JP2018183466A - Suction port body for vacuum cleaner and vacuum cleaner comprising the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction port body for a vacuum cleaner, the suction port body providing good operability.SOLUTION: A suction port body for a vacuum cleaner includes: a rotary cleaning body including a slidably rubbing member for slidably rubbing a surface to be cleaned; a drive part for driving the rotary cleaning body; and a suction port body housing for housing the rotary cleaning body; where a rotary cleaning body pulley on the rotary cleaning body side and a drive part pulley on the drive part side are provided as means for transmitting drive power from the drive part to the rotary cleaning body and are connected using a belt therebetween. A drive part shaft insertion part for the drive part in the drive part pulley differs from a drive power transmission part in the drive part pulley.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a mouthpiece of a vacuum cleaner and a vacuum cleaner including the same.

At present, there are various types of vacuum cleaners, such as canister type and stick type, all of which have an electric blower, and the dust-containing air sucked from the floor suction body is directly or via an extension pipe or suction hose. Then, the air is guided to the cleaner body, dust is removed through a dust collector in the cleaner body, and the air purified by the dust removal is exhausted outside the cleaner body.
Further, the floor suction body has a rotating brush disposed in the suction chamber, and the rotating brush is driven to rotate by an electric motor. By rotating this rotating brush, the effect of scavenging and wiping dust on the floor surface is improved, and it is often configured to assist the operation by applying a forward force to the mouthpiece.

  As means for transmitting a driving force from the brush driving motor to the rotating brush, Patent Document 1 (Japanese Patent Laid-Open No. 2014-73422) includes a rotating cleaning body pulley on the rotating cleaning body and a driving section pulley on the driving section side. In addition, in the mouthpiece of the vacuum cleaner that connects between them with a belt, it has a bearing holding member that holds the drive pulley side bearing and the rotary cleaning body pulley side bearing, and the bearing holding member is separable from the mouthpiece housing. And the suction body of the vacuum cleaner characterized by covering at least one part among belts is disclosed.

JP 2014-73422 A

  In order to improve dust suction and operability on floors with high operating loads such as carpets, it is necessary to increase the torque of the motor installed on the floor suction body. By increasing the number of teeth on the body pulley (larger diameter side) or decreasing the number of teeth on the drive pulley (smaller diameter side), the transmission torque from the electric motor to the rotary cleaning body can be increased. However, when the number of teeth of the rotary cleaning body pulley is increased, the parts around the rotary cleaning body and the pulley are increased in size, and the outer shape and weight of the suction body may be increased, resulting in poor usability. In addition, if the number of teeth on the drive pulley is reduced, the root diameter of the pulley will be close to the drive shaft diameter on the motor side, and the pulley wall thickness will be very thin, or the root circle diameter will be less than the drive shaft diameter. ， There is a possibility that it becomes impossible to install the pulley.

  An object of the present invention is to provide a mouthpiece of a vacuum cleaner with good operability and a vacuum cleaner using the same.

  A rotary cleaning body having a rubbing member that rubs the surface to be cleaned; a drive unit that drives the rotary cleaning body; and a suction body housing that houses the rotary cleaning body. As means for transmitting the driving force, a rotary cleaning body pulley is provided on the rotary cleaning body side, a driving part pulley is provided on the driving part side, and a suction mouth of an electric vacuum cleaner connected with a belt therebetween, the driving part of the driving part pulley includes: The drive part shaft insertion part is different from the drive force transmission part in the drive part pulley.

  ADVANTAGE OF THE INVENTION According to this invention, the mouthpiece of a vacuum cleaner with good operativity and a vacuum cleaner using the same 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 mouthpiece by a present Example. It is a bottom view of the mouthpiece by a present Example. It is a top view of the state which removed the upper part of the mouthpiece by a present Example. It is AA sectional drawing of the suction body as described in FIG. 2 by a present Example. It is a component expanded view of the mouthpiece by a present Example. It is a component expanded view of the drive part of the suction mouth by a present Example. It is BB sectional drawing of the mouthpiece as described in FIG. 4 by a present Example. It is CC sectional drawing of the mouthpiece of FIG. 2 by a present Example. It is a disassembled perspective view of the electric motor 40 vicinity by a present Example.

  Embodiments according to the present invention will be described below with reference to the drawings.

(Body configuration)
FIG. 1 shows an external view of a vacuum cleaner according to an 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 other types of vacuum cleaners provided with so-called suction force generating means.

  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.

(Composition of mouthpiece)
FIG. 2 is a top view of the mouthpiece.
As shown in FIG. 2, the mouthpiece 6 includes a mouthpiece case 10 that has a substantially T shape in a top view and a mouthpiece joint 13 that is connected to the mouthpiece 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 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 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 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.

(Composition of joint)
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.

(Configuration of mouthpiece bottom)
FIG. 3 is a bottom view of the mouthpiece.
As shown in FIG. 3, the mouthpiece 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. .

(Configuration of rotating cleaning body)
The 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. The rotary cleaning body 20 is continuously provided from one end side to the other end side in the left-right direction of the suction body 11 (the axial direction of the rotary cleaning body 20), and is driven by the electric motor 40 (see FIG. 7). (Details will be described later). The electric motor 40 can be selected between “run” and “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 electric 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. 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.

(Configuration of micro switch)
The brush drive switch 16 is a switch that detects whether or not the lower surface of the mouthpiece 6 is in contact with the surface to be cleaned M, and is configured 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 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.

(Configuration of the bottom of the mouthpiece 2)
The wheel 17 has a role of improving the operating performance of the suction body 6 by bringing the bottom surface of the suction body 6 into close contact with the surface M to be cleaned in response to the stress of the forward and 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 a top view of the mouthpiece with the upper portion of the mouthpiece case 10 removed. As shown in FIG. 4, the suction body 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.

(Configuration of electric motor)
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. Further, the output shaft 42 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 end portion on the right side in the drawing) in the suction body 11. ing.

(Configuration of pulley)
FIG. 5 is a cross-sectional view taken along line AA in FIG. As shown in FIG. 5, the drive part of the suction body 6 includes a drive part pulley 43 (small diameter side) on the motor side, a rotary cleaning body pulley 44 (large diameter side) on the rotary cleaning body 20 side, a toothed belt 41, and a toothed side. A tension pulley 45 is used to increase the winding angle of the belt.

In FIG. 6, the components expanded view of the suction mouth 6 in a present Example is shown. The drive unit pulley 43, the rotary cleaning body pulley 44, the toothed belt 41, and the tension pulley 45 are assembled into the bearing holder 46, and then assembled together with the motor 40 into the lower suction body case 11c.
FIG. 7 is a development view of components of the suction body drive unit. A bearing 40a is provided on the output shaft 42 of the electric motor 40, and a bearing 44a is provided on the shaft of the rotary cleaning body pulley 44. Transmission of the rotational force to the rotary cleaning body 20 is connected to the rotary cleaning body pulley 44 through the shaft. The fitting portion 44b rotates integrally with the fitting portion 44b, and the fitting portion 44b can be attached to and detached from the rotating cleaning body side fitting portion 44c.
FIG. 8 shows a BB cross section of FIG. The drive pulley 43 is attached to the output shaft 42 of the electric motor 40 by press fitting, and the drive pulley 43 is made of a material such as metal. FIG. 10 shows an exploded perspective view of the vicinity of the electric motor 40.

  The drive section pulley 43 includes a substantially cylindrical mounting section (driving section shaft insertion section) 43a serving as a mounting section with the output shaft (driving section shaft) 42, a through hole 43b penetrating from the outer section of the mounting section 43a to the inner diameter, A gear portion (driving force transmission portion) 43c that meshes with the toothed belt and a projection 43d are provided. That is, in the drive pulley 43, the attachment portion 43a and the gear portion 43c are different portions. In other words, in the drive pulley 43, the position of the drive shaft insertion part 43a does not include the drive force transmission part 43c. In the present embodiment, the case where the mounting portion 43a is substantially cylindrical has been described as an example. However, the present invention is not limited thereto, and any shape that can be press-fitted into the output shaft 42 on the inside may be used. The outer shape may be a polygonal column shape and can be changed as appropriate.

  A through hole 43b that communicates the inside and outside of the mounting portion 43a is provided near the bottom surface of the mounting portion 43a (near the gear portion side of the mounting portion 43a). When press-fitting the attachment portion 43a of the drive pulley 43 into the output shaft 42, air can be released from the through hole 43b. In the present embodiment, the through hole 43b is a circular hole perpendicular to the central axis of the mounting portion 43a. However, the shape of the hole is polygonal as long as it allows the air to escape when the output shaft 42 is press-fitted. Moreover, as long as the attachment part 43a inner diameter side and external air communicate, it may penetrate in any direction.

  The gear portion 43c is provided in a portion different from the attachment portion 43a, and the insertion portion of the output shaft 42 and the gear portion 43c are separated. Therefore, the gear portion 43 c can be solid, and the shape can be determined without being limited by the shaft diameter of the output shaft 42. Thereby, compared with the case where the attachment part and the gear part are not separated, the number of teeth of the drive part pulley 43 can be reduced, and the reduction ratio can be increased to improve the torque. Further, a substantially cylindrical projection 43d that is concentric with the output shaft 42 is provided at the end portion on the gear portion 43c side, and instead of the end portion of the output shaft 42 housed in the mounting portion 43a by press-fitting. , Can receive bearings. In this embodiment, the protrusion 43d has the same diameter as the output shaft 42. However, since the end of the drive unit pulley 43 only needs to be received by a bearing or the like, the same as the output shaft 42 if it is coaxial with the output shaft 42. It does not have to be a diameter.

  The outer diameter of the attachment portion 43a is larger than the diameter of the output shaft 42, and the diameter of the gear portion 43c is smaller than the outer diameter of the attachment portion 43a. The diameter of the gear portion 43c may be the same as or smaller than the diameter of the output shaft 42.

  According to the present invention, since the number of teeth of the drive unit pulley can be reduced regardless of the mounting shaft diameter, the reduction ratio is increased without increasing the size of the suction body, and the torque of the rotary cleaning body is increased. Is possible. Thereby, the mouthpiece of a vacuum cleaner with good operability can be provided. That is, since the drive unit shaft insertion position of the drive unit pulley does not include the drive force transmission unit of the drive unit pulley, it is possible to increase the reduction ratio and increase the torque of the rotary cleaning body. Thereby, a vacuum cleaner with good operability can be provided even on a floor surface with a high operation load.

(Substrate structure)
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).

(Highly airtight structure)
9 is a cross-sectional view taken along the line CC in FIG. In FIG. 9, 63 is a partition wall that separates the brush chamber Q and the airtight chamber P, and 64 is a cover member that separates the second rotary cleaning body 30 and the airtight chamber P. The cover member 64 covers a part of the suction port to increase 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 body. . Moreover, the opening width L of a suction inlet can be narrowed because the cover member 64 covers a part of suction inlet. Thereby, the opening area which influences the negative pressure concerning a floor surface can be narrowed, the sticking to the floor surface of a suction body can be made small, and the operation resistance of a suction body can be reduced.

  The embodiment according to the present invention has been described with reference to the drawings as appropriate. However, the present embodiment is not limited to the above contents, and can be implemented with appropriate modifications within the scope of the gist of the present invention. .

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner 2 Vacuum cleaner main body 2a Electric blower 2b Dust collection part 6 Suction body 10 Suction case 11 Suction body 20 First rotary cleaning body 30 Second rotary cleaning body 40 Electric motor 50 Circuit board (control board)
63 Front partition 64 Cover member M Surface to be cleaned (floor surface)
Q Brush room P Airtight room

Claims (5)

A rotary cleaning body having a rubbing member that rubs the surface to be cleaned; a drive unit that drives the rotary cleaning body; and a suction body housing that houses the rotary cleaning body. As a means for transmitting the driving force, in the suction body of the vacuum cleaner, which is provided with a rotary cleaning body pulley on the rotary cleaning body side, a driving section pulley on the driving section side, and a belt connected therebetween,
The suction mouthpiece of the vacuum cleaner, wherein a drive portion shaft insertion portion of the drive portion in the drive portion pulley is different from a drive force transmission portion in the drive portion pulley.   The mouthpiece of an electric vacuum cleaner according to claim 1, wherein the drive pulley has a substantially cylindrical convex portion that is substantially concentric with the drive shaft at the gear side end. The mouthpiece of an electric vacuum cleaner according to claim 1 or 2, wherein the drive pulley has at least one through hole in the vicinity of the hollow bottom surface. A rotary cleaning body, a drive unit that drives the rotary cleaning body, and a suction body housing that houses the rotary cleaning body and the drive unit;
The drive unit includes a drive unit shaft,
As means for transmitting driving force from the drive unit to the rotary cleaning body, the rotary cleaning body pulley is connected to the rotary cleaning body side, the drive part pulley is connected to the drive part side, and the rotary cleaning body pulley and the drive part pulley are connected. A belt, and
The drive pulley includes an attachment portion attached to the drive portion shaft, and a gear portion meshing with the belt,
The mouthpiece of the vacuum cleaner, wherein a diameter of the gear portion is smaller than a diameter of the mounting portion.   The vacuum cleaner provided with the suction body of the vacuum cleaner of any one of Claims 1 thru | or 3.

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