CN113991963B - Linear motor and electronic apparatus - Google Patents
Linear motor and electronic apparatus Download PDFInfo
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- CN113991963B CN113991963B CN202111359132.XA CN202111359132A CN113991963B CN 113991963 B CN113991963 B CN 113991963B CN 202111359132 A CN202111359132 A CN 202111359132A CN 113991963 B CN113991963 B CN 113991963B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
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- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention discloses a linear motor and electronic equipment. According to the technical scheme, the two magnetic circuit assemblies are arranged, each magnetic circuit assembly comprises a magnetic yoke and a magnet fixed on the magnetic yoke, the magnetic yokes of the two magnetic circuit assemblies are attached and fixed, the magnets are limited through the magnetic yokes, and parts in the vibrator assemblies are installed in the shell through the magnetic yokes, so that the complexity of installing the parts one by one is reduced, and the installation difficulty is reduced; and the magnet yoke is used for limiting the vibrator assembly so as to improve the utilization rate of a magnetic field and the strength of the linear motor.
Description
Technical Field
The invention relates to the technical field of transmission devices, in particular to a linear motor and electronic equipment.
Background
At present, vibration motors are installed on electronic products such as mobile phones and flat panels to perform tactile feedback. While within the scope of haptic feedback technology, the use of predominantly linear motors is widespread. The existing linear motor adopts a magnetic structure, so that the utilization rate of a magnetic field is high.
The linear motor with the magnetic structure is provided with two groups of magnets, a balancing weight, a magnetic conduction plate and other assemblies, so that the linear motor can vibrate towards two directions at the same time, the vibration range is wide, and the linear motor is further widely applied to electronic equipment. However, the existing linear motors have many parts, especially two groups of magnets, weight-balancing blocks, magnetic conductive plates and other parts, and are mostly assembled one by one, which causes assembly difficulty and increases process difficulty.
Disclosure of Invention
The invention mainly aims to provide a linear motor, aiming at arranging a magnetic yoke to connect a plurality of accessories together and reduce the assembly difficulty.
To achieve the above object, the present invention provides a linear motor including:
a housing;
a stator assembly mounted to the housing; and
the vibrator assembly comprises two magnetic circuit assemblies, each magnetic circuit assembly comprises a magnetic yoke and a magnet fixed on the magnetic yoke, and the magnetic yokes of the two magnetic circuit assemblies are attached and fixed.
Optionally, the vibrator assembly further includes a magnetic conductive plate fixed to an end of the magnet away from the magnetic yoke.
Optionally, the stator assembly includes a bracket and a coil, the bracket is mounted to the housing, and the coil is wound on the bracket.
Optionally, the magnetic yoke includes a bottom and a side wall, the bottom and the side wall enclose a receiving groove, and the magnet is received in the receiving groove.
Optionally, the support is provided with a through hole, the vibrator assembly further comprises a balancing weight and an elastic element, the magnetic conduction plate penetrates through the through hole and is connected with the balancing weight, and the elastic element is respectively connected with the shell and the balancing weight.
Optionally, the side wall is provided with an avoiding notch, the avoiding notch is communicated with the accommodating groove, the support comprises a wing part and a positioning part, the wing part is fixedly connected with the positioning part, the positioning part is inserted into the accommodating groove, the avoiding notch and the wing part are oppositely arranged to avoid the wing part, and the wing part is fixed on the shell.
Optionally, the outer shell includes a middle shell, an upper shell and a bottom shell, the middle shell is connected to the upper shell and the bottom shell, the middle shell is provided with a positioning notch, and the wing portion is installed in the positioning notch in a limiting manner and used for limiting the support.
Optionally, the upper shell and/or the bottom shell are convexly provided with a clamping portion, the clamping portion is convexly arranged on the edge of the upper shell or the edge of the bottom shell, and the clamping portion abuts against the wall surface of the middle shell to limit the middle shell.
Optionally, the positioning portion is a copper ring, the coil is wound around the copper ring, and the copper ring and the coil are located between the magnet and the side wall.
An electronic device includes a linear motor.
The linear motor comprises a stator assembly and a vibrator assembly, wherein the vibrator assembly comprises two magnetic circuit assemblies, each magnetic circuit assembly comprises a magnetic yoke and a magnet fixed on the magnetic yoke, and the magnetic yokes of the two magnetic circuit assemblies are attached and fixed. According to the technical scheme, the two magnetic circuit assemblies are arranged, each magnetic circuit assembly comprises a magnetic yoke and a magnet fixed on the magnetic yoke, the magnetic yokes of the two magnetic circuit assemblies are attached and fixed, the magnets are limited through the magnetic yokes, and parts in the vibrator assembly are installed in the shell through the magnetic yokes, so that the complexity of installing the parts one by one is reduced, and the installation difficulty is reduced; and the magnet yoke is used for limiting the vibrator assembly so as to improve the utilization rate of a magnetic field and the strength of the linear motor.
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 structural diagram of a linear motor according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of one embodiment of a linear motor of the present invention;
FIG. 3 is a cross-sectional view of one embodiment of the coil, magnet and magnetically permeable plate of the present invention mounted to a magnetic yoke;
FIG. 4 is a schematic view of an embodiment of the bracket of the present invention without the bracket mounted to the yoke;
fig. 5 is a schematic structural view of an embodiment of the bracket of the present invention mounted to a yoke.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
20 | |
| 10 | |
200 | |
| 11 | |
21 | Magnetic yoke |
| 111 | |
211 | First magnetic yoke |
| 110 | |
212 | Second |
| 112 | |
213 | |
| 1120 | Clamping |
214 | Accommodating |
| 113 | |
215 | Avoid the |
| 12 | |
216 | |
| 120 | Limiting |
22 | |
| 13 | |
23 | Magnetic |
| 132 | Through- |
24 | |
| 1311 | Wing |
25 | |
| 1312 | Positioning |
30 | Circuit board |
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely 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 obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that all directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are 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. Additionally, the meaning of "and/or" appearing throughout is to include three juxtaposed aspects, taken "and/or by way of example," including aspects, or aspects and aspects simultaneously satisfied. 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 present invention proposes a linear motor 100. Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a linear motor 100 according to an embodiment of the present invention; FIG. 2 is a cross-sectional view of one embodiment of the linear motor 100 of the present invention; fig. 3 is a cross-sectional view of one embodiment of the present invention in which coil 12, magnet 22 and magnetically permeable plate 23 are mounted to yoke 21; FIG. 4 is a schematic view of an embodiment of the bracket 13 of the present invention not mounted to the yoke 21; fig. 5 is a schematic structural view of an embodiment of the bracket 13 mounted to the yoke 21 according to the present invention.
In an embodiment of the present invention, as shown in fig. 1 and 2, a linear motor 100 according to the present invention includes:
a housing 10;
a stator assembly 10, the stator assembly 10 being mounted on the housing 11; and
the vibrator assembly 20 comprises two magnetic circuit assemblies 200, each magnetic circuit assembly 200 comprises a magnetic yoke 21 and a magnet 22 fixed on the magnetic yoke 21, and the magnetic yokes 21 of the two magnetic circuit assemblies 200 are attached and fixed.
The technical scheme of the invention is provided with two magnetic circuit assemblies 200, each magnetic circuit assembly 200 comprises a magnetic yoke 21 and a magnet 22 fixed on the magnetic yoke 21, the magnetic yokes 21 of the two magnetic circuit assemblies 200 are jointed and fixed, the magnet 22 is limited by the magnetic yoke 21, and parts in the vibrator assembly 20 are installed in the shell 11 by the magnetic yoke 21, so that the complexity of installing the parts one by one is reduced, and the installation difficulty is reduced; and the parts in the vibrator assembly 20 are limited by the yoke 21, so that the magnetic field utilization rate is higher and the strength of the linear motor 100 is improved.
Optionally, the vibrator assembly further comprises a magnetic conductive plate 23, and the magnetic conductive plate 23 is fixed to an end of the magnet 22 far away from the magnetic yoke 21.
It can be understood that, in the technical solution of the present invention, the magnet 22 and the magnetic conductive plate 23 are mounted on the magnetic yoke 21, and then the magnet 22 and the magnetic conductive plate 23 are mounted in the housing 11 through the magnetic yoke 21, so as to reduce the complexity of mounting the magnet 22 and the magnetic conductive plate 23 one by one, and the magnetic yoke 21 is used to limit the magnet 22 and the magnetic conductive plate 23, so as to improve the magnetic field utilization rate and the strength of the linear motor 100.
The linear motor 100 of the present invention is a linear motor 100 of a counter magnet structure. The vibrator assembly 20 includes two sets of elastic elements 25, a magnet 22, a magnetic conductive plate 23, a weight 24, and a yoke 21, which are vertically symmetrical.
It will be appreciated that the magnetic conductive plate 23 primarily functions as a magnetic conductor. Because the magnet 22 is located below the magnetic conductive plate 23, the magnetic conductive plate 23 can concentrate the magnetic field lines more effectively, so that more magnetic field lines are distributed along the set direction, thereby improving the magnetic field strength of the magnet 22.
As shown in fig. 2, in order to mount the coil 12, the stator assembly 10 includes a bracket 13, the stator assembly 10 includes the coil 12, the bracket 13 is mounted to the housing 13, and the coil 12 is wound on the bracket 13.
In one embodiment of the present invention, the coil 12 is wound around the outer wall of the support 13. Since the coil 12 mounted on the bracket 13 is fixed, it is not easily affected by the vibration of the vibrator assembly 20 to vibrate and skew, so as to avoid the problems of unstable mounting of the stator assembly 10 of the linear motor 100 and low vibration strength of the vibrator assembly 20. In order to fix the coil 12 inside the housing 11, the coil 12 is mounted to the bracket 13, and the coil 12 is spaced apart from the magnet 22.
In one embodiment of the invention, the coil 12 is mounted below the support 13. After the brackets 13 are fixed by the housing 11, the coil 12 is confined between the yoke 21 and the brackets 13. Since the coil 12 is held between the yoke 21 and the bracket 13, the coil 12 has an effect of adjusting the mounting height of the bracket 13. For this, as shown in fig. 3, a limit notch 120 is provided at the bottom edge of the coil 12 to adjust the height of the bracket 13 by providing the limit notch 120, thereby adjusting the response time of the linear motor 100.
In one embodiment of the present invention, the coil 12 is a voice coil. The coil 12 has a larger diameter than the magnet 22 and the magnetically permeable plate 23. The magnet 22 and the magnetic conduction plate 23 are not contacted with the bracket 13, so that the contact of the bracket 13 by the magnet 22 and the magnetic conduction plate 23 is reduced, and further, the collision and the collision of the magnet 22 and the magnetic conduction plate 23 to the coil 12 are reduced, so that the stability of the coil 12 mounted on the bracket 13 is improved.
It can be understood that the coil 12 is wound on the outer wall of the bracket 13, and the coil 12 is positioned on the yoke 21, so that the height of the bracket 13 is increased, the response time of the linear motor 100 is improved, the operation is simple, and the efficiency is higher.
In order to facilitate mounting of the magnet 22 and the magnetic conductive plate 23, the yoke 21 includes a bottom 213 and a side wall 216, the bottom 213 and the side wall 216 define a receiving groove 215, and the magnet 22 and the magnetic conductive plate 23 are received in the receiving groove 215.
In an embodiment of the present invention, the yoke 21 is a semi-closed structure, and the magnet 22 and the magnetic conductive plate 23 are disposed in the receiving groove 215. The magnet 22, the magnetic conductive plate 23 and the magnetic yoke 21 form a magnetic circuit system, and the bracket 13 surrounds the magnetic circuit system, so that the coil 12 is arranged on the periphery of the magnetic circuit system. Wherein, the magnetic yoke 21 is a magnetic yoke, and the magnetic yoke 21 only plays a role of magnetic line transmission in a magnetic circuit system. The magnetic yoke 21 is mainly made of soft magnetic materials with high magnetic permeability. In addition, the whole magnet yoke 21 is of a bowl-shaped structure, and the magnet yoke 21 is a bowl yoke. The yoke 21 may be disposed in a three-dimensional shape or a cylindrical shape, but the present application is not limited thereto, and the specific shape thereof may be set according to the shape of the housing 11.
In the present invention, in order to drive the vibrator assembly 20 to vibrate, the bracket 13 is provided with a through hole 132, the vibrator assembly 20 further includes a weight block 24 and an elastic element 25, the magnetic conduction plate 23 penetrates through the through hole 132 and is connected with the weight block 24, and the elastic element 25 is respectively connected with the housing 11 and the weight block 24.
The specific installation direction of the linear motor 100 of the present invention to the electronic product can be set according to actual requirements, and the linear motor 100 is generally installed in the electronic product longitudinally, and the weight block 24 in the linear motor 100 vibrates up and down. In an embodiment of the present invention, after the linear motor 100 is assembled as shown in fig. 1, the weight 24 is vibrated back and forth by the magnetic force, so that the elastic element 25 vibrates up and down, thereby generating a vibration force, as shown in fig. 1.
In addition, the elastic element 25 is a spring. The spring plate is connected with the balancing weight block 24 to form a moving assembly. The spring element 25 may also be configured as a spring, without the shape of the spring element 25 being limited. The connection mode of the elastic element 25 and the weight block 24 may be a rivet connection, and the connection mode of the elastic element 25 and the weight block 24 is not limited herein, and the material of the elastic element 25 and the weight block 24 is not limited.
When the weight 24 vibrates, the weight 24 mainly exerts a pressing force and a vibration force on the yoke 21. The weight block 24 presses down the acting force to limit the magnetic yoke 21 and the magnet 22 and the magnetic conductive plate 23 in the magnetic yoke 21, and the magnet 22 and the magnetic conductive plate 23 on the magnetic yoke 21 can be assembled on the magnetic yoke 21 without structures such as a support column.
The vibration force of the weight block 24 is easy to shake the magnetic yoke 21 and the magnet 22 and the magnetic conductive plate 23 in the magnetic yoke 21, and in order to reduce the shake, the bracket 13 is arranged to limit the coil 12. The bracket 13 is fixed inside the housing 11, and the through hole 132 in the middle of the bracket 13 is a space for the magnet 22 and the magnetic conductive plate 23 to vibrate and shake. Since the bracket 13 is fixed to the case 11, so that the coil 12 is less shaken by the yoke 21, the coil 12 is stably fixed.
In order to facilitate assembly, the side wall of the yoke 21 is provided with an avoiding gap 215, the avoiding gap 215 is communicated with the receiving groove 215, the bracket 13 comprises a wing portion 1311 and a positioning portion 1312, the wing portion 1311 is fixedly connected with the positioning portion 1312, the positioning portion 1312 is inserted into the receiving groove 215, the wing portion 1311 is inserted into the avoiding gap 215, the avoiding gap 215 is opposite to the wing portion 1311 to avoid the wing portion 1311, and the wing portion 1311 is fixed to the housing 11.
It can be understood that the wing portions 1311 and the avoidance gaps 215 have a matching effect, the number of the avoidance gaps 215 is the same as that of the wing portions 1311, and the wing portions 1311 are inserted into the avoidance gaps 215 to achieve the positioning effect of the wing portions 1311 and the avoidance gaps 215. According to the invention, the wing part 1311 and the avoiding notch 215 are matched, so that the bracket 13 and the magnetic yoke 21 can be conveniently and directly assembled. The positioning portion 1312 may be provided in a three-dimensional shape or a cylindrical shape, but the present invention is not limited thereto, and the specific shape may be set according to the shape of the yoke 21.
Further, the diameter of the coil 12 and the structure of the coil 12 can determine the mounting height of the bracket 13. When the coil 12 has a small diameter, the coil 12 is wound around the bracket 13, and the coil 12 is accommodated in the yoke 21, the wing portion 1311 of the bracket 13 abuts against the escape notch 215, the distance between the bracket 13 and the yoke 21 is relatively short, and the response time of the linear motor 100 is prolonged; when the coil 12 has a larger diameter, the coil 12 is wound on the bracket 13, and the coil 12 is fixed above the yoke 21, the wing portion 1311 is higher than the avoiding notch 215, so that the distance between the bracket 13 and the yoke 21 is longer, and the response time of the linear motor 100 is shortened.
In order to fix the bracket 13 inside the housing 11 to fix the coil 12, the housing 11 includes a middle shell 111, the middle shell 111 is provided with a positioning notch 1110, and the wing part 1311 is disposed in the positioning notch 1110 for limiting the bracket 13. The bracket 13 is not easy to vibrate and deflect at the positioning notch 1110.
In order to further miniaturize the linear motor 100 of the present invention, the coil 12 of the present invention is mainly fixed by the bracket 13, and the bracket 13 is fixed to the housing 11 by the wing 1311, so that there is no need to add other parts and components, the internal structure of the linear motor 100 is more compact, and the assembly is simple and fast.
In order to facilitate the disassembly of the linear motor 100 of the present invention, the housing 11 includes an upper case 112 and a bottom case 113, and the middle case 111 connects the upper case 112 and the bottom case 113. In an embodiment of the present invention, since the upper case 112 and the bottom case 113 are connected to the middle case 111, the wing portions 1311 of the brackets 13 are fixed at the positioning notches 1110, and the brackets 13 are difficult to shift. When one of the upper shell 112, the bottom shell 113 or the middle shell 111 is damaged, the three parts can be detached, maintained and replaced, so that the situation that the whole part needs to be replaced due to partial damage is avoided, and the maintenance and replacement cost is reduced.
In the invention, only the positioning notch 1110 matched with the wing part 1311 of the bracket 13 is arranged on the middle shell 111, so that the movement of the bracket 13 is limited, the limit of the bracket 13 caused by additionally arranging a clamping structure is reduced, and the vibration-proof effect of the bracket 13 can be achieved.
In order to avoid the unstable installation and the shaking of the middle shell 111, the upper shell 112 and/or the bottom shell 113 are provided with a protruding position-locking portion 1120, the protruding position-locking portion 1120 is provided at the edge of the upper shell 112 or the edge of the bottom shell 113, and the protruding position-locking portion 1120 abuts against the wall surface of the middle shell 111 to limit the middle shell 111.
The upper shell 112 and/or the bottom shell 113 may further be provided with a limiting structure to limit the middle shell 111 in multiple directions. When the linear motor 100 is longitudinally installed, the housing 11 is provided with the locking portion 1120 for self-positioning, so that the bracket 13 is limited in three axial directions, and the reliability of the linear motor 100 is improved.
In the assembling process, after the bracket 13 is mounted on the yoke 21, the wing portion 1311 of the bracket 13 is placed in the positioning notch 1110 of the middle shell 111, so that the bracket 13 is mounted on the middle shell 111, and finally the upper shell 112 and the bottom shell 113 are assembled on the middle shell 111, so that while the whole housing 11 is mounted, the bracket 13 is firmly fixed inside the housing 11, the edge of the elastic element 25 is pressed by the upper shell 112 and the bottom shell 113, the coil 12 wound on the bracket 13 is fixed, the yoke 21 and the magnet 22, the magnetic conductive plate 23 and the counterweight 24 on the yoke 21 are also limited inside the housing 11, and the fixing and limiting functions of the components inside the whole linear motor 100 are mutually limited. The linear motor 100 of the present invention is easy and fast to assemble while still maintaining stability.
The linear motor 100 of the present invention, the magnetic circuit system enclosed by the magnet 22, the magnetic conductive plate 23 and the yoke 21, and the bracket 13 serve as electromagnetic damping. The vibration principle of the linear motor 100 of the present invention is the vibration principle of the magnetic linear motor 100, and is not described in detail in this embodiment. In addition, in order to increase the damping effect of bracket 13, positioning portion 1312 is a copper ring around which coil 12 is wound, and the copper ring and coil 12 are located between magnet 22 and side wall 216. Compared with the general sheet-shaped bracket 13, the bracket 13 with the overall shape like a copper ring structure surrounds the periphery of the magnetic circuit system, the magnetic force lines penetrate through the bracket 13 in a large area, and the electromagnetic damping effect of the bracket 13 is larger. The response time of the linear motor 100 can be adjusted by adjusting the height of the bracket 13, the operation is simple, and the efficiency is higher. In an embodiment of the present invention, the coil 12 is located between the wing portion 1311 of the bracket 13 and the yoke 21, so that the height of the bracket 13 is increased, the response time of the linear motor 100 is increased, and the operation is simple and the efficiency is higher.
Further, the linear motor 100 is mounted with the circuit board 30, the circuit board 30 is mounted on the inner wall of the middle case 111 and part of the structure of the circuit board 30 is clamped on the positioning notch 1110 to energize the circuit board 30.
Further, as shown in fig. 1 to 5, the linear motor 100 of the present invention is a linear motor 100 with a magnetic structure, and the vibrator assembly 20 includes two sets of elastic elements 25, a magnet 22, a magnetic conductive plate 23, a weight 24 and a yoke 21, which are vertically symmetric. The stator assembly 10 includes two sets of coils 12 and a bracket 13 which are vertically symmetrical.
Specifically, the linear motor 100 is provided with two yokes 21 which are vertically symmetrical, the two yokes 21 being a first yoke 211 and a second yoke 212, respectively, the first yoke 211 and the second yoke 212 facing oppositely.
One set of magnets 22 and magnetically permeable plates 23 is mounted on first yoke 211, and the other set of magnets 22 and magnetically permeable plates 23 is mounted on second yoke 212. After the two sets of magnets 22 and the magnetic conductive plate 23 are assembled to the first yoke 211 and the second yoke 212, respectively, the two sets of coils 12 and the bracket 13 are disposed on the first yoke 211 and the second yoke 212, respectively. The first and second yokes 211 and 212 are mounted inside the housing 11 through the bracket 13, and the difficulty of assembling the entire linear motor 100 is low.
The bottom of the first magnetic yoke 211 is abutted with the bottom of the second magnetic yoke 212, and the magnetic poles of the adjacent surfaces of the two magnets are the same.
Specifically, two brackets 13 are mounted on first and second yokes 211 and 212, two brackets 13 are mounted on middle case 111, upper case 112 and bottom case 113 are assembled on middle case 111, and two brackets 13 are firmly fixed inside case 11 and edges of two elastic members 25 are pressed by upper case 112 and bottom case 113 while the entire case 11 is mounted. The two coils 12 wound around the two brackets 13 are also fixed, and the two coils 12 respectively limit the first yoke 211 and the second yoke 212. The bottom of the first magnetic yoke 211 abuts against the bottom of the second magnetic yoke 212, and the two sets of magnets 22, the magnetic conducting plate 23 and the counterweight 24 are also limited by the two magnetic yokes 21, the bracket 13, the upper shell 112 and the bottom shell 113, that is, the fixing and limiting functions of the various components inside the whole linear motor 100 are mutually limited. The linear motor 100 of the present invention is easy and quick to assemble while still maintaining stability.
The connection manner of the elastic element 25 and the upper shell 112 or the bottom shell 113 may be an elastic connection, and the connection manner of the elastic element 25 and the outer shell 11 is not limited herein.
In an embodiment of the present invention, no connection structure is provided between the first yoke 211 and the second yoke 212, and the first yoke 211 and the second yoke 212 are in contact with each other by abutting, so that the space occupied by the linear motor 100 is reduced.
In addition to this embodiment, a connection structure may be provided between the first and second yokes 21 and 21 to fix the first and second yokes 21 and 21, and the connection manner between the yokes 21 is not limited herein.
The present invention further provides an electronic device, which includes the linear motor 100, and the specific structure of the linear motor 100 refers to the foregoing embodiments, and since the electronic device adopts all technical solutions of all the foregoing embodiments, the electronic device at least has all beneficial effects brought by the technical solutions of the foregoing embodiments, and details are not repeated herein.
The key point of the present invention is to add the magnetic yoke 21 to connect the magnetic body 22, the magnetic conductive plate 23 and other accessories or components in the vibrator assembly 20 together, and then assemble them together on the housing 11, so as to achieve the effects of fast assembly and simple assembly, and also ensure the internal stability of the linear motor 100.
The upper casing 112, the bottom casing 113 or the middle casing 111 of the present invention may be provided with an interface, and the circuit board 30 of the linear motor 100 is connected to the interface to connect an external power source and drive the linear motor 100 to operate.
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 (7)
1. A linear motor, comprising:
a housing;
the stator assembly is arranged on the shell and comprises a bracket and a coil, the bracket is arranged on the shell, and the coil is wound on the bracket; and
the vibrator assembly comprises two magnetic circuit assemblies, each magnetic circuit assembly comprises a magnetic yoke and a magnet fixed on the magnetic yoke, and the magnetic yokes of the two magnetic circuit assemblies are attached and fixed; the magnetic yoke comprises a bottom and side walls, the bottom and the side walls form a containing groove in a surrounding mode, the magnet is contained in the containing groove, the side walls are provided with avoiding notches, the avoiding notches are communicated with the containing groove, the support comprises wing portions and positioning portions, the wing portions are fixedly connected with the positioning portions, the positioning portions are inserted into the containing groove, the avoiding notches and the wing portions are oppositely arranged to avoid the wing portions, and the wing portions are fixed on the shell.
2. The linear motor of claim 1, wherein the vibrator assembly further comprises a magnetically conductive plate secured to an end of the magnet distal from the yoke.
3. The linear motor according to claim 2, wherein the bracket has a through hole, the vibrator assembly further comprises a weight block and an elastic member, the magnetic conductive plate is connected to the weight block through the through hole, and the elastic member is connected to the housing and the weight block, respectively.
4. The linear motor according to claim 1, wherein the outer housing comprises a middle housing, an upper housing and a bottom housing, the middle housing connects the upper housing and the bottom housing, the middle housing is provided with a positioning notch, and the wing portion is disposed in the positioning notch for limiting the bracket.
5. The linear motor according to claim 4, wherein the upper shell and/or the bottom shell are/is provided with a protruding retaining portion, the protruding retaining portion is provided at the edge of the upper shell or the edge of the bottom shell, and the protruding retaining portion abuts against the wall surface of the middle shell to limit the middle shell.
6. The linear motor according to any one of claims 1 to 5, wherein the positioning portion is a copper ring around which the coil is wound, and the copper ring and the coil are located between the magnet and the side wall.
7. An electronic device characterized by comprising the linear motor of any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111359132.XA CN113991963B (en) | 2021-11-16 | 2021-11-16 | Linear motor and electronic apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111359132.XA CN113991963B (en) | 2021-11-16 | 2021-11-16 | Linear motor and electronic apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN113991963A CN113991963A (en) | 2022-01-28 |
| CN113991963B true CN113991963B (en) | 2022-11-01 |
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| CN115102354A (en) * | 2022-06-21 | 2022-09-23 | 歌尔股份有限公司 | Vibration device and electronic apparatus |
| CN115333319A (en) * | 2022-07-27 | 2022-11-11 | 歌尔股份有限公司 | Vibration exciter |
| CN115473404A (en) * | 2022-09-02 | 2022-12-13 | 哈尔滨工程大学 | Novel electromagnetic actuator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10112970A (en) * | 1996-10-04 | 1998-04-28 | Denso Corp | Stepping motor |
| TWM514168U (en) * | 2015-04-02 | 2015-12-11 | Topray Mems Inc | Linear resonant actuator |
| CN207652282U (en) * | 2017-12-12 | 2018-07-24 | 歌尔科技有限公司 | A kind of linear vibration motor |
| CN214177551U (en) * | 2020-09-30 | 2021-09-10 | 瑞声科技(新加坡)有限公司 | Sound production device |
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