Ventilation pipe fixing assembly and breathing machine

Abstract

The invention discloses a breather pipe fixing assembly which is characterized in that the breather pipe fixing assembly comprises a connecting cylinder (6.2) and a plate component (6.5), the plate component (6.5) is fixedly connected to the 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); a limiting piece (6.6) is arranged on the surface of the plate component (6.5) and located on the side, away from the connecting cylinder (6.2), of the plate component (6.5). The invention further relates to a breathing machine. The device is easy to use and convenient to operate, the air outlet of the breathing machine can be effectively protected, and the air outlet of the breathing machine, an internal water tank and other pipelines are prevented from being polluted by external dust, bacteria and the like.

Description

Technical Field

[0001] The invention relates to a ventilation tube fixing component and a ventilator, belonging to the technical field of household ventilator applications. Background Art

[0002] As a device to assist breathing, ventilators have been increasingly used by families in need. Figure 1 As shown, the turbine blower assembly 3 in the ventilator sucks outside air into the ventilator for pressurization, and the pressurized air passes through the ventilator water tank 5 and then blows out through the ventilator outlet. When the user uses it, a ventilator tube 8 is installed on the ventilator outlet, and the ventilator tube is connected to a mask 10, through which the user can breathe the pressurized air output from the ventilator to assist the user in breathing.

[0003] The air outlet (exhaust pipe) of the existing ventilator protrudes from the housing of the ventilator, such as the ventilator disclosed in the design patent with publication number CN306453142S. The advantage of this arrangement is that it is convenient for the user to plug the ventilator into the air outlet and to detach the ventilator from the air outlet, but the disadvantage of this arrangement is that the air outlet is directly exposed to the air and lacks protection measures. When the ventilator is stored, its air outlet is very easy to be contaminated by dust, bacteria or other foreign matter in the environment, such as pet hair. When the user uses a ventilator with a contaminated air outlet, the pollutants will be transported to the mask by pressurized air and enter the user's respiratory tract, causing discomfort to the user, and even causing respiratory tract or lung infection.

[0004] The utility model patent with authorization announcement number CN207445309U discloses a protective device for the air outlet of a non-invasive ventilator, but the solution is only applicable to a ventilator described in its specification and cannot be applied to other home ventilators. In addition, the device needs to be manually removed and installed during use, which is inconvenient to operate.

[0005] The existing ventilator air outlet (air outlet pipe) is directly fixed to the housing and protrudes out of the housing. When in use, the ventilator pipe is directly plugged into the air outlet. The air outlet is fixedly connected to the housing, and there is no cover to protect the air outlet. The air outlet cannot be used as a trigger component to trigger the cover to move. Summary of the invention

[0006] In order to overcome the problems existing in the prior art, the present invention provides a ventilation tube fixing assembly, which is suitable for a ventilator provided with a protective cover and is used as a triggering component of the protective cover. The specific technical solution is as follows.

[0007] A ventilation pipe fixing assembly, characterized in that it includes: a connecting tube and a plate component, the plate component is fixedly connected to the outer periphery of one end of the connecting tube, and the plane where the plate component is located is perpendicular to the axial direction of the connecting tube; a limiting member is arranged on the surface of the plate component, and the limiting member is located on the side of the plate component away from the connecting tube.

[0008] By adopting the above-mentioned technical solution, the vent pipe fixing assembly is used to connect and fix the vent pipe. When the user inserts the vent pipe into the connecting tube, the plate component will be subjected to an external force perpendicular to the plate surface, and the plate component will undergo elastic deformation and become concave. Correspondingly, the limiter will move with the elastic deformation of the plate component, thereby releasing the position limitation of the sliding protective cover, which is conducive to the automatic closing of the protective cover (described in detail below). That is, the vent pipe fixing assembly is not only used to connect the vent pipe, but also can serve as a trigger component for the movement of the protective cover.

[0009] Furthermore, positioning protrusions are provided at both ends of the plate component, and the positioning protrusions and the stopper are located on the same side surface of the plate component. When the vent pipe fixing assembly is fixed to the shell, the extension height of the positioning protrusion toward the shell is greater than the thickness of the protective cover, thereby ensuring that the protective cover can slide in the gap between the shell and the plate component.

[0010] Furthermore, the ventilation pipe fixing assembly also includes a central connecting pipe located in the connecting tube, the central connecting pipe is coaxially arranged with the connecting tube, and there is a gap between the connecting tube and the central connecting pipe; and one end of the central connecting pipe away from the limiting member is fixedly connected to the connecting tube, and one end of the central connecting pipe close to the limiting member does not protrude from the plate component.

[0011] Preferably, a side of the limiting member close to the connecting tube has an inclined surface.

[0012] Based on the same inventive concept, the present invention also relates to a ventilator, comprising a ventilator body and a ventilation pipe, wherein the ventilator body comprises a fan and an air outlet assembly, wherein the fan is provided with a fan air inlet and a fan air outlet, wherein the air outlet assembly is communicated with the air outlet and the air outlet assembly is used to connect the ventilation pipe, and wherein:

[0013] The ventilator body also includes a shell, an elastic member and a bearing member located in the shell, the air outlet assembly is arranged on the bearing member and located in the shell, and the shell is provided with an opening corresponding to the air outlet assembly;

[0014] A protective cover is slidably disposed between the housing and the bearing member;

[0015] A limiting member is provided on the bearing member, and the protective cover can be limited by the limiting member when it is opened;

[0016] When the vent pipe is connected to the air outlet assembly, the bearing member is pressed down, and the bearing member is elastically deformed so that the limiting member releases the limiting function on the protective cover;

[0017] When the vent pipe is separated from the air outlet assembly, the protective cover is closed under the action of the elastic member to cover the air outlet assembly.

[0018] The above technical solution breaks the conventional setting mode of the air outlet assembly protruding from the shell. By setting the air outlet assembly inside the shell and cooperating with the sliding protective cover, the air outlet assembly is reliably protected when the ventilator is not in use to prevent foreign matter from entering the air outlet assembly. When the protective cover is in the second position (open state), the ventilating pipe can be connected to the air outlet assembly through the opening of the shell. When the user inserts the ventilating pipe into the air outlet assembly, the plate component undergoes elastic deformation so that the limiter moves and disengages from the protective cover. The protective cover abuts against the ventilating pipe under the action of the elastic member; after use, the protective cover will automatically return to the first position (closed state) under the action of the elastic member after the ventilating pipe is removed. A accommodating space for the protective cover is formed between the plate component and the shell, which limits the sliding range of the protective cover. Among them, the elastic member can apply an elastic force to the protective cover to restore to the closed state. When the ventilator is not in use, the elastic member can ensure that the protective cover is always in the first position (closed state), that is, the protective cover blocks (closes) the opening of the shell.

[0019] Furthermore, 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.

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

[0021] Furthermore, the air outlet assembly further comprises a central connecting tube located in the connecting tube, the central connecting tube is coaxially arranged with the connecting tube, a gap is provided between the connecting tube and the central connecting tube; and one end of the central connecting tube away from the stopper is fixedly connected to the connecting tube, and one end of the central connecting tube close to the stopper does not protrude from the plate component. Preferably, the stopper has an inclined surface on one side close to the connecting tube.

[0022] Furthermore, a hook is provided on the shell, one end of the plate component is engaged with the hook, and the other end of the plate component is fixed to the shell by a fastener. By adopting this fixing method, the ventilation pipe fixing assembly can be quickly fixed to the shell, and the ventilation pipe fixing assembly can be accurately positioned on the shell. More advantageously, only one end of the plate component is fixed by a fastener, and the other end is connected to the hook. The end of the plate component connected to the hook is equivalent to a free end. When the plate component is subjected to pressure perpendicular to the plane of the plate component, the end of the plate component connected to the hook can be slightly displaced, which makes it easier for the plate component to undergo elastic deformation.

[0023] Furthermore, a guide component is provided on the carrier and / or the housing, and the guide component is used to guide the sliding of the protective cover. By providing the guide component, it is possible to ensure that the protective cover slides in a predetermined direction, and prevent the protective cover from shaking, falling off, etc. Preferably, the guide component includes a guide strip provided on the plate component and / or the housing.

[0024] Furthermore, the protective cover is provided with a guide protrusion, and the plate component is provided with a corresponding matching guide groove, wherein the guide groove not only plays a role in guiding the sliding of the protective cover, but also helps to increase the elasticity of the plate component, so that the plate component is more likely to deform along the axial direction of the connecting tube.

[0025] Furthermore, the inner surface of the protective cover is provided with an avoidance groove corresponding to the limiter. The setting of the avoidance groove can reduce the mutual interference between the protective cover and the limiter as much as possible during the sliding process. The inner surface refers to the surface facing the bearing member.

[0026] Furthermore, the inner surface of the protective cover is also provided with a positioning groove, and when the protective cover is in the open state, the limiting member abuts against the side wall of the positioning groove. By providing the positioning groove, the limiting member does not have to abut against the edge of the protective cover, so that the position of the limiting member can be set more freely, which is particularly conducive to setting the limiting member at a position where the deformation of the plate component is large, such as near the middle position between the end of the plate component and the connecting tube.

[0027] Furthermore, the outer surface of the protective cover is also provided with a toggle protrusion. The toggle protrusion facilitates the user to operate the protective cover, thereby sliding the protective cover open. The outer surface refers to the surface facing away from the carrier.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The present invention is simple to use and easy to operate, and can effectively protect the air outlet of the ventilator, preventing the air outlet and other pipelines such as the internal water tank of the ventilator from being contaminated by external dust and bacteria. The protective cover can automatically reset under the action of the elastic member to protect the air outlet of the ventilator, preventing the user from forgetting to cover the protective cover after using the ventilator due to the original operating habits, thereby affecting the working effect of the protective device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a working schematic diagram of an existing ventilator;

[0031] Figure 2 is a schematic diagram of a middle section of a ventilator of the present invention;

[0032] Figure 3 yes Figure 2 Magnified view of the middle circled area;

[0033] Figure 4 It is a schematic diagram of a middle partial cross-section of the ventilator of the present invention;

[0034] Figure 5 It is a partial cross-sectional schematic diagram of the screw position of the ventilator of the present invention (the protective cover is in a closed state);

[0035] Figure 6 It is a partial cross-sectional schematic diagram of the screw position of the ventilator of the present invention (the protective cover is in the open state);

[0036] Figure 7 Yes, schematic diagram of the snorkel fixing assembly;

[0037] Figure 8 Yes, a cross-sectional view of the snorkel fixing assembly;

[0038] Fig. 9 yes Figure 7 A magnified image of area A;

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

[0040] Fig.11 is a schematic diagram of the protective cover (looking up);

[0041] Fig.12 is a schematic diagram of a modified example of the protective cover (viewed from above);

[0042] Fig.13 It is a bottom view of a part of the ventilator of the present invention (the protective cover is in a closed state);

[0043] Fig.14 It is a bottom view of a part of the ventilator of the present invention (the protective cover is in the open state);

[0044] Fig.15 It is a bottom view of the upper cover;

[0045] Fig.16 is a schematic diagram of a modified example of a vent pipe fixing assembly;

[0046] Fig.17 is a cross-sectional view of a modified example of a vent pipe fixing assembly;

[0047] Fig.18 is a schematic diagram of the abutment between the protective cover and the limiting member;

[0048] Fig.19 It is a schematic diagram showing the contact between the protective cover and the vent pipe.

[0049] In the figure: 1-upper cover, 1.1-opening, 1.2-hook, 1.3-screw column, 1.4-guide strip, 1.5-upper cover fixing column, 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 pipe fixing assembly, 6.1-positioning protrusion, 6.2-connecting tube, 6.3-guide groove, 6.4-center connecting pipe, 6.5-plate component, 6.6-limiting member, 6.6.1-inclined surface, 7-protective cover, 7.1-sliding protrusion, 7.2-protective cover fixing column, 7.3-guide protrusion, 7.4-tension spring, 7.5-avoidance groove, 7.6-positioning groove, 8-ventilation pipe, 9-screw, 10-mask. DETAILED DESCRIPTION

[0050] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0051] Example 1

[0052] See also Figure 2-Figure 19 A ventilator includes a ventilator body and a ventilator tube 8. The ventilator body includes an upper cover 1 and a lower cover 2 of the ventilator (the upper cover 1 and the lower cover 2 constitute a housing). A fan assembly 3 (an example of a fan), a control panel 4, a water tank 5, and a ventilator tube fixing assembly 6 are installed in the space formed by the upper cover 1 and the lower cover 2. When the ventilator is in use, the ventilator tube 8 is plugged into the ventilator tube fixing assembly 6. When the ventilator is used, the ventilator tube 8 is removed from the ventilator 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; the air in the external environment enters the fan body 3.2 through the fan air inlet 3.1 and is pressurized, and the pressurized gas enters the water tank air inlet 5.1 and the water tank air outlet 5.2 in turn from the fan air outlet 3.3 to adjust the humidity, and finally the gas enters the ventilation pipe 8 through the ventilation pipe fixing assembly 6. The ventilation pipe fixing assembly 6 is the air outlet of the ventilator.

[0053] See also Figure 2-Figure 8 The vent pipe fixing assembly 6 is located inside the upper cover 1 (i.e., below the upper cover 1), and includes a plate component 6.5 (an example of a bearing member) and an air outlet assembly, wherein the air outlet assembly includes a connecting tube 6.2 and a central connecting tube 6.4, the plate component 6.5 is fixedly connected to the outer periphery of the connecting tube 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 tube 6.2, and the plate component 6.5 is roughly parallel to the upper cover 1 portion at the corresponding position; the central connecting tube 6. 4 is located in the connecting tube 6.2, the central connecting tube 6.4 is coaxially arranged with the connecting tube 6.2, and there is a gap between the connecting tube 6.2 and the central connecting tube 6.4 to accommodate the ventilating tube 8; and the end of the central connecting tube 6.4 away from the upper cover 1 is fixedly connected to the connecting tube 6.2, and the end of the central connecting tube 6.4 close to the upper cover 1 does not protrude (is not higher than) the plate component 6.5; a limiter 6.6 is arranged on the surface of the plate component 6.5; and the limiter 6.6 is located on the side of the plate component 6.5 away from the connecting tube 6.2. The lower end of the air outlet assembly is connected to the water tank air outlet 5.2. As the air outlet of the ventilator, the function of the ventilating tube fixing assembly 6 is to provide a reliable installation interface for the ventilating tube 8. The ventilating tube 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 tube 6.2 and the central connecting tube 6.4) and the plate component 6.5 can be assembled after being manufactured separately. When the user inserts the vent 8 between the connecting tube 6.2 and the central connecting tube 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. Correspondingly, the limiter 6.6 will be displaced with the elastic deformation of the plate component 6.5, thereby releasing the position limit of the sliding protective cover 7, which is conducive to the automatic closing of the protective cover 7 (described in detail below). Among them, the plate component 6.5 is fixedly connected to the outer periphery of the connecting tube 6.2 near one end of the upper cover 1, which does not necessarily mean that the plate component 6.5 is arranged around the entire connecting tube 6.2. In some optional schemes, the plate component 6.5 can extend outward from part of the outer periphery of the connecting tube 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 adopt other forms of bearing members as long as they can be suitable for elastic deformation when pressed. It should be noted that in the above embodiment, the limiting member 6.6 is a protruding limiting member. Those skilled in the art can understand that the limiting member 6.6 can also be a limiting groove that cooperates with a corresponding limiting protrusion on the protective cover 7.

[0054] In order to simplify the installation of the vent pipe fixing assembly 6, a hook 1.2 and a screw column 1.3 are provided on the upper cover 1, one end of the plate component 6.5 is hooked into the 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 a screw 9 (an example of a fastener). With this fixing method, the vent pipe fixing assembly 6 can be quickly fixed to the upper cover 1, and the vent pipe fixing assembly 6 can be accurately positioned on the upper cover 1. The end of the plate component 6.5 that is hooked to the hook 1.2 is equivalent to a free end. When the plate component 6.5 is subjected to pressure perpendicular to the plane of the plate component 6.5, the end of the plate component 6.5 that is hooked to the hook 1.2 can be slightly displaced, which makes it easier for the plate component 6.5 to undergo elastic deformation.

[0055] Those skilled in the art may know that there are many possible ways of connecting the air outlet assembly and the vent pipe 8, such as the vent pipe 8 is tightly fitted with the inner wall of the connecting tube 6.2 (in this case, the central connecting tube 6.4 may be a hollow structure to reduce weight), or the vent pipe 8 is tightly fitted with the outer wall of the central connecting tube 6.4 (in this case, the connecting tube 6.2 may be a hollow structure to reduce weight), or the vent pipe 8 is tightly fitted with both the outer wall of the central connecting tube 6.4 and the inner wall of the connecting tube 6.2, so as to transmit the gas from the air outlet assembly to the vent pipe 8 without leakage.

[0056] The air outlet assembly can have various forms, such as eliminating the central connecting pipe 6.4, such as Figure 16-17 As shown, when the vent pipe 8 is connected to the air outlet assembly 6, the vent pipe 8 is tightly matched with the inner wall of the connecting tube 6.2.

[0057] See also Figure 2-Figure 6 The upper cover 1 is provided with an opening 1.1, and the connecting tube 6.2 and the central connecting pipe 6.4 of the air outlet assembly are provided corresponding to the opening 1.1; a protective cover 7 is slidably provided between the upper cover 1 and the plate component 6.5, and the protective cover 7 can switch between a first position (closed state) and a second position (opened state). When the protective cover 7 is in the closed state, the protective cover 7 closes (shields) the opening 1.1, and when the protective cover 7 is in the open state, the air outlet assembly is in an exposed state, and the vent pipe 8 can pass through the opening 1.1 and connect to the air outlet assembly. The outer surface of the protective cover 7 is also provided with a toggle protrusion 7.1. The toggle protrusion 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 a storage space for the protective cover 7 is formed between the plate component 6.5 and the upper cover 1, which limits the sliding range of the protective cover 7. Preferably, positioning protrusions 6.1 are provided at both ends of the plate component 6.5, and the positioning protrusions 6.1 extend from the plate component 6.5 toward the upper cover 1, that is, the positioning protrusions 6.1 and the limiting member 6.6 are located on the same side surface of the plate component 6.5. When the ventilating pipe fixing assembly 6 is fixed to the upper cover 1, the extension height of the positioning protrusions 6.1 toward the upper cover 1 is greater than the thickness of the protective cover 7, thereby ensuring 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 the 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, there is an upper cover fixing column 1.5 on one side of the upper cover 1, and a groove (not shown) is provided on the upper cover fixing column 1.5, and a tension spring 7.4 is installed at the corresponding position of the groove; there are protective cover fixing columns 7.2 on both sides of the protective cover 7, and the protective cover fixing columns 7.2 are provided with a groove (not shown), and a tension spring 7.4 is installed at the corresponding position of the groove. It can be understood by those skilled in the art 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 an elastic force to the protective cover 7 to return to the closed state. When the ventilator is not in use, the elastic member can ensure that the protective cover 7 is always in a 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 are provided with a guide component, which is used to guide 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 protective cover 7 is prevented from shaking, falling off, etc. Specifically, the guide component includes a guide bar 1.4 provided on the upper cover 1; of course, those skilled in the art can understand that: the guide bar 1.4 provided on the plate component 6.5 can also play the same role. In order to further improve the stability of the sliding guide, a guide protrusion 7.3 is provided on the protective cover 7, and a corresponding guide groove 6.3 is provided on the plate component 6.5; the guide groove 6.3 not only plays the role of 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 along the axial direction of the connecting tube 6.2.

[0060] Preferably, if Figure 10-11 As shown, the inner surface of the protective cover 7 is provided with an avoidance groove 7.5 corresponding to the stopper 6.6. The setting of the avoidance groove 7.5 can minimize the mutual interference between the protective cover 7 and the stopper 6.6 during the sliding process. The avoidance groove 7.5 is not a through groove setting, such as Fig.11As shown, the avoidance groove 7.5 does not extend from left to right to the edge of the protective cover 7. Accordingly, the side of the stopper 6.6 close to the connecting tube 6.2 has an inclined surface 6.6.1. When the protective cover 7 is in the process of opening and sliding, the stopper 6.6 is located in the avoidance groove 7.5. When the inclined surface 6.6.1 of the stopper 6.6 helps the stopper 6.6 to disengage from the avoidance groove 7.5 and finally abut against the right edge of the protective cover 7 to achieve the positioning of the protective cover 7 (as shown in FIG. 1 ). Fig. 9 , Fig.18 As shown), of course, the end side wall of the avoidance groove 7.5 can also be provided with a corresponding inclined surface (such as Fig.18 ). Figure 7 , Fig.11 As shown, two limit members 6.6 are provided, and two avoidance grooves 7.5 are also provided in parallel, which is conducive to improving stability.

[0061] In the above embodiment, the stopper 6.6 abuts against the right edge of the protective cover 7 to achieve positioning of the protective cover 7 in the open state. Fig.12 As shown, the inner surface of the protective cover is further provided with a positioning groove 7.6, and when the protective cover 7 is in the open state, the stopper 6.6 abuts against the side wall of the positioning groove 7.6. By providing the positioning groove 7.6, the stopper 6.6 does not have to abut against the edge of the protective cover 7, so that the position of the stopper 6.6 can be set more freely, which is particularly conducive to setting the stopper 6.6 at a position where the deformation of the plate component 6.5 is large, such as near the middle position between the end of the plate component 6.5 and the connecting tube 6.2.

[0062] The working principle of the sliding protective cover of the ventilator of the present invention is as follows: when the ventilator is not working, the protective cover 7 closes the ventilator air outlet opening 1.1 under the action of the tension spring 7.4. Figure 3 As shown, in this state, the protective cover 7 protects the air outlet and other pipelines such as the internal water tank of the ventilator to prevent them from being contaminated by external dust and bacteria. When the ventilator is working, the user pushes the toggle protrusion 7.1 backward to slide the protective cover 7 to open (expose) the opening 1.1 of the ventilator. The protective cover 7 slides to the left side of the limiter 6.6 (or the limiter 6.6 is located in the positioning groove 7.6 of the protective cover 7). The protective cover 7 is abutted against the limiter 6.6 by the action of the tension spring 7.4 and is limited, and cannot rebound. Fig.18 As shown, at this time, the protection cover 7 is in the second position (open state).

[0063] When the user inserts the ventilating tube 8, since the ventilating tube 8 and the air outlet assembly are tightly matched, the plate component 6.5 will be subjected to pressure perpendicular to the plate component 6.5, and the direction is directed to the inside of the ventilator. Under the action of this pressure, the plate component 6.5 will produce elastic deformation inward, and the deformation will cause the limiter 6.6 to move downward, so that the limit of the protective cover 7 is disengaged, and the limiter 6.6 releases the limit on the protective cover 7. The protective cover 7 will slide forward under the action of the tension spring 7.4 to support the ventilating tube 8. Fig.19 shown.

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

[0065] When the user stops using the ventilator and pulls out the ventilation tube 8, the protective cover 7 will continue to slide forward automatically under the action of the tension spring 7.4 to a position where the opening 1.1 is closed. The automatically reset protective cover 7 helps prevent the user from forgetting to put on the protective cover after using the ventilator due to the original operating habits, thereby improving the protective effect. At the same time, the protective cover 7 can be automatically reset without the user's hand contacting the operation again, which further reduces the possibility of contamination of the ventilator's air outlet.

[0066] The embodiments of the present invention are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention is not limited to the above-mentioned specific implementations, which are merely illustrative and not restrictive. Under the enlightenment of the present invention, those skilled in the art can also make many forms without departing from the scope of protection of the present invention and the claims, all of which belong to the protection scope of the present invention.

Claims

1. A ventilation pipe fixing assembly, characterized in that: include: A connecting tube (6.2) and a plate component (6.5), wherein the plate component (6.5) is fixedly connected to the outer periphery of one end of the connecting tube (6.2), and the plane where the plate component (6.5) is located is perpendicular to the axial direction of the connecting tube (6.2); a limiting member (6.6) is provided on the surface of the plate component (6.5); and the limiting member (6.6) is located on a side of the plate component (6.5) that is away from the connecting tube (6.2).

2. A ventilator fixing assembly according to claim 1, characterized in that: Both ends of the plate component (6.5) are provided with positioning protrusions (6.1), and the positioning protrusion (6.1) and the limiting member (6.6) are located on the same side surface of the plate component (6.5).

3. A ventilator fixing assembly according to claim 1, characterized in that: The ventilation pipe fixing assembly also includes a central connecting pipe (6.4) located in the connecting tube (6.2); the central connecting pipe (6.4) is coaxially arranged with the connecting tube (6.2); a gap is provided between the connecting tube (6.2) and the central connecting pipe (6.4); and one end of the central connecting pipe (6.4) away from the limiting member (6.6) is fixedly connected to the connecting tube (6.2); and one end of the central connecting pipe (6.4) close to the limiting member (6.6) does not protrude from the plate member (6.5).

4. A ventilator fixing assembly according to claim 1, characterized in that: The side of the limiting member (6.6) close to the connecting tube (6.2) has an inclined surface (6.6.1).

5. A ventilator, comprising a ventilator body and a ventilation pipe (8), wherein the ventilator body comprises a fan and an air outlet assembly, wherein the fan is provided with a fan air inlet (3.1) and a fan air outlet (3.3), wherein the air outlet assembly is communicated with the air outlet (3.3) and is used to connect the ventilation pipe (8), and wherein: The ventilator body also includes a shell, an elastic member and a bearing member located in the shell, the air outlet assembly is arranged on the bearing member and located in the shell, and the shell is provided with an opening (1.1) corresponding to the air outlet assembly; A protective cover (7) is slidably arranged between the housing and the bearing member; A limiting member (6.6) is provided on the bearing member, and the protective cover (7) can be limited by the limiting member (6.6) when it is opened; When the vent pipe (8) is connected to the air outlet assembly, the bearing member is pressed down, and the bearing member undergoes elastic deformation so that the limiting member (6.6) releases the limiting function on the protective cover (7); When the vent pipe (8) is separated from the air outlet assembly, the protective cover (7) is closed under the action of the elastic member to cover the air outlet assembly.

6. A ventilator according to claim 5, characterized in that: 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.

7. A ventilator according to claim 5, characterized in that: The bearing member is a plate member (6.5), the air outlet assembly comprises a connecting tube (6.2), the plate member (6.5) is fixedly connected to the outer periphery of the connecting tube (6.2) close to one end of the shell, and the plane where the plate member (6.5) is located is perpendicular to the axial direction of the connecting tube (6.2); a limiting member (6.6) is arranged on the surface of the plate member (6.5), and the limiting member (6.6) is located on a side of the plate member (6.5) away from the connecting tube (6.2).

8. A ventilator according to claim 6, characterized in that: The air outlet assembly also includes a central connecting pipe (6.4) located in the connecting tube (6.2); the central connecting pipe (6.4) is coaxially arranged with the connecting tube (6.2); a gap is provided between the connecting tube (6.2) and the central connecting pipe (6.4); and one end of the central connecting pipe (6.4) away from the limiting member (6.6) is fixedly connected to the connecting tube (6.2); and one end of the central connecting pipe (6.4) close to the limiting member (6.6) does not protrude from the plate member (6.5).

9. A ventilator according to claim 6, characterized in that: The side of the limiting member (6.6) close to the connecting tube (6.2) has an inclined surface (6.6.1).

10. A ventilator according to claim 5, characterized in that: A hook (1.2) is provided on the shell, one end of the plate component (6.5) is hooked into the hook (1.2), and the other end of the plate component (6.5) is fixed to the shell via a fastener.

11. A ventilator according to claim 5, characterized in that: The plate component (6.5) and / or the shell are provided with a guide component, which is used to guide the sliding of the protective cover (7); preferably, the guide component comprises a guide strip (1.4) provided on the plate component (6.5) and / or the shell.

12. A ventilator according to claim 5, characterized in that: The protective cover (7) is provided with a guide protrusion (7.3), and the plate component (6.5) is provided with a corresponding guide groove (6.3).

13. A ventilator according to claim 5, characterized in that: An avoidance groove (7.5) is provided on the inner surface of the protective cover (7) corresponding to the limiting member (6.6).

14. A ventilator according to claim 9, characterized in that: The inner surface of the protective cover (7) is also provided with a positioning groove (7.6); when the protective cover (7) is in an open state, the limiting member (6.6) abuts against the side wall of the positioning groove (7.6).

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