A low flow resistance high sealing fluid quick coupling

Abstract

The utility model discloses a low flow resistance high sealing fluid quick connector relates to quick connector technical field, including male joint, the output of male joint still is provided with female joint, and the upper and lower sides of male joint are provided with the locking assembly of locking female joint, the locking assembly includes lever, and one end of lever is provided with the pivot, and the pivot is hinged on male joint, the first end of lever is provided with the clamping portion, and the second end of lever is acted on the elastic pusher spare, the utility model discloses setting locking assembly, and lever mechanism amplifies a spring force, and the locking force that generates several times this in the clamping end, and this force will male joint and female joint closely pull together, ensure that the sealing ring in the inside is fully compressed to high sealing, and the continuous push of spring provides makes the locking state be normally closed. Even in the strong vibration environment, as long as not active pressing lever, the joint will not loosen.

Description

Technical Field

[0001] This utility model relates to the field of quick coupling technology, specifically a fluid quick coupling with low flow resistance and high sealing performance. Background Technology

[0002] Quick-connect fluid couplings are universal components used to quickly connect or disconnect pipelines. They are widely used in hydraulic systems, pneumatic tools, chemical conveying, cooling systems, and various industrial fluid pipelines. Their core requirements are quick connection, reliable sealing, low flow resistance, and good durability.

[0003] The existing patent (authorization announcement number: CN223282710U) discloses a threaded compression quick coupling. The key technical points of the solution are: by setting external threads and internal threads at both ends of the coupling body, the pipes to be connected can be screwed onto the first connection end and the second connection end respectively. The connection of the pipeline is achieved by relying on the screw force, which reduces the probability of the coupling separating from the pipeline during the fluid transportation process. By setting a sealing gasket, the sealing performance between the valve core and the valve sleeve can be further improved. And by setting a retaining ring for the hole, the axial movement of the spring seat can be restricted.

[0004] However, the above technical solutions still have certain defects. After long-term use, the threaded fit is not only prone to corrosion, but also difficult to disassemble. After corrosion, the locking force of the female connector is uneven. This uneven locking force will cause a slight tilt angle to be generated on the mating end face of the male and female connectors, which cannot always ensure that the sealing ring is evenly compressed. As a result, fluid leakage is likely to occur under high pressure or pulse pressure conditions. Therefore, a fluid quick connector with low flow resistance and high sealing performance is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a fluid quick connector with low flow resistance and high sealing performance to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A fluid quick connector with low flow resistance and high sealing performance includes a male connector, the output end of which is provided with a female connector, and locking components for locking the female connector are provided on the upper and lower sides of the male connector. The locking assembly includes a lever, one end of which is provided with a pivot, and the pivot is pivotally connected to the male connector; A locking portion is provided at the first end of the lever; An elastic pusher acts on the second end of the lever to apply an upward force to the second end; The elastic pusher includes a spring and a mounting cylinder. The mounting cylinder is fixed to the male connector, and the spring is housed inside the mounting cylinder with its top end abutting against the bottom of the second end of the lever.

[0007] Based on the above technical solutions, this utility model also provides the following optional technical solutions: As a further embodiment of this utility model: the locking component is mirrored on the upper and lower sides of the male connector, and a snap-fit ​​component is provided on the inner wall between the male connector and the female connector.

[0008] As a further embodiment of this utility model: the snap-fit ​​assembly includes a snap-fit ​​connector fixedly installed on the side of the male connector near the female connector, and snap-fit ​​posts are respectively provided on both sides of the female connector, with a snap-fit ​​block provided at one end of each of the two sets of snap-fit ​​posts.

[0009] As a further improvement of this utility model: the outer wall of the card block is adapted to the inner wall of the engaging part, and the side of the male connector is also provided with a limiting component to limit the female connector.

[0010] As a further embodiment of this utility model: the limiting component includes a fixed base fixedly disposed on the side of the male connector, a connecting arm rotatably connected to the fixed base, and a follower disposed on the free end of the connecting arm, wherein a slider is slidably disposed on the follower.

[0011] As a further improvement of this utility model, the card connector consists of two symmetrically arranged semicircular blocks.

[0012] As a further improvement of this utility model: the mating end faces of the male connector and the female connector are provided with sealing rings, and the internal flow channels are smooth transition straight flow channels.

[0013] As a further improvement of this utility model, the sealing ring is a double-lip sealing ring with a Y-shaped cross-section, and the two lips are respectively interference-fitted with the end face of the male connector and the inner wall of the female connector.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, by setting a locking component, amplifies the spring force through a lever mechanism, generating a locking force several times greater at the engaging end. This force tightly pulls the male and female connectors together, ensuring that the internal sealing ring is fully compressed, thereby achieving high sealing performance. The continuous pushing force provided by the spring ensures that the locking state is normally closed. Even in a strong vibration environment, the connector will not loosen as long as the lever is not actively pressed.

[0015] 2. This utility model, by setting up a snap-fit ​​component, forms a positioning pin with symmetrically arranged semi-circular blocks and snap-fit ​​blocks, ensuring that the male and female connectors are in a strictly coaxial state when connected. This means that the internal flow channels of the male and female connectors can achieve perfect smooth docking, avoiding misalignment or eccentricity of the flow channels, achieving low flow resistance, minimizing energy loss when the fluid passes through, and minimizing the impact of corrosion. At the same time, this connection method can minimize the impact of corrosion and can be used for a long time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the snap-fit ​​assembly of this utility model; Figure 3 This is a schematic diagram of the locking assembly of this utility model; Figure 4 This is a schematic diagram of the limiting component of this utility model.

[0017] Figure label annotations: 1. Male connector; 2. Female connector; 3. Locking assembly; 4. Snap-fit ​​assembly; 5. Limiting assembly; 31. Mounting base; 32. Adjusting rod; 33. Lever; 34. Engaging part; 35. Mounting cylinder; 36. Spring; 37. Elastic pusher; 41. Snap-fit ​​connector; 42. Snap-fit ​​post; 43. Snap-fit ​​block; 51. Fixed base; 52. Connecting arm; 53. Driven component; 54. Sliding block. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0019] In one embodiment, such as Figures 1-4 As shown, a fluid quick connector with low flow resistance and high sealing performance includes a male connector 1, and a female connector 2 is provided at the output end of the male connector 1. Locking components 3 for locking the female connector 2 are provided on the upper and lower sides of the male connector 1, and a snap-fit ​​component 4 is provided on the inner wall between the male connector 1 and the female connector 2. A limiting component 5 for limiting the female connector 2 is also provided on the side of the male connector 1. In this embodiment, when the operator pushes the female connector 2 toward the male connector 1, the snap-fit ​​component 4 located on the inner wall of the male and female connector 2 first contacts and engages, providing initial guidance and axial positioning for the male connector 1 and the female connector 2. After the initial engagement of the male connector 1 and the female connector 2 is completed, the locking component 3 clamps the male connector 1 and the female connector 2 to prevent overflow, and the limiting component 5 provides secondary protection for the female connector 2, preventing accidental loosening under strong vibration and maintaining a stable passage between the male connector 1 and the female connector 2.

[0020] In one embodiment, such as Figure 2 As shown, the snap-fit ​​assembly 4 includes a snap-fit ​​connector 41 fixedly installed on the side of the male connector 1 near the female connector 2. The female connector 2 has snap-fit ​​posts 42 on both sides, and each of the two sets of snap-fit ​​posts 42 has a snap-fit ​​block 43 at one end. The snap-fit ​​connector 41 consists of two symmetrically arranged semicircular blocks. When the operator pushes the female connector 2 toward the male connector 1, the snap-fit ​​posts 42 on both sides of the female connector 2 will first contact the grooves of the two symmetrically arranged semicircular blocks at the end of the male connector 1. When the female connector 2 is rotated and inserted, the snap-fit ​​block 43 passes the highest point of the semicircular block and is embedded in the slot formed by the two semicircular blocks. At this time, the side of the semicircular block will fit tightly with the side of the snap-fit ​​block 43 to form a positioning pin, ensuring that the male connector 1 and the female connector 2 are coaxial when connected.

[0021] In one embodiment, such as Figure 3As shown, the locking assembly 3 includes a lever 33, the middle part of which is pivotally connected to the male connector 1 via a pivot shaft; a locking part 34 is disposed at the first end of the lever 33; and an elastic pushing member 37 acts on the second end of the lever 33 to apply an upward force to the second end. The elastic pushing member 37 includes a spring 36 and a mounting sleeve 35. The mounting sleeve 35 is fixed to the male connector 1, and the spring 36 is housed within the mounting sleeve 35, with its top end abutting against the bottom of the second end of the lever 33. The locking assembly 3 is located on the male connector 1. The two sides are mirrored, and a snap-fit ​​component 4 is provided on the inner wall between the male connector 1 and the female connector 2. The outer wall of the snap-fit ​​block 43 is adapted to the inner wall of the snap-fit ​​part 34. When the operator pushes the female connector 2 toward the male connector 1, the snap-fit ​​block 43 on the female connector 2 will first contact the top of the second end of the lever 33. The continued insertion action will press down on the second end of the lever 33. Since the middle part of the lever 33 is fixed to the male connector 1 through the pivot, according to the principle of the lever 33, when the force-bearing end of the lever 33 is pressed, the snap-fit ​​part 34 will lift up to make room for the snap-fit ​​block 43 to pass through. When the second end is released, under the action of spring 36, the second end returns to its original position upward, the engaging part 34 moves downward and locks the locking block 43, and the female connector 2 is inserted to the predetermined depth. When the locking block 43 of the female connector 2 completely passes the engaging part 34, the compressed spring 36 begins to release energy. The spring 36 pushes the second end of the lever 33 upward, driving the lever 33 to rotate around the pivot. The engaging part 34 of its first end moves downward and locks onto the locking block 43 of the female connector 2. When it is necessary to disconnect the connection, the operator only needs to manually press down the second ends of the levers 33 on both sides to release the restraint. The continuous pushing force provided by the spring 36 makes the locking state normally closed. Even in a strong vibration environment, as long as the lever 33 is not actively pressed, the connector will not loosen.

[0022] In one embodiment, such as Figure 4 As shown, the limiting component 5 includes a fixed base 51 fixedly disposed on the side of the male connector 1, a connecting arm 52 rotatably connected to the fixed base 51, and a follower 53 disposed at the free end of the connecting arm 52. A slider is also slidably disposed on the follower 53. The connecting arm 52 is rotatably connected to the fixed base 51 fixed to the male connector 1 by a pin or bearing. By rotating the connecting arm 52, it can be rotated to the top or side of the female connector 2, so that the slider can cooperate with the outer wall of the female connector 2. The slider can slide linearly on the follower 53. When limiting, the operator pushes the slider along the follower 53 towards the female connector 2, so that its end is embedded in the groove of the female connector 2. When unlocking, the operator pulls the slider back, so that it is disengaged from the female connector 2, and the limitation is released.

[0023] In one embodiment, such as Figure 2As shown, the mating end faces of the male connector 1 and the female connector 2 are provided with sealing rings. The internal flow channel is a smooth transition straight flow channel. The sealing ring is a double-lip sealing ring with a Y-shaped cross-section. The two lips are respectively interference-fitted with the end face of the male connector 1 and the inner wall of the female connector 2. At the moment when the male and female connectors 2 are mated and locked, the two lips are respectively interference-fitted with the end face of the male connector 1 and the inner wall of the female connector 2. Under zero pressure, the lips have been slightly compressed and rebounded, generating initial contact stress and forming the first basic sealing barrier to prevent leakage under no pressure or low pressure. The fluid pressure will enter the groove inside the Y-shaped ring and act on the back of the lips. Under the push of the fluid pressure, the higher the pressure, the greater the force that the lips are stretched open and pressed against the sealing surface, resulting in a stronger sealing effect. The smooth straight flow channel also reduces the flow resistance.

[0024] The above embodiment discloses a fluid quick connector with low flow resistance and high sealing performance. In this embodiment, the operator aligns the female connector 2 with the male connector 1 and applies axial thrust to insert it. The locking block 43 on the female connector 2 contacts the symmetrical semicircular block on the male connector 1 and slides along its inclined surface, automatically guiding and correcting the position. As the female connector 2 continues to penetrate, its structure begins to press down on the second end of the locking component 3 lever 33. The lever 33 rotates around the pivot, and the engaging part 34 at its first end lifts upward. When the female connector 2 reaches the predetermined depth and the locking block 43 slides completely under the engaging part 34, the spring 36 pushes the second end of the lever 33 upward, driving the engaging part 34 to move downward, locking the locking block 43, tightly pulling the male and female connectors 2 together, uniformly compressing the double lip sealing ring on the mating end face, and rotating the connecting arm 52 of the limiting component 5 above the female connector 2, pushing the slider forward so that its end is engaged in the limiting groove of the female connector 2, preventing accidental loosening due to vibration.

[0025] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A fluid quick connector with low flow resistance and high sealing performance, comprising a male connector (1), wherein the output end of the male connector (1) is further provided with a female connector (2), characterized in that, The male connector (1) is provided with locking components (3) on its upper and lower sides for locking the female connector (2). The locking assembly (3) includes a lever (33), one end of which is provided with a pivot, and the pivot is pivotally connected to the male connector (1); The engaging part (34) is provided at the first end of the lever (33); The elastic pusher (37) acts on the second end of the lever (33) to apply an upward force to the second end; The elastic pusher (37) includes a spring (36) and a mounting sleeve (35), the mounting sleeve (35) being fixed to the male connector (1), the spring (36) being housed in the mounting sleeve (35), and its top end abutting against the bottom of the second end of the lever (33).

2. The fluid quick connector with low flow resistance and high sealing performance according to claim 1, characterized in that, The locking component (3) is mirrored on the upper and lower sides of the male connector (1), and a snap-fit ​​component (4) is provided on the inner wall between the male connector (1) and the female connector (2).

3. The fluid quick connector with low flow resistance and high sealing performance according to claim 2, characterized in that, The snap-fit ​​assembly (4) includes a snap-fit ​​connector (41) fixedly installed on the side of the male connector (1) near the female connector (2). The female connector (2) is provided with snap-fit ​​posts (42) on both sides respectively, and each of the two sets of snap-fit ​​posts (42) is provided with a snap-fit ​​block (43) at one end.

4. A fluid quick connector with low flow resistance and high sealing performance according to claim 3, characterized in that, The outer wall of the locking block (43) is adapted to the inner wall of the locking part (34), and the side of the male connector (1) is also provided with a limiting component (5) to limit the female connector (2).

5. A fluid quick connector with low flow resistance and high sealing performance according to claim 4, characterized in that, The limiting component (5) includes a fixed seat (51) fixedly disposed on the side of the male connector (1), a connecting arm (52) rotatably connected to the fixed seat (51), and a follower (53) disposed on the free end of the connecting arm (52), and a slider is also slidably disposed on the follower (53).

6. A fluid quick connector with low flow resistance and high sealing performance according to claim 3, characterized in that, The card connector (41) consists of two symmetrically arranged semicircular blocks.

7. A fluid quick connector with low flow resistance and high sealing performance according to claim 1, characterized in that, The male connector (1) and the female connector (2) are provided with sealing rings on their mating end faces, and their internal flow channels are smooth transition straight flow channels.

8. A fluid quick connector with low flow resistance and high sealing performance according to claim 7, characterized in that, The sealing ring is a double-lip sealing ring with a Y-shaped cross section. The two lips are respectively interference-fitted with the end face of the male connector (1) and the inner wall of the female connector (2).

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