JP2017189269A - Suction tool for vacuum cleaner and vacuum cleaner including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction tool for vacuum cleaner with good usability which has a high suction force for sucking dust in the depth part of carpet bristles, and which can suck dust at the back of the suction tool in the longer direction whole surface and relatively large dust such as rice grains and the like, and a vacuum cleaner including the same.SOLUTION: A suction tool includes: a rotary cleaning body having a rotary shaft in parallel with a cleaning surface; an electric motor having an output shaft in parallel with the rotary shaft, and for rotationally driving the rotary cleaning body; a control board for controlling the electric motor; a substantially sectorial columnar-shaped turning cleaning body having a shaft in parallel with the rotary shaft and coming into contact with a cleaning surface; and a suction case having a partition wall for partitioning between a suction chamber in which the rotary cleaning body and the turning cleaning body are arranged and an accommodation chamber arranged above the suction chamber for accommodating the electric motor and the control board. The turning rotary body turns between a state of coming into contact with both a surface M to be cleaned and the suction case 10 and a state of coming into contact only with the surface M to be cleaned without coming into contact with the suction case 10.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a vacuum cleaner suction tool and a vacuum cleaner including the same.

  The suction tool of a vacuum cleaner is required to have high suction power and ease of use capable of sucking relatively large dust such as dust and rice grains behind the suction tool.

  Patent Document 1 discloses a suction tool for a vacuum cleaner provided with a cylindrical cleaning body in which a part in the longitudinal direction has a D-shaped cross section so as to rotate at a constant angle by friction with a floor surface. Have been described.

JP 2004-121409 A

  However, the suction tool of the vacuum cleaner described in Patent Document 1 has a structure in which the cylindrical cleaning body rotates by friction with the floor surface, and a partial cross section in the longitudinal direction must be circular. However, there is a problem that the dust cannot be sucked in this portion and dragged on the floor surface.

  An object of the present invention is to provide a vacuum cleaner suction tool that has a high suction force and that can suck relatively large dust such as dust and rice grains behind the suction tool over the entire lengthwise direction, and the suction tool. It is to provide a vacuum cleaner.

  The present invention includes a rotary cleaning body having a rotation axis parallel to a cleaning surface, an electric motor that rotationally drives the rotary cleaning body, a control board that controls the electric motor, and an axis parallel to the rotation axis, A rotating cleaning body in contact with a cleaning surface; a suction chamber in which the rotating cleaning body and the rotating cleaning body are disposed; and a storage chamber that is disposed above the suction chamber and houses the electric motor and the control board. A suction case having a partition wall for partitioning, and the rotating cleaning body is in contact with only the surface to be cleaned M without being in contact with the suction case 10 from a state of being in contact with both the surface to be cleaned M and the suction case 10. It is characterized by rotating between states.

  According to the present invention, there is provided a vacuum cleaner suction tool that has a high suction force and that can suck relatively large dust such as dust and rice grains behind the suction tool in the entire lengthwise direction, and the suction tool. A vacuum cleaner can be provided.

It is an appearance perspective view showing the whole vacuum cleaner concerning the present invention. It is a top view of the suction tool of a 1st Example. It is a bottom view of the suction tool of a 1st Example. It is an external appearance perspective view of the rotation cleaning body provided in the suction tool of a 1st Example. It is BB sectional drawing at the time of advance of the suction tool of FIG. It is AA sectional drawing at the time of retraction of the suction tool of FIG. It is a top view of the state which removed the upper part of the suction case of the suction tool of Example 1. FIG. It is AA sectional drawing at the time of advance of the suction tool of FIG. It is an external appearance perspective view of the rotation cleaning body provided in the suction tool of a 2nd Example. It is AA sectional drawing at the time of retraction of the suction tool of a 2nd Example. It is an external appearance perspective view of the rotation cleaning body provided in the suction tool of a 3rd Example. It is AA sectional drawing at the time of advance of the suction tool of a 3rd Example.

  A first embodiment according to the present invention will be described below with reference to the drawings.

  FIG. 1 shows an external view of a vacuum cleaner according to a first embodiment of the present invention. The vacuum cleaner 1 includes a vacuum cleaner body 2, an operation tube 4 that is connected to the hose portion 3 and provided with a hand operation switch SW and the like, an extendable tube 5 that is extendable and retractable, and a suction tool 6. ing.

  The vacuum cleaner body 2 includes an electric blower 2a that generates a suction force, a dust collection portion 2b that stores dust collected by the suction force of the electric blower 2a, and the like. In this embodiment, a so-called cyclonic vacuum cleaner will be described as an example. However, as long as it has suction force generating means, it can be applied to other types of vacuum cleaners such as a so-called paper pack type. Also good.

  One end of the hose part 3 is connected to the connection port 2c of the cleaner body 2 so as to communicate with the dust collecting part 2b of the cleaner body 2. Further, the other end of the hose portion 3 is connected to one end of the operation tube 4.

  The operation tube 4 includes a handle 4a provided with a hand operation switch SW and the like, a power supply terminal (not shown) supplied with power from the cleaner body 2, and the like. An energization terminal (not shown) provided at one end of the extension pipe 5 is connected to the power supply terminal.

  By operating the hand operation switch SW of the operation tube 4, it is possible to operate and stop the electric blower 2a, switch between strong, medium and weak, and operate and stop the electric motor 40 (see FIG. 7) provided in the suction tool 6. ing.

  The extension pipe 5 includes an outer pipe 5a and an inner pipe 5b. One end of the inner pipe 5b is inserted into the other end of the outer pipe 5a, and is provided inside the outer pipe 5a and the inner pipe 5b (not shown). The air passages are connected so as to communicate with each other, and are configured to be extendable. FIG. 1 illustrates a state in which the extension pipe 5 is shortest.

  FIG. 2 is a top view of the suction tool.

  As shown in FIG. 2, the suction tool 6 includes a suction case 10 that has a substantially T shape in a top view, and a suction joint 13 that is connected to the suction case 10.

  The mouthpiece case 10 includes a mouthpiece main body 11 that is elongated in the left-right direction (width direction) in a top view, and a connecting portion 12 that is connected to the mouthpiece joint 13 at the center in the left-right direction of the mouthpiece main body 11. ing. The connecting portion 12 is formed with a flow path R (see FIG. 3) that communicates the inlet body 11 and the inlet joint 13.

  The mouthpiece main body 11 is provided in such a manner that a bumper 11a is sandwiched between an upper case 11b constituting the upper side of the mouthpiece main body 11 and a lower case 11c constituting the lower side from the front end surface to the left and right side surfaces. The bumper 11a may be locked to the lower case 11c with a claw. The bumper 11a is made of an elastic material such as rubber or elastomer, and ensures airtightness in the mouthpiece main body 11 during use, and the mouthpiece main body 11 becomes furniture or the like when the electric vacuum cleaner 1 (see FIG. 1) is used. In the event of a collision, it serves as a cushioning material that prevents damage to the furniture and the like and absorbs shock to the mouthpiece body 11.

  The suction joint 13 includes a first connecting portion 14 that is rotatably connected to the connecting portion 12, and a second connecting portion 15 that is rotatably connected to the first connecting portion 14. Yes.

  The first connecting portion 14 has a substantially semi-track shape in a top view of FIG. 2 and has a cylindrical shaft 14 a that is connected to the connecting portion 12. The shaft 14 a is supported by a bearing portion 12 g (see FIG. 7) in which the axial direction is the left-right direction of the mouthpiece main body 11 and both ends of the shaft 14 a are formed in the connecting portion 12. Moreover, the 1st connection part 14 is comprised so that it can rotate from a substantially parallel state with respect to the to-be-cleaned surface (cleaning surface) M (refer FIG. 5) to a substantially perpendicular state (up-down direction). Yes. That is, by rotating the first connecting portion 14 with respect to the suction case 10 with the shaft 14a as a fulcrum, the extension tube 5 (see FIG. 1) is substantially parallel to the surface to be cleaned M (see FIG. 5). It can be rotated between vertical states.

  The second connecting portion 15 is configured to be rotatable with respect to the first connecting portion 14 in the left-right direction of the mouthpiece main body 11 (clockwise and counterclockwise in FIG. 2). Thereby, for example, the extension pipe 5 can be tilted toward a state substantially parallel to the surface to be cleaned M from a state in which the extension tube 5 is substantially perpendicular to the surface to be cleaned M.

  In addition, the second connecting portion 15 is provided with a power supply terminal 15a through which power is supplied. In addition, in the vacuum cleaner 1 (refer FIG. 1) of a present Example, it has comprised so that the electric power supplied to the suction tool 6 may be supplied from the cleaner body 2 through the hose part 3, the operation tube 4, and the extension tube 5. FIG. Yes.

  For example, in the state in which the extension pipe 5 (see FIG. 1) is substantially perpendicular to the surface M to be cleaned, the suction joint 13 as described above tilts the extension pipe 5 in the left-right direction (left-right direction) and operates the operation pipe 4 By twisting the (grip 4a) in either the left or right direction, the suction body portion 11 can be rotated approximately 90 degrees in the left or right direction, and cleaning can be performed with the left and right direction of the mouth portion main body 11 as the moving direction. Therefore, the suction tool 6 can be moved along the side of the wall for cleaning, or the suction tool 6 can be inserted into a narrow gap for cleaning.

  FIG. 3 is a bottom view of the suction tool.

  As shown in FIG. 3, the suction tool 6 includes a rotary cleaning body 20 and a rotary cleaning body 30. The suction case 10 (suction body 11) is formed with a brush chamber Q having an opening on the lower surface (a surface facing the cleaning surface) and an airtight chamber P having an opening (suction port) on the lower surface. Yes.

  The rotary cleaning body 20 is disposed on the front side in the front-rear direction along the left-right direction of the mouthpiece main body 11 and is rotatably supported in the brush chamber Q. Moreover, the rotary cleaning body 20 is provided continuously from one end side to the other end side in the left-right direction (the axial direction of the rotary cleaning body 20) of the suction body 11 and is driven by a motor 40 (see FIG. 7). (Details will be described later). The motor 40 can select “run” or “stop” by the hand operation switch SW of the operation tube 4 (see FIG. 1). When “run” is selected, the rotary cleaning body 20 is driven by the motor 40. In addition to the airtight holding action and the dust transport action, an operation force reducing action, a dust cleaning action on the cleaning surface, and a polishing (wiping) action can be obtained.

  The rotary cleaning body 20 includes a plurality of types of brushes 20a and 20b such as brushes having different hardnesses, and the brushes 20a and 20b are arranged in a spiral shape. In the present embodiment, the case where two types of brushes 20a and 20b are disposed has been described as an example. However, the present invention is not limited to this, and three or more types may be arranged in a spiral shape. A configuration in which a blade member made of an elastic material such as rubber is spirally arranged between the brushes formed may be added and can be appropriately changed.

  The suction tool 6 includes a brush drive switch 16, a wheel 17, and bearing pressing members 31 and 32 on the lower surface of the connecting portion 12 of the suction case 10.

  The brush drive switch 16 is a switch that detects whether or not the lower surface of the suction tool 6 is in contact with the surface to be cleaned M, and is configured together with the wheels 16a. The wheel 16a is provided so that a part of the wheel 16a always protrudes from the lower surface of the suction case 10 (connecting portion 12) by a biasing means such as a spring. When it is detected that the wheel 16a has jumped out of the suction case 10 and is not in contact with the surface to be cleaned M, the electric motor 40 (see FIG. 7) is driven by the control of the circuit board 50 (control board) (see FIG. 7). Is stopped, and the rotation of the rotary cleaning body 20 is stopped. When it is detected that the wheel 16a is pushed into contact with the surface to be cleaned M, the electric motor 40 is driven by the control of the circuit board 50, and the rotary cleaning body 20 rotates.

  The wheel 17 has the role of improving the operating performance of the suction tool 6 by bringing the bottom surface of the suction tool 6 into close contact with the surface M to be cleaned in response to the stress of the forward / backward movement and the rotation operation operated by the operation tube 4. ing.

  The bearing pressing member 31 supports the rotating shaft of the rotary cleaning body 20 and one end of the shaft portion 30a of the rotary cleaning body 30, and is fixed to the suction case 10 with screws.

  The bearing pressing member 32 supports the rotation shaft of the rotary cleaning body 20 and the other end of the shaft portion 30a of the rotary cleaning body 30, and a lock mechanism (not shown) in the suction case 10 so as to be removable. It is fixed using.

  FIG. 4 is an external perspective view of the rotational cleaning body 30. The rotary cleaning body 30 has a substantially fan-column shape, and includes a shaft portion 30a, a substantially fan-shaped bottom surface 30b, a side surface 30c, and an arc surface 30d. Further, the rotational cleaning body 30 is supported so as to be rearward and parallel to the rotational cleaning body 20 and the shaft portion 30a is rotatable relative to the suction case 10 at a certain angle (FIG. 5). The fixed angle means that the circular arc surface (cleaning surface) 30d is in contact with both the surface to be cleaned M and the lower case 11c of the suction case 10 (angle), and is not in contact with the suction case 10 and covered. It is between the state (angle) which contacts only the cleaning surface M.

  FIG. 5 is a cross-sectional view taken along the line BB in FIG. 2 and shows a state when the suction tool moves forward. When the suction tool 6 moves forward, the rotary cleaning body 30 has an arc surface (cleaning surface) 30d as shown in FIG. 5 due to friction with the floor surface (surface M to be cleaned). It will be in the state which contacts both the to-be-cleaned surface M and the lower case 11c of the suction case 10. FIG. Thereby, the pressure (negative pressure) inside the airtight chamber P is improved, and the suction force can be improved.

  FIG. 6 is a cross-sectional view taken along the line AA in FIG. 2 and shows a state when the suction tool is retracted. When the suction tool 6 is retracted, the rotary cleaning body 30 is brought into contact with the lower case 11c of the suction case 10 due to friction with the floor surface (surface M to be cleaned) as shown in FIG. Without being in contact with the surface to be cleaned M, the lower case 11c and the suction flow path U are formed. Accordingly, when the suction tool 6 is retracted, relatively large dust such as dust and rice grains behind the suction tool 6 can be taken into the suction tool 6 through the suction flow path U.

  In this embodiment, the rotary cleaning body 6 has a substantially fan-column shape, but is not limited to this. If the rotary cleaning body is a structure having a shaft portion used for supporting the suction mouth main body portion 11, a contact portion (cleaning surface) that contacts the floor surface, and a support portion that connects the shaft portion and the contact portion. good. For example, a columnar or cylindrical structure can be mentioned. Examples of the cross section of the rotary cleaning body include a fan shape and a polygon. The rotary cleaning body may have a substantially T-shaped structure. The contact portion may be arcuate or polygonal.

  FIG. 7 is a top view of the suction tool with the upper portion of the suction case 10 removed. As shown in FIG. 7, the suction tool 6 includes an electric motor 40 that drives the rotary cleaning body 20 and a circuit board 50 that controls the electric motor 40 above the rotary cleaning body 20 and the rotary cleaning body 30.

  The electric motor 40 is attached to one end side of the suction body 11 in the left-right direction. Further, the output shaft of the electric motor 40 is arranged in parallel with the left-right direction of the inlet body 11. Further, the output shaft of the electric motor 40 extends toward one end side in the left-right direction, and is connected to the rotary cleaning body 20 via a toothed belt 41 at one end portion (the right end portion in the drawing) in the mouthpiece main body 11. ing.

  The circuit board 50 is attached to the side opposite to the electric motor 40 in the left-right direction of the mouthpiece main body 11. The circuit board 50 has a rectangular substrate with long sides arranged in the left-right direction, and is arranged in the mouthpiece body 11 with the mounting surface facing upward in the vertical direction. Note that the mounting surface is not necessarily limited to upward in the vertical direction, and may be inclined with respect to the horizontal direction, or may be directed in the front-rear direction (vertically).

  As indicated by arrows in FIG. 7, the pressure (negative pressure) in the flow path R (see FIG. 3) that communicates the outside air (atmospheric pressure), the suction port main body 11, and the suction joint 13 in the motor storage chamber S. An air flow is formed by the differential pressure. Specifically, outside air flows from two suction ports 91 on the left and right in front of the suction port main body 11, passes through a filter unit (not shown in FIG. 7), flows through the motor 40, and the first connection portion of the suction joint 13. 14 flows into the flow path R from the opening 14b provided in the channel 14. The heat generated by driving the motor 40 is cooled well by this air flow. In the suction tool 6 of the present embodiment, the circuit board 50 is also provided in the motor housing chamber S together with the motor 40. However, since the heat generation of the circuit board 50 is relatively small, the airflow is directed to the circuit board 50 side. Although not having a guiding channel structure, when the circuit board 50 generates a large amount of heat (temperature rise), a structure may be adopted in which an air flow is guided to the circuit board 50 side and the circuit board 50 is cooled together with the motor 40.

  8 is a cross-sectional view taken along line AA in FIG. As shown in FIG. 8, a nozzle 71 that discharges airflow into the hermetic chamber P is provided behind the brush chamber Q, and the nozzle opening 71a opens downward (to-be-cleaned surface M). Due to the pressure difference between the inside (negative pressure) of the hermetic chamber P and the outside air (atmospheric pressure), the airflow flows into the nozzle 71 through the suction port 70 and the space T, and the high-speed airflow is discharged from the nozzle opening 71a toward the surface to be cleaned M. Is done. Note that the upper side of the suction port 70 is formed by the front edge 95a of the removable cover body 95, so that even when liquid such as water is applied from above, the space T and the nozzle 71 are placed. The liquid can be prevented from entering. Moreover, since the cover body 95 is removable, it becomes easy to clean by removing the cover body 95 at the time of cleaning.

  The nozzle 71 is formed integrally with the front partition wall 65 so as to suppress deformation of the front partition wall 63 due to a static pressure difference.

  The present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist of the present invention.

(Second Embodiment)
FIG. 9 is an external perspective view of a rotary cleaning body 30A according to the second embodiment of the present invention. The suction tool 6A of the electric vacuum cleaner 1 according to the second embodiment has a configuration in which the rotary cleaning body 30A is used instead of the rotary cleaning body 30. Note that in the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIG. 9, the rotational cleaning body 30A omits the side surface 30c referred to in the first embodiment, and includes a shaft portion 30a, a bottom surface 30b, and an arc surface 30d.

  FIG. 10 is a cross-sectional view taken along the line AA of the suction tool of the second embodiment, and shows a state when the suction tool 6A in the second embodiment is moved backward. According to the second embodiment, the area of the suction flow path U formed by the lower case 11c and the rotary cleaning body 30A when the suction tool 6A moves backward can be larger than that of the first embodiment, and a larger amount of dust can be sucked into the suction tool. It can be taken into 6A. Specifically, the space between the shaft portion 30 a and the circular arc surface 30 d is also a part of the suction flow path U.

  Further, since the side surface 30c is not provided, the suction tool can be made lighter than the first embodiment, and the load applied to the hand during cleaning can be reduced.

  In FIG. 9, the entire side surface 30c of the rotational cleaning body 30A is omitted, but a part of the side surface 30c may be omitted.

(Third embodiment)
FIG. 11 is an external perspective view of a rotational cleaning body 30B according to the third embodiment of the present invention. The suction tool 6B of the electric vacuum cleaner 1 according to the third embodiment has a configuration in which the rotary cleaning body 30B is used instead of the rotary cleaning body 30. Note that in the third embodiment, identical symbols are assigned to configurations similar to those in the first embodiment and redundant descriptions are omitted.

  As shown in FIG. 11, in the rotating cleaning body 30B, the shaft portion 30a ′ supported by the suction tool case and serving as the rotation center is not continuous from one end to the other end of the rotating cleaning body 30B. It is fixed to or integrated with the bottom surface 30b and has a sufficient length to be supported by the suction tool case 10 and not easily removed.

  As a result, the area of the suction flow path U can be made larger than in the first and second embodiments, so that larger dust can be taken into the suction tool 6B and the cross-sectional area Sp of the airtight chamber P (FIG. 12). The pressure in the hermetic chamber P can be made uniform by increasing (see). Further, since the shaft portion is shortened, the suction tool can be made lighter than the second embodiment, and the load applied to the hand during cleaning can be reduced.

  In addition, you may comprise the circular arc surface of the rotation cleaning body as described in the 1st-3rd embodiment with a brush member. In that case, since the rotational cleaning body 30C is in contact with the surface to be cleaned M by the brush member, the surface to be cleaned M is not damaged. Further, since the brush member does not wear due to friction with the surface to be cleaned M and the suction tool case 10, it is possible to prevent the suction force from being reduced due to wear of the rotary cleaning body 30C.

  Note that all or part of the circular surface 30d of the rotary cleaning body described in the first to third embodiments may be formed of a soft member such as rubber or elastomer. In that case, since the rotational cleaning body 30D is in contact with the surface to be cleaned M by the soft member, the air can be reliably prevented from leaking inside the suction tool and the pressure can be improved without damaging the surface to be cleaned M.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner 2 Vacuum cleaner main body 2a Electric blower 2b Dust collector 6, 6A, 6B Suction tool 10 Suction case 20 Rotating cleaning body 30, 30A, 30B Rotating cleaning body 40 Electric motor 50 Circuit board (control board)
65 Front partition wall 71 Nozzle 95 Cover body M Surface to be cleaned (floor surface)
Q Brush room P Airtight room

Claims (7)

A rotary cleaning body having a rotation axis parallel to the cleaning surface, an electric motor for rotationally driving the rotary cleaning body, a control board for controlling the electric motor, and an axis parallel to the rotation axis,
A rotary cleaning body in contact with the cleaning surface, a suction chamber in which the rotary cleaning body and the rotary cleaning body are disposed, and a storage chamber that is disposed above the suction chamber and houses the electric motor and the control board; A suction case having a partition wall partitioned into
The rotating cleaning body rotates between a state where it is in contact with both the surface to be cleaned M and the suction case 10 and a state in which it is not in contact with the suction case 10 and is in contact with only the surface to be cleaned M. Vacuum cleaner suction tool. A suction case, and a rotating cleaning body pivotally supported by the suction case,
The rotating cleaning body is between a state in which the cleaning surface of the rotating cleaning body is in contact with both the surface to be cleaned and the suction case, and a state in which the cleaning surface of the rotating cleaning body is in contact with only the surface to be cleaned. A suction tool for a rotating vacuum cleaner.   The electric rotating device according to claim 1 or 2, wherein the rotary cleaning body is configured by a shaft portion, a bottom surface, and an arc surface, omitting all or a part of a substantially fan-shaped side surface. Vacuum cleaner suction tool.   The rotating cleaning body is supported by the suction case, and the axis serving as the rotation center is not continuous from one end to the other end of the rotating cleaning body, and is fixed or integrated on the substantially fan-shaped bottom surface. The suction tool for a vacuum cleaner according to any one of claims 1 to 3, wherein the suction tool has a sufficient length to be rotatably supported by the suction case.   The suction of the vacuum cleaner according to any one of claims 1 to 4, wherein the rotating cleaning body includes a brush member at a contact surface (arc surface) with the cleaning surface. Ingredients   6. The rotating cleaning body according to claim 1, wherein all or part of a contact surface (arc surface) with the cleaning surface is made of a soft member such as rubber or elastomer. A vacuum cleaner suction tool according to item 1.   The vacuum cleaner according to any one of claims 1 to 6, wherein the vacuum cleaner main body includes an electric blower that generates suction force, a vacuum cleaner main body having a dust collecting portion that collects dust, and the vacuum cleaner main body. Vacuum cleaner with a suction tool.

Images