A mobile air conditioner quick connector anti-loosening compression device

Abstract

The application provides a mobile air conditioner quick connector anti-loosening compression device, and belongs to the technical field of mobile air conditioners. The mobile air conditioner quick connector anti-loosening compression device comprises a quick connector base, a compression self-locking piece and a driving piece. The compression self-locking piece comprises a worm wheel, a worm and a locking compression rod. The worm wheel is rotatably installed on the side of the quick connector base. The worm is engaged with the worm wheel. The lower end of the locking compression rod is fixedly connected with the worm wheel. The upper end of the locking compression rod is fixedly provided with a cushion block. The driving piece comprises a toothed disc and a gear. The gear is engaged with the toothed disc. The gear is coaxially and fixedly connected with the worm. The mechanical self-locking characteristic of the worm wheel and the worm is utilized. The anti-loosening performance is excellent. The device is suitable for complex working conditions. The radial locking of the gear part on the toothed disc is matched. The double insurance of anti-loosening is formed. Even under the high-frequency vibration or external force pulling of the mobile air conditioner, the joint can still be stably connected, and loosening is avoided.

Description

Technical Field

[0001] This application relates to the field of portable air conditioners, and more specifically, to a quick-connect anti-loosening clamping device for portable air conditioners. Background Technology

[0002] Currently, portable air conditioners work on a similar principle to stationary air conditioners, absorbing heat from the air by compressing refrigerant and then expelling the heat outdoors through an internal circulation system. Under the action of the compressor, the refrigerant absorbs heat in the evaporator and releases heat in the condenser, completing a refrigeration cycle. The difference is that portable air conditioners need to expel heat outdoors through an exhaust duct. Common connection methods between exhaust ducts and portable air conditioners include threaded connections and quick-connect connections. Threaded connections use threads to tightly connect the connector to the duct, providing high connection strength and sealing, but they can loosen due to vibration. Quick-connect connections are more convenient, requiring only the connector to be inserted into the corresponding interface for a quick connection, but they can result in a false connection, causing the connector to fall off. The existing technical solutions mentioned above have the following drawbacks: quick-connect fittings for portable air conditioning pipes are prone to loosening and leakage due to vibration or external pulling. Utility Model Content

[0003] To overcome the above shortcomings, this application provides a quick-connect anti-loosening clamping device for portable air conditioners, which aims to improve the problem that traditional quick-connects for portable air conditioner pipelines are prone to loosening and leakage due to vibration and external pulling.

[0004] This application provides a mobile air conditioner quick connector anti-loosening clamping device, including a quick connector base, a clamping self-locking component, and a driving component; The self-locking clamping component includes a worm gear, a worm, and a locking lever. The worm gear is rotatably mounted on the side of the quick connector base. The worm meshes with the worm gear. The lower end of the locking lever is fixedly connected to the worm gear, and a pad is fixedly attached to the upper end of the locking lever. The driving component includes a gear plate and a gear. The gear meshes with the gear plate, and the gear is coaxially fixedly connected to the worm.

[0005] In a preferred embodiment of this utility model, a locking cover is fixed to the outer wall of the quick connector base, the worm gear is rotatably installed inside the locking cover, and the lower end of the worm is rotatably connected to the locking cover.

[0006] In a preferred embodiment of this utility model, the quick connector base is fixed with a support, the support is rotatably mounted with a rotating shaft, the worm gear is coaxially and fixedly connected to the rotating shaft, and the lower end of the locking pressure rod is fixedly connected to the rotating shaft.

[0007] In a preferred embodiment of this utility model, the pad includes an elastic clip and a rubber block. The elastic clip is detachably fixed to one side of the elastic clip, and the elastic clip is fixedly connected to the upper end of the locking pressure rod.

[0008] In a preferred embodiment of this utility model, the gear disc is rotatably disposed on the outer surface of the quick connector base, and a rotating part is rotatably sleeved on the outer surface of the quick connector base, the rotating part being coaxially fixed with the gear disc.

[0009] In a preferred embodiment of this utility model, the outer surface of the rotating part is provided with anti-slip texture, and a reset member is connected between the inner wall of the rotating part and the outer surface of the quick connector base.

[0010] In a preferred embodiment of this utility model, at least two self-locking clamping components are provided, and multiple self-locking clamping components are arranged at equal intervals in a ring along the outer circumference of the quick connector base. Multiple gears are provided in one-to-one correspondence with the worm gear.

[0011] In a preferred embodiment of this utility model, the rotating part is an annular body, the resetting member is a torsion spring, the gear plate is disposed inside the locking cover, and the outer diameter of the rotating part is the same as the outer diameter of the locking cover.

[0012] In a preferred embodiment of this utility model, a toothed part is slidably connected inside the locking cover, and a pull rod is fixed to the toothed part. One end of the pull rod extends to the outside of the locking cover. A compression spring is connected between the toothed part and the inner wall of the locking cover. The compression spring pushes the toothed part to slide and engage with the toothed disc, thereby achieving radial locking of the toothed disc.

[0013] In a preferred embodiment of this utility model, the quick connector base is fitted with a mating tube, the inner wall of the mating port of the mating tube is fixed with a groove, and the outer surface of the mating tube is provided with a groove, which engages with the pad block. Beneficial effects

[0014] 1. Utilizing the mechanical self-locking characteristics of worm gears, it has excellent anti-loosening performance and adapts to complex working conditions. Combined with the radial locking of the teeth on the gear plate, it forms a "double insurance against loosening". Even under high-frequency vibration or external force pulling of a portable air conditioner, the joint can still maintain a stable connection and avoid loosening.

[0015] 2. By replacing the pads and slots of different specifications, it can be adapted to various pipes with diameters of 16-50mm, covering the pipe diameter range of mainstream portable air conditioners. There is no need to design separate connectors for different models of air conditioners, reducing production costs and inventory pressure.

[0016] 3. Quick one-handed operation: With the anti-slip texture design of the rotating part and the assistance of the reset part, the entire process of "unlocking-rotating-locking" can be completed by one person with one hand. The docking time is fast, which is especially suitable for the quick disassembly and assembly needs during the installation and maintenance of portable air conditioners. While ensuring the reliability and sealing of the connection, it significantly improves the convenience of operation and effectively solves the problem of loosening of the joints caused by vibration and frequent movement of portable air conditioners. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the anti-loosening clamping device for the mobile air conditioner quick connector provided in the embodiments of this application; Figure 2 A three-dimensional structural diagram of the driving component provided for an embodiment of this application; Figure 3 A three-dimensional structural diagram of the self-locking clamping component provided in the embodiments of this application; Figure 4 A three-dimensional structural diagram of the rotating part provided for an embodiment of this application; Figure 5 A cross-sectional perspective view of the locking cover provided in the embodiments of this application.

[0019] In the diagram: 100, quick connector base; 110, locking cover; 111, gear; 112, pull rod; 113, compression spring; 120, support; 121, rotating shaft; 130, connecting tube; 131, slot; 300, self-locking clamp; 310, worm gear; 320, worm; 330, locking lever; 340, pad; 341, elastic clip; 342, rubber block; 500, driving component; 510, gear plate; 520, gear; 530, rotating part; 540, reset component. Detailed Implementation

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0023] Please see Figures 1-5 This utility model provides a quick-connect anti-loosening clamping device for mobile air conditioners, including a quick-connect base 100, a clamping self-locking component 300, and a driving component 500. The quick-connect base 100 is a tubular base made of brass, with one end being a threaded interface (thread specification G1 / 2"-G2") for connecting the air conditioner unit's piping, and the other end being a socket for inserting a connecting tube 130 (the inner diameter is 0.5-1mm smaller than the outer diameter of the connecting tube 130). A locking cover 110 (stamped from Q235 steel plate, wall thickness 2mm) is welded to the outer wall along the circumferential direction, and the inside of the locking cover 110 forms a cavity to accommodate the transmission components. An annular support 120 (width 20mm) is welded to the outer wall of the quick-connect base 100 inside the locking cover 110, and a rotating shaft 121 (diameter 8-12mm, 45# steel heat-treated) is correspondingly mounted on the support 120 via a bearing.

[0024] The connecting tube 130 is made of copper or aluminum alloy, with an O-ring groove (fluororubber material, 2mm wire diameter) built into the insertion end for forming a seal with the outer wall of the socket of the quick connector base 100 (sealing pressure ≥0.6MPa); the groove 131 is a locking groove (8mm wide, 2mm deep) for engaging with the pad 340 of the self-locking component 300 to achieve mechanical locking.

[0025] The self-locking clamping component 300 includes a worm gear 310, a worm 320, and a locking rod 330. The worm gear 310 is rotatably mounted on the side of the quick connector base 100. The worm 320 meshes with the worm gear 310. The lower end of the locking rod 330 is fixedly connected to the worm gear 310, and a pad 340 is fixedly attached to the upper end of the locking rod 330. Three sets of self-locking clamping components 300 are arranged circumferentially at equal intervals along the outer circumference of the quick connector base 100. Each set includes a worm gear 310, a worm 320, a locking rod 330, and a pad 340. The worm gear 310 is coaxially and interference-fitted with the rotating shaft 121 and rotatably mounted inside the locking cover 110. The worm gear 310 meshes with the worm 320 for transmission. Utilizing the self-locking characteristics of the worm gear (self-locking condition: worm 320 lead angle ≤ equivalent friction angle), it ensures no reverse loosening after locking. The worm 320... The locking rod 330 (50-70mm in length) is rotatably mounted on the upper and lower end walls of the locking cover 110 via deep groove ball bearings at both ends, with the lower end coaxially connected to the gear 520 via a key; the locking rod 330 is a high-strength alloy rod (6-8mm in diameter, 100-150mm in length), with its lower end welded to the rotating shaft 121 and rotating synchronously with the worm gear 310, and its upper end bent towards the axis of the quick connector base 100; the elastic clip 341 is made of 65Mn spring steel stamped (1mm thick), with a "U" shaped structure, and is detachably fixed to the upper end of the locking rod 330 by internal hexagonal screws; the rubber block 342 is fixed to the inside of the elastic clip 341 by vulcanization process, and its surface has an arc-shaped surface (radius consistent with the bottom radius of the locking groove) that matches the locking groove of the docking tube 130, which increases friction (static friction coefficient ≥0.8) and avoids damage to the pipe by rigid contact.

[0026] The drive component 500 includes a gear disk 510 and a gear 520. The gear 520 meshes with the gear disk 510 and is coaxially and fixedly connected to the worm gear 320. The gear disc 510 is rotatably mounted on the annular step on the outer wall of the quick connector base 100 via a thrust bearing, located below the locking cover 110, and meshes simultaneously with three gears 520 to achieve synchronous operation of multiple sets of clamping self-locking parts 300 driven by a single power source; the rotating part 530 is an annular body injection molded from engineering plastic (PA6+30% glass fiber), with an inner diameter that is clearance-fitted with the outer wall of the quick connector base 100 (clearance 0.1-0.2mm), and is coaxially fixed to the gear disc 510 by screws, with diamond-shaped anti-slip texture (texture height 0.5mm) rolled on the outer surface for easy manual rotation operation; the reset part 540 is a torsion spring (diameter 1.2mm, material 60Si2Mn), one end of which is engaged in the slot 131 on the inner wall of the rotating part 530, and the other end is fixed to the positioning pin on the outer wall of the quick connector base 100. In the initial state, the torsion spring is in a pre-tightened state, providing a reset torque (torque value 5-8N·m) for the rotating part 530.

[0027] In a specific embodiment of this utility model, a locking cover 110 is fixed to the outer wall of the quick connector base 100, the worm gear 310 is rotatably installed inside the locking cover 110, and the lower end of the worm 320 is rotatably connected to the locking cover 110.

[0028] In a specific embodiment of this utility model, the quick connector base 100 is fixed with a support 120, the support 120 is rotatably mounted with a rotating shaft 121, the worm gear 310 is coaxially and fixedly connected to the rotating shaft 121, and the lower end of the locking pressure rod 330 is fixedly connected to the rotating shaft 121.

[0029] In a specific embodiment of this utility model, the pad 340 includes an elastic clip 341 and a rubber block 342. The elastic clip 341 is detachably fixed to one side of the elastic clip 341, and the elastic clip 341 is fixedly connected to the upper end of the locking rod 330.

[0030] In a specific embodiment of this utility model, the gear disc 510 is rotatably disposed on the outer surface of the quick connector base 100, and a rotating part 530 is rotatably sleeved on the outer surface of the quick connector base 100, and the rotating part 530 is coaxially fixed with the gear disc 510.

[0031] In a specific embodiment of this utility model, the outer surface of the rotating part 530 is provided with anti-slip texture, and a reset member 540 is connected between the inner wall of the rotating part 530 and the outer surface of the quick connector base 100.

[0032] In a specific embodiment of this utility model, at least two self-locking clamping components 300 are provided, and multiple self-locking clamping components 300 are arranged at equal intervals in a ring along the outer circumference of the quick connector base 100. Multiple gears 520 and worm gears 320 are provided in one-to-one correspondence.

[0033] In a specific embodiment of this utility model, the rotating part 530 is an annular body, the resetting member 540 is a torsion spring, the toothed disc 510 is disposed inside the locking cover 110, and the outer diameter of the rotating part 530 is the same as the outer diameter of the locking cover 110.

[0034] In a specific embodiment of this utility model, a toothed part 111 is slidably connected inside the locking cover 110, and a pull rod 112 is fixed to the toothed part 111. One end of the pull rod 112 extends to the outside of the locking cover 110. A compression spring 113 is connected between the toothed part 111 and the inner wall of the locking cover 110. The compression spring 113 pushes the toothed part 111 to slide and engage with the toothed disc 510, thereby achieving radial locking of the toothed disc 510. The toothed part 111 is an arc-shaped rack that matches the internal teeth of the gear disk 510 and is slidably installed in the guide groove on the inner wall of the locking cover 110 (fitting clearance 0.05-0.1mm); one end of the pull rod 112 (diameter 5mm) is welded to the toothed part 111, and the other end extends to the outside through the through hole in the side wall of the locking cover 110, with a pull ring installed at the end; the compression spring 113 is sleeved on the outside of the pull rod 112, with both ends abutting against the toothed part 111 and the inner wall of the locking cover 110 respectively. Under normal conditions, it pushes the toothed part 111 to mesh with the gear disk 510, thereby achieving radial locking of the gear disk 510 and preventing the gear disk 510 from rotating due to misoperation or vibration.

[0035] In a specific embodiment of this utility model, the quick connector base 100 is fitted with a docking tube 130, the inner wall of the docking port of the docking tube 130 is fixed with a slot 131, the outer surface of the docking tube 130 is provided with a slot 131, and the slot 131 is engaged with the pad block 340.

[0036] Working principle of the anti-loosening clamping device for the quick-connect fitting of the portable air conditioner: docking preparation phase 1. In the initial state, the reset part 540 is in the pre-tightened state, the rotating part 530 is in the initial position, and the locking rod 330 is in the pressed state. Rotate the rotating part 530 clockwise (the anti-slip texture increases the friction of the hand and avoids slipping). By rotating the rotating part 530, the locking rod 330 is in the open state (the angle with the axis of the quick connector base 100 is 45°). The pad 340 is away from the center of the connector, which makes it easier to insert the connecting tube 130. 2. The teeth 111 of the safety locking assembly engage with the gear disk 510 under the push of the compression spring 113, restricting the rotation of the gear disk 510 and ensuring that the device remains stable when not in operation.

[0037] Intubation and docking stage 1. Manually pull the lever 112 of the safety locking assembly to overcome the spring force of the compression spring 113, causing the tooth 111 to separate from the gear plate 510 and releasing the lock on the gear plate 510; 2. Insert the mating tube 130 into the socket of the quasi-quick connector base 100 and push it axially until the end of the mating tube 130 abuts against the limiting step. At this time, the sealing ring of the mating tube 130 and the socket of the base form an initial seal, and the locking groove is located at the pressing point of the pad 340.

[0038] Compression and locking phase 1. Manually pull the lever 112 of the safety locking component to overcome the elastic force of the compression spring 113, causing the tooth 111 to separate from the gear plate 510, releasing the lock on the gear plate 510, and the reset component 540 drives the gear plate 510 to rotate synchronously. 2. The gear disk 510 drives three gears 520 to rotate synchronously (speed ratio 3:1), and the gears 520 drive the worm gear 320 to rotate. 3. The worm 320 meshes with the worm wheel 310 to drive the rotation of the worm 320 into the rotation of the worm wheel 310. The worm wheel 310 drives the rotating shaft 121 and the locking rod 330 to swing upward around the center of the rotating shaft 121. 4. The pad 340 at the upper end of the locking lever 330 moves closer to the locking groove of the mating tube 130. When the rotating part 530 rotates to the limit position (about 60°), the arc-shaped protrusion of the rubber block 342 is completely inserted into the locking groove, and the elastic clamp 341 produces a slight elastic deformation (deformation amount 0.2-0.3mm), forming a pre-tightening force (pre-tightening force of a single pad 340 is 30-50N). 5. Multiple sets of self-locking clamping elements 300 apply radial pressure evenly along the circumference (total clamping force 90-150N) to firmly lock the mating tube 130 into the quick connector base 100, while the sealing ring is compressed to achieve a reliable seal.

[0039] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of 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 principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

Claims

1. A quick-connect anti-loosening clamping device for portable air conditioners, characterized in that, include Quick connector base (100); A self-locking clamping component (300) is provided, comprising a worm gear (310), a worm (320), and a locking lever (330). The worm gear (310) is rotatably mounted on the side of the quick connector base (100). The worm (320) meshes with the worm gear (310). The lower end of the locking lever (330) is fixedly connected to the worm gear (310), and a pad (340) is fixed to the upper end of the locking lever (330). The driving component (500) includes a gear disk (510) and a gear (520), the gear (520) meshing with the gear disk (510) and the gear (520) being coaxially and fixedly connected to the worm (320).

2. The anti-loosening clamping device for a portable air conditioner quick connector according to claim 1, characterized in that, The quick connector base (100) has a locking cover (110) fixed on its outer wall. The worm gear (310) is rotatably installed inside the locking cover (110). The lower end of the worm (320) is rotatably connected to the locking cover (110).

3. The anti-loosening clamping device for a portable air conditioner quick connector according to claim 1, characterized in that, The quick connector base (100) is fixed with a support (120), and the support (120) is rotatably mounted with a rotating shaft (121). The worm gear (310) is coaxially and fixedly connected with the rotating shaft (121), and the lower end of the locking rod (330) is fixedly connected with the rotating shaft (121).

4. The anti-loosening clamping device for a mobile air conditioner quick connector according to claim 1, characterized in that, The pad (340) includes an elastic clip (341) and a rubber block (342). The elastic clip (341) is detachably fixed to one side of the elastic clip (341), and the elastic clip (341) is fixedly connected to the upper end of the locking rod (330).

5. The anti-loosening clamping device for a mobile air conditioner quick connector according to claim 2, characterized in that, The gear disc (510) is rotatably disposed on the outer surface of the quick connector base (100), and a rotating part (530) is rotatably sleeved on the outer surface of the quick connector base (100). The rotating part (530) is coaxially fixed with the gear disc (510).

6. The anti-loosening clamping device for a mobile air conditioner quick connector according to claim 5, characterized in that, The outer surface of the rotating part (530) is provided with anti-slip texture, and a reset member (540) is connected between the inner wall of the rotating part (530) and the outer surface of the quick connector base (100).

7. The anti-loosening clamping device for a mobile air conditioner quick connector according to claim 1, characterized in that, At least two self-locking clamping components (300) are provided, and multiple self-locking clamping components (300) are arranged at equal intervals in a ring along the outer circumference of the quick connector base (100). Multiple gears (520) are provided in a one-to-one correspondence with the worm gear (320).

8. A mobile air conditioner quick connector anti-loosening clamping device according to claim 6, characterized in that, The rotating part (530) is an annular body, the resetting member (540) is a torsion spring, the gear plate (510) is disposed inside the locking cover (110), and the outer diameter of the rotating part (530) is the same as the outer diameter of the locking cover (110).

9. A mobile air conditioner quick connector anti-loosening clamping device according to claim 8, characterized in that, A toothed part (111) is slidably connected inside the locking cover (110). A pull rod (112) is fixed to the toothed part (111). One end of the pull rod (112) extends to the outside of the locking cover (110). A compression spring (113) is connected between the toothed part (111) and the inner wall of the locking cover (110). The compression spring (113) pushes the toothed part (111) to slide and engage with the toothed disc (510) to achieve radial locking of the toothed disc (510).

10. A mobile air conditioner quick connector anti-loosening clamping device according to claim 1, characterized in that, The quick connector base (100) is fitted with a docking tube (130), the docking port of the docking tube (130) is fixed with a sealing ring, and a slot (131) is opened on the outer surface of the docking tube (130), the slot (131) and the pad (340) are engaged.

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