Transmission and vehicle

Abstract

The utility model provides a transmission and a vehicle, relates to the technical field of vehicle parts, the transmission comprises an input shaft, a pipe fitting and a clutch, the input shaft is internally provided with a mounting groove extending along the axial direction, the pipe fitting is at least partially inserted into the mounting groove, the extension direction of the pipe fitting is consistent with that of the mounting groove, and the clutch is arranged in the mounting groove. A first flow channel is formed between the outer wall of the pipe fitting and the groove wall of the mounting groove, a second flow channel is formed in the pipe fitting, the first flow channel is used for supplying lubricating cooling liquid to the transmission, and the second flow channel is used for supplying driving liquid to a piston cavity of the clutch. According to the input shaft, only the mounting groove with the large cross section size needs to be machined in the input shaft, the pipe fitting is inserted into the mounting groove to divide the mounting groove into the two parts, the first flow channel is formed between the outer portion of the pipe fitting and the side wall of the mounting groove, the second flow channel is formed in the pipe fitting, a plurality of long and thin oil channels do not need to be machined in the input shaft, and the machining difficulty is small.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle parts, and in particular to a transmission and a vehicle. Background Art

[0002] Compared with ordinary fuel vehicles, new energy vehicles have the advantages of energy saving and emission reduction. With the increasing global carbon emission requirements, new energy vehicles have developed rapidly. Hybrid transmission is one of the key structures of new energy vehicles. There are two types of hybrid transmissions: hybrid transmissions without gears and hybrid transmissions with gears. For hybrid transmissions with gears, not only low-pressure hydraulic oil is needed to lubricate the clutch and other related parts on the input shaft to ensure the reliability of the hybrid transmission, but also high-pressure hydraulic oil needs to be provided to the clutch to drive the clutch to engage and disengage. In this way, multiple slender oil passages need to be arranged on the input shaft. Not only is the processing technology difficult, but also a larger shaft diameter input shaft needs to be selected to arrange multiple slender oil passages, which increases the overall weight and processing cost of the transmission. Utility Model Content

[0003] The utility model aims to solve the technical problems of great difficulty and high cost in machining the input shaft of the existing transmission.

[0004] On the one hand, the utility model provides a transmission, including an input shaft, a pipe fitting and a clutch, wherein the interior of the input shaft is provided with a mounting groove extending in the axial direction, the pipe fitting is at least partially inserted into the mounting groove, and the extension direction of the pipe fitting is consistent with that of the mounting groove, a first flow channel is formed between the outer wall of the pipe fitting and the groove wall of the mounting groove, and a second flow channel is formed inside the pipe fitting, the first flow channel is used to supply lubricating coolant to the transmission, and the second flow channel is used to supply driving fluid to the piston chamber of the clutch.

[0005] Optionally, the transmission also includes a transmission housing, which is covered on the outside of the input shaft, and a limit groove is provided on the bottom wall of the mounting groove. One end of the pipe is inserted into the limit groove and has an interference fit with the limit groove, and the other end of the pipe extends from the notch of the mounting groove and abuts against the transmission housing.

[0006] Optionally, the first flow channel is provided with a first outlet on the groove wall of the mounting groove, and the groove wall of the limiting groove is provided with a second outlet, the second outlet is communicated with the second flow channel, and the input shaft is provided with a first connecting channel connected with the first outlet and a second connecting channel connected with the second outlet, an end of the first connecting channel away from the first outlet points to the balance chamber and / or friction plate of the clutch, and an end of the second connecting channel away from the second outlet points to the piston chamber.

[0007] Optionally, the transmission also includes a direct-drive gear and a plurality of bearings, wherein the direct-drive gear is located inside the transmission housing, the input shaft is rotatably connected to the direct-drive gear and the transmission housing through corresponding bearings, and the first flow channel is used to supply lubrication coolant to each bearing.

[0008] Optionally, the multiple bearings include a first bearing, and the input shaft is rotatably connected to the transmission housing through the first bearing at one end of the slot near the mounting groove, the first flow channel forms a third outlet at the slot of the mounting groove, and a third connecting channel connected to the third outlet is formed between the transmission housing and the axial end face of the input shaft, and the end of the third connecting channel away from the third outlet points to the first bearing.

[0009] Optionally, the multiple bearings also include a second bearing, and one end of the transmission housing away from the slot of the mounting slot is rotatably connected to the input shaft through the second bearing, the first flow channel is provided with a fourth outlet on the slot wall of the mounting slot, and the input shaft is provided with a fourth connecting channel connected to the fourth outlet, and one end of the fourth connecting channel away from the fourth outlet points to the second bearing.

[0010] Optionally, the multiple bearings also include a third bearing, the direct drive gear is rotatably connected to the input shaft via the third bearing, the first flow channel is provided with a fifth outlet on the groove wall of the mounting groove, and the input shaft is provided with a fifth connecting channel connected to the fifth outlet, and an end of the fifth connecting channel away from the fifth outlet points to the third bearing.

[0011] Optionally, the transmission also includes a first sleeve and a second sleeve, the first sleeve and the second sleeve are sequentially sleeved on the input shaft, the first sleeve is located between the first bearing and the direct drive gear, and the second sleeve is located between the first sleeve and the clutch and is used to install the third bearing.

[0012] Optionally, a first inlet is provided at a position on the transmission housing corresponding to the third communication channel, and the first inlet is communicated with the third communication channel;

[0013] And / or, a second inlet is provided on the transmission housing at a position corresponding to the end of the pipe extending out of the mounting groove, and the second inlet is communicated with the second flow channel;

[0014] And / or, the transmission further comprises a sealing gasket, and one end of the pipe member extending out of the mounting groove is sealedly connected to the transmission housing through the sealing gasket.

[0015] On the other hand, the present invention also provides a vehicle, comprising the above-mentioned transmission. The advantages of the vehicle compared with the prior art are the same as those of the above-mentioned transmission, and will not be described again.

[0016] The transmission and vehicle of the utility model have at least the following advantages compared with the prior art:

[0017] An axially extending mounting groove is provided inside the input shaft, and the pipe is at least partially inserted into the mounting groove. The mounting groove is divided into two parts by the pipe extending axially along the input shaft, and a first flow channel is formed between the outside of the pipe and the groove wall of the mounting groove, and low-pressure cooling oil flows in the first flow channel to lubricate and cool the corresponding parts of the transmission, so as to improve the operation stability and reliability of the corresponding parts of the transmission (such as the clutch, the direct drive gear and the input shaft); a second flow channel is formed inside the pipe, and high-pressure power oil flows in the second flow channel. The high-pressure power oil is supplied to the piston cavity of the clutch through the second flow channel to drive the clutch to engage and disengage, thereby meeting the technical needs of the clutch to engage and disengage. At the same time, due to the use of the transmission described in the utility model, only one mounting groove with a larger cross-sectional size or a blind hole with a larger aperture needs to be processed on the input shaft. Compared with the existing method of setting multiple slender oil channels on the input shaft, the processing technology is less difficult, and an input shaft with a smaller shaft diameter can be used, and the overall weight of the transmission is lighter and the processing cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a partial structural schematic diagram of a transmission according to an embodiment of the utility model;

[0019] Figure 2 This is a flow path diagram of the lubricating coolant and the driving fluid inside the transmission of an embodiment of the utility model; wherein the thin arrows represent the flow path of the lubricating coolant, and the thick arrows represent the flow path of the driving fluid.

[0020] Description of reference numerals:

[0021] 1. Input shaft; 101. Mounting groove; 102. First flow channel; 103. Limiting groove; 104. First connecting channel; 105. Second connecting channel; 106. Third connecting channel; 107. Fourth connecting channel; 108. Fifth connecting channel; 2. Pipe fitting; 201. Second flow channel; 3. Clutch; 301. Balance chamber; 302. Friction plate; 303. Piston chamber; 304. Steel plate; 305. Piston; 4. Transmission housing; 401. First inlet; 402. Second inlet; 5. Direct drive gear; 6. First bearing; 7. Second bearing; 8. Third bearing; 9. First bushing; 10. Second bushing; 11. Sealing gasket; 12. Oil seal. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0023] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "matched" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In addition, it should be noted that in the description of the present invention, it should be noted that the terminology nouns in the various embodiments, such as "upper", "lower", "front", "back" and other words indicating directions, are only for simplifying the description of the positional relationship based on the drawings in the specification, and do not mean that the components and devices referred to must be operated in accordance with the specific directions and specified operations and methods and structures in the specification. Such directional nouns do not constitute a limitation on the present invention.

[0025] In this article, an X-axis is established. It should be noted that the aforementioned X-axis is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0026] In this article, Figure 1 and Figure 2 The partial structure of the transmission is only schematically drawn, specifically showing a schematic diagram of half of the transmission structure with the axis of the input shaft 1 as the symmetrical dividing line.

[0027] like Figure 1-Figure 2 As shown, a transmission of an embodiment of the utility model includes an input shaft 1, a pipe 2 and a clutch 3, wherein the input shaft 1 is provided with a mounting groove 101 extending in the axial direction, the pipe 2 is at least partially inserted into the mounting groove 101, and the extension direction of the pipe 2 is consistent with that of the mounting groove 101, a first flow channel 102 is formed between the outer wall of the pipe 2 and the groove wall of the mounting groove 101, and a second flow channel 201 is formed inside the pipe 2, the first flow channel 102 is used to supply lubricating coolant to the transmission, and the second flow channel 201 is used to supply driving fluid to the piston chamber 303 of the clutch 3.

[0028] The clutch 3 includes an inner hub, an outer hub, a friction plate 302, a steel plate 304, a return spring and a piston 305. The inner hub is sleeved on the outside of the input shaft 1 and connected to the direct drive gear 5. A balance chamber 301 is formed between the inner hub and the input shaft 1. The spring is located in the balance chamber 301. The outer hub is sleeved on the outside of the inner hub. A friction plate 302 and a steel plate 304 are provided between the outer hub and the inner hub. A piston chamber 303 is formed on one side of the friction plate 302 and the steel plate inside the outer hub. When there is no oil in the piston chamber 303, the clutch 3 is not engaged. When the second flow channel 201 supplies high-pressure power oil to the piston chamber 303, the piston 305 is pushed to move axially, and the friction plate 302 and the steel plate are pressed tightly, so that the clutch 3 can be engaged.

[0029] Specifically, the input shaft 1 may be an engine input shaft, extending in the direction indicated by the X-axis, that is, the axial direction of the input shaft 1 is in the direction indicated by the X-axis, a mounting groove 101 extending in the direction indicated by the X-axis is provided inside the input shaft 1, the groove opening faces the positive direction of the X-axis, the cross-sectional dimensions of the mounting groove 101 at various locations may be different, the mounting groove 101 may be a stepped groove, the pipe fitting 2 is a cylindrical pipe extending in the direction indicated by the X-axis, a gap is provided between the outer wall of the pipe fitting 2 and the side wall of the mounting groove 101, so as to form a first flow channel 102 therebetween, and a second flow channel 201 is formed inside the pipe fitting 2. The first flow channel 102 and the second flow channel 201 may be used as a low-pressure oil supply channel and a high-pressure oil supply channel, respectively, so as to provide cooling lubricating oil of the transmission and driving hydraulic oil of the clutch 3, respectively. The wall thickness of the pipe fitting 2 at various locations may be inconsistent.

[0030] In this embodiment, a pipe fitting 2 extending axially along the input shaft 1 is used to separate the installation groove 101 into two parts, and a first flow channel 102 is formed between the outside of the pipe fitting 2 and the groove wall of the installation groove 101. Low-pressure cooling oil can flow in the first flow channel 102, and the low-pressure cooling oil in the first flow channel 102 is used to lubricate and cool the corresponding parts of the transmission to improve the operating stability and reliability of the corresponding parts of the transmission (such as the clutch 3, the direct drive gear 5 and the input shaft 1); a second flow channel 201 is formed inside the pipe fitting 2, and high-pressure power oil can flow in the second flow channel 201. The high-pressure power oil is supplied to the piston chamber 303 of the clutch 3 through the second flow channel 201 to drive the clutch 3 to engage and disengage, thereby meeting the technical requirements of the clutch driving and disengaging. At the same time, due to the use of the transmission described in the utility model, only a mounting groove 101 with a larger cross-sectional size or a blind hole with a larger aperture needs to be processed on the input shaft 1. Compared with the existing method of setting multiple slender oil passages on the input shaft 1, the processing technology is less difficult, and an input shaft 1 with a smaller shaft diameter can be used. The overall weight of the transmission is lighter and the processing cost is lower.

[0031] It should be noted that the first flow channel 102 and the second flow channel 201 can be turned on at the same time, or one of them can be turned on, or neither of them can be turned on. According to the driving mode of the vehicle and the state of the clutch 3, it is determined whether the relevant structure in the transmission needs oil supply, that is, the conduction and oil supply of the first flow channel 102 and the second flow channel 201 are determined. Exemplarily, when the vehicle is running in parallel mode, the clutch 3 is engaged, and the first flow channel 102 and the second flow channel 201 are both turned on; when the vehicle is running in series mode, the clutch 3 is disengaged, the first flow channel 102 is turned on, and the second flow channel 201 is not turned on; in pure electric mode, the clutch is disengaged, and the first flow channel 102 and the second flow channel 201 are both not turned on.

[0032] Optionally, the transmission also includes a transmission housing 4, which is covered on the outside of the input shaft 1, and a limiting groove 103 is provided on the bottom wall of the mounting groove 101, one end of the pipe fitting 2 is inserted into the limiting groove 103 and has an interference fit with the limiting groove 103, and the other end of the pipe fitting 2 extends from the notch of the mounting groove 101 and abuts against the transmission housing 4.

[0033] Specifically, the transmission housing 4 may include a first shell portion, a second shell portion and a third shell portion that are detachably connected in sequence. The first shell portion, the second shell portion and the third shell portion are arranged in sequence along the direction indicated by the X-axis. During assembly, the input shaft 1 and related components can be inserted into the second shell portion first, and then the first shell portion and the third shell portion can be assembled. The detachable structure is adopted to facilitate the disassembly and assembly of internal structures such as the input shaft 1, pipe 2, clutch 3, etc.

[0034] One end of the pipe fitting 2 along the negative direction of the X-axis extends into the mounting groove 101 and is inserted into the limiting groove 103 of the bottom wall of the mounting groove 101. Through the interference fit between the one end of the pipe fitting 2 along the negative direction of the X-axis and the limiting groove 103, on the one hand, the second flow channel 201 and the first flow channel 102 inside and outside the pipe fitting 2 can be closed and separated at one end of the pipe fitting 2 to avoid mixing of high-pressure hydraulic oil and low-pressure hydraulic oil. On the other hand, the first flow channel 102 in the pipe fitting 2 can be connected with the limiting groove 103, and a channel connected to the limiting groove 103 can be provided on the input shaft 1 to realize the output of the hydraulic oil in the first flow channel 102; one end of the pipe fitting 2 along the positive direction of the X-axis extends out of the mounting groove 101 and is plugged into the first shell portion. In this way, the connection between the pipe fitting 2 and the input shaft 1 and the transmission housing 4 can be realized, and the second flow channel 201 can be separated from the first flow channel 102 at the other end of the pipe fitting 2 to avoid cross contamination of oil.

[0035] like Figure 1-Figure 2As shown, optionally, the first flow channel 102 is provided with a first outlet on the groove wall of the installation groove 101, and the groove wall of the limiting groove 103 is provided with a second outlet, the second outlet is connected with the second flow channel 201, and the input shaft 1 is provided with a first connecting channel 104 connected with the first outlet and a second connecting channel 105 connected with the second outlet, the first connecting channel 104 has an end away from the first outlet pointing to the balance chamber 301 and / or the friction plate 302 of the clutch 3, and the second connecting channel 105 has an end away from the second outlet pointing to the piston chamber 303.

[0036] In this embodiment, by setting a first outlet on the side wall of the mounting groove 101, setting a first connecting channel 104 connected to the first outlet on the input shaft 1, and the end of the first connecting channel 104 away from the first outlet points to the balance chamber 301 and / or the friction plate 302, the oil in the first flow channel 102 is supplied from the first outlet to the balance chamber 301 and / or the friction plate 302 through the first connecting channel 104, so that they are lubricated and cooled, ensuring the operating reliability of the transmission and improving the robustness of the transmission. Here, the first outlet can be set at a position of the first flow channel 102 close to the balance chamber 301 and / or the friction plate 302 of the clutch 3 to shorten the oil flow path, and the setting positions of other outlets below can also refer to this setting method in a similar manner.

[0037] One end of the pipe fitting 2 along the negative direction of the X-axis has a preset distance from the bottom of the limiting groove 103, and the oil in the second flow channel 201 can enter the limiting groove 103. By setting a second outlet on the groove wall of the limiting groove 103, a second connecting channel 105 connected to the second outlet is set on the input shaft 1, and one end of the second connecting channel 105 away from the second outlet points to the piston chamber 303. The oil in the second flow channel 201 is supplied from the second outlet to the piston chamber 303 through the second connecting channel 105, driving the clutch 3 to operate.

[0038] Here, the first communication passage 104 may be arranged to extend in the radial direction of the input shaft 1 , and the second communication passage 105 may be arranged to be inclined relative to the radial direction of the input shaft 1 .

[0039] like Figure 1-Figure 2 As shown, optionally, the transmission also includes a direct-drive gear 5 and a plurality of bearings, wherein the direct-drive gear 5 is located inside the transmission housing 4, and the input shaft 1 is rotationally connected to the direct-drive gear 5 and the transmission housing 4 through corresponding bearings, respectively, and the first flow channel 102 is used to supply lubrication coolant to each of the bearings.

[0040] In this embodiment, the inner hub of the clutch 3 is connected to the direct drive gear 5. When the clutch 3 is engaged, the direct drive gear 5 and the input shaft 1 are relatively stationary and rotate synchronously. When the clutch 3 is not engaged, the direct drive gear 5 rotates relative to the input shaft 1.

[0041] Oil is supplied to each bearing on the input shaft 1 through the first flow channel 102, so that the bearings can also be cooled and lubricated, ensuring that the bearings can maintain normal operation during high-speed rotation, reducing friction loss, lowering the operating temperature of the bearings, extending the service life of the bearings, and ensuring the operating reliability of the transmission; in addition, since there is no need to open an additional slender oil channel on the input shaft 1 to supply oil to the bearings, multiple different components can be lubricated and cooled at the same time only through the first flow channel 102, which can greatly simplify the structure of the input shaft 1 and reduce the difficulty of its processing technology.

[0042] like Figure 1-Figure 2 As shown, optionally, the multiple bearings include a first bearing 6, and the input shaft 1 is rotatably connected to the transmission housing 4 through the first bearing 6 at one end of the slot near the mounting groove 101, and the first flow channel 102 forms a third outlet at the slot of the mounting groove 101, and a third connecting channel 106 connected to the third outlet is formed between the transmission housing 4 and the axial end surface of the input shaft 1, and the end of the third connecting channel 106 away from the third outlet points to the first bearing 6.

[0043] In this embodiment, one end of the input shaft 1 along the positive direction of the X-axis is rotatably connected to the first shell portion of the transmission housing 4 through the first bearing 6, so that the input shaft 1 can rotate relative to the transmission housing 4. A third communication channel 106 is formed between the end surface of the input shaft 1 along the positive direction of the X-axis and the first shell portion, and the hydraulic oil in the first flow channel 102 can flow to the first bearing 6 through the third communication channel to achieve lubrication and cooling of the first bearing 6. There is no need to process the communication channel flowing to the first bearing 6 on the input shaft 1, which simplifies the processing technology. Here, the third communication channel 106 can be curved.

[0044] like Figure 1 As shown, optionally, the multiple bearings also include a second bearing 7, and the end of the transmission housing 4 away from the slot of the mounting slot 101 is rotatably connected to the input shaft 1 through the second bearing 7, the first flow channel 102 is provided with a fourth outlet on the slot wall of the mounting slot 101, and the input shaft 1 is provided with a fourth connecting channel 107 connected to the fourth outlet, and the end of the fourth connecting channel 107 away from the fourth outlet points to the second bearing 7.

[0045] In this embodiment, one end of the input shaft 1 along the negative direction of the X-axis extends out of the third shell portion of the transmission housing 4, and the input shaft 1 is rotatably connected to the third shell portion through the second bearing 7. The side wall of the mounting groove 101 is provided with a fourth outlet, which can be provided at one end of the first flow channel 102 close to the second bearing 7. By machining a channel connecting the fourth outlet and the second bearing 7 on the input shaft 1, that is, the fourth connecting channel 107, the low-pressure cooling oil in the first flow channel 102 is supplied to the second bearing 7, which has a simple structure and convenient oil supply. An oil seal 12 is provided at one end of the second bearing 7 along the negative direction of the X-axis, and the oil seal 12 is located between the input shaft 1 and the transmission housing 4. The oil seal 12 is used for sealing to prevent the low-pressure coolant supplied to the second bearing 7 from flowing out of the gap between the input shaft 1 and the transmission housing 4.

[0046] like Figure 1-Figure 2 As shown, optionally, the multiple bearings also include a third bearing 8, the direct-drive gear 5 is rotatably connected to the input shaft 1 through the third bearing 8, the first flow channel 102 is provided with a fifth outlet on the groove wall of the mounting groove 101, and the input shaft 1 is provided with a fifth connecting channel 108 connected to the fifth outlet, and the end of the fifth connecting channel 108 away from the fifth outlet points to the third bearing 8.

[0047] In this embodiment, the third bearing 8 can be a needle bearing, and the rotation connection between the direct drive gear 5 and the input shaft 1 is realized through the third bearing 8. By setting a fifth outlet on the first flow channel 102, and processing a fifth connecting channel 108 connecting the fifth outlet and the third bearing 8 on the input shaft 1, the low-pressure cooling oil in the first flow channel 102 can be supplied to the third bearing 8, which has a simple structure and convenient oil supply, and avoids abnormal operation of the transmission due to excessive working temperature or wear of the third bearing 8.

[0048] like Figure 1 As shown, optionally, the transmission also includes a first sleeve 9 and a second sleeve 10, and the first sleeve 9 and the second sleeve 10 are sequentially sleeved on the input shaft 1, the first sleeve 9 is located between the first bearing 6 and the direct drive gear 5, and the second sleeve 10 is located between the first sleeve 9 and the clutch 3 and is used to install the third bearing 8.

[0049] Specifically, the first sleeve 9 and the second sleeve 10 are both provided with a shoulder at one end in the axial direction, that is, they are both T-shaped, the direct drive gear 5 is rotatably connected with the second sleeve 10 through the third bearing 8, the small end of the first sleeve 9 (the end without the shoulder) abuts against the end face of the first bearing 6, the large end of the first sleeve 9 (the end with the shoulder) abuts against the direct drive gear 5, the second sleeve 10 and the third bearing 8, and the large end of the second sleeve 10 abuts against the clutch 3. The first sleeve 9 and the second sleeve 10 can protect the input shaft 1 on the one hand, and can realize the positioning and assembly of the clutch 3, the direct drive gear 5 and the first bearing 6 and other related components on the input shaft 1 on the other hand.

[0050] In addition, the first sleeve 9 and the second sleeve 10 are both integral structures; and / or the pipe 2 is an integral structure. Designing the first sleeve 9 and the second sleeve 10 as an integral structure can ensure the sleeve strength, extend the service life, and reduce the number of parts of the transmission.

[0051] The pipe 2 is designed as an integrated structure. Compared with the method of designing the portion of the pipe 2 located in the installation groove 101 and the portion extending out of the installation groove 101 as separate parts, it can simplify the structure of the pipe 2 and reduce the number of parts of the transmission.

[0052] like Figure 1-Figure 2 As shown, optionally, a first inlet 401 is provided at a position on the transmission housing 4 corresponding to the third communication channel 106 , and the first inlet 401 is communicated with the third communication channel 106 ;

[0053] And / or, a second inlet 402 is provided on the transmission housing 4 at a position corresponding to the end of the pipe 2 extending out of the mounting groove 101, and the second inlet 402 is communicated with the second flow channel 201;

[0054] And / or, the transmission further includes a sealing gasket 11 , and one end of the pipe member 2 extending out of the mounting groove 101 is sealedly connected to the transmission housing 4 through the sealing gasket 11 .

[0055] In this embodiment, a first inlet 401 is provided at a position on the transmission housing 4 corresponding to the third connecting passage 106, and the first inlet 401 is connected to the third connecting passage 106, so that the low-pressure cooling oil entering the first inlet 401 can smoothly enter the first flow passage 102 after passing through the third connecting passage 106, thereby realizing refueling of the first flow passage 102.

[0056] One end of the pipe fitting 2 along the positive direction of the X-axis extends out of the mounting groove 101 and abuts against the transmission housing 4. By setting a second inlet 402 at a position corresponding to the end of the pipe fitting 2 along the positive direction of the X-axis on the transmission housing 4, the high-pressure power oil entering the second inlet 402 can smoothly enter the second flow channel 201, thereby realizing refueling of the second flow channel 201.

[0057] The sealing gasket 11 can be a dynamic sealing ring. The end of the pipe fitting 2 extending from the mounting groove 101 is sealed and connected to the transmission housing 4 through the sealing gasket 11, thereby ensuring the sealing performance between the pipe fitting 2 and the transmission housing 4, preventing the oil in the second flow channel 201 from entering the first flow channel 102 from the gap between the pipe fitting 2 and the transmission housing 4, or preventing the oil in the first flow channel 102 from entering the second flow channel 201 from the gap between the pipe fitting 2 and the transmission housing 4, so that the two oils will not contaminate each other.

[0058] Another embodiment of the present invention provides a vehicle, comprising the above-mentioned transmission. The advantages of the vehicle compared with the prior art are the same as those of the above-mentioned transmission, and will not be described again.

[0059] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A transmission, characterized in that: The invention comprises an input shaft (1), a pipe (2) and a clutch (3); the input shaft (1) is provided with an axially extending mounting groove (101) inside, the pipe (2) is at least partially inserted into the mounting groove (101), and the extending direction of the pipe (2) and the mounting groove (101) are consistent; a first flow channel (102) is formed between the outer wall of the pipe (2) and the groove wall of the mounting groove (101); a second flow channel (201) is formed inside the pipe (2); the first flow channel (102) is used to supply lubricating coolant to the transmission, and the second flow channel (201) is used to supply driving fluid to the piston chamber (303) of the clutch (3).

2. The transmission according to claim 1, characterized in that: It also comprises a transmission housing (4), the transmission housing (4) being arranged to cover the outside of the input shaft (1), the bottom wall of the installation groove (101) being provided with a limiting groove (103), one end of the pipe (2) being inserted into the limiting groove (103) and being interference fit with the limiting groove (103), and the other end of the pipe (2) being extended from the notch of the installation groove (101) and being in contact with the transmission housing (4).

3. The transmission according to claim 2, characterized in that: The first flow channel (102) is provided with a first outlet on the groove wall of the installation groove (101), and the groove wall of the limiting groove (103) is provided with a second outlet, the second outlet is communicated with the second flow channel (201), and the input shaft (1) is provided with a first connecting channel (104) connected with the first outlet and a second connecting channel (105) connected with the second outlet, the first connecting channel (104) having an end away from the first outlet pointing to the balance chamber (301) and / or the friction plate (302) of the clutch (3), and the second connecting channel (105) having an end away from the second outlet pointing to the piston chamber (303).

4. The transmission according to claim 2, characterized in that: It also includes a direct-drive gear (5) and a plurality of bearings, wherein the direct-drive gear (5) is located inside the transmission housing (4), the input shaft (1) is rotationally connected to the direct-drive gear (5) and the transmission housing (4) through the corresponding bearings, and the first flow channel (102) is used to supply lubricating coolant to each of the bearings.

5. The transmission according to claim 4, characterized in that: The plurality of bearings include a first bearing (6); the input shaft (1) is rotatably connected to the transmission housing (4) through the first bearing (6) at one end of the input shaft (1) close to the notch of the mounting groove (101); the first flow channel (102) forms a third outlet at the notch of the mounting groove (101); a third connecting channel (106) connected to the third outlet is formed between the transmission housing (4) and the axial end surface of the input shaft (1); and an end of the third connecting channel (106) away from the third outlet points to the first bearing (6).

6. The transmission according to claim 4, characterized in that: The plurality of bearings further include a second bearing (7); an end of the transmission housing (4) away from the slot of the mounting slot (101) is rotatably connected to the input shaft (1) via the second bearing (7); a fourth outlet is provided on the slot wall of the mounting slot (101) of the first flow channel (102); a fourth connecting channel (107) connected to the fourth outlet is provided on the input shaft (1); an end of the fourth connecting channel (107) away from the fourth outlet points to the second bearing (7).

7. The transmission according to claim 5, characterized in that: The plurality of bearings further include a third bearing (8), the direct drive gear (5) is rotatably connected to the input shaft (1) via the third bearing (8), the first flow channel (102) is provided with a fifth outlet on the groove wall of the mounting groove (101), the input shaft (1) is provided with a fifth connecting channel (108) connected to the fifth outlet, and an end of the fifth connecting channel (108) away from the fifth outlet points to the third bearing (8).

8. The transmission according to claim 7, characterized in that: The invention also comprises a first shaft sleeve (9) and a second shaft sleeve (10), wherein the first shaft sleeve (9) and the second shaft sleeve (10) are sequentially sleeved on the input shaft (1), the first shaft sleeve (9) is located between the first bearing (6) and the direct drive gear (5), and the second shaft sleeve (10) is located between the first shaft sleeve (9) and the clutch (3) and is used for mounting the third bearing (8).

9. The transmission according to claim 5, characterized in that: A first inlet (401) is provided at a position on the transmission housing (4) corresponding to the third communication channel (106), and the first inlet (401) is in communication with the third communication channel (106); And / or, a second inlet (402) is provided on the transmission housing (4) at a position corresponding to the end of the pipe (2) extending out of the mounting groove (101), and the second inlet (402) is connected to the second flow channel (201); And / or, it also includes a sealing gasket (11), and one end of the pipe (2) extending out of the installation groove (101) is sealedly connected to the transmission housing (4) through the sealing gasket (11).

10. A vehicle, characterized in that: Comprising a transmission as claimed in claim 9.

Images