Inner air duct structure of electric hair drier

Abstract

The utility model discloses an inner air duct structure of an electric hair drier, which comprises an inner air duct main body, the inner air duct main body comprises a first semicircular cylinder and a second semicircular cylinder, and the first semicircular cylinder and the second semicircular cylinder are buckled on the outer side of an interface through a buckle to form the inner air duct main body. An electric heating wire support, a fan mounting barrel and a filter screen support are sequentially arranged in the inner air duct body, the electric heating wire support is arranged in a heat insulation barrel, a first limiting ring is arranged on the outer wall of the heat insulation barrel, the fan mounting barrel is connected with the filter screen support through a buckle, and a second limiting ring is arranged on the periphery of the filter screen support. A first annular groove and a second annular groove are formed in the inner wall of the inner air duct body, the first limiting ring is inserted into the first annular groove, and the second limiting ring is inserted into the second annular groove. The inner air duct structure of the electric hair drier can be assembled without turning screws, so that the assembly efficiency is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hair dryers, in particular to an inner wind tube structure of a hair dryer. Background Art

[0002] The hair dryer is a commonly used small household appliance for drying hair or styling hair. The hair dryer generally includes a hair dryer and a handle. In order to meet the pursuit of the appearance of the hair dryer by most users, more and more hair dryers are now processed by assembling an inner hair dryer and an outer hair dryer. The inner hair dryer is provided with a heating wire, a fan and an air inlet filter. The heating wire is wound on the heating wire bracket, the fan is fixed in the fan mounting cylinder, and the air inlet filter is arranged on the filter bracket. In the prior art, the heating wire bracket, the fan mounting cylinder and the filter bracket are generally fixed to the positioning portion extending from the inner wall of the inner hair dryer by screws, or a limiting ring is provided at one end of the inner hair dryer, and a supporting ring fixed to the end of the inner hair dryer by screws is provided at the other end. The heating wire bracket, the fan mounting cylinder and the filter bracket are installed in contact between the limiting ring and the supporting ring. Regardless of the structure, the installation of the heating wire bracket, the fan mounting cylinder and the filter bracket in the inner hair dryer is relatively troublesome, and multiple screws need to be screwed, resulting in reduced assembly efficiency of the inner hair dryer. Summary of the invention

[0003] The utility model aims at the deficiencies of the prior art and provides an inner wind tube structure for a hair dryer, wherein no screws need to be tightened when assembling a heating wire bracket, a fan mounting tube and a filter bracket in the inner wind tube, thereby effectively improving the assembly efficiency.

[0004] In order to solve the above technical problems, the utility model solves the problems through the following technical solutions: an inner cylinder structure of a hair dryer, comprising an inner cylinder body, the inner cylinder body comprising a first semi-cylinder and a second semi-cylinder, the first semi-cylinder and the second semi-cylinder are buckled together at the outer side of the interface to form the inner cylinder body, a heating wire bracket, a fan mounting cylinder and a filter bracket are sequentially arranged in the inner cylinder body, the heating wire bracket is arranged in a heat-insulating cylinder, a first limiting ring is arranged on the outer wall of the heat-insulating cylinder, the fan mounting cylinder is connected to the filter bracket by a buckle, a second limiting ring is arranged on the outer periphery of the filter bracket, a first annular groove and a second annular groove are arranged on the inner wall of the inner cylinder body, the first limiting ring is inserted into the first annular groove, and the second limiting ring is inserted into the second annular groove. When assembling the inner air cylinder structure of the hair dryer, the heating wire bracket is installed in the insulation cylinder, and then the first limiting ring on the insulation cylinder is aligned with the first annular groove in the first semi-cylinder and inserted into it, and the second limiting ring on the filter bracket is aligned with the second annular groove in the first semi-cylinder and inserted into it, and then the second semi-cylinder is assembled to the first semi-cylinder to form a complete inner air cylinder body. The assembly of the heating wire bracket, the fan mounting cylinder and the filter bracket in the inner air cylinder is completed, and no screws need to be tightened during assembly, thereby effectively improving the assembly efficiency.

[0005] In the above technical solution, preferably, a plurality of first protrusions are arranged in the first annular groove, a plurality of first notches are arranged on the first limiting ring, and the first protrusions are inserted into the first notches. With this structure, the heat insulation cylinder will not rotate in the inner wind cylinder body, making the positioning more reliable.

[0006] In the above technical solution, preferably, a plurality of second protrusions are arranged in the second annular groove, a plurality of second notches are arranged on the second limiting ring, and the second protrusions are inserted into the second notches. With this structure, the fan mounting cylinder and the filter bracket will not rotate in the inner cylinder body, making the positioning more reliable.

[0007] In the above technical solution, preferably, a circuit board is sleeved on the outer periphery of the fan installation cylinder, and the outer periphery of the circuit board matches the shape of the inner wall of the inner cylinder body. This structure facilitates assembly and positioning of the circuit board.

[0008] In the above technical solution, preferably, the second limiting ring is provided with a plurality of air flow holes. With this structure, when the fan is running, air can flow into the air flow holes to cool the circuit board.

[0009] In the above technical solution, preferably, the second limiting ring is provided with a display screen bracket near the air inlet, the end of the filter bracket is sleeved with a cylinder with a filter at the end, and the display screen bracket is provided with a plurality of abutting parts facing the second limiting ring side, and the plurality of abutting parts are arranged around the outer periphery of the cylinder and abut against the end of the cylinder, and a flow gap is provided between the cylinder and the display screen bracket. This structure is adopted to facilitate the installation and positioning of the filter.

[0010] In the above technical solution, preferably, the inner air cylinder body is fixed with a buckle by a buckle near the air outlet, and a magnetic ring limiting ring is provided at one end of the buckle near the air outlet, and a magnetic ring is sandwiched between the magnetic ring limiting ring and the inner air cylinder body. The buckle makes the splicing of the first semi-cylinder and the second semi-cylinder more secure, and facilitates the installation and fixation of the magnetic ring.

[0011] Compared with the prior art, the utility model has the following beneficial effects: when assembling the inner air cylinder structure of the hair dryer, the heating wire bracket is installed in the heat-insulating cylinder, and then the first limiting ring on the heat-insulating cylinder is aligned with the first annular groove in the first semi-cylinder and inserted, the second limiting ring on the filter bracket is aligned with the second annular groove in the first semi-cylinder and inserted, and then the second semi-cylinder is spliced ​​onto the first semi-cylinder to form a complete inner air cylinder body, thereby completing the assembly of the heating wire bracket in the inner air cylinder, the fan mounting cylinder and the filter bracket, and no screws need to be tightened during assembly, thereby effectively improving the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the exploded structure of an embodiment of the utility model.

[0013] Figure 2 The utility model is a schematic cross-sectional structure diagram of an embodiment of the utility model in which a hair dryer is installed.

[0014] Figure 3 It is a schematic structural diagram of the first semi-cylinder in an embodiment of the utility model.

[0015] Figure 4 It is a schematic structural diagram of the second semi-cylinder in the embodiment of the utility model. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Figures 1 to 4 A hair dryer inner cylinder structure comprises an inner cylinder body 1, wherein the inner cylinder body 1 comprises a first semi-cylinder 11 and a second semi-cylinder 12, wherein the first semi-cylinder 11 and the second semi-cylinder 12 are buckled together on the outer side of a dividing interface to form the inner cylinder body 1, and specifically, three elastic buckling blocks extending toward the second semi-cylinder 12 are arranged on both sides of the first semi-cylinder 11 close to the dividing interface, and buckling grooves corresponding to the elastic buckling blocks are arranged on the outer walls of both sides of the second semi-cylinder 12 close to the dividing interface, and the inner cylinder is formed after the elastic buckling blocks are buckled into the buckling grooves one by one. The main body 1, the inner air duct main body 1 is sequentially provided with a heating wire bracket 2, a fan mounting cylinder 3 and a filter bracket 4, the heating wire bracket 2 is arranged in the insulation cylinder 5, the outer wall of the insulation cylinder 5 is provided with a first limiting ring 51, a fan is fixed in the fan mounting cylinder 3, the fan mounting cylinder 3 and the filter bracket 4 are connected by a snap buckle, the outer periphery of the filter bracket 4 is provided with a second limiting ring 41, the inner wall of the inner air duct main body 1 is provided with a first annular groove 13 and a second annular groove 14, the first limiting ring 51 is inserted into the first annular groove 13, and the second limiting ring 41 is inserted into the second annular groove 14. When assembling the inner air cylinder structure of the hair dryer, the heating wire bracket 2 is installed into the insulating cylinder 5, and then the first limiting ring 51 on the insulating cylinder 5 is aligned with the first annular groove 13 in the first semi-cylinder 11 and inserted therein, and the second limiting ring 41 on the filter bracket 4 is aligned with the second annular groove 14 in the first semi-cylinder 11 and inserted therein, and then the second semi-cylinder 12 is assembled to the first semi-cylinder 11 to form a complete inner air cylinder body 1, thereby completing the assembly of the heating wire bracket 2, the fan mounting cylinder 3 and the filter bracket 4 in the inner air cylinder. No screws need to be tightened during the assembly, thereby effectively improving the assembly efficiency.

[0017] The heating wire bracket 2 is a plurality of support plates diverging from the center outwards, the peripheries of the plurality of support plates form a cylindrical shape matching the inner wall of the heat insulation tube 5, and the peripheries of the plurality of support plates are provided with heating wires wound therearound.

[0018] In this embodiment, a plurality of first protrusions 131 are provided in the first annular groove 13, a plurality of first notches 52 are provided on the first limiting ring 51, and the first protrusions 131 are inserted into the first notches 52. This structure prevents the heat insulation tube 5 from rotating in the inner wind tube body 1, making the positioning more reliable.

[0019] In this embodiment, a plurality of second protrusions 141 are provided in the second annular groove 14, a plurality of second notches 42 are provided on the second limiting ring 41, and the second protrusions 141 are inserted into the second notches 42. This structure prevents the fan mounting cylinder 3 and the filter bracket 4 from rotating in the inner cylinder body 1, making the positioning more reliable.

[0020] In this embodiment, a circuit board 6 is sleeved on the outer periphery of the fan installation cylinder 3, and the outer periphery of the circuit board 6 matches the shape of the inner wall of the inner fan cylinder body 1. During installation, the circuit board 6 can be installed by sleeved on the fan installation cylinder 3, which facilitates the assembly and positioning of the circuit board.

[0021] In this embodiment, a plurality of air flow holes 43 are provided on the second limiting ring 41. With this structure, when the fan is running, air can flow into the air flow holes 43 to cool the circuit board.

[0022] In this embodiment, a display screen bracket 7 is arranged near the air inlet side of the second limiting ring 41, a cylinder 8 with a filter screen at the end is sleeved at the end of the filter screen bracket 4, and four abutting parts 71 are evenly arranged around the circumference of the display screen bracket 7 toward the second limiting ring 41 side. The four abutting parts 71 are arranged around the outer periphery of the cylinder 8 and abut against the end of the cylinder 8. The inner side surfaces of the four abutting parts 71 are provided with step-shaped notches, and the outer periphery of the cylinder 8 abuts in the step-shaped notches, and there is a flow gap between the cylinder 8 and the display screen bracket 7. This structure is convenient for the installation and positioning of the filter screen.

[0023] In this embodiment, a buckle 9 is fixed to the inner air cylinder body 1 near the air outlet through a buckle, and a magnetic ring limiting ring 91 is provided at one end of the buckle 9 near the air outlet, and a magnetic ring 10 is sandwiched between the magnetic ring limiting ring 91 and the inner air cylinder body 1. The buckle 9 is provided to make the splicing of the first semi-cylinder 11 and the second semi-cylinder 12 more secure, and the magnetic ring 10 is used for magnetic attraction and positioning of the air outlet accessories of the hair dryer, and the buckle 9 is used to position the magnetic ring 10, so that the magnetic ring 10 is convenient to install and fix.

[0024] 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. An inner wind tube structure of a hair dryer, comprising an inner wind tube body (1), characterized in that: The inner air duct body (1) comprises a first semi-cylinder (11) and a second semi-cylinder (12); the first semi-cylinder (11) and the second semi-cylinder (12) are buckled together at the outer side of the interface to form the inner air duct body (1); a heating wire bracket (2), a fan installation cylinder (3) and a filter bracket (4) are sequentially arranged in the inner air duct body (1); the heating wire bracket (2) is arranged in the heat insulation cylinder (5); a first limiting ring (51) is arranged on the outer wall of the heat insulation cylinder (5); the fan installation cylinder (3) is connected to the filter bracket (4) by buckling; a second limiting ring (41) is arranged on the outer periphery of the filter bracket (4); a first annular groove (13) and a second annular groove (14) are arranged on the inner wall of the inner air duct body (1); the first limiting ring (51) is inserted into the first annular groove (13); and the second limiting ring (41) is inserted into the second annular groove (14).

2. The inner wind tube structure of a hair dryer according to claim 1, characterized in that: A plurality of first protrusions (131) are arranged in the first annular groove (13), a plurality of first notches (52) are arranged on the first limiting ring (51), and the first protrusions (131) are inserted into the first notches (52).

3. The inner wind tube structure of a hair dryer according to claim 1, characterized in that: A plurality of second protrusions (141) are arranged in the second annular groove (14), a plurality of second notches (42) are arranged on the second limiting ring (41), and the second protrusions (141) are inserted into the second notches (42).

4. The inner wind tube structure of a hair dryer according to claim 1, characterized in that: A circuit board (6) is sleeved on the outer periphery of the fan installation cylinder (3), and the outer periphery of the circuit board (6) matches the shape of the inner wall of the inner cylinder body (1).

5. The inner wind tube structure of a hair dryer as claimed in claim 4, characterized in that: The second limiting ring (41) is provided with a plurality of air flow holes (43).

6. The inner wind tube structure of a hair dryer according to claim 1, characterized in that: A display screen bracket (7) is arranged near the air inlet side of the second limiting ring (41); a cylinder (8) having a filter at the end is sleeved on the end of the filter bracket (4); a plurality of abutting portions (71) are arranged on the display screen bracket (7) towards the second limiting ring (41); the plurality of abutting portions (71) are arranged around the outer circumference of the cylinder (8) and abut against the end of the cylinder (8); and a flow gap is provided between the cylinder (8) and the display screen bracket (7).

7. The inner wind tube structure of a hair dryer according to claim 1, characterized in that: A buckle (9) is fixed to the inner air duct body (1) near the air outlet end by a buckle, and a magnetic ring limiting ring (91) is provided at one end of the buckle (9) near the air outlet, and a magnetic ring (10) is sandwiched between the magnetic ring limiting ring (91) and the inner air duct body (1).

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