Safety inflation connecting device

Abstract

The utility model relates to a safety air inflation connecting device which comprises an air source plug, a spring tube connected with the air source plug and a safety pressure reducing device connected with the spring tube, and is characterized in that the safety pressure reducing device comprises an air inlet pipe, an air outlet pipe, a pressure reducing valve, a safety mechanism and a pressure gauge; the safety mechanism comprises a pressure relief assembly which comprises a pressure induction cavity, an induction piston movably arranged in the pressure induction cavity, a first elastic reset piece connected with the induction piston and the pressure induction cavity, and a pressure relief pipe arranged on the pressure induction cavity; the cut-off assembly comprises a linkage structure, a cylindrical plug and a cylindrical cavity formed in the air inlet pipe. A locking assembly; and a manual unlocking assembly. According to the device, through the mechanical linkage design of the pressure relief assembly and the cut-off assembly, rapid relief of high-pressure air and complete blocking of an air inlet pipeline are synchronously achieved when the pressure reducing valve fails, the risk of pressure residue of single pressure relief or continuous input of an air source is avoided, and the defects that in the prior art, pressure relief is not thorough, and response is lagged are fundamentally overcome.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, specifically to a safety inflatable connection device. Background Technology

[0002] Air mattresses in medical devices typically require connection to a high-pressure air source within the hospital's central air supply system. A pressure-reducing valve regulates the high-pressure gas to a safe pressure before delivering it to the air mattress. However, in practice, the pressure-reducing valve may fail due to mechanical malfunctions or component aging, allowing high-pressure air to directly enter the lower oil line. If the air source is not promptly cut off and pressure is not released, excessively high pressure can damage the air mattress and endanger patient safety. Current technologies often employ a single pressure-relief valve that automatically releases pressure when a threshold is exceeded. However, simple pressure relief cannot cut off the high-pressure source, and continuous air input leads to insufficient pressure relief efficiency, preventing the pressure from quickly decreasing to a safe range. This paper proposes a safe inflation connection device to address these issues. Utility Model Content

[0003] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0004] To address the technical problems mentioned in the background section, some embodiments of this application provide a safe inflatable connection device, including an air source plug, a spring tube connected to the air source plug, and a safety pressure reducing device connected to the spring tube. The safety pressure reducing device includes an inlet pipe, an outlet pipe, a pressure reducing valve, a safety mechanism, and a pressure gauge. The safety mechanism includes:

[0005] The pressure relief assembly includes a pressure sensing chamber, a sensing piston movably disposed within the pressure sensing chamber, a first elastic reset member connecting the sensing piston and the pressure sensing chamber, and a pressure relief pipe disposed on the pressure sensing chamber.

[0006] The cut-off assembly includes a linkage structure, a cylindrical plug, and a cylindrical cavity disposed on the intake pipe;

[0007] Locking components;

[0008] Manually unlock components.

[0009] Specifically, the linkage structure includes a first connecting rod hinged to the sensing piston, a lever hinged to the first connecting rod, a second connecting rod hinged to the lever, and a locking rod hinged to the second connecting rod; the locking rod is fixedly connected to the cylindrical plug.

[0010] Specifically, the locking assembly includes a guide rod disposed on the inner wall of the safety pressure reducing device, a second elastic reset member connected to the guide rod, and an arc-shaped locking member disposed at the end of the guide rod; the diameter of the arc-shaped locking member is equal to the diameter of the locking rod.

[0011] Specifically, the manual unlocking component includes an unlocking element, a triangular block at one end of the unlocking element, and a third elastic reset element connected to the unlocking element; the guide rod is provided with a triangular guide groove that cooperates with the triangular block.

[0012] Specifically, the diameter of the cylindrical plug is larger than the diameter of the intake pipe, and the depth of the cylindrical cavity is larger than the diameter of the intake pipe.

[0013] Specifically, the inlet of the pressure relief pipe is located on the side wall of the pressure sensing chamber.

[0014] The beneficial effects of this utility model are:

[0015] (1) This application, through the mechanical linkage design of the pressure relief component and the cut-off component, can simultaneously realize the rapid release of high-pressure air and the complete blockage of the air intake pipeline when the pressure reducing valve fails, avoiding the risk of pressure residue or continuous air input caused by single pressure relief or single cut-off, and fundamentally solving the defects of incomplete pressure relief and delayed response in the prior art.

[0016] (2) The locking component ensures that the cylindrical plug cannot automatically reset after being cut off by engaging with the locking rod through the arc-shaped locking piece, thus preventing accidental restart due to pressure fluctuations; the manual unlocking component requires medical staff to actively operate to restore gas supply, and forces a safety check after troubleshooting to avoid residual safety hazards. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0018] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0019] In the attached diagram:

[0020] Figure 1 This is a structural diagram of the present invention;

[0021] Figure 2 This is a diagram showing the internal structure of the safety pressure reduction device in this utility model;

[0022] Figure 3 This is a side view of the present invention;

[0023] Figure 4 for Figure 3 AA-line sectional view;

[0024] Figure 5 for Figure 3 BB line section view. Detailed Implementation

[0025] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0026] It should also be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0027] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0028] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0029] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] Reference Figures 1-5 As shown, the present invention provides a safety inflation connection device, comprising an air source plug 1, a spring tube 2 connected to the air source plug 1, and a safety pressure reducing device 3 connected to the spring tube 2. The safety pressure reducing device 3 includes an air inlet pipe 31, an air outlet pipe 32, a pressure reducing valve 33, a safety mechanism 34, and a pressure gauge 35. The safety mechanism 34 includes:

[0031] The pressure relief assembly 36 includes a pressure sensing chamber 361, a sensing piston 362 movably disposed in the pressure sensing chamber 361, a first elastic reset member 363 connecting the sensing piston 362 and the pressure sensing chamber 361, and a pressure relief pipe 364 disposed on the pressure sensing chamber 361.

[0032] The cut-off assembly 37 includes a linkage structure 371, a cylindrical plug 372, and a cylindrical cavity 373 disposed on the intake pipe 31;

[0033] Locking component 38;

[0034] Manually unlock component 39.

[0035] The gas source plug 1 connects to the hospital's high-pressure gas source. The high-pressure gas source enters the safety pressure reducing device 3 through the spring tube 2. After being reduced in pressure by the pressure reducing valve 33, it enters the air mattress through the air outlet pipe 32 for inflation. When the pressure reducing valve 33 fails, high-pressure air enters the outlet pipe 32. The air pressure is greater than the pulling force of the first elastic reset member 363, pushing the sensing piston 362 to move out of the pressure sensing chamber 361. During the movement, the inlet of the pressure relief pipe 364 is opened, connecting the pressure relief pipe 364 with the outlet pipe 32, and the high-pressure air is discharged through the pressure relief pipe 364. At the same time, the sensing piston 362 controls the cylindrical plug 372 to move into the cylindrical cavity 373 through the linkage structure 371, cutting off the input of high-pressure air. The locking component 38 temporarily fixes the cylindrical plug 372 in the cylindrical cavity 373. When the medical staff determines that inflation can continue, the manual unlocking component 39 is used to unlock the cylindrical plug 372, the air pressure in the outlet pipe 32 decreases, and the sensing piston 362 is reset under the action of the first elastic reset member 363, disconnecting the pressure relief pipe 364 from the outlet pipe 32. At the same time, the cylindrical plug 372 is pulled out of the cylindrical cavity 373 through the linkage structure 371, and the high-pressure air source can be input. Using the inflation connection device with the above structure, high-pressure air can be rapidly released and the air inlet pipe 31 can be completely blocked simultaneously when the pressure reducing valve 33 fails. This avoids the risk of pressure residue or continuous air supply caused by single pressure release or single cut-off. The high-pressure air provides pressure to push the cylindrical plug 372 into the cylindrical cavity 373. The greater the pressure, the greater the thrust and the better the cut-off effect, fundamentally solving the defects of incomplete pressure release and delayed response in the prior art. The locking component 38 can prevent the automatic reset of the sensing piston 362 due to pressure reduction. The manual unlocking component 39 requires active operation by medical personnel to restore the air supply, which forces a safety check after fault diagnosis, avoids safety hazards, and makes the device safer.

[0036] Specifically, the linkage structure 371 includes a first connecting rod 374 hinged to the sensing piston 362, a lever 375 hinged to the first connecting rod 374, a second connecting rod 376 hinged to the lever 375, and a locking rod 377 hinged to the second connecting rod 376; the locking rod 377 is fixedly connected to the cylindrical plug 372.

[0037] When the sensing piston 362 moves out of the pressure sensing chamber 361, it drives the first connecting rod 374 to move, which in turn drives the second connecting rod 376 to move via the lever 375. This, in turn, drives the cylindrical plug 372 to move into the cylindrical cavity 373, cutting off the high-pressure air source. Specifically, the lever 375 is an unequal-arm lever, and its fulcrum is closer to the first connecting rod 374, so that the moving distance of the cylindrical plug 372 is greater than the moving distance of the sensing piston 362, ensuring that the cylindrical plug 372 can move completely into the cylindrical cavity 373 and cut off the high-pressure air source.

[0038] Specifically, the locking assembly 38 includes a guide rod 381 disposed on the inner wall of the safety pressure relief device 3, a second elastic reset member 382 connected to the guide rod 381, and an arc-shaped locking member 383 disposed at the end of the guide rod 381; the diameter of the arc-shaped locking member 383 is equal to the diameter of the locking rod 377.

[0039] When the cylindrical plug 372 is fully inserted into the cylindrical cavity 373, the guide rod 381 moves towards the cylindrical plug 372 under the action of the second elastic reset member 382, ​​so that the arc-shaped locking member 383 engages with the locking rod 377, preventing the pressure of the air outlet pipe 32 from decreasing, the sensing piston 362 resets, the cylindrical plug 372 resets, causing high-pressure air to re-enter the failed pressure reducing valve 33, thereby improving the safety of use.

[0040] Specifically, the manual unlocking component 39 includes an unlocking component 391, a triangular block 392 disposed at one end of the unlocking component 391, and a third elastic reset component 393 connected to the unlocking component 391; the guide rod 381 is provided with a triangular guide groove 394 that cooperates with the triangular block 392.

[0041] After the medical staff eliminates the safety hazard, they press down on the unlocking piece 391, causing the triangular block 392 to enter the triangular guide groove 394, which drives the guide rod 381 to move in the opposite direction, unlocking the arc-shaped lock piece 383 and the lock rod 377. The pressure in the air outlet pipe 32 is less than the pulling force of the third elastic reset key, the sensing piston 362 resets, and pulls the cylindrical plug 372 out of the cylindrical cavity 373, allowing air to be released again.

[0042] Specifically, the diameter of the cylindrical plug 372 is larger than the diameter of the intake pipe 31, and the depth of the cylindrical cavity 373 is larger than the diameter of the intake pipe 31.

[0043] The depths of both the cylindrical plug 372 and the cylindrical cavity 373 are greater than the diameter of the intake pipe 31, thus completely eliminating the risk of high-pressure air leakage.

[0044] Specifically, the inlet of the pressure relief pipe 364 is located on the side wall of the pressure sensing chamber 361.

[0045] The inlet of the pressure relief pipe 364 is located on the side wall of the pressure sensing chamber 361. When the device is operating normally, the sensing piston 362 cuts off the pressure relief pipe 364 from the air outlet pipe 32. When the pressure reducing valve 33 fails, the linkage control between the inlet of the pressure relief pipe 364 and the sensing piston 362 enables rapid response and precise opening and closing of the pressure relief action.

[0046] In summary, this utility model effectively solves the problems of incomplete pressure relief and high safety risks in the prior art through the linkage and dual safety mechanism of the pressure relief component 36 and the cut-off component 37.

[0047] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in the embodiments of this disclosure is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A safety inflatable connection device, comprising an air source plug (1), a spring tube (2) connected to the air source plug (1), and a safety pressure reducing device (3) connected to the spring tube (2), characterized in that: The safety pressure reducing device (3) includes an inlet pipe (31), an outlet pipe (32), a pressure reducing valve (33), a safety mechanism (34), and a pressure gauge (35); the safety mechanism (34) includes: The pressure relief assembly (36) includes a pressure sensing chamber (361), a sensing piston (362) movably disposed in the pressure sensing chamber (361), a first elastic reset member (363) connecting the sensing piston (362) and the pressure sensing chamber (361), and a pressure relief pipe (364) disposed on the pressure sensing chamber (361). The cutting assembly (37) includes a linkage structure (371), a cylindrical plug (372), and a cylindrical cavity (373) disposed on the intake pipe (31). Locking component (38); Manually unlock components (39).

2. A safety inflation coupling device according to claim 1, wherein: The linkage structure (371) includes a first link (374) hinged to the sensing piston (362), a lever (375) hinged to the first link (374), a second link (376) hinged to the lever (375), and a locking rod (377) hinged to the second link (376); the locking rod (377) is fixedly connected to the cylindrical plug (372).

3. The safety inflatable connection device according to claim 2, characterized in that: The locking assembly (38) includes a guide rod (381) disposed on the inner wall of the safety pressure reducing device (3), a second elastic reset member (382) connecting the guide rod (381), and an arc-shaped locking member (383) disposed at the end of the guide rod (381); the diameter of the arc-shaped locking member (383) is equal to the diameter of the locking rod (377).

4. A safety inflation connection device according to claim 3, wherein: The manual unlocking component (39) includes an unlocking component (391), a triangular block (392) located at one end of the unlocking component (391), and a third elastic reset component (393) connected to the unlocking component (391); the guide rod (381) is provided with a triangular guide groove (394) that cooperates with the triangular block (392).

5. The safety inflation connection device of claim 1, wherein: The diameter of the cylindrical plug (372) is greater than the diameter of the intake pipe (31), and the depth of the cylindrical cavity (373) is greater than the diameter of the intake pipe (31).

6. A safety inflation coupling device according to claim 1, wherein: The inlet of the pressure relief pipe (364) is located on the side wall of the pressure sensing chamber (361).

Images