JP2017006185A - Suction tool for vacuum cleaner and vacuum cleaner including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction tool which has improved feature for cleaning dust collected in the suction tool and achieves both of dust collection performance and cleaning property, while reducing the opening area of a suction port in order to enhance dust collection performance.SOLUTION: A suction tool includes: an upper case and a lower case that form a suction tool body; a cover member attached to the lower case; rotary brushes having shafts and brushes arranged around the shafts; a motor for rotating the rotary brushes; a brush chamber from which the rotary brushes are removable; and a suction port positioned in parallel with the brush chamber and having an opening opened toward a cleaned surface. The cover member is rotated between two states: a state of covering a part of the opening and a state of not covering the opening.SELECTED DRAWING: Figure 5

Description

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

  Until now, when the suction force generated by the electric blower provided in the main body of the vacuum cleaner falls below a predetermined threshold, the shutter provided on the bottom surface of the suction tool (the surface to be cleaned) is closed, and the suction port for the floor surface A suction tool has been proposed in which the suction air speed at the suction port is ensured by narrowing the opening area of the nozzle and the dust suction performance is improved (see, for example, Patent Document 1).

JP 2010-284353 A

  However, the suction tool described in Patent Document 1 has a problem that dust tends to accumulate in the suction port when the shutter is closed, and that the dust deposited inside the suction tool is poorly cleaned because the opening area is small. .

  An object of the present invention is to provide a suction tool that improves both the dust collection performance and the cleanability while reducing the opening area of the suction port in order to improve the dust collection performance and improving the cleanability of the suction port. is there.

  A scissor case and a waist case forming the suction tool main body, a cover member attached to the scissor case, a rotating brush having a shaft and a brush disposed around the shaft, and an electric motor for rotating the rotating brush, A brush chamber in which the rotating brush can be attached and detached, and a suction port that is located in parallel with the brush chamber and has an opening in a surface to be cleaned; It is characterized by rotating between states.

  ADVANTAGE OF THE INVENTION According to this invention, the vacuum cleaner and suction tool which were compatible with high dust collection performance and the outstanding cleaning property 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 Example 1. It is a bottom view of the suction tool of Example 1. It is a top view of the state which removed the upper part of the mouthpiece of the suction tool of Example 1. FIG. It is BB sectional drawing at the time of advance of the suction tool of FIG. It is BB sectional drawing at the time of the retreat of the suction tool of FIG. It is AA sectional drawing of the suction tool of FIG. It is a perspective view at the time of care of the suction tool of Example 1. FIG. It is a block diagram of the bottom face of the suction tool of Example 1. It is AA sectional drawing of the suction tool of Example 2. FIG.

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 connected to the hose portion 3 and provided with a hand operation switch SW and the like, an extendable tube 5 provided to be extendable and a mouthpiece 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, the present invention may be applied to a so-called paper pack type vacuum cleaner.

  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, to switch between strong, medium and weak, and to operate and stop the electric motor 40 (see FIG. 4) provided in the suction body 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 mouthpiece.

  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 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 body 11. . A flow path R (see FIG. 3) that connects the suction body 11 and the suction joint 13 is formed in the connecting portion 12.

  The mouthpiece main body 11 is provided with a bumper 11a from the front end surface to the left and right side surfaces. The bumper 11a is made of an elastic material such as rubber or elastomer, and ensures airtightness in the mouthpiece body 11 when used, and the mouthpiece body 11 collides with furniture or the like when the electric vacuum cleaner 1 (see FIG. 1) is used. When it does, it plays the role of the shock absorbing material which prevents the said furniture etc. from being damaged and absorbs the impact to the suction mouth main 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. 4) in which the axial direction is the left-right direction of the mouthpiece 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 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 body 6 may be supplied from the cleaner body 2 through the hose part 3, the operation tube 4, and the extension tube 5. 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 11 can be rotated approximately 90 degrees in any of the left and right directions, and cleaning can be performed with the left and right direction of the suction body 11 in the moving direction. Therefore, it is possible to clean by moving the mouthpiece 6 along the wall or inserting the mouthpiece 6 into a narrow gap.

  FIG. 3 is a bottom view of the mouthpiece.

  As shown in FIG. 3, the mouthpiece 6 includes a first rotary cleaning body 20 and a second 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. .

  The first rotary cleaning body 20 is disposed on the front side in the front-rear direction along the left-right direction of the suction body 11 and is rotatably supported in the brush chamber Q. Moreover, the 1st rotation cleaning body 20 is provided continuously from the one end side of the left-right direction (the axial direction of the 1st rotation cleaning body 20) of the suction inlet main body 11 to the other end side.

  The first 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 second rotary cleaning body 30 is smaller than the diameter of the first rotary cleaning body 20, is covered with a brush body, and is disposed rearward and parallel to the first rotary cleaning body 20. Further, the second rotary cleaning body 30 is provided continuously from one end side to the other end side in the left-right direction of the suction body 11 in parallel with the axial direction of the first rotary cleaning body 20.

  Moreover, the 2nd rotary cleaning body 30 has the axial part 30a (shaft) parallel to the rotating shaft 21 of the 1st rotary cleaning body 20, and the axial part 30a is rotatably supported by the suction case 10 (suction body 11). Has been. The second rotary cleaning body 30 is not driven by an electric motor, but is configured to rotate by frictional force with the surface to be cleaned M (see FIG. 5) when the suction body 6 is moved. It is. Thus, since the 2nd rotation cleaning body 30 is supported by the suction inlet main body 11 via the axial part 30a, the structure of the 2nd rotation cleaning body 30 can be simplified.

  The mouthpiece 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 mouthpiece case 10.

  The brush drive switch 16 is a switch that detects whether or not the lower surface of the suction body 6 is in contact with the surface to be cleaned M (cleaning surface), and is configured together with the wheel 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 protrudes from the suction case 10 and is not in contact with the surface to be cleaned M, the motor 40 (see FIG. 4) is driven by the control of the circuit board 50 (control board) (see FIG. 4). Is stopped, and the rotation of the first 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 first rotary cleaning body 20 rotates.

  The wheel 17 receives the stress of the forward / backward movement and rotational operation operated by the operation tube 4, and brings the bottom surface of the mouthpiece 6 into close contact with the surface to be cleaned (cleaning surface), thereby improving the operation performance of the mouthpiece 6. have.

  The bearing pressing member 31 supports the rotating shaft of the first rotary cleaning body 20 and one end of the shaft portion 30a of the second 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 first rotary cleaning body 20 and the other end of the shaft portion 30a of the second rotary cleaning body 30, and is locked to the suction case 10 so as to be removable (see FIG. (Not shown).

  FIG. 4 is a top view of the mouthpiece with the upper portion of the mouthpiece case 10 removed.

  As shown in FIG. 4, the mouthpiece 6 includes an electric motor 40 that drives the first rotary cleaning body 20 above the first rotary cleaning body 20 (see FIG. 3) and the second rotary cleaning body 30 (see FIG. 3). And a circuit board 50 for controlling the electric motor 40.

  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 suction mouth main body 11. The output shaft of the electric motor 40 extends toward one end side in the left-right direction, and is connected to the first rotary cleaning body 20 via a toothed belt 41 at one end portion (right end portion in the figure) in the suction body 11. Has been.

  The circuit board 50 is attached to the opposite side of the electric motor 40 in the left-right direction of the suction body 11. The circuit board 50 has a rectangular board 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).

  5 is a cross-sectional view taken along the line BB in FIG. In FIG. 5, 63 is a partition wall that separates the brush chamber Q and the airtight chamber P, 64 is a cover member that separates the second rotary cleaning body 30 and the airtight chamber P, and 60 is a flexible member that closes the gap between the cover member 64 and the cleaning surface M. This is a rear blade having characteristics. FIG. 7 is a cross-sectional view taken along the line AA in FIG. In FIG. 7, 62 is a flexible front blade that closes the gap between the front partition wall and the surface to be cleaned M (see FIG. 7).

  The cover member 64 covers a part of the suction port and increases the flow velocity of the suction air by narrowing the opening area, and at the same time increases the negative pressure of the airtight chamber P, thereby improving the dust collection performance of the suction tool. .

  The cover member 64 passes the shaft 65 through two concentric shaft holes 64a provided in the vicinity of the central portion in the left-right direction of the suction tool, and fits with the tab 10a provided in the suction case 10 to the suction tool. Are connected (see FIG. 7).

  FIG. 9 is a perspective view of the suction tool in a state where the cover member 64 is rotated around the shaft 65 until the cover member 64 does not cover the suction port. Since the cover member 64 can take two states of covering a part of the opening of the suction port and not covering it, and can be rotated to a state where the suction port is not covered, dust accumulated in the suction case Can be easily removed using a brush (like a toothbrush after use).

  FIG. 10 is a perspective view illustrating a method for fixing the rotation of the cover member 64. In FIG. 10, the cover member 64 prevents the rotation during the suction tool operation by passing the shaft portion 30 a of the second rotary cleaning body through the stop hole 64 b and restraining both end portions with the bearing members 31 and 32. .

  As shown in FIG. 5, the airtight chamber P has an opening (suction port) toward the surface to be cleaned M, and the other surface is surrounded by a partition wall of the suction tool housing, and the flow path shown in FIG. It is in fluid communication with R. In this airtight chamber P, the negative pressure can be increased by the front partition wall 63 and the cover member 64, so that the dust suction performance can be improved. In addition, the front partition wall 63 and the cover member 64 have a gap with the surface to be cleaned M of about 3 mm to 5 mm in order to prevent damage to the surface to be cleaned M. Since this gap can be closed without damaging the surface to be cleaned M, the negative pressure is further increased, and the suction performance can be improved.

  Moreover, the opening width L4 of a suction inlet can be narrowed because the cover member 64 covers a part of suction inlet. Thereby, the opening area which affects the negative pressure concerning a floor surface can be narrowed, the sticking to the to-be-cleaned surface M of a suction tool can be made small, and the operation resistance of a suction tool can be reduced.

When the suction body moves forward, the dust D1 in the front is scraped off by the first rotary cleaning body 20 and sent to the rear of the suction tool. At this time, the dust at the front center portion of the suction tool is once dammed up by the front blade 62, but flows through the portions (both ends) where the front blade 62 is not provided by the flow S1 toward the both ends of the suction port shown in FIG. It flows into the path R. At this time, the second rotary cleaning body 30 does not rotate by a rotation restricting means (not shown).
On the other hand, when the suction tool is retracted, as shown in FIG. 6, the rotation restricting means (not shown) is released, and the second rotary cleaning body 30 is rotated by the frictional force with the surface to be cleaned M. The rear dust D2 is sent to the front of the suction tool as the second rotary cleaning body 30 rotates. At this time, the dust at the rear end portions of the suction tool is once blocked by the rear blade 60, but the portion where the rear blade 60 is not provided is collected in the central portion by the flow S2 from the both ends of the suction body toward the center shown in FIG. It flows into the flow path R through (center part).

  Thus, by arranging the blades alternately in the left-right direction of the suction tool and the front-rear direction of the suction port, not only the negative pressure of the airtight chamber P is increased, but also within the suction tool width (the suction tool left-right direction). On the other hand, the dust located at the center and both ends) can be efficiently sucked into the suction tool both when the suction tool moves forward and backward.

  The second embodiment according to the present invention will be described below. In addition, since it is the same as that of the vacuum cleaner and suction tool of 1st Example except the structure demonstrated below, description is abbreviate | omitted.

  FIG. 10 is a cross-sectional view of the suction tool in the second embodiment, and is a view showing the same position as the AA cross section in FIG. 2 showing the suction tool of the first embodiment. The difference from the first embodiment is that a nozzle 67 isolated from the brush chamber and the suction port is provided behind the front blade or the partition provided at the center of the front partition 63, and the nozzle opening 67a is located below (to be cleaned). Open to the surface M), and due to the pressure difference between the inside of the airtight chamber P (negative pressure) and the outside air (atmospheric pressure), the airflow flows into the nozzle 67 through the suction port 68 and the space T, and the inside of the airtight chamber P In this structure, a high-speed air stream is discharged from the nozzle opening 67a provided to the surface M to be cleaned. Since the dust on the surface to be cleaned M is lifted and sucked by the high-speed airflow, the dust collection performance can be improved.

  The upper side of the suction port 68 is formed by a front edge 66a of an upper lid 66 attached to the upper surface of the suction tool. The upper lid 66 is disposed so as to completely cover the upper projection area of the suction port provided in the suction case. Thereby, even when a liquid such as water is applied from above, the liquid can be prevented from entering the space T and the nozzle 67.

  Further, by adopting a configuration in which the upper lid 66 is removable, it becomes easy to clean the dust accumulated on the front edge 66a and the suction port 68.

  In addition, when the opening area is 66a as U1, 68 as U2, and 67a as U3, it is desirable that U1> U2> U3, but this is not limited to this.

  In this embodiment, the case where the nozzle 67 is provided behind the front blade is described as an example in FIG. 11. However, the position of the nozzle 67 is not limited to this position. For example, it may be provided in front of the front blade, in front of the rear blade, or the like. Further, the front blade and the rear blade may not be provided.

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner 2 Vacuum cleaner main body 2a Electric blower 2b Dust collection part 6, Suction tool 10 Suction case 20 1st rotation cleaning body 30 2nd rotation cleaning body 40 Electric motor 50 Circuit board (control board)
60 Rear blade 62 Front blade 64 Rear partition wall 63 Front partition wall 65 Shaft 66 Top cover 67 Nozzle M Surface to be cleaned (floor surface)
Q Brush room P Airtight room

Claims (6)

  A scissor case and a waist case forming the suction tool main body, a cover member attached to the scissor case, a rotating brush having a shaft and a brush disposed around the shaft, and an electric motor for rotating the rotating brush, A brush chamber in which the rotating brush can be attached and detached, and a suction port that is located in parallel with the brush chamber and has an opening in a surface to be cleaned; The suction tool of the vacuum cleaner characterized by rotating between states.   The vacuum cleaner suction tool according to claim 1, wherein the cover member has a rotation shaft near the center of the suction tool.   The suction tool for a vacuum cleaner according to claim 1, wherein the cover member has a rotation shaft in the vicinity of the end of the suction tool.   The said cover member is attached to the suction case so that attachment or detachment is possible, It has a rotating shaft in the suction tool edge part vicinity, The one of Claim 1 thru | or 3 characterized by the above-mentioned. Vacuum cleaner suction tool.   A suction port for taking in air in the vicinity of the upper surface of the suction tool, and a nozzle whose opening is directed to the surface to be cleaned is placed in an airtight chamber composed of a front partition wall that isolates the brush chamber from the suction port and the cover member. The vacuum cleaner suction tool according to any one of claims 1 to 4, wherein the vacuum cleaner suction tool is provided.   An electric blower that generates a suction force, a vacuum cleaner main body having a dust collecting portion that collects dust, and a suction tool connected to the vacuum cleaner main body, wherein the suction tool is any one of claims 1 to 5. The vacuum cleaner as described in the item.

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