JP7064925B2 - Actuator - Google Patents

Description

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

As a device for transmitting information by vibration, an actuator including a movable body having a permanent magnet and a support having a coil facing the permanent magnet has been proposed. In the support, the coil is a plate of a coil holder. It is arranged in a coil arrangement hole penetrating the portion (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-127789

In the configuration in which the coil is arranged in the coil arrangement hole penetrating the plate portion of the coil holder as in the configuration described in Patent Document 1, the inner circumference of the coil arrangement hole generated when the coil is arranged inside the coil arrangement hole. It is necessary to pour an adhesive into the gap between the surface and the outer peripheral surface of the coil to bond the coil to the coil holder. However, since the coil is manufactured by winding the coil wire, the outer diameter dimension tends to vary, so that the width of the gap between the inner peripheral surface of the coil placement hole and the outer peripheral surface of the coil tends to fluctuate. .. Therefore, even if a fixed amount of adhesive is poured into the gap, it is difficult to properly fill the gap with the adhesive. Therefore, if the adhesive is excessive compared to the width of the gap, the adhesive overflows from the gap to the outside, while if the adhesive is insufficient compared to the width of the gap, the coil and the coil holder Adhesive strength with and will decrease.

In view of the above problems, an object of the present invention is to provide an actuator capable of appropriately adhering a coil arranged in a coil arrangement hole of a coil holder to a coil holder.

In order to solve the above problems, the actuator of the present invention includes at least one of a movable body, a support, and elasticity and viscoelasticity, and the movable body and the support are located at positions where the movable body and the support face each other. A connecting body arranged so as to be in contact with both of the supports, an air-core coil provided on one side member of the movable body and the support, and one side in the first direction with respect to the coil. A second direction in which the movable body is provided with a first permanent magnet provided on the other side member of the movable body and the support so as to face each other, and the movable body intersects the support with respect to the first direction. The one-sided member includes a coil holder having a plate portion through which a coil arrangement hole in which the coil is arranged inside penetrates in the first direction, and a coil arrangement hole. A first plate that overlaps the plate portion from one side in the first direction, and an adhesive layer that is filled at least in the air core portion of the coil and fixes the coil to the first plate and the plate portion. The coil is opposed to the first permanent magnet via the first plate, and the one-side member is arranged so as to overlap the coil placement hole and the plate portion from the other side in the first direction. The coil is fixed to the second plate and the plate portion by the adhesive layer, and the other side member is attached to the coil via the second plate in the first direction. The first plate and the second plate are made of a non-magnetic material, and the first plate and the second plate are made of a metal plate . do.

In the present invention, the coil is arranged inside the coil arrangement hole penetrating the plate portion of the coil holder in the first direction, and the first plate is overlapped with the coil arrangement hole and the plate portion from one side in the first direction. Is placed. Therefore, when the air core portion of the coil is filled with the adhesive, the adhesive flows between the coil and the coil holder, between the coil and the first plate, and between the first plate and the coil holder. Therefore, when the adhesive is cured, the coil, the first plate, and the coil holder are fixed by the adhesive layer. Therefore, unlike the case where the adhesive is poured into the gap between the outer peripheral surface of the coil and the inner peripheral surface of the coil arrangement hole, the coil arranged in the coil arrangement hole of the coil holder can be appropriately adhered to the coil holder. Further, the first plate is interposed between the first permanent magnet and the coil. Therefore, even when the movable body moves to one side in the first direction, the first permanent magnet and the coil do not come into direct contact with each other, so that the coil is less likely to be damaged.

According to such an embodiment, when the second plate is overlapped after filling the air core portion of the coil with the adhesive, the adhesive is applied between the coil and the coil holder, between the coil and the first plate, and the first plate. It flows smoothly between the plate and the coil holder, and also flows between the coil and the second plate, and between the second plate and the coil holder. Therefore, when the adhesive is cured, the coil, the first plate, the second plate, and the coil holder are fixed by the adhesive layer. In this state, the second plate is interposed between the second permanent magnet and the coil. Therefore, even when the movable body moves to the other side in the first direction, the second permanent magnet and the coil do not come into direct contact with each other, so that the coil is less likely to be damaged.

According to such an embodiment, the magnetic flux from the first permanent magnet and the magnetic flux of the second permanent magnet are interlinking with the coil without being affected by the first plate and the second plate.

According to such an embodiment, the heat generated in the coil can be efficiently dissipated through the first plate and the second plate.

In the present invention, the first plate and the second plate can adopt an embodiment composed of a stainless steel plate. According to such an embodiment, the first plate and the second plate have sufficient strength even when the plate thickness is thin.

In the present invention, the coil holder has a first holding portion that engages with the first plate to hold the first plate and a second holding portion that engages with the second plate to hold the second plate. A mode having a portion and a portion can be adopted. According to this aspect, it is not necessary to support the first plate and the second plate with a jig until the adhesive is cured.

In the present invention, the connecting body is a viscoelastic member, in which the first plate and the movable body face each other in the first direction, and the second plate and the movable body are in the first direction. It is possible to adopt the embodiment provided in each of the facing locations. According to this aspect, since the connecting body is deformed in the direction intersecting the thickness direction (first direction) (shearing direction), the linear component (spring coefficient) is larger than the non-linear component (spring coefficient). Demonstrate its characteristics.
Therefore, since the reproducibility of the vibration acceleration with respect to the input signal can be improved, it is possible to realize the vibration with a delicate nuance.

In the present invention, the aspect in which the one-side member is the support and the other-side member is the movable body can be adopted. That is, it is possible to adopt an embodiment in which the coil is provided on the support and the magnet is provided on the movable body.

In the present invention, the coil is arranged inside the coil arrangement hole penetrating the plate portion of the coil holder in the first direction, and the first plate is overlapped with the coil arrangement hole and the plate portion from one side in the first direction. Is placed. Therefore, when the air core portion of the coil is filled with the adhesive, the adhesive flows between the coil and the coil holder, between the coil and the first plate, and between the first plate and the coil holder. Therefore, when the adhesive is cured, the coil, the first plate, and the coil holder are fixed by the adhesive layer. Therefore, unlike the case where the adhesive is poured into the gap between the outer peripheral surface of the coil and the inner peripheral surface of the coil arrangement hole, the coil arranged in the coil arrangement hole of the coil holder can be appropriately adhered to the coil holder. Further, since the first plate is interposed between the first permanent magnet and the coil, even if the movable body moves to one side in the first direction, the first permanent magnet and the coil do not come into direct contact with each other. Therefore, the coil is not easily damaged.

It is a perspective view of the actuator to which this invention is applied. It is a YZ sectional view of the actuator shown in FIG. It is an exploded perspective view of the actuator shown in FIG. It is an exploded perspective view which disassembled the actuator shown in FIG. 1 into a support body and a movable body. FIG. 3 is an exploded perspective view of the support shown in FIG. 4 as viewed from the other side in the first direction. FIG. 3 is an exploded perspective view of the support shown in FIG. 4 as viewed from one side in the first direction. It is explanatory drawing which shows the fixed structure of the feeding board in the actuator 1 shown in FIG. It is explanatory drawing of the slit which holds the feeding board shown in FIG. 7. It is explanatory drawing which shows the process of fixing a coil to a coil holder among the manufacturing process of the actuator shown in FIG. It is a top view which shows the process of fixing a coil to the coil holder shown in FIG. It is explanatory drawing which shows the process of fixing a power feeding board to the coil holder shown in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, X is attached to the linear motion direction (second direction, vibration direction) of the movable body 6, Z is attached to the first direction that intersects the second direction X, and the first direction Z and the second direction are attached. It will be described by adding Y to the third direction intersecting with X. It should be noted that X1 is attached to one side of the second direction X, X2 is attached to the other side of the second direction X, Z1 is attached to one side of the first direction Z, and Z2 is attached to the other side of the first direction Z. , Y1 is attached to one side of the third direction Y, and Y2 is attached to the other side of the third direction Y. Further, in the following description, the case where the one-side member holding the coil is the support 2 and the other-side member holding the permanent magnet is the movable body 6 will be mainly described.

(overall structure)
FIG. 1 is a perspective view of the actuator 1 to which the present invention is applied. FIG. 2 is a YZ cross-sectional view of the actuator 1 shown in FIG. FIG. 3 is an exploded perspective view of the actuator 1 shown in FIG. FIG. 4 is an exploded perspective view of the actuator 1 shown in FIG. 1 disassembled into a support 2 and a movable body 6. FIG. 5 is an exploded perspective view of the support 2 shown in FIG. 4 as viewed from the other side Z2 in the first direction Z. FIG. 6 is an exploded perspective view of the support 2 shown in FIG. 4 as viewed from one side Z1 of the first direction Z.

The actuator 1 shown in FIG. 1 has a rectangular parallelepiped shape with the longitudinal direction directed to the third direction Y, and notifies the user holding the actuator 1 of information by vibration in the second direction X. Therefore, the actuator 1 can be used as an operating member of a game machine or the like, and a new sensation can be felt by vibration or the like.

As shown in FIGS. 2, 3, and 4, the actuator 1 has a support 2 including a square case 3 and the like that define the outer shape of the actuator 1, and a second support 2 inside the case 3. It has a movable body 6 movably supported in the direction X, and outputs information by vibrating the movable body 6 in the second direction X.

In this embodiment, as will be described below with reference to FIGS. 2 to 6, the support 2 has a case 3, a coil holder 4, a coil 5, and a power feeding board 10, and the movable body 6 has a movable body 6. It has a permanent magnet (first permanent magnet 71 and second permanent magnet 72) and a yoke (first yoke 81 and second yoke 82). Further, the magnetic drive circuit 1a is composed of the coil 5 and the permanent magnets (first permanent magnet 71 and second permanent magnet 72). Further, the movable body 6 is supported by the support body 2 via the connecting bodies 91 and 92 provided between the movable body 6 and the support body 2. The connectors 91, 92 have at least one of elasticity and viscoelasticity.

(Structure of movable body 6)
As shown in FIGS. 2, 3 and 4, the movable body 6 has a first yoke 81 made of a magnetic plate arranged on one side Z1 of the first direction Z with respect to the coil 5, and a first yoke 81 on the coil 5. It has a flat plate-shaped first permanent magnet 71 held on the surface of the other side Z2 of the first direction Z of the first yoke 81 so as to face each other on one side Z1 of the direction Z. Further, the movable body 6 faces the coil 5 with the second yoke 82 made of a magnetic plate arranged on the other side Z2 of the first direction Z and the coil 5 on the other side Z2 of the first direction Z. It has a flat plate-shaped second permanent magnet 72 held on the surface of one side Z1 of the first direction Z of the second yoke 82. In this embodiment, the movable body 6 is composed of a first yoke 81, a first permanent magnet 71, a second yoke 82, and a second permanent magnet 72.

The first yoke 81 includes a flat plate portion 811 to which the first permanent magnet 71 is fixed, and a pair of connecting portions 812 bent from both ends of the flat plate portion 811 in the second direction X to the other side Z2 in the first direction Z. And have. The second yoke 82 has a flat plate portion 821 to which the second permanent magnet 72 is fixed, and one side X1 and the other side X2 of the second direction X are provided in the intermediate portion of the flat plate portion 821 in the third direction Y. It has a pair of overhanging portions 822 that overhang. In the present embodiment, 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.

The first permanent magnet 71 and the second permanent magnet 72 are magnetized at different poles on one side X1 in the first direction and the other side X2 in the first direction, respectively.

(Structure of support 2)
As shown in FIGS. 1, 2 and 3, in the support 2, the case 3 has a first case member 31 located on one side Z1 of the first direction Z and a second case Z2 on the other side Z2 of the first direction Z. It has a second case member 32 that overlaps with one case member 31, and a pair of side plate portions 311 provided on both sides of the second direction X of the first case member 31 has a second direction of the second case member 32. A pair of side plate portions 321 provided on both sides of the X are covered to form the case 3. At that time, the coil holder 4, the coil 5, and the movable body 6 shown in FIGS. 4 and 5 are accommodated between the first case member 31 and the second case member 32. In the present embodiment, the case 3 has openings at both ends in the third direction Y.

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, notches 311a, 321a, 311b, and 312b are formed at both ends of the third direction Y. .. Further, an engaging hole 321d is formed in the side plate portion 321 at a position separated in the third direction Y.

As shown in FIG. 5, the coil 5 is an air-core coil having an annular planar shape wound in an oval shape, and is held by the coil holder 4. The coil 5 has two long side portions 51 extending in parallel in the second direction X in the third direction Y and two arcuate short sides connecting both ends of the two long side portions 51 in the third direction Y. It is provided with a unit 52. With respect to the coil 5 configured in this way, the first permanent magnet 71 faces the long side portion 51 on one side Z1 of the first direction Z, and the second permanent magnet 72 on the other side Z2 of the first direction Z. Are facing each other.

As shown in FIGS. 4 and 5, the coil holder 4 has a plate portion 41 in which a coil arrangement hole 410 formed of an oval through hole in which the coil 5 is arranged is opened in the first direction Z. There is.

At the end portion 411 of one side Y1 of the third direction Y of the plate portion 41, a plurality of recesses 411b extending in the second direction X are formed on the surface of the other side Z2 of the first direction Z, and the second portion is formed. A recess (not shown) similar to the recess 411b is also formed on the surface of one side Z1 of the one direction Z.

At the end portion 411, the side plate portion 413 projects from the edge of one side Y1 of the third direction Y toward one side Z1 of the first direction Z, the edge of the one side X1 of the second direction X, and the second direction. Side plate portions 414 and 415 project from the edge of X2 on the other side of X toward one side Z1 of the first direction Z and the other side Z2. Of the inner surfaces 414s and 415s of the side plate portions 414 and 415, on one side Z1 of the first direction Z with respect to the plate portion 41, a first holding portion 414a formed of a groove-shaped recess extending in the first direction Z, 415a is formed. Further, of the inner surfaces 414s and 415s of the side plate portions 414 and 415, the other side Z2 in the first direction Z with respect to the plate portion 41 has a second holding portion formed of a groove-shaped recess extending in the first direction Z. 414b and 415b are formed.

At the end 412 of the other side Y2 of the plate portion 41 in the third direction Y, a plurality of recesses 412b extending in the second direction X are formed on the surface of the other side Z2 of the first direction Z, and the second portion is formed. A recess 412a similar to the recess 412b is also formed on the surface of one side Z1 of the one direction Z.

At the end 412, from the edge of the other side Y2 in the third direction Y, the edge of one side X1 of the second direction X, and the edge of the other side X2 of the second direction X, one side Z1 of the first direction Z, Side plate portions 417, 418, and 419 project toward the other side Z2. Of the inner surfaces 418s and 419s of the side plate portions 418 and 419, on one side Z1 of the first direction Z with respect to the plate portion 41, a first holding portion 418a formed of a groove-shaped recess extending in the first direction Z, 419a is formed. Further, of the inner surfaces 418s and 419s of the side plate portions 418 and 419, the other side Z2 in the first direction Z with respect to the plate portion 41 has a second holding portion formed of a groove-shaped recess extending in the first direction Z. 418b and 419b are formed.

Further, on the outer surface of the side plate portion 414, a pair of side plate portions 311 of the first case member 31 and a pair of side plate portions 321 of the second case member 32 are formed at the end of one side Y1 of the third direction Y. A convex portion 414e to which the cutouts 311a and 321a abut is formed is formed, and a convex portion 415e similar to the convex portion 414e is also formed on the outer surface of the side plate portion 415. Of the outer surface of the side plate portion 418, the end portion of the other side Y2 in the third direction Y is formed by 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. A convex portion 418e with which the notches 311b and 321b abut is formed, and a convex portion (not shown) similar to the convex portion 418e is formed on the outer surface of the side plate portion 419.

Further, on the outer surface of the side plate portion 414 and the outer surface of the side plate portion 418, engaging convex portions 414d and 418d with which the engaging holes 321d formed in each of the pair of side plate portions 321 of the second case member 32 are engaged are provided. It is formed. The outer surface of the side plate portion 415 and the outer surface of the side plate portion 419 are also formed with the same engaging convex portions (not shown) as the engaging convex portions 414d and 418d.

(Structure of 1st plate 47 and 2nd plate 48)
The support 2 configured in this way has a first plate 47 that overlaps the coil arrangement hole 410 and the plate portion 41 from one side Z1 of 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 the adhesive layer 9 made of the adhesive. Therefore, the coil 5 faces the first permanent magnet 71 via the first plate 47 in the first direction Z. Further, the first plate 47 is fixed to the plate portion 41 by the adhesive layer 9. At that time, the recesses 412a and the like formed in the plate portion 41 are the pooled portions of the adhesive layer 9.

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 of 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 the adhesive layer 9 made of the same. Therefore, the coil 5 faces the second permanent 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 the adhesive layer 9. At that time, the recesses 411b, 412b and the like formed in the plate portion 41 are pooled portions of the adhesive layer 9.

In this embodiment, the first plate 47 and the second plate 48 are made of a non-magnetic material. In this 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, the first plate 47 has a claw-shaped convex portion 472 that projects diagonally from both sides of the second direction X to one side Z1 of the first direction Z, and the convex portion 472 is a side plate portion 414. It elastically contacts the inside of the first holding portions 414a, 415a, 418a, and 419a formed of groove-shaped recesses formed in 415, 418, and 419, and is held by the coil holder 4. Further, the second plate 48 has a claw-shaped convex portion 482 that projects diagonally from both sides of the second direction X to the other side Z2 of the first direction Z, and the convex portion 482 has side plate portions 414 and 415. It elastically contacts the inside of the second holding portion 414b, 415b, 418b, 419b formed of the groove-shaped concave portions formed in 418 and 419, and is held by the coil holder 4. The first plate 47 has a bent portion 473 bent to one side Z1 of the first direction Z at both ends of the third direction Y and a bent portion 474 bent to the other side Z2 of the first direction Z at both ends of the second direction X. And have. The second plate 48 has a bent portion 483 bent toward the other side Z2 of the first direction Z at both ends of the third direction Y, and a bent portion 484 bent toward one side Z1 of the first direction Z at both ends of the second direction X. And have. Therefore, the bending portions 473, 474, 483, and 484 of the first plate 47 and the second plate 48 increase the strength against bending.

As described above, 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 are arranged. The first plate 47 is arranged so as to overlap with one side Z1 of the first direction Z. Therefore, when the air core portion 50 of the coil 5 is filled with an 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 and 4. Therefore, when the adhesive is cured, the coil 5, the first plate 47, and the coil holder 4 are fixed by the adhesive layer 9. Therefore, unlike the case where the adhesive is poured into the gap between the outer peripheral surface of the coil 5 and the inner peripheral surface of the coil arrangement hole 410, the coil 5 arranged in the coil arrangement hole 410 of the coil holder 4 is properly aligned with the coil holder 4. Can be glued. Further, the first plate 47 is interposed between the first permanent magnet 71 and the coil 5. Therefore, even when the movable body 6 moves to one side Z1 of the first direction Z, the first permanent magnet 71 and the coil 5 do not come into direct contact with each other, so that the coil 5 is less likely to be damaged.

Further, when the second plate 48 is overlapped after filling the air core portion 50 of the coil 5 with an adhesive, the adhesive is applied between the coil 5 and the coil holder 4, and between the coil 5 and the first plate 47. It smoothly flows 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 layer 9. In this state, the second plate 48 is interposed between the second permanent magnet 72 and the coil 5. Therefore, even when the movable body 6 moves to the other side Z2 in the first direction Z, the second permanent magnet 72 and the coil 5 do not come into direct contact with each other, so that the coil 5 is less likely to be damaged.

Further, since the first plate 47 and the second plate 48 are made of a non-magnetic material, the magnetic flux from the first permanent magnet 71 and the magnetic flux of the second permanent magnet 72 are affected by the first plate 47 and the second plate 48. It will be chained with the coil 5 without receiving. Further, 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 dissipated through the first plate 47 and the second plate 48. Further, since the first plate 47 and the second plate 48 are made of stainless steel plates, the first plate 47 and the second plate 48 have sufficient strength even when the plate thickness is thin.

Further, the coil holder 4 has a first holding portion 414a, 415a, 418a, 419a that engages with the claw-shaped convex portion 472 of the first plate 47 to hold the first plate 47, and a claw-shaped portion of the second plate 48. It has a second holding portion 414b, 415b, 418b, 419b that engages with the convex portion 482 and holds the second plate 48. Therefore, it is not necessary to support the first plate 47 and the second plate 48 with a jig until the adhesive 90 is cured.

(Structure of connecting bodies 91 and 92)
As shown in FIGS. 2, 3, 4 and 5, the movable body 6 is provided in the second direction X and the third direction Y by the connecting bodies 91 and 92 provided between the movable body 6 and the support body 2. It is supported to be movable.

In the present embodiment, the connecting body 91 is provided at a portion where the first yoke 81 and the first plate 47 face each other in the first direction Z. The connecting body 92 is provided at a portion where the second yoke 82 and the second plate 48 face each other in the first direction Z. More specifically, in the connecting body 91, the first yoke 81 and the first plate 47 face each other in the first direction Z at each of the two positions (the short side portion 52 side of the coil 5) separated in the third direction Y. It is provided in the part to be used. The connecting body 92 is provided at a portion where the second yoke 82 and the second plate 48 face each other in the first direction Z at each of the two positions (the short side portion 52 side of the coil 5) separated in the third direction Y. There is. Therefore, the movable body 6 can be movably supported in the second direction X without using a plate-shaped spring or the like.

In this embodiment, the connecting bodies 91 and 92 are viscoelastic members. More specifically, the connecting bodies 91 and 92 (viscoelastic members) are gel-like members made of silicone gel or the like. In this embodiment, the connecting bodies 91 and 92 are made of a silicone gel having a needle insertion degree of 90 degrees to 110 degrees. Needle penetration is the depth at which a 1/4 cone needle with a total load of 9.38 g at 25 ° C can enter for 5 seconds, as defined by JIS-K-2207 and JIS-K-2220. Is a value expressed in 1/10 mm units, and the smaller this value is, the harder it is. The adhesive, the adhesive, or the adhesiveness of the silicone gel is used to fix the connecting bodies 91 and 92 to the first yoke 81 and the second yoke 82, and to fix the connecting bodies 91 and 92 to the coil holder 4. It is done.

As described above, in the actuator 1 of the present embodiment, since the connecting bodies 91 and 92 are provided between the movable body 6 and the support body 2, it is possible to suppress the resonation of the movable body 6. Here, the connecting body 91 is provided between the first plate 47 and the first yoke 81, and the connecting body 92 is provided between the second plate 48 and the second yoke 82. Therefore, the case 3 is not used to provide the connectors 91 and 92. Therefore, the connecting bodies 91 and 92 can be provided between the support body 2 and the movable body 6 without using the case 3. Therefore, since the connecting bodies 91 and 92 can be provided at the stage of assembling without providing the case 3, the vibration characteristics including the damper characteristics can be measured during the manufacturing. Further, since the case 3 is not used to provide the connecting bodies 91 and 92, the connecting bodies 91 and 92 can be provided to the actuator that does not have the case 3.

Further, since the connecting bodies 91 and 92 are provided at positions where the support body 2 and the movable body 6 face each other in the first direction Z intersecting the second direction X (vibration direction), the movable body 6 is provided. When it 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 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 connecting bodies (connecting bodies 91 and 92) are viscoelastic members (plate-shaped gel-like members) and have linear or non-linear stretching characteristics depending on the stretching direction thereof. For example, the connectors 91 and 92 have expansion and contraction characteristics in which a non-linear component is larger than a linear component (spring coefficient) when pressed in the thickness direction (axial direction) to compress and deform, while the connection bodies 91 and 92 have a stretch characteristic. When it is pulled and stretched in the (axial direction), it has a stretch characteristic in which the linear component (spring coefficient) is larger than the non-linear component (spring coefficient). Further, when the connecting bodies 91 and 92 are deformed in the direction intersecting the thickness direction (axial direction) (shearing direction), they are deformed in the direction of being pulled and stretched regardless of which direction they move, so that they are non-linear. 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 be deformed in the shearing direction. Therefore, in the connecting bodies 91 and 92, when the movable body 6 vibrates in the second direction X, the spring force depending on the moving direction becomes constant. Therefore, by using the spring element in the shear direction of the connecting bodies 91 and 92, the reproducibility of the vibration acceleration with respect to the input signal can be improved, and the vibration can be realized with a delicate nuance.

Further, both sides of the connecting bodies 91 and 92 in the first direction Z are connected to the movable body 6 and the support 2 by a method such as adhesion. Therefore, since the connecting bodies 91 and 92 surely follow the movement of the movable body 6, the resonance of the movable body 6 can be effectively prevented.

Further, the connecting bodies 91 and 92 are in a state of being compressed in the first direction Z between the support body 2 and the movable body 6. Therefore, since the connecting bodies 91 and 92 surely follow the movement of the movable body 6, the resonance of the movable body 6 can be effectively prevented.

(Structure of per capita part)
In this embodiment, a perforated portion that defines a movable range when the movable body 6 moves in the second direction X and the third direction Y due to an impact from the outside is provided. More specifically, in the movable body 6, the flat plate portions 811 and 821 of the first yoke 81 and the second yoke 82 have the inner surfaces 414s, 415s, 418s, 419s of the side plate portions 414, 415, 418, and 419 in the second direction. Opposing at X. When the movable body 6 moves in the second direction X due to an external impact, the inner surfaces 414s, 415s, 418s, and 419s of the side plate portions 414, 415, 418, and 419 come into contact with the movable body 6 and come into contact with the movable body 6 in the second direction X. It is the first hit part that defines the movable range of.

Further, in the movable body 6, the pair of connecting portions 812 of the first yoke 81 and the pair of overhanging portions 822 of the second yoke 82 are separated from each other in the coil holder 4 in the third direction Y by the side plate portions 414 and the side plate portions 418, respectively. It is located between the side plate portions 415 and the side plate portions 419 that are separated from each other in the third direction Y. Therefore, the end portions 414g and 418g that face each other in the side plate portion 414 and the side plate portion 418, and the end portions 415g and 419g that face each other in the side plate portion 415 and the side plate portion 419 have the movable body 6 due to an external impact. When it moves in the third direction Y, it comes into contact with the movable body 6 and becomes a second hit portion that defines the movable range of the third direction Y.

(Structure of power supply board 10)
FIG. 7 is an explanatory diagram showing a fixed structure of the power feeding board 10 in the actuator 1 shown in FIG. FIG. 8 is an explanatory diagram of slits 414t and 415t for holding the power feeding substrate 10.

As shown in FIGS. 1 and 3, in the actuator 1, in the coil holder 4, the above-mentioned soldering portions (inner surfaces 414s, 415s, 418s, 419s of the side plate portions 414, 415, 418, 419, and end portions 414g, 415g) are used. The feeding board 10 is held at a position separated from 418g and 419g), and the coil wires 56 and 57 constituting the coil 5 are connected to the feeding board 10 by soldering or the like. In this embodiment, the feeding board 10 is a rigid board.

In this embodiment, the power feeding board 10 is held in the opening of the coil holder 4 surrounded by the side plate portions 413, 414, and 415 on one side of the third direction Y. In the present embodiment, the coil wires 56 and 57 pass through the two guide grooves 411c formed on the surface of the other side Z2 of the first direction Z of the end portion 411 of the plate portion 41 of the coil holder 4 from the coil 5 to the first. After being pulled out to one side Y1 of the three directions Y, it extends from one side Z1 of the first direction Z toward the other side Z2 and is connected to the power feeding board 10.

In the present embodiment, the coil holder 4 is formed with a pair of slits 414t and 415t extending to one side Z1 of the first direction Z at the end portions 414h and 415h of the side plate portions 414 and 415 facing each other in the second direction X. The ends 10a and 10b on both sides of the second direction X of the power feeding board 10 are fitted inside the slits 414t and 415t, respectively. Therefore, the power feeding board 10 is held by the coil holder 4 along the side plate portions 413, 414, and 415 of the coil holder 4 at a position exposed from the case 3. In this embodiment, after the ends 10a and 10b of the feeding board 10 are fitted into the slits 414t and 415t, the coil holder 4 and the feeding board 10 are further fixed with an adhesive to suppress the vibration of the feeding board 10. ing.

In the present embodiment, the power feeding board 10 has a first plate portion 11 formed at a position where two lands 16a and 16b to which the coil wires 56 and 57 are connected by solder are separated from each other in the second direction X, and a first plate portion. It includes two second plate portions 12, 13 protruding from both ends of the second direction X of 11 to one side Z1 of the first direction Z. Further, two lands 17a and 17b are formed on both sides of the lands 16a and 16b on the first plate portion 11, and wiring members (not shown) from the outside are connected to the lands 17a and 17b.

Further, at the end portion 411 of the coil holder 4, at a position passing through the end portion of one side Y1 of the third direction Y of the guide groove 411c, one side Z1 of the first direction Z of the first plate portion 11 of the feeding board 10 A contact portion 411r for receiving the edge is formed, and both end portions 10a and 10b of the power supply board 10 are slit 414t and 415t to a depth position where the first plate portion 11 of the power supply board 10 abuts on the contact portion 411r. It fits. At the end of the other side Z2 of the first plate portion 11 in the first direction Z, two recesses 11a, which hold the tip end side of the coil wires 56, 57 when the coil wires 56, 57 are connected to the feeding board 10, 11b is formed.

Here, the width of the slits 414t and 415t is narrowed from the middle of the depth direction (first direction Z). Therefore, when the both end portions 10a and 10b are inserted into the slits 414t and 415t, the power feeding board 10 is held in the slits 414t and 415t even at an intermediate position until the first plate portion 11 abuts on the abutting portion 411r. The state is maintained.

Here, the coil wires 56 and 57 are provided with an appropriate amount of slack between the coil 5 and the lands 16a and 16b (connection positions) of the feeding board 10. However, if the power feeding board 10 is moved to a depth position separated from the contact portion 411r to the other side Z2 in the first direction Z with the feeding board 10 fitted in the slits 414t and 415t, the coil wires 56 and 57 are in a tense state. ..

As described above, in the present embodiment, since the feeding board 10 is held by the coil holder 4 covered with the case 3, it is difficult for the impact at the time of dropping to propagate to the feeding board 10 through the case 3. Further, even when the impact at the time of dropping propagates to the coil holder 4, the feeding board 10 moves together with the coil holder 4, so that the situation where the coil wires 56 and 57 are pulled is unlikely to occur. Therefore, it is unlikely that the coil wires 56 and 57 will be disconnected due to the impact at the time of dropping, so that the drop impact resistance performance can be improved.

Further, the power feeding board 10 is provided along the side surface of the coil holder 4. Therefore, it is unlikely that the impact at the time of dropping is directly applied to the power feeding board 10, so that the situation where the coil wires 56 and 57 are disconnected due to the impact at the time of dropping is unlikely to occur.

Further, in the coil holder 4, the power feeding board 10 has a contact portion with respect to the movable body 6 (side plate portions 414, 415, 418, 419 inner surfaces 414s, 415s, 418s, 419s (first degree contact portion), and a side plate portion 414. The movable body 6 is provided at a position away from the end portions 414g, 415g, 418g, and 419g (second degree contact portion) of the 415, 418, and 419. Therefore, the movable body 6 moves due to the impact at the time of dropping, and the coil holder 4 Even if the movable body 6 hits the perforated portion, the impact at that time is unlikely to propagate to the power feeding board 10. Therefore, it is unlikely that the coil wires 56 and 57 are disconnected due to the impact at the time of dropping.

Further, the side surface of the coil holder 4 to which the power feeding board 10 is fixed is located on one side Y1 of the third direction Y. Here, the short side portion 52 (invalid side) of the coil 5 is located in the third direction Y. Further, in the coil 5, the coil wires 56 and 57 are drawn out from the short side portion 52 of the coil 5. Therefore, if the feeding board 10 is arranged on the side surface of the coil holder 4 located on one side Y1 of the third direction Y, the distance extending from the coil 5 to the feeding board 10 may be short.

Further, the coil wires 56 and 57 extend from one side Z1 of the first direction Z to the other side Z2 and are connected to the power feeding board 10, and both ends 10a and 10b of the power feeding board 10 are connected to the coil holder 4. It is fitted from the other side Z2 of the first direction Z inside a pair of slits 414t and 415t extending toward one side Z1 of the first direction Z at opposite positions. Here, the power feeding board 10 is fitted in the slits 414t and 415t from the other side Z2 of the first direction Z to the depth of contact with the contact portion 411r provided in the coil holder 4, and is fitted in the slit 414t and 415t, and is the most one side Z1 of the first direction Z. Located in. Therefore, an appropriate amount of slack can be easily provided in the coil wires 56 and 57 extending from one side Z1 of the first direction Z to the other side Z2. Therefore, when a temperature change occurs, even if the coil wires 56, 57 are pulled due to the difference in the coefficient of thermal expansion between the coil wires 56, 57 and the peripheral members, the coil wires 56 , 57 is hard to break. Therefore, the operating temperature range of the actuator 1 can be expanded.

(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 board 10, the actuator 1 is movable by the magnetic drive circuit 1a provided with the coil 5, the first permanent magnet 71 and the second permanent magnet 72. The body 6 reciprocates in the second direction X. Therefore, the user holding the actuator 1 in his / her hand can obtain information by the vibration 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 inverted, and at that time, a difference in voltage is provided between the period when the polarity of the drive signal is negative and the period when the polarity is positive. As a result, there is a difference between the acceleration when the movable body 6 moves to one side X1 of the second direction X and the acceleration when the movable body 6 moves to the other side X2 of the second direction X. Therefore, the user can feel the illusion that the actuator 1 moves to one side X1 or the other side X2 of the second direction X.

(Manufacturing method of actuator 1)
FIG. 9 is an explanatory diagram showing a step of fixing the coil 5 to the coil holder 4 in the manufacturing process of the actuator 1 shown in FIG. FIG. 10 is a plan view showing a step of fixing the coil 5 to the coil holder 4 shown in FIG. FIG. 11 is an explanatory diagram showing a process of fixing the power feeding board 10 to the coil holder 4 shown in FIG.

When manufacturing the actuator 1, first, as shown in FIGS. 9 and 10, a first plate 47 is arranged so as to overlap the coil arrangement hole 410 and the plate portion 41 of the coil holder 4 from one side Z1 of the first direction Z. do. At that time, the convex portion 472 is inserted into and engaged with the first holding portions 414a, 415a, 418a, and 419a of the side plate portions 414, 415, 418, and 419. As a result, the first plate 47 is held by the coil holder 4 in a state where the coil arrangement hole 410 is closed from one side Z1 of the first direction Z. Next, as shown in FIGS. 9 and 10, the coil 5 is arranged in the coil arrangement hole 410.

In this state, as shown in FIG. 7, the feeding board 10 is fixed to the coil 5. In this embodiment, as shown in FIG. 11A, the end portions 10a and 10b of the feeding board 10 are fitted into the slits 414t and 415t of the coil holder 4 from the other side Z2 of the first direction Z. At that time, the insertion of the power feeding board 10 is stopped at an intermediate position until the power feeding board 10 comes into contact with the contact portion 411r of the coil holder 4 from the other side Z2 of the first direction Z. Therefore, the power feeding board 10 is in a floating state from the contact portion 411r.

In this state, the coil wires 56 and 57 are routed from one side Z1 of the first direction Z to the other side Z2 and connected to the lands 16a and 16b of the power feeding board 10 by soldering. At that time, the coil wires 56 and 57 are passed through the recesses 11a and 11b to position the coil wires 56 and 57. After connecting the coil wires 56 and 57 to the power feeding board 10, the excess portion on the tip side of the coil wires 56 and 57 is cut and removed.

After that, the power feeding board 10 is pushed into the slits 414t and 415t to the depth of contact with the contact portion 411r from the other side Z2 of the first direction Z. As a result, the coil wires 56 and 57 are provided with an appropriate amount of slack between the coil 5 and the lands 16a and 16b (connection positions) of the feeding board 10. In this embodiment, the power feeding board 10 is pushed into the slits 414t and 415t to the depth of contact with the contact portion 411r from the other side Z2 of the first direction Z, and then the feeding board 10 is fixed to the coil holder 4 with the adhesive 90. ..

Here, since the width of the slits 414t and 415t is narrowed from the middle in the depth direction, when the feeding board 10 is inserted to the position where the width is narrowing in the slits 414t and 415t, the feeding board 10 becomes the slit 414t. Temporarily fixed to 415t. Therefore, if the coil wires 56 and 57 are connected to the temporarily fixed power supply board 10 and then the power supply board 10 is pushed deeper into the slits 414t and 415t, the coil wires 56 and 57 can be loosened. Further, the slack attached to the coil wires 56 and 57 can be optimized only by optimizing the position of the power feeding board 10 when connecting the coil wires 56 and 57.

Next, as shown in FIGS. 9 and 10, after the air core portion 50 of the coil 5 is filled with an adhesive, the coil arrangement hole 410 and the plate portion 41 of the coil holder 4 are filled with the coil arrangement hole 410 and the plate portion 41 from the other side Z2 of the first direction Z. The second plate 48 is arranged so as to overlap each other. At that time, the convex portion 482 is inserted into and engaged with the second holding portions 414b, 415b, 418b, and 419b of the side plate portions 414, 415, 418, and 419. As a result, the second plate 48 is held by the coil holder 4 in a state of being overlapped with the coil 5 from the other side Z2 of the first direction Z. Further, the adhesive 90 travels between the coil 5 and the first plate 47 on one side Z1 of the first direction Z with respect to the coil 5, and is formed between the first plate 47 and the plate portion 41 of the coil holder 4. It flows into the gap. At that time, the excess adhesive 90 flows into the recesses 412a and the like formed on the surface of one side Z1 of the first direction Z of the end portions 411 and 412 of the plate portion 41. On the other hand, the adhesive 90 travels between the coil 5 and the second plate 48 on the other side Z2 of the first direction Z with respect to the coil 5, and is formed between the second plate 48 and the plate portion 41 of the coil holder 4. It flows into the gap. At that time, the excess adhesive 90 flows into the recesses 411b, 412b and the like formed on the surface of the other side Z2 of the first direction Z of the end portions 411 and 412 of the plate portion 41.

Therefore, when the adhesive 90 is cured, the coil 5 is fixed to the first plate 47 and the plate portion 41 of the coil holder 4 by the adhesive layer 9 in which the adhesive 90 is cured. Further, the first plate 47 is fixed to the plate portion 41 of the coil holder 4 by the adhesive layer 9. Further, the coil 5 is fixed to the first plate 47 by the adhesive layer 9, and the second plate 48 is fixed to the plate portion 41 of the coil holder 4 by the adhesive layer 9.

Next, the connecting body 91 is adhered to two positions separated by the third direction Y on the surface of the one side Z1 of the first direction Z of the first plate 47, while the other side Z2 of the first direction Z of the second plate 48 is adhered. The connecting body 92 is adhered to two places separated in the third direction Y on the surface of the above surface.
Next, the first yoke 81 to which the first permanent magnet 71 is fixed is arranged on one side Z1 of the first direction Z with respect to the first plate 47, while the first direction Z with respect to the second plate 48. A second yoke 82 to which the second permanent magnet 72 is fixed is arranged on the other side Z2, and the tip end portion of the connecting portion 812 of the first yoke 81 is connected to the overhanging portion 822 of the second yoke 82 by a method such as welding. .. At that time, the connecting body 91 is adhered to the first yoke 81, and the connecting body 92 is adhered to the second yoke 82.

Next, after stacking the first case member 31 so as to cover the coil holder 4 and the movable body 6 from one side Z1 of the first direction Z, the coil holder 4 and the movable body 6 are placed from the other side Z2 of the first direction Z. The second case member 32 is overlapped so as to cover the second case member 32, and the engaging hole 321d formed in the side plate portion 321 of the second case member 32 is engaged with the engaging convex portions 414d and 418d of the coil holder 4. After that, the first case member 31 and the second case member 32 are joined by welding or the like to form the case 3.

(Other embodiments)
In the above embodiment, permanent magnets (first permanent magnet 71 and second permanent magnet 72) are provided on both sides of the first direction Z with respect to the coil 5, but permanent magnets are provided only on one of the first directions Z with respect to the coil 5. The present invention may be applied to the provided actuator.

In the above embodiment, the coil holder 4 and the coil 5 are provided on the support 2, and the permanent magnets (first permanent magnet 71 and second permanent magnet 72) and the yoke (first yoke 81 and second yoke 82) are movable bodies. It was provided in 6. However, regarding the configuration using the first plate 47 and the second plate 48 and the configuration for providing slack in the feeding board 10, the coil holder 4 and the coil 5 are provided in the movable body 6 and a permanent magnet (first permanent magnet) is provided. 71 and the second permanent magnet 72) and the yoke (the first yoke 81 and the second yoke 82) may be applied to the actuator provided in the support 2.

In the above embodiment, the gel-like member (viscoelastic member) is used as the connecting bodies 91 and 92, but rubber, a spring, or the like may be used. Here, viscoelasticity is a property that combines both viscosity and elasticity, and is a property that is prominently found in polymer substances such as gel-like members, plastics, and rubber. Therefore, as the connectors 91 and 92 having viscous elasticity, natural rubber, diene rubber (for example, styrene / butadiene rubber, isoprene rubber, butadiene rubber), chloroprene rubber, acrylonitrile / butadiene rubber, etc.), non-diene rubber (for example). For example, various rubber materials such as butyl rubber, ethylene / propylene rubber, ethylene / propylene / diene rubber, urethane rubber, silicone rubber, fluororubber, etc., and various rubber materials thereof and modified materials thereof may be used.

1 ... Actuator, 1a ... Magnetic drive circuit, 2 ... Support, 3 ... Case, 4 ... Coil holder, 5 ... Coil, 6 ... Movable body, 9 ... Adhesive layer, 10 ... Feeding board, 10a, 10b ... Ends , 11 ... 1st plate part, 12, 13 ... 2nd plate part, 16a, 16b, 17a, 17b ... land, 31 ... 1st case member, 32 ... 2nd case member, 41 ... plate part, 47 ... 1st Plate, 48 ... 2nd plate, 50 ... Air core part, 51 ... Long side part, 52 ... Short side part, 56, 57 ... Coil wire, 71 ... 1st permanent magnet, 72 ... 2nd permanent magnet, 81 ... No. 1 yoke, 82 ... 2nd yoke, 90 ... adhesive, 91, 92 ... connector, 311, 321, 413, 414, 415, 417, 418 ... side plate, 410 ... coil placement hole, 411c ... guide groove 411r ... Contact part, 414a, 415a, 418a, 419a ... First holding part, 414b, 415b, 418b, 419b ... Second holding part, 414t, 415t ... Slit, 811, 821 ... Flat plate part, 812 ... Connecting part , 822 ... Overhang, X ... 2nd direction, Y ... 3rd direction, Z ... 1st direction

Claims (5)

Movable body and
With the support,
A connector having at least one of elasticity and viscoelasticity and arranged so as to be in contact with both the movable body and the support at a position where the movable body and the support face each other.
An air-core coil provided on one side member of the movable body and the support, and the other of the movable body and the support so as to face the coil on one side in the first direction. A magnetic drive circuit provided with a first permanent magnet provided on a side member and vibrating the movable body in a second direction intersecting the first direction with respect to the support.
Have,
The one-side member includes a coil holder having a plate portion through which a coil arrangement hole in which the coil is arranged inside penetrates in the first direction, and one side of the coil arrangement hole and the plate portion in the first direction. It has a first plate that overlaps with the first plate and an adhesive layer that is filled at least in the air core portion of the coil and fixes the coil to the first plate and the plate portion.
The coil faces the first permanent magnet via the first plate and is opposed to the first permanent magnet.
The one-side member has a second plate arranged so as to overlap the coil arrangement hole and the plate portion from the other side in the first direction.
The coil is fixed to the second plate and the plate portion by the adhesive layer.
The other side member has a second permanent magnet facing the coil on the other side in the first direction via the second plate.
The first plate and the second plate are made of a non-magnetic material and are made of a non-magnetic material.
An actuator characterized in that the first plate and the second plate are made of a metal plate . The actuator according to claim 1 , wherein the first plate and the second plate are made of a stainless steel plate. The coil holder has a first holding portion that engages with the first plate and holds the first plate, and a second holding portion that engages with the second plate and holds the second plate. The actuator according to claim 1 or 2 , wherein the actuator has. The connecting body is a viscoelastic member, where the first plate and the movable body face each other in the first direction, and the second plate and the movable body face each other in the first direction. The actuator according to any one of claims 1 to 3 , wherein the actuator is provided in each of the above. The one-side member is the support.
The actuator according to any one of claims 1 to 4 , wherein the other side member is the movable body.

Images