Handheld miniature fan

Abstract

The utility model relates to a handheld miniature fan. The handheld miniature fan comprises a fan part and a handheld part connected with the fan part, a control circuit board and a power supply battery are arranged in the handheld part; the power supply battery and a motor of the fan part are electrically connected with the control circuit board; the toggle control part is electrically connected with the control circuit board; the toggle control part comprises a control part body and a toggle key; the inner end of the toggle key is arranged in the cavity of the control part body and is rotatably connected with the control part body through a rotating shaft and a spring, the outer end of the toggle key is exposed out of the handheld part, and the air outlet amount of the handheld miniature fan is adjusted by upwards or downwards toggle the toggle key. Compared with the prior art, the handheld miniature fan has the advantages of convenience in speed regulation operation, excellent user experience and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a handheld micro fan. Background Art

[0002] In order to meet people's different needs for air conditioning and cooling in different places in their work and life, in recent years, handheld fans are easy to carry and can be used in different occasions such as office, travel and outdoor, and are deeply loved by people. Therefore, they came into being. However, in the prior art, handheld fans generally use mechanical buttons and set several fixed gears to adjust the fan speed, which is still slightly inconvenient to operate and the user experience is also poor. Summary of the invention

[0003] The technical problem to be solved by the utility model is that, in view of the above-mentioned defects of the prior art, a handheld micro fan with convenient speed regulation operation and good user experience is proposed.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] Provided is a handheld micro fan, comprising a fan part and a handheld part connected to the fan part; the handheld part is provided with a control circuit board and a power battery, the power battery and the motor of the fan part are electrically connected to the control circuit board; further comprising a toggle control part electrically connected to the control circuit board, the toggle control part comprising a control part body and a toggle key; the inner end of the toggle key is placed in a cavity of the control part body and is rotatably connected to the control part body by means of a rotating shaft and a spring, the outer end of the toggle key is exposed outside the handheld part, and the air volume of the handheld micro fan is adjusted by toggling the toggle key upward or downward.

[0006] Further:

[0007] The front end of the fan unit is also provided with a status display screen, which is electrically connected to the control circuit board. When the toggle key is in the middle position, the handheld fan is switched to the display state by pressing the toggle key.

[0008] The control circuit board is provided with an air volume acceleration adjustment circuit and an air volume deceleration adjustment circuit. The air volume acceleration adjustment circuit is turned on by toggling the toggle key upward and pressing it, thereby realizing stepless speed increment adjustment of the air volume of the handheld micro fan; when the key is released, the air volume acceleration adjustment circuit is disconnected; the air volume deceleration adjustment circuit is turned on by toggling the toggle key downward and pressing it, thereby realizing stepless speed decrement adjustment of the air volume of the handheld micro fan; when the key is released, the air volume deceleration adjustment circuit is disconnected.

[0009] The handheld part is also provided with a main power switch.

[0010] The power button of the main power switch is arranged at the rear side corresponding to the toggle key.

[0011] The control circuit board is arranged in the control unit body.

[0012] An inner shell is also provided in the handheld part for accommodating the power battery.

[0013] The power supply battery is a rechargeable battery, and correspondingly, a charging interface is provided on the handheld part.

[0014] The charging interface is a Type-C interface.

[0015] The outer end of the toggle key is also provided with a key cover.

[0016] Compared with the prior art, the handheld micro fan of the utility model has the following beneficial effects: 1. The setting of the toggle control part and the matching wind volume increasing circuit and wind volume decreasing circuit can realize stepless speed adjustment of the fan wind volume with simple operation, effectively improving the user experience; 2. The main power switch is set to effectively avoid losses and risks caused by accidental touching of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional exploded schematic diagram of the handheld micro fan of the utility model;

[0018] Figure 2 is a schematic diagram of the three-dimensional structure of the handheld micro fan;

[0019] Figure 3 is one of the cross-sectional structural schematic diagrams of the handheld micro fan, illustrating a state where the toggle key is toggled upward;

[0020] Figure 4 yes Figure 3 A magnified schematic diagram of part A in FIG.

[0021] Figure 5 is a second schematic cross-sectional view of the handheld micro fan, showing a state where the toggle key is toggled downward;

[0022] Figure 6 yes Figure 5 A magnified schematic diagram of part B in FIG.

[0023] Figure 7 is the third schematic cross-sectional view of the handheld micro fan, showing a state where the toggle key is in the middle position and pressed;

[0024] Figure 8 yes Figure 7 The enlarged schematic diagram of the C part in FIG.

[0025] Fig. 9 The present invention is a circuit principle diagram of the toggle control unit of the handheld micro fan. DETAILED DESCRIPTION

[0026] Now, in conjunction with the accompanying drawings, a preferred embodiment of the present utility model is described in detail.

[0027] The utility model is a handheld miniature fan. Figures 1 to 9 As shown, it includes a fan unit 10 and a handheld unit 20 connected to the fan unit 10; a control circuit board 30 and a power battery 50 are arranged in the handheld unit 20, and the power battery 50 and the motor of the fan unit 10 are electrically connected to the control circuit board 30; it also includes a toggle control unit 60 electrically connected to the control circuit board 30, and the toggle control unit 60 includes a control unit body 61 and a toggle key 62; the inner end of the toggle key 62 is placed in the cavity of the control unit body 61, and is rotatably connected to the control unit body 61 by means of a rotating shaft 63 and a spring (not shown in the figure), and the outer end of the toggle key 62 is exposed from the handheld unit 20, and the air volume of the handheld micro fan is adjusted by toggling the toggle key 62 upward or downward.

[0028] In the utility model, Figures 1 to 9 As shown, the front end of the fan unit 10 is also provided with a status display screen 11, and the status display screen 11 is electrically connected to the control circuit board 30; Figure 7 , Figure 8 and Fig. 9 As shown, Fig. 9 The circuit S2 corresponding to the middle switch K2 is electrically connected to the status display circuit in the control circuit board 30. When the toggle key is in the middle position ( Figure 7 and Figure 8 As shown in the state), press the toggle key 62, the switch K2 is closed (corresponding to Figure 8 In the circuit, contact a is connected to contact c), line S2 is turned on, and the status display circuit in the control circuit board 30 receives the instruction to start working, thereby adjusting the handheld fan to switch to the display state (the status display screen 11 displays the fan power, wind speed and other parameter indicators).

[0029] In the utility model, the control circuit board 30 is provided with an air volume acceleration adjustment circuit (not shown in the figure) and an air volume deceleration adjustment circuit (not shown in the figure). Figures 3 to 6 as well as Fig. 9 As shown, Fig. 9 In the embodiment, the switch K1 corresponds to the circuit S3 and is electrically connected to the air volume acceleration adjustment circuit in the control circuit board 30, and the switch K3 corresponds to the circuit S1 and is electrically connected to the air volume deceleration adjustment circuit in the control circuit board 30; the toggle key 62 is pushed upward and pressed, and the switch K1 is closed (corresponding to Figure 4In the embodiment, contact a is connected to contact b), line S3 is turned on, the air volume acceleration adjustment circuit is turned on and starts to work upon receiving the instruction, thereby realizing stepless speed increment adjustment of the air volume of the handheld mini fan. When the pressing is released, switch K1 is disconnected and the air volume acceleration adjustment circuit is disconnected; the toggle key 62 is pushed down and pressed, switch K3 is closed (corresponding to Figure 6 In the embodiment, contact a is connected to contact d), line S1 is turned on, the air volume deceleration adjustment circuit is turned on and starts working upon receiving the instruction, thereby realizing stepless speed reduction adjustment of the air volume of the handheld micro fan. When the press is released, switch K3 is disconnected and the air volume deceleration adjustment circuit is disconnected.

[0030] In order to avoid accidental collision by the user, in some embodiments of the present invention, the handheld portion 20 is also provided with a main power switch. When using the fan, the main power switch must be turned on before the toggle control portion 60 can be operated; preferably, in order to better meet people's operating habits, the power button 21 of the main power switch is arranged on the rear side corresponding to the toggle key 62 (such as Figures 1 to 8 as shown).

[0031] like Figures 1 to 8 As shown, in some embodiments of the utility model, an inner shell 22 is further provided in the handheld part 20 for accommodating the power battery 50; the power battery 50 is a rechargeable battery, such as a lithium battery, etc. Correspondingly, a charging interface (not shown in the figure) is provided on the handheld part. Preferably, the charging interface is a Type-C interface, and of course other USB type interfaces can also be used.

[0032] In some embodiments of the present invention, the control circuit board 30 is disposed in the control unit body 61, which simplifies the circuit connection and saves costs.

[0033] In some embodiments of the present invention, Figures 1 to 8 As shown, the outer end of the toggle key 62 is also provided with a key cover 65, which makes the fan beautiful and enhances the hand feel.

[0034] In the utility model, the control principle of the fan motor, and the stepless speed regulation principle adopted by the air volume increasing speed regulating circuit and the air volume decreasing speed regulating circuit are all mature existing technologies and will not be described in detail here.

[0035] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some of the technical features therein can be replaced by equivalents; and these modifications and replacements should all fall within the scope of protection of the claims attached to the present utility model.

Claims

1. A handheld miniature fan, comprising a fan unit and a handheld unit connected to the fan unit; a control circuit board and a power battery are arranged in the handheld unit, and the power battery and the motor of the fan unit are both electrically connected to the control circuit board; characterized in that: The invention also includes a toggle control part electrically connected to the control circuit board, the toggle control part includes a control part body and a toggle key; the inner end of the toggle key is placed in the cavity of the control part body and is rotatably connected to the control part body by means of a rotating shaft and a spring, the outer end of the toggle key is exposed to the hand-held part, and the air volume of the hand-held micro fan is adjusted by toggling the toggle key upward or downward; an air volume acceleration adjustment circuit and an air volume deceleration adjustment circuit are provided on the control circuit board, the toggle key is toggled upward and pressed to turn on the air volume acceleration adjustment circuit to achieve stepless speed increment adjustment of the air volume of the hand-held micro fan, and when the key is released, the air volume acceleration adjustment circuit is disconnected; the toggle key is toggled downward and pressed to turn on the air volume deceleration adjustment circuit to achieve stepless speed decrement adjustment of the air volume of the hand-held micro fan, and when the key is released, the air volume deceleration adjustment circuit is disconnected.

2. The handheld mini fan according to claim 1, characterized in that: The front end of the fan unit is also provided with a status display screen, which is electrically connected to the control circuit board. When the toggle key is in the middle position, the handheld micro fan is switched to the display state by pressing the toggle key.

3. The handheld mini fan according to any one of claims 1 to 2, characterized in that: The handheld part is also provided with a main power switch.

4. The handheld mini fan according to claim 3, characterized in that: The power button of the main power switch is arranged at the rear side corresponding to the toggle key.

5. The handheld mini fan according to claim 3, characterized in that: The control circuit board is arranged in the control unit body.

6. The handheld mini fan according to claim 3, characterized in that: An inner shell is also provided in the handheld part for accommodating the power battery.

7. The handheld mini fan according to claim 3, characterized in that: The power supply battery is a rechargeable battery, and correspondingly, a charging interface is provided on the handheld part.

8. The handheld mini fan according to claim 7, characterized in that: The charging interface is a Type-C interface.

9. The handheld mini fan according to claim 3, characterized in that: The outer end of the toggle key is also provided with a key cover.

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