Handle structure of hair dryer
Patent Information
- Authority / Receiving Office
- TW · TW
- Patent Type
- Applications
- Current Assignee / Owner
- PEGATRON
- Filing Date
- 2025-01-20
- Publication Date
- 2026-08-01
AI Technical Summary
Existing foldable hair dryers with fixed shaft connections face issues where the handle's center of gravity shifts rearward upon unfolding, making it difficult to hold and use, while a flush handle design compromises aesthetic appeal.
A rotating module with interlocking gears and a rocker mechanism adjusts the handle's axis position, allowing it to be flush with the hair dryer body when folded and closer to the center of gravity when unfolded, enhancing both aesthetics and usability.
The mechanism ensures the handle is flush with the body when folded for aesthetic appeal and positioned near the center of gravity when unfolded, improving user handling and maintaining a compact design.
Smart Images
Figure TWG2TA001069655_001 
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Figure TWG2TA001069655_003
Abstract
Description
Technical Field
[0001] The present disclosure relates to a handle structure of a hair dryer, in particular to a handle structure that can pivot relative to a hair dryer body. Prior Art
[0002] Existing foldable hair dryers often use a fixed shaft connection. If this connection method is to make one end of the handle flush with the rear side of the hair dryer body after folding to maintain the overall appearance of beauty and simplicity, the axis of the shaft will be arranged close to the rear side of the hair dryer body. However, in this arrangement, after the handle is unfolded, the handle will be close to the rear side of the hair dryer body, causing the overall center of gravity to shift to the rear side and making it difficult to hold and use. If the center of gravity of the handle is taken into consideration, the axis of the shaft needs to be close to the center of gravity of the hair dryer, and the axis of the shaft will be far away from the rear side of the hair dryer body. After the handle is rotated and folded in this position, one end of the handle will be spaced away from the rear side of the hair dryer body, making the appearance less beautiful and affecting consumers' desire to buy. Summary of the invention
[0003] In view of the above, the present disclosure provides, in one embodiment, a handle structure of a hair dryer, including a body, a handle, and a rotating module. The handle pivots relative to the body between a folded position and an unfolded position. The rotating module connects the body and the handle, and includes a first gear, a second gear, a third gear, and a rocker. The first gear is fixed to the body, the second gear is fixed to the handle, and the third gear is simultaneously meshed with the first gear and the second gear. The rocker has a first end and a second end opposite to each other, the first end is pivoted to the first gear and is coaxial with the first gear, the second end is pivoted to the second gear and is coaxial with the second gear, and the third gear is pivoted to the rocker.
[0004] Thus, through the setting of the rotating module, when the handle is rotated to the folded position, the rotating shaft of the handle (the axis position of the second gear) will be biased to the rear side of the body, and at this time, one end of the handle can be designed to be flush with the rear end of the body. When the handle is rotated to the unfolded position, the action of the gear and the rocker will cause the rotating shaft of the handle (the axis position of the second gear) to move forward from the rear side of the body, so that the handle in the unfolded position is located close to the overall center of gravity, making it easier for the user to hold and use. In this way, both the beauty and the user experience of the hair dryer can be taken into account. Simple diagram description
[0005] FIG. 1 is a three-dimensional view of a handle of a hair dryer in a folded position according to an embodiment of the present disclosure.
[0006] FIG. 2 is a perspective view of a handle of a hair dryer according to an embodiment of the present disclosure in an unfolded position.
[0007] FIG. 3 is a perspective view of a hair dryer according to an embodiment of the present disclosure.
[0008] FIG. 4 is a schematic diagram of a rotating module according to an embodiment of the present disclosure.
[0009] FIG. 5 is a perspective view of the handle of the hair dryer according to an embodiment of the present disclosure unfolding from the folded position (I).
[0010] FIG. 6 is a perspective view of the handle of the hair dryer according to an embodiment of the present disclosure unfolding from the folded position (second).
[0011] FIG. 7 is a perspective view of a handle of a hair dryer in an unfolded position according to an embodiment of the present disclosure. Implementation
[0012] The following embodiments are presented for detailed description. However, the embodiments are only used as examples and do not limit the scope of protection of the present disclosure. In addition, some elements are omitted in the drawings in the embodiments to clearly show the technical features of the present disclosure. The same reference numerals will be used to represent the same or similar elements in all drawings.
[0013] Please refer to Figures 1 to 3. Figure 1 is a three-dimensional view of the handle of a hair dryer in a folded position according to an embodiment of the present disclosure, Figure 2 is a three-dimensional view of the handle of a hair dryer in an unfolded position according to an embodiment of the present disclosure, and Figure 3 is a perspective schematic view of a hair dryer in an embodiment of the present disclosure. The handle structure of the hair dryer in this example includes a body 10, a handle 20, and a rotating module 30. The handle 20 can be pivoted relative to the body 10 in a folded position (as shown in Figure 1) and an unfolded position (as shown in Figure 2). As can be seen from Figure 3, the rotating module 30 connects the body 10 and the handle 20.
[0014] FIG4 is a schematic diagram of a rotating module according to an embodiment of the present disclosure. As can be seen from FIG3 and FIG4, the rotating module 30 includes a first gear 31, a second gear 32, a third gear 33 and a rocker 34. The first gear 31 is fixed to the body 10 so that the first gear 31 does not rotate relative to the body 10. The first gear 31 can be fixed by extending a locking plate from the front side of the body 10 to the position of the first gear 31, so that the overall thickness of the locking plate and the first gear 31 is still maintained at a relatively small thickness, so that when the handle 20 rotates to the first gear 31, the corresponding opening can be narrower to avoid affecting the structural strength and aesthetics of the handle 20.
[0015] The second gear 32 is fixed to the handle 20. The second gear 32 is fixed at the end of the handle 20 that is closer to the body 10 when the handle 20 is in the unfolded position. The second gear 32 is also completely fixed to the handle 20 and does not rotate relative to the handle 20. The second gear 32 can be fixed by protruding a fixed shaft at a corresponding position of the handle 20 or a plate extending from left to right to the middle to penetrate the second gear 32 or clamp the second gear 32, but the teeth of the second gear 32 are exposed. The third gear 33 is meshed with the first gear 31 and the second gear 32 at the same time.
[0016] The rocker 34 has a first end 34a and a second end 34b opposite to each other. The first end 34a is pivoted to the first gear 31 and is coaxial with the first gear 31 C1. The second end 34b is pivoted to the second gear 32 and is coaxial with the second gear 32 C2. The third gear 33 is pivoted to the rocker 34.
[0017] FIG5 is a perspective view of the handle of the hair dryer of an embodiment of the present disclosure unfolded from the folded position (I), FIG6 is a perspective view of the handle of the hair dryer of an embodiment of the present disclosure unfolded from the folded position (II), and FIG7 is a perspective view of the handle of the hair dryer of an embodiment of the present disclosure in the unfolded position. Next, please refer to FIG3 to FIG7. As shown in FIG3, when the handle 20 of the hair dryer is in the folded position, the handle 20 will be attached to the body 10, and at this time, it can be designed that one end of the handle 20 (the right end in FIG3) is flush with the rear end of the body 10 (the right end in FIG3), so that the appearance is flatter and more beautiful.
[0018] Then, the handle 20 can be operated to pivot relative to the body 10 to the unfolded position. As shown in FIGS. 5 to 7 , when the handle 20 is operated to rotate counterclockwise, the second gear 32 fixed to the handle 20 will be driven to rotate counterclockwise. At this time, the third gear 33 meshed with the second gear 32 will be driven to rotate clockwise. Since the third gear 33 is meshed with the first gear 31 at the same time but the first gear 31 is fixed, the third gear 33 will move along the first gear 31 during the clockwise rotation. As shown in FIGS. 3 and 7 , the third gear 33 moves from the right side of the first gear 31 to the lower side of the first gear 31. Since the third gear 33 is also pivoted to the rocker 34, the third gear 33 will also drive the rocker 34 to move when it moves. Since the first end 34a of the rocker 34 is pivoted to the axis C1 of the first gear 31, when the rocker 34 is driven, it will rotate clockwise with the axis C1 of the first gear 31 as the rotation center. When the rocker 34 moves clockwise, the second gear 32 is also driven to move accordingly. Since the second gear 32 is fixed to the handle 20, the handle 20 is also driven to move accordingly.
[0019] Thus, through the setting of the rotating module 30, when the handle 20 is rotated to the folded position, the rotating shaft of the handle 20 (the axis C2 position of the second gear 32) will be biased to the rear side of the body 10, and at this time, one end of the handle 20 can be designed to be flush with the rear end of the body 10. When the handle 20 is rotated to the unfolded position, the operation of the gear and the rocker 34 will cause the rotating shaft of the handle 20 (the axis C2 position of the second gear 32) to move forward from the rear side of the body 10, so that the handle 20 in the unfolded position is located close to the overall center of gravity, making it easier for the user to hold and use. In this way, the beauty and user experience of the hair dryer (i.e., the requirements of the center of gravity position) can be taken into account at the same time.
[0020] In one embodiment, as shown in FIG. 1 , the lower side of the body 10 has a groove 11, and when in the folded position, the handle 20 is accommodated in the groove 11 in such a way that its long axis direction (left-right direction in the drawing) is slightly parallel to the long axis direction of the body 10. This method can make the hair dryer more compact after folding.
[0021] As shown in FIG. 2 and FIG. 7 , in the unfolded position, there is a distance D between one end of the handle 20 and the rear end of the body 10. The end of the handle 20 moves forward from the position close to the rear end of the body 10 to the position with the distance D, so that the handle 20 can be moved to a position closer to the center of gravity of the body 10. In this way, the handle 20 can be held more conveniently because it is held at a position closer to the center of gravity.
[0022] As can be seen from FIG3 , the body 10 has an opening 12 located at the lower side of the body 10 and at the rear side, and the end of the handle 20 is inserted into the opening 12 when in the unfolded position (as shown in FIG7 ). Thus, the handle 20 can pass through the opening and enter the body 10 after rotation, so the movement of the handle 20 will not be affected.
[0023] As can be seen from FIG. 4 , the rocker 34 includes a first portion 341 and a second portion 342. The first portion 341 has a first end 3411 and a second end 3412 opposite to each other, which correspond to the first end 34a of the rocker 34 and the second end 34b of the rocker 34 described above. The second portion 342 extends outwardly from between the first end 3411 and the second end 3412 of the first portion 341. The first gear 31 is pivotally connected to the first end 3411 of the first portion 341, the second gear 32 is pivotally connected to the second end 3412 of the first portion 341, and the third gear 33 is pivotally disposed on the second portion 342. This configuration makes the axis C3 of the third gear 33 not on the straight path connecting the axis C1 of the first gear 31 and the axis C2 of the second gear 32. Thus, by setting the third gear 33 on the eccentric side of the straight path connecting the axis C1 of the first gear 31 and the axis C2 of the second gear 32, the relative positions of the first gear 31 and the second gear 32 can be made closer, and the distance between the first gear 31 and the second gear 32 does not need to be increased due to the size of the third gear 33. The length of the rocker 34 does not need to be too long, and can be maintained at the minimum required length.
[0024] In this embodiment, the pitch diameters of the first gear 31 and the third gear 33 are tangent, and the pitch diameters of the second gear 32 and the third gear 33 are tangent. In this way, the relative motion of the first gear 31 and the third gear 33, and the relative motion of the second gear 32 and the third gear 33 can be smoother.
[0025] Furthermore, the gear modules of the second gear 32 and the third gear 33 can be made the same. When the second gear 32 drives the third gear 33 to rotate, it can save more effort, and a single-size gear can be used for the second gear 32 and the third gear 33, which can also reduce the production, preparation and inventory management of different components.
[0026] The first gear 31 has teeth within the range where the third gear 33 rotates relative to the first gear 31. The aforementioned range may be the range where the third gear 33 is driven to rotate when the handle 20 rotates between the folded position and the unfolded position. In other words, the teeth on the first gear 31 may be provided only between the position where the third gear 33 meshes with the first gear 31 in FIG. 3 and the position where the third gear 33 meshes with the first gear 31 in FIG. 7. Other positions may be provided with teeth as shown in this embodiment, or may not be provided with teeth.
[0027] As shown in FIG. 3 , when the handle 20 is in the folded position, the third gear 33 protrudes from the handle 20 . As shown in FIG. 7 , when the handle 20 is in the extended position, the third gear 33 is accommodated in the handle 20 . In this way, when the handle 20 moves to the extended position, the outer surface of the handle 20 can be kept beautiful without exposing the internal components. In the folded position, the third gear 33 can be slightly protruded from the handle 20 , so that the third gear 33 does not need to be larger or arranged closer to the inside of the handle 20 . Because, if the third gear 33 is arranged closer to the inside of the handle 20 , it may cause the end of the handle 20 to enter the body 10 too much after the rotation.
[0028] In summary, by setting the rotating module 30, the aesthetics and the user experience (i.e., the center of gravity position requirement) of the hair dryer can be taken into consideration at the same time. Specifically, when the handle 20 is rotated to the folded position, the rotation axis of the handle 20 (the axis C2 position of the second gear 32) will be biased toward the rear side of the body 10. At this time, one end of the handle 20 can be designed to be flush with the rear end of the body 10 to meet the aesthetic requirements. When the handle 20 is rotated to the unfolded position, the operation of the gear and the rocker 34 will cause the rotation axis of the handle 20 (the axis C2 position of the second gear 32) to move forward from the rear side of the body 10, so that the handle 20 in the unfolded position is located close to the overall center of gravity, making it easier for the user to hold and use.
[0029] 10:Ontology
[0030] 11: Groove
[0031] 12: Opening
[0032] 20: Grip
[0033] 30: Rotation module
[0034] 31: First gear
[0035] 32: Second gear
[0036] 33: Third gear
[0037] 34: Joystick
[0038] 34a: First end
[0039] 34b: Second end
[0040] 341: Part 1
[0041] 3411: First end
[0042] 3412: Second end
[0043] 342: Part 2
[0044] C1, C2, C3: Axis
[0045] D: Spacing
Claims
1. A handle structure for a hair dryer, comprising: one body; A handle pivotally movable relative to the body between a folded position and an extended position; And a rotating module connecting the main body and the handle, the rotating module includes: a first gear fixed to the main body; a second gear fixed to the handle; a third gear meshed with the first gear and the second gear at the same time; and a rocker having a first end and a second end opposite to each other, the first end pivotally connected to the first gear and coaxially with the first gear, the second end pivotally connected to the second gear and coaxially with the second gear, and the third gear pivotally connected to the rocker.
2. The handle structure of the hair dryer as described in claim 1, wherein in the folded position, one end of the handle is flush with the rear end of the body.
3. The handle structure of the hair dryer as described in claim 1, wherein the lower side of the body has a groove, and when in the folded position, the handle is accommodated in the groove in such a way that its long axis direction is slightly parallel to the long axis direction of the body.
4. The handle structure of the hair dryer as described in claim 1, wherein in the unfolded position, there is a distance between one end of the handle and the rear end of the body.
5. The handle structure of the hair dryer as described in claim 1, wherein the body has an opening located at the lower side of the body near the rear side, and one end of the handle is inserted into the opening when in the unfolded position.
6. A handle structure for a hair dryer as described in claim 1, wherein the rocker comprises a first part and a second part, the first part having a first end and a second end opposite to each other, the second part extending outward from between the first end and the second end of the first part, the first gear being pivotally connected to the first end of the first part, the second gear being pivotally connected to the second end of the first part, and the third gear being pivotally disposed on the second part.
7. The handle structure of the hair dryer as described in claim 1, wherein the first gear is tangent to the pitch circle diameter of the third gear, and the second gear is tangent to the pitch circle diameter of the third gear.
8. The handle structure of the hair dryer as described in claim 1, wherein the gear modules of the second gear and the third gear are the same.
9. The handle structure of a hair dryer as described in claim 1, wherein the first gear has teeth within the range in which the third gear rotates relative to the first gear.
10. The handle structure of the hair dryer as described in claim 1, wherein when the handle is in the folded position, the third gear protrudes from the handle, and when the handle is in the unfolded position, the third gear is accommodated in the handle.