TWI681606B - motor - Google Patents

Abstract

A motor is provided to solve the problem where the conventional motor has a low safety in use and an unsmooth operation due to the leakage of the electricity transferring to the outer surface of the rotor through the magnetically conductive member. The motor includes a shaft, a stator assembly mounted around the shaft, and a rotor assembly having a bearing sleeve and first and second bearings that are received in the bearing sleeve and are mounted to the shaft. The rotor assembly includes an extension plate connected to the outer periphery of the bearing sleeve, and at least one magnetically conductive member mounted to the inner periphery of the extension plate. The extension plate and the at least one magnetically conductive member are spaced from each other by an insulating member.

Description

motor

The invention relates to a motor, in particular to a motor which can prevent the leakage of electricity to the outer surface of the rotor through the magnetic member.

Please refer to FIG. 1, which is a conventional motor rotor 9. The conventional motor rotor 9 has a base 91 and a plurality of magnetic members 92. The plurality of magnetic members 92 are combined and fixed in the base 91. On the peripheral wall, and spaced from each other. An embodiment of the motor rotor 9 similar to the conventional one has been disclosed in the patent application of the Republic of China Publication No. 200910738 “Outside Rotating Ceiling Fan Motor Rotor with Damping and Noise Reduction Effects”.

The above-mentioned conventional motor rotor 9 can be combined with a stator to form a motor, but the magnetic members 92 are directly coupled to the base 91. Therefore, if a leakage occurs during operation of the motor, the leakage will easily pass through at least one of the aforementioned The conduction of the magnetic member 92 to the base 91 is not only a fear of user's electric shock and safety, but also causes magnetic leakage of the magnetic members 92, which affects the smoothness of the overall motor operation.

In view of this, the conventional motors still need to be improved.

In order to solve the above problems, an object of the present invention is to provide a motor that does not leak electricity to the outer surface of the rotor through a magnetic member.

The following directivity or similar terms of the invention, such as "front", "rear", "left", "right", "upper (top)", "lower (bottom)", "inner", "outer" , "Side", etc., mainly refer to the directions of the attached drawings, and each directivity or its approximate terms are only used to help explain and understand the embodiments of the present invention, not to limit the present invention.

The motor of the present invention includes: a core shaft; a certain sub-group, the stator group is disposed on the outer periphery of the core shaft; and a rotor group, the rotor group has a bearing sleeve and a first bearing accommodated in the bearing sleeve And a second bearing, the first bearing and the second bearing are provided on the mandrel, the rotor set has an extension disc connected to the outer periphery of the bearing sleeve, the rotor set has at least one magnetic member disposed inside the extension disc, An insulating member separates the magnetic member and the extension plate.

According to this, the motor of the present invention can be insulated by the insulating member between the magnetic member and the extension plate, so there is no leakage of electricity to the extension plate through the magnetic member, so the user does not get an electric shock when touching the outer surface of the rotor It has the effect of improving the safety of use. In addition, the leakage of electricity can not be transmitted to the extension plate, so that the magnetic member will not produce magnetic leakage, so as to achieve the effect of keeping the overall motor running well and smoothly.

Wherein, the surface of the magnetic member away from the mandrel and the extension plate are preferably shielded and isolated by the insulating member. In this way, the leakage current will be more difficult to conduct from the magnetic member to the extension plate, which has the effect of further improving the safety of use and the smooth operation of the motor.

Wherein, the mandrel has a first shoulder, a second shoulder and a stator joint, the second shoulder is located between the first shoulder and the stator joint, and the stator assembly is connected to the stator joint . In this way, the stator assembly can be assembled after assembling the first bearing and the second bearing, which has the effect of improving assembly convenience.

Wherein, the bearing sleeve and the first shoulder portion can jointly clamp and position the first bearing, the rotor set has a fixing member disposed at the bottom end of the bearing sleeve, and the fixing member can clamp and position together with the second shoulder portion The second bearing. In this way, it has the effect of improving the assembly stability of the first bearing and the second bearing.

Wherein, the fixing member may have a ring piece and an elastic pressing piece. The ring piece is fixed on the bottom end of the bearing sleeve. The elastic pressing piece connects the ring piece and abuts the second bearing. In this way, the effect of stably fixing the second bearing can be improved by pressing against the deformation of the elastic pressing piece.

Wherein, the extension disk can be integrally formed on the outer periphery of the bearing sleeve by a recessed portion, the ring piece can be combined with the extension disk by a locking member, and the locking member is located in the recessed portion without protruding from the top surface of the extension disk. In this way, in addition to enhancing the structural strength of the extension disk itself, it can also improve the simplicity of the overall motor appearance.

Wherein, the ring piece may be combined with the bearing sleeve or the extension plate from the outer edge, and the elastic pressing member may sleeve the inner edge of the ring piece and abut the second bearing. In this way, the effect of stably fixing the second bearing can be improved by a simple structure.

Wherein, the ring piece can be combined with the bearing sleeve or the extension plate from the outer edge, the inner edge of the ring piece can be upturned and positioned on the inner ring surface of the elastic pressing piece, the upper and lower two of the elastic pressing piece The ends are respectively in contact with the ring pieces by the second bearing. In this way, the elastic pressing member can maintain the predetermined position and firmly abut the second bearing.

Wherein, the outer peripheral surface of the second bearing is preferably positioned at the junction of the bearing sleeve and the ring piece. In this way, it is convenient to adjust the concentricity of the second bearing and the first bearing.

Wherein, the junction of the bearing sleeve and the ring piece is preferably located in the middle of the outer peripheral surface of the second bearing. In this way, the effect of adjusting the concentricity of the second bearing and the first bearing is improved.

Wherein, the ring sheet may have a bent portion between the inner edge and the outer edge of the ring sheet, the outer edge of the ring sheet may be combined with the extension disk, the bent portion is positioned at the bottom end of the bearing sleeve, The outer peripheral surface of the second bearing is partially attached to the axial extension of the bent portion, the inner edge of the ring piece is connected to the elastic pressing member, and the elastic pressing member abuts the bottom of the second bearing. In this way, the convenience of adjusting the concentricity of the second bearing and the first bearing can be improved by a simple structure.

Wherein, the extension disc is preferably integrally connected to the outer periphery of the bearing sleeve. In this way, the structure formed by the extension disc and the bearing sleeve can be used not only for assembling the first bearing and the second bearing, but also for assembling the insulating member and indirectly positioning the magnetic member, thereby reducing motor parts and assembly steps, It has the effects of reducing manufacturing costs and improving assembly convenience and efficiency.

The motor can also be connected to a wireless communication module. In this way, the user can control the operating state of the motor through the wireless communication module, which has the effect of improving the convenience of use.

Wherein, the wireless communication module can be installed in an electric box. In this way, the wireless communication module can be protected and has the effect of reducing the failure rate of the wireless communication module.

Wherein, the electrical box can be combined with the mandrel. In this way, it has the effect of improving the convenience of assembly.

Wherein, the insulating member has a side wall connected with a rim, the insulating member can form a plurality of clamping spaces along the inner surface of the side wall, the number of the magnetic member can be several, and the plurality of magnetic members are respectively combined in the Several clip spaces. In this way, it has the effect of improving the convenience of operation when assembling and positioning the magnetic pieces.

Wherein, the stator group has an insulating sleeve combined with an iron core, a coil group is wound around the insulating sleeve, the iron core is diametrically opposed to the magnetic members, and the rim of the insulating member can be located between the coil group and the extension plate In between, the rim preferably covers the range of the axial projection of the coil assembly on the extension disk. In this way, the coil set and the extension plate can be isolated to ensure good insulation between the coil set and the extension plate, and even if the coil set accidentally scratches its insulating paint, it will not leak electricity to the The extension plate has the effect of improving the safety of use.

Wherein, the outer end of the extension disc may have a first skirt, the extension disc may be provided with several punching holes in the first skirt; the insulating member may further have a second skirt connected to a side wall, the The insulating member may be provided with a plurality of positioning holes in the second skirt, at least one of the aforementioned punching holes preferably forms a protrusion on the surface facing the second skirt; the second skirt fits the first skirt The protrusion extends through the corresponding positioning hole. In this way, since the insulating member has the second skirt, the first skirt of the extension plate can be fitted, and the corresponding protrusion on the second skirt is fixed by the latching of the punching protrusion on the first skirt The positioning hole makes it difficult for the insulating member to be displaced in the radial direction, so that the magnetic member can be maintained at a predetermined position, and has the effect of improving the smoothness of the motor operation.

Among them, a locking fastener can be locked at the corresponding punching holes and positioning holes. In this way, it has the effect of improving the stability of the combination.

Wherein, the outer end of the extension disc has a first skirt, the extension disc is provided with several punching holes in the first skirt; the insulating member has a second skirt connected to a side wall, the insulating member is located at the The surface of the second skirt edge facing the first skirt edge is provided with a plurality of hot-melt columns; the second skirt edge is in close contact with the first skirt edge, and each of the hot-melt columns is hot-melt combined with corresponding punching holes. In this way, the insulating member can be firmly combined with the extension plate, so that the magnetic member can be maintained at a predetermined position, and has the effect of improving the smoothness of the motor operation.

In order to make the above and other objects, features and advantages of the present invention more obvious and easy to understand, the following is a detailed description of preferred embodiments of the present invention, in conjunction with the attached drawings, as follows:

Please refer to FIG. 2, which is the first embodiment of the motor of the present invention, including a mandrel 1, a certain sub-group 2 and a rotor group 3, the stator group 2 is disposed on the outer periphery of the mandrel 1, the rotor group 3 The mandrel 1 is rotatably provided. The motor of the present invention can be applied to any type of motor structure. The present invention is described below by taking the motor applied to a ceiling fan as an example, but not limited thereto.

Please refer to FIGS. 2 and 4, the mandrel 1 may have a first shoulder 11, a second shoulder 12 and a stator coupling portion 13, the second shoulder 12 is located between the first shoulder 11 and the stator Between the coupling parts 13, the first shoulder 11 and the second shoulder 12 can be assembled and positioned by the rotor group 3, and the stator coupling part 13 can be assembled and positioned by the stator group 2. Wherein, the first shoulder 11 and the second shoulder 12 can be formed by the difference of the outer diameter of the mandrel 1 itself, or a set of tubes can be combined outside a tube core to the two of the sleeve The axial ends are not limited by the present invention.

The stator group 2 can be combined with an iron core 22 by an insulating sleeve 21, and a coil group 23 is wound around the insulating sleeve 21. In this embodiment, the stator group 2 can be connected to the stator coupling portion 13 of the mandrel 1 and the insulating sleeve 21 by a coupling ring seat 24, so as to stably fix the insulating sleeve 21, the iron core 22 and the coil group 23.

The rotor set 3 has a bearing sleeve 31 and a first bearing 32 and a second bearing 33 accommodated in the bearing sleeve 31, the first bearing 32 and the second bearing 33 can be sleeved on the mandrel respectively 1. The bearing sleeve 31 and the first shoulder portion 11 clamp and position the first bearing 32 together. The rotor set 3 further has a fixing member 34 disposed at the bottom end of the bearing sleeve 31 (in terms of the drawing direction), so that the fixing member 34 and the second shoulder 12 jointly clamp and position the second bearing 33. The fixing piece 34 may include a ring piece 341 and an elastic pressing piece 342. The ring piece 341 is fixed on the bottom end of the bearing sleeve 31. The elastic pressing piece 342 is connected to the ring piece 341 and abuts the first piece The second bearing 33 improves the effect of stably fixing the second bearing 33 by pressing the elastic pressing member 342 to deform.

In this embodiment, the rotor set 3 has an extension disk 35 connected to the outer periphery of the bearing sleeve 31. The extension disk 35 and the bearing sleeve 31 may be made of metal. The ring piece 341 of the fixing member 34 can be combined with the bearing sleeve 31 or the extension plate 35 by the outer edge 341b, and the elastic pressing member 342 can sleeve the inner edge 341a of the ring piece 341 and abut the second bearing 33. In addition, the extension disk 35 of this embodiment may be integrally formed by a recess 351 connected to the outer periphery of the bearing sleeve 31. In addition to enhancing the structural strength of the extension disk 35 itself, the ring piece 341 may also be combined by a locking member S The extension plate 35 allows the locking member S to be located in the recessed portion 351 without protruding from the top surface of the extension plate 35, so as to enhance the simplicity of the overall motor appearance. In addition, the outer end of the extension disc 35 may have a first skirt 352 extending radially outward, and the extension disc 35 may be provided with a plurality of punching holes 353 in the first skirt 352, at least one of the aforementioned punching holes 353 forming a protrusion 354.

Please refer to FIGS. 3 and 4, the rotor set 3 further has at least one magnetic member 36 disposed inside the extension disk 35, and the magnetic member 36 and the extension disk 35 are separated by an insulating member 37 to avoid the magnetic The conduction of current is generated between the member 36 and the extension disk 35. Preferably, the magnetic member 36 and the extension disk 35 are completely separated by the insulating member 37; that is, the top surface of the magnetic member 36 and the extension disk 35 are shielded and isolated by the insulating member 37, and The surface of the magnetic member 36 away from the mandrel 1 and the extension plate 35 are also shielded and isolated by the insulating member 37.

For example, but not limited to, the insulating member 37 of this embodiment has a side wall 371 connected to a rim 372, and the insulating member 37 is formed with a plurality of clamping spaces 373 along the inner surface of the side wall 371; A bump B is provided on the inner surface corresponding to each of the clamping spaces 373. The number of the magnetic members 36 may be several, and the plurality of magnetic members 36 are respectively combined in the plurality of clamping spaces 373, so that the plurality of magnetic members 36 can be radially opposed to the iron core 22 of the stator group 2, and each The magnetic member 36 preferably abuts the corresponding bump B to enhance the stability of the combination of the magnetic member 36 and the insulating member 37. The top surface of each magnetic member 36 and the extension disk 35 are shielded and isolated by the rim 372 of the insulating member 37, and the surface of each magnetic member 36 away from the mandrel 1 and the extension disk 35 are separated by The side wall 371 of the insulating member 37 is shielded and isolated.

Furthermore, the rim 372 of the insulating member 37 preferably extends radially toward the mandrel 1 by a predetermined distance, so that the rim 372 can be located between the coil group 23 of the stator group 2 and the extension disk 35, and the The rim 372 covers the range of the axial projection of the coil group 23 on the extension disk 35, so that the coil group 23 and the extension disk 35 can be sufficiently isolated to ensure good insulation between the coil group 23 and the extension disk 35, and Even if the coil set 23 accidentally scratches its insulating paint, it will not leak electricity to the extension plate 35. In addition, the rim 372 can be connected to one end of the side wall 371, the insulating member 37 further has a second skirt 374 connected to the other end of the side wall 371 and extending radially outward, and at the second skirt The rim 374 is provided with a plurality of positioning holes 375, and at least one of the aforementioned punching holes 353 on the first skirt 352 is formed on the surface facing the second skirt 374 to form the protrusion 354; thus, the insulating member 37 is combined with the When the disk 35 is extended, the second skirt 374 can be fitted to the first skirt 352, and the protrusion 354 can be passed through the corresponding positioning hole 375, or further, the corresponding punching hole 353 can be A locking firmware is locked at the positioning hole 375.

Please refer to FIG. 4, according to the aforementioned structure, since the motor of the present invention isolates the insulating member 37 between the magnetic member 36 and the extension plate 35, even if the motor generates a leakage phenomenon during operation, the leakage current is conducted to the magnetic member After 36, it can no longer be transmitted to the extension plate 35, so the user will not get an electric shock when touching the extension plate 35 or the bearing sleeve 31, which can ensure good safety of use; in addition, leakage can not be transmitted to the extension plate 35, It can also prevent the magnetic member 36 from generating magnetic leakage, so that the whole motor can keep running smoothly.

In addition, since the insulating member 37 has the second skirt 374, it can fit the first skirt 352 of the extension plate 35, and is locked by the protrusions 354 of the punching holes 353 on the first skirt 352 The corresponding positioning holes 375 on the second skirt 374 are fixed, so even if the insulating member 37 is not very firmly glued to the extension plate 35, when the magnetic member 36 is attracted inwardly by the stator group 2, The combination of the second skirt 374 and the first skirt 352 makes it difficult for the insulating member 37 to displace in the radial direction. Therefore, the magnetic member 36 can be maintained at a predetermined position so that the motor can maintain smooth operation.

On the other hand, since the extension disc 35 is integrally formed and connected to the outer periphery of the bearing sleeve 31, the structure formed by the extension disc 35 and the bearing sleeve 31 can not only be used to assemble the first bearing 32 and the second bearing 33. It is also available for assembling the insulating member 37 and indirectly positioning the magnetic member 36, thereby reducing motor parts and assembly steps, and having the effects of reducing manufacturing costs and improving assembly convenience and efficiency.

In addition, the motor of the present invention can be additionally connected to a wireless communication module 4 (for example, WIFI), so that the user can control the operation state of the motor through the wireless communication module 4 in a remote control, network, or cloud. Wherein, the wireless communication module 4 can be installed inside or outside the motor; in this embodiment, the wireless communication module 4 can be installed in an electrical box 5, and the electrical box 5 can be optionally combined with the mandrel 1. To enhance the protection effect of the wireless communication module 4.

Please refer to FIG. 5, which is the second embodiment of the motor of the present invention. The motor of the second embodiment of the present invention mainly selects a ring piece 341 with an upwardly raised inner edge 341a and a ring-shaped elastic pressing member 342. The ring piece 341 is fixed to the bottom end of the bearing sleeve 31 (for example, locked to the extension plate 35), and the upper and lower ends of the elastic pressing member 342 are respectively controlled by the second bearing 33 and the ring piece 341 abuts, and the raised inner edge 341a of the ring piece 341 is substantially opposite to the inner annular surface of the elastic pressing member 342, so that the elastic pressing member 342 can maintain the position at a predetermined position and firmly abut the second Bearing 33.

In addition, the motor of the second embodiment of the present invention further discloses that the extension disk 35 is directly integrally connected to the outer periphery of the bearing sleeve 31 from the radially extending portion. Therefore, the invention does not limit the shape of the extension disk 35 to be able to The principle is to connect the bearing sleeve 31 and to assemble the insulating member 37 and other components.

In addition, the insulating member 37 of this embodiment may be provided with a plurality of hot-melt pillars 376 on the surface of the second skirt 374 facing the first skirt 352; thus, when the insulating member 37 is combined with the extension plate 35, The second skirt 374 conforms to the first skirt 352 and allows each of the hot-melt columns 376 to pass through the corresponding punching holes 353, and then hot-melt each of the hot-melt columns 376 from the side of the first skirt 352, The insulating member 37 can be firmly combined with the extension plate 35. According to this, the present embodiment can also avoid the radial displacement of the insulating member 37 due to the magnetic member 36 being attracted inward by the stator group 2.

Please refer to FIG. 6, which is the third embodiment of the motor of the present invention. The motor of the third embodiment of the present invention mainly provides the outer peripheral face of the second bearing 33 at the junction of the bearing sleeve 31 and the ring piece 341 And the junction of the bearing sleeve 31 and the ring piece 341 is preferably located at the middle of the outer peripheral surface of the second bearing 33. For example, but not limited to, in this embodiment, the ring piece 341 may have a bent portion 343, and the bent portion 343 is located between the inner edge 341a and the outer edge 341b of the ring piece 341; when assembled, the ring piece The outer edge 341b of the 341 can be combined with the extension plate 35 by a locking member S, and the bent portion 343 is positioned at the bottom end of the bearing sleeve 31, so that the outer peripheral surface of the second bearing 33 is partially attached to the bent The axial extension of the folded portion 343, and the inner edge 341 a of the ring piece 341 is connected to the elastic pressing member 342, so that the elastic pressing member 342 abuts the bottom of the second bearing 33. In this way, the outer peripheral surface of the second bearing 33 can be positioned at the junction of the bearing sleeve 31 and the ring piece 341 to adjust the concentricity of the second bearing 33 and the first bearing 32.

In summary, the motor of the present invention can be isolated from the magnetic member and the extension plate by insulating members, so even if the leakage current is conducted to the magnetic member, it will not be conducted to the extension plate, so the user touches There is no electric shock when the outer surface of the rotor is used, which has the effect of improving the safety of use; in addition, the leakage of electricity cannot be conducted to the extension plate, and the magnetic member will not cause magnetic leakage, so as to achieve a smooth operation of the overall motor Effect.

Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the present invention. Anyone who is familiar with this art without departing from the spirit and scope of the present invention still makes various changes and modifications to the above-mentioned embodiments. The technical scope of the invention is protected, so the scope of protection of the present invention shall be subject to the scope defined in the appended patent application.

﹝this invention﹞

1‧‧‧mandrel

11‧‧‧First shoulder

12‧‧‧Second shoulder

13‧‧‧The stator joint

2‧‧‧Stator

21‧‧‧Insulation sleeve

22‧‧‧Iron

23‧‧‧coil set

24‧‧‧Combination ring seat

3‧‧‧Rotor set

31‧‧‧bearing sleeve

32‧‧‧First bearing

33‧‧‧Second bearing

34‧‧‧Fixed parts

341‧‧‧ring film

341a‧‧‧Inner edge

341b‧‧‧Outer edge

342‧‧‧Elastic pressure piece

343‧‧‧Bending Department

35‧‧‧Extended plate

351‧‧‧Depression

352‧‧‧First skirt

353‧‧‧Punching

354‧‧‧Projection

36‧‧‧Magnetic parts

37‧‧‧Insulation

371‧‧‧Side wall

372‧‧‧Rim

373‧‧‧Clamping space

374‧‧‧Second skirt

375‧‧‧Locating hole

376‧‧‧hot melt column

4‧‧‧Wireless communication module

5‧‧‧Electrical box

B‧‧‧Bump

S‧‧‧Lock firmware

﹝Practice﹞

9‧‧‧Motor rotor

91‧‧‧Body

92‧‧‧Magnetic parts

[Figure 1] A perspective structural view of a conventional motor rotor. [Figure 2] An exploded perspective view of the first embodiment of the present invention. [FIG. 3] An exploded perspective view of the rotor group of the first embodiment of the present invention. [Figure 4] A combined cross-sectional view of the first embodiment of the present invention. [Figure 5] A combined cross-sectional view of a second embodiment of the present invention. [Figure 6] A combined cross-sectional view of a third embodiment of the present invention.

1‧‧‧mandrel

11‧‧‧First shoulder

12‧‧‧Second shoulder

13‧‧‧The stator joint

2‧‧‧Stator

21‧‧‧Insulation sleeve

22‧‧‧Iron

23‧‧‧coil set

24‧‧‧Combination ring seat

3‧‧‧Rotor set

31‧‧‧bearing sleeve

32‧‧‧First bearing

33‧‧‧Second bearing

34‧‧‧Fixed parts

341‧‧‧ring film

342‧‧‧Elastic pressure piece

341a‧‧‧Inner edge

341b‧‧‧Outer edge

35‧‧‧Extended plate

351‧‧‧Depression

352‧‧‧First skirt

354‧‧‧Projection

36‧‧‧Magnetic parts

37‧‧‧Insulation

371‧‧‧Side wall

372‧‧‧Rim

373‧‧‧Clamping space

374‧‧‧Second skirt

4‧‧‧Wireless communication module

5‧‧‧Electrical box

S‧‧‧Lock firmware

Claims (20)

A motor includes: a mandrel; a certain sub-group, the stator group is disposed on the outer periphery of the mandrel; and a rotor group, the rotor group has a bearing sleeve and a first bearing and a bearing accommodated in the bearing sleeve A second bearing, the first bearing and the second bearing are provided on the mandrel, the rotor set has an extension disc connected to the outer periphery of the bearing sleeve, the rotor set has at least one magnetic member disposed inside the extension disc, the magnetic The piece and the extension plate are separated by an insulating piece. The motor as described in item 1 of the scope of the patent application, wherein the surface of the magnetic member away from the mandrel and the extension plate are shielded and isolated by the insulating member. The motor as described in item 1 of the patent application scope, wherein the mandrel has a first shoulder, a second shoulder and a sub-joint portion, the second shoulder portion is located at the first shoulder portion and the stator Between the parts, the stator group connects the stator joints. The motor as described in item 3 of the patent application scope, wherein the bearing sleeve and the first shoulder jointly clamp and position the first bearing, the rotor set has a fixing member disposed at the bottom end of the bearing sleeve, and the fixing member The second bearing is clamped and positioned together with the second shoulder. The motor as described in item 4 of the patent application scope, wherein the fixing member has a ring piece and an elastic pressing piece, the ring piece is fixed on the bottom end of the bearing sleeve, and the elastic pressing piece is connected to the ring piece and Abut the second bearing. The motor as described in item 5 of the patent application range, wherein the extension disk is integrally connected to the outer periphery of the bearing sleeve by a recessed portion, the ring piece is combined with the extension disk by a locking member, and the locking member is located in the recessed portion It does not protrude from the top surface of the extension plate. The motor as described in item 5 of the patent application range, wherein the ring piece is coupled to the bearing sleeve or the extension plate from one end, and the elastic pressing member sleeves the other end of the ring piece and abuts the second bearing. The motor as described in item 5 of the patent application scope, wherein the ring piece is combined with the bearing sleeve or the extension plate from the outer edge, and the inner edge of the ring piece is upturned and is located on the inner ring surface of the elastic pressing member, The upper and lower two ends of the elastic pressing piece are respectively abutted by the second bearing and the ring piece. The motor as described in item 5 of the patent application scope, wherein the outer peripheral surface of the second bearing is positioned at the junction of the bearing sleeve and the ring piece. The motor as described in item 9 of the patent application range, wherein the junction of the bearing sleeve and the ring piece is located in the middle of the outer peripheral surface of the second bearing. The motor according to item 9 of the patent application scope, wherein the ring piece has a bent portion between the inner edge and the outer edge of the ring piece, the outer edge of the ring piece is combined with the extension plate, and the bent portion Located at the bottom end of the bearing sleeve, the outer peripheral surface of the second bearing is partially attached to the axial extension of the bent portion, the inner edge of the ring piece is connected to the elastic pressing member, and the elastic pressing member resists Connect to the bottom of the second bearing. The motor as described in item 1 of the patent application scope, wherein the extension disc is integrally connected to the outer periphery of the bearing sleeve. For the motor described in item 1 of the patent application scope, another wireless communication module is connected. The motor as described in item 13 of the patent application scope, wherein the wireless communication module is provided in an electrical box. The motor as described in item 14 of the patent application scope, wherein the electrical box incorporates the mandrel. The motor according to any one of the items 1 to 15 of the patent application range, wherein the insulating member has a side wall connected to a rim, the insulating member forms a plurality of clamping spaces along the inner surface of the side wall, the The number of the magnetic pieces is several, and the magnetic pieces are respectively combined in the clamping spaces. The motor as described in item 16 of the patent application range, wherein the stator group has an insulating sleeve combined with an iron core, a coil group is wound around the insulating sleeve, the iron core and the magnetic members are radially In contrast, the rim of the insulating member is located between the coil group and the extension disk, and the rim covers the range of the axial projection of the coil group on the extension disk. The motor according to any one of claims 1 to 15, wherein the outer end of the extension disc has a first skirt, the extension disc is provided with several punching holes in the first skirt; the insulation The component has a second skirt connected to a side wall, the insulating member is provided with a plurality of positioning holes in the second skirt, at least one of the aforementioned punching holes forms a protrusion on the surface facing the second skirt; The second skirt fits the first skirt, and the protrusion extends through the corresponding positioning hole. The motor as described in item 18 of the patent application scope, wherein a locking fastener is locked at the corresponding punching hole and positioning hole. The motor according to any one of claims 1 to 15, wherein the outer end of the extension disc has a first skirt, the extension disc is provided with several punching holes in the first skirt; the insulation The piece has a second skirt connected to a side wall, the insulating member is provided with a number of hot-melt columns on the surface of the second skirt facing the first skirt; the second skirt fits the first skirt, Each of the hot-melt columns is hot-melted with corresponding punching holes.

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