CN111817525B - Excited vibration module and electronic terminal - Google Patents
Excited vibration module and electronic terminal Download PDFInfo
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- CN111817525B CN111817525B CN202010764795.9A CN202010764795A CN111817525B CN 111817525 B CN111817525 B CN 111817525B CN 202010764795 A CN202010764795 A CN 202010764795A CN 111817525 B CN111817525 B CN 111817525B
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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
- H02K33/16—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
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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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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The invention discloses an excitation vibration component and an electronic terminal, wherein the excitation vibration component is used for the electronic terminal comprising a fixed part and a vibration part, and comprises: the stator assembly comprises a first shell and a stator fixedly arranged on the first shell; the first vibrator assembly comprises a second shell fixedly connected with the vibrating part and a first vibrator arranged in the second shell; the second oscillator assembly comprises a third shell fixed relative to the first shell, a second oscillator accommodated in the third shell, and a first elastic connecting piece for connecting the third shell and the second oscillator; the third shell and/or the first shell are/is fixedly connected with the fixing part; the first vibrator component is used for driving the vibration part to vibrate and sound under the electromagnetic action; the second oscillator is used for generating vibration feedback under the electromagnetic action. The technical scheme of the invention can simplify the structure of the electronic terminal with the excitation vibration component.
Description
Technical Field
The invention relates to the technical field of electronic equipment, in particular to an excitation vibration assembly and an electronic terminal.
Background
For electronic terminals such as mobile phones and tablet computers, a vibration motor is usually arranged in the electronic terminal to realize vibration feedback. In addition, an exciter is usually provided in these electronic terminals, so that the screen or the rear case is driven by the exciter to vibrate and sound. However, the vibration motor needs to be provided with a stator, and the exciter needs to be provided with a stator, that is, the electronic terminals need to be provided with mounting structures for the stator of the vibration motor and the stator of the exciter, respectively, resulting in a complicated structure of the electronic terminals as a whole.
Disclosure of Invention
The main object of the present invention is to propose an excited vibration component aimed at simplifying the structure of an electronic terminal having the excited vibration component.
In order to achieve the above object, the present invention provides an excited vibration module for an electronic terminal, the electronic terminal including a fixing portion and a vibrating portion, the excited vibration module including:
the stator assembly comprises a first shell and a stator fixedly arranged on the first shell;
the first vibrator assembly comprises a second shell fixedly connected with the vibrating part and a first vibrator arranged in the second shell; and
the second oscillator assembly comprises a third shell fixed relative to the first shell, a second oscillator accommodated in the third shell and a first elastic connecting piece for connecting the third shell and the second oscillator; the third shell and/or the first shell are/is fixedly connected with the fixing part;
the first vibrator component is used for driving the vibration part to vibrate and sound under the electromagnetic action;
the second oscillator is used for generating vibration feedback under the electromagnetic action.
Optionally, the stator includes a coil, the first vibrator includes a first magnet, and the second vibrator includes a second magnet.
Optionally, the coil is a flat coil;
the first magnet comprises two first sub-magnets which are oppositely arranged, and a first magnetic gap is formed between the two first sub-magnets at intervals; the magnetizing directions of the two first sub-magnets are the same and are both perpendicular to the vibration direction of the first vibrator assembly;
the second magnet comprises two second sub-magnets which are oppositely arranged, and a second magnetic gap is formed between the two second sub-magnets at intervals; the magnetizing directions of the two second sub-magnets are the same and are perpendicular to the vibration direction of the second vibrator, and the magnetizing directions of the second sub-magnets are opposite to that of the first sub-magnets;
one side of the flat coil is movably inserted into the second magnetic gap, and the other side of the flat coil is movably inserted into the first magnetic gap.
Optionally, the first housing is provided with a mounting groove, and one side of the flat coil is accommodated and fixed in the mounting groove.
Optionally, the second vibrator further includes a mass, and the mass is fixedly connected to the second magnet.
Optionally, the second vibrator is connected to the first housing through a second elastic connecting member.
Optionally, the third housing is fixedly connected to the first housing.
Optionally, the first housing is provided with a mounting protrusion protruding laterally from the third housing, and the mounting protrusion is used to be fixedly connected with the fixing portion.
Optionally, the first housing and the first vibrator component are connected through a third elastic connecting piece.
The invention also proposes an electronic terminal comprising:
the aforementioned excited vibration module;
the fixing part is fixedly connected with the first shell and/or the third shell of the excitation vibration assembly; and
the vibration part is fixedly connected with the second shell of the excitation vibration assembly;
the first vibrator component of the excitation vibration component is used for driving the vibration part to vibrate and sound;
the second vibrator of the excitation vibration assembly is used for generating vibration feedback.
In the technical scheme of the invention, the stator assembly is used for both the exciter and the vibration motor, namely, only one stator assembly is needed for realizing vibration sounding of the vibration part of the electronic terminal and providing vibration feedback, so that the electronic terminal only needs to be provided with an installation structure for the stator assembly, the structure of the electronic terminal can be simplified, the assembly of the electronic terminal is simpler, and the assembly precision is improved; in addition, only one stator assembly is needed for realizing vibration sounding and vibration feedback, so that one stator assembly can be saved, the cost of the electronic terminal is reduced, the installation space of one stator assembly can be saved, the size required by the electronic terminal can be reduced, and the miniaturization of the electronic terminal is facilitated.
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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of an exploded view of one embodiment of an excited vibration module according to the present invention;
fig. 2 is a schematic cross-sectional view of the excited vibration module of fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
11 | |
| 12 | |
111 | |
| 112 | |
120 | Coil |
| 2 | |
21 | |
| 22 | |
221 | |
| 221a | |
3 | |
| 31 | |
32 | |
| 321 | |
322 | |
| 321a | |
33 | First elastic connecting |
| 331 | First avoiding |
34 | Second elastic connecting |
| 341 | Second avoiding port |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" and/or "appears throughout, the meaning includes three parallel schemes, for example," A and/or B "includes scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides an excited vibration assembly.
Referring to fig. 1 and 2, in an embodiment of the present invention, the excited vibration module is used for an electronic terminal including a fixing portion and a vibrating portion, the excited vibration module including:
the stator assembly 1 comprises a first shell 11 and a stator 12 fixedly arranged on the first shell 11;
a first vibrator unit 2 including a second case 21 fixedly connected to the vibrating portion and a first vibrator 22 provided in the second case 21; and
a second vibrator unit 3 including a third case 31 fixed to the first case 11, a second vibrator 32 housed in the third case 31, and a first elastic connecting member 33 connecting the third case 31 and the second vibrator 32; the third shell 31 and/or the first shell 11 are/is used for being fixedly connected with the fixing part;
the first vibrator component 2 is used for driving the vibrating part to vibrate and sound under the electromagnetic action;
the second vibrator 32 is used for generating vibration feedback under the action of electromagnetism.
In the present invention, the stator 12 includes a coil, and the first vibrator 22 and the second vibrator 32 each include a magnet, or the stator 12 includes a magnet, and the first vibrator 22 and the second vibrator 32 each include a coil, so that the first vibrator assembly 2 and the second vibrator 32 can generate vibration relative to the stator assembly 1 through electromagnetic action. It can be understood that the stator assembly 1 and the first vibrator assembly 2 form an exciter for driving the vibrating portion of the electronic terminal to vibrate and generate sound, and the stator assembly 1 and the second vibrator assembly 3 form a vibration motor for providing vibration feedback to the electronic terminal. Without loss of generality, the electronic terminal can be, but is not limited to, a mobile phone, a tablet computer and the like. Taking a mobile phone as an example, the vibrating portion may be a screen or a rear case of the mobile phone, and the fixing portion is a middle frame connected between the screen and the rear case on the mobile phone.
In the technical scheme of the invention, the stator assembly 1 is used for both an exciter and a vibration motor, namely, only one stator assembly 1 is needed for realizing vibration sounding of a vibration part of the electronic terminal and providing vibration feedback, so that the electronic terminal only needs to configure an installation structure for the stator assembly 1, the structure of the electronic terminal can be simplified, the assembly of the electronic terminal is simpler, and the assembly precision is favorably improved; in addition, only one stator assembly 1 is needed for realizing vibration sounding and vibration feedback, so that one stator assembly 1 can be saved, the cost of the electronic terminal is reduced, the installation space of one stator assembly 1 can be saved, the size required by the electronic terminal can be reduced, and the miniaturization of the electronic terminal is facilitated.
Alternatively, the second housing 21 is adhesively fixed to the vibrating portion of the electronic terminal; the bonding mode is convenient to operate, is beneficial to the production and the manufacture of products, and can realize the fixed connection between the second shell 21 and the vibrating part of the electronic terminal (such as a screen or a rear shell of a mobile phone) under the condition that the second shell 21 and the vibrating part of the electronic terminal are not changed or damaged in structure.
In the present embodiment, further, the stator 12 includes a coil 120, the first vibrator 22 includes a first magnet 221, and the second vibrator 32 includes a second magnet 321. That is, in this embodiment, only one coil 120 needs to be adopted, so that the vibration sounding of the vibration portion of the electronic terminal and the provision of the vibration feedback can be realized at the same time, the structure of the product is simple, and one coil 120 can be saved, thereby saving the cost. In addition, optionally, the first magnet 221 is usually fixed in the second housing 21 by bonding, which is convenient to operate on one hand and is beneficial to the production and manufacture of products; however, the design is not limited thereto, and in other embodiments, the first magnet 221 may also be, but not limited to, fixedly connected to the second housing 21 by at least one of a screw locking and a snap connection.
When the stator 12 includes the coil 120, since the vibration motor and the exciter have different frequencies, the motor frequency is set to be 100HZ or lower and the screen sound exciter frequency is set to be 200HZ or higher, so that the two do not interfere with each other; specifically, when the ac power below 100HZ is applied to the coil 120, the second vibrator 32 resonates to provide vibration feedback, and at this time, since the ac power below 100HZ is not the resonant frequency of the first vibrator 22, the first vibrator 22 vibrates, but the amplitude thereof is small, and cannot drive the vibration portion of the electronic terminal to vibrate and sound; when the ac power of 200HZ or more is applied to the coil 120, the first vibrator 22 resonates and drives the vibrating portion of the electronic terminal to vibrate and generate sound, and at this time, since 200HZ or more is not the resonant frequency of the second vibrator 32, the second vibrator 32 vibrates, but the amplitude thereof is small, and thus vibration feedback cannot be provided.
In addition, in other embodiments, when the stator 12 includes a magnet, the first vibrator 22 includes a first coil, and the second vibrator 32 includes a second coil, the vibration feedback can be provided by only passing ac power with corresponding frequency into the first coil and only driving the first vibration component to drive the vibration portion of the electronic terminal to vibrate and generate sound when vibration sound generation is required, and only passing ac power with corresponding frequency into the second coil and only driving the second vibrator 32 to vibrate when vibration feedback is required.
In this embodiment, further, the coil 120 is a flat coil;
the first magnet 221 includes two first sub-magnets 221a oppositely disposed, and a first magnetic gap is formed between the two first sub-magnets 221 a;
the second magnet 321 includes two second sub-magnets 321a oppositely disposed, and a second magnetic gap is formed between the two second sub-magnets 321 a;
one side of the flat coil is movably inserted into the second magnetic gap, and the other side of the flat coil is movably inserted into the first magnetic gap.
In this embodiment, the magnetizing directions of the two first sub-magnets 221a are the same and are both perpendicular to the vibration direction of the first vibrator assembly 2; the magnetizing directions of the two second sub-magnets 321a are the same and are perpendicular to the vibration direction of the second vibrator 32, and the magnetizing directions of the second sub-magnets 321a and the first sub-magnets 221a are opposite.
In this embodiment, the coil 120 is a flat coil, and the first magnet 221 and the second magnet 321 are both of two opposite and spaced sub-magnets, so that the whole magnetic circuit has a simple structure and is easy to produce and manufacture. However, the present design is not limited thereto, and other magnetic circuit structures may be adopted in other embodiments of the present invention, for example, the coil 120 may also adopt a ring coil, and the first magnet 221 and the second magnet 321 adopt corresponding structures, as long as the coil 120 can drive the first vibrator assembly 2 and the second vibrator 32 to vibrate respectively when an alternating current of corresponding frequencies is input.
Further, the first housing 11 is provided with a mounting groove 111, and one side of the flat coil is accommodated and fixed in the mounting groove 111, so that the flat coil is not prone to falling, and the reliability of the mechanical test of the stator assembly 1 is improved. Optionally, the flat coil is bonded in the mounting groove 111, and the bonding mode is convenient to operate and is beneficial to production and manufacturing of products. Further, alternatively, the first housing 11 is partially bulged to form a bulged portion, and the mounting groove 111 is formed on the other side of the bulged portion; it will be appreciated that the protuberance will be removably inserted into the second magnetic gap along with one side of the flat coil.
Further, the second vibrator 32 further includes a mass 322, and the mass 322 is fixedly connected to the second magnet 321. It can be understood that the addition of the mass 322 is beneficial to improving the vibration effect generated by the second vibrator 32. Of course, in other embodiments, the mass 322 may not be added if the mass of the second magnet 321 is already capable of generating effective vibration. Further optionally, the mass 322 is frame-shaped, and the second magnet 321 is fixed in the mass 322; in this way, the mass of the second vibrator 32 can be made more symmetrical in the overall distribution, thereby facilitating smooth vibration of the second vibrator 32. In this embodiment, the mass block 322 is in a rectangular frame shape. However, the design is not limited thereto, and in other embodiments, the mass 322 may also be, but not limited to, a circular frame shape, a hexagonal frame shape, and the like.
Optionally, one end of the first elastic connecting member 33 is connected to the third housing 31, and the other end is connected to the mass 322; however, the design is not limited thereto, and in other embodiments, the other end of the first elastic connecting element 33 may also be connected to the second magnet 321; in still other embodiments, the other end of the first elastic connecting member 33 can also connect the mass 322 and the second magnet 321 at the same time.
Further optionally, the first elastic connector 33 is located on a side of the second vibrator 32 away from the stator assembly 1 so as to provide elasticity to the second vibrator 32 along its vibration direction. Optionally, the first elastic connecting member 33 is provided with a first avoiding opening 331a, and one side of the flat coil can movably pass through the first avoiding opening 331a, so that the second vibrator assembly 3 has a more compact structure, and the miniaturization of the product volume is facilitated.
Further, the second vibrator 32 is connected to the first housing 11 through the second elastic connection member 34 to provide a more sufficient amount of reciprocating vibration elasticity to the second vibrator 32 through the second elastic connection member 34. Similarly, one end of the second elastic connecting element 34 is connected to the first housing 11, and the other end is connected to the mass 322 and/or the second magnet 321. Optionally, for the elastic sheet type second elastic connecting piece 34, a second avoiding opening 341 is formed thereon, and one side of the flat coil can movably pass through the second avoiding opening 341; it can be understood that the elastic connecting piece of the spring piece type has good elasticity and simple structure.
Further, the third housing 31 is fixedly connected with the first housing 11; therefore, only one of the first housing 11 and the third housing 31 needs to be fixedly connected with the fixing portion of the electronic terminal, so that a fixing connection process can be saved in the process of assembling the electronic terminal, and the assembling efficiency of the electronic terminal is improved. Optionally, the third shell 31 and the first shell 11 are welded and fixed, and the welding mode is convenient to operate, so that the production and the manufacture of products are facilitated; however, the design is not limited thereto, and in other embodiments, the third housing 31 and the first housing 11 may be further, but not limited to, fixedly connected by at least one of screw locking and snap-in connection.
Further, the first housing 11 is provided with a mounting protrusion 112 protruding laterally from the third housing 31, the mounting protrusion 112 is used for fixedly connecting with a fixing portion of the electronic terminal; in this way, the connection and fixation with the electronic terminal fixing portion can be conveniently realized by the mounting convex portion 112 without additionally adding a bridge member between the first housing 11 and the fixing portion. Further optionally, the mounting convex portion 112 is provided in a plurality, and the plurality of mounting convex portions 112 are distributed at intervals along the circumferential direction of the first housing 11, so that the fixed connection between the first housing 11 and the fixing portion is more reliable and stable. Generally, the mounting protrusion 112 may have a mounting hole for a fastener (such as a screw or a rivet) to pass through to be fixedly connected to the fixing portion; however, the design is not limited thereto, and in other embodiments, the mounting protrusion 112 and the fixing portion may be fixed by other fixing methods such as welding.
Further, the first housing 11 and the first vibrator assembly 2 are connected by a third elastic connection member (not shown); in this way, the first vibrator assembly 2 and the stator assembly 1 can be connected together, so that the alignment procedure between the first vibrator assembly 2 and the stator assembly 1 is reduced in the assembly process of assembling the excited vibrator assembly on an electronic terminal, and the assembly efficiency is improved. Alternatively, when the first vibrator 22 includes the first magnetic body 221, the third elastic connecting member may be connected to the first magnetic body 221; however, the design is not limited thereto, and in other embodiments, the third elastic connecting element may also be connected to the second housing 21; in still other embodiments, the third elastic connecting member may be further connected to both the first magnet 221 and the second housing 21.
The present invention further provides an electronic terminal, which includes a fixing portion, a vibrating portion and an excited vibration component, and the specific structure of the excited vibration component refers to the above embodiments. The fixed part is fixedly connected with the first shell and/or the third shell of the excitation vibration component; and the vibrating part is fixedly connected with the second shell of the excitation vibrating assembly. The first vibrator component of the excitation vibration component is used for driving the vibration part to vibrate and sound; and exciting the second vibrator of the vibration assembly to generate vibration feedback.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An excited vibration assembly for an electronic terminal, the electronic terminal including a fixed portion and a vibrating portion, the excited vibration assembly comprising:
the stator assembly comprises a first shell and a stator fixedly arranged on the first shell;
the first vibrator assembly comprises a second shell fixedly connected with the vibrating part and a first vibrator arranged in the second shell; and
the second oscillator assembly comprises a third shell fixed relative to the first shell, a second oscillator accommodated in the third shell and a first elastic connecting piece for connecting the third shell and the second oscillator; the third shell and/or the first shell are/is fixedly connected with the fixing part;
the first vibrator component is used for driving the vibration part to vibrate and sound under the electromagnetic action;
the second oscillator is used for generating vibration feedback under the electromagnetic action.
2. The excited vibration assembly of claim 1, wherein the stator comprises a coil, the first vibrator comprises a first magnet, and the second vibrator comprises a second magnet.
3. The excited vibration assembly of claim 2 wherein the coil is a pancake coil;
the first magnet comprises two first sub-magnets which are oppositely arranged, and a first magnetic gap is formed between the two first sub-magnets at intervals; the magnetizing directions of the two first sub-magnets are the same and are both perpendicular to the vibration direction of the first vibrator assembly;
the second magnet comprises two second sub-magnets which are oppositely arranged, and a second magnetic gap is formed between the two second sub-magnets at intervals; the magnetizing directions of the two second sub-magnets are the same and are perpendicular to the vibration direction of the second vibrator, and the magnetizing directions of the second sub-magnets are opposite to that of the first sub-magnets;
one side of the flat coil is movably inserted into the second magnetic gap, and the other side of the flat coil is movably inserted into the first magnetic gap.
4. The excited vibration assembly of claim 3 wherein the first housing defines a mounting recess, one side of the flat coil being received and secured in the mounting recess.
5. The excited vibration assembly of claim 2, wherein the second vibrator further comprises a mass fixedly connected to the second magnet.
6. The excited vibration assembly of claim 1, wherein the second transducer is connected to the first housing by a second resilient connection.
7. The excited vibration assembly of claim 1, wherein the third housing is fixedly attached to the first housing.
8. An excited vibration assembly according to claim 7, wherein the first housing is provided with a mounting boss projecting laterally from the third housing, the mounting boss being adapted to be fixedly connected to the fixing portion.
9. An excited vibration assembly according to any one of claims 1 to 8, wherein the first housing and the first vibrator assembly are connected by a third resilient connection.
10. An electronic terminal, comprising:
an excited vibration assembly as claimed in any one of claims 1 to 9;
the fixing part is fixedly connected with the first shell and/or the third shell of the excitation vibration assembly; and
the vibration part is fixedly connected with the second shell of the excitation vibration assembly;
the first vibrator component of the excitation vibration component is used for driving the vibration part to vibrate and sound;
the second vibrator of the excitation vibration assembly is used for generating vibration feedback.
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| US6169348B1 (en) * | 1998-12-30 | 2001-01-02 | Samsung Electro-Mechanics Co., Ltd. | Flat type two-phase vibration motor |
| CN101807841A (en) * | 2009-02-17 | 2010-08-18 | 比锐精密设备(深圳)有限公司 | Voice coil motor |
| CN206302322U (en) * | 2015-10-16 | 2017-07-04 | 日本电产精密株式会社 | Vibrating motor |
| CN105305761A (en) * | 2015-10-27 | 2016-02-03 | 瑞声光电科技(常州)有限公司 | Vibration motor |
| CN206023534U (en) * | 2016-08-16 | 2017-03-15 | 歌尔股份有限公司 | Resonant motor |
| JP2020014371A (en) * | 2018-07-19 | 2020-01-23 | 池州市弘港科技▲電▼子有限公司Ｃｈｉｚｈｏｕｓｈｉ Ｈｏｎｇｇａｎｇ Ｓｃｉｅｎｃｅ ａｎｄ Ｔｅｃｈｎｏｌｏｇｙ Ｅｌｅｃｔｒｏｎｉｃｓ ＣＯ．，Ｌｔｄ | Micro linear vibrator capable of vibrating at two frequencies in two directions |
| CN111817525A (en) * | 2020-07-31 | 2020-10-23 | 歌尔股份有限公司 | Excited vibration module and electronic terminal |
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|---|---|
| CN111817525A (en) | 2020-10-23 |
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