WO2006058474A1

WO2006058474A1 - The vibration motor with an inner eccenter

Info

Publication number: WO2006058474A1
Application number: PCT/CN2005/001243
Authority: WO
Inventors: Shijin He; Libo Li; Bingzhi Ren; Zhengao He; Qin Lu
Original assignee: Hengdian Group Dmegc Joint-Stock Co., Ltd
Priority date: 2004-11-30
Filing date: 2005-08-11
Publication date: 2006-06-08
Also published as: CN2817199Y

Abstract

A vibration motor includes housing, a stator and rotor assembly in the housing, and a blank cap mated with the housing. The characters are that the rotor assembly are within the housing, and the shaft has an inner eccenter. The barycenter of said inner eccenter is away from the center axes of the shaft.

Description

Internal vibrator vibration motor

The present invention relates to an electric machine, and more particularly to a structural improvement of a vibrating motor in which a vibrator is disposed in a casing. Background technique

Vibration motors have a wide range of applications in everyday life. The motor currently used basically consists of placing the vibration block outside the motor housing. For example, the Chinese patent publication discloses an eccentric rotor and a flat type vibration motor having the same and a method of manufacturing the same (patent number: 99124972. 0), which discloses an eccentric rotor which integrates the bearing and the commutator itself , reducing the number of components, facilitating installation and reducing cost, and mass production, including: printed circuit commutator base material, forming shaft mounting holes in the center, forming a plurality of sector-shaped members on one side thereof; winding type electric The pivot coil is eccentric and integrated with the other surface of the printed circuit commutator base material; the end terminal portion is disposed at an outer peripheral portion of the printed circuit integral sub-base material; the bearing portion penetrates the shaft mounting hole, and a portion protrudes from the fan shape Body part side; eccentric weight set on the printed circuit commutator base material.

A vibrating motor having a pivotal armature has been proposed (Patent No. 85101773). The vibration motor includes a stator (3) having iron cores (13) of two planar coils (9, 11) and having at least A magnet (15, 16) is formed by an arcuate arcuate air gap at the end faces of the coils (9, 11) which are spaced apart from each other. In the air gap, the sliding elements (23, 25) of the armature (7) are The movable armature (7) is mounted on the motor shaft (5) and can be pivoted.

Although these technical solutions have greatly improved the existing technology to a certain extent, they have also achieved certain Effect. However, since the vibration block is provided with certain defects, it is inconvenient to install, and it is easy to cause the rotation shaft to bend. At work, the motor is not efficient, the energy loss is high, and the working noise is also large. The stability of the work is not ideal, and the anti-interference ability of the motor is not high, which limits the application range. In addition, the mating of the vibrating block and the rotating shaft is not very reasonable, and it is prone to looseness after a long period of work. Invention of the invention

The invention mainly solves the technical problems that the vibration block provided by the prior art is not reasonable, the working efficiency of the motor is not high, the stability is not ideal, and the processing is difficult, and the vibration block is placed in the shell. Internal vibrating motor with internal cavity, reasonable design, favorable installation, high working efficiency, low energy loss, and less susceptible to external interference.

The invention simultaneously solves the technical problems that the prior art has the structure that the structure is not compact, the design of the rotor is not reasonable, the rotation axis is large, and the like, and the structure is scientific, the rotation axis is small, Internal vibrator motor with long service life.

The above technical problem of the present invention is mainly solved by the following technical solution: an internal vibrating motor includes a housing, a stator assembly and a rotor assembly disposed in the housing, and an end cap assembly matched with an end of the housing, The rotor assembly is integrally disposed in the inner cavity of the housing, and the inner vibrator whose center of gravity is offset from the central axis of the rotating shaft is disposed on the rotating shaft of the rotating assembly; the rotating shaft is sleeved coaxially with the rotating shaft The coil fixing block is provided with a coil on the coil fixing block, and the coil is disposed on the periphery of the magnetic steel of the stator assembly.

The invention arranges the vibrator in the casing, not only effectively reduces the influence of the external environment on the motor, but also makes the motor have a wider application range; and optimizes the structure of the motor to make it more reasonable. The coil here is connected to the coil fixing block by glue. Preferably, the coil fixing block is mated with the bearing B, the bearing B is sleeved on the rotating shaft; and the outer ring of the bearing B is connected to the inner wall of the magnetic steel. The bearing B of the present invention is sleeved in the middle portion of the rotating shaft instead of being disposed at the end of the rotating shaft. This can effectively ensure the smoothness of the rotating shaft when rotating, and reduce the disturbance when rotating.

Preferably, the rotating shaft is sleeved on a bearing A provided at one end of the housing, and the bearing A is matched with the housing through a bearing sleeve; magnetic steel is sleeved on the bearing sleeve.

Preferably, the housing is provided with a mating section that is matched with the bearing sleeve; the mating section is a cylindrical body extending toward the inner cavity of the housing, and the inner wall of the mating section is tightly matched with the outer wall of the bearing sleeve. .

Preferably, the inner vibrator is a fan-shaped body, the inner vibrator is provided with a bayonet, and the rotating shaft is provided with a matching slot; the central axis of the rotating shaft is coaxial with the inner vibrator . The buckle is easy to assemble and the fit is also stable.

Preferably, one side of the inner vibrator is provided with a loop, and the loop is made of plastic, wherein the axis and the central axis of the rotating shaft coincide with each other.

Preferably, one end of the rotating shaft is provided with a commutator, and the end cover of the corresponding end is provided with a brush, and the lead wire passes through the end cover to the outside.

In order to reduce the energy loss, it is preferable that the bearing A and the bearing B are oil-impregnated bearings. Therefore, the invention has the following advantages: 1. The design is reasonable, the structure is simple and compact; 2. The working efficiency is high, the energy loss is small, and the external interference is not easy; 3. The rotating shaft is small, easy to install, long in service life, stable in operation Good sex. DRAWINGS

Figure 1 is a schematic view showing the structure of the present invention;

2 is a schematic side view of an enlarged inner vibrator of the present invention; In the figure, the housing 1, the bearing sleeve 2, the bearing A3, the rotating shaft 4, the coil 5, the magnetic steel 6, the bearing B7, the coil fixing block 8, the inner vibrator 9, the ring 10, the brush 11, the end cover 12, and the change The directional device 13, the lead wire 14, the mating segment 15, the inner cavity 16, the bayonet 17, and the card slot 18. Best way to implement the invention

The technical solutions of the present invention will be further specifically described below by way of embodiments and with reference to the accompanying drawings. Embodiment: An internal vibrator motor includes a housing 1, a stator assembly and a rotor assembly disposed in the housing 1, and an end cap assembly mated with the housing. The rotor assembly is disposed in the inner cavity 16 of the housing 1, and an inner vibrator 9 is provided on the rotating shaft 4 of the rotor assembly, and the center of gravity of the inner vibrator 9 is offset from the central axis of the rotating shaft 4.

The inner vibrator 9 is a fan-shaped body, and a bayonet 17 is provided thereon, and a latching groove 18 is provided on the rotating shaft 4. The central axis of the rotating shaft 4 is disposed coaxially with the inner vibrator 9. The rotating shaft 4 is coupled with a coil fixing block coaxial with the bearing B7. The coil fixing block 8 is provided with a coil 5, and the coil 5 is disposed on the periphery of the magnetic steel 6 of the stator assembly. The rotating shaft 4 is sleeved on the bearing A3, and the bearing A3 is matched with the housing 1 through the bearing sleeve 2; the magnetic steel 6 is arranged on the bearing sleeve 2. The inner vibrator 9 is provided with a loop 10 on one side, and the loop 10 is made of plastic, wherein the axis coincides with the central axis of the rotary shaft 4. One end of the rotating shaft 4 is provided with a commutator 13, and the end cover 12 corresponding to one end thereof is provided with a brush 11, and the lead wire 14 passes through the end cover 12 to the outside. The housing 1 is provided with a mating section 15 that mates with the bearing sleeve 2; the bearing A3 and the bearing B7 are oil-impregnated bearings.

During operation, the rotating shaft rotates to drive the inner vibrator provided in the housing to rotate. Since the vibrator is placed in the housing, the interference and influence from the outside is small.

The stator assembly, rotor assembly and end cap assembly of the present invention are well known to those of ordinary skill in the art and will not be described herein.

The specific embodiments described herein are merely illustrative of the spirit of the invention. The invention belongs to A person skilled in the art can make various modifications or additions to the specific embodiments described or in a similar manner, without departing from the spirit of the invention or beyond the scope of the appended claims.

Although the housing 1, the bearing sleeve 2, the bearing A3, the rotating shaft 4, the coil 5, the magnetic steel 6, the bearing B7, the coil fixing block 8, the inner vibrator 9, the ring 10, the brush 11, the end are used more frequently. The terms cap 12, commutator 13, lead wire 14, mating segment 15, inner cavity 16, bayonet 17, card slot 18, etc., do not preclude the possibility of using other terms. These terms are only used to describe and explain the nature of the invention more conveniently; it is inconsistent with the spirit of the invention to interpret them as any additional limitation.

Claims

Rights request

An inner vibrator motor comprising a housing (1), a stator assembly and a rotor assembly disposed in the housing (1), and an end cap assembly mated with an end of the housing (1), characterized in that The rotor assembly is integrally disposed in the inner cavity (16) of the casing (1), and the inner vibrator (9) whose center of gravity is offset from the central axis of the rotating shaft (4) is provided on the rotating shaft (4) of the rotor assembly; a coil fixing block coaxial with the rotating shaft (4) is sleeved thereon

(8) A coil (5) is disposed on the coil fixing block (8), and the coil (5) is disposed on a periphery of the magnetic steel (6) of the stator assembly.

The internal vibrator motor according to claim 1, wherein said coil fixing block (8) is coupled to a bearing B (7), and said bearing B (7) is sleeved on a rotating shaft ( 4) Upper; and the outer ring of the bearing B (7) is connected to the inner wall of the magnetic steel (6).

The internal vibrator motor according to claim 2, wherein said rotating shaft (4) is sleeved on a bearing A (3) provided at one end of the casing (1), said bearing A ( 3) Matching the housing (1) through the bearing sleeve (2); magnetic steel (6) is placed on the bearing sleeve (2).

The internal vibrating motor according to claim 3, characterized in that the housing (1) is provided with a mating section (15) matched with the bearing sleeve (2); The segment (15) is a cylindrical body extending toward the inner cavity (16) of the casing (1), and the inner wall of the mating segment (15) is tightly fitted to the outer wall of the bearing sleeve (2).

The internal vibrator motor according to claim 1 or 2 or 3 or 4, wherein said inner vibrator (9) is a sector, and said inner vibrator (9) is provided with a bayonet ( 17), the rotating shaft (4) is provided with a matching slot (18); the central axis of the rotating shaft (4) is coaxial with the inner vibrator (9).

The internal vibrating motor according to claim 1 or 2 or 3 or 4, wherein a ring (10) is provided on one side of said inner vibrator (9), said ring (10) Made of plastic, wherein the axis coincides with the central axis of the rotating shaft (4).

The internal vibrating motor according to claim 5, wherein a ring (10) is provided on one side of the inner vibrator (9), and the ring (10) is made of plastic, wherein Axis and the axis of rotation

The center axes of (4) coincide with each other.

The internal vibrating motor according to claim 1 or 2 or 3 or 4, wherein a commutator (13) is provided at one end of said rotating shaft (4), and an end cap of the corresponding end is provided (12) is provided with a brush (11), and its lead wire (14) passes through the end cover (12) to the outside.

The internal vibrating motor according to claim 5, wherein a commutator (13) is provided at one end of the rotating shaft (4), and an end cover (12) corresponding to one end thereof is provided. The brush (11) has its lead wire (14) passing through the end cap (12) to the outside.

The internal vibrator motor according to claim 5, wherein said bearing A (3) and bearing B (7) are oil-impregnated bearings.