JPH0137142B2 - - Google Patents

Description

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

Conventionally, the main body connected to the dust collection part of a vacuum cleaner has a normal suction air passage and a local suction air passage that opens on both sides, and an internal air passage that communicates with either of these two air passages. A dial-shaped valve body is rotatably installed in the main body, and when the valve body is rotated to suck in dust widely, the suction air path is normally routed through the internal air path of the valve body to collect dust from the vacuum cleaner. In the case of locally suctioning dust from a wall or the like, there is a device in which the local suction air passage is connected to the dust collection part through the internal air passage of the valve body.

However, when the valve body is turned, the direction of the internal air passage formed in the valve body changes, and the connection pipe provided in the main body to connect to the dust collection part of the vacuum cleaner and the internal air passage of the valve body change. The connecting line bends. In addition, the dial-shaped valve body cannot be made large, so the internal air passage has a small cross-sectional area that restricts the airflow. Therefore,
Large trash is difficult to absorb. Further, depending on the rotational position of the valve body, both the normal suction air passage and the local suction air passage may be blocked, which may cause the vacuum cleaner motor to overheat.
Furthermore, the provision of the valve body complicates the structure, and there is a drawback that the suction airflow leaks to the outside from the gap that supports the valve body.

This invention was made in view of these points, and it is possible to increase the suction wind force from the local suction port as necessary to suck in dust without leaving any dirt behind. The object of the present invention is to provide a suction port body for a vacuum cleaner that has a simplified structure and can prevent leakage of suction airflow to the outside.

This invention provides a main body having a rotary pipe connected to a dust collecting section of a vacuum cleaner and a horizontally elongated suction air passage with an opening on the bottom surface communicating with the rotary pipe, and a local suction port opening to the outside and a local suction air passage. If the rotary tube is to be sucked in over a wide area, it will be sucked in from the horizontally elongated suction air path, but by deviating the rotary tube in the axial direction, the rotary tube will be connected to the local suction air path. The pipe is communicated with the opening of the pipe so that dirt can be sucked in from the local suction port as needed, and in this case, the height of the roller protruding from the main body is reduced by the deflection action of the rotating pipe, so that dirt can be sucked in from the local suction port. Priority is given to action, and therefore, suction can be carried out quickly without leaving any dust in the corners of the room, etc., and this operation is performed by deflecting the existing rotary pipe, thereby eliminating the need to provide a separate valve body. This structure is designed to simplify the structure and prevent the suction airflow from leaking to the outside.

An embodiment of the present invention will be described based on the drawings. 1 is the main body. This main body 1 is formed by assembling an upper case 2 and a lower case 3 with a bumper 4 sandwiched between them, and the rear part is connected to the dust collection part of the vacuum cleaner via an extension pipe etc. although not shown. A dogleg-shaped rotary tube 5 is held rotatably in the left-right direction. A horizontally elongated suction air passage 6 and a suction port 7 opening in the center are formed on the lower surface of the main body 1, and furthermore, the support shafts 9 of the rollers 8 are prevented from falling downward by holding pieces 10 on both sides of the front part, and are A horizontally elongated brush 11 is movably supported near the rear edge and is urged upwardly by a spring 12 and inserted so as to be movable up and down.

Thus, local suction ports 13 are formed at both front sides and the front surface of the main body 1. Furthermore, by forming ribs 14 on the upper case 2 and the lower case 3 whose edges are joined to each other, a local suction air passage 15 is formed.
is formed. This local suction air passage 15 communicates with an annular space 16 surrounding the rotating tube 5,
A vent 17 is formed in the rotary tube 5 and is selectively communicated with the local suction air passage 15 through this space 16 . Further, two locking recesses 18 and 19 and an annular protrusion 20 are formed on the outer periphery of the rotary tube 5. A lever 21 that engages with either of the locking recesses 18 and 19 is held in the main body 1 by a pin 22 so as to be rotatable in the left-right direction.

Furthermore, the main body 1 is provided with a protrusion 2 of the rotary tube 5.
0 and the supporting shaft 9 of the roller 8.
An actuating body 25, which is formed with a downward slope 24 and serves as an actuating part for pressing, is housed so as to be slidable in the front and rear directions.

In such a configuration, the rotary tube 5 is connected to the dust collection part of the vacuum cleaner for cleaning. At this time, the rotary tube 5 is deflected forward as shown in FIGS. 3 and 4, and the lever is pressed. 21 is engaged with the locking recess 19, the slope 24 of the actuating body 25 is aligned with the roller 8.
The protrusion height of the roller 8 is increased by pushing the support shaft 9 downward, and the protrusion 20 of the rotary tube 5 presses the brush 11, so that the protrusion height of the brush 11 from the main body 1 is increased.
Therefore, even when cleaning a carpet, the lower surface of the main body 1 does not come into close contact with the carpet, and dirt is efficiently sucked in from a wide range.

Also, by tilting the lever 21 to the side, the locking recess 19
The state in which the rotary tube 5 is removed from the rotary tube 5, the rotary tube 5 is pulled rearward, and the lever 21 is engaged with the locking recess 18 to lock the forward and backward movement of the rotary tube 5 is shown in FIG. In this state, the local suction air passage 15 communicates with the rotary tube 5 via the space 16 and the vent 17, and the brush 11 is connected to the protrusion 20.
The roller 8 is released and retracted upward by the force of the spring 12, and the roller 8 is released by the slope 24 and retracted upward by the pressing force of the floor surface. That is, instead of the suction air passage 6 being in close contact with the floor surface and discontinuing the action of sucking in dust over a wide area, priority is given to the suction action from the local suction port 13, and therefore, the dust can be quickly removed from the wall without leaving it behind. be sucked into.

In this way, the operation of sucking dirt from the local suction port 13 is performed by moving the rotary tube 5 back and forth, and there is no need to provide a separate valve body. Thereby, the suction airflow does not leak from the gap that supports the valve body, and the structure is simple. Furthermore, the vent 17 on the outer periphery of the rotary tube 5 can be formed with a relatively large opening area, and the local suction air passage 15 and space 16 formed in the main body 1 can be formed with even more margin. Therefore, it can absorb even large particles.

Furthermore, in any case, the outside air is sucked in from either the suction air path 6 or the local suction port 13, so that the vacuum cleaner motor will not overheat due to the suction air flow being cut off due to an operational error.

Since this invention is configured as described above, when dust is to be sucked in over a wide area, it is sucked in from the horizontally long suction air path, but by deviating the rotating tube in the axial direction, the local suction air path and the rotating tube are communicated. In this case, by deflecting the rotary tube, the height of the roller protrusion from the main body can be reduced to give priority to the suction action from the local suction port. The suction can be carried out quickly without leaving dust in the corners of the room, and since this operation is performed simply by deflecting the existing rotary pipe, the valve body can be omitted, and the suction airflow is reduced accordingly. This has effects such as preventing leakage to the outside and simplifying the structure.

[Brief explanation of drawings]

The drawings show one embodiment of the invention.
The figure is a perspective view, the second figure is a perspective view from the back, and the third figure is a perspective view.
The figure is a horizontal sectional view, Figures 4 and 5 are central longitudinal side views with the rotary tube in different front and rear positions, Figure 6 is an exploded perspective view of the operating body and the rotary tube, and Figure 7 is the state in which the brush is supported. FIG. 8 is a partially enlarged longitudinal sectional front view showing the relationship between the roller and the actuating body. 1... Main body, 5... Rotating pipe, 6... Suction air path,
8... Roller, 13... Local suction port, 15... Local suction air path, 17... Vent, 24... Slope.

Claims (1)

[Claims] 1. A main body is provided with a rotary tube connected to the dust collection section of the vacuum cleaner and a horizontally elongated suction air passage formed by an opening on the lower surface communicating with the rotary tube, and a local suction port that opens to the outside is provided in the main body. forming a local suction air passage that communicates with the local suction port, and forming a through hole in the rotary tube that selectively communicates with the local suction air passage by a displacement operation of the rotary tube in the axial direction; A roller that rolls on the floor is attached to the lower part of the main body so as to be movable up and down, and an actuating body having an actuating part that engages with the roller is connected to the rotary tube, and the actuating part is connected to the passage of the rotary tube. When the hole communicates with the local suction air passage, the amount of protrusion of the roller is reduced, and when the hole does not communicate with the local suction air passage, the amount of protrusion of the roller is increased. Vacuum cleaner suction body.