Combined air duct structure of electric hair drier

Abstract

The utility model discloses a combined air duct structure of an electric hair drier, which comprises an outer air duct and an inner air duct, the outer air duct is fixedly connected with the inner air duct, the outer air duct comprises a cylindrical main body and a splicing sleeve, one side of the cylindrical main body is a small-diameter part, the other side of the cylindrical main body is provided with a large-diameter part protruding outwards, the annular surface of one end of the cylindrical main body is a small-diameter part, and the annular surface of the other end of the cylindrical main body is a small-diameter part. The splicing sleeve comprises an annular sleeve and an extension part which partially laterally extends from the annular sleeve and is matched with the small-diameter part, an embedding groove is formed in the side, connected with the splicing sleeve, of the large-diameter part, a protruding strip embedded into the embedding groove is arranged on the side, connected with the large-diameter part, of the splicing sleeve, and the inner wall of the extension part is connected with the small-diameter part in a buckled mode through a buckle. According to the combined air duct structure of the electric hair drier, the outer air duct can be formed by combining more materials, the veneers made of different materials can present rich visual effects, the veneers made of the materials and the outer air duct form a whole and cannot be separated, and the sealing performance of the outer air duct can be effectively guaranteed in the assembling mode that the protruding strips are embedded into the embedding grooves.

Description

Technical Field

[0001] The utility model belongs to the technical field of hair dryers, in particular to a combined air cylinder structure of a hair dryer. Background Art

[0002] A hair dryer is a device that uses a motor to drive the fan blades to rotate and thus make the air flow. It generally includes a hair dryer and a handle. The hair dryer is equipped with a heating wire and a fan. The fan drives the air to flow through the heating wire to blow out hot air to dry the hair faster. It is a commonly used household appliance.

[0003] A hair dryer generally includes an inner wind tube for accommodating a fan and a heating wire, and an outer wind tube suitable for decoration located outside the inner wind tube, wherein the inner wind tube is fixed on the inner side of the outer wind tube. The outer wind tube of existing hair dryers is generally an integral whole, which results in the appearance of hair dryers being all the same. As people's requirements for the aesthetics of hair dryers are gradually improved, the existing integral outer wind tube is difficult to meet people's aesthetic design requirements. In the prior art, the aesthetic requirements can only be met by pasting or coating the outer wall of the wind tube. However, after long-term use, the decorative materials are easy to fall off regardless of the pasting or coating method. Summary of the invention

[0004] In view of the deficiencies in the prior art, the utility model provides a combined air duct structure for an electric hair dryer. The combined air duct structure of the electric hair dryer enables the outer air duct to be composed of more materials, and the finishes of different materials can present rich visual effects. The finishes made of the material itself form an integral whole with the outer air duct and will not separate, and the combined air duct structure ensures the sealing of the outer air duct.

[0005] In order to solve the above technical problems, the utility model solves the problems through the following technical solutions: a combined air cylinder structure of a hair dryer, comprising an outer air cylinder and an inner air cylinder, the outer air cylinder being fixedly connected to the inner air cylinder, the outer air cylinder comprising a cylindrical main body and a splicing sleeve, one side of the cylindrical main body being a small diameter portion, the other side of the cylindrical main body being provided with a large diameter portion protruding outward, the annular surface at one end of the cylindrical main body being the small diameter portion, the splicing sleeve comprising an annular sleeve and an extension portion extending laterally from a part of the annular sleeve and matching the small diameter portion, an engaging groove being provided on the side where the large diameter portion is connected to the splicing sleeve, a convex strip embedded in the engaging groove being provided on the side where the splicing sleeve is connected to the large diameter portion, and the inner wall of the extension portion is connected to the small diameter portion by a snap-fit ​​connection. The combined air duct structure of this hair dryer can be assembled into an outer air duct by splicing a cylindrical main body and a splicing sleeve. The cylindrical main body and the splicing sleeve can be made of different materials, so that the outer air duct can be composed of more materials. The finishes of different materials can present rich visual effects. The finishes made of the material itself form a whole with the outer air duct and will not separate. In addition, the assembly method of embedding the convex strip into the fitting groove can effectively ensure the sealing of the outer air duct.

[0006] In the above technical solution, preferably, the small diameter portion is provided with a plurality of buckle grooves, and the inner wall of the extension portion is provided with a plurality of buckle blocks corresponding to the buckle grooves. The buckle position of the cylindrical body and the splicing sleeve is set there so that the outer surface of the outer wind tube is flat and convenient for buckling.

[0007] In the above technical solution, preferably, one end of the buckle groove is connected to the end face of the large diameter part, the buckle groove is perpendicular to the end face of the large diameter part, and the end of the buckle groove away from the large diameter part is provided with a deformation groove parallel to the end face of the large diameter part, and the deformation groove and the buckle groove penetrate the small diameter part. With this structure, the deformation groove and the buckle groove are divided into deformable parts, which can be effectively deformed when the splicing sleeve is assembled on the cylindrical body, and the assembly is convenient.

[0008] In the above technical solution, preferably, the inner air duct includes a heating wire installation tube, a fan installation tube and a filter screen installation seat arranged in sequence, a retaining ring is arranged on the split sleeve inside the annular sleeve, the cylindrical body is connected to the filter screen installation seat by a buckle, and the front end of the retaining ring abuts against the heating wire installation tube. This structure is used to facilitate the positioning of the inner air duct and the outer air duct as a whole.

[0009] In the above technical solution, preferably, the heating wire installation tube is provided with an annular recessed portion near the air outlet end, a sealing ring is sleeved on the annular recessed portion, an annular limiting portion is extended outward from the side of the sealing ring, and the annular limiting portion abuts against the baffle ring. This structure is adopted to improve the sealing performance between the inner air cylinder and the outer air cylinder.

[0010] In the above technical solution, preferably, the heating wire mounting tube and the fan mounting tube are connected by snap-fitting.

[0011] In the above technical solution, preferably, the inner wall of the outer wind tube is provided with a limiting concave portion arranged along the axial direction, and the outer wall of the inner wind tube is provided with a limiting convex portion matching the limiting concave portion. This structure is used to align the inner wind tube with the outer wind tube for installation to prevent the angle of the inner wind tube and the outer wind tube from deflecting.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the combined air duct structure of the hair dryer can be assembled into an outer air duct by splicing the cylindrical main body and the splicing sleeve together, the cylindrical main body and the splicing sleeve can be made of different materials, so that the outer air duct can be composed of more materials, and the finishes of different materials can present rich visual effects. The finishes made of the material itself form a whole with the outer air duct and will not be separated, and the assembly method of the convex strip embedded in the fitting groove can effectively ensure the sealing of the outer air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0014] Figure 2 It is a schematic diagram of the exploded structure of an embodiment of the utility model.

[0015] Figure 3 It is a structural schematic diagram of the split sleeve in the embodiment of the utility model.

[0016] Figure 4 It is a schematic structural diagram of the cylindrical main body in the embodiment of the utility model.

[0017] Figure 5 It is a schematic structural diagram of the cylindrical body in another direction in an embodiment of the utility model.

[0018] Figure 6 It is a schematic diagram of the structure of the inner air duct in the embodiment of the utility model. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Figures 1 to 6 A combined air cylinder structure of a hair dryer comprises an outer air cylinder 1 and an inner air cylinder 2, the outer air cylinder 1 is fixedly connected to the inner air cylinder 2, the outer air cylinder 1 comprises a cylindrical body 11 and a splicing sleeve 12, one side of the cylindrical body 11 is a small diameter portion 111, and the other side of the cylindrical body 11 is provided with a large diameter portion 112 protruding outward, the annular surface at one end of the cylindrical body 11 is the small diameter portion 111, the splicing sleeve 12 comprises an annular sleeve 121 and an extension portion 122 which partially extends laterally from the annular sleeve 121 and matches the small diameter portion 111, an engaging groove 113 is provided on the side where the large diameter portion 112 and the splicing sleeve 12 are connected, a convex strip 123 embedded in the engaging groove 113 is provided on the side where the splicing sleeve 12 and the large diameter portion 112 are connected, and the inner wall of the extension portion 122 is connected to the small diameter portion 111 by snap buckling. The combined air duct structure of this hair dryer can be assembled into an outer air duct 1 by splicing a cylindrical main body 11 and a splicing sleeve 12. The cylindrical main body 11 and the splicing sleeve 12 can be made of different materials, so that the outer air duct 1 can be composed of more materials. The finishes of different materials can present rich visual effects. The annular sleeve 121 is directly sleeved on the outside of the small diameter portion 111 of the cylindrical main body 11. The finish made of the material itself forms a whole with the outer air duct 1 and will not separate. In addition, the assembly method of the convex strip 123 embedded in the fitting groove 113 can effectively ensure the sealing of the outer air duct 1.

[0020] In this embodiment, the outer walls of the cylindrical body 11 and the split sleeve 12 form a cylindrical shape after being spliced.

[0021] In this embodiment, see Figures 3 to 5The two sides of the small diameter part 111 are respectively provided with three buckle grooves 114, and the inner wall of the extension part 122 is provided with buckle blocks 124 corresponding to the buckle grooves 114. The buckle position of the cylindrical body 11 and the splicing sleeve 12 is set at this position so that the outer surface of the outer wind tube 1 is flat and convenient for buckling.

[0022] In this embodiment, one end of the buckle groove 114 is connected to the end face of the large diameter portion 112, the direction of the buckle groove 114 is perpendicular to the end face of the large diameter portion 112, and the end of the buckle groove 114 away from the large diameter portion 112 is provided with a deformation groove 115 parallel to the end face of the large diameter portion 112, and the deformation groove 115 and the buckle groove 114 penetrate the small diameter portion 111. With this structure, the deformation groove 115 and the buckle groove 114 are divided into a deformable part, which can be effectively deformed when the splicing sleeve 12 is assembled to the cylindrical body 11, and the assembly is convenient.

[0023] In this embodiment, the inner air duct 2 includes a heating wire installation tube 21, a fan installation tube 22 and a filter screen installation seat 23 which are arranged in sequence, a retaining ring 125 is arranged in the annular sleeve 121 on the spliced ​​sleeve 12, the cylindrical body 11 is connected to the filter screen installation seat 23 by a buckle, and the front end of the retaining ring 125 abuts against the heating wire installation tube 21. This structure is used to facilitate the positioning between the inner air duct 2 and the outer air duct 1 as a whole.

[0024] In this embodiment, the heating wire installation tube 21 is provided with an annular recessed portion 211 near the air outlet end, a sealing ring 3 is sleeved on the annular recessed portion 211, and an annular limiting portion 31 is extended outward from the side of the sealing ring 3, and the annular limiting portion 31 is against the baffle ring 125. This structure is adopted to improve the sealing between the inner air tube 2 and the outer air tube 1.

[0025] In this embodiment, the heating wire mounting tube 21 and the fan mounting tube 22 are connected by snap-fitting.

[0026] In this embodiment, the inner wall of the outer air duct 1 is provided with a limiting concave portion 13 arranged along the axial direction, and the outer wall of the inner air duct 2 is provided with a limiting convex portion 212 matching the limiting concave portion 13. This structure is used to align the inner air duct 2 with the outer air duct 1 to prevent the inner air duct 2 and the outer air duct 1 from deflecting in angle.

[0027] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A combined wind tube structure of a hair dryer, comprising an outer wind tube (1) and an inner wind tube (2), wherein the outer wind tube (1) is fixedly connected to the inner wind tube (2), and characterized in that: The outer air cylinder (1) comprises a cylindrical body (11) and a split sleeve (12); one side of the cylindrical body (11) is a small-diameter portion (111); the other side of the cylindrical body (11) is provided with a large-diameter portion (112) protruding outward; the annular surface at one end of the cylindrical body (11) is the small-diameter portion (111); the split sleeve (12) comprises an annular sleeve (121) and an extension portion (122) extending laterally from the annular sleeve (121) and matching the small-diameter portion (111); a fitting groove (113) is provided on the side where the large-diameter portion (112) and the split sleeve (12) are connected; a convex strip (123) embedded in the fitting groove (113) is provided on the side where the split sleeve (12) and the large-diameter portion (112) are connected; and an inner wall of the extension portion (122) and the small-diameter portion (111) are connected by snap fastening.

2. A combined hair dryer structure as claimed in claim 1, characterized in that: A plurality of buckle grooves (114) are provided on the small diameter portion (111), and a plurality of buckle blocks (124) corresponding one to one with the buckle grooves (114) are provided on the inner wall of the extension portion (122).

3. A combined hair dryer structure as claimed in claim 2, characterized in that: One end of the buckle groove (114) is connected to the end face of the large diameter portion (112); the direction of the buckle groove (114) is perpendicular to the end face of the large diameter portion (112); one end of the buckle groove (114) away from the large diameter portion (112) is provided with a deformation groove (115) parallel to the end face of the large diameter portion (112); the deformation groove (115) and the buckle groove (114) penetrate the small diameter portion (111).

4. A combined hair dryer structure as claimed in claim 1, characterized in that: The inner wind cylinder (2) comprises a heating wire installation cylinder (21), a fan installation cylinder (22) and a filter screen installation seat (23) which are arranged in sequence; a retaining ring (125) is arranged on the spliced ​​sleeve (12) inside the annular sleeve (121); the cylindrical body (11) and the filter screen installation seat (23) are connected via a snap-fit, and the front end of the retaining ring (125) abuts against the heating wire installation cylinder (21).

5. A combined hair dryer structure as claimed in claim 4, characterized in that: The heating wire installation tube (21) is provided with an annular recessed portion (211) near the air outlet end, a sealing ring (3) is sleeved on the annular recessed portion (211), an annular limiting portion (31) is extended outwardly from the side of the sealing ring (3), and the annular limiting portion (31) abuts against the retaining ring (125).

6. A combined hair dryer structure as claimed in claim 4, characterized in that: The heating wire mounting cylinder (21) and the fan mounting cylinder (22) are connected via a snap-fit ​​connection.

7. The combined hair dryer structure of claim 1, characterized in that: The inner wall of the outer air cylinder (1) is provided with a position limiting recessed portion (13) arranged along the axial direction, and the outer wall of the inner air cylinder (2) is provided with a position limiting protruding portion (212) matching the position limiting recessed portion (13).

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