CN117090924A - Planetary gear reduction box and motor vehicle - Google Patents
Planetary gear reduction box and motor vehicle Download PDFInfo
- Publication number
- CN117090924A CN117090924A CN202311255677.5A CN202311255677A CN117090924A CN 117090924 A CN117090924 A CN 117090924A CN 202311255677 A CN202311255677 A CN 202311255677A CN 117090924 A CN117090924 A CN 117090924A
- Authority
- CN
- China
- Prior art keywords
- oil
- chassis
- planetary gear
- retainer
- reduction box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000013459 approach Methods 0.000 claims 1
- 238000005461 lubrication Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 160
- 239000010687 lubricating oil Substances 0.000 description 19
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0482—Gearings with gears having orbital motion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention relates to the technical field of lubrication of reduction boxes and discloses a planetary gear reduction box and a motor vehicle, wherein the planetary gear reduction box comprises a shell, a gear ring arranged on the shell, a planet carrier rotationally connected with the shell, a sun gear arranged on the planet carrier and coaxially rotated with the planet carrier, and a planetary gear set rotationally connected with the planet carrier and meshed with the gear ring and the sun gear respectively; the first oil retainer is arranged on the outer periphery of the chassis and protrudes out of the plane of the chassis, so that the lubrication effect of the meshing area between the planetary gear and the gear ring is improved.
Description
Technical Field
The invention relates to the technical field of lubrication of speed reducers, in particular to a planetary gear speed reduction box and a motor vehicle.
Background
With the wider and wider application of new energy sources, new energy source motor vehicles such as electric motorcycles, electric automobiles and the like are becoming perfect from one step to another. The new energy motor vehicle integrates a driving motor, a planetary gear reducer, a motor input shaft, an output shaft and the like to form a centralized motor driving system. The driving motor can drive wheels through the motor input shaft, the reduction gearbox and the output shaft, and the planetary gear reduction gearbox plays a role in reducing the rotation speed and increasing the torque provided by the driving motor.
The planetary gear reduction box with the conventional structure comprises a shell, a planet carrier, a planet wheel, a sun wheel, a gear ring, a differential gear and the like, wherein the gear ring is fixed on the shell, the planet gear part and the differential gear part are arranged on the planet carrier and rotate along with the planet carrier, the planet gear part rotates around the sun wheel, and the sun wheel is connected with an input shaft of a driving motor to serve as a driving wheel, so that the meshing positions of the planet wheel, the sun wheel and the gear ring can be continuously changed. The planetary gear and the sun gear and the planetary gear and the gear ring are generally lubricated by adopting an oil stirring splashing method, but because the reduction gearbox is compact in structure and small in clearance between the structures, oil is difficult to pass through the clearance, and the gear meshing area, especially the meshing area of the planetary gear and the gear ring, is difficult to accurately lubricate, so that the lubrication effect is poor.
Disclosure of Invention
The invention mainly aims to provide a planetary gear reduction box, which aims to improve the lubrication effect on a gear meshing area.
In order to achieve the above object, the present invention provides a planetary gear reduction gearbox, including a housing, a ring gear provided in the housing, a planet carrier rotatably connected to the housing, a sun gear provided in the planet carrier and coaxially rotated with the planet carrier, and a planetary gear set rotatably connected to the planet carrier and respectively engaged with the ring gear and the sun gear, wherein the planetary gear reduction gearbox further includes an oil collecting disc, the oil collecting disc includes:
the chassis is provided with a mounting hole and a first oil guide hole close to the outer periphery, the chassis is mounted on the planet carrier through the mounting hole and rotates synchronously with the planet carrier, and the first oil guide hole corresponds to the meshing position of the planet wheel and the gear ring; and
the first oil retainer is arranged on the outer periphery of the chassis and protrudes out of the plane where the chassis is located.
Optionally, the chassis is formed with the first oil groove that leads of back to first oil retainer protrusion, first oil groove intercommunication first oil groove and along the mounting hole directional direction the direction slope of the outer peripheral edge of chassis sets up.
Optionally, the first oil retainer is inclined towards the mounting hole, and a first oil collecting flange is formed by shrinking one end of the first oil retainer, which is away from the chassis.
Optionally, the oil collecting disc further comprises a second oil retainer, and the chassis is further provided with a second oil guide hole;
the second oil retainer is arranged on the chassis and protrudes out of the plane where the chassis is located along the same direction with the first oil retainer, the second oil retainer is arranged between the mounting hole and the first oil retainer, the second oil guide hole is arranged on one side, facing away from the first oil retainer, of the second oil retainer and is close to the second oil retainer, and the second oil guide hole corresponds to the pin shaft of the planetary gear.
Optionally, the chassis is formed with a second oil guiding groove protruding away from the first oil retainer, and the second oil guiding groove is communicated with the second oil guiding hole.
Optionally, the second oil retainer has a second oil collecting flange and a deflector;
the second oil collecting flange is formed at one end of the second oil retainer, which is opposite to the chassis, and extends towards the mounting hole, the guide piece is connected with the side wall of the second oil retainer, which is opposite to the side wall of the first oil retainer, and the second oil collecting flange is opposite to the side wall of the chassis, and the guide piece is opposite to the second oil guide hole.
Optionally, the flow guiding piece is formed with the guide surface, the guide surface is connected the second oil collection flange with the inside wall of second oil retainer, the guide surface is in the guide piece with the one end that the oil collection flange is connected is directional the guide piece is kept away from the one end of second oil collection flange is close to gradually the axle center of second drainage hole.
Optionally, the oil collecting disc further comprises a connecting lock pin, and the connecting lock pin is arranged at one end of the first oil retainer, which faces to the chassis, and penetrates through the chassis to be clamped with the chassis.
Optionally, the planetary gear reduction box further comprises an oil supply structure, wherein an oil supply channel is formed in the oil supply structure, and an oil outlet of the oil supply channel corresponds to the chassis in the axial direction of the planet carrier.
The invention also provides a motor vehicle which comprises the planetary gear reduction box.
According to the technical scheme, the oil collecting disc is arranged on the planet carrier through the mounting hole formed in the chassis and rotates synchronously with the planet carrier, the first oil retainer is arranged on the outer periphery of the chassis and protrudes out of the plane where the chassis is located, lubricating oil in the oil collecting disc can move towards the edge of the chassis under the action of centrifugal force when the planet carrier rotates and is located at the outer edge of the chassis under the blocking of the first oil retainer, namely, the joint of the chassis and the first oil retainer, and the first oil guide hole is arranged close to the outer periphery of the chassis.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of a planetary gear reducer according to the present invention;
FIG. 2 is a schematic view of a portion of the structure of FIG. 1 at a first viewing angle;
FIG. 3 is a schematic diagram of the structure of FIG. 2 at a second view angle;
fig. 4 is a schematic cross-sectional view of the structure of fig. 2.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The present invention proposes a planetary gear reducer, and fig. 1 to 4 are an embodiment of the present invention.
In the embodiment of the present invention, as shown in fig. 1 to 4, the planetary gear reducer comprises a housing, a gear ring 2 arranged on the housing, a planet carrier 3 rotatably connected with the housing, a sun gear 4 arranged on the planet carrier 3 and coaxially rotating with the planet carrier 3, and a planetary gear set 1 rotatably connected with the planet carrier 3 and respectively meshed with the gear ring 2 and the sun gear 4, wherein the planetary gear reducer 1000 further comprises an oil collecting disc 5, the oil collecting disc 5 comprises a chassis 51 and a first oil retainer 52, the chassis 51 is provided with a mounting hole 511 and a first oil guide hole 512 near the outer periphery, the chassis 51 is mounted on the planet carrier 3 through the mounting hole 511 and synchronously rotates with the planet carrier 3, and the first oil guide hole 512 corresponds to a meshing area of the planet gears and the gear ring 2; the first oil retainer 52 is disposed at the outer periphery of the chassis 51 and protrudes out of the plane of the chassis 51.
In the technical scheme of the invention, the oil collecting disc 5 is arranged on the planet carrier 3 through the mounting hole 511 formed in the chassis 51 and rotates synchronously with the planet carrier 3, the first oil retainer 52 is arranged on the outer periphery of the chassis 51 and protrudes out of the plane of the chassis 51, when the planet carrier 3 rotates, lubricating oil in the oil collecting disc 5 moves towards the edge of the chassis 51 under the action of centrifugal force, and is positioned on the outer edge of the chassis 51 under the blocking of the first oil retainer 52, namely, the connection part of the chassis 51 and the first oil retainer 52, and the first oil guide hole 512 is arranged close to the outer periphery of the chassis 51, when the planet carrier 3 rotates, the lubricating oil is continuously discharged from the first oil guide hole 512 under the action of the centrifugal force, so that the meshing part between the planet gear and the gear ring 2 is continuously and accurately lubricated, and the lubricating effect on the meshing part between the planet gear and the gear ring 2 is improved.
In general, the meshing area of the planet gears and the ring gear 2 has exceeded the outer periphery of the planet carrier 3, if the first oil guiding hole 512 is opposite to the aforementioned meshing area, the size of the planetary gear reduction box 1000 is slightly increased to accommodate the installation of the first oil retainer 52, which leads to an increase in design cost, in order to ensure that the lubricating oil can be accurately discharged from the first oil guiding hole 512 to the meshing area of the planet gears and the ring gear 2, and to avoid affecting the size of the planetary gear reduction box 1000, in an embodiment, the chassis 51 is formed with a first oil guiding groove 513 protruding away from the first oil retainer 52, the first oil guiding groove 513 communicating with the first oil guiding hole 512 and being obliquely arranged in a direction in which the installation hole 511 points to the outer periphery of the chassis 51; on the one hand, the first oil guiding groove 513 is equivalent to lengthening the outlet of the lubricating oil, so that the position of the lubricating oil discharged from the oil collecting disc 5 is closer to the engagement area, the splashing loss of the lubricating oil caused by centrifugal force can be reduced, on the other hand, the first oil guiding groove 513 is obliquely arranged, so that the position of the first oil outlet is designed to be closer to the center, the radius of the first oil retainer 52 can be reduced to a certain extent, and only the tail end of the first oil guiding groove 513 is just opposite to the engagement area.
In an embodiment, the first oil retainer 52 is inclined towards the mounting hole 511, a first oil collecting flange 521 is formed by shrinking an end of the first oil retainer 52 facing away from the chassis 51, the first oil collecting flange 521 is used for preventing lubricating oil from being thrown out from an end of the first oil retainer 52 facing away from the chassis 51 under high-speed rotation of the planet carrier 3, the inclined design can enable the lubricating oil to accelerate to flow to the first oil guide hole 512 when moving along the inner side of the inclined plane under the action of centrifugal force, and the inclined design of the first oil retainer 52 can effectively reduce the overall envelope size of the oil collecting disc 5, reserve more operable space for the structural design of the planetary gear reducer and increase the applicable scene.
To lubricate the planetary pin shaft 7, in an embodiment, the oil collecting disc 5 further includes a second oil retainer 53, the chassis 51 is further formed with a second oil guiding hole 514, the second oil retainer 53 is disposed on the chassis 51 and protrudes from the plane of the chassis 51 along the same direction as the first oil retainer 52, the second oil retainer 53 is disposed between the mounting hole 511 and the first oil retainer 52, the second oil guiding hole 514 is disposed on a side of the second oil retainer 53 facing away from the first oil retainer 52 and close to the second oil retainer 53, the second oil guiding hole 514 corresponds to the planetary pin shaft 7, and when the planet carrier 3 rotates, the second oil retainer 53 blocks the lubricating oil in the area of the chassis 51 between the mounting hole 511 and the second oil retainer 53, and causes the lubricating oil to be guided out onto the planetary pin shaft 7 through the second oil guiding hole 514 disposed close to the second oil retainer 53.
In order to improve the accuracy of the second oil guiding hole 514 guiding the lubricating oil to the planetary gear pin shaft, the chassis 51 is formed with a second oil guiding groove 515 protruding away from the first oil retainer 52, the second oil guiding groove 515 is communicated with the second oil guiding hole 514, the second oil guiding groove 515 is equivalent to reducing the distance between the second oil guiding hole 514 and the planetary gear pin shaft, the influence of centrifugal force when the lubricating oil is discharged is reduced, and the oil quantity of the lubricating oil which can accurately reach the planetary gear pin shaft is improved.
To facilitate the collection of the lubricating oil into the second deflector hole, in one embodiment, the second oil retainer 53 has a second oil collecting flange 531 and a deflector 532, the second oil collecting flange 531 is formed at an end of the second oil retainer 53 facing away from the bottom plate 51 and extends toward the mounting hole 511, the deflector 532 connects a sidewall of the second oil retainer 53 facing away from the first oil retainer 52 and a sidewall of the second oil collecting flange 531 facing toward the bottom plate 51, and the deflector 532 is opposite to the second oil guiding hole 514; the second oil collecting flange 531 can prevent the lubricating oil from being thrown out from the end of the second oil retainer 53 facing away from the chassis 51 when the planet carrier 3 rotates at a high speed, and the guide piece 532 connects the side wall of the second oil retainer 53 facing away from the first oil retainer 52 and the side wall of the second oil collecting flange 531 facing toward the chassis 51, so that the lubricating oil on the side wall of the second oil retainer 53 and the second oil collecting flange 531 can be accurately guided into the second oil guide hole 514.
To specifically realize the flow guiding function of the flow guiding member 532, in an embodiment, the flow guiding member 532 is formed with a flow guiding surface, the flow guiding surface is connected with the second oil collecting flange 531 and the inner side wall of the second oil retainer 53, and the flow guiding surface is at one end of the flow guiding member 532 connected with the oil collecting flange, which is pointed to one end of the flow guiding member 532 away from the second oil collecting flange 531, is gradually close to the axis of the second flow guiding hole, so that lubricating oil is guided to enter the flow guiding hole by the flow guiding surface. The specific shape of the flow guiding member 532 is not limited, and a flow guiding surface that connects the second oil collecting flange 531 and the inner side wall of the second oil retainer 53 at the same time may be formed, and the flow guiding surface is preferably smoothly connected to the second oil collecting flange 531 and the inner side wall of the second oil retainer 53, so as to obtain higher oil collecting efficiency. In this embodiment, the flow guiding member 532 is approximately a triangular prism, one side surface of the flow guiding member 532 is connected to the second oil collecting flange 531, one bottom surface is connected to the inner side wall of the second oil retainer 53, and the other two side surfaces are respectively used as two flow guiding surfaces, which respectively guide the flow when the planet carrier 3 rotates along two different rotation directions.
Wherein the deflector 532 may be provided between the first oil collecting flange 521 and the inner side wall of the first oil deflector 52, if necessary.
In order to realize the mounting and fixing of the first oil retainer 52 on the chassis 51, in an embodiment, the oil collecting disc 5 further includes a connecting lock pin 54, where the connecting lock pin 54 is disposed at one end of the first oil retainer 52 facing the chassis 51 and passes through the chassis 51 to be clamped with the chassis 51, so as to realize the mounting and fixing of the first oil retainer 52 on the chassis 51. The specific structure of the connecting lock pin 54 includes three elastic pins circumferentially arranged, the three elastic pins are spaced from each other, and the ends of the three elastic pins are respectively formed with a limiting protrusion, when the connecting lock pin 54 passes through the chassis 51, the three elastic pins are close to each other, so that the limiting protrusions are close to each other, the outer circle radius formed by each limiting protrusion is reduced, so as to pass through the chassis 51, and after passing through, the elastic pins are mutually separated under the action of elastic force, so that the outer circle radius of each limiting protrusion is increased, and the limiting protrusions are locked on the chassis 51. Wherein, the second oil retainer 53 is connected and locked with the first oil retainer 52 in the same way.
In order to supply lubricating oil to the oil collecting disc 5, in an embodiment, the planetary gear reduction box 1000 further includes an oil supply structure 6, where the oil supply structure 6 is used to externally connect with oil delivery equipment, and the oil supply structure 6 is formed with an oil supply channel, and an oil outlet of the oil supply channel corresponds to the chassis 51 in an axial direction of the planet carrier 3. More specifically, the oil supply passage has two oil outlets corresponding to the region of the oil collecting pan 5 between the first and second slingers 53 and the region between the second slinger 53 and the mounting hole 511, respectively, to achieve simultaneous oil supply to the two regions, respectively, while lubricating the meshing regions of the pinion and the ring gear 2 and the pinion pin.
The invention also provides a motor vehicle, which comprises the planetary gear reduction box 1000, and the specific structure of the planetary gear reduction box 1000 refers to the above embodiments, and because the motor vehicle adopts all the technical schemes of all the embodiments, the motor vehicle at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (10)
1. The utility model provides a planetary gear reduction box, includes the casing, locates the ring gear of casing, rotates to connect the planet carrier of casing, locate the planet carrier and with the coaxial pivoted sun gear of planet carrier and rotate to connect the planet carrier and respectively with ring gear with the planetary gear set of meshing of sun gear, planetary gear set includes at least two-stage planetary gear, its characterized in that, planetary gear reduction box still includes the oil collecting tray, the oil collecting tray includes:
the chassis is provided with a mounting hole and a first oil guide hole close to the outer periphery, the chassis is mounted on the planet carrier through the mounting hole and rotates synchronously with the planet carrier, and the first oil guide hole corresponds to the meshing position of the planet wheel and the gear ring; and
the first oil retainer is arranged on the outer periphery of the chassis and protrudes out of the plane where the chassis is located.
2. The planetary gear reduction box according to claim 1, wherein the chassis is formed with a first oil guiding groove protruding away from the first oil retainer, and the first oil guiding groove communicates with the first oil guiding hole and is disposed obliquely in a direction in which the mounting hole is directed toward an outer peripheral edge of the chassis.
3. A planetary gear reduction box according to claim 1 or 2, wherein the first oil retainer is inclined towards the mounting hole, and a first oil collecting flange is formed by shrinkage of one end of the first oil retainer facing away from the chassis.
4. The planetary gear reduction box according to claim 1 or 2, wherein the oil collecting pan further includes a second oil retainer, and the chassis is further formed with a second oil guide hole;
the second oil retainer is arranged on the chassis and protrudes out of the plane where the chassis is located along the same direction with the first oil retainer, the second oil retainer is arranged between the mounting hole and the first oil retainer, the second oil guide hole is arranged on one side, facing away from the first oil retainer, of the second oil retainer and is close to the second oil retainer, and the second oil guide hole corresponds to the pin shaft of the planetary gear.
5. The planetary gear reduction box according to claim 4, wherein the chassis is formed with a second oil guide groove protruding away from the first oil retainer, the second oil guide groove communicating with the second oil guide hole.
6. The planetary gear reducer of claim 4, wherein said second oil retainer has a second oil collection flange and a deflector;
the second oil collecting flange is formed at one end of the second oil retainer, which is opposite to the chassis, and extends towards the mounting hole, the guide piece is connected with the side wall of the second oil retainer, which is opposite to the side wall of the first oil retainer, and the second oil collecting flange is opposite to the side wall of the chassis, and the guide piece is opposite to the second oil guide hole.
7. The planetary gear reduction box according to claim 6, wherein the deflector is formed with a deflector surface connecting the second oil collecting flange and an inner side wall of the second oil retainer, and the deflector surface gradually approaches an axial center of the second deflector hole at an end of the deflector, which is connected with the oil collecting flange, toward an end of the deflector, which is away from the second oil collecting flange.
8. The planetary reduction gearbox of claim 1 or 2, wherein the oil collection tray further comprises a connecting lock pin, and the connecting lock pin is arranged at one end of the first oil retainer, which is towards the chassis, and penetrates through the chassis to be clamped with the chassis.
9. A planetary gear reduction box according to claim 1 or 2, characterized in that the planetary gear reduction box further comprises an oil supply structure formed with an oil supply passage, an oil outlet of which corresponds to the chassis in the axial direction of the carrier.
10. A motor vehicle comprising a planetary gear reduction box according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311255677.5A CN117090924A (en) | 2023-09-26 | 2023-09-26 | Planetary gear reduction box and motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311255677.5A CN117090924A (en) | 2023-09-26 | 2023-09-26 | Planetary gear reduction box and motor vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117090924A true CN117090924A (en) | 2023-11-21 |
Family
ID=88773603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311255677.5A Pending CN117090924A (en) | 2023-09-26 | 2023-09-26 | Planetary gear reduction box and motor vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117090924A (en) |
-
2023
- 2023-09-26 CN CN202311255677.5A patent/CN117090924A/en active Pending
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