Actuator

Abstract

To suppress rattling of a coil holder against an actuator case, to improve position accuracy of the coil holder, and to suppress a decrease in accuracy of an external dimension of a case.SOLUTION: An actuator 1 includes a movable body 5 provided with a magnet 7, a support body 3 provided with a case 2, a coil holder 17, and a coil 10, and a connection body 4. The coil holder 17 comprises two components, a first holder member 15 and a second holder member 16. The case 2 is provided with: a first end plate part 31 facing the movable body 5 from a Z1 direction; and a first case first side plate part 32 and a first case second side plate part 33 arranged on both ends in a Y direction of the first end plate part 31. A first holder side plate part 152 and a second holder side plate part 162 of the coil holder 17 are put in and positioned between a first rising part 36 and the first case first side plate part 32 formed in the first end plate part 31 and between the second rising part 37 and the first case second side plate part 33.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to an actuator that vibrates a movable body.

Background Art

[0002] Patent Document 1 discloses an actuator including a movable body provided with a magnet and a support provided with a coil, and vibrating the movable body with respect to the support by flowing a drive current through the coil. In this type of actuator, an elastic body or a viscoelastic body is used as a connecting body that connects the support and the movable body. When the movable body is vibrated, a reaction force corresponding to the vibration of the movable body is applied to the support through the connecting body. As a result, a user who touches the support can feel the vibration.

[0003] In the actuator of Patent Document 1, the support includes a metal case that defines the outer shape of the actuator and a resin coil holder. The coil is an air-core coil and is disposed in a coil placement hole provided in the coil holder. The movable body includes a first yoke facing the coil from one side and a second yoke facing the coil from the other side, and magnets are fixed to the first yoke and the second yoke, respectively.

[0004] In the actuator of Patent Document 1, the case includes a first case member that covers the coil holder from one side and a second case member that covers the coil holder from the other side. The coil holder includes a side plate portion formed at the outer edge of a plate portion provided with a coil placement hole. The case and the coil holder are assembled by assembling the side plate portion inside the first case member and the second case member manufactured by bending a metal plate.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] Conventionally, actuators with a metal case and a resin coil holder were designed with a gap between the parts to prevent assembly failures between the case and the coil holder, taking into account the dimensional tolerances of the components. However, this often leads to looseness between the case and the coil holder, reducing the positional accuracy of the coil holder relative to the case and causing variations in the actuator's vibration characteristics. On the other hand, a configuration has been proposed in which the coil holder is press-fitted into the case to eliminate looseness, but this has the problem of reducing the dimensional accuracy of the actuator's outer shape due to deformation of the case.

[0007] In view of the above problems, the object of the present invention is to suppress play of the coil holder relative to the actuator case, improve the positional accuracy of the coil holder, and suppress a decrease in the accuracy of the external dimensions of the case. [Means for solving the problem]

[0008] To solve the above problems, the actuator of the present invention comprises a movable body, a support body comprising a metal case and a resin coil holder for housing the movable body, a connecting body connected to the movable body and the support body, and a magnetic drive circuit comprising a coil held in the coil holder and a magnet facing the coil in a first direction, which vibrates the movable body in a second direction intersecting the first direction with respect to the support body, and when the direction intersecting the first direction and the second direction is defined as the third direction, the coil holder is relative to the coil The case comprises a first case member having a first end plate portion that extends in the first direction on one side of the third direction, and a second case member having a second end plate portion that faces the movable body from one side of the first direction, wherein the first case member has a first case first side plate portion extending from one end of the first end plate portion in the third direction to the other side of the first direction, and a first cut-up portion that is cut and bent from the first end plate portion to the other side of the first direction on the other side of the first case first side plate portion in the third direction, and the end of the first holder side plate portion in the first direction is sandwiched between the first case first side plate portion and the first cut-up portion.

[0009] According to the present invention, the actuator case and coil holder are positioned by sandwiching a side plate portion (first holder side plate portion) provided at the third end of the coil holder between a side plate portion (first case first side plate portion) provided at the third end of the case and a first cut-out portion located inside it. Therefore, play of the coil holder relative to the case in the third direction can be suppressed. Furthermore, since the coil holder can be positioned using the side plate portion of the case as a reference, the positional accuracy of the coil in the third direction relative to the case can be improved. In addition, since the cut-out portion provided inside the case is used for positioning, deformation of the side plate portion of the case (first case first side plate portion) associated with the positioning of the coil holder can be suppressed. Therefore, a decrease in the accuracy of the external dimensions of the case in the third direction can be suppressed.

[0010] In the present invention, it is preferable that one side member of the first holder side plate portion and the first end plate portion is provided with a first positioning projection that protrudes in the first direction, and the other side member of the first holder side plate portion and the first end plate portion is provided with a first positioning hole into which the first positioning projection fits. By fitting the protrusions and recesses in the first direction in this way, it is possible to suppress the rattle of the coil holder in the second direction relative to the case and to improve the positional accuracy of the coil holder in the second direction relative to the case. Furthermore, since a gap in the second direction can be provided between the side plate portion of the coil holder (first holder side plate portion) and the case, it is possible to suppress a decrease in the accuracy of the external dimensions of the case in the second direction.

[0011] In the present invention, the coil holder comprises a first holder member having a first coil holding portion arranged on one side of the coil in the third direction and a first holder side plate portion extending in the first direction from the end of the first coil holding portion on one side in the third direction, and a second holder member having a second coil holding portion arranged on the other side of the coil in the third direction and a second holder side plate portion extending in the first direction from the end of the second coil holding portion on the other side in the third direction, wherein the first case member comprises a first case second side plate portion extending in the other side of the first direction from the end of the first end plate portion on the other side in the third direction and a second cut-up portion cut out from the first end plate portion on one side of the first case second side plate portion in the third direction, and preferably the end of the second holder side plate portion on one side in the first direction is sandwiched between the first case second side plate portion and the second cut-up portion.

[0012] In this way, by dividing the coil holder into two parts in a third direction, the parts covering both sides of the coil in the second direction become unnecessary, thus reducing the external dimensions of the actuator in the second direction. Alternatively, the coil can be enlarged without increasing the external dimensions of the actuator, increasing the thrust of the magnetic drive circuit and generating larger vibrations. Furthermore, the first holder side plate and the second holder side plate are positioned by being sandwiched between the side plate of the case and the cut-out portion provided inside it at both ends of the case in the third direction. Therefore, even when the coil holder is divided into two parts, play of the coil holder in the third direction relative to the case can be suppressed, and the positional accuracy of the coil in the third direction relative to the case can be improved. In addition, a decrease in the accuracy of the external dimensions of the case in the third direction can be suppressed.

[0013] In the present invention, it is preferable that one side member of the second holder side plate portion and the first end plate portion is provided with a second positioning projection that protrudes in the first direction, and the other side member of the second holder side plate portion and the first end plate portion is provided with a second positioning hole into which the second positioning projection fits. This makes it possible to suppress play of the first holder member and the second holder member relative to the case in the second direction, and to improve the positional accuracy of the first holder member and the second holder member relative to the case in the second direction. Furthermore, it is possible to suppress a decrease in the accuracy of the external dimensions of the case in the second direction.

[0014] In the present invention, it is preferable that the movable body comprises a yoke for holding the magnet, the yoke comprises a first opposing portion facing the coil from one side in the first direction, and a second opposing portion facing the coil from the other side in the first direction, the magnet is fixed to at least one of the first opposing portion and the second opposing portion, and the first cut-up portion and the second cut-up portion comprises a first stopper portion that faces the first opposing portion from both sides in the third direction and defines the movable range of the yoke in the third direction. In this way, the risk of the actuator breaking due to the movable body moving significantly in a third direction different from the vibration direction due to impact such as dropping can be reduced. In addition, the cut-up portion for positioning the coil holder can also be used as a stopper, so the shape of the parts can be simplified.

[0015] In the present invention, the first case member comprises a first case third side plate portion extending from one end of the first end plate portion in the second direction to the other end in the first direction, and a first case fourth side plate portion extending from the other end of the first end plate portion in the second direction to the other end in the first direction, the yoke comprises a pair of connecting portions extending in the first direction on both sides of the coil in the second direction to connect the first opposing portion and the second opposing portion, and a pair of first rising portions extending from both ends of the first opposing portion in the second direction to the other end in the first direction on both sides of the pair of connecting portions in the third direction, the first case third side plate portion and the first case fourth side plate portion preferably comprises second stopper portions arranged on both sides of the pair of first rising portions in the second direction to define the range of motion of the yoke in the second direction. In this way, the risk of the actuator breaking due to the movable body moving excessively in the vibration direction due to impact such as dropping can be reduced. Furthermore, the raised section, which is designed to increase the weight of the yoke, can also be used as a stopper, thus simplifying the shape of the parts.

[0016] In the present invention, the support comprises a first metal plate overlapping the coil, the first coil holding portion, and the second coil holding portion from one side in the first direction, and a second metal plate overlapping the coil, the first coil holding portion, and the second coil holding portion from the other side in the first direction, and the connecting body preferably comprises a first connecting body connecting the first opposing portion and the first plate, and a second connecting body connecting the second opposing portion and the second plate. In this way, the coil can be protected by the first plate and the second plate, so there is little risk of the coil being damaged by collision with the magnet. Furthermore, since the first holder member, the second holder member, and the coil 10 can be held between the first plate and the second plate and treated as a coil assembly, even if the coil holder is divided into two members, a decrease in the ease of assembly of the actuator 1 can be suppressed. In addition, the connecting body can be placed inside the yoke to connect the coil assembly and the yoke. Therefore, since there is no need to secure space for the connecting body in the gap between the case and the yoke, the dimensions of the actuator in the first direction can be reduced.

[0017] In the present invention, the second case member comprises a second case first side plate portion extending from one end of the second end plate portion in the third direction to the other end in the first direction, and a second case second side plate portion extending from the other end of the second end plate portion in the third direction to the other end in the first direction, the first holder side plate portion comprises a first receiving portion to which the tip of the second case first side plate portion abuts from the other end in the first direction, and the second holder side plate portion comprises the second side of the second case It is preferable to have a second receiving portion that contacts the tip of the plate portion from the other side in the first direction. In this way, the first case member and the second case member are positioned in contact with the resin coil holder in the Z direction. Therefore, the positional accuracy of the first case member and the second case member in the Z direction can be improved. Thus, the accuracy of the external dimensions of the case in the Z direction can be improved. [Effects of the Invention]

[0018] According to the present invention, the case of the actuator and the coil holder are positioned by sandwiching a side plate portion (first holder side plate portion) provided at the end of the coil holder in the third direction between a side plate portion (first case first side plate portion) provided at the end of the case in the third direction and a first raised portion disposed inside thereof. Therefore, play in the third direction of the coil holder with respect to the case can be suppressed. Also, since the coil holder can be positioned with reference to the side plate portion of the case, the positional accuracy of the coil in the third direction with respect to the case can be enhanced. Further, since the raised portion provided inside the case is used for positioning, deformation of the side plate portion (first case first side plate portion) of the case accompanying the positioning of the coil holder can be suppressed. Therefore, a decrease in the accuracy of the outer dimensions of the case in the third direction can be suppressed.

Brief Description of the Drawings

[0019] [Figure 1] It is a perspective view of the actuator to which the present invention is applied, as seen from the Z2 direction and the Z1 direction. [Figure 2] It is a cross-sectional view when the actuator is cut in the longitudinal direction (a cross-sectional view cut at the A-A position in FIG. 1(a)). [Figure 3] It is a cross-sectional view when the actuator is cut in a direction orthogonal to the longitudinal direction (a cross-sectional view cut at the B-B position in FIG. 1(a)). [Figure 4] It is an exploded perspective view showing a state in which the movable body and the coil assembly are removed from the case. [Figure 5] It is an exploded perspective view of the movable body and the coil assembly as seen from the Z2 direction. [Figure 6] It is an exploded perspective view of the movable body and the coil assembly as seen from the Z1 direction. [Figure 7] It is a cross-sectional view of the actuator cut at the positions of the first raised portion and the second raised portion (a cross-sectional view cut at the C-C position in FIG. 1(a)). [Figure 8] It is an exploded perspective view of the first case member and the coil assembly as seen from the Z1 direction. [Figure 9] It is a plan view of the actuator with the second case member removed, as seen from the Z2 direction.

Embodiment for Implementing the Invention

[0020] Hereinafter, embodiments of an actuator to which the present invention is applied will be described with reference to the drawings.

[0021] (Overall Configuration) FIG. 1(a) is a perspective view of an actuator 1 to which the present invention is applied, seen from the Z2 direction. FIG. 1(b) is a perspective view of the actuator 1 to which the present invention is applied, seen from the Z1 direction. FIG. 2 is a cross-sectional view of the actuator 1 when cut in the longitudinal direction, and is a cross-sectional view cut at the A-A position in FIG. 1(a). FIG. 3 is a cross-sectional view of the actuator 1 when cut in a direction orthogonal to the longitudinal direction, and is a cross-sectional view cut at the B-B position in FIG. 1(a). FIG. 4 is an exploded perspective view showing a state where the movable body 5 and the coil set 13 are removed from the case 2. FIG. 5 is an exploded perspective view of the movable body 5 and the coil set 13 seen from the Z2 direction. FIG. 6 is an exploded perspective view of the movable body 5 and the coil set 13 seen from the Z1 direction.

[0022] The actuator 1 is used as a tactile device that transmits information by vibration. As shown in FIGS. 1(a) and 1(b), the outer shape of the actuator 1 is a rectangular parallelepiped shape. The actuator 1 generates vibration in the short side direction of its outer shape. In the following description, the short side direction in which vibration occurs is the X direction (second direction), the longitudinal direction of the actuator 1 and orthogonal to the X direction and the direction is the Y direction (third direction), and the thickness direction (height direction) of the actuator 1, which is orthogonal to the X direction and the Y direction, is the Z direction (first direction). Also, one side of the X direction is the X1 direction, and the other side is the X2 direction. One side of the Y direction is the Y1 direction, and the other side is the Y2 direction. One side of the Z direction is the Z1 direction, and the other side is the Z2 direction.

[0023] As shown in Figures 1-4, the actuator 1 comprises a support body 3 with a case 2 that defines its external shape, and a movable body 5 housed inside the case 2. The actuator 1 also includes a connecting body 4 that connects the support body 3 and the movable body 5, and a magnetic drive circuit 6 (see Figures 2 and 3) that moves the movable body 5 relative to the support body 3 in the X direction.

[0024] (Support) The support 3 comprises a case 2 and a coil assembly 13. As shown in Figures 2, 3, 5, and 6, the coil assembly 13 comprises a coil 10, a first plate 11 superimposed on the coil 10 in the Z1 direction, and a second plate 12 superimposed on the coil 10 in the Z2 direction. The first plate 11 and the second plate 12 are made of a non-magnetic metal.

[0025] As shown in Figures 2 and 3, the coil 10 is located in the center of the case 2 in the Z direction. The coil 10 is a flattened air-core coil with its thickness direction oriented in the Z direction. As shown in Figures 5 and 6, the coil 10 is elongated in the Y direction and has a pair of long sides 10a and 10b extending parallel to the Y direction. A central hole 10c extending in the Y direction is provided between the pair of long sides 10a and 10b.

[0026] As shown in Figures 5 and 6, the coil assembly 13 includes a first holder member 15 positioned on the Y1 side of the coil 10 and a second holder member 16 positioned on the Y2 side of the coil 10. The first holder member 15 and the second holder member 16 constitute a coil holder 17. The first holder member 15 and the second holder member 16 are made of resin.

[0027] The first holder member 15 includes a first coil holding portion 151 positioned between the first plate 11 and the second plate 12, and a first holder side plate portion 152 extending in the Z1 and Z2 directions from the Y1 side end of the first coil holding portion 151. The second holder member 16 includes a second coil holding portion 161 positioned between the first plate 11 and the second plate 12, and a second holder side plate portion 162 extending in the Z1 and Z2 directions from the Y1 side end of the second coil holding portion 161. The coil 10 is positioned between the first coil holding portion 151 and the second coil holding portion 161.

[0028] A power supply board 14 is fixed to the first holder member 15. In this embodiment, the power supply board 14 is a flexible printed circuit board. However, the power supply board 14 may also be a rigid circuit board. Power is supplied to the coil 10 via the power supply board 14.

[0029] The first plate 11 includes a first plate portion 111 that overlaps the coil 10 from the Z1 side, and a pair of first bent portions 112 that are bent in the Z2 direction from both ends of the first plate portion 111 in the X direction. The second plate 12 includes a second plate portion 121 that overlaps the coil 10 from the Z2 side, and a pair of second bent portions 122 that are bent in the Z1 direction from both ends of the second plate portion 121 in the X direction.

[0030] In the first plate 11, a first fixing portion 113 is provided on the Y1 and Y2 sides of each first bent portion 112, which is bent in the Z2 direction from the first plate portion 111. In the second plate 12, a second fixing portion 123 is provided on the Y1 and Y2 sides of each second bent portion 122, which is bent in the Z1 direction from the second plate portion 121.

[0031] When the first plate 11 and the second plate 12 are assembled to the first coil holding portion 151 and the second coil holding portion 161 from both sides in the Z direction, as shown in Figure 3, the first bent portion 112 The second bent portion 122 covers the long sides 10a and 10b of the coil 10 from both sides in the X direction. Also, the first fixing portion 113 of the first plate 11 and the second fixing portion 123 of the second plate 12 overlap on both sides in the Y direction of the first bent portion 112 and the second bent portion 122. The first fixing portion 113 and the second fixing portion 123 are locked in the Z direction. In addition, the claw portion 153 provided on the side surface of the first coil holding portion 151 and the claw portion 163 provided on the side surface of the second coil holding portion 161 are locked into the notches provided on the first fixing portion 113 and the second fixing portion 123 which overlap in the X direction (see Figure 8).

[0032] When manufacturing actuator 1, a coil assembly 13 is assembled from a coil 10, a first plate 11, a second plate 12, a first holder member 15, and a second holder member 16. Then, a movable body 5 is assembled to surround the coil assembly 13, and the movable body 5 and the coil assembly 13 are connected by a connecting member 4. After that, the coil assembly 13 and the movable body 5 are housed in case 2. The detailed configuration of case 2 and the positioning structure of the coil assembly 13 relative to case 2 will be described later.

[0033] (movable body) The movable body 5 includes a magnet 7 and a yoke 8. As shown in Figures 2 and 3, the magnet 7 faces the coil 10 in the Z direction. The coil 10 and the magnet 7 constitute a magnetic drive circuit 6. The movable body 5 includes a first magnet 71 and a second magnet 72 as the magnet 7. The first magnet 71 is located in the Z1 direction of the coil 10. The second magnet 72 is located in the Z2 direction of the coil 10. The first magnet 71 and the second magnet 72 are polarized in two in the X direction. As shown in Figure 3, when the movable body 5 and the support 3 are assembled, the first magnet 71 faces the long sides 10a and 10b of the coil 10 in the Z1 direction, and the second magnet 72 faces them in the Z2 direction.

[0034] The yoke 8 is made of a magnetic material. As shown in Figure 3, the yoke 8 has a first opposing portion 801 that faces the coil 10 from the Z1 direction and a second opposing portion 802 that faces the coil 10 from the Z2 direction. The first magnet 71 is fixed to the first opposing portion 801. The second magnet 72 is fixed to the second opposing portion 802. The yoke 8 also has a pair of connecting portions 803 that extend in the Z direction on both sides of the coil 10 in the X direction. The pair of connecting portions 803 connect the first opposing portion 801 and the second opposing portion 802.

[0035] When assembling the yoke 8, a pair of connecting plate portions 805 extending in the Z1 direction from both ends in the X direction of the second opposing portion 802 are press-fitted and fixed inside a pair of connecting plate portions 804 extending in the Z2 direction from both ends in the X direction of the first opposing portion 801. This forms a pair of connecting portions 803, and the yoke 8 is assembled into a shape that surrounds the outer periphery of the coil 10, the first plate 11, and the second plate 12.

[0036] As shown in Figures 4-6, the yoke 8 includes a pair of first rising portions 806 extending in the Z2 direction from both ends in the X direction of the first opposing portion 801, and a pair of second rising portions 807 extending in the Z1 direction from both ends in the X direction of the second opposing portion 802, on both sides in the Y direction of the pair of connecting portions 803.

[0037] As shown in Figures 3, 5, and 6, the yoke 8 comprises a first yoke 81 and a second yoke 82. The first yoke 81 is constructed by joining two members: a first inner member 83 that overlaps the coil 10 from the Z1 direction, and a first outer member 84 that overlaps the first inner member 83 from the Z1 direction. The second yoke 82 is constructed by joining two members: a second inner member 85 that overlaps the coil 10 from the Z1 direction, and a second outer member 86 that overlaps the second inner member 85 from the Z1 direction.

[0038] The first opposing portion 801 of the yoke 8 is constructed by stacking the first outer member 84 and the first inner member 83 in the Z direction. As shown in Figure 5, a pair of connecting plate portions 804 and each connecting plate portion 80 The four first rising portions 806 located on both sides of the 4 in the Y direction are provided on the first outer member 84. As shown in Figure 2, the first opposing portion 801 extends on both sides of the first magnet 71 in the Y direction and is connected to the first plate 11 via the first connector 9A.

[0039] The second opposing portion 802 of the yoke 8 is constructed by stacking the second outer member 86 and the second inner member 85 in the Z direction. As shown in Figure 6, the pair of connecting plate portions 805 and the four second rising portions 807 provided on both sides of each connecting plate portion 805 in the Y direction are provided on the second outer member 86. As shown in Figure 2, the second opposing portion 802 extends on both sides of the second magnet 72 in the Y direction and is connected to the second plate 12 via the second connector 9B.

[0040] (connector) As shown in Figure 2, the connector 4 comprises a first connector 9A and a second connector 9B. The first connector 9A and the second connector 9B are rectangular parallelepipeds that are elongated in the X direction. The first connector 9A is located on the Z1 side of the coil 10. The second connector 9B is located on the Z2 side of the coil 10. The first connector 9A is positioned at two locations on the Y1 and Y2 sides of the first magnet 71 and consists of two identical members. The second connector 9B is positioned at two locations on the Y1 and Y2 sides of the second magnet 72 and consists of two identical members. The first connector 9A and the second connector 9B each possess at least one of elastic and viscoelastic properties.

[0041] As described above, the first connector 9A is sandwiched between the first opposing portion 801 of the yoke 8 and the first plate 11 on both sides of the coil 10 in the Y direction. The first connector 9A is compressed in the Z direction between the first opposing portion 801 and the first plate 11. As described above, the second connector 9B is sandwiched between the second opposing portion 802 of the yoke 8 and the second plate 12 on both sides of the coil 10 in the Y direction. The second connector 9B is compressed in the Z direction between the second opposing portion 802 and the second plate 12.

[0042] In this embodiment, the first connector 9A and the second connector 9B are gel-like members made of silicone gel. Silicone gel is a viscoelastic material in which the spring constant when deformed in the stretching direction is about three times that when deformed in the shear direction. When a viscoelastic material deforms in a direction intersecting the thickness direction (shear direction), it is deformed in the direction of stretching due to tension, and therefore has deformation characteristics in which the linear component is larger than the nonlinear component. Furthermore, when compressed and deformed by being pressed in the thickness direction, it has stretching characteristics in which the nonlinear component is larger than the linear component, while when stretched by being pulled in the thickness direction, it has stretching characteristics in which the linear component is larger than the nonlinear component.

[0043] Alternatively, the first connector 9A and the second connector 9B may be made from various rubber materials such as natural rubber, diene rubber (e.g., styrene-butadiene rubber, isoprene rubber, butadiene rubber, chloroprene rubber, acrylonitrile-butadiene rubber, etc.), non-diene rubber (e.g., butyl rubber, ethylene-propylene rubber, ethylene-propylene-diene rubber, urethane rubber, silicone rubber, fluororubber, etc.), thermoplastic elastomers, and modified materials thereof.

[0044] (case) As shown in Figures 1-4, case 2 comprises a first case member 30 and a second case member 40 stacked in the Z direction. The first case member 30 is assembled to the coil assembly 13 from the Z1 direction. The second case member 40 is assembled to the coil assembly 13 and the first case member 30 from the Z2 direction.

[0045] The first case member 30 includes a substantially rectangular first end plate portion 31 facing the coil 10 from the Z1 direction. The first case member 30 also includes a first case first side plate portion 32 extending from the Y1 direction end of the first end plate portion 31 in the Z2 direction, and extending from the Y2 direction end of the first end plate portion 31 in the Z2 direction. The first case comprises a second side plate portion 33, a third side plate portion 34 extending in the Z2 direction from the X1 direction end of the first end plate portion 31, and a fourth side plate portion 35 extending in the Z2 direction from the X2 direction end of the first end plate portion 31.

[0046] The first end plate portion 31 has protruding portions that extend from the central part in the Y direction to both sides in the X direction. Therefore, the third side plate portion 34 and the fourth side plate portion 35 of the first case each have a central side plate portion 301 extending in the Z1 direction from the tip of the protruding portion of the first end plate portion 31, and side plate end portions 302 provided on both sides of the central side plate portion 301 in the Y direction, at positions shifted toward the center in the X direction from the central side plate portion 301. Both ends of the central side plate portion 301 in the Y direction are connected to a stepped portion that is bent at approximately a right angle toward the center in the X direction of the first case member 30, and the central side plate portion 301 and the side plate end portions 302 are connected via the stepped portion.

[0047] The second case member 40 includes a substantially rectangular second end plate portion 41 facing the coil 10 from the Z1 direction. The second case member 40 also includes a second case first side plate portion 42 extending in the Z1 direction from the Y1 direction end of the second end plate portion 41, a second case second side plate portion 43 extending in the Z1 direction from the Y2 direction end of the second end plate portion 41, a second case third side plate portion 44 extending in the Z1 direction from the X1 direction end of the second end plate portion 41, and a second case fourth side plate portion 45 extending in the Z1 direction from the X2 direction end of the second end plate portion 41.

[0048] The second end plate portion 41 has protruding portions that extend from the central part in the Y direction to both sides in the X direction. Therefore, the third side plate portion 44 and the fourth side plate portion 45 of the second case each have a central side plate portion 401 extending in the Z1 direction from the tip of the protruding portion of the second end plate portion 41, and side plate end portions 402 provided on both sides of the central side plate portion 401 in the Y direction, at positions shifted toward the center in the X direction from the central side plate portion 401. Both ends of the central side plate portion 401 in the Y direction are connected to a stepped portion that is bent at approximately a right angle toward the center in the X direction of the second case member 40, and the central side plate portion 401 and the side plate end portions 402 are connected via the stepped portion.

[0049] (Positioning structure of the case and coil holder) Figure 7 is a cross-sectional view of the actuator 1 cut at the positions of the first cut-up section 36 and the second cut-up section 37 (a cross-sectional view cut at position CC in Figure 1(a)). Figure 8 is an exploded perspective view of the first case member 30 and the coil assembly 13 viewed from the Z1 direction. As shown in Figures 1(b) and 4, the first case member 30 includes two first cut-up sections 36 located on the inside (Y2 side) of the first case first side plate section 32 and two second cut-up sections 37 located on the inside (Y1 side) of the first case second side plate section 33. The first cut-up sections 36 extend in the Z2 direction from the Y1 side edges of two openings 360 provided at both ends in the X direction at the Y1 side end of the first end plate section 31. The second cut-up portion 37 extends in the Z2 direction from the Y2-side edge of the two openings 370 provided at both ends in the X direction at the Y2-side end of the first end plate portion 31.

[0050] As shown in Figure 7, the first holder member 15 is positioned in the Y direction relative to the first case member 30 by the Z1 direction end of the first holder side plate portion 152 being sandwiched between the first case first side plate portion 32 and the first cut-out portion 36. In addition, the first holder member 15 is positioned in the Z direction relative to the first case member 30 by the Z1 direction tip of the first holder side plate portion 152 contacting the first end plate portion 31 from the Z1 direction.

[0051] As shown in Figure 8, the first holder member 15 is provided with a first positioning projection 154 that protrudes in the Z1 direction from the tip surface in the Z1 direction of the first holder side plate portion 152. The Y1 side end of the first end plate portion 31 is provided with a first positioning hole 38 that penetrates the midpoint between two openings 360. When the tip in the Z1 direction of the first holder side plate portion 152 is inserted between the first case first side plate portion 32 and the first cut-out portion 36, as shown in Figure 2, the first positioning projection 154 is The first holder member 15 is positioned so that it fits into the positioning hole 38. This positions the first holder member 15 in the X direction relative to the first case member 30.

[0052] Similarly, the second holder member 16 is positioned in the Y direction relative to the first case member 30 by the Z1 direction end of the second holder side plate portion 162 being sandwiched between the second side plate portion 33 of the first case and the second cut-out portion 37. In addition, the second holder member 16 is positioned in the Z direction relative to the first case member 30 by the Z1 direction tip of the second holder side plate portion 162 contacting the first end plate portion 31 from the Z1 direction.

[0053] As shown in Figure 8, the second holder member 16 is provided with a second positioning projection 164 that protrudes in the Z1 direction from the tip surface in the Z1 direction of the second holder side plate portion 162. The Y2 side end of the first end plate portion 31 is provided with a second positioning hole 39 that penetrates the midpoint between the two openings 370. When the tip in the Z1 direction of the second holder side plate portion 162 is inserted between the first case second side plate portion 33 and the second cut-out portion 37, the second holder member 16 is positioned so that the second positioning projection 164 fits into the second positioning hole 39, as shown in Figure 2. This positions the second holder member 16 in the X direction relative to the first case member 30.

[0054] When housing the coil assembly 13 and the movable body 5 in the case 2, the positioning structure described above positions the first holder member 15 on the first case member 30 and the second holder member 16 on the first case member 30. As a result, the two components constituting the coil holder 17 are positioned with respect to the first case member 30.

[0055] Figure 9 is a plan view of the actuator 1 with the second case member 40 removed, as seen from the Z2 direction. As shown in Figure 9, at the Y1 end of the first case member 30, the distance D1 in the X direction between the first case third side plate portion 34 and the first case fourth side plate portion 35, which define the external dimensions of the first case member 30 in the X direction, is greater than the width D2 in the X direction of the first holder side plate portion 152. In this embodiment, when the first holder side plate portion 152 is positioned at the center in the X direction of the first end plate portion 31 by fitting the first positioning projection 154 and the first positioning hole 38, a predetermined gap d is formed between the first holder side plate portion 152 and the first case third side plate portion 34, and between the first holder side plate portion 152 and the first case fourth side plate portion 35. Similarly, at the Y2-direction end of the first case member 30, a predetermined gap d is formed between the second holder side plate portion 162 and the first case third side plate portion 34, and between the second holder side plate portion 162 and the first case fourth side plate portion 35.

[0056] Thus, in this embodiment, the first holder side plate portion 152 and the second holder side plate portion 162 are not press-fitted between the third side plate portion 34 and the fourth side plate portion 35 of the first case, so there is little risk of deformation of the outer shape of the first case member 30 in the X direction when the first holder member 15 and the second holder member 16 are assembled. Furthermore, both the first holder side plate portion 152 and the second holder side plate portion 162 are precisely positioned using the cut-out portion provided on the inside of the first case member 30, with reference to the side plate portion in the Y direction of the first case member 30 (first side plate portion 32 of the first case, second side plate portion 33 of the first case). Furthermore, since there is little risk of deformation of the Y-direction side plate portion (first side plate portion 32 of the first case, second side plate portion 33 of the first case) of the first case member 30 during assembly, there is little risk of deformation of the Y-direction outer shape of the first case member 30 during assembly of the first holder member 15 and the second holder member 16.

[0057] (Positioning structure for the second case component) After assembling the coil assembly 13 and the movable body 5 to the first case member 30, the second case member 40 is placed over the first case member 30, the coil assembly 13, and the movable body 5 from the Z2 direction, as shown in Figures 2 and 7, the Z1 direction tips of the first holder side plate portion 152 and the second holder side plate portion 162 are aligned with the Y direction side plate portion of the second case member 40 (second case first side plate portion 42 It is inserted inside the second case (second side plate portion 43). Thus, the second case member 40 is positioned in the Y direction via the first holder member 15 and the second holder member 16.

[0058] Furthermore, as shown in Figure 3, the X-direction side plates of the second case member 40 (the third side plate portion 44 and the fourth side plate portion 45 of the second case) fit onto the outside of the X-direction side plates of the first case member 30 (the third side plate portion 34 and the fourth side plate portion 35 of the first case). As a result, the second case member 40 is positioned in the X direction relative to the first case member 30.

[0059] As shown in Figure 4, the Y-direction side plate portion of the first case member 30 (first case first side plate portion 32 and first case second side plate portion 33) has a height in the Z-direction that is lower than the X-direction side plate portion (first case third side plate portion 34 and first case fourth side plate portion 35). As shown in Figure 7, the first holder side plate portion 152 has a first receiving portion 156 that protrudes in the Y1 direction from the Y1-side surface, but the tip of the first case first side plate portion 32 is located closer to Z1 than the first receiving portion 156 and therefore does not interfere with the first receiving portion 156. Similarly, the second holder side plate portion 162 has a second receiving portion 166 that protrudes in the Y2 direction from the Y2-side surface, but the tip of the first case second side plate portion 33 is located closer to Z1 than the second receiving portion 166 and therefore does not interfere with the first receiving portion 156.

[0060] As shown in Figures 5 and 6, the first holder member 15 is provided with a first recess 155 formed by cutting out the central portion of the first holder side plate portion 152 in the X direction in the Z1 direction. One end of the power supply board 14 is pulled out from the first recess 155 to the Y1 side of the first holder side plate portion 152 and bent to the Z1 side. The first receiving portion 156 extends linearly in the X direction on both sides of the first recess 155. Similarly, the second holder member 16 is provided with a second recess 165 formed by cutting out the central portion of the second holder side plate portion 162 in the X direction in the Z1 direction. The second receiving portion 166 extends linearly in the X direction on both sides of the second recess 165.

[0061] When the second case member 40 is placed over the first case member 30, the coil assembly 13, and the movable body 5 from the Z2 direction, as shown in Figure 7, the Y-direction side plates of the second case member 40 (the first side plate portion 42 and the second side plate portion 43 of the second case) come into contact with the first receiving portion 156 and the second receiving portion 166, respectively, from the Z2 direction. As a result, the second case member 40 is positioned in the X direction relative to the first case member 30 via the resin first holder member 15 and the second holder member 16.

[0062] (First Stopper Section) When the first case member 30, the coil assembly 13, and the movable body 5 are assembled, as shown in Figure 7, the first cut-up portion 36 faces the first opposing portion 801 of the yoke 8 from the Y1 side, and the second cut-up portion 37 faces the first opposing portion 801 from the Y2 side. A predetermined gap W is formed between the Y1 side end face of the first opposing portion 801 and the first cut-up portion 36, and between the Y2 side end face of the first opposing portion 801 and the second cut-up portion 37. Therefore, the first cut-up portion 36 and the second cut-up portion 37 function as first stopper portions that restrict the range of motion of the movable body 5 in the Y direction.

[0063] (Second Stopper Division) As shown in Figure 9, the third side plate portion 34 of the first case faces the yoke 8 from the X1 side, and the fourth side plate portion 35 of the first case faces the yoke 8 from the X2 side. More specifically, the central portion 301 of the side plate faces the pair of connecting portions 803 located on the X-direction side of the central portion of the yoke 8 in the Y-direction from the X1 and X2 directions. Also, the end portions 302 of the side plate face the first rising portion 806 and the second rising portion 807 located on the X-direction side of the end of the yoke 8 in the Y1 direction, respectively, from the X1 and X2 directions. In this embodiment, the gap W1 in the X direction between the connecting portion 803 and the central portion 301 of the side plate is narrower than the gap W2 in the X direction between the first rising portion 806 and the second rising portion 807 and the end portion 302 of the side plate. The side plate end portion 302 functions as a second stopper portion that restricts the range of motion of the movable body 5 in the X direction within the case 2.

[0064] (Main effects and benefits of this form) As described above, the actuator 1 of this embodiment includes a movable body 5, a support body 3 comprising a metal case 2 and a resin coil holder 17 that house the movable body 5, and a connecting body 4 connected to the movable body 5 and the support body 3. The actuator 1 also includes a coil 10 held in the coil holder 17 and a magnet 7 facing the coil 10 in the Z direction, and has a magnetic drive circuit 6 that vibrates the movable body 5 in the X direction intersecting the Z direction with respect to the support body 3. The coil holder 17 consists of two parts, a first holder member 15 and a second holder member 16. The first holder member 15 has a first holder side plate portion 152 that extends in the Z direction in the Y1 direction relative to the coil 10. The case 2 includes a first case member 30 having a first end plate portion 31 facing the movable body 5 from the Z1 direction, and a second case member 40 having a second end plate portion 41 facing the movable body 5 from the Z2 direction. The first case member 30 includes a first case first side plate portion 32 extending in the Z2 direction from the Y1 direction end of the first end plate portion 31, and a first cut-up portion 36 cut out in the Z2 direction from the first end plate portion 31 in the Y2 direction of the first case first side plate portion 32. The Z1 direction end of the first holder side plate portion 152 is sandwiched between the first case first side plate portion 32 and the first cut-up portion 36.

[0065] Thus, in this embodiment, the case 2 and the first holder member 15 are positioned by sandwiching the side plate portion (first holder side plate portion 152) provided at the Y-direction end of the first holder member 15 between the side plate portion (first case first side plate portion 32) provided at the Y1-direction end of the case 2 and the first cut-out portion 36 located inside it. Therefore, play in the Y-direction of the first holder member 15 relative to the case 2 can be suppressed. Furthermore, since the first holder member 15 can be positioned with the side plate portion of the case 2 as a reference, the positional accuracy of the coil 10 in the Y-direction relative to the case 2 can be improved via the first holder member 15. In addition, since the first cut-out portion 36 provided inside the case 2 is used for positioning, deformation of the side plate portion of the case 2 (first case first side plate portion 32) associated with the positioning of the first holder member 15 can be suppressed. Therefore, a decrease in the accuracy of the external dimensions of the case 2 in the Y-direction can be suppressed.

[0066] In this embodiment, the first holder side plate portion 152 is provided with a first positioning projection 154 that protrudes in the Z direction, and the first end plate portion 31 is provided with a first positioning hole 38 into which the first positioning projection 154 fits. By fitting the protrusions and recesses in the Z direction in this way, the looseness of the first holder member 15 in the X direction relative to the case 2 can be suppressed, and the positional accuracy of the first holder member 15 in the X direction relative to the case 2 can be improved. In addition, since a gap in the X direction can be provided between the first holder side plate portion 152 and the case 2, a decrease in the accuracy of the external dimensions of the case 2 in the X direction can be suppressed.

[0067] In this embodiment, in addition to the positioning structure between case 2 and the first holder member 15, a positioning structure between case 2 and the second holder member 16 is provided. Specifically, the first case member 30 includes a first case second side plate portion 33 extending in the Z2 direction from the Y2 direction end of the first end plate portion 31, and a second cut-up portion 37 cut out in the Z2 direction from the first end plate portion 31 in the Y1 direction of the first case second side plate portion 33, and the Z1 direction end of the second holder side plate portion 162 is sandwiched between the first case second side plate portion 33 and the second cut-up portion 37.

[0068] Thus, in this embodiment, the first holder side plate portion 152 and the second holder side plate portion 162 are positioned by being sandwiched between the side plate portion of the case 2 and the cut-out portion provided inside it at both ends of the case 2 in the Y direction. Therefore, even when the coil holder 17 is divided into two members, it is possible to suppress the Y-direction play of the coil holder 17 relative to the case 2 and to improve the Y-direction positional accuracy of the coil 10 relative to the case 2. This can suppress the decrease in accuracy of the external dimensions in the Y direction.

[0069] Furthermore, by dividing the coil holder 17 into two parts in the Y direction, the portion covering both sides of the coil 10 in the X direction becomes unnecessary, thus reducing the external dimensions of the actuator 1 in the X direction. Alternatively, the coil 10 can be enlarged without increasing the external dimensions of the actuator 1, thereby increasing the thrust of the magnetic drive circuit 6 and generating larger vibrations.

[0070] In this embodiment, the second holder side plate portion 162 is provided with a second positioning projection 164 that protrudes in the Z direction, and the first end plate portion 31 is provided with a second positioning hole 39 into which the second positioning projection 164 fits. This suppresses play of the second holder member 16 in the X direction relative to the case 2 and improves the positional accuracy of the second holder member 16 in the X direction relative to the case 2. It also suppresses a decrease in the accuracy of the external dimensions of the case 2 in the X direction.

[0071] In this embodiment, openings 360 and 370 are formed in the first end plate portion 31 in order to provide a first cut-out portion 36 and a second cut-out portion 37 in the first case member 30. When assembling the first holder member 15 and the second holder side plate portion 162 to the first case member 30, the movable body 5, which is assembled to surround the coil assembly 13, is simultaneously housed in the first case member 30. At this time, a jig can be inserted into the inside of the first case member 30 through the openings 360 and 370 to position the movable body 5. Therefore, by using the openings 360 and 370 as working holes, the ease of assembly of the actuator 1 can be improved.

[0072] In this embodiment, the movable body 5 includes a yoke 8 that holds the magnet 7. The yoke 8 includes a first opposing portion 801 that faces the coil 10 from the Z1 direction, and a second opposing portion 802 that faces the coil 10 from the Z2 direction. The first magnet 71 is fixed to the first opposing portion 801, and the second magnet 72 is fixed to the second opposing portion 802. The first cut-up portion 36 and the second cut-up portion 37 face the first opposing portion 801 from both sides in the Y direction and function as first stopper portions that define the range of motion of the yoke 8 in the Y direction. As a result, when the movable body 5 tries to move a large amount in the Y direction different from the vibration direction due to an impact such as a fall, its movement can be restricted, so there is less risk of the movable body 5 moving excessively in the Y direction and damaging the actuator 1. In addition, the cut-up portion for positioning the coil holder 17 can also be used as a stopper portion in the Y direction, so the shape of the parts can be simplified.

[0073] In this embodiment, the first case member 30 includes a first case third side plate portion 34 extending in the Z2 direction from the X1 direction end of the first end plate portion 31, and a first case fourth side plate portion 35 extending in the Z2 direction from the X2 direction end of the first end plate portion 31. The yoke 8 includes a pair of connecting portions 803 extending in the Z direction on both sides of the coil 10 in the X direction to connect a first opposing portion 801 and a second opposing portion 802, and a pair of first rising portions 806 extending in the Z2 direction from both ends of the first opposing portion 801 in the X direction on both sides of the pair of connecting portions 803 in the Y direction. The first case third side plate portion 34 and the first case fourth side plate portion 35 include side plate end portions 302 arranged on both sides of the pair of first rising portions 806 in the X direction. The side plate end portions 302 function as second stopper portions that define the movable range of the yoke 8 in the X direction. This reduces the risk of the actuator 1 being damaged by excessive movement of the movable body 5 in the vibration direction (X direction) due to impacts such as drops. In addition, the first rising portion 806, which is provided to increase the weight of the yoke 8, can also be used as a stopper, thus simplifying the shape of the parts.

[0074] Even if the first rising portion 806 is not formed, both ends of the first opposing portion 801 in the X direction face the side plate end portion 302, so the side plate end portion 302 can function as a second stopper portion.

[0075] In this embodiment, the second case member 40 extends in the Z2 direction from the Y1 direction end of the second end plate portion 41. The second case comprises a first side plate portion 42 and a second side plate portion 43 extending in the Z2 direction from the Y2 direction end of the second end plate portion 41. The first holder side plate portion 152 includes a first receiving portion 156 that abuts the tip of the first side plate portion 42 of the second case from the Z2 direction. The second holder side plate portion 162 includes a second receiving portion 166 that abuts the tip of the second side plate portion 43 of the second case from the Z2 direction. In this embodiment, the first case member 30 and the second case member 40 are positioned in contact with the resin coil holder 17 in the Z direction, thereby improving the Z-direction positional accuracy of the first case member 30 and the second case member 40. Therefore, the accuracy of the external dimensions of the case 2 in the Z direction can be improved.

[0076] In this embodiment, the support 3 comprises a first metal plate 11 that overlaps the coil 10, the first coil holding portion 151, and the second coil holding portion 161 from the Z1 direction, and a second metal plate 12 that overlaps the coil 10, the first coil holding portion 151, and the second coil holding portion 161 from the Z2 direction. In this way, the coil 10 can be protected by the first plate 11 and the second plate 12, so there is little risk of the coil 10 being damaged by collision with the magnet 7. Furthermore, since the first holder member 15, the second holder member 16, and the coil 10 are held between the first plate 11 and the second plate 12, they can be handled as a coil assembly 13, so even if the coil holder 17 is divided into two members, the reduction in the ease of assembly of the actuator 1 can be suppressed.

[0077] In this embodiment, the connector includes a first connector 9A that connects the first opposing portion 801 and the first plate 11, and a second connector 9B that connects the second opposing portion 802 and the second plate 12. By arranging the connector 4 inside the yoke 8 and connecting the coil assembly 13 and the yoke 8 in this way, it is not necessary to secure space for the connector 4 in the gap between the case 2 and the yoke 8, so the dimensions of the actuator 1 in the Z direction can be reduced.

[0078] (modified version) (1) In the above configuration, the first holder side plate portion 152 and the second holder member 16 are provided with positioning protrusions, and the first end plate portion 31 is provided with a positioning hole. However, the arrangement of the positioning protrusions may be reversed. That is, one side member of the first holder side plate portion 152 and the first end plate portion 31 may be provided with a first positioning protrusion that protrudes in the Z direction, and the other side member of the first holder side plate portion 152 and the first end plate portion 31 may be provided with a first positioning hole into which the first positioning protrusion fits. Alternatively, one side member of the second holder side plate portion 162 and the first end plate portion 31 may be provided with a second positioning protrusion that protrudes in the Z direction, and the other side member of the second holder side plate portion 162 and the first end plate portion 31 may be provided with a second positioning hole into which the second positioning protrusion fits.

[0079] (2) The above configuration involves dividing the coil holder 17 into two parts in the Y direction and constructing it as two components, but the coil holder 17 can also be constructed as a single component. For example, the coil holder 17 can be configured such that a coil placement hole is provided in the plate portion connecting the first holder side plate portion 152 and the second holder side plate portion 162. In this case, either one or both of the first holder side plate portion 152 and the second holder side plate portion 162 can be positioned by being sandwiched between the cut-out portion formed on the first end plate portion 31 and the Y-direction side plate portion of the first case member 30.

[0080] (3) In the above embodiment, the magnet 7 is provided with a first magnet 71 and a second magnet 72, but it may also be configured to provide only one of the first magnet 71 or the second magnet 72.

[0081] (4) In the above embodiment, the connector 4 is provided with a first connector 9A and a second connector 9B, but it is also possible to have a configuration in which only one of the first connector 9A and the second connector 9B is provided.

[0082] (5) In the above configuration, the yoke 8 has a first yoke 81 and a second yoke 82, each with an inner part Although it is constructed by laminating the material and the outer member, the first yoke 81 and the second yoke 82 can each be constructed using only the outer member. [Explanation of Symbols]

[0083] 1...Actuator, 2...Case, 3...Support, 4...Connector, 5...Movable body, 6...Magnetic drive circuit, 7...Magnet, 8...Yoke, 9A...First connector, 9B...Second connector, 10...Coil, 10a, 10b...Long side, 10c...Center hole, 11...First plate, 12...First plate, 13...Coil assembly, 14...Power supply board, 15...First holder member, 16...First holder member, 17...Coil holder, 30...First case member, 31...First end plate, 3 2...First case first side plate section, 33...First case second side plate section, 34...First case third side plate section, 35...First case fourth side plate section, 36...First cut-out section, 37...Second cut-out section, 38...First positioning hole, 39...Second positioning hole, 40...Second case member, 41...Second end plate section, 42...Second case first side plate section, 43...Second case second side plate section, 44...Second case third side plate section, 45...Second case fourth side plate section, 71...First magnet, 72...First 2 magnets, 81...first yoke, 82...first yoke, 83...first inner member, 84...first outer member, 85...second inner member, 86...second outer member, 111...first plate section, 112...first bent section, 113...first fixing section, 121...second plate section, 122...second bent section, 123...second fixing section, 151...first coil holding section, 152...first holder side plate section, 153...claw section, 154...first positioning projection, 155...first recess, 156...first receiving section, 161 ...Second coil holding part, 162...Second holder side plate part, 163...Claw part, 164...Second positioning projection part, 165...Second recess part, 166...Second receiving part, 301...Center part of side plate, 302...End part of side plate, 360...Opening, 370...Opening, 401...Center part of side plate, 402...End part of side plate, 801...First opposing part, 802...Second opposing part, 803...Connecting part, 804...Connecting plate part, 805...Connecting plate part, 806...First rising part, 807...Second rising part

Claims

1. Movable body and, A support comprising a metal case for housing the movable body and a resin coil holder, The movable body and the connecting body connected to the support, The coil holder includes a coil and a magnet facing the coil in a first direction, and the magnetic drive circuit vibrates the movable body in a second direction intersecting the first direction with respect to the support, When the third direction is defined as the direction that intersects both the first and second directions, The coil holder includes a first holder side plate portion that extends in the first direction on one side of the third direction relative to the coil, The case comprises a first case member having a first end plate portion facing the movable body from one side in the first direction, and a second case member having a second end plate portion facing the movable body from the other side in the first direction. The first case member comprises a first case side plate portion extending from one end of the first end plate portion in the third direction to the other end in the first direction, and a first cut-out portion cut out from the first end plate portion to the other end in the first direction on the other end of the first case side plate portion in the third direction. The end of the first holder side plate portion in the first direction is sandwiched between the first case first side plate portion and the first cut-out portion. The coil holder is, A first holder member comprising a first coil holding portion positioned on one side of the coil in the third direction, and a first holder side plate portion extending in the first direction from one end of the first coil holding portion in the third direction, The device comprises a second coil holding portion positioned on the other side of the third direction relative to the coil, and a second holder member having a second holder side plate portion extending in the first direction from the other end of the second coil holding portion in the third direction, The coil holder is divided into two members: the first holder member and the second holder member. The first case member comprises a first case second side plate portion extending from the other end of the first end plate portion in the third direction to the other side in the first direction, and a second cut-out portion cut out from the first end plate portion to the other side in the first direction on one side of the first case second side plate portion in the third direction. Equipped with a section, The actuator is characterized in that one end of the second holder side plate portion in the first direction is sandwiched between the second side plate portion of the first case and the second cut-up portion.

2. The first holder side plate portion and the first end plate portion, one side member, are provided with a first positioning projection that protrudes in the first direction. The actuator according to claim 1, characterized in that the other side member of the first holder side plate portion and the first end plate portion is provided with a first positioning hole into which the first positioning projection portion fits.

3. The second holder side plate portion and the first end plate portion, one side member, are provided with a second positioning projection that protrudes in the first direction. The actuator according to claim 1 or 2, characterized in that the other side member of the second holder side plate portion and the first end plate portion is provided with a second positioning hole into which the second positioning projection portion fits.

4. The movable body comprises a yoke for holding the magnet, The yoke comprises a first opposing portion facing the coil from one side in the first direction, and a second opposing portion facing the coil from the other side in the first direction, and the magnet is fixed to at least one of the first opposing portion and the second opposing portion. The actuator according to any one of claims 1 to 3, characterized in that the first cutting portion and the second cutting portion are provided with a first stopper portion that faces the first opposing portion from both sides in the third direction and defines the range of motion of the yoke in the third direction.

5. The first case member comprises a first case third side plate portion extending from one end of the first end plate portion in the second direction to the other end in the first direction, and a first case fourth side plate portion extending from the other end of the first end plate portion in the second direction to the other end in the first direction. The yoke comprises a pair of connecting portions extending in the first direction on both sides of the coil in the second direction to connect the first opposing portion and the second opposing portion, and a pair of first rising portions extending from both ends of the first opposing portion in the second direction to the other side in the first direction on both sides of the pair of connecting portions in the third direction. The actuator according to claim 4, characterized in that the third side plate portion of the first case and the fourth side plate portion of the first case are provided with second stopper portions arranged on both sides of the pair of first rising portions in the second direction and defining the range of motion of the yoke in the second direction.

6. The aforementioned support is A first metal plate overlaps the coil, the first coil holder, and the second coil holder from one side in the first direction, The coil, the first coil holder, and the second coil holder are each provided with a second metal plate that overlaps them from the other side in the first direction. The actuator according to claim 4 or 5, characterized in that the connector comprises a first connector that connects the first opposing portion and the first plate, and a second connector that connects the second opposing portion and the second plate.

7. The second case member comprises a second case first side plate portion extending from one end of the second end plate portion in the third direction to the other end in the first direction, and a second case second side plate portion extending from the other end of the second end plate portion in the third direction to the other end in the first direction. The first holder side plate portion is provided with a first receiving portion to which the tip of the first side plate portion of the second case abuts from the other side in the first direction, The actuator according to any one of claims 1 to 6, characterized in that the second holder side plate portion is provided with a second receiving portion to which the tip of the second side plate portion of the second case abuts from the other side in the first direction.

Images