TWI765367B - The structure of the lubricating oil circuit of the transmission gear box of the tricycle - Google Patents

Abstract

A lubricating oil circuit structure of a transmission gear box of a tricycle is arranged in a casing of the transmission gear box, a transmission gear group and lubricating oil are installed in the accommodating space of the casing, and the lubricating oil circuit structure of the transmission gear box comprises a lubricating oil circuit structure arranged in the casing opposite to the casing. The first oil passage and the second oil passage are on the side walls on both sides and communicate with the accommodating space. The first oil passage inlet of the first oil passage corresponds to the tangential position behind the upper edge of the first gear part of the intermediate gear part, and the second oil passage The entrance of the second oil passage of the oil passage corresponds to the tangential position in front of the upper peripheral edge of the driven gear part of the driven gear part, whereby the lubricating oil level in the casing is lower than the axle, and the lower peripheral edge of the driven gear part is And the lower peripheral edge of the first gear part can be immersed in lubricating oil, and can use centrifugal force to send the first oil from the upper edge part of the first gear part and the upper edge part of the driven gear part to the first oil along the tangential direction respectively during rotation The oil channel and the second oil channel are guided between the second wheel axle and the casing, and then return to the accommodating space, so it can provide sufficient lubricating performance with a small amount of lubricating oil.

Description

The structure of the lubricating oil circuit of the transmission gear box of the tricycle

The present invention relates to the transmission gear box of the tricycle, especially the lubricating oil circuit structure in the transmission gear box.

The existing electric or fuel type tricycle structure adopts a single front wheel at the front end of the vehicle body, two rear wheels at the rear end of the vehicle body, and an electric motor or an internal combustion engine as a power source in the vehicle body. In order to enable its power source (electric motor or internal combustion engine) to synchronously drive the two rear wheels at the rear end of the vehicle, a transmission gearbox is installed between the power source and the two rear wheels at the rear end of the vehicle. The transmission gear set connects the mandrel of the power source and the coaxially opposite axle of the two rear wheels, so that the power source can drive the two rear wheels to rotate through the transmission gear set in the transmission gear box, so that the tricycle can be powered by the power source. while being driven.

Furthermore, in the existing transmission gear box, each part of the transmission gear set and the two axles are pivoted in the casing in combination with bearings to reduce the frictional resistance during rotation, and the casing is also filled with lubricating oil, The lubricating oil provides necessary lubrication, wear reduction and heat dissipation to the transmission gear set in the transmission gear box and the high-speed rotation of the two wheel shafts in the casing.

In the above-mentioned existing transmission gearbox, the lubricating oil filled in the casing is based on the requirement of providing lubrication to the transmission gear set and the two axles. Generally speaking, the filling amount of lubricating oil is close to the accommodating space inside the entire casing. Therefore, the existing transmission gearbox has problems that the amount of lubricating oil filled in the casing is too large, and the required lubricating oil cost is high.

The purpose of the present invention is to provide a lubricating oil path structure of the transmission gear box of a tricycle, so as to solve the problem that the lubricating oil filled in the transmission gear box of the existing tricycle must be immersed in the lubricating oil for the transmission gear set, the axle and the bearing provided by the axle. Too much oil and high cost of lubricating oil required.

In order to achieve the aforementioned purpose, the lubricating oil circuit structure of the transmission gear box of the tricycle proposed by the present invention is used to be arranged in the casing of the transmission gear box of a tricycle, and a transmission gear is installed in the accommodating space of the casing. set and filled with lubricating oil, the transmission gear set includes a driving gear part, an intermediate gear part, a driven gear part and a helical gear assembly, the driving gear part and the driven gear part are respectively pivoted on the casing Inside the front and rear sections, the helical gear assembly is installed inside the axle seat of the driven gear component, and the two helical gear components of the helical gear assembly can be respectively connected to the axle on both sides of the rear section of the casing, and the intermediate gear The part is pivoted inside the casing, and the first gear part of the intermediate gear part meshes with the driving gear part of the driving gear part, and the second gear part of the intermediate gear part is driven by the driven gear part. The gear parts are meshed with each other; wherein: the lubricating oil circuit structure of the transmission gear box includes a first oil passage and a second oil passage, and the first oil passage and the second oil passage are respectively arranged on the opposite side walls of the casing and In communication with the accommodating space, two ends of the first oil passage are respectively a first oil passage inlet and a first oil passage outlet, and the first oil passage inlet is located behind the upper edge of the first gear portion of the intermediate gear member The height position of the first oil passage outlet is lower than the first oil passage inlet, and the first oil passage outlet is located above one of the axles on the same side; the two ends of the second oil passage are respectively a A second oil passage inlet and a second oil passage outlet, the second oil passage inlet is located at a tangential position in front of the upper edge of the driven gear portion of the driven gear member, and the height of the second oil passage outlet is lower than The inlet of the second oil passage and the outlet of the second oil passage are located above the other axle on the same side; the liquid level of the lubricating oil filled in the accommodating space of the casing is lower than that of the axle, and at least The lower peripheral edge portion of the driven gear portion and the lower peripheral edge portion of the first gear portion of the intermediate gear member can be immersed in the lubricant In the oil, the lubricating oil adhering to the driven gear part and the lubricating oil adhering to the first gear part can be separated from the upper edge of the first gear part and the upper periphery of the driven gear part by the centrifugal force during rotation. The edges are respectively sent to the first oil passage and the second oil passage along the tangential direction, and are guided between the two wheel axles and the casing, and then return to the accommodating space.

With the invention of the lubricating oil circuit structure of the transmission gear box, when it is applied to the casing of the transmission gear box of the tricycle, the transmission gear set is driven to rotate, wherein the lubricating oil filled in the accommodating space of the casing casing will be separated from the lubricating oil. The liquid level is lower than the axle, and at least the lower peripheral edge of the driven gear part and the first gear part of the intermediate gear part can be immersed in lubricating oil, and the first gear part of the intermediate gear part is rotating while rotating. Provide lubricating oil to the driving gear part of its meshing driving gear part, the driven gear part of the driven gear part is in rotation, and at the same time supply lubricating oil to the second gear part of its meshing intermediate gear part, or, to the driven gear During the partial rotation, the lubricating oil can provide basic lubricating properties such as lubricating the helical gear components in the axle seat through the through hole of the axle seat.

More importantly, when the transmission gear set is driven to rotate, the lubricating oil adhering to the driven gear part and the lubricating oil adhering to the first gear part can use centrifugal force to make use of the transmission gear box lubricating oil circuit. And from the upper edge of the first gear part of the intermediate gear part to the first oil channel inlet of the first oil channel and the upper edge part of the driven gear part of the driven gear part respectively It is sent to the second oil channel inlet of the second oil channel along the tangent line forward, and the lubricating oil entering the first oil channel inlet and the second oil channel inlet respectively follows the first oil channel and the second oil channel. The channel flow is directed between the two axles and the casing, providing lubricating oil to the axles, and the excess lubricating oil is returned to the accommodating space, so that the accommodating space in the casing only needs to be filled with an appropriate amount of lubricating oil , that is, it can provide the necessary lubrication function for the two axles.

The lubricating oil circuit structure of the transmission gear box of the present invention can further be further provided with a rear oil seal cover between the rear section of the first shell cover and the rear section of the second shell cover and the axles on which they are pivoted, respectively. The two rear oil seal covers There is a lubricating oil between the bearings assembled at both ends of the axle seat of the driven gear component respectively. Oil temporary storage area, the lubricating oil temporary storage area respectively communicates with the accommodating space in the casing through the gap in the bearing set on the axle seat, and the first oil passage and the second oil passage are respectively connected to the second oil passage. the temporary storage area for lubricating oil. In this way, the lubricating oil passing through the first oil passage and the second oil passage can be temporarily stored in the lubricating oil temporary storage area, delaying the time for the lubricating oil to return to the accommodating space, and providing better lubricating performance for the two axles.

The lubricating oil circuit structure of the transmission gear box of the present invention can further make the first oil passage include a first guide groove and a first inner hole of the casing cover, and the first guide groove is set in the first casing cover The bottom of the first guide groove has a first guide plate with a front high and a low back, and the front end of the first guide groove is the inlet of the first oil passage and faces the first gear part of the intermediate gear member At the tangential position behind the upper edge, the inner hole of the first cover is set in the first cover and connected to the rear end of the first guide groove, and the end of the inner hole of the first cover is connected to the corresponding the outlet of the first oil passage of the temporary lubricating oil storage area at the The bottom of the second guide groove has a second guide plate with a low front and a high back, and the rear end of the second guide groove is the inlet of the second oil passage and faces the driven gear part. At the tangential position in front of the upper edge of the driven gear portion, the inner hole of the second cover is fixed in the second cover and connected to the front end of the second guide groove, and the end of the inner hole of the second cover It is the outlet of the second oil passage communicating with the lubricating oil temporary storage area at the corresponding position. Thereby, the structure of the first guide groove, the second guide groove and the first guide plate and the second guide plate inclined in a specific direction are used to match the intermediate gear member and the driven gear member. The direction of rotation is such that it can effectively receive the lubricating oil centrifugally thrown from the upper edge of the first gear part of the intermediate gear part and the upper edge part of the driven gear part of the driven gear part, and then pass through the first The direction of the wheel shaft corresponding to the guide position of the inner hole of the casing cover and the inner hole of the second casing cover enables the circulating flow of the lubricating oil to have better flow performance.

The lubricating oil path structure of the transmission gear box of the present invention can further make the first casing cover on the side of the outer peripheral edge of the first oil passage outlet facing the bearing adjacent to the first housing cover with a protruding downwardly protruding toward the direction of the axle corresponding to the position. The first side baffle; the second shell covers the outer peripheral edge of the second oil passage outlet facing its side adjoining One side of the bearing is provided with a second side baffle that protrudes downward toward the axle corresponding to the position, so as to use the first side baffle and the second side baffle to guide the lubricating oil to flow to the axle corresponding to the position, so as to provide the axle ratio. best lubricating properties.

10: Box shell

100: Accommodating space

101: Lubricant

102: Lubricant temporary storage area

103: Lubricating oil temporary storage area

104: Drain port

105: Oil filling port

106: Drain port plug

107: Oil filler plug

11: The first shell cover

12: Second shell cover

13: Gasket

14: Front oil seal cover

15: Rear oil seal cover

16: Rear oil seal cover

17: First side baffle

18: Second side baffle

20: Transmission gear set

21: Drive gear parts

210: Drive shaft

211: Drive gear part

212: Bearings

22: Intermediate gear parts

220: Intermediate shaft

221: The first gear section

222: Second gear section

23: driven gear part

230: Axle seat

2301: Through hole

2302: Bearings

231: driven gear part

24: Helical gear assembly

240: Shaft

241: Helical gear

242: Helical gear parts

243: Helical gear parts

30A: Axle

30B: Axle

50: The first oil passage

501: Entrance of the first oil passage

502: The first oil passage exit

51: The first diversion groove

52: The first deflector

53: The inner hole of the first shell cover

60: Second oil passage

601: The entrance of the second oil passage

602: Second oil passage outlet

61: The second diversion groove

62: Second deflector

63: The inner hole of the second shell cover

FIG. 1 is a schematic perspective view of a preferred embodiment of a transmission gearbox having a lubricating oil path structure for the transmission gearbox of the tricycle of the present invention.

FIG. 2 is a schematic three-dimensional appearance diagram of the transmission gear box shown in FIG. 1 from another viewing angle.

FIG. 3 is a schematic top plan view of the transmission gearbox shown in FIGS. 1 and 2 .

FIG. 4 is an exploded perspective view of the transmission gearbox shown in FIGS. 1 to 3 .

FIG. 5 is a perspective view showing the appearance of a first casing cover of the casing of the transmission gear box shown in FIGS. 1 to 4 .

FIG. 6 is a schematic plan view of the first cover of the case shown in FIG. 5 .

7 is a schematic plan view of the relative relationship between the first cover of the case shown in FIGS. 5 and 6 and some components of the transmission gear set.

FIG. 8 is a partial side cross-sectional schematic diagram of the position of the secant line A-A shown in FIG. 7 .

FIG. 9 is a perspective view showing the appearance of a second casing cover of the casing of the transmission gear box shown in FIGS. 1 to 4 .

FIG. 10 is a schematic plan view of the second cover of the case shown in FIG. 9 .

11 is a schematic plan view of the relative relationship between the second cover of the case shown in FIGS. 9 and 10 and some components of the transmission gear set.

FIG. 12 is a schematic partial side cross-sectional view of the position of the secant line B-B shown in FIG. 11 .

The lubricating oil circuit structure of the transmission gearbox of the tricycle of the present invention is applied to the transmission gearbox of a tricycle. The tricycle can use an electric motor or an internal combustion engine as a power source, and the transmission gearbox is connected to the power source of the tricycle and the two rear wheels. between. As shown in Figures 1 to 4, it is disclosed that there are A schematic diagram of the transmission gear box of the transmission gear box lubricating oil circuit structure of the present invention, the transmission gear box includes a casing 10, a transmission gear set 20 and two axles 30A, 30B, and the casing 10 has an accommodating space 100 inside, The transmission gear set 20 is installed in the accommodating space 100 of the casing, the accommodating space 100 of the casing can be filled with lubricating oil, and the transmission gear set 20 is used to connect the spindle of the power source (electric motor or internal combustion engine). (not shown), the two axles 30A, 30B are respectively pivoted on both sides (left and right sides) of the rear section of the casing 10, the two axles 30A, 30B are coaxially opposite and connected to the transmission gear set 20, the two axles 30A , 30B are used to connect the two rear wheels respectively (not shown).

As shown in FIG. 1 to FIG. 4 , lubricating oil 101 can be injected into the accommodating space 100 of the casing 10 , and the lubricating oil 101 provides a lubricating function during the transmission of the transmission gear set 20 . In the foregoing, a front oil seal cover 14 is provided on one side (right side) of the front section of the casing 10, and the transmission gear set 20 can pass through the front oil seal cover 14 and is connected to the spindle of the power source. The left and right sides) are respectively provided with a rear oil seal cover 15, 16, the two axles 30A, 30B respectively pass through the rear oil seal cover 15, 16 adjacent to the side thereof, and the front oil seal cover 14 and the box shell are arranged on one side of the front section of the casing 10. The oil seal covers 15 and 16 between the two sides of the rear section of the rear section and the axles 30A and 30B enable the transmission gear set 20 and the two axles 30A and 30B to maintain the rotation function and prevent the leakage of the lubricating oil in the casing 10 .

As shown in FIG. 4 , the transmission gear set 20 disposed in the accommodating space 100 of the casing 10 includes a driving gear part 21 , an intermediate gear part 22 , a driven gear part 23 and a helical gear assembly 24 .

As shown in FIG. 4 , FIG. 8 , and FIG. 12 , in the aforementioned transmission gear set 20 , the driving gear member 21 includes a driving shaft 210 and a driving gear portion 211 disposed on the driving shaft 210 , and the driving gear member 21 is pivoted Located in the front section of the accommodating space 100, the driving shaft 210 of the driving gear member 21 is pivoted on one side (right side) of the front section of the casing 10 in combination with the bearing 212, and the driving shaft 210 is used for connecting the spindle of the power source (not shown), in the preferred embodiment shown in the figure, the front oil seal cover 14 is provided on one side (right side in the figure) of the casing 10 , and the drive shaft 210 passes through the front oil seal cover 14 .

As shown in FIG. 4 , FIG. 8 , and FIG. 12 , in the aforementioned transmission gear set, the intermediate gear member 22 is pivoted in the accommodating space 100 , and the intermediate gear member 22 includes an intermediate shaft 220 , and is disposed in the middle A first gear portion 221 and a second gear portion 222 are arranged on the shaft 220 and are spaced along the axial direction. Both ends of the intermediate shaft 220 are pivoted on the left and right sides of the casing 10 . The diameter of the gear portion 222, the first gear portion 221 is meshed with the driving gear portion 211.

As shown in FIG. 4 , FIG. 8 , and FIG. 12 , in the aforementioned transmission gear set 20 , the driven gear member 23 is pivoted in the rear section of the accommodating space 100 , and the driven gear member 23 includes an axle seat 230 and a The driven gear portion 231, in this preferred embodiment, the axle seat 230 is a hollow body, and is pivoted in the casing 10 by the axle seat 230. The axle seat 230 can be two parts that are relatively combined, and the number of the axle seat 230 can be combined. The driven gear portion 231 is fixed on the axle seat 230 by screws, and the driven gear portion 231 is engaged with the second gear portion 222 of the intermediate gear member 22 .

As shown in FIG. 4 , FIG. 8 , and FIG. 12 , in the aforementioned transmission gear set 20 , the helical gear assembly 24 is installed inside the axle seat 230 of the driven gear member 23 , and the helical gear assembly 24 is used to connect the two Axles 30A, 30B. In this preferred embodiment, the helical gear assembly 24 includes a shaft 240, two helical gears 241, and two helical gear parts 242, 243. The shaft 240 and the driven gear part 23 are axially perpendicular to the shaft. In the axle seat 230, the two helical gear parts 242, 243 are pivoted in the axle seat 230 coaxially and axially opposite to the driven gear part 23, and each helical gear part 242, 243 has a connecting shaft portion and a device. On the helical gear portion of the connecting shaft portion, the two helical gears 241 are respectively mounted on the shaft rod 240 , and each helical gear 241 meshes with the helical gear portions of the two helical gear members 242 and 243 . The two helical gear components 242 and 243 are respectively connected with the axles corresponding to the positions of their connecting shafts. In the aforementioned driven gear part 23, the peripheral wall of the axle seat 230 of the driven gear part 23 is provided with a plurality of through holes corresponding to the part where the helical gear 241 of the helical gear assembly 24 meshes with the helical gear parts of the helical gear parts 242 and 243. Hole 2301.

In the preferred embodiment shown in FIG. 4 , FIG. 8 , and FIG. 12 , the case 10 includes a first cover 11 , a second cover 12 and a sealing gasket 13 , the second cover 12 is connected with the first cover 11 . A shell cover 11 can Relatively assembled, the sealing washer is disposed between the first shell cover 11 and the second shell cover 12 and is locked with a plurality of screws. The first shell cover and the second shell cover 12 are both hollow parts, and After the first case cover 11 and the second case cover 12 are combined with the sealing gasket 13 to face each other and merge the case 10 , the accommodating space 100 is formed inside the case 10 . The front oil seal cover 14 is provided in the front section of the first shell cover 11 , and the rear oil seal covers 15 and 16 are respectively provided in the rear section of the first shell cover 11 and the rear section of the second shell cover 12 .

As shown in FIG. 4 , FIG. 8 , and FIG. 12 , the transmission gear set 20 is located in the first housing cover 11 and the second housing cover 12 , and the driving gear portion 211 of the driving gear member 21 is located in the first housing cover 11 . , the drive shaft 210 of the drive gear part 21 is pivoted on the front section of the first housing cover 11 in combination with the bearing 212 , and the drive shaft 210 passes through the front oil seal cover 14 , and the front oil seal cover 14 is located at the bearing 212 combined with the drive shaft 210 Outside, the second gear portion 222 of the intermediate gear member 22 is located in the second casing 12, the first gear portion 221 is located in the first casing 11, and the driven gear portion 231 of the driven gear member 23 is located in the second casing cover 12, the two ends of the axle seat 230 of the driven gear member 23 are pivoted with bearings 2302 at the rear section of the first cover 11 and the rear section of the second cover 12, respectively, and the two rear oil seal covers 15 and 16 are located at the The outer side of the bearing 2302 which the two ends of the axle seat 230 are combined with, the two axles 30A, 30B are respectively pivoted on the rear section of the first casing 11 and the rear section of the second casing 12, and the two axles 30A, 30B respectively pass through them The positions correspond to the rear oil seal covers 15 and 16 , and the two axles 30A and 30B are coaxially opposed to each other. In this preferred embodiment, there is a lubricating oil temporary storage area 102, 103 between the two rear oil seal covers 15, 16 and the bearings 31A, 31B combined with the two ends of the axles 30A, 30B, respectively. The temporary storage areas 102 and 103 respectively communicate with the accommodating space 100 in the housing 10 through the gaps in the bearing 2302 provided in the axle seat 230 .

As shown in FIG. 1 to FIG. 4 , FIG. 7 , FIG. 8 , FIG. 11 and FIG. 12 , the casing 10 is provided with an oil drain port 104 and an oil filling port 105 , and the oil drain port 104 communicates with the bottom of the accommodating space 100 . An oil drain plug 106 is provided, the oil injection port 105 communicates with the upper section of the accommodating space 100 and an oil injection port plug 107 is provided. When the lubricating oil 101 is injected into the casing 10, the lubricating oil 101 only needs to be located in the lower section of the accommodating space 100, the liquid level of the lubricating oil 101 is lower than the axles 30A, 30B, and at least the driven gear components twenty three The lower peripheral edge portion of the driven gear portion 231 and the lower peripheral edge portion of the first gear portion 221 of the intermediate gear member 22 are immersed in the lubricating oil 101 . Preferably, the level of the lubricating oil 101 is such that the lower part of the peripheral wall of the axle seat 230 of the driven gear part 23 is immersed in the lubricating oil 101, so that the lubricating oil 101 can pass through the axle seat 230 during the rotation of the transmission gear set 20. The through-hole of the helical gear assembly 24 provides lubrication, and provides lubricating oil 101 to the second gear part 222 of the intermediate gear part 22 through the driven gear part 231, and provides the driving gear through the first gear part 221 of the intermediate gear part 22. Section 211 supplies lubricating oil 101 .

As shown in FIGS. 5 to 8 and 9 to 12 , the lubricating oil passage structure is installed in the casing 10 and can communicate with the accommodating space 100 in the casing 10 . The combination of the road structure and the accommodating space 100 in the casing 10 provides a circulating circuit for the lubricating oil 101 filled in the accommodating space 100 of the casing 10, and is lubricated by immersion in the lower part of the accommodating space 100. The lower peripheral edge of the driven gear part 231 in the oil 101 and the first gear part of the intermediate gear part 22 automatically drive the lubricating oil 101 when rotating, and enter the lubricating oil passage structure by centrifugal force and then guide the two axles 30A, 30B Between the housing 10 and the housing 10, the accommodating space 100 in the housing 10 only needs to be filled with an appropriate amount of lubricating oil 101, and it is not necessary to completely fill the entire accommodating space 100 of the housing 10, that is, the two axles 30A can be filled. , 30B to provide the necessary lubrication.

As shown in FIGS. 5 to 8 and FIGS. 9 to 12 , the lubricating oil passage structure includes a first oil passage 50 and a second oil passage 60 , the first oil passage 50 and the second oil passage 60 They are respectively disposed in the side walls on opposite sides of the casing 10 and communicate with the accommodating spaces 100 in the casing 10 respectively. The two ends of the first oil passage 50 are respectively a first oil passage inlet 501 and a first oil passage outlet. 502, two ends of the second oil passage 60 are a second oil passage inlet 601 and a second oil passage outlet 602 respectively. The first oil passage inlet 501 is located at a tangential position behind the upper edge of the first gear portion 221 of the intermediate gear member 22, the height of the first oil passage outlet 502 is lower than the first oil passage inlet 501, and the first The oil gallery outlet 502 is located above one of the axles 30A on the same side. The second oil passage inlet 601 is located at a tangential position in front of the upper edge of the driven gear portion 231 of the driven gear member 23 , the height of the second oil passage outlet 602 is lower than the second oil passage inlet 601 , and the first The second oil passage outlet 602 is located above the other axle 30B on the same side. In this preferred embodiment, the first oil passage outlet 502 of the first oil passage 50 and the second oil passage outlet 602 of the second oil passage 60 are respectively communicated with the two rear oil seal covers 15 and 16 and the axle seat respectively. The lubricating oil temporary storage areas 102 and 103 between the bearings 2302 combined at both ends of the 230 .

In the preferred embodiment shown in FIGS. 5 to 8 , the first oil passage 50 includes a first guide groove 51 and a first inner hole 53 of the casing cover, and the first guide groove 51 is set in the first guide groove 51 . The inner side of the cover 11 has a first guide plate 52 at the bottom of the first guide groove 51 . The front end of the first guide groove 51 is the first oil passage inlet 501 and faces the intermediate gear member 22 At the tangential position behind the upper edge of the first gear portion 221 , the inner hole 53 of the first cover is set in the first cover 11 and connected to the rear end of the first guide groove 51 . The end of the cover inner hole 53 is the first oil passage outlet 502 that communicates with the lubricating oil temporary storage areas 102 and 103 at the corresponding positions. Preferably, the first air guide plate 52 is high in the front and low in the back, so that the lubricating oil 101 can automatically flow to the inner hole 53 of the first shell cover.

In the preferred embodiment shown in FIG. 9 to FIG. 12 , the second oil passage 60 includes a second guide groove 61 and a second inner hole 63 of the casing cover, and the second guide groove 61 is disposed in the first guide groove 61 . The inner side surface of the second housing cover 12, and the bottom of the second guide groove 61 has a second guide plate 62, the rear end of the second guide groove 61 is the second oil channel inlet 601, and faces the intermediate gear member The tangential position in front of the upper edge of the first gear portion 221 of The end of the inner hole 63 of the cover is the second oil passage outlet 602 that communicates with the lubricating oil temporary storage areas 102 and 103 at the corresponding positions. Preferably, the second baffle 62 is low in the front and high in the back, so that the lubricating oil 101 can automatically flow to the inner hole 63 of the second casing cover.

As shown in FIG. 5 to FIG. 8 and FIG. 9 to FIG. 12 , in the foregoing, the first housing cover 11 may also be provided with a side facing the outer peripheral edge of the first oil passage outlet 502 facing the bearing 2302 adjacent to it. The first side baffle 17 protruding downward in the direction of the axle 30A corresponding to the position; the second casing 12 can also be provided on the side of the outer peripheral edge of the second oil passage outlet 602 facing the bearing 2302 adjacent to it. toward the axle 30B corresponding to the position The second side baffle 18 protrudes downward in the direction, so as to use the first side baffle 17 and the second side baffle 18 to guide the lubricating oil 101 to an appropriate height position above the axles 30A and 30B corresponding to the closer positions, and then Through the action of gravity, it automatically flows downward to the axles 30A, 30B below it, reducing the influence of the airflow generated by the high-speed rotation of the axles 30A, 30B on the flow direction of the lubricating oil 101 released from the first oil passage 50 and the second oil passage 60. It is ensured that the lubricating oil 101 released from the first oil passage 50 and the second oil passage 60 can flow correctly to the two axles 30A and 30B.

As shown in Fig. 3, Fig. 4, Fig. 5 to Fig. 8 and Fig. 9 to Fig. 12, when the lubricating oil circuit structure of the transmission gear box of the present invention is applied to the casing 10 of the transmission gear box of the tricycle, during use, the The lubricating oil circuit is constructed in the casing 10 and communicates with the accommodating space 100 in the casing 10, that is, it can provide a circulating circuit for the lubricating oil 101 filled in the accommodating space 100 of the casing 10, and all the The first oil passage 50 and the second oil passage 60 of the lubricating oil circuit structure are in accordance with the rotational direction in which the driven gear member 23 and the intermediate gear member 22 of the transmission gear set 20 in the casing are driven, wherein the tricycle moves forward. In this state, the two axles 30A, 30B rotate in the forward direction from the rear to the front. Therefore, in the transmission gear set 20 of the transmission gear box, the driving gear member 21 driven by the power source is in the forward direction from the rear to the front. Rotation, the intermediate gear member 22 rotates in the reverse direction from the front to the rear, the driven gear member 23 and the two helical gear members 242 and 243 of the helical gear assembly 24 arranged in the axle seat 230 of the driven gear member 23 are from the rear. The forward rotation in the forward direction means that the first gear portion 221 of the intermediate gear member 22 rotates in the reverse direction from the front to the rear, and the driven gear portion 231 of the driven gear member 23 is rotated in the forward direction from the rear to the front. , so that the power source can drive the two axles 30A, 30B to rotate through the transmission gear set 20 in the transmission gear box after the connection of the wheels.

When the transmission gear set 20 in the transmission gear box is driven to rotate, as shown in FIGS. 5 to 8 and FIGS. 9 to 12 , the liquid of the lubricating oil 101 filled in the accommodating space 100 of the casing 10 The height is lower than that of the axles 30A and 30B, and at least the lower peripheral edge of the driven gear part 231 and the first gear part 221 of the intermediate gear part 22 can be immersed in the lubricating oil. The first gear portion 221 is in rotation, and at the same time provides lubrication to the driving gear portion 211 engaged with the driving gear member 21 . In the lubricating oil 101, the driven gear part 231 of the driven gear part 23 is in rotation, and the second gear part 222 of the intermediate gear part 22 meshed with the lubricating oil is supplied with lubricating oil at the same time. Preferably, the liquid level of the lubricating oil 101 in the casing 10 is such that the lower part of the peripheral wall of the axle seat 230 of the driven gear part 23 is immersed in the lubricating oil 101. When the driven gear part 231 rotates, the lubricating oil 101 Lubrication can be provided to the helical gear assembly 24 through the through hole 2301 of the axle seat 230 .

As shown in FIGS. 5 to 8 and 9 to 12 , on the other hand, when the transmission gear set 20 is driven to rotate, the lubricating oil adhered to the driven gear portion 231 is constructed by using the transmission gear box lubricating oil passage. The lubricating oil adhering to the first gear portion 221 can be sent to the first oil passage 50 from the upper edge portion of the first gear portion 221 of the intermediate gear member 22 toward the rear along the tangential position by centrifugal force. The first oil passage inlet 501 and the second oil passage inlet 601 of the second oil passage 60 along the tangential line from the upper edge of the driven gear portion 231 of the driven gear member 23 to the front, respectively enter the first oil passage inlet 601 . The lubricating oil entering from the oil passage inlet 501 and the second oil passage inlet 601 follows the flow of the first oil passage 50 and the second oil passage 60 and is guided between the two axles 30A, 30B and the casing 10, and the opposite sides of the axles 30A, 30B 30B provides lubricating oil, and the excess lubricating oil is returned to the accommodating space 100 , so that the accommodating space 100 in the casing 10 only needs to be filled with an appropriate amount of lubricating oil 101 instead of completely filling the entire casing 10 The accommodating space 100 can provide necessary lubrication functions for the two wheel axles 30A and 30B.

As shown in FIGS. 5 to 8 and 9 to 12 , in the foregoing, the lubricating oil circuit structure of the transmission gear box of the present invention can also utilize the rear section of the first shell cover 11 and the rear section of the second shell cover 12 with their pivots respectively. A rear oil seal cover 15 and 16 are respectively provided between the axles 30A and 30B. The two rear oil seal covers 15 and 16 are respectively opposite to the bearings 2302 assembled at both ends of the axle seat 230 of the driven gear member 23 . There is a lubricating oil temporary storage area 102, 103, the lubricating oil temporary storage areas 102, 103 are respectively communicated with the accommodating space 100 in the housing 10 through the gap in the bearing 2302 set by the axle seat 230, the first The oil passage 50 and the second oil passage 60 are respectively connected to the two lubricating oil temporary storage areas 102 and 103 . Thereby, through the first oil passage 50 and the second oil The lubricating oil 101 of the channel 60 can be temporarily stored in the lubricating oil temporary storage areas 102 and 103 , delaying the time for the lubricating oil 101 to return to the accommodating space 100 and providing better lubricating performance for the two axles 30A and 30B.

100: Accommodating space 101: Lubricant 11: The first shell cover 13: Gasket 21: Drive gear parts 211: Drive gear part 22: Intermediate gear parts 221: The first gear section 23: driven gear part 230: Axle seat 231: driven gear part 50: The first oil passage 501: Entrance of the first oil passage 51: The first diversion groove 52: The first deflector 53: The inner hole of the first shell cover

Claims (8)

A lubricating oil circuit structure of a transmission gear box of a tricycle is used to be arranged in a casing of a transmission gear box of a tricycle, a transmission gear set is installed in the accommodating space of the casing and filled with lubricating oil. The gear set includes a driving gear part, an intermediate gear part, a driven gear part and a helical gear assembly, the driving gear part and the driven gear part are respectively pivoted inside the front and rear sections of the casing, the helical gear assembly It is installed inside the axle seat of the driven gear component, and the two helical gear components of the helical gear component can be respectively connected to the axle on both sides of the rear section of the casing, and the intermediate gear component is pivoted inside the casing. , and the first gear part of the intermediate gear part meshes with the driving gear part of the driving gear part, and the second gear part of the intermediate gear part meshes with the driven gear part of the driven gear part; wherein: the transmission The lubricating oil passage structure of the gearbox includes a first oil passage and a second oil passage. The first oil passage and the second oil passage are respectively arranged on opposite side walls of the casing and communicate with the accommodating space. The two ends of the oil passage are respectively a first oil passage inlet and a first oil passage outlet. The first oil passage inlet is located at a tangential position behind the upper edge of the first gear portion of the intermediate gear member. The first oil passage The height position of the outlet is lower than the inlet of the first oil passage, and the outlet of the first oil passage is located above one of the axles on the same side; the two ends of the second oil passage are a second oil passage inlet and a second oil passage respectively. an oil passage outlet, the second oil passage inlet is located at a tangential position in front of the upper edge of the driven gear part of the driven gear part, the height position of the second oil passage outlet is lower than the second oil passage inlet, and the The second oil passage outlet is located above the other axle on the same side; the liquid level of the lubricating oil filled in the accommodating space of the casing is lower than that of the axle, and at least the lower peripheral edge of the driven gear part and the The lower peripheral edge of the first gear part of the intermediate gear part can be immersed in the lubricating oil, and the lubricating oil adhering to the driven gear part and the lubricating oil adhering to the first gear part can be freed by the centrifugal force during rotation. The upper edge part of the first gear part and the upper edge part of the driven gear part are respectively along the tangential direction It is sent to the first oil passage and the second oil passage and guided between the two wheel axles and the casing, and then returns to the accommodating space. The lubricating oil circuit structure of the transmission gear box of the tricycle as claimed in claim 1, wherein the casing comprises a first casing cover, a second casing cover and a sealing gasket, and the second casing cover is opposite to the first casing cover In combination, the sealing washer is arranged between the first casing cover and the second casing cover and is locked with a plurality of screws; the driving gear part of the driving gear component is located in the first casing cover, and the intermediate gear component is The first gear part is located in the first casing cover, the second gear part is located in the second casing cover, the driven gear part of the driven gear part is located in the second casing cover, the two axles are respectively pivoted at The rear section of the first casing cover and the rear section of the second casing cover, the first oil passage is set in the first casing cover, and the second oil passage is set in the second casing cover. The lubricating oil path structure of the transmission gear box of the tricycle as claimed in claim 2, wherein a rear oil seal cover is respectively provided between the rear section of the first cover and the rear section of the second cover and the axle on which it is pivoted ; The two ends of the axle seat of the driven gear component are pivoted on the rear section of the first shell cover and the rear section of the second shell cover, respectively, and the two rear oil seal covers are respectively located at the two ends of the wheel axle seat. On the outside, and between the two rear oil seal covers and the bearings combined with the two ends of the axle seat respectively, there is a lubricating oil temporary storage area, and the lubricating oil temporary storage area is respectively connected with the bearing through the gap in the axle seat. In the accommodating space in the casing, the first oil passage and the second oil passage are respectively connected to the two temporary lubricating oil storage areas. The lubricating oil circuit structure of the transmission gear box of the tricycle as claimed in claim 3, wherein the first oil passage comprises a first guide groove and a first inner hole of the casing cover, and the first guide groove is arranged in the first guide groove. The inner side of the first shell cover, and the bottom of the first guide groove has a first guide plate with a front high and a low back, the front end of the first guide groove is the inlet of the first oil passage, and faces the intermediate gear The tangential position behind the upper edge of the first gear portion of the component, the inner hole of the first cover is set in the first cover and connected to the first guide At the rear end of the flow groove, the end of the inner hole of the first shell cover is the first oil channel outlet that communicates with the lubricating oil temporary storage area at the corresponding position; the second oil channel includes a second guide groove and a second shell cover an inner hole, the second guide groove is arranged on the inner side surface of the second shell cover, and the bottom of the second guide groove has a second guide plate with a front low and a rear high, the rear of the second guide groove The end is the inlet of the second oil passage, and faces the tangential position in front of the upper edge of the driven gear part of the driven gear part. The inner hole of the second cover is set in the second cover and connected to the The front end of the second guide groove and the end of the inner hole of the second shell cover are connected to the second oil passage outlet of the lubricating oil temporary storage area at the corresponding position. The lubricating oil circuit structure of the transmission gear box of the tricycle as claimed in claim 4, wherein the first housing cover is provided with a position corresponding to the position on the side of the outer peripheral edge of the first oil passage outlet that faces the adjacent bearing. The first side baffle protrudes downward in the direction of the wheel shaft; the second shell cover is provided with a first side baffle protruding downward in the direction of the wheel shaft corresponding to the position on the side of the outer peripheral edge of the second oil passage outlet facing the bearing adjacent to it. Two side baffles. The transmission gear box lubricating oil circuit structure of any one of claims 1 to 5, wherein the peripheral wall of the axle seat of the driven gear part corresponds to the part where the helical gear of the helical gear assembly meshes with the helical gear part A plurality of through holes are provided, and the liquid level of the lubricating oil filled in the accommodating space reaches the lower section of the peripheral wall of the axle seat, so that the lubricating oil can flow to the helical gear assembly through the through holes of the axle seat. The lubricating oil circuit structure of the transmission gear box of the tricycle according to any one of claims 1 to 5, wherein the casing is provided with an oil drain port and an oil filling port, and the oil drain port communicates with the bottom of the accommodating space and An oil drain plug is provided, the oil injection port is connected to the upper section of the accommodating space and is provided with an oil injection port plug. The lubricating oil circuit structure of the transmission gear box of the tricycle as claimed in claim 6, wherein the casing is provided with an oil drain port and an oil filling port, the oil drain port is connected to the bottom of the accommodating space and is provided with an oil drain port plug , the oil filling port communicates with the upper section of the accommodating space and is provided with an oil filling port plug.

Images