CN210034326U

CN210034326U - Block cap reaches self sealss differential mechanism who contains this block cap

Info

Publication number: CN210034326U
Application number: CN201920802666.7U
Authority: CN
Inventors: 聂少文; 薛龙; 雷君; 王恒; 齐士举; 郭振戈
Original assignee: Dongfeng Motor Corp
Current assignee: Dongfeng Motor Corp
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-02-07
Anticipated expiration: 2029-05-30

Abstract

The utility model discloses a blanking cover and contain self sealss differential mechanism of this blanking cover, this blanking cover include the lid skeleton and wrap up in the elastic housing of lid skeleton surface, the atmospheric pressure hole has been seted up at the middle part of lid skeleton, elastic housing's inside is equipped with the elastic bulge portion that inlays and is used for alleviating atmospheric pressure in the atmospheric pressure hole. The utility model discloses a blanking cover can greatly reduced because the difficult problem of assembly that leads to because atmospheric pressure sharply increases in the assembly of differential side gear and semi-axis, can also prevent that the blanking cover from droing and getting into the gearbox.

Description

Block cap reaches self sealss differential mechanism who contains this block cap

Technical Field

The utility model belongs to the technical field of the car, specifically indicate a blanking cover and contain self sealss differential mechanism of this blanking cover.

Background

The differential mechanism of the automobile realizes differential speed through the meshing of the half shaft gear and the planetary gear. In order to be matched with the half shaft, the half shaft gear is made into a through hole, and a spline is arranged inside the through hole and matched with the half shaft spline so as to transmit torque. Because a gap exists between the half axle gear and the half axle spline, although the oil seal is used for sealing, the risk of oil leakage still exists if the oil seal fails; there is thus a self-sealing differential, i.e., a side gear cover fitted over the end of the side gear.

The existence of the half shaft gear blanking cover fundamentally stops the oil of the gearbox from flowing out from the gap between the half shaft gear and the half shaft, and simultaneously has the following problems: on one hand, because the half axle gear blocking cover is assembled at the end part of the inner side of the half axle gear, the assembly is difficult because the clearance between the splines is too small in the assembly process of the half axle, the air pressure is increased sharply; on the other hand, the situation that the automobile is vibrated and impacted in the running process can cause the blocking cover to fall off and fall into the gearbox, so that the damage to the parts in the shell is caused.

The utility model discloses an authorization notice number is CN 201025295Y's utility model discloses a split type differential mechanism structure, this kind of structure is easy to assemble and dismantles, but this kind of structure is because the tip at side gear does not have the blanking cover for the through-hole, can lead to gearbox oil to get into the spline and then have the risk of gearbox oil leak. The invention patent with application publication number CN104653746A discloses a self-sealing differential structure, but the sealing end cover of the differential structure can not reasonably utilize the internal space of a side gear, and the risk of oil leakage caused by the fact that the blocking cover is easy to fall off exists.

Disclosure of Invention

The utility model aims at overcoming the not enough among the background art, provide a blanking cover and contain this blanking cover's self sealss differential mechanism, can greatly reduced because the difficult problem of assembly that leads to because atmospheric pressure sharply increases in differential shaft gear and the semi-axis assembly, can also prevent that the blanking cover from droing and getting into the gearbox.

In order to achieve the purpose, the utility model relates to a plug cover, include lid skeleton and wrap up in the elastic housing of lid skeleton surface, the atmospheric pressure hole has been seted up at the middle part of lid skeleton, the inside of elastic housing is equipped with the elastic bulge who inlays and be used for alleviating atmospheric pressure in the atmospheric pressure hole.

In the above technical scheme, the opening shape of the air pressure hole is circular, and the shape of the elastic bulge is matched with the air pressure hole.

In the above technical solution, the elastic housing and the elastic protrusion are an integral member made of a rubber material.

The utility model also provides a self sealss differential mechanism installs foretell blanking cover on this self sealss differential mechanism.

Among the above-mentioned technical scheme, this self sealss differential mechanism includes left casing and right casing, a semi-axis mounting hole has respectively been seted up at the both ends of left casing and right casing, wear to be equipped with the side gear in the semi-axis mounting hole, the inboard end hole seal of side gear installs foretell blanking cover.

In the technical scheme, the right shell is internally provided with the planet gear shaft, and the vertical two ends of the planet gear shaft are provided with the planet gears meshed with the half axle gears.

In the technical scheme, the elastic shell of the blocking cover is in interference fit with the inner side end hole of the half axle gear.

In the above technical solution, the height dimension of the elastic outer shell of the blocking cover is greater than the distance between the outer end surface of the elastic outer shell and the planet gear shaft.

In the technical scheme, half axle gear gaskets are arranged between the half axle gear and the left shell and between the half axle gear and the right shell.

In the above technical scheme, a planetary gear gasket is arranged between the planetary gear and the right shell.

Compared with the prior art, the utility model has the advantages of as follows:

one of them, the utility model discloses a atmospheric pressure hole has been seted up at the middle part of lid skeleton, and the inside of elasticity shell is equipped with the elastic bulge portion of embedding in the atmospheric pressure hole, like this, inserts half axle gear's in-process at the semi-axis, has solved because the problem of the assembly difficulty that atmospheric pressure sharply increases and lead to.

And secondly, the utility model discloses an elastic housing and half shaft gear's inboard end hole interference fit can effectively utilize half shaft gear's hole space, and fundamentally stops the possibility that the gearbox oil passes through half shaft gear's hole inflow moreover, realizes differential mechanism self sealss, has effectively reduced the possibility of gearbox oil leak.

Thirdly, the utility model discloses a height dimension of elasticity shell is greater than the outer terminal surface of elasticity shell to the distance between the planetary gear axle, has avoided the blanking cover because external force drops the gearbox casing.

Drawings

Fig. 1 is a schematic structural view of the plug of the present invention;

FIG. 2 is a schematic cross-sectional view of the closure of FIG. 1;

FIG. 3 is a schematic structural view of the self-sealing differential mechanism of the present invention;

in the figure: 1-cover body framework, 2-elastic shell, 3-air pressure hole, 4-elastic lug boss, 5-left shell, 6-right shell, 7-half axle mounting hole, 8-half axle gear, 9-planetary gear shaft, 10-planetary gear, 11-half axle gear gasket, 12-planetary gear gasket and 13-fastening bolt.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments.

As shown in fig. 1 and 2 the utility model discloses a plug, including lid skeleton 1 and the elastic casing 2 who wraps up in lid skeleton 1 surface, atmospheric pressure hole 3 has been seted up at the middle part of lid skeleton 1, and the inside of elastic casing 2 is equipped with the elastic bulge 4 that is used for alleviating atmospheric pressure in embedding in atmospheric pressure hole 3. The cover body framework 1 is a component made of metal materials, the elastic shell 2 and the elastic bulge 4 are integrated components made of rubber materials, and the cover body framework 1 and the elastic shell 2 are formed through vulcanization. The opening shape of the air pressure hole 3 is circular, and the shape of the elastic lug boss 4 is matched with that of the air pressure hole 3. Thus, in the process of inserting the axle shaft into the side gear, the problem of difficulty in assembly due to a sharp increase in air pressure is solved.

As shown in fig. 3 the utility model discloses a self sealss differential mechanism, including left casing 5 and right casing 6, left casing 5 and right casing 6 pass through fastening bolt 13 fixed connection. A half axle mounting hole 7 has respectively been seted up at the both ends of left casing 5 and right casing 6, wears to be equipped with in the half axle mounting hole 7 and has worn to be equipped with half axle gear 8, and half axle gear 8 and half axle mounting hole 7 clearance fit, and the inboard end hole seal of half axle gear 8 installs foretell blanking cover.

In the above technical scheme, a planetary gear shaft 9 is installed in the right shell 6, and planetary gears 10 meshed with the half axle gears 8 are installed at the two vertical ends of the planetary gear shaft 9 to realize the rotation of the two half axle gears. The elastic shell 2 of the blanking cover is in interference fit with the inner side end hole of the half axle gear 8, so that the inner hole space of the half axle gear 8 can be effectively utilized, the possibility that oil in the gearbox flows in through the inner hole of the half axle gear 8 is fundamentally avoided, the self sealing of the differential is realized, and the possibility of oil leakage of the gearbox is effectively reduced.

Among the above-mentioned technical scheme, the height dimension of the elastic shell 2 of blanking cover is greater than the distance between the outer terminal surface of elastic shell 2 to planetary gear axle 9, has avoided the blanking cover to drop to the gearbox casing because of external force. And a half gear gasket 11 is arranged between the half gear 8 and the left and

right shells

5 and 6, and the half gear gasket 11 is used for adjusting the clearance between the half gear 8 and the planetary gear 10. A planetary gear spacer 12 is provided between the planetary gear 10 and the right housing 6 for adjusting a gap between the planetary gear 10 and the right housing 6.

The above description is only for the specific embodiments of the present invention, and it should be noted that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention, and the rest that are not described in detail are the prior art.

Claims

1. A closure cap, characterized by: including lid skeleton (1) and wrap up in elastic housing (2) of lid skeleton (1) surface, atmospheric pressure hole (3) have been seted up at the middle part of lid skeleton (1), the inside of elastic housing (2) is equipped with to inlay and is used for alleviating elastic bulge (4) of atmospheric pressure in atmospheric pressure hole (3).

2. The closure according to claim 1, wherein: the opening shape of the air pressure hole (3) is circular, and the shape of the elastic bulge (4) is matched with that of the air pressure hole (3).

3. The closure according to claim 1, wherein: the elastic shell (2) and the elastic lug boss (4) are integrated components made of rubber materials.

4. A self-sealing differential, comprising: the self-sealing differential is provided with the plug cover of any one of claims 1 to 3.

5. The self-sealing differential of claim 4, wherein: the self-sealing differential mechanism comprises a left shell (5) and a right shell (6), wherein two ends of the left shell (5) and the right shell (6) are respectively provided with a half shaft mounting hole (7), a half shaft gear (8) penetrates through the half shaft mounting hole (7), and the inner side end hole of the half shaft gear (8) is hermetically provided with the plug cover of any one of claims 1-3.

6. The self-sealing differential of claim 5, wherein: a planetary gear shaft (9) is installed in the right shell (6), and planetary gears (10) meshed with the half shaft gears (8) are installed at the two vertical ends of the planetary gear shaft (9).

7. The self-sealing differential of claim 5, wherein: the elastic shell (2) of the blocking cover is in interference fit with the inner side end hole of the half axle gear (8).

8. The self-sealing differential of claim 5, wherein: the height dimension of the elastic shell (2) of the blocking cover is larger than the distance between the outer end face of the elastic shell (2) and the planet gear shaft (9).

9. The self-sealing differential of claim 5, wherein: and half axle gear gaskets (11) are arranged between the half axle gear (8) and the left shell (5) and between the half axle gear and the right shell (6).

10. The self-sealing differential of claim 6, wherein: a planetary gear gasket (12) is arranged between the planetary gear (10) and the right shell (6).