JPH0534974B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a suction port body for a vacuum cleaner having a rotating cleaning body such as a rotating brush, and is used to remove dust attached to the rotating cleaning body of the suction port body. The present invention relates to a safety mechanism that prevents fingers or the like from touching a rotating rotating cleaning body when a lid for opening an opening to be removed is opened.

(Prior art) Conventionally, a rotary brush is rotatably provided in a rotary brush chamber in a suction port body, and this rotary brush is driven by a turbine or an electric motor that is rotated by the suction airflow to scrape out dust from a carpet, etc. In addition, a suction port body for a vacuum cleaner is known that has a structure in which dust is sucked in from a dust suction port formed on the lower surface of the rotating brush chamber.

And, in the suction mouth body of this kind of vacuum cleaner,
If lint or hair gets wrapped around the rotating brush, its rotational force will decrease, so if you try to remove the lint or the like by inserting your finger into the dust suction port, the area of the dust suction port is not very large and the suction port itself Since it is located on the underside of the rotating brush, it takes time and effort to clean the rotating brush thoroughly and hygienically.

Therefore, a structure is adopted in which an opening with a relatively large opening area is opened and closed by a lid on the top surface of the rotating brush chamber, and the rotating brush can be easily and hygienically cleaned from this opening. . However, if the lid is opened while the rotating brush is rotating, there is a risk that fingers or the like may come into contact with the rotating rotating brush, and there is a risk of injury. Also,
Even in a suction port having a structure in which an opening that is opened and closed by a lid is not provided, it is extremely dangerous to insert a finger into the dust suction port while the rotating brush is rotating.

Therefore, as shown in Japanese Patent Application Laid-Open No. 53-34365, for example, the rear part of the dust suction port is formed of a soft material, so that when a finger is inserted into the dust suction port, the rotating brush and the end of the dust suction port A structure has been proposed that prevents fingers from being strongly pinched by the edges. However, with this structure, the rotational force of the rotating brush itself remains the same as the rotational force during cleaning, and there is a high risk of damaging fingers.

Therefore, when the lid is opened while the rotating brush is rotating, especially in a suction port body that has an opening that can be opened and closed by the lid, there are various methods that automatically weaken or stop the rotational force of the rotating brush. Safety mechanisms have been implemented or proposed.

For example, in a suction port whose driving source is a turbine, a leak hole is formed on the surface of the suction port that faces the turbine chamber and is brought into contact with and separated from the lid, and when the lid is opened, the intake airflow is leaked from the leak hole. This structure reduces the speed of the airflow hitting the turbine and weakens the rotational force. However, with this structure, it is difficult to close the leak hole with sufficient airtightness when the lid is closed, which tends to cause a decrease in suction efficiency. Also, if you try to completely close the leak hole by pressing the lid, the lid must be held airtight to the suction port body.
Frictional resistance increases, making it difficult to attach and detach the lid. Further, this structure cannot be applied to a suction port body using an electric motor as a driving source.

On the other hand, in a suction port body using an electric motor as a driving source, it is conceivable to provide a switch that is turned off in conjunction with the opening operation of the lid body, so that the electric motor is stopped at the same time as the lid body is opened. However, in this structure, a switch is added to constitute a safety mechanism, which makes the structure complicated and increases the cost. Can not.

In addition, for example, the rotation transmission belt stretched between the pulley fixed to the rotating shaft of the electric motor and the pulley fixed to the rotating brush may be made somewhat longer.
A separate roller is provided that is pressed against this belt to provide tension, and by moving the roller away from the belt in conjunction with the opening operation of the lid, the tension on the belt is loosened, causing a slip between the belt and the pulley. , a structure that weakens the transmission force is also considered. However, even with this structure, it is necessary to add members such as rollers, so there is a problem in that the cost is high. In addition, since the roller is pressed against the belt, this belt is prone to wear, and vibrations caused by the rotation of the rotating brush are transmitted to the lid through the roller, so there is a risk that the lid may open when it receives an impact. There is also.

(Problems to be Solved by the Invention) As described above, in the suction port body of the conventional vacuum cleaner, for example, the structure does not include a safety mechanism that stops the rotating brush in conjunction with opening the opening. , there is a risk that fingers, etc. may come into contact with the rotating rotating brush, and if the safety mechanism is configured with a leak hole or switch, the suction port body whose drive source is a turbine or an electric motor may be damaged. A safety mechanism can only be applied to one of them, and if the safety mechanism is configured with a switch or roller, there is a problem in that the number of parts increases and the cost becomes high.

The present invention aims to solve these problems, and is able to reliably eliminate the risk of fingers touching the rotating cleaning body regardless of the type of drive source, and has a simple structure. To provide a simple and inexpensive suction port body for a vacuum cleaner.

(Means for Solving the Problems) The suction port body of the vacuum cleaner of the present invention has a rotating cleaning body chamber therein, a dust suction port opening at the bottom facing the rotating cleaning body chamber, and an opening opening upward. a suction port body provided with a section, a rotary drive body provided within the suction port main body, a groove-shaped bearing section provided within the suction port main body with openings on surfaces facing each other; a rotary cleaning body rotatably supported by a held bearing and disposed in the rotary cleaning body chamber; a rotation transmission belt stretched between the rotary shaft of the rotary drive and the rotary cleaning body; , a lid detachably provided on the suction port body for opening and closing the opening, and a first lid body provided with the bearing portion on the suction port body;
A regulating part and a second regulating part facing the first regulating part are formed in a groove shape, and at least an upper part of the second regulating part that regulates movement of the bearing toward the rotational drive body is formed in the groove shape. It is provided on the lid body, and the rotation center of the rotary cleaning body is located below the rotation center of the rotation shaft of the rotary drive body.

(Function) The suction port body of the vacuum cleaner of the present invention has a first regulating portion and a second regulating portion that hold the bearing of the rotating cleaning body when the lid body that opens and closes the opening for cleaning the rotating cleaning body is closed. The rotating cleaning body is prevented from moving toward the rotating drive body by the bearing formed by the rotating body, and is rotated by the rotating drive body via a belt stretched between the rotating cleaning body and the rotating shaft of the rotating drive body. The cleaning body is rotated. Also,
If the lid body accidentally opens the opening while the rotary cleaning body is rotating, the second regulating part at the upper part of the bearing part provided on the lid body will separate from the bearing, and the rotary drive body side of the bearing will open. Furthermore, since the center of rotation of the rotary cleaning body is located below the center of rotation of the rotating shaft of the rotary drive body, the tension of the belt causes the rotary cleaning body to move toward the rotary drive body, causing the belt to loosen and rotate. The transmission is weakened and the rotation of the rotating cleaning body is reduced or stopped.

(Embodiment) Next, the structure of an embodiment of the suction port body of a vacuum cleaner of the present invention will be described with reference to FIGS. 1 to 7.

Reference numeral 1 designates a suction port body, which is composed of a lower case 2 with an open top surface, and an upper case 4 connected to the rear portion of the upper surface of the lower case 2 with screws 3 and with an open bottom surface. Inside the suction port main body 1, a rotating brush chamber as a rotating cleaning body chamber is provided by partition walls 5, 6, 7, and 8 which are formed integrally with the cases 2 and 4 and are joined to each other. 9, a board storage chamber 10, a ventilation chamber 11, a motor storage chamber 12, and a belt chamber 13. That is, a rotary brush chamber 9 is formed on the front side by a front and rear partition wall 5 extending in the left-right direction and having a communication port 14 formed in the center, and a pair of left and right partition walls 6 extending rearward from both side edges of the communication port 14. A substrate storage chamber 10 , a ventilation chamber 11 facing the communication port 14 , and a motor storage chamber 12 are formed laterally in the rear side, and a partition wall 7 formed on both sides of the rotating brush chamber 9 and A belt chamber 13 is formed on the side of the rotating brush chamber 9 and the motor housing chamber 12 by a partition wall 8 formed on one side of the electric motor housing chamber 12 .

A dust suction port 15 is formed in the lower surface of the suction port main body 1 facing the rotating brush chamber 9, and an opening 16 is formed over the entire upper surface on the front side of the front and rear partition wall 5. Furthermore, an insertion hole 17 is formed in the rear surface of the suction port body 1 facing the ventilation chamber 11.

Further, facing the electric motor storage chamber 12, an intake hole 18 is formed on the rear surface of the suction port main body 1, and an exhaust hole 19 is formed on the front and rear partition wall 5. are covered by filters 18a and 19a, respectively. Furthermore, an air hole 20 is also formed on the side surface of the suction port body 1 facing the belt chamber 13,
This intake hole 20 is covered with a filter 20a.

Furthermore, a plurality of engagement holes 21 are formed on the front surface of the suction port main body 1, that is, on the front surface of the lower case 2. Further, on the upper front surface of the front and rear partition walls 5, that is, on the front surface of the upper case 4, an engagement stepped portion 22 having a substantially L-shaped side surface is formed, and engagement protrusions (not shown) are formed at both ends. each formed.

26 A lid that opens and closes the opening 16 of the suction port body 1, and is formed in a thin box shape with an open bottom. A locking pawl portion 27 having an L-shaped cross section that is engaged with and disengaged from the engagement hole 21 of the suction port body 1 is integrally provided on the front edge of the lid body 26 . Furthermore, box-shaped support recesses 28 are formed on the rear side of both ends of the lid body 26, and a protection groove 29 extending in the left-right direction in FIG. 6 is formed on the lower surface of this support recess 28. . A knob 31 serving as a locking portion is provided in both support recesses 28 and engages the protection groove 29 with a retaining claw 32 that is integrally vertically disposed on the knob 31 and has a substantially L-shaped side surface. are supported so as to be slidable left and right. Also,
A locking groove (not shown) is formed on the rear surface of the knob 31 to be engaged with and disengaged from the engagement protrusion of the suction port body 1. Further, a regulating protrusion 33 is integrally and vertically provided on the lid body 26, located slightly in front of the supporting recess 28.

Reference numeral 41 denotes a connecting pipe provided at the rear of the suction port main body 1 so as to be rotatable by a predetermined angle. It consists of a bent cylindrical connecting tube 43 which is freely fitted and connected. and,
The front portion of the rotation tube 42 is formed into a semi-cylindrical portion 44 with an open front surface, and support shaft portions 45 are formed on both sides of the semi-cylindrical portion 44 to protrude outward. This semi-cylindrical portion 44 and the supporting shaft portions 45 on both sides thereof are rotatably fitted into bearing holes 46 formed at the joints of the partition walls 6 on both sides of the ventilation chamber 11. So, this ventilation room 11
The connecting tube 43 is supported rotatably in the front-rear direction (direction perpendicular to the plane of the paper in FIG. 6) inside the ventilation chamber 11, and the connecting tube 43 projects rearward through the insertion hole 17 of the ventilation chamber 11.

Furthermore, a connector 47 is fixed to the outer peripheral surface of the connecting tube 43, and one end of a cord 48 is connected to this connector 47. This cord 48 is led into the substrate storage chamber 10 from the rear surface of the suction port main body 1.
The other end of the cord 48 is connected to a circuit board 49 that is supported and fixed within the housing.

Further, in the motor storage chamber 12 of the suction port main body 1, an electric motor 51 as a rotation driving body is elastically supported by a pair of rubber supports 52 and 53, and a rotation shaft 54 of the electric motor 51 is It projects into the belt chamber 13. A gear-shaped pulley 55 is fixed to this rotating shaft 54. Further, the tip of the rotating shaft 54 is attached to a rubber holder 5.
It is rotatably supported by a graph oil metal bearing 57 covered by 6.

Furthermore, a support groove 61 is formed on the lower surface of the suction port main body 1, located slightly behind the front and rear partition wall 5, and extending in the left-right direction.
A seal lip or brush body 62 that is in close contact with the floor surface is fitted and fixed to the top. The circuit board 49 and the motor 51 are electrically connected via a lead wire 63 inserted between the support groove 61 and the brush body 62.

Reference numeral 66 denotes a rotating cleaning body, such as a rotating brush, which is formed into a substantially cylindrical shape, and has a plurality of brush bristles 67 planted on its outer peripheral surface. Further, a shaft body 68 is fixed to both end surfaces of the rotating brush 66, respectively. Furthermore, a gear-shaped pulley 69 is fixed to one end of the rotating brush 66 with respect to the shaft body 68 . And, in the double shaft body 68,
A bearing 72 is rotatably fitted through a washer 70 and a metal bearing 71 in a state where it is prevented from coming off. Both sides of this bearing 72 are formed into a substantially cylindrical shape, but a flange 73 whose outer circumference is approximately square is formed in the center, and each corner of this flange 73 is formed into an arcuate portion 74. has been done.

Further, a pair of front and rear parallel walls integrally formed with the suction port body 1 are located at the left end of the suction port body 1 in FIG. 5 on the side of the rotating brush chamber 9. A groove-shaped bearing portion 78 is formed by the regulating portions 76 and 77 formed by the grooves. on the other hand,
A pair of front and rear parallel walls are also located on the side of the rotating brush chamber 9 at the right end, that is, the end on the belt chamber 13 side, and are integrally formed with the suction port main body 1 or the lid 26. The first regulating portion 7 formed by
9 and the second regulating parts 80 and 81 form a groove-shaped bearing part 82. That is, the first regulating part 79 on the front side is formed integrally with the suction port body 1, while the second regulating parts 80, 81 on the rear side, that is, on the side of the electric motor 51, are divided into upper and lower parts, and the second regulating part 79 on the lower side is formed integrally with the suction port body 1. The regulating part 80 is attached to the upper second part of the suction port main body 1.
The regulating portion 81 is integrally formed with the lid body 26. The upper second regulating portion 81 formed on the lid body 26 is integrally and vertically provided on the lower surface of the support recess 28 of the knob body 31 . Then, the lower second regulating part 80 and the upper second regulating part 81 work together to position the bearing 72 and regulate the movement of the rotating brush 66 toward the electric motor 51.
When removed from the opening 16, the second
The positioning of the bearing 72 by the regulating part 81, that is, the regulation is released, and the rotating brush 66 is moved toward the electric motor 51 by the tension of the belt 87, which will be described later, as shown in FIG. is not communicated. Further, the front upper end portion of the second lower rear regulating portion 80 formed in the suction port body 1 is formed into an arcuate portion 8 .

Furthermore, the opening sides of the bearings 78 and 82 that face each other are widened with a stepped portion 84 interposed therebetween. Further, a regulating piece portion 85 is formed at the center of the lower part of these bearing portions 78 and 82. Note that the regulating portion 33 of the lid body 26 is located substantially vertically above the regulating piece portions 85. In addition, these both bearing parts 7
8 and 82 are slightly inclined upward and forward.

Both bearings 72 of the rotary brush 66 are supported by the two bearings 78 and 82 in a detachable manner and are prevented from rotating so as to be movable up and down. That is, the substantially square-shaped flange 73 of the bearing 72 is
Since the bearings 78, 82 are fitted into the bearings 78, 82 in a state where they are in contact with the stepped portions 84, the bearings 72 are prevented from rotating and their movement in directions other than the vertical direction is restricted. has been done. In this way, the rotating brush 66 is rotatably supported within the rotating brush chamber 9. Note that both ends of the rotating brush 66 are connected to oblong holding holes 86 formed in the partition walls 7 on both sides of the rotating brush chamber 9.
It is inserted into the shaft so that it can rotate freely and move up and down.

The pulley 69 of the rotating brush 66 located in the belt chamber 13 and the pulley 5 of the electric motor 51
5 and an endless timing belt 87 is stretched between them. In addition, as shown in FIG. 1, both pulleys 5
A straight line connecting the rotation centers of the bearings 5 and 69 is the bearing part 8.
2, and passes above the upper end of the second restricting portion 80 on the lower rear side formed in the suction port body 1 forming the suction port body 1 .
Further, the rotation center of the pulley 69 of the rotary brush 66, that is, the rotation center of the rotary brush 66, is located below the rotation center of the pulley 55 of the electric motor 51, that is, the rotation center of the rotation shaft 54 of the electric motor 51.

Next, the operation of this embodiment will be explained.

When cleaning, the suction port body is connected to the vacuum cleaner body via a hose, an extension pipe, or the like. At this time, the connection pipe 43 of the suction port body is fitted to the extension pipe, and the connector 47 provided on this connection pipe 43 is connected to the extension pipe.
is connected to a connector 91 provided on the extension tube, and the circuit inside the vacuum cleaner body and the circuit inside the suction port are electrically connected via a power supply line provided along the extension tube and the hose. That is, as shown in FIG. 7, one pole of the AC power supply 92 supplied through the vacuum cleaner body is connected to the
Diodes 93, 94, 9 that drive the electric motor 51
5, 96 and capacitors 97, 98, and the other pole of the AC power supply 92 is connected to the circuit board 49.
The rectifier circuit 100 is connected to the other input terminal of the rectifier circuit 100 through a fuse 101, a resistor 102, and a POSISTER 103 mounted on the rectifier circuit 100 in series.

During cleaning, the opening 16 of the suction port body 1 is closed by the lid 26, and in this state, as shown in FIG. 2 regulation surfaces 80a, 81a
The second regulating part 80 on the side of the suction port main body 1 and the second regulating part 81 on the side of the lid body 26 which form the same are in contact with each other. Further, a force is applied to the bearing 72 of the rotating brush 66 on the belt 87 side due to the tension of the belt 87, that is, in the direction of the electric motor 51.
The rearward movement of the belt 87 is particularly restricted by the second restriction surfaces 80a and 81a of the second restriction parts 80 and 81 of the bearing part 82, and the belt 87 is kept in a tensioned state.

Further, although the bearing 72 is slightly movable up and down in the bearing portions 78 and 82, the upward movement of the bearing 72 is particularly restricted by the restriction protrusion 33 of the lid 26.

The rotational force of the electric motor 51 is then
The vibration is transmitted to the rotating brush 66 via a belt 87 stretched between a pulley 55 fixed to the rotary brush 66 and a pulley 69 fixed to the rotating brush 66, and the rotating brush 66 scrapes dust from the carpet. increase. This scraped up dust is sucked in from the dust suction port 15 of the suction port main body 1 by driving the electric blower inside the vacuum cleaner main body, and is sucked into the rotating brush chamber 9, the communication port 14, the ventilation chamber 11, the communication pipe 41, It is led to the dust collection chamber inside the vacuum cleaner body via an extension pipe and hose.

Note that at this time, air flows into the motor storage chamber 12 from the intake hole 18 of the suction port body 1, and the air flows into the exhaust hole 19.
However, this air flow cools the electric motor 51 while it is being driven. In addition, the suction port body 1
Air flows into the belt chamber 13 through another intake hole 20 and flows out through the holding hole 86, but this air flow prevents dust from accumulating within the belt chamber 13.

When removing dust entangled with the rotating brush 66 during cleaning, the electric motor 51 is normally stopped and the lid body 26 is opened and the opening 16 is removed.
is opened, and the rotating brush 6 is inserted through this opening 16.
Clean 6. To open the lid 26, slide both knobs 31 as shown by the arrows in FIG.
Release the locking groove from the locking protrusion of the suction port body 1,
Next, as shown by the arrow in FIG.
The lid body 26 is rotated using the pivot point 7 as a fulcrum, and the locking claw portion 27 of the lid body 26 is further inserted into the engagement hole 21 of the suction port body 1.
Remove from. In addition, when closing the lid body 26, conversely, first the locking claw portion 27 is engaged with the engagement hole 21, and then the lid body 26 is rotated using the locking claw portion 27 as a fulcrum. By engaging the lower edge of the rear surface of 26 with the engagement step 22 of the suction port body 1, and then sliding both knobs 31 and engaging the engagement groove with the engagement protrusion, The lid body 26 is locked to the suction port body 1.

As described above, by forming the opening 16 in the suction port main body 1, when the rotating brush 66 becomes tangled with lint, hair, etc. and becomes difficult to rotate, it can be removed from the dust suction port 15. Since the wide opening 16 located on the upper surface can be cleaned by removing the rotary brush 66 from the opening 16 without putting your hands in it, extra effort is not required and it is sanitary.

Then, while the electric motor 51 is operating, the lid 26
When opened, the rotating brush 66 stops.
That is, when the lid 26 is opened, the second restriction part 81 at the upper part of the lid 26 that forms the bearing part 82 separates from the restriction part 80 at the lower part of the suction port body 1, and the restriction protrusion 33 of the lid 26 moves away. As shown in FIG. 2, the upper part of the bearing part 82 and the restriction surface 81a are removed from the bearing 72, so that the movement of the rotating brush 66 toward the electric motor 51 of the bearing 72 is no longer restricted.
The tension of the belt 87 is applied to the rotating brush 66 and the electric motor 51.
This acts in the direction of reducing the center-to-center distance L from the rotating shaft 54, so that
As L ₁ decreases to L ₂ (L ₁ >L ₂ ), the bearing 72 comes off from the bearing portion 82 as shown in FIG.
Then, the belt 87 loosens and the rotation transmission force weakens, so the rotating brush 66 stops.

Moreover, as described above, two surfaces, the upper surface of the bearing part 82 and the upper second regulating surface 81a, which is the surface on the electric motor 51 side that is continuous with this upper surface, are open, and
Since the rotation center of the rotating brush 66 is located below the rotation center of the rotation shaft 54 of the electric motor 51,
The bearing 72 reliably moves toward the electric motor 51, and the tension on the belt 87 is reduced.

Therefore, there is no need to touch the rotating rotating brush 66, so there is no risk of injury and it is safe.

Moreover, since members such as rollers and switches are not added to construct such a safety mechanism, the structure is simple and inexpensive. In particular, unlike the case where rollers are used, the belt 87 is less likely to wear out, and vibrations caused by the rotation of the rotating brush 66 are not transmitted to the lid 26.

Note that the second regulating portions 80 and 81 that form the regulating surfaces 80a and 81a of the bearing portion 82 may be provided in their entirety on the lid 26, but when the lid 26 is opened, the bearing 7
The upper restriction surface 8 of the bearing part 82 is sufficient to allow the bearing part 2 to come off.
1a is provided on the lid body 26, and the restriction portion 80 forming the lower second restriction surface 80a is provided on the suction port body 1. The load on the regulating part 81 can be reduced, and damage to the upper second regulating part 81 can be reliably prevented.

When the lid 26 is reattached, the disengaged bearing 72 is fitted into the bearing portion 82, and when the lid 26 is closed, the restriction surface 81a of the upper second restriction portion 81 forming the bearing portion 82 The upper second regulating part 81 forming the lower second regulating part 80a is provided on the lid body 26, and the lower second regulating part 80 forming the lower second regulating part 80a.
is provided on the suction port body 1, so the lid body 26
Even in the state where the bearing part 8 in the suction port body 1
The lower part of 2 has a roughly U-shaped groove on the side.
Therefore, since the bearing 72 can be held and stabilized in the bearing portion 82 before the lid 26 is attached, the lid 26 can be easily reattached without the bearing 72 being displaced.

Furthermore, when the lid body 26 is opened, the upper surfaces of the bearing parts 78, 82 are open.
The fact that the upper surface of the bearing parts 78, 8
2 to facilitate re-engagement of bearing portion 72 to 2.

Further, the corner portion of the flange portion 73 of the bearing 72 is the circular arc portion 7
4, and the upper end of the second regulating part 80 at the lower part of the bearing part 82 is also an arcuate part 83 that smoothly continues to the arcuate part 74, so even if the bearing 72 is slightly shifted, Even if it is not completely fitted into the bearing part 82, when the lid body 26 is attached, as the bearing 72 is pushed by the second restriction part 81 on the upper part of the lid body 26, both arcuate parts 74, According to the guidance of 83,
The bearing 72 is securely fitted into the bearing portion 82.

Furthermore, since the outer circumferential shape of the flange 73 of the bearing 72 fitted to the bearing 82 is approximately square, when the flange 73 is fitted to the bearing 82, each side of the flange 73 is There are four possible positions for the vertical and horizontal positional relationships. Therefore, when the lid body 26 is attached and the bearing portion 82 holds the bearing 72, there is no need to consider the directionality of the bearing 72 very much. The attachment of the lid 26 and the accompanying fitting of the bearing 72 to the bearing portion 82 can be done reliably and easily.

Furthermore, by locating the rotation center of the rotating brush 66 below the rotation center of the rotation shaft 54 of the electric motor 51, the belt 87 also faces forward and downward, so that when the lid body 26 is closed, the bearing 72 Even if the lid 26 is not completely accommodated in the bearing part 82, the wall 81 of the lid 26 is closed as the lid 26 closes downward.
pushes the bearing 72 downward and forward, so that the bearing 72 is easily and reliably accommodated in the bearing portion 82.

Furthermore, since the lid 26 closes while rotating around the locking claw portion 27 that is engaged with the locking hole 21 on the front side of the suction port body 1, at this time, the second The regulating part 81 controls the bearing 72 from the bearing part 82.
The bearing 72 is pressed from the rear side to the front side, so that the bearing 72 is more easily and reliably pressed against the bearing part 8.
It fits in 2.

In addition, in the above embodiment, the rotary driving body is the electric motor 5.
1, the rotary drive body may be a turbine rotated by the suction airflow. In this case, in order to stop the rotating brush 66 when the lid body 26 is opened, there is no need to provide a leak hole that is difficult to seal.

(Effects of the Invention) According to the present invention, the bearing part that holds the rotary cleaning body driven by the rotary drive body via the belt with the bearings in contact with each other is connected to the first regulating part provided on the suction port body. A lid that opens and closes an opening for cleaning the rotary cleaning body, which is formed in a groove shape with a second regulating part opposite to the first regulating part, and opens and closes the upper part of the second regulating part that regulates movement toward the rotary driving body. Since the center of rotation of the rotary cleaning body is located below the center of rotation of the rotation shaft of the rotary drive body, even if the cover is opened by mistake while the rotary cleaning body is rotating, the bearing will not be damaged. Since the rotating driving body side of the belt is opened, the rotating cleaning body is surely moved toward the rotating driving body side due to the tension of the belt, the tension is weakened, and the rotating cleaning body stops rotating. Moreover, the simple structure can reliably eliminate the risk of touching the rotating cleaning body with fingers or the like.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of Fig. 5 showing an embodiment of the suction port body of the vacuum cleaner of the present invention, and Fig. 2 is a cross-sectional view at the same position as Fig. 1 showing a state in which the upper lid body is removed. Figure 3 is a sectional view at the same position as Figure 1 showing the state in which the above bearing has come off from the bearing part, and Figure 4 is a sectional view of the same position as in Figure 5.
Figure 5 is a cross-sectional view of the figure, and Figure 5 is a transverse plan view of the same as above.
FIG. 6 is a plan view of a portion of the same, and FIG. 7 is a circuit diagram of the same. DESCRIPTION OF SYMBOLS 1... Suction port main body, 9... Rotating brush chamber as a rotating cleaning body chamber, 15... Dust suction port, 16... Opening, 26... Lid body, 51... Electric motor as a rotating drive body, 54... ...Rotating shaft, 66... Rotating brush as a rotating cleaning body, 72... Bearing, 78, 82...
...Bearing part, 79...First regulating part, 80, 81...
...Second regulation section, 87...belt.

Claims (1)

[Scope of Claims] 1. A suction port body having a rotating cleaning body chamber therein and having a dust suction port opening at the bottom facing the rotating cleaning body chamber and an opening opening upward; a rotary driving body provided therein; a groove-shaped bearing part provided in the suction port body and having open surfaces facing each other; and the rotary cleaning body rotatably supported by the bearing held in the bearing part. a rotational cleaning body disposed in the chamber; a rotation transmission belt stretched between the rotational shaft of the rotational driving body and the rotational cleaning body; and the opening provided in a manner that can be freely engaged with and detached from the suction port main body. a lid body that opens and closes; the bearing part is formed in a groove shape by a first regulating part provided on the suction port body and a second regulating part facing the first regulating part; At least an upper portion of a second regulating portion that restricts movement of the bearing toward the rotary drive body is provided on the lid body, and the rotation center of the rotary cleaning body is positioned below the rotation center of the rotation shaft of the rotary drive body. A vacuum cleaner suction port body characterized by: