Bidirectional hair curling tuyere accessory

Abstract

The bidirectional hair curling tuyere accessory comprises an inner cylinder and a guide center piece, the inner cylinder is provided with an air channel and an air inlet, the side wall of the inner cylinder is provided with at least two air outlets, and the air outlets are arranged at intervals in the circumferential direction of the inner cylinder; the guiding center piece is arranged outside the inner barrel in a sleeving mode, the positions, corresponding to the air outlets, of the guiding center piece are each provided with a first flow channel and a second flow channel, each first flow channel and each second flow channel comprise a supporting face and a flow guiding face, and the flow guiding faces are used for guiding airflow to the supporting faces; the inner barrel can rotate relative to the guide center piece, and then the first flow channel or the second flow channel can communicate with the air outlet; by rotating the inner cylinder, the air outlet can be communicated with the first flow channel or the second flow channel, and the accessory can discharge air clockwise or anticlockwise, so that when a user needs to change directions to discharge air, the accessory does not need to be replaced, and only the inner cylinder needs to be rotated.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a two-way curling nozzle accessory. Background Art

[0002] The hair care device includes an attachment, hair is wrapped around the attachment, air can be exhausted from the attachment, and the hair wrapped around the attachment is heated and shaped; the existing attachment only exhausts air in one direction, and when the user needs to curl the hair in the reverse direction, the user can only replace the attachment, which is very troublesome to use. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a bidirectional curling nozzle attachment.

[0004] According to the first aspect of the present invention, the two-way curling nozzle accessory comprises an inner cylinder and a guide center piece, the inner cylinder having an air duct and an air inlet, the side wall of the inner cylinder having at least two air outlets, and the air outlets are arranged at intervals along the circumferential direction of the inner cylinder; the guide center piece is sleeved outside the inner cylinder, and the guide center piece has a first flow channel for guiding the airflow to discharge in a clockwise direction and a second flow channel for guiding the airflow to discharge in a counterclockwise direction corresponding to the position of each air outlet, the first flow channel and the second flow channel both include a supporting surface and a guide surface located outside the supporting surface, and the guide surface is used to guide the airflow to the supporting surface; wherein, the inner cylinder can rotate relative to the guide center piece, so that the first flow channel or the second flow channel can be connected to the air outlet.

[0005] The two-way curling nozzle attachment according to the embodiment of the utility model has at least the following technical effects: by rotating the inner cylinder, the air outlet can be connected to the first flow channel or the second flow channel, so that the attachment can discharge air clockwise or counterclockwise, that is, the attachment can discharge air in two directions, so that when the user needs to change the direction of air discharge, there is no need to replace the attachment, and only needs to rotate the inner cylinder; the side wall of the inner cylinder has 2 to 4 air outlets, and the guide surface can guide the airflow to the supporting surface, so that even if the attachment has 2 air outlet ducts, 3 air outlet ducts or 4 air outlet ducts, the hair can be closely attached to the attachment to ensure the curling effect, and because the number of air outlet ducts is small, the structure of the attachment is simple and the manufacturing cost is low.

[0006] According to some embodiments of the utility model, the guide center piece includes at least two mounting parts and a guide part arranged between two adjacent mounting parts, at least two mounting parts are arranged at intervals along the circumferential direction of the guide center piece, and the first flow channel and the second flow channel are formed between the guide part and the two adjacent mounting parts.

[0007] According to some embodiments of the utility model, the middle part of the guide part is located between two adjacent mounting parts, both ends of the guide part are located outside the mounting parts, the outer side surface of the guide part is the supporting surface, and the inner side surfaces at both ends of the guide part are the guide surfaces.

[0008] According to some embodiments of the present invention, the support surface and the guide surface are both arc-shaped, and the ratio of the arc length L1 of the guide surface to the arc length L2 of the support surface is: L1 / L2≥0.3.

[0009] According to some embodiments of the present invention, an angle α is formed between the outer side surface of the end portion of the guide portion and the inner side surface of the end portion of the guide portion, and α≤60°.

[0010] According to some embodiments of the present invention, the guide surface includes a first guide section and a second guide section, and the angle between the tangent of each point of the first guide section and the circumferential direction of the guide center piece gradually increases along the guide gas direction of the guide surface, and the angle between the tangent of each point of the second guide section and the circumferential direction of the guide center piece gradually decreases along the guide gas direction of the guide surface.

[0011] According to some embodiments of the utility model, the side of the air outlet has a seal, which is used to seal the gap between the guide center piece and the inner tube, thereby ensuring that the gas from the air outlet is transported to the first flow channel or the second flow channel, and the seal is integrally formed with the inner tube.

[0012] According to some embodiments of the utility model, it also includes a rotating cap, which is rotatably mounted on the guide center piece, the rotating cap is connected to the inner cylinder, the top of the guide center piece has at least two positioning parts, the bottom of the rotating cap has a positioning piece that can be raised and lowered, and the rotating cap has an elastic piece for keeping the positioning piece in contact with the positioning piece, wherein the positioning piece can move between at least two positioning pieces by driving the rotating cap to rotate.

[0013] According to some embodiments of the present invention, the rotating cap has patterns for facilitating rotation.

[0014] According to some embodiments of the utility model, it also includes a nozzle fixing part, the bottom of the inner cylinder and the bottom of the guide center part are installed on the nozzle fixing part, the air inlet is located at the bottom of the inner cylinder, and the outer wall of the nozzle fixing part has a plurality of protrusions spaced apart along the circumferential direction of the nozzle fixing part.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 A cross-sectional view of a certain part of the bidirectional hair curling nozzle attachment of an embodiment of the utility model;

[0018] Figure 2 It is a cross-sectional view of the connection between the inner cylinder and the guide center piece;

[0019] Figure 3 An exploded view of the two-way curling nozzle attachment;

[0020] Figure 4 for Figure 2 The enlarged view of point A in the middle;

[0021] Figure 5 It is a structural schematic diagram of the inner tube;

[0022] Figure 6 It is a schematic diagram of the structure in which the rotating cap and the guide center piece are separated;

[0023] Figure 7 It is a schematic diagram of the structure of a two-way curling nozzle accessory.

[0024] Figure markings: inner cylinder 100, air duct 110, air inlet 120, air outlet 130, sealing member 140, guide center member 200, first flow channel 210, second flow channel 220, supporting surface 230, guide surface 240, first guide section 241, second guide section 242, mounting portion 250, guide portion 260, positioning portion 270, rotating cap 300, positioning member 310, texture 320, nozzle fixing member 400, protrusion 410. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] Reference Figure 1 , 2 As shown, the bidirectional curling nozzle attachment according to the embodiment of the utility model comprises an inner cylinder 100 and a guide center piece 200, the inner cylinder 100 has an air duct 110 and an air inlet 120, the side wall of the inner cylinder 100 has at least two air outlets 130, and the air outlets 130 are arranged at intervals along the circumferential direction of the inner cylinder 100; the guide center piece 200 is sleeved outside the inner cylinder 100, and the guide center piece 200 has a first flow channel 210 and a second flow channel 210 for guiding the airflow to discharge in a clockwise direction at the position corresponding to each air outlet 130. The second flow channel 220 is used to guide the airflow to discharge in a counterclockwise direction. The first flow channel 210 and the second flow channel 220 both include a support surface 230 and a guide surface 240 located outside the support surface 230. The guide surface 240 is used to guide the airflow to the support surface 230, so that the hair can be tightly attached to the outer wall of the guide center piece 200 under the action of the airflow; wherein the inner cylinder 100 can rotate relative to the guide center piece 200, so that the first flow channel 210 or the second flow channel 220 can be connected to the air outlet 130.

[0030] When working, the two-way curling nozzle attachment is installed on the nozzle of the hair dryer, and the hot air in the hair dryer enters the air duct 110 through the air inlet 120, and then is discharged outside the attachment through the first flow channel 210 and the air flow is discharged in a clockwise direction, or is discharged outside the attachment through the second flow channel 220 and the air flow is discharged in a counterclockwise direction. During the air outlet process, the guide surface 240 guides the air flow to the support surface 230 to form a Coanda effect, so that the hair automatically adheres to the outer wall of the guide center piece 200 to achieve an automatic curling effect; when the user needs to change the direction of air outlet, by rotating the inner cylinder 100, the air outlet 130 can be connected with the first flow channel 210 or the second flow channel 220 to achieve the switching of the air outlet direction. In summary, the utility model realizes the air outlet 130 by cooperating with the rotatable inner cylinder 100 and the guide center piece 200. 0 can be connected with the first flow channel 210 or the second flow channel 220, so that the accessory can discharge air in two directions. When switching the air outlet direction, the user only needs to rotate the inner cylinder 100 without replacing the accessory; the side wall of the inner cylinder 100 has 2 to 4 air outlets 130, and the guide surface 240 can guide the airflow to the support surface 230, so that even if the accessory has 2 air outlet ducts, 3 air outlet ducts or 4 air outlet ducts, the hair can be closely attached to the accessory to ensure the curling effect, wherein the air outlet duct means that one air outlet 130 corresponds to one first flow channel 210 and one second flow channel 220, and because the number of air outlet ducts is small, the accessory does not need to be designed with more structures, so that the structure of the accessory is simple, and because the structure of the accessory is simple and the number of air outlet ducts is small, the mold structure for manufacturing the accessory is simple, thereby reducing the manufacturing cost; specifically, as Figure 3 As shown, the air outlet 130 can extend along the length direction of the inner tube 100, and a plurality of spacers arranged at intervals along the up and down directions are provided in the air outlet 130, thereby dividing the air outlet 130 into a plurality of notches along the up and down directions, and the first flow channel 210 and the second flow channel 220 are provided at the positions corresponding to the notches of the guide center piece 200.

[0031] In some embodiments of the present invention, Figure 2 As shown, the guide center piece 200 includes at least two mounting portions 250 and a guide portion 260 disposed between two adjacent mounting portions 250. The at least two mounting portions 250 are spaced apart along the circumferential direction of the guide center piece 200. A first flow channel 210 and a second flow channel 220 are formed between the guide portion 260 and the two adjacent mounting portions 250, so that the user can curl the hair in different directions. Specifically, there are four mounting portions 250 and four air outlets 130, and each air outlet 130 is located between two adjacent mounting portions 250.

[0032] In a further embodiment of the present invention, Figure 2As shown, the middle part of the guide portion 260 is located between two adjacent mounting portions 250, and both ends of the guide portion 260 are located outside the mounting portions 250. The outer side surface of the guide portion 260 is the supporting surface 230, and the inner side surfaces of both ends of the guide portion 260 are the guide surfaces 240. The guide surfaces 240 and the supporting surfaces 230 partially overlap in the radial direction of the guide center piece 200, so that the guide surface 240 can ensure that the airflow is guided to the supporting surface 230, so that the hair can be tightly attached to the supporting surface 230, thereby ensuring the automatic curling effect.

[0033] In a further embodiment of the present invention, Figure 2 As shown, the support surface 230 and the guide surface 240 are both arc-shaped, and the ratio of the arc length L1 of the guide surface 240 to the arc length L2 of the support surface 230 is: L1 / L2≥0.3, that is, the guide surface 240 occupies more than one-third of the support surface 230. The guide surface 240 adopts this proportional relationship to ensure that the Coanda effect can be achieved even if the attachment has 2 air outlet ducts, 3 air outlet ducts or 4 air outlet ducts, so that the hair automatically adheres to the support surface 230 to ensure the curling effect; it can be imagined that L2 is a fixed value. When L1 becomes larger and larger, the Coanda effect achieved is better, which can improve the curling effect.

[0034] In a further embodiment of the present invention, Figure 4 As shown, there is an angle α between the outer side surface of the end of the guide portion 260 and the inner side surface of the end of the guide portion 260, α≤60°, so as to ensure the effect of the Bernoulli effect. Figure 2 As shown, the cold air outside the guide part 260 can be mixed with the hot air inside the guide part 260 to cool and shape the heated hair under the action of the hot air inside the guide part 260. It can be imagined that the smaller α is, the better the Bernoulli effect is, which improves the curling effect.

[0035] In a further embodiment of the present invention, Figure 4 As shown, the guide surface 240 includes a first guide segment 241 and a second guide segment 242. The angle between the tangent of each point of the first guide segment 241 and the circumferential direction of the guide center piece 200 gradually increases along the guide gas direction of the guide surface 240 or the air outlet direction of the first flow channel 210. Figure 4As shown, for example, an angle β1 is formed between point B of the first guide section 241 and the circumferential direction of the guide center piece 200, and an angle β2 is formed between point C of the first guide section 241 and the circumferential direction of the guide center piece 200, β2>β1; the angle between the tangent of each point of the second guide section 242 and the circumferential direction of the guide center piece 200 gradually decreases along the guide gas direction of the guide surface 240, that is, the arc shape of the second guide section 242 and the arc shape of the first guide section 241 are designed oppositely; when working, the hot air is first guided to the first guide section 241 through the second guide section 242, and then guided to the support surface 230 through the first guide section 241, ensuring that the accessory can achieve the Coanda effect despite having 2 air outlet ducts, 3 air outlet ducts or 4 air outlet ducts 110, ensuring the curling effect, making the accessory simple in structure and low in manufacturing cost.

[0036] In some embodiments of the present invention, Figure 5 As shown, the side of the air outlet 130 is provided with a seal 140, and the seal 140 is used to seal the gap between the guide center piece 200 and the inner cylinder 100, thereby ensuring that the gas of the air outlet 130 is transported to the first flow channel 210 or the second flow channel 220. The seal 140 and the inner cylinder 100 are integrally formed, that is, the seal 140 and the inner cylinder 100 can be integrally formed by in-mold injection molding. The inner cylinder 100 can be a high-temperature resistant plastic, and the seal 140 can be a high-temperature soft glue (liquid silicone or fluorinated rubber), so that the inner cylinder 100 is a combination of soft and hard glue structure, which can provide selective rotation and achieve a better sealing effect. The better sealing effect can also maximize the Coanda effect, thereby achieving stronger adhesion and ultimately obtaining a more perfect curling effect; specifically, the seal 140 surrounds the air outlet 130.

[0037] In some embodiments of the present invention, Figure 3 , 6As shown, the rotating cap 300 is also included. The rotating cap 300 is rotatably mounted on the guide center piece 200. The rotating cap 300 passes through the guide center piece 200 and is connected to the inner cylinder 100. The top of the guide center piece 200 has at least two positioning parts 270. The bottom of the rotating cap 300 has a positioning member 310 that can be lifted up and down. The rotating cap 300 has an elastic member for keeping the positioning member 310 in contact with the positioning part 270. The positioning member 310 can move between at least two positioning parts 270 by driving the rotating cap 300 to rotate. Specifically, the positioning member 310 can be a steel ball, there are two positioning parts 270, the elastic part can be a spring, the positioning part 270 is a groove, part of one groove is connected with part of another groove, when the rotating cap 300 rotates, the rotating cap 300 can drive the inner cylinder 100 to rotate, so that the air outlet 130 is connected with the first flow channel 210 or the second flow channel 220, and the positioning part 310 switches between the two grooves. The positioning part 270 cooperates with the positioning part 310 to facilitate positioning the rotation position of the inner cylinder 100, so that the air outlet 130 is easily connected with the first flow channel 210 or the second flow channel 220.

[0038] In a further embodiment of the present invention, Figure 6 As shown, the rotating cap 300 has a texture 320 for facilitating rotation, and the texture is a concave-convex structure, which makes it easy for the user to rotate the rotating cap 300.

[0039] In some embodiments of the present invention, Figure 3 , 7 As shown, it also includes a nozzle fixing part 400. The bottom of the inner cylinder 100 and the bottom of the guide center part 200 are installed on the nozzle fixing part 400. The air inlet 120 is located at the bottom of the inner cylinder 100. The outer wall of the nozzle fixing part 400 has a plurality of protrusions 410 arranged at intervals along the circumferential direction of the nozzle fixing part 400. Since the nozzle fixing part 400 is connected to the nozzle of the hair dryer, the nozzle fixing part 400 is prone to high temperature. By providing the protrusions 410, the surface temperature can be effectively reduced, and it will not be hot when disassembling and installing.

[0040] In the description of this specification, the description with reference to the terms "some embodiments" or "it is conceivable that" etc. 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 utility model. 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 can be combined in any one or more embodiments or examples in a suitable manner.

[0041] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A two-way curling nozzle attachment, characterized in that: include: The inner cylinder has an air duct and an air inlet, and the side wall of the inner cylinder has at least two air outlets, and the air outlets are arranged at intervals along the circumferential direction of the inner cylinder; A guide center piece is sleeved outside the inner tube, and the guide center piece has a first flow channel for guiding the airflow to be discharged in a clockwise direction and a second flow channel for guiding the airflow to be discharged in a counterclockwise direction at a position corresponding to each of the air outlets, and the first flow channel and the second flow channel both include a support surface and a guide surface located outside the support surface, and the guide surface is used to guide the airflow to the support surface; Wherein, the inner cylinder can rotate relative to the guide center piece, so that the first flow channel or the second flow channel can be connected to the air outlet; It also includes a rotating cap, which is rotatably mounted on the guide center piece, the rotating cap is connected to the inner cylinder, the top of the guide center piece has at least two positioning parts, the bottom of the rotating cap has a positioning piece that can be raised and lowered, and the rotating cap has an elastic piece for keeping the positioning piece in contact with the positioning piece, wherein the positioning piece can move between at least two positioning pieces by driving the rotating cap to rotate.

2. The two-way curling nozzle attachment according to claim 1, characterized in that: The guide center piece includes at least two mounting parts and a guide part arranged between two adjacent mounting parts. At least two mounting parts are arranged at intervals along the circumferential direction of the guide center piece. The first flow channel and the second flow channel are formed between the guide part and the two adjacent mounting parts.

3. The two-way curling nozzle attachment according to claim 2, characterized in that: The middle part of the guide part is located between two adjacent mounting parts, both ends of the guide part are located outside the mounting parts, the outer side surface of the guide part is the supporting surface, and the inner side surfaces of the two ends of the guide part are the guide surfaces.

4. The two-way curling nozzle attachment according to claim 3, characterized in that: The supporting surface and the guide surface are both arc-shaped, and the ratio of the arc length L1 of the guide surface to the arc length L2 of the supporting surface is: L1 / L2≥0.

3.

5. The two-way curling nozzle attachment according to claim 3 or 4, characterized in that: An angle α is formed between the outer side surface of the end portion of the guide portion and the inner side surface of the end portion of the guide portion, and α≤60°.

6. The two-way curling nozzle attachment according to claim 3, characterized in that: The guide surface includes a first guide section and a second guide section. The angle between the tangent of each point of the first guide section and the circumferential direction of the guide center piece gradually increases along the direction of the guide gas of the guide surface, and the angle between the tangent of each point of the second guide section and the circumferential direction of the guide center piece gradually decreases along the direction of the guide gas of the guide surface.

7. The two-way curling nozzle attachment according to claim 1, characterized in that: The side of the air outlet is provided with a seal, and the seal is used to seal the gap between the guide center piece and the inner tube, thereby ensuring that the gas from the air outlet is transported to the first flow channel or the second flow channel. The seal is integrally formed with the inner tube.

8. The two-way curling nozzle attachment according to claim 1, characterized in that: The rotating cap has patterns for facilitating rotation.

9. The two-way curling nozzle attachment according to claim 1, characterized in that: It also includes a nozzle fixing part, the bottom of the inner cylinder and the bottom of the guide center part are installed on the nozzle fixing part, the air inlet is located at the bottom of the inner cylinder, and the outer wall of the nozzle fixing part has a plurality of protrusions arranged at intervals along the circumferential direction of the nozzle fixing part.

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