阅读说明：本技术 用于变速器的输出轴支撑装置 (Output shaft support device for transmission ) 是由 李三帅 刘赛赛 伊宝民 薛忠余 于 2020-09-03 设计创作，主要内容包括：本发明涉及用于变速器的输出轴支撑装置,包括第一轴承组件和第二轴承组件；第一轴承组件包括内圈,内圈设有轴孔,用于连接输出轴；内圈朝向变速箱壳体的端面上设有凹槽；第二轴承组件包括轴圈和调整垫片；轴圈位于凹槽内,调整垫片位于轴圈与变速箱壳体之间；凹槽的底壁、轴圈和调整垫片共同形成止推轴承。装配时,第二轴承组件的轴圈位于第一轴承组件的内圈的凹槽内,凹槽的底壁形成止推轴承的止推垫片,第一轴承组件和第二轴承组件在输出轴的轴向上的安装空间减小,实现了以一个轴承的安装空间,装配两个轴承组合的效果,解决了安装空间不足的问题,结构紧凑。(The invention relates to an output shaft support device for a transmission, which comprises a first bearing assembly and a second bearing assembly; the first bearing assembly comprises an inner ring, and the inner ring is provided with a shaft hole and is used for connecting the output shaft; a groove is formed in the end face, facing the gearbox shell, of the inner ring; the second bearing assembly comprises a shaft ring and an adjusting shim; the shaft ring is positioned in the groove, and the adjusting gasket is positioned between the shaft ring and the gearbox shell; the bottom wall of the groove, the shaft ring and the adjusting gasket together form a thrust bearing. During assembly, the shaft ring of the second bearing assembly is positioned in the groove of the inner ring of the first bearing assembly, the bottom wall of the groove forms a thrust washer of the thrust bearing, the mounting space of the first bearing assembly and the second bearing assembly in the axial direction of the output shaft is reduced, the effect of assembling two bearings by using the mounting space of one bearing is realized, the problem of insufficient mounting space is solved, and the structure is compact.)

1. An output shaft support device for a transmission, characterized in that: comprises a first bearing assembly (1) and a second bearing assembly (2);

the first bearing assembly (1) comprises an inner ring (12), and the inner ring (12) is provided with a shaft hole (123) for connecting the output shaft (3); a groove (121) is arranged on the end surface of the inner ring (12) facing the gearbox shell (4);

the second bearing assembly (2) comprises a shaft ring (21) and an adjusting gasket (22); the shaft ring (21) is positioned in the groove (121), and the adjusting gasket (22) is positioned between the shaft ring (21) and the gearbox shell (4); the bottom wall of the groove (121), the shaft ring (21) and the adjusting gasket (22) jointly form a thrust bearing.

2. The output shaft support device for a transmission according to claim 1, wherein: the first bearing assembly (1) further comprises an outer ring (11), rollers (13) and a cage (14);

the rollers (13) and the cage (14) are located between the inner ring (12) and the outer ring (11);

the outer side wall of the inner ring (12) is provided with a first rib (124), and the first rib (124) and the groove (121) are respectively positioned at two opposite ends of the inner ring (12);

one end of the outer ring (11) is provided with a second flange (111), and the second flange (111) is positioned on the inner side wall of the outer ring (11); the other end of the outer ring (11) is provided with an opening.

3. The output shaft support device for a transmission according to claim 2, wherein: the opening of the outer ring (11) is provided with a guide surface (112).

4. The output shaft support device for a transmission according to claim 2, wherein: the roller (13) is a cylindrical roller.

5. The output shaft support device for a transmission according to claim 1, wherein: the groove (121) is communicated with the shaft hole (123).

6. The output shaft support device for a transmission according to claim 1, wherein: the groove (121) is cylindrical and is arranged coaxially with the shaft hole (123).

7. The output shaft support device for a transmission according to claim 1, wherein: the open end of the groove (121) is provided with a guide part (122).

8. The output shaft support device for a transmission according to claim 7, wherein: the guide part (122) is trumpet-shaped.

Technical Field

The invention relates to the technical field of automatic transmissions, in particular to an output shaft supporting device for a transmission.

Background

An automatic transmission is a set of transmission devices for coordinating the rotational speed of an engine and the actual running speed of wheels, and is used for exerting the best performance of the engine. The transmission can generate different gear ratios between an engine and wheels during the running process of the automobile, and the transmission of rotating speeds of different gears is realized.

One end of an output shaft of the automatic transmission is connected with the planet carrier, and the other end of the output shaft is arranged on a shell of the transmission through a supporting device. The support device comprises a bearing for receiving radial forces and a thrust bearing for receiving axial forces. So, the shaft shoulder department of the output gear of gearbox output shaft needs sufficient space assembly strutting arrangement, for making compact structure in the gearbox assembly assembling process, the not enough condition in space easily appears.

Disclosure of Invention

The technical problem to be solved by the invention is to provide an output shaft supporting device for a transmission, which can overcome the defects in the prior art, and has the advantages of small required installation space, compact structure and reasonable structure.

In order to solve the technical problems, the technical scheme of the invention is as follows: an output shaft support apparatus for a transmission including a first bearing assembly and a second bearing assembly;

the first bearing assembly comprises an inner ring, and the inner ring is provided with a shaft hole and is used for connecting the output shaft; a groove is formed in the end face, facing the gearbox shell, of the inner ring;

the second bearing assembly comprises a shaft ring and an adjusting shim; the shaft ring is positioned in the groove, and the adjusting gasket is positioned between the shaft ring and the gearbox shell; the bottom wall of the groove, the shaft ring and the adjusting gasket together form a thrust bearing.

As a preferred solution, the first bearing assembly further comprises an outer race, rollers and a cage;

the roller and the retainer are positioned between the inner ring and the outer ring;

the outer side wall of the inner ring is provided with a first flange, and the first flange and the groove are respectively positioned at two opposite ends of the inner ring;

one end of the outer ring is provided with a second flange which is positioned on the inner side wall of the outer ring; the other end of the outer ring is provided with an opening.

As the preferred technical scheme, the opening of the outer ring is provided with a guide surface.

Preferably, the rollers are cylindrical rollers.

As a preferred technical scheme, the groove is communicated with the shaft hole.

As the preferred technical scheme, the groove is cylindrical and is coaxially arranged with the shaft hole.

Preferably, the opening end of the groove is provided with a guide part.

Preferably, the guide part is in the shape of a horn.

Due to the adoption of the technical scheme, the output shaft supporting device has the following advantages:

1) the first bearing assembly is separated, so that the gearbox shell and the output shaft can be conveniently assembled;

2) the first retaining edge is arranged at one end of the inner ring, the second retaining edge is arranged at one end of the outer ring, and the first retaining edge and the second retaining edge are respectively positioned at two opposite sides of the roller, so that the roller can be limited, and the assembly process is simplified; the assembly of the roller, the retainer and the inner ring is convenient, and the assembly operation of the inner ring together with the roller and the retainer and the assembly operation of the outer ring are simpler;

3) the end face of one end, facing the gearbox shell, of the inner ring is provided with a groove, and the shaft ring of the second bearing assembly is arranged in the groove, so that the mounting space of the first bearing assembly and the second bearing assembly in the axial direction of the output shaft is reduced, the effect of assembling two bearing combinations by using the mounting space of one bearing is realized, and the problem of insufficient mounting space is solved;

4) the output shaft supporting device is reasonable in overall structure and compact in structure, and the problem of insufficient installation space is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art 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 these drawings without creative efforts.

FIG. 1 is a schematic view of an assembled structure of an output shaft and a transmission housing;

FIG. 2 is a schematic structural view of the output shaft support;

fig. 3 is a schematic structural view of the first bearing assembly.

In the figure, the position of the upper end of the main shaft,

1-first bearing assembly, 11-outer race, 111-second rib, 112-guide surface, 12-inner race, 121-groove, 122-guide, 123-shaft hole, 124-first rib, 13-roller, 14-cage;

2-thrust bearing, 21-shaft ring, 22-adjusting shim;

3-output shaft, 31-shaft shoulder, 32-output gear;

4-gearbox shell, 41-big gear.

Detailed Description

As shown in fig. 1, 2 and 3, the output shaft supporting apparatus for a transmission includes a first bearing assembly 1 and a second bearing assembly 2, wherein the first bearing assembly 1 is for receiving a radial force and the second bearing assembly 2 is for receiving an axial force.

The first bearing assembly 1 comprises an inner race 12, an outer race 11, rollers 13 and a cage 14; the rollers 13 and the cage 14 are located between the inner ring 12 and the outer ring 11.

The inner ring 12 has a shaft hole 123 connected to the output shaft 3; when in use, the inner ring 12 is fixedly connected with the shaft shoulder 31 of the output shaft 3 through the shaft hole 123. The end surface of the inner ring 12 facing the gearbox shell 4 is provided with a groove 121, and the groove 121 can be communicated with the shaft hole 123 or not; preferably, as shown in fig. 2, the groove 121 communicates with the shaft hole 123, which facilitates machining and provides a sufficient installation space for the output shaft. The inner contour of the groove 121 may be set as desired, and most preferably, the groove 121 is cylindrical and is disposed coaxially with the shaft hole 123.

A first rib 124 is arranged on the outer side wall of the inner ring 12, and the first rib 124 and the groove 121 are respectively positioned at two opposite ends of the inner ring 12; the first rib 124 protrudes outward of the inner race 12.

One end of the outer ring 11 is provided with a second retaining edge 111, and the second retaining edge 111 is located on the inner side wall of the outer ring 11. The first rib 124 and the second rib 111 are respectively located at two ends of the roller 13, and cooperate with each other to limit the roller 13. The other end of the outer ring 11 is provided with an opening which is provided with a guide surface 112, so that the bearing is convenient to assemble.

Be provided with on the gearbox housing 4 with 11 assorted first mounting holes in outer lane, outer lane 11 adopts interference fit with first mounting hole, and second flange 111 supports with the hole bottom wall of first mounting hole mutually and leans on.

The roller 13 is preferably a cylindrical roller, the two ends of which abut against the first rib 124 and the second rib 111, respectively.

The second bearing assembly 2 includes a collar 21 and a spacer 22, the collar 21 being located within the recess 121 and the spacer 22 being located between the collar 21 and the gearbox housing 4. The fitting of the collar 21 to the groove 121 includes, but is not limited to, the following: the shaft ring 21 can be partially positioned in the groove 121, that is, when the axial dimension of the shaft ring 21 is greater than the depth of the groove 121, the shaft ring 21 partially extends out of the groove 121, and the adjusting gasket 22 is positioned outside the groove 121; the collar 21 may also be located entirely within the groove 121, that is, when the axial dimension of the collar 21 is smaller than the depth of the groove 121, the collar 21 is located entirely within the groove 121, and the adjusting washer 22 partially extends into the groove 121.

When the groove 121 communicates with the shaft hole 123, the inner diameter of the groove 121 needs to be larger than the diameter of the shaft hole 123 for smooth assembly of the collar 21, especially when the shaft hole 123 is coaxially disposed with the groove 121. The gearbox housing 4 is provided with a second mounting hole matched with the adjusting gasket 22, and the adjusting gasket 22 and the second mounting hole are fixedly connected in an interference fit mode. During assembly, the adjusting shim 22 is first press-fitted into the second mounting hole by a press.

In order to facilitate the assembly of the second bearing assembly 2 into the groove 121 of the inner race 12, a flared guide portion 122 is provided at the outer end of the groove 121, and the guide portion 122 guides the assembly of the collar 21 and/or the spacer 22 to prevent the second bearing assembly 2 from scratching the inner race 12 during assembly.

As shown in fig. 1 and 2, the thrust bearing and the cylindrical roller bearing are integrated into a whole by the output support device, the thrust bearing and the cylindrical roller bearing share the inner ring 12, and the inner ring 12, the shaft ring 21 and the adjusting shim 22 jointly form the thrust bearing. The inner ring 12 not only plays a role of connecting the output shaft 3, but also plays a role of a thrust washer of the second bearing assembly 2, so that the whole structure of the supporting device is compact; at the same time, the second bearing assembly 2 is located partially or mostly inside the first bearing assembly 1, so that the first bearing assembly 1 and the second bearing assembly 2 are reduced in size in the axial direction of the output shaft 3, reducing the installation space required for the support device as a whole.

The first bearing assembly 1 adopts a split design, so that the assembly of the output shaft 3 and the gearbox shell 4 is convenient, and the assembly process of the output shaft is simplified.

As shown in fig. 1, the transmission case 4 is provided with a large gear 41 engaged with the output gear 32, and when the outer diameter of the roller 13 and cage 14 combination is larger than the dedendum circle of the output gear 32, the large gear 41 engaged with the output gear 32 cannot be assembled in a normal assembly manner; the output shaft supporting device adopting the structure can well overcome the problem of insufficient installation space, and the assembly of the output shaft 3 and the gearbox shell 4 is realized.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.