JP2010110344A - Electric vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric vacuum cleaner capable of changing a direction of a suction port portion to a desired changing direction, to solve the problem that it is possible to reduce the effort upon operating a suction port portion forward or backward, since the suction port portion propels itself during cleaning in an electric vacuum cleaner equipped with a driving motor in the suction port portion, but it takes an effort to change the direction of the suction port portion in the right and left direction. <P>SOLUTION: A rotary brush unit 2 inside the suction port portion 1 of the electric vacuum cleaner includes two right and left rotary shaft bodies 2A and 2B, and the rotation speeds of the respective rotary shaft bodies 2A and 2B can be changed, respectively. With such a configuration, since it is possible to change a self-propelling direction of the suction port portion to the right and left direction in addition to the forward direction, it is possible to remarkably reduce the effort involved in an operation of changing the direction of the suction port portion. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to reducing labor in changing the direction of a suction tool left and right in a vacuum cleaner having a suction tool and a handle.

This type of conventional vacuum cleaner has a high dust collection performance on the floor surface, particularly on the carpet surface, by scraping with a rotating brush. However, since the motor for driving the rotating brush is mounted inside, the suction port tends to be heavy, and there is a demerit that the cleaning operation becomes tired. In order to improve this demerit, it is necessary to provide a self-propelled roller at the suction port, or to impart self-propelled property by positively applying the rotating brush itself to the floor surface (for example, see Patent Document 1). ).
Japanese Patent Laid-Open No. 2-7923

  However, in the above method, labor is reduced when operating the suction port part back and forth, but when changing the suction port part to the left and right, it is necessary to twist the wrist to change the direction of the suction port part. The effort is not reduced. In particular, in the upright type vacuum cleaner having a configuration in which the suction port portion is heavy, labor for changing the direction of the suction port portion is considerably burdensome. The frequency of changing the direction of the suction port during actual cleaning is considerably high, and especially at this time, a large burden is placed on the wrist.

  In order to solve the above-mentioned problem, the present invention divides the rotating brush of the suction port into two left and right parts, and the rotating brush on the opposite side to the direction to change direction rotates more strongly than the opposite brush, so that the suction port is It becomes possible to change direction to the direction you want to change direction.

  According to the vacuum cleaner of the present invention, in addition to the suction port part running forward and backward during cleaning, the suction port part changes direction in the specified direction even when the suction port part changes direction from side to side. The burden during cleaning is greatly reduced, and cleaning work, which is a relatively heavy labor in housework, can be made easier.

  A first aspect of the present invention is a vacuum cleaner main body portion incorporating an electric blower that generates suction air, a suction port portion that sucks dust together with the suction air, a handle portion for moving the suction port portion, and the suction A rotary brush unit having two brush shafts provided in the mouth and connected in series; and a rotary brush drive unit for independently rotating each of the rotary shaft bodies; In the vacuum cleaner which made the said suction inlet part self-propelled by rotation of this, the vacuum cleaner comprised so that the direction of the said suction inlet part could be changed by producing the difference in the rotational speed of the said two rotating shaft bodies By doing so, it is possible to reduce the burden on the arm and wrist when the suction port is turned to the left and right.

  In the second invention, in particular, the drive motor is disposed inside each of the two rotating shaft bodies in the first invention, and the drive motor is a rotating brush drive unit, so that the suction port can be downsized. In addition, the suction port portion can be easily routed in a narrow place, and the rotary brush unit can be formed over almost the entire width of the suction port portion, so that the cleaning performance near the wall is improved.

  According to a third aspect of the present invention, there is provided a switch lever portion that can be operated left and right particularly in the handle portion according to the first or second aspect of the invention, and the rotary brush so that the suction port portion can change the direction in which the switch lever portion is operated. By controlling the rotation of the two rotating shafts of the unit, it is possible to change the direction of the suction port only with the fingertip without performing a large operation such as twisting or tilting the handle.

  According to a fourth aspect of the present invention, the two rotating shaft bodies of the rotary brush unit can be turned in the direction in which the suction port portion is twisted by twisting the handle portion in the first or second invention to the left or right. By controlling the rotation, the self-running direction of the suction port can be changed with the same operation feeling as a normal vacuum cleaner with a swing mechanism.

  In the fifth aspect of the invention, in particular, since the hardness of the brush in the vicinity of both ends of the rotating brush unit in the first to fourth aspects of the invention is made harder than that in the vicinity of the center, the direction changing force of the suction port increases, A self-propelled direction can be changed even on a floor with high resistance.

  In the sixth invention, in particular, the outer diameter of the rotary shaft of the rotary brush unit in the first to fifth inventions is made larger near the both ends than near the center, and the length of the brush near both ends is made shorter than near the center. The outer diameter of the brush tip is almost the same in the vicinity of both the center and both ends, which increases the direction change force of the suction port, and can change the direction of self-running even on floors with high sliding resistance such as deep carpets. In addition, since the brush tip outer diameter is constant, the contact with the floor surface is uniform, and uniform suction performance and self-running performance can be obtained over the entire width of the rotating brush unit.

  In the seventh aspect of the invention, in particular, by making the length of the brush near both ends of the rotating brush unit in the first to fourth aspects longer than the vicinity of the center, the direction changing force of the suction port portion is increased, and a deep carpet, etc. In addition to being able to change the direction of self-running even on a floor surface with high resistance, the distance from the center position of the brush mounting portion is constant, so that hair transplantation by an automatic machine becomes easy.

  According to the eighth aspect of the invention, the brush of the rotating shaft body in the first to fourth aspects of the invention is formed in a comb-like shape, and the pitch interval of the brush bundle near the both ends of the rotating brush unit is made denser than the vicinity of the center. In addition to increasing the direction change force of the suction port, it is possible to change the direction of self-running even on a highly resistant floor surface such as a deep carpet, etc. In addition, the type, hardness, and length of the brush hair over the entire width of the rotary brush unit Productivity improves because it can be kept constant.

  In the ninth aspect of the invention, in particular, by increasing the number of brushes in the vicinity of both ends of the rotary brush unit in the first to fourth aspects of the invention from the vicinity of the center, the direction changing force of the suction port is increased, and a deep carpet, etc. In addition to being able to change the direction of self-running even on a floor surface with high resistance, productivity is improved because the type, hardness, length, and flocking pitch of the brush hair can be made constant over the entire width of the rotating brush unit.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 and FIG. 2 show Embodiment 1 of the present invention. FIG. 1 is a partial sectional view of the suction port 1 as seen from the bottom, and FIG. 2 is a vacuum cleaner equipped with the same. The rotating brush unit 2 provided inside the suction port 1 is composed of two rotating shaft bodies 2A and 2B. A brush 3 is formed on the surfaces of the rotary shaft bodies 2A and 2B.

In FIG. 1, the brush 3 is a so-called flocking brush in which bristles are bundled and planted inside the hole. However, a brush having an undercut is also formed, and a narrow raised cloth is inserted and fixed in this groove. Or a glued brush may be used. A drive motor 4 and a reduction gear 5 are provided inside each of the rotary shaft bodies 2A and 2B. The drive motor 4 is connected to the reduction gear 5, and the output shaft of the reduction gear 5 is the rotary shaft bodies 2A and 2B. Since the drive motor 4 rotates, the rotary shaft bodies 2A and 2B located on the outer periphery thereof rotate.

  In this way, by arranging the drive motor 4 and the reduction gear 5 inside the rotary shaft bodies 2A and 2B, the rotation mechanism portion is completed only by the rotary brush unit 2, and the drive motor or the like is provided inside the suction port portion 1 or the like. Therefore, it is possible to make the suction port portion 1 small, that is, to realize the suction port portion 1 having a small turning and good operability and the small and light vacuum cleaner main body portion 12. It becomes possible.

  Since the brush 3 is dimensioned so as to be somewhat in contact with the floor surface, the rotary shaft bodies 2A, 2B rotate in a direction (forward direction) in which the suction port portion 1 is pushed forward. It is self-propelled and the operability of the vacuum cleaner body 12 is reduced.

  Further, since the rotary shafts 2A and 2B are rotated by the independent drive motors 4, the respective rotation speeds can be changed. If the right drive motor is rotated faster than the left side or only the right side is rotated, the suction port 1 will turn to the left, and if the left motor is rotated faster than the right side or only the left side is rotated, the suction port portion 1 turns to the right.

  It is also possible to change the direction of the suction port 1 more strongly by rotating the motor in the direction to bend in the reverse direction and rotating the opposite side in the forward direction.

  A switch lever portion 10 is attached on the handle portion 11. The switch lever portion 10 is attached to a position where the switch portion 10 can be operated with a finger when the handle portion 11 is grasped by a hand. When the switch lever part 10 is tilted left and right, the drive motors in the rotary shafts 2A and 2B are connected via electric control means (not shown) so that the suction port part 1 changes its direction in the direction in which the switch lever part 10 is tilted. 4 is controlled.

(Embodiment 2)
FIG. 3 is an overall view of the electric vacuum cleaner according to Embodiment 2 of the present invention. The handle portion 11 is twisted to the left and right, and two rotation shafts provided in the rotary brush unit 2 inside the suction port portion 1 so that the direction of the suction port portion 1 is changed in the direction in which the handle portion 11 is twisted. The rotational speeds of the bodies 2A and 2B are controlled via electrical control means (not shown). If the torsion amount is large, the rotational speed difference between the rotating shaft bodies 2A and 2B also increases accordingly, and the turning amount increases.

(Embodiment 3)
FIG. 4 shows the rotating brush unit 2 in the suction port 1 according to Embodiment 3 of the present invention. The rotating brush unit 2 includes rotating shaft bodies 2A and 2B, and the rotating shaft bodies 2A and 2B are rotatably connected by a connecting portion 30 to absorb the rotational speed difference between the rotating shaft bodies 2A and 2B. Brushes 3 are attached to the surfaces of the rotary shafts 2 </ b> A and 2 </ b> B. The brushes 3 attached to the fixed range 101 at both ends of the rotary brush unit 2 are attached to the fixed range 102 at the center of the hard brush and the rotary brush unit 2. The brush 3 is a soft brush. By adopting such a configuration, a large self-propelling force is generated at a portion far from the turning center, so that the suction port portion 1 can turn more efficiently.

(Embodiment 4)
FIG. 5 shows the rotating brush unit 2 in the suction port 1 according to Embodiment 4 of the present invention. The rotating shafts 2A, 2B constituting the rotating brush unit 2 have a small outer diameter in the range 110 near the center of the rotating brush unit 2, and the outer diameter increases as they extend in the direction of each end at both ends. As a result, as the outer diameters of the rotating shafts 2A and 2B increase, the length of the brush 3 to be attached becomes shorter, and the outer diameter of the brush 3 at the bristle position is substantially constant over the entire width of the rotating brush unit 2. Since the brush is less likely to fall due to the shortened brush length, it is possible to increase the self-propelled force at both ends of the rotating brush unit 2 even if the same material brush is used, and the suction port 1 is more efficient. You can turn.

(Embodiment 5)
FIG. 6 shows the rotating brush unit 2 in the suction port 1 according to the fifth embodiment of the present invention. The brush 3 is attached to the surface of the rotating shaft bodies 2A and 2B constituting the rotating brush unit 2, and the length of the brush 3 is short in the range 110 near the center of the rotating brush unit 2, and each end portion at both ends. By changing the length of the rotating brush unit 2 as it spreads in the direction, the brushes 3 at both end portions of the rotating brush unit 2 strongly hit the floor surface, and a large self-propelling force is generated. Therefore, the suction port 1 can be turned more efficiently. .

(Embodiment 6)
FIG. 7 shows the rotating brush unit 2 in the suction port 1 according to Embodiment 6 of the present invention. Brushes 3 are attached to the surfaces of the rotary shafts 2A and 2B constituting the rotary brush unit 2, and the pitch between the brushes 3 attached to a certain range at both ends of the rotary brush unit 2 is narrow, and the dense portion 120 of the brush 3. In the range near the center, the pitch is wide and the sparse part 121 of the brush 3 is used. Thereby, since big self-propelling force generate | occur | produces in the both ends of the rotating brush unit 2, the suction inlet part 1 can turn more efficiently.

(Embodiment 7)
FIG. 8 shows the rotating brush unit 2 in the suction port 1 according to the seventh embodiment of the present invention. Brushes 3 are attached to the surfaces of the rotary shaft bodies 2A and 2B constituting the rotary brush unit 2, and the brushes 3 attached to a predetermined range at both ends of the rotary brush unit 2 are attached by four strip portions 130, and in the vicinity of the center. In the range of (2), it is attached at the two-row portion 131. As a result, a large self-propelled force is generated at both end portions of the rotating brush unit 2, so that the suction port portion 1 turns more efficiently.

  As described above, the vacuum cleaner according to the present invention changes the self-running direction of the suction port, so that it is possible to greatly reduce the labor of the user when changing the direction. The effect is particularly great in a vacuum cleaner with a large mass such as an upright type vacuum cleaner. For this reason, even elderly people, women, and children can easily clean, and fatigue can be suppressed even after long-time cleaning. Further, it is possible to reduce the labor required for cleaning regardless of the age / sex of the user or the classification for home use or business use.

Partial sectional view of a suction port portion in Embodiment 1 of the present invention Whole perspective view of the cleaner body in the same embodiment Whole perspective view of the cleaner body in Embodiment 2 of the present invention Plan view of rotating brush unit according to Embodiment 3 of the present invention The top view of the rotating brush unit in Embodiment 4 of this invention Plan view of rotating brush unit according to Embodiment 5 of the present invention The top view of the rotating brush unit in Embodiment 6 of this invention The top view of the rotating brush unit in Embodiment 7 of this invention

Explanation of symbols

1 Suction Port 2 Rotating Brush Unit 2A Rotating Shaft A
2B Rotating shaft body B
DESCRIPTION OF SYMBOLS 3 Brush 4 Drive motor 5 Reduction gear 10 Switch lever part 11 Handle part 12 Vacuum cleaner main body part 30 Connection part 101 The fixed range of both ends 102 The fixed range of the center 110 The range of the vicinity of the center 120 The dense part 121 The sparse part 130 The four parts 131 Section 2

Claims (9)

A vacuum cleaner main body that houses an electric blower that generates suction air, a suction port that sucks dust together with the suction air, a handle for moving the suction port, and an interior of the suction port. A rotary brush unit in which two rotary shaft bodies each having a brush are connected in series; and a rotary brush drive unit that rotates each of the rotary shaft bodies independently. The vacuum cleaner which made the part self-propelled, The vacuum cleaner comprised so that the direction of the said suction inlet part could be changed by producing a difference in the rotational speed of the said two rotating shaft body. The electric vacuum cleaner according to claim 1, wherein a drive motor is disposed inside each of the two rotary shaft bodies, and the drive motor is a rotary brush drive unit. A switch lever portion that can be operated left and right is provided on the handle portion, and the rotation of the two rotary shaft bodies of the rotary brush unit is controlled so that the suction port portion can change direction in the direction in which the switch lever portion is operated. 2. The vacuum cleaner according to 2. The electric vacuum cleaner according to claim 1 or 2, wherein the rotation of the two rotary shaft bodies of the rotary brush unit is controlled so that the direction of the suction port can be changed by twisting the handle part to the left and right. The vacuum cleaner according to any one of claims 1 to 4, wherein the hardness of the brush near both ends of the rotating brush unit is harder than that near the center. The outer diameter of the rotating shaft of the rotating brush unit is made larger near the both ends than near the center, and the length of the brush near both ends is made shorter than near the center. The vacuum cleaner according to any one of claims 1 to 5, which has the same diameter. The vacuum cleaner according to any one of claims 1 to 4, wherein the length of the brush near both ends of the rotating brush unit is longer than that near the center. The electric vacuum cleaner according to any one of claims 1 to 4, wherein the brush of the rotating shaft body is formed in a comb-like shape, and the pitch interval of the brush bundle near both ends of the rotating brush unit is made denser than that near the center. The vacuum cleaner according to any one of claims 1 to 4, wherein the number of brushes in the vicinity of both ends of the rotating brush unit is increased from that in the vicinity of the center.

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