Quick release structure of breathing mask and breathing mask

Abstract

The invention relates to a quick release structure of a breathing mask and the breathing mask, and relates to the technical field of breathing masks. The quick release structure of the breathing mask comprises a sliding supporting device used for being connected with a mask body of the breathing mask, and the sliding supporting device is provided with a fixed position and a separation position; the connecting device is used for being connected with a head band of the breathing mask, and the connecting device is configured to be capable of fixedly connecting the head band with the mask main body when the fixing position is matched with the sliding supporting device; and under the action of external force, the sliding support device can slide on the sliding support device in the direction towards the separation position so as to cross the fixed position and leave the sliding support device from the separation position.

Description

Technical Field

[0001] This invention relates to the field of respiratory mask technology, and particularly to a rapid release structure for a respiratory mask and a respiratory mask. Background Technology

[0002] When worn, a breathing mask is secured to the user's face via a headband, providing breathing air. Generally, the connection between the headband and the main body of the breathing mask is detachable, allowing the user to remove the mask from their face when needed. However, in certain emergency situations (asphyxiation, fainting, etc.), it is also necessary to quickly remove the breathing mask from the face, i.e., rapid release of the mask. Existing breathing masks require a considerable force to overcome the tightening force of the headband when removed from the face, making removal difficult. Summary of the Invention

[0003] The present invention provides a quick-release structure for a breathing mask and a breathing mask, which solves at least one of the above-mentioned technical problems.

[0004] This invention provides a quick-release structure for a breathing mask, comprising:

[0005] A sliding support device for connection to the mask body of the breathing mask, the sliding support device having a fixed position and a disengaged position; and

[0006] A connecting device for connecting to the headband of the breathing mask, the connecting device being configured to fix the headband to the mask body when engaged with the sliding support device in the fixed position, and to slide on the sliding support device in the direction toward the disengagement position under the action of an external force, so as to pass the fixed position and leave the sliding support device from the disengagement position.

[0007] In one embodiment, the sliding support device includes a slide rail, the connecting device includes a connector, the length l1 of the slide rail is greater than the length l2 of the connector, the connector engages with the slide rail at the fixed position, and the connector can slide on the slide rail under the action of an external force to pass the fixed position and leave the slide rail from the disengagement position.

[0008] In one embodiment, the slide rail is constructed as an arc-shaped slide rail that curves away from the mask body, the fixed position is located at the position of maximum curvature on the inner contour line of the arc-shaped slide rail, and the disengagement position is closer to the mask body than the fixed position.

[0009] In one embodiment, both ends of the arc-shaped slide rail are connected to the side of the mask body, and the disengagement position is located at the maximum width of the arc-shaped slide rail.

[0010] In one embodiment, the first end of the arc-shaped slide rail is connected to the side of the mask body, the second end of the arc-shaped slide rail is at a predetermined distance from the side of the mask body, and the disengagement position is the second end of the arc-shaped slide rail.

[0011] In one embodiment, the arc-shaped slide rail extends vertically, horizontally, or obliquely on the mask body.

[0012] In one embodiment, the radial cross-section of the arc-shaped slide rail is circular, elliptical, or I-shaped.

[0013] In one embodiment, a slot is provided on one side of the connector, and the width d1 of the slot is smaller than the maximum width d of the arc-shaped slide rail. max Furthermore, the width d1 of the slot is greater than the width d of the arc-shaped slide rail at all other positions except the disengagement position. avg .

[0014] In one embodiment, the width d1 of the slot is greater than the width d of the arc-shaped slide rail at other locations besides the disengagement position. avg Larger than 0.05mm-1.00mm.

[0015] In one embodiment, the slot has a slot opening, the width d2 of which is smaller than the width d at other locations on the arc-shaped slide rail except for the disengagement position. avg .

[0016] In one embodiment, the slot has a semi-circular cross-section with a central angle greater than 3π / 2.

[0017] In one embodiment, the sliding support device further includes a first support body and a second support body, the first support body and the second support body being respectively connected to the side of the mask body, the slide rail being connected between the first support body and the second support body, the fixed position being located at the middle position on the slide rail, and the disengagement position being located at the connection position between the slide rail and the first support body or at the connection position between the slide rail and the second support body.

[0018] In one embodiment, the inner surface of the slide rail is connected to the first support body and the inner surface of the slide rail is connected to the second support body by rounded corners.

[0019] In one embodiment, the sliding support device includes a slide groove, and the connecting device includes a connector, one side of which is provided with an assembly protrusion that is slidable in the slide groove.

[0020] The slide is provided with a fixing groove that can cooperate with the assembly protrusion, and the fixing position is the position where the fixing groove is located.

[0021] In one embodiment, one or both ends of the groove are connected to the side of the mask body;

[0022] Wherein, when one end of the slide is connected to the side of the mask body, the other end of the slide is a free end, and the disengagement position is located at the free end of the slide;

[0023] When one end of the slide is connected to the side of the mask body, the disengagement position is located at the maximum width of the slide.

[0024] According to a second aspect of the present invention, a breathing mask is provided, comprising a mask body, a headband, and a quick-release structure thereof. The mask body includes a pad for sealing against a patient's face, a frame connected to the pad, and an air intake assembly connected to the frame. A chamber is provided on the side of the pad away from the frame, the chamber communicating with the air intake assembly. One end of the air intake assembly away from the frame is fixedly or detachably connected to one end of an air intake pipe, and the other end of the air intake pipe is connected to a gas generator. A sliding support device is provided on one or both sides of the frame, and a connecting device is provided at the end of the headband.

[0025] Compared with the prior art, the advantages of the present invention are that, when the breathing mask is in normal use, the connecting device cooperates with the sliding support device in a fixed position to fix the headband to the mask body, thus fixing the mask body to the user's face; when it is necessary to remove the breathing mask from the user's face, only a small removal force needs to be applied to the headband, which will cause the connecting device to slide on the sliding support device in the direction of disengagement. This removal force can cause the connecting device to pass the fixed position, so that the connecting device can leave the sliding support device from the disengagement position. Therefore, the separation of the headband and the mask body is simpler, more convenient, and saves time and effort. Attached Figure Description

[0026] The invention will now be described in more detail with reference to embodiments and the accompanying drawings.

[0027] Figure 1A This is a schematic diagram of the face mask body and headband of a breathing mask in the prior art when they are detached;

[0028] Figure 1B This is a schematic diagram of the face mask body and headband of a breathing mask in the prior art;

[0029] Figure 1C This is a schematic diagram illustrating the connection principle of the rapid release structure of the breathing mask in various embodiments of the present invention;

[0030] Figure 2 This is a three-dimensional structural diagram of the rapid release structure of the breathing mask in Embodiment 1 of the present invention, showing the state in which the connecting device is detached from the sliding support device;

[0031] Figure 3 yes Figure 2 Enlarged view at point A;

[0032] Figure 4 yes Figure 2 Enlarged view at point B;

[0033] Figure 5 This is a three-dimensional structural diagram of the rapid release structure of the breathing mask in Embodiment 1 of the present invention, showing the fixed state of the connecting device and the sliding support device;

[0034] Figure 6 This is a three-dimensional structural diagram of the rapid release structure of the breathing mask in Embodiment 1 of the present invention, showing the state in which the connecting device moves to the disengaged position of the sliding support device under the action of external force;

[0035] Figure 7 This is a three-dimensional structural diagram of the rapid release structure of the breathing mask in Embodiment 2 of the present invention, showing the state in which the connecting device is detached from the sliding support device;

[0036] Figure 8 This is a three-dimensional structural diagram of the rapid release structure of the breathing mask in Embodiment 3 of the present invention, showing the state in which the connecting device is detached from the sliding support device;

[0037] Figure 9 This is a three-dimensional structural diagram of the rapid release structure of the breathing mask in Embodiment 4 of the present invention, showing the state in which the connecting device is detached from the sliding support device;

[0038] Figure 10 This is a three-dimensional structural diagram of the rapid release structure of the breathing mask in Embodiment 5 of the present invention, showing the state in which the connecting device is detached from the sliding support device;

[0039] Figure 11 This is a schematic diagram of the structure of the inner side of the pad of the present invention in contact with the patient's face;

[0040] Figure 12This is a schematic diagram of the structure of the liner frame of the present invention, in which an exhaust assembly is provided.

[0041] Figure label:

[0042] 1. Mask body; 2. Headband; 3. Connecting device; 4. Sliding support device;

[0043] 11. Hook and loop;

[0044] 12. Pad; 13. Frame; 14. Intake assembly; 15. Forehead pad; 151. Forehead pad adjustment mechanism; 152. Headband hole; 16. Exhaust assembly; 161, 101. Exhaust port; 162. Intake chamber;

[0045] 121. First contact part; 122. Second contact part; 123. Third contact part; 124. Chamber;

[0046] 21. Lower headband; 22. Upper headband; 221. Hook and loop fastener; 23. Top headband; 24. Support headband; 25. Ventilation window;

[0047] 31. Connector; 32. Connecting buckle;

[0048] 311. Slot; 312. Slot opening; 313. Assembly protrusion; 314. Protrusion;

[0049] 401. Fixed position; 402. Disengaged position;

[0050] 41. Slide rail; 42. First support body; 43. Second support body; 44. Slide groove; 45. Support body;

[0051] 411, First end; 412, Second end; 441, Fixed groove; 442, Slide opening. Detailed Implementation

[0052] The invention will now be further described with reference to the accompanying drawings.

[0053] like Figure 1A and Figure 1B As shown, an existing breathing mask is illustrated. When this type of breathing mask is worn on the user's face, the headband 2 usually needs to be tightened to ensure a seal between the inner chamber of the breathing mask and the user's face. For example, after the connecting device 3 at the end of the headband 2 is attached to the hook 11, the tightness of the headband 2 can be adjusted so that the headband 2 can tightly bind the mask body 1 to the patient's face. Figure 1BThe diagram shows the state in which the connecting device 3 is connected to the hook 11. Therefore, during normal use of the breathing mask, the headband 2 applies a tightening force F2 to the mask body 1. Understandably, the tightening force F2 is in the opposite direction to the release force F1. Thus, when releasing the breathing mask, the connecting device 3 needs to be separated from the hook 11. The user must first accurately locate the connecting device 3 and apply a large release force F1 to it. This release force F1 must be at least greater than the tightening force F2 to detach the connecting device 3 from the hook 11. Therefore, this release method is inconvenient and laborious. Especially when the tightening force F2 is relatively large (i.e., the headband 2 is tightly fastened), separating the connecting device 3 from the hook 11 becomes even more difficult.

[0054] This invention provides a quick-release structure for a breathing mask to solve the aforementioned technical problems. The quick-release structure for the breathing mask of this invention includes a sliding support device 4 and a connecting device 3. (See attached image.) Figure 1C As shown, the sliding support device 4 is used to connect to the mask body 1 of the breathing mask. The sliding support device 4 has a fixed position 401 and a disengaged position 402. The connecting device 3 is used to connect to the headband 2 of the breathing mask. The connecting device 3 can connect to the sliding support device 4 or quickly disengage from the sliding support device 4. Specifically, when the connecting device 3 is engaged with the sliding support device 4 in the fixed position 401, it can fix the headband 2 to the mask body 1. Under the action of external force, it can slide along the sliding support device 4 to pass the fixed position 401 and leave the sliding support device 4 in the disengaged position 402.

[0055] Example 1

[0056] like Figures 2-6 As shown, in this embodiment 1, the sliding support device 4 includes a slide rail 41, and the connecting device 3 includes a connector 31. The connector 31 can slide on the slide rail 41. Therefore, the length l1 of the slide rail 41 is set to be greater than the length l2 of the connector 31 (e.g., ...). Figure 5 As shown, the lengths of the slide rail 41 and the connector 31 are... Figure 5 (as shown in the Y-direction dimension), thus providing space for the connector 31 to slide on the slide rail 41. Figure 5 As shown, connector 31 engages with slide rail 41 at fixed position 401; as Figure 6 As shown, under the action of external force, the connector 31 can slide on the slide rail 41 in the direction toward the disengagement position 402, so as to pass the fixed position 401 and leave the slide rail 41 from the disengagement position 402. Figure 5 As shown, connector 31 is engaged with slide rail 41 at fixed position 401. When it is necessary to separate connector 31 from slide rail 41, as... Figure 6As shown, a downward force F can be applied to the headband 2 connected to the connector 31. The headband 2 transmits the force F to the connector 31, causing the connector 31 to slide on the slide rail 41. Due to the action of the external force, the connector 31 can pass the fixed position 401 and reach the disengagement position 402. At the disengagement position 402, the connector 31 can disengage from the slide rail 41, thereby separating the headband 2 from the mask body 1.

[0057] Therefore compared to Figure 1A and Figure 1B The process of connecting and disconnecting the headband 2 and the mask body 1 shown in the figure demonstrates that the quick-release structure of this invention makes the release of the breathing mask more convenient, easier, and faster. When separating the headband 2 from the mask body 1, the user does not need to precisely locate the connecting device 3 and apply a large removal force F1 that can overcome the tightening force F2. Instead, the user can apply a small force (less than the tightening force F2) to pull the headband 2 at any position near the connecting device 3. Because when the headband 2 is pulled, its tension can act on the connector 31; and the tension required to pull the headband 2 can be small, as long as it allows the connector 31 to slide past the fixed position 401. Once the connector 31 has passed the fixed position 401, it can slide on the slide rail 41 to the disengagement position 402 and disengage from the slide rail 41, thereby easily and conveniently separating the headband 2 from the mask body 1 and achieving rapid release of the breathing mask.

[0058] like Figure 2 As shown, in this embodiment 1, one implementation of the slide rail 41 is an arc-shaped slide rail that bends away from the mask body 1. The arc-shaped slide rail is roughly an arc-shaped columnar structure, that is, each radial cross-section of the arc-shaped slide rail can be regarded as a roughly circular cross-section. Figure 3 As shown, the slide rail 41 forms a curved handle-like structure. The curved slide rail serves two purposes: firstly, to create an installation space between itself and the mask body 1, preventing the connector 31 from interfering with the side wall of the mask body 1 during installation; and secondly, to create a fixed position 401. The fixed position 401 is located at the point of maximum curvature on the inner contour line of the curved slide rail. Because the headband 2 generates a tightening force when securing the mask body 1 to the user's face, this force causes the connector 31 to remain at the point of maximum curvature on the inner contour line of the curved slide rail, i.e., the fixed position 401. It can be understood that when the connector 31 is at the fixed position 401, due to the tightening force, unless an external force is applied to the headband 2, the connector 31 will not accidentally cross the fixed position 401.

[0059] like Figure 3 As shown, the position with the greatest curvature on the inner contour line of the curved slide rail can be, for example, the position roughly in the middle of the curved slide rail.

[0060] The "inner contour line" of the arc-shaped slide rail mentioned in this article refers to:

[0061] Since the curved slide rail has an arc-shaped columnar structure, its radial cross-section can be regarded as a circular cross-section. The curve formed by the centers of all the circular cross-sections is the "inner contour line". Understandably, the "inner contour line" of the curved slide rail is the central axis of the curved slide rail.

[0062] Specifically, the inner contour line of the arc-shaped slide rail satisfies the following relationship (1):

[0063]

[0064] In the above relation (1), t is any point on the inner contour line; X is the X-axis coordinate of point t on the inner contour line in the spatial coordinate system; Y is the Y-axis coordinate of point t on the inner contour line in the spatial coordinate system; and Z is the Z-axis coordinate of point t on the inner contour line in the spatial coordinate system.

[0065] The second derivative of the above formula for the inner contour lines is taken, and a vector is defined. The following relation (2) must be satisfied:

[0066]

[0067] In the above relation (2), These are the derivatives of X = X(t), Y = Y(t), and Z = Z(t), respectively, obtained by taking the second derivative of each of them.

[0068] Therefore, based on the geometric meaning of the space curve, it can be known that the curvature K(t) of the above inner contour line at point t satisfies the following relationship (3):

[0069]

[0070] According to relation (3), the maximum value of K(t) is calculated. It can be understood that the fixed position 401 mentioned above is located at the position where the value of K(t) is the maximum.

[0071] Furthermore, the surface profile of the curved slide rail must satisfy the following relationship (4):

[0072]

[0073] In the above relation (4), t is any point on the inner contour line, r is the radius of the cross-sectional circle where point t is located on the inner contour line, X is the X-axis coordinate of the point on the cross-sectional circle with center t and radius r in the spatial coordinate system, Y is the Y-axis coordinate of the point on the cross-sectional circle with center t and radius r in the spatial coordinate system, and Z is the Z-axis coordinate of the point on the cross-sectional circle with center t and radius r in the spatial coordinate system.

[0074] Understandably, the radius r of the cross-sectional circle near the position where the curvature K(t) value is the largest (i.e., the position where the fixed position 401 is located) is smaller, while the radius r of the cross-sectional circle near the detachment position 402 is larger.

[0075] Using the arc-shaped slide rail with the above-described structure, only a pulling force F of 0.5N (or even less than 0.5N) is required (far less than the tightening force F2) to detach the connector 31 from the slide rail 41 and separate the headband 2 from the mask body 1. In contrast, as Figure 1A and Figure 1B In the prior art shown, a removal force F1 of at least 10N is required (if there is an interference fit between the connecting device 3 and the hook 11, the tightening force F2 will be greater than 10N, and the removal force F1 will also be greater than 10N) in order to separate the headband 2 from the mask body 1.

[0076] Specifically, according to the force analysis, during normal wear, the headband 2 is taut. The tension F applies a tangential force to the taut headband 2. As long as this force exists (i.e., the force is not zero), it can cause tangential deformation of the headband 2. Therefore, a very small force is sufficient to slide the connecting device 3. The removal force F1 is a reverse force applied along the taut direction of the headband 2, and it must be at least greater than the tightening force F2 of the headband 2. Therefore, the quick-release structure of this invention can achieve rapid release of the breathing mask with less effort. Furthermore, the release position 402 is closer to the mask body 1 than the fixed position 401. Figure 3 As shown, the disengagement position 402 can be located closer to the lower end of the slide rail 41.

[0077] In this embodiment 1, as Figure 3 As shown, both ends of the arc-shaped slide rail are connected to the sides of the mask body 1. The arc-shaped slide rail is generally constructed as a cylindrical structure with a roughly uniform arc shape in width (or diameter). The width (or diameter) decreases slightly in the middle due to the maximum curvature, while its width (or diameter) increases significantly at its lower side near the mask body 1. The disengagement position 402 is located at the maximum width d of the arc-shaped slide rail. max Therefore, position 402 is the location where the width of the curved slide rail changes abruptly.

[0078] In other words, at all positions on the curved slide rail except for the disengagement position 402, the width is sufficient to match the connector 31, allowing the connector 31 to form an assembly relationship with the curved slide rail. However, at the disengagement position 402, due to its significantly increased width, the connector 31 can no longer match it, thus the fit between the connector 31 and the curved slide rail fails at the disengagement position 402. Consequently, the connector 31 is pushed out by the disengagement position 402 and disengages from the curved slide rail.

[0079] Therefore, the present invention overcomes, on the one hand, the following... Figure 1A and Figure 1B Instead of adhering to the technical bias of requiring the connecting device 3 and hook 11 to be basically the same size to ensure assembly performance, this invention creatively sets the length of the slide rail 41 to be longer, allowing the connecting device 3 to slide on it, thereby providing conditions for the connecting device 3 and the slide rail 41 to be quickly and effortlessly disengaged; on the other hand, this invention overcomes the technical bias of requiring the connecting device 3 and hook 11 to be basically the same size to ensure assembly performance. Figure 1A and Figure 1B Instead of addressing the technical bias in existing technologies where the connecting device 3 and hook 11 must fully engage to ensure assembly performance, this invention creatively sets a specific position (disengagement position 402) on the slide rail 41 where it cannot engage with the connecting device 3. This allows the connecting device 3 to easily and quickly separate from the disengagement position 402 as it passes the fixed position 401. Therefore, this invention not only overcomes the limitations of existing technologies such as... Figure 1A and Figure 1B It overcomes existing technological biases and achieves better technological results.

[0080] Furthermore, in this invention, the length of the slide rail 41 is different from the length of the connecting device 3, and the width of the slide rail 41 at a certain position is significantly increased, which greatly reduces the difficulty of its processing and thus helps to reduce costs.

[0081] like Figure 2 As shown, in this embodiment 1, the slide rail 41 (arc-shaped slide rail) extends vertically on the mask body 1, that is, along... Figure 5 The Y-axis extends as shown, and this direction can be, for example, the direction of the vertical axis in a basic cross-section of the human body.

[0082] Understandably, the slide rail 41 (arc-shaped slide rail) can also extend obliquely on the mask body 1, that is, along the... Figure 5 The Y-axis shown has a certain angle. When the slide rail 41 is set at an angle, the connecting device 3 can adjust its angle accordingly so as to cooperate with the inclined slide rail 41.

[0083] As mentioned above, the slide rail 41 (arc slide rail) is generally an arc-shaped columnar structure, that is, its radial cross-section is circular; or the radial cross-section of the slide rail 41 can also be elliptical, or "I" shaped (that is, similar to the shape of a railway track), or it can also be an irregular shape, etc.

[0084] It should be noted that the "circle" mentioned in this article can refer to a perfect circle, or a circle with slight errors, etc. Other shapes are similar.

[0085] like Figure 2 and Figure 4 As shown, and please refer to Figure 3A slot 311 is provided on one side of the connector 31. The width d1 of the slot 311 is less than the maximum width d of the arc-shaped slide rail. max Furthermore, the width d1 of the slot 311 is greater than the width d of the curved slide rail at all positions except the disengagement position 402. avg .

[0086] Because the width d1 of the slot 311 is greater than the width d at other positions on the curved slide rail except for the disengagement position 402. avg Therefore, the slot 311 and the arc-shaped slide rail can form a fitting, and the slot 311 can slide on the arc-shaped slide rail under the action of force. Furthermore, the width d1 of the slot 311 is greater than the width d1 of the arc-shaped slide rail at all positions except the disengagement position 402. avg The difference is 0.05mm-1.00mm larger. For example, the width d1 of the slot 311 is 0.05mm-1.00mm larger than the width of the fixed position 401 on the arc-shaped slide rail.

[0087] Its width d1 is less than the maximum width d of the curved slide rail. max Therefore, at the maximum width of the arc-shaped slide rail, i.e., at the disengagement position 402, the slot 311 will no longer be able to engage with the disengagement position 402. In other words, at the disengagement position 402, the slot 311 cannot engage with the disengagement position 402, and the disengagement position 402 will push the slot 311 out, so that the connector 31 can disengage from the arc-shaped slide rail.

[0088] Further reading is available upon request. Figure 4 The slot 311 has a slot opening 312. The width d2 of the slot opening 312 is smaller than the width d1 of the slot 311, and also smaller than the width d at other positions on the arc-shaped slide rail except for the disengagement position 402. avg By slightly deforming the slot opening 312, the arc-shaped slide rail can enter the slot 311 through the slot opening 312 and will not come out through the slot opening 312.

[0089] More specifically, the width d2 of the card slot opening 312 is made smaller than the width d1 of the card slot 311. For example, a protrusion 314 protruding towards the card slot 311 can be constructed at the card slot opening 312. Figure 4 As shown. The protrusion 314 can keep the arc-shaped slide rail in the slot 311 and prevent it from coming out of the slot opening 312.

[0090] Furthermore, to ensure that the curved slide rail will not dislodge from the slot opening 312 when the connector 31 (slot 311) is subjected to force, the slot 311 is designed with a semi-circular cross-section having a central angle greater than 3π / 2. In other words, after the slot 311 mates with the curved slide rail, the slot 311 can cover the curved slide rail at least 120° circumferentially. That is, most of the circumferential area of ​​the curved slide rail is covered by the slot 311, therefore even if the connector 31 is subjected to force, the curved slide rail is unlikely to dislodge from the slot opening 312.

[0091] Optionally, the slide rail 41 can be provided on only one side of the mask body 1, that is, the sliding support device 4 includes only one slide rail 41, in which case one end of the head strap 2 can be separated from the mask body 1 from one side of the mask body 1.

[0092] Optionally, the slide rails 41 can also be arranged on the left and right sides of the mask body 1. That is, the sliding support device 4 can include two slide rails 41, which are respectively connected to the connecting devices 3 connected to the two ends of the headband 2. In this case, the headband 2 can be separated from the mask body 1 from both sides simultaneously. When there are two slide rails 41, they can be symmetrically arranged on the left and right sides of the mask body 1.

[0093] like Figure 4 The connecting device 3 further includes a connecting buckle 32, which is connected to or integrally formed with the connecting head 31. The connecting buckle 32 is provided with a rope hole, through which the headband 2 can be passed and folded in the opposite direction to fix the headband 2 to the connecting device 3.

[0094] Example 2

[0095] like Figure 7 As shown, the difference between this embodiment 2 and embodiment 1 is that in this embodiment 2, the slide rail 41 (arc-shaped slide rail) extends horizontally on the mask body 1, that is, along... Figure 7 The X-axis direction shown can be, for example, the direction in a basic cross-section of the human body that is parallel to the horizontal axis.

[0096] The similarities between this embodiment 2 and the above embodiment 1 will not be repeated.

[0097] Example 3

[0098] like Figure 8 As shown, the difference between this embodiment 3 and embodiment 1 is that in this embodiment 3, only one end of the slide rail 41 is connected to the mask body 1, while the other end is a free end. Figure 8As shown, the first end 411 of the arc-shaped slide rail is connected to the side of the mask body 1, and the second end 412 of the arc-shaped slide rail is at a predetermined distance from the side of the mask body 1. Therefore, it can be understood that the disengagement position 402 is the second end 412 of the arc-shaped slide rail. When the connector 3 slides to the second end 412 of the arc-shaped slide rail, it will naturally separate from the arc-shaped slide rail.

[0099] It should be noted that, because the curved slide rail also has a fixed position 401, when the headband 2 is tightened, a tightening force is applied to the connector 31. Due to this tightening force, the connector 31 is essentially kept tightly connected to the curved slide rail at the fixed position 401. Only when the force applied to the headband 2 allows the connector 31 to slide past the fixed position 401 can the connector 31 be separated from the curved slide rail. In other words, the fixed position 401 ensures the normal use of the connector 31 and prevents accidental detachment.

[0100] The similarities between this embodiment 3 and the above embodiment 1 will not be repeated.

[0101] Example 4

[0102] like Figure 9 As shown, the difference between this embodiment 4 and embodiment 1 is that in this embodiment 4, the sliding support device 4 further includes a first support body 42 and a second support body 43. The first support body 42 and the second support body 43 are respectively connected to the side of the mask body 1, and the slide rail 41 is connected between the first support body 42 and the second support body 43 to form a cantilever structure. Figure 9 As shown, the first support 42, the second support 43, and the slide rail 41 between them form a roughly U-shaped structure.

[0103] In this embodiment 4, since the first support 42 and the second support 43 are provided, the slide rail 41 can be constructed not as an arc-shaped slide rail, but as a simpler columnar structure.

[0104] The fixed position 401 can be a position on the slide rail 41, such as the middle position of the slide rail 41. The disengagement position 402 is located at the connection position between the slide rail 41 and the first support 42 or at the connection position between the slide rail 41 and the second support 43. Since the connection position between the slide rail 41 and the first support 42 and the connection position between the slide rail 41 and the second support 43 form a corner structure, the size at this position is larger. Therefore, when the connector 31 moves to the above two positions, it cannot form a matching relationship with it, and can disengage from the slide rail 41.

[0105] In order for the connector 31 to move from the slide rail 41 to the connection position between the slide rail 41 and the first support 42 or to the connection position between the slide rail 41 and the second support 43, the inner surface of the slide rail 41 (i.e. the side closer to the mask body 1) and the first support 42, as well as the inner surface of the slide rail 41 and the second support 43, are connected by rounded corners. Therefore, when the connector 31 moves to the position of the slide rail 41 closest to the first support 42 (or the second support 43), since the inner surface of the slide rail 41 and the first support 42 (or the second support 43) are rounded, the connector 31 still has a tendency to slide, so it can slide to the disengagement position 402 and disengage from the slide rail 41.

[0106] The similarities between this embodiment 4 and the above embodiment 1 will not be repeated.

[0107] Example 5

[0108] like Figure 10 As shown, the difference between this embodiment 5 and the above embodiment 1 is that in this embodiment 5, the sliding support device 4 is constructed as a groove 44. The groove 44 can be a groove directly provided on the side wall of the mask body 1, or the groove 44 can be a groove opened on the outside of the support body 45 (which can adopt a structure similar to the arc-shaped slide rail described in embodiment 1) on the side of the mask body 1. The present invention does not limit this.

[0109] Accordingly, the connecting device 3 includes a connector 31. Unlike embodiment 1, in embodiment 5, one side of the connector 31 is provided with a mounting protrusion 313. The mounting protrusion 313 can be, for example, a spherical protrusion, a cylindrical protrusion, a conical protrusion, or other irregularly shaped protrusions. The mounting protrusion 313 can be integrally formed with the connecting buckle 32 or fixedly connected to the connecting buckle 32.

[0110] by Figure 10 Taking the spherical protrusion 313 as an example, the assembly protrusion 313 can slide in the groove 44. Therefore, it can be understood that the diameter of the assembly protrusion 313 should be smaller than the width of the groove 44 (more specifically, the width of other parts except for the disengagement position 402). However, the assembly protrusion 313 will not disengage from the groove opening 442 of the groove 44. Therefore, the diameter of the assembly protrusion 313 should be larger than the width of the groove opening 442.

[0111] Furthermore, the slide groove 44 is provided with a fixing groove 441 that can mate with the mounting protrusion 313, and the fixing position 401 is the location of the fixing groove 441. The fixing groove 441 can be a groove that matches the shape of the mounting protrusion 313. For example, the fixing groove 441 has a circular cross-section, so that it can mate with the spherical mounting protrusion 313. The fixing groove 441 can be located, for example, in the middle of the slide groove 44. When the headband 2 is tightened, it applies a tightening force to the connector 31, and the mounting protrusion 313 of the connector 31 is pulled from the slide groove 44 into the fixing groove 441 and locked in the fixing groove 441, thereby fixing it to the mask body 1. Therefore, the location of the fixing groove 441 is the fixing position 401.

[0112] The slide groove 44 can be configured similarly to the slide rail in Embodiment 1, with both ends of the slide groove 44 connected to the side of the mask body 1. Therefore, the disengagement position 402 is located at the maximum width of the slide groove 44. For example, it can be located at the end of the slide groove 44, closer to the mask body 1. The width of the slide groove opening 442 at this location can be significantly increased to be larger than the mounting protrusion 313, allowing the mounting protrusion 313 to separate from the slide groove 44 at this point. Furthermore, to prevent the side of the mask body 1 from obstructing the disengagement of the mounting protrusion 313, a corresponding clearance groove can be provided at the corresponding position of the mask body 1.

[0113] The slide 44 can also be configured similarly to the slide rail in Embodiment 3, that is, one end of the slide 44 is connected to the side of the mask body 1, while the other end is a free end. Therefore, the disengagement position 402 is located at the free end of the slide 44. Since one end of the slide 44 is not connected to the mask body 1, that is, there is a predetermined distance between one end of the slide 44 and the mask body 1, in this way, the mask body 1 does not need to be provided with an avoidance groove.

[0114] Understandably, when it is necessary to mate the mounting protrusion 313 with the slide groove 44, the mounting protrusion 313 can reverse from the disengaged position 402 into the slide groove 44 and mate with the slide groove 44 at the fixed position 401.

[0115] In addition, the slide 44 can be configured in a similar manner to the slide rail 41 described in any of the embodiments 1-4 above. For example, the slide 44 can extend vertically, horizontally, or obliquely.

[0116] The similarities between this embodiment 5 and the above embodiment 1 will not be repeated.

[0117] Example 6

[0118] The present invention also provides a breathing mask.

[0119] The mask includes a mask body 1, a headband 2, and a quick-release structure for the breathing mask as described in any one of the embodiments 1-5 above, wherein the sliding support device 4 is disposed on one or both sides of the mask body 1, and the connecting device 3 is disposed at the end of the headband 2.

[0120] A breathing mask can be, for example, a full-face mask, a nose mask, or a mouth-nose mask. For example, in one type of breathing mask, such as... Figure 2 As shown, the mask body 1 includes a pad 12 for sealing against the patient's face, a frame 13 connected to the pad 12, and an air intake assembly 14 connected to the frame 13. A chamber 124 is provided on the side of the pad 12 away from the frame 13, and the chamber 124 communicates with the air intake assembly 14. The pad 12 conforms to the patient's face and is therefore made of a relatively soft, flexible material, such as silicone. The frame 13 provides support and is therefore made of a relatively rigid material, such as polypropylene (PP) or polycarbonate (PC). The air intake assembly 14 may include, for example, a curved tube.

[0121] like Figure 2 As shown, the sliding support device 4 is provided on one or both sides of the frame 13.

[0122] Please continue reading Figure 2 The breathing mask also includes a forehead pad 15 for contacting the patient's forehead, which is located at the upper end of the frame 13. The forehead pad 15 can be connected to the frame 13 via a forehead pad adjustment mechanism 151, which can change the relative position between the forehead pad 15 and the frame 13, thereby changing the contact angle between the pad 12 and the patient's face, thus achieving a better seal.

[0123] The forehead pad adjustment mechanism 151 can be, for example, a push button, which moves the forehead pad 15 closer to or further away from the upper end of the frame 13 by pushing or pulling, so as to change the position of the forehead pad 15; or the forehead pad adjustment mechanism 151 can be, for example, a groove provided on the forehead pad 15, which can bend the forehead pad 15 to achieve the purpose of adjusting the position of the forehead pad 15.

[0124] In addition, the forehead pad 15 can also be directly connected to the frame 13, in which case the relative position between the forehead pad 15 and the frame 13 cannot be adjusted.

[0125] Since the inner side of the forehead pad 15 needs to contact the patient's forehead, a soft contact part can be provided on its inner side. The contact part is made of a soft, flexible material, such as silicone.

[0126] Please continue reading Figure 2The headband 2 includes an upper headband 22 and a lower headband 21. One end of the upper headband 22 is connected to one end of the lower headband 21. The upper headband 22 is connected to the forehead pad, and the lower headband 21 is connected to the frame 13. Because the lower headband 21 is closer to the patient's cheek, it is easier to separate the lower headband 21 from the mask body 1 when releasing the breathing mask. Therefore, the connecting device 3 is located at the free end of the lower headband 21. The connecting device 3 is connected in conjunction with the sliding support device 4, so that the lower headband 21 can fix the pad 12 to the patient's face. By separating the connecting device 3 from the sliding support device 4, the pad 12 can be released from the patient's face.

[0127] like Figure 2 As shown, the forehead pad 15 has headband holes 152 on both sides for the upper headband 22 to pass through. The other end (i.e., the free end) of the upper headband 22 passes through the headband hole 152, and a hook-and-loop fastener 221 is provided on the free end of the upper headband 22. After the upper headband 22 passes through the headband hole 152, it is folded in the opposite direction to secure itself. The hook-and-loop fastener 221 can be, for example, Velcro, magnetic snap, or other connectors that can be repeatedly removed and installed. The upper headband 22 can fix the forehead pad 15 to the patient's forehead.

[0128] like Figure 2 As shown, both the upper headband 22 and the lower headband 21 form a ring structure that wraps around the back of the patient's head to secure the mask body 1 to the patient's face. Furthermore, the upper headband 22 and the lower headband 21 are connected by two support headbands 24, making them a single unit. A ventilation window 25 is formed between the support headbands 24 and between the upper and lower headbands 22 and 21. This ventilation window 25 corresponds to the back of the patient's head, meaning the headband 2 does not cover this area, thus improving the patient's comfort while lying down. The upper headband 22 and the lower headband 21 can restrain the breathing mask circumferentially around the patient's head, preventing the breathing mask from shifting in the lateral direction.

[0129] Please continue reading Figure 2 The headband 2 also includes a top headband 23, which is connected to the upper headbands 22 on both sides of the patient's face. The top headband 23 passes over the top of the patient's head, thus constraining the breathing mask in the vertical axis direction of the human body and preventing the breathing mask from shifting in the vertical direction.

[0130] It should be noted that in some other embodiments of the breathing mask of the present invention, the breathing mask may not include the forehead pad 15, that is, the breathing mask is implemented without forehead support. The headband 2 can be adjusted accordingly according to the structure of the breathing mask.

[0131] For example, the headband 2 may include an upper headband 22 and a lower headband 21 connected to each other. Since the lower headband 21 is closer to the patient's cheek, it is easier to separate the lower headband 21 from the mask body 1 when releasing the breathing mask. Therefore, the connecting device 3 is located at the free end of the lower headband 21. This type of headband 2 structure can be applied, for example, to full-face masks or mouth-nose masks without forehead support.

[0132] Alternatively, the headband 2 may include an upper headband 22 and a top headband 23 connected to each other. Since the lower headband 21 is closer to the patient's cheek, it is easier to separate the lower headband 21 from the mask body 1 when releasing the breathing mask. Therefore, the connecting device 3 is located at the free end of the lower headband 21. This type of headband 2 structure can be applied, for example, to full-face masks or nasal masks without forehead support.

[0133] One or more of the pad 12, frame 13, and air intake assembly 14 are provided with multiple exhaust ports for discharging the patient's exhaled air. For example, the exhaust ports can be referred to as... Figure 1A and Figure 1B The vent holes 101 are set on the frame 13 and are evenly arranged along the extension direction of the frame 13.

[0134] The intake assembly 14 is used to connect the intake line, the other end of which is connected to the gas generator. Therefore, gas can be supplied to the intake assembly 14 through the intake line and then supplied by the intake assembly 14 to the chamber 124 of the liner 12 for the patient's breathing.

[0135] The air intake assembly 14 can be rotatably connected to the frame 13, thereby adjusting the relative position between the breathing mask and the gas generator by rotating the air intake assembly 14, so that the air intake line is in a naturally relaxed state.

[0136] Optionally, such as Figure 12 As shown, an exhaust assembly 16 is provided in the frame 13, and an intake assembly 14 is connected to the exhaust assembly 16. For example, the intake assembly 14 and the exhaust assembly 16 can rotate relative to each other.

[0137] The exhaust assembly 16 can be directly fixed to the frame 13 (e.g., ultrasonic welding, adhesive), meaning that the exhaust assembly 16 and the frame 13 cannot rotate relative to each other. For example, when the exhaust assembly 16 and the frame 13 are made of the same material, it is preferable to connect the exhaust assembly 16 to the frame 13 ultrasonically. Both the exhaust assembly 16 and the frame 13 can be made of polypropylene (PP) or polycarbonate (PC). When the exhaust assembly 16 and the frame 13 are made of different materials, it is preferable to connect the exhaust assembly 16 to the frame 13 by assembly. Furthermore, in one configuration, the exhaust assembly 16 can be rotatably connected to the frame 13, allowing relative rotation between them.

[0138] The exhaust assembly 16 is also provided with an intake chamber 162, which is connected to the intake assembly 14 and to the chamber 124 of the gasket 12. Therefore, the gas enters the chamber 124 of the gasket 12 after passing through the intake assembly 14 and the intake chamber 162 in sequence.

[0139] like Figure 12 As shown, the exhaust assembly 16 is provided with multiple exhaust ports 161. The exhaust ports 161 communicate with the air intake chamber 162, allowing the patient's exhaled air to be exhausted outside the breathing mask through the exhaust ports 161. Figure 12 The arrow indicates the direction of gas discharge.

[0140] exist Figure 12 In the example shown, the air intake assembly 14 can be a flexible hose that functions as an air intake line, and therefore can be directly connected to the gas generator, thus omitting the air intake line mentioned above.

[0141] In other examples, the end of the intake assembly 14 away from the frame 13 is fixedly connected to one end of the intake pipe. For example, the end of the intake assembly 14 away from the frame 13 and the end of the intake pipe are fixedly connected by a fixed fitting, forming a non-removable whole.

[0142] Optionally, the end of the intake assembly 14 away from the frame 13 is connected to the end of the intake pipe by a tight fit. For example, the part of the intake assembly away from the frame 13 is a pipe made of a smooth, rigid material, and the end of the intake pipe is made of silicone. When the two are connected, the deformation between the materials and the friction between them provide the force required for the connection.

[0143] Optionally, the end of the intake assembly 14 furthest from the frame 13 is detachably connected to one end of the intake pipe. For example, the intake assembly 14 may be provided with connecting parts such as bosses and grooves, and the intake pipe may be provided with corresponding mating parts, so that the intake assembly 14 and the intake pipe form a detachable connection. In addition, the bosses and grooves may be replaced with threaded parts, that is, a threaded connection is formed between the intake assembly 14 and the intake pipe.

[0144] like Figure 11 The diagram shows the inner side of the pad 12 that contacts the patient's face. Specifically, the pad 12 includes a first contact portion 121 for contact with the patient's nose, a second contact portion 122 for contact with the patient's face, and a third contact portion 123 for contact with the patient's jaw. There are two second contact portions 122, which are respectively located on both sides of the first contact portion 121 and are symmetrically arranged about the first contact portion 121. The first contact portion 121, one of the second contact portions 122, the third contact portion 123, and the other second contact portion 122 are sequentially connected in the circumferential direction. The internal space enclosed by the first contact portion 121, one of the second contact portions 122, the third contact portion 123, and the other second contact portion 122 constitutes the chamber 124.

[0145] Since the first contact portion 121, the second contact portion 122, and the third contact portion 123 come into contact with different parts of the patient's face, different contact portions can be made of different thicknesses to provide different contact forces / support forces. For example, the thickness of the first contact portion 121 can be set to be smaller to avoid applying excessive contact force to the patient's nose.

[0146] All components and parts not explicitly described in this invention may adopt the structures and implementations in the prior art, and will not be elaborated upon further in this invention.

[0147] Although the invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A quick release structure of a respiratory mask, characterized by, The application relates to a respiratory mask, comprising: a sliding support device for connecting with a mask body of the respiratory mask, the sliding support device having a fixed position and a disengaged position; and a connecting device for connecting with a headband of the respiratory mask, the connecting device being configured to be fixedly connected with the mask body when matched with the sliding support device at the fixed position, and to slide on the sliding support device in a direction towards the disengaged position under the action of an external force to move away from the sliding support device from the disengaged position beyond the fixed position. The sliding support device comprises a sliding rail, and the connecting device comprises a connecting head, the length l1 of the sliding rail being greater than the length l2 of the connecting head, the connecting head being engaged with the sliding rail at the fixed position, and the connecting head being capable of sliding on the sliding rail under the action of an external force to move away from the sliding rail from the disengaged position beyond the fixed position. The sliding rail is configured as an arc-shaped sliding rail curved towards a direction away from the mask body, the fixed position being located at a position of maximum curvature on an inner profile line of the arc-shaped sliding rail, and the disengaged position being closer to the mask body relative to the fixed position. Both ends of the arc-shaped sliding rail are connected with side portions of the mask body, and the disengaged position is located at a position of maximum width of the arc-shaped sliding rail.

2. The quick release structure of a respiratory mask according to claim 1, wherein, A first end of the arc-shaped sliding rail is connected with a side portion of the mask body, and a second end of the arc-shaped sliding rail has a predetermined distance from the side portion of the mask body, and the disengaged position is the second end of the arc-shaped sliding rail.

3. The quick release structure of a respiratory mask according to claim 2, wherein, The arc-shaped sliding rail extends vertically, horizontally or obliquely on the mask body.

4. The quick release structure of a respiratory mask according to claim 3, wherein, A radial cross section of the arc-shaped sliding rail is circular, elliptical or "H" shaped.

5. The quick release structure of a respiratory mask according to claim 3, wherein, The clamping groove has a semicircular cross section with a central angle greater than 3pi / 2.

6. The quick release structure of a respiratory mask according to any one of claims 3-5, wherein, The sliding support device further comprises a first support body and a second support body, the first support body and the second support body being respectively connected with side portions of the mask body, the sliding rail being connected between the first support body and the second support body, the fixed position being located at a middle position on the sliding rail, and the disengaged position being located at a connecting position between the sliding rail and the first support body or a connecting position between the sliding rail and the second support body.

7. The quick release structure of a respiratory mask according to claim 3, wherein, A fillet transition connection is adopted between an inner surface of the sliding rail and the first support body and between an inner surface of the sliding rail and the second support body.

8. The quick release structure of a respiratory mask according to claim 3, wherein, One side of the connector is provided with a clamping groove, the width d1 of the clamping groove is less than the maximum width d of the arc-shaped slide rail max , and the width d1 of the clamping groove is greater than the width d of the arc-shaped slide rail at other positions except the disengagement position avg .

9. The quick release structure of a respiratory mask according to claim 8, wherein, The width d1 of the card slot is greater than the width d of other positions on the arc-shaped slide rail except the disengagement position avg 0.05mm - 1.00mm.

10. The quick release structure of a respiratory mask according to claim 8, wherein, The card slot has a card slot opening, and a width d2 of the card slot opening is less than a width d of other positions on the arc-shaped slide rail except the disengagement position avg .

11. The quick release structure of a respiratory mask according to claim 8, wherein, The sliding support device comprises a sliding groove, and the connecting device comprises a connecting head, one side of the connecting head being provided with a fitting protrusion capable of sliding in the sliding groove.

12. The quick release structure of a respiratory mask according to claim 2, wherein, A fixed groove capable of matching with the fitting protrusion is arranged on the sliding groove, and the fixed position is a position of the fixed groove.

13. The quick release structure of a respiratory mask according to claim 12, wherein, One end or both ends of the sliding groove are connected with side portions of the mask body.

14. The quick release structure of a respiratory mask according to claim 1, wherein, When one end of the sliding groove is connected with a side portion of the mask body, the other end of the sliding groove is a free end, and the disengaged position is located at a position of the free end of the sliding groove. ​ 15. The quick release structure of a respiratory mask according to claim 14, wherein, ​ ​ One end of the chute is connected to the side of the mask body, and the disengagement position is located at the position of the maximum width of the chute.

16. A respiratory mask comprising a mask body, a headgear, and a quick release structure of a respiratory mask according to any one of claims 1-15, the mask body comprising a cushion for sealingly abutting a patient's face, a frame connected to the cushion, and an air inlet assembly connected to the frame, a chamber being provided on a side of the cushion distal to the frame, the chamber being in communication with the air inlet assembly, an end of the air inlet assembly distal to the frame being fixedly or detachably connected to an end of an air inlet conduit, the other end of the air inlet conduit being connected to a gas generator; characterized in that, The sliding support device is arranged on one side or both sides of the frame, and the connecting device is arranged at the end of the headband.

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