CN211574209U

CN211574209U - Structure for sealing and centering transmission shaft

Info

Publication number: CN211574209U
Application number: CN201922017920.5U
Authority: CN
Inventors: 倪观军
Original assignee: Wanxiang Group Corp; Wanxiang Qianchao Transmission Shaft Co Ltd
Current assignee: Wanxiang Group Corp; Wanxiang Qianchao Transmission Shaft Co Ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-09-25
Anticipated expiration: 2029-11-20

Abstract

The utility model discloses a play sealed and centering dual function's structure on transmission shaft, it is main including slip triangle fork, the dabber, the bolt, the nut, elastic coupling, the position sleeve, the triangle fork, the gearbox output shaft, slip triangle fork spline portion and the cooperation of gearbox output shaft, press into the dabber main aspects to slip triangle fork bottom step department and realize sealing, thereby prevent that the oil in the gearbox from oozing out, the dabber tip carries out the inseparable cooperation with the position sleeve hole simultaneously and plays the centering effect, slip triangle fork, elastic coupling, the triangle fork couples together through bolt and nut. The utility model designs the blocking cover with sealing function and the positioning pin with centering function into a whole, reduces 2 processes, namely, blocking cover pressing and whole circle riveting, cancels a blocking cover part, has simpler assembly process and more reliable quality; when the mandrel is pressed in, the mandrel is directly pressed to the backer at the bottom of the sliding triangular fork, the quality is reliable, and the sealing and centering performance which is not lower than that of the original structure can be achieved.

Description

Structure for sealing and centering transmission shaft

Technical Field

The utility model relates to a field of transmission shaft, concretely relates to play structure sealed and centering dual-purpose on transmission shaft.

Background

The transmission shaft is the key part among the automobile transmission system, especially SUV and car transmission shaft have higher requirement to NVH, generally can adopt the elastic coupling structure to carry out the damping, it is limited because of other parts of whole car, can take slip triangle fork spline portion and gearbox output shaft cooperation usually, press into whole circle riveting behind the slip triangle fork through sealed blanking cover, play sealed effect, prevent that the oil in the gearbox from oozing, the locating pin is pressed into and is closely cooperated with the locating sleeve inner bore behind the slip triangle fork simultaneously, play centering effect, reuse bolt, nut slip triangle fork, elastic coupling, triangle fork are connected. This technical structure has the following drawbacks: the process is complex, the plug cover is firstly pressed into the sliding triangular fork and is riveted in a whole circle, then the positioning pin is pressed into another station in an interference manner, and the sealing plug cover is easy to be broken by jacking without limit when the positioning pin is pressed into the other station.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art existence, and provide a structure of playing sealed and centering dual-purpose on the transmission shaft.

The purpose of the utility model is accomplished through following technical scheme: the structure with the double functions of sealing and centering on the transmission shaft mainly comprises a sliding triangular fork, a mandrel, a bolt, a nut, an elastic coupling, a positioning sleeve, a triangular fork and a gearbox output shaft, wherein the spline part of the sliding triangular fork is matched with the gearbox output shaft, the large end of the mandrel is pressed into the step at the bottom of the sliding triangular fork to realize sealing, so that oil in the gearbox is prevented from seeping out, meanwhile, the small end of the mandrel is tightly matched with the inner hole of the positioning sleeve to play a centering role, the positioning sleeve is installed on the triangular fork, the sliding triangular fork, the elastic coupling and the triangular fork are connected through the bolt and the nut.

The big end of the mandrel is in interference fit with the step at the bottom of the triangular fork.

The utility model has the advantages that: the utility model designs the blocking cover with sealing function and the positioning pin with centering function into a whole, reduces 2 processes, namely, blocking cover pressing and whole circle riveting, cancels a blocking cover part, has simpler assembly process and more reliable quality; when the mandrel is pressed in, the mandrel is directly pressed to the backer at the bottom of the sliding triangular fork, the quality is reliable, and the sealing and centering performance which is not lower than that of the original structure can be achieved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Description of reference numerals: the device comprises a sliding triangular fork 1, a mandrel 2, a bolt 3, a nut 4, an elastic coupling 5, a positioning sleeve 6, a triangular fork 7 and a gearbox output shaft 8.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

example (b): as shown in the attached drawing, this kind of structure of playing sealed and centering dual-purpose on transmission shaft, mainly including slip triangle fork 1, dabber 2, bolt 3, nut 4, elastic coupling 5, position sleeve 6, triangle fork 7, gearbox output shaft 8, slip triangle fork 1 spline part and the cooperation of gearbox output shaft 8, press into dabber 2 main aspects to 1 bottom step department of slip triangle fork and realize sealedly, thereby prevent the interior oil seepage of gearbox, 2 tip of dabber and 6 holes of position sleeve carry out the close fit and play the centering effect simultaneously, position sleeve 6 is installed on triangle fork 7, slip triangle fork 1, elastic coupling 5, triangle fork 7 couples together through bolt 3 and nut 4. The big end of the mandrel 2 is in interference fit with the step at the bottom of the triangular fork 1.

It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.

Claims

1. The utility model provides a play structure sealed and centering dual-purpose on transmission shaft which characterized in that: mainly including slip triangle fork (1), dabber (2), bolt (3), nut (4), elastic coupling (5), position sleeve (6), triangle fork (7), gearbox output shaft (8), slip triangle fork (1) spline portion cooperates with gearbox output shaft (8), press into dabber (2) big end to slip triangle fork (1) bottom step department and realize sealedly, thereby prevent that the oil in the gearbox from oozing, dabber (2) tip closely cooperates with position sleeve (6) hole simultaneously and plays the centering effect, install on triangle fork (7) position sleeve (6), slip triangle fork (1), elastic coupling (5), triangle fork (7) are connected through bolt (3) and nut (4).

2. The dual sealing and centering structure on a drive shaft of claim 1, wherein: the big end of the mandrel (2) is in interference fit with the step at the bottom of the triangular fork (1).