CN210461548U - Electric automobile speed reducer with parking function - Google Patents
Electric automobile speed reducer with parking function Download PDFInfo
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- CN210461548U CN210461548U CN201920445601.1U CN201920445601U CN210461548U CN 210461548 U CN210461548 U CN 210461548U CN 201920445601 U CN201920445601 U CN 201920445601U CN 210461548 U CN210461548 U CN 210461548U
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Abstract
The utility model belongs to the reduction gear field especially relates to an electric automobile reduction gear of area parking function. Including reduction gear casing and reduction gear lid, input gear set in the reduction gear casing includes input shaft and input gear, and driven gear set includes driven shaft, first driven gear and second driven gear, and output gear set includes output shaft and output gear, and first driven gear meshes with the input gear mutually, and second driven gear meshes with the output gear mutually. The parking mechanism is characterized in that a parking disc of the parking mechanism is fixed on a driven shaft, a parking rod is hinged to a speed reducer shell through a rotating shaft, a convex claw of the parking rod is matched with a tooth groove area of the parking disc in an embedded mode, a torsion spring is arranged between the parking rod and the speed reducer shell, a trigger piece is fixed on the parking rod, and the trigger piece is matched with a position sensor. The utility model discloses can realize electric automobile's parking function, on the basis that does not change differential mechanism shell structure, install parking mechanism in the reduction gear casing, the integrated level is high, and manufacturing cost is also lower.
Description
Technical Field
The utility model belongs to the reduction gear field especially relates to an electric automobile reduction gear of area parking function.
Background
At present, the pure electric vehicle market is rapidly developed towards a plurality of high-performance directions such as higher efficiency, stronger power, larger power-to-weight ratio, higher reliability, lower cost and the like. The automobile parking mechanism is used in the automobile parking state, and the automobile is kept still and does not move no matter in the flat road or slope state, so that the safety of the automobile and the surrounding environment in the parking state is guaranteed.
In order to realize electronic parking, a set of electronic parking device has to be added to the traditional electric automobile, so that the cost of the traditional electric automobile is high, and the traditional electric automobile is difficult to popularize in a large scale. The traditional wheel edge driving mechanism comprises a wheel edge motor and a wheel edge reducer, wherein the wheel edge motor is used as a power source, the internal structure is compact, the requirement on the operating environment is high, and the difficulty in realizing integration with other components is high; although the wheel reduction gear has relatively lower requirements on the use environment than a wheel motor, the wheel reduction gear mostly only comprises each transmission shaft and transmission gear which are positioned on a transmission path, and does not have integratable components. Although some wheel-side driving mechanisms in the market are also provided with parking mechanisms in the speed reducer, and parking discs arranged on a transmission shaft of the speed reducer are clamped through parking rods to realize parking, the parking discs are also arranged on an input shaft or an intermediate shaft in consideration of reducing acting force borne by the parking rods as much as possible, so that the available space around the parking rods is small, and integration of other functional components and the parking mechanisms is difficult to realize. Therefore, how to improve the integration of the parking mechanism in the speed reducer becomes a barrier for further optimizing the wheel-side driving mechanism on the basis of not changing the structure of the shell of the speed reducer.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve prior art's weak point, and provide a simple structure, realize the electric automobile reduction gear of taking parking function of parking effect under the prerequisite that does not change the casing structure of reduction gear.
The utility model aims at solving the problems by the following technical scheme:
the utility model provides a take electric automobile reduction gear of parking function, including retarder housing, with retarder housing complex speed reducer lid, has its characterized in that: an input gear set, a driven gear set, an output gear set and a parking mechanism are arranged in the speed reducer shell;
the input gear set comprises an input shaft and an input gear sleeved on the input shaft, the driven gear set comprises a driven shaft, a first driven gear and a second driven gear, the first driven gear and the second driven gear are sleeved on the driven shaft, the output gear set comprises an output shaft and an output gear, the output gear is sleeved on the output shaft, the first driven gear is meshed with the input gear, the second driven gear is meshed with the output gear, and an input shaft core, a driven shaft core and an output shaft core are parallel;
the parking mechanism comprises a parking disc, a parking rod, a rotating shaft, a torsion spring, an elastic abutting mechanism, a trigger piece and a position sensor; the parking disc is fixed on the driven shaft, the parking rod is hinged to the speed reducer shell through the rotating shaft, the shaft core of the rotating shaft is parallel to the shaft core of the input shaft, the parking rod is provided with a convex claw which is matched with the tooth groove area of the parking disc in an embedded mode, a torsion spring is arranged between the parking rod and the speed reducer shell, and the elastic abutting mechanism abuts against the parking rod to rotate towards the position close to the parking disc; the trigger piece is fixed on the parking rod and matched with the position sensor.
Based on the structure, when parking is needed, the parking mechanism is in a locking state, the convex claw of the parking rod swings to one side close to the parking disc, so that the convex claw is meshed with the parking disc, the parking disc is locked, the input shaft stops rotating, and power cannot be output. When the parking mechanism does not need to be parked, the parking mechanism is in an unlocking state, the convex claw swings to one side far away from the parking disc, so that the convex claw is separated from the parking disc, and the input shaft can rotate and input power. The parking rod is structurally designed to adapt to the internal space of the existing differential shell, the parking mechanism is arranged in the reducer shell on the premise of not changing the differential structure, the mechanical and software matching of the reducer assembly can be completed before the product leaves a factory, the automatic calibration matching of a control system and a mechanical system is carried out without adding a process on a finished automobile assembly line, and the production cost is greatly reduced; because the parking mechanism is arranged in the shell of the speed reducer, the integration level is high, and the assembly and the subsequent maintenance are convenient.
Preferably, the input gear diameter is less than first driven gear diameter, and second driven gear diameter is less than the output gear diameter.
Preferably, the output shaft of the utility model is arranged on the right side of the driven shaft; the rotating shaft is fixed on the speed reducer shell and is positioned at the junction above the first driven gear and the output gear, and the elastic abutting mechanism is arranged on the speed reducer shell and is positioned above the driven shaft; the middle of the parking rod is rotatably arranged on the rotating shaft, the parking rod comprises an extrusion section matched with the elastic pressing mechanism and an embedding section matched with the parking disc in an embedded mode, the extrusion section is positioned above the left side of the embedding section, the extrusion section and the embedding section are arranged in an obtuse angle mode, the lower side of the left end of the extrusion section is matched with the elastic pressing mechanism, and the convex claw is arranged on the lower side of the right end of the embedding section; the position sensor is arranged on the right side of the rotating shaft, the trigger piece is of a rod-shaped structure, one end of the trigger piece is fixed in the middle of the parking rod, the other end of the trigger piece is matched with the position sensor, and the trigger piece is positioned on the upper right of the embedding section.
Preferably, elasticity is supported and is pressed mechanism and is included the guide arm, and the guide arm removes along its length direction, sets up the extrusion piece on the guide arm, and the cooperation position on extrusion piece and the parking pole is the inclined plane shape, is provided with floating spring between extrusion piece and the guide arm, and floating spring provides elasticity and orders about the extrusion piece and remove and extrude parking pole to the position rotation that is close to the parking dish to parking pole department.
Preferably, the extrusion piece includes circular cone portion and cylinder portion, and the extrusion piece is arranged with the guide arm with the core.
Preferably, the inclined plane platform has been seted up with extrusion piece complex position on the parking pole.
Preferably, the torsional spring mounting hole has been seted up on the parking pole, the torsional spring cover is established in the pivot and is in between parking pole and the retarder casing, and torsional spring one end is fixed on retarder casing, and the other end setting is in the torsional spring mounting hole.
Preferably, input gear, first driven gear, second driven gear and output gear are the skewed tooth gear.
Compared with the prior art the utility model has the following characteristics and beneficial effect:
1. when the parking is needed, the parking mechanism is in a locking state, the convex claw of the parking rod swings to one side close to the parking disc, so that the convex claw is meshed with the parking disc, the parking disc is locked, the input shaft stops rotating, and power cannot be output. When the parking mechanism does not need to be parked, the parking mechanism is in an unlocking state, the convex claw swings to one side far away from the parking disc, so that the convex claw is separated from the parking disc, and the input shaft can rotate and input power. The parking rod is structurally designed to adapt to the internal space of the existing differential shell, the parking mechanism is arranged in the reducer shell on the premise of not changing the differential structure, the mechanical and software matching of the reducer assembly can be completed before the product leaves a factory, the automatic calibration matching of a control system and a mechanical system is carried out without adding a process on a finished automobile assembly line, and the production cost is greatly reduced; because the parking mechanism is arranged in the shell of the speed reducer, the integration level is high, and the assembly and the subsequent maintenance are convenient.
The diameter of the input gear is smaller than that of the first driven gear, the diameter of the second driven gear is smaller than that of the first driven gear, and the diameter of the second driven gear is smaller than that of the output gear. Through set up first driven gear and second driven gear between input gear and output gear and carry out the transition, prevent effectively that the velocity ratio is too big, the structure is too big.
The rotating shaft is fixed on the speed reducer shell and arranged at the gap between the first driven gear and the output gear, the parking rod is made into an extrusion section and an embedding section which are arranged in an obtuse angle, the transverse occupied space of the parking rod is reduced, the parking mechanism can be arranged in the speed reducer without changing the structure of the speed reducer shell, and the production cost is reduced.
Drawings
Fig. 1 is the main view structure schematic diagram of the reducer case of the present invention.
Fig. 2 is the schematic view of the three-dimensional structure of the reducer case of the present invention.
Fig. 3 is a schematic view of the internal three-dimensional structure of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, an electric vehicle retarder with a parking function includes a retarder housing 1 and a retarder cover engaged with the retarder housing 1. An input gear set, a driven gear set, an output gear set and a parking mechanism are arranged in the speed reducer shell 1.
The input gear set comprises an input shaft 3 and an input gear 4 sleeved on the input shaft 3, the driven gear set comprises a driven shaft 5, a first driven gear 6 and a second driven gear 7 are sleeved on the driven shaft 5, the output gear set comprises an output shaft 8 and an output gear 9 sleeved on the output shaft 8, the first driven gear 6 is meshed with the input gear 4, the second driven gear 7 is meshed with the output gear 9, and the shaft core of the input shaft 3, the shaft core of the driven shaft 5 and the shaft core of the output shaft 8 are parallel to each other.
The parking mechanism comprises a parking disc 10, a parking rod 11, a rotating shaft 12, a torsion spring 13, an elastic abutting mechanism 14, a trigger 15 and a position sensor 16. The parking disc 10 is fixed on the driven shaft 5, the parking rod 11 is hinged on the speed reducer casing 1 through a rotating shaft 12, a shaft core of the rotating shaft 12 is parallel to a shaft core of the input shaft 8, a convex claw 17 is arranged on the parking rod 11, the convex claw 17 is matched with a tooth space area of the parking disc 10 in an embedded mode, a torsion spring 13 is arranged between the parking rod 11 and the speed reducer casing 1, and the elastic abutting and pressing mechanism 14 abuts and presses the parking rod 11 to rotate towards a position close to the parking disc 10. The trigger 15 is fixed to the parking rod 11, and the trigger 15 is engaged with the position sensor 16.
Based on the above structure, when parking is required, the parking mechanism is in a locked state, the claw 17 of the parking lever 11 swings to a side close to the parking disc 10, so that the claw 17 engages with the parking disc 10, the parking disc 10 is locked, the input shaft 8 stops rotating, and power cannot be output. When parking is not needed, the parking mechanism is in an unlocking state, the convex claw 17 swings to one side far away from the parking disc 10, so that the convex claw 17 is separated from the parking disc 10, and the input shaft 8 can rotate and input power. The parking rod 11 is structurally designed to adapt to the internal space of the existing differential case 1, the parking mechanism is arranged in the reducer case 1 on the premise of not changing the differential structure, the mechanical and software matching of the reducer assembly can be completed before the product leaves a factory, the automatic calibration matching of a control system and a mechanical system is performed without adding a process on a finished automobile assembly line, and the production cost is greatly reduced; because the parking mechanism is arranged in the reducer shell 1, the integration level is high, and the assembly and the subsequent maintenance are convenient.
Preferably, the diameter of the input gear 4 is smaller than that of the first driven gear 6, the diameter of the second driven gear 7 is smaller than that of the first driven gear 6, and the diameter of the second driven gear 7 is smaller than that of the output gear 9. The first driven gear 6 and the second driven gear 7 are arranged between the input gear 4 and the output gear 9 for gear transition, so that the gear ratio is effectively prevented from being too large, and the structure is prevented from being too large.
Preferably, the output shaft 8 is arranged on the right side of the driven shaft 5, the rotating shaft 12 is fixed on the reducer casing 1 and is positioned at the junction between the first driven gear 6 and the output gear 9, and the elastic abutting mechanism 14 is arranged on the reducer casing 1 and is positioned above the driven shaft 5. The middle of the parking rod 11 is rotatably arranged on the rotating shaft 12, the parking rod 11 comprises an extrusion section 18 matched with the elastic pressing mechanism 14 and an embedding section 19 matched with the parking disc 10 in an embedded mode, the extrusion section 18 is positioned above the left side of the embedding section 19, the extrusion section 18 and the embedding section 19 are arranged in an obtuse angle mode, the lower side of the left end of the extrusion section 18 is matched with the elastic pressing mechanism 14, and the convex claw 17 is arranged on the lower side of the right end of the embedding section 19; the position sensor 16 is arranged on the right side of the rotating shaft 12, the trigger piece 15 is of a rod-shaped structure, one end of the trigger piece 15 is fixed in the middle of the parking rod 11, the other end of the trigger piece 15 is matched with the position sensor 16, and the trigger piece 15 is positioned on the upper right of the embedding section 19.
The rotating shaft 12 is fixed on the speed reducer shell 1 and arranged at a gap between the upper part of the first driven gear 6 and the upper part of the output gear 9, the parking rod 11 is manufactured into an extrusion section 18 and an embedding section 19 which are arranged in an obtuse angle, the transverse occupied space of the parking rod is reduced, the parking mechanism can be arranged in the speed reducer without changing the structure of the speed reducer shell 1, and the production cost is reduced.
Preferably, the elastic pressing mechanism 14 includes a guide rod 20, the guide rod 20 moves along the length direction thereof, an extrusion block 21 is disposed on the guide rod 20, the matching portion between the extrusion block 21 and the parking rod 11 is in an inclined plane shape, a floating spring 22 is disposed between the extrusion block 21 and the guide rod 20, and the floating spring 22 provides an elastic force to drive the extrusion block 21 to move towards the parking rod 11 and to press the parking rod 11 to rotate towards the position close to the parking disc 10.
Preferably, the pressing block 21 includes a conical frustum portion 23 and a cylindrical portion 24, and the pressing block 21 is concentrically arranged with the guide rod 20.
Preferably, the parking rod 11 is provided with a slope platform 25 at the position matched with the extrusion block 21.
Preferably, a torsion spring mounting hole 26 is formed in the parking rod 11, the torsion spring 13 is sleeved on the rotating shaft 12 and is located between the parking rod 11 and the reducer casing 1, one end of the torsion spring 13 is fixed on the reducer casing 1, and the other end of the torsion spring is arranged in the torsion spring mounting hole 26.
Preferably, the input gear 4, the first driven gear 6, the second driven gear 7 and the output gear 9 are helical gears.
The electric automobile provided with the differential is provided with a P gear, and the position sensor 16 and the P gear are both connected with an ECU controller in the electric automobile. The ECU controller collects the motion condition of the automobile and the state data of the P gear, and when the automobile is in a moving state such as driving, slope sliding and the like, the P gear cannot be engaged under the control of the ECU controller; when the P gear is engaged, the automobile cannot run in an accelerated mode under the control of the ECU controller.
The utility model discloses can realize electric automobile's parking function, on the basis that does not change differential mechanism shell structure, install parking mechanism in reduction gear housing 1, the integrated level is high, also be convenient for assembly and follow-up maintenance, manufacturing cost is also lower.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (8)
1. The utility model provides a take electric automobile reduction gear of parking function, including retarder housing, with retarder housing complex speed reducer lid, has its characterized in that: an input gear set, a driven gear set, an output gear set and a parking mechanism are arranged in the speed reducer shell;
the input gear set comprises an input shaft and an input gear sleeved on the input shaft, the driven gear set comprises a driven shaft, a first driven gear and a second driven gear, the first driven gear and the second driven gear are sleeved on the driven shaft, the output gear set comprises an output shaft and an output gear, the output gear is sleeved on the output shaft, the first driven gear is meshed with the input gear, the second driven gear is meshed with the output gear, and an input shaft core, a driven shaft core and an output shaft core are parallel;
the parking mechanism comprises a parking disc, a parking rod, a rotating shaft, a torsion spring, an elastic abutting mechanism, a trigger piece and a position sensor; the parking disc is fixed on the driven shaft, the parking rod is hinged to the speed reducer shell through the rotating shaft, the shaft core of the rotating shaft is parallel to the shaft core of the input shaft, the parking rod is provided with a convex claw which is matched with the tooth groove area of the parking disc in an embedded mode, a torsion spring is arranged between the parking rod and the speed reducer shell, and the elastic abutting mechanism abuts against the parking rod to rotate towards the position close to the parking disc; the trigger piece is fixed on the parking rod and matched with the position sensor.
2. The electric vehicle retarder with parking function according to claim 1, characterized in that: the diameter of the input gear is smaller than that of the first driven gear, the diameter of the second driven gear is smaller than that of the first driven gear, and the diameter of the second driven gear is smaller than that of the output gear.
3. The electric vehicle retarder with parking function according to claim 2, characterized in that: the output shaft is arranged on the right side of the driven shaft; the rotating shaft is fixed on the speed reducer shell and is positioned at the junction above the first driven gear and the output gear, and the elastic abutting mechanism is arranged on the speed reducer shell and is positioned above the driven shaft; the middle of the parking rod is rotatably arranged on the rotating shaft, the parking rod comprises an extrusion section matched with the elastic pressing mechanism and an embedding section matched with the parking disc in an embedded mode, the extrusion section is positioned above the left side of the embedding section, the extrusion section and the embedding section are arranged in an obtuse angle mode, the lower side of the left end of the extrusion section is matched with the elastic pressing mechanism, and the convex claw is arranged on the lower side of the right end of the embedding section; the position sensor is arranged on the right side of the rotating shaft, the trigger piece is of a rod-shaped structure, one end of the trigger piece is fixed in the middle of the parking rod, the other end of the trigger piece is matched with the position sensor, and the trigger piece is positioned on the upper right of the embedding section.
4. The electric vehicle retarder with parking function according to claim 1, 2 or 3, characterized in that: the elastic abutting mechanism comprises a guide rod, the guide rod moves along the length direction of the guide rod, an extrusion block is arranged on the guide rod, the matching part of the extrusion block and the parking rod is in an inclined plane shape, a floating spring is arranged between the extrusion block and the guide rod, and the floating spring provides elastic force to drive the extrusion block to move towards the parking rod and extrude the parking rod to rotate towards the position close to the parking disc.
5. The electric vehicle retarder with parking function according to claim 4, characterized in that: the extrusion block comprises a conical table part and a cylindrical part, and the extrusion block and the guide rod are arranged in the same core.
6. The electric vehicle retarder with parking function according to claim 5, characterized in that: an inclined platform is arranged at the position, matched with the extrusion block, of the parking rod.
7. The electric vehicle retarder with parking function according to claim 1, 2, 3, 5 or 6, characterized in that: the parking rod is provided with a torsion spring mounting hole, the torsion spring is sleeved on the rotating shaft and is positioned between the parking rod and the reducer casing, one end of the torsion spring is fixed on the reducer casing, and the other end of the torsion spring is arranged in the torsion spring mounting hole.
8. The electric vehicle retarder with parking function according to claim 1, 2, 3, 5 or 6, characterized in that: the input gear, the first driven gear, the second driven gear and the output gear are helical gears.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920445601.1U CN210461548U (en) | 2019-04-03 | 2019-04-03 | Electric automobile speed reducer with parking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920445601.1U CN210461548U (en) | 2019-04-03 | 2019-04-03 | Electric automobile speed reducer with parking function |
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| Publication Number | Publication Date |
|---|---|
| CN210461548U true CN210461548U (en) | 2020-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920445601.1U Active CN210461548U (en) | 2019-04-03 | 2019-04-03 | Electric automobile speed reducer with parking function |
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| Country | Link |
|---|---|
| CN (1) | CN210461548U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112555407A (en) * | 2020-12-29 | 2021-03-26 | 派腾奥普科技服务（北京）有限公司 | Vehicle parking mechanism |
-
2019
- 2019-04-03 CN CN201920445601.1U patent/CN210461548U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112555407A (en) * | 2020-12-29 | 2021-03-26 | 派腾奥普科技服务（北京）有限公司 | Vehicle parking mechanism |
| CN112555407B (en) * | 2020-12-29 | 2022-06-10 | 南京朗禾智能控制研究院有限公司 | Vehicle parking mechanism |
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