CN212994615U - Breathing protection device's fixed knot constructs and breathing protection device - Google Patents

Abstract

The utility model provides a fixed knot of respiratory protection device constructs and respiratory protection device, wherein, respiratory protection device's fixed knot constructs, including the elastic webbing, the elastic webbing includes the middle part section and lies in two marginal sections of middle part section both sides respectively, two marginal sections are used for being connected with the both sides of respiratory protection main part of respiratory protection device respectively; the middle section has a hollowed-out portion for dividing the middle section into two branches to be able to wrap around different positions behind the head of the wearer. The utility model provides a respiratory protection device's fixed knot constructs and respiratory protection device not only can compromise convenience, stability, travelling comfort and the adaptation of wearing, can also be when not needing to wear respiratory protection device, hangs respiratory protection device on the neck temporarily conveniently.

Description

Breathing protection device's fixed knot constructs and breathing protection device

Technical Field

The utility model relates to a personal respiration protective articles for use technical field specifically relates to a fixed knot of respiratory protection device constructs and respiratory protection device.

Background

Currently, the fixing straps of the respiratory protection device are generally divided into a neck strap type, an ear strap type and a head strap type according to the structure. The head strap type fixing band comprises two mutually independent laces, one lace is used for wrapping the head, the other lace is used for wrapping the neck, and the head strap type fixing band has the advantages of being stable in fixing, good in sealing performance and inconvenient to wear and needs to be worn by two mutually independent laces by bypassing the head twice.

The ear-band type fixing band consists of two independent laces, and the two laces are used for being hung on two ears respectively.

The neck strap formula fixed band comprises two mutually independent frenulums, and two frenulums link together through buckle or couple in the neck rear to make two frenulums encircle the neck jointly, its advantage is fixed firm and do not influence wearing of cap and helmet, and the shortcoming is to wear inconveniently, needs overlap joint buckle or couple.

In addition, a single fixing band of the breathing protection device is arranged at present, the fixing band is formed by a wider lace which surrounds the head above the ears, the fixing band has the advantages that only one lace is convenient to wear, and the fixing band has the defects that the lace is easy to slip and is unstable on hair and the wider lace is stuffy.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least, provide a respiratory protection device's fixed knot structure and respiratory protection device, it not only can compromise convenience, stability, travelling comfort and the driving fit of wearing, can also be when not needing to wear respiratory protection device, hang respiratory protection device on the neck temporarily conveniently.

The fixing structure of the breathing protection device comprises an elastic belt, wherein the elastic belt comprises a middle section and two edge sections which are respectively positioned at two sides of the middle section, wherein the two edge sections are respectively connected with two sides of a breathing protection main body of the breathing protection device;

the middle section has a hollowed-out portion for dividing the middle section into two branches to be able to wrap around different positions behind the head of a wearer.

Preferably, each of the edge segments includes two sub-edge segments, one end of each of the two sub-edge segments is connected to the middle segment, and the other end of each of the two sub-edge segments is connected to the same side of the respiratory protection main body and is spaced apart from the same side.

Preferably, each edge section adopts an integrated structure; or each edge section comprises two sub-edge sections which are arranged side by side, and the two sub-edge sections are separably connected into an integral structure.

Preferably, two prefabricated hole groups are arranged on the elastic belt, each prefabricated hole group comprises at least one prefabricated hole, and the two prefabricated hole groups and the hollow part are arranged at intervals and are respectively close to the two edge sections relative to the hollow part.

Preferably, the middle section and the two edge sections respectively located at both sides of the middle section are integrally formed of the same material.

Preferably, the hollow portion includes a long hole in a strip shape, and a length direction of the long hole is the same as a length direction of the elastic band.

Preferably, under the unstressed state of the elastic band, the length of the long hole ranges from 100mm to 400 mm.

Preferably, under the unstressed state of the elastic band, the width of the long hole ranges from more than 0mm to less than or equal to 5 mm.

Preferably, in an unstressed state of the elastic band, the distance between each of two sides of the long hole in the width direction and each of two sides of the elastic band in the width direction ranges from 2mm to 15 mm.

Preferably, in an unstressed state of the elastic band, the distance between each of two ends of the long hole in the length direction and each of two ends of the elastic band in the length direction ranges from 5mm to 200 mm.

The utility model also provides a respiratory protection device, including respiratory protection main part with be used for with respiratory protection main part fixes the fixed knot who wears the person's face and constructs, fixed knot constructs and adopts if the utility model provides a fixed knot constructs.

The utility model also provides a respiratory protection device, including respiratory protection main part with be used for with respiratory protection main part fixes the fixed knot who wears the person's face and constructs, fixed knot constructs including an upper portion bandeau and a lower part bandeau, the upper portion bandeau adopts if the utility model provides a fixed knot constructs.

The utility model discloses following beneficial effect has:

the utility model provides a respiratory protection device's fixed knot constructs owing to pass through the fretwork part with an elastic webbing's middle part section and be two branches to can wrap at the different positions at the person's of wearing head rear, rather than wrap respectively at the different positions at the person's of wearing head rear through two independent fixed bands, consequently make the person of wearing only need with an elastic webbing cover to head rear can when wearing respiratory protection device, thereby taken into account the convenience of wearing, stability and driving fit. And because the elastic band is around the head rear of the person of wearing, rather than hanging on two ears like ear belt type fixed band, the ear pain that has avoided ear belt type fixed band to cause to and the phenomenon emergence of the easy slippage that takes place of ear belt type fixed band to the ear of relatively soft ear takes place, thereby has compromise stability and the travelling comfort of wearing. And when the wearer does not need to wear the respiratory protection device, the elastic band can be wound behind the neck, so that the respiratory protection device can be conveniently and temporarily hung on the neck. To sum up, can understand, the utility model provides a respiratory protection device's fixed knot constructs, its convenience, stability, travelling comfort and the driving fit that not only can compromise and wear, can also be when not needing to wear respiratory protection device, hang respiratory protection device on the neck temporarily conveniently.

The utility model provides a respiratory protection device, through adopting the utility model provides a fixed knot constructs, fixes respiratory protection main part in the face of wearing person, not only can compromise convenience, stability, travelling comfort and the driving fit of wearing, can also be when not needing to wear respiratory protection device, hang respiratory protection device on the neck temporarily conveniently.

The utility model provides a respiratory protection device, through adopting the upper portion bandeau the utility model provides a fixed knot constructs, fixes the respiratory protection main part in the face of wearing person with the cooperation of lower part bandeau, not only can compromise convenience, stability, travelling comfort and the driving fit of wearing, can also be when not needing to wear respiratory protection device, hang respiratory protection device on the neck temporarily conveniently.

Drawings

Fig. 1 is a schematic structural diagram of a fixing structure of a respiratory protection device according to an embodiment of the present invention;

fig. 2 is a schematic view of a respiratory protection device according to an embodiment of the present invention when worn;

fig. 3 is a schematic structural view of a fixing structure of another respiratory protection device according to an embodiment of the present invention;

fig. 4 is a schematic view of another respiratory protection apparatus provided by an embodiment of the present invention when worn;

fig. 5 is a schematic structural diagram of a fixing structure of another respiratory protection device according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a fixing structure of a respiratory protection device with a prefabricated hole according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a fixing structure of another respiratory protection device with a prefabricated hole according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a fixing structure of another respiratory protection device with a prefabricated hole according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a prefabricated elastic band for manufacturing a fixing structure of a respiratory protection device according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a prefabricated elastic band for manufacturing a fixing structure of a respiratory protection device according to an embodiment of the present invention;

fig. 11 is a schematic view of another respiratory protection apparatus according to an embodiment of the present invention when worn;

description of reference numerals:

1-an elastic band; 11-a middle section; 111-branch; 12-an edge segment; 121-a sub-edge segment; 13-a hollowed-out portion; 14-prefabricating holes; 2-a respiratory protection subject; 15-easy-tear line; 3-prefabricating an elastic belt; 4-lower headband.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following describes the fixing structure of the respiratory protection device and the respiratory protection device in detail with reference to the attached drawings.

As shown in fig. 1 to 8, the present embodiment provides a fixing structure of a respiratory protection device, which includes an elastic band 1, where the elastic band 1 includes a middle section 11 and two edge sections 12 respectively located at two sides of the middle section 11, where the two edge sections 12 are used to be respectively connected with two sides of a respiratory protection main body 2 of the respiratory protection device; the middle section 11 has a hollowed-out portion 13, the hollowed-out portion 13 being used to divide the middle section 11 into two branches 111 to be able to wrap around different positions behind the head of the wearer.

As shown in fig. 1 to 4, in the fixing structure of the respiratory protection device provided by this embodiment, the middle section 11 of one elastic band 1 is divided into two branches 111 through the hollow portion 13 so as to be wrapped at different positions behind the head of the wearer, instead of being wrapped at different positions behind the head of the wearer through two independent fixing bands, so that the wearer only needs to sleeve one elastic band 1 to the rear of the head when wearing the respiratory protection device, thereby taking convenience, stability and fit into consideration. And because the elastic band 1 is wrapped around the back of the head of the wearer, rather than being hung on two ears like the ear band type fixing band, the ear pain caused by the ear band type fixing band is avoided, and the phenomenon of easy slipping of the ear band type fixing band with soft ears is avoided, so that the wearing stability and comfort are considered. And when the wearer does not need to wear the respiratory protection device, the elastic band 1 can be wound on the back of the neck, so that the respiratory protection device can be conveniently and temporarily hung on the neck. To sum up, can understand the fixed knot who provides of this embodiment constructs, it not only can compromise convenience, stability, travelling comfort and the adaptation of wearing, can also be when not needing to wear respiratory protection device, hang respiratory protection device on the neck temporarily conveniently.

As shown in fig. 1-4, the fixing structure of the respiratory protection device provided by this embodiment can make the wearer only need to wind the elastic band 1 around the back of the head, separate the middle section 11 from the two branches 111 divided by the hollow portion 13, and place the two branches at different positions of the back of the head respectively, and then adjust the respiratory protection main body 2 to a position comfortable to fit with the face. And when the wearer need not wear the respiratory protection device, can all put the back at the neck with two branches 111 that middle part section 11 is divided into by fretwork portion 13 to make elastic webbing 1 wind the back at the neck, thereby can hang respiratory protection device on the neck temporarily conveniently.

Of course, the wearer can wear the respiratory protection device freely in the wearing manner that the wearer is accustomed to according to the wearing habit of the wearer, for example, when the wearer wears the respiratory protection device, the wearer can put the two branches 111 of the middle section 11 together and wrap the two branches 111 of the middle section 11 behind the head without separating the two branches 111, and then adjust the respiratory protection main body 2 to the position comfortable to fit with the face, so that the wearer of the respiratory protection device can also be realized.

As shown in fig. 2 and 4, the following description will be given taking the respiratory protection apparatus as a mask as an example, but the type of respiratory protection apparatus is not limited thereto, and may be an oxygen mask or the like, for example. When the respiratory protection device is a mask, the respiratory protection main body 2 is the mask main body, the mask main body is used for covering any one or both of the mouth and the nose of a wearer, two edge sections 12 of the elastic band 1 are respectively positioned at two sides of the middle section 11 and are respectively connected with two sides of the mask main body, and the middle section 11 and the two edge sections 12 are formed on the integrated elastic band 1. When the mask is worn, the middle section 11 wraps around the back of the head of a wearer, the two branches 111 of the middle section 11 are located at different positions behind the head, and the two edge sections 12 are located on two sides of the face of the wearer respectively.

Alternatively, when the elastic band 1 is not under stress, that is, when the elastic band 1 is not elastically deformed, the width of the elastic band 1 (as shown by the width a in fig. 9 and 10) may range from 6mm to 23 mm. However, the width of the elastic band 1 is not limited thereto.

Preferably, the width of the elastic band 1 may be 16mm in a state where the elastic band 1 is not stressed, i.e., when the elastic band 1 is not elastically deformed.

Alternatively, the elastic band 1 may comprise a knitted band, a braided band or a rubber band. However, the type of the elastic band 1 is not limited thereto.

Alternatively, the middle section 11 and the two edge sections 12 respectively located at both sides of the middle section 11 may be integrally formed of the same material. That is, the middle section 11 and the two edge sections 12 of the elastic band 1 are integrally formed of the same material, so that the elastic band 1 is of an integral structure. For example, the middle section 11 and both edge sections 12 may be the elastic band 1 formed of a knitted band as one body, or the middle section 11 and both edge sections 12 may be the elastic band 1 formed of a rubber band as one body.

Alternatively, the two edge sections 12 may be connected to both sides of the respiratory protection main body 2, that is, the elastic band 1 may be connected to the respiratory protection main body 2 by using a rivet connection, a nail connection or a welding process. When the protection main body is a breathing mask with heavy self weight, the elastic belt 1 and the breathing protection main body can be connected through a bayonet or a snap ring. However, the connection mode of the elastic band 1 and the respiratory protection main body 2 is not limited to this.

As shown in fig. 1 and 2, in a preferred embodiment of the present invention, each edge section 12 may include two sub-edge sections 121, one end of each of the two sub-edge sections 121 is connected to the middle section 11, and the other ends of the two sub-edge sections 121 are connected to the same side of the main body 2 and are spaced apart from each other on the same side.

Specifically, each side of the middle section 11 is connected with two sub-edge sections 121, and the two sub-edge sections 121 connected to the same side of the middle section 11 are connected to the end not connected to the middle section 11, so as to be connected to the same side of the respiratory protection main body 2, and the two sub-edge sections 121 connected to the same side of the respiratory protection main body 2 are connected to the side of the respiratory protection main body 2 at intervals. Can make elastic webbing 1 and respiratory protection main part 2 every side all have two tie points like this, and elastic webbing 1 and respiratory protection main part 2 with two tie points of one side, at respiratory protection main part 2 this side mutual interval distribution to improve the stability that elastic webbing 1 and respiratory protection main part 2 are connected, thereby further improve respiratory protection device's fixed knot structure's stability.

Alternatively, as shown in fig. 10, in making an elastic band 1 of unitary construction with each edge segment 12 comprising two sub-edge segments 121, a plurality of hollowed-out portions 13 may be provided at intervals on a long preformed elastic band 3, by cutting off every other hollowed-out portion 13 along the width direction of the preformed elastic band 3 (as indicated by the dashed line N in the hollowed-out portion 13 of every other hollowed-out portion 13 in fig. 10), so as to divide the long prefabricated elastic band 3 into a plurality of elastic bands 1, the separated uncut hollowed-out parts 13 are used as the hollowed-out parts 13 on each elastic band 1, the cut hollowed-out parts 13 and the solid parts of the prefabricated elastic bands 3 on the two sides are used as the edge sections 12 comprising two sub-edge sections 121 on each elastic band 1, so that each elastic band 1 is an elastic band 1 with an edge section 12 comprising two sub-edge sections 121.

In a preferred embodiment of the present invention, as shown in fig. 2, each edge section 12 may be of an integral structure; alternatively, as shown in FIG. 5, each edge segment 12 may include two sub-edge segments 121 disposed side-by-side, with the two sub-edge segments 121 being detachably connected as a unitary structure.

As shown in fig. 2 and 3, specifically, each edge segment 12 adopts an integral structure, that is, each edge segment 12 is a whole, each side of the elastic band 1 and the respiratory protection main body 2 is connected through one edge segment 12, and each side of the elastic band 1 and the respiratory protection main body 2 is only provided with one connection point, so that the connection between the elastic band 1 and the respiratory protection main body 2 is simpler, the connection process between the elastic band 1 and the respiratory protection main body 2 is optimized, and the wearing convenience of the fixed structure of the respiratory protection device is improved.

Alternatively, as shown in fig. 9, in manufacturing the elastic band 1 of the one-piece structure in which each edge section 12 is of the one-piece structure, a plurality of hollowed-out portions 13 may be provided at intervals on a long preformed elastic band 3, and by cutting off the solid part of the preformed elastic band 3 between each two adjacent hollowed-out portions 13 (as shown by the dotted line M between two adjacent hollowed-out portions 13 in fig. 9, fig. 9 shows only a part of the preformed elastic band, and may extend to both sides along the length direction of the elastic band), so as to divide the long prefabricated elastic band 3 into a plurality of elastic bands 1, each elastic band 1 is provided with a hollow-out part 13, the solid parts of the prefabricated elastic band 3 at the two sides of the hollow-out part 13 can be used as each edge section 12 of the integrated structure of the elastic band 1, so that each elastic belt 1 is an elastic belt 1 with an integrated structure at each edge section 12.

Through the two methods, when the elastic band 1 with the integrated structure of which each edge section 12 comprises two sub-edge sections 121 is manufactured respectively, or the elastic band 1 with the integrated structure of which each edge section 12 adopts the integrated structure is manufactured, on one hand, the prefabricated elastic bands 3 of the elastic bands 1 with the integrated structures of two different structures are manufactured to be the same in structure, and the materials of the prefabricated elastic bands 3 are the same, so that the prefabricated elastic bands 3 can be formed through continuous processing, the prefabricated elastic bands 3 can be conveniently and orderly wound and unwound and packaged, on the other hand, when the elastic bands 1 with the integrated structures of two different structures are manufactured, the elastic bands 1 with the integrated structures of two different structures can be formed only by automatically cutting the prefabricated elastic bands 3 with the same structure at different specified positions according to requirements, so that the elastic bands 1 with the integrated structures can be flexibly adjusted according to requirements, thereby make respiratory protection device's fixed knot structure and respiratory protection device's automated production efficiency obtain improving, and then make the elastic webbing 1 of the integral type structure that this embodiment provided not only can compromise the convenience of wearing, stability, travelling comfort and adaptation, can be when not needing to wear respiratory protection device, hang respiratory protection device on the neck temporarily conveniently, but also it is very friendly to respiratory protection device's fixed knot structure and respiratory protection device's manufacturing, can make respiratory protection device's fixed knot structure and respiratory protection device's manufacturing convenient easy operation.

As shown in fig. 5, each edge segment 12 includes two sub-edge segments 121 arranged side by side, and each sub-edge segment 121 is detachably connected to form an integral structure, that is, each edge segment 12 includes two sub-edge segments 121 arranged side by side, and the two sub-edge segments 121 can be connected to form an integral structure, that is, the two sub-edge segments 121 can be connected together to form an integral body, or the two sub-edge segments 121 connected together can be separated to form two separate sub-edge segments 121 by tearing or cutting, for example. Thus, when the two sub-edge sections 121 are connected to form an integral structure, each side of the elastic band 1 and the respiratory protection main body 2 may have only one connection point (as shown in fig. 4) so as to make the connection between the elastic band 1 and the respiratory protection main body 2 simpler, and when the two sub-edge sections 121 are separated to form two separated sub-edge sections 121, each side of the elastic band 1 and the respiratory protection main body 2 has two connection points, and the two connection points are distributed at intervals (as shown in fig. 2) on the side of the respiratory protection main body 2 so as to improve the stability of the connection between the elastic band 1 and the respiratory protection main body 2. The design mode can lead the connection mode of the elastic belt 1 and the breathing protection main body 2 to be more flexible, thereby improving the use flexibility of the fixed structure of the breathing protection device.

As shown in fig. 5, optionally, an easy-to-tear line 15 may be disposed on each edge segment 12, the easy-to-tear line 15 is located between two sub-edge segments 121 of each edge segment 12, and the two sub-edge segments 121 are respectively located at two sides of the easy-to-tear line 15, so that the two sub-edge segments 121 of each edge segment 12 are detachably connected to form an integral structure through the easy-to-tear line 15, and each edge segment 12 may include two sub-edge segments 121 disposed side by side, and the two sub-edge segments 121 are detachably connected to form an integral structure. The separation of the two sub-edge segments 121 connected together according to the easy tear line 15 may be facilitated by the easy tear line 15 to avoid damaging the two sub-edge segments 121 when separating the two sub-edge segments 121.

As shown in fig. 6-8, in a preferred embodiment of the present invention, two preformed hole sets may be disposed on the elastic band 1, each preformed hole set includes at least one preformed hole 14, and the two preformed hole sets are respectively disposed at two sides of the hollow portion 13.

As shown in fig. 6-8, the elastic belt 1 is provided with two preformed holes 14, each preformed hole 14 includes two preformed holes 14, and the two preformed holes 14 are respectively located at two sides of the hollow portion 13. However, the number of preformed holes 14 in each preformed hole group is not limited to this, and each preformed hole group may include two preformed holes 14 or more preformed holes 14, that is, each preformed hole group includes at least one preformed hole 14, that is, both sides of the hollow portion 13 are respectively provided with at least one preformed hole 14.

With the preformed hole 14, the wearer can tear or cut the preformed hole 14 according to, for example, the size of his head by, for example, tearing or cutting, so that the preformed hole 14 communicates with the hollow portion 13, and the length of the two branches 111 of the middle section 11 is increased, so that the wearer can separate the two branches 111 of the middle section 11 by a larger angle, so that the elastic band 1 can be adapted to the heads of wearers with different sizes. The wearer can tear or cut the prefabricated hole 14 by tearing or cutting or the like according to the wearing habit of the wearer, for example, the prefabricated hole 14 is communicated with the hollow part 13, the length of the two branches 111 of the middle section 11 is increased, the angle for separating the two branches 111 of the middle section 11 is larger, so that the wearer can wrap one branch 111 of the two branches 111 from the upper part of the ear to the back of the head and wrap the other branch 111 from the lower part of the ear to the back of the head, and the adaptability and the use flexibility of the fixing structure of the respiratory protection device are improved.

And, when each of said edge segments 12 comprises two sub-edge segments 121, and the two sub-edge segments 121 are connected to the same side of the mask body in spaced relation to each other. With the preformed hole 14, the wearer can tear or cut the preformed hole 14 according to, for example, the size of his head by, for example, tearing or cutting, so that the preformed hole 14 communicates with the two sub-edge segments 121, and the length of the two sub-edge segments 121 is increased, so that the two sub-edge segments 121 can be separated by a larger angle, so that the elastic band 1 can be adapted to the heads of wearers with different sizes. This also improves the adaptability and flexibility of use of the fixed structure of the respiratory protection device.

Moreover, the prefabricated holes 14 are formed in the elastic band 1, so that the function of ventilation can be achieved through the prefabricated holes 14, the stuffiness of the elastic band 1 is reduced, and the wearing comfort of the fixed structure of the respiratory protection device is improved.

As shown in fig. 1, 3 and 5-8, in a preferred embodiment of the present invention, the hollow portion 13 may include a strip-shaped long hole, and the length direction of the long hole is the same as the length direction of the elastic band 1. This can make the middle section 11 divide into two branches 111 along the width direction of elastic band 1, and when the respiratory protection device was worn to the wearer, two branches 111 of middle section 11 were located the different upper and lower positions of the back of the wearer's head respectively along the upper and lower direction of wearer's head.

Optionally, when the elastic band 1 is not under stress, that is, when the elastic band 1 is not elastically deformed or is not worn, the length of the long hole (as shown by the length B in fig. 9 and 10) may range from 100mm to 400 mm. However, the length of the long hole is not limited to this.

Preferably, the length of the long hole may be 200mm to 250mm in a state where the elastic band 1 is not stressed, that is, when the elastic band 1 is not elastically deformed.

Optionally, when the elastic band 1 is not under stress, that is, when the elastic band 1 is not elastically deformed, the width of the long hole (as shown by the width C in fig. 9 and 10) may be greater than 0mm and less than or equal to 5 mm. However, the width of the long hole is not limited to this.

Preferably, the width of the long hole may be 1mm in a state where the elastic band 1 is not subjected to force, that is, when the elastic band 1 is not elastically deformed.

In a preferred embodiment of the present invention, the hollow portion 13 is located in the middle of the elastic band 1 in the width direction of the elastic band 1, so that the two branches 111 of the middle section 11 are stressed uniformly, thereby improving the wearing stability of the fixed structure of the respiratory protection device.

Alternatively, when the elastic band 1 is not under stress, that is, when the elastic band 1 is not elastically deformed, the distance between the two sides of the long hole in the width direction and the two sides of the elastic band 1 in the width direction (as shown by the distance D in fig. 9 and 10) may be 2mm to 15 mm. However, the distance between both sides of the elongated hole in the width direction and both sides of the elastic band 1 in the width direction is not limited to this. The distance between both sides of the long hole in the width direction and both sides of the elastic band 1 in the width direction may be the same or different.

Preferably, in a state where the elastic band 1 is not subjected to force, that is, when the elastic band 1 is not elastically deformed, the distance between both sides in the width direction of the long hole and both sides in the width direction of the elastic band 1 may be 7mm to 8mm, respectively.

In a preferred embodiment of the present invention, the hollow portion 13 is located in the middle of the elastic band 1 in the length direction of the elastic band 1, so that the two branches 111 of the middle section 11 are stressed uniformly, thereby improving the wearing stability of the fixed structure of the respiratory protection device.

Alternatively, when the elastic band 1 is not under stress, that is, when the elastic band 1 is not elastically deformed, the distance between the two ends of the long hole in the length direction and the two ends of the elastic band 1 in the length direction (as shown by the distance E in fig. 9 and the distance E' in fig. 10) may be 5mm to 200 mm. However, the distance between both ends of the elongated hole in the longitudinal direction and both ends of the elastic band 1 in the longitudinal direction is not limited to this. The distance between the two ends of the long hole in the longitudinal direction and the two ends of the elastic band 1 in the longitudinal direction may be the same or different.

Preferably, in a state where the elastic band 1 is not subjected to a force, that is, when the elastic band 1 is not elastically deformed, the distance between both ends in the longitudinal direction of the long hole and both ends in the longitudinal direction of the elastic band 1 may be 40mm to 60mm, respectively.

In order to detect the adhesion of the respiratory protection device adopting the fixed structure provided by the embodiment, the Total Leakage rate (TIL) of the respiratory protection device adopting the fixed structure provided by the embodiment is tested according to the testing method specified in the national standard GB 2626. The total leak rate represents the ratio of the concentration of the simulant leaking into the main body 2 of the respiratory protection body 2 from all parts of the main body 2 including the filter element to the concentration of the simulant in the air of the environment in which the subject is located when the subject inhales, expressed as a percentage, the lower the ratio the better the adherence of the respiratory protection device.

The specific test method for the total leak rate of the respiratory protection device is as follows: firstly, a testee (if the testee is a male, the beard needs to be scraped clean) wears the respiratory protection device in clean air to breathe normally, gas in the respiratory protection main body 2 is collected by a sampling pipe, the particulate matter concentration of the respiratory protection main body is detected for 5 times, and the average value is used as the background concentration.

Then, the testee enters the detection bin to stand, the detection bin is provided with an air inlet and an air outlet, and is provided with detection pipes which are respectively communicated with the interior of the detection bin and the interior of the respiratory protection main body 2.

After that, the subject performs the following five actions in order: the first action is that the head is still and does not speak for 2 minutes, the second action is that the head is rotated left and right to look at the left side wall and the right side wall of the detection chamber for about 15 times and 2 minutes, the third action is that the head is lowered and raised to look at the top wall and the bottom wall of the detection chamber for about 15 times and 2 minutes, the fourth action is that the head speaks loudly for 2 minutes, and the fifth action is that the head is still and does not speak for 2 minutes. In the test, the gas inlet is used for introducing the gas containing (1 +/-0.2) mg/m into the detection bin at the flow rate of not less than 100L/min³Sodium chloride (NaCl) particle simulator with concentration, and ensures that the variation amplitude of the concentration of the particulate matters in the detection bin is not more than 10%.

When each action is carried out, the concentrations of the particulate matters in the gas in the detection bin and the gas in the respiratory protection main body 2 are respectively collected through the sampling pipe, 5 times of detection are carried out during each action, and the average value is respectively used as the external concentration of the respiratory protection device and the internal concentration of the respiratory protection device of the action.

Finally, the total leak rate for each action is calculated according to the following formula: the total leak rate for an action is (inner concentration-background concentration of the respiratory protection device for that action) × 1.7 ÷ outer concentration of the respiratory protection device for that action × 100%.

The total leak rate per action was recorded for each subject, with lower total leak rates indicating better adherence of the respiratory protection device. The total leak rate is indicated by the symbol "+" in the total leak rate table, and it is generally considered that the less the ten subjects perform five actions, respectively, and the total leak rate exceeds 11%, or the less the total leak rate does not exceed 11%, the better the sealing performance of the respiratory protection device.

Calculating the average value of the total leakage rate of the five actions of each tested person, wherein the calculation method comprises the following steps: the average value of the total leak rate is (total leak rate in the first operation + total leak rate in the second operation + total leak rate in the third operation + total leak rate in the fourth operation + total leak rate in the fifth operation) ÷ 5. A lower average value of the total leak rate indicates a better fit of the respiratory protection device. The symbol ^ indicates the value of the average value of the total leakage rate exceeding 8% in the average value table of the total leakage rate, and generally, the average value of the total leakage rate is lower than 8%, so that the tightness of the respiratory protection device is good.

As shown in table 1, the total leak rate requirement of the disposable face mask in the respiratory protection self-priming filtering type particulate-proof respirator is taken as an example in the chinese national standard GB 2626-2019.

Table 1:

as shown in table 1, when the filter material grade of the filter element in the main body 2 of the respiratory protection device is KN90 or KP90, the total leakage rate of at least forty-six actions out of fifty actions needs to satisfy less than 13% based on the total leakage rate of each action, and the average value of the total leakage rate of at least eight people out of ten subjects needs to satisfy less than 10% based on the average value of the total leakage rate of each person, so that the requirement of the national standard for the sealing property of the respiratory protection device using the filter material grade can be satisfied. When the grade of the filter material of the filter element in the main body 2 of the respiratory protection device is KN95 or KP95, the total leakage rate of at least forty-six actions in fifty actions needs to be less than 11% on the basis of the total leakage rate of each action, and the average value of the total leakage rate of at least eight people in ten testees needs to be less than 8% on the basis of the average value of the total leakage rate of each person, so that the requirement of the national standard on the sealing property of the respiratory protection device adopting the grade of the filter material can be met. When the grade of the filter material of the filter element in the main body 2 of the respiratory protection device is KN100 or KP100, and the total leakage rate of each action is used as an evaluation basis, the total leakage rate of at least forty-six actions in the fifty actions needs to be less than 5%, and the average value of the total leakage rate of each person is used as an evaluation basis, the average value of the total leakage rate of at least eight people in the ten testees needs to be less than 2%, so that the sealing requirement of the national standard on the respiratory protection device adopting the grade of the filter material can be met.

Three test tables are listed below, in which the total leak rate test of five actions is performed on ten subjects wearing the respiratory protection device of the fixed structure provided in this embodiment, and the total leak rate of each action and the average value of the total leak rate are measured for each subject, respectively, according to the above-described total leak rate test method. Wherein, the fixed knot that respiratory protection device that table 2 shows adopted constructs for elastic webbing 1 includes middle part section 11 and is located respectively two marginal sections 12 of middle part section 11 both sides, middle part section 11 is divided into two branches 111 by fretwork portion 13, and each marginal section 12 all includes the fixed knot structure of two sub-marginal sections 121, and the person under test puts the different positions in head rear respectively with two branches 111 of middle part section 11 when wearing respiratory protection device.

The fixed knot that the respiratory protection device that table 3 shows adopted constructs for elastic webbing 1 includes middle part section 11 and is located respectively two marginal sections 12 of middle part section 11 both sides, middle part section 11 is divided into two branches 111 by fretwork portion 13, and each marginal section 12 all includes the fixed knot structure of two sub-marginal sections 121, and the person under test puts two branches 111 of middle part section 11 together and wraps to the head rear when wearing respiratory protection device.

The fixed knot that respiratory protection device that table 4 represented adopted constructs for elastic webbing 1 includes middle part section 11 and is located respectively two marginal sections 12 of middle part section 11 both sides, middle part section 11 is divided into two branches 111 by fretwork portion 13, and each marginal section 12 all adopts the integral type structure, and the person under test puts the different positions at the head rear respectively with two branches 111 of middle part section 11 when wearing respiratory protection device.

Total leakage rate test result table

Table 2:

table 3:

table 4:

as shown in table 2, when ten subjects wear the respiratory protection device with the fixed structure provided in this embodiment, the total leak rates of the fifty movements of the ten subjects are all less than 11%, and the average value of the total leak rates of the ten subjects is less than 8%, which indicates that the respiratory protection device with the fixed structure provided in this embodiment, as shown in table 2, has good adhesion in the test method specified in the chinese national standard GB 2626.

In addition, the total leakage rate of forty-six actions of fifty testees is less than 5%, and the average value of the total leakage rate of eight testees of ten testees is less than 2%, and it can be seen from table 1 that the respiratory protection device with the fixed structure provided by the embodiment can meet the requirement of the national standard on the sealing performance of the respiratory protection device with the filter material grades of KN90 or KP90, KN95 or KP95 and KN100 or KP 100.

As shown in table 3, when ten subjects wear the respiratory protection device using the fixed structure provided in this embodiment, the total leak rate of forty-nine actions of the ten subjects is less than 11%, the total leak rate of only one action is greater than 11%, and the average value of the total leak rate of the ten subjects is less than 8%, which indicates that the respiratory protection device using the fixed structure provided in this embodiment shown in table 3 has good adhesion in the test method specified in the chinese national standard GB 2626.

In addition, the total leakage rate of forty-nine of the fifty actions of the ten testees is less than 11%, and the average value of the total leakage rate of the ten testees is less than 8%, and it can be seen from table 1 that the respiratory protection device with the fixed structure provided by the embodiment can meet the requirement of the national standard on the sealing performance of the respiratory protection device with the filter material grades of KN90 or KP90 and KN95 or KP 95.

As shown in table 4, when ten subjects wear the respiratory protection device using the fixed structure provided in this embodiment, the total leak rates of fifty movements of the ten subjects were all less than 11%, and the average value of the total leak rates of the ten subjects was less than 8%, which indicates that the respiratory protection device using the fixed structure provided in this embodiment listed in table 4 has good adhesion in the test method specified in the chinese national standard GB 2626.

In addition, the total leakage rate of forty-six actions of fifty testees is less than 5%, and the average value of the total leakage rate of nine testees is less than 2%, as can be seen from table 1, the respiratory protection device with the fixed structure provided by the embodiment can meet the requirement of the national standard on the sealing performance of the respiratory protection device with the filter material grades of KN90 or KP90, KN95 or KP95 and KN100 or KP 100.

As another technical solution, the present embodiment further provides a respiratory protection device, which includes a respiratory protection main body 2 and a fixing structure for fixing the respiratory protection main body 2 on the face of a wearer, wherein the fixing structure is the fixing structure provided in the present embodiment.

The respiratory protection device that this embodiment provided, through the fixed knot who adopts the embodiment constructs, fixes respiratory protection main part 2 in the face of wearing person, not only can compromise convenience, stability of wearing, with travelling comfort and adaptation, can also be when not needing to wear respiratory protection device, hang respiratory protection device on the neck temporarily conveniently.

In yet another aspect, as shown in fig. 11, the present embodiment further provides a respiratory protection device, which includes a respiratory protection main body and a fixing structure for fixing the respiratory protection main body on the face of a wearer, wherein the fixing structure includes an upper headband and a lower headband 4, and the upper headband adopts the fixing structure provided in the present embodiment.

The respiratory protection device that this embodiment provided, through adopting the upper portion bandeau the utility model provides a fixed knot constructs, fixes the respiratory protection main part in the person's of wearing face with 4 cooperations of lower part bandeau, not only can compromise convenience, stability, travelling comfort and the adaptation of wearing, can also be when not needing to wear respiratory protection device, hang respiratory protection device on the neck temporarily conveniently.

To sum up, the respiratory protection device's that this embodiment provided fixed knot constructs and respiratory protection device not only can compromise convenience, stability, travelling comfort and the adaptation of wearing, can also be when not needing to wear respiratory protection device, hang respiratory protection device on the neck temporarily conveniently.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims (12)

1. A fixing structure of a respiratory protection device comprises an elastic belt, and is characterized in that the elastic belt comprises a middle section and two edge sections which are respectively positioned at two sides of the middle section, wherein the two edge sections are respectively connected with two sides of a respiratory protection main body of the respiratory protection device;

the middle section has a hollowed-out portion for dividing the middle section into two branches to be able to wrap around different positions behind the head of a wearer.

2. A mounting structure for a respiratory protection device according to claim 1 wherein each of the edge segments comprises two sub-edge segments, one end of each of the two sub-edge segments is connected to the middle segment, and the other ends of each of the two sub-edge segments are connected to the same side of the respiratory protection body and spaced apart from each other on the same side.

3. A mounting structure for a respiratory protection device according to claim 1 wherein each edge segment is of unitary construction; or each edge section comprises two sub-edge sections which are arranged side by side, and the two sub-edge sections are separably connected into an integral structure.

4. A fixed structure of a respiratory protection device according to any one of claims 1 to 3, wherein the elastic belt is provided with two preformed hole groups, each preformed hole group comprises at least one preformed hole, and the two preformed hole groups are arranged at intervals with the hollowed-out part and are respectively close to the two edge sections relative to the hollowed-out part.

5. A fixing structure of a respiratory protection device according to any one of the claims 1 to 3, characterized in that the middle section and the two edge sections respectively located at both sides of the middle section are formed in one piece from the same material.

6. The respiratory protection device fixing structure according to claim 1, wherein the hollow portion comprises a long hole in a strip shape, and the length direction of the long hole is the same as the length direction of the elastic belt.

7. A fixing structure of a respiratory protection device according to claim 6, wherein the length of the long hole ranges from 100mm to 400mm in the unstressed state of the elastic band.

8. A fixing structure of a respiratory protection device according to claim 6, wherein the width of the long hole ranges from more than 0mm to less than or equal to 5mm in the unstressed state of the elastic band.

9. The fixing structure of the respiratory protection device according to claim 6, wherein the distance between the two sides of the long hole in the width direction and the two sides of the elastic belt in the width direction is 2mm-15mm in the unstressed state of the elastic belt.

10. The respiratory protection device fixing structure according to claim 6, wherein, in the unstressed state of the elastic band, the distance between the two ends of the long hole in the length direction and the two ends of the elastic band in the length direction respectively ranges from 5mm to 200 mm.

11. A respiratory protection device comprising a respiratory protection body and a fixing structure for fixing the respiratory protection body on the face of a wearer, wherein the fixing structure adopts a fixing structure as claimed in any one of claims 1 to 10.

12. A respiratory protection device comprising a respiratory protection body and a securing structure for securing the respiratory protection body to a wearer's face, wherein the securing structure comprises an upper headband and a lower headband, the upper headband being in accordance with the securing structure of any one of claims 1 to 10.

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