WO2024101363A1 - Actionneur - Google Patents

Actionneur Download PDF

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Publication number
WO2024101363A1
WO2024101363A1 PCT/JP2023/040086 JP2023040086W WO2024101363A1 WO 2024101363 A1 WO2024101363 A1 WO 2024101363A1 JP 2023040086 W JP2023040086 W JP 2023040086W WO 2024101363 A1 WO2024101363 A1 WO 2024101363A1
Authority
WO
WIPO (PCT)
Prior art keywords
main body
coil
terminal
actuator
wall portion
Prior art date
Application number
PCT/JP2023/040086
Other languages
English (en)
Japanese (ja)
Inventor
義一 岡崎
雄一 森田
信一郎 永井
Original Assignee
フォスター電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by フォスター電機株式会社 filed Critical フォスター電機株式会社
Publication of WO2024101363A1 publication Critical patent/WO2024101363A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism

Definitions

  • This disclosure relates to actuators.
  • the present disclosure aims to provide an actuator that can suppress the effect of temperature changes in members arranged around an elastic support on the elastic support.
  • the actuator according to the first aspect comprises a main body having a coil, a mover having a magnet and displaced in a first direction relative to the main body when current is passed through the coil, and an elastic support disposed on one side of the mover in the first direction and including a plurality of fixed parts fixed to the main body, and a deformation part provided continuously with the fixed parts and capable of elastic deformation in response to the displacement of the mover, the main body including a metal skeleton including an extension part extending in a second direction perpendicular to the first direction and connecting between the fixed parts to which the fixed parts are fixed, and a resin reinforcing part covering at least a part of the skeleton.
  • a moving element equipped with a magnet when electricity is passed through a coil provided in the main body, a moving element equipped with a magnet is displaced in a first direction relative to the main body.
  • an elastic support is disposed on one side of the moving element in the first direction, and this elastic support has a plurality of fixed portions fixed to the main body and a deformation portion provided continuously with the fixed portions.
  • the deformation portion elastically deforms in response to the displacement of the mover, and the force generated in the deformation portion at this time displaces the mover to the other side in the first direction.
  • this operation by repeating this operation, it is possible to transmit vibrations from the actuator to the outside.
  • the coil heats up, and the main body is exposed to the heat generated by the coil.
  • the main body is mainly made of resin, the heat generated by the coil may cause the main body to deform, which may affect the elastic support.
  • the main body has a skeleton made of metal, which is less susceptible to deformation due to heat than resin, and this skeleton includes an extension portion that extends in a second direction perpendicular to the first direction.
  • the extension portion connects the fixed portions to which the fixing portions of the elastic support are fixed.
  • At least a portion of the skeletal portion is covered with a resin reinforcing portion, and this reinforcing portion can protect the skeletal portion from external forces, etc.
  • a configuration in which at least a portion of the skeletal portion is covered with a resin reinforcing portion also includes a configuration in which the reinforcing portion is in contact with a portion of the skeletal portion.
  • the actuator according to the second aspect is the actuator according to the first aspect, in which the extension portion connects the fixed portions at least in the longitudinal direction of the main body portion.
  • the extension of the skeleton connects the fixed parts at least in the longitudinal direction of the main body. This makes it possible to prevent the relative positions of the fixed parts from shifting due to thermal expansion of the reinforcing parts in the longitudinal direction of the main body, where deformation due to thermal expansion of the resin reinforcing parts is likely to become large.
  • the actuator according to the third aspect is the actuator according to the second aspect, in which the skeleton portion includes a base portion, and the coil is supported by the base portion via a member.
  • the coil is supported on the base of the skeleton via a member. Therefore, heat generated in the coil can be transferred to the base and dissipated.
  • the actuator according to the fourth aspect is the actuator according to the third aspect, wherein the main body further comprises a bobbin that supports the coil and a pair of metal terminals that are integral with the bobbin, and the terminals comprise a wiring connection portion to which wiring from a power supply source is connected, a terminal connection portion to which a terminal portion of the coil is connected, and a narrow portion that is provided between the wiring connection portion and the terminal connection portion and that is narrowed in the width direction.
  • a pair of metal terminals are integrally provided on the bobbin that supports the coil. These terminals have narrow portions that are narrowed in the width direction between the wiring connection portion to which the wiring on the power supply side is connected and the terminal connection portion to which the terminal portion of the coil is connected. Therefore, in this aspect, heat generated when connecting wiring to the wiring connection portion of the terminal using solder or the like is transferred to the coil via the narrow portions, and the coil can be prevented from becoming hot due to the heat.
  • the actuator according to the fifth aspect is the actuator according to the fourth aspect, in which the main body is provided with a through-hole at a position overlapping the terminal when viewed from the first direction, and a portion of the terminal is exposed from the through-hole when viewed from the other side of the first direction.
  • a through-hole is provided in the main body at a position that overlaps with the terminal when viewed from the first direction. When viewed from the other side of the first direction, a part of the terminal is exposed from this through-hole. Therefore, in this aspect, the test lead of the circuit meter can be brought into contact with the terminal from outside the main body to check the electrical continuity between the terminal and the coil, etc.
  • the actuator disclosed herein has the excellent effect of suppressing the effect of temperature changes in members arranged around the elastic support on the elastic support.
  • FIG. 1 is a perspective view showing an overall configuration of an actuator according to an embodiment of the present invention.
  • FIG. 2 is an exploded perspective view showing the configuration of the actuator according to the present embodiment.
  • FIG. 2 is an exploded perspective view showing the configuration of a main body of the actuator according to the present embodiment.
  • 3 is a plan view showing the configuration of a skeleton that constitutes a part of a main body of the actuator in this embodiment.
  • FIG. 5 is a cross-sectional view showing the configuration of a case of the actuator according to the present embodiment (a cross-sectional view showing a state cut along line 5-5 in FIG. 2).
  • 4 is a plan view showing a configuration of members around a coil in the actuator according to the present embodiment.
  • FIG. 1 is a perspective view showing an overall configuration of an actuator according to an embodiment of the present invention.
  • FIG. 2 is an exploded perspective view showing the configuration of the actuator according to the present embodiment.
  • 3 is a plan view showing the configuration of a skeleton that constitute
  • FIG. 7 is a cross-sectional view (corresponding to the cross section taken along line 7-7 in FIG. 4) showing the configuration of a skeleton that constitutes a part of a main body of the actuator in this embodiment and its peripheral members.
  • FIG. 8 is a cross-sectional view (corresponding to the cross section taken along line 8-8 in FIG. 6) showing the configuration of members around a coil in the actuator according to the present embodiment.
  • FIG. 9 is a bottom view (view taken in the direction of the arrow 9 in FIG. 2 ) showing the configuration of a main body of the actuator according to the present embodiment.
  • FIG. 11 is a bottom view showing the configuration of a main body of an actuator according to a modified example of the present embodiment.
  • FIG. 11 is a side view showing the configuration of a main body of an actuator according to a modified example of the present embodiment.
  • the "actuator 10" according to an embodiment of the present disclosure will be described with reference to Figures 1 to 9.
  • the direction of arrow X, the direction of arrow Y, and the direction of arrow Z shown in each figure indicate the respective directions of the actuator 10.
  • the direction indicated by arrow Z is set to the up-down direction of the actuator 10, and one of the directions indicated by arrow X, the direction indicated by arrow Y, and the direction indicated by arrow Z is perpendicular to the remaining two directions.
  • this is a directional concept based on the actuator 10, and does not limit the mounting posture of the actuator 10.
  • the direction indicated by arrow Z will be referred to as the first direction
  • the direction indicated by arrow X will be referred to as the second direction
  • the direction indicated by arrow Y will be referred to as the third direction.
  • an axis parallel to the first direction and passing through the center of gravity of the mover 14 is defined as the center of gravity axis AX of the mover 14.
  • the direction approaching the center of gravity axis AX of the mover 14 is defined as the second direction inward
  • the direction moving away is defined as the second direction outward
  • the direction approaching the center of gravity axis AX of the mover 14 is defined as the third direction inward
  • the direction moving away is defined as the third direction outward.
  • the +X direction is defined as one side of the second direction
  • the -X direction is defined as the other side of the second direction
  • the +Y direction is defined as one side of the third direction
  • the -Y direction is defined as the other side of the third direction
  • the +Z direction is defined as one side of the first direction
  • the -Z direction is defined as the other side of the first direction.
  • the actuator 10 can be attached to a display unit such as a liquid crystal panel configured as a touch panel, or to various controllers, making it possible to vibrate these.
  • a display unit such as a liquid crystal panel configured as a touch panel
  • various controllers making it possible to vibrate these.
  • the actuator 10 includes a "main body 12" that is attached to an attachment target such as the display unit of a tablet terminal, a “movable element 14" that displaces relative to the main body 12, an “elastic support 16” that elastically supports the moveable element 14 relative to the main body 12, and a “first cable 18" and a “second cable 20” that serve as wiring.
  • the main body 12 includes a case 22 that constitutes its main portion, a "coil 24" that is circular when viewed from a first direction, a "bobbin 26" that supports the coil 24, a “support plate 28” that serves as a support portion that supports the bobbin 26 relative to the case 22, a "first terminal 30," a “second terminal 32,” and an adhesive sheet 34 for attachment.
  • Case 22 includes side wall portion 22A constituting one side in the second direction, side wall portion 22B constituting the other side in the second direction, side wall portion 22C constituting one side in the third direction, side wall portion 22D constituting the other side in the third direction, and bottom wall portion 22E constituting the other side in the first direction.
  • Case 22 is generally rectangular in shape with its longitudinal direction as the second direction when viewed from the first direction, and is box-shaped with one side in the first direction open. In other words, the width direction of case 22 is the third direction.
  • a through-hole 36 is provided in the center of the bottom wall 22E, and this through-hole 36 has a circular periphery that follows the outer periphery of the coil 24 when viewed from the first direction.
  • the periphery of the through-hole 36 has a portion on the other side in the second direction and one side in the third direction that is recessed in an arc shape that protrudes outward in the third direction, forming a "maintenance hole portion 36A" as a through-hole.
  • peripheral portion of the through-hole 36 is recessed in an arc shape that protrudes outward in the third direction at the portion on the other side in the second direction and the other side in the third direction, forming a "maintenance hole portion 36B" that functions as a through-hole.
  • the case 22 is configured by integrally molding a metal "skeleton 38" and a resin "reinforcement 40.”
  • the configuration in which the skeleton 38 and the reinforcement 40 are integrally molded also includes a configuration in which the reinforcement 40 is in contact with a part of the skeleton 38.
  • the skeleton 38 is constructed by punching out and bending a single metal plate into a predetermined shape, and includes a side wall 38A constituting one side in the second direction, a side wall 38B constituting one side in the third direction, a side wall 38C constituting the other side in the third direction, and a "bottom wall 38D" as a base constituting the other side in the first direction.
  • the side wall portion 38A is plate-shaped with the plate thickness direction being the second direction, and functions as the core material of the side wall portion 22A, with most of it being embedded in the reinforcing portion 40.
  • the main part of the side wall portion 38B is plate-shaped with the plate thickness direction being the third direction, and is composed of the main wall portion 38B1, the "extension portion 38B2" and a pair of "pedestal portions 38B3", and functions as the core material of the side wall portion 22C.
  • the main wall portion 38B1 constitutes the other side of the side wall portion 38B in the first direction, and is connected to the bottom wall portion 38D.
  • the extension portion 38B2 extends in the second direction and is arranged along the peripheral edge of the side wall portion 22C on one side in the first direction.
  • a base portion 38B3 is provided at the end of the extension portion 38B2 on one side in the second direction and at the end of the extension portion 38B2 on the other side in the second direction. In other words, the extension portion 38B2 connects the base portions 38B3 together.
  • the base portion 38B3 is plate-shaped with the plate thickness direction being the first direction, and is exposed from the reinforcing portion 40 when viewed from one side in the first direction.
  • the elastic support 16 is attached to the base portion 38B3, as described below. In other words, the base portion 38B3 functions as a fixed portion.
  • side wall portion 38C is composed of main wall portion 38C1, "extension portion 38C2" and a pair of “pedestal portions 38C3", and is configured symmetrically with side wall portion 38B in the third direction, and functions as a core material for side wall portion 22D.
  • elastic support 16 is attached to pedestal portion 38C3, as described below.
  • pedestal portion 38C3 functions as a fixed portion.
  • the bottom wall portion 38D is plate-shaped with the plate thickness direction being the first direction, and functions as the core material of the bottom wall portion 22E, while also connecting the side wall portion 38B and the side wall portion 38C in the third direction.
  • the above-mentioned through portion 36 is formed in this bottom wall portion 38D.
  • the portion of the bottom wall portion 38D on one side in the second direction is exposed from the reinforcing portion 40.
  • the base portion 38B3 is located at a corner on one side of the case 22 in the third direction when viewed from the first direction, and the reinforcement portion 40 is provided with a pair of protrusions 40A that protrude from the bottom wall portion 22E side toward one side in the first direction and have the base portion 38B3 as their apex.
  • the base portion 38C3 is located at a corner on the other side of the third direction of the case 22 when viewed from the first direction, and the reinforcing portion 40 is provided with a pair of protrusions 40B that protrude from the bottom wall portion 22E side toward one side in the first direction and have the base portion 38C3 as their apex.
  • the reinforcing portion 40 is provided with a central protrusion 40C that is located between the protrusions 40A and 40B in the third direction and that protrudes from the bottom wall portion 22E side to one side in the first direction.
  • the top of this central protrusion 40C is the attachment surface portion 40C1 to which the cushioning material 42 described below is attached.
  • the reinforcing portion 40 is provided with a central protrusion 40D that is located between the protrusions 40A and 40B in the third direction and that protrudes from the bottom wall portion 22E side to one side in the first direction.
  • the top of the central protrusion 40D is an attachment surface portion 40D1 to which the cushioning material 42 described below is attached.
  • the coil 24 is constructed by winding a conductive electric wire in a ring shape around the first direction, and as described below, a pair of "terminal portions 24A" are electrically connected to the first terminal 30 and the second terminal 32.
  • the bobbin 26 is made of resin and has a cylindrical shape with the axial direction being the first direction, and as shown in FIG. 8, the coil 24 is held by a groove 26A provided on the outer circumferential surface.
  • the bobbin 26 is supported by the bottom wall 38D of the skeleton 38 via the support plate 28.
  • the support plate 28 is constructed by punching and bending a single metal plate into a predetermined shape, and includes a joint wall portion 28A and a rising wall portion 28B.
  • the plate thickness direction of the joint wall portion 28A is the first direction, and when viewed from the first direction, the joint wall portion 28A is in the form of a plate that extends from the outer periphery of the coil 24 to the opposite side of the coil 24 on one side of the coil 24 in the second direction.
  • the joint wall portion 28A is joined to the exposed surface of the bottom wall portion 38D at a joint (not shown) made by welding or the like.
  • the rising wall portion 28B extends from the peripheral portion of the joining wall portion 28A on the coil 24 side in the first direction, and its main portion is embedded in the bobbin 26.
  • the bobbin 26 and the support plate 28 can be considered to be a single integrally molded part.
  • the first terminal 30 is disposed on one side in the third direction with respect to the center of the case 22 when viewed from the first direction.
  • This first terminal 30 is constructed by punching out and bending a single metal plate into a predetermined shape, and includes a "first connection wall portion 30A" as a wiring connection portion, a "second connection wall portion 30B” as a terminal connection portion, and a "narrow width portion 30C" provided between the first connection wall portion 30A and the second connection wall portion 30B.
  • the first connection wall portion 30A is plate-shaped with the plate thickness direction being the first direction, and constitutes the other side of the first terminal 30 in the second direction.
  • the end of the first cable 18 is joined to the first connection wall portion 30A at a joint (not shown) by soldering or the like.
  • the second connection wall portion 30B is plate-shaped with its thickness direction aligned with the radial direction of the coil 24, and extends along the circumferential direction of the coil 24.
  • One terminal portion 24A of the coil 24 is joined to the end portion of the second connection wall portion 30B on the central side of the main body portion 12 in the third direction at a joint (not shown) made by soldering or the like.
  • a part of the second connection wall portion 30B is embedded in the bobbin 26.
  • the narrow width portion 30C is plate-shaped with the plate thickness direction being the first direction, and the length in the third direction as viewed from the first direction is shorter than the length in the third direction of the first connecting wall portion 30A. In other words, the width of the first terminal 30 is narrowed in the third direction at the narrow width portion 30C.
  • the second terminal 32 is disposed on the other side in the third direction with respect to the center of the case 22 when viewed from the first direction.
  • This second terminal 32 includes a "first connection wall 32A" as a wiring connection portion, a “second connection wall 32B” as a terminal connection portion, and a “narrow width portion 32C" provided between the first connection wall 32A and the second connection wall 32B, and is configured symmetrically with the first terminal 30 in the third direction.
  • the end of the second cable 20 is joined to the first connection wall 32A at a joint (not shown) by soldering or the like, and the other terminal portion 24A of the coil 24 is joined to the end of the second connection wall 32B on the center side of the third direction of the main body portion 12 at a joint (not shown) by soldering or the like.
  • the mounting adhesive sheet 34 is an adhesive sheet with adhesive surfaces on both sides, and is adhered to the other surface in the first direction of the bottom wall portion 22E of the case 22.
  • the mounting adhesive sheet 34 is used to attach the actuator 10 to an object to which it is to be attached.
  • the mounting adhesive sheet 34 is also formed with a circular through-hole 44 that corresponds to the main portion of the through-hole 36 formed in the bottom wall portion 22E of the case 22, and a pair of "through-holes 46" that correspond to the maintenance hole portions 36A and 36B.
  • the mover 14 includes a yoke 48 , a magnet 50 , and a pole piece 52 .
  • the yoke 48 is made of a soft magnetic material and has a disk-shaped top wall portion 48A with the plate thickness direction being the first direction, and a peripheral wall portion 48B extending from the outer periphery of the top wall portion 48A to the other side in the first direction.
  • the magnet 50 is formed in a disk shape with its axial direction in the first direction.
  • the magnet 50 is fixed to the surface of the top wall portion 48A of the yoke 48 on the other side in the first direction, while being disposed inside the peripheral wall portion 48B of the yoke 48.
  • the pole piece 52 is made of a soft magnetic material. This pole piece 52 is formed in a disk shape with its axial direction in the first direction, and is fixed to the surface of the magnet 50 on the other side in the first direction.
  • a magnetic circuit is formed by the yoke 48, magnet 50, and pole piece 52.
  • a space is provided between the magnet 50 and pole piece 52 and the peripheral wall portion 48B of the yoke 48, and the coil 24 is disposed in this space.
  • the mover 14 is displaced (vibrates) in the first direction.
  • the elastic support 16 is, for example, configured using a metal plate formed into a plate shape (flat plate shape). In its free state (a state in which no external force is acting), the elastic support 16 is in a state in which the entire elastic support 16 extends along a direction perpendicular to the first direction.
  • the elastic support 16 When viewed from the first direction, the elastic support 16 has "outer fixed pieces 16A" as fixed parts at its four corners, and a disk-shaped inner fixed piece 16B in the center.
  • the outer fixed pieces 16A connected in the third direction are connected to each other by connecting pieces 16C that extend in the third direction.
  • the outer fixed pieces 16A and the inner fixed pieces 16B are connected by a pair of "deformable pieces 16D" as deformable parts.
  • the pair of outer fixing pieces 16A on one side in the third direction are each joined to the base portion 38B3 of the skeleton portion 38 at joints (not shown) by welding or the like, and the pair of outer fixing pieces 16A on the other side in the third direction are each joined to the base portion 38C3 at joints (not shown) by welding or the like.
  • the inner fixed piece 16B is joined to one surface in the first direction of the top wall portion 48A of the yoke 48 at a joint (not shown) by welding or the like.
  • the elastic support 16 configured as described above is designed so that when the movable element 14 is displaced in the first direction, the deformation piece portion 16D elastically deforms in response to the displacement.
  • a cushioning material 42 is arranged on the other side of the connecting piece portion 16C of the elastic support 16 in the first direction
  • a cover member 54 is arranged on one side of the connecting piece portion 16C of the elastic support 16 in the first direction.
  • the cushioning material 42 is formed into a plate shape using a material having viscoelasticity, the plate thickness direction is the first direction, and the cushioning material 42 is rectangular when viewed from the first direction.
  • the surface of the cushioning material 42 on the other side in the first direction (lower surface) and the surface of the cushioning material 42 on one side in the first direction (upper surface) each serve as an adhesive surface that can be bonded to other members.
  • the adhesive surface on the other side of the first direction of one of the cushioning materials 42 is attached to the attachment surface portion 40C1 of the case 22, and the adhesive surface on one side of the first direction of this cushioning material 42 is attached to the deforming piece portion 16D and a part of the connecting piece portion 16C on one side of the second direction.
  • the adhesive surface of the other cushioning material 42 on the other side in the first direction is attached to the attachment surface portion 40D1 of the case 22, and the adhesive surface of this cushioning material 42 on one side in the first direction is attached to the deformed piece portion 16D and a part of the connecting piece portion 16C on the other side in the second direction.
  • the cover member 54 is formed in a plate shape using a viscoelastic material, the plate thickness direction is the first direction, and the cover member 54 is rectangular when viewed from the first direction.
  • the surface (lower surface) of the cover member 54 on the other side in the first direction is an adhesive surface that can be bonded to other members.
  • the surface (upper surface) of the cover member 54 on one side in the first direction is not an adhesive surface.
  • the adhesive surface of the cover member 54 is attached to the adhesive surface on the upper surface side of the cushioning material 42 and to the surface on one side in the first direction of the connecting piece portion 16C.
  • the first cable 18 and the second cable 20 are configured such that a conductive member such as a copper wire is covered with an insulating covering member, for example.
  • the first cable 18 is inserted into the main body 12 through a communication hole 58 (see FIG. 9) formed in the central protrusion 40D. The end of the first cable 18 is then joined to the first terminal 30 as described above.
  • the second cable 20 is inserted into the main body 12 through a communication hole 56 (see FIG. 9) formed in the central protrusion 40D.
  • the end of the second cable 20 is joined to the second terminal 32 as described above.
  • the first cable 18 and the second cable 20 are electrically connected to a power supply source (not shown).
  • the coil 24 heats up, and the main body 12 is exposed to the heat generated by the coil 24. If the main body 12 is mainly made of resin, the heat generated by the coil 24 may cause the main body 12 to deform, which may affect the elastic support 16.
  • the main body 12 has a skeleton 38 made of metal that is less susceptible to deformation due to heat than resin, and this skeleton 38 includes an extension portion 38B2 and an extension portion 38C2 that extend in the second direction.
  • the extension portion 38B2 connects the base portions 38B3 to which the outer fixing pieces 16A are fixed, and the extension portion 38C2 connects the base portions 38C3 to which the outer fixing pieces 16A are fixed.
  • a portion of the skeletal portion 38 is covered with a resin reinforcing portion 40, which can protect the skeletal portion 38 from external forces, etc.
  • the extension portion 38B2 of the skeleton portion 38 connects the pedestal portions 38B3 in the second direction, and the extension portion 38C2 connects the pedestal portions 38C3. Therefore, in the second direction in which deformation due to thermal expansion of the resin reinforcement portion 40 is likely to increase, it is possible to prevent the relative positions of the fixed portions 38B3 and the fixed portions 38C3 from shifting due to thermal expansion of the reinforcement portion 40.
  • the coil 24 is supported on the bottom wall portion 38D of the skeleton portion 38 via the bobbin 26 and the support plate 28. Therefore, heat generated in the coil 24 can be transferred to the bottom wall portion 38D and dissipated.
  • a first terminal 30 and a second terminal 32 made of metal are integrally provided on the bobbin 26 supporting the coil 24.
  • the first terminal 30 has a narrow portion 30C narrowed in the third direction between a first connection wall 30A to which the first cable 18 on the power supply source side is connected and a second connection wall 30B to which the terminal portion 24A of the coil 24 is connected.
  • the second terminal 32 has a narrow portion 32C narrowed in the third direction between a first connection wall 32A to which the second cable 20 on the power supply source side is connected and a second connection wall 32B to which the terminal portion 24A of the coil 24 is connected.
  • the heat generated when the first cable 18 is connected to the first connection wall portion 30A of the first terminal 30 using solder or the like is transferred to the coil 24 via the narrow portion 30C.
  • the heat generated when the second cable 20 is connected to the first connection wall portion 32A of the second terminal 32 using solder or the like is transferred to the coil 24 via the narrow portion 32C.
  • the coil 24 can be prevented from becoming hot due to the heat generated when the first cable 18 and the second cable 20 are connected.
  • a maintenance hole portion 36A and a through portion 46 are provided at a position on the main body portion 12 that overlaps with the first terminal 30 when viewed from the first direction. Also, a maintenance hole portion 36B and a through portion 46 are provided at a position on the main body portion 12 that overlaps with the second terminal 32 when viewed from the first direction.
  • test leads of the circuit meter can be brought into contact with the first terminal 30 and the second terminal 32 from the outside of the main body portion 12 to check the electrical continuity between them and the coil 24, etc.
  • the elastic support 16 and the skeletal portion 38 are both made of metal, which makes it possible to prevent differences in the amount of deformation that occurs when they deform due to thermal expansion.
  • the actuator 10 can suppress the effect of temperature changes in the members arranged around the elastic support 16 on the elastic support 16.
  • the portion of the bottom wall portion 62A of the case 62 corresponding to the case 22 on the other side in the second direction is provided with a storage recess 64 that is open on the other side in the first direction and that stores a portion of the first cable 18 and the second cable 20, a "maintenance hole portion 66" as a through-hole corresponding to the maintenance hole portion 36A, and a "maintenance hole portion 68" corresponding to the maintenance hole portion 36B.
  • the storage recess 64 includes a first guide portion 64A that corresponds to the communication hole 56 and extends in the second direction, a first guide portion 64B that corresponds to the communication hole 58 and extends in the second direction, a junction portion 64C where the first guide portion 64A and the first guide portion 64B join, a second guide portion 64D that extends from the junction portion 64C to one side in the second direction and one side in the third direction, and a second guide portion 64E that extends from the junction portion 64C to one side in the second direction and the other side in the third direction.
  • the maintenance hole portion 66 is provided contiguous with the second guide portion 64D, and the maintenance hole portion 68 is provided contiguous with the second guide portion 64E.
  • the first connection wall portion 30A is disposed on one side in the first direction of the maintenance hole portion 66, and the first connection wall portion 32A is disposed on one side in the first direction of the maintenance hole portion 68.
  • the first cable 18 passes through the first guide portion 64B, the junction portion 64C, and the second guide portion 64D, and inside the maintenance hole portion 66, its end portion is joined to the first connection wall portion 30A from the other side in the first direction at a joint portion (not shown) by soldering or the like.
  • the second cable 20 passes through the first guide section 64A, the junction section 64C, and the second guide section 64E, and inside the maintenance hole section 68, its end is joined to the first connection wall section 32A from the other side in the first direction at a joint section (not shown) by soldering or the like.
  • this modified example can simplify the manufacturing process of the actuator 60.
  • the skeleton 38 is formed by punching and bending a single metal plate into a predetermined shape, but the skeleton 38 may be formed of a plurality of metal members.
  • the skeleton 38 may be formed of a plurality of parts, including a part that is formed into a rectangular frame shape when viewed from the first direction and in which the parts corresponding to the extension portion 38B2, the pedestal portion 38B3, the extension portion 38C2, and the pedestal portion 38C3 are integrated, and a box-shaped part that is open to one side in the first direction and in which the parts corresponding to the side wall portion 38A, the main wall portion 38B1, the main wall portion 38C1, and the bottom wall portion 38D are integrated.
  • the elastic support 16 is made of metal, but it is also possible to use an elastic support made of resin or cloth depending on the specifications of the actuator 10.
  • the coil 24 is supported on the case 22 via the bobbin 26.
  • the actuator 10 it is also possible to adopt a configuration in which the coil 24 is directly supported on the case 22.
  • the maintenance hole portion 36A is provided in the bottom wall portion 22E of the case 22, but the location where the maintenance hole portion is provided is not limited to the above embodiment.
  • the maintenance hole portion may be provided in the side wall portion 22A or the side wall portion 22B of the case 22 depending on the specifications of the actuator 10, etc.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnets (AREA)

Abstract

L'invention concerne un actionneur (10) comprenant une partie de corps (12) comportant une unité de cadre (38) constituée de métal, qui est moins sensible à la déformation provoquée par la chaleur par rapport à la résine. L'unité de cadre (38) comprend une partie d'extension (38B2) et une partie d'extension (38C2) qui s'étendent dans une seconde direction. En outre, la partie d'extension (38B2) fournit une connexion entre des unités de socle (38B3) auxquelles l'unité de pièce fixe externe (16A) est fixée, et la partie d'extension (38C2) fournit une connexion entre des unités de socle (38C3) auxquelles l'unité de pièce fixe externe (16A) est fixée.
PCT/JP2023/040086 2022-11-08 2023-11-07 Actionneur WO2024101363A1 (fr)

Applications Claiming Priority (2)

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JP2022178972 2022-11-08
JP2022-178972 2022-11-08

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WO2024101363A1 true WO2024101363A1 (fr) 2024-05-16

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006320892A (ja) * 2005-04-18 2006-11-30 Sony Corp 振動装置、噴流発生装置及び電子機器
WO2020184439A1 (fr) * 2019-03-14 2020-09-17 フォスター電機株式会社 Actionneur et dispositif d'affichage équipé de ce dernier
WO2022209908A1 (fr) * 2021-03-30 2022-10-06 フォスター電機株式会社 Actionneur de vibration

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006320892A (ja) * 2005-04-18 2006-11-30 Sony Corp 振動装置、噴流発生装置及び電子機器
WO2020184439A1 (fr) * 2019-03-14 2020-09-17 フォスター電機株式会社 Actionneur et dispositif d'affichage équipé de ce dernier
WO2022209908A1 (fr) * 2021-03-30 2022-10-06 フォスター電機株式会社 Actionneur de vibration

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