A connecting structure of a differential case and a ring gear disc

Abstract

The utility model provides a kind of connection structure of differential housing and ring gear disc, it is related to differential technical field, flange plate one is generated on differential housing, flange plate two is generated on ring gear disc, the connecting surface of flange plate one has step groove, the connecting surface of flange plate two has ring groove, ring groove and step groove between are provided with annular elastic gasket, several outer lining arc segments of elastic gasket, there is one inner lining arc segment between adjacent outer lining arc segments, and the outer diameter of inner lining arc segment is less than the outer diameter of outer lining arc segment, and there is a connecting section between inner lining arc segment and outer lining arc segment, each outer lining arc segment is in the same plane, and each inner lining arc segment is in the same plane with spacing from the plane where outer lining arc segment is located.The utility model has corresponding differential transmission stability good and the like advantages.

Description

Technical Field

[0001] This utility model relates to the field of differential technology, and in particular to a connection structure between a differential housing and an annular gear disk. Background Technology

[0002] The differential housing and the ring gear are fixedly connected via their respective flange holes and flange bolts. Since the ring gear is the driven gear connecting the power output gear and is located on one side of the differential housing, it is subjected to unbalanced external forces along the axis of the power output gear. Furthermore, the high-speed transmission of the bevel gears within the housing also generates mechanical vibrations. Therefore, there is a risk of loosening of the flange bolts between the differential housing and the ring gear. Currently, the flanges of the housing and the ring gear are pre-tightened using rubber or metal gaskets. Because the ring gear and the differential housing are positioned along the flange bolt axis, when external forces along the power output gear axis act on the ring gear, the presence of a small gap between the flange bolts and the flange holes causes a slight misalignment between the ring gear and the differential housing during operation. This affects the dynamic balance after the differential housing and ring gear are connected and also creates localized stress on the flange bolts, which is detrimental to the stability of the connection and the overall stability of the differential. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention proposes a connection method that improves the reliability of the connection between the differential housing and the ring gear disk.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a connection structure between a differential housing and a ring gear disk, wherein the differential housing has a flange one and the ring gear disk has a flange two, characterized in that the connecting surface of flange one has a stepped groove, the connecting surface of flange two has an annular groove, an annular elastic gasket is provided between the annular groove and the stepped groove, the elastic gasket has several outer arc-shaped segments, and an inner arc-shaped segment with an outer diameter smaller than the outer diameter of the outer arc-shaped segments is provided between adjacent outer arc-shaped segments, a connecting segment is provided between the inner arc-shaped segments and the outer arc-shaped segments, all outer arc-shaped segments are in the same plane, and all inner arc-shaped segments are in the same plane with a distance from the plane where the outer arc-shaped segments are located.

[0005] Furthermore, a rubber gasket is provided between flange one and flange two.

[0006] When flange one and flange two are pressed together along the axial direction by bolts, the outer diameter of the elastic gasket increases and the inner diameter decreases. This has a clamping effect on the inner circumference of the ring groove and an internal support effect on the outer circumference of the ring groove and the circumference of the stepped groove. This improves the coaxiality between the ring gear disk and the differential housing. Furthermore, when the ring gear disk is subjected to external force in the direction of the output gear axis, the elastic gasket has a certain buffering capacity, effectively mitigating stress while also pre-tightening the bolts. Compared with the existing method of directly placing a gasket on the flange connection surface, the connection reliability is higher and the shock resistance is stronger. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the connection structure between the differential housing and the ring gear disk.

[0008] Figure 2 for Figure 1 Exploded view;

[0009] Figure 3 This is a schematic diagram of the structure of an elastic gasket.

[0010] Legend: 1. Flange 1; 2. Flange 2; 3. Step groove; 4. Ring groove; 5. Elastic gasket; 51. Outer arc-shaped lining section; 52. Inner arc-shaped lining section; 53. Connecting section. Detailed Implementation

[0011] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0012] like Figure 1 , Figure 2 and Figure 3 As shown, the differential housing has a flange 1, and the ring gear disc has a flange 2. The connecting surface of flange 1 has a stepped groove 3, and the connecting surface of flange 2 has an annular groove 4. An annular elastic gasket 5 is disposed between the annular groove 4 and the stepped groove 3. The elastic gasket 5 has several outer arc-shaped segments 51. Between adjacent outer arc-shaped segments 51, there is an inner arc-shaped segment 52 with an outer diameter smaller than that of the outer arc-shaped segment 51. A connecting section 53 is provided between the inner arc-shaped segment 52 and the outer arc-shaped segment 51. All outer arc-shaped segments 51 are located in the same plane, and all inner arc-shaped segments 52 are located in the same plane with a distance from the plane containing the outer arc-shaped segments 51. A rubber gasket (attached) is provided between flange 1 and flange 2. Figure 1 (Not shown).

[0013] When flange 1 and flange 2 are tightened along the axial direction by bolts, the outer diameter of the elastic gasket 5 increases and the inner diameter decreases. This has a clamping effect on the inner circumferential surface of the annular groove 4 and an internal support effect on the outer circumferential surface of the annular groove 4 and the circumferential surface of the stepped groove 3. This improves the coaxiality between the ring gear disk and the differential housing. Furthermore, when the ring gear disk is subjected to external force in the direction of the output gear axis, the elastic gasket 5 has a certain buffering capacity, effectively mitigating stress while also pre-tightening the bolts. Compared with the existing method of directly placing a gasket on the flange connection surface, the connection reliability is higher and the shock resistance is stronger.

[0014] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A connection structure between a differential housing and a ring gear disk, wherein the differential housing has a flange one (1) and the ring gear disk has a flange two (2), characterized in that, The connecting surface of flange one (1) has a stepped groove (3), and the connecting surface of flange two (2) has an annular groove (4). An annular elastic gasket (5) is provided between the annular groove (4) and the stepped groove (3). The elastic gasket (5) has several outer arc-shaped segments (51). There is an inner arc-shaped segment (52) with an outer diameter smaller than the outer diameter of the outer arc-shaped segment (51) between adjacent outer arc-shaped segments (51). There is a connecting segment (53) between the inner arc-shaped segment (52) and the outer arc-shaped segment (51). Each outer arc-shaped segment (51) is in the same plane, and each inner arc-shaped segment (52) is in the same plane with a distance from the plane where the outer arc-shaped segment (51) is located.

2. The connection structure between the differential housing and the ring gear disk according to claim 1, characterized in that, A rubber gasket is provided between flange one (1) and flange two (2).

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