JP6868765B2 - Fan - Google Patents

Description

The present invention relates to an electric fan .

Conventionally, it is known that this type of fan is used in the direction of air blown by the user, with the blower portion directed in the direction of air blown by a swinging device (see, for example, Patent Document 1).

Hereinafter, the electric fan will be described with reference to FIG.

As shown in FIG. 6, the main body 101 of the electric fan is composed of a blower portion 102, a support column 103, and a base 104. An operation unit 105 is arranged on the base 104, and it is known that the base 104 directs the air blower 102 in a desired air blow direction by the operation of the user.

Japanese Unexamined Patent Publication No. 4-246292

In such a conventional electric fan, when the operation is stopped, the front surface of the blower portion 102 returns to the front surface of the main body 101 of the electric fan, and when the operation is started, the operation state at the time of the previous use is restored. That is, the direction of the blower portion 102 is returned to the direction in which the blower was blown last time. Therefore, even if the user manually changes the blowing direction at the time of stopping, the air blows back to the previous blowing direction, and there is a problem that the user cannot blow air in the changed direction.

Therefore, the present invention solves the above-mentioned conventional problems, and the user changes by stopping the operation, detecting that the user has changed the blowing direction by hand, and operating with the changed position as a reference. It is an object of the present invention to provide a fan that can blow air in the desired direction and can return to the original position at the next start of operation by detecting the current direction of air when the operation is stopped thereafter.

And, in order to achieve this object, the electric fan of the present invention
It is a fan with a blower on the main body.
A swing device that swings the blower unit and
A swing position detecting device that detects the blowing direction of the blowing unit, and
A swing control unit for controlling the swing device is provided.
The swing control unit
When the operation is stopped
Swing the air blowing direction of the air blowing unit in the front direction of the main body.
The blowing direction of the blowing unit at the time of receiving the operation stop instruction is memorized as the previous blowing direction, and is stored.
At the start of the next operation
When the blower portion faces the front direction of the main body, the swinging operation is performed in the previous blower direction.
When the blower portion does not face the front direction of the main body, the blower direction is reset last time, thereby achieving the intended purpose.

According to the fan of the present invention, when it is detected that the blowing direction of the blowing portion at the time of starting is not the front, the blowing portion is reset without returning to the previous blowing direction. Therefore, it is possible to obtain the effect that the air can be blown in the changed direction even when the place of use is changed after the operation is stopped.

External view showing the electric fan according to the first embodiment of the present invention. The same, the figure which shows the block circuit diagram of the electric fan The figure which shows the operation which shows the use example 1 of the electric fan. The figure which shows the operation which shows the use example 2 of the electric fan. Similarly, a flowchart showing the usage state of the electric fan External view showing a conventional electric fan

The electric fan according to the present invention is an electric fan having a blower portion in the main body.
A swinging device for swinging the blower unit, a swinging position detecting device for detecting the blowing direction of the blowing unit, and a swinging control unit for controlling the swinging device are provided.
The swing control unit
When the operation is stopped
The blowing direction of the blowing portion is swung in the front direction of the main body, and the blowing operation is performed.
The blowing direction of the blowing unit at the time of receiving the operation stop instruction is memorized as the previous blowing direction, and is stored.
At the start of the next operation
When the blower portion faces the front direction of the main body, the swinging operation is performed in the previous blower direction.
When the blower portion does not face the front direction of the main body, the blower direction is reset last time.

With this configuration, when it is detected that the blowing direction of the blowing unit at the time of startup is not the front, the blowing unit is reset without returning to the previous blowing direction. Therefore, it is possible to obtain the effect that the air can be blown in the changed direction even when the place of use is changed after the operation is stopped.

(Embodiment 1)
The electric fan according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 5. The same configurations as those of the conventional example are assigned the same numbers, and detailed description thereof will be omitted.

Each figure is an example of the electric fan of the present invention, and FIG. 1 is an external perspective view of the electric fan according to the present embodiment. FIG. 2 is a block diagram of an electric fan according to the present embodiment. FIG. 3 shows an example of the swinging motion of the electric fan according to the present embodiment, and FIG. 4 shows another example of the swinging motion of the electric fan according to the present embodiment. FIG. 5 is a flowchart showing a process of swinging the fan according to the present embodiment.

As shown in FIG. 1, the main body 101 includes a blower portion 102 that blows out air, a support column 103 that supports the blower portion 102, and a base 104 that serves as a pedestal for the blower portion 102 and the support column 103.

The blower 102 has an impeller and a motor for rotating the impeller. Although detailed description is omitted, in the present embodiment, the impeller is an axial fan and is connected to the rotating shaft (shaft) of the motor. The stepping motor 3 is provided at the upper end of the support column 103, and is driven to swing the blower portion 102. Further, the rotation position of the blower portion 102 is performed by the swing position detecting device 4 that measures the angle between the front surface of the main body 101 and the blower direction of the blower portion 102. The blowing direction of the blowing unit 102 is the direction of the airflow generated by the rotation of the impeller, and in the present embodiment, is the direction of the rotation axis of the motor.

The base 104 includes an operation unit 105 that gives an operation / stop instruction, an operation mode setting, and the like.

The control unit 7 is arranged inside the base 104. As shown in FIG. 2, the control unit 7 includes an operation setting unit 8, a blower position determining unit 9 at the start of operation, a swing control unit 10, and a stepping motor control unit 11.

The operation setting unit 8 determines the operation state in response to the operation operation from the operation unit 105. The blower position determination unit 9 at the start of operation receives the operation start signal from the operation setting unit 8 and the swing position information from the swing position detection device 4, and determines the execution of the previous position return. The swing control unit 10 determines the swing operation by each input and instructs the stepping motor control unit 11. The stepping motor control unit 11 drives the stepping motor 3 in response to a swing instruction from the swing control unit 10.

The air blowing position determining unit 9 at the start of operation stores the air blowing direction of the air blowing unit 102 when it was stopped last time, or the swing center position of the air blowing unit 102 when it was stopped last time. Hereinafter, the blowing direction of the blowing unit 102 at the time of the previous stop, or the swing center position of the blowing unit 102 at the time of the previous stop is referred to as the previous blowing direction.

The control of the blowing direction of the blowing unit 102 at the start and stop of operation will be described with reference to FIGS. 2 to 5.

First, the operation at the start of operation will be described. As shown in FIG. 5, when the operation unit 105 is operated to instruct the start of operation (S01), the blower position determining unit 9 at the start of operation receives the operation start signal via the operation setting unit 8. Then, the blowing position determining unit 9 at the start of operation determines whether the blowing direction of the blowing unit 102 is the front direction of the main body 101 (S02). If the blowing direction of the blowing unit 102 is the front direction of the main body 101 (S02 Y), the stepping motor control unit 11 is instructed to return the blowing direction of the blowing unit 102 to the previous blowing direction (S04). The operation of step S03 will be described later.

In this way, when the instruction to start the operation is received and the blowing direction of the blowing unit 102 is in front of the main body 101, the swing control unit 10 sets the blowing direction of the blowing unit 102 to the previous blowing direction. Control to implement. The method of returning to the previous blowing direction will be described in detail later. Then, when the swing stop operation of the operation unit 105 is performed in the blowing direction desired by the user, the stepping motor control unit 11 that receives the drive stop signal from the swing control unit 10 stops the stepping motor 3. The operation is such that the direction of ventilation desired by the user is fixed.

On the other hand, when the instruction to start the operation is received and the blowing direction of the blowing unit 102 is not in front of the main body 101 (S02 N), the swing control unit 10 gives an instruction to the stepping motor control unit 11. Instead, the operation is started with the blowing direction of the blowing unit 102 as the blowing direction of the blowing unit 102 at that time. That is, when the blowing direction of the blowing unit 102 is not in front of the main body 101, it is considered that the user manually moves the blowing unit 102 at the time of stopping to set the desired blowing direction, and the blowing direction of the blowing unit 102 at that time is assumed to be set. It operates in the same direction as the air blown.

Next, the operation when the operation is stopped will be described. When the user operates the operation unit 105 to perform the operation stop operation, the operation setting unit 8 sends an operation stop request to the swing control unit 10. In response to the stop request of the operation setting unit 8, the swing control unit 10 outputs a drive signal to the stepping motor control unit 11 so that the blow direction of the blower unit 102 swings toward the front of the main body 101, and the stepping motor 3 (S07). When the swing position detecting device 4 detects the front surface of the main body 101 as the swing position information, the blowing direction of the blowing unit 102 coincides with the front direction of the main body 101. At this time, the swing control unit 10 transmits a drive signal stop to the stepping motor control unit 11 to stop the stepping motor 3. Then, the swing position detection device 4 moves from the swing control unit 10 receiving the stop request of the operation setting unit 8 until the blower unit 102 coincides with the front direction of the main body 101 (hereinafter, the previous blower direction angle). ) Is calculated, and the swing control unit 10 stores it as the return position for the next operation (S08). The previous air blowing direction angle is 0 degrees at the position in front of the main body 101, and the values are opposite to each other on the left and right.

The operation at the start of operation will be described with reference to FIGS. 3 and 4.

First, a case where the user starts the operation without changing the blowing direction of the blowing unit 102 will be described with reference to FIG.

When the user operates the operation unit 105 to start the operation, the operation start air blowing position determination unit 9 that receives the operation start from the operation setting unit 8 confirms the swing position of the swing position detection device 4. .. When the operation start air blowing position determining unit 9 determines that the swing position information is in front of the main body 101, it instructs the swing control unit 10 so that the blowing direction of the blowing unit 102 is the previous blowing direction. The swing control unit 10 instructs the stepping motor control unit 11 to return the air flow direction of the air blower unit 102 to the reverse direction by the stored previous air blow direction angle. The stepping motor control unit 11 drives the stepping motor control unit 11 in the direction opposite to the drive direction at the time of the previous stop by the previous blow angle based on the angle instruction from the swing control unit 10. In the example of FIG. 3, the blowing direction of the blowing unit 102 returns to the position of 40 ° clockwise, which is the previous blowing direction.

Next, a case where the user changes the blowing direction of the blowing unit 102 and starts the operation while the vehicle is stopped will be described with reference to FIG.

The blowing direction of the blowing unit 102 is a direction other than the front of the main body 101, which is manually moved by the user while stopped. When the user operates the operation unit 105 to start the operation, the operation setting unit 8 transmits the operation start to the ventilation position determination unit 9 at the start of the operation. The blower position determination unit 9 at the start of operation confirms the swing position of the swing position detection device 4. When it is determined that the swing position information detected by the swing position detection device 4 is not in front of the main body 101, the previous blow direction is reset, that is, the swing control unit 10 erases the stored previous blow angle. To do. Then, the operation is started with reference to the current position without rotating the blower 102.

As described above, if the user does not change the blowing direction of the blowing unit 102 before the start of the operation, the operation will be performed in the blowing direction at the time of the previous operation. Further, if the user changes the blowing direction of the blowing unit 102 before the start of operation, the blowing unit 102 can be operated in the blowing direction newly set by the user.

Further, even when the user changes the blowing direction of the blowing unit 102 for operation, the swing position detecting device 4 detects the moving angle until the blowing unit 102 coincides with the front direction of the main body 101 when the operation is stopped. However, since the return position for the next operation is memorized, the operation can be performed at the changed ventilation position even when the next operation is performed.

When the blowing direction of the blowing unit 102 is not in front of the main body 101 (S02 N) when the instruction to start the operation is received, the swing control unit 10 sets the blowing direction of the blowing unit 102 of the main body 101. You may return to the front and start the operation. That is, since the blower unit 102 operates in the original front surface of the main body 101, the operation is performed in a good-looking manner. At the start of operation, a switch may be provided to set whether to turn to the front direction or to operate in the blowing direction of the blowing unit 102 at that time.

Here, when starting the operation, there is a problem when the user wants to set the blowing direction of the blowing unit 102 to the front direction of the main body 101. That is, since the blowing direction of the blowing unit 102 faces the front direction of the main body 101 during the stop, the blowing direction of the blowing unit 102 cannot be set to the front of the main body 101 at the start of operation. At this time, the blowing direction of the blowing unit 102 is set to the front direction of the main body 101 by stopping the operation after the blowing direction of the blowing unit 102 is directed to the front direction of the main body 101 during operation.

In such a case, if the position instructed to stop is slightly different from the front of the main body 101, the blower 102 is moved to the front by a slight angle after the stop, and at the start of operation, a slight previous blow angle is obtained. , The blower 102 will be rotated. Such an operation should operate smoothly without swinging at the start and stop of the operation, but it is an annoying operation such as a slight swinging motion each time.

Therefore, the blower position determination unit 9 at the start of operation determines the size of the operation angle (previous blower angle) at the time of the previous stop in addition to the swing position information, so that the previous position return is performed. To do.

That is, when the operation is started from the operation unit 105, if the air blowing direction of the air blowing unit 102 is the front direction of the main body 101 and the previous air blowing angle is larger than the predetermined set angle, the air blowing direction of the air blowing unit 102 is changed. It returns to the previous blowing direction (S03). On the other hand, when the operation is started from the operation unit 105, if the air blowing direction of the air blowing unit 102 is the front direction of the main body 101 and the previous air blowing angle is smaller than the predetermined set angle, the air blowing direction of the air blowing unit 102 is changed. Not to do. That is, when the previous blowing angle is substantially in front of the main body 101, the operation can be started without returning to the previous blowing angle and making the user feel uncomfortable.

The fan according to the present invention can blow air in the changed direction when the operation is stopped and the user arbitrarily changes the blowing direction, and can blow air in the previous blowing direction when the blowing direction is not changed. Therefore, the blowing direction can be freely selected by the user, and it is useful as a fan that can direct the blowing part to the front of the main body, which has a good design when stopped.

3 Stepping motor 4 Swing position detection device 7 Control unit 8 Operation setting unit 9 Blower position determination unit at the start of operation 10 Swing control unit 11 Stepping motor control unit 101 Main body 102 Blower 103 Strut 104 Base 105 Operation unit

Claims (3)

It is a fan with a blower on the main body.
A swing device that swings the blower unit and
A swing position detecting device that detects the blowing direction of the blowing unit, and
A swing control unit for controlling the swing device is provided.
The swing control unit
When the operation is stopped
The blowing direction of the blowing portion is swung in the front direction of the main body, and the blowing operation is performed.
The blowing direction of the blowing unit at the time of receiving the operation stop instruction is memorized as the previous blowing direction, and is stored.
At the start of the next operation
When the blower portion faces the front direction of the main body, the swinging operation is performed in the previous blower direction.
A fan that resets the previous blowing direction when the blowing portion does not face the front direction of the main body. The swing control unit
The fan according to claim 1, wherein when the next operation is started, if the blower portion does not face the front direction of the main body, the operation is started without swinging the blower portion. The swing control unit
Claim that when the operation is started , if the blowing direction of the blowing portion by the swing position detecting device is equal to or less than a predetermined angle with respect to the front direction of the main body , the blowing portion is started without swinging. The electric fan according to 1 or 2.

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