JPH0137140B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a suction port body for a vacuum cleaner.

There are various types of vacuum cleaner suction ports, including horizontal ones that suck in a wide area, vacuum cleaners that suck in dust from the corners of the room, and others. However, it is troublesome to prepare a plurality of suction ports depending on the purpose and to replace the suction ports each time whether to suck in dust over a wide area or to intensively suck in dust, etc. from a corner of a room. As the suction port most often used for floor cleaning, a main body is connected to the dust collection part of the vacuum cleaner via a suction hose, and this main body has a horizontally long tunnel-shaped suction air path that opens toward the floor. form,
A central opening connected to the vacuum cleaner is formed in the center of this suction air path, and a front opening that opens forward in the center of this suction air path and small openings that open toward the floor located on both outsides. Furthermore, a horizontally long opening is formed along the front edge of the main body and communicates with the front opening. Open the front opening that communicates with the main unit, and if you want to suck in dust from the corner of the room from the side of the main unit, switch the valve and suck the dust from the path from the opening on the side to the center opening via the tunnel-shaped suction air path. There are some that are designed to absorb A typical example of this type of structure is shown in Japanese Patent Application Laid-open No. 120165/1983, but when dust is sucked in from the side, the side openings open only to the floor, The problem is that the opening is blocked by the opening, so that even if the main body is lifted off the floor, dirt cannot be removed from the opening.

This invention was made in view of these points, and it provides a suction port for a vacuum cleaner that can suck up dust over a wide area, increase the suction power from the outside, and prevent dust from clogging. The purpose is to nourish the body.

This invention forms a horizontally elongated suction air passage on the bottom surface of the main body, forms a suction port in the center of this suction air passage, and provides a control valve that changes the air passage cross-sectional area of the suction air passage. The air passage cross-sectional area of the suction air passage is adjusted by this, and a horizontally elongated valve body is provided on the front edge of the main body, and the gap between the front edge of the main body and the floor surface is varied by this valve body. You can suck up dirt from the corners of the machine from the sides of the main unit, or you can vacuum up dirt from a wide area.
You can change the suction route depending on the purpose of use so that dust is sucked intensively from the center of the main body, and adjust the suction wind force arbitrarily. Since the entire body is open to the floor and the outer end is open outward, even if the outer end of the suction air path is clogged with debris, the main body can be lifted off the floor to clear the blockage. It is composed of

An embodiment of the present invention will be described based on the drawings. 1 is the main body. This main body 1 is the upper case 2
and a lower case 3 are assembled with a packing 4 in between. A T-shaped connecting tube 5 serving as a connecting portion is held between the upper case 2 and the lower case 3 so as to be movable up and down with an axis in the left and right direction. A swing tube 6, which is connected to a dust collecting section of a vacuum cleaner (not shown) via an extension tube or a suction hose, is fitted into the rear part of the connecting tube 5 so as to be able to swing freely in the left and right directions. Further, wheels 7 are attached to both rear sides of the main body 1, and rollers 8 are rotatably attached to both sides of the bottom surface. Furthermore, a valve body 9 made of a horizontally long rubber plate or the like is provided along the front edge of the main body 1.
The upper edge of the valve body 9 is held by a crosspiece 10, and is held in a slit hole 10b formed in the main body 1 so as to be vertically movable while being urged upward by a spring 10a.

Next, a horizontally elongated suction air passage 12 along the brush 11 is formed at the bottom of the main body 1. The entire surface of this suction air passage 12 is open toward the bottom surface, and both ends thereof are open toward the outside. A suction port 13 communicating with the connecting pipe 5 is formed in the center of the suction air passage 12 .

Thus, the control valves 14 and 15 that vary the air passage cross-sectional area of the suction air passage 12 are urged forward by the spring 16 and are held movably in the front-rear direction. These control valves 14 and 15 have pins 18 located on both sides of the suction air passage 12 and protruding from long holes 17 formed in the ceiling surface of the suction air passage 12. Further, a slider 19, which is an operating body, is held in the main body 1 so as to be slidable while being biased toward one side by a spring 20. Furthermore, a dial 21 serving as an operating section is attached to the top surface of the main body 1, and a gear 23 that meshes with a rack 22 formed on the slider 19 is coaxially connected to this dial 21. A notch 24 is formed in a part of the outer periphery of this gear 23. Further, on both sides of the slider 19, there are pressing parts 25 and 26 as regulating valve pressing parts that press the pin 18 backward, and a valve pressing part that presses a protrusion 27 formed on the upper surface of the crosspiece 10 of the valve body 9. A pressing part 28 as a part is formed. A cylinder 30 is formed on the ceiling surface of the suction air passage 12 and holds the steel ball 29 so as to be movable up and down while urging the steel ball 29 upward. This steel ball 29 engages with one of a number of concave portions arranged radially on the lower surface of the gear 23 to stabilize the gear 23 together with the dial 21 at any rotational position.

In such a configuration, cleaning is performed by connecting the swirl tube 6 to the dust collecting section of a vacuum cleaner. That is, outside air is sucked into the suction port 13 from the suction air path 12 and is collected in the dust collecting section.

In the state shown in FIG. 6a, the control valves 14 and 15 are moved forward, and the cross-sectional area of the suction air passage 12 is maintained at its maximum on both sides. Further, the crosspiece 10 is released by the pressing portion 28 of the slider 19, and the protrusion amount S of the valve body 9 becomes zero, and the gap with the floor surface is large. Therefore, it sucks in dust over a wide area.

From this state, operate dial 21 to shift gear 23.
When turned, the slider 19 moves to the left, the pressing part 26 on the right pushes the pin 18 on the right, the control valve 15 on the right gradually narrows the cross-sectional area of the suction air passage 12, and the gear In the state shown in Figure 6b, where 23 has rotated 1/4,
The air passage cross-sectional area on the right side of the suction air passage 12 becomes zero.
Also, at this time, since the pressing part 28 of the slider 19 presses the protrusion 27 of the crosspiece 10, the valve body 9 descends against the force of the spring 10a, and the gap between the front edge of the main body 1 and the floor is zero. .

Furthermore, when the slider 19 is slid to the left, the left pressing part 25 pushes the left pin 18 backward, and the left control valve 14 also gradually narrows the air passage cross-sectional area of the suction air passage 12. 6th with 1/2 rotation of 23
In the state shown in FIG. c, the air passage cross-sectional area of the suction air passage 12 is maintained at zero on both the left and right sides. The amount of protrusion S of the valve body 9 is also large, so that there is no gap with the floor surface.

Further, when the slider 19 is slid to the left, the right pressing part 26 releases the pin 18, and the right regulating valve 15 is slid forward little by little by the force of the spring 16, thereby forming the air passage of the suction air passage 12. In the state shown in FIG. 6d, in which the cross-sectional area is enlarged and the gear 23 rotates 3/4, the cross-sectional area of the air passage on the right side of the suction air passage 12 is maintained at its maximum. The protrusion amount S of the valve body 9 is also maintained large as usual.

When the gear 23 is further turned, the notch 24 can be easily removed 22.
Since the slider 19 faces the spring 20
It returns to the right by the force of , returning to the state shown in Figure 6a.

Therefore, if you want to suck in dust from a wide area, you can clean it as shown in Figure 6 a, and if you want to suck in dust from the corner of the room, you can clean it in the suction air path as shown in Figure 6 b or d. It is sufficient to set the cross-sectional area of the air passage on one side of 12 to zero and increase the suction wind force from the other side. It is also possible to close one side of the suction air passage 12 and narrow down the cross-sectional area of the air passage on the other side within a range that does not become zero, thereby making it possible to further strengthen the suction wind force and suck out dust from the room. Moreover, since the protruding amount S of the valve body 9 is large and the gap with the floor is closed, the suction wind force becomes even stronger. In addition, when sucking dust from the end of the suction air passage 12, the gap between the main body 1 and the floor is small and the dust may get caught at the end of the suction air passage 12. Since the entire opening is open toward the floor surface, even if the dirt is a little large, the main body 1 is lifted off the floor surface, so that the dirt is separated from the end of the suction air passage 12 and is sucked in through the suction port 13.

Furthermore, since the control valves 14 and 15 are located on both sides of the suction air passage 12, it is possible to close both sides of the suction air passage 12 as shown in FIG. be.

When cleaning a carpet, the main body 1 sinks to the surface of the carpet, so the valve body 9 is retracted upward to enlarge the gap with the floor as shown in FIG. It is sufficient to inhale over a wide area while expanding the cross-sectional area of the road. In this case, adjustment of the air passage cross-sectional area of the suction air passage 12 and adjustment of the gap between the front edge of the main body 1 and the floor surface can be performed with one touch by simply turning one dial.

Note that the slider 19 may be provided with a knob (not shown) that protrudes outward from the main body 1, and this knob may be used as the operating section.

Since this invention is constructed as described above, the air passage cross-sectional area of the suction air passage can be adjusted by the control valve, and the gap between the front edge of the main body and the floor surface can be adjusted by the valve body. This can be used to suck up dust from the corners of the room from the outer edge of the suction air duct, to suck up dust over a wide area throughout the suction air duct, or to suck up dust intensively from the center of the suction air duct. The suction path can be changed depending on the purpose and the suction wind force can be adjusted arbitrarily.Moreover, the entire suction air path is open to the floor and both ends are open outward, so the suction air path Even if the outer end of the main body is clogged with dirt, the blockage can be cleared by lifting the main body off the floor.

[Brief explanation of drawings]

The drawings show one embodiment of the invention.
The figure is a reduced perspective view, Figure 2 is a perspective view with a part cut away, Figure 3 is a central vertical side view, Figure 4 is a side vertical side view, and Figure 5 is a diagram showing a dial rotation prevention means. FIG. 6 is an operation explanatory diagram showing the operation of the slider in a plan view and the operation of the control valve and the valve body in left and right longitudinal side views. 1...Main body, 5...Connection pipe (connection part), 9...
Valve body, 12... Suction air path, 13... Suction port, 14
~15...Control valve, 19...Slider (operating body),
21... Dial (operation part), 25, 26... Control valve pressing part, 28... Valve body pressing part.

Claims (1)

[Claims] 1 At the bottom of the main body, where the connection part that connects to the dust collection part of the vacuum cleaner is provided, there is a horizontally long suction air passage that opens entirely toward the floor and both ends open outward, and this suction air passage. A suction port is formed that communicates the center part of the passage with the connecting part, and a horizontally long valve body that opens and closes a gap with the floor surface at the front edge of the main body is biased upward so as to be freely movable up and down. A control valve for varying the cross-sectional area of the air passage of the suction air passage is provided in a movable manner, and an actuating body in which a valve body pressing portion for pressing the valve body to protrude downward is formed on the main body is movable. 1. A suction port body for a vacuum cleaner, characterized in that a regulating valve pressing portion is formed on the actuating body to engage and disengage the regulating valve when the valve body moves when the valve body is pressed.