JP5199767B2 - Cleaning tool - Google Patents

Description

  The present invention relates to a cleaning tool that is suitably used when cleaning floor surfaces such as carpets and flooring in a residence, and in particular, rotates while contacting a surface to be cleaned to scrape dust and the like on the surface to be cleaned. The present invention relates to a manual cleaning tool to be removed.

Conventionally, as a manual cleaning tool for cleaning a floor surface mainly composed of a carpet, it is provided with a drive wheel that rotates in contact with the surface to be cleaned and a roll-like brush that rotates in conjunction with the drive wheel. There is known a rotary brush type cleaning tool in which dust and the like on a surface to be cleaned are scraped up and removed by a brush that performs cleaning (see Patent Documents 1 to 3).
However, there are many types of carpets, such as those with long or short hairs, or patterns with irregularities on the surface, and conventional rotary brush type cleaning tools have long hairs. In the case of things or carpets with irregularities on the surface, the brush and other parts are subject to great resistance when moving the cleaning tool, or they can get caught and not be cleaned smoothly, or the body may come into contact with the carpet. In some cases, the drive wheels do not rotate, resulting in insufficient scraping.

JP-A-63-111831 JP 2004-81810 A Japanese Patent No. 1-262827

  Therefore, the object of the present invention is to move smoothly regardless of the surface state of the surface to be cleaned, and is excellent in operability, and the scraping roll body rotates reliably to obtain excellent cleaning performance. It is to provide a cleaning tool.

The present invention includes a drive wheel that rotates by an operating force applied to a cleaning tool, a scraping roll body that rotates by a rotational force obtained from the drive wheel and scrapes up a cleaning target on a surface to be cleaned, and the scraping A swing body that supports the roll body and displaces the rotational axis height position of the scraping roll body up and down with respect to the rotational axis height position of the drive wheel, and a cleaning object that is scraped up by the scraping roll body The object is achieved by providing a cleaning tool including a removal object storage portion for storing a cleaning means, and having a guide means for maintaining a constant contact state between the scraping roll body and the surface to be cleaned. It is.

  The cleaning tool of the present invention can be smoothly moved regardless of the surface state of the surface to be cleaned, is excellent in operability, and the cleaning roll body is reliably rotated to obtain excellent cleaning performance.

Hereinafter, the present invention will be described based on preferred embodiments thereof.
As shown in FIGS. 1 to 4, the cleaning tool 1 of the present embodiment is rotated by driving wheels 2 and 2 that are rotated by an operating force applied to the cleaning tool, and a rotational force obtained from the driving wheels 2 and 2. The scraping roll body 3 that scrapes up the object to be cleaned on the surface to be cleaned, and the scraping roll body 3, and the rotational axis height position of the scraping roll body 3 is the rotational axis height position of the drive wheels 2 and 2. A swing body 4 that is displaced up and down, and a removed object storage portion 5 that stores a cleaning object scraped up by the scraping roll body 3, and the contact state between the scraping roll body 3 and the surface to be cleaned is It has guide means 6 to keep it constant.

  The cleaning tool 1 of the present embodiment is used for cleaning a floor surface mainly made of a carpet. The surface to be cleaned when the carpet is cleaned is the surface of the carpet on which a large number of hairs are present.

The drive wheels 2 and 2 in the cleaning tool 1 are rotatably supported by a main body 7 having an operation base (attachment part) 72 to which an operation part 71 for cleaning tool operation can be attached.
The main body 7 has a narrow plate-like back surface portion 73 that is long in the same direction as the axial length direction (the left-right direction in FIG. 1) of the scraping roll body 3, and substantially from the both ends in the longitudinal direction of the back surface portion 73 toward the front. It has the axis | shaft holding | maintenance part 74 and 74 extended perpendicularly | vertically. The operation base 72 described above protrudes from the central portion in the longitudinal direction of the back surface portion 73, and a rod-like operation portion 71 can be detachably attached to the operation base 72. FIG. 1 shows a state in which the operation unit 71 is attached to the operation base 72.
The operation base portion 72 in the present embodiment functions as an attachment portion and has a function of increasing the substantial length of the operation portion 71.
Note that the operation base 72 can be directly gripped by hand, or the gripping portion 75 can be directly connected to the operation base 72 to provide a so-called handy type cleaning tool. In an embodiment in which the operation base 72 is directly gripped and used manually, the operation base 72 itself is an operation unit.

  The operation unit 71 shown in FIG. 1 has a grip portion 75 that is gripped by a person performing a cleaning operation near one end portion, and the length thereof can be adjusted. Various known mechanisms can be adopted as a mechanism for detachably attaching the operation unit 71 to the operation base 72. Various known methods can be adopted as a method for adjusting the length of the operation unit 71. For example, a mechanism that can fix the state after appropriately changing the degree of insertion of the inner cylinder with respect to the outer cylinder. There are methods such as adoption, a method of adding a number of rods arbitrarily selected from a plurality of rods. The attachment portion for attaching the operation portion to the main body is not limited to the protruding portion like the operation base portion 72, and may be a screw hole provided in the back portion or the like of the main body.

  As shown in FIG. 3, the drive wheels 2 and 2 in the cleaning tool 1 are such that the boss portion 23 of the drive wheel 2 is rotatably supported by the shaft holding portion 74. In this embodiment, as shown in FIG. 3, the boss portion 23 has a cylindrical shape having a narrow-diameter portion 230 having a constant width, and the thin-diameter portion 230 is connected to the shaft so that the drive wheel 2 can rotate. The holding portion 74 is fitted into the notch 740. The small-diameter portion 230 and the notch portion 740 may be directly rotated and slid, or the drive wheel 2 may be rotatable via a bearing. Conventional techniques such as a stopper are appropriately applied to the inner peripheral surface or end surface of the cutout portion 740 so that the small diameter portion 230 does not come out. Further, the shaft body 21 is inserted into the shaft body insertion hole 235 of the boss portion 23 of the drive wheel 2, and a shaft fixing set bolt (hexagon socket set screw) or a shaft body insertion hole 235, which has been conventionally used, It is fixed by fitting. A first gear 22 is fixed in the longitudinal direction of the shaft body 21 on the opposite side of the boss portion 23 by a conventional technique. In the present embodiment, the shaft body 21 passes through the side surface of the swing body 4 and is attached to the swing body 4 so as to be rotatable and slidable by an inner surface of the side surface and a fixture such as a C-shaped ring.

The swing body 4 is connected to the main body 7 so that the angle with respect to the main body 7 can be changed according to the surface state of the surface to be cleaned.
More specifically, the swing body 4 is positioned between the shaft holding portions 74 and 74 of the main body 7, and one shaft body 21 </ b> A passes through one side wall 45 </ b> A of the swing body 4. Further, the other shaft body 21B penetrates the other side wall 45B of the swing body 4, and the one shaft body 21A and the other shaft body 21B are attached to the swing body 4 as separate bodies. The swing body 4 is connected to the main body 7 via a shaft body 21 that is also a rotation shaft of the drive wheel 2 and a boss portion 23, and is rotatable (swing operation is possible) about the shaft body 21 as a central axis. Yes. As described above, the swing body 4 is rotatable about the shaft body 21 as a rotation axis, so that the relative angle with respect to the main body 7 can be freely changed according to the surface state of the surface to be cleaned. Further, since the shaft body 21 is rotatable about the center axis, the rotational axis height position of the scraping roll body 3 held at a position separated from the shaft body 21 of the swing body 4 is It is displaced up and down with respect to the rotational axis height position. Here, the rotational axis height refers to the distance between the surface to be cleaned and the center of each axis in the direction perpendicular to the surface to be cleaned.

  As shown in FIG. 4, the swing body 4 in the present embodiment includes a holding unit 41 of the scraping roll body 3 and a removed object storage section 5 that stores a cleaning object scraped up by the scraping roll body 3. It has an integrated configuration. The swing body 4 has an upper wall portion 43, a lower wall portion 44, and left and right side wall portions 45, 45, and the scraping roll body 3 has an upper wall portion 43, a lower wall in the front portion 4 </ b> A of the swing body 4. In the space surrounded by the wall 44 and the left and right side walls 45, 45, the shaft body 31 is held in a state of being rotatably supported. In the space surrounded by the upper wall portion 43, the lower wall portion 44, and the left and right side wall portions 45, 45 in the rear portion 4B of the swing body 4, a surface facing the scraping roll body 3 among the six surfaces of the hexahedron is provided. The opened box-like body 46 is detachably fitted, and the inside of the box-like body 46 serves as the removed matter accommodating portion 5. Inside the removed object storage unit 5, a cleaning object scraped up by the lifting roll body 3 is stored.

  As shown in FIG. 4, the lower wall portion 44 in the front portion 4 </ b> A of the swing body 4 has an arcuate cross-sectional shape along the outer peripheral surface of the scraping roll body 3, and cleaning performed by the scraping roll body 3 being scraped up. The object is smoothly guided to the removed object storage unit 5. In addition, a step 47 is formed in the lower wall portion 44 between the holding portion 41 of the swing body 4 and the removed matter storage portion 5 to prevent the cleaning object G accommodated in the removed matter accommodation portion 5 from reversing. Has been.

  The scraping roll body 3 in the cleaning tool 1 of the present embodiment is a rotating brush, and has a brush portion 32 around a cylindrical shaft body 31. In the brush portion 32, animal hair such as pig hair or hair made of synthetic resin or the like is radially planted on a shaft member 31 or a cylindrical member (not shown) fixed coaxially around the shaft member 31. Become. The shaft body 31 projects from both ends of the scraping roll body 3, and the projecting shaft body 31 penetrates the side wall 45 of the swing body 4. As shown in FIG. 5, the second gear 33 is fixed to a portion of the shaft body 31 that protrudes outside from the side wall portion 45. The shaft body 31 is supported by the through-hole (not shown) provided in the side wall portion 45 between the scraping roll body 3 and the second gear 33 together with the scraping roll body 3 and the second gear 33. Rotates integrally.

  On both the left and right sides of the swing body 4, the first gear 22 and the second gear 33 rotate in conjunction with each other via a third gear 48 that meshes with both gears, as shown in FIG. The first gear 22, the second gear 33, and the third gear 48 are accommodated in gear boxes 49 formed on both sides of the swing body 4. The gear box 49 is surrounded by each side wall portion 45 in the rear portion 4B of the swing body 4, a peripheral wall portion 49a formed integrally with each side wall portion 45, and a lid portion 49b fitted to the opening peripheral edge portion of the peripheral wall portion 49a. It is formed as a space. A through hole through which the shaft body 21 of the first gear 22 and the shaft body 31 of the second gear 33 pass is formed in the side wall portion 45 and the lid portion 49b. In addition, both ends of a shaft body 48a serving as a rotation shaft of the third gear 48 are rotatably fixed to the side wall portion 45 and the lid portion 49b.

The cleaning tool 1 of the present embodiment is provided with a guide arm 62 (guide portion) having a sled portion 61 that is lifted upward as it goes forward as the guide means 6. As shown in FIG. 6, the guide arm 62 is fixed to the lower portion of the outer surface of the side wall 45 of the swing body 4, and has a sled portion 61 at the front end that is the end on the non-fixed side. 6 (a) and 6 (b) show the guide arm 62 fixed to the swing body 4. FIGS. 6 (c) to 6 (e) show the guide arm 62 before being fixed to the swing body 4. FIG. Or the guide arm 62 of the state removed from the swing body is shown. As shown in FIG. 6, the guide arm 62 includes a warped portion 61 having a lower surface having an arcuate cross section and a flat rear portion 63 having a flat lower surface.
The guide arm 62 (guide means) preferably has the above-described warp portion 61 in front of the lower portion of the scraping roll body 3. The lower front of the scraping roll body 3 is a portion located below the center line position of the rotation axis of the scraping roll body 3 and located forward of the traveling direction (left direction in FIG. 4) from the center line. is there. The area of the flat rear portion 63 is such that when the cleaning tool 1 of the present embodiment is used, the swing body 4 receives torque generated by the rotation of the drive wheel 2 and the scraping roll body 3 sinks deeply into the surface to be cleaned S. It is preferable to make it a size that can prevent this.

The guide arm 62 in this embodiment can adjust the attachment angle with respect to the swing body 4. More specifically, the guide arm 62 can be rotated using the first protrusion 64 protruding from the side wall portion 45 as a rotation axis. The pivotable range is from the position (see FIG. 6A) where the bolt part 66 projecting from the side wall part 45 is located at one end of the arc-shaped long hole 65 to the other end of the long hole 65. The range up to a position (see FIG. 6B) where the bolt portion 66 is to be located. The guide arm 62 can be fixed at that position by rotating the guide arm 62 to an arbitrary position around the protrusion 64 and then screwing and tightening a nut (not shown) to the bolt portion 66.
Thus, since the cleaning tool 1 of this embodiment can adjust the attachment angle with respect to the swing body 4 of the guide arm 62, the cleaning tool of this embodiment is the kind of carpet to be cleaned, the length of a hair foot, etc. Accordingly, after adjusting the attachment angle so that the positional relationship between the scraping roll body 3 and the surface to be cleaned is in an appropriate state, cleaning can be performed.

When the carpet on the floor surface is cleaned using the cleaning tool 1 of the present embodiment, the cleaning tool 1 is placed on the surface to be cleaned S as shown in FIG. Push to move the cleaning tool 1 forward (in the direction of arrow X in FIG. 7). Along with this movement, the driving wheel 2 in contact with the surface to be cleaned S rotates, and the operating force applied via the operation unit 71 is converted into a rotating force. The rotating force is integrated with the driving wheel 2. The rotation is transmitted to the scraping roll 3 via the rotating first gear 22, the third gear 48 that meshes with the first gear 22, and the second gear 33 that meshes with the third gear 48. The operating force applied to the cleaning tool 1 is a force applied to the cleaning tool 1 in order to move the cleaning tool 1. The gear ratio between the first gear 22 and the third gear 48 and the gear ratio between the third gear 48 and the second gear 33 are such that the peripheral speed V2 at the outer peripheral portion of the scraping roll body 3 is higher than the traveling speed V1 of the cleaning tool 1. It is set so as to be faster, and the scraping roll 3 rotates in the arrow Y direction in FIGS. 4 and 7 at a peripheral speed V2 faster than the traveling speed V1.
The cleaning object G on the surface to be cleaned S is scraped up by the rotation of the scraping roll 3, and the cleaned cleaning object G is stored in the removed object storage unit 5. The cleaning tool 1 according to the present embodiment effectively removes the cleaning object on the surface to be cleaned by rotating the scraping roll body quickly at a peripheral speed V2 faster than the traveling speed V1 of the cleaning tool. Has a function to increase the effect. If the object to be cleaned G has accumulated to some extent in the removed object storage unit 5, the box-shaped body 46 is pulled out of the swing body 4 and the internal dust is discarded and set in the swing body 4 again. Alternatively, the box-shaped body 46 is discarded and replaced with a new one.

  As shown in FIG. 7, the cleaning tool 1 of the present embodiment has a guide arm 62 (guide means) 6 while the swing body 4 that supports the scraping roll body 3 is rotatable with respect to the main body 7. Even when the hair of the carpet is long and the driving wheel 2 is greatly sunk into the carpet, the scraping roll body 3 is displaced upward with respect to the driving wheel 2 (that is, the height of the rotation shaft). The contact state between the scraping roll body 3 and the surface to be cleaned S is kept constant without being excessively recessed (because the position becomes high). Therefore, the resistance received by the cleaning tool 1 during the cleaning operation is small, the cleaning tool 1 can be smoothly moved with a small force, and the operability is excellent, and the scraping roll body 3 is reliably rotated and excellent. Cleaning performance is obtained.

In addition, some carpets have irregularities on the surface, such as those with long and short hairs on the surface, and patterns on the surface, etc., but when cleaning such carpets In addition, since the swing body 4 that supports the scraping roll body 3 is rotatable with respect to the main body 7 and has a guide arm 62 (guide means) 6, as shown in FIG. When moving from the short part of the bristle to the long part of the bristle, the scraping roll body 3 is displaced upward, and the scraping roll body 3 is caught on the step formed on the surface of the carpet. Is prevented. Therefore, the cleaning tool 1 can be smoothly moved with a small force during the cleaning operation, and the operability is excellent, and the scraping roll body 3 is reliably rotated to obtain an excellent cleaning performance.
Thus, according to the cleaning tool 1 of this embodiment, it can be moved smoothly regardless of the surface state of the surface to be cleaned, is excellent in operability, and the scraping roll body rotates reliably. Excellent cleaning performance can be obtained.

Further, the drive wheel 2 of the cleaning tool 1 of the present embodiment can be rotated in both forward and reverse directions. However, when the cleaning tool 1 is advanced, that is, when the drive wheel 2 is rotated in the direction of arrow C, the rotation of the drive wheel 2 is possible. The force is transmitted to the raising roll body 3 and the raising roll body 3 rotates. On the other hand, when the cleaning tool 1 is moved backward, that is, when the driving wheel 2 is rotated in the direction of arrow D, the rotational force is raised. The scraping roll body 3 is not rotated without being transmitted to the roll body 3. Specifically, the drive wheel 2 is provided with a ratchet mechanism (not shown) that transmits the rotational force to the shaft body 21 only when moving forward, and idles during reverse travel and does not transmit the rotational force to the shaft body 21.
Thus, by providing the reverse rotation prevention mechanism that prevents the reverse rotation of the scraping roll body 3, it is possible to prevent the cleaned cleaning object G from being discharged to the outside again.
As the reverse rotation prevention mechanism for preventing the reverse rotation of the scraping roll body 3, various known ones can be used without particular limitation, and the mechanisms described in [0021] to [0024] of Patent Document 2 are adopted. You can also.

Further, as described above, a step 47 is formed in the lower wall portion 44 between the holding portion 41 of the swing body 4 and the removed matter storage portion 5, and the cleaning object accommodated in the removed matter accommodation portion 5. For example, when the reverse rotation of G is sufficiently prevented, the reverse rotation prevention mechanism may not be used. In this case, when the cleaning tool is moved backward by holding the grip portion 75 and the scraping roll body 3 is rotated in the reverse direction, the swing body 4 rotates upward with the shaft body 21 as the rotation axis, thereby The operating force can be reduced by moving away from the cleaning surface S and reducing the frictional resistance with the surface S to be cleaned. The reason why the swing body 4 is separated from the surface to be cleaned S is considered as follows.
That is, as shown in FIG. 10, the operating force when the cleaning tool is moved backward is converted into a rotational torque that reversely rotates the first gear 22 fixed to the driving wheel 2 (rightward in FIG. 10). This rotational torque is decomposed into a force F1 for rotating the third gear 48 and a force F2 for lifting the swing body 4 supporting the third gear shaft. Considering the moment around the shaft body 21, the swing body 4 is lifted when L2 × F2> L1 × W. Here, L2 is a distance from the center of the shaft body 21 to the second gear central axis, F2 is a force for lifting the swing body 4, and L1 is from the center of the shaft body 21 to the center of gravity of the swing body 4. The distance, W, is the weight of the swing body 4. Further, since the rotational resistance of the third gear increases as the reduction ratio between the third gear 48 and the second gear 33 increases, the force F1 that rotates the third gear 48 decreases. Accordingly, since the force F2 for lifting the swing body 4 increases, the swing body 4 is lifted without the scraping roll body 3 rotating backward when the cleaning tool is moved backward.

The present invention is not limited to the above embodiment, and various modifications can be made.
For example, instead of the guide arm 62 described above, a roller may be provided as the guide means 6. The roller is difficult to receive resistance from the surface to be cleaned by rotating in contact with the surface to be cleaned, and even when the driving wheel 2 is greatly sunk into the carpet, the roller 3 is moved upward. It is possible to prevent the scraping roll 3 from sinking into the carpet and to keep the contact state between the scraping roll body 3 and the surface to be cleaned S constant. Such a roller is also preferably provided in front of the lower portion of the scraping roll body 3 from the viewpoint of maintaining the contact state between the scraping roll body 3 and the surface S to be cleaned.

  Further, as the scraping roll body, instead of the flocking brush as described above, a twisting brush, or one provided with one or a plurality of blades such as rubber or sponge can be used. FIG. 9 shows a scraping roll body 3A in which a plurality of blades 34 made of rubber, sponge, or the like are provided around the cylindrical roll body 35 in the circumferential direction.

  In addition, as a mechanism for transmitting the rotational force of the drive wheel 2 to the scraping roll body 3 and a mechanism for increasing the peripheral speed of the scraping roll body 3 from the moving speed of the cleaning tool 1, instead of a combination of gears, A mechanism using a pulley, a chain, or the like, or a combination of these can also be employed. Further, the mechanism described in paragraphs [0025] to [0027] of Patent Document 2 may be employed. Further, in the cleaning tool 1 described above, the rotational force of each of the pair of drive wheels 2 and 2 is transmitted to the scraping roll body 3 by the gear, but the scraping roll body 3 is moved by the rotational force of only one drive wheel 2. It can also be rotated.

  Even if the main body has an attachment portion (operation base 72 or the like) to which an operation portion for operating the cleaning tool can be attached, an operation portion for operating the cleaning tool is provided so as not to be removable. good. In addition, the swing body 4 is configured to rotate a shaft body provided in parallel to the shaft body 21 separately from the shaft body 21 instead of using the shaft body 21 that serves as a rotation shaft of the drive wheel 2 as a rotation shaft. It may rotate as a movement axis.

It is a perspective view which shows the cleaning tool which concerns on one Embodiment of this invention. It is a figure which shows the state which looked at the principal part of the cleaning tool of FIG. 1 from the front. It is an AA line schematic cross section of FIG. It is a BB line schematic cross section of FIG. It is a figure explaining the mechanism which rotates a raking roll body. 6 (a) to 6 (d) are views showing a guide arm which is a guide means of the cleaning tool shown in FIG. 1. In FIGS. 6 (a) and 6 (b), the guide arm is fixed to the swing body. 6 (c) to 6 (d) show the guide arm in a state before being fixed to the swing body or removed from the swing body. It is a figure which shows a mode that the carpet with a long bristle is cleaned with the cleaning tool shown in FIG. It is a figure which shows a mode that the carpet which has an unevenness | corrugation on the surface is cleaned with the cleaning tool shown in FIG. It is a perspective view which shows the other example of a raking roll body. It is explanatory drawing explaining the reason for which a swing body leaves | separates from a to-be-cleaned surface.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cleaning tool 2 Drive wheel 3 Rotating brush (scraping roll body)
4 Swing body 5 Object to be removed 6,62 Guide arm (guide means)
7 Main body X Progression direction of cleaning tool Y Rotation direction of scraping roll body

Claims (3)

A driving wheel that is rotated by an operating force applied to the cleaning tool, a scraping roll body that is rotated by a rotating force obtained from the driving wheel and scrapes an object to be cleaned on the surface to be cleaned, and supports the scraping roll body And a swinging body that displaces the rotational axis height position of the scraping roll body up and down with respect to the rotational axis height position of the drive wheel, and a removal that accommodates the cleaning object that is scraped up by the scraping roll body A guide means for maintaining a constant contact state between the scraping roll body and the surface to be cleaned .
The drive wheel is rotatably supported by a main body having an operation portion for operating a cleaning tool or an attachment portion to which the operation portion can be attached, and the swing body is rotatably connected to the main body. And
The swing body is connected to a shaft body serving as a rotation shaft of the drive wheel, and is rotatable about the shaft body as a central axis.
The guide means is a guide part having a sled part raised upward as it goes forward and a flat rear part having a flat lower surface, or a roller-shaped guide part,
The said guide part is the cleaning tool provided in the lower part front of the said raking roll body . When moving the cleaning tool toward the front, the driving wheel in contact with the surface to be cleaned rotates along with this movement, and the operating force applied through the operation unit is converted into rotational force, The rotational force is transmitted to the scraping roll through a first gear that rotates integrally with the drive wheel, a third gear that meshes with the first gear, and a second gear that meshes with the third gear. The gear ratio between the first gear and the third gear and the gear ratio between the third gear and the second gear are set so that the peripheral speed at the outer peripheral portion of the scraping roll body is faster than the traveling speed V1 of the cleaning tool. by are the peripheral speed of the scraping up roll is faster than the advancing speed of the cleaning tool no longer,
When the cleaning tool is moved rearward by setting the center of gravity of the swing body to be between the axis of the third gear and the axis of the first gear, the scraping roll The cleaning tool according to claim 1 , wherein the swing body is lifted immediately before the body reversely rotates . The cleaning tool according to claim 1 or 2, wherein the guide means is provided so that a positional relationship between the scraping roll body and a surface to be cleaned can be adjusted.

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