Inflation regulating valve for ventilation gas mask and ventilation gas mask

Abstract

The utility model discloses an inflation regulating valve for a ventilation gas mask and the ventilation gas mask, the inflation regulating valve comprises a valve body and a quick male joint, the valve body is an injection molding part, and the valve body is provided with a mounting hole; the quick male connector is a metal piece, one end of the quick male connector is connected to the valve body, and the other end of the quick male connector is used for being connected with an external quick female plug. Wherein the quick male connector comprises a main body pipe, a threaded connection part, a rubber blocking ring part and a quick male connector part which are integrally connected, the threaded connection part is arranged at one end of the main body pipe, the quick male connector is arranged at the other end of the main body pipe, and the rubber blocking ring part is arranged on the side, close to the threaded connection part, of the main body pipe; the threaded connecting part is integrally arranged in the mounting hole, and the glue blocking ring part is arranged outside the mounting hole and is used for preventing the valve body from overflowing glue.

Description

Technical Field

[0001] This utility model relates to the field of ventilation mask technology in workpiece scenarios with polluted environment, and particularly to an inflation regulating valve and a ventilation mask using the inflation regulating valve. Background Technology

[0002] In environments where radioactive aerosol contamination or other contaminated conditions may exist, wearing a ventilated face mask is an important protective measure. The ventilated face mask contains an inflation regulating valve to adjust the airflow, ensuring the user has sufficient air for breathing. The inflation regulating valve consists of a valve body and a quick-inflation connector. The quick-inflation connector is a metal component, currently manufactured using pre-embedded injection molding to connect the valve body and the connector as a single unit. However, existing methods of pre-embedding the quick-inflation connector result in significant glue overflow at the connector location, reducing yield and increasing product cost.

[0003] Therefore, the overflow of adhesive at the quick-inflation joint during injection molding is a problem that urgently needs to be solved in this field. Utility Model Content

[0004] This utility model provides an inflation regulating valve and an inflation regulating valve for a ventilated face mask, aiming to solve the problem of glue overflow during injection molding of the inflation regulating valve with a pre-embedded quick inflation connector.

[0005] According to a first aspect provided in the embodiments of this application, an inflation regulating valve for a ventilated face mask is provided, including a valve body and a quick-connect male connector: the valve body is an injection molded part, and the valve body has a mounting hole; the quick-connect male connector is a metal part, one end of the quick-connect male connector is connected to the valve body, and the other end is used to connect to an external quick-connect female connector;

[0006] The quick-connect male connector includes an integrally connected main tube, a threaded connection part, a glue-blocking ring part, and a quick-connect male connector part. The threaded connection part is located at one end of the main tube, the quick-connect male connector is located at the other end of the main tube, and the glue-blocking ring part is located on the side of the main tube near the threaded connection part. The threaded connection part is integrally located inside the mounting hole, and the glue-blocking ring part is located outside the mounting hole. The glue-blocking ring part is used to prevent glue from overflowing from the valve body.

[0007] In the inflation regulating valve of this utility model, the thickness of the rubber-blocking ring is in the range of 1-4mm.

[0008] In the inflation regulating valve of this utility model, the thickness of the threaded connection portion is greater than the thickness of the rubber-blocking ring portion.

[0009] In the inflation regulating valve of this utility model, the valve body includes a main body and an adjusting knob, and the adjusting knob is rotatably mounted on the main body.

[0010] In the inflation regulating valve of this utility model, the main body includes a cylindrical part, an air inlet protrusion and an air outlet protrusion disposed on the circumferential surface of the cylindrical part, the cylindrical part has a cavity inside, the air inlet protrusion has an air inlet hole communicating with the cavity, the air outlet protrusion has an air outlet hole communicating with the cavity, the mounting hole is disposed on the air inlet protrusion, and the mounting hole is connected to the air inlet hole.

[0011] In the inflation regulating valve of this utility model, the air inlet protrusion is provided with multiple reinforcing ribs.

[0012] In the inflation regulating valve of this utility model, the outer wall of the air outlet protrusion has a protruding ring, and the thickness of the protruding ring protruding from the air outlet protrusion gradually increases in the direction towards the cylindrical part.

[0013] In the inflation regulating valve of this utility model, the main body also includes a pressure cap, which is fastened to the end of the cylindrical part opposite to the regulating knob.

[0014] According to a second aspect provided in the embodiments of this application, a ventilated face mask is provided, including the inflation regulating valve described above.

[0015] The technical solution provided in this application embodiment may include the following beneficial effects: This application designs an inflation regulating valve, which can solve the problem of glue overflow generated during the production of inflation regulating valves. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an inflation regulating valve provided by this utility model;

[0018] Figure 2 This is an exploded structural diagram of an inflation regulating valve provided by this utility model;

[0019] Figure 3 This is a cross-sectional structural schematic diagram of an inflation regulating valve provided by this utility model;

[0020] Figure 4 This is a structural schematic diagram of a ventilation mask provided by this utility model.

[0021] Label Explanation:

[0022] 100. Ventilation mask; 1. Inflation regulating valve; 10. Valve body; 11. Mounting hole; 12. Main body; 121. Cylindrical part; 1211. Cavity; 1212. Slot; 122. Inlet protrusion; 1221. Inlet hole; 1222. Reinforcing rib; 123. Outlet protrusion; 1231. Outlet hole; 1232. Protruding ring; 13. Adjustment knob; 14. Pressure cap; 141. Buckle; 20. Quick connector; 21. Main tube; 22. Threaded connection; 23. Rubber retaining ring; 24. Quick connector. Detailed Implementation

[0023] 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, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0025] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0026] Please refer to Figures 1-4 As shown, this utility model discloses an inflation regulating valve 1 for a ventilated face mask, including a valve body 10 and a quick-connect male connector 20. The valve body 10 is made of plastic. One end of the quick-connect male connector 20 is used to connect to an external quick-connect female connector to connect to external high-pressure air and supply air for the worker to breathe into the ventilated face mask. The quick-connect male connector 20 is a metal component, and the other end of the quick-connect male connector 20 is connected to the valve body 10 to supply air to the ventilated face mask through the valve body 10 and the connecting pipe.

[0027] The quick-connect male connector 20 includes an integrally formed main body 12 tube, a threaded connection portion 22, a retaining ring portion 23, and a connector portion 24. The threaded connection portion 22 is located at one end of the main body 12 tube, the quick-connect male connector 20 is located at the other end of the main body 12 tube, and the retaining ring portion 23 is located on the side of the main body 12 tube near the threaded connection portion 22. The threaded connection portion 22 is integrally formed inside the mounting hole 11, and the retaining ring portion 23 is located outside the mounting hole 11.

[0028] In manufacturing the inflation regulating valve 1 of this application, the quick-connect male connector 20 is first pre-embedded in the relevant mold, and then the valve body 10 and the quick-connect male connector 20 are injection molded into a whole to ensure the strength of the connection between the quick-connect male connector 20 and the valve body 10. The threaded connection portion 22 of the quick-connect male connector 20 of this application is provided in the mounting hole 11 of the valve body 10, and a retaining ring portion is also provided outside the mounting hole 11. The inclusion of the retaining ring portion 23 can prevent the occurrence of glue overflow defects, thereby improving the production yield. Furthermore, the threaded connection portion 22 can also increase the contact area between the quick-connect male connector 20 and the valve body 10, thereby further improving the stability of the connection between the valve body 10 and the quick-connect male connector 20.

[0029] In an optional embodiment, the thickness of the adhesive-blocking ring 23 is between 1 mm and 4 mm.

[0030] Specifically, the adhesive-blocking ring 23 protrudes outward from the circumferential side of the main body 12 tube to form a ring-shaped structure. The thickness of the adhesive-blocking ring is the distance between the circumferential side of the adhesive-blocking ring 23 and the main body 12 tube. The thickness of the adhesive-blocking ring 23 is set between 1mm and 4mm, which can effectively prevent adhesive overflow and control costs.

[0031] In an optional embodiment, the thickness of the threaded connection portion 22 is greater than the thickness of the retaining ring portion 23.

[0032] Specifically, the threaded connection portion 22 has a helical pattern and is arranged around the outer peripheral wall of the main body 12 tube. The thickness of the threaded connection portion 22 is the distance between the outermost surface of the thread and the circumferential surface of the main body 12 tube. In this embodiment, the thickness of the threaded connection portion 22 is set to be greater than the thickness of the retaining ring portion 23 to ensure the stability of the connection between the threaded connection portion 22 and the valve body 10.

[0033] In an optional embodiment, the valve body 10 includes a main body 12 and an adjusting knob 13, which is rotatably mounted on the main body 12. The main body 12 includes a cylindrical portion 121, an air inlet protrusion 122, and an air outlet protrusion 123. Both the air inlet protrusion 122 and the air outlet protrusion 123 are disposed on the circumferential surface of the cylindrical portion 121. The cylindrical portion 121 has a cavity 1211 inside. The air inlet protrusion 122 has an air inlet hole 1221 communicating with the cavity 1211, and the air outlet protrusion 123 has an air outlet hole 1231 communicating with the cavity 1211. A mounting hole 11 is disposed on the air inlet protrusion 122, and the mounting hole 11 communicates with the air inlet hole 1221.

[0034] Specifically, an adjustment knob 13 is located at one end of the main body 12, and the adjustment knob 13 can be rotated to adjust the ventilation level. The main body 12 includes a cylindrical portion 121, an air inlet protrusion 122, and an air outlet protrusion 123. The air inlet protrusion 122 and the air outlet protrusion 123 are located on opposite sides of the circumferential surface of the cylindrical portion 121, and are staggered from each other. The end of the cylindrical portion 121 facing the adjustment knob 13 is recessed away from the adjustment knob 13 to form a cylindrical cavity 1211, and the adjustment knob 13 is rotated to be disposed inside the cavity 1211. An air inlet hole 1221 and an air outlet hole 1231 are respectively provided on the air inlet protrusion 122 and the air outlet protrusion 123, and the air inlet hole 1221 and the air outlet hole 1231 penetrate the side wall of the cylindrical portion 121, thereby communicating with the cavity 1211. Mounting hole 11 is provided at the outer end of air intake protrusion 122 and is connected to air intake hole 1221. The threaded connection part 22 of quick connector 20 extends into mounting hole 11 and is connected to cavity 1211 in cylindrical part 121 through air intake hole 1221.

[0035] In use, the quick female connector and quick male connector 20 at the end of the external connection pipe can be quickly plugged and unplugged, so that the external airflow can enter the cavity 1211 through the quick male connector 20 and the air inlet 1221. Under the control of the adjustment knob 13, the airflow to the air outlet 1231 can be adjusted, thereby controlling the amount of air output.

[0036] In an optional embodiment, the intake protrusion 122 is provided with multiple reinforcing ribs 1222. Since the quick connector 20 is installed on the intake protrusion 122, the mechanical strength requirement for the intake protrusion 122 is high. In this application, multiple reinforcing ribs 1222 are provided on the outer side of the intake protrusion 122. The reinforcing ribs 1222 extend from the intake protrusion 122 to the circumferential surface of the cylindrical portion 121 and are connected to the circumferential surface of the cylindrical portion 121.

[0037] In an optional embodiment, the outer wall of the vent protrusion 123 has a protruding ring 1232, the thickness of which protrudes from the vent protrusion 123 gradually increases in the direction toward the cylindrical portion 121.

[0038] Specifically, the vent protrusion 123 is used to connect a hose, thereby delivering air to the ventilation mask for the worker's breathing. This application provides a protruding ring 1232 on the outer wall of the vent protrusion 123 to increase the airtightness between the hose and the protruding ring 1232. The thickness of the protruding ring 1232 protruding from the vent protrusion 123 gradually increases in the direction extending towards the cylindrical portion 121; that is, the circumferential side of the protruding ring 1232 has a certain slope, and the thickness of the protruding ring 1232 on the side closer to the cylindrical portion 121 is greater than the thickness on the side farther from the cylindrical portion 121. Providing a slope to the outer circumferential surface of the protruding ring 1232 facilitates the connection of the hose to the vent protrusion 123.

[0039] In an optional embodiment, the main body 12 further includes a pressure cap 14, which is fastened to the end of the cylindrical portion 121 opposite to the adjustment knob 13.

[0040] Specifically, the adjusting knob 13 and the pressure cap 14 are respectively located at both ends of the cylindrical portion 121 along its axial direction. The pressure cap 14 is used to press the belt buckle onto the cylindrical portion 121. The end of the cylindrical portion 121 is provided with a groove 1212. The pressure cap 14 is an annular piece, and its inner wall is provided with multiple buckles 141. The pressure cap 14 is pressed onto the groove 1212 of the cylindrical portion 121 by a device to fasten the belt. In related technologies, the belt is tightened using a threaded structure. During operation, different workers have different tightening standards, which is detrimental to product consistency and reduces the yield rate. This application uses a related fixture for tightening, improving the yield rate and significantly enhancing product consistency.

[0041] This application also relates to a ventilated face mask, which includes the aforementioned inflation regulating valve 1. The inflation regulating valve 1, through the provision of the adhesive-blocking ring 23, can prevent adhesive overflow defects, thereby improving the production yield. Furthermore, the threaded connection portion 22 can also increase the contact area with the valve body 10, thereby further improving the stability of the connection between the valve body 10 and the quick-connect male connector 20.

[0042] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An inflation regulating valve for a ventilated face mask, characterized in that, include: The valve body is an injection molded part and has mounting holes; A quick-connect male connector, which is a metal component, has one end connected to the valve body and the other end used to connect to an external quick-connect female connector. The quick-connect male connector includes an integrally connected main tube, a threaded connection part, a glue-blocking ring part, and a quick-connect male connector part. The threaded connection part is located at one end of the main tube, the quick-connect male connector is located at the other end of the main tube, and the glue-blocking ring part is located on the side of the main tube near the threaded connection part. The threaded connection part is integrally located inside the mounting hole, and the glue-blocking ring part is located outside the mounting hole. The glue-blocking ring part is used to prevent glue from overflowing from the valve body.

2. The inflation regulating valve for a ventilated face mask according to claim 1, characterized in that, The thickness of the rubber-blocking ring is in the range of 1-4 mm.

3. The inflation regulating valve for a ventilated face mask according to claim 1, characterized in that, The thickness of the threaded connection portion is greater than the thickness of the rubber retaining ring portion.

4. The inflation regulating valve for a ventilated face mask according to claim 1, characterized in that, The valve body includes a main body and an adjustment knob, which is rotatably mounted on the main body.

5. The inflation regulating valve for a ventilated face mask according to claim 4, characterized in that, The main body includes a cylindrical portion, an air inlet protrusion and an air outlet protrusion disposed on the circumferential surface of the cylindrical portion. The cylindrical portion has a cavity inside. The air inlet protrusion has an air inlet hole communicating with the cavity. The air outlet protrusion has an air outlet hole communicating with the cavity. The mounting hole is disposed on the air inlet protrusion and is connected to the air inlet hole.

6. The inflation regulating valve for a ventilated face mask according to claim 5, characterized in that, The air intake protrusion is provided with multiple reinforcing ribs.

7. The inflation regulating valve for a ventilated face mask according to claim 5, characterized in that, The outer wall of the venting protrusion has a protruding ring, and the thickness of the protruding ring protruding from the venting protrusion gradually increases in the direction towards the cylindrical part.

8. The inflation regulating valve for a ventilated face mask according to claim 5, characterized in that, The valve body also includes a pressure cap, which is fastened to the end of the cylindrical portion opposite to the adjusting knob.

9. A ventilated face mask, characterized in that, Includes the inflation regulating valve as described in any one of claims 1-8.

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