Oral-nasal breathing trainer

Abstract

The present application relates to the technical field of respiratory training equipment, in particular to a mouth-nose type respiratory training instrument, which comprises a shell and a blocking piece, the upper and lower sides of one end of the shell are respectively provided with a nose suction pipe and a mouth suction pipe, and the other end is provided with a ventilation pipe, the nose suction pipe and the mouth suction pipe are communicated with the ventilation pipe; the blocking piece is rotatably arranged in the shell, and a switching mechanism is arranged in the shell and used for driving the blocking piece to rotate so as to block one of the nose suction pipe and the mouth suction pipe; the automatic switching structure driven by mechanical airflow is used for driving the impeller to rotate by relying on the respiratory airflow itself, the blocking piece is automatically switched to block the position at the end of inhalation and exhalation by a transmission mechanism, the alternating breathing mode of nose inhalation and mouth exhalation is realized, and the breathing cycle scheme recommended by a psychological therapist is matched.

Description

Technical Field

[0001] This invention relates to the field of breathing training equipment technology, specifically to a mouth-nose breathing training device. Background Technology

[0002] Anxiety disorders are among the most prevalent mental health problems in contemporary society. During an anxiety attack, patients often experience physiological reactions such as rapid breathing, increased heart rate, and abnormal excitation of the sympathetic nervous system. If not intervened in time, it may further develop into panic attacks, seriously affecting physical and mental health.

[0003] Clinical psychology research shows that rhythmic breathing training is an effective non-pharmacological intervention for relieving acute anxiety. The "nasal inhalation, mouth exhalation" breathing pattern, combined with prolonged exhalation, effectively activates the vagus nerve, increases heart rate variability (HRV), and prompts the autonomic nervous system to shift from a sympathetic state to a parasympathetic dominant state, thereby quickly calming anxiety. Psychotherapists typically recommend specific breathing cycle protocols to patients, requiring them to train according to the inhalation-exhalation duration ratio.

[0004] In the prior art, breathing training devices are mainly electronic intelligent breathing trainers, which detect breathing status through sensors. For example, the existing publicly available technology CN223096076U oral-nasal separation breathing training system detects the trainee's breathing mode in real time through a breathing detection unit and adjusts the configuration of the ventilation tubing to achieve targeted breathing training. Such devices rely on power supplies and electronic components, have complex structures, and are costly. Therefore, we provide an oral-nasal breathing trainer to solve the above problems. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention proposes a mouth and nose breathing training device to solve the technical problems mentioned in the background art.

[0006] The technical solution adopted in this invention is a mouth-nose breathing training device, including a shell and a sealing component. The shell has a nasal cannula and an oral exhalation tube installed on the upper and lower sides of one end, respectively, and a ventilation tube provided at the other end. Both the nasal cannula and the oral exhalation tube are connected to the ventilation tube. The occlusion element is rotatably disposed inside the housing, and the housing is equipped with a switching mechanism for driving the occlusion element to rotate so as to occlude one of the nasal cannula and the oral cannula.

[0007] In a preferred embodiment, the switching mechanism includes an impeller assembly and a transmission assembly. The impeller assembly is rotatably mounted inside the housing. The gas flow in the vent pipe can drive the impeller assembly to rotate. The impeller assembly and the sealing member are connected by the transmission assembly.

[0008] In a preferred embodiment, the transmission assembly includes a pinion, a gear, and a rotating component. The pinion is connected to the end of the impeller assembly's shaft, the gear is connected to the end of the sealing component's shaft, and the pinion and gear mesh with each other. The gear has an arc-shaped groove, and the rotating component is mounted on the housing and located within the arc-shaped groove. The rotating component is used to drive the shaft of the sealing component to rotate.

[0009] In a preferred embodiment, the rotating component includes a cylinder, a push rod, a circular block, and a hinge rod. The cylinder is fixed to the housing and is coaxially arranged with the rotating shaft of the sealing component. The push rod is slidably installed inside the cylinder along the radial direction, and both ends slide through the cylinder. The end of the push rod abuts against the side wall of the arc-shaped groove. The circular block is slidably installed inside the cylinder along the axis of the cylinder. One end of the hinge rod is hinged to the middle of the push rod, and the other end is hinged to the end of the circular block. The sealing component has a circular groove at the end of its rotating shaft, the circular block is located in the circular groove, the side wall of the circular groove has a spiral groove, and the circular block is equipped with a guide block located in the spiral groove.

[0010] In a preferred embodiment, an abutment block is slidably installed in the arc-shaped groove, and the large gear is equipped with an adjustment component for adjusting the position of the abutment block.

[0011] In a preferred embodiment, the adjusting assembly includes a knob and a connecting rod. The knob is rotatably mounted at the center of the large gear. The knob is connected to the abutment block via the connecting rod. A locking element is provided between the knob and the large gear.

[0012] In a preferred embodiment, the locking element includes two sets of sliders, two sets of buttons, two sets of friction blocks, and a spring. The large gear has a mounting groove at its center, and the knob is rotatably mounted in the mounting groove. The knob has a sliding groove in its middle, and the two sets of sliders are symmetrically slidably mounted in the sliding groove. The two sets of buttons are respectively mounted at the ends of the two sets of sliders that extend out of the mounting groove. The two sets of friction blocks are respectively mounted at the ends of the two sets of sliders that extend into the mounting groove. The sidewall of the mounting groove is provided with a friction ring that matches the friction block, and the spring is located between the two sets of sliders.

[0013] In a preferred embodiment, the housing is fitted with a protective shell located outside the pinion and gear, the protective shell sidewall is provided with a position mark, and the connecting rod is fitted with an indicator needle for indicating the position mark.

[0014] In a preferred embodiment, the nasal cannula and the oral exhalation tube are respectively connected to a nasal plug and an exhalation mask.

[0015] In a preferred embodiment, the housing is further provided with a resistance adjustment mechanism for adjusting the rotational resistance of the impeller assembly.

[0016] As can be seen from the above technical solution, the beneficial technical effects of the present invention are as follows: 1. This invention adopts an automatic switching structure driven by mechanical airflow. It relies on the breathing airflow itself to drive the impeller to rotate, and through the transmission mechanism, it drives the sealing component to automatically switch the sealing position at the end of inhalation and exhalation, realizing an alternating breathing mode of nasal inhalation and oral exhalation. This improves portability and reliability of use, and can match the breathing cycle program recommended by psychotherapists.

[0017] 2. This invention converts the cumulative flow of respiratory airflow into the switching action of the occlusion component, realizing rhythmic control based on respiratory volume. After the patient inhales to the set volume, it automatically switches to the expiratory mode, and after the patient exhales to the set volume, it automatically switches back to the inspiratory mode, thereby matching the respiratory cycle plan recommended by the psychotherapist. With the adjustable abutment block structure, the respiratory volume threshold can be flexibly adjusted to adapt to the personalized needs of different patients and different training stages, combining the standardization and flexibility of training. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is a schematic diagram of the oral-nasal breathing training device of the present invention; Figure 2 This is an exploded view of the oral-nasal breathing training device of the present invention. Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the structure of the present invention in the working state of exhalation training; Figure 5 This is a schematic diagram of the structure of the present invention in the inhalation training working state; Figure 6 This is a schematic cross-sectional view of the oral-nasal breathing training device of the present invention. Figure 1 ; Figure 7 for Figure 6 Enlarged structural diagram at point B; Figure 8 This is a schematic cross-sectional view of the oral-nasal breathing training device of the present invention. Figure 2 ; Figure 9 for Figure 8 Enlarged schematic diagram of the structure at point C.

[0020] Figure label: 1-Housing, 11-Nasal cannula, 111-Nasal plug, 12-Mouth exhalation cannula, 121-Exhalation mask, 13-Ventilation tube, 14-Protective shell, 141-Position indicator; 2-Blocking component, 21-Impeller assembly, 22-Pinary gear, 23-Major gear, 231-Mounting groove, 232-Friction ring, 24-Arc groove, 25-Cylinder body, 26-Top rod, 27-Circular block, 271-Guide block, 28-Hinged rod, 29-Circular groove, 291-Spiral groove; 3-Abutting block, 31-Knob, 311-Slide groove, 32-Connecting rod, 321-Indicator needle, 33-Slider, 34-Button, 35-Friction block, 36-Spring, 4-Resistance adjustment mechanism. Detailed Implementation

[0021] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0022] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0023] Example 1: like Figure 1-9 As shown, this embodiment provides a mouth-nose breathing training device, including: The shell 1 has a nasal cannula 11 and an oral exhalation tube 12 installed on the upper and lower sides of one end, and a ventilation tube 13 provided at the other end. Both the nasal cannula 11 and the oral exhalation tube 12 are connected to the ventilation tube 13. The blocking component 2 is rotatably disposed inside the housing 1. The housing 1 is equipped with a switching mechanism, which drives the blocking component 2 to rotate so as to block one of the nasal cannula 11 and the oral cannula 12.

[0024] The housing 1 has a streamlined grip structure with a non-slip texture on the surface for easy handling by the patient. The nasal cannula 11 is located on the upper side of the end of the housing 1, facing the patient's nose, while the oral exhalation tube 12 is located on the lower side of the end of the housing 1, facing the patient's mouth. This ensures that the nose is aligned with the nasal cannula 11 and the mouth with the oral exhalation tube 12 during use, allowing for simultaneous connection of both the nasal and oral channels. The ventilation tube 13 is located at the other end of the housing 1, serving as a common airway connecting the patient to the outside atmosphere during inhalation and exhalation.

[0025] In other implementations, the housing 1 may be equipped with straps for easy wearing on the patient's head.

[0026] The sealing element 2 is a fan-shaped baffle structure, which is rotatably installed at the airway junction inside the housing 1. By rotating, it can selectively block the inner port of the nasal cannula 11 or the inner port of the oral cannula 12.

[0027] When the occluder 2 blocks the oral exhalation tube 12, the patient can only inhale through the nasal inhalation tube 11; when the occluder 2 blocks the nasal inhalation tube 11, the patient can only exhale through the oral exhalation tube 12, thereby guiding the patient to achieve a "nasal inhalation and oral exhalation" breathing pattern.

[0028] The switching mechanism includes an impeller assembly 21 and a transmission assembly. The impeller assembly 21 is rotatably mounted near the vent pipe 13 inside the housing 1. The gas flow in the vent pipe 13 drives the impeller assembly 21 to rotate. The impeller assembly 21 is connected to the sealing member 2 via the transmission assembly. The impeller assembly 21 includes an impeller shaft and multiple impeller blades distributed circumferentially. When the airflow passes through, it drives the blades to rotate, converting the kinetic energy of the breathing airflow into rotational mechanical energy.

[0029] When the patient inhales, outside air enters the housing 1 through the ventilation tube 13 and then enters the patient's body through the nasal cannula 11. The airflow direction drives the impeller assembly 21 to rotate clockwise. When the patient exhales, the patient blows air into the housing 1 through the oral exhalation tube 12 and then expels it to the outside through the ventilation tube 13. The airflow direction drives the impeller assembly 21 to rotate counterclockwise. Since the impeller assembly 21 and the sealing element 2 are connected by a transmission assembly, the forward and reverse rotation of the impeller assembly 21 can drive the sealing element 2 to automatically switch the sealing position at the end of inhalation and exhalation through the transmission assembly, realizing automatic alternation of breathing modes.

[0030] The transmission assembly includes a pinion 22, a gear 23, and a rotating component. The pinion 22 is fixedly connected to the end of the shaft of the impeller assembly 21, and the gear 23 is coaxially arranged with the end of the shaft of the occlusion component 2, with the pinion 22 and the gear 23 meshing with each other. The pinion 22 and the gear 23 form a reduction gear set, which reduces the high-speed rotation of the impeller assembly 21 and transmits it to the gear 23, causing the gear 23 to rotate at a slower angular velocity. This ensures that the patient needs to accumulate sufficient respiratory volume to trigger an occlusion switch, achieving rhythmic control based on respiratory volume.

[0031] An arc-shaped groove 24 is formed on the end face of the large gear 23, extending at a certain angle along the circumference of the large gear 23. A rotating component is mounted on the housing 1 and located within the arc-shaped groove 24. The rotating component is used to drive the shaft of the sealing component 2 to rotate. During the rotation of the large gear 23, when the end of the arc-shaped groove 24 has not yet touched the rotating component, the large gear 23 continues to rotate, and the sealing component 2 maintains its current sealing state. When the end of the arc-shaped groove 24 moves to the position of the rotating component and comes into contact with it, continued rotation will trigger the rotating component to rotate, causing the shaft of the sealing component 2 to rotate at a certain angle, thus completing the switching of the sealing position.

[0032] The rotating component includes a cylinder 25, a push rod 26, a circular block 27, and a hinge rod 28. The cylinder 25 is fixed to the inner wall of the housing 1 and is coaxially arranged with the rotating shaft of the sealing component 2; the push rod 26 is slidably installed inside the cylinder 25 along the radial direction, and both ends of the push rod 26 slide through the side wall of the cylinder 25, with the outer end of the push rod 26 abutting against the side wall of the arc groove 24; the circular block 27 is slidably installed inside the cylinder 25 along the axial direction; one end of the hinge rod 28 is hinged to the middle of the push rod 26, and the other end is hinged to the end of the circular block 27.

[0033] The end of the rotating shaft of the sealing component 2 has a circular groove 29, and a circular block 27 is located in the circular groove 29. The side wall of the circular groove 29 has a spiral groove 291, and a guide block 271 located in the spiral groove 291 is installed on the side of the circular block 27. The spiral groove 291 extends spirally along the circumference of the circular groove 29. When the circular block 27 slides axially, the guide block 271 moves along the spiral groove 291, converting the axial movement into the rotational movement of the rotating shaft of the sealing component 2.

[0034] In the initial state, the sealing element 2 blocks the nasal cannula 11. At this time, the cylinder 25 is located at one end of the arc-shaped groove 24, and one end of the push rod 26 extends out of the cylinder 25 and abuts against the side wall of that end of the arc-shaped groove 24. When the patient exhales, the airflow drives the impeller assembly 21 to rotate counterclockwise, which in turn drives the large gear 23 to rotate slowly clockwise through the small gear 22. When the large gear 23 rotates, the cylinder 25 remains fixed, that is, it slides along the groove relative to the arc-shaped groove 24. During this process, the sealing element 2 maintains the state of blocking the nasal cannula 11, and the patient continues to exhale through the oral exhalation tube 12.

[0035] When the large gear 23 rotates to the point where the other end of the arc-shaped groove 24 contacts the cylinder 25, the end wall of the arc-shaped groove 24 pushes the push rod 26 to slide inward along the radial direction of the cylinder 25. The push rod 26 pushes the circular block 27 to slide axially within the cylinder 25 via the hinge rod 28. At the same time as the circular block 27 slides axially, the guide block 271 slides within the spiral groove 291. Due to the guiding effect of the spiral groove 291, the shaft of the sealing member 2 rotates, causing the sealing member 2 to rotate and switch to the position of the sealing port exhalation tube 12. At this time, the patient can no longer exhale air, the exhalation phase ends, and it automatically switches to the inhalation phase. The other end of the push rod 26 extends out of the cylinder 25 and is located within the arc-shaped groove 24.

[0036] When the patient begins to inhale, the airflow causes the impeller assembly 21 to rotate clockwise, while the large gear 23 rotates slowly counterclockwise. Once the end of the arc-shaped groove 24 contacts the cylinder 25 again, it pushes the push rod 26 to slide in the opposite direction, causing the circular block 27 to slide axially in the opposite direction, which in turn causes the sealing component 2 to rotate in the opposite direction, switching back to the state of sealing the nasal cannula 11. This cycle repeats continuously, achieving automatic alternation between inhalation and exhalation.

[0037] An abutment block 3 is slidably installed within the arc-shaped groove 24, and an adjustment component for adjusting the position of the abutment block 3 is installed on the large gear 23. The abutment block 3 can slide within the arc-shaped groove 24, and its position within the arc-shaped groove 24 can be adjusted by the adjustment component.

[0038] The abutment block 3 is used to change the effective travel of the cylinder 25 within the arc-shaped groove 24, that is, to change the angle of rotation required for the large gear 23 to switch from triggering at one end to triggering at the other end: Depending on the patient's needs, if it is necessary to reduce the inspiratory and expiratory volumes, the position of the abutment block 3 can be adjusted by changing the component to reduce the effective travel of the cylinder 25; if it is necessary to increase the inspiratory and expiratory volumes, the position of the abutment block 3 can be adjusted by changing the component to increase the effective travel of the cylinder 25. This structure allows for flexible adjustment of the volume threshold of a single breath, thereby adapting to different respiratory cycle protocols.

[0039] The adjustment assembly includes a knob 31 and a connecting rod 32. The knob 31 is rotatably mounted at the center of the large gear 23, and is fixedly connected to the abutment block 3 via the connecting rod 32. Rotating the knob 31 causes the abutment block 3 to slide along the arc-shaped groove 24 via the connecting rod 32, changing its position within the arc-shaped groove 24. A locking element is provided between the knob 31 and the large gear 23 to fix the knob 31 and the large gear 23 relative to each other after adjustment, preventing the position of the abutment block 3 from shifting during training.

[0040] The locking mechanism includes two sets of sliders 33, two sets of buttons 34, two sets of friction blocks 35, and a spring 36. A mounting groove 231 is formed at the center of the large gear 23, and the knob 31 is rotatably mounted within the mounting groove 231. A radial groove 311 is formed in the center of the knob 31, and the two sets of sliders 33 are symmetrically slidably mounted within the groove 311. The two sets of buttons 34 are respectively mounted on the outer ends of the two sets of sliders 33 extending out of the mounting groove 231, and the two sets of friction blocks 35 are respectively mounted on the inner ends of the two sets of sliders 33 extending into the mounting groove 231. A friction ring 232 matching the friction block 35 is provided on the side wall of the mounting groove 231; the friction ring 232 is an annular friction surface. The spring 36 is positioned between the two sets of sliders 33, providing a spring force that keeps the two sets of sliders 33 moving away from each other.

[0041] In the initial state, the initial elastic force of spring 36 pushes the two sets of sliders 33 away from each other, so that the friction block 35 and the friction ring 232 are in close contact. At this time, the knob 31 and the large gear 23 are relatively fixed. The rotation of the large gear 23 can drive the knob 31, the connecting rod 32 and the contact block 3 to rotate synchronously. When adjusting the position of the contact block 3 in the arc groove 24, the medical staff or the patient presses the two buttons 34 with two fingers, so that the two sets of sliders 33 move relative to each other. The two sets of friction blocks 35 move relative to each other and away from the friction ring 232. At this time, the knob 31 can rotate freely relative to the large gear 23. After rotating the knob 31, the contact block 3 is slid in the arc groove 24 to the target position through the connecting rod 32. After releasing the finger, the elastic force of spring 36 pushes the friction block 35 to contact the friction ring 232 again, realizing the relative locking of the knob 31 and the large gear 23, and fixing the contact block 3 on the large gear 23.

[0042] The housing 1 is fitted with a protective shell 14 located outside the pinion 22 and the gear 23, which protects the gear transmission mechanism. A position indicator 141 is provided on the side wall of the protective shell 14, and an indicator needle 321 is mounted on the connecting rod 32 to indicate the position indicator 141. When the connecting rod 32 drives the abutment block 3 to rotate, the indicator needle 321 rotates synchronously. The current position of the abutment block 3 can be visually read through the position indicator 141, corresponding to different respiratory volume settings, allowing the patient to quickly adjust to the target setting according to the treatment plan.

[0043] The nasal cannula 11 and the oral exhalation tube 12 are respectively connected to a nasal plug 111 and an exhalation mask 121. The nasal plug 111 is made of medical-grade soft silicone and forms a seal after being inserted into the nostril, ensuring that all airflow enters through the nasal cannula 11 during inhalation. The exhalation mask 121 is a mask structure that conforms to the contour of the lips, covering the patient's mouth and ensuring that all airflow is expelled through the oral exhalation tube 12 during exhalation. The detachable connection design facilitates the replacement of different sizes of nasal plugs 111 and exhalation masks 121 to fit patients with different face sizes, and also facilitates cleaning, disinfection, and disposable replacement, ensuring hygiene during use.

[0044] The complete working process of this embodiment is described in detail below: Before use, the patient (in this example, the patient is a university student) adjusts the breathing volume setting according to the breathing plan recommended by the psychotherapist: press the buttons 34 on both sides of the knob 31 with two fingers to release the lock, rotate the knob 31 to move the abutment block 3 along the arc groove 24, observe the correspondence between the indicator needle 321 and the position mark 141, and release the button to complete the locking after adjusting to the target setting. Insert the nasal plug 111 into the nostril, cover the mouth with the exhalation mask 121, and hold the housing 1 in a comfortable position.

[0045] In the initial state, the occluder 2 blocks the nasal cannula 11, and the patient begins exhaling through the oral exhalation tube 12. The expiratory airflow is discharged through the ventilation tube 13, driving the impeller assembly 21 to rotate counterclockwise. After being slowed down by the pinion gear 22, it drives the large gear 23 to rotate slowly clockwise. During this stage, the occluder 2 remains in the state of blocking the nasal cannula 11. When the large gear 23 rotates to the point where the end wall of the arc-shaped groove 24 pushes the push rod 26 to move, the rotating component is triggered, and the occluder 2 rotates to switch to the position of blocking the oral exhalation tube 12, ending the exhalation phase.

[0046] The patient then naturally begins inhalation, with outside air entering through the ventilation tube 13 and being drawn into the body through the nasal cannula 11. The inhaled airflow drives the impeller assembly 21 to rotate clockwise, while the large gear 23 rotates slowly counterclockwise. During this phase, the occluder 2 remains in the position of blocking the nasal cannula 12. When the large gear 23 rotates to the other end of the arc-shaped groove 24, pushing the push rod 26 in the opposite direction, the occluder 2 switches back to the position of blocking the nasal cannula 11, ending the inhalation phase and entering the next round of exhalation.

[0047] This cycle repeats automatically, forcing the patient to perform alternating nasal and oral inhalation according to a set breathing volume. This automatically matches the patient's breathing cycle to the rhythm recommended by psychotherapy, eliminating the need for conscious control of breathing rhythm. It is particularly suitable for patients who have difficulty concentrating in an anxious state. By prolonging the expiratory duration and activating the vagus nerve, it gradually calms the autonomic nervous system, alleviating acute anxiety symptoms.

[0048] Example 2: As a further improvement to the above-mentioned device, in order to enhance the muscle endurance training effect of breathing exercises and enrich the dimensions of breathing resistance regulation, the following improvements are made: The housing 1 is also provided with a resistance adjustment mechanism 4 for adjusting the rotational resistance of the impeller assembly 21. In this embodiment, the resistance adjustment mechanism 4 adopts conventional frictional resistance adjustment, such as the resistance adjustment structure in a breathing trainer disclosed in CN221432077U. This resistance adjustment mechanism is a conventional technical means in the prior art, so it will not be described in detail here.

[0049] When the frictional resistance is increased, the airflow pressure required for the impeller assembly 21 to rotate increases, requiring the patient to exert greater respiratory muscle strength to drive the impeller, thus enhancing the muscle endurance training effect of breathing exercises. When the frictional resistance is decreased, the rotational resistance of the impeller assembly 21 decreases, and breathing exercises focus more on rhythm guidance, making it suitable for beginners or during acute anxiety attacks. Through the coordination of the resistance adjustment mechanism and the volume adjustment mechanism, dual regulation of respiratory rhythm and respiratory resistance can be achieved, meeting the needs of all scenarios from anxiety emergency care to respiratory muscle strengthening training.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions 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, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A mouth-nose breathing training device, characterized in that, include: The shell (1) has a nasal cannula (11) and an oral exhalation tube (12) installed on the upper and lower sides of one end, and a ventilation tube (13) provided at the other end. The nasal cannula (11) and the oral exhalation tube (12) are both connected to the ventilation tube (13). The sealing element (2) is rotatably disposed inside the housing (1), and the housing (1) is provided with a switching mechanism for driving the sealing element (2) to rotate so as to seal one of the nasal cannula (11) and the oral cannula (12).

2. The oral-nasal breathing training device according to claim 1, characterized in that, The switching mechanism includes an impeller assembly (21) and a transmission assembly. The impeller assembly (21) is rotatably installed inside the housing (1). The gas flow in the vent pipe (13) can drive the impeller assembly (21) to rotate. The impeller assembly (21) and the sealing member (2) are connected by the transmission assembly.

3. The oral-nasal breathing training device according to claim 2, characterized in that, The transmission assembly includes a pinion (22), a gear (23), and a rotating component. The pinion (22) is connected to the shaft end of the impeller assembly (21), and the gear (23) is connected to the shaft end of the sealing component (2). The pinion (22) and the gear (23) mesh with each other. The gear (23) has an arc-shaped groove (24). The rotating component is mounted on the housing (1) and located in the arc-shaped groove (24). The rotating component is used to drive the shaft of the sealing component (2) to rotate.

4. The oral-nasal breathing training device according to claim 3, characterized in that, The rotating component includes a cylinder (25), a top rod (26), a circular block (27), and a hinge rod (28). The cylinder (25) is fixed on the housing (1) and is coaxially arranged with the rotating shaft of the sealing component (2). The top rod (26) is slidably installed in the cylinder (25) along the radial direction of the cylinder (25), and both ends slide through the cylinder (25). The end of the top rod (26) abuts against the side wall of the arc groove (24). The circular block (27) is slidably installed in the cylinder (25) along the axis of the cylinder (25). One end of the hinge rod (28) is hinged to the middle of the top rod (26), and the other end is hinged to the end of the circular block (27). The sealing component (2) has a circular groove (29) at the end of its rotating shaft. The circular block (27) is located in the circular groove (29). The side wall of the circular groove (29) has a spiral groove (291). The circular block (27) is equipped with a guide block (271) located in the spiral groove (291).

5. The oral-nasal breathing training device according to claim 4, characterized in that, An abutment block (3) is slidably installed in the arc groove (24), and an adjustment component for adjusting the position of the abutment block (3) is installed on the large gear (23).

6. The oral-nasal breathing training device according to claim 5, characterized in that, The adjustment assembly includes a knob (31) and a connecting rod (32). The knob (31) is rotatably mounted at the center of the large gear (23). The knob (31) is connected to the abutment block (3) through the connecting rod (32). A locking element is provided between the knob (31) and the large gear (23).

7. The oral-nasal breathing training device according to claim 6, characterized in that, The locking component includes two sets of sliders (33), two sets of buttons (34), two sets of friction blocks (35), and a spring (36). The center of the large gear (23) is provided with an installation groove (231). The knob (31) is rotatably installed in the installation groove (231). The middle part of the knob (31) is provided with a sliding groove (311). The two sets of sliders (33) are symmetrically slidably installed in the sliding groove (311). The two sets of buttons (34) are respectively installed at one end of the two sets of sliders (33) extending out of the installation groove (231). The two sets of friction blocks (35) are respectively installed at one end of the two sets of sliders (33) extending into the installation groove (231). The side wall of the installation groove (231) is provided with a friction ring (232) that matches the friction block (35). The spring (36) is located between the two sets of sliders (33).

8. The oral-nasal breathing training device according to claim 6, characterized in that, The housing (1) is equipped with a protective shell (14) located outside the pinion (22) and the gear (23). The protective shell (14) has a position mark (141) on its side wall. The connecting rod (32) is equipped with an indicator needle (321) for indicating the position mark (141).

9. The oral-nasal breathing training device according to claim 1, characterized in that, The nasal cannula (11) and the oral cannula (12) are respectively connected to a nasal plug (111) and an exhalation mask (121).

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