CN210800059U

CN210800059U - Double-spring combined oil seal

Info

Publication number: CN210800059U
Application number: CN201920873562.5U
Authority: CN
Inventors: 栾凤山
Original assignee: Xingtai Mountain Special Rubber Products Co ltd
Current assignee: Xingtai Mountain Special Rubber Products Co ltd
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-06-19
Anticipated expiration: 2029-05-30

Abstract

The utility model discloses a two spring combination oil seals relates to oil blanket technical field, has solved the poor or poor problem of manufacturability of prior art combination oil blanket cooperation nature, and its technical essential is: the oil seal comprises an outer oil seal and an inner oil seal, wherein a first framework is arranged in the outer oil seal, a limiting groove for fixing the inner oil seal is arranged on the axial edge of the first framework, a limiting ring matched with the limiting groove on the first framework is arranged on the outer ring of the inner oil seal, a main lip for preventing grease leakage is arranged on the inner ring of the inner oil seal, and a dustproof layer is arranged on the inner ring at the right end of the first framework; the embodiment of the utility model provides an expansion when the steel ring was crossed to the outer loop steel ring resumes the original state establishes the spacing ring card at the spacing inslot for interior oil blanket can not produce axial displacement with outer oil blanket, thereby has increased the cooperation nature of combination oil blanket, and the spacing groove has improved the manufacturability of combination oil blanket for the spacing mode of bending of combination oil blanket among the prior art, makes the combination oil blanket make simpler.

Description

Double-spring combined oil seal

Technical Field

The utility model relates to an oil blanket technical field especially relates to a two spring combination oil seals.

Background

The oil seal is a common name of a sealing element, namely the sealing of lubricating oil, is a mechanical element for sealing grease, and separates a part needing to be lubricated in a transmission part from a force-applying part so as not to allow the lubricating oil to leak; the representative form of the oil seal is TC oil seal, which is a rubber fully covered double lip oil seal with a self-tightening spring.

The combined oil seal is formed by combining a plurality of oil seals in an interference fit manner, the combined oil seal has multiple sealing performance and good sealing effect and is used for heavy pollution or environments with more soil and dust, however, the combined oil seal in the prior art has poor matching performance and is easy to damage due to the fact that the inner oil seal and the outer oil seal are not limited, and has limited combined oil seals, the outer oil seal is more in bending times and poor in manufacturability, so that the double-spring combined oil seal is provided.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to above-mentioned defect, provide a two spring combination oil seals to solve the poor or poor problem of manufacturability of prior art combination oil seal cooperation nature.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a two spring combination oil seals, includes outer oil blanket and interior oil blanket, its characterized in that is equipped with first skeleton in the outer oil blanket, and the axial edge of first skeleton is equipped with the spacing groove that is used for fixed interior oil blanket, is equipped with on the outer loop of interior oil blanket with first skeleton spacing groove complex spacing ring, is equipped with the main lip mouth that is used for preventing the grease leakage on the inner ring of interior oil blanket, is equipped with on the right-hand member inner ring of first skeleton and is used for dirt-proof dust layer.

As a further proposal of the utility model, an outer ring steel ring is arranged in the limiting ring.

As a further proposal of the utility model, the spacing groove is at least provided with one, and the spacing ring is at least provided with one.

As a further proposal of the utility model, two main lips are arranged at the left end and the right end of the inner oil seal respectively.

As a further proposal, the inner oil seal is also provided with a second framework for preventing the deformation of the inner oil seal, and the cross section of the second framework is in L shape.

To sum up, compared with the prior art, the utility model has the following beneficial effects:

the embodiment of the utility model provides an expansion when the steel ring was crossed to the outer loop steel ring resumes the original state establishes the spacing ring card at the spacing inslot for interior oil blanket can not produce axial displacement with outer oil blanket, thereby has increased the cooperation nature of combination oil blanket, and the spacing groove has improved the manufacturability of combination oil blanket for the spacing mode of bending of combination oil blanket among the prior art, makes the combination oil blanket make simpler.

Drawings

Fig. 1 is a schematic structural diagram of a two-spring combination oil seal in embodiment 1.

Fig. 2 is a schematic structural diagram of a two-spring combination oil seal in embodiment 2.

Reference numerals: 1-a first framework, 2-an outer oil seal, 3-a dustproof layer, 4-an inner oil seal, 5-a second framework, 6-an outer ring steel ring and 7-an inner ring steel ring.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

Example 1

As shown in fig. 1, the double-spring combined oil seal comprises an outer oil seal 2 and an inner oil seal 4, wherein the inner oil seal 4 is arranged in the outer oil seal 2 through a limiting mechanism;

a first framework 1 is arranged in the outer oil seal 2, the section of the first framework 1 is L-shaped, a semicircular limiting groove for fixing the inner oil seal 4 is arranged on the axial edge of the first framework 1, a sealing layer of the outer oil seal 2 is fixed on the outer edge and the right end face of the first framework 1, and a square groove for facilitating oil seal fixation is further arranged on the outer oil seal 2; a dustproof layer 3 is arranged on the inner ring at the right end of the first framework 1, the dustproof layer 3 is fixed on the first framework 1, and an auxiliary lip for preventing dust is arranged on the dustproof layer 3;

a semicircular limiting ring matched with the semicircular limiting groove on the first framework 1 is arranged on the outer ring of the inner oil seal 4, an outer ring steel ring 6 is arranged in the limiting ring, the inner oil seal 4 is pressed in the first framework 1 through the outer ring steel ring 6 through elasticity, and the outer ring steel ring 6 and the limiting ring are matched with the limiting groove on the first framework 1 to play a limiting role; a main lip mouth for preventing grease leakage is arranged on an inner ring of the inner oil seal 4, an inner ring steel ring 7 is arranged in the main lip mouth, and the inner ring steel ring 7 plays a role in improving the sealing property;

preferably, in this embodiment, a second framework 5 is further disposed in the inner oil seal 4, the cross section of the second framework 5 is L-shaped, and the second framework 5 plays roles of supporting the inner oil seal 4 and preventing the inner oil seal 4 from deforming;

preferably, in this embodiment, the first frame 1 and the second frame 5 are made of galvanized steel plates, and the outer ring steel ring 6 and the inner ring steel ring 7 are made of manganese steel.

Example 2

As shown in fig. 2, the double-spring combined oil seal comprises an outer oil seal 2 and an inner oil seal 4, wherein the inner oil seal 4 is arranged in the outer oil seal 2 through a limiting mechanism;

a first framework 1 is arranged in the outer oil seal 2, the cross section of the first framework 1 is L-shaped, semicircular limiting grooves for fixing the inner oil seal 4 are arranged on the axial edges of the first framework 1, two limiting grooves are arranged, the sealing layer of the outer oil seal 2 is fixed on the outer edge and the right end face of the first framework 1, and a square groove for facilitating oil seal fixing is further arranged on the outer oil seal 2; a dustproof layer 3 is arranged on the inner ring at the right end of the first framework 1, the dustproof layer 3 is fixed on the first framework 1, and an auxiliary lip for preventing dust is arranged on the dustproof layer 3;

the outer ring of the inner oil seal 4 is provided with semicircular limiting rings matched with the semicircular limiting grooves on the first framework 1, the number of the limiting rings is two, the two limiting rings are respectively arranged at the left end and the right end of the inner oil seal 4, the outer ring steel ring 6 is arranged in the limiting rings, the inner oil seal 4 is pressed in the first framework 1 through the outer ring steel ring 6 through elasticity, and the outer ring steel ring 6 and the limiting rings are matched with the limiting grooves on the first framework 1 to play a limiting role; the inner ring of the inner oil seal 4 is provided with two main lips for preventing grease leakage, the two main lips are respectively arranged at the left end and the right end of the inner oil seal 4, an inner ring steel ring 7 is arranged in each main lip, and the inner ring steel ring 7 plays a role in increasing the sealing property; due to the arrangement of the double main lips, the sealing performance of the oil seal is improved;

preferably, in this embodiment, the first frame 1 and the second frame 5 are made of galvanized steel sheets, and the outer ring steel ring 6 and the inner ring steel ring 7 are made of 301 stainless steel.

In summary, the working principle of the utility model is as follows;

the embodiment of the utility model provides an in inner ring steel ring 7 establishes main lip card epaxial through the contraction effect of steel ring, main lip with the axle be interference fit, make the oil blanket play sealed effect, the expansion when outer ring steel ring 6 passes through the recovery original condition of steel ring is established the spacing ring card at the spacing inslot, make inner oil blanket 4 and outer oil blanket 2 can not produce axial displacement, thereby the cooperation nature of combination oil blanket has been increased, the spacing groove has improved the manufacturability of combination oil blanket for the spacing mode of bending of combination oil blanket among the prior art, make the combination oil blanket make simpler.

It needs to explain specially that, the sealed principle of oil blanket is prior art's application in this application, and the cooperation of spacing groove and spacing ring increases the cooperation nature of combination oil blanket and is the innovation point of this application, and it has effectively solved the poor or poor problem of manufacturability of prior art combination oil blanket cooperation nature.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the invention and for the convenience of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

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 two spring combination oil seals, including outer oil blanket (2) and interior oil blanket (4), a serial communication port, be equipped with first skeleton (1) in outer oil blanket (2), the axial edge of first skeleton (1) is equipped with the spacing groove that is used for fixed interior oil blanket (4), be equipped with on the outer loop of interior oil blanket (4) with first skeleton (1) on spacing groove complex spacing ring, be equipped with the main lip mouth that is used for preventing the grease leakage on the inner ring of interior oil blanket (4), be equipped with on the right-hand member inner ring of first skeleton (1) and be used for dirt-proof dust layer (3).

2. The double-spring combination oil seal as defined in claim 1, wherein an outer ring steel ring (6) is arranged in the limit ring.

3. The dual-spring combination oil seal of claim 1, wherein at least one limiting groove is provided, and at least one limiting ring is provided.

4. A double-spring combination oil seal according to claim 3, wherein two main lips are provided, respectively at the left and right ends of the inner oil seal (4).

5. A double-spring combined oil seal according to any one of claims 1 to 4, characterized in that a second framework (5) for preventing the deformation of the inner oil seal (4) is arranged in the inner oil seal (4), and the section of the second framework (5) is L-shaped.