CN214331422U - Lubricating oil cooling structure for motor rotor of transmission - Google Patents
Lubricating oil cooling structure for motor rotor of transmission Download PDFInfo
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- CN214331422U CN214331422U CN202120193727.1U CN202120193727U CN214331422U CN 214331422 U CN214331422 U CN 214331422U CN 202120193727 U CN202120193727 U CN 202120193727U CN 214331422 U CN214331422 U CN 214331422U
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- input shaft
- motor rotor
- lubricating oil
- transmission
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Abstract
Derailleur motor rotor lubricating oil cooling structure all joins in marriage the derailleur input shaft of dress bearing, holds the input shaft rear bearing frame casing of derailleur input shaft rear end bearing and stretch into in the derailleur input shaft and with derailleur input shaft inner wall spline fit's motor rotor axle, its characterized in that including two front ends around: the transmission input shaft in coaxial setting oil pipe, oil pipe one end is fixed with input shaft rear bearing seat casing, the other end stretches into in the motor rotor shaft, and oil pipe and the last lubricating oil outlet UNICOM of input shaft rear bearing seat casing, with the leading-in to the motor rotor shaft of lubricating oil. The utility model discloses make lubricating oil cool off electric motor rotor in leading oil pipe direct flow in electric motor rotor axle, avoid lubricating oil from static pipeline direct flow to high-speed pivoted derailleur input shaft in, reduce the leakage of the leading-in-process of lubricating oil, improve the lubricating oil flow that gets into electric motor rotor to improve electric motor rotor's cooling efficiency.
Description
Technical Field
The utility model relates to a derailleur electric motor rotor lubricating oil cooling structure belongs to derailleur cooling technology field.
Background
In the prior art, the new energy gearbox, the motor and the controller are combined into a whole, the design can well solve the problem that the space of the three parts is discrete, the parts are required to be assembled respectively, and meanwhile, the cost is wasted. The cooling of the motor of the existing three-in-one transmission project mainly depends on water cooling, a cooling medium (the main component is water) is pumped into the motor by an external water pump, the cooling efficiency of the water is limited, the latest cooling technology direction is that oil is used as the cooling medium, a large amount of lubricating oil exists in a key part transmission case in the three-in-one transmission, and the lubricating oil in the transmission case is pumped into the position of the motor needing cooling through an electronic oil pump. By pumping of the electronic oil pump, part of high-pressure lubricating oil flows into a stator part of the motor according to a conventional flow channel, part of lubricating oil is led in through a pipeline and reaches an area outside a rear bearing of an input shaft of a rear shell, the rotating speed of the input shaft of a transmission in the area can reach 15000rpm, the shell is static, and the lubricating oil in the static pipeline is led into a rotor shaft through the input shaft of the transmission rotating at high speed so as to play a role in cooling a rotor of the motor and reduce oil leakage as much as possible in the leading-in process.
SUMMERY OF THE UTILITY MODEL
The utility model provides a derailleur electric motor rotor lubricating oil cooling structure makes lubricating oil cool off electric motor rotor in leading oil pipe direct flow in electric motor rotor axle, avoids lubricating oil from direct flow to high-speed pivoted derailleur input shaft in static pipeline, reduces the leakage of the leading-in-process of lubricating oil, improves the lubricating oil flow that gets into electric motor rotor to improve electric motor rotor's cooling efficiency.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
derailleur motor rotor lubricating oil cooling structure all joins in marriage the derailleur input shaft of dress bearing, holds the input shaft rear bearing frame casing of derailleur input shaft rear end bearing and stretch into in the derailleur input shaft and with derailleur input shaft inner wall spline fit's motor rotor axle, its characterized in that including two front ends around: the transmission input shaft in coaxial setting oil pipe, oil pipe one end is fixed with input shaft rear bearing seat casing, the other end stretches into in the motor rotor shaft, and oil pipe and the last lubricating oil outlet UNICOM of input shaft rear bearing seat casing, with the leading-in to the motor rotor shaft of lubricating oil.
Preferably, the input shaft rear bearing seat shell is provided with a supporting cylinder coaxially extending into the transmission input shaft, the supporting cylinder and the input shaft rear bearing seat shell are integrally formed, the supporting cylinder is in clearance fit with the inner wall of the transmission input shaft, and the oil guide pipe is arranged in the supporting cylinder and is in transition fit with the supporting cylinder.
Preferably, the input shaft rear bearing seat shell is provided with a high-pressure lubricating oil ring groove coaxial with the oil guide pipe, the high-pressure lubricating oil ring groove is provided with a lubricating oil outlet communicated with a high-pressure lubricating oil pipeline in the transmission, the high-pressure lubricating oil ring groove is arranged on the outer side of the supporting cylinder, the oil guide pipe extends into the high-pressure lubricating oil ring groove, the oil guide pipe is provided with an oil inlet hole corresponding to the high-pressure lubricating oil ring groove, and the oil inlet holes are uniformly formed along the circumferential direction of the oil guide pipe.
Preferably, the oil guide pipe extends into the motor rotor shaft in a clearance fit mode and is separated from the motor rotor shaft and does not contact with the motor rotor shaft.
Preferably, an oil slinger is fixed in an inner cavity of the transmission input shaft and is in axial positioning fit with the guide pipe oil.
Preferably, the outer wall of the conduit oil is provided with a positioning step surface matched with the oil retainer ring, and the positioning step surface is abutted against the oil retainer ring to axially position the conduit oil.
The utility model has the advantages that:
1. the utility model discloses a derailleur electric motor rotor lubricating oil cooling structure, set up in the derailleur input shaft and lead oil pipe, it is fixed with input shaft rear bearing frame casing to lead oil pipe, guarantee to lead oil pipe and can not rotate along with the rotation of derailleur input shaft, will lead the lubricating oil export UNICOM on oil pipe and the input shaft rear bearing frame casing, make the lubricating oil stream that flows in the lubricating oil export to lead in the oil pipe, will lead oil pipe one end and stretch into to the electric motor rotor axle, make lubricating oil cool off electric motor rotor in leading into electric motor rotor axle through leading oil pipe directness, avoid lubricating oil from static pipeline in direct flow to high-speed pivoted derailleur input shaft, reduce the leading-in-process of lubricating oil and leak, improve the lubricating oil flow that gets into electric motor rotor, thereby improve electric motor rotor's cooling efficiency.
2. The supporting cylinder is arranged on the input shaft rear bearing seat shell, the supporting cylinder is used for radially supporting the guide oil, the oil guide pipe is guaranteed not to incline coaxially with the input shaft of the transmission, the oil guide reliability is improved, the oil guide pipe is in clearance fit with the motor rotor shaft and does not contact with the motor rotor shaft in a spaced mode, the oil guide pipe is guaranteed not to interfere with the rotation of the motor rotor, and the structural reliability is improved.
3. An oil retainer ring is fixed in an inner cavity of the transmission input shaft and is abutted against a positioning step surface on the oil guide pipe to form an oil retaining surface, and lubricating oil leaking from a position between the motor rotor shaft and the oil guide pipe flows towards the direction of the supporting cylinder and is enabled to flow to a spline matching position of the motor rotor shaft and the transmission input shaft, so that spline matching is lubricated, and the reliability of spline matching of the transmission input shaft and the motor rotor shaft is improved.
Drawings
Fig. 1 is an assembly diagram of a transmission input shaft and a motor rotor shaft.
FIG. 2 is a schematic diagram of a transmission motor rotor oil cooling configuration in an exemplary embodiment.
Fig. 3 is a partially enlarged view of fig. 2.
Detailed Description
The following describes embodiments of the present invention in detail with reference to fig. 1 to 3.
Transmission motor rotor lubricating oil cooling structure, including around two front ends all join in marriage the derailleur input shaft 1 of dress bearing, hold the input shaft rear bearing seat casing 2 of 1 rear end bearing of derailleur input shaft and stretch into in 1 of derailleur input shaft and with 1 inner wall spline fit's of derailleur input shaft motor rotor shaft 3, its characterized in that: the transmission input shaft 1 in coaxial setting lead oil pipe 4, lead oil pipe 4 one end and input shaft rear bearing seat casing 2 fixed, the other end stretches into in the motor rotor shaft 3, and lead oil pipe 4 and the last lubricating oil outlet UNICOM of input shaft rear bearing seat casing 2, with lubricating oil leading-in to motor rotor shaft 3 in.
The lubricating oil cooling structure for the motor rotor of the transmission is characterized in that an oil guide pipe 4 is arranged in a transmission input shaft 1, the oil guide pipe 4 is fixed with an input shaft rear bearing seat shell 2, the oil guide pipe 4 is guaranteed not to rotate along with the rotation of the transmission input shaft 1, the oil guide pipe 4 is communicated with a lubricating oil outlet in the input shaft rear bearing seat shell 2, lubricating oil flowing out of the lubricating oil outlet flows into the oil guide pipe 4, one end of the oil guide pipe 4 extends into a motor rotor shaft 3, the lubricating oil directly flows into the motor rotor shaft 3 through the oil guide pipe 4 to be cooled, the lubricating oil is prevented from directly flowing into the transmission input shaft rotating at a high speed from a static pipeline, leakage of the lubricating oil in the guiding process is reduced, the flow of the lubricating oil entering the motor rotor is improved, and the cooling efficiency of the motor rotor is improved.
The rear bearing seat shell 2 of the input shaft is provided with a supporting cylinder 5 coaxially extending into the input shaft 1 of the transmission, the supporting cylinder 5 is in clearance fit with the inner wall of the input shaft 1 of the transmission, and the oil guide pipe 4 is arranged in the supporting cylinder 5 and is in transition fit with the supporting cylinder 5. The supporting cylinder 5 is used for radially supporting the guide oil 4, so that the oil guide pipe 4 and the transmission input shaft 1 are coaxial and do not incline, and the oil guide reliability is improved. The oil guide pipe 4 and the support cylinder 5 are in transition fit to reduce leakage of lubricating oil between the oil guide pipe 4 and the support cylinder 5, and ensure that most of lubricating oil is directly guided into the motor rotor shaft 3 through the oil guide pipe 4.
Wherein, input shaft rear bearing frame casing 2 on seted up with lead the coaxial high-pressure lubricating oil annular 21 of oil pipe 4, set up on the high-pressure lubricating oil annular 21 with the lubricating oil export 22 of the high-pressure lubricating oil pipeline UNICOM in the derailleur, high-pressure lubricating oil annular 21 sets up in the support cylinder 5 outside, lead oil pipe 4 and stretch into to high-pressure lubricating oil annular 21 in, lead oil pipe 4 and go up to open the inlet port 41 corresponding with high-pressure lubricating oil annular 21, and the inlet port 41 evenly sets up a plurality ofly along leading oil pipe 4 circumference. Lubricating oil pumped by an electronic oil pump in the transmission flows to a lubricating oil outlet 22 through a high-pressure lubricating oil pipeline in the transmission and enters a high-pressure lubricating oil ring groove 21, and the lubricating oil in the high-pressure lubricating oil ring groove 21 flows to an oil guide pipe 4 through an oil inlet 41 to form communication between the lubricating oil outlet 22 and the oil guide pipe 4; the oil inlet holes 41 are uniformly formed along the circumferential direction of the oil guide pipe 4, so that the lubricating oil flowing from the lubricating oil outlet 22 to the high-pressure lubricating oil ring groove 21 can flow into the oil guide pipe 4 through the oil inlet holes 41 in time.
The oil guide pipe 4 is in clearance fit with the motor rotor shaft 3 and is separated from the motor rotor shaft 3 to avoid contact, so that the oil guide pipe 4 is ensured not to interfere with the rotation of the motor rotor shaft 3, and the structural reliability is improved.
An oil slinger 11 is fixed in an inner cavity of the transmission input shaft 1, and the oil slinger 11 is matched with the guide pipe oil 4 in an axial positioning mode. The slinger 11 is used to locate the axial position of the conduit oil 4 in the transmission input shaft 1.
The outer wall of the conduit oil 4 is provided with a positioning step surface 42 matched with the oil retainer 11, and the positioning step surface 42 is abutted against the oil retainer 11 to axially position the conduit oil 4. The oil retainer ring 11 abuts against the positioning step surface 42 on the oil guide pipe 4 to form an oil retaining surface, so that lubricating oil leaking from the space between the motor rotor shaft 3 and the oil guide pipe 4 is prevented from flowing towards the direction of the supporting cylinder 5, and the lubricating oil flows to the spline matching position A of the motor rotor shaft 3 and the transmission input shaft 1, so that spline matching is lubricated, and the reliability of spline matching of the transmission input shaft and the motor rotor shaft is improved.
The technical solutions of the embodiments of the present invention are completely described above with reference to the accompanying drawings, and it should be noted that the described embodiments are only some embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Claims (6)
1. Derailleur electric motor rotor lubricating oil cooling structure, including transmission input shaft (1) of the equal rigging bearing in both ends around, hold input shaft rear bearing housing (2) of transmission input shaft (1) rear end bearing and stretch into in transmission input shaft (1) and with transmission input shaft (1) inner wall spline complex electric motor rotor axle (3), its characterized in that: the transmission input shaft (1) in coaxial setting lead oil pipe (4), lead oil pipe (4) one end and input shaft rear bearing seat casing (2) fixed, the other end stretches into in motor rotor axle (3), and lead oil pipe (4) and the smooth oil outlet UNICOM on input shaft rear bearing seat casing (2), with the leading-in to motor rotor axle (3) of lubricating oil.
2. The transmission motor rotor lubrication oil cooling structure according to claim 1, characterized in that: the rear bearing seat shell (2) of the input shaft is provided with a supporting cylinder (5) coaxially extending into the input shaft (1) of the transmission, the supporting cylinder (5) and the rear bearing seat shell (2) of the input shaft are integrally formed, the supporting cylinder (5) is in clearance fit with the inner wall of the input shaft (1) of the transmission, and an oil guide pipe (4) is arranged in the supporting cylinder (5) and is in transition fit with the supporting cylinder (5).
3. The transmission motor rotor lubrication oil cooling structure according to claim 2, characterized in that: input shaft rear bearing seat casing (2) on offer with lead oil pipe (4) coaxial high-pressure lubrication oil ring groove (21), set up on high-pressure lubrication oil ring groove (21) with lubricating oil export (22) of the high-pressure lubrication oil pipeline UNICOM in the derailleur, high-pressure lubrication oil ring groove (21) set up in a supporting cylinder (5) outside, lead in oil pipe (4) stretch into to high-pressure lubrication oil ring groove (21), lead and open on oil pipe (4) have with high-pressure lubrication oil ring groove (21) corresponding inlet port (41), and inlet port (41) evenly set up a plurality ofly along leading oil pipe (4) circumference.
4. The transmission motor rotor lubrication oil cooling structure according to claim 1, characterized in that: the oil guide pipe (4) is in clearance fit with and extends into the motor rotor shaft (3), and is separated from the motor rotor shaft (3) and is not in contact with the motor rotor shaft.
5. The transmission motor rotor lubrication oil cooling structure according to claim 4, characterized in that: an oil retainer ring (11) is fixed in an inner cavity of the transmission input shaft (1), and the oil retainer ring (11) is matched with the oil guide pipe (4) in an axial positioning mode.
6. The transmission motor rotor lubrication oil cooling structure according to claim 5, characterized in that: the outer wall of the oil guide pipe (4) is provided with a positioning step surface (42) matched with the oil retainer ring (11), and the positioning step surface (42) is abutted against the oil retainer ring (11) to axially position the oil guide pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120193727.1U CN214331422U (en) | 2021-01-25 | 2021-01-25 | Lubricating oil cooling structure for motor rotor of transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120193727.1U CN214331422U (en) | 2021-01-25 | 2021-01-25 | Lubricating oil cooling structure for motor rotor of transmission |
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| Publication Number | Publication Date |
|---|---|
| CN214331422U true CN214331422U (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120193727.1U Active CN214331422U (en) | 2021-01-25 | 2021-01-25 | Lubricating oil cooling structure for motor rotor of transmission |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117419153A (en) * | 2023-12-18 | 2024-01-19 | 中国第一汽车股份有限公司 | In-shaft oil guide pipe, transmission case motor branch lubricating structure and vehicle |
-
2021
- 2021-01-25 CN CN202120193727.1U patent/CN214331422U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117419153A (en) * | 2023-12-18 | 2024-01-19 | 中国第一汽车股份有限公司 | In-shaft oil guide pipe, transmission case motor branch lubricating structure and vehicle |
| CN117419153B (en) * | 2023-12-18 | 2024-03-15 | 中国第一汽车股份有限公司 | In-shaft oil guide pipe, transmission case motor branch lubricating structure and vehicle |
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