CN114653568B - Vibration assembly and tactile actuator with same - Google Patents
Vibration assembly and tactile actuator with same Download PDFInfo
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- CN114653568B CN114653568B CN202210369843.3A CN202210369843A CN114653568B CN 114653568 B CN114653568 B CN 114653568B CN 202210369843 A CN202210369843 A CN 202210369843A CN 114653568 B CN114653568 B CN 114653568B
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- 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
- B06B1/045—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism using vibrating magnet, armature or coil system
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- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The invention relates to the technical field of tactile feedback, in particular to a vibration assembly and a tactile exciter with the vibration assembly, wherein the vibration assembly comprises: the elastic sheet comprises a middle fixing part, elastic arms which are connected with the middle fixing part along the same linear direction and extend towards the opposite direction, and end fixing parts which are arranged at the free ends of the two elastic arms, wherein the end fixing parts are used for being connected with the shell; the magnetic shield assembly comprises a magnetic shield main body, the magnetic shield main body is connected with the middle fixing part, and an opening cavity is formed in the magnetic shield main body in the direction away from the middle fixing part; the magnetic steel component is fixed in the opening cavity of the magnetic cover component and comprises main magnetic steel arranged in the center of the opening cavity; wherein, the magnetic shield main part is formed by laminating a plurality of cold rolling magnetic conduction plates. According to the invention, through the arrangement of the magnetic shield component, and the mode that the magnetic shield main body is formed by laminating a plurality of cold-rolled magnetic conduction plates, the mass of the vibration component is increased, the consumption of the magnetic steel is less, the manufacturing cost is reduced, and the processing technology is simplified.
Description
Technical Field
The invention relates to the technical field of tactile feedback, in particular to a vibration assembly and a tactile actuator with the same.
Background
The touch exciter is characterized in that according to the electromagnetic induction principle, alternating magnetic field is generated by electrifying alternating current in a coil so as to drive a vibration assembly in the magnetic field to generate reciprocating motion, so that vibration sense is fed back to an operator when the operator performs touch operation; the vibration component is mainly composed of magnetic steel and an elastic sheet, and how to adjust the vibration effect becomes a key problem;
in the related technology, in order to achieve the vibration sensation of the ultralow frequency, the mass of the vibration assembly is increased by adopting large-size magnetic steel and pole pieces, but the magnetic steel belongs to rare earth materials, and the large-size magnetic steel causes higher cost output; therefore, in the field of tactile exciters, the frequency, the amplitude and the acceleration of vibration are changed by adjusting the shape and the size of the elastic sheet, so that the structure of the elastic sheet is more and more complex, and the processing technology is more and more complicated;
the information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a vibration assembly and a haptic actuator having the same are provided to simplify a manufacturing process and reduce manufacturing costs.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
in a first aspect, there is provided a vibration assembly comprising:
the elastic sheet comprises a middle fixing part, elastic arms which are connected with the middle fixing part along the same linear direction and extend towards opposite directions, and end fixing parts which are arranged at the free ends of the two elastic arms, wherein the end fixing parts are used for being connected with the shell;
the magnetic shield assembly comprises a magnetic shield main body, the magnetic shield main body is connected with the middle fixing part, and an opening cavity is formed in the magnetic shield main body towards the direction far away from the middle fixing part;
the magnetic steel component is fixed in the opening cavity of the magnetic cover component and comprises main magnetic steel arranged at the center of the opening cavity;
the magnetic shield main body is formed by laminating a plurality of cold-rolled magnetic conduction plates.
Furthermore, the whole elastic sheet is rectangular, the middle fixing part is arranged at the center, the elastic arms extend towards the length direction of the elastic sheet and are symmetrically arranged in the width direction of the elastic sheet, two sides of the middle fixing part in the width direction are connected with the elastic arms, and the end fixing parts are connected with the two elastic arms on the same side in the length direction of the elastic sheet.
Furthermore, a through hole is formed in the center of the middle fixing part.
Furthermore, the magnetic shield main body comprises a magnetic conduction bottom plate and a plurality of stacked middle magnetic conduction plates, the centers of the middle magnetic conduction plates penetrate through round holes with the same diameter, and the main magnetic steel is connected with the magnetic conduction bottom plate and covered by a space formed by the round holes.
Furthermore, the magnetic steel assembly also comprises a pole piece connected with the main magnetic steel and an auxiliary magnetic steel connected with the pole piece;
the pole piece and the auxiliary magnetic steel are both cylindrical and fixed with the same axle center.
Furthermore, the magnetic shield main body also comprises a magnetic conduction clamping plate, the magnetic conduction clamping plate is fixed on the plurality of middle magnetic conduction plates, a limiting hole is formed in the center of the magnetic conduction clamping plate, and the diameter of the limiting hole is smaller than that of the round hole;
the pole piece corresponds to the position of the magnetic conductive clamping plate in the height direction, and the diameter of the pole piece is larger than that of the main magnetic steel.
Further, the magnetic shield assembly further comprises a bracket, a hole position corresponding to the limiting hole is formed in the center of the bracket, the diameter of the hole is not smaller than that of the limiting hole, and four side walls of the bracket are bent and connected with the side walls of the magnetic conduction clamping plate, the middle magnetic conduction plate and the magnetic conduction bottom plate.
Furthermore, the length of the magnetic conduction bottom plate is the same as the length of the middle magnetic conduction plate and the length of the magnetic conduction clamping plate, bulges are arranged on two sides of the magnetic conduction bottom plate in the width direction, the distance between the two bulges is the same as the width of the middle magnetic conduction plate and the width of the magnetic conduction clamping plate, and the side wall of the bracket is connected with the bulges.
In a second aspect, the present invention also provides a haptic actuator comprising:
the shell comprises a shell bottom and four side walls perpendicular to the shell bottom;
the coil is fixed at the center of the shell bottom and extends towards the height direction of the shell in a cylindrical shape;
the vibration assembly according to any one of the first aspect, wherein the end fixing portions of the elastic pieces in the vibration assembly are fixed to the tops of two side walls in the length direction of the housing;
the coil penetrates into the opening cavity and is arranged between the magnetic steel assembly and the inner wall of the opening cavity.
Furthermore, the bottom shell center still has the pressure-equalizing hole, the all around towards the inboard bulge in pressure-equalizing hole is provided with annular fixed part.
The invention has the beneficial effects that: the magnetic shield component is arranged, the magnetic shield main body is formed by laminating a plurality of cold-rolled magnetic conduction plates, the cold-rolled magnetic conduction plates are arranged as the main part of the vibration component, the magnetic shield component plays a role of magnetic conduction and improves the distribution reliability of a magnetic field, and simultaneously, the magnetic shield component and the magnetic steel component form a throwing block together, so that the quality of the vibration component is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and it is also possible for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic diagram of a vibrating assembly according to an embodiment of the present invention;
FIG. 2 isbase:Sub>A sectional view taken along line A-A of FIG. 1 in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram of an exploded view of the vibration assembly of FIG. 1 in accordance with an embodiment of the present invention;
FIG. 4 is a top view of an explosive assembly in an embodiment of the present invention;
FIG. 5 is a schematic diagram of an exploded structure of a magnetic shield body according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view of the magnetic shield body and magnetic steel assembly in an embodiment of the present invention;
FIG. 7 is a schematic view of an exploded structure of a vibration assembly in an embodiment of the present invention;
FIG. 8 is a schematic structural view of a magnetic shield assembly in an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a haptic actuator in an embodiment of the present invention;
FIG. 10 is a schematic diagram of an exploded view of the haptic actuator of FIG. 9 in accordance with an embodiment of the present invention;
fig. 11 is a cross-sectional view of the tactile actuator of fig. 9 in an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The vibration assembly shown in fig. 1 to 7 comprises a spring plate 10, a magnetic cover assembly 20 and a magnetic steel assembly 30, wherein:
the elastic sheet 10 comprises a middle fixing part 11, elastic arms 12 which are connected with the middle fixing part 11 along the same linear direction and extend towards the opposite direction, and end fixing parts 13 arranged at the free ends of the two elastic arms 12, wherein the end fixing parts 13 are used for being connected with the shell; in the embodiment of the invention, the structure of the elastic sheet 10 is simpler, and can be formed by punch forming, laser burning forming or etching forming, so that compared with the complex shape in the prior art, the processing technology is greatly simplified;
the magnetic shield assembly 20 comprises a magnetic shield main body 21, the magnetic shield main body 21 is connected with the middle fixing part 11, and an open cavity 20a is formed in the magnetic shield main body 21 towards the direction far away from the middle fixing part 11; the magnetic shield assembly 20 is connected with the middle fixing part 11 of the elastic sheet 10, when the end fixing part 13 of the elastic sheet 10 is fixed, the whole magnetic shield assembly 20 can be suspended, and the vibration of the magnetic shield main body 21 is realized through the deformation of the elastic arm;
the magnetic steel assembly 30 is fixed in the open cavity 20a of the magnetic cover assembly 20 and comprises a main magnetic steel 31 arranged in the center of the open cavity 20a; in this way, the main magnet steel 31 is connected with the magnetic shield component 20, so that the magnetic path of the main magnet steel 31 returns to the other pole of the main magnet steel 31 after being conducted by the magnetic shield component 20, the magnetic field distribution of the whole vibration component is more uniform, the generation of magnetic leakage is reduced, the stability of the vibration component during vibration is improved, and the interference to other electronic elements is reduced;
the magnetic shield main body 21 is formed by laminating a plurality of cold-rolled magnetic conductive plates. It should be noted that, in the prior art, the magnetic shield is generally formed by integral press, while the thickness of the wall and the bottom of the pressed material is generally consistent during the press forming, and the wall thickness cannot be increased by empty during the press forming, while the magnetic shield main body 21 in the embodiment of the present invention is formed by stacking several cold-rolled magnetic conductive plates, the weight of the magnetic shield main body is basically determined after the press forming, and the magnetic shield main body can be set to any shape by stacking the magnetic conductive plates, and can also adjust the weight of the magnetic shield by adjusting the number, the thickness and the size of the cold-rolled magnetic conductive plates without being limited by the size of the middle opening cavity 20a, and in the prior art, after the mass of the vibration is fixed, the shape and the size of the elastic sheet 10 can be adjusted to adjust the frequency, the amplitude and the acceleration of the vibration, while in the embodiment of the present invention, a new path is opened, that is, the mass of the vibration is adjusted by stacking the number of the cold-rolled magnetic conductive plates, so as to vibrate the frequency, the amplitude and the acceleration of the assembly.
In the above embodiment, by setting the magnetic shield assembly 20, and setting the magnetic shield main body 21 to be a mode formed by stacking a plurality of cold-rolled magnetic conductive plates, the plurality of cold-rolled magnetic conductive plates are set as the main part of the vibration assembly, the magnetic shield assembly 20 not only plays a role of magnetic conduction, and improves the reliability of magnetic field distribution, but also forms a throwing block together with the magnetic steel assembly 30, and the quality of the vibration assembly is increased.
In addition to the above embodiments, as shown in fig. 3, the elastic sheet 10 is rectangular as a whole, the middle fixing portion 11 is disposed at a central position, the elastic arms 12 extend toward the length direction of the elastic sheet 10 and are symmetrically disposed in the width direction of the elastic sheet 10, the middle fixing portion 11 is connected to the elastic arms 12 at both sides in the width direction, and the end fixing portions 13 are connected to the two elastic arms 12 on the same side in the length direction of the elastic sheet 10. Namely, the elastic arm 12 wraps the middle fixing part 11, and by the arrangement, the effectiveness of the elastic arm 12 can be improved to the maximum extent, and the overall elasticity of the vibration component can be improved; of course, the structure of the elastic arm can be modified by those skilled in the art, such as changing the straight type to the S-shaped arrangement, so as to increase the length of the elastic arm 12.
In the embodiment of the present invention, a through hole 11a is opened at the center of the intermediate fixing portion 11. By forming the through hole 11a, on one hand, the weight of the intermediate fixing portion 11 can be reduced, and on the other hand, the fixing strength between the intermediate fixing portion 11 and the magnetic shield assembly 20 can be improved, for example, during welding, welding can be performed at the through hole 11a of the intermediate fixing portion 11;
as for the specific structure of the magnetic shield main body 21, as shown in fig. 5, the magnetic shield main body 21 includes a magnetic conductive bottom plate 21a and a plurality of stacked intermediate magnetic conductive plates 21b, the centers of the intermediate magnetic conductive plates 21b are all penetrated with a circular hole 21b1 having the same diameter, and a main magnetic steel 31 is connected to the magnetic conductive bottom plate 21a and covered by a space formed by the circular holes 21b 1. In the embodiment of the invention, the magnetic conduction plate is made of SPC cold-rolled plate, and compared with the magnetic steel material, the magnetic conduction plate is more economical in price;
further, as shown in fig. 6, the magnetic steel assembly 30 further includes a pole piece 32 connected to the main magnetic steel 31 and a secondary magnetic steel 33 connected to the pole piece 32; the pole piece 32 and the auxiliary magnetic steel 33 are both cylindrical and fixed coaxially. The arrangement of the main magnetic steel 31, the pole piece 32 and the auxiliary magnetic steel 33 further improves the magnetic field intensity of the magnetic steel component 30, and improves the stress intensity of the vibration component during vibration;
referring to fig. 5, the magnetic shield body 21 further includes a magnetic conductive clamping plate 21c, the magnetic conductive clamping plate 21c is fixed on the plurality of middle magnetic conductive plates 21b, the center of the magnetic conductive clamping plate 21c is provided with a limiting hole 21c1, and the diameter of the limiting hole 21c1 is smaller than that of the round hole 21b 1;
the pole piece 32 corresponds to the position of the magnetic conductive clamping plate 21c in the height direction, and the diameter of the pole piece 32 is larger than that of the main magnetic steel 31. Through the arrangement, the distance between the pole piece 32 and the magnetic conductive clamping plate 21c is small, so that magnetism is conveniently gathered; in addition, through the arrangement, the gap inside the cavity is larger than that of the cup opening, even if the whole vibrating assembly is inclined, the vibrating assembly can be allowed to generate no friction to the coil 50 in the following when vibrating, and the service life of the whole vibrating assembly is prolonged.
In the embodiment of the present invention, the magnetic conducting clamp plate 21c, the middle magnetic conducting plate 21b, and the magnetic conducting bottom plate 21a may be connected by welding, and in order to further improve the construction efficiency and the fixing reliability, in the embodiment of the present invention, as shown in fig. 8, the magnetic shield assembly 20 further includes a bracket 21d, a hole location corresponding to the limiting hole 21c1 is formed in the center of the bracket 21d, and the diameter of the hole is not smaller than the diameter of the limiting hole 21c1, and four side walls of the bracket 21d are bent and connected to the magnetic conducting clamp plate 21c, the middle magnetic conducting plate 21b, and the side walls of the magnetic conducting bottom plate 21 a. In this way, the fixing strength of the vibration component is further improved by the cladding of the bracket 21d, as shown in fig. 8, the widths of the four side walls of the bracket 21d are smaller than the width of the magnetic conduction plate, so that the welding area can be further increased;
in addition, referring to fig. 4, the length of the magnetic conductive bottom plate 21a is the same as the lengths of the middle magnetic conductive plate 21b and the magnetic conductive clamping plate 21c, two sides of the magnetic conductive bottom plate 21a in the width direction have protrusions 21a1, the distance between the two protrusions 21a1 is the same as the widths of the middle magnetic conductive plate 21b and the magnetic conductive clamping plate 21c, and the side wall of the bracket 21d is connected to the protrusions 21a 1. With this arrangement, when the intermediate fixing portion 11 is connected to the magnetic conductive base plate 21a, only the intermediate fixing portion 11 is connected, and the magnetic conductive base plate 21a is prevented from contacting the spring arm 12, thereby improving the effectiveness of vibration.
In an embodiment of the present invention, there is also provided a tactile actuator as shown in fig. 9 to 11, including a housing 40, a coil 50, and the vibration assembly described above;
the housing 40 includes a bottom case and four sidewalls perpendicular to the bottom case; in the embodiment of the invention, the shell 40 is formed by a bending process, and two sides of the four side walls in the length direction are turned outwards to increase the effective area of connection with the elastic sheet 10;
as shown in fig. 10, the coil 50 is fixed at the center position of the case bottom and extends cylindrically toward the height direction of the case 40; referring to fig. 11, the coil 50 is located between the magnetic steel assembly 30 and the open cavity 20a, when the coil 50 is energized with a forward current, the vibration assembly is stressed in one direction in the vertical direction, and the reverse current is stressed in the other direction, so as to drive the vibration assembly to reciprocate;
the end fixing part 13 of the elastic sheet 10 in the vibration component is fixed on the top of two side walls in the length direction of the shell 40;
the coil 50 penetrates into the open cavity 20a and is disposed between the magnetic steel assembly 30 and the inner wall of the open cavity 20 a.
In the embodiment of the invention, in order to reduce the influence of vibration caused by air pressure change, the center of the bottom shell is also provided with the pressure equalizing hole 41, so that air is fed or discharged through the pressure equalizing hole 41 when the vibration assembly moves integrally; and in order to improve the fixing strength of the coil 50, in the embodiment of the present invention, as shown in fig. 10, the circumference of the pressure equalizing hole 41 is provided with the annular fixing portion 41a toward the inner protrusion 21a 1. Therefore, the coil 50 is sleeved on the annular fixing portion 41a and then is glued or welded, so that the fixing strength of the coil 50 is improved, and the service life of the whole body is prolonged.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A tactile actuator, comprising:
the shell comprises a shell bottom and four side walls perpendicular to the shell bottom;
the coil is fixed at the center of the shell bottom and extends towards the height direction of the shell in a cylindrical shape;
a vibration assembly, the vibration assembly comprising:
the elastic sheet comprises a middle fixing part, elastic arms which are connected with the middle fixing part along the same linear direction and extend towards opposite directions, and end fixing parts which are arranged at the free ends of the two elastic arms, wherein the end fixing parts are used for being connected with the shell;
the magnetic shield assembly comprises a magnetic shield main body, the magnetic shield main body is connected with the middle fixing part, an open cavity is formed in the direction, away from the middle fixing part, of the magnetic shield main body, the magnetic shield main body is formed by laminating a plurality of cold-rolled magnetic conduction plates, and the vibration frequency, the amplitude and the acceleration of the vibration assembly are adjusted by adjusting the number, the thickness and the size of the cold-rolled magnetic conduction plates;
the magnetic steel component is fixed in the opening cavity of the magnetic cover component and comprises main magnetic steel arranged in the center of the opening cavity;
the end fixing parts of the elastic sheets in the vibration assembly are fixed on the tops of two side walls of the shell in the length direction;
the coil penetrates into the opening cavity and is arranged between the magnetic steel assembly and the inner wall of the opening cavity.
2. A tactile actuator according to claim 1, wherein said resilient piece has a rectangular shape as a whole, said intermediate fixing portion is provided at a central position, said resilient arms extend in a longitudinal direction of said resilient piece and are symmetrically provided in a width direction of said resilient piece, said intermediate fixing portion is connected to said resilient arms at both sides in the width direction, and said end fixing portions are connected to both resilient arms at the same side in the length direction of said resilient piece.
3. A tactile actuator according to claim 2, wherein said intermediate fixing portion is formed with a through hole at a central position thereof.
4. A tactile actuator as defined in claim 1, wherein said magnetic shield body comprises a magnetic conductive bottom plate and a plurality of stacked intermediate magnetic conductive plates, a circular hole of the same diameter is formed through the center of each of said intermediate magnetic conductive plates, and said main magnetic steel is connected to said magnetic conductive bottom plate and covered by a space formed by said circular holes.
5. A haptic actuator as defined in claim 4 wherein said magnetic steel assembly further comprises a pole piece connected to said primary magnetic steel and a secondary magnetic steel connected to said pole piece;
the pole piece and the auxiliary magnetic steel are both cylindrical and fixed with the same axle center.
6. A tactile actuator according to claim 5, wherein said magnetic shield body further comprises a magnetic conductive clamping plate fixed to a plurality of said intermediate magnetic conductive plates, and said magnetic conductive clamping plate has a stopper hole in the center thereof, the diameter of said stopper hole being smaller than the diameter of said circular hole;
the pole piece corresponds to the position of the magnetic conductive clamping plate in the height direction, and the diameter of the pole piece is larger than that of the main magnetic steel.
7. A tactile actuator according to claim 6, wherein said magnetic shield assembly further comprises a bracket, said bracket having a hole corresponding to said limiting hole and having a diameter not smaller than that of said limiting hole, and four side walls of said bracket being bent and connected to said magnetic conductive clamping plate, said intermediate magnetic conductive plate and said side walls of said magnetic conductive bottom plate.
8. A tactile actuator as claimed in claim 7, wherein said magnetically conductive base plate has a length equal to the length of said intermediate plate and said plate, said plate having protrusions on both sides in the width direction, the distance between said protrusions being equal to the width of said intermediate plate and said plate, said side walls of said bracket being connected to said protrusions.
9. A tactile actuator according to claim 1, wherein said housing bottom further comprises a pressure equalizing hole in the center, and said pressure equalizing hole is provided with a ring-shaped fixing portion protruding inward from the periphery thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210369843.3A CN114653568B (en) | 2022-04-08 | 2022-04-08 | Vibration assembly and tactile actuator with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210369843.3A CN114653568B (en) | 2022-04-08 | 2022-04-08 | Vibration assembly and tactile actuator with same |
Publications (2)
| Publication Number | Publication Date |
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| CN114653568A CN114653568A (en) | 2022-06-24 |
| CN114653568B true CN114653568B (en) | 2023-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210369843.3A Active CN114653568B (en) | 2022-04-08 | 2022-04-08 | Vibration assembly and tactile actuator with same |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404437A (en) * | 2008-11-11 | 2009-04-08 | 天津三星电机有限公司 | Linear vibration motor |
| CN201616900U (en) * | 2010-02-02 | 2010-10-27 | 歌尔声学股份有限公司 | Miniature moving coil type acoustic generator |
| CN102075837B (en) * | 2010-12-22 | 2012-07-04 | 汉得利（常州）电子有限公司 | High-frequency high-sensitivity ultrasonic sensor |
| EP3796670A4 (en) * | 2018-06-15 | 2021-06-02 | Shenzhen Voxtech Co., Ltd. | Bone conduction speaker and earphone |
| KR20200065437A (en) * | 2018-11-30 | 2020-06-09 | 주식회사 씨케이머티리얼즈랩 | Tactile actuator |
| CN111510830A (en) * | 2020-04-16 | 2020-08-07 | 歌尔股份有限公司 | Sound producing device |
| CN213522352U (en) * | 2020-12-09 | 2021-06-22 | 共达电声股份有限公司 | Loudspeaker |
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