TW202011665A - Permanent magnet motor guiding and assembling bracket - Google Patents

Abstract

A permanent magnet motor guiding and assembling bracket is disclosed in the present invention. The permanent magnet motor guiding and assembling bracket includes a guiding element, an engaging element and a main body element. The guiding element has a guiding surface extending from a first side to a second side. The engaging element extends from the second side, and has an engaging surface. The main body element extends from the engaging element, and has a bracket surface. An assembling tunnel penetrates through the guiding element, the guiding element and the main body element.

Description

Assembling guided permanent magnet motor bracket

The invention relates to a permanent magnet motor bracket, in particular to an assembly guide type permanent magnet motor bracket.

The motor is a device that converts electrical energy into mechanical energy. It is indispensable in daily life and also brings people a very convenient life. Among them, the motor can be divided into induction motor, synchronous motor and permanent magnet motor.

Permanent magnet motors use permanent magnets to generate the magnetic field of the motor. They do not require induction coils or induction currents. Their advantages are high efficiency, high power factor, large starting torque, low temperature rise, and simple structure. With the advent of high-performance permanent magnet materials and the rapid development of control technology, the application of permanent magnet motors is increasingly widespread.

Please refer to the first to fourth figures together, where the first figure is an exploded cross-sectional view of the prior art permanent magnet motor; the second figure is an assembled cross-sectional view of the prior art permanent magnet motor; the third figure is Another assembled cross-sectional view of the prior art permanent magnet motor is shown; and, the fourth figure is a partially enlarged view shown by circle A in the third figure. As shown in the figure, a permanent magnet motor PA1 includes a motor frame PA11, a stator structure PA12, a rotor structure PA13, a motor bracket PA14 and a bearing PA15.

The motor frame PA11 encloses an accommodating space S. The stator structure PA12 exists in the accommodating space S and is connected to the motor frame PA11. The rotor structure PA13 includes a rotor shaft core PA131 and a silicon steel sheet component PA132. The silicon steel sheet component PA132 is sleeved on the rotor shaft core PA131 and has a plurality of magnets (not shown). The magnet can be a neodymium iron boron magnet or a ferrite magnet. The motor bracket PA14 has a bracket channel PA141. The bearing PA15 is disposed in the bracket channel PA141 and has a bearing channel PA151, and the rotor shaft core PA131 of the rotor structure PA13 is passed through the bearing channel PA151. Due to the bearing PA15, when the rotor structure PA13 rotates while the permanent magnet motor PA1 is operating, the rotor shaft core PA131 and the silicon steel sheet assembly PA132 will rotate accordingly, but the motor bracket PA14 will not rotate.

During the assembly process of the permanent magnet motor PA1, the rotor structure PA13, the bearing PA15 and the motor bracket PA14 are assembled to the motor frame PA11 along an assembly direction D. Because the stator structure PA12 has a certain sub-spacing W1, and the rotor structure PA13 has a rotor width W2 smaller than the stator spacing W1, and the stator structure PA12 will generate magnetic attraction force with the magnet on the silicon steel sheet assembly PA132, unless during assembly, the rotor The structure PA13 can be maintained at the exact center of the stator structure PA12, otherwise, the magnetic attraction force generated by the magnets on the stator structure PA12 and the silicon steel sheet assembly PA132 will cause the silicon steel sheet assembly PA132 to be attracted by the magnetic attraction and be in contact with the stator structure during assembly The connection of PA12 will also cause the motor bracket PA14, bearing PA15 and rotor shaft core PA131 to shift toward the stator structure PA12, as shown in the second figure.

When the normal assembly is completed, a bracket of the motor bracket PA14 radially abuts the top surface PA142 against a frame radial of the motor frame PA11 abuts the top surface PA111, and a bracket of the motor bracket PA14 axially The abutting surface PA143 abuts against a frame axially abutting surface PA112 of the motor frame PA11, and an air gap width is formed between the rotor structure PA13 and the stator structure PA12. However, when the magnet of the silicon steel sheet assembly PA132 is connected to the stator structure PA12 by magnetic attraction, and the motor bracket PA14, the bearing PA15 and the rotor core PA131 are offset to the stator structure PA12, if the assembly continues, the motor carrier The front end face PA144 of a bracket of the rack PA14 abuts the axial face of the frame abuts the top face PA112, so that the assembly cannot be completed, as shown in the third and fourth figures.

The assembly process of the permanent magnet motor PA1 usually uses mechanical assembly, such as a hydraulic press. If the front end surface PA144 of the bracket abuts the axial direction of the frame against the top surface PA112, the operator does not find that, and continues to use mechanical hard to rotor structure PA13 If it is pushed toward the motor frame PA11, it is very likely to cause damage to the motor bracket PA14, the motor frame PA11 or even the rotor structure PA13 or the stator structure PA12.

The solution in the prior art is to adjust the motor bracket PA14 to the motor frame PA11 accurately by using artificial control and adjustment, or to insert an air gap sheet between the stator structure PA12 and the rotor structure PA13 to block the stator structure PA12 and the rotor structure PA13, After the assembly is completed, the air gap sheet is removed, but the permanent magnet motor generally weighs hundreds of kilograms. No matter which method is mentioned above, it is extremely labor-intensive and inconvenient.

In view of the fact that in the process of assembling the permanent magnet motor in the prior art, the stator structure and the rotor structure are connected due to the attraction of the magnetic attraction, resulting in various problems such as obstruction or inability to complete the assembly process. One main object of the present invention is to provide an assembled guided permanent magnet motor bracket to solve at least one problem in the prior art.

In order to solve the problems of the prior art, the present invention adopts the necessary technical means to provide an assembly guide type permanent magnet motor bracket, which is used to sleeve-assemble a rotating shaft of a permanent magnet motor rotor, and is assembled in an embedded There is a permanent magnet motor frame of a permanent magnet motor stator. The permanent magnet motor frame extends along a frame extending parallel to a central axis. An assembly ring groove is opened at one end of the permanent magnet motor frame. The assembly ring groove has an axial direction The abutting surface and a radial abutting surface, the assembled guide type permanent magnet motor bracket includes a guide element, a clamping element and a body element.

The guide element extends from a first end along the axis of a bracket to a second end, and has a guide outer cone surface extending from the first end to the second end to guide the outer cone The outer diameter of the face at the first end is smaller than the outer diameter at the second end. The clamping element extends from the guide element along the central axis of the bracket, and has a structure for clamping the radial permanent surface when the guide type permanent magnet motor bracket is assembled on the permanent magnet motor frame And the outer diameter of the engaging surface is equal to the outer diameter of the guide outer cone surface at the second end. The body element is extended and connected from the clamping element along the axial direction of the center of the bracket, and has a bracket for abutting against the axial abutment surface when the guide type permanent magnet motor bracket is assembled and assembled on the permanent magnet motor frame Put it against the top surface. Wherein, an assembly channel penetrates the guide element, the clamping element and the body element in sequence, and when the guide-type permanent magnet motor bracket is sleeved and assembled on the rotating shaft, the assembly channel is coaxial with the rotating shaft.

On the basis of the above necessary technical means, one of the subsidiary technical means derived from the present invention is to integrally form the guide element, the clamping element and the body element in the assembled guide type permanent magnet motor bracket.

On the basis of the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is that the guiding element, the clamping element and the body element in the assembled guided permanent magnet motor bracket are sequentially connected by welding.

On the basis of the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is that the guide element, the clamping element and the body element in the assembled guide type permanent magnet motor bracket are sequentially connected by a locking method .

On the basis of the above necessary technical means, one of the subsidiary technical means derived from the present invention is to assemble a plurality of locking holes in the body element of the assembled guided permanent magnet motor bracket. The locking holes are used for A plurality of corresponding locking elements are threaded so that the body element is locked to the permanent magnet motor frame.

On the basis of the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is to make the guide outer cone surface in the assembled guide type permanent magnet motor bracket have a from the first end to the second end For the guide length, the permanent magnet motor stator system has a certain sub-spacing, the permanent magnet motor rotor system has a rotor width, and the guide length is greater than half of the difference between the stator spacing and the rotor width.

On the basis of the above necessary technical means, one of the subsidiary technical means derived from the present invention is to make the guide length in the assembled guide type permanent magnet motor bracket larger than the above difference.

On the basis of the above necessary technical means, one of the subsidiary technical means derived from the present invention is that when the assembly guide type permanent magnet motor bracket is assembled on the permanent magnet motor frame, the guide outer cone surface is formed with the radial abutment surface There is an angle, and the length of the guide multiplied by the sine of the angle is greater than half of the difference.

On the basis of the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is to make the guide length in the assembled guide type permanent magnet motor bracket multiplied by the sine of the included angle larger than the difference.

As mentioned above, the present invention provides an assembly guide type permanent magnet motor bracket, which uses the guide outer cone surface of the guide element to guide and assemble the guide type permanent magnet motor bracket, so that the guide type permanent magnet motor bracket is assembled The frame will not bear against the permanent magnet motor frame and the assembly cannot be completed. The rotor of the permanent magnet motor rotor is also guided to move to the central axis of the permanent magnet motor frame, and the clamping element and the body element are clamped against the radial abutment surface and the axial abutment surface of the assembly ring groove To complete the assembly process of the permanent magnet motor.

PA1‧‧‧ permanent magnet motor

PA11‧‧‧Motor frame

PA111‧‧‧Frame abuts radially

PA112‧‧‧The frame is axially pressed against the top surface

PA12‧‧‧stator structure

PA13‧‧‧Rotor structure

PA131‧‧‧Rotor shaft core

PA132‧‧‧Silicon steel sheet components

PA14‧‧‧motor bracket

PA141‧‧‧Bracket channel

PA142‧‧‧Bracket radially abuts the top surface

PA143‧‧‧Bracket axially abuts the top surface

PA144‧‧‧Bracket front face

PA15‧‧‧bearing

PA151‧‧‧bearing channel

1‧‧‧Assemble guide type permanent magnet motor bracket

11‧‧‧Guide components

12‧‧‧Clamping components

13‧‧‧Body components

131‧‧‧Locking hole

2‧‧‧ permanent magnet motor rotor

21‧‧‧spindle

22‧‧‧Silicon steel sheet components

3‧‧‧Permanent magnet motor stator

4‧‧‧ Permanent magnet motor frame

41‧‧‧Assembly ring groove

5‧‧‧bearing

D1‧‧‧Frame extension direction

D, D2‧‧‧ Assembly direction

K‧‧‧ included angle

P1‧‧‧First end

P2‧‧‧second end

S‧‧‧accommodation space

SA‧‧‧Axial against top surface

SE‧‧‧Card interface

SG‧‧‧Guide outer cone

SR‧‧‧Radial against the top surface

T‧‧‧Assembly channel

W1‧‧‧Stator pitch

W2‧‧‧Rotor width

W3‧‧‧Total pitch

W4‧‧‧Air gap width

X‧‧‧Central axis

XB‧‧‧Bracket center axis

The first figure is an exploded cross-sectional view of the prior art permanent magnet motor; the second figure is an assembled cross-sectional view of the prior art permanent magnet motor; the third figure is another assembled cross-sectional view of the prior art permanent magnet motor; The fourth figure is a partially enlarged view shown in circle A in the third figure; the fifth figure is a perspective view showing the assembled guide type permanent magnet motor bracket provided by the preferred embodiment of the present invention; the sixth figure is a display The sectional view of the assembled guided permanent magnet motor bracket provided by the preferred embodiment of the present invention is sleeved and assembled on the rotor of the permanent magnet motor; the seventh figure shows the assembled guided permanent magnet provided by the preferred embodiment of the present invention A cross-sectional view of the motor bracket sleeve assembled on the rotor of the permanent magnet motor and assembled on the frame of the permanent magnet motor; the eighth figure shows the assembly guide type permanent magnet motor bracket sleeve assembled on the permanent magnet provided by the preferred embodiment of the present invention Another cross-sectional view of the rotor of the magnetic motor and assembled to the frame of the permanent magnet motor; the ninth figure shows a partially enlarged view of the circle B at the eighth figure; the tenth figure shows the assembly guide provided by the preferred embodiment of the present invention Partial enlarged view of the clamping surface of the permanent magnet motor bracket snapped to the radial abutment surface of the permanent magnet motor frame; and the eleventh figure shows the assembly guide type permanent magnet provided by the preferred embodiment of the present invention The bracket abutting surface of the motor bracket abuts the axial abutting surface of the permanent magnet motor frame.

Please refer to the fifth and sixth figures, wherein the fifth figure is a perspective view of the assembled guide permanent magnet motor bracket provided by the preferred embodiment of the present invention; and the sixth figure is a preferred embodiment of the present invention The assembled guide-type permanent magnet motor bracket provided in the example is a sectional view of the permanent magnet motor rotor sleeve-assembled. As shown in the figure, an assembly guide type permanent magnet motor bracket 1 is used to sleeve-assemble a rotating shaft 21 of a permanent magnet motor rotor 2 and is assembled into a permanent magnet motor with a permanent magnet motor stator 3 embedded therein The frame 4 is provided with an assembly ring groove 41 at one end opening of the permanent magnet motor frame 4, and the assembly ring groove 41 has an axial abutment surface SA (marked in the ninth figure) and a radial abutment surface SR (marked (Figure 9). The assembly guide type permanent magnet motor bracket 1 includes a guide element 11, a clamping element 12 and a body element 13.

The guiding element 11 extends from a first end P1 along a bracket central axis XB to a second end P2, and has a guiding outer cone extending from the first end P1 to the second end P2 Surface SG, the outer diameter of the guide outer cone surface SG at the first end P1 is smaller than the outer diameter at the second end P2, more specifically, the outer diameter of the guide outer cone surface SG is from the first end P1 is incremented to the second end P2.

The clamping element 12 is extended and connected from the guiding element 11 along the central axis XB of the bracket, and has a bracket for clamping when the guided permanent magnet motor bracket 1 is assembled and assembled on the permanent magnet motor frame 4 The engaging surface SE (marked in the ninth figure) radially abutting the top surface SR, and the outer diameter of the engaging surface SE is equal to the outer diameter of the second end P2.

The body element 13 is extended and connected from the clamping element 12 along the central axis XB of the bracket, and has a portion for resisting the axial direction when the guide-type permanent magnet motor bracket 1 is sleeved and assembled on the permanent magnet motor frame 4 The bracket against the top surface SA is against the top surface SB (marked in the ninth figure). Wherein, an assembly channel T penetrates the guide element 11, the clamping element 12 and the body element 13 in sequence, and when assembling the guided permanent magnet motor bracket 1 to be assembled on the rotating shaft 21, the assembly channel T is assembled with the rotating shaft 21 coaxial.

In this embodiment, the guiding element 11, the clamping element 12 and the body element 13 are integrally formed, but not limited to this, in other embodiments of the present invention, the guiding element 11, the clamping element 12 and the body element 13 Can also be connected in sequence by welding or locking.

In addition, in this embodiment, the body element 13 is provided with a plurality of locking holes 131 for the plurality of corresponding locking elements to penetrate, so as to lock the assembled guided permanent magnet motor bracket to the permanent magnet Motor frame 4.

As shown in the sixth figure, the assembly guide type permanent magnet motor bracket 1 is sleeved on the rotating shaft 21. In order to prevent the assembly guide type permanent magnet motor bracket 1 from being connected with the rotation shaft 21, the assembly guide type permanent magnet motor bracket 1 The assembly channel T of the magnetic motor bracket 1 is provided with a bearing 5 which is a ball bearing, but not limited to this. The permanent magnet motor frame 4 extends along a frame extension direction D1 parallel to a central axis X. After the assembly guide type permanent magnet motor bracket 1 is sleeved on the rotating shaft 21, it will be operated to move along an assembly direction D2 parallel to the frame extension direction D1 toward a receiving space S formed by the permanent magnet motor frame 4 , May be a manual operation of a worker or a worker using a mechanical operation, such as a hydraulic press.

The stator 3 of the permanent magnet motor is located in the accommodating space S and is embedded in the frame 4 of the permanent magnet motor, and has a certain sub-spacing W1, and the silicon steel sheet component 22 of the rotor 2 of the permanent magnet motor has a rotor width W2, in which , The rotor width W2 is smaller than the stator spacing W1. Since the center axis XB of the bracket coincides with the center axis X when the assembly is completed, the worker will try to align the center axis XB of the bracket with the center axis X as long as the rotating shaft 21 has not entered the accommodating space S, however In the assembly process, there is a great chance that the center axis XB of the bracket will deviate from the center axis X.

Please refer to the sixth to eighth figures together, wherein the seventh figure shows the assembly guide permanent magnet motor bracket provided by the preferred embodiment of the present invention is sleeve-assembled on the rotor of the permanent magnet motor and assembled on the permanent magnet A cross-sectional view of the motor frame; and, the eighth figure shows another cross-section of the assembled guide permanent magnet motor bracket provided by the preferred embodiment of the present invention, which is sleeve-assembled on the rotor of the permanent magnet motor and assembled on the permanent magnet motor frame Figure. As shown in the figure, the silicon steel sheet assembly 22 and the permanent magnet motor stator 3 generate magnetic attraction to attract each other, so that the silicon steel sheet assembly 22 and the permanent magnet motor stator 3 are connected.

Because the assembled guided permanent magnet motor bracket 1 is sleeved on the rotating shaft 21 of the permanent magnet motor rotor 2, when the silicon steel sheet assembly 22 of the permanent magnet motor rotor 2 is attracted by magnetic attraction and shifts towards the permanent magnet motor stator 3 At the same time, the rotating shaft 21 and the assembled guided permanent magnet motor bracket 1 will also be shifted toward the permanent magnet motor stator 3 together. At this time, one side of the silicon steel sheet assembly 22 will be connected to the permanent magnet motor stator 3, and the other side will generate a total spacing W3 with the permanent magnet motor stator 3. The total spacing W3 plus the rotor width W2 will be equal to the stator spacing W1.

As in the prior art, after the silicon steel sheet assembly 22 is connected to the permanent magnet motor stator 3, the permanent magnet motor rotor 2 and the assembly-guided permanent magnet motor bracket 1 will still continue to move in the assembly direction D2, as shown in the first Figure 8 shows.

Next, please refer to the eighth to eleventh figures together, where the ninth figure shows a partially enlarged view of the circle B of the eighth figure; the tenth figure shows the assembly guide provided by the preferred embodiment of the present invention Enlarged view of the clamping surface of the permanent magnet motor bracket that is clamped to the radial abutment surface of the permanent magnet motor frame; and, Figure 11 shows the assembly guide provided by the preferred embodiment of the present invention The bracket abutting surface of the permanent magnet motor bracket abuts the axial abutting surface of the permanent magnet motor frame. As shown in the figure, an opening ring groove 41 is opened at one end of the permanent magnet motor frame 4. The assembly ring groove 41 has an axial abutment surface SA and a radial abutment surface SR.

After the permanent magnet motor rotor 2 and the assembly-guided permanent magnet motor bracket 1 continue to move in the assembly direction D2, the first contact with the axial abutment surface SA and the radial abutment surface SR is the guide of the guide element 11 Lead the outer cone surface SG. Because the guide outer cone surface SG is inclined to the axial abutment surface SA, it will not be pressed against the axial abutment surface SA as in the prior art, but is guided by the guide outer cone surface SG, so that the assembly guide The permanent magnet motor bracket 1 and the permanent magnet motor rotor 2 continue to move, as shown in the ninth figure.

When the assembled guide type permanent magnet motor bracket 1 and the permanent magnet motor rotor 2 are guided by the guide outer cone surface SG and continue to move, the center axis direction XB of the assembled guide type permanent magnet motor bracket 1 is also At the same time, it continues to move toward the central axis X of the permanent magnet motor frame 4. Until the central axis XB of the bracket coincides with the central axis X, the snap surface SE of the snap element 12 will snap to the radial abutment surface SR of the assembly ring groove 41, so that the assembled guide type permanent magnet motor bracket 1 1. The permanent magnet motor rotor 2 and the permanent magnet motor frame 4 are coaxial, and the silicon steel sheet assembly 22 is detached from the permanent magnet motor stator 3, and an air gap width W4 is formed between the permanent magnet motor stator 3, as shown in the tenth figure , Where the air gap width W4 is half of the total spacing W3.

The air gap width W4 can also be regarded as the offset between the permanent magnet motor rotor 2 and the assembled guided permanent magnet motor bracket 1. In order to avoid the side of the silicon steel sheet assembly 22 being connected to the permanent magnet motor stator 3, the outer guide The conical surface SG cannot contact the axial abutment surface SA and the radial abutment surface SR, resulting in inability to guide but instead of the axial abutment surface SA as in the prior art, which prevents assembly, therefore, the outer conical surface SG is guided The guiding length from the first end P1 to the second end P2 needs to be greater than the air gap width W4.

In more detail, the guide outer cone surface SG and the radial abutment surface SR have an included angle K. The sine value of the guide length multiplied by the included angle K must be greater than the air gap width W4, because the included angle K is between 0 degrees Between 90 degrees, and the angle K can not be equal to 0 degrees or 90 degrees, so the sine value of the angle K will be between 0 and 1, and is not equal to 0 nor equal to 1, so it is a positive pure decimal. The sine value (sin) of the angle K multiplied by a positive pure decimal will be greater than the air gap width W4, so the guide length will also be greater than the air gap width W4.

After the clamping surface SE is clamped on the radial abutment surface SR, the assembled guided permanent magnet motor bracket 1 and the permanent magnet motor rotor will continue to move toward the permanent magnet motor frame 4 until the bracket of the body element 13 abuts The top surface SB abuts the axial surface of the assembly ring groove 41 against the top surface SA, and the assembly operation of the permanent magnet motor is completed, as shown in the eleventh figure. After the bracket abutting surface SB abuts the axial abutting surface SA, a locking element (not shown) may be used to penetrate the locking hole 131, so that the assembled guide type permanent magnet motor bracket 1 is fixed to The permanent magnet motor frame 4 prevents the permanent magnet motor from falling off due to rotation or vibration during the operation of the permanent magnet motor.

The sixth to eleventh figures also disclose a method for assembling a guide-type permanent magnet motor bracket, and include the following steps:

The assembly guide type permanent magnet motor bracket 1 is sleeved on the rotating shaft 21 assembled on the rotor of the permanent magnet motor 2 and is operated to move toward the permanent magnet motor frame 4 in the assembly direction D2, as shown in the sixth figure.

The permanent magnet motor rotor 2 is attracted by the magnetic attraction generated by the permanent magnet motor stator 3 embedded in the permanent magnet motor frame 4, and is connected to the permanent magnet motor stator 3, as shown in the seventh figure.

The assembled guided permanent magnet motor bracket 1 and the permanent magnet motor rotor 2 are continuously operated to move toward the permanent magnet motor frame 4 and are guided by the guide element 11 of the assembled guided permanent magnet motor bracket 1 The conical surface SG is guided as shown in the eighth and ninth figures.

Guided by the guide outer cone surface SG of the guide element 11, the assembled guide type permanent magnet motor bracket 1 and the permanent magnet motor rotor 2 are continuously operated to move toward the permanent magnet motor frame 4 and make the snap element 12 The clamping surface is clamped on the radial abutting surface SR, as shown in the tenth figure. The bracket abutting surface SB of the body element 13 is pressed against the axial abutting surface SA to complete the assembling method of the assembling guide type permanent magnet motor bracket, as shown in FIG. 11.

In summary, the assembled guided permanent magnet motor bracket provided by the present invention utilizes the guide outer cone surface, so that the assembled guided permanent magnet motor bracket will not bear against the permanent magnet motor before the assembly is not completed The frame, on the contrary, uses the guide of the outer cone surface, so that the assembled guided permanent magnet motor bracket continues to move toward the permanent magnet motor frame until the clamping surface snaps against the radial against the top surface, and the bracket The abutment surface abuts the axial abutment surface to complete the assembly process of the permanent magnet motor.

Compared with the prior art, during the assembly process of the assembled guided permanent magnet motor bracket provided by the present invention, no manual adjustment or insertion of the air gap sheet is required, and the guide outer cone surface, the clamping surface and the bracket are used The assembly process of the permanent magnet motor can be completed by touching the top surface.

With the above detailed description of the preferred embodiments, it is hoped that the features and spirit of the present invention can be described more clearly, rather than limiting the scope of the present invention with the preferred embodiments disclosed above. On the contrary, the purpose is to cover various changes and equivalent arrangements within the scope of the patent application of the present invention.

1‧‧‧Assemble guide type permanent magnet motor bracket

11‧‧‧Guide components

12‧‧‧Clamping components

13‧‧‧Body components

2‧‧‧ permanent magnet motor rotor

21‧‧‧spindle

22‧‧‧Silicon steel sheet components

3‧‧‧Permanent magnet motor stator

4‧‧‧ Permanent magnet motor frame

41‧‧‧Assembly ring groove

5‧‧‧bearing

X‧‧‧Central axis

XB‧‧‧Bracket center axis

Claims (9)

An assembly guide type permanent magnet motor bracket is used to sleeve-assemble a rotating shaft of a permanent magnet motor rotor, and is assembled in a permanent magnet motor frame with a permanent magnet motor stator embedded therein. Along an extension of the frame parallel to a central axis, an assembly ring groove is opened at one end opening of the permanent magnet motor frame, the assembly ring groove has an axial abutment surface and a radial abutment surface, the assembly guide The guided permanent magnet motor bracket includes: a guide element extending from a first end along an axis of the bracket to a second end, and having a extending from the first end to the second end The outer tapered surface of the guide portion, the outer diameter of the outer guide tapered surface at the first end is smaller than the outer diameter at the second end; The guiding element is extended and connected, and has a clamping surface for clamping on the radial abutting surface when the assembly guide type permanent magnet motor bracket is sleeved and assembled on the permanent magnet motor frame, and the clamping The outer diameter of the surface is equal to the outer diameter of the guide outer conical surface at the second end; and a body element is extended and connected from the clamping element along the central axis of the bracket, and has a An assembly guide type permanent magnet motor bracket is sleeved and assembled on the permanent magnet motor frame when the bracket abuts the top surface of the axial abutment surface; wherein, an assembly channel sequentially penetrates the guide element, the The clamping element and the body element, and when the assembly guide type permanent magnet motor bracket is sleeved and assembled on the rotating shaft, the assembly channel is coaxial with the rotating shaft. The assembled guided permanent magnet motor bracket as described in item 1 of the patent application scope, wherein the guiding element, the clamping element and the body element are integrally formed. The assembled guided permanent magnet motor bracket as described in item 1 of the patent application scope, wherein the guiding element, the clamping element and the body element are sequentially connected by welding. The assembly guide type permanent magnet motor bracket as described in item 1 of the patent application scope, wherein the guide element, the clamping element and the body element are sequentially connected by a locking method. The assembled guided permanent magnet motor bracket as described in item 1 of the patent application scope, wherein the body element is provided with a plurality of locking holes, and the locking holes are used to provide a plurality of corresponding locking elements Through it, the body element is locked to the permanent magnet motor frame. The assembled guided permanent magnet motor bracket as described in item 1 of the patent application scope, wherein the guiding outer cone surface has a guiding length from the first end to the second end, the permanent magnet The motor stator system has a certain sub-spacing, the permanent magnet motor rotor system has a rotor width, and the guide length is greater than half the difference between the stator spacing and the rotor width. The assembled guided permanent magnet motor bracket as described in item 6 of the patent application scope, wherein the guide length is greater than the difference. The assembled guided permanent magnet motor bracket as described in item 6 of the patent application scope, wherein, when the assembled guided permanent magnet motor bracket is assembled to the permanent magnet motor frame, the guiding outer cone surface is The radial abutment surface forms an angle, and the guide length multiplied by the sine of the angle is greater than half of the difference. The assembled guided permanent magnet motor bracket as described in item 8 of the patent application scope, wherein the guide length is multiplied by the sine of the included angle to be greater than the difference.

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