Vehicle-mounted differential mechanism

Abstract

The utility model provides a vehicle-mounted differential mechanism, and belongs to the technical field of automobile accessories. The problems that in the prior art, an automobile differential is insufficient in stability and prone to abrasion are solved. The differential mechanism comprises a first outer shell, a second outer shell and a differential mechanism assembly, the first outer shell is fixedly connected with the second outer shell, the first outer shell and the second outer shell are arranged outside the differential mechanism assembly in a covering mode, the differential mechanism assembly comprises a differential mechanism shell, a driven gear disc, a left half shaft, a right half shaft and an input shaft, and driven teeth are arranged on the periphery of the driven gear disc. A plurality of connecting columns are fixedly connected into the differential mechanism shell, the differential mechanism shell is fixedly installed on the driven gear disc through the connecting columns, a first fixing pin and a second fixing pin are fixedly installed in the differential mechanism shell, and the first fixing pin and the second fixing pin are fixed in a cross shape. A first planetary gear and a second planetary gear are fixed to the two ends of the first fixing pin and the two ends of the second fixing pin respectively, a left straight bevel gear and a right straight bevel gear are fixedly installed at one end of the left half shaft and one end of the right half shaft respectively, and the left straight bevel gear and the right straight bevel gear are meshed with the first planetary gear and the second planetary gear respectively. The utility model has the advantages that the stability is high, the shell is not easy to wear, and the service life is long.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile accessories and relates to a vehicle-mounted differential. Background Art

[0002] The differential is a mechanical device that is usually used in the vehicle's transmission system. It is mainly used to solve the problems of driving force distribution and speed differences between tires when turning.

[0003] A Chinese patent with publication number CN203404333U discloses a differential, including a housing with a planetary gear shaft inserted therein, a pin hole being inserted into the housing to connect the planetary gear shaft and the housing, a transparent snap-in hole being provided on the inner wall at the end of the pin hole, a fixing cap being inserted into the pin hole after being inserted into the pin, the fixing cap being used to prevent the pin from coming out, an elastic snap-in piece being provided on the fixing cap that pops out and extends into the snap-in hole, a central blind hole being provided at one end of the fixing cap, and one end of the pin being inserted into the central blind hole.

[0004] The patent provides a differential that lacks a positioning device inside and is not installed or structurally configured to reduce wear. It lacks stability and is prone to wear during use, which affects its service life. Utility Model Content

[0005] The purpose of the utility model is to provide a vehicle-mounted differential in view of the above-mentioned problems existing in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a vehicle-mounted differential, comprising a first outer shell, a second outer shell and a differential assembly, wherein the first outer shell and the second outer shell are fixedly connected and the first outer shell and the second outer shell are covered outside the differential assembly, wherein the differential assembly comprises a differential case, a driven gear plate, a left half shaft, a right half shaft and an input shaft, wherein the outer periphery of the driven gear plate is arranged as a driven tooth, a plurality of connecting columns are fixedly connected inside the differential case, and the differential case is fixedly mounted on the driven gear plate through the connecting columns, a first fixing pin and a second fixing pin are fixedly mounted inside the differential case, the first fixing pin and the second fixing pin are fixed in a cross shape, and a first planetary gear and a second planetary gear are fixed at both ends of the first fixing pin and the second fixing pin, respectively, a left straight bevel gear and a right straight bevel gear are fixedly mounted at one end of the left half shaft and the right half shaft, respectively, the left straight bevel gear and the right straight bevel gear are meshed with the first planetary gear and the second planetary gear, and the left half shaft and the right half shaft extend out of the two ends of the first outer shell and the second outer shell, respectively.

[0007] In the above-mentioned vehicle-mounted differential, a first limiting groove and a second limiting groove are respectively formed in the middle of the first fixing pin and the second fixing pin, and the first fixing pin and the second fixing pin are fixedly connected via the first limiting groove and the second limiting groove.

[0008] In the above-mentioned vehicle-mounted differential, a left differential bearing and a right differential bearing are fixedly mounted on the left half shaft and the right half shaft.

[0009] In the above-mentioned vehicle-mounted differential, a first bearing groove and a second bearing groove are respectively formed on the first outer shell and the second outer shell.

[0010] In the above-mentioned vehicle-mounted differential, a driving gear is fixedly mounted on one end of the input shaft, the driving gear is meshed with the driven gear, and a plurality of protective bearings are sleeved and fixed on the input shaft.

[0011] In the above-mentioned vehicle-mounted differential, a seat body is formed on the first outer shell, and a through connecting hole is opened on the first outer shell.

[0012] Compared with the prior art, the vehicle-mounted differential provided by the utility model has the following beneficial effects: 1. The first outer shell and the second outer shell are structurally arranged to cover the outside of the differential assembly, thereby effectively protecting the safety of the differential assembly during use; 2. The first fixing pin and the second fixing pin are fixed in a cross-shaped manner through the first limiting groove and the second limiting groove, and two first planetary gears and two second planetary gears are fixed at both ends of the first fixing pin and the second fixing pin, respectively, so that the operation efficiency of the differential assembly is higher and the structure is more stable; 3. The structure of providing the first bearing groove and the second bearing groove on the first outer shell and the second outer shell prevents the left differential bearing and the right differential bearing from contacting with the first outer shell and the second outer shell, thereby avoiding the wear of the first outer shell and the second outer shell during use. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the exploded structure of the differential assembly.

[0016] In the figure: 1. first outer shell; 11. first bearing groove; 12. seat body; 13. connecting hole; 2. second outer shell; 21. second bearing groove; 3. differential assembly; 31. differential housing; 311. connecting column; 32. driven gear plate; 321. driven gear; 33. left half shaft; 331. left straight bevel gear; 332. left differential bearing; 34. right half shaft; 341. right straight bevel gear; 342. right differential bearing; 35. input shaft; 351. driving gear; 352. protective bearing; 36. first fixing pin; 361. first limiting groove; 37. second fixing pin; 371. second limiting groove; 38. first planetary gear; 39. second planetary gear. DETAILED DESCRIPTION

[0017] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0018] like Figures 1 to 3 As shown, this embodiment includes a first outer shell 1, a second outer shell 2 and a differential assembly 3, the first outer shell 1 and the second outer shell 2 are fixedly connected by bolts and the first outer shell 1 and the second outer shell 2 are covered on the outside of the differential assembly 3, the differential assembly 3 includes a differential case 31, a driven gear plate 32, a left half shaft 33, a left straight bevel gear 331, a right half shaft 34, a right straight bevel gear 341, an input shaft 35, a driving gear 351, a first fixing pin 36 and a second fixing pin 37, the outer periphery of the driven gear plate 32 is provided with a driven gear 321, the driving gear 351 is connected to one end of the input shaft 35 and the driving gear 351 is meshed with the driven gear 321, the input shaft 35 and the driving gear 351 rotate to drive the driven gear plate 32 to operate, a plurality of connecting columns 311 are fixedly connected inside the differential case 31, and the differential case 31 is fixedly mounted on the driven gear plate 32 through the connecting columns 311.

[0019] like Figures 2 to 3 As shown, the first fixing pin 36 and the second fixing pin 37 are fixedly installed inside the differential housing 31, and the first fixing pin 36 and the second fixing pin 37 are respectively provided with a first limiting groove 361 and a second limiting groove 371 in the middle thereof, and the first fixing pin 36 and the second fixing pin 37 are fixed in a cross shape through the first limiting groove 361 and the second limiting groove 371. The number of the first planetary gear 38 and the second planetary gear 39 are both two, and the first planetary gear 38 and the second planetary gear 39 are respectively fixed at both ends of the first fixing pin 36 and the second fixing pin 37, and the left straight bevel gear 331 and the right straight bevel gear 341 are respectively fixedly installed on the inner ends of the left half shaft 33 and the right half shaft 34, and the left straight bevel gear 331 and the right straight bevel gear 341 are respectively meshed with the first planetary gear 38 and the second planetary gear 39.

[0020] To elaborate further, Figure 3 As shown, the first limiting groove 361 and the second limiting groove 371 are completely identical, and the depths of the first limiting groove 361 and the second limiting groove 371 are the same as the radii of the first fixing pin 36 and the second fixing pin 37 .

[0021] like Figure 1 to Figure 2 As shown, a semicircular first bearing groove 11 and a second bearing groove 21 are respectively provided on both sides of the first outer shell 1 and the second outer shell 2, and the outer ends of the left half shaft 33 and the right half shaft 34 extend out of the two ends of the first outer shell 1 and the second outer shell 2. A left differential bearing 332 and a right differential bearing 342 are sleeved and fixed on the left half shaft 33 and the right half shaft 34 at the connection with the first outer shell 1 and the second outer shell 2, and a gap is left between the left differential bearing 332 and the right differential bearing 342 and the first bearing groove 11 and the second bearing groove 21, so that the operation of the left differential bearing 332 and the right differential bearing 342 will not cause wear of the first outer shell 1 and the second outer shell 2.

[0022] To elaborate further, Figures 1 to 3 As shown, a seat body 12 is integrally formed on the first outer shell 1, and a through connecting hole 13 is opened inside the seat body 12. The seat body 12 fixes the input shaft 35 through the internal connecting hole 13. A plurality of protective bearings 352 are sleeved on the input shaft 35. The protective bearings 352 are also located in the connecting hole 13. The input shaft 35 extends out of the seat body 12 through the connecting hole 13.

[0023] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0024] Although various terms are used more frequently 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 utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A vehicle-mounted differential, characterized in that: The invention comprises a first outer shell (1), a second outer shell (2) and a differential assembly (3), wherein the first outer shell (1) and the second outer shell (2) are fixedly connected and the first outer shell (1) and the second outer shell (2) are covered on the outside of the differential assembly (3), wherein the differential assembly (3) comprises a differential housing (31), a driven gear plate (32), a left half shaft (33), a right half shaft (34) and an input shaft (35), wherein the outer periphery of the driven gear plate (32) is provided with driven teeth (321), wherein a plurality of connecting columns (311) are fixedly connected inside the differential housing (31), wherein the differential housing (31) is fixedly mounted on the driven gear plate (32) via the connecting columns (311), and wherein the inside of the differential housing (31) A first fixing pin (36) and a second fixing pin (37) are fixedly installed. The first fixing pin (36) and the second fixing pin (37) are fixed in a cross shape. The first fixing pin (36) and the second fixing pin (37) are respectively fixed with a first planetary gear (38) and a second planetary gear (39) at both ends. A left straight bevel gear (331) and a right straight bevel gear (341) are respectively fixedly installed at one end of the left half shaft (33) and the right half shaft (34). The left straight bevel gear (331) and the right straight bevel gear (341) are respectively meshed with the first planetary gear (38) and the second planetary gear (39). The left half shaft (33) and the right half shaft (34) extend out of both ends of the first outer shell (1) and the second outer shell (2).

2. The vehicle-mounted differential according to claim 1, characterized in that: A first limiting groove (361) and a second limiting groove (371) are respectively formed in the middle of the first fixing pin (36) and the second fixing pin (37), and the first fixing pin (36) and the second fixing pin (37) are fixedly connected via the first limiting groove (361) and the second limiting groove (371).

3. The vehicle-mounted differential according to claim 1, characterized in that: A left differential bearing (332) and a right differential bearing (342) are sleeved and fixed on the left half shaft (33) and the right half shaft (34).

4. The vehicle-mounted differential according to claim 1, characterized in that: The first outer shell (1) and the second outer shell (2) are respectively provided with a first bearing groove (11) and a second bearing groove (21).

5. The vehicle-mounted differential according to claim 1, characterized in that: A driving gear (351) is fixedly mounted on one end of the input shaft (35), the driving gear (351) is meshed with the driven gear (321), and a plurality of protective bearings (352) are sleeved and fixed on the input shaft (35).

6. The vehicle-mounted differential according to claim 1, characterized in that: A seat body (12) is formed on the first outer shell (1), and a through connection hole (13) is opened on the first outer shell (1).

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