JPS6115683B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rotating brush suction port for a vacuum cleaner,
In particular, it relates to a rotating brush suction mouth suitable for cleaning every corner of a room.

[Conventional technology]

In conventional rotating brush suction mouthpieces, the rotating brush body is narrower than the overall width of the mouthpiece, and is located almost in the center, so the brush has less effect of scraping up dirt at the side edges of the mouthpiece, and the dust is spread over the entire room. It was difficult to clean and remove the dirt and lint that had accumulated along the edge of the carpet wall. Therefore, in a device that cleans the wall edge area by installing auxiliary brushes at both ends of the main rotating brush (Japanese Patent Application Laid-Open No. 50-85144), the inlet is placed closer to the auxiliary brush side, but the inlet of the main rotating brush chamber is Since the mouth and the auxiliary brush chamber are separated, the suction efficiency is low. In addition, an auxiliary brush body is provided on the outside of the main brush body bearing of the rotating brush body, and the auxiliary brush is positioned all the way to the end of the suction side, so that the effect of scraping up dirt at the side end can be demonstrated. −
No. 29464), the auxiliary brush chamber that houses the auxiliary brush body and the auxiliary suction port that is the opening of this chamber are separated from the rotating brush chamber that houses the main brush body and the suction port that is the opening of this chamber by a bearing such as a ball bearing. Therefore, the rotating brush chamber and the auxiliary brush chamber are connected by a communication path, but the airflow generated by the vacuum cleaner connected to the suction port is mainly concentrated at the suction port and is separated by the narrow communication path. There is little airflow flowing through the auxiliary brush chamber and the auxiliary suction port, and the dirt that has been stirred up by the auxiliary brush is not carried to the rotating brush chamber by the airflow, but accumulates in the auxiliary brush chamber and falls onto the carpet again. Otherwise, it accumulates in the narrow communication passage, further reducing the airflow from this area, and eventually clogs the communication passage or gets entangled with the auxiliary brush body, causing problems such as impeding rotation. .

[Problem that the invention seeks to solve]

Therefore, in order to eliminate the above-mentioned drawbacks, the present invention effectively demonstrates the ability to scrape up dirt at the side end of the mouthpiece body, and allows the scraped up dirt to smoothly flow and be sucked up without accumulating inside the mouthpiece body. To provide a rotating brush suction mouth capable of thoroughly cleaning up to the walls of a room.

In the present invention, the inlet of the duct that connects the rotating brush chamber and the connecting pipe is placed closer to the auxiliary brush body than the center of the suction body, increasing the airflow flowing from the auxiliary suction port, and causing dirt to accumulate in the auxiliary brush chamber and the communication path. The purpose of this invention is to provide a rotating brush suction port that prevents

[Means for solving problems]

In order to achieve the above object, the present invention provides a vacuum cleaner including a rotating brush chamber for housing a rotating brush body in a suction main body, and the rotating brush body is composed of a main brush body in the center and auxiliary brush bodies on the sides. In the rotating brush suction port, a duct communicating between the rotating brush chamber and a connecting pipe connected to the vacuum cleaner main body is formed in the suction main body, and an inlet on the rotating brush chamber side of the duct is connected to the side of the suction main body. It is characterized by the fact that it is located closer to the auxiliary brush body provided on the side.
This further improves the effect of scraping up dirt at the end on the suction side.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings. Reference numeral 1 denotes a suction main body, which is equipped with an electric motor 8, a rotating brush body 13, a duct 50, etc. inside, and has a suction port 34 and an auxiliary suction port 35 at the front of the lower surface, and at the rear.
A connecting pipe 5 is installed which communicates with these suction ports through a duct 50 and is rotatably connected to the main body 1 in the front-rear direction. The connecting pipe 5 is connected directly to the vacuum cleaner main body by a clamp portion or to an extension pipe (not shown) continuous to the vacuum cleaner main body. Further, on the lower surface of the mouthpiece main body 1, a pair of wheels 122, 123 are provided at the rear, and a pair of small wheels 126, 127 are provided at a position behind the suction port 34, respectively, at left-right symmetrical positions. Furthermore, a floor brush body 57 is provided on the lower surface of the suction body 1 behind the suction port 34. The brush portion 85 of the floor brush body 57 is rotated approximately 90 degrees rearward within the floor brush storage portion 59 by operating the switching lever 69 provided on the top surface of the suction body 1, and the brush portion 85 is rotated backward by approximately 90 degrees within the floor brush storage portion 59, and the brush portion 85 is rotated approximately 90 degrees backward in the floor brush storage portion 59, and the brush portion 85 is rotated approximately 90 degrees backward in the floor brush storage portion 59 by operating the switching lever 69 provided on the top surface of the mouthpiece body 1. Store the 86 facing down and backwards. A flexible plate 44, which will be described later, is installed on the front lower surface of the suction port 34.

The mouthpiece body 1 includes an upper case 2 that constitutes the upper surface, side surfaces, and front and rear surfaces, a lower case 3 that constitutes the main part of the lower surface, the side surfaces, and a part of the front and rear surfaces, and a joint that covers the attachment part of the connecting pipe 5 on the lower surface. It consists of a cover 4, and a lower case 3 and a joint cover 4 are each fixed to the upper case 2 with a plurality of screws. Built-in parts such as the electric motor 8, rotating brush body 13, and duct 50 in the mouthpiece body 1 are held by being inserted between the upper case 2, the lower case 3, and the joint cover 4 in combination.

The electric motor 8 is held within a motor support wall 10 within the mouthpiece body 1 via vibration-proofing rubbers 9a and 9b.
A small pulley 12 is screwed onto the tip of the rotating shaft 11. The rotating brush body 13 consists of a main brush body 14 and an auxiliary brush body 15. A large pulley portion 16 is formed at one end of the main brush body 14, and power is transmitted from the small pulley 12 of the electric motor 8 by a belt 17. be done. In this example, the main brush body 14 and the large pulley portion 16 are made of resin molded on the brush body shaft 18 by secondary molding. The main brush body 14 includes a main brush 19 planted in a spiral shape, and a hard tapping ridge 20 that also projects in a spiral shape on the surface of the main brush body 14.
It is equipped with At the other end of the main brush body 14, an integral brush body shaft 18 extending through the main brush body 14 projects long, and a ball bearing 22 is press-fitted therein via a washer 21. Furthermore, a stepped portion 23 and a left-hand threaded portion 24 are provided at the tip of the brush body shaft 18 that protrudes from the bearing (ball bearing) 22, and the washer 2 is engaged with the stepped portion 23.
5, the auxiliary brush body 15 is tightened and fixed by a left nut 26 screwed onto the left threaded portion 24.
Auxiliary brushes 27 are installed at several locations on the outer circumference of the auxiliary brush body 15. The ball bearing 22 is covered with a rubber anti-vibration cover 28, and is held by the holding rib 29a provided on the upper case 2 and the holding rib 29b provided on the lower case 3 of the suction body 1 via the anti-vibration cover 28. ing. The end of the brush body shaft 18 on the side of the large pulley portion 16 is supported by a flat bearing made of oil-impregnated alloy or the like, and this flat bearing is held within the holding case 32 of the mouthpiece body 1 via a bearing cover. Main brush body 14 of rotating brush body 13
The auxiliary brush body 15 is connected to the mouthpiece body 1 by the partition wall 33.
Separated from other internal parts, suction port 34 and auxiliary suction port 3
The rotating brush chamber 36 and the auxiliary brush chamber 37 are connected to the rotary brush chamber 36 and the auxiliary brush chamber 37 are located at the upper part of the rotary brush chamber 3
6 is a side wall through which the main brush body 14 passes;
It is almost separated from the belt chamber. Rotating brush room 3
6 and the auxiliary brush chamber 37 are connected through a communication path 40 at the rear of the holding rib 29a.

The side edge 159 of the suction port 34 has a suction port front edge 46.
Dust introduction groove 1 recessed from the front lower surface of the mouthpiece body, etc.
60 are provided.

The bottom surface of the suction body between the suction port 34 and the auxiliary suction port 35 has a concave bridge portion 16 similar to the dirt introduction groove 160.
1.

During suction, the dust scraped up by the auxiliary brush 15 is sucked into the duct from the communication path 40 and at the same time passes through the bottom of the bridge section 161 from the main suction port 34 to the duct 50.
lead to.

The protection plate 41 is attached to the lower surface of the mouthpiece body so as to form the rear edge of the suction port 34, and is configured to substantially cover the rear part of the large suction port 34. The protection plate 41 is designed to prevent a person from getting injured if he or she accidentally inserts his/her finger into the rotating brush chamber 36 from the suction port 34 by being caught between the striking ridge 20 of the rotating rotating brush body 13 and the rear edge 42 of the suction port. , made of a flexible elastic body.

The flexible plate 44 is a highly flexible thin plate-shaped tongue piece attached to the front side of the suction port 34, that is, the lowermost front surface of the mouthpiece body 1 so as to protrude downward, and is made of several pieces of the same shape. are arranged at equal intervals with slight gaps 45 in between, and approximately the full width of the suction port 34.
This flexible plate 44 comes into contact with the floor when the suction main body 1 is placed on the floor, and the flexible plate 44 directs the airflow flowing from the front into the suction port 34 through the gap between the suction port front edge 46 and the floor. It functions to adjust the wind speed at the suction port 34 by controlling the wind speed. When the amount of air generated at the suction port 34 is large, it is greatly bent and lifted upward by the wind pressure, creating a gap G between it and the floor surface 158 (arrows in FIG. 5 represent airflow) to ensure the amount of air. By relaxing the wind speed and not bending much when the amount of air generated at the suction port is small, the gap G with the floor surface 158 is reduced.
Keep the gap small or contact the floor to close the gap 4.
5 to increase the wind speed. Therefore, the suction force related to the wind speed is averaged both when the air volume is high and when the air volume is low, thereby preventing a decrease in the suction power, especially when the air volume is low.
The flexible plates 44 are inserted into the front end corners 43 of the lower case 3 of the mouthpiece main body 1 so as to maintain a gap 45, respectively.
Only the tip ends thereof come out from the lower surface of the lower case 3 through a plurality of slits 47 corresponding to the number of flexible plates. The plurality of flexible plates 44 are simultaneously held and held by a holding plate 49 fixed to the lower case 3 with screws. Note that the total width of the plurality of gaps 45 is set between 2% and 5% of the width of the suction port 34.

Next, the duct will be explained in detail.

The duct 50 is a pipe with a cylindrical cross section that connects an inlet 51 provided near the auxiliary brush chamber 37 of the rotating brush chamber 36 and an inlet 52 of a connecting pipe 5 rotatably provided at the rear of the suction body 1. Both end portions are in contact with the partition wall 33 and the connecting tube holding wall, respectively. The duct 50 is formed by overlapping an upper half piece with a semi-cylindrical cross section and a matching lower half piece with a symmetrical shape, and is held as a pipe by the upper case 2 and the lower case 3. A duct 50 is shown in phantom in FIG.

The joint pipe 5 is a substantially T-shaped pipe, and has rotating parts 94 and 95 with a cylindrical outer shape extending left and right at the root part.
have. A cylindrical communication pipe 96 is also connected to approximately the center of the rotating parts 94 and 95. The communication pipe 96 communicates with the suction port 52 on the end surface of the rotating part 95 through an elbow pipe formed in the rotating part 95 on one side. As shown by arrows and imaginary lines in FIG. 2, the connecting pipe 5 can be rotated in the front-rear direction relative to the mouthpiece body 1. The end face of the rotating part 95 on the suction port 52 side is in contact with the end face of the duct 50, and slides while maintaining communication with each other as the connecting pipe 5 rotates. The articulation protrusion 101 is provided on the end face of one of the rotating parts 94, and when the connecting tube 5 rotates, it pushes over the protrusion of the articulation leaf spring and climbs over it.
Prevents the connecting pipe from falling.

Stoppers 106 and 107 project from the left and right sides of the communication pipe 96, and contact step portions 108 and 109 on the left and right walls of the joint mounting recess 104 to assist in regulating the downward rotation of the joint pipe.

Reference numeral 110 denotes a clamp portion provided on the outer surface of the communication pipe 96, from which a button 112 biased by a clamp spring 111 protrudes and retracts.

The brush part 85 of the floor brush body 57 is installed in the floor brush storage part 59 constituted by the brush wall of the lower case 3 of the brush cover 58, and the shaft parts at both ends are
It is rotatably supported by a bearing section of the floor brush storage section 59. The floor brush storage section 59 is provided with a bottom plate bridge 64 for reinforcement at approximately the center thereof. The switching lever 69 is rotatably supported around lever shafts on both sides by lever bearings provided on a lever partition provided on the suction mouth body and surrounding the switching lever portion.
The pedal portion 74 is exposed to the outside from the upper surface of the mouthpiece body 1 through the pedal outlet hole 162.

By operating the pedal portion 74, the sliding shaft reciprocates in the sliding slot. Since it is composed of the floor brush body 57, the switching lever 69, and the lever spring, when the "yuka/folding side" 75 of the pedal section 74 is down, the floor brush 86 installed in the brush section 85 is turned downward. It is made to protrude from the bottom surface of the mouthpiece body 1. When the floor brush 86 cleans the floor or tatami mat, it comes into contact with the surface to be cleaned and sweeps it, collecting dirt and scraping off stuck dirt. Next, press the "Jiyu-tan side" 76 of the pedal section and push it down, and the "Yuka/Fatatami side" of the pedal section will move.
Approximately at the midpoint of the switching operation from 75 to the "sitting side" 76, the lever spring crosses the dead center, giving an adjustment to the switching of the pedal section 74. When the "Jiyutan side" 76 of the pedal section finally falls down,
The brush portion 85 connected thereto is held at a position rotated a little more than 90 degrees rearward and laterally. Therefore, the floor brush 86 faces rearward, is stored in the floor brush storage section 59, and is pulled in from the lower surface of the suction body 1. Therefore, when the floor brush 86 cleans the carpet, it does not bite into the hair of the carpet, making the suction port difficult to slip, and increasing the operating force. In addition, since the side surface of the brush portion 85 is approximately at the same height and flush with the lower surface around the floor brush storage portion of the suction mouth main body 1, a large amount of carpet hair enters into the floor brush storage portion 59, and substantially This also prevents the main body from sinking into the carpet and increasing the operating force.

The power cord 113 has a plug 114 at its tip, and a bush 115 provided on the rear surface of the mouthpiece body 1.
It is drawn into the mouthpiece body through the pipe and is held by being press-fitted between the rib and the fixed wall. This power cord 113 is connected to the lead wires of the motor 8 and the lead wires from the microswitch using crimp terminals.

The wheel 122 is attached by fixing the axle 124 to a wheel attachment wall 125 formed by the upper case 2 and the lower case 3. The same applies to the wheels 123.

The small wheels 126 are rotatably mounted around an axle 129 within a wheel cover integrally molded with the lower case 3 made of resin.

[Effect]

To clean with the rotating brush suction port constructed as described above, the power cord 113 is connected as shown in FIG.
For example, the plug 114 is connected to a power source provided in the vacuum cleaner body 153, and the joint pipe 5 is connected directly to the vacuum cleaner body using its clamp portion or to an extension pipe (not shown) communicating with the vacuum cleaner body. . When the vacuum cleaner is operated, the airflow containing dust from the surface to be cleaned enters the suction port 1 through the suction port 34 and the auxiliary suction port 35, passes through the rotating brush chamber 36, the auxiliary brush chamber 37, and then enters the inlet 51. It enters the duct 50, passes through the duct 50, and reaches the suction port 52 of the connecting pipe 5. Then, the dust passes through the inlet 52, the elbow part of the connecting pipe 5, and the communication pipe 96, is sucked into the connected vacuum cleaner, and can be captured. Here, when the surface to be cleaned is a carpet, the pedal portion 74 of the switching lever 69 is turned to the "clothing side" 76. At this time,
The switch lever leaves the actuator of the micro switch, the micro switch closes the circuit of the motor 8, the motor 8 is operated, and the rotating brush body 13
is driven and rotated through a belt 17. The striking protrusions 20 of the main brush body 14 beat and loosen the hair of the carpet, and the dirt between the hairs floats up, and the main brush 19 and the auxiliary brush 27 stir up the dirt between the hairs, resulting in effective cleaning. I do. At this time, the brush part 58 of the floor brush body 57 rotates backward in conjunction with the switching lever 69, and since the floor brush 86 is stored in the floor brush storage part 59, the floor brush 86 bites into the hair of the carpet. It will not become crowded, make the suction mouth slippery, and require excessive operating force. When the surface to be cleaned is a tatami floor, the "yuka/tatami side" 75 of the pedal portion 74 of the switching lever 69 is pushed down. At this time, the switch lever pushes the actuator of the microswitch, the microswitch opens the circuit of the motor 8, and the motor 8 is stopped. Therefore, the rotating brush body 13 does not rotate, and the dust on the floor and tatami mats is cleaned only by the suction force of the airflow, and the main brush 19 and the auxiliary brush 27 of the rotary brush body 13 clean the dust and dirt on the floor and tatami mats. It does not reduce cleaning efficiency by blowing away particles, etc.
Furthermore, scratches on the floor surface are also prevented by the main brush 19, the striking protrusion 20, the auxiliary brush 27, etc., which rotate at high speed. At this time, the brush part 85 of the floor brush body 57 is rotated downward in conjunction with the switching lever 69, and the floor brush 86 is moved to the floor brush storage part 59.
It protrudes downward from the mouth, and as the mouthpiece is operated,
Sweep floors and tatami surfaces gently to remove dirt adhering to the surface and scrape out dirt hidden in depressions to increase cleaning effectiveness.

〔Effect of the invention〕

Since the present invention has the above configuration, the following effects can be expected.

(a) A rotating brush chamber for accommodating a rotating brush body is provided in the suction main body, and the rotating brush body is composed of a main brush body in the center and auxiliary brush bodies on the sides.
The auxiliary brush body can be brought all the way to the end of the suction body, and dirt is scraped up from the carpet even at the side end, so the auxiliary brush can thoroughly remove dirt that has accumulated in the corners of the room and along the walls. Can be removed.

(b) A duct communicating between the rotating brush chamber and a connecting pipe connected to the vacuum cleaner body is formed in the suction body, and an inlet of the duct on the rotating brush chamber side is provided on the side of the suction body. Since it is installed near the auxiliary brush body, the dirt that enters from the auxiliary suction port is forcibly sucked into the duct inlet of the rotating brush chamber, and does not accumulate in the middle, and there is no need to provide a special duct for the auxiliary brush chamber. The structure is simple and can be manufactured at low cost.

[Brief explanation of the drawing]

FIG. 1 is a bottom view showing one embodiment of the present invention, and FIG.
The figure is a vertical sectional view of the same, Figure 3 is the same rotating brush body, the 4th
The figure is a top view of the same, and FIG. 5 is a partially enlarged diagram illustrating the operation of the flexible plate. 1...Suction body, 2...Upper case, 3...Lower case, 5...Connecting pipe, 8...Electric motor, 14...Main rotating brush, 15...Auxiliary rotating brush, 16...
Large pulley, 17... Belt, 18... Brush body shaft, 19... Brush, 22... Bearing section, 27...
Auxiliary brush, 29a...holding rib, 29b...holding rib, 33...partition wall, 34...suction port, 35...
... Auxiliary suction port, 40 ... Communication path, 50 ... Duct, 51 ... Inlet, 161 ... Bridge portion.

Claims (1)

[Claims] 1. In a rotating brush suction mouth of a vacuum cleaner, the mouthpiece body includes a rotating brush chamber that accommodates a rotating brush body, and the rotary brush body is composed of a main brush body in the center and auxiliary brush bodies on the sides. A duct is formed in the suction body for communicating between the duct and a connecting pipe connected to the vacuum cleaner body, and the inlet of the duct on the rotating brush chamber side is provided near the auxiliary brush body provided on the side of the suction body. A rotating brush suction mouthpiece for a vacuum cleaner.