A protective state switchable talker structure

Abstract

The present invention relates to the field of talker structures on gas masks, specifically a talker structure that can be converted into a protective state, comprising a talker body, a talker membrane arranged at the upper rear end of the talker body, an exhalation valve arranged at the lower rear end of the talker body, a displacement fixing frame fixedly arranged in the talker body; a talker cover is arranged at the front end cover of the talker body, and a knob is arranged on the talker cover; a displacement pusher is arranged in the displacement fixing frame; and the talker membrane includes a talker membrane seat that can be sealed with the inner wall of the talker body. The present invention can realize the forward and backward movement of the displacement pusher through the knob, and link the closing and opening between the talker membrane and the talker body, and realize the exchange of airflow inside and outside the mask through the gap between the talker membrane and the talker body, effectively reducing the breathing air resistance. When the mask is worn in a non-protective state, the breathing air resistance of the wearer can be reduced by more than 55%, effectively and quickly discharging the hot waste gas exhaled by the person out of the mask.

Description

Technical Field

[0001] The invention relates to the field of talker structures on gas masks, in particular to a talker structure with switchable protection states. Background Art

[0002] The intercom is one of the main parts of the gas mask. It is used in conjunction with the mask to realize the function of voice transmission for the person wearing the mask. The intercom mainly includes the intercom body, intercom cover, intercom clamp, exhalation valve piece, intercom membrane, intercom membrane pressing frame, etc.

[0003] At present, the intercom structure of gas masks at home and abroad only realizes the voice transmission function and the exhaust of the exhaled gas of the human body. After wearing the mask for a long time, due to the insufficient exchange of airflow inside and outside the mask, it is easy to cause discomfort to the human body, affecting the comfort of the wearer, and causing stuffiness and difficulty in breathing. Summary of the invention

[0004] In order to solve the problem that a gas mask may cause discomfort to a human body after being worn for a long time, the present invention provides a protective state switchable talker structure.

[0005] The present invention is realized by the following technical scheme: a protective state switchable talker structure, comprising a talker body, a talker membrane arranged at the upper rear end of the talker body, an exhalation valve arranged at the lower rear end of the talker body,

[0006] A displacement fixing frame is fixedly arranged in the intercom body, the displacement fixing frame comprises a fixing frame body, an annular stop plate is arranged in the middle of the fixing frame body, and at least three guide ribs are radially arranged between the annular stop plate and the fixing frame body;

[0007] The front end cover of the intercom body is provided with an intercom cover, and the intercom cover is provided with a knob member, and the knob member includes a knob shaft rotatably provided on the intercom cover, a knob handle is fixedly provided at one end of the knob shaft outside the intercom cover, and a knob head is fixedly provided at the other end of the knob shaft, and at least one control surface is formed on one end surface of the knob head close to the knob shaft;

[0008] A displacement pusher is arranged in the displacement fixing frame, and the displacement pusher comprises a displacement base with a knob hole in the middle, a guide wall plate is arranged on the displacement base towards the call membrane, and the guide wall plate has sliding holes corresponding to all guide ribs for sliding guide cooperation, the annular stop plate is located on the displacement base near the call membrane, and the displacement base can cooperate with the annular stop plate for stopping, a displacement cover is arranged on the guide wall plate cover, and a reset spring is arranged between the annular stop plate and the displacement cover, the knob head passes through the knob hole, and a convex block corresponding to the control surface of the knob head is convexly arranged on the displacement base at the edge of the knob hole, and the convex block has at least one inclined surface slidably cooperated with the corresponding control surface, and the control surface of the knob head can slide along the corresponding inclined surface to the convex top of the convex block;

[0009] The communication membrane comprises a communication membrane seat which can be sealed with the inner wall of the communication device body, one end surface of the communication membrane seat is connected to the displacement cover, and the other end surface of the communication membrane seat is provided with a communication membrane body.

[0010] As a further improvement of the technical solution of the present invention, the interior of the communication device body has a communication membrane cavity capable of accommodating a communication membrane seat, and one side of the communication membrane cavity has a communication device wall capable of sealingly cooperating with an end face of the communication membrane seat.

[0011] As a further improvement of the technical solution of the present invention, a receiving groove is arranged on the wall of the communication device, and a sealing ring is arranged in the receiving groove to seal with an end surface of one end of the communication membrane seat.

[0012] As a further improvement of the technical solution of the present invention, there are two control surfaces on the knob head, the two control surfaces are located oppositely at the radial ends of the knob shaft, and the protrusions corresponding to the control surfaces are located at relative positions of the knob hole.

[0013] As a further improvement of the technical solution of the present invention, there is a spacing between adjacent protrusions that can accommodate the control surface of the knob head.

[0014] As a further improvement of the technical solution of the present invention, the guide rib includes an inner rib body and an outer rib body, and an arc-shaped slope surface is provided between the outer rib body and the inner rib body. The inner rib body is located in the corresponding sliding hole, and the positioning surface formed by the arc-shaped slope surfaces of all guide ribs can be positioned and matched with the front edge of the sliding hole.

[0015] As a further improvement of the technical solution of the present invention, a calling film pressing frame is provided on the other end surface of the calling film seat, and the calling film body is fixed on the calling film seat through the calling film pressing frame.

[0016] The protective state switchable intercom structure described in the present invention can realize the forward and backward movement of the displacement pusher through the knob, thereby forming the compression and relaxation of the reset spring, and linking the closing and opening between the intercom membrane and the intercom body. The gap between the intercom membrane and the intercom body can realize the exchange of airflow inside and outside the mask, effectively reducing the breathing resistance. According to actual measurements, when the mask is worn in a non-protective state, the breathing resistance of the wearer can be reduced by more than 55%, and the hot exhaust gas exhaled by the person can be quickly discharged from the mask without passing through the exhalation valve, providing wearing comfort; when a protective environment is encountered suddenly, the intercom membrane and the intercom body can be closed through the knob, and the protective mask is transferred to a normal protective state. This structure can significantly improve the comfort and practicality of wearing the mask, and is easy to operate. By rotating the knob, the mask can be quickly switched between the protective and protection states, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 Schematic diagram of the knob status in protective or non-protective status.

[0019] Figure 2 for Figure 1 AA longitudinal section of .

[0020] Figure 3 This is a schematic diagram of the status of the knob in the protection state.

[0021] Figure 4 It is a schematic diagram of the matching state of the knob head and the protrusion of the knob member in the chemical protection state.

[0022] Figure 5 It is a structural schematic diagram of the knob component.

[0023] Figure 6 It is a schematic structural diagram of the displacement fixing frame.

[0024] Figure 7 It is a structural schematic diagram of the communication membrane seat.

[0025] Figure 8 It is a schematic diagram of the internal structure of the intercom body.

[0026] In the figure: 1-talkie body, 101-talkie cover, 102-talkie wall, 103-sealing ring, 2-talkie membrane, 201-talkie membrane seat, 202-talkie membrane body, 203-talkie membrane clamping frame, 204-support rib, 3-exhalation valve, 4-displacement fixing frame, 401-fixing frame body, 402-annular stop plate, 403-guide rib, 4031-inner rib body, 4032-outer rib body, 404-support angle, 5-displacement pusher, 501-knob hole, 502-displacement base, 503-guide wall plate, 504-sliding hole, 505-displacement cover, 506-reset spring, 507-bump, 508-inclined surface, 6-knob member, 601-knob shaft, 602-knob handle, 603-knob head, 604-control surface. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. An embodiment is an exemplary implementation or example. References to "an embodiment", "one embodiment", "some embodiments", "various embodiments" or "other embodiments" in the specification mean that the specific technical features, configurations or characteristics described in conjunction with the embodiment are included in at least some embodiments of the technical solution, but not necessarily all embodiments. The appearance of "an embodiment", "one embodiment", "some embodiments" and "various embodiments" does not necessarily refer to the same embodiment. Elements or aspects from one embodiment may be combined with elements or aspects of another embodiment.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] It should be noted that, throughout the present invention, unless otherwise specified, “left” and “right” refer to “the front of the mask” and “the back of the mask” respectively.

[0031] like Figures 1 to 8 As shown, the present invention provides a specific embodiment of a protective state switchable talker structure, including a talker body 1, a talker membrane 2 arranged at the upper rear end portion of the talker body 1, and an exhalation valve 3 arranged at the lower rear end portion of the talker body 1.

[0032] The communication device body 1 is provided with a displacement fixing frame 4 fixedly disposed therein. Figure 6 As shown, the displacement fixing frame 4 includes a fixing frame body 401, a ring-shaped stop plate 402 is arranged in the middle of the fixing frame body 401, and at least three guide ribs 403 are radially arranged between the ring-shaped stop plate 402 and the fixing frame body 401. In one example, the fixing frame body 401 is an annular structure, and the guide ribs 403 are supported and connected between the inner annular surface of the fixing frame body 401 and the outer annular surface of the annular stop plate 402. In order to reduce the deflection of the displacement pusher 5 relative to the displacement fixing frame 4 during the forward and backward displacement process, in some examples, the guide ribs 403 include an inner rib body 4031 and an outer rib body 4032, and there is an arc slope between the outer rib body 4032 and the inner rib body 4031. As shown in the figure, the thickness of the outer rib 4032 is greater than the thickness of the inner rib 4031, the width of the outer rib 4032 is equal to the width of the inner rib 4031, and the end surface of the outer rib 4032 close to the communication film 2 is aligned with the end surface of the inner rib 4031 ( Figure 6 The inner rib 4031 and the outer rib 4032 are flush with each other, so the arc-shaped slope faces the displacement base 502. Specifically, the inner rib 4031 and the outer rib 4032 can be made by integral molding. In this embodiment, the inner rib 4031 is located in the corresponding slide hole 504, and the positioning surface formed by the arc-shaped slope of all the guide ribs 403 can be positioned and matched with the front edge of the slide hole 504. When the control surface 604 is separated from the inclined surface 508, one end of the return spring 506 is matched with the end surface of the annular stop plate 402 close to the call membrane 2, and the other end of the return spring 506 is matched with the displacement cover 505. Due to the elastic force of the return spring 506, the other end of the return spring 506 pushes the displacement cover 505 to move to the right (behind the mask 7), thereby causing the displacement pusher 5 to move to the right as a whole (as shown in the figure). Figure 2 direction), forming a Figure 2 The state shown is a non-protective state or a preventive protection state. In this embodiment, the return spring 506 is circumferentially disposed in an annular area between the projection 507 and the guide wall plate 503 .

[0033] In order to facilitate the installation of the displacement fixing frame 4, the present embodiment also provides a specific embodiment for installing the displacement fixing frame 4, specifically: a plurality of support angles 404 are extended outwardly from the outer ring surface of the fixing frame body 401, and the support angles 404 are fixedly connected to the inner wall of the speaker body 1 by bolt supports.

[0034] The front end cover of the talker body 1 is provided with a talker cover 101. In some examples, the talker cover 101 has ventilation holes or grille holes to facilitate the airflow in the exhalation valve 3 to flow out from the inside of the talker body 1, and also to facilitate the wearer to communicate with the outside world through the talker membrane 2.

[0035] Specifically, Figure 4 and 5 As shown, the talker cover 101 is provided with a knob member 6, and the knob member 6 includes a knob shaft 601 rotatably provided on the talker cover 101, a knob handle 602 is fixedly provided at one end of the knob shaft 601 outside the talker cover 101, and a knob head 603 is fixedly provided at the other end of the knob shaft 601, and at least one control surface 604 is formed on the end surface of the knob head 603 close to the knob shaft 601. In one example of the present invention, two control surfaces 604 are formed on the end surface of the knob head 603 close to the knob shaft 601. Since the knob head 603 has two control surfaces 604, there are two corresponding protrusions 507 on the displacement base 502. In some examples, in order to prevent the knob member 6 from shaking back and forth on the talker cover 101, preferably, a limiting groove is circumferentially provided on the knob shaft 601, and the knob shaft 601 is limitedly rotated with the talker cover 101 through the limiting groove.

[0036] like Figure 2 and 4As shown, a displacement pusher 5 is arranged in the displacement fixing frame 4, and the displacement pusher 5 includes a displacement base 502 with a knob hole 501 in the middle, and a guide wall plate 503 is arranged on the displacement base 502 facing the call film 2, and the guide wall plate 503 has a sliding hole 504 corresponding to all the guide ribs 403 for sliding and guiding, and the annular stop plate 402 is located on the side of the displacement base 502 close to the call film 2, and the displacement base 502 can be stopped and matched with the annular stop plate 402, and the guide wall plate 503 The upper cover is provided with a displacement cover 505, a return spring 506 is provided between the annular stop plate 402 and the displacement cover 505, the knob head 603 passes through the knob hole 501, and a convex block 507 corresponding to the control surface 604 of the knob head 603 is provided on the displacement base 502 at the edge of the knob hole 501, and the convex block 507 has at least one inclined surface 508 that is slidably matched with the corresponding control surface 604, and the control surface 604 of the knob head 603 can slide along the corresponding inclined surface 508 to the convex top of the convex block 507. In some examples, the sliding hole 504 can penetrate the guide wall plate 503 along the length direction, that is, one end (front edge) of the sliding hole 504 is located at the displacement base 502, and the other end (rear edge) is located at the displacement cover 505. In other examples, the sliding hole 504 does not need to penetrate the guide wall plate 503 along the length direction, that is, the two ends of the sliding hole 504 are respectively located on the guide wall plate 503. In some examples, there are two inclined surfaces 508 on the protrusion 507, and they are relatively located on both sides of the protrusion top. The communication membrane 2 includes a communication membrane seat 201 that can be sealed with the inner wall of the communication device body 1, one end surface of the communication membrane seat 201 is connected to the displacement cover 505, and the other end surface of the communication membrane seat 201 is provided with a communication membrane body 202.

[0037] like Figure 2 and 4As shown, the rotation of the knob head 603 is controlled by the knob handle 602 and the knob shaft 601. When the knob head 603 is vertically located in the knob hole 501, the control surface 604 does not contact the corresponding inclined surface 508, the reset spring 506 is relatively in a relaxed state, the displacement pusher 5 is to the right, and there is a gap between the call membrane seat 201 and the inner wall of the call body 1. At this time, the airflow can flow freely through the gap between the call membrane seat 201 and the inner wall of the call body 1, and the hot exhaust gas of the wearer can be effectively discharged quickly from the mask 7. The mask 7 is in a non-protective state or a preventive protection state. When the knob head 603 rotates 90° (or -90°), the control surface 604 moves along the corresponding inclined surface 508 to the convex top of the protrusion 507. At this time, the displacement base 502 is pushed to the left. When the control surface 604 is located behind the convex top of the corresponding protrusion 507, a locked state is formed. During the movement of the displacement base 502, the call membrane seat 201 connected to the displacement cover 505 also moves to the left synchronously, so that the call membrane seat 201 is sealed with the inner wall of the call body 1. At this time, the airflow can only be discharged from the mask 7 through the exhalation valve 3, and the mask 7 is in a protective state.

[0038] Preferably, in order to keep the control surface 604 of the knob head 603 in a stable locked state on the convex top of the protrusion 507 , the convex top of the protrusion 507 preferably has a locking surface, and the locking surface is a plane or a curved surface that can accommodate the knob head 603 .

[0039] like Figure 8 As shown, this embodiment provides a structural example of a communication device body 1, wherein the communication device body 1 has a communication membrane cavity capable of accommodating a communication membrane seat 201, and one side of the communication membrane cavity has a communication device wall 102 capable of sealingly cooperating with one end face of the communication membrane seat 201. As shown in the figure, the communication membrane cavity and the exhalation valve 3 are independent components, so whether the communication membrane 2 moves to the left or to the right, it will not affect the use of the exhalation valve 3. In this embodiment, the exhalation valve 3 is a well-known component, specifically including an exhalation valve sheet. Furthermore, a receiving groove is provided on the communication device wall 102, and a sealing ring 103 is provided in the receiving groove to seal with one end face of the communication membrane seat 201.

[0040] In some examples, there are two control surfaces 604 on the knob head 603, and the two control surfaces 604 are oppositely located at the radial ends of the knob shaft 601, and the protrusions 507 corresponding to the control surfaces 604 are respectively located at relative positions of the knob hole 501. In this embodiment, one of the two inclined surfaces 508 on each protrusion 507 can be a locking inclined surface or a reset inclined surface, and the other can also be a locking inclined surface or a reset inclined surface. When the control surface 604 changes from a locking state to a reset state, it can slide up and down from the same inclined surface 508, or it can slide up from one inclined surface 508 and slide down from the other inclined surface 508.

[0041] In order to facilitate the wearer to judge the protective state of the mask 7 according to the rotation of the knob 6, there is a distance between adjacent protrusions 507 that can accommodate the control surface 604 of the knob head 603.

[0042] This embodiment also provides a specific implementation of the communication film 2 , that is, a communication film pressing frame 203 is provided on the other end surface of the communication film seat 201 , and the communication film body 202 is fixed on the communication film seat 201 through the communication film pressing frame 203 .

[0043] Furthermore, in order to facilitate the connection between the communication membrane seat 201 and the displacement cover 505, as shown in FIG. Figure 7 As shown, a plurality of support ribs 204 are radially arranged in the middle of the communication membrane seat 201, and the middle intersection of the plurality of support ribs 204 is connected to the displacement cover 505 by bolts.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A protective state switchable intercom structure, comprising an intercom body, an intercom membrane arranged at the upper rear end of the intercom body, and an exhalation valve arranged at the lower rear end of the intercom body. It is characterized in that A displacement fixing frame is fixedly arranged in the intercom body, the displacement fixing frame comprises a fixing frame body, an annular stop plate is arranged in the middle of the fixing frame body, and at least three guide ribs are radially arranged between the annular stop plate and the fixing frame body; The front end cover of the intercom body is provided with an intercom cover, and the intercom cover is provided with a knob member, and the knob member includes a knob shaft rotatably provided on the intercom cover, a knob handle is fixedly provided at one end of the knob shaft outside the intercom cover, and a knob head is fixedly provided at the other end of the knob shaft, and at least one control surface is formed on one end surface of the knob head close to the knob shaft; A displacement pusher is arranged in the displacement fixing frame, and the displacement pusher comprises a displacement base with a knob hole in the middle, a guide wall plate is arranged on the displacement base towards the call membrane, and the guide wall plate has sliding holes corresponding to all guide ribs for sliding guide cooperation, the annular stop plate is located on the displacement base near the call membrane, and the displacement base can cooperate with the annular stop plate for stopping, a displacement cover is arranged on the guide wall plate cover, and a reset spring is arranged between the annular stop plate and the displacement cover, the knob head passes through the knob hole, and a convex block corresponding to the control surface of the knob head is convexly arranged on the displacement base at the edge of the knob hole, and the convex block has at least one inclined surface slidably cooperated with the corresponding control surface, and the control surface of the knob head can slide along the corresponding inclined surface to the convex top of the convex block; The communication membrane comprises a communication membrane seat which can be sealed with the inner wall of the communication device body, one end surface of the communication membrane seat is connected to the displacement cover, and the other end surface of the communication membrane seat is provided with a communication membrane body.

2. A protective state switchable talker structure according to claim 1, It is characterized in that The interior of the communication device body is provided with a communication film cavity capable of accommodating a communication film seat, and one side of the communication film cavity is provided with a communication device wall capable of sealingly cooperating with an end surface of the communication film seat.

3. A protective state switchable talker structure according to claim 2, It is characterized in that A receiving groove is arranged on the wall of the communication device, and a sealing ring which is sealed and matched with an end surface of a communication membrane seat is arranged in the receiving groove.

4. A protective state switchable talker structure according to claim 1, It is characterized in that There are two control surfaces on the knob head, which are located opposite to each other at two radial ends of the knob shaft, and the protrusions corresponding to the control surfaces are located at relative positions of the knob hole.

5. A protective state switchable talker structure according to claim 4, It is characterized in that There is a spacing between adjacent protrusions that can accommodate the control surface of the knob head.

6. A protective state switchable talker structure according to claim 1, It is characterized in that The guide ribs include an inner rib body and an outer rib body, an arc-shaped slope surface is provided between the outer rib body and the inner rib body, the inner rib body is located in the corresponding sliding hole, and the positioning surface formed by the arc-shaped slope surfaces of all guide ribs can be positioned and matched with the front edge of the sliding hole.

7. A protective state switchable talker structure according to claim 1, It is characterized in that A communication film pressing frame is arranged on the other end surface of the communication film seat, and the communication film body is fixed on the communication film seat through the communication film pressing frame.

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