JPH0517012Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to the suction port of a vacuum cleaner, and particularly to the structure of an agitator for scraping dust from surfaces to be cleaned such as carpets.

(Prior Art) Conventionally, the suction port body of this type of vacuum cleaner has been disclosed, for example, in Publication of Utility Model Publication No. 16522-1970, Publication of Publication No. 12388-1988, Publication No. 28220-44-2000, and Publication of Publication Utility Model Publication No. 48-2820.
As described in Publication No. 5245, a vibrating body that is vibrated by the suction airflow is placed facing the suction port of the suction port body, and the vibration of this vibrating body efficiently knocks out dust from a carpet, etc. A structure that allows this is known.

(Problem to be solved by the invention) In the suction port body of the vacuum cleaner with the conventional structure described above, the vibrating body is placed facing the suction port, so lint and hair sucked into the suction port etc. may wrap around the vibrating body, making the vibration movement of the vibrating body uncertain.
There was a problem in that stable performance could not be obtained easily, and it was not easy to remove lint, hair, etc. attached to the vibrating body, making it difficult to clean the suction port body.

The present invention is an attempt to solve these problems. It prevents lint, hair, etc. from getting wrapped around the vibrating body, allows dust to be efficiently knocked out from carpets, etc., and has a structure that is To provide a suction port body for a vacuum cleaner that is simple and has stable performance.

(Means for Solving the Problems) The suction port body of the vacuum cleaner of the present invention is provided with a suction port body that has a suction port opened on the lower surface and an air passage communicating with the suction port provided inside, and The suction port and the air path are separated from each other by a partition wall provided on the rear side of the suction port in the mouth body, and a flexible membrane stretched from the upper surface of the partition wall facing the air path. An isolation chamber is formed which is open to the membrane, and a large number of vibrating bodies are provided in this isolation chamber, adjacent to the lower side of the membrane body, and connected to each other in parallel in the horizontal direction by spring bodies.

(Function) During cleaning, the suction port body of the vacuum cleaner of the present invention faces the air path due to the pressure difference, that is, the fluctuation of the degree of vacuum, caused by the airflow flowing from the suction port and passing through the air path inside the suction port body. The membrane vibrates. Due to this vibration of the membrane, the membrane hits a number of vibrating bodies connected by spring bodies, and the vibration of the membrane is irregularly transmitted to these vibrating bodies, causing each vibrating body to vibrate irregularly in the vertical direction, etc. It hits the surface to be cleaned, such as a tea towel, and knocks out dust from the surface to be cleaned, and the dust that is knocked out is sucked in through the suction port. Since the vibrating body is supported in an isolation chamber isolated from the suction port and the air path, it is not sucked in by the suction airflow.
Threads, hair, etc. do not get wrapped around and adhere to the vibrating body.

(Example) Next, the structure of an example of the suction port body of a vacuum cleaner of the present invention will be described based on FIGS. 1 to 3.

11 is a suction port main body, and a joint pipe 12 is connected to the rear of this suction port main body 11. Note that this joint pipe 12 may be bent and rotatable relative to the suction port main body 11. Also,
A suction port 13 is formed in the outer periphery of the lower surface of the suction port main body 11 from its front edge to both side edges to easily change the suction airflow. It communicates with the joint pipe 12 via an air passage 14 formed inside the main body 11 on the upper side.

Further, in the suction port main body 11, an isolation chamber 16 is located below the air passage 14, and is partitioned into the rear side and both sides of the suction port 13 by a partition wall 15 having a substantially U-shaped plane, and has an open bottom surface. are divided into sections. A plurality of shape-retaining members 17 made of plate springs or the like and extending in the left-right direction are installed between both sides of the upper part of the isolation chamber 16.

Further, a flexible and elastic membrane 18 made of rubber or the like is stretched between the upper surface of the partition wall 15 and the shape retaining member 17, facing the air passage 14. is the air passage 14 and the isolation room 16
The area is airtightly divided.

Further, in the isolation chamber 16, the membrane body 18
A vibrating body 19 consisting of a large number of hollow, lightweight spherical bodies positioned closer to the lower side is supported in parallel in the horizontal direction. These vibrating bodies 19 are mutually connected to the circumferential surface of the isolation chamber 16 via a coil-shaped spring body 20, and are supported by the spring body 20 so as to be able to vibrate in the vertical direction within the isolation chamber 16. ing. Note that the lower end of the vibrating body 19 is located at approximately the same height as the lower surface of the suction port body 11.

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

When cleaning, for example, connect a hose to the main body of the vacuum cleaner, connect an extension pipe to this hose, connect the joint pipe 12 to this extension pipe, grasp the grip part of the hose, etc., and remove the suction port main body 11. is slid in the front and rear directions on the surface to be cleaned, such as the floor or the carpet 21.

When the electric blower inside the vacuum cleaner body is not driven, that is, when no suction airflow is generated, the membrane 18 is in a two-dimensionally tensioned state, and the vibrating body It's barely even close to 19. When the electric blower is driven, a suction airflow is generated that flows in from the suction port 13 and reaches the dust collection chamber of the vacuum cleaner body via the air passage 14, the joint pipe 12, the extension pipe, and the hose, as shown in Fig. 2. As such, the membrane body 18 vibrates due to the pressure difference caused by the airflow passing through the air passage 14, that is, due to fluctuations in the degree of vacuum. Such pressure fluctuations occur even when the suction port main body 11 is stationary, but when the suction port main body 11 is running, it occurs more greatly due to changes in the condition such as unevenness of the surface to be cleaned. .

Note that the membrane body 18 is a shape-retaining member 17 as a core body.
Therefore, it will not be adsorbed to the upper surface inside the air passage 14 due to the negative pressure inside the air passage 14.

Then, the membrane body 18 hits the vibrating body 19, and the vibration of the membrane body 18 is irregularly transmitted to these vibrating bodies 19, and the vibrating body 19 connected by the spring body 20 irregularly moves in the vertical direction etc. It vibrates and hits the carpet 21, etc., and dust is knocked out from the carpet 21. The dust thus knocked out is sucked in through the suction port 13 and guided to the dust collection chamber of the vacuum cleaner body by the aforementioned suction airflow.

In this way, according to the configuration of the above embodiment, cleaning can be performed regardless of whether the suction port main body 11 is stationary or moving, and regardless of the angle at which the suction port main body 11 is moved. The vibrating body 19 can always and efficiently knock out dust from surfaces to be cleaned, such as carpets.

Further, the vibrating body 19 is arranged in an isolation chamber 16 separated from the suction port 13 and the air passage 14 by the partition wall 15 and the membrane body 18, and the vibrating body 19 is not located in the flow passage of the suction airflow. , since thread waste, hair, etc. do not wrap around and adhere to the vibrating body 19, the vibrating body 1
The vibration operation of No. 9 does not become uncertain.

Moreover, compared to a suction port body in which a rotary brush is rotated by a turbine or an electric motor, the structure is much simpler, there is no variation in performance, there are fewer failures, and the cost can be reduced. In particular, since the vibrating body 19 is actuated only by the suction airflow, the cost can be significantly lower than that provided with an electric motor. The structure of another embodiment of the present invention will be explained with reference to FIG.

In this embodiment, the diameter of the vibrating body 19 is made non-uniform. That is, vibrating bodies 19 made of spherical bodies having different diameters are appropriately arranged and arranged in parallel. By changing the size of the vibrating bodies 19 as in the structure of this embodiment, the vibrating bodies 19 can be made to operate in different ways, and these vibrating bodies 19 can strike the surface to be cleaned and have the effect of knocking out dust. be enhanced.

Furthermore, the configuration of another embodiment of the present invention will be explained with reference to FIG.

In this embodiment, the air passage 14 inside the suction port body 11 is
The configuration includes an air passage adjustment device 26 that adjusts the cross-sectional area of the air passage 14, and the air passage adjustment device 26 is a substantially horizontal sliding plate that is supported in the air passage 14 so as to be slidable up and down as shown by the arrow. 27, and an adjusting screw 28 which is screwed onto the upper surface of the suction port body 11 so as to be rotatable forward and backward, and whose tip end is rotatably engaged with the sliding plate 27.

Then, when the adjusting screw 28 is lowered, the sliding plate 27
The pressure also decreases, the air passage 14 becomes narrower, and the airflow passing through the air passage 14 becomes faster, but the volume of this airflow also becomes smaller and its pressure decreases. That is, the difference between the pressure inside the air passage 14 and the outside pressure becomes large. Therefore, fluctuations in the pressure within the air passage 14 become large, and the vibrations of the membrane body 18 and the vibrating body 19 also become intense. At this time, pressure changes within the air passage 14 due to changes in the state of the surface to be cleaned as the suction port main body 11 travels also increase. On the other hand, when the adjusting screw 28 is raised, the sliding plate 27
The air flow also rises, the air passage 14 becomes wider, and the airflow passing through the air passage 14 becomes slower, but the volume of this airflow also increases and its pressure increases. Therefore, this pressure fluctuation becomes smaller, and the vibrations of the membrane body 18 and the vibrating body 19 also become weaker.

According to the configuration of this embodiment, the user can adjust the force with which the vibrating body 19 strikes the surface to be cleaned by changing the magnitude of the vibration.

(Effects of the invention) According to the invention, an isolation chamber is formed between the suction port and the air path by a partition wall and a membrane stretched facing the air path within the main body of the suction port, and this isolation room Since it supports a large number of vibrating bodies connected by spring bodies, the membrane body is vibrated by the airflow passing through the air path, and the vibrating bodies are vibrated to efficiently knock out dust from surfaces to be cleaned such as carpets. Furthermore, the vibrating body is free from lint, hair, etc. that are sucked into the suction port and is not wrapped around and attached to the vibrating body, so that the vibrating body can reliably vibrate and provide stable performance.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the suction port of a vacuum cleaner showing an embodiment of the present invention, Fig. 2 is a cross-sectional view showing the same state during cleaning, Fig. 3 is a top and bottom view of the same, and Fig. 4 is the main body of the vacuum cleaner. FIG. 5 is a sectional view of a suction port body of a vacuum cleaner showing another embodiment of the invention. FIG. 5 is a sectional view of a suction port body of a vacuum cleaner showing another embodiment of the invention. 11...Suction port body, 13...Suction port, 14...
...Air passage, 15...Partition wall, 16...Isolation room, 18
...membrane body, 19...vibrating body, 20...spring body.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A suction port body having a suction port opened at the bottom and an air passage communicating with the suction port provided therein, the suction port body having a suction port provided on the rear side of the suction port; The suction port and the air passage are separated from each other by a partition wall and a flexible membrane extending from the upper surface of the partition wall facing the air passage, forming an isolation chamber that opens at the bottom. 1. A suction port body for a vacuum cleaner, characterized in that a large number of vibrating bodies are provided in the isolation chamber in close proximity to the lower part of the membrane body, and are interconnected in parallel in the horizontal direction by spring bodies. (2) The suction port body for a vacuum cleaner according to claim 1, wherein the diameters of the plurality of vibrating bodies are made non-uniform.