Anti-falling and anti-dripping device

Abstract

The invention relates to the technical field of agricultural equipment, and discloses an anti-falling and anti-dripping device which comprises a body and a connecting piece detachably buckled with the end of the body, the body is provided with a water inlet channel, an isolation cavity and a water outlet channel which are arranged in the axial direction, and a clamping assembly is installed at the opening end of the water outlet channel; the clamping assembly comprises a clamping seat, an elastic clamping arm, a locking block and a stopping mechanism.

Description

Technical Field

[0001] This application belongs to the field of agricultural equipment technology, specifically relating to an anti-dropping and anti-drip device. Background Technology

[0002] An anti-drip device is a device used to prevent liquids from dripping from interfaces or connections during transportation, use, or storage due to gravity, vibration, or improper operation. In some systems (such as infusion sets, filling equipment, and pipeline connection devices), anti-drip devices not only prevent dripping but also assist in quick installation and disassembly, reducing secondary treatment costs caused by dripping. Currently, various anti-drip devices are mainly available in fixed and detachable designs and are used in infusion, chemical transportation, food production, and other liquid transfer devices. Their basic working principle is usually to use mechanical structures (such as elastic clamps, threaded connections, special buckles, or sealing interfaces) to seal and fix the liquid passage.

[0003] While existing anti-drip devices are effective in preventing liquid leaks, they still have some technical shortcomings in practical applications. Some current anti-drip devices rely primarily on rubber clamps, elastic fasteners, or single mechanical snap-fits for connection. Because these components have relatively low fixing force, they are prone to loosening under external vibration, handling, or accidental impact, causing the entire anti-drip device to detach from the main device and thus fail to prevent dripping. During long-term use, especially under frequent disassembly and assembly or harsh conditions such as high temperature and humidity, the fixing structure is prone to failure due to material aging or fatigue. For example, some plastic anti-drip devices may deform after high temperatures or prolonged stress, reducing the seal between the device and the interface and leading to detachment. Summary of the Invention

[0004] This application provides an anti-drop and anti-drip device to solve the technical problem that the connection part of the anti-drip device becomes loose, causing the entire anti-drip device to detach from the main device.

[0005] The technical solution adopted in this application is as follows: An anti-dropping and anti-drip device includes a body and a connector that can be detachably fastened to the end of the body. The body has an axially arranged water inlet channel, an isolation chamber, and an outlet channel. The opening end of the outlet channel is equipped with a locking assembly, which includes a locking seat, an elastic locking arm, a locking block, and a stop mechanism. The card holder is fitted onto the opening end of the water outlet channel, and the card holder has several hinge slots equidistantly spaced around its outer circumference. The elastic arm is hinged to the card seat at the hinge groove to form a thin-walled hinge area. Its root is connected to the card seat through a thin-walled structure. It extends inward from the hinge area to form an inwardly protruding hook part. The outer circumferential surface of the connector is provided with an annular groove to accommodate the hook part, which engages into the annular groove of the connector when engaged. The card holder has several guide grooves on its outer periphery, and a locking block is slidably connected in the guide groove. The inner circumferential surface of the locking block is engaged with the outer side of the elastic card arm. The stop mechanism is located in the guide groove and adjacent to the locking block. The stop mechanism includes, along the axial direction, a sleeve, a handle, a cam, and a connecting rod in sequence. The sleeve is fitted into the guide groove and fixedly engaged with the card seat; The handle is located at one end of the sleeve and passes through the card seat. The handle has several serrated protrusions and several rectangular protrusions on its circumference. The cam is rotatably connected to the handle via a rotating shaft, and it has multiple ratchet teeth with inclined surfaces in its circumference; One end of the connecting rod is fixedly connected to the cam, and the other end is fixedly connected to the locking block.

[0006] By adopting the above technical solution, the card holder and the elastic card arm work together to achieve smooth rebound and rapid locking during insertion, ensuring that the card hook is firmly engaged in the connecting ring groove, improving the positioning accuracy during installation. The thin-walled hinge and the elastic card arm are integrally molded, with no additional connection between the parts, simplifying the part structure and significantly improving assembly efficiency. The elastic card arm is made of engineering plastic with excellent elasticity and fatigue performance, suitable for repeated insertion and removal, and maintaining locking performance for a long time.

[0007] The anti-drop and anti-slip device can simultaneously achieve reliable fixation of containers or fittings and effective collection of liquid residue. On the one hand, the supporting components and the anti-drop components work together to form a firm constraint on the container or fitting, preventing slippage under external forces and ensuring the safety and stability of the device during use. On the other hand, the anti-drip component located below the device can promptly collect residual droplets and guide them to the storage tank or collection tank when the container or fitting is released or switched, effectively avoiding equipment contamination and resource waste caused by liquid dripping, and improving overall cleanliness and economy.

[0008] Optionally, the guide groove is two symmetrical guide grooves arranged axially on the outer periphery of the card seat, and the locking block is provided with a guide protrusion at the corresponding position of the guide groove to slide in the guide groove.

[0009] By adopting the above technical solution, the locking block slides smoothly along the guide groove when the user pushes the handle or pushes the sleeve. The guide protrusion ensures that the sliding path is always coaxial with the card seat. During the sliding process, there is no meshing or obstruction between the guide groove and the locking block surface. Even if there are small particles, they can be discharged along the groove to avoid jamming. At the same time, the double guide groove layout makes the locking block evenly stressed when sliding to the end point, improving the motion stability in a vibration environment.

[0010] Optionally, the number of hinge slots is three or more, and the elastic locking arms are evenly distributed along the circumference of the locking seat.

[0011] By adopting the above technical solution, when the connector is gradually pushed forward, each elastic locking arm flexes inward synchronously and engages one by one to form a ring lock. During the pull-out operation, the elastic locking arms rebound almost simultaneously, driving the connector to move out smoothly and preventing single-point hook residue. The continuous bending-rebound action of the locking arms has been optimized to adapt to repeated insertion and removal conditions and maintain stable performance.

[0012] Optionally, the connector is threaded to the body and has an outwardly protruding limiting shoulder formed on its outer end face.

[0013] By adopting the above technical solution, when the user tightens the connector, the limiting shoulder gradually contacts the end face of the main body, and the rotational movement automatically stops after the shoulder is physically stopped. Under vibration or impact, the contact surface between the limiting shoulder and the end face of the main body generates a small relative motion to absorb energy through the micro claw and barb structure, further suppressing loosening. When the shoulder contact is completed, the user can perceive the rotation stop state through vision or touch, without the need for measurement methods.

[0014] Optionally, the outer side of the hook portion is engaged with the inner side of the annular groove of the connector.

[0015] By adopting the above technical solution, during the insertion process, the hook part and the annular groove engage radially, and then achieve surface sealing through axial micro-movement to form a water-resistant seal. Under external vibration or water flow impact, the anti-rotation pawl engagement action can resist relative sliding and keep the hook part in a constant position. During the reciprocating vibration after engagement, the mating surface can still maintain slight compression and is not easy to loosen.

[0016] Optionally, an annular stop protrusion is provided between the connecting rod and the locking block, and a return spring is provided between the stop protrusion and the inner wall of the sleeve.

[0017] Optionally, the inclined surface of the ratchet engages with the serrated protrusion on the handle and is locked in the locking groove on the inner wall of the sleeve.

[0018] By adopting the above technical solution, when the user rotates the handle, the ratchet cam drives the connecting rod to advance step by step along the axial direction. With each rotation, the positioning lock can be heard and felt. Under load, the inclined surface of the ratchet bears the force and meshes tightly with the tooth surface of the handle, preventing the handle from rotating in the opposite direction. During the rotation of the handle, the micro-jumping locking between the teeth gives the operator clear gear feedback.

[0019] Alternatively, the rectangular protrusion on the handle slides within the sliding groove of the sleeve.

[0020] By adopting the above technical solution, when the handle is pressed or rotated, the rectangular protrusion is guided along the sliding groove. Whether it moves axially or slightly radially, it always maintains a stable trajectory. When the operator adjusts the locking position, the handle swings slightly to fit the curve of the palm, improving grip comfort. During the repeated insertion, removal and rotation of the handle, the surface of the sliding groove is treated with a special hardening process to reduce wear.

[0021] Optionally, a movable rod is provided radially at the top of the water outlet channel of the main body, with a gasket for sealing the water outlet channel fixed at its lower end, and its upper end connected to the pressure cap via a compression spring, extending from one end of the pressure cap to the outer end of the pressure cap.

[0022] By adopting the above technical solution, when the user rotates the gland, the movable rod slides radially and drives the gasket to gradually tighten, adjusting the sealing preload in real time. Under different temperatures, humidity and medium pressures, the dynamic cooperation between the gasket and the movable rod can compensate for deformation and maintain stability and prevent dripping. When disassembling, the movable rod and the gland can be pulled out together, driving the sealing gasket to come out, which is convenient for quick replacement. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a three-dimensional schematic diagram of an anti-dropping and anti-drip device according to this application; Figure 2 This is a top view of an anti-dropping and anti-drip device according to this application; Figure 3 This is a cross-sectional view of an anti-dropping and anti-drip device according to this application; Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle; Figure 5 for Figure 3 Enlarged view of a section at point B in the middle; Figure 6 This is a three-dimensional schematic diagram of a stop mechanism for an anti-dropping and anti-drip device according to this application; Figure 7 This is a cross-sectional view of the anti-dropping and anti-drip device stop mechanism of this application.

[0024] 1. Body; 2. Connector; 21. Annular groove; 22. Limiting shoulder; 3. Card seat; 31. Hinge groove; 32. Guide groove; 4. Elastic locking arm; 5. Locking block; 6. Stopping mechanism; 61. Sleeve; 611. Locking groove; 612. Sliding groove; 62. Handle; 621. Serrated protrusion; 622. Rectangular protrusion; 63. Cam; 631. Ratchet; 64. Linkage rod; 7. Stopping protrusion; 8. Return spring; 9. Water inlet channel; 10. Isolation chamber; 11. Water outlet channel; 12. Movable rod; 13. Gasket; 14. Compression spring; 15. Pressure cap. Detailed Implementation

[0025] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0027] An anti-dropping and anti-drip device includes a body 1 and a connector 2 that can be detachably fastened to the end of the body 1. The body 1 has an axially arranged water inlet channel 9, an isolation chamber 10, and a water outlet channel 11. The opening end of the water outlet channel 11 is equipped with a locking assembly, which includes a locking seat 3, an elastic locking arm 4, a locking block 5, and a stop mechanism 6. The card holder 3 is fitted onto the opening end of the water outlet channel 11, and the card holder 3 has several hinge slots 31 equidistantly arranged on its outer circumference. The elastic locking arm 4 is hinged to the locking seat 3 at the hinge groove 31 to form a thin-walled hinge area. Its root is connected to the locking seat 3 as a whole through the thin-walled structure. It extends inward from the hinge area to form an inwardly protruding locking hook. The outer peripheral surface of the connector 2 is provided with an annular groove 21 for accommodating the hook portion, which engages into the annular groove 21 of the connector 2 when engaged. The card holder 3 has several guide grooves 32 on its outer periphery, and a locking block 5 is slidably connected in the guide grooves 32. The inner circumferential surface of the locking block 5 cooperates with the outer side of the elastic card arm 4. The stop mechanism 6 is located in the guide groove 32 and adjacent to the locking block 5. The stop mechanism 6 includes, along the axial direction, a sleeve 61, a handle 62, a cam 63, and a connecting rod 64 in sequence. The sleeve 61 is fitted into the guide groove 32 and is fixedly engaged with the card seat 3; The handle 62 is located at one end of the sleeve 61 and passes through the card seat 3. One end of the handle 62 is provided with several serrated protrusions 621 and several rectangular protrusions 622 on the circumference. Cam 63 is rotatably connected to handle 62 via a pivot, and has multiple ratchet teeth 631 with inclined surfaces in its circumference; One end of the connecting rod 64 is fixedly connected to the cam 63, and the other end is fixedly connected to the locking block 5.

[0028] In actual operation, it operates as follows: When the installer pushes the connector 2 to the port of the body 1, the elastic locking arm 4 inside the locking seat 3 flexes inward along the annular channel under the guidance of the locking seat 3, and the hook part engages into the annular groove 21 on the outer periphery of the connector 2. Subsequently, the elastic locking arm 4 quickly rebounds with the help of the thin-walled hinge, and the hook part is tightly attached to the groove wall to complete the locking, and the locking seat 3 and the connector 2 form a stable mechanical lock. Then, the user pushes the handle 62 axially, and the rectangular protrusion 622 on the handle 62 slides linearly in the sliding groove 612 on the inner wall of the sleeve 61. The connecting rod 64 and the stop protrusion 7 move forward along the guide groove 32, and the return spring 8 is compressed at the same time. At this time, the ratchet 631 on the cam 63 engages with the sawtooth protrusion 621 on the handle 62. When the user releases the pushing force, the return spring 8, with the help of the inclined surface of the cam 63 and the sawtooth, causes the handle 62 and the connecting rod 64 to retract in opposite directions. During the retraction, the ratchet 631 of the cam 63 self-locks into the locking groove 611 on the inner wall of the sleeve 61, the stop protrusion 7 exits the gap, the handle 62 returns to the initial position, the stop mechanism 6 resets and completes the entire locking motion. Since the locking groove 611 is located in the middle of the sliding groove 612, when force is applied again, the ratchet 631 and the inclined surface of the sawtooth protrusion 621 still cooperate. This time, the ratchet 631 can slide out along the sliding groove 612, thereby canceling the locking of the locking block 5.

[0029] Furthermore, the guide groove 32 consists of two symmetrical guide grooves arranged axially on the outer periphery of the card holder 3, and the locking block 5 is provided with a guide protrusion at the corresponding position of the guide groove to slide in the guide groove.

[0030] After the insertion is completed, when the user rotates or pushes the sleeve 61, the guide protrusion on the locking block 5 slides at a constant speed in the symmetrical guide groove 32 on the outer periphery of the card seat 3. When the protrusion reaches the chamfer at the bottom of the groove, it will bounce slightly, providing tactile feedback to the user. At the same time, the stop mechanism 6 automatically stops along the side wall of the groove, ensuring that the locking block 5 always maintains the correct engagement position with the card arm.

[0031] Furthermore, the number of hinge slots 31 is three or more, and the elastic locking arms 4 are evenly distributed along the circumference of the locking seat 3.

[0032] As connector 2 is gradually inserted, three (or more) equally spaced elastic locking arms 4 bend radially inward simultaneously, and the front locking hooks engage sequentially to form a ring-shaped multi-point locking. When the user pulls out connector 2, all locking arms rebound simultaneously through thin-walled hinges within a similar time frame, causing connector 2 to disengage smoothly.

[0033] Furthermore, the connector 2 is threaded to the body 1, and a limiting shoulder protruding outward is formed on its outer end face.

[0034] When rotating connector 2, the external thread engages with the internal thread of body 1, smoothly pushing connector 2 along the axial direction until the limiting shoulder contacts the end face of body 1 and stops. When loosening, the shoulder first disengages from the end face of body 1, and the user can feel the sudden change in torque by hand.

[0035] Furthermore, the outer side of the hook portion is in a mating engagement state with the inner side of the annular groove 21 of the connector 2.

[0036] When the connector 2 is inserted, the hook portion slides radially into the annular groove 21. Then, the connector 2 is slightly pushed towards the body 1, so that the hook fits against the inner wall of the groove, instantly forming a mechanical lock and compression seal. When an external pulling force is applied, the hook and the groove are tightly engaged to prevent it from being pulled out.

[0037] Furthermore, an annular stop protrusion 7 is provided between the connecting rod 64 and the locking block 5, and a return spring 8 is provided between the stop protrusion 7 and the inner wall of the sleeve 61.

[0038] Furthermore, the inclined surface of the ratchet 631 engages with the serrated protrusion 621 on the handle 62 and is locked in the locking groove 611 on the inner wall of the sleeve 61.

[0039] When the handle 62 is pushed, the ratchet 631 rotates coaxially with the connecting rod 64. The ratchet 631 pushes the connecting rod 64 forward axially step by step, and the locking block 5 stops laterally at each position. When the handle 62 is released, the ratchet 631 self-locks to prevent the connecting rod 64 from moving backward until the force is applied again to the reset position.

[0040] Furthermore, the rectangular protrusion 622 on the handle 62 slides within the sliding groove 612 of the sleeve 61.

[0041] When the user pushes the handle 62 to move along the axis of the card holder 3, the rectangular protrusion 622 of the handle 62 acts as a linear guide in the sliding groove 612 of the sleeve 61.

[0042] Furthermore, a movable rod 12 is provided radially at the top of the water outlet channel 11 of the main body 1. Its lower end is fixed to a gasket 13 for sealing the water outlet channel 11, and its upper end is connected to the pressure cover 15 through a compression spring 14, extending from one end of the pressure cover 15 to the outer end of the pressure cover 15.

[0043] The main body 1 has a hollow, raised section forming an isolation cavity 10. A water inlet channel 9 is axially opened at the raised section, allowing water to enter the isolation cavity 10 and connect with the suction end of an L-shaped water outlet channel 11. A pressure cap 15 is located at the upper end of the water outlet channel 11, with a movable rod 12 passing through it. A compression spring 14 is sandwiched between the pressure cap 15 and the movable rod 12, pressing a gasket 13 at the lower end of the movable rod 12 tightly against the inner opening of the water outlet channel 11, achieving a sealed closure. The water pressure inside the isolation cavity 10 increases. When the water pressure overcomes the spring preload, the upward pressure pushes the movable rod 12, causing the gasket 13 to disengage from the inner opening of the water outlet channel 11, allowing water to flow out through the L-shaped water outlet channel 11. When external water use stops or the water pressure drops below the spring preload, the return spring 8 presses the movable rod 12 and the gasket 13 against the water outlet channel 11, restoring the sealed closure.

[0044] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0045] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0046] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A drip-proof device, comprising a body (1) and a connector (2) detachably fastened to the end of the body (1), characterized in that: The main body (1) has an axially arranged water inlet channel (9), an isolation chamber (10), and a water outlet channel (11). The opening end of the water outlet channel (11) is equipped with a locking assembly, which includes a locking seat (3), an elastic locking arm (4), a locking block (5), and a stop mechanism (6). The card holder (3) is fitted onto the opening end of the water outlet channel (11), and the card holder (3) has several hinge slots (31) equidistantly arranged on its outer circumference. The elastic arm (4) is hinged to the seat (3) at the hinge groove (31) to form a thin-walled hinge area. Its root is connected to the seat (3) through a thin-walled structure. It extends inward from the hinge area to form an inwardly protruding hook part. The outer circumferential surface of the connector (2) is provided with an annular groove (21) to accommodate the hook part. The hook part is engaged in the annular groove (21) of the connector (2) when engaged. The outer circumference of the seat (3) is provided with several guide grooves (32). The locking block (5) is slidably connected in the guide groove (32). The inner circumferential surface of the locking block (5) is engaged with the outer surface of the elastic arm (4). The stop mechanism (6) is placed in the guide groove (32) and adjacent to the locking block (5). The stop mechanism (6) includes a sleeve (61), a handle (62), a cam (63) and a connecting rod (64) in sequence along the axial direction. The sleeve (61) is fitted inside the guide groove (32) and fixedly engaged with the card seat (3); The handle (62) is located at one end of the sleeve (61) and passes through the card seat (3). One end of the handle (62) is provided with a number of serrated protrusions (621) and a number of rectangular protrusions (622) on the circumference. The cam (63) is rotatably connected to the handle (62) via a rotating shaft, and has multiple ratchet teeth (631) with inclined surfaces in its circumferential direction. One end of the connecting rod (64) is fixedly connected to the cam (63), and the other end is fixedly connected to the locking block (5).

2. The anti-dropping and anti-drip device according to claim 1, characterized in that: The guide groove (32) consists of two symmetrical guide grooves arranged axially on the outer periphery of the card seat (3), and the locking block (5) is provided with a guide protrusion at the corresponding position of the guide groove to slide in the guide groove.

3. The anti-dropping and anti-drip device according to claim 1, characterized in that: The number of the hinge slots (31) is three or more, and the elastic locking arms (4) are evenly distributed along the circumference of the locking seat (3).

4. The anti-dropping and anti-drip device according to claim 1, characterized in that: The connector (2) is threaded to the body (1) and has an outwardly protruding limiting shoulder on its outer end face.

5. The anti-dropping and anti-drip device according to claim 1, characterized in that: The outer side of the hook part is engaged with the inner side of the annular groove (21) of the connector (2).

6. The anti-dropping and anti-drip device according to claim 1, characterized in that: An annular stop protrusion (7) is provided between the connecting rod (64) and the locking block (5), and a return spring (8) is provided between the stop protrusion (7) and the inner wall of the sleeve (61).

7. The anti-dropping and anti-drip device according to claim 1, characterized in that: The inclined surface of the ratchet (631) of the cam (63) engages with the serrated protrusion (621) on the handle (62) and is engaged in the locking groove (611) on the inner wall of the sleeve (61).

8. The anti-dropping and anti-drip device according to claim 1, characterized in that: The rectangular protrusion (622) on the handle (62) slides within the sliding groove (612) of the sleeve (61).

9. The anti-dropping and anti-drip device according to claim 1, characterized in that: The water outlet channel (11) of the main body (1) is provided with a movable rod (12) in the radial direction at the top. The lower end of the rod is fixed to a gasket (13) for sealing the water outlet channel (11), and the upper end of the rod is connected to the cover (15) through a compression spring (14) and extends from one end of the cover (15) to the outer end of the cover (15).

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