JPS6032457B2 - Vacuum cleaner floor mouthpiece - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rotating brush mouthpiece for a vacuum cleaner, and more particularly to an improvement of a rotary brush mouthpiece suitable for cleaning every corner of a room.

[Conventional technology]

In conventional rotating brush suction ports, the rotating brush body is shorter than the sub-portion of the entire suction port, and is located almost in the center, so the brush has a strong effect of lifting dust at both ends of the suction port, which can fill the room. It was impossible to clean the area along the walls of the scales, except for the garbage that had accumulated and the lint that had become tangled.

This drawback was a major reason why the rotating brush suction mouth did not become popular, especially in Japan, where rooms are small and the ability to thoroughly clean every corner is required. This drawback is mainly due to the fact that the bearings of the rotating brush body are located at both ends of the brush body. In addition, as described in Jitseki Sho 50-29464, there are devices equipped with an auxiliary rotating brush, but in general, it is difficult to connect the auxiliary suction port and the main suction port due to the bearing part. There was a drawback that suction from the air did not work well.

[Problem that the invention seeks to solve]

SUMMARY OF THE INVENTION In order to eliminate the above-mentioned drawbacks, the present invention provides a rotary brush suction mouthpiece for the floor of a vacuum cleaner, which is capable of thoroughly cleaning up to the walls of a room by effectively exerting its ability to remove dust at the side ends of the suction mouthpiece. .

In the present invention, the auxiliary rotating brush body is attached to the rotating main rotating brush body, and the bearing part of the brush body is installed between the main brush body and the auxiliary brush body, so that the auxiliary brush body is completely extended to the side end of the suction port. A suction port for the main rotating brush and an auxiliary suction port for the auxiliary rotating brush are separately provided on the bottom of the lower case. A bridging portion is provided on the bottom surface of the lower case between the two, and a holding rib is provided on the bridging portion to hold the bearing from both sides of the upper case and the lower case, and the downstream side of the suction port for the main rotating brush and the downstream side of the auxiliary suction port are provided on the bridging portion. The sides are shaped like a lotus, so that the effect of scraping up trash can be achieved at the side edges.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a lower case in which a floor suction port is formed;
A main rotating brush body provided in a casing constituted by an upper case covering the upper part and rotated by a drive source, the end of the main rotating brush being supported by a bearing, wherein the end of the main rotating brush is An auxiliary rotating brush is provided outside the bearing, and a suction port for the main rotating brush and an auxiliary suction port for the auxiliary rotating brush are separately provided on the bottom surface of the lower case, and the suction port for the main rotating brush is provided separately. A bridging portion is provided on the bottom of the lower case between the auxiliary suction port of the auxiliary rotating brush, and a holding rib is provided on the bridging portion to hold the bearing from both sides of the upper case and the lower case. The downstream side of the mouth and the downstream side of the auxiliary suction port are designed to be flush with each other, and the effect of scraping up dirt can be exerted even at the side end of the suction port.

[Embodiments] Hereinafter, embodiments of the present invention will be explained in detail with reference to the drawings.

The military has an electric motor 8 "rotating brush body turtle 3" inside the mouthpiece body.
A suction port 34 and an auxiliary suction port 35 are opened at the front of the lower surface and a duct 50 is opened at the rear. A connecting pipe 5 is installed which is rotatably connected to the main body of the vacuum cleaner.The connecting pipe 5 can be connected directly to the main body of the vacuum cleaner through a clamp part, or may be connected to an extension pipe (not shown) continuous to the main body of the vacuum cleaner.
It is now connected to. On the lower surface of the suction body turtle, there are a pair of small wheels, Ryumaizuru Den 2, and 2 Rai at the rear of the suction port 84, each in a symmetrical position. A floor brush body is provided behind the suction port 34 on the bottom surface of the main body. The brush storage part 9 is rotated backward about 90 degrees to store the floor brush crab 6 planted in a straight line on the lower surface facing downward and backward. On the lower surface in front of the suction port 34 is an adjustable plate which will be explained later. 44 is installed.The mouthpiece main 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 connecting pipe on the lower surface. The lower case 3 and the joint cover 4 are fixed to the upper case 2 with a plurality of screws 6a to 6g, 7a and 7b, respectively.

Electric motor 8 in the mouthpiece body 1, rotating brush body 13, duct 5
Built-in parts such as 0 and the like are held by sandwiching the upper case 2, the lower case 3, and the joint cover 4 by roughly fitting them together.
The electric motor 8 is held within a motor support wall 10 within the mouthpiece body 1 via vibration-proofing 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 turtle 4 and an auxiliary brush body 15.
A large pulley portion 16 is formed at one end of the main brush body 13, and power is transmitted from the small pulley 2 of the electric motor 8 through the belt hole. In this example, the main brush body turtle 4, the large pulley member 6, and the brush body shaft 8 are made of resin molded by secondary molding. The main brush body turtle 4 is provided with a main brush electric current 9 which is provided in a spiral shape, and a hard striking ridge 20 which also projects in a spiral shape on the surface of the main brush body 14. At the other end of the nose of the main brush body, a long integral brush body shaft 88 that penetrates through the main brush body 14 protrudes, and a ball bearing 22 is inserted through two washers.
Furthermore, the brush body shaft that protrudes from this bearing (ball bearing) 22 is also provided with a stepped part 2 and a left-hand threaded part 24 at the tip of the shaft. The brush body turtle S is fixed by tightening the left nut screwed onto the left threaded portion 24 using a No. 6 nut. The bearing 2 is covered with a rubber anti-vibration cover, and through this anti-vibration cover, the holding ribs provided on the upper case of the mouthpiece body and the holding ribs provided on the lower case 3 are attached. The brush body shaft is also supported by a flat bearing made of an oil-impregnated alloy at the end of the large pulley and electric column, and this flat bearing is connected to the holding case of the mouthpiece body via the bearing cover. The rotating brush body head 3 is separated from the other interior parts of the suction body by a partition wall 33 between the main brush body body and the auxiliary brush body body.
The rotating brush chamber 36 and the auxiliary brush chamber 37 are located at the upper part of the 4 and auxiliary suction ports 35, and the rotating brush chamber 36 is almost separated from the belt chamber by the side wall through which the main brush body 14 passes. cut off. The rotating brush chamber 36 and the auxiliary brush chamber 37 are connected to each other through four passageways behind the holding rib 29a. The side edge 159 of the suction port 34 is provided with a dirt introduction groove 160 that is recessed from the lower surface of the front of the suction port body such as the green portion 46 in front of the suction port.

The bottom surface of the suction body between the suction port 34 and the Tachibana Isao suction port 35 is a concave bridge portion 161 similar to the dirt introduction groove 160.

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

The protection plate 41 is attached to the lower surface of the suction port body so as to constitute the rear edge of the suction port 34, and is substantially the same as the large suction port 34.
It is constructed so as to cover the rear part of 4.

The protection plate 41 may be accidentally inserted into the rotating brush chamber 3 from the suction port 34.
It is made of a flexible elastic body so that when a finger is inserted into the rotating brush body 6, it will not be pinched between the striking ridge 20 of the rotating rotating brush body 13 and the rear edge 42 of the suction port and be injured. The plank board 44 is
It is a thin plate-shaped tongue piece with a highly visible and visible tip that 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. They are arranged at equal intervals, almost spanning the entire width of the suction port 34.

This flexible plate 44 comes into contact with the floor surface when the suction port body 1 is placed on the floor surface, and prevents the airflow flowing into the suction port 34 from the front through the gap between the suction port front edge 46 and the floor surface. 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, the airflow is greatly manipulated by the wind pressure and is lifted upward to create a gap G between it and the floor surface 158 (arrows in Figure 5 represent airflow) to reduce the amount of air. If the amount of air generated at the suction port is small, the airflow speed is reduced by keeping the gap G with the floor stove 58 small, or the airflow only flows through the gap 45 after contacting the floor. increases the wind speed.Therefore, the suction force related to the wind speed is
Both high and low air volumes are averaged to prevent a drop in suction power, especially at low air volumes. 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 gaps 45, and only their tips are inserted into the lower case 3 through a plurality of slits 42 corresponding to the number of flexible plates. It comes out from the bottom of the. A 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. The duct 5 has a cylindrical cross section connecting the inlet 51 provided near the auxiliary brush chamber 37 of the rotating brush chamber 36 and the suction port 52 of the connecting pipe 5 rotatably provided at the rear of the mouthpiece body 1. It is a pipe, and both ends are in contact with the partition wall 33 and the connecting pipe holding wall, respectively. The duct 50 is made by overlapping an upper half piece with a semi-cylindrical cross section and a matching lower half piece with a symmetrical shape, including an upper case 2 and a lower case 3.
It is held as a pipe by a special clamp. In FIG. 2, the duct 50 is shown in phantom. The brush part 85 of the floor brush body 57 is installed in the floor brush storage part 59 which is made up of the brush cover 58 and the brush wall of the lower case 3, and the shaft parts at both ends are rotated into the bearing parts of the floor brush storage part 59. It is dynamically supported.

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 mouthpiece body and surrounding the switching lever portion, and the pedal portion 74 is Inlet hole 1
It is exposed to the outside from the upper surface of the mouthpiece main body 1 through 62.
By operating the pedal portion 74, the finger shaft reciprocates in the long groove. Since the floor brush body 57, the switching lever 69, and the lever spring are constructed in this way, 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 protrudes from the bottom surface of the mouthpiece body 1. When cleaning floors and tatami mats, this floor brush 86 comes into contact with the surface to be cleaned and sweeps it, collecting dust and scraping off stuck-on dust. ” 76 and push it down, the Shiba Kazukimane crosses the dead center at about the halfway point of the switching operation from 5 to 6 on the pedal section's ``Yuka-convex folding side'' and 6 on the ``Jiyutan side.''"Gives moderation to the switching of the pedal section 74.Finally, the "Jiyutan side" of the pedal section? When the brush part 6 falls down, the brush part 85 connected to the brush part 85 is held at a position rotated a little more than 900 degrees laterally. Therefore, the floor brush 86
It faces rearward, is stored in the floor brush storage section 59, and is pulled in from the bottom surface of the mouthpiece body 1. Therefore, when the floor brush 86 cleans the scales, it bites into the hairs of the scales, making the mouthpiece difficult to slip, and the operating force is not increased. In addition, since the side surface of the brush portion 85 is at approximately the same height and flush with the lower surface around the floor brush storage portion of the mouthpiece body 1, a large amount of coarse bristles enters into the floor brush storage portion 59, and substantially This also prevents the mouthpiece body from sinking into the scale and increasing the operating force. The Yabutekan 5 is a substantially T-shaped pipe, and has a rotating part 94 on a cylindrical outer shape extending left and right at the base.
I have 95.

A cylindrical transport pipe 96 is also connected to approximately the center of the rotating parts 94 and 95. The transportation pipe 96 passes through the elbow pipe formed in the rotating part 95 on one side.
It communicates with the suction port 52 on the 5th end face. As shown by arrows and imaginary lines in FIG. 1, 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 59 on the side of the suction port 52 is in contact with the end face of the duct 50, and as the connecting pipe 5 rotates, the end face of the rotating part 59 slides with respect to each other while maintaining the rotation. The articulating 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 articulating leaf spring and overcomes it, thereby preventing the connecting tube from falling. 106,10
Reference numeral 7 denotes stoppers projecting to the left and right of the lotus passage tube 96, which abut against the rigid portions 108 and 109 of the left and right walls of the saddle attachment recess 104, and assist in regulating the downward rotation of the joint tube.

110G, the button 112 is biased by the clamp part 1111 provided on the outer surface of the transportation pipe 96.
appears.

The power cord 113 has a plug 114 at its tip, is drawn into the suction body through a bushing 15 provided on the rear surface of the suction body 1, and is held in a serpentine press-fit between a rib and a fixed wall.

The power cord 13 is connected to the lead wire of the motor 8 and the lead wire from the microswitch by crimp terminals. The wheel 122 is mounted by fixing the axle 124 to a mounting wall 251 formed by the upper case 2 and lower case 3.

The same applies to the wheels 123. The small wheel 126 is mounted on the axle 12 within a wheel cover integrally molded with the lower case 3 made of resin.
It can be installed freely around 9.

[Effect]

To perform cleaning with the rotating brush suction port configured as described above, connect the plug 11 of the power cord 113 as shown in FIG.
4 is connected, for example, to a power source provided in the vacuum cleaner main body 153, and the pocket tube 5 is connected directly to the vacuum cleaner main body using its clamp part or to an extension pipe (not shown) that passes through the main body. .

When the vacuum cleaner is operated, airflow containing dirt from the surface to be cleaned enters the suction body 1 through the suction port 34 and the auxiliary suction port 35, passes through the rotating brush chamber 36, the auxiliary brush chamber 37,
It enters the duct 50 through the introduction port 51, passes through the duct 50, and reaches the suction port 52 of the connecting pipe 5. and intake port 52
The dust passes through the elbow part of the connecting pipe 5 and the lotus pipe 96, is sucked into the connected vacuum cleaner, and can be captured.
When the surface to be cleaned is cloth scales, the pedal portion 74 of the switching lever 69 is turned to the "clothing side" 76. At this time, the switch/driver leaves the actuator of the microswitch, the microswitch closes the circuit of the motor 8, the motor 8 is operated, and the rotating brush body 13 is driven through the belt 17 and rotates. The striking protrusions of the main brush body 14 hit and loosen the hairs of the scales, and lift up the dirt between the bristles, and the main brush 19 and the auxiliary brush 27 stir up the dirt between the bristles, resulting in an effective Clean up. At this time, the brush part 58 of the floor brush body 67 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 has fine bristles. It will not dig in, make the suction mouth slippery, and require excessive operating force. When the surface to be cleaned is a floor or a tatami mat, the "yuka/tatami side" 75 of the pedal part 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 dirt 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 2T of the rotating brush body 13 are cleaned.
However, it does not reduce cleaning efficiency by blowing away sand and dirt on the floor and tatami mats, and also prevents scratches on the floor surface due to the high speed rotating main brush 19, striking ridges 20, auxiliary brush 27, etc. It is also prevented from attaching. At this time, the brush part 85 of the floor brush body 57 rotates downward in conjunction with the switching lever 69, and the floor brush 86 protrudes downward from the floor brush storage part 59. The cleaning effect is increased by gently sweeping the tatami surface to peel off the dirt adhering to the surface and scraping out the dirt hidden in the depressions. [Effects of the Invention] Since the present invention has the above configuration, the following effects can be expected.

'i} Attach the auxiliary brush body to the main brush body of the rotating brush body, and attach this auxiliary brush body to one of the bearings (
The auxiliary brush body can be brought all the way to the end of the mouthpiece body, as it is located outside of the ball bearing).
Dust is also scraped up from the scales at the side edges, and therefore, dust accumulated in the corners of the room and along the walls can be sufficiently removed by the auxiliary brush.

In addition, a suction port where the main brush body is exposed and an auxiliary suction port where the auxiliary brush body is exposed are provided separately, and the main brush chamber and the auxiliary brush chamber are connected by a lotus passage behind the holding rib of the bearing, so the auxiliary suction port The debris that enters the main brush chamber through the auxiliary brush room and the lotus passage.It is guided into the duct from the inlet together with the debris that enters from the suction port, and only one duct is needed, especially for the auxiliary brush room. There is no need to provide a duct, so the structure is simple and can be manufactured at low cost. [o- A bridging portion is provided on the bottom of the lower case between the suction port for the main rotating brush and the auxiliary suction port of the auxiliary rotating brush body, and a holding rib that holds the bearing from both sides of the upper case and the lower case is provided in the bridging portion. Since the downstream side of the suction port for the main rotating brush and the downstream side of the auxiliary suction port are made to be suitable for cleaning, the dirt scraped up by the auxiliary brush is sucked into the duct from the lotus passage behind the holding rib at the same time. Suction can be drawn from below the bridge to the main suction port, greatly improving the cleaning effect at the side edges.

In addition, since retaining ribs are provided on both sides of the upper and lower cases to hold the bearing between the main brush and the auxiliary brush, a brush with a simple structure and stable rotation can be obtained, and assembly is easy. It's easy.

[Brief explanation of the drawing]

Fig. 1 is a partially cut away vertical sectional view showing one embodiment of the present invention, Fig. 2 is a bottom view of the same, Fig. 3 is the rotating brush body, Fig. 4 is a top view of the same, and Fig. 5 is a partial view of the same. It is a figure explaining the operation|movement of the enlarged flexible board. 1... Suction mouth body, 2... Upper case, 3...
...Lower case, 5...Connection pipe, 8...
Electric motor, 14... Main rotating brush, 15...
Auxiliary rotating brush, 16...Large pulley, 17.
...Belt, 18...Brush body, 19...
... Brush, 22 ... Bearing section, 27 ...
・Auxiliary brush, 29a, b...Retaining rib, 33
...Bulkhead, 34...Suction port, 35...
... Auxiliary suction port, 40 ... Access passage, 50.
...Duct, 161...Bridge part. Figure 1 Figure 2 Figure 3 Figure 5 Figure 4

Claims (1)

[Claims] 1. A main rotating brush body rotated by a drive source provided in a casing composed of a lower case in which a floor suction port is formed and an upper case covering the upper part, and the main rotating brush body is An auxiliary rotating brush is provided at the end of the main rotating brush on the outside of the bearing, and an inlet for the main rotating brush and an auxiliary rotating brush are provided on the bottom surface of the lower case. An auxiliary suction port for the rotating brush is provided separately, and a bridge portion is provided on the bottom surface of the lower case between the suction port for the main rotating brush and the auxiliary suction port for the auxiliary rotating brush, and the bearing is connected to the bridge portion. A floor suction port for a vacuum cleaner, characterized in that holding ribs are provided to hold the case and the lower case from both sides, so that the downstream side of the main rotating brush suction port and the downstream side of the auxiliary suction port communicate with each other. .