JP2015198856A - Suction tool of vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a rotary cleaning body to be used in a suction tool of a vacuum cleaner.SOLUTION: A rotary rotor body formed by inserting a cleaning body constituted by a columnar rotor and a cleaning brush to brush insertion holding grooves and a rotary cleaning body constituted by a bearing body are used in a suction tool of a vacuum cleaner. A distance from the rotation center axial core of the rotary cleaning body in the longitudinal direction to an upper left wall surface of a base holding groove being the helical shape upstream side of the brush insertion holding groove is shorter than a distance to an upper right wall surface of the base holding groove being the helical shape downstream side of the brush insertion holding groove. A distance to the lower left wall surface of the base holding groove being the helical shape upstream side of the brush insertion holding groove is shorter than a distance to the lower right wall surface of the base holding groove being the helical shape downstream side of the brush insertion holding groove.

Description

  The present invention relates to an improvement of a rotary cleaning body used for a suction tool of a vacuum cleaner.

  The vacuum cleaner suction tool is required to be able to efficiently clean the dust accumulated on the surface to be cleaned, that is, between the boards, tatami mats, carpets, etc., and has good assemblability, and therefore has a predetermined width. The rotor provided with a plurality of rows of linear insertion grooves on the outer periphery is twisted at a predetermined angle over the entire width, or the plurality of rows of insertion grooves are formed in a spiral shape, respectively, from the end of the rotor. The suction tool of the structure which rotates the rotary cleaning body assembled by inserting a cleaning brush in an insertion groove | channel by drive bodies, such as an electric motor, is disclosed. (For example, Patent Document 1 and Patent Document 2)

JP-A-61-154607 JP-A-7-178016

  In the above Patent Documents 1 and 2, although the rotor manufacturing method is different between injection molding and extrusion molding, a plurality of rows of spiral brush holding grooves formed along the axial length direction on the outer peripheral surface are both provided. Insert a cleaning body consisting of a base to which one end of the cleaning brush is fixed into the rotor, and push it from one end of each of the plurality of rows of brush holding grooves to the other end to form a rotating rotor body with good assembly. In addition, while cleaning the dust on the surface to be cleaned into the suction tool while rotating, efficient cleaning can be performed, and one of the cleaning brushes having a plurality of spirals is always on the surface to be cleaned. The contact has the advantage of reducing the contact sound with the surface to be cleaned and helping to reduce the noise, but the shape of the base and the brush holding groove are almost the same and are formed without gaps. , Stronger by brush holding groove When inserted while being spirally twisted, a large frictional force acts between the two, smooth insertion is impossible, and a large insertion force is required, and a lot of time is required until the insertion is completed. Therefore, a lot of labor is generated in the assembling property. Further, the base is required to have a hardness that does not bend during insertion, but if it is too hard, the base may not be twisted in a spiral shape, which causes problems such as difficulty in adjusting the hardness.

  In order to solve such a problem, it is necessary to form a wide gap between the base and the brush holding groove so as to be assembled with a small insertion force. In this case, as shown in FIG. As described above, the base 20 is also inclined due to the gap SK in the twisting direction T in which the rotor 8 is formed in a spiral shape in the brush holding groove 9, and is thus inclined with respect to the virtual rotation center axis C. The cleaning brush 21 also has an inclination angle K. Naturally, the greater the gap SK, the greater the inclination angle K. Thereby, as shown in FIG. 12, at the time of cleaning, only a part of the cleaning brush 21 is brought into rotational contact with the surface to be cleaned Z. There arise problems such as being forced to reduce the cleaning efficiency and requiring replacement with a new one. Further, as the spiral angle of the brush holding groove 9 formed in a spiral shape increases, a twisting force acts on the base 20 and the inclination angle K tends to increase. R indicates the direction of rotation of the rotating rotor body 23. HM indicates the height of the base holding groove 11, and H2 indicates the height of the base 20. The height HM of the base holding groove 11 is larger than the height H2 of the base 20, and the difference is defined as a gap SK. . In addition to the above, when the gap is widely formed between the base and the brush holding groove, in addition to the above, the cleaning body and the cleaning body are removed by the force applied to the cleaning body from the surface to be cleaned when the rotary rotor body rotates. Since the base is inclined toward the lower side in the rotational direction, as shown in FIG. 12, only a part of the cleaning brush 21 is in rotational contact with the surface to be cleaned Z during cleaning, and is used for a long time. In addition, there is a problem that only the contact portion is worn and there is a problem that the cleaning efficiency is inevitably lowered or a replacement work with a new one is necessary.

  In order to solve the above-mentioned conventional problems, the invention of claim 1 has a predetermined length, a plurality of rows at equal intervals on the outer periphery thereof, a convex shape comprising a brush bristle passage groove on the upper side and a base holding groove on the lower side. A cylindrical rotor in which the brush insertion holding groove is formed in a spiral shape from the end surface to the other end surface in the longitudinal direction, a base made of a semi-rigid material in the form of an elastic sheet, and perpendicular to the base A rotating rotor body formed by inserting a cleaning body composed of a large number of brush bristle bodies fixed at one end into the brush insertion holding groove, and rotating the rotating rotor body at both ends thereof In the suction tool for a vacuum cleaner using a rotary cleaning body composed of a bearing body that is freely supported, it is the upper spiral side of the brush insertion holding groove from the rotation center axis in the longitudinal direction of the rotary cleaning body. Distance to the upper left wall surface of the base holding groove Is smaller than the distance of the upper right wall surface of the base holding groove, which is the lower spiral side of the brush insertion holding groove, to the lower left wall surface of the base holding groove, which is the upper spiral side of the brush insertion holding groove. This distance is smaller than the distance of the lower right wall surface of the base holding groove, which is the lower spiral side of the brush insertion holding groove.

  The invention of claim 2 has a predetermined length, a plurality of rows at equal intervals on the outer periphery thereof, and a convex brush insertion holding groove comprising a brush bristle passage groove on the upper side and a base holding groove on the lower side. A cylindrical rotor formed spirally from the end surface to the other end surface, a base made of a semi-rigid material in the form of an elastic sheet, and a large number of brush hairs having one end fixed perpendicularly to the base Rotation comprising a rotating rotor body formed by inserting a cleaning body composed of an assembly cleaning brush into the brush insertion holding groove, and a bearing body for rotatably supporting the rotating rotor body at both ends thereof. In a vacuum cleaner suction tool using a cleaning body, a protrusion is provided on the upper left surface or the lower right surface of the base.

  According to the first aspect of the present invention, the distance from the rotation center axis in the longitudinal direction of the rotary cleaning body to the upper left wall surface of the base holding groove which is the spiral upper side of the brush insertion holding groove is defined as the spiral of the brush insertion holding groove. Smaller than the distance of the upper right wall surface of the base holding groove on the lower side of the shape, and further, the distance to the lower left wall surface of the base holding groove on the upper spiral side of the brush insertion holding groove is the brush insertion By making it smaller than the distance of the lower right wall surface of the base holding groove, which is the lower side of the spiral of the holding groove, the cleaning body is inclined upward to the right, that is, while having a gap above and below the base, It can be inserted into the brush insertion holding groove from its end face. If the insertion is continued, the cleaning body is forcibly twisted along the spiral shape while being gradually guided to the upper left wall surface and the lower right wall surface and being inhibited from tilting, and the insertion operation is completed. As a result, the cleaning body is held by the rotor perpendicular to the rotation center axis of the rotary cleaning body, so that the front end of the cleaning body is not inclined and the entire front end of the front end of the cleaning body is placed on the surface to be cleaned. The rotating contact makes it possible to sweep up dust that is heavy on the entire tip of the cleaning body as well as reducing wear and helping to prolong the service life. Further, by forming a left rib with a semicircular lower end on the upper left wall surface or a right rib with a semicircular upper end on the lower right wall surface, when the base is inserted, the contact resistance between the base and each of the ribs Can be reduced, the insertion force can be reduced, and damage to the upper left surface of the base due to contact resistance between the base and the upper left wall surface can be reduced. Furthermore, the cleaning brush and the base are inclined toward the lower side in the rotational direction by the force applied to the cleaning body from the surface to be cleaned when the rotating rotor body rotates. The distance from the shaft center to the upper left wall surface of the base holding groove that is the spiral upper side of the brush insertion holding groove is the distance from the upper right wall surface of the base holding groove that is the lower spiral side of the brush insertion holding groove. Further, the distance to the lower left wall surface of the base holding groove that is the spiral upper side of the brush insertion holding groove is smaller than the distance of the base holding groove that is the spiral lower side of the brush insertion holding groove. By making it smaller than the distance of the lower right wall surface, the cleaning body can be held straight in the circumferential direction of the rotation center axis in the longitudinal direction of the rotary cleaning body even during rotation.

  According to the second aspect of the present invention, the protrusion is provided on the left upper surface or the right lower surface of the base so that the base is gradually inserted into the spirally inserted brush insertion holding groove from its end surface. The protrusion formed on the upper right surface of the base that abuts the upper left wall surface of the base holding groove, which is the upper side of the brush insertion holding groove formed in a shape, inhibits twisting and prevents the cleaning body from tilting. it can. Further, by providing a protrusion on the lower right surface of the base, this protrusion comes into contact with the lower right wall surface of the base holding groove on the lower side of the brush insertion holding groove formed in a spiral shape. Twisting is inhibited, and the cleaning body is held by the rotor perpendicular to the rotational center axis of the rotary cleaning body. Of course, the protrusions may be provided on the upper left surface and the lower right surface of the base.

It is a front view of the rotary cleaning body which concerns on this invention. It is a partially cutaway perspective view of a rotor according to the present invention. FIG. 3 is a partially cutaway cross section AA in FIG. 2 according to the present invention. It is a side view of the cleaning body which concerns on this invention. It is a procedure figure of the principal part expansion which inserts the cleaning body which concerns on this invention in a rotor. It is a principal part expanded sectional view which shows the state which started inserting the cleaning body which concerns on this invention in a rotor. It is a principal part expanded sectional view which shows the state by which the cleaning body which concerns on this invention was hold | maintained at the rotor. It is the top view which opened the upper surface of the suction tool for vacuum cleaners which concerns on this invention. It is a principal part expanded sectional view which shows the state by which the cleaning body was hold | maintained at the rotor which shows the other Example 1 which concerns on this invention. It is a side view of the cleaning body which shows other Example 2 which concerns on this invention. It is a principal part expanded sectional view for description which shows the state by which the cleaning body in the prior art example was hold | maintained at the rotor. It is a principal part expanded sectional view for description which shows the state which the cleaning body in the prior art contacted the surface to be cleaned.

  Below, the structure of the suction tool for vacuum cleaners of one embodiment of this invention is demonstrated using FIG. 1 thru | or FIG.

  The suction tool 1 protrudes from the suction port 2 into a main body case 4 having a wide suction port 2 on the bottom surface on the front side and a connecting pipe 3 connected to an electric vacuum cleaner main body (not shown) in the center of the rear end. The rotary cleaning body 5 that sweeps the dust accumulated on the surface to be cleaned Z into the main body case 4 while rotating it, the drive body 6 composed of an electric motor that drives the rotary cleaning body 5 with a predetermined driving force, and the drive body A transmission body 7 including a gear (not shown) and a belt for transmitting the driving force 6 to the rotary cleaning body 5 at a predetermined rotational speed is housed.

  On the outer periphery of the substantially cylindrical rotor 8 having a predetermined length, four rows of convex brush insertion holding grooves 9 at equal intervals are provided spirally in the same shape over the entire width, from one end to multiple ends. The angle of twist T is about 90 degrees. The twisted T direction is from the left side to the right side in FIG. The brush insertion holding groove 9 is composed of a brush bristle passage groove 10 on the upper side and a base holding groove 11 on the lower side. The upper left wall surface 12 which is twisted in a spiral shape of the base holding groove 11 and is on the upper side in the T direction has a lower end half. The circular upper rib 13 is provided over the entire length, and the distance L1 from the rotation center axis C in the major axis direction of the rotor 8 to the lower end of the upper rib 13 is twisted spirally and is the lower right side in the T direction. It is smaller than the distance L2 to the wall surface 14. A lower rib 16 having a semicircular upper end is provided over the entire length of the lower right wall 15 that is twisted in a spiral shape of the base holding groove 11 and is the lower side of the T, so that the rotor 8 rotates in the major axis direction. A distance L12 from the center axis C to the upper end of the lower rib 16 is smaller than a distance L11 to the lower left wall surface 17 which is twisted in a spiral and is on the upper side of T. HM is the height dimension of the base holding groove 11, and is formed larger than the height dimension H2 of the base 20 described later. SK is a gap, which is a dimensional difference between the height HM of the base holding groove 11 and the height dimension H2 of the base 20. The cushion gap S is a dimensional difference between the distance L12 and the distance L11 and a dimensional difference between the distance L2 and the distance L1, and the dimensional difference is the same. That is, the gap SK is twice the cushion gap S.

  Reference numeral 18 denotes an elongated hole provided at the center of the rotor 8 over the entire width. C is a virtual center axis of rotation of the rotary cleaning body 5 in the major axis direction. The outer periphery of the substantially cylindrical rotor 8 is provided with four rows of convex brush insertion / holding grooves 9 at equal angles. However, it is not particularly limited. The cleaning body 19 is formed of a base 20 made of an elastic sheet and made of a semi-rigid material, and a cleaning brush 21 made of an assembly of a large number of brush hairs, one end of which is fixed perpendicularly to the base 20. Is done. The cleaning body 19 is inserted from the end surface of the brush insertion holding groove 9 to the other end surface, and both ends thereof are held by the side plate 22 and the brush insertion holding groove 9, respectively, and rotated by the cleaning body 19, the rotor 8 and the side plate 22. The rotor body 23 is configured.

  In addition, the height H2 dimension of the base 20 is formed to be substantially the same dimension as the dimension H1 of the dimension difference between the distance L1 and the distance L12. The bearing bodies 24 are provided on both sides of the rotating rotor body 23 and support the rotating rotor body 23 in a freely rotatable manner. The rotary cleaning body 5 includes a rotary rotor body 23 and a bearing body 24, and a transmission body 7 is provided as necessary. 4 indicates a direction in which the cleaning body 19 is forcibly twisted by the brush insertion holding groove 9 as the cleaning body 19 is inserted into the brush insertion holding groove 9, and this direction is the twisting direction of the brush insertion holding groove 9. Same as T. That is, the upper left side of the base 20 is strongly twisted and brought into contact with the upper rib 13 and the lower right side of the base 20 is brought into strong contact with the lower rib 16. Further, when the rotary rotor body 23 is rotated in the direction opposite to T1, the cleaning body 19 exerts a force that inclines in the rotation direction of T1 due to the force applied to the cleaning body 19 from the surface to be cleaned Z. Since the left upper surface of the base 20 is in contact with the upper rib 13 and the lower right surface of the base 20 is in contact with the lower rib 16, the cleaning body 19 can be held straight in the circumferential direction of the rotation center axis C.

  The present invention is configured as described above. When the cleaning body 19 is inserted and assembled from the end surface of the rotor 8, as shown in FIGS. By inserting it so that the right upper surface is inclined upward, there is a gap SK between the base 20 and the base holding groove 11, and there is little contact resistance, so that it can be smoothly inserted with a small insertion force. Can do. As the insertion proceeds, the base 20 is gradually twisted by the base holding groove 11 formed in a spiral shape. As shown in FIG. 7, the base 20 has an upper surface on the upper rib 13 and a lower surface on the lower rib. The twisting force is blocked by the upper rib 13 and the lower rib 16, and the cleaning body 19 is stored vertically with respect to the rotation center axis C of the rotor 8. In this state, the side plate 22, the bearing body 24, and the transmission body 7 are attached to constitute the rotary cleaning body 5 and accommodated in the suction tool 1. By operating the driving body 6 accommodated in the suction tool 1 on the surface to be cleaned Z, the rotary cleaning body 5 rotates, and the surface portion of the surface to be cleaned Z is in a substantially vertical state, that is, the cleaning brush 21. Dust can be swept up into the suction tool 1 while almost the entire surface of the tip end portion thereof is in rotational contact.

  Further, when the rotating cleaning body 5 is rotating, when an abnormal external force, that is, a force stronger than the force in which the base 20 is twisted and stored in the base holding groove 11 is applied to the cleaning body 19, for example, When the base 20 comes into contact with a step or the like such as a sill, the left side of the base 20 is lowered by the cushion gap S, so that the collision force due to the abnormal external force can be reduced, and the cleaning body 19 can be prevented from being deformed. Furthermore, as the height dimension HM of the base holding groove 11 is larger, the base 20 can be easily inserted into the base holding groove 11 at an angle, and for the rotor 8, if the brush insertion holding groove 9 becomes larger, the weight can be reduced. An effect is also produced, and the load on the driving body 6 is reduced. Of course, the cushion gap S is also increased, and deformation of the cleaning body 19 can be further prevented. The dimension H1 is a dimensional difference from the rotation center axis C to the upper rib 13 and the lower rib 16, but the shapes of the upper rib 13 and the lower rib 16 formed in a substantially semicircular shape, respectively, are as follows. The essential point is that the cleaning body 19 may be inserted into the brush insertion groove 9 in an oblique state without being limited thereto.

  Further, in the present invention, the upper left wall surface 12 is provided with an upper rib 13 having a semicircular lower end, and the lower right wall surface 15 is provided with a lower rib 16 having a semicircular upper end over the entire length of the rotor 8. However, when a hard material such as hard resin is used as the material of the base 20, when the base 20 is inserted into the base holding groove 11 twisted in the twisting direction T, the base 20 is The rotor 8 is pressed while being gradually changed from the upper left part to the upper right part of the base 20 with the substantially central part of the entire length of the rotor 8 as a boundary. In this case, the formation of the upper rib 13 and the lower rib 16 is reversed at the substantially central portion of the entire length of the rotor 8, in other words, the upper rib 13 is located at the upper right with the substantially central portion of the rotor 8 as a boundary. The form which forms a wall surface and the lower rib 16 in a lower left wall surface is also employable. Further, when a hard material such as a hard resin is used as the material of the base 20, as another form, twists are applied in opposite directions with respect to the substantially central portion of the entire length of the rotor 8, and the upper left Even if a configuration in which the upper rib 13 is provided on the wall surface 12 and the lower rib 16 is provided on the lower right wall surface 15 over the entire length of the rotor 8 has the same effect as the above configuration, as shown in FIG. The rotor 8 is stored vertically with respect to the rotation center axis C of the rotor 8.

  FIG. 9 is a main part enlarged cross-sectional view showing another embodiment 1 relating to the present invention and showing a state in which the cleaning body 19 is held by the rotor 81. On the outer periphery of the rotor 81, a convex brush insertion holding groove 91 is spirally provided in the same shape over the entire width, and the angle of twist T from one end to the other end is about 90 degrees. The direction of twist T is from left to right in FIG. The brush insertion holding groove 91 includes a brush bristle passing groove 101 on the upper side and a base holding groove 111 on the lower side. The upper right end wall 151 is twisted in a spiral shape of the base holding groove 111 and is on the lower side in the T direction. A semicircular lower rib 161 is provided over the entire length. HM is the height dimension of the base holding groove 111. In this state, when the cleaning body 19 is obliquely inserted into the brush insertion holding groove 91 and is gradually pushed in, the base 20 is also gradually twisted, but the lower rib 161 inhibits the twist, and the cleaning body 19 is accommodated perpendicularly to the rotation center axis C without being inclined. That is, even if the lower rib 161 is provided in the base holding groove 111, it has the same effect as the present invention.

  FIG. 10 shows another embodiment 2 relating to the present invention. By providing a base upper rib 211 on the upper left surface of the base 201 constituting the cleaning body 191 and a base lower rib 212 on the lower right surface, respectively. The same effect as that of the present invention can be obtained without providing the upper rib 13 and the lower rib 16 in the table holding groove 11. Of course, if only the base lower rib 212 is provided on the base 201, the same effects as those of the first embodiment according to the present invention can be obtained. It should be noted that various embodiments can be employed without departing from the spirit of the present invention.

  The suction tool for an electric vacuum cleaner of the present invention can be used widely and suitably as a rotary cleaning body for sweeping up dust on a surface to be cleaned while rotating.

DESCRIPTION OF SYMBOLS 1 Suction tool 2 Suction port 3 Connection pipe 4 Main body case 5 Rotating cleaning body 6 Drive body 7 Transmission body 8,81 Rotor 9,91 Brush insertion holding groove 10,101 Brush bristle passage groove 11,111 Base holding groove 12 Upper left wall surface 13 Upper rib 14 Upper right wall surface 15, 151 Lower right wall surface 16, 161 Lower rib 17 Lower left wall surface 18 Long hole 19, 191 Cleaning body 20, 201 Base 21 Cleaning brush 22 Side plate 23 Rotating rotor body 24 Bearing body 211 Base upper rib 212 Base lower rib C Rotation center axis K Inclination angle H1, HM Base holding groove height dimension H2 Base height dimension L1 Distance from rotation center axis C to lower end of upper rib 13 L2 Rotation center axis Distance from core C to upper right wall surface 14 L11 Distance from rotation center axis C to lower left wall surface L12 Distance from rotation center axis C to the upper end of lower rib 16 Clearance cushion SK clearance T, T1 twist direction Z surface to be cleaned

Claims (2)

  A convex brush insertion holding groove having a predetermined length, a plurality of rows at equal intervals on the outer periphery, a brush bristle passage groove on the upper side, and a base holding groove on the lower side, between the longitudinal end surface and the other end surface. A cylindrical rotor formed in a spiral shape, a base made of a semi-rigid material in the form of an elastic sheet, and a cleaning brush made of an assembly of a large number of brush bristles perpendicularly fixed to the base A vacuum cleaner using a rotary cleaning body comprising a rotary rotor body formed by inserting a cleaning body constituted by the brush insertion holding groove, and a bearing body that rotatably supports the rotary rotor body at both ends thereof The distance from the rotational center axis in the longitudinal direction of the rotary cleaning body to the upper left wall surface of the base holding groove which is the spiral upper side of the brush insertion holding groove is the brush insertion holding Before the spiral inferior side of the groove The distance to the lower left wall surface of the base holding groove, which is smaller than the distance of the upper right wall surface of the base holding groove and is the spiral upper side of the brush insertion holding groove, is on the lower spiral side of the brush insertion holding groove. A suction tool for a vacuum cleaner, wherein the suction tool is smaller than a distance of a lower right wall surface of the base holding groove.   A convex brush insertion holding groove having a predetermined length, a plurality of rows at equal intervals on the outer periphery, a brush bristle passage groove on the upper side, and a base holding groove on the lower side, between the longitudinal end surface and the other end surface. A cylindrical rotor formed in a spiral shape, a base made of a semi-rigid material in the form of an elastic sheet, and a cleaning brush made of an assembly of a large number of brush bristles perpendicularly fixed to the base A vacuum cleaner using a rotary cleaning body comprising a rotary rotor body formed by inserting a cleaning body constituted by the brush insertion holding groove, and a bearing body that rotatably supports the rotary rotor body at both ends thereof A suction tool for a vacuum cleaner, wherein a convex portion is provided on a left upper surface or a right lower surface of the base.

Images