JP4722527B2 - Brush device for cleaning machine - Google Patents

Description

  The present invention relates to a brush device suitable for use in a cleaner that rotates a roll brush while traveling to clean various cleaning surfaces such as a carpet surface, a floor surface, or a road surface.

  Regarding the cleaning machine using the rotating brush described above, the “traveling dust truck device” described in Patent Document 1 collects dust on the floor surface or road surface with the main brush while traveling and collects it in the hopper. The technique regarding the traveling type cleaning vehicle to be described is described. In this, the main brush 3 is supported by the rocker arm 21, and the main brush supported by the rocker arm is raised to a position away from the floor surface, or is lowered onto the floor surface which is a cleaning surface. It is configured as follows. The rocker arm is configured so that a load is applied downward by the weight of the brush, and the lower limit position of the brush can be changed by adjusting with a screw. Therefore, if the brush wears and the brush contact pressure with respect to the floor surface becomes weak, the contact pressure can be increased by changing the screw position, and of course, it can be reduced.

Further, in the “floor cleaning machine having a cleaning water recycling function” described in Patent Document 2, the lift actuator 14 attached to the vehicle body 2 is driven to drive the main shaft 11 via the lift arm 15 and the main shaft 11. As shown in FIG. 1, the cover body 13 attached in a cantilevered manner and the left and right support arms 16 and 17 are lowered and turned toward the floor so that the lower edge of the cover body 13 and the cleaning brush 20 are as shown in FIG. A mechanism for grounding to the floor is described.
Utility Model Registration No. 2532667 JP-A-9-94198

  However, since the apparatus described in Patent Document 1 lowers the brush supported by the rocker arm to a height at which it comes into contact with the predetermined floor surface together with the rocker arm, the brush wears and the brush contact pressure is increased. If it is lowered, there is a problem that the operation becomes complicated because the screw position must be changed each time to increase the contact pressure to the floor of the brush.

  Furthermore, even if the brush wears out and exceeds the service limit, the screw position can still be changed and the brush position can continue to be lowered, and as a result, it is not noticed that the cleaning is impossible, or When the target cleaning surface is a carpet or the like, there has been a problem of damaging the carpet surface.

  Further, in the apparatus described in Patent Document 1, a dust chute is provided so that dust does not protrude from between the tip of the brush and the dust hopper when the dust swept up by the brush is dropped and collected on the dust hopper. On the other hand, a device is devised to synchronize the spacing of the dust chute with the brush tip so that the dust does not protrude due to the brush wear opening between the brush tip and the dust hopper. As a result, it is necessary to use a new part for solving the problem of defective dust recovery caused by the wear of the brush, which has been a cause of high costs.

  On the other hand, as shown in the figure, the apparatus described in Patent Document 2 drives the lift actuator 14 to rotate the cover body 13 and the left and right support arms 16 and 17 downward toward the floor surface, thereby covering the cover body. The lower edge of 13 and the cleaning brush 20 are grounded together on the floor surface. However, since the brush and the lower edge of the cover body 13 are integrally attached to the cover body 13, if the brush wears down, the lower edge of the cover body 13 also follows and falls. Thus, the contact state between the side seal rubbers 21 and 22 that are the lower edges of the cover body 13 and the floor surface changes, and there is a problem that the suction state, the contact resistance to the floor surface, and the like become unstable.

  Further, according to the apparatus described in Patent Document 2, the wear limit of the brush is detected by the visual observation of the operator. If the brush is replaced incorrectly, the cleaning state deteriorates or the cleaning surface is removed. There was a risk of accidents such as damage.

  The present invention has been made to solve the above-mentioned problems, and its technical problem is that when the brush wears out and reaches the service limit, the brush cannot be lowered any more. This is to make it possible to detect this during operation so as to eliminate the deterioration of the cleaning state and damage to the cleaning surface such as the carpet surface caused by using a brush that has already reached the limit of use.

  Furthermore, another technical problem of the present invention is to improve the suction efficiency of dust suction performed together with the sweeping of dust with a brush and to prevent the carpet as a cleaning surface from sagging. And it is providing the brush apparatus for cleaning machines devised so that sufficient sweeping performance can be exhibited, without providing a dust chute.

(1) In order to solve the above technical problem, the invention according to claim 1 is directed to a garbage on a cleaning surface comprising a carpet surface, a floor surface, or a road surface by rotating a roll brush while traveling. A cleaner that is configured to collect dust that has been swollen into the cover body by rotating the roll brush by exerting a suction action of the blower on the inside of the cover body that covers the roll brush. ,
A brush arm body in which the above-described roll brush is mounted on one side, the other side is rotatably mounted on the vehicle body side, and the roll brush is configured to be movable toward and away from the cleaning surface according to the vertical movement by the operating means, and one side Is attached to the brush arm body so as to be rotatable, the upper side of the other side covers the outer periphery of the roll brush, and the bottom part directly or indirectly contacts the cleaning surface. A brush cover body as the cover body configured to be movable up and down, and a roll brush provided on either or both of the brush arm body or the brush cover body and attached to the brush arm body and the relative vertical operation between the brush cover body, and the brush vertically moving regulating means capable of regulating within a predetermined range, it moves up and down the brush arm body, against the cleaning surface Detecting the load current value of the lifting cylinder that can adjust the contact pressure of the roll brush and the motor that rotates the roll brush, and detecting the preset current value, the brush wear signal is A brush wear detecting device for transmitting, and when the wear of the roll brush advances and reaches the use limit, even if the lifting cylinder descends the brush arm body, When the roll brush is idled without being lowered to the floor surface, the brush wear detection device detects the additional current value of the motor due to the idle rotation and generates a brush wear signal.

(2) Moreover, the invention which concerns on Claim 2 WHEREIN: The said brush up-and-down movement control means is a stopper axis | shaft provided in any one of the said brush arm body and a brush cover body, and the stopper axis | shaft provided in any one other It is characterized by comprising a slide long hole that regulates the vertical movement of the first and second movements within a predetermined range.

(3) Moreover, the invention which concerns on Claim 3 provided the dust box which accommodates the dust swept up from the cleaning surface by rotation of a roll brush in the position adjacent to the said roll brush in the said brush cover body. It is said.

(4) Moreover, the invention which concerns on Claim 4 provides the opening part for the said roll brush in the bottom face part which contact | connects the cleaning surface of the said brush cover body, and closely contacts a cleaning surface in the peripheral part of this opening part. It is characterized in that a seal member is provided that seals the inside of the brush cover by sliding, and can press the front and back of the cleaning surface with which the roll brush contacts.

  According to the means described in (1) and (2) above, when the brush arm body is lowered to the cleaning surface when cleaning is performed, the roll brush is lowered to the cleaning surface, and at the same time, the brush cover body is lowered to the cleaning surface. . The roll brush and the brush cover body lowered on the cleaning surface can freely move up and down, so even if the roll brush is worn down and further lowered in the cleaning surface direction, the contact state of the brush cover body with the cleaning surface is not changed. It does not change. Therefore, the contact state of the brush cover body with respect to the cleaning surface does not change. Further, when the cleaning is finished or moved, the brush cover body also moves up when the brush arm body is lifted from the cleaning surface. Therefore, it is only necessary to start and end the cleaning. This makes driving easier.

Further, according to the means described in the above (1) and (2), when the load current during operation of the brush rotation drive motor is detected and a predetermined current value is detected in advance, the wear of the roll brush is determined. Therefore, when the roll brush reaches the use limit and the lowering of the roll brush is stopped by the above-mentioned brush vertical movement restricting means, the motor current for rotating the roll brush changes, and the change By detecting this, it can be detected that the wear limit of the roll brush has been reached. The use limit due to wear of the roll brush can be detected while the roll brush is rotating while traveling, so that it is possible to prevent troubles caused by wear without being visually confirmed by the operator. be able to.

Furthermore, according to the means described in (1) and (2), roll brush is worn, at the operating limit, the brush cover, or by brush vertical movement regulating means attached to the brush arm member, The roll brush does not descend any further. Therefore, it is possible to prevent the occurrence of troubles such as damage to the carpet surface that occurs due to the roll brush exceeding the wear limit, or insufficient cleaning.

  According to the means described in the above (3), the dust cover for storing dust swept by the rotation of the roll brush is provided at a position adjacent to the roll brush of the brush cover body, so that the dust swept up is safe as it is. It can be reliably guided to the dust box. Therefore, the presence of a so-called dust chute or the like as described in Patent Document 1 is unnecessary, and the configuration can be simplified.

  According to the means described in the above (4), the periphery of the brush is tightly slid and sealed against the cleaning surface at the edge of the opening provided on the bottom surface of the brush cover body, and the floor surface around the brush is pressed. Since the sealing member is provided, when cleaning carpets, etc., it is possible to improve the partial suction performance of the carpet surface, so that the dust accumulated in the deep part of the carpet can be easily swept out and sucked. In addition, the lifting of the carpet that occurs when brushing can be suppressed, and as a result, troubles such as partial sagging of the carpet do not occur.

  As described above, according to the brush device for a cleaner according to the present invention, when the roll brush is worn and reaches the use limit, the roll brush is prevented from lowering further and at the same time, this is detected during operation. Because it is possible to prevent the deterioration of the cleaning condition caused by using a roll brush that has reached the limit of use due to wear and damage to the carpet surface, etc., the advantage of being able to clean the brush safely Can do.

  The embodiment of the brush device for a cleaning device according to the present invention will be described below. FIG. 1 is a perspective view showing the entire cleaning device provided with the brush device of the present invention, and FIG. 3 and 4 are partially enlarged side views of the brush device of the present invention, FIG. 3 shows a state when the roll brush is new, and FIG. 4 shows a roll. FIG. 1 shows a state when a brush is worn. In these drawings, 1 is a main body of a cleaner, 1A is a main body cover, 2 is an operation handle, 3 is a driving wheel driven by a motor 15, and 4 is a front wheel. , 14 is a roll brush attached to the drive shaft 14R, 13 is a brush drive motor, and the cleaning machine shown in the drawing rotates the roll brush 14 while traveling in the left direction in the drawing, such as a carpet surface, a floor surface, or a road surface. Cleaning surface CP (hereinafter simply referred to as cleaning surface CP) It is configured to clean the U).

  Further, in the figure, generally indicated by reference numeral 20 is that the above-described roll brush 14 is rotatably attached to one end side, and the other end side is rotatably attached to the chassis 1K of the vehicle body using the attachment shaft 6. In the brush arm body, the entire brush arm body 20 is configured such that one end side to which the roll brush 14 is attached is rotatable up and down with respect to the cleaning surface CP with the mounting shaft 6 as a fulcrum. In FIG. 1, reference numeral 20H denotes an outer cover body.

  Reference numeral 30 generally indicates that one side is pivotally attached to the middle upper part of the brush arm body 20 using the support shaft 5 and the upper side of the other side is the upper part of the roll brush 14. It is a brush cover body formed with a cover portion 34 to be covered, and the entire brush cover body 30 has the support shaft 5 as a fulcrum and the side on which the cover portion 34 covering the roll brush 14 is provided with respect to the cleaning surface CP. The bottom surface side is configured to be in contact with the cleaning surface CP side directly or indirectly.

  In FIGS. 3 and 4, reference numeral 40 denotes a dust box adjacent to the roll brush 14 and connected to the inside of the brush cover body 30. The dust swept up by the rotation of the roll brush 14 is guided by the cover portion 34. It is structured to be collected in the dust box 40 described above. The dust box 40 is configured to be able to be pulled out in the front direction in the drawing in order to process the collected dust, and 41 denotes a guide plate of a duct suction passage that also serves as a lid plate of the dust box 40.

  2 to 4, reference numeral 9 denotes a blower provided inside the vehicle body. The suction action of the blower 9 reaches the dust box 40, and the dust (dust) that has risen into the dust box 40 passes through the suction duct 18 to be primary. And the secondary filters 10 and 11 sequentially filter the filtered clean air from the duct 9H through the blower 9 through the guide passage 1Z provided inside the main body cover 1A and the exhaust duct 12, and outside the cleaner main body 1. It is structured so that it is discharged.

Further in FIG., 16S spring for biasing the traction of upward at all times to the brush arm body 20 described above, 8 in lifting cylinders configured to be freely actuated operated by the operator, the vibration provided to the lower end of the cylinder rod The tip of the absorption spring portion 8S is connected to the brush arm body 20, and the brush arm body 20 is moved up and down by operating an operation panel provided with the lifting cylinder 8 at the portion of the operation handle 2. Thus, the contact pressure of the roll brush 14 with respect to the cleaning surface CP can be adjusted.

  37 is a stopper shaft projecting from the side of the tip of the brush cover body 30, and 24 is a long slide hole formed in the side of the tip of the brush arm 20, as shown in FIGS. By fitting a stopper shaft 37 into the slide long hole 24, a brush vertical movement restriction that restricts the relative vertical movement of the brush cover body 30 and the brush arm body 20, that is, the roll brush 14, within a predetermined range. Means are configured. 2 and 3 show the state when the roll brush 14 is new, as described above.

  According to the above brush up-and-down movement restricting means, when the roll brush 14 is worn and reaches the limit, the lifting cylinder 8 is operated to lower the brush arm body 20 downward to remove the worn roll brush 14. Even when trying to contact the cleaning surface CP, the stopper shaft 37 of the brush cover body 30 is engaged with the upper edge of the slide long hole 24 of the brush arm body 20 as shown in FIG. Since the lowering of the roll brush 14 is locked, it is possible to prevent various problems such as damage to the cleaning surface CP due to the worn roll brush 14 and insufficient cleaning.

  Further, in the present invention, as a result of the roll brush 14 being lowered by the brush vertical movement restricting means, when the roll brush 14 idles without contacting the cleaning surface CP, in the present invention, as shown in FIG. 13 detects a change in the current of the current detector 101, and from this detection signal, the control unit 102 sends an operation signal to the alarm unit 103 to notify the operator that the wear of the roll brush 14 has reached the limit. It consists of. FIG. 12 is a flowchart for explaining the state of current monitoring by the control unit 102. If it is determined in step S5 that the current is equal to or less than the set value, the process proceeds to step S6 and the alarm unit 103 is activated. Yes.

  Note that the set value shown in step S5 in the flowchart shown in FIG. 12 is a set value based on the passage time because a current drop occurs in the concave portion of the floor when the cleaner is running on, for example, a carpet. For example, the brush wear display is performed under the condition that the following continues for 5 seconds or more, for example. The set value is approximately x1.1 to x1.2 times the no-load current of the brush drive motor 13 (current value when the brush does not contact the carpet).

  The above-mentioned brush vertical movement restricting means is an example of implementation. For example, the brush arm body 20 is provided with a stopper shaft 37 and the brush cover body 30 is provided with a slide long hole 24 into which the stopper shaft 37 is fitted. Also good. FIG. 10 illustrates the configuration of the other embodiment, in which 14A is a new roll brush at the initial stage of the brush, 14B is a roll brush that has reached the limit at the time of brush wear, and a stopper shaft 37 Shows a state in which the movement (lowering of the roll brush 14) is stopped by moving downward in the slide long hole 24.

  In FIG. 10, reference numeral 13 </ b> B denotes an operating belt having one end stretched over a drive roll of the brush drive motor 13 and the other end spanned over a rotary roll 13 </ b> C that rotates the roll brush 14.

  Next, specific configurations of the brush arm body 20 and the brush cover body 30 described above will be described with reference to the drawings.

5A is a plan view showing an embodiment of the brush arm body 20, FIG. 5B is a left side view thereof, FIG. 5C is a right side view thereof, and FIG. 6 is an overall perspective view thereof. In these drawings, 20A and 20B are left and right arm plates, 20E and 20F are front and rear connecting plates for connecting these left and right arm plates 20A and 20B, 20D is a connecting rod, and 21 and 21 are for the mounting shaft 6 . Mounting holes 27 and 27 are bearing portions for inserting the support shaft 5 for rotatably supporting the brush cover body 30, 22 is a hole into which the drive shaft 14R of the brush drive motor 13 is inserted, and 23 are brush drive motors. Reference numeral 13 denotes a mounting hole, 20D denotes a locking rod on which the lower end of the vibration absorbing spring 8S of the lifting cylinder 8 (specifically, the lower end of the cylinder rod) is suspended, and 25 denotes a drive shaft 14R of the roll brush 14. Mounting hole, 20C is one of Cover chamber of the dust box 40 provided on the outer surface of the arm plate 20B, 26 denotes a mounting chamber of the dust box 40.

The entirety of the brush arm body 20 configured as described above moves up and down with the mounting shaft 6 as a fulcrum, and the spring, which has the above-described traction action, acts on the tip, specifically the connecting plate 20E. The lower end of 16S is suspended, and the roll brush 14 is prevented from contacting the cleaning surface CP side more strongly than necessary due to its weight.

  7A is a plan view showing an embodiment of the brush cover body 30, FIG. 7B is a left side view thereof, and FIG. 7C is a right side view thereof. And 30B are a dust suction portion and a cover portion of the brush cover body 30. When the dust is swept into the dust box 40 by the roll brush 14, the dust rising in the dust box 40 is subjected to the suction action of the blower 9. The dust box 40 is sucked to the blower 9 side through the dust 18 connected to the dust suction part 30 side from the exhaust ports 31 provided on the ceiling surface through the upper chamber 33 of the dust box 40. Yes.

  Reference numerals 32 and 32 denote bearing portions for inserting the support shafts 5 provided on one outer wall root end side of the brush cover body 30 and the support plate 30C. The brush cover body 30 supports the support shaft 5 as a fulcrum. As described above, it can be rotated up and down. Further, the above-described stopper shafts 37, 37 project from the distal end side of the left and right outer walls of the brush cover body 30.

  The cover portion 30B includes the brush cover portion 34, the brush chamber 34A in which the roll brush 14 is accommodated, a vertically long shaft hole 35 through which the drive shaft 14R of the roll brush 14 is inserted, and a bottom opening for the roll brush 14. 34B, and the dust that has been swept up from the cleaning surface CP by the rotation of the roll brush 14 is guided by the cover portion 30B and can be fed into the dust box 40 through the passage portion 39.

  FIG. 8 shows an embodiment of a seal member 50 attached to a portion of the opening 34B for the roll brush 14 provided on the bottom surface of the brush cover body 30, wherein (A) is a plan view and (B). (A) is an enlarged cross-sectional view taken along the line H-H in (A), (C) is a perspective view of the whole, and the whole seal member 50 includes a central part 50A, a tip part 50B, and a root end part 50C. It is constituted by.

  As shown in (B), the seal member 50 formed by punching the entire metal plate has a central portion 50A and a tip portion 50B that are inclined inward from each other, and on the upper portion of the flat bottom surface 50T. As shown in the enlarged view shown in FIG. 9, the bottom opening 34B of the brush cover body 30 is fitted, and a large cleaning port 51 into which the roll brush 14 is inserted is open at the bottom 50T. Has been.

  By arranging a plurality of round bars 52... In the traveling direction side by side over the cleaning port 51, the cleaning surface CP is pressed by the front and back bottom surfaces 50T of the cleaning port 51 at the time of cleaning, and the occurrence of deflection thereof is prevented. A plurality of round bars 52 are configured to prevent the wrapping (biting) into the roll brush 14 by pressing a foot wiping mat or the like.

  Further, the inclined plate 53 of the tip end portion 50B is provided along the bottom surface side of the inclined plate 38 provided in the bottom opening 34B of the brush cover body 30, and the bent tip portion 53A is connected to the brush cover body 30. 9 is engaged with the front edge of the inclined plate 38 by utilizing the elasticity of the metal, and the bent piece 55 provided on the root end portion 50C is arranged on one side of the bottom surface of the brush cover body 30 as shown in FIG. It is attached to the bottom surface side of the brush cover body 30 in such a manner that it can be exchanged.

  In the figure, 54 denotes a plurality of openings provided in the brush cover body 30 for lightening the brush cover body 30. Reference numerals 56... Denote holes for the screws 59. FIG. 9 is an enlarged cross-sectional view showing the main part of the present invention as described above.

The perspective view which showed an example of the cleaning machine provided with the brush apparatus which concerns on this invention. The side view explaining the internal structure of the cleaning machine provided with the brush apparatus which concerns on this invention. The side view which expanded and showed the principal part structure of this invention when a roll brush is new. The side view which expanded and showed the principal part structure of this invention when a roll brush was worn out. (A) is the top view which showed an example of the brush arm body used by this invention, (B) is the left view, (C) is a right view. The perspective view explaining the whole brush arm body. (A) is the top view which showed an example of the brush cover body used by this invention, (B) is the left view, (C) is a right view. (A) is the top view which showed an example of the sealing member used by this invention, (B) is the expanded sectional view along the HH line, (C) is the whole perspective view. Sectional drawing which expanded and showed the principal part of this invention. Explanatory drawing explaining the state of wear of a roll brush. The block diagram explaining the electric constitution of the alarm device. The flowchart explaining the procedure of the alarm generation by abrasion of a roll brush.

DESCRIPTION OF SYMBOLS 1 Cleaning machine main body 5 Support shaft 6 Mounting shaft 8 Lifting cylinder 9 Blower 14 Roll brush CP Cleaning surface 16S Spring 20 Brush arm body 30 Brush cover body 34 Cover part 40 Dust box 50 Seal member

Claims (4)

By rotating the roll brush while traveling, dust on the cleaning surface such as the carpet surface, floor surface, or road surface is swept up to the hopper and collected, and the blower is sucked into the cover body that covers the roll brush. A cleaning machine configured to collect the dust that has acted and has been swollen into the cover body by the rotation of a roll brush;
A brush arm body configured to attach the roll brush on one side, and rotatably attach the other side to the vehicle body side, and configured to allow the roll brush to contact and separate from the cleaning surface according to the vertical movement by the operating means;
One side is pivotally attached to the brush arm body side, the upper part on the other side covers the outer periphery of the roll brush, and the bottom part directly or indirectly contacts the cleaning surface, and the entire cleaning surface A brush cover body as the cover body configured to be freely movable up and down,
Provided in either or both of the brush arm body and the brush cover body, the relative vertical operation of the roll brush attached to the brush arm body and the brush cover body is within a predetermined range. A brush vertical movement restricting means capable of restricting to
An elevating cylinder capable of moving the brush arm body up and down to adjust the contact pressure of the roll brush on the cleaning surface;
The load current value of the motor that rotates the roll brush is detected, and when a preset current value is detected, the brush wear detection device that transmits a brush wear signal,
When the wear of the roll brush progresses and the usage limit is reached, the roll brush does not fall to the floor surface due to the regulation by the brush vertical movement regulating means even if the lifting cylinder descends the brush arm body. A brush device for a cleaning machine, wherein the brush wear detection device detects an additional current value of the motor due to the idling and generates a brush wear signal when the slipping occurs .   The brush vertical movement restricting means controls a stopper shaft provided on one of the brush arm body and the brush cover body, and a slide long hole for restricting the vertical operation of the stopper shaft provided on the other within a predetermined range. The brush device for a cleaning machine according to claim 1, wherein:   2. The brush device for a cleaning machine according to claim 1, wherein a dust box is provided in a position adjacent to the roll brush in the brush cover body to store dust that has been swept up from the cleaning surface by rotation of the roll brush. .   An opening for the roll brush is provided in a bottom surface portion that is in contact with the cleaning surface of the brush cover body, and a peripheral portion of the opening seals the inside of the brush cover by sliding while closely contacting the cleaning surface; and The brush device for a cleaning machine according to claim 1, 2 or 3, further comprising a seal member capable of pressing the front and back of the cleaning surface with which the roll brush contacts.

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