JPS6032456B2 - Vacuum cleaner rotating brush mouthpiece - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a vacuum cleaner, and particularly to a rotating brush suction port with an auxiliary brush that prevents lint from getting entangled in the bearing portion and dirt from entering.

[Conventional technology]

In conventional rotating brush suction ports, lint gets entangled in the bearing of the rotating brush body, and dust gets in.
This caused the bearing to lock up, causing burnout of the motor that was the drive source and damage to the belt.

・In the conventional type, a bearing was installed between the main brush and the auxiliary brush as shown in Figure 3, so it is now possible for lint to enter from this part and become entangled in the shaft, locking the rotation of the brush. It was hot.

[Problem that the invention seeks to solve]

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to provide a rotary brush suction port having a bearing portion of a rotary brush body that prevents the intrusion of dust.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a bearing between a main brush body and an auxiliary brush body, a dustproof cover that covers the outer periphery of the bearing, and a dustproof cover that covers both sides of the dustproof cover. The surface is provided with a thin annular lip that protrudes toward the end faces of the main brush body and the auxiliary brush body, and each end face of the main brush body and the auxiliary brush body is provided with a lip that protrudes toward the dustproof cover and has a slight gap between the lip and the lip. It is characterized by having an annular lip that wraps around it.

〔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,
It is equipped with a duct 50, etc., and a suction port 34 and an auxiliary suction port 35 are closed at the front of the lower surface, and a passage is passed through these suction ports and the duct 50 at the rear, and the main body 1 of the bracket can also be rotated in the front-rear direction. A connecting pipe 5 that can be freely connected is installed.

The connecting pipe 5 is connected directly to the vacuum cleaner main body by a clamp part or connected to an extension pipe (not shown) continuous to the vacuum cleaner main body. A pair of small wheels 229 and 12? are provided at symmetrical positions at the rear of the wheel wealth 229 23 and the suction port 34.Furthermore, on the lower surface of the suction body turtle and behind the suction port 34, A floor brush body 5? is provided.
The brush part fin 5 of the floor brush body S★ is rotated approximately 90 degrees backward in the floor brush storage part flea g by operating the switching lever 69 provided on the top surface of the mouthpiece body, and is planted in a straight line on the bottom surface. The floor brush cod 8 is stored with the floor brush 8 facing downwards and facing backwards.A flexible plate crane turtle, which will be explained later, is installed on the lower surface in front of the suction port 8 turtle. The upper case base and the lower case 3, which constitutes the main part of the lower surface, the sides, and a part of the front and rear surfaces, and the joint cover that covers the attachment part of the connecting pipe on the lower surface. The screws are taken from a plurality of screws a to g, and numbers awo and 7b are fixed to the upper case, respectively.

The built-in parts such as the electric motor crab in the mouthpiece body ``rotating brush body 3 ~ duct ha 8 etc. are upper case lacquer and lower case S joint cover 4
It can also be held in place by putting the weights together. A motor-woven vibration-proof rubber crab is held in the motor support arm of the mouthpiece body via a ridge, and a small pulley Kazuki 2 is attached to the tip of the rotary ball trainer.

The rotating brush body turtle S army consists of the main brush body turtle and the auxiliary brush body electrically conductive.One end of the main brush body electric turtle is formed with a large pulley and a small Booley turtle 2. The scale force is transmitted from the belt member 1 to the belt member 1. In this embodiment, the main brush body ridge 4 is also made of resin which is molded in secondary molding onto the large pulley. The main brush body is equipped with two main brush grooves, which are plumbed in a spiral shape, and two hard protrusions that also protrude in a spiral shape on the surface of the main brush body. At the end of the pond, there is a long, integrated brush body shaft casing protruding from the main brush body, into which a ball bearing chamber window is press-fitted via a screwdriver. A stepped portion 23 and a left-hand threaded portion 24 are provided at the tip of the shaft 18, and a left-hand nut 26 onto which the auxiliary brush body 16 is screwed onto the left-hand threaded portion 24 via a washer 25 that engages with the stepped portion 23. The auxiliary brush body 5 has several auxiliary brushes 27 installed on its outer periphery.The ball bearing 22 has a rubber anti-vibration cover 28.
is covered with the suction main body 1 through this anti-vibration cover 28.
The retaining rib 298; 29M is retained. The end of the large pulley part 16 of the brush body shaft turtle 8 is supported by a flat bearing 38 made of T oil-impregnated alloy, etc., and is held in the holding case 32 of the mouthpiece body through a bearing cover 31. The main brush body tatami fin of the rotating brush body 3 and the auxiliary brush body ears 6G are separated from the interior of the suction body tatami pond by a partition 83, and the suction port 34 and the auxiliary suction port wing are connected at the top. The rotating brush chamber 38G is located in the rotating brush chamber 8 and the auxiliary brush chamber S, and is almost separated from the belt chamber groove 9 by the side wall 3 through which the main brush body electric turtle passes. The rotating brush chamber 36 and the auxiliary brush chamber 37' are connected to the lotus passage Kamegawa behind the holding rib group a.The side edges of the suction port 34 are connected to the main body of the suction port 6, There is a dirt introduction groove 8, which is recessed from the lower front surface.

The bottom surface of the suction body between the suction port 34 and the auxiliary suction port 8 is a concave bridge portion, similar to the dirt introduction groove turtle 68. The protection plate 41 is attached to the lower surface of the mouthpiece body so as to constitute the rear edge of the suction spout 3, and is configured to substantially cover the rear part of the large suction mouth 3.

Protective board 4! A person accidentally removes the rotating brush chamber 3 from the suction port 3
6' It is made of a flexible elastic material so that if you put your finger in it, it will not get caught between the 2 striking ridges of the rotating rotating brush weight 3 and the green ink 2 behind the suction port and cause injury. Kason board 441
It is a thin plate-like tongue piece with a highly exposed tip that is attached to the front side of the suction port 3, that is, the bottom surface of the bottom surface of the suction mouth body at the very front, protruding downward.Several pieces of the same shape are slightly They are arranged at equal intervals with gaps 45 in between, approximately covering the full width of the three suction ports.

Even if the corner of the main body of the suction mouth touches the floor when it is placed on the floor, the airflow flowing from the front to the suction mouth S through the gap between the front green part 46 of the suction mouth and the floor will be prevented. The maneuverability serves to control the wind speed at the inlet 34.
The duct 50 has 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. It is a pipe, and both ends thereof are in contact with the partition wall 33 and the connecting pipe holding wall 53a, respectively.

The duct 50 is made by overlapping an upper half piece 54 with a half-cylindrical cross section and a matching lower half piece 55 with a symmetrical shape.A spigot 56 is provided at the joint, and the upper case 2 and lower It is held as a pipe by the case 3.

56 is a support rib that supports the central portion of the duct. In FIG. 5, the duct 50 is shown in phantom lines. Floor brush body 5
7, the brush part 85 is connected to the brush cover 58 and the lower case 3.
The brush walls 58' are arranged in the floor brush storage section 59.
It is rotatably supported by bearing parts 62 and 63 of 9.

The floor brush storage section 59 is provided with a bottom plate bridge 64 for reinforcement at approximately the center thereof. The shaft portion 61 extends further from the side surface 65 of the floor brush storage portion, and an arm 66 is integrally provided at its tip. A spring hanging shaft 68 is provided on the outside of the tip of the arm 66 and on the inside of a sliding shaft 67 so as to form a substantially T-shape with the arm 66 . The switching lever 69 is rotatably supported around lever shafts 70 and 71 on both sides by lever bearings provided on a lever partition provided on the suction mouth body and surrounding the switching lever section, and the pedal section 7
4 is exposed to the outside from the upper surface of the mouthpiece body 1 through the pedal outlet hole 162. A spring holding hole 77 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 portion 74 at approximately the center of the lower surface of the switching lever 69, and has a sliding elongated hole 80 at its tip. The sliding elongated hole has a width slightly larger than the diameter of the sliding shaft 67 of the floor brush body 57, and the sliding shaft 67 is mated to this. The sliding spinal cord 67 reciprocates in the sliding elongated hole 80 by operating the pedal portion T4. The lever spring is an 8-lug twisted coil spring, with one end having a substantially annular end 82 and the other end having an L-shaped end 83. This substantially 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 L-shaped end portion 83 has its tip inserted into the spring holding hole 77 in the lever shaft 71 of the switching lever. is inserted, and the lever spring 81 is connected to the switching lever 6.
9 and the floor brush body 57, an urging force is generated that presses the arm 66 of the floor brush body below the sliding elongated hole 80.
Both ends of this lever spring 81 are connected to spring hanging shafts 68, respectively.
and the spring holding hole 77. This floor brush 86
However, when cleaning floors and tatami mats, it comes into contact with the surface to be cleaned, sweeps it, collects dirt, and scrapes off stuck-on dirt.

Therefore, the floor brush 86 does not get caught in the hair of the liner when cleaning the liner, making the mouthpiece difficult to slip and increasing the operating force. In addition, since the side surface 87 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 mouthpiece main body 1, a large amount of the woven bristles enters the floor brush storage portion 59, thereby effectively absorbing the suction. □It also prevents the main body from sinking into the vertical position and increasing the operating force. When the vacuum cleaner is operated, the airflow containing dust 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 and the auxiliary brush chamber 37, and then enters the inlet 51. enter the duct 50, pass through the duct 50,
It reaches the suction port 52 of the connecting pipe 5.

Then, the dust is sucked into the vacuum cleaner 153 connected through the suction port 52 and can be captured. Here, when the surface to be cleaned is woven, the pedal portion 74 of the switching lever 69 is turned to the "clothing side" 76. At this time, the switch lever 78 leaves the actuator 91 of the microswitch 90, and the microswitch 9 closes the circuit of the motor 8, and the motor 8 is operated.The rotating brush body 13 is driven through the belt 11 and rotates.Then, the main brush body The beating protrusions 20 of 14 beat the hair of the twill weave to loosen it and lift the dirt between the hairs, and the main brush 19 and the auxiliary brush 27 stir up the dirt between the hairs for effective cleaning. At this time, the floor brush body 57
The brush part 85 is moved by the lever 69 and rotates backward, and the floor brush 86 is stored in the floor brush storage part 59, so the floor brush 86 gets into the bristles of the cloth and cleans the mouthpiece. It does not cause slippage or excessive operating force. If the surface to be cleaned is a floor or tatami mat, press the pedal part 7 of the switching lever 69.
Defeat 75 on the "Yuka/Tatami side" in #4. 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 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. The main brush 19, the striking ridges 20, the auxiliary brush 27, etc., which rotate at high speed, prevent scratches on the floor surface. At this time, the brush part 85 of the floor brush body 57 is moved by the switching lever 69 and rotates downward, and the floor brush 86 protrudes downward from the floor brush storage part 59. - Sweep the tatami surface gently to peel off dirt adhering to the surface and scrape out dirt hidden in depressions to increase the effectiveness of cleaning. However, when the rotating brush body sucks in long lint during cleaning, it gets entangled in the bearing between the main brush body and the auxiliary brush body, causing the end face of the main brush body or the end face of the auxiliary brush body to connect with the bearing. A problem arises in which a lock phenomenon occurs between the two. In such a case, in the embodiment of the present invention, a lip is provided on the bearing portion to provide a bearing portion that does not allow lint to become entangled in the bearing portion, and at the same time, allows less dust to enter.

In FIG. 1, 14' is a main brush body having an annular ridge A167 on its end surface, and the main brush 19 is installed therein.

Reference numeral 15' denotes an auxiliary brush body having an annular ridge B168 and an annular ridge CI69 on the end face, and the auxiliary brush 27 is installed therein.

Anti-vibration cover 28 covering the ball bearing 22
' is provided with a thin plate annular lip AI67 and a lip B166 on both end faces thereof. The annular peak AI67 has a slight gap in the semicircular direction with the outer periphery of the ball bearing, and also has a slight gap with the lip AI65 in the radial direction. The lip AI65 has a small gap in all axial directions with the end face of the main brush body 14'. The lip B166 is inserted between the annular ridge B168 and the annular ridge CI69, and also has a small gap in the radial direction with both annular ridges, and also has a small gap in the radial direction with the end surface of the auxiliary brush body 15'. It is structured as follows. [Effects of the Invention] Since the present invention has the above-mentioned configuration, it has the following effects.

That is, the rotating brush body is composed of a main brush body and an auxiliary brush body, a bearing is provided between the main brush body and the auxiliary brush body, a dustproof cover is provided to cover the outer periphery of the bearing, and a dustproof cover is provided on both sides of the dustproof cover. A thin annular lip that protrudes toward the end faces of the main brush body and the auxiliary brush body is provided, and each end face of the main brush body and the auxiliary brush body protrudes toward the dustproof cover and wraps with the lip with a slight gap. Since the annular lip is provided, the spaces 170 and 171 between the fixed-side vibration isolating cover, the main brush body, and the auxiliary brush body are sealed from dirt by each lip and the annular part, which have a so-called labyrinth structure. This space can prevent thread dust from getting entangled and minute dust from entering.Thus, dust can get tangled between the inner ring of the rotating pole bearing and the fixed outer ring, and prevent it from getting caught in the ball bearing. No locking phenomenon occurs.As described above, according to the present invention, it has been possible to obtain a brush suction port having a bearing for a rotating brush body that prevents the intrusion of dust.

[Brief explanation of drawings]

Fig. 1 is a partial sectional view showing an embodiment of the present invention, Fig. 2 is a view showing the internal structure, Fig. 3 is a plan view showing a conventional rotating brush body, and Fig. 4 is a bottom view of the embodiment. , FIG. 5 is a longitudinal sectional view of the same, FIG. 6 is a top view of the same, and FIG. 7 is a rear view of the same. 14'... Kipurashi body, 15'... Auxiliary brush body,
22...Ball bearing, 23...Shaft, 28'...Dust-proof cover, 165...Lip A, 166...
・Rip B, 167...Annular mountain part A, 168...
- Annular mountain part B, 170... void. Figure 1 Figure 2 Figure 3 Figure 7 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1. In a rotating brush suction mouthpiece equipped with a rotating brush body rotated by a drive source provided in the suction mouthpiece body, the rotary brush body is composed of a main brush body and an auxiliary brush body, and there is a space between the main brush body and the auxiliary brush body. A bearing is provided, and a dust-proof cover is provided to cover the outer periphery of the bearing, and thin annular lips are provided on both sides of the dust-proof cover that protrude toward the end faces of the main brush body and the auxiliary brush body. A rotary brush suction port for a vacuum cleaner, characterized in that an annular lip is provided on each end face of the lip, the lip protruding toward the dustproof cover, and wrapping around the lip with a slight gap.