阅读说明：本技术 一种限滑差速器结构 (Limited slip differential structure ) 是由 冯涛 许可 王林国 于 2019-10-29 设计创作，主要内容包括：本发明涉及一种限滑差速器结构,包括多个摩擦片、半轴齿轮垫片、隔套和两个滚针轴承组,在普通结构差速器的基础上,通过增加隔套和两个滚针轴承组结构,向两个半轴齿轮施加了轴向预紧力；通过增加摩擦片和半轴齿轮垫片结构,分别与差速器壳、半轴齿轮垫片连接,实现了半轴齿轮相对于差速器壳的摩擦降速功能。通过以上结构改进,有效限制了差速器打滑。(The invention relates to a limited slip differential structure, which comprises a plurality of friction plates, half axle gear gaskets, a spacer bush and two needle bearing sets, wherein on the basis of a differential with a common structure, axial pretightening force is applied to two half axle gears by adding the spacer bush and the two needle bearing sets; through increasing friction disc and half axle gear gasket structure, be connected with differential case, half axle gear gasket respectively, realized the friction deceleration function of half axle gear for the differential case. Through the structural improvement, the slip of the differential is effectively limited.)

1. A limited slip differential structure characterized by: the device comprises a plurality of friction plates (6), half axle gear gaskets (7), spacer bushes (9) and two needle bearing sets (10);

the friction plates (6) and the half shaft gear gaskets (7) are assembled in an overlapping mode and then are installed in a half shaft gear (8); the friction plate (6) is connected with the differential left shell (2) and the differential right shell (5) by four uniformly distributed semicircular bosses (11); the half axle gear gasket (7) is connected with the half axle gear (8) by adopting four uniformly distributed semicircular bosses (13); the concave spherical surface of the planetary gear gasket (4) is matched with the convex spherical surface of the planetary gear (3), and the round hole of the bush (1) is matched with the shaft diameter of the planetary gear (3); bevel teeth of the four planet gears 3 are meshed with bevel teeth of the half shaft gear (8), and the shaft diameter of the bush (1) is matched with four uniformly distributed semicircular holes (15) of the differential left shell (2);

the assembly relationship between the right differential shell (5) on the other side and the friction plate (6), the half axle gear gasket (7), the half axle gear (8) and the needle roller bearing set (10) is the same as that on the left side; four semicircular holes (17) of the right differential case (5) are aligned with four semicircular holes (15) of the left differential case (2) and are fixedly connected by a plurality of bolts (18);

two ends of the spacer bush (9) are connected with the two half axle gears (8) through two needle roller bearing sets (10); the spacer bush (9) is compressed and deformed to apply axial pressure to the two half shaft gears (8), and the axial pressure is applied to the friction plate (6) and the half shaft gear gasket (7); when one side wheel slips, the friction plate (6) and the side gear gasket (7) generate friction resistance under the action of axial pressure, and the high-speed rotation of the side gear (8) relative to the differential left shell (2) or the differential right shell (5) is limited.

2. A limited slip differential construction as claimed in claim 1, wherein: four semicircular bosses (11) on the shaft diameter of the friction plate (6) are matched with four semicircular grooves (12) of the differential left shell (2), and the end surface of the four semicircular bosses is attached to the plane of the differential left shell (2).

3. A limited slip differential construction as claimed in claim 1, wherein: and four semicircular bosses (13) on the round hole of the half axle gear gasket (7) are matched with four semicircular grooves (14) of the half axle gear (8), and the end surface of each semicircular boss is attached to the end surface of the friction plate (6).

4. A limited slip differential construction as claimed in claim 1, wherein: the half shaft gear (8) is connected with a half shaft through a spline hole (19).

5. A limited slip differential construction as claimed in claim 1, wherein: the spacer bush (9) adopts a ring-shaped structure, and two ends of the ring are flanged outwards to form a ring-shaped plane structure and are matched with the needle bearing set (10).

6. A limited slip differential construction as claimed in claim 1, wherein: the needle roller bearing set (10) and the spacer bush (9) are both arranged in a stepped hole (16) of the side gear (8).

7. A limited slip differential construction as claimed in claim 1, wherein: the right differential shell (5) is connected with the friction plate (6) by four uniformly distributed semicircular grooves; four evenly distributed semicircular holes (17) are matched with the lining (1).

Technical Field

The invention belongs to the technical field of automobile axles, and particularly relates to a limited slip differential structure for a drive axle assembly.

Background

The domestic light automobile generally does not adopt a differential lock structure, and when the automobile meets a pothole road surface or an ice and snow road surface, the problem that one side of the automobile often slips and cannot run is caused. The problem is that the driving axle is as follows: when the differential assembly is driven to rotate by the driving force, the side gear on one side does not rotate, and the rotating speed of the side gear on the other side is twice of that of the differential assembly.

Disclosure of Invention

The invention provides a limited slip differential structure, which is used for solving the problems that in the existing light automobile axle, because the differential mechanism adopts a common planetary gear and half axle gear matching structure, when the automobile meets pothole and icy and snowy road surfaces, the half axle gear on one side does not rotate, and the half axle gear on the other side rotates at twice of the rotation speed of the differential mechanism, so that the automobile cannot run, and the like.

The purpose of the invention is realized by adopting the following technical scheme:

a limited slip differential structure characterized by: the device comprises a plurality of friction plates 6, a half axle gear gasket 7, a spacer bush 9 and two needle roller bearing sets 10;

the friction plates 6 and the half axle gear gaskets 7 are assembled in an overlapping mode and then are arranged into two half axle gears 8; the friction plate 6 is connected with the differential left shell 2 and the differential right shell 5 by four uniformly distributed semicircular bosses 11; the half axle gear gasket 7 is connected with the half axle gear 8 by adopting four uniformly distributed semicircular bosses 13; the concave spherical surface of the planetary gear gasket 4 is matched with the convex spherical surface of the planetary gear 3, and the circular hole of the bush 1 is matched with the shaft diameter of the planetary gear 3; the bevel teeth of the four planet gears 3 are meshed with the bevel teeth of the half axle gear 8, and the shaft diameter of the bush 1 is matched with four uniformly distributed semicircular holes 15 of the differential left shell 2;

the assembling relation between the right differential case 5 on the other side and the friction plate 6, the half axle gear gasket 7, the half axle gear 8 and the needle roller bearing group 10 is the same as that on the left side; the four semicircular holes 17 of the right differential case 5 are aligned with the four semicircular holes 15 of the left differential case 2 and are fixedly connected by a plurality of bolts 18;

two ends of the spacer 9 are connected with the two half axle gears 8 through two needle bearing sets 10; the spacer 9 is compressed and deformed, and applies axial pressure to the two half shaft gears 8, and the axial pressure acts on the friction plate 6 and the half shaft gear gasket 7; when one side wheel slips, the friction plate 6 and the side gear spacer 7 generate frictional resistance under the action of axial pressure, and the side gear 8 is restricted from rotating at high speed relative to the differential left case 2 or the differential right case 5.

Furthermore, four semicircular bosses 11 on the axial diameter of the friction plate 6 are matched with four semicircular grooves 12 of the differential left shell 2, and the end surface of the semicircular bosses is attached to the plane of the differential left shell 2.

Furthermore, four semicircular bosses 13 on the circular hole of the half axle gear gasket 7 are matched with four semicircular grooves 14 of the half axle gear 8, and the end face of each semicircular boss is attached to the end face of the friction plate 6.

Further, the side gear 8 is connected to the axle shaft using a spline hole 19.

Further, the spacer 9 is of a circular structure, and two ends of the circular ring are flanged outwards to form a circular plane structure, and are matched with the needle bearing set 10.

Further, the needle bearing set 10 and the spacer 9 are both mounted in the stepped hole 16 of the side gear 8.

Furthermore, the right differential case 5 is connected with the friction plate 6 by adopting four uniformly distributed semicircular grooves; four evenly distributed semicircular holes 17 are adopted to be matched with the lining 1.

Compared with the prior art, the invention has the beneficial effects that:

according to the limited slip differential structure, on the basis of a differential with a common structure, axial pre-tightening force is applied to two half axle gears by adding a spacer bush and two needle roller bearing group structures; through increasing friction disc and half axle gear gasket structure, be connected with differential case, half axle gear gasket respectively, realized the friction deceleration function of half axle gear for the differential case. Through the structural improvement, the slip of the differential is effectively limited.

Drawings

The invention is further described with reference to the accompanying drawings in which:

FIG. 1 is a perspective view of an applied position-differential assembly of a limited slip differential configuration according to the present invention;

FIG. 2a is a side elevational view of a side gear of a limited slip differential configuration in accordance with the present invention;

FIG. 2b is a side view of the back side of a side gear of a limited slip differential configuration according to the present invention;

FIG. 3 is a friction plate view of a limited slip differential configuration according to the present invention;

FIG. 4 is a side gear spacer view of a limited slip differential configuration in accordance with the present invention;

FIG. 5a is a front view of a left differential case of a limited slip differential configuration in accordance with the present invention;

FIG. 5b is a side view of the differential left casing shaft of a limited slip differential configuration in accordance with the present invention;

FIG. 6a is a front view of a right differential case of a limited slip differential configuration in accordance with the present invention;

FIG. 6b is a side view of the right differential carrier shaft of a limited slip differential configuration in accordance with the present invention;

FIG. 7 is a spacer view of a limited slip differential configuration according to the present invention;

FIG. 8 is a planetary gear view of a limited slip differential configuration according to the present invention;

FIG. 9 is a schematic illustration of a bushing for a limited slip differential configuration according to the present invention;

FIG. 10 is a schematic view of a planetary gear spacer of a limited slip differential configuration according to the present invention;

FIG. 11 is a schematic view of a needle bearing set shim for a limited slip differential configuration according to the present invention.

Detailed Description

The invention is further elucidated with reference to the drawing.

As shown in fig. 1, four semicircular bosses 11 on the axial diameter of the friction plate 6 are matched with four semicircular grooves 12 of the left differential case 2, and the end surface of the boss is attached to the plane of the left differential case 2; four semicircular bosses 13 on the circular hole of the half axle gear gasket 7 are matched with four semicircular grooves 14 of the half axle gear 8, and the end surface of the half axle gear gasket is attached to the end surface of the friction plate 6; a plurality of friction plates 6 and half axle gear gaskets 7 are overlapped and assembled, and then are arranged in a half axle gear 8; the concave spherical surface of the planetary gear gasket 4 is matched with the convex spherical surface of the planetary gear 3, and the circular hole of the bush 1 is matched with the shaft diameter of the planetary gear 3; the bevel teeth of the four planet gears 3 are meshed with the bevel teeth of the half axle gear 8, and the shaft diameter of the bush 1 is matched with a semicircular hole 15 of the differential left shell 2; the needle roller bearing set 10 is arranged in the stepped hole 16 of the half shaft gear 8, and the spacer 9 is arranged in the stepped hole 16 of the half shaft gear 8; the assembly relationship between the right differential case 5 on the other side and the friction plate 6, the half axle gear gasket 7, the half axle gear 8 and the needle roller bearing group 10 is the same as that on the left side; the four semicircular holes 17 of the right differential case 5 are aligned with the four semicircular holes 15 of the left differential case 2 and are fixedly connected by a plurality of bolts 18.

The principle of limited slip: two ends of a spacer 9 are connected with two half axle gears 8 through two needle bearing sets 10, the spacer 9 is compressed and deformed, axial pressure is applied to the two half axle gears 8, and the axial pressure is applied to the friction plate 6 and the half axle gear gasket 7; when one side wheel slips, the friction plate 6 and the side gear gasket 7 generate friction resistance under the action of axial pressure, so that the high-speed rotation of the side gear 8 relative to the differential left shell 2 (or the differential right shell 5) is limited, and the wheel slip is prevented.

As shown in fig. 2, the side gear 8 is connected with the side gear gasket 7 by a semicircular hole-shaped groove 14; a stepped hole 16 is adopted to be matched with the needle roller bearing group 10 and the spacer bush 9; the bevel gear is adopted and meshed with the planet gear 3; and the spline hole 19 is adopted to be connected with the half shaft.

As shown in fig. 3, the friction plate 6 is connected with the differential left shell 2 and the differential right shell 5 by four evenly distributed semicircular bosses 11.

As shown in FIG. 4, the side gear spacer 7 is connected with the side gear 8 by four evenly distributed semicircular bosses 13.

As shown in fig. 5, the differential left shell 2 adopts four uniformly distributed semicircular grooves 12 which are connected with the friction plates 6; four evenly distributed semicircular holes 15 are adopted to be matched with the lining 1.

As shown in fig. 6, the right differential case 5 adopts four uniformly distributed semicircular grooves, and is connected with a friction plate 6; four evenly distributed semicircular holes 17 are adopted to be matched with the lining 1.

As shown in fig. 7, the spacer 9 is of a circular structure, and two ends of the circular ring are flanged outwards to form a circular plane structure, and are matched with the needle bearing set 10.

As shown in fig. 8, the planetary gear 3 adopts a convex spherical structure and is matched with the side gear spacer 4; a circular shaft diameter structure is adopted to be matched with the bushing 1; adopts a bevel gear structure and is meshed with the half axle gear 8.