CN219932952U

CN219932952U - Framework oil seal structure

Info

Publication number: CN219932952U
Application number: CN202321676723.4U
Authority: CN
Inventors: 赵玲方
Original assignee: Zhejiang Faguang Rubber Seal Parts Co ltd
Current assignee: Zhejiang Faguang Rubber Seal Parts Co ltd
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2023-10-31
Anticipated expiration: 2033-06-28

Abstract

The utility model provides a framework oil seal structure, and belongs to the technical field of sealing parts. It has solved the current poor problem of skeleton oil blanket seal stability. The framework oil seal structure comprises a sealing body, wherein a shaft hole through which a shaft passes is formed in the sealing body, a first sealing lip and a second sealing lip are arranged on the sealing body, a supporting framework is arranged in the sealing body, an outer supporting part extending to the outside of the sealing body is arranged at the bottom end of the supporting framework, two sides of the outer supporting part are abutted to be supported on the side surfaces of the first sealing lip and the second sealing lip, and a locking spring used for locking the first sealing lip and a supporting structure used for keeping the locking spring stable are arranged in the sealing body. The utility model has the advantage of good sealing stability.

Description

Framework oil seal structure

Technical Field

The utility model belongs to the technical field of sealing parts and relates to a framework oil seal structure.

Background

Oil seals are a common term for seals, simply referred to as lubrication seals, and are a component of a device used in machines to prevent fluid (mostly lubrication) from escaping from the joint (mostly the joint surface of the component or the shaft).

The existing framework oil seal structure mainly comprises a rubber oil seal body with a sealing lip, a metal framework and a self-tightening spiral spring, for example, a Chinese patent is disclosed on the net as follows: the patent literature of a skeleton oil seal ring (application number: 201821972944.5) discloses a skeleton oil seal ring, which comprises a skeleton and a glue layer coated on the surface of the skeleton, wherein the outer circular wall of the glue layer is provided with at least two circumferential raised strips, the circumferential raised strips are arranged at axial intervals, circumferential grooves are arranged between adjacent circumferential raised strips, the circumferential raised strips are provided with a plurality of parting joints, and the circumferential raised strips are divided into a plurality of raised strip sections by the parting joints. As can be seen from the specification and the drawing of the patent document, the sealing lip aims at improving the outer circular wall of the adhesive layer to solve the technical problem that the prior framework oil seal is damaged in large area due to extrusion and shearing, but has the problem of poor sealing stability due to simple structure

Disclosure of Invention

The utility model aims to solve the problems and provides a framework oil seal structure with good sealing stability.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a skeleton oil blanket structure, includes the sealing body, its characterized in that, the sealing body on set up the shaft hole that the axle passed, the sealing body on be equipped with first seal lip and second seal lip, the sealing body in be provided with braced frame, braced frame's bottom has the outer supporting part that extends to the sealing body outward, the both sides butt of outer supporting part supports on the side surface of first seal lip and second seal lip, the sealing body in be provided with the locking spring that is used for first seal lip locking and be used for keeping the stable bearing structure of locking spring.

In the above-mentioned skeleton oil seal structure, be formed with the holding tank that is used for holding outer supporting part between first seal lip and the second seal lip, the degree of depth of holding tank is greater than the thickness of outer supporting part, and outer supporting part wholly holds in the holding tank.

In the framework oil seal structure, the second sealing lip is bent towards one side deviating from the first sealing lip, and the bottom end face of the first sealing lip is flush with the bottom end face of the second sealing lip.

In the framework oil seal structure, the supporting framework is distributed in the sealing body in an L shape.

In the above-mentioned skeleton oil seal structure, one side tip that first seal lip kept away from the second seal lip has the bellying of upwards buckling, be formed with the spring mounting groove between bellying and the upper surface of last first seal lip.

In the above-mentioned framework oil seal structure, the supporting structure includes a surrounding ring edge arranged on the sealing body, and the surrounding ring edge can bend towards one side of the spring mounting groove to surround the spring mounting groove.

In the above-mentioned framework oil seal structure, the surrounding ring edge is made of deformable material.

In the framework oil seal structure, a protection framework is arranged in the sealing body, the protection framework is arranged on the upper side of the surrounding ring edge, one end of the protection framework is embedded into the sealing body, and the other end of the protection framework is an open end.

In the above-mentioned framework oil seal structure, an inward concave avoidance groove is formed in the lower surface of the protective framework.

Compared with the prior art, the utility model has the advantages that: in order to keep the relative stability between first seal lip and the second seal lip, utilize outer supporting part to prescribe a limit to both positions, prevent that it from producing phenomenon such as dislocation, and then promote the oil blanket effect, it is spacing to lock spring through utilizing bearing structure, prevent that lock spring from appearing dislocation because of receiving external force influence, promote the stability of oil blanket structure oil blanket.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

Fig. 1 is a schematic view of the mounting structure of the present utility model.

Fig. 2 is a schematic diagram of the overall structure of the present utility model.

In the figure, 1, a sealing body; 2. a shaft hole; 3. a first sealing lip; 4. a second sealing lip; 5. a support skeleton; 6. an outer support portion; 7. a support structure; 8. a receiving groove; 9. a boss; 10. a spring mounting groove; 11. surrounding the annular edge; 12. a protective skeleton; 13. an avoidance groove; 14. and a locking spring.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 1 to 2, a framework oil seal structure comprises a seal body 1, a shaft hole 2 through which a shaft passes is formed in the seal body 1, a first seal lip 3 and a second seal lip 4 are arranged on the seal body 1, a supporting framework 5 is arranged in the seal body 1, an outer supporting portion 6 extending to the outside of the seal body 1 is arranged at the bottom end of the supporting framework 5, two sides of the outer supporting portion 6 are abutted to be supported on side surfaces of the first seal lip 3 and the second seal lip 4, and a locking spring 14 for locking the first seal lip 3 and a supporting structure 7 for keeping the locking spring 14 stable are arranged in the seal body 1.

In this embodiment, the second sealing lip 4 on the sealing body 1 is used for blocking dust, the first sealing lip 3 is used for the oil blanket of driving medium, when whole assembly, oil blanket structure cover is located on the transmission shaft, first sealing lip 3 and second sealing lip 4 all can the butt on the transmission shaft, in order to keep the relative stability between first sealing lip 3 and the second sealing lip 4, utilize outer supporting part 6 to inject both positions, prevent that it from producing phenomenon such as dislocation, and then promote the oil blanket effect, limit locking spring 14 through utilizing bearing structure 7, prevent that locking spring 14 from appearing misplacement because of receiving external force influence, promote the stability of oil blanket structure oil blanket.

In the present embodiment, a receiving groove 8 for receiving the outer support portion 6 is formed between the first seal lip 3 and the second seal lip 4, the depth of the receiving groove 8 is greater than the thickness of the outer support portion 6, and the outer support portion 6 is entirely received in the receiving groove 8. The outer supporting portion 6 is located in the accommodating groove 8, two sides of the outer supporting portion 6 are respectively abutted to the side portions of the first sealing lip 3 and the second sealing lip 4 to support the outer supporting portion and the side portions of the first sealing lip and the second sealing lip, meanwhile, the depth of the accommodating groove 8 is larger than the thickness of the outer supporting portion 6, the outer supporting portion 6 cannot be in contact with the surface of the transmission shaft, and friction is reduced.

In the present embodiment, the second seal lip 4 is provided to be bent toward the side facing away from the first seal lip 3, and the bottom end face of the first seal lip 3 is flush with the bottom end face of the second seal lip 4. The second sealing lip 4 is bent outwards to effectively prevent impurities such as dust from entering, and the bottom end face of the first sealing lip 3 is flush with the bottom end face of the second sealing lip 4 so as to keep tightness of the two.

In order to improve the strength of the sealing element, the supporting framework 5 is distributed in the sealing body 1 in an L shape. The upper end of the supporting framework 5 is transversely arranged in the sealing body 1, and the lower end of the supporting framework 5 is vertically arranged in the sealing body 1, so that the transverse and vertical strength of the sealing piece is kept.

In this embodiment, in order to maintain the connection stability of the locking spring 14 relative to the first sealing lip 3, the end of the side of the first sealing lip 3 away from the second sealing lip 4 is provided with an upward bent protruding portion 9, a spring mounting groove 10 is formed between the protruding portion 9 and the upper surface of the upper first sealing lip 3, and the locking spring 14 is integrally sleeved in the spring mounting groove 10 of the sealing member to lock the first sealing lip 3, so that the locking spring can be better tightly connected with the transmission shaft.

In the present embodiment, the support structure 7 includes a surrounding rim 11 provided on the sealing body 1, and the surrounding rim 11 may be bent toward the spring mounting groove 10 side to surround the spring mounting groove 10. Specifically, the surrounding rim 11 is made of a deformable material, which may be a rubber material, and the surrounding rim 11 may be integrally formed with the sealing body 1.

The surrounding ring edge 11 is bent towards one side of the spring mounting groove 10 in a normal use state, a limiting space is formed between the surrounding ring edge 11 and the spring mounting groove 10, the locking spring 14 is located in the limiting space, and the situation that the sealing performance of the first sealing lip 3 is influenced by the fact that the locking spring 14 is separated from the spring mounting groove 10 due to the influence of external force is avoided.

In this embodiment, in order to protect the surrounding rim 11, a protection frame 12 is disposed in the sealing body 1, the protection frame 12 is disposed on the upper side of the surrounding rim 11, and one end of the protection frame 12 is embedded into the sealing body 1, and the other end of the protection frame 12 is an open end. The protective framework 12 is also integrally arranged in an L shape, plays a protective role on the surrounding ring edge 11, and prevents the surrounding ring edge 11 from deforming due to the conditions of external force extrusion and the like so as to separate the locking spring 14 from the spring mounting groove 10.

Specifically, in order to facilitate bending the surrounding ring edge 11, the locking spring 14 can be more conveniently clamped into the spring mounting groove 10, and the lower surface of the protective framework 12 is provided with an inward concave avoiding groove 13.

The working principle of the utility model is as follows: the second seal lip 4 on the sealing body 1 is used for blocking dust, the first seal lip 3 is used for the oil blanket of driving medium, when whole assembly, oil blanket structure cover is located on the transmission shaft, first seal lip 3 and second seal lip 4 all can the butt on the transmission shaft, in order to keep the relative stability between first seal lip 3 and the second seal lip 4, utilize outer supporting part 6 to inject both positions, prevent that it from producing phenomenon such as dislocation, and then promote the oil blanket effect, limit locking spring 14 through utilizing bearing structure 7, prevent that locking spring 14 from appearing misplacing because of receiving external force influence, promote the stability of oil blanket structure oil blanket.

Specifically, the surrounding ring edge 11 is bent towards one side of the spring mounting groove 10 in a normal use state, a limiting space is formed between the surrounding ring edge 11 and the spring mounting groove 10, the locking spring 14 is located in the limiting space, when the locking spring 14 is mounted, the surrounding ring edge 11 can be operated to be turned outwards, the locking spring 14 is clamped into the spring mounting groove 10, the surrounding ring edge 11 is restored, the locking spring 14 plays a tightening role on the first sealing lip 3, and the inner surface of the first sealing lip 3 is always attached to the surface of the transmission shaft.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although terms such as the sealing body 1, the shaft hole 2, the first sealing lip 3, the second sealing lip 4, the supporting frame 5, the outer supporting portion 6, the supporting structure 7, the receiving groove 8, the boss 9, the spring mounting groove 10, the surrounding rim 11, the protective frame 12, the escape groove 13, the locking spring 14, etc. are used more herein, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the nature of the utility model and should be construed in a manner consistent with their spirit and scope.

Claims

1. The utility model provides a skeleton oil blanket structure, includes seal body (1), its characterized in that, seal body (1) on set up shaft hole (2) that the axle passed, seal body (1) on be equipped with first seal lip (3) and second seal lip (4), seal body (1) in be provided with braced frame (5), the bottom of braced frame (5) has outer supporting part (6) that extend to seal body (1), the both sides butt of outer supporting part (6) support on the side surface of first seal lip (3) and second seal lip (4), seal body (1) in be provided with locking spring (14) that are used for first seal lip (3) locking and be used for keeping locking spring (14) stable bearing structure (7).

2. A skeleton oil seal structure according to claim 1, wherein a receiving groove (8) for receiving the outer support portion (6) is formed between the first seal lip (3) and the second seal lip (4), the depth of the receiving groove (8) is larger than the thickness of the outer support portion (6), and the outer support portion (6) is integrally received in the receiving groove (8).

3. A skeleton oil seal structure according to claim 1, wherein the second seal lip (4) is bent toward a side facing away from the first seal lip (3), and a bottom end face of the first seal lip (3) is flush with a bottom end face of the second seal lip (4).

4. The framework oil seal structure according to claim 1, wherein the supporting framework (5) is L-shaped and distributed in the sealing body (1).

5. A skeleton oil seal structure according to claim 1, wherein the end of the first seal lip (3) on the side away from the second seal lip (4) is provided with an upwardly bent boss (9), and a spring mounting groove (10) is formed between the boss (9) and the upper surface of the upper first seal lip (3).

6. A skeleton oil seal structure according to claim 5, wherein the supporting structure (7) comprises a surrounding rim (11) arranged on the sealing body (1), and the surrounding rim (11) can be bent towards one side of the spring mounting groove (10) to surround the spring mounting groove (10).

7. A skeleton oil seal according to claim 6, wherein the surrounding rim (11) is made of deformable material.

8. The framework oil seal structure according to claim 6, wherein a protective framework (12) is arranged in the sealing body (1), the protective framework (12) is arranged on the upper side of the surrounding annular edge (11), one end of the protective framework (12) is embedded into the sealing body (1), and the other end of the protective framework (12) is an open end.

9. The framework oil seal structure according to claim 8, characterized in that the lower surface of the protective framework (12) is provided with an inward concave avoidance groove (13).