Collapsible mouth and nose cover for escape mask

Abstract

The utility model discloses telescopic oral-nasal mask of escape mask, including cover body, the inner wall of cover body has the flexible telescopic ring in proper order, the other end of flexible telescopic ring has the socket, the filter core casing is inserted in the socket, the filter core casing is folded in the cover body along the flexible telescopic ring, the surface of filter core casing has the filter core concave ring, the surface of socket has the socket concave ring, the socket concave ring is sleeved on the filter core concave ring, and the outer surface of socket concave ring is sleeved with spring, the utility model solves the problem that current oral-nasal mask cannot be telescopic, and the distance of filter core body to face is short, and carbon dioxide is easy to stay, through the folding of flexible telescopic ring, adjust the height of filter core casing, further control the height of escape mask whole, in the folding state, the escape mask is conveniently stored, in the extension state, the distance between oral-nasal mask and face is increased, and airflow path is prolonged, and airflow distribution is optimized.

Description

Technical Field

[0001] This utility model relates to the field of mouth and nose mask technology, specifically a telescopic mouth and nose mask for escape masks. Background Technology

[0002] Existing mouth and nose masks fit tightly against the mouth and nose, with a short distance between the filter element and the mouth and nose, a small volume between the mask and the face, and a narrow airflow path. Carbon dioxide tends to remain inside the mask during exhalation, resulting in low oxygen supply per breath. This requires increasing the breathing rate to absorb enough oxygen, thus increasing the respiratory burden. While the increased distance between the filter element and the mouth and nose extends the airflow path, the greater distance between the filter element and the face makes it easier for the mask to not fit snugly, increasing the risk of harmful gas leakage. Furthermore, the large distance between the filter element and the face makes it difficult to store when laid flat, as it takes up a lot of space. Therefore, this telescopic mouth and nose mask was designed to shorten the distance and facilitate storage when in use. Utility Model Content

[0003] The purpose of this invention is to provide a telescopic mouth and nose shield for an escape mask. By folding the flexible telescopic ring, the height of the filter shell can be adjusted, thereby further controlling the overall height of the escape mask. In the folded state, the escape mask can be easily stored. In the extended state, the distance between the mouth and nose shield and the face is increased, the airflow path is extended, and the airflow distribution is optimized.

[0004] This utility model provides the following technical solution: a telescopic mouth and nose cover for an escape mask, including a cover body, characterized in that: flexible telescopic rings are sequentially formed on the inner wall of the cover body, a sleeve is formed at the other end of the flexible telescopic rings, a filter element shell is inserted into the sleeve, and the filter element shell is folded along the flexible telescopic rings inside the cover body.

[0005] Furthermore, a filter element concave ring is formed on the surface of the filter element housing, and a jacket concave ring is formed on the surface of the jacket. The jacket concave ring is sleeved on the filter element concave ring, and a spring is sleeved on the outer surface of the jacket concave ring. Through the cooperation of the filter element concave ring and the jacket concave ring, the installation position between the filter element housing and the jacket is positioned. At the same time, the spring is used to clamp the jacket on the surface of the filter element housing, thereby improving the connection strength between the filter element housing and the jacket.

[0006] Furthermore, a baffle is formed on the inner wall of the jacket, and the baffle is located at the bottom end of the filter element housing to support and limit the bottom of the filter element housing.

[0007] Furthermore, a limiting rib is formed on the inner wall of the cover. The limiting rib is located on the outside of the flexible telescopic ring and above one end of the flexible telescopic ring, thus limiting the extension of the flexible telescopic ring.

[0008] Furthermore, a retaining ring is embedded in the limiting rib, which enhances the rigidity of the limiting rib and the outer wall of the cover.

[0009] Furthermore, the outer wall of the cover is formed with a connection port.

[0010] Furthermore, the cross-section of the flexible telescopic ring is U-shaped.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are: by folding the flexible telescopic ring, the height of the filter shell can be adjusted, further controlling the overall height of the escape mask. In the folded state, the escape mask can be easily stored, and in the extended state, the distance between the mouth and nose mask and the face is increased, and the airflow path is extended. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram showing the position of the mouth and nose mask of this utility model; Figure 2 This is a perspective view of the mouth and nose mask of this utility model; Figure 3 This is a three-dimensional cross-sectional view of the mouth and nose mask of this utility model; Figure 4 This is a cross-sectional view of the mouth and nose mask of this utility model; Figure 5 This is the utility model Figure 4 A magnified view of a portion of region A in the middle; In the diagram: 1. Filter cartridge housing; 11. Filter cartridge concave ring; 2. Jacket; 21. Jacket concave ring; 22. Baffle; 3. Cover; 31. Limiting rib; 4. Flexible telescopic ring; 5. Connection port; 6. Spring; 7. Fixing ring. Detailed Implementation

[0013] 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.

[0014] Please see Figures 2 to 4This utility model provides a technical solution: a telescopic mouth and nose shield for an escape mask, including a shield body 3. A flexible telescopic ring 4 is sequentially formed on the inner wall of the shield body 3. The flexible telescopic ring 4 is made of rubber and can be bent and folded. A sleeve 2 is formed at the other end of the flexible telescopic ring 4. A filter housing 1 is inserted and wrapped inside the sleeve 2. The filter housing 1 folds along the flexible telescopic ring 4 within the shield body 3. The height of the filter housing 1 within the shield body 3 can be adjusted. In the folded state, the height of the filter housing 1 is low, facilitating the storage of the escape mask. In the unfolded state, the height of the filter housing 1 is high, providing a larger breathing space within the escape mask, extending the airflow path, and optimizing airflow distribution.

[0015] like Figures 4 to 5 As shown, a filter element concave ring 11 is formed on the surface of the filter element housing 1, and a jacket concave ring 21 is formed on the surface of the jacket 2. The jacket concave ring 21 is sleeved on the filter element concave ring 11, and the filter element housing 1 is positioned by the jacket concave ring 21. A spring 6 is sleeved on the outer surface of the jacket concave ring 21. The spring 6 is used to apply pressure to the jacket concave ring 21 and the filter element concave ring 11, thereby increasing the connection strength between the jacket concave ring 21 and the filter element concave ring 11 and improving the sealing performance.

[0016] like Figure 3 and 4 As shown, a baffle 22 is formed on the inner wall of the jacket 2. The baffle 22 is located at the bottom of the filter element housing 1. The baffle 22 supports and limits the bottom of the filter element housing 1 to prevent the filter element housing 1 from sliding down the jacket 2.

[0017] The inner wall of the cover 3 is also formed with limiting ribs 31. The limiting ribs 31 are located on the outside of the flexible telescopic ring 4. The limiting ribs 31 enhance the rigidity of the cover 3 and limit the extension position of the flexible telescopic ring 4.

[0018] A fixing ring 7 is embedded in the limiting rib 31. The fixing ring 7 is located on the inner surface of the outer wall of the cover 3, which enhances the rigidity of the outer wall of the cover 3 and prevents the outer wall of the cover 3 from tilting inward.

[0019] A connection port 5 is formed on the outer wall of the cover 3. The connection port 5 is used to connect the exhalation valve and serve as a one-way exhalation port.

[0020] The cross-section of the flexible telescopic ring 4 is U-shaped.

[0021] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A retractable mouth and nose shield for an escape mask, comprising a shield body, characterized in that: A flexible telescopic ring is formed on the inner wall of the cover, and a sleeve is formed at the other end of the flexible telescopic ring. A filter element housing is inserted and clamped in the sleeve, and the filter element housing is folded along the flexible telescopic ring inside the cover.

2. The telescopic mouth and nose cover of the escape mask according to claim 1, characterized in that: A filter element concave ring is formed on the surface of the filter element housing, and a jacket concave ring is formed on the surface of the jacket. The jacket concave ring is sleeved on the filter element concave ring, and a spring is sleeved on the outer surface of the jacket concave ring.

3. The telescopic mouth and nose cover of the escape mask according to claim 2, characterized in that: A baffle is formed on the inner wall of the jacket, and the baffle is located at the bottom end of the filter element housing.

4. The telescopic mouth and nose cover of the escape mask according to claim 1, characterized in that: The inner wall of the cover is also formed with limiting ribs, which are located on the outside of the flexible telescopic ring.

5. The telescopic mouth and nose cover of the escape mask according to claim 4, characterized in that: The limiting rib is embedded with a fixing ring.

6. The telescopic mouth and nose cover of the escape mask according to claim 1, characterized in that: The outer wall of the cover is formed with a connection port.

7. The telescopic mouth and nose cover of the escape mask according to claim 1, characterized in that: The flexible telescopic ring has a U-shaped cross-section.

Images