CN215110434U - Differential housing assembly - Google Patents

Abstract

The application discloses a differential shell assembly which comprises a shell body, a first connecting shaft, a second connecting shaft, a fixing shaft, a first bevel gear, a second bevel gear, a third bevel gear and a fourth bevel gear; the shell body is formed by mutually splicing a left shell and a right shell, a cavity is formed between the left shell and the right shell, and shaft holes penetrate through the left shell and the right shell along the left and the right directions; the first connecting shaft is rotatably arranged in the shaft hole at the left end, and the first bevel gear is integrally formed at the right end of the first connecting shaft; the second connecting shaft is rotatably arranged in a shaft hole at the right end, and the second bevel gear is integrally formed at the left end of the second connecting shaft; the fixed shaft is arranged in the cavity along the up-down direction, the third bevel gear and the fourth bevel gear are rotatably arranged on the fixed shaft, and the third bevel gear and the fourth bevel gear are respectively meshed with the first bevel gear and the second bevel gear. Simple structure, spare part is small in quantity, convenient assembling, the precision of mutually supporting between each part is high.

Description

Differential housing assembly

Technical Field

The application relates to the technical field of automobile parts, in particular to a differential shell assembly.

Background

With the continuous improvement of the living standard of people, the use of automobiles is popularized continuously, the requirements of users on the performance of the automobiles are higher and higher, and the differential is used as one of important components in an automobile transmission system and has the function of enabling left and right driving wheels to roll at different rotating speeds when the automobiles turn or run on uneven roads so as to ensure that the driving wheels at two sides do pure rolling motion and keep the balance of the two sides of the automobiles.

However, the existing differential housing assembly mainly has the following defects: 1. the structure is complex, the number of parts is large, the assembly operation difficulty is high, the precision of mutual matching among the parts is low, abrasion is easy to generate during high-speed rotation, and the service life is short; 2. The lubricating and heat dissipating effects between the rotating joint surfaces are poor, abrasion is easy to generate, and the service life of the whole body is shortened.

Therefore, it is an urgent need for those skilled in the art to improve the existing differential case assembly to overcome the above-mentioned shortcomings.

Disclosure of Invention

An aim at of this application provides a simple structure, spare part is small in quantity, convenient assembling, and the precision of mutually supporting between each part is high, and is lubricated and the radiating effect good, and long service life's differential mechanism housing assembly.

In order to achieve the above purposes, the technical scheme adopted by the application is as follows: a differential shell assembly comprises a shell body, a first connecting shaft, a second connecting shaft, a fixing shaft, a first bevel gear, a second bevel gear, a third bevel gear and a fourth bevel gear; the shell body is formed by mutually splicing a left shell and a right shell, a cavity is formed between the left shell and the right shell, and shaft holes penetrate through the left shell and the right shell along the left-right direction; the first connecting shaft is rotatably arranged in the shaft hole at the left end, and the first bevel gear is integrally formed at the right end of the first connecting shaft; the second connecting shaft is rotatably arranged in the shaft hole at the right end, and the second bevel gear is integrally formed at the left end of the second connecting shaft; the fixed shaft is arranged in the cavity along the vertical direction, the third bevel gear and the fourth bevel gear are rotatably arranged on the fixed shaft, the third bevel gear is respectively meshed with the first bevel gear and the second bevel gear, and the fourth bevel gear is respectively meshed with the first bevel gear and the second bevel gear.

Preferably, oil storage grooves of a spiral structure are arranged between the first connecting shaft and the shaft hole and between the second connecting shaft and the shaft hole.

Preferably, the oil reservoir is in communication with the cavity.

Preferably, the wear-resistant fabric further comprises a first annular wear-resistant sheet and a second annular wear-resistant sheet; the first annular wear-resistant sheet is sleeved on the first connecting shaft, and the left end surface and the right end surface of the first annular wear-resistant sheet are respectively connected to the left shell and the first bevel gear in a sliding manner; the second annular wear-resisting sheet is sleeved on the second connecting shaft, and the left end surface and the right end surface of the second annular wear-resisting sheet are respectively connected to the second bevel gear and the right shell in a sliding manner; and through holes penetrate through the first annular wear-resisting plate and the second annular wear-resisting plate along the left-right direction.

Preferably, the wear-resistant plate further comprises a third annular wear-resistant plate and a fourth annular wear-resistant plate; the third wear-resistant piece and the fourth wear-resistant piece are sleeved on the fixed shaft, the upper end face and the lower end face of the third wear-resistant piece are respectively connected to the inner wall of the cavity and the third bevel gear in a sliding mode, and the upper end face and the lower end face of the fourth wear-resistant piece are respectively connected to the fourth bevel gear and the inner wall of the cavity in a sliding mode.

Preferably, the third annular wearpad and the fourth annular wearpad are both spherical structures.

Preferably, the inner annular surfaces of the third annular wear-resistant piece and the fourth annular wear-resistant piece extend towards the inner side of the spherical structure to form a limiting portion, the upper end of the third bevel gear and the lower end of the fourth bevel gear are provided with limiting grooves, and the limiting portions are rotatably connected in the limiting grooves around the axis of the fixed shaft.

Preferably, the device further comprises an elastic C-shaped pin, a first mounting hole penetrates through the left shell or the right shell along the vertical direction, and a second mounting hole communicated with the first mounting hole is formed in the left shell or the right shell; the fixed shaft is arranged in the first mounting hole, and a third mounting hole is formed in the position, corresponding to the second mounting hole, of the fixed shaft; the C-shaped pin is clamped in the second mounting hole and the third mounting hole.

Preferably, the first connecting shaft and the second connecting shaft are both hollow structures, the right end of the first connecting shaft and the left end of the second connecting shaft are both provided with sealing covers, splines and first grooves are arranged on the inner wall of the first connecting shaft and the inner wall of the second connecting shaft along the circumferential direction, and second grooves are arranged on the inner wall of the first connecting shaft and the inner wall of the second connecting shaft along the axial direction.

Preferably, an opening communicated with the cavity is formed in the outer wall of the left shell and/or the right shell.

Compared with the prior art, the beneficial effect of this application lies in:

(1) because the shell body is formed by splicing the left shell and the right shell, the left shell and the right shell form a cavity therebetween, and the installation operation of each part in the cavity is convenient.

(2) Because the first bevel gear is integrally formed at the right end of the first connecting shaft and the second bevel gear is integrally formed at the left end of the second connecting shaft, the number of parts is effectively reduced, the assembly operation is convenient, and the integral assembly precision is improved.

(3) Under the effect of oil storage groove, can improve first connecting axle with between the shaft hole and the second connecting axle with the oil storage ability between the shaft hole, thereby improve the shaft hole with first connecting axle reaches lubricated effect and radiating effect between the second connecting axle are favorable to reducing wearing and tearing, increase of service life.

(4) Under the action of the first annular wear-resisting piece and the second annular wear-resisting piece, the first bevel gear and the second bevel gear can be effectively limited, so that the bevel gears are fully meshed, the assembly is convenient, and the stability is high; in addition, the first annular wear pad facilitates reducing wear of the first bevel gear and the left housing, and the second annular wear pad facilitates reducing wear of the second bevel gear and the right housing; meanwhile, the through holes formed in the first annular wear plate and the second annular wear plate can play a role in oil storage, so that the lubricating performance and the heat dissipation performance between the first annular wear plate and the first bevel gear as well as between the first annular wear plate and the left shell can be improved, and the lubricating performance and the heat dissipation performance between the second annular wear plate and the second bevel gear as well as between the second annular wear plate and the right shell can be improved.

(5) Under the action of the third annular wear-resistant piece and the fourth annular wear-resistant piece, the third bevel gear and the fourth bevel gear can be effectively limited, so that the bevel gears are fully meshed, the assembly is convenient, and the stability is high; in addition, the third annular wear plate is beneficial to reducing the abrasion of the third bevel gear and the inner wall of the cavity, and the fourth annular wear plate is beneficial to reducing the abrasion of the fourth bevel gear and the inner wall of the cavity.

(6) Under the action of the first mounting hole, the second mounting hole and the third mounting hole, the fixing shaft can be effectively locked through the C-shaped pin, and the fixing shaft can be simply and quickly assembled; meanwhile, the C-shaped pin has elasticity, so that the C-shaped pin cannot be easily separated from the second mounting hole and the third mounting hole, and the stability is high.

Drawings

FIG. 1 is a perspective view of a differential housing assembly provided herein.

FIG. 2 is an exploded view of the differential housing assembly of FIG. 1 as provided herein.

Fig. 3 is an exploded view of a portion of the structure of fig. 2, showing the left housing and components attached thereto, as provided herein.

Fig. 4 is a partial enlarged view at I in fig. 3 provided herein.

Fig. 5 is a partially enlarged view of the first connecting shaft of fig. 3 provided in the present application.

Fig. 6 is an exploded view of a portion of the structure of fig. 2, showing the right housing and components connected thereto, as provided by the present application.

Fig. 7 is an enlarged view of the C-shaped pin of fig. 6 provided herein.

FIG. 8 is a cross-sectional view of the differential housing assembly of FIG. 1 as provided herein.

Fig. 9 is a partial enlarged view of II in fig. 8 provided herein.

Fig. 10 is a partial enlarged view at III in fig. 8 provided herein.

In the figure: 1. a housing body; 11. a left housing; 12. a right housing; 13. a cavity; 14. a shaft hole; 15. an oil storage tank; 16. a first mounting hole; 17. a second mounting hole; 18. an opening; 19. a notch; 2. a first connecting shaft; 3. a second connecting shaft; 231. a sealing cover; 232. a spline; 233. a first groove; 234. a second groove; 4. a fixed shaft; 5. a first bevel gear; 6. a second bevel gear; 7. a third bevel gear; 8. a fourth bevel gear; 781. a limiting groove; 9. a C-shaped pin; 10. a first annular wearpad; 20. A second annular wear pad; 30. a third annular wear pad; 40. a fourth annular wearpad; 100. a through hole; 200. a limiting part.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1-10, one embodiment of the present application provides a differential housing assembly including a housing body 1, a first connecting shaft 2, a second connecting shaft 3, a fixed shaft 4, a first bevel gear 5, a second bevel gear 6, a third bevel gear 7, and a fourth bevel gear 8; the shell body 1 is formed by mutually splicing a left shell 11 and a right shell 12, a cavity 13 is formed between the left shell 11 and the right shell 12, and shaft holes 14 penetrate through the left shell 11 and the right shell 12 along the left-right direction; the first connecting shaft 2 is rotatably arranged in a shaft hole 14 at the left end, and the first bevel gear 5 is integrally formed at the right end of the first connecting shaft 2; the second connecting shaft 3 is rotatably arranged in a shaft hole 14 at the right end, and the second bevel gear 6 is integrally formed at the left end of the second connecting shaft 3; the fixed shaft 4 is arranged in the cavity 13 in the up-down direction, the third bevel gear 7 and the fourth bevel gear 8 are rotatably arranged on the fixed shaft 4, the third bevel gear 7 is meshed with the first bevel gear 5 and the second bevel gear 6 respectively, and the fourth bevel gear 8 is meshed with the first bevel gear 5 and the second bevel gear 6 respectively. Because the shell body 1 is formed by mutually splicing the left shell 11 and the right shell 12, and the cavity 13 is formed between the left shell 11 and the right shell 12, each part can be conveniently installed in the cavity 13; and because the first bevel gear 5 is integrally formed at the right end of the first connecting shaft 2 and the second bevel gear 6 is integrally formed at the left end of the second connecting shaft 3, the number of parts is effectively reduced, thereby facilitating the assembly operation and being beneficial to improving the integral assembly precision.

Referring to fig. 3 to 4, in some embodiments of the present application, an oil reservoir 15 having a spiral structure is disposed between the first connecting shaft 2 and the shaft hole 14, so that the oil reservoir 15 having a spiral structure can store lubricating oil; similarly, an oil reservoir 15 may be provided between the second connecting shaft 3 and the shaft hole 14. Under the effect of the oil storage groove 15, the oil storage capacity between the first connecting shaft 2 and the shaft hole 14 and between the second connecting shaft 3 and the shaft hole 14 can be improved, so that the lubricating effect and the heat dissipation effect between the shaft hole 14 and the first connecting shaft 2 and the second connecting shaft 3 are improved, the abrasion is reduced, and the service life is prolonged. Further, the oil storage tank 15 communicates with the cavity 13, for example, a notch 19 communicating with the oil storage tank 15 is provided on the end portion of the shaft hole 14, so that the lubricating oil in the cavity 13 can enter the oil storage tank 15 through the notch 19, the flowing capability of the lubricating oil in the oil storage tank 15 can be improved, and the lubricating effect and the heat dissipation effect can be further improved.

Referring to fig. 3, 6 and 8-9, in some embodiments of the present application, the differential case assembly further includes a first annular wear plate 10 and a second annular wear plate 20; the first annular wear-resistant sheet 10 is sleeved on the first connecting shaft 2, and the left end face and the right end face of the first annular wear-resistant sheet 10 are respectively connected to the left shell 11 and the first bevel gear 5 in a sliding manner; the second annular wear pad 20 is sleeved on the second connecting shaft 3, and the left end face and the right end face of the second annular wear pad 20 are respectively connected to the second bevel gear 6 and the right shell 12 in a sliding manner; the first annular wear-resistant plate 10 and the second annular wear-resistant plate 20 are provided with through holes 100 extending in the left-right direction. Under the action of the first annular wear-resisting piece 10 and the second annular wear-resisting piece 20, the first bevel gear 5 and the second bevel gear 6 can be effectively limited, so that the bevel gears are fully meshed, the assembly is convenient, and the stability is high; in addition, the first annular wear plate 10 is beneficial to reducing the abrasion of the first bevel gear 5 and the left shell 11, and the second annular wear plate 20 is beneficial to reducing the abrasion of the second bevel gear 6 and the right shell 12; meanwhile, the through holes 100 formed in the first annular wear plate 10 and the second annular wear plate 20 can perform an oil storage function, which is beneficial to improving the lubricating performance and the heat dissipation performance between the first annular wear plate 10 and the first bevel gear 5 and the left housing 11, and is beneficial to improving the lubricating performance and the heat dissipation performance between the second annular wear plate 20 and the second bevel gear 6 and the right housing 12.

Referring to fig. 6, 8 and 10, in some embodiments of the present application, the differential housing assembly further includes a third annular wear plate 30 and a fourth annular wear plate 40; the third wear-resistant piece and the fourth wear-resistant piece are both sleeved on the fixed shaft 4, the upper end face and the lower end face of the third wear-resistant piece are respectively connected to the inner wall of the cavity 13 and the third bevel gear 7 in a sliding mode, and the upper end face and the lower end face of the fourth wear-resistant piece are respectively connected to the fourth bevel gear 8 and the inner wall of the cavity 13 in a sliding mode. Under the action of the third annular wear-resistant piece 30 and the fourth annular wear-resistant piece 40, the third bevel gear 7 and the fourth bevel gear 8 can be effectively limited, so that the bevel gears are fully meshed, the assembly is convenient, and the stability is high; in addition, the third annular wear plate 30 is beneficial to reducing the abrasion of the third bevel gear 7 and the inner wall of the cavity 13, and the fourth annular wear plate 40 is beneficial to reducing the abrasion of the fourth bevel gear 8 and the inner wall of the cavity 13.

Referring to fig. 6 and 10, in some embodiments of the present application, the third annular wear plate 30 and the fourth annular wear plate 40 are both spherical structures, which not only increases the contact area of the rotating and combining surfaces, but also is beneficial to limiting the radial swinging of the fixed shaft 4, the third bevel gear 7 and the fourth bevel gear 8, thereby improving the stability and precision of rotation, reducing the wear amount during rotation, and prolonging the service life. Further, the inner annular surfaces of the third annular wear-resistant plate 30 and the fourth annular wear-resistant plate 40 extend to the inner side of the spherical structure to form a limiting portion 200, the upper end of the third bevel gear 7 and the lower end of the fourth bevel gear 8 are provided with limiting grooves 781, the limiting portion 200 is rotatably connected to the limiting grooves 781 around the axis of the fixed shaft 4, and the third annular wear-resistant plate 30 can be effectively limited through sliding limiting matching between the limiting portion 200 and the limiting grooves 781, so that deviation in the rotating process is avoided.

Referring to fig. 6-7 and 10, in some embodiments of the present application, the present application further includes an elastic C-shaped pin 9, a first mounting hole 16 is formed in the left housing 11 or the right housing 12 in a vertical direction, and a second mounting hole 17 communicated with the first mounting hole 16 is formed in the left housing 11 or the right housing 12; the fixed shaft 4 is in interference fit in the first mounting hole 16, and a third mounting hole 41 is formed in the position, corresponding to the second mounting hole 17, of the fixed shaft 4; the C-shaped pin 9 is clamped in the second mounting hole 17 and the third mounting hole 41. Under the action of the first mounting hole 16, the second mounting hole 17 and the third mounting hole 41, the fixing shaft 4 can be effectively locked through the C-shaped pin 9, and the fixing shaft 4 can be simply and quickly assembled; meanwhile, the C-shaped pin 9 has elasticity, so that the C-shaped pin 9 cannot be easily separated from the second mounting hole 17 and the third mounting hole 41, and the stability is high.

Referring to fig. 3 and 5-6, in some embodiments of the present disclosure, the first connecting shaft 2 and the second connecting shaft 3 are both hollow structures, the right end of the first connecting shaft 2 and the left end of the second connecting shaft 3 are both interference-assembled with a sealing cover 231, splines 232 and first grooves 233 are circumferentially disposed on inner walls of the first connecting shaft 2 and the second connecting shaft 3, and second grooves 234 are axially disposed on inner walls of the first connecting shaft 2 and the second connecting shaft 3. Wherein, the connection with the input/output shaft can be conveniently and rapidly realized through the spline 232; the first groove 233 and the second groove 234 can improve the oil storage capacity inside the first connecting shaft 2 and the second connecting shaft 3, so as to improve the heat dissipation capacity in the rotation process. In addition, under the action of the sealing cover 231, the lubricating oil in the cavity 13 is prevented from entering the first connecting shaft 2 and the second connecting shaft 3, so that the rotation resistance is increased, or the lubricating oil in the cavity 13 is prevented from leaking.

Referring to fig. 1-2, in some embodiments of the present application, the outer wall of the left housing 11 and/or the right housing 12 is provided with an opening 18 communicating with the cavity 13. By providing the opening 18, the differential case assembly can be submerged within the oil sump to increase the heat dissipation efficiency of the lubricating oil.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims (10)

1. A differential shell assembly comprises a shell body, a first connecting shaft, a second connecting shaft, a fixing shaft, a first bevel gear, a second bevel gear, a third bevel gear and a fourth bevel gear; the shell body is formed by mutually splicing a left shell and a right shell, a cavity is formed between the left shell and the right shell, and shaft holes penetrate through the left shell and the right shell along the left-right direction; the first connecting shaft is rotatably arranged in the shaft hole at the left end, and the first bevel gear is integrally formed at the right end of the first connecting shaft; the second connecting shaft is rotatably arranged in the shaft hole at the right end, and the second bevel gear is integrally formed at the left end of the second connecting shaft; the fixed shaft is arranged in the cavity along the vertical direction, the third bevel gear and the fourth bevel gear are rotatably arranged on the fixed shaft, the third bevel gear is respectively meshed with the first bevel gear and the second bevel gear, and the fourth bevel gear is respectively meshed with the first bevel gear and the second bevel gear.

2. A differential case assembly according to claim 1, wherein oil reservoirs of helical configuration are provided between said first connecting shaft and said shaft hole and between said second connecting shaft and said shaft hole.

3. The differential housing assembly as defined in claim 2, wherein said oil sump communicates with said cavity.

4. The differential housing assembly as defined in claim 1, further comprising a first annular wear pad and a second annular wear pad; the first annular wear-resistant sheet is sleeved on the first connecting shaft, and the left end surface and the right end surface of the first annular wear-resistant sheet are respectively connected to the left shell and the first bevel gear in a sliding manner; the second annular wear-resisting sheet is sleeved on the second connecting shaft, and the left end surface and the right end surface of the second annular wear-resisting sheet are respectively connected to the second bevel gear and the right shell in a sliding manner; and through holes penetrate through the first annular wear-resisting plate and the second annular wear-resisting plate along the left-right direction.

5. The differential housing assembly as defined in claim 1, further comprising a third annular wear plate and a fourth annular wear plate; the third annular wear-resistant piece and the fourth annular wear-resistant piece are sleeved on the fixed shaft, the upper end face and the lower end face of the third annular wear-resistant piece are respectively connected to the inner wall of the cavity and the third bevel gear in a sliding mode, and the upper end face and the lower end face of the fourth annular wear-resistant piece are respectively connected to the fourth bevel gear and the inner wall of the cavity in a sliding mode.

6. The differential housing assembly as defined in claim 5, wherein said third annular wear plate and said fourth annular wear plate are each of a spherical configuration.

7. The differential housing assembly according to claim 6, wherein said third annular wear plate and said fourth annular wear plate have a limiting portion extending from their inner surfaces toward the inside of said spherical structure, and wherein said third bevel gear has an upper end and said fourth bevel gear has a lower end provided with a limiting groove, and wherein said limiting portion is rotatably coupled to said limiting groove about the axis of said fixed shaft.

8. The differential case assembly according to claim 1, further comprising an elastic C-shaped pin, wherein a first mounting hole is formed in the left case or the right case in a vertical direction, and a second mounting hole communicated with the first mounting hole is formed in the left case or the right case; the fixed shaft is arranged in the first mounting hole, and a third mounting hole is formed in the position, corresponding to the second mounting hole, of the fixed shaft; the C-shaped pin is clamped in the second mounting hole and the third mounting hole.

9. The differential case assembly according to claim 1, wherein the first connecting shaft and the second connecting shaft are both hollow, the right end of the first connecting shaft and the left end of the second connecting shaft are both provided with a seal cap, the inner walls of the first connecting shaft and the second connecting shaft are circumferentially provided with splines and first grooves, and the inner walls of the first connecting shaft and the second connecting shaft are axially provided with second grooves.

10. A differential case assembly according to claim 1, wherein an opening communicating with said cavity is provided in an outer wall of said left case and/or said right case.

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