Leakage-proof sealing nut for high-pressure oil pipe of engine

Abstract

The utility model discloses a leakproof sealing nut for an engine high-pressure oil pipe, which relates to the technical field of nuts and comprises a nut assembly, the bottom end of the nut assembly is sleeved with a locking component and a sealing component, and the sealing component is positioned at the bottom of the locking component. Through the arrangement of the first sealing ring, after the nut is screwed down, the first sealing ring can improve the sealing performance, meanwhile, after the nut is screwed down, the rotating ring is screwed down, the extension ring is driven to press the elastic ring, the two second sealing rings are pressed tightly, the sealing performance is further improved, and through the arrangement of triple sealing, the sealing effect of the nut can be greatly improved; and the phenomenon of oil leakage is prevented, and safe driving of the vehicle is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of nuts, in particular to a leakage-proof sealing nut for a high-pressure oil pipe of an engine. Background Art

[0002] High-pressure fuel lines are part of the high-pressure oil circuit. They must withstand a certain level of oil pressure and possess a certain level of fatigue resistance to ensure a tight seal. These automotive high-pressure fuel lines are primarily found in high-pressure injection diesel engines and high-pressure direct-injection gasoline engines. They must withstand the oil pressure required during engine operation. During connection, the high-pressure fuel line is connected to the screw on the engine via a nut. However, current engine high-pressure fuel line nuts offer poor sealing performance, which can easily lead to oil leaks, impacting vehicle operation and posing a safety hazard.

[0003] Therefore, it is necessary to invent a leak-proof sealing nut for an engine high-pressure oil pipe to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a leak-proof sealing nut for a high-pressure oil pipe of an engine, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the utility model provides the following technical solution: an engine high-pressure oil pipe leak-proof sealing nut, comprising a nut assembly, the bottom end of the nut assembly being sleeved with a locking assembly and a sealing assembly, and the sealing assembly being located at the bottom of the locking assembly;

[0006] The nut assembly includes a nut body, and the top end of the outer side wall of the nut body is arranged in a regular hexagonal shape;

[0007] The sealing assembly includes an elastic ring, and the inner side wall of the elastic ring is fixedly connected to the bottom end of the outer side wall of the nut body;

[0008] The locking assembly includes a rotating ring, and an extension ring is fixedly provided at the bottom end of the rotating ring.

[0009] Preferably, a first sealing ring is embedded around the middle of the bottom end of the nut body, and the bottom end of the first sealing ring extends to the bottom of the nut body, and the bottom end portion of the outer side wall of the nut body is provided with a thread.

[0010] Preferably, second sealing rings are arranged around the outer side and the inner side of the bottom end of the elastic ring, and the bottom ends of the two second sealing rings are flush.

[0011] Preferably, the outer side wall of the swivel is arranged in a regular hexagon, and the inner side wall of the swivel is threadedly connected to the bottom end of the outer side wall of the nut body.

[0012] Preferably, an extension ring is arranged around the bottom end of the rotating ring, a top ring is fixedly arranged on the bottom end of the extension ring, and the top ring is adapted to the elastic ring.

[0013] Preferably, a plurality of damping bars are fixedly provided on the bottom end of the top ring, and the plurality of damping bars are distributed in a ring array.

[0014] The technical effects and advantages of this utility model are:

[0015] The utility model provides a first sealing ring, which can improve the sealing performance after the nut is tightened. At the same time, after the nut is tightened, the swivel is tightened to drive the extension ring to press the elastic ring, so that the two second sealing rings are compressed, further improving the sealing performance. The triple sealing setting can greatly improve the sealing effect of the nut, prevent oil leakage, and ensure the safe driving of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0017] Figure 2 This is a schematic diagram of the nut assembly structure of the present utility model.

[0018] Figure 3 This is a schematic diagram of the sealing component structure of the present utility model.

[0019] Figure 4 This is a schematic structural diagram of the locking assembly of the present utility model.

[0020] In the figure: 1. Nut assembly; 2. Sealing assembly; 3. Locking assembly; 101. Nut body; 102. First sealing ring; 201. Elastic ring; 202. Second sealing ring; 301. Swivel; 302. Extension ring; 303. Top ring; 304. Damping strip. DETAILED DESCRIPTION

[0021] 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.

[0022] The utility model provides Figure 1-4 The engine high-pressure oil pipe leak-proof sealing nut shown includes a nut assembly 1, the bottom end of the nut assembly 1 is sleeved with a locking component 3 and a sealing component 2, and the sealing component 2 is located at the bottom of the locking component 3.

[0023] Furthermore, the nut assembly 1 includes a nut body 101, and the top of the outer wall of the nut body 101 is set in a regular hexagon, a first sealing ring 102 is embedded around the middle of the bottom end of the nut body 101, and the bottom end of the first sealing ring 102 extends to the bottom of the nut body 101, and the bottom end of the outer wall of the nut body 101 is provided with a thread.

[0024] The sealing assembly 2 includes an elastic ring 201, which is made of a material with a certain elasticity, such as elastic plastic. It has a certain elasticity and is not easy to crack or damage. The inner wall of the elastic ring 201 is fixedly connected to the bottom end of the outer wall of the nut body 101. A second sealing ring 202 is arranged around the outside and inside of the bottom end of the elastic ring 201, and the bottom ends of the two second sealing rings 202 are flush.

[0025] The locking assembly 3 includes a swivel 301, an extension ring 302 is fixedly provided at the bottom end of the swivel 301, the outer wall of the swivel 301 is arranged in a regular hexagonal shape, the inner wall of the swivel 301 is threadedly connected to the bottom end of the outer wall of the nut body 101, and an extension ring 302 is arranged around the bottom end of the swivel 301. The bottom end of the extension ring 302 is fixedly provided with a top ring 303, and the top ring 303 is adapted to the elastic ring 201. Through the arrangement of the first sealing ring 102, after the nut is tightened, the first sealing ring 102 can improve the sealing At the same time, after the nut is tightened, by tightening the swivel 301, the extension ring 302 is driven to press the elastic ring 201, so that the two second sealing rings 202 are compressed to further improve the sealing performance. The triple seal setting can greatly improve the sealing effect of the nut, prevent oil leakage, and ensure the safe driving of the vehicle. A plurality of damping strips 304 are fixedly provided at the bottom end of the top ring 303, and the plurality of damping strips 304 are distributed in a ring array. The plurality of damping strips 304 can increase friction and prevent the top ring 303 from loosening.

[0026] Working principle of this utility model:

[0027] When in use, first tighten the nut assembly 1 so that the first sealing ring 102 fits tightly, then tighten the locking assembly 3 to move the swivel 301 toward the sealing assembly 2 until the top ring 303 presses the elastic ring 201 so that the two second sealing rings 202 fit tightly, thereby forming a triple sealing effect.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 replacements for some of the technical features therein. 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. Anti-leakage sealing nut for engine high-pressure oil pipe, characterized by: It comprises a nut assembly (1), wherein the bottom end of the nut assembly (1) is sleeved with a locking assembly (3) and a sealing assembly (2), and the sealing assembly (2) is located at the bottom of the locking assembly (3); The nut assembly (1) comprises a nut body (101), and the top end of the outer wall of the nut body (101) is arranged in a regular hexagonal shape; The sealing assembly (2) comprises an elastic ring (201), and the inner side wall of the elastic ring (201) is fixedly connected to the bottom end of the outer side wall of the nut body (101); The locking assembly (3) comprises a rotating ring (301), and an extension ring (302) is fixedly provided at the bottom end of the rotating ring (301).

2. The engine high-pressure oil pipe leak-proof sealing nut according to claim 1, characterized in that: A first sealing ring (102) is embedded around the middle of the bottom end of the nut body (101), and the bottom end of the first sealing ring (102) extends to the bottom of the nut body (101). The bottom end portion of the outer wall of the nut body (101) is provided with a thread.

3. The engine high-pressure oil pipe leak-proof sealing nut according to claim 2, characterized in that: Second sealing rings (202) are arranged around the outer side and the inner side of the bottom end of the elastic ring (201), and the bottom ends of the two second sealing rings (202) are flush.

4. The engine high-pressure oil pipe leak-proof sealing nut according to claim 3, characterized in that: The outer side wall of the rotating ring (301) is arranged in a regular hexagonal shape, and the inner side wall of the rotating ring (301) is threadedly connected to the bottom end of the outer side wall of the nut body (101).

5. The engine high-pressure oil pipe leak-proof sealing nut according to claim 4, characterized in that: An extension ring (302) is arranged around the bottom end of the rotating ring (301), and a top ring (303) is fixedly arranged at the bottom end of the extension ring (302), and the top ring (303) is adapted to the elastic ring (201).

6. The engine high-pressure oil pipe leak-proof sealing nut according to claim 5, characterized in that: A plurality of damping strips (304) are fixedly arranged at the bottom end of the top ring (303), and the plurality of damping strips (304) are distributed in a ring array.

Images