JPH0647405Y2 - Rotating brush for upright type vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to an upright type vacuum cleaner, a rotary brush built in an electric floor nozzle, and the like.

2. Description of the Related Art Conventionally, this type of rotary brush is disclosed in Japanese Utility Model Publication No. 55-173727 or Japanese Utility Model Publication No. 59-171655.
It had a structure as shown in FIG.

That is, the rotating brush 1 includes a rotating body 2, a shaft 3 protruding from both ends thereof, and bristles 4 planted on the peripheral surface thereof, and the shaft 2 is directly press-fitted and fixed to the rotating body 2. Further, since the rotating body 2 has spiral convex portions 2a and concave portions (not shown) on its peripheral surface, many of them are formed by extrusion molding, and
Foam resin was generally used to reduce weight. Reference numeral 5 is a bearing device that supports a shaft 2 protruding from both ends of the rotary brush 1.

Problems to be Solved by the Invention Such a conventional rotary brush 1 has a structure in which the shaft 3 protruding at both ends of the rotary body 2 is supported by the support device 5, and the support provided at both ends of the rotary body 2 The size of the device 5 is determined by the size of the bearing, and the bearing width is determined by the rotation speed and load of the rotating brush, and cannot be narrower than a certain value because of the life. For this reason, since the rotating body 2 for implanting the bristles 4 cannot be swung to the end, the uncleaned portion where the bristles 4 do not hit the floor surface even if the rotating brush 1 is rotated to scrape up dust is There are many problems due to walls and walls.

The present invention solves these problems, and an object thereof is to provide an upright type vacuum cleaner in which a rotating brush having a small number of uncleaned portions and a long bearing life is inexpensively constructed.

Means for Solving the Problems The technical means of the present invention for solving the above problems is to make a rotating body of a rotating brush into a hollow shape, and press a bearing from both sides into the hollow portion to support the bearing. The device is configured so that a shaft that is cantilevered and fixed to the device is inserted and supported from the inside.

Action The action of this technical means is as follows.

First, by forming a rotating body of a rotating brush into a hollow shape, press-fitting a bearing into this hollow portion, and inserting a shaft that is cantilevered and fixed to a supporting device into this bearing from both sides to support it. The device can be miniaturized, so that the rotating body can be provided up to the end and hair can be planted at the end to reduce uncleaned portions.

Further, by forming the rotor in a hollow shape, it is not necessary to process the prepared hole for press-fitting the bearing, and the processing cost is reduced. Further, even if the precision of the prepared hole is not accurate, the machining allowance for producing the precision is small, so that the machining time is short and the machining cost is low.

Further, since the width of the bearing can be made wider than in the conventional case, the bearing area of the shaft is increased, so that the load applied to the bearing is reduced and the life of the bearing can be extended.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 to 5, 11 is an upper body of the vacuum cleaner, 12
Is a lower body of the electric vacuum cleaner, 13 is a dust container detachably disposed on the upper body 11, and is engaged with the upper body 11 by a hook 14 provided on the hook 14 and the upper portion of the dust container 3. It has stopped.
Reference numeral 16 is a filter device which is detachably arranged in the opening of the dust container 13. Reference numeral 17 denotes an electric blower built in the upper main body 11 and the lower main body 12, which has a drive shaft 18 at a rear portion and a front support rubber.
It is supported by 19 and a rear support rubber 20. 21 is the upper body
11 and the first shaft portion 22, which is integrally formed with the lower body 12, the second
It is a suction tool that is rotatably locked by a first metal fitting 24 and a second metal fitting 25 fitted to the shaft portion 23, and has a bumper 26 for preventing furniture damage on the front and side surfaces. 27 is a suction tool
It is a rotating brush arranged at the front of 21.

The rotating brush 27 is also provided with 30 in a rotating body 29 having a spiral convex portion 28 or a concave groove (not shown) formed on the outer periphery, and the rotating body 29 is made of foamed resin such as foamed PS or foamed ABS. It is formed by hollow extrusion molding.

Bearings 32 are press-fitted into the hollow portion 31 of the rotating body 29 from both sides.
It is configured to insert and support 34.

As a result, since the bearing is housed inside the rotor, the support device can be made smaller, and by implanting hair with the rotor at the ends, the uncleaned portion that does not come into contact with the hair 30 on the floor surface is reduced. Is considered as.

Further, with this configuration, the bearing width can be widened, so that the durability is improved.

Reference numeral 35 is a vibration absorbing bearing rubber fitted around the support device 33. A pulley 36 is fitted and fixed to one end of the rotary brush 27, and transmits the rotation of the electric motor 17 to the rotary brush 27 by a belt 37 made of rubber such as silicon rubber and hung between the pulley and the drive shaft. Reference numeral 38 denotes a belt protection lid for protecting the belt 37, which is attached by fitting a projecting portion 40 into a mounting hole 39 formed integrally with the first metal fitting 24. Reference numeral 41 is a back lid which is attached to the lower surface of the suction tool 21 and serves as a protective lid. 42 is suction port 21
The hose connecting the dust container 13 to the dust container 13, 43 is a wheel, and 44 is a handle fixed to the upper body 11.

Effect of the Invention The present invention is constructed by installing the bearing in the rotating body,
It is possible to reduce the amount of uncleaned portion where the bristles do not come into contact with the floor when the rotary brush for planting the bristles is provided up to the end of the suction tool and the rotary brush is rotated to scrape up the dust.

Further, the width of the bearing can be increased to the size of the maximum rotating body, and the supporting area for supporting the load can be increased, so that the life of the bearing can be significantly improved.

Further, by forming the rotary body in a hollow shape, it is not necessary to form a pilot hole for press-fitting the bearing, and the processing cost is low.

Even if the prepared hole and dimension are not accurate, the machining allowance is small to obtain the accuracy, so the machining time is short and the machining cost is low.

[Brief description of drawings]

FIG. 1 is a partial sectional view of a rotary brush showing an embodiment of the present invention, FIG. 2 is a perspective view of an upright type vacuum cleaner adopting an embodiment of the present invention, and FIG. 3 is a sectional view of the same. FIG. 4 is a rear view of the suction tool with the back lid and the belt protection frame removed, FIG. 5 is a sectional view of the suction tool, and FIG. 6 is a partial sectional view of a rotary brush in a conventional example. 27 ... Rotating brush, 29 ... Rotating body, 30 ... Bristles, 31 ... Hollow part, 32
… Bearings, 33… Support devices, 34… Shafts.

Claims (1)

[Scope of utility model registration request] 1. A rotary brush rotary body is extruded into a hollow shape, and spirally bristles are planted on the outer circumference of the rotary body.
Rotating brushes for upright cleaners, etc., in which bearings are press-fitted and fixed from both sides, and cantilevered shafts are inserted into and supported by supporting devices from both sides of the rotating body.