Actuator

Abstract

To provide a structure which can change the weight of a movable body after assembly without disassembling an actuator.SOLUTION: An actuator 1 includes: a movable body 3; and a support 2 including a case 20 for accommodating the movable body 3. The movable body 3 includes: a first attachment part T1 provided at an end at one side L1 in an axial direction which is a vibration direction of the movable body 3 relative to the support 2; and a second attachment part T2 provided at an end at the other side L2 in the axial direction. The case 20 is provided with: a first opening M1 which is open on an end surface at the one side L1 in the axial direction; and a second opening M2 which is open on an end surface at the other side L2 in the axial direction. The first attachment part T1 is located at the inner side of the first opening M1 when viewed from the one side L1 in the axial direction. The second attachment part T2 is located at the inner side of the second opening M2 when viewed from the other side L2 in the axial direction. A first weight member G1 may be attached to the first attachment part T1, and a second weight member G2 may be attached to the second attachment part T2.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to an actuator.

Background Art

[0002] Patent Document 1 describes an actuator including a connecting body connected to a movable body and a support body, and a magnetic drive mechanism that relatively moves the movable body with respect to the support body. The support body includes a cylindrical case, a lid member that closes both ends of the case, and a coil holder disposed inside the case. The movable body includes a support shaft disposed at the center in the radial direction of the case, and a yoke and a magnet fixed to the support shaft. The connecting body includes an annular gel-like member disposed at a position surrounding both ends of the support shaft. The gel-like member connects an outer frame member fixed to the case and an inner frame member fixed to an end of the support shaft. Thereby, the movable body is supported so as to be movable in the axial direction inside the case.

[0003] In the actuator of Patent Document 1, the movable body includes a magnet and a yoke fixed to a support shaft. The yoke includes a first yoke that abuts against the magnet from one side in the axial direction and a second yoke that abuts against the magnet from the other side in the axial direction. The second yoke is configured by laminating two sheets of a first magnetic member and a second magnetic member. The second magnetic member functions as a weight adjusting member for adjusting the weight of the movable body. The second magnetic member is provided with a hole for weight adjustment (weight adjustment portion).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the actuator of Patent Document 1, although the movable body includes a weight adjustment member, the weight adjustment member is housed inside the support. Therefore, the specifications of the weight adjustment member must be determined before assembling the actuator, and the weight of the movable body cannot be changed later after assembly. If the weight cannot be changed, the resonance frequency of the vibration of the movable body cannot be changed later, and the intensity of the vibration cannot be changed later. Therefore, the tactile sensation obtained from the actuator cannot be changed later without disassembling the actuator.

[0006] In view of the above problems, an object of the present invention is to propose a configuration in which the weight of a movable body can be changed later without disassembling the actuator.

Means for Solving the Problems

[0007] In order to solve the above problems, the actuator according to the present invention includes a movable body, a support that houses the movable body, a connecting body that connects the movable body and the support, and a magnetic drive mechanism that relatively moves the movable body with respect to the support. The movable body includes a first attachment portion provided at one end of the movable body in the vibration direction with respect to the support, and a second attachment portion provided at the other end of the vibration direction. The case is provided with a first opening that opens to one side in the vibration direction and a second opening that opens to the other side in the vibration direction. The first attachment portion is located inside the first opening when viewed from one side in the vibration direction. The second attachment portion is characterized in that it is located inside the second opening when viewed from the other side in the vibration direction.

Brief Description of the Drawings

[0008]

Figure 1

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DETAILED DESCRIPTION OF THE INVENTION

[0009] (Configuration Common to Each Embodiment) The actuators of each of the embodiments described below include a support, a movable body, a magnetic drive mechanism that relatively moves the movable body with respect to the support, and a connecting body that connects the support and the movable body. The movable body can have an additional weight member attached from the outside without disassembling the support. The weight of the movable body of each embodiment varies depending on whether or not an additional weight member is attached. Therefore, the actuators can be used in a plurality of modes with different weights of the movable body.

[0010] The magnetic drive mechanism has a magnet and a coil. The magnetic drive mechanism is either a mode in which the coil is provided on the support side and the magnet is provided on the movable body side, or a mode in which the magnet is provided on the support side and the coil is provided on the movable body side. Each of the embodiments described below is a mode in which the coil is provided on the support side and the magnet is provided on the movable body side.

[0011] The connecting body has at least one of elasticity and viscoelasticity. In each of the embodiments described below, the connecting body is a gel-like member formed of a gel material and is a viscoelastic body. For example, the connecting body is a silicone gel having a penetration of 10 degrees to 110 degrees.

[0012] (Embodiment 1) FIG. 1 is a perspective view of the actuator 1 of Embodiment 1. FIG. 2 is an exploded perspective view of the actuator 1 of Embodiment 1. FIG. 3 is a cross-sectional view of the actuator 1 of Embodiment 1 cut along the A-A position in FIG. 1. The actuator 1 includes a support 2 and a movable body 3, a magnetic drive mechanism 6 that relatively moves the movable body 3 with respect to the support 2, and a connecting body that connects the support 2 and the movable body 3. The magnetic drive mechanism 6 has a magnet 61 and a coil 62. The support 2 has a cylindrical shape. The movable body 3 includes a support shaft 30 disposed at the center in the radial direction of the support 2. In the following description, the direction along the central axis L of the support shaft 30 is defined as the axial direction, one side in the axial direction is defined as L1, and the other side in the axial direction is defined as L2. In Embodiment 1, the movable body 3 vibrates in the axial direction with respect to the support 2.

[0013] (Support) The support body 2 includes a cylindrical case 20 that houses the movable body 3. The case 20 has a cylindrical case main body 24, a first lid member 21 that closes one end L1 in the axial direction of the case main body 24 and a second lid member 22 that closes the other end L2 in the axial direction of the case main body 24, and a coil holder 4 disposed inside the case main body 24.

[0014] As shown in FIG. 2, the coil holder 4 includes an annular first outer frame member fixing portion 41 and a body portion 42 that projects from the first outer frame member fixing portion 41 toward the other side L2 in the axial direction. By press-fitting the first outer frame member fixing portion 41 into the case main body 24, the coil holder 4 is fixed to the case main body 24. Inside the first outer frame member fixing portion 41, a first outer frame member 51 is press-fitted. The case main body 24 includes a second outer frame member fixing portion 25 that projects inward on the inner peripheral side at a position on the other side L2 in the axial direction with respect to the coil holder 4. Inside the second outer frame member fixing portion 25, a second outer frame member 52 is press-fitted.

[0015] The coil 62 of the magnetic drive mechanism 6 is disposed around the body portion 42 of the coil holder 4. The coil 62 is connected to two terminal pins 64 that project radially outward from the first outer frame member fixing portion 41. As shown in FIG. 1, the terminal pins 64 are connected to a wiring board 7 fixed to the board fixing portion 69 of the case main body 24.

[0016] As shown in FIG. 2, the first lid member 21 and the second lid member 22 each include a circular lid portion 26 when viewed from the axial direction and a plurality of locking portions 27 provided on the outer peripheral edge of the lid portion 26. The locking portion 27 is elastically deformed in the radial direction and is pushed into the inner peripheral side of the case main body 24 together with the lid portion 26. The locking portion 27 is locked to a regulating portion 28 that projects inward from the edge of the case main body 24.

[0017] The first lid member 21 is provided with a circular first opening M1. The second lid member 22 is provided with a circular second opening M2. The first opening M1 and the second opening M2 penetrate through the center in the radial direction of the lid portion 26 in the axial direction. The first opening M1 opens to the end face on one side L1 in the axial direction of the case 20, and the second opening M2 opens to the end face on the other side L2 in the axial direction of the case 20.

[0018] (Movable body) The movable body 3 includes a support shaft 30 extending in the axial direction, a magnet 61 and a yoke 35 fixed to the support shaft 30, and a first inner frame member 36 and a second inner frame member 37. The support shaft 30, the first inner frame member 36, and the second inner frame member 37 are made of metal. The support shaft 30 penetrates through the magnet 61 and the yoke 35. The magnet 61 is disc-shaped.

[0019] The first inner frame member 36 includes a cylindrical portion 360 and an annular protrusion 361 protruding from the inner peripheral side of the cylindrical portion 360. The second inner frame member 37 includes a cylindrical portion 370 and an annular protrusion 371 protruding from the inner peripheral side of the cylindrical portion 370. When manufacturing the movable body 3, the support shaft 30 is press-fitted into the annular protrusion 361 of the first inner frame member 36 and the annular protrusion 361 of the second inner frame member 37 on both sides in the axial direction of the magnet 61 and the yoke 35.

[0020] The yoke 35 includes a first yoke 31 that abuts against the magnet 61 from one side L1 in the axial direction, and a second yoke 32 that abuts against the magnet 61 from the other side L2 in the axial direction. The second yoke 32 includes a disc-shaped first magnetic member 33, a cup-shaped second magnetic member 34, and a disc-shaped third magnetic member 38. The second magnetic member 34 includes a disc portion 341 that abuts against the first magnetic member 33 from the other side L2 in the axial direction, a bent portion 342 provided at the outer edge of the disc portion 341, and a cylindrical portion 343 that extends from the bent portion 342 to one side L1 in the axial direction. As shown in FIG. 3, the coil 62 wound around the body portion 42 of the coil holder 4 is disposed between the cylindrical portion 343 of the second yoke 32 and the outer peripheral surface of the magnet 61.

[0021] (Connector) The movable body 3 is connected to the support 2 via a connector at two locations separated in the axial direction. The connecting body includes an annular first connecting body 11 joined to the inner peripheral surface of the first outer frame member 51 and the outer peripheral surface of the first inner frame member 36, and an annular second connecting body 12 joined to the inner peripheral surface of the second outer frame member 52 and the outer peripheral surface of the second inner frame member 37. When the movable body 3 vibrates in the axial direction, the first connecting body 11 and the second connecting body 12 are sheared. The first connecting body 11 and the second connecting body 12 are manufactured by a method of filling a gel material into a mold and curing it (casting).

[0022] (Additional weight member) Figs. 1, 2, and 3 show a mode in which a first weight member G1 and a second weight member G2 as additional weight members are attached to the movable body 3. The movable body 3 includes a first attachment portion T1 for attaching the first weight member G1 and a second attachment portion T2 for attaching the second weight member G2. The first attachment portion T1 and the second attachment portion T2 are provided on the support shaft 30. As shown in Fig. 3, the support shaft 30 has an axial length longer than that of the case 20. One end of the support shaft 30 on one axial side L1 protrudes from the first opening M1 in the axial direction of one side L1, and the other end of the support shaft 30 on the other axial side L2 protrudes from the second opening M2 in the axial direction of the other side L2. The first attachment portion T1 is provided at one end of the support shaft 30 on one axial side L1. The second attachment portion T2 is provided at the other end of the support shaft 30 on the other axial side L2.

[0023] The first attachment portion T1 and the second attachment portion T2 are provided in a portion extending outside the case 20 from the first opening M1 and the second opening M2. Therefore, the first weight member G1 and the second weight member G2 can be attached to the movable body 3 from the outside of the case 20 without disassembling the case 20. In this embodiment, the first weight member G1 attached to the first attachment portion T1 and the second weight member G2 attached to the second attachment portion T2 are entirely disposed outside the case 20.

[0024] The first mounting portion T1 and the second mounting portion T2 are male screw portions provided with screw grooves on the outer peripheral surface of the support shaft 30. The first weight member G1 and the second weight member G2 each include a weight-side female screw portion S1 provided with a screw groove on the inner peripheral surface of a hole that opens in the axial direction. The first weight member G1 is fixed to the end portion on one side L1 in the axial direction of the movable body 3 by screwing the first mounting portion T1 into the weight-side female screw portion S1. Similarly, the second weight member G2 is fixed to the end portion on the other side L2 in the axial direction of the movable body 3 by screwing the second mounting portion T2 into the weight-side female screw portion S1. The weight-side female screw portion S1 penetrates through the radial center of the first weight member G1 and the second weight member G2 in the axial direction.

[0025] The first weight member G1 and the second weight member G2 can be made of, for example, metal, but are not limited to being made of metal. In this embodiment, the first weight member G1 and the second weight member G2 have the same shape, and the first opening M1 and the second opening M2 have the same shape. The first weight member G1 is columnar, and the shape seen from the axial direction is smaller than that of the first opening M1. The second weight member G2 is columnar, and the shape seen from the axial direction is smaller than that of the second opening M2.

[0026] In this embodiment, as described above, the first weight member G1 and the second weight member G2 are entirely disposed outside the case 20. Therefore, the first opening M1 and the second opening M2 only need to be large enough to allow the support shaft 30 to pass through. For example, the shape of the first opening M1 seen from the axial direction may be smaller than that of the first weight member G1. Similarly, the shape of the second opening M2 seen from the axial direction may be smaller than that of the second weight member G2.

[0027] When the actuator 1 is in a mode where the first weight member G1 and the second weight member G2 are not attached to the movable body 3, the magnet 61, the coil 62, and the yoke 35 of the magnetic drive mechanism 6 are not exposed inside the first opening M1 and the second opening M2. As shown in FIG. 3, when viewed from one side L1 in the axial direction, the first inner frame member 36, the first connecting body 11, and the first outer frame member 51 are arranged inside the first opening M1. Similarly, when viewed from the other side L2 in the axial direction, the second inner frame member 37, the second connecting body 12, and the second outer frame member 52 are arranged inside the second opening M2.

[0028] (Operation of the actuator) When the coil 62 of the actuator 1 is energized, the magnetic drive mechanism 6 generates a driving force for driving the movable body 3 in the axial direction. By intermittently energizing the coil 62, the movable body 3 vibrates in the axial direction. In a state where the first weight member G1 and the second weight member G2 are not attached to the movable body 3 and a state where at least one of the first weight member G1 and the second weight member G2 is attached to the movable body 3, the weight of the movable body 3 changes, so the resonance frequency changes. Further, when the actuator 1 is incorporated into a tactile device, the strength of the vibration felt by the user changes due to the change in the weight of the movable body 3.

[0029] (Advantages and effects of Embodiment 1) The actuator 1 of Embodiment 1 includes a movable body 3, a support 2 that houses the movable body 3, a connecting body that connects the movable body 3 and the support 2, and a magnetic drive mechanism 6 that relatively moves the movable body 3 with respect to the support 2. The movable body 3 includes a first attachment portion T1 provided at an end on one side L1 in the axial direction, which is the vibration direction of the movable body 3 with respect to the support 2, and a second attachment portion T2 provided at an end on the other side L2 in the axial direction. The case 20 is provided with a first opening M1 that opens at the end face on one side L1 in the axial direction and a second opening M2 that opens at the end face on the other side L2 in the axial direction. The first attachment portion T1 is located inside the first opening M1 when viewed from one side L1 in the axial direction. The second attachment portion T2 is located inside the second opening M2 when viewed from the other side L2 in the axial direction. The first attachment portion T1 can attach the first weight member G1, and the second attachment portion T2 can attach the second weight member G2.

[0030] According to Embodiment 1, without disassembling the support 2, additional weight members, i.e., the first weight member G1 and the second weight member G2, can be attached to the movable body 3 to change the weight. Therefore, the resonance frequency and vibration intensity of the actuator 1 can be changed.

[0031] In Embodiment 1, the movable body 3 has a support shaft 30 extending in the axial direction. The first attachment portion T1 is provided at an end on one side L1 in the axial direction of the support shaft 30, and the second attachment portion T2 is provided at an end on the other side L2 in the axial direction of the support shaft 30. By doing so, additional weight members can be attached to both ends of the movable body 3 in the axial direction using the existing component, i.e., the support shaft 30. Also, since the movable body 3 is assembled around the support shaft 30, the radial position accuracy of the additional weight members can be improved. Therefore, the shift of the center of gravity of the movable body 3 can be suppressed.

[0032] In Embodiment 1, the first attachment portion T1 and the second attachment portion T2 are male screw portions provided with screw grooves on the outer peripheral surface. The first weight member G1 and the second weight member G2 are provided with female screw portions S1 on the weight side into which the male screw portions are screwed. Therefore, when adding a weight member, it is only necessary to screw the male screw portion into the female screw portion, so the attachment work of the additional weight member is easy. In addition, since the additional weight member is detachable, it is possible to cope not only with the change of increasing the weight of the movable body 3 but also with the change of reducing the weight of the movable body 3.

[0033] The movable body 3 of Embodiment 1 can be configured to include a first weight member G1 and a second weight member G2. The first weight member G1 and the second weight member G2 are provided with female screw portions on the weight side into which male screw portions are screwed, or male screw portions on the weight side into which female screw portions are screwed. Thus, when the first weight member G1 and the second weight member G2 are added to the movable body 3, the weight of the movable body 3 increases, so that strong vibrations can be obtained. In addition, a resonance frequency corresponding to the increased weight can be realized.

[0034] The case 20 of Embodiment 1 includes a cylindrical case body 24 extending in the axial direction, a first lid member 21 that closes one end L1 in the axial direction of the case body 24 and is provided with a first opening M1, and closes the other end L2 in the axial direction of the case body 24 and the second opening M2 is It includes a provided second lid member 22. The connecting body includes an annular first connecting body 11 that surrounds the support shaft 30 on the other axial side L2 with respect to the first opening M1, and an annular second connecting body 12 that surrounds the support shaft 30 on one axial side L1 with respect to the second opening M2. The movable body 3 includes an annular first inner frame member 36 connected to the inner peripheral portion of the first connecting body 11 and an annular second inner frame member 37 connected to the inner peripheral portion of the second connecting body 12, and the support shaft 30 penetrates through the first inner frame member 36 and the second inner frame member 37. The first attachment portion T1 is provided at the end of the support shaft 30 protruding from the first inner frame member 36 toward one axial side L1, and the second attachment portion T2 is provided at the end of the support shaft 30 protruding from the second inner frame member 37 toward the other axial side L2. The magnetic drive mechanism 6 includes a magnet 61 fixed to the support shaft 30 and held between the first inner frame member 36 and the second inner frame member 37, and a coil 62 surrounding the outer periphery of the magnet 61. Thus, in Embodiment 1, since the annular connecting bodies are arranged on both axial sides of the magnetic drive mechanism 6, the magnetic drive mechanism 6 is not exposed inside the first opening M1 and the second opening M2. Therefore, when the movable body 3 is used in a mode where the first weight member G1 and the second weight member G2 are not attached, even if foreign matter may enter from the first opening M1 and the second opening M2, it is difficult for the foreign matter to reach the magnetic drive mechanism 6.

[0035] (Modification 1) Hereinafter, a modification of Embodiment 1 will be described. FIG. 4 is a cross-sectional view of an actuator 1A including a movable body 3A of Modification 1. As shown in FIG. 4, the length of the support shaft 30A of the movable body 3A is shorter than that in the form shown in FIGS. 1-3. A part of the first attachment portion T1 and the second attachment portion T2 in the axial direction is arranged inside the case 20. When the first weight member G1 and the second weight member G2 are attached, a part of the first weight member G1 in the axial direction is arranged inside the first opening M1, and a part of the second weight member G2 in the axial direction is arranged inside the second opening M2. By doing so, miniaturization in the axial direction of the actuator 1A can be achieved. Note that the entire first weight member G1 and the second weight member G2 may be configured to be accommodated inside the case 20.

[0036] (Modification 2) FIG. 5 is a perspective view of an actuator 1B including a movable body 3B according to Modification 2. FIG. 6 is a cross-sectional view of the actuator 1B including the movable body 3B according to Modification 2 taken along the line B-B in FIG. 5. In the movable body 3B, the length of the support shaft 30B is shorter than the length of the case 20 in the axial direction. One end of the support shaft 30B on one side L1 in the axial direction is disposed inside the first inner frame member 36B. The other end of the support shaft 30B on the other side L2 in the axial direction is disposed inside the second inner frame member 37B.

[0037] In Modification 2, a first weight member G3 and a second weight member G4 are provided as additional weight members. The movable body 3 includes a first attachment portion T3 and a second attachment portion T4. The first attachment portion T3 is provided on the first inner frame member 36B. The first attachment portion T3 is a female screw portion having a screw groove provided on the inner peripheral surface of the cylindrical portion 360B of the first inner frame member 36B. The first weight member G3 has a male screw portion S2 on the side of the weight provided at the end on the other side L2 in the axial direction. By screwing the male screw portion S2 on the side of the weight into the first attachment portion T3, the first weight member G3 is fixed to the first attachment portion T3. Similarly, the second attachment portion T4 is a female screw portion having a screw groove provided on the inner peripheral surface of the cylindrical portion 370B of the second inner frame member 37B. The second weight member G4 has a male screw portion S2 on the side of the weight provided at the end on one side L1 in the axial direction. By screwing the male screw portion S2 on the side of the weight into the second attachment portion T4, the second weight member G4 is fixed to the second attachment portion T4.

[0038] The first weight member G3 and the second weight member G4 each include a through hole H penetrating the center in the radial direction. When the first weight member G3 is attached to the first attachment portion T3, the end of the support shaft 30B on one side L1 in the axial direction fits into the through hole H of the first weight member G3. When the second weight member G4 is attached to the second attachment portion T4, the end of the support shaft 30B on the other side L2 in the axial direction fits into the through hole H of the second weight member G4.

[0039] The first hammer member G3 includes a disk portion G30 having a diameter larger than that of the first opening M1, a first stepped portion G31 protruding from the center in the radial direction of the disk portion G30, a second stepped portion G32 protruding from the center in the radial direction of the first stepped portion G31, and a third stepped portion G33 protruding from the center in the radial direction of the second stepped portion G32. As shown in FIG. 6, the disk portion G30 is disposed outside the case 20. The first stepped portion G31 and the second stepped portion G32 are disposed inside the first opening M1. The male screw portion S2 on the hammer side is provided on the outer peripheral surface of the third stepped portion G33. Similarly, the second hammer member G4 includes a disk portion G40 disposed outside the case 20, a first stepped portion G41 and a second stepped portion G42 disposed inside the second opening M2, and a third stepped portion G43 provided with the male screw portion S2 on the hammer side. The male screw portion S2 on the hammer side is provided on the outer peripheral surface of the third stepped portion G43.

[0040] (Other modification examples) In Embodiment 1 and Modification Example 1, the first attachment portion T1 and the second attachment portion T2 may be female screw portions provided with screw grooves on the inner peripheral surface. For example, the tips of the support shafts 30 and 30A are made hollow to provide female screw portions. In this case, the first hammer member G1 and the second hammer member G2 may be provided with male screw portions on the hammer side that engage with the female screw portions. Similarly, in Modification Example 2, the first attachment portion T3 and the second attachment portion T4 may be male screw portions. For example, the cylindrical portions 360B and 370B are projected to one side L1 in the axial direction of the first connector 11 and the other side L2 in the axial direction of the second connector 12, and male screw portions are provided on their outer peripheral surfaces. In this case, the first hammer member G3 and the second hammer member G4 may be provided with female screw portions on the hammer side that engage with the male screw portions.

[0041] The first attachment parts T1 and T3 and the second attachment parts T2 and T4 are not limited to a structure that is fixed by screwing a male screw part into a female screw part. For example, each weight member can be fixed to each attachment part by any one of caulking, press-fitting, and an adhesive. Alternatively, it can also be screwed using a fixing screw. When fixing by caulking, the prevention of the removal of each weight member can be achieved by the plastic deformation of the fixing part. Therefore, the durability can be enhanced. Also, when fixing by press-fitting or an adhesive, the process of providing a screw groove is unnecessary. Therefore, an increase in component cost can be suppressed.

[0042] (Embodiment 2) FIG. 7 is a perspective view of the actuator 1C according to Embodiment 2. FIG. 8 is a cross-sectional view of the actuator 1C according to Embodiment 2 cut along the XZ plane. FIG. 9 is an exploded perspective view of the actuator 1C according to Embodiment 2. FIG. 10 is an exploded perspective view of the magnetic drive mechanism 6C, the yoke 8, and the holder 15 of the actuator 1C according to Embodiment 2. The actuator 1C includes a support 2C and a movable body 3C, a magnetic drive mechanism 6C that relatively moves the movable body 3C with respect to the support 2C, and a connecting body that connects the support 2C and the movable body 3C. The magnetic drive mechanism 6C includes a magnet 61C and a coil 62C.

[0043] In the following description, the first direction Z, the second direction X, and the third direction Y are directions orthogonal to each other. Also, one side of the first direction Z is designated as Z1, and the other side of the first direction Z is designated as Z2. One side of the second direction X is designated as X1, the other side of the second direction X is designated as X2, one side of the third direction Y is designated as Y1, and the other side of the third direction Y is designated as Y2. In Embodiment 2, the movable body 3C vibrates in the second direction X with respect to the support 2C.

[0044] (Support) The support body 2C includes a case 20C in the shape of a rectangular parallelepiped whose dimension in the second direction X is larger than the dimension in the third direction Y. On one side Y1 surface in the third direction Y of the case 20C, a wiring board 7C connected to the coil 62C of the magnetic drive mechanism 6C is fixed. The case 20C includes a holder 15 that holds the coil 62C, a first cover member 16 that overlaps the holder 15 from one side Z1 in the first direction Z, and a second cover member 17 that overlaps the holder 15 from the other side Z2 in the first direction Z. As shown in FIG. 10, the holder 15 is provided with two coil holding holes 150 arranged in the second direction X. Each coil 62C is arranged in each coil holding hole 150. Each coil 62C has an effective side extending in the third direction Y. Note that the magnetic drive mechanism 6C may include one set or three or more sets of a combination of a magnet 61C and a coil 62C instead of two sets.

[0045] The first cover member 16, the holder 15, and the second cover member 17 are fastened by screws 18 arranged at one diagonal position in a state of being overlapped in the first direction Z. Two positioning pins 19 project from both end portions in the second direction X of the first cover member 16. The positioning pins 19 penetrate the holder 15 and the second cover member 17.

[0046] As shown in FIGS. 7 and 8, the case 20C is provided with a rectangular first opening M5 that opens at the end face on one side X1 in the second direction X, and a rectangular second opening M6 that opens at the end face on the other side X2 in the second direction X. The first opening M5 and the second opening M6 have the same shape. As shown in FIG. 9, the first opening M5 is formed by notching the end portion on one side X1 of the holder 15 and the edge portion on one side X1 in the second direction X of the second cover member 17. Similarly, the second opening M6 is formed by notching the end portion on the other side X2 in the second direction X of the holder 15 and the edge portion on the other side X2 in the second direction X of the second cover member 17.

[0047] (Movable body) The movable body 3C includes a magnet 61C and a yoke 8 that holds the magnet 61C. The yoke 8 includes a first plate portion 81 that faces one side Z1 of the first direction Z with respect to the coil 62C, and a second plate portion 82 that faces the other side Z2 of the first direction Z with respect to the coil 62C. Further, the yoke 8 includes a first connection portion 83 that connects the first plate portion 81 and the second plate portion 82 on one side X1 of the second direction with respect to the coil 62C, and a second connection portion 84 that connects the first plate portion 81 and the second plate portion 82 on the other side X2 of the second direction with respect to the coil 62C. The first connection portion 83 and the second connection portion 84 are disposed in a notch portion formed by cutting out the holder 15.

[0048] The first plate portion 81, the first connection portion 83, and the second connection portion 84 are manufactured by bending a single metal plate. The first connection portion 83 and the second connection portion 84 are bent from both ends of the first plate portion 81 in the second direction X toward one side Z1 of the first direction Z. The first connection portion 83 and the second connection portion 84 are fixed to both ends of the second plate portion 82 by welding. The magnet 61C is disposed on the surface of the first plate portion 81 facing the coil 62C and on the surface of the second plate portion 82 facing the coil 62C. Note that the magnet 61C may be disposed on either the first plate portion 81 or the second plate portion 82.

[0049] (Connector) The connector is disposed at a location where the support body 2C and the movable body 3C face each other in the first direction Z. As shown in FIG. 8, in Embodiment 2, as the connector, a first connector 13 disposed at a location where the first plate portion 81 of the yoke 8 and the first cover member 16 of the support body 2C face each other in the first direction Z, and a second connector 14 disposed at a location where the second plate portion 82 of the yoke 8 and the second cover member 17 of the support body 2C face each other in the first direction Z are provided. Two of the first connectors 13 and the second connectors 14 are arranged in the second direction X, respectively. When the movable body 3C vibrates in the second direction X, the first connector 13 and the second connector 14 undergo shear deformation.

[0050] (Additional weight member) Figures 7, 8, and 9 show a state in which a first weight member G5 and a second weight member G6 as additional weight members are attached to the movable body 3C. The movable body 3C includes a first attachment portion T5 for attaching the first weight member G5 and a second attachment portion T6 for attaching the second weight member G6. The first attachment portion T5 and the second attachment portion T6 are provided on the yoke 8. As shown in FIG. 8, the yoke 8 includes a first connection portion 83 located inside the first opening M5 of the case 20C and a second connection portion 84 located inside the second opening M6 of the case 20C. The first attachment portion T5 is provided on the first connection portion 83. The second attachment portion T6 is provided on the second connection portion 84 are provided.

[0051] As shown in FIGS. 8 and 10, the first attachment portion T5 and the second attachment portion T6 are female screw portions provided with screw grooves on the inner peripheral surface of a through hole that penetrates the first connection portion 83 and the second connection portion 84 in the second direction X. The first attachment portion T5 is located inside the first opening M5 as viewed from the second direction X. The second attachment portion T6 is located inside the second opening M6 as viewed from the second direction X.

[0052] The first weight member G5 and the second weight member G6 each include a weight-side male screw portion S3 provided with a screw groove on the outer peripheral surface. The first weight member G5 is fixed to one end X1 of the movable body 3 in the second direction X by screwing the weight-side male screw portion S3 into the first attachment portion T5. The second weight member G6 is fixed to the other end X2 of the movable body 3 in the second direction X by screwing the weight-side male screw portion S3 into the second attachment portion T6.

[0053] The first weight member G5 includes a disk portion G50 disposed outside the case 20C, a columnar shaft portion G51 extending in the second direction X from the center in the radial direction of the disk portion G50, and a convex portion G52 protruding from the tip surface of the shaft portion G51. The weight-side male screw portion S3 is provided on the outer peripheral surface of the convex portion G52. The disk portion G50 has a shape that cannot pass through the first opening M5, but the shaft portion G51 has a thickness that can pass through the first opening M5. The weight-side male screw portion S3 of the first weight member G5 is screwed into the first attachment portion T5 until the tip surface of the shaft portion G51 abuts against the first connection portion 83.

[0054] The second hammer member G6 has the same shape as the first hammer member G5. The second hammer member G6 includes a disk portion G60 disposed outside the case 20C, a columnar shaft portion G61 extending in the second direction X from the center in the radial direction of the disk portion G60, and a convex portion G62 protruding from the tip surface of the shaft portion G61. The male screw portion S3 on the hammer side is provided on the outer peripheral surface of the convex portion G62. The disk portion G60 cannot pass through the second opening M6, but the shaft portion G61 has a thickness that can pass through the second opening M6. The male screw portion S3 on the hammer side of the second hammer member G6 is screwed into the second attachment portion T6 until the tip surface of the shaft portion G61 abuts against the second connection portion 84.

[0055] (Operation of the actuator) Similar to the first embodiment, the actuator 1C intermittently energizes the coil 62C, causing the movable body 3C to vibrate in the second direction X. When the first hammer member G5 and the second hammer member G6 are not attached to the movable body 3C and when at least one of the first hammer member G5 and the second hammer member G6 is attached to the movable body 3C, the weight of the movable body 3C changes, so the resonance frequency changes. Also, when the actuator 1C is incorporated into the tactile device, the strength of the vibration felt by the user changes due to the change in the weight of the movable body 3.

[0056] (Advantages of the second embodiment) Similar to Embodiment 1, the actuator 1C of Embodiment 2 includes a movable body 3C, a support 2C that houses the movable body 3C, a connecting body that connects the movable body 3C and the support 2C, and a magnetic drive mechanism 6C that relatively moves the movable body 3C with respect to the support 2C. The movable body 3C includes a first attachment portion T5 provided at an end portion on one side X1 of the second direction X, which is the vibration direction of the movable body 3C with respect to the support 2C, and a second attachment portion T6 provided at an end portion on the other side X2 of the second direction X. The case 20C is provided with a first opening M5 that opens at an end face on one side X1 of the second direction X and a second opening M6 that opens at an end face on the other side X2 of the second direction X. The first attachment portion T5 is located inside the first opening M5 when viewed from one side X1 of the second direction X. The second attachment portion T6 is located inside the second opening M6 when viewed from the other side X2 of the second direction X. The first attachment portion T5 can attach the first weight member G5, and the second attachment portion T6 can attach the second weight member G6.

[0057] In Embodiment 2, similar to Embodiment 1, without disassembling the support 2C, the first weight member G5 and the second weight member G6, which are additional weight members, can be attached to the movable body 3C to change the weight. Therefore, the resonance frequency and vibration strength of the actuator 1C can be changed. Further, since the attachment and detachment of the first weight member G5 and the second weight member G6 are performed by screwing in the male screw portion, the attachment work of the additional weight member is easy. Also, not only can the weight of the movable body 3C be increased, but it is also possible to cope with changes that reduce the weight of the movable body 3C.

[0058] ​Furthermore, the magnetic drive mechanism 6C of Embodiment 2 includes a coil 62C disposed on the support 2C and a magnet 61C facing the coil 62C in the first direction Z that intersects the second direction X. The movable body 3C includes a yoke 8 to which the magnet 61C is fixed. The yoke 8 includes a first plate portion 81 that overlaps the coil 62C from one side Z1 in the first direction Z, a second plate portion 82 that overlaps the coil 62C from the other side Z2 in the first direction Z, a first connecting portion 83 that is disposed on one side X1 in the second direction X with respect to the coil 62C and connects the first plate portion 81 and the second plate portion 82, and a second connecting portion 84 that is disposed on the other side X2 in the second direction X with respect to the coil 62C and connects the first plate portion 81 and the second plate portion 82. The magnet 61C is fixed to at least one of the first plate portion 81 and the second plate portion 82. A first mounting portion T5 is provided on the first connecting portion 83, and a second mounting portion T6 is provided on the second connecting portion 84.

[0059] Thus, in Embodiment 2, an additional weight member can be attached using the existing part, the yoke 8. At that time, the first mounting portion T5 and the second mounting portion T6 can be provided without affecting the portion where the magnet 61C is attached. Further, the yoke 8 is assembled so as to surround the magnet 61C and the coil 62C, and the magnet 61C and the coil 62C are not exposed inside the first opening M5 and the second opening M6. Therefore, when the actuator 1C is used in a mode where the first weight member G5 and the second weight member G6 are not attached, even if foreign matter enters from the first opening M5 and the second opening M6, it is difficult for the foreign matter to reach the magnetic drive mechanism 6C.

[0060] (Modification 3) Next, a modification of Embodiment 2 will be described. FIG. 11 is a perspective view of an actuator 1D including a movable body 3D of Modification 3. FIG. 12 is an exploded perspective view of the actuator 1D including the movable body 3D of Modification 3. A support 2D of the actuator 1D includes a first opening and a second opening M8. Although not shown in FIG. 11, the first opening opens on an end surface on one side X1 in the second direction X of the case 20D in a shape overlapping the second opening M8 when viewed from the second direction X. The support 2D is configured identically to the support 2C of Embodiment 2, except that the first opening and the second opening M8 provided in the case 20D are smaller in height in the first direction Z than the first opening M5 and the second opening M6 of Embodiment 2 shown in FIG. 7.

[0061] A first weight member G7 and a second weight member G8 can be attached to the movable body 3D as additional weight members. The movable body 3D includes a first attachment portion T7 and a second attachment portion T8. As shown in FIG. 11, in the movable body 3D, a part of the yoke 8D extends from the first opening and the second opening M8 to both sides in the second direction X of the case 20C and functions as the first attachment portion T7 and the second attachment portion T8.

[0062] The yoke 8D includes a plate-shaped first protrusion 85 extending to one side X1 in the second direction X with respect to the first connection portion 83, and a plate-shaped second protrusion 86 extending to the other side X2 in the second direction X with respect to the second connection portion 84. The first protrusion 85 and the second protrusion 86 are connected to end portions on both sides in the second direction X of the second plate portion 82. The first protrusion 85 extends from a corner where the second plate portion 82 and the first connection portion 83 are connected to one side X1 in the second direction X. The second protrusion 86 extends from a corner where the second plate portion 82 and the second connection portion 84 are connected to the other side X2 in the second direction X.

[0063] The first attachment portion T7 is the tip of the first protrusion 85 protruding from the first opening to the outside of the case 20D It is provided at the end. The second attachment part T8 is provided at the tip of the second protruding part 86 that protrudes from the second opening M8 to the outside of the case 20D. The first weight member G7 is fixed to the first attachment part T7 by an adhesive from the other side Z2 in the first direction Z. The second weight member G8 is fixed to the second attachment part T8 by an adhesive from the other side Z2 in the first direction Z.

[0064] (Modification 4) FIG. 13 is a perspective view of the actuator 1E including the movable body 3E of Modification 4. FIG. 14 is a perspective view of the movable body 3E and the support 2C of Modification 3. The actuator 1E includes the same support 2C as that in Embodiment 2 shown in FIG. 7. As additional weight members, a first weight member G9 and a second weight member G10 can be attached to the movable body 3E. The movable body 3E includes a first attachment part T9 and a second attachment part T10. As shown in FIG. 12, the movable body 3E includes a first protruding part 87 and a second protruding part 88 that protrude from both sides of the case 20C in the second direction X through the first opening M5 and the second opening M6.

[0065] The first protruding part 87 and the second protruding part 88 are metal round bars. The end of the first protruding part 87 on one side X1 in the second direction X is fixed to a fixing hole that penetrates the first connection part 83. The end of the first protruding part 87 on the other side X2 in the second direction X passes through the center of the first opening M5 and extends to the outside of the case 20C. The end of the second protruding part 88 on the other side X2 in the second direction X is fixed to a fixing hole that penetrates the second connection part 84. The end of the second protruding part 88 on one side X1 in the second direction X passes through the center of the second opening M6 and extends to the outside of the case 20C.

[0066] The first attachment part T9 is provided at the tip of the first protruding part 87. The second attachment part T10 is provided at the tip of the second protruding part 88. The first weight member G9 and the second weight member G10 each include a fixing hole H1 that opens in the second direction X. The fixing hole H1 penetrates the radial center of the first weight member G9 and the second weight member G10. The first weight member G9 is fixed to the movable body 3E by press-fitting the first attachment part T9 into the fixing hole H1. The second weight member G10 is fixed to the movable body 3E by press-fitting the second attachment part T10 into the fixing hole H1.

[0067] Note that, the tips of the first attachment part T9 and the second attachment part T10 inserted into the fixing hole H1 can be plastically deformed, and the first hammer member G9 and the second hammer member G10 can be fixed by caulking. Further, the first attachment part T9 and the second attachment part T10 can be made into male screw parts, and a hammer-side female screw part can be provided on the inner peripheral surface of the fixing hole H1.

[0068] (Other modification examples) In Embodiment 2, the first hammer member G5 and the second hammer member G6 may be structured to be fixed to the yoke 8 or a protruding part protruding from both sides in the vibration direction from the yoke 8 by a fixing method other than screwing the male screw part into the female screw part. For example, they can be fixed by any of the methods of press-fitting, caulking, and adhesive. Alternatively, they can also be screwed using fixing screws.

[0069] In Embodiment 2, the yoke 8 can be provided with at least one of a first connection part 83 and a second connection part 84. That is, the yoke 8 may have a U-shaped shape when viewed from the third direction Y. In this case, the first attachment part can be provided at the end of one side X1 in the second direction X of the second plate part 81, or at a first protruding part protruding from the end of one side X1 in the second direction X of the second plate part 81. The second attachment part can be provided at the end of the other side X2 in the second direction X of the second plate part 81, or at a second protruding part protruding from the end of the other side X2 in the second direction X of the second plate part 81.

[0070] (Other embodiments) The configuration of Embodiment 2 is such that the movable body includes a magnet holder instead of the yoke 8, and a magnet 61C held by the magnet holder and a coil 62C held by the support 2 are in the first direction Z It can be changed to a configuration facing [the relevant object]. The first attachment part for attaching the first weight member can be provided at the end of one side X1 of the second direction X of the magnet holder, or at the first protruding part protruding from the end of one side X1 of the second direction X of the magnet holder. The second attachment part for attaching the second weight member can be provided at the end of the other side X2 of the second direction X of the magnet holder, or at the second protruding part protruding from the end of the other side X2 of the second direction X of the magnet holder. For example, the magnet holder is a metal plate provided with a hole in a shape into which a magnet fits. The first attachment part and the second attachment part can be structured to attach the first weight member and the second weight member by various fixing methods such as screwing, press-fitting, caulking, adhesive, or screwing, similar to Embodiment 2.

[0071] (Summary) The summary of the present disclosure is described below. (1) It has a movable body, a support body that houses the movable body, a connecting body that connects the movable body and the support body, and a magnetic drive mechanism that relatively moves the movable body with respect to the support body. The movable body includes a first attachment part provided at one end of the movable body in the vibration direction with respect to the support body, and a second attachment part provided at the other end of the vibration direction. The case is provided with a first opening that opens to one side in the vibration direction and a second opening that opens to the other side in the vibration direction. The first attachment part is located inside the first opening when viewed from one side in the vibration direction. The second attachment part is located inside the second opening when viewed from the other side in the vibration direction, and is a characteristic actuator.

[0072] (2) The movable body has a support shaft extending in the vibration direction. The first attachment part is provided at one end of the support shaft in the vibration direction. The second attachment part is provided at the other end of the support shaft in the vibration direction, and is the actuator according to the above (1).

[0073] (3) The case includes a cylindrical case body extending in the vibration direction, a first lid member closing one end of the case body in the vibration direction and provided with the first opening, and a second lid member closing the other end of the case body in the vibration direction and provided with the second opening. The connector includes an annular first connector surrounding the support shaft on the other side in the vibration direction with respect to the first opening, and an annular second connector surrounding the support shaft on one side in the vibration direction with respect to the second opening. The movable body includes an annular first inner frame member connected to the inner peripheral portion of the first connector, and an annular second inner frame member connected to the inner peripheral portion of the second connector. The support shaft penetrates through the first inner frame member and the second inner frame member. The first attachment portion is provided at an end of the support shaft protruding from the first inner frame member to one side in the vibration direction, and the second attachment portion is provided at an end of the support shaft protruding from the second inner frame member to the other side in the vibration direction. The magnetic drive mechanism includes a magnet fixed to the support shaft and held between the first inner frame member and the second inner frame member, and a coil surrounding the outer periphery of the magnet. The actuator according to (2) above is characterized by this.

[0074] (4) The case includes a cylindrical case body extending in the vibration direction, and the vibration A first lid member closing one end of the case body in the direction and provided with the first opening, and a second lid member closing the other end of the case body in the vibration direction and provided with the second opening. The connector includes an annular first connector surrounding the support shaft extending in the vibration direction on the other side in the vibration direction with respect to the first opening, and an annular second connector surrounding the support shaft on one side in the vibration direction with respect to the second opening. The movable body includes the support shaft, an annular first inner frame member connected to the inner peripheral portion of the first connecting body, and an annular second inner frame member connected to the inner peripheral portion of the second connecting body, and the support shaft penetrates through the first inner frame member and the second inner frame member. The first mounting portion is provided on the first inner frame member, and the second mounting portion is provided on the second inner frame member. The magnetic drive mechanism is characterized in that it includes a magnet fixed to the support shaft and held between the first inner frame member and the second inner frame member, and a coil surrounding the outer periphery of the magnet, and is the actuator according to (3) above.

[0075] (5) The magnetic drive mechanism includes a coil disposed on the support and a magnet facing the coil in a first direction intersecting the vibration direction. The movable body includes a yoke to which the magnet is fixed. The yoke includes a first plate portion overlapping the coil from one side in the first direction and a second plate portion overlapping the coil from the other side in the first direction, and a first connecting portion disposed on one side in the vibration direction with respect to the coil and connecting the first plate portion and the second plate portion, and a second connecting portion disposed on the other side in the vibration direction with respect to the coil and connecting the first plate portion and the second plate portion, and at least one of the first plate portion and the second plate portion has the magnet fixed thereto. The first mounting portion is provided at an end on one side in the vibration direction of the first connecting portion or the second plate portion. The actuator according to (1) above, characterized in that the second mounting portion is provided at an end on the other side in the vibration direction of the second connecting portion or the second plate portion.

[0076] (6) The magnetic drive mechanism includes a coil disposed on the support and a magnet facing the coil in a first direction intersecting the vibration direction. The movable body includes a yoke to which the magnet is fixed. the yoke includes a first plate portion overlapping the coil from one side in the first direction, and a second plate portion overlapping the coil from the other side in the first direction, and includes at least one of a first connection portion disposed on one side in the vibration direction with respect to the coil and connecting the first plate portion and the second plate portion, and a second connection portion disposed on the other side in the vibration direction with respect to the coil and connecting the first plate portion and the second plate portion, the magnet is fixed to at least one of the first plate portion and the second plate portion, the movable body further includes a first protruding portion extending from the second plate portion or the first connecting portion toward one side in the vibration direction, and a second protruding portion extending from the second plate portion or the second connecting portion toward the other side in the vibration direction, The actuator according to (1) above, wherein the first mounting portion is provided on the first protruding portion, and the second mounting portion is provided on the second protruding portion.

[0077] (7) the magnetic drive mechanism includes a coil disposed on the support and a magnet facing the coil in a first direction intersecting the vibration direction, the movable body includes a magnet holder that holds the magnet, the first attachment portion is provided on an end portion of the magnet holder on one side in the vibration direction, or on a first protruding portion protruding from the end portion of the magnet holder on one side in the vibration direction, The actuator described in (1) above, characterized in that the second mounting portion is provided on the other end of the magnet holder in the vibration direction, or on a second protrusion protruding from the other end of the magnet holder in the vibration direction.

[0078] (8) The actuator according to any one of (2) to (7) above, wherein the first mounting portion and the second mounting portion are male thread portions or female thread portions.

[0079] (9) having the first weight member and the second weight member, The actuator according to the above (8), wherein the first hammer member and the second hammer member are provided with a female thread portion on the hammer side into which the male thread portion is screwed, or a male thread portion on the hammer side into which the female thread portion is screwed.

[0080] (10) having the first hammer member and the second hammer member, the first hammer member is fixed to the first mounting portion by any one of screwing, an adhesive, press-fitting, and caulking, The actuator according to any one of the above (2) to (7), wherein the second hammer member is fixed to the second mounting portion by any one of screwing, an adhesive, press-fitting, and caulking.

Description of reference numerals

[0081] 1, 1A, 1B, 1C, 1D, 1E… Actuators, 2, 2C, 2D… Supports, 3, 3A, 3B, 3C, 3C, 3D, 3E… Movable bodies, 4… Coil holders, 6, 6C… Magnetic drive mechanisms, 7, 7C… Wiring boards, 8, 8D… Yokes, 11, 13… First connectors, 12, 14… Second connectors, 15… First holder, 16… First cover member, 17… Second cover member, 18… Screws, 19… Positioning pins, 20, 20C, 20D… Cases, 21… First lid member, 22… Second lid member, 24… Case body, 25… Second outer frame member fixing part, 26… Lid part, 27… Locking part, 28… Regulation part, 30, 30A, 30B… Support shafts, 31… First yoke, 32… Second yoke, 33… First magnetic member, 34… Second magnetic member, 35… Yoke, 36, 36B… First inner frame member, 37, 37B… Second inner frame member, 38… Third magnetic member, 41… First outer frame member fixing part, 42… Barrel part, 51… First outer frame member, 52… Second outer frame member, 61, 61C… Magnets, 62, 62C… Coils, 64… Terminal pins, 69… Board fixing part, 81… First plate part, 82… Second plate part, 83… First connection part, 84… Second connection part, 85, 87… First protrusions, 86, 88… Second protrusions, 150… Coil holding holes, 341… Disc part, 342… Bending part, 343… Cylindrical part, 360, 360B… Cylindrical part, 361… Annular protrusion, 370, 370B… Cylindrical part, 371… Annular protrusion, G1, G3, G5, G7, G9… First weight members, G2, G4, G6, G8, G10… Second weight members, G30… Disc part, G31… First step part, G32… Second step part, G33… Third step part, G40… Disc part, G41… First step part, G42… Second step part, G43… Third step part, G50… Disc part, G51… Shaft part, G52… Convex part, G60… Disc part, G61… Shaft part, G62… Convex part, H… Through hole, H1… Fixing hole, L… Central axis, L1… One side in the axial direction, L2… The other side in the axial direction, M1, M5… First openings, M2, M6, M8… Second openings, S1… Female screw part on the weight side, S2… Male screw part on the weight side, S3… Female screw part on the weight side, T1, T3, T5, T7, T9… First attachment parts, T2, T4, T6, T8, T10… Second attachment parts, X… Second direction, Y… Third direction, Z… First direction

Claims

1. A support including a movable body and a case for housing the movable body, a connecting body for connecting the movable body and the support, and a magnetic drive mechanism for relatively moving the movable body with respect to the support, wherein the movable body includes a first attachment portion provided at one end of the movable body in the vibration direction with respect to the support, and a second attachment portion provided at the other end of the movable body in the vibration direction, wherein the case is provided with a first opening that opens to one side in the vibration direction and a second opening that opens to the other side in the vibration direction, wherein the first attachment portion is located inside the first opening when viewed from one side in the vibration direction, wherein the second attachment portion is located inside the second opening when viewed from the other side in the vibration direction, and wherein the first attachment portion is capable of attaching a first weight member, and the second attachment portion is capable of attaching a second weight member. An actuator characterized by this.

2. wherein the movable body has a support shaft extending in the vibration direction, wherein the first attachment portion is provided at one end of the support shaft in the vibration direction, and wherein the second attachment portion is provided at the other end of the support shaft in the vibration direction. The actuator according to claim 1, characterized by this.

3. wherein the case includes a cylindrical case body extending in the vibration direction, a first lid member that closes one end of the case body in the vibration direction and is provided with the first opening, and a second lid member that closes the other end of the case body in the vibration direction and is provided with the second opening, wherein the connecting body includes an annular first connecting body that surrounds the support shaft on the other side in the vibration direction with respect to the first opening, and an annular second connecting body that surrounds the support shaft on one side in the vibration direction with respect to the second opening, wherein the movable body includes an annular first inner frame member connected to the inner peripheral portion of the first connecting body and an annular second inner frame member connected to the inner peripheral portion of the second connecting body, and the support shaft penetrates through the first inner frame member and the second inner frame member, wherein the first attachment portion is provided at the end of the support shaft protruding from the first inner frame member to one side in the vibration direction, and the second attachment portion is provided at the end of the support shaft protruding from the second inner frame member to the other side in the vibration direction, and wherein the magnetic drive mechanism includes a magnet fixed to the support shaft and held between the first inner frame member and the second inner frame member, and a coil surrounding the outer periphery of the magnet. The actuator according to claim 2, characterized by this.

4. The case includes a cylindrical case body extending in the vibration direction, a first lid member closing one end of the case body in the vibration direction and provided with the first opening, and a second lid member closing the other end of the case body in the vibration direction and provided with the second opening. The connector includes an annular first connector surrounding a support shaft extending in the vibration direction on the other side of the vibration direction with respect to the first opening, and an annular second connector surrounding the support shaft on one side of the vibration direction with respect to the second opening. The movable body includes the support shaft, an annular first inner frame member connected to the inner peripheral portion of the first connector, and an annular second inner frame member connected to the inner peripheral portion of the second connector. The support shaft penetrates through the first inner frame member and the second inner frame member. The first attachment portion is provided on the first inner frame member, and the second attachment portion is provided on the second inner frame member. The magnetic drive mechanism is characterized by including a magnet fixed to the support shaft and held between the first inner frame member and the second inner frame member, and a coil surrounding the outer periphery of the magnet. The actuator according to claim 1.

5. The magnetic drive mechanism includes a coil disposed on the support body, and a magnet facing the coil in a first direction intersecting the vibration direction. The movable body includes a yoke to which the magnet is fixed. The yoke includes a first plate portion overlapping the coil from one side in the first direction and a second plate portion overlapping the coil from the other side in the first direction, and a first connection portion disposed on one side of the vibration direction with respect to the coil and connecting the first plate portion and the second plate portion, and / or a second connection portion disposed on the other side of the vibration direction with respect to the coil and connecting the first plate portion and the second plate portion. The magnet is fixed to at least one of the first plate portion and the second plate portion. The first attachment portion is provided at one end of the first connection portion or the second plate portion on one side in the vibration direction. The actuator according to claim 1, wherein the second attachment portion is provided at one end of the second connection portion or the second plate portion on the other side in the vibration direction.

6. The magnetic drive mechanism includes a coil disposed on the support body, and a magnet facing the coil in a first direction intersecting the vibration direction. The movable body includes a yoke to which the magnet is fixed. The yoke includes a first plate portion that overlaps the coil from one side in the first direction and a second plate portion that overlaps the coil from the other side in the first direction, and further includes at least one of a first connection portion that is disposed on one side in the vibration direction with respect to the coil and connects the first plate portion and the second plate portion, and a second connection portion that is disposed on the other side in the vibration direction with respect to the coil and connects the first plate portion and the second plate portion. The magnet is fixed to at least one of the first plate portion and the second plate portion. The movable body further includes a first protrusion that extends from the second plate portion or the first connection portion to one side in the vibration direction, and a second protrusion that extends from the second plate portion or the second connection portion to the other side in the vibration direction. The actuator according to claim 1, wherein the first attachment portion is provided on the first protrusion, and the second attachment portion is provided on the second protrusion.

7. The magnetic drive mechanism includes a coil disposed on the support and a magnet that faces the coil in a first direction intersecting the vibration direction. The movable body includes a magnet holder that holds the magnet. The first attachment portion is provided at an end on one side in the vibration direction of the magnet holder, or at a first protrusion protruding from the end on one side in the vibration direction of the magnet holder. The actuator according to claim 1, wherein the second attachment portion is provided at an end on the other side in the vibration direction of the magnet holder, or at a second protrusion protruding from the end on the other side in the vibration direction of the magnet holder.

8. The actuator according to any one of claims 2 to 7, wherein the first attachment portion and the second attachment portion are a male screw portion or a female screw portion.

9. The actuator has the first weight member and the second weight member. The actuator according to claim 8, wherein the first weight member and the second weight member are provided with a weight-side female screw portion into which the male screw portion is screwed, or a weight-side male screw portion into which the female screw portion is screwed.

10. The actuator has the first weight member and the second weight member. The first weight member is fixed to the first attachment portion by any one of screwing, adhesive, press-fitting, and caulking. ​ The actuator according to any one of claims 2 to 7, wherein the second hammer member is fixed to the second mounting portion by any one of screwing, adhesive, press-fitting, and caulking.

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