Folding blow device

Abstract

The utility model discloses a kind of folding blowing equipment.The folding blowing equipment includes first cylinder and second cylinder, and pivot structure;Pivot structure pivotally connects the first cylinder and the second cylinder, so that the first cylinder and the second cylinder can be relatively rotated, to have stretched state and bending state;When in the stretched state, the first cylinder and the second cylinder are linearly arranged, and the rotation center of the pivot structure is offset and arranged on the same side of the central axis of the first cylinder and the central axis of the second cylinder.The technical scheme provided by the utility model makes the folding blowing equipment not only convenient to store, but also the adjustable range of the first cylinder and the second cylinder is larger, and can better meet the use requirements of different users, use more conveniently, and user experience is better.

Description

Technical Field

[0001] This utility model relates to the technical field of household appliances, specifically to a folding hair dryer. Background Technology

[0002] Hair dryers, such as hairdryers, are widely used in daily life. A hairdryer generally consists of two parts: a handle for the user to hold and a nozzle for blowing heated air. Traditional hairdryers come in two forms: non-foldable and foldable. Non-foldable hairdryers are generally L-shaped, fixing the relative positions of the handle and nozzle, but they are bulky and difficult to store. Foldable hairdryers can be in an L-shaped working state or folded from the L-shape, bringing the handle and nozzle closer together. However, this type of hairdryer can only operate in one of these states, and turning the handle requires more effort, limiting its functionality. Utility Model Content

[0003] Therefore, this utility model aims to solve the problem that the working mode of traditional hair dryers is relatively simple and cannot be adapted to different user needs.

[0004] To achieve the above objectives, this utility model proposes a folding blower device, comprising: First cylinder and second cylinder; A pivoting structure pivotally connects the first cylinder and the second cylinder, allowing the first cylinder and the second cylinder to rotate relative to each other to have an extended state and a bent state; When in the extended state, the first cylinder and the second cylinder are arranged in a straight line, and the rotation center of the pivot structure is offset on the same side of the central axis of the first cylinder and the central axis of the second cylinder.

[0005] Optionally, during the relative rotation of the first cylinder and the second cylinder, the central axis of the first cylinder and the central axis of the second cylinder lie on the same plane; and / or, When in the extended state, the first cylinder and the second cylinder are coaxially arranged; and / or, The pivot axis of the pivot structure is perpendicular to the central axis of the first cylinder and / or the central axis of the second cylinder; and / or, When in the extended state, on the orthogonal projection along the axial direction of the pivot structure, the projections of the first cylinder and the second cylinder are both located on the same side of the projection of the plane containing the pivot axis of the pivot structure.

[0006] Optionally, when rotating from the extended state to the bent state, the first side of the first cylinder and the first side of the second cylinder move toward each other; when in the extended state, the first side of the first cylinder and the first side of the second cylinder are flush. The pivot axis of the pivoting structure is located outside the first side of the first cylinder and / or the second cylinder; or... The pivot axis of the pivot structure is located on the straight line of the first side of the first cylinder and / or the second cylinder.

[0007] Optionally, the first cylinder has a first connecting end and a first free end disposed opposite to each other along its axial direction, and the second cylinder has a second connecting end and a second free end disposed opposite to each other along its axial direction; the pivoting structure connects the first connecting end and the second connecting end; the pivoting structure includes: The first rotating part is disposed at the first connecting end of the first cylinder; The second rotating part is disposed at the second connecting end of the second cylinder and is rotatably connected to the first rotating part; The shielding part is rotatably connected to the rotatable connection between the first rotating part and the second rotating part; When in the extended state, the shielding portion is located inside the first cylinder and the second cylinder; when in the bent state, at least a portion of the shielding portion is exposed from the first cylinder and the second cylinder.

[0008] Optionally, the first rotating part includes a first rotating sleeve disposed at the first connecting end, the first rotating sleeve being disposed protruding from the shaft end of the first cylinder and being eccentrically disposed in the radial direction of the first cylinder; The second cylindrical body includes a first half-shell and a second half-shell connected together; the second rotating part includes a first sleeve and a second sleeve connected together, the first sleeve being connected to the first half-shell and the second sleeve being connected to the second half-shell, and the first sleeve and the second sleeve being rotatably connected to the two ends of the first rotating sleeve along its axial direction.

[0009] Optionally, the first rotating sleeve is arranged in a ring shape, and at least a portion of the first rotating sleeve protrudes from the first cylinder in the radial direction of the first cylinder, and a rotating column is provided on the inner ring side of the first rotating sleeve; Between one end of the rotating column in the axial direction and the first sleeve, one of them is provided with a first rotating cam, and the other is provided with a first rotating hole that rotates and engages with the first rotating cam. Between the other end of the rotating column in the axial direction and the second sleeve, one of them is provided with a second rotating cam, and the other is provided with a second rotating hole that rotates and engages with the second rotating cam.

[0010] Optionally, the shielding portion is arc-shaped and has a first connecting portion and a second connecting portion that are relatively spaced apart along the axial direction of its circumferential surface; The first connecting part is connected between one end of the axial direction of the rotating column and the first sleeve, and the second connecting part is connected between the other end of the axial direction of the rotating column and the second sleeve. The arc surface where the shielding part is located is concentrically arranged with the arc surface where the first rotating sleeve is located.

[0011] Optionally, the pivoting structure further includes a first limiting part and a second limiting part that are spaced apart along the circumference of the rotating column; When switching from the bent state to the extended state, the first cylinder rotates relative to the blocking portion in a first direction, and the second cylinder rotates relative to the blocking portion in a second direction; in the extended state, the first limiting portion abuts against the first circumferential end of the blocking portion to restrict the first cylinder from continuously rotating in the first direction, and the second limiting portion abuts against the second circumferential end of the blocking portion to restrict the second cylinder from continuously rotating in the second direction; and / or, The pivoting structure further includes a third limiting part and a fourth limiting part that are spaced apart along the circumference of the rotating column; When switching from the extended state to the bent state, the first cylinder rotates relative to the blocking portion in a second direction, and the second cylinder rotates relative to the blocking portion in a first direction; when in the bent state, the third limiting portion abuts against at least a portion of the blocking portion to restrict the first cylinder from continuously rotating in the second direction, and the fourth limiting portion abuts against at least a portion of the blocking portion to restrict the second cylinder from continuously rotating in the first direction.

[0012] Optionally, the folding blower further includes a fan assembly and an air guide tube. The fan assembly includes a fan bracket and a fan body disposed within the fan bracket. The air guide tube is disposed inside the first cylinder and one end is connected to the fan bracket. The air guide tube has a first end connected to the fan bracket and a second end disposed near the air outlet end of the first cylinder. The central axis of the first end of the air guide tube and the central axis of the second end of the air guide tube are arranged at an angle.

[0013] Optionally, the folding blower further includes a panel bracket connected to the first sleeve body, the panel bracket being disposed on the side of the first sleeve body facing away from the second sleeve body and forming an interlayer between it and the first rotating sleeve; The fan assembly also includes a conductor wire, and a conductor post is provided in the interlayer. The conductor wire can be wound from the fan body into the interlayer and enter the second cylinder through the conductor post.

[0014] The technical solution provided by this utility model has the following beneficial effects: The folding hair dryer provided by this utility model includes a first cylinder, a second cylinder, and a pivot structure. The pivot structure connects the first and second cylinders, allowing them to rotate relative to each other. This adjusts the angle between the first and second cylinders, enabling the folding hair dryer to operate in both extended and bent states. In the extended state, the first and second cylinders are arranged in a straight line, and the folding hair dryer has an overall rod-like structure. This allows for easy connection and installation of hair combing accessories at the air outlet, ensuring better airflow along the hair's direction for easier combing or curling. Furthermore, the pivot structure's rotation center is offset to the same side as the central axis of both the first and second cylinders. In the extended state, the pivot structure does not occupy axial space along the axes of the first and second cylinders, ensuring a smaller axial dimension of the folding hair dryer in the extended state and making it easier for users to operate. Furthermore, both the first and second cylinders can operate at any bending angle and at different angles, making the folding hair dryer more versatile in its operation. When the first and second cylinders are extended, the folding hair dryer is easier to store and facilitates combing and curling. When folded, the first and second cylinders can operate in an "L" or "V" shape to meet the needs of special usage environments. The greater adjustability of the first and second cylinders allows for greater satisfaction of different users' needs, making it more convenient and providing a better user experience. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of an embodiment of the folding blower (in an extended state) provided by this utility model; Figure 2 for Figure 1 A structural schematic diagram from another perspective of the folding blower device described herein (in its extended state); Figure 3 for Figure 1 A schematic diagram of one embodiment of the folding blower device described herein (in a bent state); Figure 4 for Figure 3 A structural schematic diagram from another perspective of the folding blower device described herein (in a bent state); Figure 5 for Figure 4 A cross-sectional structural diagram of the folding blower device described herein (in a bent state); Figure 6 for Figure 4 Another cross-sectional structural diagram of the folding blower device described herein (in a bent state); Figure 7 for Figure 4 Another cross-sectional structural diagram of the folding blower device described herein (in a bent state); Figure 8 for Figure 3 An exploded view of the folding blower device described herein (in a bent state); Figure 9 for Figure 3 A schematic diagram of the structure of the folding blower device described herein (in its extended state); Figure 10 for Figure 9 A structural schematic diagram from another perspective of the folding blower device described herein (in its extended state); Figure 11 for Figure 9 A structural schematic diagram from another perspective of the folding blower device described herein (in its extended state); Figure 12 for Figure 11 A cross-sectional structural diagram of the folding blower device described herein (in its extended state); Figure 13 for Figure 9 An exploded view of the folding blower device described herein (in its extended state); Figure 14 for Figure 1 A cross-sectional structural schematic diagram of another embodiment of the folding blower device described herein (in the extended state); Figure 15 for Figure 14 Another cross-sectional view of the folding blower device described herein (in its extended state); Figure 16 for Figure 14 A cross-sectional view of the pivot structure of the folding blower device described herein (in its extended state); Figure 17 for Figure 14 A cross-sectional structural diagram of the folding blower device described herein (in a bent state); Figure 18 for Figure 14 An exploded view of the folding blower device described herein (in a bent state); Figure 19 for Figure 1 A partial cross-sectional structural diagram of the folding blower device described herein (in a bent state); Figure 20 for Figure 1 Another partial cross-sectional structural diagram of the folding blower device described herein (in a bent state); Figure 21 for Figure 1 Another cross-sectional structural diagram of the folding blower device described in the figure (in a bent state).

[0017] Explanation of icon numbers: 100 - Folding blower; 1 - First cylinder; 11 - Air outlet; 2 - Second cylinder; 21 - Air inlet; 22 - First half-shell; 23 - Second half-shell; 3 - Pivoting structure; 31 / 31' - First rotating part; 311 / 311' - First rotating sleeve; 3111 - Rotating column; 312 - Air passage hole; 32 / 32' - Second rotating part; 321 - Second rotating sleeve; 3211 / 3211' - First sleeve; 3212 / 3212' - Second sleeve; 33 - Shaft part; 331-Locking shaft; 332-End cap; 333-Pressure sleeve; 34-Shielding part; 341-First connecting part; 342-Second connecting part; 343-Limiting rib; 35-First limiting part; 36-Second limiting part; 37-Third limiting part; 371-First boss; 372-Second boss; 38-Fourth limiting part; 381-Limiting protrusion; 4-Circuit structure; 5-Fan assembly; 51-Fan bracket; 52-Fan body; 6-Air guide tube; 7-Panel bracket; 8-Air venting sleeve.

[0018] The realization of the purpose, functional characteristics and excellent effects of this utility model will be further explained below in conjunction with specific embodiments and accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] It should be noted that if the embodiments of this utility model involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] This utility model provides a folding blower device 100. For details, please refer to... Figure 1 , Figure 2 , Figure 3 and Figure 9 As shown, in this embodiment, the folding blower device 100 includes a first cylindrical body 1 and a second cylindrical body 2, as well as a pivoting structure 3. The pivoting structure 3 pivotally connects the first cylindrical body 1 and the second cylindrical body 2, allowing the first cylindrical body 1 and the second cylindrical body 2 to rotate relative to each other, thus having an extended state and a bent state. In the extended state, the first cylindrical body 1 and the second cylindrical body 2 are arranged in a straight line, and the rotation center of the pivoting structure 3 is offset on the same side of the central axis of the first cylindrical body 1 and the central axis of the second cylindrical body 2.

[0023] In this embodiment, the first cylinder 1 and the second cylinder 2 are connected by a pivot structure 3, allowing relative rotation between them. This adjusts the angle between the first cylinder 1 and the second cylinder 2, enabling the folding hair dryer 100 to operate in both extended and bent states. In the extended state, the first cylinder 1 and the second cylinder 2 are arranged in a straight line, and the folding hair dryer 100 has a rod-like structure. This allows for easy connection and installation of hair-combing accessories (such as straighteners or curling irons) at the air outlet, ensuring better airflow along the hair's direction and facilitating combing or curling. Furthermore, the rotation center of the pivot structure 3 is offset to the same side of the central axis of the first cylinder 1 and the central axis of the second cylinder 2. In the extended state, the pivot structure 3 does not occupy axial space along the axes of the first cylinder 1 and the second cylinder 2, ensuring a smaller axial dimension of the folding hair dryer 100 in the extended state, making it easier for the user to operate. Furthermore, the first cylinder 1 and the second cylinder 2 can operate at any bending angle, and can be positioned at different angles, making the working states of the folding blower 100 more diverse. When in a bent state, the central axis of the first cylinder 1 and the central axis of the second cylinder 2 are set at an angle, which is either a minor angle (greater than 0° and less than 180°) or a major angle (greater than 180° and less than 360°). The first cylinder 1 and the second cylinder 2 can operate in an "L" or "V" shape to meet the needs of special operating environments. The adjustable range of the first cylinder 1 and the second cylinder 2 is greater, thus better meeting the diverse needs of different users, making it more convenient to use and providing a better user experience.

[0024] The folding hair dryer 100 can be configured as a hair dryer or a curling iron. One of the first cylindrical body 1 and the second cylindrical body 2 can be configured as a blower, and the other as a handle. The first cylindrical body 1 is configured as the blower, and the second cylindrical body 2 as the handle. An air outlet 11 is provided on the first cylindrical body 1. It is understood that an air inlet 21 can be provided on the first cylindrical body 1, and / or the second cylindrical body 2, and / or the pivot structure 3, so that after entering the first cylindrical body 1, the airflow can be blown out from the air outlet 11 for user use.

[0025] It is understood that the folding blower 100 may also include a heating element and a circuit structure 4, which is electrically connected to the heating element to control its operation. The heating element and the circuit structure 4 may both be housed within the same cylinder, or they may be housed separately within the first cylinder 1 and the second cylinder 2.

[0026] Preferably, the heating element is located inside the first cylinder 1, the circuit structure 4 is located inside the second cylinder 2, the air inlet 21 is located on the second cylinder 2, and an air passage is provided on the pivot structure 3, which connects the air inlet 21 and the air outlet 11, thus connecting the first cylinder 1 and the second cylinder 2. Along the airflow direction, the circuit structure 4 is located in the connecting channel between the air inlet 21 and the air passage, allowing cold airflow to enter the second cylinder 2 from the air inlet 21, flow through the circuit structure 4, then through the air passage into the first cylinder 1, and after being heated by the heating structure, flow out of the first cylinder 1 from the air outlet 11. This arrangement allows cold airflow to flow through the circuit structure 4 for heat dissipation, and also allows hot airflow from the periphery of the circuit structure 4 to be drawn into the first cylinder 1, improving heating efficiency and saving heating energy.

[0027] By adjusting the relative angle between the first cylinder 1 and the second cylinder 2, the folding blower 100 can be in different working states to meet different user needs. Preferably, combined with Figure 3 and Figure 4 As shown, the first cylinder 1 and the second cylinder 2 can reciprocate between a bent state and an extended state, such that the central axis of the first cylinder 1 and the central axis of the second cylinder 2 have an angle θ, wherein, preferably, the angle θ is 60º~180º. The angle between the first cylinder 1 and the second cylinder 2 can be adjusted by driving the first cylinder 1 and / or the second cylinder 2 to rotate via a drive mechanism, making the switching of various working states of the folding blower 100 more intelligent; alternatively, the angle between the first cylinder 1 and the second cylinder 2 can be adjusted manually, resulting in a simpler structure and lower cost.

[0028] It is understood that there are many ways in which the first cylinder 1 and the second cylinder 2 can be connected by relative rotation. In one embodiment, the rotation plane of the first cylinder 1 (i.e., the plane through which the central axis of the first cylinder 1 rotates) and the rotation plane of the second cylinder 2 (i.e., the plane through which the central axis of the second cylinder 2 rotates) can be set to be non-coplanar. For example, the rotation plane of the first cylinder 1 and the rotation plane of the second cylinder 2 can be set parallel and / or intersecting, so that the first cylinder 1 and the second cylinder 2 are misaligned in the rotation direction, thereby better realizing large-angle rotation. And / or, one of the first cylinder 1 and the second cylinder 2 can rotate on its own axis, and the angle between the two can be changed by the relative rotation of the first cylinder 1 and the second cylinder 2.

[0029] Preferably, during the relative rotation of the first cylinder 1 and the second cylinder 2, the central axis of the first cylinder 1 and the central axis of the second cylinder 2 are always located on the same plane. The supports between the first cylinder 1 and the second cylinder 2 remain aligned during rotation. Therefore, when the first cylinder 1 is rotated while holding the second cylinder 2, the first cylinder 1 will not tilt to one side, making rotation easier and less strenuous, and providing a better user experience. Furthermore, it does not occupy excessive space along the axis of the pivot structure 3, resulting in a more compact size for the folding blower device 100.

[0030] The first cylinder 1 and the second cylinder 2 are arranged in a folded state with parallel orientation. Here, parallel orientation means that the central axis of the first cylinder 1 and the central axis of the second cylinder 2 are approximately parallel, and the radial projections of the first cylinder 1 and the second cylinder 2 largely overlap. Therefore, when in the folded state, the overall length of the folded blower 100 (i.e., along the axial direction of each cylinder) is shorter, and it occupies less space when stored.

[0031] In one embodiment, the first cylinder 1 and the second cylinder 2 are approximately the same length along their respective axes. When in a folded state, the two ends of the first cylinder 1 and the second cylinder 2 are aligned, thus making them more neat and compact to store.

[0032] In another embodiment, the axial length of the first cylinder 1 is less than the axial length of the second cylinder 2. Since the first cylinder 1 is the air outlet, setting the length of the air outlet to be shorter will result in a shorter flow path for the hot airflow formed after the airflow is heated by the heating component, resulting in less heat loss and thus higher airflow efficiency.

[0033] The shape and size of the first cylinder 1 and the second cylinder 2 are not specifically limited, and can be square, polygonal, or irregular in shape. Preferably, the first cylinder 1 and the second cylinder 2 are both cylindrical and have the same diameter, so that when the first cylinder 1 and the second cylinder 2 are in a bent state and an extended state, the external structure of the folding blower 100 is more symmetrical, more aesthetically pleasing, and more comfortable to hold.

[0034] Furthermore, in the extended state, one end of the first cylinder 1 and the second cylinder 2 are opposite to each other, allowing for better connection between one end of the first cylinder 1 and one end of the second cylinder 2, while keeping the other ends of the first cylinder 1 and the second cylinder 2 far apart. The angle between the central axis of the first cylinder 1 and the central axis of the second cylinder 2 is obtuse and close to a straight angle. The air outlet 11 can be located on the peripheral side wall of the first cylinder 1 or at its end. When the air outlet is also located at the end of the first cylinder 1, the air outlet 11 of the first cylinder 1 can extend further when the user holds the second cylinder 2, thus increasing the operating distance and reducing the effort required for user operation.

[0035] Preferably, combined with Figures 9 to 11 As shown, in the extended state, the first cylinder 1 and the second cylinder 2 are coaxially arranged, and preferably with an included angle θ = 180º. Specifically, the first cylinder 1 has a first connecting end and a first free end facing each other along its axial direction, and the second cylinder 2 has a second connecting end and a second free end facing each other along its axial direction. In the extended state, the first connecting end of the first cylinder 1 and the second connecting end of the second cylinder 2 are connected to each other, the first free end of the first cylinder 1 is oriented in a direction away from the second cylinder 2, and the second free end of the second cylinder 2 is oriented in a direction away from the first cylinder 1. At this time, the first cylinder 1 and the second cylinder 2 are fully extended, the air resistance in the airflow path is smaller, and therefore the air outlet efficiency is higher. It can be understood that in the extended state, the included angle θ is not completely limited, and the included angle θ can approach 180º, such as 180º±5º, so that the first cylinder 1 and the second cylinder 2 are roughly arranged in a straight line.

[0036] Of course, combined Figures 3 to 5 As shown, when the first cylinder 1 and the second cylinder 2 are in a bent state, the clamping angle between the first cylinder 1 and the second cylinder 2 is greater than 0º and less than 180º. For example, the first cylinder 1 and the second cylinder 2 are in a "V" shape or an "L" shape, so that the folding blower 100 can be positioned at a preset angle for use in special environments.

[0037] If the first cylinder 1 and the second cylinder 2 are set to rotate on a horizontal plane, then preferably, the pivot axis of the pivot structure 3 is set in the vertical direction. When in the extended state, the pivot axis of the pivot structure 3 is perpendicular to the central axis of the first cylinder 1 and / or the central axis of the second cylinder 2, so that the first cylinder 1 and the second cylinder 2 rotate more smoothly and are not easy to twist or shake.

[0038] Specifically, when rotating from the extended state to the bent state, the first side of the first cylinder and the first side of the second cylinder move towards each other. In particular, combined with... Figure 11 and Figure 12 As shown, in the extended state, on the orthogonal projection along the axis of the pivot structure 3, the projections of the first cylinder 1 and the second cylinder 2 are both located on the same side of the projection of the plane containing the pivot axis of the pivot structure 3. That is, the first side of the first cylinder 1 and / or the first side of the second cylinder 2 are both located on the plane containing the pivot axis, or both are located on the first side of the plane containing the pivot axis. Specifically, when the diameters of the first cylinder 1 and the second cylinder 2 are equal, in the extended state, the first side of the first cylinder 1 and the first side of the second cylinder 2 are aligned, and the pivot axis is exactly located on the plane containing the first side of the first cylinder 1 and the first side of the second cylinder 2. This allows the first cylinder 1 and the second cylinder 2 to achieve a rotation approaching 180º while rotating in the same plane.

[0039] Alternatively, the pivot axis of the pivot structure 3 is located exactly on the straight line of the first side of the first cylinder 1 and / or the second cylinder 2. In the radial direction along the first cylinder 1 and / or the second cylinder 2, the portion of the pivot structure 3 protruding from the first cylinder 1 and / or the second cylinder 2 is less, thus making the structure more compact in the radial direction and thus smaller in volume.

[0040] The pivot structure 3 is mainly used to rotatably connect the first cylinder 1 and the second cylinder 2. Preferably, the pivot structure 3 is used to keep the first cylinder 1 and the second cylinder 2 rotating in the same plane, so that when in the bent state, the volume of the two cylinders along the axial direction of the pivot structure 3 is smaller, making the entire folding blower 100 more compact. When in the extended state, the first cylinder 1 and the second cylinder 2 can be better kept on the same straight line, resulting in a smoother appearance.

[0041] In one embodiment, combined with Figures 6 to 8 As shown, the pivot structure 3 includes a shaft portion 33, a first rotating portion 31, and a second rotating portion 32. The first rotating portion 31 is rotatably sleeved on the outside of the shaft portion 33 and connected to the first cylinder 1; the second rotating portion 32 is rotatably sleeved on the outside of the shaft portion 33 and connected to the second cylinder 2. The first rotating portion 31 and the second rotating portion 32 can rotate relative to each other, and the central axis of the first cylinder 1 and the central axis of the second cylinder 2 are on the same plane. The shaft portion 33 and the first cylinder 1 are connected by the first rotating portion 31, and the second rotating portion 32 is connected by the second rotating portion 32. Through the transitional action of the first rotating portion 31 and the second rotating portion 32, while the first cylinder 1 and the second cylinder 2 can rotate relative to each other, the central axis of the first cylinder 1 and the central axis of the second cylinder 2 can be better aligned on the same plane, ensuring that the first cylinder 1 and the second cylinder 2 do not shift during rotation.

[0042] In one embodiment, the first rotating part 31 and the second rotating part 32 are nested together. The first rotating part 31 and the second rotating part 32 can both be cylindrical. By nesting the first rotating part 31 and the second rotating part 32, relative rotation can be achieved, and the central axis of the first cylinder 1 and the central axis of the second cylinder 2 can be better ensured to be on the same plane.

[0043] In another embodiment, the first rotating part 31 and the second rotating part 32 are arranged side by side along the axial direction of the shaft part 33. At this time, the connection between the first cylinder 1 and the first rotating part 31 and the connection between the second rotating part 32 and the second cylinder 2 are offset, so that the central axis of the first cylinder 1 and the central axis of the second cylinder 2 are on the same plane.

[0044] Furthermore, combined Figure 8 and Figure 13As shown, the first rotating part 31 includes a first rotating sleeve 311, which is disposed at one end of the first cylinder 1 along its axial direction; the second rotating part 32 includes a second rotating sleeve 321, which is disposed at one end of the second cylinder 2 along its axial direction and is arranged side by side with the first rotating sleeve 311 along the axial direction of the shaft part 33. The first cylinder 1 and the second cylinder 2 are rotatably connected by the first rotating sleeve 311 and the second rotating sleeve 321 respectively being sleeved on the outside of the shaft part 33.

[0045] Preferably, the first rotating sleeve 311 is integrally formed with the first cylinder 1, and the second rotating sleeve 321 is integrally formed with the second cylinder 2, so that fewer assembly parts are required during assembly, thus making assembly simpler.

[0046] Furthermore, such as Figure 8 and Figure 13 As shown, the second cylindrical body 2 includes a first half-shell 22 and a second half-shell 23 connected together. The cross-sections of both the first half-shell 22 and the second half-shell 23 are approximately semi-circular to facilitate the installation of the circuit structure 4 or other components inside the second cylindrical body 2. The second rotating sleeve 321 includes a first sleeve body 3211 and a second sleeve body 3212 connected together. The first sleeve body 3211 is connected to the first half-shell 22, and the second sleeve body 3212 is connected to the second half-shell 23. The first sleeve body 3211 and the second sleeve body 3212 are respectively rotatably fitted onto the two ends of the first rotating sleeve 311 along its axial direction. Specifically, if the first sleeve 3211 is fitted onto the upper end of the first rotating sleeve 311, then the second sleeve 3212 is fitted onto the lower end of the first rotating sleeve 311. The first half-shell 22 is connected to the periphery of the first sleeve 3211 and is located near the bottom of the first half-shell 22. The second half-shell 23 is connected to the periphery of the second sleeve 3212 and is located near the top of the second half-shell 23. This ensures that when the first sleeve 3211 and the second sleeve 3212 are installed in place, the first half-shell 22 and the second half-shell 23 are connected to each other. The assembly operation is simple and convenient.

[0047] Furthermore, the shaft portion 33 connects the first sleeve 3211 and the second sleeve 3212, allowing the first rotating sleeve 311 to be rotatably clamped between the first sleeve 3211 and the second sleeve 3212. The first rotating sleeve 311 is provided with multiple air passage holes 312. The shaft portion 33 connects the first sleeve 3211 and the second sleeve 3212, placing them at opposite ends of the axial direction of the first rotating sleeve 311, allowing the first rotating sleeve 311 to rotate relative to the shaft portion 33. In the extended state, the multiple air passage holes 312 can be blocked, allowing airflow from the second cylinder 2 directly into the first cylinder 1 via the pivot structure 3. In the bent state, at least a portion of the multiple air passage holes 312 are open to the outside, allowing for air intake. This enables a portion of the airflow to directly enter the pivot structure 3 and then into the first cylinder 1 through the multiple air passage holes 312, improving air intake efficiency.

[0048] Specifically, in combination Figures 6 to 8 As shown, the shaft body 33 includes a locking shaft 331, a pressure sleeve 333, and an end cap 332. The locking shaft 331 passes through the second sleeve 3212 and the first sleeve 3211 from bottom to top and is locked to the end cap 332 to connect the first sleeve 3211 and the second sleeve 3212. The pressure sleeve 333 is sleeved on the outside of the locking shaft 331 and presses at least a portion of the first rotating sleeve 311 onto the second sleeve 3212, so that the first rotating sleeve 311 can rotate relative to the second sleeve 3212 and the pressure sleeve 333. The structure is simple and easy to assemble.

[0049] The first cylinder 1 may include a first inner cylinder and a first outer cylinder, as well as an air outlet component located at the front end of the first outer cylinder. The first inner cylinder is integrally formed with the first rotating sleeve 311, and the first outer cylinder is sleeved on the outer periphery of the first inner cylinder. The air outlet component includes an air outlet body and multiple air outlet blades located on the periphery of the air outlet body. The multiple air outlet blades are bent along the same side of the circumference of the air outlet body. The air outlet body is provided with an opening, and an air outlet channel is formed between two adjacent air outlet blades, so that the air volume is larger and the air outlet is more uniform.

[0050] The second cylinder 2 may include a second inner cylinder and a second outer cylinder. The first half-shell 22 and the second half-shell 23 together form the second inner cylinder. The second outer cylinder is sleeved on the outside of the second inner cylinder, so that the second cylinder 2 has better strength and better sealing performance.

[0051] In another embodiment of the folding blower device 100, combined with Figure 14 , Figure 15 and Figure 18As shown, the pivot structure 3 includes a first rotating part 31', a second rotating part 32', and a blocking part 34. The first rotating part 31' is located at the first connecting end of the first cylinder 1. The second rotating part 32' is located at the second connecting end of the second cylinder 2 and is rotatably connected to the first rotating part 31'. The blocking part 34 is rotatably connected to the rotatable connection between the first rotating part 31' and the second rotating part 32'. In the extended state, the first connecting end and the second connecting end at least partially abut against each other, so that the blocking part 34 is completely located inside the first cylinder 1 and the second cylinder 2. When switching from the extended state to the bent state, the first side of the first cylinder 1 and the first side of the second cylinder 2 move closer to each other, while the second side of the first cylinder 1 and the second side of the second cylinder 2 move further apart. This results in the first connecting end and the second connecting end being at least partially spaced apart. The blocking part 34 can block the gap between the first connecting end and the second connecting end, so that at least part of the blocking part 34 is exposed from the first cylinder 1 and the second cylinder 2 when in the bent state, thus ensuring the airtightness of the folding blower 100. Ventilation holes may be provided on the blocking part 34, allowing some airflow to enter through the ventilation holes when in the bent state, thereby increasing the air intake and the air output of the folding blower 100.

[0052] Furthermore, combined Figure 16 and Figure 18 As shown, the first rotating part 31' includes a first rotating sleeve 311' disposed at the first connecting end. The first rotating sleeve 311' protrudes from the axial end of the first cylindrical body 1 and is eccentrically disposed along the radial direction of the first cylindrical body 1. The axial direction of the first rotating sleeve 311' is perpendicular to the rotation plane where the first cylindrical body 1 and the second cylindrical body 2 are located. Preferably, the first rotating sleeve 311' is integrally disposed with the first cylindrical body 1. The second cylindrical body 2 includes a first half-shell 22 and a second half-shell 23 connected to each other. The second rotating part 32' includes a first sleeve 3211' and a second sleeve 3212' connected to each other. The first sleeve 3211' is connected to the first half-shell 22, and the second sleeve 3212' is connected to the second half-shell 23. The first sleeve 3211' and the second sleeve 3212' are respectively rotatably connected to the two ends of the first rotating sleeve 311' along its axial direction for easy assembly. Preferably, the first body 3211' is integrally formed with the first half shell 22, and the second body 3212' is integrally formed with the second half shell 23, so that there are fewer assembly parts and assembly is more convenient.

[0053] Specifically, such as Figure 18As shown, the first rotating sleeve 311' is arranged in a ring shape, and at least a portion of the first rotating sleeve 311' protrudes from the first cylinder 1 in the radial direction, such that the central axis of the first rotating sleeve 311' is located on the first side of the first cylinder 1. Moreover, a partition is provided on the inner ring side of the first rotating sleeve 311', and a rotating column 3111 is provided on the partition. The rotating column 3111 is located at the center of the first rotating sleeve 311', and the first cylinder 1 and the second cylinder 2 are respectively located at the two ends of the axial direction of the rotating column 3111, so as to be rotatably connected to the two ends of the axial direction of the rotating column 3111.

[0054] Specifically, between one axial end of the rotating column 3111 and the first sleeve 3211', one of them is provided with a first rotating cam, and the other is provided with a first rotating hole that rotatably engages with the first rotating cam, with the first rotating cam and the first rotating hole being rotatably connected. Between the other axial end of the rotating column 3111 and the second sleeve 3212', one of them is provided with a second rotating cam, and the other is provided with a second rotating hole that rotatably engages with the second rotating cam, with the second rotating cam and the second rotating hole being rotatably connected.

[0055] The first set 3211' is arranged in a cylindrical shape with openings at both ends. Preferably, it is combined with... Figure 16 and Figure 18 As shown, the folding blower device 100 also includes a panel bracket 7 connected to the first sleeve 3211'. The panel bracket 7 is located on the side of the first sleeve 3211' facing away from the second sleeve 3212', covering the end of the first sleeve 3211'. The panel bracket 7 and the second sleeve 3212' are connected by a connector (such as a screw or bolt). A corresponding arc-shaped hole is provided on the partition of the first rotating sleeve 311'. The connector between the panel bracket 7 and the second sleeve 3212' passes through the arc-shaped hole, so that when the first cylinder 1 and the second cylinder 2 rotate relative to the rotating column 3111, the connector can move along the arc-shaped hole. A first rotating convex shaft protrudes from the panel bracket 7, and a first rotating hole is provided at one end of the rotating column 3111, so that the panel bracket 7 and the first sleeve 3211' are rotatably connected to the rotating column 3111. The outer periphery of the panel bracket 7 is provided with multiple upper hooks, and the inner ring side of the first body 3211' is provided with multiple buckles. The multiple hooks and multiple buckles are connected one by one to fix the panel bracket 7 to the first body 3211'.

[0056] The second cylinder 2 is a cylindrical shape with one end open and the other end closed. The second rotating hole is located at the end of the second sleeve 3212', and the second rotating convex shaft is located at the other end of the rotating column 3111, so that the second sleeve 3212' is rotatably connected to the first rotating sleeve 311'.

[0057] The shielding portion 34 is arc-shaped and has a first connecting portion 341 and a second connecting portion 342 that are spaced apart from each other along the axial direction of its circumferential surface. The first connecting portion 341 and the second connecting portion 342 extend radially from the shielding portion 34 towards the center. The first connecting portion 341 connects one end of the rotating column 3111 along the axial direction and the first sleeve 3211', and the second connecting portion 342 connects the other end of the rotating column 3111 along the axial direction and the second sleeve 3212'. The arc surface of the shielding portion 34 is concentric with the arc surface of the first rotating sleeve 311', so that the shielding portion 34 can better form a shield when bent; and when extended, the shielding portion 34 can be better accommodated in the first cylinder 1 and the second cylinder 2.

[0058] Moreover, combined Figure 14 and Figure 15 As shown, the pivot structure 3 also includes a first limiting part 35 and a second limiting part 36 arranged at intervals along the circumference of the rotating column 3111. When switching from the bent state to the extended state, the first cylinder 1 rotates relative to the blocking part 34 in a first direction, and the second cylinder 2 rotates relative to the blocking part 34 in a second direction. The first and second directions are opposite; if the first direction is clockwise, the second direction is counterclockwise; if the first direction is counterclockwise, the second direction is clockwise. In the extended state, the first limiting part 35 abuts against the first end of the blocking part 34 in the circumferential direction to limit the first cylinder 1 from continuously rotating in the first direction, and the second limiting part 36 abuts against the second end of the blocking part 34 in the circumferential direction to limit the second cylinder 2 from continuously rotating in the second direction, thereby allowing the first cylinder 1 and the second cylinder 2 to be better maintained in the extended state and not to sway arbitrarily.

[0059] Combination Figure 19 and Figure 20 As shown, the pivot structure 3 also includes a third limiting part 37 and a fourth limiting part 38 arranged at intervals along the circumference of the rotating column 3111. When switching from the extended state to the bent state, the first cylinder 1 rotates relative to the blocking part 34 in the second direction, and the second cylinder 2 rotates relative to the blocking part 34 in the first direction. When in the bent state, the third limiting part 37 abuts against at least a portion of the blocking part 34 to limit the first cylinder 1 from continuously rotating in the second direction, and the fourth limiting part 38 abuts against at least a portion of the blocking part 34 to limit the second cylinder 2 from continuously rotating in the first direction, thereby allowing the first cylinder 1 and the second cylinder 2 to be better maintained in the bent state and not to shake arbitrarily, so as to better perform their work in the bent state.

[0060] Moreover, combined Figure 17 and Figure 18As shown, the folding blower 100 also includes a fan assembly 5 and an air guide duct 6. The fan assembly 5 includes a fan bracket 51 and a fan body 52 disposed within the fan bracket 51. The air guide duct 6 is disposed inside the first cylinder 1, and one end is connected to the fan bracket 51. The air guide duct 6 has a first end connected to the fan bracket 51 and a second end disposed near the air outlet end of the first cylinder 1. The central axis of the first end of the air guide duct 6 and the central axis of the second end of the air guide duct 6 are set at an angle to better connect with the fan assembly 5 located within the pivot structure 3. The airflow blown out from the fan assembly 5 can be better directed towards the air outlet end of the folding blower 100 along the air guide duct 6. The portion of the guide duct located within the cylinder is arranged in a straight line, thus the airflow outlet path is shorter, the airflow loss is lower, and the airflow volume can be better guaranteed.

[0061] Moreover, combined Figure 17 and Figure 21 As shown, the fan assembly 5 also includes an air venting sleeve 8, which is fitted onto the air inlet end of the fan bracket 51. The air venting sleeve 8 has a sleeve body fitted onto the outside of the fan bracket 51, multiple air vents located on the inside of the sleeve body, and a limiting protrusion 381 protruding from the outside of the sleeve body. The limiting protrusion 381 extends radially outward from the outer peripheral sidewall of the sleeve body. A limiting rib 343 protrudes from the inside of the shielding portion 34. The limiting protrusion 381 forms the fourth limiting portion 38. When in a bent state, the limiting protrusion 381 and the limiting rib 343 engage to prevent the second cylinder 2 from continuing to rotate in the bending direction, thereby keeping the second cylinder 2 in a bent state for operation.

[0062] The air outlet end of the fan bracket 51 is fixed inside the first cylinder 1 and is fitted against one side wall of the first cylinder 1. The air inlet end of the fan bracket 51 is fixed to the first rotating sleeve 311'. The bend transition between the air inlet end and the air outlet end of the fan bracket 51 forms a first limiting part 35. When in the extended state, one end of the blocking part 34 abuts against the outside of the fan bracket 51, and the other end of the blocking part 34 abuts against the connection transition between the second cylinder 2 and the first rotating sleeve 311', thereby keeping the folding blower 100 in the extended state for operation. The third limiting part 37 includes a first boss 371 protruding from the end of the second sleeve 3212' and a second boss 372 protruding from the panel bracket 7. When in a bent state, one side of the first connecting part 341 and one side of the second connecting part 342 of the blocking part 34 abut against the first boss 371 and the second boss 372 respectively, so as to restrict the first cylinder 1 from continuing to rotate in the bending direction, thereby keeping the first cylinder 1 in a bent working state.

[0063] Furthermore, a sandwich structure is formed between the panel support 7 and the first rotating sleeve 311'. The fan assembly 5 also includes a conductor wire, and a guide post is provided within the sandwich structure. The conductor wire can be wound from the fan body 52 into the sandwich structure and enter the second cylinder 2 through the guide post. The guide post protrudes from the first rotating sleeve 311' and abuts against the panel support 7. The guide post is located on the outer periphery of the fan support 51, and the spacing between the guide post and the fan support 51 forms a groove for the conductor wire to pass through.

[0064] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structure made using the contents of the present utility model specification and drawings, or directly or indirectly applied to other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A folding hair dryer, characterized in that, include: First cylinder and second cylinder; A pivoting structure pivotally connects the first cylinder and the second cylinder, allowing the first cylinder and the second cylinder to rotate relative to each other to have an extended state and a bent state; When in the extended state, the first cylinder and the second cylinder are arranged in a straight line, and the rotation center of the pivot structure is offset on the same side of the central axis of the first cylinder and the central axis of the second cylinder.

2. The folding blower device as described in claim 1, characterized in that, During the relative rotation of the first cylinder and the second cylinder, the central axis of the first cylinder and the central axis of the second cylinder lie on the same plane; and / or, When in the extended state, the first cylinder and the second cylinder are coaxially arranged; and / or, The pivot axis of the pivot structure is perpendicular to the central axis of the first cylinder and / or the central axis of the second cylinder; And / or, When in the extended state, on the orthogonal projection along the axial direction of the pivot structure, the projections of the first cylinder and the second cylinder are both located on the same side of the projection of the plane containing the pivot axis of the pivot structure.

3. The folding blower device as described in claim 1, characterized in that, When rotating from the extended state to the bent state, the first side of the first cylinder and the first side of the second cylinder move toward each other; when in the extended state, the first side of the first cylinder and the first side of the second cylinder are flush. The pivot axis of the pivot structure is located outside the first side of the first cylinder and / or the second cylinder; or, The pivot axis of the pivot structure is located on the straight line of the first side of the first cylinder and / or the second cylinder.

4. The folding blower device as described in claim 1, characterized in that, The first cylindrical body has a first connecting end and a first free end arranged opposite to each other along its axial direction, and the second cylindrical body has a second connecting end and a second free end arranged opposite to each other along its axial direction; the pivoting structure connects the first connecting end and the second connecting end; the pivoting structure includes: The first rotating part is disposed at the first connecting end of the first cylinder; The second rotating part is disposed at the second connecting end of the second cylinder and is rotatably connected to the first rotating part; The shielding part is rotatably connected to the rotatable connection between the first rotating part and the second rotating part; When in the extended state, the shielding portion is located inside the first cylinder and the second cylinder; when in the bent state, at least a portion of the shielding portion is exposed from the first cylinder and the second cylinder.

5. The folding blower as described in claim 4, characterized in that, The first rotating part includes a first rotating sleeve disposed at the first connecting end. The first rotating sleeve protrudes from the shaft end of the first cylinder and is eccentrically disposed along the radial direction of the first cylinder. The second cylindrical body includes a first half-shell and a second half-shell connected together; the second rotating part includes a first sleeve and a second sleeve connected together, the first sleeve being connected to the first half-shell and the second sleeve being connected to the second half-shell, and the first sleeve and the second sleeve being rotatably connected to the two ends of the first rotating sleeve along its axial direction.

6. The folding blower device as described in claim 5, characterized in that, The first rotating sleeve is arranged in a ring shape, and at least a portion of the first rotating sleeve protrudes from the first cylinder in the radial direction of the first cylinder. A rotating column is provided on the inner ring side of the first rotating sleeve. Between one end of the rotating column in the axial direction and the first sleeve, one of them is provided with a first rotating cam, and the other is provided with a first rotating hole that rotates and engages with the first rotating cam. Between the other end of the rotating column in the axial direction and the second sleeve, one of them is provided with a second rotating cam, and the other is provided with a second rotating hole that rotates and engages with the second rotating cam.

7. The folding blower device as described in claim 6, characterized in that, The shielding part is arc-shaped and has a first connecting part and a second connecting part that are relatively spaced apart along the axial direction of its circumferential surface. The first connecting part is connected between one end of the axial direction of the rotating column and the first sleeve, and the second connecting part is connected between the other end of the axial direction of the rotating column and the second sleeve. The arc surface where the shielding part is located is concentrically arranged with the arc surface where the first rotating sleeve is located.

8. The folding blower device as described in claim 6, characterized in that, The pivoting structure further includes a first limiting part and a second limiting part that are spaced apart along the circumference of the rotating column; When switching from the bent state to the extended state, the first cylinder rotates relative to the blocking portion in a first direction, and the second cylinder rotates relative to the blocking portion in a second direction; in the extended state, the first limiting portion abuts against the first circumferential end of the blocking portion to restrict the first cylinder from continuously rotating in the first direction, and the second limiting portion abuts against the second circumferential end of the blocking portion to restrict the second cylinder from continuously rotating in the second direction; and / or, The pivoting structure further includes a third limiting part and a fourth limiting part that are spaced apart along the circumference of the rotating column; When switching from the extended state to the bent state, the first cylinder rotates relative to the blocking portion in a second direction, and the second cylinder rotates relative to the blocking portion in a first direction; when in the bent state, the third limiting portion abuts against at least a portion of the blocking portion to restrict the first cylinder from continuously rotating in the second direction, and the fourth limiting portion abuts against at least a portion of the blocking portion to restrict the second cylinder from continuously rotating in the first direction.

9. The folding blower device as described in claim 5, characterized in that, The folding blower also includes a fan assembly and an air guide tube. The fan assembly includes a fan bracket and a fan body disposed within the fan bracket. The air guide tube is disposed inside the first cylinder and one end is connected to the fan bracket. The air guide tube has a first end connected to the fan bracket and a second end disposed near the air outlet end of the first cylinder. The central axis of the first end of the air guide tube and the central axis of the second end of the air guide tube are arranged at an angle.

10. The folding blower device as described in claim 9, characterized in that, The folding blower also includes a panel bracket connected to the first sleeve body. The panel bracket is located on the side of the first sleeve body facing away from the second sleeve body and forms a sandwich between it and the first rotating sleeve. The fan assembly also includes a conductor wire, and a conductor post is provided in the interlayer. The conductor wire can be wound from the fan body into the interlayer and enter the second cylinder through the conductor post.

Images