CN213039820U

CN213039820U - Anti-drop bent axle oil blanket

Info

Publication number: CN213039820U
Application number: CN202021991408.7U
Authority: CN
Inventors: 胡培基; 刘春阳
Original assignee: Zhejiang Oufu Sealing Parts Co ltd
Current assignee: Zhejiang Oufu Sealing Parts Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-04-23
Anticipated expiration: 2030-09-11

Abstract

The application relates to the technical field of sealing elements and discloses an anti-drop crankshaft oil seal, which comprises an oil seal main body, the oil seal main body comprises a seal main lip, a dustproof auxiliary lip, an elastic arm and a rubber outer diameter, the right end of the elastic arm is fixedly connected with the outer diameter of the rubber, the sealing main lip is fixedly connected with the left end of the elastic arm, the dustproof auxiliary lip is integrally connected with the sealing main lip, an annular air chamber is arranged in the rubber outer diameter along the circumferential direction of the rubber outer diameter, calcium sulphoaluminate is filled in the annular air chamber, a deformation film wrapping the annular air chamber is fixedly connected on the side wall of the outer diameter of the rubber, still open the packing groove with annular air chamber intercommunication on the rubber external diameter, go back fixedly connected with and be used for plugging up the rubber ring of packing groove notch on the rubber external diameter, this application has the effect that prevents that the bent axle oil blanket from droing from the crankcase when high temperature.

Description

Anti-drop bent axle oil blanket

Technical Field

The application relates to the field of sealing elements, in particular to an anti-drop crankshaft oil seal.

Background

The crankshaft oil seal is a sealing element between the crankshaft and the crankcase of the engine, and has the main function of preventing engine oil from leaking; belongs to the key parts of the engine, and the sealing performance of the engine directly restricts the overall level of the engine.

In view of the above-mentioned related art, there are also drawbacks: when the engine runs, high-temperature combustion gas enters the crankcase through the piston, so that the pressure of the crankcase is increased, and the oil seal is easy to fall off due to overhigh pressure.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, the purpose of this application is to provide an anti-drop bent axle oil blanket, has the effect that prevents that the bent axle oil blanket from droing from the crankcase when high temperature.

The technical purpose of the application is realized by the following technical scheme:

the utility model provides an anti-drop bent axle oil blanket, including the oil blanket main part, the oil blanket main part is including sealed main lip, dustproof supplementary lip, elastic arm and rubber external diameter, the right-hand member and the rubber external diameter fixed connection of elastic arm, sealed main lip fixed connection is in the left end of elastic arm, and dustproof supplementary lip and sealed main lip body coupling, annular air chamber has been seted up along the circumference of rubber external diameter in the rubber external diameter, the annular air chamber intussuseption is filled with calcium sulphoaluminate, the deformation membrane of fixedly connected with parcel annular air chamber still on the lateral wall of rubber external diameter, still open the packing groove with the annular air chamber intercommunication on the rubber external diameter, it is used for plugging up the rubber ring of packing groove notch still to fixedly connected with on the rubber external diameter.

Through adopting above-mentioned technical scheme, produce high temperature when the engine when the operation in the crankcase, make the interior calcium sulfoaluminate inflation of annular gas chamber with the help of high temperature, make the deformation membrane produce deformation after the calcium sulfoaluminate inflation and make deformation protruding, and bellied deformation membrane can extrude the crankcase, makes the tight card of bent axle oil blanket on the crankcase to bent axle oil blanket drops from the crankcase when preventing high temperature.

The application is further configured to: the packing grooves are uniformly provided with a plurality of packing grooves along the circumferential direction of the outer diameter of the rubber.

Through adopting above-mentioned technical scheme, the design of a plurality of packing grooves has and makes things convenient for the staff to fill calcium sulphoaluminate fast in the annular air chamber.

The application is further configured to: the rubber ring is fixedly connected with the groove bottom of the insertion groove and the inner groove wall through glue.

Through adopting above-mentioned technical scheme, the cell wall of insertion groove can play the effect of guide calcium sulfoaluminate from the filler groove inflow annular air chamber, connects the rubber ring through glue simultaneously, makes things convenient for the rubber ring to connect and is fixed in the insertion groove.

The application is further configured to: and a plurality of annular iron bars are fixedly arranged on the outer contour of the deformation film.

Through adopting above-mentioned technical scheme, extrude the crankcase along with bellied deformation membrane when annular ironbar for the tight card of bent axle oil blanket is on the crankcase, and bent axle oil blanket drops from the crankcase when preventing high temperature.

The application is further configured to: and a spring ring is embedded in one end of the seal main lip, which faces the elastic arm.

Through adopting above-mentioned technical scheme, after oil blanket main part operation a period, the radial from the tight power of the rubber near sealed contact surface reduces or disappears, and the spring coil is because the radial from the tight power of the elastic action of self continuously compensation main lip, guarantees the continuous dynamic seal of the contact surface of oil blanket main part and automobile parts.

The application is further configured to: and one end of the main sealing lip, which faces the elastic arm, is provided with a spring groove for inserting a spring coil.

Through adopting above-mentioned technical scheme, the spring coil is located the spring inslot and has the effect that prevents that the spring coil from deviating from in the sealed main lip.

The application is further configured to: and a weight reduction groove is formed in the inner side wall of one end of the rubber outer diameter close to the elastic arm along the circumferential direction.

Through adopting above-mentioned technical scheme, subtract heavy groove and have the effect that plays the lightweight to supporting framework.

The application is further configured to: the rubber outer diameter is internally wrapped with a supporting framework, and the supporting framework is made of metal pieces.

Through adopting above-mentioned technical scheme, support the skeleton in order to guarantee the shape of fixed rubber external diameter and strengthen the required intensity of rubber external diameter.

To sum up, the beneficial effect of this application is:

when the engine runs, high temperature is generated in the crankcase, calcium sulphoaluminate in the annular air chamber is expanded by virtue of the high temperature, and the deformation film is deformed to enable the deformation to be convex after the calcium sulphoaluminate is expanded. A plurality of annular iron strips are fixedly arranged on the outer contour of the deformation film, and when the annular iron strips extrude the crankcase along with the raised deformation film, the crankshaft oil seal is tightly clamped on the crankcase, so that the crankshaft oil seal is prevented from falling off from the crankcase at high temperature; the spring ring continuously compensates the radial self-tightening force of the main lip due to the elastic action of the spring ring, and continuous dynamic sealing of the contact surface of the oil seal main body and the automobile part is guaranteed.

Drawings

Fig. 1 is a schematic cross-sectional structure view of an oil seal main body in an embodiment of the present application.

Reference numerals: 1. an oil seal main body; 2. sealing the primary lip; 3. dust-proof auxiliary lips; 4. a resilient arm; 5. the outer diameter of the rubber; 6. an annular air chamber; 7. deforming the film; 8. a packing groove; 9. a rubber ring; 10. an annular iron block; 11. a spring ring; 12. a spring slot; 13. a weight reduction groove; 14. a support framework; 15. and inserting the groove.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses anti-drop bent axle oil blanket. As shown in fig. 1, the anti-drop crankshaft oil seal comprises an oil seal main body 1, wherein the oil seal main body 1 is of an axisymmetric structure, and the oil seal main body 1 is annular. The right end of elastic arm 4 and rubber external diameter 5 fixed connection, seal owner lip 2 fixed connection in the left end of elastic arm 4, and dustproof supplementary lip 3 and seal owner lip 2 body coupling. And a support framework 14 made of metal parts is wrapped inside the rubber outer diameter 5. The shape of the rubber outer diameter 5 is secured and the strength required for reinforcing the rubber outer diameter 5 is secured by the supporting frame 14. And a lightening groove 13 is formed in the inner side wall of one end, close to the elastic arm 4, of the rubber outer diameter 5 along the circumferential direction, and the lightening groove 13 plays a role in lightening the support framework 14.

As shown in figure 1, an annular air chamber 6 is arranged in the rubber outer diameter 5 along the circumferential direction of the rubber outer diameter 5, and a deformation film 7 wrapping the annular air chamber 6 is fixedly connected to the side wall of the rubber outer diameter 5. The rubber outer diameter 5 is also provided with a packing groove 8 communicated with the annular air chamber 6, and the packing groove 8 is uniformly provided with a plurality of packing grooves along the circumferential direction of the rubber outer diameter 5. An insertion groove 15 communicating with the notches of the plurality of packing grooves 8 is further formed in the rubber outer diameter 5, and when a worker adds calcium sulfoaluminate into the annular air chamber 6 through the packing grooves 8, calcium sulfoaluminate powder is first added into the insertion groove 15 and the wall of the insertion groove 15 serves to guide calcium sulfoaluminate from the packing grooves 8 to the annular air chamber 6. After the annular air chamber 6 is filled with the calcium sulphoaluminate, the operator plugs the notch of the filling groove 8 by using the rubber ring 9 through the glue. To avoid calcium sulphoaluminate from flowing out of the annular gas chamber 6.

As shown in fig. 1, when a high temperature is generated in the crankcase when the engine is running, calcium sulfoaluminate in the annular air chamber 6 is expanded by the high temperature, and the deformation film 7 is deformed to make the deformation bulge after the calcium sulfoaluminate is expanded. Still fixedly on the outline of deformation membrane 7 be provided with a plurality of annular iron plates 10, extrude the crankcase along with bellied deformation membrane 7 as annular ironbar for the tight card of bent axle oil blanket is on the crankcase, and bent axle oil blanket drops from the crankcase when preventing high temperature.

As shown in fig. 1, a spring groove 12 is further opened at the end of the main seal lip 2 facing the elastic arm 4, a spring ring 11 is embedded in the spring groove 12, and the spring ring 11 is located in the spring groove 12 to have the effect of preventing the spring ring 11 from coming out of the main seal lip 2. After the oil seal main body 1 runs for a period of time, the radial self-tightening force of the rubber near the contact surface of the main sealing lip 2 is reduced or disappears, and the spring ring 11 continuously compensates the radial self-tightening force of the main lip due to the elastic action of the spring ring, so that the continuous dynamic sealing of the contact surface of the oil seal main body 1 and the automobile part is ensured.

The implementation principle of the embodiment of the application is as follows:

the staff adds calcium sulphoaluminate towards annular air chamber 6 in through packing groove 8, later seals the notch of packing groove 8 through rubber ring 9, later when producing high temperature in the crankcase when the engine is in operation, makes the calcium sulphoaluminate inflation in annular air chamber 6 with the help of high temperature, through fixed annular iron plate 10 that sets up on deformation membrane 7 to the extrusion crankcase for the tight card of bent axle oil blanket is on the crankcase, and bent axle oil blanket drops from the crankcase when preventing high temperature.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an anti-drop bent axle oil blanket, including oil blanket main part (1), oil blanket main part (1) is including seal owner lip (2), dustproof supplementary lip (3), elastic arm (4) and rubber external diameter (5), the right-hand member and the rubber external diameter (5) fixed connection of elastic arm (4), seal owner lip (2) fixed connection is in the left end of elastic arm (4), and dustproof supplementary lip (3) and seal owner lip (2) body coupling, its characterized in that: annular air chamber (6) have been seted up along the circumference of rubber external diameter (5) in rubber external diameter (5), annular air chamber (6) intussuseption is filled with calcium sulfoaluminate, deformation membrane (7) of still fixedly connected with parcel annular air chamber (6) on the lateral wall of rubber external diameter (5), still open on rubber external diameter (5) and filled groove (8) with annular air chamber (6) intercommunication, still fixedly connected with is used for plugging up rubber ring (9) of filled groove (8) notch on rubber external diameter (5).

2. An anti-drop crankshaft oil seal according to claim 1, characterized in that: the packing grooves (8) are uniformly arranged along the circumferential direction of the rubber outer diameter (5).

3. An anti-drop crankshaft oil seal according to claim 2, characterized in that: the rubber outer diameter (5) is also provided with an insertion groove (15) communicated with the notches of the plurality of filling grooves (8), and the rubber ring (9) is fixedly connected with the groove bottom of the insertion groove (15) and the inner groove wall through glue.

4. An anti-drop crankshaft oil seal according to claim 1, characterized in that: and a plurality of annular iron bars are fixedly arranged on the outer contour of the deformation film (7).

5. An anti-drop crankshaft oil seal according to claim 1, characterized in that: and a spring ring (11) is embedded into one end, facing the elastic arm (4), of the main sealing lip (2).

6. An anti-drop crankshaft oil seal according to claim 5, characterized in that: one end of the seal main lip (2) facing the elastic arm (4) is provided with a spring groove (12) for inserting a spring coil (11).

7. An anti-drop crankshaft oil seal according to claim 1, characterized in that: and a weight reduction groove (13) is formed in the inner side wall of one end, close to the elastic arm (4), of the rubber outer diameter (5) along the circumferential direction.

8. An anti-drop crankshaft oil seal according to claim 1, characterized in that: the rubber external diameter (5) is internally wrapped with a supporting framework (14), and the supporting framework (14) is made of metal pieces.