CN211667138U - Sealing structure, driving system and new energy automobile - Google Patents
Sealing structure, driving system and new energy automobile Download PDFInfo
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- CN211667138U CN211667138U CN201922377187.8U CN201922377187U CN211667138U CN 211667138 U CN211667138 U CN 211667138U CN 201922377187 U CN201922377187 U CN 201922377187U CN 211667138 U CN211667138 U CN 211667138U
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Abstract
The utility model relates to a seal structure, actuating system and new energy automobile. The sealing structure comprises a shell, a static ring, a dynamic ring and a first sealing ring. The outer wall of the static ring is fixedly connected with the inner wall of the shell. The movable ring is sleeved on the motor shaft or the reducer shaft. Because the quiet ring has along the first recess of annular extension, the ascending tip in the axial of rotating ring inserts first recess, and the rotating ring is located the one side that is close to the speed reducer of quiet ring to first recess makes fluid become tortuous and complicated from the route that the speed reducer inner chamber got into the motor inner chamber, and then fluid is difficult to reveal to the motor from the speed reducer, makes seal structure sealing reliability high. Because quiet ring and casing fixed connection, rotating ring and motor shaft or reduction gear shaft fixed connection, first sealing washer respectively with rotating ring and the sealed cooperation of quiet ring to when the motor drove the reduction gear operation, the motor shaft or reduction gear shaft drove the rotating ring rotatory, and first sealing washer is not with the axial plane friction of reduction gear shaft, thereby not fragile reduction gear shaft's axial plane.
Description
Technical Field
The utility model relates to a reduction gear seals technical field, in particular to seal structure, actuating system and new energy automobile.
Background
New energy automobiles gradually become the development direction of the automobile industry, and new energy driving systems also become the key point of industrial research. In order to meet the requirements of continuously improved electric automobiles on compact structure and light weight of the whole automobile. The market has therefore begun to present integrated drive systems of various types of construction. The integrated electric drive assembly integrates a drive motor and a speed reducer into a shell. The new energy automobile does not have an engine, but the motor is directly connected with the reducer to output power, and the traditional sealing method is to install a common framework oil seal at the input end of the reducer. The output rotating speed of the motor is far higher than that of an engine, and a common framework oil seal can have a large failure risk after long-time high-speed abrasion. Once the failure occurs, the lubricating oil in the cavity of the speed reducer can enter the motor through the failed oil seal, so that the whole driving assembly is seriously failed.
SUMMERY OF THE UTILITY MODEL
Therefore, a sealing structure with high sealing reliability, a driving system and a new energy automobile need to be provided for solving the problem that the conventional common framework oil seal is easy to lose efficacy.
The embodiment of the application provides a seal structure for block the fluid of the inner chamber of speed reducer and reveal the inner chamber to the motor, include:
a housing;
the static ring extends along the ring shape, the static ring is positioned in the shell, the outer wall of the static ring is fixedly connected with the inner wall of the shell, and the static ring is provided with a first groove extending along the ring shape;
the movable ring extends along an annular shape, is positioned in the shell and is sleeved on a motor shaft of the motor or a speed reducer shaft of the speed reducer, the inner wall of the movable ring is fixedly connected with the motor shaft or the speed reducer shaft, the axial end of the movable ring is inserted into the first groove, and the movable ring is positioned on one side, close to the speed reducer, of the static ring; and
and the first sealing ring is in sealing fit with the inner wall of the movable ring and the side wall of the first groove respectively.
Foretell seal structure, because the quiet ring has along the first recess of annular extension, the ascending tip in the axial of rotating ring inserts first recess, and the rotating ring is located the one side that is close to the speed reducer of quiet ring to first recess makes fluid become the tortuous and complicated from the route that the speed reducer inner chamber got into the motor inner chamber, and then fluid is difficult to reveal to the motor from the speed reducer, makes seal structure sealing reliability high. Because quiet ring and casing fixed connection, rotating ring and motor shaft or reduction gear shaft fixed connection, first sealing washer respectively with rotating ring and the sealed cooperation of quiet ring to when the motor drives the reduction gear operation, motor shaft or reduction gear shaft drive the rotating ring rotatory, first sealing washer is not with the axial plane contact of reduction gear shaft, thereby not fragile reduction gear shaft's axial plane.
In one embodiment, the first groove has a first sidewall and a second sidewall opposite the first sidewall, the second sidewall being opposite the outer wall of the rotating ring; the sealing structure further comprises a protruding portion protruding out of the outer wall of the moving ring, the protruding portion extends along the circumferential direction of the moving ring, a second groove extending along the annular direction is formed in the protruding portion, an opening of the second groove is used for facing away from the speed reducer, and the second side wall is inserted into the second groove.
In one embodiment, the first groove has a first sidewall and a second sidewall opposite the first sidewall, the second sidewall being opposite the outer wall of the rotating ring; the outer wall of the moving ring is provided with an oil discharge groove extending along the circumferential direction of the moving ring, the second side wall is provided with an oil discharge through hole, and the oil discharge through hole is communicated with the oil discharge groove.
In one embodiment, the first groove has a first sidewall and a second sidewall opposite the first sidewall, the second sidewall being opposite the outer wall of the rotating ring; the first side wall is provided with a third groove, the inner wall of the movable ring is provided with a fourth groove, the opening of the third groove is opposite to the opening of the fourth groove, and the first sealing ring is in sealing fit with the inner wall of the third groove and the inner wall of the fourth groove respectively.
In an embodiment, the sealing structure further includes a second sealing ring, the second sealing ring is sleeved on the stationary ring, and the second sealing ring is respectively in sealing fit with the outer wall of the stationary ring and the inner wall of the housing.
In one embodiment, the second seal ring is an O-ring seal.
In an embodiment, the sealing structure further includes a third sealing ring, the third sealing ring is configured to be sleeved on the reducer shaft or the motor shaft, an inner wall of the third sealing ring is configured to be in sealing engagement with a side surface of the motor shaft or a side surface of the reducer shaft, and an outer wall of the third sealing ring is configured to be in sealing engagement with an inner wall of the rotating ring.
In one embodiment, the first seal ring is an O-ring seal.
The embodiment of the application further provides a driving system, which comprises a motor, a speed reducer and any one of the sealing structures in the above embodiments, wherein a motor shaft of the motor is coaxially connected with a speed reducer shaft of the speed reducer, and the movable ring sleeve is arranged and fixed on the motor shaft or the speed reducer shaft.
The embodiment of the application further provides a new energy automobile, which comprises a body and the driving system in the embodiment, wherein the driving system is in driving connection with the body.
Drawings
FIG. 1 is a cross-sectional view of an embodiment of a seal structure;
FIG. 2 is a schematic diagram of a drive system in one embodiment;
FIG. 3 is a cross-sectional view of a stationary ring of the seal structure of FIG. 1;
figure 4 is a cross-sectional view of the rotating ring of the seal of figure 1.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It should be noted that when a portion is referred to as being "secured to" another portion, it can be directly on the other portion or there can be an intervening portion. When a portion is said to be "connected" to another portion, it may be directly connected to the other portion or intervening portions may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 in conjunction with fig. 2, an embodiment of the present application provides a sealing structure 100. The sealing structure 100 is used for blocking oil in the inner cavity of the speed reducer 11 from leaking to the inner cavity of the motor 12. The seal structure 100 includes a housing (not shown), a stationary ring 110, a moving ring 120, and a first seal ring 130.
The stationary ring 110 extends in a ring shape. The stationary ring 110 is located within the housing. The outer wall of the stationary ring 110 is fixedly connected with the inner wall of the housing. Specifically, the outer wall of the stationary ring 110 and the inner wall of the housing may be fixedly connected by way of interference fit.
The rotating ring 120 extends in a ring shape. The rotating ring 120 is located within the housing. The rotating ring 120 is fitted on a motor shaft 121 of the motor 12 or a reducer shaft of the reducer 11. Specifically, the inner wall of the rotating ring 120 and the motor shaft 121 or the reducer shaft may be fixedly connected by interference fit. The moving ring 120 is located on the side of the stationary ring 110 close to the reduction gear 11.
Referring to fig. 3 in conjunction with fig. 1, the stationary ring 110 has a first groove 101 extending along a ring shape. An end portion of the rotating ring 120 in the axial direction is inserted into the first groove 101. The first sealing ring 130 is in sealing engagement with the inner wall of the movable ring 120 and the side wall of the first groove 101, respectively.
Specifically, the first seal ring 130 may be an O-ring or other type of seal ring. The first groove 101 has a first side wall 101a, a second side wall 101b opposite to the first side wall 101a, and a bottom wall 101c connected to the first side wall 101a and the second side wall 101b, respectively. The opening of the first groove 101 faces the speed reducer 11, so that the end portion of the rotating ring 120 in the axial direction is inserted into the first groove 101.
Because the rotating ring 120 is located on the side of the stationary ring 110 close to the speed reducer 11, therefore, if oil from the inner cavity of the speed reducer 11 needs to pass through the space between the rotating ring 120 and the stationary ring 110 and enter the inner cavity of the motor 12, the oil firstly needs to enter the first groove 101, then sequentially flows through the second side wall 101b, the bottom wall 101c and the first side wall 101a of the first groove 101, and then flows out of the stationary ring 110 from the first side wall 101a, so that the oil can enter the inner cavity of the motor 12, and therefore, a path for the oil to enter the inner cavity of the motor 12 from the inner cavity of the speed reducer 11 becomes tortuous and complex, and the oil is difficult to leak to the inner cavity of the motor 12 from the inner cavity of the.
In the sealing structure 100, the stationary ring 110 has the first groove 101 extending along the annular direction, the end portion of the movable ring 120 in the axial direction is inserted into the first groove 101, and the movable ring 120 is located on the side of the stationary ring 110 close to the speed reducer 11, so that the first groove 101 makes the path of the oil entering the inner cavity of the motor 12 from the inner cavity of the speed reducer 11 become tortuous and complicated, and the oil is difficult to leak from the speed reducer 11 to the motor 12, and the sealing reliability of the sealing structure 100 is high. Because the stationary ring 110 is fixedly connected with the housing, the movable ring 120 is fixedly connected with the motor shaft 121 or the reducer shaft, and the first sealing ring 130 is respectively in sealing fit with the movable ring 120 and the stationary ring 110, when the motor 12 drives the reducer 11 to operate, the motor shaft 121 or the reducer shaft drives the movable ring 120 to rotate, so that the first sealing ring 130 is not in contact with the shaft surface of the reducer shaft, and the shaft surface of the reducer shaft is not easy to damage.
Referring to fig. 1 to fig. 3, in an embodiment, the second sidewall 101b is opposite to the outer wall of the movable ring 120. The seal structure 100 further includes a projection 160 projecting from the outer wall of the rotating ring 120. The protrusion 160 extends in the circumferential direction of the rotating ring 120. The projection 160 is provided with a second groove 102 extending in a ring shape. The opening of the second groove 102 faces away from the reduction gear 11. The end of the second sidewall 101b is inserted into the second groove 102.
Specifically, the protrusion 160 is integrally formed with the rotating ring 120. Oil from the inner cavity of the speed reducer 11 first flows through the second side wall 101b when entering the first groove 101. Because the second side wall 101b is inserted into the second groove 102, and the opening of the second groove 102 faces away from the speed reducer 11, if oil from the inner cavity of the speed reducer 11 enters the first groove 101, the oil firstly enters the second groove 102, so that the second groove 102 prolongs the path of the oil entering the first groove 101 from the inner cavity of the speed reducer 11, and the path of the oil entering the first groove 101 is more tortuous, and further the path of the oil entering the inner cavity of the motor 12 is prolonged and more tortuous, the sealing effect of the sealing structure 100 is enhanced, and the sealing reliability of the sealing structure 100 is high.
Further, because the opening of the second groove 102 faces away from the speed reducer 11, oil from one side of the speed reducer 11 is more difficult to enter the second groove 102, and then the oil is more difficult to enter the first groove 101, the sealing effect of the sealing structure 100 is further enhanced, and the sealing reliability of the sealing structure 100 is high.
Referring to fig. 1 to 4, in an embodiment, an oil discharge groove 103 is formed on an outer wall of the movable ring 120. The oil discharge groove 103 extends in the circumferential direction of the rotating ring 120. The oil relief groove 103 opens toward the second side wall 101 b. The second sidewall 101b is provided with an oil discharge through hole 104. One end opening of the oil discharge through hole 104 communicates with the second side wall 101b, and the other end opening communicates with the inner cavity of the speed reducer 11, so that if a small amount of oil enters the first groove 101, the oil can be temporarily stored in the oil discharge groove 103. The oil discharge groove 103 plays a role of temporarily storing oil, so that the oil easily flows to the oil discharge through hole 104 under the action of gravity, and then flows back to the inner cavity of the speed reducer 11 from the oil discharge through hole 104.
Referring to fig. 1, fig. 3 and fig. 4, in an embodiment, a third groove 104 is disposed on the first sidewall 101a, a fourth groove 105 is disposed on an inner wall of the movable ring 120, an opening of the third groove 104 is opposite to an opening of the fourth groove 105, and the first sealing ring 130 is respectively in sealing fit with the inner wall of the third groove 104 and the inner wall of the fourth groove 105.
Specifically, if oil is to flow out of the first groove 101 from the first side wall 101a, the oil needs to pass through the inner walls of the first sealing ring 130 and the third groove 104 or pass through the inner walls of the first sealing ring 130 and the fourth groove 105, so that the path of the oil flowing out of the first groove 101 is prolonged, the path of the oil flowing out of the first groove 101 is more tortuous, the difficulty of the oil flowing out of the first groove 101 is increased, the difficulty of the oil flowing into the inner cavity of the motor 12 is further enhanced, the sealing effect of the sealing structure 100 is further enhanced, and the sealing reliability of the sealing structure 100 is high.
Referring to fig. 1, in an embodiment, the sealing structure 100 further includes a second sealing ring 140. The second sealing ring 140 is sleeved on the stationary ring 110. The second sealing ring 140 is respectively in sealing fit with the outer wall of the stationary ring 110 and the inner wall of the housing, so that the second sealing ring 140 enables the outer wall of the stationary ring 110 and the inner wall of the housing to have better sealing performance, and oil from the inner cavity of the speed reducer 11 is difficult to flow into the inner cavity of the motor 12 from the space between the stationary ring 110 and the housing, so that the sealing effect of the sealing structure 100 can be enhanced. Specifically, the second seal 140 may be an O-ring or other type of seal.
Referring to fig. 1, in an embodiment, the sealing structure 100 further includes a third sealing ring 150. The third sealing ring 150 is sleeved on the motor shaft 121 or the reducer shaft. The outer wall of the third seal ring 150 is in sealing engagement with the inner wall of the rotating ring 120. The inner wall of the third seal ring 150 is in sealing engagement with the side surface of the motor shaft 121 or the side surface of the reducer shaft. The third seal ring 150 makes the inner wall of the rotating ring 120 and the reducer shaft or the motor shaft 121 have better sealing performance, so that oil from the inner cavity of the reducer 11 is difficult to flow to the inner cavity of the motor 12 from the space between the rotating ring 120 and the reducer shaft or the space between the rotating ring 120 and the motor shaft 121, and the sealing effect of the sealing structure 100 can be enhanced. Specifically, the third seal ring 150 may be an O-ring or other type of seal ring.
Referring to fig. 2, the present embodiment further provides a driving system 10. The drive system 10 includes the motor 12, the speed reducer 11, and the seal structure 100 of any of the above embodiments. The motor shaft 121 of the motor 12 and the reducer shaft of the reducer 11 are coaxially connected. The movable ring 120 is sleeved on and fixed to the motor shaft 121 or the reducer shaft.
In the above-described drive system 10, since the stationary ring 110 has the first groove 101 extending along the annular direction, the end portion of the moving ring 120 in the axial direction is inserted into the first groove 101, and the moving ring 120 is located on the side of the stationary ring 110 close to the speed reducer 11, so that the first groove 101 makes the path of the oil entering the inner cavity of the motor 12 from the inner cavity of the speed reducer 11 become tortuous and complicated, and the oil is difficult to leak from the speed reducer 11 to the motor 12, and the sealing reliability of the sealing structure 100 is high. Because the stationary ring 110 is fixedly connected with the housing, the movable ring 120 is fixedly connected with the motor shaft 121 or the reducer shaft, and the first sealing ring 130 is respectively in sealing fit with the movable ring 120 and the stationary ring 110, when the motor 12 drives the reducer 11 to operate, the motor shaft 121 or the reducer shaft drives the movable ring 120 to rotate, and the first sealing ring 130 is not in contact with the shaft surface of the reducer shaft, so that the shaft surface of the reducer shaft is not easy to damage.
The embodiment of the application also provides a new energy automobile (not shown). The new energy automobile comprises a body and the driving system 10. The drive system 10 is in driving connection with the body.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The utility model provides a seal structure for block that fluid of inner chamber of speed reducer reveals the inner chamber to the motor, its characterized in that includes:
a housing;
the static ring extends along the ring shape, the static ring is positioned in the shell, the outer wall of the static ring is fixedly connected with the inner wall of the shell, and the static ring is provided with a first groove extending along the ring shape;
the movable ring extends along an annular shape, is positioned in the shell and is sleeved on a motor shaft of the motor or a speed reducer shaft of the speed reducer, the inner wall of the movable ring is fixedly connected with the motor shaft or the speed reducer shaft, the axial end of the movable ring is inserted into the first groove, and the movable ring is positioned on one side, close to the speed reducer, of the static ring; and
and the first sealing ring is in sealing fit with the inner wall of the movable ring and the side wall of the first groove respectively.
2. The seal structure of claim 1, wherein the first groove has a first sidewall and a second sidewall opposite the first sidewall, the second sidewall being opposite the outer wall of the rotating ring; the sealing structure further comprises a protruding portion protruding out of the outer wall of the moving ring, the protruding portion extends along the circumferential direction of the moving ring, a second groove extending along the annular direction is formed in the protruding portion, an opening of the second groove is used for facing away from the speed reducer, and the second side wall is inserted into the second groove.
3. The seal structure of claim 1, wherein the first groove has a first sidewall and a second sidewall opposite the first sidewall, the second sidewall being opposite the outer wall of the rotating ring; the outer wall of the moving ring is provided with an oil discharge groove extending along the circumferential direction of the moving ring, the second side wall is provided with an oil discharge through hole, and the oil discharge through hole is communicated with the oil discharge groove.
4. The seal structure of claim 1, wherein the first groove has a first sidewall and a second sidewall opposite the first sidewall, the second sidewall being opposite the outer wall of the rotating ring; the first side wall is provided with a third groove, the inner wall of the movable ring is provided with a fourth groove, the opening of the third groove is opposite to the opening of the fourth groove, and the first sealing ring is in sealing fit with the inner wall of the third groove and the inner wall of the fourth groove respectively.
5. The seal structure of claim 1, further comprising a second seal ring disposed around the stationary ring, the second seal ring being in sealing engagement with an outer wall of the stationary ring and an inner wall of the housing, respectively.
6. The seal structure of claim 5, wherein the second seal ring is an O-ring seal.
7. The seal structure of claim 1, further comprising a third seal ring, wherein the third seal ring is configured to be fitted around the reducer shaft or the motor shaft, an inner wall of the third seal ring is configured to be in sealing engagement with a side surface of the motor shaft or a side surface of the reducer shaft, and an outer wall of the third seal ring is configured to be in sealing engagement with an inner wall of the rotating ring.
8. The seal structure of claim 1, wherein the first seal ring is an O-ring seal.
9. A drive system comprising a motor, a reducer, and a seal structure according to any one of claims 1 to 8, wherein a motor shaft of the motor and a reducer shaft of the reducer are coaxially connected, and the rotating ring is fitted around and fixed to the motor shaft or the reducer shaft.
10. A new energy automobile, characterized by comprising a body and the drive system according to claim 9, wherein the drive system is in driving connection with the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922377187.8U CN211667138U (en) | 2019-12-26 | 2019-12-26 | Sealing structure, driving system and new energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922377187.8U CN211667138U (en) | 2019-12-26 | 2019-12-26 | Sealing structure, driving system and new energy automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211667138U true CN211667138U (en) | 2020-10-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922377187.8U Active CN211667138U (en) | 2019-12-26 | 2019-12-26 | Sealing structure, driving system and new energy automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211667138U (en) |
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2019
- 2019-12-26 CN CN201922377187.8U patent/CN211667138U/en active Active
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