CN114172340B - Vibrating device and intelligent terminal - Google Patents
Vibrating device and intelligent terminal Download PDFInfo
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- CN114172340B CN114172340B CN202111515168.2A CN202111515168A CN114172340B CN 114172340 B CN114172340 B CN 114172340B CN 202111515168 A CN202111515168 A CN 202111515168A CN 114172340 B CN114172340 B CN 114172340B
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- 238000000429 assembly Methods 0.000 claims abstract description 47
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- 230000005674 electromagnetic induction Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
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- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
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- 238000005339 levitation Methods 0.000 description 1
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Classifications
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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
- H02K33/12—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moving in alternate directions by alternate energisation of two coil systems
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- Power Engineering (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The invention discloses a vibrating device and an intelligent terminal, wherein the vibrating device comprises a shell, a magnetic circuit assembly, two coil assemblies, a first magnetic attraction structure and a second magnetic attraction structure, wherein the magnetic circuit assembly is arranged in the shell and comprises a first magnet structure and a second magnet structure which form magnetic fields distributed along a third direction, and the magnetic circuit assembly can vibrate in a first direction and a second direction respectively; the two coil assemblies are fixedly arranged in the shell and are respectively arranged at two sides of the magnetic circuit assembly along the third direction, each coil assembly is positioned in a magnetic field generated by the magnetic circuit assembly, the two coil assemblies are used for forming electromagnetic thrust along the first direction with the first magnet structure and forming electromagnetic thrust along the second direction with the second magnet structure when alternating current is conducted, and the first magnetic attraction structure is arranged in the shell and interacts with the first magnet structure to form magnetic restoring force along the first direction; the second magnetic attraction structure is arranged in the shell and interacts with the second magnet structure to form magnetic restoring force along a second direction.
Description
Technical Field
The invention relates to the technical field of vibrating devices, in particular to a vibrating device and an intelligent terminal.
Background
With the development of miniaturization and light-weight of consumer electronic products, various components in the consumer electronic products need to be correspondingly adjusted. The elastic sheet is used as a supporting element in the vibration motor for transmitting the vibration of the mass body, and the manufacturing process, the strength and the service life of the elastic sheet seriously restrict the use of the linear vibrator.
For example, in a conventional vibration motor, a space needs to be reserved for the elastic sheet, which affects the miniaturization design, and meanwhile, the elastic sheet is easy to deform in the process of processing and using, so that noise is generated, and the service effect and service life of the vibration motor are affected.
Disclosure of Invention
The invention mainly aims to develop a vibrating device with motion durability, reliability and stability and an intelligent terminal, and mechanical spring plates are omitted.
To achieve the above object, the present invention provides a vibration device including:
a housing having intersecting first, second and third directions;
a magnetic circuit assembly disposed within the housing, the magnetic circuit assembly including a first magnet structure and a second magnet structure formed with magnetic fields distributed along the third direction, the magnetic circuit assembly being vibratable in the first direction and the second direction, respectively;
the two coil assemblies are fixedly arranged in the shell, the planes of the two coil assemblies extend along a first direction and a second direction and are respectively arranged on two sides of the magnetic circuit assembly along the third direction, each coil assembly is positioned in a magnetic field generated by the magnetic circuit assembly, and when alternating current is conducted, the two coil assemblies are used for forming electromagnetic thrust along the first direction with the first magnet structure and forming electromagnetic thrust along the second direction with the second magnet structure;
the first magnetic attraction structure is arranged in the shell and interacts with the first magnet structure in an attraction manner to form magnetic restoring force along the first direction; the method comprises the steps of,
the second magnetic attraction structure is arranged in the shell and interacts with the second magnet structure to form magnetic restoring force along the second direction.
Optionally, the first magnetic attraction structure includes at least two first magnetic attraction pieces, and the two first magnetic attraction pieces are fixed in the shell and are respectively located at two side orientations of the magnetic circuit assembly along the third direction so as to have magnetic restoring force along the first direction at two sides of the magnetic circuit assembly along the third direction; and/or the number of the groups of groups,
the second magnetic attraction structure comprises at least two second magnetic attraction pieces, the two second magnetic attraction pieces are fixed in the shell and are respectively positioned at two side positions of the magnetic circuit assembly along the third direction, so that the magnetic return force along the second direction is provided at two sides of the magnetic circuit assembly along the third direction.
Optionally, each of the coil assemblies includes at least one coil, the coil includes two first winding sides disposed opposite to each other along the first direction, and two second winding sides disposed opposite to each other along the second direction, the two first winding sides and the first magnet structure form electromagnetic thrust along the first direction, and the two second winding sides and the second magnet structure form electromagnetic thrust along the second direction;
the first magnetic attraction pieces are arranged along the first direction along one of the first windings, and the second magnetic attraction pieces are distributed along the second direction along one of the second windings.
Optionally, the magnetic circuit assembly further includes a first mounting plate, the first mounting plate is provided with the first magnet structure and the second magnet structure on two sides of the third direction, each first magnet structure includes a plurality of first magnets arranged along the first direction, and each second magnet structure includes a plurality of second magnets arranged along the second direction;
the magnetic circuit assembly is provided with a plurality of first magnetic attraction pieces corresponding to the plurality of first magnets on two sides of the third direction, and a plurality of second magnetic attraction pieces corresponding to the plurality of second magnets.
Optionally, each of the coil assemblies includes at least one coil including two second winding sides opposite in a second direction;
the two second magnetic attraction pieces are arranged between the two second winding sides at intervals along the second direction and are respectively arranged corresponding to the two second winding sides;
wherein two second magnets are arranged corresponding to two second winding sides.
Optionally, each of the coil assemblies includes two coils, each of the coils including two first winding sides opposite in a first direction;
one of the first magnetic attraction pieces is positioned between the two coils and corresponds to two first winding edges which are close to each other in the two coils;
wherein one of the first magnets is located between two of the first winding sides of the two coils that are adjacent to each other.
Optionally, each coil assembly further includes a second mounting plate, and a coil disposed on a side of the second mounting plate facing the magnetic circuit assembly;
the corresponding first magnetic attraction structure and the corresponding second magnetic attraction structure are arranged on one side of the second mounting plate towards the magnetic circuit assembly, the first magnetic attraction piece and the coil are arranged along the first direction, and the second magnetic attraction piece and the coil are arranged along the second direction.
Optionally, the first magnetic attraction structure is spaced from the first magnet structure by a limiting structure, so that a first gap along the third direction is formed between the first magnetic attraction structure and the first magnet structure; and/or the number of the groups of groups,
the second magnetic structure is spaced from the second magnet structure by a spacing structure, so that a second gap along the third direction is formed between the second magnetic structure and the second magnet structure.
Optionally, the coil assembly includes a second mounting plate, and the magnetic circuit assembly further includes a first mounting plate;
the limiting structure comprises a first friction block and a second friction block which are distributed along the third direction, the first friction block and the second friction block are respectively arranged on the opposite side surfaces of the second mounting plate and the first mounting plate, and the first friction block is propped against the second friction block to form a first gap and a second gap.
Optionally, the shell comprises an end shell and a shell body, wherein the end shell and the shell body are arranged along the second direction, the shell body is provided with a mounting cavity with an opening at one end, and the end shell covers the mounting cavity;
the magnetic circuit assembly, the coil assembly, the first magnetic attraction structure and the second magnetic attraction structure are all arranged in the installation cavity.
The invention also provides an intelligent terminal comprising the vibration device, wherein the vibration device at least comprises:
a housing having intersecting first, second and third directions;
a magnetic circuit assembly disposed within the housing, the magnetic circuit assembly including a first magnet structure and a second magnet structure formed with magnetic fields distributed along the third direction, the magnetic circuit assembly being vibratable in the first direction and the second direction, respectively;
the two coil assemblies are fixedly arranged in the shell, the planes of the two coil assemblies extend along a first direction and a second direction and are respectively arranged on two sides of the magnetic circuit assembly along the third direction, each coil assembly is positioned in a magnetic field generated by the magnetic circuit assembly, and when alternating current is conducted, the two coil assemblies are used for forming electromagnetic thrust along the first direction with the first magnet structure and forming electromagnetic thrust along the second direction with the second magnet structure;
the first magnetic attraction structure is arranged in the shell and interacts with the first magnet structure in an attraction manner to form magnetic restoring force along the first direction; the method comprises the steps of,
the second magnetic attraction structure is arranged in the shell and interacts with the second magnet structure to form magnetic restoring force along the second direction.
In the technical scheme of the invention, after the coils in the two coil assemblies are electrified, the coils respectively interact with the first magnet structures along the two sides of the third direction to form electromagnetic thrust along the first direction, the magnetic circuit assemblies are pulled back by the electromagnetic thrust on the two sides to move in the first direction, the first magnetic attraction structures and the first magnet structures are mutually attracted to form magnetic restoring force, when the magnetic circuit assemblies move in the first direction, the magnetic circuit assemblies are pulled back to form vibration in the first direction, the magnetic circuit assemblies are mutually attracted by the electromagnetic thrust on the two sides to move in the second direction, the second magnetic attraction structures and the second magnet structures are mutually attracted to form magnetic restoring force, so that when the magnetic circuit assemblies move in the second direction, the magnetic circuit assemblies are pulled back to form vibration in the second direction, and accordingly, double-frequency bidirectional vibration is completed through the principles of electromagnetic induction and the first magnet structures, the two coil assemblies provide two forces with the same size and the same direction, the independent elastic sheet is not required to be arranged, and the service life of the elastic sheet is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of an embodiment of a vibration device according to the present invention;
FIG. 2 is a schematic perspective view of the magnetic circuit assembly of FIG. 1;
FIG. 3 is a schematic perspective view of the coil assembly of FIG. 1;
FIG. 4 is an exploded perspective view of the coil assembly of FIG. 3;
FIG. 5 is a schematic illustration of the first magnet and first magnetic attraction member of FIG. 1 mated;
FIG. 6 is a schematic illustration of the second magnet and second magnetic attraction member of FIG. 1 mated;
FIG. 7 is a schematic diagram of the magnetic field direction and the current direction (angle) of FIG. 1;
fig. 8 is a schematic view of the magnetic field direction and the current direction (another angle) of fig. 1.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 100 | Vibration device | 31 | Coil |
| 1 | Shell body | 311 | First winding edge |
| 11 | End shell | 312 | Second winding edge |
| 12 | Shell body | 32 | Second mounting plate |
| 2 | Magnetic circuit assembly | 4 | First magnetic attraction structure |
| 21 | First magnet structure | 41 | First magnetic attraction piece |
| 211 | First magnet | 5 | Second magnetic attraction structure |
| 22 | Second magnet structure | 51 | Second magnetic attraction piece |
| 221 | Second magnet | 61 | First friction block |
| 23 | First mounting plate | 62 | Second friction block |
| 3 | Coil assembly |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the case where a directional instruction is involved in the embodiment of the present invention, the directional instruction is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional instruction is changed accordingly.
In addition, if there is a description of "first", "second", etc. in the embodiments 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 a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
Portable consumer electronics, such as cell phones, wearable devices, game consoles, etc., use vibration motors in large numbers as feedback for the system, and along with the development of miniaturization and light-weight of consumer electronics, various components inside the vibration motors need to be adjusted accordingly. The spring plate is used as a supporting element in the linear vibration motor to transmit the vibration of the mass body, and the manufacturing process, the strength and the service life of the spring plate seriously restrict the use of the linear vibrator. In order to avoid touching an upper shell and a lower shell in the operation process of a mechanical spring sheet in a conventional linear vibrator, an avoidance space for up-and-down vibration needs to be reserved on a mass block, so that the mass block has small mass and low performance; when the elastic sheet is welded by laser, the energy is easy to deform, the flatness is sensitive, the forming is difficult, and when the elastic sheet is not bent in place, the rear leg is easy to tilt, so that shell collision noise is caused. In addition, because the deformation makes the inside of shell fragment material tissue generate friction and generate heat, consequently can consume energy, can harm shell fragment life-span simultaneously, still can produce the noise. Meanwhile, the elastic sheet is a stress part, after the elastic sheet is subjected to alternating stress for a period of time, the elastic sheet can deform or even break, and the service life of the elastic sheet can directly influence the service life of the vibration motor.
In view of the above, the invention provides a vibration device, which generates non-contact bi-directional vibration restoring forces with different frequencies by utilizing the magnetic suspension principle, generates two motor thrust in mutually orthogonal directions by utilizing the electromagnetic induction principle, ensures continuous vibration of the vibration device in two directions, and effectively prolongs the service life of the vibration device. Fig. 1 to 8 are views showing an embodiment of a vibration device according to the present invention.
Referring to fig. 1, a vibration device 100 includes a housing 1, a magnetic circuit assembly 2, two coil assemblies 3, a first magnetic attraction structure 4 and a second magnetic attraction structure 5, wherein the housing 1 has a first direction, a second direction and a third direction which are intersected, the magnetic circuit assembly 2 is disposed in the housing 1, the magnetic circuit assembly 2 includes a first magnet structure 21 and a second magnet structure 22 which form a magnetic field distributed along the third direction, and the magnetic circuit assembly 2 can vibrate in the first direction and the second direction, respectively; the two coil assemblies 3 are fixedly arranged in the shell 1, the planes of the two coil assemblies 3 extend along a first direction and a second direction and are respectively arranged at two sides of the magnetic circuit assembly 2 along the third direction, each coil assembly 3 is positioned in a magnetic field generated by the magnetic circuit assembly 2, when alternating current is supplied, the two coil assemblies 3 are used for forming electromagnetic thrust along the first direction with the first magnet structure 21 and forming electromagnetic thrust along the second direction with the second magnet structure 22, and the first magnetic attraction structure 4 is arranged in the shell 1 and forms magnetic restoring force along the first direction through mutual attraction with the first magnet structure 21; the second magnetic attraction structure 5 is disposed in the housing 1, and interacts with the second magnet structure 22 to form a magnetic restoring force along the second direction.
In the technical scheme of the invention, after the coils in the two coil assemblies 3 are electrified, the coils respectively interact with the first magnet structures 21 along the two sides of the third direction to form electromagnetic thrust along the first direction, the magnetic circuit assemblies 2 are moved in the first direction by the electromagnetic thrust on the two sides, the first magnetic attraction structures 4 and the first magnet structures 21 are attracted mutually to form magnetic restoring force, so that when the magnetic circuit assemblies 2 move in the first direction, the magnetic circuit assemblies 2 are pulled back to form vibration in the first direction, the magnetic circuit assemblies 2 are attracted mutually by the electromagnetic thrust on the two sides to form magnetic restoring force in the second direction, and when the magnetic circuit assemblies 2 move in the second direction, the magnetic circuit assemblies 2 are pulled back to form vibration in the second direction, and double-frequency bidirectional vibration is completed by the principle of electromagnetic induction and magnetic levitation, so that the two coil assemblies 3 provide large and small forces in the same direction, and the two elastic sheets are not required to be arranged independently, and the service life of the device is prolonged.
Further, in order to ensure the stable relative movement recovery of the magnetic circuit assembly 2, in an embodiment, referring to fig. 2 to 3, the first magnetic attraction structure 4 includes at least two first magnetic attraction pieces 41, and the two first magnetic attraction pieces 41 are fixed in the housing 1 and are respectively located at two side orientations of the magnetic circuit assembly 2 along the third direction, so as to have magnetic recovery forces along the first direction on two sides of the magnetic circuit assembly 2 along the third direction; the two first magnetic attraction pieces 41 are magnetic conductive materials, in this embodiment, iron cores are used to generate magnetic attraction effects with the magnetic circuit assembly 2, in the vibration process, the first magnet structure 21 is simultaneously subjected to electromagnetic thrust after the coil assembly 3 is electrified, and the two magnetic attraction forces of the two first magnetic attraction pieces 41 on two sides, so that when the magnetic circuit assembly 2 generates displacement along the first direction under the action of electromagnetic force under the condition that no elastic piece is required to be arranged, the two first magnetic attraction pieces 41 on two sides simultaneously provide magnetic attraction forces, and thus the magnetic circuit assembly 2 is pulled back to form a restoring effect similar to the elastic piece.
In another embodiment, the second magnetic attraction structure 5 includes at least two second magnetic attraction pieces 51, and the two second magnetic attraction pieces 51 are fixed in the housing 1 and are respectively located at two side orientations of the magnetic circuit assembly 2 along the third direction so as to have magnetic restoring forces along the second direction on two sides of the magnetic circuit assembly 2 along the third direction; the two second magnetic attraction pieces 51 are magnetic conductive materials, in this embodiment, iron cores, so that magnetic attraction effects are respectively generated with the magnetic circuit assembly 2, in the vibration process, the second magnet structure 22 is simultaneously subjected to electromagnetic thrust after the coil assembly 3 is electrified and magnetic attraction forces which are mutually attracted with the two second magnetic attraction pieces 51 on two sides, so that when the magnetic circuit assembly 2 generates displacement along the second direction under the action of electromagnetic force under the condition that no elastic piece is required to be arranged, the two second magnetic attraction pieces 51 on two sides simultaneously provide magnetic attraction forces, and thus the magnetic circuit assembly 2 is pulled back to form a restoring effect similar to the elastic piece.
In this embodiment, the first magnetic attraction structure 4 includes at least two first magnetic attraction pieces 41, the second magnetic attraction structure 5 includes at least two second magnetic attraction pieces 51, and the two first magnetic attraction pieces 41 and the two second magnetic attraction pieces 51 are both fixed to the inner wall of the housing 1 and are respectively located at two side orientations of the magnetic circuit assembly 2 along the third direction, so as to respectively correspond to the magnetic attraction cooperation between the first magnetic structure 21 and the second magnetic structure 22, thereby generating a magnetic attraction force opposite to the movement direction of the magnetic circuit assembly 2, so as to perform resetting, so that when the magnetic circuit assembly 2 vibrates, an equilibrium restoring force can be received, and the position of the magnetic circuit assembly 2 in the third direction is ensured to a certain extent.
Further, each of the coil assemblies 3 includes at least one coil 31, and the coil 31 includes two first winding sides 311 disposed opposite to each other along the first direction, and two second winding sides 312 disposed opposite to each other along the second direction, wherein the two first winding sides 311 and the first magnet structure 21 form electromagnetic thrust along the first direction, and the two second winding sides 312 and the second magnet structure 22 form electromagnetic thrust along the second direction; the first magnetic attraction piece 41 and one of the first winding sides 311 of the coil 31, the first magnetic attraction piece 41, and the second magnetic attraction piece 51 that are located on the same side of the magnetic circuit assembly 2 are arranged along the first direction, and the second magnetic attraction piece 51 and one of the second winding sides 312 are distributed along the second direction. The current directions of the two first winding sides 311 are along the second direction and are orthogonal to the magnetic field direction of the first magnet 211 along the third direction, so that electromagnetic thrust along the first direction is formed by the corresponding first magnet 211, the current directions of the two second winding sides 312 are along the first direction and are orthogonal to the magnetic field direction of the second magnet 221 along the third direction, so that electromagnetic thrust along the second direction is formed by the corresponding second magnet 221, and the moving direction of the magnetic circuit assembly 2 can be changed by adjusting the current direction in the coil 31. And, arranging the first magnetic attraction pieces 41 and the second magnetic attraction pieces 51 in this way can maximally compress the volume in the space, so as to facilitate miniaturization design, and meanwhile, the adjacent first magnetic attraction pieces 41 and the adjacent first winding sides 311 correspond to the same magnet, and the adjacent second magnetic attraction pieces 41 and the adjacent second winding sides 311 correspond to the same magnet.
Based on the above embodiment, the power that can be achieved by the vibration device 100 is affected by the number of magnets, so, in order to meet the requirement of use, referring to fig. 4, the magnetic circuit assembly 2 further includes a first mounting plate 23, two sides of the first mounting plate 23 in the third direction are provided with the first magnet structure 21 and the second magnet structure 22, each of the first magnet structures 21 includes a plurality of first magnets 211 arranged along the first direction, and each of the second magnet structures 22 includes a plurality of second magnets 221 arranged along the second direction; a plurality of first magnetic attraction pieces 41 are provided corresponding to the plurality of first magnets 211 on both sides of the magnetic circuit assembly 2 in the third direction, and a plurality of second magnetic attraction pieces 51 are provided corresponding to the plurality of second magnets 221. The plurality of first magnetic attraction pieces 41 and the plurality of first magnets 211 are arranged along the first direction, the plurality of second magnets 221 and the plurality of second magnetic attraction pieces 51 are arranged along the second direction, in this embodiment, 3 first magnets 211 are arranged on two sides of the first mounting plate 23 along the third direction, the magnetic poles of the three first magnets 211 on each side are distributed along the third direction, correspondingly, the first magnetic attraction pieces 41 on two sides of the magnetic circuit assembly 2 are correspondingly arranged, three first magnetic attraction pieces 41 are arranged on each side, the plurality of second magnets 221 are arranged along the second direction at intervals, in a stable state, the first magnets 211 and the corresponding first magnetic attraction pieces 41 are guaranteed to be mutually close to each other along the first direction, the second magnets 221 and the corresponding second magnetic attraction pieces 51 are mutually close along the second direction, so that the magnetic circuit assembly is prevented from being influenced by the magnetic attraction distance of one side in a large range, and the magnetic circuit assembly is prevented from being influenced by the magnetic attraction distance of one side.
The dimensions of each magnetic attraction piece and each magnet may be the same or different, for example, the polarities of the second magnets 221 may be distributed along the third direction, but the widths of the second magnets in the first direction may be larger, and in this case, in order to avoid interference, the widths of the second magnetic attraction pieces 51 in the first direction may be designed to be smaller, and in the magnetic attraction, the two second magnetic attraction pieces 51 are magnetically attracted to each other corresponding to the same second magnet 221.
Further, each of the coil assemblies 3 includes at least one coil 31, where the coil 31 includes two second winding sides 312 opposite to each other along the second direction, and two of the second magnetic attraction pieces 51 are disposed between the two second winding sides 312 at intervals along the second direction and are disposed corresponding to the two second winding sides 312, and since the second magnetic attraction pieces 51 are corresponding to the second magnets 221, two of the second magnets 221 are disposed corresponding to the two second winding sides 312. In this embodiment, two second magnetic attraction pieces 51 are attached to two second winding sides 312, so as to achieve a minimum volume in terms of space layout, and it should be noted that the remaining second magnetic attraction pieces 51 are located on the same line with the second magnetic attraction pieces 51 located in the coil 31.
Furthermore, each of the coil assemblies 3 includes two coils 31, each of the coils 31 including two first winding sides 311 opposing in the first direction; one of the first magnetic attraction pieces 41 is located between the two coils 31 and corresponds to two first winding sides 311 which are close to each other in the two coils 31, so that the minimum volume is achieved in space layout, and one of the first magnetic attraction pieces 41 is located between two first winding sides 311 which are close to each other in the two coils 31 because the first magnetic attraction piece 41 corresponds to the first magnet 211.
Further, referring to fig. 5, the first magnets 211 and the first magnetic attraction members 41 located on two sides of the magnetic circuit assembly 2 in the third direction are disposed in a one-to-one correspondence, so that the corresponding center lines are distributed on the same straight line. At this time, the matching effect between the first magnet 211 and the corresponding first magnetic attraction piece 41 is best, and the electromagnetic thrust and the magnetic restoring force of the first magnet structure 21 on two sides of the third direction are symmetrically set, so that the first magnet structure 21 can be uniformly stressed in the process of vibrating in two directions.
In another embodiment, referring to fig. 6, the second magnets 221 and the second magnetic attraction members 51 located on two sides of the magnetic circuit assembly 2 in the third direction are disposed in a one-to-one correspondence manner, so that the corresponding center lines are distributed on the same straight line. At this time, the second magnet 221 and the corresponding second magnetic attraction member 51 have the best matching effect, and the electromagnetic thrust and the magnetic restoring force of the second magnet structure 22 on two sides of the third direction are symmetrically arranged, so that the second magnet structure 22 can be uniformly stressed in the process of vibrating in two directions.
In order to reasonably design the arrangement of the components in the housing 1, which are matched with the magnetic circuit assembly 2, in an embodiment of the present invention, the coil assembly 3 is located at one side of the magnetic circuit assembly 2 along the third direction, and is arranged with the first magnetic attraction member 41 and the second magnetic attraction member 51 along the first direction. Thereby arranging the corresponding first magnetic attraction piece 41, second magnetic attraction piece 51 and coil 31 on the same plane, and compressing the space size to the minimum, so as to facilitate the miniaturization design.
Based on the above embodiment, the first magnetic attraction pieces 41 and the second magnetic attraction pieces 51 may be disposed on the inner side of the coil 31 during the process of being matched with the coil 31, at this time, the second magnetic attraction pieces 51 are disposed on the outer side of the coil 31, or the first magnetic attraction pieces 41 are disposed on the outer side of the coil 31, at this time, the second magnetic attraction pieces 51 are disposed on the inner side of the coil 31, or only part of the first magnetic attraction pieces 41 and/or only part of the second magnetic attraction pieces 51 are disposed on the inner side of the coil 31, and the rest of the magnetic attraction pieces are correspondingly distributed on the outer side of the coil 31.
Further, the coil assembly 3 further includes a second mounting plate 32 and at least one coil 31, and the coil 31 is disposed on a side of the second mounting plate 32 facing the magnetic circuit assembly 2; one of the first magnetic attraction pieces 41 and one of the second magnetic attraction pieces 51 are arranged on the side, facing the magnetic circuit assembly 2, of the second mounting plate 32, the first magnetic attraction pieces 41 and the coil 31 are arranged along the first direction, and the second magnetic attraction pieces 51 and the coil 31 are arranged along the second direction. Therefore, the coil 31, the corresponding first magnetic attraction piece 41 and the corresponding second magnetic attraction piece 51 are integrated on the second mounting plate 32 to form a modularized design, and the integrated magnetic attraction piece can be integrally mounted on the corresponding wall surface in the shell 1 after being assembled, so that the combined mounting is facilitated.
Further, in an embodiment of the present invention, two coil assemblies 3 are provided, and the two coil assemblies 3 are respectively disposed on two sides of the magnetic circuit assembly 2 along the third direction. So as to co-act with the centrally located magnetic circuit assembly 2, the direction of the current flow of the coils 31 in both coil assemblies 3 should be ensured to produce a driving force in the same direction as the corresponding magnetic circuit assembly 2, without further limitation.
Further, in the process that the magnetic circuit assembly 2 is reversely moved by the magnetic restoring force, there may be a difference between the forces along the two sides of the third direction, at this time, the magnetic circuit assembly 2 may deflect to be attached to the corresponding magnetic attraction piece on one side, so as to affect the operation of the magnetic circuit assembly 2 for continuing to vibrate, in an embodiment, the first magnetic attraction structure 4 is spaced from the first magnet structure 21 by a limiting structure, so that a first gap along the third direction is formed between the first magnetic attraction structure 4 and the first magnet structure 21, so as to avoid the direct attachment of the magnetic circuit assembly 2 by the magnetic attraction force,
in another embodiment, the second magnetic structure 5 is spaced from the second magnet structure 22 by a limiting structure, so that a second gap along the third direction is formed between the second magnetic structure 5 and the second magnet structure 22, thereby avoiding the magnetic circuit assembly 2 from being directly attached by magnetic attraction.
In order to ensure that the magnetic circuit assembly 2 does not adhere to the corresponding magnetic attraction structure in any case, it should be ensured that a first gap and a second gap in the third direction are formed between the magnetic circuit assembly 2 and the first and second magnetic attraction structures 4 and 5 at the same time.
The invention is not limited to the forming mode of the first gap and the second gap, a whole limiting block can be arranged, one side of the limiting block is abutted against the inner wall of the shell 1, the other side of the limiting block can be abutted against the first mounting plate 23 in the magnetic circuit assembly 2 when the magnetic circuit assembly 2 deflects, in the embodiment, the coil assembly 3 comprises a second mounting plate 32, and the magnetic circuit assembly 2 also comprises the first mounting plate 23; the limiting structure comprises a first friction block 61 and a second friction block 62 which are arranged along the third direction, the first friction block 61 and the second friction block 62 are respectively arranged on opposite sides of the second mounting plate 32 and the first mounting plate 23, and the first friction block 61 and the second friction block 62 are propped against each other, so that a first gap and a second gap are respectively formed between the magnetic circuit assembly 2 and the first magnetic attraction structure 4 and between the magnetic circuit assembly 2 and the second magnetic attraction structure 5, namely, the first friction block 61 and the second friction block 62 are mutually rubbed, and damage caused by direct friction of corresponding magnets and magnetic attraction pieces or coils 31 is prevented.
In this structure, the first friction block 61 and the second friction block 62 may be assembled with the second mounting plate 32 and the first mounting plate 23, respectively, so that after the first friction block 61 and the second friction block 62 are assembled in the housing 1, the first friction block 61 and the second friction block 62 may have a corresponding relationship, and when the first friction block 61 and the second friction block 62 abut against each other, the total thickness in the third direction is greater than the maximum thickness in the projection of the first magnet 211, the second magnet 221, the coil 31, the first magnetic attraction member 41, and the second magnetic attraction member 51, and in this embodiment, the thickness in the third direction of the first friction block 61 is greater than the thicknesses of the coil 31, the first magnetic attraction member 41, and the second magnetic attraction member 51, and the thickness of the second friction block 62 is greater than the thicknesses of the first magnet structure 21 and the second magnet structure 22. When the magnetic circuit assembly 2 is deviated, the first friction block 61 and the second friction block 62 can be guaranteed to be in contact preferentially, the magnetic circuit assembly 2 is driven in the state, friction is generated between the first friction block 61 and the second friction block 62, the corresponding magnet structure and the magnet attraction piece are protected to the greatest extent, the service life of the whole device is prolonged, and meanwhile the magnet structure and the magnet attraction piece caused by improper operation in the installation process can be prevented from being attached in an adsorption mode.
The first friction block 61 and the second friction block 62 are made of a non-magnetic conductive material having a low friction coefficient, in this embodiment, polytetrafluoroethylene. Polytetrafluoroethylene has excellent chemical stability and high temperature resistance, and has extremely low friction coefficient, thereby meeting the design requirement.
Based on the above embodiment, the two limiting structures are disposed along the first direction, that is, the two first friction blocks 61 are located at two ends of the corresponding second mounting plate 32 along the first direction, and the two second friction blocks 62 are located at two ends of the corresponding side surface of the first mounting plate 23 along the first direction.
Further, for easy installation, in this embodiment, the housing 1 includes an end shell 11 and a shell body 12 disposed along the second direction, the shell body 12 has an installation cavity with an open end, and the end shell 11 covers the installation cavity; wherein, the magnetic circuit assembly 2 and the two coil assemblies 3 are arranged in the mounting cavity, so that the vibration device 100 is arranged in a sealing way.
In this embodiment, referring to fig. 1 and 7 to 8, the specific arrangement modes of the coil 31, the first magnetic attraction member 41, the second magnetic attraction member 51, the magnetic circuit assembly 2 and other components in this embodiment are as follows:
the housing 1 comprises an end shell 11 and a housing body 12, two coil assemblies 3 are respectively arranged at two sides of the magnetic circuit assembly 2 along the third direction, one second mounting plate 32 is arranged in each coil assembly 3 and fixed on one side wall of the housing body 12, two coils 31 are arranged on the second mounting plate 32, the current directions on the two coils 31 are opposite, each coil 31 is a frame-shaped coil and has four winding edges, the first magnetic attraction structure 4 comprises three first magnetic attraction pieces 41, the second magnetic attraction structure 5 comprises eight second magnetic attraction pieces 51, three first magnetic attraction pieces 41 which are respectively arranged on the second mounting plates 32 of each coil assembly 3 at intervals along the first direction and extend along the second direction are respectively arranged on the second mounting plates 32, the first magnetic attraction piece 41 positioned in the middle is positioned between the two coils 31, the remaining two first magnetic attraction pieces 41 are distributed on two sides of the two coils 31, the two first magnetic attraction pieces 41 close to the two coils 31 are attached to the outer sides of the first winding sides 311 of the coils 31 extending along the second direction, the second magnetic attraction pieces 51 are further distributed on the second mounting plates 32, the eight second magnetic attraction pieces 51 are arranged in two rows at intervals along the second direction, four second magnetic attraction pieces 51 are arranged on each row, the inner wall surfaces of the two second winding sides 312 opposite to each other along the second direction of the coils 31 are attached to the two second magnetic attraction pieces 51 respectively, two first friction blocks 61 are further arranged at two ends of the second mounting plates 32 along the first direction, two ends of each first friction block 61 along the second direction are attached to the two second magnetic attraction pieces 51 respectively, and the limiting structure is that, the coil assembly 3, the first magnetic attraction piece 41 and the second magnetic attraction piece 51 are integrated to form two stator structures spaced along the third direction, the magnetic circuit assembly 2 is located between the two stator structures, two sides of the first mounting plate 23 of the magnetic circuit assembly 2 are correspondingly provided with the first magnet 211 and the second magnet 221, and the first magnet 211 and the second magnet 221 are correspondingly arranged on the first magnetic attraction piece 41 and the second magnetic attraction piece 51. Specifically, three first magnets 211 are disposed on a single side of the first mounting plate 23, the polarities of the first magnets 211 located in the middle are opposite to those of the two first magnets 211 located on two sides, each first magnet 211 corresponds to a first winding side 311 extending along the second direction in the two coils 31 on the second mounting plate 32, four second magnets 221 are disposed on a single side of the first mounting plate 23, four second magnets 221 correspond to two rows spaced along the second direction, two second magnets 221 adjacent to each other along the second direction are arranged along the first direction, the polarities of the two second magnets 221 adjacent to each other along the second direction are opposite, the polarities of the two second magnets 221 on the same row are opposite, and correspond to four second magnetic attraction pieces 51 located on the same row on the second mounting plate 32, and simultaneously, two second magnets 221 on the same row correspond to two coils 31 on the second mounting plate 32 and extend along the second direction and the second winding side 312 opposite to each other along the first direction.
The invention also provides an intelligent terminal comprising the vibration device 100, wherein the intelligent terminal comprises all the technical characteristics of the vibration device 100, so that the intelligent terminal also has the technical effects brought by all the technical characteristics, and the technical effects are not repeated here.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (11)
1. A vibration device, comprising:
a housing having intersecting first, second and third directions;
a magnetic circuit assembly disposed within the housing, the magnetic circuit assembly including a first magnet structure and a second magnet structure formed with magnetic fields distributed along the third direction, the magnetic circuit assembly being vibratable in the first direction and the second direction, respectively;
the two coil assemblies are fixedly arranged in the shell, the planes of the two coil assemblies extend along a first direction and a second direction and are respectively arranged on two sides of the magnetic circuit assembly along the third direction, each coil assembly is positioned in a magnetic field generated by the magnetic circuit assembly, and when alternating current is conducted, the two coil assemblies are used for forming electromagnetic thrust along the first direction with the first magnet structure and forming electromagnetic thrust along the second direction with the second magnet structure;
the first magnetic attraction structure is arranged in the shell and interacts with the first magnet structure in an attraction manner to form magnetic restoring force along the first direction; the method comprises the steps of,
the second magnetic attraction structure is arranged in the shell and interacts with the second magnet structure to form magnetic restoring force along the second direction.
2. The vibration apparatus of claim 1, wherein the first magnetic structure includes at least two first magnetic pieces, each of the two first magnetic pieces being fixed to the housing and being positioned at both side orientations of the magnetic circuit assembly in the third direction so as to have magnetic restoring forces in the first direction at both sides of the magnetic circuit assembly in the third direction; and/or the number of the groups of groups,
the second magnetic attraction structure comprises at least two second magnetic attraction pieces, the two second magnetic attraction pieces are fixed in the shell, and the second magnetic attraction pieces are respectively arranged at the two sides of the magnetic circuit assembly along the third direction, so that the magnetic circuit assembly along the two sides of the magnetic circuit assembly along the third direction are provided with magnetic restoring force along the second direction.
3. The vibration apparatus of claim 2, wherein each of said coil assemblies includes at least one coil including two first winding sides disposed opposite in said first direction and two second winding sides disposed opposite in said second direction, both of said first winding sides forming an electromagnetic thrust with said first magnet structure in said first direction and both of said second winding sides forming an electromagnetic thrust with said second magnet structure in said second direction;
the first magnetic attraction pieces are arranged along the first direction along one of the first windings, and the second magnetic attraction pieces are distributed along the second direction along one of the second windings.
4. The vibration apparatus of claim 2, wherein the magnetic circuit assembly further comprises a first mounting plate provided with the first magnet structure and second magnet structures on both sides of the first mounting plate in the third direction, each of the first magnet structures including a plurality of first magnets arranged in the first direction, each of the second magnet structures including a plurality of second magnets arranged in the second direction;
the magnetic circuit assembly is provided with a plurality of first magnetic attraction pieces corresponding to the plurality of first magnets on two sides of the third direction, and a plurality of second magnetic attraction pieces corresponding to the plurality of second magnets.
5. The vibratory device of claim 4 wherein each of said coil assemblies includes at least one coil including two second winding sides opposite in a second direction;
the two second magnetic attraction pieces are arranged between the two second winding sides at intervals along the second direction and are respectively arranged corresponding to the two second winding sides;
wherein two second magnets are arranged corresponding to two second winding sides.
6. The vibratory device of claim 4 wherein each of said coil assemblies includes two coils, each of said coils including two first winding sides opposite in a first direction;
one of the first magnetic attraction pieces is positioned between the two coils and corresponds to two first winding edges which are close to each other in the two coils;
wherein one of the first magnets is located between two of the first winding sides of the two coils that are adjacent to each other.
7. The vibration apparatus of claim 2, wherein each of the coil assemblies further comprises a second mounting plate, and a coil provided on a side of the second mounting plate facing the magnetic circuit assembly;
the first magnetic attraction structure and the second magnetic attraction structure are arranged on one side of the second mounting plate towards the magnetic circuit assembly, the first magnetic attraction piece and the coil are arranged along the first direction, and the second magnetic attraction piece and the coil are arranged along the second direction.
8. The vibration apparatus of claim 1, wherein the first magnetically attractable structure is spaced from the first magnet structure by a spacing structure such that a first gap is formed between the first magnetically attractable structure and the first magnet structure along the third direction; and/or the number of the groups of groups,
the second magnetic structure is spaced from the second magnet structure by a spacing structure, so that a second gap along the third direction is formed between the second magnetic structure and the second magnet structure.
9. The vibratory device of claim 8 wherein said coil assembly includes a second mounting plate and said magnetic circuit assembly further includes a first mounting plate;
the limiting structure comprises a first friction block and a second friction block which are distributed along the third direction, the first friction block and the second friction block are respectively arranged on the opposite side surfaces of the second mounting plate and the first mounting plate, and the first friction block is propped against the second friction block to form a first gap and a second gap.
10. The vibration apparatus of claim 1, wherein the housing includes an end shell and a shell body disposed in the second direction, the shell body having a mounting cavity open at one end, the end shell covering the mounting cavity;
the magnetic circuit assembly, the coil assembly, the first magnetic attraction structure and the second magnetic attraction structure are all arranged in the installation cavity.
11. An intelligent terminal comprising a vibration device according to any one of claims 1 to 10.
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| CN202111515168.2A CN114172340B (en) | 2021-12-10 | 2021-12-10 | Vibrating device and intelligent terminal |
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| CN202111515168.2A CN114172340B (en) | 2021-12-10 | 2021-12-10 | Vibrating device and intelligent terminal |
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| CN114172340A (en) | 2022-03-11 |
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