A brushless reduction motor capable of prolonging service life

Abstract

The utility model discloses a kind of brushless reduction motor capable of prolonging service life, including motor body and reduction gearbox, motor body includes motor shell, rotatable output shaft is equipped in motor shell, the side of motor shell is equipped with first oil seal close to reduction gearbox, first oil seal is slidably sealed with output shaft;Reduction gearbox includes box and end cover, rotatable drive shaft is equipped in box, drive shaft one end extends end cover, second oil seal is equipped on end cover, second oil seal is slidably sealed with drive shaft;First installation groove is equipped on motor shell, first sealing ring is equipped in first installation groove, first sealing ring is sealed with box abutment, second installation groove is equipped on end cover, second sealing ring is equipped in second installation groove, second sealing ring is sealed with box abutment.The utility model improves the sealing of reduction gearbox, solves the problem of lubricating oil leakage in box, can prolong the service life of reduction gearbox, to prolong the service life of motor.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a brushless geared motor that can extend its service life. Background Technology

[0002] A geared motor is an integrated unit consisting of a gearbox and a motor. Due to its compact structure, small size, smooth operation, and low noise, geared motors are widely used in many automation industries, including the steel and machinery industries. A geared motor mainly consists of two parts: a motor and a gearbox. The motor's output shaft extends into the gearbox, and power is then output from the gearbox's output shaft through one or more stages of gear reduction.

[0003] To ensure lubrication and cooling between gears within the gear reducer, a certain amount of lubricating oil is typically injected into the reducer housing. However, existing gear reducers on geared motors often lack proper sealing. During motor operation, the high-speed rotating gears inside the reducer throw up the lubricating oil, causing it to splash into the gaps within the housing and leak outwards. As the amount of lubricating oil inside the housing decreases, it inevitably affects the lubrication and cooling of the gears, leading to wear or malfunctions and impacting the motor's lifespan. Utility Model Content

[0004] To address some or all of the problems existing in the prior art, this utility model provides a brushless geared motor with extended service life, comprising a motor body, a gearbox, and a brake. The motor body includes a motor housing, within which a rotatable output shaft is disposed. One end of the output shaft is connected to the gearbox, and the other end is connected to the brake. The brake is used to control the output shaft to stop rotating. A first oil seal is provided on the side of the motor housing near the gearbox, the first oil seal being sleeved around the output shaft and slidably sealed to the output shaft. The gearbox includes a housing and end caps. One end of the housing is connected to the motor housing, and the other end is connected to the end cover. A rotatable drive shaft is provided inside the housing and is connected to an output shaft. One end of the drive shaft extends out of the end cover. A second oil seal is provided on the end cover and is fitted onto the drive shaft, and is slidably sealed to the drive shaft. A first mounting groove is provided at one end of the motor housing near the housing, and a first sealing ring is provided in the first mounting groove. The first sealing ring is sealed against the housing. A second mounting groove is provided at one end of the end cover near the housing, and a second sealing ring is provided in the second mounting groove. The second sealing ring is sealed against the housing.

[0005] As a further improvement of this utility model, the end cover is provided with connecting bolts, which pass through the end cover and the housing in sequence and are then connected and fixed to the motor housing.

[0006] As a further improvement of this utility model, there are four connecting bolts, and the four connecting bolts are distributed in a circumferential array on the end cap.

[0007] As a further improvement of this utility model, a stator assembly is provided inside the motor housing, and a rotor assembly is sleeved on the output shaft. The stator assembly is sleeved around the rotor assembly, and the stator assembly and the rotor assembly are in clearance fit.

[0008] As a further improvement of this utility model, a circuit board is provided inside the motor housing, and the stator assembly is electrically connected to the circuit board.

[0009] As a further improvement of this utility model, a gear set is provided inside the housing, the input end of the gear set is connected to the output shaft, and the output end of the gear set is connected to the drive shaft.

[0010] As a further improvement of this utility model, the brake includes a mounting base, which is connected to the motor housing. A brake base is provided on the mounting base, and a brake fixing seat is sleeved on the output shaft. A brake pad is provided on the brake fixing seat, and the brake pad is clearance-fitted with the brake base. The brake pad can be connected to the brake base when energized.

[0011] As a further improvement of this utility model, the mounting base is provided with a protective cover, which is sleeved around the brake mounting base and the brake pad.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention, by setting a first sealing ring, a second sealing ring, a first oil seal, and a second oil seal, makes the gearbox a completely sealed cavity, improving the gearbox's sealing performance, solving the problem of lubricating oil leakage inside the gearbox, and extending the service life of the gearbox, thereby extending the service life of the motor. Actual tests show that using the technical solution of this invention, the service life of the brushless motor can be extended by 3-5 times. Attached Figure Description

[0014] To more clearly illustrate the solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the external structure of an embodiment of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of an embodiment of this utility model. Detailed Implementation

[0017] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used in the specification is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0018] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention can be combined with other embodiments.

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0020] like Figure 1-2 As shown, a brushless geared motor with extended service life includes a motor body 100, a gearbox 200, and a brake 300, the brake 300 being used for braking.

[0021] The motor body 100 includes a motor housing 1, within which a rotatable output shaft 2 is housed. One end of the output shaft 2 is connected to a reduction gearbox 200, which reduces the rotational speed and increases torque. The other end of the output shaft 2 is connected to a brake 300, which brakes the output shaft 2 and stops its rotation. A first oil seal 3 is provided on the side of the motor housing 1 near the reduction gearbox 200. The first oil seal 3 is fitted around the output shaft 2 and is slidably sealed to it. The first oil seal 3 seals the mating area between the output shaft 2 and the motor housing 1, thus preventing lubricating oil from the reduction gearbox 200 from leaking through the rotational clearance of the output shaft 2.

[0022] The gearbox 200 includes a housing 4 and an end cover 5. One end of the housing 4 is connected to the motor housing 1, and the other end is connected to the end cover 5. A rotatable drive shaft 6 is provided inside the housing 4. The drive shaft 6 is connected to the output shaft 2, and one end of the drive shaft 6 extends out of the end cover 5. A second oil seal 7 is provided on the end cover 5. The second oil seal 7 is sleeved on the drive shaft 6 and is in a sliding sealing connection with the drive shaft 6. The second oil seal 7 can seal the mating area between the drive shaft 6 and the end cover 5, thereby preventing the lubricating oil in the gearbox 200 from leaking out from the rotational clearance of the drive shaft 6.

[0023] The motor housing 1 has a first mounting groove 11 at one end near the housing 4, and a first sealing ring 8 is provided in the first mounting groove 11, which seals against the housing 4. By providing the first sealing ring 8, the mating gap between the housing 4 and the motor housing 1 can be sealed, preventing lubricating oil inside the housing 4 from leaking out through the mating gap. The end cover 5 has a second mounting groove 51 at one end near the housing 4, and a second sealing ring 9 is provided in the second mounting groove 51, which seals against the housing 4. By providing the second sealing ring 9, the mating gap between the housing 4 and the end cover 5 can be sealed, preventing lubricating oil inside the housing 4 from leaking out through the mating gap.

[0024] The brushless geared motor, which can extend its service life, forms a closed cavity in the housing 4 by setting a first oil seal 3, a second oil seal 7, a first sealing ring 8, and a second sealing ring 9, which facilitates the storage of lubricating oil in the housing 4. By improving the sealing performance of the gearbox 200, the problem of lubricating oil leakage in the housing 4 is solved, which can extend the service life of the gearbox 200, thereby extending the service life of the motor.

[0025] To ensure a stable connection between the end cover 5, the housing 4, and the motor housing 1, multiple connecting bolts 10 are provided on the end cover 5. These connecting bolts 10 pass through the end cover 5 and the housing 4 in sequence and are then connected and fixed to the motor housing 1. By connecting and fixing the end cover 5, the housing 4, and the motor housing 1 with the connecting bolts 10, the positional relationship of the three components remains constant, improving the stability of the structure and further ensuring the sealing of the housing 4, thus reducing the possibility of lubricating oil leakage inside the housing 4.

[0026] In this embodiment, there are four connecting bolts 10, and the four connecting bolts 10 are arranged in a circular array on the end cap 5; in other embodiments, the number of connecting bolts 10 can also be any other number.

[0027] The housing 4 houses a gear set 12. The input end of the gear set 12 is connected to the output shaft 2, and the output end of the gear set 12 is connected to the drive shaft 6. The housing 4 is filled with lubricating oil, which lubricates the transmission of the gear set 12, improving the stability of the transmission. During operation, the transmission of the gear set 12 reduces rotation and increases torque. The specific structure of the gear set 12 can adopt any existing design, and this invention does not limit this.

[0028] A stator assembly 13 is housed within the motor housing 1, and a rotor assembly 14 is sleeved on the output shaft 2. The stator assembly 13 is fitted around the rotor assembly 14 with a clearance fit. A circuit board 15 is also housed within the motor housing 1, and the stator assembly 13 is electrically connected to the circuit board 15. The circuit board 15 is used for connecting an external power supply and control equipment. During operation, the external control equipment sends a control signal to the circuit board 15, which then powers on the stator assembly 13. Powering on the stator assembly 13 drives the rotor assembly 14 to rotate, which in turn drives the output shaft 2 to rotate. The output shaft 2 then drives the gear set 12 and the drive shaft 6 to rotate. The structures of the stator assembly 13 and the rotor assembly 14 can be any existing design, and this invention does not limit their specific structures.

[0029] The brake 300 includes a mounting base 16, which is fixedly connected to the motor housing 1. A brake base 17 is fixedly mounted on the mounting base 16. A brake fixing seat 18 is sleeved on the output shaft 2, and the brake fixing seat 18 is slidably connected to the output shaft 2. A brake pad 19 is provided on the brake fixing seat 18, and the brake pad 19 is clearance-fitted with the brake base 17. When energized, the brake pad 19 drives the brake fixing seat 18 to move axially on the output shaft 2 until the brake pad 19 contacts the brake base 17. The braking function of the output shaft 2 is achieved through the abutting engagement between the brake pad 19 and the brake base 17.

[0030] The mounting base 16 is provided with a protective cover 20, which is fitted around the brake mounting base 18 and the brake pad 19. When the motor is working, the brake pad 19 and the brake mounting base 18 will rotate synchronously with the output shaft 2. By setting the protective cover 20, the brake pad 19 and the brake mounting base 18 can be enclosed inside, preventing the rotating parts from being exposed. On the other hand, by covering the brake pad 19 and the brake mounting base 18 with the protective cover 20, the power signal wires and other wiring harnesses on the motor can be routed from the tail of the motor, avoiding problems such as the moving parts causing tangling of the wiring harness, thereby facilitating wiring and routing and improving the convenience of operation.

[0031] The above-described specific embodiments are preferred embodiments of this utility model, and are not intended to limit the specific scope of this utility model. The scope of this utility model includes but is not limited to the specific embodiments described above. All equivalent changes made in accordance with this utility model are within the protection scope of this utility model.

Claims

1. A brushless geared motor capable of extending service life, characterized in that: The device includes a motor body, a gearbox, and a brake. The motor body includes a motor housing, inside which is a rotatable output shaft. One end of the output shaft is connected to the gearbox, and the other end is connected to the brake. The brake is used to control the output shaft to stop rotating. A first oil seal is provided on the side of the motor housing near the gearbox. The first oil seal is sleeved around the output shaft and is slidably sealed to the output shaft. The gearbox includes a housing and an end cover. One end of the housing is connected to the motor housing, and the other end is connected to the end cover. A rotatable drive shaft is provided inside the housing. The drive shaft is connected to an output shaft. One end of the drive shaft extends out of the end cover. A second oil seal is provided on the end cover. The second oil seal is sleeved on the drive shaft and is slidably sealed to the drive shaft. The motor housing has a first mounting groove at one end near the box body, and a first sealing ring is provided in the first mounting groove. The first sealing ring is in sealing contact with the box body. The end cover has a second mounting groove at one end near the box body, and a second sealing ring is provided in the second mounting groove. The second sealing ring is in sealing contact with the box body.

2. The brushless geared motor with extended service life according to claim 1, characterized in that: The end cover is provided with connecting bolts, which pass through the end cover and the housing in sequence and are then connected and fixed to the motor housing.

3. The brushless geared motor with extended service life according to claim 2, characterized in that: There are four connecting bolts, and the four connecting bolts are arranged in a circumferential array on the end cap.

4. The brushless geared motor with extended service life according to claim 1, characterized in that: The motor housing contains a stator assembly, and the output shaft is fitted with a rotor assembly. The stator assembly is fitted around the rotor assembly, and the stator assembly and the rotor assembly are clearance-fitted.

5. The brushless geared motor with extended service life according to claim 4, characterized in that: The motor housing contains a circuit board, and the stator assembly is electrically connected to the circuit board.

6. The brushless geared motor with extended service life according to claim 1, characterized in that: The housing contains a gear set, the input end of which is connected to the output shaft, and the output end of which is connected to the drive shaft.

7. The brushless geared motor with extended service life according to any one of claims 1-6, characterized in that: The brake includes a mounting base connected to the motor housing. A brake base is provided on the mounting base. A brake fixing seat is sleeved on the output shaft. A brake pad is provided on the brake fixing seat. The brake pad is clearance-fitted with the brake base, and the brake pad can connect to the brake base when energized.

8. The brushless geared motor with extended service life according to claim 7, characterized in that: The mounting base is provided with a protective cover, which is fitted around the brake mounting base and the brake pads.

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