JPH01223918A - Suction port body for vacuum cleaner - Google Patents

Abstract

PURPOSE:To reduce the generation of a turbulence in a suction port and to prevent the generation of a noise resulting from the turbulence by disposing the communicating port of an air path for communicating with the communicating port substantially at the center part of the long side of the suction port, and forming a protruding piece opposite to the center of the connecting port and protruding to the suction port at an opposite side to the communicating port. CONSTITUTION:A notch port 5 is cut and formed substantially at the center of the connecting port 2 side of a rib 3 formed on a suction port part 4. Further, a protruding piece 6 protruding to the suction port part 4 to the connecting port 2 from a position opposite to the center of the connecting port 2 of the rib 3 opposite to this notch 5 is formed. When the connecting port part 2 of a sub suction port main body 1 is connected to the suction side of the electric blower of a vacuum cleaner through an extension pipe, a hose or the like to make the suction port main body 1 abut against a mattress or the like and suck air, the air is sucked horizontally and from a lower part to the elongated suction port part 4, the sucked air is guided by the protruding piece 6 at the center of the suction port part 4, the direction thereof is converted to the connecting port part 2 without a mutual collision to generate no turbulence, accordingly, nor generate noise.

Description

[Detailed description of the invention] (Object of the invention) (Industrial application field) The present invention is connected to a vacuum cleaner through a hose, an extension pipe, etc. This invention relates to a suction port body for an electric B1 remover suitable for cleaning such as.

(Prior art) Conventionally, a suction spout body used mainly for cleaning futons, etc. of a vacuum cleaner has an opening on the lower surface inside the suction spout body, which has a connecting mouth portion on the rear wall that communicates with the vacuum cleaner body. A rectangular suction port is formed, and a substantially central portion in the length direction of the suction port is communicated with the connecting port through an air passage to prevent dust, etc. from being sucked in from the left and right sides of the suction port that is elongated in the width direction. structure was adopted.

(Problems to be Solved by the Invention) When using a suction port body having the conventional structure as described above, winds sucked in from the left and right sides of the horizontally long suction port collide at the center and are sucked into the connecting port. Therefore, there was a problem in that turbulence was likely to occur in the central part, resulting in increased noise.

In particular, the suction port dedicated to the futon is relatively small, and the air path is small compared to the area of the hose and extension tube of the vacuum cleaner itself, so turbulence is likely to occur.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to reduce the occurrence of turbulence at the suction port and to provide a suction port body that does not generate H noise caused by the turbulence.

(Structure of the Invention) (Means for Solving the Problems) The suction port body of the vacuum cleaner of the present invention has a connecting port portion that communicates with the vacuum cleaner main body at an approximately center portion of the rear wall on the lower surface of the suction port body. a substantially rectangular suction extending in the width direction formed by ribs [one part is open, and a communication port for an air passage communicating with the connecting port is provided approximately in the center of the long side of the suction port; moreover,
A projecting piece is formed on a side of the suction port opposite to the communication port to face the center of the connection port and protrude into the suction port.

(For f+) The suction port body of the vacuum cleaner of the present invention has a rectangular suction body [where air sucked in from the left and right sides of one part is guided by the central protrusion and the flow path is converted toward the respective connecting ports. Because of this, they do not collide with each other, and wind collisions do not generate turbulence, preventing the occurrence of g-prize.

(Example) An embodiment of the present invention will be described with reference to the accompanying drawings.

Reference numeral 1 denotes a suction port main body with an open bottom surface, and a connection port 2 is formed on the rear wall of the suction port main body, which communicates with the vacuum cleaner main body via an extension pipe or a hose. Furthermore, an elongated rectangular rib 3 protrudes downward from the earthen wall of the main body 1 and extends in the width direction, and an elongated suction port 4 surrounded by the rib 3 is opened on the lower surface. A notch [15] is formed in the substantially central portion of the rib 3 on the connection port 2 side that forms the suction port 4.

Further, a projecting piece 6 is formed on the rib 3 on the opposite side of the notch 5 so as to protrude toward the suction port 4 from a position facing the center of the connection port 2 .

In addition, left and right guides 19, 9 curved inwardly in an arc shape are extended from halfway up the height of the facing edges 7.7 of the notch 5 toward the connecting port 2. Rib 9,9
The tip of the guide rib 9.9 communicates with the inner end surface of the connecting port 2, and the inner wall of the guide rib 9.9 is formed to be the same as the inner wall of the connecting port 2, so that the guide rib 9.9 is connected to the suction port 4 and the connecting port. Part 2
The upper part of the air passage 10 is formed to communicate with the air passage 10. Furthermore, female threaded cylinders 11 and 11 are provided on both sides of the upper part of the air passage 10 to protrude from the suction port body 1.

Reference numeral 12 denotes a lid, and a lower surface portion 1 covers the lower surface of the air passage 10.
3, and both side surfaces 14.14 which are bent upward on both sides of this lower surface portion 13 and overlapped with the lower surface of the guide rib 9.9.
and an end face plate part 16 which is formed integrally with the lower face part 13 and both side face parts 14, 140 and the lower end part, and which closes the notch opening 5, leaving a horizontally elongated air passage communication opening 15 at the upper part. . The lower surface portion 13 and both side surface portions 14 of this lid body 12.
A portion of the cover consisting of 14 is gradually narrowed toward the connection port 2 so that its cross section becomes approximately semicircular, and the inner peripheral surface of the tip portion is formed to match the inner diameter of the connection port 2. . Furthermore, from the middle of both side surfaces 14.14 of this lid body 12, a through hole 1 overlapped with the female screw cylinder 11.11 is formed outwardly.
A protruding piece 18.18 having a diameter of 7.17 is protruded, and a screw 19.19 is inserted into the internally threaded cylinder 11.1 through this through hole 17.17.
To 1! lI@t, the lid body 12 is fixed to the suction port body 1.

In addition, as shown in FIG. A step L is formed to generate sounds of different frequencies in the suction air.

Next, the operation of the above embodiment will be explained.

When the connecting port 2 of the suction port main body 1 is connected to the electric feeder of the vacuum cleaner main body and the suction side of the vacuum cleaner via an extension pipe, a bow, etc., and the suction port 4AI is brought into contact with the futon holder to draw air, As shown in FIG. 4, wind is sucked into the elongated suction port 4 from below and from the left and right, and the wind sucked in from the left and right is guided by the protrusion 6 at the center of the suction port 4 without colliding with each other. 2, the direction is changed towards the 2nd direction, and there is no turbulence and therefore no noise.

In addition, as shown in FIG. 5, air sucked in from the suction port 4 elongated from side to side is connected by an air path 10 formed by a guide rib 9.9 and a lid 12 as shown in FIGS. 7 and 8. Since the Igi area is gradually deformed to the cross-sectional shape of the connecting mouth part 20 as it is guided toward the mouth part 2, it is less likely to generate noise that would otherwise create a turbulent flow.

In the above embodiment, the rib 3 forming the suction port 4 is
Although a step L (!-) is provided between approximately the middle of the long side of the front side and the end edge of the end plate portion 16 of the lid body 12, it is not necessary to provide the step as shown in FIG.

However, if there is no step, the front and rear directions a and b of the rib 3
The wind that is sucked in from the vertical direction C and the wind that is sucked in from the vertical direction C in the central part have particularly high wind speeds from the front and back directions a and b, which is clear from the frequency characteristics shown in Figure 10. Since the frequencies a and b of wind noise are between roads, the noise due to wind noise is approximately doubled to 70 to 71 horns, which is a relatively high noise level.

In addition, as shown in FIG. 5, a lid body 1 is provided at the center of the front path on the long side of the rib 3 forming the suction port 4 and at the approximately center of the rear side.
In the case of v4n in which the step 1 is provided between the end edge of the end plate portion 16 of No. 2, the frequency of the suction air sucked in from the opposing long sides is different, and the sound level is lowered.

In other words, when the step L is provided as shown in Fig. 5, the flow of air sucked in from the inclined direction from the front and rear directions a and b of the rib 3 and the flow of air sucked in from the vertical direction of the central portion C are different. Since the wind speeds of the wind sucked in from the front and rear directions a and b of the rib 3 are different, the frequencies of the wind noise are different, and the 11th
As is clear from the frequency characteristics of wind noise a and b (not shown), the overall noise level can be suppressed to a low level. It becomes a horn.

In Figures 10 and 11, a is the waveform of wind noise generated by the front rib, b is the waveform of wind noise generated by the rear rib, and a is the waveform of the overall wind noise. It shows.

[Effects of the Invention] According to the present invention, the wind sucked in from the left and right sides of the WA long suction port is guided to the suction side by the central protrusion, respectively.
Turbulence caused by wind collisions is prevented, and noise caused by suction wind can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a bottom perspective view of the suction port body of the vacuum cleaner of the present invention;
Fig. 2 is a bottom perspective view with the upper lid removed, Fig. 3 is a perspective view of the upper lid, Fig. 4 is a perspective view of the - section of the suction opening showing the flow state of the suction air, and Fig. 5 is a perspective view of the bottom with the upper lid removed. The figure is a vertical sectional side view of the stepped portion of the suction port, Figures 6, 7, and 8 are cross-sectional views of the air passage from the suction port to the connection port at different positions, respectively, and Figure 9 is the other side view. FIG. 10 is a longitudinal cross-sectional side view of the suction port according to the embodiment of
FIG. 11 is a frequency characteristic diagram of wind noise. 1... Suction port body, 2... Connection [1 part, 3... Rib, 4
... Suction port, 6. Projection piece, 10. Air path, 15. Communication port. 5 points

Claims (1)

[Claims] (1) A substantially rectangular suction port formed by ribs on the lower surface and extending in the width direction is opened, and a connecting port that communicates with the vacuum cleaner body is provided approximately at the center of the rear wall, and the length of the suction port is A suction port body is provided with a communication port for an air passage that communicates with the connection port portion formed approximately at the center of the side side, and a portion of the suction port body is provided within the suction port portion opposite to the center of the connection port portion on the side opposite to the communication port. A suction port body for a vacuum cleaner, characterized in that a protrusion protruding from the top is formed.