Air outlet device
By employing a snap-fit structure and anti-fall-off components in the air outlet equipment, the problem of the face mask falling off under earthquakes or external forces is solved, achieving the suspension and fixation of the face mask, preventing injury to people or damage to equipment, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO GONEO ELECTRIC APPLIANCE CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-14
AI Technical Summary
When existing air supply equipment is subjected to earthquakes or external forces, the face shield is prone to falling off the ceiling, which may cause injury to people or damage to other objects.
The mask and the housing are connected by a snap-fit structure, and an anti-drop structure is installed between the mask and the housing. The anti-drop structure is located in the housing when the mask is detached, so that the mask is suspended in the housing and prevents it from falling.
It effectively prevents the mask from falling off during earthquakes or external forces, reducing the risk of injury or damage from falling objects, and has low maintenance costs, ensuring normal operation of the equipment.
Smart Images
Figure CN224498593U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of bathroom equipment technology, and in particular to an air outlet device. Background Technology
[0002] An air vent installed in the bathroom can function as a heating device. By mounting the air vent on the bathroom ceiling, it blows out warm air when turned on, providing warmth for people taking showers.
[0003] Existing air supply equipment consists of a face shield and a housing. The housing is installed inside the ceiling, and the face shield is installed on the ceiling and connected to the housing. However, in the event of an earthquake or other external force, the face shield and housing of existing air supply equipment are prone to detachment, causing the face shield to fall directly from the ceiling, injuring people or being damaged by other objects. Utility Model Content
[0004] The main purpose of this application is to propose an air outlet device that aims to solve the problem that face masks are prone to falling off the ceiling, injuring people or being damaged by other objects.
[0005] To achieve the above objectives, the air outlet device proposed in this application includes a mask and a housing, wherein the housing is installed on the ceiling.
[0006] The air outlet device is also provided with a buckle structure and an anti-drop structure. The buckle structure is configured to engage and connect the face mask and the housing. The anti-drop structure is located between the face mask and the housing. The anti-drop structure is configured such that when the face mask detaches from the housing, the anti-drop structure is confined to the housing, so that the face mask is suspended from the housing.
[0007] In some embodiments, the snap-fit structure includes a snap-fit part and a snap-fit groove. The snap-fit part is disposed in one of the face mask and the housing, and the snap-fit groove is disposed in the other of the face mask and the housing. The snap-fit part is inserted into the snap-fit groove along the height direction of the housing and snaps into the snap-fit groove.
[0008] In some embodiments, the latching portion includes a main body and a latching tongue. The main body extends along the height direction of the housing and is configured to be inserted into the engagement groove. The latching tongue is located on the outer side wall of the main body and protrudes outward. The latching tongue is configured to engage with the inner wall of the engagement groove.
[0009] In some embodiments, the engaging groove is configured for insertion of the main body portion, and the inner wall of the engaging groove is provided with a stop protrusion configured to engage with the latch.
[0010] In some embodiments, the latch has a first tilt angle and a second tilt angle, with a plane perpendicular to the cross-section of the main body as a reference plane. The first tilt angle is the interior angle formed by the reference plane and the guide slope; the second tilt angle is the interior angle formed by the reference plane and the exit slope; the first tilt angle is greater than the second tilt angle.
[0011] In some embodiments, the anti-drop structure is provided on the face mask, and the anti-drop structure has an elastic extension that extends out of the box body; when the face mask is detached from the box body by an external force, the elastic extension is deformed by the weight of the face mask and hooks onto the box body, so that the face mask is suspended from the box body.
[0012] In some embodiments, the housing is provided with a through-slot corresponding to the anti-drop structure; the elastic extension includes two locking feet, which pass through the same through-slot, and the two locking feet extend or bend away from the center of the through-slot.
[0013] In some embodiments, the anti-fall structure also has a collar, and the side of the face shield facing the housing has a raised structure, with the collar fitted onto the raised structure.
[0014] In some embodiments, the ceiling is provided with mounting holes, and the box is embedded in the mounting holes; the edge of the box is provided with a positioning ring, and the positioning ring abuts against the side of the ceiling facing the mask.
[0015] In some embodiments, the positioning ring is provided with multiple connecting holes, and the corresponding position of the ceiling is provided with a through hole. The connecting holes communicate with the through hole to allow fasteners to pass through. The fasteners are configured to lock the positioning ring to the ceiling.
[0016] The technical solution of this application employs a cabinet mounted on the ceiling, with the face mask connected to the cabinet via a snap-fit structure. An anti-fall structure is installed between the face mask and the cabinet, configured such that when the face mask detaches from the cabinet, it remains within the cabinet, suspending the face mask there. Thus, in the event of an earthquake or other external force, the face mask is prevented from falling from the ceiling, reducing the likelihood of it falling and injuring people or being damaged by other objects. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0018] Figure 1 A schematic diagram of the structure of an embodiment of the air outlet device provided in this application;
[0019] Figure 2 A top view of an embodiment of the air outlet device provided in this application;
[0020] Figure 3 An exploded structural diagram of an embodiment of the air outlet device provided in this application;
[0021] Figure 4 for Figure 3 A magnified view of a section at point A1;
[0022] Figure 5 for Figure 3 A magnified view of a section at point A2 in the middle;
[0023] Figure 6 for Figure 3 A magnified view of a section at point B1;
[0024] Figure 7 for Figure 3 A magnified view of a section at point B2;
[0025] Figure 8 A partial structural schematic diagram of an embodiment of the face shield in the air outlet device provided in this application;
[0026] Figure 9 for Figure 8 A magnified view of a section at point C.
[0027] Explanation of icon numbers:
[0028] 100. Air outlet device; 10. Face mask; 11. Raised structure; 20. Housing; 21. Through slot; 22. Positioning ring; 221. Connection hole;
[0029] 30. Snap-fit structure; 31. Snap-fit part; 32. Main body; 33. Snap tongue; 34. Guide slope; 35. Exit slope; 36. Snap-fit groove; 37. Stop ring;
[0030] 40. Anti-fall structural components; 41. Elastic extension section; 42. Clip; 43. Ring; 101. Suspended ceiling;
[0031] 102. Mounting hole; 103. Through hole.
[0032] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0034] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only configured to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0035] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are merely for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.
[0036] An air vent installed in the bathroom can function as a heating device. By mounting the air vent on the bathroom ceiling, it blows out warm air when turned on, providing warmth for people taking showers.
[0037] Existing air supply equipment consists of a face shield and a housing. The housing is installed inside the ceiling, and the face shield is installed on the ceiling and connected to the housing. However, in the event of an earthquake or other external force, the face shield and housing of existing air supply equipment are prone to detaching, causing the face shield to fall directly from the ceiling and injure people.
[0038] This application discloses an air outlet device 100. Please refer to [link / reference needed]. Figure 1 , Figure 2 and Figure 3In one embodiment of this application, the air outlet device 100 proposed in this application includes a mask 10 and a housing 20, with the housing 20 installed on the ceiling 101.
[0039] Please see Figure 2 , Figure 6 and Figure 7 The air outlet device 100 is also provided with a snap-fit structure 30 and an anti-drop structure 40. The snap-fit structure 30 is configured to snap the mask 10 and the housing 20 together. The anti-drop structure 40 is located between the mask 10 and the housing 20. The anti-drop structure 40 is configured such that when the mask 10 is detached from the housing 20, the anti-drop structure 40 is limited to the housing 20 so that the mask 10 is suspended in the housing 20.
[0040] The air outlet device 100 can be a heater, a bathroom heater, etc. In one embodiment, the air outlet device 100 is a bathroom heater. The bathroom heater's housing 20 is installed on the ceiling 101, and the face mask 10 is fastened to the housing 20 by a snap-fit structure 30, so that the face mask 10 is fixed to the ceiling 101. Furthermore, by installing an anti-fall structure 40 between the face mask 10 and the housing 20, when an earthquake or external force is encountered, the snap-fit structure 30 between the face mask 10 and the housing 20 fails, and the face mask 10 detaches from the housing 20; at this time, the anti-fall structure 40 installed on the face mask 10 can reliably hook or limit it on the housing 20, so that the face mask 10 is suspended and does not fall, thereby reducing the possibility of the face mask 10 falling and injuring people.
[0041] The anti-fall structure 40 can be a hook or suspension hook structure. Specifically, multiple hooks or suspension hook structures with suspension ropes are provided on opposite sides of the face mask 10, and corresponding hanging rings are provided at corresponding positions on the housing 20 to prevent the hooks from falling off. When an earthquake or external force occurs, the face mask 10 separates from the housing 20, and the suspension ropes on the hooks are pulled downwards as the face mask 10 falls. At this time, the hooks or suspension hook structures are pulled by the suspension ropes and slide onto the hanging rings on the housing 20. The diameter of the hanging rings is small to prevent the hooks or suspension hook structures from detaching from the housing 20. The face mask 10 is held by the suspension ropes and suspended below the ceiling 101, thus preventing the face mask 10 from falling and injuring people. The hooks or suspension hook structures can be designed as L-shaped hooks or J-shaped hooks.
[0042] The anti-fall structure 40 can also be a connecting strap, safety rope, chain, etc., so that one end can be connected to the mask 10 and the other end can be connected to the housing 20.
[0043] The anti-fall structural component 40 can also be an elastic limiting plate, a retaining spring, etc. Part of the elastic limiting plate is installed on the face mask 10, and another part of the elastic limiting plate extends outward through the through hole on the side of the housing 20 and bends outward through elastic rebound. Alternatively, part of the retaining spring is installed on the face mask 10, and another part of the retaining spring extends outward through the through hole on the side of the housing 20 and bends outward through elastic rebound. When an earthquake or external force is encountered, the elastic limiting plate or retaining spring can still be limited and locked on the housing 20 by elastic deformation under the pull of the weight of the face mask 10, thereby ensuring that the face mask 10 hangs below the housing 20 and does not fall and injure people.
[0044] The technical solution of this application involves mounting the housing 20 onto the ceiling 101, with the face mask 10 connected to the housing 20 via a snap-fit structure 30. The face mask 10 can be directly snapped onto the housing 20 without a conversion frame and is fixed below the ceiling 101, thus eliminating the obstruction of a protruding conversion frame and improving aesthetics. Furthermore, an anti-fall structure 40 is installed between the face mask 10 and the housing 20. This anti-fall structure 40 is configured such that when the face mask 10 detaches from the housing 20, it remains within the housing 20, suspending the face mask 10. In the event of an earthquake or external force, the face mask 10 is prevented from falling from the ceiling 101 by the anti-fall structure 40, reducing the likelihood of the face mask 10 falling and injuring people or being damaged by other objects.
[0045] During the process of triggering the anti-fall structure 40 to limit the position of the box 20, no manual intervention is required. This is suitable for environments with limited visibility inside the ceiling and ensures that even if the buckle structure 30 fails, the mask 10 can still be suspended below the box 20 to avoid falling from a height.
[0046] Furthermore, since the mask 10 is suspended below the ceiling 101, it is not easily damaged by other objects. This makes it convenient to reinstall the mask 10 later by simply snapping it onto the housing 20. This reduces maintenance costs and greatly ensures the normal operation of the air outlet equipment 100.
[0047] In one embodiment, the ceiling 101 is a plaster ceiling. The air outlet device 100 is installed on the plaster ceiling. Since the plaster ceiling has limited load-bearing capacity, the mask 10 and the housing 20 are connected by a snap-fit structure 30, eliminating the need for a conversion frame and thus reducing the load applied to the plaster ceiling by the air outlet device 100.
[0048] To further improve the vibration resistance and impact resistance of the air outlet equipment 100, please refer to... Figure 3 , Figure 4 and Figure 5The snap-fit structure 30 includes a snap-fit part 31 and a snap-fit groove 36. The snap-fit part 31 is provided in one of the face mask 10 and the box 20, and the snap-fit groove 36 is provided in the other of the face mask 10 and the box 20. The snap-fit part 31 is inserted into the snap-fit groove 36 along the height direction of the box 20 and snaps into the snap-fit groove 36. The snap-fit part 31 that snaps into the face mask 10 or the box 20 has a protruding structure to resist the force of earthquake on the face mask 10 and the box 20, and also improves the resistance of the face mask 10 and the box 20 to external impact.
[0049] Please see Figure 3 The latching part 31 includes a main body 32 and a latching tongue 33. The main body 32 extends along the height direction of the housing 20 and is configured to be inserted into the latching groove 36. The latching tongue 33 is provided on the outer side wall of the main body 32 and protrudes outward. The latching tongue 33 is configured to latch with the inner wall of the latching groove 36.
[0050] In one embodiment, a snap-fit part 31 is provided on the face mask 10, and a corresponding snap-fit groove 36 is provided on the housing 20. The snap-fit part 31 has a main body part 32 extending along the height direction of the housing 20, and the snap-fit groove 36 is correspondingly provided as a groove structure with a certain depth so that the snap-fit part 31 can be inserted into the snap-fit groove 36.
[0051] When the snap-fit part 31 is inserted into the corresponding snap-fit groove 36 of the housing 20, the main body part 32 can serve as a guide post to accurately align and install the face mask 10 onto the housing 20, reducing adjustment time during installation. The main body part 32 can be a cylindrical structure or a square column.
[0052] In order for the latch 33 to engage in the engagement groove 36, the engagement groove 36 is configured for the main body 32 to be inserted, and the inner wall of the engagement groove 36 is provided with a stop protrusion 37 configured to engage with the latch 33.
[0053] When connecting the face mask 10 to the housing 20, simply push the face mask 10 vertically towards the housing 20, and the latch 33 will automatically compress and deform upon contact with the inner wall of the engagement groove 36. After the engagement part 31 is inserted into place, the latch 33 will automatically spring open and lock at the stop protrusion 37, thus completing the connection between the face mask 10 and the housing 20 without complicated operations or additional tools.
[0054] Please see Figure 8 and Figure 9 To prevent the snap-fit part 31 from easily detaching from the snap-fit groove 36 and to ensure the snap-fit between the mask 10 and the housing 20, the snap-fit tongue 33 has a first tilt angle ∠d and a second tilt angle ∠e. The plane perpendicular to the cross-section of the main body part 32 is used as the reference plane. The first tilt angle ∠d is the interior angle formed by the reference plane and the guide slope 34. The second tilt angle ∠e is the interior angle formed by the reference plane and the exit slope 35. The first tilt angle ∠d is greater than the second tilt angle ∠e.
[0055] The first tilt angle ∠d has a range of greater than or equal to 60° and less than 90°. The second tilt angle ∠e has a range of greater than 0° and less than or equal to 40°. This configuration allows the locking part 31 to be smoothly pushed into the locking groove 36. When the air outlet device 100 encounters an earthquake or external force, the locking part 31, by exiting the inclined surface 35 and abutting against the stop ring 37, is not easily dislodged from the locking groove 36, thus ensuring the secure connection between the mask 10 and the housing 20.
[0056] In one embodiment, the first tilt angle ∠d is 60 degrees and the second tilt angle ∠e is 40 degrees. The first tilt angle ∠d is greater than the second tilt angle ∠e, which makes installation easier and removal more difficult, so as to ensure that the snap-fit part 31 is not easily disengaged from the snap-fit groove 36.
[0057] To keep the face mask 10, which has detached from the housing 20, below the ceiling 101, an anti-fall structure 40 is provided on the face mask 10. The anti-fall structure 40 has an elastic extension 41 extending outside the housing 20. When the face mask 10 is detached from the housing 20 by external force, the elastic extension 41 deforms under the weight of the face mask 10 and hooks onto the housing 20, thus suspending the face mask 10 above the housing 20. During the process of triggering the elastic extension 41 of the anti-fall structure 40 to hook onto the housing 20, no manual intervention is required, and it ensures that even if the latching structure 30 fails, the face mask 10 can still be suspended below the housing 20, preventing it from falling from a height.
[0058] The anti-fall structure 40 can be an L-shaped spring clip structure. The elastic extension 41 of the L-shaped spring clip structure extends out of the box 20 and bends and extends by elastic rebound force. When the L-shaped spring clip structure falls due to the gravity of the mask 10, the bent part of the elastic extension 41 is stuck in the through hole 21 of the box 20, so that the L-shaped spring clip structure is limited on the box 20 and no longer falls. Thus, the L-shaped spring clip structure limits and pulls the falling mask 10, so that the mask 10 is suspended and does not fall directly to the ground, making it less likely to be damaged by other objects.
[0059] In one embodiment, the anti-fall structure 40 is a snap ring.
[0060] Please see Figure 2 , Figure 6 and Figure 7 In order to ensure that the anti-fall structure 40 is limited within the housing 20, the housing 20 is provided with a through-slot 21 corresponding to the anti-fall structure 40; the elastic extension 41 includes two locking feet 42, which pass through the same through-slot 21, and the two locking feet 42 are respectively extended or bent toward the center away from the through-slot 21.
[0061] In one embodiment, the two locking feet 42 pass through the same through-slot 21, facilitating installation; and the two locking feet 42 are respectively extended or bent away from the center of the through-slot 21. Simply inserting the two locking feet 42 into the same through-slot 21 completes the operation of limiting the anti-fall structure 40 to the box body 20, ensuring that the anti-fall structure 40 can be installed relatively quickly in the environment of a high and narrow plaster ceiling.
[0062] The two inner side walls of the housing 20 are also provided with through slots corresponding to the through holes, so that the two locking feet 42 can extend from the inside of the housing 20 to the outside.
[0063] The locking foot 42 can be configured as an L-shaped spring clip structure or a J-shaped hook structure, etc.
[0064] Furthermore, a limiting structure is provided at the ends of the two locking feet 42 away from the collar 43. The limiting structure can be a bent positioning ring structure or a J-shaped hook structure, etc.
[0065] When an earthquake or external force occurs, the mask 10 separates from the housing 20. Under the weight of the mask 10, the anti-fall structure 40 is pulled, and the bent parts of the two locking feet 42 can be locked into the through slot 21, so that the anti-fall structure 40 is hooked under the housing 20, thereby allowing the anti-fall structure 40 to pull the falling mask 10, and the mask 10 is suspended below the ceiling 101 and no longer falls.
[0066] In some implementations, please refer to Figure 6 The anti-fall structure 40 also has a collar 43. The face shield 10 has a raised structure 11 on the side facing the box 20, and the collar 43 is fitted onto the raised structure 11.
[0067] The protruding structure 11 can be configured as a protrusion with a fixing hole. The protrusion protrudes from the edge of the mask 10. The collar 43 of the anti-drop structure 40 can be inserted into the fixing hole so that the anti-drop structure 40 is limited on the mask 10.
[0068] In one embodiment, the protruding structure 11 is configured as a hook structure with a locking slot. The collar 43 of the anti-drop structure 40 is inserted into the locking slot of the hook structure, thus limiting the anti-drop structure 40 to be mounted on the hook structure, thereby completing the step of installing the anti-drop structure 40 onto the face mask 10, which is convenient. Furthermore, the hook structure can limit the anti-drop structure 40, making it difficult for the anti-drop structure 40 to detach from the face mask 10.
[0069] In one embodiment, the two opposite first sides of the face mask 10 are provided with a total of four latching portions 31. The two opposite second sides of the face mask 10 are each provided with an anti-fall structure 40, and the first side and the second side are adjacent to each other.
[0070] Furthermore, when installing the face mask 10 onto the housing 20, the two locking feet 42 of the anti-drop structure 40 on both sides of the face mask 10 need to be extended out of the through holes 21 on both sides of the housing 20, and then the four locking parts 31 of the face mask 10 are pushed into the four locking slots 36 on the housing 20, thereby completing the step of installing the face mask 10 onto the housing 20.
[0071] To install the housing 20 onto the ceiling 101, and to allow the face mask 10 to be directly attached via the snap-fit structure 30 without the need for a conversion frame, please refer to [link to relevant documentation]. Figure 3 The ceiling 101 has mounting holes 102, and the housing 20 is embedded in the mounting holes 102. The edge of the housing 20 is provided with a positioning ring 22, which abuts against the side of the ceiling 101 facing the mask 10. The housing 20 is directly fixed to the ceiling 101 by the positioning ring 22, and the edge of the mask 10 can be directly engaged with the housing 20 by the snap-fit structure 30, so that the mask 10 is fixed below the ceiling 101 without the need for a conversion frame.
[0072] Specifically, the positioning ring 22 is provided with multiple connecting holes 221, and the corresponding position of the ceiling 101 is provided with a through hole 103. The connecting holes 221 communicate with the through hole 103 so that fasteners can pass through. The fasteners are configured to lock the positioning ring 22 to the ceiling 101.
[0073] In one embodiment, the fastener is a screw. The positioning ring 22 of the housing 20 is mounted to the side of the ceiling 101 facing the face shield 10 by screws.
[0074] The locking groove 36 has a stop protrusion 37 located at the positioning ring 22, and the locking part 31 is located at the edge of the face mask 10. This facilitates the locking of the face mask 10 with the positioning ring 22, and the locking of the face mask 10 with the housing 20. The face mask 10 can be installed below the ceiling 101 without the need for a conversion frame, thus making the ceiling 101 more aesthetically pleasing without the obstruction of a protruding conversion frame.
[0075] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.
Claims
1. An air outlet device (100), characterized in that, Includes a face mask (10) and a housing (20), the housing (20) being mounted on a ceiling (101); The air outlet device (100) is also provided with a snap-fit structure (30) and an anti-drop structure (40), wherein the snap-fit structure (30) is configured to snap the mask (10) and the housing (20) together; The anti-drop structure (40) is disposed between the face mask (10) and the housing (20). The anti-drop structure (40) is configured such that when the face mask (10) is detached from the housing (20), the anti-drop structure (40) is confined to the housing (20) so that the face mask (10) is suspended in the housing (20).
2. The air outlet device (100) as described in claim 1, characterized in that, The buckle structure (30) includes a snap-fit part (31) and a snap-fit groove (36). The snap-fit part (31) is provided in one of the face mask (10) and the box body (20), and the snap-fit groove (36) is provided in the other of the face mask (10) and the box body (20). The snap-fit part (31) is inserted into the snap-fit groove (36) along the height direction of the box body (20) and snaps into the snap-fit groove (36).
3. The air outlet device (100) as described in claim 2, characterized in that, The latching part (31) includes a main body (32) and a latch (33). The main body (32) extends along the height direction of the housing (20) and is configured to be inserted into the latching groove (36). The latch (33) is provided on the outer side wall of the main body (32) and protrudes outward. The latch (33) is configured to engage with the inner wall of the latching groove (36).
4. The air outlet device (100) as described in claim 3, characterized in that, The engaging groove (36) is configured for insertion of the main body (32), and the inner wall of the engaging groove (36) is provided with a stop ring (37) configured to engage with the latch (33).
5. The air outlet device (100) as described in claim 3, characterized in that, The latch (33) has a guide ramp (34) and an exit ramp (35), the guide ramp (34) being configured to guide the latch (33) into the engagement groove (36); The latch (33) has a first tilt angle and a second tilt angle; taking the plane perpendicular to the cross-section of the main body (32) as the reference plane, the first tilt angle is the interior angle formed by the reference plane and the guide slope (34); the second tilt angle is the interior angle formed by the reference plane and the exit slope (35); the first tilt angle is greater than the second tilt angle.
6. The air outlet device (100) as described in any one of claims 1 to 5, characterized in that, The anti-drop structure (40) is provided on the face mask (10), and the anti-drop structure (40) has an elastic extension (41) extending out of the box body (20); When the mask (10) is detached from the box (20) by an external force, the elastic extension (41) is deformed by the weight of the mask (10) and hooked onto the box (20), so that the mask (10) is suspended from the box (20).
7. The air outlet device (100) as described in claim 6, characterized in that, The housing (20) is provided with a through hole (21) corresponding to the anti-drop structure (40); the elastic extension (41) includes two locking feet (42), the two locking feet (42) pass through the same through hole (21), and the two locking feet (42) extend or bend away from the center of the through hole (21).
8. The air outlet device (100) as described in claim 6, characterized in that, The anti-fall structure (40) also has a collar (43), and the face mask (10) has a protruding structure (11) on the side facing the box (20), and the collar (43) is fitted onto the protruding structure (11).
9. The air outlet device (100) as described in any one of claims 1 to 5, characterized in that, The ceiling (101) is provided with mounting holes (102), and the box (20) is embedded in the mounting holes (102); the box (20) is provided with positioning rings (22) along its edge, and the positioning rings (22) abut against the side of the ceiling (101) facing the mask (10).
10. The air outlet device (100) as described in claim 9, characterized in that, The positioning ring (22) is provided with a plurality of connecting holes (221), and the ceiling (101) is provided with a through hole (103) at the corresponding position. The connecting holes (221) communicate with the through hole (103) so that fasteners can pass through. The fasteners are configured to lock the positioning ring (22) to the ceiling (101).