Adjustable protective mask

Abstract

The utility model relates to the technical field of masks, and provides an adjustable protective mask which comprises a mask body, ear hanging belts, extension parts and a fixing mechanism, the extension parts are symmetrically arranged on the two sides of the mask body, the extension parts are folded and attached to the inner side of the mask body, the ear hanging belts are symmetrically arranged on the extension parts on the two sides, and the fixing mechanism is connected with the ear hanging belts. The fixing mechanism is arranged between the end parts of the ear hanging belts and the mask body, and the fixing mechanism penetrates through the extension part. The extension part is arranged, and the folding state of the extension part is fixed through the fixing mechanism, so that the size of the mask body is consistent with that of a mask of a common model, and most wearers can directly use and wear the mask conveniently; when the mask is worn, the extension part is unfolded by removing the part of the fixing mechanism, so that the wearing width of the mask body is widened, the ear hanging belts are fixed behind the ears and are not tightened, and the comfort degree of a wearer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of masks, in particular to an adjustable protective mask. Background Art

[0002] A mask is a sanitary product, generally refers to a device worn on the mouth and nose to filter the air entering the mouth and nose, so as to prevent harmful gases, odors, and droplets from entering and exiting the wearer's mouth and nose. Masks have a certain filtering effect on the air entering the lungs. When respiratory infectious diseases are prevalent, wearing a mask is very effective when working in a dusty environment. Due to the same specifications of mask models, but different wearers, some people wear masks with small sizes, and the ear straps on both sides of the mask are tight on the wearer's ears, which makes them uncomfortable to wear. In view of this, this application is specially proposed. Utility Model Content

[0003] The present application proposes an adjustable protective mask to solve the technical problem in the prior art that the masks have the same specifications but are worn by different people, which results in some people wearing masks with small masks and the ear straps on both sides of the masks tightly tightening the ears of the wearer, making the masks uncomfortable to wear. The above technical objectives of the utility model are achieved through the following technical solutions:

[0004] An adjustable protective mask comprises: a mask body, ear straps, an extension part and a fixing mechanism, wherein the extension parts are symmetrically arranged at two sides of the mask body, the extension parts are folded and attached to the inner side of the mask body, the ear straps are symmetrically arranged on the extension parts at two sides, the fixing mechanism is arranged between the end parts of the ear straps and the mask body, and the fixing mechanism runs through the extension parts.

[0005] Preferably, the fixing mechanism includes a fixing block, a buckle plate, a first limiting plate and a second limiting plate, the fixing blocks are respectively arranged at the ends of the ear straps, a circular groove is opened in the middle of the ear straps, the buckle plate is slidably arranged in the circular groove, the buckle plate passes through the mask body and the extension part, the first limiting plate is symmetrically slidably arranged in the fixing block, the first limiting plate is in contact with the buckle plate, and the second limiting plate is arranged at the end of the buckle plate.

[0006] Preferably, the diameter of the second limiting plate is greater than the diameter of the pinch plate.

[0007] Preferably, the fixing block is symmetrically provided with T-shaped slots, the first limiting plates are slidably disposed in the T-shaped slots on both sides, and a spring is provided between the first limiting plates and the T-shaped slots.

[0008] Preferably, the pinch plate is composed of two cylinders with different diameters, the second limiting plate is connected to the cylinder with the smaller diameter, and the bottom of the cylinder with the larger diameter is provided with a chamfer.

[0009] Preferably, the extension portion is made of the same material as the mask body.

[0010] Preferably, the width of the extension portion is 2-4 cm.

[0011] Compared with the prior art, the beneficial effects of the utility model include: by providing an extension part and fixing the folded state of the extension part through a fixing mechanism, the mask body is made consistent in size with ordinary masks, which is convenient for most wearers to use and wear directly; by releasing the parts of the fixing mechanism, the extension part is unfolded, thereby widening the wearing width of the mask body, so that the ear straps are fixed behind the ears without being tight, thereby improving the comfort of the wearer, and by providing the extension part instead of lengthening the length of the ear straps, when the user needs a large-size mask, to a certain extent, the user's facial white space is also larger, and the extension part can cover the user's face, thereby achieving better protection effect and shielding performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the inner side of the mask body of the utility model;

[0013] Figure 2 This is a schematic diagram of the outer side of the mask body of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the fixing mechanism of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the gusset plate and the second limiting plate of the utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the first limiting plate of the utility model;

[0017] Figure 6 It is a cross-sectional schematic diagram of the fixing block of the utility model.

[0018] In the figure: 1. Mask body; 2. Ear straps; 3. Extension part; 4. Fixing block; 5. Buckle plate; 6. First limiting plate; 7. Second limiting plate; 8. T-slot. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0022] Please see attached Figure 1-6 An adjustable protective mask comprises: a mask body 1, ear straps 2, an extension part 3 and a fixing mechanism, the extension parts 3 are symmetrically arranged at both sides of the mask body 1, the extension parts 3 are folded and attached to the inner side of the mask body 1, the ear straps 2 are symmetrically arranged on the extension parts 3 on both sides, the fixing mechanism is arranged between the end of the ear straps 2 and the mask body 1, and the fixing mechanism runs through the extension parts 3.

[0023] By adopting the above technical scheme, when the extension part 3 is folded on the mask body 1 and the fixing mechanism fixes the folding position of the extension part 3, the mask body 1 is consistent with the size of the ordinary model mask. If the user needs a large-sized mask, the fixing mechanism is no longer fixed to the folding of the extension part 3 by separating the parts of the fixing mechanism. At this time, the extension part 3 is unfolded, thereby widening the wearing width of the mask body 1, so that the user can hang the ear straps 2 on both sides behind the ears after wearing the mask body 1, and the ear straps 2 are fixed behind the ears without being tight, thereby improving the comfort of the wearer. By setting the extension part 3 instead of lengthening the length of the ear straps 2, when the user needs a large-sized mask, to a certain extent, the user's facial white space is also larger, and the extension part 3 can cover the user's face, thereby achieving better protection effect and shielding performance.

[0024] In some embodiments, the fixing mechanism includes a fixing block 4, a buckle plate 5, a first limiting plate 6, a second limiting plate 7 and a spring. The fixing blocks 4 are respectively arranged at the ends of the ear straps 2. A circular groove is opened in the middle of the ear straps 2. The buckle plate 5 is slidably arranged in the circular groove. The buckle plate 5 passes through the mask body 1 and the extension part 3. The first limiting plate 6 is symmetrically slidably arranged in the fixing block 4. The first limiting plate 6 is in contact with the buckle plate 5. The second limiting plate 7 is arranged at the end of the buckle plate 5.

[0025] In some embodiments, the pinch plate 5 is composed of two cylinders with different diameters, the second limiting plate 7 is connected to the cylinder with the smaller diameter, and the bottom of the cylinder with the larger diameter is chamfered.

[0026] When the mask body 1 is folded and fixed to the extension part 3, the initial state of the fixing mechanism is that the fixing block 4 is located on the side of the mask body 1 facing the wearer, and the buckle plate 5 passes through the extension part 3 and the mask body 1 and is inserted into the circular groove in the middle of the fixing block 4. It should be noted that the cylinder with a larger diameter on the buckle plate 5 is inserted into the circular groove, and the side of the cylinder with a larger diameter facing the circular groove is provided with a chamfer, in order to facilitate the buckle plate 5 to be directly inserted into the circular groove. At this time, the first limiting plates 6 on both sides are located above the buckle plates 5, that is, the first limiting plates 6 are located above the cylinder with a larger diameter, and the second limiting plates 7 are located on the outside of the extension part 3. In this way, since the buckle plate 5 and the second limiting plates 7 are integrally formed, the fixing block 4 is located on the inner side of the mask body 1, and the second limiting plates 7 are located at the position of the extension part 3. When the extension part 3 is folded, the fixing block 4 is connected with the buckle plate 5 and the second limiting plates 7, so that the extension part 3 is stored in the mask body 1 in a folded state;

[0027] When the extension part 3 needs to be unfolded, the first limit blocks on both sides are moved outward so that the first limit blocks are no longer located above the buckle plate 5. At this time, the buckle plate 5 is disengaged from the circular groove of the fixing block 4. In this way, the extension part 3 is no longer fixedly folded on the inner side of the mask body 1, thereby unfolding the extension part 3.

[0028] In some embodiments, the diameter of the second limiting plate 7 is greater than the diameter of the pinch plate 5 .

[0029] With the above technical solution, when the buckle plate 5 is located in the circular groove of the fixing block 4, the second limiting plate 7 is prevented from passing through the mask body 1 and the extension part 3, thereby causing the extension part 3 and the mask body 1 to be unable to be fixed.

[0030] In some embodiments, the extension portion 3 is made of the same material as the mask body 1 .

[0031] By adopting the above technical solution, after the extension part 3 is unfolded, the extension part 3 can play the same protective effect as the mask body 1.

[0032] In some embodiments, the width of the extension 3 is 2-4 cm.

[0033] By adopting the above technical solution, by adding 32-4cm extension parts on both sides, it can meet the needs of most users who need to use larger masks.

[0034] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. An adjustable protective mask, characterized in that: include: A mask body (1), an ear strap (2), an extension part (3) and a fixing mechanism, wherein the extension parts (3) are symmetrically arranged at both sides of the mask body (1), the extension parts (3) are folded and attached to the inner side of the mask body (1), the ear straps (2) are symmetrically arranged on the extension parts (3) at both sides, the fixing mechanism is arranged between the end of the ear strap (2) and the mask body (1), and the fixing mechanism passes through the extension parts (3).

2. An adjustable protective mask according to claim 1, characterized in that: The fixing mechanism comprises a fixing block (4), a buckle plate (5), a first limiting plate (6) and a second limiting plate (7); the fixing blocks (4) are respectively arranged at the ends of the ear-hanging straps (2); a circular groove is opened in the middle of the ear-hanging straps (2); the buckle plate (5) is slidably arranged in the circular groove; the buckle plate (5) passes through the mask body (1) and the extension part (3); the first limiting plate (6) is symmetrically slidably arranged in the fixing block (4); the first limiting plate (6) is in contact with and cooperates with the buckle plate (5); and the second limiting plate (7) is arranged at the end of the buckle plate (5).

3. An adjustable protective mask according to claim 2, characterized in that: The diameter of the second limiting plate (7) is greater than the diameter of the buckle plate (5).

4. The adjustable protective mask according to claim 2, characterized in that: The fixing block (4) is symmetrically provided with T-shaped grooves (8), the first limiting plates (6) are slidably arranged in the T-shaped grooves (8) on both sides, and a spring is arranged between the first limiting plates (6) and the T-shaped grooves (8).

5. The adjustable protective mask according to claim 2, characterized in that: The buckle plate (5) is composed of two cylinders with different diameters, the second limit plate (7) is connected to the cylinder with the smaller diameter, and the bottom of the cylinder with the larger diameter is chamfered.

6. The adjustable protective mask according to claim 1, characterized in that: The extension portion (3) is made of the same material as the mask body (1).

7. The adjustable protective mask according to claim 1, characterized in that: The width of the extension portion (3) is 2-4 cm.

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