JPH0128755Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Purpose of invention] (Industrial application field) The present invention relates to a suction port body for a vacuum cleaner.

(Prior Art) The suction port body of a conventional vacuum cleaner of this type has a structure described in, for example, Japanese Utility Model Application Publication No. 56-60445. As shown in Figure 1 of the attached drawings, this structure consists of a suction port body 2 having a suction port 1 on the bottom surface.
and a rotary tube 3 attached to the rear side of the suction port body 2 so as to be vertically movable, and approximately at the vertical center of both sides of the opening of the rotary tube 3 that opens into the suction port body 1. A support shaft 4 is provided at the position, and both support shafts 4
is rotatably supported at a rear position of the suction port main body 2 at a position approximately midway between the vertical height of the suction port main body 2.

Further, as shown in FIG. 2, support shafts 4 are provided at lower positions in the vertical direction on both sides of the opening in the suction port main body 1 of the rotary tube 3, and both support shafts 4 are connected to the suction port. A structure in which the suction port is rotatably supported at a lower position in the vertical direction of the suction port main body 2 at a rear position of the main body 2 is also known.

(Problems to be solved by the invention) In the suction port body shown in FIG.
When operating force is applied to the suction port body 2 via
The front side of the suction port body 2 is lifted and floats up.
In particular, in a structure in which the support shaft 4 of the rotary tube 3 is formed at a lower position of the rotary tube 3 as shown in FIG. 2, the suction airflow sucked from the suction port 1 is sucked into the vacuum cleaner body from the rotating tube 3 through the suction port body 2, and the negative pressure generated within the suction port body 2 causes the front side of the suction port body 2 to move upward around the support shaft 4 of the rotary tube 3. Rotate and float,
There is a problem in that the suction port 1 is separated from the surface to be cleaned, making efficient cleaning impossible. Therefore, as shown in FIG.
Although a suction port body having a structure has been proposed, such a structure has the problem that the rear side of the suction port main body 2 rises above the surface to be cleaned, and the cleaning efficiency is similarly low.

The present invention was devised in view of the above-mentioned problems, and provides a suction port body for a vacuum cleaner that allows efficient cleaning by closely contacting the surface to be cleaned without the suction port body floating above the surface to be cleaned. It is.

[Structure of the idea]

(Means for Solving the Problem) The suction port body of the vacuum cleaner of the present invention includes a suction port body having a suction port on the lower surface, and a suction port body attached to the rear side of the suction port body so as to be freely rotatable in the vertical direction. The suction port is provided with a rotary tube, and spindles provided at upper sides of both sides of an opening opening into the suction port body of the rotary tube are rotatably supported at a rear upper position within the suction port body. It is something.

(Function) In the suction port body of the vacuum cleaner of the present invention, the suction air drawn into the suction port body from the suction port opened on the lower surface of the suction port body is based on the opening of the rotating pipe.
A suction force due to negative pressure is generated across the opening surface of the rotating tube, and the suction port body is drawn to the opening surface of the opening section by the negative pressure. The side that is pulled toward the opening surface of the rotating tube as the center, that is, the side that is rotated downward with respect to the rotating tube, so that the front side of the suction port body does not rise above the surface to be cleaned, and the operation is applied through the rotating tube. Since the force is applied to the middle position in the longitudinal direction of the suction port body, lifting of the front side of the suction port body due to operating force is also prevented, and the suction port opened at the bottom of the suction port body is in close contact with the surface to be cleaned, resulting in efficient cleaning. I can do it.

(Embodiment) The configuration of an embodiment of the present invention will be described based on FIGS. 4 and 5.

The suction port body has a suction port body 12 formed in a substantially rectangular parallelepiped shape and having a widthwise longitudinal suction port 11 opened on the bottom surface.
and a rotary tube 13 provided at the center of the rear wall of the suction port body 12 so as to be movable up and down. Inside the suction port body 12 is a fan 14 that is rotated by the suction air flowing from the suction port 11 through the inside of the suction port body 12 and into the rotary tube 13, and a fan 14 facing the suction port 11. 1
The rotating brush 15 is rotatably driven by the rotation of 4.

The suction port main body 12 is composed of an upper case 21 and a lower case 22, and the inside of the suction port main body 12 is divided into front and rear parts by partition walls 23 formed along the longitudinal direction, which is the width direction. A rotating brush chamber 24 in which the rotating brush 15 is rotatably disposed is formed on the front side of this partition wall 23, and the rear side of this partition wall 23 has partition plate portions 25, 2 in the front and rear direction.
6, a fan chamber 27 is formed in the center in which the fan 14 is rotatably arranged, one side of this fan chamber 27 is formed as the shaft support chamber 28 of the fan 14, and the other side is It is formed in the switching lever chamber 29. The suction port 11 is opened at a position below the rotating brush chamber 24, and the rotating brush chamber 24 and the fan chamber 27 are communicated through a communication port 30 formed in the center of the partition wall 23. Further, the sections of the upper case 21 and lower case 22 forming the fan chamber 27 are formed in an arc shape that bulges outward. A notch hole 31 is formed in the center of the side wall.

Further, the rotary tube 13 has a tube body 41 and a tube body 4.
This tube body 41 consists of a semi-cylindrical portion 42 provided at the base end of the tube body 41 in a direction perpendicular to the tube body 41.
A connecting tube 43 is connected to the other end of the tube body 41 so as to be rotatable in the circumferential direction. Further, support shafts 44 that serve as rotational fulcrums of the rotary tube 13 are protruded from the upper portions of both sides of the semi-cylindrical portion 42 of the rotary tube 13, and each support shaft 44 is connected to the upper case 21 and the lower case 2.
The spindle 44 of the rotary tube 13 is rotatably held between the partition plates 25 and 26 of the fan chamber 27, and is rotatably supported at the rear upper position of the fan chamber 27, and the tube body 41 and the connecting tube 43 are connected to the notch. 31 to suction port body 1
2 It sticks out. Further, the semi-cylindrical portion 42 of the rotary tube 13 has an opening 45 that is approximately rectangular when viewed from the front.
is formed.

Further, the fan 14 is provided with a plurality of blades 52 radially inclined in one direction around the shaft support cylinder portion 51, and circular flanges 53 are provided on both sides of the blades 52. is arranged in the fan chamber 27 so as to be surrounded by the semi-cylindrical portion 42 of the rotary tube 13. Furthermore, a rotating shaft 54 is provided within the shaft support cylinder portion 51 of the fan 14.
is inserted and fixed, and this rotating shaft 54 is inserted into the shaft supporting chamber 2.
8, and this rotating shaft 5
4, this fan 14 is rotatably supported.

Further, the rotating brush 15 is formed by planting brush bristles 62 in a spiral around a rotating shaft portion 61. The rotary brush 15 is configured such that both ends of the rotary shaft portion 61 are rotatably supported on both sides within the rotary brush chamber 24.
4 and is rotatably supported facing the suction port 11. Further, an endless drive belt 64 is wound around the gear 63 attached to one end of the rotating shaft 61 and the gear 63 of the rotating shaft 61, so that the rotation of the fan 14 is transmitted to the rotating shaft 61. The rotating brush 15 is adapted to be rotated.

Further, the suction port main body 12 includes the partition wall 23.
An adjusting plate 71 for adjusting the opening area of the communication port 30 to be large or small is slidably provided along the switching lever chamber 29, and this adjusting plate 71 is connected to a switching lever 72 slidably provided in the switching lever chamber 29. It is designed to slide.

Next, the operation of this embodiment will be explained.

An extension pipe connected to a vacuum cleaner (not shown) to the connecting pipe 43 connected to the rotating pipe 13 of the suction port body;
It is connected to a hose and the suction port is slid over the surface to be cleaned. Then, the suction air from the suction port 11 of the suction port main body 12 sucks in dust, etc., and the suction air passes through the rotating brush chamber 24, the communication port 30, the fan chamber 27, and the rotating pipe 13 in the suction port main body 12, and is extended. It is sucked into the vacuum cleaner through pipes and hoses. At this time, the adjustment plate 7 is
1 to narrow the opening area of the communication port 30, the speed of the suction air guided from the communication port 30 into the fan chamber 27 increases, causing the fan 14 to rotate,
Rotating shaft 54, gear 55, drive belt 64, gear 6
3, the rotation is transmitted to the rotating shaft portion 61 of the rotating brush 15, and the rotating brush 15 rotates to scrape up dust and the like on the surface to be cleaned.

In addition, the suction air passing through the suction port main body 12 is
Based on the opening 45 of the semi-cylindrical portion 42 of the rotary tube 13 in the suction port main body 12, the opening 4
A suction force due to negative pressure is generated across the opening surface of the opening 45, and the suction port body 12 is drawn to the opening surface of the opening 45 due to the negative pressure.
Since a support shaft 44 serving as a rotational fulcrum is provided on both upper sides of the semi-cylindrical portion 42, that is, on both sides of the upper part of the opening 45, the suction port body 12 rotates around the support shaft 44 as a fulcrum of the opening of the opening 45. In other words, it rotates downward with respect to the rotating tube 13. Therefore, the front side of the suction port body 12 does not rise above the surface to be cleaned, the suction port 11 comes into close contact with the surface to be cleaned, and the bristles 62 of the rotating brush 15 that slightly protrude from the suction port 11 are always on the surface to be cleaned. Contact.

Next, another embodiment will be described based on FIGS. 6 and 7. Note that the same parts as in the above embodiment are given the same reference numerals, and the explanation thereof will be omitted.

The suction port body of this embodiment has the structure of the previous embodiment, and further includes a spring 81 formed of a coil spring that biases the rotary tube 13 upwardly with respect to the suction port body 12, and a spring 81 attached to the spring 81. It has an adjustment device 82 for adjusting the force. One end of this spring 81 is hooked on an engaging protrusion 83 protruding from the rear portion of one side of the semi-cylindrical portion 42 of the rotary tube 13 which is rearward of the support shaft 44, and The other end engages the adjustment device 82 .

The adjustment device 82 also includes an adjustment screw 84 that is screwed into a screw hole formed in the rear edge of the upper surface of the upper case 21 of the suction port body 12 rearward than the support shaft 44 so as to be freely retractable. It has a hook-shaped hook 86 which is secured to the tip of the screw 84 by a screw 85 and which hooks the other end of the spring 81.
The other configurations are the same as those in FIGS. 4 and 5.

The biasing force of the spring 81 is applied to the support shaft 44.
The rear part and the upper case 2 of the suction port main body 12
1, the rotary tube 13 is urged to rotate upward relative to the suction port body 12. This means that the suction port main body 12 is urged to rotate upward relative to the rotating tube 13, and the suction port main body 12, which attempts to rotate downward relative to the rotating tube 13 due to the suction air, is suppressed. Also, the adjustment screw 8 of the adjustment device 82
4 is rotated to advance or retreat, and the biasing force of the spring 81 is changed, the degree of closeness of the front side of the suction port body 12 to the surface to be cleaned is adjusted according to the type of surface to be cleaned. For example, in a carpet, the spring 8
The urging force of the spring 81 is weakened to increase the degree of adhesion, and the urging force of the spring 81 is increased to reduce the degree of adhesion on the floorboard surface and the like. By adjusting the biasing force of the spring 81 in this way, it is possible to obtain the adhesion force depending on the type of surface to be cleaned, and efficient cleaning can be achieved.

[Effect of idea]

According to the present invention, the spindles provided at the top of both sides of the opening opening into the suction port body of the rotary tube are rotatably supported at the upper rear position within the suction port body, so that the rotary tube When the suction wind blows through,
Negative pressure is generated to draw the suction port body toward the opening of the rotating tube, and the suction port body is rotated downward with respect to the rotating tube and comes into close contact with the surface to be cleaned. Therefore, the suction port body does not float above the surface to be cleaned, and cleaning can be performed efficiently, and there is no need to press the suction port body to bring it into close contact with the surface to be cleaned, so cleaning can be performed easily.

[Brief explanation of the drawing]

FIG. 1 is a vertical side view showing a conventional suction port body, FIG. 2 is a vertical side view showing another conventional suction port body, FIG. 3 is a vertical side view showing another conventional suction port body, FIG. 4 is an exploded perspective view of a suction port body showing one embodiment of the present invention, FIG. 5 is a longitudinal cross-sectional side view of the same as above, and FIG. 7
The figure is a partially cutaway perspective view of the same as above. 11... Suction port, 12... Suction port body, 13...
... Rotating tube, 44 ... Support shaft, 45 ... Opening, 81
... Spring, 82 ... Adjustment device.

Claims (1)

[Claims for Utility Model Registration] (1) A suction port body having a suction port on the lower surface, and a rotary tube attached to the rear side of the suction port body so as to be rotatable in the vertical direction; 1. A suction mouth body for a vacuum cleaner, characterized in that support shafts provided at upper sides of both sides of an opening opening into the suction mouth body are rotatably supported at positions above the rear part of the suction mouth body. (2) The scope of the utility model registration claim, characterized in that the rotary tube is provided with a spring that rotates and biases the suction port body upward, and the biasing force of the spring is adjustable by an adjustment device. The suction port body of the vacuum cleaner according to item 1.