An adjustable breathing mask strap

Abstract

This utility model discloses an easily adjustable breathing mask strap, including a mask body, with a strap body one and a strap body two on both sides of the mask body. The end of the strap body one has a concave block for the strap body two to pass through. The side of the concave block away from the strap body one has a circular groove one, and the side of the concave block closer to the strap body one has a circular groove two. Between the circular groove one and the circular groove two is a circular hole and a straight hole passing through the middle of the circular hole. The strap body one has a slot aligned with the circular hole. The strap body two has several insertion holes along its length. A pin is inserted into the circular hole. One end of the pin, located in the circular groove one, has a limiting block. The limiting block has a handle on its outside. The other end of the pin passes through the insertion hole and is inserted into the slot. A straight plug is located at this end, located in the circular groove two. When wearing the strap of this utility model, simply rotate the pin to align the straight plug with the straight hole, and then pull out the pin to unlock it, making it easy to adjust the strap.

Description

Technical Field

[0001] This utility model belongs to the field of strap technology, specifically an adjustable breathing mask strap. Background Technology

[0002] A breathing mask is a widely used safety protective equipment, primarily used to protect the respiratory system from harmful substances. Its applications span multiple industries, including pharmaceuticals, coal mining, aviation, shipping, assembly, painting, woodworking, and chemicals. By covering the face with the mouth and nose, a breathing mask prevents the inhalation of toxic gases, vapors, and particulate matter (such as dust and smoke), thus protecting the user's health and safety.

[0003] There are many types of respirators available, and their fastening structures vary considerably. For example, medical masks typically use ear loops or headbands with elastic fabric straps, which are simple in structure and easy to wear, suitable for short-term use in medical environments. However, this design can easily cause pressure on the ears or head during prolonged wear, leading to discomfort. Industrial respirators, on the other hand, often use Velcro (also known as hook and loop fasteners) to secure the straps, allowing for flexible adjustments to fit the user's head size. However, Velcro can experience a decrease in adhesion over time due to dust accumulation or fiber wear. Utility Model Content

[0004] The purpose of this invention is to provide an easily adjustable breathing mask strap to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An adjustable breathing mask strap includes a mask body. The mask body has a strap body one and a strap body two on each side. The end of the strap body one has a concave block for the strap body two to pass through. The side of the concave block away from the strap body one has a circular groove one, and the side of the concave block closer to the strap body one has a circular groove two. Between the circular groove one and the circular groove two is a circular hole and a slotted hole passing through the center of the circular hole. The strap body one has a slot aligned with the circular hole. The strap body two has several insertion holes along its length. A pin is inserted into each circular hole. One end of the pin, located within the circular groove one, has a limiting block with a handle on its exterior. The other end of the pin passes through the insertion hole and is inserted into the slot, with a slotted block located at that end within the circular groove two.

[0007] Furthermore, both the first and second strap bodies are made of silicone material. The second strap body has an insertion groove at one end away from the mask body. The insertion groove is located on the side close to the first strap body and extends along the length of the second strap body. The outer side of the first strap body has an insertion block that can be inserted into the insertion groove. The insertion block extends along the length of the first strap body.

[0008] Furthermore, there are two of each of the plug slots and plug blocks, which are symmetrically arranged. The two plug slots are symmetrically arranged above and below the plug hole, and the two plug blocks are symmetrically arranged above and below the slot.

[0009] Furthermore, the insertion slot is a T-shaped slot, and the insertion block is a T-shaped block.

[0010] Furthermore, the end of the pin is frustum-shaped.

[0011] The beneficial effects of this utility model are:

[0012] This utility model features a concave block at the end of a tie body one for a tie body two to pass through. The concave block has a circular groove one on the side away from the tie body one and a circular groove two on the side closer to the tie body one. A circular hole and a slotted hole passing through the center of the circular hole are provided between the circular groove one and the circular groove two. The tie body one has a slot aligned with the circular hole. The tie body two has several insertion holes along its length. A pin is inserted into the circular hole. A limiting block is provided at one end of the pin located in the circular groove one. A handle is provided outside the limiting block. The other end of the pin passes through the insertion hole and is inserted into the slot. A slotted block is provided at this end, and the slotted block is located in the circular groove two. When adjusting the tightness of the straps, simply rotate the pin to align the slotted block with the slotted hole. Then, pull out the pin to release the lock, allowing for easy adjustment of the positions of the strap body 1 and strap body 2 to suit the wearing needs of different users. This avoids the problem of traditional elastic fabric straps causing pressure on the ears or head during prolonged wear, and the issue of Velcro losing adhesion due to dust accumulation or fiber wear over long-term use.

[0013] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0014] Figure 1 : Overall structural diagram of this utility model.

[0015] Figure 2 The connection between the concave block and the pin in this utility model explodes. Figure 1 .

[0016] Figure 3 : A diagram of the pin structure of this utility model.

[0017] Figure 4 : A cross-sectional view of the concave block of this utility model.

[0018] Reference numerals in the attached drawings: 1. Mask body; 2. Strap body one; 3. Strap body two; 4. Concave block; 21. Slot; 22. Insertion block; 31. Insertion hole; 32. Insertion groove; 41. Round groove one; 42. Round groove two; 43. Round hole; 44. Straight hole; 45. Pin; 46. Limiting block; 47. Handle; 48. Straight insertion block. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] Please refer to Figure 1-4 ;

[0021] An adjustable breathing mask strap includes a mask body 1, with a strap body 2 and a strap body 3 on both sides of the mask body 1. The end of the strap body 2 is provided with a concave block 4 for the strap body 3 to pass through. Specifically, the strap body 3 passes through the concave part of the concave block 4 and is located between the strap body 2 and the concave block 4. A concave block 4 has a circular groove 41 on the side away from the strap body 2, and a circular groove 42 on the side of the concave block closer to the strap body 2. A circular hole 43 and a straight hole 44 passing through the middle of the circular hole 43 are provided between the circular groove 41 and the circular groove 42. The strap body 2 has a slot 21 aligned with the circular hole 43. The strap body 3 has several insertion holes 31 along its length. A pin 45 is inserted into the circular hole 43. A limiting block 46 is provided at one end of the pin 45 located in the circular groove 41 to limit the insertion depth of the pin 45. A handle 47 is provided on the outside of the limiting block 46 to facilitate the user to rotate the pin 45. The handle 47 is located in the circular groove 41 to avoid accidental contact with the handle 47. The other end of the pin 45 passes through the insertion hole 31 and is inserted into the slot 21. A straight plug 48 is provided at this end. The straight plug 48 is located in the circular groove 42. After the breathing mask is put on, adjust the strap body 1 2 and strap body 2 3 to a suitable tightness. Then, insert the pin 45 through the round hole 43 and the corresponding insertion hole 31 in sequence into the slot 21 of the strap body 1 2. During the insertion process, the flat insert 48 of the pin 45 should be aligned with the flat hole 44 in the concave block 4. After the pin 45 is fully inserted, rotate the pin 45 by the handle 47 to make the flat insert 48 and the flat hole 44 misaligned, thereby locking the strap body 1 2 and strap body 2 3 and completing the wearing of the breathing mask. When adjusting the tightness of the straps, simply rotate the pin 45 so that the flat insert 48 aligns with the flat hole 44. Then, pull out the pin 45 to release the lock, allowing for easy adjustment of the positions of the strap body 1 2 and strap body 2 3 to suit the wearing needs of different users. This improves the comfort and practicality of wearing the mask and avoids the problems of traditional elastic fabric straps causing pressure on the ears or head during prolonged wear, as well as the decrease in adhesive strength of Velcro due to dust accumulation or fiber wear over long-term use. In addition, the flat hole 44 is set in the horizontal direction to prevent the flat insert 48 on the pin 45 from automatically rotating to the vertical direction and aligning with the flat hole 44 due to vibration or other factors during use, thus avoiding mis-locking.

[0022] In this embodiment, both the first strap body 2 and the second strap body 3 are made of silicone. Silicone has good flexibility and elasticity, making it softer and more comfortable to wear, with a good fit, thus improving the user experience. The second strap body 3 has an insertion groove 32 at the end furthest from the face mask body 1. The insertion groove 32 is located near the first strap body 2 and extends along the length of the second strap body 3. The outer side of the first strap body 2 has an insertion block 22 that can be inserted into the insertion groove 32, extending along the length of the first strap body 2. By aligning and inserting the insertion block 22 into the insertion groove 32, the first strap body 2 and the second strap body 3 can be guided and limited during the connection process, enhancing the stability and reliability of the connection.

[0023] Preferably, there are two insertion slots 32 and two insertion blocks 22, symmetrically arranged. The two insertion slots 32 are symmetrically arranged above and below the insertion hole 31, and the two insertion blocks 22 are symmetrically arranged above and below the slot 21. During connection, the two insertion blocks 22 are first slid into their respective insertion slots 32. At this time, the inner wall of the second strap body 3 will be against the outer wall of the first strap body 2. Then, the second strap body 3 is slid against the outer wall of the first strap body 2. During the sliding process, due to the limiting effect of the two insertion slots 32 and the insertion blocks 22, the insertion hole 31 and the slot 21 are always kept on the same horizontal plane, which facilitates the quick insertion and locking of the pin 45 and avoids vertical misalignment, thereby improving the locking efficiency.

[0024] In addition, the insertion slot 32 is a T-shaped slot and the insertion block 22 is a T-shaped block. The two structures match, which enhances the stability and reliability of the connection between the first strap body 2 and the second strap body 3, and prevents the insertion hole 31 from being misaligned with the slot 21.

[0025] In this embodiment, the end of the pin 45 is frustum-shaped, which is beneficial for guiding the pin 45 during insertion. Even if there is a slight misalignment between the slot 21 and the socket 31 during alignment, its slope can guide the pin 45 to enter smoothly, ensuring insertion efficiency.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. An adjustable breathing mask strap, comprising a mask body (1), wherein strap body one (2) and strap body two (3) are respectively provided on both sides of the mask body (1), characterized in that, The end of the first strap body (2) is provided with a concave block (4) for the second strap body (3) to pass through. The side of the concave block (4) away from the first strap body (2) is provided with a circular groove (41), and the side of the concave block (4) close to the first strap body (2) is provided with a circular groove (42). A circular hole (43) and a slotted hole (44) passing through the middle of the circular hole (43) are provided between the circular groove (41) and the circular groove (42). The first strap body (2) is provided with an insertion tool aligned with the circular hole (43). The groove (21) and the second strap body (3) are connected to several insertion holes (31) along their length direction. A pin (45) is inserted into the circular hole (43). A limiting block (46) is provided at one end of the pin (45) located in the first circular groove (41). A handle (47) is provided on the outside of the limiting block (46). The other end of the pin (45) passes through the insertion hole (31) and is inserted into the slot (21). A straight plug (48) is provided at this end. The straight plug (48) is located in the second circular groove (42).

2. The adjustable breathing mask strap according to claim 1, characterized in that, Both the first strap body (2) and the second strap body (3) are made of silicone. The second strap body (3) has an insertion groove (32) at one end away from the mask body (1). The insertion groove (32) is located on the side close to the first strap body (2) and extends along the length of the second strap body (3). The outer side of the first strap body (2) is provided with an insertion block (22) that can be inserted into the insertion groove (32). The insertion block (22) extends along the length of the first strap body (2).

3. The adjustable breathing mask strap according to claim 2, characterized in that, Two insertion slots (32) and two insertion blocks (22) are provided, which are symmetrically arranged. The two insertion slots (32) are symmetrically arranged above and below the insertion hole (31), and the two insertion blocks (22) are symmetrically arranged above and below the slot (21).

4. The adjustable breathing mask strap according to claim 3, characterized in that, The insertion slot (32) is a T-shaped slot, and the insertion block (22) is a T-shaped block.

5. The adjustable breathing mask strap according to claim 1, characterized in that, The end of the pin (45) is frustum-shaped.

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