Novel speed reducing mechanism for automobile starter

Abstract

The invention relates to the technical field of starters, in particular to a novel speed reducing mechanism for an automobile starter, which comprises a gear ring arranged in a starter shell, a planet carrier and a planet pinion are sequentially arranged in the gear ring, and a sun gear meshed with the planet pinion is arranged on a starting motor driving shaft. The gear ring is of a hollow shell structure with through holes formed in the two sides, and a starting motor driving shaft penetrates through the holes of the gear ring through a sealing bearing so that lubricating oil can be arranged in the gear ring. By combining a periodic lubrication maintenance strategy, efficient lubrication of the starter is realized, the working efficiency is improved, the service life is prolonged, the maintenance cost is reduced, the structural design and the overall performance are optimized, and high-reliability operation of the starter under various working conditions is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of starters, in particular to a novel speed reduction mechanism for automobile starters. Background Art

[0002] In the design of automobile starters, the reduction mechanism is an important component to ensure that the engine can start smoothly. The traditional starter reduction mechanism usually includes basic components such as a ring gear, a planetary carrier, planetary pinions and a sun gear. These components achieve power reduction and transmission through mutual engagement and transmission. However, during long-term use, due to friction and wear, components such as gears and bearings inside the reduction mechanism are prone to poor lubrication, which not only reduces the working efficiency of the starter, but may also cause serious mechanical failures.

[0003] In order to solve the above problems, the existing automobile starter reduction mechanism has begun to use lubricating oil for lubrication to reduce friction and wear and improve the reliability and durability of the starter. However, the traditional lubrication method often has problems such as poor circulation of lubricating oil and untimely oil replenishment, resulting in poor lubrication effect. Especially when the starter is started frequently, the lubricating oil inside the reduction mechanism is easily exhausted, resulting in a high failure rate of the current starter reduction mechanism, which affects the normal starting of the automobile engine. For this reason, we propose a new reduction mechanism for automobile starters. Summary of the invention

[0004] A technical problem to be solved by the present application is to design a novel reduction mechanism for a starter motor of an automobile, which can not only set lubricating oil inside the reduction mechanism to improve the lubrication effect, but also realize the circulation replenishment of the lubricating oil to ensure that the reduction mechanism can be fully lubricated every time the starter motor is started.

[0005] In order to solve the above technical problems, the embodiment of the present application provides a new type of reduction mechanism for an automobile starter, including a gear ring arranged in a starter housing, a planet carrier and a planetary pinion are arranged in the gear ring in sequence, and a sun gear engaging with the planetary pinion is arranged on the starter motor drive shaft, the gear ring is a hollow housing structure with through holes on both sides, and the starter motor drive shaft penetrates the opening of the gear ring by a sealed bearing so that lubricating oil is arranged in the gear ring;

[0006] It also includes an oil storage unit, a circulation mechanism is provided between the oil storage unit and the gear ring, and a linkage is provided between the circulation mechanism and the starter output shaft, so that the starter can circulate and replenish the lubricating oil in the gear ring every time it is started;

[0007] The circulation mechanism is also connected to a periodic oil supply unit for periodically lubricating and replenishing oil at each active position of the starter, and oil is replenished to each active position of the starter regularly with the number of times the starter is started as a cycle.

[0008] In some embodiments, the oil storage unit includes an oil storage barrel fixed on the ring gear, and the circulation mechanism is arranged between the oil storage barrel and the ring gear to transfer the lubricating oil in the ring gear and the oil storage barrel.

[0009] In some embodiments, the oil storage barrel is a cover structure with an opening on one side and is seamlessly fixed to one side of the ring gear, and the starter motor drive shaft passes through the oil storage barrel using a sealed bearing.

[0010] In some embodiments, the circulation mechanism simultaneously fixes an oil inlet pipe and an oil outlet pipe that penetrate the oil storage barrel and the adjacent side walls of the gear ring, and one end of the oil inlet pipe and the oil outlet pipe located in the gear ring is respectively provided with a first one-way outlet valve and a first one-way inlet valve;

[0011] A second one-way inlet valve and a second one-way outlet valve are respectively fixed through the oil inlet pipe and the oil outlet pipe in the oil storage barrel;

[0012] A first piston rod is provided in the oil inlet pipe and the oil outlet pipe. The first piston rod is located on the side of the second one-way inlet valve and the second one-way outlet valve away from the gear ring, and both extend to the outside of the oil storage barrel. The linkage is connected to the first piston rod to drive the first piston rod to move when the starter is started.

[0013] In some embodiments, a seal is provided at one end of the oil inlet pipe and the oil outlet pipe close to the oil storage barrel, and the first piston rod slides through the seal.

[0014] In some embodiments, the linkage member includes a traction plate fixed on the starter output shaft, and the first piston rod is connected to the traction plate.

[0015] In some embodiments, the periodic oil supply unit includes an oil supply barrel disposed in an oil storage barrel, an oil supply pipe is connected and fixed between the oil supply barrel and the oil outlet pipe, a third one-way inlet valve is disposed in the middle section of the oil supply pipe, and a third one-way outlet valve is also connected and fixed on the oil supply barrel, and the third one-way outlet valve uses the oil guide pipe to respectively deliver the lubricating oil to various active parts of the starter;

[0016] A periodic suction unit is arranged between the oil supply pipe and the traction plate to replenish oil to each active position of the starter after the starter is started a fixed number of times.

[0017] In some embodiments, the oil supply pipe is fixedly passed through the oil storage barrel, and the periodic suction unit includes a second piston rod disposed in the oil supply pipe, and the second piston rod extends to the outside of the oil storage barrel;

[0018] A periodic pressing mechanism connecting the second piston rod and the traction plate is arranged on the outside of the oil storage barrel.

[0019] In some embodiments, the periodic pressing mechanism includes a mounting seat fixed on the oil storage barrel, a driving rod is rotatably mounted on the mounting seat, a cam whose end contacts the second piston rod is mounted on one end of the driving rod, and a ratchet mechanism is arranged at the other end of the driving rod;

[0020] A connecting rod is installed on the outer ring of the ratchet mechanism, and a first traction rod and a second traction rod are installed in sequence between the other end of the connecting rod and the traction plate by using a rotating shaft;

[0021] A damping ring in contact with the driving rod is also arranged on the driving rod to limit the rotation of the driving rod when the ratchet mechanism is idling, and an elastic member is arranged on the second piston rod to automatically drive the second piston rod to reset after the second piston rod is pressed.

[0022] In some embodiments, the elastic member includes a spring sleeved on the second piston rod, and its two ends are respectively connected to the oil storage barrel and the end of the second piston rod.

[0023] The present invention has at least the following beneficial effects:

[0024] Compared with the traditional reduction mechanism design, it shows significant beneficial effects, as follows:

[0025] 1. Enhanced lubrication effect and efficiency: By setting lubricating oil inside the reduction mechanism and equipping it with a circulation mechanism, it is ensured that the key components of the starter can be fully lubricated every time it is started. This design not only effectively reduces friction and wear, but also significantly improves the working efficiency and service life of the starter.

[0026] 2. Automatic oil replenishment mechanism: The linkage between the starter output shaft and the circulation mechanism is used to realize automatic circulation replenishment of the lubricating oil. This mechanism does not require manual intervention, which not only saves maintenance costs but also improves the reliability and stability of the system.

[0027] 3. Periodic lubrication maintenance: By adding a periodic oil supply unit, the present invention can regularly replenish oil to each active position of the starter according to the number of starts of the starter. This periodic lubrication maintenance strategy further extends the service life of the starter and reduces mechanical failures caused by insufficient lubrication.

[0028] 4. Improve overall performance and reliability: By optimizing the lubrication and oil replenishment mechanism, the present invention significantly improves the overall performance and reliability of the automobile starter. Whether under harsh working conditions or under frequent starting conditions, the starter can maintain a good working condition, providing a strong guarantee for the smooth starting of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the starter of the present invention;

[0030] Figure 2 For the present invention Figure 1 Schematic diagram of the local cross-section structure;

[0031] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 4 This is a schematic diagram of the internal structure of the gear ring of the present invention;

[0033] Figure 5 This is a schematic diagram of the internal structure of the oil storage barrel of the present invention;

[0034] Figure 6 For the present invention Figure 5 Another structural diagram;

[0035] Figure 7 It is a schematic diagram of the structure of the periodic pressing mechanism of the present invention;

[0036] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure of area A in the middle.

[0037] In the figure: 1, starter housing; 11, gear ring; 12, starter motor drive shaft; 13, starter output shaft; 2, oil storage unit; 21, oil storage barrel; 3, circulation mechanism; 31, oil inlet pipe; 32, oil outlet pipe; 33, first one-way outlet valve; 34, first one-way inlet valve; 35, second one-way inlet valve; 36, second one-way outlet valve; 37, first piston rod; 38, sealing member; 4, linkage member; 41, traction plate; 5, periodic oil supply unit; 51, oil supply barrel; 5 2. Oil supply pipe; 53. Third one-way inlet valve; 54. Third one-way outlet valve; 55. Periodic suction unit; 56. Second piston rod; 57. Periodic top pressure mechanism; 571. Mounting seat; 572. Drive rod; 573. Cam; 574. Ratchet mechanism; 575. Connecting rod; 576. First traction rod; 577. Second traction rod; 578. Damping retaining ring; 579. Elastic member; 580. Spring; 6. Planet carrier; 7. Planet pinion; 8. Sun gear. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example 1: Please refer to Figure 1-8The present invention provides a technical solution: a new type of reduction mechanism for an automobile starter, comprising a starter housing 1, in which a ring gear 11 is embedded, and a planet carrier 6 and a planet pinion 7 are sequentially assembled inside the ring gear 11. At the same time, a sun gear 8 that precisely meshes with the planet pinion 7 is arranged on the starter motor drive shaft 12.

[0040] The gear ring 11 adopts a unique hollow design with through holes on both sides. The starter motor drive shaft 12 passes through the holes of the gear ring 11 through a high-performance sealed bearing to ensure that the inside of the gear ring 11 can be filled with lubricating oil to achieve efficient lubrication.

[0041] In order to maintain a continuous supply and circulation of lubricating oil in the ring gear 11, the present mechanism introduces an oil storage unit 2. The oil storage unit 2 is composed of an oil storage barrel 21 fixed to one side of the ring gear 11, and a circulation mechanism 3 is cleverly arranged between the two. The circulation mechanism 3 is connected to the starter output shaft 13 (that is, a shaft mounted on the starter motor drive shaft 12 using a sliding key sleeve, on which a starter gear is arranged, and the electromagnetic fork of the starter pushes the starter output end to move to engage the starter gear with the engine for driving) through a linkage 4 to ensure that the lubricating oil in the ring gear 11 can be driven to circulate and renew each time the starter is started.

[0042] Specifically, the circulation mechanism 3 includes an oil inlet pipe 31 and an oil outlet pipe 32 fixedly penetrating the adjacent side walls of the oil storage barrel 21 and the gear ring 11. The oil inlet pipe 31 and the oil outlet pipe 32 are respectively installed with a first one-way outlet valve 33 and a first one-way inlet valve 34 inside the gear ring 11 to prevent the lubricating oil from flowing back. At the same time, a second one-way inlet valve 35 and a second one-way outlet valve 36 are respectively fixed on the oil inlet pipe 31 and the oil outlet pipe 32 inside the oil storage barrel 21 to ensure the directional flow of the lubricating oil. Furthermore, a first piston rod 37 is provided in the oil inlet pipe 31 and the oil outlet pipe 32, and these piston rods extend to the outside of the oil storage barrel 21. The oil inlet pipe 31 and the oil outlet pipe 32 are provided with a seal 38 at one end close to the oil storage barrel 21. The seal 38 can be a rubber plug, and the piston rod passes through the rubber plug to prevent the internal lubricating oil from leaking out. The seal 38 is closely connected with the starting action of the starter through the linkage 4 (specifically, the traction plate 41 fixed on the starter output shaft 13), that is, when the electromagnetic fork swing starter output shaft moves, the first piston rod 37 will move at the same time, so that the lubricating oil in the oil storage barrel 21 can be pumped into the oil inlet pipe 31 and driven into the gear ring 11, and at the same time, the lubricating oil in the gear ring 11 can be pumped into the oil outlet pipe 32 and driven into the oil storage barrel 21;

[0043] By independently setting the oil storage barrel 21, since the heat generated during the gear meshing and high-speed transmission is relatively large, the oil temperature in the oil storage barrel 21 can be kept relatively low. Then, the oil temperature in the gear ring 11 can be effectively reduced by circulating the lubricating oil in the oil storage barrel 21 and the gear ring 11. In this way, the gears can be better lubricated and the heat can be dissipated when the starter is frequently used, which can effectively extend the service life of the lubricating oil and the gears.

[0044] Secondly, since the oil immersion depth in the gear ring 11 is limited, the design of the external oil storage barrel 21 allows as much lubricating oil as possible to participate in lubrication when the amount of oil immersed in the gear ring 11 is constant, making the cooling effect more significant.

[0045] In addition, the mechanism is also equipped with a periodic oil supply unit 5, which is intended to regularly lubricate and replenish the various active positions of the starter according to the number of times the starter is started. Specifically, the core of the periodic oil supply unit 5 is the oil supply barrel 51 in the oil storage barrel 21, which is connected to the oil outlet pipe 32 through the oil supply pipe 52. A third one-way inlet valve 53 is provided in the middle section of the oil supply pipe 52 to ensure the one-way flow of the lubricating oil. A third one-way outlet valve 54 is also installed on the oil supply barrel 51 to accurately deliver the lubricating oil to various active positions of the starter through the oil guide pipe.

[0046] In order to achieve periodic lubrication and oil replenishment, a second piston rod 56 is provided in the oil supply pipe 52, and a periodic pressing mechanism 57 is provided. The periodic pressing mechanism 57 is composed of a mounting seat 571 mounted on the oil storage barrel 21, a rotatably mounted driving rod 572, a cam 573, a ratchet mechanism 574, a connecting rod 575, a first traction rod 576, a second traction rod 577, a damping retaining ring 578 and an elastic member 579 (specifically a spring 580 sleeved on the second piston rod 56) and other components. The damping retaining ring 578 is designed to limit the rotation of the driving rod 572 when the ratchet mechanism 574 is idling, so as to ensure that the cam 573 continues to rotate in one direction to ensure accurate cycle. This complex and precise mechanism can, according to the number of starts of the starter, through the cumulative effect of the ratchet mechanism 574, The driving connecting rod 575, the first traction rod 576 and the second traction rod 577, and then the cam 573 are driven to rotate continuously through the traction plate 41, and the cam 573 is used to squeeze the second piston rod 56 to move at a fixed position, so that after a certain number of uses, only the cam 573 at the corresponding position will trigger oil replenishment, and the elastic member 579 automatically drives the second piston rod 56 to reset after the second piston rod 56 is pressed, so as to automatically pump out oil, so that the lubrication effect of the remaining positions of the starter does not need to be replenished in time to ensure lubrication. The purpose of setting periodic oil replenishment is that the lubricating oil has a certain effective lubrication cycle. Adding new lubricating oil during this cycle can improve the lubrication effect, but the corresponding lubricating oil may splash and drop from the active position, causing waste and affecting the cleanliness of the starter.

[0047] It should be noted that the oil supply pipe 52 is not limited to being connected to the oil outlet pipe 32, but can also be directly connected to the oil storage barrel 21 to solve the problem of the unbalanced inflow and outflow of lubricating oil in the gear ring 11 and the continuous reduction in the above-mentioned design;

[0048] In addition, the oil outlet and oil inlet amounts can be set by reasonably setting the apertures of the oil outlet pipe 32 and the oil inlet pipe 31, which can also avoid the above-mentioned problems.

[0049] Embodiment 2: The present invention provides a technical solution: Different from the above-mentioned embodiment 1, the oil storage unit 2 of this embodiment is upgraded to an intelligent oil storage module, including an oil storage barrel 21, an oil level sensor and an intelligent control unit. The oil level sensor monitors the amount of lubricating oil in the oil storage barrel in real time, and the intelligent control unit controls the oil replenishing process according to the data of the oil level sensor.

[0050] The circulation mechanism 3 is still arranged between the oil storage barrel 21 and the ring gear 11, but a solenoid valve and a flow meter are added to achieve more accurate lubricating oil supply control. The solenoid valve is opened or closed according to the instruction of the intelligent control unit, and the flow meter monitors the flow of the lubricating oil in real time.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0052] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A novel speed reduction mechanism for a vehicle starter, comprising a ring gear (11) arranged in a starter housing (1), characterized in that: A planet carrier (6) and a planet pinion (7) are arranged in sequence in the gear ring (11), and a sun gear (8) engaging with the planet pinion (7) is arranged on the starter motor drive shaft (12). The gear ring (11) is a hollow shell structure with through holes on both sides. The starter motor drive shaft (12) penetrates the opening of the gear ring (11) by means of a sealed bearing so that lubricating oil is arranged in the gear ring (11); It also includes an oil storage unit (2), a circulation mechanism (3) is provided between the oil storage unit (2) and the ring gear (11), and a linkage member (4) is provided between the circulation mechanism (3) and the starter output shaft (13), so that the starter circulates the lubricating oil in the ring gear (11) each time it is started, thereby ensuring that the automobile engine starts normally; The circulation mechanism (3) is also connected to a periodic oil supply unit (5) for periodically lubricating and replenishing oil at each active position of the starter. Oil is replenished at each active position of the starter periodically according to the number of times the starter is started, so that the lubricating oil is reused, making the starter more energy-efficient.

2. The novel speed reduction mechanism for automobile starter according to claim 1 is characterized in that: The oil storage unit (2) comprises an oil storage barrel (21) fixed on the gear ring (11), and the circulation mechanism (3) is arranged between the oil storage barrel (21) and the gear ring (11) and is used to transfer lubricating oil in the gear ring (11) and the oil storage barrel (21).

3. The novel speed reduction mechanism for automobile starter according to claim 2 is characterized in that: The oil storage barrel (21) is a cover structure with an opening on one side and is seamlessly fixed to one side of the gear ring (11). The starter motor drive shaft (12) penetrates the oil storage barrel (21) using a sealed bearing.

4. The novel speed reduction mechanism for automobile starter according to claim 3 is characterized in that: The circulation mechanism (3) simultaneously fixes an oil inlet pipe (31) and an oil outlet pipe (32) penetrating the oil storage barrel (21) and the adjacent side walls of the gear ring (11); one end of the oil inlet pipe (31) and the oil outlet pipe (32) located in the gear ring (11) is respectively provided with a first one-way outlet valve (33) and a first one-way inlet valve (34); A second one-way inlet valve (35) and a second one-way outlet valve (36) are respectively passed through and fixed to a section of the oil inlet pipe (31) and the oil outlet pipe (32) located inside the oil storage barrel (21); A first piston rod (37) is provided in the oil inlet pipe (31) and the oil outlet pipe (32). The first piston rod (37) is located on a side of the second one-way inlet valve (35) and the second one-way outlet valve (36) away from the gear ring (11), and both extend to the outside of the oil storage barrel (21). The linkage member (4) is connected to the first piston rod (37) to drive the first piston rod (37) to move when the starter is started.

5. The novel speed reduction mechanism for automobile starter according to claim 4 is characterized in that: A sealing member (38) is provided at one end of the oil inlet pipe (31) and the oil outlet pipe (32) close to the oil storage barrel (21), and the first piston rod (37) slides through the sealing member (38).

6. The novel speed reduction mechanism for automobile starter according to claim 5 is characterized in that: The linkage member (4) comprises a traction plate (41) fixed on the starter output shaft (13), and the first piston rod (37) is connected to the traction plate (41).

7. The novel speed reduction mechanism for automobile starter according to claim 6 is characterized in that: The periodic oil supply unit (5) comprises an oil supply barrel (51) arranged in an oil storage barrel (21), an oil supply pipe (52) is connected and fixed between the oil supply barrel (51) and the oil outlet pipe (32), a third one-way inlet valve (53) is arranged in the middle section of the oil supply pipe (52), and a third one-way outlet valve (54) is also connected and fixed on the oil supply barrel (51), and the third one-way outlet valve (54) uses the oil guide pipe to respectively deliver lubricating oil to various active parts of the starter; A periodic suction unit (55) is provided between the oil supply pipe (52) and the traction plate (41) to replenish oil to each active position of the starter after the starter has started a fixed number of times.

8. The novel speed reduction mechanism for automobile starter according to claim 7 is characterized in that: The oil supply pipe (52) is fixedly passed through the oil storage barrel (21), and the periodic suction unit (55) includes a second piston rod (56) arranged in the oil supply pipe (52), and the second piston rod (56) extends to the outside of the oil storage barrel (21); A periodic pressing mechanism (57) connecting the second piston rod (56) and the traction plate (41) is arranged on the outside of the oil storage barrel (21).

9. The novel speed reduction mechanism for automobile starter according to claim 8 is characterized in that: The periodic pressing mechanism (57) comprises a mounting seat (571) fixed on the oil storage barrel (21), a driving rod (572) being rotatably mounted on the mounting seat (571), a cam (573) whose end contacts the second piston rod (56) being mounted on one end of the driving rod (572), and a ratchet mechanism (574) being arranged on the other end of the driving rod (572); A connecting rod (575) is installed on the outer ring of the ratchet mechanism (574), and a first traction rod (576) and a second traction rod (577) are installed in sequence between the other end of the connecting rod (575) and the traction plate (41) by means of a rotating shaft; A damping ring (578) in contact with the driving rod (572) is also provided on the driving rod (572) to limit the rotation of the driving rod (572) when the ratchet mechanism (574) is idling, and an elastic member (579) is provided on the second piston rod (56) to automatically drive the second piston rod (56) to reset after the second piston rod (56) is pressed.

10. The novel speed reduction mechanism for automobile starter according to claim 9 is characterized in that: The elastic member (579) includes a spring (580) sleeved on the second piston rod (56) and having two ends respectively connected to the oil storage barrel (21) and the end of the second piston rod (56).

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