TWI840195B - Motor testing mechanism, rotor, and motor - Google Patents

Abstract

The present invention discloses a motor testing mechanism, rotor, and motor. The rotor comprises a rotor body, end member, and a motor shaft. The rotor body has a shaft hole. The end member has internal threaded holes and a plurality of clamping components. One end of each clamping component is connected to the end member, and the plurality of clamping components is spaced apart from each other on the end member. One end of the motor shaft has a thread, and the motor shaft has an outer diameter variation section. During the locking process of the thread of the motor shaft and the internal threaded hole of the end member, the outer diameter variation section of the motor shaft will push against the plurality of clamping components, and each clamping component will abut against the inner wall surface of the shaft hole of the rotor body. When the thread of the motor shaft is fixedly locked with the internal threaded hole, the motor shaft will be fixedly secured to the rotor body through the plurality of clamping components.

Description

Motor testing machine, rotor and motor

The present invention relates to a motor testing mechanism, a rotor and a motor, and in particular to a motor testing mechanism, a rotor and a motor which are convenient for researchers to test the motor.

During the motor development process, the rotor and stator usually need to be adjusted repeatedly. In the prior art, when the relevant personnel want to test the motor, the relevant personnel fix the stator on the test machine in an interference manner. In this way, the stator is easily damaged during the disassembly and assembly process, and the relevant personnel must spend a lot of time to disassemble and assemble the stator. In addition, in the prior art, during the test of the motor, the rotor's spindle and the rotor body (usually made of silica) are prone to slippage, and the rotor spindle and the rotor body are mostly fixed in an interference manner. With such a design, the spindle and the rotor body are also prone to damage during the disassembly and assembly process.

The present invention discloses a motor testing mechanism, which is mainly used to improve the existing related testing mechanism. The stator is fixed in the testing mechanism by interference. With such a design, the stator is easily damaged during the disassembly and assembly process and a lot of time is required. The present invention discloses a rotor and a motor, which are mainly used to improve the rotor of the existing motor. The spindle and the rotor body included in the rotor are fixed by interference. With such a design, the spindle is easily damaged during the disassembly and assembly process and a lot of time is required.

One embodiment of the present invention discloses a rotor, which includes a spindle, a rotor body, and an auxiliary fixing assembly. The two ends of the spindle are respectively defined as a locking end and a pivot end. The spindle has a thread at the locking end, and the spindle has an outer diameter variation section. The outer diameter variation section is arranged adjacent to the thread. The outer diameter of the spindle in the outer diameter variation section gradually increases from the locking end to the pivot end. The rotor body has a spindle through hole. The auxiliary fixing assembly includes an end member and a plurality of clamping members. The end member includes an inner screw hole. One end of the plurality of clamping members is connected to the end member. The plurality of clamping members are connected to the end member at intervals. , and a plurality of clamping members are arranged around the outer circumference of the inner screw hole; the inner side of each clamping member has a guide surface, and the shape of an outer side surface of each clamping member corresponds to the shape of at least a portion of an inner wall surface of the spindle through-hole; wherein, when the thread of the spindle and the inner screw hole are locked with each other, the guide surfaces of the plurality of clamping members abut against the outer circumference of the outer diameter variation section of the spindle, the outer side surfaces of each clamping member abut against the inner wall surface, and the spindle is tightly engaged with the rotor body through the plurality of clamping members.

One embodiment of the present invention discloses a motor, which includes a stator and a rotor of the present invention.

One embodiment of the present invention discloses a motor testing mechanism, which is used to test a motor. The motor includes a stator and a rotor of the present invention. The motor testing mechanism includes: a base, an encoder module, a first plate, a second plate and an intermediate component. The encoder module includes an encoder; one end of a first plate is detachably arranged on a base, and an encoder module is arranged on one side of the first plate; the first plate has a first through hole, a first hinge is arranged on the first through hole, and a first receiving groove is arranged on one side of the first plate; one end of a second plate is detachably arranged on the base, the second plate has a second through hole, a second hinge is arranged on the second through hole, and a second receiving groove is arranged on one side of the second plate; the middle assembly includes a middle plate body and a locking member, the middle plate body is connected to the first plate body and the second plate body through a plurality of fixing members, and the middle plate body is located The invention relates to a rotor assembly comprising a first plate and a second plate; the middle plate body has a stator accommodating hole, the stator accommodating hole passes through the middle plate body, the middle plate body has a gap, the gap divides the middle plate body into two arms, the two arms respectively have a locking hole, the locking piece is used to cooperate with the two locking holes to be fixed to the middle plate body; in the process of mutual locking of the locking piece and the middle plate body, the two arms located on both sides of the gap will move in a direction close to each other, and the aperture of the stator accommodating hole will be reduced; wherein, the first hinge of the first plate member and the second hinge of the second plate member are respectively used to connect with the two ends of the rotor, and the middle assembly is used to fix the stator.

In summary, the rotor of the present invention allows the relevant personnel to quickly disassemble and assemble the rotor body and the spindle, and the rotor body and the spindle are not easily damaged during the disassembly and assembly process. The motor test mechanism of the present invention, through the design of the first plate, the second plate, the intermediate assembly, etc., especially the design of the intermediate plate and the locking piece included in the intermediate assembly, allows the relevant R&D personnel to quickly and conveniently install the motor in the motor test mechanism, and also quickly and conveniently remove the motor from the motor test mechanism, and the motor is not easily damaged during the disassembly and assembly process.

To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, such description and drawings are only used to illustrate the present invention and do not limit the protection scope of the present invention.

In the following description, if it is indicated to refer to a specific figure or as shown in a specific figure, it is only used to emphasize that most of the relevant content described in the subsequent description appears in the specific figure, but it does not limit the subsequent description to only refer to the specific figure.

Please refer to Figures 1 to 4 together. Figure 1 is a schematic diagram of the motor testing mechanism of the present invention provided with a motor, Figure 2 is a schematic diagram of the motor testing mechanism of the present invention and the motor being exploded, Figure 3 is a schematic diagram of the motor testing mechanism of the present invention provided with a motor in cross section, and Figure 4 is a schematic diagram of the middle plate, fixing member and stator of the motor testing mechanism of the present invention being exploded.

The motor testing mechanism 100 of the present invention is used to test the motor 200 of the present invention. The motor 200 includes a stator 21 and a rotor 22. Of course, the motor testing mechanism 100 of the present invention can also test a general motor. It should be noted that the motor 200 and the rotor 22 of the present invention can be manufactured, implemented or sold separately.

The motor testing mechanism 100 includes: a base 11, an encoder module 12, a first plate 13, a second plate 14, a plurality of fixing members 15 and an intermediate component 16. The encoder module 12 includes an encoder. The function of the encoder is the same as known, and will not be described again.

In one embodiment, the encoder module 12 may be a magnetic encoder, and the encoder module 12 may further include a fixing base 121, an electronic module 122, a magnetic fixing base 123, a sensing magnet 124, and a fixing member 125. The fixing base 121 is detachably fixed (e.g., by screws) to one side of the first plate 13. The electronic module 122 includes electronic components (e.g., circuit boards, microprocessors, etc.) included in conventional magnetic encoders, and the electronic module 122 is detachably fixed (e.g., by screws) to the fixing base 121. The magnet fixing seat 123 is used to be locked to a locking hole 2213 (as shown in FIG. 7 ) of an end member 2231 of the rotor 22 through a fixing member 125 . The sensing magnet 124 is disposed (eg, engaged) on the magnet fixing seat 123 .

One end of the first plate 13 is detachably mounted on the base 11 (e.g., by screws). An encoder module 12 is mounted on one side of the first plate 13. The first plate 13 has a first through hole 131, which passes through the first plate 13. The first plate 13 has a first pivot 163 mounted on the first through hole 131. The first pivot 163 is, for example, a bearing of various types.

One end of the second plate 14 is detachably mounted on the base 11 (eg, by screws). The second plate 14 has a second through hole 141, which passes through the second plate 14. The second plate 14 has a second pivot 164 disposed in the second through hole 141. The second pivot 164 is, for example, a bearing of various types.

The first pivot 163 of the first plate 13 and the second pivot 164 of the second plate 14 are mainly used to connect with the two ends of the rotor 22, and the rotor 22 can rotate relative to the first plate 13 and the second plate 14 through the first pivot 163 and the second pivot 164. The appearance and size of the first plate 13 and the second plate 14 are not limited to those shown in the figure. As shown in FIG3, in the embodiment of the motor testing mechanism 100 testing the motor 200 of the present invention, the first pivot 163 can be pivoted with the end member 2231 of the rotor 22, and the second pivot 164 can be pivoted with the axle 221 of the rotor 22.

As shown in FIG. 2 , the middle assembly 16 includes a middle plate 161 and a locking member 162. The middle plate 161 is connected to the first plate 13 and the second plate 14 through a plurality of fixing members 15, and the middle plate 161 is located between the first plate 13 and the second plate 14. Each fixing member 15 is, for example, a screw, but is not limited thereto. Specifically, the first plate 13, the second plate 14, and the middle plate 161 may include a plurality of first fixing holes 133, a plurality of second fixing holes 143, and a plurality of third fixing holes 1614, respectively, and the plurality of fixing members 15 may correspond to and cooperate with the plurality of first fixing holes 133, the plurality of second fixing holes 143, and the plurality of third fixing holes 1614, so that the first plate 13, the second plate 14, and the middle plate 161 are fixed to each other.

The middle plate 161 has a stator receiving hole 1611, which passes through the middle plate 161. The middle plate 161 has a gap 1612, which divides the middle plate 161 into two arms 1613. The two arms 1613 each have a locking hole 16131. The locking member 162 is used to cooperate with the two locking holes 16131 to be fixed to the middle plate 161.

During the process of the locking piece 162 and the middle plate 161 being locked to each other, the two arms 1613 located on both sides of the gap 1612 will be driven by the locking piece 162 to move toward each other, and the diameter of the stator receiving hole 1611 will be reduced, thereby the stator 21 located in the stator receiving hole 1611 will be held by the middle plate 161. Through the above design, the relevant personnel can quickly and easily fix the stator 21 in the middle plate 161, and the stator 21 is basically not easily damaged whether it is in the process of being installed in the middle plate 161 or in the process of being removed from the middle plate 161.

In addition, by providing the middle plate 161 with a gap 1612 and cooperating with the locking member 162 to fix the stator 21, the stator 21 can be effectively prevented from slipping during the operation of the motor 200.

As shown in Figures 2 to 4, in one of the preferred embodiments, the first plate 13 may also have a first limiting structure 134 on the side opposite to the encoder module 12, the second plate 14 has a second limiting structure 144 on the side facing the middle assembly 16, and the two sides of the middle plate body 161 have a third limiting structure 1615 and a fourth limiting structure 1616 respectively. When the first plate 13, the middle plate body 161 and the second plate 14 are fixed to each other by multiple fixing members 15, the first limiting structure 134 and the third limiting structure 1615 are mutually engaged, and the second limiting structure 144 and the fourth limiting structure 1616 are mutually engaged. Through the design of the first limiting structure 134, the second limiting structure 144, the third limiting structure 1615 and the fourth limiting structure 1616, when the first limiting structure 134 and the third limiting structure 1615 are engaged with each other, all the first fixing holes 133 of the first plate 13 will be interconnected with all the third fixing holes 1614; similarly, when the second limiting structure 144 and the fourth limiting structure 1616 are engaged with each other, all the second fixing holes 143 of the second plate 14 will be interconnected with all the third fixing holes 1614, thereby, relevant personnel can simply and quickly make multiple fixing members 15 pass through multiple first fixing holes 133, multiple second fixing holes 143 and multiple third fixing holes 1614. It should be noted that the specific appearance, structure and location of the first limiting structure 134, the second limiting structure 144, the third limiting structure 1615 and the fourth limiting structure 1616 are not limited to those shown in the figures.

As shown in FIG. 3 , in one preferred embodiment, a first receiving groove 132 is provided on one side of the first plate 13, and a second receiving groove 142 is provided on one side of the second plate 14. When the first plate 13, the middle plate 161, and the second plate 14 are fixed to each other by a plurality of fixing members 15, the first receiving groove 132 and the second receiving groove 142 are used to accommodate a portion of the stator 21 and a portion of the rotor 22 held by the middle assembly 16. In practical applications, the size of the first receiving groove 132 and the size of the second receiving groove 142 can be designed according to the needs of the user, so that the first plate 13, the second plate 14, and the middle plate 161 can accommodate motors 200 of different sizes together.

Please refer to Figures 5 to 8 together. Figures 5 and 6 are respectively exploded schematic diagrams of the rotor of the present invention from different viewing angles, Figure 7 is a partial cross-sectional schematic diagram of the core shaft, end member and rotor body of the rotor of the present invention, and Figure 8 is a cross-sectional schematic diagram of the rotor of the present invention.

The rotor 22 of the present invention comprises a spindle 221, a rotor body 222 and an auxiliary fixing assembly 223. The two ends of the spindle 221 are respectively defined as a locking end 221A and a pivot end 221B. The spindle 221 has a thread 2211 at the locking end 221A, and the spindle 221 has an outer diameter changing section 2212, and the outer diameter of the spindle 221 in the outer diameter changing section 2212 gradually increases from the locking end 221A to the pivot end 221B.

The rotor body 222 has a mandrel through hole 2221. The mandrel through hole 2221 is set through the rotor body 222. The mandrel through hole 2221 is used to provide a part of the mandrel 221 and a part of the auxiliary fixing component 223 to pass through. The rotor body 222 can be made of silica, for example, and the rotor body 222 can be provided with a plurality of permanent magnets, while the stator 21 is a unit having a plurality of coils wound thereon.

The auxiliary fixing assembly 223 includes an end member 2231 and a plurality of clamping members 2232. The end member 2231 includes an inner screw hole 22311 and a plurality of assembly structures 22312. The plurality of assembly structures 22312 are arranged around the outer periphery of the inner screw hole 22311. One end of each clamping member 2232 has a snap-fitting portion 22321, and each snap-fitting portion 22321 is used to snap-fit with one of the assembly structures 22312. In practical applications, each assembly structure 22312 can be, for example, a snap-fitting groove formed by an inward concave portion on one side of the end member 2231, and the shape of the snap-fitting portion 22321 at one end of each clamping member 2232 roughly corresponds to the shape of the snap-fitting groove.

After each clamping member 2232 is engaged with one of the assembly structures 22312 through the engaging portion 22321, a gap S (as shown in FIG. 7 ) exists between each engaging portion 22321 and the assembly structure 22312, and the clamping member 2232 can swing relative to the end member 2231. It should be particularly emphasized that the gap S referred to here is used to allow the clamping member 2232 to swing relative to the end member 2231 under the action of an external force, and the gap S is not the tolerance generated during the production of the clamping member 2232 and the end member 2231.

The plurality of clamping members 2232 disposed on the end member 2231 are disposed around the outer periphery of the inner screw hole 22311, and the plurality of clamping members 2232 are disposed at intervals from each other. The number of the clamping members 2232 and the intervals therebetween can be designed according to actual needs and are not limited to those shown in the figure.

Each clamping member 2232 has a guide surface 22322 on an inner side, and the shape of an outer side surface of each clamping member 2232 corresponds to the shape of at least a section of an inner wall surface 22211 of the spindle through hole 2221 of the rotor body 222. The thickness of each clamping member 2232 gradually decreases from one end where each clamping member 2232 is connected to the end member 2231 to the other end. As shown in FIG. 7 , preferably, in a cross section, an inclination angle θ of the side line of the outer diameter change section 2212 of the spindle 221 can be between 0.5 and 10 degrees, and the normal direction of the cross section is perpendicular to a central axis direction of the spindle. The design of the tilt angle θ can be changed according to the material of the clamping member 2232, and is not limited here.

As shown in FIGS. 6 to 8 , in actual application, the rotor 22 may be assembled as follows: first, multiple clamping members 2232 of the end member 2231 are placed in the spindle through-hole 2221 of the rotor body 222, and the outer side of each clamping member 2232 faces the inner wall surface 22211 of the spindle through-hole 2221 of the end member 2231; then, the thread 2211 of the locking end 221A of the spindle 221 passes through the spindle through-hole 2221 of the rotor body 222, and is locked with the inner thread hole 22311 of the end member 2231.

When the thread 2211 of the spindle 221 and the inner threaded hole 22311 of the end member 2231 are locked with each other, the outer diameter changing section 2212 of the spindle 221 will abut against the guide surfaces 22322 of the plurality of clamping members 2232, causing each guide surface 22322 to swing toward the inner wall surface 22211 of the spindle through hole 2221 of the rotor body 222.

As shown in FIG8 , when the thread 2211 of the central shaft 221 is completely locked with the inner threaded hole 22311 of the end member 2231, the guide surfaces 22322 of the plurality of clamping members 2232 will abut against the outer periphery of the outer diameter changing section 2212 of the central shaft 221, and the outer side of each clamping member 2232 will be tightly pressed against the inner wall surface 22211 of the rotor body 222 due to the abutment of the outer diameter changing section 2212 of the central shaft 221, and the central shaft 221 can be stably engaged with the rotor body 222 through the plurality of clamping members 2232.

In short, when the thread 2211 of the central shaft 221 and the inner threaded hole 22311 of the end member 2231 are locked with each other, the outer diameter variation section 2212 of the central shaft 221 will be stably connected to the rotor body 222 in a manner similar to a tight fit through the clamping member 2232. With such a design, during the operation of the rotor 22, the rotor 22 and the central shaft 221 will not easily rotate relative to each other (i.e., similar to a slipping situation).

During the development of the motor, when the relevant R&D personnel want to modify the rotor, they basically modify the rotor body of the rotor. Therefore, during the development process, the R&D personnel may need to repeatedly disassemble and assemble the spindle and the rotor body. In the prior art, the rotor body and the spindle are mostly fixed by interference. Therefore, the R&D personnel must spend a lot of time to disassemble and assemble the rotor body and the spindle. Moreover, during the installation of the rotor body and the spindle, the R&D personnel also need to carefully align the rotor body and the spindle to ensure that the spindle and the rotor body can rotate on the same axis when the rotor is running. In addition, in the prior art, because the spindle and the rotor body are fixed to each other in an interference manner, the spindle or the rotor body is easily damaged during the disassembly and assembly process.

On the other hand, the rotor 22 of the present invention can allow relevant personnel to quickly and easily disassemble and assemble the spindle 221 and the rotor body 222 through the internal threaded hole 22311 of the end member 2231, multiple clamping members 2232, the outer diameter variation section 2212 of the spindle 221, and the thread 2211 of the spindle 221, and during the disassembly and assembly process, the spindle 221 and the rotor body 222 are not easily damaged. Moreover, since the central shaft 221 is locked with the inner threaded hole 22311 of the end member 2231 through the thread 2211, and the central shaft 221 cooperates with multiple clamping members 2232 through the outer diameter change section 2212 to engage with the rotor body 222, therefore, as long as the thread 2211 of the central shaft 221 is correctly locked with the inner threaded hole 22311, it can be ensured that when the rotor 22 rotates, the central shaft 221 and the rotor body 222 rotate around approximately the same central axis.

In actual application, by making each clamping member 2232 detachably connected to the end member 2231, relevant R&D personnel can replace multiple different clamping members 2232 to connect the same central shaft 221 to different rotor bodies 222. Such a design can effectively reduce the R&D cost, and relevant R&D personnel can quickly and conveniently complete the preliminary work of testing another rotor body 222 (i.e., fixing the rotor body 222, the central shaft 221 and the end member 2231 to each other).

Please refer to Fig. 9, which is a schematic diagram of an exploded view of another embodiment of the rotor of the present invention. The biggest difference between this embodiment and the aforementioned embodiment is that the end member 2231 and the plurality of clamping members 2232 of this embodiment are integrally formed, and there is at least one groove around the position where the end member 2231 and each clamping member 2232 are connected, and the depth of the groove is not less than 0.2 mm.

More specifically, the end member 2231 may have an inner annular groove 22313 and an outer annular groove 22314, wherein the inner annular groove 22313 is formed by interconnecting grooves located on the inner side of each clamping member 2232, and the outer annular groove 22314 is formed by interconnecting grooves located on the outer side of each clamping member 2232. Through the design of the inner annular groove 22313 and the outer annular groove 22314, when the spindle 221 and the end member 2231 are locked together, each clamping member 2232 will be relatively easy to swing toward the rotor body 222 relative to the end member 2231.

It should be noted that, in this embodiment, the end member 2231 is taken as an example in which the end member 2231 has both the inner annular groove 22313 and the outer annular groove 22314. However, in different embodiments, the end member 2231 may include only the inner annular groove 22313 or only the outer annular groove 22314. In different embodiments, the grooves of the end member 2231 around each clamping member 2232 may not be interconnected with other surrounding grooves.

In summary, the motor testing mechanism of the present invention can allow relevant personnel to quickly install and disassemble the rotor and stator of the motor through the design of the first plate, the second plate, the middle plate, etc., and the rotor and the stator are not easily damaged during the disassembly process. In contrast, in the prior art, the relevant testing mechanism is fixed to the stator in an interference manner, so that the stator is not only troublesome but also easily damaged during the disassembly process. The rotor and motor of the present invention, through the design of the spindle with threads and the end member with internal screw holes, in conjunction with a plurality of clamping members, can allow the spindle and the end member to be fixed to each other, and the spindle can be more closely connected to the rotor body through the clamping members. In this way, during the rotation of the rotor, the kinetic energy of the spindle rotation can be effectively transmitted to the rotor body, and the spindle and the rotor body are not prone to relative rotation.

The above description is only the preferred feasible embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the contents of the specification and drawings of the present invention are included in the protection scope of the present invention.

100: Motor test mechanism 11: Base 12: Encoder module 121: Fixing seat 122: Electronic module 123: Magnet fixing seat 124: Sensing magnet 125: Fixing member 13: First plate 131: First through hole 132: First receiving groove 133: First fixing hole 134: First limiting structure 14: Second plate 141: Second through hole 142: Second receiving groove 143: Second fixing hole 144: Second limiting structure 15: Fixing member 16: Middle assembly 161: Middle plate 1611: Stator receiving hole 1612: Gap 1613: Arm 16131: Locking hole 1614: Third fixing hole 1615: Third limit structure 1616: Fourth limit structure 162: Locking piece 163: First pivot piece 164: Second pivot piece 200: Motor 21: Stator 22: Rotor 221: Spindle 221A: Locking end 221B: Pivot end 2211: Thread 2212: Outer diameter variation section 2213: Locking hole 222: Rotor body 2221: Spindle through hole 22211: Inner wall surface 223: Auxiliary fixing assembly 2231: End member 22311: Inner screw hole 22312: Assembly structure 22313: Inner annular groove 22314: Outer annular groove 2232: Clamping member 22321: Clamping part 22322: Guide surface S: Gap θ: Tilt angle

FIG. 1 is a schematic diagram of a motor test mechanism of the present invention provided with a motor.

FIG. 2 is an exploded schematic diagram of the motor testing mechanism and the motor of the present invention.

FIG3 is a cross-sectional view of a motor test mechanism of the present invention provided with a motor.

FIG. 4 is an exploded schematic diagram of the middle plate, the fixing member and the stator of the motor testing mechanism of the present invention.

FIG. 5 and FIG. 6 are respectively exploded schematic diagrams of the rotor of the present invention from different viewing angles.

FIG. 7 is a partial cross-sectional schematic diagram of the axle, end member and rotor body of the rotor of the present invention.

FIG8 is a schematic cross-sectional view of the rotor of the present invention.

FIG. 9 is an exploded schematic diagram of another embodiment of the rotor of the present invention.

100: Motor testing agency

12: Encoder module

121: Fixed seat

122: Electronic module

123:Magnetic fixing seat

124:Sensing magnet

125:Fixer

13: First plate

132: First tank

134: First limit structure

14: Second plate

142: Second tank

144: Second limit structure

15: Fixing parts

16: Intermediate components

161: Middle plate

1615: The third limiting structure

1616: The fourth limiting structure

162: Lock firmware

163: First joint

164: Second hinge

200: Motor

21: Stator

22: Rotor

221: Axis

2231: End member

Claims (10)

A rotor, comprising: a spindle, whose two ends are respectively defined as a locking end and a pivot end, the spindle having a thread at the locking end, the spindle having an outer diameter variation section, the outer diameter variation section being arranged adjacent to the thread, the outer diameter of the spindle in the outer diameter variation section gradually increasing from the locking end to the pivot end; a rotor body, having a spindle through hole; An auxiliary fixing assembly, comprising an end member and a plurality of clamping members, the end member comprising an inner screw hole, one end of a plurality of the clamping members being connected to the end member, a plurality of the clamping members being connected to the end member at intervals, and a plurality of the clamping members being arranged around the periphery of the inner screw hole; the inner side of each of the clamping members having a guide surface, the shape of an outer side surface of each of the clamping members corresponding to the shape of at least a portion of an inner wall surface of the spindle through-hole; Wherein, when the thread of the spindle and the inner screw hole are locked with each other, the guide surfaces of the plurality of clamping members abut against the outer periphery of the outer diameter variation section of the spindle, the outer side surface of each clamping member abuts against the inner wall surface, and the spindle is tightly engaged with the rotor body through the plurality of clamping members. A rotor as described in claim 1, wherein the end member includes a plurality of assembly structures, and the plurality of assembly structures are arranged around the outer circumference of the inner screw hole; one end of each of the clamping members has a clamping portion, and each of the clamping portions is used to engage with one of the assembly structures; after each of the clamping members engages with one of the assembly structures through the clamping portion, a gap exists between each of the clamping portions and the assembly structure, and the clamping member can swing relative to the end member. A rotor as described in claim 1, wherein the thickness of each of the clamping members gradually decreases from one end where each of the clamping members is connected to the end member to the other end; in a cross section, an inclination angle of the edge line of the outer diameter change section of the spindle is between 0.5 and 10 degrees, and the normal direction of the cross section is perpendicular to a central axis direction of the spindle. A rotor as described in claim 1, wherein the end member and the plurality of clamping members are integrally formed, and there is at least one groove around the position where the end member is connected to each of the clamping members, and the depth of the groove is not less than 0.2 mm. A rotor as described in claim 4, wherein the end member has at least one of an inner annular groove and an outer annular groove, the inner annular groove is formed by a plurality of grooves adjacent to the inner side of each of the clamping members being interconnected, and the outer annular groove is formed by a plurality of grooves adjacent to the outer side of each of the clamping members being interconnected. A rotor as described in claim 1, wherein the end member has a lock hole at an end opposite to the end where the multiple clamping members are arranged, and the lock hole is used to lock with a magnetic fixing base of an encoder module. A motor comprising: a rotor and a stator as described in any one of claims 1 to 6. A motor testing mechanism for testing a motor, the motor comprising a stator and a rotor as described in any one of claims 1 to 6, the motor testing mechanism comprising: a base; an encoder module comprising an encoder; a first plate, one end of which is detachably disposed on the base, the encoder module being disposed on one side of the first plate; the first plate having a first through hole, a first hinge being disposed in the first through hole of the first plate, and a first receiving groove being disposed on one side of the first plate; a second plate, one end of which is detachably disposed on the base, the second plate having a second through hole, a second hinge being disposed in the second through hole of the second plate, and a second receiving groove being disposed on one side of the second plate; An intermediate component, comprising an intermediate plate and a locking piece, wherein the intermediate plate is connected to the first plate and the second plate through a plurality of fixing pieces, and the intermediate plate is located between the first plate and the second plate; the intermediate plate has a stator accommodating hole, the stator accommodating hole penetrates the intermediate plate, the intermediate plate has a gap, the gap divides the intermediate plate into two arms, the two arms respectively have a locking hole, the locking piece is used to cooperate with the two locking holes to be fixed to the intermediate plate; in the process of the locking piece and the intermediate plate being locked to each other, the two arms located on both sides of the gap will move in a direction close to each other, and the diameter of the stator accommodating hole will be reduced; The first hinge of the first plate and the second hinge of the second plate are respectively used to connect to the two ends of the rotor, and the intermediate component is used to fix the stator. A motor testing mechanism as described in claim 8, wherein the first plate has a first limiting structure on a side opposite to where the encoder module is arranged, the second plate has a second limiting structure on a side facing the intermediate assembly, and the two sides of the intermediate plate have a third limiting structure and a fourth limiting structure respectively. When the first plate, the intermediate plate and the second plate are fixed to each other by a plurality of the fixing members, the first limiting structure and the third limiting structure are engaged with each other, and the second limiting structure and the fourth limiting structure are engaged with each other; one side of the first plate has a first containing groove, and one side of the second plate has a second containing groove. When the first plate, the intermediate plate and the second plate are fixed to each other by a plurality of the fixing members, the first containing groove and the second containing groove are used to accommodate a part of the stator and a part of the rotor held by the intermediate assembly. The motor testing mechanism as described in claim 8, wherein the encoder module further includes a magnet fixing base and a sensing magnet, the magnet fixing base is used to be locked to one end of the rotor through a fixing member, and the sensing magnet is arranged on the magnet fixing base.

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