JPS6037727B2 - vacuum cleaner rotating brush - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a rotating brush for a vacuum cleaner, and in particular, when the brush is worn out, it can be separated from other parts such as the shaft without the need for troublesome work. This invention relates to a rotating brush that can be separated from the platform and is suitable for replacing only the inexpensive barge platform.

[Conventional technology]

Examples of conventional rotating brushes are shown in FIGS. 8 to 10.

In the example shown in FIG. 8, the barge 1 is formed integrally with the rotary shaft 2 by a method such as simultaneous molding, and the barge 3 is directly planted on the barge 1. The rotating shaft 2 and the barge 1 are driven by a belt (not shown) from a drive source that is placed on a pulley 4 that is fixedly engaged with the end of the barge 1, and is supported by bearings 5 and 6. Rotate. Due to this rotation, the sloughing effect of the brush 3 and the beating effect of the beater 7 formed on the surface of the barge platform 1 effectively clean the bathtub. In addition, 8 and 9 are bearing holders,
Reference numerals 10 and 11 denote vibration-proofing rubber, and this vibration-proofing rubber part is fixed to the wall surface of the suction port and is configured to hold the entire rotating brush. With this configuration, when the brush wears out and the rotating brush needs to be replaced, since the brush stand 1 and the rotating shaft 2 are integrated, the expensive shaft that does not need to be replaced can be replaced at the same time. This puts a heavy burden on the user and goes against resource conservation. Furthermore, when molding the thick-walled barge 1 around a relatively thin shaft using synthetic resin, even if foamable resin is used, it takes time to shrink and cool the resin during molding, and production Not only is the properties of the shaft very poor, but even after forming, the difference in the coefficient of thermal expansion between the shaft and the barge may cause the length of the bar to become unstable, or the barge may crack due to stress concentration. It had some flaws. Furthermore, FIGS. 9 and 10 show another conventional example, in which the barge platform 12 with the barge 3 is engaged by digging into a cut groove 15 of a rotating metal ring-shaped drum 14. are combined.

A beater 17 is fixed to the surface of the rotating drum 14 with a rivet 18, and is formed by bending a metal plate into a substantially U-shape, and the head of the rivet 18 is also fixed to the inner surface by welding or the like. .

Reference numeral 23 denotes a bearing holding portion which is press-fitted to the end of the rotating drum 14, and the inner ring is fixed to the fixed ball 19 through the end nut 2, and the outer ring is attached to the bearing holding portion 23 by the thrust plate 21.
It holds a ball bearing 22 fixed to and rotates together with the rotating brush.

A fixed bearing 24 is integrated with the end nut 20, and is bonded to the wall of the suction port via a vibration-proof rubber 25 covering the fixed bearing.

The barge 12 inserted into the rotating drum 14 is prevented from coming off in the axial direction by the flange inner surface 26 of the bearing holding part 23. 4 is a bearing holding/pulley part attached to one end of the rotating drum 14, and a ball bearing 2
2, and a pulley part is formed on the outer surface. (See Patent No. 63926).

[Problem that the invention seeks to solve]

In the conventional example shown in FIGS. 9 and 10 with the above-described configuration, the rotating drum 14 is separated from other parts, and by removing the barge 12 from the rotating drum 14, it is possible to replace only the barge. ``Although it does not have the drawbacks of the conventional example shown in FIG. 8, it is not easy and very troublesome to insert and pull out the barge platform 12 into the spirally twisted groove of the rotating drum 14. This was not something that the user could easily do.

Above all, not only is the metallic rotating brush itself expensive, but the beater attached to it by welding etc.
The rotating brush itself is very expensive, as the platform holding plate increases manufacturing costs, and the bearing holding part is also a separate part, making this type of vacuum cleaner expensive. In addition, in the conventional example shown in Utility Model Publication No. 49-41223, the brush is installed directly on the rotating drum, but in this example, when replacing the brush, the bearing must be discarded, which is uneconomical. Met. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to provide a rotary brush which is inexpensive and allows only the platform to be replaced without sacrificing other parts.

To achieve this objective, the present invention provides a rotating barge with a through hole, rotating around a fixed axis and directly planted with a barge.
The shaft and bearing can be separated and replaced individually. [Means for Solving the Problems] In order to achieve the above object, the present invention provides a rotating brush of a vacuum cleaner that is provided at the suction port and rotates by a drive source to scrape up dust, etc. In the rotating brush of a vacuum cleaner, which is rotatably attached to a fixed shaft passed between fixed bearings provided on both side walls of the mouth, the base of the rotating brush is formed into a cylindrical shape from synthetic resin or the like, and the cylindrical surface is A brush and a beater are integrally provided, a dowel hole is formed in one end surface of the barge stand, and a pulley having a protrusion formed on the side surface for iron attachment to the dowel hole is detachably attached to the barge stand. At the same time, an idling pulley is rotatably mounted on the fixed shaft outside of the pulley.The rotating brush according to the present invention will be described in detail below.

FIGS. 4 and 5 show an upright type vacuum cleaner equipped with a rotating brush according to an embodiment of the present invention.

In the figure, reference numeral 35 includes a motor case 62 with a built-in fan motor 51 in the lower part, an intake port 50 and an exhaust port 70, and a reel case in which a power cord 64 and a cord reel 57 for winding the plug 58 are installed in the upper part. 56 and a handle attachment/detachment part 60, the motor case 6
A dust case 40 is detachably attached to the middle part of the two-ring case 56. At the top of the dust case 40,
A handle 54 for carrying the vacuum cleaner is integrally formed,
The entire dust case 40 has a lower locking part 65 and a handle 54.
It is secured to the main body case 35 by a clamp 55 provided on the upper main body case 35. The dust case 4 is provided with a filter device 67 that can be attached and detached from a rear entrance 68. This filter device 67 includes a net filter 46, a main filter 47, and a dust removal device 48. The handle 37 for operating the vacuum cleaner is attached to the main body case 35 by a pipe portion 66 thereof being engaged by a retractable pin 61 provided on the handle attachment/detachment portion 601 on the upper part of the main body case 35 . Reference numeral 59 is a handle clamp button for pushing the retractable pin 61 to release the engagement with the handle attachment/detachment part 60 and to pull out the pipe part 66 of the handle.

The main body case 35 is rotatably supported by the mouthpiece case 36 at a rotary support part 69 provided on the side surface of the motor case 62, and the angle and locking position with respect to the mouthpiece case 36 can be determined by a pedal 41. It looks like this. The suction case 36 is provided with a front wheel 73 and a rear wheel 72 on its bottom surface, and can be moved on the surface to be cleaned by operating a handle 37. A rotating brush chamber 75 including a rotating brush 74 is formed at the front of the suction case 36, and the bottom surface is covered with a bottom plate 71 with an open suction port 76 exposing the rotating brush 74. Rotating brush 74
penetrates the side surface of the motor case 62 and connects to the suction case 36.
Due to the shaft 52 of the fan motor 51 protruding inward,
It is driven and rotated via a belt 53. 43 is a duct connecting the rotary brush chamber 75 and the joint 77 of the connecting hose 38 connected to the rear part of the suction case 36, and the L-shaped joint 78 at the other end of the connecting hose 38 is open on the rear surface of the main body case 35. It is connected to the inlet section 44.

This inlet portion 44 is connected to the dust case 40 when the dust case 40 is attached to the recess 63 of the main case 35.
It is airtightly joined to the lotus opening 45 on the rear upper surface. 42 is a bumper that protects the front and side surfaces of the mouthpiece case 36.

In the above configuration, to operate the vacuum cleaner, first pull out the power cord 64, connect the plug 58 to a power outlet (not shown), and connect the switch (not shown) provided at the top of the main body case 35. , and rotates the rotating brush 74 driven via the fan motor 51 and belt 53.

Then, hold the handle 37 and operate the pedal 41 to release the lock between the main body case 35 and the suction case 36, and while tilting the main body as shown in Fig. 5, move the entire vacuum cleaner back and forth on the surface to be cleaned. I do. brush 3 of the rotating brush 74;
The beater 7 knocks out the dirt from the cleaning surface and the dirt is swept up by the suction force of the fan motor 51 into the rotating brush chamber 75, the duct 43, and the connecting hose 38.
, enters the inside of the dust case 40 through the inlet section 44 and the lotus port 45, and enters the inside of the dust case 40 through the inlet section 44 and the lotus port 45, and the net filter section 46 and the main filter section 4.
7. Then, the purified air enters the motor case 62 through the transportation passage 49 and the intake port 50 of the main body case 35, cools the fan motor 51, and is discharged from the exhaust port 70. Reference numeral 39 is a switching lever provided on the top surface of the suction case 36, which is used to switch the rotating brush 74 when cleaning, for example, a flat floor without carpet or a tatami surface.
If you want to stop the rotation of the belt and clean it, switch to the belt 53.
The rotation of the rotating brush 74, that is, the rotation, is changed from the pulley 4 fixed to the rotating platform 1 of the rotating brush 74 to the idling pulley 84, which rotates on the sleeve 19 independently of the rotating platform 1. Stop the rotation of stand 1.

Pulley 4 and idling pulley 8 of this belt 53
The switching between the belts 5 and 4 is carried out by a switching arm that pushes and pulls the belt 53 in the direction of the ◯ arrow in FIG. 1 in conjunction with the switching lever 39. [Example] Next, the rotating brush will be described in more detail with reference to FIGS. 1 to 3.

1 is a rotary barge equipped with a through hole 85 having an inner diameter larger than the diameter of the fixed shaft 19 in the center to pass through the fixed shaft 19, and is made by molding synthetic resin or cutting out wood or the like, It is integrally equipped with a beater 7, which is a protrusion spirally provided on the outer peripheral surface.

Reference numeral 3 denotes brushes that are planted in a spiral row on the outer peripheral surface of the rotating barge 1, and the part near the end of the rotating barge 1 is different from the other parts, and the brushes are arranged in the shape of the figure. It is planted diagonally.

This is so that the tip of the brush can reach close to the side wall of the mouthpiece case 36, allowing cleaning even to the walls of the room. Reference numeral 87 is a bearing holding recess provided on the end face of the rotating platform 1, and the stepped portion 88 of the inner ring and the fixed shaft 19 and the fixed shaft 1
It is fixed vertically between an end nut 20 screwed onto the tip threaded part of C, and holds a ball bearing 22.
Ru.

24 is a fixed bearing integrated with the end nut 20.

The end nut 20 and the fixed bearing 24 are made of anti-vibration rubber 94.
The end nut portion is inserted into the notch 96 provided in the side wall 95 of the rotating brush chamber 75 from below through the
By locking the lower end of the fixed bearing with the upright portion 97 of the bottom plate 71, it is held inside the side wall 95 of the rotating brush chamber. An annular portion 98 is formed on the outer periphery of the fixed bearing 24, and this annular portion 98 covers the outer periphery of the end surface of the rotating barge 1.
This prevents dirt from entering the bearing holding recess 87. A pulley 4 is engaged with the pond end of the rotating barge 1 by iron fittings of its cylindrical mounting part, and the rotating barge 1 and the pulley 4 are fitted into matching holes 100 and 101 on the end face of the rotating barge 1. - The protrusions 102 and 103 of the rim fit together, thereby fixing in the rotational direction. A bearing holding portion 104 is formed inside the pulley 4 . The ball bearing 22 is
The inner ring is tightened and fixed via a washer and sleeve between the stepped part 105 of the fixed shaft 19 and the end nut 20 screwed onto the threaded end of the fixed shaft 19, and the outer ring is fixed via a thrust plate to the bearing holding part. 104 in the direction of the ball. Therefore,
The pulley 4 is also pressed against the rotating platform 1 side and is also fixed in the axial direction. Reference numeral 24 denotes a fixed bearing integrated with the end nut 20. Similarly to the other end side described above, the end nut and the fixed bearing are attached to the side wall 95 of the rotating brush chamber 75 via a vibration isolating rubber 94. Iron attached to the notch 114,
In addition, the lower end of the fixed bearing is fixed to the inner side of the side wall 95 of the rotating brush chamber 75 by being locked by the upright portion of the bottom plate 71.

The idling pulley 84 has a flat bearing fixed to its inner periphery by a fixed plate, and rotates on the outer periphery of a sleeve that is tightened and fixed between the end nut 20 and the inner ring of the ball bearing 22. It is configured to rotate independently. 119 is the mouthpiece case 36
It is a felt-like partition plate held by a holding case 122, and the inner end has a semicircular arc shape, and when the two pieces are put together, it slides in close contact with the entire outer circumference of the cylindrical attachment part of the pulley 4, and the suction This prevents dirt sucked in from the port 76 from entering the pulley side.

As mentioned above, when the brushing effect of the rotary brush used over a long period of time wears out and the scraping effect becomes weak, it becomes necessary to replace the rotary brush.

In this case, the bottom plate 71 is removed from the suction case 36 and the rotating brush 74 is pulled out from the rotating brush chamber 75. FIG. 2 shows this pulled out state. And fixed shaft 8
6. By removing the end nuts 20, 20 at both ends, the fixed shaft 19 can be removed from the ball bearing, and the fixed shaft 1
9 to idling pulley 84 set, sleeve,
Washers etc. can also be removed. Therefore, the fixed shaft 19 can be extracted from the through hole 85 of the rotating platform 1. Then, when the pulley 4 is removed from the rotating platform 1, as shown in Fig. 3,
It can be a single rotating barge, and only the rotating barge on which the barge is planted can be replaced with a new one. Then, it can be reassembled in the reverse order of disassembly to the state shown in FIG. 2, and then installed in the rotating brush chamber 75. In addition, when first removing the end nut from the fixed shaft, remove only the end nut on one side and do not remove the idling pulley Ichiyanagi.
Ball bearing 22 and idling pulley 84
It is clear that disassembly and assembly will be made easier if the fixed shaft 19 is pulled out from the ball bearing 22 and the through hole 85 in the direction of arrow Q in FIG. 2 while the end nut 20 is attached to the fixed shaft 19. be. [Effects of the Invention] Since the present invention has the above-mentioned configuration, it has the following effects.

[E] The rotating brush of the vacuum cleaner, which is installed at the suction port and rotates by a drive source to scrape up dust, is rotatably attached to a fixed shaft that is passed between fixed bearings installed on both sides of the suction port. Once installed, it is very easy to assemble and disassemble, and the barge can be replaced on its own. When the barge wears out, you only need to replace the inexpensive barge, leaving other parts such as the shaft and booley as they are.

'o} The brush base of the rotating brush is formed into a cylindrical shape from synthetic resin or the like, a brush and a beater are integrally provided on the surface of the cylinder, and a matching hole is formed in one end surface of the brush base, Since a pulley with a protrusion formed on the side for ironing the rigging hole is removably attached to the barge, the cheap synthetic resin barge can be replaced and thrown away, and the pulley has no protrusions on the side. It is convenient because it can be easily attached to a barge using the protrusion provided.

In addition, unlike when using a metal rotating drum, there is no need to assemble a separate beater or a separate support plate to the rotating drum, or a separate bearing holder, so the rotating brush It has the effect of being extremely inexpensive.

Furthermore, synthetic resin barges have less product variation and are light, so vibrations and the like are less likely to occur even when rotating at high speeds.

Since the idling pulley is rotatably attached to the outside of the fixed shaft pulley, the rotating brush can be smoothly rotated or stopped, and it is also easy to assemble and disassemble when replacing the barge. .

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a rotating brush portion of an embodiment of the rotating brush according to the present invention. FIG. 2 is a sectional view showing only the rotating brush taken out from FIG. 1. FIG. 3 is a partially sectional front view showing only the rotating barge in FIG. 2, and FIG. 4 is a perspective view showing the external appearance of an abrite-type vacuum cleaner equipped with an embodiment of the rotating brush according to the present invention. , FIG. 5 is a partially sectional side view showing the internal structure of the Abrite type vacuum cleaner, FIG. 6 is a sectional view of the platform, FIG. 7 is a side view in the P direction of FIG. 5, and FIG. FIG. 9 is a partially sectional front view showing a rotating brush and bearing of an example of a rotating brush according to the prior art; FIG. 9 is a partially sectional front view showing another conventional example;
0 is a sectional view taken along the line CC in FIG. 9, and FIG. 11 is a sectional view showing only the rotating brush, similar to FIG. 4 showing another embodiment of the present invention. 1...Bale stand, 3...Bake, 4...Pulley, 7...Beater, 1
9...Fixed shaft, 24...Fixed bearing, 3
5... Body case, 36... Suction case, 39... Winding lever, 51... Fan motor, 67... Filter device, 74・・・・・
Rotating brush, 75...Rotating brush chamber, 84...
...Idling pulley, 85...Through hole,
100, 101...Matching hole, 102, 103
…···protrusion. Figure 1 Figure 2 Figure 3 Figure 4 Figure 6 Figure 7 Figure 8 Figure 5 Figure 9 Figure 10 Figure 11

Claims (1)

[Claims] 1. An electric vacuum cleaner's rotating brush, which is installed at the suction port and is rotated by a drive source to scrape up dust, is rotatably attached to a fixed shaft that is passed between fixed bearings installed on both side walls of the suction port. In the rotating brush of a vacuum cleaner, the brush base of the rotating brush is formed into a cylindrical shape from synthetic resin, etc., a brush and a beater are integrally provided on the surface of the cylinder, and a matching plate is provided on one end surface of the brush base. A pulley having a hole formed therein and a protrusion formed on the side surface that fits into the dowel hole is removably attached to the platform, and an idling pulley is rotatably attached to the outside by the pulley on the fixed shaft. A rotating brush for a vacuum cleaner.