Novel framework oil seal with dustproof function

Abstract

The utility model discloses a novel framework oil seal with a dustproof function. The novel framework oil seal comprises a cylinder body, a rectangular groove is formed in the left end of the cylinder body, a first sealing piece is arranged on the left side wall of the rectangular groove, a second sealing piece is arranged on the right side wall of the rectangular groove, the first sealing piece is tightly connected with the inner side end of the second sealing piece, a pressing plate is arranged at the left end of the cylinder body, and a piston rod is arranged at the lower end of the cylinder body. The lower end of the first sealing piece and the lower end of the second sealing piece are both tightly connected with the upper surface of the piston rod, extension springs are arranged at the outer side ends of the lower sides of the first sealing piece and the second sealing piece respectively, a metal framework is arranged in a rectangular groove formed by the upper ends of the first sealing piece and the second sealing piece, and the first sealing piece and the second sealing piece are the same in size and shape. When the novel framework oil seal with the dustproof function is used for sealing, the two sealing pieces are mounted back to back, so that the sealing structure is better, and dust and impurities can be effectively prevented from entering the novel framework oil seal.

Description

Technical Field

[0001] The utility model relates to the technical field of new skeleton oil seals with dust-proof functions, and specifically relates to a new skeleton oil seal with a dust-proof function. Background Technique

[0002] The skeleton oil seal is a typical representative of oil seals. Generally speaking, the oil seal refers to the skeleton oil seal. The function of the oil seal is generally to isolate the lubricated parts in the transmission parts from the output parts, so as to prevent the lubricating oil from leaking. The skeleton is like the steel bars in concrete components, playing a strengthening role and enabling the oil seal to maintain its shape and tension. According to the structural form, it can be divided into single-lip skeleton oil seals and double-lip skeleton oil seals. The secondary lip of the double-lip skeleton oil seal plays a dust-proof role, preventing external dust, impurities, etc. from entering the machine. According to the skeleton type, it can be divided into inner-packing skeleton oil seals, exposed-skeleton oil seals and assembled oil seals. According to the working conditions, it can be divided into rotary skeleton oil seals and reciprocating skeleton oil seals. It is widely used in parts such as the crankshaft of gasoline engines, the crankshaft of diesel engines, gearboxes, differentials, shock absorbers, engines, axles, etc.;

[0003] The existing skeleton oil seals and dust-proof rings are usually separated as two components in different grooves;

[0004] For the traditional part of the skeleton oil seal, when sealing, the two components are separated in different grooves, and its sealing performance is poor. Dust and impurities are easy to enter, causing the entire system to be polluted. For this reason, we propose a new skeleton oil seal with a dust-proof function. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a new skeleton oil seal with a dust-proof function. When sealing, by installing two sealing pieces back to back, the sealing structure is better, which can effectively prevent the entry of dust and impurities and ensure that the entire system is not polluted. The problems in the background technique can be effectively solved.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: A new skeleton oil seal with a dust-proof function, including a cylinder block;

[0007] Cylinder block: A rectangular groove is opened at its left end. A first sealing piece is provided on the left side wall of the rectangular groove, and a second sealing piece is provided on the right side wall of the rectangular groove. The inner ends of the first sealing piece and the second sealing piece are closely connected. When sealing, by installing two sealing pieces back to back, the sealing structure is better, which can effectively prevent the entry of dust and impurities.

[0008] Furthermore, a pressing plate is provided at the left end of the cylinder block for easy positioning.

[0009] Further, a piston rod is provided at the lower end of the cylinder block. The lower ends of the first sealing piece and the second sealing piece are both tightly connected to the upper surface of the piston rod, facilitating sealing.

[0010] Further, tension springs are respectively provided at the outer ends of the lower sides of the first sealing piece and the second sealing piece to provide a pressing force.

[0011] Further, a metal skeleton is provided inside the rectangular groove formed by the upper ends between the first sealing piece and the second sealing piece, facilitating expansion and top pressing.

[0012] Further, the first sealing piece and the second sealing piece are of the same size and shape, and the first sealing piece and the second sealing piece are symmetrical to each other, facilitating sealing.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The novel skeleton oil seal with dust-proof function has the following advantages:

[0014] The first sealing piece and the second sealing piece are installed "back to back" at the left end of the cylinder block and are connected and tightened through the metal skeleton in the middle, so that the first sealing piece and the second sealing piece expand outwards for top pressing. Before installation, a special metal-rubber glue is applied to the surface of the metal skeleton to ensure the stability after installation. A rectangular groove space is formed by pressing the pressing plate to further position the first sealing piece and the second sealing piece. By installing the two sealing pieces back to back, the sealing structure is better, and dust and impurities can be effectively prevented from entering. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a schematic cross-sectional structural diagram of the present utility model;

[0017] Figure 3 is a schematic connection structural diagram of the first sealing piece and the second sealing piece of the present utility model.

[0018] In the figure: 1 pressing plate, 2 cylinder block, 3 piston rod, 4 tension spring, 5 first sealing piece, 6 metal skeleton, 7 second sealing piece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-3, this embodiment provides a technical solution: a new type of skeleton oil seal with dust-proof function, including a cylinder block 2;

[0021] Cylinder block 2: A rectangular groove is opened at its left end. A first sealing piece 5 is provided on the left side wall of the rectangular groove, and a second sealing piece 7 is provided on the right side wall of the rectangular groove. The inner ends of the first sealing piece 5 and the second sealing piece 7 are closely connected. A pressing plate 1 is provided at the left end of the cylinder block 2. A piston rod 3 is provided at the lower end of the cylinder block 2. The lower ends of the first sealing piece 5 and the second sealing piece 7 are both closely connected to the upper surface of the piston rod 3. Tensile springs 4 are respectively provided at the outer lower ends of the first sealing piece 5 and the second sealing piece 7. A metal skeleton 6 is provided inside the rectangular groove formed by the upper ends between the first sealing piece 5 and the second sealing piece 7. The first sealing piece 5 and the second sealing piece 7 are of the same size and shape and are symmetrical to each other.

[0022] The working principle of the new type of skeleton oil seal with dust-proof function provided by the present utility model is as follows: When sealing, the first sealing piece 5 and the second sealing piece 7 are installed "back to back" in the rectangular groove at the left end of the cylinder block 2. The first sealing piece 5 and the second sealing piece 7 are connected and tightened through the intermediate metal skeleton 6. Before installation, a special metal-rubber glue is applied to the surface of the metal skeleton 6 to ensure the stability after installation, so that the first sealing piece 5 and the second sealing piece 7 expand outward and are tightened. After the first sealing piece 5 and the second sealing piece 7 are installed, they press the pressing plate 1 to form a rectangular groove space, and at the same time, the first sealing piece 5 and the second sealing piece 7 are further positioned. The side close to the oil can seal the oil medium, while the side close to the atmosphere can prevent dust and impurities from entering, ensuring that the entire system is not polluted.

[0023] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A new skeleton oil seal with dustproof function, characterized by: comprising a cylinder body (2); The cylinder body (2) has a rectangular groove at its left end, a sealing sheet 1 (5) is provided on the left wall of the rectangular groove, and a sealing sheet 2 (7) is provided on the right wall of the rectangular groove. The inner ends of the sealing sheet 1 (5) and the sealing sheet 2 (7) are tightly connected.

2. A novel skeleton oil seal with dustproof function according to claim 1, characterized in that: A pressure plate (1) is provided at the left end of the cylinder body (2).

3. The novel skeleton oil seal with dustproof function according to claim 1 is characterized in that: The lower end of the cylinder body (2) is provided with a piston rod (3), and the lower ends of the first sealing piece (5) and the second sealing piece (7) are tightly connected to the upper surface of the piston rod (3).

4. The novel skeleton oil seal with dustproof function according to claim 1 is characterized in that: Tension springs (4) are respectively provided at the lower outer ends of the sealing sheet 1 (5) and the sealing sheet 2 (7).

5. The novel skeleton oil seal with dustproof function according to claim 1 is characterized in that: A metal frame (6) is provided inside the rectangular groove formed by the upper ends of the sealing sheet 1 (5) and the sealing sheet 2 (7).

6. The novel skeleton oil seal with dustproof function according to claim 1 is characterized in that: The sealing sheet 1 (5) and the sealing sheet 2 (7) are of the same size and shape, and the sealing sheet 1 (5) and the sealing sheet 2 (7) are symmetrical.

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