Anti-collision limited slip differential

Abstract

The utility model provides an anti-collision limited slip differential, belongs to the field of differentials, and solves the problems that the conventional limited slip differential is lack of a protective structure, a shell is easy to deform due to collision, and the normal work is influenced. The differential mechanism comprises an axle and a differential mechanism shell, the axle is sleeved with the differential mechanism shell, the axle extends into the differential mechanism shell, a half axle gear is installed at the tail end of the axle, fixing grooves are formed in the two ends of the differential mechanism shell, limiting frames are installed in the fixing grooves, a base shell is installed between the limiting frames, guide columns are arranged on the base shell, and buffer plates are installed on the guide columns. The buffer plate is provided with a guide rod which extends into the guide column, a buffer spring is arranged between the guide rod and the guide column, a buffer layer adheres to the outer surface of the buffer plate, the limiting frame is provided with a sliding groove, and the buffer plate is inserted into the sliding groove. The anti-collision structure has the advantages that the anti-collision structure is arranged outside the differential shell, multiple buffering is formed through the buffering plate and the buffering springs among the guiding columns and the guiding rods, external collision is counteracted, and the differential is protected.

Description

Technical Field

[0001] The utility model belongs to the field of differentials, and relates to a differential, in particular to an anti-collision limited-slip differential. Background Art

[0002] When a vehicle gets into a special situation, such as one wheel getting stuck in a mud pit, the differential will cause one wheel to rotate at high speed while the other wheel does not move, resulting in the vehicle being unable to move. After improvement, the existing differential will limit the speed of the half-axle gears in the differential to prevent the above situation.

[0003] When the vehicle is running, the vehicle will drive over some complex roads, or some small things will hit the differential under the high-speed rotation of the wheels. However, the speed-limiting differential lacks a protective structure, and the outer shell is prone to deformation during the impact, resulting in the limited-slip differential being unable to work properly, thus affecting the service life of the limited-slip differential.

[0004] For example, the spiral gear limited-slip differential with the application number 201920446253.X includes a differential housing, left and right half-axle sun gears and a plurality of left and right planet gears. The sun gears and planet gears are installed in the differential housing, the sun gears and planet gears are meshed, the left and right planet gears are meshed with each other in a staggered manner, a groove one is opened on the axial end surface of the left and right planet gears, an elastic member one is installed in the groove one, the elastic member one presses against the annular groove, and the other end abuts against the differential housing. A friction plate is arranged between the left and right sun gears, an elastic member two is arranged between the friction plates, a groove two is relatively arranged between the friction plates, and two friction plate sleeves are fixed sleeves.

[0005] The above patent prevents the vehicle from repeatedly transmitting torque when driving into complex and changeable sections by setting the elastic member one and the elastic member two, resulting in continuous limited-slip situations. However, there is no anti-collision structure outside the differential, and the outer shell may be damaged by collision when driving on complex sections. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a limited-slip differential with a protective structure to protect itself from being impacted in view of the above problems existing in the prior art.

[0007] The present utility model can be realized through the following technical solutions: An anti-collision limited-slip differential includes a wheel shaft and a differential housing. The differential housing is sleeved on the wheel shaft. The end of the wheel shaft extends into the differential housing and is provided with a half shaft gear. Fixed slots are opened at both ends of the differential housing, and a limit frame is installed on the fixed slots. A base shell is installed between the limit frames. A guiding column is provided on the base shell, and a buffer plate is installed on the guiding column. A buffer layer is adhesively fixed on the outer surface of the buffer plate. A sliding slot is provided on the limit frame, and the buffer plate is inserted into the sliding slot. A fixed disk is provided on the limit frame, and the fixed disk is installed in the fixed slot. Bolts penetrate through the fixed disk and the fixed slot.

[0008] In the above anti-collision limited-slip differential, annular grooves are opened at both ends of the differential housing. The limit frame is divided into a frame body one and a frame body two. A rotating pair is provided between the frame body one and the frame body two. Corresponding limit rings are provided on the frame body one and the frame body two, and the limit rings are inserted into the annular grooves.

[0009] In the above anti-collision limited-slip differential, a fixing part is provided on the frame body one, a groove is provided on the fixing part, a fixing block is provided on the frame body two, the fixing block is inserted into the groove, and screws penetrate through the fixing block and the fixing part. The screws are inserted into the base shell.

[0010] In the above anti-collision limited-slip differential, a limiting slot is opened beside the sliding slot, and a corresponding limiting part is provided on the buffer plate.

[0011] In the above anti-collision limited-slip differential, a buffer pad is provided on the limiting slot.

[0012] In the above anti-collision limited-slip differential, a guiding rod is provided on the buffer plate, a corresponding guiding hole is opened on the guiding column, and a buffer spring is installed in the guiding hole.

[0013] In the above anti-collision limited-slip differential, a limiting plate is provided at the end of the guiding rod.

[0014] In the above anti-collision limited-slip differential, the guiding rod is threadedly connected to the buffer plate.

[0015] Compared with the prior art, the advantages of the present utility model are as follows: An anti-collision structure is additionally installed outside the differential housing. Through the buffer layer of the buffer plate, the buffer spring provided between the guiding rod and the guiding column, and the buffer pad in the limiting slot, triple buffering is formed to ensure that when an external impact touches the differential, the impact is fully absorbed; the setting of the base shell is used to provide hard protection to prevent the impact on the differential from being reduced after the buffer structure fails to resist the impact. Description of the Drawings

[0016] Figure 1 is a three-dimensional view of the anti-collision limited-slip differential;

[0017] Figure 2 is a cross-sectional view of an anti-collision limited-slip differential;

[0018] Figure 3 is Figure 2 an enlarged view of the middle circle A;

[0019] Figure 4 is a three-dimensional view of the buffer plate of the anti-collision limited-slip differential;

[0020] Figure 5 is a three-dimensional view of the first frame of the anti-collision limited-slip differential;

[0021] Among them, 1, wheel axle; 11, half axle gear; 2, differential housing; 21, fixing groove; 22, annular groove; 3, limiting frame; 31, sliding groove; 32, first frame; 321, fixing part; 321a, groove; 33, second frame; 331, fixing block; 34, rotating pair; 35, limiting groove; 351, buffer pad; 36, fixing disk; 37, limiting ring; 4, base shell; 41, guiding column; 411, guiding hole; 5, buffer plate; 51, buffer layer; 52, limiting part; 53, guiding rod; 531, limiting plate; 6, screw; 7, buffer spring; 8, threaded connection; 9, bolt. Specific embodiments

[0022] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0023] As Figures 1 to 5 shown, the present invention can be realized through the following embodiments: An anti-collision limited-slip differential includes a wheel axle 1 and a differential housing 2. The differential housing 2 is sleeved on the wheel axle 1. The end of the wheel axle 1 extends into the differential housing 2 and is provided with a half axle gear 11. Fixing grooves 21 are opened at both ends of the differential housing 2. A limiting frame 3 is installed on the fixing grooves 21. A base shell 4 is installed between the limiting frames 3. A guiding column 41 is provided on the base shell 4. A buffer plate 5 is installed on the guiding column 41. A buffer layer 51 is adhesively fixed on the outer surface of the buffer plate 5. A sliding groove 31 is provided on the limiting frame 3. The buffer plate 5 is inserted into the sliding groove 31. A fixing disk 36 is provided on the limiting frame 3. The fixing disk 36 is installed in the fixing groove 21. A bolt 9 penetrates through the fixing disk 36 and the fixing groove 21.

[0024] The limiting frame 3 restricts the displacement of the base shell 4 by squeezing at both ends of the base shell 4, preventing the base shell 4 from displacing due to the vibration generated during vehicle operation; the guide post 41 is installed with the buffer plate 5, and the buffer plate 5 is supported by the guide post 41 to prevent the buffer plate 5 from shifting due to external impact, ensuring that the buffer plate 5 can provide continuous buffer protection; the buffer layer 51 is the main buffer component on the buffer plate 5 for achieving buffering on the buffer plate 5, and the buffer plate 5 is mainly used to support the buffer layer 51 and connect with other components; the sliding groove 31 is used to guide the buffer plate 5 to prevent the buffer plate 5 from shifting during movement, causing a flying object to drill in through the gap and directly impact the differential housing 2; the fixed plate 36 is fixed on the fixed groove 21 by bolts 9 to prevent the limiting frame 3 from rotating.

[0025] As Figures 1 to 3 shown, annular grooves 22 are provided at both ends of the differential housing 2. The limiting frame 3 is divided into a frame body one 32 and a frame body two 33. A rotating pair 34 is provided between the frame body one 32 and the frame body two 33. Corresponding limiting rings 37 are provided on the frame body one 32 and the frame body two 33, and the limiting rings 37 are inserted into the annular grooves 22. A rotating pair 34 is provided between the frame body one 32 and the frame body two 33, enabling the frame body one 32 and the frame body two 33 to rotate relative to each other, facilitating the installation and disassembly of the limiting frame 3 by bypassing the wheel axle 1 and facilitating the maintenance of the anti-collision structure; the limiting rings 37 cooperate with the annular grooves 22 to prevent the limiting frame 3 from having axial displacement when the limiting frame 3 is installed on the differential housing 2.

[0026] As Figure 1 and Figure 5 shown, a fixing portion 321 is provided on the frame body one 32, a groove 321a is provided on the fixing portion 321, a fixing block 331 is provided on the frame body two 33, the fixing block 331 is inserted into the groove 321a, and a screw 6 passes through the fixing block 331 and the fixing portion 321 and is inserted into the base shell 4. The screw 6 passes through between the fixing portion 321 and the fixing block 331 to connect the frame body one 32 and the frame body two 33 of the limiting frame 3 into a whole. At the same time, the screw 6 is inserted into the base shell 4, connecting the base shell 4 and the limiting frame 3 into a whole to prevent relative rotation between the base shell 4 and the differential housing 2.

[0027] As Figure 2 and Figure 4 shown, a limiting groove 35 is provided beside the sliding groove 31, and a corresponding limiting portion 52 is provided on the buffer plate 5. The limiting groove 35 cooperates with the limiting portion 52. When the buffer plate 5 absorbs impact and slides down, in order to prevent the buffer plate 5 from squeezing the guide post 41 and causing deformation of the guide post 41, the limiting portion 52 and the limiting groove 35 enable the buffer plate 5 to bear the impact and protect the guide post 41.

[0028] As Figure 2As shown, a buffer pad 351 is provided on the limit groove 35. The buffer pad 351 is used to buffer when the limit groove 35 contacts the limit portion 52, absorb the impact force brought by the buffer plate 5, prevent the buffer plate 5 from being damaged when the limit portion 52 directly contacts the limit groove 35, and extend the service life of the buffer plate 5.

[0029] As Figure 2 shown, a guide rod 53 is provided on the buffer plate 5, a corresponding guide hole 411 is opened on the guide post 41, and a buffer spring 7 is installed in the guide hole 411. The guide rod 53 guides the buffer plate 5 to slide in the guide hole 411 to prevent the buffer plate 5 from slipping off; the buffer spring 7 is used to absorb the impact force transmitted by the buffer plate 5, cooperate with the buffer layer 51 to absorb the impact force, and ensure the reset of the buffer plate 5 to ensure that the buffer function of the buffer plate 5 and the buffer spring 7 can work continuously.

[0030] As Figure 2 shown, a limit plate 531 is provided at the end of the guide rod 53. The limit plate 531 is used to limit the displacement of the guide rod 53 to prevent the guide rod 53 from passing through the guide hole 411, resulting in the buffer plate 5 being unable to move normally, and further causing the anti-collision structure to fail.

[0031] As Figure 2 shown, the guide rod 53 and the buffer plate 5 are connected by a threaded connection 8. The guide rod 53 and the buffer plate 5 are connected by a threaded connection 8. The staff can rely on the limit plate 531 to prevent the guide rod 53 from being disassembled together with the buffer plate 5, which is convenient for separating and installing the buffer plate 5 from the guide rod 53, and speeds up the replacement of the damaged buffer plate 5.

[0032] The working principle of the present utility model: When the differential is externally impacted, the buffer plate 5 contacts the impact. After the buffer layer 51 absorbs the impact, the excess impact pushes the buffer plate 5 to move, causing the guide rod 53 connected to the buffer plate 5 to move in the guide post 41. The limit plate 531 of the guide post 41 touches and compresses the buffer spring 7, and the spring absorbs the impact force; when there is still excess impact force, the limit portion 52 on the buffer plate 5 will contact the limit groove 35, and a buffer pad 351 is installed on the limit groove 35. The buffer pad 351 further absorbs the impact force. If there are fine flying objects flying into the anti-collision structure when the buffer plate 5 is displaced, the base shell 4 and the limit frame 3 will also play a protective role.

[0033] 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 belongs can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

[0034] Although various terms are used more frequently in this text, the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present utility model; any interpretation of them as an additional limitation is contrary to the spirit of the present utility model.

Claims

1. An anti-collision limited-slip differential, comprising a wheel axle (1) and a differential housing (2), the differential housing (2) being sleeved on the wheel axle (1), the end of the wheel axle (1) extending into the differential housing (2) and being provided with a side gear (11), characterized in that: Both ends of the differential housing (2) are provided with fixing grooves (21). A limiting frame (3) is installed on the fixing grooves (21). A base shell (4) is installed between the limiting frames (3). A guiding column (41) is arranged on the base shell (4). A buffer plate (5) is installed on the guiding column (41). A buffer layer (51) is adhesively fixed on the outer surface of the buffer plate (5). A sliding groove (31) is arranged on the limiting frame (3). The buffer plate (5) is inserted into the sliding groove (31). A fixing disk (36) is arranged on the limiting frame (3). The fixing disk (36) is installed in the fixing groove (21). A bolt (9) penetrates through the fixing disk (36) and the fixing groove (21).

2. The anti-collision limited-slip differential according to claim 1, characterized in that, Both ends of the differential housing (2) are provided with annular grooves (22). The limiting frame (3) is divided into a frame body one (32) and a frame body two (33). A rotating pair (34) is arranged between the frame body one (32) and the frame body two (33). Corresponding limiting rings (37) are arranged on the frame body one (32) and the frame body two (33). The limiting rings (37) are inserted into the annular grooves (22).

3. The anti-collision limited-slip differential according to claim 2, characterized in that, A fixing part (321) is arranged on the frame body one (32). A groove (321a) is arranged on the fixing part (321). A fixing block (331) is arranged on the frame body two (33). The fixing block (331) is inserted into the groove (321a). A screw (6) penetrates through the fixing block (331) and the fixing part (321). The screw (6) is inserted into the base shell (4).

4. An anti-collision limited-slip differential according to claim 1, wherein A limiting groove (35) is arranged beside the sliding groove (31). A corresponding limiting part (52) is arranged on the buffer plate (5).

5. An anti-collision limited-slip differential according to claim 4, characterized in that, A buffer pad (351) is arranged on the limiting groove (35).

6. An anti-collision limited-slip differential according to claim 1, characterized in that, A guiding rod (53) is arranged on the buffer plate (5). A corresponding guiding hole (411) is arranged on the guiding column (41). A buffer spring (7) is installed in the guiding hole (411).

7. The anti-collision limited-slip differential according to claim 6, wherein, A limiting plate (531) is arranged at the end of the guiding rod (53).

8. An anti-collision limited-slip differential according to claim 6, characterized in that, The guiding rod (53) and the buffer plate (5) are connected by a threaded connection (8).

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