JP7319764B2 - actuator - Google Patents

Description

The present invention relates to actuators that generate various vibrations.

2. Description of the Related Art As an actuator that is used as an operating member of a game machine to generate various vibrations, a device that generates vibrations by a magnetic driving mechanism described in Patent Document 1 has been proposed. The actuator causes the movable body to oscillate in a second or third direction crossing the first direction with respect to the support by a magnetic drive circuit having a coil and a magnet facing each other in the first direction. In the structure described in Patent Document 1, the magnet is held by a yoke made of a magnetic material provided on the support. Further, a connection body made of a gel-like damper member is provided between the support body and the movable body so as to connect the two.

JP 2016-127789 A

In the actuator described in Patent Document 1, when the movable body moves due to a drop impact or the like, the movement in the direction (second direction or third direction) along the vibration plane is caused by the movable body coming into contact with the support body. The range of movement is limited, in which case the connector deforms in the shear direction. On the other hand, when the movable body moves in the first direction orthogonal to the vibration plane due to a drop impact or the like, the connecting body is deformed in the compression or stretching direction. This connector is made of a material having elasticity or viscoelasticity, and if it is strongly crushed by a drop impact, its function may be destroyed.
In the case of the structure of Patent Document 1, four magnetic drive circuits are arranged at intervals of 90° from the center of the actuator, and there are relatively A thick connection is provided. Therefore, even if the movable body moves in the first direction due to the drop impact, the connecting body is less likely to be strongly crushed.
However, with the structure of Patent Document 1, it is necessary to secure a space for providing the connection body around the magnetic drive circuit, so the actuator becomes large in the direction along the vibration surface.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and aims to prevent the device from becoming large while effectively protecting the function of the connecting member by regulating the movement of the movable body in the event of a drop impact or the like. aim.

The actuator of the present invention includes a support, a movable body movably supported by the support, a coil provided on one side member of the support or the movable body, and the support or the movable body. a magnetic drive circuit that includes a first magnet provided on the other side member and facing the coil in a first direction, and that drives the movable body in a second direction that intersects with the first direction; a connector having elasticity or viscoelasticity disposed between positions where the support and the movable body face each other in the first direction so as to be in contact with both the support and the movable body; and a stopper mechanism for restricting the moving range of the movable body along one direction within a range in which the connecting body can be restored.

In the present invention, by providing a stopper mechanism for restricting the movement of the movable body and the supporting body in the facing direction (first direction), the movable body and the supporting body move in the first direction due to a drop impact or the like to connect. Even if the body is compressed and deformed, the connecting body is not crushed and the range of relative movement between the movable body and the supporting body is restricted to a restorable range, preventing the function of the connecting body from being destroyed. be done.

In the actuator of the present invention, the support body is provided with the coil, the movable body is provided with the first magnet and a yoke made of a magnetic material fixing the first magnet, and the yoke is provided with the first magnet. is fixed, and the connecting member is provided between the supporting member and the side opposite to the side where the yoke is fixed, and the stopper mechanism includes a convex portion provided on the yoke along the first direction, and the supporting member. and a receiving portion that is provided on the support and contacts the convex portion.

When the connection body is provided over the yoke, and when the connection body is provided between the opposed portions of the yoke and the coil, the connection body is hardly crushed because the yoke is provided with the first magnet. Since the 1-magnet and the connector are arranged side by side in the direction of the vibration surface, the installation space is increased. If an attempt is made to suppress an increase in the size of the device, the size of the first magnet is reduced and the driving force is reduced. On the other hand, when the connector is arranged between the yoke and the support, it becomes possible to ensure a wide space between the yoke and the coil in the vibrating plane direction, without increasing the size of the device. The size of the first magnet can be increased, and the driving force of the magnetic drive circuit can be increased. In this case, if there is no stopper mechanism, the connecting body may be crushed between the yoke and the support, and the connecting body may be destroyed. If the thickness of the connector is increased to avoid this, the size of the device increases.
In the present invention, by providing a stopper mechanism in which the projection of the yoke abuts against the receiving portion of the support, the connector is not crushed and is limited to a restorable range. As a result, it is possible to increase the driving force while suppressing an increase in the size of the device, and to reliably protect the connection body.

In the actuator of the present invention, the convex portion may be formed by bending a portion of the yoke toward the support.
The yoke is a member that constitutes a part of the magnetic drive circuit and is formed with a relatively large thickness. Therefore, by bending a portion of the yoke to form a projection, a projection that is resistant to deformation at the time of drop impact can be obtained. can be done.

In the actuator of the present invention, the convex portion may be made of a member separate from the yoke and may be fixed to the surface of the yoke on the side facing the support.
Since the protrusion is formed of a member separate from the yoke, the weight of the movable body can be increased by fixing it to the yoke. Therefore, by appropriately setting the size of the separate member having the convex portion, the weight of the movable body can be adjusted, and an actuator with desired vibration characteristics can be obtained.

In the actuator of the present invention, it is preferable that a plurality of the convex portions be provided point-symmetrically with respect to the center of gravity of the movable body when viewed from one side in the first direction.
Since the protrusions are provided point-symmetrically with respect to the center of gravity, the weight balance is balanced and stable vibration can be performed.

In still another embodiment of the actuator, the movable body is provided with a second magnet facing the coil on a side opposite to the side facing the first magnet, and the yoke is arranged to move the first magnet. It has a first plate portion to be fixed and a second plate portion to which the second magnet is fixed, the support has a case surrounding the outside of the yoke, and the connector is connected to the first plate portion. It may be provided between the case and between the second plate portion and the case, respectively, and the convex portion may be provided on each of the first plate portion and the second plate portion.

Since this actuator has a symmetrical structure on both sides of the coil and is well-balanced, it can generate stable vibration. Even in this case, the connection body can be protected in both the one side and the other side of the first direction at the time of drop impact.

In the actuator of the present invention, a second stopper mechanism may be provided between the support and the movable body to restrict the movable range of the movable body in the second direction. Also, a third stopper mechanism may be provided between the support and the movable body to restrict a movable range in a third direction orthogonal to both the first direction and the second direction.
Since the movement range of the movable body is regulated by the second stopper mechanism or the third stopper mechanism, it is possible to effectively prevent damage due to drop impact or the like.

ADVANTAGE OF THE INVENTION According to this invention, the enlargement of an apparatus can be suppressed, restricting the movement of a movable body at the time of a drop impact etc., and protecting the function of a connection body effectively.

It is a perspective view showing one embodiment of an actuator of the present invention. 2 is a YZ cross-sectional view of the actuator shown in FIG. 1 at the center position in the X direction; FIG. 2 is an XZ cross-sectional view of the actuator shown in FIG. 1 at the center position in the Y direction; FIG. 2 is an XY cross-sectional view of the center position of the actuator shown in FIG. 1 in the Z direction; FIG. 2 is a plan view of the actuator shown in FIG. 1 with a second case member removed; FIG. 2 is a perspective view of the actuator shown in FIG. 1 with a case disassembled; FIG. 7 is an exploded perspective view of the first yoke and the second yoke with the case removed from FIG. 6; FIG. FIG. 8 is a perspective view of the coil holder with the yoke removed from FIG. 7 and the coil and the like being disassembled; FIG. 4 is a perspective view showing an assembled state of a movable body having a yoke and magnets; FIG. 10 is a perspective view showing an assembled state of yokes and the like similar to FIG. 9 showing a modified example;

An embodiment of an actuator according to the present invention will be described below with reference to the drawings.
In the following description, three directions that intersect each other are defined as a first direction, a second direction, and a third direction. The directions are hereinafter referred to as the first direction Z, the second direction X, and the third direction Y, with the direction being the Y-axis direction. Also, the first direction Z, the second direction X and the third direction Y are directions orthogonal to each other. Also, one side in the second direction X is denoted by X1, the other side in the second direction X 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. , one side in the first direction Z is denoted by Z1, and the other side in the first direction Z is denoted by Z2.

(overall structure)
FIG. 1 is a perspective view showing the appearance of an actuator 1 of one embodiment.
The actuator 1 shown in FIG. 1 has a rectangular parallelepiped shape with its longitudinal direction oriented in the third direction Y, and notifies the user holding the actuator 1 of information by vibration in the second direction X. As shown in FIG. Therefore, the actuator 1 can be used as an operation member of a game machine or the like, and a new feeling can be realized by vibration or the like.
As shown in FIGS. 2, 3, and 5, the actuator 1 includes a support 2 including a rectangular case 3 that defines the outer shape of the actuator 1, and a second support 2 inside the case 3 with respect to the support 2. It has a movable body 6 supported movably in the direction X, and a magnetic drive circuit 1a for moving the movable body 6 in the second direction X with respect to the support 2. The magnetic drive circuit 1a moves the movable body 6. oscillates in the second direction X to output information. The magnetic drive circuit 1a has a coil 5 and permanent magnets 71 and 72 facing each other in the first direction Z. As shown in FIG. In this embodiment, the coil 5 is provided on the support 2 side, and the permanent magnets 71 and 72 are provided on the movable body 6 side.
In this embodiment, as described below, the support 2 has a case 3, a coil holder 4, a coil 5, and a power supply board 10, and the movable body 6 includes permanent magnets (first magnet 71 and second magnet 71). 2 magnets 72), and yokes (first yoke 81 and second yoke 82). In this case, with respect to the coil 5 held by the coil holder 4, the first magnet 71 is arranged on one side Z1 in the first direction Z, and the second magnet 72 is arranged on the other side Z2. Also, the movable body 6 is supported by the support 2 via connecting bodies 91 and 92 provided between the movable body 6 and the support 2 . The connecting bodies 91 and 92 are made of a material having at least one of elasticity and viscoelasticity.

(Configuration of movable body 6)
As shown in FIGS. 2 and 3, the movable body 6 includes a first yoke 81 made of a magnetic plate arranged on one side Z1 in the first direction Z with respect to the coil 5, and a It has a plate-like first magnet 71 held on the surface of the first yoke 81 on the other side Z2 in the first direction Z so as to face each other on one side Z1. In addition, the movable body 6 faces the coil 5 on the other side Z2 in the first direction Z with a second yoke 82 made of a magnetic plate arranged on the other side Z2 in the first direction Z with respect to the coil 5. and a flat second magnet 72 held on the surface of the second yoke 82 on one side Z1 in the first direction Z. As shown in FIG. In this embodiment, the movable body 6 is composed of a first yoke 81 , first magnets 71 , second yokes 82 and second magnets 72 .

The first yoke 81 includes a first plate portion 811 to which the first magnet 71 is fixed, and a pair of yokes that are bent from both ends of the first plate portion 811 in the second direction X toward the other side Z2 in the first direction Z. and a connection portion 812 . The second yoke 82 has a second plate portion 821 to which the second magnet 72 is fixed. It has a pair of projecting portions 822 projecting to the other side X2. In this embodiment, the tip portions of the pair of connecting portions 812 of the first yoke 81 are connected to the pair of overhanging portions 822 by a method such as welding.
Further, on both ends of the first plate portion 811 of the first yoke 81 in the third direction Y, convex portions 813 are formed by protruding both edge portions in the second direction X. The convex portions 813 are The tip is bent so as to face one side Z1 in the first direction Z. As shown in FIG. On the other hand, on both ends of the second plate portion 821 of the second yoke 82 in the third direction Y, convex portions 823 are formed by protruding both edge portions in the second direction X. The convex portions 823 are The tip is bent so as to face the other side Z2 in the first direction Z.
The first magnet 71 and the second magnet 72 are each magnetized to have different poles on one side X1 in the first direction and the other side X2 in the first direction.

(Structure of support 2)
As shown in FIGS. 1 and 6, in the support 2, the case 3 includes a first case member 31 positioned on one side Z1 in the first direction Z and a first case member 31 positioned on the other side Z2 in the first direction Z. A pair of side plate portions 311 provided on both sides of the first case member 31 in the second direction X, and both sides of the second case member 32 in the second direction X. By partially overlapping a pair of side plate portions 321 provided on the side plates 311 and 321 and the plate-like portions 312 and 322 therebetween, the rectangular tubular case 3 is formed. At that time, the coil holder 4 , the coil 5 and the movable body 6 are accommodated between the first case member 31 and the second case member 32 . In this embodiment, both ends of the case 3 in the third direction Y are openings. Further, the case 3 is made of a metal plate such as stainless steel, but may be made of resin.

Notches 313 and 323 are formed at both end portions in the third direction Y of the pair of side plate portions 311 of the first case member 31 and the pair of side plate portions 321 of the second case member 32 . In addition, the side plate portion 321 of the second case member 32 is formed with a notch-shaped concave portion 324 in which a part of the side plate portion 311 of the first case member 31 is arranged when the two case members 31 and 32 are overlapped. It is Two engaging holes 314 are formed on both side plate portions 311 of the first case member 31 so as to be spaced apart in the third direction Y. A window 315 is formed between the engagement holes 314 . On the other hand, two engaging holes 325 are formed separately in the third direction Y in both side plate portions 321 of the second case member 32 .

As shown in FIG. 8, the coil 5 is an air-core coil having an annular planar shape wound in an elliptical shape, and is held by the 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 sides connecting both ends of the two long side portions 51 in the third direction Y. a portion 52; With respect to the coil 5 configured in this way, the long side portion 51 faces the first magnet 71 on one side Z1 in the first direction Z, and the second magnet 72 faces on the other side Z2 in the first direction Z. are doing.

As shown in FIGS. 6 to 8, the overall shape of the coil holder 4 is formed in a rectangular parallelepiped shape to be housed in the case 3, which has a rectangular tubular shape. By forming a shape in which one side Z1 and the other side Z2 are hollowed out, a coil arrangement hole 410 consisting of an oblong through hole in which the coil 5 is arranged is formed at an intermediate position in the first direction Z. It has a plate portion 41 that opens in the first direction Z. As shown in FIG.
Further, side plate portions 411 and 412 are formed on the one side X1 and the other side X2 in the second direction X so as to extend to both the one side Z1 and the other side Z2 in the first direction Z of the plate portion 41 . Each of the side plate portions 411 and 412 has an opening 413 formed at an intermediate position in the third direction Y so as to cut off the other side Z2 in the first direction Z. Both end faces in the direction X are exposed. Therefore, the side plate portions 411 and 412 are separated in the third direction Y on the other side Z2 of the first direction Z, and are connected by the connecting portion 44 on the one side Z1.

On the other hand, on one side Y1 in the third direction Y of the coil holder 4, a side plate portion 414 is formed so as to extend from the plate portion 41 to one side Z1 in the first direction Z, and on the other side Y2 in the third direction Y , a side plate portion 415 extending to both one side Z1 and the other side Z2 in the first direction Z of the plate portion 41 is formed.
In addition, a plurality of groove-shaped recesses 411a and 412a are formed along the first direction Z on the inner surfaces of the side plate portions 411 and 412 arranged on both sides in the second direction X. Each of them communicates with the groove-shaped concave portion 41a.
Further, prismatic reinforcing portions 42 extending in one side Z1 and the other side Z2 in the first direction Z are formed at the four corners of the coil holder 4 to separate the first case member 31 and the second case member 32 from each other. When assembled, the reinforcing portion 42 is engaged with notches 313 and 323 formed in the pair of side plate portions 311 of the first case member 31 and the pair of side plate portions 321 of the second case member 32. there is
Further, claw portions 43 are formed on the outer surfaces of the side plate portions 411 and 412 with which the engaging holes 314 of the first case member 31 and the engaging holes 325 of the second case member 32 are engaged.

(Configuration of first plate 47 and second plate 48)
The support 2 has a first plate 47 that overlaps the coil arrangement hole 410 of the coil holder 4 and the plate portion 41 from one side Z1 in the first direction Z, and at least the air core portion 50 of the coil 5 is filled with The coil 5 is fixed to the first plate 47 and the plate portion 41 with an adhesive. Therefore, the coil 5 faces the first magnet 71 in the first direction Z with the first plate 47 interposed therebetween. Also, the first plate 47 is fixed to the plate portion 41 with an adhesive.
Further, the support 2 has a second plate 48 that overlaps the coil arrangement hole 410 and the plate portion 41 from the other side Z2 in the first direction Z, and the adhesive that fills at least the air core portion 50 of the coil 5 The coil 5 is fixed to the second plate 48 by an adhesive consisting of. Therefore, the coil 5 faces the second magnet 72 in the first direction Z with the second plate 48 interposed therebetween. Also, the second plate 48 is fixed to the plate portion 41 with an adhesive.
The concave portions 41a and the like formed in the plate portion 41 serve as reservoirs for the adhesive.
In this embodiment, the first plate 47 and the second plate 48 are made of non-magnetic material. In this embodiment, the first plate 47 and the second plate 48 are made of metal plates. More specifically, the first plate 47 and the second plate 48 are made of nonmagnetic stainless steel plates.

Here, the first plate 47 has claw-shaped protrusions 472 that obliquely protrude 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-shaped protrusions 482 obliquely protruding from both sides in the second direction X toward the other side Z2 in the first direction Z. As shown in FIG. These protrusions 472 and 482 are held by the coil holder 4 by elastically abutting inside groove-shaped recesses 411 a and 412 a formed on the inner surfaces of the side plate portions 411 and 412 .
The first plate 47 has bent portions 473 bent to one side Z1 in the first direction Z at both ends in the third direction Y, and bent portions 474 bent to the other side Z2 in the first direction Z at both ends in the second direction X. and The second plate 48 has bent portions 483 bent to the other side Z2 in the first direction Z at both ends in the third direction Y, and bent portions 484 bent to one side Z1 in the first direction Z at both ends in the second direction X. and Therefore, the bending portions 473, 474, 483, and 484 of the first plate 47 and the second plate 48 increase the strength against bending.

Thus, in the actuator 1 of this embodiment, the coil 5 is arranged inside the coil arrangement hole 410 penetrating the plate portion 41 of the coil holder 4 in the first direction Z, and the coil arrangement hole 410 and the plate portion 41 are arranged. A first plate 47 is arranged so as to overlap from one side Z1 in the first direction Z. Therefore, when the air core portion 50 of the coil 5 is filled with the adhesive, the adhesive is applied between the coil 5 and the coil holder 4, between the coil 5 and the first plate 47, and between the first plate 47 and the coil holder. It flows between 4. Therefore, when the adhesive is cured, the coil 5, first plate 47, and coil holder 4 are fixed by the adhesive. Therefore, the coil 5 arranged in the coil arrangement hole 410 of the coil holder 4 can be properly adhered to the coil holder 4 . A first plate 47 is interposed between the first magnet 71 and the coil 5 . Therefore, even when the movable body 6 moves to the one side Z1 in the first direction Z, the first magnet 71 and the coil 5 do not come into direct contact with each other, so the coil 5 is less likely to be damaged.

Also, when the second plate 48 is placed after filling the air core portion 50 of the coil 5 with adhesive, the adhesive spreads between the coil 5 and the coil holder 4, between the coil 5 and the first plate 47, and between the coil 5 and the first plate 47. and 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 . Therefore, when the adhesive is cured, the coil 5, first plate 47, second plate 48, and coil holder 4 are fixed by the adhesive. In this state, the second plate 48 is interposed between the second magnet 72 and the coil 5. As shown in FIG. Therefore, even when the movable body 6 moves to the other side Z2 in the first direction Z, the second magnet 72 and the coil 5 do not come into direct contact with each other, so the coil 5 is less likely to be damaged.

Also, since the first plate 47 and the second plate 48 are made of a non-magnetic material, the magnetic flux from the first magnet 71 and the magnetic flux from the second magnet 72 are affected by the first plate 47 and the second plate 48. It will be interlinked with coil 5 without Moreover, since the first plate 47 and the second plate 48 are made of metal plates, the heat generated by the coil 5 can be efficiently released via the first plate 47 and the second plate 48 . Moreover, since the first plate 47 and the second plate 48 are made of stainless steel, the first plate 47 and the second plate 48 have sufficient strength even if the plate thickness is thin.
The coil holder 4 also has recesses 411 a and 421 a that engage with the claw-shaped projections 472 of the first plate 47 or the projections 482 of the second plate 48 to hold the first plate 47 . Therefore, it is not necessary to support the first plate 47 and the second plate 48 with a jig or the like until the adhesive is cured.

(Structure of Connectors 91 and 92)
As shown in FIGS. 2, 3, 7 and 9, the movable body 6 is moved in the second direction X and the third direction Y by connecting bodies 91, 92 provided between the movable body 6 and the support body 2. supported so that it can be moved to

In this embodiment, the connection body 91 is provided at a portion where the first plate portion 811 of the first yoke 81 and the plate-like portion 312 of the first case member 31 face each other in the first direction Z. As shown in FIG. The connection body 92 is provided at a portion where the second plate portion 821 of the second yoke 82 and the plate-like portion 322 of the second case member 32 face each other in the first direction Z. As shown in FIG. More specifically, the connection body 91 is formed in a rectangular parallelepiped shape, and is connected to the central portion of the first plate portion 811 of the first yoke 81 in the second direction X and the third direction Y, and the plate shape of the first case member 31 . 312 are provided at portions facing each other in the first direction Z, and both end surfaces of the connection body 91 in the first direction Z are fixed to the first plate portion 811 and the plate-like portion 312, respectively. The connection body 92 is formed in a rectangular parallelepiped shape. They are provided at portions facing each other in the direction Z, and both end surfaces in the first direction Z of the connection body 92 are fixed to the second plate portion 821 and the plate-like portion 322, respectively.

In this embodiment, the connectors 91 and 92 are viscoelastic members. Therefore, the movable body 6 can be movably supported in the second direction X without using a leaf spring or the like.
Here, viscoelasticity is a property that combines both viscosity and elasticity, and is a property that is conspicuously observed in polymeric substances such as gel-like members, plastics, and rubbers. Therefore, various gel-like members can be used as the viscoelastic member. As the viscoelastic member, 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) Various rubber materials such as rubber, ethylene-propylene-diene rubber, urethane rubber, silicone rubber, fluororubber, thermoplastic elastomer, and modified materials thereof may be used.

In this embodiment, the connectors 91 and 92 are made of silicone gel with a penetration of 90 degrees to 110 degrees. Penetration is defined by JIS-K-2207 and JIS-K-2220, the depth that a 1/4 cone needle with a total load of 9.38g at 25°C penetrates for 5 seconds. is expressed in units of 1/10 mm, and the smaller this value is, the harder it is.
Fixing the connecting bodies 91 and 92 to the first yoke 81 and the second yoke 82, and fixing the connecting bodies 91 and 92 to the first case member 31 and the second case member 32 are performed using an adhesive, a pressure sensitive adhesive, Alternatively, it is performed using the adhesiveness of silicone gel.

As described above, in the actuator 1 of this embodiment, since the connecting bodies 91 and 92 are provided between the movable body 6 and the support body 2, resonance of the movable body 6 can be suppressed.
Here, since the connecting bodies 91 and 92 are provided at positions facing each other in the first direction Z intersecting the second direction X (vibration direction) in the supporting body 2 and the movable body 6, the movable body 6 vibrates in the second direction X, it deforms in the shear direction to prevent resonance. Therefore, even if the movable body 6 vibrates in the second direction X, the change in elastic modulus of the connecting bodies 91 and 92 is small, so resonance of the movable body 6 can be effectively suppressed.

That is, the connecting bodies (connecting bodies 91 and 92) are viscoelastic members (plate-like gel-like members), and have linear or non-linear stretching characteristics depending on the direction of stretching. 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). When it is stretched by being pulled (in the axial direction), it has an elastic property in which the linear component (spring coefficient) is greater than the nonlinear component (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). In this embodiment, when the movable body 6 vibrates in the second direction X, the connecting bodies 91 and 92 are configured to deform in the shear direction. Therefore, in the connecting bodies 91 and 92, when the movable body 6 vibrates in the second direction X, the spring force due to the movement direction is constant. Therefore, by using the spring elements in the shear direction of the connecting bodies 91 and 92, it is possible to improve the reproducibility of the vibration acceleration with respect to the input signal, so that the vibration can be realized with subtle nuances.

Both surfaces of the connecting bodies 91 and 92 in the first direction Z are connected to the movable body 6 and the supporting body 2 by a method such as adhesion. Therefore, since the connecting bodies 91 and 92 reliably follow the movement of the movable body 6, resonance of the movable body 6 can be effectively prevented.
In this case, the connecting bodies 91 , 92 are in a compressed state in the first direction Z between the support 2 and the movable body 6 . Therefore, since the connecting bodies 91 and 92 reliably follow the movement of the movable body 6, resonance of the movable body 6 can be effectively prevented. For example, they are compressed to a thickness about 10% smaller than the thickness of the connecting bodies 91 and 92 in their free state. In FIGS. 2 and 3, the ends of the connecting bodies 91 and 92 are shown overlapping the first yoke 81 or the second yoke 82, but the overlapped portion is the compression margin of the connecting bodies 91 and 92. show.

(Structure of stopper mechanism)
In this embodiment, a stopper mechanism is provided to limit the movable range when the movable body 6 moves in the first direction Z, the second direction X and the third direction Y due to an external impact.
More specifically, as described above, the protrusion 813 is formed on one side Z1 in the first direction Z of the first plate portion 811 of the first yoke 81 so as to protrude toward the plate-like portion 312 of the first case member 31. A convex portion 823 is formed on the other side Z2 of the second plate portion 821 of the second yoke 82 in the first direction Z toward the plate-like portion 322 of the second case member 32 . When the movable body 6 moves in the first direction Z due to an external impact, the projection 813 of the first yoke 81 comes into contact with the plate-like portion 312 of the first case member 31 during the movement to the one side Z1. to regulate the range of movement to the one side Z1. When the movable body 6 moves to the other side Z2 in the first direction Z, the convex portion 823 of the second yoke 82 abuts against the plate-like portion 322 of the second case member 32 to extend the range of movement to the other side Z2. to regulate. In other words, the projections 813 and 823 and the plate-like portions (receiving portions) 312 and 322 of the case members 31 and 32 facing the projections 813 and 823 allow the movable body 6 to move in the first direction Z. A first stopper mechanism is configured to limit the range of movement.
In this case, as shown in FIGS. 2 and 3, when viewed from one side Z1 or the other side Z2 in the first direction Z, the convex portions 813 and 823 are symmetrical with respect to the center of gravity C of the movable body 6. is provided. Looking at the first plate portion 811 and the second plate portion 821 of each of the yokes 81 and 82, the figure center (Fig. Protrusions 813 and 823 are provided point-symmetrically with respect to the position indicated by symbol C of 5). The heights H of the protrusions 813 and 823 are the same for each of the yokes 81 and 82 . The height H of these protrusions 813 and 823 is determined by the connection body 91 provided between the first yoke 81 and the first case member 31 and the height H provided between the second yoke 82 and the second case member 32 . Although it is smaller than the thickness of the connection body 92 (interval T between the plate portions 811 and 821 of the yokes 81 and 82 and the plate portions 312 and 322 of the case members 31 and 32), the convex portions 813, The distance between the plate portions 811, 821 of the yokes 81, 82 and the plate portions 312, 322 of the case members 31, 32 when the plate portions 823 are in contact with the plate portions 312, 322 (that is, the distance between the protrusions 813, 823) Even if the connecting bodies 91 and 92 are compressed to the height H), the functions of the connecting bodies 91 and 92 are set to such an extent that they can be restored to their original positions without being destroyed.
In this case, the moving range of the movable body 6 in the first direction Z is limited to g1 on one side Z1 and on the other side Z2, respectively, as shown in FIG.

In the movable body 6 , both end surfaces of the first plate portion 811 of the first yoke 81 and the second plate portion 821 of the second yoke 82 in the second direction X are the inner surfaces 411 b of the side plate portions 411 and 412 of the coil holder 4 . , 412b in the second direction X. Therefore, the end surfaces of the plate portions 811 and 812 and the inner surfaces 411b and 412b of the side plate portions 411 and 412 come into contact with the movable body 6 when the movable body 6 moves in the second direction X due to an external impact. It is a second stopper mechanism that defines the movable range in the second direction X. In this second stopper mechanism, as shown in FIG. 5, the moving range of the movable body 6 in the second direction X is limited to g2 on one side X1 and on the other side X2.
Further, in the movable body 6 , the pair of connecting portions 812 of the first yoke 81 and the overhanging portion 822 of the second yoke 82 are arranged in openings 413 formed in the side plate portions 411 and 412 of the coil holder 4 . ing. Protruding portions 812a are formed at both ends of the connecting portion 812 in the third direction Y, and the ends of the protruding portions 812a are attached to the end faces 413a of the side plate portions 411 and 421 forming the openings 413. facing each other. Therefore, when the movable body 6 moves in the third direction Y due to an external impact, the projecting portion 812a of the connecting portion 812 and the end surfaces 413a of the side plate portions 411 and 412 come into contact with each other to move the movable body 6 in the third direction Y. It is a third stopper mechanism that defines the range. In this third stopper mechanism, as shown in FIG. 5, the moving range of the movable body 6 in the third direction Y is limited to g3 on one side Y1 and on the other side Y2.

(Structure of power supply substrate 10)
In the actuator 1 of the present embodiment, the power feeding substrate 10 is provided at the end of the coil holder 4 on one side Y1 in the third direction Y. As shown in FIG. A coil wire 56 forming the coil 5 is connected to the lands 16a and 16b of the power supply substrate 10 by soldering or the like. In this embodiment, the feed substrate 10 is a rigid substrate.
In this embodiment, the power supply substrate 10 is held in an opening surrounded by the side plate portions 411 , 412 , 414 on one side in the third direction Y of the coil holder 4 . In this embodiment, the coil wire 56 passes through two guide grooves 41c formed on the surface of the end portion of the plate portion 41 of the coil holder 4 on the other side Z2 in the first direction Z, and extends from the coil 5 in the third direction Y. , extends from one side Z1 toward the other side Z2 in the first direction Z, and is connected to the power supply board 10 .

In this embodiment, the coil holder 4 has a pair of side plate portions 411 and 412 facing each other in the second direction X and extending in the first direction Z on one side Y1 of the side plate portions 411 and 412 . slits 411t and 412t are formed, and both ends of the power supply board 10 in the second direction X are fitted inside the slits 411t and 412t, respectively. Therefore, the power supply substrate 10 is held by the coil holder 4 along the side plate portion 414 of the coil holder 4 at a position exposed from the case 3 . In this embodiment, after the ends of the feeder board 10 are fitted into the slits 411t and 412t, the coil holder 4 and the feeder board 10 are further fixed with an adhesive to suppress the vibration of the feeder board 10 .

As described above, in this embodiment, since the power supply board 10 is held by the coil holder 4 covered with the case 3 , the impact at the time of dropping is less likely to propagate to the power supply board 10 through the case 3 . Moreover, even if the impact of the drop propagates to the coil holder 4 , since the power supply board 10 moves together with the coil holder 4 , the coil wire 56 is unlikely to be pulled. Therefore, the coil wire 56 is less likely to break due to the impact when dropped, so the drop impact resistance performance can be improved.

Further, as shown in FIG. 5 , the power supply board 10 is provided along the side surface of the coil holder 4 . Therefore, it is difficult for the power supply board 10 to be directly subjected to a shock when dropped.

In addition, in the coil holder 4, the distance L between the power supply board 10 and the movable body 6 is the projection 812a in the connecting portion 812 of the yokes 81 and 82 that are the third stopper mechanisms and the openings of the side plate portions 411 and 412 of the coil holder 4. It is set larger than the distance g3 from the end face 413a facing the portion 413. As shown in FIG. Therefore, even if the movable body 6 moves and the coil holder 4 collides with the movable body 6 due to the impact of the drop, the impact does not easily propagate to the power supply board 10 because it does not collide with the power supply board 10 . Therefore, it is unlikely that the coil wire 56 will break due to the impact when dropped.

(motion)
In the actuator 1 of this embodiment, when power is supplied to the coil 5 from the outside (upper device) through the power supply board 10, the magnetic drive circuit 1a including the coil 5, the first magnet 71 and the second magnet 72 causes the movable body 6 to move. reciprocates in the second direction X. Therefore, the user holding the actuator 1 in his/her hand can obtain information from the vibrations from the actuator 1 . At that time, the frequency of the signal waveform applied to the coil 5 is changed according to the information to be transmitted. Further, the polarity of the signal waveform applied to the coil 5 is reversed. At this time, a difference in gradualness is provided with respect to the voltage change between the period when the polarity of the driving signal is negative and the period when the polarity is positive. As a result, a difference occurs between the acceleration when the movable body 6 moves in one side X1 in the second direction X and the acceleration when the movable body 6 moves in the other side X2 in the second direction X. FIG. Therefore, it is possible to make the user feel the illusion that the actuator 1 moves in the second direction X in one side X1 or the other side X2.

When an impact is applied from the outside due to dropping or the like, the movement of the movable body 6 in the second direction X is prevented by the first plate portion 811 and the second plate portion 821 and the side plate portions 411 and 412 of the coil holder 4 . The moving range of the movable body 6 is restricted by the second stopper mechanism composed of the inner surfaces 411b and 412b of the . Further, with respect to the movement of the movable body 6 in the third direction Y, the projection 812a provided on the connecting portion 812 of the first yoke 81 and the end surface of the side plate portion 411 of the coil holder 4 facing the opening 413 413a restricts the movement range of the movable body 6. As shown in FIG.
During the movements in the second direction X and the third direction Y, the connectors 91 and 92 are deformed in the shear direction.

On the other hand, when the movable body 6 moves in the first direction Z due to an impact from the outside, when it moves in the one side Z1, the connection body disposed between the first yoke 81 and the first case member 31 91 is compressed, and the connector 92 arranged between the second yoke 82 and the second case member 32 is stretched. Among them, the connection body 91 arranged between the first yoke 81 and the first case member 31 has its compression range restricted when the projection 813 of the first yoke 81 contacts the first case member 31 . and will not be crushed further.
On the other hand, when the movable body 6 moves in the other side Z2 of the first direction Z, the connecting body 92 arranged between the second yoke 82 and the second case member 32 is compressed, and the first yoke 81 and The connector 91 arranged between the first case member 31 is stretched. Among them, the connection body 92 disposed between the second yoke 82 and the second case member 32 has its compression range restricted when the projection 823 of the second yoke 82 contacts the second case member 32 . and will not be crushed further.
Therefore, even when moving to either side of the first direction Z, the compression range of the connecting bodies 91 and 92 is limited by the first stopper mechanism to the range in which the connecting bodies 91 and 92 can be restored, and the function is maintained effectively. can do.
The range of movement in the first direction Z can be appropriately set by adjusting the height H of the protrusions 813 and 823 .

(Other embodiments)
In the above embodiment, the protrusions 813 and 823 are provided on the first yoke 81 and the second yoke 82, but instead of providing the protrusions on the first yoke and the second yoke, the protrusions are made of members separate from these yokes. The protruding portion may be configured by the member that is formed and fixed to the first plate portion of the first yoke and the second plate portion of the second yoke, respectively. In that case, the convex portion can also be formed of a non-magnetic material such as resin.

FIG. 10 shows an example in which projections are formed on an auxiliary yoke member made of a magnetic material that is manufactured separately from the first yoke and the second yoke. In the following description, elements common to the above embodiment, such as the first yoke and the second yoke, are given the same reference numerals to simplify the description.
The first plate portion 811 of the first yoke 81 and the second plate portion 821 of the second yoke 82 are formed in a flat plate shape with no projections. The auxiliary yoke members 85 and 86 are formed in the same plate shape as the first plate portion 811 and the second plate portion 821 as a whole. Protrusions 851 and 861 are formed by protruding . Then, the auxiliary yoke member 85 is fixed so as to be overlapped on one side Z1 of the first plate portion 811 of the first yoke 81 in the first direction Z, and the other side of the second plate portion 821 of the second yoke 82 in the first direction Z is fixed. The auxiliary yoke member 86 is fixed so as to be overlapped on the side Z2. The protrusions 851 and 861 are bent so that the tips of the auxiliary yoke member 85 fixed to the first yoke 81 face one side Z1 in the first direction Z, and are fixed to the second yoke 82. The tip of the auxiliary yoke member 86 is bent so as to face the other side Z2 in the first direction Z. As shown in FIG.

Therefore, the projections 851 and 861 of these auxiliary yoke members 85 and 86 face the first case member 31 or the second case member 32, and these projections 851 and 861 and the case members 31 and 32 are plate-shaped. A first stopper mechanism is configured between the portions (receiving portions) 312 and 322 . In this case as well, the heights of the projections 851 and 861 are such that the connection bodies 91 and 92 can be restored to their original states even when the connection bodies 91 and 92 are compressed until the tips of the projections 851 and 861 come into contact with the case 3. It is set to the dimensions of approx. Therefore, when the movable body 6 moves in the first direction Z due to an external impact, one of the projections 851 and 861 contacts the case 3, crushing the connecting bodies 91 and 92 and impairing their function. to prevent In FIG. 10, two connectors 91 and 92 are provided on each of the auxiliary yoke members 85 and 86 at intervals in the third direction Y. As shown in FIG.
Further, since the auxiliary yoke members 85 and 86 are fixed to the first yoke 81 and the second yoke 82, magnetic flux from the magnets 71 and 72 can be concentrated to prevent magnetic leakage from the yokes 81 and 82. can. Also, the weight of the yokes 81 and 82 is increased by the auxiliary yoke members 85 and 86 . Therefore, by appropriately adjusting the weights of the auxiliary yoke members 85 and 86, the weight of the movable body 6 can be adjusted, and an actuator with desired vibration characteristics can be designed.

In addition, since the auxiliary yoke members 85 and 86 are formed in a plate shape and overlapped only with the first plate portion 811 of the first yoke 81 and the second plate portion 821 of the second yoke, the first direction Z direction , the dimensions in the second direction X and the third direction remain unchanged. It is conceivable to increase the thickness of the first yoke and the second yoke by the thickness of the auxiliary yoke members 85 and 86. increase, leading to an increase in the size of the apparatus. By fixing the plate-shaped auxiliary yoke members 85 and 86 to overlap the first plate portion 811 and the second plate portion 821, it is possible to suppress an increase in the size of the device.

In the above embodiment, the coil holder 4 and the coil 5 are provided on the support 2, and the permanent magnets (first magnet 71 and second magnet 72) and yokes (first yoke 81 and second yoke 82) are movable. 6, the coil holder 4 and the coil 5 are provided on the movable body 6, and the permanent magnets (first magnet 71 and second magnet 72) and yokes (first yoke 81 and second yoke 82) are provided on the support body 2. It may be applied to the provided actuator.

DESCRIPTION OF SYMBOLS 1... Actuator 1a... Magnetic drive circuit 2... Support body 3... Case 4... Coil holder 5... Coil 6... Movable body 10... Power supply substrate 16a, 16b... Land 31... First case member , 32... Second case member 41... Plate portion 41c... Guide groove 47... First plate 48... Second plate 50... Air core portion 51... Long side portion 52... Short side portion 56... Coil wire 71 First magnet 72 Second magnet 81 First yoke 82 Second yoke 91, 92 Connector 411, 412, 413, 415 Side plate 410 Coil arrangement hole , 413... Opening 413a... End face 414t, 415t... Slit 811... First plate part 812... Connection part 812a... Protrusion part 821... Second plate part 812... Connection part 822... Overhang part 813 , 823... Protrusions 85, 86... Auxiliary yoke members 851, 861... Protrusions C... Gravity center X... Second direction Y... Third direction Z... First direction

Claims (7)

a support, a movable body movably supported by the support, a coil provided on the support, and a first magnet provided on the movable body and facing the coil in a first direction and a magnetic drive circuit for driving the movable body in a second direction crossing the first direction, between positions where the support and the movable body face each other in the first direction. (2) a connection body having elasticity or viscoelasticity disposed so as to be in contact with both the support body and the movable body; and a stopper mechanism that regulates with
A yoke made of a magnetic material for fixing the first magnet is provided on the movable body, and the connection body is provided between the side of the yoke opposite to the side where the first magnet is fixed and the support. wherein the stopper mechanism comprises a projection provided on the yoke along the first direction, and a receiving portion provided on the support body and abutting against the projection. 2. The actuator according to claim 1 , wherein the convex portion is formed by bending a portion of the yoke toward the support. 2. The actuator according to claim 1 , wherein the convex portion is made of a member separate from the yoke, and is fixed to the surface of the yoke on the side facing the support. 4. The convex portion according to any one of claims 1 to 3 , wherein a plurality of the convex portions are provided point-symmetrically with respect to the center of gravity of the movable body when viewed from one side in the first direction. actuator. The movable body is provided with a second magnet facing the coil on the side opposite to the side facing the first magnet, and the yoke includes a first plate fixing the first magnet, and the second magnet. a second plate portion for fixing a magnet; the support has a case surrounding the outside of the yoke; and the case , respectively, and the convex portions are provided on the first plate portion and the second plate portion, respectively. actuator. 6. A second stopper mechanism for restricting a movable range of said movable body in said second direction is provided between said support and said movable body. Actuator as described in . A third stopper mechanism is provided between the support and the movable body for restricting a movable range in a third direction perpendicular to both the first direction and the second direction. Item 7. The actuator according to any one of Items 1 to 6 .

Images