A quick-mount motor

Abstract

The application relates to the field of electric machines, and discloses a quick-assembly type electric machine which comprises a machine shell, one end of which is provided with an end cover, and the inner side of the end cover is provided with a bearing chamber; a rotor assembly which has an output shaft rotatably connected between the machine shell and the bearing chamber, the end of the output shaft away from the bearing chamber extends out of the machine shell, and the position of the output shaft close to the bearing chamber is provided with a commutator; a stator assembly which is arranged in the machine shell and is located outside the rotor assembly; and an electricity connection unit which comprises a fixing shell, a transmission column, a transmission assembly, an elastic member and an electric brush, the fixing shell is connected to the inner side of the end cover, the transmission column is movably arranged in the fixing shell along the up-down direction, one end of the transmission column penetrates through the fixing shell and extends out of the end cover, and the transmission assembly is transmissionally connected between the electric brush and the transmission column; when the electric machine is assembled, the electric brush can be driven to move from the outside of the end cover, an avoiding space is provided for the installation of the commutator, and therefore the quick assembly of the end cover and the machine shell is realized.

Description

Technical Field

[0001] This invention relates to the field of electric motors, and more particularly to a quick-installation electric motor. Background Technology

[0002] Brushed motors contain elastic elements, brushes, and a commutator. The elastic elements press the brushes against the commutator to maintain contact. However, when assembling the end cover and housing of a brushed motor, the elastic elements and brushes are typically mounted on the end cover, while the commutator is installed inside the housing. Directly connecting the end cover and housing would cause the elastic elements to pull the brushes closer to the center of the end cover, interfering with the commutator inside the housing. This necessitates manual or automated manipulation to move the brushes away from the center of the end cover before the end cover and housing can be assembled. Since the brushes are located inside the end cover, manipulating them is very cumbersome and requires the assembly of the end cover and housing to remove the brush-moving mechanism from the end cover. The entire process is complex and tedious, and the brush's elastic connection structure can easily be damaged during this process. Therefore, a motor that is easier and faster to assemble is urgently needed. Summary of the Invention

[0003] The purpose of this invention is to provide a quick-installation motor to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] According to a first aspect of the present invention, a quick-connect motor includes: a housing with an end cover at one end, a bearing chamber disposed inside the end cover; a rotor assembly having an output shaft rotatably connected between the housing and the bearing chamber, the end of the output shaft extending away from the bearing chamber extending out of the housing, and a commutator disposed near the bearing chamber on the output shaft; a stator assembly disposed within the housing, the stator assembly being located outside the rotor assembly; and a power connection unit including a fixed housing, a transmission column, a transmission assembly, an elastic element, and brushes, the fixed housing being connected to the housing. Inside the end cover, the drive column is movably disposed within the fixed housing in the vertical direction. One end of the drive column passes through the fixed housing and extends out of the end cover. The drive assembly is drively connected between the brush and the drive column. The drive column can drive the brush to move in a direction closer to or away from the commutator through the drive assembly. The elastic element is disposed between the drive assembly and the fixed housing. The elastic element has a tendency to drive the brush closer to and against the commutator through the drive assembly. At least two power connection units are disposed around the commutator.

[0005] This technical solution has at least the following beneficial effects: Before assembling the end cover and the housing, the drive column is moved manually or mechanically from the outside of the end cover in a vertical direction. The internal transmission components overcome the elastic force of the elastic elements, driving the brushes away from the commutator's mounting position, thus providing installation space for the commutator. At this time, the end cover can be connected to the housing, and the output shaft end within the rotor assembly enters the bearing chamber relative to the bearing housing, allowing the commutator on the output shaft to enter between the brushes of multiple energized units. After assembly, the external force on the drive column is removed, and the brushes automatically return to their original position under the action of the elastic elements. The commutator is positioned and pressed tightly. During operation, the brushes are energized, and the brushes transmit current to the rotor assembly through contact with the commutator. Through the interaction between the rotor assembly and the stator assembly, the output shaft inside the rotor assembly rotates continuously. Thus, the brushes can be moved from outside the end cover during assembly, providing clearance for the installation of the commutator, thereby enabling quick assembly of the end cover and the housing. This is especially suitable for automated installation of motors, and the maintenance of the motor during use is also more convenient, as there is no need for special tools to move the brushes from inside the end cover, reducing maintenance costs.

[0006] According to some embodiments of the present invention, the transmission assembly includes a transmission member, a slider, and a transmission part. The transmission member is disposed on the transmission column. The two ends of the elastic member are respectively located between the transmission member and the fixed housing. The slider is slidably connected to the fixed housing in a direction approaching or away from the commutator. The brush is connected to the slider. The transmission part is throttlely connected between the transmission member and the slider. The transmission member is fixed on the transmission column. The two ends of the elastic member act on the transmission member and the fixed housing respectively. The slider is slidably mounted in the fixed housing in a radial direction. The brush is fixed on the slider. When the transmission column moves up and down, the power can be transmitted to the transmission part through the transmission member. The transmission part converts the power in the up and down direction into a force that moves the slider closer to or away from the commutator. At this time, the elastic force of the elastic member can act on the transmission member, causing the transmission column to slide up or down to one end of its stroke, thereby driving the slider to move closer to the commutator through the transmission part.

[0007] According to some embodiments of the present invention, the transmission unit includes a transmission rod, the two ends of which are respectively hinged between the transmission member and the slider. When the transmission column moves upward, power can be transmitted to the transmission rod through the transmission member, and the transmission rod drives the brushes on the slider to move closer to the commutator. When the transmission column moves downward, power can be transmitted to the transmission rod through the transmission member, and the transmission rod drives the brushes on the slider away from the commutator. Thus, the overall structure is simple and compact, and the vertical displacement of the transmission member can be converted into the displacement of the slider in the left-right direction.

[0008] According to some embodiments of the present invention, the transmission component includes a fixed inner sleeve and a movable outer sleeve. The fixed inner sleeve is connected to the inner side of the fixed shell, and the movable outer sleeve is fitted onto the outer side of the fixed inner sleeve. The movable outer sleeve is disposed on the transmission column, and the elastic element is located inside the fixed inner sleeve. The two ends of the elastic element abut against the ends of the movable outer sleeve and the fixed shell, respectively. The fixed inner sleeve and the movable outer sleeve form a telescopic cylindrical structure, which provides precise guidance and protection for the elastic element, allowing the elastic force provided by the elastic element to be transmitted to the stably movable outer sleeve, thereby effectively preventing instability when transmitting power to the transmission component.

[0009] According to some embodiments of the present invention, the power connection unit further includes a clutch assembly disposed between the transmission member and the transmission column. The clutch assembly can lock or unlock the transmission member and the transmission column, with one end of the transmission column located inside the fixed housing abutting against the inner side of the fixed housing. When the motor is working, the clutch assembly can lock the transmission member and the transmission column together. At this time, the transmission column is in the end-of-stroke state. Since the transmission member and the transmission column are connected as one unit, the elastic force of the elastic element will not be transmitted to the brush through the transmission member, thereby effectively preventing the problem of the elastic element continuously applying pressure to the brush and causing severe brush wear. After the motor stops or after a period of time during motor use, the clutch assembly is unlocked, and the elastic force of the elastic element drives the brush to approach the commutator through the transmission member, thereby compensating for the amount of brush wear and ensuring that the brush and the commutator maintain effective contact. Then, the locking of the transmission member is maintained. In this way, the pressure of the elastic element on the brush can be dynamically adjusted, effectively reducing the problem of uneven and excessively rapid brush wear caused by the elastic force of the elastic element, and significantly extending the service life of the brush.

[0010] According to some embodiments of the present invention, one end of the transmission column located inside the fixed housing is detachably connected to the inner side of the fixed housing. During assembly, the transmission column is removed from the inner side of the fixed housing. At this time, the clutch assembly locks the transmission component and the transmission column together, allowing the transmission column to move up and down, driving the transmission component to move up and down synchronously. After assembly is completed, the transmission column is reconnected to the inner side of the fixed housing, so that the transmission column and the fixed housing are locked together. The clutch assembly dynamically adjusts the locking or unlocking state of the transmission component and the transmission column according to whether it is necessary to counteract the elastic force of the elastic element on the brush. Thus, when the transmission column is not needed, connecting the transmission column to the inner side of the fixed housing can better maintain the position of the transmission column.

[0011] According to some embodiments of the present invention, the clutch assembly includes a reservoir, an energized coil, and a locking rod. The reservoir is connected to the transmission column and is filled with magnetorheological fluid. The locking rod is connected to the transmission component, with one end extending into the reservoir. When the energized coil is energized, a magnetic field is generated within the reservoir. When the clutch assembly needs to lock the transmission component and the transmission column together, the energized coil is energized, generating a magnetic field within the reservoir. At this time, the magnetorheological fluid in the reservoir is a low-flow, high-viscosity fluid, which can lock the locking rod, thereby achieving mutual locking between the transmission component and the transmission column. When the energized coil is de-energized, the magnetorheological fluid becomes a high-flow, low-viscosity fluid, allowing the locking rod to move relative to the reservoir, thus enabling the clutch assembly to unlock the transmission component and the transmission column.

[0012] According to some embodiments of the present invention, the inner wall of the reservoir is provided with stop ribs extending in the vertical direction, and multiple stop ribs are spaced apart around the locking rod. The multiple stop ribs increase the contact area between the magnetorheological fluid and the stop ribs, thereby enhancing the shear resistance of the magnetorheological fluid in the solidified state, and making the locking rod more reliably locked and fixed within the reservoir when the energized coil is in the energized state.

[0013] According to some embodiments of the present invention, the locking rod has a hollow structure, and an opening communicating with the interior of the locking rod is provided at the top end of the locking rod. The energized coil is disposed inside the locking rod. Constructing the energized coil within the hollow locking rod better protects the coil, optimizes magnetic circuit efficiency, and results in a more compact structure.

[0014] According to some embodiments of the present invention, a wiring cavity is provided inside the transmission column, the wiring cavity extending along the length of the transmission column, and a wiring hole is provided on the outer side of the transmission column corresponding to the position of the locking rod, the wiring hole communicating with the wiring cavity. A slot is provided on the end of the transmission column extending out of the end cover, the wiring cavity communicating with the slot, and a wiring terminal is provided inside the slot. The lead wire of the energized coil connected inside the locking rod is led to the wiring hole and out from the wiring cavity to the wiring terminal outside the end cover. When the end cover and the housing need to be assembled together, the buckle on the external device moves into the slot of the transmission column and makes an electrical connection with the wiring terminal in the slot. At this time, a stable structure and electrical connection with the transmission column can be achieved. In use, the power supply line of the external device can be connected to the wiring terminal in the slot to energize the internal energized coil. By setting the wiring terminal in the slot, the wiring is better hidden and protected, and the convenience of transmission and electrical connection during automated assembly production is greatly improved. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of the present invention, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall internal structure of the present invention.

[0017] Figure 2 yes Figure 1 A magnified view of part A.

[0018] Figure 3 yes Figure 2 A magnified view of part B.

[0019] In the attached diagram: 1-housing, 11-end cover, 12-bearing chamber, 2-output shaft, 21-commutator, 3-stator assembly, 41-fixed housing, 42-transmission column, 421-wiring cavity, 422-wiring hole, 423-slot, 424-terminal terminal, 43-elastic element, 44-brush, 45-transmission component, 451-fixed inner sleeve, 452-movable outer sleeve, 46-slider, 47-transmission rod, 48-clutch assembly, 481-liquid reservoir, 482-energized coil, 483-locking rod, 484-stop rib. Detailed Implementation

[0020] The following will clearly and completely describe the concept, specific structure, and technical effects of the present invention in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. Furthermore, all connection relationships mentioned herein do not simply refer to direct connection of components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.

[0021] Reference Figure 1 and Figure 2According to a first aspect of the present invention, a quick-assembly motor includes: a housing 1, one end of which is provided with an end cover 11, and a bearing chamber 12 is provided inside the end cover 11; a rotor assembly having an output shaft 2 rotatably connected between the housing 1 and the bearing chamber 12, the end of the output shaft 2 away from the bearing chamber 12 extending out of the housing 1, and a commutator 21 provided near the bearing chamber 12 on the output shaft 2; a stator assembly 3 disposed inside the housing 1, the stator assembly 3 being located outside the rotor assembly, and in practical applications, the stator assembly 3 including a plurality of permanent magnets arranged around the inner side of the housing 1; and a power connection unit including a fixed shell 41, a transmission column 42, a transmission assembly, an elastic element 43, and an electric... The brush 44 is attached to the fixed housing 41, which is connected to the inside of the end cover 11. The transmission column 42 is movably disposed in the fixed housing 41 in the vertical direction. One end of the transmission column 42 passes through the fixed housing 41 and extends out of the end cover 11. The transmission assembly is tractively connected between the brush 44 and the transmission column 42. The transmission column 42 can drive the brush 44 to move in a direction closer to or away from the commutator 21 through the transmission assembly. The elastic element 43 is disposed between the transmission assembly and the fixed housing 41. The elastic element 43 has a tendency to drive the brush 44 closer to and against the commutator 21 through the transmission assembly. At least two power connection units are provided around the commutator 21.

[0022] In this quick-assembly motor, before assembling the end cover 11 and the housing 1, the transmission column 42 is moved manually or mechanically from the outside of the end cover 11 in a vertical direction. Through the internal transmission components, the elastic force of the elastic element 43 is overcome, and the brushes 44 are moved away from the installation position of the commutator 21, thus providing installation space for the commutator 21. At this time, the end cover 11 can be connected to the housing 1, and the end of the output shaft 2 in the rotor assembly enters the bearing chamber 12 relative to each other, allowing the commutator 21 on the output shaft 2 to enter between the brushes 44 of the multiple energized units. After assembly, the external force on the transmission column 42 is removed, and the brushes 44 automatically... Reset and press the commutator 21. During operation, the brush 44 is energized. The brush 44 transmits current to the rotor assembly through contact with the commutator 21. Through the interaction between the rotor assembly and the stator assembly 3, the output shaft 2 inside the rotor assembly rotates continuously. Thus, the brush 44 can be moved from the outside of the end cover 11 during assembly, providing clearance for the installation of the commutator 21. This allows for quick assembly of the end cover 11 and the housing 1, which is especially suitable for automated installation of the motor. Furthermore, the maintenance of the motor during use is more convenient, as there is no need for professional tools to move the brush 44 from inside the end cover 11, reducing maintenance costs.

[0023] As a specific embodiment of the transmission assembly, the transmission assembly includes a transmission component 45, a slider 46, and a transmission part. The transmission component 45 is disposed on the transmission column 42. The two ends of the elastic member 43 are respectively located between the transmission component 45 and the fixed shell 41. The slider 46 is slidably connected to the fixed shell 41 in a direction close to or away from the commutator 21. The brush 44 is connected to the slider 46. The transmission part is throttle connected between the transmission component 45 and the slider 46. The transmission component 45 is fixed on the transmission column 42. The two ends of the elastic component 43 act on the transmission component 45 and the fixed shell 41 respectively. The slider 46 can be slidably installed in the fixed shell 41 in the radial direction. The brush 44 is fixed on the slider 46. When the transmission column 42 moves up and down, the power can be transmitted to the transmission part through the transmission component 45. The transmission part converts the power in the up and down direction into the force that drives the slider 46 to move closer to or away from the commutator 21. At this time, the elastic force of the elastic component 43 can act on the transmission component 45, so that the transmission column 42 slides up or down to one end of the stroke, thereby driving the slider 46 to move closer to the commutator 21 through the transmission part.

[0024] The transmission unit can have various structural forms. It can be a two-bar linkage connecting the transmission member 45 and the slider 46, an elastic plate connecting the transmission member 45 and the slider 46, or a gear and rack transmission pair. Racks are connected to the transmission member 45 and the slider 46, and a gear is rotatably connected inside the fixed housing 41. The two racks mesh with the gear. To simplify the overall structure, in this embodiment, the transmission unit includes a transmission rod 47, with both ends hinged between the transmission member 45 and the slider 46. When the transmission column 42 moves upward, power is transmitted to the transmission rod 47 through the transmission member 45. The transmission rod 47 then moves the brush 44 on the slider 46 closer to the commutator 21. When the transmission column 42 moves downward, power is transmitted to the transmission rod 47 through the transmission member 45. The transmission rod 47 then moves the brush 44 on the slider 46 away from the commutator 21. This simple and compact structure converts the vertical displacement of the transmission member 45 into a lateral displacement of the slider 46.

[0025] The transmission component 45 is mainly used to transmit the elastic force of the elastic component 43. It can be a plate-shaped structure or a block-shaped structure, etc. In this embodiment, the transmission component 45 includes a fixed inner sleeve 451 and a movable outer sleeve 452. The fixed inner sleeve 451 is connected to the inner side of the fixed shell 41, and the movable outer sleeve 452 is sleeved on the outer side of the fixed inner sleeve 451. The movable outer sleeve 452 is disposed on the transmission column 42. The elastic component 43 is located inside the fixed inner sleeve 451, and the two ends of the elastic component 43 abut against the ends of the movable outer sleeve 452 and the fixed shell 41, respectively. The fixed inner sleeve 451 and the movable outer sleeve 452 form a telescopic cylindrical structure, which can provide precise guidance and protection for the elastic component 43, so that the elastic force provided by the elastic component 43 is transmitted to the stable movable outer sleeve 452, thereby effectively preventing instability when transmitting power to the transmission component 45.

[0026] In practical applications, the elastic element 43 can be an elastic component such as a spring or rubber, which provides the preload force of the pressure brush 44 to the carbon brush through the movable outer sleeve 452, the transmission element 45, and the transmission part.

[0027] In a brushed motor, when the brush 44 is initially long, the elastic element 43 exerts a large pressure on the brush 44 against the commutator 21, resulting in significant friction and rapid wear. However, as the brushed motor is used for an extended period, the brush 44 gradually shortens, reducing the pressure exerted by the elastic element 43 on the commutator 21. This eventually leads to poor contact between the brush 44 and the commutator 21, hindering current transmission and causing difficulties in starting or normal operation of the motor. To address this issue, [further details are needed]. Figure 3As shown, the power connection unit also includes a clutch assembly 48 disposed between the transmission member 45 and the transmission column 42. The clutch assembly 48 can lock or unlock the transmission member 45 and the transmission column 42. One end of the transmission column 42 located inside the fixed housing 41 abuts against the inner side of the fixed housing 41. When the motor is working, the clutch assembly 48 can lock the transmission member 45 and the transmission column 42 together. At this time, the transmission column 42 is at the end of its stroke. Since the transmission member 45 and the transmission column 42 are connected as one unit, the elastic force of the elastic member 43 will not be transmitted to the brush 44 through the transmission member 45. This effectively prevents the elastic member 43 from continuously pressurizing the brush 44 and causing severe wear of the brush 44. After the motor stops or after a period of time during motor use, the clutch assembly 48 is released from the lock. The elastic force of the elastic member 43 drives the brush 44 to approach the commutator 21 through the transmission member 45, thereby compensating for the wear of the brush 44 and ensuring that the brush 44 maintains effective contact with the commutator 21. Then, the clutch assembly 48 continues to lock the transmission member 45. In this way, the pressure of the elastic member 43 on the brush 44 can be dynamically adjusted, effectively reducing the problem of uneven and excessive wear of the brush 44 caused by the elastic force of the elastic member 43, and significantly extending the service life of the brush 44.

[0028] In addition, unlike current brushed motors where the brush 44 is worn significantly and the spring provides insufficient clamping force due to the shortened length of the brush 44, resulting in the brush 44 failing to form a stable contact with the commutator 21, the above-described implementation method uses a clutch assembly to position the brush 44, ensuring that the brush 44 can stably contact and energize the commutator 21. This method can further improve the utilization rate of the brush 44.

[0029] In the above embodiment, when the clutch assembly 48 locks the transmission member 45 and the transmission column 42 together, the elastic force of the elastic member 43 will drive the transmission column 42 to move to the end of its stroke through the transmission member 45. In the non-energized state, in order to better maintain the position of the transmission column 42, in this embodiment, one end of the transmission column 42 located inside the fixed housing 41 is detachably connected to the inside of the fixed housing 41. For example, the transmission column 42 can be magnetically attracted to the inside of the fixed housing 41, or the transmission column 42 can be connected to the inside of the fixed housing 41 by a snap-fit. During assembly, the transmission column 42 is removed from the inside of the fixed housing 41. At this time, the clutch assembly 48 locks the transmission component 45 and the transmission column 42 together. The transmission column 42 can move up and down, and drives the transmission component 45 to move up and down synchronously. After the assembly is completed, the transmission column 42 is reconnected to the inside of the fixed housing 41, so that the transmission column 42 and the fixed housing 41 are locked together. The clutch assembly 48 dynamically adjusts the state of locking or unlocking the transmission component 45 and the transmission column 42 according to whether it is necessary to counteract the elastic force of the elastic component 43 on the brush 44. In this way, when the transmission column 42 is not needed, connecting the transmission column 42 to the inside of the fixed housing 41 can better maintain the position of the transmission column 42.

[0030] The clutch assembly 48 can be connected to a preset hole using an electromagnetic lock to achieve mutual locking. In this embodiment, the clutch assembly 48 includes a reservoir 481, an energized coil 482, and a locking rod 483. The reservoir 481 is connected to the transmission column 42 and is filled with magnetorheological fluid. The locking rod 483 is connected to the transmission component 45, and one end of the locking rod 483 extends into the reservoir 481. When the energized coil 482 is energized, a magnetic field is generated in the reservoir 481. Naturally, a sealing ring is provided in the reservoir 481 at the position where the locking rod 483 extends, thereby improving the sealing effect on the magnetorheological fluid. When the clutch assembly 48 needs to lock the transmission component 45 and the transmission column 42 together, the energizing coil 482 is energized, which generates a magnetic field in the reservoir 481. At this time, the magnetorheological fluid in the reservoir 481 is a low-flow, high-viscosity fluid, which can lock the locking rod 483, thereby achieving mutual locking between the transmission component 45 and the transmission column 42. When the energizing coil 482 is de-energized, the magnetorheological fluid becomes a high-flow, low-viscosity fluid, and the locking rod 483 can move relative to each other in the reservoir 481, so that the clutch assembly 48 can unlock the transmission component 45 and the transmission column 42.

[0031] To improve the relative locking effect of the locking rod 483 within the reservoir 481, in this embodiment, the inner wall of the reservoir 481 is provided with stop ribs 484 extending in the vertical direction, and multiple stop ribs 484 are spaced around the locking rod 483. The multiple stop ribs 484 increase the contact area between the magnetorheological fluid and the stop ribs 484, thereby enhancing the shear resistance of the magnetorheological fluid in the solidified state, making the locking rod 483 more reliably locked and fixed within the reservoir 481 when the energized coil 482 is in operation.

[0032] The energized coil 482 can be sleeved on the outside of the liquid storage cylinder 481, or it can be set on the locking rod 483. When it is set on the locking rod 483, the locking rod 483 has a hollow structure, and the top of the locking rod 483 has an opening communicating with the interior of the locking rod 483. The energized coil 482 is set inside the locking rod 483. By embedding the energized coil 482 inside the hollow locking rod 483, the energized coil 482 is better protected, the magnetic circuit efficiency is optimized, and the structure is more compact.

[0033] The power connection unit also includes a regulator, which is electrically connected to the energized coil 482. The regulator can control the current flow of the energized coil 482. In practical applications, the regulator can be an electrical component such as a rheostat or a transistor. Through the switch control of the regulator, the transmission component 45 can be locked in the energized state or released in the de-energized state, thus facilitating the release of the locking of the transmission component 45 at intervals during motor operation.

[0034] Furthermore, a pressure sensor is provided between the slider 46 and the brush 44. The pressure sensor is electrically connected to the regulator, which is configured to control the current through the energized coil 482 and ensure that the pressure value detected by the pressure sensor is within a preset threshold. The pressure sensor detects the actual pressure exerted by the brush 44 on the commutator 21 in real time. By electrically connecting the pressure sensor to the regulator, the current through the energized coil 482 is dynamically adjusted based on the real-time pressure value fed back by the pressure sensor, thereby adjusting the degree of solidification of the magnetorheological fluid, i.e., the locking force, so that the pressure of the brush 44 is stabilized within the preset optimal threshold range. In this way, regardless of how the length of the brush 44 changes due to wear, the change in elastic force can be automatically compensated by adjusting the current. Especially when the brush 44 is long, the elastic pressure of the elastic element 43 is large, so that the pressure of the brush 44 remains constant, better solving the problems of excessive pressure and rapid wear in the early stage and insufficient pressure and poor contact in the later stage.

[0035] During production and assembly, since the clutch assembly 48 needs to lock the transmission component 45 and the transmission column 42 together, the brush 44 can be moved closer to or away from the commutator 21 when the transmission column 42 is moved. In order to facilitate the simultaneous connection of the energized coil 482 in the clutch assembly 48 when the transmission column 42 is moved, in this embodiment, a wiring cavity 421 is provided inside the transmission column 42. The wiring cavity 421 extends along the length direction of the transmission column 42. A wiring hole 422 is provided on the outside of the transmission column 42 corresponding to the position of the locking rod 483. The wiring hole 422 is connected to the wiring cavity 421. A slot 423 is provided on the side of the end of the transmission column 42 that extends out of the end cover 11. The wiring cavity 421 is connected to the slot 423. A terminal 424 is provided on the inner side of the slot 423. The energized coil 482 connected inside the locking rod 483 is led to the wiring hole 422 and led out from the wiring cavity 421 to the wiring terminal 424 outside the end cover 11. When the end cover 11 and the housing 1 need to be assembled together, the buckle on the external device moves into the slot 423 of the transmission column 42 and makes an electrical connection with the wiring terminal 424 in the slot 423. At this time, a stable structure and electrical connection with the transmission column 42 can be achieved. When in use, the power supply line of the external device can be connected to the wiring terminal 424 in the slot 423 to energize the internal energized coil 482. By setting the wiring terminal 424 in the slot 423, the wiring is better hidden and protected, and the convenience of transmission and electrical connection during automated assembly production is greatly improved.

[0036] In actual production and assembly, after the end cap 11 is installed into the positioning fixture, the positioning fixture has a pull rod that can move up and down. The pull rod has a locking block that rotates around the up and down direction. The locking block is also provided with an end point for power supply. The pull rod drives the locking block to move into the slot 423. The locking block rotates into the slot 423, thus realizing the structural connection between the locking block and the slot 423. The power supply end point on the locking block is connected to the wiring end point 424 to realize the power supply to the energized coil 482.

[0037] For the electrical components such as the brush 44 inside the motor to conduct electricity, the connecting wire can be led out from the wiring cavity 421 to the terminal 424 in the slot 423 to achieve conductive connection during use.

[0038] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A fast fit motor characterised in that: include: The housing (1) has an end cap (11) at one end, and a bearing chamber (12) is provided inside the end cap (11). The rotor assembly has an output shaft (2) rotatably connected between the housing (1) and the bearing chamber (12), with one end of the output shaft (2) extending out of the housing (1) away from the bearing chamber (12), and a commutator (21) provided on the output shaft (2) near the bearing chamber (12). Stator assembly (3) is disposed inside the housing (1) and the stator assembly (3) is located outside the rotor assembly; The power connection unit includes a fixed housing (41), a transmission column (42), a transmission assembly, an elastic element (43), and a brush (44). The fixed housing (41) is connected to the inside of the end cover (11). The transmission column (42) is movably disposed in the fixed housing (41) in the vertical direction. One end of the transmission column (42) passes through the fixed housing (41) and extends out of the end cover (11). The transmission assembly is tractively connected between the brush (44) and the transmission column (42). The transmission column (42) can drive the brush (44) to move in a direction close to or away from the commutator (21) through the transmission assembly. The elastic element (43) is disposed between the transmission assembly and the fixed housing (41). The elastic element (43) has a tendency to drive the brush (44) to approach and abut against the commutator (21) through the transmission assembly. At least two power connection units are provided around the commutator (21).

2. A quick-mount motor according to claim 1, characterized in that: The transmission assembly includes a transmission component (45), a slider (46), and a transmission part. The transmission component (45) is disposed on the transmission column (42). The two ends of the elastic member (43) are respectively located between the transmission component (45) and the fixed shell (41). The slider (46) is slidably connected to the fixed shell (41) in a direction close to or away from the commutator (21). The brush (44) is connected to the slider (46). The transmission part is throttle connected between the transmission component (45) and the slider (46).

3. A quick-installation motor according to claim 2, characterized in that: The transmission unit includes a transmission rod (47), the two ends of which are respectively hinged between the transmission member (45) and the slider (46).

4. A quick-installation motor according to claim 2, characterized in that: The transmission component (45) includes a fixed inner sleeve (451) and a movable outer sleeve (452). The fixed inner sleeve (451) is connected to the inner side of the fixed shell (41), and the movable outer sleeve (452) is sleeved on the outer side of the fixed inner sleeve (451). The movable outer sleeve (452) is disposed on the transmission column (42). The elastic element (43) is located inside the fixed inner sleeve (451), and the two ends of the elastic element (43) abut against the ends of the movable outer sleeve (452) and the fixed shell (41), respectively.

5. A quick-installation motor according to claim 2, characterized in that: The power connection unit also includes a clutch assembly (48) disposed between the transmission member (45) and the transmission column (42). The clutch assembly (48) can lock or unlock the transmission member (45) and the transmission column (42). One end of the transmission column (42) located inside the fixed shell (41) abuts against the inner side of the fixed shell (41).

6. A quick-installation motor according to claim 5, characterized in that: The transmission column (42) is detachably connected to the inside of the fixed housing (41) at one end.

7. A quick-installation motor according to claim 5, characterized in that: The clutch assembly (48) includes a reservoir (481), an energized coil (482), and a locking rod (483). The reservoir (481) is connected to the transmission column (42). The reservoir (481) is filled with magnetorheological fluid. The locking rod (483) is connected to the transmission component (45). One end of the locking rod (483) extends into the reservoir (481). When the energized coil (482) is energized, a magnetic field is generated in the reservoir (481).

8. A quick-installation motor according to claim 7, characterized in that: The inner wall of the liquid storage cylinder (481) is provided with stop ribs (484) extending in the vertical direction, and multiple stop ribs (484) are provided around the locking rod (483) at intervals.

9. A quick-installation motor according to claim 7, characterized in that: The locking rod (483) has a hollow structure. The top of the locking rod (483) is provided with an opening that communicates with the interior of the locking rod (483). The energized coil (482) is disposed inside the locking rod (483).

10. A quick-installation motor according to claim 9, characterized in that: The transmission column (42) has a wiring cavity (421) inside, which extends along the length of the transmission column (42). A wiring hole (422) is provided on the outside of the transmission column (42) corresponding to the position of the locking rod (483). The wiring hole (422) is connected to the wiring cavity (421). A slot (423) is provided on the side of the end of the transmission column (42) that extends out of the end cap (11). The wiring cavity (421) is connected to the slot (423). A terminal block (424) is provided inside the slot (423).

Images