Gear transmission mechanism for new energy automobile

Abstract

A gear transmission mechanism for a new energy automobile comprises a first gear and a second gear which are meshed. A plurality of first oil cavities are annularly distributed in the first gear, first oil inlet holes and first oil outlet holes are formed in the first oil cavities, the first oil outlet holes are located in the side face of the first gear, and at least part of the first oil cavities of the first gear are soaked in oil. A pressure assembly is assembled in the first oil cavity and used for applying pressure to oil entering the first oil cavity so that the oil can flow out of the first oil outlet hole. A plurality of second oil cavities are annularly distributed in the second gear, second oil holes are formed in the second oil cavities, the second oil holes are located in the side face of the second gear and correspond to the first oil outlet holes, and oil storage blocks are arranged in the second oil cavities. Compared with the prior art, the lubricating effect of gear transmission can be improved, the service life of the gear is prolonged, and oil can be saved.

Description

Technical Field

[0001] The present invention belongs to the field of gears for new energy vehicles, and in particular relates to a gear transmission mechanism for new energy vehicles. Background Art

[0002] In the transmission system of new energy vehicle gearbox, gear transmission is the key component to achieve power transmission and speed change. In order to ensure the normal operation of gears and extend their service life, lubrication is a very important link. Traditional automotive gearbox lubrication methods mainly include oil bath lubrication, oil spray lubrication and oil drip lubrication. Although these methods can meet the lubrication needs of gears to a certain extent, there are still some obvious disadvantages.

[0003] 1. Complex structure: Existing automotive transmission lubrication systems usually require complex structures to ensure that the lubricating oil can be evenly distributed to each gear surface. For example, the design and arrangement of components such as oil pumps, oil channels, and nozzles increase the complexity of the system. This complexity not only increases manufacturing costs, but also increases the difficulty of maintenance and repair. In addition, complex structures may also lead to reduced system reliability and prone to failure.

[0004] 2. Large amount of oil required: Traditional lubrication methods usually require a large amount of lubricating oil to ensure the lubrication effect of the gears. This not only increases the operating cost, but may also lead to waste of lubricating oil. Excessive lubricating oil will also increase the friction loss of the system and reduce the transmission efficiency. Especially under long-term operation and high-load conditions, the consumption of lubricating oil is more significant.

[0005] In summary, the existing gear lubrication technology in the transmission structure of automobile gearboxes has obvious deficiencies in terms of structural complexity and lubricant consumption. Therefore, a new lubrication technology is urgently needed to solve these problems and improve the overall performance and service life of the gear transmission system. Summary of the invention

[0006] In order to solve the above technical problems, the present invention is solved by the following technical solutions.

[0007] A gear transmission mechanism for a new energy vehicle comprises a first gear and a second gear that are meshed.

[0008] The first gear has a plurality of first oil chambers arranged in the inner ring, and the first oil chambers are provided with first oil inlet holes and first oil outlet holes, and the first oil outlet holes are located on the side of the first gear, and at least part of the first oil chamber of the first gear is immersed in oil. A pressure assembly is installed in the first oil chamber, and the pressure assembly is used to pressurize the oil entering the first oil chamber so that it flows out from the first oil outlet holes.

[0009] The second gear has a plurality of second oil chambers arranged in the inner ring. The second oil chambers are provided with second oil holes. The second oil holes are located on the side of the second gear and correspond to the first oil outlet holes. The second oil chambers are equipped with oil storage blocks.

[0010] As a preferred technical solution for a gear transmission mechanism for new energy vehicles, the first oil chamber is a fan-shaped chamber, the pressure assembly includes a pressure plate, a torsion spring shaft is mounted on the pressure plate, the torsion spring shaft is mounted at the center of the fan-shaped chamber, and the side of the pressure plate abuts against the inner wall of the first oil chamber. The fan-shaped chamber includes a first radius surface and a second radius surface, and the extension line of the second radius surface passes through the gear axis. In a stationary state, the pressure plate abuts against the first radius surface.

[0011] As an optimal technical solution for a gear transmission mechanism for new energy vehicles, the first oil outlet hole is located on the extension line of the second radius surface.

[0012] As a preferred technical solution for a gear transmission mechanism for a new energy vehicle, at least the side portion of the pressure plate is made of a soft rubber material.

[0013] As an optimal technical solution for a gear transmission mechanism for new energy vehicles, the oil storage block in the second oil chamber includes a plurality of radially distributed oil absorption layers, and the oil absorption capacity of the plurality of oil absorption layers decreases radially from the inside to the outside.

[0014] As an optimal technical solution for a gear transmission mechanism for new energy vehicles, an oil storage block is also installed in the first oil chamber.

[0015] As a preferred technical solution for a gear transmission mechanism for new energy vehicles, the first oil inlet hole is located on the axial end face of the first gear and passes through the first gear.

[0016] As a preferred technical solution for a gear transmission mechanism for a new energy vehicle, the first gear is assembled from a first half body and a second half body, and the second gear is assembled from a third half body and a fourth half body. The first half body, the second half body, the third half body and the fourth half body are all provided with assembly holes for assembly, and the assembly holes are distributed around the first oil chamber or the second oil chamber.

[0017] As a preferred technical solution for a gear transmission mechanism for new energy vehicles, the second gear is provided with through-going weight-reducing holes.

[0018] Compared with the prior art, this application has the following beneficial effects:

[0019] 1. By setting the first oil chamber with a pressure assembly in the first gear, the oil can be effectively transferred from the first gear to the second gear, so that the gear teeth and tooth groove surfaces of the second gear can be fully lubricated. This design allows the second gear to be fully lubricated even if it is not directly immersed in the oil, thereby improving the lubrication efficiency of the entire transmission system, and can adapt to various working conditions, extending the service life of the gears and the entire transmission system.

[0020] 2. The lubricating oil delivery system is directly integrated inside the gear transmission mechanism, and the oil is directly delivered to the gear surface, which is conducive to saving the use of oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional schematic diagram of the meshing assembly of the first gear and the second gear.

[0022] Figure 2 A cross-sectional view of the structure of the meshing assembly of the first gear and the second gear.

[0023] Figure 3 It is a schematic diagram of the structure of the first gear.

[0024] The following is a description of the markings in the accompanying drawings of the specification:

[0025] 100, first gear; 101, assembly hole; 110, first oil chamber; 111, first oil inlet hole; 112, first oil outlet hole; 120, pressure plate; 121, torsion spring shaft; 130, first half body; 140, second half body;

[0026] 200, second gear; 210, second oil chamber; 211, second oil hole; 220, oil storage block; 230, weight reduction hole; 240, third half body; 250, fourth half body. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] In the following embodiments, the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and therefore cannot be understood as limiting the present invention. In addition, the terms: first, second, etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present invention, unless otherwise clearly specified and limited, the terms: install, connect, connect, etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meaning of the above terms in this practicality according to the specific circumstances.

[0030] Reference Figures 1 to 3 , a gear transmission mechanism for a new energy vehicle, comprising a meshing first gear 100 and a second gear 200. The first gear 100 is provided with a plurality of first oil chambers 110 in an annular arrangement, and the first oil chamber 110 is provided with a first oil inlet hole 111 and a first oil outlet hole 112, and the first oil outlet hole 112 is located on the side of the first gear 100, and at least part of the first oil chamber 110 of the first gear 100 is immersed in oil. A pressure assembly is assembled in the first oil chamber 110, and the pressure assembly is used to pressurize the oil entering the first oil chamber 110 so that it flows out from the first oil outlet hole 112. The second gear 200 is provided with a plurality of second oil chambers 210 in an annular arrangement, and the second oil chamber 210 is provided with a second oil hole 211, and the second oil hole 211 is used to enter oil when docking with the first oil outlet hole 112 and to discharge oil at other times. The second oil hole 211 is located on the side of the second gear 200 and corresponds to the first oil outlet hole 112. The second oil chamber 210 is provided with an oil storage block 220, which is used to absorb and store the oil delivered by the first gear 100 and then deliver the oil to the surface of the second gear 200 through the second oil hole 211 under the centrifugal force generated by the rotation of the second gear 200. This design allows the second gear 200 to obtain sufficient lubrication even if it is not directly immersed in the oil.

[0031] The first oil chamber 110 is a fan-shaped chamber, and the pressure assembly includes a pressure plate 120. A torsion spring shaft 121 is mounted on the pressure plate 120. The torsion spring shaft 121 is mounted at the center of the circle of the fan-shaped chamber, and the side of the pressure plate 120 abuts against the inner wall of the first oil chamber 110. The fan-shaped chamber includes a first radius surface and a second radius surface, and the extension line of the second radius surface passes through the axis of the gear. In a stationary state, the pressure plate 120 abuts against the first radius surface under the action of the torsion spring. This design enables the pressure plate 120 to rotate by centrifugal force when the gear accelerates, exerting pressure on the oil in the first oil chamber 110, thereby effectively squeezing the oil out of the first oil outlet 112.

[0032] In addition, the first oil outlet hole 112 is located on the extension line of the second radius surface. This design ensures that the oil can flow out of the first oil outlet hole 112 smoothly regardless of the state of the pressure plate 120. The first oil inlet hole 111 is located on the axial end face of the first gear 100 and passes through the first gear 100. This design facilitates the entry of oil into the first oil chamber 110 from the outside, simplifies the oil circuit structure, and improves the convenience and efficiency of oil replenishment. At least the side portion of the pressure plate 120 is made of a soft rubber material. The soft rubber material can better fit the inner wall of the first oil chamber 110, reducing the possibility of leakage, and can produce appropriate deformation under pressure to improve the sealing and lubrication effects.

[0033] In order to reduce the manufacturing requirements of production, the first gear 100 is assembled by the first half body 130 and the second half body 140, and the second gear 200 is assembled by the third half body 240 and the fourth half body 250. The first half body 130, the second half body 140, the third half body 240 and the fourth half body 250 are all provided with assembly holes 101 for assembly, and the assembly holes 101 are distributed around the first oil chamber 110 or the second oil chamber 210. The split design is convenient for manufacturing and assembly, and the distribution of the assembly holes 101 ensures the sealing of the first oil chamber 110 and the second oil chamber 210. In addition, the second gear 200 is annularly provided with through weight-reducing holes 230. The design of the weight-reducing holes 230 reduces the weight of the gear and reduces the moment of inertia, thereby improving the response speed and transmission efficiency of the gear, while reducing energy consumption.

[0034] In the present application, the oil storage block 220 in the second oil chamber 210 includes a plurality of oil absorption layers distributed in the radial direction, and the oil absorption capacity of the plurality of oil absorption layers decreases in sequence from the inside to the outside in the radial direction. This design allows the oil to be more distributed at the bottom of the second oil chamber 210, reduces the oil pressure at the second oil hole 211, and makes it easier for the oil flowing out of the first oil chamber 110 to enter the second oil chamber 210, while ensuring that when the second oil chamber 210 is not connected to the first oil chamber 110, the oil can flow out smoothly under the centrifugal force generated by the rotation of the second gear 200.

[0035] As another embodiment, the first oil chamber 110 is also equipped with an oil storage block 220. The oil storage block 220 is used to store oil to prevent the oil from being squeezed out in a short time, ensuring that the first gear 100 can still provide sufficient oil under long-term operation or high-load conditions, thereby improving the reliability and durability of the system. At the same time, the oil storage block 220 also has a filtering function, which can filter impurities in the oil entering the oil chamber to prevent impurities from damaging the gear teeth and tooth groove surfaces when the gears are meshed and transmitted.

[0036] The technical solution described in this application can be widely used in various transmission components of automobiles that use gear transmission. For example, in a multi-stage gearbox of a new energy vehicle, the gear transmission mechanism needs to shift gears frequently. The centrifugal force generated by the frequent gear shifting is used in conjunction with the pressure assembly of the pressure assembly of the first gear 100 and the oil storage block 220 of the second gear 200 to ensure that the gear surface can be fully lubricated even under high-speed operation and high load, thereby reducing wear and friction losses.

[0037] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A gear transmission mechanism for a new energy vehicle, comprising a first gear (100) and a second gear (200) meshing with each other, characterized in that: A plurality of first oil chambers (110) are arranged in an inner ring of the first gear (100), and a first oil inlet hole (111) and a first oil outlet hole (112) are provided on the first oil chamber (110). The first oil outlet hole (112) is located on a side surface of the first gear (100), and at least part of the first oil chamber (110) of the first gear (100) is immersed in oil. A pressure component is installed in the first oil chamber (110), and the pressure component is used to pressurize the oil entering the first oil chamber (110) so that it flows out from the first oil outlet hole (112); The second gear (200) is provided with a plurality of second oil chambers (210) arranged in an inner ring. The second oil chamber (210) is provided with second oil holes (211). The second oil holes (211) are located on the side of the second gear (200) and correspond to the first oil outlet holes (112). An oil storage block (220) is installed in the second oil chamber (210).

2. A gear transmission mechanism for new energy vehicles according to claim 1, characterized in that: The first oil chamber (110) is a fan-shaped chamber, the pressure assembly comprises a pressure plate (120), a torsion spring shaft (121) is mounted on the pressure plate (120), the torsion spring shaft (121) is mounted at the center of the fan-shaped chamber, and the side surface of the pressure plate (120) abuts against the inner wall of the first oil chamber (110); The sector-shaped cavity comprises a first radius surface and a second radius surface, and an extension line of the second radius surface passes through the gear axis; in a stationary state, the pressure plate (120) abuts against the first radius surface.

3. A gear transmission mechanism for new energy vehicles according to claim 2, characterized in that: The first oil outlet hole (112) is located on the extension line of the second radius surface.

4. The gear transmission mechanism for new energy vehicles according to claim 2, characterized in that: At least a side surface portion of the pressure plate (120) is made of a soft rubber material.

5. The gear transmission mechanism for new energy vehicles according to claim 1, characterized in that: The oil storage block (220) in the second oil chamber (210) comprises a plurality of oil absorption layers distributed in the radial direction, and the oil absorption capacity of the plurality of oil absorption layers decreases sequentially from the inside to the outside in the radial direction.

6. The gear transmission mechanism for new energy vehicles according to claim 1, characterized in that: An oil storage block (220) is also installed in the first oil chamber (110).

7. The gear transmission mechanism for new energy vehicles according to claim 1, characterized in that: The first oil inlet hole (111) is located on the axial end surface of the first gear (100) and passes through the first gear (100).

8. The gear transmission mechanism for new energy vehicles according to claim 1, characterized in that: The first gear (100) is assembled from a first half body (130) and a second half body (140), and the second gear (200) is assembled from a third half body (240) and a fourth half body (250); the first half body (130), the second half body (140), the third half body (240) and the fourth half body (250) are all provided with assembly holes (101) for assembly, and the assembly holes (101) are distributed around the first oil chamber (110) or the second oil chamber (210).

9. The gear transmission mechanism for new energy vehicles according to claim 1, characterized in that: The second gear (200) is provided with through-going weight-reducing holes (230) arranged around its upper surface.

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