Hairdressing accessory

Abstract

The hairdressing accessory comprises a main body part, a flow guide body and a top cover, the main body part is in a hollow barrel shape, the flow guide body is arranged in the main body part, the top cover covers the top end of the main body part, the flow guide body is provided with an air inlet and an air outlet, and a slot extending in the length direction of the main body part is formed in the main body part; wherein the main body part comprises a flow guide part and a first wall connected with the flow guide part, the air outlet and the flow guide part are oppositely arranged, air flow exhausted from the air outlet is guided to the narrow groove through the flow guide part, the first wall comprises a negative pressure inclined plane approaching a first vertical plane where the central axis of the main body part is located from the narrow groove, and the narrow groove is located on one side of the first vertical plane. The slot is located above the negative pressure ramp, the negative pressure ramp is located downstream of the slot in the direction in which the airflow flows, and the slot is located upstream of a second vertical plane perpendicular to the first vertical plane. The negative pressure inclined plane is arranged on the accessory by utilizing the Venturi effect to realize the adsorption of hair, and the relative position of the accessory and the hair is moved to realize the anti-flying and anti-warping of the hair tip.

Description

Technical Field

[0001] The present application relates to the technical field of household hair care appliances, and in particular to a hairdressing accessory. Background Art

[0002] As people's living standards improve year by year, people pay more and more attention to hair care. As a common appliance in daily life, hair dryers are mainly used to dry hair and take care of it. At present, most hair dryers on the market generally only have the function of drying hair, which is difficult to meet users' needs for styling.

[0003] In order to solve the problem of hair styling limitations of hair dryers, hairdressing accessories used in conjunction with hair dryers have appeared on the market in recent years. In order to prevent the hair ends from flying off during the blow-drying process, the existing hairdressing accessories use the Coanda effect, so that the airflow discharged from the air outlet passes through a curved surface, thereby adsorbing the hair and preventing the hair ends from flying off by moving the relative position of the accessory and the hair. However, in this solution, in order to achieve the effect of adsorbing the hair, a curved surface is set on the accessory, and there are certain requirements for the curvature of the curved surface, which limits the structural design of the accessory. In addition, due to the limitations of the Coanda effect, when the accessory moves to the hair ends, the hair ends may stick to the curved surface, and the straightening effect on the hair ends needs to be improved. Summary of the invention

[0004] In order to solve the problem of single styling of hairdressing accessories in the prior art, the present application provides a hairdressing accessory, which utilizes the Venturi effect to set a negative pressure slope on the accessory to achieve adsorption of hair, and moves the relative position of the accessory and the hair to prevent the hair ends from flying around, prevent the hair ends from curling, and have a better straightening effect on the hair ends.

[0005] The present application is implemented in the following manner: The present application provides a hairdressing accessory, comprising a main body, a guide body and a top cover, the main body is a hollow cylinder, the guide body is arranged in the main body, the top cover is arranged at the top end of the main body, the guide body has an air inlet and an air outlet, and the main body is provided with a narrow groove extending along its length direction, wherein the main body comprises a guide part and a first wall connected to the guide part, the air outlet is arranged opposite to the guide part, the air flow discharged from the air outlet is guided to the narrow groove through the guide part, the first wall comprises a negative pressure inclined surface approaching from the narrow groove to a first vertical plane where the central axis of the main body is located, the narrow groove is located on one side of the first vertical plane, and the narrow groove is located above the negative pressure inclined surface; along the direction of air flow, the negative pressure inclined surface is located downstream of the narrow groove, and the narrow groove is located upstream of a second vertical plane perpendicular to the first vertical plane.

[0006] Preferably, the narrow slot comprises an air inlet end and an air outlet end, and a cross-sectional area of ​​the narrow slot gradually decreases from the air inlet end to the air outlet end.

[0007] Preferably, the width of the slot is not greater than 6 mm.

[0008] Preferably, the guide portion and the first wall have the same circumscribed circle, and the outer surface of the guide portion is on the circumference of the circumscribed circle.

[0009] Preferably, a plurality of comb teeth are arranged on the negative pressure inclined surface at intervals along its length direction, and channels for receiving airflow from the narrow slot are formed between adjacent comb teeth, and upper edges of the comb teeth are on the circumference of the circumscribed circle.

[0010] Preferably, the arc length of the outer surface of the guide portion accounts for 15% to 35% of the arc length of the circumference of the circumscribed circle.

[0011] Preferably, the narrow slot is arranged on the first wall, the guide portion is arranged separately from the first wall, and along the direction of airflow, the position where the guide portion is fixedly connected to the first wall is located upstream of the narrow slot.

[0012] Preferably, the body guide has an air guiding cavity, and the cross-sectional area of ​​the air guiding cavity decreases in a direction from the air inlet to the top cover.

[0013] Preferably, a slot is provided at the air outlet of the guide body, a sealing ring is installed in the slot, and the sealing ring seals the gap between the guide body and the inner wall of the main body.

[0014] Preferably, the narrow slot includes a first sub-slot and a second sub-slot located on both sides of the central axis of the main body, and the hairdressing accessory has a first position where the air outlet is connected to the first sub-slot to allow airflow to be discharged from the first sub-slot, and a second position where the air outlet is connected to the second sub-slot to allow airflow to be discharged from the second sub-slot; a second air outlet for receiving the airflow discharged from the air outlet is also provided on the first wall, and the second air outlet includes a first sub-slot for communicating with the first sub-slot, and a second sub-slot for communicating with the second sub-slot, and the guide portion is arranged opposite to the second air outlet.

[0015] Preferably, the main body is further provided with a first air outlet arranged along its length direction, and the hairdressing accessory also has a third position where the air outlet is connected to the first air outlet to allow air flow to be blown out from the first air outlet, and the first air outlet is located between the first sub-air outlet and the second sub-air outlet.

[0016] Preferably, a gear groove is provided on the main body, a retaining ring is provided on the retaining ring, a gear rib is provided on the retaining ring, the retaining ring extends into the gear groove, the gear groove has a plurality of gear grooves, the gear rib cooperates with the gear groove, a guide column is provided on the guide body, an annular guide rail is provided on the main body, the guide column extends into the guide rail, the top cover is snap-connected with the main body, a limiting rib is provided at the lower end of the top cover, and a limiting groove cooperating with the limiting rib is provided at the upper end of the main body.

[0017] This application has at least the following technical effects:

[0018] 1. Through the cooperation of the narrow slot and the negative pressure slope, the Venturi effect is generated through the narrow slot, and the airflow discharged from the narrow slot forms a negative pressure at the negative pressure slope. When the negative pressure slope is close to the hair, the hair will be adsorbed to the negative pressure slope under the action of the negative pressure, and the hairdressing attachment will be moved toward the hair ends. The hair will continue to be adsorbed under the action of the negative pressure, and the hair moves under the guidance of the negative pressure slope, which has a good straightening effect on the hair ends; further, the negative pressure slope moves from the narrow slot to the first vertical plane where the central axis of the main body is located, and along the direction of the airflow, the narrow slot is located upstream of the second vertical plane perpendicular to the first vertical plane, thereby ensuring the length of the negative pressure slope, increasing the negative pressure at the negative pressure slope, and improving the adsorption effect on the hair.

[0019] 2. By gradually reducing the cross-sectional area of ​​the narrow slot from the air inlet end to the air outlet end, the negative pressure at the negative pressure slope is increased, thereby improving the adsorption effect on the hair.

[0020] 3. By making the width of the narrow slot no greater than 6 mm, the negative pressure effect formed by the airflow discharged from the narrow slot at the negative pressure slope is strengthened, thereby improving the hair adsorption effect; if the width of the narrow slot is greater than 6 mm, the negative pressure at the negative pressure slope is small or even non-existent, and the adsorption effect on the hair is small or even non-existent, which will fail to prevent the hair ends from flying off.

[0021] 4. By making the guide part and the first wall have the same circumscribed circle, and the outer surface of the guide part is on the circumference of the circumscribed circle, the guide part is made into an arc surface, which guides the airflow blown out from the air outlet, reduces noise and air volume loss, and improves structural consistency.

[0022] 5. By arranging a plurality of comb teeth on the negative pressure inclined surface, it is helpful to comb long hair smoothly, reduce the resistance of combing hair, and thus reduce the burden on the scalp; the upper edge of the comb teeth is on the circumference of the circumscribed circle, so that the tips of the comb teeth are relatively rounded and will not hurt the scalp due to being too sharp; by forming a channel for receiving the airflow from the narrow groove between adjacent comb teeth, the negative pressure surface is divided into a plurality of negative pressure areas, and the hair is adsorbed in different areas, so that the hair can be adsorbed while being combed, thereby improving the anti-flying effect.

[0023] 6. By making the arc length of the outer surface of the guide part account for 15% to 35% of the arc length of the circumference of the circumscribed circle, the length of the negative pressure surface is ensured, thereby improving the hair adsorption effect, and ensuring the guiding effect of the guide part on the airflow, reducing noise and air volume loss; when it is greater than 35%, the length of the negative pressure surface is reduced, affecting hair adsorption; when it is less than 15%, the guiding effect of the guide part on the airflow becomes worse, and the noise and air volume loss increase.

[0024] 7. By reducing the cross-sectional area of ​​the air guide cavity from the air inlet to the top cover, the air outlet can be evenly discharged.

[0025] 8. By setting the sealing ring, the gap between the guide body and the inner wall of the main body is sealed to reduce noise and reduce air volume loss.

[0026] 9. Through the setting of the guide surface, guide and remind the user how to use the hairdressing accessory to achieve the best hair adsorption effect and anti-flying effect.

[0027] 10. By setting the first sub-slot and the second sub-slot on both sides of the central axis of the main body, the hairdressing attachment can discharge air from two different directions, which is convenient for users to prevent hair on the left and right sides from flying and improving user experience; by setting the first sub-air outlet and the second sub-air outlet, in the first position or the second position, only one slot is used for air discharge, which is convenient for wind concentration; the guide part and the second air outlet are arranged opposite to each other, and the air is discharged from the second air outlet through the guide part and the narrow slot, which reduces noise and reduces air volume loss.

[0028] 11. By setting the first air outlet, the function of the hairdressing accessory is expanded, the user experience is improved, and the user's usage cost is reduced; by locating the first air outlet between the first sub-air outlet and the second sub-air outlet, the structural complexity of the hairdressing accessory is reduced, the distance between the first air outlet and the first sub-air outlet and the second sub-air outlet is shortened, and the operational complexity of the user switching between different functions is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is an exploded view of the hairdressing attachment of the present application.

[0031] Figure 2 It is a schematic diagram of the structure of the top cover of the hairdressing accessory of the present application.

[0032] Figure 3 It is a schematic structural diagram of the body guide of the hairdressing accessory of the present application.

[0033] Figure 4 It is a structural schematic diagram of the guide part of the hairdressing accessory of the present application.

[0034] Figure 5 It is a structural schematic diagram of the first wall of the hairdressing accessory of the present application.

[0035] Figure 6 4 is a cross-sectional view of the first wall of the hairdressing accessory of the present application.

[0036] Figure 7 is a top view of a first wall of the hairdressing accessory of the present application.

[0037] Figure 8 It is a cross-sectional view of the hairdressing accessory of the present application in the third position.

[0038] Fig. 9 It is a cross-sectional view of the hairdressing accessory of the present application in the first position.

[0039] Fig.10 It is a cross-sectional view of the hairdressing accessory of the present application in the second position.

[0040] Fig.11 It is a cross-sectional view of the body guide of the hairdressing accessory of the present application.

[0041] Fig.12 It is a structural schematic diagram of the guide surface of the hairdressing accessory of the present application.

[0042] The meanings of the various marks in the figure are as follows: 1. Top cover; 11. Limiting rib; 12. Buckle; 2. First wall; 21. First air outlet; 211. First opening; 22. Second air outlet; 221. First sub-air outlet; 222. Second sub-air outlet; 23. Slot; 231. First sub-slot; 232. Second sub-slot; 24. Limiting slot; 25. Comb teeth; 26. Negative pressure slope; 27. Guide rail; 28. Shift slot; 281. Shift groove; 3. Air guide; 31. Second opening; 4. Sealing ring; 5. Guide body; 51. Air inlet; 511. Mounting end; 52. Air outlet; 53. Slot; 54. Guide column; 55. Clamp; 551. Shift rib; 56. Air guide cavity; 6. Guide surface. DETAILED DESCRIPTION

[0043] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0044] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0045] In addition, in the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. As for the positional relationships such as "upstream" and "downstream", they are based on the positional relationships when the fluid flows normally.

[0046] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0049] The following will be combined with the attached Figure 1-12 The present invention is described in detail.

[0050] In order to solve the problem of single hairdressing accessories with single shapes in the prior art, the present application provides a new hairdressing accessory, including a main body, a guide body 5 and a top cover 1, the main body is a hollow cylinder, the guide body 5 is arranged in the main body, the top cover 1 is arranged on the top of the main body, the guide body 5 has an air inlet 51 and an air outlet 52, and the main body is provided with a narrow groove 23 extending along its length direction.

[0051] Further, the main body includes a guide portion 3 and a first wall 2 connected to the guide portion 3, the air outlet 52 is arranged opposite to the guide portion 3, and the airflow discharged from the air outlet 52 is guided to the slot 23 through the guide portion 3. The first wall 2 includes a negative pressure slope 26 approaching from the slot 23 to the first vertical plane where the central axis of the main body is located, the slot 23 is located above the negative pressure slope 26, along the direction of airflow, the negative pressure slope 26 is located downstream of the slot 23, and the slot 23 is located upstream of a second vertical plane perpendicular to the first vertical plane.

[0052] The guide body 5 is a hollow cylindrical structure with a closed top. The air outlet 52 of the guide body 5 is located on the side wall and extends along its length. The air flow flows into the guide body 5 from the air inlet 51, flows along the length of the guide body 5, and flows out from the air outlet 52 of the guide body 5.

[0053] The narrow slot 23 includes an air inlet end and an air outlet end. In order to increase the negative pressure at the negative pressure slope 26 and improve the hair adsorption effect, the cross-sectional area of ​​the narrow slot 23 gradually decreases from the air inlet end to the air outlet end. In order to strengthen the negative pressure effect formed by the airflow discharged from the narrow slot 23 at the negative pressure slope 26, so that the discharged airflow has a higher flow rate and improves the hair adsorption effect, the width of the air outlet end of the narrow slot 23 is not greater than 6 mm, that is, less than or equal to 6 mm, preferably equal to 3.8 mm.

[0054] In order to reduce noise and air volume loss, and improve structural consistency, the air guide 3 and the first wall 2 have the same circumscribed circle, and the outer surface of the air guide 3 is on the circumference of the aforementioned circumscribed circle. Further, the negative pressure slope 26 is provided with a plurality of comb teeth 25 spaced apart along its length direction, and a channel for receiving the airflow from the narrow slot 23 is formed between adjacent comb teeth 25, and the upper edge of the comb teeth 25 is on the circumference of the circumscribed circle. More specifically, the arc length of the outer surface of the air guide 3 accounts for 15% to 35% of the arc length of the circumscribed circle, preferably 1 / 3.

[0055] The narrow slot 23 is provided on the first wall 2, and the air guide 3 is provided separately from the first wall 2. Along the direction of airflow, the position where the air guide 3 is fixedly connected to the first wall 2 is located upstream of the narrow slot 23. More specifically, the first wall 2 is provided with a positioning groove along its length direction, and the air guide 3 is provided with a positioning rib that cooperates with the positioning groove. The first wall 2 and the air guide 3 are quickly assembled through the cooperation of the positioning rib and the positioning groove, and then the first wall 2 and the air guide 3 are fixed by screws. It can be understood that the setting positions of the positioning rib and the positioning groove can be interchangeable.

[0056] In order to improve the uniformity of air discharge from the air outlet 52 along its length, the body guide 5 has an air guide cavity 56, and the cross-sectional area of ​​the air guide cavity 56 decreases from the air inlet 51 to the top cover 1. The reduction method may be gradually reduced along the length direction of the main body, or may include at least one gradually reduced section.

[0057] In order to prevent airflow from overflowing and being lost, a clamping groove 53 is provided at the air outlet 52 of the guide body 5, and a sealing ring 4 is installed in the clamping groove 53, and the gap between the outer wall of the guide body 5 and the inner wall of the main body is sealed by the sealing ring 4. More specifically, a circle of clamping grooves 53 are provided on the outer periphery of the air outlet 52, and the sealing ring 4 is annular and is arranged in the clamping grooves 53; the clamping grooves 53 are formed by ribs protruding from the outer surface of the guide body 5.

[0058] Furthermore, in order to remind the user how to use the hairdressing accessory to achieve the best anti-flying effect, a guide surface 6 is provided on the main body, and the guide surface 6 is located above the narrow slot 23 and upstream of the negative pressure slope 26 along the direction of airflow. In this example, the guide surface 6 is provided on the first wall 2. In order to make it easier for the user to observe the guide surface 6, an obvious prompt feature can be provided on the guide surface 6, such as providing an edge line on the guide surface 6, and providing the guide surface 6 as a surface with a different curvature or slope from the adjacent surface.

[0059] In order to achieve consistent styling of the hair on the left and right sides, the slot 23 includes a first sub-slot 231 and a second sub-slot 232 located on both sides of the central axis of the main body, and the hairdressing accessory has a first position where the air outlet 52 is connected to the first sub-slot 231 to allow air to be discharged from the first sub-slot 231, and a second position where the air outlet 52 is connected to the second sub-slot 232 to allow air to be discharged from the second sub-slot 232; a second air outlet 22 for receiving air discharged from the air outlet 52 is also provided on the first wall 2, and the second air outlet 22 includes a first sub-slot 221 for communicating with the first sub-slot 231, and a second sub-slot 222 for communicating with the second sub-slot 232, and the guide portion 3 is arranged opposite to the second air outlet 22.

[0060] Furthermore, the main body is provided with a first air outlet 21 extending along its length direction, and the hairdressing attachment also has an air outlet 52 connected to the first air outlet 21 so that the air flow is blown out of the first air outlet 21 at a third position, and the first air outlet 21 is located between the first sub-air outlet 221 and the second sub-air outlet 222. In this example, the air guide 3 is separately provided with the first wall 2, and the first air outlet 21 includes a first opening 211 provided on the first wall 2 and a second opening 31 provided on the air guide 3, and the first opening 211 and the second opening 31 are provided correspondingly. It can be understood that the air guide 3 is separately provided with the first wall 2, and the first air outlet 21 is provided on the air guide 3.

[0061] In order to enhance the user's experience of function switching and avoid the change of the airflow path due to the accidental rotation of the main body or the body guide 5 during the shaping process, a gear slot 28 is provided on the main body, and the body guide 5 is provided with a snap ring 55. The snap ring 55 is provided with a gear rib 551, and the snap ring 55 extends into the gear slot 28. The gear slot 28 has a plurality of gear grooves 281, and the gear rib 551 cooperates with the gear grooves 281. In the process of rotating the main body or the body guide 5, there is a "click" feeling when friction occurs between the gear rib 551 and the gear groove 281, prompting the user to switch the gear function, thereby enhancing the user's experience. At the same time, this cooperation method can enhance the friction of position switching and prevent misoperation.

[0062] In order to realize the smooth rotation of the main body and improve the user experience of the function switching process, a guide column 54 is provided on the body 5, and an annular guide rail 27 is provided on the main body. The guide column 54 extends into the guide rail 27. During the rotation of the top cover 1, the main body rotates, and the guide column 54 limits the main body through the guide rail 27. The guide rail 27 is an annular through hole opened on the main body, and there are two annular through holes, which are arranged around the gear slot 28. There are two guide columns 54, and each guide column 54 extends into one of the annular through holes.

[0063] In this example, the top cover 1 is fixedly connected to the main body, preferably the top cover 1 is connected to the main body by a buckle 12, a limiting rib 11 is provided at the lower end of the top cover 1, and a limiting groove 24 cooperating with the limiting rib 11 is provided at the upper end of the main body; the bottom end of the flow guide 5 is a mounting end 511, and the mounting end 511 is used to communicate with the air flow outlet of the hair dryer, and the air inlet 51 of the flow guide 5 is located at the mounting end 511, and the flow guide 5 is fixedly connected to the hair dryer through the mounting end 511, and the flow guide 5 is fixed and cannot rotate relative to the hair dryer. The user drives the main body to rotate relative to the flow guide 5 by rotating the top cover 1, thereby realizing the switching of the first position, the second position, and the third position.

[0064] It can be understood that the top cover 1 is fixedly connected to the flow guide 5, and a mounting end 511 for fixedly connecting to the hair dryer is provided at the bottom of the main body. The user drives the flow guide 5 to rotate by rotating the top cover 1, thereby realizing switching between the first position, the second position, and the third position.

[0065] It is understandable that a driving member may be provided at one end close to the air inlet 51 to drive the main body or the guide body 5 to rotate so as to switch between the first position, the second position and the third position.

[0066] When in the first position or the second position, the air outlet 52 of the guide body 5 is connected to the first sub-air outlet 221 or the second sub-air outlet 222 of the main body, and the airflow flows through the air inlet 51, the air outlet 52, the first sub-air outlet 221 or the second sub-air outlet 222 in sequence. The airflow is guided by the guide part 3 and discharged from the hairdressing attachment from the first sub-slot 231 or the second sub-slot 232, and a negative pressure is formed at the negative pressure slope 26 to adsorb the hair. The negative pressure slope 26 guides the airflow direction to straighten the hair and prevent the hair from flying due to excessive drying. When the main body is in the third position, the air outlet 52 of the guide body 5 is connected to the first exhaust port 21 of the main body, and the airflow received by the hairdressing attachment flows through the air inlet 51, the air outlet 52, and the first exhaust port 21 in sequence and then discharged. The first exhaust port 21 is a dry hair outlet, and the hairdressing attachment receives the hot airflow from the hair dryer and is discharged from the dry hair outlet to dry the hair. The functions of hairdressing accessories have been expanded to improve user convenience.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the present invention are covered by the scope of the claims of the present invention and will not be listed one by one here.

Claims

1. A hairdressing accessory, comprising a main body, a guide body and a top cover, wherein the main body is a hollow cylinder, the guide body is arranged in the main body, the top cover is arranged at the top of the main body, the guide body has an air inlet and an air outlet, and the main body is provided with a narrow groove extending along its length direction, characterized in that: The main body includes a guide portion and a first wall connected to the guide portion, the air outlet is arranged opposite to the guide portion, the air flow discharged from the air outlet is guided to the narrow slot through the guide portion, the first wall includes a negative pressure slope approaching from the narrow slot to a first vertical plane where the central axis of the main body is located, the narrow slot is located on one side of the first vertical plane, the narrow slot is located above the negative pressure slope, along the direction of air flow, the negative pressure slope is located downstream of the narrow slot, and the narrow slot is located upstream of a second vertical plane perpendicular to the first vertical plane.

2. A hairdressing accessory according to claim 1, characterized in that: The narrow slot comprises an air inlet end and an air outlet end, and a cross-sectional area of ​​the narrow slot gradually decreases from the air inlet end to the air outlet end.

3. A hairdressing accessory according to claim 2, characterized in that: The width of the air outlet end of the narrow slot is no more than 6 mm.

4. A hairdressing accessory according to claim 1, characterized in that: The guide portion and the first wall have the same circumscribed circle, and an outer surface of the guide portion is on the circumference of the circumscribed circle.

5. A hairdressing accessory according to claim 4, characterized in that: A plurality of comb teeth are arranged at intervals along the length direction of the negative pressure slope, and channels for receiving the airflow from the narrow slot are formed between adjacent comb teeth. The upper edges of the comb teeth are on the circumference of the circumscribed circle.

6. A hairdressing accessory according to claim 4, characterized in that: The arc length of the outer surface of the guide portion accounts for 15% to 35% of the arc length of the circumference of the circumscribed circle.

7. A hairdressing accessory according to claim 1, characterized in that: The narrow slot is arranged on the first wall, the air guide portion is arranged separately from the first wall, and along the direction of air flow, the position where the air guide portion is fixedly connected to the first wall is located upstream of the narrow slot.

8. A hairdressing accessory according to claim 1, characterized in that: The body guide has an air guiding cavity, and the cross-sectional area of ​​the air guiding cavity decreases from the air inlet to the top cover.

9. A hairdressing accessory according to claim 1, characterized in that: A card slot is arranged at the air outlet of the guide body, a sealing ring is installed in the card slot, and the sealing ring seals the gap between the guide body and the inner wall of the main body.

10. A hairdressing accessory according to claim 1, characterized in that: The main body also includes a guide surface, which is located above the narrow slot and upstream of the negative pressure slope along the direction of air flow.

11. A hairdressing accessory according to any one of claims 1 to 10, characterized in that: The narrow slot includes a first sub-slot and a second sub-slot located on both sides of the central axis of the main body, and the hairdressing accessory has a first position where the air outlet is connected to the first sub-slot to allow airflow to be discharged from the first sub-slot, and a second position where the air outlet is connected to the second sub-slot to allow airflow to be discharged from the second sub-slot; the first wall is also provided with a second air outlet for receiving the airflow discharged from the air outlet, and the second air outlet includes a first sub-slot for communicating with the first sub-slot, and a second sub-slot for communicating with the second sub-slot, and the guide portion is arranged opposite to the second air outlet.

12. A hairdressing accessory according to claim 11, characterized in that: The main body is also provided with a first air outlet extending along its length direction, and the hairdressing accessory also has a third position where the air outlet is connected to the first air outlet to allow air flow to be blown out from the first air outlet, and the first air outlet is located between the first sub-air outlet and the second sub-air outlet.

13. A hairdressing accessory according to any one of claims 1 to 10, characterized in that: The main body is provided with a gear groove, the guide body is provided with a snap ring, the snap ring is provided with a gear rib, the snap ring extends into the gear groove, the gear groove has a plurality of gear grooves, the gear rib cooperates with the gear groove, the guide body is provided with a guide column, the main body is provided with an annular guide rail, the guide column extends into the guide rail, the top cover is snap-connected with the main body, the lower end of the top cover is provided with a limiting rib, and the upper end of the main body is provided with a limiting groove that cooperates with the limiting rib.

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