Stainless steel pipe joint of oil injection seat
By adopting a multi-channel sealing mechanism and reinforcement section in the fuel injection seat pipe joint, the problem of leakage of the fuel injection seat pipe joint in the prior art is solved, and a higher sealing and service life is achieved.
Patent Information
- Application Number
- CN202421111404.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The fuel injection seat pipe joints in existing automobile engines are prone to leakage, especially the leakage at the oil pipe socket caused by gaps at the threaded connection.
A stainless steel pipe joint was designed, using structures such as external thread, first sealing ring, positioning ring, thread sleeve, second sealing ring and reinforcement section. Through multi-channel sealing mechanism and full welding connection, the joint and oil injection seat are ensured and Sealing of the oil pipe.
It effectively prevents leakage, improves the reliability and sealing of the connection, extends the service life, and reduces the possibility of the oil pipe being disconnected from the joint.
Smart Images
Figure CN222209334U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automobile engine pipelines, in particular to a stainless steel pipe joint of an oil injection seat. Background Art
[0002] In an automobile engine, the fuel injector is mounted on the engine hood, the fuel injection seat is mounted in the seat hole on the fuel injector, and the fuel injection seat is connected to the oil pipe for transporting fuel through a pipe joint. The existing pipe joint has the following defects during use: the pipe joint and the oil outlet interface of the fuel injection seat are connected by threads, which will leak over time, and the oil pipe is sleeved on the pipe joint, and there is a gap at the connection between the two, which is prone to leakage. Summary of the invention
[0003] The utility model aims to solve the above technical problems existing in the prior art and provides a stainless steel pipe joint for an oil injection seat, which has novel structure, reliable connection, good sealing, is not prone to leakage and has strong practicality.
[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0005] A stainless steel pipe joint for an oil injection seat comprises: a joint body, characterized in that: an outer wall at one end of the joint body is provided with an external thread, a first sealing ring and a positioning ring, the external thread is used for threaded connection with the oil outlet interface of the oil injection seat, and the first sealing ring is located between the external thread and the positioning ring; an anti-drop protrusion is provided on the outer wall at the other end of the joint body. The pipe joint has a novel structure, reliable connection, good sealing, is not prone to leakage, and is highly practical.
[0006] Furthermore, a threaded sleeve is provided on the outer wall of one end of the joint body, the threaded sleeve is close to the anti-slip protrusion, and a receiving groove is formed between the threaded sleeve and the joint body, and the receiving groove corresponds to the oil pipe. When the oil pipe is connected to the joint body, the oil pipe is extended into the receiving groove and rests against the inner bottom surface of the receiving groove. The gap at the connection between the oil pipe and the joint body is blocked to prevent leakage, and the sealing performance is good.
[0007] Furthermore, a groove is provided on the outer peripheral wall of the positioning ring, and a second sealing ring is sleeved on the groove. The thickness of the second sealing ring is greater than the depth of the groove. When the joint body is connected to the oil outlet interface of the fuel injection seat, the second sealing ring presses against the end face of the oil outlet interface of the fuel injection seat. The second sealing ring is slightly deformed, blocking the gap between the positioning ring and the oil outlet interface of the fuel injection seat to prevent leakage at the gap, and cooperates with the first sealing ring to form inner and outer seals, with good sealing performance.
[0008] Furthermore, a limiting groove corresponding to the first sealing ring is provided on the outer wall of the joint body, which facilitates the disassembly, assembly and replacement of the first sealing ring on one hand, and can limit the free sliding of the first sealing ring on the joint body on the other hand, so that the installation is stable and reliable.
[0009] Furthermore, a reinforcement section is provided outside the joint body, which improves the external structural strength of the joint body, is resistant to pressure impact, is not easily deformed, and has a long service life.
[0010] Furthermore, the surface of the joint body is coated with a galvanized layer, which improves the corrosion resistance of the joint body, makes it less prone to corrosion and rust, and has a long service life.
[0011] Furthermore, the locating ring is fully welded to the joint body, which improves the connection strength between the locating ring and the joint body, avoids the generation of gaps at the connection between the two, prevents leakage, and has good sealing performance.
[0012] The utility model has the following beneficial effects due to the adoption of the above technical solution:
[0013] 1. When the oil pipe is butt-jointed with the joint body, the oil pipe is inserted into the receiving groove between the threaded sleeve and the joint body and pressed against the inner bottom surface of the receiving groove. The gap at the connection between the oil pipe and the joint body is blocked to prevent leakage, and the sealing is good. The anti-detachment protrusion is close to the inner wall of the oil pipe. On the one hand, the anti-detachment performance of the oil pipe is improved and the possibility of the oil pipe freely detaching from the joint body is reduced. On the other hand, the gap at the connection between the two is greatly reduced, which is not easy to leak and has good sealing.
[0014] 2. When the joint body is connected to the oil outlet interface of the fuel injection seat, the second sealing ring is against the end face of the oil outlet interface of the fuel injection seat, and the second sealing ring is slightly deformed, blocking the gap between the positioning ring and the oil outlet interface of the fuel injection seat to prevent leakage from the gap. The first sealing ring is close to the inner wall of the oil outlet interface of the fuel injection seat to block the gap, which is not easy to leak, forming two internal and external seals with good sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The utility model is further described below in conjunction with the accompanying drawings:
[0016] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model;
[0017] Figure 2 This is a structural schematic diagram of the joint body and the first sealing ring in the first embodiment;
[0018] Figure 3 This is a schematic diagram of the structure of the connection between the joint body and the threaded sleeve in the first embodiment;
[0019] Figure 4 This is a structural schematic diagram of the connection between the joint body, the oil outlet interface of the oil injection seat, and the oil pipe in the first embodiment;
[0020] Figure 5 This is a schematic diagram of the structure of the second embodiment of the present utility model;
[0021] Figure 6 This is a schematic diagram of the structure of the docking between the positioning ring and the second sealing ring in the second embodiment.
[0022] In the figure: 1-connector body; 2-reinforcement section; 3-first sealing ring; 4-positioning ring; 5-injection seat oil outlet interface; 6-limiting groove; 7-anti-slip protrusion; 8-threaded sleeve; 9-accommodating groove; 10-oil pipe; 11-missing groove; 12-second sealing ring. DETAILED DESCRIPTION
[0023] like Figures 1 to 4 As shown, this is an embodiment of the present utility model
[0024] A stainless steel pipe joint for an oil injection seat comprises: a joint body 1, the surface of the joint body 1 is coated with a galvanized layer, which improves the corrosion resistance of the joint body 1, is not easy to corrode and rust, and has a long service life. A reinforcement section 2 is arranged outside the joint body 1, which improves the external structural strength of the joint body 1, is pressure-resistant and impact-resistant, is not easy to deform, and has a long service life.
[0025] An external thread, a first sealing ring 3 and a positioning ring 4 are provided on the outer wall of one end of the joint body 1. The external thread is used for threaded connection with the oil outlet interface 5 of the fuel injection seat, which improves the convenience of connection. The first sealing ring 3 is located between the external thread and the positioning ring 4. When the joint body 1 is connected to the oil outlet interface 5 of the fuel injection seat, the positioning ring 4 abuts against the end face of the oil outlet interface 5 of the fuel injection seat, limiting the length of the joint body 1 entering the oil outlet interface 5 of the fuel injection seat, ensuring a sufficient connection area, and the joint body 1 is not easy to freely detach from the oil outlet interface 5 of the fuel injection seat. The first sealing ring 3 is close to the inner wall of the oil outlet interface 5 of the fuel injection seat, blocking the gap, and is not easy to leak, with good sealing performance.
[0026] A limiting groove 6 corresponding to the first sealing ring 3 is provided on the outer wall of the joint body 1, which facilitates the disassembly, assembly and replacement of the first sealing ring 3 on the one hand, and can limit the free sliding of the first sealing ring 3 on the joint body 1 on the other hand, so that the installation is stable and reliable.
[0027] The positioning ring 4 is fully welded to the joint body 1, which improves the connection strength between the positioning ring 4 and the joint body 1, avoids the generation of gaps at the connection between the two, prevents leakage, and has good sealing performance.
[0028] An anti-dropping protrusion 7 and a threaded sleeve 8 are provided on the outer wall of the other end of the joint body 1 . An accommodating groove 9 is formed between the threaded sleeve 8 and the joint body 1 . The accommodating groove 9 corresponds to the oil pipe 10 .
[0029] When the oil pipe 10 is docked with the joint body 1, the oil pipe 10 is extended into the accommodating groove 9 and rests against the inner bottom surface of the accommodating groove 9. The gap at the connection between the oil pipe 10 and the joint body 1 is blocked to prevent leakage and has good sealing. The anti-detachment protrusion 7 is tightly attached to the inner wall of the oil pipe 10. On the one hand, the anti-detachment performance of the oil pipe 10 is improved and the possibility of the oil pipe 10 freely detaching from the joint body 1 is reduced. On the other hand, the gap at the connection between the two is greatly reduced, leakage is not easy to occur, and the sealing is good.
[0030] like Figure 5 , Figure 6 As shown, this is the second embodiment of the utility model
[0031] In the technical solution based on the first embodiment, a notch 11 is provided on the outer peripheral wall of the positioning ring 4, and a second sealing ring 12 is sleeved on the notch 11, which is easy to replace. The thickness of the second sealing ring 12 is greater than the depth of the notch 11. When the joint body 1 is docked with the oil outlet interface 5 of the fuel injection seat, the second sealing ring 12 presses against the end face of the oil outlet interface 5 of the fuel injection seat, and the second sealing ring 12 is slightly deformed, thereby blocking the gap between the positioning ring 4 and the oil outlet interface 5 of the fuel injection seat to prevent leakage at the gap, and cooperates with the first sealing ring 3 to form inner and outer seals with good sealing performance.
[0032] The above are only specific embodiments of the utility model, but the technical features of the utility model are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the utility model to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the utility model.
Claims
1. A stainless steel pipe joint for a fuel injection seat, comprising: Connector body, Features: An external thread, a first sealing ring and a positioning ring are provided on the outer wall of one end of the joint body, the external thread is used to be threadedly connected to the oil outlet interface of the injection seat, and the first sealing ring is located between the external thread and the positioning ring; An anti-drop protrusion is arranged on the outer wall of the other end of the joint body.
2. The stainless steel pipe joint of the fuel injection seat according to claim 1, characterized in that: A threaded sleeve is provided on the outer wall of one end of the joint body, the threaded sleeve is close to the anti-slip protrusion, and an accommodating groove is formed between the threaded sleeve and the joint body, and the accommodating groove corresponds to the oil pipe.
3. The stainless steel pipe joint of the fuel injection seat according to claim 1, characterized in that: A notch is provided on the outer peripheral wall of the positioning ring, and a second sealing ring is sleeved on the notch. The thickness of the second sealing ring is greater than the depth of the notch.
4. The stainless steel pipe joint of the fuel injection seat according to claim 1, characterized in that: A limiting groove corresponding to the first sealing ring is provided on the outer wall of the joint body.
5. The stainless steel pipe joint of the fuel injection seat according to claim 1, characterized in that: A reinforcement section is provided outside the joint body.
6. The stainless steel pipe joint of the fuel injection seat according to claim 1, characterized in that: The surface of the joint body is coated with a zinc plating layer.
7. The stainless steel pipe joint of the fuel injection seat according to claim 1, characterized in that: The positioning ring is fully welded to the joint body.