Folding electric hair dryer

Abstract

The utility model relates to hair dryer technical field especially is involved in a kind of folding hair dryer, including mainframe shell and handle shell, handle shell is hinged with connecting piece, mainframe shell is fixed in connecting piece, and mainframe shell is rotated folding or unfolding relative to handle shell by rotating connecting piece;First boss is protruded to the top of connecting piece, and first boss is equipped with first insertion slot;The bottom of mainframe shell is equipped with first insertion boss, and first insertion boss can be inserted into first insertion slot.Compared with prior art, since first insertion boss is protruded to the outer surface of mainframe shell, it does not invade the internal space of mainframe shell, can ensure in the case of equivalent size mainframe shell, to further optimize the installation layout of air duct, heating assembly and fan blade assembly, in the case of equivalent size air duct cross-sectional area, the overall size of mainframe shell can be made smaller, to further improve the convenience of user carrying folding hair dryer out.

Description

Technical Field

[0001] This utility model relates to the field of hair dryer technology, and in particular to a foldable hair dryer. Background Technology

[0002] Hair dryers are common household appliances used frequently in daily life, as they can quickly dry wet hair. In related technologies, hair dryers typically consist of a main unit and a handle. When the main unit and handle are assembled with a fixed structure, the overall size is large, making it difficult to fold or reduce the size, which is inconvenient to carry when traveling or going out, taking up a lot of luggage space and causing inconvenience to users. A foldable structure for the main unit and handle, on the other hand, can reduce the size and make it easier for users to carry.

[0003] However, during the actual research and development process, the inventors discovered that a connector is usually required between the main unit and the handle. This connector hinges to the handle, allowing the main unit to rotate relative to the handle to fold. Assembly of the main unit and connector typically involves using mounting posts on the connector, which are then inserted into the mounting slots of the main unit. However, inserting the mounting posts into the main unit through the mounting slots occupies internal space, affecting the installation layout of the air duct, heating elements, and fan blades, thus preventing the overall size of the main unit from being made smaller.

[0004] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0005] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide a foldable hair dryer that effectively solves the technical defect in the existing technology where the installation of connecting parts intrudes into the internal space of the main unit.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a folding hair dryer, including a main body shell and a handle shell, wherein the handle shell is hinged to a connector, the main body shell is fixed to the connector, and the main body shell can be rotated and folded or unfolded relative to the handle shell by rotating the connector.

[0007] The connector has a first protrusion protruding upward at the top, and the first protrusion has a first insertion groove; the bottom of the main housing has a first insertion protrusion, which can be inserted into the first insertion groove.

[0008] The beneficial effects of the foldable hair dryer provided in this application are that, compared with the prior art, by setting a first plug-in protrusion on the main body shell, the first plug-in protrusion is inserted into the first plug-in slot to complete the assembly of the main body shell and the connector; since the first plug-in protrusion protrudes from the outer surface of the main body shell, it will not intrude into the internal space of the main body shell, and can ensure that the installation layout of the air duct, heating element and fan blade assembly can be further optimized under the same size of main body shell. Under the same size of air duct cross-sectional area, the overall size of the main body shell can be made smaller, so as to further improve the convenience of users carrying the foldable hair dryer when going out.

[0009] As a preferred embodiment, the first insertion protrusion is a circular insertion protrusion, and the first insertion groove is a circular insertion groove adapted to the insertion of the circular insertion protrusion; or,

[0010] The first mating protrusion is an elliptical mating protrusion, and the first mating groove is an elliptical mating groove that fits the elliptical mating protrusion; or...

[0011] The first insertion protrusion is a square insertion protrusion, and the first insertion slot is a square insertion slot adapted to the square insertion protrusion.

[0012] As a preferred embodiment, the connector and the handle housing are hinged together by a hinge structure, which includes a hinge hole and a hinge shaft rotatably mounted in the hinge hole; the connector is provided with a cable guard, which is arranged around the edge of the hinge hole.

[0013] As a preferred embodiment, the handle housing includes a left housing and a right housing, which are assembled together.

[0014] The top of the left and right shells has a hinge notch, the hinge shaft is located on the opposite side of the hinge notch, and the hinge hole penetrates the left and right sides of the connector.

[0015] As a preferred embodiment, the handle shell can extend in the vertical direction, and the first central axis of the handle shell is located at the center of the handle shell in the front-back and left-right directions. The hinge axis is perpendicular to the first central axis, and the hinge axis is moved forward a first distance relative to the first central axis.

[0016] The hinge hole is located at the center of the connector in the front-to-back direction.

[0017] As a preferred embodiment, the front surface of the connector is provided with a first arc-shaped portion with non-uniform curvature, and the rear surface of the connector is provided with a second arc-shaped portion with uniform curvature, wherein the center of the arc of the second arc-shaped portion coincides with the center of the hinge hole.

[0018] As a preferred embodiment, the connector has a hollow wire passage cavity, which passes through the bottom of the first insertion slot to form an upper wire passage opening and passes through the bottom of the connector to form a lower wire passage opening;

[0019] The wire protection baffle is located inside the wire passage cavity and is set around the edge of the hinge hole.

[0020] As a preferred embodiment, the connector has stop grooves on both the left and right sides, and the hinge hole penetrates the bottom surface of the stop groove;

[0021] The gear position groove has multiple gear position limiting grooves on its circumferential side, and a ring-shaped elastic element is provided on the opposite side of the hinge notch. The ring-shaped elastic element can be inserted into the gear position groove. The ring-shaped elastic element has a gear position limiting protrusion on its circumferential side, and the gear position limiting protrusion can be inserted into the gear position limiting groove.

[0022] As a preferred embodiment, the bottom surface of the gear groove is provided with an abutting protrusion, which can abut against the inner circumferential side of the annular elastic element.

[0023] As a preferred embodiment, the handle housing also includes a left outer shell and a right outer shell, the left outer shell covering the left housing and the right outer shell covering the right housing, and the left and right outer shells covering the rear side of the hinge notch. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural diagram of the foldable hair dryer provided in the embodiment of this application in a folded state;

[0026] Figure 2 This is a three-dimensional structural diagram of the foldable hair dryer provided in the embodiment of this application in its unfolded state;

[0027] Figure 3 yes Figure 2 The diagram shows a specific structural design of a folding hair dryer in which the hinge shaft is shifted forward and eccentric relative to the first central axis.

[0028] Figure 4 yes Figure 2 A partial structural cross-sectional view of the folding hair dryer shown;

[0029] Figure 5 yes Figure 2 An exploded view of a partial structure of a folding hair dryer is shown.

[0030] Figure 6 yes Figure 5 A partial three-dimensional structural diagram of a foldable hair dryer is shown;

[0031] Figure 7 yes Figure 6 A partial three-dimensional structural diagram of a foldable hair dryer is shown;

[0032] Figure 8 yes Figure 7 A partial structural cross-sectional view of the main unit housing and connecting parts in the folding hair dryer shown;

[0033] Figure 9 yes Figure 8 The diagram shows the wiring structure of the main unit housing and connectors in a foldable hair dryer.

[0034] The following are the labeling elements in the figure:

[0035] 100. Foldable hair dryer;

[0036] 10. Main unit housing; 101. Air duct; 102. Air outlet; 103. Air inlet; 11. First insertion protrusion; 111. First screw hole; 112. First clearance cavity;

[0037] 20. Handle housing; 201. Left side housing; 202. Right side housing; 203. Hinge notch; 204. Left side outer shell; 205. Right side outer shell; 21. Hinge shaft; 22. Circular elastic element; 221. Gear position limiting protrusion;

[0038] 30. Connector; 301. First arc-shaped portion; 302. Second arc-shaped portion; 303. Cable passage cavity; 304. Upper cable passage opening; 305. Lower cable passage opening; 306. Cable guard plate; 31. Hinge hole; 32. First boss; 321. First insertion groove; 322. First through hole; 33. Gear groove; 331. Gear limiting groove; 332. Abutting protrusion;

[0039] a1, First central axis; L1, First distance;

[0040] 200. Cables. Detailed Implementation

[0041] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0042] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0043] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0045] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0046] Please refer to the following: Figures 1 to 9 The foldable hair dryer 100 provided in the embodiments of this application will now be described. The foldable hair dryer 100 includes: a main body shell 10 and a handle shell 20.

[0047] The handle housing 20 is hinged to a connector 30, and the main housing 10 is fixed to the connector 30. By rotating the connector 30, the main housing 10 can be rotated, folded, or unfolded relative to the handle housing 20. The connector 30 and the handle housing 20 are hinged together by a hinge structure, which includes a hinge hole 31 and a hinge shaft 21 rotatably mounted in the hinge hole 31. The handle housing 20 can extend in the vertical direction, and the first central axis a1 of the handle housing 20 is located at the center position in the front-back and left-right directions. The hinge shaft 21 is perpendicular to the first central axis a1, and the hinge shaft 21 is moved forward by a first distance L1 relative to the first central axis a1, so that the rotation center of the main housing 10 is eccentrically set forward relative to the first central axis a1 of the handle housing 20.

[0048] Specifically, by moving the hinge shaft 21 forward by a first distance L1 relative to the first central axis a1 of the handle housing 20, the rotation center of the main housing 10 is set off-center, so that after the main housing 10 and the handle housing 20 are folded, the main housing 10 can be set closer to one end of the handle housing 20, reducing the gap between the main housing 10 and the handle housing 20 in the folded state of the foldable hair dryer 100, thereby further reducing the volume of the foldable hair dryer 100 in the folded state and improving the structural compactness of the foldable hair dryer 100, so as to facilitate user carrying.

[0049] In some embodiments, the handle housing 20 includes a left housing 201 and a right housing 202, which are assembled together. A hinge notch 203 surrounds the top of the left housing 201 and the right housing 202. A hinge shaft 21 is located on the opposite side of the hinge notch 203, and a hinge hole 31 penetrates the left and right sides of the connector 30. The hinge hole 31 is located at the center of the connector 30 in the front-rear direction. This structure allows the connector 30 to move forward relative to the handle housing 20, enabling the use of a shorter connector 30 in the vertical direction. After the main housing 10 is rotated relative to the handle housing 20 and folded, the gap between the main housing 10 and the handle housing 20 in the folded state can be further reduced, resulting in a smaller overall size of the foldable hair dryer 100. Because it occupies less space, it is easier for users to carry or store it when going out.

[0050] Preferably, the front surface of the connector 30 is provided with a first arc-shaped portion 301 with non-uniform curvature, and the rear surface of the connector 30 is provided with a second arc-shaped portion 302 with uniform curvature. The center of the arc of the second arc-shaped portion 302 coincides with the center of the hinge hole 31. By setting the first arc-shaped portion 301 with non-uniform curvature, after the main body shell 10 is unfolded relative to the main body shell 10, the first arc-shaped portion 301 can completely cover the front side of the hinge notch 203, so that the front surface of the connector 30 can be flush with or nearly flush with the front surface of the handle shell 20. The overall shape is simple and smooth, conforms to the ergonomic principle, gives people a beautiful and harmonious visual experience, and enhances the overall grade and attractiveness of the product.

[0051] In other embodiments, the connector 30 has a first protrusion 32 protruding upward at its top, and the first protrusion 32 has a first insertion groove 321; the main housing 10 has a first insertion protrusion 11 at its bottom, which can be inserted into the first insertion groove 321. Compared with the prior art, by setting the first insertion protrusion 11 on the main housing 10 and inserting the first insertion protrusion 11 into the first insertion groove 321 to complete the assembly of the main housing 10 and the connector 30; since the first insertion protrusion 11 protrudes from the outer surface of the main housing 10, it will not intrude into the internal space of the main housing 10, and can ensure that the installation layout of the air duct 101, the heating element and the fan blade assembly can be further optimized under the same size main housing 10. Under the same size air duct 101 cross-sectional area, the overall size of the main housing 10 can be made smaller, so as to further improve the convenience of users carrying the foldable hair dryer 100 when going out.

[0052] Preferably, the first insertion protrusion 11 is a circular insertion protrusion, and the first insertion groove 321 is a circular insertion groove adapted to the insertion of the circular insertion protrusion; or, the first insertion protrusion 11 is an elliptical insertion protrusion, and the first insertion groove 321 is an elliptical insertion groove adapted to the elliptical insertion protrusion; or, the first insertion protrusion 11 is a square insertion protrusion, and the first insertion groove 321 is a square insertion groove adapted to the square insertion protrusion. This structure improves the insertion stability of the first insertion protrusion 11 and the first insertion groove 321, making it less prone to shaking or loosening between the main unit housing 10 and the handle housing 20.

[0053] Furthermore, after the first insertion protrusion 11 is inserted into the first insertion groove 321, the first insertion groove 321 can completely cover the first insertion protrusion 11; thus, the tightness and reliability of the connection between the first insertion protrusion 11 and the first insertion groove 321 are further enhanced.

[0054] Specifically, the connector 30 has a hollow wire passage cavity 303. The wire passage cavity 303 passes through the bottom of the first insertion groove 321 to form an upper wire passage port 304 and passes through the bottom of the connector 30 to form a lower wire passage port 305. A wire protection baffle 306 is provided inside the wire passage cavity 303. The wire protection baffle 306 is arranged around the edge of the hinge hole 31.

[0055] Preferably, the connector 30 has a first through hole 322 on the bottom surface of the first insertion groove 321, and the first insertion protrusion 11 has a first screw hole 111 at its bottom. When the first insertion protrusion 11 is inserted into the first insertion groove 321, the first through hole 322 can be coaxially arranged with the first screw hole 111, so that the screw can enter from the lower wire passage 305 and pass through the first through hole 322 to be screwed into the first screw hole 111, thereby fixing the main body shell 10 to the connector 30. The shape of the first insertion protrusion 11 and the first insertion groove 321 can enhance the connection between the main body shell 10 and the connector 30, and prevent the first screw from gradually loosening from the first screw hole 111 due to unreasonable force direction.

[0056] It is understandable that the connector 30 and the main housing 10 can also be fixed together by adhesive, fastening, or welding.

[0057] More specifically, the main unit housing 10 has an air duct 101, which penetrates the front surface of the main unit housing 10 to form an air outlet 102 and penetrates the rear surface of the main unit housing 10 to form an air inlet 103. A fan assembly and a heating assembly are installed inside the air duct 101. The fan assembly draws in external airflow from the air inlet 103 and flows through the air duct 101 to be blown out from the air outlet 102 to achieve the blowing function. The heating assembly can selectively heat the airflow in the air duct 101 to achieve the hot air blowing function.

[0058] Preferably, the first insertion protrusion 11 has a first clearance cavity 112 that extends through its upper and lower surfaces and connects to the air duct 101. The cables 200 of the fan assembly and heating assembly installed inside the main unit housing 10 can be arranged through the first clearance cavity 112 and the cable passage cavity 303 into the cavity of the handle housing 20, so that the fan assembly and heating assembly can be wired to the circuit board installed inside the handle housing 20.

[0059] More specifically, the connector 30 is provided with a cable guard 306, which is arranged around the edge of the hinge hole 31. Firstly, during the assembly of the hinge shaft 21 and the hinge hole 31, the cable is prevented from interfering with the installation position of the hinge shaft 21 (i.e., the hinge hole 31). This prevents the cable from being pressed during the insertion of the hinge shaft 21 into the hinge hole 31 and also guides the insertion of the hinge shaft 21, thereby improving the accuracy, convenience, and efficiency of the assembly. Secondly, during the rotation of the connector 30 and the handle housing 20, the cable is prevented from contacting the hinge shaft 21, reducing the possibility of wear on the cable sheath due to the rotation of the hinge shaft 21, thus improving the cable's service life and safety.

[0060] Preferably, the wire guard 306 is disposed inside the wire passage cavity 303 and surrounds the edge of the hinge hole 31.

[0061] In other embodiments, the connector 30 has a gear position groove 33 on both sides, and the hinge hole 31 penetrates the bottom surface of the gear position groove 33. The circumferential side of the gear position groove 33 has multiple gear position limiting grooves 331 spaced circumferentially. A circular elastic element 22 is provided on the opposite side of the hinge notch 203. The circular elastic element 22 can be inserted into the gear position groove 33. A gear position limiting protrusion 221 is provided on the circumferential side of the circular elastic element 22, which can be inserted into the gear position limiting groove 331. By providing the circular elastic element 22, on the one hand, the main body shell 10 can have a certain resistance when rotating relative to the handle shell 20, and the main body shell 10 can be prevented from shaking relative to the handle shell 20, thus improving the user experience. On the other hand, by providing the gear position limiting protrusion 221 and the gear position limiting groove 331, the angle of rotation of the main body shell 10 relative to the handle shell 20 can be limited according to actual needs, thereby achieving different folded or unfolded states.

[0062] Preferably, the bottom surface of the gear position groove 33 is provided with an abutting protrusion 332, which can abut against the inner circumferential side of the annular elastic member 22. This structure ensures that the gear position limiting protrusion 221 can be reliably inserted into the gear position limiting groove 331.

[0063] In other embodiments, the handle housing 20 further includes a left outer shell 204 and a right outer shell 205. The left outer shell 204 covers the left housing 201, and the right outer shell 205 covers the right housing 202. The left and right outer shells 204 and 205 also cover the rear side of the hinge notch 203. This structure allows the left and right outer shells 204 and 205 to cover the rear side of the hinge notch 203, ensuring that the second arcuate portion 302 of the connector is always hidden. This enveloping design increases the connection strength between the handle and the body, making the product more robust and reliable. It also prevents the user's hand from contacting sharp parts of the body, improving safety during use.

[0064] The above are merely preferred embodiments of the present utility model, and only specifically describe the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.

Claims

1. A folding hair dryer, comprising a main body shell (10) and a handle shell (20), wherein the handle shell (20) is hinged to a connector (30), the main body shell (10) is fixed to the connector (30), and the main body shell (10) can be rotated and folded or unfolded relative to the handle shell (20) by rotating the connector (30); Its features are, The connector (30) has a first boss (32) protruding upward at the top, and the first boss (32) has a first insertion groove (321); the main housing (10) has a first insertion protrusion (11) at the bottom, and the first insertion protrusion (11) can be inserted into the first insertion groove (321).

2. The foldable hair dryer according to claim 1, characterized in that, The first insertion protrusion is a circular insertion protrusion, and the first insertion slot is a circular insertion slot adapted to accommodate the insertion of the circular insertion protrusion; or... The first mating protrusion is an elliptical mating protrusion, and the first mating groove is an elliptical mating groove that fits the elliptical mating protrusion; or... The first insertion protrusion is a square insertion protrusion, and the first insertion slot is a square insertion slot adapted to the square insertion protrusion.

3. The foldable hair dryer according to claim 1 or 2, characterized in that, The connector (30) and the handle housing (20) are hinged together by a hinge structure, which includes a hinge hole (31) and a hinge shaft (21) rotatably mounted in the hinge hole (31); the connector (30) is provided with a wire guard (306), which is arranged around the edge of the hinge hole (31).

4. The foldable hair dryer according to claim 3, characterized in that, The handle housing (20) includes a left housing (201) and a right housing (202), which are assembled together. The top of the left shell (201) and the right shell (202) are surrounded by a hinge notch (203), the hinge shaft (21) is located on the opposite side of the hinge notch (203), and the hinge hole (31) passes through the left and right sides of the connector (30).

5. The foldable hair dryer according to claim 4, characterized in that, The handle housing (20) can extend in the vertical direction, and the first central axis (a1) of the handle housing (20) is located at the center of the handle housing (20) in the front-back and left-right directions. The hinge shaft (21) is perpendicular to the first central axis (a1), and the hinge shaft (21) moves forward a first distance (L1) relative to the first central axis (a1). The hinge hole (31) is located at the center of the front-rear direction of the connector (30).

6. The folding hair dryer according to claim 4 or 5, characterized in that, The front surface of the connector (30) is provided with a first arc-shaped part (301) with non-uniform curvature, and the rear surface of the connector (30) is provided with a second arc-shaped part (302) with uniform curvature. The center of the arc of the second arc-shaped part (302) coincides with the center of the hinge hole (31).

7. The foldable hair dryer according to claim 3, characterized in that, The connector (30) has a hollow wire passage cavity (303), which passes through the bottom of the first insertion slot (321) to form an upper wire passage port (304) and passes through the bottom of the connector (30) to form a lower wire passage port (305). The wire guard (306) is located inside the wire passage cavity (303) and is arranged around the edge of the hinge hole (31).

8. The folding hair dryer according to claim 4, 5, or 7, characterized in that, The connector (30) has a stop groove (33) on both the left and right sides, and the hinge hole (31) penetrates the bottom surface of the stop groove (33); The gear position groove (33) has multiple gear position limiting grooves (331) on its circumferential side, and the hinge notch (203) has an annular elastic element (22) on its opposite side. The annular elastic element (22) can be inserted into the gear position groove (33). The annular elastic element (22) has a gear position limiting protrusion (221) on its circumferential side, and the gear position limiting protrusion (221) can be inserted into the gear position limiting groove (331).

9. The foldable hair dryer according to claim 8, characterized in that, The bottom surface of the groove (33) of the gear position groove is provided with an abutting protrusion (332), which can abut against the inner circumferential side of the annular elastic member (22).

10. The folding hair dryer according to claim 4, 5, 7, or 9, characterized in that, The handle housing (20) also includes a left outer shell (204) and a right outer shell (205), with the left outer shell (204) covering the left shell (201) and the right outer shell (205) covering the right shell (202), and the left outer shell (204) and the right outer shell (205) covering the rear side of the hinge notch (203).

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