Wearable fan

Abstract

A wearable fan (10), comprising a housing assembly (11), a fan (12), a power supply module (13), and a retractable cable module (14). The housing assembly (11) is configured for being worn on a body of a user; the fan (12) is provided on the housing assembly (11), and the housing assembly (11) is provided with an air outlet (11a) for the fan (12) to discharge air; the power supply module (13) is provided on the housing assembly (11) and is configured for supplying power to the fan (12); the retractable cable module (14) is provided on the housing assembly (11) and comprises a cable (141) capable of extending and retracting relative to the housing assembly (11), wherein the cable (141) can be accommodated in the housing assembly (11) and can be pulled out of the housing assembly (11), and is configured for interfacing with an external electronic device, so as to supply power to the external electronic device by means of the power supply module (13).

Description

Wearable fan Technical Field

[0001] This invention relates to the field of fan technology, and in particular to a wearable fan. Background Technology

[0002] Neck fans are worn around the user's neck to provide cooling. These wearable fans are increasingly accepted by users for their relatively good portability and cooling performance, and with advancements in battery technology improving battery life, they are becoming more popular for outdoor activities and travel. However, when using wearable fans outdoors, users typically need to use a power bank to charge their phones or other electronic devices, which can be inconvenient. Summary of the Invention

[0003] Therefore, it is necessary to provide a wearable fan.

[0004] A wearable fan, comprising:

[0005] The shell assembly is designed to be worn on the user's body;

[0006] A fan is disposed on the housing assembly, and the housing assembly has an air outlet for the fan to discharge air.

[0007] A power module, disposed in the housing assembly and used to power the fan; and

[0008] A telescopic cable module is disposed on the housing assembly and includes a cable that is retractable relative to the housing assembly. The cable is retractable within the housing assembly and can be pulled out of the housing assembly for connection to an external electronic device to supply power to the external electronic device via the power module. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

[0010] Figure 1 is a schematic diagram of a wearable fan according to the first embodiment of the present invention;

[0011] Figure 2 is an exploded view of the wearable fan shown in Figure 1;

[0012] Figure 3 is a schematic diagram of one embodiment of the cable in the first embodiment;

[0013] Figure 4 is another exploded view of the wearable fan shown in Figure 1;

[0014] Figure 5 is a schematic diagram of the second shell of the wearable fan in the first embodiment in the second state;

[0015] Figure 6 is an enlarged schematic diagram of point A of the wearable fan shown in Figure 4;

[0016] Figure 7 is a partial cross-sectional view of the circuit board, telescopic cable module and shell assembly of the wearable fan in the first embodiment.

[0017] Figure 8 is a schematic diagram of the telescopic cable module of the wearable fan in the first embodiment;

[0018] Figure 9 is an exploded view of the telescopic line module shown in Figure 8;

[0019] Figure 10 is an exploded view of the telescopic wire module and circuit board shown in Figure 9;

[0020] Figure 11 is a schematic diagram of a wearable fan according to a second embodiment of the present invention;

[0021] Figure 12 is an exploded view of the wearable fan shown in Figure 11;

[0022] Figure 13 is another exploded view of the wearable fan shown in Figure 11;

[0023] Figure 14 is a schematic diagram of one embodiment of the cable in the second embodiment;

[0024] Figure 15 is a schematic diagram of one embodiment of the wearable fan of the second embodiment;

[0025] Figure 16 is an enlarged schematic diagram of point B of the wearable fan shown in Figure 13;

[0026] Figure 17 is a partial cross-sectional view of the circuit board, telescopic cable module and shell assembly of the wearable fan in the second embodiment. Detailed Implementation

[0027] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0028] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] First embodiment:

[0031] Referring to Figures 1 and 2, a first embodiment of this application discloses a wearable fan 10, including a shell assembly 11, a fan 12, a power module 13, and a retractable cable module 14. The shell assembly 11 is worn on a user's body and provides support and restraint for other devices. The fan 12 is disposed on the shell assembly 11, and the shell assembly 11 has an air outlet 11a for the fan 12 to discharge air. In some embodiments, the wearable fan 10 is worn around a user's neck; such a wearable fan 10 may also be called a neckband fan. After the wearable fan 10 is worn around a user's neck, the fan 12 can be activated, driving airflow out from the air outlet 11a to dissipate heat from the area around the user's neck. The location of the air inlet of the shell assembly 11 can have various variations; for example, the air inlet can be located on the side of the shell assembly 11 opposite to the air outlet 11a, or it can be located at the end of the shell assembly 11. This application does not limit this. In particular, in some embodiments, the fan 12 may employ an air compressor, such as a booster turbine, to achieve a bladeless design in the appearance of the wearable fan 10, that is, to achieve the effect of a bladeless fan 12, making the appearance of the wearable fan 10 more concise.

[0032] The power module 13 is located in the housing assembly 11 and is used to power the fan 12. The power module 13 of the wearable fan 10 generally includes a rechargeable battery such as a lithium battery, and with the advancement of battery technology, the capacity of batteries is on the rise, thus steadily improving the battery life of the wearable fan 10.

[0033] The retractable cable module 14 is disposed on the housing assembly 11 and includes a cable 141 that is retractable relative to the housing assembly 11. The cable 141 can be stored in the housing assembly 11 and can be pulled out of the housing assembly 11 to connect to an external electronic device, thereby powering the external electronic device through the power module 13. In some embodiments, the cable 141 can be coiled and stored inside the housing assembly 11 to achieve a hidden cable 141 effect, allowing the wearable fan 10 to maintain a relatively simple appearance and avoiding inconvenience caused by the cable 141 to the user during daily use. When the user needs to power external electronic devices such as mobile phones, the cable 141 of the retractable cable module 14 can be pulled out from the housing assembly 11 and connected to the external electronic device, so that the power module 13 of the wearable fan 10 can power these external electronic devices, such as charging a mobile phone.

[0034] Referring to Figure 3, in some embodiments, the cable 141 may include a cable body 1411, a connector 1413, and a digital display 1415. The digital display 1415 is connected between the free end of the cable body 1411 and the connector 1413, which is used to connect to an external electronic device. The connector 1413 is not limited to a Type-C interface, a Micro-USB interface, a Lightning interface, or a magnetic charging interface. The digital display 1415 may include a display panel, such as an LCD panel or an OLED panel, to display information such as current and voltage during the operation of the cable 141, improving ease of use. Of course, the digital display 1415 is not mandatory; for example, in the embodiments shown in Figures 1 and 2, the cable 141 does not have a digital display 1415.

[0035] The wearable fan 10 described above includes a housing assembly 11, a fan 12, a power module 13, and a retractable cable module 14. The housing is worn on the user's body. The fan 12 is located on the housing assembly 11, and the housing assembly 11 has an air outlet 11a for the fan 12 to discharge air. The power module 13 is located on the housing assembly 11 and is used to power the fan 12. The retractable cable module 14 is located on the housing assembly 11 and includes a cable 141 that can extend and retract relative to the housing assembly 11. The cable 141 can be stored in the housing assembly 11 and can be pulled out of the housing assembly 11 to connect to an external electronic device, so that the external electronic device can be powered by the power module 13. By utilizing the large-capacity battery of the wearable fan 10 in combination with the retractable cable module 14, the power module 13 of the wearable fan 10 can be used to power external electronic devices, improving the convenience of use. For example, when a user carries the wearable fan 10 and needs to charge it, the cable 141 of the retractable cable module 14 can be pulled out from the shell assembly 11 of the wearable fan 10 and connected to an external electronic device such as a mobile phone. The power module 13 of the wearable fan 10 then powers and charges the external electronic device, eliminating the need to carry a separate power bank and charging cable, thus improving convenience. When the external electronic device does not have a rechargeable battery, the user can also use the power module 13 of the wearable fan 10 to power it. When the user no longer needs to power the external electronic device through the wearable fan 10, the cable 141 of the retractable cable module 14 can be stored inside the shell assembly 11, allowing the wearable fan 10 to maintain a relatively simple appearance, making it easy for the user to carry and improving usability.

[0036] Referring to Figure 4, the shell assembly 11 is generally C-shaped and may include a first shell 111 for wearing around a user's neck, and a second shell 113 connected to the end of the first shell 111. At least one of the first shell 111 and the second shell 113 has an air outlet 11a, that is, the air outlet 11a may be located in the first shell 111 or the second shell 113, or both the first shell 111 and the second shell 113 may have an air outlet 11a. At least one of the first shell 111 and the second shell 113 is equipped with a fan 12. For example, the fan 12 may be located in the first shell 111 or the second shell 113, or both the first shell 111 and the second shell 113 may have a fan 12. The air inlet, the air outlet 11a, and the air duct connecting the air inlet and the air outlet 11a can be adapted to the shape. At least one of the first shell 111 and the second shell 113 is provided with a power module 13. That is, the power module 13 can be provided in the first shell 111 or the second shell 113, or the first shell 111 and the second shell 113 are each provided with a power module 13, so as to improve the battery life of the wearable fan 10. A retractable cable module 14 is provided in at least one of the first shell 111 and the second shell 113. For example, the first shell 111 is provided with a retractable cable module 14, or the second shell 113 is provided with a retractable cable module 14, or the first shell 111 and the second shell 113 are each provided with a retractable cable module 14.

[0037] In some embodiments, the first shell 111 and the second shell 113 are fixedly connected, for example, by injection molding, to improve the efficiency of shell assembly 11 processing and reduce the cost of shell assembly 11. In other embodiments, shell assembly 11 can be formed by joining two half-shells together, and such wearable fans 10 have a relatively simple structure and lower processing costs.

[0038] Referring to Figure 5, in other embodiments, the first shell 111 and the second shell 113 are movably connected, and the second shell 113 has a first state and a second state relative to the first shell 111. The first shell 111 is provided with a first air outlet 11a1 extending circumferentially along the user's neck, and the second shell 113 is provided with a fan 12 and a second air outlet 11a2. That is, the air outlet 11a of the shell assembly 11 may include the first air outlet 11a1 and the second air outlet 11a2. In the first state, the first air outlet 11a1 is connected to and communicates with the second air outlet 11a2, that is, air can be delivered to the side and back of the user's neck through the first air outlet 11a1, as shown in Figure 1; in the second state, the first air outlet 11a1 is offset from the second air outlet 11a2 to adjust the orientation of the second air outlet 11a2, as shown in Figure 5. Referring to Figure 5, in the second state, the first air outlet 11a1 may not deliver air or may deliver only a small amount of air. The fan 12 located in the second shell 113 can deliver air to the user's chest area, chin, or face through the second air outlet 11a2, thereby improving the heat dissipation effect, expanding the usage scenarios, and enhancing the user experience.

[0039] For example, in this embodiment, one of the second shell 113 and the first shell 111 may be provided with an arc-shaped groove or an irregular groove 113a, and the other of the second shell 113 and the first shell 111 has a support rod 111a. The arc-shaped groove or the irregular groove 113a can guide and limit the movement of the support rod 111a. When the support rod 111a moves along the arc-shaped groove or the irregular groove 113a, the angle between the second shell 113 and the first shell 111 can be gradually changed, thereby realizing the deviation of the second air outlet 11a2 from the first air outlet 11a1 and changing the orientation of the second air outlet 11a2.

[0040] Furthermore, in this embodiment, two ends of the first shell 111 can be connected to second shells 113 respectively, and both second shells 113 are provided with a fan 12 and a second air outlet 11a2. The second shells 113 at both ends of the first shell 111 can move relative to the first shell 111 to adjust the orientation of the second air outlet 11a2. Since the second shells 113 at both ends of the first shell 111 can move independently, more usage scenarios can be expanded. For example, one of the second shells 113 is in a first state, and the fan 12 inside the second shell 113 can deliver air to the user's side and back of the neck through the first air outlet 11a1; the other second shell 113 is in a second state, and the second shell 113 can deliver air to the user's chest area or chin and face through the second air outlet 11a2, thereby expanding the air delivery area and improving the user experience.

[0041] Referring again to Figure 4, the wearable fan 10 includes a circuit board 15 housed within the housing assembly 11, and a retractable cable module 14 includes a cover 142 housed within the housing assembly 11. The fan 12 and power module 13 are electrically connected to the circuit board 15. The cover 142 is relatively fixed in position to the circuit board 15, and the cable 141 is retractably housed within the cover 142. The circuit board 15 can integrate the control circuitry and power management unit of the wearable fan 10. The power module 13, fan 12, and cable 141 are electrically connected to the circuit board 15. The start / stop button and speed adjustment knob of the fan 12 can be correspondingly configured with the control circuitry on the circuit board 15 to achieve the corresponding functions, which will not be elaborated further. The cover 142 can be fixedly connected to the circuit board 15 or to the housing assembly 11, such as the first housing 111, thereby achieving relative fixation between the cover 142 and the circuit board 15. The telescopic cable module 14, including the housing 142, can be made into an independent module and assembled into the wearable fan 10, thereby improving assembly efficiency and ensuring the reliability of the telescopic cable module 14.

[0042] Specifically, referring to Figure 6, the telescopic cable module 14 may include a circuit board 143, a torsion spring 144, and a turntable 145 disposed within a housing 142. The circuit board 143 is fixedly positioned relative to the housing 142, for example, it is fixedly connected to the housing 142 or the first housing 111 of the housing assembly 11. The circuit board 143 is electrically connected to the circuit board 15, for example, through wire bonding. The torsion spring 144 may be helical and has a first free end 1441 and a second free end 1443. The first free end 1441 of the torsion spring 144 is connected to the turntable 145, and the second free end 1443 is fixedly positioned relative to the circuit board 143, for example, it is fixedly connected to the housing 142 or the circuit board 143. The turntable 145 is rotatably connected to the housing 142, for example, one of the turntable 145 and the housing 142 has a rotating shaft, and the other has a shaft hole, thereby realizing the rotatable connection between the turntable 145 and the housing 142. Cable 141 is wound around the outer periphery of torsion spring 144. One of the circuit board 143 and turntable 145 has a contact pin, and the other has a ring conductor. The contact pin makes contact with the ring conductor, thus establishing electrical connection between cable 141 and the contact pin or ring conductor on turntable 145, thereby achieving electrical connection between cable 141 and circuit board 143. For example, circuit board 143 has a contact pin, turntable 145 has a ring conductor, and cable 141 is electrically connected to the ring conductor; or circuit board 143 has a ring conductor, turntable 145 has a contact pin, and cable 141 is electrically connected to the contact pin, achieving electrical connection between cable 141 and circuit board 143. Of course, cable 141 can also be directly electrically connected to circuit board 143 through wire bonding or other methods.

[0043] Cable 141 can be held in place by turntable 145. When the user pulls cable 141, it causes turntable 145 to rotate relative to housing 142 in one direction, such as clockwise, to gradually extend beyond housing 142. During this process, the contact pin remains in contact with the annular conductor, thereby ensuring the electrical connection between cable 141 and circuit board 15. During this process, torsion spring 144 accumulates elastic potential energy, causing turntable 145 to tend to rotate counterclockwise. When the user no longer needs to power external electronic devices through wearable fan 10, torsion spring 144 can release elastic potential energy, causing cable 141 extending beyond housing 142 to gradually retract into housing 142.

[0044] Referring to Figure 6, in some embodiments, the telescopic cable module 14 includes a limiting member 146 rotatably connected to the housing 142. The turntable 145 has a stop position 1451 and an unlock position 1453. During the process of the cable 141 being pulled out of the housing 142, when the cable 141 drives the turntable 145 to rotate to the stop position 1451 corresponding to the limiting member 146, the limiting member 146 restricts the rotation of the turntable 145. When the cable 141 continues to be pulled out of the housing 142 and drives the turntable 145 to rotate, the limiting member 146 rotates relative to the housing 142 and moves to the unlock position 1453, so that the cable 141 can be gradually wound into the housing 142. Figure 6 shows that the turntable 145 is provided with corresponding limiting grooves 145a and guide grooves 145b. The groove wall of the limiting groove 145a can be used as the stop position 1451, and the connection between the groove wall of the guide groove 145b and the groove wall of the limiting groove 145a is the unlock position 1453.

[0045] The sidewall of the guide groove 145b can guide and limit the movement of the end of the limiting member 146, so that during the pulling out of the cable 141, the end of the limiting member 146 continues to move along the guide groove 145b. When the user stops pulling the cable 141 out, the torsion spring 144 drives the turntable 145 to rotate in the opposite direction (e.g., clockwise), and the end of the limiting member 146 is guided by the sidewall of the guide groove 145b into the limiting groove 145a, thereby stopping the cable 141. When the user continues to pull the cable 141 out, the turntable 145 continues to rotate in the original direction (e.g., counterclockwise), and the end of the limiting member 146 exits the limiting groove 145a and enters the guide groove 145b, allowing the cable 141 to continue to be pulled out. It is understood that the above functions can be achieved by designing the depth and width of the guide groove 145b and the limiting groove 145a, which will not be elaborated further in this application.

[0046] When the user pulls the cable 141 out of the housing 142 and drives the turntable 145 to rotate, the end of the limiting member 146 moves along the guide groove 145b to the stop position 1451. At this time, if the user stops pulling the cable 141, under the action of the torsion spring 144, the end of the limiting member 146 abuts against the groove wall of the limiting groove 145a, and the turntable 145 stops rotating, thus achieving the stopping effect of the cable 141. When the user continues to pull the cable 141 out of the housing 142 and drives the turntable 145 to rotate, the limiting member 146 rotates relative to the housing 142 and retracts to the guide groove 145b. It can switch to the guide groove 145b and continue to move along the guide groove 145b, that is, reach the unlock position 1453. The turntable 145 can continue to rotate and make the cable 141 continuously extend out of the housing 142, or the cable 141 can gradually be wound back into the housing 142. The combination of the limit switch 146 and the turntable 145 enables the cable 141 to stop and automatically rewind, improving ease of use. Furthermore, the turntable 145 can be configured with two or more stopping positions 1451 and unlocking positions 1453, with each stopping position 1451 corresponding to the unlocking position 1453.

[0047] Of course, in other embodiments, other structures can be used to replace the locking effect of the limiting member 146 on the cable 141. For example, the wearable fan 10 may include a limiting member 146 that is movably fitted to the housing assembly 11 (first housing 111 or second housing 113). The limiting member 146 has a first position and a second position. In the first position, the cable 141 can be pulled out or retracted into the housing assembly 11. In the second position, the limiting member 146 abuts against the cable 141 and restricts the movement of the cable 141 relative to the housing assembly 11.

[0048] For example, the limiting member 146 slides with the shell assembly 11, and the sliding of the limiting member 146 with the shell assembly 11 has appropriate damping to prevent the limiting member 146 from easily retracting. When the user needs to stop the cable 141 while pulling it out, the limiting member 146 is pushed relative to the shell assembly 11 to the position that abuts the cable 141, i.e., the second position, so that the cable 141 can be stopped in the shell assembly 11; when the user needs to retract the cable 141 into the shell assembly 11, the limiting member 146 is pushed in the opposite direction to the first position. After the limiting member 146 no longer abuts the cable 141, the cable 141 can be retracted into the cover 142 under the action of the torsion spring 144 and the turntable 145.

[0049] For example, the limiting member 146 is rotatably engaged with the housing assembly 11. The limiting member 146 may have an eccentric wheel structure and appropriate rotational damping to prevent the limiting member 146 from easily retracting. When the user needs to stop the cable 141 while pulling it out, the limiting member 146 is rotated so that the eccentric wheel of the limiting member 146 presses against the cable 141, i.e., reaching the second position, thus stopping the cable 141 in the housing assembly 11. When the user needs to retract the cable 141 into the housing assembly 11, the limiting member 146 is rotated in the opposite direction to the first position. After the eccentric wheel of the limiting member 146 no longer presses against the cable 141, the cable 141 can be retracted into the cover 142 under the action of the torsion spring 144 and the turntable 145.

[0050] Both of the above-described limiting member 146 structures can stop the cable 141, and combined with the torsion spring 144, they can achieve an automatic winding effect, improving ease of use. In other embodiments, the limiting member 146 can also adopt other structural forms to achieve the effect of stopping the cable 141.

[0051] It is understandable that the housing 142 of the retractable cable module 14 is not necessary and can be omitted to simplify the structure of the wearable fan 10 and improve its compactness. For example, the retractable cable module 14 includes a torsion spring 144 and a turntable 145. The first free end 1441 of the torsion spring 144 is connected to the turntable 145, and the second free end 1443 of the torsion spring 144 is fixed relative to the position of the circuit board 15. The cable 141 is wound around the outer periphery of the torsion spring 144 and is directly electrically connected to the circuit board 15, for example, by soldering or combining lead soldering, or the electrical connection between the cable 141 and the circuit board 15 is achieved through a contact pin and a ring conductor.

[0052] Referring to Figure 7, the turntable 145 is provided with a first conductive element 148. The cable 141 is electrically connected to the first conductive element 148, for example, the end of the cable 141 is directly soldered to the first conductive element 148. The circuit board 15 is provided with a second conductive element 151. The second conductive element 151 is slidably in contact with the first conductive element 148 and conducts electricity to connect the cable 141 to the circuit board 15. One of the first conductive element 148 and the second conductive element 151 is a contact pin, and the other is a ring conductor. Taking the first conductive element 148 as a contact pin and the second conductive element 151 as a ring conductor as an example, the telescopic cable module 14 includes a contact pin. The contact pin is provided on the turntable 145 and is directly electrically connected to the cable 141, for example, the end of the cable 141 is directly soldered to the contact pin to eliminate intermediate circuit components. The circuit board 15 is provided with a ring conductor. The ring conductor and the contact pin can each have multiple ring conductors and make contact and conduct electricity in a one-to-one correspondence. The contact pin can be a pogo pin to achieve elastic contact between the contact pin and the ring conductor, that is, to achieve elastic contact between the second conductive element 151 and the first conductive element 148, ensuring the reliability of the electrical contact between the two. The cable 141 can be held in place by the turntable 145, and when the user pulls the cable 141, it drives the turntable 145 to rotate relative to the housing assembly 11 in one direction, such as clockwise, so that it gradually extends out of the housing assembly 11. During the rotation of the turntable 145, the contact pin slides relative to the ring conductor and maintains contact, so that the cable 141 maintains an electrical connection with the circuit board 15. During this process, the torsion spring 144 accumulates elastic potential energy, so that the turntable 145 tends to rotate counterclockwise. When the user no longer needs to power the external electronic device through the wearable fan 10, the torsion spring 144 releases its elastic potential energy, causing the cable 141 extending out of the housing assembly 11 to gradually retract into the housing assembly 11.

[0053] In this embodiment, the circuit board 15 or the housing assembly 11 may be provided with a protruding rotating shaft, and the turntable 145 is sleeved on the rotating shaft to realize the rotational connection between the turntable 145 and the circuit board 15 or the housing assembly 11.

[0054] Specifically, referring to FIG7, in some embodiments, the housing assembly 11 forms a mounting groove 11c for limiting the cable 141 and the torsion spring 144. For example, the mounting groove 11c can be directly formed during the injection molding process of the first housing 111. The torsion spring 144 and the cable 141 are wound around the mounting groove 11c. The first free end 1441 of the torsion spring 144 is connected to the turntable 145. The second free end 1443 of the torsion spring 144 is fixed relative to the position of the circuit board 15, for example, fixedly connected to the circuit board 15 or the housing assembly 11. The cable 141 is wound around the outer periphery of the torsion spring 144 and can be engaged with the turntable 145. A turntable 145 equipped with a stylus is positioned in the mounting slot 11c and rotatably connected to the housing assembly 11 or circuit board 15 via a pivot. The stylus is directly electrically connected to the cable 141, eliminating the need for intermediate circuit components. The circuit board 15 covers the mounting slot 11c and is fixed to the housing assembly 11. The circuit board 15 and the housing assembly 11 together form a storage space 11d for limiting the cable 141, torsion spring 144, and turntable 145. The stylus is positioned and makes contact with the annular conductor on the circuit board 15, ensuring that the stylus remains in contact with the annular conductor during the rotation of the turntable 145 relative to the housing assembly 11, thus guaranteeing the electrical connection between the cable 141 and the circuit board 15. By eliminating the housing 142 and the circuit board 143 within it, the internal structure of the wearable fan 10 is made more compact, enabling a miniaturized design of the wearable fan 10.

[0055] Referring to Figures 8, 9, and 10, in some embodiments, the housing 142 may have a through hole 142a corresponding to the turntable 145. The turntable 145 is rotatably mounted on the housing 142. The first free end 1441 of the torsion spring 144 is connected to the turntable 145, for example, engaged with the turntable 145. The second free end 1443 of the torsion spring 144 is fixed relative to the position of the housing 142, for example, engaged with the housing 142. The cable 141 is wound around the outer periphery of the torsion spring 144. The stylus is exposed outside the housing 142 through the through hole 142a and abuts against the annular conductor on the circuit board 15 to ensure electrical connection between the cable 141 and the circuit board 15 during the rotation of the turntable 145. The telescopic cable module 14 can still be made into a modular component, which is convenient for assembly into the housing assembly 11 and electrical connection with the circuit board 15, improving the assembly efficiency of the wearable fan 10.

[0056] Specifically, in some embodiments, the housing 142 includes a bottom cover 1421 and a top cover 1423, which together form an accommodating space for housing the torsion spring 144 and the cable 141. The bottom cover 1421 has a through hole 142a, and the turntable 145 is rotatably connected to the top cover 1423. For example, one of the turntable 145 and the top cover 1423 may be provided with a rotating shaft, and the other with a shaft hole, thereby realizing the rotatable connection between the turntable 145 and the top cover 1423. The end of the rotating shaft may be configured as a compressible structure, with its width in the normal state being greater than the width of the shaft hole, so that it can be compressed into the shaft hole and prevent the turntable 145 from falling out of the housing 142 after the deformation recovers. The diameter of the through hole 142a can be slightly larger than the diameter of the turntable 145, or in other words, the through hole 142a and the turntable 145 can be fitted with a clearance to prevent dust, droplets, or other foreign objects from easily entering the housing 142 through the through hole 142a, thus ensuring the operational reliability of the telescopic cable module 14. This structure can also limit the turntable 145 during rotation by using the wall of the through hole 142a, preventing the turntable 145 from tilting at too large an angle, which could lead to poor contact between the contact pin and the annular conductor.

[0057] The thickness of the portion of the bottom cover 1421 defining the through hole 142a is no greater than the thickness of the turntable 145; that is, the thickness of the portion of the bottom cover 1421 at the edge of the through hole 142a is no greater than the thickness of the turntable 145. This reduces the contact area between the hole wall of the through hole 142a and the circumferential surface of the turntable 145 during rotation, thereby reducing potential frictional resistance. The relatively thin bottom cover 1421 also allows for a more compact structure of the telescopic cable module 14 along the rotation axis, while the relatively thicker turntable 145 provides better structural stability and can enhance rotational stability through the inertia of the turntable 145. Since the circuit board 143 inside the housing 142 is eliminated, and at least one of the turntable 145 and the contact pin passes through the through hole 142a, and the annular conductor is set on the circuit board 15, the overall thickness of the telescopic cable module 14 can also be reduced compared to the solution of setting the circuit board 143 inside the housing 142, resulting in a more compact structure. This improves the compactness of the internal structure of the wearable fan 10 and realizes the miniaturization design of the wearable fan 10.

[0058] Understandably, the contact pin can be located on the circuit board 15, and the ring conductor can be located on the turntable 145. During the rotation of the turntable 145, this structure can also maintain the electrical connection between the cable 141 and the circuit board 15.

[0059] In the above embodiments, when the housing 142 is omitted, the telescopic cable module 14 may also include a limiting member 146 movably connected to the housing assembly 11. The turntable 145 has a stop position 1451 and an unlock position 1453. During the process of the cable 141 being pulled out of the housing assembly 11, when the cable 141 drives the turntable 145 to rotate to the stop position 1451 corresponding to the limiting member 146, the limiting member 146 restricts the rotation of the turntable 145. When the cable 141 continues to be pulled out of the housing assembly 11 and drives the turntable 145 to rotate, the limiting member 146 moves relative to the turntable 145 to the unlock position 1453, so that the cable 141 is gradually wound into the housing assembly 11. The stopping principle and structure of the limiting member 146 for the cable 141, as well as the unlocking principle and structure, can be referred to the foregoing content and will not be repeated here. The combination of the limiter 146 and the turntable 145 can stop the cable 141, and the torsion spring 144 can achieve automatic winding, improving the convenience of use.

[0060] Of course, in this embodiment, the wearable fan 10 may also include a limiting member 146 that is movably fitted to the shell assembly 11. The limiting member 146 has a first position and a second position. In the first position, the cable 141 can be pulled out or retracted into the shell assembly 11; in the second position, the limiting member 146 abuts against the cable 141 and restricts the movement of the cable 141 relative to the shell assembly 11. The principle and structure of the limiting member 146 in stopping the cable 141, as well as the principle and structure of unlocking, can be referred to the foregoing content and will not be repeated here. The structure of the limiting member 146 can achieve the stopping of the cable 141, and combined with the torsion spring 144, it can achieve an automatic winding effect, improving the convenience of use. In other embodiments, the limiting member 146 may also adopt other structural forms to achieve the stopping effect of the cable 141.

[0061] When the housing 142 adopts a through hole 142a to expose the first conductive element 148, the telescopic cable module 14 also includes a limiting member 146 rotatably connected to the housing 142, or the wearable fan 10 includes a limiting member 146 that is movably fitted to the shell assembly 11 or the circuit board 15 to stop or unlock the cable 141, which will not be described in detail here.

[0062] Second embodiment:

[0063] Referring to Figures 11, 12, and 13, in a second embodiment of this application, another wearable fan 20 is provided. The wearable fan 20 also includes a housing assembly 21, a fan 22, a power module 23, and a retractable cable module 24. The housing assembly 21 is worn on the user's body and provides support and restraint for other devices. The fan 22 is disposed on the housing assembly 21, and the housing assembly 21 has an air outlet 21a for the fan 22 to discharge air. In some embodiments, the wearable fan 20 can be worn on the user's collar or other locations. After the wearable fan 20 is worn on the user's body, the fan 22 can be activated, driving airflow out from the air outlet 21a to dissipate heat for the user. The location of the air inlet of the housing assembly 21 can have various variations; for example, the air inlet can be located on the side of the housing assembly 21 opposite to the air outlet 21a, or it can be located on the periphery of the housing assembly 21. This application does not limit this. In particular, in some embodiments, the fan 22 may be an air compressor such as a turbocharger, to achieve a bladeless design in the appearance of the wearable fan 20, that is, to achieve the effect of a bladeless fan 22, making the appearance of the wearable fan 20 more concise.

[0064] The power module 23 is located in the housing assembly 21 and is used to power the fan 22. The power module 23 of the wearable fan 20 generally includes a rechargeable battery such as a lithium battery, and with the advancement of battery technology, the capacity of batteries is on the rise, thus steadily improving the battery life of the wearable fan 20.

[0065] The retractable cable module 24 is disposed on the housing assembly 21 and includes a cable 241 that is retractable relative to the housing assembly 21. The cable 241 can be stored in the housing assembly 21 and can be pulled out of the housing assembly 21 to connect to an external electronic device, thereby powering the external electronic device through the power module 23. In some embodiments, the cable 241 can be coiled and stored inside the housing assembly 21 to achieve a hidden cable 241 effect, allowing the wearable fan 20 to maintain a relatively simple appearance and avoiding inconvenience caused by the cable 241 to the user during daily use. When the user needs to power an external electronic device such as a mobile phone, the cable 241 of the retractable cable module 24 can be pulled out from the housing assembly 21 and connected to the external electronic device, so that the power module 23 of the wearable fan 20 can power these external electronic devices, such as charging a mobile phone.

[0066] Referring to Figure 14, in the second embodiment, the cable 241 may also include a cable body 2411, a connector 2413, and a digital display 2415. The digital display 2415 is connected between the free end of the cable body 2411 and the connector 2413, and the connector 2413 is used to connect to an external electronic device. The connector 2413 is not limited to a Type-C interface, or a Micro-USB interface, or a Lightning interface, or a magnetic charging interface, etc. The digital display 2415 may include a display panel, such as an LCD panel or an OLED panel, to display information such as current and voltage during the operation of the cable 241, improving ease of use. Of course, the digital display 2415 is not necessary and can be omitted, so it will not be described further.

[0067] When a user carries the wearable fan 20 and needs to charge it, the cable 241 of the retractable cable module 24 can be pulled out from the shell assembly 21 of the wearable fan 20 and connected to an external electronic device such as a mobile phone. The power module 23 of the wearable fan 20 then powers and charges the external electronic device, eliminating the need to carry a separate power bank and charging cable, thus improving convenience. Even when the external electronic device does not have a rechargeable battery, the user can still power it using the power module 23 of the wearable fan 20. When the user no longer needs to power the external electronic device through the wearable fan 20, the cable 241 of the retractable cable module 24 can be stored inside the shell assembly 21, maintaining a clean and simple appearance for easy carrying and continued ease of use.

[0068] The difference from the first embodiment is that the shell assembly 21 may include a shell 211 and a wearable component 213 connected to the shell 211. The shell 211 has an air outlet 21a, and a fan 22, a power module 23, and a telescopic cable module 24 are respectively disposed on the shell 211. The wearable component 213 may be integrally formed with the shell 211, for example, by injection molding, which improves the processing efficiency of the shell assembly 21 and reduces the cost of the shell assembly 21. The wearable component 213 may also be assembled and fixed to the shell 211. For example, it may be fixed to the shell assembly 21 by fasteners such as screws, by adhesive, or by fasteners such as clips. The material of the wearable component 213 may be the same as that of the shell 211, for example, both may be plastic. Of course, the material of the wearable component 213 may be different from that of the shell 211. For example, the shell 211 may be made of plastic, while the wearable component 213 may be made of metal such as stainless steel or manganese steel, which improves the fatigue resistance and texture of the wearable component 213.

[0069] Referring to Figure 12, the wearable component 213 may include an integrally formed fixing portion 2131, a deformable portion 2133, and an abutment portion 2135. The fixing portion 2131 is fixedly connected to the outer shell 211, for example, by injection molding or bonding. The deformable portion 2133 has an arc-shaped cross-section, with one end connected to the fixing portion 2131 and the opposite end connected to the abutment portion 2135. The abutment portion 2135 is inclined towards the outer shell 211 from the end of the deformable portion 2133 away from the fixing portion 2131. Taking the example of a user wearing the wearable fan 20 on their collar, the abutment portion 2135 can be inserted between the user's collar and body. The collar pushes the end of the abutment portion 2135 away from the deformable portion 2133 away from the outer shell 211, providing space for the collar to enter. During this process, the deformable portion 2133 undergoes elastic deformation. The collar continues to be inserted between the abutment portion 2135 and the outer shell 211 until it abuts the deformable portion 2133. The end of the abutment portion 2135 away from the deformable portion 2133 can press against the outer shell 211 or press against the outer shell 211 through the collar or clothing, restricting the collar between the wearer 213 and the outer shell 211, thereby reliably wearing the wearable fan 20 on the body.

[0070] In other embodiments, the wearable component 213 can be rotatably connected to the outer casing 211, for example, by means of screws, bolts, or other pivot structures. For example, the fixing part 2131 of the wearable component 213 is rotatably connected to the outer casing 211, and the relative rotation between the two has suitable damping. When the user hangs the wearable fan 20 on a collar or other position using the wearable component 213, the outer casing 211 can be driven to rotate relative to the wearable component 213 to adjust the orientation of the air outlet 21a, thereby improving ease of use.

[0071] The outer casing 211 may have a locking structure (not shown) and an opening for the extension and retraction of the cable 241. The locking structure is used to engage with one end of the cable 241 extending out of the outer casing 211 to form a ring structure for hanging on the human body, as shown in Figure 15. For example, the outer casing 211 may have a slot (not shown) and a locking plate (not shown) that slides with the outer casing 211. After the user pulls out the cable 241 stored in the outer casing 211, the free end of the cable 241 can be inserted into the slot, and then the locking plate can be pushed to cover the slot, locking the cable 241 into the outer casing 211. The cable 241 thus forms a ring structure for hanging on the human body. The user can hang the wearable fan 20 around their neck through the ring structure, or put their hand through the ring structure, allowing them to blow air towards their face or other directions, improving the convenience of using the wearable fan 20 and expanding its application scenarios. After the user retracts the latch, the free end of the cable 241 can be unlocked from the housing 211 and then normally wound back into the housing 211. The latching structure can also take other forms, such as the housing 211 being equipped with an openable and closable buckle. After the buckle is opened, the free end of the cable 241 can be inserted. After the buckle is closed, the free end of the cable 241 can also be locked in the housing 211, thereby forming a loop structure for suspension to the human body.

[0072] Referring again to Figures 12 and 13, in some embodiments, the wearable component 213 is fixedly connected to the outer shell 211. The outer shell 211 may include a first shell 2111 connected to a second shell 2113, and the first shell 2111 and the second shell 2113 may each be oblate spheroidal. The fan 22 is mounted on the first shell 2111, and the first shell 2111 has an air outlet 21a. The power module 23 and the telescopic cable module 24 are disposed on the second shell 2113. The first shell 2111 can rotate relative to the second shell 2113 to adjust the orientation of the air outlet 21a. For example, the relative rotation between the first shell 2111 and the second shell 2113 has suitable damping. When the user hangs the wearable fan 20 on a collar or other position using the wearable component 213, the first shell 2111 can be driven to rotate relative to the second shell 2113 to adjust the orientation of the air outlet 21a, improving ease of use.

[0073] Furthermore, the rotation axis of the fan 22 can be parallel to the rotation axis of the second shell 2113 relative to the first shell 2111. The fan 22 can be a radial fan 22, venting air from the side of the first shell 2111. This allows for a smaller overall thickness of the wearable fan 20, improving structural compactness and portability.

[0074] Similar to the first embodiment, the wearable fan 20 may also include a circuit board 25 disposed within the second housing 2113, and a retractable cable module 24 including a cover 242 disposed within the outer housing 211. The fan 22 and the power module 23 are electrically connected to the circuit board 25, respectively. The cover 242 and the circuit board 25 are relatively fixed in position, and the cable 241 is retractably disposed within the cover 242. The circuit board 25 may integrate the control circuit, power management unit, etc. of the wearable fan 20. The power module 23, the fan 22, and the cable 241 are electrically connected to the circuit board 25, respectively. The start / stop button, speed adjustment knob, and other devices of the fan 22 can be correspondingly set with the control circuit on the circuit board 25 to realize the corresponding functions, which will not be described in detail here.

[0075] The cover 242 can be fixedly connected to the circuit board 25 or to the second shell 2113, thereby achieving relative fixation between the cover 242 and the circuit board 25. The telescopic cable module 24, including the cover 242, can be made into an independent module and assembled into the wearable fan 20, thereby improving assembly efficiency and ensuring the reliability of the telescopic cable module 24.

[0076] Specifically, the telescopic cable module 24 may include a circuit board 243, a torsion spring 244, and a turntable 245 disposed within a housing 242. The circuit board 243 is fixedly positioned relative to the housing 242, for example, it is fixedly connected to the housing 242 or the second housing 2113 of the housing assembly 21. The circuit board 243 is electrically connected to the circuit board 25, for example, through wire bonding. The torsion spring 244 may be helical and has a first free end 2441 and a second free end 2443. The first free end 2441 of the torsion spring 244 is connected to the turntable 245, and the second free end 2443 is fixedly positioned relative to the circuit board 243, for example, it is fixedly connected to the housing 242 or the circuit board 243. The turntable 245 is rotatably connected to the housing 242, for example, one of the turntable 245 and the housing 242 has a rotating shaft, and the other has a shaft hole, thereby realizing the rotatable connection between the turntable 245 and the housing 242. Cable 241 is wound around the outer periphery of torsion spring 244. One of circuit board 243 and turntable 245 has a contact pin (not shown), and the other has a ring conductor (not shown). The contact pin makes contact with the ring conductor to conduct electricity. Cable 241 is electrically connected to the contact pin or ring conductor on turntable 245, thereby achieving an electrical connection between cable 241 and circuit board 243. For example, circuit board 243 has a contact pin, turntable 245 has a ring conductor, and cable 241 is electrically connected to the ring conductor; or circuit board 243 has a ring conductor, turntable 245 has a contact pin, and cable 241 is electrically connected to the contact pin, achieving an electrical connection between cable 241 and circuit board 243. Of course, cable 241 can also be directly electrically connected to circuit board 243 by means of wire bonding or other methods.

[0077] Cable 241 can be held in place by turntable 245. When the user pulls cable 241, it causes turntable 245 to rotate relative to housing 242 in one direction, such as clockwise, gradually extending it out of housing 242. During this process, the contact pin remains in contact with the annular conductor, thereby ensuring the electrical connection between cable 241 and circuit board 25. During this process, torsion spring 244 accumulates elastic potential energy, causing turntable 245 to tend to rotate counterclockwise. When the user no longer needs to power external electronic devices through wearable fan 20, torsion spring 244 can release elastic potential energy, causing cable 241 extending out of housing 242 to gradually retract into housing 242.

[0078] Referring to Figure 16, in some embodiments, the telescopic cable module 24 includes a limiting member 246 rotatably connected to the housing 242. The turntable 245 has a stop position 2451 and an unlock position 2453. During the process of the cable 241 being pulled out of the housing 242, when the cable 241 drives the turntable 245 to rotate to the stop position 2451 corresponding to the limiting member 246, the limiting member 246 restricts the rotation of the turntable 245. When the cable 241 continues to be pulled out of the housing 242 and drives the turntable 245 to rotate, the limiting member 246 rotates relative to the housing 242 and moves to the unlock position 2453, so that the cable 241 can be gradually wound into the housing 242. Figure 16 shows that the turntable 245 is provided with corresponding limiting grooves 245a and guide grooves 245b. The groove wall of the limiting groove 245a can be used as the stop position 2451, and the connection between the groove wall of the guide groove 245b and the groove wall of the limiting groove 245a is the unlock position 2453.

[0079] The sidewall of the guide groove 245b can guide and limit the movement of the end of the limiting member 246, so that during the pulling out of the cable 241, the end of the limiting member 246 continues to move along the guide groove 245b. When the user stops pulling the cable 241 out, the torsion spring 244 drives the turntable 245 to rotate in the opposite direction (e.g., clockwise), and the end of the limiting member 246 is guided by the sidewall of the guide groove 245b into the limiting groove 245a, thereby stopping the cable 241. When the user continues to pull the cable 241 out, the turntable 245 continues to rotate in the original direction (e.g., counterclockwise), and the end of the limiting member 246 exits the limiting groove 245a and enters the guide groove 245b, allowing the cable 241 to continue to be pulled out. It is understood that the above functions can be achieved by designing the depth and width of the guide groove 245b and the limiting groove 245a, which will not be elaborated further in this application.

[0080] When the user pulls the cable 241 out of the housing 242 and drives the turntable 245 to rotate, the end point of the limiting member 246 moves along the guide groove 245b to the stop position 2451. At this time, if the user stops pulling the cable 241, under the action of the torsion spring 244, the end point of the limiting member 246 abuts against the groove wall of the limiting groove 245a, and the turntable 245 stops rotating, thus achieving the stopping effect of the cable 241. When the user continues to pull the cable 241 out of the housing 242 and drives the turntable 245 to rotate, the limiting member 246 rotates relative to the housing 242 and retracts to the guide groove 245b. It can switch to the guide groove 245b and continue to move along the guide groove 245b, that is, reach the unlock position 2453. The turntable 245 can continue to rotate, causing the cable 241 to continuously extend out of the housing 242, or the cable 241 can gradually be wound back into the housing 242. The combination of the limit switch 246 and the turntable 245 enables the cable 241 to stop and automatically rewind, improving ease of use. Furthermore, the turntable 245 can be configured with two or more stopping positions 2451 and unlocking positions 2453, with each stopping position 2451 corresponding to one unlocking position 2453.

[0081] Of course, in other embodiments, other structures can be used to replace the locking effect of the limiting member 246 on the cable 241. For example, the wearable fan 20 may include a limiting member 246 that is movably fitted to the second housing 2113. The limiting member 246 has a first position and a second position. In the first position, the cable 241 can be pulled out or retracted into the second housing 2113. In the second position, the limiting member 246 abuts against the cable 241 and restricts the movement of the cable 241 relative to the second housing 2113.

[0082] For example, the second shell 2113 of the limiting member 246 is slidably engaged, and the sliding of the limiting member 246 and the second shell 2113 has appropriate damping to prevent the limiting member 246 from easily retracting. When the user needs to stop the cable 241 during the process of pulling out the cable 241, the limiting member 246 is pushed relative to the second shell 2113 to the position that abuts against the cable 241, i.e., the second position, which can stop the cable 241 in the second shell 2113; when the user needs to retract the cable 241 into the second shell 2113, the limiting member 246 is pushed in the opposite direction to the first position. After the limiting member 246 no longer abuts against the cable 241, the cable 241 can be retracted into the cover 242 under the action of the torsion spring 244 and the turntable 245.

[0083] For example, the limiting member 246 is rotatably engaged with the second housing 2113. The limiting member 246 may have an eccentric wheel structure and appropriate rotational damping to prevent the limiting member 246 from easily retracting. When the user needs to stop the cable 241 while pulling it out, the limiting member 246 is rotated so that the eccentric wheel of the limiting member 246 presses against the cable 241, thus reaching the second position and stopping the cable 241 in the second housing 2113. When the user needs to retract the cable 241 into the second housing 2113, the limiting member 246 is rotated in the opposite direction to the first position. After the eccentric wheel of the limiting member 246 no longer presses against the cable 241, the cable 241 can be retracted into the cover 242 under the action of the torsion spring 244 and the turntable 245.

[0084] Both of the above-described limiting member 246 structures can stop the cable 241, and combined with the torsion spring 244, they can achieve an automatic winding effect, improving ease of use. In other embodiments, the limiting member 246 can also adopt other structural forms to achieve the effect of stopping the cable 241.

[0085] Understandably, the housing 242 of the telescopic cable module 24 is not essential and can be omitted to simplify the structure of the wearable fan 20 and improve its compactness. For example, the telescopic cable module 24 includes a torsion spring 244 and a turntable 245. The first free end 2441 of the torsion spring 244 is connected to the turntable 245, and the second free end 2443 of the torsion spring 244 is fixed relative to the position of the circuit board 25. The cable 241 is wound around the outer periphery of the torsion spring 244 and is directly electrically connected to the circuit board 25, for example, by soldering or combining lead wires, or by using a contact pin and a ring conductor to achieve an electrical connection between the cable 241 and the circuit board 25. The cable 241 can be held in place by the turntable 245, and when the user pulls the cable 241, it causes the turntable 245 to rotate relative to the second housing 2113 in one direction, for example, clockwise, to gradually extend out of the second housing 2113. During this process, the torsion spring 244 accumulates elastic potential energy, causing the turntable 245 to tend to rotate counterclockwise. When the user no longer needs to power external electronic devices through the wearable fan 20, the torsion spring 244 releases elastic potential energy, causing the cable 241 extending out of the second shell 2113 to gradually retract into the second shell 2113.

[0086] Referring to Figure 17, similar to the first embodiment, the turntable 245 may be provided with a first conductive element 248. The cable 241 is electrically connected to the first conductive element 248, for example, the end of the cable 241 is directly soldered to the first conductive element 248. The circuit board 25 is provided with a second conductive element 251. The second conductive element 251 is slidably in contact with the first conductive element 248 and conducts electricity to allow the cable 241 to be electrically connected to the circuit board 25. One of the first conductive element 248 and the second conductive element 251 is a contact pin, and the other is a ring conductor. Taking the first conductive element 248 as a contact pin and the second conductive element 251 as a ring conductor as an example, the telescopic cable module 24 includes a contact pin, which is located on the turntable 245 and is directly electrically connected to the cable 241. The circuit board 25 is provided with a ring conductor, and the ring conductor and the contact pin may each have multiple ring conductors, which are in one-to-one contact and conduct electricity. The contact pin can be a pogo pin to achieve elastic contact between the contact pin and the ring conductor, ensuring the reliability of the electrical contact between the two. The cable 241 can be held in place by the turntable 245, and as the user pulls the cable 241, it causes the turntable 245 to rotate relative to the second housing 2113 in one direction, such as clockwise, gradually extending out of the second housing 2113. During the rotation of the turntable 245, the contact pin remains in contact with the annular conductor to maintain electrical connection between the cable 241 and the circuit board 25. During this process, the torsion spring accumulates elastic potential energy, causing the turntable 245 to tend to rotate counterclockwise. When the user no longer needs to power external electronic devices through the wearable fan 20, the torsion spring releases its elastic potential energy, causing the cable 241 extending out of the grip to gradually retract into the second housing 2113.

[0087] Specifically, in some embodiments, the second housing 2113 may also form a mounting groove 21c for limiting the cable 241 and the torsion spring 244. The torsion spring 244 and the cable 241 can be wound and mounted in the mounting groove 21c. The first free end 2441 of the torsion spring 244 is connected to the turntable 245, and the second free end 2443 of the torsion spring 244 is fixed relative to the position of the circuit board 25, for example, fixedly connected to the circuit board 25 or the second housing 2113. The cable 241 is wound around the outer periphery of the torsion spring 244 and can be engaged with the turntable 245. The turntable 245 equipped with a stylus is set corresponding to the mounting groove 21c and is rotatably connected to the second housing 2113 or the circuit board 25 through a rotating shaft. The stylus is directly electrically connected to the cable 241. The circuit board 25 covers the mounting groove 21c and is fixed to the second housing 2113. The circuit board 25 and the second housing 2113 can form a storage space 21d for limiting the cable 241, the torsion spring 244 and the turntable 245. The contact pin is positioned and makes contact with the annular conductor on the circuit board 25, allowing the contact pin to remain in slidable contact with the annular conductor as the turntable 245 rotates relative to the second housing 2113, thus ensuring the electrical connection between the cable 241 and the circuit board 25. By eliminating the housing 242 and the circuit board 243 within it, the internal structure of the wearable fan 20 is made more compact, enabling a miniaturized design.

[0088] In other embodiments, referring again to Figures 8, 9, and 10, similar to the first embodiment, the housing 242 may also have through holes corresponding to the turntable 245. The turntable 245 is rotatably mounted on the housing 242. The first free end 2441 of the torsion spring 244 is connected to the turntable 245, for example, engaged with the turntable 245. The second free end 2443 of the torsion spring 244 is fixed relative to the position of the housing 242, and the cable 241 is wound around the outer periphery of the torsion spring 244. The stylus is exposed outside the housing 242 through the through hole and abuts against the annular conductor on the circuit board 25 to ensure electrical connection between the cable 241 and the circuit board 25 during the rotation of the turntable 245. The telescopic cable module 24 can still be made into a modular component, which is convenient for assembly into the second shell 2113 and electrical connection with the circuit board 25, improving the assembly efficiency of the wearable fan 20.

[0089] The housing 242 includes a bottom cover and a top cover assembly structure similar to that of the first embodiment, used to jointly enclose and form an accommodating space for housing the torsion spring 244 and the cable 241. The bottom cover has a through hole, and the turntable 245 is rotatably connected to the top cover. The through hole and the turntable 245 can also be clearance-fitted to prevent dust, droplets, or other foreign objects from easily entering the housing 242 through the through hole, ensuring the operational reliability of the telescopic cable module 24. This structure can also limit the turntable 245 during rotation through the wall of the through hole, preventing the turntable 245 from tilting at an excessive angle, which could lead to poor contact between the contact pin and the annular conductor.

[0090] The thickness of the bottom cover that defines the through hole can be no greater than the thickness of the turntable 245, that is, the thickness of the bottom cover at the edge of the through hole is no greater than the thickness of the turntable 245, in order to reduce the contact area between the hole wall of the through hole and the circumferential surface of the turntable 245 during rotation and reduce the possible frictional resistance. For details, please refer to the first embodiment, which will not be repeated here.

[0091] Understandably, the contact pin can be located on the circuit board 25, and the annular conductor can be located on the turntable 245. During the rotation of the turntable 245, this structure can also maintain the electrical connection between the cable 241 and the circuit board 25.

[0092] In this embodiment, when the housing 242 is omitted, the telescopic cable module 24 may also include a limiting member 246 movably connected to the second housing 2113 of the housing 21. The turntable 245 has a stop position 2451 and an unlock position 2453. During the process of the cable 241 being pulled out of the second housing 2113, when the cable 241 drives the turntable 245 to rotate to the stop position 2451 corresponding to the limiting member 246, the limiting member 246 restricts the rotation of the turntable 245. When the cable 241 continues to be pulled out of the second housing 2113 and drives the turntable 245 to rotate, the limiting member 246 moves relative to the turntable 245 to the unlock position 2453, so that the cable 241 is gradually wound into the second housing 2113. The stopping principle and structure of the limiting member 246 for the cable 241, as well as the unlocking principle and structure, can be referred to the foregoing content and will not be repeated here. The combination of the limiter 246 and the turntable 245 can stop the cable 241, and the torsion spring 244 can achieve automatic winding, improving the convenience of use.

[0093] Of course, in this embodiment, the wearable fan 20 may also include a limiting member 246 that is movably fitted into the second housing 2113. The limiting member 246 has a first position and a second position. In the first position, the cable 241 can be pulled out or retracted into the second housing 2113; in the second position, the limiting member 246 abuts against the cable 241 and restricts the movement of the cable 241 relative to the second housing 2113. The principle and structure of the limiting member 246 in stopping the cable 241, as well as the principle and structure of unlocking, can be referred to the foregoing content and will not be repeated here. The structure of the limiting member 246 can achieve the stopping of the cable 241, and combined with the torsion spring 244, it can achieve an automatic winding effect, improving the convenience of use. In other embodiments, the limiting member 246 may also adopt other structural forms to achieve the stopping effect on the cable 241.

[0094] When the housing 242 adopts a through-hole to expose the first conductive element 248, the telescopic cable module 24 also includes a limiting element 247 rotatably connected to the housing 242, or the wearable fan 20 includes a limiting element 247 that is movably fitted to the second housing 2113 or the circuit board 25 to stop or unlock the cable 241, which will not be described in detail here.

[0095] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0096] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A wearable fan, comprising: The shell assembly is designed to be worn on the user's body; A fan is disposed on the housing assembly, and the housing assembly has an air outlet for the fan to discharge air. A power module is disposed in the housing assembly and is used to supply power to the fan; as well as A telescopic cable module is disposed on the housing assembly and includes a cable that is retractable relative to the housing assembly. The cable is retractable within the housing assembly and can be pulled out of the housing assembly for connection to an external electronic device to supply power to the external electronic device via the power module.

2. The wearable fan according to claim 1, characterized in that, The shell assembly includes a first shell for wearing around a user's neck, and a second shell connected to an end of the first shell. At least one of the first shell and the second shell has the air outlet. At least one of the first shell and the second shell is equipped with the fan. At least one of the first shell and the second shell is provided with the power module. The telescopic cable module is provided in at least one of the first shell and the second shell.

3. The wearable fan according to claim 2, characterized in that, The first shell and the second shell are movably connected and have a first state and a second state. The first shell is provided with a first air outlet extending circumferentially along the user's neck, and the second shell is provided with the fan and a second air outlet. In the first state, the first air outlet and the second air outlet are connected and communicated. In the second state, the first air outlet is offset from the second air outlet to adjust the orientation of the second air outlet.

4. The wearable fan according to claim 3, characterized in that, The first shell is connected to the second shell at both ends, and both second shells are equipped with the fan and the second air outlet.

5. The wearable fan according to claim 1, characterized in that, The wearable fan includes a circuit board disposed within the housing assembly, the telescopic cable module includes a cover disposed within the housing assembly, the fan and the power module are electrically connected to the circuit board respectively, the cover and the circuit board are fixed in relative position, and the cable is telescopically disposed within the cover.

6. The wearable fan according to claim 5, characterized in that, The telescopic cable module includes a circuit board, a torsion spring, and a turntable disposed within the housing. The circuit board is fixed in position relative to the housing and is electrically connected to the circuit board. The first free end of the torsion spring is connected to the turntable, and the second free end of the torsion spring is fixed in position relative to the circuit board. The turntable is rotatably connected to the housing, and the cable is wound around the outer periphery of the torsion spring and electrically connected to the circuit board. The cable is used to pull the turntable to rotate relative to the housing to extend outside the housing, and the turntable is used to drive the cable extending outside the housing to rewind into the housing.

7. The wearable fan according to claim 6, characterized in that, The telescopic cable module includes a limiting member rotatably connected to the housing. The turntable has a stop position and an unlock position. During the process of the cable being pulled out of the housing, when the cable drives the turntable to rotate to the stop position corresponding to the limiting member, the limiting member restricts the rotation of the turntable. When the cable continues to be pulled out of the housing and drives the turntable to rotate, the limiting member rotates relative to the housing and moves to the unlock position, so that the cable is wound back into the housing.

8. The wearable fan according to claim 1, characterized in that, The telescopic cable module includes a torsion spring and a turntable. The wearable fan includes a circuit board disposed within the housing assembly. The fan and the power module are electrically connected to the circuit board. The first free end of the torsion spring is connected to the turntable, and the second free end of the torsion spring is fixed relative to the position of the circuit board. The cable is wound around the outer periphery of the torsion spring. The cable is used to pull the turntable to rotate relative to the circuit board to extend out of the housing assembly. The turntable is used to drive the cable extending out of the housing assembly to be wound back into the housing assembly.

9. The wearable fan according to claim 8, characterized in that, The telescopic cable module includes a limiting member rotatably connected to the shell assembly. The turntable has a stop position and an unlock position. During the process of the cable being pulled out of the shell assembly, when the cable drives the turntable to rotate to the stop position corresponding to the limiting member, the limiting member restricts the rotation of the turntable. When the cable continues to be pulled out of the shell assembly and drives the turntable to rotate, the limiting member moves relative to the turntable to the unlock position, so that the cable is wound back into the shell assembly.

10. The wearable fan according to claim 1, characterized in that, The shell assembly includes an outer shell and a wearable component connected to the outer shell. The outer shell has the air outlet, and the fan, the power module, and the retractable cable module are respectively disposed on the outer shell.

11. The wearable fan according to claim 10, characterized in that, The wearable component is integrally formed or assembled and fixed with the outer shell.

12. The wearable fan according to claim 10, characterized in that, The wearable component is rotatably connected to the outer shell.

13. The wearable fan of claim 10, wherein, The outer casing is provided with a locking structure and an opening for the cable to extend and retract. The locking structure is used to engage with one end of the cable that extends out of the outer casing to form a ring structure for suspension to the human body.

14. The wearable fan according to claim 10, characterized in that, The housing includes a first housing connected to a second housing, a fan mounted on the first housing, and the first housing having the air outlet. The power module and the telescopic cable module are disposed in the second housing. The first housing can rotate relative to the second housing to adjust the orientation of the air outlet.

15. The wearable fan according to claim 14, characterized in that, The rotation axis of the fan is parallel to the rotation axis of the second housing relative to the first housing.

16. The wearable fan according to claim 10, characterized in that, The wearable fan includes a circuit board disposed within the housing assembly, the telescopic cable module includes a cover disposed within the housing assembly, the fan and the power module are electrically connected to the circuit board respectively, the cover and the circuit board are fixed in relative position, and the cable is telescopically disposed within the cover.

17. The wearable fan according to claim 16, characterized in that, The telescopic cable module includes a circuit board, a torsion spring, and a turntable disposed within the housing. The circuit board is fixed in position relative to the housing and is electrically connected to the circuit board. The first free end of the torsion spring is connected to the turntable, and the second free end of the torsion spring is fixed in position relative to the circuit board. The turntable is rotatably connected to the housing, and the cable is wound around the outer periphery of the torsion spring and electrically connected to the circuit board. The cable is used to pull the turntable to rotate relative to the housing to extend outside the housing, and the turntable is used to drive the cable extending outside the housing to rewind into the housing.

18. The wearable fan according to claim 17, characterized in that, The telescopic cable module includes a limiting member rotatably connected to the housing. The turntable has a stop position and an unlock position. During the process of the cable being pulled out of the housing, when the cable drives the turntable to rotate to the stop position corresponding to the limiting member, the limiting member restricts the rotation of the turntable. When the cable continues to be pulled out of the housing and drives the turntable to rotate, the limiting member rotates relative to the housing and moves to the unlock position, so that the cable is wound back into the housing.

19. The wearable fan according to claim 10, characterized in that, The telescopic cable module includes a torsion spring and a turntable. The wearable fan includes a circuit board disposed within the housing assembly. The fan and the power module are electrically connected to the circuit board. The first free end of the torsion spring is connected to the turntable, and the second free end of the torsion spring is fixed relative to the position of the circuit board. The cable is wound around the outer periphery of the torsion spring. The cable is used to pull the turntable to rotate relative to the circuit board to extend out of the housing assembly. The turntable is used to drive the cable extending out of the housing assembly to be wound back into the housing assembly.

20. The wearable fan according to claim 19, characterized in that, The telescopic cable module includes a limiting member movably connected to the housing. The turntable has a stop position and an unlock position. During the process of the cable being pulled out of the housing assembly, when the cable drives the turntable to rotate to the stop position corresponding to the limiting member, the limiting member restricts the rotation of the turntable. When the cable continues to be pulled out of the housing assembly and drives the turntable to rotate, the limiting member moves relative to the turntable to the unlock position, so that the cable is wound back into the housing assembly.

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