JPH0137938B2 - - 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 in a wide area, the suction air path is normally routed through the inner passage of the valve body to the dust collection part of the vacuum cleaner. In some cases, the local suction air passage is connected to the dust collecting part through the inner air passage of the valve body when dust is locally sucked in from a wall or the like.

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 if necessary, the brush can be protruded from the local suction port to sweep up dust and suck it from the local suction port, and this operation can be done by moving the existing connecting pipe forward. Therefore, 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 in which a connecting pipe connected to a dust collection 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 passage is formed in the bottom opening communicating with the connecting pipe. A local suction port opening at the lower front of the main body and a local suction air passage communicating with the local suction port are formed in the main body, and a brush protruding forward from the local suction port is urged rearward to move the brush in the front-rear direction. The connecting pipe is provided with an annular rib, two locking recesses, and a passage that selectively communicates with the local suction air passage by forward movement of the connecting pipe, and is offset in the axial direction. let it form,
A fixture is provided on the main body to selectively engage with the locking recess of the connecting tube to fix the connecting tube, and a connecting portion coupled to the brush is connected to the rib of the connecting tube. be. Therefore, under normal conditions where the port of the connecting pipe does not communicate with the local suction air path, dirt can be efficiently sucked from a wide area from the suction air path, and the air can be removed simply by moving the connecting pipe forward. In addition to communicating the mouth with the local suction air path, the brush can be made to protrude from the local suction port via the connecting part, thereby quickly sucking dust from the local suction port by sweeping away dust from the wall etc. with the brush. These two different usage modes can be achieved by moving the connecting pipe back and forth along the axial direction, and there is no need to use a valve body as in the past, so the suction at this part is Airflow leaks can be prevented and the structure can be simplified. 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 plurality of local suction ports 8 are 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, a port 12 is formed in the connecting pipe 5 to be selectively connected to the local suction air passage 10 via an annular space 11 surrounding the outer periphery of the connecting pipe 5. Furthermore, locking recesses 13 and 14 and an annular rib 15 are formed on the outer periphery of the connecting pipe 5. The main body 1 includes a lever 16 as a fixture that engages with either one of the locking recesses 13 and 14.
is held by a pin 17 so as to be rotatable in the left and right direction.

Next, a brush 19 facing the local suction port 8 is held in the main body 1 via a connecting portion 18 to which the rib 15 is connected, so as to be able to move back and forth while being biased rearward by a spring 21. The bristles 20 of this brush 19 protrude diagonally downward toward the local suction port 8. A laterally elongated brush 22 is also provided at the rear edge of the main body 1.

In such a configuration, in the state shown in FIG. 4, the locking recess 13 and the lever 16 are engaged to lock the connecting pipe 5, and the opening 12 of the connecting pipe 5 is closed to the space 1.
It is isolated from 1. 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. Also, brush 19
The hair transplanting portion 20 also moves forward, and the flocked portion 20 protrudes forward from the local suction port 8. 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, it is possible to move the main body 1 back and forth to sweep up and suck in dust near the wall, and therefore, the action of sucking in dust near the wall is extremely fast.
Conventional brushes are extremely inconvenient because they cannot sweep away dirt stuck to the corner where the wall and floor meet.

In this way, the operation of communicating the local suction air passage 10 and the vent 12 and the operation of protruding the flocked part 20 of the brush 19 forward are all done by simply advancing the existing connecting pipe 5, and from the local suction port 8 There is no need to provide a separate valve body to obtain the suction action. Therefore, the suction airflow does not leak to the outside from the gap that supports the valve body. In addition, since the vent 12 is formed on the outer periphery of the connecting pipe 5, it can be formed with a relatively large opening area, and the local suction air passage 10 and space 11 formed in the main body 1 can also be provided with sufficient space. Therefore, large particles can be sucked in even during local suction.
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 at the lower front side and a local suction air passage communicating with the local suction port are formed in the main body, and a brush protruding forward from the local suction port is attached to the rear. The connecting pipe is provided with an annular rib, two locking recesses, and a passage that selectively communicates with the local suction air passage by forward movement of the connecting pipe. A fixing device is provided on the main body and is formed to be offset in the axial direction and selectively engages with the locking recess of the connecting tube to fix the connecting tube, and the rib of the connecting tube is attached to the brush. Since the connected joints are connected, under normal conditions where the connecting pipe port does not communicate with the local suction air path, it is possible to efficiently suck dust from a wide area from the suction air path. By simply moving it forward, the opening can be communicated with the local suction air passage, and the brush can be made to protrude from the local suction air passage via the connecting part. Suction can be drawn quickly from the suction port, and these two different usage modes can be performed by moving the connecting pipe back and forth along the axial direction, and there is no need to use a valve body as in the past. , leakage of the suction airflow at this part 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 a brush. 1... Main body, 5... Connection pipe, 6... Suction air path,
8...Local suction port, 10...Local suction air path, 12
...Port, 13, 14...Engagement recess, 15...Rib, 16...Fixing tool, 18...Connection part, 19...
brush.

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 at the lower front of the main body and a local suction air passage communicating with the local suction port are formed in the main body, and a brush protruding forward from the local suction port is urged rearward to move in the front-rear direction. The connecting pipe is provided with a rib, a locking recess with two threads, and a passage that selectively communicates with the local suction air passage by forward movement of the connecting pipe, which are offset in the axial direction. , the main body is provided with a fixture that selectively engages with the locking recess of the connecting tube to fix the connecting tube, and a connecting portion coupled to the brush is connected to the rib of the connecting tube. A vacuum cleaner suction port body featuring: