JP2022032149A - Actuator and manufacturing method thereof - Google Patents

Abstract

To prevent air bubbles from growing in the inside of a gel-like member connecting a moving body and a support or a joint surface, and to improve the productivity of the gel-like member.SOLUTION: An actuator 1 connects a support 2 and a moving body 3 with a first connection body 11 and a second connection body 12. The first connection body 11 and the second connection body 12 are gel-like members. The first connection body 11 is manufactured by filling a gel material G into a first inner frame member 36 and a first outer frame member 51 and curing it. When filling the gel material G in a space S between the first inner frame member 36 and the first outer member 51, the first inner frame member 36 and the first outer frame member 51 are pressed against a cushion material 92 disposed on a bottom surface 91 of a manufacturing jig 90A and are closely contacted with the cushion material 92, thereby eliminating a space between the first inner frame 36 and the first outer frame member 51, and the manufacturing jig 90A.SELECTED DRAWING: Figure 4

Description

The present invention relates to an actuator that moves a movable body relative to a support and a method for manufacturing the same.

Some actuators are provided with a support and a movable body, a magnetic drive mechanism that vibrates the movable body with respect to the support, and the movable body and the support are connected by a gel-like member having elasticity and viscoelasticity. .. Patent Document 1 discloses an actuator in which a movable body is arranged inside a rectangular parallelepiped cover and the movable body is vibrated in the longitudinal direction of the cover. The movable body comprises a yoke to which a magnet is fixed, and the support includes a holder for holding the coil and a cover for accommodating the movable body. In the gel-like member, one surface in the thickness direction is adhered to the yoke, and the other surface is adhered to the cover.

Japanese Unexamined Patent Publication No. 2019-13086

The present inventors have proposed an actuator in which a movable body is housed inside a cylindrical case and the movable body is vibrated in the axial direction. The movable body includes a support shaft extending in the axial direction at the center of the case, and both ends of the support shaft in the axial direction are connected to the case via a cylindrical gel-like member. The cylindrical gel-like member is arranged between the tubular inner frame member and the outer frame member, and connects the inner frame member and the outer frame member. The inner frame member is fixed to the support shaft which is a part on the movable body side, and the outer frame member is fixed to the case which is a part on the support side.

The gel-like member can be manufactured by a method (casting) in which a gel material is injected between the inner frame member and the outer frame member and cured. Here, when the gel-like member is manufactured by casting, the gel material is injected by fitting the inner frame member and the outer frame member into the manufacturing jig so as to be coaxially positioned. At this time, if there is a gap between the inner frame member and the outer frame member and the bottom surface of the manufacturing jig, when the gel material is injected, the gel material invades the gap and the air in the gap moves. , There is a possibility that air bubbles may grow on the joint surface between the gel-like member and another member or inside the gel-like member.

Further, when the gel-like member is removed from the manufacturing jig after the gel material is cured, the gel-like member cannot be easily removed if it is in close contact with the bottom surface of the manufacturing jig. Further, the gel protruding into the gap between the manufacturing jig and the inner frame member and the outer frame member must be removed from the manufacturing jig after mold release. Therefore, there is a problem that the productivity of the gel-like member is low because it takes time and effort to release the mold and clean the jig.

In view of the above problems, the subject of the present invention is that in an actuator that connects a movable body and a support using a gel-like member manufactured by casting, bubbles grow inside the gel-like member or at a joint surface. The purpose is to prevent this from happening and to improve the productivity of the gel-like member.

In order to solve the above problems, the method for manufacturing an actuator according to the present invention comprises providing a support and a movable body, a gel-like member connected to the support and the movable body, and the movable body to the support. A method for manufacturing an actuator having a magnetic drive mechanism for relative movement, wherein a gel-like member manufacturing step for manufacturing the gel-like member and an assembly step for connecting the support and the movable body by the gel-like member. In the gel-like member manufacturing process, a cushioning material is placed on the bottom surface of the manufacturing jig, and the inner frame member and the outer frame member surrounding the outer peripheral side of the inner frame member are attached to the manufacturing jig. When positioning the gel, the inner frame member and the outer frame member are pressed toward the bottom surface to be brought into close contact with the cushion material, and the gap between the inner frame member and the outer frame member is filled with the gel material to form the gel. By curing the material, the gel-like member is formed, the gel-like member is connected to the inner frame member and the outer frame member, and the gel-like member is manufactured together with the inner frame member and the outer frame member. It is characterized by being removed from the gel.

According to the present invention, when filling the gel material between the inner frame member and the outer frame member, the manufacturing jig does not directly abut the inner frame member and the outer frame member on the bottom surface of the manufacturing jig. Positioning on the manufacturing jig via the cushioning material placed on the bottom surface of the. By sandwiching the cushion material between the inner frame member and the outer frame member and the manufacturing jig in this way, it is possible to eliminate the gap between the inner frame member and the outer frame member and the manufacturing jig. Therefore, it is possible to prevent air from moving from the gap during filling of the gel material and growing bubbles inside the gel-like member or at the joint surface between the gel-like member and the inner frame member and the outer frame member. In addition, since the gel-like member does not come into direct contact with the manufacturing jig, mold release is easy, and the gel material can be prevented from protruding into the gap between the manufacturing jig and the inner frame member and the outer frame member, so that the mold can be released. There is no need to remove the gel that has squeezed out later. Therefore, the labor of mold release and jig cleaning can be reduced, and the productivity of the gel-like member can be improved.

In the present invention, it is preferable that a release film is laminated on the cushion material arranged on the bottom surface, and the inner frame member and the outer frame member are brought into close contact with the cushion via the release film. By doing so, when the gel-like member is released from the manufacturing jig, it is easily released from the release film, so that the mold can be easily released. Therefore, the productivity of the gel-like member can be improved.

In the present invention, the inner frame member and the outer frame member are held by the pressing jig, and the pressing jig is pressed toward the bottom surface to cushion the inner frame member and the outer frame member. It is preferable to make it adhere to the material. By doing so, the inner frame member and the outer frame member can be easily and accurately positioned. Further, since the manufacturing jig and the pressing jig can be sandwiched and fixed by a clamp or the like, the inner frame member and the outer frame member can be held in close contact with the cushion material. Therefore, when the gel material is filled, it is possible to reduce the possibility that the inner frame member and the outer frame member are separated from the cushion material to form a gap.

In the present invention, an adhesive auxiliary is applied to the outer peripheral surface of the inner frame member and the inner peripheral surface of the outer frame member, and the adhesive auxiliary is reacted with the gel material to cause the outer peripheral surface of the inner frame member and the outer peripheral surface of the inner frame member. It is preferable to fix the gel-like member to the inner peripheral surface of the outer frame member. For example, a primer can be used as the adhesive aid. By doing so, it is possible to increase the fixing strength of the gel-like member to the inner frame member and the outer frame member.

Next, the actuator according to the present invention includes a support and a movable body, a gel-like member connected to the support and the movable body, a magnet, and a coil, and the movable body is attached to the support. It has a magnetic drive mechanism that moves relative to each other, and the movable body is fixed to a support shaft that supports one of the magnet and the coil on the inner peripheral side of the support, and to the support shaft. The support includes an inner frame member, the support includes an outer frame member that is radially opposed to the inner frame member, and a tubular case that surrounds the outer peripheral side of the outer frame member, and the gel-like member is the inner frame member. The gel-like member is arranged in the gap between the frame member and the outer frame member, and the gel-like member is a first gel end surface facing one side in the central axis direction of the front inner frame member and the outer frame member, and the center axis direction. The second gel end face facing the other side is provided, and the first gel end face and the second gel end face are concave surfaces.

According to the present invention, the gel-like member arranged between the inner frame member and the outer frame member has a first gel end face facing one side in the central axis direction and a second gel-like member facing the other side in the center axis direction. All gel end faces are concave. When a gel-like member is manufactured by casting, the surface (liquid level) of the filled gel material becomes concave due to surface tension. In addition, when a gel-like member is manufactured by casting, if a cushion material is placed on the bottom surface of the manufacturing jig and the inner frame member and the outer frame member are pressed against the cushion material, the cushion material is filled in the gap where the gel material is filled. Swells. Therefore, in the gel-like member, the surface in contact with the cushion material is concave. As described above, by using the cushioning material at the time of manufacturing by casting, it is possible to prevent air from entering and prevent the growth of air bubbles. Further, it is not necessary to remove the gel protruding into the gap after the mold is released, and the gel-like member does not directly adhere to the manufacturing jig, so that the mold can be easily released. Therefore, the productivity of the gel-like member can be increased.

According to the present invention, when filling the gel material between the inner frame member and the outer frame member, the manufacturing jig does not directly abut the inner frame member and the outer frame member on the bottom surface of the manufacturing jig. Positioning on the manufacturing jig via the cushioning material placed on the bottom surface of the. By sandwiching the cushion material between the inner frame member and the outer frame member and the manufacturing jig in this way, it is possible to eliminate the gap between the inner frame member and the outer frame member and the manufacturing jig. Therefore, it is possible to prevent air from moving from the gap during filling of the gel material and growing bubbles inside the gel-like member or at the joint surface between the gel-like member and the inner frame member and the outer frame member. In addition, since the gel-like member does not directly adhere to the manufacturing jig, mold release is easy, and the gel material can be prevented from protruding into the gap between the manufacturing jig and the inner frame member and the outer frame member, so that the mold can be released. There is no need to remove the gel that has squeezed out later. Therefore, the labor of mold release and jig cleaning can be reduced, and the productivity of the gel-like member can be improved.

It is a perspective view of the actuator which concerns on embodiment of this invention. It is an exploded perspective view of the actuator shown in FIG. It is sectional drawing (AA sectional drawing of FIG. 1) of the actuator shown in FIG. It is explanatory drawing of the manufacturing method of a gel-like member.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the direction in which the central axis of the movable body 3 extends is the axis L direction, one side in the axis L direction is L1, and the other side in the axis L direction is L2. In the actuator 1 to which the present invention is applied, the movable body 3 vibrates in the axis L direction with respect to the support body 2.

In the embodiment described below, the magnetic drive mechanism 6 that vibrates the movable body 3 with respect to the support body 2 includes a magnet 61 arranged on the movable body 3 and a coil 62 arranged on the support body 2. However, in the present invention, a configuration in which the arrangement of the magnet 61 and the coil 62 is reversed may be adopted. That is, the magnetic drive mechanism 6 may include a coil 62 arranged on the movable body 3 and a magnet 61 arranged on the support 2.

(overall structure)
FIG. 1 is a perspective view of the actuator 1 according to the embodiment of the present invention. FIG. 2 is an exploded perspective view of the actuator 1 shown in FIG. FIG. 3 is a cross-sectional view of the actuator 1 shown in FIG. 1, which is a cross-sectional view cut at the position AA of FIG. The actuator 1 includes a support 2, a movable body 3, a connecting body 10 connected to the support 2 and the movable body 3, and a magnetic drive mechanism 6 for moving the movable body 3 relative to the support body 2. .. The connector 10 comprises at least one of elastic and viscoelastic. The magnetic drive mechanism 6 includes a magnet 61 arranged on the movable body 3 and a coil 62 arranged on the support body 2, and moves the movable body 3 relative to the support body 2 in the axis L direction. As shown in FIG. 3, the movable body 3 is connected to the support 2 via the connecting body 10 at each position of the end portion of the one side L1 in the axis L direction and the end portion of the other side L2 in the axis L direction. Will be done.

(Support)
The support 2 includes a tubular case 20, a first lid member 21 that closes the opening of the case 20 on one side L1 in the axis L direction, and a second lid that closes the opening of the case 20 on the other side L2 in the axis L direction. It has a member 22 and a coil holder 4 arranged between the first lid member 21 and the second lid member 22 on the inner peripheral side of the case 20. In this embodiment, the case 20, the first lid member 21, the second lid member 22, and the coil holder 4 are made of resin. Further, the support 2 is inside the case 20 at a position separated from the first outer frame member 51 fitted on the inner peripheral side of the coil holder 4 and the other side L2 in the axis L direction with respect to the first outer frame member 51. It has a second outer frame member 52 that fits on the peripheral side. The first outer frame member 51 and the second outer frame member 52 have the same shape and are arranged in opposite directions in the axis L direction.

(Connector)
The connecting body 10 includes an annular first connecting body 11 joined to the inner peripheral surface of the first outer frame member 51 and an annular second connecting body 12 joined to the inner peripheral surface of the second outer frame member 52. Be prepared. The first connecting body 11 is arranged on one end side of the movable body 3 in the axis L direction (that is, the vibration direction of the movable body), and the second connecting body 12 is arranged on the other end side of the movable body 3 in the axis L direction. .. The first connecting body 11 and the second connecting body 12 have the same shape and are arranged in opposite directions in the axis L direction.

The first connecting body 11 and the second connecting body 12 are gel-like members, and are joined to the first outer frame member 51 and the second outer frame member 52 by the adhesiveness of the gel-like member itself. The first connecting body 11 and the second connecting body 12 are made of, for example, a silicone gel having a needle insertion degree of 90 degrees to 110 degrees. In this embodiment, the first connecting body 11 is connected to the support 2 by press-fitting the first outer frame member 51 into the coil holder 4 and fixing the first outer frame member 51. Further, the second connecting body 12 is connected to the support 2 by press-fitting the second outer frame member 52 into the case 20 and fixing the second outer frame member 52.

(Coil holder)
As shown in FIG. 2, the coil holder 4 includes an annular first outer frame member fixing portion 41 and a body portion 42 protruding from the first outer frame member fixing portion 41 to the other side L2 in the axis L direction. A coil 62 is arranged around the body portion 42. The end of the coil wire 63 drawn out from the coil 62 is entwined with two terminal pins 64 protruding radially outward from the first outer frame member fixing portion 41 of the coil holder 4. As shown in FIG. 1, the terminal pin 64 projects to the outside of the case 20 and is connected to the wiring board 7.

As shown in FIG. 3, the coil holder 4 includes a first stage portion 44 that positions the first outer frame member 51 in the axis L direction. The first outer frame member fixing portion 41 surrounds the outer peripheral side of the first outer frame member 51. The inner peripheral surface of the first outer frame member fixing portion 41 is provided with a first recess 43 recessed on the other side L2 in the axis L direction, and the first outer frame member 51 is press-fitted into the first recess 43. The first step portion 44 is provided at the end of the other side L2 of the first recess 43 in the axis L direction. In this embodiment, the annular step portion 511 formed on the outer peripheral surface of the first outer frame member 51 abuts on the first step portion 44 in the axis L direction.

(Case)
The case 20 includes a cylindrical case body 24 and a second outer frame member fixing portion 25 arranged on the inner peripheral side of the case body 24. As shown in FIG. 2, the second outer frame member fixing portion 25 projects from the inner peripheral surface of the case main body 24 toward the inner peripheral side, and is integrally molded with the case main body 24. As shown in FIGS. 3 and 4, the second outer frame member fixing portion 25 is arranged at a position separated from the coil holder 4 on the other side L2 in the axis L direction.

The case 20 includes a second step portion 45 that positions the second outer frame member 52 in the L direction of the axis.
As shown in FIG. 3, the inner peripheral surface of the second outer frame member fixing portion 25 is provided with a second recess 46 recessed on one side L1 in the axis L direction, and the second outer frame member 52 has a second recess. It is press-fitted into 46. The second step portion 45 is provided at the end portion of the second recess 46 on one side L1 in the axis L direction. In this embodiment, the annular step portion 521 formed on the outer peripheral surface of the second outer frame member 52 abuts on the second step portion 45 in the axis L direction.

Further, the case 20 includes a third stage portion 47 for positioning the coil holder 4 in the axis L direction. As shown in FIG. 3, the third step portion 47 is formed on the inner peripheral surface of the case main body 24. A plurality of groove portions 29 extending in the axis L direction are formed on the inner peripheral surface of the case main body 24, and a third step portion 47 is formed at the end of each groove portion 29 on the other side L2 in the axis L direction. On the other hand, as shown in FIGS. 2 and 3, the coil holder 4 includes a plurality of convex portions 49 protruding from the outer peripheral surface of the first outer frame member fixing portion 41. When assembling the support 2, each convex portion 49 of the coil holder 4 is fitted into each groove portion 29 of the case body 24 from one side L1 in the axis L direction, and abuts on the third step portion 47 in the axis L direction. .. As a result, the coil holder 4 is press-fitted into the case body 24 and fixed, and the coil holder 4 is positioned in the axis L direction.

(Cover member)
As shown in FIG. 3, the first lid member 21 is fixed to the case main body 24 from one side L1 in the axis L direction of the first outer frame member fixing portion 41 provided in the coil holder 4. Further, the second lid member 22 is fixed to the case main body 24 from the other side L2 in the axis L direction of the second outer frame member fixing portion 25. As shown in FIG. 2, the first lid member 21 and the second lid member 22 have a circular lid portion 26 when viewed from the axis L direction, and a plurality of lid portions 26 arranged at equal intervals on the outer peripheral edge of the lid portion 26, respectively. A locking portion 27 is provided. In this embodiment, the first lid member 21 and the second lid member 22 each include three locking portions 27. The locking portion 27 is a claw portion extending in an inclined direction extending from the lid portion 26 toward the outer peripheral side.

The locking portion 27 is elastically deformed in the radial direction and pushed together with the lid portion 26 toward the inner peripheral side of the case body 24. The case 20 includes a regulating unit 28 that regulates the locking portion 27 from coming off the inside of the case 20. The regulating portion 28 is a convex portion that protrudes from the end portion of the case main body 24 toward the inner peripheral side. As shown in FIGS. 1 and 2, the regulating portions 28 are arranged at three locations at equal intervals at the ends of one side L1 and the other side L2 in the axis L direction of the case main body 24, respectively. The restricting portion 28 abuts on the tip of the locking portion 27 in the L direction of the axis.

The first lid member 21 is fixed to the case 20 by using a locking structure by the locking portion 27 and the regulating portion 28, fixing with an adhesive, and welding in combination. After curing, the adhesive is applied so as to serve as a sealing material that seals the gap between the end of L1 on one side of the case 20 and the first lid member 21. Therefore, in the support 2 after assembly, the gap between the first lid member 21 and the case 20 is sealed with an adhesive (not shown).

The first lid member 21 is fixed to the coil holder 4 by welding, and is fixed to the case 20 via the coil holder 4. As shown in FIGS. 2 and 3, the first lid member 21 includes a plurality of welding convex portions 210 projecting from the lid portion 26 to the other side L2 in the axis L direction. On the other hand, as shown in FIG. 3, the coil holder 4 includes a plurality of welding recesses 410 facing the lid portion 26 in the L direction of the axis. In this embodiment, the welding protrusion 210 and the welding recess 410 are arranged at three positions at equal intervals in the circumferential direction. When the first lid member 21 is fixed to the case 20, as shown in FIG. 3, each welding convex portion 210 is welded to the welding concave portion 410 of the coil holder.

Similar to the first lid member 21, the second lid member 22 is fixed to the case 20 by using a locking structure by the locking portion 27 and the regulating portion 28, fixing with an adhesive, and welding. After curing, the adhesive is applied so as to serve as a sealing material for sealing the gap between the end portion of the other side L2 of the case 20 and the second lid member 22. Therefore, in the support 2 after assembly, the gap between the second lid member 22 and the case 20 is sealed with an adhesive (not shown).

The second lid member 22 is fixed to the second outer frame member fixing portion 25 of the case 20 by welding. As shown in FIGS. 2 and 3, the second lid member 22 includes a plurality of welding convex portions 220 protruding from the lid portion 26 on one side L1 in the axis L direction. On the other hand, the second outer frame member fixing portion 25 includes a plurality of welding holes 250 facing the lid portion 26 in the L direction of the axis. In this embodiment, the welding convex portions 220 and the welding holes 250 are arranged at three positions at equal intervals in the circumferential direction. When the second lid member 22 is fixed to the case 20, as shown in FIG. 3, each welding convex portion 220 is welded to the welding hole 250 of the second outer frame member fixing portion 25.

As shown in FIG. 2, the first outer frame member fixing portion 41 of the coil holder 4 is a groove portion in which a portion overlapping with the three regulation portions 28 provided on the case main body 24 in the L direction of the axis is cut out on the inner peripheral side. 48 is provided. Therefore, when the coil holder 4 is inserted into the case main body 24, it is possible to prevent the first outer frame member fixing portion 41 and the restricting portion 28 from interfering with each other.

(Wiring drawer)
As shown in FIG. 1, the support 2 includes a wiring lead-out portion 60 for pulling out a terminal pin 64 in which a coil wire 63 drawn out from a coil 62 of a magnetic drive mechanism 6 is entwined. The wiring lead-out portion 60 includes a notch portion 65 in which the edge of one side L1 in the axis L direction of the case 20 is cut out on the other side L2 in the axis L direction, and a part of the outer peripheral edge of the first lid member 21 in the circumferential direction. It is a gap provided between the cover 66 and the cover 66 extending from L2 on the other side in the L direction of the axis.

The first outer frame member fixing portion 41 of the coil holder 4 is arranged on the inner peripheral side of the notch portion 65. In this embodiment, two terminal pins 64 extending from the first outer frame member fixing portion 41 to the outer peripheral side are arranged in the wiring lead-out portion 60. A coil wire 63 drawn from the coil 62 is entwined at the base of each terminal pin 64.

The case 20 includes a substrate fixing portion 69 formed on the other side L2 of the notch portion 65. In the wiring lead-out portion 60, an end portion of the wiring board 7 fixed to the substrate fixing portion 69 is arranged. The terminal pin 64 is positioned in the holding groove 71 provided on the edge of the wiring board 7, and is electrically connected to the land formed on the edge of the holding groove 71. A lead wire 8 for feeding power to the coil 62 is connected to the wiring board 7.

(Movable body)
As shown in FIGS. 2 and 3, the movable body 3 has a support shaft 30 extending in the axis L direction at the radial center of the support 2. A magnet 61 and a third yoke 35 are fixed to the support shaft 30 by a cylindrical first inner frame member 36 and a tubular second inner frame member 37. The support shaft 30 is a metal round bar. The first inner frame member 36 and the second inner frame member 37 are cylindrical bodies made of metal, and the first inner frame member 36 and the second inner frame member 37 are provided with circular through holes. The first inner frame member 36 and the second inner frame member 37 have the same shape and are arranged in opposite directions in the axis L direction.

The first inner frame member 36 faces the first outer frame member 51 in the radial direction, and the first connecting body 11 is arranged between the first inner frame member 36 and the first outer frame member 51. Further, the second inner frame member 37 faces the second outer frame member 52 in the radial direction, and the second connecting body 12 is arranged between the second inner frame member 37 and the second outer frame member 52. As described above, the first connecting body 11 and the second connecting body 12 are gel-like members, and the first connecting body 11 is joined to the first inner frame member 36 by the adhesiveness of the gel-like member itself, and the second The connecting body 12 is joined to the second inner frame member 37. By press-fitting and fixing the support shaft 30 to the first inner frame member 36 and the second inner frame member 37, the first connecting body 11 and the second connecting body 12 are connected to the movable body 3.

The magnet 61 is provided with a shaft hole 610 through which the support shaft 30 penetrates, and is fixed at substantially the center of the support shaft 30 in the axis L direction. The third yoke 35 includes a first yoke 31 that overlaps the magnet 61 on one side L1 in the axis L direction, and a second yoke 32 that overlaps the magnet 61 on the other side L2 in the axis L direction. The first yoke 31 has a disk shape provided with a shaft hole 310 through which the support shaft 30 penetrates, and the magnet 61 and the first yoke 31 have the same outer diameter. The second yoke 32 is composed of two members, a cup-shaped first magnetic member 33 and a disk-shaped second magnetic member 34. The first magnetic member 33 has a circular end plate portion 331 provided with a shaft hole 330 through which the support shaft 30 penetrates, and a cylindrical portion 332 extending from the outer edge of the end plate portion 331 to one side L1 in the axis L direction. .. In this embodiment, the end plate portion 331 of the first magnetic member 33 is fixed to the end surface of the other side L2 in the axis L direction of the magnet 61. The second magnetic member 34 includes a shaft hole 340 through which the support shaft 30 penetrates, and is fixed to the end plate portion 331 of the first magnetic member 33 from the side opposite to the magnet 61.

In the movable body 3, the support shaft 30 is passed through the shaft holes 310, 610, 330, and 340 of the members constituting the magnet 61 and the third yoke 35, and the magnet 61 and the third yoke 35 are oriented in the axis L direction. The first inner frame member 36 and the second inner frame member 37 are fixed to the support shaft 30 on both sides. As a result, the first inner frame member 36 supports the magnet 61 and the third yoke 35 from one side L1 in the axis L direction, and the second inner frame member 37 supports the magnet 61 and the third yoke 35 from the other side L2 in the axis L direction. As a result of supporting 35, the magnet 61 and the third yoke 35 are fixed to the support shaft 30.

(Manufacturing method of connector)
In the first connecting body 11, the first outer frame member 51 and the first inner frame member 36 are joined at the time of molding. Similarly, in the second connecting body 12, the second outer frame member 52 and the second inner frame member 37 are joined at the time of molding. Therefore, when assembling the actuator 1, the support 2 and the movable body 3 can be connected without performing the step of adhering the gel-like member.

FIG. 4 is an explanatory diagram of a manufacturing method of the connecting body 10. Hereinafter, a method of manufacturing the first connecting body 11 will be described with reference to FIG. The manufacturing jig 90A includes a bottom surface 91 facing the pressing jig 90B. The pressing jig 90B includes a facing surface 94 facing the bottom surface 91 of the manufacturing jig 90A, a pin 95 protruding from the center of the facing surface 94, and an inner peripheral surface 96 surrounding the outer peripheral side of the pin 95. The inner peripheral surface 96 is provided with a recess 97 for accommodating the first outer frame member 51.

As shown in FIG. 4A, in the first step, the cushion material 92 is arranged on the bottom surface 91 of the manufacturing jig 90A, and the release film 93 is arranged on the surface of the cushion material 92. The cushion material 92 is a foamed resin such as a silicone sponge. In this embodiment, a heat-resistant foamed resin is used as the cushion material 92 in order to heat the gel material G together with the manufacturing jig 90A to heat-cure the gel material G. The release film 93 is, for example, a film in which the surface of a film made of PET (polyethylene terephthalate) resin is coated with a fluororesin or a silicon resin.

Subsequently, in the second step, the first inner frame member 36 and the first outer frame member 51 are positioned on the pressing jig 90B. For example, as shown in FIG. 4B, the pressing jig 90B is turned over, the pin 95 protruding from the facing surface 94 is inserted into the first inner frame member 36, and the first inner frame member 36 is inserted into the facing surface 94. Make a contact. Further, the first outer frame member 51 is positioned in the recess 97 provided in the inner peripheral surface 96.

Next, in the third step, the pressing jig 90B is inverted, and the first inner frame member 36 and the first outer frame member 51 are arranged between the pressing jig 90B and the bottom surface 91 of the manufacturing jig 90A. do. As shown in FIG. 4C, since the cushion material 92 and the release film 93 are arranged on the bottom surface 91 of the manufacturing jig 90A, the first inner frame member 36, the first outer frame member 51, and the bottom surface are arranged. The cushion material 92 and the release film 93 are sandwiched between the cushion material 92 and the release film 93.

In the fourth step, the pressing jig 90B is pressed toward the bottom surface 91 of the manufacturing jig 90A. For example, as shown in FIG. 4D, the pressing jig 90B is pressed by using a pressing mechanism 98 such as a clamp. The cushion material 92 is crushed by the pressing force, and the release film 93 comes into close contact with the end faces of the first inner frame member 36 and the first outer frame member 51.

In the fifth step, the gel material G is filled in the annular gap S formed between the first inner frame member 36 and the first outer frame member 51. For example, as shown in FIG. 4 (e), the gel material G is filled from the dispenser 99. Before inserting the gel material G into the gap S, an adhesive auxiliary agent such as a primer (not shown) is applied to the outer peripheral surface 360 of the first inner frame member 36 and the inner peripheral surface 510 of the first outer frame member 51. deep. The primer (adhesive auxiliary agent) may be applied before the first inner frame member 36 and the first outer frame member 51 are positioned on the pressing jig 90B, or after being positioned on the pressing jig 90B. You may.

In the sixth step, the gel material G is heated together with the manufacturing jig 90A and the pressing jig 90B and cured by maintaining the gel material G at a specified temperature for a specified time. As a result, the first connecting body 11 which is a gel-like member is formed in the gap S. When the gel material G is heat-cured, the portion in contact with the primer reacts with the primer and is fixed to the outer peripheral surface 360 of the first inner frame member 36 and the inner peripheral surface 510 of the first outer frame member 51. Therefore, the first connecting body 11 is fixed to the first inner frame member 36 and the first outer frame member 51 by the adhesive force of the first connecting body 11 itself.

In the seventh step, as shown in FIG. 4 (f), the completed first connecting body 11 is removed from the manufacturing jig 90A and the pressing jig 90B together with the first inner frame member 36 and the first outer frame member 51. .. For example, a through hole (not shown) for arranging a protrusion pin is provided on the bottom surface 91 of the manufacturing jig 90A and the facing surface 94 of the pressing jig 90B, and the protrusion pin is used in the first inner portion. The first connecting body 11 together with the frame member 36 and the first outer frame member 51 is removed from the manufacturing jig 90A and the pressing jig 90B. Further, at the time of mold release, the mold release film 93 is peeled off from the first connector 11 and removed.

(Cross-sectional shape of the connector)
As shown in FIG. 3, the first inner frame member 36, the first outer frame member 51, the second inner frame member 37, and the second outer frame member 52 are the central axis LA of each member (see FIG. 4 (f)). ) And the axis L of the actuator 1 are assembled so as to coincide with each other. As shown in FIG. 4 (f), the first connecting body 11 includes a first gel end face 111 facing one side in the central axis LA direction and a second gel end face 112 facing the other side in the central axis LA direction. .. Similarly, the second connecting body 12 includes a first gel end face 121 facing one side in the central axis LA direction and a second gel end face 122 facing the other side in the central axis LA direction.

As shown in FIG. 3, when the actuator 1 is assembled, the first connecting body 11 and the second connecting body 12 are arranged in opposite directions in the axis L direction. Therefore, the first gel end surface 111 of the first connecting body 11 faces the other side L2 in the axis L direction, and the second gel end surface 112 of the first connecting body 11 faces one side L1 in the axis L direction. On the other hand, the first gel end surface 121 of the second connecting body 12 faces one side L1 in the axis L direction, and the second gel end surface 122 of the second connecting body 12 faces the other side L2 in the axis L direction. The length (height) of the first inner frame member 36 in the axis L direction is larger than that of the first outer frame member 51, and the first yoke 31 projects from the first outer frame member 51 to the other side L2 in the axis L direction. Contact with. The length (height) of the second inner frame member 37 in the axis L direction is larger than that of the second outer frame member 52, and the second inner frame member 37 projects from the second outer frame member 52 to one side L1 in the axis L direction and the second yoke 32. Contact with.

The shape of the first gel end surface 111 of the first connecting body 11 and the first gel end surface 121 of the second connecting body 12 is an inverted shape of the cushion material 92 arranged on the bottom surface 91. In this embodiment, since the first inner frame member 36 and the first outer frame member 51 are pressed against the cushion material 92, the cushion material 92 swells in the gap S between the first inner frame member 36 and the first outer frame member 51. There is. Therefore, the first gel end face 111 and the first gel end face 121 are concave surfaces. Further, the second gel end surface 112 and the second gel end surface 122 of the first connecting body 11 are concave surfaces because the gel material G is recessed by surface tension during molding.

The vibration characteristics of the first connecting body 11 and the second connecting body 12 are different depending on whether the first gel end faces 111 and 121 are flat surfaces and concave surfaces. For example, when the depth of the recess of the first gel end faces 111 and 121 increases, the resonance frequency shifts to the higher side. The shape (depth of the recess) of the first gel end faces 111 and 121 can be adjusted by the thickness of the cushion material 92. Therefore, in the manufacturing method of the present embodiment, the shapes of the first gel end faces 111 and 121 are adjusted by adjusting the thickness of the cushion material 92 to obtain the vibration characteristics of the first connecting body 11 and the second connecting body 12. It is possible to adjust.

(Main effect of this form)
As described above, the method for manufacturing the actuator 1 of the present embodiment is to manufacture a gel-like member for manufacturing a first connection body 11 and a second connection body 12 (gel-like member) connected to the support 2 and the movable body 3. A step and an assembly step of connecting the support 2 and the movable body 3 by the first connecting body 11 and the second connecting body 12 are performed. In the gel-like member manufacturing step, the first connecting body 11 and the second connecting body 12 are manufactured by the method shown in FIG. For example, in the case of manufacturing the first connecting body 11, the cushion material 92 is arranged on the bottom surface 91 of the manufacturing jig 90A, and surrounds the first inner frame member 36 and the outer peripheral side of the first inner frame member 36. When the first outer frame member 51 is positioned on the manufacturing jig 90A, the first inner frame member 36 and the first outer frame member 51 are pressed toward the bottom surface 91 to be brought into close contact with the cushion material 92. In this state, the gel material G is filled in the gap S between the first inner frame member 36 and the first outer frame member 51, and the gel material G is cured to form the first connecting body 11 (gel-like member). At the same time, the gel-like member is connected to the first inner frame member 36 and the first outer frame member 51. After that, the gel-like member is removed from the manufacturing jig 90A together with the inner frame member and the outer frame member.

In this embodiment, when the gel material G is filled in the gap S between the first inner frame member 36 and the first outer frame member 51, the first inner frame member 36 and the first outer frame member 51 are formed on the bottom surface of the manufacturing jig 90A. Positioning is performed on the manufacturing jig 90A via the cushion material 92 arranged on the bottom surface 91 of the manufacturing jig 90A without directly contacting the 91. By sandwiching the cushion material 92 between the first inner frame member 36 and the first outer frame member 51 and the manufacturing jig 90A in this way, the first inner frame member 36 and the first outer frame member 51 are manufactured. It is possible to eliminate the gap with the jig 90A. Therefore, when the gel material G is filled, air moves from the gap, and bubbles are generated inside the first connecting body 11 (gel-like member) or at the joint surface between the first connecting body 11 (gel-like member) and another member. It can prevent it from growing. Further, since the first connector 11 (gel-like member) does not directly adhere to the manufacturing jig 90A, mold release is easy, and the manufacturing jig 90A, the first inner frame member 36, and the first outer frame member 51 Since it is possible to prevent the gel material G from squeezing out into the gaps between the two, it is not necessary to remove the gel that squeezes out after mold release. Therefore, the labor of mold release and jig cleaning can be reduced, and the productivity of the first connector 11 (gel-like member) can be improved. The second connector 12 can also be manufactured by the same method, and the same effect can be obtained.

The actuator 1 of the present embodiment includes a support 2 and a movable body 3, a first connecting body 11 and a second connecting body 12 (gel-like member) connected to the supporting body 2 and the movable body 3, a magnet 61 and a coil 62. The movable body 3 has a magnetic drive mechanism 6 that moves the movable body 3 relative to the support body 2, and the movable body 3 has one of a magnet 61 and a coil 62 on the inner peripheral side of the support body 2. A support shaft 30 to be supported, a first inner frame member 36 fixed to the support shaft 30, and a second inner frame member 37 are provided, and the support body 2 is radially opposed to the first inner frame member 36. 1 A tubular case 20 that surrounds a first outer frame member 51 that faces the outer frame member 51 and the second inner frame member 37 in the radial direction, and the outer peripheral side of the first outer frame member 51 and the second outer frame member 52. Be prepared. The first connecting body 11 (gel-like member) is arranged in the gap between the first inner frame member 36 and the first outer frame member 51, and the second connecting body 12 (gel-like member) is arranged with the second inner frame member 37. It is arranged in the gap of the second outer frame member 52. In the first connecting body 11, both the first gel end surface 111 facing one side in the central axis LA direction and the second gel end surface 112 facing the other side in the central axis LA direction are concave surfaces. Similarly, in the second connecting body 12, both the first gel end surface 121 facing one side in the central axis LA direction and the second gel end surface 112 facing the other side in the central axis LA direction are concave surfaces.

In this embodiment, when the first connecting body 11 and the second connecting body 12 (gel-like member) are manufactured by casting, the surface (liquid surface) of the filled gel material G becomes concave due to surface tension. Further, when manufacturing by casting, since the cushion material 92 is arranged on the bottom surface 91 of the manufacturing jig 90A and the inner frame member and the outer frame member are pressed against the cushion material 92, the first connecting body 11 and the second connecting body are formed. In the 12 (gel-like member), the surface in contact with the cushion material 92 is concave. In this way, when the first connecting body 11 and the second connecting body 12 (gel-like member) are manufactured by casting, by using the cushion material 92, it is possible to prevent air from entering and the growth of bubbles. Can be prevented. Further, it is not necessary to remove the gel protruding into the gap after the mold is released, and the first connecting body 11 and the second connecting body 12 (gel-like member) do not directly adhere to the manufacturing jig 90A, so that the mold can be easily released. .. Therefore, the productivity of the first connecting body 11 and the second connecting body 12 (gel-like member) can be increased.

In this embodiment, the release film 93 is laminated on the cushion material 92 arranged on the bottom surface 91 of the manufacturing jig 90A, and the first inner frame member 36 and the first outer frame member 51 are cushioned via the release film 93. Adhere to. Therefore, when the first connector 11 (gel-like member) is released from the manufacturing jig 90A, it is easily released from the release film 93, so that the mold can be easily released. Therefore, the productivity of the first connecting body 11 and the second connecting body 12 (gel-like member) can be improved.

In this embodiment, the pressing jig 90B holds the first inner frame member 36 and the first outer frame member 51, and the pressing jig 90B is pressed toward the bottom surface 91 of the manufacturing jig 90A. 1 The inner frame member 36 and the first outer frame member 51 are brought into close contact with the cushion material 92. As described above, by using the pressing jig 90B, the first inner frame member 36 and the first outer frame member 51 can be easily and accurately positioned. Further, since the manufacturing jig 90A and the pressing jig 90B can be sandwiched and fixed by the pressing mechanism 98 such as a clamp, the first inner frame member 36 and the first outer frame member 51 are held in close contact with the cushion material 92. can. Therefore, when the gel material G is filled, there is little possibility that the first inner frame member 36 and the first outer frame member 51 are separated from the cushion material 92 to form air bubbles.

In this embodiment, an adhesive auxiliary agent such as a primer is applied to the outer peripheral surface 360 of the first inner frame member 36 and the inner peripheral surface 510 of the first outer frame member 51, and the adhesive auxiliary agent reacts with the gel material G. In order to fix the first connecting body 11 (gel-like member) to the outer peripheral surface 360 of the first inner frame member 36 and the inner peripheral surface 510 of the first outer frame member 51, the first inner frame member 36 and the first outer frame member The fixing strength of the first connecting body 11 (gel-like member) to 51 can be increased.

1 ... Actuator, 2 ... Support, 3 ... Movable body, 4 ... Coil holder, 6 ... Magnetic drive mechanism, 7 ... Wiring board, 8 ... Lead wire, 10 ... Connection body, 11 ... First connection body, 12 ... First 2 connection body, 20 ... case, 21 ... first lid member, 22 ... second lid member, 24 ... case body, 25 ... second outer frame member fixing portion, 26 ... lid portion, 27 ... locking portion, 28 ... Regulatory part, 29 ... groove part, 30 ... support shaft, 31
... 1st yoke, 32 ... 2nd yoke, 33 ... 1st magnetic member, 34 ... 2nd magnetic member, 35 ... 3rd yoke, 36 ... 1st inner frame member, 37 ... 2nd inner frame member, 41 ... 1 Outer frame member fixing portion, 42 ... Body portion, 43 ... 1st recess, 44 ... 1st stage portion, 45 ... 2nd stage portion, 46 ... 2nd recess, 47 ... 3rd stage portion, 48 ... Groove portion, 49 ... Convex part, 51 ... 1st outer frame member, 52 ... 2nd outer frame member, 60 ... Wiring lead part, 61 ... Magnet, 62 ... Coil, 63 ... Coil wire, 64 ... Terminal pin, 65 ... Notch part, 66 ... cover, 69 ... substrate fixing part, 71 ... holding groove, 90A ... manufacturing jig, 90B ... pressing jig, 91 ... bottom surface, 92 ... cushioning material, 93 ... release film, 94 ... facing surface, 95 ... Pin, 96 ... Inner peripheral surface, 97 ... Concave, 98 ... Pressing mechanism, 99 ... Dispenser, 111, 121 ... First gel end face, 112, 122 ... Second gel end face, 210 ... Welding convex part, 220 ... Welding Jig convex part, 250 ... Welding hole, 310, 330, 340 ... Shaft hole, 331 ... End plate part, 332 ... Cylindrical part, 360 ... Outer surface surface, 370 ... Outer surface surface, 410 ... Welding recess, 510, 520 ... Peripheral surface, 511, 512 ... annular step, 610 ... shaft hole, G ... gel material, L ... axis, L1 ... one side, L2 ... other side, LA ... center axis, S ... gap

Claims (6)

A method for manufacturing an actuator including a support and a movable body, a gel-like member connected to the support and the movable body, and a magnetic drive mechanism for moving the movable body relative to the support. ,
The gel-like member manufacturing process for manufacturing the gel-like member and
The assembly step of connecting the support and the movable body by the gel-like member is performed.
In the gel-like member manufacturing process,
Place the cushion material on the bottom of the manufacturing jig and place it.
When positioning the inner frame member and the outer frame member surrounding the outer peripheral side of the inner frame member on the manufacturing jig, the inner frame member and the outer frame member are pressed toward the bottom surface to press the cushion material. In close contact with
A gel material is filled in the gap between the inner frame member and the outer frame member, and the gel material is filled.
By curing the gel material, the gel-like member is formed and the gel-like member is connected to the inner frame member and the outer frame member.
A method for manufacturing an actuator, which comprises removing the gel-like member together with the inner frame member and the outer frame member from the manufacturing jig. The first aspect of the present invention, wherein a release film is laminated on the cushion material arranged on the bottom surface, and the inner frame member and the outer frame member are brought into close contact with the cushion via the release film. Actuator manufacturing method. The pressing jig holds the inner frame member and the outer frame member,
The method for manufacturing an actuator according to claim 1 or 2, wherein the pressing jig is pressed toward the bottom surface to bring the inner frame member and the outer frame member into close contact with the cushion material. An adhesive auxiliary is applied to the outer peripheral surface of the inner frame member and the inner peripheral surface of the outer frame member.
Any of claims 1 to 3, wherein the gel-like member is fixed to the outer peripheral surface of the inner frame member and the inner peripheral surface of the outer frame member by reacting the adhesive assisting agent with the gel material. The method for manufacturing an actuator according to item 1. The method for manufacturing an actuator according to claim 4, wherein the adhesive aid is a primer. Supports and movable bodies,
The gel-like member connected to the support and the movable body, and
It comprises a magnet and a coil and has a magnetic drive mechanism that moves the movable body relative to the support.
The movable body includes a support shaft that supports one of the magnet and the coil on the inner peripheral side of the support, and an inner frame member that is fixed to the support shaft.
The support includes an outer frame member that faces the inner frame member in the radial direction, and a cylindrical case that surrounds the outer peripheral side of the outer frame member.
The gel-like member is arranged in the gap between the inner frame member and the outer frame member.
The gel-like member includes a first gel end face facing one side in the central axis direction of the front inner frame member and the outer frame member, and a second gel end face facing the other side in the center axis direction.
An actuator characterized in that the first gel end face and the second gel end face are concave surfaces.

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