Automobile electric fuel tank cap reduction gearbox with lubricating mechanism
By introducing oil storage tank and rotary contact mechanism into the electric fuel tank cap reducer of the car, the problem of automatic lubrication of the gears in the reducer is solved, the gear transmission life is improved and the lubricating oil is avoided, and the operating reliability of the reducer is improved.
Patent Information
- Application Number
- CN202422385737.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-09-29
AI Technical Summary
In the prior art, it is difficult for the electric gas tank cap reducer to automatically lubricate the internal gears of the reducer, resulting in greater friction and affecting normal operation.
A self-lubricating mechanism including an oil storage tank and a rotary contact mechanism is designed, through which the lubricating oil is automatically drained to the first planetary reduction teeth and the second planetary reduction teeth in the gearbox, and the automatic discharge of lubricating oil is achieved by combining the partition plate and the oil outlet groove.
It realizes automatic lubrication of the internal gears of the reducer, improves the gear transmission life, avoids the waste of lubricating oil, and improves the operating reliability of the reducer.
Smart Images
Figure CN223215726U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reduction gear boxes, in particular to an automobile electric fuel tank cover reduction gear box with a lubrication mechanism. Background Art
[0002] In the automotive industry, the fuel tank cap is a crucial component of the vehicle. It not only seals the tank to prevent fuel leaks but also integrates multiple functions to enhance user experience and vehicle safety. With the accelerating trend toward electrification of vehicles, electric fuel tank caps are becoming a mainstream feature of the market. These caps, powered by electric motors, open and close, improving operational convenience and sealing performance.
[0003] Traditional lubrication methods often rely on manual regular addition of lubricating oil, which not only increases maintenance costs, but may also lead to untimely or excessive lubrication, affecting the normal operation of the gearbox and further exacerbating the difficulty of lubrication.
[0004] In the prior art, for example, a Chinese utility model patent (publication number CN218817897U) discloses a reduction gearbox for an electric fuel tank cap of an automobile, which reduces the rotation speed of the motor and increases the torque by providing a plurality of reduction gears, thereby achieving the effect of driving the fuel tank cap to open smoothly with large torque.
[0005] However, in actual use, the reduction gear box structure disclosed in the above-mentioned prior art is not convenient for automatic lubrication of the gears inside the reduction gear box, which may easily lead to difficulty in opening the car fuel tank cap through the motor due to increased friction of the gear parts after the reduction gear box has been used for a long time. Utility Model Content
[0006] In view of the above problems, an automobile electric fuel tank cover reduction gearbox with a lubrication mechanism is provided, which solves the problem of inconvenient automatic lubrication of the gears in the reduction gearbox through an oil storage tank and a rotating contact mechanism.
[0007] In order to solve the problems of the existing technology, the utility model provides an automobile electric fuel tank cap reduction gearbox with a lubrication mechanism, comprising a motor, an output rod arranged on the motor, a reduction gear arranged on the motor for reducing the rotation speed of the motor output shaft, a first planetary reduction gear arranged in the reduction gearbox for connecting to the output rod, a second planetary reduction gear and a protruding rotating rod extending outside the reduction gearbox, and a self-lubricating mechanism arranged in the reduction gearbox for automatically lubricating the gears in the reduction gearbox, the self-lubricating mechanism comprising an oil storage tank and a rotating contact mechanism for controlling the drainage of lubricating oil inside the oil storage tank to the first planetary reduction gear and the second planetary reduction gear.
[0008] Preferably, the self-lubricating mechanism also includes a first oil storage tank, a first oil drain hole, a second oil storage tank and a second oil drain hole; the first oil storage tank is opened on the oil storage tank; the first oil drain hole is opened on the first oil storage tank and is used to limit the passage of lubricating oil; the second oil storage tank is opened on the oil storage tank and is located below the first oil storage tank; the second oil drain hole is opened on the second oil storage tank, and the position of the second oil drain hole corresponds to the position of the first oil drain hole.
[0009] Preferably, the self-lubricating mechanism further comprises a partition plate and an oil outlet groove; the partition plate is arranged in the reduction box and is located between the oil storage tank and the second planetary reduction gear, and the partition plate is coaxially fixed with the extended rotating rod; the oil outlet grooves are opened on the partition plate and there are several of them.
[0010] Preferably, the rotating contact mechanism includes a first rotating contact gear, a first transmission rod and a second rotating contact gear; the first rotating contact gear is arranged on the extended rotating rod and is fixed coaxially with the extended rotating rod; the first transmission rod is rotatably arranged on the oil tank and close to one side of the first rotating contact gear; the second rotating contact gear is arranged on the first transmission rod and is fixed coaxially with the first transmission rod, and the second rotating contact gear is engaged with the first rotating contact gear.
[0011] Preferably, the rotary contact mechanism further includes a second transmission rod and a third reduction contact gear; the second transmission rod is rotatably arranged on the oil storage tank and close to one side of the first transmission rod; the third reduction contact gear is arranged on the second transmission rod and meshes with the second rotary contact gear.
[0012] Preferably, the rotary contact mechanism further includes a drainage port; the drainage port is provided on the third reduction contact gear and has a plurality of drainage ports, the positions of the drainage ports and the second oil drain holes are staggered and correspond to each other, and the drainage ports are used to guide the lubricating oil to the oil outlet groove.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] 1. The utility model provides an oil storage tank and a rotary contact mechanism, which can automatically lubricate the first planetary reduction gear and the second planetary reduction gear in the reduction box, thereby improving the service life of the gear transmission.
[0015] 2. The utility model can automatically lubricate the gears in the reduction box by arranging the first oil storage tank, the first oil drain hole, the second oil storage tank and the second oil drain hole.
[0016] 3. The utility model achieves automatic discharge and lubrication of lubricating oil by arranging a partition plate and an oil outlet groove.
[0017] 4. The utility model achieves reverse direction transmission of the second rotating contact gear by setting a rotating contact mechanism.
[0018] 5. The utility model provides a second transmission rod and a third deceleration contact gear, thereby achieving a deceleration effect on the third deceleration contact gear.
[0019] 6. The utility model provides a drainage port. Only when the drainage port corresponds to the position of the second oil row hole and the oil outlet groove on the partition plate, can the lubricating oil flow to the first planetary reduction gear and the second planetary reduction gear. This avoids the frequent opening of the oil cap of the car, which causes the extended rotating rod to rotate frequently and causes excessive outflow of lubricating oil and causes waste. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 The present invention is a three-dimensional structural diagram of a reduction box of an automobile electric fuel tank cap with a lubrication mechanism.
[0021] Figure 2 It is a car electric fuel tank cover reducer with a lubrication mechanism Figure 1 Side view cutaway three-dimensional structure diagram.
[0022] Figure 3 It is a car electric fuel tank cover reducer with a lubrication mechanism Figure 1 Front view cutaway three-dimensional structure diagram.
[0023] Figure 4 It is a car electric fuel tank cover reducer with a lubrication mechanism Figure 2 Enlarged structural diagram at point A in the middle.
[0024] Figure 5 The present invention is a three-dimensional structural diagram of the first planetary reduction gear and the second planetary reduction gear of an automobile electric fuel tank cap reduction box with a lubrication mechanism.
[0025] Figure 6 The present invention is a three-dimensional structural diagram of the drainage port and the third reduction contact tooth of an automobile electric fuel tank cover reduction box with a lubrication mechanism.
[0026] The numbers in the figure are: 1. Motor; 2. Output rod; 3. Reducer body; 31. First planetary reduction gear; 32. Second planetary reduction gear; 33. Extended rotating rod; 4. Self-lubricating mechanism; 41. Oil storage tank; 42. First oil storage tank; 43. First oil drain hole; 44. Second oil storage tank; 45. Second oil drain hole; 46. Partition plate; 47. Oil outlet groove; 5. Rotating contact mechanism; 51. First rotating contact gear; 52. First transmission rod; 53. Second rotating contact gear; 54. Second transmission rod; 55. Third reduction contact gear; 56. Drainage port. DETAILED DESCRIPTION
[0027] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is described in further detail below in conjunction with the accompanying drawings and specific implementation methods.
[0028] See also Figure 1-Figure 3 As shown, an automobile electric fuel tank cap reducer with a lubrication mechanism includes a motor 1, an output rod 2 arranged on the motor 1, a reducer body 3 arranged on the motor 1 for reducing the rotation speed of the output shaft of the motor 1, a first planetary reduction gear 31, a second planetary reduction gear 32 and a protruding rotating rod 33 extending outside the reducer body 3 for connecting with the output rod 2, and a self-lubricating mechanism 4 arranged in the reducer body 3 for automatically lubricating the gears inside the reducer body 3. The self-lubricating mechanism 4 includes an oil storage tank 41 and a rotating contact mechanism 5 for controlling the lubricating oil in the oil storage tank 41 to be drained to the first planetary reduction gear 31 and the second planetary reduction gear 32. A docking plate connected to the motor 1 is provided on the reducer body 3, and a docking groove for inserting the docking plate is provided on the motor 1. The docking groove and the docking plate are both provided with threaded grooves, and locking rods are threadedly connected in the threaded grooves. The oil storage tank 41 is detachably arranged on the reducer body 3 by bolts.
[0029] When it is necessary to self-lubricate the first planetary reduction gear 31 and the second planetary reduction gear 32 in the reduction box body 3, when the motor 1 is started and drives the output rod 2 to rotate, the extended rotating rod 33 can be driven to rotate during this process. At this time, the lubricating oil inside the oil storage tank 41 is driven by the rotating contact mechanism 5 to flow to the first planetary reduction gear 31 and the second planetary reduction gear 32, thereby achieving automatic lubrication of the first planetary reduction gear 31 and the second planetary reduction gear 32 in the reduction box body 3.
[0030] See also Figure 2-Figure 4 As shown, the self-lubricating mechanism 4 also includes a first oil storage tank 42, a first oil drain hole 43, a second oil storage tank 44 and a second oil drain hole 45; the first oil storage tank 42 is opened on the oil storage tank 41; the first oil drain hole 43 is opened on the first oil storage tank 42 and is used to limit the passage of lubricating oil; the second oil storage tank 44 is opened on the oil storage tank 41 and is located below the first oil storage tank 42; the second oil drain hole 45 is opened on the second oil storage tank 44, and the position of the second oil drain hole 45 corresponds to the position of the first oil drain hole, the first oil drain hole 43 and the second oil drain hole 45 are both circular, and the diameters of the first oil drain hole 43 and the second oil drain hole 45 are the same.
[0031] The lubricating oil inside the oil storage tank 41 can be stored through the first oil storage tank 42, and the stored lubricating oil can flow into the second oil storage tank 44 through the first oil drain hole 43. The oil storage space of the second oil storage tank 44 is smaller than the oil storage space of the first oil storage tank 42. After the lubricating oil flows into the second oil storage tank 44 and stays for a short time, it can flow out through the second oil drain hole 45. After flowing out, it can automatically lubricate the first planetary reduction gear 31 and the second planetary reduction gear 32 located below.
[0032] See also Figure 2-Figure 4 As shown, the self-lubricating mechanism 4 also includes a partition plate 46 and an oil outlet groove 47; the partition plate 46 is arranged in the reduction box body 3 and is located between the oil storage tank 41 and the second planetary reduction gear 32, and the partition plate 46 is coaxially fixed with the extended rotating rod 33; the oil outlet groove 47 is opened on the partition plate 46 and has several.
[0033] After the rotating rod 33 is extended and rotated and the lubricating oil flows out through the second oil drain hole 45 , it can be drained through the oil outlet groove 47 provided on the partition plate 46 , thereby achieving automatic draining and lubrication of the lubricating oil.
[0034] See also Figure 5 and Figure 6 As shown, the rotating contact mechanism 5 includes a first rotating contact gear 51, a first transmission rod 52 and a second rotating contact gear 53; the first rotating contact gear 51 is arranged on the extended rotating rod 33 and is fixed coaxially with the extended rotating rod 33; the first transmission rod 52 is rotatably arranged on the oil storage tank 41 and is close to one side of the first rotating contact gear 51; the second rotating contact gear 53 is arranged on the first transmission rod 52 and is fixed coaxially with the first transmission rod 52, and the second rotating contact gear 53 is engaged with the first rotating contact gear 51, and an avoidance groove is opened on the oil storage tank 41 for the first transmission rod 52 and the second rotating contact gear 53 to rotate, and the size of the avoidance groove is consistent with the second rotating contact gear 53.
[0035] When it is necessary to control the discharge of lubricating oil in the oil storage tank 41, first, when the extended rotating rod 33 rotates, the first rotating contact gear 51 fixed coaxially with it can be driven to rotate the second rotating contact gear 53 engaged therewith, and the second rotating contact gear 53 can be caused to rotate in the opposite direction to the extended rotating rod 33, thereby achieving the opposite direction transmission of the second rotating contact gear 53.
[0036] See also Figure 5 and Figure 6 As shown, the rotary contact mechanism 5 also includes a second transmission rod 54 and a third reduction contact gear 55; the second transmission rod 54 is rotatably set on the oil storage tank 41 and close to one side of the first transmission rod 52; the third reduction contact gear 55 is set on the second transmission rod 54 and meshes with the second rotary contact gear 53, and a clearance groove for the third reduction contact gear 55 to rotate through is opened in the second oil drain hole 45, so that the third reduction contact gear 55 can rotate in the second oil drain hole 45.
[0037] When the second contact rotating gear rotates, the meshed third reduction contact gear 55 can be rotated. At this time, the rotation speed of the third reduction contact gear 55 is slower than the rotation speed of the extended rotating rod 33, achieving a deceleration effect on the third reduction contact gear 55.
[0038] See also Figure 5 and Figure 6 As shown, the rotary contact mechanism 5 further includes a drainage port 56 ; the drainage port 56 is provided on the third reduction contact gear 55 and has a plurality of drainage ports 56 , and the positions of the drainage ports 56 and the second oil drain holes 45 are staggered and correspond to each other, and the drainage ports 56 are used to guide the lubricating oil to the oil outlet groove 47 .
[0039] When the third reduction contact gear 55 rotates, the drainage port 56 can be briefly connected to the position of the second oil drain hole 45. At this time, the extended rotating rod 33 continues to rotate. Since the partition plate 46 is coaxially fixed with the extended rotating rod 33, the lubricating oil can only flow to the first planetary reduction gear 31 and the second planetary reduction gear 32 when the drainage port 56 corresponds to the position of the second oil drain hole 45 and the oil outlet groove 47 provided on the partition plate 46. This avoids the frequent opening of the automobile oil cap, which causes the extended rotating rod 33 to rotate frequently, resulting in excessive outflow of lubricating oil and waste.
[0040] The above embodiments merely represent one or several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.
Claims
1. A reduction gearbox for an electric fuel tank cap of an automobile with a lubricating mechanism, comprising a motor (1), an output rod (2) arranged on the motor (1), a reduction gearbox (3) arranged on the motor (1) for reducing the rotation speed of an output shaft of the motor (1), a first planetary reduction gear (31) and a second planetary reduction gear (32) arranged in the reduction gearbox (3) for connecting with the output rod (2), and a protruding rotating rod (33) extending outside the reduction gearbox (3), and a self-lubricating mechanism (4) arranged in the reduction gearbox (3) for automatically lubricating the gears inside the reduction gearbox (3); characterized in that: The self-lubricating mechanism (4) comprises an oil storage tank (41) and a rotary contact mechanism (5) for controlling the lubricating oil in the oil storage tank (41) to flow to the first planetary reduction gear (31) and the second planetary reduction gear (32).
2. The automobile electric fuel tank cover reduction box with a lubrication mechanism according to claim 1, characterized in that: The self-lubricating mechanism (4) further comprises a first oil storage tank (42), a first oil drain hole (43), a second oil storage tank (44) and a second oil drain hole (45); the first oil storage tank (42) is provided on the oil storage tank (41); the first oil drain hole (43) is provided on the first oil storage tank (42) and is used to restrict the passage of lubricating oil; the second oil storage tank (44) is provided on the oil storage tank (41) and is located below the first oil storage tank (42); the second oil drain hole (45) is provided on the second oil storage tank (44), and the position of the second oil drain hole (45) corresponds to the position of the first oil drain hole.
3. The automobile electric fuel tank cover reduction box with a lubrication mechanism according to claim 1, characterized in that: The self-lubricating mechanism (4) further comprises a partition plate (46) and an oil outlet groove (47); the partition plate (46) is arranged in the reduction box (3) and is located between the oil storage tank (41) and the second planetary reduction gear (32); the partition plate (46) is coaxially fixed with the extended rotating rod (33); and a plurality of oil outlet grooves (47) are provided on the partition plate (46).
4. The automobile electric fuel tank cover reduction box with a lubrication mechanism according to claim 1, characterized in that: The rotary contact mechanism (5) comprises a first rotary contact gear (51), a first transmission rod (52) and a second rotary contact gear (53); the first rotary contact gear (51) is arranged on the extending rotary rod (33) and is fixed coaxially with the extending rotary rod (33); the first transmission rod (52) is rotatably arranged on the oil storage tank (41) and is close to one side of the first rotary contact gear (51); the second rotary contact gear (53) is arranged on the first transmission rod (52) and is fixed coaxially with the first transmission rod (52), and the second rotary contact gear (53) is meshed with the first rotary contact gear (51).
5. The automobile electric fuel tank cover reduction gearbox with a lubrication mechanism according to claim 4, characterized in that: The rotary contact mechanism (5) further comprises a second transmission rod (54) and a third reduction contact gear (55); the second transmission rod (54) is rotatably arranged on the oil storage tank (41) and close to one side of the first transmission rod (52); and the third reduction contact gear (55) is arranged on the second transmission rod (54) and meshes with the second rotary contact gear (53).
6. The automobile electric fuel tank cover reduction box with a lubrication mechanism according to claim 4, characterized in that: The rotary contact mechanism (5) further includes a drainage port (56); the drainage ports (56) are provided on the third reduction contact gear (55) and are provided in a plurality thereof. The drainage ports (56) correspond to the positions of the second oil drain holes (45) in a staggered manner. The drainage ports (56) are used to guide the lubricating oil to the oil outlet groove (47).