Compact differential mechanism

Abstract

The utility model discloses a compact differential mechanism, which relates to the technical field of automobiles, and comprises a box shell, the differential mechanism is arranged in the box shell and used for differential use; the regulation and control mechanism is arranged in the box shell and used for differential regulation and control in the use process of the differential mechanism, the regulation and control mechanism comprises a shifting fork, a reset spring, a sliding sleeve and an electromagnetic valve, the sliding sleeve is connected to the differential mechanism in a sliding mode, and the shifting fork is installed in the box shell. According to the compact differential mechanism, by using the regulation and control mechanism, according to the requirements of a whole vehicle, a differential lock mechanism of a differential mechanism is optimally designed, a sliding sleeve is installed on a differential mechanism shell, the axial size of a differential lock is reduced, the structure of the whole vehicle can be reduced, the structure of a rear axle is more compact, the appearance size is smaller, and arrangement and installation of the whole vehicle are better facilitated; and the width of the vehicle body can be properly reduced, so that the whole vehicle structure is more compact, the purchase cost of a whole vehicle manufacturer is reduced, and the market competitiveness of the whole vehicle is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a compact differential mechanism. Background Art

[0002] The automobile differential is a mechanism that enables the left and right (or front and rear) drive wheels to rotate at different speeds. It is mainly composed of left and right half-axle gears, two planetary gears and a gear rack. Its function is to make the left and right wheels roll at different speeds when the car is turning or driving on uneven roads, that is, to ensure that the drive wheels on both sides perform pure rolling motion. The differential is installed to adjust the speed difference between the left and right wheels. In four-wheel drive, in order to drive the four wheels, all the wheels must be connected. If the four wheels are mechanically connected together, the car cannot rotate at the same speed when driving on a curve. In order to make the rotation speed of the car basically consistent when driving on a curve, an intermediate differential needs to be added to adjust the speed difference between the front and rear wheels.

[0003] The authorization publication number "CN208951270U" records "a compact differential gearbox structure, including a motor, a worm, a turbine, a differential and a control module; the output end of the motor drives the worm to rotate, the worm is meshed with the turbine, and the worm drives the turbine; the differential includes a gear rack, a half-shaft gear and a planetary gear, the gear rack is arranged inside the turbine, the planetary gears are evenly fixed on the gear rack, the turbine is clamped with the outer end of the gear rack, the rotation of the turbine drives the planetary gears to rotate, the planetary gears are meshed with the half-shaft gears, and the rotation of the planetary gears drives the half-shaft gears to rotate, the axis rotation direction of the planetary gears is perpendicular to the axis rotation direction of the half-shaft gears, the turbine is sleeved on the gear racks of the left and right half-shaft gears of the differential, the left and right gear racks are matched and connected to each other, the differential includes three planetary gears, the three planetary gears are distributed in a 120-degree direction, an axial hole is left in the middle of the differential, and the speed change shaft sleeve is respectively connected to the left and right output half-shaft gears in the axial hole".

[0004] The axial dimension of the output end of the rear axle of the existing beach vehicles is too large, which causes a lot of troubles in the installation and layout of the whole vehicle. Small-displacement beach vehicles require a compact structure of the whole vehicle, and the front and rear axles are required to be minimized as much as possible to facilitate the installation of the whole vehicle. Therefore, a compact differential mechanism is needed. Utility Model Content

[0005] The utility model provides a compact differential mechanism. Through the use of a regulating mechanism, the differential lock mechanism of the differential is optimized according to the requirements of the whole vehicle. The sliding sleeve is installed on the differential case, the axial size of the differential lock is reduced, the structure of the whole vehicle can be reduced, the rear axle structure is more compact, the outer size is smaller, it is more conducive to the arrangement and installation of the whole vehicle, the width of the vehicle body can be appropriately reduced, the structure of the whole vehicle is more compact, the procurement cost of the whole vehicle manufacturer is reduced, and the market competitiveness of the whole vehicle is enhanced.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a compact differential mechanism, comprising:

[0007] A box shell with a box cover fixedly connected to one side by bolts;

[0008] A differential mechanism is disposed in the housing and is used for differential speed; and

[0009] A regulating mechanism is arranged in the box shell and is used for differential regulation during the use of the differential. The regulating mechanism includes a shift fork, a return spring, a sleeve and a solenoid valve. The sleeve is slidably connected to the differential mechanism, the shift fork is installed in the box shell, one end of the return spring is fixedly connected to the sleeve, and the other end of the return spring is fixedly connected to the shift fork, the solenoid valve is installed in the box shell, and the solenoid valve is connected to the shift fork.

[0010] Furthermore, the differential mechanism comprises:

[0011] An input component is arranged in the housing and is used for inputting power;

[0012] An output component, disposed in the housing, for inputting power output; and

[0013] The transmission component is arranged in the housing, and the transmission component is connected to the input component, and the transmission component is connected to the output component for differential transmission of input power.

[0014] Furthermore, the input component includes an input shaft and an input gear, the input shaft is rotatably connected to the top of the housing, and the input gear is fixedly connected to the bottom of the input shaft.

[0015] Furthermore, the output component includes a first output shaft and a second output shaft, the first output shaft is rotatably connected to the center of one side of the housing, and the second output shaft is rotatably connected to the center of the other side of the housing.

[0016] Furthermore, the transmission component includes a half-shaft gear, a plurality of planetary gears and a sun gear, the half-shaft gear is fixedly connected to one end of the second output shaft, the sun gear is fixedly connected to one end of the first output shaft, the plurality of planetary gears are equidistantly rotatably connected in the housing, the plurality of planetary gears are meshed with the half-shaft gears, and the plurality of planetary gears are meshed with the sun gear.

[0017] The utility model provides a compact differential mechanism, which has the following beneficial effects:

[0018] (1) The compact differential mechanism optimizes the design of the differential lock mechanism of the differential through the use of the regulating mechanism according to the requirements of the vehicle, installs the sliding sleeve on the differential case, reduces the axial size of the differential lock, and can reduce the structure of the vehicle. The rear axle structure is more compact and the external dimensions are smaller, which is more conducive to the layout and installation of the vehicle. The width of the vehicle body can be appropriately reduced, making the vehicle structure more compact, reducing the procurement cost of the vehicle manufacturer, and enhancing the market competitiveness of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a partial cross-sectional view of the utility model;

[0020] Figure 2 It is a three-dimensional diagram of the differential mechanism of the utility model;

[0021] Figure 3 It is a three-dimensional diagram of the utility model;

[0022] Figure 4 It is a schematic diagram of the differential mechanism of the utility model;

[0023] Figure 5 It is a schematic diagram of the regulating mechanism of the utility model.

[0024] In the figure: 1. casing; 2. input shaft; 3. casing cover; 4. input gear; 5. half-shaft gear; 6. planetary gear; 7. sun gear; 8. sleeve; 9. first output shaft; 10. shift fork; 11. return spring; 12. second output shaft; 13. solenoid valve. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-5 The utility model provides a technical solution: a compact differential mechanism, comprising:

[0027] A box shell 1 is fixedly connected to a box cover 3 on one side by bolts;

[0028] A differential mechanism is disposed in the housing 1 for differential use; and

[0029] The regulating mechanism is arranged in the housing 1 and is used for differential regulation during the use of the differential. The regulating mechanism includes a shift fork 10, a return spring 11, a sleeve 8 and a solenoid valve 13. The sleeve 8 is slidably connected to the differential mechanism. The shift fork 10 is installed in the housing 1. One end of the return spring 11 is fixedly connected to the sleeve 8, and the other end of the return spring 11 is fixedly connected to the shift fork 10. The solenoid valve 13 is installed in the housing 1 and is connected to the shift fork 10.

[0030] In this implementation scheme: a differential lock switch is installed on the whole vehicle to control the use of the solenoid valve 13. The model of the solenoid valve 13 can be selected from those available on the market as needed, and no further details will be given here. In the initial state, the differential lock is in a disengaged state. When it is necessary to achieve no differential, the solenoid valve 13 works, pushing the shift fork 10 to rotate and drive the sliding sleeve 8 to move downward and combine with the left half-shaft gear 5. At this time, the left half-shaft gear 5 is connected with the sliding sleeve 8 and the box shell 1 as a whole to achieve no differential rotation. When the solenoid valve 13 is powered off, the sliding sleeve 8, under the action of the return spring 11, pushes the shift fork 10 to rotate and drives the sliding sleeve 8 to move upward to the initial position to complete the differential movement.

[0031] Specifically, the differential mechanism includes:

[0032] An input component is arranged in the housing 1 and is used for inputting power;

[0033] An output component, disposed in the housing 1, for inputting power output; and

[0034] The transmission component is arranged in the housing 1, and is connected to the input component, and is also connected to the output component, for differential transmission of input power.

[0035] In this embodiment: the input component transmits power to the output component through the transmission component to complete the differential transformation.

[0036] Specifically, the input component includes an input shaft 2 and an input gear 4 . The input shaft 2 is rotatably connected to the top of the housing 1 , and the input gear 4 is fixedly connected to the bottom of the input shaft 2 .

[0037] In this embodiment: the input shaft 2 is connected to the power mechanism and transmits power to the inside of the housing 1 through the input gear 4.

[0038] Specifically, the output component includes a first output shaft 9 and a second output shaft 12 . The first output shaft 9 is rotatably connected to the center of one side of the housing 1 , and the second output shaft 12 is rotatably connected to the center of the other side of the housing 1 .

[0039] In this embodiment, the first output shaft 9 and the second output shaft 12 respectively complete the transmission of power at different positions.

[0040] Specifically, the transmission components include a half-shaft gear 5, a plurality of planetary gears 6 and a sun gear 7. The half-shaft gear 5 is fixedly connected to one end of the second output shaft 12, the sun gear 7 is fixedly connected to one end of the first output shaft 9, and the plurality of planetary gears 6 are equidistantly rotatably connected in the housing 1. The plurality of planetary gears 6 are meshed with the half-shaft gear 5, and the plurality of planetary gears 6 are meshed with the sun gear 7.

[0041] In this embodiment, the half-shaft gears 5, the plurality of planetary gears 6 and the sun gear 7 cooperate with each other so that the power input by the input gear 4 can achieve non-differential rotation and differential rotation as required.

[0042] When in use, first determine the parameters of the input gear 4 according to the power parameters of the whole vehicle, then determine the parameters of multiple planetary gears 6 and half-shaft gears 5, design the planetary gears, planetary gears 6, half-shaft gears 5, box shell 1 and box cover 3 according to the gear parameters, and then design the corresponding dimensions according to the assembly size requirements of the whole vehicle. In the initial state, the differential lock is in a disengaged state. When it is necessary to achieve no differential, the solenoid valve 13 works, pushing the shift fork 10 to rotate and drive the sliding sleeve 8 to move downward and combine with the left half-shaft gear 5. At this time, the left half-shaft gear 5 is connected with the sliding sleeve 8 and the box shell 1 as a whole to achieve no differential rotation. When the solenoid valve 13 is powered off, the sliding sleeve 8, under the action of the reset spring 11, pushes the shift fork 10 to rotate and drives the sliding sleeve 8 to move upward to the initial position to complete the differential movement.

[0043] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A compact differential mechanism, characterized in that: include: A box shell (1) having a box cover (3) fixedly connected to one side by bolts; A differential mechanism is arranged in the housing (1) and is used for differential operation; as well as A regulating mechanism is arranged in a casing (1) and is used for regulating the differential during use of the differential. The regulating mechanism comprises a shift fork (10), a return spring (11), a sliding sleeve (8) and a solenoid valve (13). The sliding sleeve (8) is slidably connected to the differential mechanism. The shift fork (10) is installed in the casing (1). One end of the return spring (11) is fixedly connected to the sliding sleeve (8), and the other end of the return spring (11) is fixedly connected to the shift fork (10). The solenoid valve (13) is installed in the casing (1), and the solenoid valve (13) is connected to the shift fork (10).

2. The compact differential mechanism according to claim 1, characterized in that: The differential mechanism comprises: An input component is arranged in the housing (1) and is used for inputting power; An output component is disposed in the housing (1) and is used for inputting power output; and The transmission component is arranged in the housing (1), and is connected to the input component, and the transmission component is connected to the output component, for differential transmission of input power.

3. The compact differential mechanism according to claim 2, characterized in that: The input component comprises an input shaft (2) and an input gear (4); the input shaft (2) is rotatably connected to the top of the housing (1), and the input gear (4) is fixedly connected to the bottom of the input shaft (2).

4. The compact differential mechanism according to claim 3, characterized in that: The output component comprises a first output shaft (9) and a second output shaft (12); the first output shaft (9) is rotatably connected to the center of one side of the casing (1), and the second output shaft (12) is rotatably connected to the center of the other side of the casing (1).

5. The compact differential mechanism according to claim 4, characterized in that: The transmission component comprises a half-axle gear (5), a plurality of planetary gears (6) and a sun gear (7); the half-axle gear (5) is fixedly connected to one end of the second output shaft (12); the sun gear (7) is fixedly connected to one end of the first output shaft (9); the plurality of planetary gears (6) are equidistantly rotatably connected in the housing (1); the plurality of planetary gears (6) are meshed with the half-axle gear (5); and the plurality of planetary gears (6) are meshed with the sun gear (7).

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