WO2022143043A1 - Vibreur et dispositif électronique - Google Patents

Vibreur et dispositif électronique Download PDF

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Publication number
WO2022143043A1
WO2022143043A1 PCT/CN2021/136121 CN2021136121W WO2022143043A1 WO 2022143043 A1 WO2022143043 A1 WO 2022143043A1 CN 2021136121 W CN2021136121 W CN 2021136121W WO 2022143043 A1 WO2022143043 A1 WO 2022143043A1
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WO
WIPO (PCT)
Prior art keywords
vibrator
magnetic conductive
conductive member
permanent magnets
magnetic
Prior art date
Application number
PCT/CN2021/136121
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English (en)
Chinese (zh)
Inventor
史德璋
王永强
毛东升
Original Assignee
歌尔股份有限公司
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Filing date
Publication date
Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2022143043A1 publication Critical patent/WO2022143043A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets

Definitions

  • the present invention relates to the technical field of vibration motors, in particular to a vibrator and electronic equipment.
  • a vibrator is installed in some electronic products, and the user can obtain a better experience through the vibration of the vibrator. For example, when a user experiences a game, through the vibration feedback of the vibrator, the user can feel the fun brought by the game more.
  • the current vibrators all vibrate in a single direction, and the tactile feedback effect is single, which is difficult to satisfy the rich game tactile design in the game.
  • the present invention proposes a vibrator, the vibrator comprises:
  • the casing encloses an installation space
  • stator assembly is disposed in the installation space, the stator assembly includes a coil and a magnetic conductive member, and the magnetic conductive member is disposed on one side of the coil in the axial direction;
  • a vibrator assembly the vibrator assembly has at least two natural frequencies
  • the vibrator assembly includes a counterweight block located in the installation space, a permanent magnet connected to the counterweight block, and an elastic member, the counterweight block passes through the
  • the elastic member is suspended in the installation space, a plurality of the permanent magnets are arranged, and the plurality of the permanent magnets are surrounded by the magnetic conductive member and are used for magnetic coupling with the magnetic conductive member.
  • the permanent magnets form two magnetic field directions whose extension directions intersect.
  • the magnetic conductive member is arranged in an annular shape
  • the stator assembly further includes a magnetic conductive column, and the magnetic conductive column penetrates the coil and the annular magnetic conductive member.
  • the vibrator further includes a circuit board, the circuit board is provided with a positioning hole, the magnetic conductive column is arranged in the positioning hole, and the coil is connected to the circuit board.
  • the two said coils are respectively arranged on two sides of said magnetic conductive member, and when the two said coils are energized, the energized currents are reversed.
  • the permanent magnet is a strip-shaped structure, the permanent magnet includes a plurality of the permanent magnets, and the plurality of the permanent magnets are arranged around the magnetic conducting member.
  • the four permanent magnets are arranged in parallel in pairs, and the permanent magnets are arranged to form a square.
  • the opposite ends of the parallel permanent magnets have opposite magnetic poles.
  • the magnets form two magnetic field directions whose extension directions are orthogonal.
  • the vibrator assembly further includes two washers, the two washers are disposed along the axial direction of the coil, and the two washers are disposed on two opposite surfaces of the permanent magnet.
  • the elastic member includes a connecting end connected to the weight block and an abutting end abutting against the housing, and a plurality of bending sections are arranged between the connecting end and the abutting end, One of the bending sections is connected to the connecting end, one of the bending sections is connected to the abutting end, and a plurality of the bending sections are connected end to end in sequence.
  • the bending section further includes a bending body and a connecting portion, the connecting portion is provided between the bending bodies, and the connecting portion is used to connect the bending bodies, and the bending body There are arc-shaped notches on both sides.
  • the present invention also provides an electronic device, the electronic device includes a housing and the vibrator as described above, and the vibrator is provided in the housing.
  • the coil when the coil is connected to the current, the coil generates a magnetic field along the axis of the coil, the magnetic field of the coil acts on the magnetic conductive member, the magnetic conductive member is magnetized by the magnetic field of the coil, and the magnetic conductive member changes The direction of the magnetic field of the coil forms a magnetic field along the radial direction of the coil, that is, the magnetic field of the magnetic conductive member.
  • the magnetic field of the magnetic conductive member acts on the permanent magnet, the permanent magnet is surrounded by the magnetic conductive member, and a circular magnetic circuit is formed around the magnetic conductive member. Move in a plane perpendicular to the axial direction of the coil.
  • the vibrator assembly realizes vibration of different frequencies. Since the vibrator assembly has two natural frequencies, when the vibration frequency of the vibrator assembly is close to or equal to one of the natural frequencies, the vibrator assembly vibrates along a direction of a magnetic field that crosses each other. When the vibration frequency of the vibrator assembly is close to or equal to another natural frequency, the vibrator assembly realizes vibration in another magnetic field direction. In this way, the vibration of the vibrator in a single direction is changed, two-way vibration is realized, and the effect of vibration feedback is improved.
  • FIG. 1 is a schematic diagram of a structural explosion of an embodiment of a vibrator of the present invention
  • FIG. 2 is a schematic structural diagram of a hidden casing in an embodiment of the vibrator of the present invention.
  • FIG. 3 is a schematic structural diagram of a stator assembly of the present invention.
  • FIG. 4 is a schematic cross-sectional structure diagram of the stator assembly in FIG. 3;
  • Fig. 5 is the structural representation of the vibrator vibration direction of the present invention.
  • Fig. 6 is the structural representation of counterweight block in Fig. 1;
  • FIG. 7 is a schematic structural diagram of the elastic member in FIG. 1 .
  • the terms "connected”, “fixed” and the like should be understood in a broad sense, for example, “fixed” may be a fixed connection, a detachable connection, or an integrated; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal communication between two elements or an interaction relationship between the two elements, unless otherwise explicitly defined.
  • “fixed” may be a fixed connection, a detachable connection, or an integrated; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal communication between two elements or an interaction relationship between the two elements, unless otherwise explicitly defined.
  • a vibrator is a device that converts electrical energy into mechanical vibration. At present, the vibrator vibrates in a single direction. When the user uses it, the tactile feedback effect is single.
  • the present invention provides a vibrator, which can be used in various electronic devices, such as smart phones, and can also be used in game machines.
  • the vibrator includes: a casing (not shown), a stator assembly (not shown) and a vibrator assembly (not shown), the casing encloses an installation space, the casing includes an upper casing 410 and a bottom plate 420 , and the upper casing 410 includes an upper cover plate 411 and the side plate 412 connected to the periphery of the upper cover plate 411, the bottom plate 420, the side plate 412, and the upper cover plate 411 enclose an installation space.
  • the stator assembly and the vibrator assembly are arranged in the installation space of the casing.
  • the position of the stator assembly is fixed, the stator assembly generates an electromagnetic field, the position of the vibrator assembly can be changed, and the vibrator assembly vibrates under the action of the electromagnetic field.
  • the stator assembly is arranged in the installation space.
  • the stator assembly includes a coil 120 and a magnetic conductive member 110.
  • a magnetic field is formed around the coil 120 when it is energized.
  • the magnetic field direction of the coil 120 is along the axial direction of the coil 120 .
  • the magnetic conductive member 110 is disposed on one side of the coil 120 in the axial direction; the material of the magnetic conductive member 110 can be selected in various ways.
  • the magnetic conductive member 110 is an iron core ring.
  • the iron core ring has good magnetic permeability and is easily magnetized by the magnetic field generated by the coil 120 to form a new magnetic field.
  • the material of the magnetic conductive member 110 may also be other magnetic conductive materials, such as low-carbon steel, iron-silicon alloy, iron-aluminum alloy and other iron alloys.
  • the magnetic conductive member 110 may be circular or square.
  • the vibrator assembly includes a counterweight block 210 and a permanent magnet 220 located in the installation space, and the counterweight block 210 is movably connected to the housing to realize vibration.
  • the permanent magnet 220 is connected to the counterweight 210 , the permanent magnet 220 surrounds the magnetic conductive member 110 , and the magnetic conductive member 110 is arranged in the middle position of the permanent magnet 220 .
  • the counterweight 210 is suspended in the installation space through an elastic member 240 , and one end of the elastic member 240 away from the counterweight 210 is connected to the housing.
  • the permanent magnet is magnetically coupled with the magnetic conductive member 110 .
  • the counterweight 210 has a certain mass, wherein the mass of the counterweight 210 directly affects the natural frequency of the vibrator assembly. In addition, the natural frequency of the vibrator assembly is also affected by the material. It is also affected by the elastic member 240. For example, the elastic member has two different elastic coefficients.
  • the permanent magnet 220 refers to a magnetic component, such as a magnet.
  • the permanent magnet 220 is a permanent magnet.
  • the permanent magnet 220 is connected to the counterweight 210 .
  • the permanent magnet 220 generates a driving force under the action of the magnetic field of the magnetic conductive member 110 .
  • the permanent magnet 220 moves under the action of the magnetic field of the magnetic conductive member 110 , and while the permanent magnet 220 moves, the counterweight 210 moves along with the permanent magnet 220 .
  • the switching of the N pole and the S pole of the magnetic field direction of the magnetic conductive member 110 is realized, and the reciprocating vibration of the vibrator assembly is realized under the action of the changing magnetic field.
  • the coil 120 when the coil 120 is connected to a current, the coil 120 generates a magnetic field along the axis of the coil 120 , the magnetic field of the coil 120 acts on the magnetic conductive member 110 , and the magnetic conductive member 110 is affected by the coil 120 .
  • the magnetic field is magnetized, and the magnetic conductive member 110 changes the magnetic field direction of the coil 120 to form a magnetic field along the radial direction of the coil 120 , that is, the magnetic field of the magnetic conductive member 110 .
  • the magnetic field of the magnetic conductive member 110 acts on the permanent magnet 220, the permanent magnets 220 are arranged around the magnetic conductive member 110, and a circular magnetic circuit is formed around the magnetic conductive member 110.
  • the magnetic field interacts, and the permanent magnet 220 can move in a plane perpendicular to the axial direction of the coil 120 .
  • the polarity of the magnetic field of the magnetic conductive member 110 changes between positive and negative, so that the permanent magnet 220 and the magnetic conductive member 110 generate attraction and repulsion, and the permanent magnet 220 is subjected to the magnetic field with the changing polarity
  • the driving force that reciprocates, thereby creating the effect of vibration.
  • the vibrator assembly realizes vibration of different frequencies.
  • the vibrator assembly Since the vibrator assembly has two natural frequencies, when the vibration frequency of the vibrator assembly is close to or equal to one of the natural frequencies, the vibrator assembly vibrates in a direction of a magnetic field that crosses each other. When the vibration frequency of the vibrator assembly is close to or equal to another natural frequency, the vibrator assembly realizes vibration in another magnetic field direction. In this way, the vibration of the vibrator in a single direction is changed, and two-way vibration is realized, thereby improving the effect of vibration feedback.
  • the stator assembly includes a magnetic conductive column 130 , the magnetic conductive member 110 is arranged in a ring shape, and the magnetic conductive column 130 passes through the coil 120 and the annular magnetic conductive member 110 .
  • the material of the magnetic conductive column 130 is an iron core, and the iron core has good magnetic permeability. After the magnetic conductive column 130 is arranged, the magnetic field of the coil 120 is strengthened, thereby increasing the magnetic field strength of the coil 120 .
  • the magnetic conductive member 110 is disposed on the magnetic conductive column 130, and through the contact between the magnetic conductive member 110 and the magnetic conductive column 130, the magnetic conductive column 130 can more effectively transmit the intensity of the magnetic field generated by the coil 120 to the magnetic conductive member 110, Therefore, it is more favorable for the magnetic conductive member 110 to quickly form a magnetic field.
  • the vibrator includes the circuit board 30 , the circuit board 30 is provided with a positioning hole 310 , the magnetic conductive column 130 is arranged in the positioning hole 310 , and the coil 120 is connected to the circuit board 30 .
  • the magnetic conductive column 130 is inserted into the positioning hole 310 , and is fixed by the positioning hole 310 to improve the firmness of the magnetic conductive column 130 on the circuit board 30 .
  • the circuit board 30 When the circuit board 30 is powered on, it transmits the power to the coil 120 to provide power for the coil 120 to generate a magnetic field.
  • the magnetic conductive member 110 can also effectively concentrate the magnetic fields of the upper and lower coils 120 .
  • the permanent magnets 220 are strip-shaped structures, and the permanent magnets 220 include a plurality of permanent magnets 220 surrounding the magnetic conducting member 110 .
  • the permanent magnets 220 there are four permanent magnets 220 , the four permanent magnets 220 are arranged end to end in sequence, and the four permanent magnets 220 are arranged around the magnetic conducting member 110 .
  • the four permanent magnets 220 are arranged in parallel, the permanent magnets 220 are surrounded to form a square, the opposite ends of the permanent magnets 220 that are parallel to each other have opposite magnetic poles, and the permanent magnets 220 form two magnetic field directions whose extension directions are orthogonal.
  • the magnetic field lines of the magnetic conductive member 110 are formed around the magnetic conductive member 110 . It can be said that the acting force of the magnetic conductive member 110 is in a plane along the radial direction of the magnetic conductive member 110 .
  • the positions of the permanent magnets 220 are also set in the plane of the radial direction of the magnetic conductive member 110 . It can be understood from this that the force of the magnetic conductive member 110 may directly act on the permanent magnet 220 .
  • the four permanent magnets 220 are arranged around the magnetic conductive member 110 to form a ring-shaped magnetic circuit, and the vibrator assembly has force-bearing positions around the stator assembly, so that when the magnetic field of the coil 120 changes, the vibrator assembly has more force-bearing points , and further, the vibration of the vibrator assembly can be more balanced.
  • the magnetic conductive member 110 has a square structure, the structure formed by the permanent magnets 220 is also square, and the side of the magnetic conductive member 110 corresponds to a structure of the permanent magnet 220 . It can be seen from this that the magnetic field of the magnetic conductive member 110 and the magnetic field of the permanent magnet 220 directly interact.
  • the vibrator assembly has two natural frequencies, and the vibrator assembly vibrates according to one of the natural frequencies, and the vibration direction of the vibrator assembly is the X direction. If the vibrator assembly vibrates according to the other natural frequency, the vibration direction of the vibrator assembly is the Y direction. .
  • the vibrator assembly vibrates, it vibrates in both the X direction and the Y direction, with one of the vibration directions as the main direction and the other as the auxiliary. For example, if the vibration frequency of the vibrator assembly is close to or equal to one of the natural frequencies, the vibration direction in the X direction is the main direction, and the vibration direction in the Y direction is the auxiliary direction. If the vibration frequency of the vibrator assembly is close to or equal to another natural frequency, the vibration direction in the Y direction is the main direction, and the vibration direction in the X direction is the auxiliary.
  • the vibrator assembly in order to improve the magnetic properties of the permanent magnet 220, the vibrator assembly further includes two washers 230, the two washers 230 are arranged along the axial direction of the magnetic conducting member 110, and the two washers 230 are covered on the permanent magnet 220 opposite sides.
  • the function of the washer 230 is mainly to conduct magnetism.
  • the washer 230 is a square metal sheet.
  • the vibrator assembly in order to make the vibrator assembly vibrate smoothly, includes a frame structure, the permanent magnet 220 is located inside the frame structure, the counterweight 210 is located outside the frame structure, and the elastic member 240 is located at The counterweight 210 is on the side away from the permanent magnet, and the coil 120 and the magnetic conductive member 110 are located in the frame structure.
  • the permanent magnets 220 are disposed inside the frame structure, so that the permanent magnets 220 are closer to the magnetic conductive member 110 , and the closer the permanent magnets 220 are to the magnetic conductive member 110 , the higher the density of magnetic lines of force. Therefore, the driving force received by the permanent magnet 220 is larger, and the effect of the vibration of the counterweight 210 is also better.
  • a spaced gap is provided between the counterweight 210 and the magnetic conductive member 110 .
  • the frame structure vibrates in the spaced gaps, thereby ensuring that the counterweight 210 can vibrate smoothly.
  • the counterweight 210 in order to make the vibrator assembly vibrate more evenly, includes a first vibrating portion 211 and a second vibrating portion 212 arranged oppositely, and a connection connecting the first vibrating portion 211 and the second vibrating portion 212
  • the first vibrating part 211 and the second vibrating part 212 are respectively disposed on opposite sides of the magnetic conducting member 110; the counterweight 210 has a certain weight, and the mass of the counterweight 210 directly affects the vibration effect of the vibrator assembly. For example, the greater the mass of the counterweight 210, the lower the vibration frequency of the vibrator assembly. Likewise, the smaller the mass of the counterweight 210 is, the higher the vibration frequency of the vibrator assembly is.
  • Disposing the first vibrating portion 211 and the second vibrating portion 212 on opposite sides of the stator assembly can make the gravity on both sides of the vibrator assembly more balanced and avoid vibration deviation.
  • the mass of the first vibration part 211 and the second vibration part 212 are the same.
  • the vibrator assembly further includes two elastic members 240 , one elastic member 240 is disposed on the side of the first vibrating portion 211 away from the magnetic conductive member 110 , and the other elastic member 240 is disposed on the side of the second vibrating portion 212 away from the magnetic conductive member 110 .
  • the function of the elastic member 240 is to ensure that the counterweight block 210 vibrates within a suitable range, so as to prevent the counterweight block 210 from touching the inner wall of the housing during the vibration process. It can be said that the elastic member 240 plays a certain buffering role.
  • the elastic member 240 includes a connecting end 241 connected to the counterweight 210 and an abutting end 242 abutting against the housing.
  • the connecting end 241 and the abutting end 242 A plurality of bending sections 234 are arranged therebetween, a bending section 243 is connected to the connecting end 241 , a bending section 243 is connected to the abutting end 242 , and the bending sections 243 are connected end to end in sequence.
  • the elastic member 240 includes a first bending section, a second bending section and a third bending section, the first bending section is connected to the connecting end 241, the second bending section is connected to the abutting end 242, and the first bending section
  • the extension directions of the bending section and the second bending section are parallel
  • a third bending section is connected between the first bending section and the second bending section
  • the extension direction of the third bending section is the same as that of the first bending section. direction cross.
  • the bending section 243 further includes a bending body 243a and a connecting portion 243b, the connecting portion 243b is disposed between the bending bodies 243a, and the connecting portion 243b is used to connect the bending body 243a, and the bending body
  • Both sides of 243a have arc-shaped notches.
  • a connecting portion 243b is provided at the connecting position of the two bending sections 243, and the cross-sectional area of the connecting portion 243b is larger than that of the bending body 243a, so as to ensure that the connecting portion 243b can withstand a large pressure and improve the service life of the bending section 243 .
  • the two sides of the bending body 243a have arc-shaped notches, and the force on the bending body is relatively small. Setting the arc-shaped notches can save processing materials, and can also meet the force requirements of the elastic member 240 .
  • the present invention also provides an electronic device, the electronic device includes a housing and the vibrator as above, and the vibrator is provided in the housing.
  • the vibrator is arranged in the casing, and the casing can effectively protect the vibrator, prevent dust from falling into the vibrator, and also reduce the infiltration of water into the vibrator to prevent the vibrator from malfunctioning.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

La présente invention concerne un vibreur et un dispositif électronique. Le vibreur comprend un boîtier, un ensemble stator et un ensemble vibreur, et le boîtier délimite un espace de montage ; l'ensemble stator est disposé dans l'espace de montage, l'ensemble stator comprend des bobines et un élément magnétiquement conducteur, et l'élément magnétiquement conducteur est disposé sur un côté de la direction axiale des bobines ; l'ensemble vibreur présente au moins deux fréquences naturelles, l'ensemble vibreur comprend un bloc de contrepoids situé dans l'espace de montage ainsi que des aimants permanents et des éléments élastiques reliés au bloc de contrepoids, le bloc de contrepoids est suspendu dans l'espace de montage au moyen des éléments élastiques, une pluralité d'aimants permanents sont prévus, la pluralité d'aimants permanents entourent l'élément magnétiquement conducteur et sont utilisés pour être couplés magnétiquement à l'élément magnétiquement conducteur, et la pluralité d'aimants permanents forment deux directions de champ magnétique dont les directions d'extension respectives se croisent. La solution technique de la présente invention permet d'obtenir des vibrations dans deux directions, améliorant ainsi l'effet de rétroaction des vibrations.
PCT/CN2021/136121 2020-12-30 2021-12-07 Vibreur et dispositif électronique WO2022143043A1 (fr)

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CN202011642949.3A CN112865470B (zh) 2020-12-30 2020-12-30 振动器和电子设备
CN202011642949.3 2020-12-30

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WO2024045638A1 (fr) * 2022-08-30 2024-03-07 深圳术叶创新科技有限公司 Actionneur linéaire et dispositif de cisaillement électrique

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CN112865470B (zh) * 2020-12-30 2022-06-21 歌尔股份有限公司 振动器和电子设备

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