JPH02218319A - Floor nozzle for vacuum cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a floor nozzle for a vacuum cleaner having a main and a secondary agitator.

2. Prior Art Conventionally, as shown in FIGS. 4 and 5, this type of floor nozzle lv
1 had a secondary agitator 3 at the end of the main agitator 2. The secondary agitator 3 has a rotor 7 mounted on a secondary holder 6 attached to an agitator shaft 6 press-fitted into the holder 4 of the main agitator 2, and the rotor 7 is made of a combustible material. and a secondary agitator on the circumference.
The stirring blade 8 had a length of about 5 m in the thrust direction of the rotor 3 and a thickness of about 1 fl, and had three stirring blades 8 protruding in the radial direction of the rotor 7. When the sub-agitator 3 rotates in conjunction with the rotation of the main agitator 2, the stirring blade 8 stirs up dust in the corner of the room that cannot be captured by the main agitator 2, and sucks the dust into the vacuum cleaner body. This improves the dust collection performance of the parts.

Problem to be Solved by the Invention However, when the agitating blade 8 stirs up fine and long fibrous dust such as hair, it is sucked into the main agitator chamber 1o through a passage communicating between the sub-agitator chamber 9 and the main agitator chamber 10. Before this happens, the stirring blade 8 gets caught in the rotation direction. When this phenomenon accumulates, one end of the entangled hair will be pulled by the resistance of the carpet, etc., and the other end will be pulled by the rotor 7.
When the winding phenomenon continues, the dust intrusion prevention gasket A11. Bearing A that pushes away the packing B12 and rotatably holds the agitator shaft 6
13. This caused a problem in that the particles entered the center of the bearing B14 and eventually wrapped around the agitator shaft 6, stopping the rotation.

The object of the present invention is to solve this problem and provide an agitator with excellent usability and durability.

Means for Solving the Problems In order to solve these conventional problems, the first means of the present invention is to rotatably support a main agitator and a sub-agitator located at an end of the main agitator by bearings, The sub-agitator is attached to the main body of the suction device together with the driving source thereof, and the sub-agitator has flexible stirring blades formed to protrude in the outer circumferential direction from the circumferential surface of the substantially cylindrical rotor, and the bearing is attached to the sub-agitator.
A cylindrical protection cylinder located on the outer periphery of the substantially cylindrical rotor is provided near the base of the stirring blade, and the second means is such that the protection cylinder has a cylindrical protection cylinder located on the outer periphery of the rotor. A third means is provided with a dust scraping rib that is inclined with respect to the thrust direction of the dust scraping rib.The third means is that the dust scraping rib is made to protrude from the end surface of the protective cylinder toward the stirring blade side.

Operation In the first means of the present invention, the bearing is provided near the base of the stirring blade of a cylindrical protection cylinder located on the outer periphery of the sub-agitator (substantially cylindrical rotor), and By overlapping the substantially cylindrical rotor with the protective cylinder of the bearing, it is possible to prevent hair, etc., from becoming entangled around the outer periphery of the substantially cylindrical rotor. In the second means, a dust removal rib is provided on the outer periphery of the protective cylinder, and the rib is inclined with respect to the thrust direction of the bearing. Keep dust such as hair rotating on the outer periphery away from the bearing to prevent hair from curling up.
In the third means, the dust removal rib is made to protrude from the end face of the protection tube toward the stirring blade, thereby improving the effect of keeping hair away from the bearing.

Example Examples thereof will be described below with reference to the accompanying drawings.

1 to 4, a floor nozzle main body 21 is obtained by combining upper and lower main body members 23 and 24 via a bumper 22, and a lower opening is provided in the front interior of the nozzle main body 21.
A suction chamber 2e with a diameter of 6 is formed.

The center of the suction chamber 2e communicates with a communication pipe 27 which is held between the upper and lower body members 23 and 24 at the rear of the floor nozzle main body 21 so as to be able to move up and down, and a connection pipe 28 which is rotatably connected to the communication pipe 27. Moreover, an extension tube connected to the suction side of the vacuum cleaner via a hose is detachably connected to this connecting tube 28.

Agitator drive motors 2 are installed on the left and right sides of the connecting pipe 28.
9 and a control section 3o for controlling the same are installed inside, and are supplied with power through a power cord 31.

32 is a main agitator provided in parallel to the suction chamber 26, and bearings A33 are provided on both side walls of the suction chamber 2e.
．． It is rotatably held by the same B34.

The shaft 36 of the main agitator 32 is bearing A33° and bearing B
Protruding in any direction further than 34, here is the sub-agitator-3.
6 is the attachment. This sub-agitator 36 has an opening A37 formed in the side wall of the floor nozzle body 21. It is like facing the same B38.

A bell 40 is pulled between a pulley 39 provided on one side of the main agitator 32 and a pulley provided on the rotating shaft of the motor 290, and the main and sub agitators 32.degree. 3e are forcibly driven.

The main agitator 32 has a substantially cylindrical rotating body 41.

It consists of a stirring band 42 made of a flexible material that is continuously attached to the outer peripheral surface in the longitudinal spiral direction.

On the other hand, the sub-agitator 36 includes a substantially cylindrical base 43 made of a rigid material such as synthetic resin, a cap-shaped rotor 44 wrapped around the outer periphery of the base 43, and an opening A37. It consists of three stirring blades 46 that protrude and spread like a trumpet toward B38. This stirring blade 46 is formed integrally with the rotor 44 from a combustible material such as rubber.

The base 43 is connected to the shaft 36 of the main agitator 32, transmits rotation to the rotor 44, and maintains the shape of the rotor 44 made of combustible material.

46 is the bearing A3G, a gasket such as felt for preventing dust from entering into the shaft 36 penetrating portion of the same B34, and 47 is a front lid that is detachably attached to the upper body member 23 and covers the suction chamber 26 so as to be openable and closable. It is.

47 is bearing A33. A cylindrical protection tube is located on the side of the auxiliary agitator 36 of the B34 and on the outer periphery of the rotor 44, and overlaps the rotor 44.

48 is located on the outer periphery of the protection tube 47, and the bearing A3
3. This is a dust ejection rib having an inclined surface 49 with respect to the thrust direction of B34. The dust removal rib 48
protrudes from the end face of the protective cylinder 47 at 5° toward the stirring blade 46 by a dimension S (approximately 1.6 m).

Next, the first operation in the above configuration will be explained.

When the motor 29 is operated, the belt 40 transmits this rotation and the main agitator 32 moves upward → forward → downward → backward →
It rotates upward, and uses the repelling action of the agitation band 42 and the suction force of the vacuum cleaner to release dust from non-cleaned surfaces such as carpets and suck the dust.

On the other hand, since the stirring blade 45 of the sub-agitator 36 has a thin wall of about 1.5 fl in the direction of rotation, it penetrates to the roots of fibers in carpets, etc., and scrapes up elongated fibrous dust such as hair, which is difficult for the stirring band 42 to capture. , and the floor nozzle body 2
The main agitator 32 is located on the side of the main agitator 32 and works effectively for cleaning corners of the room where it is difficult to operate.

By the way, when the stirring blades 46 stir up thin and long fibrous dust such as hair and roll it in in the rotation direction before suctioning it into the vacuum cleaner body through the suction chamber 26, the three stirring blades 4
It wraps around the base of the main agitator 32 of No. 6. As this phenomenon gradually accumulates, it is transmitted along the outer circumference of the rotor 44 to the bearing A33. Although the fibrous dust tries to enter the B 34, the protection tube 47 prevents it from wrapping around the rotor 44, and at the same time, the fibrous dust scraped up by the rotor 44 is dragged by the rotor 44 and rotates. Since the outer diameter of the rotor 44 is smaller than the inner diameter of the protective tube 47, that is, the fixed part is located outside of the axis relative to the rotating part, the winding phenomenon is less likely to occur, and the shaft 36 This prevents dust from entering the penetration part. Moreover, the rotor 4
The fibrous dust rotating along with the bearing A33.4 hits the inclined surface 49 of the dust scraping rib 48 of the protection cylinder 47 and is scraped out from the opening A37° to the direction B38. It is always kept away from the same B34 to cause the curling phenomenon.

Furthermore, the greater the amount of overlap between the rotor 44 and the protection tube 47, the better the above effect will be.

Effects of the Invention As described above, in the first means, the bearing is provided with a cylindrical protection cylinder located near the agitation blade, which is located on the outer periphery of the substantially cylindrical rotor of the sub-agitator, Sub-agitator〇 By configuring the substantially cylindrical rotor and the protection tube of the bearing to overlap, it is possible to prevent curling of hair, etc. on the outer periphery of the substantially cylindrical rotor.
In the second means, a dust removal rib is provided on the outer periphery of the protection cylinder and is inclined with respect to the thrust direction of the bearing. The third means is to keep dust such as hair rotating on the outer periphery of the protective tube away from the bearing and to prevent the occurrence of curling of hair. By protruding from the end face of the cylinder toward the stirring blade, the effect of keeping hair and the like away from the bearing is improved.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing the structure of a floor nozzle according to an embodiment of the present invention with the upper main body member removed, Fig. 2 is a sectional view, Fig. 3 is a side view, and Fig. 4 is a top view of a conventional floor nozzle. FIG. 6 is a plan view showing the configuration with the main body member removed, and FIG. 6 is a sectional view. 21... Floor nozzle body, 32... Main agitator, 33... Bearing A, 34...
Bearing B136... Sub-agitator 144...
...Rotor, 45...Stirring blade, 47...
...Protective cylinder, 48...Dust stirring rib. Name of agent: Patent attorney Shigetaka Awano and one other person 1

Claims (3)

[Claims] (1) The main agitator and the sub-agitator located at the end of the main agitator are rotatably supported by bearings, and are attached to the floor nozzle body together with their drive source, and the sub-agitator is located at the outer periphery of the approximately cylindrical rotor. The bearing has a flexible stirring blade formed to protrude in the direction, and the bearing is provided with a cylindrical protection cylinder located near the root of the stirring blade located on the outer periphery of the substantially cylindrical rotor of the sub-agitator. A floor nozzle for vacuum cleaners. (2) The floor nozzle for a vacuum cleaner according to claim 1, wherein a dust scraping rib is provided on the outer circumferential portion of the protective cylinder and is inclined with respect to the thrust direction of the bearing. (3) The floor nozzle for a vacuum cleaner according to claim 2, wherein the dust scraping rib protrudes from the end surface of the protective tube toward the stirring blade.