CN213461490U

CN213461490U - Vibration motor

Info

Publication number: CN213461490U
Application number: CN202022180207.5U
Authority: CN
Inventors: 崔志勇; 毛路斌; 王尧
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-06-15
Anticipated expiration: 2030-09-28
Also published as: WO2022062022A1

Abstract

The utility model provides a vibrating motor, including the casing that has accommodating space and accommodate oscillator and stator in accommodating space and support the oscillator suspension in the elastic support piece of accommodating space, one of them party of oscillator and stator includes the coil pack, and one of them party of oscillator and stator includes the magnetic circuit subassembly, and the magnetic circuit subassembly extends along the axial, and elastic support piece is located the oscillator along the axial relative both ends; the coil assembly comprises a first coil and a second coil which act with the magnetic circuit assembly, the first coil is positioned on two opposite sides of the magnetic circuit assembly relative to a first direction perpendicular to the axial direction, the second coil is positioned on two opposite sides of the magnetic circuit assembly relative to a second direction perpendicular to the axial direction, and the first direction and the second direction are not parallel to each other; two sides of the single first coil along the first direction are respectively arranged opposite to the magnetic circuit component, and the polarities of the corresponding magnetic poles are opposite; two sides of the single second coil along the second direction are respectively arranged opposite to the magnetic circuit component and the polarities of the corresponding magnetic poles are opposite.

Description

Vibration motor

[ technical field ] A method for producing a semiconductor device

The utility model relates to the field of electric machines, especially, relate to a vibrating motor.

[ background of the invention ]

With the development of electronic technology, portable consumer electronic products, such as mobile phones, handheld game consoles, navigation devices or handheld multimedia entertainment devices, are more and more sought after by people, and these electronic products generally use a vibration motor 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.

When the vibration motor in the related art generates the oblique driving force, the magnetic field is usually arranged obliquely or the coil is arranged obliquely, but the generated oblique driving force is easily coupled in two directions by the two methods, and the generated oblique driving force is small, which affects the performance of the vibration motor.

Therefore, it is necessary to provide a novel vibration motor to solve the above problems.

[ Utility model ] content

An object of the utility model is to provide a better vibrating motor of performance.

The technical scheme of the utility model as follows: a vibration motor comprises a shell with a containing space, a vibrator and a stator which are contained in the containing space, and an elastic support piece which supports the vibrator in a suspension mode in the containing space, wherein one of the vibrator and the stator comprises a coil assembly, the other of the vibrator and the stator comprises a magnetic circuit assembly, the magnetic circuit assembly extends along the axial direction, and the elastic support piece is positioned at two opposite ends of the vibrator along the axial direction;

the coil assembly comprises a first coil and a second coil which act with the magnetic circuit assembly, the first coil is positioned at two opposite sides of the magnetic circuit assembly relative to a first direction perpendicular to the axial direction, the second coil is positioned at two opposite sides of the magnetic circuit assembly relative to a second direction perpendicular to the axial direction, and the first direction and the second direction are not parallel to each other; two sides of the single first coil along the first direction are respectively arranged opposite to the magnetic circuit component, and the polarities of the corresponding magnetic poles are opposite; two sides of the single second coil along the second direction are respectively arranged opposite to the magnetic circuit component, and the polarities of the corresponding magnetic poles are opposite.

As an embodiment of the present invention, the first direction is perpendicular to the second direction.

As an embodiment of the utility model, magnetic circuit assembly includes the edge first magnet steel and the second magnet steel that first direction was arranged in proper order, first magnet steel with the opposite direction that magnetizes of second magnet steel.

As an embodiment of the present invention, the first magnetic steel and the second magnetic steel are all along the second direction is magnetized.

As an embodiment of the utility model, first magnet steel includes the edge magnet steel and first magnet steel on the first that the second direction was folded and is established, the second magnet steel includes the edge magnet steel and second lower magnet steel on the second that the second direction was folded and is established, first last magnet steel with magnet steel is just right on the second, first magnet steel with magnet steel is just right under the second, the magnetization direction of first last magnet steel with the magnetization opposite direction of magnet steel under the second, first magnet steel with the magnetization opposite direction of magnet steel on the second, the magnetization direction of first last magnet steel with the magnetization direction of magnet steel is the contained angle setting on the second.

As an embodiment of the present invention, the first coil and the second coil are arranged in parallel or in series.

As an embodiment of the present invention, the stator is fixed to the housing, and the stator includes the coil block, the vibrator includes the magnetic circuit block.

As an embodiment of the present invention, the vibrator further includes two weight blocks respectively abutting against the two opposite sides of the magnetic circuit assembly.

As an embodiment of the utility model, elastic support piece is including being fixed in the first fixed arm of balancing weight, being fixed in the second fixed arm and the connection of casing first fixed arm with the second fixed arm just encircles the elasticity arm that the balancing weight set up.

As an embodiment of the utility model, the casing includes upper cover plate and lower apron, relative parallel and interval setting and being used for connecting that relative parallel and interval set up the upper cover plate with the preceding curb plate and the posterior lateral plate of apron and relative parallel and interval setting and being used for connecting down the upper cover plate with the left side board and the right side board of apron down, the upper cover plate the lower apron preceding curb plate the posterior lateral plate the left side board and the right side board enclose and form accommodating space, coil pack is fixed in on the upper cover plate and/or the lower apron and/or preceding curb plate and/or posterior lateral plate.

The beneficial effects of the utility model reside in that: the coil assembly or the magnetic circuit assembly is driven to vibrate through the interaction of the coil assembly and the magnetic circuit assembly, so that the vibration of the vibration motor is realized, the first coils are positioned on two opposite sides of the magnetic circuit assembly relative to a first direction perpendicular to the axial direction, the second coils are positioned on two opposite sides of the magnetic circuit assembly relative to a second direction perpendicular to the axial direction, and the first direction and the second direction are not parallel to each other; furthermore, the direction of the driving force generated between the first coil and the magnetic circuit assembly is different from the direction of the driving force generated between the second coil and the magnetic circuit assembly, and the driving forces in the two directions are not coupled.

[ description of the drawings ]

Fig. 1 is a schematic view of an overall structure of a vibration motor according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of the vibration motor of fig. 1;

FIG. 3 is a schematic view of a portion of the structure of FIG. 1;

FIG. 4 is a cross-sectional view taken along A-A of FIG. 1;

fig. 5 is a schematic view of an overall structure of a vibration motor according to another embodiment of the present invention;

fig. 6 is a cross-sectional view taken along line B-B of fig. 5.

100. A housing; 101. an accommodating space; 110. an upper cover plate; 120. a lower cover plate; 130. a front side plate; 140. a rear side plate; 150. a left side plate; 160. a right side plate; 200. a vibrator; 210. a magnetic circuit assembly; 211. a first magnetic steel; 212. a first upper magnetic steel; 213. a first lower magnetic steel; 214. a second magnetic steel; 215. a second upper magnetic steel; 216. a second lower magnetic steel; 220. a balancing weight; 221. a connecting portion; 222. a fixed part; 300. a stator; 310. a coil assembly; 311. a first coil; 312. a second coil; 400. an elastic support member; 410. a first fixed arm; 420. a second fixed arm; 430. a spring arm; 440. and (7) soldering lugs.

[ detailed description ] embodiments

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will be further described with reference to the accompanying drawings and embodiments.

Referring to fig. 1 to 6, an embodiment of the present invention provides a vibration motor, which includes a housing 100 having an accommodating space 101, and a vibrator 200 and a stator 300 accommodated in the accommodating space 101, wherein one of the vibrator 200 and the stator 300 includes a coil assembly 310, and the other of the vibrator 200 and the stator 300 includes a magnetic circuit assembly 210, and the vibrator 200 is driven to vibrate through interaction between the stator 300 and the vibrator 200.

Preferably, the stator 300 is fixed to the case 100, and the stator 300 includes a coil assembly 310, the coil assembly 310 is fixed to the case 100, and the vibrator 200 includes the magnetic circuit assembly 210.

Referring to fig. 1 and fig. 2, in an embodiment, the housing 100 includes an upper cover plate 110 and a lower cover plate 120 that are disposed in parallel and at an interval, a front side plate 130 and a rear side plate 140 that are disposed in parallel and at an interval and are used for connecting the upper cover plate 110 and the lower cover plate 120, and a left side plate 150 and a right side plate 160 that are disposed in parallel and at an interval and are used for connecting the upper cover plate 110 and the lower cover plate 120, wherein the upper cover plate 110, the lower cover plate 120, the front side plate 130, the rear side plate 140, the left side plate 150, and the right side plate 160 enclose an accommodation.

Referring to fig. 2-4 and fig. 6, in an embodiment, the coil assembly 310 includes a first coil 311 and a second coil 312, which are engaged with the magnetic circuit assembly 210, the first coil 311 is located at two opposite sides of the magnetic circuit assembly 210 with respect to a first direction D1 perpendicular to an axial direction thereof, the second coil 312 is located at two opposite sides of the magnetic circuit assembly 210 with respect to a second direction D2 perpendicular to the axial direction thereof, and the first direction D1 and the second direction D2 are not parallel to each other; the two sides of the single first coil 311 along the first direction D1 are respectively disposed opposite to the magnetic circuit assembly 210 and the polarities of the corresponding magnetic poles are opposite; the two sides of the single second coil 312 along the second direction D2 are respectively disposed opposite to the magnetic circuit assembly 210 and the polarities of the corresponding magnetic poles are opposite. Since the first coils 311 are located at two opposite sides of the magnetic circuit assembly 210 with respect to the first direction D1 perpendicular to the axial direction, the second coils 312 are located at two opposite sides of the magnetic circuit assembly 210 with respect to the second direction D2 perpendicular to the axial direction, and the first direction D1 and the second direction D2 are not parallel to each other; further, the direction of the driving force generated between the first coil 311 and the magnetic circuit assembly 210 is different from the direction of the driving force generated between the second coil 312 and the magnetic circuit assembly 210, and there is no coupling between the driving forces in the two directions, and in addition, the driving force between the coil assembly 310 and the magnetic circuit assembly 210 can be increased by the simultaneous action of the first coil 311 and the second coil 312, thereby improving the performance of the vibration motor.

Referring to fig. 3, fig. 4 and fig. 6, in an embodiment, the first direction D1 is perpendicular to the second direction D2. And then can produce drive power in two mutually perpendicular directions, drive power combined action in two directions can merge and form the slant drive power, and can not couple between the drive power in two directions, and each other does not influence, makes vibrating motor's performance better.

Referring to fig. 4 and 6, specifically, two first coils 311 are respectively disposed on the upper cover plate 110 and the lower cover plate 120, and two second coils 312 are respectively disposed on the front side plate 130 and the rear side plate 140, so that the coil assembly 310 can be conveniently and stably fixed on the housing 100.

In one embodiment, the first coil 311 and the second coil 312 are arranged in parallel or in series. In this embodiment, the first coil 311 and the second coil 312 may be connected in series or in parallel, and preferably, the first coil 311 and the second coil 312 are arranged in parallel. When the first coil 311 and the second coil 312 are arranged in parallel, the first coil 311 and the second coil 312 can be independently controlled, and have multiple operation modes, so that the user experience can be better.

Referring to fig. 6, in an embodiment, the magnetic circuit assembly 210 includes a first magnetic steel 211 and a second magnetic steel 214 sequentially arranged along a first direction D1, and magnetizing directions of the first magnetic steel 211 and the second magnetic steel 214 are opposite.

Preferably, the first magnetic steel 211 and the second magnetic steel 214 are both magnetized along the second direction D2.

Referring to fig. 6, in the present embodiment, the magnetic circuit assembly 210 can form 3 magnetic field loops, and the 3 magnetic field loops can also vertically pass through the first coil 311 and the second coil 312, so as to generate two driving forces in different directions.

Referring to fig. 4, in another embodiment, the magnetic circuit assembly 210 includes a first magnetic steel 211 and a second magnetic steel 214 sequentially arranged along a first direction D1, the first magnetic steel 211 includes a first upper magnetic steel 212 and a first lower magnetic steel 213 stacked along a second direction D2, the second magnetic steel 214 includes a second upper magnetic steel 215 and a second lower magnetic steel 216 stacked along a second direction D2, the first upper magnetic steel 212 is opposite to the second upper magnetic steel 215, the first lower magnetic steel 213 is opposite to the second lower magnetic steel 216, a magnetizing direction of the first upper magnetic steel 212 is opposite to a magnetizing direction of the second lower magnetic steel 216, magnetizing directions of the first lower magnetic steel 213 and the second upper magnetic steel 215 are opposite, and a magnetizing direction of the first upper magnetic steel 212 and a magnetizing direction of the second upper magnetic steel 215 form an included angle.

Preferably, the magnetizing direction of the first upper magnetic steel 212 and the magnetizing direction of the second upper magnetic steel 215 are arranged at an angle of 45 degrees. Furthermore, the magnetic field of the magnetic circuit assembly 210 can better vertically pass through the first coil 311 and the second coil 312 at the same time, so that the magnetic circuit assembly 210 in this embodiment can obviously improve the distribution of the magnetic field, and the magnetic field can better vertically pass through the coils.

Referring to fig. 4, in the present embodiment, the magnetic circuit assembly 210 can form 4 magnetic field loops, and the 4 magnetic field loops can vertically penetrate through the first coil 311 and the second coil 312, so as to improve the utilization rate of the magnetic field and further improve the driving force of the vibration motor.

Referring to fig. 2, in an embodiment, the vibrator 200 further includes two weight blocks 220 respectively abutting against two opposite sides of the magnetic circuit assembly 210. Specifically, the two weight blocks 220 abut on two sides of the magnetic circuit assembly 210 facing the left side plate 150 and the right side plate 160, respectively, to avoid affecting the assembly of the coil assembly 310.

Referring to fig. 2, in an embodiment, the vibration motor further includes an elastic supporting member 400 accommodated in the housing 100 and suspending and supporting the vibrator 200.

Referring to fig. 2, specifically, the elastic supporting member 400 includes a first fixing arm 410 fixed to the weight block 220, a second fixing arm 420 fixed to the housing 100, and an elastic arm 430 connecting the first fixing arm 410 and the second fixing arm 420 and disposed around the weight block 220.

Referring to fig. 2 and 3, in particular, the weight member 220 includes a connecting portion 221 for connecting the magnetic circuit assembly 210 and a fixing portion 222 for fixing the first fixing arm 410, and the elastic arm 430 is disposed around the fixing portion 222.

Specifically, the first fixing arm 410 and the fixing portion 222 are welded together by the welding lug 440, and the second fixing arm 420 and the housing 100 are welded together by the welding lug 440.

Referring to fig. 2, preferably, there are four elastic supporting members 400, and two elastic supporting members 400 are fixed on each weight block 220.

The above are only embodiments of the present invention, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. A vibration motor is characterized by comprising a shell with a containing space, a vibrator and a stator which are contained in the containing space, and an elastic support piece which supports the vibrator in a suspension mode in the containing space, wherein one of the vibrator and the stator comprises a coil assembly, the other one of the vibrator and the stator comprises a magnetic circuit assembly, the magnetic circuit assembly extends along the axial direction, and the elastic support piece is positioned at two opposite ends of the vibrator along the axial direction;

2. The vibration motor according to claim 1, wherein: the first direction is perpendicular to the second direction.

3. The vibration motor according to claim 2, wherein: the magnetic circuit component comprises a first magnetic steel and a second magnetic steel which are sequentially arranged along the first direction, and the magnetizing directions of the first magnetic steel and the second magnetic steel are opposite.

4. The vibration motor according to claim 3, wherein: the first magnetic steel and the second magnetic steel are magnetized along the second direction.

5. The vibration motor according to claim 3, wherein: first magnet steel includes the edge magnet steel and first magnet steel down are gone up to the second direction stack and are established first, the second magnet steel includes the edge magnet steel and second magnet steel down are gone up to the second direction stack and are established, first go up the magnet steel with the magnet steel is just right on the second, first magnet steel with the magnet steel is just right under the second, the magnetization direction of first going up the magnet steel with the magnetization opposite direction of magnet steel under the second, first magnet steel with the magnetization opposite direction of magnet steel on the second, the magnetization direction of first going up the magnet steel with the magnetization direction of magnet steel is the contained angle setting on the second.

6. The vibration motor according to claim 1, wherein: the first coil and the second coil are arranged in parallel or in series.

7. The vibration motor according to any one of claims 1 to 6, wherein: the stator is fixed to the housing, and the stator includes the coil assembly, and the vibrator includes the magnetic circuit assembly.

8. The vibration motor according to claim 1, wherein: the oscillator also comprises two balancing weights which are respectively abutted to two opposite sides of the magnetic circuit component.

9. The vibration motor according to claim 8, wherein: the elastic supporting piece comprises a first fixed arm fixed on the balancing weight, a second fixed arm fixed on the shell and an elastic arm connected with the first fixed arm and the second fixed arm and surrounding the balancing weight.

10. The vibration motor according to claim 7, wherein: the coil component comprises an upper cover plate, a lower cover plate, a front side plate, a rear side plate, a left side plate and a right side plate, wherein the upper cover plate and the lower cover plate are arranged in parallel relatively at intervals, the front side plate and the rear side plate are arranged in parallel relatively at intervals and are used for connecting the upper cover plate and the lower cover plate, the left side plate and the right side plate are arranged in parallel relatively at intervals and are used for connecting the upper cover plate and the lower cover plate, the upper cover plate, the lower cover plate, the front side plate, the rear side plate, the left side plate and the right side plate are enclosed to form the accommodating space, and the coil component is fixed on the upper cover plate and/or the lower cover plate.