JPH04193137A - Suction port body for vacuum cleaner - Google Patents

Abstract

PURPOSE:To miniaturize a suction port main body and surely assist the running of the suction port main body on a carpet by rotating running rollers and a rotary brush respectively in the preset direction with respect to the running direction of the suction port main body with one driving means. CONSTITUTION:A rotary brush 31 is rotatably supported by a bearing 32 in the suction chamber 16 of a suction port main body 11. Running rollers 33 are rotatably supported on both sides of an air duct chamber 18 on the front side of a motor chamber 17 behind the rotary brush 31 on the suction port main body 11, and they are protruded downward from opening sections 35 opened on the lower face of the suction port main body 11 and rotated in contact with the face to be cleaned. A power transmission belt 43 is suspended on a pulley 38 fixed to the output shaft 37 of a motor 36, the lower side of a tension roller 39, the upper side of a pulley 41 provided on the rotary shaft 34 of the running rollers 33, the lower side of a pulley 42 fixed at the end section of the rotary brush 31, and the output shaft 37 of the motor 36 to constitute a transmission means 44.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a vacuum cleaner suction port body, and particularly relates to a vacuum cleaner equipped with a running roller that allows the suction port body to move by itself. .

(Prior Art) The suction mouth body of this type of conventional vacuum cleaner has a structure in which a rotary brush is rotated in the running direction to assist the running. For example, as described in Japanese Patent Application Laid-Open No. 63-197422, the number of strokes of the rotating brush per unit area of the surface to be cleaned can be increased by rotating the rotating brush in the opposite direction to the running direction of the suction port body. 2. Description of the Related Art A vacuum cleaner suction port having a structure that increases dust collection efficiency is known.

(Problems to be Solved by the Invention) However, in the conventional suction port structure in which the rotating brush is rotated in the running direction of the suction port body, the rotating brush is used for the self-propelled mechanism, so the surface to be cleaned is Even if it is possible to help the suction port main body run on a carpet, there is a problem in that the self-propelling efficiency of the suction port main body is low on surfaces to be cleaned such as tatami mats where the rotating brush is less likely to get caught. In addition, for example, in the suction mortar structure described in JP-A-63-197422, the rotating brush is rotated in the opposite direction to the running direction of the suction port body, so the suction port body resists the rotation of the rotating brush. This poses a problem in that it requires a large amount of operating force. Therefore, a structure may be considered in which drive means such as electric motors are provided to rotate the rotating brush and the traveling roller, respectively, but such a structure requires space in the suction port body for arranging the drive means such as electric motors. However, the main body of the suction port becomes larger than necessary and has a large weight, which poses a problem that becomes an obstacle to miniaturization.

The present invention has been made in view of the above-mentioned problems, and the traveling roller and the rotating brush are rotated by a single driving means in a predetermined direction with respect to the running direction of the suction port main body. Enables miniaturization, carpets,
Alternatively, the present invention provides a suction mortar for a vacuum cleaner, which can reliably assist the movement of a suction port body even on a surface to be cleaned such as a folding surface, and can improve dust collection efficiency.

[Structure of the invention]

(Means for Solving the Problems) The vacuum cleaner suction body according to claim 1 of the present invention includes:
A suction port main body having a suction chamber with a suction port opened on the lower surface, a rotating brush facing the suction port and rotatably supported, and a running roller rotatably supported on the lower surface, The mouth body is provided with an electric motor whose rotational direction can be switched by a detection means for detecting the traveling direction of the suction mouth body, and a transmission means is provided to the electric motor to detect the rotating brush and the traveling roller, respectively, which are detected by the detection means. It is rotated in a predetermined direction relative to the direction of rotation.

The vacuum cleaner suction body according to claim 2 of the present invention includes:
A rotating brush and a running roller are each coaxially supported.

In the vacuum cleaner suction body according to a third aspect of the present invention, the traveling roller is supported at a substantially intermediate position in the traveling direction of the suction port body.

(Function) The suction body of the vacuum cleaner of the invention according to claim 1 of the present invention is configured such that, during cleaning, the suction port body is moved over the surface to be cleaned while the traveling roller is grounded on the surface to be cleaned. When trying to run, the drive means rotates the running roller in the running direction according to the running direction detected by the detection means, and the suction port body runs smoothly, and can be operated with a light operating force and rotates in the running direction. On the other hand, the rotating brush rotated in a predetermined direction can lift and scrape the dust on the surface to be cleaned, allowing efficient cleaning. Further, the running roller and the rotating brush are rotated by one electric motor in a predetermined direction with respect to the running direction detected by the detection means, and the rotating brush and the running roller are each rotated by one electric motor. Therefore, the installation space for the electric motor can be reduced, the suction port body can be made smaller, and it is lighter and easier to operate.

Moreover, since the suction body of the vacuum cleaner according to the second aspect of the present invention supports the rotating brush and the running roller on the same axis, the space for installing the running roller can be reduced.

In addition, in the suction body of the vacuum cleaner according to the invention described in claim 3, since the traveling roller is supported at a substantially intermediate position of the suction port body in the running direction, the suction body can move forward or backward during cleaning. Even in the direction of travel, the suction port itself can be operated stably.

(Example) Next, the configuration of an example of the present invention will be described based on the drawings.

In FIGS. 1 and 2, reference numeral 11 denotes a horizontally elongated suction port body, and this suction port body 11 is composed of a lower main body case 12 and an upper main body case I3 coupled and fixed onto the lower main body case 12. . In the suction port main body 11, a horizontally elongated suction chamber 16 is defined at the front side, and a motor chamber 17 and an air passage chamber 18 are defined at the rear side.
Sections are formed on the sides.

Further, a suction port 2o is opened at the lower surface of the suction chamber 16.

In addition, a communication pipe 2 is provided at the rear center of the suction body 11.
I is supported by a rotating shaft 22 so as to be freely movable up and down at a predetermined angle. This communication pipe 21 has a front end rotatably fitted into the air passage chamber 18, and a rear part protruding rearwardly and outwardly from the suction body 11.
6 , and the interior thereof is communicated with this suction chamber 16 via an air passage chamber 18 .

Furthermore, the front end of a bent connecting pipe 25 is coaxially and rotatably fitted into the rear end of the communication pipe 21 .

This connecting pipe 25 is detachably connected to a hose connected to a vacuum cleaner main body (not shown) via an extension pipe, and the suction chamber 16 includes an air passage chamber 18, a communication pipe 21, and a connecting pipe 25.
, is connected to the dust collection chamber in the vacuum cleaner body via an extension pipe and a hose.

As shown in FIG. 3, at least one of the bearings 23 that rotatably supports the rotation shaft 22 of the communication tube 21 has an inclined surface 23a with the front and rear sides of the lower surface inclined forward and backward, respectively. 23b, and sheet-like pressure sensitive elements 26 and 27 are attached to these inclined surfaces 23a and 23b, respectively, to constitute the detection means 28.

Further, the support wall 24 that supports the bearing 23 is also formed with inclined surfaces 24m and 24b that are opposite to the inclined surfaces 23g and 23b of the bearing 23, respectively. .27 are in contact with each other. These pressure sensitive elements 26.
When 27 is subjected to pressure, its electrical resistance value decreases.

A rotary brush 31 is rotatably supported by a bearing 32 in the suction chamber 16 of the suction body 11, and a motor chamber 17 is provided in the suction body 11 at the rear of the rotary brush 31. A running roller 33 is rotatably supported by a rotating shaft 34 on both sides of the air passage chamber 18 on the front side, and this running roller 33 projects downward from an opening 35 opened on the lower surface of the suction body 11. It is designed to be rotated in contact with the surface to be cleaned.

Furthermore, the rotating brush 31 is provided in the motor chamber 17.
An electric motor 36 is provided, which rotates in forward and reverse directions to drive the motor. A belt 43 for power transmission is passed through the upper side of the pulley 41 fixed to the rotary brush 31, the lower side of the pulley 42 fixed to the end of the rotating brush 31, and the pulley 38 fixed to the output shaft 37 of the electric motor 36. A transmission means 44 is constructed, and the rotating brush 31 and the traveling roller 33 are rotated by this one transmission means 44.

Further, an electric wire for feeding power to the electric motor 36 is connected to a control section and a power supply section of the main body of the cleaner via a hose, an extension pipe, and a hose.

Next, the configuration of the drive means 61 for controlling the electric motor 36 will be explained based on FIG. 4. Note that this driving means 61 is built into the suction body 11.

A resistor 64.65, a diode 66°67, and a field effect transistor 68.69 are connected via a hose and an extension tube between both output ends of a rectifier circuit 63 provided in the vacuum cleaner body connected to an AC power source 62. A pair of series circuits are connected. Further, in the series circuit of both the resistors 64, 65 and the diodes 66, 67, an npn type transistor 172, the motor 36, and the diodes 73, 74 are connected.
The series circuits are connected in parallel. Furthermore, a pnp type transistor 576 and a resistor 77°78 are connected in series between the positive output terminal of the rectifier circuit 63 and the bases of both npn type transistors 71 and 72, respectively. .7
6 are connected to the resistor 64, 65 and the midpoint of the diodes 66, 67 via resistors 79, 110, respectively. Note that the transistors 68, 69 .
Protection diodes 81.71 and 72 are connected in parallel with each other.
82. 83.84 are connected. When one of the field effect transistors 68 is turned on, a current flows through the diode 66, and it becomes one of the pnp-type toss transistors, and the other of the npn-type toss transistors, and from this transistor 71. Current flows through the motor 36 to the diode 73. Also, when the other field effect transistor 69 is turned on, current flows through the diode 67, and the other pnp
As the type of transistor turns off, the other side becomes
The npi luminum type transistor turns on, and current flows from this transistor 72 to the diode 74 via the motor 36. In this way, by turning on and off the field effect transistors 68 and 69, the current flowing through the motor 36 is reversed, causing the motor 36 to rotate forward and backward. And both field effect transistors 68.69
If both are off, the electric motor 36 is stopped.

Further, both the pressure sensitive elements 26 and 27 are connected to the suction body 11.
A detection means 28 is configured to detect an operating force applied from the outside in the longitudinal direction at the rotation shaft 37 of the communication tube 21.

Reference numeral 92 denotes a detection control means, and this control means 92 receives a signal from the detection means 28 and drives a signal to rotate the traveling roller 33 in the forward direction when a forward operating force is applied to the suction body 11. Send to means 61 and suck Japanese body 1
When a backward operating force is applied to 1, the rear running roller 33
This is to send a signal to the drive means 61 to rotate the motor in the backward direction. That is, the detection control means 92 detects both pressure sensitive elements 2
6. Compare the resistance values of 27, and if the resistance value of the front pressure sensitive element 26 is smaller, one field effect transistor 6
A voltage is applied to the gate of field effect transistor 8 to turn on this transistor 68, and when the resistance value of the rear pressure sensitive element 27 is smaller, a voltage is applied to the gate of the other field effect transistor 69 to turn on this transistor 69. be.

The detection control means 92 determines from the resistance value of the pressure sensitive elements 26, 27 whether or not the pressure sensitive elements 26, 27 have received a pressure above a certain level, and only when the pressure has been received above a certain level is detected. The control means 92 is operated.

That is, this detection control means 92 controls the pressure sensitive element 26°2.
When the pressure applied to the field effect transistors 68 .
69 are both turned off.

Next, the operation of the above embodiment will be explained.

During cleaning, the tip of an extension tube connected to the cleaner body via a hose is connected to the connecting tube 25. Then, when the end of the hose on the extension pipe side is gripped and the electric motor 36 is driven, the driving roller 33 is rotated by the power transmission belt 43 while being in contact with the ground, and the rotating brush 31 is rotated by the driving roller 33. The suction body 11 rotates in the opposite direction to the surface to be cleaned, and the forward movement of the suction body 11 is assisted by the rotation of the traveling roller 33 on the surface to be cleaned. At this time, the suction Japanese body 1
As the communication pipe 21 rotates in the vertical direction with respect to 1,
By rotating the connecting pipe 25 bent in the circumferential direction with respect to the communicating pipe 21, the state in which the suction port 20 faces the surface to be cleaned can be easily maintained. Further, the rotating brush 31 lifts and scrapes dust from the surface to be cleaned, such as a carpet. Then, by driving the electric blower installed inside the vacuum cleaner body, dust is sucked into the suction port 2 of the Japanese body 11.
0 into the suction chamber 16, and is guided into the dust collection chamber of the main body of the vacuum cleaner via the air passage chamber 18, the communication pipe 21, the connecting pipe 25, the extension pipe and the hose.

When trying to move the suction body 11 forward over the surface to be cleaned, as shown by arrow F in FIG. It is transmitted from the connecting pipe 25 to the bearing 23 via its rotation shaft 22, and further,
As shown by arrow F2, the suction is transmitted from this bearing 23 to the Japanese body 11 via the front pressure sensing element 26. Since frictional resistance is applied to this suction body 11 from the surface to be cleaned, at least a portion of the operating force is applied as pressure to the front pressure-sensitive element 26 as described above. As a result, the resistance value of the front pressure sensitive element 26 decreases in accordance with this pressure. −
On the other hand, when trying to move the suction body 11 backwards,
Conversely, as shown by arrow F3, the force pulling backward is
As shown at 4, pressure is applied to the pressure sensitive element 27 on the rear side. As a result, the pressure sensitive element 27 on the rear side responds to this pressure.
resistance value decreases.

In addition, on a floor surface such as a carpet that has poor running properties, that is, a surface to be cleaned that has a large resistance to the running of the suction body 11, the operating force applied to the suction body 11 in the front-rear direction becomes large. As a result, the pressure applied to the pressure sensitive elements 26 and 27 also increases, but the pressure sensitive elements 26 and 26 corresponding to this pressure
．． When the resistance value of the motor 27 decreases below a certain set value, the detection control means 92 controls the rotation direction of the electric motor 36 of the drive means 61 in response to a signal from the detection means 28 . That is, when a forward operating force is applied to the suction body 11, the resistance value of the front pressure sensing element 26 is lower than the resistance value of the rear pressure sensing element 27, so that the base of the field effect transistor 68 When a voltage is applied, this transistor 68 is turned on, and in conjunction with this, transistors 71 and 75 are turned on, and the motor 36 rotates in the normal direction. Therefore, this electric motor 36 moves the traveling roller 3
3 is rotationally driven in the forward direction, and as a result, the suction body II moves forward and the rotating brush 31 is rotated in the reverse direction. On the other hand, when a backward operating force is applied to the suction body 11, the resistance value of the rear pressure sensitive element 27 is lower than the resistance value of the front pressure sensitive element 26, so that the base of the field effect transistor 69 When a voltage is applied, this transistor 69 is turned on, and in conjunction with this, the transistors 72 and 76 are turned on, and the electric motor 36 is driven in reverse, and the traveling roller 33 is driven to rotate in the reverse direction, and the suction As the Japanese main body 11 retreats, the rotating brush 3
1 is rotated in the opposite direction to the traveling roller 33.

In the embodiment, the transmission means 44 includes a belt for transmitting power to the electric motor 36, a pulley 38 of the output shaft 37, a tension roller 39, a pulley 41 of the rotating shaft 34 of the traveling roller 33, and a pulley 42 of the rotating brush 31. 43
However, as shown in FIG.
3 is suspended, and the gear 47 of the output shaft 46 provided on the other end side of the output shaft 37 of the electric motor 36 via a reversing gear mechanism meshes with the gear 48 provided on the traveling roller 33. At .44, the traveling rollers 33 and the rotating brush 31 can be respectively linked to the electric motor 36. In this structure, the diameter of the gear 4B of the running roller 33 is made larger than the diameter of the rotating brush 31, and the running roller 33
By making the diameter smaller than the diameter of the rotating brush 31, the force of the running roller 33 on the surface to be cleaned is greater than that of the rotating brush 31, the force in the running direction is increased, and running performance can be increased.

Further, as shown in FIG. 6, a belt 43 is suspended around a pulley 38 of an output shaft 37 of an electric motor 36 and a pulley 41 of a rotating shaft 34 of a running roller 33. It is also possible to adopt a configuration in which the belt 43 is suspended around the pulley 49 and the pulley 42 provided on the rotating brush 3I.

Next, the structure of another embodiment will be explained with reference to FIGS. 7 to 9.

Pulley 42 of rotating brush 31 and output shaft 3 of electric motor 36
A belt 43 is suspended around the pulley 38 of No. 7, and a running roller 33 is rotatably supported at both ends of the rotating brush 31, and a gear 51 is provided coaxially with the rotating brush 3I and a running roller 33 is provided coaxially with the rotating brush 31. A plurality of gears 53 rotatably attached to the rotary brush 31 are meshed with the internal gears 52.

In this configuration, the rotating brush 31 is rotated via the belt 43 by the drive of the electric motor 36, and the internal gear 52 meshed with the gear 51 rotated by the rotation of the rotating brush 31 via the gear 53 is connected to the rotating brush 31. The running roller 33 is rotated in the running direction of the suction body j1, and the rotating brush 31 is rotated in the opposite direction to the running direction.

In the above embodiment, the rotating brush 31 is rotated in the direction opposite to the running direction of the suction body 11, but it is also possible to rotate the rotating brush 31 in the same direction as the running roller 33. .

〔Effect of the invention〕

According to the invention of claim 1, during cleaning, when the suction body is made to run on the surface to be cleaned with the traveling roller in contact with the surface to be cleaned, the detection means detects that The running roller is rotated in the running direction by the driving means in accordance with the running direction, and the suction body runs smoothly.It can be operated with a light operating force and is covered with a rotating brush that is rotated in a predetermined direction with respect to the running direction. Dust on the cleaning surface can be lifted up and scraped into the surface, allowing for efficient cleaning.

Further, the running roller and the rotating brush are rotated by one electric motor in a predetermined direction with respect to the running direction detected by the detection means, and the rotating brush and the running roller are each rotated by one electric motor. Therefore, the installation space for the electric motor can be reduced, the suction unit can be made smaller, and it is lighter and easier to operate.

According to the second aspect of the invention, since the rotating brush and the running roller are each coaxially supported, the space for disposing the running roller can be reduced in size.

According to the third aspect of the invention, since the running roller is supported at a substantially intermediate position in the running direction of the suction body, the suction body can move in either the forward or backward direction during cleaning.
The suction body can be operated stably.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a vacuum cleaner showing an embodiment of the present invention, with the upper cover of the suction port removed, FIG. 2 is a vertical sectional view of the same, and FIG. 3 is a perspective view of the detection means of the same. FIG. 4 is a circuit diagram of the same as above, FIG. 5 is a perspective view of a transmission means showing another embodiment of the present invention, FIG. 6 is a perspective view of a transmission means showing another embodiment of the invention, and FIG. 7 8 is a partially cutaway plan view of the suction port body showing another embodiment of the present invention, FIG. 8 is a perspective view showing a transmission means between the rotating brush and the traveling roller, and FIG. 9 is the rotating brush. FIG. 11... Suction body, 16... Suction chamber, 28... Detection means, 31... Rotating brush, 33... Traveling roller,
36...Electric motor, 44...Transmission means. σl Hayabusa member

Claims (3)

[Claims] (1) A suction port body having a suction chamber with a suction port opened on the lower surface, a rotating brush rotatably supported facing the suction port, and a running roller rotatably supported on the lower surface. , the suction port body is provided with an electric motor whose rotating direction can be switched by a detection means for detecting the running direction of the suction port body; A suction mouth body for a vacuum cleaner, characterized in that the suction mouth body is rotated in a predetermined direction in conjunction with a rotation direction detected by a vacuum cleaner. (2) The suction mouth body for a vacuum cleaner according to claim 1, wherein the rotating brush and the traveling roller are each coaxially supported. (3) The suction mouth body for a vacuum cleaner according to claim 1, wherein the running roller is supported at a substantially intermediate position in the running direction of the suction mouth body.