JPH0137937B2 - - 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 air flow. 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 provides a suction port body for a vacuum cleaner that can efficiently suck in dust near walls by strengthening local suction airflow from the front as necessary. The purpose is to obtain.

In this invention, a connecting pipe connected to a dust collecting section of a vacuum cleaner is attached so as to be movable in the front and back direction along the axial direction, and a horizontally elongated suction air path is formed by an opening on the lower surface communicating with the connecting pipe. A main body is provided, a local suction port that opens downward across the entire width of the main body, and a local suction air passage communicating with the local suction port are formed in the main body, and a bellows that protrudes from the local suction port and the local suction port are formed. An operating body having an opening/closing part for opening and closing is biased rearward and movable in the front-back direction, and the connection pipe has an annular rib and two locking recesses, and the forward movement of the connection pipe causes the connection pipe to move forward. The fixing device is formed with an axially offset opening that selectively communicates with the local suction air passage, and selectively engages with the locking recess of the connecting pipe to fix the connecting pipe. A connecting part provided in the main body and connected to the actuating body is connected to the rib of the connecting pipe, and forward movement of the connecting pipe connects the port to the local suction passage and moves the bellows forward. The local suction port is opened by the opening/closing portion that protrudes. Therefore, under normal conditions where the connecting pipe port does not communicate with the local suction air path,
Dust can be efficiently sucked from a wide area from the suction air passage, and by simply moving the connecting pipe forward, the opening can be communicated with the local suction air passage, and the bellows can be protruded from the local suction opening via the connecting part. , and the local suction port can be opened by the opening/closing part, thereby allowing dust from near the wall to be efficiently and quickly sucked in from the local suction port. This can be done by moving back and forth along the axial direction, and unlike conventional valves, there is no need for a valve body, which prevents suction airflow from leaking in this area and simplifies the structure. can. Furthermore, the front and back positions of the connecting tube can be securely fixed by means of a fixture that engages with the locking recess of the connecting tube.

An embodiment of the present invention will be described based on the drawings. Reference numeral 1 denotes a main body, and 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 a dogleg-shaped connecting pipe 5 is rotatably provided at the rear. and is held so that it can be moved back and forth. A horizontally elongated suction air passage 6 and a suction port 7 opening at the center thereof are formed on the lower surface of the main body 1.

Thus, a horizontally long local suction port 8 is formed at the front edge of the main body 1 so as to extend from the front surface to the bottom surface of the lower case 3. Further, a local suction air passage 10 is formed in the main body case 1 by forming ribs 9 on the upper case 2 and the lower case 3 whose edges are joined to each other. Furthermore, the connecting pipe 5 is provided with a
A vent 12 is formed which is selectively connected to the local suction air passage 10 via an annular space 11 surrounding the outer periphery of the air passage. Furthermore, two annular locking recesses 13 and 14 and an annular rib 15 are formed on the outer periphery of the connecting pipe 5. A lever 16 as a fixture that engages with either one of the locking recesses 13, 14 is held in the main body 1 by a pin 17 so as to be rotatable in the left and right direction.

Next, an actuating body 20 having a connecting part 18 connected to the rib 15 and an opening/closing part 19 for opening and closing the local suction port 8 is attached to the main body 1 with a spring 21.
It is held so that it can be moved back and forth while being biased rearward. A horizontally long bellows 22 is held in the opening/closing portion 19 of the operating body 20. In addition, the main body 1
A laterally elongated brush 23 is also provided at the rear edge.

In such a configuration, the state shown in FIG. 4 is that the locking recess 13 and the lever 16 are engaged, the connecting pipe 5 is locked in the retracted position, the local suction port 8 is closed by the opening/closing part 19, and the connection is closed. An opening 12 in the tube 5 is isolated from the space 11. When cleaning is performed in this state, dirt is efficiently sucked into a wide area from the horizontally elongated suction air passage 6.

From this state, the lever 16 is tilted sideways to remove it from the locking recess 13, the connecting pipe 5 is advanced forward, and the lever 16 is engaged with the locking recess 14. Thereby, the opening 12 of the connecting pipe 5 communicates with the space 11 and is connected to the local suction air passage 10. In addition, the opening/closing part 19
opens the lower surface of the local suction port 8, and the bellows 22 protrudes forward. Therefore, dust on the walls and the like is quickly sucked in through the local suction port 8 without leaving any residue behind. At this time, if you pull the main body 1 toward you, it is possible to collect and suck in dust from the wall, and conversely, when you slide the main body 1 forward, the bellows 22
Since the lower part of the suction port 8 falls forward due to the resistance with the floor surface, the opening width of the lower surface of the local suction port 8 is narrowed, the suction flow rate increases, and the suction action of dust near the wall is extremely fast.

In this way, the operation of communicating the local suction air passage 10 and the vent 12, the operation of opening the local suction port 8, and the operation of protruding the bellows 22 forward are all performed by simply advancing the existing connecting pipe 5. There is no need to provide a separate valve body to obtain the suction effect from the local suction port 8. Therefore, the suction airflow does not leak to the outside from the gap that supports the valve body. Also,
Since the port 12 is formed on the outer periphery of the connecting pipe 5, it can be formed with a relatively large opening area.
Local suction air passage 10 and space 11 formed in main body 1
It can also be formed with ample space, and therefore large particles can be sucked in even when suctioning locally. Further, since the suction air passage 6 is always open, the vacuum cleaner motor will not overheat due to the suction air flow being cut off due to an operational error.

As described above, the present invention includes a connecting pipe connected to a dust collecting section of a vacuum cleaner, which is attached so as to be movable back and forth along the axial direction, and a horizontally elongated suction air path with an opening on the lower surface communicating with the connecting pipe. A main body is provided, a local suction port opening downward over the entire width of the main body, a local suction air passage communicating with the local suction port, and a bellows projecting from the local suction port. An operating body having an opening/closing part for opening and closing the local suction port is provided so as to be biased rearward and movable in the front-back direction, and the connecting pipe has an annular rib and two locking recesses, and the connecting pipe has an annular rib and a locking recess extending toward the front of the connecting pipe. A vent selectively communicating with the local suction air passage is formed by being deviated in the axial direction by the advancing operation, and selectively engages with the locking recess of the connecting pipe to fix the connecting pipe. A fixing device is provided in the main body, and a connecting part coupled to the actuating body is connected to the rib of the connecting pipe, and forward movement of the connecting pipe connects the opening to the local suction passage, and Since the bellows are made to protrude forward and the opening/closing part opens the local suction port, under normal conditions where the connecting pipe port does not communicate with the local suction air path, a wide range of efficiency can be achieved from the suction air path. Can absorb dust well,
In addition, by simply moving the connecting pipe forward, the opening can be communicated with the local suction air passage, the bellows can be made to protrude from the local suction air passage through the connecting part, and the local suction opening can be opened by the opening/closing part. As a result, dust from walls, etc. can be efficiently and quickly sucked in from the local suction port, and these two different usage modes can be performed by moving the connecting pipe back and forth along the axial direction. Since a valve body is not required as in the conventional case, leakage of the suction airflow at this portion can be prevented and the structure can be simplified. Further, there is an effect that the front and rear positions of the connecting tube can be reliably fixed by the fixture that engages with the locking recess of the connecting tube.

[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 plan view showing the inside of the main body with the upper case removed, Figure 4 is an enlarged central vertical side view, and Figure 5
The figure is a perspective view of a connecting pipe and an operating body. 1... Main body, 5... Connection pipe, 6... Suction air path,
8...Local suction port, 10...Local suction air path, 12
...Port, 13, 14...Latching recess, 15...Rib, 16...Fixing tool, 18...Connection part, 19...
Opening/closing part, 20... operating body, 21... bellows.

Claims (1)

[Claims] 1 A main body is provided in which a connecting pipe connected to the dust collecting section of the vacuum cleaner is attached so as to be movable back and forth along the axial direction, and a horizontally elongated suction air path is formed by an opening on the bottom surface communicating with the connecting pipe. A local suction port opening downward across the entire width of the main body and a local suction air passage communicating with the local suction port are formed in the main body, and a bellow protruding from the local suction port opens and closes the local suction port. An operating body having an opening/closing part is biased rearward and movable in the front-back direction, and the connecting pipe has an annular rib and two locking recesses, and the forward movement of the connecting pipe causes the local suction air to be moved. A fixing device is provided in the main body to selectively engage with the locking recess of the connecting tube to fix the connecting tube, the fixing device being formed with an axially offset opening that selectively communicates with the connecting tube. , a connecting portion coupled to the actuating body is connected to the rib of the connecting pipe, and forward movement of the connecting pipe communicates the port with the local suction passage and causes the bellows to protrude forward. A suction port body for a vacuum cleaner, characterized in that the local suction port is opened by the opening/closing portion.