CN209761791U - Electric fan capable of switching off power supply on ground - Google Patents

Abstract

the utility model discloses an electric fan capable of cutting off power reversely, which comprises a base, a machine body, fan blades, a protective cover and a driving motor, wherein the upper surface of the base is provided with a power supply port and an on-off switch; the safety switch is provided with a button for controlling the self-connection or disconnection, the lower surface of the base is provided with a through hole, and the button of the safety switch is positioned in the through hole and extends out of the through hole; when the base is placed on the ground, the button of the safety switch is pushed by the ground to trigger conduction, and meanwhile, the button can retract into the base due to the pushing of the ground. The utility model has the advantages of it is following and effect: when the electric fan falls to the ground, the power supply can be cut off in time, and a user is reminded.

Description

Electric fan capable of switching off power supply on ground

Technical Field

The utility model relates to a fan technical field, in particular to electric fan that can fall down the outage.

Background

The electric fan is mainly used for cooling, relieving summer heat and circulating air, is the most common electric appliance for people in summer, and achieves the effect of accelerating the circulation of air by driving the fan blades to rotate by using the motor.

In the use process of the electric fan, the electric fan falls down due to external interference or human accidents, for example, the electric fan is not stably placed or is blown by strong wind to blow up a curtain and the like, and the electric fan can fall down.

when the electric fan in use falls down accidentally, the protective cover can not effectively absorb the force of the electric fan to deform, the fan blades rotating at high speed continuously contact and collide with the protective cover, the fan blades are broken and fly out to the periphery at high speed, the electric fan is damaged by light persons, people around the electric fan can be injured by heavy persons, and the electric fan has great potential safety hazards.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electric fan that can fall the ground outage, can in time cut off the power when the electric fan falls the ground to remind the user.

The above technical purpose of the present invention can be achieved by the following technical solutions: an electric fan capable of cutting off power reversely comprises a base as a bearing structure, a machine body arranged on the base and fan blades rotatably arranged on the machine body, wherein a protective cover for covering the fan blades is fixedly arranged on the machine body; the upper surface of the base is provided with a power supply port and an on-off switch, the power supply port is used for being connected with an external power supply to supply power to the driving motor, the on-off switch is connected in series with the power supply port and a power supply circuit of the driving motor and is used for controlling on-off electric connection between the power supply port and the power supply circuit of the driving motor, a non-self-locking safety switch is arranged in the base, and the safety switch is connected in series with the power supply port and the power supply circuit of the driving motor; the safety switch is provided with a button for controlling the self-connection or disconnection, a through hole is formed in the lower surface of the base corresponding to the button, and the button of the safety switch is positioned in the through hole and extends out of the through hole; when the base is placed on the ground, the button of the safety switch is pushed by the ground to trigger conduction, and meanwhile, the button can retract into the base due to the pushing of the ground.

Further setting the following steps: the button of the safety switch is vertically arranged and is vertical to the lower surface of the base.

Further setting the following steps: the safety switch is a touch switch.

Further setting the following steps: and one end of the button of the safety switch, which faces the ground, is regularly provided with a plurality of damping bulges.

Further setting the following steps: the upper surface of the base is also provided with an indicator light which is connected in series on a power supply port and a power supply circuit of the driving motor, and when the on-off switch and the safety switch are both switched on, the indicator light is electrified and lightened to play an indicating role.

Further setting the following steps: the on-off switch is a ship-shaped switch.

The utility model has the advantages that:

1. When the electric fan is accidentally overturned, the power supply of the driving motor can be timely cut off through the safety switch, so that the fan blades stop rotating, the fan blades are prevented from being continuously collided with the deformed protective cover to cause damage to the fan blades, the service life of the electric fan is prolonged, and the use safety of a user is guaranteed.

2. When the electric fan is normally used, the safety switch can be retracted into the base under the pushing of the ground, the balance and the stability of the base cannot be affected, and the electric fan can be normally placed and has extremely strong adaptability.

3. the upper surface at the base still is provided with the pilot lamp that is used as the instruction, and when the on-off switch and safety switch all switched on, the pilot lamp was lighted in order to remind user's electric fan and is working, and when on-off switch and/or safety switch disconnection, the pilot lamp outage was extinguish, and the user can observe the pilot lamp and judge the behavior of electric fan, has brought the facility to user's use.

4. The utility model discloses only need safety switch can realize falling the function of ground outage, have simple structure low price's advantage, reduction in production cost that can be very big.

drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is another schematic structural diagram of the embodiment;

FIG. 3 is a partial sectional view of a base in the embodiment;

FIG. 4 is a functional block diagram of an embodiment;

Fig. 5 is a schematic circuit diagram of an embodiment.

In the figure: 1. a base; 2. a body; 3. a fan blade; 4. a protective cover; 5. a drive motor; 6. a power supply port; 7. opening and closing a switch; 8. a safety switch; 80. a button; 801. a damping projection; 9. an indicator light; 10. a through hole; 11. and (4) conducting wires.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

referring to fig. 1 to 5, an electric fan capable of cutting off power reversely includes a base 1 as a bearing structure, a body 2 disposed on the base 1, and a fan blade 3 rotatably disposed on the body 2, wherein a protective cover 4 covering the fan blade 3 is fixedly disposed on the body 2, a driving motor 5 is fixedly disposed inside the body 2, and an output shaft of the driving motor 5 extends out of the body 2 and is fixedly connected with the fan blade 3 for driving the fan blade 3 to rotate; the upper surface of base 1 is provided with power supply port 6 and on-off switch 7, and power supply port 6 is used for supplying power to driving motor 5 with external power source connection, and on-off switch 7 establishes ties on power supply port 6 and driving motor 5's power supply circuit and is used for controlling the break-make electricity between the two to be connected. An external power supply is connected with the power supply port 6 and supplies power to the driving motor 5 through the power supply port 6, and the power supply port 6, the driving motor 5 and the on-off switch 7 are connected through a wire 11.

The base 1 is internally provided with a non-self-locking safety switch 8, the safety switch 8 is connected in series with a power supply circuit of the power supply port 6 and the driving motor 5, the safety switch 8 is provided with a button 80 for controlling the self-connection or disconnection, and the button 80 is vertically arranged and is vertical to the lower surface of the base 1. The button 80 of the safety switch 8 is regularly provided with a plurality of damping protrusions 801 towards one end of the ground, so that the safety switch can be better contacted with the ground and can correspond to the condition that the uneven ground or the ground has impurity particles.

A through hole 10 is formed in the lower surface of the base 1 corresponding to the button 80, and the button 80 of the safety switch 8 is positioned in the through hole 10 and extends out of the through hole 10; and when base 1 placed on subaerial, safety switch 8's button 80 is pushed by ground and triggers to switch on, and safety switch 8's button 80 can retract inside base 1 owing to pushing of ground simultaneously, can not cause the influence to equilibrium and stability when base 1 placed.

The on-off switch 7 is a ship-shaped switch, and the switch is a self-locking switch which generally has a mechanical locking function and is pressed down, and the button 80 cannot be completely jumped up after the hand is released, is in a locking state, and needs to be pressed once again to be unlocked and completely jumped up. So that the user can press the on-off switch 7 to complete the locking on-off state.

the safety switch 8 is a non-self-locking light touch switch, and the switch can be in a conducting state only when stressed all the time, and is switched to a disconnecting state if the stress is lost.

The working principle of the embodiment is as follows: open and close switch 7 and safety switch 8 and all establish ties on power supply port 6 and driving motor 5's power supply circuit, when open and close switch 7 and safety switch 8 all switched on, just external power source accessible power supply port 6 supplies power to driving motor 5, alright drive the rotation of flabellum 3 by driving motor 5 from this, circulation of air with higher speed lets the user feel cool and happy. When the electric fan is placed on the ground, the button 80 of the safety switch 8 is always pressed by the ground and is in a conducting state all the time, at the moment, after a user turns on the on-off switch 7, because the safety switch 8 and the on-off switch 7 are both conducted, the power supply port 6 and a power supply circuit of the driving motor 5 form a conducting loop, and the driving motor 5 is electrified to work and drives the fan blades 3 to rotate; when the electric fan is turned over accidentally, the base 1 is separated from the ground, the button 80 of the safety switch 8 is popped up after losing the pushing action force of the ground, the safety switch 8 is disconnected, the power supply port 6 and the power supply circuit of the driving motor 5 are also disconnected, and the fan blade 3 is stopped rotating after losing the driving of the driving motor 5.

In addition, the upper surface of base 1 still is equipped with an pilot lamp 9, and on-off switch 7, safety switch 8, terminal, driving motor 5 and pilot lamp 9 all connect through wire 11, also can connect through printed PCB circuit board, all belong to the conventional technique in electron field, connect through wire 11 in this embodiment. The indicator light 9 adopts a light emitting diode, the indicator light 9 is connected in series on the power supply port 6 and a power supply circuit of the driving motor 5, and when the on-off switch 7 and the safety switch 8 are both switched on, the indicator light 9 is electrified and lightened to play an indicating role; when the on-off switch 7 and/or the safety switch 8 are turned off, the indicator lamp 9 is turned off when the power is off, and a user can observe the indicator lamp 9 to judge the working condition of the electric fan, so that the electric fan is very convenient.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (6)

1. An electric fan capable of cutting off power reversely comprises a base (1) serving as a bearing structure, a machine body (2) arranged on the base (1) and fan blades (3) rotatably arranged on the machine body (2), wherein a protective cover (4) covering the fan blades (3) is fixedly arranged on the machine body (2), a driving motor (5) is fixedly arranged in the machine body (2), and an output shaft of the driving motor (5) extends out of the machine body (2) and is fixedly connected with the fan blades (3) to drive the fan blades (3) to rotate; the upper surface of base (1) be provided with power supply port (6) and open and close switch (7), power supply port (6) be used for with external power source connection come to supply power to driving motor (5), open and close switch (7) establish ties and be used for controlling the break-make electricity between the two and connect on power supply port (6) and driving motor's (5) power supply circuit, its characterized in that:

A non-self-locking safety switch (8) is arranged in the base (1), and the safety switch (8) is connected in series with a power supply circuit of the power supply port (6) and the driving motor (5);

The safety switch (8) is provided with a button (80) for controlling the self-on or off, a through hole (10) is formed in the lower surface of the base (1) corresponding to the button (80), and the button (80) of the safety switch (8) is positioned in the through hole (10) and extends out of the through hole (10);

when the base (1) is placed on the ground, the button (80) of the safety switch (8) is pushed by the ground to trigger conduction, and meanwhile, the button can retract into the base (1) due to the pushing of the ground.

2. A reversible power-off electric fan as claimed in claim 1, wherein: the button (80) of the safety switch (8) is vertically arranged and is vertical to the lower surface of the base (1).

3. A reversible power-off electric fan as claimed in claim 1, wherein: the safety switch (8) is a touch switch.

4. A reversible power-off electric fan as claimed in claim 1, wherein: one end of the button (80) of the safety switch (8) facing the ground is regularly provided with a plurality of damping bulges (801).

5. A reversible power-off electric fan as claimed in claim 1, wherein: the upper surface of base (1) still be equipped with an pilot lamp (9), this pilot lamp (9) establish ties on power supply port (6) and driving motor's (5) supply circuit, when opening and close switch (7) and safety switch (8) and all switch on, pilot lamp (9) circular telegram is lighted in order to play the indicating action.

6. A reversible power-off electric fan as claimed in claim 1, wherein: the on-off switch (7) is a ship-shaped switch.