CN210799795U

CN210799795U - Cold extrusion high-precision four-lane transmission shaft

Info

Publication number: CN210799795U
Application number: CN201921527869.6U
Authority: CN
Inventors: 许炜城
Original assignee: Hangzhou Aibo Automobile Spare Part Co ltd
Current assignee: Hangzhou Aibo Automobile Spare Part Co ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-06-19
Anticipated expiration: 2029-09-16

Abstract

The utility model discloses a four ball track transmission shafts of cold extrusion high accuracy, including the driving shaft, the one end of driving shaft is provided with spherical shell to be provided with the dust cover between the surface of spherical shell one side and driving shaft, one side on driving shaft surface is provided with the star cover to the inner raceway has all been seted up all around on star cover surface, the inside of inner raceway is provided with the ball, the outside of star cover just is located and is provided with the holder between the surface of ball, the utility model relates to a transmission shaft technical field. This four lane transmission shafts of cold extrusion high accuracy is provided with the star cover through one side on driving shaft surface, and the interior raceway has all been seted up around the star cover surface, and the inside of interior raceway is provided with the ball for lubricated filling operation is more convenient, need not to dismantle the dust cover, and the convection current that makes a round trip between the raceway is realized to first minute oil duct second minute oil duct simultaneously, and promotes lubricated quality greatly from inboard to the lubricated process in outside.

Description

Cold extrusion high-precision four-lane transmission shaft

Technical Field

The utility model relates to a transmission shaft technical field specifically is a cold extrusion high-precision four lane transmission shafts.

Background

The power transmission device between the engine and the driving wheel of the automobile is called the transmission system of the automobile, which should ensure that the automobile has the necessary traction force and speed under various driving conditions, and ensures the coordination change between the traction force and the vehicle speed, so that the automobile has good dynamic property and fuel economy, and also ensures the automobile can be backed, and the left and right driving wheels can meet the requirement of differential speed, and can make power transmission be smoothly combined or completely and quickly separated according to the requirements, the transmission system includes clutch, speed changer, transmission shaft, main speed reducer, differential mechanism and half shaft, etc., the transmission shaft is a rotary body with high rotation speed and less support, so its dynamic balance is critical, in the case of a front engine rear wheel drive vehicle, the transmission is arranged to transmit the rotation of the transmission to the shaft of the final drive, and the transmission can be provided with a plurality of joints, and the joints can be connected through universal joints.

Among the prior art, lubricating system in car transmission shaft rzeppa universal joint is mainly through pouring into lubricating oil into between ball shell and the dustcoat, through outside to the steel ball and the interior lubrication that realizes the steel ball of carrying of lane in, it is poor that lubricating liquid gets into the effect at its rotatory in-process, and steel ball wearing and tearing speed is fast, and lubricated filling needs to dismantle the operation to the dustcoat, and is comparatively loaded down with trivial details.

SUMMERY OF THE UTILITY MODEL

The not enough to prior art, the utility model provides a four lane transmission shafts of cold extrusion high accuracy has solved among the prior art in the car transmission shaft rzeppa universal joint lubricating system mainly through pouring into lubricating oil between toward spherical shell and the dustcoat, through the outside towards the lubrication of carrying realization steel ball in steel ball and lane, it is poor to get into the effect at its rotatory in-process lubricated liquid, the steel ball wearing and tearing speed is fast, lubricated filling needs dismantle the operation to the dustcoat, comparatively loaded down with trivial details problem.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a cold extrusion high-precision four lane transmission shafts, includes the driving shaft, the one end of driving shaft is provided with the spherical shell to be provided with the dust cover between the surface of spherical shell one side and driving shaft, one side on driving shaft surface is provided with the star cover to the inner raceway has all been seted up all around on star cover surface, the inside of inner raceway is provided with the ball, the outside of star cover just is located and is provided with the holder between the surface of ball, the inboard of spherical shell is provided with the outer raceway with ball looks adaptation, the inside one side of driving shaft is provided with the main oil duct to the top on driving shaft surface is provided with notes oil duct, it is linked together with the main oil duct to annotate the oil duct to first branch oil duct has been seted up to the inside of driving shaft, second branch oil.

Preferably, the number of the first oil distribution passages and the number of the second oil distribution passages are four, and one ends of the four first oil distribution passages are communicated with the main oil passage.

Preferably, one end of each of the four second oil distribution passages extends into the inner raceway, and the four first oil distribution passages and the four second oil distribution passages correspond to each other one to one.

Preferably, the number of the inner rolling ways, the number of the outer rolling ways and the number of the balls are four, and the four inner rolling ways, the four outer rolling ways and the four balls are distributed at equal intervals.

Preferably, the dust cover is fixedly connected with the driving shaft through a first clamping ring, and the dust cover is fixedly connected with the spherical shell through a second clamping ring.

Preferably, the driving shaft, the spherical shell, the star-shaped sleeve and the retainer are all formed by cold extrusion.

Advantageous effects

The utility model provides a four lane transmission shafts of cold extrusion high accuracy. Compared with the prior art, the method has the following beneficial effects:

(1) the cold extrusion high-precision four-ball-path transmission shaft is provided with a star-shaped sleeve through one side of the surface of a driving shaft, the periphery of the surface of the star-shaped sleeve is provided with inner rolling ways, balls are arranged in the inner rolling ways, a retainer is arranged on the outer side of the star-shaped sleeve and between the surfaces of the balls, an outer rolling way matched with the balls is arranged on the inner side of the spherical shell, a main oil duct is arranged on one side of the inner part of the driving shaft, the top of the surface of the driving shaft is provided with an oil injection passage which is communicated with the main oil passage, the driving shaft is internally provided with a first oil distribution passage, the star-shaped sleeve is internally provided with a second oil distribution passage, so that the lubricating and injecting operation is more convenient without disassembling the dust cover, meanwhile, the first oil distribution passage and the second oil distribution passage realize back-and-forth convection of lubricating oil among the roller paths, and the lubricating quality is greatly improved in the lubricating process from the inner side to the outer side.

(2) The cold-extrusion high-precision four-ball-path transmission shaft is provided with four first oil distribution ducts and four second oil distribution ducts, one ends of the four first oil distribution ducts are communicated with the main oil duct, one ends of the four second oil distribution ducts extend into the inner ball path, the four first oil distribution ducts and the four second oil distribution ducts are in one-to-one correspondence, the inner ball path, the outer ball path and the four balls are arranged, the four inner ball path, the four outer ball path and the four balls are distributed at equal intervals, the dust cover and the driving shaft are fixedly connected through a first clamping ring, the dust cover and the ball shell are fixedly connected through a second clamping ring, the driving shaft, the ball shell, the star-shaped sleeve and the retainer are all formed by cold extrusion, the casting or forging forming process is adopted by improving the traditional transmission shaft structure, the ball path finishing mode is improved from turning and milling combined machining to cold extrusion forming, raw material, the ball path is free of cutting.

Drawings

FIG. 1 is a partial cross-sectional view of the structure of the present invention;

FIG. 2 is a schematic view of the main oil gallery structure of the present invention;

fig. 3 is a side view of the inner structure of the inner star-shaped sleeve of the present invention.

In the figure: the oil injection device comprises a driving shaft 1, a spherical shell 2, a dustproof cover 3, a star-shaped sleeve 4, an inner rolling path 5, balls 6, a retainer 7, an outer rolling path 8, a main oil path 9, an oil injection path 10, a first oil branch path 11, a second oil branch path 12, a first snap ring 13 and a second snap ring 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a cold extrusion high-precision four-lane transmission shaft comprises a driving shaft 1, wherein one end of the driving shaft 1 is provided with a spherical shell 2, a dustproof cover 3 is arranged between one side of the spherical shell 2 and the surface of the driving shaft 1, the dustproof cover 3 is fixedly connected with the driving shaft 1 through a first clamping ring 13, the dustproof cover 3 is fixedly connected with the spherical shell 2 through a second clamping ring 14, one side of the surface of the driving shaft 1 is provided with a star-shaped sleeve 4, the periphery of the surface of the star-shaped sleeve 4 is provided with inner races 5, balls 6 are arranged inside the inner races 5, a retainer 7 is arranged outside the star-shaped sleeve 4 and between the surfaces of the balls 6, the driving shaft 1, the spherical shell 2, the star-shaped sleeve 4 and the retainer 7 are all formed by cold extrusion, the consumption of raw materials for the cold extrusion is low, the process is simple, the lanes are free of cutting, the inner side of the, four inner raceways 5, four outer raceways 8 and four balls 6 are arranged, the four inner raceways 5, the four outer raceways 8 and the four balls 6 are distributed at equal intervals, a main oil gallery 9 is arranged at one side inside the driving shaft 1, an oil injection gallery 10 is arranged at the top of the surface of the driving shaft 1, the oil passages are drilled on a formed part, the machining operation is simple, oil plugs are arranged at the right end of the main oil gallery 9 and at the top end of the oil injection gallery 10, the oil injection gallery 10 is communicated with the main oil gallery 9, a first branch oil gallery 11 is arranged inside the driving shaft 1, a second branch oil gallery 12 is arranged inside the star-shaped sleeve 4, the four first branch oil galleries 11 and the four second branch oil galleries 12 are arranged, one ends of the four first branch oil galleries 11 are communicated with the main oil gallery 9, one ends of the four second branch oil galleries 12 extend into the inner raceways 5, and, the dust cover 3 does not need to be disassembled in the lubricating and filling operation, meanwhile, the first oil distributing passage 11 and the second oil distributing passage 12 realize back-and-forth convection of lubricating oil among the roller paths, and the lubricating process from the inner side to the outer side is realized, so that the lubricating quality is greatly improved, and the content which is not described in detail in the specification belongs to the prior art which is well known by a person skilled in the art.

When the dustproof cover is used, lubricating grease is filled through the oil filling duct 10, enters the first oil dividing duct 11 through the main oil duct 9, then enters the second oil dividing duct 12 in the star-shaped sleeve 4, and finally flows into the space between the inner rolling way 5 and the rolling balls 6 to realize lubrication, in the rotating process, the lubricating grease in the first oil dividing duct 11 and the second oil dividing duct 12 can realize back-and-forth convection, and the dust cover 3 does not need to be detached and reassembled in the filling and lubricating process.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a four ball way transmission shafts of cold extrusion high accuracy, includes driving shaft (1), the one end of driving shaft (1) is provided with spherical shell (2) to be provided with dust cover (3), its characterized in that between the surface of spherical shell (2) one side and driving shaft (1): one side on driving shaft (1) surface is provided with star cover (4) to interior raceway (5) have all been seted up around star cover (4) surface, the inside of interior raceway (5) is provided with ball (6), the outside of star cover (4) just is located and is provided with between the surface of ball (6) holder (7), the inboard of spherical shell (2) is provided with outer raceway (8) with ball (6) looks adaptation, the inside one side of driving shaft (1) is provided with main oil duct (9), and the top on driving shaft (1) surface is provided with notes oil duct (10), it is linked together with main oil duct (9) to annotate oil duct (10), and first branch oil duct (11) have been seted up to the inside of driving shaft (1), second branch oil duct (12) have been seted up to the inside of star cover (4).

2. The cold-extruded high-precision four-lane transmission shaft according to claim 1, wherein: the first oil distribution passage (11) and the second oil distribution passage (12) are four in number, and one ends of the four first oil distribution passages (11) are communicated with the main oil passage (9).

3. The cold-extruded high-precision four-lane transmission shaft according to claim 2, wherein: one ends of the four second oil distribution passages (12) extend into the inner roller path (5), and the four first oil distribution passages (11) correspond to the four second oil distribution passages (12) one by one.

4. The cold-extruded high-precision four-lane transmission shaft according to claim 1, wherein: the inner rolling ways (5), the outer rolling ways (8) and the balls (6) are all provided with four, and the four inner rolling ways (5), the four outer rolling ways (8) and the four balls (6) are distributed at equal intervals.

5. The cold-extruded high-precision four-lane transmission shaft according to claim 1, wherein: the dustproof cover (3) is fixedly connected with the driving shaft (1) through a first clamping ring (13), and the dustproof cover (3) is fixedly connected with the spherical shell (2) through a second clamping ring (14).

6. The cold-extruded high-precision four-lane transmission shaft according to claim 1, wherein: the driving shaft (1), the spherical shell (2), the star-shaped sleeve (4) and the retainer (7) are all formed by cold extrusion.