CN201369626Y - Flat motor - Google Patents

Abstract

The utility model discloses a flat motor, which comprises a casing, a rotating shaft riveted on the casing, a rotor fixed on the rotating shaft, a circuit board covered and connected to the casing, and a circuit board fixed on the circuit board and accommodated in the casing. For the stator, the casing is provided with a riveting part connected with the rotating shaft, wherein the flat motor is also provided with a locking washer fixed to the riveting part of the casing. The lock washer is fixed on the riveted part of the casing, which increases the binding force of the riveted part of the casing to the rotating shaft, prevents the rotating shaft from skewing, loosening and falling off during the falling process, and ensures the stable performance of the flat motor.

Description

flat motor

【Technical field】

The utility model relates to a motor, in particular to a flat motor.

【Background technique】

With the development of new permanent magnet materials, microelectronics technology, automatic control technology and power electronics technology, flat motors have made great progress. The flat motor uses electronic commutation to replace the traditional mechanical commutation. With its advantages of reliable performance, no wear, low failure rate, small size and high efficiency, it has gradually moved from the initial military field to aerospace, medical, information, and home appliances. And the field of industrial automation is developing rapidly.

Please refer to Figures 4-5, the related art flat motor 100' can be connected to an external circuit board (not shown), which includes a shell 1', a rotating shaft 2' riveted on the shell 1', fixed on The rotor 3' on the rotating shaft 2', the stator 4' covered on the shell 1' and the brush 41' fixed on the stator 4', wherein the shell 1' is provided with a riveting part 11'. The flat motor 100' is also provided with an adhesive backed gasket 5' between the housing 1' and the rotor 3'.

The connection between the rotating shaft 2' and the riveting part 11' of the housing 1' is achieved by riveting, resulting in insufficient bonding force between the rotating shaft 2' and the riveting part 11' of the housing 1', causing the flat motor 100' to be riveted during the fall process. The deformation of the part 11 ′ affects the verticality of the rotating shaft 2 ′, and in severe cases, the rotating shaft 2 ′ becomes loose and falls off, thereby affecting the performance of the flat motor 100 ′.

Therefore, it is necessary to provide a new flat motor to overcome the above disadvantages.

【Content of utility model】

The purpose of the utility model is to provide a flat motor with stable performance.

The purpose of this utility model is achieved as follows: a flat motor, which includes a housing, a rotating shaft riveted on the housing, a rotor fixed on the rotating shaft, a stator cover connected to the housing, and the housing is provided with a shaft connected to the rotating shaft. The riveting part of the housing, wherein the flat motor is also provided with a locking washer fixed to the riveting part of the casing.

Compared with the related technology, the utility model has the following advantages: the lock washer is fixed on the riveted part of the shell, which increases the bonding force of the riveted part of the shell to the rotating shaft, and prevents the rotating shaft from skewing, loosening and falling off during the falling process phenomenon, which ensures the stable performance of the flat motor.

【Description of drawings】

Fig. 1 is a perspective view of a flat motor of the present invention.

Fig. 2 is a sectional view of the flat motor of the present invention.

FIG. 3 is an enlarged view of part A shown in FIG. 2 .

4 is a sectional view of a related art flat motor.

FIG. 5 is an enlarged view of part B shown in FIG. 4 .

【Detailed ways】

The flat motor 100 of the present invention will be described in detail below in conjunction with the accompanying drawings, please refer to Fig. 1-Fig. 3 .

The flat motor 100 can be welded to an external circuit board (not shown), which mainly includes a casing 1, a rotating shaft 2 riveted on the casing 1, a rotor 3 fixed on the rotating shaft 2, and a stator covered on the casing 1 4. The housing 1 is provided with a riveted part 13 connected to the rotating shaft 2, wherein the flat motor 100 is also provided with a lock washer 5 fixed on the riveted part 11 of the housing 1 and a lock washer 5 located between the lock washer 5 and the rotor 3 Adhesive gasket6.

The stator 4 is provided with a mounting portion (not labeled) and a bearing portion (not shown) opposite to the mounting portion, wherein a plurality of conductive sheets 42 are provided on the mounting portion, by means of the conductive sheets 42, the flat motor 100 can be surface mounted The technology is welded on the external circuit board; the bearing part is provided with a magnetic ring 43 and a brush 41 inside the magnetic ring 43 , and there are several buckle parts 44 extending away from the stator 4 on the periphery of the stator 4 .

The rotor 3 is provided with a tray 31 , coils 32 and weights 33 respectively placed on the tray 31 . A through hole 34 is provided at the center of the tray 31 for the rotation shaft 2 to pass through, and a bearing 35 is installed in the through hole 34 .

The casing 1 is a hollow cylinder, which includes a circular bottom 11 and a side wall 12 extending from the bottom 11 , the bottom 11 and the side wall 12 jointly form a storage space (not labeled) for accommodating the rotor 3 . A riveting portion 13 for riveting the rotating shaft 2 is provided in the middle of the bottom surface 11 . In addition, the housing 1 is further provided with a buckling portion 14 buckled to the buckling portion 44 of the stator 4 .

The rotating shaft 2 is a short cylinder made of conductive material.

The locking washer 5 is in the shape of a ring, and the portion of the locking washer 5 that is in contact with the shell riveting portion 13 is provided with an internal thread 51 .

The adhesive-backed gasket 6 abuts against the locking washer 5 and the bearing 35 of the rotor 3 respectively.

When assembling, firstly, the rotating shaft 2 is riveted to the casing 1, and then the locking washer 5 is locked on the riveting part 13 of the casing 1, and the adhesive backing gasket 6 is abutted on the locking washer 5, and then the strap The rotor 3 with the bearing 35 is mounted on the housing 1 through the rotating shaft 2 , and finally the bearing part of the stator 4 faces the housing 1 and its buckling part 43 is aligned with the buckling part 44 of the housing 1 and installed on the housing 1 .

The lock washer 5 is fixed on the riveted part 13 of the shell 1, which increases the bonding force of the riveted part 13 of the shell 1 to the rotating shaft 2, avoids the phenomenon of skewing, loosening and falling off of the rotating shaft 2 during the falling process, and ensures the safety of the product. reliability.

The above are only preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, but any equivalent modification or change made by those of ordinary skill in the art according to the content disclosed in the present utility model, All should be included in the scope of protection described in the claims.

Claims (6)

1. A flat motor, which comprises a casing, a rotating shaft riveted on the casing, a rotor fixed on the rotating shaft, a cover connected to the stator on the casing, and the casing is provided with a riveted portion that links to each other with the rotating shaft, and is characterized in that: The flat motor is also provided with a lock washer fixed to the riveted portion of the housing. 2. The flat motor according to claim 1, characterized in that: said flat motor is further provided with an adhesive gasket between the locking washer and the rotor. 3 . The flat motor according to claim 2 , wherein the housing comprises a bottom surface and a side wall extending from the bottom surface, and the riveting part is arranged at a middle part of the bottom surface of the housing. 4 . 4. The flat motor according to claim 3, wherein the rotor is provided with a tray, a magnetic ring and a weight respectively placed on the tray, and a through hole is provided in the center of the tray, and a bearing is installed in the through hole . 5 . The flat motor as claimed in claim 4 , wherein the adhesive-backed gasket abuts against the lock washer and the bearing of the rotor respectively. 6 . 6 . The flat motor according to claim 5 , wherein a buckling portion is provided on the housing, and a buckling portion opposite to the buckling portion is disposed on the stator. 7 .

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