Internal and external dustproof oil seal structure

Abstract

The utility model relates to the technical field of oil seal structures, and provides an internal and external dustproof oil seal structure, which comprises a shaft body and a first base, and is provided with a dustproof structure, and a clamping groove in a sealing ring and clamping blocks on the first base and a second base form a clamping structure respectively, so that the sealing ring can be prevented from being damaged. The sealing ring is arranged in the groove, then the sealing ring is installed in the groove, the strength of the sealing ring is effectively enhanced, the situation of distortion caused by excessive pressure bearing is avoided, the dustproof part is arranged, one side of the dustproof part is arranged to be an inclined face, and then the two ends of the shaft body are effectively sealed and dustproof. And the annular spring is arranged on one side of the oil-proof part, then the elastic force effect is exerted on the oil-proof part, the sealing effect of the oil-proof part is improved, and then the oil-proof effect of the oil seal structure is effectively improved in cooperation with the oil blocking part.

Description

Technical Field

[0001] The utility model relates to the technical field of oil seal structures, in particular to an internal and external dustproof oil seal structure. Background Art

[0002] Oil seals typically consist of a seal body, a reinforcement frame, and a self-tightening coil spring. They are primarily used to prevent the leakage of lubricating oil and the intrusion of contaminants during mechanical operation. Oil seals, as a crucial mechanical component, primarily act as lip seals on rotating shafts. Their unique structural design maintains proper lubrication and prevents the intrusion of contaminants. An internal / external dustproof oil seal is a mechanical component primarily used to prevent lubricating oil leakage and contaminant intrusion. Its design aims to maintain the traditional oil seal function while also providing additional dust protection.

[0003] The existing oil seal structure is not easy to protect against dust during use, which causes dust to enter the oil seal structure along with the shaft, weakening the sealing performance, resulting in poor oil seal effect and oil leakage. Utility Model Content

[0004] The utility model aims to provide an internal and external dustproof oil seal structure to solve the defect that the existing oil seal structure is not convenient for dustproofing.

[0005] In order to solve the above technical problems, the present utility model provides the following technical solutions: an internal and external dustproof oil seal structure, comprising a shaft and a first base;

[0006] The shaft body includes a first base, a second base, a dustproof structure and an oil retaining structure, wherein the first base is arranged on the outside of the shaft body, and the second base is arranged at the bottom end of the first base on the outside of the shaft body;

[0007] The first base and the second base are both provided with dust-proof structures;

[0008] An oil blocking structure is provided at the bottom end of the first base and the top end of the second base.

[0009] Preferably, the dustproof structure includes a groove, a sealing ring, a dustproof part, an oilproof part, a spring groove, an annular spring, a clamping groove, a clamping block and an oil-blocking part. The grooves are all arranged inside the first base and the second base, the inside of the groove is provided with a sealing ring, the outside of the shaft at the top end of the sealing ring is provided with a dustproof part, the bottom end of the sealing ring inside the groove is provided with an oil-blocking part, a spring groove is provided on one side of the oil-blocking part, an annular spring is provided inside the spring groove, a clamping groove is provided inside the top end of the sealing ring, a clamping block is fixed on one side of the groove outside the clamping groove, and the bottom end of the groove is provided with an oil-blocking part.

[0010] Preferably, the groove is arranged in a "T" shape, and there are two groups of grooves. The grooves are symmetrically distributed inside the first base and the second base respectively. The dustproof part is arranged in a ring shape, one side of the dustproof part is in conflict with the outer side of the shaft body, and the other side of the dustproof part is arranged in an inclined surface.

[0011] Preferably, one side of the oil-proof part is arranged in an arc shape, and one side of the oil-proof part conflicts with the outer side of the shaft body. The clamping groove and the clamping block are both arranged in an annular shape, and the clamping groove and the clamping block are connected in a clamping manner. One side of the oil-proof part is arranged in an inclined surface, and one side of the oil-proof part conflicts with the outer side of the shaft body.

[0012] Preferably, the oil-blocking structure includes an annular wall, an oil groove, an oil-blocking plate, a telescopic spring and an oil guide hole. The annular wall is arranged at the top of the second base at the bottom end of the first base, an oil groove is arranged inside the annular wall, oil-blocking plates are arranged at both ends of the oil groove, a telescopic spring is arranged on the outside of the shaft body inside the oil groove, and oil guide holes are arranged on both sides of the annular wall.

[0013] Preferably, the top of the annular wall is fixedly connected to the bottom end of the first base, and the bottom end of the annular wall is fixedly connected to the top of the second base. Two groups of oil baffles are provided, and the oil baffles are symmetrically distributed inside the oil tank. One end of the oil baffle is in conflict with one end of the first base and the second base respectively.

[0014] Preferably, the shaft body and the annular wall form a telescopic structure through a telescopic spring, and two groups of oil guide holes are provided, and the oil guide holes are symmetrically distributed on both sides of the annular wall.

[0015] The utility model provides an internal and external dustproof oil seal structure, which has the following advantages:

[0016] The cam is provided with a plurality of sealing members, each of which is provided with a plurality of sealing members, and the plurality of sealing members are provided with a plurality of sealing members, each of which is provided with a plurality of sealing members. The plurality of sealing members are provided with a plurality of sealing members, each of which is provided with a plurality of sealing members.

[0017] By providing an oil baffle structure and a telescopic spring, the two ends of the telescopic spring always fix the oil baffle plate through elastic pressure. When the shaft moves, the two sets of oil baffle plates are driven to reset under the elastic force of the telescopic spring, thereby ensuring the oil baffle function of the oil baffle plate and reducing the risk of oil leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0020] Figure 3 For the utility model Figure 2 A in the middle is an enlarged structural diagram;

[0021] Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the utility model;

[0022] Figure 5 This is a three-dimensional structural diagram of the dustproof structure of the utility model.

[0023] Explanation of the reference numerals in the figure: 1. Shaft; 101. First base; 102. Second base; 103. Dustproof structure; 1031. Groove; 1032. Sealing ring; 1033. Dustproof part; 1034. Oil-proof part; 1035. Spring groove; 1036. Annular spring; 1037. Clamping groove; 1038. Clamping block; 1039. Oil-blocking part; 104. Oil-blocking structure; 1041. Annular wall; 1042. Oil groove; 1043. Oil-blocking plate; 1044. Telescopic spring; 1045. Oil guide hole. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-5 The utility model provides an internal and external dustproof oil seal structure, which includes a shaft body 1 and a first base 101.

[0026] Reference Figure 1-Figure 3 and Figure 5As shown, the shaft body 1 includes a first base 101, a second base 102, a dustproof structure 103 and an oil-blocking structure 104. The first base 101 is arranged on the outside of the shaft body 1. The second base 102 is arranged at the bottom end of the first base 101 outside the shaft body 1. The first base 101 and the second base 102 are both provided with a dustproof structure 103 inside. The dustproof structure 103 includes a groove 1031, a sealing ring 1032, a dustproof part 1033, an oil-blocking part 1034, and a spring groove 1035. , annular spring 1036, clamping groove 1037, clamping block 1038 and oil blocking portion 1039, the groove 1031 is arranged inside the first base 101 and the second base 102, the interior of the groove 1031 is provided with a sealing ring 1032, the outer side of the shaft body 1 at the top of the sealing ring 1032 is provided with a dustproof portion 1033, the bottom end of the sealing ring 1032 in the groove 1031 is provided with an oil-proof portion 1034, and a spring groove 1035 is provided on one side of the oil-proof portion 1034 , an annular spring 1036 is provided inside the spring groove 1035, a clamping groove 1037 is provided inside the top of the sealing ring 1032, a clamping block 1038 is fixed on one side of the groove 1031 outside the clamping groove 1037, an oil blocking portion 1039 is provided at the bottom end of the groove 1031, the groove 1031 is arranged in a "T" shape, and there are two groups of grooves 1031, which are symmetrically distributed inside the first base 101 and the second base 102 respectively, and the dustproof portion 103 3 is arranged in an annular shape, one side of the dustproof part 1033 conflicts with the outer side of the shaft body 1, and the other side of the dustproof part 1033 is arranged in an inclined surface. One side of the oil-proof part 1034 is arranged in an arc shape, and one side of the oil-proof part 1034 conflicts with the outer side of the shaft body 1. The clamping groove 1037 and the clamping block 1038 are both arranged in an annular shape, and the clamping groove 1037 and the clamping block 1038 are clamped and connected. One side of the oil-blocking part 1039 is arranged in an inclined surface, and one side of the oil-blocking part 1039 conflicts with the outer side of the shaft body 1.

[0027] By forming a snap-fit structure with the snap-fit groove 1037 in the sealing ring 1032 and the snap-fit blocks 1038 on the first base 101 and the second base 102 respectively, the sealing ring 1032 is installed inside the groove 1031, thereby effectively enhancing the strength of the sealing ring 1032 and avoiding distortion due to excessive pressure. By setting a dustproof portion 1033, one side of the dustproof portion 1033 is set as an inclined surface, thereby effectively sealing and dustproofing the two ends of the shaft body 1, further improving the sealing effect of the sealing ring 1032. By setting an annular spring 1036 on one side of the oil-proof portion 1034, an elastic force is applied to the oil-proof portion 1034, thereby improving the sealing effect of the oil-proof portion 1034, and then cooperating with the oil-blocking portion 1039 to effectively improve the oil-proof effect of the oil seal structure.

[0028] Reference Figure 2 and Figure 4As shown, an oil retaining structure 104 is provided at the top of the second base 102 at the bottom end of the first base 101. The oil retaining structure 104 includes an annular wall 1041, an oil groove 1042, an oil retaining plate 1043, a telescopic spring 1044 and an oil guide hole 1045. The annular wall 1041 is provided at the top of the second base 102 at the bottom end of the first base 101. An oil groove 1042 is provided inside the annular wall 1041. Oil retaining plates 1043 are provided at both ends of the oil groove 1042. A telescopic spring 1044 is provided on the outside of the shaft 1 inside the oil groove 1042. Both sides of the annular wall 1041 are provided. There is an oil guide hole 1045, the top of the annular wall 1041 is fixedly connected to the bottom of the first base 101, and the bottom of the annular wall 1041 is fixedly connected to the top of the second base 102. Two groups of oil baffles 1043 are provided, and the oil baffles 1043 are symmetrically distributed inside the oil groove 1042. One end of the oil baffle 1043 respectively conflicts with one end of the first base 101 and the second base 102. The shaft 1 and the annular wall 1041 form a telescopic structure through the telescopic spring 1044. Two groups of oil guide holes 1045 are provided, and the oil guide holes 1045 are symmetrically distributed on both sides of the annular wall 1041.

[0029] By setting up the telescopic spring 1044, the two ends of the telescopic spring 1044 always fix the oil baffle 1043 through elastic pressure. When the shaft body 1 moves, the two groups of oil baffles 1043 are driven to reset under the elastic force of the telescopic spring 1044, thereby ensuring the oil-blocking function of the oil baffle 1043 and reducing the risk of oil leakage.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, 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. An internal and external dustproof oil seal structure, comprising a shaft (1) and a first base (101); Its characteristics are: The shaft body (1) comprises a first base (101), a second base (102), a dustproof structure (103) and an oil retaining structure (104); the first base (101) is arranged on the outside of the shaft body (1); and the second base (102) is arranged at the bottom end of the first base (101) outside the shaft body (1); A dustproof structure (103) is provided inside the first base (101) and the second base (102); An oil retaining structure (104) is provided at the bottom end of the first base (101) and the top end of the second base (102); The dustproof structure (103) comprises a groove (1031), a sealing ring (1032), a dustproof portion (1033), an oil-proof portion (1034), a spring groove (1035), an annular spring (1036), a snap-fit groove (1037), a snap-fit block (1038) and an oil-blocking portion (1039). The groove (1031) is arranged inside the first base (101) and the second base (102). The sealing ring (1032) is arranged inside the groove (1031). The dustproof portion (1033) is arranged outside the shaft body (1) at the top end of the sealing ring (1032). The dust portion (1033) is provided with an oil-proof portion (1034) at the bottom end of the sealing ring (1032) inside the groove (1031), a spring groove (1035) is provided on one side of the oil-proof portion (1034), an annular spring (1036) is provided inside the spring groove (1035), a clamping groove (1037) is provided inside the top end of the sealing ring (1032), a clamping block (1038) is fixed on one side of the groove (1031) outside the clamping groove (1037), and an oil-blocking portion (1039) is provided at the bottom end of the groove (1031).

2. The inner and outer dustproof oil seal structure according to claim 1, characterized in that: The grooves (1031) are arranged in a T-shape, and two groups of grooves (1031) are provided. The grooves (1031) are symmetrically distributed inside the first base (101) and the second base (102), respectively. The dustproof portion (1033) is arranged in an annular shape, one side of the dustproof portion (1033) contacts the outer side of the shaft body (1), and the other side of the dustproof portion (1033) is arranged in an inclined surface.

3. The inner and outer dustproof oil seal structure according to claim 2, characterized in that: One side of the oil-blocking portion (1034) is arranged in an arc shape, and one side of the oil-blocking portion (1034) contacts the outer side of the shaft body (1); the engaging groove (1037) and the engaging block (1038) are both arranged in an annular shape, and the engaging groove (1037) and the engaging block (1038) are engaged with each other; one side of the oil-blocking portion (1039) is arranged in an inclined shape, and one side of the oil-blocking portion (1039) contacts the outer side of the shaft body (1).

4. The inner and outer dustproof oil seal structure according to claim 1, characterized in that: The oil-blocking structure (104) comprises an annular wall (1041), an oil groove (1042), an oil-blocking plate (1043), a telescopic spring (1044), and an oil guide hole (1045). The annular wall (1041) is arranged at the bottom end of the first base (101) and the top end of the second base (102). The annular wall (1041) is provided with an oil groove (1042) inside. The oil-blocking plates (1043) are provided at both ends of the oil groove (1042). The telescopic spring (1044) is provided on the outside of the shaft (1) inside the oil groove (1042). The oil guide holes (1045) are provided on both sides of the annular wall (1041).

5. The inner and outer dustproof oil seal structure according to claim 4, characterized in that: The top end of the annular wall (1041) is fixedly connected to the bottom end of the first base (101), and the bottom end of the annular wall (1041) is fixedly connected to the top end of the second base (102). Two groups of oil baffles (1043) are provided. The oil baffles (1043) are symmetrically distributed inside the oil tank (1042), and one end of the oil baffles (1043) contacts one end of the first base (101) and one end of the second base (102).

6. The inner and outer dustproof oil seal structure according to claim 5, characterized in that: The shaft (1) and the annular wall (1041) form a telescopic structure via a telescopic spring (1044). Two groups of oil guide holes (1045) are provided, and the oil guide holes (1045) are symmetrically distributed on both sides of the annular wall (1041).

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