Fan capable of realizing multi-stage stable speed regulation

Abstract

The utility model discloses a fan capable of multi-stage stable speed regulation, which comprises a shell, a driving fan blade group, a circuit board assembly and a storage battery are arranged in the shell, the driving fan blade group and the storage battery are both electrically connected with the circuit board assembly, the circuit board assembly is electrically connected with a swing reset switch, and the swing reset switch is electrically connected with the shell. A switch through hole is formed in the position, corresponding to the swing reset switch, of the shell, a switch panel covers the switch through hole in a sliding mode, a push rod socket is arranged on the side, facing the swing reset switch, of the switch panel, a push rod is arranged at the position, located at the symmetric axis of a body, of the swing reset switch, and the push rod is inserted into the push rod socket. According to the utility model, the multi-stage speed regulation is realized, and the stability of the speed regulation operation and the stability of the service life of the switch are also ensured at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a fan capable of multi-stage stable speed regulation. Background Art

[0002] The speed of current fans is adjusted either by pressing a button or by rolling an encoder wheel. The button-type speed adjustment often causes accidental touches or failures. In addition, when used for multi-level adjustment, the fan is easily damaged and scrapped due to the increased number of button presses. The encoder wheel method often causes insensitive and inaccurate speed adjustment, which seriously affects the user experience. Utility Model Content

[0003] The purpose of the utility model is to provide a fan with multi-stage stable speed regulation, which not only realizes multi-stage speed regulation but also ensures the stability of speed regulation operation and the stability of switch service life, thereby solving the problems raised by the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fan with multi-stage stable speed regulation, comprising a shell, wherein a fan blade group, a circuit board assembly and a battery are arranged in the shell, the fan blade group and the battery are electrically connected to the circuit board assembly, the circuit board assembly is electrically connected to a swing reset switch, a switch through hole is opened on the shell at the position corresponding to the swing reset switch, a sliding cover on the switch through hole is provided with a switch panel, a push rod socket is provided on the switch panel facing the side of the swing reset switch, a push rod is provided at the position of the symmetry axis of the swing reset switch body, the push rod is inserted in the push rod socket, and the initial position of the swing reset switch push rod is the position of its symmetry axis.

[0005] Preferably, the switch panel is an arc-shaped plate, and a protrusion extends outward from the center of the outer wall of the arc-shaped plate to form a push-dial key.

[0006] Preferably, the swing reset switch can swing left and right relative to its symmetry axis under the action of external force. When it swings to the left, it triggers the left switch signal, and when it swings to the right, it triggers the right switch signal. When the external force is released, it automatically resets to the initial position.

[0007] Preferably, the circuit board assembly is electrically connected to a power switch and a USB interface, and the power switch and the USB interface are arranged in a through hole preset in the shell and extend outward from the through hole.

[0008] Preferably, an air duct shell is formed at the upper end of the shell, and a fan handle is formed at the lower end, the air duct is sleeved inside the air duct shell, a driving fan blade group is installed in the air duct, and the two ends of the air duct are respectively an air inlet and an air outlet, the driving fan blade group guides the air at the air inlet to flow through the air duct and then blown out from the air outlet, a wind cutting booster blade is provided in the air duct on the side of the driving fan blade group facing the air outlet, a straightening blade is provided in the air duct shell on the side of the cutting booster blade away from the driving fan blade group, a wind gathering booster hood is provided on the side of the straightening blade away from the cutting booster blade, the cutting booster blade is used to cut and compress the airflow blown out by the driving fan blade group to achieve a boosting effect, the straightening blade is used to organize the airflow blown out from the cutting booster blade so that the airflow is blown out in a direction as parallel as possible to the axis of the air duct, and the wind gathering booster hood is used to compress the diameter of the air flow beam to increase the wind pressure.

[0009] Preferably, the diameter of the inner wall of the wind-gathering and pressurizing cover gradually decreases from the end close to the rectifying blade to the end away from the rectifying blade.

[0010] Preferably, an electrical cavity with an opening toward the wind-gathering and boosting cover is provided in the middle of the rectifying blade, a digital display screen is provided in the electrical cavity, and a digital display screen mask is installed at the cavity opening of the electrical cavity, and the digital display screen mask is a light-transmitting cover.

[0011] Preferably, the fan handle includes a handle front shell, a handle rear shell and a bottom shell which are enclosed and connected to each other, and a cavity is formed between the handle front shell, the handle rear shell and the bottom shell, and a circuit board assembly and a battery are arranged in the cavity.

[0012] Preferably, an anti-slip pad is provided on the bottom surface of the bottom shell, and a climbing buckle is provided on the bottom side of the fan handle for rotation connection.

[0013] Preferably, an air inlet cover is assembled at the air inlet of the air duct through a port fastener, and the air inlet cover is a hollow cover.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model uses a swing reset switch with an automatic reset feature to perform multi-stage gear adjustment and speed regulation, which not only can achieve precise operation, one shift one gear, no shift when not shifting, and ensure that there will be no accidental touch or control failure, thereby ensuring the stability of the speed regulation operation. In addition, the flexible reset feature of the swing reset switch is used in the multi-stage gear adjustment application scenario to ensure the service life of the switch, making the product durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model structure explosion Figure 1 ;

[0017] Figure 2 The utility model structure explosion Figure 2 ;

[0018] Figure 3 This is a three-dimensional diagram of the appearance of the utility model;

[0019] Figure 4 This is the front view of the swing reset switch of the utility model.

[0020] In the figure: 1 wind-collecting and boosting cover; 2 digital display screen mask; 3 digital display screen; 4 switch panel; 5 push-dial key; 6 air duct housing; 7 rectifying blades; 8 electrical chamber; 9 switch through hole; 10 handle front shell; 11 air duct; 12 wind-cutting and boosting blades; 13 circuit board assembly; 14 power switch; 15 USB interface; 16 rocking reset switch; 17 push rod; 18 battery; 19 drive fan blade assembly; 20 air inlet cover; 21 port fastener; 22 handle rear shell; 23 bottom shell; 24 anti-slip pad; 25 climbing buckle; 26 fan handle; 27 push rod socket. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-4 A fan with multi-stage stable speed regulation includes a housing, a fan blade group 19, a circuit board assembly 13 and a battery 18 are arranged in the housing, the fan blade group 19 and the battery 18 are electrically connected to the circuit board assembly 13, and the circuit board assembly 13 is electrically connected to a swing reset switch 16. A switch through hole 9 is opened on the housing at a position corresponding to the swing reset switch 16. A sliding cover on the switch through hole 9 is provided with a switch panel 4. A push rod socket 27 is provided on the side of the switch panel 4 facing the swing reset switch 16. The swing reset switch 16 is located at the symmetrical axis of its body. A push rod 17 is provided at the position, and the push rod 17 is inserted into the push rod socket 27. The initial position of the push rod 17 of the swing reset switch 16 is the position of its symmetry axis OO'. The switch panel 4 is an arc-shaped plate, and a protrusion extends outward from the center position of the outer wall of the arc-shaped plate to form a push key 5. When an external force pushes the push key 5 to drive the switch panel 4 to slide, the swing reset switch 16 can swing left and right relative to its symmetry axis OO' under the action of external force. When it swings to the left, it triggers the left switch signal. When it swings to the right, it triggers the right switch signal. When the external force is released, it automatically resets to the initial position.

[0023] The circuit board assembly 13 is electrically connected and provided with a power switch 14 and a USB interface 15. The power switch 14 and the USB interface 15 are arranged in a preset through hole of the shell and extend outward from the through hole. The power switch 14 is used to cut off or connect the fan working circuit. The USB interface 15 can charge the battery 18 to supplement power when connected to an external power supply using a charging cable.

[0024] The upper end of the shell forms an air duct shell 6, and the lower end forms a fan handle 26. The air duct shell 6 is internally provided with an air duct 11, and a drive fan blade group 19 is installed in the air duct 11. The two ends of the air duct 11 are respectively an air inlet and an air outlet. The drive fan blade group 19 guides the air at the air inlet to flow through the air duct 11 and then blows out from the air outlet. The air inlet of the air duct 11 is equipped with an air inlet cover 20 through a port fastener 21. The air inlet cover 20 is a hollow cover. A cutting wind booster blade 12 is provided on the side of the drive fan blade group 19 facing the air outlet in the air duct 11. The boost blade 12 is provided with a straightening blade 7 on the side away from the drive fan blade group 19, and the straightening blade 7 is provided with a wind gathering boost cover 1 on the side away from the wind cutting boost blade 12. The wind cutting boost blade 12 is used to cut and compress the wind flow blown out of the drive fan blade group 19 to achieve a boosting effect. The straightening blade 7 is used to straighten the wind flow blown out from the wind cutting boost blade 12 so that the wind flow is blown out in a direction as parallel to the axis of the air duct as possible. The wind gathering boost cover 1 is used to compress the diameter of the wind flow beam to increase the wind pressure. The inner wall diameter of the wind gathering boost cover 1 gradually decreases from the end close to the straightening blade 7 to the end away from the straightening blade 7.

[0025] An electrical chamber 8 with an opening toward the wind-gathering and boosting cover 1 is provided in the middle of the rectifying blade 7, and a digital display screen 3 is provided in the electrical chamber 8. The opening of the electrical chamber 8 is covered with a digital display screen mask 2, and the digital display screen mask 2 is a light-transmitting cover. The digital display screen 3 is electrically connected to the circuit board assembly 13 and can be used to display the working gear of the fan blade group 19 and the real-time power of the battery 18.

[0026] The fan handle 26 includes a handle front shell 10, a handle rear shell 22 and a bottom shell 23 that are enclosed and connected to each other. A cavity is formed between the handle front shell 10, the handle rear shell 22 and the bottom shell 23. A circuit board assembly 13 and a battery 18 are arranged in the cavity. An anti-slip pad 24 is provided on the bottom surface of the bottom shell 23. A climbing buckle 25 is provided on the bottom side of the fan handle 26 for rotation connection. The climbing buckle 25 can be used to hang the fan body on a backpack strap or a belt when traveling, making it convenient to carry the fan body with you.

[0027] Usage: To use the fan, first flip the power switch 14 to connect the working circuit. Then, adjust the speed by pushing the switch panel 4. For example, push the switch panel 4 upward once and then release it, allowing it to automatically return to its initial position to increase the speed by one gear. Repeat this operation to increase the speed multiple times. Once the gear reaches the maximum, subsequent gear-up operations will be invalid. Downshifting is done in the same way, except that the switch panel 4 is pushed in a different direction. To downshift, push the switch panel 4 downward.

[0028] To sum up: the utility model uses a swing reset switch 16 with automatic reset characteristics to perform multi-level gear adjustment and speed regulation, which not only can achieve precise operation, one-touch one-gear change, no-shifting no-gear change, ensure that there will be no accidental touch or control failure, thereby ensuring the stability of the speed regulation operation, and the flexible reset feature of the swing reset switch 16 used in the multi-level gear adjustment application scenario is conducive to ensuring the service life of the switch, making the product durable.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fan capable of multi-stage stable speed regulation, comprising a housing, wherein a fan blade assembly (19), a circuit board assembly (13) and a battery (18) are arranged in the housing, wherein the fan blade assembly (19) and the battery (18) are both electrically connected to the circuit board assembly (13), and wherein: The circuit board assembly (13) is electrically connected to a swing reset switch (16), a switch through hole (9) is provided on the housing at a position corresponding to the swing reset switch (16), a switch panel (4) is provided on a sliding cover on the switch through hole (9), a push rod socket (27) is provided on the switch panel (4) facing the swing reset switch (16), a push rod (17) is provided at a position of a symmetric axis of the swing reset switch (16), the push rod (17) is inserted into the push rod socket (27), and the initial position of the push rod (17) of the swing reset switch (16) is the position of its symmetric axis.

2. A fan capable of multi-stage stable speed regulation according to claim 1, characterized in that: The switch panel (4) is an arc-shaped plate, and a protrusion extends outward from the center of the outer wall of the arc-shaped plate to form a push-dial key (5).

3. The fan with multi-stage stable speed regulation according to claim 1, characterized in that: The swing reset switch (16) can swing left and right relative to its symmetry axis under the action of external force. When it swings to the left, it triggers the left switch signal, and when it swings to the right, it triggers the right switch signal. When the external force is released, it automatically resets to the initial position.

4. The fan capable of multi-stage stable speed regulation according to claim 1, characterized in that: The circuit board assembly (13) is electrically connected to a power switch (14) and a USB interface (15); the power switch (14) and the USB interface (15) are arranged in a through hole preset in the housing and extend outward from the through hole.

5. The fan capable of multi-stage stable speed regulation according to claim 1, characterized in that: The upper end of the shell forms an air duct shell (6), and the lower end forms a fan handle (26). The air duct shell (6) is provided with an air duct (11) inside. A driving fan blade group (19) is installed in the air duct (11). The two ends of the air duct (11) are respectively an air inlet and an air outlet. The driving fan blade group (19) guides the air at the air inlet to flow through the air duct (11) and blows out from the air outlet. A cutting air boost blade (12) is provided on the side of the driving fan blade group (19) facing the air outlet in the air duct (11). The cutting air boost blade (12) is provided in the air duct shell (6). A straightening blade (7) is provided on the side of the boosting blade (12) away from the fan blade group (19); a wind-gathering boosting cover (1) is provided on the side of the straightening blade (7) away from the wind-cutting boosting blade (12); the wind-cutting boosting blade (12) is used to cut and compress the wind flow blown out of the fan blade group (19) to achieve a boosting effect; the straightening blade (7) is used to straighten the wind flow blown out from the wind-cutting boosting blade (12) so that the wind flow is blown out in a direction as parallel to the axis of the air duct as possible; and the wind-gathering boosting cover (1) is used to compress the diameter of the wind flow beam to increase the wind pressure.

6. The fan capable of multi-stage stable speed regulation according to claim 5, characterized in that: The diameter of the inner wall of the wind-gathering and pressurizing cover (1) gradually decreases from the end close to the rectifying blade (7) to the end away from the rectifying blade (7).

7. The fan capable of multi-stage stable speed regulation according to claim 5, characterized in that: An electrical chamber (8) with an opening toward one side of the wind-gathering and boosting cover (1) is provided in the middle of the rectifying blade (7), a digital display screen (3) is provided in the electrical chamber (8), and a digital display screen mask (2) is installed at the opening of the electrical chamber (8), and the digital display screen mask (2) is a light-transmitting cover.

8. The fan capable of multi-stage stable speed regulation according to claim 5, characterized in that: The fan handle (26) comprises a handle front shell (10), a handle rear shell (22) and a bottom shell (23) which are enclosed and connected to each other; a cavity is formed between the handle front shell (10), the handle rear shell (22) and the bottom shell (23); a circuit board assembly (13) and a battery (18) are arranged in the cavity.

9. The fan capable of multi-stage stable speed regulation according to claim 8, characterized in that: An anti-slip pad (24) is provided on the bottom surface of the bottom shell (23), and a climbing buckle (25) is provided on the bottom side of the fan handle (26) for rotational connection.

10. The fan capable of multi-stage stable speed regulation according to claim 5, characterized in that: An air inlet cover (20) is assembled at the air inlet of the air duct (11) via a port fastener (21), and the air inlet cover (20) is a hollow cover.

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