CN214412444U

CN214412444U - Oscillating vibration motor

Info

Publication number: CN214412444U
Application number: CN202023347693.1U
Authority: CN
Inventors: 陈捷
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-10-15
Anticipated expiration: 2030-12-31

Abstract

The utility model provides a swinging vibration motor, which comprises a rotor assembly, a soft magnetic material casing sleeved on the rotor assembly, an upper end cover connected with one end of the rotor assembly and matched with one end of the soft magnetic material casing, and a lower end cover connected with the other end of the rotor assembly and matched with the other end of the soft magnetic material casing; wherein, the soft magnetic material casing is interior to encircle to be provided with a plurality of magnet fixed slots, all fixedly in each magnet fixed slot is provided with magnet. The utility model provides a swing vibrating motor can improve the magnetic permeability of magnet, promotes the motor performance.

Description

Oscillating vibration motor

Technical Field

The utility model belongs to the technical field of the motor technique and specifically relates to a swing vibrating motor is related to.

Background

Electric toothbrush need adopt motor drive brush head to produce the vibration, and magnet bonding is on the casing in current mode, by the location of magnet locating rack, because the thinner magnet magnetic leakage of casing is serious, influences the moment consumption of motor. And results in a complicated assembly process and reduced assembly efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a swing vibrating motor, motor and electric toothbrush to bond magnet on the casing among the alleviating prior art, fix a position by the magnet locating rack, because the thinner magnet magnetic leakage of casing is serious, influence the technical problem of the moment consumption of motor.

The utility model provides a swing vibration motor, which comprises a rotor assembly, a soft magnetic material casing sleeved on the rotor assembly, an upper end cover connected with one end of the rotor assembly and matched with one end of the soft magnetic material casing, and a lower end cover connected with the other end of the rotor assembly and matched with the other end of the soft magnetic material casing; wherein, the soft magnetic material casing is interior to encircle to be provided with a plurality of magnet fixed slots, all fixedly in each magnet fixed slot is provided with magnet.

The embodiment of the utility model provides a following beneficial effect has been brought: the magnet positioning groove is directly formed in the shell by adopting a soft magnetic material, so that the magnetic permeability of the magnet can be improved, the performance of the motor can be improved, the assembly process can be simplified, and the manufacturing cost can be reduced.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

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

Fig. 1 is a structural diagram of a swing vibration motor according to an embodiment of the present invention;

fig. 2 is an exploded view of a vibration motor according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a soft magnetic casing of a vibration motor according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a soft magnetic casing and a magnet of a swing vibration motor according to an embodiment of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "physical quantity" in the formula, unless otherwise noted, is understood to mean a basic quantity of a basic unit of international system of units, or a derived quantity derived from a basic quantity by a mathematical operation such as multiplication, division, differentiation, or integration.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Please refer to fig. 1-4, in which fig. 1 is a structural diagram of a swing vibration motor according to an embodiment of the present invention; fig. 2 is an exploded view of a vibration motor according to an embodiment of the present invention; fig. 3 is a schematic structural diagram of a soft magnetic casing of a vibration motor according to an embodiment of the present invention; fig. 4 is a schematic structural diagram of a soft magnetic casing and a magnet of a swing vibration motor according to an embodiment of the present invention. As shown in fig. 1 to 4, the swing vibration motor includes:

the rotor assembly 200 and the soft magnetic material casing 300 sleeved on the rotor assembly, further comprising an upper end cover 100 connected with one end of the rotor assembly 200 and matched with one end of the soft magnetic material casing 300, and a lower end cover 400 connected with the other end of the rotor assembly 200 and matched with the other end of the soft magnetic material casing 300; a plurality of magnet fixing slots 310 are circumferentially arranged in the soft magnetic material casing 300, and a magnet 320 is fixedly arranged in each magnet fixing slot.

In this embodiment, the casing of the oscillating vibration motor is directly formed by integrally using soft magnetic materials (the common soft magnetic materials are iron-silicon alloy, various soft magnetic ferrites, and the like), a plurality of magnet fixing grooves 310 are formed in the casing 300 made of the soft magnetic materials in an encircling manner, and each magnet fixing groove is internally and fixedly provided with a magnet 320, so that the magnetic permeability of the magnets can be improved, and the performance of the motor can be improved. In addition, since the magnet 320 is directly fixed in the magnet fixing groove 310, the magnet is not fixed by bonding, the thickness of the casing is not reduced, and a serious magnetic flux leakage phenomenon is not generated.

Specifically, the rotor assembly comprises a rotor core and a coil arranged on the rotor core in a surrounding mode.

In this embodiment, the rotor assembly having the above structure can more stably rotate in the soft magnetic casing as the stator.

Specifically, as shown in fig. 3 and 4, 4 magnet fixing grooves 310 are circumferentially disposed in the soft magnetic housing 300, and are respectively designated as a first magnet fixing groove 311, a second magnet fixing groove 312, a third magnet fixing groove 313 and a fourth magnet fixing groove 314 in a counterclockwise direction.

In this embodiment, 4 magnet fixing slots 310 are circumferentially disposed in the soft magnetic casing 300, so that the magnets 320 can be more uniformly distributed and fixed, and the rotor assembly 300 is more stable in the rotating process, thereby reducing the torque power consumption of the motor.

Specifically, as shown in fig. 3 and 4, a first magnet 321 is fixedly disposed in the first magnet fixing groove 311, a second magnet 322 is fixedly disposed in the second magnet fixing groove 312, a third magnet 323 is fixedly disposed in the third magnet fixing groove 313, and a fourth magnet 324 is fixedly disposed in the fourth magnet fixing groove 314.

In this embodiment, the rotor assembly 200 swings between the first magnet 321 and the fourth magnet 324, and the mounting position of the first magnet 321 is restricted by the first magnet fixing groove 311, the mounting position of the second magnet 322 is restricted by the second magnet fixing groove 312, the mounting position of the third magnet 323 is restricted by the third magnet fixing groove 313, and the mounting position of the fourth magnet 324 is restricted by the fourth magnet fixing groove 314, respectively, thereby ensuring the mounting position accuracy of the first magnet 321 and the fourth magnet 324.

Specifically, as shown in fig. 3 and 4, the thickness of the first magnet 321 is less than or equal to the depth of the first magnet fixing groove 311, the thickness of the second magnet 322 is less than or equal to the depth of the second magnet fixing groove 312, the thickness of the third magnet 323 is less than or equal to the depth of the third magnet fixing groove 313, and the thickness of the fourth magnet 324 is less than or equal to the depth of the fourth magnet fixing groove 313.

In this embodiment, by setting the depth of each magnet fixing groove to be greater than or equal to the thickness of the magnet, the magnet can be more stably fixed, and the positional accuracy of the assembly can be improved.

Specifically, as shown in fig. 3 and 4, a first wall thickness corresponding to the soft magnetic material casing between the first magnet 321 and the second magnet 322 is greater than a thickness of the first magnet 321, and the first wall thickness is greater than a thickness of the second magnet 322.

In this embodiment, the thickness of the soft magnetic material casing in the region between the first magnet 321 and the second magnet 322 is ensured to be sufficient, so as to avoid magnetic leakage due to the thin wall thickness of the soft magnetic material casing.

Specifically, as shown in fig. 3 and 4, a second wall thickness of the soft magnetic housing between the second magnet 322 and the third magnet 323 is smaller than the thickness of the second magnet 322, and the second wall thickness is smaller than the thickness of the third magnet 323. The second wall thickness is less than the first wall thickness.

In this embodiment, in order to ensure that soft magnetic material casing 300 can more adapt rotor subassembly 200's shape, generally set up soft magnetic material casing 300 into the thin shape in the middle of the two is thick, if the thickness of above-mentioned 4 magnets is the same, then can with second magnet 322 with between the third magnet 323 the second wall thickness that the soft magnetic material casing corresponds is less than the thickness of second magnet 322, so can not only avoid because of the thinner and production magnetic leakage of the wall thickness of soft magnetic material casing can effectively practice thrift the required material of soft magnetic material casing 300 shaping moreover.

Specifically, as shown in fig. 3 and 4, a connection line between the center of the first magnet 321 and the center of the third magnet 323 is a first connection line, a connection line between the center of the second magnet 322 and the center of the fourth magnet 324 is a second connection line, and an intersection point between the first connection line and the second connection line is located on the central axis of the rotor assembly 200.

In this embodiment, the first magnet 321 and the third magnet 323 are arranged to be symmetric with respect to the center axis of the rotor assembly 200, and the second magnet 322 and the fourth magnet 324 are arranged to be symmetric with respect to the center axis of the rotor assembly 200, so that the rotor assembly 200 can be effectively ensured to rotate stably.

Specifically, as shown in fig. 3 and 4, a limiting protrusion 330 for limiting a rotation range of the rotor assembly 200 is disposed on an inner wall of the soft magnetic casing 300 and on one side of the magnet fixing groove 310.

In this embodiment, by limiting the rotor assembly 200, the rotor assembly 200 can be prevented from swinging beyond a preset range, and the technical problem that the rotor assembly 200 is stuck and cannot return can be solved.

In summary, the oscillating vibration motor has the following technical benefits:

1. the soft magnetic material casing 300 can reduce magnetic leakage and avoid influencing the torque power consumption of the motor;

2. the magnet positioning groove is directly formed in the soft magnetic material shell 300, so that the magnetic permeability of the magnet can be improved, and the performance of the motor is also improved;

3. the magnet positioning groove is directly formed in the soft magnetic material shell 300, so that the assembly process is simplified, and the manufacturing cost is reduced.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A swing vibration motor is characterized by comprising a rotor assembly, a soft magnetic material casing, an upper end cover and a lower end cover, wherein the soft magnetic material casing is sleeved on the rotor assembly; wherein, the soft magnetic material casing is interior to encircle to be provided with a plurality of magnet fixed slots, all fixedly in each magnet fixed slot is provided with magnet.

2. The oscillating vibration motor of claim 1, wherein the rotor assembly includes a rotor core and a coil circumferentially disposed on the rotor core.

3. The oscillating vibration motor of claim 1, wherein 4 magnet fixing slots are formed around the soft magnetic material casing, and are respectively designated as a first magnet fixing slot, a second magnet fixing slot, a third magnet fixing slot and a fourth magnet fixing slot in a counterclockwise direction.

4. The oscillating vibration motor of claim 3, wherein a first magnet is fixedly disposed in the first magnet-fixing groove, a second magnet is fixedly disposed in the second magnet-fixing groove, a third magnet is fixedly disposed in the third magnet-fixing groove, and a fourth magnet is fixedly disposed in the fourth magnet-fixing groove.

5. The wobbling vibration motor as claimed in claim 4, wherein the thickness of the first magnet is less than or equal to the depth of the first magnet fixing groove, the thickness of the second magnet is less than or equal to the depth of the second magnet fixing groove, the thickness of the third magnet is less than or equal to the depth of the third magnet fixing groove, and the thickness of the fourth magnet is less than or equal to the depth of the fourth magnet fixing groove.

6. The oscillating vibration motor of claim 5, wherein a first wall thickness of the soft magnetic housing between the first magnet and the second magnet is greater than a thickness of the first magnet, and wherein the first wall thickness is greater than a thickness of the second magnet.

7. The oscillating vibration motor of claim 6, wherein a second wall thickness of the soft magnetic housing between the second magnet and the third magnet is less than a thickness of the second magnet, and wherein the second wall thickness is less than a thickness of the third magnet.

8. The oscillating vibration motor of claim 7, wherein the second wall thickness is less than the first wall thickness.

9. The oscillating vibration motor of claim 4, wherein a line connecting the center of the first magnet and the center of the third magnet is defined as a first line, a line connecting the center of the second magnet and the center of the fourth magnet is defined as a second line, and an intersection point between the first line and the second line is located on the central axis of the rotor assembly.

10. The wobbling vibration motor as claimed in claim 1, wherein a limiting protrusion for limiting a rotation range of the rotor assembly is provided on an inner wall of the soft magnetic material housing at one side of the magnet fixing groove.