Waist hanging fan

Abstract

The utility model relates to a waist hanging fan which comprises a shell, a fan assembly, a power module and a telescopic line module, the shell comprises an outer shell and a hanging piece connected to the outer shell, the fan assembly is arranged in the outer shell, the outer shell is provided with an air outlet for the fan assembly to discharge air, and the power module is arranged in the outer shell and used for supplying power to the fan assembly. The telescopic line module is arranged in the shell and comprises a cable which can stretch out of the shell relative to the shell. When a user carries the waist-hanging fan and has a charging requirement, the cable can be pulled out of the shell of the waist-hanging fan and is in butt joint with external electronic equipment such as a mobile phone to supply power to the external electronic equipment, for example, a charging function is achieved, so that the user does not need to carry a mobile power supply and a charging wire additionally, and the use convenience is improved. When a user does not need to supply power to external electronic equipment through the waist-hanging fan any more, the cable can be contained in the shell, the waist-hanging fan can still keep a relatively simple appearance, the waist-hanging fan is convenient to carry by the user, and the use convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to a waist-mounted fan. Background Technology

[0002] Waist-mounted fans are generally used outdoors, hanging from a user's belt or backpack strap to provide cooling. Due to their relatively good portability and cooling performance, and with advancements in battery technology improving battery life, waist-mounted fans are gaining increasing acceptance among users for outdoor activities and travel. However, when using a waist-mounted fan outdoors, users typically need to use a power bank to charge their phones or other electronic devices, which can be inconvenient. Utility Model Content

[0003] This utility model provides a waist-mounted fan, which improves the user's convenience.

[0004] A waist-mounted fan includes:

[0005] The housing includes an outer shell and a suspension member connected to the outer shell;

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

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

[0008] A telescopic cable module is disposed within the housing and includes a cable that can extend out of the housing relative to the housing. The cable is used to connect to an external electronic device and to supply power to the external electronic device through the power module. The cable can also be stored within the housing.

[0009] In one embodiment, the suspension component includes a first hanger and a second hanger, wherein the opening direction of the first hanger is consistent with the opening direction of the air outlet, and the opening direction of the second hanger is opposite to the opening direction of the air outlet.

[0010] In one embodiment, at least one of the first and second hanging members is integrally formed or assembled and fixed with the outer shell.

[0011] In one embodiment, the housing includes a first end face and a second end face opposite to each other, and a first side face, a second side face, a third side face, and a fourth side face connected between the first end face and the second end face and connected in sequence. The first side face is connected to the fourth side face and is disposed opposite to the third side face, and the second side face is disposed opposite to the fourth side face. The first end face has the air outlet, and at least one of the first side face and the third side face is provided with the suspension member.

[0012] In one embodiment, the suspension member is rotatably connected to the housing.

[0013] In one embodiment, the second side has an opening for the cable to extend and retract, and the fourth side has a locking structure for engaging with one end of the cable extending out of the housing to form a ring structure for suspension to the human body.

[0014] In one embodiment, the telescopic cable module includes a housing and a circuit board disposed within the housing, the fan assembly and the power module being electrically connected to the circuit board, the housing and the circuit board being fixed in position relative to each other, and the cable being telescopically disposed within the housing.

[0015] In one embodiment, 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 electrically connected to the circuit board. A first free end of the torsion spring is connected to the turntable, and a 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. One of the circuit board and the turntable is provided with a contact pin, and the other is provided with an annular conductor. The contact pin contacts and conducts through the annular conductor, and the cable is electrically connected to the contact pin or the annular conductor on the turntable. The cable is used to pull the turntable to rotate relative to the housing to gradually extend out of the housing, and the turntable is used to drive the cable extending out of the housing to gradually rewind back into the housing.

[0016] In one embodiment, the telescopic cable module includes a locking block 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 locking block, the locking block restricts the rotation of the turntable. When the cable continues to be pulled out of the housing and drives the turntable to rotate, the locking block rotates relative to the housing and moves to the unlock position, so that the cable is gradually wound back into the housing.

[0017] In one embodiment, the waist-mounted fan includes a limiting member movably fitted to the housing, the limiting member having a first position and a second position, wherein in the first position the cable can be pulled out or retracted into the housing; and in the second position the limiting member abuts against the cable and restricts the movement of the cable relative to the housing.

[0018] In one embodiment, the telescopic cable module includes a torsion spring and a turntable. The waist-mounted fan includes a circuit board disposed within the housing. The fan assembly and the power module are electrically connected to the circuit board, respectively. 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 gradually extend out of the housing. The turntable is used to drive the cable extending out of the housing to gradually rewind into the housing.

[0019] In one embodiment, the telescopic cable module includes a locking block, and the turntable has a locking position and an unlocking position. During the process of the cable being pulled out of the housing, when the cable drives the turntable to rotate to the locking position corresponding to the locking block, the locking block restricts the rotation of the turntable; when the cable continues to be pulled out of the housing and drives the turntable to rotate, the locking block moves relative to the turntable to the unlocking position, so that the cable is gradually wound into the housing.

[0020] In one embodiment, the waist-mounted fan includes a limiting member movably fitted to the housing, the limiting member having a first position and a second position, wherein in the first position the cable can be pulled out or retracted into the housing; and in the second position the limiting member abuts against the cable and restricts the movement of the cable relative to the housing.

[0021] In one embodiment, the cable includes a cable body, a connector, and a digital display, the digital display being connected between the free end of the cable body and the connector, the connector being used to connect to an external electronic device.

[0022] The above-mentioned waist-mounted fan includes a housing, a fan assembly, a power module, and a retractable cable module. The housing includes an outer shell and a suspension component connected to the outer shell. The fan assembly is located inside the outer shell, which has an air outlet for the fan assembly. The power module is located inside the outer shell and supplies power to the fan assembly. The retractable cable module is located inside the outer shell and includes a cable that can extend relative to the outer shell to protrude outside the shell. The cable is used to connect to external electronic devices and supplies power to the external electronic devices through the power module. The cable can also be stored inside the housing. When a user carries the waist-mounted fan and needs to charge it, they can pull the cable of the retractable cable module out of the waist-mounted fan's housing and connect it to an external electronic device such as a mobile phone. The power module of the waist-mounted fan supplies power to the external electronic device and provides charging functionality, 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 of the waist-mounted fan to supply power to the external electronic device. When users no longer need to power external electronic devices via the waist-mounted fan, the retractable cable module's cable can be stored inside the housing, allowing the waist-mounted fan to maintain a relatively simple appearance, making it easy for users to carry and improving ease of use. Attached Figure Description

[0023] 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 these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of a waist-mounted fan according to an embodiment of this application;

[0025] Figure 2 for Figure 1 A schematic diagram showing another perspective of the waist-mounted fan;

[0026] Figure 3 for Figure 1 The exploded view of the waist-mounted fan shown;

[0027] Figure 4 This is a schematic diagram of a cable according to one embodiment;

[0028] Figure 5 for Figure 1 A schematic diagram of one embodiment of the waist-mounted fan is shown;

[0029] Figure 6 for Figure 1 Another exploded view of the waist-mounted fan shown;

[0030] Figure 7 for Figure 6A magnified view of point A of the waist-mounted fan shown. Detailed Implementation

[0031] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0032] 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.

[0033] 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 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.

[0034] refer to Figure 1 , Figure 2 and Figure 3 This application discloses a waist-mounted fan 10, including a housing 11, a fan assembly 12, a power module 13, and a retractable cord module 14. The housing 11 includes an outer shell 111 and a suspension member 113 connected to the outer shell 111. The fan assembly 12, power module 13, and retractable cord module 14 are respectively disposed on the outer shell 111, and the outer shell 111 provides support and limitation for these devices. The suspension member 113 can be used to hang the fan on a user's waist belt or backpack strap, thereby allowing the waist-mounted fan 10 to be worn on the human body for heat dissipation.

[0035] The fan assembly 12 is housed within the housing 111, which has an air outlet 111a for discharging air from the fan assembly 12. During operation, the fan assembly 12 drives airflow out of the air outlet 111a to dissipate heat for the user. The location of the air inlet on the housing 111 can vary; for example, the air inlet can be located on the side of the housing 111 opposite to the air outlet 111a, or it can be located on the periphery of the housing 111. This application does not impose any limitations on this. In particular, in some embodiments, the fan assembly 12 can employ an air compressor, such as a turbocharger, to achieve a bladeless design for the waist-mounted fan 10, resulting in a more streamlined appearance.

[0036] The power module 13 is located inside the housing 111 and is used to supply power to the fan assembly 12. For example, a physical button or a virtual button can be set on the housing 111. When the button is triggered, the fan assembly 12 and the power module 13 can be connected or disconnected to start or stop the fan assembly 12.

[0037] The retractable cable module 14 is housed within the housing 111 and includes a cable 141 that is retractable relative to the housing 111 to extend beyond it. The cable 141 is used to connect to an external electronic device and supply power to the device via the power module 13. The cable 141 can also be retracted within the housing 111. In some embodiments, the cable 141 can be coiled and stored within the housing 111 to achieve a concealed effect, maintaining a clean appearance for the waist-mounted fan 10 and preventing the cable 141 from causing inconvenience during normal use. When the user needs to power an external electronic device such as a mobile phone, the cable 141 of the retractable cable module 14 can be pulled out from the housing 111 and connected to the external electronic device. The power module 13 of the waist-mounted fan 10 then supplies power to these external electronic devices, such as charging a mobile phone.

[0038] refer to Figure 4 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, and the connector 1413 is used to connect to an external electronic device. The connector 1413 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 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 necessary; for example, in... Figure 1 , Figure 2 and Figure 3 In the embodiment shown, the cable 141 does not have a digital display unit 1415.

[0039] Understandably, the power module 13 of the waist-mounted fan 10 generally includes a rechargeable battery such as a lithium battery. As battery technology advances, battery capacity is on the rise, and the battery life of the waist-mounted fan 10 is thus steadily improving. By combining the large-capacity battery of the waist-mounted fan 10 with the retractable cable module 14, the power module 13 of the waist-mounted fan 10 can be used to power external electronic devices, such as charging mobile phones, thus improving the convenience of use.

[0040] The above-mentioned waist-mounted fan 10 includes a housing 11, a fan assembly 12, a power supply module 13, and a telescopic cable module 14. The housing 11 includes an outer shell 111 and a hanging member 113 connected to the outer shell 111. The fan assembly 12 is located inside the outer shell 111. The outer shell 111 has an air outlet 111a for the fan assembly 12 to discharge air. The power supply module 13 is located inside the outer shell 111 and is used to supply power to the fan assembly 12. The telescopic cable module 14 is located inside the outer shell 111 and includes a cable 141 that can extend and retract relative to the outer shell 111 to extend outside the outer shell 111. The cable 141 is used to connect to external electronic devices and supply power to external electronic devices through the power supply module 13. The cable 141 can also be stored inside the outer shell 111. When a user carries the waist-mounted fan 10 and needs to charge it, the cable 141 of the retractable cable module 14 can be pulled out from the outer casing 111 of the waist-mounted fan 10 and connected to an external electronic device such as a mobile phone. The power module 13 of the waist-mounted 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 waist-mounted fan 10 to power it. When the user no longer needs to power the external electronic device through the waist-mounted fan 10, the cable 141 of the retractable cable module 14 can be stored inside the outer casing 111, allowing the waist-mounted fan 10 to maintain a relatively simple appearance, making it easy for the user to carry and improving convenience.

[0041] In some embodiments, the suspension member 113 is integrally formed with the housing 111, for example, by injection molding, which improves the efficiency of the housing 111's processing and reduces its cost. In other embodiments, the suspension member 113 can be assembled and fixed to the housing 111, for example, by fasteners such as screws, adhesives, or clips. The material of the suspension member 113 can be the same as that of the housing 111, for example, both being plastic. Of course, the material of the suspension member 113 can be different from that of the housing 111. For example, if the housing 111 is made of plastic, the suspension member 113 can be made of metal such as stainless steel or manganese steel, improving the fatigue resistance and texture of the suspension member 113.

[0042] refer to Figure 3The suspension member 113 may include an integrally formed fixing part 113a, a deformable part 113b, and an abutment part 113c. The fixing part 113a is fixedly connected to the housing 111, for example, by injection molding or bonding. The deformable part 113b has an arc-shaped cross-section. One end of the deformable part 113b is connected to the fixing part 113a, and the opposite end of the deformable part 113b is connected to the abutment part 113c. The abutment part 113c is inclined towards the housing 111 from the end of the deformable part 113b away from the fixing part 113a. Taking the user hanging the waist fan 10 on their belt as an example, the abutment part 113c can be inserted between the user's belt and body. The belt pushes the end of the abutment part 113c away from the deformable part 113b away from the outer shell 111, providing space for the belt to enter. During this process, the deformable part 113b undergoes elastic deformation. The belt continues to be inserted between the abutment part 113c and the outer shell 111 until it abuts the deformable part 113b. The end of the abutment part 113c away from the deformable part 113b can press against the outer shell 111 or press against the outer shell 111 through the belt or clothing, restricting the belt between the suspension part 113 and the outer shell 111, thereby reliably wearing the waist fan 10 on the body.

[0043] In other embodiments, the suspension member 113 can be rotatably connected to the housing 111, for example, by means of screws, bolts, or other pivot structures. For example, the fixing part 113a of the suspension member 113 is rotatably connected to the housing 111, and the relative rotation between the two has suitable damping. When the user hangs the waist fan 10 on a waist belt or backpack strap, etc., the housing 111 can be driven to rotate relative to the suspension member 113 to adjust the orientation of the air outlet 111a, thereby improving the convenience of use.

[0044] Furthermore, combined with Figure 1 and Figure 2 The suspension member 113 may include a first hanger 1131 and a second hanger 1133, which have similar structures. The opening direction of the first hanger 1131 is consistent with the opening direction of the air outlet 111a, and the opening direction of the second hanger 1133 is opposite to the opening direction of the air outlet 111a. At least one of the first hanger 1131 and the second hanger 1133 may be integrally formed with the outer shell 111. Specifically, in this embodiment, the cross-section of the outer shell 111 is approximately racetrack-shaped.

[0045] The outer casing 111 includes a first end face 1111 and a second end face 1112 facing each other, and a first side face 1113, a second side face 1114, a third side face 1115, and a fourth side face 1116 connected between the first end face 1111 and the second end face 1112 and connected sequentially. The first side face 1113 is connected to the fourth side face 1116 and is opposite to the third side face 1115. The second side face 1114 is opposite to the fourth side face 1116. The first end face 1111 has an air outlet 111a. The first side face 1113 is provided with a first hanging member 1131, and the third side face 1115 is provided with a second hanging member 1133. The opening direction of the first hanging member 1131 is opposite to the opening direction of the second hanging member 1133. For example, the opening direction of the first hanging member 1131 points towards the first end face 1111, and the opening direction of the second hanging member 1133 points towards the second end face 1112. During user use, when the opening of the first pendant 1131 is open and inserted into a belt or similar position, the opening of the waist-mounted fan 10 faces the user's legs, thereby dissipating heat from the area below the waist. When the opening of the second pendant 1133 is open and inserted into a belt or similar position, the opening of the waist-mounted fan 10 faces the user's head, thereby dissipating heat from the area above the waist. When the first pendant 1131 and the second pendant 1133 are suspended in other positions, the orientation of the air outlet 111a changes accordingly, thus allowing for flexible changes in the airflow direction of the waist-mounted fan 10 and improving ease of use; further details will not be elaborated here.

[0046] refer to Figure 5 In some embodiments, the second side 1114 has an opening 111b for the extension and retraction of the cable 141, and the fourth side 1116 has a locking structure (not shown). The locking structure can be located inside the housing 111 and is used to lock the end of the cable 141 that extends out of the housing 111, i.e., the free end of the cable 141, to form a ring structure for suspension to the human body. For example, the housing 111 may be provided with a slot (not shown) and a locking plate (not shown) that slides with the housing 111. After the user pulls out the cable 141 stored in the housing 111, the free end of the cable 141 can be inserted into the slot, and then the locking plate can be pushed to cover the slot, locking the cable 141 to the housing 111. The cable 141 thus forms a ring structure for suspension to the human body. Users can suspend the waist-hanging fan 10 around their neck via the ring structure, or thread their hands through the ring structure, allowing them to direct airflow towards their face or other directions, thus improving the convenience of using the waist-hanging fan 10 and expanding its application scenarios. After the user retracts the latch, the free end of the cable 141 can be unlocked from the outer casing 111 and then normally wound back into the outer casing 111. The latching structure can also take other forms, such as having an openable and closable buckle on the outer casing 111. After opening the buckle, the free end of the cable 141 can be inserted; after the buckle is closed, the free end of the cable 141 can also be secured to the outer casing 111, thus forming a ring structure for hanging on the human body.

[0047] refer to Figure 6 The waist-mounted fan 10 includes a circuit board 15, which is located inside the housing 111. The circuit board 15 can integrate the control circuit, power management unit, etc. of the waist-mounted fan 10. The power module 13, fan assembly 12, and cable 141 are electrically connected to the circuit board 15. The start / stop button, speed adjustment knob, and other components of the fan assembly 12 can be set to correspond to the control circuit on the circuit board 15 to achieve the corresponding functions, which will not be described in detail here.

[0048] Continue to refer to Figure 6 and combined Figure 3 The telescopic cable module 14 includes a housing 143 disposed within the outer casing 111. The housing 143 is fixed in position relative to the circuit board 15, and the cable 141 is telescopically disposed within the housing 143. The housing 143 can be fixedly connected to the circuit board 15 or to the outer casing 111, thereby achieving relative fixation between the housing 143 and the circuit board 15. The telescopic cable module 14, including the housing 143, can be manufactured as an independent module and assembled into the waist-mounted fan 10, thereby improving assembly efficiency and ensuring the reliability of the telescopic cable module 14.

[0049] Specifically, the telescopic cable module 14 may include a circuit board 142, a torsion spring 144, and a turntable 146 disposed within a housing 143. The circuit board 142 is fixedly positioned relative to the housing 143, for example, it is fixedly connected to the housing 143 or the outer casing 111. The circuit board 142 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 146, and the second free end 1443 is fixedly positioned relative to the circuit board 142, for example, it is fixedly connected to the housing 143 or the circuit board 142. The turntable 146 is rotatably connected to the housing 143, for example, one of the turntable 146 and the housing 143 has a rotating shaft, and the other has a shaft hole, thereby realizing the rotatable connection between the turntable 146 and the housing 143. Cable 141 is wound around the outer periphery of torsion spring 144. One of circuit board 142 and turntable 146 is provided with a contact pin (not shown), and the other is provided with a ring conductor (not shown). The contact pin makes contact with the ring conductor to conduct electricity. Cable 141 is electrically connected to the contact pin or ring conductor on turntable 146, thereby realizing the electrical connection between cable 141 and circuit board 142. For example, circuit board 142 is provided with a contact pin, turntable 146 is provided with a ring conductor, and cable 141 is electrically connected to the ring conductor; or circuit board 142 is provided with a ring conductor, turntable 146 is provided with a contact pin, and cable 141 is electrically connected to the contact pin, thus realizing the electrical connection between cable 141 and circuit board 142. Of course, cable 141 can also be directly electrically connected to circuit board 142 by means of wire bonding or other methods.

[0050] Cable 141 can be held in place by turntable 146. When the user pulls cable 141, it causes turntable 146 to rotate relative to housing 143 in one direction, such as clockwise, gradually extending beyond housing 143. 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 146 to tend to rotate counterclockwise. When the user no longer needs to power external electronic devices via the waist fan 10, torsion spring 144 can release elastic potential energy, causing cable 141 extending beyond housing 143 to gradually retract into housing 143.

[0051] Simultaneously combined Figure 7 In some embodiments, the telescopic cable module 14 includes a locking block 147 rotatably connected to the housing 143. The turntable 146 has a locking position 1461 and an unlocking position 1463. During the process of the cable 141 being pulled out of the housing 143, when the cable 141 drives the turntable 146 to rotate to the locking position 1461 corresponding to the locking block 147, the locking block 147 restricts the rotation of the turntable 146. When the cable 141 continues to be pulled out of the housing 143 and drives the turntable 146 to rotate, the locking block 147 rotates relative to the housing 143 and moves to the unlocking position 1463, so that the cable 141 can be gradually wound into the housing 143. Figure 7 The dashed lines show the movement trajectory of the end point of the card block 147 in the areas of the stop position 1461 and the unlock position 1463. By setting corresponding limiting grooves 146a and guide grooves 146b on the turntable 146, the groove wall of the limiting groove 146a can serve as the stop position 1461, and the connection between the groove wall of the guide groove 146b and the groove wall of the limiting groove 146a is the unlock position 1463.

[0052] When the user pulls the cable 141 out of the housing 143 and drives the turntable 146 to rotate, the end of the locking block 147 moves along the guide groove 146b to the locking position 1461. At this time, if the user stops pulling the cable 141, under the action of the torsion spring 144, the end of the locking block 147 abuts against the groove wall of the limiting groove 146a, and the turntable 146 stops rotating, thus achieving the locking effect of the cable 141. When the user continues to pull the cable 141 out of the housing 143 and drives the turntable 146 to rotate, the locking block 147 rotates relative to the housing 143 and retracts to the guide groove 146b. It can switch to the guide groove 146b and continue to move along the guide groove 146b, that is, reach the unlocking position 1463. The turntable 146 can continue to rotate and make the cable 141 continuously extend out of the housing 143, or the cable 141 can gradually be wound back into the housing 143. The combination of the above-mentioned locking block 147 and turntable 146 can achieve the locking and stopping of cable 141 and automatic winding, improving the convenience of use. Moreover, the turntable 146 can be set with more than two locking positions 1461 and unlocking positions 1463, and the locking positions 1461 and unlocking positions 1463 can be matched one-to-one.

[0053] Of course, in other embodiments, other structures can be used to replace the locking effect of the locking block 147 on the cable 141. For example, the waist fan 10 may include a limiting member (not shown) that is movably fitted to the housing 111. The limiting member has a first position and a second position. In the first position, the cable 141 can be pulled out or retracted into the housing 111. In the second position, the limiting member abuts against the cable 141 and restricts the movement of the cable 141 relative to the housing 111.

[0054] For example, the limiting member slides with the housing 111, and the sliding of the limiting member with the housing 111 has appropriate damping to prevent the limiting member from easily retracting. When the user needs to stop the cable 141 while pulling it out, the limiting member is pushed relative to the housing 111 to the position where it presses against the cable 141, i.e., the first position, which can stop the cable 141 in the housing 111; when the user needs to retract the cable 141 into the housing 111, the limiting member is pushed in the opposite direction to the second position. After the limiting member no longer presses against the cable 141, the cable 141 can be retracted into the cover 143 under the action of the torsion spring 144 and the turntable 146.

[0055] For example, the limiting member rotates with the housing 111. The limiting member may have an eccentric wheel structure and appropriate rotational damping to prevent the limiting member from easily retracting. When the user needs to stop the cable 141 while pulling it out, the limiting member is rotated so that the eccentric wheel of the limiting member presses against the cable 141, i.e., reaching the first position, thus stopping the cable 141 in the housing 111. When the user needs to retract the cable 141 into the housing 111, the limiting member is rotated in the opposite direction to the second position. After the eccentric wheel of the limiting member no longer presses against the cable 141, the cable 141 can be retracted into the cover 143 under the action of the torsion spring 144 and the turntable 146.

[0056] Both of the above-described limiting components can stop the cable 141, and when combined with the torsion spring 144, they can achieve an automatic winding effect, improving ease of use. In other embodiments, the limiting components can also adopt other structural forms to achieve the same stopping effect on the cable 141.

[0057] It is understandable that the housing 143 of the telescopic cable module 14 is not essential and can be omitted to simplify the structure of the waist-mounted fan 10 and improve its structural compactness. For example, the telescopic cable module 14 includes a torsion spring 144 and a turntable 146. The first free end 1441 of the torsion spring 144 is connected to the turntable 146, 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 wire soldering, or by using a contact pin and a ring conductor to achieve an electrical connection between the cable 141 and the circuit board 15. The cable 141 can be held in place by the turntable 146, and when the user pulls the cable 141, it causes the turntable 146 to rotate relative to the outer casing 111 in one direction, for example, clockwise, to gradually extend out of the outer casing 111. During this process, the torsion spring 144 accumulates elastic potential energy, causing the turntable 146 to tend to rotate counterclockwise. When the user no longer needs to power external electronic devices through the waist fan 10, the torsion spring 144 releases its elastic potential energy, causing the cable 141 extending out of the housing 111 to gradually retract into the housing 111.

[0058] In this embodiment, the telescopic cable module 14 may also include a locking block 147, and the turntable 146 has a locking position 1461 and an unlocking position 1463. During the process of the cable 141 being pulled out of the housing 111, the cable 141 drives the turntable 146 to rotate until the locking position 1461 corresponds to the locking block 147, at which point the locking block 147 restricts the rotation of the turntable 146. As the cable 141 continues to be pulled out of the housing 111 and drives the turntable 146 to rotate, the locking block 147 moves relative to the turntable 146 to the unlocking position 1463, so that the cable 141 gradually rewinds into the housing 111. The locking principle and structure of the locking block 147 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 cooperation of the locking block 147 and the turntable 146 can achieve the locking of the cable 141, and combined with the torsion spring 144, an automatic winding effect can be achieved, improving the convenience of use.

[0059] Of course, in this embodiment, the waist-mounted fan 10 may also include a limiting member that is movably fitted to the outer casing 111. The limiting member has a first position and a second position. In the first position, the cable 141 can be pulled out or retracted into the outer casing 111; in the second position, the limiting member abuts against the cable 141 and restricts the movement of the cable 141 relative to the outer casing 111. The principle and structure of the limiting member in stopping the cable 141, as well as the principle and structure of unlocking the cable 141, can be referred to the foregoing content and will not be repeated here. The structure of the limiting member 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 can also adopt other structural forms to achieve the stopping effect of the cable 141.

[0060] 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.

[0061] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A waist-mounted fan, characterized in that, include: The housing includes an outer shell and a suspension member connected to the outer shell; A fan assembly is disposed within the housing, and the housing has an air outlet for the fan assembly to discharge air. A power module is disposed within the housing and is used to supply power to the fan assembly; as well as A telescopic cable module is disposed within the housing and includes a cable that can extend out of the housing relative to the housing. The cable is used to connect to an external electronic device and to supply power to the external electronic device through the power module. The cable can also be stored within the housing.

2. The waist-mounted fan according to claim 1, characterized in that, The suspension component includes a first hanger and a second hanger. The opening direction of the first hanger is consistent with the opening direction of the air outlet, and the opening direction of the second hanger is opposite to the opening direction of the air outlet.

3. The waist-mounted fan according to claim 2, characterized in that, At least one of the first and second hanging parts is integrally formed or assembled and fixed with the outer shell.

4. The waist-mounted fan according to claim 1, characterized in that, The outer casing includes a first end face and a second end face opposite to each other, and a first side face, a second side face, a third side face, and a fourth side face connected between the first end face and the second end face and connected in sequence. The first side face is connected to the fourth side face and is disposed opposite to the third side face, and the second side face is disposed opposite to the fourth side face. The first end face has the air outlet, and at least one of the first side face and the third side face is provided with the hanging member.

5. The waist-mounted fan according to claim 4, characterized in that, The second side has an opening for the cable to extend and retract, and the fourth side has a locking structure for engaging with one end of the cable that extends out of the housing to form a ring structure for hanging to the human body.

6. The waist-mounted fan according to claim 1, characterized in that, The suspension component is rotatably connected to the outer casing.

7. The waist-mounted fan according to any one of claims 1-6, characterized in that, The telescopic cable module includes a housing and a circuit board disposed within the outer casing. The fan assembly and the power module are electrically connected to the circuit board, respectively. The housing and the circuit board are fixed in relative position, and the cable is telescopically disposed within the housing.

8. The waist-mounted fan according to claim 7, 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. One of the circuit board and the turntable is provided with a contact pin, and the other is provided with an annular conductor. The contact pin contacts and conducts electricity with the annular conductor. The cable is electrically connected to the contact pin or the annular conductor on the turntable. The cable is used to pull the turntable to rotate relative to the housing to gradually extend out of the housing, and the turntable is used to drive the cable extending out of the housing to gradually rewind back into the housing.

9. The waist-mounted fan according to claim 8, characterized in that, The telescopic cable module includes a locking block rotatably connected to the housing. The turntable has a locking position and an unlocking position. During the process of the cable being pulled out of the housing, when the cable drives the turntable to rotate to the locking position corresponding to the locking block, the locking block restricts the rotation of the turntable. When the cable continues to be pulled out of the housing and drives the turntable to rotate, the locking block rotates relative to the housing and moves to the unlocking position, so that the cable is gradually wound back into the housing.

10. The waist-mounted fan according to claim 7, characterized in that, The waist-mounted fan includes a limiting member that is movably fitted to the housing. The limiting member has a first position and a second position. In the first position, the cable can be pulled out or retracted into the housing. In the second position, the limiting member abuts against the cable and restricts the movement of the cable relative to the housing.

11. The waist-mounted fan according to any one of claims 1-6, characterized in that, The telescopic cable module includes a torsion spring and a turntable. The waist-mounted fan includes a circuit board disposed inside the housing. The fan assembly 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 gradually extend out of the housing. The turntable is used to drive the cable extending out of the housing to gradually rewind into the housing.

12. The waist-mounted fan according to claim 11, characterized in that, The telescopic cable module includes a locking block, and the turntable has a locking position and an unlocking position. During the process of the cable being pulled out of the housing, when the cable drives the turntable to rotate to the locking position corresponding to the locking block, the locking block restricts the rotation of the turntable. When the cable continues to be pulled out of the housing and drives the turntable to rotate, the locking block moves relative to the turntable to the unlocking position, so that the cable is gradually wound back into the housing.

13. The waist-mounted fan according to claim 11, characterized in that, The waist-mounted fan includes a limiting member that is movably fitted to the housing. The limiting member has a first position and a second position. In the first position, the cable can be pulled out or retracted into the housing. In the second position, the limiting member abuts against the cable and restricts the movement of the cable relative to the housing.

14. The waist-mounted fan according to any one of claims 1-6, characterized in that, The cable includes a cable body, a connector, and a digital display. The digital display is connected between the free end of the cable body and the connector, and the connector is used to connect to an external electronic device.

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