JPH0137139B2 - - 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 that opens toward the floor on the bottom surface of the main body that has a connection part that is connected to a dust collection part that is maintained in a negative pressure state, and both outer ends of this suction air passage. A side opening that opens outward is formed at the side, and a suction port that communicates with the connecting portion is formed in the center, and a side opening that moves between the side opening and the suction port is formed in the suction air path and is received on the upper surface. A control valve is provided in which a control valve is formed, an actuating body having a pressing portion having an inclined surface that abuts the receiving portion of the control valve is provided in a movable manner, and an operating body for moving the actuating body is provided on the outside of the main body. By protruding from the side of the main unit, you can suck up dirt from the corner of the room from the side of the main unit.
The suction route can be changed depending on the purpose of use, such as sucking dust over a wide area or concentrating on dust from the center of the main body, and the suction wind force can be arbitrarily adjusted, and the dust can be sucked from the outer edge of the suction air path. Even in cases where the suction air passage is completely open to the floor and the outer end opens outward, even if the outer end of the suction air passage is clogged with debris, the main unit can be lifted off the floor to remove the clog. It is designed to solve the problem.

A first embodiment of this invention will be described based on FIGS. 1 to 7. 1 is the main body. This main body 1 is constructed by assembling an upper case 2 and a lower case 3 with a packing 4 in between. Also, upper case 2
A connecting pipe 5, which is a connecting part connected to a dust collecting part of the vacuum cleaner, is rotatably held between the lower case 3 and the lower case 3. Next, a horizontally elongated suction air passage 6 that opens toward the floor is formed on the bottom surface of the main body 1. This suction air passage 6 has a front wall 6a and a rear wall 6b.
A suction port 7 communicating with the connecting pipe 5 is formed in the center thereof, and side openings 8 opening toward the outside are provided at both ends. 9 is formed. Furthermore, rollers 1 located on both front sides are provided on the bottom surface of the main body 1.
0 and a brush 11 along the rear edge of the suction air path 6 are provided.

Therefore, the ceiling walls 6c on both sides of the suction air passage 6
Control valves 12 and 13 are slidably attached to the control valves 12 and 13 while being urged in a retracting direction (upward) by a spring 14. Inside the main body 1, a slider 15 as a horizontally elongated actuating body is provided with a spring 1.
6, it is held slidably while being biased toward one side. Furthermore, a dial 17 as an operating body is attached to the top surface of the main body 1, and this dial 1
A gear 19 that meshes with a rack 18 formed on the slider 15 is coaxially connected to the slider 7. A notch 20 is formed in a part of the outer periphery of this gear 19. Furthermore, pressing portions 22 and 23 are formed on the lower surface of the slider 15 and have inclined surfaces 22a and 23a that press down protrusions 21 formed on the upper surfaces of the control valves 12 and 13 as receiving portions. As shown in FIG. 7, a cylinder 25 is formed on the ceiling surface of the suction air passage 6, and holds the steel ball 24 so as to be movable up and down while urging the steel ball 24 upward. This steel ball 24 engages with one of a number of recesses arranged radially on the lower surface of the gear 19, thereby stabilizing the dial 17 and the gear 19 at any rotational position. A downward step 26 is formed at the lower part of the control valves 12, 13 by reducing the diameter of the lower part, and an upward step 27 that closely contacts the step 26 fits and holds the control valves 12, 13. For this purpose, a fitting portion 28 is formed on the main body 1 (FIG. 6).

In such a configuration, cleaning is performed by connecting the connecting pipe 5 to the dust collecting section of the vacuum cleaner using a suction hose or an extension pipe. That is, outside air is sucked into the suction port 7 from the suction air path 6 and is collected in the dust collecting section.

In the state shown in FIG. 4a, the control valves 12 and 13 are retracted upward, and both side openings 8 and 9 communicate with the suction port 7. Therefore, dirt can be sucked in over a wide area.

When the dial 17 is rotated together with the gear 19 from this state, the slider 15 slides to the left as shown in FIG. As a result, the control valve 13 gradually narrows down the air passage cross-sectional area of the suction air passage 6, and when the gear 19 rotates 1/4, the connection between the right side opening 9 and the suction port 7 is cut off. The left side opening 8 and the suction port 7 are maintained in a communicating state.

Furthermore, when the dial 17 is rotated together with the gear 19 as shown in FIG. . When the gear 19 rotates 1/2, the suction port 7 and the openings 8 and 9 on both sides are cut off.

Furthermore, when the dial 17 is rotated as shown in FIG.
2 continues to press the control valve 12, but the pressing portion 23 passes over the protrusion 21 of the control valve 13. As a result, the control valve 13 is returned upward by the force of the spring 14. Therefore, only the right side opening 9 and the suction port 7 are maintained in a communicating state.

Furthermore, when the dial 17 is turned, the notch 20 of the gear 19 faces the rack 18, so the slider 15 slides to the right by the force of the spring 16 and is maintained in the state shown in FIG. 4a.

Therefore, if you want to suck in dust from a wide area, you can clean it in the state shown in Figure 4a, and if you want to suck in dust from the corner of the room, you can clean it in the condition shown in Figure 4b or 13 as shown in Figure 4b or d. This is done by closing one side of the suction air passage 6 and increasing the suction wind force from the side opening 8 or 9 on one side. It is sufficient to selectively block the space between either one of the side openings 8 or 9 and the suction port 7, but since both sides can be selectively opened and closed as in this embodiment, it can be used regardless of the left or right side. By selecting the control valves 12 and 13 that should be closed when sucking in dust from both outer sides, cleaning can be performed whether the vehicle is moving forward or backward. In this case, although the gap between the main body 1 and the floor is small, since the side openings 8 and 9 at both ends of the suction air passage 6 open outward, even slightly large debris can be sucked into the suction air passage 6. It will be done. When openings that open only toward the floor are formed on both outsides of the main body 1 as in the conventional case,
When large debris is clogged, it cannot be removed unless it is removed by hand, but according to the present invention, even if debris is pressed against the floor on both sides of the main body 1, it can be sucked in by simply lifting the main body 1 a little.

Furthermore, as in this embodiment, two control valves 1
2 and 13 can be maintained in a closed state at the same time, it is also possible to locally suck in dirt from the suction port 7 with a strong suction force.

Furthermore, the stepped portions 26 of the closed regulating valves 12 and 13 are in close contact with the stepped portion 27 of the fitting portion 28, so that the airtightness when closed is high.

Next, a second embodiment of the present invention will be described based on FIGS. 8 and 9. Components that are the same as those in the embodiment described above are designated by the same reference numerals, and description thereof will be omitted (the same applies hereinafter).
In this embodiment, control valves 29 and 30 facing the rear wall 6b are supported on the front wall 6a on both sides of the suction air passage 6 so as to be movable back and forth while being biased forward by a tension spring 31. These control valves 29, 30
is a long hole 32 formed in the ceiling wall 6c of the suction air passage 6.
A pin 33 that protrudes from is provided upright. Furthermore, the slider 15 is provided with pins 3 of the control valves 29 and 30.
Pressing portions 34 and 35 having inclined surfaces 34a and 35a for pushing 3 backward are formed.

In such a configuration, the state shown in FIG. 9a is a state in which the control valves 29 and 30 slide forward by the force of the tension spring 31, and the cross-sectional area of the air passage on both sides of the suction air passage 6 is maintained at its maximum. be.

From this state, as shown in FIG. 9b, slider 1
5 to the left, the inclined surface 35a of the right pressing part 35 pushes the pin 33, and the right control valve 3
0 gradually narrows the cross-sectional area of the suction air passage 6 and eventually closes the right side of the suction air passage 6.

When the slider 15 is further slid to the left, the inclined surface 34a of the left pressing part 34 pushes the pin 33, and the left regulating valve 29 gradually narrows the air passage cross-sectional area of the suction air passage 6. As shown in Figure c, the left side of the suction air passage 6 is closed.

Furthermore, when the slider 15 is slid to the left, only the pin 33 of the right control valve 30 is released from the pressing part 35, as shown in FIG. slides forward to expand the cross-sectional area of the suction air passage 6.

Furthermore, when the gear 19 is turned to slide the slider 15 to the left, the notch 20 faces the rack 18, so that the slider 15 moves towards the spring 1.
It returns to the right by the force of 6 and is maintained in the state shown in FIG. 9a.

Next, FIG. 10 shows a third embodiment of the present invention. In this embodiment, front walls 6a are provided on both sides of the suction air passage 6.
The control valves 36 and 37 facing the compression spring 3
8, it is supported on the rear wall 6b so as to be movable back and forth while being biased forward. And slider 1
A pressing portion 39 having an inclined surface 39a that presses the pin 33 of the left regulating valve 36 is formed at 5, and the inclined surface 4 that presses the pin 33 of the right regulating valve 37.
Two pressing parts 40 and 41 having pressures 0a and 41a are formed.

Therefore, the pin 33
When it is pushed backward by 1, the control valve 3
6, 37 open the air passage cross-sectional area of the suction air passage 6 to the maximum, and when the pin 33 is released from the pressing parts 39, 40, 41, the control valves 36, 37 open the air passage cross-sectional area of the suction air passage 6. Narrow down the area. Pressing parts 39, 40, 41
In FIG. 10a, both the left and right sides of the suction air passage 6 are open, and the protrusion length and arrangement state of the slider 1 are as follows.
In FIG. 10b, where 5 moves leftward, the pressing part 40
In FIG. 10c, the left side of the suction air passage 6 is opened and the right side is closed by releasing the pin 33, and the slider 15 further moves to the left. In FIG. 10 d, both sides are closed and the slider 15 moves leftward, the right pin 33 is pressed by the pressing part 41 and the suction air path 6 is closed.
The cross-sectional area of the air passage on the right side is set to be expanded.

In the embodiment described above, the control valves are arranged on both sides of the suction air passage, but the control valves may be provided on either side. Further, the left and right control valves may open and close at the same time.

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 thereby dust in the corner of the room can be sucked in from the outer end of the suction air passage, or The suction route can be changed depending on the purpose of use, such as sucking dust from a wide area throughout the air passage or concentrating on dust from the center of the suction air passage, and the opening cross-sectional area of the suction air passage can be adjusted continuously using a control valve. The suction air force can be adjusted arbitrarily by changing the suction air flow to Even if it becomes clogged, the main body can be lifted off the floor to clear the clog.

[Brief explanation of drawings]

Fig. 1 shows a first embodiment of the invention, and is a perspective view of the main body, Fig. 2 is a perspective view of the back side of the main body, and Fig. 3 is a partially cutaway plan view of the main body.
FIG. 4 is a longitudinal sectional front view showing the operation of the control valve taken along line A-A in FIG. 3, FIG. 5 is an enlarged vertical sectional side view taken along line B-B in FIG.
The figure is an enlarged vertical side view of the line C-C in Fig. 3, Fig. 7 is an enlarged longitudinal side view of the line D-D in Fig. 3, and Fig. 8 is an enlarged longitudinal side view of the line C-C in Fig. Fig. 9 is an enlarged perspective view with a part of the main body cut away, showing an embodiment, and Fig. 9 is an operation explanatory diagram showing the operation of the slider in a plan view, and the operation of the control valve at this time is shown in left and right longitudinal side views. , and FIG. 10 are operation explanatory diagrams relating to a third embodiment of the present invention, showing the operation of the slider in a plan view and showing the operation of the control valve at this time in left and right vertical side views. 1...Main body, 5...Connection pipe (connection part), 6...
Suction air path, 6a...front wall, 6b...rear wall, 6
c... Ceiling wall, 7... Suction port, 12-13... Control valve, 29-30... Control valve, 36-37... Control valve.

Claims (1)

[Claims] 1. A horizontally elongated suction air passage that opens toward the floor is formed on the bottom of the main body that has a connection part that is connected to the dust collection part that is maintained in a negative pressure state, and there are a side opening that opens toward the direction, and a suction port that communicates with the connecting portion in the center, and a receiving portion that moves between the side opening and the suction port in the suction air path and forms a receiving portion on the top surface. a control valve, a movable actuating body having a pressing portion having an inclined surface that abuts the receiving portion of the control valve, and an operating body for moving the actuating body protruding outside the main body. A suction port body for a vacuum cleaner, characterized in that it is provided with a suction port body.