JPH0724642B2 - Vacuum cleaner suction body - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port body with an electric rotating brush for an electric vacuum cleaner, and an opening extending in the vicinity of an end portion of the rotating brush over substantially the entire width in the front-rear direction of the housing. The suction port can be provided to enable cleaning in a narrow space or the like without lowering the dust collection efficiency.

[Prior Art] Generally, an electric vacuum cleaner shown in FIG. 2 is known (see Japanese Utility Model Laid-Open No. 55-174839). In FIG. 2, reference numeral 1 is a main body of the electric vacuum cleaner, and the main body includes a suction machine, a motor for driving the suction machine, a filter for filtering dust, and the like. Reference numeral 2 is a suction hose, 3 is a telescopic tube, and 4 is a suction port body attached to the tip of the telescopic tube. Reference numeral 5 denotes a power supply cord for the motor, and 6 denotes a power supply cord for a motor, which will be described later, built in the suction port body 4.

In the electric vacuum cleaner as described above, dust is sucked together with air from the suction port body 4 through the suction hose 2 and the expansion tube 3 by the suction device, and the dust is filtered by the filter so that substantially only air is discharged. Therefore, the floor surface is cleaned by moving the suction port body 4 along the floor surface to be cleaned.

3 and 4 are enlarged bottom views of the suction port body 4 described above, and FIG. 4 shows a state in which the lid body on the bottom surface is removed.

Incidentally, in FIGS. 2 to 4, the same reference numerals indicate the same parts.

In FIG. 3, reference numeral 7 denotes a housing of the suction port body 4, the housing has a lid body 8, and the lid body is provided with a suction port 9 formed of a horizontally long opening. From this suction port 9, the housing 7
A rotating brush 10 described later, which is housed in, is exposed.

As shown in FIG. 4, the rotary brush 10 is provided with large-diameter portions 11 and 12 near one end and the other end thereof, and these large-diameter portions are attached to the bearing portions 13 and 14 of the housing 7. It is rotatably attached. Further, the rotating brush 10 is provided with a brush 15 and a beater 16 with bristles planted on its peripheral surface. A driven pulley 17, which will be described later, is integrally provided at the other end of the rotating brush 10.

Reference numeral 18 denotes the above-mentioned motor. A belt 19 is wound around the driven shaft of the motor to the driven pulley 17, and the motor 18 drives the rotary brush 10. Sign
Reference numeral 20 denotes an intake passage, one end of which is opened near the rotary brush 10 and the other end of which is connected to the expansion tube 3.

In the suction port body 4 as described above, when the bottom surface of the suction port body 4 is moved against a carpet or the like to be cleaned, the carpet or the like is hit by the beater 16 of the rotating brush 10 rotated by the motor 18, and the gap between the bristles is lost. Sand and dust are blown out, which are further scratched out by the brush 15 and sucked into the intake passage 20 together with air.

[Problems to be Solved by the Invention] In the suction port body 4 of the electric vacuum cleaner described above, the driven pulley 17 is provided at the end of the rotating brush 10, and the rotation from the motor 18 is transmitted to the buri via the belt 19. Therefore, the width of the bottom surface of the housing 7 in the vicinity of the end of the rotary brush 10 before and after being not opened by the suction port becomes relatively large.

As described above, when the front and rear widths of the rotary brush 10 which are not opened in the vicinity of the ends thereof are large, the following is compared with the case where the width is substantially equal to the front and rear widths of the suction port 9. It causes drawbacks.

That is, assuming that the front and rear width of the suction port 9 near the end of the rotating brush 10 is substantially constant, the suction opening 9 near the end of the rotating brush 10 is formed of an opening extending over the entire width of the housing 7 in the front-rear direction. Compared with the case where the mouth 9 is provided, the width of the housing 7 in the front-rear direction becomes wider, which makes it impossible to clean in a narrow space, and also cleans the floor surface around the legs of the installed table or the like. In this case, when the suction port body 4 is moved to the rear side of the leg while the expansion tube 3 is oriented from the front side of the leg to the side surface side of the leg, the suction is performed in the drawings of FIGS. 3 and 4. Since the lower end near the right or left end of the mouth comes into contact with the leg, and the floor surface immediately after the leg cannot be covered with the suction port 9, the floor surface immediately after the leg is not sucked. There are drawbacks.

Therefore, in the latter case, it is necessary to clean from the side of the leg, or move the table or the like to clean.
Cleaning efficiency becomes poor.

The present invention eliminates the above-mentioned drawbacks, makes it possible to clean in a relatively narrow place, and also allows the floor surface immediately behind the legs to be easily cleaned from the front side of the legs with an electric rotating brush. It provides the mouth.

[Means for Solving the Problems] In order to solve the above problems, according to the present invention, rotation of a suction port body of an electric vacuum cleaner via a rotation transmission means from a motor is performed at a portion other than an end portion of a rotating brush. Is equipped with a driven pulley to transmit the rotating brush, motor, etc.
It is stored in a letter-shaped case.

Further, one end of the intake passage, the other end of which is connected to the suction unit of the electric vacuum cleaner body, is divided into two forks, which are opened in the vicinity of the respective portions of the rotary brush divided by the driven pulley. .

[Operation] In the suction port body 4 of the electric vacuum cleaner configured as described above,
A suction port 9 having an opening extending over substantially the entire width in the front-rear direction of the housing 7 can be provided in the vicinity of the end of the rotary brush 10, and therefore cleaning can be performed in a relatively narrow place, and a table or the like installed on the rotary brush 10 can be installed. It is possible to clean just behind the leg from the front side of the leg without moving the leg.

Further, a driven pulley to which the rotation is transmitted from the motor through the rotation transmission means is provided in a portion other than the end portion of the rotating brush,
And, if one end of the intake passage, the other end of which is connected to the suction machine, is opened only in the vicinity of one portion of the rotary brush divided by the driven pulley, the other portion of the intake passage is divided by the driven pulley. Dust collection efficiency is reduced.

In the present invention, one end of the intake passage, the other end of which is connected to the suction device, is divided into two parts and opened near each part of the rotary brush divided by the driven pulley. Sufficient dust collection power can be obtained at each part divided by the driven pulley.

[Embodiment] An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a plan view in which a part of the suction port body is cut away, and the same reference numerals as those in FIGS. 3 and 4 described as the conventional example indicate substantially the same parts, and therefore detailed description thereof will be given. Is omitted. Reference numeral 21 is a rotating brush, the brush 15 and the beater 16 described above are provided on the peripheral surface thereof, and the bearing portion 13,
It is rotatably attached to the housing 7 by 14. The rotary brush 21 is provided with a driven pulley 22 other than its end portion, and a belt 19 is hung between the pulley and the main shaft of the motor 18.

The motor 18 is installed substantially in the center on the left and right of the housing 7.

Reference numeral 23 is an intake passage, one end of which is divided into two branches and opened near the rotary brush 21, and the other end of which is connected to the expansion tube 3 described in FIG. Reference numeral 24 denotes a dust-proof cover portion that substantially covers the pulley 22 and the lower half of the belt 19, and is formed integrally with the bottom plate 25 of the housing 7.
The cover portion 24 has a shape in which the inner surface side of the housing 7 is along the pulley 22 and the belt 19.

The suction port 9 is divided into two parts by the cover part 24, but since the bottom surface side of the cover part is formed in a semi-cylindrical shape with the longitudinal direction of the housing 7 as the axial direction, the lower surface of the cover part 24. The decrease in the dust absorption effect is relatively small.

In addition to the cover portion 24, the pulley 22 and the belt
A dustproof cover (not shown) that substantially covers the upper half of 19 is also built in the housing 7.

As described above, if both ends of the rotating brush 21 are supported by the bearing portions 13 and 14 and the driven pulley 22 is provided at a portion other than the ends of the rotating brush 21, the rotating brush may be bent by the tension of the belt 19. In this case, a rigid shaft may be passed through the core of the rotary brush 21, or a timing belt that can be used even if the tension is relatively weak may be used.

[Effects of the Invention] As described above, according to the present invention, in the suction port body 4 of the electric vacuum cleaner, the rotation from the motor 18 is transmitted to the portion other than the end portion of the rotary brush 21 through the rotation transmission means such as the belt 19. A driven pulley 22 is provided, and these rotating brush 21 and motor 18 are provided.
Since the above is housed in a substantially cross-shaped casing 7, a suction port 9 formed of an opening extending over substantially the entire width of the casing 7 in the front-rear direction can be provided near the end of the rotating brush 10. Therefore, in addition to being able to clean in a relatively narrow place, it is possible to clean immediately behind the leg from the front side of the leg without moving the installed table or the like.

Then, one end of the intake passage 23, the other end of which is connected to the suction device of the electric vacuum cleaner body 1 via the expansion tube 3 and the like, is divided into two, and is divided by the driven pulley 22 in the rotary brush 21. Since the opening is made in the vicinity of each part, a sufficient dust collecting force can be obtained in the vicinity of both parts of the rotary brush 21 divided by the driven pulley, and the dust collecting efficiency becomes high as a whole.
The effect is obtained.

By the way, a driven pulley to which rotation is transmitted from a motor via a rotation transmission means is provided in a portion other than the end portion of the rotary brush, and one end of an intake passage whose other end is connected to a suction machine is provided in the rotary brush. If the opening is made only in the vicinity of one portion divided by the driven pulley, the dust collection efficiency in the vicinity of the other portion divided by the driven pulley is reduced.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 2 is a perspective view showing a conventional example, FIG. 3 is an enlarged bottom view of an essential part of FIG. 2, and FIG. It is a bottom view showing the inside by removing a part of things. 4: Suction port body, 7: Case, 9: Suction port, 18: Motor, 19: Belt, 21: Rotating brush, 22: Driven pulley.

Claims (1)

[Claims] 1. A substantially T-shaped housing, a rotary brush housed in the housing so as to be disposed in a laterally long portion of the housing, and a rotary brush housed substantially in the center in the longitudinal direction of the rotary brush. A motor and rotation transmitting means for transmitting the rotation of the motor to the rotating brush,
A suction port body of an electric vacuum cleaner in which a suction port formed by an opening along a rotating brush is provided in a housing, and rotation from a motor is transmitted to a portion excluding an end portion of the rotating brush through a rotation transmission means. A driven pulley is provided, and one end of an intake passage, the other end of which is connected to the suction unit of the electric vacuum cleaner body, is divided into two parts, and the vicinity of each part of the rotary brush divided by the driven pulley is provided. The suction port body of the electric vacuum cleaner, which is characterized by being opened in the.