TW201943375A - Suction port body of electric vacuum cleaner and electric vacuum cleaner equipped with the same characterized in that the suction port body of electric vacuum cleaner can more certainly suck dusts in various sizes and is easy to handle - Google Patents

Abstract

To provide a suction port body which can more capable of sucking dusts in various sizes and is easy to handle, and an electric vacuum cleaner equipped with the same. A suction port body of electric vacuum cleaner is equipped with: a box body; a suction port which is installed at the bottom of the box body, which is communicated with the vacuum cleaner main body capable of generating suction force and is used to suck dusts; and movable tongue pieces which can be rotatably arranged at the front and the back of the suction port respectively corresponding to the box body. The movable tongue piece is equipped with: a contact rotation portion which can carry out a contact rotation with the ground when the box body moves forwards or backwards; and a tongue piece portion. An opening is formed between the tongue piece portion and the surface to be cleaned when the tongue piece portion is located at the front side of a moving direction corresponding to the suction port. When the tongue piece portion is located at the rear side of the moving direction, the opening is closed. When the opening is closed, the tongue piece portion pushes toward a counter side being moved of the box body corresponding to the surface to be cleaned in a state of inclinedly falling down. At the same time, the lowest portion of the tongue piece portion contacts with the surface to be cleaned or is located near the surface to be cleaned.

Description

Suction body of electric vacuum cleaner and electric vacuum cleaner provided with the same

The present invention relates to a suction nozzle body of an electric vacuum cleaner and an electric vacuum cleaner provided with the suction nozzle body.

A prior art in this technical field is Japanese Patent No. 6105886 (Patent Document 1). The mouthpiece of the electric vacuum cleaner disclosed in the publication includes a box that can move in the front-rear direction, a motor, and a rotating body that guides dust toward the downstream side by the drive of the motor that is rotatably disposed in the box. A suction port that faces the surface to be cleaned and sucks dust; and a cleaning member that is rotatably disposed before and after the suction port and rotates in the opposite direction of the suction port body by contact with the surface to be cleaned, The person located in the front side in the moving direction falls obliquely with respect to the suction port body and faces the lower side of the rotating body, while the person in the rear side in the moving direction stands relatively to the cleaned surface. [Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent No. 6105886

[Problems to be Solved by the Invention]

An object of the present invention is to provide a suction mouthpiece of an electric vacuum cleaner capable of reliably sucking dust of various sizes and being easy to operate, and an electric vacuum cleaner provided with the suction mouthpiece. [Solutions for solving problems]

The present invention is characterized by comprising: a box body having a suction port underneath; a suction port communicating with a cleaner body that generates suction force and sucking dust; and a movable tongue piece for the box body before and after the suction port, respectively. The movable tongue is rotatably disposed, and the movable tongue is provided with: a contact rotating part that rotates in contact with the ground when the box is moved forward and backward; and a tongue part that is cleaned with the aforementioned when the relative suction port is located forward of the moving direction. An opening is formed between the surfaces. When the opening is located at the rear side in the moving direction, the opening is closed. When the opening is closed, the tongue portion is inclined downward with respect to the surface to be cleaned. At the same time, the lowermost portion is in contact with the surface to be cleaned or Located near it. [Effect of the invention]

According to the present invention, it can be provided that, when the inhaler is moved forward and backward, a tongue piece located in front of the moving direction of the box will open, and an opening will be formed facing the surface to be cleaned, while being located behind the moving direction of the box The side tongue pieces are closed in a tilted state to ensure airtightness with the ground, thereby making it possible to reliably suck in dust of various sizes and to easily operate the suction nozzle body of the electric vacuum cleaner and the electric vacuum cleaner provided with the suction nozzle body.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. [Example 1]

Hereinafter, Embodiment 1 of the present invention will be described with reference to the drawings. Fig. 1 is an external view of an electric vacuum cleaner according to a first embodiment of the present invention. The electric vacuum cleaner 1 is composed of the following: a vacuum cleaner body 2; an operation tube 4 connected to the hose portion 3 and provided with a manual operation switch SW and the like; an extension tube 5 provided to be freely retractable; and an inlet body 6.

The vacuum cleaner body 2 includes an electric blower 2a that generates a suction force, a dust collection unit 2b, and the like that store dust collected by the suction force of the electric blower 2a. Furthermore, in this embodiment, a so-called cyclone-type electric vacuum cleaner is taken as an example for description, but it can also be applied to a so-called paper bag-type electric vacuum cleaner.

One end of the hose portion 3 is connected to the connection port 2 c of the cleaner body 2 so as to communicate with the dust collecting portion 2 b of the cleaner body 2. 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 4 a including a manual operation switch SW and the like, and a power supply terminal (not shown) for supplying power from the cleaner body 2. This power supply terminal is connected to a power supply terminal (not shown) provided at one end of the extension pipe 5.

By operating the manual operation switch SW of the operation tube 4, the electric blower 2a can be switched between running and stopping or strong, weak, and strong, and the motor 40 (see FIG. 5) provided in the suction body 6 can be driven and stopped.

The extension pipe 5 is provided with an outer pipe 5a and an inner pipe 5b, and one end of the inner pipe 5b is inserted into the other end of the outer pipe 5a and communicates with an unillustrated ventilation path provided inside the outer pipe 5a and the inner pipe 5b. Ways are connected, and the structure is freely scalable. In addition, FIG. 1 shows a state where the extension tube 5 is the shortest.

Fig. 2 is a top view of the mouthpiece. As shown in FIG. 2, the mouthpiece body 6 includes a mouthpiece housing 10 having a substantially T-shape in a plan view, and a mouthpiece joint 13 connected to the mouthpiece housing 10.

The mouthpiece housing 10 includes, in a plan view, a mouthpiece body 11 formed in an elongated shape toward the left-right direction (width direction), and a connection portion 12 connected to the mouthpiece joint 13 at a center portion of the mouthpiece body 11 in the left-right direction. A flow path R (see FIG. 3) is formed to communicate the mouthpiece body 11 and the mouthpiece joint 13 to the connection portion 12.

The suction mouth main body 11 is provided with bumpers 11 a from the front end surface to the left and right side surfaces. The shock absorber 11a can ensure the airtightness of the suction mouth body 11 during use, and when the electric vacuum cleaner 1 (refer to FIG. 1) is used, when the suction mouth body 11 collides with furniture, etc., it can play a role of avoiding damage and absorption of the furniture and the like The role of a cushioning material for the suction body 11.

The mouthpiece joint 13 includes a first connection portion 14 that is rotatably connected to the connection portion 12, and a second connection portion 15 that is rotatably connected to the first connection portion 14. The first connection portion 14 has a substantially D-shape in a plan view in FIG. 2, and includes a cylindrical shaft 14 a connected to the connection portion 12. This shaft 14a is the left-right direction of the suction nozzle main body 11, and both ends of the shaft 14a are supported by a bearing portion 12g (see FIG. 5) formed in the connecting portion 12. The first connection portion 14 is configured to be rotatable from a substantially parallel state to a substantially vertical state with respect to the ground (cleaning surface) M (see FIG. 4). That is, by rotating the first connecting portion 14 relative to the suction nozzle housing 10 with the shaft 14 a as a fulcrum, the extension tube 5 (refer to FIG. 1) can be substantially parallel to the ground M (refer to FIG. 4). And roughly vertical.

The second connection portion 15 is configured to be rotatable with respect to the first connection portion 14 in the left-right direction (clockwise and counterclockwise on the paper surface of FIG. 2) of the suction nozzle body 11. Thereby, for example, it is possible to fall from a state where the extension pipe 5 is substantially perpendicular to the ground M to a state where the extension pipe 5 is substantially parallel to the ground M. The second connection portion 15 is provided with a power supply terminal 15 a for supplying power. In addition, the electric vacuum cleaner 1 (refer to FIG. 1) of this embodiment is configured to supply electric power supplied to the suction nozzle body 6 from the cleaner body 2 via the hose portion 3, the operation tube 4, and the extension tube 5.

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 body 6 includes a rotary brush 20. The suction nozzle housing 10 (the suction nozzle main body 11) is formed with a brush chamber Q having an opening portion on the lower surface (the surface facing the cleaning surface), and a pressure equalizing chamber P having an opening portion (suction opening) on the same lower surface.

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

The rotary brush 20 includes a plurality of types of brushes 20a, 20b, and 20c such as brushes having different hardnesses, and each of the brushes 20a, 20b, and 20c is arranged in a spiral shape. Furthermore, in the embodiment of the present embodiment, a case where three types of brushes 20a, 20b, and 20c are provided is described as an example, but it is not limited to this, and may be two or less types, and may be four or more types. 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 can be added, and various appropriate changes can be made.

The side fixing bristles 70 and 71 are made of an elastic material such as a bristle body, and are arranged at both ends in the left-right direction of the suction nozzle housing 10 (the suction nozzle body 11). The side fixed bristles 70 and 71 increase the airtightness of the brush chamber Q and the pressure equalization chamber P by blocking the gap between the vicinity of the left and right ends of the mouthpiece housing 10 (the mouthpiece body 11) and the ground M, particularly It improves the dust collection performance of fine dust.

The mouthpiece body 6 includes a front tongue piece 76, a rear tongue piece 77, a brush drive switch 16, a wheel 17, and bearing pressing members 31 and 32 below the connecting portion 12 of the mouthpiece housing 10.

The front tongue piece 76 is constituted by: a tongue piece 76a extending in the axial direction (left-right direction); a forward contact turning portion 76b, 76c which receives a frictional force from the ground M and causes the front tongue piece portion 76a to rotate; and The shaft portion 76d and the front tongue piece 76 are arranged forward and parallel with respect to the rotary brush 20, and are continuously formed from one end side to the other end side in the left-right direction of the mouthpiece body 11 and are rotatably supported.

Similarly, the rear tongue is also composed of the following: a tongue 77a extending in the axial direction (left-right direction); a rear contact rotation portion 77b, 77c; and a shaft portion 77d that allows the rear tongue portion 77a to rotate. The rear tongue is arranged rearward and parallel to the 20 rotating brushes, and is continuously formed from one end side to the other end side of the suction mouth body 11 in the left-right direction and is rotatably supported.

The brush drive switch 16 is a switch that detects whether the lower surface of the mouthpiece body 6 is in contact with the ground M (cleaning surface), and is configured together with the wheel 16a. This wheel 16a is provided so that it may protrude a part from the lower surface of the suction case 10 (the connection part 12) by a spring means, such as a spring. When it is detected that the wheel 16a is ejected from the mouthpiece housing 10 without contacting the ground M, the driving of the motor 40 (refer to FIG. 5) is stopped by the control of the circuit substrate 50 (control substrate) (refer to FIG. 5), so that The rotation of the rotary brush 20 is stopped. In addition, when it is detected that the wheel 16a is pressed into contact with the ground M, the motor 40 is driven by the control of the circuit board 50 to rotate the rotary brush 20.

The wheel 17 has a function of improving the operability of the mouthpiece body 6 by making the bottom surface of the mouthpiece body 6 closely contact the ground M by the forward and backward movement operated by the operation tube 4 or by the stress of the rotation operation. In addition, the bearing cover member 31 supports the rotating shaft of the rotary brush 20 while covering parts of the mouthpiece housing 10 attached to the shaft portions 76d and 77d of the front tongue piece 76 and the rear tongue piece 77, and is fixed to the mouthpiece case using screws. Body 10. The bearing cover member 32 supports the rotary shaft of the rotary brush 20, and covers portions of the suction mouth housing 10 attached to the shaft portions 76d and 77d of the front tongue piece 76 and the rear tongue piece 77, and uses a locking mechanism (not shown) to It is detachably fixed to the suction case 10.

FIG. 5 is a top view of a state in which the upper portion of the suction mouth housing 10 of the suction mouth body 6 has been removed. As shown in FIG. 5, the suction nozzle body 6 includes a motor 40 that drives the rotary brush 20 and a circuit board 50 that controls the motor 40 above the rotary brush 20 (see FIG. 3).

The motor 40 is mounted on one end side in the left-right direction of the suction nozzle body 11. The output shaft of the electric motor 40 is arranged parallel to the left-right direction of the mouthpiece body 11. The output shaft of the 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 suction mouth body 11.

The circuit board 50 is mounted on the opposite side of the motor 40 in the left-right direction of the suction nozzle body 11. In addition, the circuit board 50 has a rectangular substrate whose long sides are arranged in the left-right direction, and the mounting surface is arranged in the suction nozzle body 11 with the vertical direction facing upward. Moreover, the mounting surface is not necessarily limited to the vertical direction facing up, and may be inclined with respect to the horizontal direction, or may be oriented toward the front-rear direction (vertical).

6 and 7 are cross-sectional views taken along the line A-A of FIG. 2. FIG. 6 shows a state in which the mouthpiece 6 is advanced, and FIG. 7 shows a state in which the suction body 6 is retracted. In FIG. 6, 63 is a front partition wall across the brush chamber Q and the pressure equalization chamber P, and 64 is a rear partition wall across the rear tongue 77 and the pressure equalization chamber P. In this embodiment, the front partition wall 63 constitutes the aforementioned first airtight retaining means, and the rear partition wall 64 constitutes the second airtight retaining means.

As shown in FIG. 6, the pressure equalizing chamber P has an opening (suction port) toward the floor M, and the other surfaces are surrounded by the partition wall of the suction port body frame, and communicate with the flow path R shown in FIG. 3. This pressure equalizing chamber P can increase the negative pressure by the front partition wall 63 and the rear partition wall 64.

When the mouthpiece body is advanced, the front tongue piece 76 rotates backward (backward in the direction of movement) by the frictional force between the front contact rotating portions 76b and 76c and the ground surface M, and is formed between the front tongue piece portion 76a and the ground surface M. Opening. Thereby, the relatively large dust D1 located in front of the mouthpiece body will be sucked into the brush chamber Q, agitated by the rotating brush 20, and then transported to the backside of the mouthpiece body. Then, it is sucked into the pressure equalizing chamber P through the gap between the front partition wall 63 and the floor M, and then flows into the flow path R (see FIG. 3).

In addition, the rear tongue piece 77 is rotated rearward (backward in the direction of movement) by the frictional force between the rear contact rotating portions 77b and 77c and the floor surface M, and the inside of the suction mouth is increased by contacting with the floor surface M or reducing the gap. It is airtight, and at the same time, the dust D1 sucked into the pressure equalization chamber P can be prevented from being scattered behind the suction port body 6. At this time, the rear tongue piece portion 77a is in contact with the mouthpiece housing 10, and is inclined toward the rear with respect to the vertical direction of the floor surface M. Therefore, the friction resistance between the mouthpiece body 6 and the floor surface M is small, and the mouthpiece body 6 can be easily carried out. Back and forth operations. In addition, depending on the material of the rear tongue piece portion 77a or the amount of contact between the ground surface M and the ground surface M, the friction resistance with the ground surface M may be small. In this case, the rear tongue piece portion 77a may not be inclined toward the rear.

When the mouthpiece body is retracted, it is rotated forward by the frictional force between the front contact rotating parts 76b and 76c and the ground M, and the air inside the mouthpiece is raised by contacting with the ground M or reducing the gap. At the same time, the dust D1 sucked into the pressure equalizing chamber P can be prevented from being scattered in front of the suction body 6. At this time, the front tongue piece portion 76a is in contact with the mouthpiece housing 10 and is inclined toward the front perpendicular to the floor surface M. Therefore, the friction resistance between the mouthpiece body and the floor surface M is small, and the mouthpiece body can be easily operated forward and backward. . In addition, the material of the front tongue piece portion 76a or the contact with the ground surface M may reduce the frictional resistance with the ground surface M. In this case, the front tongue piece portion 76a may not be inclined toward the rear.

In addition, the rear tongue piece 77 rotates forward (backward in the moving direction) by the frictional force between the rear contact rotating portions 77b and 77c and the ground surface M, and an opening is formed between the rear tongue piece portion 77a and the ground surface M. Thereby, the relatively large dust D2 located in front of the suction mouth body is sucked into the pressure equalizing chamber P through the gap between the rear partition wall 64 and the floor M, and then flows into the flow path R (refer to FIG. 4).

As described above, the following effects can be achieved: when the inhaler is moved forward or backward, the tongues located in front of the moving direction of the box are opened to form an opening relative to the surface to be cleaned, and at the same time behind the moving direction of the box The tongues on the sides are closed in a tilted state to ensure the tightness with the ground, so that dust of various sizes can be surely sucked in, and the mouthpiece body of the electric vacuum cleaner that is easy to operate and the mouthpiece are provided. Body of electric vacuum cleaner. [Example 2]

Hereinafter, a second embodiment of the present invention will be described with reference to FIG. 8. The same components as those in Example 1 are assigned the same reference numerals.

FIG. 8 is a perspective view of the mouthpiece body in the forward direction in the second embodiment. FIG. The front tongue piece portion 76Aa of the front tongue piece 76A has a convex portion 76Ae that partially closes an opening formed with respect to the floor surface M. Thereby, the dust D1 in the front can be sucked in through the opening, and at the same time, the airtightness inside the suction mouth body can be further improved. In addition, by gripping the ground surface M by bringing the convex portion 76Ae into contact with the ground surface M, the dust D1 that is closely attached to the ground surface M can be lifted up and easily sucked.

In this embodiment, the front tongue is described, but the same effect can be obtained by using the same structure for the rear tongue. [Example 3]

Hereinafter, Embodiment 3 of the present invention will be described with reference to FIG. 9. The same components as those in Example 1 are assigned the same reference numerals.

FIG. 9 is a perspective view of the mouthpiece body during the forward movement in the third embodiment. FIG. The tongue portion 76Ba of the front tongue piece 76B has a convex portion 76Be that partially closes an opening formed with respect to the ground surface M, and the convex portion 76Be includes a surface 76Bf substantially parallel to the ground surface M. Thereby, the dust D1 in the front is sucked in through the opening, and at the same time, the airtightness inside the mouthpiece body can be further improved, and the amount of the suction wind passing near the ground M will be increased by passing the suction wind passing surface 76Bf and the ground M , So you can easily inhale fine dust such as wheat flour or baking soda on the carpet.

In this embodiment, the front tongue is described, but the same effect can be obtained by using the same structure for the rear tongue. [Example 4]

Hereinafter, Embodiment 4 of the present invention will be described with reference to FIG. 10. The same components as those in Example 1 are assigned the same reference numerals.

Fig. 10 is a perspective view of the mouthpiece body when the fourth embodiment is advanced. The tongue portion 76Ca of the front tongue piece 76C has a convex portion 76Ce that partially closes an opening formed with respect to the ground surface M. The convex portion 76Ce includes a concave-convex portion 76Cg having a concave-convex shape in a direction parallel to the traveling direction. Thereby, the dust D1 in the front can be sucked in through the opening, and at the same time, the airtightness inside the mouthpiece body can be improved. Also, when the mouthpiece body is advanced, the dust D1 that collides with the convex portion 76Ce can be easily guided to the convex portion 76Cg Openings. With this, relatively large dust can be easily accelerated. In addition, the uneven portion 76Cg may have an inclined shape instead of the uneven shape.

In this embodiment, the front tongue is described, but the same effect can be obtained by using the same structure for the rear tongue. [Example 5]

Hereinafter, a fifth embodiment of the present invention will be described with reference to FIG. 11. The same components as those in Example 1 are assigned the same reference numerals.

FIG. 11 is a perspective view of the front tongue piece 76D. The front tongue piece 76D is formed by fitting a tongue piece portion 76Da as a separate member to a shaft portion 76Dd made of metal, stainless steel, or the like, and contacting the rotating portions 76Db, 76Dc. In this case, by providing irregularities such as a cross rib or an L-shaped rib in the shaft portion 76Dd, it is possible to prevent the tongue piece portion 76Da and the contact rotating portions 76Db, 76Dc from idling. When the contact rotating parts 76Db and 76Dc are formed of the same material, they can be fitted into the shaft part 76Dd as an integrated member, and integrally molded into the shaft part 76Dd. Therefore, the structure can be simplified, and assembly can be made easier.

In this embodiment, the front tongue is described, but the same effect can be obtained by using the same structure for the rear tongue. [Example 6]

Hereinafter, Embodiment 6 of the present invention will be described with reference to FIG. 12. The same components as those in Example 1 are assigned the same reference numerals.

FIG. 12 is a perspective view of the front tongue piece 76E. The front tongue piece 76E is formed by fitting the tongue rotating portion 76Eb and 76Ec formed of a soft member to the tongue piece portion 76Ea. The tongue piece portion 76Ea is formed of a hard member made of resin or metal. The shaft portion 76Ed is integrally formed. At this time, the shaft portion 76Ed is provided with irregularities such as a cross rib or an L-shaped rib, thereby preventing the contact rotating portions 76Eb and 76Ec from idling. By integrally molding the shaft portion 76Ed and the tongue piece portion 76Ea, a complicated manufacturing process such as insert molding is not required, and the molding process can be simplified. In addition, most soft members are more expensive than hard members. If only the contact and rotating parts 76Eb and 76Ec are formed of soft members, the amount of soft members can be reduced and costs can be reduced.

In this embodiment, the front tongue is described, but the same effect can be obtained by using the same structure for the rear tongue. [Example 7]

Hereinafter, a seventh embodiment of the present invention will be described with reference to FIG. 13. The same components as those in Example 1 are assigned the same reference numerals.

FIG. 13 is a perspective view of the rear tongue piece 77F. The rear tongue piece 77F is composed of a tongue piece portion 77Fa having a fitting portion 77e continuously provided along the axial direction, wherein the tongue piece portion 77Fa is integrally formed with a shaft portion 77Fd formed of a hard member made of resin or metal; And the contact rotating parts 77Fb and 77Fc formed by the soft member as independent individuals, wherein the contact rotating parts 77Fb and 77Fc are fitted into the sealing member 77Ff and the shaft portion 77Fd, and the sealing member 77Ff and the shaft portion 77Fd are fitted in the fitting合 77Fe.

By providing a sealing member 77Ff formed of a soft member or a bristle member at the front end of the tongue piece portion 77Fa, it is possible to reduce the opening of the floor M without damaging the floor M, and to improve the airtightness inside the mouthpiece body. In addition, by changing the sealing member 77Ff, the airtightness inside the mouthpiece body can be adjusted. Therefore, the degree of closeness to the ground can be adjusted according to the application or the model of the electric vacuum cleaner. Even electric vacuum cleaners having various forms and suction forces need not be changed The shape of the mouthpiece body enables easy handling.

In this embodiment, the rear tongue is described, but the same effect can be obtained by using the same structure for the front tongue. [Example 8]

Hereinafter, Embodiment 8 of the present invention will be described with reference to FIG. 14. The same components as those in Example 1 are assigned the same reference numerals.

FIG. 14 is a perspective view of a state where the bearing cover member 32 of the suction mouth housing 10 has been removed. A spring 100 is provided at the front end of the shaft portion 77Gd of the rear tongue piece 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 at the shaft portion 77Gd. As a result, the rear tongue piece 77G is pressed toward the rear while the mouthpiece body is not operated forward or backward, or the ground cannot be moved on the ground with a small resistance to the ground, and it is pressed toward the rear to reduce the orientation toward the mouthpiece body. Wind noise leaking from the rear.

In the present embodiment, a configuration in which the tongue is urged by a spring is described. However, if the tongue can be urged in the closed or open direction, it may be implemented by other means.

In this embodiment, the rear tongue is described, but the same effect can be obtained by using the same structure for the front tongue.

In this embodiment, the suction port body of the floor-mounted vacuum cleaner will be described, but the same effect can be obtained when it is applied to a suction port body of a so-called wireless upright vacuum cleaner.

1‧‧‧ Electric Vacuum Cleaner

2‧‧‧Vacuum cleaner body

2a‧‧‧ Electric blower

2b‧‧‧ Dust collection department

6‧‧‧ Suction body

10‧‧‧ Suction housing

20‧‧‧ rotating brush

76‧‧‧ front tongue

77‧‧‧ rear tongue

40‧‧‧Motor

50‧‧‧Circuit board (control board)

70, 71‧‧‧ Side fixing bristles of Example 1

M‧‧‧ Ground

Q‧‧‧Brush Room

P‧‧‧ equalizing chamber

FIG. 1 is a perspective view showing the overall appearance of an electric vacuum cleaner according to the present invention. FIG. 2 is a top view of the mouthpiece of Embodiment 1 of the present invention. FIG. 3 is a bottom view of the mouthpiece according to the first embodiment of the present invention. FIG. 4 is a side view of the mouthpiece according to the first embodiment of the present invention. FIG. 5 is a top view of a state where the upper side portion of the mouthpiece body according to Embodiment 1 of the present invention has been removed. FIG. 6 is a cross-sectional view taken along the line A-A when the mouthpiece body shown in FIG. 2 is advanced. FIG. 7 is a cross-sectional view taken along the line A-A when the mouthpiece body shown in FIG. 2 is retracted. FIG. 8 is a perspective view of the mouthpiece body in the forward direction in the second embodiment. FIG. 9 is a perspective view of the mouthpiece body in the forward direction in the third embodiment. FIG. 10 is a perspective view of the mouthpiece body in the forward direction in the fourth embodiment. FIG. 11 is a perspective view of the front tongue 76D. FIG. 12 is a perspective view of the front tongue piece 76E. FIG. 13 is a perspective view of the rear tongue 77F. FIG. 14 is a perspective view of a state where the bearing cover member 32 of the suction case 10 has been removed.

Claims (8)

A suction body of an electric vacuum cleaner and an electric vacuum cleaner provided with the same are characterized in that: a box body is provided with a suction port underneath; a suction port is connected to the cleaner body which generates suction force and sucks dust; and a movable tongue It is rotatably disposed in front of and behind the suction port with respect to the box body, and the movable tongue is provided with: a contact rotating part that rotates in contact with the ground when the box is advanced and retracted; and a tongue part, which When the relative suction port is located in the front side of the moving direction, an opening is formed with the surface to be cleaned, and when it is located in the back side of the moving direction, the opening is closed. When the tongue portion is closed, the opening is inclined relative to the surface to be cleaned. Down state, and at the same time, the lowermost part is in contact with or located near the surface to be cleaned. The suction mouthpiece of the electric vacuum cleaner and the electric vacuum cleaner provided with the suction mouthpiece described in the first patent application scope, wherein the tongue portion has at least one convex portion for partially closing the tongue portion when the tongue portion is opened. An opening formed between the surfaces to be cleaned. The suction mouthpiece of an electric vacuum cleaner and the electric vacuum cleaner provided with the said suction mouthpiece as described in the 2nd patent application range, Comprising: The said convex part has a lower surface substantially parallel to the surface to be cleaned. The suction mouthpiece of the electric vacuum cleaner and the electric vacuum cleaner provided with the suction mouthpiece described in the second item of the patent application scope, wherein the convex portion has a concave-convex shape or an inclined shape in a direction parallel to the traveling direction of the box. The suction mouthpiece of an electric vacuum cleaner as described in any one of claims 1 to 4 and the electric vacuum cleaner provided with the suction mouthpiece, wherein the movable tongue is fixed to the case and becomes a center of rotation. A shaft formed of a hard member made of resin or metal; and a contact rotating part formed of a soft member. The suction mouthpiece of an electric vacuum cleaner according to any one of claims 1 to 5, and the electric vacuum cleaner provided with the suction mouthpiece, wherein the movable tongue is formed by the tongue portion and a soft member. The contact rotation portion is formed by integrally forming a shaft formed by a resin or metal rigid member fixed to the case and serving as a rotation center. The suction mouthpiece of an electric vacuum cleaner according to any one of claims 1 to 6, and the electric vacuum cleaner provided with the suction mouthpiece, wherein the tongue piece portion is provided with a bristle member or a soft member at the front end. The suction mouthpiece of an electric vacuum cleaner according to any one of claims 1 to 7 and the electric vacuum cleaner provided with the suction mouthpiece, wherein at least one of the movable tongue pieces is provided with the movable tongue piece. Means to push the movable tongue in the open or closed direction of.