CN210205637U

CN210205637U - Normally closed elastic quick-switching dust mask

Info

Publication number: CN210205637U
Application number: CN201920883396.7U
Authority: CN
Inventors: Siwei Chen; 陈思维; Simin Chen; 陈思敏; Shaonan Chen; 陈绍南; Ke Zhu; 朱科
Original assignee: Jingzhou Science And Technology Development Ltd
Current assignee: Jingzhou Science And Technology Development Ltd
Priority date: 2019-06-13
Filing date: 2019-06-13
Publication date: 2020-03-31
Anticipated expiration: 2029-06-13

Abstract

The utility model relates to a normal close formula elasticity quick switch dust mask belongs to labour protection protective articles technical field. The dust filter comprises a dust filter box body, a mask body, an exhalation valve and an inhalation valve, wherein the dust filter box body comprises a filter box shell, a filter box base and a filter element, and the mask body comprises a base, a silica gel mask and an elastic clamping plate. The middle part of the mask body is provided with a fixed clamping pin and two movable clamping pins, and the lower part of the elastic clamping plate is provided with an elastic sheet. The utility model adopts a fixed clamping pin and two movable clamping pins to clamp the dust filtering box body, can quickly convert the dust filtering box, saves time and labor, has good sealing effect and firm clamping; the dust filtering box body can be internally provided with a three-dimensional filter element or a plane filter element. The external bayonet socket of having solved current dust mask adopts threaded connection with worry the dirt box body, worry that the time that the dirt box body needs when changing is long, changes inconveniently, and worry the dirt box body and easily rotate on the face guard body, leads to the unsealed problem of kneck.

Description

Normally closed elastic quick-switching dust mask

Technical Field

The utility model relates to a normal close formula elasticity quick switch dust mask belongs to labour protection protective articles technical field.

Background

In life and work of people, a plurality of places or rescue places need to use the dustproof mask, and as the dustproof mask adopts different filter elements in different use places, such as a planar filter element or a three-dimensional filter element, the dustproof filter box needs to be converted or replaced along with the environmental change and the increase of wearing time of the use places; but the external bayonet socket on the face guard body of current dust mask and the connection of dustproof filter cartridge all adopt single-end or bull threaded connection, and dustproof filter cartridge not only needs the time long when changing or changing, and it is very inconvenient to change moreover, and dustproof filter cartridge easily rotates on the face guard body after the change, leads to the kneck sealed not good, and the user often mistakes when the field usage.

Disclosure of Invention

An object of the utility model is to the not enough of above-mentioned prior art, provide one kind through the fixed card foot on the face guard body and activity card foot fix external bayonet socket, can carry out the quick switch to the installation of considering the dirt box body or take off, and consider the three-dimensional filter core of mountable or planar filter core in the dirt box body, the dust guard of the quick switch of normal close formula elasticity that bayonet joint sealing performance is good.

The utility model discloses a realize above-mentioned purpose through following technical scheme:

the utility model provides a dust mask is changed fast to elasticity of normal close formula, it comprises considering dirt box body, face guard body, expiratory valve and inspiratory valve, and inspiratory valve and considering dirt box body are equipped with to the middle part of face guard body, and the expiratory valve, its characterized in that are equipped with to the lower part of face guard body:

the dust filtering box body is of an arc-shaped structure and comprises a filtering box shell, a filtering box base and a filter element, wherein one side of the filtering box shell is movably hinged with one side of the filtering box base, the other side of the filtering box shell is fastened with the other side of the filtering box base through a filtering box fastener, the filter element is arranged between the filtering box shell and the filtering box base, and the filter element is a three-dimensional filter element or a planar filter element; a circular clamping joint is manufactured on the outer side of the filter box base, and three concave bayonets are uniformly distributed on the circular clamping joint;

the mask body consists of a base, a silica gel mask and an elastic clamping plate, and the silica gel mask is fixedly connected with the opening edge of the base; an external bayonet is manufactured in the middle of the base, a fixing clamping foot is manufactured on the base at the upper part of the external bayonet, the cross section of the fixing clamping foot is of a T-shaped structure, and a sliding groove is manufactured on the mask body at the lower part of the external bayonet; a round hole matched with an external bayonet in the middle of the base is formed in the middle of the elastic clamping plate, a button is formed on the elastic clamping plate above the round hole, a T-shaped groove is formed in the button, two movable clamping pins are formed at the lower part in the round hole, the two movable clamping pins form an included angle of 120 degrees and are symmetrically distributed on the vertical center line of the round hole, and elastic pieces are formed at the lower part of the elastic clamping plate; the upper part of the elastic clamping plate is inserted on the fixed clamping foot of the base through the T-shaped groove on the button and can slide up and down, and the lower part of the elastic clamping plate is inserted in the sliding groove; the dust filtering box body is clamped and fixed on the mask body through three concave bayonets on a circular clamping joint on the filtering box base, and a fixed clamping foot on the base of the mask body and two movable clamping feet on the elastic clamping plate.

A sealing ring is arranged between the circular bayonet joint of the dust filtering box body and the external bayonet on the base of the mask body.

Compared with the prior art, the utility model beneficial effect lie in:

this elasticity quick transfer dust mask of normal close formula passes through a fixing clip foot on the base of face guard body and two activity card feet on the elasticity cardboard and carries out the joint to the circular joint of considering the dirt box body for dust mask can install dustproof filter cartridge fast in the use, and can change dustproof filter cartridge fast, labour saving and time saving, and is sealed effectual, and the joint is firm, and considers three-dimensional filter core of the internal mountable of dirt box or plane filter core. The connection of considering the dirt box body and face guard body that has solved current dust mask adopts threaded connection, and the time that dustproof filter cartridge not only needs when changing or changing is long, and it is very inconvenient to change moreover, considers the dirt box body after the change and easily rotates on the face guard body, leads to the sealed not good problem of kneck.

Drawings

FIG. 1 is a schematic perspective view of a normally closed elastic rapid-switching dust mask;

FIG. 2 is a schematic view of a dust filtering box of a normally closed elastic rapid-switching dust mask separated from a mask body;

FIG. 3 is a schematic view of a structure of a normally closed elastic rapid-switching dust mask with a three-dimensional filter element;

FIG. 4 is a schematic view of a normally closed elastic rapid-switching dust mask with a planar filter element;

FIG. 5 is a schematic front view of a mask body of a normally closed elastic rapid-switching dust mask;

fig. 6 is an exploded view of a normally closed elastic rapid-switching dust mask.

In the figure: 1. consider dirt box body, 101, consider a box fastener, 102, consider a box shell, 103, consider a box base, 104, circular joint, 105, concave bayonet, 106, three-dimensional filter core, 107, plane filter core, 2, face guard body, 21, base, 211, fixed card foot, 212, external bayonet, 213, spout, 22, silica gel face guard, 23, elasticity cardboard, 231, button, 232, activity card foot, 233, shell fragment, 234, round hole, 3, sealing washer, 4, expiratory valve, 5, the inspiratory valve.

Detailed Description

The normally closed elastic rapid-switching dustproof mask is composed of a dust filtering box body 1, a mask body 2, an exhalation valve 4 and an inhalation valve 5, wherein the inhalation valve 5 and the dust filtering box body 1 are installed in the middle of the mask body 2, and the exhalation valve 4 is installed at the lower part of the mask body 2. The dust filtering box body 1 is of an arc-shaped structure and comprises a filtering box shell 102, a filtering box base 103 and a filter element, wherein one side of the filtering box shell 102 is movably hinged with one side of the filtering box base 103, the other side of the filtering box shell 102 is buckled with the other side of the filtering box base 103 through a filtering box fastener 101, the filter element is arranged between the filtering box shell 102 and the filtering box base 103, and the filter element is a three-dimensional filter element 106 or a planar filter element 107; the outer side of the filter box base 103 is provided with a circular bayonet joint 104, and three concave bayonets 105 are uniformly distributed on the circular bayonet joint 104. The mask body 2 consists of a base 21, a silica gel mask 22 and an elastic clamping plate 23, wherein the silica gel mask 22 is fixedly connected with the opening edge of the base 21; an external bayonet 212 is manufactured in the middle of the base 21, a fixing clip leg 211 is manufactured on the base 21 above the external bayonet 212, the cross section of the fixing clip leg 211 is of a T-shaped structure, and a sliding groove 213 is manufactured on the mask body below the external bayonet 212; a round hole 234 matched with the external bayonet 212 at the middle part of the base 21 is formed in the middle part of the elastic clamping plate 23, a button 231 is formed on the elastic clamping plate 23 above the round hole 234, a T-shaped groove is formed in the button 231, two movable clamping pins 232 are formed at the lower part in the round hole 234, the two movable clamping pins 232 form an included angle of 120 degrees and are symmetrically distributed by the vertical center line of the round hole 234, and elastic pieces 233 are formed at the lower part of the elastic clamping plate 23; the upper part of the elastic clamping plate 23 is inserted on the fixed clamping leg 211 of the base 21 through the T-shaped groove on the button 231 and can slide up and down, and the lower part of the elastic clamping plate 23 is inserted in the sliding groove 213; the dust filtering box body 1 is clamped and fixed on the mask body 2 through three concave bayonets 105 on a circular bayonet joint 104 on a filtering box base 103, and a fixed bayonet leg 211 on a base 21 of the mask body 2 and two movable bayonet legs 232 on an elastic clamping plate 23. The sealing ring 3 is arranged between the circular bayonet joint 104 of the dust filtering box body 1 and the external bayonet 212 on the base 21 of the mask body 2.

When the normally closed elastic rapid-switching dustproof mask is used, a button 231 on a base 21 is pressed by one hand, the elastic clamping plate 23 slides downwards at the moment, an elastic sheet 233 at the lower part of the elastic clamping plate 23 is abutted against a mounting seat of an expiratory valve 4 at the lower part of the base 21, because the elastic sheet 233 is arc-shaped, the elastic sheet 233 contracts inwards after being pressed, two movable clamping feet 232 at the lower part of a round hole 234 at the middle part of the elastic clamping plate 23 move downwards simultaneously and move downwards to be as large as the diameter of an external bayonet 212 of the base 21, at the moment, a concave bayonet 105 at the upper part of a circular clamping joint 104 of a dust filtering box body 1 is inserted into a fixed clamping foot 211 of the base 21, the lower part of the dust filtering box body 1 is pushed and pressed, the circular clamping joint 104 of the dust filtering box body 1 enters the external bayonet 212 of the base 21 and compresses a sealing ring 3, then the button 231 on the base 21 is loosened, the elastic clamping plate 23 moves upwards under the elastic action of the two The base 21 and the dust filtering box body 1 can be connected and fixed in the shape bayonet 105. When the dust filtering box body 1 needs to be taken down, the lower part of the dust filtering box body 1 is tilted outwards by pressing the button 231 of the elastic clamping plate 23, and the dust filtering box body 1 can be taken down quickly.

The above description is only a preferred embodiment of the present invention, and the above illustration does not limit the essence of the present invention in any form, and any simple modification or variation of the above embodiments based on the technical essence of the present invention and equivalent embodiments which may be changed or modified to equivalent variations by using the technical essence of the present invention by those of ordinary skill in the art after reading the present description still belong to the technical solution of the present invention without departing from the essence and scope of the present invention.

Claims

1. The utility model provides a dust mask is changed fast to elasticity of normal close formula, it comprises considering dirt box body (1), face guard body (2), expiratory valve (4) and inspiratory valve (5), and inspiratory valve (5) and worry dirt box body (1) are equipped with in the middle part of face guard body (2), and expiratory valve (4), its characterized in that are equipped with to the lower part of face guard body (2):

the dust filtering box body (1) is of an arc structure and comprises a filtering box shell (102), a filtering box base (103) and a filter element, wherein one side of the filtering box shell (102) is movably hinged with one side of the filtering box base (103), the other side of the filtering box shell (102) is buckled with the other side of the filtering box base (103) through a filtering box fastener (101), the filter element is arranged between the filtering box shell (102) and the filtering box base (103), and the filter element is a three-dimensional filter element (106) or a planar filter element (107); a circular bayonet joint (104) is manufactured on the outer side of the filter box base (103), and three concave bayonets (105) are uniformly distributed on the circular bayonet joint (104);

the mask body (2) is composed of a base (21), a silica gel mask (22) and an elastic clamping plate (23), and the silica gel mask (22) is fixedly connected with the edge of an opening of the base (21); an external bayonet (212) is manufactured in the middle of the base (21), a fixed clamping pin (211) is manufactured on the base (21) at the upper part of the external bayonet (212), the cross section of the fixed clamping pin (211) is of a T-shaped structure, and a sliding groove (213) is manufactured on a mask body at the lower part of the external bayonet (212); a round hole (234) matched with an external bayonet (212) in the middle of the base (21) is formed in the middle of the elastic clamping plate (23), a button (231) is formed in the elastic clamping plate (23) above the round hole (234), a T-shaped groove is formed in the button (231), two movable clamping pins (232) are formed in the lower portion of the round hole (234), an included angle of 120 degrees is formed between the two movable clamping pins (232), the two movable clamping pins are symmetrically distributed with the vertical center line of the round hole (234), and an elastic sheet (233) is formed in the lower portion of the elastic clamping plate (23); the upper part of the elastic clamping plate (23) is inserted into a fixed clamping pin (211) of the base (21) through a T-shaped groove on the button (231) and can slide up and down, and the lower part of the elastic clamping plate (23) is inserted into the sliding groove (213); the dust filtering box body (1) is clamped and fixed on the mask body (2) through three concave bayonets (105) on a circular bayonet joint (104) on a box base (103), a fixed bayonet leg (211) on a base (21) of the mask body (2) and two movable bayonet legs (232) on an elastic clamping plate (23).

2. The normally closed elastic rapid-switching dust mask as set forth in claim 1, wherein: a sealing ring (3) is arranged between a circular bayonet joint (104) of the dust filtering box body (1) and an external bayonet (212) on a base (21) of the mask body (2).