JPH08206043A - Suction port of vacuum cleaner - Google Patents

Abstract

PURPOSE: To provide a suction port of an vacuum cleaner, which can perform suction of the dust and dirt certainly. CONSTITUTION: A suction opening 13 is left open to the floor surface (the side with the surface to be cleaned) and put in communication with one side of a suction duct 16 formed inside a body case 2 (the body part), while a suction window 17 having a housing groove 18 (mounting part) is furnished in the front embankment 11 (front wall part) of the suction opening 13. A sealing member 10 having a core 23 (part to be mounted) and a plate-form seal part 27 installed to the core 23 through a bend 26 and equipped with a projection at the front is installed in the groove 18 through the core 23, and the window 17 is opened and closed by the sealing member 10 through utilization of the bend. Thus a suction mouth of an electric vacuum cleaner is accomplished.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port body used in a vacuum cleaner.

[0002]

2. Description of the Related Art Conventionally, a suction port body used in an electric vacuum cleaner is connected to an extension pipe connected to a suction hose connected to the suction port of the electric vacuum cleaner at the time of cleaning. Cleaning is performed by moving the surface to be cleaned, that is, the floor surface in the front-rear direction via the. Then, in order to surely and efficiently suck the dust existing on the floor surface, a suction window portion is provided on the lower front side of the suction port body, and a plate-shaped sealing member is provided in this suction window portion to prevent the suction port body from being sucked. The suction window is opened and closed by rotating it in accordance with the movement in the front-back direction. The conventional suction inlet constructed in this manner is shown in FIGS.
This will be described with reference to FIG.

As shown in the figure, a suction port body 100 includes a main body case 110, a rotary brush 120 rotatably disposed in the main body case 110 via a shaft 120a, and a main body 11.
It is composed of a rotary tube 115 rotatably provided at 0 and a seal member 150 provided on the front side of the main body.

The main body case 110 comprises a lower case 130 and an upper case 140, and both cases 130, 1
Reference numeral 40 is a structure in which a bumper 114 is interposed and coupled, and a front bank portion 131, that is, a front wall and a rear bank portion 1 formed on the lower surface of the lower case 130 so as to be separated from each other in the front-rear direction.
32 are provided, and these front bank 131 and rear bank 132
A groove-shaped suction opening 133 which is formed by the front bank portion 131 and the rear bank portion 132 and has an opening on the floor side is provided between and. Further, the rotary brush 120 is rotatably disposed above the suction opening 133. The rotating brush 120 is driven by a driving means such as a motor (not shown). The upper case 1
A lid 140a is detachably attached to the 40.

Further, on the rear side of the main body case 110, the above-mentioned rotary tube 115 is attached rotatably and airtightly held by an upper case 130 and a lower case 140. Then, the suction opening 133 and the rotary tube 1
15 is in communication with the suction air passage 116, and the dust sucked from the suction opening 133 is in the suction air passage 11
It is sucked by the electric blower in the electric vacuum cleaner (not shown) through the inside of the rotary pipe 115 through the nozzle 6. At this time, the rotary brush 1 is rotated by the rotation of the rotary brush 120.
The dust inside the carpet or tatami mat is scraped out and sucked by the brush member 120b provided on the outer periphery of 20.

A suction window 131a is formed in the front bank 131 so as to communicate with the suction opening 133, and a storage groove 131b is formed at the upper end of the suction window 131a. A shaft hole (not shown) is formed at both ends of the storage groove 131b. A seal member 150 is provided on the suction window portion 131a. The sealing member 150 is formed of a material having shape retention property made of synthetic resin, and has a mounting portion 152 having a shaft hole 151 in the upper portion in the figure, and projections 154 and 154 provided integrally with the mounting portion 152 at both front end portions. And a plate-shaped seal portion 153 in which is formed. The seal member 150 has a support shaft 155, which has a diameter smaller than that of the shaft hole 151 of the mounting portion 152, and has both ends of the support shaft 155 formed at both ends of the storage groove 131b. The storage groove 13 is fixed by fixing by press fitting or the like.
1b is rotatably provided in the suction window portion 131a, and is rotated in accordance with the movement of the suction port body 100, and the suction window portion 13 is rotated.
1a is opened and closed.

The front bank 131 of the lower case 130
A pair of traveling wheels 135 provided on both sides of the front bank 131 so as to form a suction gap G between the lower end surface of the front bank 131 and the floor surface F which is the surface to be cleaned. The rear bank 132 is also provided with a pair of traveling wheels 141 so as to form a suction gap G between the lower end surface and the floor surface of the rear bank 132. The seal portion 153 of the seal member 150 and the tip of the protrusion 154 are provided so as to contact the floor surface when the traveling wheels 135 and 141 are in contact with the floor surface.

When cleaning, the suction port body 100 is used.
Is to move or move in the front-back direction on the floor surface F to perform cleaning. At this time, when the suction port body 100 is operated so as to move in the front direction, the seal portion 153 and the protrusion of the seal member 150 are provided. Since the tip of 154 is in contact with the floor surface, the support window 155 is rotated counterclockwise in FIG. 18 to a position indicated by a chain double-dashed line A in FIG. In order to open the portion 131a, large dust on the front side of the front bank 131 is sucked into the suction window 131a.
Is sucked from the suction opening 133, the suction air passage 11
6 and the rotary tube to be sucked into the dust collecting chamber of the electric vacuum cleaner. Further, when the suction port body 100 is operated to move rearward, the sealing member 150 is rotated clockwise by its own weight in accordance with this operation, and its tip end comes into contact with the floor surface F,
At this time, the seal member 150 is kept in the contact state at the position shown by the alternate long and two short dashes line B by the rotation preventing member (not shown) from being rotated further, and the suction window 131a is closed.
50, and the outside, that is, the front side of the seal member 150 and the suction opening 133 are blocked by the seal member 150, so that the suction force of the floor surface F of the portion corresponding to the suction opening 133 is increased and the fine dust is reliably sucked. It is a thing.

[0009]

As described above, in the suction port body 100 of the conventional vacuum cleaner, the support shaft 1 is attached to the suction window portion 131a of the front bank 130 of the suction port body 100 during cleaning.
The seal member 150 is rotatably provided by 55, and the front bank portion 130 is responsive to the traveling operation of the suction port body 100 during cleaning.
The suction window 131a formed in the above is opened / closed, opened, or shielded by the seal member 150 so that large dust and fine dust can be sucked in reliably and efficiently. However, in the above-mentioned conventional structure, the seal member 150 is rotatably attached to the support shaft 155 fixedly attached to the storage groove 131b of the suction window 131a through the shaft hole 151 provided in the attachment portion 152. Therefore, when used for a long time, the shaft hole 151 and the support shaft 1
Dust enters and adheres to the sealing member 15
0 does not rotate smoothly, and the seal member 150 does not open or shield the suction window portion 131a in accordance with a traveling operation at the time of cleaning, and the state remains open or shielded. Even if the smooth rotation is blocked as described above, the operation from the closed state to the open state causes the projection to open due to the frictional force with the floor surface F when the suction port body 100 is moved forward. However, since the return from the open state to the shielded state is performed by the weight of the seal member 150 itself, the weight of the seal member 150 itself is small, so that the shield member 150 cannot return to the shielded state by its own weight. However, there is a problem that the suction force becomes weak and the dust cannot be sucked in reliably. Moreover, the problem that the seal portion 153 abnormally enters the suction opening side and rubs against the rotating brush 120 to cause wear of the seal member. Further, when the floor surface F is a carpet, the projection 153 slides on the floor surface F. There was a problem of contact and wear.

[0010]

The present invention solves the above-mentioned problems of the prior art. The invention according to claim 1 communicates with one side of a suction air passage formed inside, and the surface to be cleaned side. A main body having a suction opening having an opening and a suction window having a mounting portion on a front wall portion of the suction opening, and a plate-shaped member provided with an attached portion and a bent portion having elasticity in the attached portion. A seal member which has a seal portion and a protrusion formed on the front side of the seal portion and which is attached to the main body portion by opening and closing the suction window portion by attaching the attached portion to the attachment portion; A suction port body of an electric vacuum cleaner, comprising: a connection pipe communicating with the other side of the air passage; and the invention according to claim 2, wherein the surface to be cleaned communicated with one side of the suction air passage formed inside. Suction window having a side opening and a mounting portion on the front wall of the suction opening And a main body having a blocking body provided in the vicinity of the suction opening side of the suction window, an attached portion, a plate-like seal portion provided on the attached portion, and a protrusion formed on the front side of the seal portion. And a connecting member communicating with the other side of the suction air passage, the seal member being rotatably attached to the main body portion by opening and closing the suction window portion by attaching the attached portion to the attachment portion. The suction port body of an electric vacuum cleaner comprising: a suction opening body communicating with one side of a suction air passage formed inside; A suction window portion having a mounting portion on the front wall portion of the opening, and at least one tip portion provided near the suction opening side of the front wall portion so as to be located at a substantially intermediate portion between the front bank portion and the suction window portion. And a mounted portion and the mounted portion. A plate-shaped seal portion having a notch for allowing passage of the wear preventing body, and by attaching the attached portion to the attachment portion, the attachment portion is rotatably attached to the main body portion and the suction window portion is opened and closed. A suction port body of an electric vacuum cleaner, comprising: a sealing member for connecting to the suction air passage; and a connection pipe that communicates with the other side of the suction air passage, and the invention according to claim 4 is the invention according to claim 1 to claim 3. The seal member according to the present invention is formed of rubber, and the attached portion is integrally formed by integrally forming a mount base and a core material having a melting point higher than the molding temperature of the seal member along the longitudinal direction of the mount. A suction port of a vacuum cleaner, and the invention according to claim 5 is such that the seal member in the invention according to claims 1 to 3 is formed of rubber, and the attached portion thereof is a mounting base portion and this mounting base. A holding member for holding the section The suction port body of the electric vacuum cleaner formed by.

[0011]

The invention according to claim 1 configured as described above,
Since the opening and closing of the suction window of the seal member is performed by bending the elastic bending portion, the opening and closing can be surely performed without causing malfunction due to dust, and the invention according to claim 2 is the suction opening of the seal member. It is possible to prevent abnormal intrusion into the inside, and the invention according to claim 3 can prevent abrasion of the protrusion of the seal member. Further, according to the invention according to claim 4, the seal member is formed of elastic rubber. Wear can be prevented, deformation due to contraction of the attached portion can be prevented, and attachment to the attachment portion can be ensured. Further, according to the invention of claim 5, the seal member formed of elastic rubber is attached. The elastic deformation of the portion can be prevented, and the attachment to the attachment portion can be ensured.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the invention described above will be described with reference to FIGS.
It will be described based on 5. First, claim 1 and claim 2
The described invention will be described with reference to FIGS. 1 to 9.

As shown in FIGS. 1 to 3, the suction port body 1
Is a body case 2 as a body part in which the lower case 2a and the upper case 2b are joined by a screw (not shown) via a bumper 3, and is rotationally driven by a driving means such as a motor (not shown) provided in the body case 2. The rotary brush 4, a rotary tube 5 as a connecting tube rotatably provided on the main body case 2, and a seal member 10 provided on the front side of the main body case 2. And the inlet body 1
Is the traveling direction, that is, the rotary tube 5 as shown in FIGS.
Has a short side in the axial direction and a long side in the left-right direction, that is, the direction orthogonal to the traveling direction. In the following description, the side on which the rotary tube 5 is provided is the rear side and the side opposite to the side on which the rotary tube 5 is provided is the front side.
In addition, a direction orthogonal to the traveling direction will be referred to as a left-right direction or a longitudinal direction, and a side facing the floor surface will be referred to as a downward direction and a vertical direction will be described.

On the lower surface of the lower case 2a, there are provided a front bank portion 11 and a rear bank portion 12 as front walls which are formed apart from each other in the front-rear direction. A groove-shaped suction opening 13 having a floor surface F side as a surface to be cleaned formed of a carpet, a tatami mat, a floor board, or the like is formed between the two. Further, the rotary brush 4 is rotatably arranged by a shaft 4b so as to face the opening of the suction opening 13, and the rotary brush 4 is rotationally driven by the driving means (not shown). A lid 8 is detachably attached to the upper case 2b.

Further, on the rear side of the main body case 2, partition walls 6b, 6 provided on the upper case 2b and the lower case 2a, respectively.
The above-mentioned rotary tube 5 is attached so as to be rotatable in the direction of the arrow in FIG. 2 by a rotary shaft 5a that is rotatably supported by bearings 7b and 7a formed by being divided into a. The suction opening 13 and the rotary pipe 5 communicate with each other through a suction air passage 16, and the dust sucked from the suction opening 13 passes through the suction air passage 16 into the rotary pipe 5 and is not shown. It is designed to be sucked by an electric blower in the electric vacuum cleaner and collected in the dust collection chamber. At this time, dust inside the carpet or tatami mat is scraped out by the rotation of the rotary brush 4 by the brush member 4a formed of brush bristles or a blade made of soft rubber provided on the outer peripheral portion of the rotary brush 4. Sucked. The rotary brush 4 is not always necessary and may be omitted depending on the size or the application.

The front bank 11 is provided with a suction window portion 17 which is formed by a cutout on the lower side, that is, a cutout which opens downward so as to communicate with the suction opening 13.
At the upper end of the suction window portion 17, the storage groove 1 as a mounting portion is provided.
8 are formed. Further, the storage groove 18 is formed in a substantially U-shaped cross section as shown in FIG. 8 and has a front groove wall 18b.
On the lower end of the rear groove wall 18a, a pair of locking claws 20 facing each other are provided so as to project in the facing direction, and the pair of locking claws 20 are provided at a plurality of positions along the longitudinal direction of the storage groove 18. It is provided in. Further, the suction opening 13 and a plurality of blocking projections 21 as blocking bodies formed by projecting downward from the lower end of the groove wall 18a on the rear side of the storage groove 18 are provided at predetermined intervals. There is.

The suction window 17 is provided with the seal member 10 made of rubber having elasticity. As shown in FIG. 7, the sealing member 10 is provided with a mounting base 24 having a rectangular cross section in which a core member 23 made of a metal rod as a core member is embedded in the upper part by integral molding in the upper part. A plurality of cutout grooves 25 are provided in the core 24 so that the buried core member 23 is exposed all around. The core member 23 exposed in the cutout groove 25 constitutes a mounted portion of the seal member 10. A bent portion 26 that is directed downward and is thin is formed on the lower side of the mounting portion 24. The bent portion 26 has a thickness larger than that of the bent portion 26, and as shown in FIG. A plate-shaped seal portion 27 that is inclined to the suction opening 13 side by an angle Q is integrally formed with the portion 26, and a protrusion 28 is integrally formed on the front side of the seal portion 27 at a position corresponding to the blocking protrusion 21. Is formed in. In addition, the seal portion 27
A plurality of slits 27a for sucking dust on the front side of the seal portion 27 are formed in the. The protrusion 28 is provided so as to correspond to the blocking protrusion 21, and the slit 27 is provided.
By providing a, when the protrusion 28 receives a pressing force from the floor surface F, the tip portion of the seal portion 27 is held substantially linearly in the longitudinal direction without bending in a wavy shape with respect to the floor surface F,
The tip portion of the seal portion 27 maintains a uniform gap with the floor surface F over the entire length so that uniform suction can be performed.

The core member 23 exposed in the cutout groove 25 is accommodated in the accommodating groove 18 via a holding member 30 made of synthetic resin having a shape-retaining property for holding the core member 23. And can be installed. As shown in FIGS. 9 (A) and 9 (B), the holding member 30 has a rectangular cross section that matches the cross section of the storage groove 18 so as to be stored in the storage groove 18, and has a hinge portion 31 on the upper portion. It has a pair of left and right sandwiching pieces 32 with a line passing through the hinge portion 31 as a center line. Inside the sandwiching pieces 32, when the sandwiching pieces 32 are aligned with each other, the core member 23 is formed. Semicircular grooves 32a are formed so as to sandwich the outer circumference of each. And the holding body 30
As shown in FIG. 9B, the attachment of the
Both holding pieces 32 are separated from each other around the hinge 31, the core member 23 is opened in the groove 32a, and then the two holding pieces 32 are closed. And
In this mounted state, the holding member 30 is attached to the mounting base 24.
When it is pushed into the storage groove 18 together with it, the locking claw 20 provided in the storage groove 18 engages with the edge of the holding member 30, that is, the holding piece 32, so that the seal member 10 is prevented from slipping out into the storage groove 18. Along with that, it is fixed and attached. The seal member 10 may be attached to the housing groove 18 directly by the core member 23 without using the sandwiching member 30, but when the sandwiching member 30 is used, the outer diameter of the core member 23 may be increased. Can be made smaller, which facilitates molding and is advantageous in terms of cost.

Further, the lower case 2a is provided on both sides of the front bank portion 11 so as to slightly project from the lower end surface so that a suction gap G is formed between the lower surface of the front bank portion 11 and the floor surface F. A pair of traveling wheels 35 provided for traveling are provided on the rear bank portion 12 so that a suction gap G is formed between the lower end surface of the rear bank portion 12 and the floor surface F. Wheels 34 are formed.

The seal member 10 has a storage groove 18
When attached to the wheel 3, that is, in the free state, the tip portion of the seal portion 27 and the tip portion of the protrusion 28 are located at the wheel 3
The dimensional relationship is such that it projects slightly below the line connecting the lower ends of 5 and 34. Therefore, when the suction port body 1 is placed on the floor surface F and the wheels 35 and 34 are in contact with the floor surface F, that is, in a stationary state, the tip of the seal portion 27 and the protrusion 28 are provided.
The tip portion of is lightly pressed against the floor surface F.
In addition, in the free state, the tip portion of the protrusion 28 is attached to the seal portion 27.
As a dimensional relationship in which the suction port body 1 is projected slightly more than the tip end portion of the above, a small gap is formed between the tip end portion of the seal portion 27 and the floor surface F when the suction port body 1 is placed on the floor surface F in a stationary state, The suction wind may flow from this gap.

In cleaning, the suction port body 1 is operated so as to run or move in the front-back direction on the floor surface F, but when the suction port body 1 is placed on the floor surface F, it is shown in FIG. As described above, the tips of both the seal portion 27 and the protrusion 28 are lightly pressed against the floor surface F. If the suction port body 1 is operated to move forward in this state, that is, in the direction of arrow A, the floor surface F is attached to the tip portions of the seal portion 27 and the protrusion 28.
Friction force acts on the seal portion 27, and the seal portion 27 bends at the bending portion 26 and pivots rearward, and as shown in FIG. Is separated from the floor surface F, and the seal portion 27 opens the suction window portion 17. With this opening, the suction airflow from the slit-like notch 27a gathers in the front side of the seal portion 27 in the shielding state. The dust is sucked through the suction window portion 17. At this time, since the suction window portion 17 is opened, even large dust is surely sucked. If the suction port body 1 is operated to move rearward, that is, in the direction of the arrow B from this state, the seal portion 27 causes the friction force between the protrusion 28 and the floor surface F and the elastic action of the bent portion 26 to cause the floor surface F to move. It rotates to the side, and then its front end rotates to the front by the frictional force received from the floor surface F. Then, as shown in FIG.
The tip end of 8 is separated from the floor surface F, and the tip end of the seal portion 27 moves while keeping contact with the floor surface F, that is, while slidingly contacting the floor surface F. That is, since the seal portion 27 is in a state of blocking or closing the suction window portion 17, the seal portion 2
The suction airflow from the front side of 7 is only from the notch 27a,
The suction force on the floor surface F at the portion corresponding to the suction opening 13 becomes strong, and fine dust is surely sucked.

As described above, when the suction port body 1 is moved forward and backward during cleaning, the seal portion 27 of the seal member 10 is bent at the bending portion 26 and rotated forward and backward in response to the running operation. Since the suction window portion 17 is opened and closed, large dust and fine dust can be sucked reliably and efficiently. Further, since the rotation of the seal portion 27 is performed by the bending of the bending portion 26, the malfunction of the rotation operation due to the adhesion of dust does not occur, and the seal member 10 has elasticity. The return from the open state to the shielded state is made by the elastic force of itself, and the opening and closing is surely performed.

If, for example, paper or cloth (not shown) is sucked into the suction opening 13 during cleaning, the paper or the like is strongly sucked into the suction opening 13, and at this time, the seal portion 27 is placed inside the paper and the like. That is, the tip end of the seal portion or the tip end of the protrusion 28 in some cases is abnormally bent toward the rotating brush 4 side, and the tip end portion of the protrusion 28 is the brush member 4 of the rotating brush 4.
Although a situation occurs in which the end of the seal portion 27 and the protrusion 28 or the brush member 4a of the rotary brush 4 is damaged by contacting a, as described above, the lower side of the rear groove wall 18a of the suction window portion 17 is not affected. Since the blocking projections 24 are formed, the seal portion 2 can be used even when paper or the like is stuck.
The rotation of 7 is restricted by the blocking projection 21 and does not rotate abnormally. Therefore, as shown in FIG. 6, a gap is formed between the locus indicated by the chain double-dashed line through which the tip of the brush member 4a of the rotary brush 4 passes and the tip of the seal portion 27, and the two are mutually separated. There is no contact, and damage to the tip portions of the seal portion 27 and the protrusion 28 or the brush member 4a can be prevented.

The reason why the seal member 10 is made of rubber is that synthetic resin such as soft vinyl chloride is thermoplastic as in the conventional case, and therefore, while the suction port body 1 is being cleaned, it can be moved during running operation. This is to prevent the situation in which the tip portion of the protrusion 28 melts due to frictional heat generated by friction with the floor surface F. In addition, the mounting base 2 of the seal member 10
The reason why the core member 23 is buried in the seal member 4 is that the seal member 10
When the material is rubber, the mounting base 24 is easily deformed and easily comes off the storage groove 18 during cleaning. Therefore, by embedding the core member 23, the thickness of the rubber that is easily deformed is reduced, This is to prevent the mounting base 23 from being deformed. Further, the reason why the core member 23 is a metal rod is that it is necessary to use a material having a melting point at which the core member does not melt due to the molding temperature when the rubber material is added to mold the seal member 10. Therefore, the core member 23 may be made of a material other than a metal material as long as the material has a melting point that does not melt at the molding temperature. Further, the core member 23 is attached to the mounting base 24.
By burying the slab by integral molding, it is possible to prevent contraction of the mounting base portion 24 after molding and also prevent dimensional errors from occurring.

Further, when the seal member 10 is made of rubber, the means for preventing the mounting base portion 24 from being deformed and mounting it in the housing groove 18 can be configured as shown in FIGS. That is, a mounting base portion 24a having a rectangular cross section as a mounted portion is formed continuously with the bent portion 26 of the seal member 10, and the groove 37a is inserted into the bent portion 26 while matching the sectional shape of the mounting base portion 24a. A holding member 37 formed by bending a metal plate so as to form a shape is fitted from one end side of the mounting base portion 24a so as to have shape retention, and the holding groove 18 is provided via the holding member 37.
It is to be attached to. Further, in the above case, the mounting base portion 24a and the holding member 37 constitute a mounted portion. The rest of the configuration is the same as that of the above-described embodiment, and the same parts are designated by the same reference numerals and the description thereof is omitted. Further, the holding member 37 is the seal member 10.
Since it is fitted and attached after forming
A material having shape retention property may be formed of synthetic resin having a melting point lower than the molding temperature of the seal member 10.
When the sandwiching member 35 is attached to the mounting base portion 24a in this way, when the seal member 10 is made of rubber having abrasion resistance, it is not necessary to integrally form the core member at the time of molding, and the molding efficiency is improved. You can Further, the problem that the material of the core member is limited to a metal or the like having a heat resistant material is also eliminated.

In the above embodiment, the projection 21 as the blocking member is provided below the rear groove wall 18a of the storage groove 18 of the suction window portion 17, but the position of the projection 21 is not limited to this. Instead, any position may be used as long as it is in the vicinity of the suction window part 17 and can prevent the abnormal rotation of the seal part 27. If the purpose is only to prevent the abnormal rotation of the seal portion 27, the seal portion 27 that opens and closes the suction window portion 17 may have a shape-retaining property. May be composed of a conventional shaft and shaft hole.

Next, an embodiment of the invention described in claim 3 will be described with reference to FIGS. 13 to 15. Since the configuration other than the portion related to the configuration of the present invention is the same as that of the above-mentioned embodiment, the same portions as those of the above-mentioned embodiment are designated by the same reference numerals and the description thereof will be omitted. As shown in FIG. 13, the suction port body 1
A notched window 27b having an opening area larger than that of the slit 27a is formed in the substantially central portion in the left-right direction of the seal portion 27 of the seal member 10 attached to the storage groove 18 of the suction window portion 17. Further, a projection 40 as a friction preventer having a width slightly narrower than the cutout width of the cutout window 27b is provided at a position corresponding to the cutout window 27b, and the projection 40 has a suction window portion 17 as shown in FIG. The storage groove 18 has a substantially L-shaped cross section that extends downward from the lower end of the rear groove wall 18a of the storage groove 18 and has the bending direction as the rear. The lower end of the projection 40, that is, the end 40a of the L-shaped bent portion is substantially halfway between the end of the rear groove wall 18a of the storage groove 18 and the line connecting the lower ends of the wheels 35 and 34. It is provided so that it may be located in the part. By setting the position of the tip end portion 40a of the protrusion 40 to the above position, it is possible to prevent the abrasion of the tip end portion of the protrusion 28 of the seal portion 27 that occurs even when cleaning a soft floor such as a carpet. The reason is that when the floor is soft like a carpet, the suction port body 1 moves in the front-rear direction while sinking into the floor during traveling, and the tip end of the protrusion 28 of the seal portion 27 moves to the floor surface. It is pressed by F with a strong force and the friction with the floor surface F increases, and as a result, the wear of the tip of the protrusion 28 is promoted.
When the suction port body 1 sinks into the floor when the tip of the suction port 1 is located at the position described above, the tip 40a of the projection 40 has the suction window 1
Abutting on the carpet surface that has entered 7 etc., that is, the floor surface F,
In order to prevent the sinking into the floor, that is, the inside of the carpet, the sinking amount is reduced and the friction between the tip end portion of the protrusion 28 and the floor surface F is reduced, and as a result, the wear is prevented.

By providing the protrusions 40 as described above, when cleaning the floor of a carpet or the like, even if the suction port body 1 sinks into the floor during traveling operation, the protrusions 40 prevent the sinking. As a result, it is possible to prevent wear of the tips of the protrusions 28. In addition, since the notch window 27b corresponding to the protrusion 40 is provided, the notch is combined with the fact that the suction port body 1 prevents the sinking and thus secures a gap with the floor surface F. Window 27
The dust can be effectively sucked from b.

In the above embodiment, the projection 40 is provided in the storage groove 18 of the suction window 17 below the rear groove wall 18a. However, the position of the projection 40 is not limited to this, and the vicinity of the suction window 17 is provided. Any position is acceptable as long as it is. Further, although the number of the protrusions 40 is one in the embodiment, a plurality of the protrusions 40 may be provided. Further, although the protrusion 21 is provided in the above-mentioned embodiment, this protrusion 21 is not always necessary from the viewpoint of preventing the abrasion of the protrusion 28.

When only the purpose of preventing the protrusion 28 of the seal portion 27 from being worn is, the suction window portion 17
The seal portion 27 that opens and closes may have a shape-retaining property, and the rotating structure that opens and closes may include a conventional shaft and a shaft hole.

[0031]

According to the invention of claim 1, which is configured as described above, since the opening and closing of the suction window of the seal member is performed by bending the bending portion having elasticity, the opening and closing can be performed without causing malfunction due to dust. Surely, and claim 2
The invention described above can prevent abnormal intrusion of the seal member into the suction opening, the invention described in claim 3 can prevent abrasion of the protrusion of the seal member, and the invention described in claim 4 is
The seal member is made of rubber having elasticity to prevent abrasion and prevent deformation due to contraction of the attached portion so that the attachment portion can be securely attached. Therefore, it is possible to prevent the elastic deformation of the attached portion of the seal member formed of the rubber having the above, and to reliably attach the seal member to the attaching portion.

[Brief description of drawings]

FIG. 1 is the present invention (the invention according to claim 1 and claim 2).
The front view of the suction port body of the vacuum cleaner of the Example.

FIG. 2 is a view of the suction port body of the electric vacuum cleaner of the above-described embodiment taken along line X of FIG.
Sectional drawing in -X.

FIG. 3 is a cross-sectional view of the essential part taken along line XX in FIG. 1 of the above embodiment.

FIG. 4 is a partial cross-sectional view showing a state in which the suction window portion of the above embodiment is opened.

FIG. 5 is a partial cross-sectional view showing a state where the suction window portion of the above embodiment is shielded.

FIG. 6 is a partial cross-sectional view showing a state in which the seal member of the above-described embodiment is in contact with the blocking protrusion.

FIG. 7 is a perspective view of the seal member of the above embodiment.

FIG. 8 is a perspective view showing the relationship between the configuration of the storage groove formed in the front wall and the seal member in the above embodiment.

9A and 9B are views showing the configuration of the holding member and the attachment to the core member of the above embodiment, FIG. 9A showing a state in which the holding member is attached to the core member, and FIG. 9B showing a procedure for attaching to the core member. It is a thing (YY sectional drawing of FIG. 8).

FIG. 10 is a perspective view of a seal member showing another embodiment of the attached portion of the seal member in the above embodiment.

FIG. 11 is a cross-sectional view of a seal member according to another embodiment (FIG. 1).
0 ZZ sectional view)

FIG. 12 is a perspective view of a sandwiching member of a seal member according to another embodiment.

FIG. 13 is a front view of the suction port body of the electric vacuum cleaner according to the embodiment of the present invention (the invention according to claim 3).

FIG. 14 is a view of the suction port body of the electric vacuum cleaner of the above embodiment.
3 is a partial sectional view taken along line kk of FIG.

FIG. 15 is a partial cross-sectional view showing a state in which the suction window portion of the above embodiment is opened.

FIG. 16 is a front view of a suction port body of a conventional vacuum cleaner.

FIG. 17 is a cross-sectional view of the suction port body of the conventional vacuum cleaner taken along line N-N of FIG.

FIG. 18 is a partial cross-sectional view showing a state in which the conventional suction window portion is opened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suction port body 2 Main body case (main body) 5 Connection pipe 10 Seal member 11 Front bank (front wall) 12 Rear bank 13 Suction opening 16 Suction air passage 17 Suction window 18 Storage groove (mounting part) 23 Core member ( Attached part) 24 Mounting base part 26 Bent part 27 Seal part 28 Projection part F Floor surface

Claims (5)

[Claims] 1. A main body section having a suction opening which is communicated with one side of a suction air passage formed inside and which has a surface to be cleaned opened, and a suction window section having a mounting portion on a front wall portion of the suction opening. A mounting portion, a plate-shaped seal portion provided on the mounting portion through a bent portion having elasticity, and a protrusion formed on the front side of the sealing portion, and the mounting portion serving as the mounting portion. An inlet body for an electric vacuum cleaner, comprising: a seal member attached to the main body portion to open and close the suction window portion by being attached; and a connecting pipe communicating with the other side of the suction air passage. 2. A suction opening communicating with one side of a suction air passage formed inside and having a surface to be cleaned opened, a suction window portion having a mounting portion on a front wall portion of the suction opening, and the suction window portion. A main body having a blocking body provided in the vicinity of the suction opening side, an attached portion, a plate-like seal portion provided on the attached portion, and a protrusion formed on the front side of the seal portion. A seal member that is rotatably attached to the main body portion by attaching the attached portion to the attachment portion to open and close the suction window portion; and a connection pipe that communicates with the other side of the suction air passage. Characteristic vacuum cleaner suction body. 3. A suction opening, which communicates with one side of a suction air passage formed inside and has an opening on the surface to be cleaned, a suction window portion having a mounting portion on the front wall portion of the suction opening, and the front wall portion. A main body having at least one wear preventing member provided so that its tip is located in the vicinity of the suction opening side at a substantially intermediate portion between the front bank portion and the suction window portion, a mounted portion, and this mounted portion. And a plate-shaped seal portion provided with a notch that allows the wear preventive body to pass therethrough, and by attaching the attached portion to the attachment portion, the suction portion is rotatably attached to the main body portion. An inlet body for an electric vacuum cleaner, comprising: a seal member that opens and closes a window portion; and a connecting pipe that communicates with the other side of the suction air passage. 4. The seal member is made of rubber, and its attached portion is integrally formed with a mount base and a core material having a melting point higher than the molding temperature of the seal member along the longitudinal direction of the mount. It is formed, It is characterized by the above-mentioned.
The suction port body of the vacuum cleaner according to claim 3. 5. The electricity according to claim 1, wherein the seal member is formed of rubber, and the attached portion thereof is formed of an attachment base portion and a holding member for holding the attachment base portion. Vacuum cleaner suction body.