Framework type oil seal

Abstract

The utility model provides a framework type oil seal which comprises an oil seal body, a dustproof lip and an inner ring groove, the dustproof lip is installed on the inner side of the oil seal body, the inner ring groove is formed below the dustproof lip, a quick release hole is formed in the upper surface of the oil seal body, a quick release rod is arranged above the oil seal body, a piercing part is arranged at the lower end of the quick release rod, and a plurality of through holes are formed in the periphery of the piercing part. An inner screw groove is formed in the upper portion of the quick-release rod, an outer thread is arranged on the upper portion of the piercing portion, a rocker is installed on one side of the upper portion of the quick-release rod, and the interior of the quick-release rod is of a hollow structure, and compared with the prior art, the quick-release device has the advantages that by arranging the quick-release rod, the quick-release hole, the rocker, the outer thread and the inner screw groove, maintenance personnel do not need to use tools such as a crowbar to carry out prying operation; when the oil seal is disassembled, the oil seal body can be easily disassembled only by screwing the quick disassembling rod into the quick disassembling hole, a traditional disassembling method often wastes time and labor, and the quick disassembling design is adopted, so that the disassembling time can be greatly shortened, and damage to surrounding parts cannot be caused in the disassembling process.

Description

Technical Field

[0001] The utility model belongs to the technical field of skeleton type oil seals, in particular to a skeleton type oil seal. Background Art

[0002] Skeleton oil seals are widely used in various mechanical equipment, such as automobile engines, industrial pumps, etc., and play an important role in preventing oil leakage and protecting the normal operation of equipment. The current skeleton oil seals are usually installed in an embedded manner. Although they can be well fixed in the installation position during installation, their embedded structure makes the oil seals not easy to loosen when they need to be disassembled and replaced. When they need to be disassembled and replaced, a crowbar or a flat-head screw head is usually used to lift the oil seal. The operation of using a crowbar or a flat-head screw head to lift the oil seal is not only laborious, but also easy to cause scratches or damage to other components due to misoperation. For example, in some precision equipment, improper operation may cause irreversible damage to key parts such as shafts and cavities, affecting the overall performance and service life of the equipment. Secondly, there are safety hazards in the disassembly process. When using tools to lift the oil seal, a large force needs to be applied, which may cause the tool to slip and cause injury to the operator. Moreover, during the disassembly process, the oil seal may suddenly pop out, posing a potential danger. In order to solve this problem, we have developed a skeleton oil seal. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention aims to provide a skeleton oil seal to solve the problems raised in the above background technology.

[0004] The utility model is realized by the following technical solutions: a skeleton-type oil seal, comprising: an oil seal body, a dust lip and an inner ring groove; a dust lip is installed on the inner side of the oil seal body, an inner ring groove is provided below the dust lip, a quick-release hole is provided on the upper surface of the oil seal body, and a quick-release rod is provided above the oil seal body;

[0005] The quick release rod has a piercing portion at its lower end, a plurality of through holes formed around the piercing portion, an external thread formed above the piercing portion, a rocker mounted on one side of the quick release rod, and a hollow interior connected to the through holes.

[0006] An inner screw groove is provided on the inner wall of the quick-release hole, a bottom hole is opened at the lower part of the quick-release hole, a closing membrane is installed in the middle of the bottom hole, an expansion elastic body is installed in the inner ring groove, and the bottom hole is connected to the interior of the expansion elastic body.

[0007] As a preferred embodiment, a spring lip is installed below the oil seal body, a coil spring is installed above the spring lip, and a rubber sealing body is provided in the oil seal body.

[0008] As a preferred embodiment, a reinforcement skeleton is installed on the inner wall of the oil seal body, and the expansion elastic body is made of nitrile rubber.

[0009] As a preferred embodiment, the diameter of the quick release rod is smaller than the diameter of the quick release hole, and the quick release rod and the rocker are both made of stainless steel.

[0010] As a preferred embodiment, the outer wall of the reinforcing skeleton is embedded in the oil seal body, and the piercing portion is a conical structure.

[0011] As a preferred embodiment, the diameter of the bottom hole is smaller than the diameter of the piercing portion.

[0012] After adopting the above technical solution, the beneficial effects of the utility model are:

[0013] 1. By setting up a quick-release rod, quick-release hole, rocker, external thread and internal screw groove, maintenance personnel no longer need to use tools such as pry bars to perform difficult prying operations. They only need to screw the quick-release rod into the quick-release hole to easily remove the oil seal body. Traditional disassembly methods are often time-consuming and laborious, but this quick-release design can greatly shorten the disassembly time and will not cause damage to surrounding components during the disassembly process.

[0014] 2. By providing the piercing portion, the through hole, the bottom hole, the closing membrane and the expansion elastic body, the piercing portion can penetrate into the bottom hole while the oil seal body is being disassembled. Gas or liquid is added to the expansion elastic body through the through hole to expand it. The pressure generated by the expansion can effectively loosen the connection between the oil seal body and the installation part, further reducing the difficulty of disassembly and making the disassembly process easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 The figure is a schematic diagram of the overall structure of a skeleton type oil seal of the present utility model.

[0017] Figure 2 This is a schematic structural diagram of an oil seal main body in a skeleton-type oil seal of the present invention from a top view.

[0018] Figure 3 This is a schematic structural diagram of an oil seal main body in a skeleton-type oil seal of the present invention from a bottom-up perspective.

[0019] Figure 4 for Figure 1 A magnified schematic diagram of part A.

[0020] Figure 5 for Figure 2 An enlarged schematic diagram of part B.

[0021] In the figure, 1. oil seal body; 2. quick release lever; 3. rocker; 4. dust lip; 5. reinforcement frame; 6. inner ring groove; 7. coil spring; 8. expansion elastomer; 9. external thread; 10. piercing part; 11. through hole; 12. bottom hole; 13. sealing membrane; 14. spring lip; 15. quick release hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figures 1 to 5 The utility model provides a technical solution: a skeleton oil seal, comprising: an oil seal body 1, a dust lip 4 and an inner ring groove 6. The dust lip 4 is installed on the inner side of the oil seal body 1, and the inner ring groove 6 is opened below the dust lip 4. A quick release hole 15 is opened on the upper surface of the oil seal body 1, and a quick release rod 2 is provided above the oil seal body 1.

[0024] The quick release lever 2 has a piercing portion 10 at its lower end, with a plurality of through holes 11 formed around the piercing portion 10. An external thread 9 is formed above the piercing portion 10. A rocker 3 is mounted on one side of the quick release lever 2. The interior of the quick release lever 2 is a hollow structure, which is connected to the through holes 11.

[0025] An inner thread groove is provided on the inner wall of the quick-release hole 15 , a bottom hole 12 is opened at the lower part of the quick-release hole 15 , a closing membrane 13 is installed in the middle of the bottom hole 12 , an expansion elastic body 8 is installed in the inner ring groove 6 , and the bottom hole 12 is connected to the interior of the expansion elastic body 8 .

[0026] A spring lip 14 is installed below the oil seal body 1 , a coil spring 7 is installed above the spring lip 14 , and a rubber sealing body is provided inside the oil seal body 1 .

[0027] A reinforcement skeleton 5 is installed on the inner wall of the oil seal body 1, and the expansion elastic body 8 is made of nitrile rubber.

[0028] The diameter of the quick release rod 2 is smaller than the diameter of the quick release hole 15 , and both the quick release rod 2 and the rocker 3 are made of stainless steel.

[0029] The outer wall of the reinforcing frame 5 is embedded in the oil seal body 1 , and the piercing portion 10 is a conical structure.

[0030] The diameter of the bottom hole 12 is smaller than the diameter of the piercing portion 10 .

[0031] See also Figures 1 to 5 As an embodiment of the present invention: when the oil seal body 1 needs to be disassembled, the quick release rod 2 can be picked up to make the piercing portion 10 penetrate the quick release hole 15 to pierce the closing membrane 13 and extend into the bottom hole 12. At the same time, the quick release rod 2 can be driven to rotate by the rocker 3 to make the external thread 9 and the internal thread groove rotate and connect, thereby realizing the connection between the quick release rod 2 and the quick release hole 15. Then, the quick release rod 2 can be used to transmit gas or liquid into the through hole 11, so that it enters the expansion elastic body 8 through the through hole 11 and expands inside the oil seal body 1. The pressure generated by the expansion of the expansion elastic body 8 can effectively make the oil seal body 1 The connection between the body 1 and the installation part is loose. After the oil seal body 1 is loosened, the quick release rod 2 can be pulled upward. Since the quick release rod 2 is rotatably connected to the quick release hole 15 through a thread, the oil seal body 1 can be driven to move upward, thereby facilitating the rapid disassembly of the oil seal body 1. The operation is simple and labor-saving, and the disassembly difficulty is reduced, which can greatly shorten the disassembly time and will not cause damage to surrounding components during the disassembly process. The design of the sealing membrane 13 can prevent the lubricating oil at the installation position of the oil seal body 1 from easily entering the expansion elastic body 8 through the bottom hole 12 under normal use.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A skeleton oil seal, comprising: An oil seal body (1), a dust lip (4) and an inner ring groove (6), wherein the dust lip (4) is installed on the inner side of the oil seal body (1), and an inner ring groove (6) is provided below the dust lip (4). The oil seal body (1) is characterized in that a quick release hole (15) is provided on the upper surface of the oil seal body (1), and a quick release rod (2) is provided above the oil seal body (1); The lower end of the quick-release rod (2) is provided with a piercing portion (10), a plurality of through holes (11) are formed around the piercing portion (10), an external thread (9) is provided above the piercing portion (10), a rocker (3) is installed on one side above the quick-release rod (2), the interior of the quick-release rod (2) is a hollow structure, and the interior of the quick-release rod (2) is communicated with the through holes (11); An inner thread groove is provided on the inner wall of the quick-release hole (15), a bottom hole (12) is opened at the lower part of the quick-release hole (15), a closing membrane (13) is installed in the middle of the bottom hole (12), an expansion elastic body (8) is installed in the inner ring groove (6), and the bottom hole (12) is communicated with the inside of the expansion elastic body (8).

2. A skeleton oil seal according to claim 1, characterized in that: A spring lip (14) is installed below the oil seal body (1), a coil spring (7) is installed above the spring lip (14), and a rubber sealing body is provided inside the oil seal body (1).

3. The skeleton type oil seal according to claim 1, characterized in that: A reinforcing skeleton (5) is installed on the inner wall of the oil seal body (1), and the expansion elastic body (8) is made of nitrile rubber.

4. The skeleton type oil seal according to claim 1, characterized in that: The diameter length of the quick-release rod (2) is smaller than the diameter length of the quick-release hole (15), and both the quick-release rod (2) and the rocker (3) are made of stainless steel.

5. The skeleton type oil seal according to claim 3, characterized in that: The outer wall of the reinforcing skeleton (5) is embedded in the oil seal body (1), and the piercing portion (10) is a conical structure.

6. The skeleton type oil seal according to claim 1, characterized in that: The diameter length of the bottom hole (12) is smaller than the diameter length of the piercing portion (10).

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