JPH02289217A - Sucker for floor - Google Patents

Abstract

PURPOSE:To prevent the seizures and damages of a bearing part and both end face parts of a rotary brush by the entwinement of thread trash by equipping flange tubes, which are provided circularly to cover pivots being provided at both ends of a rotary brush, and cap bodies, which cover, having spaces, the peripheries of the flange tubes, at the bearing parts. CONSTITUTION:A rotary brush 4 comprises a brush tube 19, where brush hair is planted spirally, pivots 20, which are set to left and right both ends of it, and brush holders 21 and 22, which are pivoted on this, and a flange tube 23 is provided circularly at each end so that it may cover the pivot 20, and a circular groove 25 is formed at the periphery 24 of each flange tube 23. For a bearing part 28, a bearing metal 29, which supports the pivot 20 freely in engagement, is press-fit in the inside, and a cap body 30 made of metallic plate, which covers, having space, the periphery 24 outside the flange tube 23, is fixed to the periphery, and for the cap body 30, an outward edge part 32 is formed at the opening and of a cover brim 31 which covers, having a space, the periphery 24 of the flange tube 23, and further an inward projection 33, which fits in the circular groove 25, is formed inward circularly.

Description

[Detailed description of the invention] (b) Industrial application fields The present invention relates to a floor suction tool used in a vacuum cleaner.

(B) Conventional technology In this type of floor suction device, have any measures been taken to prevent thread waste and other dust from entering the bearing part of the rotating brush? (Special Publication No. 39253/1983) There is a problem that the structure becomes complicated.

Especially the inlet of the main body case! If it is widened to the vicinity of the first surface, it is easy for thread waste to get tangled in the bearing part, and when the rotating brush rotates at high speed while the tangled thread waste comes into contact with the end face of the rotating brush, frictional heat is generated and the end face There was a risk that it would burn out and cause damage.

(C) Problems to be Solved by the Invention The present invention has a simple structure, and is designed to prevent the bearing and both end surfaces of the rotating brush from seizing and to eliminate damage even if some thread debris gets entangled in the bearing of the rotating brush. The purpose of this invention is to obtain a suction device for the floor.

(d) Means for Solving the Problems The floor suction tool of the present invention has a rotating brush chamber having a suction port on the lower surface in the main body case, and a connecting cylinder and a joint connected to the rotating brush chamber at the rear of the main body case. A rotary brush that is movably pivoted and rotatably driven by a rotary drive source in the rotary brush chamber includes a pivot shaft provided at both ends of the rotary brush, and a pivot shaft provided at both ends of the rotary brush; a flange cylinder provided around both ends of the rotating brush; a bearing part detachably supported on both side walls of the rotating brush chamber; The invention is characterized by comprising a cap body that covers the body.

Furthermore, the floor suction tool of the present invention is characterized in that the cap body is formed of a metal member, and an annular edge portion is formed at the opening end.

(e) Effect: With the above structure, even if lint gets entangled in the bearing, the lint does not come into contact with the rotating brush due to the cap body, so it will not seize up.

In addition, lint entangled in the rotating brush is less likely to get caught in the bearing section.

Furthermore, even if a long piece of lint tries to cross over both the rotating brush and the bearing portion, it will be cut by the annular edge portion formed on the cap body, thereby preventing the rotating brush from locking.

(F) Example Hereinafter, an example of the floor suction tool of the present invention will be explained based on the drawings.

In FIG. 1, 1 is a floor suction device, and 2 is the floor suction device 1.
The main body case 2 has a horizontally elongated housing shape, and the front part of the main body case 2 has a horizontally elongated suction port 3 on the lower surface and a brush chamber 5 in which a rotary brush 4 is rotatably supported, and a brush chamber 5 is formed in the rear part. A motor chamber 7 that houses a commutator-type motor 6 as a rotational drive source.
and a board chamber 9 for housing a printed circuit board 8 in which electronic components such as resistors for controlling the electric motor 6 are arranged are formed separately on the left and right sides, and the right side is provided with a board chamber 9 for controlling the rotation of the electric motor 6 by the rotating brush 4. A belt chamber 11 is formed in which a belt 10 for transmitting power is stored, and a connecting cylinder pivot portion 12 communicating with the suction port 3 is provided between the motor chamber 7 and the board chamber 9.
is formed.

Reference numeral 13 denotes a connecting tube that is connected to a suction hose (not shown) of a vacuum cleaner, and includes a semi-cylindrical pivot body 14 with an open front and a shaft pivoted to the pivot body 14 so as to be rotatable in left and right directions. The pivot shafts 16.16, which are located at the pivot axes on both the left and right sides of the pivot body 14, are rotatably inserted into the bearing holes 17.17 in the left and right side walls of the pivot joint 12. The connecting tube 13 is pivotally attached to the main body case 2 so as to be freely rotatable in the vertical direction by being loosely inserted and supported.

As can be seen from FIGS. 2 and 3, the rotating brush 4 includes a brush cylinder 19 in which a large number of brush bristles 18 are installed in a spiral pattern, and shafts at both left and right ends of the brush cylinder 19, respectively. It consists of left and right support shafts 20.20 mounted on the shaft, and left and right brush holders 21.22 respectively mounted on the support shafts 20.20, and each end of each brush holder 21.22 has a Flange strips 23.23 are provided around the respective shafts 20.20, and an annular groove 25.25 is formed on the outer circumferential surface 24.24 of each flange tube 23.23. Further, brush bristles 26 are installed in the left brush holder 21,
A belt pulley 27 is attached to the brush holder 22 on the right side.
is formed.

28. 28 is a left and right bearing part, and the bearing part 28 has a bearing metal 29 that loosely fits and supports the support shaft 20 inside thereof, and
A cap body 30 made of a metal plate is fixed to the outer circumferential portion of the cap body 30, which covers the outer circumferential surface 24 of the flange cylinder 23 at intervals. The cap body 30 has an outward facing part 32 formed at the open end of a cover flange piece 31 that covers the outer circumferential surface 24 of the seven flange m23 at intervals, and further has an inward facing part 32 that enters the annular groove 25. A protrusion 33 is provided facing inward. Furthermore, 34 is a seat plate inserted between the brush holder 21, 22 and the two bearing metals.

The left and right bearing parts 28.28 are connected to the main body case 2.
2 formed vertically on the inner surface of the left and right side walls 35.
By inserting the bearing into the bearing insertion well 37 formed by the longitudinal ribs 36.36, it is detachably supported by the left and right side walls 35.35.

With the above configuration, when the floor suction tool 1 is connected to the vacuum cleaner with the suction hose 5 and the suction hose 1 is connected to perform cleaning, the rotating brush 4 rotates at high speed due to the rotational driving force of the electric motor 6, scraping up dust on the cleaning surface. Inhale from suction port 3. At this time, even if lint is entangled in the bearing portion 28, the lint does not come into contact with the rotating brush 4 due to the presence of the cap body 30, so that frictional heat is generated and the brush boulders 21, 2 at both ends are
The two parts do not seize, and the rotating brush 4 is not damaged due to this seize. Furthermore, even if the rotating brush 4 becomes entangled with lint, the presence of the camp body 30 and the flange cylinder 23 makes it difficult for the lint to become entangled in the bearing portion 28.

Furthermore, even if a long thread debris tries to reach both the brush holders 21 and 22 on both sides of the rotating brush 4 and the bearing part 28, it will be cut by the annular edge part 32 formed on the cap body 30, and the rotating brush 4 will not rotate. This prevents the rotating brush 4 from stopping.

Furthermore, the flange tubes 2 of the brush holders 21 and 22 at both ends
3 and the cap body 30 of the bearing portion 28, there is only a small gap, so that dust does not enter the bearing metal 29 portion.

Furthermore, since the inward protrusion 33 of the cap body 30 is loosely fitted into the annular groove 25 of the flange cylinder 23, the bearing part 2
8 will not come off and be lost, and furthermore, the bearing part 28 will not come off when assembled into the main body case 2 after cleaning.

(G) Effects of the Invention Since the floor suction tool of the present invention is constructed as described above, the simple construction prevents the both end faces of the rotating brush from seizing due to entanglement with thread waste, and prevents damage to the rotating brush. Also, there is no possibility of dust entering the bearing section. Therefore, it is possible to obtain a floor suction device that can be used for a long period of time and is easy to use.

[Brief explanation of drawings]

The drawings all relate to embodiments of the floor suction device of the present invention, and FIG. 1 is a partially sectional plan view, FIG. 2 is a partially sectional view of an enlarged main part, and FIG. 3 is an enlarged part of another important part. FIG. 1... Floor suction tool, 4... Rotating brush, 20.20
... Pivot support shaft, 23.23 ... Flange tube, 28.28
... Bearing part, 30.30 ... Cap body, 32.3
2... Annular edge part.

Claims (2)

[Claims] (1) A rotary brush chamber having a suction port on the lower surface is provided in the main body case, and a connecting cylinder communicating with the rotary brush chamber is rotatably attached to the rear of the main body case, and a rotary drive source is provided in the rotary brush chamber. A rotary brush that is rotatably driven by a rotary brush, comprising: a shaft provided at both ends of the rotary brush; a flange tube provided around both ends of the rotary brush so as to cover the shaft; A floor suction suction unit comprising: a bearing part detachably supported on both side walls of a brush chamber; and a cap body attached to the bearing part and covering the outer circumferential surface of the flange cylinder with a gap therebetween. Ingredients. (2) The floor suction tool according to claim 1, wherein the cap body is made of a metal member, and an annular edge portion is formed at the opening end.