A wind nozzle structure convenient for production and assembly

Abstract

The utility model discloses a kind of air nozzle structure convenient for production and assembly, including air nozzle body, the air nozzle body is equipped with limiting space, inner shell is equipped in the limiting space, air duct is equipped in the inner shell, the air duct is gradually narrowed from air inlet end to air outlet end, limiting structure for isolating inner shell outer wall and air nozzle body inner wall is equipped in limiting space;The air nozzle body includes the upper shell and lower shell of cooperation assembly, the lower shell is equipped with air inlet, the air inlet is communicated with the air inlet end of air duct, the upper shell is equipped with air outlet, the air outlet is communicated with air outlet end, using split type structure can make upper shell and lower shell have greater opening space forming internal structure, more conveniently stripping, and batch can be realized, to improve production efficiency, entire assembly process is also very fast.

Description

Technical Field

[0001] This utility model belongs to the technical field of hair dryer accessories, specifically a nozzle structure that is easy to produce and assemble. Background Technology

[0002] Hair dryers are commonly used tools for daily hair drying and styling. They are usually equipped with different types of nozzles, and the shapes of the nozzles are quite unique, resulting in irregular airflow channels inside the nozzle. In order to make the airflow smoother, structures such as baffles are usually set in the inner cavity of the nozzle. Even to prevent the nozzle surface temperature from getting too high, a separate heat insulation cavity is set. These structures cannot be molded as a single piece, which would cause inconvenience in production. If these parts were to be produced separately, the issue of improving assembly efficiency would need to be considered. Utility Model Content

[0003] The purpose of this invention is to provide a nozzle structure that is easy to manufacture and assemble, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A nozzle structure that is easy to manufacture and assemble includes a nozzle body, a limiting space in the nozzle body, an inner shell in the limiting space, an air duct in the inner shell, the air duct gradually narrows from the air inlet end to the air outlet end, and a limiting structure in the limiting space for isolating the outer wall of the inner shell from the inner wall of the nozzle body.

[0006] The nozzle body includes an upper shell and a lower shell that are assembled together. The lower shell is provided with an air inlet, which is connected to the air inlet end of the air duct. The upper shell is provided with an air outlet, which is connected to the air outlet end.

[0007] In a further technical solution, the upper shell surface is provided with a comb-tooth part and a hair-blocking part with an upper and lower drop, and a side-mounted air outlet is provided between the two. The airflow output from the air outlet is located above the hair-blocking part, and the end of the hair-blocking part away from the air outlet is provided with a transition surface facing the lower shell.

[0008] A further technical solution involves providing outwardly extending windbreak ridges along the width direction of the transition surface.

[0009] In a further technical solution, the bottom of both the hair-blocking part and the comb-tooth part are continuous smooth surfaces.

[0010] A further technical solution also includes locking end caps located on both sides of the lower shell and the upper shell. The locking end caps are detachably connected to the lower shell and the upper shell respectively, and the two sides of the windproof part protrude to form wind-gathering grooves.

[0011] A further technical solution includes a limiting structure comprising a plurality of limiting plates spaced apart on the inner side of the lower shell, the inner shell being positioned between the plurality of limiting plates and located on the inner side of the comb tooth portion and the hair blocking portion near the air outlet, and having a first limiting protrusion and a second limiting protrusion respectively; the outer edge of the inner shell near the air outlet having a first abutting portion and a second abutting portion, the first abutting portion and the second abutting portion being respectively close to and located between the first limiting protrusion and the second limiting protrusion; and an annular step being provided on the inner side of the lower shell near the air inlet, the annular step abutting against the lower end of the inner shell.

[0012] In a further technical solution, the volume of the limiting space is greater than the volume of the inner shell, forming a heat insulation cavity.

[0013] In a further technical solution, the nozzle has a T-shaped structure that is narrow at the bottom and wide at the top, and the inner shell has a T-shaped structure that is wide at the bottom and narrow at the top.

[0014] In a further technical solution, the inner shell includes an inner front shell and an inner rear shell, both of which are provided with a number of air guide plates, and the air guide plates of the two shells are connected in pairs.

[0015] A further technical solution is that the first contact part and the second contact part are designed to be at different heights, with the second contact part being higher than the first contact part.

[0016] The beneficial effects of this utility model are:

[0017] This utility model adopts a split structure, which allows the upper and lower shells to have larger opening spaces to form the internal structure, making demolding easier and enabling batch production to improve production efficiency. During assembly, the inner front shell and inner rear shell are first snapped together to form the inner shell. Then, the inner shell is placed into the lower shell, where a partial limiting structure is already formed to position the inner shell. The air inlet on the lower shell is aligned with the air inlet end of the inner shell. Finally, the upper shell is snapped together with the lower shell and fixed. Another limiting structure inside the upper shell will limit the upper part of the inner shell, thus completing the final positioning of the inner shell and completing the assembly. The air outlet in the upper shell is aligned with the air outlet end. The entire assembly process is also very quick.

[0018] In addition, by using a limiting structure to isolate the outer wall of the inner shell from the inner wall of the nozzle body, heat transfer can be reduced, thereby achieving a heat insulation effect.

[0019] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0020] Figure 1 The three-dimensional structure of this utility model Figure 1 .

[0021] Figure 2The three-dimensional structure of this utility model Figure 2 .

[0022] Figure 3 The disassembly structure of this utility model Figure 1 .

[0023] Figure 4 The disassembly structure of this utility model Figure 2 .

[0024] Figure 5 : Disassembly diagram of the inner shell structure of this utility model.

[0025] Figure 6 : Overall cross-sectional structural diagram of this utility model.

[0026] Figure 7 Schematic diagram of airflow in this utility model Figure 1 .

[0027] Figure 8 Schematic diagram of airflow in this utility model Figure 2 .

[0028] Figure 9 Schematic diagram of airflow in this utility model Figure 3 .

[0029] Figure 10 Schematic diagram of airflow in this utility model Figure 4 .

[0030] Reference numerals: 1-Air nozzle body, 11-Upper shell, 111-Comb teeth, 1111-Bottom plate, 1112-Comb teeth body, 112-Hair baffle, 113-Transition surface, 114-Wind baffle ridge, 12-Lower shell, 13-Air inlet, 14-Air outlet, 15-Locked end cap, 16-Air concentrator groove, 17-Insulation cavity, 2-Inner shell, 21-Air duct, 22-Air inlet end, 23-Air outlet end, 24-First contact part, 25-Second contact part, 26-Inner front shell, 27-Inner rear shell, 28-Air guide plate, 29-Slot, 31-Limiting plate, 32-First limiting ridge, 33-Second limiting ridge, 34-Connecting rib, 35-Limiting groove, 36-Annular step. Detailed Implementation

[0031] 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.

[0032] Please refer to Figure 1-8 ;

[0033] The nozzle structure described in this utility model is designed to facilitate production and assembly. In this embodiment, the nozzle body 1 is composed of a lower shell 12 and an upper shell 11. When the two are combined, a limiting space is formed inside. An inner shell 2 is provided in the limiting space, and an air duct 21 is provided in the inner shell 2. The air duct 21 gradually narrows from the air inlet end 22 to the air outlet end 23. A limiting structure for fixing the inner shell 2 is provided in the limiting space. In addition, an air inlet 13 is provided on the lower shell 12, which is connected to the air inlet end 22 of the air duct 21. An air outlet 14 is provided on the upper shell 11, which is connected to the air outlet end 23.

[0034] Therefore, the overall component in this embodiment consists of a lower shell 12, an upper shell 11, and an inner shell 2. The limiting structure not only limits the position of the inner shell 2 but also isolates the outer wall of the inner shell 2 from the inner wall of the nozzle body 1 to form a heat insulation structure. Structurally, it cannot be integrally molded. Therefore, the lower shell 12 and upper shell 11 adopt a split structure, which can be connected by snap-fit. During production, the lower shell 12, upper shell 11, and inner shell 2 are injection molded separately. Of course, the inner shell 2 can also be injection molded separately in half, consisting of an inner front shell 26 and an inner rear shell 27, and can be fixed by snap-fit. The split structure allows the upper shell 11 and lower shell 12 to have larger openings. The spatially formed internal structure facilitates demolding and enables mass production to improve efficiency. During assembly, the inner front shell 26 and inner rear shell 27 are first fastened together to form the inner shell 2. Then, the inner shell 2 is placed into the lower shell 12, where a partial limiting structure is already formed to position the inner shell 2. The air inlet 13 on the lower shell 12 is aligned with the air inlet end 22 of the inner shell 2. Finally, the upper shell 11 is fastened together with the lower shell 12. Another limiting structure inside the upper shell 11 limits the upper part of the inner shell 2, thus completing the final positioning of the inner shell 2. The air outlet 14 in the upper shell 11 is aligned with the air outlet end 23. The entire assembly process is also very quick.

[0035] In use, the nozzle body 1 is installed at the output end of the hair dryer, allowing airflow to enter from the air inlet 13 of the lower shell 12 and flow directly into the inner shell 2. Guided by the air duct 21, it flows from the air outlet 23 to the air outlet 14. The air duct 21 gradually narrows from the air inlet 22 to the air outlet 23, which can increase the internal air pressure and thus increase the flow rate. When hot air is input, the inner shell 2 has the largest contact area during the entire airflow process, so it will absorb a lot of heat and accumulate inside, resulting in a relatively large amount of heat generation. Therefore, by using a limiting structure to isolate the outer wall of the inner shell 2 from the inner wall of the nozzle body 1, heat transfer can be reduced, thereby achieving a heat insulation effect.

[0036] In this embodiment of the invention, the surface of the upper shell 11 is provided with a comb tooth portion 111 and a hair-blocking portion 112 with a vertical drop, and a side-mounted air outlet 14 is provided between the two. It should be noted that the vertical drop refers to a step at the junction of the two portions, and the remaining bottom surface of the comb tooth portion 111 can gradually become flush with the hair-blocking portion 112, or the bottom surface of the comb tooth portion 111 is entirely higher than the end face of the hair-blocking portion 112. The air outlet 14 is located at the boundary between the two portions. Preferably, the air outlet 14 is... The hair-blocking part 112 is elongated and arranged along its width. The airflow from the air outlet 14 is located above the hair-blocking part 112. The end of the hair-blocking part 112 away from the air outlet 14 is provided with a transition surface 113 facing the lower shell 12. When in use, the high-speed airflow output will create a negative pressure on the surface of the hair-blocking part 112, which will attract hair to its surface. The hair-blocking part 112 can be a plane or an inclined plane. Preferably, both the hair-blocking part 112 and the transition surface 113 are continuous and smooth surfaces, which can make the hair transition smoother.

[0037] Furthermore, a windproof protrusion 114 extending outward is provided along the width direction of the transition surface 113. The end face of the windproof protrusion 114 forms an extended surface. The windproof part 112, the transition surface 113 and the windproof protrusion 114 form a longer windproof structure. In addition, the windproof protrusion 114 can also increase the strength of the transition surface 113.

[0038] In this embodiment, the comb tooth part 111 is composed of a base plate 1111 (a part of the surface of the upper shell 11) and a plurality of comb tooth bodies 1112 formed on the base plate 1111. The arrangement of the plurality of comb tooth bodies 1112 can be arbitrary. In order to comb the hair more smoothly, both the hair blocking part 112 and the base plate adopt an arc surface design.

[0039] The comb tooth body 1112 of the comb tooth part 111 is basically arranged along the direction of the vertical base plate 1111, which can realize the upward and downward molding along the direction of the comb tooth body 1112, thereby ensuring the smoothness of the circumference of each comb tooth body 1112 and avoiding the generation of burrs that would cut the hair after batch injection molding.

[0040] In this embodiment of the invention, locking end caps 15 are also located on both sides of the lower shell 12 and the upper shell 11. The locking end caps 15 are detachably connected to the lower shell 12 and the upper shell 11, respectively. Wind-gathering grooves 16 are formed by protrusions on both sides of the hair-blocking portion 112. Figure 9 and Figure 10 As shown, the air concentrator 16 causes the airflow from the air outlet 14 to move forward in a parallel direction, thus preventing it from spreading to the sides. The end face of the wind deflector 114 changes the direction of the airflow after it adheres to the transition surface 113 and flows in a curved manner, so that it moves forward in a lateral direction.

[0041] One embodiment of the limiting structure of this utility model specifically includes a plurality of limiting plates 31 spaced apart on the inner side of the lower shell 12. The plurality of limiting plates 31 are respectively located on both sides to form clamping positions. After the inner shell 2 is placed in the clamping positions, it is fixed in the lower shell 12 by the limiting plates 31 on both sides. Preferably, a plurality of slots 29 are provided on the side wall of the inner shell 2. The plurality of slots 29 cooperate with the limiting plates 31 to further enhance the fixing effect. A first limiting protrusion 32 and a second limiting protrusion 33 are respectively provided on the inner side of the comb tooth part 111 and the hair blocking part 112 near the air outlet 14. The air outlet 14 is located between the first limiting protrusion 32 and the second limiting protrusion 33, and a limiting groove 35 is formed between the first limiting protrusion 32 and the second limiting protrusion 33. The outer edge of the inner shell 2 near the air outlet 23 is provided with a first abutment part 24 and a second abutment part 25 of different heights. Specifically, the second abutment part 25 is higher than the first abutment part 24. The first contact part 24 and the second contact part 25 are located inside the first limiting part and the second limiting part, respectively, forming a locking state. Preferably, the two ends of the first limiting protrusion 32 and the second limiting protrusion 33 are respectively provided with connecting ribs 34 to form a closed limiting groove 35, which is adapted to the shape of the inner shell 2 near the air outlet 23, further improving the limiting effect. It should be noted that the inner shell 2 can use a curved air duct 21 to seal the air outlet 23 with the air outlet 14. If the air outlet 23 is just an upward opening, the closed limiting groove 35 can be used to block the wind and prevent air leakage. In addition, the inner side of the lower shell 12 near the air inlet 13 is provided with an annular step 36, which abuts against the lower end of the inner shell 2. The inner shell 2 is positioned by the limiting structure 3, and the upper shell 11 and the annular step 36 clamp and fix the inner shell 2.

[0042] In this embodiment of the utility model, the volume of the limiting space is greater than the volume of the inner shell 2, and the nozzle is a T-shaped structure that is narrow at the bottom and wide at the top. The inner shell 2 is a T-shaped structure that is wide at the bottom and narrow at the top. This structure makes the internal space of the nozzle body 1 larger and forms a heat insulation cavity 17, so that the temperature of the outer wall of the nozzle body 1 is lower.

[0043] In this embodiment of the invention, the inner shell 2 is provided with several air guide plates 28. These air guide plates 28 re-divide the chaotic airflow into several directional small airflows, making the overall airflow smoother and the heat distribution more uniform. Furthermore, some of the air guide plates 28 have an arc-shaped structure. Especially given the aforementioned unique "T" shape, integral injection molding is very difficult. Therefore, a split structure is adopted, with the inner front shell 26 and inner rear shell 27 manufactured separately. The air guide plates 28 of the inner front shell 26 and the inner rear shell 27 are connected in pairs, combined... Figure 8As shown, this design creates multiple independent airflow channels in the inner shell 2, increasing laminar flow, reducing turbulence, reducing airflow energy loss, and simplifying the mold structure. It also enables mass production, improves production efficiency, and the snap-fit ​​installation makes assembly very convenient.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A nozzle structure that is easy to manufacture and assemble, characterized in that: Includes a nozzle body (1), the nozzle body (1) is provided with a limiting space, an inner shell (2) is provided in the limiting space, the inner shell (2) is provided with an air duct (21), the air duct (21) gradually narrows from the air inlet end (22) to the air outlet end (23), and the limiting space is provided with a limiting structure for isolating the outer wall of the inner shell (2) from the inner wall of the nozzle body (1); The nozzle body (1) includes an upper shell (11) and a lower shell (12) that are assembled together. The lower shell (12) is provided with an air inlet (13) which is connected to the air inlet end (22) of the air duct (21). The upper shell (11) is provided with an air outlet (14) which is connected to the air outlet end (23).

2. The nozzle structure according to claim 1, which is easy to manufacture and assemble, is characterized in that: The surface of the upper shell (11) is provided with a comb tooth part (111) and a hair blocking part (112) with an upper and lower drop. An air outlet (14) is provided between the two. The airflow output from the air outlet (14) is located above the hair blocking part (112). The end of the hair blocking part (112) away from the air outlet (14) is provided with a transition surface (113) facing the lower shell (12).

3. The nozzle structure according to claim 2, which is easy to manufacture and assemble, is characterized in that: A windbreak protrusion (114) extending outward is provided along the width direction of the transition surface (113).

4. The nozzle structure according to claim 2, which is easy to manufacture and assemble, is characterized in that: The bottom of both the hair-blocking part (112) and the comb-tooth part (111) are continuous smooth surfaces.

5. The nozzle structure according to claim 1, which is easy to manufacture and assemble, is characterized in that: It also includes locking end caps (15) located on both sides of the lower shell (12) and the upper shell (11), the locking end caps (15) being detachably connected to the lower shell (12) and the upper shell (11) respectively, and the two sides of the windproof part protruding to form wind-gathering grooves (16).

6. The nozzle structure according to claim 1, which is easy to manufacture and assemble, is characterized in that: The limiting structure includes a plurality of limiting plates (31) spaced apart on the inner side of the lower shell (12). The inner shell (2) is placed between the plurality of limiting plates (31) and is located on the inner side of the comb tooth part (111) and the hair blocking part (112) near the air outlet (14). A first limiting protrusion (32) and a second limiting protrusion (33) are respectively provided. A first contact part (24) and a second contact part (25) are provided on the outer edge of the inner shell (2) near the air outlet end (23). The first contact part (24) and the second contact part (25) are respectively close to and located between the first limiting protrusion (32) and the second limiting protrusion (33). An annular step (36) is provided on the inner side of the lower shell (12) near the air inlet (13). The annular step (36) abuts against the lower end of the inner shell (2).

7. The nozzle structure according to claim 6, which is easy to manufacture and assemble, is characterized in that: The first contact part (24) and the second contact part (25) are designed to be at different heights, and the second contact part (25) is higher than the first contact part (24).

8. The nozzle structure according to claim 1, which is easy to manufacture and assemble, is characterized in that: The volume of the limiting space is greater than the volume of the inner shell (2), forming a heat insulation cavity (17).

9. The nozzle structure according to claim 8, which is easy to manufacture and assemble, is characterized in that: The nozzle is a T-shaped structure that is narrow at the bottom and wide at the top, and the inner shell (2) is a T-shaped structure that is wide at the bottom and narrow at the top.

10. The nozzle structure according to claim 9, which is easy to manufacture and assemble, is characterized in that: The inner shell (2) includes an inner front shell (26) and an inner rear shell (27). Both the inner front shell (26) and the inner rear shell (27) are designed with several air guide plates (28), and the air guide plates (28) of the two are connected in pairs.

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