Motor rear end cover

Abstract

The utility model relates to the technical field of motor parts, and discloses a rear end cover of a motor, which comprises a rear end cover body and a rear rotating shaft rotationally limited on the rear end cover body, the outer end surface of the rear end cover body is recessed inwards to form an accommodating cavity for mounting a bearing, and the bottom of the accommodating cavity is provided with a through hole for the rear rotating shaft to penetrate through. The motor rear end cover comprises a rear end cover body, a through hole is formed in the rear end cover body, a rear rotating shaft penetrates through the through hole and then is fixedly arranged on an inner ring of the bearing in a penetrating mode, an opening for exposing the end face of the bearing is formed in the outer side of the containing cavity, and an opening and closing mechanism used for closing or opening the opening is arranged on the outer side of the rear end cover body. And the trouble of dismounting the rear end cover of the motor can be effectively saved, so that the operation efficiency and convenience are improved. The opening and closing mechanism can effectively open or close the opening, so that a worker can conveniently add lubricating oil or protect the bearing, the service life of the bearing is prolonged, and the stability of the motor during operation is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor component technology, and in particular to a motor rear end cover. Background Technology

[0002] An electric motor, also known as a motor, is a device that converts electrical energy into mechanical energy. It is widely used in industrial manufacturing, transportation, and household appliances. For example... Figure 1 The diagram shows the internal structure of a conventional motor, mainly comprising a housing 30 and a front cover 31 and a rear cover 32 respectively attached to the front and rear sides of the housing 30. A rotor 33 is housed within the housing 30. A front shaft 34 and a rear shaft 2 are coaxially mounted at the front and rear ends of the rotor 33, respectively. The front shaft 34 and rear shaft 2 are rotatably confined on the front cover 31 and rear cover 32, respectively, thus limiting the rotor 33. The front shaft 34 extends to the outside of the front cover 31 to connect to an external load, thereby achieving power output. The rear shaft 2 is mounted on the rear cover 32 via a bearing 3. To prevent dust from entering the bearing 3, it is typically sealed within the rear cover 32. However, this sealed design makes maintenance difficult, especially when adding lubricating oil, requiring the disassembly of the rear cover 32, which is cumbersome and requires improvement. Utility Model Content

[0003] This invention addresses the shortcomings of existing technologies by providing a motor rear end cover. Through the opening on the rear end cover body, lubricating oil can be quickly added to the bearing without disassembling the entire motor rear end cover, making operation more convenient.

[0004] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0005] A motor rear end cover includes a rear end cover body and a rear rotating shaft that is rotatably restricted on the rear end cover body. The outer end face of the rear end cover body is recessed inward to form a receiving cavity for mounting a bearing. The bottom of the receiving cavity has a through hole for the rear rotating shaft to pass through. The rear rotating shaft passes through the through hole and is fixedly mounted on the inner ring of the bearing. The outer side of the receiving cavity has an opening for exposing the end face of the bearing. The outer side of the rear end cover body is provided with an opening and closing mechanism for closing or opening the opening.

[0006] By adopting the above solution, adding lubricating oil to the bearing inside the accommodating cavity through the opening effectively eliminates the hassle of disassembling the rear end cover of the motor, thereby improving operational efficiency and convenience. The opening and closing mechanism can effectively open or close the opening to facilitate the addition of lubricating oil or the protection of the bearing, thereby extending the bearing's service life and improving the stability of the motor during operation.

[0007] Preferably, the opening and closing mechanism includes an upper cover and a lower cover that are longitudinally separated along the outer end face of the rear cover body in a first state to expose the opening, or longitudinally closed along the outer end face of the rear cover body in a second state to close the opening, and a locking mechanism is provided between the upper cover and the lower cover to keep them in the second state.

[0008] By adopting the above scheme, the longitudinal opening and closing of the upper and lower covers can achieve both complete exposure and complete closure of the opening, thereby improving the effectiveness of the opening and closing mechanism. The locking mechanism can lock the upper and lower covers in the second state, thereby ensuring the stability of the upper and lower covers when closed and preventing them from opening automatically when the motor is running.

[0009] Preferably, the upper cover has an upper shroud that slides against the outer end face of the rear cover body on the side edge away from the lower cover, and the lower cover has a lower shroud that slides against the outer end face of the rear cover body on the side edge away from the upper cover.

[0010] By adopting the above solution, the upper and lower panels can not only improve the wrapping effect of the upper and lower covers, thereby improving the dustproof effect when the opening is closed, but also block excess lubricating oil when the upper and lower covers are opened and lubricating oil is added, preventing excess lubricating oil from running all over the end face of the rear cover body, making the exterior of the rear cover body cleaner.

[0011] Preferably, the locking mechanism includes an upper locking member and a lower locking member respectively disposed on the side of the upper cover and the lower cover away from the rear cover body, and the upper locking member and the lower locking member are fixed by screws.

[0012] Preferably, the upper locking member has a through hole for screws to pass through, and the lower locking member has a threaded hole for screws to be threaded.

[0013] By using the above solution, the upper and lower locking components are fixed with screws, ensuring the upper and lower covers are securely closed. Furthermore, the screws are easy to install and remove, resulting in low replacement costs and contributing to cost reduction and efficiency improvement.

[0014] Preferably, upper sliding sleeves are provided on both sides of the upper cover, lower sliding sleeves are provided on both sides of the lower cover, and guide rods are provided longitudinally on both sides of the opening for sliding cooperation between the two upper sliding sleeves and the two lower sliding sleeves.

[0015] By adopting the above scheme, the sliding cooperation between the upper and lower sliding sleeves and the guide rod can realize the longitudinal sliding of the upper and lower caps and ensure the stability and smoothness of the sliding.

[0016] Preferably, the outer end face of the rear cover body and one side of the opening are provided with a limiting member for longitudinally blocking the sliding sleeve and the sliding sleeve.

[0017] By adopting the above solution, the blocking effect of the limiting component can ensure the precise closure of the upper and lower covers, further improving the efficiency and convenience of closing the opening.

[0018] Preferably, the lower surface of the upper sliding sleeve and the upper surface of the lower sliding sleeve are respectively provided with an upper clearance groove and a lower clearance groove for the limiting component to engage.

[0019] By adopting the above solution, the upper and lower clearance grooves can prevent gaps from appearing when the upper and lower covers are closed, further improving the sealing effect of the opening and closing mechanism.

[0020] Preferably, both ends of the guide rod are provided with connecting seats that are fixed to the rear end cover body.

[0021] By adopting the above solution, the connecting seat can not only ensure the stability of the guide rod installation, but also play a role in limiting and preventing detachment, thus preventing the upper and lower sliding sleeves from falling off the guide rod, thereby ensuring the stability of the upper and lower caps during use.

[0022] Preferably, the upper end of the upper cover is provided with an upper grip, the lower end of the lower cover is provided with a lower grip, and the outer end face of the rear cover body is detachably connected with a screw for locking the upper grip to restrict the upper cover to a first state.

[0023] The above design makes it easier for the upper and lower grips to bear force, effectively improving the efficiency and convenience for operators when handling the upper and lower caps. By using screws to restrain the upper cap in its first position, it prevents the cap from sliding down the guide rod after opening, further enhancing the ease of operation when adding lubricating oil.

[0024] This utility model, by adopting the above technical solution, has significant technical effects: adding lubricating oil to the bearing inside the accommodating cavity through the opening effectively eliminates the hassle of disassembling the rear end cover of the motor, thereby improving operational efficiency and convenience. The opening and closing mechanism can effectively open or close the opening to facilitate the addition of lubricating oil or the protection of the bearing, thereby extending the bearing's service life and improving the stability of the motor during operation. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the internal structure of an electric motor in the prior art;

[0026] Figure 2 This is a schematic diagram of the structure when the upper and lower caps are in the second state in this embodiment;

[0027] Figure 3 for Figure 2 An enlarged schematic diagram of part A shown;

[0028] Figure 4 This is a schematic diagram of the structure when the upper and lower caps are in the first state in this embodiment;

[0029] Figure 5 for Figure 4 An enlarged schematic diagram of part B is shown below;

[0030] Figure 6 This is an exploded view of this embodiment;

[0031] Figure 7 for Figure 6 An enlarged schematic diagram of section C is shown;

[0032] Figure 8 This is a schematic diagram of the back structure of the rear cover body in this embodiment;

[0033] Figure 9 for Figure 8 An enlarged schematic diagram of part D is shown.

[0034] The parts referred to by the numbers in the above attached figures are as follows: 1. Rear end cover body; 2. Rear shaft; 3. Bearing; 4. Accommodating cavity; 6. Through hole; 7. Inner ring; 8. Opening; 9. Upper cover; 10. Lower cover; 11. Upper enclosure plate; 12. Lower enclosure plate; 13. Upper locking element; 14. Lower locking element; 15. Screw; 16. Through hole; 17. Threaded hole; 18. Upper sliding sleeve; 19. Lower sliding sleeve; 20. Guide rod; 21. Limiting element; 22. Upper clearance groove; 23. Lower clearance groove; 24. Connecting seat; 25. Upper grip; 26. Lower grip; 27. Outer ring; 28. Guide arc surface; 29. ​​Screw hole; 30. Housing; 31. Front end cover; 32. Rear end cover; 33. Rotor; 34. Front shaft; 35. Mounting hole. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0036] like Figures 2 to 9As shown, this embodiment discloses a motor rear end cover, including a rear end cover body 1 and a rear rotating shaft 2 whose rotation is restricted on the rear end cover body 1. The rear end cover body 1 has several mounting holes 35 arranged around its own edge to facilitate fixing the rear end cover body 1 to the rear side of the motor housing 30 using screws (not shown). For ease of description, the side of the rear end cover body 1 closest to the housing 30 is defined as the inner side of the rear end cover body 1, and the side furthest from the housing 30 is defined as the outer side of the rear end cover body 1. The outer end face of the rear end cover body 1 has a recessed cavity 4 at its center for mounting a bearing 3. The cavity 4 is cylindrical, and the outer ring 27 of the bearing 3 is interference-fitted into the cavity 4, ensuring the stability of the bearing 3 installation. A through hole 6 is provided at the bottom center of the cavity 4 for the rear rotating shaft 2 to pass through. The diameter of the through hole 6 is between the outer ring 27 and the inner ring 7 of the bearing 3, allowing the inner ring 7 to be suspended, thus enabling the rear rotating shaft 2, which is fixedly inserted into the inner ring 7, to rotate normally and ensure smooth rotation. A circular opening 8 is formed on the outer side of the accommodating cavity 4 to expose the end face of the bearing 3, so as to facilitate the staff to add lubricating oil to the bearing 3.

[0037] To protect the bearing 3, an opening / closing mechanism for closing or opening the opening 8 is provided on the outer side of the rear cover body 1. Specifically, the opening / closing mechanism includes an upper cover 9 and a lower cover 10 that are longitudinally separated along the outer end face of the rear cover body 1 in a first state to expose the opening 8, or longitudinally closed along the outer end face of the rear cover body 1 in a second state to close the opening 8. The upper cover 9 and the lower cover 10 are symmetrical semi-circular plates, and when they are longitudinally closed, they can form a complete circular partition in front of the opening 8. A locking mechanism for maintaining the upper cover 9 and the lower cover 10 in the second state is provided between them. In this embodiment, the locking mechanism includes an upper locking member 13 and a lower locking member 14, which are respectively fixed to the side of the upper cover 9 and the lower cover 10 away from the rear cover body 1. The upper locking member 13 is located near the lower edge of the upper cover 9, and the lower locking member 14 is located near the upper edge of the lower cover 10. The upper locking member 13 and the lower locking member 14 are arranged longitudinally opposite each other and fixed by screws 15. Specifically, the upper locking member 13 has a through hole 16 for the screw 15 to pass through, and the lower locking member 14 has a threaded hole 17 that is longitudinally corresponding to the through hole 16 for the screw 15 to be threaded.

[0038] To enhance the protective capabilities of the upper cover 9 and the lower cover 10, an upper surrounding plate 11 is provided on the side edge of the upper cover 9 away from the lower cover 10, sliding against the outer end face of the rear cover body 1. Similarly, a lower surrounding plate 12 is provided on the side edge of the lower cover 10 away from the upper cover 9, sliding against the outer end face of the rear cover body 1. The upper surrounding plate 11 is positioned along the upper arc-shaped edge of the upper cover 9, with both ends extending to the sides of the upper cover 9. The lower surrounding plate 12 is positioned along the lower arc-shaped edge of the lower cover 10, with both ends extending to the sides of the lower cover 10. This allows the upper surrounding plate 11 and the lower surrounding plate 12 to form a complete annular side barrier when the upper cover 9 and the lower cover 10 are closed, thus providing more comprehensive protection for the opening and closing mechanism in the second state. Meanwhile, when the upper cover 9 and the lower cover 10 are separated, the lower enclosure 12 located on the lower cover 10 can act as a barrier to prevent excess lubricating oil from flowing down the outer end face of the rear cover body 1 when lubricating oil is added to the bearing 3, thus making the outer surface of the rear cover body 1 cleaner.

[0039] In order to achieve stable sliding of the upper cover 9 and the lower cover 10, upper sliding sleeves 18 are provided on both sides of the upper cover 9, and lower sliding sleeves 19 are provided on both sides of the lower cover 10. Cylindrical guide rods 20 are provided longitudinally on both sides of the opening 8 for sliding cooperation between the two upper sliding sleeves 18 and the two lower sliding sleeves 19 respectively.

[0040] In order to fix the guide rod 20 and prevent the upper sliding sleeve 18 and the lower sliding sleeve 19 from detaching from the guide rod 20, both ends of the guide rod 20 are integrally provided with connecting seats 24 fixed to the rear end cover body 1.

[0041] To achieve precise closure of the upper cover 9 and the lower cover 10, a limiting member 21 is provided on the outer end face of the rear cover body 1 and on one side of the opening 8 to longitudinally block the upper sliding sleeve 18 and the lower sliding sleeve 19. The limiting member 21 protrudes from the outer end face of the rear cover body 1, thereby ensuring the blocking effect. The lower surface of the upper sliding sleeve 18 and the upper surface of the lower sliding sleeve 19 are respectively provided with upper clearance grooves 22 and lower clearance grooves 23 for the limiting member 21 to engage. This not only completes the longitudinal positioning of the upper sliding sleeve 18 and the lower sliding sleeve 19, but also ensures the complete closure of the upper cover 9 and the lower cover 10. The upper and lower edges of the limiting member 21 are provided with guide arc surfaces 28 so that the upper clearance grooves 22 and lower clearance grooves 23 can more efficiently and accurately engage with the limiting member 21.

[0042] To improve the ease of opening and closing of the upper cover 9 and the lower cover 10, an upper grip 25 is provided at the upper end of the upper cover 9, and a lower grip 26 is provided at the lower end of the lower cover 10. Both the upper grip 25 and the lower grip 26 are collar-shaped, and their outer side walls are respectively fixed to the upper surface of the upper cover 9 and the lower surface of the lower cover 10. A screw 15 for locking the upper grip 25 and restricting the upper cover 9 to a first state is threaded onto the outer end face of the rear cover body 1, that is, a screw hole 29 for threading the screw 15 is provided on the outer end face of the rear cover body 1.

[0043] The specific usage process is as follows:

[0044] After the motor is assembled, the rear end cover body 1 is installed on the rear side of the housing 30. When it is necessary to add lubricating oil to the bearing 3 on the rear end cover of the motor, first place the motor horizontally, then remove the screws 15 from the upper locking member 13 and the lower locking member 14, and then use the upper gripping member 25 and the lower gripping member 26 to pull open the upper cover 9 and the lower cover 10 respectively, so that the opening 8 on the rear end cover body 1 is exposed. At the same time, pass the removed screws 15 through the inner hole of the upper gripping member 25 and screw them into the screw hole 29 on the rear end cover body 1 to suspend the upper cover 9 in the first state. At this time, lubricating oil can be added to the bearing 3 in the accommodating cavity 4. Excess lubricating oil flows out from the opening 8 and can be blocked by the lower enclosure plate 12, thereby ensuring the cleanliness of the surface of the rear end cover body 1.

[0045] After oiling, first unscrew screw 15 from screw hole 29 on rear cover body 1 to release the locking of upper grip 25 and upper cover 9. Then, reclose upper cover 9 and lower cover 10 longitudinally and position them using limit member 21. When upper cover 9 and lower cover 10 are closed in front of opening 8, opening 8 can be closed. At this time, upper locking member 13 and lower locking member 14 are in contact with each other. Finally, re-insert screw 15 through through hole 16 and screw it into threaded hole 17 to complete the fixing of upper locking member 13 and lower locking member 14, thereby locking upper cover 9 and lower cover 10.

Claims

1. An electric machine rear end cover comprising a rear end cover body (1) and a rear shaft (2) which is rotatably limited to the rear end cover body (1), characterized in that: The outer end face of the rear cover body (1) is recessed inward to form a receiving cavity (4) for the installation of the bearing (3). The bottom of the receiving cavity (4) is provided with a through hole (6) for the rear rotating shaft (2) to pass through. After the rear rotating shaft (2) passes through the through hole (6), it is fixedly installed in the inner ring (7) of the bearing (3). The outer side of the receiving cavity (4) is formed with an opening (8) for the end face of the bearing (3) to be exposed. The outer side of the rear cover body (1) is provided with an opening and closing mechanism for closing or opening the opening (8).

2. The motor endshield of claim 1, wherein: The opening and closing mechanism includes an upper cover (9) and a lower cover (10) that are longitudinally separated along the outer end face of the rear cover body (1) in a first state to expose the opening (8) or longitudinally closed along the outer end face of the rear cover body (1) in a second state to close the opening (8). A locking mechanism is provided between the upper cover (9) and the lower cover (10) to keep them in the second state.

3. A motor end bell according to claim 2, characterized in that: The upper cover (9) has an upper circumference plate (11) that slides against the outer end face of the rear cover body (1) on the side edge away from the lower cover (10), and the lower cover (10) has a lower circumference plate (12) that slides against the outer end face of the rear cover body (1) on the side edge away from the upper cover (9).

4. The motor end bell of claim 2, wherein: The locking mechanism includes an upper locking member (13) and a lower locking member (14) respectively disposed on the side of the upper cover (9) and the lower cover (10) away from the rear cover body (1), and the upper locking member (13) and the lower locking member (14) are fixed by screws (15).

5. A motor end bell according to claim 4, characterized in that: The upper locking member (13) has a through hole (16) for the screw (15) to pass through, and the lower locking member (14) has a threaded hole (17) for the screw (15) to be threaded.

6. A motor rear end cover according to claim 2, characterized in that: Both sides of the upper cover (9) are provided with upper sliding sleeves (18), both sides of the lower cover (10) are provided with lower sliding sleeves (19), and both sides of the opening (8) are provided with guide rods (20) for sliding cooperation between the two upper sliding sleeves (18) and the two lower sliding sleeves (19).

7. A motor end bell according to claim 6, characterized in that: The outer end face of the rear cover body (1) and one side of the opening (8) are provided with a limiting member (21) for longitudinally blocking the upper sliding sleeve (18) and the lower sliding sleeve (19).

8. A motor end bell according to claim 7, characterized in that: The lower surface of the upper sliding sleeve (18) and the upper surface of the lower sliding sleeve (19) are respectively provided with an upper clearance groove (22) and a lower clearance groove (23) for the limiting member (21) to engage.

9. The motor endbell of claim 6, wherein: Both ends of the guide rod (20) are provided with connecting seats (24) fixed to the rear cover body (1).

10. The motor endbell of claim 2, wherein: The upper end of the upper cover (9) is provided with an upper grip (25), the lower end of the lower cover (10) is provided with a lower grip (26), and the outer end face of the rear cover body (1) is detachably connected with a screw (15) for locking the upper grip (25) to restrict the upper cover (9) to a first state.

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