Oil seal with good dustproof performance

Abstract

The utility model relates to the technical field of oil seals, and discloses an oil seal with good dustproof performance, which adopts an overflow expansion matched elastic sheet supporting type tensioning sealing structure, arc-shaped grooves are arranged on two sides of an oil seal main body, and arc-shaped elastic sheets are uniformly embedded in the arc-shaped grooves. The arc-shaped elastic pieces are evenly embedded in the inner side of the arc-shaped groove in a circumferential mode, in the working process, expansion force applied to the arc-shaped groove through oil overflow is matched with expansion supporting of the arc-shaped elastic pieces, it can be ensured that the inner side and the outer side of the oil seal body make stable contact with a mechanical part, and the sealing effect of the oil seal can be effectively improved through expansion sealing; compared with a traditional elastic attaching sealing structure, the oil seal has better structural sealing performance and working stability, the dustproof side cover is arranged on the outer side of the oil seal body, the dustproof side cover is made of hard materials and installed in the mode that the notch is embedded into the arc-shaped groove in the outer side in an embedded mode, external dust and dirt can be effectively prevented from entering the oil seal through lateral sealing, and the service life of the oil seal is prolonged. The dustproof and anti-pollution protection performance of the oil seal can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of oil seal technology, specifically to an oil seal with good dustproof performance. Background Technology

[0002] Oil seals are mechanical components that seal oil in transmission parts. Most oil seals are made of elastic materials. They isolate the lubricated parts from the output parts in the transmission system, preventing lubricating oil from overflowing or leaking from the cavity. They are important isolation and protection components in mechanical transmission structures. With the rapid development of various technologies, the application of oil seals is becoming more and more widespread.

[0003] Oil seals are mostly installed on the upper part of the shaft of transmission components. During operation, they rely on the sealing effect of the oil seal to isolate and protect the oil on the shaft end. During operation, the tightness of the fit between the oil seal and the shaft directly affects the sealing effect of the oil seal. Existing oil seals mostly rely on their own elastic fit to achieve sealing, which has poor sealing effect and is affected by material aging. Their sealing performance will be greatly reduced in the later stage, resulting in poor working stability. Therefore, an oil seal with good dustproof performance is proposed. Utility Model Content

[0004] The purpose of this invention is to provide an oil seal with good dustproof performance to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an oil seal with good dustproof performance, comprising an oil seal body, a dustproof side cover, a protective ring seat, and an arc-shaped spring piece. The front and rear sides of the oil seal body are provided with arc-shaped grooves, the inner side of the arc-shaped grooves is rounded, and the dustproof side cover and the protective ring seat are respectively fitted into the inner side of the arc-shaped grooves on both sides.

[0006] The arc-shaped spring is arc-shaped, and there are multiple arc-shaped springs. Several arc-shaped springs are uniformly embedded in the inner side of the arc-shaped groove in a circumferential shape.

[0007] Preferably, the oil seal body is arranged in a ring shape, and an installation sleeve is provided through the middle of the oil seal body.

[0008] Preferably, the inner side of the aforementioned arc-shaped groove is uniformly provided with a spring plate mounting groove in a circumferential shape. The spring plate mounting groove is adapted to the arc-shaped spring plate, and the arc-shaped spring plate is fixedly fitted and snapped onto the inner side of the spring plate mounting groove.

[0009] Preferably, the dustproof cover is a ring-shaped piece, and a positioning hole is provided in the middle of the dustproof cover. After installation, the dustproof cover fits into the inner side of the arc-shaped groove on the front side.

[0010] Preferably, the dustproof side cover is provided with fitting grooves on both the inner and outer circumferences, and a fitting protrusion is provided on the inner side of the arc-shaped groove. After installation, the fitting protrusion and the fitting groove are fitted and snapped together.

[0011] Preferably, the protective ring seat is a ring-shaped seat with an arc-shaped protrusion at the front. After installation, the protective ring seat fits into the inner side of the arc-shaped groove on the rear side.

[0012] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0013] This oil seal adopts an overflow expansion combined with spring support tension sealing structure. Arc-shaped grooves are provided on both sides of the oil seal body, and arc-shaped springs are evenly fitted inside the grooves. During operation, the expansion force applied to the arc-shaped grooves by the overflowing oil, combined with the expansion support of the arc-shaped springs, ensures stable contact between the inner and outer sides of the oil seal body and the mechanical parts. The expansion sealing effectively improves the sealing effect of the oil seal. Compared with traditional elastic fitting sealing structures, it has better structural sealing and operational stability. Furthermore, a dustproof cover is provided on the outer side of the oil seal body. The dustproof cover is made of rigid material and is installed by fitting into the outer arc-shaped groove through a slot. This lateral sealing effectively prevents the entry of external dust and dirt, effectively improving the dustproof and anti-fouling protection of the oil seal. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall disassembled front structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the overall disassembled structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the oil seal body of this utility model.

[0019] Figure 5 For the present utility model Figure 4 Schematic diagram of the structure of region A in the middle.

[0020] Explanation of reference numerals in the attached drawings: 1. Oil seal body; 2. Dustproof side cover; 3. Protective ring seat; 4. Arc-shaped spring; 5. Fitting protrusion; 6. Fitting groove. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0023] Example

[0024] Please see Figure 1-5 This utility model provides a technical solution: an oil seal with good dustproof performance, comprising an oil seal body 1, a dustproof side cover 2, a protective ring seat 3, and an arc-shaped spring 4, as shown in the attached figure. Figure 1 As shown, the oil seal body 1 is made of composite rubber and is ring-shaped. To facilitate connection and installation with the transmission shaft, an installation sleeve is provided through the middle of the oil seal body 1.

[0025] To improve leak protection, as shown in the attached document. Figure 2 As shown, arc-shaped grooves are provided on both the front and rear sides of the oil seal body 1. The inner side of the arc-shaped grooves is rounded. When subjected to oil pressure, the expansion of the arc-shaped grooves can improve the tightness of contact between the sides of the oil seal body 1 and the mechanical parts. To further improve the sealing stability of the oil seal body 1, arc-shaped spring pieces 4 are provided on the inner side of the arc-shaped grooves. The arc-shaped spring pieces 4 are arc-shaped stainless steel spring pieces, and multiple arc-shaped spring pieces 4 are provided. Several arc-shaped spring pieces 4 are evenly embedded in the inner side of the arc-shaped grooves in a circumferential shape. To facilitate the connection and installation of the arc-shaped spring pieces 4, see attached... Figure 5As shown, the inner side of the arc-shaped groove is uniformly provided with spring plate mounting slots in a circumferential shape. The spring plate mounting slots are adapted to the arc-shaped spring plate 4. After installation, the deformation elastic force of the arc-shaped spring plate 4 enables it to be supported and locked in the inner side of the spring plate mounting slot. While ensuring stable installation, the arc-shaped spring plate 4 can provide stable expansion support force to the inner and outer support sides of the oil seal body 1. The overflow expansion combined with spring plate support tension sealing structure is adopted. Arc-shaped grooves are provided on both sides of the oil seal body 1, and arc-shaped spring plates 4 are uniformly embedded in the inside of the arc-shaped grooves. During operation, the expansion force applied to the arc-shaped grooves by the overflow of oil, combined with the expansion support of the arc-shaped spring plate 4, can ensure stable contact between the inner and outer sides of the oil seal body 1 and the mechanical parts. The expansion and closure can effectively improve the sealing effect of the oil seal. Compared with the traditional elastic fitting sealing structure, it has better structural sealing and working stability.

[0026] The dustproof side cover 2 and the protective ring seat 3 are respectively fitted into the inner side of the arc-shaped grooves on both sides, as shown in the attached figure. Figure 2 As shown, the dustproof cover 2 is a ring-shaped piece and a rigid end cap. To facilitate the installation and positioning of the dustproof cover 2, a positioning sleeve hole is provided in the middle of the dustproof cover 2. After installation, the dustproof cover 2 is fitted into the inner side of the arc-shaped groove on the front side. The dustproof cover 2 is made of rigid material and is fitted into the outer arc-shaped groove through the groove. The lateral sealing can effectively prevent the entry of external dust and dirt, and can effectively improve the dustproof and dirt-resistant protection of the oil seal. In order to improve the installation stability of the dustproof cover 2, fitting grooves 6 are provided on both the inner and outer circumferences of the dustproof cover 2. Fitting protrusions 5 are provided on the inner side of the arc-shaped groove. After installation, the fitting protrusions 5 and the fitting grooves 6 are fitted and snapped together.

[0027] As attached Figure 3 As shown, the protective ring seat 3 is a ring-shaped setting and is made of soft rubber. In order to align and install with the arc-shaped groove, an arc-shaped protrusion is provided at the front of the protective ring seat 3. After installation, the protective ring seat 3 fits into the inner side of the arc-shaped groove on the rear side, which can shield and protect the arc-shaped spring piece 4 in the arc-shaped groove on the inner side.

[0028] In terms of working principle or structural principle, during use, the protective ring seat 3 is fitted into the inner side of the arc-shaped groove at the rear of the oil seal body 1. Then, the oil seal body 1 is aligned and fitted onto the upper part of the transmission shaft. After that, the oil seal body 1 is installed in place by pushing. After completion, the dust cover 2 is fitted into the inner side of the arc-shaped groove at the front of the oil seal body 1 to complete the installation of the oil seal. During operation, the expansion force applied to the arc-shaped groove by the oil overflow, combined with the expansion and pushing force applied by the expansion support of the arc-shaped spring piece 4, can ensure stable contact between the inner and outer sides of the oil seal body 1 and the mechanical parts, and prevent oil overflow and leakage.

[0029] In summary, this oil seal adopts an overflow expansion combined with spring support tension sealing structure. Arc-shaped grooves are provided on both sides of the oil seal body 1, and arc-shaped springs 4 are evenly fitted inside the grooves. During operation, the expansion force applied to the arc-shaped grooves by the overflowing oil, combined with the expansion support of the arc-shaped springs 4, ensures stable contact between the inner and outer sides of the oil seal body 1 and the mechanical components. The expansion sealing effectively improves the sealing effect of the oil seal. Compared with traditional elastic fitting sealing structures, it has better structural sealing and operational stability. Furthermore, a dustproof cover 2 is provided on the outer side of the oil seal body 1. The dustproof cover 2 is made of rigid material and is installed by fitting into the outer arc-shaped groove through a slot. This lateral sealing effectively prevents the entry of external dust and dirt, effectively improving the dustproof and anti-fouling protection of the oil seal.

[0030] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. An oil seal with good dustproof performance, comprising an oil seal body (1), a dustproof side cover (2), a protective ring seat (3), and an arc-shaped spring piece (4), characterized in that: The front and rear sides of the oil seal body (1) are provided with arc-shaped grooves, the inner side of the arc-shaped grooves is rounded, and the dustproof side cover (2) and the protective ring seat (3) are respectively fitted into the inner side of the arc-shaped grooves on both sides. The arc-shaped spring (4) is arc-shaped, and there are multiple arc-shaped springs (4). Several arc-shaped springs (4) are uniformly embedded in the inner side of the arc-shaped groove in a circular shape.

2. The oil seal with good dustproof performance according to claim 1, characterized in that: The oil seal body (1) is arranged in a ring shape, and an installation sleeve is provided through the middle of the oil seal body (1).

3. The oil seal with good dustproof performance according to claim 2, characterized in that: The inner side of the arc-shaped groove is uniformly provided with spring plate mounting slots in a circular shape. The spring plate mounting slots are adapted to the arc-shaped spring plate (4). The arc-shaped spring plate (4) is fixedly fitted and snapped onto the inner side of the spring plate mounting slot.

4. The oil seal with good dustproof performance according to claim 1, characterized in that: The dustproof side cover (2) is a ring-shaped piece, and a positioning sleeve hole is provided in the middle of the dustproof side cover (2). After installation, the dustproof side cover (2) is fitted into the inner side of the arc-shaped groove on the front side.

5. The oil seal with good dustproof performance according to claim 4, characterized in that: The dustproof side cover (2) is provided with fitting grooves (6) on both the inner and outer circumferences. The inner side of the arc-shaped groove is provided with a fitting protrusion (5). After installation, the fitting protrusion (5) and the fitting groove (6) are fitted and snapped together.

6. The oil seal with good dustproof performance according to claim 1, characterized in that: The protective ring seat (3) is arranged in a ring shape. The front part of the protective ring seat (3) is provided with an arc-shaped protrusion. After installation, the protective ring seat (3) is fitted into the inner side of the arc-shaped groove on the rear side.

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