JP2005110965A - Suction nozzle of vacuum cleaner and cleaner using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively collect positively- or negatively-charged dust while pulling thereto by the Coulomb force by a reverse polarly charged rotary brush and electrically neutralizing. <P>SOLUTION: The suction nozzle has the rotary brush 4 having a plurality of fibers, a positive pole plate 7, which is a positively charged material of the charged system and a negative pole plate 8, which is a negatively charged material of the charged system. The positive pole plate 7 and the negative pole plate 8 are provided contactably to the tips of some of the fibers of the rotary brush 4. Consequently since the rotary brush 4 is positively- or negatively-charged by contacting the positive pole plate 7 and the negative pole plate 8, the rotary brush pulls the dust thereto by the Coulomb force and electrically neutralize, efficiently collecting dust, whether dust is positively charged or negatively charged. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a household vacuum cleaner suction nozzle and a vacuum cleaner using the same.

  Conventionally, many vacuum cleaners that use electrostatic coulomb force to improve dust collection efficiency have been proposed. Improving collection efficiency by applying voltage directly to sucked dust (for example, see Patent Documents 1 and 2), applying voltage to dust on the floor to electrically neutralize dust that was originally charged There are those that increase the collection efficiency (see, for example, Patent Documents 3 and 4).

In addition, there is a material in which the brush material is limited so that it is negatively charged when a rotating brush in the suction nozzle is in frictional contact with a carpet or the like without directly applying a voltage (see, for example, Patent Document 5). These all use the property that dust tends to be positively charged, and conversely, the brush is negatively charged and has the effect of attracting dust.
Japanese Patent Laid-Open No. 5-130953 JP-A-8-140908 JP-A-7-59687 Japanese Patent Laid-Open No. 7-59691 Japanese Patent Laid-Open No. 11-216089

  Regarding the above-mentioned Patent Documents 1 to 4, a voltage of several kV or more must be applied, which not only has a safety problem, but also requires an electric circuit that generates the voltage, and proposes an inexpensive vacuum cleaner. I can't say I can.

  On the other hand, the proposal as in Patent Document 5 can be said to be an inexpensive proposal that does not require an electric circuit in view of the above problems. However, there is a problem in that dust is limited and handled as being easily charged positively.

  Certainly, dust is made up of rugs, clothing waste, paper waste, dust from glass and quartz, etc., and these are arranged on the positive electrode side in a charged series, so they seem to be easily charged positively. . However, which polarity is charged is determined by the correlation of charge series between materials. That is, the dust on a certain floor material is charged to the negative electrode when the dust is on the negative electrode side in the charging series from the floor material. For example, if the flooring is a carpet such as wool or polyamide, or if it is a glass-coated flooring, the dust and paper scraps present on the flooring are negatively charged because the charging series is on the negative electrode side of the flooring. It is doing.

  In other words, dust is charged positively or negatively, or it depends on the material of the flooring on which the dust is placed. Rather, the flooring is more likely to have a charged series on the positive side than the dust, and the dust is negative. It is thought that it tends to be charged. Therefore, even if dust collection is attempted with a negatively charged brush, only the positively charged flooring material is electrically neutralized, and the negatively charged dust repels the brush, which in turn reduces the dust collection efficiency.

  As described above, the conventional technique for increasing the dust collection efficiency by static electricity is not inexpensive, and even if it is inexpensive, it cannot be said that the dust collection efficiency is increased.

  In order to solve the above-described conventional problems, a vacuum cleaner suction nozzle according to the present invention includes a rotating brush having a plurality of fibers, a positive electrode plate whose charging series is on the positive electrode side, and a negative electrode plate whose charging series is on the negative electrode side. The positive electrode plate and the negative electrode plate are provided so as to be able to contact at least a part of the tips of the fibers of the rotary brush.

  As a result, the rotating brush can be charged to either plus or minus. As a result, both positively charged dust and negatively charged dust can be electrically neutralized. In addition, since no voltage is applied, this configuration does not require an electric circuit.

  In the suction nozzle for a vacuum cleaner of the present invention, the rotating brush can be charged in both polarities, so regardless of the material such as the floor and the kind of dust present there, that is, the dust is positive. Even if charged or negatively charged, dust can be electrically neutralized, so that the efficiency of collecting dust is further increased.

  A first invention includes a rotary brush having a plurality of fibers, a positive electrode plate whose charging series is on the positive electrode side, and a negative electrode plate whose charging series is on the negative electrode side, and each of the positive electrode plate and the negative electrode plate is the rotary brush. It is set as the structure provided so that contact with respect to the front-end | tip of at least one part of this fiber was possible.

  Brushes that come into contact with a plate that is on the positive electrode side of the brush are charged positively, and brushes that come into contact with a plate that is on the negative side of the brush from the brush are negatively charged. The positively charged dust is negatively charged by the brush, and the negatively charged dust is positively charged by the brush. It is possible to collect dust efficiently.

  In the second invention, the positive electrode plate and the negative electrode plate of the first invention are alternately arranged one by one or plurally in the direction of the rotation axis of the rotary brush. Usually, the suction nozzle of the vacuum cleaner has a horizontally long shape, and the rotary brush incorporated therein is also long in the direction of the rotation axis. If the positive electrode plate and the negative electrode plate are alternately arranged one by one or a plurality of them along the rotation axis direction of the brush, the rotating brush will be charged with the plus and minus alternately arranged in the rotation axis direction. It is done. In other words, when the horizontally long suction nozzle is moved relative to the floor surface, positive and negative effects are given to the floor in a striped pattern. When cleaning, move the suction nozzle back and forth in small increments, or if the positive and negative plates are placed at short intervals, the positively charged brush and the negatively charged brush will both contact the floor. Will do. Accordingly, dust charged positively and dust charged negatively can be attracted, and neutralized electrically, thereby increasing dust collection efficiency.

  In the third and fourth inventions, when the positive electrode plate and the negative electrode plate are movable, or the rotation shaft of the rotary brush is movable and the positive electrode plate is in contact with the rotary brush, the negative electrode plate and the rotary brush are not in contact with each other. When the is in contact with the rotating brush, the positive electrode plate and the rotating brush are arranged so as not to contact each other.

  As a result, a specific part of the rotating brush can be charged positively or negatively and varied, and not only the dust charged positively or negatively can be collected effectively, but also one part of the rotating brush Dust that is charged only to one of the polarities and adheres to it, and that is charged opposite to the polarity, can be removed by reverse charging, and the dust collection effect is increased. .

  According to a fifth aspect of the invention, when the suction nozzle of the third or fourth aspect of the invention is advanced with respect to the floor surface, the fiber of the rotating brush comes into contact with either the positive plate or the negative plate, and the suction nozzle is placed on the floor. When retracted with respect to the surface, the fibers of the rotating brush are configured to come into contact with a plate different from the plate contacted during advance. Usually, when cleaning is performed, the suction nozzle is generally slid back and forth, and there is at least one reciprocation, that is, back-and-forth movement on the same floor surface. In accordance with each movement, the rotating brush is positively and negatively charged, so that the rotating brush charged positively and negatively contacts the floor surface at least once during one reciprocation. Therefore, dust charged positively or negatively can be collected effectively. In addition, since one part of the rotating brush is not charged to only one of the polarities, dust that has adhered to it and is charged in the opposite direction can be removed by reverse charging. And the dust collection effect increases.

  According to a sixth aspect of the present invention, the positive electrode plate and the negative electrode plate of the first invention are shaped like a rod having a semicircular cross section, and the positive electrode plate and the negative electrode plate are bonded to each other to form one rod-like positive / negative charging rod, The positive and negative charging rods are arranged so that the axial direction of the positive and negative charging rods can be brought into contact with the fibers of the rotating brush and substantially parallel to the rotating shaft of the rotating brush, and is rotatable. Thereby, when the rotating brush is in contact with the positive electrode plate and rubbing the surface, the rotating brush is negatively charged. At this time, the positive and negative charging rods rotate by friction with the rotating brush, the negative electrode plate side faces the rotating brush, and the rotating brush contacts the negative electrode plate and rubs its surface, so the rotating brush is charged positively. To do. Further, the positive and negative charging rods rotate by friction, and the positive electrode side plate comes into contact with the rotating brush. By repeating such a movement, the rotating brush alternately repeats positive and negative charging. Therefore, dust charged positively or negatively is effectively collected. In addition, since one part of the rotating brush is not charged to only one of the polarities, dust that has adhered to it and is charged in the opposite direction can be removed by reverse charging. And the dust collection effect increases.

  The seventh invention is a vacuum cleaner using the suction nozzle for a vacuum cleaner according to any one of the first to sixth inventions. As a result, a vacuum cleaner using a suction nozzle with improved dust collection performance can be realized, and as a result, a vacuum cleaner with improved dust collection performance can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 is a top perspective view of a suction nozzle of a vacuum cleaner according to a first embodiment of the present invention. FIG. 2 also shows a side perspective view of the suction nozzle.

  In FIG. 1 and FIG. 2, the suction nozzle 1 is communicated with a vacuum cleaner body (not shown) by a flexible hose 2, and is located below the suction port 3 by the suction force of an electric blower built in the vacuum cleaner body. The floor is configured to suck dust (not shown).

  Inside the suction nozzle 1, there is a rotating brush 4 to which fibers are attached radially from the central axis, and the drive of the motor 5 is transmitted to the rotating brush 4 via the timing belt 6 and rotates. By the rotation of the rotating brush 4, dust below the suction port 3 is scraped out and detached from the floor surface such as a carpet so that the dust is easily sucked.

  The positive electrode plate 7 and the negative electrode plate 8 are plates arranged alternately along the rotary brush 4, and have a function of charging the rotary brush by friction with the rotary brush 4. The material of the positive electrode plate 7 has a positive charge series than the material of the rotary brush 4, and the material of the negative electrode plate 8 has a negative charge series than the material of the rotary brush 4. In the present embodiment, polyester fiber is used as the material for the rotating brush 4, glass is used as the material for the positive electrode plate 7, and fluororesin is used for the negative electrode plate 8.

  The operation and action of the suction nozzle of the vacuum cleaner configured as described above will be described below.

  First, when the main body of the vacuum cleaner is driven, the suction force of the electric blower causes negative pressure in the suction nozzle 1, sucks up dust below the suction port 3, passes through the flexible hose 2, and moves to the main body of the vacuum cleaner. It will be carried. At this time, the main body of the vacuum cleaner also supplies power to the motor 5, and the motor 5 rotates, and the rotation drive is transmitted through the timing belt 6 to rotate the rotating brush 4. In this embodiment, the number of rotations is about 3000 rotations per minute. The rotating brush 4 sweeps the floor surface below the suction port 3 and scrapes dust that has entered the carpets and grooves.

  At this time, the rotating brush 4 is charged because it is in frictional contact with the positive electrode plate 7 and the negative electrode plate 8 made of different materials. The portion in contact with the positive electrode plate 7 is negatively charged, and the portion in contact with the negative electrode plate 8 is positively charged. This is because the material constituting the rotating brush 4 is polyester, the positive electrode plate 7 has a positive charge side glass, and the negative electrode plate has a negative electrode side fluororesin.

  When the rotating brush 4 is charged, dust is easily detached from the floor surface. This is because dust is also charged, so when a brush of opposite polarity comes into contact with it, it is attracted by its Coulomb force, or it is electrically neutralized, so the adhesion to the floor surface is weakened. It is. In addition, as in this embodiment, the brush is in contact with the floor with a positive and negative charge, so both positively charged dust and negatively charged dust can be efficiently collected. is there.

  In the present embodiment, a plurality of positive electrode plates 7 and negative electrode plates 8 are alternately arranged. In other words, since the positive and negative charged bands are alternately arranged in the rotating brush 4, if the suction nozzle 1 is moved sideways while reciprocating, the positively charged brush and the negatively charged brush are on the same floor surface. The possibility of touching a place increases.

(Embodiment 2)
FIG. 3 shows a top perspective view of the suction nozzle of the electric vacuum cleaner according to the second embodiment of the present invention. 4 and 5 also show side perspective views of the suction nozzle.

  In the second embodiment, the description of the parts that basically overlap with the functions and configurations of the first embodiment is omitted, and the positional relationship between the rotating brush 4, the positive electrode plate 7, and the negative electrode plate 8 is mainly described. Explain in detail.

  In FIG. 3, the positive electrode plate 7 and the negative electrode plate 8 are arranged in parallel with the rotating brush 4. However, as shown in FIGS. 4 and 5, the positive electrode plate 7 and the negative electrode plate 8 are arranged so as not to contact the rotating brush 4 at the same time.

  The rotating shaft of the rotating brush 4 has a structure that can move back and forth although not shown. For example, a portion that holds the shaft has a horizontally long slit shape. Accordingly, when a force is applied forward, the rotating brush 4 moves forward and contacts the positive electrode plate 7, and when a force is applied rearward, the rotary brush 4 moves rearward and contacts the negative electrode plate 8. That is, when the suction nozzle 1 is moved forward while being pressed against the floor surface, the rotary brush 4 is applied with a force behind and comes into contact with the negative electrode plate 8 as shown in FIG. On the other hand, when the suction nozzle 1 is retracted, the rotary brush 4 is applied with a force in front and contacts the positive electrode plate as shown in FIG.

  Usually, when the floor surface is cleaned with an electric vacuum cleaner, the suction nozzle 1 is moved back and forth for cleaning. That is, when the suction nozzle 1 is moved forward, the rotary brush 4 is charged positively, and when the suction nozzle 1 is moved backward, the rotary brush 4 is charged negatively.

  In other words, the floor surface is cleaned by contact with the positively charged rotating brush 4 and by contact with the negatively charged rotating brush 4, so that dust on the floor surface is positively charged. Regardless of whether it is charged or negatively charged, dust is collected effectively.

(Embodiment 3)
6 and 7 are side perspective views of the suction nozzle of the electric vacuum cleaner according to the third embodiment of the present invention.

  In the third embodiment, the description of the parts that basically overlap with the functions and configurations of the first and second embodiments is omitted, and the positional relationship between the rotary brush 4, the positive electrode plate 7, and the negative electrode plate 8 is mainly used. Explain in detail.

  6 and 7, the positive electrode plate 7 and the negative electrode plate 8 are pivotally supported by the plate shaft 9, rotate around the plate shaft 9, and when the positive electrode plate 7 contacts the rotating brush 4, the negative electrode plate Reference numeral 8 denotes a structure in which the positive electrode plate 7 does not contact the rotating brush 4 when the negative electrode plate 8 does not contact the rotating brush 4 and the negative electrode plate 8 contacts the rotating brush 4.

  A rubber lip 10 is provided below the negative electrode plate 8, and the rubber lip 10 serves as a power point, and the plate shaft 9 serves as a fulcrum to move both plates.

  FIG. 6 is a view when the suction nozzle 1 is moved forward. At this time, the rubber lip 10 in contact with the floor surface receives a force backward, and the negative electrode plate 8 contacts the rotating brush 4. FIG. 7 is a view when the suction nozzle 1 is retracted. At this time, the rubber lip 10 in contact with the floor surface receives a force forward, and the positive electrode plate 7 contacts the rotating brush 4.

  That is, when the suction nozzle 1 is moved forward, the rotary brush 4 is charged positively, and when the suction nozzle 1 is moved backward, the rotary brush 4 is charged negatively. As described above, the normal cleaning is performed while reciprocating the suction nozzle 1 back and forth, so that, as in the second embodiment, contact with the rotating brush 4 charged positively with respect to the floor surface, minus Since the cleaning by contact with the rotating brush 4 is performed, dust is collected effectively regardless of whether the dust on the floor surface is positively charged or negatively charged.

(Embodiment 4)
FIG. 8 shows a side perspective view of the suction nozzle of the electric vacuum cleaner according to the fourth embodiment of the present invention.

  In the fourth embodiment, the description of the portions where the functions and configurations basically overlap with those of the other embodiments is omitted, and the positional relationship between the rotating brush 4, the positive electrode plate 7, and the negative electrode plate 8 is mainly described. Explain in detail.

  As shown in FIG. 8, the positive electrode plate 7 and the negative electrode plate 8 have a structure in which bars having a semicircular cross section are bonded together. Here, the combined member is referred to as a charging rod 11, and this charging rod 11 is pivotally supported at the center, and the portion that comes into contact with the rotating brush 4 by rotating is the positive electrode plate 7, It is the structure which may be the negative electrode plate 8.

  As the rotating brush 4 rotates, the charging rod 11 receives a force at the contact portion and rotates. That is, when the positive electrode plate 7 is in contact with the rotating brush, the rotating brush is negatively charged, and when the negative electrode plate 8 is in contact with the rotating brush, the rotating brush is positively charged.

  In this way, the rotating brush repeats positive charging and negative charging alternately, so dust can be collected effectively regardless of whether the dust on the floor is positively charged or negatively charged. is there.

  However, the charging brush 11 needs to have a little resistance to rotation so as not to rotate freely. The rotating brush 4 rotates about 3000 rotations per minute, that is, 50 rotations per second, but the rotation of the charging rod 11 is preferably several rotations per second or less. This is because it takes time to charge to a voltage at which a dust collection effect can be expected. However, even if it takes too much time, it is not possible to follow the speed at which the suction nozzle 1 is moved during cleaning, so that it is necessary to reverse the polarity within 1-2 seconds.

  As described above, the suction nozzle for a vacuum cleaner and the vacuum cleaner using the same according to the present invention can improve the performance of removing dust from the floor surface, so that dust removing means for futons, furniture, building materials, industrial parts, etc. It can also be applied to.

The upper surface perspective view of the suction nozzle of the vacuum cleaner in Embodiment 1 of this invention Side perspective view of suction nozzle Upper surface perspective drawing of the suction nozzle of the vacuum cleaner in Embodiment 2 of the present invention Side perspective view of suction nozzle Same side perspective view of suction nozzle Side perspective view of the suction nozzle of the electric vacuum cleaner according to Embodiment 3 of the present invention Side perspective view of suction nozzle Side perspective view of the suction nozzle of the electric vacuum cleaner according to Embodiment 4 of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Suction nozzle 2 Flexible hose 3 Suction port 4 Rotating brush 5 Motor 6 Timing belt 7 Positive electrode plate 8 Negative electrode plate 9 Plate shaft 10 Rubber lip 11 Charging rod

Claims (7)

A rotating brush having a plurality of fibers, a positive electrode plate having a charging series on the positive electrode side, and a negative electrode plate having a charging series on the negative electrode side, wherein each of the positive electrode plate and the negative electrode plate is at least part of the fibers of the rotating brush. Vacuum cleaner suction nozzle provided so as to be able to come into contact with the tip of the vacuum cleaner. The suction nozzle for a vacuum cleaner according to claim 1, wherein the positive electrode plate and the negative electrode plate are alternately arranged one by one, or a plurality of each of them are arranged side by side in the direction of the rotation axis of the rotary brush. When the positive electrode plate is in contact with the fiber of the rotating brush, the negative electrode plate and the fiber of the rotating brush are not in contact, and when the negative electrode plate is in contact with the fiber of the rotating brush, the fiber of the positive electrode plate and the rotating brush The suction nozzle for a vacuum cleaner according to claim 1, wherein the positive electrode plate and the negative electrode plate are configured to be movable so as not to contact each other. When the positive electrode plate is in contact with the fiber of the rotating brush, the negative electrode plate and the fiber of the rotating brush are not in contact, and when the negative electrode plate is in contact with the fiber of the rotating brush, the fiber of the positive electrode plate and the rotating brush The vacuum cleaner suction nozzle according to claim 1, wherein the rotational axis position of the brush is configured to be movable so as not to come into contact. When the suction nozzle is moved forward with respect to the floor surface, the fiber of the rotating brush comes into contact with either the positive electrode plate or the negative electrode plate, and when the suction nozzle is moved backward with respect to the floor surface, the fiber of the rotating brush is The suction nozzle for a vacuum cleaner according to claim 3 or 4, wherein the suction nozzle is configured to come into contact with a plate different from the plate in contact with the forward movement. The shape of the positive electrode plate and the negative electrode plate is a rod shape having a substantially semicircular cross section, and the positive electrode plate and the negative electrode plate are bonded to each other to form a single rod-like positive and negative charging rod. The suction nozzle for a vacuum cleaner according to claim 1, wherein the axial direction of the rotary brush is arranged substantially parallel to the rotation axis of the rotary brush so as to be able to come into contact with the rotary nozzle. The vacuum cleaner using the suction nozzle for vacuum cleaners of any one of Claims 1-6.

Images