Electronic differential mechanism for front axle and rear axle
By designing an electronic front and rear axle differential, and utilizing an electronic control unit and planetary gear mechanism to achieve automatic power distribution, the wear and inconvenience of adjustment of the mechanical front axle differential are solved, improving the flexibility and practicality of vehicle power output.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-26
- Publication Date
- 2026-04-07
AI Technical Summary
The existing mechanical structure of the front axle differential is prone to wear and fatigue, and is not convenient for automatic adjustment of wheel differential.
It adopts an electronic front and rear axle differential, which realizes automatic power distribution through electronic control unit and control motor in conjunction with planetary gear and worm gear mechanism. The differential plate is controlled by eccentric shaft to perform half-cycle motion, and torque distribution is realized by combining differential torsion spring and clutch plate.
It significantly reduces wear and mechanical fatigue, and can automatically distribute power to other wheels when wheels slip, improving the flexibility and practicality of the vehicle's power output modes.
Smart Images
Figure CN224093778U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of differentials, specifically an electronic front and rear axle differential. Background Technology
[0002] The front and rear axle differential is a power output mechanism located between the two front wheels of a vehicle. Existing mechanical front axle differentials rely on metal rails to determine the position signal, which is prone to wear and fatigue. Therefore, an electronic front and rear axle differential is proposed to effectively prevent such situations and significantly enhance the practicality of the electronic front and rear axle differential. Utility Model Content
[0003] This invention provides an electronic front and rear axle differential, aiming to solve the problem that existing front axle differentials are not convenient for automatically adjusting wheel differential speed.
[0004] To achieve the above objectives, this utility model provides an electronic front and rear axle differential, including a differential assembly;
[0005] The differential assembly includes a rear housing and a front housing. An electronic control unit is installed inside the rear housing, and a controller is installed on one side of the electronic control unit. A control motor is installed inside the front housing. A differential gear is located at the output end of the control motor. A first planetary gear is meshed with one side of the differential gear. A half-shaft gear is fixedly connected to the surface of the first planetary gear. A second planetary gear is meshed with one side of the half-shaft gear. A half-shaft gear is fixedly connected to the lower end of the second planetary gear. A third planetary gear is meshed with one side of the half-shaft gear. A gear shaft is installed inside the third planetary gear. A worm gear is fixedly installed at the lower end of the gear shaft. A worm wheel is meshed with one side of the worm gear. A rotating mechanism is fixedly connected to the surface of the worm wheel. An eccentric shaft is fixedly connected to the end of the rotating mechanism. A differential plate is installed on the surface of the front housing. A connecting groove is formed on the surface of the differential plate. A differential torsion spring is snapped onto the surface of the differential plate. A sleeve shaft is inserted into the differential torsion spring. The eccentric shaft is inserted into the connecting groove.
[0006] As a preferred embodiment of this utility model, a plurality of lugs are fixedly connected to the side surfaces of the rear housing and the front housing, and a first bolt is threaded into the interior of each of the lugs.
[0007] As a preferred embodiment of this utility model, the front housing is provided with two positioning blocks inside, the control motor is engaged between the two positioning blocks, and the surface of the front housing is provided with a connection hole.
[0008] As a preferred embodiment of this utility model, the first planetary gear, the second planetary gear, and the third planetary gear are each equipped with a first extrusion plate, a second extrusion plate, and a third extrusion plate at their upper and lower ends, respectively, and the first extrusion plate, the second extrusion plate, and the third extrusion plate are each internally threaded with two second bolts.
[0009] As a preferred embodiment of this utility model, a positioning shaft is fixedly installed on the surface of the front housing, and the sleeve is sleeved on the side surface of the positioning shaft.
[0010] In a preferred embodiment of this utility model, both the rear housing and the front housing are made of cast aluminum.
[0011] In a preferred embodiment of this utility model, the control motor, controller, and electronic control unit are electrically connected.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. When the front wheels of the car are turning, the controller can easily detect the power output of the car. When the wheels on both sides are turning, if one of the wheels slips, the electronic front and rear axle differential can distribute the power to the other three wheels for power output. The electronic control unit automatically controls the motor to drive the differential gear to rotate, which in turn drives the first planetary gear, half-shaft gear, second planetary gear, and third planetary gear to rotate, thereby driving the gear shaft and worm gear to rotate, which in turn drives the worm wheel, rotating mechanism, and eccentric shaft to rotate. At this time, the rotation of the eccentric shaft in the connecting groove controls the differential plate to perform half-turn motion. Finally, the differential torsion spring works with the clutch plate, and the clutch plate partially engages to transfer part of the torque to the wheel with low traction to achieve torque distribution. Compared with the front axle differential in the prior art, this utility model can easily change the vehicle's power output mode and distribute the power to the wheels through the above-mentioned structure, changing the output from the front two wheels to the output of all four wheels of the vehicle, thereby enhancing the practicality of the electronic front and rear axle differential. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is an anatomical diagram of the shell structure of this utility model;
[0016] Figure 3 This is a side view of the shell structure of this utility model;
[0017] Figure 4 This is a disassembled diagram of the differential assembly structure of this utility model;
[0018] Figure 5 This is a schematic diagram of the gear structure of this utility model;
[0019] Figure 6 This is a disassembly diagram of the differential torsion spring structure of this utility model.
[0020] In the diagram: 100, Differential assembly; 101, Rear housing; 102, Front housing; 103, Electronic control unit; 104, Controller; 105, Control motor; 106, Differential gear; 107, First planetary gear; 108, Half-shaft gear; 109, Second planetary gear; 110, Gear shaft; 120, Third planetary gear; 130, Worm gear; 140, Worm wheel; 150, Rotating mechanism; 160, Eccentric shaft; 170, Differential plate; 180, Connecting groove; 190, Differential torsion spring; 200, Sleeve shaft; 111, Ear block; 112, First bolt; 121, Positioning block; 122, Connecting hole; 131, First pressing plate; 132, Second pressing plate; 133, Third pressing plate; 134, Second bolt; 141, Positioning shaft. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Example 1
[0023] Please see Figures 1-6 This utility model provides an electronic front and rear axle differential, including a differential assembly 100;
[0024] The differential assembly 100 includes a rear housing 101 and a front housing 102. An electronic control unit 103 is installed inside the rear housing 101, and a controller 104 is installed on one side of the electronic control unit 103. A control motor 105 is installed inside the front housing 102. A differential gear 106 is provided at the output end of the control motor 105. A first planetary gear 107 is meshed with one side of the differential gear 106. A half-shaft gear 108 is fixedly connected to the surface of the first planetary gear 107. A second planetary gear 109 is meshed with one side of the half-shaft gear 108. The lower end of the second planetary gear 109 is fixedly connected to the half-shaft gear 108. A third planetary gear 120 is meshed with one side of the 8. A gear shaft 110 is installed inside the third planetary gear 120. A worm 130 is fixedly installed at the lower end of the gear shaft 110. A worm wheel 140 is meshed with one side of the worm 130. A rotating mechanism 150 is fixedly connected to the surface of the worm wheel 140. An eccentric shaft 160 is fixedly connected to the end of the rotating mechanism 150. A differential plate 170 is installed on the surface of the front housing 102. A connecting groove 180 is opened on the surface of the differential plate 170. A differential torsion spring 190 is snapped onto the surface of the differential plate 170. A sleeve shaft 200 is inserted into the inside of the differential torsion spring 190. The eccentric shaft 160 is inserted into the inside of the connecting groove 180.
[0025] In one specific embodiment, the differential assembly 100 facilitates changes in the vehicle's power output mode, reducing wear and mechanical fatigue. It switches from front-wheel output to four-wheel output, significantly improving the ease of use of the front axle differential. Simultaneously, the electronic front and rear axle differential is easily installed on the front axle between the two front wheels or the rear axle between the two rear wheels, significantly enhancing its versatility. In use, the electronic control unit 103 automatically controls the control motor 105 to rotate the differential gear 106, which in turn rotates in conjunction with the first planetary gear 107, half-shaft gear 108, second planetary gear 109, and third planetary gear 120. The gear shaft 110 and worm 130 can rotate, which in turn can rotate the worm wheel 140, the rotating mechanism 150 and its end eccentric shaft 160. The eccentric shaft 160 rotates in the connecting groove 180, thereby controlling the differential plate 170 to perform half-cycle motion. Finally, the differential torsion spring 190 cooperates with the clutch plate, and the uniform speed clutch plate partially engages to transmit part of the torque to the low-traction wheel to achieve torque distribution, reduce wear and mechanical fatigue. When one wheel of the car slips, the electronic front and rear axle differential can distribute power to the other three wheels for power output, thereby significantly improving the practicality of the front axle differential.
[0026] Please see Figure 2A number of lugs 111 are fixedly connected to the side surfaces of the rear housing 101 and the front housing 102, and the interior of each lug 111 is threaded with a first bolt 112.
[0027] In one specific embodiment, the connection between the rear housing 101 and the front housing 102 is enhanced by threading the first bolt 112 inside the lug 111.
[0028] Please see Figure 2 The front housing 102 has two positioning blocks 121 inside, and the control motor 105 is snapped between the two positioning blocks 121. The surface of the front housing 102 has a connection hole 122.
[0029] In one specific embodiment, the positioning block 121 can significantly enhance the stability of the control motor 105 installed in the front housing 102, and the connection hole 122 facilitates the installation and limiting of the rotating mechanism 150.
[0030] Please see Figure 3 and Figure 4 The first planetary gear 107, the second planetary gear 109 and the third planetary gear 120 are respectively equipped with a first extrusion plate 131, a second extrusion plate 132 and a third extrusion plate 133 at their upper and lower ends. The first extrusion plate 131, the second extrusion plate 132 and the third extrusion plate 133 are each threaded with two second bolts 134.
[0031] In one specific embodiment, the first extrusion plate 131, the second extrusion plate 132, and the third extrusion plate 133 facilitate the installation and positioning of the gear structure, improving the installation stability of the first planetary gear 107, the second planetary gear 109, and the third planetary gear 120. Then, the structure can be disassembled by removing the second bolt 134.
[0032] Please see Figures 2-5 A positioning shaft 141 is fixedly installed on the surface of the front housing 102, and a sleeve shaft 200 is sleeved on the side surface of the positioning shaft 141.
[0033] In one specific embodiment, the sleeve 200 is fitted inside the positioning shaft 141 to improve the installation stability of the differential torsion spring 190, and the differential torsion spring 190 can be disassembled by removing the sleeve 200.
[0034] Please see Figure 2 and Figure 3 Both the rear housing 101 and the front housing 102 are made of cast aluminum.
[0035] In one specific embodiment, the rear housing 101 and front housing 102, made of cast aluminum, can reduce their weight while maintaining their strength, thereby improving the ease of use of the front axle differential.
[0036] Please see Figure 2 and Figure 3 The motor 105, controller 104, and electronic control unit 103 are electrically connected.
[0037] In one specific embodiment, the control motor 105, controller 104, and electronic control unit 103 can facilitate automatic control of differential start-up, improving ease of use.
[0038] Working principle: During use, the electronic control unit 103 automatically controls the control motor 105 to rotate the differential gear 106, which in turn rotates in conjunction with the first planetary gear 107, half-shaft gear 108, second planetary gear 109, and third planetary gear 120. This, in turn, drives the gear shaft 110 and worm gear 130 to rotate, which in turn drives the worm wheel 140, the rotating mechanism 150, and its eccentric shaft 160 at the end. Simultaneously, the electronic front and rear axle differential is easy to install on the front axle between the two front wheels or the rear axle between the two rear wheels, significantly enhancing… The versatility of the electronic front and rear axle differential expands its application range. By rotating the eccentric shaft 160 within the connecting groove 180, the differential plate 170 can be controlled to perform a half-cycle motion. Finally, through the differential torsion spring 190 and the clutch plate, the clutch plate partially engages, thereby transmitting a portion of the torque to the wheels with low traction to achieve torque distribution. When one wheel of the vehicle slips, the electronic front and rear axle differential can distribute power to the other three wheels for power output, while reducing wear and mechanical fatigue, significantly improving the practicality of the front axle differential.
[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An electronic front and rear axle differential, characterized in that, include: A differential assembly (100) includes a rear housing (101) and a front housing (102). An electronic control unit (103) is installed inside the rear housing (101), and a controller (104) is installed on one side of the electronic control unit (103). A control motor (105) is installed inside the front housing (102). A differential gear (106) is provided at the output end of the control motor (105). A first planetary gear (107) is meshed with one side of the differential gear (106). A half-shaft gear (108) is fixedly connected to the surface of the first planetary gear (107). A second planetary gear (109) is meshed with one side of the half-shaft gear (108). The lower end of the second planetary gear (109) is fixedly connected to the half-shaft gear (108). A third planetary gear (120) is meshed with one side of the front housing (108). A gear shaft (110) is installed inside the third planetary gear (120). A worm (130) is fixedly installed at the lower end of the gear shaft (110). A worm wheel (140) is meshed with one side of the worm (130). A rotating mechanism (150) is fixedly connected to the surface of the worm wheel (140). An eccentric shaft (160) is fixedly connected to the end of the rotating mechanism (150). A differential plate (170) is installed on the surface of the front housing (102). A connecting groove (180) is opened on the surface of the differential plate (170). A differential torsion spring (190) is snapped onto the surface of the differential plate (170). A sleeve shaft (200) is inserted into the inside of the differential torsion spring (190). The eccentric shaft (160) is inserted into the inside of the connecting groove (180).
2. The electronic front and rear axle differential according to claim 1, characterized in that: The rear housing (101) and the front housing (102) are fixedly connected to a plurality of lugs (111), and the interior of each lug (111) is threaded with a first bolt (112).
3. An electronic front and rear axle differential according to claim 1, characterized in that: The front housing (102) has two positioning blocks (121) inside, and the control motor (105) is engaged between the two positioning blocks (121). The surface of the front housing (102) has a connection hole (122).
4. An electronic front and rear axle differential according to claim 1, characterized in that: The first planetary gear (107), the second planetary gear (109), and the third planetary gear (120) are each equipped with a first extrusion plate (131), a second extrusion plate (132), and a third extrusion plate (133) at their upper and lower ends, respectively. The first extrusion plate (131), the second extrusion plate (132), and the third extrusion plate (133) are each threaded with two second bolts (134).
5. An electronic front and rear axle differential according to claim 1, characterized in that: A positioning shaft (141) is fixedly installed on the surface of the front housing (102), and the sleeve shaft (200) is sleeved on the side surface of the positioning shaft (141).
6. An electronic front and rear axle differential according to claim 1, characterized in that: Both the rear housing (101) and the front housing (102) are made of cast aluminum.
7. An electronic front and rear axle differential according to claim 1, characterized in that: The control motor (105), controller (104), and electronic control unit (103) are electrically connected.