Dual path quick connect inflation fitting

Abstract

The utility model discloses a kind of double-path quick connection inflation connector, including Y-type main body, 1 air inlet channel and 2 air outlet channels are provided in it;Air inlet inner wall is provided with internal thread to connect inflation gun, air outlet outer periphery is provided with quick connection claw, and inner wall is provided with annular sealing groove and O-shaped sealing ring, and flow passage inner wall circular arc transition.The utility model solves the problem of single-path inflation low efficiency and existing double-path switching scheme connection contradiction, poor sealing, airflow resistance, short service life, with double-path synchronous inflation high efficiency, air inlet connection stability, air outlet plug convenient, good sealing, airflow smooth and strong durability.

Description

Technical Field

[0001] This utility model relates to the technical field of connecting components for inflatable equipment, specifically to a dual-path quick-connect inflatable connector that enables simultaneous dual-path inflatable supply. Background Technology

[0002] In inflation scenarios (such as logistics cushioning inflatable bags), existing inflation connectors are generally single-path structures, meaning one connector corresponds to only one inflation hose or nozzle, and can only inflate one inflation device at a time. When multiple inflation devices (such as two inflatable bags) need to be inflated simultaneously, single-path connectors have a core bottleneck: low efficiency. Traditional connectors can only inflate one path at a time, requiring individual operation during batch operations, resulting in an efficiency of only 50% of the dual-path solution and doubling the time consumption.

[0003] To overcome the "single-path limitation," existing technologies attempt to achieve dual-path splitting through external adapters (such as T-connectors), but existing solutions have significant drawbacks:

[0004] Connection contradiction: The threaded / clamp connection at the air outlet is cumbersome to install and remove (requiring 10-30 seconds per time), making it impossible to balance stability and efficiency;

[0005] Insufficient sealing: Relying on threaded or flat sealing, the leakage rate reaches 15%-25%, affecting the inflation pressure;

[0006] High flow resistance: The right-angle split structure increases airflow resistance by 40%-60%, resulting in slow inflation speed and high energy consumption.

[0007] Fragile structure: The modular design and ordinary PVC material make it prone to cracking and brittleness, with a service life of only 3-6 months.

[0008] Existing technologies fail to address the differentiated requirements of "stable fit at the inlet and quick plug-in / plug-out at the outlet," thus negating the efficiency advantages of dual-path inflation. Therefore, there is an urgent need for a dual-path connector with optimized connection methods, sealing structures, flow channels, and materials to systematically solve these problems. Utility Model Content

[0009] The technical problem to be solved by this utility model is: how to provide a dual-path quick-connect inflation connector to solve the problems of cumbersome connection operation, poor sealing reliability, large airflow resistance and insufficient structural durability in dual-path inflation connection schemes, and to achieve efficient, sealed, low-resistance and durable dual-path synchronous inflation.

[0010] The technical solution adopted by this utility model to solve its technical problem is:

[0011] A dual-channel quick-connect inflatable connector, characterized in that it comprises: a Y-shaped connector body, wherein the connector body has one air inlet channel and two air outlet channels forming a through-hole, and the ports corresponding to the connector body are the air inlet, the first air outlet, and the second air outlet;

[0012] The air inlet has an internal thread on its inner circumference for screwing into the external thread of the air gun muzzle.

[0013] The first air outlet and the second air outlet are symmetrically provided with two L-shaped slots on their outer periphery. The L-shaped slot includes an axial opening section and a circumferential extension section. The axial opening section extends along the axis of the air outlet, and the circumferential extension section extends circumferentially from the end of the axial opening section. The L-shaped slot is used to engage with the metal limiting protrusion on the inner wall of the external inflation hose.

[0014] Both the first and second air outlets have annular sealing grooves on their outer walls. The annular sealing grooves are located at the end of the L-shaped slot that is furthest from the air outlet end face. An O-ring is fitted inside the annular sealing groove. When the external inflation hose is fitted into the air outlet, the top of the mating end of the external inflation hose presses against the O-ring to form a seal.

[0015] In a further optimized technical solution, the connection between the air intake channel and the two air outlet channels is a rounded transition structure to reduce airflow resistance.

[0016] Further optimization of the technical solution: the connector body is integrally injection molded from engineering plastic, and the engineering plastic is polypropylene (PP), acrylonitrile-butadiene-styrene copolymer (ABS), or nylon (PA).

[0017] Further optimization of the technical solution involves using an O-ring made of aging-resistant rubber (such as EPDM rubber or silicone rubber), and ensuring that the cross-sectional diameter of the O-ring is 0.2–0.5 mm larger than the depth of the annular sealing groove to form an interference seal.

[0018] Further optimization of the technical solution involves using a trapezoidal thread or a cylindrical pipe thread (such as a G thread or an NPT thread) for the internal thread of the air inlet, which is compatible with the external thread specifications of common air guns.

[0019] The beneficial effects of this utility model are:

[0020] 1. Significantly improved inflation efficiency: The Y-shaped dual-channel design enables simultaneous inflation with "one inlet and two outlets," improving efficiency by 100% compared to single-channel connectors; the L-shaped slot combined with the metal protrusion "insert-rotate" quick-connect structure reduces the time for a single insertion and removal to ≤3 seconds, improving efficiency by more than 70% compared to traditional threaded connections (10-30 seconds), making it particularly suitable for mass inflation scenarios.

[0021] 2. Significantly enhanced sealing performance: The annular sealing groove is located at the far end of the L-shaped groove, which precisely matches the annular extrusion surface of the hose connection end. The O-ring is compressed by 25% to form a reliable seal. According to the test, the air leakage is ≤3ml / min under 0.8MPa air pressure, which is only 1 / 10 of the industry standard, completely solving the air leakage problem of traditional adapters.

[0022] 3. High reliability in preventing slippage: The circumferential extension of the L-shaped slot, together with the end limiting protrusion, achieves mechanical interlocking of the metal protrusion, with an axial anti-slip force of ≥20N, and can withstand 100,000 cycles of 0.8MPa air pressure impact test without loosening; the anti-slip texture at the bottom of the slot further reduces the risk of micro-loosening caused by vibration.

[0023] 4. Excellent structural durability: It is made of ABS engineering plastic through one-piece injection molding, with a tensile strength of ≥40MPa and a temperature range of -20℃ to 80℃; after 5000 insertion and removal cycles, the wear of the slot is ≤0.05mm, the O-ring compression rate retention rate is ≥90%, and the service life is more than 2 years, which is 3 times longer than that of the split adapter.

[0024] 5. Excellent compatibility and economy: The internal thread of the air inlet G1 / 2 is directly compatible with existing air guns without the need to modify the original equipment; the arc transition design of the flow channel reduces airflow resistance by 50%, increases inflation speed by 30%, and indirectly reduces air compressor energy consumption by 15%, taking into account both practicality and energy saving.

[0025] In summary, this utility model achieves comprehensive optimization of dual-path inflation, which is "efficient, sealed, prevents slippage, and durable" through structural innovation, and fully breaks through the existing technical bottlenecks. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0027] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0028] 1-Connector body; 11-Inlet channel; 12-Outlet channel; 2-Inlet; 3a-First outlet; 3b-Second outlet; 31-L-shaped groove; 32-Annular sealing groove. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] like Figure 1 and2 As shown, the specific implementation structure of the dual-path quick-connect inflation connector of this utility model is as follows:

[0031] I. Overall Structure and Materials

[0032] A dual-path quick-connect inflatable connector includes: a Y-shaped connector body 1, with one air inlet channel 11 and two air outlet channels 12 forming a through-through inside the connector body 1, and the ports corresponding to the connector body are air inlet 2, first air outlet 3a and second air outlet 3b.

[0033] The Y-type connector body 1 is integrally injection molded from ABS engineering plastic, utilizing its high strength (tensile strength ≥ 40 MPa) and impact resistance (notched impact strength ≥ 20 kJ / m). 2 The easy-to-form properties ensure the structural integrity and durability of the Y-type connector body 1.

[0034] The inner circumference of the air inlet 2 is provided with an internal thread for screwing into the external thread of the air gun muzzle.

[0035] Two L-shaped slots 31 are symmetrically provided on the outer periphery of the first air outlet 3a and the second air outlet 3b. The L-shaped slot 31 includes an axial opening section and a circumferential extension section. The axial opening section extends along the axial direction of the air outlet, and the circumferential extension section extends circumferentially from the end of the axial opening section. The L-shaped slot is used to engage with the metal limiting protrusion on the inner wall of the external inflation hose.

[0036] Both the outer walls of the first air outlet 3a and the second air outlet 3b are provided with annular sealing grooves 32, and O-rings are fitted inside the annular sealing grooves 32.

[0037] II. Design Parameters of Key Components

[0038] Air inlet 2 and threaded structure:

[0039] Thread specifications: The inner wall of the air inlet is machined with G1 / 2 cylindrical pipe thread, which is compatible with the external thread interface of mainstream air guns on the market (1.814mm pitch, 55° thread angle) to ensure a tight connection.

[0040] Thread length: The effective length of the internal thread is ≥8mm, ensuring a meshing depth of ≥6 threads with the air gun, and maintaining a stable connection under high-pressure air source to prevent loosening and leakage.

[0041] L-shaped slot 31 (air outlet):

[0042] Two L-shaped slots 31 are symmetrically arranged on the outer periphery of each air outlet. Specific structure:

[0043] Axial opening section: 5mm in length and 3mm in width, allowing axial insertion of the metal limiting protrusion (2.8mm ± 0.1mm in width) on the inner wall of the external hose, with a guiding accuracy of ≤0.1mm;

[0044] Circumferential extension section: Extends 4mm clockwise from the end of the axial section to a depth of 2mm, forming an L-shaped guide path of "insertion-rotation-locking" at an angle of 90°±2° with the axial section.

[0045] Sealing structure (air outlet):

[0046] Annular sealing groove 32: Located on the side away from the air outlet end face relative to the L-shaped groove 31, with an axial distance of 4mm (tolerance ±0.2mm) from the groove; the sealing groove has a depth of 1.5mm and a width of 2.6mm, and is compatible with silicone rubber O-rings (section diameter 2.4mm);

[0047] Sealing logic: The external hose connection end is equipped with an annular extrusion surface (the outer diameter is compatible with the inner diameter of the sealing groove φ20mm). When the O-ring is connected, it is compressed to achieve a compression rate of 25% (compression amount 0.6mm), forming an interference seal and blocking airflow leakage.

[0048] Weather resistance: Silicone rubber O-rings are resistant to temperatures from -40℃ to 150℃ and maintain their sealing elasticity even under high and low temperature conditions.

[0049] Flow channel optimization design:

[0050] The connection between the intake and exhaust channels uses a 5mm rounded transition, which reduces airflow resistance by more than 50% compared to a right-angle transition.

[0051] III. Assembly and Usage Methods

[0052] Air inlet assembly: Screw the external thread end of the air gun into the G1 / 2 internal thread of the air inlet of the connector, and tighten until the thread end face fits (recommended torque 3 N·m), using the self-sealing property of the thread to block the leakage of high-pressure air source.

[0053] Air outlet assembly (three-step locking):

[0054] ① Axial alignment and insertion: Align the metal limiting protrusion (2.8mm wide) on the inner wall of the external flexible tube with the axial opening of the L-shaped slot 31, and push it in axially 5mm.

[0055] Until the metal protrusion reaches the bottom of the card slot;

[0056] ② Circumferential rotation locking: Rotate the hose clockwise by 45° to make the metal protrusion slide along the circumferential extension to the end, forming a mechanical interlock (rotational resistance ≤ 0.5 N·m, can be operated with one hand);

[0057] ③ End face compression seal: Simultaneously, the annular compression surface of the hose mating end tightly compresses the O-ring in the sealing groove to complete the airtight seal.

[0058] Disassembly procedure:

[0059] Rotate the hose counterclockwise by 45°. The metal protrusion will disengage from the limiting protrusion and retract along the circumferential extension section to the axial opening section. Pull the hose out axially to complete the disassembly (the O-ring seal will elastically reset and can be reused).

[0060] IV. Verification of the Core Advantages of the Implementation Examples

[0061] Sealing performance: According to third-party testing, after holding a pressure of 0.8MPa for 10 minutes, the leakage rate is ≤3ml / min (superior to the industry standard ≤30ml / min);

[0062] Anti-detachment performance: The metal protrusion will only detach from the limiting protrusion when the axial tensile force is ≥20N, and it can withstand the 0.8MPa air pressure impact test (100,000 cycles) without loosening;

[0063] Durability: After 5000 insertion and removal tests, the wear of the L-shaped groove is ≤0.05mm, the O-ring compression rate retention rate is ≥90%, and the service life is more than 2 years;

[0064] Efficiency Improvement: Dual-channel synchronous inflation efficiency is 100% higher than single-channel inflation, and the time for connecting / disconnecting the air outlet is ≤3 seconds, which is 70% more efficient than traditional threaded connections.

[0065] This embodiment uses "mechanical locking of L-shaped slot + interference sealing of remote sealing groove + anti-detachment design of limiting protrusion" to precisely match the metal protrusion and annular extrusion surface of external hose, systematically solving the pain points of efficiency, sealing, anti-detachment and durability of dual-path inflation, and is the optimal implementation solution of this utility model.

[0066] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0067] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual-path quick-connect inflation connector, characterized in that, include: The Y-shaped connector body has one air inlet channel and two air outlet channels through its interior, with the corresponding ports of the connector body being the air inlet, the first air outlet, and the second air outlet. The air inlet has an internal thread on its inner circumference for screwing into the external thread of the air gun muzzle. Both the first air outlet and the second air outlet are provided with at least two quick-connect claws on their outer periphery, which are used to engage with the slots of the external hose. Both the first and second air outlets have annular sealing grooves on their outer walls, and O-rings are fitted inside the annular sealing grooves.

2. The dual-path quick-connect inflation connector according to claim 1, characterized in that, The quick-connect claws are two symmetrically arranged and evenly distributed along the circumference of the first air outlet and the second air outlet.

3. The dual-path quick-connect inflation connector according to claim 1, characterized in that, The connection between the air intake channel and the two air outlet channels is a rounded transition structure.

4. The dual-path quick-connect inflation connector according to claim 1, characterized in that, The connector body is integrally injection molded from engineering plastics, such as polypropylene, acrylonitrile-butadiene-styrene copolymer, or nylon.

5. A dual-path quick-connect inflation connector according to claim 1, characterized in that, The O-ring is made of aging-resistant rubber, and the cross-sectional diameter of the O-ring is 0.2 to 0.5 mm larger than the depth of the annular sealing groove to form an interference seal.

6. A dual-path quick-connect inflation connector according to claim 1, characterized in that, The internal thread of the air inlet is a trapezoidal thread or a cylindrical pipe thread.

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