JPH04352930A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To provide a vacuum cleaner which improves cleaning efficiency through control of the moving speed of a suction port body and the power of a motor-operated blower according to an amount of dust. CONSTITUTION:In an electric cleaner having a motor-operated blower control means 12 to control the power of a motor-operated blower and a motor control means 73 to control the rotation speed of a motor 72, a dust sensor 41 detects an amount of dust sucked in a suction port body 7. When an amount of dust detected by a dust sensor 41 exceeds a set amount, a power set by means of a first set operation means 43A is increased. A first set regulating means 43 to decrease a set power when a detecting dust amount is below a given amount and a second set regulating means 45 to decrease a rotation speed set by a second set operation means 45B when an amount of dust detected by the dust sensor 41 exceeds a given amount and increase a set rotation speed when a detecting dust amount is blow a given amount are provided.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner having various functions for sucking in dust.

0002

2. Description of the Related Art Conventionally, a vacuum cleaner shown in FIG. 3 has been known.

In FIG. 3, 101 is a vacuum cleaner body, and a dust collection chamber (not shown) is formed in this body 101.
Furthermore, an electric blower 102 is provided within the main body 101 to create a negative pressure in the dust collection chamber. Reference numeral 103 denotes a suction port body that sucks in dust, and is connected to the main body 101 via a hose 104 or the like.

The suction port body 103 includes an agitator (not shown) for scraping out dust from the surface to be cleaned, a running roller (not shown) for moving the suction port body 103, and a running roller and the agitator for moving the suction port body 103. A motor (not shown) that rotates the
is provided. A hand control unit 105 of the hose 104 is provided with a power setting switch 106 for switching the power of the electric blower 102 and a mode setting switch 107. The mode setting switch 107 is used to set the tatami mode or the carpet mode in accordance with the cleaning of tatami mats, carpets, etc.

[0005] When the electric blower 102 operates, the dust collection chamber becomes under negative pressure, and the suction port body 103 sucks in dust. When the mode setting switch 107 is set to carpet mode or the like, the motor is driven to rotate the traveling roller and the agitator. The rotation of the agitator scrapes out the dust adhering to the carpet, and the rotation of the running roller removes the dust from the suction port body 103.
moves over the surface to be cleaned while sucking up the dust.

[0006]

However, in the conventional vacuum cleaner, the rotational speed of the running roller of the suction port body 103 is constant, so the moving speed of the suction port body 103 is constant. For this reason, in areas with a lot of dust, the suction port body 103 continues to move even though all the dust has not been suctioned out, leaving dust behind, resulting in poor cleaning efficiency.

On the other hand, in areas where there is less dust, the suction port 103 moves at a constant speed even though the dust can be sucked in from the front even if the suction port 103 is moved quickly. For this reason, it was extremely inconvenient that time was wasted.

[0008]Therefore, there is an electric blower which controls the power of an electric blower according to the amount of dust to efficiently suck the dust (for example, see Japanese Patent Laid-Open No. 1-314543). However, since the moving speed of the suction port body 103 is constant, when cleaning an area with a lot of dust, dust inevitably remains, making it impossible to sufficiently improve the cleaning efficiency. In addition, there is a problem that time is wasted in areas where there is little dust.

An object of the present invention is to provide a vacuum cleaner that can improve cleaning efficiency by controlling the moving speed of the suction port and the power of the electric blower depending on the amount of dust.

0010

[Means for Solving the Problems] In order to solve these drawbacks, the present invention has the following means. That is, the present invention has a vacuum cleaner main body with a built-in electric blower, a running roller, and a motor for rotating the running roller, and is connected to the vacuum cleaner main body via a hose or the like to suck dust. a first setting operation section for setting the power of the electric blower; a second setting operation section for setting the rotational speed of the motor;
A vacuum cleaner comprising an electric blower control means for controlling the power of the electric blower according to the settings of the setting operation section, and a motor control means for controlling the rotational speed of the motor according to the settings of the second setting operation section. , a dust sensor detects the amount of dust sucked into the suction port body, and if the amount of dust detected by this dust sensor is larger than a predetermined amount, the power set by the first setting operation section is increased and the detection is performed. a first setting adjustment means for reducing the set power when the amount of dust detected is less than a predetermined amount; and a rotation speed set by a second setting operation section when the amount of dust detected by the dust sensor is greater than the predetermined amount. and a second setting adjustment means for increasing the set rotational speed when the detected amount of dust is less than a predetermined amount.

[0011]

[Operation] The dust sensor detects the amount of dust sucked into the suction port body. The first setting adjustment means increases the power of the electric blower set by the first setting operation section when the amount of dust detected by the dust sensor is greater than a predetermined amount, and when the amount of dust detected by the dust sensor is less than the predetermined amount. , reduce its set power. When the amount of dust detected by the dust sensor is greater than a predetermined amount, the second setting adjustment means reduces the rotation speed set by the second setting operation section that sets the rotation speed of the motor, so that the amount of dust detected by the dust sensor decreases. If it is less than the predetermined amount, the set rotation speed is increased.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a vacuum cleaner according to the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a vacuum cleaner body, and inside this body 1 there are provided a dust collection chamber 2 and an electric blower 11 for making the dust collection chamber 2 a negative pressure. A hose body 3 is detachably connected to the main body 1, and an electric suction port body 7 for sucking dust is detachably connected to the hose body 3 via an extension pipe 6.

The electric suction port body 7 includes an agitator 78 for scraping out dust adhering to a carpet, etc., a running roller 79 for moving the suction port body 7, and a motor 72 for rotating the agitator 78 and the running roller 79. and is provided.

A hand control section 5 is provided at the distal end 3A of the hose body 3, and the hand control section 5 includes a power setting switch (a first switch) for changing the power of the electric blower 11.
A mode setting switch 45A for setting the floor mode, carpet mode, etc., and a speed setting switch (second setting operation section) 45B for setting the rotation speed, which is the number of rotations per unit time of the motor 72. It is provided. For example, the power setting switch 43A can set the power to three levels: strong, medium, and weak.
This is a step-by-step switch.

FIG. 2 is a block diagram showing the configuration of the control system of the vacuum cleaner. In FIG. 2, 12 is the vacuum cleaner main body 1.
This is an input control section (electric blower control means) provided in the electric blower 11, and is for controlling the power of the electric blower 11. This input control unit 12 uses a control element such as a bidirectional triac, and controls the power of the electric blower 11 by controlling the conduction time of this control element.

Reference numeral 41 denotes a dust detection section (dust sensor) for detecting the amount of dust sucked by the absorption port body 7. As shown in FIG. It is provided in the air passage (not shown). The dust detection unit 41 includes a light emitter 41A that emits infrared rays and a light receiver 41B that receives the infrared rays, and the light emitter 41A and the light receiver 41B are arranged opposite to each other across the air path. Therefore, when dust passes through the air path, the infrared rays from the light emitter 41A are blocked, and the amount of light received by the light receiver 41B is reduced. That is, the light receiver 41B outputs a dust detection signal according to the amount of dust passing through the air path, that is, the amount of dust sucked by the suction port body 7.

Reference numeral 42 denotes a dust detection signal amplification section that amplifies the dust detection signal.

Reference numeral 43 denotes a suction force setting section that outputs a suction force signal to operate the electric blower 11 with the power set by the power setting switch 43A.The conduction time of the input control section 12 is controlled by this suction force signal. The electric blower 11 is operated with a set power. Also,
The suction force setting section 43 increases the power set by the power setting switch 43A when the amount of dust detected by the dust detection section 41 is greater than a predetermined amount, and when the amount of dust is less than the preset amount. , has a function as a first setting adjustment means that reduces the set power, corrects (adjusts) and outputs the suction force signal in accordance with the increase/decrease.

Reference numeral 44 denotes a transmission section that transmits the suction force signal output from the suction force setting section 43 to the input control section 12 provided in the cleaner body 1.

45 is a rotation speed setting section which outputs a speed signal according to the rotation speed set by the speed setting switch 45B, and this rotation speed setting section 45 is set to the carpet mode by the mode setting switch 45A. The speed signal is output, and when the floor mode is set, the output signal is not output. That is, the motor 72 is not rotated in the floor mode. Further, the rotation speed setting section 45 reduces the set rotation speed when the amount of dust detected by the dust detection section 41 is greater than a predetermined amount, and when the amount of dust is less than the predetermined amount, the rotation speed setting section 45 decreases the set rotation speed. It has a function as a second setting adjustment means that increases the set rotational speed, corrects (adjusts) and outputs the speed signal according to the increase or decrease in the rotational speed.

Reference numeral 46 denotes a rotation speed signal transmission section for transmitting the speed signal outputted from the rotation speed setting section 45 to a rotation speed control section 73 provided in the suction port body 7. This rotation speed control section (motor control means) 73 controls the rotation speed of the motor 72 in response to a speed signal from the rotation speed setting section 45.
This is, for example, by chopping the DC voltage output from the DC power supply section 71 and passing a pulsed current through the motor 72 to control the rotation speed.

Reference numeral 75 denotes a direction detection section provided on the lower surface of the suction port body 7, which detects the forward movement or retreat of the electric suction port body 7 and generates a direction detection signal. Direction detection section 75
is composed of, for example, a swinging lever (not shown) that swings in accordance with the moving direction of the suction port body 7, and a microswitch (not shown) that detects the swinging direction of the swinging lever.

Reference numeral 76 denotes a direction detection signal amplification section that amplifies the direction detection signal output from the direction detection section 75.

Reference numeral 77 denotes a rotation signal generating section that generates a forward/reverse rotation signal for causing the motor 72 to rotate forward or reverse based on the direction detection signal. This outputs a forward rotation signal when the direction detection signal indicates forward movement, and outputs a reverse rotation signal when it indicates backward movement.

Reference numeral 74 denotes a rotational direction conversion control section which rotates the motor 72 in the normal direction in response to the forward rotation signal, and reverses the motor 72 in response to the reverse rotation signal. By changing the direction of the current, the motor 72 can be rotated forward or reverse.

Next, the operation of this embodiment will be explained.

[0028] Power switch of the hand control unit 5 (not shown)
When the power is turned on by operating , the electric blower 11 of the vacuum cleaner main body 1 operates with the power set by the power setting switch 43A. The operation of the electric blower 11 creates a negative pressure in the dust collection chamber, and this negative pressure sucks dust from the suction port body 7 via the hose body 3 and the extension pipe 6. The sucked dust passes through the extension pipe 6 and the hose body 3, and is collected in a dust collection filter (not shown) provided in the dust collection chamber 2 of the cleaner body 1.

Mode setting switch 45A of hand control unit 5
When the carpet mode is set, the rotation speed setting section 45 outputs a speed signal set by the speed setting switch 45B, and the motor 72 is thereby rotated. The rotational speed control section 73 controls the rotational speed of the motor 72 based on the speed signal, and under this control, the motor 72 rotates at a set speed. The rotation of the motor 72 causes the agitator 78 and the traveling roller 79 to rotate.
The dust attached to the carpet is scraped out by the rotation of step 8. On the other hand, the rotation of the traveling roller 79 causes the suction port body 7 to move. The suction port body 71 then sucks up the scraped out dust while moving.

The rotation direction of the motor 72 is determined by detection by the direction detection section 75. For example, when the suction port body 7 is pushed forward by hand, the direction detection unit 75
detects that the rotation signal generator 7 has moved forward.
7 outputs a normal rotation signal. Then, the rotation direction conversion control section 74 causes the motor 72 to rotate in the normal direction based on the normal rotation signal, thereby moving the suction port body 7 forward. Conversely, when the suction port body 7 is pulled back by hand, the direction detection section 75 detects that the suction port body 7 has retreated, and the rotation signal generation section 77 detects that the suction port body 7 has retreated.
outputs a reversal signal. Then, the rotation direction conversion control section 7
4 rotates the motor 72 in the reverse direction according to the reverse rotation signal to move the suction port body 7 backward.

By the way, the amount of dust sucked by the suction port body 7 is detected by the dust detection section 41, and if this detected amount is greater than a predetermined amount, the suction force setting section 43 sets the amount of dust that has been set by the power setting switch 43A. Outputs a power setting signal indicating a power greater than the power. As a result, the motor 72 operates with a power greater than the set power,
The suction force of the suction port body 7 will be increased.

On the other hand, the rotation speed setting section 45 reduces the rotation speed set by the speed setting switch 45B and outputs a rotation speed signal indicating the reduced rotation speed, thereby decreasing the rotation speed of the motor 72. However, the moving speed of the suction port body 7 will decrease.

In other words, when the amount of dust adhering to the carpet is large, the power of the electric blower 11 is increased to increase the suction force of the suction port body 7, and at the same time, the moving speed of the suction port body 7 is decreased. It will be done. Therefore, even if there is a large amount of dust attached to the carpet, the dust can be reliably suctioned without leaving any residue behind, thereby increasing the cleaning efficiency.

When the amount of dust to be sucked is small, that is, when the amount of dust attached to the carpet is small, the suction force setting section 43 outputs a power setting signal indicating a power smaller than the power set by the power setting switch 43A. Output. As a result, the electric blower 11 operates with a power smaller than the set power, and the suction force of the suction port body 7 is reduced. Even if the suction force of the suction port body 7 decreases,
Since there is little dust, it is possible to suck up all the dust in a short time.

On the other hand, the rotation speed setting section 45 outputs a rotation speed signal indicating a rotation speed higher than the rotation speed set by the speed setting switch 45B, thereby increasing the rotation speed of the motor 72, and the suction port body 7 The movement speed of will be fast. Therefore, although the area that the suction port body 7 cleans per unit time increases, since the amount of dust attached to the carpet is small, the dust can be reliably sucked without leaving any residue.
Cleaning can be done in a short time without wasting time.

[0036]

[Effects of the Invention] As explained above, the present invention increases the power of the electric blower and reduces the rotational speed of the motor when the amount of dust to be sucked is large, and when the amount of dust is small, the power of the electric blower is increased and the rotation speed of the motor is reduced. Since the power is reduced and the rotational speed of the motor is increased, it is possible to reliably suction dust without leaving any dust, regardless of whether there is a lot of dust or not, thereby increasing cleaning efficiency. In addition, cleaning can be done in a short time without wasting time.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a block diagram showing an example of an electrical system of a vacuum cleaner.

FIG. 3 is a perspective view showing an example of a conventional vacuum cleaner.

[Explanation of symbols]

1 Vacuum cleaner main body 2 Suction tool 3 Hose body 4 Hand handle part 5 Hand operation part 6 Extension pipe 7 Electric suction port body 12 Input control part (blower control means) 41 Dust detection part (dust sensor) 43 Suction force setting part (second 1 setting adjustment means) 43A
Power setting switch (first setting operation means) 45 Rotation speed setting section (second setting adjustment means) 45B Speed setting switch (second setting operation means) 72 Motor

Claims (1)

[Claims] [Claim 1] A vacuum cleaner body having a built-in electric blower, a running roller, and a motor for rotating the running roller, and connected to the vacuum cleaner body via a hose or the like to suck dust. a suction port body, a first setting operation part for setting the power of the electric blower, a second setting operation part for setting the rotational speed of the motor, and a power of the electric blower according to the setting of the first setting operation part. and a motor control means that controls the rotational speed of the motor according to the settings of the second setting operation section, the amount of dust sucked into the suction port body. If the amount of dust detected by this dust sensor is greater than a predetermined amount, the power set by the first setting operation section is increased, and if the amount of dust detected is less than the predetermined amount, the power is increased. If the amount of dust detected by the dust sensor is larger than a predetermined amount, the rotation speed set by the second setting operation section is reduced, and the amount of dust detected is reduced to a predetermined amount. If the rotation speed is less than that, the second one increases the set rotation speed.
A vacuum cleaner characterized by having a setting adjustment means.