JPH0328211B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a vacuum cleaner in which a hose connection pipe is rotatably connected to a vacuum cleaner body.

Conventionally, in this type of vacuum cleaner, as shown in FIG. 3, a lid 2 for opening and closing the collection chamber is provided in front of the vacuum cleaner body 1, and a hose 3 is installed on the horizontal upper surface of the lid 2. A hose connection pipe 5 connected at one end is rotatably coupled with its vertical axis 4 as a rotation axis, or
As described in Japanese Patent No. 35574, there was a vacuum cleaner in which a joint that rotates in a horizontal or vertical plane was provided on the front of the main body of the vacuum cleaner, and a hose connection pipe was connected to this joint.

These prior art techniques suggest a so-called two-dimensional connection arrangement in which the hose connection tube is rotated in a horizontal or vertical plane.

Furthermore, rotation in all directions, the so-called 3
As a dimensional connection configuration, Utility Model Application Publication No. 49-73262,
Those that adopt a general universal joint as described in Japanese Utility Model Publication No. 51-87952, and
There are also some that use a gyroscope type joint, as described in Publication No. 34622. There is also one in which the hose connection part is sloped, as in Japanese Utility Model Publication No. 50-21892.

Problems to be Solved by the Invention However, while the former two-dimensional configuration is convenient for cleaning flat surfaces such as floors, it is difficult to clean high places such as the tops of shelves and ceilings. In some cases, there were issues with the suction device not being able to reach or slipping. In addition, when the hose 3 is used standing up in the middle of a staircase as shown in Fig. 4, the hose 3 may be bent and damaged.

In addition, in the latter three-dimensional connection configuration using a joint, the joint configuration inevitably becomes complicated, which poses a problem that leads to high costs.

More importantly, in any of the above-mentioned conventional techniques, air flow resistance increases depending on the usage pattern, leading to a decrease in performance as a vacuum cleaner.

In other words, in the former case, when cleaning high places, a part of the hose near the hose connection tube is bent, which increases air flow resistance and puts undue force on the hose. This may cause damage etc.

In the latter case, there is no problem if the hose connection pipe is directed forward, but when it is directed upward or laterally, the airflow passage becomes bent. In particular, when a universal joint is provided on the front wall of the dust collection chamber as described in Japanese Utility Model Application Publication No. 49-73262, the form of air inflow into the dust collection chamber changes, which affects dust collection. Also, the movement of the joint may be obstructed by the collected dust.

Furthermore, in the vacuum cleaner described in Publication of Utility Model Publication No. 50-21892, since the angle of inclination of the hose connection part was small, the connection structure was closer to a two-dimensional connection structure than a three-dimensional one, and the problem could not be solved. In addition, since the hose connection part protrudes above the top surface of the vacuum cleaner body, the tensile force applied through the hose acts on the top of the vacuum cleaner body, making it unstable and sometimes causing problems such as overturning. Ta.

The present invention solves these conventional problems and aims to provide a vacuum cleaner that is even more convenient to use.

Means for Solving the Problems In order to achieve the above object, the present invention provides a vacuum cleaner with an electric blower and a dust collecting chamber for filtering and collecting dust in dust-containing air. A hose connection surface having an inclined shape is formed, into which a hose connection pipe provided at one end of the hose is rotatably inserted and connected with the normal line to the hose connection surface as the central axis, and This hose connection pipe is bent at an obtuse angle so that the hose connection side faces almost forward and upward due to its rotational movement, and the connection part of the hose connection pipe to the hose connection surface is set from the upper end surface of the vacuum cleaner body. It is located at the bottom.

Effects The effects of the configuration of the vacuum cleaner of the present invention described above are as follows.

Usability The hose connection tube changes direction in the direction of the force applied to the hose to prevent the vacuum cleaner from moving or falling over. For example, when cleaning high places, the hose connection tube has an obtuse angle The tip position of the tube is also displaced upward to assist the suction tool to reach the tube.

Dust absorption The angular shape of the hose connection pipe and the fact that there is virtually no bending in the hose when facing in any direction allows a predetermined air flow pattern to be maintained, which allows for smooth air flow. Dust suction operation is performed.

Durability of Hose As described above, bending of the hose is substantially prevented, so that no excessive force is applied to it.

Construction: Due to the rational combination of the slope of the hose connection surface and the obtuse-angled hose connection pipe, there is no need to adopt a complicated construction such as a universal joint.

Embodiment The embodiment will be described below with reference to FIGS. 1 and 2.

In the figure, the vacuum cleaner main body 11 is divided into two parts, front and back, and an electric blower 12 is provided on the rear side.
It accommodates a cord winding device (not shown), etc., and the front side includes a suction device, an extension pipe (not shown), and a hose 13.
A dust collection chamber 15 houses a filter unit 14 for collecting and depositing dust sucked in through the filter unit. 16 is the vacuum cleaner body 1
a pair of rear wheels attached to both sides of the rear end of 1;
Reference numeral 17 denotes a front wheel attached to the back of the bottom of the dust collection chamber 15, which facilitates movement of the vacuum cleaner during use.

Reference numeral 23 is a hose connection pipe provided at one end of the hose 13 and bent at an obtuse angle in the middle, and is inserted and connected to the hose connection surface 24 of the upper lid 19 that closes the dust collection chamber 15 so as to be openable from above. , freely rotates about the normal line 31 to the hose connection surface 24 as a rotation axis. As a result, the hose 13 can freely rotate relative to the cleaner body 11.

Further, the hose connection surface 24 of the upper lid 18 is formed to be inclined forward by 30 to 60 degrees with respect to the floor surface. The hose connection pipe 23 is inserted into and connected to the rotating plate 18. The rotary plate 18 is disposed between the upper lid 19 and the upper lid abutting plate 20. Reference numeral 21 designates a rotary plate contact plate fixed to the rotary plate 18, and 22 also represents a rotary plate support plate.

Reference numeral 25 denotes a paper bag frame glued to a paper bag 27, which is arranged in the dust collection chamber 15 so as to come into contact with the rubber valve 26 attached to the top cover plate 20, and which accumulates the inhaled dust inside. The filter unit 14 is composed of a paper bag 27 and a paper bag frame 25, and is supported by a rib 28 in the dust collection chamber 15 and a bag support frame 29. Buckle 3
0 is attached to the top cover 19 and engaged with the main body 11, and the paper bag 27 is replaced by releasing the top cover 19 and lifting the top cover 19 upward.

Also, insert the hose connection pipe 23 into the rotating plate 18.
When connected, the connecting portion is located below the upper end surface of the cleaner body 17.

In the above configuration, the hose connection pipe 23 is bent at an obtuse angle and rotates about the normal line 31 to the inclined hose connection surface 24 as the rotation axis. It can also be rotated arbitrarily. Therefore, the cleaning range when the cleaner main body 11 is not moved is expanded, and the usability can be improved accordingly.
Furthermore, since the hose connection pipe 23 changes direction following the hose 13 as described above, the hose 13 does not bend. Moreover, the air flow path from the hose 13 to the hose connection pipe 17 can also be made resistance-free.

By the way, the tip of the hose connection pipe 23 (the end on the hose connection side) is connected to the hose 1 due to its rotational movement.
3 in the direction of tension action, ie closer to the area being cleaned at the time. for example,
When cleaning is being performed at the front of the vacuum cleaner as shown by the solid line in FIG. Also, when cleaning high places such as ceilings, as shown by the dashed line, the shape protrudes upward. Therefore, in either case, the length of the hose connection pipe 23 (the direct distance connecting both ends of the hose connection pipe) is added to the length of the hose 13, and the cleaning range can be expanded by that amount. It is.

Further, as described above, the inclination angle θ ₁ of the hose connection surface 24 is 30 to 60 degrees;
The bending angle θ ₂ is set in the range of approximately 120 to 150 degrees in order to almost fully fulfill the above-mentioned function.

Effects of the Invention As described above, according to the present invention, since the hose connection pipe follows in any direction, the ease of use of the vacuum cleaner is greatly improved. Since the joint is mainly configured in combination with a surface, the construction can be simplified compared to one using a universal joint, and a product can be provided at a correspondingly low cost.

Furthermore, since the hose is prevented from bending, breakage is less likely to occur, and it can be used satisfactorily for a long period of time, and there is no increase in air flow resistance, which allows for efficient cleaning.

Furthermore, in the present invention, the length of the hose connection tube is effectively utilized to make the dust suction path longer, so the cleaning range is expanded accordingly.
It has excellent effects such as being able to further improve usability.

In addition, since the connection part of the hose connection pipe to the hose connection surface is lower than the top surface of the vacuum cleaner body, the vacuum cleaner body will not roll over due to the force of pulling the hose. , it is possible to move the vacuum cleaner stably and further improve operability.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway sectional view of a vacuum cleaner according to an embodiment of the present invention, FIG. 2 is a side view, FIG. 3 is a side view of a conventional vacuum cleaner, and FIG. 4 is an explanatory view of its use. 11...Vacuum cleaner body, 12...Electric blower, 13...
Hose, 17...Hose connection pipe, 24...Hose connection surface.

Claims (1)

[Scope of Claims] 1. A hose connection surface that is slanted forward is formed in front of a vacuum cleaner body that is equipped with an electric blower and a dust collection chamber that filters and collects dust in dust-containing air. A hose connecting pipe provided at one end of the hose is inserted and connected to this hose connecting surface so as to be rotatable with the normal line to the hose connecting surface as the center axis, and furthermore, this hose connecting pipe is connected to the hose by its rotational movement. This vacuum cleaner is bent at an obtuse angle so that the connection side faces almost forward and upward, and the connection part of the hose connection pipe to the hose connection surface is located below the top surface of the vacuum cleaner body. 2 When the inclination angle of the hose connection surface is θ ₁ and the bending angle of the hose connection pipe is θ ₂ , θ ₁ = 30 to 60 degrees, θ ₂ ≒ 120
The vacuum cleaner according to claim 1, wherein the vacuum cleaner is set at a temperature of ~150 degrees.