Mask frame system and mask
By designing a split sheath and limiting structure, the problem of easy tearing and slippage of flexible arm sheaths during frequent use is solved, achieving durability and wearing stability of the sheath.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BMC (TIANJIN) MEDICAL CO LTD
- Filing Date
- 2024-12-23
- Publication Date
- 2026-05-05
AI Technical Summary
The flexible arm sleeves of existing breathing masks are prone to tearing or irreversible elastic stress fatigue during frequent use, affecting their service life, and are also prone to slipping and wrinkling during wear.
The first and second sheaths adopt a split structure, and their relative movement is restricted by a detachable connection and limiting structure. Combined with the inclined or vertical connection branches and guide rail design, a stable connection between the sheaths and the extension arm is ensured.
It increases the lifespan of the cover, prevents wrinkles, and enhances wearing stability and comfort.
Smart Images
Figure CN224193889U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ventilation therapy technology, and in particular to a mask frame system and a mask. Background Technology
[0002] To secure a breathing mask to a patient's face and provide ventilation, flexible arms extending upwards along the patient's face are typically installed on both sides of the mask. To improve comfort, the flexible arms are covered with fabric sheaths that match their shape. These fabric sheaths are hollow tubular in shape and require deformation to pass over the limiting structure between them when being put on or removed from the flexible arms. Because the fabric sheath is in constant contact with the patient's face, it needs to be frequently put on and removed from the flexible arms. This repeated deformation during removal and re-attachment can cause the seams to tear or develop irreversible elastic stress fatigue, thus affecting its lifespan. Utility Model Content
[0003] This utility model provides a mask frame system and a mask to solve at least one of the above-mentioned technical problems.
[0004] According to a first aspect of the present invention, the present invention provides a mask frame system, including a frame middle portion, bone beam arms extending from both sides of the frame middle portion, and sheaths respectively sleeved on the bone beam arms, wherein the bone beam arms include connecting arms and extending arms, and the connecting arms are used to connect to the side of the frame middle portion.
[0005] The sheath includes a first sheath and a second sheath configured as separate units. The first sheath and the second sheath are detachably connected to the extension arm. When the first sheath and the second sheath cover the extension arm from both sides, they can restrict the relative movement between the extension arm and the first sheath and the second sheath.
[0006] In one embodiment, the extension arm is provided with at least two first limiting structures, and the first sheath and the second sheath are respectively provided with at least one second limiting structure. When the first sheath and the second sheath cover the extension arm from both sides, the first limiting structure and the corresponding second limiting structure cooperate to restrict the relative movement between the extension arm and the first sheath and the second sheath.
[0007] In one embodiment, the first limiting structure includes a connecting branch disposed on the extension arm, and the second limiting structure includes connecting rails disposed in the first sheath and the second sheath respectively, the connecting rails being disposed correspondingly to the connecting branch to accommodate the corresponding connecting branch.
[0008] In one embodiment, the connecting branches extend obliquely from the end faces on both sides of the extension arm relative to the extension direction of the extension arm, and the connecting guides extend obliquely in the first and second sheaths relative to the extension direction of the extension arm to accommodate the connecting branches, or
[0009] The connecting branch extends from the end faces on both sides of the extension arm along the width direction of the extension arm, and the connecting guide extends in the first sheath and the second sheath along the width direction of the extension arm to accommodate the connecting branch.
[0010] In one embodiment, the first limiting structure includes one of a protrusion or a groove that can cooperate with each other, the protrusion or the groove being located on the extension arm and / or at least one of the connecting branches;
[0011] The second limiting structure includes another of a protrusion or a groove that can cooperate with each other, the other of the protrusion or the groove being located in the first sheath, the second sheath, and / or at least one connecting rail.
[0012] In one embodiment, when the first limiting structure includes a protrusion and the second limiting structure includes a groove, the protrusion includes a boss structure protruding outward from the outer side wall of the connecting branch, and the groove includes an opening structure communicating with the connecting guide rail and penetrating the outer side walls of the first sheath and the second sheath.
[0013] When the first limiting structure includes a groove and the second limiting structure includes a protrusion, the groove includes an opening structure recessed inward along the outer side wall of the connecting branch, and the protrusion includes a boss structure protruding from the inner wall of the connecting guide rail, the boss structure being able to be inserted into the opening structure.
[0014] In one embodiment, when the first limiting structure includes a protrusion and the second limiting structure includes a groove, the protrusion includes a protrusion structure extending from the side end face of the connecting branch along the extending direction of the extending arm, and the groove includes a groove structure communicating with the connecting guide rail and extending along the extending direction of the extending arm.
[0015] When the first limiting structure includes a groove and the second limiting structure includes a protrusion, the groove includes a groove structure extending from the side end face of the connecting branch along the extending direction of the extending arm, and the protrusion includes a protrusion structure protruding from the inner side wall of the connecting guide rail, the protrusion structure being able to be embedded in the groove structure.
[0016] In one embodiment, when the first limiting structure includes a protrusion and the second limiting structure includes a groove, the protrusion includes a first stop protruding from the outer side wall of the extension arm, and the groove includes a stop groove located on the inner walls of the first sheath and the second sheath.
[0017] When the first limiting structure includes a groove and the second limiting structure includes a protrusion, the groove includes a stop groove recessed from the outer side wall of the extension arm, and the protrusion includes a first stop portion protruding from the inner walls of the first sheath and the second sheath respectively, and the first stop portion can abut against the stop groove.
[0018] In one embodiment, the first sheath and the second sheath are respectively provided with a first receiving cavity and a second receiving cavity, the first receiving cavity and the second receiving cavity respectively accommodating a portion of the extension arm in the width direction, the second limiting structure is respectively disposed in the first receiving cavity and the second receiving cavity, and the second limiting structure in the first receiving cavity and the second limiting structure in the second receiving cavity are offset from each other in the width direction of the extension arm.
[0019] In one embodiment, the first limiting structure is respectively disposed on the first end face and the second end face of the extension arm. The first end face and the second end face are disposed opposite to each other in the width direction of the extension arm. The first end face is accommodated in the first sheath, and the second end face is accommodated in the second sheath. The first limiting structure on the first end face and the second limiting structure on the second end face are offset from each other in the width direction of the extension arm.
[0020] In one embodiment, the inner sidewalls of the first sheath and the second sheath are each provided with at least one ventilation groove, the ventilation grooves penetrating the first sheath and the second sheath along their width directions; and / or
[0021] The portion of the extension arm not covered by the first and second sheaths is provided with a headband mounting hole that penetrates the extension arm.
[0022] In one embodiment, both the first sheath and the second sheath are made of moldable material or fabric material, and the inner surfaces of both the first sheath and the second sheath are skin-friendly surfaces.
[0023] According to a second aspect of the present invention, the present invention also provides a face mask including the face mask frame system described above. The face mask further includes a pad and a headband. The pad is located inside the middle portion of the frame and is sealed to the middle portion of the frame. The headband is connected to the bone beam arm.
[0024] Compared with the prior art, the advantages of this utility model are that, since the sheath is constructed as a split first sheath and second sheath, and the first sheath and second sheath are detachably connected to the extension arm respectively, when the first sheath and second sheath are removed from the extension arm, they will not be torn and deformed or cause irreversible elastic stress fatigue, thereby improving the service life of the sheath; and when the first sheath and second sheath cover the extension arm, they can restrict the movement between the first sheath and the extension arm, making it difficult for the first sheath and second sheath to move relative to the extension arm, thus avoiding wrinkles on the first sheath and second sheath that affect their service life. Attached Figure Description
[0025] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.
[0026] Figure 1 This is a three-dimensional structural diagram of the mask frame system in Embodiment 1 of the present invention;
[0027] Figure 2 This is an exploded view of the mask frame system in Embodiment 1 of the present invention;
[0028] Figure 3 yes Figure 2 A three-dimensional structural diagram of the extended arm shown;
[0029] Figure 4 yes Figure 2 The diagram shows a three-dimensional structure of the first sheath, with its internal structure indicated by dashed lines.
[0030] Figure 5 yes Figure 2 The diagram shows a three-dimensional structure of the second sheath, with its internal structure indicated by dashed lines.
[0031] Figure 6 yes Figure 1 Sectional view at AA;
[0032] Figure 7 This is a three-dimensional structural diagram of the mask frame system in Embodiment 2 of the present invention;
[0033] Figure 8 This is an exploded view of the mask frame system in Embodiment 2 of the present invention;
[0034] Figure 9 yes Figure 8 A three-dimensional structural diagram of the extended arm is shown, with its internal structure indicated by dashed lines;
[0035] Figure 10 yes Figure 8 The diagram shows a three-dimensional structure of the first sheath, with its internal structure indicated by dashed lines.
[0036] Figure 11 yes Figure 7 Sectional view at BB.
[0037] Figure label:
[0038] 1. Middle section of the frame; 2. Connectors; 3. Rib beam arm; 4. Sheath;
[0039] 11. Air intake section; 12. Exhaust port;
[0040] 31. Connecting arm; 32. Extension arm; 33. First limiting structure;
[0041] 311. Second stop section;
[0042] 321. Headband mounting holes;
[0043] 331. Connecting branch; 332. Protrusion; 333. First end face; 334. Second end face;
[0044] 3321. Boss structure; 3322. First stop part; 3323. Protrusion structure;
[0045] 41. First sheath; 42. Second sheath;
[0046] 43. Second limiting structure; 431. Connecting guide rail;
[0047] 432. Groove portion; 433. First receiving cavity; 434. Second receiving cavity;
[0048] 4321. Open structure; 4322. Stop groove; 4323. Groove structure;
[0049] 44. Ventilation groove. Detailed Implementation
[0050] The present invention will be further described below with reference to the accompanying drawings.
[0051] like Figures 1-11As shown, this utility model provides a mask frame system. The inner side of the mask frame system is in fluid communication with a pad (not shown) for contact with the patient's face, and the outer side of the mask frame system is in fluid communication with a ventilation gas pipeline for connecting a ventilation gas source, so that ventilation gas can be delivered to the patient through the pad for the patient to breathe.
[0052] Example 1
[0053] like Figures 1-6 As shown, the mask frame system of this utility model includes a central frame portion 1, bony arms 3 extending from both sides of the central frame portion 1, and sheaths 4 respectively fitted onto the bony arms 3. The bony arms 3 extend from the left and right sides of the central frame portion 1 along the direction from the patient's cheeks towards the patient's temples. That is, there is one bony arm 3 on each of the left and right sides of the central frame portion 1, and correspondingly, there are two sheaths 4, respectively fitted onto the bony arms 3 on the left and right sides of the central frame portion 1.
[0054] like Figure 2 As shown, the skeletal arm 3 includes a connecting arm 31 and an extension arm 32. The connecting arm 31 is used to connect to the side of the middle portion 1 of the frame. A sheath 4 covers a portion of the extension arm 32. The sheath 4 includes a first sheath 41 and a second sheath 42 configured as separate units. The first sheath 41 and the second sheath 42 each cover a portion of the extension arm 32 and are detachably connected to the extension arm 32. For example, the first sheath 41 and the second sheath 42 cover a portion of the extension arm 32 from both sides in the width direction of the extension arm 32. It can be understood that the first sheath 41 and the second sheath 42 may also cover a portion of the extension arm 32 from both sides in the length direction (i.e., the extension direction of the extension arm 32).
[0055] Since the sheath 4 is constructed in a split structure, and the first sheath 41 and the second sheath 42 are detachably connected to the extension arm 32 respectively.
[0056] In an optional embodiment, the first sheath 41 and the second sheath 42 are detachably connected to the extension arm 32, for example, both the first sheath 41 and the second sheath 42 can be engaged with the extension arm 32. Therefore, it is easier to remove the first sheath 41 and the second sheath 42 from the extension arm 32, which facilitates the cleaning of the sheath 4. Furthermore, when removing the first sheath 41 and the second sheath 42 from the extension arm 32, the first sheath 41 and the second sheath 42 will not be torn, causing them to deform or generate irreversible elastic stress fatigue, thereby improving the service life of the sheath 4.
[0057] In an optional embodiment, the first sheath 41 and the second sheath 42 are detachably connected to the extension arm 32, respectively. This connection can be achieved by interlocking the first sheath 41 and the second sheath 42 to form a complete sheath covering the extension arm 32. For example, the interlocking connection between the first sheath 41 and the second sheath 42 can be achieved by providing an interlocking protrusion on one and an interlocking groove on the other. When the first sheath 41 and the second sheath 42 cover the extension arm 32 from both sides, the interlocking protrusion and the interlocking groove on both sheaths engage to fix them together.
[0058] Furthermore, in order to make the connection between the first sheath 41 and the second sheath 42 more secure, the mating size of the engaging protrusion can be slightly larger than the mating size of the engaging groove. Thus, when the engaging protrusion is inserted into the engaging groove, it needs to be slightly deformed before it can be inserted into the engaging groove. This makes it less likely for the engaging protrusion to fall out of the engaging groove, thereby making the connection between the first sheath 41 and the second sheath 42 more secure.
[0059] Based on the two embodiments described above, the extension arm 32 is provided with at least two first limiting structures 33, and the first sheath 41 and the second sheath 42 are respectively provided with second limiting structures 43. When the first sheath 41 and the second sheath 42 cover the extension arm 32 from both sides, the first limiting structures 33 and the corresponding second limiting structures 43 cooperate to restrict the relative movement between the extension arm 32 and the first and second sheaths 41 and 42. Therefore, when the mask frame system is worn on the patient's face, the sheath 4 will not slide relative to the extension arm 32 when the patient adjusts their sleeping position, thus avoiding the problem of the sheath 4 sliding to areas outside the extension arm 32 and causing wrinkles that affect its use.
[0060] Furthermore, since the first sheath 41 and the second sheath 42 are not connected to or removed from the extension arm 32 by deformation, the cooperation between the second limiting structure 43 on the first sheath 41 and the second sheath 42 and the corresponding first limiting structure 33 is always effective, thereby avoiding the situation where the first sheath 41 and the second sheath 42 break through the limitation of the first limiting structure 33 and move relative to the extension arm 32.
[0061] like Figures 3-6 As shown, in this embodiment 1, the first limiting structure 33 includes a connecting branch 331 disposed on the extension arm 32, and the second limiting structure 43 includes a connecting guide rail 431 disposed in the first sheath 41 and the second sheath 42. When the first sheath 41 and the second sheath 42 respectively cover a portion of the extension arm 32 from both sides in the width direction, the first limiting structure 33 is inserted into the connecting guide rail 431, thereby restricting relative movement with the extension arm 32.
[0062] Please combine Figure 2 and Figure 3 The connecting branches 331 extend obliquely from the end faces of both sides of the extending arm 32 relative to the extending direction of the extending arm 32. For example... Figure 3 As shown, the two opposite end faces of the extension arm 32 in the width direction are the first end face 333 and the second end face 334, respectively. Connecting branches 331 extend upwards from the first end face 333 and downwards from the second end face 334, respectively. The connecting branches 331 on the first end face 333 and the second end face 334 are used to limit the movement of the first sheath 41 and the second sheath 42, respectively. The first sheath 41, for example, nests with the extension arm 32 downwards from its upper side, so the connecting guide rail 431 in the first sheath 41 can cooperate with the connecting branch 331 on the first end face 333; the second sheath 42, for example, nests with the extension arm 32 upwards from its lower side, so the connecting guide rail 431 in the second sheath 42 can cooperate with the connecting branch 331 on the second end face 334 (please refer to...). Figure 2 ).
[0063] Understandably, in order to cooperate with the connecting branch 331, the connecting guide rail 431 also extends obliquely relative to the extension direction of the extending arm 32 in the first sleeve 41 and the second sleeve 42, so as to accommodate the corresponding connecting branch 331 respectively.
[0064] By setting the connecting branch 331 and the connecting rail 431 to an inclined structure relative to the extension arm 32, the connecting branch 331 can more easily enter the corresponding connecting rail 431. In addition, to facilitate easier insertion of the connecting branch 331 into the connecting rail 431, the end of the connecting branch 331 away from the extension arm 32 can be set as an arc-shaped tip, thereby facilitating insertion into the connecting rail 431.
[0065] In the scheme where the connecting branch 331 is inclined, since the connecting guide rail 431 is also inclined accordingly, the connecting branch 331 can be made narrower or thinner to facilitate insertion into the connecting guide rail 431.
[0066] The connecting branch 331 on the first end face 333 and the connecting branch 331 on the second end face 334 can each be one or more. For example... Figure 3 As shown, when there are multiple connecting branches 331, the multiple connecting branches 331 on the first end face 333 are arranged at equal (or unequal) intervals along the extension direction of the extension arm 32, and the multiple connecting branches 331 on the second end face 334 are arranged at equal (or unequal) intervals along the extension direction of the extension arm 32. The number of connecting branches 331 on the first end face 333 can be the same as the number of connecting branches 331 on the second end face 334, such as... Figure 2 As shown, an example is illustrated where three connecting branches 331 are provided on each of the two end faces of the extension arm 32. It is understood that the number of connecting branches 331 on the first end face 333 may differ from the number of connecting branches 331 on the second end face 334. For example, the number of connecting branches 331 on the first end face 333 may be more or less, depending on the actual situation.
[0067] Each connecting branch 331 on the first end face 333 and each connecting branch 331 on the second end face 334 are staggered in the width direction of the extension arm 32. Thus, when the first sheath 41 and the second sheath 42 cover the extension arm 32, the connecting guide rails 431 in them are also staggered in the width direction of the extension arm 32. With this arrangement, on the one hand, the first sheath 41 and the second sheath 42 can cooperate with the extension arm 32 when they are correctly positioned, avoiding the mixing of the first sheath 41 and the second sheath 42; on the other hand, when the first sheath 41 and the second sheath 42 are respectively put on or removed from the extension arm 32, the force points between the connecting branch 331 and the connecting guide rail 431 are staggered, which makes it easier to assemble and disassemble the first sheath 41 and the second sheath 42.
[0068] For further information, please continue to refer to [link / reference]. Figure 3 and Figure 4 The first limiting structure 33 includes one of a protrusion 332 or a groove 432 that can cooperate with each other, one of the protrusion 332 or the groove 432 being located on the extension arm 32 and / or at least one connecting branch 331; the second limiting structure 43 includes the other of a protrusion 332 or a groove 432 that can cooperate with each other, the other of the protrusion 332 or the groove 432 being located in the sheath 4 and / or at least one connecting guide rail 431.
[0069] For example, when the first limiting structure 33 includes a protrusion 332 and the second limiting structure 43 includes a groove 432, such as Figure 3 As shown, the protrusion 332 may include a boss structure 3321 protruding outward from the outer side wall of the connecting branch 331, such as... Figure 4 and Figure 5 As shown, the groove portion 432 may include an opening structure 4321 that communicates with the connecting guide rail 431 and penetrates the outer side wall of the first sheath 41 and the second sheath 42.
[0070] like Figure 3As shown, the thickness of the connecting branch 331 is basically the same as the thickness of the extension arm 32. The boss structure 3321 is a structure that protrudes from the outer wall of the connecting branch 331. When the connecting branch 331 is inserted into the corresponding connecting guide rail 431 and slides along the connecting guide rail 431 to the opening structure 4321 communicating with the connecting guide rail 431, as... Figure 6 As shown, the boss structure 3321 can be inserted into the opening structure 4321, thereby fixing the first limiting structure 33 and the second limiting structure 43 relative to each other to ensure that the first sheath 41 and the second sheath 42 do not move relative to the extension arm 32. Furthermore, this structure requires slightly pressing the boss structure 3321 inwards to disengage it from the opening structure 4321 when removing the first sheath 41 and the second sheath 42 from the extension arm 32, allowing the connecting branch 331 to disengage from the corresponding connecting guide rail 431, thus enabling the first sheath 41 and the second sheath 42 to be removed from the extension arm 32. Therefore, it is understandable that when the protrusion structure 3321 is not pressed, the relative fixed state between the first limiting structure 33 and the second limiting structure 43 will not be released, that is, the position between the first sheath 41 and the second sheath 42 and the extension arm 32 will not change. Thus, when the patient wears the mask frame system, even if the sleeping position is greatly adjusted, the first sheath 41 and the second sheath 42 will not move on the extension arm 32, thus ensuring the service life of the first sheath 41 and the second sheath 42.
[0071] Furthermore, the protrusion 332 can be constructed not only on the connecting branch 331, but also on the extension arm 32. For example, the aforementioned boss structure 3321 can protrude outward from the outer side wall of the extension arm 32, and the opening structure 4321 on the first sheath 41 and the second sheath 42 can be adjusted accordingly.
[0072] Alternatively, the protrusion 332 can be constructed on both the connecting branch 331 and the extension arm 32. For example, the protrusion 332 may include a boss structure 3321 constructed on the connecting branch 331 and a first stop portion 3322 constructed on the extension arm 32. Figure 3 As shown, the first stop portion 3322 protrudes from the outer side wall of the extension arm 32 and extends along the width direction of the extension arm 32, forming a stepped structure between the first stop portion 3322 and the outer side wall of the extension arm 32. Correspondingly, the groove portion 432 includes an opening structure 4321 respectively constructed in the connecting guide rail 431 and a stop groove 4322 located on the inner wall of the first sheath 41 and the second sheath 42. The stop groove 4322 also extends along the width direction of the extension arm 32, so as to abut against the first stop portion 3322.
[0073] When the first sheath 41 and the second sheath 42 are respectively fitted onto the extension arm 32, the connecting branch 331 on the first end face 333 and the connecting branch 331 on the second end face 334 of the extension arm 32 are respectively inserted into the connecting guide rail 431 in the first sheath 41 and the connecting guide rail 431 in the second sheath 42, and slide in the corresponding connecting guide rail 431 until they reach the opening structure 4321. Each boss structure 3321 is inserted into the corresponding opening structure 4321, and at the same time, the first stop part 3322 is inserted into the stop groove 4322. The end face of the first stop part 3322 abuts against the inner wall of the stop groove 4322, thereby limiting the relative position of the first sheath 41 and the second sheath 42 with the extension arm 32 in the extension direction of the extension arm 32. Therefore, it can further ensure that the first sheath 41 and the second sheath 42 will not move relative to the extension arm 32 when the patient adjusts his sleeping position.
[0074] In other embodiments, the first limiting structure 33 includes a groove 432 and the second limiting structure 43 includes a protrusion 332. The groove 432 may include an opening structure 4321 recessed inward along the outer side wall of the connecting branch 331. The protrusion 332 is configured as a boss structure 3321 protruding from the inner wall of the connecting guide rail 431. The boss structure 3321 can be inserted into the opening structure 4321. This method can also ensure the relative fixed state between the first limiting structure 33 and the second limiting structure 43.
[0075] Understandably, the recessed portion 432 may also include a stop groove 4322 recessed from the outer side wall of the extension arm 32, and the protrusion 332 correspondingly includes a first stop portion 3322 protruding from the inner wall of the sheath 4. The first stop portion 3322 abuts against the stop groove 4322 to ensure the relative fixed state between the first limiting structure 33 and the second limiting structure 43.
[0076] Please continue to refer to this. Figure 4 and Figure 5The first sheath 41 and the second sheath 42 are respectively provided with a first receiving cavity 433 for accommodating the first end face 333 and a second receiving cavity 434 for accommodating the second end face 334. A second limiting structure 43 is respectively disposed in the first receiving cavity 433 and the second receiving cavity 434. The first receiving cavity 433 and the second receiving cavity 434 may have approximately the same contour as the extension arm 32. Therefore, when the two cover the extension arm 32 from the upper and lower sides respectively, the extension arm 32 can be smoothly inserted into the first receiving cavity 433 and the second receiving cavity 434. Furthermore, the first receiving cavity 433 is connected to the connecting guide rail 431 in the first sheath 41, and the second receiving cavity 434 is connected to the connecting guide rail 431 in the second sheath 42. Thus, the connecting branches 331 on the first end face 333 and the second end face 334 of the extension arm 32 enter the corresponding connecting guide rail 431 through the first receiving cavity 433 and the second receiving cavity 434 respectively.
[0077] like Figure 4 and Figure 5 As shown, the first receiving cavity 433 can penetrate the left and right end faces of the first sheath 41, and the second receiving cavity 434 can penetrate the left and right end faces of the second sheath 42 to facilitate the insertion of the extension arm 32.
[0078] In addition, such as Figure 3 As shown, a second stop 311 is also provided at the connection between the connecting arm 31 and the extension arm 32. The second stop 311 extends along the width direction of the extension arm 32, and its width is greater than the width of the extension arm 32. When the extension arm 32 is respectively inserted into the first receiving cavity 433 in the first sheath 41 and the second receiving cavity 434 in the second sheath 42, the second stop 311 can be inserted into the first receiving cavity 433 and the second receiving cavity 434 at the same time. Thus, one end of the first sheath 41 and the second sheath 42 can abut against the end of the connecting arm 31 near the extension arm 32, while the other end of the first sheath 41 and the second sheath 42 abuts against the end face of the first stop 3322 through the stop groove 4322. This ensures that the positions of the first sheath 41 and the second sheath 42 in the extension direction of the extension arm 32 are relatively fixed and will not slide on the extension arm 32.
[0079] The first sheath 41 and the second sheath 42 can each cover half of the width of the extension arm 32. After they are fitted onto the extension arm 32, their opposite end faces can abut against each other.
[0080] It is conceivable that a covering portion could be provided on the first sheath 41 and a notch portion could be provided on the second sheath 42, and vice versa. The covering portion and the notch portion cooperate with each other to prevent dust and the like from entering from the seam between the first sheath 41 and the second sheath 42 and adhering to the surface of the extension arm 32.
[0081] like Figure 4 and Figure 5 As shown, at least one ventilation groove 44 is provided on the inner wall of the first sheath 41, penetrating the first sheath 41 in the width direction. Similarly, at least one ventilation groove 44 is also provided on the inner wall of the second sheath 42, penetrating the second sheath 42 in the width direction. The ventilation grooves 44 can form a vertically penetrating airflow channel. When the patient wears the mask frame system, the ventilation grooves 44 can form a ventilation structure, thereby facilitating ventilation and perspiration, keeping the patient's face dry, and improving the comfort and patient compliance of its use.
[0082] like Figure 6 As shown, the ventilation grooves 44 on the first sheath 41 and the second sheath 42 are provided in a one-to-one correspondence, and when the end faces of the first sheath 41 and the second sheath 42 can abut against each other, the end faces of the ventilation grooves 44 on the first sheath 41 and the second sheath 42 are aligned with each other.
[0083] To create a multi-angle ventilation structure, the ventilation slots 44 on the first sheath 41 can be tilted relative to the extension direction of the extension arm 32, and the ventilation slots 44 on the second sheath 42 can be tilted in the opposite direction to the corresponding ventilation slots 44 on the first sheath 41. For example, the ventilation slots 44 on the first sheath 41 can be tilted to the right, and the ventilation slots 44 on the second sheath 42 can be tilted to the left. This can prolong the time that the airflow stays between the first and second sheaths 41 and the patient's face, thereby improving the ventilation and perspiration effect.
[0084] The first sheath 41 and the second sheath 42 can be made of elastic materials with good flexibility, such as foam materials, silicone, TPE, and other moldable materials. Since the inner surfaces of the first sheath 41 and the second sheath 42 need to contact the patient's facial skin, a skin-friendly surface treatment can be applied to the inner surfaces of the first sheath 41 and the second sheath 42, such as peeling the foam surface, surface modification, frosting or oil spraying the silicone surface, thereby creating a skin-friendly surface on the inner surfaces of the first sheath 41 and the second sheath 42.
[0085] Alternatively, the first sheath 41 and the second sheath 42 may also be made of fabric material, i.e., both are fabric sheaths.
[0086] Optionally, the first sheath 41 may be made of different materials, for example, the inner and outer materials may be different, and there may be an intermediate layer between the inner and outer sides or no intermediate layer; the second sheath 42 may adopt a similar structure.
[0087] In addition, such as Figure 2As shown, the portion of the extension arm 32 not covered by the sheath 4 has a headband mounting hole 321 that extends through the extension arm 32. The headband mounting hole 321 is used to connect a headband (not shown), which, through its fixing effect, secures the mask frame system to the patient's face.
[0088] To facilitate headband installation, the portion of the extension arm 32 not covered by the sheath 4 can be wider, meaning its width is greater than the width of the portion of the extension arm 32 covered by the sheath 4. This allows the headband mounting hole 321 to be configured as an elongated hole extending along its width, facilitating the insertion of the headband.
[0089] like Figure 2 As shown, the middle portion 1 of the frame also includes a connector 2 located on its inner side. The connector 2 is used for a sealing connection with a gasket (not shown). Therefore, the connector 2 can all have a shape structure that matches the opening area of the gasket. The connector 2 can be detachably connected to or fixedly connected to the gasket.
[0090] An air inlet 11 is provided on the outer side of the middle part 1 of the frame. It is in fluid communication with the ventilation pipeline on one hand and with the connector 2 and the pad on the other hand, so as to deliver ventilation gas to the pad that comes into contact with the patient's mouth and nose for the patient to breathe.
[0091] An exhaust port 12 is provided on the outer side of the middle part 1 of the frame. The exhaust port 12 is arranged around the air intake part 11 in a circumferential manner, and the gas exhaled by the patient can be discharged into the external environment through the exhaust port 12.
[0092] Example 2
[0093] like Figures 7-11 As shown, based on Embodiment 1 above, this utility model also provides a modified Embodiment 2. The following will mainly describe the differences between Embodiment 2 and Embodiment 1 above, while the similarities will not be repeated.
[0094] like Figure 8 As shown, in this embodiment 2, the first limiting structure 33 can also be one of the protrusion 332 or the groove 432, and the second limiting structure 43 is the other of the protrusion 332 or the groove 432.
[0095] Unlike Embodiment 1 described above, the connecting branch 331 extends from the end faces of both sides of the extension arm 32 along the width direction of the extension arm 32, as shown below. Figure 9 As shown. That is, in this embodiment 2, the connecting branch 331 is not inclined, but extends from the two end faces of the extension arm 32 in a direction approximately perpendicular to the end faces. Accordingly, as Figure 8 and Figure 10As shown, the connecting guide rail 431 extends along the width direction of the extending arm 32 in the first sheath 41 and the second sheath 42 respectively to accommodate the connecting branch 331.
[0096] In the scheme where the connecting branch 331 is approximately perpendicular to the end face of the extension arm 32, since the connecting guide rail 431 is also correspondingly perpendicular to the end face of the first sheath 41 or the second sheath 42, the resistance to its insertion into the connecting guide rail 431 is relatively small. Therefore, the connecting branch 331 can be set wider or larger than the connecting branch 331 in Embodiment 1.
[0097] In this embodiment 2, when the first limiting structure 33 includes a protrusion 332 and the second limiting structure 43 includes a groove 432, such as Figure 9 As shown, the protrusion 332 is constructed as a protrusion structure 3323 extending from the side end face of the connecting branch 331 along the extending direction of the extending arm 32. That is, the protrusion 332 can be a protrusion structure 3323 protruding from the left and right sides of the connecting branch 331 respectively, and the protrusion structure 3323 makes the connecting branch 331 present a T-shaped structure as a whole.
[0098] Correspondingly, such as Figure 10 As shown, the groove portion 432 is constructed as a groove structure 4323 that communicates with the connecting guide rail 431 and extends along the extending direction of the extending arm 32. Unlike Embodiment 1 described above, in this Embodiment 2, the groove portion 432 does not penetrate the first sheath 41 or the second sheath 42, but extends on the left and right sides of the connecting guide rail 431 to form a groove structure 4323 capable of accommodating the protrusion structure 3323. Therefore, it can be understood that the width of the groove structure 4323 is greater than the width of the connecting guide rail 431.
[0099] like Figure 10 As shown, each connecting guide rail 431 in the first sheath 41 is connected to the first receiving cavity 433, and each connecting guide rail 431 in the second sheath 42 is connected to the second receiving cavity 434. When the first sheath 41 and the second sheath 42 are respectively fitted on the extension arm 32, the connecting branch 331 can enter the corresponding connecting guide rail 431 through the first receiving cavity 433 and the second receiving cavity 434 respectively.
[0100] It should be noted that when each connecting branch 331 moves to the end of the corresponding connecting guide rail 431, because each connecting branch 331 is provided with a protrusion structure 3323, its width is greater than the width of the connecting guide rail 431. This causes each connecting guide rail 431 to slightly deform until each connecting branch 331 moves to the protrusion structure 3323 on it and enters the corresponding groove structure 4323 (e.g., Figure 11As shown), each connecting guide rail 431 is restored, and the protrusion structure 3323 is engaged with the groove structure 4323, thereby keeping the first limiting structure 33 and the second limiting structure 43 relatively fixed.
[0101] It is conceivable that the structural form of the connecting branch 331 in this embodiment 2 can be combined with the boss structure 3321 in the above embodiment 1. That is, the protrusion 332 can also be constructed as a boss structure 3321 protruding from the outer side wall of the connecting branch 331. Accordingly, the groove 432 can include an opening structure 4321 that communicates with the connecting guide rail 431 and penetrates the outer side wall of the first sheath 41 and the second sheath 42.
[0102] In another implementation of this embodiment 2, the first limiting structure 33 includes a groove portion 432 and the second limiting structure 43 includes a protrusion portion 332. The groove portion 432 may include a groove structure 4323 extending from the side end face (e.g., its left and right sides) of the connecting branch 331 along the extending direction of the extending arm 32. The protrusion portion 332 may include a protrusion structure 3323 protruding from the inner side wall of the connecting guide rail 431. The protrusion structure 3323 can be embedded in the groove structure 4323, thereby keeping the first limiting structure 33 and the second limiting structure 43 relatively fixed.
[0103] In this embodiment 2, the cooperation between the protrusion structure 3323 and the groove structure 4323 can limit the movement of the first sheath 41 and the second sheath 42 in the extending direction of the extending arm 32. That is, the cooperation between the protrusion structure 3323 and the groove structure 4323 can also serve as a limiting function. Therefore, Figure 8 As shown, the first stop portion 3322 and the stop groove 4322 in the above embodiment 1 can be omitted.
[0104] The parts not described in detail in this embodiment 2 can adopt the same structural form as in embodiment 1, and will not be described again.
[0105] This invention also provides a face mask, more specifically, a breathing mask, which can be a full-face mask, a nasal mask, or an oronasal mask. The face mask of this invention includes the mask frame system described in the above embodiments. The mask also includes a pad and a headband (not shown). The pad is located inside the middle portion 1 of the frame and is sealed to the connector 2 inside the middle portion 1 of the frame. The headband is connected to the headband mounting holes 321 on the bone beam arm 3, thereby fixing the mask to the patient's face.
[0106] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto 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, provided there is no structural conflict. The present 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 face mask frame system, characterized in that, It includes a middle part of a frame, bone beam arms extending from both sides of the middle part of the frame, and sheaths respectively fitted on the bone beam arms. The bone beam arms include connecting arms and extension arms, and the connecting arms are used to connect to the side of the middle part of the frame. The sheath includes a first sheath and a second sheath configured as separate units. The first sheath and the second sheath are detachably connected to the extension arm. When the first sheath and the second sheath cover the extension arm from both sides, they can restrict the relative movement between the extension arm and the first sheath and the second sheath.
2. The face mask frame system according to claim 1, characterized in that, The extension arm is provided with at least two first limiting structures, and the first sheath and the second sheath are respectively provided with at least one second limiting structure. When the first sheath and the second sheath cover the extension arm from both sides, the first limiting structure and the corresponding second limiting structure cooperate to restrict the relative movement between the extension arm and the first sheath and the second sheath.
3. The mask frame system according to claim 2, characterized in that, The first limiting structure includes a connecting branch disposed on the extension arm, and the second limiting structure includes connecting guide rails disposed in the first sheath and the second sheath respectively, the connecting guide rails being disposed correspondingly to the connecting branch to accommodate the corresponding connecting branch.
4. The mask frame system according to claim 3, characterized in that, The connecting branches extend obliquely from the end faces on both sides of the extension arm relative to the extension direction of the extension arm, and the connecting guides extend obliquely within the first and second sheaths relative to the extension direction of the extension arm to accommodate the connecting branches, or The connecting branch extends from the end faces on both sides of the extension arm along the width direction of the extension arm, and the connecting guide extends in the first sheath and the second sheath along the width direction of the extension arm to accommodate the connecting branch.
5. The mask frame system according to claim 3 or 4, characterized in that, The first limiting structure includes one of a protrusion or a groove that can cooperate with each other, the protrusion or the groove being located on the extension arm and / or at least one of the connecting branches; The second limiting structure includes another of a protrusion or a groove that can cooperate with each other, the other of the protrusion or the groove being located in the first sheath, the second sheath, and / or at least one connecting rail.
6. The mask frame system according to claim 5, characterized in that, When the first limiting structure includes a protrusion and the second limiting structure includes a groove, the protrusion includes a boss structure that protrudes outward from the outer side wall of the connecting branch, and the groove includes an opening structure that communicates with the connecting guide rail and penetrates the outer side walls of the first sheath and the second sheath. When the first limiting structure includes a groove and the second limiting structure includes a protrusion, the groove includes an opening structure recessed inward along the outer side wall of the connecting branch, and the protrusion includes a boss structure protruding from the inner wall of the connecting guide rail, the boss structure being able to be inserted into the opening structure.
7. The mask frame system according to claim 5, characterized in that, When the first limiting structure includes a protrusion and the second limiting structure includes a groove, the protrusion includes a protrusion structure extending from the side end face of the connecting branch along the extending direction of the extending arm, and the groove includes a groove structure communicating with the connecting guide rail and extending along the extending direction of the extending arm. When the first limiting structure includes a groove and the second limiting structure includes a protrusion, the groove includes a groove structure extending from the side end face of the connecting branch along the extending direction of the extending arm, and the protrusion includes a protrusion structure protruding from the inner side wall of the connecting guide rail, the protrusion structure being able to be embedded in the groove structure.
8. The mask frame system according to claim 5, characterized in that, When the first limiting structure includes a protrusion and the second limiting structure includes a groove, the protrusion includes a first stop protruding from the outer side wall of the extension arm, and the groove includes a stop groove located on the inner wall of the first sheath and the second sheath. When the first limiting structure includes a groove and the second limiting structure includes a protrusion, the groove includes a stop groove recessed from the outer side wall of the extension arm, and the protrusion includes a first stop portion protruding from the inner walls of the first sheath and the second sheath respectively, and the first stop portion can abut against the stop groove.
9. The mask frame system according to any one of claims 2-4, characterized in that, The first sheath and the second sheath are respectively provided with a first receiving cavity and a second receiving cavity, the first receiving cavity and the second receiving cavity respectively accommodating a portion of the extension arm in the width direction, the second limiting structure is respectively disposed in the first receiving cavity and the second receiving cavity, and the second limiting structure in the first receiving cavity and the second receiving cavity are offset from each other in the width direction of the extension arm.
10. The mask frame system according to claim 9, characterized in that, The first limiting structure is respectively disposed on the first end face and the second end face of the extension arm. The first end face and the second end face are disposed opposite to each other in the width direction of the extension arm. The first end face is accommodated in the first sheath and the second end face is accommodated in the second sheath. The first limiting structure on the first end face and the second limiting structure on the second end face are offset from each other in the width direction of the extension arm.
11. The mask frame system according to any one of claims 1-4, characterized in that, The inner sidewalls of the first sheath and the second sheath are respectively provided with at least one ventilation groove, and the ventilation grooves penetrate the first sheath and the second sheath along the width direction of the first sheath and the second sheath respectively; and / or The portion of the extension arm not covered by the first and second sheaths is provided with a headband mounting hole that penetrates the extension arm.
12. The mask frame system according to any one of claims 1-4, characterized in that, Both the first sheath and the second sheath are made of moldable materials or fabric materials, and the inner surfaces of both the first sheath and the second sheath are skin-friendly surfaces.
13. A face mask, characterized in that, The mask frame system includes any one of claims 1-12, the mask further including a pad and a headband, the pad being located inside the middle portion of the frame and sealed to the middle portion of the frame, the headband being connected to the bone beam arms respectively.