JP2015134165A - Respiratory protection mask - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a respiratory protection mask capable of decreasing the air pressure drop when a wearer breathes in.SOLUTION: According to an embodiment of the present device, the respiratory protection mask comprises: a seal face piece element; a valve seat including an inhalation unit in which an inhalation port is formed and an exhalation unit in which an exhalation port is formed; an inhalation valve for selectively blocking the inhalation port; and an exhalation valve for selectively blocking the exhalation port. The inhalation unit comprises: a support element configured to be arranged in the inside of the inhalation port to support the inhalation valve; and at least one support rib having one end part which is connected to an inner peripheral surface of the inhalation port, the other end part connected to the support element, and a vertical cross-sectional area which decreases toward the front of the inhalation port.

Description

  The apparatus relates to a respiratory protection mask.

  Respiratory masks have been used to block dust, dirt particles, odors, gases, etc. that flow into a person's mouth and nose, and various forms of the mask are used depending on their use. The In particular, in the industrial field, it is necessary to use a respirator mask for reasons of worker health and safety.

  The respiratory protection mask is configured to exhaust air to the outside of the respiratory protection mask when the user exhales and an inhalation unit configured to introduce air into the respiratory protection mask when the user inhales A breathing unit. The inhalation unit and the exhalation unit may each include an inhalation valve and an exhalation valve configured to selectively block air flow (Korea Patent Application Publication No. 10-2006-0039128 (published date: May 2006). 8) and Korean Patent Application Publication No. 10-2010-0075459 (publication date: July 2, 2010)).

  The intake valve provided in the above-described respiratory protection mask may be a film in the form of a thin film, and the intake valve support unit configured to support the intake valve selects the intake port as the intake valve. It may be provided in the intake unit so that it can be closed. The intake valve support unit is disposed at the center of the intake port and configured to support the intake valve, and at least configured to support the support unit extending in a direction transverse to the intake port One rib may be included. The at least one rib may be formed in a bar shape having a rectangular cross section, and may be provided in a shape extending from the edge of the intake port to the center.

Korean Patent Application Publication No. 10-2006-0039128 Korean Patent Application Publication No. 10-2010-0075459

  However, the above-described technique has the following problems.

  At least one rib across the intake port prevents air flow through the intake port. As a result, there is a problem that the pressure of air passing through the intake port is reduced.

  Further, since the strength of at least one rib is low, there is a problem that the rib may be easily broken when an impact is applied or when a predetermined external force is applied.

  There is also the problem that the size of the respiratory protection mask is large and therefore inconvenient to use.

  An embodiment of the present apparatus aims to solve the above problems and to provide a respiratory protection mask that can reduce the pressure drop of air when the wearer inhales.

  A respiratory protection mask is also provided that can reduce damage to the ribs that support the intake valve.

  In addition, a respiratory protection mask that can reduce its size is also provided.

  According to one aspect of the apparatus, a seal face piece element, a valve seat including an inhalation unit in which an inhalation port is formed and an exhalation unit in which an exhalation port is formed, an inhalation valve that selectively closes the inhalation port, and exhalation A respiratory protection mask is provided that includes an exhalation valve that selectively occludes the port, wherein the inhalation unit includes a support element disposed inside the inhalation port and configured to support the inhalation valve, and an inner peripheral surface of the inhalation port One end connected to the support element, the other end connected to the support element, and at least one support rib having a vertical cross-sectional area that decreases toward the front of the intake port when viewed from the support element.

  According to another aspect of the present invention, a valve seat including a seal face piece element, an upper part to which an inhalation valve is attached, a lower part that is inclined rearward of the upper part and to which an exhalation valve is attached, and protrudes from the lower part. A respiratory protection mask including a frame formed to support the exhalation valve and having a protruding length that increases toward the lower end.

  According to the embodiment of the present apparatus, it is possible to provide a respiratory protection mask that can reduce the pressure drop of air when the wearer inhales.

  Moreover, the respiratory protection mask which can reduce the damage of the rib which supports an intake valve can be provided.

  In addition, a respiratory protection mask that can reduce the size of the respiratory protection mask can be provided.

It is a perspective view of the respiratory protection mask which concerns on one Embodiment of this apparatus. It is a front view of the respiratory protection mask of FIG. It is a rear view of the respiratory protection mask of FIG. It is a disassembled perspective view of the respiratory protection mask of FIG. FIG. 5 is a rear perspective view of the seal face piece element of FIG. 4. FIG. 5 is a rear perspective view of the yoke of FIG. 4. It is a back surface perspective view of the valve seat of FIG. It is a side view of the valve seat of FIG. It is a rear view of the intake valve support means of the intake unit of the valve seat of FIG. It is sectional drawing which follows the II line | wire of FIG. It is sectional drawing which follows the II-II line of FIG. FIG. 5 is a perspective view when the seal face piece element and the valve seat of FIG. 4 are coupled. FIG. 13 is a perspective view when the lower end of the yoke is coupled in a state where the seal face piece element and the valve seat of FIG. 12 are coupled. FIG. 14 is a cross-sectional view of the seal face piece element, the valve seat of FIG. It is a simulation result which shows the change of the air quantity which passes the intake port of the respiratory protection mask which concerns on embodiment of this apparatus. It is a simulation result which shows the change of the pressure of the air which passes the inhalation port of the respiratory protection mask which concerns on embodiment of this apparatus.

  The drawings show only exemplary embodiments of the device and should therefore not be considered as limiting its scope. This is because the device may allow other equally effective embodiments. The elements and features shown in the drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of an exemplary embodiment of the device.

  Hereinafter, detailed embodiments for carrying out the scope and spirit of the present apparatus will be described in detail with reference to the accompanying drawings. It should be understood that the drawings are not drawn to scale for convenience of explanation.

  FIG. 1 is a perspective view of a respiratory protection mask according to an embodiment of the present apparatus. FIG. 2 is a front view of the respiratory protection mask of FIG. 3 is a rear view of the respiratory protection mask of FIG.

  1-3, a respiratory protection mask 10 according to one embodiment of the present apparatus includes a seal face piece element 100 configured to make intimate contact with a wearer's face, and a seal face piece element 100. Wearing the valve seat 200 configured to be coupled to the intake valve 500 and to which the inhalation valve 500 and the exhalation valve 600 are mounted, the yoke 300 that covers the seal face piece element 100 and the front portion of the valve seat 200, and the respiratory protection mask 10 And a strap 400 connected to the loop 350 of the yoke 300 for securing to the person's head.

  In the description of the present embodiment, with respect to the respiratory protection mask 10, the direction in which the wearer's face is located is defined as the rear (minus direction in the X axis in FIG. 1), and the opposite direction is the front (X axis in FIG. In the positive direction), the direction in which the wearer's nose is located is defined as up (the positive direction in the Z-axis in FIG. 1), and the opposite direction is down (the negative direction in the Z-axis in FIG. 1). ).

  The seal face piece element 100 may be sized to cover the wearer's nose and mouth and may be formed from a soft material so as to be in intimate contact with the wearer's face. As an example, the seal face piece element 100 may be formed from an elastically deformable material, such as rubber or silicone, and deformed to a predetermined level by a strap 400 made of an elastic material, and close to the wearer's face. You may touch. For this reason, the rear part of the seal face piece element 100 may have a curved form corresponding to a human face shape.

  The valve seat 200 is coupled to the seal face piece element 100 at the rear of the seal face piece element 100 and supports the intake valve 500 and the exhalation valve 600. Specifically, the valve seat 200 has an intake unit 220 (FIG. 4) through which air passes when the wearer inhales while the intake valve 500 is coupled, and an exhalation valve 600 coupled with the wearer. And an exhalation unit 230 (FIG. 4) through which air passes when exhaling.

  The intake unit 220 includes an intake port 201 through which air passes. The intake valve 500 is disposed at the rear portion of the intake port 201 and is partially exposed to the front portion of the respiratory protection mask 10 through the intake port 201. The intake unit 220 includes intake valve support means configured to support the intake valve 500. The intake valve support means is provided at the support element 221 of the intake port 201 inserted into the center hole 510 (FIG. 4) of the intake valve 500 and the rear end portion of the support element 221 so that the intake valve 500 is detached. A locking protrusion 222 configured to prevent, and at least one support rib 223 configured to connect the support element 221 and the inner peripheral surface of the intake port 201 to support the intake valve 500. . Since the intake valve 500 is disposed between the support rib 223 and the lock projection 222 in the front-rear direction of the respiratory protection mask 10, the lock projection 222 cannot be exposed to the outside as viewed from the front of the respiratory protection mask 10. Hereinafter, the detailed structure and function of the intake valve support means will be described.

  The intake valve 500 partially opens the intake port 201 when the wearer inhales and allows air to be introduced into the seal face piece element 100 through the intake port 201 when the wearer does not inhale. In order to prevent this, the intake port 201 may be blocked.

  A predetermined filtration cartridge device (not shown) may be coupled to the front end portion of the intake unit 220 in order to remove debris and harmful substances contained in the air. According to the action of the filtration cartridge device, it is possible to prevent debris and harmful substances from being introduced into the wearer's respiratory system when the wearer breathes.

  The exhalation unit 230 includes an exhalation port 202 (FIG. 4) through which air passes. The exhalation valve 600 may be disposed in front of the exhalation port 202 and may selectively block the exhalation port 202. Specifically, the exhalation valve 600 partially opens the exhalation port 202 when the wearer exhales, and air seals through the exhalation port 202 when the wearer does not inhale or exhale. The exhalation port 202 may be blocked to prevent introduction into the facepiece element 100. The exhalation valve 600 may include an insertion protrusion 610 that protrudes rearward and may be secured to the valve seat 200 when the insertion protrusion 610 is inserted into the valve seat 200.

  Inhalation valve 500 and exhalation valve 600 may be a diaphragm formed from a soft material that can be deformed by changes in the pressure of air produced when the wearer inhales or exhales, or a material such as It may be formed from rubber or silicone.

  The yoke 300 may partially cover the front face of the seal face piece element 100 and the valve seat 200, and specifically, may be formed in a shape that covers the exhalation valve 600. The rear surface of the exhalation valve 600 and the rear surface of the yoke 300 may be spaced apart from each other by a predetermined distance, and air exhausted through the exhalation unit 230 when the wearer exhales is below the respiratory protection mask 10. An air discharge space may be formed under the respiratory protection mask 10 so as to be discharged to the side.

  The ring-shaped loop 350 to which the strap 400 is connected may be formed on both sides of the yoke 300. The strap 400 may include a length adjusting member 410.

  Under the condition that the strap 400 is connected to the loop 350, the wearer brings the seal face piece element 100 into intimate contact with his face so that the seal face piece element 100 covers his nose and mouth, and the strap The length adjustment member 410 may be manipulated so that 400 applies an appropriate force to the seal face piece element 100. Accordingly, the seal face piece element 100 may be elastically deformed to make intimate contact with the wearer's face, and air may only enter the seal face piece element 100 according to the action of the inspiratory valve 500 and the exhalation valve 600. It may be introduced or discharged from the inside to the outside of the seal face piece element 100.

  Hereinafter, detailed features of the above-described components of the respiratory protection mask 10 will be described in detail with reference to the accompanying drawings.

  FIG. 4 is an exploded perspective view of the respiratory protection mask of FIG. FIG. 5 is a rear perspective view of the seal face piece element depicted in FIG. FIG. 6 is a rear perspective view of the yoke depicted in FIG. FIG. 7 is a rear perspective view of the valve seat depicted in FIG. FIG. 8 is a side view of the valve seat depicted in FIG.

  Referring to FIGS. 4-8, the respiratory protection mask 10 is coupled using one method, in which the valve seat 200 to which the inspiratory valve 500 and the exhalation valve 600 are coupled is connected to the seal facepiece element 100. Coupled and the yoke 300 is coupled with the inhalation unit 220 and the exhalation unit 230 that are exposed forward through the seal face piece element 100.

  Although this embodiment illustrated the case where the intake valve 500 and the exhalation valve 600 are combined with the valve seat 200 before the valve seat 200 is combined with the seal face piece element 100, the connection between the intake valve 500 and the exhalation valve 600 is illustrated. The order is not limited to this. For example, the intake valve 500 and the exhalation valve 600 may be coupled with the valve seat 200 after the valve seat 200 is coupled with the seal face piece element.

  The seal face piece element 100 includes a seal face piece element body 110 formed so as to cover the wearer's nose and mouth, and a bent portion that forms a rear portion of the seal face piece element body 110 and in close contact with the wearer's face. It may include a portion 120, a first surface 130 provided on the upper side of the seal face piece element body 110, and a second surface 140 provided on the lower side of the seal face piece element body 110.

  The seal face piece element main body 110 is formed in a shape such that its rear surface opens and projects forward. The valve seat 200 may be coupled to the seal face piece element body 110 to be received inside the seal face piece element body 110. In this case, the valve seat 200 is mounted and fixed to the first surface 130 and the second surface 140.

  A yoke mounting portion 112 that can be mounted while fixing the yoke 300 to the valve seat 200 may be formed on the front surface of the seal face piece element main body 110. The yoke mounting portion 112 may be formed so as to correspond to the outer peripheral shape of the rear surface of the yoke 300, and has a stepped surface form in which the front surface of the seal face piece element main body 110 is pushed down by a predetermined depth. May be provided.

  The first surface 130 may be in intimate contact with the upper portion 211 where the intake unit 220 of the valve seat 200 is formed. The second surface 140 may be in intimate contact with the lower portion 212 of the valve seat 200 where the exhalation unit 230 is formed. In this case, the second surface 140 may be provided so as to be inclined rearward relative to the first surface 130. Accordingly, a part of the exhalation unit 230 may protrude forward of the seal face piece element 100, and the lower part of the yoke 300 may be coupled to the exhalation unit 230.

  A first hole 101 into which the intake unit 220 is inserted may be formed in the first surface 130. A second hole 102 into which the exhalation unit 230 is inserted may be formed in the second surface 140. Since the intake unit 220 in which the intake port 201 is formed is inserted into the first hole 101, the first hole 101 forms a part of the intake path. Further, since the exhalation unit 230 in which the exhalation port 202 is formed is inserted into the second hole 102, the second hole 102 forms a part of the exhalation path.

  As will be described below, the outer periphery of the first hole 101 may be inserted into the upper coupling portion 229 of the valve seat 200, and the outer periphery of the second hole 102 may be inserted into the valve seat 200. It may be inserted into the lower coupling part 237. In this way, both the upper and lower portions of the seal face piece element 100 can be firmly coupled and fixed to the valve seat 200.

  On the other hand, the yoke 300 is formed on both sides of the yoke body 310, the yoke body 310 partially covering the seal face piece element 100 and the front surface of the valve seat 200, the joint 320 formed on both rear surfaces of the yoke body 310. And a loop 350 to which the strap 400 is connected.

  An intake path 301 may be formed at a position corresponding to the first hole 101 and the intake unit 220 in the upper part of the yoke body 310.

  A yaw clock portion 312 that fixes the upper portion of the yoke body 310 to the valve seat 200 may be formed in the vicinity of the intake passage 301 of the yoke body 310. The yaw clock portion 312 may be provided in the form of a protrusion that protrudes toward the center of the intake passage 301 along the outer periphery of the intake passage 301, and the short edge portion 228 formed in the intake unit 220. The upper portion of the yoke body 310 may be fixed to the valve seat 200 when hooked onto the valve seat 200. Since the joint 320 and the yaw clock portion 312 can be fastened and fixed to the yoke fixing groove 235 and the short edge portion 228 of the valve seat 200, the yoke 300 has a double fixing structure, and the yoke 300 is firmly attached to the valve seat 200. The yoke 300 cannot be easily detached from the valve seat 200 even when there is an external impact.

  The yoke body 310 may be formed in a shape in which both sides of the lower portion extend rearward. The center of the lower portion of the yoke body 310 may be formed in a shape protruding forward. The exhalation path 302 may be formed by a portion extending rearward of the lower portion of the yoke body 310 and a portion protruding forward of the lower portion of the yoke body 310. Air exhausted through the exhalation port 202 is exhausted outside the respiratory protection mask 10 through the exhalation path 302.

  The joint 320 is formed on both rear surfaces of the yoke body 310. The joint 320 may be formed in a cylindrical or hemispherical shape so that the yoke 300 can rotate around the joint 320. This embodiment illustrates the case where the joint 320 is formed in a hemispherical shape. The joint 320 may be inserted into the yoke fixing groove 235 of the valve seat 200 in the assembly process of the yoke 300.

  The valve seat 200 may include a seat body 210 having an upper portion 211 and a lower portion 212, an inhalation unit 220 provided in the upper portion 211, and an exhalation unit 230 provided in the lower portion 212. That is, the valve seat 200 may include both the inhalation unit 220 and the exhalation unit 230. By doing so, the total number of components of the respiratory protection mask 10 can be reduced and the structure can be simplified. In order to insert the joint 320, the yoke 300 may be elastically deformed to a certain level.

  The upper portion 211 may be formed so that the intake unit 220 can flow air in the front-rear direction of the respiratory protection mask 10 in a state where the respiratory protection mask 10 is worn. The front surface of the upper portion 211 may be in intimate contact with the rear surface of the first surface 130 of the seal face piece element 100.

  Further, the lower portion 212 may be formed in a shape that is inclined rearward at a predetermined angle with respect to the upper portion 211. In this way, the size of the respiratory protection mask 10, specifically, the vertical length of the respiratory protection mask can be made shorter. The front surface of the lower portion 212 may be in intimate contact with the rear surface of the second surface 140 of the seal face piece element 100.

  The embodiment exemplifies a case where the air communication direction of the inhalation unit 220 and the exhalation unit 230 is the front-rear direction when the respiratory protection mask 10 is worn. The front-rear direction in this specification is illustrated in FIG. It may be understood to include not only the X-axis direction but also directions that are tilted conceptually at approximately the same level.

  The intake unit 220 may be formed in a substantially tubular shape protruding from the upper portion 211, and may include the intake port 201 and the intake valve support means as described above. The intake port 201 is a hole that penetrates the upper portion 211 in the front-rear direction, and provides a path through which air passes when the wearer inhales.

  The intake unit 220 is formed on the free end side, to which a filtration cartridge or the like may be connected, and an upper extension 227 that is disposed at the rear of the attachment 226 and has a diameter that increases in the radial direction. And a short edge 228 formed at the end of the upper extension 227 and an upper coupling part 229 provided between the upper extension 227 and the front surface of the upper part 211.

  The upper extension part 227 may be formed to have a larger diameter than the first hole 101. When the valve seat 200 is coupled with the seal face piece element 100, the first surface 130 is elastically deformed due to interference with the upper extension 227 and returns to its original state again, The extension part 227 may be moved rearward and inserted into the upper coupling part 229.

  The upper coupling part 229 may have a size corresponding to the diameter of the first hole 101, and may be provided in a groove shape between the upper extension part 227 and the front surface of the upper part 211. Good. When the first surface 130 is inserted into the upper coupling portion 229, the coupling state between the seal face piece element 100 and the intake unit 220, that is, the coupling state between the upper portion 211 of the valve seat 200 is more than a specific level. An external force can be maintained before being applied to the seal face piece element 100.

  The short edge portion 228 may be formed at the rear end portion of the upper extension portion 227 along the outer periphery of the upper extension portion 227. The yaw clock part 312 formed on the rear surface of the yoke 300 may be elastically deformed beyond the upper extension part 227 and inserted into the short edge part 228. In this way, the yoke 300 can be fixed to the valve seat 200.

  On the other hand, the intake valve 500 formed of a soft material may have a size capable of closing the intake port 201 and may include a central hole 510 to be coupled with the intake unit 220. The intake valve 500 may be coupled to the intake valve support means of the intake unit 220 and supported from the rear of the valve seat 200. When the wearer inhales, the pressure between the inside and the outside of the respiratory protection mask 10 Due to the difference, the intake port 201 is pulled backwards (the inside of the respiratory protection mask 10 is in a low pressure state), and when the wearer exhales, it is between the inner side and the outer side of the respiratory protection mask 10. Due to the pressure difference, the intake port 201 is in close contact with the intake valve support means (the inside of the respiratory protection mask 10 is in a high-pressure state) to close the intake port 201.

  9 is a rear view of the intake valve support means of the intake unit of the valve seat of FIG. 10 is a cross-sectional view taken along the line II of FIG. 11 is a cross-sectional view taken along line II-II in FIG.

  Referring to FIGS. 9 to 11, the intake valve support means is provided inside the intake port 201, and may include the support element 221, the lock protrusion 222, and the support rib 223 as described above.

  The support element 221 may be inserted into the center hole 510 of the intake valve 500 and supported by the plurality of support ribs 223, and may be disposed at the center of the intake port 201. The support element 221 may be formed in a cylindrical shape whose central axis is parallel to the air communication direction, and may have a diameter corresponding to the size of the central hole 510.

  The lock protrusion 222 prevents the intake valve 500 inserted into the support element 221 from being detached during the breathing motion of the wearer, and has a predetermined length in the radial direction of the intake port 201 from the rear end of the support element 221. You may have the form of the protrusion which protrudes only by this. The plurality of lock protrusions 222 may be provided in the circumferential direction of the support element 221. This embodiment exemplifies a case where three lock protrusions 222 are provided with a predetermined interval therebetween. When the wearer inhales, the intake valve 500 is moved rearward to open the intake port 201 and is blocked by the locking protrusion 222 and cannot be removed from the support element 221.

  The support rib 223 extends from the inner peripheral surface of the intake port 201, supports the support element 221, and restricts the forward movement of the intake valve 500. A plurality of support ribs 223 may be provided. That is, the intake valve 500 is disposed behind the support rib 223, and the front surface of the intake valve 500 is supported by the support rib 223. Although this embodiment has illustrated the case where the three support ribs 223 are arrange | positioned with a predetermined space | interval between them, the number of the support ribs 223 and the position of a support rib may be changed.

  The support rib 223 is connected to the front of the support element 221 with respect to the lock protrusion 222. Therefore, the intake valve 500 can move between the lock protrusion 222 and the support rib 223.

  Further, the support rib 223 may have a wedge-shaped cross section that is pointed forward when viewed from the position of the support element 221. In other words, the vertical cross-sectional area of the support rib 223 decreases toward the front of the intake port 201. In the present embodiment, the vertical cross-sectional area is a cross-sectional area along a plane perpendicular to the X axis in FIG. According to such a shape, when air is introduced into the intake port 201, the pressure drop of air due to the support rib 223 is reduced, and the amount of air can be distributed more uniformly.

  Conventionally, the support rib provided on the inspiratory port of the respiratory protection mask has been provided in the form of a bar having a simple rectangular cross section without any change in the vertical cross-sectional area. Worked as a pressure drop and unstable flow phenomenon. However, according to the support rib 223 of the present embodiment, the air introduced through the intake port 201 can be smoothly dispersed and moved along the support rib 223, so that the function as resistance is reduced, and the pressure drop amount and Unstable flow phenomena can be reduced.

  In particular, the front end portion of the support rib 223 may be processed to be rounded, may include a portion in which the amount of change in the vertical cross-sectional area increases toward the front, and when viewed from the position of the support element 221. A substantially streamlined cross section of the support rib 223 may be formed. In this case, the pressure drop amount of air passing through the intake port 201 and the unstable flow phenomenon can be further reduced.

  Further, the support rib 223 may be formed in a shape in which the cross-sectional area increases as the distance from the support element 221 when viewed from the support element 221. That is, the width of the support rib 223 can decrease toward the support element 221 when the intake port 201 is viewed from the front.

  According to the above-described structure, the support rib 223 can be more firmly fixed to the inner peripheral surface of the intake port 201, and the support rib can effectively support the intake valve 500 with a small area.

  On the other hand, the support rib 223 may include a groove 224 that opens rearward. The depth and width of the groove 224 may be configured to increase as the injection product surrounding the groove 224 moves away from the support element 221 to maintain a constant thickness. Further, the groove 224 may extend along the extending direction of the support rib 223.

  Since the groove 224 is formed, the support rib 223 can be structurally strengthened. Further, when the wearer exhales, the intake valve 500 comes into close contact with the rear surface of the support rib 223. When the groove 224 is formed, a phenomenon in which a part of the intake valve 500 is moved into the groove 224 may occur, so that the intake valve 500 can be in close contact with the support rib 223 more reliably.

  On the other hand, the exhalation unit 230 projects from the lower part 212 and crosses the exhalation port 202 formed in the frame 231, the exhalation port 202 formed in the frame 231, and the exhalation port 202. It may include a plurality of support ribs 232, insertion holes 233 into which the insertion protrusions 610 of the exhalation valve 600 can be inserted, and yoke fixing grooves 235 that are formed on both sides of the frame 231 and into which the joint 320 of the yoke 300 is inserted. .

  The frame 231 may be formed to have a protruding length that gradually increases from the upper end to the lower end. In this way, the front surface with which the exhalation valve 600 is in close contact can be formed in a direction substantially perpendicular to the direction of gravity or the direction toward the upper end. That is, the exhalation-valve 600 can be arrange | positioned so that it may extend in a gravitational direction, or the upper end part 600a can be arrange | positioned back rather than the lower end part 600b. Specifically, the frame 231 may be formed in a state where the front surface is not inclined forward or backward while the respiratory protection mask 10 is worn, or in a state where the front surface is inclined forward. Therefore, the exhalation-valve 600 can be in close contact with the front surface of the frame 231 if there is no external force from the outside while the wearer does not inhale or exhale. When the state in which the exhalation valve 600 is tilted is described in this embodiment, “tilt backward” means that the upper end portion 600a of the exhalation valve 600 is disposed in front of the lower end portion 600b. “Inclined forward” means that the upper end portion 600a of the exhalation valve 600 is disposed behind the lower end portion 600b.

  The water exhaled by the wearer may collect on the rear surface of the exhalation valve 600. Due to moisture, the weight of the exhalation valve 600 may increase and may drip from the free end of the exhalation valve 600. In this case, there is a possibility that the exhalation port 202 opens even when the wearer does not inhale or exhale. Considering the environment in which the respiratory protection mask 10 is worn, serious safety problems for the wearer can occur.

  However, according to the present embodiment, when the wearer is not exhaling, the exhalation valve 600 can be kept in close contact with the front surface of the frame 231. Therefore, the above-described safety problem can be avoided.

  That is, the lower portion 212 of the valve seat 200 is formed to be inclined rearward relative to the upper portion 211, and the frame 231 is formed to further protrude toward the lower end. The respiratory protection mask 10 according to this embodiment can have a small size, and allows the exhalation valve 600 to operate stably. Therefore, the wearability and usefulness of the respiratory protection mask 10 can be enhanced.

  The exhalation valve 600 may be formed from a soft material having a size that can block the exhalation port 202. An insertion protrusion 610 that is elastically deformed and inserted into the insertion hole 233 may be provided on the rear surface of the exhalation valve 600.

  When the wearer inhales, the exhalation valve 600 can receive a force drawn into the respirator mask 10, similar to the inspirator valve 500, because the inside of the respirator mask 10 has a lower pressure than the outside. However, since the exhalation valve 600 is supported by the support rib 232, the exhalation valve can close contact with the front surface of the frame 231 to close the exhalation port 202. When the wearer exhales, the inner side of the respiratory protection mask 10 has a higher pressure than the outer side thereof, so that the free end (lower end) of the exhalation valve 600 is pushed out against the insertion protrusion 610, and therefore the exhalation port 202 opens. Therefore, air can be discharged to the outside of the respiratory protection mask 10.

  The yoke fixing groove 235 may be provided on both side surfaces of the frame 231. The height of the protrusion forming the groove decreases toward the front so that the joint 320 is smoothly guided by the yoke fixing groove 235. The yoke fixing groove 235 may have a shape corresponding to the shape of the joint 320 and is formed so that the yoke 300 can rotate around the joint 320.

  If the yoke fixing grooves 235 are provided on both side surfaces of the frame 231 as in this embodiment, the valve seat 200 does not need to have a large length in order to add a structure for fixing the lower portion of the valve seat 200. Therefore, the vertical length of the valve seat 200 can be set to be smaller.

  On the other hand, a lower extending portion 236 and a lower connecting portion 237 having functions corresponding to the upper extending portion 227 and the upper connecting portion 229 of the intake unit 220 may be formed at the rear end portion of the frame 231.

  Specifically, the lower extension 236 is formed to have a larger diameter than the second hole 102. When the valve seat 200 is coupled with the seal face piece element 100, the second surface 140 is elastically deformed due to interference with the lower extension 236 and returns to its original state again, It may be moved behind the lower extension 236 and inserted into the lower coupling part 237.

  The lower coupling part 237 may have a size corresponding to the diameter of the second hole 102, and is provided in a groove shape between the lower extension part 236 and the front surface of the lower part 212. May be. When the second surface 140 is inserted into the lower coupling portion 237, the coupling state between the seal face piece element 100 and the exhalation unit 230, that is, the coupling state with the lower portion 212 of the valve seat 200 is more than a specific level. Can be maintained before the external force is applied to the seal face piece element 100.

  Hereinafter, a method for assembling the respiratory protection mask 10 having the above-described configuration will be described in detail.

  FIG. 12 is a perspective view when the seal face piece element and the valve seat of FIG. 4 are combined. 13 is a perspective view when the lower end of the yoke is coupled in a state where the seal face piece element and the valve seat of FIG. 12 are coupled. FIG. 14 is a cross-sectional view of the seal face piece element, the valve seat of FIG.

  Referring to FIGS. 12 to 14, while the intake valve 500 is coupled to the intake unit 220 from the rear of the valve seat 200 and the exhalation valve 600 is coupled to the exhalation unit 230 from the front of the valve seat 200, 200 is coupled with the seal face piece element 100.

  In this case, the first surface 130 is elastically deformed and inserted into the upper coupling part 229, and the second surface 140 is elastically deformed and inserted into the lower coupling part 237. Therefore, the rear face of the seal face piece element 100 can come into close contact with the front face of the valve seat 200. The attachment portion 226, the upper extension portion 227, and the short edge portion 228 of the intake unit 220 pass through the first hole 101 and are exposed forward. The frame 231, the yoke fixing groove 235, and the lower extension 236 of the exhalation unit 230 pass through the second hole 102 and are exposed forward.

  When the coupling between the seal face piece element 100 and the valve seat 200 is completed, the yoke 300 is coupled with the valve seat 200. Specifically, the joint 320 of the yoke 300 is first inserted into the yoke fixing groove 235. Thereafter, by rotating the yoke 300 upward, the yaw clock portion 312 is elastically deformed, and then the yaw clock portion 312 is locked to the short edge portion 228. Therefore, the yoke 300 can be fixed to the valve seat 200.

  In this case, the attachment portion 226 of the intake unit 220 may pass through the intake path 301 and be exposed forward, and thereafter be coupled to a filtration cartridge or the like.

  The strap 400 may be connected to the loop 350 of the yoke 300 in any procedure during the assembly process.

  As described above, since the respiratory protection mask 10 according to this embodiment can be easily assembled without using a fastening method that requires a separate device for coupling such as bolts or welding, the manufacturing productivity is improved. be able to. In particular, since the valve seat 200 includes both the inhalation unit 220 and the exhalation unit 230, in other words, because the inhalation unit 220 and the exhalation unit 230 are manufactured as one component, the components of the respiratory protection mask 10 By reducing the total number, the valve seat 200 and the seal face piece element 100 can be easily assembled. As a result, the manufacturing productivity of the respiratory protection mask 10 can be improved.

  Hereinafter, functions and effects of the respiratory protection mask 10 having the above-described configuration according to this embodiment will be described.

  When the assembly is completed by the process described above, the user can wear the respiratory protection mask 10 using the strap 400.

  The respiratory protection mask 10 closes the wearer's nose and mouth when worn. As the wearer breathes, the inhalation valve 500 and the exhalation valve 600 can be deformed and air can flow into the respirator mask 10 or air can be exhausted from the inside of the respirator mask 10.

  Specifically, when the wearer inhales, the intake valve 500 moves backward while being inserted into the support element 221, or is deformed to open the intake port 201, and the exhalation valve 600 is Close contact with the front surface of the frame 231 closes the exhalation port 202. Thus, air can flow into the respiratory protection mask 10 through the intake port 201. When the wearer exhales, the intake valve 500 is moved while being inserted into the support element 221 supported by the support rib 223 to block the intake port 201, and the exhalation valve 600 is detached from the front surface of the frame 231. Then, the exhalation port 202 is opened. Therefore, air can be exhausted to the outside of the respiratory protection mask 10 through the exhalation port 202.

  According to the above-described function, it is possible to prevent debris or harmful substances outside the respiratory protection mask 10 from being introduced into the wearer's airway.

  In particular, in the present embodiment, the support rib 223 has a shape in which the vertical cross-sectional area decreases toward the front of the intake port 201, so that the air pressure drop generated in the intake unit 220 when the wearer inhales and Unstable flow phenomenon can be reduced. Therefore, the wearer can inhale a sufficient amount of air with little effort, and can easily breathe.

  In particular, the front end portion of the support rib 223 is processed to be round and has a substantially streamlined shape, so that an air pressure drop and an unstable flow phenomenon can be more effectively avoided.

  Further, when the groove 224 is formed on the rear surface of the support rib 223, the support rib 223 can be structurally strengthened, deformation in the injection process can be avoided, and the intake valve 500 can be more closely attached to the support rib 223. Can be supported.

  FIG. 15 is a simulation result showing a change in the amount of air passing through the intake port of the respiratory protection mask according to the embodiment of the present apparatus. FIG. 16 is a simulation result showing a change in pressure of air passing through the intake port of the respiratory protection mask according to the embodiment of the present apparatus.

  15 and 16, the simulation result on the left side is a simulation result of a respiratory protection mask to which the support rib in the related art having no change in the vertical cross-sectional area is applied. The simulation result on the right side is a simulation result of the respiratory protection mask to which the support rib according to this embodiment having a shape in which the vertical cross-sectional area decreases toward the front is applied.

  Referring to FIGS. 15 and 16, it can be understood that in the embodiment, the air flow having a predetermined velocity gradient passing through the intake unit 220 is more stably distributed, and the pressure drop amount is further reduced.

  Embodiments of the apparatus are described below.

  Item 1 includes a seal face piece element, a valve seat including an inhalation unit in which an inhalation port is formed and an exhalation unit in which an exhalation port is formed, an inhalation valve that selectively closes the inhalation port, and an exhalation port selectively A breathing protection mask including a closing exhalation valve, wherein the inhalation unit is disposed inside the inhalation port and is configured to support the inhalation valve, and one end connected to the inner peripheral surface of the inhalation port A respiratory protection mask comprising a portion, a second end connected to the support element, and at least one support rib having a vertical cross-sectional area that decreases toward the front of the inhalation port when viewed from the support element.

  Item 2 is the respiratory protection mask of item 1, wherein the support rib has a wedge shape extending forward from the intake port.

  Item 3 is the respiratory protection mask of item 1 or item 2, wherein the support rib has a rounded front end.

  Item 4 is the respiratory protection mask of items 1 to 3, wherein the support rib includes a portion in which the amount of change in the vertical cross-sectional area increases toward the front of the intake port.

  Item 5 is the respiratory protection mask of items 1-4, wherein when viewed from the support element, the cross-sectional area of the support ribs increases with distance from the support element.

  Item 6 is the respiratory protection mask of items 1 to 5, wherein a groove that opens rearward is formed on the rear surface of the support rib.

  Item 7 is the respiratory protection mask of items 1 to 6, wherein the groove extends along the extending direction of the support rib.

  Item 8 includes a seal face piece element, a valve seat including an upper part to which the inhalation valve is attached and a lower part to which the exhalation valve is attached by being tilted rearward from the upper part, and projecting from the lower part to support the exhalation valve And a frame having a protruding length formed toward the lower end.

  Item 9 is the respiratory protection mask of item 8, wherein the front part of the frame with which the exhalation valve is in intimate contact is configured such that the exhalation valve extends longitudinally in the direction of gravity. .

  Item 10 is the breath of items 8 and 9, wherein the front part of the frame with which the exhalation valve is in intimate contact is configured such that the upper end of the exhalation valve is positioned behind the lower end. It is a protective mask.

  Item 11 further includes a yoke that partially covers the front surface of the seal face piece element, a joint is formed on the lower side of the rear surface of the yoke, and yoke fixing grooves to which the joint is coupled are formed on both side surfaces of the frame. The respiratory protection mask of items 8-10.

  Item 12 is assembled by a method in which the yoke can be rotated about the joint and the yoke is first coupled using the joint and then rotated so that the upper side of the yoke is coupled to the valve seat. ~ 11 respiratory protection masks.

  Item 13 is a short formed on the end of the upper extension part, in which an upper coupling part that is a groove into which the seal face piece element is inserted and an upper extension part that forms the upper coupling part are provided in the valve seat. The respirator mask according to items 8 to 12, wherein a yaw clock portion inserted into the edge portion is formed on the rear surface of the yoke, and the yaw clock portion is elastically deformed and inserted into the short edge portion.

  Item 14 is the respiratory protection mask of items 8-13, wherein the valve seat is coupled to the back of the seal face piece element.

  The detailed embodiments of the respiratory protection mask of the present invention have been described above. However, these are merely examples, and the present invention is not limited to these examples, and the basic idea disclosed in this specification. Can be construed to have the widest range. Those skilled in the art may implement patterns of unintended shapes by combining and replacing the disclosed embodiments without departing from the scope of the apparatus. In addition, those skilled in the art may easily change and modify the disclosed embodiments based on this specification, and it is obvious that such changes and modifications fall within the scope of the apparatus. .

DESCRIPTION OF SYMBOLS 10 ... Respiratory mask, 100 ... Seal face piece element, 101 ... First hole, 102 ... Second hole, 110 ... Seal face piece element body, 120 ... Bending part, 130 ... First surface, 140 ... First 2, 200 ... valve seat, 210 ... valve body, 220 ... intake unit, 221 ... support element, 222 ... lock protrusion, 223 ... support rib, 224 ... groove, 226 ... attachment part, 227 ... upper extension part, 228 ... short edge portion, 229 ... upper coupling portion, 230 ... expiration unit, 231 ... frame, 232 ... support rib, 233 ... insertion hole, 235 ... yoke fixing groove, 236 ... lower extension portion, 237 ... lower coupling 300, yoke, 301 ... inspiratory path, 302 ... exhalation path, 310 ... yoke body, 320 ... joint, 350 ... loop, 400 ... strap.

Claims (14)

A seal face piece element;
An inhalation unit in which an inhalation port is formed, and a valve seat including an exhalation unit in which an exhalation port is formed;
An intake valve for selectively closing the intake port;
An exhalation valve for selectively closing the exhalation port;
With
The intake unit is
A support element disposed inside the intake port and configured to support the intake valve;
One end connected to the inner peripheral surface of the intake port, the other end connected to the support element, and at least a vertical cross-sectional area that decreases toward the front of the intake port when viewed from the support element One support rib;
Including a respiratory protection mask.   The respiratory protection mask according to claim 1, wherein the support rib has a wedge shape extending forward from the intake port.   The respiratory protection mask of claim 1, wherein the support rib has a rounded front end.   The respiratory protection mask according to claim 1, wherein the support rib includes a portion in which a change amount of a vertical cross-sectional area increases toward the front of the intake port.   The respiratory protection mask according to claim 1, wherein when viewed from the support element, a cross-sectional area of the support rib increases with distance from the support element.   The respiratory protection mask according to claim 1, wherein a groove that opens rearward is formed on a rear surface of the support rib.   The respiratory protection mask according to claim 6, wherein the groove extends along an extending direction of the support rib. A seal face piece element;
A valve seat including an upper part to which an inhalation valve is attached, and a lower part that is inclined rearward from the upper part and to which an exhalation valve is attached;
A frame that protrudes from the lower portion and is formed to support the exhalation valve and has a protruding length that increases toward the lower end;
Respiratory protection mask comprising.   9. A respiratory protection mask according to claim 8, wherein the front portion of the frame with which the exhalation valve is in intimate contact is arranged such that the exhalation valve extends longitudinally in the direction of gravity. .   The respiration according to claim 8, wherein the front part of the frame with which the exhalation valve is in intimate contact is formed such that the upper end part of the exhalation valve is arranged behind the lower end part. Protective mask.   A yoke that partially covers the front surface of the seal face piece element is further provided, a joint is formed below the rear surface of the yoke, and yoke fixing grooves to which the joint is coupled are formed on both side surfaces of the frame. The respiratory protection mask according to claim 8.   Assembly is accomplished by a method in which the yoke is rotatable about the joint and the yoke is first coupled using the joint and then rotated so that the upper side of the yoke is coupled to the valve seat. The respiratory protection mask according to claim 11.   An upper coupling part, which is a groove into which the seal face piece element is inserted, and an upper extension part that forms the upper coupling part are provided in the seat body, and are formed at the end of the upper extension part. The respiratory protection mask according to claim 11, wherein a yaw clock portion inserted into an edge portion is formed on a rear surface of the yoke, and the yaw clock portion is elastically deformed and inserted into the short edge portion.   The respiratory protection mask of claim 8, wherein the valve seat is coupled to a rear portion of the seal face piece element.