A positive pressure mask forehead pad adjustment mechanism

Abstract

This invention discloses a positive pressure mask forehead pad adjustment mechanism, comprising a forehead support and a mask connecting frame connected together. The forehead support has a first connecting portion, and the mask connecting frame has a second connecting portion. The first connecting portion is slidably connected within the second connecting portion. The mask connecting frame has a first control portion and a second control portion, symmetrically arranged on both sides of the second connecting portion. The control ends of the first and second control portions pass through the outer wall of the second connecting portion and connect to the first connecting portion. This positive pressure mask forehead pad adjustment mechanism avoids the impact of misoperation on the connection position of the forehead support and the mask connecting frame, ensuring the reliability of the connection position during use.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a positive pressure face mask forehead pad adjustment mechanism. Background Technology

[0002] A positive pressure mask is a structure placed over the user's mouth and nose to connect to a breathing apparatus and deliver gas to the user. A positive pressure mask consists of a mask body and a mask connector attached to the mask body. In use, the positive pressure mask is secured to the user's head, ensuring the mask body fits snugly against the face. One end of the mask connector connects to the mask body, and the other end connects to the air intake device. Gas enters the mask body through the mask connector and is supplied to the user.

[0003] When using a positive pressure mask, a seal is required between the patient's face and the mask. The bridge of the nose is the thinnest part of the facial skin, making it prone to pressure sores. Therefore, a forehead support is incorporated into the mask, with a forehead pad positioned near the patient's face. This forehead pad serves as the upper support point for the entire mask. Clinically, the connection position between the forehead support and the mask needs to be adjusted according to different patients' face shapes to improve wearing comfort. Current technology typically uses a single-button mechanism to control the adjustment of the forehead support's connection position. Patients wearing positive pressure masks are often disoriented and may accidentally touch or press the button, causing a change in the connection position and potentially leading to misoperation. Summary of the Invention

[0004] In view of this, the present invention provides a positive pressure mask forehead pad adjustment mechanism, which avoids the impact of misoperation on the connection position of the forehead support and the mask connecting frame, and ensures the reliability of the connection position of the forehead support and the mask connecting frame during use.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A positive pressure mask forehead pad adjustment mechanism includes a forehead support and a mask connecting frame connected together. The forehead support is provided with a first connecting part, and the mask connecting frame is provided with a second connecting part. The first connecting part is slidably connected to the second connecting part.

[0007] The mask connecting frame is provided with a first control part and a second control part. The first control part and the second control part are symmetrically arranged on both sides of the second connecting part. The control ends of the first control part and the second control part pass through the outer wall of the second connecting part and are connected to the first connecting part.

[0008] Optionally, the first connecting part includes a connecting cylinder disposed on the forehead support, and a limiting boss is provided on the connecting cylinder, the limiting boss being disposed along the length direction of the connecting cylinder;

[0009] The second connecting part includes a connecting sleeve with openings at both ends, and the connecting sleeve is fitted onto the connecting cylinder;

[0010] Both the first control unit and the second control unit include an adjustment button. The adjustment button includes a pressing end and a locking end connected together. The locking end passes through the connecting sleeve and locks onto the limiting protrusion.

[0011] Optionally, the limiting boss is provided with a plurality of evenly distributed mounting slots, the plurality of mounting slots being arranged along the length direction of the limiting boss, and adjacent mounting slots being separated by limiting walls, the setting direction of the limiting walls being consistent with the width direction of the limiting boss.

[0012] Optionally, the limiting boss is disposed on the top and bottom surfaces of the connecting cylinder, and each adjusting button includes two locking ends, one locking end corresponding to the top surface of the connecting cylinder and the other locking end corresponding to the bottom surface of the connecting cylinder, and the two locking ends are locked onto the side of the limiting boss away from the pressing end.

[0013] Optionally, the snap-fit ​​end includes a snap-fit ​​arm and a snap-fit ​​head connected together, the snap-fit ​​head being snapped onto the side of the limiting protrusion away from the pressing end;

[0014] An elastic element is provided between the adjustment button and the connecting cylinder, and the elastic element is used to provide the clamping force of the clamping head.

[0015] Optionally, the elastic element is a silicone spring, and a limiting groove is provided at the position of the edge of the silicone spring corresponding to the position of the snap-fit ​​arm, and the snap-fit ​​arm passes through the limiting groove.

[0016] Optionally, the distance between the snap-fit ​​arm and the surface of the connecting cylinder is greater than the distance between the top surface of the limiting wall and the surface of the connecting cylinder.

[0017] Optionally, a cover is connected to the opening end of the connecting sleeve away from the forehead support, and the cover is detachably connected to the connecting sleeve.

[0018] Optionally, the cover is snapped onto the connecting sleeve.

[0019] Optionally, the connecting cylinder and the forehead support are an integral structure.

[0020] As can be seen from the above technical solution, the positive pressure mask forehead pad adjustment mechanism provided by the present invention, by setting a sliding connection of a first connecting part and a second connecting part, and simultaneously setting a first control part and a second control part on the second connecting part, the control ends of the first control part and the second control part pass through the outer wall of the second connecting part and are connected to the first connecting part, thereby realizing the adjustment of the connection position of the first connecting part and the second connecting part. By using two symmetrically arranged control parts, the connection position of the forehead support and the mask connecting frame can only be adjusted when both control parts are in action at the same time. In this way, when the patient uses the mask, even if he accidentally touches or presses one control part, he will not touch the other control part at the same time, thereby avoiding the influence of misoperation on the connection position of the forehead support and the mask connecting frame, and ensuring the reliability of the connection position of the forehead support and the mask connecting frame during use. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the positive pressure mask forehead pad adjustment mechanism and the mask after they are connected at one angle, according to an embodiment of the present invention.

[0023] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure at point AA;

[0024] Figure 3 This is a schematic diagram of the positive pressure mask forehead pad adjustment mechanism provided in an embodiment of the present invention after it is connected to the mask from another angle.

[0025] Figure 4 This is a schematic diagram of the connection structure between the connecting cylinder and the adjustment button provided in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of a forehead support at one angle provided in an embodiment of the present invention;

[0027] Figure 6 This is a partially enlarged structural schematic diagram of the connecting cylinder provided in an embodiment of the present invention;

[0028] Figure 7 A schematic diagram of the forehead support provided in an embodiment of the present invention from another angle;

[0029] Figure 8A schematic diagram of a structural arrangement of a face mask and a connecting sleeve at one angle according to an embodiment of the present invention;

[0030] Figure 9 A schematic diagram showing another angle at which the mask and connecting sleeve are connected, according to an embodiment of the present invention.

[0031] Figure 10 for Figure 9 A schematic diagram of the cross-sectional structure at point BB.

[0032] in:

[0033] 1. Forehead support, 2. Cover, 3. Face mask, 4. Connecting cylinder, 5. Limiting wall, 6. Mounting groove, 7. Connecting sleeve, 701. Button mounting groove, 702. Through hole, 703. Sliding limiting groove, 8. Adjustment button, 801. Pressing end, 802. Snap-fit ​​arm, 803. Snap-fit ​​head, 9. Elastic element, 10. Face mask connecting frame, 11. Limiting boss, 12. Limiting block. Detailed Implementation

[0034] This invention discloses a positive pressure mask forehead pad adjustment mechanism, which avoids the impact of misoperation on the connection position of the forehead support and the mask connecting frame, and ensures the reliability of the connection position of the forehead support and the mask connecting frame during use.

[0035] 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.

[0036] Please see Figures 1 to 4 The positive pressure mask forehead pad adjustment mechanism of the present invention includes a forehead support 1 and a mask connecting frame 10 connected together. The forehead support 1 is provided with a first connecting part, and the mask connecting frame 10 is provided with a second connecting part. The first connecting part is slidably connected in the second connecting part to realize the connection between the forehead support 1 and the mask connecting frame 10.

[0037] To facilitate adjustment of the connection position between the forehead support 1 and the mask connecting frame 10, the mask connecting frame 10 is provided with a first control part and a second control part. The first control part and the second control part are symmetrically arranged on both sides of the second connecting part, and the control ends of the first control part and the second control part pass through the outer wall of the second connecting part and are connected to the first connecting part.

[0038] The positive pressure mask forehead pad adjustment mechanism of the present invention comprises a first connecting part and a second connecting part that are slidably connected. Simultaneously, a first control part and a second control part are provided on the second connecting part. The control ends of the first and second control parts pass through the outer wall of the second connecting part and are connected to the first connecting part, thereby enabling adjustment of the connection position of the first and second connecting parts. By employing two symmetrically arranged control parts, the connection position between the forehead support 1 and the mask connecting frame 10 can only be adjusted when both control parts are in operation simultaneously. This ensures that even if a patient accidentally touches or presses on one control part while using the mask, they will not simultaneously touch the other control part, thus avoiding the impact of misoperation on the connection position of the forehead support 1 and the mask connecting frame 10, and guaranteeing the reliability of the connection position during use. The end of the mask connecting frame 10 furthest from the forehead support 1 is connected to the mask 3.

[0039] Specifically, such as Figure 2 As shown, the first connecting part includes a connecting cylinder 4 disposed on the forehead support 1, and a limiting boss 11 is provided on the connecting cylinder 4, the limiting boss 11 being disposed along the length direction of the connecting cylinder 4. The second connecting part includes a connecting sleeve 7 with openings at both ends, the connecting sleeve 7 being sleeved on the connecting cylinder 4, and a sliding limiting groove 703 being provided in the cavity of the connecting sleeve 7. A limiting block 12 is provided on the connecting cylinder 4. When the connecting sleeve 7 is connected to the connecting cylinder 4, the limiting block 12 is slidably connected within the sliding limiting groove 703, such as... Figure 7 and Figure 8 As shown. Both the first and second control units include adjustment buttons 8. Each adjustment button 8 includes a pressing end 801 and a snap-fit ​​end connected together. The snap-fit ​​end passes through the connecting sleeve 7 and snaps onto the limiting side of the limiting boss 11. It can be understood that the limiting side of the limiting boss 11 is the side of the limiting boss 11 away from the pressing end 801. The limiting side of the limiting boss 11 is perpendicular to the insertion direction of the snap-fit ​​end through the connecting sleeve 7. The connecting cylinder 4 and the forehead bracket 1 are integrally formed. A button mounting groove 701 is provided on the side of the connecting sleeve 7 for placing the pressing end 801.

[0040] To ensure smooth engagement of the snap-fit ​​end with the limiting boss 11, the limiting boss 11 is provided with several evenly distributed mounting grooves 6. These mounting grooves 6 are positioned on the surface of the limiting boss 11 through which the snap-fit ​​end passes. The width of the mounting groove 6 is the same as the width of the snap-fit ​​end, allowing the snap-fit ​​end to slide along the mounting groove 6 for installation, thus ensuring the accurate positioning of the connecting cylinder 4 and the connecting sleeve 7 after connection. Multiple mounting grooves 6 are arranged along the length of the limiting boss 11, and adjacent mounting grooves 6 are separated by limiting walls 5. The limiting walls 5 are oriented in the same direction as the width of the limiting boss 11. Figures 5 to 7 As shown.

[0041] Furthermore, limiting protrusions 11 are provided on two oppositely arranged sides of the connecting cylinder 4, with two parallel limiting protrusions 11 on each side. The mounting groove 6 is an open groove at both ends and the top, thus facilitating the passage of the locking end of the adjustment button 8. Each adjustment button 8 includes two locking ends, one corresponding to the top surface of the connecting cylinder 4 and the other corresponding to the bottom surface of the connecting cylinder 4. The two locking ends are locked onto the side of the limiting protrusion 11 away from the pressing end 801, which is the limiting side of the limiting protrusion 11.

[0042] Specifically, the latching end includes a latching arm 802 and a latching head 803 connected together, such as... Figure 4 As shown, the clamping head is clamped onto the side of the limiting boss 11 away from the pressing end 801. One end of the clamping arm 802 is fixedly connected to the pressing end 801, and the other end is fixedly connected to the clamping head 803. An elastic element 9 is provided between the adjusting button 8 and the connecting cylinder 4. The elastic element 9 is used to provide clamping force for the clamping head 803. One end of the elastic element 9 presses against the end face of the pressing end 801 of the adjusting button 8, and the other end presses against the connecting cylinder 4. When the elastic element 9 presses against the pressing end 801, the clamping surface of the clamping head 803 is clamped onto the side of the limiting boss 11 away from the pressing end 801.

[0043] In one embodiment, the elastic element 9 is a silicone spring. A limiting groove is provided at the edge of the silicone spring corresponding to the position of the snap-fit ​​arm 802, and the snap-fit ​​arm 802 passes through the limiting groove. One end of the silicone spring is limited on the end face of the pressing end 801. The elastic element 9 is placed near the bottom surface of the button mounting groove 701, and is positioned between the bottom surface of the button mounting groove 701 and the pressing end 801. The bottom surface of the button mounting groove 701 has a through hole 702 for the snap-fit ​​arm 802 and the snap-fit ​​head 803 to pass through.

[0044] The distance between the surface of the snap-fit ​​arm 802 and the connecting cylinder 4 is greater than the distance between the top surface of the limiting wall 5 and the surface of the connecting cylinder 4, thus preventing the snap-fit ​​arm 802 from contacting the limiting wall 5 and avoiding mutual interference, and facilitating the adjustment of the connection position between the connecting cylinder 4 and the connecting sleeve 7. When the adjustment buttons 8 on both sides are pressed simultaneously, the snap-fit ​​surface of the snap-fit ​​head 803 releases the limiting side of the limiting boss 11. At this time, the connecting cylinder 4 can move freely within the connecting sleeve 7, facilitating the adjustment of the connection position between the connecting sleeve 7 and the connecting cylinder 4, thereby adjusting the height of the mask connecting frame 10, and further adjusting the connection position between the forehead bracket 1 and the mask 3 to improve the wearing comfort of the mask 3. After adjusting to the appropriate position, the adjustment buttons 8 on both sides are released simultaneously. The snap-fit ​​surface of the snap-fit ​​head 803 is snapped onto the limiting side of the limiting boss 11 under the drive of the elastic element 9, fixing the connecting sleeve 7 onto the connecting cylinder 4.

[0045] To prevent impurities and other debris from entering the inner cavity of the connecting sleeve 7 through its opening, a cover 2 is connected to the end of the connecting sleeve 7 away from the forehead support 1. The cover 2 is detachably connected to the connecting sleeve 7. Specifically, the cover 2 can be attached to the connecting sleeve 7 by a snap-fit, or it can use other connection methods commonly used in the art that facilitate assembly and disassembly, which will not be elaborated here.

[0046] In the description of this solution, it should be understood that the terms "upper", "lower", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and 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 this solution.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this solution, "multiple" means two or more, unless otherwise explicitly specified.

[0048] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A positive pressure mask headgear headgear adjustment mechanism comprising a headgear and a mask connector yoke connected together, characterised in that, The forehead support is provided with a first connecting part, and the mask connecting frame is provided with a second connecting part, the first connecting part is slidably connected in the second connecting part; The mask connecting frame is provided with a first control part and a second control part, the first control part and the second control part are symmetrically arranged on the two sides of the second connecting part, the control ends of the first control part and the second control part are connected on the first connecting part through the outer wall of the second connecting part, and the adjustment of the connection position of the forehead support and the mask connecting frame can be realized only when the first control part and the second control part simultaneously act.

2. The positive pressure mask headgear headband adjustment mechanism of claim 1, wherein, The first connecting part comprises a connecting barrel arranged on the forehead support, and a limiting boss is arranged on the connecting barrel and arranged along the length direction of the connecting barrel; The second connecting part comprises a connecting sleeve with two open ends, and the connecting sleeve is sleeved on the connecting barrel; The first control part and the second control part each comprise an adjusting button, the adjusting button comprises a pressing end and a clamping end connected together, and the clamping end is clamped on the limiting boss through the connecting sleeve.

3. The positive pressure mask headgear headband adjustment mechanism of claim 2, wherein, The limiting boss is provided with a plurality of evenly distributed mounting grooves, the mounting grooves are arranged along the length direction of the limiting boss, and adjacent mounting grooves are separated by limiting walls, and the arrangement direction of the limiting walls is consistent with the width direction of the limiting boss.

4. The positive pressure mask headgear headband adjustment mechanism of claim 2, wherein, The limiting boss is arranged on the top surface and the bottom surface of the connecting barrel, each adjusting button comprises two clamping ends, one clamping end corresponds to the top surface of the connecting barrel, the other clamping end corresponds to the bottom surface of the connecting barrel, and the two clamping ends are clamped on the side surface of the limiting boss away from the pressing end.

5. The positive pressure mask headgear headband adjustment mechanism of claim 3, wherein, The clamping end comprises a clamping arm and a clamping head connected together, and the clamping head is clamped on the side surface of the limiting boss away from the pressing end; An elastic element is arranged between the adjusting button and the connecting barrel, and the elastic element is used to provide the clamping force of the clamping head.

6. The positive pressure mask headgear headband adjustment mechanism of claim 5, wherein, The elastic element is a silica gel spring, a limiting groove is arranged at the position corresponding to the clamping arm on the edge of the silica gel spring, and the clamping arm is arranged in the limiting groove.

7. The positive pressure mask headgear headband adjustment mechanism of claim 5, wherein, The distance between the clamping arm and the surface of the connecting barrel is greater than the distance between the top surface of the limiting wall and the surface of the connecting barrel.

8. The positive pressure mask headgear headband adjustment mechanism of claim 2, wherein, The open end of the connecting sleeve away from the forehead support is connected with a cover body, and the cover body is detachably connected with the connecting sleeve.

9. The positive pressure mask headgear headband adjustment mechanism of claim 8, wherein, The cover body is clamped on the connecting sleeve.

10. The positive pressure mask headgear headband adjustment mechanism of claim 2, wherein, The connecting barrel and the forehead support are an integral structure.

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