WO2021147769A1 - Appareil de vibration et dispositif électronique - Google Patents

Appareil de vibration et dispositif électronique Download PDF

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Publication number
WO2021147769A1
WO2021147769A1 PCT/CN2021/071798 CN2021071798W WO2021147769A1 WO 2021147769 A1 WO2021147769 A1 WO 2021147769A1 CN 2021071798 W CN2021071798 W CN 2021071798W WO 2021147769 A1 WO2021147769 A1 WO 2021147769A1
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WO
WIPO (PCT)
Prior art keywords
sub
coil
vibrator
guide shaft
magnet
Prior art date
Application number
PCT/CN2021/071798
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English (en)
Chinese (zh)
Inventor
罗斌
陈旭
Original Assignee
维沃移动通信有限公司
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Filing date
Publication date
Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Publication of WO2021147769A1 publication Critical patent/WO2021147769A1/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
    • H02K33/16—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

Definitions

  • the present invention relates to the technical field of communication equipment, and in particular to a vibration device and electronic equipment.
  • the performance of electronic devices continues to be optimized.
  • more and more electronic devices are equipped with vibration motors.
  • the electronic devices realize the vibration function through the vibration of the vibration motor.
  • the electronic devices can alert the user through vibration when they are called or received a text message.
  • Linear motors have been adopted by more and more electronic devices due to their advantages of large vibration and stable performance.
  • the vibration of the linear motor cannot be sensed, that is, the vibration of the vibration device is weak, and it cannot achieve good vibration prompts. Effect.
  • the invention discloses a vibrating device and electronic equipment to solve the problem that the vibrating device has a poor vibration prompt effect when the electronic device is placed in a pocket or the electronic device is attached to the human body.
  • an embodiment of the present invention discloses a vibration device, including a bracket, a guide shaft, a vibrator, a first electromagnetic coil, a second electromagnetic coil, a first permanent magnet, and a second permanent magnet, wherein:
  • the guide shaft is disposed on the support
  • the vibrator is rotatably disposed on the guide shaft and can move along the guide shaft
  • the first permanent magnet and the second permanent magnet are both disposed on the vibrator
  • the first electromagnetic coil and the second electromagnetic coil are both arranged on the support:
  • the first electromagnetic coil When the first electromagnetic coil is energized and the second electromagnetic coil is de-energized, the first electromagnetic coil cooperates with the first permanent magnet to drive the vibrator to reciprocate along the guide shaft ;
  • the second electromagnetic coil cooperates with the second permanent magnet to drive the vibrator to rotate around the guide shaft.
  • an embodiment of the present invention discloses an electronic device including the vibration device described in the first aspect.
  • the vibrating device disclosed in the embodiment of the present invention by arranging the first permanent magnet and the second permanent magnet on the vibrator, and by controlling the on and off of the first electromagnetic coil and the second electromagnetic coil, the first permanent magnet can be separately realized.
  • the driving of the magnet and the second permanent magnet can in turn enable the first permanent magnet to drive the vibrator to vibrate in the first mode in one state and the second permanent magnet to drive the vibrator to vibrate in the second mode in another state.
  • FIG. 1 is a schematic structural diagram of a first coil of a vibrating device disclosed in an embodiment of the present invention in a first energized state.
  • Arrow A in FIG. 1 indicates a moving direction of a vibrator 300 when vibrating in the first mode;
  • FIG. 2 is a schematic diagram of the structure of the first coil of the vibrating device disclosed in the embodiment of the present invention in the second energized state.
  • Arrow B in FIG. 2 indicates another moving direction of the vibrator 300 when vibrating in the first mode;
  • FIG. 3 is a schematic diagram of the structure of the first coil of the vibration device disclosed in the embodiment of the present invention in a third energized state;
  • FIG. 4 is a schematic diagram of the structure of the second coil of the vibration device disclosed in the embodiment of the present invention in the first energized state;
  • FIG. 5 is a schematic structural diagram of the second coil of the vibration device disclosed in the embodiment of the present invention in a second energized state.
  • an embodiment of the present invention discloses a vibration device, and the disclosed vibration device can be applied to electronic equipment.
  • the vibration device disclosed in the embodiment of the present invention includes a support 100, a guide shaft 200, a vibrator 300, a first electromagnetic coil, a second electromagnetic coil, a first permanent magnet, and a second permanent magnet.
  • the bracket 100 is a basic component of the vibration device, and the bracket 100 can provide an installation foundation for other parts of the vibration device.
  • the guide shaft 200 is disposed on the support 100.
  • the guide shaft 200 is fixed to the support 100.
  • the vibrator 300 is rotatably disposed on the guide shaft 200 and can move along the guide shaft 200, and the vibrator 300 moves along the guide shaft 200, so as to realize the vibration in the first mode.
  • the vibrator 300 rotates around the guide shaft 200, so as to realize the vibration in the second mode.
  • both the first permanent magnet and the second permanent magnet are arranged on the vibrator 300. Both the first electromagnetic coil and the second electromagnetic coil are disposed on the support 100. The first permanent magnet is used to cooperate with the first electromagnetic coil, and the second permanent magnet is used to cooperate with the second electromagnetic coil.
  • the first electromagnetic coil When the first electromagnetic coil is energized and the second electromagnetic coil is de-energized, the first electromagnetic coil cooperates with the first permanent magnet to drive the vibrator 300 to reciprocate along the guide shaft 200.
  • the second electromagnetic coil is in a de-energized state, so it will not affect the coordination of the first electromagnetic coil and the first permanent magnet.
  • the magnetic field (alternating magnetic field) generated by the first electromagnetic coil will affect the first electromagnetic coil when the first electromagnetic coil is energized.
  • the permanent magnet generates magnetic force, so that the first permanent magnet drives the vibrator 300 to reciprocate along the guide shaft 200, and finally realizes the vibration of the entire vibrating device in the first mode.
  • the second electromagnetic coil cooperates with the second permanent magnet to drive the vibrator 300 to rotate around the guide shaft 200.
  • the first electromagnetic coil is in a de-energized state, so it will not affect the cooperation of the second electromagnetic coil and the second permanent magnet.
  • the magnetic field (alternating magnetic field) generated by the second electromagnetic coil will affect the second electromagnetic coil when the second electromagnetic coil is energized.
  • the permanent magnet generates magnetic force, so that the second permanent magnet drives the vibrator 300 to rotate around the guide shaft 200, thereby realizing the vibration of the entire vibrating device in the second mode.
  • the vibration direction of the vibration device in the first mode is different from the vibration direction in the second mode.
  • the vibration device disclosed in the embodiment of the present invention by arranging the first permanent magnet and the second permanent magnet on the vibrator 300, and by controlling the on and off of the first electromagnetic coil and the second electromagnetic coil, the The driving of the permanent magnet and the second permanent magnet can in turn enable the first permanent magnet to drive the vibrator 300 to achieve the first mode of vibration in one state and the second permanent magnet to drive the vibrator 300 to achieve the second mode in another state. Vibration. It can be seen that the vibration device disclosed in the embodiment of the present invention can achieve vibration in different directions. In certain scenarios such as when the electronic device is placed in a pocket or the electronic device is attached to the human body, the electronic device using this vibration device can achieve more directions. Vibration, in turn, can improve the vibration prompt effect of the electronic device.
  • the bracket 100 is the basic component of the vibrating device.
  • the structure of the bracket 100 can be various.
  • the bracket 100 has an inner cavity 100a, and the guide shaft 200 is fixedly installed on the bracket 100 and at least partially located in the inner cavity 100a. 300.
  • the first electromagnetic coil, the second electromagnetic coil, the first permanent magnet, and the second permanent magnet are all arranged in the inner cavity 100a so as to be protected by the bracket 100.
  • this assembly structure enables most of the components of the vibrating device or most of the structures of some components to be located in the inner cavity 100a, thereby facilitating the modular design of the vibrating device.
  • the vibration device disclosed in the embodiment of the present invention may also include a flexible wire or a flexible circuit board, and the flexible wire or the flexible circuit board may be partially fixed on In the inner cavity 100a and electrically connected to the first electromagnetic coil or the second electromagnetic coil, the flexible wire or another part of the flexible circuit board can extend out of the inner cavity 100a to be electrically connected to the power supply side of the electronic device.
  • the flexible wire or another part of the flexible circuit board may extend out of the inner cavity 100a through the through hole opened in the bracket 100.
  • the bracket 100 may include a middle frame 110, a first cover 120, and a second cover 130.
  • the first cover 120 and the second cover 130 are respectively fixed on two opposite sides of the middle frame 110. port.
  • the first cover 120 and the second cover 130 may be respectively fixed to the two opposite ports of the middle frame 110 by welding, bonding, or the like.
  • the first cover 120, the second cover 130 and the middle frame 110 enclose an inner cavity 100a.
  • the first cover 120 and the second cover 130 can also be detachably installed at two ports opposite to the middle frame 110. In this case, the first cover 120 and the second cover 130 can be detached. Therefore, it is convenient to repair or replace the components in the inner cavity 100a.
  • the inner cavity 100a may include a top wall 100a1, a bottom wall 100a2, and a side wall 100a3. Between the walls 100a2. One end of the guide shaft 200 is fixed to the top wall 100a1, and the other end of the guide shaft 200 is fixed to the bottom wall 100a2. In this case, the guide shaft 200 is installed based on the bracket 100, which is beneficial to improve the stability of the vibrator 300 rotating around the guide shaft 200.
  • the top wall 100a1 may be the inner surface of the first cover 120
  • the bottom wall 100a2 may be the inner surface of the second cover 130
  • the side wall 100a3 may be the inner surface of the middle frame 110.
  • the top wall 100a1 may be provided with a first mounting hole
  • the bottom wall 100a2 may be provided with a second mounting hole
  • one end of the guide shaft 200 may be fixed in the first mounting hole by welding, interference fit, etc.
  • the guide shaft 200 The other end can also be fixed in the second mounting hole by welding, interference fit, etc.
  • the first electromagnetic coil and the second electromagnetic coil are both arranged on the support 100, and the structures of the first electromagnetic coil and the second electromagnetic coil may be various.
  • the first electromagnetic coil and the second electromagnetic coil may be an integral structure or a split structure.
  • the first permanent magnet and the second permanent magnet may be an integral structure or a split structure.
  • the first electromagnetic coil may include a first sub-coil 410 and a second sub-coil 420. The first sub-coil 410 is disposed on the top wall 100a1, and the second sub-coil 420 is disposed on the top wall 100a1.
  • the bottom wall 100a2 correspondingly, the first permanent magnet may include a first sub-magnet 610 and a second sub-magnet 620 disposed on the vibrator 300.
  • the first sub-magnet 610 is disposed at one end of the vibrator 300 facing the top wall 100a1 and is connected to the first sub-magnet.
  • a sub-coil 410 is arranged oppositely, so that the first sub-magnet 610 can be matched with the first sub-coil 410.
  • the second sub-magnet 620 is disposed at one end of the vibrator 300 facing the bottom wall 100 a 2 and is disposed opposite to the second sub-coil 420.
  • the direction of the energized current of the first sub-coil 410 and the second sub-coil 420 is adjusted to drive the vibrator 300 to reciprocate along the guide shaft 200.
  • One of the first sub-coil 410 and the first sub-magnet 610 and the second sub-coil 420 and the second sub-magnet 620 achieves magnetic attraction, and the other achieves magnetic repulsion, so as to realize the reciprocating movement of the vibrator 300 through cooperation.
  • the vibration process of the vibrating device in the first mode will be described in detail below with reference to the accompanying drawings.
  • FIG. 1 When the energizing direction of the first sub-coil 410 and the second sub-coil 420 is the first direction, The first sub-coil 410 and the first sub-magnet 610 magnetically repel, and the second sub-coil 420 and the second sub-magnet 620 are magnetically attracted.
  • the vibrator 300 is in the first sub-magnet 610 and the second sub-magnet 620. Driven by moving downward in the direction of arrow A. Please refer to FIG.
  • the vibrator 300 is driven by the first sub-magnet 610 and the second sub-magnet 620 to move in the direction of the arrow B.
  • the vibrator 300 passes through the first sub-coil 410 and
  • the change of the energization direction of the second sub-coil 420 further realizes that the vibrator 300 alternately moves in the direction of the arrow A and the arrow B to achieve the purpose of reciprocating movement.
  • the first direction is opposite to the second direction.
  • the first sub-coil 410 and the first sub-magnet 610 are magnetically attracted, and the first sub-coil 410 is magnetically attracted to the first sub-magnet 610.
  • the two sub-coils 420 and the second sub-magnet 620 are magnetically attracted.
  • the vibrator 300 can stop moving, thereby realizing the stop of the vibration.
  • the first sub-coil 410 and the second sub-coil 420 both pass through an alternating current.
  • the first electromagnetic coil includes the first sub-coil 410 and the second sub-coil 420
  • the first permanent magnet includes the first sub-magnet 610 and the second sub-magnet 620, which is beneficial to the first electromagnetic coil and the second sub-magnet.
  • the layout of the first permanent magnet on the bracket 100 is more reasonable, and at the same time, the arrangement of the first electromagnetic coil and the first permanent magnet on the bracket 100 can be made more flexible, so that the quality of the vibration device is more balanced, which is beneficial to improve the stability of vibration. .
  • the first sub-coil 410 may be a first toroidal coil winding, and the first toroidal coil winding may be arranged around the guide shaft 200.
  • the first sub-magnet 610 may be arranged around the guide shaft 200.
  • the first sub-coil 410 and the first sub-magnet 610 are both ring-shaped structural members, which facilitates the application of force between the first sub-coil 410 and the first sub-magnet 610, so that the vibrator 300 achieves a more balanced effect. Vibration to avoid the polarization phenomenon caused by uneven force.
  • the second sub-coil 420 may be a second toroidal coil winding, the second toroidal coil winding may be arranged around the guide shaft 200, and the second sub-magnet 620 may be arranged around the guide shaft 200.
  • the second sub-coil 420 and the second sub-magnet 620 are both ring-shaped structural members, which facilitates the application of force between the second sub-coil 420 and the second sub-magnet 620, so that the vibrator 300 achieves a more balanced Vibration to avoid the polarization phenomenon caused by uneven force.
  • the first sub-coil 410 can be fixed on the inner surface of the first cover 120, and can be installed along with the installation of the first cover 120 on the middle frame 110.
  • the second sub-coil 420 can be fixed on the inner surface of the second cover 130, and can be installed along with the installation of the second cover 130 on the middle frame 110.
  • the second electromagnetic coil may include a third sub-coil 510 and a fourth sub-coil 520
  • the side wall 100a3 may include a first area and a second area.
  • the first area and the second area may be disposed oppositely, the third sub-coil 510 is disposed in the first area, the fourth sub-coil 520 is disposed in the second area, and the second permanent magnet includes third sub-magnets 710 disposed on the vibrator 300 at intervals.
  • the fourth sub-magnet 720, the third sub-magnet 710 is arranged opposite to the third sub-coil 510, and the fourth sub-magnet 720 is arranged opposite to the fourth sub-coil 520.
  • the third sub-coil 510 and the fourth sub-coil 520 when the energization direction of the third sub-coil 510 and the fourth sub-coil 520 is the fourth direction, the third sub-coil 510 and the third sub-magnet 710 magnetically repel each other, and at the same time, the fourth sub-coil 520 And the fourth sub-magnet 720 magnetically repel, thereby driving the vibrator 300 to rotate in another direction, and finally by controlling the energization direction of the third sub-coil 510 and the fourth sub-coil 520 to control the vibrator 300 to achieve reciprocating rotation, thereby realizing the vibration device in the Vibration in the second mode.
  • the third direction is opposite to the fourth direction.
  • the side wall 100a3 may be provided with a first installation space and a second installation space, and the third sub-coil 510 may be fixed in the first installation space.
  • the third sub-coil 510 may be connected by bonding or clamping.
  • the way is fixed in the first installation space.
  • the fourth sub-coil 520 may be fixed in the second installation space.
  • the fourth sub-coil 520 may be fixed in the second installation space by bonding or clamping.
  • the first installation space and the second installation space may be installation grooves or installation holes opened in the side wall 100a3. The above-mentioned manner of arranging the third sub-coil 510 and the fourth sub-coil 520 can reduce the occupied space of the third sub-coil 510 and the fourth sub-coil 520 in the inner cavity 100a.
  • the third sub-magnet 710 and the fourth sub-magnet 720 may be symmetrically arranged on the vibrator 300, thereby reducing the centrifugal phenomenon during the rotation of the vibrator 300.
  • the middle frame 110 may include a middle section 111 and two edge sections 112, the middle section 111 is located between the two edge sections 112, and the outer surface of the edge section 112 It is located in the same plane as the outer surface of the middle section 111, and the wall thickness of the middle section 111 is greater than the wall thickness of the edge section 112.
  • both the first installation space and the second installation space can be opened in the middle section 111. In this case, more coils can be arranged in the first installation space and the second installation space to form third sub-coils respectively.
  • the 510 and the fourth sub-coil 520 can in turn enable the third sub-coil 510 and the fourth sub-coil 520 to form a stronger magnetic field in the energized state, and ultimately achieve the purpose of better driving the vibrator 300 to rotate.
  • the distance between the third sub-coil 510 and the third sub-magnet 710 and the distance between the fourth sub-coil 520 and the fourth sub-magnet 720 can be made smaller, which can further increase The mutual magnetic force achieves the purpose of driving the vibrator 300 to rotate better.
  • the first cover 120 may include a first cover body 121 and a first enclosure 122, and the first enclosure 122 is fixed to the first cover body 121 Specifically, the first enclosure 122 and the first cover body 121 may be an integral structure. The part of the first cover body 121 located outside the first enclosure 122 can form a first limiting sinker with the first enclosure 122. During the installation process, the first limiting sinker can interact with a port of the middle frame 110. The surface on which it is located is limited and matched, so as to improve the stability of assembly, and at the same time, it also facilitates the rapid assembly of the bracket 100.
  • the first sub-coil 410 may be positioned in the space enclosed by the first enclosure 122, so as to improve the stability of assembly.
  • the second cover 130 may include a second cover body 131 and a second enclosure 132, and the second enclosure 132 is fixed on the inner surface of the second cover body 131.
  • the second enclosure 132 may be an integral structure with the second cover body 131.
  • the part of the second cover body 131 located on the outside of the second enclosure 132 can form a second limit sinking table with the second enclosure 132.
  • the second limit sinking table can interact with the other of the middle frame 110.
  • the surface where the port is located is limited and matched, which can improve the stability of the assembly.
  • it also facilitates the rapid assembly of the bracket 100.
  • the second sub-coil 420 may be positioned in the space enclosed by the second enclosure 132, so as to improve the stability of assembly.
  • the vibrator 300 may be a cylindrical structural member, and the vibrator 300 may be sleeved on the guide shaft 200.
  • the vibrator 300 is sleeved on the guide shaft 200, which is beneficial to make the force exerted by the vibrator 300 on the guide shaft 200 during the rotation process of the vibrator 300 to be more balanced, and to prevent the guide shaft 200 from being damaged by force.
  • the vibrator 300 can be matched with the guide shaft 200 through the bearing 800, and the bearing 800 can realize the movement of the vibrator 300 along the guide shaft 200 and the rotation of the vibrator 300 relative to the guide shaft 200.
  • the inner ring of the bearing 800 can be sleeved on the guide shaft 200, and then slidably fit with the guide shaft 200 in the extending direction of the guide shaft 200, and the outer ring of the bearing 800 can be fixed to the center hole of the vibrator 300 Among them, the vibrator 300 can pass through the rolling elements between the outer ring and the inner ring, thereby realizing rotation relative to the guide shaft 200, and the vibrator 300 can slide along the guide shaft 200 through the bearing 800.
  • the vibrator 300 is not limited to be assembled with the guide shaft 200 through the bearing 800.
  • the vibrator 300 can be directly sleeved on the guide shaft 200, and the sliding and rotating cooperation is realized through the shaft hole.
  • a gap may be formed between the inner wall of the central hole of the vibrator 300 and the guide shaft 200, so as to realize the movable setting of the vibrator 300.
  • the first sub-magnet 610, the second sub-magnet 620, the third sub-magnet 710, and the fourth sub-magnet 720 disclosed in the embodiment of the present invention may all be magnet steel, of course, they may also be other types.
  • the magnetic parts are not limited in the embodiment of the present invention.
  • the embodiment of the present invention discloses an electronic device, and the disclosed electronic device includes the vibration device described in the above embodiment.
  • the electronic devices disclosed in the embodiments of the present invention can be mobile phones, tablet computers, e-book readers, game consoles, car navigation systems, wearable devices (such as smart watches), etc., of course, can also be other types of devices.
  • the present invention The embodiments do not limit the specific types of electronic devices.

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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

L'invention concerne un appareil de vibration et un dispositif électronique. L'appareil de vibration comprend un support (100), un arbre de guidage (200), un vibreur (300), des premières bobines électromagnétiques (410, 420), des secondes bobines électromagnétiques (510, 520), des premiers aimants permanents (610, 620) et des seconds aimants permanents (710, 720). L'arbre de guidage (200) est disposé sur le support (100) ; le vibreur (300) est disposé en rotation sur l'arbre de guidage (200) et peut se déplacer le long de l'arbre de guidage (200) ; les premiers aimants permanents (610, 620) et les seconds aimants permanents (710, 720) sont disposés sur le vibreur (300) ; les premières bobines électromagnétiques (410, 420) et les secondes bobines électromagnétiques (510, 520) sont disposées sur le support (100). Dans le cas où les premières bobines électromagnétiques (410, 420) sont sous tension et les secondes bobines électromagnétiques (510, 520) sont hors tension, les premières bobines électromagnétiques (410, 420) fonctionnent conjointement avec les premiers aimants permanents (610, 620) pour entraîner le vibreur (300) à effectuer un mouvement de va-et-vient le long de l'arbre de guidage (200) ; dans le cas où les premières bobines électromagnétiques (410, 420) sont hors tension et les secondes bobines électromagnétiques (510, 520) sont sous tension, les secondes bobines électromagnétiques (510, 520) fonctionnent conjointement avec les seconds aimants permanents (710, 720) pour entraîner le vibreur (300) à tourner autour de l'arbre de guidage (200).
PCT/CN2021/071798 2020-01-20 2021-01-14 Appareil de vibration et dispositif électronique WO2021147769A1 (fr)

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CN202010069561.2A CN111181343B (zh) 2020-01-20 2020-01-20 振动装置及电子设备
CN202010069561.2 2020-01-20

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CN111181343B (zh) * 2020-01-20 2021-07-30 维沃移动通信有限公司 振动装置及电子设备
CN111650827A (zh) * 2020-05-27 2020-09-11 维沃移动通信有限公司 电子设备
CN215733687U (zh) * 2020-07-10 2022-02-01 瑞声科技（南京）有限公司 一种双向驱动磁路
CN112994398B (zh) * 2021-03-04 2023-06-30 湖北工业大学 强力电磁振动器
CN114209232B (zh) * 2021-12-15 2022-12-13 中国人民解放军总医院第八医学中心 一种危重症护理用身体擦拭清洗设备

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CN1886885A (zh) * 2003-11-27 2006-12-27 布劳恩股份有限公司 用于小型电器的电动机
CN1751809A (zh) * 2004-09-24 2006-03-29 三星电机株式会社 用于通信终端的多模式振动产生器
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