Motor with improved bearing end face groove
By designing the first groove and the second groove on the bearing end surface, the problem that lubricating oil cannot effectively discharge air in the prior art is solved, and stable delivery of shaft gap lubricating oil and stability of bearing rotation are achieved.
Patent Information
- Application Number
- CN202422109334.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-29
AI Technical Summary
In the prior art, the bearing end surface is designed to be free of grooves or small grooves, which causes the lubricating oil to effectively discharge air, resulting in poor lubrication and unstable bearing rotation.
The first groove and the second groove are opened on the bearing end surface. The cross-sectional area of the first groove is small and the capillary force is large, and it is used for oil supply; the cross-sectional area of the second groove is large and the capillary force is small, and it is used for exhausting residual air.
Through the coordination of the first groove and the second groove, the effective transportation of the shaft gap lubricant oil is ensured, air convergence is avoided and the lubricant oil transport is blocked, and the stability of bearing rotation is improved.
Smart Images
Figure CN223039768U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a motor with an improved bearing end face groove, belonging to the technical field of improvement of the oil supply structure of the motor bearing. Background Art
[0002] A motor is an electromagnetic device that realizes the conversion or transmission of electrical energy according to the law of electromagnetic induction. Its main function is to generate driving torque and serve as a power source for electrical appliances or various machines. In the prior art, the conventional bearing end face is designed with a structure without grooves or small grooves. When there are no grooves, it is impossible to effectively discharge air when adding lubricating oil, and the remaining air will accelerate the oxidation of the lubricating oil, increase compressibility, and cause poor lubrication, etc. Although the small groove structure can transport lubricating oil through capillary action, the grooves are also good air storage spaces, and the air that cannot be discharged may gather in the end face grooves to block the transport of lubricating oil, and there is a risk of being unable to supply oil to the shaft clearance, affecting the stability of the bearing rotation. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a motor with an improved bearing end face groove, which can ensure the lubricating oil transportation in the shaft clearance and avoid affecting the stability of the bearing rotation.
[0004] To solve the above technical problem, the technical solution adopted by the utility model is as follows:
[0005] A motor with an improved bearing end face groove includes a motor housing. A magnet is arranged inside the motor housing, an insulating frame is arranged inside the magnet, silicon steel sheets are arranged inside the insulating frame, a copper tube is arranged inside the silicon steel sheets, a bearing is arranged inside the copper tube, a shaft center is arranged inside the bearing, a friction plate is arranged between the bottom surface of the copper tube and the shaft center, a snap ring is arranged on the internal stepped surface of the copper tube, a gasket is arranged on the snap ring, and first grooves and second grooves are formed on the bearing end face. The inner ends of the first grooves and the second grooves are communicated with the gap between the bearing and the shaft center, and the cross-sectional area of the second groove is larger than that of the first groove.
[0006] The cross-section of the first groove is triangular, and the cross-section of the second groove is trapezoidal.
[0007] The number of both the first grooves and the second grooves is two, and the first grooves and the second grooves are arranged at intervals along the circumferential direction of the bearing.
[0008] Adjacent first grooves and second grooves are vertically arranged.
[0009] The two first grooves are on the same straight line, and the two second grooves are on the same straight line.
[0010] The outer ends of the first grooves and the second grooves extend to the outer edge position of the bearing.
[0011] The lengths of the two inclined surfaces of the first groove are 0.2 - 0.4 mm respectively, and the opening width is 0.3 - 0.4 nm.
[0012] The bottom width of the second groove is 0.2 - 0.4 mm, the lengths of the two inclined surfaces are 0.2 - 0.3 mm respectively, and the opening width is 0.5 - 0.7 nm.
[0013] The beneficial effects of the present utility model: The present utility model provides a motor with improved bearing end face grooves. A first groove and a second groove are provided on the bearing end face. The cross-sectional area of the second groove is larger than that of the first groove. The channel of the first groove is thinner and the capillary force is large, and oil is supplied to the shaft clearance through capillary action. The channel of the second groove is thicker and the capillary force is small, and the residual air can be effectively discharged, avoiding the formation of an air storage space to block the lubricating oil transportation. Therefore, the cooperation of the first groove and the second groove can ensure the lubricating oil transportation in the shaft clearance and avoid affecting the rotational stability of the bearing. Description of the Drawings
[0014] Figure 1 is a schematic structural diagram of a motor with improved bearing end face grooves of the present utility model;
[0015] Figure 2 is a schematic structural diagram of the bearing in the present utility model;
[0016] Figure 3 is Figure 2 a schematic top view structural diagram of
[0017] Figure 4 is a specific dimension diagram of the first groove in Embodiment 2 of the present utility model;
[0018] Figure 5 is a specific dimension diagram of the second groove in Embodiment 2 of the present utility model;
[0019] The reference numerals in the drawings are as follows: 1 - copper tube; 2 - bearing; 3 - axis center; 4 - gasket; 5 - snap ring; 6 - friction plate; 7 - silicon steel sheet; 8 - insulating frame; 9 - magnet; 10 - motor housing; 21 - first groove; 22 - second groove. Detailed Embodiment
[0020] The present utility model will be further described below in conjunction with the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.
[0021] Such as Figure 1As shown in the figure, the utility model discloses a motor with improved bearing end face grooves, which includes a motor housing 10. A magnet 9 is arranged inside the motor housing 10, an insulating frame 8 is arranged inside the magnet 9, a silicon steel sheet 7 is arranged inside the insulating frame 8, a copper tube 1 is arranged inside the silicon steel sheet 7, a bearing 2 is arranged inside the copper tube 1, a shaft center 3 is arranged inside the bearing 2, a friction plate 6 is arranged between the bottom surface of the copper tube 1 and the shaft center 3, a snap ring 5 is arranged on the internal step surface of the copper tube 1, and a gasket 4 is arranged on the snap ring 5. This part is the existing motor structure.
[0022] As Figure 2 and Figure 3 shown in the figure, the improvement of the utility model lies in that a first groove 21 and a second groove 22 are formed on the end face of the bearing 2 ( Figure 1 at position A in the figure). The inner ends of the first groove 21 and the second groove 22 are in communication with the gap between the bearing 2 and the shaft center 3, and the cross-sectional area of the second groove 22 is larger than that of the first groove 21. Among them, the first groove has a thinner channel (smaller cross-sectional area) and a greater capillary force, and supplies oil to the shaft gap through capillary action. The second groove has a thicker channel (larger cross-sectional area) and a smaller capillary force, and the residual air can be effectively discharged to avoid forming an air storage space to block the lubricating oil transportation. The utility model adopts the cooperation of the first groove and the second groove to ensure the lubricating oil transportation in the shaft gap and avoid affecting the rotational stability of the bearing.
[0023] Embodiment 2
[0024] As Figure 1 shown in the figure, the utility model discloses a motor with improved bearing end face grooves, which includes a motor housing 10. A magnet 9 is arranged inside the motor housing 10, an insulating frame 8 is arranged inside the magnet 9, a silicon steel sheet 7 is arranged inside the insulating frame 8, a copper tube 1 is arranged inside the silicon steel sheet 7, a bearing 2 is arranged inside the copper tube 1, a shaft center 3 is arranged inside the bearing 2, a friction plate 6 is arranged between the bottom surface of the copper tube 1 and the shaft center 3, a snap ring 5 is arranged on the internal step surface of the copper tube 1, and a gasket 4 is arranged on the snap ring 5. This part is the existing motor structure.
[0025] As Figure 2 and Figure 3 shown in the figure, the improvement of the utility model lies in that a first groove 21 and a second groove 22 are formed on the end face of the bearing 2 ( Figure 1 at position A in the figure). The inner ends of the first groove 21 and the second groove 22 are in communication with the gap between the bearing 2 and the shaft center 3, and the outer ends of the first groove 21 and the second groove 22 extend to the outer edge position of the bearing 2. The cross-sectional area of the second groove 22 is larger than that of the first groove 21. Specifically, the number of both the first groove 21 and the second groove 22 is two, and the first groove 21 and the second groove 22 are arranged at intervals along the circumferential direction of the bearing 2. The adjacent first groove 21 and the second groove 22 are vertically arranged. The two first grooves 21 are on the same straight line, and the two second grooves 22 are on the same straight line.
[0026] As Figure 4 shown, the cross-section of the first groove 21 is triangular, the lengths of the two inclined surfaces of the first groove 21 are 0.3 mm respectively, and the opening width is 0.36 nm. As Figure 5 shown, the cross-section of the second groove 22 is trapezoidal, the bottom width of the second groove 22 is 0.3 mm, the lengths of the two inclined surfaces are 0.28 mm respectively, and the opening width is 0.6 nm.
[0027] In the present utility model, the channel of the first groove is relatively narrow (small cross-sectional area), and the capillary force is large. The oil is supplied to the shaft clearance through capillary action. The channel of the second groove is relatively thick (large cross-sectional area), and the capillary force is small. The residual air can be effectively discharged to avoid forming a gas storage space to block the lubricating oil transportation. The present utility model adopts the cooperation of the first groove and the second groove to ensure the lubricating oil transportation in the shaft clearance and avoid affecting the rotational stability of the bearing.
[0028] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present utility model.
Claims
1. A motor with improved bearing end surface groove, characterized in that: The invention comprises a motor housing (10), wherein a magnet (9) is arranged in the motor housing (10), an insulating frame (8) is arranged in the magnet (9), a silicon steel sheet (7) is arranged in the insulating frame (8), a copper tube (1) is arranged in the silicon steel sheet (7), a bearing (2) is arranged in the copper tube (1), an axis (3) is arranged in the bearing (2), a friction plate (6) is arranged between the bottom surface of the copper tube (1) and the axis (3), a buckle ring (5) is arranged on the inner step surface of the copper tube (1), a gasket (4) is arranged on the buckle ring (5), a first groove (21) and a second groove (22) are formed on the end surface of the bearing (2), the inner ends of the first groove (21) and the second groove (22) are connected to the gap between the bearing (2) and the axis (3), and the cross-sectional area of the second groove (22) is larger than the cross-sectional area of the first groove (21).
2. The motor with improved bearing end groove according to claim 1, characterized in that: The cross section of the first groove (21) is triangular, and the cross section of the second groove (22) is trapezoidal.
3. The motor with improved bearing end groove according to claim 1, characterized in that: The number of the first grooves (21) and the number of the second grooves (22) are both two, and the first grooves (21) and the second grooves (22) are arranged at intervals along the circumference of the bearing (2).
4. The motor with improved bearing end groove according to claim 3, characterized in that: The first grooves (21) and the second grooves (22) adjacent to each other are arranged vertically.
5. The motor with improved bearing end groove according to claim 3, characterized in that: The two first grooves (21) are on the same straight line, and the two second grooves (22) are on the same straight line.
6. The motor with improved bearing end groove according to claim 1, characterized in that: The outer ends of the first groove (21) and the second groove (22) extend to the outer edge of the bearing (2).
7. The motor with improved bearing end groove according to claim 2, characterized in that: The lengths of the two inclined surfaces of the first groove (21) are respectively 0.2-0.4 mm, and the opening width is 0.3-0.4 nm.
8. The motor with improved bearing end groove according to claim 2, characterized in that: The bottom width of the second groove (22) is 0.2-0.4 mm, the lengths of the two inclined surfaces are 0.2-0.3 mm respectively, and the opening width is 0.5-0.7 nm.