A hand-held fan that is easy to operate

Abstract

The utility model discloses a handheld fan convenient to operation, including the head with the handheld of perpendicular to the head blowing direction of blowing module, handheld department is close to the position of head and is equipped with a table space, the table space has the opening to the head and the opening to the user's use direction, the table space is equipped with the knob of lateral autorotation, the axis of knob is perpendicular to the head blowing direction and the bottom wall of table space. The utility model has the advantage that the unnatural bending of the user's knuckle when operating the knob can be avoided.

Description

Technical Field

[0001] This utility model belongs to the field of handheld fan technology, and in particular relates to a handheld fan that is easy to operate. Background Technology

[0002] A fan is an electrical appliance that uses an electric motor to drive the fan blades to rotate, thereby accelerating the circulation of air. Fans are mainly used for cooling and ventilating the air.

[0003] Chinese patent application No. 202321579734.0 discloses a handheld fan's air delivery device and a handheld fan, including an inner shell, an outer shell, a fan assembly, a mounting bracket disposed on the handheld part, a second circuit board, and a speed control knob assembly. The inner shell forms an air passage, an air inlet communicating with one side of the air passage, and an air outlet communicating with the other side of the air passage. At least a portion of the fan assembly is disposed in the air passage. The speed control knob assembly is disposed on the mounting bracket and connected to the second circuit board. The speed control knob assembly can be used to adjust the rotation speed of the fan blades in the fan assembly to control the wind speed. For example, rotating the knob in the speed control knob assembly can adjust the fan speed; pressing the knob in the speed control knob assembly can check the battery level.

[0004] In the above technical solution, the speed of the fan blades in the fan assembly is adjusted by rotating the knob. However, in the above technical solution, since the rotation direction of the knob is along the XZ plane, its axis is perpendicular to the axis of the handheld fan handle. This causes the user to bend their fingers when rotating the knob. This action mode is contrary to ergonomics and is more strenuous and inconvenient to use. Summary of the Invention

[0005] To address the shortcomings of existing technologies, a handheld fan that is easy to operate is provided.

[0006] This utility model is achieved using the following technical solution:

[0007] An easy-to-operate handheld fan includes a head with a blowing module and a handheld part perpendicular to the blowing direction of the head. A table space is provided on the handheld part near the head. The table space has an opening that faces both the head and the user's direction. A knob that can rotate laterally is provided in the table space. The axis of the knob is perpendicular to the blowing direction of the head and the bottom wall of the table space.

[0008] When the user needs to use the handheld fan, they can swing their thumb laterally in the first direction to rotate the knob laterally, thus turning the knob in the XY plane to activate the blowing module and change the wind speed. When the handheld fan is not needed, swinging the thumb laterally in the second direction will rotate the knob back to the initial angle, thus turning off the fan.

[0009] The knob that needs to be turned to change the wind speed can be one revolution or multiple revolutions.

[0010] Preferably, a support arm is provided between the head and the hand-held part, one end of the support arm is fixedly connected to the top of the hand-held part, and the other end of the support arm is hinged to the outer surface of the head.

[0011] The head is supported by a support arm, which separates the head from the hand, thus creating a rotation space for the head to turn.

[0012] The other end of the support arm can be hinged to the horizontal side of the head or to the vertical bottom of the head.

[0013] Preferably, the handheld part is provided with a potentiometer that can be electrically connected to the power supply unit, and the knob is sleeved on the rotation shaft of the potentiometer and fixed coaxially therewith, so that the potentiometer can be operated by turning the knob.

[0014] Preferably, the potentiometer has a linear groove at one end of its rotating shaft near the head, the knob is a hollow structure, and the knob has a crossbar inside that can engage with the linear groove.

[0015] By embedding the crossbar into the linear groove, a key connection is formed between the knob and the potentiometer's rotation shaft, thereby ensuring that the potentiometer's rotation shaft and the knob rotate synchronously and preventing slippage between them.

[0016] Preferably, the knob has an annular stop located on the circumferential side of the crossbar. The knob is sleeved on the rotation shaft of the potentiometer through the annular stop. The crossbar is located at the diameter of the annular stop, and the length of the crossbar is the same as the diameter of the annular stop. The annular stop is used to increase the torque between the knob and the crossbar.

[0017] Preferably, the outer circumferential surface of the annular enclosure and the inner circumferential surface of the knob are further provided with reinforcing ribs arranged in a ring array.

[0018] The reinforcing ribs ensure the structural strength between the ring-shaped enclosure and the outer shell formed by the knob, preventing elastic deformation of the outer shell formed by the knob and thus ensuring the efficiency of torque transmission.

[0019] Preferably, the bottom wall of the platform space is provided with a support ring protruding towards the head, thereby isolating and protecting the rotating shaft of the potentiometer.

[0020] Preferably, the end of the reinforcing rib away from the head is provided with a groove for engaging with the axial end face of the support ring. This utilizes the friction between the side wall of the groove and the support ring to prevent the knob from sliding axially with the rotation shaft of the potentiometer, thus preventing the knob from falling off.

[0021] Preferably, the outer circumference of the knob is provided with a plurality of raised strips arranged in a ring, which can increase the circumferential friction between the knob and the user's finger.

[0022] The protruding strips form a friction part on the outer surface of the knob. The protruding strips can be outwardly protruding strip structures parallel to the knob axis, or they can be formed by combining the sidewalls of two adjacent grooves parallel to the knob axis, thereby increasing the circumferential friction between the knob and the user's fingers.

[0023] Preferably, the outer circumference of the knob is provided with a plurality of raised strips arranged in a ring, which can increase the frictional force between the knob and the user's finger in the circumferential and axial directions.

[0024] The raised strip can be a strip structure that is gradually inclined along the axis of the knob, or it can be formed by combining the sidewalls of two adjacent grooves that are gradually inclined along the axis of the knob, forming an oblique anti-slip texture, thereby increasing the friction between the knob and the user's fingers in the circumferential and axial directions, and dispersing the force on the user's hand during use, reducing the user's discomfort.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] By setting the knob axis parallel to the handheld part axis, the direction of thumb swing coincides with the tangential direction of the knob rotation plane. Compared with a knob that rotates vertically along the XZ plane, this avoids unnatural bending of the user's knuckles when operating the knob, allowing the user to achieve precise airflow control with an ergonomic thumb sweeping motion, thus improving the user experience. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a handheld fan that is easy to operate according to this utility model;

[0028] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0029] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0030] Figure 4 This is a structural schematic diagram of the knob in this utility model viewed from below;

[0031] Figure 5 This is a schematic diagram of the internal structure of this utility model;

[0032] Figure 6 for Figure 5 A schematic diagram of the exploded structure in the specified state.

[0033] Reference numerals: 11. Head; 111. Blower module; 12. Support arm; 13. Handheld part; 14. Table space; 15. Support ring; 16. Knob; 161. Raised strip; 17. Crossbar; 18. Circular enclosure; 19. Reinforcing rib; 20. Slot; 21. Potentiometer; 22. Rotating shaft; 23. Power supply unit; 24. Circuit board; 25. Linear groove. Detailed Implementation

[0034] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0035] Example 1

[0036] like Figure 1 — Figure 6 As shown, this embodiment discloses an easy-to-operate handheld fan, including a head 11 with a blowing module 111 and a handheld part 13 perpendicular to the blowing direction of the head 11. A support arm 12 is provided between the head 11 and the handheld part 13. One end of the support arm 12 is fixedly connected to the top of the handheld part 13, and the other end of the support arm 12 is hinged to the outer surface of the head 11. Due to the actual volume limitation of the blowing module 111, the head 11 has a cylindrical structure, and the handheld part 13 is located below the middle section of the head 11 to maintain the overall structural center of gravity of the handheld fan.

[0037] A table space 14 is provided near the head 11 on the handheld part 13. The table space 14 has an opening that faces both the head 11 and the user's direction. A knob 16 that can rotate horizontally is provided in the table space 14. The circumferential sidewall of the table space 14 is an arc surface. The arc surface curvature matches the outer arc surface curvature of the knob 16. The axis of the knob 16 is perpendicular to the air blowing direction of the head 11 and the bottom wall of the table space 14. The knob 16 can rotate in the XY plane.

[0038] The handheld part 13 has a built-in power supply unit 23, circuit board 24 and potentiometer 21. The power supply unit 23, circuit board 24 and potentiometer 21 are all the same as the existing technology structure. The power supply unit 23 and potentiometer 21 are electrically connected to the circuit board 24. The knob 16 is sleeved on the rotation shaft 22 of the potentiometer 21 and is fixed coaxially with it.

[0039] The rotating shaft 22 has a linear groove 25 at one end near the head 11. The knob 16 is a hollow structure, and the knob 16 has a crossbar 17 that can be fitted into the linear groove 25.

[0040] The knob 16 has an annular stop 18 located on the circumferential side of the crossbar 17. The knob 16 is sleeved on the rotation shaft 22 of the potentiometer 21 through the annular stop 18. The crossbar 17 is located at the diameter of the annular stop 18. The length of the crossbar 17 is the same as the diameter of the annular stop 18. The annular stop 18 is used to increase the torque between the knob 16 and the crossbar 17.

[0041] A ring array of reinforcing ribs 19 is provided between the outer circumference of the ring enclosure 18 and the inner circumference of the knob 16.

[0042] The bottom wall of the countertop space 14 is provided with a support ring 15 protruding towards the head 11.

[0043] The end of the reinforcing rib 19 away from the head 11 has a groove 20 for engaging with the axial end face of the support ring 15. The groove 20 can be located inside the reinforcing rib 19 and has a notch-like structure; or it can be located at the end of the reinforcing rib 19 near the knob 16 and is formed by a combination of a vertical surface, a horizontal surface and the inner circumferential surface of the knob 16.

[0044] The outer circumferential surface of the knob 16 is provided with a ring array of several protrusions 161. The protrusions 161 are strip-shaped structures that protrude outward and are parallel to the axis of the knob 16. The protrusions 161 can increase the circumferential friction between the knob 16 and the user's finger.

[0045] When the user needs to use the handheld fan, the knob 16 rotates laterally by swinging the thumb in the first direction, causing the knob 16 to rotate in the XY plane. The knob 16 drives the rotating shaft 22 to rotate through the horizontal bar 17 and the annular guard 18. The rotating shaft 22 controls the power supply unit 23 to supply power to the blower module 111 to start it up. When the knob 16 is rotated in the first direction, the potentiometer 21 controls the blower module 111 to increase its speed, thereby increasing the air volume and starting the blower module 111 and changing the wind speed. When the handheld fan is not needed, the knob 16 is rotated in the second direction to reverse, so that the knob 16 can be rotated back to the initial angle, thereby turning off the fan.

[0046] Example 2

[0047] The difference between this embodiment and Embodiment 1 is that: a plurality of protrusions 161 are arranged in a ring array on the outer circumferential surface of the knob 16. The protrusions 161 are strip-shaped structures that are gradually inclined along the axial direction of the knob 16. The protrusions 161 can increase the frictional force generated between the knob 16 and the user's finger in the circumferential and axial directions.

Claims

1. A handheld fan that is easy to operate, characterized in that: The device includes a head with a blower module and a handheld part perpendicular to the blower direction of the head. A table space is provided near the head on the handheld part. The table space has an opening that faces both the head and the user's direction of use. A knob that can rotate laterally is provided in the table space. The axis of the knob is perpendicular to the blower direction of the head and the bottom wall of the table space.

2. The easy-to-operate handheld fan according to claim 1, characterized in that: A support arm is provided between the head and the hand-held part. One end of the support arm is fixedly connected to the top of the hand-held part, and the other end of the support arm is hinged to the outer surface of the head.

3. A handheld fan that is easy to operate according to claim 1 or 2, characterized in that: The handheld part is equipped with a potentiometer that can be electrically connected to the power supply unit, and the knob is sleeved on the rotating shaft of the potentiometer and fixed coaxially with it.

4. The easy-to-operate handheld fan according to claim 3, characterized in that: The potentiometer has a linear groove at one end of its rotating shaft near the head. The knob is a hollow structure, and a crossbar is provided inside the knob that can be engaged with the linear groove.

5. A handheld fan for easy operation according to claim 4, characterized in that: The knob has an annular stop located on the circumferential side of the crossbar. The knob is fitted onto the rotation shaft of the potentiometer through the annular stop. The crossbar is located at the diameter of the annular stop, and the length of the crossbar is the same as the diameter of the annular stop. The annular stop is used to increase the torque between the knob and the crossbar.

6. A handheld fan for easy operation according to claim 5, characterized in that: A ring-shaped array of reinforcing ribs is also provided between the outer circumferential surface of the ring-shaped enclosure and the inner circumferential surface of the knob.

7. A handheld fan for easy operation according to claim 6, characterized in that: The bottom wall of the platform space is provided with a support ring that protrudes toward the head.

8. A handheld fan that is easy to operate according to claim 7, characterized in that: The reinforcing rib has a groove at the end away from the head for engaging with the axial end face of the support ring.

9. A handheld fan that is easy to operate according to claim 8, characterized in that: The outer circumference of the knob is provided with a ring array of several raised strips, which can increase the circumferential friction between the knob and the user's finger.

10. A handheld fan that is easy to operate according to claim 8, characterized in that: The outer circumference of the knob is provided with a ring array of several raised strips, which can increase the frictional force between the knob and the user's finger in the circumferential and axial directions.

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