A response performance optimization device based on a brushless DC motor and its application method

Abstract

The present invention provides a response performance optimization device based on a brushless DC motor and an application method thereof, which relates to the technical field of motors. The optimization device comprises: a motor body, a stator and a rotor structure; the rotor structure comprises: a first rotating shaft, the first rotating shaft passes through the motor body, and one end of the first rotating shaft is arranged in the middle of the stator; and a rotating shaft adjustment component, the rotating shaft adjustment component is installed at one end of the motor body, and the power input end of the rotating shaft adjustment component is connected to the other end of the first rotating shaft, so that the external shaft whose central axis deviates from the first rotating shaft is connected to the power output end of the rotating shaft adjustment component, and is driven by a step-down voltage. The optimization structure and application method provided by the present invention can realize fine-tuning of the axial connection direction when the external shaft is connected to the rotor shaft, thereby ensuring the transmission efficiency, and can also solve the problem of rotor shaft wear caused by lateral force generated on the rotor shaft due to installation errors of the external shaft.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a response performance optimization device based on a brushless DC motor and an application method thereof. Background Art

[0002] Brushless DC motors have the characteristics of fast response, large starting torque, and the ability to provide rated torque from zero speed to rated speed. However, the advantages of DC motors are also their disadvantages. Because DC motors need to produce constant torque under rated load, the armature magnetic field and the rotor magnetic field must be maintained at 90°, which requires the use of carbon brushes and commutators.

[0003] When the existing brushless DC motor is working, there is an axial installation error between the rotor shaft and the external shaft of the brushless DC motor, that is, the central axis of the external shaft cannot accurately maintain a collinear state with the central axis of the rotor shaft. As a result, after the external shaft is installed on the rotor shaft, there is always a lateral force acting on the rotor shaft, which causes the rotor shaft to wear and become loose, and the stator cannot drive the rotor shaft in an oblique state to rotate with maximum efficiency, and it also affects the service life of the brushless DC motor. Summary of the invention

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a response performance optimization device based on a brushless DC motor and an application method thereof, which is used to solve the problem in the prior art that when the brushless DC motor is working, there is an axial installation error between the rotor shaft and the external shaft of the brushless DC motor, that is, the central axis of the external shaft cannot accurately ensure that it can maintain a collinear state with the central axis of the rotor shaft. As a result, after the external shaft is installed on the rotor shaft, there is always a lateral force acting on the rotor shaft, which causes the rotor shaft to wear and become loose, and the stator cannot drive the rotor shaft in an oblique state to rotate with maximum efficiency, and it also affects the service life of the brushless DC motor.

[0005] To achieve the above-mentioned purpose and other related purposes, the present invention provides a response performance optimization device based on a brushless DC motor, comprising: a motor body, a stator and a rotor structure; the rotor structure comprises: a first rotating shaft, the first rotating shaft passes through the motor body, and one end of the first rotating shaft is arranged in the middle of the stator; and a rotating shaft adjustment component, the rotating shaft adjustment component is installed at one end of the motor body, the power input end of the rotating shaft adjustment component is connected to the other end of the first rotating shaft, so that the external shaft whose central axis deviates from the first rotating shaft is driven by a reduced voltage when it is connected to the power output end of the rotating shaft adjustment component.

[0006] In one embodiment of the present invention, the shaft adjustment assembly includes: a driving shaft sleeve, one end of which is a power input end; a driven shaft sleeve, one end of which is a power output end, and the other end of the driven shaft sleeve is inserted into the other end of the driving shaft sleeve, and is transmission-connected with the driving shaft sleeve in the driving shaft sleeve; and a locking assembly, which is arranged on the driving shaft sleeve to lock the other end of the driven shaft sleeve in the driving shaft sleeve.

[0007] In one embodiment of the present invention, the active sleeve includes: a sleeve body, a driving cavity is provided in the sleeve body, the driving cavity is in the shape of a cone, a first tooth is circumferentially provided in the driving cavity, and the other end of the driven sleeve is transmission-connected with the first tooth in the driving cavity; an adjusting end cover, the adjusting end cover is installed at the end of the sleeve body corresponding to the driving cavity, and the driven sleeve and the locking assembly are respectively sealed through the adjusting end cover.

[0008] In one embodiment of the present invention, the driven shaft sleeve includes: a driven shaft rod, the driven shaft rod passes through the adjusting end cover and extends into the driving cavity; and a driven member, the driven member is installed at one end of the driven shaft rod in the driving cavity, the driven member is provided with a second tooth along its axial direction, and the driven member is transmission-connected to the first tooth through the second tooth.

[0009] In one embodiment of the present invention, the follower is a spherical structure, and a radial dimension of the follower is between a maximum radial dimension of the driving cavity and a minimum radial dimension of the driving cavity.

[0010] In one embodiment of the present invention, the locking assembly includes: a front locking assembly, which is installed on one side of the sleeve body to lock the side of the follower close to the minimum radial dimension of the drive chamber; and a rear locking assembly, which is installed on the other side of the sleeve body to lock the side of the follower close to the maximum radial dimension of the drive chamber.

[0011] In one embodiment of the present invention, the front locking assembly includes: a positioning and pressing member, a plurality of positioning and pressing members are elastically inserted into the inner wall of the sleeve body corresponding to one end of the driving cavity, and the end of the positioning and pressing member is provided with a guide ball that contacts the follower; and a front locking power member, a plurality of front locking power members are installed on the sleeve body, and the power output end of the front locking power member corresponds to one end of the positioning and pressing member away from the guide ball, so as to respectively lock the positions of each positioning and pressing member and the guide ball along the reverse direction of the push of the follower.

[0012] In one embodiment of the present invention, the rear locking assembly includes: a bracket, one end of which is connected to the inner side wall of the motor body; a locking guide ring, which is installed on the bracket; a slide seat, which is slidably arranged on the guide ring, and after the position is determined, the position of the slide seat is locked by the locking guide ring; a guide block, which is slidably arranged on the slide seat; a telescopic member, one end of which is vertically inserted into the guide block; a push rod, one end of which is connected to the other end of the telescopic member, and the other end of the push rod passes through the adjustment end cover and is connected to a pressing ball , the pressing balls press against the surface of the driven member and the inner wall of the driving cavity respectively; and a pushing power member, the pushing power member is installed on the sliding seat, and its power output end is connected to the derivation block; wherein the pressing ball includes a first pressing hemisphere in contact with the driven member and a second pressing hemisphere in contact with the driving cavity, the first pressing hemisphere and the second pressing hemisphere form a spherical structure, and the maximum radial dimension of the first pressing hemisphere is smaller than the diameter dimension of the spherical structure, and the maximum radial dimension of the second pressing hemisphere is the diameter dimension of the spherical structure.

[0013] In one embodiment of the present invention, the adjustment end cover includes: a mounting cover, a rotating cavity is provided in the middle of the mounting cover; a cover body, the cover body is rotatably arranged in the rotating cavity, an arc-shaped socket is provided in the middle of the cover body, the middle of the arc-shaped socket is hollowed out, and a linear socket is provided on the cover body on one side of the arc-shaped socket; an arc-shaped sliding cover, the arc-shaped sliding cover is inserted into the arc-shaped socket, and the driven shaft rod slides through the arc-shaped sliding cover; and a linear sliding cover, the linear sliding cover is inserted into the linear socket, and the push rod slides through the linear sliding cover.

[0014] The present invention also provides an application method for the aforementioned response performance optimization device based on a brushless DC motor, comprising the following steps:

[0015] Connect the external shaft to the power output end of the driven sleeve so that the arrangement direction of the driven sleeve corresponds to the central axis direction of the external shaft;

[0016] Open the shaft adjustment assembly, connect the other end of the driven shaft sleeve away from the power output end to the driving shaft sleeve in the driving shaft sleeve, and lock the position of the driven shaft sleeve through the locking assembly;

[0017] The rotor structure is driven to rotate by the magnetic force of the stator, and drives the power input end of the driven shaft sleeve through the first rotating shaft to drive the driven shaft sleeve and the external shaft with non-coaxial axes to rotate.

[0018] As described above, the response performance optimization device based on a DC brushless motor and its application method of the present invention have the following beneficial effects: through the mutual cooperation between the rotor structure and the stator in the motor body, it can be ensured that the rotor structure always corresponds to the magnetic center of the stator, thereby ensuring that the rotor structure can be driven by the maximum magnetic force. Moreover, by utilizing the mutual cooperation between the first rotating shaft and the rotating shaft adjustment assembly in the rotor structure, it is easy to overcome the axial offset error of the external shaft when it is connected to the first rotating shaft, thereby solving the problem that when the external shaft has an axial error and is directly connected to the first rotating shaft, a lateral force is formed, causing the first rotating shaft to wear and axially offset, thereby causing the stator to be unable to drive the rotor to rotate to the maximum extent. At the same time, long-term wear of the rotor shaft will also cause the rotor to be loosely installed, further affecting the service life of the brushless motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the optimized structure of the present invention.

[0020] Figure 2 For the present invention Figure 1 Schematic diagram of the structure when the middle rotor structure is connected to the motor body and the external shaft respectively.

[0021] Figure 3 It is a structural schematic diagram of the rotor structure of the present invention.

[0022] Figure 4 It is a schematic structural diagram of the adjustable end cover of the present invention.

[0023] Figure 5 It is a schematic diagram of the structure of the driven shaft sleeve and the driving shaft sleeve when they are assembled.

[0024] Figure 6 It is a schematic structural diagram of the front locking assembly of the present invention.

[0025] Figure 7 It is a schematic diagram of the structure of the driven shaft sleeve of the present invention when it cooperates with the front locking assembly.

[0026] Figure 8 This is a structural arrangement diagram of the positioning pressing member and the guide ball of the present invention.

[0027] Fig. 9 It is a structural schematic diagram of the ball guide of the present invention.

[0028] Fig.10 Flow chart of the application method of the optimized structure of the present invention. DETAILED DESCRIPTION

[0029] See also Figure 1 and Figure 2In one embodiment of the present invention, a response performance optimization device based on a brushless DC motor provided by the present invention includes: a motor body 100, a stator 300 and a rotor structure 200; the rotor structure 200 includes: a first rotating shaft 1, the first rotating shaft 1 passes through the motor body 100, and one end of the first rotating shaft 1 is arranged in the middle of the stator; and a rotating shaft adjustment component 2, the rotating shaft adjustment component 2 is installed at one end of the motor body 100, and the power input end 21 of the rotating shaft adjustment component 2 is connected to the other end of the first rotating shaft 1, so that the outer shaft 3 whose central axis deviates from the first rotating shaft 1 is connected to the power output end 22 of the rotating shaft adjustment component 2, and is driven by a step-down voltage.

[0030] In this embodiment, it can be seen that in the response performance optimization device of the present invention, the basic components of the DC brushless motor are formed by the motor body 100, the stator 300 and the rotor structure 200. When connected with the external shaft 3, by adjusting the rotor structure 200, it can fully adapt to the axial error when the external shaft 3 is docked, thereby reducing the lateral force applied by the external shaft 3 to the power output end of the brushless motor when connected to the power output end of the brushless motor, resulting in the rotor structure 200 and the motor body 100 forming a strong friction, and being in a lateral pressure state for a long time, so that the rotor structure 200 becomes loose, affecting the service life of the brushless motor. Specifically, the magnetic driving direction of the first rotating shaft 1 corresponds to that of the stator 300, thereby driving the rotation of the first rotating shaft 1 to the maximum extent. The first rotating shaft 1 is connected to the power input end 21 of the rotating shaft adjustment component 2, and then when the external shaft 3 is connected to the power output end 22 of the rotating shaft adjustment component 2, the power output end 22 of the rotating shaft adjustment component 2 can be further kept corresponding to the central axis of the external shaft 3. Furthermore, during the installation of the external shaft 3, the axial installation error can be effectively overcome while ensuring the effective transmission of the power of the first rotating shaft 1 to the external shaft 3. Moreover, when overcoming the axial installation error of the external shaft 3, the lateral thrust of the external shaft 3 on the first rotating shaft 1 can be effectively reduced, thereby ensuring the service life of the brushless motor. Among them, the step-down drive in the present invention refers to the ability to effectively reduce the lateral thrust formed on the first rotating shaft 1 during the driving process when the external shaft 3 has an axial error.

[0031] like Figure 3 As shown, the shaft adjustment assembly 2 includes: a driving sleeve 23, one end of which is a power input end 21; a driven sleeve 24, one end of which is a power output end 22, and the other end of the driven sleeve 24 is inserted into the other end of the driving sleeve 23, and is transmission-connected with the driving sleeve 23 in the driving sleeve 23; and a locking assembly 25, which is arranged on the driving sleeve 23 to lock the other end of the driven sleeve 24 in the driving sleeve 23.

[0032] In one embodiment of the present invention, during the adjustment process, the shaft adjustment assembly 2 connects the external shaft 3 to the power output end 22 at one end of the driven shaft sleeve 24, and connects the first shaft 1 to the power input end 21 at one end of the driving shaft sleeve 23. Thus, when the first shaft 1 drives the driving shaft sleeve 23 to rotate, the driven shaft sleeve 24 coaxially arranged with the external shaft 3 can be driven to rotate by the driving shaft sleeve 23, thereby further driving the external shaft 3 to rotate. Moreover, when the driven shaft sleeve 24 is installed in the driving shaft sleeve 23, the position of the driven shaft sleeve 24 will be locked by the locking assembly 25 to ensure that the driving shaft sleeve 23 effectively drives the driven shaft sleeve 24.

[0033] like Figure 4 and Figure 5 As shown, the active sleeve 23 includes: a sleeve body 231, a driving cavity 2311 is provided in the sleeve body 231, the driving cavity 2311 is in the shape of a cone, a first tooth is circumferentially provided in the driving cavity 2311, and the other end of the driven sleeve 24 is transmission-connected with the first tooth in the driving cavity 2311; an adjusting end cover 232, the adjusting end cover 232 is installed at the end of the sleeve body 231 corresponding to the driving cavity 2311, and the driven sleeve 24 and the locking assembly 25 are respectively sealed through the adjusting end cover 232.

[0034] In one embodiment of the present invention, when the active sleeve 23 drives the driven sleeve 24 to rotate, the active sleeve 23 is connected to the driven sleeve 24 by the first teeth axially arranged on the inner wall of the driving cavity 2311 in the driving cavity 2311 inside the sleeve body 231, and the driven sleeve 24 whose position is adaptively adjusted according to the axial direction of the external shaft 3 is locked by the locking assembly 25 to ensure the stability of the transmission between the first teeth and the driven sleeve 24. Moreover, when the driven sleeve 24 and the locking assembly 25 are adjusted in position, the adjustment end cover 232 is always in a state of sealing the driven sleeve 24 and the locking assembly 25.

[0035] Furthermore, the driven shaft sleeve 24 includes: a driven shaft 241, which passes through the adjusting end cover 232 and extends into the driving cavity 2311; and a driven member 242, which is installed at one end of the driven shaft 241 in the driving cavity 2311, and the driven member 242 is provided with a second tooth along its axial direction, and the driven member 242 is transmission-connected to the first tooth through the second tooth.

[0036] In one embodiment of the present invention, when the driven sleeve 24 is installed in the driving cavity 2311, the driven shaft 241 and the driven member 242 at one end thereof are coaxially arranged with the external shaft 3, and the driven member 242 can be pressed against the inner wall of the driving cavity 2311, and the second teeth on the driven member 242 are meshed with the first teeth to achieve the purpose of transmission. In this embodiment, in order to ensure that the driven member 242 can move back and forth in the driving cavity 2311, the external shaft 3 can be a member of a telescopic structure.

[0037] Specifically, the follower 242 is a spherical structure, and the radial dimension of the follower 242 is between the maximum radial dimension of the drive cavity 2311 and the minimum radial dimension of the drive cavity 2311. In this embodiment, by using the spherical follower 242, it is possible to achieve pressure-free transmission when the external shaft 3 only has a radial deviation from the first rotating shaft 1, that is, when the central axis of the external shaft 3 and the central axis of the first rotating shaft 1 are parallel to each other but not colinear. It is also possible to achieve pressure-free transmission when the central axis of the external shaft 3 and the central axis of the first rotating shaft 1 are neither parallel nor intersecting, and it is only necessary to contact the first tooth of the drive cavity 2311 through the spherical surface transmission of the follower 242.

[0038] like Figure 6 As shown, the locking assembly 25 includes: a front locking assembly 251, which is installed on one side of the sleeve body 231 to lock the side of the follower 242 with the minimum radial dimension close to the driving chamber 2311; and a rear locking assembly 252, which is installed on the other side of the sleeve body 231 to lock the side of the follower 242 with the maximum radial dimension close to the driving chamber 2311.

[0039] In one embodiment of the present invention, the front locking assembly 251 can be used to adaptively press the follower 242 away from the driven shaft 241 to solve the play that occurs when the follower 242 is connected to the first tooth transmission. The rear locking assembly 252 can be used to adaptively press the follower 242 close to the driven shaft 241 after the front locking assembly 251 is locked, so as to ensure the stability of the transmission of the follower 242 by pressing the follower 242 on both sides.

[0040] like Figure 7 and Figure 8As shown, the front locking assembly 251 includes: a positioning and pressing member 2511, a plurality of positioning and pressing members 2511 are elastically inserted on the inner wall of the sleeve body 231 corresponding to one end of the driving cavity 2311, and the end of the positioning and pressing member 2511 is provided with a guide ball 2512 in contact with the follower 242; and a front locking power member 2513, a plurality of front locking power members 2513 are installed on the sleeve body 231, and the power output end of the front locking power member 2513 corresponds to one end of the positioning and pressing member 2511 away from the guide ball 2512, so as to respectively lock the positions of each positioning and pressing member 2511 and the guide ball 2512 along the reverse direction of the push of the follower 242.

[0041] In one embodiment of the present invention, when the front locking assembly 251 performs adaptive pressing on the follower 242 away from the driven shaft 241, one end of the spring 2514 is connected to the side wall of the positioning pressing member 2511, and the other end of the spring 2514 is connected to the inner wall of the sleeve body 231. After the follower 242 is in place, the positioning pressing member 2511 is extended by the elastic force of the spring 2514, and the guide ball 2512 is pressed against the surface of the follower 242. Thus, the power output end of the front locking power member 2513, which is preferably a cylinder, is approached and pressed toward the other end of each positioning pressing member 2511. A pressure sensor can also be provided at the power output end of each front locking power member 2513. When the power output end of the front locking power member 2513 contacts the positioning pressing member 2511, the pressure sensor collects a pressure signal, and controls the power output end of the front locking power member 2513 to stop driving and maintain a stable pressure state. Furthermore, when the follower 242 rotates, each guide ball 2512 will also rotate accordingly to reduce friction.

[0042] like Figure 3 and Fig. 9As shown, the rear locking assembly 252 includes: a bracket 2521, one end of which is connected to the inner wall of the motor body 100; a locking guide ring 2522, which is installed on the bracket 2521; a slide 2523, which is slidably arranged on the guide ring 2522, and after the position is determined, the position of the slide 2523 is locked by the locking guide ring 2522; a guide block 2524, which is slidably arranged on the slide 2523; a telescopic member 2525, one end of which is vertically inserted into the guide block 2524; a push rod 2526, one end of which is connected to the other end of the telescopic member 2525, and the other end of the push rod 2526 passes through the adjustment end cover 232 and is connected It is connected with a pressing ball 2527, which presses on the surface of the follower 242 and the inner wall of the driving chamber 2311 respectively; and a pushing power member 2528, which is installed on the sliding seat 2523, and its power output end is connected with the pushing block 2524; wherein, the pressing ball 2527 includes a first pressing hemisphere 25271 in contact with the follower 242 and a second pressing hemisphere 25272 in contact with the driving chamber 2311, the first pressing hemisphere 25271 and the second pressing hemisphere 25272 form a spherical structure, and the maximum radial dimension of the first pressing hemisphere 25271 is smaller than the diameter dimension of the spherical structure, and the maximum radial dimension of the second pressing hemisphere 25272 is the diameter dimension of the spherical structure.

[0043] In one embodiment of the present invention, the locking guide ring 2522 is connected to the inner wall of the motor body 100 through the bracket 2521. When the position of the follower 242 is determined, the position is locked by adjusting the circumferential position of the slide 2523 on the locking guide ring 2522. Then, the pushing power member 2528, which is preferably a cylinder, pushes the push block 2524 to move toward one side of the follower 242. After the push ball 2527 contacts the inner wall of the drive cavity 2311 or the outer surface of the follower 242, under the guidance of the push block 2524 to the telescopic member 2525, the push ball 2527 can adaptively contact the inner wall of the drive cavity 2311 and the outer surface of the follower 242, thereby limiting the follower 242 on the other side. Moreover, when the follower 242 rotates following the driving sleeve 23, due to the contact between the second pressing hemisphere 25272 and the inner wall of the driving cavity 2311, it will rotate at a first speed matching the driving cavity 2311, and the first pressing hemisphere 25271 in contact with the follower 242 will rotate at a speed matching the follower 242, so as to achieve the pressing of the follower 242 by the pressing ball 2527, and at the same time, can also meet the rotation requirements of the driving cavity 2311 and the follower 242. Moreover, a pressure sensor can also be installed at the power output end of the pushing power member 2528, and when the pressure value reaches the set value, the power output of the power output end of the pushing power member 2528 is controlled to stop.

[0044] Specifically, the slide seat 2523 may include a sliding guide ring and a mounting seat that are rotatably matched with the locking guide ring 2522, and the mounting seat can realize the installation of the pushing power member 2528 and the sliding connection of the pushing block 2524. A screw is threadedly connected to one side of the locking guide ring 2522, and one end of the screw can be threaded through the locking guide ring 2522 and contact the surface of the sliding guide ring, thereby realizing the surface resistance of the sliding guide ring to achieve the effect of position locking.

[0045] like Figure 4 As shown, the adjustment end cover 232 includes: a mounting cover 2326, a rotating cavity is provided in the middle of the mounting cover 2326; a cover body 2321, the cover body 2321 is rotatably arranged in the rotating cavity, an arc-shaped plug sleeve 2322 is provided in the middle of the cover body 2321, the middle of the arc-shaped plug sleeve 2322 is hollowed out, and a linear plug sleeve 2323 is provided on the cover body 2321 on one side of the arc-shaped plug sleeve 2322; an arc-shaped sliding cover 2324, the arc-shaped sliding cover 2324 is inserted into the arc-shaped plug sleeve 2322, and the driven shaft 241 slides through the arc-shaped sliding cover 2324; and a linear sliding cover 2325, the linear sliding cover 2325 is inserted into the linear plug sleeve 2323, and the push rod 2526 slides through the linear sliding cover 2325.

[0046] In one embodiment of the present invention, the mounting cover 2326 and the cover body 2321 are in a rotational connection relationship, so that when the slide seat 2523 is rotated to adjust the position, the push rod 2526 can be adaptively adjusted together with the cover body 2321. The arc-shaped plug sleeve 2322 in the middle of the cover body 2321 can be inserted into the arc-shaped slide cover 2324. After insertion, the arc-shaped slide cover 2324 can be rotated in a small range in the arc-shaped plug sleeve 2322 to adjust the axial overlap arrangement of the driven shaft 241 and the external shaft 3. On the cover body 2321, the linear slide cover 2325 is inserted into the linear plug sleeve 2323, so that the linear slide cover 2325 can move up and down in the linear plug sleeve 2323. Thereby, when the driven shaft 241 is adjusted in the radial direction of the driving cavity 2311, the linear slide cover 2325 can be adaptively adjusted in the linear plug sleeve 2323.

[0047] like Fig.10 As shown, the present invention also provides an application method for the aforementioned response performance optimization device based on a brushless DC motor, comprising the following steps:

[0048] Connect the external shaft 3 to the power output end 22 of the driven shaft sleeve 24 so that the arrangement direction of the driven shaft sleeve 24 corresponds to the central axis direction of the external shaft 3;

[0049] Open the shaft adjustment assembly 2, and connect the other end of the driven shaft sleeve 24 away from the power output end 22 to the driving shaft sleeve 23 in a transmission manner in the driving shaft sleeve 23, and lock the position of the driven shaft sleeve 24 through the locking assembly 25;

[0050] The rotor structure 200 is driven to rotate by the magnetic force of the stator 300 , and drives the power input end 21 of the driven shaft sleeve 24 through the first rotating shaft 1 , so as to drive the driven shaft sleeve 24 and the external shaft 3 , which are not coaxial, to rotate.

[0051] In summary, the present invention can ensure that the rotor structure 200 always corresponds to the magnetic center of the stator 300 through the mutual cooperation between the rotor structure 200 and the stator 300 in the motor body 100, thereby ensuring that the rotor structure 200 can be driven by the maximum magnetic force. Moreover, by utilizing the mutual cooperation between the first rotating shaft 1 and the rotating shaft adjustment assembly 2 in the rotor structure 200, it is easy to overcome the axial offset error of the external shaft 3 when it is connected to the first rotating shaft 1, thereby solving the problem that when the external shaft 3 has an axial error and is directly connected to the first rotating shaft 1, a lateral force is formed, causing the first rotating shaft 1 to wear and axially offset, thereby causing the stator 300 to be unable to drive the rotor to rotate to the maximum extent. At the same time, long-term wear of the rotor shaft will also cause the rotor to be loosely installed, further affecting the service life of the brushless motor. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0052] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A response performance optimization device based on a brushless DC motor, characterized in that: include: A motor body (100), a stator (300) and a rotor structure (200); The rotor structure (200) comprises: a first rotating shaft (1), the first rotating shaft (1) passing through the motor body (100), and one end of the first rotating shaft (1) being arranged at the middle part of the stator; and a shaft adjustment component (2), the shaft adjustment component (2) being mounted on one end of the motor body (100), the power input end (21) of the shaft adjustment component (2) being connected to the other end of the first shaft (1), so that an external shaft (3) whose central axis deviates from that of the first shaft (1) is driven by a reduced voltage when connected to the power output end (22) of the shaft adjustment component (2); The rotating shaft adjustment component (2) comprises: A driving shaft sleeve (23), one end of the driving shaft sleeve (23) being the power input end (21); A driven shaft sleeve (24), one end of which is the power output end (22), and the other end of which is inserted into the other end of the driving shaft sleeve (23) and is transmission-connected with the driving shaft sleeve (23) in the driving shaft sleeve (23); and a locking assembly (25), the locking assembly (25) being arranged on the driving shaft sleeve (23) so as to lock the other end of the driven shaft sleeve (24) in the driving shaft sleeve (23); The active shaft sleeve (23) comprises: A shaft sleeve body (231), wherein a driving cavity (2311) is provided in the shaft sleeve body (231), wherein the driving cavity (2311) is in the shape of a frustum, wherein first teeth are provided in the circumferential direction of the driving cavity (2311), and wherein the other end of the driven shaft sleeve (24) is drivingly connected to the first teeth in the driving cavity (2311); An adjusting end cover (232), the adjusting end cover (232) being mounted on an end of the shaft sleeve body (231) corresponding to the driving cavity (2311), the driven shaft sleeve (24) and the locking assembly (25) respectively passing through the adjusting end cover (232) in a sealed manner; The driven shaft sleeve (24) comprises: A driven shaft (241), the driven shaft (241) passing through the adjustment end cover (232) and extending into the driving cavity (2311); and A driven member (242), the driven member (242) being mounted on one end of the driven shaft (241) in the driving cavity (2311), the driven member (242) being provided with second teeth along its axial direction, the driven member (242) being drivingly connected to the first teeth via the second teeth; The locking assembly (25) comprises: A front locking assembly (251), the front locking assembly (251) being mounted on one side of the shaft sleeve body (231) to lock a side of the driven member (242) close to the minimum radial dimension of the driving chamber (2311); and A rear locking assembly (252) is installed on the other side of the shaft sleeve body (231) to lock a side of the driven member (242) close to the maximum radial dimension of the driving cavity (2311).

2. The response performance optimization device based on a brushless DC motor according to claim 1, characterized in that: The driven member (242) is a spherical structure, and the radial dimension of the driven member (242) is between the maximum radial dimension of the driving cavity (2311) and the minimum radial dimension of the driving cavity (2311).

3. The response performance optimization device based on a brushless DC motor according to claim 1, characterized in that: The front locking assembly (251) comprises: A positioning and pressing member (2511), wherein a plurality of positioning and pressing members (2511) are elastically inserted into the inner wall of the shaft sleeve body (231) corresponding to one end of the driving cavity (2311), and a guide ball (2512) in contact with the driven member (242) is provided at an end of the positioning and pressing member (2511); and A front locking power member (2513), a plurality of the front locking power members (2513) are mounted on the shaft sleeve body (231), and a power output end of the front locking power member (2513) corresponds to an end of the positioning and pressing member (2511) away from the guide ball (2512), so as to respectively lock the positions of the positioning and pressing members (2511) and the guide ball (2512) in the reverse direction of the push of the follower (242).

4. The response performance optimization device based on a brushless DC motor according to claim 1, characterized in that: The rear locking assembly (252) comprises: A bracket (2521), one end of the bracket (2521) being connected to the inner side wall of the motor body (100); A locking guide ring (2522), wherein the locking guide ring (2522) is mounted on the bracket (2521); A slide seat (2523), wherein the slide seat (2523) is slidably disposed on the guide ring (2522), and after the position is determined, the position of the slide seat (2523) is locked by the locking guide ring (2522); A derivation block (2524), the derivation block (2524) being slidably disposed on the slide seat (2523); A telescopic member (2525), one end of which is vertically inserted into the derivation block (2524); a push rod (2526), ​​one end of the push rod (2526) being connected to the other end of the telescopic member (2525), the other end of the push rod (2526) passing through the adjustment end cover (232) and being connected to a pressing ball (2527), the pressing ball (2527) pressing against the surface of the follower (242) and the inner wall of the driving chamber (2311) respectively; and A pushing power member (2528), wherein the pushing power member (2528) is mounted on the slide seat (2523), and a power output end thereof is connected to the derivation block (2524); The pressing ball (2527) comprises a first pressing hemisphere (25271) in contact with the follower (242) and a second pressing hemisphere (25272) in contact with the driving chamber (2311), wherein the first pressing hemisphere (25271) and the second pressing hemisphere (25272) form a spherical structure, and the maximum radial dimension of the first pressing hemisphere (25271) is smaller than the diameter dimension of the spherical structure, and the maximum radial dimension of the second pressing hemisphere (25272) is the diameter dimension of the spherical structure.

5. The response performance optimization device based on a brushless DC motor according to claim 4, characterized in that: The regulating end cap (232) comprises: A mounting cover (2326), wherein a rotation cavity is provided in the middle of the mounting cover (2326); A cover body (2321), the cover body (2321) being rotatably disposed in the rotating cavity, an arc-shaped insert sleeve (2322) being provided in the middle of the cover body (2321), the middle of the arc-shaped insert sleeve (2322) being hollowed out, and a linear insert sleeve (2323) being provided on the cover body (2321) on one side of the arc-shaped insert sleeve (2322); An arc-shaped sliding cover (2324), wherein the arc-shaped sliding cover (2324) is inserted into the arc-shaped inserting sleeve (2322), and the driven shaft (241) slides through the arc-shaped sliding cover (2324); and A linear slide cover (2325), the linear slide cover (2325) is inserted into the linear insert sleeve (2323), and the push rod (2526) slides through the linear slide cover (2325).

6. An application method for the response performance optimization device based on a brushless DC motor according to any one of claims 1 to 5, characterized in that: The steps include: Connecting the external shaft (3) to the power output end (22) of the driven shaft sleeve (24) so ​​that the arrangement direction of the driven shaft sleeve (24) corresponds to the direction of the central axis of the external shaft (3); Open the shaft adjustment component (2), drive-connect the other end of the driven shaft sleeve (24) away from the power output end (22) with the driving shaft sleeve (23) in the driving shaft sleeve (23), and lock the position of the driven shaft sleeve (24) by means of a locking component (25); The rotor structure (200) is driven to rotate by the magnetic force of the stator (300), and drives the power input end (21) of the driven shaft sleeve (24) through the first rotating shaft (1), so as to drive the driven shaft sleeve (24) and the external shaft (3) with non-coaxial axes to rotate.

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