Brushless motor structure for miniature electric hoist

Abstract

The utility model relates to the technical field of electric hoists, and particularly discloses a brushless motor structure for a miniature electric hoist, which comprises a middle cover, a brushless rotor, a wind shield ring, a stator assembly, a motor shell, a control module assembly and a motor rear cover, and is characterized in that the middle cover and the motor rear cover are detachably mounted at the front end and the rear end of the motor shell respectively; one end of the middle cover is connected with a gear transmission mechanism of the whole machine, the other end of the middle cover is rotationally connected with the brushless rotor through a brushless rotor front bearing, the brushless direct current motor is adopted, the advantages of high efficiency, long service life, low noise, low heating and the like are achieved, and the performance and reliability of the miniature electric hoist are improved; the motor shell and the motor rear cover are respectively provided with heat dissipation holes, the overall heat dissipation effect is improved, stable work of the motor is guaranteed, the motor is simple and compact in structure and easy to maintain, and the use cost and the maintenance difficulty of a user are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric hoists, in particular to a brushless motor structure used for a micro electric hoist. Background Art

[0002] Micro electric hoist is a kind of equipment commonly used for light material handling, with the characteristics of small size, light weight, simple operation and high efficiency. It is widely used in factories, warehouses, workshops and other places, especially in the case of limited space or high-precision material handling, it plays an important role.

[0003] Traditional micro electric hoists usually use brushed motors, which are the core components of micro electric hoists. Although brushed motors have a simple structure and low cost, their working efficiency is also low and maintenance is more frequent because the wear and replacement of carbon brushes are common problems. Therefore, electric hoists with brushed motors have problems such as high maintenance cost, low efficiency, easy wear of carbon brushes, and high heat generation. With the development of technology, brushless motors have gradually been widely used due to their advantages such as high efficiency, long life, low noise and low heat generation. Micro electric hoists using brushless motors will achieve higher efficiency, lower maintenance costs and longer service life. To this end, the utility model proposes a brushless motor structure for micro electric hoists to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a brushless motor structure for a micro electric hoist to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a brushless motor structure for a micro electric hoist, comprising: an intermediate cover, a brushless rotor, a wind shield, a stator assembly, a motor housing, a control module assembly and a motor rear cover, wherein the intermediate cover and the motor rear cover are detachably mounted on the front and rear ends of the motor housing, respectively, one end of the intermediate cover is connected to the gear transmission mechanism of the whole machine, and the other end is rotatably connected to the brushless rotor through the brushless rotor front bearing;

[0006] The stator assembly is installed inside the motor housing through a wind shield, and the control module assembly is installed inside the tail end of the motor housing.

[0007] Preferably, the middle cover and the inner ends of the motor housing are both provided with bearing grooves, the front bearing of the brushless rotor is installed on the inner side of the middle cover through the bearing groove, and the rear bearing of the brushless rotor is installed on the inner end of the motor housing through the bearing groove.

[0008] Preferably, the middle cover is fixedly mounted on one end of the motor housing by means of middle cover screws, and the motor rear cover is fixedly mounted on the other end of the motor housing by means of motor rear cover screws.

[0009] Preferably, the stator assembly is fixedly installed by means of a stator screw, and one end of the stator screw passes through the wind shield and the stator assembly.

[0010] Preferably, one end of the brushless rotor passes through the wind shield and the stator assembly and is rotatably connected to the rear cover of the motor.

[0011] Preferably, the control module assembly is fixedly mounted on the outer end of the motor housing by means of control module fixing screws, and the control module assembly is located inside the rear cover of the motor.

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

[0013] The brushless DC motor is adopted, which has the advantages of high efficiency, long life, low noise and low heat generation, etc., which improves the performance and reliability of the micro electric hoist; the motor casing and the motor back cover are respectively provided with heat dissipation holes, which improves the overall heat dissipation effect and ensures the stable operation of the motor. The utility model has a simple and compact structure and is easy to maintain, which reduces the user's use cost and maintenance difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an exploded view of the overall structure of the utility model;

[0015] Figure 2 It is a side view of the overall structure of the utility model;

[0016] Figure 3 It is a schematic cross-sectional view of the overall structure of the utility model.

[0017] In the figure: 1. middle cover; 2. front bearing of brushless rotor; 3. brushless rotor; 4. stator screw; 5. rear bearing of brushless rotor; 6. wind shield; 7. stator assembly; 8. motor housing; 9. middle cover screw; 10. control module assembly; 11. control module fixing screw; 12. motor rear cover; 13. motor rear cover screw. DETAILED DESCRIPTION

[0018] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 3The utility model provides a technical solution: a brushless motor structure for a micro electric hoist, comprising: an intermediate cover 1, a brushless rotor 3, a wind shield 6, a stator assembly 7, a motor housing 8, a control module assembly 10 and a motor back cover 12, the intermediate cover 1 and the motor back cover 12 are detachably mounted on the front and rear ends of the motor housing 8 respectively, the inner ends of the intermediate cover 1 and the motor housing 8 are both provided with bearing grooves, the front bearing 2 of the brushless rotor is mounted on the inner side of the intermediate cover 1 through the bearing groove, the rear bearing 5 of the brushless rotor is mounted on the inner end of the motor housing 8 through the bearing groove, the intermediate cover 1 is fixedly mounted on one end of the motor housing 8 through the intermediate cover screws 9, and the motor back cover 12 is fixedly mounted on the other end of the motor housing 8 through the motor back cover screws 13, the motor back cover 12 is mainly used to protect the internal components of the motor from being affected by the external environment, and to prevent impurities such as dust and water vapor from entering the motor, thereby affecting the normal operation of the motor; at the same time, the motor back cover 12 can also make the structure of the motor more rigorous, so that the insulation performance of the motor is better protected.

[0020] One end of the middle cover 1 is connected to the gear transmission mechanism of the whole machine, and the other end is rotatably connected to the brushless rotor 3 through the brushless rotor front bearing 2. The brushless rotor 3 is rotatably connected through the brushless rotor rear bearing 5 installed in the motor housing 8, and the power of the brushless motor is transmitted to the gear transmission mechanism through the middle cover 1.

[0021] The stator assembly 7 is installed inside the motor housing 8 through the stator screws 4 and the wind shield 6. The wind shield 6 can prevent dust and protect the motor, and can also improve the working efficiency of the motor. One end of the brushless rotor 3 passes through the wind shield 6 and the stator assembly 7 and is rotatably connected to the motor rear cover 12. The control module assembly 10 is installed inside the tail end of the motor housing 8. The control module assembly 10 is fixedly installed on the outer end of the motor housing 8 through the control module fixing screws 11, and the control module assembly 10 is located in the motor rear cover 12, which can control the start and stop, speed control, direction control and displacement control of the brushless motor.

[0022] In actual use, it is connected to the front-end gear transmission structure through the middle cover 1. The middle cover 1 is usually an aluminum machined part, and a bearing groove is processed at the position connected with the brushless rotor 3. The brushless rotor 3 is connected to the middle cover 1 through the brushless rotor front bearing 2, and the kinetic energy is transmitted to the front-end gear transmission mechanism through the middle cover 1 by the brushless motor; the tail of the brushless rotor 3 is also equipped with a brushless rotor rear bearing 5, which is connected to the bearing groove in the motor housing 8 through the brushless rotor rear bearing 5. The motor housing 8 is also an aluminum machined part. The left and right sides of the motor housing 8 are respectively provided with heat dissipation holes to discharge the heat generated by the brushless motor during operation in time to ensure the performance of the brushless motor.

[0023] The stator assembly 7 is installed inside the motor housing 8 and is fixed on the top of the stator assembly 7 by means of a wind shield 6 to prevent the stator assembly 7 from moving up and down inside the motor housing 8. The stator screw 4 passes through the wind shield 6 and the stator assembly 7 and is locked in the threaded hole inside the motor housing 8. The wind shield 6 is located at the top of the stator assembly 7 to effectively protect the internal parts of the motor from being affected by the external environment.

[0024] The middle cover 1 is connected and locked to the motor housing 8 through the middle cover screws 9. The control module assembly 10 is installed in the rear part of the motor housing 8. The control module fixing screws 11 pass through the through holes on both sides of the control module assembly 10 and are locked on the motor housing 8 to prevent the control module assembly 10 from moving at the bottom of the motor housing and affecting the motor performance. The motor rear cover 12 is also an aluminum processed part. The motor rear cover 12 is installed at the rear part of the motor housing 8 and is locked and fixed by the motor rear cover screws 13. The motor rear cover 12 can make the structure of the brushless motor more rigorous and have the effect of heat dissipation, so that the insulation performance of the brushless motor can be better protected.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A brushless motor structure for a micro electric hoist, comprising: An intermediate cover (1), a brushless rotor (3), a wind shield (6), a stator assembly (7), a motor housing (8), a control module assembly (10) and a motor rear cover (12), characterized in that: the intermediate cover (1) and the motor rear cover (12) are detachably mounted on the front and rear ends of the motor housing (8), one end of the intermediate cover (1) is connected to the gear transmission mechanism of the whole machine, and the other end is rotatably connected to the brushless rotor (3) through the brushless rotor front bearing (2); The stator assembly (7) is installed inside the motor housing (8) through a wind shield (6), and a control module assembly (10) is installed inside the tail end of the motor housing (8).

2. A brushless motor structure for a micro electric hoist according to claim 1, characterized in that: The inner ends of the intermediate cover (1) and the motor housing (8) are both provided with bearing grooves, the front bearing (2) of the brushless rotor is installed on the inner side of the intermediate cover (1) through the bearing groove, and the rear bearing (5) of the brushless rotor is installed on the inner end of the motor housing (8) through the bearing groove.

3. The brushless motor structure for a micro electric hoist according to claim 1, characterized in that: The middle cover (1) is fixedly mounted on one end of the motor housing (8) by means of middle cover screws (9), and the motor rear cover (12) is fixedly mounted on the other end of the motor housing (8) by means of motor rear cover screws (13).

4. The brushless motor structure for a micro electric hoist according to claim 1, characterized in that: The stator assembly (7) is fixedly installed by means of a stator screw (4), and one end of the stator screw (4) passes through the wind shield (6) and the stator assembly (7).

5. The brushless motor structure for a micro electric hoist according to claim 1, characterized in that: One end of the brushless rotor (3) passes through the wind shield (6) and the stator assembly (7) and is rotatably connected to the motor rear cover (12).

6. A brushless motor structure for a micro electric hoist according to claim 5, characterized in that: The control module assembly (10) is fixedly mounted on the outer end of the motor housing (8) via control module fixing screws (11), and the control module assembly (10) is located inside the motor rear cover (12).

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