CN210600093U

CN210600093U - Differential mechanism for drive axle

Info

Publication number: CN210600093U
Application number: CN201921181675.5U
Authority: CN
Inventors: 钱浩; 黄凯思; 侯娜; 郭志英; 冯忠义; 孟凡超
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-05-22
Anticipated expiration: 2029-07-25

Abstract

The utility model relates to a differential mechanism lubrication technology field discloses a differential mechanism for transaxle, it includes half shaft gear, the semi-axis, a housing, the semi-axis runs through the casing setting, be equipped with the installation cavity on the casing, half shaft gear locates the installation cavity and cuts apart into two at least oil collecting chambers with the installation cavity, two at least oil collecting chambers communicate mutually, all be equipped with first gasket between casing and the half shaft gear, be equipped with the oil groove just to first gasket setting on the casing, oil groove and oil collecting chamber intercommunication, the tip cover of casing is equipped with and keeps off the oil subassembly, it is configured to blockking spilling of the fluid of oil collecting the intracavity to keep off the oil subassembly. The utility model provides a differential mechanism for drive axle has cancelled the casting oilhole on the casing, and the oil groove of addding realizes the continuous supply of the inside fluid of differential mechanism for drive axle under abominable operating mode with the cooperation of oil trap on the casing, and then is showing the performance and the life-span that promote differential mechanism for drive axle.

Description

Differential mechanism for drive axle

Technical Field

The utility model relates to a differential mechanism lubrication technology field especially relates to a differential mechanism for transaxle.

Background

Modern vehicles are equipped with a differential mechanism that operates to adjust the difference in rotational speed between the left and right drive wheels when the vehicle is traveling around a curve or on an uneven road surface. A typical gear type differential generally comprises a differential shell, a half axle gear gasket, a planetary gear gasket, a cross shaft and other parts, and by the structure, different quantities of casting holes are formed in the differential shell, so that oil inside a drive axle splashes and enters the differential in the running process of a vehicle, and the purpose of lubrication is further achieved.

However, when the vehicle continuously runs at a high speed on an uneven road or continuously turns, the differential needs to work under a high load for a long time, and at the moment, if oil splashed into the differential through the casing casting hole cannot continuously lubricate and move in the differential, the problems of gear sintering, gasket abrasion aggravation and the like are caused, and the normal running of the vehicle is seriously influenced.

SUMMERY OF THE UTILITY MODEL

Based on above, the utility model aims to provide a differential mechanism for transaxle has solved that prior art exists because fluid can't be at the inside continuous lubrication motion of differential mechanism, and then causes the emergence of gear sintering, gasket wearing and tearing aggravation scheduling problem.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a differential mechanism for transaxle, includes differential side gear, semi-axis and casing, the semi-axis runs through the casing sets up, be equipped with the installation cavity on the casing, the semi-axis gear is located the installation cavity is just incited somebody to action two at least oil collecting chambers, two at least oil collecting chamber intercommunication each other are cut apart into to the installation cavity, the casing with all be equipped with first gasket between the semi-axis gear, it is just right to be equipped with on the casing the oil groove that first gasket set up, the oil groove with oil collecting chamber intercommunication, the tip cover of casing is equipped with and keeps off oily subassembly, it is configured to block to keep off oily subassembly spill of fluid in the oil collecting chamber.

As a preferred scheme of differential mechanism for transaxle, the casing includes first casing and second casing, differential mechanism for transaxle still includes the planet gear axle and locates planetary gear on the planet gear axle, the planet gear axle with planetary gear locates the inside of first casing, planetary gear with be equipped with the second gasket between the first casing, the second gasket is close to one side of planetary gear is equipped with the oil collecting pit.

As a preferred scheme of the differential mechanism for the drive axle, the first shell is further provided with a communicating hole, the planetary gear shaft is provided with a matching groove, one end of the communicating hole is communicated with the oil collecting cavity on the second shell, the other end of the communicating hole is communicated with the matching groove, and oil in the matching groove can enter the oil collecting pit.

As a preferable scheme of the differential for the drive axle, a first gasket oil groove is formed in the first gasket and is formed in one side, close to the side gear, of the first gasket; or the number of the first gasket oil grooves (41) is two, and the two first gasket oil grooves (41) are respectively arranged on two side surfaces of the first gasket (4).

As a preferable mode of the differential for the drive axle, a side gear oil groove is provided at one end of the side gear close to the first spacer.

As an optimal scheme of differential mechanism for transaxle, first gasket is close to one side of side gear first gasket oil groove includes the first gasket oil groove in left side and the first gasket oil groove in right side, the side gear oil groove includes upside side gear oil groove and downside side gear oil groove, the first gasket oil groove in left side upside side gear oil groove the first gasket oil groove in right side reaches downside side gear oil groove is head and the tail communicates in proper order.

As a preferred scheme of the differential for the drive axle, the oil collecting cavity includes a first oil collecting cavity and a second oil collecting cavity, the second housing, the axle shaft and the axle shaft gear enclose the first oil collecting cavity, the first oil collecting cavity is communicated with the oil groove, the first housing and the second housing enclose the second oil collecting cavity, a first assembling gap is arranged between the first gasket and the axle shaft gear, and the first assembling gap, the first gasket oil groove and the axle shaft gear oil groove can be communicated with the first oil collecting cavity and the second oil collecting cavity.

As a preferred scheme of differential mechanism for transaxle, the oil collecting chamber includes the third oil collecting chamber, first casing, the semi-axis, the side gear reaches sealed fender oil component encloses into the third oil collecting chamber, the last one side that is close to the second gasket of planetary gear is equipped with the planetary gear oil groove, the second gasket with be equipped with the second fit up clearance between the planetary gear, the intercommunicating pore the cooperation groove the oil collecting pit, the second fit up clearance the planetary gear oil groove first fit up clearance the first gasket oil groove reaches the side gear oil groove can communicate the second oil collecting chamber with the third oil collecting chamber.

As a preferred scheme of differential mechanism for the transaxle, be equipped with the boss on the semi-axis, keep off the oil subassembly and include the adjusting ring and be fixed in the inside oil baffle of adjusting ring, the adjusting ring cover is established on the boss.

As a preferable mode of the differential for the drive axle, the differential for the drive axle further includes a bearing, and the bearing is sleeved on the end portion of the housing and fixed by the adjusting ring.

The utility model has the advantages that: the utility model provides a differential mechanism for transaxle is under the prerequisite that does not change traditional gear formula differential mechanism structural feature, the casting oilhole on the casing has been cancelled, this design can effectively avoid throwing away a large amount of fluid at the vehicle in-process and cause the differential mechanism inner chamber to lubricate unsmoothly, it is corresponding, the oil groove of addding realizes the continuous supply of the inside fluid of differential mechanism for transaxle under abominable operating mode with the cooperation of oil collecting chamber on the casing, and then shows performance and the life-span that promotes differential mechanism for transaxle.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a cross-sectional view of a differential for a drive axle according to an embodiment of the present invention;

fig. 2 is a front view and a sectional view of a first housing of a differential for a drive axle according to an embodiment of the present invention;

fig. 3 is a front view and a sectional view of a second housing of the differential for a drive axle according to the embodiment of the present invention;

fig. 4 is a schematic view of a second spacer of a differential for a drive axle according to an embodiment of the present invention;

fig. 5 is a schematic view of a first spacer of a differential for a drive axle according to an embodiment of the present invention;

FIG. 6 is a schematic view of a side gear of a differential for a drive axle according to an embodiment of the present invention;

fig. 7 is a schematic view of a planetary gear of a differential for a drive axle according to an embodiment of the present invention.

In the figure:

1-side gear, 11-side gear oil groove, 111-upper side gear oil groove, 112-lower side gear oil groove, 2-side shaft, 21-boss, 3-shell, 30-shell oil groove, 31-first shell, 311-communication hole, 32-second shell, 33-first oil collection cavity, 34-second oil collection cavity, 35-third oil collection cavity, 4-first gasket, 41-first gasket oil groove, 411-left first gasket oil groove, 412-right first gasket oil groove, 51-planet gear shaft, 511-mating groove, 52-planet gear, 521-planet gear oil groove, 6-second gasket, 61-oil collection pit, 7-adjusting ring, 8-oil baffle, 9-bearing.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment provides a differential mechanism for transaxle, including side gear 1, semi-axis 2 and casing 3, semi-axis 2 runs through casing 3 and sets up, be equipped with the installation cavity on casing 3, at least two oil collecting chambers are just cut apart into with the installation cavity in the installation cavity are located to side gear 1, at least two oil collecting chambers communicate mutually, casing 3 all is equipped with first gasket 4 with side gear 1's both ends, be equipped with on casing 3 just to the casing oil groove 30 of first gasket 4 setting, casing oil groove 30 and oil collecting chamber intercommunication, the tip cover of casing 3 is equipped with and keeps off oily subassembly, it is configured to block spilling of the fluid of most oil collecting chambers to keep off oily subassembly.

The differential mechanism for drive axle that this embodiment provided is under the prerequisite that does not change traditional gear formula differential mechanism structural feature, the casting oilhole on the casing 3 has been cancelled, this design can effectively avoid throwing away a large amount of fluid from the differential mechanism inner chamber at the vehicle in-process and cause the smooth phenomenon of internals lubrication, it is corresponding, the continuous supply of the inside fluid of differential mechanism for drive axle under abominable operating mode is realized with the cooperation of oil collecting chamber to the casing oil groove 30 that adds on casing 3, the wearing and tearing of differential mechanism for the drive axle have been reduced, and then show performance and the life-span that promotes differential mechanism for the drive axle.

Specifically, as shown in fig. 1, the casing 3 of the present embodiment includes a first casing 31 on the right side and a second casing 32 on the left side, and the first casing 31 and the second casing 32 are each provided with a casing oil groove 30. As shown in fig. 2, three casing oil grooves 30 are provided in the first casing 31, and the three casing oil grooves 30 are distributed along the circumferential direction of the first casing 31. As shown in fig. 3, three casing oil grooves 30 are provided in the second casing 32, and the three casing oil grooves 30 are circumferentially distributed along the second casing 32. As shown in fig. 1, the differential for a drive axle of the present embodiment further includes a planet gear shaft 51 and a planet gear 52 disposed on the planet gear shaft 51, the planet gear shaft 51 and the planet gear 52 are disposed inside the first housing 31, and a second gasket 6 is disposed between the planet gear 52 and the first housing 31, as shown in fig. 4, an oil collecting pit 61 is disposed on one side of the second gasket 6 close to the planet gear 52, the number of the oil collecting pits 61 is several, the oil collecting pits 61 are distributed along the circumferential direction of the second gasket 6, and the oil in the oil collecting pit 61 can play a role of reducing the abrasion between the second gasket 6 and the planet gear 52 when the planet gear 52 rotates, so that the planet gear 52 rotates more smoothly.

As shown in fig. 1, in the first housing 31 of the present embodiment, the end close to the second housing 32 is further provided with four communication holes 311, the number of the communication holes 311 is four, the four communication holes 311 are distributed along the circumferential direction of the end surface of the first housing 31, the planet gear shaft 51 is provided with an engagement groove 511 corresponding to the communication holes 311, the engagement groove 511 is simultaneously communicated with the communication holes 311 and the oil collecting pit 61 on the second gasket 6, the communication holes 311 are also communicated with the oil collecting chamber on the second housing 32, the oil in the oil collecting chamber on the second housing 32 enters the engagement groove 511 through the communication holes 311, and the oil in the engagement groove 511 enters the oil collecting pit 61 on the second gasket 6. Of course, in other embodiments of the present invention, the number of the communication holes 311 is not limited to four in this embodiment, and may be other numbers, and the distribution of the communication holes 311 on the first housing 31 is also not limited to uniform distribution, and may not be uniform distribution, and is specifically set according to actual needs.

Further, as shown in fig. 5, a first gasket oil groove 41 is formed in the first gasket 4, the first gasket oil groove 41 is formed in one side of the first gasket 4 close to the side gear 1, and the first gasket oil groove 41 includes a left first gasket oil groove 411 located on the left side of the first gasket 4 and a right first gasket oil groove 412 located on the right side of the first gasket 4, which are symmetrical to each other. Specifically, the left first gasket oil groove 411 includes two left first gasket oil groove 411 units that are communicated with each other, and the two left first gasket oil groove 411 units are distributed non-concentrically and can pass through the fit clearance between the half shaft 2 and the first gasket 4. The first gasket oil groove 41 can lubricate not only the axle shaft 2 and the first gasket 4 but also the first gasket 4 and the side gear 1. The positions of the left first gasket oil groove 411 and the right first gasket oil groove 412 on the first gasket 4 are not limited to the arrangement of the embodiment, and may be located at other positions of the first gasket 4, and the specific structure of the first gasket oil groove 41 is not limited to the situation of the embodiment, and may be designed into other structures, specifically set according to actual needs.

As shown in fig. 6, the side gear oil groove 11 is provided at one end of the side gear 1 of the present embodiment close to the first gasket 4, the side gear oil groove 11 includes an upper side gear oil groove 111 located at the upper side of the side gear 1 and a lower side gear oil groove 112 located at the lower side of the side gear 1, which are symmetrical to each other, and both the upper side gear oil groove 111 and the lower side gear oil groove 112 are annular at a certain angle. The positions of the upper side gear oil groove 111 and the lower side gear oil groove 112 on the side gear 1 are not limited to the arrangement of the embodiment, and may be located at other positions of the side gear 1, and the specific structure of the side gear oil groove 11 is not limited to the case of the embodiment, and may be designed into other structures according to actual needs.

It should be noted that, after the first gasket 4 and the side gear 1 of the present embodiment are assembled, the left first gasket oil groove 411, the upper side half gear oil groove 111, the right first gasket oil groove 412 and the lower side half gear oil groove 112 can be sequentially communicated end to end, so that the oil in the oil collecting cavity is fully filled between the first gasket 4 and the side gear 1. Of course, in other embodiments of the present invention, the number of the first gasket oil grooves 41 on the first gasket 4 is not limited to the situation of this embodiment that is located on one side of the first gasket 4, and may also be two, and the two first gasket oil grooves 41 are respectively located on two sides of the first gasket 4, that is, located on one side of the first gasket 4 close to the side gear 1 and one side close to the housing 3 at the same time, and are specifically set according to actual requirements. The first gasket oil groove 41 and the side gear oil groove 11 are not limited to the case of this communication in the present embodiment, and may be indirectly communicated with the first gasket oil groove 41 and the side gear oil groove 11 through the fitting gap between the first gasket 4 and the side gear 1, instead of being directly communicated with each other.

As shown in fig. 1, the oil collection chamber of the present embodiment includes a first oil collection chamber 33, a second oil collection chamber 34, and a third oil collection chamber 35, the second housing 32, the half shaft 2, and the side gear 1 enclose the first oil collection chamber 33, the first oil collection chamber 33 is communicated with the housing oil groove 30, the first housing 31 and the second housing 32 enclose the second oil collection chamber 34, the first housing 31, the half shaft 2, the side gear 1, and the oil blocking component enclose the third oil collection chamber 35, and the first oil collection chamber 33, the second oil collection chamber 34, and the third oil collection chamber 35 are sequentially communicated. Specifically, a first assembly gap is provided between the first gasket 4 and the side gear 1, and the first assembly gap, the first gasket oil groove 41 and the side gear oil groove 11 can communicate the first oil collection chamber 33 and the second oil collection chamber 34. As shown in fig. 7, a planetary oil groove 521 is provided on one side of the planetary gear 52 close to the second gasket 6, both ends of the planetary oil groove 521 are communicated with a fit gap between the axle shaft 2 and the planetary gear 52, and the planetary oil groove 521 is in a circular ring shape with a certain obtuse angle, and the planetary oil groove 521 can lubricate not only the axle shaft 2 and the planetary gear 52, but also the planetary gear 52 and the second gasket 6. A second assembly gap is arranged between the second gasket 6 and the planet gear 52, and the communication hole 311, the matching groove 511, the oil collecting pit 61, the second assembly gap, the planet gear oil groove 521, the first assembly gap, the first gasket oil groove 41 and the side gear oil groove 11 can be communicated with the second oil collecting cavity 34 and the third oil collecting cavity 35.

As shown in fig. 1, the half shaft 2 of the present embodiment is provided with a boss 21, a central axis of the boss 21 coincides with a central axis of the half shaft 2, the oil blocking assembly includes an adjusting ring 7 and an oil blocking plate 8 fixed inside the adjusting ring 7, the adjusting ring 7 is fixed in the housing 3 and sleeved on the boss 21, and the oil blocking plate 8 is press-fitted inside the adjusting ring 7 to block leakage of oil in the oil collecting cavity. The differential for the drive axle of the embodiment further comprises a bearing 9, and the end of the housing 3 sleeved with the bearing 9 is fixed by the adjusting ring 7.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. The utility model provides a differential mechanism for transaxle, includes differential gear (1), semi-axis (2) and casing (3), its characterized in that, semi-axis (2) run through casing (3) set up, be equipped with the installation cavity on casing (3), semi-axis gear (1) are located in the installation cavity and will two at least oil collecting chambers, at least two are cut apart into to the installation cavity the oil collecting chamber communicates each other, casing (3) with all be equipped with first gasket (4) between semi-axis gear (1), it is just right to be equipped with on casing (3) casing oil groove (30) that first gasket (4) set up, casing oil groove (30) with oil collecting chamber intercommunication, the tip cover of casing (3) is equipped with and keeps off the oil subassembly, it is configured as blockking leak of the fluid in the oil collecting chamber.

2. The differential for the drive axle according to claim 1, wherein the housing (3) comprises a first housing (31) and a second housing (32), the differential for the drive axle further comprises a planetary gear shaft (51) and a planetary gear (52) arranged on the planetary gear shaft (51), the planetary gear shaft (51) and the planetary gear (52) are arranged inside the first housing (31), a second gasket (6) is arranged between the planetary gear (52) and the first housing (31), and an oil collecting pit (61) is arranged on one side of the second gasket (6) close to the planetary gear (52).

3. The differential gear for the drive axle according to claim 2, wherein a communication hole (311) is further provided in the first case (31), a mating groove (511) is provided in the planetary gear shaft (51), one end of the communication hole (311) communicates with the oil collection chamber in the second case (32), and the other end communicates with the mating groove (511), and oil in the mating groove (511) can enter the oil collection recess (61).

4. A differential for a drive axle according to claim 3, wherein a first spacer oil groove (41) is provided on the first spacer (4), the first spacer oil groove (41) being provided on a side of the first spacer (4) adjacent to the side gear (1); or the number of the first gasket oil grooves (41) is two, and the two first gasket oil grooves (41) are respectively arranged on two side surfaces of the first gasket (4).

5. A differential for a drive axle according to claim 4, characterized in that an end of the side gear (1) near the first spacer (4) is provided with a side gear oil groove (11).

6. The differential for the drive axle according to claim 5, characterized in that the first gasket oil groove (41) of the first gasket (4) on the side close to the side of the side gear (1) includes a left side first gasket oil groove (411) and a right side first gasket oil groove (412), the side gear oil groove (11) includes an upper side gear oil groove (111) and a lower side gear oil groove (112), and the left side first gasket oil groove (411), the upper side gear oil groove (111), the right side first gasket oil groove (412) and the lower side gear oil groove (112) are sequentially communicated end to end.

7. The differential for the drive axle according to claim 5, characterized in that the oil collecting chambers include a first oil collecting chamber (33) and a second oil collecting chamber (34), the second case (32), the axle shaft (2) and the side gear (1) enclose the first oil collecting chamber (33), the first oil collecting chamber (33) communicates with the case oil groove (30), the first case (31), the second case (32) enclose the second oil collecting chamber (34), the first gasket (4) and the side gear (1) are provided with a first fitting clearance, and the first fitting clearance, the first gasket oil groove (41) and the side gear oil groove (11) can communicate the first oil collecting chamber (33) and the second oil collecting chamber (34).

8. A differential for a drive axle according to claim 7, characterized in that the oil collection chamber comprises a third oil collection chamber (35), the first shell (31), the half shaft (2), the side gear (1) and the oil baffle component enclose a third oil collecting cavity (35), a planetary gear oil groove (521) is arranged on one side of the planetary gear (52) close to the second gasket (6), a second assembling clearance is arranged between the second gasket (6) and the planet gear (52), the communicating hole (311), the matching groove (511), the oil collecting pit (61), the second assembling gap, the planetary gear oil groove (521), the first assembling gap, the first gasket oil groove (41) and the side gear oil groove (11) can communicate the second oil collecting cavity (34) and the third oil collecting cavity (35).

9. The differential mechanism for the drive axle according to claim 1 is characterized in that a boss (21) is arranged on the half axle (2), the oil blocking assembly comprises an adjusting ring (7) and an oil blocking plate (8) fixed inside the adjusting ring (7), and the adjusting ring (7) is sleeved on the boss (21).

10. Differential for a drive axle according to claim 9, characterised in that it further comprises a bearing (9), said bearing (9) being fitted over the end of the housing (3) and being fixed by the adjustment ring (7).