JP2019188117A - Suction hole body of vacuum cleaner and vacuum cleaner comprising the same - Google Patents

Abstract

To provide a suction hole body of a vacuum cleaner which can more surely suck various sizes of dust, which is light and which is excellent in operativity and a vacuum cleaner comprising the same.SOLUTION: A suction hole body comprises: a case body having a suction hole on a lower face; a suction hole communicated to a vacuum cleaner body for generating suction force and sucks dust; and movable flaps which are arranged on a front/rear side of the suction hole in a rotatable state to the case body. The movable flaps comprise: a contact rotation part which contacts a floor face and rotates in forward/backward movement time of the case body; and a flap part which forms an opening between it and a cleaned surface when it is positioned on a movement direction front side to the suction hole, and closes the opening when it is positioned on a movement direction rear side, the flap part is energized to the cleaned surface in a state of being inclined and fallen to an opposite-of-movement side of the case body, when the opening is closed, and a lowermost part of the flap part contacts the cleaned surface or is positioned in the vicinity of the cleaned surface.SELECTED DRAWING: Figure 3

Description

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

  As a background art in this technical field, there is Japanese Patent No. 6105886 (Patent Document 1). The mouthpiece of the electric vacuum cleaner disclosed in this publication has a case body movable in the front-rear direction, an electric motor, and is rotatably arranged on the case body and driven by the electric motor to move dust to the downstream side. A rotating body that leads to the surface to be cleaned, a suction port that opens and sucks dust, and a rotational direction of the suction body by contact with the surface to be cleaned, which is rotatably arranged before and after the suction port. And the one located on the front side in the moving direction is inclined to the suction port body so as to face the lower side of the rotating body and the one located on the rear side in the moving direction with respect to the surface to be cleaned. And a cleaning member that stands up.

Japanese Patent No. 6105886

  SUMMARY OF THE INVENTION An object of the present invention is to provide a vacuum cleaner mouthpiece that is capable of suctioning dust of various sizes, more and more reliably and that is light in operability, and a vacuum cleaner including the same.

  A case body having a suction port on the lower surface, a suction port that communicates with a vacuum cleaner main body that generates suction force, and a movable flap that is arranged to be rotatable with respect to the case body before and after the suction port; The movable flap is provided between a contact rotation portion that rotates in contact with the floor surface when the case body moves forward and backward, and the surface to be cleaned when positioned on the front side in the movement direction with respect to the suction port. A flap portion that forms an opening and closes the opening when positioned on the rear side in the movement direction, and the flap portion is inclined to the surface to be cleaned when the opening is closed, and The lowermost part is in contact with or near the surface to be cleaned.

  According to the present invention, the flap located on the front side in the movement direction of the case body opens and forms an opening with respect to the surface to be cleaned, and the flap located on the rear side in the movement direction of the case body both when the suction body moves forward and backward Closed in a tilted state to ensure a tight seal with the floor, it is possible to suck dust of a large and small size more securely, and has a vacuum cleaner mouthpiece that is light in operability and this 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 mouth of Example 1 which concerns on this invention. It is a bottom view of the suction mouth of Example 1 which concerns on this invention. It is a side view of the suction mouth of Example 1 which concerns on this invention. It is a top view in the state where the upper part of the mouthpiece of Example 1 concerning the present invention was removed. It is AA sectional drawing at the time of advance of the mouthpiece described in FIG. It is AA sectional drawing at the time of retraction of the mouthpiece described in FIG. FIG. 10 is a perspective view of a mouthpiece during advance of Example 2. FIG. 6 is a perspective view of a mouthpiece during advance of Example 3. It is a perspective view of the suction mouth body at the time of advance of Example 4. It is a perspective view of front flap 76D. It is a perspective view of the front flap 76E. It is a perspective view of back flap 77F. FIG. 3 is a perspective view of the suction case 10 with a bearing pressing member 32 removed.

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

  A first embodiment according to the present invention will be described below with reference to the drawings. The external view of the vacuum cleaner which concerns on FIG. 1 at Example 1 of this invention is shown. 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, the electric blower 2 a can be operated and stopped, switched between strong and weak, and the electric motor 40 (see FIG. 5) provided on the suction body 6 can be operated and stopped. 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 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 main body 11 is provided with a bumper 11a from the front end surface to the left and right side surfaces. The bumper 11a ensures airtightness in the mouthpiece main body 11 during use, and prevents damage to the furniture etc. when the mouthpiece body 11 collides with furniture etc. during use of the vacuum cleaner 1 (see FIG. 1). It plays the role of a cushioning material that absorbs the impact on 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 D 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. 5) in which the axial direction is the left-right direction of the inlet 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 rotation from the substantially parallel state with respect to the floor surface (cleaning surface) M (refer FIG. 4) to a substantially perpendicular state is possible. 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 pipe 5 (see FIG. 1) is substantially perpendicular to the state substantially parallel to the floor M (see FIG. 4). It can be rotated between different 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 floor surface M from a state in which the extension pipe 5 is substantially perpendicular to the floor surface 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.

  FIG. 3 is a bottom view of the mouthpiece. FIG. 4 is a side view of the mouthpiece. As shown in FIGS. 3 and 4, the mouthpiece 6 includes a rotating brush 20. 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 a pressure equalizing chamber P having an opening (suction port) on the lower surface. .

  The rotating brush 20 is disposed on the front side in the front-rear direction along the left-right direction of the mouthpiece body 11 and is rotatably supported in the brush chamber Q. The rotating brush 20 is provided continuously from one end side to the other end side in the left-right direction (the axial direction of the rotating brush 20) of the suction body 11.

  The rotating brush 20 includes a plurality of types of brushes 20a, 20b, and 20c such as brushes having different hardnesses, and the brushes 20a, 20b, and 20c are arranged in a spiral shape. In the present embodiment, the case where three types of brushes 20a, 20b, and 20c are disposed has been described as an example. However, the present invention is not limited to this and may be two or less types. There may be four or more types, and a configuration in which a blade member made of an elastic material such as rubber is arranged in a spiral shape between brushes arranged in a spiral shape may be added as appropriate.

  The side fixed brushes 70 and 71 are made of an elastic material such as a brush body, and are disposed at both ends of the suction case 10 (suction body 11) in the left-right direction. The side fixing brushes 70 and 71 improve the airtightness of the brush chamber Q and the pressure equalizing chamber P by closing the gap between the suction case 10 (suction body 11) and the floor surface M near both ends in the left-right direction. Improves dust collection performance.

  The mouthpiece 6 includes a front flap 76, a rear flap 77, 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 front flap 76 includes a flap 76a extending in the axial direction (left-right direction), front contact rotating portions 76b and 76c that receive a frictional force from the floor surface M and allow the front flap portion 76a to rotate. It is comprised by 76d, is arrange | positioned ahead and parallel with respect to the rotating brush 20, and is supported so that it can rotate continuously from the one end side of the left-right direction of the suction inlet main body 11 to the other end side.

  Similarly, the rear flap is constituted by a flap 77a extending in the axial direction (left-right direction), rear contact rotation portions 77b and 77c, and a shaft portion 77d that allows the rear flap portion 77a to rotate. It arrange | positions back and parallel with respect to the rotating brush 20, and is supported so that rotation is continuously possible from the one end side of the left-right direction of the suction inlet main body 11 to the other end side.

  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 floor surface 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 has jumped out of the suction case 10 and is not in contact with the floor M, the electric motor 40 (see FIG. 5) is driven by the control of the circuit board 50 (control board) (see FIG. 5). The rotation of the rotating brush 20 is stopped. When it is detected that the wheel 16a is pushed into contact with the floor surface M, the electric motor 40 is driven by the control of the circuit board 50, and the rotating brush 20 rotates.

  The wheel 17 receives the stress of the forward / backward movement and the rotation operation operated by the operation tube 4 and has the bottom surface of the mouthpiece 6 closely attached to the floor surface M, thereby having a role of improving the operation performance of the mouthpiece 6. Yes. The bearing retainer 31 supports the rotating shaft of the rotary brush 20 and simultaneously covers the portions attached to the suction case 10 of the shaft portions 76 d and 77 d of the front flap 76 and the rear flap 77. It is fixed using. The bearing pressing member 32 supports the rotating shaft of the rotating brush 20 and simultaneously covers the portions attached to the suction case 10 of the shaft portions 76d and 77d of the front flap 76 and the rear flap 77, so that the suction mouth can be removed. It is fixed to the case 10 using a lock mechanism (not shown).

  FIG. 5 is a top view of the mouthpiece 6 with the upper portion of the mouthpiece case 10 removed. As shown in FIG. 5, the suction body 6 includes an electric motor 40 that drives the rotating brush 20 and a circuit board 50 that controls the electric motor 40 above the rotating brush 20 (see FIG. 3).

  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 of the electric motor 40 extends toward one end side in the left-right direction, and is connected to the rotary brush 20 via a toothed belt 41 at one end portion (the right end portion in the drawing) in the mouthpiece body 11. .

  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).

  6 and 7 are cross-sectional views taken along the line AA in FIG. 2. FIG. 6 shows the mouthpiece 6 when it is moving forward, and FIG. 7 shows when it is moving backward. In FIG. 6, 63 is a front partition that separates the brush chamber Q and the pressure equalizing chamber P, and 64 is a rear partition that separates the rear flap 77 and the pressure equalizing chamber P. In this embodiment, the front partition 63 constitutes the first hermetic holding means, and the rear partition 64 constitutes the second hermetic holding means.

  As shown in FIG. 6, the pressure equalizing chamber P has an opening (suction port) toward the floor surface M, and the other surface is surrounded by the partition wall of the suction body housing, and the flow path shown in FIG. It is in fluid communication with R. The pressure equalizing chamber P can increase the negative pressure by the front partition wall 63 and the rear partition wall 64.

  When the mouthpiece moves forward, the front flap 76 is rotated rearward (backward in the movement direction) by the frictional force between the front contact rotation portions 76b and 76c and the floor surface M, and between the front flap portion 76a and the floor surface M. An opening is formed in Thereby, relatively large dust D1 located in front of the mouthpiece is sucked into the brush chamber Q, scraped off by the rotating brush 20, and sent to the rear of the mouthpiece. Then, the air is sucked into the pressure equalizing chamber P through the gap between the front partition wall 63 and the floor surface M, and flows into the flow path R (see FIG. 3).

  On the other hand, the rear flap 77 is rotated rearward (backward in the movement direction) by the frictional force between the rear contact rotation portions 77b and 77c and the floor surface M, and is brought into contact with the floor surface M or by reducing the gap. While improving airtightness inside a suction mouth, it can suppress that dust D1 attracted | sucked in the pressure equalization chamber P is spilled to the back of the suction body 6. FIG. At this time, the rear flap 77a is in contact with the mouthpiece case 10 and is inclined rearward with respect to the vertical direction of the floor surface M. Therefore, the frictional resistance between the mouthpiece 6 and the floor M is small, and the front and rear of the mouthpiece 6 The operation can be performed lightly. Further, depending on the material of the rear flap portion 77a and the contact allowance of the floor surface M, the frictional resistance with the floor surface M may be small. At this time, the rear flap portion 77a does not have to be inclined backward.

  When the mouthpiece moves backward, the front contact turning portions 76b and 76c and the floor surface M are rotated forward (backward in the movement direction) by the friction force between them and come into contact with the floor surface M, or the gap is reduced to reduce the inside of the mouthpiece. The dust D1 sucked into the pressure equalizing chamber P can be prevented from being spilled forward of the mouthpiece 6. At this time, the front flap portion 76a comes into contact with the suction case 10 and is inclined forward with respect to the vertical direction of the floor surface M, so that the frictional resistance between the suction body and the floor surface M is small, and the front and rear operations of the suction body can be performed. Can be done lightly. Further, depending on the material of the front flap portion 76a and the contact allowance of the floor surface M, the frictional resistance with the floor surface M may be small. At this time, the front flap portion 76a does not have to be inclined backward.

  On the other hand, the rear flap 77 is rotated forward (backward in the movement direction) by the frictional force between the rear contact rotation portions 77b and 77c and the floor surface M, and an opening is formed between the rear flap portion 77a and the floor surface M. Form. Thereby, relatively large dust D2 located in front of the suction body is sucked into the pressure equalizing chamber P through the gap between the rear partition wall 64 and the floor M, and flows into the flow path R (see FIG. 4).

  As described above, the flap located on the front side in the movement direction of the case body opens and forms an opening with respect to the surface to be cleaned while the suction body moves forward and backward, and the flap located on the rear side in the movement direction of the case body Closed in a tilted state to ensure a tight seal with the floor, so that it is possible to suction dust more reliably for large and small dust, and equipped with a vacuum cleaner mouthpiece that is light in operability and this There exists an effect that a vacuum cleaner can be provided.

  A second embodiment according to the present invention will be described below with reference to FIG. In addition, the same number is attached | subjected to the same structure as Example 1. FIG.

  FIG. 8 is a perspective view of the mouthpiece during advancement of the second embodiment. The front flap portion 76Aa of the front flap 76A has a convex portion 76Ae that partially closes an opening formed with respect to the floor surface M. Thereby, while dust D1 ahead can be attracted | sucked from opening, the airtightness inside a suction body can be improved more. Further, by bringing the convex portion 76Ae into contact with the floor surface M, the floor surface M is scratched, so that the dust D1 stuck to the floor surface M can be floated and easily sucked.

  In the present embodiment, the front flap has been described, but the same effect can be obtained even if a similar structure is adopted for the rear flap.

  Embodiment 3 according to the present invention will be described below with reference to FIG. In addition, the same number is attached | subjected to the same structure as Example 1. FIG.

  FIG. 9 is a perspective view of the mouthpiece during advancement of the third embodiment. The flap portion 76Ba of the front flap 76B has a convex portion 76Be that partially closes an opening formed with respect to the floor surface M, and the convex portion 76Be includes a substantially parallel surface 76Bf of the floor surface M. As a result, the front dust D1 can be sucked from the opening, and the airtightness inside the mouthpiece can be further increased, and the suction air passes between the surface 76Bf and the floor surface M so as to pass near the floor surface M. Since the amount of suction air increases, fine dust such as flour and baking soda spread on the carpet can be easily sucked.

  In the present embodiment, the front flap has been described, but the same effect can be obtained even if the same structure is applied to the rear flap.

  A fourth embodiment according to the present invention will be described below with reference to FIG. In addition, the same number is attached | subjected to the same structure as Example 1. FIG.

  FIG. 10 is a perspective view of the mouthpiece during advancement of the fourth embodiment. The flap portion 76Ca of the front flap 76C has a convex portion 76Ce that partially closes an opening formed on the floor surface M, and the convex portion 76Ce has an uneven shape with respect to a direction parallel to the traveling direction. The uneven portion 76Cg is provided. As a result, the dust D1 in the front can be sucked from the opening, and the airtightness inside the mouthpiece can be further increased, and the dust D1 that collides with the convex portion 76Ce when the mouthpiece is advanced is led to the opening by the concave and convex portion 76Cg. It becomes easy. Thereby, it is possible to make it easier to rush relatively large dust. The uneven portion 76Cg may have an inclined shape instead of the uneven shape.

  In the present embodiment, the front flap has been described, but the same effect can be obtained even if the same structure is applied to the rear flap.

  Embodiment 5 according to the present invention will be described below with reference to FIG. In addition, the same number is attached | subjected to the same structure as Example 1. FIG.

  FIG. 11 is a perspective view of the front flap 76D. The front flap 76D is configured by fitting a flap portion 76Da and contact rotation portions 76Db and 76Dc made of different members to a metal shaft portion 76Dd made of metal, stainless steel, or the like. At this time, it is possible to prevent the flap portion 76Da and the contact rotation portions 76Db and 76Dc from slipping by providing the shaft portion 76Dd with irregularities such as a cross rib and an L-shaped rib. When the contact rotation portions 76Db and 76Dc are formed of the same material, they may be fitted to the shaft portion 76Dd as an integrated part, or they may be integrally formed on the shaft portion 76Dd by insert molding. Can be simplified and the assemblability is improved.

  In the present embodiment, the front flap has been described, but the same effect can be obtained even if the same structure is applied to the rear flap.

  A sixth embodiment according to the present invention will be described below with reference to FIG. In addition, the same number is attached | subjected to the same structure as Example 1. FIG.

  FIG. 12 is a perspective view of the front flap 76E. The front flap 76E is configured by fitting separate contact rotating portions 76Eb and 76Ec formed of a soft member to a flap portion 76Ea formed by integrating a shaft portion 76Ed formed of a resin or metal hard member. The At this time, it is possible to prevent the contact rotation portions 76Eb and 76Ec from slipping by providing the shaft portion 76Ed with irregularities such as a cross rib and an L-shaped rib. By integrating the shaft portion 76Ed and the flap portion 76Ea, a complicated manufacturing process such as insert molding can be eliminated, and the molding process can be simplified. In addition, the soft member is often more expensive than the hard member, and by forming only the contact rotation portions 76Eb and 76Ec from the soft member, the usage amount of the soft member can be reduced and the cost can be reduced.

  In the present embodiment, the front flap has been described, but the same effect can be obtained even if the same structure is applied to the rear flap.

  Embodiment 7 according to the present invention will be described below with reference to FIG. In addition, the same number is attached | subjected to the same structure as Example 1. FIG.

  FIG. 13 is a perspective view of the rear flap 77F. The rear flap 77F is fitted to the fitting portion 77Fe on a flap portion 77Fa having a fitting portion 77e provided continuously in the axial direction, in which a shaft portion 77Fd formed of a resin or metal hard member is integrated. The seal member 77Ff and the contact rotation portions 77Fb and 77Fc are formed by a separate soft member fitted to the shaft portion 77Fd.

  By providing the sealing member 77Ff formed of a soft member or a brush member at the tip of the flap portion 77Fa, the opening of the floor surface M can be reduced without damaging the floor surface M, and the airtightness inside the mouthpiece can be increased. Moreover, since the airtightness inside the suction body can be adjusted by changing the seal member 77Ff, the sticking to the floor surface is adjusted according to the application and the model of the vacuum cleaner, and various forms and electric power having suction power are provided. Even in a vacuum cleaner, light operability can be realized without changing the shape of the mouthpiece body.

  Although the rear flap has been described in this embodiment, the same effect can be obtained even if the same structure is applied to the front flap.

  Embodiment 8 according to the present invention will be described below with reference to FIG. In addition, the same number is attached | subjected to the same structure as Example 1. FIG.

  FIG. 14 is a perspective view of the suction case 10 with the bearing retainer 32 removed. A spring 100 is provided at the tip of the shaft portion 77Gd of the rear flap 77G. One end of the spring is in contact with the suction case 10, and the other end is in contact with a rib 77Gh provided on the shaft portion 77Gd. As a result, the rear flap 77G is not moved in the state in which the mouthpiece is not operated forward or backward, or is not movable on the floor surface with a small floor resistance, and is biased rearward with the opening with the floor surface M closed, and the wind is leaked to the rear of the mouthpiece. Sound can be reduced.

  In this embodiment, the configuration in which the flap is urged by the spring has been described. However, other means may be used as long as the flap can be urged in the closing direction or the opening direction.

  Although the rear flap has been described in this embodiment, the same effect can be obtained even if the same structure is applied to the front flap.

  Further, in the present embodiment, the mouthpiece of the floor moving type vacuum cleaner has been described, but the same effect can be obtained when applied to the mouthpiece of a so-called cordless stick type vacuum cleaner.

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 20 Rotating brush 76 Front flap 77 Rear flap 40 Electric motor 50 Circuit board (control board)
70, 71 Side fixed brush according to Example 1 M Floor surface Q Brush chamber P Pressure equalizing chamber

A case body having a suction port on a lower surface, the suction port and the suction port of the movable flap arranged pivotably relative to each of the case body before and after sucking the dust communicating with the cleaner main body for generating a suction force with the door, the movable flap, during reverse travel and during forward of the case body and the contact rotating part in contact with the floor surface are formed from a soft material so as to be rotated, when located in the moving direction forward relative to inlet An opening is formed between the surface to be cleaned and a flap portion that closes the opening when positioned on the rear side in the movement direction, and the flap portion is inclined with respect to the surface to be cleaned when the opening is closed. While being in a collapsed state, the lowermost part is in contact with or near the surface to be cleaned, and the flap portion of the front flap disposed in front of the suction port of the movable flap is formed of a hard member. , The movable frame Rear flap disposed behind flop the suction port is characterized by having a soft member.

A case body having a suction port on the lower surface, the suction port communicating with the vacuum cleaner main body that generates suction force, and a movable flap disposed so as to be rotatable with respect to the case body before and after the suction port. The movable flap includes a contact rotation portion formed of a soft member that rotates in contact with the floor surface when the case body is moving forward and backward, and a cover that is covered when the case body is positioned on the front side in the movement direction with respect to the suction port. An opening is formed between the cleaning surface and a flap portion that closes the opening when positioned on the rear side in the movement direction, and the flap portion is inclined with respect to the surface to be cleaned when the opening is closed. The flap portion of the front flap disposed in front of the suction port of the movable flap is a resin or metal hard member. form only Is, rear flap which are arranged behind the suction port of the movable flap, characterized in that it comprises only the soft member.

Claims (6)

  A case body having a suction port on the lower surface, a suction port that communicates with a vacuum cleaner main body that generates suction force, and a movable flap that is arranged to be rotatable with respect to the case body before and after the suction port; The movable flap is provided between a contact rotation portion that rotates in contact with the floor surface when the case body moves forward and backward, and the surface to be cleaned when positioned on the front side in the movement direction with respect to the suction port. A flap portion that forms an opening and closes the opening when positioned on the rear side in the movement direction, and the flap portion is inclined to the surface to be cleaned when the opening is closed, and A mouthpiece of a vacuum cleaner, wherein the lowermost portion is in contact with or near the surface to be cleaned, and a vacuum cleaner comprising the same.   2. The vacuum cleaner according to claim 1, wherein the flap portion includes at least one convex portion that partially closes an opening formed between the surfaces to be cleaned when the flap portion is opened. Mouthpiece and vacuum cleaner provided with the same.   3. The mouthpiece of an electric vacuum cleaner according to claim 2, wherein the convex portion has a surface substantially parallel to the surface to be cleaned at a lower portion thereof, and an electric vacuum cleaner including the same.   3. The mouthpiece of an electric vacuum cleaner according to claim 2, and the electric vacuum cleaner including the same, wherein the convex portion has an uneven shape or an inclined shape in a direction parallel to the traveling direction of the case body.   5. The movable flap according to claim 1, wherein the movable flap is formed of a soft member and a shaft formed of a resin or metal hard member fixed to the case body and serving as a rotation center. The mouthpiece of the vacuum cleaner of any one of Claims 1, and a vacuum cleaner provided with the same.   The movable flap is fixed with respect to the case body, the flap portion formed by integrating a shaft formed of a resin or metal hard member serving as a rotation center, and the contact formed of a soft member. 6. A vacuum cleaner mouthpiece according to any one of claims 1 to 5, and a vacuum cleaner comprising the same.

Images