A smart handheld fan that can automatically adjust the wind speed according to the ambient temperature.

Abstract

This utility model belongs to the field of handheld fan technology and discloses an intelligent handheld fan that can automatically adjust the wind speed according to the ambient temperature. The fan includes a fan handle, a base, and a housing. The housing is fixed to the upper side of the fan handle, and the base is detachably installed on the lower side of the fan handle. The fan handle contains components such as a temperature sensor and a touch sensor. Through the cooperation of the touch sensor and a latching assembly, the fan automatically turns on when picked up and immediately turns off when released. When the fan is placed on a table, it can be turned off simply by tapping it, avoiding frequent button operations and significantly simplifying the fan start-up and shutdown process. Furthermore, the temperature sensor detects the ambient temperature and automatically adjusts the fan speed, enabling the fan to intelligently change its wind output according to the usage environment, achieving a more convenient and efficient wind control method.

Description

Technical Field

[0001] This utility model relates to the technical field of handheld fans, and in particular to an intelligent handheld fan that can automatically adjust the wind speed according to the ambient temperature. Background Technology

[0002] Fans are one of the most frequently used electrical appliances in daily life. They not only accelerate air circulation but also bring coolness. However, due to their large size, traditional fans can only be used indoors. Currently, miniaturized handheld fans have emerged, which are significantly smaller and lighter than traditional fans, making them particularly suitable for carrying around.

[0003] Most handheld fans today still use buttons as switches to control their operation, lacking a high level of intelligence. Switching between fan speeds requires multiple button presses, making the process cumbersome. Furthermore, current handheld fans cannot automatically adjust fan speed based on ambient temperature, necessitating frequent manual adjustments and failing to provide optimal airflow in response to changes in external temperature. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an intelligent handheld fan that can automatically adjust the wind speed according to the ambient temperature. This aims to solve the technical problems of inconvenient wind speed adjustment operation and lack of automatic wind speed adjustment function according to environmental changes in existing handheld fans.

[0005] To achieve the above objectives, this utility model provides an intelligent handheld fan capable of automatically adjusting wind speed according to ambient temperature, comprising a fan handle, a base, and a housing. The housing is fixed to the upper side of the fan handle, and the base is detachably mounted on the lower side of the fan handle.

[0006] A temperature sensor and a touch sensor are installed inside the fan handle. The base is fastened to the fan handle via a snap-fit ​​assembly, which includes at least two insert plates with several retaining rings on each plate. The retaining rings contact the inner wall of the fan handle, thereby controlling the start and stop of the motor.

[0007] Preferably, the outer periphery of the fan handle is provided with a first mounting position and a second mounting position; the touch sensor is mounted on the first mounting position and the temperature sensor is mounted on the second mounting position; an electrical cavity is also provided inside the fan handle.

[0008] Preferably, the length of the first mounting position is less than half the total length of the fan handle; the second mounting position is located on the side close to the housing.

[0009] Preferably, the electrical cavity also houses a circuit board, a processor, a battery, and a charging interface; wherein the battery and the processor are electrically connected to the circuit board, and the charging interface is connected to the outside.

[0010] Preferably, the bottom of the fan handle is provided with a switch slot; the plug plate is detachably installed in the switch slot; and a main contact switch is fixed on the inner wall of the switch slot.

[0011] Preferably, two grooves are formed between the three retaining rings, the size of which is consistent with the main contact switch; wherein, a secondary contact switch is provided on the lower side of the uppermost retaining ring.

[0012] Preferably, a motor is installed in the middle of the housing, and the motor has fan blades mounted on a rotor shaft; an outer cover is also installed on one side of the housing.

[0013] Compared with existing technologies, the advantages of this invention, which provides an intelligent handheld fan capable of automatically adjusting wind speed according to ambient temperature, are as follows:

[0014] 1. With the touch sensor and latching assembly, the fan automatically turns on when the user picks it up and immediately turns off when they release it. When using the fan on a desktop, a simple tap turns it off, eliminating the need to search for buttons and greatly reducing the hassle of starting and stopping the fan. Furthermore, the fan can freely switch control modes depending on whether it's handheld or on a desktop, providing more diverse and convenient control methods.

[0015] 2. The contact between the retaining ring and the inner wall of the fan handle controls the motor's start and stop. Furthermore, the snap-fit ​​assembly not only functions as a power switch for the fan but also enables quick assembly and disassembly of the base, making the fan's removal and installation process faster and more convenient.

[0016] 3. The temperature sensor can detect the ambient temperature and automatically adjust the fan speed. When the ambient temperature rises, the fan speed increases to provide stronger cooling; when the temperature drops, the fan speed decreases to save power and avoid overcooling. The microcontroller inside the fan controls the motor speed in real time based on the temperature sensor data, achieving a constant and suitable airflow output without manual adjustment.

[0017] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a perspective view of an embodiment of the present utility model.

[0019] Figure 2 This is a half-sectional view of an embodiment of the present utility model.

[0020] Figure 3 This is an embodiment of the present utility model. Figure 2 A magnified view of point A in the middle.

[0021] Figure 4 This is a view of the base of an embodiment of this utility model.

[0022] in:

[0023] 10-Fan handle; 11-Electrical cavity; 12-First mounting position; 13-Second mounting position; 14-Main contact switch; 15-Switch slot; 20-Base; 21-Plug plate; 22-Snap ring; 30-Outer shell; 31-Motor; 32-Fan blade; 33-Outer cover. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0025] In the description of this utility model, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.

[0026] In the description of this utility model, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] See Figure 1-4 This utility model provides an intelligent handheld fan that can automatically adjust the wind speed according to the ambient temperature. It includes a fan handle 10, a base 20 and a housing 30. The housing 30 is fixed to the upper side of the fan handle 10. A motor 31 is installed in the middle of the housing 30. Fan blades 32 are installed on the motor 31 through a rotor shaft. An outer cover 33 is also installed on one side of the housing 30. The base 20 is detachably installed on the lower side of the fan handle 10. The fan motor is located inside the fan itself.

[0029] The fan handle 10 houses a temperature sensor and a touch sensor. A first mounting position 12 and a second mounting position 13 are located on the outer periphery of the fan handle 10. The touch sensor is mounted on the first mounting position 12, and the temperature sensor is mounted on the second mounting position 13. An electrical cavity 11 is also formed inside the fan handle 10. The length of the first mounting position 12 is less than half the total length of the fan handle 10, and the second mounting position 13 is located near the outer casing 30. The temperature sensor senses the ambient temperature and sends the detection signal to the processor, which automatically adjusts the speed of the motor 31 based on the signal. The touch sensor detects the user's grip on the fan and controls the motor's start and stop. The touch sensor triggers the motor to start when the user grips the fan and stops it when the user releases the grip, thus allowing for fan start / stop control without pressing any buttons. Both the temperature sensor and the touch sensor are electrically connected to the fan's control circuit and do not interfere with each other; therefore, the movement of the touch sensor will not affect the normal detection of ambient temperature by the temperature sensor.

[0030] The base 20 is fastened to the fan handle 10 via a snap-fit ​​assembly. The snap-fit ​​assembly includes at least two insert plates 21, each with three retaining rings 22. The retaining rings 22 contact the inner wall of the fan handle 10, thereby controlling the motor's start and stop. Furthermore, this snap-fit ​​assembly not only functions as a fan power switch but also enables quick disassembly and assembly of the base, making the fan's installation and removal process faster and more convenient.

[0031] The electrical cavity 11 also houses a circuit board, a processor, a battery, and a charging interface. The battery and processor are electrically connected to the circuit board, and the charging interface is connected to the outside. The charging interface and the wire opening between the fan handle 10 and the outer casing 30 are sealed. The switching mechanism is achieved through the contact of the snap-fit ​​assembly. Therefore, the entire fan handle 10 is a sealed space, which provides a certain degree of waterproofing.

[0032] The bottom of the fan handle 10 also has a switch slot 15. The insert plate 21 is detachably installed in the switch slot 15. A main contact switch 14 is fixed on the inner wall of the switch slot 15. Two grooves are formed between the three retaining rings 22, and the size of the grooves is the same as that of the main contact switch 14. The uppermost retaining ring 22 has a secondary contact switch on its lower side. When the secondary contact switch and the main contact switch 14 are in contact, the fan circuit is connected and the fan starts running; when they are separated, the fan circuit is disconnected and the fan stops running. This pair of contact switches on the snap-fit ​​assembly ensures that the fan can still be started and stopped normally when placed on a desktop, significantly increasing the fan's control methods. In addition, the user can directly turn off the running fan by pressing down on the fan handle 10 or tapping the outer casing 30, further improving the convenience of the fan shutdown operation.

[0033] Working principle: When used handheld, the user can start the fan by simply holding the fan handle 10. Since the length of the first mounting position 12 is approximately half the total length of the fan handle 10, the user's palm can easily reach the touch sensor, triggering the motor 31 to run and drive the fan to blow air. When no longer in use, the user releases their hand or puts the fan in their bag, the touch sensor is deactivated as the palm is removed, and the fan automatically turns off.

[0034] During fan operation, a temperature sensor continuously monitors changes in ambient temperature: when the ambient temperature rises, the processor controls the fan to increase its speed to provide stronger cooling; when the ambient temperature drops, the fan reduces its speed to save power and avoid overcooling.

[0035] When the fan needs to be placed on a desktop, since the touch sensor on the first mounting position 12 is not triggered, the main contact switch 14 can be moved to the upper recess position and make contact with the secondary contact switch of the upper retaining ring 22 by gently lifting the fan handle 10 along with the base 20. The fan will then be turned on and operate normally. To turn off the fan, simply tap the fan to return the main contact switch 14 to the lower recess and disengage it from the secondary contact switch, thus turning off the fan.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A smart hand fan capable of automatically adjusting the speed of the fan according to the ambient temperature, comprising a fan handle (10), a base (20) and a shell (30), characterized in that: The outer casing (30) is fixed to the upper side of the fan handle (10), and the base (20) is detachably installed on the lower side of the fan handle (10); The fan handle (10) is equipped with a temperature sensor and a touch sensor. The temperature sensor is electrically connected to the fan's control circuit to automatically adjust the fan motor speed according to changes in ambient temperature. The touch sensor is used to detect the user's grip on the fan and control the start and stop of the fan motor. The base (20) is fastened to the fan handle (10) by a snap-fit ​​assembly. The snap-fit ​​assembly includes at least two insert plates (21). Multiple retaining rings (22) are provided on the insert plates (21). The retaining rings (22) contact the inner wall of the fan handle (10) to realize the start and stop control of the fan motor.

2. The smart handheld fan of claim 1, wherein: The fan handle (10) has a first mounting position (12) and a second mounting position (13) on its outer periphery; the touch sensor is mounted on the first mounting position (12) and the temperature sensor is mounted on the second mounting position (13); the fan handle (10) also has an electrical cavity (11) inside.

3. The smart handheld fan of claim 2, wherein: The length of the first mounting position (12) is less than half the total length of the fan handle (10); the second mounting position (13) is located on the side close to the housing (30).

4. The intelligent handheld fan as described in claim 2, characterized in that: The electrical cavity (11) is also equipped with a circuit board, a processor, a battery and a charging interface; wherein the battery and the processor are electrically connected to the circuit board and the charging interface is connected to the outside.

5. The intelligent handheld fan as described in claim 1, characterized in that: The bottom of the fan handle (10) is provided with a switch slot (15); the insert plate (21) is detachably installed in the switch slot (15); a main contact switch (14) is fixed on the inner wall of the switch slot (15).

6. The intelligent handheld fan as described in claim 5, characterized in that: Two grooves are formed between the three retaining rings (22), the size of which is consistent with the main contact switch (14); wherein, the uppermost retaining ring (22) among the three retaining rings (22) is provided with a secondary contact switch on its lower side.

7. The intelligent handheld fan as described in claim 1, characterized in that: A motor (31) is installed in the middle of the outer casing (30), and the motor (31) is equipped with fan blades (32) via a rotor shaft; an outer cover (33) is also installed on one side of the outer casing (30).

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