Right angle quick connect coupling

Abstract

The utility model belongs to the technical field of automobile parts, and relates to a right-angle quick plug connector. The utility model, including vertical connecting body and L type connecting body, the vertical connecting body has the import end in, L type connecting body has the connecting port and export end in, be equipped with the flow guide optimization structure between the export end and the connecting port, be equipped with the buckle type anti -looseness sealing element between the vertical connecting body and L type connecting body. The utility model in the use process, through setting up the flow guide optimization structure between the export end and the connecting port, utilize the local speed control structure formed by arc guide surface and horizontal step, the flow direction and the speed of fluid are accurately guided and controlled, this structure can make fluid smooth transition in the connector inside, reduce the vortex and turbulence produced because of flow direction mutation, thereby effectively reduce energy loss, improve fluid transmission efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology and relates to a right-angle quick-connect connector. Background Technology

[0002] In existing technologies, right-angle quick-connect couplings are widely used in the automotive industry. However, traditional right-angle quick-connect couplings have several problems. First, when fluid flows inside the coupling, turbulence is easily generated due to the unreasonable channel structure, resulting in significant energy loss and reduced fluid transmission efficiency. For example, in the transition area between the connection port and the outlet, the fluid flow direction changes abruptly, easily forming eddies and causing unnecessary pressure loss. Second, traditional couplings have poor backflow prevention performance. When the system pressure fluctuates, fluid may flow back, affecting the normal operation of the system and even potentially damaging equipment. Third, existing right-angle quick-connect couplings have poor sealing and anti-loosening effects in their connection structure. Long-term use can easily lead to loosening and leakage, causing fluid waste and potentially safety hazards. Therefore, there is an urgent need to design a right-angle quick-connect coupling that can effectively reduce turbulence loss, improve backflow prevention, and possess reliable sealing and anti-loosening performance.

[0003] To overcome the shortcomings of existing technologies, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses a practical nylon right-angle quick-connect connector for automobiles [Application No.: 201110253291.1], which includes a vertical connector and a horizontal connector. The vertical connector is connected to the horizontal connector at a right angle via a connecting block. The lower end of the vertical connector is a bamboo-joint tail with four chamfers. The connector has reinforcing ribs, and the horizontal connector has grooves, and O-rings are installed on the grooves. However, this solution is still prone to turbulence during use, resulting in significant energy loss, reduced fluid transmission efficiency, and poor backflow prevention and sealing performance. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing a right-angle quick-connect connector.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A right-angle quick-connect connector includes a vertical connector and an L-shaped connector. The vertical connector has an inlet end, and the L-shaped connector has a connection port and an outlet end. A flow-guiding optimization structure is provided between the outlet end and the connection port. A snap-on anti-loosening seal is provided between the vertical connector and the L-shaped connector.

[0007] In the aforementioned right-angle quick-connect connector, the flow-guiding optimization structure includes two horizontal steps disposed between the outlet end and the connection port, forming a V-shaped surface between the two horizontal steps, and a flow-guiding part is provided at the bottom of the horizontal steps, with the end of the connection port connected to the flow-guiding part.

[0008] In the aforementioned right-angle quick-connect connector, the flow guide includes an arc-shaped guide surface disposed at the bottom of the horizontal step.

[0009] In the aforementioned right-angle quick-connect connector, a transition connection surface is formed between the arc-shaped guide surface and the horizontal step.

[0010] In the aforementioned right-angle quick-connect connector, the L-shaped connector body has two anti-backflow buffer cavities, and the anti-backflow buffer cavities are conical.

[0011] In the aforementioned right-angle quick-connect connector, the anti-backflow buffer cavity is composed of two walls, one of which is smoothly connected to the arc-shaped guide surface, and the other wall is smoothly connected to the inner wall of the outlet end.

[0012] In the aforementioned right-angle quick-connect connector, the snap-on anti-loosening seal includes a built-in sealing ring disposed between the vertical connector and the L-shaped connector, and the top of the built-in sealing ring is provided with a snap-on sleeve.

[0013] In the aforementioned right-angle quick-connect connector, the L-shaped connector body has a first annular step and a second annular step, the built-in sealing ring is located at the first annular step, and the snap-fit ​​sleeve is located at the second annular step.

[0014] In the aforementioned right-angle quick-connect connector, the L-shaped connector body is provided with an alignment groove, and the snap-fit ​​sleeve is provided with an alignment protrusion that slides and engages with the alignment groove.

[0015] In the aforementioned right-angle quick-connect connector, the L-shaped connector body is further provided with several snap grooves, and the snap-fit ​​sleeve is provided with an elastic snap plate that extends into the snap grooves and engages with them.

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] 1. In the process of use, this utility model sets up a flow-guiding optimization structure between the outlet end and the connection port. By using the local speed control structure formed by the arc-shaped guide surface and the horizontal step, the flow direction and speed of the fluid are precisely guided and controlled. This structure enables the fluid to smoothly transition inside the joint, reducing eddies and turbulence caused by sudden changes in flow direction, thereby effectively reducing energy loss and improving fluid transmission efficiency.

[0018] 2. By setting up an anti-backflow buffer chamber, this utility model can buffer the fluid to both sides, change the fluid backflow path, and prevent the fluid from flowing directly back to the inlet end, which greatly improves the anti-backflow performance of the connector and ensures the stable operation of the system under complex working conditions such as pressure fluctuations.

[0019] 3. The snap-fit ​​anti-loosening seal in this utility model adopts a structure combining an internal sealing ring and a snap-fit ​​sleeve. The internal sealing ring provides a good sealing effect and prevents fluid leakage. The snap-fit ​​sleeve achieves reliable anti-loosening fixation through the mutual cooperation of the alignment groove, alignment protrusion, snap groove and elastic plate, ensuring that the joint is stable and not easy to loosen during long-term use.

[0020] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a top view of the present invention.

[0023] Figure 3 yes Figure 2 A schematic diagram of the cross section of AA.

[0024] Figure 4 This is a schematic diagram of the vertical connector.

[0025] Figure 5 This is a schematic diagram of the L-shaped connector.

[0026] Figure 6 yes Figure 5 Enlarged diagram of point B in the middle.

[0027] In the figure: 1. Vertical connector; 2. L-shaped connector; 3. Inlet end; 4. Connection port; 5. Outlet end; 6. Flow guiding optimization structure; 7. Snap-on anti-loosening seal; 8. Horizontal step; 9. Flow guiding part; 10. Arc-shaped guide surface; 11. Anti-backflow buffer cavity; 12. Built-in sealing ring; 13. Snap-on sleeve; 14. First annular step; 15. Second annular step; 16. Alignment groove; 17. Alignment protrusion; 18. Snap groove; 19. Elastic retaining plate. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] like Figure 1-6As shown, a right-angle quick-connect connector includes a vertical connector 1 and an L-shaped connector 2. The vertical connector 1 has an inlet end 3, and the L-shaped connector 2 has a connection port 4 and an outlet end 5. A flow-guiding optimization structure 6 is provided between the outlet end 5 and the connection port 4, and a snap-on anti-loosening seal 7 is provided between the vertical connector 1 and the L-shaped connector 2.

[0030] In this embodiment, the right-angle quick-connect fitting consists of a vertical connector 1 and an L-shaped connector 2. The vertical connector 1 has an inlet end 3 inside, which serves as the fluid input end. The L-shaped connector 2 has a connection port 4 and an outlet end 5 inside, which are used to connect external components and output fluid, respectively. The flow-guiding optimization structure 6 between the outlet end 5 and the connection port 4 can optimize the fluid flow path. The snap-on anti-loosening seal 7 between the vertical connector 1 and the L-shaped connector 2 ensures the sealing and stability of the connection between the two. The flow-guiding optimization structure 6 can reduce fluid flow resistance, and the snap-on anti-loosening seal 7 prevents leakage and loosening at the connection.

[0031] Combination Figure 1-6 As shown, the flow-guiding optimization structure 6 includes two horizontal steps 8 disposed between the outlet end 5 and the connection port 4, forming a V-shaped surface between the two horizontal steps 8, and a flow-guiding part 9 is provided at the bottom of the horizontal steps 8, and the end of the connection port 4 is connected to the flow-guiding part 9.

[0032] Specifically, the horizontal step 8 is horizontally arranged in the channel of the L-shaped connector 2, and the V-shaped surface guides the fluid to gradually change its flow direction; the guide section 9 receives the fluid from the connection port 4 and guides it to the outlet end 5. The V-shaped surface and the horizontal step 8 can pre-guide the fluid, reduce the impact when the fluid changes direction, and the guide section 9 further smooths the fluid path. Compared with the traditional straight channel structure, it significantly reduces turbulence loss and improves fluid transmission efficiency.

[0033] The flow guide 9 includes an arc-shaped guide surface 10 disposed at the bottom of the horizontal step 8.

[0034] In this embodiment, the arc-shaped guide surface 10 serves as a key curved surface for guiding the flow. One end of the arc-shaped guide surface 10 connects to the bottom of the horizontal step 8, and the other end extends to the direction of the outlet end 5, forming a smooth fluid channel. The arc-shaped guide surface 10 can guide the fluid to change direction with minimal resistance, avoiding eddies caused by sharp corners. Compared with the traditional right-angle transition structure, it significantly reduces energy loss.

[0035] Combination Figure 5 , Figure 6 As shown, a transitional connection surface is formed between the arc-shaped guide surface 10 and the horizontal step 8.

[0036] In this embodiment, the transition connection surface is an arc-shaped or near-arc-shaped structure, seamlessly connecting the bottom surface of the horizontal step 8 and the arc-shaped guide surface 10, ensuring that there are no abrupt changes in the fluid channel. The transition connection surface eliminates the obstruction points of fluid flow, further improving the smoothness of the guide structure. Compared with the traditional stepped connection, it effectively reduces local pressure loss.

[0037] The L-shaped connector 2 has two anti-backflow buffer cavities 11, and the anti-backflow buffer cavities 11 are conical.

[0038] In this embodiment, the anti-backflow buffer chamber 11 is located on both sides of the channel near the outlet end 5, and together with the flow guiding optimization structure 6 and the inner wall of the outlet end 5, it forms a fluid channel. When the fluid flows back, the conical anti-backflow buffer chamber 11 diverts the fluid to both sides through diffusion, preventing it from flowing back to the inlet end 3. Compared with the traditional unbuffered structure, it significantly improves the anti-backflow capability of the connector and ensures the stability of system operation.

[0039] Combination Figure 6 As shown, the anti-backflow buffer cavity 11 is composed of two walls. One wall is smoothly connected to the arc-shaped guide surface 10, and the other wall is smoothly connected to the inner wall of the outlet end 5.

[0040] In this embodiment, the two walls together form a conical cavity and form a continuous curved surface with the surrounding flow guiding structure, ensuring smooth fluid flow in the cavity. The smoothly connected walls prevent the fluid from generating eddies in the buffer cavity, ensuring the high efficiency and low loss of the anti-backflow process. Compared with the traditional right-angle connected buffer structure, the anti-backflow performance is further optimized.

[0041] The snap-on anti-loosening seal 7 includes an internal sealing ring 12 disposed between the vertical connector 1 and the L-shaped connector 2, and the top of the internal sealing ring 12 is provided with a snap-on sleeve 13.

[0042] In this embodiment, the built-in sealing ring 12 is embedded between the contact surfaces of the two connecting bodies to form a seal; the snap-fit ​​sleeve 13 covers the built-in sealing ring 12 and achieves anti-loosening through a mechanical structure. The built-in sealing ring 12 provides basic sealing performance, and the snap-fit ​​sleeve 13 prevents the connecting bodies from loosening. The combination of the two replaces the traditional single sealing structure and achieves both sealing and anti-loosening functions.

[0043] Combination Figure 1-4 As shown, the L-shaped connector 2 has a first annular step 14 and a second annular step 15. The built-in sealing ring 12 is located at the first annular step 14, and the snap-fit ​​sleeve 13 is located at the second annular step 15.

[0044] In this embodiment, the first annular step 14 provides an installation positioning groove for the built-in sealing ring 12 to ensure that the sealing ring is subjected to uniform pressure; the second annular step 15 provides installation space and axial positioning for the snap-fit ​​sleeve 13. The design of the annular step realizes the precise positioning and stable installation of the sealing and anti-loosening components, which significantly improves the reliability and sealing performance of the connection structure compared with the traditional planar installation method.

[0045] Combination Figure 1-5 As shown, the L-shaped connector 2 is provided with an alignment groove 16, and the snap-fit ​​sleeve 13 is provided with an alignment protrusion 17 that slides and engages with the alignment groove 16.

[0046] In this embodiment, the alignment protrusion 17 is embedded in the alignment groove 16, which guides the snap-fit ​​sleeve 13 to be accurately positioned during the installation process and restricts its circumferential movement. The sliding fit structure realizes the rapid and accurate installation of the snap-fit ​​sleeve 13, while enhancing the circumferential stability between the connecting bodies. Compared with the traditional non-positioning installation method, it improves the assembly efficiency and connection reliability.

[0047] Combination Figure 1-5 As shown, the L-shaped connector 2 is also provided with several buckle slots 18, and the buckle sleeve 13 is provided with an elastic card plate 19 that extends into the buckle slots 18 and engages with the buckle slots 18.

[0048] In this embodiment, the elastic plate 19 undergoes elastic deformation during installation, and after being inserted into the buckle groove 18, it rebounds and locks, preventing the buckle sleeve 13 from axially disengaging. The snap-fit ​​structure provides a high-strength anti-loosening effect, and compared with traditional threaded or glue-fixing methods, it has better vibration and impact resistance, ensuring that the joint will not loosen during long-term use.

[0049] The working principle of this utility model is as follows:

[0050] When this right-angle quick-connect fitting is used for fluid transfer, the fluid flows in from the inlet end 3 of the vertical connector 1. After passing through the connection between the vertical connector 1 and the L-shaped connector 2, the built-in sealing ring 12, under the positioning action of the first annular step 14, tightly fits the two connectors to form a reliable seal and prevent fluid leakage. After entering the L-shaped connector 2, the fluid first reaches the connection port 4. Then, under the action of the flow-guiding optimization structure 6, it passes through the V-shaped surface formed by the horizontal step 8, the arc-shaped guide surface 10 at the bottom of the horizontal step 8, and the transition connection surface in sequence, and flows smoothly towards the outlet end 5 along the designed channel. During this process, the V-shaped surface, the horizontal step 8, the arc-shaped guide surface 10, and the transition connection surface work together to precisely control the flow direction and speed of the fluid, reduce the generation of turbulence, and reduce energy loss.

[0051] When the system pressure fluctuates and a fluid backflow tendency occurs, the anti-backflow buffer chamber 11 comes into play. The conical anti-backflow buffer chamber 11 diffuses and buffers the backflowing fluid to both sides through its two walls (which are smoothly connected to the arc-shaped guide surface 10 and the inner wall of the outlet end 5, respectively), changes the backflow path of the fluid, and prevents the fluid from flowing directly back to the inlet end 3, thus ensuring the stability of the system operation.

[0052] Throughout the entire process, the snap-fit ​​sleeve 13 in the snap-fit ​​anti-loosening seal achieves quick positioning and installation through the sliding engagement of the alignment protrusion 17 and the alignment groove 16. After installation, the elastic plate 19 springs into the snap groove 18 to form a firm snap-fit, ensuring that the vertical connector 1 and the L-shaped connector 2 always maintain a stable connection and will not loosen due to factors such as vibration and pressure changes, thereby ensuring the reliability and stability of the right-angle quick-connect fitting during fluid transmission.

[0053] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model.

[0054] Although this document frequently uses terms such as vertical connector 1, L-shaped connector 2, inlet end 3, connection port 4, outlet end 5, flow guiding optimization structure 6, snap-on anti-loosening seal 7, horizontal step 8, flow guiding part 9, arc-shaped guide surface 10, anti-backflow buffer cavity 11, built-in sealing ring 12, snap-on sleeve 13, first annular step 14, second annular step 15, alignment groove 16, alignment protrusion 17, snap groove 18, elastic retaining plate 19, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A right-angle quick-connect connector, comprising a vertical connector (1) and an L-shaped connector (2), wherein the vertical connector (1) has an inlet end (3), and the L-shaped connector (2) has a connection port (4) and an outlet end (5), characterized in that, A flow-guiding optimization structure (6) is provided between the outlet end (5) and the connection port (4), and a snap-on anti-loosening seal (7) is provided between the vertical connector (1) and the L-shaped connector (2).

2. The right-angle quick-connect connector according to claim 1, characterized in that, The flow-guiding optimization structure (6) includes two horizontal steps (8) disposed between the outlet end (5) and the connection port (4), forming a V-shaped surface between the two horizontal steps (8), and a flow-guiding part (9) is provided at the bottom of the horizontal steps (8), and the end of the connection port (4) is connected to the flow-guiding part (9).

3. The right-angle quick-connect connector according to claim 2, characterized in that, The flow guide (9) includes an arc-shaped guide surface (10) disposed at the bottom of the horizontal step (8).

4. The right-angle quick-connect connector according to claim 3, characterized in that, A transitional connection surface is formed between the arc-shaped guide surface (10) and the horizontal step (8).

5. The right-angle quick-connect connector according to claim 4, characterized in that, The L-shaped connector (2) has two anti-backflow buffer cavities (11), which are conical in shape.

6. The right-angle quick-connect connector according to claim 5, characterized in that, The anti-backflow buffer cavity (11) is composed of two walls. One wall is smoothly connected to the arc-shaped guide surface (10), and the other wall is smoothly connected to the inner wall of the outlet end (5).

7. The right-angle quick-connect connector according to claim 1, characterized in that, The snap-on anti-loosening seal (7) includes an internal sealing ring (12) disposed between the vertical connector (1) and the L-shaped connector (2), and the top of the internal sealing ring (12) is provided with a snap-on sleeve (13).

8. The right-angle quick-connect connector according to claim 7, characterized in that, The L-shaped connector (2) has a first annular step (14) and a second annular step (15). The built-in sealing ring (12) is located at the first annular step (14), and the snap-fit ​​sleeve (13) is located at the second annular step (15).

9. The right-angle quick-connect connector according to claim 8, characterized in that, The L-shaped connector (2) is provided with a positioning groove (16), and the snap-fit ​​sleeve (13) is provided with a positioning protrusion (17) that slides and engages with the positioning groove (16).

10. The right-angle quick-connect connector according to claim 9, characterized in that, The L-shaped connector (2) is also provided with several buckle slots (18), and the buckle sleeve (13) is provided with an elastic plate (19) that extends into the buckle slot (18) and engages with the buckle slot (18).

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