Speed reducer input shaft, speed reducer and vehicle

Abstract

The utility model discloses a speed reducer input shaft, a speed reducer and a vehicle, the speed reducer input shaft comprises a polished shaft and an oil guide pipe, the polished shaft is provided with at least two sets of oil outlet parts, and outlets of the oil outlet parts face an input gear set and / or an output gear set; the two ends of the oil guide pipe are connected into the polished shaft, at least two oil storage cavities are defined between the middle of the oil guide pipe and the interior of the polished shaft, the oil guide pipe is provided with an oil inlet channel, and the oil storage cavities communicate with the oil inlet channel and the corresponding oil outlet parts. According to the speed reducer input shaft, the oil guide pipe moves along with the optical axis, the oil guide pipe can utilize centrifugal force generated by high-speed rotation of the optical axis, lubricating oil can be thrown out from the oil inlet channel, the corresponding oil storage cavity and at least one set of corresponding oil outlet parts in sequence, and active lubricating, cooling and the like of an input gear set and / or an output gear set are achieved; therefore, active lubrication, cooling and the like of the gear in the speed reducer are achieved, and risks of gear abrasion and the like in the speed reducer are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a reducer input shaft, a reducer and a vehicle. BACKGROUND

[0002] The rotor assembly in the oil-cooled motor generates heat when operating, and therefore needs to be cooled by cooling oil. The motor shaft of the oil-cooled motor is generally connected in transmission with the input shaft through external splines and internal splines, and the input shaft is internally arranged with an oil guide pipe, which plays a role of guiding oil, so that the cooling oil can be better transported from the oil channel to the splines and the inside of the oil-cooled motor, realizing lubrication and cooling of the splines, the rotor and the iron core.

[0003] However, the above-mentioned oil guide pipe cannot lubricate and cool the input gear set and / or the output gear set. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a reducer input shaft, a reducer and a vehicle to solve the technical problem that the existing oil guide pipe cannot lubricate and cool the input gear set and / or the output gear set.

[0005] To solve the above technical problem, the present application provides a reducer input shaft, which comprises: an optical shaft provided with at least two oil outlet portions, the outlets of the oil outlet portions being directed towards the input gear set and / or the output gear set; and an oil guide pipe, both ends of which are connected to the inside of the optical shaft, at least two oil storage cavities being formed between the middle of the oil guide pipe and the inside of the optical shaft, the oil guide pipe being provided with an oil inlet channel, and the oil storage cavities being respectively communicated with the oil inlet channel and at least one corresponding oil outlet portion.

[0006] Among them, the oil guide pipe comprises an oil guide pipe body and first and second end portions arranged at both ends of the oil guide pipe body, the oil guide pipe body is provided with an oil inlet channel, the first and second end portions are connected to the inside of the optical shaft, and at least two oil guide separation portions are circumferentially distributed on the outer periphery of the oil guide pipe body, and an oil storage groove is formed between adjacent oil guide separation portions, the first and second end portions.

[0007] Among them, four oil guide separation portions are circumferentially distributed on the outer surface of the oil guide pipe body, and the central angles between adjacent oil guide separation portions are equal.

[0008] Among them, the end face of the oil guide separation portion away from the oil guide pipe body is provided with a first sealing groove, the reducer input shaft comprises a first sealing member, and the first sealing member is partially embedded in the first sealing groove; and / or, the outer peripheral surface of the first end portion and the second end portion is annularly provided with a second sealing groove, the reducer input shaft comprises a second sealing member, and the second sealing member is partially embedded in the second sealing groove.

[0009] Among them, the oil guide pipe comprises at least two extension pipes, the extension pipes are arranged on the outer periphery of the oil guide pipe body and located in the oil storage cavities, one end of the extension pipes is communicated with the oil storage cavities, and the other end is communicated with the oil inlet channel.

[0010] The extension pipe is arranged radially and is spaced apart from the inner side wall of the optical shaft.

[0011] The oil outlet part comprises at least one first oil outlet, and the first oil outlet is arranged obliquely and faces the input gear set; and / or the oil outlet part comprises at least one second oil outlet, and the second oil outlet faces the output gear set.

[0012] One of the end of the oil guide pipe body and the end of the input shaft of the speed reducer is provided with a positioning part, and the other is provided with a positioning groove, and the positioning part is limited in the positioning groove.

[0013] The application provides a speed reducer, which comprises the input shaft of the speed reducer.

[0014] The application provides a vehicle, which comprises the speed reducer.

[0015] The application provides a speed reducer input shaft. The speed reducer input shaft comprises an optical shaft and an oil guide pipe. The optical shaft is provided with at least two groups of oil outlet parts. The outlets of the oil outlet parts face the input gear set and / or the output gear set. The oil guide pipe is connected to the inside of the optical shaft at both ends. At least two oil storage cavities are formed between the middle of the oil guide pipe and the inside of the optical shaft. The oil guide pipe is provided with an oil inlet channel. The oil storage cavities are respectively communicated with the oil inlet channel and the corresponding at least one group of oil outlet parts.

[0016] Through the cooperation of the optical shaft, the at least two groups of oil outlet parts, the oil guide pipe, the oil storage cavities and the oil inlet channel, the oil guide pipe moves with the optical shaft, the oil guide pipe can use the centrifugal force generated by the high-speed rotation of the optical shaft to throw out the lubricating oil from the oil inlet channel, the corresponding oil storage cavity and the corresponding at least one group of oil outlet parts in turn, and the input gear set and / or the output gear set is actively lubricated and cooled, and the like, thereby actively lubricating and cooling the gears in the speed reducer, and reducing the risk of gear wear in the speed reducer. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0018] Figure 1 is a partial structure schematic diagram of an embodiment of the speed reducer of the application;

[0019] Figure 2 is an exploded schematic diagram of an embodiment of the input shaft of the speed reducer of the application;

[0020] Figure 3 is a first cross-sectional view of an embodiment of the input shaft of the reduction gear of the present application;

[0021] Figure 4 is a structural view of the oil guide tube in the input shaft of the reduction gear of the present application;

[0022] Figure 5 is a second cross-sectional view of an embodiment of the input shaft of the reduction gear of the present application;

[0023] Figure 6 is a side view of the oil guide tube in the input shaft of the reduction gear of the present application;

[0024] Figure 7 is a cross-sectional view of the oil guide tube in the input shaft of the reduction gear of the present application;

[0025] Figure 8 is Figure 6 is an enlarged view of A shown in

[0026] Figure 9 is a partial cross-sectional view of an embodiment of the reduction gear of the present application;

[0027] Figure 10 is an enlarged view of B shown in Figure 9

[0028] Reference signs: 10, input shaft of the reduction gear; 11, optical axis; 111, oil outlet; 1111, first oil outlet; 1112, second oil outlet; 1113, positioning groove; 12, oil guide tube; 121, oil guide tube body; 1211, oil inlet channel; 1212, oil guide hole; 1213, positioning portion; 122, first end portion; 123, second end portion; 1231, second sealing groove; 124, oil guide separation portion; 1241, first sealing groove; 125, oil storage groove; 126, extension tube; 13, oil storage cavity; 14, first sealing member; 15, second sealing member; 20, reduction gear; 21, input gear set; 211, input shaft gear; 212, intermediate shaft large gear; 22, output gear set; 221, intermediate shaft small gear; 222, differential large gear; 23, intermediate shaft; 24, output shaft. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0030] ​Reference to "an embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all referring to a particular embodiment logically divided into parts. It is explicitly contemplated that embodiments described herein can be combined to include claims directed to combinations of the embodiments.

[0031] The reducer input shaft, the reducer and the vehicle provided by the utility model are described in detail below in combination with the embodiments.

[0032] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 is a partial structure schematic view of an embodiment of the reducer of the application; Figure 2 is an exploded schematic view of an embodiment of the reducer input shaft of the application; Figure 3 is a first cross-sectional schematic view of an embodiment of the reducer input shaft of the application. The application provides a reducer input shaft 10. The reducer input shaft 10 comprises an optical shaft 11 and an oil guide pipe 12. The optical shaft 11 is provided with at least two groups of oil outlets 111. The outlets of the oil outlets 111 are directed towards an input gear set 21 and / or an output gear set 22. The two ends of the oil guide pipe 12 are connected to the inside of the optical shaft 11. At least two oil storage cavities 13 are formed between the middle of the oil guide pipe 12 and the inside of the optical shaft 11. The oil guide pipe 12 is provided with an oil inlet passage 1211. The oil storage cavities 13 are respectively communicated with the oil inlet passage 1211 and the corresponding at least one group of oil outlets 111.

[0033] The optical shaft 11 can be but is not limited to a hollow column. The optical shaft 11 can be connected with a motor shaft (not shown in the figure). The optical shaft 11 provides a mounting position for the oil guide pipe 12. The optical shaft 11 can be provided with two groups, three groups, four groups and more than five groups of oil outlets 111. The oil outlets 111 are used for throwing out lubricating oil and the like. The lubricating oil can be but is not limited to cooling oil, which can play a lubricating and cooling role, which is not limited here. Each group of oil outlets 111 can be but is not limited to one, two and more than three oil outlets and the like. In this embodiment, the optical shaft 11 is provided with four groups of oil outlets 111, and each group of oil outlets 111 comprises two oil outlets.

[0034] The outlets of the oil outlets 111 are directed towards the input gear set 21 and / or the output gear set 22, that is, the lubricating oil can be thrown out from the outlets of the oil outlets 111 and lubricate and cool the above-mentioned input gear set 21, or the output gear set 22, or the input gear set 21 and the output gear set 22 and the like. The input gear set 21 can be but is not limited to an input shaft gear 211 and / or an intermediate shaft large gear 212 and the like. The output gear set 22 can be but is not limited to an intermediate shaft small gear 221 and / or a differential large gear 222 and the like.

[0035] The oil guide pipe 12 can be but is not limited to a hollow column. The oil guide pipe 12 is detachably or fixedly connected to the inside of the optical shaft 11. In the present embodiment, the oil guide pipe 12 is interference-fitted to the inside of the optical shaft 11. The oil guide pipe 12 moves with the optical shaft 11. When the optical shaft 11 rotates at high speed, the oil guide pipe 12 rotates at high speed with the optical shaft 11.

[0036] When the oil guide pipe 12 is connected to the inside of the optical shaft 11, at least two oil storage cavities 13 are formed between the middle part of the oil guide pipe 12 and the inside of the optical shaft 11. The number of the oil storage cavities 13 can be but is not limited to two, three, four, five or more. In the present embodiment, the number of the oil storage cavities 13 is four. The oil storage cavities 13 can contain a certain amount of lubricating oil.

[0037] The oil storage cavities 13 can be arranged in various ways. For example, at least two oil guide partition portions 124 are arranged on the outer periphery of the middle part of the oil guide pipe 12. The oil guide pipe 12 forms the at least two oil storage cavities 13 by being surrounded by the at least two oil guide partition portions 124 and the inside of the optical shaft 11. Alternatively, at least two optical shaft partition portions (not shown in the figure) are arranged on the inside of the optical shaft 11. The optical shaft 11 forms the at least two oil storage cavities 13 by being surrounded by the at least two optical shaft partition portions and the outer periphery of the middle part of the oil guide pipe 12. Alternatively, at least two oil guide partition portions 124 are arranged on the outer periphery of the middle part of the oil guide pipe 12, and at least two optical shaft partition portions are arranged on the inside of the optical shaft 11. The oil guide partition portions 124 and the corresponding optical shaft partition portions are spliced to form partition portions (not shown in the figure), that is, the oil guide pipe 12 and the optical shaft 11 jointly form the at least two oil storage cavities 13 by being surrounded by the at least two oil guide partition portions 124 and the at least two optical shaft partition portions.

[0038] The center of the oil guide pipe 12 can be provided with an oil inlet passage 1211. The oil inlet passage 1211 is used for the circulation of lubricating oil. The oil inlet passage 1211 can be but is not limited to a strip-shaped arrangement. One end of the oil inlet passage 1211 is used for the inflow of lubricating oil, and the other end is used for the outflow of lubricating oil.

[0039] The at least two oil storage cavities 13 are in communication with the oil inlet passage 1211, that is, the lubricating oil in the oil inlet passage 1211 can enter the at least two oil storage cavities 13. Each oil storage cavity 13 is in communication with at least one set of oil outlet portions 111, that is, the lubricating oil in each oil storage cavity 13 can be thrown out by the at least one set of oil outlet portions 111 to lubricate and cool the input gear set 21 and / or the output gear set 22, etc. When the number of the oil storage cavities 13 is at least two and the number of the oil outlet portions 111 is at least two, each oil storage cavity 13 is in communication with the oil inlet passage 1211 and the corresponding at least one set of oil outlet portions 111, so that the lubricating oil in the oil inlet passage 1211 can enter different oil storage cavities 13 and be thrown out by multiple at least one set of oil outlet portions 111 from different oil storage cavities 13 to lubricate the input gear set 21 and / or the output gear set 22, etc.

[0040] Through the cooperation of the optical axis 11, the at least two groups of oil outlet portions 111, the oil guide pipe 12, the oil storage cavity 13, and the oil inlet passage 1211, the oil guide pipe 12 moves with the optical axis 11, the oil guide pipe 12 can use the centrifugal force generated by the high-speed rotation of the optical axis 11, and the lubricating oil is thrown out from the oil inlet passage 1211, the corresponding oil storage cavity 13, and the corresponding at least one group of oil outlet portions 111 in turn, thereby achieving active lubrication and cooling of the input gear set 21 and / or the output gear set 22, and further achieving active lubrication and cooling of the gears in the speed reducer 20, thereby reducing the risk of gear wear in the speed reducer 20.

[0041] Please refer to Figure 4 and Figure 5 , Figure 4 is a structural schematic diagram of an oil guide pipe in an input shaft of a speed reducer of the present application; Figure 5 is a second cross-sectional schematic diagram of an embodiment of the input shaft of the speed reducer of the present application. In combination with Figures 1 to 3 In some embodiments, the oil guide pipe 12 includes an oil guide pipe body 121 and a first end portion 122 and a second end portion 123 arranged at both ends of the oil guide pipe body 121. The oil guide pipe body 121 is provided with an oil inlet passage 1211. The first end portion 122 and the second end portion 123 are connected to the inside of the optical axis 11. The outer periphery of the oil guide pipe body 121 is circumferentially distributed with at least two oil guide separation portions 124. The adjacent oil guide separation portions 124, the first end portion 122, and the second end portion 123 are surrounded to form an oil storage groove 125.

[0042] The oil guide pipe body 121 can be but is not limited to a hollow column. The first end portion 122 can be arranged at the left end of the oil guide pipe body 121. The first end portion 122 can be detachably or fixedly connected to the left end of the oil guide pipe body 121. In this embodiment, the first end portion 122 is integrally formed at the left end of the oil guide pipe body 121. The second end portion 123 can be arranged at the right end of the oil guide pipe body 121. The second end portion 123 can be detachably or fixedly connected to the right end of the oil guide pipe body 121. In this embodiment, the second end portion 123 is integrally formed at the right end of the oil guide pipe body 121.

[0043] The first end portion 122 and the second end portion 123 can be interference-fitted or clamped into the inside of the optical axis 11. The first end portion 122 and the second end portion 123 can be but are not limited to connected to the inside of the optical axis 11 by a sealing member.

[0044] The middle of the oil guide pipe body 121 can be provided with the oil inlet passage 1211. The cross sections of the first end portion 122, the second end portion 123, and the oil guide pipe body 121 can be the same, all being circular. The diameters of the first end portion 122 and the second end portion 123 are larger than the diameter of the oil guide pipe body 121, so that the middle outer periphery of the oil guide pipe body 121 and the inside of the optical axis 11 form the above-mentioned oil storage cavity 13.

[0045] The oil guide partition 124 can be but is not limited to a plate shape and a block shape, etc. When the oil guide partition 124 is in the form of a block, the cross-sectional shape thereof can be but is not limited to an isosceles trapezoid or a quadrilateral, etc. The number of the oil guide partitions 124 can be two, three, four, five or more, etc. In the present embodiment, the number of the oil guide partitions 124 is four.

[0046] When the number of the oil guide partitions 124 is at least two, at least two oil storage grooves 125 are formed between the at least two oil guide partitions 124, the first end portion 122 and the second end portion 123. The number of the oil guide partitions 124 can be the same as the number of the oil storage grooves 125. The oil inlet passage 1211 is in communication with the at least two oil storage grooves 125, i.e. the lubricating oil in the oil inlet passage 1211 can flow into the at least two oil storage grooves 125.

[0047] Through the cooperation of the oil guide pipe body 121, the first end portion 122, the second end portion 123 and the at least two oil guide partitions 124, not only at least two oil storage cavities 13 can be formed to realize the active lubrication of the gears in the speed reducer 20, but also the structure is simple and easy to install and operate, etc.

[0048] The extension direction of the oil guide partition 124 is the same as the extension direction of the oil guide pipe body 121.

[0049] In some embodiments, four oil guide partitions 124 are circumferentially distributed on the outer surface of the oil guide pipe body 121. The central angles between adjacent oil guide partitions 124 are equal.

[0050] The four oil guide partitions 124 divide the outer periphery of the oil guide pipe body 121 into four parts, and under the action of the first end portion 122 and the second end portion 123, the four oil storage grooves 125 can be formed. Since the central angles between adjacent oil guide partitions 124 are equal, the shapes and sizes of the four oil storage grooves 125 are the same.

[0051] In actual processes, the central angles between adjacent oil guide partitions 124 can not be equal. Alternatively, the central angles between some adjacent oil guide partitions 124 are the same, and the central angles between some adjacent oil guide partitions 124 are not the same.

[0052] By limiting the number and central angles of the oil guide partitions 124, the uniformity of the lubricating oil entering the oil storage cavities 13 is improved, and the uniformity of the lubricating oil being thrown by the oil outlet portion 111 to the input gear set 21 and / or the output gear set 22 is improved.

[0053] Specifically, the cross-sectional shape of the oil storage groove 125 can be but is not limited to a sector shape and a triangular shape, etc.

[0054] Please refer to Figure 6 , Figure 7 and Figure 8 , Figure 6is a side view of the oil guide pipe in the input shaft of the reduction gear of the application; Figure 7 is a cross-sectional view of the oil guide pipe in the input shaft of the reduction gear of the application; Figure 8 is Figure 6 is an enlarged schematic view of A shown in Figures 1 to 5 In some embodiments, the oil guide partition 124 is provided with a first sealing groove 1241 at one end surface of the oil guide pipe body 121. The reduction gear input shaft 10 comprises a first sealing member 14. The first sealing member 14 is partially embedded in the first sealing groove 1241. And / or, the outer circumferential surface of the first end portion 122 and the second end portion 123 are both provided with a second sealing groove 1231. The reduction gear input shaft 10 comprises a second sealing member 15. The second sealing member 15 is partially embedded in the second sealing groove 1231.

[0055] The first sealing groove 1241 can be but is not limited to a recessed shape. The extension direction of the first sealing groove 1241 can be the same as the extension direction of the oil guide partition 124, i.e. the extension direction of the first sealing groove 1241 can be the same as the axial extension direction of the oil guide pipe body 121. The first sealing groove 1241 provides a mounting position for the first sealing member 14. The cross-sectional shape of the first sealing groove 1241 can be the same as or different from the cross-sectional shape of the first sealing member 14, as long as the first sealing member 14 can be partially embedded in the first sealing groove 1241.

[0056] And / or, the second sealing groove 1231 can be but is not limited to a recessed shape. The second sealing groove 1231 is annularly arranged around the outer circumferences of the first end portion 122 and the second end portion 123. The second sealing groove 1231 provides a mounting position for the second sealing member 15. The cross-sectional shape of the second sealing groove 1231 can be the same as or different from the cross-sectional shape of the second sealing member 15, as long as the second sealing member 15 can be partially embedded in the second sealing groove 1231.

[0057] When the oil guide partition 124 is provided with the first sealing groove 1241, and the outer circumferences of the first end portion 122 and the second end portion 123 are both provided with the second sealing groove 1231, the first sealing groove 1241 and the second sealing groove 1231 can be in communication. At this time, the first sealing member 14 and the second sealing member 15 can be an integral structure; or, the first sealing member 14 and the second sealing member 15 can also be a split structure, which is not limited herein. The above-mentioned first sealing member 14 and the second sealing member 15 can be a sealing ring or a sealing strip, etc.

[0058] The first sealing groove 1241 of the oil guide partition 124 and the first sealing member 14 cooperate to improve the sealing performance of the oil guide tube 121 installed inside the optical axis 11, the sealing performance between the adjacent oil storage cavities 13, and the stability of the first sealing member 14.

[0059] In some embodiments, the oil guide tube 12 includes at least two extension tubes 126. The extension tubes 126 are arranged on the outer periphery of the oil guide tube 121 and located in the oil storage cavities 13. One end of the extension tubes 126 communicates with the oil storage cavities 13, and the other end communicates with the oil inlet channel 1211.

[0060] The extension tubes 126 can be, but are not limited to, hollow tubes. The number of extension tubes 126 can be, but is not limited to, two, three, four, five or more. In this embodiment, the number of extension tubes 126 is four. The shape of the extension tubes 126 can be, but is not limited to, straight or curved. The extension tubes 126 can be detachably or fixedly connected to the outer periphery of the oil guide tube 121. In this embodiment, the extension tubes 126 are integrally formed on the outer periphery of the oil guide tube 121.

[0061] The extension tubes 126 are located in the corresponding oil storage cavities 13. Each oil storage cavity 13 can have at least one extension tube 126. In this embodiment, the number of oil storage cavities 13 is four, and the number of extension tubes 126 is four, wherein each oil storage cavity 13 can have one extension tube 126.

[0062] One end of the extension tube 126 communicates with the oil storage cavity 13, that is, the end of the extension tube 126 away from the outer periphery of the oil guide tube 121 has a certain height difference with the outer periphery of the oil guide tube 121. The other end of the extension tube 126 communicates with the oil inlet channel 1211. The lubricating oil in the oil inlet channel 1211 can enter the oil storage cavity 13 through the extension tube 126. When the lubricating oil in the oil inlet channel 1211 enters the extension tube 126 and the oil storage cavity 13, because the extension tube 126 has a certain height, even if the oil pump of the speed reducer 20 does not work, that is, the input shaft 10 of the speed reducer is in a stationary state, at least one oil storage cavity 13 can store a certain amount of lubricating oil.

[0063] By the cooperation of the extension pipe 126 and the oil storage cavity 13, it can be ensured that the lubricating oil is stored in at least one of the oil storage cavities 13. When the speed reducer 20 is just started, the lubricating oil stored in the oil storage cavity 13 can be quickly thrown out before the oil pump pumps the oil into the oil guide pipe 12, so as to realize the lubrication of the input gear set 21 and / or the output gear set 22, thereby reducing the risk of gear wear in the input gear set 21 and / or the output gear set 22, etc.

[0064] Specifically, the oil guide pipe body 121 is provided with at least two oil guide holes 1212. Among them, the oil guide hole 1212 can play a connecting role. The number of oil guide holes 1212 can be two, three, four or more. The extension pipe 126 is in communication with the oil inlet channel 1211 through the oil guide hole 1212. Among them, the number of extension pipes 126 can correspond to the number of oil guide holes 1212, which is not limited here. As in the embodiment, the number of extension pipes 126 and oil guide holes 1212 is four.

[0065] In some embodiments, the extension pipe 126 is spaced apart between the inner side wall of the optical axis 11. And / or, the extension pipe 126 is radially extended and arranged.

[0066] Among them, as Figure 5 The spacing is that one end of the extension pipe 126 away from the end of the oil guide pipe body 121 and the inner side wall of the optical axis 11 has a certain interval H. This interval H not only makes the lubricating oil enter the oil storage cavity 13 through the extension pipe 126, but also reduces the risk of lubricating oil flowing out of the oil storage cavity 13 through the extension pipe 126, thereby ensuring that the lubricating oil is stored in at least one of the oil storage cavities 13, etc.

[0067] Radially is that the oil guide pipe body 121 is arranged in a radial direction outward from the center. When the extension pipe 126 is multiple, the multiple extension pipes 126 are circumferentially distributed on the outer periphery of the oil guide pipe body 121. Among them, the extension pipe 126 has a certain height along the radial direction. By limiting the extension direction of the extension pipe 126, not only the smoothness of the lubricating oil entering the oil storage cavity 13 is improved, but also the processing and installation are facilitated, etc.

[0068] When the number of oil guide separation parts 124 and the number of oil storage cavities 13 are both four, the number of extension pipes 126 is also four, and the central angle between adjacent oil guide separation parts 124 is 60 degrees at this time. Through the above limitation, when the speed reducer input shaft 10 rotates at high speed, no matter what angle it stops at, there is always one oil storage cavity 13 storing lubricating oil. When the speed reducer 20 is just started, the lubricating oil stored in the oil storage cavity 13 can be quickly thrown out before the oil pump pumps the oil into the oil guide pipe 12, so as to realize the lubrication and cooling of the gear, etc.

[0069] The central angle between the adjacent oil guiding separation portions 124 can be less than or equal to 60 degrees. Specifically, the central angle between the adjacent oil guiding separation portions 124 can be, but is not limited to, 25 degrees, 30 degrees, 40 degrees, 50 degrees, 60 degrees, etc. The central angle between the adjacent oil guiding separation portions 124 is defined as a. In this embodiment, a is 60 degrees. The central angle between the adjacent oil guiding separation portions 124 can be related to the number of the oil guiding separation portions 124, the size and thickness of the oil guiding separation portions 124, the size of the oil guiding holes 1212, etc. The central angle between the adjacent oil guiding separation portions 124 is greater than or equal to the angle of the oil guiding holes 1212 on the outer circumferential surface of the oil guiding pipe body 121.

[0070] In some embodiments, the oil guiding pipe body 121, the first end portion 122, the second end portion 123, the oil guiding separation portions 124, and the extension pipe 126 are integrally formed. Alternatively, the oil guiding pipe body 121, the first end portion 122, the second end portion 123, the oil guiding separation portions 124, and the extension pipe 126 are welded with each other.

[0071] Please refer to Figure 9 and Figure 10 , Figure 9 is a partial cross-sectional schematic view of an embodiment of the speed reducer of the present application; Figure 10 is Figure 9 is an enlarged schematic view of B shown in Figures 1 to 8 In some embodiments, the oil outlet portion 111 includes at least one first oil outlet 1111. The first oil outlet 1111 is obliquely arranged and faces the input gear set 21. In addition, the oil outlet portion 111 includes at least one second oil outlet 1112. The second oil outlet 1112 faces the output gear set 22.

[0072] In this embodiment, the lubricating oil in the oil storage cavity 13 is thrown to the input gear set 21 through the outlet of the first oil outlet 1111, so that the input gear set 21 can be actively lubricated. Each group of oil outlet portions 111 includes at least one first oil outlet 1111. The number of the first oil outlet 1111 of each group of oil outlet portions 111 can be one, two, three or more. In this embodiment, the number of the first oil outlet 1111 of each group of oil outlet portions 111 is one.

[0073] The first oil outlet 1111 is obliquely arranged relative to the thickness direction of the side wall of the oil guiding pipe body 121. When the number of the first oil outlet 1111 of each group of oil outlet portions 111 is multiple, the oblique directions of the multiple first oil outlets 1111 relative to the thickness direction of the side wall of the oil guiding pipe body 121 can be the same or different; or, at least part of the oblique directions of the first oil outlets 1111 relative to the thickness direction of the side wall of the oil guiding pipe body 121 are the same, and at least part of the oblique directions of the first oil outlets 1111 relative to the thickness direction of the side wall of the oil guiding pipe body 121 are different, etc., which are not limited herein.

[0074] The lubricating oil in the oil storage cavity 13 is thrown to the output gear set 22 through the outlet of the second oil outlet 1112, and the output gear set 22 can be actively lubricated. Each group of oil outlet portions 111 includes at least one second oil outlet 1112. The number of second oil outlets 1112 of each group of oil outlet portions 111 can be one, two, three or more. In the embodiment, the number of second oil outlets 1112 of each group of oil outlet portions 111 is one.

[0075] The second oil outlet 1112 can have various angles relative to the thickness direction of the side wall of the oil guide pipe body 121. When the number of second oil outlets 1112 of each group of oil outlet portions 111 is multiple, the multiple second oil outlets 1112 are arranged obliquely relative to the thickness direction of the side wall of the oil guide pipe body 121, or the second oil outlet 1112 is arranged horizontally relative to the thickness direction of the side wall of the oil guide pipe body 121, etc., which are not limited herein. The outlet arrangement direction of the second oil outlet 1112 can be related to the position and size of the output gear set 22, and can be determined according to actual conditions, which is not limited herein.

[0076] By including at least one first oil outlet 1111 in the oil outlet portion 111, the input gear set 21 can be actively lubricated. And / or, by including at least one second oil outlet 1112 in the oil outlet portion 111, the output gear set 22 can be actively lubricated.

[0077] In some embodiments, as shown in Figure 2 One of the end of the oil guide pipe body 121 and the end of the reducer input shaft 10 is provided with a positioning portion 1213. One of the end of the oil guide pipe body 121 and the end of the reducer input shaft 10 is provided with a positioning groove 1113. The positioning portion 1213 is limited in the positioning groove 1113.

[0078] The positioning portion 1213 and the positioning groove 1113 can cooperate with each other to play a positioning role. The number of positioning portions 1213 and positioning grooves 1113 can be one, two, three or more, but is not limited to this. In the embodiment, the number of positioning portions 1213 and positioning grooves 1113 is one. The shapes of the positioning portion 1213 and the positioning groove 1113 cooperate with each other, for example, the positioning portion 1213 can be a square protrusion (not marked on the figure), and the positioning groove 1113 can be a square groove (not marked on the figure).

[0079] The positioning portion 1213 and the positioning groove 1113 can be arranged in various positions. In the embodiment, the positioning portion 1213 is arranged on the outer periphery of the end of the oil guide pipe body 121. The positioning portion 1213 can be detachably or fixedly connected to the outer periphery of the end of the oil guide pipe body 121. The positioning groove 1113 is arranged in the end of the reducer input shaft 10. The positioning portion 1213 of the oil guide pipe body 121 and the positioning groove 1113 of the end of the reducer input shaft 10 cooperate with each other.

[0080] In another specific embodiment, the positioning groove 1113 is arranged on the outer periphery of the oil guide pipe body 121. The positioning part 1213 is arranged in the end of the input shaft 10 of the speed reducer. The positioning part 1213 can be detachably or fixedly connected to the end of the input shaft 10 of the speed reducer. The positioning groove 1113 on the outer periphery of the end of the oil guide pipe body 121 and the positioning part 1213 on the end of the input shaft 10 of the speed reducer are matched with each other.

[0081] The positioning groove 1113 on the outer periphery of the end of the oil guide pipe body 121 and the positioning part 1213 on the end of the input shaft 10 of the speed reducer are matched with each other.

[0082] The oil guide pipe 12 is connected to the optical shaft 11 by interference sealing of the first sealing member 14 and / or the second sealing member 15. The positioning part 1213 and the positioning groove 1113 are matched with each other between the oil guide pipe 12 and the input shaft 10 of the speed reducer, which further enhances the stability of the installation of the oil guide pipe 12 in the optical shaft 11, so that the oil guide pipe 12 moves synchronously with the optical shaft 11, etc.

[0083] Please refer to Figures 1 to 10 The application provides a speed reducer 20. The speed reducer 20 comprises the above-mentioned input shaft 10 of the speed reducer. It should be noted that the input shaft 10 of the speed reducer in the embodiment is the input shaft 10 of the speed reducer described in the above-mentioned embodiment, which will not be described here.

[0084] The oil guide pipe 12 moves with the optical shaft 11 by using the above-mentioned input shaft 10 of the speed reducer. The oil guide pipe 12 can use the centrifugal force generated by the high-speed rotation of the optical shaft 11 to make the lubricating oil be thrown out from the oil inlet channel 1211, the corresponding oil storage cavity 13 and the corresponding at least one oil outlet part 111 in turn, so as to realize the active lubrication and cooling of the input gear set 21 and / or the output gear set 22, and further realize the active lubrication and cooling of the gears in the speed reducer 20, thereby reducing the risk of gear wear in the speed reducer 20.

[0085] In some embodiments, the speed reducer 20 comprises an intermediate shaft 23, an output shaft 24, an input gear set 21 and an output gear set 22. The input gear set 21 comprises an input shaft gear 211 and an intermediate shaft gear 212. The output gear set 22 comprises an intermediate shaft pinion 221 and a differential gear 222, etc. The input shaft gear 211 is arranged around the outer periphery of the optical shaft 11. The intermediate shaft gear 212 and the intermediate shaft pinion 221 are arranged around the outer periphery of the intermediate shaft 23. The differential gear 222 is arranged around the outer periphery of the output shaft 24. The input shaft gear 211 is engaged with the intermediate shaft gear 212. The intermediate shaft pinion 221 is engaged with the differential gear 222.

[0086] Please refer to Figures 1 to 10The application provides a vehicle. The vehicle (not shown in the figure) comprises the above-mentioned speed reducer 20. It should be noted that the speed reducer 20 in the embodiment is the speed reducer 20 described in the above-mentioned embodiment, which will not be described here.

[0087] The vehicle can realize active lubrication and cooling of the input gear set 21 and / or the output gear set 22 by using the above-mentioned speed reducer 20, and thus realizes active lubrication and cooling of the gears in the speed reducer 20, thereby reducing the risk of gear wear in the speed reducer 20.

[0088] The terms "first", "second", "third" in the application are only for descriptive purposes, and cannot be understood as indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third" can include at least one of the features explicitly or implicitly. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not limit to the listed steps or units, but optionally includes steps or units not listed, or optionally includes other steps or units inherent to the process, method, product or device.

[0089] The above is only an embodiment of the application, and does not limit the patent scope of the application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the application.

Claims

1. A reducer input shaft characterized by, The application relates to a speed reducer input shaft. The speed reducer input shaft comprises an optical shaft provided with at least two groups of oil outlets, the outlets of the oil outlets being directed towards an input gear set and / or an output gear set; an oil guide pipe connected to the inside of the optical shaft at both ends, at least two oil storage cavities being formed between the middle of the oil guide pipe and the inside of the optical shaft, the oil guide pipe being provided with an oil inlet channel, and the oil storage cavities being respectively communicated with the oil inlet channel and the corresponding at least one group of the oil outlets. The oil guide pipe comprises an oil guide pipe body and first and second end portions arranged at both ends of the oil guide pipe body, the oil guide pipe body being provided with the oil inlet channel, the first and second end portions being connected to the inside of the optical shaft, and at least two oil guide separation portions being circumferentially distributed on the outer periphery of the oil guide pipe body, and an oil storage groove being formed between adjacent oil guide separation portions, the first end portion and the second end portion.

2. The reducer input shaft of claim 1, wherein, The outer surface of the oil guide pipe body is circumferentially distributed with four oil guide separation portions, and the central angles between adjacent oil guide separation portions are equal.

3. The reducer input shaft of claim 2, wherein, The end face of the oil guide separation portion away from the oil guide pipe body is provided with a first sealing groove, the speed reducer input shaft comprises a first sealing member, and the first sealing member is partially embedded in the first sealing groove.

4. The reducer input shaft of claim 2, wherein, The outer peripheral surface of the first end portion and the second end portion is circumferentially provided with a second sealing groove, the speed reducer input shaft comprises a second sealing member, and the second sealing member is partially embedded in the second sealing groove. The oil guide pipe comprises at least two extension pipes, the extension pipes being arranged on the outer periphery of the oil guide pipe body and located in the oil storage cavities, one end of the extension pipes being communicated with the oil storage cavities and the other end being communicated with the oil inlet channel.

5. The reducer input shaft of claim 2, wherein, The extension pipes and the inner side wall of the optical shaft are arranged at intervals.

6. The reducer input shaft of claim 5, wherein, The extension pipes are arranged in a radial direction. The oil outlet comprises at least one first oil outlet, the first oil outlet being arranged in an inclined manner and directed towards the input gear set.

7. The reducer input shaft of claim 1, wherein, The oil outlet comprises at least one second oil outlet, the second oil outlet being directed towards the output gear set. One of the end portion of the oil guide pipe body and the end portion of the speed reducer input shaft is provided with a positioning portion, and the other is provided with a positioning groove, and the positioning portion is limited in the positioning groove.

8. The reducer input shaft of claim 1, wherein, The application further relates to a speed reducer comprising the speed reducer input shaft.

9. A speed reducer characterized by, The application further relates to a speed reducer comprising the speed reducer input shaft.

10. A vehicle characterized by comprising: ​

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