CN113708588A

CN113708588A - Vibration motor

Info

Publication number: CN113708588A
Application number: CN202110949902.XA
Authority: CN
Inventors: 张金泉; 黄登治; 黄道臣; 黄拔梓
Original assignee: Shenzhen Lebond Technology Co ltd
Current assignee: Shenzhen Lebond Technology Co ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2021-11-26
Anticipated expiration: 2041-08-18
Also published as: CN113708588B

Abstract

The application provides a vibrating motor, which comprises a housin, stator line frame and rotor, be equipped with the stator line frame in the casing, the stator line frame is including assembling two silicon steel that are the type of calligraphy each other, the silicon steel includes this somatic part and joint portion, this somatic part is used for the winding, this somatic part forms the magnetic pole along the axial of stator line frame, the casing is used for fixed rotor, the rotor corresponds at least a pair of magnetic pole setting of stator line frame respectively, be used for the magnetic line of force of induction magnetic pole and luffing motion, the mutual adaptation equipment of joint portion is equipped with the anti-skidding mechanism who is used for restricting silicon steel and produces relative movement along the axial on the joint portion. Vibrating motor in this application forms the magnetic pole through the stator line frame that can assemble, through the stator core that can assemble, compares prior art, is showing the convenience that has improved its assembly of motor inner structure and changed.

Description

Vibration motor

Technical Field

The application belongs to the technical field of motors, and particularly relates to a vibration motor.

Background

With the development of electronic technology, portable consumer electronic products are more and more sought after by people, such as mobile phones, handheld game consoles, navigation devices or handheld multimedia entertainment devices, and the like, generally use vibration motors to perform system feedback, such as incoming call prompt, information prompt, navigation prompt, vibration feedback of game consoles, and the like. Such a wide application requires a vibration motor having high performance and long service life.

In the prior art, a vibration motor includes a fixed component, a vibration component disposed in the fixed component, and an elastic connection member. The fixed part comprises a shell and a cover plate, the shell and the cover plate form an accommodating space, the vibration part comprises a coil or magnetic steel, and the elastic connecting piece supports the vibration part in the accommodating space in a suspension manner.

In which, the magnetic steel (such as silicon steel sheet) is usually a complete and integrated design structure. This causes certain drawbacks, specifically, a, it is not convenient to assemble the magnetic steel and the coil support (coil holder) on site; b. the winding difficulty is increased, and the quick external winding operation and the accurate winding control are not facilitated; c. the elastic connecting piece (such as a spring leaf) is connected with the end cover of the motor, and when the spring leaf with different thicknesses needs to be replaced, the die communicated with the end cover needs to be replaced together, so that the manufacturing cost is increased.

Disclosure of Invention

The application provides a vibration motor to improve the convenience that its assembly of motor inner structure was changed.

In order to solve the above problems, the technical scheme provided by the application is as follows:

the utility model provides a vibrating motor, includes casing, stator line frame and rotor, be equipped with the stator line frame in the casing, the stator line frame is including assembling two silicon steels that are the type of Chinese character 'ao' each other, the silicon steel includes this somatic part and junction site, this somatic part is used for the winding, this somatic part is followed the axial of stator line frame forms the magnetic pole, the casing is used for fixing the rotor, the rotor corresponds respectively at least a pair of magnetic pole setting of stator line frame is used for responding to the magnetic line of force and the luffing motion of magnetic pole, the mutual adaptation equipment of junction site, be equipped with the anti-skidding mechanism that is used for restricting silicon steel to produce relative movement along the axial in the junction site.

In one possible design, the anti-slip mechanism includes a protrusion disposed on one of the silicon steels and a recess disposed on the other of the silicon steels, and the protrusion is correspondingly fitted to the recess.

In a possible design, the convex-concave fit formed by the protrusion corresponding to the recess is in a relative semicircular shape, a triangular shape or a rectangular shape.

In one possible embodiment, the rotor is mounted in the housing by means of a spring connection assembly.

In a possible design, the elastic connection assembly includes a spring plate, the housing is provided with a mounting groove, the spring plate is inserted into the mounting groove, and the rotor is connected with the housing through the spring plate.

In a possible design, the elastic connection assembly further includes a gasket, and the gasket is disposed between the spring plate and the housing.

In a possible design, the rotor includes permanent magnet and the motor shaft that is connected, the spring leaf includes depressed part and butt portion, the motor shaft install in the depressed part, the butt portion with the casing is connected, the thickness of spring leaf sets up adjustably.

In a possible design, the casing includes removable epitheca and inferior valve, the epitheca with assemble through profile of tooth structure adaptation between the inferior valve, the stator line frame includes the axial fixity structure, the epitheca or the inferior valve is equipped with the draw-in groove structure, the axial fixity structure card is located the draw-in groove structure.

In a possible design, the axial fixing structure includes a fixing plate, the fixing plate is fixedly disposed at an end of the silicon steel, and the fixing plate is tightly inserted into the slot structure.

An electric device comprises a circuit structure and the vibration motor, wherein the vibration motor is electrically connected with the circuit structure.

The beneficial effect of this application:

vibrating motor in this application forms the magnetic pole through the stator line frame that can assemble, through the stator core that can assemble, compares prior art, is showing the convenience that has improved its assembly of motor inner structure and changed.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic view of a self-contained structure of a vibration motor of the present invention;

fig. 2 is a schematic view of a disassembled exploded structure of the vibration motor of the present invention;

FIG. 3 is a schematic perspective view of a spring plate of the vibration motor of the present invention;

FIG. 4 is a schematic structural view of a single silicon steel of the vibration motor of the present invention;

FIG. 5 is an enlarged view of the area A in FIG. 4;

FIG. 6 is a schematic view of the enlarged area A of FIG. 4;

fig. 7 is a schematic view of the three structures of the display device enlarged corresponding to the area a in fig. 4.

Reference numerals:

10. a rotor frame;

11. a permanent magnet;

20. a stator bobbin;

21. a body portion;

221. concave-convex matching;

222. an axial fixation structure;

22. a joint portion;

30. a housing;

31. a tooth-shaped structure;

32. a slot structure;

40. a spring plate;

41. a recessed portion;

42. an abutting portion;

50. and (7) a gasket.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description of the present application, it is to be understood that the terms "inner," "outer," "upper," "bottom," "front," "back," and the like, when used in the orientation or positional relationship indicated in FIG. 1, are used solely for the purpose of facilitating a description of the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

It should be noted that the same reference numerals are used to denote the same components or parts in the embodiments of the present application, and for the same parts in the embodiments of the present application, only one of the parts or parts may be given the reference numeral, and it should be understood that the reference numerals are also applicable to the other same parts or parts.

The existing vibration motor has the defects that the magnetic steel (such as silicon steel sheet) contained in the existing vibration motor is usually a complete and integrated design structure, and the existing vibration motor is inconvenient to assemble and assemble, increases the winding difficulty, is inconvenient to replace internal components and the like. In order to solve the defects of the prior art, the application provides a vibration motor so as to improve the convenience of assembling and replacing the internal structure of the motor.

First, this embodiment first proposes an implementable protection scheme for a vibration motor:

as shown in fig. 1 and 2, a vibration motor includes a housing 30, a stator bobbin 20, and a rotor 10, wherein the housing 30 is used for fixing the rotor 10, the stator bobbin 20 is disposed in the housing 30, a coil is wound on the stator bobbin 20, the stator bobbin 20 is assembled with each other to form at least one pair of magnetic poles in a shape of a Chinese character 'ao', and the stator bobbin 20 has stator cores that are assembled in a mutually adaptive manner.

Vibrating motor in this application forms the magnetic pole through the stator line frame 20 that can assemble, through the stator core that can assemble, compares prior art, is showing the convenience that has improved its assembly of motor inner structure and changed.

The arrangement relationship of each member in the present application will be described in detail below.

As shown in fig. 2, the rotor 10 is respectively disposed corresponding to at least one pair of magnetic poles of the stator bobbin 20, and is configured to induce magnetic lines of force of the magnetic poles to swing up and down. Specifically, the rotor 10 is disposed at one end of the housing 30, the stator bobbin 20 is disposed at the other end of the housing 30, the rotor 10 is disposed to abut against or be adjacent to the stator bobbin 20, and the rotor 10 swings by inducing a magnetic force of the stator bobbin 20.

As shown in fig. 2, the stator bobbin 20 includes at least two pieces of silicon steel that can be assembled with each other to form a zigzag shape, the silicon steel includes a body portion 21 and a joint portion 22, the body portion 21 forms a magnetic pole along the axial direction of the stator bobbin 20 by the winding wound by the body portion 21, the joint portion 22 is assembled to form the stator core in a relatively fitting manner, and an anti-slip mechanism for restricting the silicon steel from moving relatively along the axial direction is provided on the joint portion 22.

As shown in fig. 4 to 7, the joint portions 22 of the two silicon steels are opposed and assembled to each other by a male-female fit 221 to restrict axial movement between the two silicon steels. Specifically, the anti-skid mechanism comprises a protrusion arranged on one piece of silicon steel and a recess arranged on the other piece of silicon steel, and the protrusion is correspondingly assembled with the recess. The structure arrangement not only can play a role in limiting and skid resistance, but also can be beneficial to reducing magnetic gaps.

Preferably, the concave-convex matching 221 formed by the protrusion corresponding to the recess is in a shape of a relative semicircle, triangle or rectangle. The gap between two of said engagement portions 22 lying opposite is less than 0.1 mm. The coil is an enameled wire and is spirally wound on the body portion 21.

As shown in fig. 2 and 3, the rotor 10 is mounted in the housing 30 by a resilient connection assembly.

Specifically, the elastic connection assembly includes a spring plate 40 and a gasket 50, the housing 30 is provided with a mounting groove, the spring plate 40 is inserted into the mounting groove, the gasket 50 is padded between the spring plate 40 and the housing 30, and the rotor 10 is connected to the housing 30 through the spring plate.

Further, the rotor 10 includes a permanent magnet 11 and a motor shaft connected to each other, the spring plate 40 includes a recessed portion 41 and an abutting portion 42, the motor shaft is mounted to the recessed portion 41, the abutting portion 42 is connected to the housing 30, and a thickness of the spring plate 40 is adjustably set.

As shown in fig. 1 and 2, the housing 30 includes an upper shell and a lower shell that are detachable, the upper shell and the lower shell are assembled together by a tooth-shaped structure 31, as shown in fig. 4, the stator bobbin 20 includes an axial fixing structure 222, the upper shell or the lower shell is provided with a slot structure 32, and the axial fixing structure 222 is clamped in the slot structure 32.

Preferably, the axial fixing structure 222 may be a fixing plate perpendicular to the axial direction, the fixing plates are respectively fixedly installed at two ends of the silicon steel, and when being installed, the fixing plates are tightly inserted into the slot structure 32 of the upper shell or the lower shell, so as to ensure that the stator bobbin 20 does not generate axial movement.

After having the above structural features, the present application can be implemented as the following process:

the present application provides a vibration motor, as shown in fig. 1 and 2, including a stator bobbin 20, the stator bobbin 20 including two silicon steels which are assembled, each silicon steel forming a magnetic pole, thereby forming a pair of magnetic poles N-S. The silicon steel includes a main body 21 extending toward one side and a joint 22 connected to the main body 21, and the two pieces of silicon steel form a stator core in a shape of Chinese character 'ao' through the joint 22. During assembly, the enameled wires can be wound on the body part 21 respectively, and then the two pieces of silicon steel are combined through the joint part 22, so that the speed and convenience of the winding process are greatly increased. And, utilize spiral winding, produce the electromagnetic force in the axial of motor, enameled wire utilization ratio increases to 100%. After assembly, the air gap/clearance of the two silicon steels at the joint part 21 is less than 0.1mm, which can reduce the magnetic loss.

As shown in fig. 4 to 7, for this purpose, a protrusion is provided on one of the engaging portions 22, a recess is provided on the other engaging portion 22, and the protrusion and the recess form a concave-convex fit 221, thereby restricting relative movement of the two engaging portions 22 in the axial direction. The male and female mating surfaces 221 may be semi-circular, triangular, or square. Compared with the integral arrangement of silicon steel, the stator bobbin 20 spliced by two pieces of silicon steel is easy to increase the magnetic loss due to the axial movement of any silicon steel, so that it is necessary to prevent the axial movement between the two pieces of silicon steel.

Further, as shown in fig. 2 and 3, the vibration motor further includes a housing 30 and a spring plate 40, and the rotor 10 is connected to the housing 30 through the spring plate 40 to limit a swing angle. Casing 30 is equipped with the mounting groove that supplies spring leaf 40 to insert the installation, puts into the mounting groove with gasket 50 earlier in, inserts spring leaf 40 again in the mounting groove, and gasket 50 is the plastic part, and spring leaf 40 is the metalwork, and gasket 50 can avoid spring leaf 40 and casing 30 to produce direct striking.

The thickness of the spring plate 40 can be flexibly set, preferably, the thickness of the spring plate 40 is 0.20mm to 0.40mm or 0.30mm, and the thickness of different spring plates can be changed according to the requirement of the elastic force.

As shown in fig. 3, the spring plate 40 includes a recessed portion 41 and an abutting portion 42, the recessed portion 41 is fixed on the rotating shaft, the abutting portion 42 is used for connecting with the housing 30, and according to the output magnitude of the torque, after a certain amount of deformation of the spring plate 40 is generated, there is enough material deformation allowance, so that it is avoided that the straight plate spring plate has no deformation allowance; and, make the structure comparatively compact.

As shown in fig. 2, the rotor frame 10 includes a permanent magnet 11 and a motor shaft, and the design of the rotor frame 10 plays a role of fixing the permanent magnet 11 on the shaft, fixing the spring plate 40 after reverse riveting, and the like; the permanent magnet 11 structure and the setting of magnetizing, motor shaft can be according to actual installation demand, changes at any time and matches in order to satisfy the structure of complete machine product, and simple structure is convenient for adjust shell fragment thickness.

On the other hand, the shell 30 further comprises a tooth-shaped structure 31 arranged at the edge of the upper shell and the lower shell, and the upper shell and the lower shell are connected through the tooth-shaped structure 31 or a triangular structure, so that the key of firmness and stability after the two parts of the parts are connected is met. The upper and lower slot structures 32 are mechanically press-fitted to the fixing plates 222 at two ends of the silicon steel after the stator bobbin 20 is mounted, so as to prevent the stator bobbin 20 from moving axially under the action of an axial force.

After the implementation process is completed, the following characteristics of the application can be realized:

1) the vibrating motor is convenient to wind, and has better assembly flexibility;

2) the shell fragment of removable different thickness changes elasticity, realizes moment of torsion output on a large scale, under same size and structure, can realize big moment of torsion output and low-power consumption output.

In a second embodiment, the present invention further provides a structural combination scheme of the vibration motor:

based on the first embodiment, the present embodiment further optimizes the structure of the stator bobbin 20 and the rotor 10 in the vibration motor, and the difference from the first embodiment is that,

a plurality of unit areas can be arranged in the same shell, a unit body composed of a stator bobbin 20 and a rotor 10 shown in fig. 1 or fig. 2 is arranged in each unit area, and then stator cores in the plurality of unit areas are assembled.

Preferably, such unit areas may be three or four, constituting a triangular or a four-corner assembled structure.

The electromagnetic performance should be superimposed after assembly.

Other structures are basically the same as those of the first embodiment, and thus are not described herein.

In a third embodiment, the present embodiment further provides a preferred collective protection scheme for the vibration motor:

as shown in fig. 1 and 2, a vibration motor includes a housing 30, a stator bobbin 20 is disposed in the housing 30, a coil is wound on the stator bobbin 20, the stator bobbin 20 is assembled with each other to form at least one pair of magnetic poles in a shape of a Chinese character 'ao', and the stator bobbin 20 has stator cores that are assembled to each other in a fitting manner. Vibrating motor in this application forms the magnetic pole through the stator line frame 20 that can assemble, through the stator core that can assemble, compares prior art, is showing the convenience that has improved its assembly of motor inner structure and changed. The arrangement relationship of each member in the present application will be described in detail below. As shown in fig. 2, the stator bobbin 20 includes at least two pieces of silicon steel that can be assembled, the silicon steel includes a body portion 21 and a joint portion 22, the coil is wound around the body portion 21, and the joint portion 22 is assembled to form the stator core in a relatively fitting manner. As shown in fig. 4 to 7, the joint portions 22 of the two silicon steels are opposed and assembled to each other by a male-female fit 221 to restrict axial movement between the two silicon steels. Preferably, the concave-convex fitting 221 has a semicircular shape, a triangular shape, or a rectangular shape. The gap between two of said engagement portions 22 lying opposite is less than 0.1 mm. The coil is an enameled wire and is spirally wound on the body portion 21. Referring to fig. 2 and 3, a rotor 10 is installed in the housing 30 through an elastic connection assembly, the rotor 10 is installed at one end of the housing 30, the stator bobbin 20 is installed at the other end of the housing 30, the rotor 10 abuts against or is adjacent to the stator bobbin 20, and the rotor 10 swings by sensing the magnetic force of the stator bobbin 20. Specifically, the elastic connection assembly includes a spring plate 40 and a gasket 50, the housing 30 is provided with a mounting groove, the spring plate 40 is inserted into the mounting groove, the gasket 50 is padded between the spring plate 40 and the housing 30, and the rotor 10 is connected to the housing 30 through the spring plate. Further, the rotor 10 includes a permanent magnet 11 and a motor shaft connected to each other, the spring plate 40 includes a recessed portion 41 and an abutting portion 42, the motor shaft is mounted to the recessed portion 41, the abutting portion 42 is connected to the housing 30, and a thickness of the spring plate 40 is adjustably set. As shown in fig. 1 and 2, the housing 30 includes an upper shell and a lower shell that are detachable, the upper shell and the lower shell are assembled together by a tooth-shaped structure 31, as shown in fig. 4, the stator bobbin 20 includes an axial fixing structure 222, the upper shell or the lower shell is provided with a slot structure 32, and the axial fixing structure 222 is clamped in the slot structure 32. Preferably, the axial fixing structure 222 may be a fixing plate perpendicular to the axial direction, the fixing plates are respectively fixedly installed at two ends of the silicon steel, and when being installed, the fixing plates are tightly inserted into the slot structure 32 of the upper shell or the lower shell, so as to ensure that the stator bobbin 20 does not generate axial movement.

This implementation provides a collection of all the preferred modes of the first embodiment, which facilitates implementation in the field as the best collection mode.

In a fourth embodiment, the present embodiment further provides a product application scheme of the vibration motor:

an electric device comprises a circuit structure and the vibration motor, wherein the vibration motor is electrically connected with the circuit structure. (not shown)

In practical applications, the electric device may be an electric toothbrush, and the electric toothbrush includes a main support, a tail support, a circuit board, two contact springs, and a wireless charging coil.

The circuit board is fixed on the main support and comprises two bonding pads serving as the electric connection ends, and the two bonding pads are arranged along the edge of the circuit board. The tail support is connected with the main support in a pluggable mode to form a connection state and a separation state, when the tail support is in the connection state, the contact elastic pieces are electrically connected with the bonding pads in a one-to-one correspondence mode, and when the tail support is in the separation state, the contact elastic pieces are electrically disconnected from the bonding pads. The tail support comprises a first installation part (the front end face of the support) and a second installation part (the outer wall of the support), the first installation part is used for winding the wireless charging coil, the second installation part is used for fixing a contact elastic sheet, the contact elastic sheet further comprises an extended body and a power connection part connected with the body, the power connection part is used for welding the wireless charging coil or soaking tin, and therefore the wireless charging coil can be electrically connected with the contact elastic sheet.

It is sufficient to see, this application vibrating motor can conveniently be applied to in any circuit or electric actuator that need charge.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a vibrating motor, its characterized in that includes casing, stator line frame and rotor, be equipped with the stator line frame in the casing, the stator line frame is including assembling two silicon steel that are the concave font each other, the silicon steel includes this somatic part and joint portion, this somatic part is used for the winding, this somatic part is followed the axial of stator line frame forms the magnetic pole, the casing is used for fixing the rotor, the rotor corresponds respectively the magnetic line of force of stator line frame sets up for the response the magnetic pole and the luffing motion, the mutual adaptation equipment of joint portion, be equipped with on the joint portion and be used for restricting silicon steel and produce anti-skidding mechanism that relative movement along the axial.

2. The vibration motor according to claim 1, wherein the anti-slip mechanism comprises a protrusion provided on one of the silicon steels and a recess provided on the other of the silicon steels, the protrusion being fitted to the recess correspondingly.

3. The vibration motor according to claim 2, wherein the protrusions are fitted into the recesses to form a convex-concave fit in a semicircular shape, a triangular shape, or a rectangular shape.

4. A vibration motor according to any one of claims 1-3, wherein the rotor is mounted in the housing by a resilient connection assembly.

5. The vibration motor of claim 4, wherein the elastic connection assembly comprises a spring plate, the housing is provided with a mounting groove, the spring plate is inserted into the mounting groove, and the rotor is connected with the housing through the spring plate.

6. The vibration motor of claim 5, wherein the resilient coupling assembly further comprises a spacer disposed between the spring plate and the housing.

7. The vibration motor according to claim 6, wherein the rotor includes a permanent magnet and a motor shaft connected, the spring plate includes a recess portion and an abutting portion, the motor shaft is mounted in the recess portion, the abutting portion is connected to the housing, and a thickness of the spring plate is adjustably set.

8. The vibration motor of claim 1, wherein the housing comprises an upper shell and a lower shell which are detachable, the upper shell and the lower shell are assembled in a tooth-shaped structure in a matching manner, the stator bobbin comprises an axial fixing structure, and the upper shell or the lower shell is provided with a clamping groove structure, and the axial fixing structure is clamped in the clamping groove structure.

9. The vibration motor of claim 8, wherein the axial fixing structure comprises a fixing plate fixed on the end of the silicon steel, and the fixing plate is tightly inserted into the slot structure.

10. An electrically powered device comprising a circuit structure and a vibration motor as claimed in any one of claims 1 to 9, the vibration motor being electrically connected to the circuit structure.