Horizontally-placed automobile differential mechanism
By placing the differential horizontally above the half-shaft and using a flat arrangement of reduction gears and planetary gear mechanisms, the problem of large space occupation by traditional differentials is solved, achieving greater loading space and efficient power output.
Patent Information
- Application Number
- CN202520625179.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-04-03
AI Technical Summary
Traditional differential components occupy a large amount of space above and below the drive axle, affecting the vehicle's loading space and passability.
Design a horizontally placed automotive differential, with the differential mounted above the half-shaft, and the reduction gear and planetary gear mechanism arranged in a flat position to reduce vertical space occupation, and achieve differential function through the planetary gear mechanism.
It increases the interior loading space of the car, improves the structural compactness and stability of the differential, reduces space occupation, and improves power output efficiency.
Smart Images
Figure CN223806574U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to vehicle differential mechanism technical field, especially a horizontal placement formula automobile differential mechanism. BACKGROUND
[0002] Differential mechanism is a kind of mechanism that can make left and right drive wheels rotate at different speeds, mainly composed of left and right half shaft gears, planetary gears and planetary gear mechanisms.When the car turns or drives on uneven road, differential mechanism can make left and right wheels roll at different speeds, that is, ensure that both sides of the drive wheel make pure rolling motion.Specifically, the working principle of differential mechanism is based on its internal planetary gear system, when the car drives straight, the rotation speed of left and right wheels and planetary gear carrier is equal, in equilibrium state.But when the car turns or drives on uneven road, planetary gear system starts to work, allowing the inside and outside wheels to rotate at different speeds, so as to make up for the difference in distance at different speeds.
[0003] The differential mechanism of the car will bulge into a large spherical structure, the most common one is the rear drive axle of truck, commonly known as rear tooth package.The tooth package is connected with the transmission shaft and wheel half shaft, and the existing differential mechanism structure determines that the main reduction gear must be installed vertically to the wheel half shaft, and the larger the speed ratio, the larger the diameter of the reduction gear.This results in the larger the tooth package of the drive axle bulges up and down.The upward protruding part of the tooth package affects the loading space of the car, and the downward protruding part affects the passability of the car, so a horizontal placement type automobile differential mechanism is needed to solve the problem of large space occupied by traditional differential mechanism components on the drive axle. UTILITY MODEL CONTENTS
[0004] The purpose of the utility model is to solve the problem of large space occupied by traditional differential mechanism components on the drive axle, by rearranging and designing the automobile differential mechanism, so that the differential mechanism is horizontally placed, and the differential mechanism is installed above the half shaft, that is, the upward and downward protruding parts are changed into front and rear protruding parts, to solve the problem of large space occupied by traditional differential mechanism components on the drive axle.
[0005] In order to achieve the above purpose, the utility model adopts the technical scheme of a horizontal placement type automobile differential mechanism, which comprises a shell and a half shaft, a driving gear is arranged in the shell, the driving gear is engaged with a reduction gear, when the differential mechanism is horizontally placed, the axial direction of the reduction gear is perpendicular to the horizontal plane, a planetary gear mechanism is arranged on the lower end surface of the reduction gear, the axial direction of the planetary gear mechanism is also perpendicular to the horizontal plane, the planetary gear mechanism is arranged above the half shaft, the sun gear in the planetary gear mechanism is used to drive one side of the half shaft to rotate, and the outer ring gear in the planetary gear mechanism is used to drive the other side of the half shaft to rotate.
[0006] The working principle is that firstly, the transmission shaft of the automobile transmits power to the driving gear, the driving gear drives the reduction gear, so that the reduction and the increase of the torque are realized, the axial direction of the reduction gear is perpendicular to the horizontal plane, so that the reduction gear and the planetary gear mechanism arranged at the lower end of the reduction gear are horizontally arranged and placed, and are arranged above the half shaft, so that the vertical arrangement space is reduced, and the loading space in the automobile is increased; then the reduction gear drives the horizontally arranged and placed planetary gear mechanism to rotate, the sun gear in the planetary gear mechanism drives one side half shaft to rotate, the outer ring gear in the planetary gear mechanism drives the other side half shaft to rotate, so that the differential function of the two half shafts controlled by the differential mechanism is realized, and the power is output by the half shaft.
[0007] As the preferred scheme of the utility model, the sun gear is coaxially fixedly connected with the first half shaft driving gear, the first half shaft driving gear is in meshing connection with the first half shaft passive gear, the outer ring gear is coaxially fixedly connected with the second half shaft driving gear, and the second half shaft driving gear is in meshing connection with the second half shaft passive gear. When the automobile normally travels, due to the principle of the planetary gear mechanism, the sun gear drives the first half shaft driving gear to rotate, the first half shaft driving gear drives the first half shaft passive gear to rotate, so that the power output of one side half shaft is realized, at this time, the outer ring gear drives the second half shaft driving gear to rotate, the second half shaft driving gear drives the second half shaft passive gear to rotate, so that the power output of the other side half shaft is realized.
[0008] As the preferred scheme of the utility model, the reduction gear, the sun gear, the outer ring gear, the first half shaft driving gear and the second half shaft driving gear are arranged on the same intermediate shaft, and the intermediate shaft is in free rotation connection with the housing. The differential lock structure is compact, good in stability, can save space, and the cooperation efficiency among the gears is high.
[0009] As the preferred scheme of the utility model, the reduction gear is in free rotation connection with the intermediate shaft, the sun gear is in transmission matching connection with the intermediate shaft, the outer ring gear is in free rotation connection with the intermediate shaft, the first half shaft driving gear is in transmission matching connection with the intermediate shaft, and the second half shaft driving gear is in free rotation connection with the intermediate shaft. The reduction gear can freely rotate on the intermediate shaft, the outer ring gear can freely rotate on the intermediate shaft, the outer ring gear drives the second half shaft driving gear to freely rotate on the intermediate shaft, the sun gear can drive the intermediate shaft to rotate, and the intermediate shaft drives the first half shaft driving gear to rotate.
[0010] As the preferred scheme of the utility model, the first half shaft drive gear tooth number is less than the first half shaft passive gear tooth number, the second half shaft drive gear tooth number is less than the second half shaft passive gear tooth number, and the first half shaft passive gear is smaller than the second half shaft passive gear. The first half shaft drive gear tooth number is less than the first half shaft passive gear tooth number, the second half shaft drive gear tooth number is less than the second half shaft passive gear tooth number, which plays the role of speed reduction and torque increase, and more powerfully brings the half shaft output power. The first half shaft passive gear is smaller than the second half shaft passive gear, which is conducive to the compact layout of space and reduces the occupied space of the differential.
[0011] As the preferred scheme of the utility model, the installation direction of the first half shaft drive gear and the second half shaft drive gear on the intermediate shaft is opposite. Due to the working principle of the planetary gear mechanism, the rotation direction of the first half shaft drive gear and the second half shaft drive gear is opposite, so the installation direction of the first half shaft drive gear and the second half shaft drive gear on the intermediate shaft is opposite, so that the half shaft can output power in the same direction.
[0012] As the preferred scheme of the utility model, the driving gear, the reduction gear, the first half shaft drive gear, the first half shaft passive gear, the second half shaft drive gear and the second half shaft passive gear are all bevel gears, which have high bearing capacity and stable transmission.
[0013] In summary, due to the adoption of the above technical scheme, the utility model has the beneficial effects that:
[0014] 1. The working principle is that first, the transmission shaft of the automobile transmits power to the driving gear, the driving gear drives the reduction gear, realizes speed reduction and increases torque, the axial direction of the reduction gear is perpendicular to the horizontal plane, so that the reduction gear and the planetary gear mechanism arranged on the lower end surface of the reduction gear are both installed horizontally and are arranged above the half shaft, which reduces the vertical arrangement space and thus increases the loading space inside the automobile. Then, the reduction gear drives the horizontally installed planetary gear mechanism to rotate, the sun gear in the planetary gear mechanism drives the rotation of the first half shaft, the outer ring gear in the planetary gear mechanism drives the rotation of the second half shaft, realizes the differential function of the two half shafts controlled by the differential, and drives the half shaft to output power.
[0015] 2. When the automobile is running normally, due to the principle of the planetary gear mechanism, the sun gear drives the rotation of the first half shaft drive gear, the first half shaft drive gear drives the rotation of the first half shaft passive gear, realizes the power output of the first half shaft. At this time, the outer ring gear drives the rotation of the second half shaft drive gear, the second half shaft drive gear drives the rotation of the second half shaft passive gear, realizes the power output of the second half shaft.
[0016] 3、The reduction gear, the sun gear, the outer ring gear, the first half shaft driving gear and the second half shaft driving gear are arranged on the same intermediate shaft, and the intermediate shaft is in free rotation connection with the shell, so that the differential lock structure is compact, stable and space-saving, and the cooperation efficiency among the gears is high.
[0017] 4、The reduction gear can rotate freely on the intermediate shaft, the outer ring gear can rotate freely on the intermediate shaft, the outer ring gear drives the second half shaft driving gear to rotate freely on the intermediate shaft, and the sun gear can drive the intermediate shaft to rotate, and the intermediate shaft drives the first half shaft driving gear to rotate.
[0018] 5、The first half shaft driving gear has a smaller number of teeth than the first half shaft driven gear, and the second half shaft driving gear has a smaller number of teeth than the second half shaft driven gear, so that the power output of the half shaft is more powerful, and the first half shaft driven gear is smaller than the second half shaft driven gear, so that the space is compactly arranged, and the space occupied by the differential is reduced.
[0019] 6、Due to the working principle of the planetary gear mechanism, the rotation directions of the first half shaft driving gear and the second half shaft driving gear are opposite, so that the first half shaft driving gear and the second half shaft driving gear are installed in opposite directions on the intermediate shaft, so that the half shafts can output power in the same direction.
[0020] 7、The driving gear, the reduction gear, the first half shaft driving gear, the first half shaft driven gear, the second half shaft driving gear and the second half shaft driven gear are bevel gears, and have high bearing capacity and stable transmission. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is a structure schematic view of the utility model;
[0022] Figure 2 It is a side structure schematic view of the utility model;
[0023] Figure 3 It is a structure schematic view of a traditional differential.
[0024] Marked in the figure: 1-shell, 2-driving gear, 3-reduction gear, 4-planetary gear, 5-sun gear, 6-outer ring gear, 7-intermediate shaft, 8-first half shaft driving gear, 9-first half shaft driven gear, 10-second half shaft driving gear, 11-second half shaft driven gear, 12-half shaft, 13-wheel, 14-ground. DETAILED DESCRIPTION
[0025] The utility model will be described in detail in combination with the drawings.
[0026] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model. Example 1
[0027] As shown in Figure 1 and Figure 2 , a horizontal placement type automobile differential in the embodiment comprises a casing 1 and a half shaft 12, the casing 1 is internally provided with a driving gear 2, the driving gear 2 is engaged with a reduction gear 3, the axial direction of the reduction gear 3 is perpendicular to the horizontal plane when the differential is horizontally placed, the lower end surface of the reduction gear 3 is provided with a planetary gear mechanism, the axial direction of the planetary gear mechanism is also perpendicular to the horizontal plane, the planetary gear mechanism is arranged above the half shaft 12, the sun gear 5 in the planetary gear mechanism is used to drive the rotation of one side half shaft, and the outer ring gear 6 in the planetary gear mechanism is used to drive the rotation of the other side half shaft.
[0028] The working principle is that firstly, the driving shaft of the automobile transmits power to the driving gear 2, the driving gear 2 drives the reduction gear 3, so as to realize the reduction and increase of torque, the axial direction of the reduction gear 3 is perpendicular to the horizontal plane, so that the reduction gear 3 and the planetary gear mechanism provided on the lower end surface of the reduction gear 3 are both horizontally placed, and are both arranged above the half shaft 12, thereby reducing the arrangement space in the vertical direction, and thus increasing the loading space inside the automobile; then the reduction gear 3 drives the horizontally placed planetary gear mechanism to operate, the sun gear 5 in the planetary gear mechanism drives the rotation of one side half shaft, and the outer ring gear 6 in the planetary gear mechanism is used to drive the rotation of the other side half shaft, so as to realize the differential function of the two half shafts controlled by the differential, and drive the power output of the half shaft. Example 2
[0029] As shown in Figure 1 and Figure 2 , according to the horizontal placement type automobile differential of example 1, the sun gear 5 is coaxially fixedly connected with a first half shaft driving gear 8, the first half shaft driving gear 8 is engaged with a first half shaft driven gear 9, the outer ring gear 6 is coaxially fixedly connected with a second half shaft driving gear 10, and the second half shaft driving gear 10 is engaged with a second half shaft driven gear 11.
[0030] When the automobile normally runs, due to the principle of the planetary gear mechanism, the sun gear 5 drives the rotation of the first half shaft driving gear 8, the first half shaft driving gear 8 drives the rotation of the first half shaft driven gear 9, so as to realize the power output of one side half shaft 12, at this time, the outer ring gear 6 drives the rotation of the second half shaft driving gear 10, the second half shaft driving gear 10 drives the rotation of the second half shaft driven gear 11, so as to realize the power output of the other side half shaft 12. Example 3
[0031] As shown in Figure 1 and Figure 2 , according to the horizontal placement type automobile differential of embodiment 2, the reduction gear 3, the sun gear 5, the outer ring gear 6, the first half shaft drive gear 8 and the second half shaft drive gear 10 are all arranged on the same intermediate shaft 7, and the intermediate shaft 7 is in free rotation connection with the housing 1, so that the differential lock structure is compact, stable and space-saving, and the cooperation efficiency among the gears is high. Embodiment 4
[0032] As shown in Figure 1 and Figure 2 , according to the horizontal placement type automobile differential of embodiment 3, the reduction gear 3 is in free rotation connection with the intermediate shaft 7, the sun gear 5 is in transmission matching connection with the intermediate shaft 7, the outer ring gear 6 is in free rotation connection with the intermediate shaft 7, the first half shaft drive gear 8 is in transmission matching connection with the intermediate shaft 7, and the second half shaft drive gear 10 is in free rotation connection with the intermediate shaft 7.
[0033] The reduction gear 3 can freely rotate on the intermediate shaft 7, the outer ring gear 6 can also freely rotate on the intermediate shaft 7, the outer ring gear 6 further drives the second half shaft drive gear 10 to freely rotate on the intermediate shaft 7, the sun gear 5 can also drive the intermediate shaft 7 to rotate, and the intermediate shaft 7 further drives the first half shaft drive gear 9 to rotate. Embodiment 5
[0034] As shown in Figure 1 and Figure 2 , according to the horizontal placement type automobile differential of embodiment 4, the number of teeth of the first half shaft drive gear 8 is less than that of the first half shaft driven gear 9, the number of teeth of the second half shaft drive gear 10 is less than that of the second half shaft driven gear 11, and the first half shaft driven gear 9 is smaller than the second half shaft driven gear 11.
[0035] The number of teeth of the first half shaft drive gear 8 is less than that of the first half shaft driven gear 9, the number of teeth of the second half shaft drive gear 10 is less than that of the second half shaft driven gear 11, which plays a role of speed reduction and torque increase, and more powerfully drives the half shaft 12 to output power, and the first half shaft driven gear 9 is smaller than the second half shaft driven gear 11, which is conducive to compact layout and reduces the occupied space of the differential. Embodiment 6
[0036] As shown in Figure 1 and Figure 2 , according to the horizontal placement type automobile differential of embodiment 5, the installation directions of the first half shaft drive gear 8 and the second half shaft drive gear 10 on the intermediate shaft 7 are opposite.
[0037] Due to the working principle of the planetary gear mechanism, the rotation directions of the first half axle drive gear 8 and the second half axle drive gear 10 are opposite, so the installation directions of the first half axle drive gear 8 and the second half axle drive gear 10 on the intermediate shaft are opposite, so that the half axles can output power in the same direction. Example 7
[0038] As shown in Figure 1 and Figure 2 A horizontally placed automobile differential according to Example 6, the driving gear 2, the reduction gear 3, the first half axle drive gear 8, the first half axle driven gear 9, the second half axle drive gear 10 and the second half axle driven gear 11 are all bevel gears, which have high load capacity and stable transmission.
[0039] The above is only a preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A horizontally mounted automotive differential comprising a housing and half shafts, characterized in that, The shell is internally provided with a driving gear, the driving gear is engaged with a reduction gear, the axial direction of the reduction gear is perpendicular to the horizontal plane when the differential is horizontally placed, the lower end surface of the reduction gear is provided with a planetary gear mechanism, the axial direction of the planetary gear mechanism is also perpendicular to the horizontal plane, the planetary gear mechanism is arranged above the half shaft, the sun gear in the planetary gear mechanism is used for driving the half shaft on one side to rotate, and the outer ring gear in the planetary gear mechanism is used for driving the half shaft on the other side to rotate.
2. A horizontally mounted automotive differential according to claim 1, characterized in that, The sun gear is coaxially and fixedly connected with a first half shaft driving gear, the first half shaft driving gear is in engagement connection with a first half shaft passive gear, the outer ring gear is coaxially and fixedly connected with a second half shaft driving gear, and the second half shaft driving gear is in engagement with a second half shaft passive gear.
3. A horizontally mounted automotive differential according to claim 2, characterized in that, The reduction gear, the sun gear, the outer ring gear, the first half shaft driving gear and the second half shaft driving gear are all arranged on the same intermediate shaft, and the intermediate shaft is in free rotation connection with the shell.
4. A horizontally mounted automotive differential according to claim 3, wherein The reduction gear is in free rotation connection with the intermediate shaft, the sun gear is in transmission matching connection with the intermediate shaft, the outer ring gear is in free rotation connection with the intermediate shaft, the first half shaft driving gear is in transmission matching connection with the intermediate shaft, and the second half shaft driving gear is in free rotation connection with the intermediate shaft.
5. A horizontally mounted automotive differential according to claim 4, wherein The first half shaft driving gear has a smaller number of teeth than the first half shaft passive gear, the second half shaft driving gear has a smaller number of teeth than the second half shaft passive gear, and the first half shaft passive gear is smaller than the second half shaft passive gear.
6. A horizontally mounted automotive differential according to claim 5, characterized in that, The installation directions of the first half shaft driving gear and the second half shaft driving gear on the intermediate shaft are opposite.
7. A horizontally mounted automotive differential according to claim 6, characterized in that, The driving gear, the reduction gear, the first half shaft driving gear, the first half shaft passive gear, the second half shaft driving gear and the second half shaft passive gear are all bevel gears.