JP2020015009A - Actuator - Google Patents

Abstract

To provide an actuator, which can be suppressed from being enlarged in size while regulating movement of a movable body at the time of a drop impact and the like and effectively protecting a function of a connection body.SOLUTION: The actuator comprises: a support body; a movable body movably supported on the support body; a coil provided in a member of one of the support body and the movable body; and a first magnet, provided in a member of the other of the support member and the movable body, which opposes in a first direction to the coil, and further has a magnetic-drive circuit that drives the movable body in a second direction crossing the first direction, which further comprises, at a position where the support body opposes in the first direction to the movable body, a connection body made of elastic materials or viscoelastic materials arranged to contact both of the support body and the movable body and a stopper mechanism that restricts a movement range in the first direction of the movable body in a range in which the connection body can be restored.SELECTED DRAWING: Figure 2

Description

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

  As an actuator that is used for an operation member of a game machine and generates various vibrations, a device that generates vibration by a magnetic drive mechanism described in Patent Literature 1 has been proposed. The actuator vibrates the movable body in a second direction or a third direction that intersects the first direction with respect to the support by a magnetic drive circuit including a coil and a magnet opposed in the first direction. In the case of the structure described in Patent Document 1, the magnet is held by a yoke made of a magnetic material provided on a support. In addition, a connecting body made of a gel damper member is provided between the support and the movable body so as to connect the both.

JP-A-2006-127789

In the actuator described in Patent Literature 1, when the movable body moves due to a drop impact or the like, the movable body comes into contact with the support when the movable body moves in a direction (second direction or third direction) along the vibration surface. The range of movement is limited, at which time the connector deforms in the shear direction. On the other hand, when the movable body moves in the first direction orthogonal to the vibration surface due to a drop impact or the like, the connecting body is deformed in the direction of compression or expansion. This connecting body is formed of a material having elasticity or viscoelasticity, and if crushed strongly 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 relatively four magnetic drive circuits are arranged between these magnetic drive circuits (that is, in the direction of 45 °) and at the center position of the actuator. A thick connecting body is provided. For this reason, even if the movable body moves in the first direction due to a drop impact, the connection body is hardly crushed and crushed.
However, according to the structure of Patent Document 1, it is necessary to secure a space for providing the connection body around the magnetic drive circuit, so that the actuator becomes larger in the direction along the vibration surface.

  The present invention has been made in view of such circumstances, and suppresses the increase in the size of the device while effectively protecting the function of the connected body by restricting the movement of the movable body at the time 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 a support body or a movable body. A magnetic drive circuit that includes a first magnet provided on the other side member and faces the coil in a first direction, and drives the movable body in a second direction that intersects the first direction; A connecting member having elasticity or viscoelasticity arranged between the position where the support and the movable body oppose each other in the first direction, so as to be in contact with both the support and the movable body; A stopper mechanism that regulates a moving range of the movable body in one direction within a range where the connecting body can be restored.

  In the present invention, by providing the stopper mechanism for restricting the movement of the movable body and the support in the facing direction (first direction), the movable body and the support are moved in the first direction by a drop impact or the like and connected. Even if the body is compressed and deformed, the relative movement range between the movable body and the support is restricted to a range that can be restored without crushing the connected body, preventing the function of the connected body from being destroyed Is done.

  In the actuator according to the present invention, the coil is provided on the support, the movable body is provided with the first magnet and a yoke made of a magnetic material for fixing the first magnet, and the first magnet of the yoke is provided. The connecting body is provided between the side opposite to the side to which is fixed and the support, and the stopper mechanism includes: a protrusion provided on the yoke along the first direction; And a receiving portion that contacts the convex portion.

When the connecting body is provided on the yoke, and when the connecting body is provided between the opposing portions of the yoke and the coil, the first magnet is provided on the yoke. Since one magnet and the connector are arranged side by side in the direction of the vibration surface, the installation space is increased. In order to suppress an increase in the size of the device, the first magnet becomes smaller and the driving force decreases. On the other hand, when the connecting body is arranged between the yoke and the support, it is possible to secure a large space between the yoke and the coil in the direction of the vibration surface, 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, since the connecting body is crushed between the yoke and the support, the connecting body may be broken. If the thickness of the connecting body is increased in order to avoid this, the size of the device is increased.
In the present invention, by providing the stopper mechanism in which the convex portion of the yoke abuts on the receiving portion of the support, the connection body is limited to a range that can be restored without being crushed. 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 according to the aspect of the invention, the protrusion may be formed by bending a part of the yoke toward the support.
The yoke is a member that constitutes a part of the magnetic drive circuit, and is formed to be relatively thick, so that if a part is bent to form a convex part, it is possible to obtain a convex part that is not easily deformed by a drop impact. Can be.

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

In the actuator according to the aspect of the invention, it is preferable that a plurality of the protrusions be provided point-symmetrically with respect to a 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.

  As 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 provided with the first magnet. A first plate portion for fixing, and a second plate portion for fixing the second magnet, wherein the support has a case surrounding the outside of the yoke; The protrusion may be provided between the case and the second plate and the case, and the protrusion may be provided on the first plate and the second plate.

  This actuator has a symmetrical structure on both sides of the coil and is balanced, so that stable vibration can be generated. Also in this case, it is possible to protect the connection body in one direction and the other direction in the first direction at the time of a drop impact.

In the actuator according to the aspect of the invention, it is preferable that a second stopper mechanism that regulates a movable range of the movable body in the second direction is provided between the support and the movable body. It is preferable that a third stopper mechanism that regulates a movable range in a third direction orthogonal to both the first direction and the second direction is provided between the support and the movable body.
Since the movable range of the movable body is regulated by the second stopper mechanism or the third stopper mechanism, it is possible to effectively prevent the occurrence of damage due to a drop impact or the like.

  ADVANTAGE OF THE INVENTION According to this invention, while 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 can suppress enlargement of an apparatus.

It is a perspective view showing one embodiment of an actuator of the present invention. FIG. 2 is a YZ sectional view of a center position in the X direction of the actuator shown in FIG. 1. FIG. 2 is an XZ sectional view of a center position in a Y direction of the actuator illustrated in FIG. 1. FIG. 2 is an XY cross-sectional view of the actuator shown in FIG. 1 at a center position in a Z direction. FIG. 2 is a plan view in which a second case member has been removed from the actuator shown in FIG. 1. FIG. 2 is a perspective view in which a case is disassembled from the actuator shown in FIG. 1. FIG. 7 is a perspective view in which a case is removed from FIG. 6 and a first yoke and a second yoke are disassembled. It is the perspective view which removed the yoke from FIG. 7, and disassembled the coil etc. from the coil holder. It is a perspective view which shows the assembly state of the movable body which has a yoke and a magnet. FIG. 10 is a perspective view showing a modified example of an assembled state of a yoke and the like similar to FIG. 9.

Hereinafter, embodiments of the actuator according to the present invention will be described with reference to the drawings.
In the following description, three directions that intersect each other are referred to as a first direction, a second direction, and a third direction, respectively. In the present embodiment, the first direction is the Z-axis direction, the second direction is the X-axis direction, and the third direction is the third direction. The direction is referred to as a Y-axis direction, and hereinafter, a first direction Z, a second direction X, and a third direction Y will be described. The first direction Z, the second direction X, and the third direction Y are directions orthogonal to each other. Also, X1 is attached to one side in the second direction X, X2 is attached to the other side in the second direction X, Y1 is attached to one side in the third direction Y, and Y2 is attached to the other side in the third direction Y. , Z1 is added to one side in the first direction Z, and Z2 is added to the other side in the first direction Z.

(overall structure)
FIG. 1 is a perspective view illustrating an appearance of an actuator 1 according to an embodiment.
The actuator 1 shown in FIG. 1 has a rectangular parallelepiped shape whose longitudinal direction is oriented in the third direction Y, and notifies a user holding the actuator 1 of information by vibration in the second direction X. Therefore, the actuator 1 can be used as an operation member or the like of a game machine, 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. A movable body 6 movably supported 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 movable body 6 is moved by the magnetic drive circuit 1a. Output information by vibrating in the second direction X. The magnetic drive circuit 1a has a coil 5 and permanent magnets 71 and 72 facing each other in the first direction Z. 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 the present embodiment, as described below, the support 2 has a case 3, a coil holder 4, a coil 5, and a power supply substrate 10, and the movable body 6 includes a permanent magnet (the first magnet 71 and the first magnet 71). 2) and a yoke (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. Further, the movable body 6 is supported by the support 2 via connectors 91 and 92 provided between the movable body 6 and the support 2. The connection bodies 91 and 92 are formed 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 disposed on one side Z1 in the first direction Z with respect to the coil 5, and The first yoke 81 has a plate-like first magnet 71 held on a surface of the other side Z2 in the first direction Z so as to face the one side Z1. Further, the movable body 6 is opposed to the second yoke 82 made of a magnetic plate disposed on the other side Z2 in the first direction Z with respect to the coil 5 so as to face the coil 5 on the other side Z2 in the first direction Z. The second yoke 82 has a plate-shaped second magnet 72 held on a surface on one side Z1 in the first direction Z. In the present embodiment, the movable body 6 includes a first yoke 81, a first magnet 71, a second yoke 82, and a second magnet 72.

The first yoke 81 includes a first plate portion 811 to which the first magnet 71 is fixed, and a pair of first plate portions 811 bent from both ends in the second direction X to the other side Z2 in the first direction Z. And a connecting portion 812. The second yoke 82 has a second plate portion 821 to which the second magnet 72 is fixed, and an intermediate portion of the second plate portion 821 in the third direction Y has one side X1 in the second direction X and It has a pair of overhangs 822 that overhang the other side X2. In the present embodiment, tips of a pair of connecting portions 812 of the first yoke 81 are connected to the pair of overhang portions 822 by a method such as welding.
In addition, at both ends in the third direction Y of the first plate portion 811 of the first yoke 81, projections 813 formed by projecting both edges in the second direction X are formed. The tip is bent so as to face one side Z1 in the first direction Z. On the other hand, at both ends in the third direction Y of the second plate portion 821 of the second yoke 82, there are formed protrusions 823 formed by projecting both edges in the second direction X. The tip is bent so as to face the other side Z2 in the first direction Z.
Each of the first magnet 71 and the second magnet 72 is magnetized to a different pole on one side X1 in the first direction and on the other side X2 in the first direction.

(Configuration of the support 2)
As shown in FIGS. 1 and 6, in the support 2, the case 3 includes a first case member 31 located on one side Z1 in the first direction Z and a first case member 31 on the other side Z2 in the first direction Z. A second case member 32 overlaps the first case member 31, and 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 Are partially overlapped with each other, and the side plate portions 311 and 321 and the plate-shaped portions 312 and 322 therebetween constitute a rectangular cylindrical case 3. 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, the case 3 has openings at both ends in the third direction Y. The case 3 is made of a metal plate such as stainless steel, but may be made of resin.

  In the pair of side plates 311 of the first case member 31 and the pair of side plates 321 of the second case member 32, notches 313 and 323 are formed at both ends in the third direction Y. A cutout recess 324 is formed in the side plate portion 321 of the second case member 32 for disposing a part of the side plate portion 311 of the first case member 31 when the two case members 31 and 32 are overlapped. Have been. The two side plate portions 311 of the first case member 31 are formed with two engagement holes 314 separated from each other in the third direction Y. The side plate portions 311 on one side X1 in the second direction X A window 315 is formed so as to be located between the engagement holes 314. On the other hand, on both side plate portions 321 of the second case member 32, two engagement holes 325 are formed separately in the third direction Y.

  As shown in FIG. 8, the coil 5 is an air-core coil having an annular planar shape wound in an elliptical shape and held by the coil holder 4. The coil 5 has two long sides 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 sides 51 in the third direction Y. A part 52. The first magnet 71 faces the long side portion 51 on one side Z1 in the first direction Z, and the second magnet 72 faces the other side Z2 in the first direction Z with the coil 5 configured as described above. are doing.

As shown in FIGS. 6 to 8, the coil holder 4 has an overall shape of a rectangular parallelepiped housed in a rectangular cylindrical case 3, and has an intermediate portion in the first direction Z. Except for the above, the one side Z1 and the other side Z2 are formed into a shape that is cut out, so that the coil arrangement hole 410 formed of an oval through hole in which the coil 5 is arranged inside is located at an intermediate position in the first direction Z. It has a plate portion 41 that opens in the first direction Z.
Further, on one side X1 and the other side X2 in the second direction X, side plate portions 411 and 412 extending to both the one side Z1 and the other side Z2 in the first direction Z of the plate portion 41 are formed. The side plate portions 411 and 412 have 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, and the second portion of the plate portion 41 is formed in the opening 413. The end faces on both sides in the direction X are exposed. For this reason, the side plate portions 411 and 412 have a shape separated in the third direction Y on the other side Z2 in the first direction Z, and have a shape connected by the connecting portion 44 on 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. And a side plate portion 415 extending to both one side Z1 and the other side Z2 of the plate portion 41 in the first direction Z.
Further, a plurality of groove-shaped recesses 411a and 412a along the first direction Z are formed on the inner surfaces of the side plate portions 411 and 412 arranged on both sides in the second direction X, and a plurality of recesses on the surface of the plate portion 41 are formed. It communicates with each of the groove-shaped concave portions 41a.
Further, at four corners of the coil holder 4, prismatic reinforcing portions 42 extending to one side Z <b> 1 and the other side Z <b> 2 in the first direction Z are formed, and the first case member 31 and the second case member 32 are formed. When combined, the reinforcing portion 42 comes into engagement with the 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. I have.
Further, on outer surfaces of the side plate portions 411 and 412, a claw portion 43 is formed in which an engagement hole 314 of the first case member 31 and an engagement hole 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 overlapping 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 is filled at least in the air core portion 50 of the coil 5. The coil 5 is fixed to the first plate 47 and the plate portion 41 by an adhesive. Therefore, the coil 5 is opposed to the first magnet 71 in the first direction Z via the first plate 47. Further, the first plate 47 is fixed to the plate portion 41 by an adhesive.
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 at least the adhesive filled in the air core portion 50 of the coil 5. The coil 5 is fixed to the second plate 48 by an adhesive composed of Therefore, the coil 5 is opposed to the second magnet 72 via the second plate 48 in the first direction Z. Further, the second plate 48 is fixed to the plate portion 41 by an adhesive.
The concave portion 41a and the like formed in the plate portion 41 serve as a reservoir for the adhesive.
In this embodiment, the first plate 47 and the second plate 48 are made of a non-magnetic material. In the present embodiment, the first plate 47 and the second plate 48 are made of a metal plate. More specifically, the first plate 47 and the second plate 48 are made of a non-magnetic stainless steel plate.

Here, as shown in FIG. 8, the first plate 47 has a claw-shaped convex portion 472 projecting obliquely from both sides in the second direction X to one side Z1 in the first direction Z. Further, the second plate 48 has a claw-shaped convex portion 482 projecting obliquely from both sides in the second direction X to the other side Z2 in the first direction Z. The protrusions 472 and 482 elastically abut inside groove-shaped recesses 411 a and 412 a formed on the inner surfaces of the side plates 411 and 412, and are held by the coil holder 4.
The first plate 47 has a bent portion 473 bent at one end Z1 in the first direction Z at both ends in the third direction Y, and a bent portion 474 bent at the other end Z2 in the first direction Z at both ends in the second direction X. And The second plate 48 has a bent portion 483 bent at both ends in the third direction Y to the other side Z2 in the first direction Z, and a bent portion 484 bent at both ends in the second direction X to one side Z1 in the first direction Z. And Therefore, the bending strength of the first plate 47 and the second plate 48 is increased by the bent portions 473, 474, 483, and 484.

  Thus, in the actuator 1 of the present 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 The first plate 47 is disposed so as to overlap from one side Z1 in the first direction Z. For this reason, when the adhesive is filled in the air core 50 of the coil 5, 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. Flows in between 4. Therefore, when the adhesive is cured, the coil 5, the first plate 47, and the coil holder 4 are fixed by the adhesive. For this reason, the coil 5 arranged in the coil arrangement hole 410 of the coil holder 4 can be properly bonded to the coil holder 4. Further, a first plate 47 is interposed between the first magnet 71 and the coil 5. Therefore, even when the movable body 6 moves to one side Z1 in the first direction Z, the first magnet 71 and the coil 5 do not directly come into contact with each other, so that the coil 5 is hardly damaged.

  When the second plate 48 is overlaid after the air core 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 flows smoothly between the first plate 47 and the coil holder 4, and also flows 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, the first plate 47, the second plate 48, and the 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. For this reason, 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 directly contact with each other, so that the coil 5 is not easily damaged.

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. Instead, it is linked with the coil 5. Further, since the first plate 47 and the second plate 48 are made of a metal plate, heat generated in the coil 5 can be efficiently released through the first plate 47 and the second plate 48. Further, since the first plate 47 and the second plate 48 are made of a stainless steel plate, the first plate 47 and the second plate 48 have sufficient strength even when the plate thickness is small.
In addition, the coil holder 4 has concave portions 411 a and 421 a that engage with the claw-shaped protrusion 472 of the first plate 47 or the protrusion 482 of the second plate 48 to hold the first plate 47. Therefore, there is no need to support the first plate 47 and the second plate 48 with a jig or the like until the adhesive is cured.

(Configuration of the connection bodies 91 and 92)
As shown in FIGS. 2, 3, 7 and 9, the movable body 6 is connected to the second body X and the third direction Y by connecting bodies 91 and 92 provided between the movable body 6 and the support 2. It is movably supported.

  In the present embodiment, the connector 91 is provided at a portion where the first plate portion 811 of the first yoke 81 and the plate portion 312 of the first case member 31 face each other in the first direction Z. The connection body 92 is provided at a portion where the second plate portion 821 of the second yoke 82 and the plate portion 322 of the second case member 32 face each other in the first direction Z. More specifically, the connecting body 91 is formed in a rectangular parallelepiped shape, and the center 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 are formed. The portion 312 is provided at a portion facing the first direction Z, and both end surfaces of the connector 91 in the first direction Z are fixed to the first plate portion 811 and the plate portion 312, respectively. The connection body 92 is formed in a rectangular parallelepiped shape, and the center of the second plate portion 821 of the second yoke 82 in the second direction X and the third direction Y and the plate-shaped portion 322 of the second case member 32 are the first. The connector 92 is provided at a portion facing in the direction Z, and both end faces in the first direction Z of the connector 92 are fixed to the second plate portion 821 and the plate-shaped portion 322, respectively.

In this embodiment, the connection bodies 91 and 92 are viscoelastic members. Therefore, the movable body 6 can be supported movably in the second direction X without using a plate spring or the like.
Here, the viscoelasticity is a property combining both viscosity and elasticity, and is a property remarkably observed in a polymer material such as a gel-like member, plastic, and rubber. Therefore, various gel members can be used as the viscoelastic member. As the viscoelastic member, natural rubber, diene rubber (for example, styrene / butadiene rubber, isoprene rubber, butadiene rubber), chloroprene rubber, acrylonitrile / butadiene rubber, and the like, non-diene rubber (for example, butyl rubber, ethylene / propylene) Various rubber materials such as rubber, ethylene / propylene / diene rubber, urethane rubber, silicone rubber, fluorine rubber, and thermoplastic elastomers, and modified materials thereof may be used.

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

As described above, in the actuator 1 according to the present embodiment, since the connectors 91 and 92 are provided between the movable body 6 and the support 2, resonance of the movable body 6 can be suppressed.
Here, since the connecting bodies 91 and 92 are provided at positions opposed to each other in the first direction Z that intersects the second direction X (the vibration direction) between the support 2 and the movable body 6, When vibrated in the second direction X, it is deformed in the shear direction to prevent resonance. For this reason, even if the movable body 6 vibrates in the second direction X, the change in the elastic modulus of the connecting bodies 91 and 92 is small, so that the resonance of the movable body 6 can be effectively suppressed.

  That is, the connection bodies (connection bodies 91 and 92) are viscoelastic members (plate-like gel members) and have linear or non-linear expansion / contraction characteristics depending on the expansion / contraction direction. For example, when the connecting bodies 91 and 92 are compressed in the thickness direction (axial direction) by being pressed in the thickness direction (axial direction), they have expansion / contraction characteristics in which a non-linear component is larger than a linear component (spring coefficient). When it is stretched by being pulled (in the axial direction), it has expansion and contraction characteristics in which a linear component (spring coefficient) is larger than a non-linear component (spring coefficient). Further, when the connecting bodies 91 and 92 are deformed in a direction (shear direction) intersecting with the thickness direction (axial direction), they are deformed in a direction in which the connecting bodies 91 and 92 are pulled and extended even if they move in any direction. The linear component (spring coefficient) has a larger deformation characteristic 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 becomes constant. Therefore, the reproducibility of the vibration acceleration with respect to the input signal can be improved by using the spring elements of the connecting bodies 91 and 92 in the shear direction, so that the vibration can be realized with subtle nuances.

The connecting bodies 91 and 92 are both connected to the movable body 6 and the support 2 by a method such as bonding on both surfaces in the first direction Z. 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 and 92 are in a state of being compressed 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, the connecting members 91 and 92 are compressed to a thickness that is smaller by about 10% than the thickness in a free state. 2 and 3, the ends of the connecting bodies 91 and 92 are shown as overlapping the first yoke 81 or the second yoke 82, but the overlapping portion is a 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, a protrusion 813 is formed on one side Z1 of the first plate portion 811 of the first yoke 81 in the first direction Z so as to project toward the plate-like portion 312 of the first case member 31. A projection 823 is formed on the other side Z2 of the second yoke 82 in the first direction Z of the second plate 821 toward the plate 322 of the second case member 32. When the movable body 6 moves in the first direction Z due to an external impact, when moving to the one side Z1, the convex portion 813 of the first yoke 81 comes into contact with the plate portion 312 of the first case member 31. Thus, the range of movement to one side Z1 is regulated. 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 comes into contact with the plate-shaped portion 322 of the second case member 32, and the moving range to the other side Z2. Regulate. In other words, the projections 813 and 823 and the plate-shaped portions (receiving portions) 312 and 322 of the case members 31 and 32 where the projections 813 and 823 face each other, in the first direction Z of the movable body 6. A first stopper mechanism for limiting a moving range is configured.
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 protrusions 813 and 823 are point-symmetric 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 when viewed from one side Z1 or the other side Z2 of the plate portions 811 and 821 in the first direction Z (FIG. The projections 813 and 823 are provided point-symmetrically with respect to the position indicated by the symbol C of No. 5). The height H of each of the protrusions 813 and 823 is the same for each of the yokes 81 and 82. The heights H of the projections 813 and 823 are provided between the connecting body 91 provided between the first yoke 81 and the first case member 31 and between the second yoke 82 and the second case member 32. Is smaller than the thickness of the connecting body 92 (the 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), but the convex portion 813 The distance 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 when the 823 contacts the plate portions 312 and 322 (that is, the protrusions 813 and 823). Even when the connection bodies 91 and 92 are compressed to the height H), the connection bodies 91 and 92 are set to such an extent that the functions of the connection bodies 91 and 92 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 the range of g1 on one side Z1 and the other side Z2, respectively, as shown in FIG.

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

(Configuration of the power supply substrate 10)
In the actuator 1 of the present embodiment, the power supply substrate 10 is provided at one end Y1 of the coil holder 4 in the third direction Y. A coil wire 56 constituting the coil 5 is connected to the lands 16a and 16b of the power supply board 10 by soldering or the like. In the present embodiment, the power supply substrate 10 is a rigid substrate.
In the present embodiment, the power supply substrate 10 is held in an opening surrounded by the side plates 411, 412, and 414 on one side in the third direction Y of the coil holder 4. In the present embodiment, the coil wire 56 passes from the coil 5 in the third direction Y through two guide grooves 41c formed on the other side Z2 of the end of the plate portion 41 of the coil holder 4 in the first direction Z. After being pulled out to one side Y1 of the first direction Z, it extends from one side Z1 in the first direction Z to the other side Z2 and is connected to the power supply board 10.

  In the present embodiment, the coil holder 4 includes a pair of side plates 411 and 412 opposed to each other in the second direction X at one end Y1 in the second direction Y and a pair extending to one side Z1 in the first direction Z. Are formed, and both ends of the power supply substrate 10 on both sides in the second direction X are fitted inside the slits 411t and 412t, respectively. Accordingly, the power supply board 10 is held by the coil holder 4 along the side plate 414 of the coil holder 4 at a position exposed from the case 3. In the present embodiment, after the end of the power supply substrate 10 is fitted into the slits 411t and 412t, the coil holder 4 and the power supply substrate 10 are further fixed with an adhesive to suppress vibration of the power supply substrate 10.

  As described above, in the present embodiment, since the power supply board 10 is held by the coil holder 4 covered by the case 3, it is difficult for an impact at the time of drop to propagate to the power supply board 10 via the case 3. In addition, even when the impact at the time of the drop propagates to the coil holder 4, the power supply board 10 moves together with the coil holder 4, so that the situation where the coil wire 56 is pulled hardly occurs. Therefore, it is unlikely that the coil wire 56 will be disconnected due to the impact at the time of dropping, so that the drop impact resistance can be improved.

  As shown in FIG. 5, the power supply board 10 is provided along the side surface of the coil holder 4. For this reason, a situation in which a shock at the time of a drop is directly applied to the power supply board 10 is unlikely to occur, and a situation in which the coil wire 56 is disconnected due to a shock at the time of a fall is less likely to occur.

  The distance L between the power supply substrate 10 and the movable body 6 is determined by the distance between the protrusion 812 a of the connecting portion 812 of the yoke 81, 82, which is the third stopper mechanism, and the opening of the side plate portions 411, 412 of the coil holder 4. The distance g3 from the end surface 413a facing the portion 413 is set to be larger than the distance g3. Therefore, even if the movable body 6 moves due to the impact at the time of dropping and hits the coil holder 4 and the movable body 6, the movable body 6 does not collide with the power supply board 10, so that the impact at that time hardly propagates to the power supply board 10. Therefore, it is unlikely that the coil wire 56 will be disconnected due to the impact at the time of dropping.

(motion)
In the actuator 1 of the present embodiment, when power is supplied to the coil 5 from the outside (upper device) via the power supply substrate 10, the movable body 6 is driven by the magnetic drive circuit 1 a including the coil 5, the first magnet 71, and the second magnet 72. Reciprocates in the second direction X. Therefore, a user holding the actuator 1 can obtain information by the vibration from the actuator 1. At this time, the frequency of the signal waveform applied to the coil 5 is changed according to the information to be transmitted. The polarity of the signal waveform applied to the coil 5 is inverted. At this time, a difference between the change in the voltage and the change in the voltage between the negative period and the positive period of the drive signal is provided. As a result, a difference occurs between the acceleration when the movable body 6 moves to one side X1 in the second direction X and the acceleration when the movable body 6 moves to the other side X2 in the second direction X. Therefore, the user can feel an illusion that the actuator 1 moves to one side X1 or the other side X2 in the second direction X.

Then, when an impact is applied from the outside due to dropping or the like, the first plate portion 811 and the second plate portion 821 and the side plate portions 411 and 412 of the coil holder 4 are prevented from moving in the second direction X of the movable body 6. The movable range of the movable body 6 is regulated by the second stopper mechanism including the inner surfaces 411b and 412b. In addition, for the movement of the movable body 6 in the third direction Y, the end face facing the protrusion 812 a provided on the connecting portion 812 of the first yoke 81 and the opening 413 of the side plate 411 of the coil holder 4. The movable range of the movable body 6 is regulated by the third stopper mechanism 413a.
In the movement in the second direction X and the third direction Y, the connectors 91 and 92 are deformed in the shearing direction.

On the other hand, when the movable body 6 moves in the first direction Z due to an external impact, or when the movable body 6 moves to one side Z1 of the movable body 6, the connecting body disposed between the first yoke 81 and the first case member 31 The connection 91 disposed between the second yoke 82 and the second case member 32 is stretched. Among these, the connecting body 91 disposed between the first yoke 81 and the first case member 31 regulates the compression range when the convex portion 813 of the first yoke 81 comes into contact with the first case member 31. And will not be crushed anymore.
On the other hand, when the movable body 6 moves to the other side Z2 in the first direction Z, the connecting body 92 disposed between the second yoke 82 and the second case member 32 is compressed, and the first yoke 81 The connecting body 91 disposed between the first case member 31 and the first case member 31 is stretched. Among these, the connection range of the connector 92 disposed between the second yoke 82 and the second case member 32 is restricted when the convex portion 823 of the second yoke 82 contacts the second case member 32. And will not be crushed anymore.
Therefore, regardless of the movement in any direction in the first direction Z, the compression range of the connectors 91 and 92 is limited by the first stopper mechanism to a range in which the connectors 91 and 92 can be restored, and the function is effectively maintained. can do.
The moving range in the first direction Z can be appropriately set by adjusting the height H of the convex portions 813 and 823.

(Other embodiments)
In the above embodiment, the first yoke 81 and the second yoke 82 are provided with the projections 813 and 823. However, the first yoke and the second yoke are not provided with the projections, but are formed by members different from these yokes. The protrusions may be formed by the members described above 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 may be formed of a nonmagnetic material, for example, a resin.

FIG. 10 shows an example in which a convex portion is formed on an auxiliary yoke member made of a magnetic material manufactured separately from the first yoke and the second yoke. In the following description, the same reference numerals are given to the same components as those of the above embodiment such as the first yoke and the second yoke, and the description will be simplified.
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 having no projection. The auxiliary yoke members 85 and 86 are generally formed in a plate shape similarly to the first plate portion 811 and the second plate portion 821, but are provided at both ends in the third direction Y with both edges in the second direction X. Are formed to form protrusions 851 and 861. Then, the auxiliary yoke member 85 is fixed on one side Z1 of the first plate 811 of the first yoke 81 in the first direction Z so as to overlap, and the other of the second plate 821 of the second yoke 82 in the first direction Z. The auxiliary yoke member 86 is fixed on the side Z2 so as to overlap. In the auxiliary yoke member 85 fixed to the first yoke 81, each of the protrusions 851 and 861 is bent so that the tip is directed to one side Z <b> 1 in the first direction Z, and is fixed to the second yoke 82. The auxiliary yoke member 86 is bent such that its tip is directed to the other side Z2 in the first direction Z.

Therefore, the convex portions 851 and 861 of the auxiliary yoke members 85 and 86 face the first case member 31 or the second case member 32, and the plate-like portions of the convex portions 851 and 861 and the case members 31 and 32 are formed. A first stopper mechanism is configured between the portions (receiving portions) 312 and 322. Also in this case, the height of the projections 851 and 861 can be restored to the original state even when the connectors 91 and 92 are compressed until the tips of the projections 851 and 861 abut on the case 3. It is set to the size of about. Therefore, when the movable body 6 moves in the first direction Z due to an external impact, any one of the protrusions 851 and 861 abuts on the case 3 and the connecting bodies 91 and 92 are crushed and their functions are impaired. To prevent that. In FIG. 10, two connecting bodies 91 and 92 are provided on each of the auxiliary yoke members 85 and 86 at intervals in the third direction Y.
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. it can. Further, the weights of the yokes 81, 82 are increased by the amount of the auxiliary yoke members 85, 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 having desired vibration characteristics can be designed.

  In addition, since the auxiliary yoke members 85 and 86 are formed in a plate shape and are overlapped only on 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 is used. And the dimensions in the second direction X and the third direction do not change. 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. In this case, the dimensions are not only in the first direction Z but also in the second direction X. Increase the size of the device. By stacking and fixing the plate-like auxiliary yoke members 85 and 86 on 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 (the first magnet 71 and the second magnet 72) and the yokes (the first yoke 81 and the second yoke 82) are movable. 6, the coil holder 4 and the coil 5 are provided on the movable body 6, and the permanent magnet (the first magnet 71 and the second magnet 72) and the yoke (the first yoke 81 and the second yoke 82) are provided on the support 2. You may apply 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 board, 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 part, 413a ... End face, 414t, 415t ... Slit, 811 ... First plate part, 812 ... Connecting part, 812a ... Protruding part, 821 ... Second plate part, 812 ... Connecting part 822 ... Overhang part, 813 , 823 ... convex, 85, 86 ... Auxiliary yoke members, 851,861 ... protrusion, C ... centroid, X ... second direction, Y ... third direction, Z ... first direction

Claims (8)

  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 a coil provided on the other side member of the support or the movable body. A first magnet opposing the coil in a first direction, and a magnetic drive circuit for driving the movable body in a second direction intersecting the first direction. An elastic or viscoelastic connector arranged between the body and a position facing the first direction so as to be in contact with both the support and the movable body; and the movable body along the first direction. An actuator, comprising: a stopper mechanism for restricting a range of movement of the body within a range where the connection body can restore the body.   The support is provided with the coil, the movable body is provided with the first magnet and a yoke made of a magnetic material for fixing the first magnet, and a side of the yoke to which the first magnet is fixed. Wherein the connecting member is provided between the support member and the opposite side, and the stopper mechanism is provided on the yoke along the first direction and on the support member; The actuator according to claim 1, further comprising a receiving portion that contacts the portion.   The actuator according to claim 2, wherein the protrusion is formed by bending a part of the yoke toward the support.   4. The actuator according to claim 2, wherein the protrusion is formed of a member different from the yoke, and is fixed to a surface of the yoke facing the support. 5.   The plurality of protrusions are provided point-symmetrically with respect to the center of gravity of the movable body when viewed from one side in the first direction, The plurality of protrusions are provided, according to any one of claims 2 to 4, wherein 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 includes a first plate portion fixing the first magnet; A second plate portion for fixing a magnet, wherein the support has a case surrounding the outside of the yoke, and the connecting member is provided between the first plate portion and the case, and the second plate portion. The said convex part is each provided between the said and the case, and the said convex part is each provided in the said 1st board part and the said 2nd board part, The Claim 1 characterized by the above-mentioned. Actuator.   The second stopper mechanism that regulates a movable range of the movable body in the second direction is provided between the support and the movable body. 7. An actuator according to claim 1.   A third stopper mechanism for regulating a movable range in a third direction orthogonal to both the first direction and the second direction is provided between the support and the movable body. Item 8. The actuator according to any one of Items 1 to 7.

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