CN212868440U - Combined oil seal for axle - Google Patents

Abstract

The utility model relates to a combined oil seal for an axle, which comprises an inner seal body and an outer seal body, wherein the inner seal body comprises an inner framework and an inner rubber body, the cross section of the inner framework is in an inverted L shape, the inner framework comprises an inner fixing part and an inner sealing part, the inner seal body is fixed on the axle through the inner fixing part, the inner rubber body comprises a main waterproof lip, and the main waterproof lip is wrapped to the outer edge of the inner sealing part; the outer sealing body comprises an outer framework and an outer rubber body, the cross section of the outer framework is L-shaped, the outer framework comprises an outer fixing part and an outer sealing part, the outer sealing body is fixed to a vehicle body through the outer fixing part, the outer rubber body comprises a secondary sealing lip, and the secondary sealing lip is arranged at one end, far away from the outer fixing part, of the outer sealing part; the main waterproof lip abuts against the inner side of the outer fixing portion, and the auxiliary sealing lip abuts against the outer side of the inner fixing portion. Utility model's an usage sets up twice seal lip, can improve waterproof effect, avoids muddy water to get into inside the axle.

Description

Combined oil seal for axle

Technical Field

The utility model relates to a sealed technical field, more specifically, the utility model relates to a combination oil blanket is used to axle.

Background

The requirement of the country to the environmental protection is higher and higher now, and the commercial car of building site work all need wash chassis system when passing in and out the building site, can wash chassis system with water during the washing even needs whole car pond of crossing. The oil seal of the axle lubrication system has new requirements, and the oil seal can seal the lubricating oil in the axle and prevent external muddy water from entering the axle.

The existing common oil seal is provided with a dust lip, but the dust lip can only prevent a small amount of external dust from entering the axle and can not prevent a large amount of external muddy water.

Therefore, a novel oil seal is needed to be designed, the requirement for preventing a large amount of external muddy water from entering the interior of the axle can be met, and the requirement for long-term running of a vehicle chassis system in water can even be met.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at solve current axle oil blanket and can't block the inside problem of a large amount of muddy water entering axle.

According to one aspect of the utility model, a combination oil seal for an axle is provided, including the inner seal body and the outer seal body that nest each other, the inner seal body includes inner frame and interior rubber body, the cross section of inner frame is "L" shape of inversion, the inner frame includes interior fixed part and interior sealing, the inner seal body passes through the interior fixed part to be fixed to epaxially, the interior rubber body includes main waterproof lip, main waterproof lip parcel is to the outward flange of interior sealing; the outer sealing body comprises an outer framework and an outer rubber body, the cross section of the outer framework is L-shaped, the outer framework comprises an outer fixing part and an outer sealing part, the outer sealing body is fixed to a vehicle body through the outer fixing part, the outer rubber body comprises a secondary sealing lip, and the secondary sealing lip is arranged at one end, far away from the outer fixing part, of the outer sealing part; the main waterproof lip abuts against the inner side of the outer fixing portion, and the auxiliary sealing lip abuts against the outer side of the inner fixing portion.

Through this scheme, establish the internal seal body cover to epaxial, the external seal body is fixed to the automobile body on, makes main water lip can block a large amount of muddy water and get into the oil blanket, and the a small amount of muddy water that gets into the oil blanket can be blockked by vice seal lip, sets up twice seal lip, can improve waterproof effect, avoids inside muddy water gets into the axle.

Preferably, a spring groove is formed in the bottom of the secondary sealing lip, a fastening spring is sleeved in the spring groove, and the fastening spring hoops the secondary sealing lip on the inner fixing portion.

Through this scheme, fastening spring can improve the holistic stability of this device with the firm fixed to the inner seal body of outer seal body to can improve vice seal lip's sealed effect.

Preferably, the auxiliary sealing lip comprises an auxiliary waterproof lip and an oil-proof lip, the auxiliary waterproof lip is arranged on one side, close to the main waterproof lip, of the auxiliary sealing lip, and the spring groove is formed in the back face of the oil-proof lip.

Through this scheme, vice water lip can play the inside effect that prevents that the water in the oil blanket from getting into the axle, and grease proofing lip can play sealed effect to the inside lubricating oil of axle, avoids the oil leak, improves the waterproof and leak protection effect of this oil blanket.

Preferably, the top of the inner fixing portion is recessed towards one side of the outer sealing body to form an inner sealing groove, the inner rubber body further comprises an inner sealing ring, and the inner sealing ring extends into the inner sealing groove and protrudes out of the inner sealing groove.

Through this scheme, the sealed effect of seal and axle in the gap improvement between interior seal and the axle can be reduced to interior seal and the fixed effect between the axle can improve.

Preferably, the bottom of the outer fixing portion is recessed towards one side of the inner sealing body to form an outer sealing groove, the outer rubber body further comprises an outer sealing ring, and the outer sealing ring extends into the outer sealing groove and protrudes out of the outer sealing groove.

Through this scheme, the external seal ring can reduce the gap between external seal body and the automobile body, improves the sealed effect of external seal body and automobile body to can improve the fixed effect between external seal body and the automobile body.

Preferably, the top of the outer fixing part is bent outwards at a right angle to form a limiting part.

Through this scheme, play limiting displacement to the installation of this oil blanket, reduce the oil blanket that the axial float caused and drop.

The utility model discloses a technological effect lies in, this oil blanket is applicable to vehicle axle department, sets up twice seal lip, can improve waterproof effect, avoids muddy water to get into inside the axle.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic cross-sectional structure view of a combined oil seal for an axle according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of an inner seal body in the combination oil seal for an axle of fig. 1.

Fig. 3 is a schematic cross-sectional view of the inner skeleton in the inner seal body of fig. 2.

Fig. 4 is a schematic cross-sectional view of an outer seal body in the composite oil seal for an axle of fig. 1.

Fig. 5 is a schematic cross-sectional structure of the exoskeleton in the overseal of fig. 4.

Wherein like parts are designated by like reference numerals throughout the several views; the figures are not drawn to scale.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Examples

As shown in fig. 1 to 5, the combined oil seal for an axle in the embodiment includes an inner sealing body 1100 and an outer sealing body 1200 that are nested with each other, the inner sealing body 1100 includes an inner frame 1110 and an inner rubber body, the cross section of the inner frame 1110 is an inverted "L" shape, the inner frame 1110 includes an inner fixing portion 1111 and an inner sealing portion 1112, the inner sealing body 1100 is fixed to a shaft (not shown in the drawings) by the inner fixing portion 1111, the inner rubber body includes a primary waterproof lip 1121, and the primary waterproof lip 1121 wraps the outer edge of the inner sealing portion 1112; the outer sealing body 1200 includes an outer frame 1210 and an outer rubber body, the cross section of the outer frame 1210 is "L" shaped, the outer frame 1210 includes an outer fixing portion 1211 and an outer sealing portion 1212, the outer sealing body 1200 is fixed to a vehicle body (not shown in the drawings) through the outer fixing portion 1211, the outer rubber body includes a secondary sealing lip 1220, and the secondary sealing lip 1220 is disposed at one end of the outer sealing portion 1212, which is far away from the outer fixing portion 1211; the primary waterproof lip 1121 abuts against the inner side of the outer fixing portion 1211, and the secondary sealing lip 1220 abuts against the outer side of the inner fixing portion 1111.

Through this scheme of this embodiment, establish epaxial with inner seal 1100 cover, outer seal 1200 is fixed to the automobile body on, makes main water lip 1121 can block a large amount of muddy water and get into the oil blanket, and the a small amount of muddy water that gets into the oil blanket can be blockked by vice seal lip 1220, sets up twice seal lip, can improve waterproof effect, avoids muddy water to get into inside the axle.

In this embodiment or other embodiments, the bottom of the secondary sealing lip 1220 is provided with a spring groove (not shown), a fastening spring 1230 is sleeved in the spring groove, and the fastening spring 1230 clamps the secondary sealing lip 1220 to the inner fixing portion 1111. The fastening spring 1230 can firmly fix the outer seal body 1200 to the inner seal body 1100, thereby improving the stability of the entire device and improving the sealing effect of the sub seal lip 1220.

In this embodiment or other embodiments, the secondary sealing lip 1220 includes a secondary water-proof lip 1221 and an oil-proof lip 1222, the secondary water-proof lip 1221 is disposed on the side of the secondary sealing lip 1220 close to the primary water-proof lip 1121, and the spring groove is opened to the back of the oil-proof lip 1222. Vice water lip 1221 can play the inside effect of water entering axle that prevents in the oil blanket, and grease proofing lip 1222 can play the sealing action to the inside lubricating oil of axle, avoids the oil leak, improves the waterproof and leak protection effect of this oil blanket.

In this embodiment or other embodiments, the top of the inner fixing portion 1111 is recessed toward the outer sealing body 1200 to form an inner sealing groove 1113, and the inner rubber body further includes an inner sealing ring 1122, where the inner sealing ring 1122 extends into the inner sealing groove 1113 and protrudes out of the inner sealing groove 1113. The inner seal ring 1122 can reduce the gap between the inner seal 1100 and the shaft, improve the sealing effect between the inner seal 1100 and the shaft, and improve the fixing effect between the inner seal 1100 and the shaft.

In this embodiment or other embodiments, the bottom of the outer fixing portion 1211 is recessed toward the inner seal 1100 to form an outer seal groove 1213, the outer rubber further includes an outer seal ring 1223, and the outer seal ring 1223 extends into the outer seal groove 1213 and protrudes out of the outer seal groove 1213. The outer seal ring 1223 can reduce a gap between the outer seal body 1200 and the vehicle body, improve the sealing effect of the outer seal body 1200 and the vehicle body, and improve the fixing effect between the outer seal body 1200 and the vehicle body.

In this embodiment or other embodiments, the top of the outer fixing portion 1211 is bent outward at a right angle to form a limiting portion 1214. The oil seal is limited in installation, and the falling of the oil seal caused by axial movement is reduced.

A technical effect of this embodiment lies in, and this oil blanket is applicable to vehicle axle department, sets up twice seal lip, can improve waterproof effect, avoids muddy water to get into inside the axle.

Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for purposes of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (6)

1. A combined oil seal for an axle comprises an inner seal body and an outer seal body which are mutually nested, and is characterized in that the inner seal body comprises an inner framework and an inner rubber body, the cross section of the inner framework is inverted L-shaped, the inner framework comprises an inner fixing part and an inner sealing part, the inner seal body is fixed to a shaft through the inner fixing part, the inner rubber body comprises a main waterproof lip, and the main waterproof lip is wrapped on the outer edge of the inner sealing part; the outer sealing body comprises an outer framework and an outer rubber body, the cross section of the outer framework is L-shaped, the outer framework comprises an outer fixing part and an outer sealing part, the outer sealing body is fixed to a vehicle body through the outer fixing part, the outer rubber body comprises a secondary sealing lip, and the secondary sealing lip is arranged at one end, far away from the outer fixing part, of the outer sealing part; the main waterproof lip abuts against the inner side of the outer fixing portion, and the auxiliary sealing lip abuts against the outer side of the inner fixing portion.

2. The combination oil seal for an axle according to claim 1, wherein a spring groove is provided at a bottom of the secondary seal lip, and a fastening spring is fitted in the spring groove and clamps the secondary seal lip to the inner fixing portion.

3. The combination oil seal for the axle according to claim 2, wherein the secondary seal lip comprises a secondary waterproof lip and an oil-proof lip, the secondary waterproof lip is arranged on one side of the secondary seal lip close to the primary waterproof lip, and the spring groove is opened to the back surface of the oil-proof lip.

4. The combination oil seal for the axle according to claim 3, wherein the top of the inner fixing portion is recessed toward one side of the outer sealing body to form an inner sealing groove, and the inner rubber body further comprises an inner sealing ring extending into and protruding out of the inner sealing groove.

5. The combination oil seal for the axle according to claim 3, wherein the bottom of the outer fixing portion is recessed toward one side of the inner seal body to form an outer seal groove, and the outer rubber body further comprises an outer seal ring extending into the outer seal groove and protruding out of the outer seal groove.

6. The combination oil seal for the axle according to claim 5, wherein the top of the outer fixing portion is bent outward at a right angle to form a limiting portion.

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