Novel oil seal

Abstract

The utility model belongs to the technical field of framework oil seals, and particularly relates to a novel oil seal which comprises an oil seal body, an installation groove is formed in the inner side wall of the oil seal body, a fastening spring is connected to the inner wall of the installation groove in a clamped mode, an anti-falling mechanism is installed on the inner side wall of the oil seal body, and the anti-falling mechanism comprises a gravity pipe. The lower end surface of the gravity pipe is fixedly connected with a supporting air bag. According to the novel oil seal, the anti-falling mechanism is installed in the framework oil seal, a supporting air bag and a gravity pipe in the anti-falling mechanism are vertically distributed, and the supporting air bag is inserted into a fastening spring, so that when the fastening spring falls downwards, the supporting air bag is driven to move downwards together, and an extrusion block is driven by the gravity pipe to extrude an air storage bag; and after the supporting air bag is inflated, expands and extends, falling of the fastening spring is limited, then accidental falling of the fastening spring is avoided, and the service life of the oil seal framework is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of skeleton oil seal technology, and in particular to a novel oil seal. Background Technology

[0002] When in use, the oil seal is mainly tightened by the contraction and return of the retaining spring, which compresses the inner wall surface of the oil seal against the object to achieve a seal. However, most retaining springs are ring-shaped structures with smooth surfaces, and they are often exposed to substances such as lubricating oil in the environment. This makes it easy for the retaining spring to fall off the surface of the oil seal due to its own compressive force. This not only reduces the sealing effect of the oil seal, but may also cause the oil seal or retaining spring components to enter the equipment and cause damage. Utility Model Content

[0003] To address the lack of technical measures to prevent the fastening spring from falling off in existing skeleton oil seals, this invention proposes a novel oil seal.

[0004] This utility model proposes a novel oil seal, comprising an oil seal body, an installation groove formed on the inner side wall of the oil seal body, a fastening spring engaged on the inner wall of the installation groove, and an anti-detachment mechanism installed on the inner side wall of the oil seal body. The anti-detachment mechanism includes a gravity tube, a support airbag fixedly connected to the lower end surface of the gravity tube, the interior of the support airbag communicating with the interior of the gravity tube, and the support airbag located inside the fastening spring.

[0005] Preferably, a hinge seat is fixedly connected to the inner wall surface of the oil seal body, and a plurality of hinge seats are arranged in a ring array with the axis of the oil seal body as the array center on the inner side of the oil seal body, and a pressing block is hinged to the surface of the hinge seat through a rotating shaft.

[0006] The above technical solution utilizes a hinged seat to movably install the extrusion block, thereby facilitating the deflection of the extrusion block on the surface of the hinged seat.

[0007] Preferably, the upper surface of the gravity tube is fixedly inserted into the surface of the extrusion block, and an air storage ring is fixedly connected to the inner wall surface of the oil seal body. The air storage ring is circular.

[0008] The above technical solution utilizes the deflection of the extrusion block above the gas storage ring, which facilitates the extrusion block surface to extrude the gas storage ring surface when it deflects downward.

[0009] Preferably, the material of the gas storage ring and the material of the supporting airbag are both fluororubber, and the material of the gravity tube and the extrusion block are both carbon steel.

[0010] The above technical solution utilizes a gravity tube made of rigid material, which facilitates the gravity tube to drive the support airbag into the fastening spring, while avoiding the compression of the fastening spring that hinders airflow within the gravity tube. Furthermore, the airbag and gravity tube structure can be made of suitable materials according to the actual application environment, and the inner wall thickness of the support airbag can be set to be less than the inner wall thickness of the air storage ring. This facilitates the inflation and expansion of the support airbag while preventing the surface of the air storage ring from expanding outward.

[0011] Preferably, a connecting pipe is fixedly inserted into the surface of the gas storage ring, the upper end of the connecting pipe is fixedly inserted into the lower end of the extrusion block, and the interior of the gas storage ring is connected to the interior of the gravity tube through the connecting pipe.

[0012] The above technical solution connects the interior of the air storage ring with the interior of the gravity pipe through a connecting pipe, thereby facilitating the flow of air from the air storage ring into the support airbag through the gravity pipe.

[0013] Preferably, a metal frame is fixedly connected inside the oil seal body.

[0014] The above technical solution utilizes a metal skeleton to support the oil seal, thereby facilitating structural support for the oil seal body.

[0015] The beneficial effects of this utility model are as follows:

[0016] By installing an anti-detachment mechanism inside the oil seal skeleton, the support airbag in the anti-detachment mechanism is vertically distributed with the gravity tube and inserted into the fastening spring. When the fastening spring falls downward, it pulls the support airbag downward as well. The gravity tube then drives the compression block to compress the air reservoir, which in turn inflates the support airbag. After the support airbag inflates and expands, it restricts the fall of the fastening spring, thereby preventing the fastening spring from accidentally falling off and increasing the service life of the oil seal skeleton. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a novel oil seal proposed in this utility model;

[0018] Figure 2 This is a cross-sectional view of the main structure of a novel oil seal proposed in this utility model;

[0019] Figure 3 This is a three-dimensional view of the gravity tube structure of a novel oil seal proposed in this utility model.

[0020] In the diagram: 1. Oil seal body; 2. Fastening spring; 3. Gravity tube; 31. Support airbag; 32. Hinge seat; 33. Extrusion block; 34. Air storage ring; 35. Connecting pipe; 4. Metal frame. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figures 1-3 A novel oil seal includes an oil seal body 1. An installation groove is provided on the inner side wall of the oil seal body 1. A fastening spring 2 is snapped into the inner wall of the installation groove. An anti-dropping mechanism is installed on the inner side wall of the oil seal body 1. The anti-dropping mechanism includes a gravity tube 3. A support airbag 31 is fixedly connected to the lower end surface of the gravity tube 3. The interior of the support airbag 31 is connected to the interior of the gravity tube 3. The support airbag 31 is located inside the fastening spring 2.

[0023] To inflate the support airbag 31, a hinge seat 32 is fixedly connected to the inner wall surface of the oil seal body 1. Multiple hinge seats 32 are arranged in a ring array with the axis of the oil seal body 1 as the array center on the inner side of the oil seal body 1. A compression block 33 is hinged to the surface of the hinge seat 32 through a rotating shaft. The compression block 33 is movably installed using the hinge seat 32, so that the compression block 33 can deflect on the surface of the hinge seat 32. The upper end surface of the gravity tube 3 is fixedly inserted into the surface of the compression block 33. An air storage ring 34 is fixedly connected to the inner wall surface of the oil seal body 1. The air storage ring 34 is circular. The compression block 33 deflects above the air storage ring 34, so that when the compression block 33 deflects downward, the surface of the compression block 33 can compress the surface of the air storage ring 34.

[0024] To ensure proper airflow within the support airbag 31, both the air storage ring 34 and the support airbag 31 are made of fluororubber, while the gravity tube 3 and the compression block 33 are made of carbon steel. The gravity tube 3 is made of a rigid material, which facilitates the gravity tube 3 in driving the support airbag 31 into the fastening spring 2, while preventing the fastening spring 2 from obstructing airflow within the gravity tube 3. Furthermore, depending on the actual application environment, suitable materials can be used to fabricate the airbag and gravity tube 3 structure, and the inner wall thickness of the support airbag 31 can be minimized. The thickness of the inner wall of the air storage ring 34 facilitates the inflation and expansion of the airbag 31 while preventing the surface of the air storage ring 34 from expanding outward. A connecting pipe 35 is fixedly inserted into the surface of the air storage ring 34. The upper end of the connecting pipe 35 is fixedly inserted into the lower end of the extrusion block 33. The interior of the air storage ring 34 is connected to the interior of the gravity tube 3 through the connecting pipe 35. The connecting pipe 35 connects the interior of the air storage ring 34 to the interior of the gravity tube 3, thereby facilitating the flow of air from the air storage ring 34 into the supporting airbag 31 through the gravity tube 3.

[0025] By installing an anti-detachment mechanism inside the oil seal skeleton, the support airbag 31 in the anti-detachment mechanism is vertically distributed with the gravity tube 3 and inserted into the fastening spring 2. When the fastening spring 2 falls downward, it drives the support airbag 31 downward as well. The gravity tube 3 drives the compression block 33 to compress the air storage bag, which in turn inflates the support airbag 31. After the support airbag 31 inflates and expands, it restricts the fall of the fastening spring 2, thereby preventing the fastening spring 2 from falling off accidentally and increasing the service life of the oil seal skeleton.

[0026] A metal frame 4 is fixedly connected inside the oil seal body 1. The metal frame 4 supports the oil seal, thereby facilitating structural support for the oil seal body 1.

[0027] Working principle:

[0028] When in use, the fastening spring 2 is inserted into the mounting groove. The outer end of the fastening spring 2 is stretched to create a gap. Under the action of gravity, the end of the gravity tube 3 drives the support airbag 31 to extend into the interior of the fastening spring 2.

[0029] When the fastening spring 2 falls downward, the surface of the fastening spring 2 causes the support airbag 31 to fall together. The support airbag 31 drives the compression block 33 to deflect downward through the gravity tube 3. While the compression block 33 deflects, it compresses the air storage ring 34. After the air storage ring 34 is compressed, the air inside it is inflated into the support airbag 31 through the connecting tube 35 and the gravity tube 3. The support airbag 31 inflates and expands, and from the inside of the fastening spring 2, it obstructs the falling of the fastening spring 2.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel oil seal, comprising an oil seal body (1), wherein an installation groove is formed on the inner sidewall of the oil seal body (1), and a fastening spring (2) is engaged with the inner wall of the installation groove, characterized in that: The inner wall of the oil seal body (1) is equipped with an anti-drop mechanism, which includes a gravity tube (3). A support airbag (31) is fixedly connected to the lower end surface of the gravity tube (3). The interior of the support airbag (31) is connected to the interior of the gravity tube (3). The support airbag (31) is located inside the fastening spring (2).

2. The novel oil seal according to claim 1, characterized in that: The inner wall surface of the oil seal body (1) is fixedly connected to a hinge seat (32). Multiple hinge seats (32) are arranged in a ring array on the inner side of the oil seal body (1) with the axis of the oil seal body (1) as the array center. The surface of the hinge seat (32) is hinged to a pressing block (33) through a rotating shaft.

3. The novel oil seal according to claim 2, characterized in that: The upper surface of the gravity tube (3) is fixedly inserted into the surface of the extrusion block (33), and an air storage ring (34) is fixedly connected to the inner wall surface of the oil seal body (1). The air storage ring (34) is circular.

4. The novel oil seal according to claim 3, characterized in that: The gas storage ring (34) and the supporting airbag (31) are both made of fluororubber, while the gravity tube (3) and the extrusion block (33) are both made of carbon steel.

5. A novel oil seal according to claim 4, characterized in that: A connecting pipe (35) is fixedly inserted into the surface of the gas storage ring (34). The upper end of the connecting pipe (35) is fixedly inserted into the lower end of the extrusion block (33). The interior of the gas storage ring (34) is connected to the interior of the gravity tube (3) through the connecting pipe (35).

6. The novel oil seal according to claim 1, characterized in that: The oil seal body (1) is internally fixedly connected to a metal frame (4).

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