JPH0137138B2 - - 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 collecting 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. It's something that aims 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 outwardly and a suction port that communicates with the connecting portion in the center, and a closed position in which the suction air path is closed between the side opening and the suction port; a shutter that moves to an open position that opens a space between the side opening and the suction port and has a receiving portion formed on its upper surface;
A movable actuating body having a pressing part that comes into contact with the receiving part of the shutter and positions it at both the positions is provided, and an operating body for positioning the actuating body at both the positions is provided to protrude outside the main body. This allows the shutter to be opened and sucked in from a wide area, and the shutter closed and sucked in with a strong suction wind from one side opening. In addition, even when sucking dust from both outside sides, the side openings at both ends of the horizontally elongated suction air path face outward. By opening the main body, the main body can be lifted off the floor to eliminate clogging with dirt.

A first embodiment of this invention will be described based on FIGS. 1 to 8. 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,
A suction port 7 communicating with the connecting pipe 5 is formed in the center of the suction air passage 6, and side openings 8, 9 opening toward the outside are formed at both ends. Furthermore, rollers 10 located on both front sides and a brush 11 along the rear edge of the suction air passage 6 are provided on the bottom surface of the main body 1.

Therefore, there are shutters 1 on both sides of the suction air passage 6.
2 and 13 are attached so as to be slidable while being biased in the retracting direction (upward) by a spring 14. Inside the main body 1, a slider 15 as a horizontally elongated actuating body is held so as to be slidable while being biased toward one side by a spring 16. Further, a dial 17 is attached to the upper surface of the main body 1, and a gear 19 that meshes with a rack 18 formed on the slider 15 is coaxially connected to the dial 17 as an operating body. This gear 1
A notch 20 is formed in a part of the outer periphery of 9.
Furthermore, pressing portions 22 and 23 are formed on the lower surface of the slider 15 to press down protrusions 21 as receiving portions formed on the upper surfaces of the shutters 12 and 13. 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 the recesses 26 formed on the lower surface of the gear at positions dividing the circumference into four equal parts, thereby determining the rotational position of the dial 17 and the gear 19. A downward step portion 27 is formed at the lower part of the shutters 12 and 13 by reducing the diameter of the lower portion, and an upward step portion 28 that is in close contact with this step portion 27 is formed at the bottom of the shutters 12 and 13.
2 and 13 in a fitting portion 29 formed in 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. 8a, the shutters 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.

From this state, when the dial 17 is rotated 1/4 of a turn together with the gear 19, the slider 15 slides to the left as shown in FIG. This results in
The shutter 13 blocks the right side opening 9 and the suction port 7. The left side opening 8 and the suction port 7 are maintained in a communicating state.

Furthermore, as shown in FIG.
further slides to the left and presses down the shutters 12, 13 with the pressing parts 22, 23. Therefore, the suction port 7 and the openings 8 and 9 on both sides are blocked.

Further, when the dial 17 is turned 1/4 of a turn as shown in FIG. pass through. As a result, the shutter 13 is moved by the spring 14.
It returns upwards due to the force of. 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. 8a.

Therefore, if you want to suck in dust from a wide area, you can clean it in the condition shown in Figure 8a, and if you want to suck in dust from the corner of the room, you can use the shutter 12 or 13 as shown in Figure 8b 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. It is possible to select the shutters 12 and 13 that should be closed when sucking in dust from both outer sides, and to perform cleaning whether 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 sides of the main body 1 as in the past, when large debris becomes clogged, it cannot be removed unless it is removed by hand, but according to the present invention, on both sides of the main body 1. Even when dirt is pressed against the floor surface, it can be sucked in by simply lifting the main body 1 a little.

Furthermore, as in this embodiment, two shutters 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 27 of the shutters 12 and 13 in the closed state are in close contact with the stepped portions 28 of the fitting portion 29, so that the shutters 12 and 13 have high airtightness when closed.

Next, a second embodiment of the present invention will be described based on FIGS. 9 and 10. The same parts as in the previous embodiment are designated by the same reference numerals, and the description thereof will be omitted. In this embodiment, a shutter 30 is attached to the suction air passage 6 so as to be rotatable in the left and right directions about a fulcrum 31.
This shutter 30 is urged in the closing direction by a spring 32. Further, downward step portions 33 are formed on both side edges of the shutter 30, and upward step portions 34 are formed on both sides of the suction air passage 6 to join these step portions 33 to improve sealing performance. ing. Since the shutter 30 rotates around the fulcrum 31, the stepped portion 34 is also formed along an arc around the fulcrum 31. The slider 15, which slides when the dial 17 is rotated, is provided with a pressing portion 36 that contacts a lever 35, which serves as a receiving portion connected to the fulcrum 31 of the shutter 30, and rotates the shutter 30 in the closing direction.

Therefore, the dial 17 is rotated together with the gear 19 and the slider 15 is slid to open and close the shutter 30, but the timing of opening and closing between the side openings 8 and 9 and the suction port 7 is the same as in the previous embodiment. .

Since this invention is configured as described above, the shutter, which is moved through the operating body by operating the operating body, selectively moves between the side openings formed at both ends of the suction air passage and the suction port in the center. Therefore, when using the entire suction air path to suck in dust over a wide area, when closing one side opening and increasing the suction force from the other side opening to suck in dust, or when using both side openings, It can be used in various ways depending on the situation, such as when dust is intensively sucked in from the suction port in the center.Furthermore, even when dust is sucked in from the outside of the suction air path, the side opening can be used on the outside and bottom. Since the main body is opened to the floor, it has the effect that it is possible to eliminate clogging with dirt simply by lifting the main body off the floor.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the main body of the first embodiment of the present invention seen from the top, Fig. 2 is a perspective view of the main body seen from the back, and Fig. 3 is a partially cutaway view of the main body. 4 is a plan view showing the inside of the main body, FIG. 4 is a longitudinal sectional front view taken along line A-A in FIG. 3, and FIG. 5 is an enlarged vertical sectional side view taken along line BB in FIG. Figure 6 is an enlarged vertical side view of the line C-C in Figure 3, Figure 7 is an enlarged vertical side view of the line D-D in Figure 3, and Figure 8 is the opening/closing operation of the shutter. FIG. 9 is an enlarged longitudinal sectional side view of the main body according to a second embodiment of the invention, and FIG. 10 is a partially enlarged longitudinal sectional front view. 1...Main body, 5...Connection pipe (connection part), 6...
Suction air path, 7... Suction port, 8-9... Side opening, 1
2-13...shatter, 30...shatter.

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 closed position that closes the space between the side opening and the suction port in the suction air path; A shutter is provided that moves to an open position that opens the space between the shutter and the suction port and has a receiving portion formed on its upper surface, and an actuating body that has a pressing portion that comes into contact with the receiving portion of the shutter and positions the shutter in both positions. 1. A suction port body for a vacuum cleaner, characterized in that an operating body is movably provided and protrudes from the main body for positioning the operating body in both of the positions.