Electromagnetic differential lock rear axle

Abstract

The utility model provides a kind of electromagnetic differential lock rear axle, belong to vehicle power transmission technical field.It solves the problem of existing differential lock big volume, big mass, the electromagnetic differential lock rear axle of the present utility model, including shell, transmission bevel gear set, differential assembly and electromagnetic lock unit, transmission bevel gear set, differential assembly are placed in shell, shell one end is equipped with end cover, electromagnetic lock unit is embedded in end cover inside, electromagnetic lock unit is equipped with solenoid valve, annular push rod is equipped on the inner wall of solenoid valve, annular push rod is equipped with resistance to contact boss, resistance to contact boss side and annular push rod resistance, transmission bevel gear set is equipped with bevel gear shaft and bevel gear disc, bevel gear disc is fixed on the outer wall of differential assembly, and the inner wall of the bevel gear disc is equipped with transmission spline, transmission spline is equipped with the engagement sleeve of axial activity, engagement sleeve one end is equipped with engagement tooth, differential assembly is equipped with several differential bevel gears, differential bevel gear end is equipped with engagement tooth, the utility model has the advantages of small volume, small weight, fast response.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle power transmission technology, and relates to a differential lock rear axle, particularly an electromagnetic differential lock rear axle. Background Technology

[0002] A differential lock rear axle adds a device to a standard differential rear axle that can manually or automatically lock the differential. When one drive wheel slips, the differential lock forcibly locks the left and right half-shafts together, preventing power from flowing to the spinning wheel and instead distributing it to the wheels that still have traction. This greatly improves the vehicle's ability to get out of trouble in muddy, icy, and other harsh road conditions.

[0003] Traditional mechanical differential locks, typically referring to dog-clutch differential locks, are purely rigid connection devices. When manually engaged by the driver, they use metal toothed rings to forcibly lock the differential housing to one half-shaft, making the left and right wheels rigidly connected and ensuring stable power transmission to both wheels. However, the mechanical structure requires multiple transmission components to form a control pile and needs space to allow the mechanical parts to move, resulting in traditional differential lock rear axles being large, heavy, and costly to produce. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a small-sized and lightweight electromagnetic differential lock rear axle.

[0005] The objective of this utility model can be achieved through the following technical solution: An electromagnetic differential lock rear axle, characterized in that it includes a housing, a transmission bevel gear set, a differential assembly, and an electromagnetic locking unit. The transmission bevel gear set and the differential assembly are placed inside the housing. One end of the housing is provided with an end cap. The electromagnetic locking unit is fitted inside the end cap. The electromagnetic locking unit is provided with an electromagnetic valve. An annular push rod is provided on the inner wall of the electromagnetic valve. An abutting boss is provided on the annular push rod. One side of the abutting boss abuts against the annular push rod. The transmission bevel gear set is provided with a bevel gear shaft and a bevel gear disk. The bevel gear disk is fixed on the outer wall of the differential assembly. A transmission spline is provided on the inner wall of the bevel gear disk. An axially movable engagement sleeve is provided on the transmission spline. One end of the engagement sleeve is provided with engagement teeth. The differential assembly is provided with a plurality of differential bevel teeth. The ends of the differential bevel teeth are provided with engagement teeth.

[0006] In the aforementioned electromagnetic differential lock rear axle, the end of the annular push rod is provided with a supporting protrusion.

[0007] In the aforementioned electromagnetic differential lock rear axle, a connecting bearing is provided between the bevel gear disc, the differential assembly, and the housing.

[0008] In the aforementioned electromagnetic differential lock rear axle, the differential bevel gear, engagement sleeve, annular push rod, and solenoid valve are all provided with through and concentric shaft holes.

[0009] In the aforementioned electromagnetic differential lock rear axle, the end cover has a side hole, and the solenoid valve has a cable.

[0010] Compared with existing technologies, this electromagnetic differential lock rear axle uses a solenoid valve to control a ring push rod to achieve the transmission connection between the transmission bevel gear and the differential, reducing the large size and weight caused by the mechanical structure. This allows the differential lock to adapt to more usage scenarios. At the same time, the solenoid valve has a fast response speed, enabling the vehicle to lock on one side in a timely manner to help the vehicle get out of trouble. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the rear axle of the electromagnetic differential lock.

[0012] Figure 2 This is a schematic diagram of the rear axle section of this electromagnetic differential lock.

[0013] In the diagram, 1. Housing; 2. Cable; 3. Side hole; 4. End cover; 5. Bevel gear shaft; 6. Differential bevel gear; 7. Shaft hole; 8. Connecting bearing; 9. Differential assembly; 10. Transmission spline; 11. Abutting boss; 12. Solenoid valve; 13. Solenoid locking unit; 14. Annular push rod; 15. Engaging teeth; 16. Supporting convex ring; 17. Bevel gear disc; 18. Transmission bevel gear set; 19. Engaging sleeve. Detailed Implementation

[0014] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0015] like Figure 1 , 2As shown, this electromagnetic differential lock rear axle includes a housing 1, a transmission bevel gear set 18, a differential assembly 9, and an electromagnetic locking unit 13. The transmission bevel gear set 18 and the differential assembly 9 are housed within the housing 1. One end of the housing 1 is provided with an end cap 4. The electromagnetic locking unit 13 is fitted inside the end cap 4. The electromagnetic locking unit 13 is provided with a solenoid valve 12. An annular push rod 14 is provided on the inner wall of the solenoid valve 12. An abutment boss 11 is provided on the annular push rod 14. One side of the abutment boss 11 abuts against the annular push rod 14. The transmission bevel gear set 18 is provided with a bevel gear shaft 5 and a bevel gear disk 17. The bevel gear disk 17 is fixed to the outer wall of the differential assembly 9, and a transmission spline 10 is provided on the inner wall of the bevel gear disk 17. The moving spline 10 is provided with an axially movable engagement sleeve 19. One end of the engagement sleeve 19 is provided with engagement teeth 15. The differential assembly 9 is provided with several differential bevel teeth 6. The end of the differential bevel teeth 6 is provided with engagement teeth 15. When locking is required, the solenoid valve 12 is activated, pushing the annular push rod 14 to move axially. The engagement sleeve 19, which is in contact with the annular push rod 14, moves axially along the transmission spline 10. Through the mutual engagement of the engagement teeth 15, the transmission connection is realized. The differential bevel teeth 6 on one side of the differential assembly 9 are poweredly connected to the bevel disc 17 to realize differential locking. When the differential is canceled, the solenoid valve 12 is retracted, the annular push rod 14 and the engagement sleeve 19 retract, and the engagement teeth 15 disengage to achieve unlocking.

[0016] Preferably, the end of the annular push rod 14 is provided with a support protrusion 16. The annular push rod 14 abuts against the engagement sleeve 19 through the support protrusion 16, and the support protrusion 16 abuts against the minor diameter of the transmission spline 10, thereby reducing the shaking of the annular push rod 14 during rotation.

[0017] Preferably, a connecting bearing 8 is provided between the bevel gear disc 17, the differential assembly 9 and the housing 1.

[0018] Preferably, the differential bevel gear 6, the engagement sleeve 19, the annular push rod 14, and the solenoid valve 12 are all provided with through and concentric shaft holes 7.

[0019] Preferably, the end cap 4 has a side hole 3, and the solenoid valve 12 has a cable 2, which is connected to the outside through the side hole 3.

[0020] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0021] Although this document frequently uses terms such as housing 1, cable 2, side hole 3, end cover 4, bevel shaft 5, differential bevel gear 6, shaft hole 7, connecting bearing 8, differential assembly 9, transmission spline 10, contact boss 11, solenoid valve 12, electromagnetic locking unit 13, ring push rod 14, meshing tooth 15, support ring 16, bevel disc 17, transmission bevel gear set 18, and meshing sleeve 19, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. An electromagnetic differential lock rear axle, characterized in that, The system includes a housing (1), a transmission bevel gear set (18), a differential assembly (9), and an electromagnetic locking unit (13). The transmission bevel gear set (18) and the differential assembly (9) are housed inside the housing (1). One end of the housing (1) is provided with an end cap (4). The electromagnetic locking unit (13) is fitted inside the end cap (4). The electromagnetic locking unit (13) is provided with a solenoid valve (12). The inner wall of the solenoid valve (12) is provided with an annular push rod (14). The annular push rod (14) is provided with an abutment boss (11). 11) One side abuts against the ring push rod (14). The transmission bevel gear set (18) is provided with a bevel gear shaft (5) and a bevel gear disk (17). The bevel gear disk (17) is fixed on the outer wall of the differential assembly (9), and the inner wall of the bevel gear disk (17) is provided with a transmission spline (10). The transmission spline (10) is provided with an axially movable engagement sleeve (19). One end of the engagement sleeve (19) is provided with engagement teeth (15). The differential assembly (9) is provided with several differential bevel teeth (6). The end of the differential bevel teeth (6) is provided with engagement teeth (15).

2. The electromagnetic differential lock rear axle according to claim 1, characterized in that, The annular push rod (14) is provided with a support protrusion (16) at its end.

3. The electromagnetic differential lock rear axle according to claim 1, characterized in that, The bevel gear disc (17), the differential assembly (9), and the housing (1) are all provided with connecting bearings (8).

4. The electromagnetic differential lock rear axle according to claim 1, characterized in that, The differential bevel gear (6), engagement sleeve (19), annular push rod (14) and solenoid valve (12) are all provided with through and concentric shaft holes (7).

5. The electromagnetic differential lock rear axle according to claim 1, characterized in that, The end cap (4) is provided with a side hole (3), and the solenoid valve (12) is provided with a cable (2).

Images