CN207106171U

CN207106171U - A kind of contactless intermediate supports dustproof and waterproof structure of automobile middle transmission shaft

Info

Publication number: CN207106171U
Application number: CN201720950918.1U
Authority: CN
Inventors: 孙光仙; 陈正江; 姜超; 左印波
Original assignee: Anhui Jianghuai Automobile Group Corp
Current assignee: Anhui Jianghuai Automobile Group Corp
Priority date: 2017-08-01
Filing date: 2017-08-01
Publication date: 2018-03-16
Anticipated expiration: 2027-08-01

Abstract

A kind of contactless intermediate supports dustproof and waterproof structure of automobile middle transmission shaft, it includes：The intermediate propeller shaft central siphon assembly and universal-joint fork connected through intermediate supports bearing, also have on intermediate supports bearing：Around the intermediate supports bushing of arrangement, preceding dust ring and rear dust ring positioned at both ends, preceding dust ring and rear dust ring rotate with intermediate propeller shaft central siphon assembly；Intermediate supports bushing has：Positioned at its excircle and equally distributed through hole and the spill annular groove positioned at middle part front and back end, the outer of preceding dust ring and rear dust ring is arranged in spill annular groove, and preceding dust ring and rear dust ring are respectively through spill annular groove and through hole gas connection, the problems such as avoiding abrasion and aging and dustproof and waterproof from failing, it is simple in construction, reduce the manufacturing cost of product.

Description

A kind of contactless intermediate supports dustproof and waterproof structure of automobile middle transmission shaft

Technical field

The utility model is on a kind of contactless intermediate supports dustproof and waterproof structure of automobile middle transmission shaft.

Background technology

The intermediate propeller shaft intermediate supports of automobile are installed by intermediate supports bushing and bearing at present, in order to prevent ash The foreign matter such as dirt or rainwater enters Bearing inner, causes bearing earlier period damage, and in intermediate supports bearing front and back end, installation sealing ring enters Row dustproof and waterproof, good dustproof and waterproof effect can be just played because sealing ring will combine closely with intermediate propeller shaft, is easily made close Seal abrasion, reduces dust-proof effect, until failure, reduces service life, the necked part precision contacted in addition with sealing ring It is required that it is higher, cause cost higher plus sealing ring etc..

Utility model content

The purpose of this utility model is that solve the abrasion and aging of the forward and backward sealing ring of automobile middle transmission shaft intermediate supports, The problems such as causing intermediate supports bearing dustproof and waterproof to fail, the service life of intermediate propeller shaft intermediate supports bearing is improved, simultaneously Reduce the manufacturing cost of product.

To realize above-mentioned technical purpose, the utility model, which provides a kind of contactless intermediate supports of automobile middle transmission shaft, to be prevented Dirt waterproof construction, it includes：The intermediate propeller shaft central siphon assembly and universal-joint fork connected through intermediate supports bearing, wherein：It is described Also have on intermediate supports bearing：Around the intermediate supports bushing of arrangement, preceding dust ring and rear dust ring positioned at both ends are described Preceding dust ring and the rear dust ring rotate with the intermediate propeller shaft central siphon assembly；The intermediate supports bushing has：It is located at Its excircle and equally distributed through hole and the spill annular groove positioned at middle part front and back end, the preceding dust ring and the rear dust ring Outer be arranged in the spill annular groove, and the preceding dust ring and it is described after dust ring respectively through the spill annular groove with The through hole gas connection.

As a further improvement, the intermediate supports bushing also has trapezoidal oblique on the front/rear end of middle part Tooth, the helical teeth is respectively positioned at the inner side of the preceding dust ring and the rear dust ring.

As a further improvement, the helical teeth outwards rolls along clockwise direction in the front end of the intermediate supports bushing Tiltedly, the helical teeth tilts laterally in the counterclockwise direction in the rear end of the intermediate supports bushing.

As a further improvement, the outside of the intermediate supports bushing is fixedly connected with fixed support.

As a further improvement, the diameter of the rear and front end part of the through hole is more than the diameter of mid portion.

The utility model provides a kind of contactless intermediate propeller shaft intermediate supports dustproof and waterproof mounting structure, avoids Automobile middle transmission shaft intermediate supports are due to the abrasion and aging of forward and backward sealing ring, the problems such as causing dustproof and waterproof to fail, improve The service life of intermediate propeller shaft intermediate supports bearing, simultaneously because it is simple in construction, reduce the manufacturing cost of product.

Brief description of the drawings

Fig. 1 is the utility model assembling schematic diagram；

Fig. 2 is partial schematic diagram at intermediate supports bushing；

Fig. 3 is intermediate supports bush end face schematic diagram；With

Fig. 4 is intermediate supports bushing sectional view.

Reference：Intermediate propeller shaft central siphon assembly 1；Preceding dust ring 2；Fixed support 3；Intermediate supports bushing 4；Centre branch Support bearing 5；Dust ring 6 afterwards；Universal-joint fork 7；Through hole 8；Spill annular groove 9；Helical teeth 10；Automobile direction of advance A, airflow direction B, after Dust ring direction of rotation C.

Embodiment

As shown in Figures 1 to 4, the utility model provides a kind of contactless intermediate supports dustproof and waterproof of automobile middle transmission shaft Structure, it includes：The intermediate propeller shaft central siphon assembly 1 and universal-joint fork 7 connected through intermediate supports bearing 5, wherein：The centre Also have on spring bearing 5：Around the intermediate supports bushing 4 of arrangement, preceding dust ring 2 and rear dust ring 6 positioned at both ends are described Preceding dust ring 2 and the rear dust ring 6 rotate with the intermediate propeller shaft central siphon assembly 1；The intermediate supports bushing 4 has： Positioned at its excircle and equally distributed through hole 8 and the spill annular groove 9 positioned at middle part front and back end, the preceding dust ring 2 and described The outer of dust ring 6 is arranged in the spill annular groove 9 afterwards, and the preceding dust ring 2 and the rear dust ring 6 are respectively through institute State spill annular groove 9 and the gas connection of through hole 8.

As a further improvement, the intermediate supports bushing 4 also has trapezoidal oblique on the front/rear end of middle part Tooth 10, the helical teeth 10 is respectively positioned at the inner side of the preceding dust ring 2 and the rear dust ring 6.

As a further improvement, the helical teeth 10 is outside along clockwise direction in the front end of the intermediate supports bushing 4 Roll tiltedly, the helical teeth 10 tilts laterally in the counterclockwise direction in the rear end of the intermediate supports bushing 4.

As a further improvement, the outside of the intermediate supports bushing 4 is fixedly connected with fixed support 3.

As a further improvement, the diameter of the rear and front end part of the through hole 8 is more than the diameter of mid portion.

The dust-proof mounting structure of the contactless intermediate supports of the automobile middle transmission shaft is by preceding dust ring 2；Intermediate supports Bushing 4；Dust ring 6 forms afterwards.As shown in Figures 2 to 4, wherein automobile direction of advance is arrow A, and airflow direction is arrow B, after Dust ring direction of rotation is arrow C.

First, increased spill annular groove 9 is distinguished in the middle part front and back end of intermediate supports bushing 4, with preceding dust ring 2, rear dust ring 6 Outer ring forms labyrinth type dustproof and waterproof structure together, automobile stagnation of movement or when running at a low speed, and the foreign matter such as extraneous dust rainwater is fallen into Discharged from below after in spill annular groove, prevent the foreign matters such as dust and the rainwater in the external world from entering Bearing inner, realize automobile stagnation of movement or Intermediate supports bearing non-contact formula dustproof and waterproof when running at a low speed, in the absence of abrasion and the problems such as aging.

The other increased many trapezoidal helical teeth 10 of middle part front/rear end of intermediate supports bushing 4, make the edge of helical teeth 10 of front end Tilt laterally clockwise, the helical teeth 10 of rear end is tilted laterally in the counterclockwise direction, due to these trapezoidal helical teeth It is smaller with forward and backward dust ring inner distance respectively, when running car before dust ring 2, rear dust ring 6 with intermediate propeller shaft height During speed rotation, the preceding dust ring 2 of drive, the inner side of rear dust ring 6 rotate together with the air between the both ends of intermediate supports bushing 4, these The gas of rotation by the increased many trapezoidal helical teeth of middle part front/rear end of intermediate supports bushing 4 due to being stopped, it will edge The direction flowing of these helical teeth, because the direction of helical teeth is consistent with the rotation direction of preceding dust ring 2, rear dust ring 6, in preceding dust ring 2nd, air-flow from inside to outside is produced in the middle part of the inner side of rear dust ring 6 and intermediate supports bushing between the helical teeth of front/rear end, equivalent to taking out Air pump, it is evacuated from inside to outside, prevents the foreign matters such as the dust rainwater of outside from entering Bearing inner, while the middle part of intermediate supports bushing 4 The air-flow of front end outflow will fall into intermediate supports bushing together with the air-flow backward that the outer rim side of the preceding outer incline of dust ring 2 is formed The foreign matters such as the dust rainwater in 4 middle part front end spill annular grooves are discharged by the hole in the middle part of intermediate supports bushing, intermediate supports bushing 4 The negative pressure that the air-flow of middle part rear end outflow is then formed with the outer rim side of the rear end of intermediate supports bushing 4 and rear dust ring outer incline is formed Suction the foreign matters such as the dust rainwater fallen into the middle part rear end spill annular groove of intermediate supports bushing 4 are discharged together, prevent extraneous Dust and the foreign matter such as rainwater enter Bearing inner, intermediate supports bearing non-contact formula is dust-proof anti-when realizing galloping Water, in the absence of abrasion and the problems such as aging, the service life of intermediate propeller shaft intermediate supports bearing is improved, simultaneously because fully Contactless dustproof and waterproof structure is formed using parts self structure, simple in construction, cost is relatively low.

It should be appreciated that the utility model scope of the claimed is not limited to non-limiting embodiments, it should be understood that non-limiting reality Scheme is applied to illustrate as just example.The desired substantive protection domain of the application is more embodied in independent claims The scope of offer, and its dependent claims.

Claims

1. a kind of contactless intermediate supports dustproof and waterproof structure of automobile middle transmission shaft, it includes：Through intermediate supports bearing (5) The intermediate propeller shaft central siphon assembly (1) and universal-joint fork (7) of connection, it is characterised in that：

Also have on the intermediate supports bearing (5)：Around the intermediate supports bushing (4) of arrangement, the preceding dust ring positioned at both ends (2) and rear dust ring (6), the preceding dust ring (2) and it is described after dust ring (6) with the intermediate propeller shaft central siphon assembly (1) Rotate；

The intermediate supports bushing (4) has：Positioned at its excircle and equally distributed through hole (8) and positioned at middle part front and back end The outer of spill annular groove (9), the preceding dust ring (2) and the rear dust ring (6) is arranged in the spill annular groove (9), And the preceding dust ring (2) and the rear dust ring (6) are respectively through the spill annular groove (9) and the through hole (8) gas connection.

2. a kind of contactless intermediate supports dustproof and waterproof structure of automobile middle transmission shaft as claimed in claim 1, its feature It is：The intermediate supports bushing (4) also has trapezoidal helical teeth (10) on the front/rear end of middle part, the helical teeth (10) Respectively positioned at the preceding dust ring (2) and the inner side of the rear dust ring (6).

3. a kind of contactless intermediate supports dustproof and waterproof structure of automobile middle transmission shaft as claimed in claim 2, its feature It is：The helical teeth (10) tilts laterally along clockwise direction in the front end of the intermediate supports bushing (4), the helical teeth (10) tilted laterally in the counterclockwise direction in the rear end of the intermediate supports bushing (4).

4. a kind of contactless intermediate supports dustproof and waterproof structure of automobile middle transmission shaft as claimed in claim 3, its feature It is：The outside of the intermediate supports bushing (4) is fixedly connected with fixed support (3).

5. a kind of contactless intermediate supports dustproof and waterproof structure of automobile middle transmission shaft as claimed in claim 4, its feature It is：The diameter of the rear and front end part of the through hole (8) is more than the diameter of mid portion.