JPS642670Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a suction port body for a vacuum cleaner in which a main body case is attached so as to be rotatable with respect to a rotating tube.

BACKGROUND ART Conventionally, there are three types of vacuum cleaner suction ports as described below.

One of them is a large body case whose horizontal dimension is longer than its longitudinal dimension, and a rotary tube is rotatably attached to the main body case.

The other type has a rotary tube rotatably attached to a small main body case with relatively short horizontal dimensions.

The other one is a shelf brush as shown in FIGS. 1 and 2. That is, the rotary tube 2 is rotatably attached to a small main body case 1 with a relatively short horizontal dimension, locking holes 3 are formed in the main body case 1, and locking holes 3 are formed in the main body case 1. An elastic ring 5 having a locking protrusion 4 that comes off from the locking hole 3 when pressed is attached to the rotating tube 2, and the main body case 1 is fixed at a predetermined position with respect to the rotating tube 2.

Problems to be solved by the invention Among these types, the one in which a rotary tube is rotatably attached to the main body case has the advantage of being lightweight and easy to operate when cleaning walls and ceilings.
On the other hand, if you clean the main body case by shaking it from side to side,
Due to the unnatural posture, the pressing force against the wall surface is weak and the contact area with the wall surface is small, so the main body case can easily and carelessly turn a large amount, which hinders cleaning. Not only that, but it also has the disadvantage of damaging the wall surface.

In addition, the shelf brush shown in Figures 1 and 2 is
It has the advantage of being lightweight and easy to operate, and the main case 1 can be continuously fixed in a predetermined position, making it easy to use.However, on the other hand, since the main case 1 is essentially fixed, the main case 1 When cleaning by swinging the main body case 1 from side to side, there is a drawback that the suction port of the main body case 1 moves away from the surface to be cleaned in proportion to the swing angle. Furthermore, in order to make the main body case rotatable, it is necessary to remove the locking protrusion 4 from the locking hole 3.

Means for solving the problem: A main body case is provided which has a relatively short horizontal dimension and a suction port is formed in the center, and the suction port and the dust collection part of the vacuum cleaner are installed at the rear of the main case. A rotary tube made of an elastic member for communication was rotatably attached, a flat surface was formed on the outer periphery of the rotary tube, and a wall for elastically pressing the flat surface was formed on the main body case.

Function When the wall of the main body case and the flat surface of the rotary tube are connected, the main body case does not easily rotate relative to the rotary tube, so it is easy to handle.
In addition, when an external force in the rotational direction of a certain value or more is applied to the main body case, the engagement between the wall and the flat surface is elastic, so the engagement is released and both become free to rotate. The suction port does not separate from the surface to be cleaned when the main body case is moved largely in the left-right direction, and cleaning can be performed efficiently.

Embodiment A first embodiment of this invention will be described based on FIGS. 3 to 6. First, the main body case 10 is provided, the above-mentioned dimensions being longer than the left and right dimensions.
This main case 10 has an upper case 1 whose bottom surface is open.
1 and a lower case 12 whose upper surface is open, are detachably assembled with the openings facing each other, and a bumper 13 is installed between the upper case 11 and the lower case 12.
is being held. And this main case 10
The brush chamber 14 and the turbine chamber 15 are connected to the ventilation port 1.
6 and are formed in communication with each other. A rotary brush 17 is rotatably housed in the brush chamber 14, and a turbine 18 is rotatably housed in the turbine chamber 15 facing the vent 16. A belt 19 is suspended between the rotating brush 17 and the turbine 18. Further, a suction port 20 is formed on the lower surface of the lower case 12 to communicate the brush chamber 14 with the outside of the main case 10, and a frame 21 is attached to surround the suction port 20. A plurality of brush bristles 23 extending downward from the bristles 22 of the rotary brush 17 are planted in the frame 21 in a bundle at a predetermined interval.

Next, a rotary tube 24 made of an elastic member is rotatably attached to the rear part of the main body case 10, and is sandwiched between the upper case 11 and the lower case 12 and has an angular shape. The rear surface of the main body case 10 and the main body case 1 are connected to one end of the rotary tube 24.
A pair of flanges 26 and 27 are formed which come into contact with the rib 25 formed at 0. Two flat surfaces 28 are formed on the outer surface of the rotary tube 24 located between these flanges 26 and 27. These flat surfaces 28 are formed to run parallel to a horizontal plane when the rotary tube 24 is rotated upward (the other end of the rotary tube 24 is at the highest position). Further, a pair of left and right walls 29 are formed in the main body case 10 and communicate with the rear surface and the rib 25. The curved outer surface of the rotary tube 24 excluding the flat surface 28 is in resilient contact with these walls 29 .

In such a configuration, the main body case 10 is formed to have a relatively short dimension in the left-right direction, so that the weight is reduced. As a result, operability is improved when an extension pipe (both not shown) connected to the dust collection part of a vacuum cleaner is fitted to the rotary pipe 24 and an electric blower (not shown) is driven for cleaning. .

When cleaning walls and ceilings by shaking the main case 10 left and right, the main case 10 has a wall 29
A flat surface 28 is formed on the outer periphery of the rotary tube 24 made of an elastic member, and these walls 29 and the outer surface excluding the flat surface 28 are in elastic contact, so that the extension tube is The main body case 10 rotates while being braked with respect to the rotary tube 24 that is fitted and fixed.
This prevents the main body case 10 from accidentally rotating and damaging the wall surface, and also allows the main body case 10 to move along the wall surface. Next, when the wall 29 and the flat surface 28 come into contact with each other due to the rotation of the main body case 10, the main body case 10 is fixed in that state, so that it is maintained in a state that matches the surface to be cleaned, and cleaning can be performed with ease of use. Ru.

Next, in order to release the fixed state of the main body case 10, the rotational force of a predetermined value or more is applied to the main body case 10, so that the fixed state can be easily released.

Furthermore, a second embodiment of this invention will be explained based on FIG. The same reference numerals are used for the same parts as in the first embodiment described above, and description thereof will be omitted (the same applies hereinafter). In this embodiment, a large number of flat surfaces 28 are formed on the outer periphery of the rotating tube 24, one end of the rotating tube 24 is formed into a polygonal shape, and a notch 30 is formed to separate the wall 29 from the rear surface of the main case 10 and the rib 25. It is made to be elastically deformed and is formed independently, and the rotary tube 2
Since 4 is polygonal, the main body case 10 is formed in a state suitable for the surface to be cleaned. Furthermore, since the wall portion 29 is elastically deformed, no unreasonable force is applied to the rotary tube 24 and the like, thereby preventing damage.

Next, a third embodiment of this invention will be explained based on FIG. In this embodiment, a protrusion 31 having a flat surface 28 is formed on the circumferential surface of one end of the rotary tube 24, and one of the walls 29 is formed so as to be in elastic contact with the circumferential surface of the rotary tube 24 at all times. When the other side of the wall 29 is rotated through the rotary tube 24, the flat surface 28
These walls 2
A stopper 32 for preventing rotation of the rotary tube 24 is formed on each of the rotary tubes 9. (The stopper 32 formed on one side of the wall 29 is formed so as to reliably engage the protrusion 30 even if one side of the wall 29 is elastically deformed.) Therefore, rotation of the main body case 10 with respect to the rotary tube 24 is reliably prevented within a predetermined range.

Effects of the invention As mentioned above, this invention has a main body case with a relatively short horizontal dimension and a suction port formed in the center, and the rear part of the main case has the suction port and the vacuum cleaner dust collector. A rotary tube made of an elastic member that communicates with the main body case is rotatably attached, a flat surface is formed on the outer periphery of the rotary tube, and a wall that elastically presses the flat surface is formed on the main body case. When the wall of the main body and the flat surface of the rotating tube are connected, the main body case does not easily rotate with respect to the rotating tube, so it is easy to handle.
When an external force in the rotational direction of a certain value or more is applied to the main body case, the engagement between the wall and the flat surface is elastic, so the engagement is released and both become free to rotate.
This has the effect that the suction port does not separate from the surface to be cleaned when the main body case is moved significantly in the left-right direction, and cleaning can be performed efficiently.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing a conventional example, Fig. 2 is a longitudinal rear view thereof, Fig. 3 is a perspective view showing the first embodiment of this invention, Fig. 4 is an exploded perspective view thereof, and Fig. 5. 6 is a plan view showing the state with the case removed.
Figures a and b are vertical cross-sectional rear views showing changes in the state of engagement between the main body case and the rotary tube, Figure 7 is a vertical cross-sectional rear view showing the second embodiment of this invention, and Figures 8 a, b, and c are FIG. 7 is a vertical cross-sectional rear view showing a third embodiment of the invention. 10... Main body case, 20... Suction port, 24...
...Rotating tube, 28...Flat surface, 29...Wall.

Claims (1)

[Scope of utility model registration request] A rotary tube made of an elastic member is provided with a main body case having a relatively short horizontal dimension and a suction port formed in the center, and communicates the suction port with a dust collecting section of the vacuum cleaner at the rear of the main case. A suction port body for a vacuum cleaner, characterized in that a rotary tube is rotatably attached, a flat surface is formed on the outer periphery of the rotary tube, and a wall that elastically presses the flat surface is formed in the main body case.