KR100914302B1 - a device for self-locking and unlock for canister of gas mask - Google Patents

Abstract

The present invention relates to a self-locking and releasing device for a gas mask purifier. The present invention, the locking step is formed bent on one side of the purification container; A hook provided at the intake unit of the gas mask to engage with the locking jaw; The intake unit and the purifying container are respectively provided in a state capable of being coupled, and have a structure capable of locking while being rotatable, and are coupled to face each other, and at the same time, allowing the purifying container to allow one-way rotation of the purifying container connected to the intake unit. And a fastener fixed to a predetermined position of the intake unit. According to the present invention, the fastener and the intake unit can be firmly coupled through the fastener.

Description

Self-locking and unlocking device for gas masks {a device for self-locking and unlock for canister of gas mask}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for fixing a purifying tank to an intake unit of a gas mask that intakes air, and relates to an apparatus for rotating a purifying tank to fix it to an intake unit.

Many techniques are used in attaching filter elements to gas masks in the gas mask art.

A general technique is to prepare a threaded cartridge corresponding to the threaded fastening portion of the main body for attaching the filter element to the main body of the gas mask, as can be seen by reference to US Pat. Nos. 5,222,488, 5,063,926 and the like. .

The filter cartridge as described above has a helical or forward helical screw coupled with a female thread, a collar or a socket for accommodating the threaded portion of the filter cartridge, and when the filter cartridge is rotated in an appropriate direction, the cartridge is mounted on the gas mask. Or can be removed from it.

However, as described above, the filter cartridge screwed to the gas mask includes a housing or canister in which the filter material is accommodated, and due to the cylindrical shape of the cartridge, the filter cartridge is typically used as an external accessory, which is a field of view of the wearer. Can interfere.

In addition, the screw-mounted cartridge uses a number of parts that add the total volume of the filter element and the total weight of the gas mask, and the disadvantage of not being able to replace the filter in the contaminated area as well as the easy replacement of the filter.

In order to improve such a problem, a gas mask is disclosed in Korean Patent Registration No. 414326. The configuration of the gas inlet unit 14 is secured in front of the flexible counter part 15 forming the gas mask 10 as shown in FIG. It is connected to hold, the skirt 24 of the clarification tank 12 is in close contact with the outer diameter side through the protruding flange 22 formed at the end of the intake unit 14, is formed on one side of the protruding flange 22 Hooks 34 are formed on one side of the skirt 24 to correspond to the slots 36, and the protruding surfaces 26 and 28 which are in close contact with each other inside the corresponding intake units 14 and the skirt 24 are formed. It is made of a configuration provided.

In the gas mask as described above, the hook 34 is inserted into the corresponding slot 36 in the intake unit 14 to attach the filter cartridge 12 to the intake unit 14, and the hook 34 has a hinge function. While the cartridge 12 is pivoted toward the intake unit 14 or axially pressed away from the intake unit 14, the cartridge can be easily detached from and combined with the intake unit 14. The operation is facilitated through the tab 38 provided on the 12, and the compression of the flange 22 and the expansion of the skirt 24 are brought into close contact with each other in a configuration that occurs substantially simultaneously.

However, the gas mask as described above has a structure in which the other side of the purification container 12 rotated about the hook 34 inserted into the slot 36 is supported by adhesion, so that interference with the outside is easily separated, thereby reducing its reliability. In addition, it is necessary to select a suitable material, as well as to require a precision for the production of the skirt and the protruding flange has a disadvantage that the workability is reduced.

An object of the present invention for improving the conventional problems as described above, it is possible to replace in the contaminated area, it is possible to quickly and securely combine the purification container, and to prevent the reverse rotation caused by external interference, etc. Of course, when the separation by the reverse rotation can prevent the degradation of the reliability due to poor airtightness, to provide a self-locking and releasing device of the gas mask purifier can be combined and separated without undue operation.

According to an aspect of the present invention, there is provided an apparatus for fixing a purifying tank to an intake unit of a gas mask for inhaling air, the apparatus comprising: a plurality of locking jaws protruding from one side of the purifying tank in a bent state; A hook configured to engage with the locking jaw and integrally provided in the intake unit, and coupled to the locking jaw in a locked state to integrally connect the purifying tank to the intake unit; The intake unit having the hook and the purging container having the locking jaw are respectively provided in a structure that can be mutually coupled to each other by the combination of the hook and the locking jaw, and is configured to be rotatable sliding in one direction to the intake unit Fasteners to allow one-way rotation of the connection to the connected to the container, the fastener for fixing the container to the set position of the intake unit by the locking operation by the structure capable of locking when the container is rotated in one direction is rotated to the set position; Here, the fastener is protruded, for example, on one side of the clarification container, the inclined surface is provided on one side so as to enable one-way rotation of the filtration vessel is rotated by the rotatively rotated by the filtration vessel, at least one having a vertical surface on the other side stopper; The lever unit is fixed to the intake unit in such a state as to be possible, and the lever unit flows by the pressing force while being pressed by the inclined surface of the stopper which is slidably rotated or by the user's external force. A lever-type fastener configured to lock or unlock the purifying container to the intake unit while preventing one side from being caught or caught by a vertical surface of the stopper while determining a fixed position of the purifying container; It may be configured to include; a fixing means for providing an elastic force to the fixture to fix the fixture to the intake unit in a state capable of lever-type flow. In this case, the fixing means is provided integrally with the fixture, for example, the intake A hinge fixed to the unit; A spring is fixed to the hinge to elastically support the fastener; preferably comprises a. The handle is a knob handle for providing a pressing surface on one side of the fastener, so that the external force of the user can be easily transmitted. The intake unit may further include a retraction prevention plate that is caught with the locking jaw that rotates in one direction together with the purification container, and restricts rotation of the cleaning container through the locking jaw. On the other hand, the intake unit, the intake assembly is composed of a member for selectively communicating or blocking the air communication to the site to which the purifier is coupled. Here, the intake assembly is, for example, the purified A support plate on which a plurality of flow holes communicating air are formed; A first sealing member integrally fixed to the support plate and made of a soft thin film material, the first sealing member sealing the flow hole in a state fixed to the support plate to seal the flow hole primarily; The first sealing member has a pressure bar that is elastically supported in a state in which the first sealing member is provided to be elastically supported, has a pressure bar that flows while being pressed by the purifying container, and is secondarily shielding the flow hole opened and closed by the first sealing member. On the other hand, the present invention is interposed between the purification vessel and the support plate for pressing the pressure bar of the second sealing member to seal the contact portion of the purification vessel and the support plate. An auxiliary sealing member; it is necessary to further comprise.

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As described above, according to the present invention, it is possible to prevent the inflow of contaminated air during the replacement of the purification vessel, so that it is possible to replace it in the contaminated area, and it is possible to quickly and firmly combine the purification vessel through one rotation (one-way rotation), and the rotation. If the fixed position is determined by, it is possible to prevent loosening due to reverse rotation during external interference to prevent the deterioration of reliability due to poor airtightness, and the fixed position is determined by one sliding. In particular, the purifying container can be easily separated by the operation of pressing the operation knob, and the fixing position can be determined through the stopper and the fixing means.

Figure 1 is a side view showing a gas mask combined state of the conventional purifier.

Figure 2 is a cross-sectional view showing a gas mask combined state of the purification container according to the present invention.

Figure 3a, b is a perspective view showing the coupling portion of the purifying container and gas mask according to the present invention, respectively.

Figure 4 is a flow chart illustrating a combined state of the purifying container according to the present invention.

* Description of the symbols for the main parts of the drawings *

300 gas mask 320 ...

340 Intake unit 361

381.Hook

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a cross-sectional view showing a gas mask coupled state of the purifier according to the present invention, Figure 3a, b is a perspective view showing the coupling portion of the purifier and gas mask according to the present invention, respectively, Figure 4 is a combination of the purifier according to the present invention Referring to FIG. 2, the self-locking and releasing device of the gas mask purifier according to the embodiment of the present invention is provided in the intake unit 340 of the gas mask 300 to intake air as shown. It is used to fix the septic tank 320. That is, the self-locking and releasing device of the gas mask purifying container according to the embodiment of the present invention is used to fix the purifying container 320 to the intake unit 340 fixed to the gas mask 300. This embodiment of the present invention is a plurality of engaging jaw (361) as shown; A hook 381 coupled to the locking jaw 361 in a locked state; The fastening jaw 361 is formed to protrude in a bent state on one side of the purification container 320 as shown. The locking jaw 361 is formed to protrude on the portion coupled to face the intake unit 340 as shown. That is, the locking jaw 361 is formed to protrude on the side of the fastening portion 320 of the purifying container 320. The hook 381 is integrally provided with the intake unit 340 in a state corresponding to the locking jaw 361 as shown. do. That is, the hook 381 is provided on the fastening portion side of the intake unit 340. At this time, the hook 381 is provided in the same body on the support plate 343 of the intake unit 340 as shown. The hook 381 has a structure capable of being caught by the locking jaw 361 as shown, and is coupled to the locking jaw 361 in a locked state to integrally connect the purifying container 320 to the intake unit 340. On the other hand, the purification tank 320 is fixed to the set position of the intake unit 340 by a fastener described later. Fasteners are respectively provided in a state capable of coupling to the intake unit 340 and the purifying tank 320. That is, the fasteners are provided in the intake unit 340 and the purifying tank 320, respectively, and have a structure that can be coupled to each other. In addition, the fasteners have a structure capable of locking while being capable of rotating sliding in one direction. Such a fastener is preferably configured to have a structure in which a member provided in the purification container 320 is rotatable, and a structure in which a member provided in the intake unit 340 can be locked. Here, the fastener is provided in the purification container 320. The member is a stopper (353) to be described later, the member provided in the intake unit 340 is a fastener 395 as shown and a fixing means for elastically fixing the fastener 395 to the intake unit 340 (to be described later) ). That is, the fastener includes a stopper 353; Fixture 395; It may be configured to include; fixing means. In this case, it is preferable that the stopper 353 be configured in plural. The stopper 353 and the fastener 395 are formed by the intake unit 340 and the purifying container 320 by the above-described locking step 361 and the hook 381. When connected, they are joined in a state facing each other. The stopper 353 and the fastener 395 allow the one-way rotation of the purification vessel 320 connected to the intake unit 340 due to the above-described structural characteristics. 340 has a function of fixing to a set position. That is, the purifier 320 is not only coupled to the intake unit 340 while being rotated in one direction by a fastener, and is also fixed to a designated position of the intake unit 340. On the other hand, the intake unit 340 is illustrated as shown in FIG. An air intake assembly 341 made of members for selectively communicating air or blocking communication is provided at a portion to which the 320 is coupled. That is, the intake unit 340 controls the air (intake) communicated by the intake assembly 341. Here, the intake assembly 341 described above is purified, for example, of the above-described purification tank 320 as shown. A support plate 343 having a plurality of flow holes 341a for communicating air; A thin film type which is integrally fixed to the support plate 343 and made of a soft thin film material, and primarily seals the flow hole 341a by shielding the flow hole 341a while being fixed to the support plate 343. of A first sealing member 341c; The first sealing member 341c has a pressure bar 341e, which is fixedly movable in an elastically supported state to the supporting plate 343 provided with the first sealing member 341c, and is pressurized by the purifying container 320, as shown. And a second sealing member 341d for secondary sealing while shielding the flow hole 341a opened and closed by the sealing member 341c. That is, the intake assembly 341 includes a support plate 343; A first sealing member 341c; And a second sealing member 341d. At this time, the second sealing member 341d is formed in a plate shape as shown, and is elastically supported by the support plate 343 by a spring SP mounted on the pressure bar 341e. That is, the second sealing member 341d is movably fixed to the support plate 343 by a spring SP. The first sealing member 341c of the intake assembly 341 is supported by the support plate 343 as shown. It is fixed to the center portion of the close contact with the flow hole (341a). That is, the first sealing member 341c seals the flow hole 341a in close contact with the flow hole 341a. As shown, the second sealing member 341d and the pressure bar 341e move while compressing the spring SP by the pressure of the purifying container 320, as shown in the drawing, with the first sealing member 341c. Spaced apart. That is, the second sealing member 341d is spaced apart from the first sealing member 341c when the purifying container 320 is fastened to the support plate 343 of the intake unit 340 as shown. Accordingly, the second sealing member 341d substantially opens the flow hole 341a of the support plate 343. However, the second sealing member 341d has a flow hole 341a of the support plate 343 in an overlapping state with the first sealing member 341c as described below when the purifying container 320 is removed from the intake unit 340. Substantially close. This will be described later. Meanwhile, in the exemplary embodiment of the present invention, the auxiliary sealing member 370 as shown may be provided. As shown in the figure, the auxiliary sealing member 370 is interposed between the support vessel 343 and the support plate 343 of the intake unit 340, which are coupled to each other to seal the contact portion between the support vessel 320 and the support plate 343. That is, the auxiliary sealing member 370 is an element that prevents the air intake from the purifying tank 320 to the intake unit 340 to flow out of the intake unit 340. The auxiliary sealing member 370 may be provided in the intake unit 340 as shown. In particular, the auxiliary sealing member 370 may be provided on the surface of the hook 381 provided in the intake unit 340. Referring to FIG. 3A, the locking jaw 361 is formed as one of the purifying tank 320 as shown. It is formed in the same body on the side to form a bent at a right angle. That is, the locking jaw 361 is formed to be bent at a right angle. The locking jaw 361 is configured as shown in the plurality to form a state facing each other on one side of the purification container 320. At this time, the locking jaw (361) is opposed to form a circle around the center of the purifying container 320 as shown. The stopper (353) of the fastener together with the locking jaw (361) as shown in the It is provided as one body on one side. The stopper 353 protrudes between the locking projections 361 as shown. That is, the stopper 353 is configured in plural as shown. The stopper 353 has an inclined surface 353a on one side as shown to enable one-way rotation of the purification vessel 320. In addition, the stopper 353 has a vertical surface 353b on the other side as shown to be able to engage with the fastener 395 to be described later. Meanwhile, the purifying container 320 is described above at an exhaust port through which air is exhausted, as shown. One auxiliary sealing member 370 may be provided. That is, the auxiliary sealing member 370 described above may be provided in the purifying container 320. The auxiliary sealing member 370 may be configured as a rubber gasket having a structure surrounding the exhaust port of the purifying container 320 as shown in enlargement. Referring to FIG. 3B, the hook 381 may have an intake unit 340 as shown. ) Is provided in the same body. The hook 381 is bent at a right angle to the intake unit 340 as shown to allow engagement with the above-described latching jaw 361 at a right angle. The hook 381 is formed on the surface as shown. The auxiliary sealing member 370 described above may be provided. The auxiliary sealing member 370 is preferably composed of an annular rubber ring as shown. On the other hand, the fastener 395 constituting the fastener described above is provided with an intake unit (as shown by fastening means described below). 340 is fixed in a state capable of lever-type flow. While the fastener 395 flows in a lever manner, one side of the fastener 395 is caught by the vertical surface 353b of the stopper 353 described above or the engagement with the vertical surface 353b is released. The fastener 395 locks (fixes) the purification container 320 to the intake unit 340 while preventing the reverse rotation of the purification container 320 when the vertical surface 353b is caught. Then, the fastener 395 unlocks (unlocks) the purifier 320 while the engagement with the vertical surface 353b is released. Therefore, in the purification container 320, the fixed position is determined as the fastener 395 is caught by the vertical surface 353b. This will be described later. Here, the aforementioned fixing means provides an elastic force to the fastener 395 to fix the fastener 395 to the intake unit 340 in a state capable of lever type flow. Such fixing means may include, for example, a hinge 390c which is integrally provided in the fixture 395 and fixed to the intake unit 340; It can be configured to include; a spring (390a) fixed to the hinge (390c) to elastically support the fixture (395). That is, the fixing means may include a hinge 390c and a spring 390a. At this time, it is preferable that the spring 390a uses a torsion spring to be wound on the hinge 390c protruding orthogonally to the fixture 395 as shown. Therefore, the fastener 395 is fixed to the intake unit 340 by the elastic force of the spring 390a in a state capable of lever type flow. Meanwhile, the fastener 395 is a knob-type handle (as shown at one end). 390b) may be provided. The handle 390b provides a planar pressing surface on one side of the fixture 395 as shown. Accordingly, the user can easily manipulate the fixture 395 by pressing the handle 390b. That is, the handle 390b is an element that easily transmits the external force of the user to the fixture 395. Of course, the fixture 395 is rotated about the hinge 390c by the user's external force transmitted through the handle 390b flows in a lever-like manner. On the other hand, the second sealing member 341d of the intake assembly 341d As shown in FIG. 2, when the septic tank is removed from the intake unit 340, the flow passage 341a of the support plate 343 substantially shields the overlapping state with the first sealing member 341c. That is, the plate-shaped second sealing member 341d closes the flow hole 341a while overlapping with the first sealing member 341c when the purifying container is removed from the intake unit 340. At this time, the pressure bar 341e of the intake assembly 341 returns to its original position by the elastic force of the spring SP as the pressing force is released while the purifying container is removed. Accordingly, the second sealing member 341d overlaps the first sealing member 341c as shown. Referring to FIG. 4, the intake unit 340 is coupled to the purifying container 320 as shown. At this time, the purification tank 320 is coupled to the intake unit 340 while being rotated in one direction as shown in (a) of the figure. That is, the purification container 320 is rotated in one direction as shown in (a) of the drawing, and then integrally coupled to the intake unit 340 as shown in (b) of the drawing. Meanwhile, the intake unit ( 340 may be provided with a retraction prevention plate 381a on the support plate 343 as shown. The retraction prevention plate 381a is an element that secures the hanging jaw 361 that rotates in one direction together with the purification container 320. That is, the locking jaw 361 is rotated and caught by the retraction prevention plate 381a. Therefore, the purifying container 320 is further limited in rotation as the locking step 361 is caught by the retraction prevention plate 381a. That is, the purification container 320 is rotated only by the angle set by the retraction prevention plate 381a.

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The operation of the present invention made of the above configuration will be described.

Referring to Figure 4, the intake unit 340 is coupled to the purifying tank 320 as shown. Purification container 320 is rotated to one side as shown in (a) of the press-in. At this time, the locking projection 361 provided in the purification container 320 is inserted into the lower portion of the hook 381 provided on the support plate 343 of the intake unit 340, as shown by the broken line (virtual dotted line) in the drawing. Accordingly, the locking jaw 361 is rotated by the purifying container 320 in a state of being caught by the hook 381. The locking jaw 361 is coupled to the hook 381 as shown in (b) of the drawing. Rotate in one direction in the state. The locking jaw 361 is caught by the retraction prevention plate 381a as shown by a broken line in (b). Therefore, the purification container 320 can no longer rotate. That is, in the purification container 320, the fixed position is determined as the locking step 361 is caught by the retraction prevention plate 381a.

On the other hand, when the engaging jaw 361 and the hook 381 is coupled, the stopper 353 having a predetermined inclination while being positioned in the same circumferential direction as the engaging jaw 361 is fastened as shown in (a) of the drawing. Pressing the fixture 395 while being in close contact with the 395. At this time, the stopper 353 is pressed as the inclined surface 353a is in close contact with the fixture 395 as shown. Of course, as the fastener 395 is pressed by the stopper 353, the lever 395 flows about the hinge 390c by the spring 390a. The stopper 353 is rotated by the purifying tank 320. That is, the stopper 353 slides in a circular shape while being rotated together with the purifying container 320. When the stopper 353 slides and the inclined surface 353a passes completely through the fixture 395, as shown in (b) of the drawing. Similarly, the vertical surface 353b (see FIG. 3A) is fixed to one side of the fixture 395. At this time, the fastener 395 is caught by the vertical surface 353b while being returned to its original position by the spring 390a. Accordingly, the stopper 353 may not rotate in the reverse direction as the vertical surface 353b is caught by the fastener 395. That is, the stopper 353 prevents the reverse rotation of the septic tank 320 through the vertical surface 353b and the fixture 395. Of course, the purification tank 320 is firmly fixed to the intake unit 340 as the reverse rotation is prevented.

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In addition, the fastener 395 has a spring 390a interposed therebetween as shown, and is connected as a hinge 390c, and the handle 390b is connected to one side thereof, so that the handle 390b can be press-fitted. If it is separated from the stopper 353 is separated. Accordingly, the purification container 320 may be separated from the intake unit 340 as the rotation is possible. Referring to FIG. 2, when the purification container 320 is mounted on the intake unit 340, one surface thereof is intake air. While pressing the pressure bar 341e provided in the unit 340, the second sealing member 341d closely attached to the support plate 343 is moved. Accordingly, the intake unit 340 can freely intake air. In addition, when the purifying container 320 is removed, the second sealing member 341d is in close contact with the support plate 343 while being restored by the elasticity of the spring. In addition, the first sealing member 341c closes the support plate 343 and prevents the air from being exhausted. Therefore, the first sealing member 341c prevents the exhaust gas from being discharged to the purifying container 320. Then, the auxiliary sealing member 370 of rubber material is prevented. In the combination of the purifying tank 320 and the intake unit 340, the sealing portion of the purifying tank 320 and the intake unit 340 is sealed to prevent contaminated air from flowing through the coupling portion.

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Embodiment of the present invention as described above, when rotating the purifying container 320 Since the fastening is positioned by the fasteners, a solid coupling is made, and there is no fear of separation of the purification container 320 by external interference, thereby improving the reliability of the coupling, and the second sealing member 341d when replacing the purification container 320 in the contaminated area. ) Seals the flow hole 341a to prevent the inflow of contaminated air.

Claims (6)

In the device for fixing the purifying tank 320 to the intake unit 340 of the gas mask 300 to intake air, A plurality of locking projections 361 protruding from one side of the purification container 320 in a bent state; The locking jaw 361 has a structure that is capable of locking and is integrally provided in the intake unit 340, and is coupled to the locking jaw 361 in a locked state to integrally purify the purifying container 320 to the intake unit 340. Hook 381 for connecting; And The intake unit 340 having the hook 381 and the purging container 320 having the locking jaw 361 are respectively provided in a structure capable of mutual coupling to the hook 381 and the locking jaw 361. Combined with each other, and made of a structure capable of rotationally sliding in one direction allows the one-way rotation of the purifying container 320 connected to the intake unit 340, and consists of a structure that can be locked, the purifying container 320 is rotated in one direction is set Self-locking and unlocking device of the gas mask cleaning container including a; fastener for fixing the purifying container 320 to the set position of the intake unit 340 by the locking operation by the structure capable of locking when rotated to the position. The method of claim 1, wherein the fastener, Protruding on one side of the purification vessel 320, the inclined surface (353a) is provided on one side so as to enable one-way rotation of the purification vessel 320 is rotatably sliding by the rotating container 320, the other side vertical surface (353b) At least one stopper 353 having a; The lever unit is fixed to the intake unit 340 in such a state as to be capable of being pressed, and while being pressed by the inclined surface 353a of the stopper 353 which is rotatable in rotation, the lever unit flows by pressing force or is pressed by an external force of the user. Or the lever type flow, and one side of the stopper 353 is locked to the vertical surface 353b of the stopper 353, or the locking is released to prevent the reverse rotation of the purification tank 320 to the intake unit 340 or A lever-type fastener 395 that unlocks to determine a fixed position of the purification container 320; And Self-locking and releasing device of the gas mask purifier including a; fixing means for providing an elastic force to the fastener (395) fixing the fastener (395) to the intake unit (340) in a state capable of lever-type flow. The method of claim 2, wherein the fixing means, A hinge 390c provided integrally with the fixture 395 and fixed to the intake unit 340; And And a spring (390a) fixed to the hinge (390c) to elastically support the fixture (395). The method of claim 2, Self-locking and unlocking device of the gas mask purifier further comprises a; knob handle (390b) for providing a pressing surface on one side of the fastener (395), so that the external force of the user is easily transmitted to the fastener (395). The method according to any one of claims 1 to 4, The intake unit 340, The catching jaw 361 is rotated in one direction together with the purifying container 320, the retraction prevention plate (381a) for limiting the rotation of the purifying container 320 through the locking jaw 361; Self-locking and unlocking device. The method of claim 1, wherein the intake unit 340, And an intake assembly 341 formed of members that selectively communicate air or block communication with a portion to which the purifying container 320 is coupled. The intake assembly 341 is A support plate 343 having a plurality of flow holes 341a communicating the purified air of the purifying container 320; The first fixedly fixed to the support plate 343, made of a soft thin film material, and sealing the flow hole (341a) in the state fixed to the support plate 343 to seal the flow hole (341a) first Sealing member 341c; And The first sealing member 341c has a pressure bar 341e which is fixedly movable in an elastically supported state on the supporting plate 343 provided with the first sealing member 341c and is pressurized by the purifying container 320, and has a first sealing member. And a second sealing member 341d for secondary sealing while shielding the flow hole 341a opened and closed by the 341c. An auxiliary sealing member interposed between the purification vessel 320 and the support plate 343 for pressing the pressure bar 341e of the second sealing member 341d to seal the contact portion of the purification vessel 320 and the support plate 343. Self-locking and releasing device of the gas mask purifier further comprises a (370).