Ventilator outlet sliding protection device

Abstract

The application discloses a sliding protection device for an air outlet of a breathing machine, and the breathing machine comprises a shell, a first elastic member, a second elastic member, a limiting support and an air outlet assembly in the shell; a protection cover is slidably arranged on a fixing seat; the fixing seat is provided with an opening corresponding to the air outlet assembly; the limiting support is slidably arranged on the air outlet assembly, one end of the second elastic member is connected to the limiting support, and the other end of the second elastic member is connected to the air outlet assembly; when the protection cover is in a closed state, the protection cover covers the opening; when the protection cover is in an open state, the air outlet assembly is in an exposed state, and the protection cover is positioned by abutting against the limiting support under the action of the first elastic member; the limiting support releases the positioning of the protection cover in response to the insertion of a breathing tube into the air outlet assembly. 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, bacteria and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to a breathing machine outlet sliding protection device, belonging to the household breathing machine application technical field. BACKGROUND

[0002] As a breathing assisting device, breathing machine has been more and more widely used in the families with needs. Referring to the working mode of the breathing machine as shown in the figure, the turbine fan assembly 3 in the breathing machine sucks the air outside into the breathing machine for pressurization, and the pressurized air is blown out through the breathing machine outlet after passing through the breathing machine water tank 5. When used by the user, the breather pipe 8 is installed on the breathing machine outlet, and the breather pipe is connected with the mask 10, so that the user can breathe the pressurized air output from the breathing machine through the mask 10 to assist the user to breathe. Figure 1

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

[0004] The utility model patent with the authorized announcement number CN207445309U discloses a protection device for the 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, and the device needs to be manually removed and installed when used, which is inconvenient to operate. SUMMARY

[0005] In order to overcome the problems in the prior art, the present application provides a breathing machine outlet sliding protection device which can reliably protect the outlet of the breathing machine and prevent foreign matters from entering the outlet. The specific technical scheme is as follows.

[0006] A breathing machine outlet sliding protection device, comprising a breathing machine main body and a breather pipe, wherein the breathing machine main body comprises a fan and an outlet assembly, the fan is provided with a fan air inlet and a fan air outlet, the outlet assembly is in communication with the fan air outlet and is used to connect the breather pipe, and the device is characterized in that:

[0007] The outlet assembly is located in the shell, a fixing seat is arranged on the shell, and a protection cover is slidably arranged on the fixing seat.​

[0008] Further, the shell is provided with an opening corresponding to the air outlet assembly; when the protective cover is opened, the opening is not blocked so that the air outlet assembly is in an exposed state; when the protective cover is closed, the opening is blocked so that the air outlet assembly is in a non-exposed state.

[0009] When the ventilation tube is inserted into the air outlet assembly, the elastic limiting assembly is triggered to move downward to release the locking of the protective cover, and when the ventilation tube is removed from the air outlet assembly, the protective cover is closed under the action of the first elastic member.

[0010] Further, the shell is provided with an opening corresponding to the air outlet assembly; when the protective cover is opened, the opening is not blocked so that the air outlet assembly is in an exposed state; when the protective cover is closed, the opening is blocked so that the air outlet assembly is in a non-exposed state.

[0011] Further, one end of the elastic member is connected to the protective cover, and the other end is connected to the shell or the fixing seat.

[0012] Further, the elastic limiting assembly includes a second elastic member and a limiting support, the second elastic member is used to exert an elastic force to make the limiting support move towards the protective cover; preferably, the elastic force directions of the first elastic member and the second elastic member are perpendicular to each other; the limiting support is slidingly arranged in the air outlet assembly, one end of the second elastic member is connected to the limiting support, and the other end is connected to the air outlet assembly.

[0013] With the above technical solution, the conventional setting mode of the air outlet protruding from the shell is broken, the air outlet assembly (corresponding to the air outlet in the prior art) is arranged inside the shell, and the slidingly arranged protective cover is matched, so that reliable protection is provided for the air outlet assembly when the breathing machine is not used, and foreign matters are prevented from entering the air outlet assembly. When the protective cover is in the open state, the ventilation tube can be connected with the air outlet assembly through the opening, and in the process of inserting the ventilation tube into the ventilation tube fixing assembly, the movement of the limiting support is triggered to release the locking of the protective cover by the limiting support, and the protective cover is abutted to the ventilation tube under the action of the first elastic member. After use, the protective cover will automatically return to the closed state under the action of the first elastic member after the ventilation tube is removed. The first elastic member can exert an elastic force on the protective cover to return to the closed state, and when the breathing machine is in the non-use state, the first elastic member can ensure that the protective cover is always in the closed state, i.e., the protective cover closes the opening of the shell.

[0014] Further, the air outlet assembly comprises a connecting cylinder and a central connecting pipe, one end of the connecting cylinder is connected to the shell, the other end is connected to the outer periphery of the central connecting pipe, and a gap is formed between the connecting cylinder and the central connecting pipe; the end of the central connecting pipe close to the shell does not protrude from the shell. When the protective cover is in the open state, the breather pipe is inserted into the gap between the connecting cylinder and the central connecting pipe through the opening of the shell, and the breather pipe is tightly fitted with the air outlet assembly to fix the breather pipe.

[0015] Further, a guide hole is arranged on the connecting cylinder, and the limiting support passes through the guide hole. In this way, the limiting support is reliably and slidably connected with the air outlet assembly.

[0016] Further, an opening is arranged on the wall of the connecting cylinder, and a movable touch piece is arranged in the opening and located in the gap between the connecting cylinder and the central connecting pipe.

[0017] Further, the touch piece is a first inclined wedge block, a second inclined wedge block is arranged on the limiting support and matched with the first inclined wedge block; when the breather pipe is inserted into the gap between the connecting cylinder and the central connecting pipe, the first inclined wedge block can slide in the mounting hole. By arranging the inclined wedge blocks, when the breather pipe is inserted into the gap, the breather pipe (8) touches the first inclined wedge block (6.8) to slide in the horizontal direction of the opening, so as to drive the second inclined wedge block (9.2) to move the limiting support (9) downward. The movement of the limiting support can release the locking of the protective cover, so that the protective cover is abutted to the breather pipe under the action of the first elastic piece. When the breather pipe is removed, the protective cover will automatically return to the closed state under the action of the first elastic piece.

[0018] Further, the limiting support comprises two parallel rod pieces, and the second inclined wedge block is connected between the two rod pieces. By such arrangement, the first elastic piece can pass between the two rod pieces, avoiding the interference between the first elastic piece and the limiting support; meanwhile, the two rod pieces can better limit (position) the protective cover, preventing the protective cover from being skewed or stuck due to uneven force.

[0019] Further, the opening is a vertical strip-shaped through slot (6.10), and the touch piece is a horizontal rod (9.5) arranged on the limiting support (9) and movable up and down along the strip-shaped through slot (6.10). When the breather pipe (8) is inserted into the gap between the connecting cylinder (6.2) and the central connecting pipe (6.3), the horizontal rod (9.5) is pressed down, and the horizontal rod (9.5) drives the limiting support (9) to move downward. The downward movement of the limiting support can release the locking of the protective cover, so that the protective cover is abutted to the breather pipe under the action of the first elastic piece.

[0020] Further, the inner surface of the protective cover is provided with a recess corresponding to the limiting support. The recess can reduce the interference between the protective cover and the limiting support as much as possible during sliding.

[0021] Further, the inner surface of the protective cover is further provided with a positioning recess, and the limiting support abuts against the side wall of the positioning recess when the protective cover is in the open state. By providing the positioning recess, the limiting support does not necessarily abut against the edge of the protective cover, so that the position of the limiting support can be set more freely and flexibly.

[0022] Preferably, the first elastic member is a coil spring, the lower surface of the shell or the fixing seat is provided with a first guide column, the lower surface of the protective cover is provided with a second guide column, and the two ends of the first elastic member are sleeved on the first guide column and the second guide column respectively. Preferably, the second elastic member is a coil spring, the limiting support is provided with a third guide column, the connecting cylinder is provided with a fourth guide column, and the two ends of the second elastic member are sleeved on the third guide column and the fourth guide column respectively. By providing the guide columns, the installation of the coil spring is facilitated and the stability of the coil spring is maintained.

[0023] Further, the fixing seat is provided with a guide strip and / or a guide groove, and the protective cover is provided with a guide groove and / or a guide strip matched with the fixing seat. By providing the guide strip and / or the guide groove, the stable and reliable sliding installation of the protective cover on the sliding cover mounting seat can be ensured.

[0024] Further, the outer surface of the protective cover is further provided with an anti-skid groove. The anti-skid groove facilitates the user to operate the protective cover, so as to slide the protective cover to be opened.

[0025] Compared with the prior art, the beneficial effects of the present application are:

[0026] The present application is simple to use and convenient to operate, and can effectively protect the air outlet of the breathing machine, prevent the air outlet and other pipelines such as the internal water tank of the breathing machine from being polluted by external dust and bacteria, and the like. The protective cover can be automatically reset under the action of the elastic member to protect the air outlet of the breathing machine, and prevent the user from forgetting to cover the protective cover due to the original operation habit after using the breathing machine, thereby affecting the working effect of the protection device. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a working schematic diagram of the prior breathing machine;

[0028] Figure 2 is a middle cross-sectional schematic diagram of the sliding protection device for the air outlet of the breathing machine of the present application;

[0029] Figure 3 is Figure 2 is an enlarged view of the area in the circle;

[0030] Figure 4 is a schematic view of the position of the rod of the limiting support of the breathing machine outlet port sliding protection device of the present application (the protective cover is in the closed state);

[0031] Figure 5 is Figure 4 is an enlarged view of the area in the circle;

[0032] Figure 6 is a schematic view of the intermediate partial section of the breathing machine outlet port sliding protection device of the present application (the protective cover is in the closed state);

[0033] Figure 7 is a schematic view of the position of the rod of the limiting support of the breathing machine outlet port sliding protection device of the present application (the protective cover is in the closed state);

[0034] Figure 8 is a schematic view of the position of the rod of the limiting support of the breathing machine outlet port sliding protection device of the present application (the protective cover is in the closed state);

[0035] Figure 9 is a schematic view after connecting the ventilation tube;

[0036] Figure 10 is Figure 9 is an enlarged view of the area in the circle;

[0037] Figure 11 is a partial top view after removing the protective cover;

[0038] Figure 12 is a partial bottom view after removing the protective cover;

[0039] Figure 13 is a schematic view of the protective cover (top view);

[0040] Figure 14 is a schematic view of the protective cover (bottom view);

[0041] Figure 15 is a schematic view of the limiting support;

[0042] Figure 16 is a schematic view of a deformation example of the limiting support;

[0043] Figure 17 is a sectional view of the first inclined wedge block;

[0044] Figure 18 is a schematic view of a deformation example of the protective cover;

[0045] Figure 19is a partial view of the protective cover in the open state (another limit support deformation example).

[0046] Fig. 1 - upper cover, 1.1 - fixed seat, 1.1.1 - opening, 1.1.2 - guide slot, 1.1.3 - first guide 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 - air outlet assembly, 6.1 - through hole, 6.2 - connecting cylinder, 6.3 - central connecting pipe, 6.4 - guide hole, 6.5 - mounting hole, 6.6 - fourth guide column, 6.7 - second spiral spring, 6.8 - first inclined wedge block, 6.9 - gap, 6.10 - strip-shaped through slot, 7 - protective cover, 7.1 - guide strip, 7.2 - second guide column, 7.3 - anti-skid groove, 7.4 - first spiral spring, 7.5 - avoidance groove, 7.6 - positioning groove, 8 - breather pipe, 9 - limit support, 9.1 - rod, 9.2 - second inclined wedge block, 9.3 - third guide column, 9.4 - inclined surface, 9.5 - touch piece, 10 - mask. DETAILED DESCRIPTION

[0047] The application will be further described in detail below with reference to the accompanying drawings.

[0048] Referring to Figure 2 - Figure 17 A breathing machine air outlet sliding protection device, the breathing machine comprising a breathing machine main body and a breather pipe 8, the breathing machine main body comprising 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), and a fan assembly 3, a control panel 4, a water tank 5 and an air outlet assembly 6 are installed in the space formed by the upper cover 1 and the lower cover 2. When the breathing machine is in use, the breather pipe 8 is inserted into the air outlet assembly 6, and when the use is finished, the breather pipe 8 is pulled out of the air outlet assembly 6. The fan assembly 3 comprises a fan air inlet 3.1, a fan body 3.2 and a fan air outlet 3.3; the water tank 5 comprises 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, 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 breather pipe 8 through the air outlet assembly 6. The air outlet assembly 6 is the air outlet of the breathing machine.

[0049] Referring to Figure 2 - Figure 8The air outlet assembly 6 is located inside the upper cover 1 (i.e. below the upper cover 1), and comprises a connecting cylinder 6.2 and a central connecting pipe 6.3. One end of the connecting cylinder 6.2 is connected to the upper cover 1, and the other end is connected to the outer periphery of the central connecting pipe 6.3. There is a gap between the connecting cylinder 6.2 and the central connecting pipe 6.3. The end of the central connecting pipe 6.3 close to the upper cover 1 does not protrude from the upper cover 1. The lower end of the central connecting pipe 6.3 of the air outlet assembly 6 is in communication with the water tank air outlet 5.2, serving as the air outlet of the breathing machine. The air outlet assembly 6 provides a reliable mounting interface for the ventilation tube 8. The air outlet assembly 6 needs to have a certain rigidity, and is preferably made by one-piece molding.

[0050] Referring to Figure 2 - Figure 10 The upper cover 1 is provided with a fixing seat 1.1, and the fixing seat 1.1 is provided with a protective cover 7 which is slidably arranged on the fixing seat 1.1. The fixing seat 1.1 is fixedly connected with the upper cover 1, and can be integrally formed with the upper cover 1, or can be formed as a separate component and then assembled and connected with the upper cover 1. The fixing seat 1.1 is generally in the form of a cuboid which protrudes from the upper cover 1. The fixing seat 1.1 is provided with an opening 1.1.1 corresponding to the air outlet assembly 6. Correspondingly, when the fixing seat 1.1 is integrally formed with the upper cover 1, the opening 1.1.1 is provided on the upper cover 1. When the fixing seat 1.1 is separately connected and assembled with the upper cover 1, it can be understood that the fixing seat 1.1 and the upper cover 1 are both provided with the opening 1.1.1, and the openings of the two correspond to each other. Alternatively, only the opening 1.1.1 is provided on the upper cover 1, and the fixing seat 1.1 is arranged on one side of the opening 1.1.1 (not shown in the figure). The length of the fixing seat 1.1 does not extend above the opening 1.1.1 of the cover shell. In this case, the fixing seat 1.1 does not need to be additionally provided with an opening. The protective cover 7 has an open state and a closed state. When the protective cover 7 is in the closed state, the protective cover 7 covers (closes) the opening 1.1.1. When the protective cover 7 is in the open state, the air outlet assembly 6 is exposed, and the ventilation tube 8 can be connected to the air outlet assembly 6 through the opening 1.1.1. The outer surface of the protective cover 7 is further provided with an anti-skid groove 7.3. The anti-skid groove 7.3 facilitates the user to operate the protective cover 7, so as to slide the protective cover 7 open. It should be noted that in the above embodiment, the fixing seat 1.1 is arranged to protrude from the upper cover 1. However, those skilled in the art can understand that the fixing seat 1.1 can be arranged on the inner surface of the upper cover 1, or even the fixing seat 1.1 can be a plate-shaped component located inside the upper cover 1, as long as the fixing seat 1.1 can provide sliding positioning and guiding for the protective cover 7.

[0051] In order to facilitate the protective cover 7 to automatically restore to the closed state, the lower surface of the fixed seat 1.1 is provided with a first guide column 1.1.3, the lower surface of the protective cover 7 is provided with a second guide column 7.2, and the two ends of the first spiral spring 7.4 (an example of the first elastic member) are sleeved on the first guide column 1.1.3 and the second guide column 7.2 respectively. In order to facilitate the first spiral spring 7.4 to pass through, the side of the air outlet assembly 6 is provided with a through hole 6.1. The first spiral spring 7.4 can apply a restoring force to the protective cover 7 to restore to the closed state, and when the breathing machine is in an unused state, the first spiral spring 7.4 can ensure that the protective cover 7 is always in the closed state, that is, the protective cover 7 will be in the state of closing the opening 1.1.1 of the fixed seat 1.1.

[0052] The two sides of the fixed seat 1.1 are provided with guide grooves 1.1.2, and the protective cover 7 is provided with guide strips 7.1 matched with the fixed seat 1.1. By arranging the guide strips and the guide grooves, the protective cover 7 can be stably and reliably slidably installed on the sliding cover mounting seat 1.1. Those skilled in the art can understand that the guide strips 7.1 can also be arranged on the fixed seat 1.1, and the guide grooves 1.1.2 can be arranged on the protective cover 7, as long as the protective cover 7 can be stably slid relative to the fixed seat 1.1.

[0053] In order to make the protective cover 7 automatically restore to the closed state, the breathing machine of the present application further comprises an elastic limiting assembly automatically responding to the action of inserting the air inlet pipe 8 into the air outlet assembly 6. The elastic limiting assembly mainly comprises a second elastic member, a limiting support and a first inclined wedge block.

[0054] The limiting support 9 comprises two mutually parallel rod members 9.1 and a second inclined wedge 9.2 connected between the two rod members 9.1; the connecting cylinder 6.2 is provided with a guide hole 6.4, and the rod members 9.1 of the limiting support 9 penetrate through the guide hole 6.4, so that the limiting support 9 is reliably and slidably connected with the air outlet assembly 6; the limiting support 9 is provided with a third guide post 9.3, the connecting cylinder 6.2 is provided with a fourth guide post 6.6, and the two ends of the second spiral spring 6.7 are respectively sleeved on the third guide post 9.3 and the fourth guide post 6.6, and the second spiral spring 6.7 is used to apply a spring force for moving the limiting support 9 towards the protective cover 7; the spring force direction of the first spiral spring 7.4 and the spring force direction of the second spiral spring 6.7 are perpendicular to each other. The connecting cylinder 6.2 is provided with a penetrating mounting hole 6.5, and a first inclined wedge 6.8 matched with the second inclined wedge 9.2 is penetratingly arranged in the mounting hole 6.5 (usually, a biasing spring (not shown) needs to be arranged to prevent the first inclined wedge 6.8 from falling off from the mounting hole 6.5); when the protective cover 7 is in an open state, the air outlet assembly 6 is in an exposed state, and the protective cover 7 is locked (limited) by abutting against the limiting support 9 under the action of the first spiral spring 7.4; in response to the insertion of the breather pipe 8 into the gap 6.9 between the connecting cylinder 6.2 and the central connecting pipe 6.3, the first inclined wedge 6.8 can slide in the mounting hole 6.5. By arranging the inclined wedges, when the breather pipe 8 is inserted into the gap 6.9, the breather pipe 8 presses the first inclined wedge 6.8 to move, and the movement of the first inclined wedge 6.8 will cause the limiting support 9 to move downwards, and the movement of the limiting support 9 can release the locking of the protective cover 7, so that the protective cover 7 abuts against the breather pipe 8 under the action of the first spiral spring 7.4, and when the breather pipe 8 is removed, the protective cover 7 will automatically return to the closed state under the action of the first spiral spring 7.4. In order to ensure that the first inclined wedge 6.8 will move under the action of the breather pipe 8, usually, the part of the first inclined wedge 6.8 located in the gap 6.9 is a round head or an inclined surface, so as to move in response to the insertion action of the breather pipe 8.

[0055] In an embodiment, the limiting support 9 does not necessarily comprise two mutually parallel rod members 9.1, but can only comprise one rod member 9.1, as shown in Figure 16 .

[0056] Preferably, as shown in Figure 14 , the inner surface of the protective cover 7 is provided with a relief groove 7.5 corresponding to the limiting support 9. The arrangement of the relief groove 7.5 can reduce the mutual interference between the protective cover 7 and the limiting support 9 as much as possible during the sliding process, and the relief groove 7.5 is not a through groove, as shown in Figure 14As shown, the avoidance groove 7.5 does not extend to the edge of the protective cover 7 from left to right. Correspondingly, the end of the limiting support 9 close to the protective cover 7 has an inclined surface 9.4, when the protective cover 7 is in the process of opening sliding, the limiting support 9 is in the avoidance groove 7.5, the inclined surface 9.4 of the limiting support 9 helps the limiting support 9 to escape from the avoidance groove 7.5 and finally abuts against the right edge of the protective cover 7 to achieve the locking of the protective cover 7 (as shown in Figure 8 ).

[0057] In the above embodiment, the limiting support 9 abuts against the right edge of the protective cover 7 to achieve the locking of the opening state of the protective cover 7. In another embodiment, as shown, the inner surface of the protective cover 7 is also provided with a positioning groove 7.6, when the protective cover 7 is in the opening state, the limiting support 9 abuts against the side wall of the positioning groove 7.6. By setting the positioning groove 7.6, the limiting support 9 does not have to abut against the edge of the protective cover 7, so that the position of the limiting support 9 can be set more freely. Figure 18

[0058] The working principle of the sliding protective cover of the breathing machine of the present application is as follows: when the breathing machine is not working, the protective cover 7 covers the air outlet assembly 6 under the action of the first spiral spring 7.4, as shown in Figure 3 , Figure 5 In this state, the protective cover 7 protects the air outlet and internal pipeline of the breathing machine from being polluted by external pollutants.

[0059] The user pushes the anti-skid groove 7.3 on the protective cover 7 backward to make the protective cover 7 slide backward to expose the air outlet assembly 6 of the breathing machine, and after the protective cover 7 slides to the rear of the limiting support 9, the upper end of the limiting support 9 abuts against the limiting, and after the anti-skid groove 7.3 is released, the protective cover 7 will not rebound, as shown in Figure 8 At this time, the protective cover 7 is in the opening state, the opening 1.1.1 is not blocked, and the air outlet assembly 6 is in the exposed state.

[0060] The user inserts the ventilation tube 8, and during the insertion process, the front end of the ventilation tube 8 will push the first inclined wedge block 6.8 outward, and the first inclined wedge block 6.8 will move backward. Since the second inclined wedge block 9.2 and the first inclined wedge block 6.8 cooperate with each other, the first inclined wedge block 6.8 drives the second inclined wedge block 9.2 to move downward, so that the limiting of the protective cover 7 is released, the limiting support 9 is located below the protective cover 7, and the protective cover 7 will slide forward under the action of the first spiral spring 7.4 and abut against the ventilation tube 8, as shown in Figure 9 - Figure 10

[0061] ​​When the user stops using the breathing machine and removes the ventilation tube 8, the protective cover 7 will continue to slide forward under the action of the first spiral spring 7.4 to completely cover the opening 1.1.1, playing a protective role for the breathing machine air outlet assembly 6. At this time, the protective cover 7 is in a closed state, and the opening 1.1.1 is shielded by the protective cover 7, so that the air outlet assembly 6 is in a non-exposed state.

[0062] In another embodiment, as shown in Figure 19 The elastic limiting assembly is provided with a limiting support 9, and the limiting support 9 is provided with a triggering piece 9.5. The connecting barrel 6.2 is provided with a strip-shaped through slot 6.10, and the triggering piece 9.5 penetrates through the strip-shaped through slot 6.10, and the end of the triggering piece 9.5 is located in the gap 6.9 between the connecting barrel 6.2 and the center connecting pipe 6.3. The triggering piece 9.5 is preferably a rod-shaped piece. When the ventilation tube 8 is inserted into the gap 6.9, the ventilation tube 8 will push the triggering piece 9.5 to move downward in the strip-shaped through slot, and the movement of the triggering piece 9.5 naturally drives the limiting support 9 to move, and the movement of the limiting support 9 can release the locking of the protective cover 7, so that the protective cover 7 abuts against the ventilation tube 8 under the action of the first spiral spring 7.4, so as to achieve the purpose that the limiting support 9 releases the locking of the protective cover 7 in response to the insertion of the ventilation tube 8 into the air outlet assembly 6. Of course, those skilled in the art can understand that other possible ways can also be used to achieve the technical effect that the limiting support 9 releases the locking of the protective cover 7 in response to the action of the ventilation tube 8 inserted into the air outlet assembly 6.

[0063] The embodiments of the present application are described above in combination with the drawings, and the embodiments and features in the embodiments 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 and not limited. 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 outlet sliding protection device, comprising a breathing machine body and a ventilation tube (8), the breathing machine body comprising a fan, an outlet assembly and a shell, the fan being provided with a fan air inlet (3.1) and a fan air outlet (3.3), the 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 outlet assembly (6) is located in the shell, the shell is provided with a fixing seat (1.1), and the fixing seat (1.1) is slidably provided with a protection cover (7); further comprising a first elastic member and an elastic limiting assembly, when the protection cover (7) is opened, the elastic limiting assembly moves upward to lock the protection cover (7); when the ventilation tube (8) is inserted into the outlet assembly (6), the elastic limiting assembly is triggered to move downward to release the locking of the protection cover (7), so that the protection cover (7) abuts against the ventilation tube (8) under the action of the first elastic member, and when the ventilation tube (8) is removed from the outlet assembly (6), the protection cover (7) is closed under the action of the first elastic member; one end of the elastic member is connected to the protection cover (7), and the other end is connected to the shell or the fixing seat (1.1); the elastic limiting assembly comprises a second elastic member and a limiting support (9), and the second elastic member is used for applying an elastic force to make the limiting support (9) move towards the protection cover (7); the limiting support (9) is slidably arranged on the outlet assembly (6), one end of the second elastic member is connected to the limiting support (9), and the other end is connected to the outlet assembly (6), and the elastic force direction of the second elastic member is perpendicular to the elastic force direction of the first elastic member. the shell is provided with an opening (1.1.1) corresponding to the outlet assembly (6); when the protection cover (7) is opened, the opening (1.1.1) is not blocked, so that the outlet assembly (6) is in an exposed state; when the protection cover (7) is closed, the opening (1.1.1) is blocked, so that the outlet assembly (6) is in a non-exposed state.

2. The sliding protection device for the outlet of a breathing machine according to claim 1, characterized in that, the outlet assembly (6) comprises a connecting cylinder (6.2) and a central connecting pipe (6.3), one end of the connecting cylinder (6.2) is connected to the shell, the other end is connected to the outer periphery of the central connecting pipe (6.3), there is a gap between the connecting cylinder (6.2) and the central connecting pipe (6.3), and the end of the central connecting pipe (6.3) close to the shell does not protrude from the shell.

3. The sliding protection device for the outlet of a breathing machine according to claim 1, characterized in that, the connecting cylinder (6.2) is provided with a guide hole (6.4), and the limiting support (9) penetrates through the guide hole (6.4).

4. The sliding protection device for the outlet of a breathing machine according to claim 3, characterized in that, the connecting cylinder (6.2) is provided with an opening in the cylinder wall, a movable triggering member penetrates through the opening, and the end of the triggering member is located in the gap between the connecting cylinder (6.2) and the central connecting pipe (6.3).

5. The sliding protection device for the outlet of a breathing machine according to claim 3 or 4, characterized in that, ​ 6. The sliding protection device for the outlet of a breathing machine according to claim 5, characterized in that, The trigger is a first inclined wedge block (6.8), and the limiting support (9) is provided with a second inclined wedge block (9.2) matched with the first inclined wedge block (6.8), when the ventilation pipe (8) is inserted into the gap between the connecting cylinder (6.2) and the central connecting pipe (6.3), the ventilation pipe (8) triggers the first inclined wedge block (6.8) to slide in the horizontal direction in the opening, so as to drive the second inclined wedge block (9.2) to drive the limiting support (9) to move downward.

7. The sliding protection device for the outlet of a breathing machine according to claim 6, characterized in that, The limiting support (9) comprises two parallel rod members (9.1), and the second inclined wedge block (9.2) is connected between the two rod members (9.1).

8. The sliding protection device for the outlet of a breathing machine according to claim 5, characterized in that, The opening is a vertical strip-shaped through slot (6.10), the trigger is a horizontal rod (9.5) arranged on the limiting support (9) and capable of moving up and down along the strip-shaped through slot (6.10), when the ventilation pipe (8) is inserted into the gap between the connecting cylinder (6.2) and the central connecting pipe (6.3), the horizontal rod (9.5) is pressed downward, and the horizontal rod (9.5) drives the limiting support (9) to move downward.

9. The sliding protection device for the outlet of a breathing machine according to claim 1, characterized in that, The inner surface of the protective cover (7) is provided with a recess (7.5) corresponding to the limiting support (9).

10. The sliding protection device for the outlet of a breathing machine according to claim 5, characterized in that, The inner surface of the protective cover (7) is further provided with a positioning recess (7.6), when the protective cover (7) is in the open state, the limiting support (9) abuts against the side wall of the positioning recess (7.6).

11. The sliding protector of the breathing machine outlet according to claim 1, characterized in that, The first elastic member is a spiral spring, the lower surface of the shell or the fixing seat is provided with a first guide column (1.1.3), the lower surface of the protective cover (7) is provided with a second guide column (7.2), and the two ends of the first elastic member are sleeved on the first guide column (1.1.3) and the second guide column (7.2) respectively.

12. The sliding protection device for the outlet of a breathing machine according to claim 3, characterized in that, The second elastic member is a spiral spring, the limiting support (9) is provided with a third guide column (9.3), the connecting cylinder (6.2) is provided with a fourth guide column (6.6), and the two ends of the second elastic member are sleeved on the third guide column (9.3) and the fourth guide column (6.6) respectively.

13. The sliding protector of the breathing machine outlet according to claim 1, characterized in that, The fixing seat (1.1) is provided with a guide strip (7.1) and / or a guide groove (1.1.2), and the protective cover (7) is provided with a guide groove (1.1.2) and / or a guide strip (7.1) matched with the fixing seat (1.1).

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