Differential steering wheel structure

Abstract

The utility model provides a steering wheel structure of a differential mechanism, and belongs to the technical field of automobile parts. The problem that in the prior art, steering precision of a steering wheel is not high enough is solved. The utility model relates to a wheel assembly for a vehicle, which comprises a main plate, an upper fixing plate, a differential mechanism assembly, a rotating clamp, a wheel assembly and a driving assembly, and is characterized in that the differential mechanism assembly is fixedly arranged between the main plate and the upper fixing plate; the differential mechanism assembly comprises an upper differential mechanism ring, a lower differential mechanism ring, a plurality of spur gears, planetary gears, a differential mechanism cover body, differential mechanism rods, bevel gears and a differential mechanism gear disc. The spur gears are connected with the interiors of the upper differential mechanism ring and the lower differential mechanism ring in a meshed mode. The utility model has the advantages of high transmission efficiency and high steering precision.

Description

Technical Field

[0001] The utility model belongs to the technical field of automotive parts and relates to a differential steering wheel structure. Background Art

[0002] The differential plays a crucial role in the steering wheels of automobiles. It allows the left and right wheels to rotate at different speeds, thus ensuring that the vehicle can drive smoothly and stably when turning.

[0003] Chinese Patent No. CN212400888U discloses an automatic steering wheel, which includes a steering wheel drive device, a transmission component, and a steering wheel component. The steering wheel drive device includes a drive motor, the drive motor is fixedly lined in the motor installation sleeve, a driving gear is provided on the output shaft of the drive motor, the transmission component includes an internal gear ring and a driven gear assembly, the internal gear ring is fixed on the output port of the motor installation sleeve, the driven gear assembly includes a steering transmission disc, a raised driven gear installation shaft is provided on the steering transmission disc, a driven gear is provided on the driven gear installation shaft, the driven gear forms an axially limited sliding connection with the driven gear installation shaft, the steering transmission disc is connected to the transmission end of the steering wheel component, the driven gear is in transmission engagement with the internal gear ring of the outer ring, the driven gear is in transmission engagement with the driving gear of the inner ring, the driving gear drives the steering transmission disc to rotate through the driven gear, and the steering transmission disc drives the steering wheel component to rotate and change direction.

[0004] The automatic steering wheel provided by this patent is driven and decelerated through several driven gears and steered through a steering wheel. The steering accuracy of the steering wheel with this structure has room for improvement when in use. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a differential steering wheel structure for the above problems existing in the prior art.

[0006] The object of the present utility model can be achieved by the following technical solutions: A differential steering wheel structure, comprising a main board, an upper fixing plate, a differential assembly, a rotating fixture, a wheel assembly and a driving assembly. The differential assembly is fixedly installed between the main board and the upper fixing plate. A bearing fixing plate is fixed above the main board. The differential assembly includes an upper differential ring, a lower differential ring, a spur gear, a planetary gear, a differential cover body, a differential rod, a bevel gear and a differential gear disc. The driving assembly includes a first driving conduit, a second driving conduit and a cable box body. The first driving conduit and the second driving conduit are connected to the cable box body, and one end of the first driving conduit and the second driving conduit penetrates through the bearing fixing plate and is fixedly connected to the bearing fixing plate. The upper differential ring and the lower differential ring are longitudinally stacked, and a plurality of long fixing screws are fixed on the edges of the upper differential ring and the lower differential ring. A plurality of fixed bearings are installed on the long fixing screws. The inner walls of the upper differential ring and the lower differential ring are serrated. The number of spur gears is several, and the spur gears are meshed and connected to the inside of the upper differential ring and the lower differential ring. An upper transmission belt and a lower transmission belt are sleeved and fixed outside the upper differential ring and the lower differential ring. The upper transmission belt and the lower transmission belt are respectively connected to the first driving conduit and the second driving conduit.

[0007] In the above-mentioned differential steering wheel structure, the wheel assembly includes a wheel bracket and a wheel. The wheel assembly is fixedly installed below the rotating fixture.

[0008] In the above-mentioned differential steering wheel structure, the rotating fixture is connected to the lower end of the main board. The differential rod is connected to the spur gear and the differential rod penetrates through the rotating fixture and the wheel bracket. The bevel gear is fixedly installed at the bottom of the differential rod. The differential gear disc is fixedly connected to the side surface of the wheel. The bevel gear is meshed with the differential gear disc.

[0009] In the above-mentioned differential steering wheel structure, the number of planetary gears is several, and the planetary gears are meshed and connected to the spur gear.

[0010] In the above-mentioned differential steering wheel structure, an encoder bracket is fixedly installed above the upper fixing plate, and an encoder box is fixedly installed in the encoder bracket.

[0011] In the above-mentioned differential steering wheel structure, a groove is formed on one side of the main board, and the groove is attached to the outer surface of the cable box body.

[0012] Compared with the prior art, a differential steering wheel structure provided by the utility model has the following beneficial effects: 1. By arranging a differential assembly between the main board and the upper fixing plate, wherein the upper differential ring and the lower differential ring are arranged in an up-and-down stacked structure, the upper transmission belt and the lower transmission belt outside the upper differential ring and the lower differential ring are directly connected to the first drive conduit and the second drive conduit respectively, and the drive assembly directly drives the differential assembly to operate, so the transmission efficiency is relatively high; 2. By installing the differential gear disc on the side of the wheel, the bevel gear is connected to the differential rod and meshes with the differential gear disc, and the differential assembly directly controls the wheel, thus improving the steering accuracy of the wheel assembly during steering. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 is an exploded schematic diagram of the utility model.

[0015] In the figure: 1. Main board; 11. Groove; 2. Upper fixing plate; 3. Differential assembly; 31. Upper differential ring; 311. Upper transmission belt; 32. Lower differential ring; 321. Lower transmission belt; 33. Spur gear; 34. Planet gear; 35. Differential cover; 36. Differential rod; 37. Bevel gear; 38. Differential gear disc; 4. Rotary fixture; 5. Wheel assembly; 51. Wheel bracket; 52. Wheel; 6. Drive assembly; 61. First drive conduit; 62. Second drive conduit; 63. Cable box; 7. Bearing fixing plate; 8. Long fixing screw; 81. Fixed bearing; 9. Encoder bracket; 91. Encoder box. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following are specific embodiments of the utility model in combination with the drawings, and the technical solutions of the utility model will be further described, but the utility model is not limited to these embodiments.

[0017] Such as Figures 1 to 2As shown in the figure, this embodiment includes a main board 1, an upper fixing plate 2, a differential assembly 3, a rotating fixture 4, a wheel assembly 5, and a driving assembly 6. The differential assembly 3 is fixedly installed between the main board 1 and the upper fixing plate 2. A bearing fixing plate 7 is fixed above the main board 1. A first driving conduit 61 and a second driving conduit 62 are connected to a cable box body 63, and one end of the first driving conduit 61 and the second driving conduit 62 passes through the bearing fixing plate 7 and is fixedly connected to the bearing fixing plate 7. The upper parts of the first driving conduit 61 and the second driving conduit 62 are connected to the upper fixing plate 2. The upper differential ring 31 and the lower differential ring 32 are arranged in a longitudinal stack. A long fixing screw 8 is installed between the main board 1 and the upper fixing plate 2. A number of fixing bearings 81 are installed on the long fixing screw 8. The fixing bearings 81 are in contact with the outer surfaces of the upper differential ring 31 and the lower differential ring 32. The long fixing screw 8 and the fixing bearings 81 fix the upper differential ring 31 and the lower differential to between the main board 1 and the upper fixing plate 2. The inner walls of the upper differential ring 31 and the lower differential ring 32 are serrated. The number of spur gears 33 is two, and the spur gears 33 are meshed with the interiors of the upper differential ring 31 and the lower differential ring 32. The number of planetary gears 34 is two, and the planetary gears 34 are meshed with the spur gears 33. A differential cover 35 is located above the planetary gears 34 and the spur gears 33 and is connected to the planetary gears 34 and the spur gears 33. An upper transmission belt 311 and a lower transmission belt 321 are sleeved and fixed outside the upper differential ring 31 and the lower differential ring 32. The upper transmission belt 311 and the lower transmission belt 321 are respectively connected to the first driving conduit 61 and the second driving conduit 62.

[0018] To elaborate further, as Figures 1 to 2 shown in the figure, drive tooth surfaces are provided on the outsides of the upper differential ring 31, the lower differential ring 32, the first driving conduit 61, and the second driving conduit 62. The drive tooth surface of the first driving conduit 61 and the drive tooth surface of the upper differential ring 31 are at the same height. The drive tooth surface of the second driving conduit 62 and the drive tooth surface of the lower differential ring 32 are at the same height. The upper transmission belt 311 is located on the drive tooth surfaces of the first driving conduit 61 and the upper differential ring 31. The lower transmission belt 321 is located on the drive tooth surfaces of the second driving conduit 62 and the lower differential ring 32.

[0019] As Figures 1 to 2As shown, the rotary fixture 4 is connected to the lower end of the main board 1. The wheel assembly 5 is fixedly installed below the rotary fixture 4. The number of wheel brackets 51 is two, and the wheel brackets 51 are installed on both sides of the wheel 52. The number of differential rods 36 is two. The differential rods 36 pass through two spur gears 33 and then pass through the rotary fixture 4 and the wheel brackets 51 in sequence. The number of bevel gears 37 is one. The bevel gear 37 is fixedly installed at the bottom of one of the differential rods 36 and is located inside the wheel bracket 51 on this side. A connecting table surface is formed on one side of the wheel 52. The differential gear disc 38 is fixedly connected to the connecting table surface on one side of the wheel 52. The bevel gear 37 meshes with the differential gear disc 38, and the operation of the bevel gear 37 drives the operation of the differential gear disc 38.

[0020] For further details, as Figures 1 to 2 shown, an encoder bracket 9 is fixedly installed above the upper fixing plate 2. The encoder box 91 is fixedly installed at the center of the encoder bracket 9. The encoder box 91 can accurately measure and monitor the rotation angle, speed, and position information of the wheel 52.

[0021] For further details, as Figures 1 to 2 shown, a groove 11 is opened on one side of the board. The groove 11 fits the outer surface of the cable box body 63. The connection between the cable box body 63 and the main board 1 is more firm through the groove 11.

[0022] The working principle of the present utility model is as follows: The cable box body 63 operates to drive the first drive conduit 61 and the second drive conduit 62 to rotate, drives the upper transmission belt 311 and the lower transmission belt 321 to operate, and drives the differential assembly 3 to operate. The planetary gear 34 and the spur gear 33 engage in motion, driving the differential rod 36 and the bevel gear 37 to move. The bevel gear 37 meshes with the differential gear disc 38. The differential gear disc 38 is fixedly connected to the wheel 52. The bevel gear 37 drives the differential gear disc 38 and the wheel 52 to operate. The differential assembly 3 enables the four wheels 52 on the vehicle to rotate at different speeds, thereby ensuring the stability and safety of the vehicle when driving on a turning or irregular road surface.

[0023] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the technical field to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

[0024] Although various terms are used more in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. A differential steering wheel structure, characterized in that: The invention comprises a main board (1), an upper fixing plate (2), a differential assembly (3), a rotating fixture (4), a wheel assembly (5) and a driving assembly (6); the differential assembly (3) is fixedly installed between the main board (1) and the upper fixing plate (2); a bearing fixing plate (7) is fixed above the main board (1); the differential assembly (3) comprises an upper differential ring (31), a lower differential ring (32), a spur gear (33), a planetary gear (34), a differential cover (35), a differential rod (36), a bevel gear (37) and a differential gear plate (38); the driving assembly (6) comprises a first driving conduit (61), a second driving conduit (62) and a cable box (63); the first driving conduit (61) and the second driving conduit (62) are connected to the cable box (63); one end of the first driving conduit (61) and the second driving conduit (62) are provided with a The bearing fixing plate (7) is fixedly connected to the bearing fixing plate (7); the upper differential ring (31) and the lower differential ring (32) are stacked in a longitudinal direction and a plurality of long fixing screws (8) are fixed on the edges of the upper differential ring (31) and the lower differential ring (32); a plurality of fixed bearings (81) are installed on the long fixing screws (8); the inner walls of the upper differential ring (31) and the lower differential ring (32) are meshing-shaped; the number of the spur gears (33) is a plurality and the spur gears (33) are meshingly connected with the inner parts of the upper differential ring (31) and the lower differential ring (32); an upper transmission belt (311) and a lower transmission belt (321) are fixedly sleeved on the outer parts of the upper differential ring (31) and the lower differential ring (32); the upper transmission belt (311) and the lower transmission belt (321) are respectively connected to the first drive duct (61) and the second drive duct (62).

2. A differential steering wheel structure according to claim 1, characterized in that: The wheel assembly (5) comprises a wheel bracket (51) and a wheel (52), and the wheel assembly (5) is fixedly mounted below the rotating fixture (4).

3. A differential steering wheel structure according to claim 1 or 2, characterized in that: The rotating fixture (4) is connected to the lower end of the main board (1), the differential rod (36) is connected to the spur gear (33), and the differential rod (36) passes through the rotating fixture (4) and the wheel bracket (51), the bevel gear (37) is fixedly installed on the bottom of the differential rod (36), the differential gear plate (38) is fixedly connected to the side of the wheel (52), and the bevel gear (37) is meshed with the differential gear plate (38).

4. The differential steering wheel structure according to claim 1, characterized in that: The number of the planetary gears (34) is multiple and the planetary gears (34) are meshed and connected with the spur gears (33).

5. The differential steering wheel structure according to claim 1, characterized in that: An encoder bracket (9) is fixedly mounted above the upper fixed plate (2), and an encoder box (91) is fixedly mounted in the encoder bracket (9).

6. The differential steering wheel structure according to claim 1, characterized in that: A groove (11) is provided on one side of the main board (1), and the groove (11) fits in contact with the outer surface of the cable box (63).

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