Ventilation tube fixation assembly and breathing machine

Abstract

The application discloses a tracheal tube fixing assembly, characterized in that the tracheal tube fixing assembly comprises a connecting cylinder (6.2) and a plate component (6.5), the plate component (6.5) is fixedly connected to the outer periphery of one end of the connecting cylinder (6.2), and the plane where the plate component (6.5) is located is perpendicular to the axial direction of the connecting cylinder (6.2); the surface of the plate component (6.5) is provided with a limiting piece (6.6), and the limiting piece (6.6) is located on the side of the plate component (6.5) which is away from the connecting cylinder (6.2). The application also relates to a breathing machine. The application is simple to use and convenient to operate, can effectively protect the air outlet of the breathing machine, and prevents the air outlet and other pipelines such as an internal water tank of the breathing machine from being polluted by external dust and bacteria.

Description

TECHNICAL FIELD

[0001] The present application relates to a ventilation tube fixing assembly and a breathing machine, and belongs to the technical field of household breathing machine applications. BACKGROUND

[0002] As a breathing assisting device, breathing machines have been increasingly used in households. Referring to the working mode of a breathing machine as shown in the figure, a turbo fan assembly 3 in the breathing machine sucks in external air for pressurization, and the pressurized air is blown out through an air outlet of the breathing machine after passing through a water tank 5 of the breathing machine. When in use, a user installs a ventilation tube 8 on the air outlet of the breathing machine, and the ventilation tube is connected to a face mask 10, so that the user can breathe in the pressurized air output from the breathing machine through the face mask 10 to assist the user in breathing. Figure 1

[0003] The air outlet (air outlet tube) of the existing breathing machine protrudes out of the breathing machine shell, such as the breathing machine disclosed in the design patent with the publication number CN306453142S. The advantage of this arrangement is that it is convenient for the user to insert the ventilation tube into the air outlet and to detach the ventilation tube from the air outlet. However, the disadvantage of this arrangement is that the air outlet is directly exposed to the air and lacks protection. When the breathing machine is stored, its air outlet is extremely easy to be contaminated by dust, bacteria or other foreign matters such as pet hair in the environment. When the user uses the breathing machine with the contaminated air outlet, the contaminants will be delivered to the face mask by the pressurized air and enter the respiratory tract of the user, causing discomfort to the user, and even causing respiratory tract or lung infection.

[0004] The utility model patent with the publication number CN207445309U discloses a protection device for the air outlet of a non-invasive breathing machine, but this scheme is only applicable to the breathing machine described in the specification and cannot be applied to other household breathing machines. Moreover, the device needs to be manually removed and installed when in use, which is inconvenient to operate.

[0005] The air outlet (air outlet tube) of the existing breathing machine is directly fixed to the shell and protrudes out of the shell, and the ventilation tube is directly inserted into the air outlet when in use. The air outlet is fixedly connected to the shell and is not provided with a cover for protecting the air outlet. Moreover, the air outlet cannot be used as a triggering component for triggering the action of the cover. SUMMARY

[0006] In order to overcome the problems in the prior art, the present application provides a ventilation tube fixing assembly which is applicable to a breathing machine provided with a protective cover and is used as a triggering component of the protective cover. The specific technical scheme is as follows.

[0007] ​The ventilation tube fixing assembly is characterized in that it comprises a connecting cylinder and a plate component, the plate component is fixedly connected to the outer periphery of one end of the connecting cylinder, and the plane of the plate component is perpendicular to the axial direction of the connecting cylinder; the surface of the plate component is provided with a limiting piece, and the limiting piece is located on the side of the plate component away from the connecting cylinder.

[0008] The ventilation tube fixing assembly is used to connect and fix the ventilation tube, when the user inserts the ventilation tube into the inside of the connecting cylinder, the plate component will be subjected to an external force perpendicular to the plate surface, the plate component will be elastically deformed and concave, and correspondingly, the limiting piece will be displaced along with the elastic deformation of the plate component, so as to release the position limitation on the sliding protective cover, which is beneficial to realize the automatic closing of the protective cover (which will be described in detail below), that is, the ventilation tube fixing assembly not only serves to connect the ventilation tube, but also serves as a trigger component for the movement of the protective cover.

[0009] Further, the plate component is provided with a positioning protrusion at both ends, and the positioning protrusion and the limiting piece are located on the same side surface of the plate component. When the ventilation tube fixing assembly is fixed to the shell, the extension height of the positioning protrusion towards the shell is greater than the thickness of the protective cover, so as to ensure that the protective cover can slide in the gap between the shell and the plate component.

[0010] Further, the ventilation tube fixing assembly further comprises a central connecting pipe located in the connecting cylinder, the central connecting pipe is coaxially arranged with the connecting cylinder, and the connecting cylinder and the central connecting pipe have a gap therebetween; and the end of the central connecting pipe away from the limiting piece is fixedly connected with the connecting cylinder, and the end of the central connecting pipe close to the limiting piece does not protrude from the plate component.

[0011] Preferably, the side of the limiting piece close to the connecting cylinder has an inclined surface.

[0012] Based on the same inventive concept, the present application also relates to a breathing machine, which comprises a breathing machine body and a ventilation tube, the breathing machine body comprises a fan and an air outlet assembly, the fan is provided with a fan air inlet and a fan air outlet, the air outlet assembly is in communication with the air outlet and is used to connect the ventilation tube, and the breathing machine is characterized in that:

[0013] The breathing machine body further comprises a shell, an elastic piece and a bearing piece located in the shell, the air outlet assembly is arranged on the bearing piece and located in the shell, and the shell is provided with an opening corresponding to the air outlet assembly;

[0014] The shell and the bearing piece are slidably provided with a protective cover;

[0015] The bearing piece is provided with a limiting piece, and the protective cover can be limited by the limiting piece when the protective cover is opened;

[0016] When the ventilation tube is connected to the air outlet assembly, the carrier is pressed down, and the carrier is elastically deformed so that the limiting member releases the protection cover;

[0017] When the ventilation tube is separated from the air outlet assembly, the protection cover is closed under the action of the elastic member to shield the air outlet assembly.

[0018] The technical scheme breaks the conventional setting mode that the air outlet assembly protrudes from the shell, and sets the air outlet assembly in the interior of the shell and cooperates with the sliding protection cover, thereby providing reliable protection for the air outlet assembly when the breathing machine is not used, and preventing foreign matters from entering the air outlet assembly. When the protection cover is in the second position (open state), the ventilation tube can be connected to the air outlet assembly through the opening of the shell, and in the process of inserting the ventilation tube into the air outlet assembly, the plate member is elastically deformed so that the limiting member moves and is separated from the protection cover, and the protection cover is abutted against the ventilation tube under the action of the elastic member. After use, the protection cover is automatically restored to the first position (closed state) under the action of the elastic member after the ventilation tube is removed. The plate member and the shell form a containing space of the protection cover, and limit the sliding range of the protection cover. The elastic member can apply elastic force to the protection cover to restore it to the closed state, and when the breathing machine is not used, the elastic member can ensure that the protection cover is always in the first position (closed state), that is, the state that the protection cover shields (closes) the opening of the shell.

[0019] Further, one end of the elastic member is connected to the protection cover (7), and the other end is connected to the shell or the carrier.

[0020] Further, the carrier is a plate member, the air outlet assembly includes a connecting cylinder, the plate member is fixedly connected to the outer periphery of one end of the connecting cylinder, and the plane where the plate member is located is perpendicular to the axial direction of the connecting cylinder; the surface of the plate member is provided with a limiting member, and the limiting member is located on the side of the plate member away from the connecting cylinder.

[0021] Further, the air outlet assembly further includes a central connecting tube located in the connecting cylinder, the central connecting tube is coaxially arranged with the connecting cylinder, and the connecting cylinder and the central connecting tube have a gap therebetween; and one end of the central connecting tube away from the limiting member is fixedly connected to the connecting cylinder, and one end of the central connecting tube close to the limiting member does not protrude from the plate member. Preferably, the side of the limiting member close to the connecting cylinder has an inclined surface.

[0022] Further, the shell is provided with a clasp, one end of the plate member is clamped into the clasp, and the other end of the plate member is fixed to the shell by a fastener. With this fixing mode, the tracheal tube fixing assembly can be quickly fixed to the shell, and the tracheal tube fixing assembly can be accurately positioned on the shell. More advantageously, only one end of the plate member is fixed by a fastener, and the other end is clamped to the clasp. The end of the plate member clamped to the clasp is equivalent to a free end. When the plate member is subjected to pressure perpendicular to the plane of the plate member, the end of the plate member clamped to the clasp can be slightly displaced, which makes the plate member more easily elastically deformed.

[0023] Further, the carrier and / or the shell is provided with a guide member for guiding the sliding of the protective cover. By providing a guide member, it can be ensured that the protective cover slides in a predetermined direction, preventing the protective cover from shaking or falling off. Preferably, the guide member comprises a guide strip provided on the plate member and / or the shell.

[0024] Further, the protective cover is provided with a guide protrusion, and the plate member is provided with a corresponding guide groove. The guide groove not only plays a role in guiding the sliding of the protective cover, but also more advantageously increases the elasticity of the plate member, making the plate member more easily deformed in the axial direction of the connecting cylinder.

[0025] Further, the inner surface of the protective cover is provided with a recess corresponding to the limiting member. The provision of the recess can reduce the mutual interference between the protective cover and the limiting member during sliding as much as possible. The inner surface refers to the surface facing the carrier.

[0026] Further, the inner surface of the protective cover is further provided with a positioning groove, and when the protective cover is in an open state, the limiting member abuts against the side wall of the positioning groove. By providing the positioning groove, the limiting member does not necessarily abut against the edge of the protective cover, which can more freely set the position of the limiting member, and is particularly advantageous for setting the limiting member at a position where the plate member deforms more, such as the middle position between the end of the plate member and the connecting cylinder.

[0027] Further, the outer surface of the protective cover is further provided with a pulling protrusion. The pulling protrusion facilitates the user to operate the protective cover to slide and open the protective cover. The outer surface refers to the surface away from the carrier.

[0028] Compared with the prior art, the beneficial effects of the present application are:

[0029] The present application uses simple, convenient operation, can effectively protect the air outlet of the breathing machine, prevent the air outlet and internal water tank and other pipelines of the breathing machine from being polluted by external dust and bacteria. The protective cover can be automatically reset under the action of the elastic member to protect the air outlet of the breathing machine, prevent the user from forgetting to cover the protective cover after using the breathing machine due to the original operation habit, and affect the working effect of the protection device. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a working schematic diagram of the existing breathing machine;

[0031] Figure 2 is a middle cross-sectional schematic diagram of the breathing machine of the present application;

[0032] Figure 3 is Figure 2 is an enlarged view of the middle circular area;

[0033] Figure 4 is a middle partial cross-sectional schematic diagram of the breathing machine of the present application;

[0034] Figure 5 is a partial cross-sectional schematic diagram of the breathing machine of the present application (the protective cover is in the closed state);

[0035] Figure 6 is a partial cross-sectional schematic diagram of the breathing machine of the present application (the protective cover is in the open state);

[0036] Figure 7 is a schematic diagram of the ventilation pipe fixing assembly;

[0037] Figure 8 is a cross-sectional view of the ventilation pipe fixing assembly;

[0038] Figure 9 is Figure 7 is an enlarged view of the middle A area;

[0039] Figure 10 is a schematic diagram of the protective cover (top view);

[0040] Figure 11 is a schematic diagram of the protective cover (bottom view);

[0041] Figure 12 is a schematic diagram of the protective cover deformation example (bottom view);

[0042] Figure 13 is a partial bottom view of the breathing machine of the present application (the protective cover is in the closed state);

[0043] Figure 14 is a partial bottom view of the breathing machine of the present application (the protective cover is in the open state);

[0044] Figure 15 is the upper cover view from above;

[0045] Figure 16 is a schematic view of a deformation example of the ventilation tube fixing assembly;

[0046] Figure 17 is a sectional view of a deformation example of the ventilation tube fixing assembly;

[0047] Figure 18 is a schematic view of the abutment of the protective cover and the limiting piece;

[0048] Figure 19 is a schematic view of the abutment of the protective cover and the ventilation tube.

[0049] In the figure: 1 - upper cover, 1.1 - opening, 1.2 - clasp, 1.3 - screw post, 1.4 - guide bar, 1.5 - upper cover fixing post, 2 - lower cover, 3 - fan assembly, 3.1 - fan air inlet, 3.2 - fan body, 3.3 - fan air outlet, 4 - control panel, 5 - water tank, 5.1 - water tank air inlet, 5.2 - water tank air outlet, 6 - ventilation tube fixing assembly, 6.1 - positioning protrusion, 6.2 - connecting cylinder, 6.3 - guide groove, 6.4 - central connecting tube, 6.5 - plate part, 6.6 - limiting piece, 6.6.1 - inclined surface, 7 - protective cover, 7.1 - push protrusion, 7.2 - protective cover fixing post, 7.3 - guide protrusion, 7.4 - tension spring, 7.5 - avoidance groove, 7.6 - positioning groove, 8 - ventilation tube, 9 - screw, 10 - face mask. DETAILED DESCRIPTION

[0050] The present application will be further described in detail below with reference to the accompanying drawings.

[0051] Example 1

[0052] Referring to Figures 2-19 , a breathing machine includes a breathing machine body and a ventilation tube 8, the breathing machine body includes an upper cover 1 of the breathing machine and a lower cover 2 of the breathing machine (the upper cover 1 and the lower cover 2 constitute a shell), a space formed by the upper cover 1 and the lower cover 2 is installed with a fan assembly 3 (an example of a fan), a control panel 4, a water tank 5, a ventilation tube fixing assembly 6, etc. When the breathing machine is used, the ventilation tube 8 is inserted into the ventilation tube fixing assembly 6, and when the use is finished, the ventilation tube 8 is pulled out of the ventilation tube fixing assembly 6. The fan assembly 3 includes a fan air inlet 3.1, a fan body 3.2, and a fan air outlet 3.3; the water tank 5 includes a water tank air inlet 5.1 and a water tank air outlet 5.2; air in the external environment enters the fan body 3.2 through the fan air inlet 3.1 and is pressurized, the pressurized gas enters the water tank air inlet 5.1 and the water tank air outlet 5.2 from the fan air outlet 3.3 in turn to adjust the humidity, and finally the gas enters the ventilation tube 8 through the ventilation tube fixing assembly 6. The ventilation tube fixing assembly 6 is the air outlet of the breathing machine.

[0053] Referring to Figures 2-8 , the ventilation pipe fixing assembly 6 is located inside the upper cover 1 (i.e. below the upper cover 1), and the ventilation pipe fixing assembly 6 comprises a plate component 6.5 (an example of a bearing member) and an air outlet assembly, wherein the air outlet assembly comprises a connecting cylinder 6.2 and a central connecting pipe 6.4, the plate component 6.5 is fixedly connected to the outer periphery of the connecting cylinder 6.2 near one end of the upper cover 1, and the plane where the plate component 6.5 is located is perpendicular to the axial direction of the connecting cylinder 6.2, and the plate component 6.5 is substantially parallel to the part of the upper cover 1 at the corresponding position; the central connecting pipe 6.4 is located in the connecting cylinder 6.2, and the central connecting pipe 6.4 is coaxially arranged with the connecting cylinder 6.2, and there is a gap between the connecting cylinder 6.2 and the central connecting pipe 6.4 for accommodating the ventilation pipe 8; and the end of the central connecting pipe 6.4 away from the upper cover 1 is fixedly connected to the connecting cylinder 6.2, and the end of the central connecting pipe 6.4 near the upper cover 1 does not protrude from (is not higher than) the plate component 6.5; the surface of the plate component 6.5 is provided with a limiting member 6.6; and the limiting member 6.6 is located on the side of the plate component 6.5 away from the connecting cylinder 6.2. The lower end of the air outlet assembly is in communication with the water tank air outlet 5.2, serving as the air outlet of the breathing machine, and the function of the ventilation pipe fixing assembly 6 is to provide a reliable mounting interface for the ventilation pipe 8, and the ventilation pipe fixing assembly 6 needs to have a certain rigidity, and is preferably made by integral molding; of course, those skilled in the art can understand that the air outlet assembly (including the connecting cylinder 6.2 and the central connecting pipe 6.4) and the plate component 6.5 can be separately manufactured and then assembled. When the user inserts the ventilation pipe 8 between the connecting cylinder 6.2 and the central connecting pipe 6.4, the plate component 6.5 will be subjected to an external force perpendicular to the plate surface, and the plate component 6.5 will be elastically deformed and concave down, and correspondingly the limiting member 6.6 will displace with the elastic deformation of the plate component 6.5, thereby releasing the position limitation on the sliding protective cover 7, and facilitating the automatic closing of the protective cover 7 (which will be described in detail below). Among them, the plate component 6.5 is fixedly connected to the outer periphery of the connecting cylinder 6.2 near one end of the upper cover 1, and it does not necessarily mean that the plate component 6.5 needs to be arranged around the entire connecting cylinder 6.2, and in some optional schemes, the plate component 6.5 can extend outward from part of the outer periphery of the connecting cylinder 6.2. It should be noted that the plate component 6.5 is an example of a bearing member, and those skilled in the art can use other forms of bearing members as long as they can be elastically deformed when pressed. It should be noted that in the above embodiment, the limiting member 6.6 is a protruding limiting member, and those skilled in the art can understand that the limiting member 6.6 can also be a limiting groove matched with the corresponding limiting protrusion on the protective cover 7.

[0054] In order to simplify the installation of the ventilation pipe fixing assembly 6, the upper cover 1 is provided with a clamping hook 1.2 and a screw column 1.3, one end of the plate component 6.5 is clamped into the clamping hook 1.2, and the other end of the plate component 6.5 is fixed to the screw column 1.3 of the upper cover 1 by means of a screw 9 (an example of a fastener). In this way of fixing, the ventilation pipe fixing assembly 6 can be quickly fixed to the upper cover 1, and the ventilation pipe fixing assembly 6 can be accurately positioned on the upper cover 1. The end of the plate component 6.5 clamped in the clamping hook 1.2 is equivalent to a free end, and when the plate component 6.5 is subjected to pressure in a direction perpendicular to the plane in which the plate component 6.5 lies, the end of the plate component 6.5 clamped in the clamping hook 1.2 can be slightly displaced, which makes it easier for the plate component 6.5 to elastically deform.

[0055] As can be appreciated by those skilled in the art, there are also various possibilities for the connection of the gas outlet assembly and the ventilation pipe 8, such as the ventilation pipe 8 being tightly fitted with the inner wall of the connecting cylinder 6.2 (in this case, the central connecting pipe 6.4 can be a hollow structure to reduce weight), or the ventilation pipe 8 being tightly fitted with the outer wall of the central connecting pipe 6.4 (in this case, the connecting cylinder 6.2 can be a hollow structure to reduce weight), or the ventilation pipe 8 being tightly fitted with both the outer wall of the central connecting pipe 6.4 and the inner wall of the connecting cylinder 6.2, so as to leaklessly transmit gas from the gas outlet assembly to the ventilation pipe 8.

[0056] The gas outlet assembly can have various forms, such as omitting the central connecting pipe 6.4, as shown in Figures 16-17 In this case, when the ventilation pipe 8 is connected to the gas outlet assembly 6, the ventilation pipe 8 is tightly fitted with the inner wall of the connecting cylinder 6.2.

[0057] Referring to Figures 2-6 The upper cover 1 is provided with an opening 1.1, and the connecting cylinder 6.2 and the central connecting pipe 6.4 of the gas outlet assembly are arranged corresponding to the opening 1.1; a protective cover 7 is slidingly arranged between the upper cover 1 and the plate component 6.5, and the protective cover 7 can be switched between a first position (closed state) and a second position (open state), when the protective cover 7 is in the closed state, the protective cover 7 closes (blocks) the opening 1.1, and when the protective cover 7 is in the open state, the gas outlet assembly is in an exposed state, and the ventilation pipe 8 can be connected to the gas outlet assembly through the opening 1.1. The outer surface of the protective cover 7 is further provided with a knob 7.1. The knob 7.1 facilitates the user to operate the protective cover 7, so as to slide the protective cover 7 open.

[0058] The protective cover 7 is located between the plate component 6.5 and the upper cover 1, and the plate component 6.5 and the upper cover 1 form a containing space of the protective cover 7, and define the sliding range of the protective cover 7. Preferably, both ends of the plate component 6.5 are provided with positioning protrusions 6.1 extending from the plate component 6.5 towards the upper cover 1, that is, the positioning protrusions 6.1 are located on the same side surface of the plate component 6.5 as the limiting member 6.6. When the ventilation pipe fixing assembly 6 is fixed to the upper cover 1, the extension height of the positioning protrusions 6.1 towards the upper cover 1 is greater than the thickness of the protective cover 7, so as to ensure that the protective cover 7 can slide in the gap between the upper cover 1 and the plate component 6.5. In order to facilitate the protective cover 7 to automatically return to the closed state, one end of a tension spring 7.4 (an example of an elastic member) is connected to the protective cover 7, and the other end is connected to the upper cover 1; specifically, one side of the upper cover 1 has an upper cover fixing column 1.5, the upper cover fixing column 1.5 is provided with a groove (not shown), and the tension spring 7.4 is installed at the corresponding position of the groove; both sides of the protective cover 7 have protective cover fixing columns 7.2, the protective cover fixing columns 7.2 are provided with grooves (not shown), and the tension spring 7.4 is installed at the corresponding position of the groove. Those skilled in the art can understand that the other end of the tension spring 7.4 can also be connected to the plate component 6.5 of the ventilation pipe fixing assembly 6; in some cases, the tension spring 7.4 can also be replaced by a compression spring. The tension spring 7.4 can apply a restoring force to the protective cover 7 to return to the closed state, and when the breathing machine is in an unused state, the elastic member can ensure that the protective cover 7 is always in the closed state, that is, the protective cover 7 closes the opening 1.1 of the upper cover 1.

[0059] The plate component 6.5 and / or the upper cover 1 is provided with a guide component for guiding the sliding of the protective cover 7. By providing the guide component, it can be ensured that the protective cover 7 slides in a predetermined direction, and the occurrence of shaking and falling of the protective cover 7 can be prevented. Specifically, the guide component includes a guide strip 1.4 provided on the upper cover 1; of course, those skilled in the art can understand that the guide strip 1.4 is provided on the plate component 6.5, which can also have the same effect. In order to further improve the stability of the sliding guide, the protective cover 7 is provided with a guide protrusion 7.3, and the plate component 6.5 is provided with a corresponding matching guide groove 6.3; the guide groove 6.3 not only plays a role in guiding the sliding of the protective cover 7, but also is more conducive to increasing the elasticity of the plate component 6.5, so that the plate component 6.5 is more prone to deformation in the axial direction of the connecting cylinder 6.2.

[0060] Preferably, as shown in Figures 10-11 the inner surface of the protective cover 7 is provided with an avoiding groove 7.5 corresponding to the limiting member 6.6. The avoiding groove 7.5 can reduce the mutual interference between the protective cover 7 and the limiting member 6.6 as much as possible during the sliding process of the protective cover 7, and the avoiding groove 7.5 is not a through groove, as shown in Figure 11As shown, the avoidance groove 7.5 does not extend to the edge of the protective cover 7 from left to right. Correspondingly, the limiting piece 6.6 has an inclined surface 6.6.1 near one side of the connecting cylinder 6.2. When the protective cover 7 is sliding in the process of opening, the limiting piece 6.6 is located in the avoidance groove 7.5, and when the inclined surface 6.6.1 of the limiting piece 6.6 helps the limiting piece 6.6 to escape from the avoidance groove 7.5 and finally abut against the right edge of the protective cover 7 to realize the positioning of the protective cover 7 (as shown in Figure 9 、 Figure 18 As shown, the end side wall of the avoidance groove 7.5 can also be provided with a corresponding inclined surface (as shown in Figure 18 ). As shown in Figure 7 、 Figure 11 The limiting piece 6.6 is provided with two, and the avoidance groove 7.5 is also provided with two in parallel, which is beneficial to improve the stability.

[0061] In the above embodiment, the limiting piece 6.6 abuts against the right edge of the protective cover 7 to realize the positioning of the protective cover 7 in the open state. In another embodiment, as shown in Figure 12 The inner surface of the protective cover is also provided with a positioning groove 7.6, and when the protective cover 7 is in the open state, the limiting piece 6.6 abuts against the side wall of the positioning groove 7.6. By providing the positioning groove 7.6, the limiting piece 6.6 does not have to abut against the edge of the protective cover 7, so that the position of the limiting piece 6.6 can be more freely set, and it is especially beneficial to set the limiting piece 6.6 at a position where the deformation of the plate member 6.5 is large, such as near the middle position between the end of the plate member 6.5 and the connecting cylinder 6.2.

[0062] The working principle of the sliding protective cover of the breathing machine of the present application is that when the breathing machine is not working, the protective cover 7 closes the breathing machine outlet opening 1.1 under the action of the tension spring 7.4, as shown in Figure 3 In this state, the protective cover 7 protects the outlet opening and other pipelines such as the internal water tank of the breathing machine, preventing them from being polluted by dust and bacteria from the outside. When the breathing machine is working, the user pushes the actuating protrusion 7.1 backward to make the protective cover 7 slide to open (expose) the opening 1.1 of the breathing machine, and the protective cover 7 slides to the left side of the limiting piece 6.6 (or the limiting piece 6.6 is located in the positioning groove 7.6 of the protective cover 7), and the protective cover 7 is limited by abutting against the limiting piece 6.6 under the action of the tension spring 7.4 and cannot rebound, as shown in Figure 18 At this time, the protective cover 7 is in the second position (open state).

[0063] When the user inserts the ventilation tube 8, because the ventilation tube 8 is tightly fitted with the air outlet assembly, the plate member 6.5 will be subjected to a pressure in a direction perpendicular to the plate member 6.5, and the direction points to the inside of the breathing machine. Under the action of the pressure, the plate member 6.5 will be elastically deformed inwardly, and the deformation makes the limiting member 6.6 move downwardly, and the limiting of the protective cover 7 is released, the limiting member 6.6 releases the limiting of the protective cover 7, and the protective cover 7 will slide forwardly under the action of the tension spring 7.4 and abut against the ventilation tube 8, as shown in Figure 19

[0064] When the user stops using the breathing machine and pulls out the ventilation tube 8, the sliding cover 7.1 of the protection device 7 will continue to automatically slide under the action of the tension spring and reach the position of closing the air outlet opening 1.1 of the breathing machine, at this time, the protective cover 7 is in the first position (closed state).

[0065] When the user stops using the breathing machine and pulls out the ventilation tube 8, the protective cover 7 will continue to automatically slide forwardly under the action of the tension spring 7.4 and reach the position of closing the opening 1.1. The automatically reset protective cover 7 helps to prevent the user from forgetting to cover the protective cover due to the original operation habit after using the breathing machine, and improves the protection effect. At the same time, the protective cover 7 can be automatically reset without the user's hands touching again, and the possibility of the air outlet of the breathing machine being polluted is reduced again.

[0066] The embodiments of the present application are described above in combination with the drawings, and the embodiments and the features in the embodiments in the present application can be combined with each other without conflict. The present application is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative but not limited, and those skilled in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, and these all belong to the protection scope of the present application.​

Claims

1. A breathing machine, comprising a breathing machine body and a ventilation tube (8), the breathing machine body comprising a fan and an air outlet assembly, the fan being provided with a fan air inlet (3.1) and a fan air outlet (3.3), the air outlet assembly being in communication with the fan air outlet (3.3) and being used for connecting the ventilation tube (8), characterized in that: the breathing machine body further comprises a shell, an elastic member and a bearing member located in the shell, the air outlet assembly being arranged on the bearing member and located in the shell, the shell being provided with an opening (1.1) corresponding to the air outlet assembly; a protective cover (7) is slidingly arranged between the shell and the bearing member; a limiting member (6.6) is arranged on the bearing member, the protective cover (7) being able to be limited by the limiting member (6.6) when being opened; the bearing member is depressed when the ventilation tube (8) is connected to the air outlet assembly, the elastic deformation of the bearing member causes the limiting member (6.6) to release the limitation on the protective cover (7); after the ventilation tube (8) is separated from the air outlet assembly, the protective cover (7) is closed under the action of the elastic member to shield the air outlet assembly; one end of the elastic member is connected to the protective cover (7), and the other end is connected to the shell or the bearing member; the bearing member is a plate member (6.5), the air outlet assembly comprises a connecting cylinder (6.2), the plate member (6.5) is fixedly connected to the outer periphery of the connecting cylinder (6.2) near one end close to the shell, and the plane where the plate member (6.5) is located is perpendicular to the axial direction of the connecting cylinder (6.2); the surface of the plate member (6.5) is provided with a limiting member (6.6), and the limiting member (6.6) is located on the side of the plate member (6.5) away from the connecting cylinder (6.2). The air outlet assembly further comprises a center connecting tube (6.4) located in the connecting cylinder (6.2), the center connecting tube (6.4) is coaxially arranged with the connecting cylinder (6.2), and there is a gap between the connecting cylinder (6.2) and the center connecting tube (6.4); and one end of the center connecting tube (6.4) away from the limiting member (6.6) is fixedly connected to the connecting cylinder (6.2), and the other end of the center connecting tube (6.4) close to the limiting member (6.6) does not protrude from the plate member (6.5). The side of the limiting member (6.6) close to the connecting cylinder (6.2) has an inclined surface (6.6.1). The shell is provided with a clamping hook (1.2), one end of the plate member (6.5) is clamped into the clamping hook (1.2), and the other end of the plate member (6.5) is fixed to the shell by a fastener. The plate member (6.5) and / or the shell is provided with a guide member for guiding the sliding of the protective cover (7). The guide member comprises a guide strip (1.4) arranged on the plate member (6.5) and / or the shell. ​ ​ 2. The breathing apparatus according to claim 1, wherein ​ 3. The breathing apparatus of claim 1, wherein, ​ 4. The breathing apparatus of claim 1, wherein ​ 5. The breathing apparatus of claim 1, wherein ​ 6. A breathing apparatus according to claim 5, wherein, ​ 7. The breathing apparatus of claim 1, wherein The protective cover (7) is provided with a guide protrusion (7.3), and the plate component (6.5) is provided with a corresponding matched guide groove (6.3).

8. The breathing apparatus of claim 1, wherein, An inner surface of the protective cover (7) is provided with a recess (7.5) corresponding to the limiting piece (6.6).

9. The breathing apparatus of claim 3, wherein, The inner surface of the protective cover (7) is further provided with a positioning groove (7.6), and when the protective cover (7) is in an open state, the limiting piece (6.6) abuts against a side wall of the positioning groove (7.6).

Images