Anti-pulling combined breathing mask

Abstract

A combination respirator mask with anti-detachment function comprises a hard mask frame, a flexible mask body and a clamping unit. The hard mask frame comprises a ring frame and a connecting rib which cooperatively define a frame space, and a first flange extending outwardly from a rear periphery of the ring frame. The flexible mask body defines a mask body space and comprises a central portion, a surrounding portion extending outwardly and rearwardly from the central portion, and a peripheral end portion expanding outwardly from the surrounding portion. The clamping unit comprises a plurality of clamping assemblies arranged separately between the first flange and the peripheral end portion. Each clamping assembly has a sleeve hole and a sleeve column which can be sleeved and clamped or detached in the front-rear direction. When the combination respirator mask is in an assembled state, the flexible mask body is located in the frame space and is limited, and the flexible mask body and the hard mask frame can be prevented from being detached by the clamping unit, so as to maintain good use efficiency.

Description

Technical Field

[0001] This invention relates to a breathing mask, and more particularly to a combination breathing mask that prevents detachment. Background Technology

[0002] See Figure 1 , Figure 2 U.S. Patent No. 8,069,855, owned by the applicant, discloses a breathing mask 1, which mainly includes a rigid mask frame 11 and a flexible mask body 12. The rigid mask frame 11 defines a frame space 110 and has a ring portion 111, a loop portion 112, two ribs 113 connecting the ring portion 111 and the loop portion 112, and a plurality of protrusions 114 disposed on the outer ring surface of the ring portion 111. The flexible mask body 12 defines an internal space 120 and has a flat central portion 121, a surrounding portion 122 extending outwardly from the central portion 121, a peripheral end portion 123 opening outwardly from the surrounding portion 112 for covering a user's face, and an annular flange 124 protruding from the central portion 121. The annular flange 124 defines a central hole 125 communicating with the internal space 120. The annular flange 124 is fitted onto the ring portion 111 and blocked by the protrusion 114, so that the rigid mask frame 11 is assembled with the flexible mask body 12, and the surrounding portion 122 is located within the frame space 110 and is restricted by the rib portion 113 and the ring portion 112.

[0003] The breathing mask 1 has a single-size rigid mask frame 11 that can accommodate flexible mask bodies 12 of different sizes. However, during use, there is still room for improvement in how to prevent the flexible mask body 12 from easily moving and rotating relative to the rigid mask frame 11 when the user's head turns, causing deformation of the central hole 125 and detachment of the flexible mask body 12 from the rigid mask frame 11, thus affecting the effectiveness of the breathing mask 1. Summary of the Invention

[0004] The purpose of this invention is to provide a non-detachable combination breathing mask that can prevent components from detaching in order to maintain good performance.

[0005] This invention relates to a modular respirator designed to prevent slack-off, defined by the front-back and left-right directions perpendicular to each other, based on the orientation of use. The modular respirator comprises a rigid mask frame, a flexible mask body, and a locking unit; its key feature is:

[0006] The rigid mask frame includes a ring frame, a first flange, and a connecting rib. The ring frame has a front periphery and a rear periphery located in opposite directions. The first flange extends outward from the rear periphery and has a front and a rear. The connecting rib has two first segments extending forward from the front periphery and a second segment connecting the first segments and extending along the left-right direction. The ring frame and the connecting rib cooperate to define the frame space.

[0007] The flexible mask body includes a central portion, an enclosing portion that bends outward and backward from the central portion, and a peripheral end portion that expands outward from the enclosing portion. The central portion, the enclosing portion, and the peripheral end portion cooperate to define a mask space. The central portion has a perforation that communicates with the mask space. The peripheral end portion has a second flange that expands outward from the enclosing portion and a skin-friendly ring that extends backward from the second flange.

[0008] The locking unit includes at least four locking assemblies separately disposed between the first flange and the second flange. Each locking assembly has a sleeve hole disposed on the first flange and a flexible sleeve post disposed on the second flange and extending forward. The sleeve hole is defined by an inner circumferential surface connecting the front and rear of the first flange. The sleeve post has a free section that can freely pass through the sleeve hole, a fixed section that can engage and lock or disengage with the sleeve hole, and a blocking section located between the free section and the fixed section.

[0009] The anti-detachment modular breathing mask can switch between an assembled state and a disassembled state. When the anti-detachment modular breathing mask is in the assembled state, the central part and the surrounding part of the flexible mask body are located within the frame space and are restricted by the connecting ribs and ring frame of the rigid mask frame. The peripheral end is located outside the frame space, and the back of the first flange abuts against the second flange. The fixing section of the sleeve post is respectively clamped and deformed by the inner circumferential surface of the sleeve hole, and the blocking section of the sleeve post blocks the sleeve hole to prevent the sleeve hole from detaching from the sleeve post. When the rigid mask frame and the flexible mask body are pulled away from each other in the front-back direction, the sleeve post is detached from the sleeve hole, so that the anti-detachment modular breathing mask is in the disassembled state.

[0010] The anti-detachment combined breathing mask of the present invention has the snap-fit ​​assembly separately disposed at the top left, bottom left, top right, and bottom right.

[0011] The anti-detachment combined breathing mask of the present invention has an elliptical hole in each snap-fit ​​assembly, with a long hole diameter and a short hole diameter, and the fixing section of the sleeve post of each snap-fit ​​assembly is a circular column with an outer diameter, wherein the outer diameter is larger than the short hole diameter.

[0012] The anti-detachment combined breathing mask of the present invention has a circular hole in each snap-fit ​​assembly and a diameter, and the fixing section of the sleeve post of each snap-fit ​​assembly is an elliptical column with a long outer diameter and a short outer diameter, wherein the long outer diameter is larger than the diameter.

[0013] The anti-detachment combined breathing mask of the present invention has a blocking section having a truncated conical portion with an increasing outer diameter from the free section toward the fixed section, and a truncated spherical portion formed from the truncated conical portion toward the fixed section, wherein the outer diameter of the truncated spherical portion is larger than the outer diameter of the fixed section.

[0014] The anti-detachment combined breathing mask of the present invention further includes a forehead support seat in the rigid mask frame. The forehead support seat has a support rod extending from the ring frame toward the top and an abutment block disposed at the free end of the support rod.

[0015] The anti-detachment combined breathing mask of the present invention further includes an air delivery unit, the air delivery unit including a connecting ring detachably assembled to the central part, and a tube connected to the connecting ring. The connecting ring has an inner ring surface defining a through hole, an outer ring surface surrounding the inner ring surface and forming an annular groove, and a front ring surface and a rear ring surface connecting the inner ring surface and the outer ring surface. The connecting ring is located in the through hole of the central part and is embedded and connected to the central part through the annular groove.

[0016] The anti-detachment combined breathing mask of the present invention has a connecting end and several elastic hooks extending from the connecting end toward the rear side. The elastic hooks can pass through the through hole of the connecting ring and be snapped onto the rear ring surface.

[0017] The anti-slip combination breathing mask of the present invention further includes a strap unit, wherein the strap unit includes several lugs disposed on the rigid mask frame and located on the left and right sides, and several straps respectively passing through and connecting the lugs.

[0018] The beneficial effect of the present invention is that the locking unit can prevent the flexible mask body from detaching from the rigid mask frame, so as to maintain good performance. Attached Figure Description

[0019] Figure 1 It is an exploded perspective view of U.S. Patent No. 8,069,855;

[0020] Figure 2 It is a composite sectional view of U.S. Patent No. 8,069,855;

[0021] Figure 3 This is an exploded perspective view of an embodiment of the anti-slip combination breathing mask of the present invention;

[0022] Figure 4 This is a three-dimensional composite diagram of the embodiment described;

[0023] Figure 5 It is a collection of Figure 4 A cross-sectional view of line VV in the middle;

[0024] Figure 6 It is a collection of Figure 5 A magnified view of a section shows the locking mechanism of a set of holes and a set of posts;

[0025] Figure 7 It is a collection of Figure 6 The cross-sectional view along line VII-VII shows that the sleeve hole is an elliptical hole and the fixing section of the sleeve post is a circular post;

[0026] Figure 8 It is similar Figure 7 The view shows that the sleeve hole is a circular hole and the fixing section of the sleeve post is an elliptical post. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Before the present invention is described in detail, attention should be paid to the relative position terms used in the following description, such as "front-back direction X", "left-right direction Y", and "top-bottom direction Z", which are based on the orientation shown in each figure and the normal use orientation. The front-back direction X is perpendicular to the left-right direction Y and the top-bottom direction Z, and similar elements are represented by the same number.

[0028] See Figures 3 to 7 The present invention provides a combination breathing mask that is designed to prevent slippage and is used to cover the face of a user (not shown). The embodiment includes a rigid mask frame 2, a flexible mask body 3, a locking unit 4, an air delivery unit 5, and a strap unit 6.

[0029] The rigid mask frame 2 is, for example, a single piece and includes a ring frame 21, a first flange 22, a connecting rib 23 and a forehead support 24. The ring frame 21 has a front periphery 211 and a rear periphery 212 located in opposite directions. The first flange 22 extends outward from the rear periphery 212 and has a front face 221 and a rear face 222. The connecting rib 23 has two first segments 231 extending forward from the left and right sides of the front periphery 211, and a second segment 232 extending along the left-right direction Y and connecting the first segments 231. The ring frame 21 and the connecting rib 23 cooperate to define a frame space 20.

[0030] The forehead support 24 has a support rod 241 extending from the ring frame 21 toward the top, and an abutment block 242 disposed at the free end of the support rod 241 for the user's forehead (not shown) to rest against.

[0031] The flexible face mask body 3 is made of elastic material and includes a central portion 31, a surrounding portion 32 extending outward and rearward from the central portion 31, and a peripheral end portion 33 expanding outward from the surrounding portion 32. The central portion 31, the surrounding portion 32, and the peripheral end portion 33 cooperate to define a mask space 30. The central portion 31 has a through-hole 311 that penetrates and communicates with the mask space 30 in the front-rear direction X. The peripheral end portion 33 has a second flange 331 expanding outward from the surrounding portion 32, and a skin-friendly ring 332 extending rearward from the second flange 331 for covering the user's face.

[0032] The locking unit 4 includes four locking assemblies 41 disposed between the first flange 22 and the second flange 331 of the peripheral end 33. The locking assemblies 41 are separately disposed at the top left, bottom left, top right, and bottom right. Each locking assembly 41 has a set of holes 42 and a set of posts 43 that can be engaged or disengaged from each other along the front-rear direction X. The set of holes 42 is disposed on the first flange 22 and defined by an inner peripheral surface 421 connecting the front end 221 and the rear end 222. The set of posts 43 is disposed on the second flange 331. It extends forward and has a free section 431 that can freely pass through the sleeve hole 42, a fixed section 432 that can be engaged or disengaged from the sleeve hole 42, and a blocking section 433 located between the free section 431 and the fixed section 432. The blocking section 433 has a truncated tapered portion 434 with an increasing outer diameter from the free section 431 toward the fixed section 432, and a truncated spherical portion 435 formed from the truncated tapered portion 434 toward the fixed section 432, and the outer diameter of the truncated spherical portion 435 is larger than the outer diameter of the fixed section 432.

[0033] The sleeve 43 is integrally formed with the flexible mask body 3 and also has flexibility.

[0034] The gas delivery unit 5 includes a connecting ring 51 detachably assembled to the central portion 31 and a tube body 52. ​​The connecting ring 51 has an inner annular surface 511 defining a through hole 510, an outer annular surface 513 surrounding the inner annular surface 511 and forming an annular groove 512, and a front annular surface 514 and a rear annular surface 515 connecting the inner annular surface 511 and the outer annular surface 513. The connecting ring 51 is located in the through hole 311 of the central portion 31 and is fitted and connected to the central portion 31 through the annular groove 512. The tube body 52 has a connecting end 521 and several elastic hooks 522 extending rearward from the connecting end 521. The elastic hooks 522 can pass through the through hole 510 of the connecting ring 51 and snap onto the rear annular surface 515, thereby allowing the tube body 52 to be easily assembled or detached from the connecting ring 51.

[0035] The strap unit 6 includes several lugs 61 located on the left and right sides of the ring frame 21 of the rigid mask frame 2, and several straps 62 that pass through and connect to the lugs 61 to surround and fix the user's head.

[0036] The anti-detachment modular breathing mask can switch between an assembled state and a detached state. When the anti-detachment modular breathing mask is in the assembled state, the central part 31 and the surrounding part 32 of the flexible mask body 3 are located within the frame space 20 of the rigid mask frame 2 and are restricted by the connecting rib 23 and the ring frame 21. The peripheral end 33 is located outside the frame space 20, and the rear end 222 of the first flange 22 abuts against the second flange 331. The fixing section 432 of the sleeve post 43 is respectively engaged and locked with the sleeve hole 42. Furthermore, the blocking section 433 of the sleeve post 43 blocks the sleeve hole 42 to prevent the sleeve hole 42 from detaching from the sleeve post 43, and prevents the rigid mask frame 2 and the flexible mask body 3 from rotating or moving relative to each other. When the rigid mask frame 2 and the flexible mask body 3 are pulled away from each other in the front-back direction X, and the pulling force is greater than the blocking force of the blocking section 433 on the sleeve hole 42, the sleeve post 43 can be detached from the sleeve hole 42 respectively, thereby putting the anti-detachment combined breathing mask 2 in the detached state.

[0037] In use, the four locking assemblies 41 of the locking unit 4 are located at the top left, bottom left, top right, and bottom right, and the structure of each locking assembly 41 restricts the movable travel of the flexible mask body 3 relative to the rigid mask frame 2 in the front-back direction X, the left-right direction Y, and the top-bottom direction Z. In addition, when the strap 62 is tightened, it presses the rigid mask frame 2 against the flexible mask body 3, causing the first flange 22 to press against the second flange 331. Thus, even if the user's head turns, the flexible mask body 3 and the rigid mask frame 2 cannot rotate or move relative to each other, effectively preventing the flexible mask body 3 from detaching from the rigid mask frame 2, thereby maintaining the usability of the anti-detachment combination breathing mask.

[0038] The following points are worth noting:

[0039] 1. During assembly, when the flexible mask body 3 and the rigid mask frame 2 move closer together along the front-rear direction X, the free section 431 of the sleeve post 43 can smoothly pass through the sleeve hole 42. When the blocking section 433 of the sleeve post 43 touches the sleeve hole 42, the operator (not shown) holds the free section 431 and applies a forward pulling force. Due to the flexibility of the sleeve post 43 and the guiding effect of the truncated conical portion 434 of the blocking section 433, the free section 431 and the blocking section 433 of the sleeve post 43 can smoothly and quickly pass through the sleeve hole 42, thereby allowing the fixed section 432 to be smoothly locked by the inner circumferential surface 421 of the sleeve hole 42 to complete the assembly operation. During disassembly, the truncated spherical portion 435 of the sleeve post 43 allows the blocking section 433 of the sleeve post 43 to smoothly disengage from the sleeve hole 42, thus completing the disassembly operation.

[0040] 2. The shapes of the sleeve hole 42 and the fixing section 433 of the sleeve post 43 can be changed, such as... Figure 7 As shown, the sleeve hole 42 is an elliptical hole with a long diameter and a short diameter d1. The fixing section 433 of the sleeve post 43 is a circular cylinder with an outer diameter D1, and the outer diameter D1 is larger than the short diameter d1. Because the fixing section 432 is softer than the inner circumferential surface 421 of the sleeve hole 42, when the sleeve hole 42 and the fixing section 432 are engaged, the fixing section 432 will be deformed by the inner circumferential surface 421, thereby increasing the engagement strength. Figure 8As shown, the sleeve hole 42' is a circular hole with a diameter d2, and the fixing section 432' of the sleeve post 43 is an elliptical cylinder with a long outer diameter D2 and a short outer diameter, and the long outer diameter D2 is larger than the diameter d2. Because the fixing section 432' is softer than the inner circumferential surface 421' of the sleeve hole 42', when the sleeve hole 42' and the fixing section 432' are engaged and locked, the fixing section 432' will be deformed by the inner circumferential surface 421', thereby increasing the engagement strength.

[0041] Third, the number of the locking assembly 41 can vary and is not limited to four, and the setting position of the locking assembly 41 can vary. For example, it can be set at the top, bottom, left, or right, and is not limited to the setting position of the embodiment. Its function is to prevent the rigid mask frame 2 and the flexible mask body 3 from rotating relative to each other.

[0042] In summary, the anti-slip combination breathing mask of the present invention has the following effects and advantages, and therefore can indeed achieve the purpose of the present invention.

[0043] 1. The present invention, through the locking unit 4, can prevent the flexible mask body 3 from detaching from the rigid mask frame 2, so as to maintain good performance.

[0044] Second, when the strap 62 is tightened during use, the rigid mask frame 2 will be pressed against the flexible mask body 3, causing the first flange 22 to press against the second flange 331. This ensures that the sleeve hole 42 and the sleeve post 43 will not separate, thereby preventing the flexible mask body 3 from separating from the rigid mask frame 2 and maintaining good performance.

Claims

1. A modular respirator designed to prevent slack-off, defined with the usage orientation as a reference and perpendicular to each other in the front-back and left-right directions, the modular respirator comprising a rigid mask frame, a flexible mask body, and a locking unit; characterized in that: The rigid mask frame includes a ring frame, a first flange, and a connecting rib. The ring frame has a front periphery and a rear periphery located in opposite directions. The first flange extends outward from the rear periphery and has a front and a rear. The connecting rib has two first segments extending forward from the front periphery and a second segment connecting the first segments and extending along the left-right direction. The ring frame and the connecting rib cooperate to define the frame space. The flexible mask body includes a central portion, an enclosing portion that bends outward and backward from the central portion, and a peripheral end portion that expands outward from the enclosing portion. The central portion, the enclosing portion, and the peripheral end portion cooperate to define a mask space. The central portion has a perforation that communicates with the mask space. The peripheral end portion has a second flange that expands outward from the enclosing portion and a skin-friendly ring that extends backward from the second flange. The locking unit includes at least four locking assemblies separately disposed between the first flange and the second flange. Each locking assembly has a sleeve hole disposed on the first flange and a flexible sleeve post disposed on the second flange and extending forward. The sleeve hole is defined by an inner circumferential surface connecting the front and rear of the first flange. The sleeve post has a free section that can freely pass through the sleeve hole, a fixed section that can engage and lock or disengage with the sleeve hole, and a blocking section located between the free section and the fixed section. The anti-detachment modular breathing mask can switch between an assembled state and a disassembled state. When the anti-detachment modular breathing mask is in the assembled state, the central part and the surrounding part of the flexible mask body are located within the frame space and are restricted by the connecting ribs and ring frame of the rigid mask frame. The peripheral end is located outside the frame space, and the back of the first flange abuts against the second flange. The fixing section of the sleeve post is respectively clamped and deformed by the inner circumferential surface of the sleeve hole, and the blocking section of the sleeve post blocks the sleeve hole to prevent the sleeve hole from detaching from the sleeve post. When the rigid mask frame and the flexible mask body are pulled away from each other in the front-back direction, the sleeve post is detached from the sleeve hole, so that the anti-detachment modular breathing mask is in the disassembled state.

2. The anti-detachment combined breathing mask according to claim 1, characterized in that: The snap-fit ​​assembly is separately located at the top left, bottom left, top right, and bottom right.

3. The anti-detachment combined breathing mask according to claim 1, characterized in that: Each snap-fit ​​assembly has an elliptical hole with a long diameter and a short diameter. The fixing section of the snap-fit ​​assembly's post is a circular post with an outer diameter that is larger than the short diameter.

4. The anti-detachment combined breathing mask according to claim 1, characterized in that: Each snap-fit ​​assembly has a circular hole with a diameter, and the fixing section of each snap-fit ​​assembly's sleeve post is an elliptical post with a long outer diameter and a short outer diameter, wherein the long outer diameter is larger than the hole diameter.

5. The anti-detachment combined breathing mask according to claim 1, characterized in that: The blocking section has a truncated tapered portion with an increasing outer diameter from the free section toward the fixed section and a truncated spherical portion formed from the truncated tapered portion toward the fixed section, wherein the outer diameter of the truncated spherical portion is larger than the outer diameter of the fixed section.

6. The anti-detachment combined breathing mask according to claim 1, characterized in that: The rigid mask frame also includes a forehead support base, which has a support rod extending from the ring frame toward the top and an abutment block disposed at the free end of the support rod.

7. The anti-detachment combined breathing mask according to claim 1, characterized in that: It also includes a gas delivery unit, which includes a connecting ring detachably assembled to the central portion and a tube connected to the connecting ring. The connecting ring has an inner annular surface defining a through hole, an outer annular surface surrounding the inner annular surface and forming an annular groove, and a front annular surface and a rear annular surface connecting the inner annular surface and the outer annular surface. The connecting ring is located in a through hole in the central portion and is embedded and connected to the central portion through the annular groove.

8. The anti-detachment combined breathing mask according to claim 7, characterized in that: The tube has a connecting end and several elastic hooks extending from the connecting end toward the rear side. The elastic hooks can pass through the through hole of the connecting ring and be snapped onto the rear ring surface.

9. The anti-detachment combined breathing mask according to claim 1, characterized in that: It also includes a strap unit, which includes several lugs located on the left and right sides of the rigid mask frame and several straps that pass through and connect the lugs.

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