Gearbox and vehicle

Abstract

This utility model discloses a gearbox and a vehicle, comprising: an input shaft, with a first output gear and a second output gear respectively mounted on the input shaft via a first bearing and a second bearing; a shifting mechanism, including a shifting assembly and a shifting shaft, the shifting shaft having a first oil injection port and a second oil injection port; when the gearbox is in a low-speed state, the shifting assembly engages with the first output gear and the input shaft and disengages from the second output gear, the shifting assembly blocks the first oil injection port and opens the second oil injection port; when the gearbox is in a high-speed state, the shifting assembly disengages from the first output gear and engages with the second output gear and the input shaft, the shifting assembly opens the first oil injection port and blocks the second oil injection port. The gearbox of this utility model can selectively block the first or second oil injection port in different gears, that is, the oil injection volume of the first and second oil injection ports is variable, so as to adjust the oil injection volume to different bearings in different gears, resulting in better lubrication.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a transmission and a vehicle. Background Technology

[0002] The gearbox in the related technology typically includes an input shaft, multiple output gears, a shifting mechanism, and an output shaft. The multiple output gears are rotatably mounted on the input shaft via bearings. The shifting mechanism can select one of the multiple output gears to directly or indirectly output power to the output shaft, so as to output power outward through the output shaft.

[0003] However, due to the unreasonable design of the lubrication structure for the bearings in the gearbox in the relevant technology, it is impossible to guide sufficient lubricating oil to the bearing positions that require oil lubrication, which can easily lead to insufficient lubrication of the bearings and thus affect the service life of the bearings. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a gearbox that can selectively block a first or second oil injection hole at different gear positions, meaning the oil injection volume of the first and second oil injection holes is variable, thereby adjusting the amount of lubricating oil injected to different bearings at different gear positions for better lubrication.

[0005] This utility model also proposes a vehicle having the above-mentioned gearbox.

[0006] To achieve the above objectives, a gearbox is provided according to a first aspect of the present invention. The gearbox includes: an input shaft; a first output gear and a second output gear, wherein the first output gear is sleeved on the input shaft via a first bearing, and the second output gear is sleeved on the input shaft via a second bearing, and the first output gear and the second output gear are arranged axially along the input shaft; and a shifting mechanism, the shifting mechanism including a shifting assembly and a shifting shaft, wherein the shifting assembly is movably disposed on the shifting shaft, and the shifting shaft is provided with a first oil injection hole and a second oil injection hole, the first oil injection hole being used to inject oil into the first bearing. The transmission is configured to inject oil into the second bearing, and the second oil injection port is used to inject oil into the second bearing; wherein the transmission has a switchable low-speed state and a high-speed state; when the transmission is in the low-speed state, the shift assembly engages with the first output gear and the input shaft and disengages from the second output gear, the shift assembly blocks the first oil injection port and opens the second oil injection port; when the transmission is in the high-speed state, the shift assembly disengages from the first output gear and engages with the second output gear and the input shaft, the shift assembly opens the first oil injection port and blocks the second oil injection port.

[0007] Therefore, according to the embodiment of the present invention, the gearbox can selectively block the first oil injection hole or the second oil injection hole in different gears, that is, the oil injection volume of the first oil injection hole and the second oil injection hole can be changed, so as to adjust the oil injection volume of lubricating oil to different bearings in different gears, and the lubrication effect is better.

[0008] According to some embodiments of the present invention, the shifting assembly includes: a shift fork, which is movably sleeved on the shift shaft along the axial direction of the shift shaft, and the shift fork can selectively block the first fuel injection hole and the second fuel injection hole; and a shift engagement sleeve, which is connected to the shift fork, engages with the input shaft for transmission, and can selectively engage with the first output gear and the second output gear for transmission.

[0009] The above technical solution has the following advantages or beneficial effects: When the shift engagement sleeve meshes with the first output tooth, the shift fork can block the first oil injection hole, and at this time the second oil injection hole is in the open state. In this way, lubricating oil can flow through the second oil injection hole to the second bearing to lubricate the second bearing. When the shift engagement sleeve meshes with the second output tooth, the shift fork can block the second oil injection hole, and at this time the first oil injection hole is in the open state. In this way, lubricating oil can flow through the first oil injection hole to the first bearing to lubricate the first bearing.

[0010] According to some embodiments of the present invention, the input shaft is provided with a shift hub, the first output gear includes a first engaging tooth and a first output tooth arranged axially, the first engaging tooth being adjacent to the shift hub, and the shift engaging tooth sleeve selectively meshing with the first engaging tooth; and the second output gear includes a second engaging tooth and a second output tooth arranged axially, the second engaging tooth being adjacent to the shift hub, and the shift engaging tooth sleeve selectively meshing with the second engaging tooth.

[0011] The above technical solution has the following advantages or beneficial effects: the shift hub can mesh with the shift engagement sleeve, and the shift engagement tooth can selectively mesh with the first engagement tooth and the second engagement tooth, so that the shift hub can selectively be connected to the first engagement tooth and the second engagement tooth for transmission.

[0012] According to some embodiments of the present invention, the gearbox further includes: a first fuel injector, one end of which is connected to the shift shaft and communicates with the first fuel injection hole; a second fuel injector, one end of which is connected to the shift shaft and communicates with the second fuel injection hole; wherein, the first output gear is provided with a first through hole, and the other end of the first fuel injector communicates with the first bearing through the first through hole; the second output gear is provided with a second through hole, and the other end of the second fuel injector communicates with the second bearing through the second through hole.

[0013] The above technical solution has the following advantages or beneficial effects: When the gearbox is at high speed, lubricating oil can flow into the first injector through the first injection hole, and then flow to the first bearing through the first through hole. In this way, when the gearbox is at high speed, the first bearing can be lubricated by waterfall-style oil spraying through the first injector, thereby reducing the wear of the first bearing. When the gearbox is at low speed, lubricating oil can flow into the second injector through the second injection hole, and then flow to the second bearing through the second through hole. In this way, when the gearbox is at low speed, the second bearing can be lubricated by waterfall-style oil spraying through the second injector, thereby reducing the wear of the second bearing.

[0014] According to some embodiments of the present invention, the first fuel injector is provided with a first notch, and one side of the shifting assembly can selectively extend into the first notch to selectively block the first fuel injection hole; and / or, the second fuel injector is provided with a second notch, and the other side of the shifting assembly can selectively extend into the second notch to selectively block the second fuel injection hole.

[0015] The above technical solution has the following advantages or beneficial effects: When the transmission is at low speed, the shift fork can extend into the first notch to block the first fuel injector, allowing lubricating oil to flow into the second fuel injector only through the second fuel injector hole to lubricate the second bearing. When the transmission is at high speed, the shift fork can extend into the second notch to block the second fuel injector, allowing lubricating oil to flow into the first fuel injector only through the first fuel injector hole to lubricate the first bearing.

[0016] According to some embodiments of the present invention, the shift shaft is constructed with: an oil reservoir, the oil reservoir extending radially through the upper side of the shift shaft, and the bottom wall of the oil reservoir communicating with the first oil injection hole and the second oil injection hole; and a first axial oil passage extending axially along the shift shaft, and the first axial oil passage communicating with the oil reservoir.

[0017] The above technical solution has the following advantages or beneficial effects: the lubricating oil in the first shaft oil circuit can flow into the oil reservoir along the axial direction to form an oil circuit to replenish the oil in the oil reservoir, and the lubricating oil in the oil reservoir can flow from the oil reservoir into the first oil nozzle through the first oil injection hole to lubricate the first bearing, and the lubricating oil in the oil reservoir can flow from the oil reservoir into the second oil nozzle through the second oil injection hole to lubricate the second bearing.

[0018] According to some embodiments of the present invention, the gearbox further includes: a housing, the inner wall of the housing is provided with an oil storage tank, the bottom of the oil storage tank is provided with a plurality of oil guide holes, the plurality of oil guide holes are located above the oil storage tank; wherein, the housing is also provided with an oil guide rib, the oil guide rib protruding from the inner wall of the housing and used to guide lubricating oil to the oil storage tank.

[0019] The above technical solution has the following advantages or beneficial effects: Under the guidance of the oil guide rib, the lubricating oil splashed onto the inner wall of the tank can be collected in the oil storage tank, which can improve the efficiency of lubricating oil use. Furthermore, the oil guide hole is located above the oil storage tank, which allows the lubricating oil in the oil storage tank to flow back to the oil storage tank through the oil guide hole, so as to realize the repeated use of lubricating oil and achieve better lubrication effect.

[0020] According to some embodiments of the present invention, the gearbox further includes: a plurality of filter components, wherein the plurality of filter components are disposed in the oil storage tank and located at the oil guide hole, and the plurality of filter components correspond one-to-one with the plurality of oil guide holes.

[0021] The above technical solution has the following advantages or beneficial effects: by setting multiple filter components in the oil storage tank, the lubricating oil returning to the oil storage tank can be adsorbed and filtered to improve the cleanliness of the lubricating oil.

[0022] According to some embodiments of the present invention, the input shaft is provided with a second axial oil passage and a plurality of central holes. The second axial oil passage extends along the axial direction of the input shaft, the central holes extend along the radial direction of the input shaft, and the second axial oil passage communicates with the first bearing and the second bearing through the plurality of central holes.

[0023] The above technical solution has the following advantages or beneficial effects: the lubricating oil in the second shaft oil circuit can be thrown to the first bearing and the second bearing through multiple central holes to lubricate the first bearing and the second bearing. The flow rate of lubricating oil to the first bearing and the second bearing through multiple central holes is small. When the gearbox is in any gear, the lubricating oil can flow to the first bearing and the second bearing through the central holes to reduce the wear of the first bearing and the second bearing and extend the service life of the first bearing and the second bearing.

[0024] According to a second aspect of the present invention, a vehicle is provided, the vehicle including the gearbox described in the first aspect of the present invention.

[0025] According to the second aspect embodiment of the present invention, the vehicle utilizes the gearbox according to the first aspect embodiment of the present invention, which can selectively block the first or second oil injection hole at different gear positions, that is, the oil injection volume of the first and second oil injection holes is variable, so as to adjust the oil injection volume of lubricating oil to different bearings at different gear positions, resulting in better lubrication effect.

[0026] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0028] Figure 1 This is a structural schematic diagram of a gearbox according to an embodiment of the present utility model;

[0029] Figure 2 This is a structural schematic diagram of the gearbox according to another perspective of an embodiment of the present utility model;

[0030] Figure 3 This is a cross-sectional view of a gearbox according to an embodiment of the present utility model;

[0031] Figure 4 This is a schematic diagram of the shift fork according to an embodiment of the present utility model.

[0032] Figure label:

[0033] 1. Gearbox;

[0034] 100. Input shaft; 110. First output gear; 111. First engagement gear; 112. First output gear; 113. First through hole; 120. First bearing; 130. Second output gear; 131. Second engagement gear; 132. Second output gear; 133. Second through hole; 140. Second bearing; 150. Shift hub; 160. Second shaft oil passage; 161. Center hole;

[0035] 200. Gear shifting mechanism; 210. Gear shifting assembly; 211. Gear shift fork; 212. Gear shifting engagement sleeve; 213. First gear lever; 214. Second gear lever; 220. Gear shifting shaft; 221. First fuel injection port; 222. Second fuel injection port; 223. Oil reservoir; 224. First shaft oil passage;

[0036] 310. First fuel injector; 311. First notch; 320. Second fuel injector; 321. Second notch;

[0037] 400. Housing; 410. Oil reservoir; 411. Oil guide hole; 420. Oil guide rib. Detailed Implementation

[0038] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0039] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0040] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0041] In the description of this utility model, "multiple" means two or more, and "several" means one or more.

[0042] The gearbox 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0043] like Figures 1-4 As shown, the gearbox 1 according to an embodiment of the present invention includes an input shaft 100, a first output gear 110, a second output gear 130, and a shifting mechanism 200. The gearbox 1 in this embodiment can be an electric drive axle reduction gearbox, but is not limited thereto.

[0044] The first output gear 110 is sleeved on the input shaft 100 through the first bearing 120, and the second output gear 130 is sleeved on the input shaft 100 through the second bearing 140. The first output gear 110 and the second output gear 130 are arranged along the axial direction of the input shaft 100. The shifting mechanism 200 includes a shifting assembly 210 and a shifting shaft 220. The shifting assembly 210 is movably disposed on the shifting shaft 220. The shifting shaft 220 is provided with a first oil injection hole 221 and a second oil injection hole 222. The first oil injection hole 221 is used to spray oil into the first bearing 120, and the second oil injection hole 222 is used to spray oil into the second bearing 140.

[0045] The transmission 1 has switchable neutral, low-speed, and high-speed states. When the transmission 1 is in neutral, the shift assembly 210 engages with the input shaft 100 and disengages from the first output gear 110 and the second output gear 130. When the transmission 1 is in low-speed state, the shift assembly 210 engages with the first output gear 110 and the input shaft 100 and disengages from the second output gear 130. The shift assembly 210 blocks the first fuel injection port 221 and opens the second fuel injection port 222. When the transmission 1 is in high-speed state, the shift assembly 210 disengages from the first output gear 110 and engages with the second output gear 130 and the input shaft 100. The shift assembly 210 opens the first fuel injection port 221 and blocks the second fuel injection port 222.

[0046] For example, the first output gear 110 can be a low-speed output gear, the second output gear 130 can be a high-speed output gear, the first bearing 120 can be a low-speed bearing, and the second bearing 140 can be a high-speed bearing.

[0047] The shift shaft 220 and the input shaft 100 can be arranged in parallel. The shift assembly 210 can be located between the first output tooth 112 and the second output tooth 132 in the axial direction of the shift shaft 220. In this way, when the shift assembly 210 moves in different directions along the axial direction of the shift shaft 220, the shift assembly 210 can be selected to be connected to the first output tooth 112 or the second output tooth 132 to realize the gear shifting of the gearbox 1.

[0048] Furthermore, the first injection port 221 and the second injection port 222 can be located on both sides of the shift assembly 210 in the axial direction of the shift shaft 220. This allows the shift assembly 210 to block one of the first injection ports 221 and 222 when it moves axially along the shift shaft 220. In other words, when the transmission 1 shifts gears, the shift assembly 210 can block one of the first injection ports 221 and 222 to regulate the flow of lubricating oil.

[0049] According to the embodiment of the present invention, the gearbox 1 can selectively engage with the first output gear 110 and the second output gear 130 by driving the shift assembly 210 to move axially along the shift shaft 220, thereby realizing gear switching of the gearbox 1. This allows the power of the input shaft 100 to be transmitted to the output shaft via the shift assembly 210 and the first output gear 110 or the second output gear 130. Furthermore, while shifting gears, the gearbox 1 can selectively block the first oil injection hole 221 and the second oil injection hole 222 through the shift assembly 210 to flexibly control the flow direction of the lubricating oil. In this way, the flow rate of the lubricating oil to the first bearing 120 and the second bearing 140 can be adjusted according to the change of gear to meet the lubrication requirements of different bearings and ensure that the bearings are adequately lubricated.

[0050] Specifically, when the gearbox 1 is in neutral, the shift assembly 210 is disconnected from both the first output gear 110 and the second output gear 130. The power on the input shaft 100 cannot be transmitted to the first output gear 110 and the second output gear 130. At this time, the input shaft 100 does not need to input power, or the input shaft 100 is idling. The first output gear 110 and the second output gear 130 will rotate relative to the input shaft 100. The first oil injection hole 221 and the second oil injection hole 222 are both open. Lubricating oil can flow to the first bearing 120 through the first oil injection hole 221 and to the second bearing 140 through the second oil injection hole 222, ensuring that both the first bearing 120 and the second bearing 140 can be lubricated.

[0051] When the gearbox 1 is in a low-speed state, the shift assembly 210 engages with the first output gear 110 and disengages from the second output gear 130. At this time, the power on the input shaft 100 can be transmitted to the first output gear 110 through the shift assembly 210, meaning that the first output gear 110 and the input shaft 100 rotate together. The lubrication requirement of the first bearing 120 is low, while the second output gear 120 rotates relative to the input shaft 100, resulting in a higher lubrication requirement for the second bearing 140. At this time, the shift assembly 210 can block the first oil injection hole 221, while the second oil injection hole 222 is open. This allows lubricating oil to flow through the second oil injection hole 222 to the second bearing 140, thus reducing wear on the second bearing 140 and extending its service life.

[0052] When the gearbox 1 is in high-speed mode, the shift assembly 210 engages with the second output gear 130 and disengages from the first output gear 110. At this time, the power on the input shaft 100 can be transmitted to the second output gear 130 via the shift assembly 210, meaning the second output gear 130 and the input shaft 100 rotate together. The second bearing 140 has lower lubrication requirements, while the first output gear 110 rotates relative to the input shaft 100, resulting in higher lubrication requirements for the first bearing 120. At this time, the shift assembly 210 can block the second oil injection port 222, while the first oil injection port 221 remains open. This allows lubricating oil to flow through the first oil injection port 221 to the first bearing 120, lubricating it and reducing wear, thus extending its service life.

[0053] Thus, according to the embodiment of the present invention, the gearbox 1 can selectively block the first oil injection hole 221 or the second oil injection hole 222 in different gears, that is, the oil injection volume of the first oil injection hole 221 and the second oil injection hole 222 is variable, so as to adjust the oil injection volume of lubricating oil to different bearings in different gears, and the lubrication effect is better.

[0054] In some specific embodiments of this utility model, such as Figure 3 As shown, the shift assembly 210 includes a shift fork 211 and a shift engagement sleeve 212.

[0055] The shift fork 211 is movably sleeved on the shift shaft 220 along the axial direction of the shift shaft 220, and the shift fork 211 can selectively block the first fuel injection hole 221 and the second fuel injection hole 222. The shift engagement sleeve 212 is connected to the shift fork 211, and the shift engagement sleeve 212 meshes with the input shaft 100 for transmission, and the shift engagement sleeve 212 can selectively mesh with the first output gear 110 and the second output gear 130 for transmission.

[0056] The shift engagement sleeve 212 can move axially along the shift shaft 220 with the shift fork 211. When the shift engagement sleeve 212 meshes with the first output gear 112, the shift fork 211 can block the first oil injection hole 221. At this time, the second oil injection hole 222 is in the open state, so that the lubricating oil can flow to the second bearing 140 through the second oil injection hole 222 to lubricate the second bearing 140. The power on the input shaft 100 can be transmitted to the output shaft through the shift engagement sleeve 212 and the first output gear 110.

[0057] When the shift engagement sleeve 212 engages with the second output gear 132, the shift fork 211 can block the second oil injection hole 222. At this time, the first oil injection hole 221 is in the open state, so that the lubricating oil can flow through the first oil injection hole 221 to the first bearing 120 to lubricate the first bearing 120. In addition, the power on the input shaft 100 can be transmitted to the output shaft through the shift engagement sleeve 212 and the second output gear 130.

[0058] Furthermore, such as Figure 3 As shown, the input shaft 100 is provided with a shift hub 150, and the first output gear 110 includes a first engagement tooth 111 and a first output tooth 112 arranged along the axial direction. The first engagement tooth 111 is adjacent to the shift hub 150, and the shift engagement sleeve 212 selectively meshes with the first engagement tooth 111.

[0059] Furthermore, the second output gear 130 includes a second engagement tooth 131 and a second output tooth 132 arranged axially, the second engagement tooth 131 being adjacent to the shift hub 150, and the shift engagement sleeve 212 selectively engaging with the second engagement tooth 131.

[0060] The shift hub 150 can mesh with the shift engagement sleeve 212, and the shift engagement sleeve 212 can selectively mesh with the first engagement tooth 111 and the second engagement tooth 131, so that the shift hub 150 can selectively be connected to the first engagement tooth 111 and the second engagement tooth 131 for transmission.

[0061] For example, when the transmission 1 is at a low speed, the shift fork 211 can move towards the first output gear 110 so that the shift engagement sleeve 212 simultaneously engages with the first engagement tooth 111 and the shift hub 150. This allows the power from the input shaft 100 to be transmitted to the first engagement tooth 111 via the shift engagement sleeve 212 through the shift hub 150, thereby driving the first output tooth 112 to rotate. When the transmission 1 is at a high speed, the shift fork 211 can move towards the second output gear 130 so that the shift engagement sleeve... 212 engages with both the second engagement tooth 131 and the shift hub 150. This allows the power from the input shaft 100 to be transmitted to the second engagement tooth 131 via the shift hub 150, thereby driving the second output tooth 132 to rotate. When the gearbox 1 is in neutral, the shift engagement tooth 212 engages only with the shift hub 150. This prevents the power from the input shaft 100 from being transmitted to the first engagement tooth 111 via the shift hub 150, meaning that both the first output tooth 112 and the second output tooth 132 can stop rotating.

[0062] In some specific embodiments of this utility model, such as Figure 3As shown, the gearbox 1 also includes a first fuel injector 310 and a second fuel injector 320.

[0063] One end of the first fuel injector 310 is connected to the shift shaft 220 and communicates with the first fuel injection hole 221, and one end of the second fuel injector 320 is connected to the shift shaft 220 and communicates with the second fuel injection hole 222.

[0064] The first output gear 110 is provided with a first through hole 113, and the other end of the first fuel injector 310 is connected to the first bearing 120 through the first through hole 113. The second output gear 130 is provided with a second through hole 133, and the other end of the second fuel injector 320 is connected to the second bearing 140 through the second through hole 133.

[0065] For example, the first fuel injector 310 and the second fuel injector 320 can be connected to the shift shaft 220 by laser welding, screwing, interference fit, bonding, etc., and the first fuel injector 310 and the second fuel injector 320 can be metal pipes, stamped pipes, stamped oil guide plates, but are not limited to these.

[0066] Specifically, when the gearbox 1 is in high-speed mode, the input shaft 100 outputs power through the second output gear 130, and the first output gear 110 rotates relative to the input shaft 100. At this time, lubricating oil can flow into the first injector 310 through the first injection hole 221, and then flow to the first bearing 120 through the first through hole 113. In this way, when the gearbox 1 is in high-speed mode, the first bearing 120 can be lubricated by waterfall-style oil spraying through the first injector 310 to reduce the wear of the first bearing 120 and extend the service life of the first bearing 120.

[0067] When the gearbox 1 is in a low-speed state, the input shaft 100 outputs power through the first output gear 110, and the second output gear 130 rotates relative to the input shaft 100. At this time, lubricating oil can flow into the second injector 320 through the second injection hole 222, and then flow to the second bearing 140 through the second through hole 133. In this way, when the gearbox 1 is in a low-speed state, the second bearing 140 can be lubricated by waterfall-style oil spraying through the second injector 320, so as to reduce the wear of the second bearing 140 and extend the service life of the second bearing 140.

[0068] Furthermore, such as Figure 3 As shown, the first fuel injector 310 is provided with a first notch 311, and one side of the shift assembly 210 can selectively extend into the first notch 311 to selectively block the first fuel injection hole 221; and / or, the second fuel injector 320 is provided with a second notch 321, and the other side of the shift assembly 210 can selectively extend into the second notch 321 to selectively block the second fuel injection hole 222.

[0069] For example, along the axial direction of the shift shaft 220, a first lever 213 may be provided on one side of the shift fork 211, and a second lever 213 may be provided on the other side of the shift fork 211. When the transmission 1 is in a low-speed state, the first lever 213 can extend into the first notch 311 and block the first fuel injector 221, and the second lever 214 can exit from the second notch 321 to open the second fuel injector 222; while when the transmission 1 is in a high-speed state, the second lever 214 can extend into the second notch 321 and block the second fuel injector 222, and the first lever 213 can exit from the first notch 311 to open the first fuel injector 221.

[0070] Specifically, a first notch 311 can be provided on the side of the first fuel injector 310 facing the shift fork 211, and a second notch 321 can be provided on the side of the second fuel injector 320 facing the shift fork 211. When the transmission 1 is at low speed, the shift fork 211 can extend into the first notch 311 to block the first fuel injector 310, allowing lubricating oil to flow into the second fuel injector 320 only through the second injection hole 222 to lubricate the second bearing 140. When the transmission 1 is at high speed, the shift fork 211 can extend into the second notch 321 to block the second fuel injector 320, allowing lubricating oil to flow into the first fuel injector 310 only through the first injection hole 221 to lubricate the first bearing 120.

[0071] In some specific embodiments of this utility model, such as Figure 3 As shown, the shift shaft 220 is constructed with an oil reservoir 223 and a first shaft oil passage 224.

[0072] The oil reservoir 223 extends radially through the upper side of the shift shaft 220, and the bottom wall of the oil reservoir 223 is connected to the first oil injection hole 221 and the second oil injection hole 222. The first axial oil passage 224 extends axially along the shift shaft 220, and the first axial oil passage 224 is connected to the oil reservoir 223.

[0073] The first axial oil passage 224 can be connected to the oil reservoir 223, so that the lubricating oil in the first axial oil passage 224 can flow into the oil reservoir 223 axially to form an oil passage to replenish the oil in the oil reservoir 223. The lubricating oil in the oil reservoir 223 can flow from the oil reservoir 223 into the first oil injector 310 through the first oil injection hole 221 to lubricate the first bearing 120. The lubricating oil in the oil reservoir 223 can flow from the oil reservoir 223 into the second oil injector 320 through the second oil injection hole 222 to lubricate the second bearing 140.

[0074] Furthermore, by extending the oil reservoir 223 through the upper side of the shift shaft 220, lubricating oil splashed onto the inner wall of the housing 400 can drip back into the oil reservoir 223, allowing for repeated recycling and reuse of the lubricating oil. This improves the efficiency of lubricating oil usage, effectively creating another oil path for replenishing the oil in the oil reservoir 223. Thus, lubricating oil can flow to the oil reservoir 223 through two oil paths, ensuring timely replenishment and better lubrication of the first bearing 120 and the second bearing 140.

[0075] Furthermore, such as Figure 2 and Figure 3 As shown, the gearbox 1 also includes a housing 400, the inner wall of which is provided with an oil storage tank 410, and the bottom of the oil storage tank 410 is provided with a plurality of oil guide holes 411, which are located above the oil reservoir 223.

[0076] The housing 400 is also equipped with an oil guide rib 420, which protrudes from the inner wall of the housing 400 and is used to guide the lubricating oil to the oil reservoir 223.

[0077] Therefore, guided by the oil guide rib 420, the lubricating oil splashed onto the inner wall of the housing 400 can be collected in the oil storage tank 410, which can improve the efficiency of lubricating oil utilization. Furthermore, by providing multiple oil guide holes 411 at the bottom of the oil storage tank 410, and with the oil guide holes 411 located above the oil reservoir 223, the lubricating oil in the oil storage tank 410 can flow back to the oil reservoir 223 through the oil guide holes 411, achieving repeated recycling of the lubricating oil and improving lubrication. Moreover, providing multiple oil guide holes 411 can improve the efficiency of replenishing oil from the oil storage tank 410 to the oil reservoir 223.

[0078] Therefore, the oil storage tank 223 can have two oil return paths. One path is to collect lubricating oil in the oil storage tank 223 and then let it flow into the oil storage tank 410 through the oil guide hole 411. The other path is to directly return the lubricating oil to the oil storage tank 410 through the first shaft oil passage 224.

[0079] Furthermore, such as Figure 3 As shown, the gearbox 1 also includes multiple filter components (not shown in the attached figure). The multiple filter components are located in the oil reservoir 410 and at the oil guide hole 411, with each filter component corresponding to one of the multiple oil guide holes 411.

[0080] For example, the filter assembly may include all structural components with filtration properties such as magnets, filter elements, filter screens, and oil filter pumps, but is not limited to these, and multiple filter assemblies may be connected to the housing 400 by laser welding, screwing, interference fit, bonding, but not limited to these methods.

[0081] By installing multiple filter components in the oil storage tank 410, with each filter component corresponding to a different oil guide hole 411, the lubricating oil returning to the oil storage tank 410 can be adsorbed and filtered to improve its cleanliness. The cleaned lubricating oil can then flow into the oil storage tank 223 through the oil guide holes 411, and then flow through the oil storage tank 223 to the first oil injector 310 and the second oil injector 320, and finally to the first bearing 120 and the second bearing 140 for lubrication. This avoids lubricating oil containing impurities from lubricating the first bearing 120 and the second bearing 140, which helps reduce wear on the first bearing 120 and the second bearing 140, and thus further extends their service life.

[0082] In some specific embodiments of this utility model, such as Figure 3 As shown, the input shaft 100 is provided with a second axial oil passage 160 and a plurality of central holes 161. The second axial oil passage 160 extends along the axial direction of the input shaft 100, and the central holes 161 extend along the radial direction of the input shaft 100. The second axial oil passage 160 is connected to the first bearing 120 and the second bearing 140 through the plurality of central holes 161.

[0083] The second shaft oil passage 160 is connected to the first bearing 120 and the second bearing 140 through multiple center holes 161. Specifically, the second shaft oil passage 160 can be connected to the first bearing 120 through some of the center holes 161, and to the second bearing 140 through another portion of the center holes 161. This configuration allows the lubricating oil in the second shaft oil passage 160 to be thrown towards the first bearing 120 and the second bearing 140 through the multiple center holes 161 when the input shaft 100 rotates, thus lubricating both bearings.

[0084] Understandably, compared to the waterfall-style oil injection lubrication of the first bearing 120 by the first injector 310 and the waterfall-style oil injection lubrication of the second bearing 140 by the second injector 320, the flow rate of lubricating oil through the multiple central holes 161 to the first bearing 120 and the second bearing 140 is smaller. Furthermore, the lubricating oil can flow to the first bearing 120 and the second bearing 140 through the central holes 161 when the gearbox 1 is in any gear.

[0085] Therefore, when the gearbox 1 is in high-speed mode, the shift fork 211 blocks the first oil injection hole 221, preventing lubricating oil from passing through the first oil injector 310 to lubricate the first bearing 120. Since the lubrication requirement of the first bearing 120 is relatively low, the lubricating oil in the second shaft oil passage 160 can lubricate the first bearing 120 through the center hole 161, thus meeting the lubrication requirements of the first bearing 120. Of course, the lubricating oil in the second shaft oil passage 160 can also lubricate the second bearing 140 through the center hole 161.

[0086] When the gearbox 1 is at a low speed, the shift fork 211 blocks the second oil injection port 222, preventing lubricating oil from reaching the second bearing 140 through the second oil injector 320. Since the lubrication requirement of the second bearing 140 is relatively low, the lubricating oil in the second shaft oil passage 160 can lubricate the second bearing 140 through the center hole 161, thus meeting the lubrication needs of the second bearing 140. Of course, the lubricating oil in the second shaft oil passage 160 can also lubricate the first bearing 120 through the center hole 161 at this time.

[0087] Therefore, when the gearbox 1 is in any gear, the first bearing 120 and the second bearing 140 can be lubricated by lubricating oil, which can reduce the wear of the first bearing 120 and the second bearing 140 and extend their service life.

[0088] The vehicle according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0089] The vehicle according to an embodiment of the present invention includes a gearbox 1 according to the above embodiment of the present invention.

[0090] According to the vehicle of the present invention, by utilizing the gearbox 1 of the above embodiment of the present invention, the gearbox 1 can selectively block the first oil injection hole 221 or the second oil injection hole 222 in different gears, that is, the oil injection amount of the first oil injection hole 221 and the second oil injection hole 222 is variable, so as to adjust the oil injection amount of lubricating oil to different bearings in different gears, and the lubrication effect is better.

[0091] The gearbox 1 and other components and operations of the vehicle according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0092] In the description of this specification, references to terms such as "specific embodiment" and "specific example" refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0093] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A gearbox (1), characterized in that include: Input axis (100); A first output gear (110) and a second output gear (130), wherein the first output gear (110) is sleeved on the input shaft (100) via a first bearing (120), and the second output gear (130) is sleeved on the input shaft (100) via a second bearing (140), and the first output gear (110) and the second output gear (130) are arranged along the axial direction of the input shaft (100); A shifting mechanism (200) includes a shifting assembly (210) and a shifting shaft (220). The shifting assembly (210) is movably disposed on the shifting shaft (220). The shifting shaft (220) is provided with a first oil injection hole (221) and a second oil injection hole (222). The first oil injection hole (221) is used to inject oil into the first bearing (120), and the second oil injection hole (222) is used to inject oil into the second bearing (140). The gearbox (1) has a switchable low-speed state and a high-speed state; When the gearbox (1) is in the low speed state, the shift assembly (210) meshes with the first output gear (110) and the input shaft (100) and disconnects from the second output gear (130). The shift assembly (210) blocks the first fuel injection hole (221) and opens the second fuel injection hole (222). When the gearbox (1) is in the high-speed state, the shift assembly (210) is disconnected from the first output gear (110) and engaged with the second output gear (130) and the input shaft (100). The shift assembly (210) opens the first fuel injection hole (221) and blocks the second fuel injection hole (222).

2. The gearbox (1) according to claim 1, characterized in that The shift assembly (210) includes: A shift fork (211) is movably sleeved on the shift shaft (220) along the axial direction of the shift shaft (220), and the shift fork (211) can selectively block the first fuel injection hole (221) and the second fuel injection hole (222). A shift engagement sleeve (212) is connected to the shift fork (211). The shift engagement sleeve (212) meshes with the input shaft (100) for transmission, and the shift engagement sleeve (212) can selectively mesh with the first output gear (110) and the second output gear (130) for transmission.

3. The gearbox (1) according to claim 2, characterized in that The input shaft (100) is provided with a shift hub (150), and the first output gear (110) includes a first engagement tooth (111) and a first output tooth (112) arranged axially. The first engagement tooth (111) is adjacent to the shift hub (150), and the shift engagement sleeve (212) selectively meshes with the first engagement tooth (111); and, The second output gear (130) includes a second engagement tooth (131) and a second output tooth (132) arranged axially, the second engagement tooth (131) being adjacent to the shift hub (150), and the shift engagement sleeve (212) selectively engaging with the second engagement tooth (131).

4. The gearbox (1) according to claim 1, characterized in that Also includes: The first fuel injector (310) has one end connected to the shift shaft (220) and communicates with the first fuel injection hole (221); The second fuel injector (320) has one end connected to the shift shaft (220) and communicates with the second fuel injection hole (222); The first output gear (110) is provided with a first through hole (113), and the other end of the first fuel injector (310) is connected to the first bearing (120) through the first through hole (113). The second output gear (130) is provided with a second through hole (133), and the other end of the second fuel injector (320) is connected to the second bearing (140) through the second through hole (133).

5. The gearbox (1) according to claim 4, characterized in that The first fuel injector (310) is provided with a first notch (311), and one side of the shift assembly (210) can selectively extend into the first notch (311) to selectively block the first fuel injection hole (221); and / or, The second fuel injector (320) is provided with a second notch (321), and the other side of the shift assembly (210) can be selectively inserted into the second notch (321) to selectively block the second fuel injection hole (222).

6. The gearbox (1) according to claim 1, characterized in that The shift shaft (220) has the following structure: An oil reservoir (223) extends radially through the upper side of the shift shaft (220), and the bottom wall of the oil reservoir (223) communicates with the first injection hole (221) and the second injection hole (222). The first axial oil passage (224) extends along the axial direction of the shift shaft (220) and is connected to the oil reservoir (223).

7. The gearbox (1) according to claim 6, characterized in that Also includes: The housing (400) has an oil storage tank (410) on its inner wall. The bottom of the oil storage tank (410) has a plurality of oil guide holes (411) located above the oil storage tank (223). The housing (400) is also provided with an oil guide rib (420), which protrudes from the inner wall of the housing (400) and is used to guide the lubricating oil to the oil storage tank (223).

8. The gearbox (1) according to claim 7, characterized in that Also includes: Multiple filter components are disposed in the oil storage tank (410) and located at the oil guide hole (411), with each filter component corresponding to one of the multiple oil guide holes (411).

9. The gearbox (1) according to any one of claims 1-8, characterized in that, The input shaft (100) is provided with a second axial oil passage (160) and a plurality of center holes (161). The second axial oil passage (160) extends along the axial direction of the input shaft (100), and the center holes (161) extend along the radial direction of the input shaft (100). The second axial oil passage (160) communicates with the first bearing (120) and the second bearing (140) through the plurality of center holes (161).

10. A vehicle characterized by comprising: Includes the gearbox (1) according to any one of claims 1-9.

Images