Air nozzle assembling and fixing structure

Abstract

The utility model provides a tuyere assembling and fixing structure which comprises a shell, an air inlet is formed in one end of the shell, an annular first connecting part is arranged on the side wall of the shell, an air outlet is formed in the first connecting part, a main air channel communicated with the air inlet and the air outlet is formed in the shell, and a plurality of air outlets are formed in the main air channel. The shell is further provided with a detachably-connected auxiliary part, one end of the auxiliary part is provided with a second connecting part detachably connected with the first connecting part, the other end of the auxiliary part is provided with a plurality of air outlet holes communicated with the air outlet, and the first connecting part is provided with a guide groove. The second connecting part is provided with a sliding block strip corresponding to the guide groove, the air nozzle and different auxiliary parts are connected and fixed through sliding clamping of the sliding block strip and the guide groove, a user can replace the needed auxiliary parts at will to achieve different hairdressing modeling effects, the connecting structure is simple, disassembly is convenient and flexible, and the user experience feeling is better.

Description

Technical Field

[0001] This utility model belongs to the field of hair dryer nozzle technology, specifically relating to a nozzle assembly and fixing structure. Background Technology

[0002] With the diversification of hair dryer functions and people's pursuit of beauty, nozzles used in conjunction with hair dryers have emerged. By connecting different nozzles to the air outlet of the hair dryer or attaching different accessories to the nozzles, people can change the airflow effect and thus achieve their desired hair styling. However, the connection structure between the nozzle and accessories in the current technology still has the following problems: 1. The common connection structure is mostly a snap-on method, which is prone to wear and tear if frequently replaced, making the connection unstable and the accessories easy to fall off the nozzle; 2. Magnetic connection is used, but this method is easy to fall off under slight force, and the stability is not strong; 3. The connection structure is complex and inconvenient to disassemble and assemble. Therefore, in order to meet people's different styling needs, the nozzle connection structure needs to be improved. Utility Model Content

[0003] (1) Technical problems to be solved

[0004] This utility model provides a nozzle assembly and fixing structure, which aims to solve the problems in the prior art where the connection between the nozzle and auxiliary parts cannot be disassembled or replaced, the connection is unstable, or disassembly and assembly are inconvenient.

[0005] (2) Technical solution

[0006] This utility model provides a nozzle assembly and fixing structure, including a housing, an air inlet at one end of the housing, an annular first connecting part on the side wall, an air outlet inside the first connecting part, a main air duct inside the housing that communicates with the air inlet and the air outlet respectively, and a detachable auxiliary component on the housing. One end of the auxiliary component has a second connecting part that is detachably connected to the first connecting part, and the other end has a plurality of air outlet holes that communicate with the air outlet.

[0007] The first connecting part has symmetrically arranged guide grooves on its outer peripheral wall, and a "U"-shaped first abutment part that is connected to the open ends of the two guide grooves respectively. The second connecting part has a "U"-shaped second abutment part corresponding to the first abutment part, and a slider bar corresponding to the guide groove is provided on the inner wall of the free end of the second abutment part.

[0008] Furthermore, the guide groove has a guide groove slope at its open end, and the slider bar has a sliding incline at its free end. Both the guide groove slope and the sliding incline guide the slider bar as it slides in.

[0009] Further, the other end of the first connecting part opposite to the first abutting part is provided with a U-shaped convex arc, the outer wall of the second connecting part is provided with a step one corresponding to the convex arc, and the convex arc and the step one slide abut.

[0010] Further, the inner wall of the second abutting part is provided with a step two, and the bottom surface of the step two and the top surface of the first abutting part abut when the sliding block strip and the guide groove slide and connect.

[0011] Further, the first connecting part comprises an inner shell and an outer shell, and the inner shell and the outer shell jointly enclose the annular air outlet.

[0012] The shell is provided with a flow guide piece with an annular opening, the top of the annular opening is matched and abuts with the bottom of the inner shell, and the bottom of the flow guide piece is screwed with the inner wall of the shell.

[0013] Further, one end of the flow guide piece close to the air inlet is provided with a flow guide curved surface, and the two sides of the flow guide curved surface are provided with a plurality of flow guide arc plates corresponding to the air outlet, the flow guide arc plates divide the main air duct into a plurality of flow channels, and the flow channels are respectively communicated with the air inlet and the air outlet.

[0014] Further, one end of the flow guide arc plate is arranged along the height direction of the flow guide piece, and the other end is arranged along the length direction of the flow guide piece.

[0015] Further, the flow guide piece is internally provided with a blind cavity surrounded by the annular opening, the blind cavity has a gathering effect on the heat transmitted to the flow guide piece, so as to reduce the temperature of the shell.

[0016] Further, the air inlet of the shell is provided with a detachable annular connecting seat, the inner wall of the connecting seat is provided with a plurality of buckles, and the outer wall of the shell at the air inlet is provided with a clamping groove corresponding to the buckle.

[0017] Further, the auxiliary part is provided with a plurality of bristles arranged along the direction of the air outlet, and the bristles are arranged at intervals with the air outlet.

[0018] Compared with the prior art, the beneficial effects of the utility model lie in:

[0019] An assembly fixing structure is arranged to realize the effects of connection and use of the air nozzle with different auxiliary parts and random disassembly and assembly, specifically, a first connecting part is arranged at the air outlet of the shell, a guide groove is arranged on the first connecting part, a second connecting part is arranged on the auxiliary part, a sliding block strip corresponding to the guide groove is arranged on the second connecting part, and the air nozzle is connected and fixed with the different auxiliary parts through the sliding block strip and the guide groove, so that the user can randomly replace the required auxiliary part to realize different hair styling effects, the connection structure is simple, convenient and flexible to disassemble, and the user experience is better. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is an overall structure schematic diagram of the utility model.

[0021] Figure 2 It is an overall structure explosion drawing of the utility model.

[0022] Figure 3 It is an auxiliary part structure schematic diagram of the utility model.

[0023] Figure 4 It is an overall structure cross section of the utility model Figure 1 .

[0024] Figure 5 It is a guide groove inclined surface schematic diagram of the utility model.

[0025] Figure 6 It is an A place enlarged view of the utility model Figure 3 .

[0026] Figure 7 It is a shell explosion drawing of the utility model.

[0027] Figure 8 It is a schematic diagram of the upper shell and the lower shell connecting structure of the utility model.

[0028] Figure 9 It is an overall structure cross section of the utility model Figure 2 .

[0029] Figure 10 It is an overall structure cross section of the utility model Figure 3 .

[0030] Figure 11 It is a local cross section view of the connecting seat and the shell connection of the utility model.

[0031] Reference numerals: 1-Shell, 11-Air inlet, 12-Air outlet, 13-First connecting part, 131-Guide groove, 1311-Guide groove slope, 132-First abutting part, 133-Convex arc, 134-Inner shell, 135-Outer shell, 14-Main air duct, 15-Slot one, 16-Upper shell, 161-Slot two, 17-Lower shell, 171-Snap two, 2-Auxiliary component, 21 - Second connecting part, 211- Second abutting part, 212- Sliding strip, 2121- Sliding inclined surface, 213- Step 1, 214- Step 2, 22- Air outlet, 23- Brush bristles, 24- Concave surface, 25- Arc surface structure, 3- Flow guide, 31- Annular opening, 32- Flow guide curved surface, 33- Flow guide arc plate, 331- Flow channel, 34- Blind cavity, 4- Connecting seat, 41- Buckle 1. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0033] like Figures 1-3 As shown, this utility model provides a nozzle assembly and fixing structure, including a housing 1. One end of the housing 1 has an air inlet 11, and the side wall has an annular first connecting portion 13. An air outlet 12 is provided within the first connecting portion 13, thus the air outlet 12 is arranged at a right angle to the air inlet 11. The housing 1 has a main air duct 14 that communicates with both the air inlet 11 and the air outlet 12. The housing 1 also has a detachably connected auxiliary component 2, one end of which has a second connecting portion 21 that is detachably connected to the first connecting portion 13. The other end is provided with a plurality of air outlet holes 22 that communicate with the air outlet 12. Therefore, the airflow from the air outlet 12 will flow out through the air outlet holes 22. Different air outlet holes 22 will have different effects on the airflow. In this embodiment of the present invention, the auxiliary component 2 is only used as one of the auxiliary tools. When the auxiliary component 2 is not needed, it can be disassembled. At this time, it can be used as one of the states in which the present invention is connected to the hair dryer. At this time, the air volume and speed flowing out from the air outlet 12 are large, and the effect on drying hair is excellent.

[0034] In another embodiment, without changing the connection structure of the second connecting part 21, the user can freely connect other different auxiliary parts 2 according to their own needs to achieve the hair styling requirements, so that one hair dryer nozzle can be used for multiple types of auxiliary parts 2, making it more convenient to use, more cost-effective, and providing a better user experience.

[0035] The outer peripheral wall of the first connecting part 13 is provided with symmetrically arranged guide grooves 131, and the first connecting part 13 is further provided with "U"-shaped first abutting parts 132 respectively connected with the opening ends of the two guide grooves 131, and the second connecting part 21 is provided with "U"-shaped second abutting parts 211 corresponding to the first abutting parts 132, and the free end inner wall of the second abutting part 211 is provided with sliding block strips 212 corresponding to the guide grooves 131, and the sliding connection of the guide grooves 131 and the sliding block strips 212 can realize the connection of the auxiliary part 2 and the shell 1.

[0036] When assembled, the auxiliary part 2 is placed at the front end of the first connecting part 13, and the free end of the sliding block strip 212 is gradually slid backward towards the opening end of the guide groove 131, and when the sliding block strip 212 is completely accommodated in the guide groove 131, the second abutting part 211 abuts against the top surface of the first abutting part 132, so as to further make the abutting of the two parts more closely, so as to prevent the airflow from flowing out of the joint gap and affecting the use effect. Figure 4 As shown in the second abutting part 211, the inner wall is provided with a step two 214 facing the first abutting part 132, and when the sliding block strip 212 is slidably connected with the guide groove 131, the bottom surface of the step two 214 abuts against the top surface of the first abutting part 132, and the second abutting part 211 is sleeved on the outer peripheral wall of the first abutting part 132, so as to make the connection of the two parts more closely, and at this time, the auxiliary part 2 cannot be slid backward, and the auxiliary part 2 is limited, the structure is simple and reasonable, and the practicability is stronger;

[0037] Further, as shown in the second abutting part 211, the inner wall is provided with a step two 214 facing the first abutting part 132, and when the sliding block strip 212 is slidably connected with the guide groove 131, the bottom surface of the step two 214 abuts against the top surface of the first abutting part 132, and the second abutting part 211 is sleeved on the outer peripheral wall of the first abutting part 132, so as to make the connection of the two parts more closely, and at this time, the auxiliary part 2 cannot be slid backward, and the auxiliary part 2 is limited, the structure is simple and reasonable, and the practicability is stronger; Figure 4 Further, as shown in the second abutting part 211, the inner wall is provided with a step two 214 facing the first abutting part 132, and when the sliding block strip 212 is slidably connected with the guide groove 131, the bottom surface of the step two 214 abuts against the top surface of the first abutting part 132, and the second abutting part 211 is sleeved on the outer peripheral wall of the first abutting part 132, so as to make the connection of the two parts more closely, and at this time, the auxiliary part 2 cannot be slid backward, and the auxiliary part 2 is limited, the structure is simple and reasonable, and the practicability is stronger;

[0038] When disassembled or replaced, the auxiliary part 2 is slid forward along the opening end of the guide groove 131, which is convenient and flexible.

[0039] Further, as shown in the second abutting part 211, the inner wall is provided with a step two 214 facing the first abutting part 132, and when the sliding block strip 212 is slidably connected with the guide groove 131, the bottom surface of the step two 214 abuts against the top surface of the first abutting part 132, and the second abutting part 211 is sleeved on the outer peripheral wall of the first abutting part 132, so as to make the connection of the two parts more closely, and at this time, the auxiliary part 2 cannot be slid backward, and the auxiliary part 2 is limited, the structure is simple and reasonable, and the practicability is stronger; Figure 5As shown, in order to make the user more accurately and quickly guide the slider bar 212 into the guide groove 131, a guide groove inclined surface 1311 is arranged on the opening end of the guide groove 131, which makes the opening end of the guide groove 131 wider, so that even if the auxiliary part 2 is slightly inclined with the first connecting part 13, the slider bar 212 can be smoothly guided into the guide groove 131 under the guidance of the guide groove inclined surface 1311.

[0040] Preferably, as Figure 6 As shown, the free end of the slider bar 212 is provided with a sliding inclined surface 2121, and since the opening end of the guide groove 131 is provided with the "U"-shaped first abutting part 132, the sliding inclined surface 2121 at the free end of the slider bar 212 can be matched with the "U"-shaped surface of the first abutting part 132, and under the guidance of the sliding inclined surface 2121, the slider bar 212 can be smoothly guided into the guide groove 131 along the "U"-shaped surface. It should be noted that the clamping of the slider bar 212 and the guide groove 131 is relatively tight, and without the action of external force, it will not automatically slide, and the user can drive the slider bar 212 to slide by slightly applying force with the hands, thereby realizing the clamping and fixing effect.

[0041] Preferably, the second connecting part 21 is provided with a concave surface 24 corresponding to the position of the slider bar 212, which can reduce the friction with the first connecting part 13, and the user can more easily assemble the auxiliary part 2 to the shell 1 or replace different auxiliary parts 2, making the assembly more labor-saving.

[0042] Further, as Figure 7 As shown, the first connecting part 13 includes an inner shell 134 and an outer shell 135, which together enclose the air outlet 12 in a ring shape, so that the airflow is blown out in a ring shape, and the shell 1 is provided with a flow guide 3 with a ring-shaped opening 31, the top of the ring-shaped opening 31 is matched and abuts with the bottom of the inner shell 134, and the bottom of the flow guide 3 is screwed with the inner wall of the shell 1, and the screw is screwed and fixed from the inside of the flow guide 3 to the shell 1, so that the screw cannot be seen from the outside with the naked eye, thereby making the shell 1 look more beautiful.

[0043] Preferably, as Figure 8As shown, in order to facilitate the disassembly of the flow guide 3, the shell 1 is provided with a detachable structure in the embodiment of the utility model, comprising upper shell 16 and lower shell 17, a plurality of clamping grooves two 161 are arranged on the upper shell 16, a plurality of buckles two 171 corresponding to the clamping grooves two 161 are arranged in the lower shell 17, the upper shell 16 and the lower shell 17 can be connected by the clamping of the clamping grooves two 161 and the buckles two 171. The air outlet 12 is arranged on the upper shell 16, when the flow guide 3 needs to be disassembled, the upper shell 16 and the lower shell 17 can be separated first, and then the flow guide 3 can be taken out from the inside of the shell 1.

[0044] Further, as shown in the drawings, Figure 7 The flow guide 3 is internally provided with a blind cavity 34 surrounded by the annular opening 31, the airflow cannot flow out of the blind cavity 34 nor flow into the blind cavity 34, on the contrary, when the hot air function is used, heat will flow from the side wall of the flow guide 3 and the inner wall of the shell 1 to the air outlet 12, the flow guide 3 and the shell 1 will continuously heat up, since the inside of the flow guide 3 is the blind cavity 34, the heat can diffuse into the blind cavity 34, that is, the heat transferred to the flow guide 3 has a gathering effect, so that the heat transferred to the shell 1 is reduced to reduce the temperature of the shell 1, so as to avoid the risk of high temperature scalding; in addition, since the air in the blind cavity 34 is static, the heat will gather here, thereby promoting the heating of the flow guide 3, and strengthening the utilization of hot air, and the setting of the blind cavity 34 can also save materials and reduce costs.

[0045] Further, as shown in the drawings, Figure 9 The end of the flow guide 3 close to the air inlet 11 is provided with a flow guide curved surface 32, and the two sides of the flow guide curved surface 32 are provided with a plurality of flow guide arc plates 33 corresponding to the air outlet 12, the flow guide arc plates 33 divide the main air duct 14 into a plurality of flow channels 331, and the flow channels 331 are respectively communicated with the air inlet 11 and the air outlet 12. The setting of the flow guide curved surface 32 can reduce the convection of airflow, when the airflow enters the main air duct 14 from the air inlet 11, a large amount of airflow will flow to the side wall of the flow guide 3 and the inner wall of the shell 1 under the action of the flow guide curved surface 32, and then uniformly flows to the air outlet 12 from each flow channel 331 under the shunting of the flow guide arc plate 33, so that the air volume of the annular air outlet 12 is uniform.

[0046] It needs to be explained that, since the shell 1 is a tubular structure, the auxiliary part 2 of the utility model embodiment is also an arc surface structure 25 which is matched with the shell 1, the area of the arc surface structure 25 is greater than the area of the surface of the first connecting part 13, and the second connecting part 21 has a certain distance to the air outlet hole 22, so that a certain cavity is formed in the auxiliary part 2, therefore, when the airflow flows from the air outlet 12 to the auxiliary part 2, the airflow is first quickly accumulated in the cavity, until the cavity is filled and then uniformly flows out from each air outlet hole 22, so the original air outlet area is expanded due to the influence of the structure of the auxiliary part 2, so that the drying efficiency is faster. Since the air outlet hole 22 is a circular small hole arranged at intervals, the blown airflow is more uniform, which is very beneficial to maintaining the hair styling after ironing, and the airflow can quickly penetrate the hair roots to dry the hair.

[0047] Further, as shown in Figure 10 The one end of the plurality of guide arc plates 33 is sequentially and spaced arranged along the height direction of the guide part 3, and the other end is sequentially and spaced arranged along the length direction of the guide part 3, so that the guide arc plate 33 is curved and extended from the air inlet 11 to the air outlet 12, changes the flow direction of the airflow, and makes the airflow blow out from the side wall of the shell 1.

[0048] Further, as shown in Figure 10 The auxiliary part 2 is provided with a plurality of bristles 23 which are spaced apart along the direction of the air outlet 12, and the bristles 23 are spaced apart from the air outlet hole 22. By arranging the bristles 23, the hair can be blown along the direction of the bristles 23 during drying or styling, and the hair can become more smooth after drying or styling. The bristles 23 can directly contact the scalp and support the hair from the roots, so that the airflow directly blows to the roots of the hair, greatly improves the drying or styling effect, and avoids the step of pulling the hair with hands by the user, so that the effect of fast drying or styling can be realized by one hand, and the use is more flexible and convenient.

[0049] Further, as shown in Figure 11As shown, the air inlet 11 of the shell 1 is provided with a detachable annular connecting seat 4, one end of the connecting seat 4 is connected with the shell 1, the other end is connected with a hair dryer (not shown in the drawing), a plurality of buckles 41 are arranged on the inner wall of the connecting seat 4, and a plurality of buckle grooves 15 corresponding to the buckles 41 are arranged on the outer wall of the shell 1 located at the air inlet 11, and the connecting seat 4 and the shell 1 are connected through the clamping of the buckles 41 and the buckle grooves 15. In the embodiment of the utility model, since the first connecting part 13 is arranged on the shell 1, when different auxiliary parts 2 need to be replaced, the shell 1 does not need to be removed from the hair dryer, thereby avoiding the wear of the buckles 41 and the buckle grooves 15 caused by frequent replacement of the auxiliary parts 2, so as to cause the connection to be not firm, in addition, the utility model sets the connection mode as sliding clamping, which is more convenient to replace, more durable and more practical.

[0050] The utility model discloses an innovation point is provided with an assembly fixed structure, realize the effect that the air nozzle is connected with different auxiliary parts and is randomly disassembled, and the specific performance is that the first connecting part is arranged at the air outlet of the shell, the first connecting part is equipped with the guide groove, and the second connecting part is arranged on the auxiliary part, the second connecting part is equipped with the slider strip corresponding with the guide groove, and the slider strip and the guide groove are slid and clamped to realize the connection and fixation of the air nozzle and different auxiliary parts, so that the user can randomly replace the auxiliary part needed to realize different hairdressing styling effects, the connection structure is simple, convenient and flexible to disassemble, and the user experience is better.

[0051] In addition, it should be understood that, although the present specification is described according to the embodiments, not every embodiment contains only one independent technical scheme, and the technical scheme in the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical scheme in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

[0052] For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A structure for assembling and fixing a blow nozzle, characterized by comprising: The application relates to a shell (1) provided with an air inlet (11) at one end, a ring-shaped first connecting part (13) on the side wall, an air outlet (12) in the first connecting part (13), a main air duct (14) in the shell (1) and communicating with the air inlet (11) and the air outlet (12) respectively, and an auxiliary part (2) detachably connected to the shell (1), wherein one end of the auxiliary part (2) is provided with a second connecting part (21) detachably connected to the first connecting part (13), and the other end is provided with a plurality of air outlets (22) communicating with the air outlet (12). The outer peripheral wall of the first connecting part (13) is provided with symmetrically arranged guide grooves (131), the first connecting part (13) is further provided with "U"-shaped first abutting parts (132) connected to the opening ends of the two guide grooves (131) respectively, the second connecting part (21) is provided with "U"-shaped second abutting parts (211) corresponding to the first abutting parts (132), and the free end inner wall of the second abutting part (211) is provided with sliding block strips (212) corresponding to the guide grooves (131).

2. The wind box assembly and fixation structure according to claim 1, wherein The opening end of the guide groove (131) is provided with a guide groove inclined surface (1311), the free end of the sliding block strip (212) is provided with a sliding-in inclined surface (2121), and the guide groove inclined surface (1311) and the sliding-in inclined surface (2121) have a guiding effect on the sliding-in of the sliding block strip (212).

3. The wind box assembly and fixation structure according to claim 2, wherein The other end of the first connecting part (13) opposite to the first abutting part (132) is provided with a "U"-shaped convex arc (133), the outer wall of the second connecting part (21) is provided with a first step (213) corresponding to the convex arc (133), and the convex arc (133) and the first step (213) slide and abut.

4. The wind box assembly and fixation structure according to claim 3, wherein The inner wall of the second abutting part (211) is provided with a second step (214), and when the sliding block strip (212) and the guide groove (131) slide and are connected, the bottom surface of the second step (214) and the top surface of the first abutting part (132) abut.

5. The wind box assembly and securing structure of claim 1, wherein The first connecting part (13) comprises an inner shell (134) and an outer shell (135), and the inner shell (134) and the outer shell (135) jointly enclose the annular air outlet (12). The shell (1) is provided with a flow guide part (3) with a ring-shaped opening (31), the top of the ring-shaped opening (31) is adapted to abut against the bottom of the inner shell (134), and the bottom of the flow guide part (3) is screwed to the inner wall of the shell (1).

6. The wind box assembly and securing structure of claim 5, wherein, The end of the flow guide part (3) close to the air inlet (11) is provided with a flow guide curved surface (32), the two sides of the flow guide curved surface (32) are provided with a plurality of flow guide arc plates (33) corresponding to the air outlet (12), the main air duct (14) is divided into a plurality of flow channels (331) by the flow guide arc plates (33), and the flow channels (331) respectively communicate with the air inlet (11) and the air outlet (12).

7. The wind box assembly and securing structure of claim 6, wherein, One end of each of the plurality of guide arc plates (33) is arranged in sequence and at intervals along the height direction of the guide member (3), and the other end is arranged in sequence and at intervals along the length direction of the guide member (3).

8. The wind box assembly and securing structure of claim 5, wherein, The guide member (3) is internally provided with a blind cavity (34) surrounded by the annular opening (31), and the blind cavity (34) has a gathering effect on the heat transferred to the guide member (3), so as to reduce the temperature of the shell (1).

9. The wind box assembly and securing structure of claim 1, wherein, The annular connecting seat (4) is detachably connected at the air inlet (11) of the shell (1), the inner wall of the connecting seat (4) is provided with a plurality of buckles (41), and the outer wall of the shell (1) located at the air inlet (11) is provided with a buckle groove (15) corresponding to the buckle (41).

10. The wind box assembly and securing structure of claim 1, wherein The auxiliary member (2) is provided with a plurality of bristles (23) arranged at intervals in the direction of the air outlet (12), and the bristles (23) are arranged at intervals with the air outlet hole (22).

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