JPS6057846B2 - Vacuum cleaner rotating brush mouthpiece - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a rotating brush suction port for a vacuum cleaner, which has sufficient suction power and is particularly effective not only on carpets but also on floors and tatami mats. This invention relates to a rotating brush suction port suitable for cleaning.

[Conventional technology]

Conventional rotating brush suction ports were designed primarily for cleaning carpets, and the goal was to maximize the dirt scraping effect of the rotating brush body.

Therefore, with this rotating brush suction, bare. When cleaning floors and tatami surfaces, there are various problems, and the disadvantage is that you cannot get a satisfactory result compared to a general floor or wall suction spout. This was one of the reasons why rotating brush mouthpieces did not become popular in Japan, where there is a wide variety of smokers. The main drawbacks are that the rotating brush body that rotates at high speed scratches the floor surface, and because the opening area of the suction port to expose the rotating brush body is large, the wind speed at the suction port does not increase and the In addition to weakening the suction force, the floor
There was no means to effectively sweep the tatami surface and collect the dust, and instead the rotating brush body was sometimes used to blow away sand and dirt. This is simply a matter of making the floor brush go in and out in a device equipped with a rotating brush. [Problems to be solved by the invention] Therefore, in order to eliminate the above-mentioned drawbacks, the present invention provides an unnecessary rotating brush for floors and tatami surfaces. At the same time as the rotation of the body is stopped, a fixed floor brush that sweeps the floor and tatami surface is brought out from the bottom of the mouthpiece body.
This allows for effective cleaning even on floors and tatami mats.

That is, the purpose of the present invention is not only for carpets, but also for carpets.
This rotary bra suction mouth can exhibit a cleaning effect comparable to that of a general floor suction mouth even on floors and tatami surfaces, and is easy to handle.

[Means to solve the problem]

In order to achieve the above object, the present invention includes a rotatable rotating brush body provided in a suction body, a drive source for driving the rotary brush, a suction port formed on the lower surface of the suction body, and a suction port formed on the lower surface of the suction body. A floor brush body configured to be freely retractable and retractable from the lower surface of the rotary brush, and a switching means for controlling operation stoppage of the drive source, with the outer periphery of the rotary brush facing the suction port, in which the floor brush body can be moved in and out. is performed by a switching lever and an operating lever, and a drive switch lever for the electric motor is integrally disposed on the switching lever, and in connection with the rotation and stopping of the rotating brush body, the floor brush body is moved to the suction of the suction body. It is configured to enter and exit from the mouth, and can be used not only for carpets, but also for floors and tatami mats with the touch of a switch.

〔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 includes an electric motor 8, a rotating brush body 13,
A suction port 34 and an auxiliary suction port 35 are opened at the front part of the lower surface, and the rear part is connected to these suction ports through the duct 50, and the main body 1 is rotatable in the front-rear direction. A connecting pipe 5 that can be freely connected is installed.

The connecting pipe 5 is configured to be directly connected 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 suction mouth 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 positions behind the suction port 34, respectively, at symmetrical positions. Furthermore, a floor brush body 57 is provided behind the suction port 34 on the lower surface of the suction body 1 . The brush part 85 of the floor brush body 57 is rotated approximately 90 degrees backward in the floor brush storage part 59 by operating the switching lever 69 provided on the top surface of the suction body 1, and the brush part 85 is rotated backward by about 90 degrees in the floor brush storage part 59, and the brush part 85 is rotated backward by about 90 degrees in the floor brush storage part 59, and the brush part 85 is arranged in a straight line on the bottom surface. 86 and store it from the bottom to the rear. 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 and a part of the front and rear sides of the side surfaces, and a joint cover that covers the attachment part of the connecting pipe 5 on the lower surface. The lower case 3 and the 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 into the upper case 2 and lower case 3 by combining the joint cover 4.
The electric motor 8 is held within a motor support wall 10 within the mouthpiece body 1 via vibration-proof rubbers 9a and 9b, and a small pulley 12 is screwed onto the tip of a rotating shaft 11.

The rotating brush body 13 includes a main brush body 14 and an auxiliary brush 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 via a belt 17. In this embodiment, the 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 arranged in a spiral manner, and a hard striking ridge 20 which also projects in a spiral manner on the surface of the main brush body 14. 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 through a washer 21.
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 ribs 29a, 29b of the suction mouth main body 1 via the anti-vibration cover 28. The large pulley part 16 side end of the main brush shaft 18 is
It is supported by a flat bearing 30 made of oil-impregnated alloy or the like, and this flat bearing 30 is held in a holding case 32 of the mouthpiece body 1 via a bearing cover 31. The main brush body 14 and the auxiliary brush body 15 of the rotating brush body 13 are separated from the other interior parts of the suction body 1 by a partition wall 33, and are connected to the suction port 34 and the auxiliary suction port 35, and have a rotating brush chamber 36 located above. The rotating brush chamber 36 is located within the auxiliary brush chamber 37, and the rotating brush chamber 36 is located within the main brush body 1.
The belt chamber 39 is substantially separated from the belt chamber 39 by a side wall 38 through which the belt 4 passes. Rotating brush chamber 36 and auxiliary brush chamber 37
are connected by a communication path 40 at the rear of the holding rib 29a. A dirt introduction groove 160 is provided on the side edge of the suction port 34 and is recessed from the front lower surface of the suction port body, such as the front edge of the suction port. The bottom surface of the suction body between the suction port 34 and the auxiliary suction port 35 is a concave bridge portion 161 similar to the dust introduction groove 160. 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 may be accidentally removed from the rotating brush chamber 3 through the suction port 34.
It is made of a flexible elastic body so as not to be injured by being pinched between the striking ridge 20 of the rotating rotating brush body 13 and the rear edge 42 of the suction port when the finger is inserted into the rotating brush body 13. The flexible plate 44 is
A thin plate-shaped tongue with a highly flexible tip is attached to the front side of the suction port 34, that is, the bottom surface of the frontmost part of the mouthpiece body 1 so as to protrude downward, and several solid pieces are attached to the slight gap 45. They are arranged at equal intervals 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, ensuring a sufficient amount of air, reducing the wind speed, and reducing the amount of air generated at the suction port. If it is small, it does not bend much and keeps the gap G with the floor small, or it contacts the floor and passes through the gap 45 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 of the lower case 3 of the mouthpiece main body 1 so as to maintain gaps 45, and only their tips are inserted into the lower surface of the lower case 3 through a plurality of slits corresponding to the number of flexible plates. It comes out more. The plurality of flexible plates 44 are held at the same time and held by a holding plate fixed to the lower case 3 with screws. In addition, multiple gaps 45
The total width of the suction port 34 is set between 2% and 5% of the width of the suction port 34. The duct 50 is an auxiliary brush chamber of the rotating brush chamber 36.
It is a vibrator with a cylindrical cross section that connects an inlet 51 provided near 37 and a suction port 52 of a connecting pipe 5 rotatably provided at the rear of the suction body 1, and both ends are connected to the partition wall 33 and the connecting pipe holder, respectively. It's touching the wall.

In one embodiment of the present invention, as shown in FIGS. 1 to 5, the floor brush body 57 has a brush portion 58 installed in a floor brush storage section 59 consisting of a brush cover and a brush wall of the lower case 3. The shaft portions 60 and 61 at both ends are rotatably supported by bearing portions of the floor brush storage portion 59.

The floor brush storage section 59 is provided with a bottom plate bridge for reinforcement at approximately the center thereof. The switching lever 69 is rotatably supported by a lever bearing 72, which is provided on a lever partition provided on the mouthpiece body and surrounding the switching lever part, around lever shafts 70 and 71 on both sides. is exposed to the outside from the upper surface of the mouthpiece body 1 through the pedal outlet hole 162. A spring holding hole passes through the center of the lever shaft 71, and a substantially L-shaped switch lever 78 is integrally provided at the tip of one lever shaft 70.

A brush operating lever 79 is formed integrally with the pedal section 74 approximately at the center of the lower surface of the switching lever 69, and has a sliding elongated hole 80 at its tip. The sliding long hole is the floor brush body 57
The width is slightly larger than the diameter of the sliding shaft 67, and the sliding shaft 67 is fitted into this width. When the pedal portion 74 is operated, the sliding shaft 67 reciprocates in the sliding elongated hole 80. Lever spring 8
1 is a torsion coil spring having a substantially annular end 82 at one end and an L-shaped end 83 at the other end. This approximately annular end portion 82 is fitted into the outer periphery of the spring hanging shaft 68 of the floor brush body having a retaining protrusion 84, and the tip of the L-shaped end portion 83 is inserted into the spring holding hole 77 in the lever shaft 71 of the switching lever. between the switching lever 69 and the floor brush body 57, the lever spring 81 slides the arm 66 of the floor brush body into the elongated hole 8.
It generates an urging force that presses it downward. Both ends of the lever spring 81 are rotatable around the spring hanging shaft 68 and the spring holding hole 77, respectively. In this way, the floor brush body 57,
Since the switching lever 69 and the lever spring 81 are configured, first, as shown in FIGS. 4 and 5, when the first row/folding side J75 of the pedal part 74 is down, the brush operating lever 79 is directed downward. The arm 66 of the floor brush body 57 that fits into the long sliding hole 80 with its sliding shaft 67 is in a substantially horizontal state, and the brush part 85 connected thereto is held downward and the floor planted on the brush part 85 is held downward. The brush 86 is made to protrude downward from the lower surface of the mouthpiece body 1. And this floor brush 8
When cleaning floors and tatami mats, 6 comes into contact with the surface to be cleaned, sweeps it, collects dirt, and scrapes off stuck dirt. Next, from the state shown in Figure 4, turn to the pedal section 1.
When the carpet side J76 is pushed down, the brush operating lever 79 rotates forward and upward about the lever shafts 70 and 71. (Arrow S in Figure 4) Along with this, the sliding shaft 67 slides relatively upward in the sliding elongated hole 80 while compressing the opening at both ends against the biasing force of the lever spring 81. An arm 66 connected to the shaft portion 61 rotates upward around the shaft portion 61. (T arrow in FIG. 4) As the arm rotates, the integrated brush portion 85 rotates backward around the shaft portions 60 and 61. Then, at approximately the midpoint of the switching operation from the 1st seat/folding side J75 to the 1st seat side 76 of the pedal section, the sliding shaft 67 reaches the uppermost position in the sliding slot 80 (the fourth phase image line). As the brush actuating lever 79 further rotates forward and upward, the arm 66 rotates further forward while returning downward through the sliding elongated hole 80. At this time, the lever spring 81 is in the direction of widening the opening at both ends, and works to promote the movement of the sliding shaft 67 and the brush actuating lever 79. In other words, at approximately the midpoint of switching the pedal section, the lever spring 81 crosses the dead center, and imparts adjustment to the switching of the pedal section 74. Finally, the 1st side of the pedal part J
When the 76 falls down, it becomes the state shown in Fig. 5, the sliding shaft 67 returns to the bottom of the sliding elongated hole 80, the arm 66 stands up, and the brush part 85 connected to it is turned backward and sideways 90. held in a rotated position. Therefore, the floor brush 8
6 faces rearward and is stored in the floor brush storage section 59,
It is pulled in from the bottom surface of the mouthpiece body 1. Therefore, when the floor brush 86 cleans the carpet, it does not get stuck in the hair of the carpet, making it difficult to clean the suction port and increasing the operating force. In addition, since the side surface of the brush portion 85 is at approximately the same height and on the same plane as the lower surface around the floor brush storage portion of the suction mouth main body 1, a large amount of hair from the carpet 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. On the other hand, the lever shaft 70 of the switching lever 69
The switch lever 78 integrated with the switch lever 78 rotates around the lever shafts 70 and 71 as shown in FIGS. When the microswitch 90 has a normally closed contact at its tip 89, the actuator plate 91 of the microswitch 90 is pressed and the switch button 92 is pressed to open the circuit of the motor 8 as shown in FIG. The rotating brush body 13 is stopped from rotating. This is because when cleaning floors or tatami mats, the main brush 19 and auxiliary brush 27 of the rotating brush body 13 may blow away the dirt on the surface to be cleaned, and the main brush 19 and the beating ridges 27 that rotate at high speed may However, this is because it may damage the floor surface. When the pedal part 74 is tilted to the side 76, the switch lever 78 is separated from the actuator 91, the switch button 92 is returned to the free position, and the microswitch 90 is closed to the circuit of the motor 8. is closed, the electric motor 8 rotates and drives the rotating brush body 13, and the main brush 1
9. The auxiliary brush 27 and the beating ridges 20 work to loosen and stir up the rubber deep within the hair of the carpet. Microswitch 90 is fixed in the switch case. Joint pipe 5
This is a substantially T-shaped vibrator, and has rotating parts 94 and 95 with a cylindrical outer shape extending left and right at the base.

A cylindrical communication pipe 96 is also connected to approximately the center of the rotating parts 94 and 95. The communication pipe 96 is connected to the rotating part 9 through an elbow part formed in the rotating part 95 on one side.
It communicates with the suction port 52 on the 5th end face. There is a sliding collar on the outer periphery of the left and right rotating parts, and these fit into the connecting pipe retaining wall of the mouthpiece body 1, and serve as stoppers on the left and right sides of the connecting pipe, while also moving along the arrows and imaginary lines in Figure 1. As shown in the figure, the connecting pipe 5 can be rotated in the front and rear directions with respect 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 on the connecting pipe holding wall, and slides while maintaining communication with each other as the connecting pipe 5 rotates. The power cord 113 has a plug 114 at its tip, is drawn into the suction body through a bush 115 provided on the rear surface of the suction body 1, and is held by being press-fitted in a meandering manner between a rib and a fixed wall.

This power cord 113 is connected to the lead wires of the motor 8 and the lead wires from the microswitch 90 using crimp terminals. The wheel 122 is attached by fixing the axle 124 to a wheel attachment wall formed by the upper case 2 and the lower case 3.

The same applies to the wheels 123. The electric motor 8 has a self-cooling fan (not shown) inside, which sucks air through an introduction window 150 provided on the front wall of the joint mounting recess, guides it into the inside of the motor through an intake port 151 of the electric motor 8, and cools the air naturally. and pulley 12
It is discharged from the discharge window 152 provided on the side surface of the mouthpiece body 1 through an exhaust port (not shown) on the side surface.

[Operation] When the vacuum cleaner is operated, the airflow containing dirt from the surface to be cleaned enters the suction body 1 through the auxiliary suction port 35 and the rotating brush chamber 36 and the auxiliary brush chamber 37.
, enters the duct 50 through the inlet 51, and enters the duct 5.
0 and reaches the suction port 52 of the connecting pipe 5.

Then, from the suction port 52 to the elbow pipe part of the connecting pipe 5, the communicating pipe 9
6, and is sucked into the connected vacuum cleaner, where it can capture the dirt. Here, when the surface to be cleaned is dirty, the pedal portion 74 of the switching lever 69 is pushed down to the 1st floor side J76. At this time, the switch lever 78 leaves the actuator 91 of the microswitch 90 and the switch lever 78 leaves the actuator 91 of the microswitch 90.
0, the circuit of the electric motor 8 is closed and the electric motor 8 is operated, and the rotating brush body 13 is driven and rotated through the belt 17.
Then, the beating protrusions 20 of the main brush body 14 beat the hair of the carpet to loosen it and lift up the dirt between the hairs, and the main brush 1
9 and the auxiliary brush 27 scrape up dirt between the bristles and perform effective cleaning. At this time, the brush part 85 of the floor brush body 57 rotates backward in conjunction with the switching lever 69, and the floor brush 86 is stored in the floor brush storage part 59.
The floor brush 86 does not dig into the hair of the carpet, making the suction port less slippery and causing excessive operating force. When the surface to be cleaned is a floor or a tatami mat, the pedal portion 74 of the switching lever 69 is moved to the 1-yuka/folding side J75.

At this time, the switch lever 78 pushes the actuator 91 of the microswitch, the microswitch 90 opens the circuit of the motor 8, and the motor 8 is stopped. Therefore, the microswitch body 13 does not rotate, and the dust on the floor and tatami mats is removed.
The main brush 19 and the auxiliary brush 27 of the rotating brush body 13 blow away sand and dirt on the floor and tatami mats, and the cleaning efficiency is not reduced. A main brush 19 that rotates at high speed, a striking protrusion 20,
Scratching is also prevented by the auxiliary brush 27 and the like.

At this time, the brush portion 85 of the floor brush body 57 is
9, the floor brush 86 protrudes downward from the floor brush storage section 59, and as the mouthpiece is operated, it gently sweeps the floor and tatami surface to remove dust attached to the surface. Peel it off and scrape out the dirt hidden in the hollows.
This increases the effectiveness of cleaning. [Effects of the Invention] Since the present invention has the above configuration, it has the following effects.

(B) A rotatable brush body provided in the suction mouth body, a drive source for driving the rotary brush, a suction port formed on the lower surface of the suction mouth body, and a structure configured to freely move in and out of the lower surface of the suction mouth body. The rotating brush body is composed of a floor brush body, and a switching means for controlling the stoppage of the drive source, so that the rotation of the rotary brush body and the movement in and out of the floor brush can be switched with a single touch.
The main brush, auxiliary brush, and beating ridges of the rotating brush body rotate at high speed and do not damage or tear the floor or tatami surface. This prevents dirt from being blown away with the same probability as when it is stirred up, reducing cleaning efficiency. At the same time, the floor brush that protrudes from the bottom of the suction unit softly touches the surface to be cleaned, so The reciprocating movement of the mouthpiece body can scrape out and collect dirt that is scattered or stuck on the floor or tatami mats, or that has gotten into the grain of the boards or tatami mats.

(b) The floor brush body is put in and taken out using a switching lever and an operating lever, and a drive switch lever for the electric motor is integrally disposed on the switching lever, and the floor brush body Since the brush is constructed so that it enters and exits from the suction port of the suction body, the motor circuit can be reliably opened and closed with a simple structure, and the rotating brush body can be stopped and started, and at the same time, the surface to be cleaned can be cleaned by the movement of the suction body. The floor brush can be taken out and taken out accurately, and when cleaning the floor or tatami surface, the rotation of the rotating brush body can be stopped and the floor brush can be taken out.

In addition, by simply attaching the switch lever that operates the switch directly to the switch lever that mechanically moves the floor brush in and out, only the slight increase in force needed to operate the switch button is required to operate the switch lever. This allows the switching lever to operate smoothly, and furthermore, there is no need for a mechanism for stopping and starting the rotating brush other than the switching lever, resulting in a simple structure.

As described above, according to the present invention, not only the carpet but also the floor,
It is possible to obtain a rotating brush suction mouth that can perform practically effective cleaning even on tatami surfaces.

[Brief explanation of the drawing]

Fig. 1 is a partial vertical cross-sectional view of an embodiment of the present invention, Fig. 2 is a partial cross-sectional view showing the storage state of the floor brush, Fig. 3 is an explanatory view showing the relationship of parts of the switching lever portion, and Fig. 4 is a partial cross-sectional view showing the storage state of the floor brush. An explanatory diagram of the floor brush operating mechanism, Figure 5 is an explanatory diagram when the floor brush is stored, and Figure 6 is an explanatory diagram of the floor brush operating mechanism.
The figure is a top view of the rotating brush suction port, FIG. 7 is a bottom view showing the internal structure of the suction port body, and FIG. 8 is a circuit diagram. 1...Suction body, 8...Electric motor, 13
...Rotating brush body, 14...Main brush body, 15...Auxiliary brush body, 34...Suction port, 35...Auxiliary suction port , 57... Floor brush body, 69... Switching lever, 78... Switch lever, 79... Operating lever, 92... Switch button.

Claims (1)

[Claims] 1. A rotary brush body provided in the suction mouth body that can freely rotate, a drive source that drives the rotary brush, a suction port formed on the lower surface of the suction mouth body, and a suction port that can freely move in and out of the lower surface of the suction mouth body. The floor brush body is composed of a floor brush body and a switching means for controlling operation stoppage of the drive source, and the outer periphery of the rotary brush faces the suction port, and the floor brush body is moved in and out by a switching lever and an operating lever. Further, a drive switch lever for the electric motor is integrally disposed on the switching lever, and the floor brush is configured to move in and out from the suction port of the suction body when the rotating brush body stops rotating. A rotating brush suction port for a vacuum cleaner.