CN217773146U - Breathing training device - Google Patents

Abstract

The utility model discloses a breathing training ware, include: the shell is internally provided with a breathing cavity, the shell is provided with a suction nozzle, an air suction port and an exhalation port, and the suction nozzle, the air suction port and the exhalation port are all communicated with the breathing cavity; the expiratory vent is provided with a one-way valve, the breathing cavity is internally provided with an air flow adjusting assembly capable of adjusting the air inflow of the inspiratory vent, the lower part of the air flow adjusting assembly is provided with a resistance adjusting assembly which is used for driving the air flow adjusting assembly to move and has a plurality of gears, and the resistance adjusting assembly is arranged outside the shell. The breathing training ware simple structure, small that this application provided, accessible one-hand operation because resistance adjustment assembly has a plurality of gears, the inspiratory capacity of passageway of breathing in is adjustable to can adjust the size of breathing in impedance according to patient actual conditions.

Description

Breathing training device

Technical Field

The utility model relates to the technical field of medical equipment, more specifically say, relate to a breathing training ware.

Background

The data evaluated by the world health organization show that about 6500 million people worldwide suffer from COPD and 300 million people die in 2005. According to the evaluation of symptoms, lung function changes and acute exacerbation risks by the modified British Medical Research Council Dyspnea Scale (mrc), the severity of the illness of patients with COPD in the stationary phase can be comprehensively evaluated, and corresponding therapeutic drugs can be selected. 2017COPD Global initiative: global strategies for COPD diagnosis, treatment and prevention are clearly indicated for 2018,24 (4): evaluation of patients with dyspnea with severe symptoms and a high risk of acute exacerbations B, C and group D patients should be encouraged to utilize a respiratory trainer for rehabilitation training.

The breathing training ware that has now on the market makes the bobble suspend in the highest scale mark department through the patient is breathed in to reach the training effect, the device is bulky, and the structure is complicated, can't adjust the impedance size according to patient's actual conditions, can't satisfy the user to breathing convenient, accurate requirement of training ware.

In summary, how to solve the problems that the conventional breathing training device has a large volume and a complex structure and cannot adjust the impedance according to the actual condition of a patient is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a breathing training ware, this breathing training ware is small, simple structure, can adjust the impedance size according to patient's actual conditions.

In order to achieve the above object, the present invention provides the following technical solutions:

a breathing trainer, comprising: the air purifier comprises a shell, a suction cavity is arranged in the shell, a suction nozzle, an air suction port and an exhalation port are arranged on the shell, and the suction nozzle, the air suction port and the exhalation port are all communicated with the suction cavity; the expiratory vent is provided with a one-way valve, an air flow adjusting assembly capable of adjusting the air inflow of the inspiratory vent is arranged in the respiratory cavity, the lower part of the air flow adjusting assembly is provided with a resistance adjusting assembly which is used for driving the air flow adjusting assembly to move and has a plurality of gears, and the resistance adjusting assembly is arranged outside the shell.

Preferably, the air volume adjusting assembly comprises a rotating cavity and a rotating rod, a plurality of air holes with different sizes are formed in the side wall of the rotating cavity, all the air holes are arranged along the circumferential direction of the rotating cavity, all the air holes and the air suction port are located at the same horizontal position, a top opening is formed in the top of the rotating cavity, the top end of the rotating cavity is lower than the suction nozzle and the air suction port, the resistance adjusting assembly is a rotating adjusting assembly with a plurality of gears, and the rotating adjusting assembly is connected with the rotating rod.

Preferably, the top opening is provided with a ventilated physiotherapy box.

Preferably, all the air holes are arranged in an increasing or decreasing order along the circumferential direction of the rotating cavity.

Preferably, the rotary adjusting assembly with set up fixed connection subassembly between the bottom opening of shell, the bottom periphery of rotary rod sets up annular boss, the rotatable setting of annular boss in fixed connection subassembly's inner week, the rotatable setting of rotary adjusting assembly in fixed connection subassembly's periphery.

Preferably, fixed connection subassembly includes fixed barrel, the internal perisporium of fixed barrel sets up decurrent annular step face, annular boss set up in annular step face below in the fixed barrel, the upper portion of annular boss with the lower part of annular boss sets up the axial spacing ring respectively, the periphery of annular boss with set up radial spacing ring between the inner wall of fixed barrel, the bottom terminal surface of fixed barrel sets up and is used for supporting the lower part of annular boss the solid fixed ring of axial spacing ring.

Preferably, the periphery of fixed barrel sets up the annulus, the up end of annulus with the side of fixed barrel is passed through the annular slab and is connected, rotation regulation subassembly includes knob, spring and fender ring, the spring set up in the annulus with between the fixed barrel, keep off the ring set up in the lower part of spring, the knob set up in keep off the lower part of ring, the lower terminal surface that keeps off the ring sets up a plurality of lugs, the top terminal surface of knob set up with the lug matches the joint, and with the draw-in groove that gear quantity is unanimous, all the draw-in groove with all the position one-to-one of gas pocket, the periphery of fixed barrel sets up a plurality of first spacing grooves, keep off the inner periphery of ring set up with first spacing groove matches, and the unanimous first spacing arch of quantity, the knob with annular boss below rotary rod connection.

Preferably, the center of knob sets up connecting bolt, the inside bottom surface setting of knob is used for holding annular boss below the circular slot of rotary rod, the inner wall of circular slot sets up the second spacing groove, the periphery of rotary rod sets up the card and goes into the periphery of rotary rod sets up the cardSecond oneThe second limiting bulge is arranged in the limiting groove.

Preferably, the number of the first limiting grooves is the same as that of the first limiting grooves, and each number corresponds to the position of each air hole.

Preferably, a ventilation bracket is arranged in the expiration port, the one-way valve is a one-way membrane which can be lifted and arranged at the upper part of the ventilation bracket, and a ventilation expiration cover is arranged on the expiration port.

The air quantity adjusting assembly is positioned outside the shell and can be operated by one hand, the air quantity adjusting assembly is adjusted to a corresponding gear according to the actual demand of the inspiratory capacity, the suction nozzle is put into the mouth for inspiration when inspiration is carried out, the one-way valve of the expiratory mouth is closed, and external air enters the respiratory cavity from the inspiratory mouth and enters the human body through the suction nozzle; when the respirator breathes out, the exhaled air is exhaled by the suction nozzle, the one-way valve is opened, and the exhaled air passes through the breathing cavity and is exhausted by the exhalation port and the inhalation port.

The breathing training ware simple structure, small that this application provided, accessible one-hand operation because resistance adjustment assembly has a plurality of gears, the inspiratory capacity of passageway of breathing in is adjustable to can adjust the size of breathing in impedance according to patient actual conditions.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required 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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a front view of a respiratory training device provided by the present invention;

fig. 2 is an exploded view of the breathing training device provided by the present invention;

FIG. 3 is an isometric view of the stationary barrel and annular sleeve provided by the present invention;

fig. 4 is an isometric view of a knob provided by the present invention;

fig. 5 is an exploded view of the rotation adjustment assembly and the fixed connection assembly provided by the present invention;

fig. 6 is an isometric view of a one-way membrane provided by the present invention;

fig. 7 is an isometric view of a gas amount adjusting assembly provided by the present invention;

fig. 8 is a cross-sectional view of the breathing training device provided by the present invention;

fig. 9 is a cross-sectional view of the fixed cylinder and the annular sleeve provided by the present invention.

In FIGS. 1-9:

1-shell, 2-fixed connection component, 3-expiration cover, 4-inspiration cover, 5-physiotherapy box, 6-one-way membrane, 7-rotating rod, 8-rotation regulation component, 9-suction nozzle, 10-inspiration port;

21-annular sleeve, 22-axial limiting ring, 23-radial limiting ring, 24-screw, 25-fixing ring, 26-annular plate and 27-fixing barrel;

211-a first limit groove, 212-an L-shaped groove, 213-a screw hole and 214-a round guide groove;

51-physiotherapy box upper cover, 52-physiotherapy box base;

71-rotating cavity, 72-annular boss and 73-air hole;

81-knob, 82-spring, 83-baffle ring, 84-connecting bolt, 85-clamping groove, 86-second limiting groove and 87-circular groove.

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 work belong to the protection scope of the present invention.

The core of the utility model is to provide a breathing training device, this breathing training device is small, simple structure, can adjust the impedance size according to patient's actual conditions.

Referring to fig. 1 to 9, a respiratory training device includes: the air purifier comprises a shell 1, wherein a breathing cavity is arranged in the shell 1, a suction nozzle 9, an air suction port 10 and an exhalation port are arranged on the shell 1, and the suction nozzle 9, the air suction port 10 and the exhalation port are all communicated with the breathing cavity; the expiratory orifice is provided with a one-way valve, an air flow adjusting component capable of adjusting the air inflow of the inspiratory orifice 10 is arranged in the respiratory cavity, the lower part of the air flow adjusting component is provided with a resistance adjusting component which is used for driving the air flow adjusting component to move and has a plurality of gears, and the resistance adjusting component is arranged outside the shell 1.

It should be noted that the shape of the housing 1 is cylindrical, the mouthpiece 9 is disposed on one side of the housing 1, the inhalation port 10 is disposed on the other side of the housing 1, and the exhalation port is disposed on the top of the housing 1, and the positions of the mouthpiece 9, the inhalation port 10, and the exhalation port may be set according to practical application. The suction nozzle 9 is a flat cylindrical structure matched with the shape of the human mouth, and the air suction port 10 and the air exhaling port are both circular openings.

The air volume adjusting component is positioned outside the shell and can be operated by one hand, the air volume adjusting component is adjusted to a corresponding gear according to the requirement of the actual inspiratory capacity, the suction nozzle 9 is put into the mouth for inspiration when inspiration is performed, the one-way valve of the expiratory mouth is closed, and external air enters the respiratory cavity from the inspiratory mouth 10 and enters a human body through the suction nozzle 9; when the respirator exhales, the exhaled air is exhaled by the suction nozzle 9, the one-way valve is opened, and the exhaled air passes through the breathing cavity and is exhausted by the exhalation port and the inhalation port 10.

The breathing training ware simple structure, small that this application provided, accessible one-hand operation because resistance adjustment subassembly has a plurality of gears, and inspiratory capacity of inspiration channel is adjustable to can adjust the size of breathing in impedance according to patient actual conditions.

On the basis of the above embodiment, as a further preferred, the air volume adjusting assembly includes a rotating cavity 71 and a rotating rod 7, a plurality of air holes 73 with different sizes are formed in the side wall of the rotating cavity 71, all the air holes 73 are arranged along the circumferential direction of the rotating cavity 71, all the air holes 73 and the air suction port 10 are located at the same horizontal position, a top opening is formed in the top of the rotating cavity 71, the top end of the rotating cavity 71 is lower than the suction nozzle 9 and the air suction port, the resistance adjusting assembly is a rotating adjusting assembly 8 with a plurality of gears, and the rotating adjusting assembly 8 is connected with the rotating rod 7. The outer peripheral surface of the rotary cavity 71 is attached to the inner wall of the housing 1, so that air leakage is avoided. When the air suction device is used, the rotary adjusting component 8 is adjusted to a required gear to enable the air hole 73 with the corresponding size to be opposite to the air suction port 10, when air is sucked, external air enters along the air suction port 10 and enters the rotary cavity 71 through the air hole 73, and due to the fact that the top of the rotary cavity 71 is provided with the top opening, air is discharged to the suction nozzle 9 through the top opening; during exhalation, the exhaled air is expelled along the exhalation port and inhalation port 10.

On the basis of the above-described embodiment, as a further preference, the top opening is provided with the ventilated physiotherapy box 5. The physiotherapy box 5 comprises a physiotherapy box base 52 and a physiotherapy box upper cover 51 covered on the physiotherapy box base 52, and a filtering membrane can be selectively added into the physiotherapy box 5 according to the suggestion of a doctor, so that dust, bacteria and the like can be effectively filtered, and respiratory system medicines can be added for auxiliary treatment. When breathing in, the outside air enters the back along induction port 10, and gas can pass through physiotherapy box 5, and the air flows to suction nozzle 9 by the top opening of rotatory chamber 71 together with the medicine in physiotherapy box 5 and is inhaled by the human body, can play the effect of physiotherapy, and applicable crowd's scope is wider.

On the basis of the above embodiment, as a further preference, all the air holes 73 are arranged in the circumferential direction of the rotating chamber 71 to be sequentially increased or decreased. The axes of all the air holes 73 are arranged along different radiuses of the rotary cavity 71, and the axes of all the air holes 73 are in the same plane, so that the air holes 73 with different sizes can correspond to the air suction port 10 when the rotary cavity 71 is rotated. All the air holes 73 can be gradually increased or decreased along the clockwise or counterclockwise direction of the rotating chamber 71, and when the rotating chamber 71 is rotated clockwise or counterclockwise, the size of the air hole 73 corresponding to the air suction port 10 can be adjusted for easy operation.

On the basis of the above embodiment, as a further preferred, the fixed connection assembly 2 is disposed between the rotation adjustment assembly 8 and the bottom opening of the housing 1, the bottom outer periphery of the rotation rod 7 is provided with the annular boss 72, the annular boss 72 is rotatably disposed on the inner periphery of the fixed connection assembly 2, and the rotation adjustment assembly 8 is rotatably disposed on the outer periphery of the fixed connection assembly 2. Annular boss 72 sets up in the bottom upper portion of rotary rod 7, and rotation regulation subassembly 8 is connected with the bottom of rotary rod 7, and the periphery of interior week laminating in annular boss 72 of fixed connection subassembly 2 can guarantee that rotation regulation subassembly 8 is when rotating rotary rod 7, and the direction of rotation of rotary rod 7 is stable.

On the basis of the above embodiment, as a further preference, the fixing and connecting assembly 2 includes the fixing cylinder 27, the inner circumferential wall of the fixing cylinder 27 is provided with a downward annular step surface, the annular boss 72 is provided in the fixing cylinder 27 below the annular step surface, the upper portion of the annular boss 72 and the lower portion of the annular boss 72 are respectively provided with the axial limiting ring 22, the radial limiting ring 23 is provided between the outer circumference of the annular boss 72 and the inner wall of the fixing cylinder 27, and the bottom end surface of the fixing cylinder 27 is provided with the fixing ring 2525 for supporting the axial limiting ring 22 at the lower portion of the annular boss 72. Axial spacing ring 22 can restrict the axial motion of annular boss 72, and radial spacing ring 23 can restrict the radial motion of annular boss 72 to stability when further promoting annular boss 72 to rotate, gu fixed ring 2525 can dismantle with the bottom of fixed drum and be connected, so that the dismouting, gu fixed ring 2525 can guarantee the positional stability of axial spacing ring 22 and radial spacing ring 23, guarantee the positional stability of annular boss 72. Preferably, the fixing ring 2525 is coupled to the screw hole 213 of the bottom surface of the fixing cylinder 27 by the screw 24.

On the basis of the above embodiment, as a further preferable preference, the annular sleeve 21 is disposed on the outer periphery of the fixed cylinder 27, the upper end surface of the annular sleeve 21 is connected with the side surface of the fixed cylinder 27 through the annular plate 26, the rotation adjusting assembly 8 includes a knob 81, a spring 82 and a baffle ring 83, the spring 82 is disposed between the annular sleeve 21 and the fixed cylinder 27, the baffle ring 83 is disposed on the lower portion of the spring 82, the knob 81 is disposed on the lower portion of the baffle ring 83, the lower end surface of the baffle ring 83 is provided with a plurality of protruding blocks, the top end surface of the knob 81 is provided with clamping grooves 85 which are matched and clamped with the protruding blocks and are consistent with the gear number, all the clamping grooves 85 are in one-to-one correspondence with the positions of all the air holes 73, the outer periphery of the fixed cylinder 27 is provided with a plurality of first limiting grooves 211, the inner periphery of the baffle ring 83 is provided with first limiting protrusions which are matched with the first limiting grooves 211 and are consistent with the number, and the knob 81 is connected with the rotating rod 7 below the annular boss 72.

The upper end of the spring 82 abuts against the bottom surface of the annular plate 26, the lower end of the spring 82 abuts against the top surface of the stop ring 83, when the spring 82 is compressed or stretched, the stop ring 83 will move along the axial direction of the fixed cylinder 27, and both the spring 82 and the stop ring 83 can be movably arranged in the circular guide groove 214. The knob 81 is connected with the rotating rod 7 and can synchronously rotate, and the first limiting protrusion arranged on the inner periphery of the baffle ring 83 is clamped into the first limiting groove 211, so that the baffle ring 83 cannot rotate relative to the fixed cylinder 27.

During the regulation, the knob 81 rotates, the knob 81 drives the rotary rod 7 to rotate, adjust the air hole 73 just right with the induction port 10, the knob 81 is when rotating, the moment of torsion of draw-in groove 85 is used on the lug, preferably, the lug is the toper lug, the draw-in groove 85 is the toper draw-in groove 85, the lug can produce axial thrust, push out the lug draw-in groove 85, the spring 82 is compressed, along with the rotation of knob 81, the lug can correspond to block in the next draw-in groove 85, next air hole 73 just right to induction port 10 this moment, thereby accomplish the regulation of the resistance of breathing in, accord with user's operation custom more.

On the basis of the above embodiment, as a further preference, the center of the knob 81 is provided with the connecting bolt 84, the inner bottom surface of the knob 81 is provided with the circular groove 87 for accommodating the rotating rod 7 below the annular boss 72, the inner wall of the circular groove 87 is provided with the second limiting groove 86, and the outer periphery of the rotating rod 7 is provided with the second limiting protrusion which is clamped in the second limiting groove 86. The second limiting protrusion is clamped with a second limiting groove 86 in the center of the knob 81, so that the knob 81 can be driven to rotate synchronously with the rotating rod 7 when rotating, the knob 81 and the rotating rod 7 can be detachably connected through the connecting bolt 84, and the knob 81 is prevented from being separated from the rotating rod 7.

On the basis of the above embodiment, it is further preferable that the knob 81 is provided with numbers corresponding to the number of the first stopper grooves 211 on the outer circumference thereof, each number corresponding to the position of each air hole 73. The arrangement of the numbers can enable the gears to be more visual, the first gear can correspond to the air hole 73 with the maximum diameter or the air hole 73 with the minimum diameter, the subsequent air holes 73 correspond to the subsequent numbers one by one, when the first gear is opposite to the air suction port 10, the air hole 73 with the maximum diameter or the air hole 73 with the minimum diameter can be visually seen to be opposite to the air suction port 10, and when the gear is rotationally adjusted, the needed number corresponding to the air hole 73 can be rotated to be opposite to the air suction port 10.

In addition to the above embodiments, it is further preferable that a ventilation bracket is provided in the exhalation port, the one-way valve is a one-way membrane 6 which is provided at an upper portion of the ventilation bracket so as to be capable of being lifted, and the exhalation cap 3 which is ventilated is provided on the exhalation port. When breathing in, the one-way membrane 6 is pressed on the ventilation support to avoid ventilation of the exhalation port, and when breathing out, the one-way membrane 6 is jacked up by air to ventilate the ventilation support. Preferably, a plurality of first through holes are arranged on the exhalation cover 3 to ensure normal ventilation and protect the inner one-way membrane 6. Preferably, the suction port 10 is provided with a suction cover 4, and the suction cover 4 is provided with a plurality of second through holes.

In addition to the above embodiments, it is further preferable that the bottom of the respiratory training device housing 1 is provided with a protrusion, and the fixed barrel 2727 is screwed through the L-shaped groove 212.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The breathing training device provided by the utility model is introduced in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (10)

1. A breathing trainer, comprising: the breathing device comprises a shell (1), wherein a breathing cavity is arranged in the shell (1), a suction nozzle (9), an air suction port (10) and an exhalation port are arranged on the shell (1), and the suction nozzle (9), the air suction port (10) and the exhalation port are all communicated with the breathing cavity; the breathing port is provided with a one-way valve, an air flow adjusting assembly capable of adjusting the air inflow of the breathing port (10) is arranged in the breathing cavity, the lower part of the air flow adjusting assembly is provided with a resistance adjusting assembly which is used for driving the air flow adjusting assembly to move and has a plurality of gears, and the resistance adjusting assembly is arranged outside the shell (1).

2. The breathing training device of claim 1, wherein the air volume adjusting assembly comprises a rotating cavity (71) and a rotating rod (7), a plurality of air holes (73) with different sizes are formed in the side wall of the rotating cavity (71), all the air holes (73) are arranged along the circumferential direction of the rotating cavity (71), all the air holes (73) and the air suction port (10) are located at the same horizontal position, the top of the rotating cavity (71) is provided with a top opening, the top end of the rotating cavity (71) is lower than the suction nozzle (9) and the air exhalation port, the resistance adjusting assembly is a rotating adjusting assembly (8) with a plurality of gears, and the rotating adjusting assembly (8) is connected with the rotating rod (7).

3. Breathing training aid according to claim 2, characterised in that the top opening is provided with a ventilated physiotherapy box (5).

4. The breathing training device according to claim 2, wherein all the air holes (73) are arranged in a sequentially increasing or decreasing manner in the circumferential direction of the rotating chamber (71).

5. The breathing training device according to claim 2, wherein a fixing and connecting assembly (2) is arranged between the rotating adjusting assembly (8) and the bottom opening of the housing (1), an annular boss (72) is arranged on the bottom outer periphery of the rotating rod (7), the annular boss (72) is rotatably arranged on the inner periphery of the fixing and connecting assembly (2), and the rotating adjusting assembly (8) is rotatably arranged on the outer periphery of the fixing and connecting assembly (2).

6. The breathing training device according to claim 5, wherein the fixing and connecting assembly (2) comprises a fixing barrel body (27), the inner peripheral wall of the fixing barrel body (27) is provided with a downward annular step surface, the annular boss (72) is arranged in the fixing barrel body (27) below the annular step surface, the upper portion of the annular boss (72) and the lower portion of the annular boss (72) are respectively provided with an axial limiting ring (22), a radial limiting ring (23) is arranged between the periphery of the annular boss (72) and the inner wall of the fixing barrel body (27), and the bottom end face of the fixing barrel body (27) is provided with a fixing ring (25) for supporting the axial limiting ring (22) at the lower portion of the annular boss (72).

7. The breathing training device according to claim 6, wherein an annular sleeve (21) is arranged on the outer periphery of the fixed cylinder body (27), the upper end face of the annular sleeve (21) is connected with the side face of the fixed cylinder body (27) through an annular plate (26), the rotation adjusting assembly (8) comprises a knob (81), a spring (82) and a baffle ring (83), the spring (82) is arranged between the annular sleeve (21) and the fixed cylinder body (27), the baffle ring (83) is arranged on the lower portion of the spring (82), the knob (81) is arranged on the lower portion of the baffle ring (83), a plurality of protruding blocks are arranged on the lower end face of the baffle ring (83), the top end face of the knob (81) is provided with clamping grooves (85) which are matched with the protruding blocks in a clamped mode and are consistent in gear number, all the clamping grooves (85) correspond to the positions of all the air holes (73) in a one-to-one mode, a plurality of first limiting grooves (211) are arranged on the outer periphery of the fixed cylinder body (27), and first limiting grooves (211) which are matched with first limiting grooves (211) are arranged on the inner periphery of the baffle ring (83) and are connected with first limiting bosses (7).

8. The breathing training device according to claim 7, wherein a connecting bolt (84) is arranged at the center of the knob (81), a round groove (87) for accommodating the rotating rod (7) below the annular boss (72) is arranged on the inner bottom surface of the knob (81), a second limiting groove (86) is arranged on the inner wall of the round groove (87), and a second limiting protrusion clamped into the second limiting groove (86) is arranged on the periphery of the rotating rod (7).

9. The breathing training device as claimed in claim 8, wherein the knob (81) is provided at the outer circumference thereof with the number of numerals corresponding to the number of the first stopper grooves (211), each of the numerals corresponding to the position of each of the air holes (73).

10. Breathing training aid according to any of claims 1 to 9, wherein a ventilation bracket is arranged in the exhalation port, the one-way valve is a one-way membrane (6) which can be lifted and arranged on the upper part of the ventilation bracket, and a ventilated exhalation cover (3) is arranged on the exhalation port.

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