A facemask vent structure

Abstract

The present application relates to including face shield body, elbow, support and annular exhaust structure, the annular exhaust structure is arranged between face shield body and elbow, and the two ends of annular exhaust structure are communicated with face shield body and elbow respectively, the top convex ring is fixedly connected with elbow, the annular exhaust structure includes communication pipe, top convex ring, middle section convex ring, positioning convex ring and multiple rib. By setting integrated annular exhaust structure between face shield body and elbow, the exhaust hole is formed by rib and positioning convex ring, the design mode of traditional subtractive hole digging is abandoned, the precise control of airflow direction is realized through the structure of built exhaust hole, the problems of airflow confusion, impact side wall and intersection in traditional structure are avoided, and noise generation is greatly reduced;Meanwhile, the rib is distributed in ring shape at equal intervals, so that the airflow direction of exhaust hole is not intersected and is ring-shaped to the periphery, and the problem of exhaust blowing bed is solved.

Description

Technical Field

[0001] This invention relates to the field of ventilator mask technology, specifically to a mask exhaust port structure. Background Technology

[0002] A breathing mask generally consists of a frame, padding, and a curved tube. Breathing masks can be divided into exhaust masks and non-exhaust masks according to their exhaust method. Currently, exhaust masks are more commonly used in home and some medical settings. That is, when a user exhales, the exhaled waste gas (mainly composed of...) is... The exhaust gas can be collected in the mask and then discharged through the exhaust vent.

[0003] In existing technologies, the exhaust vents of breathing masks are mostly located on the bend, the main frame, or the connection between the bend and the frame. Some designs add filter cotton to the outside of the exhaust vent to reduce noise and prevent exhaust from blowing onto the bed partner. However, these designs all have the following drawbacks: when the exhaust vent is located on the bend or the main frame, it is easy for the exhaust to blow onto the bed partner, and the concentrated distribution of the exhaust vents limits the noise reduction effect; adding filter cotton increases the user's breathing resistance and reduces wearing comfort; placing the exhaust vent in the annular middle part increases the mold and production assembly costs; at the same time, existing exhaust vents are all processed by removing material and drilling holes in the frame, which easily causes internal airflow chaos and resonance noise. The noise level is further increased after the airflow hits the side walls and crosses. To solve some of the above problems, existing technologies often require multiple parts to work together, which not only makes the structure complex but also further increases the production and use costs. Therefore, there is an urgent need for a mask exhaust vent structure that can take into account noise reduction, prevention of blowing onto the bed partner, low breathing resistance, and low cost. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] This invention provides a mask exhaust port structure that solves the problems of existing mask exhaust ports that easily blow into bed partners, have poor noise reduction effect, high breathing resistance, high cost, and turbulent airflow.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a mask exhaust port structure, comprising a mask body, a bent tube, a bracket, and an annular exhaust structure. The annular exhaust structure is disposed between the mask body and the bent tube, and both ends of the annular exhaust structure are respectively connected to the mask body and the bent tube. The top protruding ring is securely connected to the bent tube. The annular exhaust structure includes a connecting tube, a top protruding ring, a middle protruding ring, a positioning protruding ring, and multiple ribs. The top protruding ring is formed on the outer wall of the connecting tube near the bent tube end. The middle protruding ring is formed on the outer wall of the middle section of the connecting tube. The gap between the connecting tube and the top protruding ring is secured to the bent tube. Multiple ribs are formed radially and spaced below the middle protruding ring along the connecting tube. The inner end of each rib is connected to the outer wall of the connecting tube as an integral structure. The positioning protruding ring is formed on the outer side of the multiple ribs. An exhaust port is formed between every two adjacent ribs and the positioning protruding ring. The multiple exhaust ports are used for breathing exhaust when the mask body is worn.

[0008] Preferably, the plurality of the ribs are distributed in a ring at equal intervals along the radial direction of the connecting pipe, and the ribs are configured as a streamlined structure that gradually narrows from the outer end to the inner end.

[0009] In a further preferred embodiment, the airflow directions of the plurality of exhaust holes do not intersect each other, the internal channels of the exhaust holes are configured to gradually narrow from the inside to the outside, and the external openings of the exhaust holes are circular or nearly circular.

[0010] In a further preferred embodiment, one end of the connecting tube is inserted into the adjacent end of the bend, and the top protruding ring limits the insertion stroke of the bend; the other end of the connecting tube is inserted into the adjacent end of the mask body, and the positioning protruding ring limits the insertion stroke of the mask body.

[0011] In a further preferred embodiment, the connecting pipe, the top protruding ring, the middle protruding ring, the positioning protruding ring, and the rib are integrally injection molded structures.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, the present invention provides a mask exhaust port structure, which has the following beneficial effects:

[0014] In this invention, an integrated annular exhaust structure is set between the mask body and the curved pipe. The exhaust holes are formed by the ribs and positioning protrusions. This method abandons the traditional material reduction and hole-cutting design. The built-up exhaust hole structure achieves precise control of the airflow direction, avoiding the problems of chaotic airflow, impact on side walls and intersections in traditional structures, and greatly reducing noise generation. At the same time, the ribs are distributed in an annular and equally spaced manner, so that the airflow direction of the exhaust holes does not intersect and diverges outward in an annular pattern, solving the problem of exhaust blowing on the bed.

[0015] In this invention, the ribs adopt a streamlined structure that gradually narrows from the outer end to the inner end. The internal channel of the exhaust hole gradually narrows from the inside to the outside, and the external opening is circular or nearly circular, so that the airflow transitions smoothly in the channel. This not only ensures the smoothness of the airflow and reduces the user's breathing resistance, but also further improves the noise reduction effect and greatly improves the wearing comfort. It can achieve the dual effects of noise reduction and anti-blowing bed partner without the need to add filter cotton.

[0016] In this invention, all components of the annular exhaust structure are integrally injection molded structures, eliminating the need for any intermediate parts, thus simplifying the product structure and reducing BOM costs, mold costs, and production assembly costs. At the same time, the top convex ring and positioning convex ring respectively limit the insertion of the bent pipe and the main body of the mask, and the bracket is firmly engaged with the annular exhaust structure, making the assembly method simple and improving the convenience of product assembly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the mask exhaust port structure according to the implementation plan;

[0018] Figure 2 for Figure 1 Front view of the ventilation port structure of the middle face mask;

[0019] Figure 3 for Figure 2 A sectional view along line E;

[0020] Figure 4 for Figure 2 A sectional view along the D direction;

[0021] Figure 5 for Figure 1 A schematic diagram of the cross-section of the exhaust port structure of the middle face mask;

[0022] Figure 6 for Figure 5 Enlarged view of the structure at point A in the middle;

[0023] Figure 7 This is a top view of the annular exhaust structure according to the implementation plan;

[0024] Figure 8 for Figure 7 Cross-sectional view along the M-axis;

[0025] Figure 9 for Figure 7 A schematic diagram of the cross-section of the central annular exhaust structure;

[0026] Figure 10 for Figure 9 A schematic diagram of the central annular exhaust structure cut open from another angle;

[0027] Figure 11 and Figure 12All Figure 7 A schematic diagram of the airflow direction at the annular exhaust structure.

[0028] In the diagram: 10. Main body of the mask; 20. Bend; 30. Support; 40. Annular exhaust structure; 41. Connecting pipe; 42. Top protruding ring; 43. Middle protruding ring; 44. Positioning protruding ring; 45. Rib; 46. Exhaust hole. Detailed Implementation

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

[0030] Please see Figures 1 to 4 A mask exhaust structure includes a mask body 10, a curved tube 20, a support 30, and an annular exhaust structure 40. The annular exhaust structure 40 is the core exhaust component of the entire structure. It is positioned between the mask body 10 and the curved tube 20, with both ends connected to the mask body 10 and the curved tube 20 respectively, and is used to exhaust respirable gases. The support 30 is sleeved on the outside of the annular exhaust structure 40 and securely connected to it. The support 30, in conjunction with straps or other structures, secures the entire mask to the user's face.

[0031] See Figures 7 to 10 The annular exhaust structure 40 includes a connecting pipe 41, a top protruding ring 42, a middle protruding ring 43, a positioning protruding ring 44, and multiple ribs 45. The connecting pipe 41 is a hollow tubular structure; the top protruding ring 42 is integrally formed on the outer wall of the connecting pipe 41 near the bend 20; the middle protruding ring 43 is integrally formed on the outer wall of the middle section of the connecting pipe 41; multiple ribs 45 are formed radially and spaced below the middle protruding ring 43, with the inner end of the rib 45 and the outer wall of the connecting pipe 41 being integrally injection molded, and the outer end extending away from the connecting pipe 41; the positioning protruding ring 44 is integrally formed on the outer side of the multiple ribs 45, and connects the outer ends of all the ribs 45 into one piece; an exhaust hole 46 is formed between every two adjacent ribs 45, the positioning protruding ring 44, and the outer wall of the connecting pipe 41, and the multiple exhaust holes 46 are evenly distributed circumferentially along the connecting pipe 41 to exhaust the exhaled waste gas in the mask body 10 to the outside.

[0032] In this embodiment, multiple ribs 45 can be distributed in a ring at equal intervals, causing the airflow direction of multiple exhaust holes 46 to diverge outwards in a ring without intersecting each other. This avoids noise caused by airflow crossing and also prevents exhaust from blowing onto bed partners. Each rib 45 is designed as a streamlined structure that gradually narrows from the outer end to the inner end, so that the airflow flows smoothly without significant obstruction within the channels between the ribs. The internal channels of the exhaust holes 46 are formed by the matching shape of the ribs 45 to create a structure that gradually narrows from the inside to the outside, with the external opening being circular or nearly circular. This ensures the smoothness of exhaust gas discharge, reduces breathing resistance, and allows the exhaust gas to weaken rapidly after discharge, achieving a good noise reduction effect.

[0033] See Figure 5 and Figure 6 One end of the bent pipe 20 facing the connecting pipe 41 is inserted into the inner hole of the connecting pipe 41 near the end of the bent pipe 20. The top protruding ring 42 abuts against the annular protrusion on the outer wall of the bent pipe 20, limiting the insertion stroke of the bent pipe 20. A snap fastener that can be pressed and deformed is also formed on the outer wall of the bent pipe 20, which can hook the top protruding ring 42 for connection and fixation. The one end of the mask body 10 facing the connecting pipe 41 is inserted into the inner hole of the connecting pipe 41 near the end of the mask body 10. The positioning protruding ring 44 abuts against the outer wall of the end of the mask body 10, limiting the insertion stroke of the mask body 10. The bracket 30 is sleeved on the outside of the positioning protruding ring 44 and securely engaged with it.

[0034] See Figure 11 and Figure 12 When the user exhales, the generated exhaust gas enters the mask body 10 and flows to the rib 45 area of ​​the annular exhaust structure 40. It is discharged to the outside through the exhaust hole 46 formed by the adjacent rib 45 and the positioning protrusion ring 44. Since the exhaust hole 46 is evenly distributed around the circumference and the airflow directions do not intersect, the exhaust gas is discharged in a ring shape in all directions. It will not blow on the bed partner and avoid the noise caused by the cross of airflow. At the same time, the streamlined rib 45 and the gradually narrowing exhaust hole channel ensure smooth airflow, reduce breathing resistance, and improve wearing comfort.

[0035] In this embodiment, the connecting pipe 41, the top protruding ring 42, the middle protruding ring 43, the positioning protruding ring 44, and the rib 45 are integrally injection molded structures. The entire annular exhaust structure 40 is a single part, which can realize the functions of exhaust, noise reduction, and anti-blowing bed without the need for multiple parts to cooperate. This greatly simplifies the production and assembly process, reduces production costs, and the integrally molded structure also improves the structural strength and reliability of the components.

[0036] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Moreover, the terms “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 process, method, article, or apparatus.

[0037] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mask exhaust port structure, comprising a mask body (10), a bent pipe (20), and a bracket (30), characterized in that, It also includes an annular exhaust structure (40), which is disposed between the mask body (10) and the bend (20), and the two ends of the annular exhaust structure (40) are respectively connected to the mask body (10) and the bend (20). The bracket (30) is sleeved on the outside of the annular exhaust structure (40) and fixedly connected to it. The annular exhaust structure (40) includes a connecting pipe (41), a top protruding ring (42), a middle protruding ring (43), a positioning protruding ring (44), and multiple ribs (45). The top protruding ring (42) is formed on the outer wall of the connecting pipe (41) near the bend (20), the middle protruding ring (43) is formed on the outer wall of the middle section of the connecting pipe (41), and the top protruding ring (42) is fixedly connected to the bend (20). Multiple ribs (45) are formed radially spaced below the middle section protruding ring (43) along the connecting pipe (41), and the inner ends of the ribs (45) are connected to the outer wall of the connecting pipe (41) as an integral structure; The positioning protrusion (44) is formed on the outside of the plurality of ribs (45), and an exhaust hole (46) is formed between each pair of adjacent ribs (45) and the positioning protrusion (44). The plurality of exhaust holes (46) are used for breathing exhaust when the mask body (10) is worn.

2. The mask exhaust port structure according to claim 1, characterized in that: The multiple ribs (45) are distributed in a ring at equal intervals along the radial direction of the connecting pipe (41).

3. The mask exhaust port structure according to claim 2, characterized in that: The airflow directions of the multiple exhaust ports (46) do not intersect each other.

4. A mask exhaust port structure according to any one of claims 1-3, characterized in that: The rib (45) is configured as a streamlined structure that tapers from the outer end to the inner end.

5. The mask exhaust port structure according to claim 4, characterized in that: The internal channel of the exhaust port (46) is configured to gradually narrow from the inside to the outside.

6. The mask exhaust port structure according to claim 5, characterized in that: The external opening of the pore (46) is circular or nearly circular.

7. The mask exhaust port structure according to claim 1, characterized in that: One end of the connecting pipe (41) is inserted into the adjacent end of the bend (20), and the top protruding ring (42) limits the insertion stroke of the bend (20).

8. The mask exhaust port structure according to claim 7, characterized in that: The other end of the connecting tube (41) is inserted into the adjacent end of the mask body (10), and the positioning protrusion (44) limits the insertion stroke of the mask body (10).

9. The mask exhaust port structure according to claim 1, characterized in that: The connecting pipe (41), the top protruding ring (42), the middle protruding ring (43), the positioning protruding ring (44), and the rib (45) are integrally injection molded structures.

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