JP2020089818A - Actuator, and method for manufacturing actuator - Google Patents

Abstract

To provide an actuator which can direct a magnet to a predetermined position of a yoke provided on a side opposite to a coil with respect to the magnet, and a method for manufacturing the same.SOLUTION: In the actuator, a magnetic driving circuit 6 is provided with a first yoke 86 opposite to a first coil 71 and a second coil 72 with respect to a first magnet 81 and a second magnet 82. The first yoke 86 is provided with a positioning projection 865 formed by projecting a part of the first yoke 86. In the positioning projection 865, a common projection 865c (first projection 865a and second projection 865b) specifies a position on the second magnet 82 side of the first magnet 81 and specifies a position on the first magnet 81 side of the second magnet 82. The first magnet 81 and the second magnet 82 are arranged at predetermined positions in a third direction Y by a third projection 865d and a third projection 865e.SELECTED DRAWING: Figure 5

Description

The present invention relates to an actuator that vibrates a movable body and a method for manufacturing the actuator.

An actuator having a support, a movable body, a connection body connected to the movable body and the support, and a magnetic drive circuit for moving the movable body relative to the support is proposed as a device for reporting information by vibration. The magnetic drive circuit drives the movable body in the second direction that intersects the first direction by the coil and the magnet that face each other in the first direction (see Patent Document 1). Patent Document 1 proposes a vibration actuator in which a magnet is fixed to an opening of a frame-shaped weight with an adhesive. With this structure, the magnet can be arranged at a predetermined position on the movable body.

JP, 2018-137995, A

The vibration actuator described in the cited document 1 has a problem that the magnetic efficiency is low because the yoke is not provided on the side opposite to the coil with respect to the magnet. Further, if the magnet is fixed to one surface of the yoke, a member provided with an opening for arranging the magnet is not required, so that the structure can be simplified. However, the structure in which the magnet is arranged on one surface of the yoke has a problem that the position of the magnet is easily displaced.

In view of the above problems, an object of the present invention is to provide an actuator capable of directing the magnet to a predetermined position of a yoke provided on the side opposite to the coil with respect to the magnet, and a method for manufacturing the actuator. ..

In order to solve the above problems, an actuator according to the present invention includes a support, a movable body, a connector having at least one of elasticity and viscoelasticity, and a magnetic body that is connected to the movable body and the support. A magnetic circuit, the magnetic drive circuit includes a first coil provided on one side member of the support body and the movable body, and the support body with one surface facing the side of the first coil. The movable body includes: a yoke provided on the other member of the movable body; and a first magnet held on the one surface of the yoke so as to face the first coil in the first direction. Is driven in a second direction intersecting the first direction, and a part of the yoke protrudes from the one surface to position the first magnet in the in-plane direction of the yoke. It is characterized by having a part.

In the present invention, since the yoke is provided on the side opposite to the first coil with respect to the first magnet, the magnetic efficiency can be improved. Further, the first magnet is held on one surface of the yoke, but since the positioning protrusion is projected from the one surface of the yoke, the first magnet can be arranged at a predetermined position on the one surface of the yoke. Further, since the positioning protrusion is a portion obtained by projecting a part of the yoke, even if the positioning protrusion is provided, an increase in cost can be suppressed.

In the present invention, the magnetic drive circuit includes a second magnet held on the one surface of the yoke so as to be adjacent to the first magnet, and the magnetic pole on the second magnet side of the first magnet and the second magnet. The magnetic poles of the two magnets on the side of the first magnet are different, and the positioning convex portion defines a first convex portion that defines a position of the first magnet on the side of the second magnet, and the first convex portion of the second magnet. It is possible to adopt a mode including a second convex portion that defines the position on the side of one magnet. In this case, when the first magnet and the second magnet are arranged, an attractive force acts, but the position of the first magnet on the second magnet side is defined by the first convex portion, and the second magnet is arranged by the second magnet. The position on the first magnet side is defined by the convex portion. Therefore, the first magnet and the second magnet can be arranged at predetermined positions on one surface of the yoke.

In the present invention, the magnetic drive circuit includes a second coil provided on the one side member so as to be adjacent to the first coil, and the second magnet faces the second coil in the first direction. The present embodiment can be adopted.

In the present invention, a mode in which the first convex portion and the second convex portion are common convex portions can be adopted.

In the present invention, it is possible to adopt a mode in which the first magnet and the second magnet are adjacent to each other in the second direction.

In the present invention, the positioning projection has a third projection for positioning the first magnet and for positioning the second magnet in a direction intersecting a direction in which the first magnet and the second magnet are adjacent to each other. The aspect including can be adopted. According to this aspect, the first magnet and the second magnet can be arranged at a predetermined position on the one surface of the yoke in a direction intersecting the direction in which the first magnet and the second magnet are adjacent to each other.

In the present invention, the protrusion size of the positioning protrusion from the one surface may be lower than the thickness of the first magnet and the thickness of the second magnet. According to this aspect, in manufacturing the actuator, in the step of disposing the first magnet and the second magnet in the yoke, the lowest magnet among the plurality of magnets stacked inside the cartridge is selected. When the first magnet and the second magnet are slid and arranged on the one surface of the yoke, the positioning protrusion does not interfere.

In the present invention, the positioning protrusion is not provided on the side of the yoke opposite to the second magnet with respect to the first magnet, and on the side of the second magnet opposite to the first magnet. Can be adopted. According to this aspect, in manufacturing the actuator, in the step of disposing the first magnet and the second magnet in the yoke, the lowest magnet among the plurality of magnets stacked inside the cartridge is selected. When the first magnet and the second magnet are slid and arranged on the one surface of the yoke, the positioning protrusion does not interfere.

In the present invention, it is possible to adopt a mode in which the positioning projection is a projection in which a part of the yoke is projected from a surface opposite to the one surface.

In the present invention, it is possible to adopt a mode in which the positioning protrusion is a protrusion obtained by bending a part of the yoke.

In the present invention, it is possible to adopt a mode in which at least one of the first magnet and the yoke is provided with a mark indicating a magnetization direction with respect to the first magnet.

In the present invention, since the yoke is provided on the side opposite to the first coil with respect to the first magnet,
The magnetic efficiency can be increased. Further, the first magnet is held on one surface of the yoke, but since the positioning protrusion is projected from the one surface of the yoke, the first magnet can be arranged at a predetermined position on the one surface of the yoke. Further, since the positioning protrusion is a portion obtained by projecting a part of the yoke, even if the positioning protrusion is provided, an increase in cost can be suppressed.

The perspective view of the actuator concerning the embodiment of the present invention. The XZ sectional view of the actuator shown in FIG. FIG. 2 is an exploded perspective view of the actuator shown in FIG. 1 when disassembled and viewed from one side in a first direction. FIG. 2 is an exploded perspective view of the actuator shown in FIG. 1 when disassembled and viewed from the other side in the first direction. FIG. 3 is an exploded perspective view of the magnetic drive circuit shown in FIG. 2. Explanatory drawing of a holder, a coil, etc. which are shown in FIG. Explanatory drawing of the holder etc. which are shown in FIG. Explanatory drawing of the movable body shown in FIG. Explanatory drawing of the 1st yoke etc. which are shown in FIG. Explanatory drawing of the 2nd yoke etc. which are shown in FIG. Explanatory drawing which shows the process of mounting a magnet in the 2nd yoke shown in FIG. Explanatory drawing of the actuator which concerns on another embodiment of this invention.

An embodiment of the present invention will be described with reference to the drawings. In the following description, the three directions that intersect each other will be described as a first direction Z, a second direction X, and a third direction Y, respectively. Further, the first direction Z, the second direction X, and the third direction Y are directions orthogonal to each other. Further, X1 is attached to one side of the second direction X, X2 is attached to the other side of the second direction X, Y1 is attached to one side of the third direction Y, and Y2 is attached to the other side of the third direction Y. , Z1 is attached to one side of the first direction Z, and Z2 is attached to the other side of the first direction Z.

In the magnetic drive circuit 6 of the actuator 1 described below, the coil 7 is provided on the support 2 (one side member) side, and the magnet 8 is provided on the movable body 3 (other side member) side. , And the magnet 8 are provided on the side of the support body 2 (member on the other side), and the coil 7 is provided on the side of the movable body 3 (member on the one side). In the following description, the coil 7 is provided on the support body 2 side and the magnet 8 is provided on the movable body 3 side.

(overall structure)
FIG. 1 is a perspective view of an actuator 1 according to an embodiment of the present invention. FIG. 2 is an XZ sectional view of the actuator 1 shown in FIG. FIG. 3 is an exploded perspective view of the actuator 1 shown in FIG. 1 when disassembled and viewed from one side Z1 of the first direction Z. FIG. 4 is an exploded perspective view when the actuator 1 shown in FIG. 1 is disassembled and viewed from the other side Z2 in the first direction Z.

As shown in FIGS. 1 and 2, the actuator 1 of the present embodiment has a rectangular parallelepiped shape in which the dimension in the second direction X is larger than the dimension in the third direction Y as a whole. In addition, as shown in FIG. 2, the actuator 1 includes a support body 2, a movable body 3 movably supported by the support body 2, and a magnetic drive circuit 6 for relatively moving the movable body 3 with respect to the support body 2. The magnetic drive circuit 6 vibrates the movable body 3 in the second direction X. Further, the actuator 1 is provided with a connection body 90 connected to the support body 2 and the movable body 3.
In advance

As shown in FIGS. 1, 2 and 3, the support 2 includes a first case member 16, a holder 60, and a second case member 17, which are sequentially stacked from one side Z1 to the other side Z2 in the first direction Z. The movable body 3 and the magnetic drive circuit 6 are arranged between the first case member 16 and the second case member 17. The first case member 16, the holder 60 and the second case member 17 each have a quadrangular planar shape. The first corner 160, which is the corner of the first case member 16, the second corner 600, which is the corner of the holder 60, and the third corner 170, which is the corner of the second case member 17, are in the first direction Z. It overlaps with. In the present embodiment, the first case member 16, the holder 60, and the second case member 17 are each made of resin.

As shown in FIGS. 3 and 4, the first case member 16 includes a first wall portion 161 located on one side X1 of the second direction X and a second wall portion located on the other side X2 of the second direction X. 162, a third wall portion 163 located on one side Y1 in the third direction Y, and a fourth wall portion 164 located on the other side Y2 in the third direction Y, and has a bottom plate portion 165. .. When viewed from the first direction Z, the widths (dimensions in the second direction X) of the first wall portion 161 and the second wall portion 162 are the widths of the third wall portion 163 and the fourth wall portion 164 (in the third direction Y). Dimension) wider.

Positioning holes 16c opened toward the other side Z2 in the first direction Z are formed near each of the four corners of the first case member 16. Further, a bottomed hole 16e for stopping the screw 18 made of a tapping screw is formed in one diagonal position of the first case member 16, and a through hole 16f is formed in the other diagonal position. ..

On the surface of the bottom plate portion 165 on the other side Z2 in the first direction Z, two recesses 166 and 167 arranged in the second direction X are formed. Through holes 16a are formed at the corners of the recess 166 on one side X1 in the second direction X and the corners of the recess 167 on the other side X2 in the second direction X. Through holes 16b are formed at both ends of the recesses 166 and 167 in the third direction Y.

On the outer surface of the third wall portion 163, a concave portion 168 recessed on the other side Y2 in the third direction Y extends along the second direction X. In the third wall portion 163, a plurality of convex plate portions 163a protruding toward the other side Z2 in the first direction Z are formed along the second direction X at predetermined intervals. The first wall portion 161 and the second wall portion 162 are formed with columnar protrusions 161h and 162h protruding toward the other side Z2 in the first direction Z. Further, on the first wall portion 161 and the second wall portion 162, convex plate portions 161a and 162a protruding from the outer edge to the other side Z2 in the first direction Z are formed in the center in the third direction Y.

The second case member 17 includes a first wall portion 171 located on one side X1 of the second direction X, a second wall portion 172 located on the other side X2 of the second direction X, and one side of the third direction Y. The bottom plate part 175 is surrounded by the third wall part 173 located in Y1 and the fourth wall part 174 located on the other side Y2 in the third direction Y. When viewed from the first direction Z, the widths of the first wall portion 171 and the second wall portion 172 (dimensions in the second direction X) are the widths of the third wall portion 173 and the fourth wall portion 174 (in the third direction Y). Dimension) wider.

Positioning recesses 17d that are open toward the one side Z1 in the first direction Z are formed near each of the four corners of the second case member 16. A through hole 17e for fixing the screw 18 is formed at one diagonal position of the second case member 17, and a through hole 17f is formed at the other diagonal position.

On the surface of the bottom plate portion 175 on the one side Z1 in the first direction Z, two recesses 176 and 177 arranged in the second direction X are formed. Further, notches 17b are formed at the edges of the recesses 176 and 177.

On the outer surface of the third wall portion 173, a concave portion 178 recessed on the other side Y2 in the third direction Y has a second direction X.
Extends along. The first wall portion 171 and the second wall portion 172 are formed with holes 171h and 172h into which the convex portions 161h and 162h of the first case member 16 fit. On the first wall portion 171, a convex plate portion 171a protruding in one side Z1 of the first direction Z is formed at the center in the third direction Y.

(Structure of magnetic drive circuit 6)
FIG. 5 is an exploded perspective view of the magnetic drive circuit 6 shown in FIG. As shown in FIGS. 2 and 5, the magnetic drive circuit 6 includes a coil 7 and a magnet 8 that faces the coil 7 in the first direction Z. The coil 7 includes a first coil 71 and a second coil 72 that are arranged in parallel in the second direction X, and the coil 7 is held by the holder 60 of the support body 2.

(Configuration of coil 7 and holder 60)
FIG. 6 is an explanatory view of the holder 60, the coil 7 and the like shown in FIG. FIG. 7 is an explanatory diagram of the holder 60 and the like shown in FIG. As shown in FIGS. 6 and 7, the coil 7 is an elliptical air-core coil in which the long side 701 (effective portion) extends in the third direction Y, and the coil 7 is provided on one side Y1 of the third direction Y. The end 705 of the line is pulled out.

The holder 60 is located on one side Y1 of the second direction X, the first wall portion 61 located on the other side X2 of the second direction X, and the one side Y1 of the third direction Y. The bottom plate portion 65 is surrounded by the third wall portion 63 and the fourth wall portion 64 located on the other side Y2 in the third direction Y. When viewed in the first direction Z, the widths of the first wall portion 61 and the second wall portion 62 (dimensions in the second direction X) are the widths of the third wall portion 63 and the fourth wall portion 64 (in the third direction Y). Dimension) wider.

A through hole 60e for passing the screw 18 is formed in one diagonal position of the holder 60, and a through hole 60f is formed in the other diagonal position. At both ends of the third wall portion 63 and the fourth wall portion 64 in the second direction X, positioning projections 60c protruding in one side Z1 of the first direction Z and protruding in the other side Z2 of the first direction Z. The positioning convex portion 60d is formed.

Two coil holding holes 651 and 652 are formed in the bottom plate portion 65 so as to be juxtaposed in the second direction X, and the first coil 71 and the second coil 72 are arranged in each of the coil holding holes 651 and 652. ing. The coil holding holes 651 and 652 are through holes, and the receiving portions 641 projecting at both ends in the third direction Y so as to overlap with the coil holding holes 651 and 652 on the other side Z2 in the first direction Z, 642 is formed. Therefore, when the first coil 71 and the second coil 72 are mounted in the coil holding holes 651 and 652 from the one side Z1 in the first direction Z, the short side 702 (ineffective portion) of the coil 7 is moved to the first by the receiving portions 641 and 642. It is supported by the other side Z1 in the direction Z. In this state, the plate 26 is superposed on the holder 60 from the one side Z1 in the first direction Z, and the plate 26 is fixed to the first coil 71 and the second coil 72 by an adhesive and also fixed to the holder 60. It The plate 26 is, for example, a non-magnetic metal plate such as aluminum or stainless steel.

The holder 60 has a first opening 601 formed between the coil holding hole 651 and the first wall portion 61, and a second opening 602 formed between the coil holding hole 652 and the second wall portion 62. ing. The first opening 601 and the second opening 602 penetrate the bottom plate portion 65 of the holder 60 in the first direction Z. Notches 603 are formed on the inner peripheral surfaces of the first opening 601 and the second opening 602.

In the first wall portion 61, a recess 611 (see FIGS. 2 and 4) is formed between the second corners 600 on one side Z1 in the first direction Z, and a recess is formed on the other side Z2 in the first direction Z. 612 is formed. In the second wall portion 62, a recess 621 (see FIGS. 2 and 4) is formed between the second corners 600 on one side Z1 in the first direction Z, and a recess is formed on the other side Z2 in the first direction Z. 622 is formed. Therefore, the four second corners 600 have a structure protruding toward both sides in the first direction Z.

On the outer surface of the third wall 63, a recess 630 recessed in the other side Y2 in the third direction Y extends along the second direction X, and the bottom of the recess 630 has one side in the first direction Z. A plurality of cutout-shaped lead-out portions 68 having openings Z1 are formed along the second direction X. In addition, the portion of the recess 630 sandwiched by the lead-out portions 68 is a recess 630a that is further recessed from the bottom of the recess 630 to the other side in the third direction Y.

A plurality of engaging protrusions 69 protruding in one side Y1 of the third direction Y at positions displaced from the recess 630a in the second direction X are formed on the bottom of the recess 630a along the second direction X. There is. In this embodiment, the engaging protrusions 69 are formed at three places.

(Structure of support 2)
In this embodiment, the first case member 16, the holder 60, and the second case member 17 are stacked in the first direction Z, and the through hole 17e of the second case member 17, the through hole 60e of the holder 60, and the second case are provided. The screw 18 is fixed to the through hole 17e of the member 17, and the first case member 16, the holder 60 and the second case member 17 are fastened in the first direction Z. When the screw 18 is stopped, the head of the screw 18 does not project from the second case member 17 to the other side Z2 in the first direction Z.

Further, an adhesive is filled between the first corner portion 160 of the first case member 16 and the second corner portion 600 of the holder 60, and the second corner portion 600 of the holder 60 and the third corner portion of the second case member 17 are filled. An adhesive is filled between the part 170 and the part 170.

In this way, the support body 2 is formed by the first case member 16, the holder 60, and the second case member 17. At this time, the convex portions 161h and 162h of the first case member 16 penetrate the holes 61h and 62h of the holder 60 and fit into the holes 171h and 172h of the second case member 17, respectively. Further, the convex portion 60c of the holder 60 fits into the hole 16c of the first case member 16, and the convex portion 60d of the holder 60 fits into the concave portion 17c of the second case member 17. Therefore, the first case member 16, the holder 60, and the second case member 17 are connected to each other while being positioned with respect to each other. Further, the convex plate portion 163a of the first case member 16 overlaps the concave portion 630a of the holder 60.

The through hole 17f of the second case member 17, the through hole 60f of the holder 60, and the through hole 17f of the second case member 17 are screws (not shown) for fixing to the frame of the device when the actuator 1 is mounted on various devices. (Not shown) is stopped.

(Treatment of the end of the coil 7)
In this embodiment, the wiring board 15 is fixed to the outer surface of the third wall portion 63 of the holder 60. A notch 158 is formed in the wiring board 15 at a portion overlapping the lead portion 68. Further, the wiring board 15 has a plurality of engagement holes 159 formed in a portion overlapping the engagement protrusion 69. In the present embodiment, three engaging holes 159 are formed as the plurality of engaging holes 159 in correspondence with the number of engaging convex portions 69, and among the three engaging holes 159, the central engaging hole 159. Are formed in a notch shape connected to the notch 158.

The wiring board 15 is fixed to the outer surface of the third wall portion 63 of the holder 60 with an adhesive in a state where the engagement protrusion 69 and the engagement hole 159 are engaged with each other. On the wiring board 15, a land 151 to which the end 705 of the first coil 71 and the end 705 of the second coil 72 are electrically connected, and a wiring member (not shown) from the outside are electrically connected. The end portion 705 of the first coil 71 and the end portion 705 of the second coil 72 are drawn to the land 151 via the lead-out portion 68, and then electrically connected to the land 151 by soldering. Connected to each other. The land 151 and the land 152 are connected via a wiring pattern (not shown).

In this embodiment, three lands 151 are formed, and the winding end end 705 of the first coil 71 and the winding start end 705 of the second coil 72 are electrically connected to the central land 151. It Therefore, the first coil 71 and the second coil 72 are electrically connected in series. The first coil 71 and the second coil 72 may be electrically connected in parallel.

(Structure of the movable body 3)
FIG. 8 is an explanatory diagram of the movable body 3 shown in FIG. FIG. 9 is an explanatory diagram of the first yoke 86 and the like shown in FIG. FIG. 10 is an explanatory diagram of the second yoke 87 and the like shown in FIG.

As shown in FIG. 8, the movable body 3 shown in FIG. 2 and the like includes a first yoke 86 including a flat plate portion 860 facing the coil 7 on the one side Z1 in the first direction Z, and a coil 7 with respect to the coil 7. The magnet 8 is provided with the second yoke 87 having the flat plate portion 870 facing each other on the other side Z2 in the first direction Z. The magnet 8 is held on at least one of the surface of the flat plate portion 860 of the first yoke 86 facing the coil 7 and the surface of the flat plate portion 870 of the second yoke 87 facing the coil 7, and is held by the coil 7 in the first direction Z. Are facing each other.

In the present embodiment, as shown in FIG. 9, the movable body 3 serves as a magnet 8 and a first magnet 81 fixed to the surface of the flat plate portion 860 of the first yoke 86 facing the coil 7 by a method such as adhesion. Of the surface of the flat plate portion 870 of the second yoke 87 facing the coil 7, the second magnet 82 adjacent to the first magnet 81 in the direction intersecting the first direction Z is provided. In the present embodiment, the first magnet 81 and the second magnet 82 are adjacent to each other in the second direction X. Therefore, the first magnet 81 faces the long side 701 of the first coil 71 on one side Z1 in the first direction Z, and the second magnet 82 faces the long side 701 of the second coil 72 in the first direction Z one side. Opposed on the side Z1.

In addition, as shown in FIG. 10, the movable body 3 includes, as the magnet 8, a first magnet 83 fixed to the surface of the flat plate portion 870 of the second yoke 87 facing the coil 7 by a method such as bonding, and a second magnet 83. Of the surface of the flat plate portion 870 of the yoke 87 that faces the coil 7, the second magnet 84 that is adjacent to the first magnet 83 in the direction intersecting the first direction Z is provided. In the present embodiment, the first magnet 83 and the second magnet 84 are adjacent to each other in the second direction X. Therefore, the first magnet 83 faces the long side 701 of the first coil 71 on the other side Z2 in the first direction Z, and the second magnet 84 contacts the long side 701 of the second coil 72 on the other side in the first direction Z. Opposed on the side Z2.

In this embodiment, the first magnets 81 and 83 and the second magnets 82 and 84 are polarized and magnetized in the thickness direction (first direction Z) and the width direction (X direction), respectively. The first magnet 81 and the second magnet 82 are magnetized in the same direction in the adjacent direction (second direction X), and the first magnet 83 and the second magnet 84 are adjacent direction (second direction X). Are magnetized in the same direction. Therefore, the magnetic poles of the first magnet 81 on the second magnet 82 side and the magnetic poles of the second magnet 82 on the first magnet 81 side are different, and the magnetic poles of the first magnet 83 on the second magnet 84 side and the second magnet 84. Is different from the magnetic pole on the first magnet 83 side.

Further, the first magnet 81 and the first magnet 83 are magnetized in opposite directions in the adjacent direction (second direction X), and the second magnet 82 and the second magnet 84 are adjacent to each other (second direction). X) is magnetized in the opposite direction. Therefore, the first magnet 81 and the first magnet 83 have different magnetic poles on the surface facing the first coil 71, and the second magnet 82 and the second magnet 84 have different magnetic poles on the surface facing the second coil 72. The magnetic poles are different.

As shown in FIGS. 8, 9 and 10, the first yoke 86 extends from the end of the flat plate portion 860 on the one side X1 in the second direction to the other side Z2 in the first direction Z and extends to the second yoke 86. 87 and a first connecting plate portion 861 connected to the second yoke 87 extending from the end of the flat plate portion 860 on the other side X2 in the second direction to the other side Z2 in the first direction Z. Two connecting plate portions 862 are provided. The first connecting plate portion 861 and the second connecting plate portion 862 have smaller dimensions in the third direction Y than the flat plate portion 860, and the notches 869 are formed on both sides of the first connecting plate portion 861 and the second connecting plate portion 862. ing. Here, as shown in FIGS. 3 and 4, the first connecting plate portion 861 passes through the first opening 601 of the holder 60 on the one side X1 of the second direction X with respect to the coil 7 in the first direction Z. Of the second connecting plate portion 862 extending toward the other side Z2 of the holder 60 through the second opening 602 of the holder 60 on the other side Z2 of the coil 7 in the second direction X. It extends toward the side Z2.

In this embodiment, the first connecting plate portion 861 and the second connecting plate portion 862 are connected to the end portion of the second yoke 87 by welding. More specifically, the end portion 861a of the other side Z2 of the first connecting plate portion 861 in the first direction Z overlaps with the first side surface 871 of the flat plate portion 870 of the second yoke 87 and the first connecting plate portion 861. The first side surface 871 of the second yoke 87 is welded. Similarly, the end portion 862a of the second connecting plate portion 862 on the other side Z2 in the first direction Z overlaps with the second side surface 872 of the flat plate portion 870 of the second yoke 87, and the second connecting plate portion 862 and the second yoke. The second side surface 872 of 87 is welded.

On one of the end portion 861a of the first connecting plate portion 861 and the first side surface 871, a convex portion that is fitted and welded to a concave portion formed on the other is formed, and an end portion of the second connecting plate portion 862. One of the 862a and the second side surface 872 is provided with a convex portion that is fitted into and welded to the concave portion formed in the other. In the present embodiment, the convex portion 873 formed on the flat plate portion 870 is fitted and welded to the concave portion 863 formed on the end portion 861a of the first connecting plate portion 861, and the convex portion 874 formed on the flat plate portion 870 is the second. It is fitted and welded to a recess 864 formed in the end portion 862a of the connecting plate portion 862.

In this embodiment, the flat plate portion 860 of the first yoke 86 and the flat plate portion 870 of the second yoke 87 have ends of the first yoke 86 and the second yoke 87 at the ends in the third direction Y when the magnet 8 is mounted. Notches 860a and 870a for positioning are formed.

In the movable body 3 thus configured, at least one of the first yoke 86 and the magnet 8 is provided with a mark indicating the magnetizing direction of the magnet 8. For example, of the four corners of the flat plate portion 860, the first yoke 86 is provided with a mark 86s in which the corner on the side where the S pole is located is cut out, and the other corners are angular. At least one of the second yoke 87 and the magnet 8 is also marked with a magnetizing direction of the magnet 8. For example, of the four corners of the flat plate portion 870, the second yoke 87 is provided with a mark 87s in which the corner on the side where the N pole is located is cut out, and the other corners are angular. In addition, when attaching a mark to the magnet 8, printing or the like may be used.

(Configuration of positioning protrusions 865 and 875)
FIG. 11 is an explanatory diagram showing a step of mounting the magnet 8 on the second yoke 87 shown in FIG. As shown in FIG. 9, in the first yoke 86, a part of the first yoke 86 protrudes from one surface on which the magnet 8 is fixed, and the flat plate portion of the first yoke 86 of the first magnet 81 and the second magnet 82. It has a positioning projection 865 for positioning in the in-plane direction of 860. In the present embodiment, the positioning protrusion 865 includes the first protrusion 865a that defines the position of the first magnet 81 on the second magnet 82 side and the second protrusion 865a that defines the position of the second magnet 82 on the first magnet 81 side. Section 865b. In the present embodiment, the first convex portion 865a and the second convex portion 865b are the common convex portion 865c provided between the first magnet 81 and the second magnet 82. The convex portion 865c (the first convex portion 865a and the second convex portion 865b) is provided at two locations separated in the third direction Y.

The positioning protrusion 865 further includes a second direction X in which the first magnet 81 and the second magnet 82 are adjacent to each other.
It includes third protrusions 865d and 865e for positioning the first magnet 81 and the second magnet 82 in the third direction Y intersecting with. In the present embodiment, the third protrusions 865d are provided at two locations on both sides of the first magnet 81 in the Y direction, and the third protrusions 865e are provided at two locations on both sides of the second magnet 82 in the Y direction.

As shown in FIG. 10, in the second yoke 87 as well, like the first yoke 86, a part of the second yoke 87 protrudes from the one surface on which the magnet 8 is fixed and the first magnet 83 and the second magnet 84. The second yoke 87 has a positioning protrusion 875 that positions the flat plate portion 870 in the in-plane direction. In the present embodiment, the positioning protrusion 875 includes the first protrusion 875a that defines the position of the first magnet 83 on the second magnet 84 side and the second protrusion 875 that defines the position of the second magnet 84 on the first magnet 83 side. Section 875b. In the present embodiment, the first convex portion 875a and the second convex portion 875b are the common convex portion 875c provided between the first magnet 83 and the second magnet 84. The convex portion 875c (the first convex portion 875a and the second convex portion 875b) is provided at two locations separated in the third direction Y.

The positioning protrusion 875 further positions the first magnet 83 and the second magnet 84 in the third direction Y intersecting the second direction X in which the first magnet 83 and the second magnet 84 are adjacent to each other. It includes three convex portions 875d and 875e. In the present embodiment, the third protrusions 875d are provided at two locations on both sides of the first magnet 83 in the Y direction, and the third protrusions 875e are provided at two locations on both sides of the second magnet 84 in the Y direction.

The positioning projection 865 is a projection in which a part of the flat plate portion 860 of the first yoke 86 is projected from the other surface side opposite to the magnet 8 to the one surface side where the magnet 8 is located. The positioning protrusion 875 is a protrusion in which a part of the flat plate portion 870 of the second yoke 87 is protruded from the other surface side opposite to the magnet 8 to the one surface side where the magnet 8 is located. Therefore, for example, as shown in FIG. 8, a concave mark 875x when the positioning protrusion 875 is formed is left on the other surface of the flat plate portion 870 of the second yoke 87 opposite to the magnet 8. Further, as shown in FIG. 4, on the other surface of the flat plate portion 860 of the first yoke 86 opposite to the magnet 8, a concave mark 865x when the positioning convex portion 865 is formed remains.

Here, in the first yoke 86, positioning protrusions 865 are provided on the opposite side of the first magnet 81 from the second magnet 82 and on the opposite side of the second magnet 82 from the first magnet 81. Absent. Further, in the second yoke 87, the positioning protrusion 875 is not provided on the side opposite to the second magnet 84 with respect to the first magnet 83 and on the side opposite to the first magnet 83 with respect to the second magnet 84. .. Further, as shown in FIG. 11, the protrusion size of the positioning protrusion 875 from the flat plate portion 870 is lower than the thickness of the magnet 8 (thickness of the first magnet 83 and second magnet 84).

Therefore, in manufacturing the actuator 1, in the step of disposing the first magnet 83 and the second magnet 84 in the second yoke 87, the lowest magnet among the plurality of magnets 8 stacked inside the cartridge 800. When the first magnet 83 and the second magnet 84 are slid on the one surface of the second yoke 87 by sliding 8, the positioning protrusion 875 does not easily interfere with the positioning protrusion 875 and the cartridge 800. ..

Although not shown, in the first yoke 86 as well, as in the second yoke 87 side, the projection size of the positioning projection 865 from the flat plate portion 860 is determined by the thickness of the magnet 8 (the thickness of the first magnet 81, and (Thickness of the second magnet 82). Therefore, in the step shown in FIG. 11, the positioning protrusion 865 does not obstruct the arrangement of the first magnet 81 and the second magnet 82. Although the first connecting plate portion 861 and the second connecting plate portion 862 exist in the first yoke 86, if the cartridge 800 is tilted, the first connecting plate portion 861 and the second connecting plate portion 862 become the cartridge 800. Interference can be avoided.

(Structure of stopper)
As shown in FIG. 2, in this embodiment, the first connecting member 861 of the first yoke 86 used for the movable body 3 is provided on the first side X1 of the first case member 16 on the one side X1 in the second direction X. The inner surfaces of the wall portion 161, the first wall portion 61 of the holder 60, and the first wall portion 171 of the second case member 17 are opposed to each other in a state of forming a continuous plane. Therefore, the first connecting plate portion 861 serves as a first stopper that restricts the movable range of the movable body 3 in the one side X1 of the second direction X when the movable body 3 moves in the one side X1 of the second direction X. I am configuring.

Similarly, on the other side X2 in the second direction X with respect to the second connecting plate portion 862, the second wall portion 162 of the first case member 16, the second wall portion 62 of the holder 60, and the second case member 17 are provided. The inner surfaces of the second wall portions 172 of the two face each other in the state of forming a continuous plane. Therefore, the second connecting plate portion 862 has a second stopper that restricts the movable range of the movable body 3 to the other side X2 in the second direction X when the movable body 3 moves to the other side X2 in the second direction X. I am configuring.

(basic action)
In the actuator 1 of the present embodiment, when an alternating current is applied to the coil 7, the movable body 3 vibrates in the second direction X, so that the center of gravity of the actuator 1 changes in the second direction X. Therefore, the user can feel the vibration in the second direction X. At that time, by adjusting the AC waveform applied to the coil 7, the acceleration of the movable body 3 moving to the one side X1 in the second direction X and the acceleration of the movable body 3 moving to the other side X2 in the second direction. If they are different, the user can experience the directional vibration in the second direction X.

(Structures of the connection body 90 and the viscoelastic member 9)
As shown in FIG. 2, FIG. 4 and FIG. 5, a connecting body 90 for connecting to the support body 2 and the movable body 3 is provided. The connection body 90 includes at least one of elasticity and viscoelasticity. In the present embodiment, the connecting body 90 is the viscoelastic member 9 provided at a position where the support body 2 and the movable body 3 face each other in the first direction Z, and the first direction Z, the second direction X, and the third direction. It is elastically deformable in the direction Y. Viscoelasticity is a property that combines both viscosity and elasticity, and is a property remarkably found in polymer substances such as gel-like members, plastics, and rubber. Therefore, various gel-like members can be used as the viscoelastic member 9. As the viscoelastic member 9, natural rubber, diene rubber (for example, styrene/butadiene rubber, isoprene rubber, butadiene rubber), chloroprene rubber, acrylonitrile/butadiene rubber, etc., non-diene rubber (for example, butyl rubber, ethylene/propylene rubber) , Ethylene/propylene/diene rubber, urethane rubber, silicone rubber, fluororubber, etc.), thermoplastic elastomers, and various rubber materials and modified materials thereof.

In the present embodiment, only the viscoelastic member 9 as the connecting body 90 is connected to both the support body 2 and the movable body 3. In the present embodiment, as the viscoelastic member 9, the first viscoelastic member 91 is arranged at a position where the first yoke 86 of the movable body 3 and the first case member 16 of the support body 2 face each other in the first direction Z, The second viscoelastic member 92 is arranged at a position where the second yoke 87 of the movable body 3 and the second case member 17 of the support body 2 face each other in the first direction Z. More specifically, the first viscoelastic member 91 is provided between each of the flat plate portion 860 of the first yoke 86 and the bottom portions of the concave portions 166 and 167 of the first case member 16, and the second viscoelastic member 92. Are provided between the flat plate portion 870 of the second yoke 87 and the bottom portions of the recesses 176 and 177 of the second case member 17, respectively.

Here, the first viscoelastic member 91 is arranged in a state of being compressed in the first direction Z between the flat plate portion 860 of the first yoke 86 and the bottom portions of the concave portions 166 and 167 of the first case member 16. The two viscoelastic member 92 is arranged between the flat plate portion 870 of the second yoke 87 and the bottom portions of the recesses 176 and 177 of the second case member 17 in a compressed state in the first direction Z. The first viscoelastic member 91 is bonded to the surface in contact with the support body 2 (bottoms of the recesses 166 and 167 of the first case member 16) and to the surface in contact with the movable body 3 (first yoke 86). The second viscoelastic member 92 is adhered to the surface in contact with the support 2 (bottoms of the recesses 176 and 177 of the second case member 17) and to the surface in contact with the movable body 3 (second yoke 87).

In this embodiment, the viscoelastic member 9 (the first viscoelastic member 91 and the second viscoelastic member 92) is a silicone gel having a penetration of 10 to 110 degrees. The penetration degree is defined by JIS-K-2207 or JIS-K-2220, and the smaller the value, the harder it is. The viscoelastic member 9 has a linear or non-linear expansion/contraction characteristic depending on the expansion/contraction direction. For example, when the viscoelastic member 9 is pressed in the thickness direction (axial direction) and is compressed and deformed, the viscoelastic member 9 has expansion and contraction characteristics in which the nonlinear component (spring coefficient) is larger than the linear component (spring coefficient). On the other hand, when it is stretched by being pulled in the thickness direction (axial direction), it has expansion/contraction characteristics in which the linear component (spring coefficient) is larger than the nonlinear component (spring coefficient). On the other hand, when the viscoelastic member 9 is deformed in the direction (shear direction) intersecting the thickness direction (axial direction) as in the present embodiment, the deformation is in a direction in which the viscoelastic member 9 is pulled and stretched regardless of the movement. Therefore, it has a deformation characteristic in which the linear component (spring coefficient) is larger than the nonlinear component (spring coefficient). Therefore, in the viscoelastic member 9, the spring force depending on the movement direction is constant. Therefore, as in the present embodiment, by using the spring element of the viscoelastic member 9 in the shearing direction, the reproducibility of the vibration acceleration with respect to the input signal can be improved, so that the vibration with a subtle nuance is realized. be able to.

In the present embodiment, among the recesses 166 and 167 of the first case member 16, a plurality of recesses are formed in the connection regions 166a and 167a to which the first viscoelastic member 91 is connected. Further, among the recesses 176 and 177 of the second case member 17, a plurality of recesses are formed in the connection regions 176a and 177a to which the second viscoelastic member 92 is connected.

Further, since the connecting body 90 is compressed in the first direction Z, a part of the connecting body 90 is located inside the plurality of recesses. Therefore, the edges of the plurality of recesses prevent the connecting body 90 from moving in the direction intersecting the first direction Z. Therefore, when the connection body 90 is arranged between the support body 2 and the movable body 3, the edges of the plurality of recesses effectively suppress the movement of the connection body 90 in the direction intersecting the first direction Z. .. Further, when the movable body 3 is driven in the second direction X, the edges of the plurality of recesses effectively prevent the connecting body 90 from moving in the second direction X. Therefore, it is possible to suppress the positional displacement of the connection body 90 arranged between the support body 2 and the movable body 3. Further, the connection body 90 is fixed to the connection regions 166a, 167a, 176a, 177a via an adhesive, and a part of the adhesive is located inside the plurality of recesses. Therefore, the adhesive strength of the connection body 90 is high.

(Assembling process of actuator 1)
In this embodiment, the first case member 16, the first yoke 86, the holder 60, and the second case 86 are supported while the first yoke 86 is supported by the support pins (not shown) inserted from the through holes 16b of the first case member 16. When the yoke 87 is stacked in the first direction Z, the through hole 16a of the first case member 16, the cutout 869 of the first yoke 86, the cutout 603 of the holder 60, and the 2 The notch 879 of the yoke 87 is overlapped. Therefore, the first case member 16, the first yoke 86, the holder 60, and the second yoke 87 can be properly stacked.

At that time, the first connecting plate portion 861 of the first yoke 86 is projected toward the other side Z2 in the first direction Z through the first opening 601 of the holder 60, and the second connecting plate portion 862 of the holder 60. It is projected toward the other side Z2 in the first direction Z through the second opening 602. Therefore, each of the first connecting plate portion 861 and the second connecting plate portion 862 of the first yoke 86 can be connected to the second yoke 87.

In addition, the first viscoelastic member 91 is previously connected to one of the first case member 16 and the first yoke 86 by an adhesive agent, and when the first case member 16 and the first yoke 86 are overlapped with each other, the first case The first viscoelastic member 91 is connected to the other of the member 16 and the first yoke 86 with an adhesive. Further, the second viscoelastic member 92 is previously connected to one of the second case member 17 and the second yoke 87 by an adhesive agent, and when the second case member 17 and the second yoke 87 are stacked, the second case The second viscoelastic member 92 is connected to the other of the member 17 and the second yoke 87 with an adhesive. At that time, the support pin inserted from the through hole 16b is brought into contact with the notch 17b of the second case member 17 to support the second case member 17.

(Main effects of this embodiment)
As described above, in the actuator 1 of the present embodiment, the first yoke 86 is provided on the side opposite to the first coil 71 and the second coil 72 with respect to the first magnet 81 and the second magnet 82. The magnetic efficiency can be increased. Further, since the first yoke 86 is provided with the positioning projection 865 for positioning the first magnet 81 and the second magnet 82 in the in-plane direction, the first yoke 86 is provided with the first protrusion at a predetermined position on one surface of the first yoke 86. A magnet 81 and a second magnet 82 can be provided. Further, since the second yoke 87 is provided on the side opposite to the first coil 71 and the second coil 72 with respect to the first magnet 83 and the second magnet 84, the magnetic efficiency can be improved. Further, since the second yoke 87 is provided with the positioning protrusion 875 that positions the first magnet 83 and the second magnet 84 in the in-plane direction, the first yoke is provided at a predetermined position on one surface of the second yoke 87. A magnet 83 and a second magnet 84 can be provided. Further, since the positioning protrusions 865, 875 are portions where the first yoke 86 and the second yoke 87 are partly projected, even if the positioning protrusions 865, 875 are provided, an increase in cost can be suppressed. it can.

Particularly in the present embodiment, since the magnetic poles of the first magnet 81 on the second magnet 82 side and the magnetic poles of the second magnet 82 on the first magnet 81 side are different, when arranging the first magnet 81 and the second magnet 82 , The attraction acts, but the first magnet 81 defines the position on the second magnet 82 side by the first convex portion 865a, and the second magnet 82 defines the position on the first magnet 81 side by the second convex portion 865b. It Therefore, the first magnet 81 and the second magnet 82 can be arranged at predetermined positions on one surface of the first yoke 86. Further, since the magnetic pole of the first magnet 83 on the second magnet 84 side is different from the magnetic pole of the second magnet 84 on the first magnet 83 side, an attractive force is exerted when the first magnet 83 and the second magnet 84 are arranged. Although acting, the position of the first magnet 83 on the second magnet 84 side is defined by the first convex portion 875a, and the position of the second magnet 84 on the first magnet 83 side is defined by the second convex portion 875b. Therefore, the first magnet 83 and the second magnet 84 can be arranged at predetermined positions on the one surface of the second yoke 87. Further, the first convex portion 865a and the second convex portion 865b are composed of a common convex portion 865c, and the first convex portion 875a and the second convex portion 875b are composed of a common convex portion 875c. Therefore, the first yoke 86 and the second yoke 87 can be efficiently processed.

Further, the first magnet 81 and the second magnet 82 are arranged at the predetermined positions of the first yoke 86 in the third direction Y by the third convex portion 865d and the third convex portion 865e. Further, the first magnet 83 and the second magnet 84 are arranged at predetermined positions of the second yoke 87 by the third convex portion 875d and the third convex portion 875e. Therefore, the first magnets 81 and 83 and the second magnets 82 and 84 are properly arranged with respect to the first coil 71 and the second coil 72, so that the magnetic efficiency can be improved.

[Another embodiment]
FIG. 12 is an explanatory diagram of an actuator 1 according to another embodiment of the present invention. In the actuator 1 according to the above-described embodiment, the positioning protrusion 875 causes a part of the flat plate portion 870 of the second yoke 87 to protrude from the other surface side opposite to the magnet 8 to the one surface side where the magnet 8 is located. However, as shown in FIG. 12, the positioning protrusion 875 may be a protrusion obtained by bending a part of the second yoke 87. FIG. 12 shows an example in which the positioning protrusion 875 is formed by a protrusion formed by cutting and raising a part of the second yoke 87. Although not shown, the positioning protrusion 865 may be formed by bending a part of the first yoke 86 instead of the positioning protrusion 865 described with reference to FIG. 9.

[Other Embodiments]
Although the two magnets 8 (the first magnet 81 and the second magnet 82) are included in the above-described embodiment, for example, the magnet 8 is arranged only on one side Z1 of the first direction Z with respect to the coil 7. The present invention may be applied to the case where only the second yoke 87 is present on the other side Z2 in the first direction Z.

Although a gel-like member such as a silicone gel is used as the viscoelastic member 9 in the above embodiment, rubber or the like may be used as the viscoelastic member. Further, in the above embodiment, the viscoelastic member 9 is used as the connecting body 90, but an elastic member such as a spring may be used.

In the above embodiment, the coil and the holder are provided on the support body 2 and the magnet and the yoke are provided on the movable body 3. However, the coil and the holder are provided on the movable body 3, and the magnet and the yoke are provided on the support body 2. The present invention may be applied to such cases. In the above embodiment, the present invention is applied to the actuator 1 that drives the movable body 3 only in the second direction X, but the present invention is applied to the actuator 1 that drives the movable body 3 in the second direction X and the third direction Y. You may.

DESCRIPTION OF SYMBOLS 1... Actuator, 2... Support body, 3... Movable body, 6... Magnetic drive circuit, 7... Coil, 8... Magnet, 9... Viscoelastic member, 15... Wiring board, 16... First case member, 17... Second Case member, 60... Holder, 71... First coil, 72... Second coil, 81, 83... First magnet, 82, 84... Second magnet, 86... First yoke, 86s, 87s... Mark, 87... 2 yoke, 90... Connection body, 91... 1st viscoelastic member, 92... 2nd viscoelastic member, 166a, 167a, 176a, 177a... Connection area, 601... 1st opening part, 602... 2nd opening part, 701 ... Long side, 702... Short side, 800... Cartridge, 860, 870... Flat plate part, 861... First connecting plate part, 862... Second connecting plate part, 865, 875... Positioning convex part, 865a, 875a... First Convex part, 865b, 875b... second convex part, 865c... convex part, 865d, 865e, 875d, 875e... third convex part, 865x, 875x... mark, X... second direction, Y... third direction, Z... First direction

Claims (12)

A support,
A movable body,
A connector having at least one of elasticity and viscoelasticity, which is connected to the movable body and the support,
Magnetic drive circuit,
Equipped with
The magnetic drive circuit includes a first coil provided on one side member of the support and the movable body, and one of the support and the movable body with one surface facing the first coil. The movable body is provided in the first direction, the yoke being provided on the other member, and the first magnet held on the one surface of the yoke so as to face the first coil in the first direction. Drive in the second direction that intersects with each other,
An actuator, wherein the yoke has a positioning convex portion for positioning the first magnet in the in-plane direction of the yoke by protruding a part of the yoke from the one surface. The actuator according to claim 1,
The magnetic drive circuit includes a second magnet held on the one surface of the yoke so as to be adjacent to the first magnet,
A magnetic pole on the second magnet side of the first magnet and a magnetic pole on the first magnet side of the second magnet are different,
The positioning protrusion includes a first protrusion that defines a position of the first magnet on the second magnet side, and a second protrusion that defines a position of the second magnet on the first magnet side. An actuator characterized by the following. The actuator according to claim 2,
The magnetic drive circuit includes a second coil provided on the one side member so as to be adjacent to the first coil,
The actuator is characterized in that the second magnet faces the second coil in the first direction. The actuator according to claim 2 or 3,
The actuator, wherein the first convex portion and the second convex portion are common convex portions. The actuator according to any one of claims 2 to 4,
An actuator characterized in that the first magnet and the second magnet are adjacent to each other in the second direction. The actuator according to any one of claims 2 to 5,
The positioning convex portion includes a third convex portion that positions the first magnet and the second magnet in a direction intersecting a direction in which the first magnet and the second magnet are adjacent to each other. An actuator characterized by: The actuator according to any one of claims 2 to 6,
The actuator is characterized in that a protrusion dimension of the positioning protrusion from the one surface is lower than a thickness of the first magnet and a thickness of the second magnet. The actuator according to claim 7,
The positioning protrusion is not provided on the side of the yoke opposite to the second magnet with respect to the first magnet and on the side of the second magnet opposite to the first magnet. Actuator. The actuator according to any one of claims 1 to 8,
The actuator is characterized in that the positioning protrusion is a protrusion obtained by projecting a part of the yoke from a surface opposite to the one surface. The actuator according to any one of claims 1 to 7,
The actuator is characterized in that the positioning protrusion is a protrusion obtained by bending a part of the yoke. The actuator according to any one of claims 1 to 10,
An actuator characterized in that at least one of the first magnet and the yoke is provided with a mark indicating a magnetization direction with respect to the first magnet. The method for manufacturing an actuator according to claim 7 or 8,
In the step of arranging the first magnet and the second magnet on the yoke, the magnet located at the lowermost of the plurality of magnets stacked inside the cartridge is slid to move the first magnet and the second magnet. A method for manufacturing an actuator, wherein a magnet is arranged on the one surface of the yoke.

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