CN212038651U - Inflatable conjoined positive pressure head cover - Google Patents
Inflatable conjoined positive pressure head cover Download PDFInfo
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- CN212038651U CN212038651U CN202020438270.1U CN202020438270U CN212038651U CN 212038651 U CN212038651 U CN 212038651U CN 202020438270 U CN202020438270 U CN 202020438270U CN 212038651 U CN212038651 U CN 212038651U
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- connector
- hood
- inflatable
- positive pressure
- air
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- 238000001914 filtration Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 description 18
- 230000029058 respiratory gaseous exchange Effects 0.000 description 4
- 239000000945 filler Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 210000000707 wrist Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses an inflatable disjunctor malleation hood, including hood body and air feed module, the hood body is used for wearing at human head, and the hood body is equipped with first connector, and the air feed module is equipped with the second connector, and sealing connection can be dismantled with first connector to the second connector. The utility model discloses technical scheme has changed the structure of inflatable disjunctor malleation hood, makes it can reuse, reduces extravagantly.
Description
Technical Field
The utility model relates to the technical field of medical supplies, in particular to inflatable disjunctor malleation hood.
Background
The positive pressure hood is a breathing and contact protective article which isolates a human body from a polluted environment and provides purified flowing air for the inside, and is an important protective article for first-line rescue personnel. In the related art, the positive pressure hood usually includes the hood body and is connected with the hood body and for it provides the air feed module of mobile air, as long as one of hood body and air feed module is damaged, the positive pressure hood can't use promptly, leads to the positive pressure hood to be difficult to reuse, causes the waste.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing an inflatable disjunctor malleation hood, aims at improving its structure, makes it can reuse, reduces extravagantly.
In order to achieve the above object, the utility model provides an inflatable disjunctor malleation hood, include: the head cover comprises a head cover body and a connecting piece, wherein the head cover body is worn on the head of a human body and is provided with a first connecting head; and the air supply module is provided with a second connector, and the second connector is detachably and hermetically connected with the first connector.
In one embodiment, one of the first connector and the second connector is provided with an internal thread, and the other of the first connector and the second connector is provided with an external thread matched with the internal thread.
In one embodiment, the internal threads and the external threads are NPT-type threads.
In an embodiment, the inflatable conjoined positive pressure hood further comprises an air supply pipe, two ends of which are respectively connected with the first connector and the second connector, wherein the air supply pipe is detachably connected with the first connector, and/or the air supply pipe is detachably connected with the second connector.
In one embodiment, the inflatable conjoined positive pressure hood further comprises a belt, and the air supply module is mounted on the belt.
In one embodiment, the lower end of the hood body is connected with a hood, the hood is provided with an expansion cavity, and the volume of the expansion cavity is adjustable, so that the inner wall surface of the hood is attached to a human body.
In one embodiment, the waistband is provided with a first connecting piece, the overclothes are provided with a second connecting piece, and the first connecting piece and the second connecting piece are detachably connected, so that the clothes of the overclothes can be folded towards the human body.
In one embodiment, one of the first connector and the second connector is a male buckle of a buckle, and the other of the first connector and the second connector is a female buckle of the buckle; or one of the first connecting piece and the second connecting piece is a sub-buckle of the snap buckle, and the other of the first connecting piece and the second connecting piece is a female buckle of the snap buckle.
In one embodiment, the first connector is a one-way air inlet valve disposed on the hood body; or the first connecting head is a one-way air inlet valve arranged at the upper end of the hood body, and a one-way exhalation valve is arranged at the lower end of the hood body.
In an embodiment, the air supply module includes an air feeder and a filter, the air feeder is used for feeding flowing air into the hood body, the air feeding flow of the air feeder is between 165 liters per minute and 210 liters per minute, the filter is used for filtering the air fed by the air feeder, the filter is arranged at an air outlet of the air feeder, the second connector is arranged on the filter, or the filter is arranged at an air inlet of the air feeder, and the second connector is arranged at an air outlet of the air feeder.
The utility model discloses technical scheme sets up first connector through the adoption on the hood body, set up the second connector on the air feed module, and can dismantle sealing connection with first connector and second connector, make only when one is damaged in hood body or the air feed module, can unpack first connector and second connector apart, make hood body and air feed module can separate, only need pull down one of wherein damage and replace, another person that does not damage can reuse, thereby it is extravagant to reduce.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of an embodiment of the pneumatic type conjoined positive pressure hood of the present invention;
fig. 2 is a schematic structural view of another view angle of an embodiment of the pneumatic type conjoined positive pressure hood of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
410 | First connecting |
| 110 | |
501 | |
| 120 | One-way |
502 | |
| 211 | |
510 | Second connecting |
| 220 | |
520 | |
| 230 | |
530 | Overclothes |
| 300 | |
540 | Sleeve of |
| 400 | Waist belt |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides an inflatable disjunctor malleation hood.
In the embodiment of the present invention, as shown in fig. 1 and 2, the inflatable conjoined positive pressure hood comprises a hood body 100 and an air supply module, wherein the hood body 100 is worn on the head of a human body, and the hood body 100 is worn on the head of the human body, so that the head of the human body can be isolated from the external environment, thereby preventing the polluted air from being sucked; hood body 100 is equipped with first connector 110, and the air feed module is equipped with second connector 230, and second connector 230 can dismantle sealing connection with first connector 110, utilizes second connector 230 can dismantle sealing connection with first connector 110, realizes the sealing connection between air feed module and the hood body 100 to for the inside required gas of breathing that provides of hood body 100, guarantee human normal breathing under the prerequisite of keeping apart.
The utility model discloses technical scheme sets up first connector 110 through the adoption on hood body 100, set up second connector 230 on the air feed module, and can dismantle sealing connection with first connector 110 and second connector 230, make when only one is damaged in hood body 100 or the air feed module, can unpack first connector 110 and second connector 230 apart, make hood body 100 and air feed module can separate, only need pull down one of wherein damage and replace, another person that does not damage can reuse, thereby it is extravagant to reduce.
In one embodiment, one of the first connector 110 and the second connector 230 is provided with an internal thread, and the other of the first connector 110 and the second connector 230 is provided with an external thread matching the internal thread. The first connector 110 and the second connector 230 are screwed together to realize the detachable sealing connection between the hood body 100 and the air supply module, so that additional sealing parts are not required, and the operation is convenient and fast.
In one embodiment, the internal thread and the external thread are NPT-shaped threads, so that the connection and the disassembly are convenient, and the sealing effect is good.
In one embodiment, the inflatable conjoined positive pressure hood further comprises an air supply pipe 300, and two ends of the air supply pipe 300 are detachably connected with the first connector 110 and the second connector 230 respectively. By providing the air supply duct 300, the connection of the first connector 110 and the second connector 230 is more convenient, and the distance between the hood body 100 and the air supply module can be adjusted more flexibly by the provision of the air supply duct 300. And the first connector 110 and the second connector 230 are detachably connected with the blast pipe 300, so that the detachment and replacement of the head cover body 100 and the air supply module are realized, and the detachment and replacement of the blast pipe 300 are also realized.
In another embodiment, the inflatable conjoined positive pressure hood further comprises an air supply pipe 300, one end of the air supply pipe 300 is detachably connected with the first connector 110, the other end of the air supply pipe 300 is fixed with the second connector 230, one end of the air supply end is detachably connected with the first connector 110, the hood body 100 and the air supply module can be detached and replaced, and the other end of the air supply pipe 300 is fixed with the second connector 230, so that the steps of installation and detachment are reduced while the detachment is realized, and the wearing process is simplified.
In another embodiment, the inflatable conjoined positive pressure hood further comprises an air supply pipe 300, one end of the air supply pipe 300 is fixed to the first connector 110, the other end of the air supply pipe 300 is detachably connected to the second connector 230, one end of the air supply end is fixed to the first connector 110, and the other end of the air supply pipe 300 is detachably connected to the second connector 230, so that the hood body 100 and the air supply module can be detached and replaced, steps of installation and detachment are reduced, and the wearing process is simplified.
In some embodiments, the blower tube 300 is a hose or a serpentine tube or a bellows tube. Because the user may cause the blast pipe 300 to buckle when using the inflatable disjunctor malleation hood, selects hose or coiled pipe or bellows as blast pipe 300, can reduce the probability that blast pipe 300 damaged in the user's use to ensure good leakproofness, prolong the life of inflatable disjunctor malleation hood, and, can also reduce the restriction of blast pipe 300 to the user's activity, be favorable to the user more nimble activity.
In an embodiment, the inflatable conjoined positive pressure hood further comprises a belt 400, the gas supply module is installed on the belt 400, and the gas supply module is installed on the belt 400, so that the gas supply module can be carried about when the user uses the inflatable conjoined positive pressure hood, thereby improving the convenience of using the inflatable conjoined positive pressure hood, and the gas supply module is installed on the belt 400, so that the user can adjust the gas supply module without detaching the inflatable conjoined positive pressure hood.
In one embodiment, the lower end of the hood body 100 is provided with a coat, and the coat is provided with an expansion cavity, wherein the volume of the expansion cavity is adjustable, so that the inner wall surface of the coat is attached to the human body. Through the lower extreme sealing connection dustcoat at hood body 100, the dustcoat sets up the inflation chamber, and the volume in inflation chamber is adjustable, the internal face and the human body laminating of dustcoat are made to the volume through adjustment inflation chamber, prevent that unpurified air from getting into hood body 100 through positions such as cuff or the clothing pendulum of dustcoat, reach good sealed effect, and because this technical scheme adopts the inflation of inflation chamber mode to make the internal face and the human body laminating of dustcoat, the sealed area of contact of dustcoat and human body has been increased, thereby reduce and tighten the dustcoat and to human pressure in order to seal, realized when making human dress comfortable, ensure good sealed effect.
In the above embodiment, when different users wear the inflatable conjoined positive pressure hood, the inner wall surface of the hood can be attached to the bodies of the users with different shapes by adjusting the volume of the expansion cavity, so that the users with different shapes can realize good sealing effect.
In some embodiments, the gown includes an inner layer 501 and an outer layer 502, with the edges of the inner layer 501 being sealingly joined to the edges of the outer layer 502 to form an inflation chamber between the inner layer 501 and the outer layer 502. The edge of the inner layer 501 and the edge of the outer layer 502 are connected in a sealing mode, so that the inner layer 501 and the outer layer 502 form a sealed bag body, the space in the bag body is an expansion cavity, and the expansion degree of the expansion cavity is adjusted by increasing or reducing the amount of fillers in the bag body, so that the purpose of adjusting the volume of the expansion cavity is achieved. Wherein, the filling material in the expansion cavity can be solid, gas, liquid or the mixture thereof.
In one embodiment, to reduce the burden on the user when wearing the inflatable conjoined positive pressure hood, the filler in the expansion chamber is selected to be gas, such as air, which is easily available and low in acquisition cost, and even if the hood is damaged, the air leaks from the expansion chamber without threatening the environment.
In one embodiment, the outer layer 502 is provided with an inflation valve 520 to inflate the inflation chamber with gas. By providing inflation valve 520 in outer layer 502, inflation of the inflation chamber is facilitated, making volume adjustment of the inflation chamber more convenient.
In one embodiment, the edges of the inner layer 501 and the outer layer 502 are sealed by heat sealing, so that the processing is convenient and the sealing effect is good.
In some embodiments, the overclothes are provided with an overclothes body 530 and sleeves 540, and the expansion cavities in the sleeves 540 extend from top to bottom to the position above the elbows, so that the arms of the user can be flexibly moved after the user wears the overclothes, the comfort level of wearing the overclothes by the user is improved, and meanwhile, the work and the activities of the user are facilitated.
In some embodiments, the gown is provided with a gown body 530 and sleeves 540, and the inflation chamber in the gown body 530 extends from top to bottom to above the waist, thereby facilitating the user's mobility after wearing the gown and reducing the impact of the inflation chamber of the gown on the user's walking and other activities.
In one embodiment, the expansion cavities in the sleeves 540 extend from top to bottom to above the elbows, and the expansion cavities in the coat body 530 extend from top to bottom to above the waist, so that the expansion cavities in the sleeves 540 and the expansion cavities in the coat body 530 are combined to form a short sleeve shape or a middle sleeve shape, comfort when a user wears the short sleeve is guaranteed, and a good sealing effect can be achieved.
In one embodiment, the gown is provided with the sleeves 540, the cuffs of the sleeves 540 are provided with elastic ropes, and the cuffs are tightly hooped on the arms of the user by the elastic ropes, so that the inner wall surface of the gown is further enabled to be better fit with the body of the user. It can be understood that, in this embodiment, the effect of cramping of bungee cord is in order to carry out preliminary restraint to the cuff for under inflation chamber inflation state, the effort that draws in is produced to the cuff to the bungee cord, need not the direct arm or the wrist that cramp user of bungee cord, thereby avoids relying on the bungee cord to cramp user's arm or wrist completely and seal and the discomfort that causes.
In other embodiments, the cuff of the sleeve 540 may also be provided with a strap, and the strap is used to restrain the cuff, which is low in cost.
In some embodiments, the waistband 400 is provided with the first connecting piece 410, the overclothes are provided with the second connecting piece 510, the first connecting piece 410 and the second connecting piece 510 can be detachably connected, so that the clothes of the overclothes can be gathered towards the human body, the clothes of the overclothes can be gathered towards the human body through the clothes of the overclothes, the inner wall surface of the overclothes can be tightly attached to the human body, the sealing effect is further enhanced, the sealing effect is enhanced, the disassembly of the hood body 100 and the air supply module can not be hindered, and the wearing comfort level can not be influenced.
In an embodiment, one of the first connecting member 410 and the second connecting member 510 is a male buckle of a buckle, and the other of the first connecting member 410 and the second connecting member 510 is a female buckle of the buckle, so that the operation is convenient and fast by utilizing the buckle buckling mode, the connection is firm, a user can wear the inflatable conjoined positive pressure hood quickly, and the time consumed by wearing is saved.
In another embodiment, one of the first connecting member 410 and the second connecting member 510 is a male snap of a male snap, and the other of the first connecting member 410 and the second connecting member 510 is a female snap of a male snap, so that the operation is convenient and fast, the connection is firm, the user can wear the inflatable conjoined positive pressure hood fast, and the time consumed by wearing the inflatable conjoined positive pressure hood is saved.
In the above embodiment, two sets of buckles or snap buttons are respectively disposed on the front side and the rear side of the gown, so that the tension at the connection position of the gown and the waistband 400 is uniformly distributed.
In an embodiment, the first connection head 110 is a one-way air inlet valve disposed on the hood body 100, so that the air exhaled by the user cannot enter the air supply pipe 300 through the one-way air inlet valve, and the exhaled air is prevented from obstructing the air supply module to supply clean air to the hood body 100. The one-way air inlet valve is used as the first connecting head 110, the existing components are fully utilized to realize the detachable connection of the hood body 100 and the air supply module, and the weight of the inflatable conjoined positive pressure hood is reduced, so that the burden of a user when wearing the hood is reduced.
In another embodiment, the first connection head 110 is a one-way air inlet valve disposed at the upper end of the hood body 100, the lower end of the hood body 100 is disposed with a one-way exhalation valve 120, the one-way exhalation valve 120 is used to exhaust the air exhaled by the user, and the one-way air inlet valve is used to input clean air, so as to realize the circulation of clean air and make the user breathe more smoothly. Moreover, because the exhalation direction is obliquely front lower direction when a person is in a standing posture or a sitting posture, the unidirectional exhalation valve 120 is arranged at the lower end of the hood body 100, and the unidirectional air inlet valve is arranged at the upper end of the hood body 100, so that exhaled air can be exhausted timely, clean air can be input timely, the phenomenon that the air exhaled by a user is not exhausted timely, the space in the hood body 100 is occupied and even the air is inhaled again by the user is avoided, the phenomenon that the clean air is directly exhausted after entering the hood body 100 without being utilized by the user is also avoided, the utilization rate of the clean air is improved, the smooth breathing of the user is guaranteed, and the consumption of the clean air is reduced.
In an embodiment, the front side of the hood body 100 is transparent to the eyes, so that the normal viewing of the user after wearing the inflatable conjoined positive pressure hood is guaranteed, and the work activity of the user is facilitated.
In another embodiment, the front side of the hood body 100 is completely transparent, so that the field of vision is wider after the user wears the inflatable conjoined positive pressure hood, and the work activity of the user is facilitated.
In an embodiment, the air supply module includes a blower 211 and a filter 220, the blower 211 is used for introducing flowing air into the head cover body 100, the filter 220 is used for filtering the air introduced by the blower 211, the filter 220 is disposed at an air outlet of the blower 211, and the second connector 230 is disposed on the filter 220. The blower 211 is used to introduce flowing air into the hood body 100, which is beneficial to timely discharge the air exhaled by the user in the hood body 100, thereby ensuring that the user breathes more smoothly. The filter 220 is arranged at the air outlet of the blower 211, so that the air conveyed by the blower 211 is filtered by the filter 220 before entering the air supply pipe 300, the second connector 230 is arranged on the filter 220, the second connector 230 is prevented from being additionally arranged, and the overall occupied volume is reduced.
In the above embodiment, the wind level of the blower 211 is adjustable, the lowest level is 165 liters per minute, and the highest level is 210 liters per minute, i.e. the range of the blowing flow rate of the blower 211 is between 165 liters per minute and 210 liters per minute. It can be understood that when the air supply flow rate is increased, the noise generated by the air supply machine 211 is also increased correspondingly, and the maximum air supply flow rate is set to be 210 liters per minute in the above embodiment, so as to ensure that the noise of the air supply machine 211 is in a lower range; when the air supply flow is reduced, the positive pressure protection effect and the defogging effect of the hood body 100 are correspondingly weakened, and the minimum air supply flow is set to be 165 liters per minute in the embodiment, so that the better defogging and stronger positive pressure protection effects are achieved while the lower noise is ensured.
In another embodiment, the filter 220 is disposed at an air inlet of the blower 211, the second connector 230 is disposed at an air outlet of the blower 211, and the filter 220 is disposed at the air inlet of the blower 211, so that air is filtered by the filter 220 before entering the blower 211, thereby reducing pollution to the blower 211, and the filter 220 is disposed at the air inlet of the blower 211, thereby avoiding additional addition of the second connector 230, and reducing the overall occupied volume.
The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (10)
1. An inflatable conjoined positive pressure hood, comprising:
the head cover comprises a head cover body and a connecting piece, wherein the head cover body is worn on the head of a human body and is provided with a first connecting head;
and the air supply module is provided with a second connector, and the second connector is detachably and hermetically connected with the first connector.
2. The inflatable one-piece positive pressure hood of claim 1, wherein one of said first connector and said second connector is provided with internal threads and the other of said first connector and said second connector is provided with external threads that mate with the internal threads.
3. The inflatable one-piece positive pressure hood of claim 2, wherein said internal threads and said external threads are NPT-type threads.
4. The inflatable conjoined positive pressure hood according to claim 1, further comprising a blast pipe having two ends connected to the first connector and the second connector respectively, wherein the blast pipe is detachably connected to the first connector and/or the blast pipe is detachably connected to the second connector.
5. The inflatable one-piece positive pressure hood of claim 1, further comprising a belt, the gas supply module being mounted on the belt.
6. The inflatable one-piece positive pressure hood according to claim 5, wherein the lower end of the hood body is connected with a hood, the hood is provided with an expansion cavity, and the volume of the expansion cavity is adjustable so that the inner wall surface of the hood fits with a human body.
7. The inflatable linked positive pressure hood of claim 6, wherein a first connector is provided on said waistband and a second connector is provided on said gown, said first connector being removably connected to said second connector so that the garment of said gown is swung toward the body.
8. The inflatable one-piece positive pressure hood of claim 7, wherein one of said first connector and said second connector is a male buckle of a male buckle and the other of said first connector and said second connector is a female buckle of a male buckle; or,
one of the first connecting piece and the second connecting piece is a sub-buckle of the snap buckle, and the other of the first connecting piece and the second connecting piece is a female buckle of the snap buckle.
9. The inflatable one-piece positive pressure hood of any of claims 1 to 8, wherein said first connector is a one-way intake valve disposed on said hood body; or,
the first connecting head is a one-way air inlet valve arranged at the upper end of the hood body, and a one-way exhalation valve is arranged at the lower end of the hood body.
10. The inflatable conjoined positive pressure hood according to any of claims 1 to 8, wherein the air supply module comprises an air blower and a filter, the air blower is used for introducing flowing air into the hood body, the air supply flow rate of the air blower is between 165 liters per minute and 210 liters per minute, the filter is used for filtering the air introduced by the air blower, the filter is arranged at the air outlet of the air blower, the second connector is arranged on the filter, or the filter is arranged at the air inlet of the air blower, and the second connector is arranged at the air outlet of the air blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020438270.1U CN212038651U (en) | 2020-03-30 | 2020-03-30 | Inflatable conjoined positive pressure head cover |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020438270.1U CN212038651U (en) | 2020-03-30 | 2020-03-30 | Inflatable conjoined positive pressure head cover |
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| CN212038651U true CN212038651U (en) | 2020-12-01 |
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| CN202020438270.1U Active CN212038651U (en) | 2020-03-30 | 2020-03-30 | Inflatable conjoined positive pressure head cover |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112827086A (en) * | 2021-01-18 | 2021-05-25 | 天津大学合肥创新发展研究院 | Positive pressure protective hood integrating voice communication module function |
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2020
- 2020-03-30 CN CN202020438270.1U patent/CN212038651U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112827086A (en) * | 2021-01-18 | 2021-05-25 | 天津大学合肥创新发展研究院 | Positive pressure protective hood integrating voice communication module function |
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