shown in FIGS. 2 and 4, the connection 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. As shown in FIGS. Also, the connection 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. As shown in FIG. More specifically, the connectors 91 and 92 are arranged on both sides of the coil arrangement hole 410 in the third direction Y. As shown in FIG. That is, the connecting bodies 91 and 92 are positioned between the coil arrangement hole 410 and the holder through hole 61 positioned on one side Y1 in the third direction Y, and between the coil arrangement hole 410 and the other side Y2 in the third direction Y. It is arranged between the holder through hole 61 that In this example, the connecting bodies 91 and 92 are connected to the movable body 6 and the supporting body 2 on both surfaces in the first direction Z by a method such as adhesion. Also, the connecting bodies 91 and 92 are in a state of being compressed in the first direction Z between the supporting body 2 and the movable body 6 .

The connecting bodies 91, 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 silicone gel with a penetration of 10 degrees to 110 degrees. Penetration is defined in JIS-K-2207 and JIS-K-2220, and the smaller the value, the harder the material. The viscoelastic connectors 91 and 92 may be natural rubber, diene rubber (e.g., styrene/butadiene rubber, isoprene rubber, butadiene rubber, chloroprene rubber, acrylonitrile/butadiene rubber, etc.), non-diene rubber (e.g., , butyl rubber, ethylene-propylene rubber, ethylene-propylene-diene rubber, urethane rubber, silicone rubber, fluororubber, etc.), thermoplastic elastomers, and modified materials thereof.

The connecting members 91 and 92 have linear or non-linear expansion/contraction characteristics depending on the direction of expansion/contraction. For example, when the connecting bodies 91 and 92 are pressed in their thickness direction (axial direction) and are compressed and deformed, they have elastic properties in which the nonlinear component (spring coefficient) is larger than the linear component (spring coefficient). (Axial direction), the linear component (
It has elastic properties with a large spring coefficient. In addition, when the connecting members 91 and 92 are deformed in a direction (shearing direction) intersecting the thickness direction (axial direction), the deformation is in the direction of being pulled and elongated regardless of which direction the connecting members 91 and 92 move. 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 body 2 via the connecting bodies 91 and 92, as shown in FIG. Overhang 812 and overhang 822 are provided. Thus, the side plate portion 414 and the side plate portion 418, and the side plate portion 415 and the side plate portion 419 of the coil holder 4 function as a contact portion that defines the movable range when the movable body 6 moves in the third direction Y. .

Further, when 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, 415s, 418s, and 419s face each other in the second direction X. In addition, the second yoke 82 faces the inner surfaces 414s, 415s, 418s, and 419s in the second direction X on the other side Z2 of the plate portion 41 in the first direction Z. As shown in FIG. 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 a contact portion that defines the movable range when the movable body 6 moves in the second direction X. do.

Furthermore, when the movable body 6 is supported by the support body 2 via the connecting bodies 91 and 92, each of the pair of connecting parts 88 of the yoke 8 is movable in the second direction X and moves toward the first plate. It penetrates in the first direction Z through the through hole 62 , the holder through hole 61 , and the second plate side through hole 63 . Therefore, the inner wall surfaces of the first plate-side through-hole 62, the holder through-hole 61, and the second plate-side through-hole 63 serve as contact portions that define 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 deform in the shear direction. Therefore, in the connecting bodies 91 and 92, when the movable body 6 vibrates in the second direction X, by using a spring element in the shear direction, it is possible to improve the reproducibility of the vibration acceleration with respect to the input signal. Vibration can be realized with nuances.

(Power supply board)
The actuator 1 supplies power to the coil 5 from the outside (upper equipment) via the power supply board 10 . As shown in FIGS. 1 and 3 , the power supply substrate 10 is held in an opening surrounded by the side plate portions 413 , 414 , 415 on one side in the third direction Y of the coil holder 4 . A coil wire 56 drawn from the coil 5 is formed on the plate portion 41 of the coil holder 4 via one side X1 in the second direction X of the holder through hole 61 on one side Y1 in the third direction Y of the coil holder 4. The guide groove 411 c (see FIG. 5 ) is pulled out to the side of the feeder board 10 , bent to the other side Z 2 in the first direction Z, and connected to the feeder board 10 . Further, the coil wire 57 drawn out from the coil 5 passes through the other side X2 in the second direction X of the holder through-hole 61 on the one side Y1 in the third direction Y of the coil holder 4, and passes through the plate portion 41 of the coil holder 4. It is pulled out to the side of the feeder board 10 through the guide groove 411c formed in the 2nd direction, bent to the other side Z2 in the first direction Z, and connected to the feeder board 10 .

A pair of slits 414t and 415t are formed in the end portions of the side plate portions 414 and 415 facing each other in the second direction X in the coil holder 4. It fits inside the slits 414t and 415t. In this example, after the ends of the feeder board 10 are fitted into the slits 414t and 415t, the coil holder 4 and the feeder board 10 are further fixed with an adhesive to suppress the vibration of the feeder board 10 .

(Effect)
In this example, the first plate portion 811 and the second plate portion 821 that face each other in the first direction Z with the coil 5 and the magnet 7 interposed therebetween are a pair of connecting members that face each other in the third direction Y with the coil 5 and the magnet 7 therebetween. connected by part 88 . According to such a configuration, the movable body 6 does not need to have wall-shaped portions perpendicular to both ends in the second direction X, which is the movement direction, so that a longer movement distance of the movable body 6 can be secured accordingly. . In addition, since the movable body 6 does not need to have wall-shaped portions perpendicular to both ends in the second direction X, the area of the portion that pushes the 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.

A first plate portion 811 and a second plate portion 821 of the movable body 6 that face 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 the yoke 8 . The first plate portion 811 and the second plate portion 821 are connected by a pair of connection portions 88 facing each other in the third direction Y with the coil 5 and the magnet 7 interposed therebetween. consists of As a result, it is possible to suppress the generation of leakage magnetic flux, so that it is easy to secure the driving force of the magnetic drive circuit 1a.

Furthermore, in this example, each of the pair of connecting portions 88 includes a first connecting portion 88a formed integrally with the first plate portion 811 and a second connecting portion 88b formed integrally with the second plate portion 821. , and the first connection portion 88a and the second connection portion 88b are symmetrical with respect to a virtual plane S perpendicular to the first direction Z. As a result, the member having the first plate portion 811 and the first connection portion 88a and the member having the second plate portion 821 and the second connection portion 88b have the same shape, so that the shape of the parts can be made common. can be achieved. Therefore, the manufacturing cost and management cost of parts can be reduced.

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

With this configuration, the pair of connecting portions 88 are formed integrally with the first yoke 81 or the second yoke 82, so the pair of connecting portions 88 can be separated from the first yoke 81 and the second yoke 82. The number of parts can be reduced and the strength of the movable body 6 can be secured as compared with the case where it is provided on the body.

Note that the pair of connection portions 88 may be separate from the first plate portion 811 and the second plate portion 821 . By doing so, the degree of freedom in the shape of the parts for the pair of connecting portions 88 is increased.

Also, in the above example, a 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 in an actuator in which the magnets 7 are 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. In addition, although the above embodiment includes two sets of coils 5 and magnets 7 facing each other in the first direction Z, one set or three or more sets of coils 5 and magnets 7 facing each other in the first direction Z are provided. The present invention may also be applied to an actuator that

Also, the connecting bodies 91 and 92 may be arranged between the movable body 6 and the case 3 . Even in this way, the connecting bodies 91 and 92 can support the movable body 6 so as to be displaceable in the first direction (moving direction).

Here, the power supply substrate 10 can be arranged on one side surface of the support 2 in the second direction X. As shown in FIG.

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

DESCRIPTION OF SYMBOLS 1... Actuator 1a... Magnetic drive circuit 2... Support body 3... Case 4... Coil holder 5... Coil 6... Movable body 7... Magnet 8... Yoke 9... Adhesive layer 10... Power supply Substrate 31 First case member 32 Second case member 41 Plate portion 42, 43 Notch portion 47 First plate 48 Second plate 50 Air core portion 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... Second 1 yoke 82 second yoke 88 connecting part 88a first connecting part 88b second connecting part 91, 92 connecting bodies 311, 321, 413, 414, 415, 417, 418, 419 Side plate portion 410 Coil arrangement hole 410 Coil arrangement hole 411c Guide groove 811 First plate portion 812 Projection portion 821 Second plate portion 822 Projection portion X Second direction (moving direction), Y... third direction, Z... first direction (facing direction)

Claims (7)

a support;
a movable body;
a connection body connected to the movable body and the support body;
a magnetic drive circuit for moving the movable body,
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. , and
the connector has at least one of elasticity and viscoelasticity;
When the direction in which the coil and the magnet face each other is defined as a first direction, the moving direction of the movable body is defined as a second direction, and the direction orthogonal to the first and second directions is defined as a third direction, the movable body are a first plate portion and a second plate portion facing each other in the first direction with the coil and the magnet interposed therebetween, and the first plate portion facing each other in the third direction with the coil and the magnet interposed therebetween; A pair of connection portions that connect the second plate portion ,
The support includes the coil and a coil holder that holds the coil,
The movable body includes the magnet,
The first plate portion and the second plate portion sandwich the coil holder from both sides in the first direction,
The coil holder includes a pair of elongated holes extending in the second direction and the first and second plate portions of the first plate portion and the second plate portion at positions overlapping the pair of connection portions when viewed from the first direction. a contacting portion that defines a movable range when the movable body moves in the second direction by abutting on both sides in two directions;
An actuator , wherein each connecting portion passes through each elongated hole in a state of being movable in the second direction . 2. The actuator according to claim 1, wherein said first plate portion and said second plate portion are made of a magnetic material. Each of the pair of connection portions includes a first connection portion formed integrally with the first plate portion and a second connection portion formed integrally with the second plate portion,
3. The actuator according to claim 1, wherein the first connecting portion and the second connecting portion have symmetrical shapes with respect to a plane perpendicular to the first direction. 3. The actuator according to claim 1, wherein the pair of connecting portions are formed integrally with the first plate portion or the second plate portion. 3. The actuator according to claim 1, wherein the pair of connection portions are separate from the first plate portion and the second plate portion. having a power supply substrate,
The power supply substrate is arranged on one side of the support in the third direction,
A coil wire drawn out from the coil is connected to the power supply board through the second direction of the elongated hole positioned on one side of the third direction out of the pair of elongated holes. 6. Actuator according to any one of claims 1-5 . having a power supply substrate,
The actuator according to any one of claims 1 to 5 , wherein the power supply substrate is arranged on one side of the support in the second direction.

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