CN220551453U - Differential mechanism planet row gear shifting structure - Google Patents
Differential mechanism planet row gear shifting structure Download PDFInfo
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- CN220551453U CN220551453U CN202320504349.3U CN202320504349U CN220551453U CN 220551453 U CN220551453 U CN 220551453U CN 202320504349 U CN202320504349 U CN 202320504349U CN 220551453 U CN220551453 U CN 220551453U
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- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 230000010354 integration Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 206010039722 scoliosis Diseases 0.000 description 1
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Abstract
The utility model provides a differential planetary gear shift structure, which is provided with an integrated gear shift gear sleeve, effectively converts the bearing form of load and has small volume, so that the whole structure effectively bears torque impact caused by differential gear shift. It comprises the following steps: a main subtracting gear; an input shaft; a transmission housing; the integrated gear shifting tooth sleeve comprises an annular connecting part and two side convex connecting ends, wherein a positioning ring groove structure is arranged at the center of the thickness direction of the annular connecting part, connecting splines are annularly distributed on the periphery of the inner side of the axial direction of the annular connecting part, and connecting holes penetrating through the side convex connecting ends are formed; a differential; a planet carrier comprising an inner cavity portion, an axial guiding portion; and a planet row gear ring.
Description
Technical Field
The utility model relates to the technical field of differential mechanism structures, in particular to a differential mechanism planetary gear shift structure.
Background
The integration and the high efficiency are the necessary trend of the development of the automobile electric drive system, and the torque ratio and the space utilization rate can be effectively improved by arranging the secondary box structure of two gears at the position of the differential mechanism. The planetary gear structure is compact in structure, high in transmission efficiency, stable in operation and high in impact resistance, and is an ideal scheme for gear shifting of the differential mechanism. The conventional structure on site is a single-row two-gear planetary gear structure, wherein one gear needs to be fixedly connected with the shell, but when the gear shifting structure is installed, the space of the axle housing is small, and the gear shifting torque of the auxiliary box is large, so that high requirements are put on the design of the gear shifting structure. The differential mechanism part of current structure is located the bridge, and the space is less, but for realizing the low grade, differential mechanism part is located the bridge, and the space is less, but for realizing the low grade, planet row ring gear and derailleur casing must link firmly, and the moment of torsion that the planet row ring gear bore when hanging to keep out, the derailleur casing also bears, and current direct rigidity is alleviated the structure and is required high to the rigidity of derailleur casing, and the derailleur casing is fragile, and for this reason it is highly desirable to develop a differential mechanism planet row shift structure that can satisfy the little space reliable of load conversion and shift.
Disclosure of Invention
In order to solve the problems, the utility model provides a differential planetary gear shift structure, which is provided with an integrated gear shift gear sleeve, effectively converts the bearing form of load and has small volume, so that the whole structure effectively bears torque impact caused by differential gear shift.
A differential planet row shift structure, comprising:
a main subtracting gear;
an input shaft;
a transmission housing;
the integrated gear shifting tooth sleeve comprises an annular connecting part and two side convex connecting ends, wherein a positioning ring groove structure is arranged at the center of the thickness direction of the annular connecting part, connecting splines are annularly distributed on the periphery of the inner side of the axial direction of the annular connecting part, and connecting holes penetrating through the side convex connecting ends are formed;
a differential;
a planet carrier comprising an inner cavity portion, an axial guiding portion;
a planet row ring gear;
the input end of the differential mechanism is provided with a raised input shaft, the planet carrier is fixedly arranged on one side of the input shaft of the differential mechanism, a sun gear is sleeved at the position of the input shaft penetrating through the planet carrier, a plurality of planet gears are annularly distributed in an inner cavity part of the planet carrier, a planet row gear ring is arranged on the outer circumference of the inner cavity part of the planet carrier through a bearing, a laterally raised gear ring gear shifting tooth sleeve is fixedly arranged on one side of the planet row gear ring, laterally raised high-grade combined teeth are arranged on the inner ring of the inner cavity part of the planet carrier, which corresponds to the gear ring gear shifting tooth sleeve, an annular space is reserved between the gear ring gear shifting tooth sleeve and the high-grade combined teeth, a gear shifting sliding sleeve is arranged in the annular space, an outer tooth ring of the gear shifting sliding sleeve is meshed with the gear ring gear shifting tooth sleeve, the inner side of an inner tooth ring of the gear shifting ring sleeve is meshed with/is separated from the high-grade combined teeth, and the gear shifting ring sleeve axially moves along the input shaft to shift;
the positioning ring groove structure of the integrated gear shifting tooth sleeve is sleeved on the outer ring periphery of the axial guiding part through a bearing, and the connecting spline is meshed with and/or separated from the outer side of the inner gear ring of the gear shifting sliding sleeve;
the fastener penetrates through the connecting hole and is fixedly connected with the transmission shell;
the main reducing gear is sleeved at the outer end of the input shaft.
It is further characterized by:
the main gear reducing bearings are fixedly sleeved at the two ends of the rear end of the input shaft respectively, so that the axial position of the main gear reducing is ensured to be stable and reliable;
the planet carrier support bearing is fixedly sleeved on the outer ring surface of the axial guide part, the positioning ring groove structure is provided with a corresponding positioning ring groove at the position corresponding to the inner main gear reduction bearing and the planet support bearing, the integrated gear sleeve is sleeved at the outer ring positions of the corresponding main gear reduction bearing and the planet support bearing respectively, the stable and reliable installation of the integrated gear sleeve is ensured, and the integrated gear sleeve covers the axial guide part and the inner main gear reduction bearing, so that the integrated gear sleeve shields the entering channel of external dust;
the sleeve part of the sun gear is fixedly sleeved and connected with the input shaft through the connecting spline sleeve, so that the rapid and convenient assembly is ensured.
After the utility model is adopted, the integrated gear shifting sleeve directly bears the torque of the planetary gear ring, the self structure is utilized to convert the torque load into the surface load, and then the surface load is borne by the transmission shell fixedly connected with the self structure, so that the bearing form of the load is effectively converted; the integrated gear shifting tooth sleeve is small in size and simultaneously is connected with the planetary gear, the main reduction gear and the differential mechanism, the integration degree is high, and the bearing is maximum, so that the integrated gear shifting tooth sleeve is made of high-strength materials, and meanwhile, other parts such as a transmission shell and the like can be made of parts with common strength, so that the cost of the assembly is reduced; the integrated gear shifting sleeve is arranged, the bearing form of the load is effectively converted, and the integrated gear shifting sleeve is small in size, so that the integral structure effectively bears torque impact caused by gear shifting of the differential mechanism.
Drawings
FIG. 1 is a front view cross-section of the present utility model;
FIG. 2 is a side elevation cross-sectional view of the present utility model;
FIG. 3 is a schematic perspective view of the integrated shift sleeve of the present utility model;
the names corresponding to the serial numbers in the figures are as follows:
the main reduction gear 10, the input shaft 20, the transmission housing 30, the integrated shift sleeve 40, the annular connection 41, the scoliosis connection 42, the connection spline 43, the connection hole 44, the positioning ring groove structure 45, the differential 50, the planet carrier 60, the inner cavity portion 61, the axial guiding portion 62, the planet row ring gear 70, the sun gear 80, the planet gears 90, the connection spline sleeve 100, the ring gear shift sleeve 110, the top gear coupling teeth 120, the shift sleeve 130, the dowel 140, the stud assembly 150, the main reduction gear bearing 160, the planet carrier support bearing 170.
Detailed Description
1-3, the differential planetary gear shift structure comprises a main reducing gear 10, an input shaft 20, a transmission shell 30, an integrated gear shift gear sleeve 40, a differential 50, a planetary carrier 60 and a planetary gear ring 70;
the integrated gear shifting tooth sleeve 40 comprises an annular connecting part 41 and two end side convex connecting ends 42, a positioning ring groove structure 45 is arranged at the center of the thickness direction of the annular connecting part 41, connecting splines 43 are annularly distributed on the periphery of the inner side of the axial direction of the annular connecting part 41, and a connecting hole 44 penetrating through the side convex connecting ends 42 is formed;
the planet carrier 60 comprises an inner cavity portion 61, an axial guiding portion 62;
the input end of the differential mechanism 50 is provided with a convex input shaft 20, the planet carrier 60 is fixedly arranged on one side of the input shaft 20 of the differential mechanism 50, a sun gear 80 is sleeved at the position of the input shaft 50 penetrating through the planet carrier 60, a plurality of planet gears 90 are annularly distributed in an inner cavity part of the planet carrier 60, a planet row gear ring 70 is arranged on the outer circumference of the inner cavity part of the planet carrier 60 through a bearing, a side convex gear ring gear shifting tooth sleeve 110 is fixedly arranged on one side of the planet row gear ring 70, a side convex high-grade combined tooth 120 is arranged on the inner ring of the inner cavity part 61 of the planet carrier 60, which corresponds to the gear ring gear shifting tooth sleeve 110, an annular space is reserved between the gear ring gear shifting tooth sleeve 110 and the high-grade combined tooth 120, a gear shifting sliding sleeve 130 is arranged in the annular space, an outer tooth ring 131 of the gear shifting sliding sleeve 130 is meshed with the gear ring gear shifting tooth sleeve 110, and the inner side of an inner tooth ring 132 of the gear shifting ring 130 is meshed with/separated from the high-grade combined tooth 120, and the gear shifting ring sleeve 130 moves axially along the input shaft 20 to shift gears;
the positioning ring groove structure of the integrated gear shifting tooth sleeve 40 is sleeved on the outer circumference of the axial guiding part 62 through a bearing, and the connecting spline is meshed with or separated from the outer side of the inner gear ring of the gear shifting sliding sleeve 130;
the fastener penetrates through the connecting hole 44 and is fixedly connected to the transmission shell 30; the main reducing gear 10 is sleeved on the outer end of the input shaft 20, and the main reducing gear 10 is used for power input.
In specific implementation, the integrated gear shifting sleeve 40 is positioned through the positioning pin 140 and the transmission shell 30, the fastening piece is the double-end stud assembly 150, the double-end stud assembly 150 is arranged on the transmission shell 30 in a bearing manner, and the double-nut double-end stud connection mode can be well adapted to the vibration of the automobile chassis transferred by the external axle housing and can also effectively bear the torque impact caused by the gear shifting of the differential;
the planet row gear ring 70 is connected with the gear ring gear shifting sleeve 110 through a spline, the gear shifting sliding sleeve 130 is connected with the gear ring gear shifting sleeve 110 through the same spline and can slide on the gear shifting sleeve, the gear shifting sliding sleeve slides leftwards in fig. 1, the gear shifting sliding sleeve 130 is fixedly connected with the integrated gear shifting sleeve 40 through the spline, the rotation speed of the planet row gear ring 70 is fixedly connected with the transmission shell 30 to be zero, and the planet row is in a low gear; the gear shifting sliding sleeve 130 is fixedly connected with the high-gear combining teeth 120 through a spline, so that the planet gear ring 70 is fixedly connected with the planet carrier 60, and the planet gear is in a high gear; the position shown in fig. 1 is with the planet row in neutral;
the main reducing gear 10 is fixedly sleeved on the rear two ends of the input shaft 20, and main reducing gear bearings 160 are respectively fixedly sleeved on the rear two ends of the input shaft, so that the axial position of the main reducing gear 10 is ensured to be stable and reliable;
the planet carrier support bearing 170 is fixedly sleeved on the outer ring surface of the axial guide part 92, corresponding positioning ring grooves are formed in the positions of the positioning ring groove structures 45 corresponding to the inner main gear reduction bearing 160 and the planet support bearing 170, the integrated sliding gear sleeve 40 is sleeved on the outer ring positions of the corresponding main gear reduction bearing 160 and the planet support bearing 170 respectively, the stable and reliable installation of the integrated sliding gear sleeve 40 is ensured, and the integrated sliding gear sleeve 40 covers the axial guide part 92 and the inner main gear reduction bearing 160 and shields an entering channel of external dust; in fig. 1, the left end of the inner side of the integrated gear shifting sleeve 40 provides a supporting and positioning function for the main gear reduction bearing 160, the right end of the inner side provides a supporting and positioning function for the planet carrier supporting bearing 170, the outer side is provided with a connecting spline 43, and the connecting spline is connected with the gear shifting sliding sleeve 130 during gear shifting to bear corresponding bearing load and gear shifting load, which is a core component of the patent;
the sleeve portion 81 of the sun gear 80 is fixedly coupled to the input shaft 20 by the coupling spline housing 100, ensuring quick and convenient assembly.
The working principle is that the integrated gear shifting sleeve directly bears the torque of the planetary gear ring, the self structure is utilized to convert the torque load into the surface load, and then the surface load is borne by the transmission shell fixedly connected with the integrated gear shifting sleeve, so that the bearing form of the load is effectively converted; the integrated gear shifting tooth sleeve is small in size and simultaneously is connected with the planetary gear, the main reduction gear and the differential mechanism, the integration degree is high, and the bearing is maximum, so that the integrated gear shifting tooth sleeve is made of high-strength materials, and meanwhile, other parts such as a transmission shell and the like can be made of parts with common strength, so that the cost of the assembly is reduced; the integrated gear shifting sleeve is arranged, the bearing form of the load is effectively converted, and the integrated gear shifting sleeve is small in size, so that the integral structure effectively bears torque impact caused by gear shifting of the differential mechanism.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (4)
1. A differential planet row shift structure, comprising:
a main subtracting gear;
an input shaft;
a transmission housing;
the integrated gear shifting tooth sleeve comprises an annular connecting part and two side convex connecting ends, wherein a positioning ring groove structure is arranged at the center of the thickness direction of the annular connecting part, connecting splines are annularly distributed on the periphery of the inner side of the axial direction of the annular connecting part, and connecting holes penetrating through the side convex connecting ends are formed;
a differential;
a planet carrier comprising an inner cavity portion, an axial guiding portion;
a planet row ring gear;
the input end of the differential mechanism is provided with a raised input shaft, the planet carrier is fixedly arranged on one side of the input shaft of the differential mechanism, a sun gear is sleeved at the position of the input shaft penetrating through the planet carrier, a plurality of planet gears are annularly distributed in an inner cavity part of the planet carrier, a planet row gear ring is arranged on the outer circumference of the inner cavity part of the planet carrier through a bearing, a laterally raised gear ring gear shifting tooth sleeve is fixedly arranged on one side of the planet row gear ring, laterally raised high-grade combined teeth are arranged on the inner ring of the inner cavity part of the planet carrier, which corresponds to the gear ring gear shifting tooth sleeve, an annular space is reserved between the gear ring gear shifting tooth sleeve and the high-grade combined teeth, a gear shifting sliding sleeve is arranged in the annular space, an outer tooth ring of the gear shifting sliding sleeve is meshed with the gear ring gear shifting tooth sleeve, the inner side of an inner tooth ring of the gear shifting sliding sleeve is meshed with/separated from the high-grade combined teeth, and the gear shifting sliding sleeve axially moves along the input shaft to shift;
the positioning ring groove structure of the integrated gear shifting tooth sleeve is sleeved on the outer ring periphery of the axial guiding part through a bearing, and the connecting spline is meshed with and/or separated from the outer side of the inner gear ring of the gear shifting sliding sleeve;
the fastener penetrates through the connecting hole and is fixedly connected with the transmission shell;
the main reducing gear is sleeved at the outer end of the input shaft.
2. A differential planet row shift structure as claimed in claim 1, wherein: the main gear reducing bearings are fixedly sleeved at the two ends of the rear end of the input shaft respectively.
3. A differential planet row shift structure as claimed in claim 2, wherein: the planet carrier support bearing is fixedly sleeved on the outer ring surface of the axial guide part, the corresponding positioning ring grooves are formed in the positions of the positioning ring groove structures corresponding to the inner main gear reduction bearing and the planet support bearing, and the integrated gear shifting sleeve is sleeved on the outer ring positions of the corresponding main gear reduction bearing and the corresponding planet support bearing respectively.
4. A differential planet row shift structure as claimed in claim 1, wherein: the sleeve part of the sun gear is fixedly sleeved and connected with the input shaft through a connecting spline sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320504349.3U CN220551453U (en) | 2023-03-16 | 2023-03-16 | Differential mechanism planet row gear shifting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320504349.3U CN220551453U (en) | 2023-03-16 | 2023-03-16 | Differential mechanism planet row gear shifting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220551453U true CN220551453U (en) | 2024-03-01 |
Family
ID=90005263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320504349.3U Active CN220551453U (en) | 2023-03-16 | 2023-03-16 | Differential mechanism planet row gear shifting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220551453U (en) |
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2023
- 2023-03-16 CN CN202320504349.3U patent/CN220551453U/en active Active
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