JPH0128754Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Objective of the Invention] (Field of Industrial Application) The present invention relates to a suction mouth body for a vacuum cleaner, and particularly relates to a suction mouth body having a rotating brush.

(Prior art) Conventionally, as shown in Fig. 1, a fan chamber 1 is provided inside.
and a rotating brush chamber 2 communicating with this fan chamber 1
a suction port main body 3 having a suction port on the lower surface which is the lower side of the rotating brush chamber 2; a connecting pipe 4 provided on one side of the suction port main body 3 facing the fan chamber 1; A fan 5 is rotatably provided in the rotary brush chamber 1 and rotated by the suction air that flows from the suction port through the rotary brush chamber 2 and the fan chamber 1 to the connecting pipe 4; In the suction port body of a vacuum cleaner having a structure including a rotary brush 6 which is provided and rotationally driven by the rotation of the fan 5, the speed of the suction air at both ends of the rotary brush chamber 2 is slowest, and the airflow is directed to these portions. Stagnation occurs, and dust accumulates and adheres to both ends of the rotating brush 6, often impeding its rotation.

Therefore, conventionally, as described in Japanese Patent Publication No. 46-18675, bypass ports 7 are provided at the lower side of both end surfaces of the suction port main body 3, and from this bypass port 7 into both ends of the rotating brush chamber 2. By forming a bypass air passage that directly passes through, the bypass air flowing from the bypass air passage prevents the above-mentioned debris from accumulating.

However, if the bypass port 7 is provided at the bottom of both end faces of the suction port main body 3, this part is close to the surface to be cleaned, so there is a risk that dirt on the surface to be cleaned may be sucked in through the bypass port. Since it is formed so as to pass through the bearing part 8 which holds both ends of the rotating brush 6 formed in both ends of the mouth body 3 and the part of the drive belt 9 which drives the rotating brush 6, there is no contact with these parts. Above bypass port 7
There was a risk that the dust that had gotten in from the rotary brush 6 would become attached and obstruct the rotation of the rotating brush 6.

(Problem to be solved by the invention) As mentioned above, in the suction port body of a conventional vacuum cleaner, the bypass air passage is connected to the bearing part of the rotating brush or the part of the drive belt that drives the rotating brush within the suction port body. Since the brush was formed to pass through the rotary brush, there was a problem in that dirt could adhere to these parts and impede the rotation of the rotating brush.

The present invention was developed in view of the above points, and an object of the present invention is to provide a suction port body for a vacuum cleaner that prevents dirt from accumulating in both ends of the rotating brush chamber and allows the rotating brush to rotate smoothly. It is.

[Structure of the idea]

(Means for Solving the Problems) In order to achieve the above object, the present invention has a fan chamber and a rotating brush chamber communicating with the fan chamber partitioned inside, and belt chambers on both sides of the rotating brush chamber. and a suction port body that defines the bearing chambers in a shielding manner and has a suction port on the lower surface of the rotary brush chamber, and a connecting pipe provided on one side of the suction port body facing the fan chamber; A fan rotatably provided in the fan chamber and rotated by the suction air flowing from the suction port through the rotating brush chamber and the fan chamber to the connecting pipe; and a fan rotatably provided in the rotating brush chamber that rotates. a rotating brush rotationally driven by a rotary brush, a bearing provided in the belt chamber and a bearing chamber to rotatably support the rotating brush, and a belt provided in the belt chamber to transmit rotation from the fan to the rotating brush. In the suction port body of the vacuum cleaner equipped with the above, bypass ports are provided at the upper side near both sides of the suction port body, and bypass ports are provided at both ends of the rotating brush chamber at positions away from the belt chamber and the bearing chamber. Open the air passage,
Bypass air passages are formed in the suction port body, each passing from each of the bypass ports to both ends of the rotating brush chamber via each air passage opening.

(Function) With the suction port body of the vacuum cleaner of the present invention, during cleaning,
The fan rotates due to the suction air flowing from the suction port through the rotating brush chamber and fan chamber to the connecting pipe.
The rotation of this fan is transmitted to the rotating brush by the belt, and this rotating brush is driven to rotate and scrapes up the dirt. At this time, the bypass air passing through the bypass air passages that exit into both ends of the rotating brush chamber from the bypass ports on the upper side near both sides of the suction port body through the air passage openings opened at both ends of the rotating brush chamber. Dirt and dust are carried away and dirt and dust are prevented from accumulating within the ends of the rotating brush chamber. At that time, the bypass port is located on the upper side of the suction port body, which prevents dirt on the surface to be cleaned from being sucked in with the bypass air to some extent, and the air duct ports are shielded on both sides of the rotating brush chamber. Since the bypass air does not pass through the belt chamber and the bearing chamber, which are separated from the belt chamber and the bearing chamber, it prevents dirt, etc., sucked in with the bypass air from entering the belt chamber and the bearing chamber. be done.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

The suction port body of this embodiment includes a suction port body 11 formed in a substantially rectangular parallelepiped shape, and a connecting pipe 1 attached to the center of the rear wall of this suction port body 11 so as to be vertically movable.
2, a rotary brush 13 rotatably provided within the suction port body 11, and a fan 14 for rotationally driving the rotary brush 13.

The suction port main body 11 is composed of an upper case 21 on the upper side of the suction port main body 11 and a lower case 22 on the lower side of the suction port main body 11, and inside thereof there is a partition wall 23 erected along the longitudinal center line of the suction port main body 1. It is divided into front and rear parts by
4. The rear side of the partition wall 23 is further divided by partition plates 25 and 26 into a central fan chamber 27, a fan holding chamber 28 on one side of this fan chamber 27, and a switching lever chamber 29 on the other side of the fan chamber 27. There is. Further, a belt chamber 32 and a bearing chamber 33 are partitioned in a shielding manner on one side and the other side of the rotating brush chamber 24, which are located in both ends of the suction port body 11, with a right side wall 30 and a left side wall 31 of the rotating brush chamber 24 separated. It is formed.

The rotating brush chamber 24 rotatably houses the rotating brush 13, and has an open upper surface and a long suction port 41 on the lower surface. By opening the top surface, a rectangular opening 42 of a size corresponding to the rotating brush 13 is formed, and a rectangular lid 43 that can be opened and closed is attached to this opening 42. Further, the opening 42 is formed by cutting out the front side of the upper case 21, leaving left and right opening edges 44, 45 and a rear opening edge 46. In addition, the right side wall 3 of the rotating brush chamber 24
Insertion holes 47 are formed in the 0 and left side walls 31, respectively, which extend into the belt chamber 32 and the bearing chamber 33.

The fan chamber 27 is cut out at a central portion of the rear wall of the suction port body 11, and the connecting pipe 12 is attached to this portion so as to be movable up and down. A communication port 51 is provided in the center of the partition wall 23 to communicate the rotating brush chamber 24 and the fan chamber 27.
is bored, so that the air sucked in from the suction port 41 can escape from the rotating brush chamber 24 through the fan chamber 27 and into the connecting pipe 12.

The rotating brush 13 has bristles 62 spirally arranged around a rotating shaft 61 and protrusions similarly arranged in a spiral shape, and is housed in the rotating brush chamber 24 . Both ends of the rotating shaft 61 are inserted into the belt chamber 32 and the bearing chamber 33 through insertion holes 47 formed in the right side wall 30 and left side wall 31 of the rotating brush chamber 24, respectively. Bearing 6 in 33
It is rotatably held at 4. Also, a gear 6 is attached to the right end of the rotating shaft 51 inserted into the belt chamber 22.
5 is installed. A certain gap is formed between the inner peripheral edge of each insertion hole 47 and the outer periphery of the rotating shaft 61 inserted into each insertion hole 47.

The fan 14 is installed in the fan chamber 27 by being attached to the distal end of an interlocking shaft 71 whose distal end protrudes into the fan chamber 27 and whose base end is rotatably held within the fan holding chamber 18. It is built in and rotates by the suction air passing through the fan chamber 27. The base end of the interlocking shaft 71 further protrudes into the belt chamber 32, and a gear 72 is attached to this base end.
An endless drive belt 73 is wound around the gear 65 of the rotating shaft 61 of the rotating brush 13, and the fan 14
The rotation of the interlocking shaft 71, gear 72, and drive belt 73
This is transmitted to the rotating brush 13 via the gear 65, and the rotating brush 13 is rotationally driven.

Further, along the partition wall 23, the communication port 5
A sliding plate 81 is slidably provided for adjusting the opening area of the opening area 1, and this sliding plate 81 is connected to and interlocks with a switching lever 82 that is slidably provided in the switching lever chamber 29. I'm starting to do that. The fan 14 reduces the opening area of the communication port 51 by the sliding plate 81, and the fan chamber 27
When the suction air passing through the brush becomes strong, it rotates and drives the rotating brush 13 to rotate.

In addition, a bumper 9 formed of an elastic material is provided on the outer periphery of the lower case 22 which should be the outer periphery of the suction port main body 11.
1 is installed.

Then, in the upper case 21, the opening 42
Engagement protrusions 93 having engagement claws 92 at their tips protrude from the lower surfaces of the opening edges 44 and 45 on both the left and right sides, and in the lower case 22, the engagement protrusions 93 of the respective engagement protrusions 93 Engagement holes 94 are formed at positions corresponding to the engagement holes 92, and the upper case 21 and the lower case 22 are integrated by the engagement between the engagement claws 92 of the engagement projections 93 and the engagement holes 94, and the upper case 21 and the lower case 22 are integrated. They are screwed together with screws 95 to form the suction port body 11. Further, a plurality of rollers 96 are provided on the lower surface of the lower case 22.

Further, bypass ports 101 are formed near both rear ends of the upper case 21 on the upper side of the suction port main body 11, respectively. Each bypass port 101 communicates with the fan holding chamber 28 and the switching lever chamber 29, and the fan holding chamber 28, the right end of the rotating brush chamber 24, and the switching lever chamber are connected to both ends of the partition wall 23. 29 and the left end portion of the rotating brush chamber 24, an air passage opening 102 is formed. These air passage ports 102 are connected to the belt chamber 32 and the bearing chamber 33.
The belt chamber 32 and the bearing chamber 33 are not in communication with each other. In this way, two bypass air channels 103 are created in the suction port body 11 through which bypass air passes from each bypass port 101 through the fan holding chamber 28 or the switching lever chamber 29 and from each air channel port 102 into both ends of the rotating brush chamber 24. It is formed. Of these two bypass air passages 103, the bypass air passage 103 that exits into the right end of the rotating brush chamber 24 is the first air passage that exits directly into the right end of the rotating brush chamber 24, as shown in FIGS. 3 and 4. The air passage 103a is branched into a second air passage 103b that passes through the right end of the rotating brush 24 and exits into the right end of the rotating brush chamber 24.

That is, the guide plate 104 provided along the right side wall 30 of the rotating brush chamber 24 allows the air passage opening 102 to pass between the right side wall 30 and the guide plate 104 and connect the rotating brush to the inner edge of the insertion hole 47 of the right side wall 30. A second air passage 103 that passes into the right end of the rotating brush 13 from between the outer periphery of the right end of the rotating shaft 61 of No. 13
b is formed, and the bypass air path 103 is branched into two.

The lid body 43 is attached to the opening 42 on the upper surface of the rotating brush chamber 24 so as to be openable and closable, and has a substantially rectangular shape.
1 is provided, and the front side edge is bent downward, and left and right side walls 112 and 113 are provided at both left and right ends in the longitudinal direction. Further, flat engagement plates 114 are provided protruding from the outer surfaces of the left and right side walls 112 and 113, respectively.

A holding rib 121 for receiving the rear wall 111 of the lid 43 is provided along the rear opening edge 46 of the opening 42 in correspondence with the rear wall 111 of the lid 43. The right side wall 1 of the lid body 43 is attached to the right opening edge 45 covering the upper surface.
An insertion hole 122 is formed as a locking portion for locking the twelve locking plates 114 in a removable manner. A clamp 123 that engages and disengages from the locking plate 114 is provided, and the lid body 43 is connected to the opening 4.
It is detachably attached to 2.

Next, the operation of the suction port body of this embodiment will be explained.

When the switching lever 82 is slid to narrow the opening area of the communication port 51 by the sliding plate 81 and the vacuum cleaner connected to the suction port body is turned on, the fan 14 is rotated by the suction air and the interlocking shaft 71 , drive belt 73
Since the rotating brush 13 is rotationally driven through the
In this state, the surface to be cleaned, such as the carpet, is cleaned.

During cleaning, bypass air flows from each bypass port 101 through each bypass air path 103 into both ends of the rotating brush chamber 24 from each air path port 102, so that it is sucked into the rotating brush chamber 24 from the suction port 41. The debris is carried by the bypass air from both ends of the rotating brush chamber 24 to the communication port 51 in the center of the rotating brush chamber 24, passes through the fan chamber 27, and is sucked into the vacuum cleaner body through the connecting pipe 12. be caught. Therefore, accumulation of dirt and the like in both ends of the rotating brush chamber 24 is prevented.

Further, since the bypass port 101 is located on the upper side of the suction port main body 11 and is away from the surface to be cleaned, dirt on the surface to be cleaned is prevented to some extent from being sucked in with the bypass air, and the bypass air path 101
There is no risk of dirt getting stuck inside.

Furthermore, the bypass air passage 1 including the air passage opening 102
03 is separate from the belt chamber 32 and bearing chamber 33, and bypass air does not pass through these belt chambers 32 and bearing chambers 33. Therefore, dirt and other substances sucked in with this bypass air cannot enter the belt chamber 32 and bearing chamber 33. is prevented. Therefore, dust accumulates in the belt chamber 32 and the bearing chamber 33, and the belt 73 and the bearing 64 are clogged with dust, causing the rotating shaft 61 to become clogged with dust.
The rotation of the rotating brush 13 is not likely to stop.
rotation is performed smoothly.

In particular, the bypass air passage 103 that exits into the right end of the rotating brush chamber 24 is branched into a first air passage 103a and a second air passage 103b, and the bypass air passing through the second air passage 103b rotates. Brush 13
The rotating shaft 6 passes into the rotating brush chamber 24 from between the outer circumference of the right end of the rotating shaft 61 and the inner circumferential edge of the insertion hole 47 formed in the right side wall 30 of the rotating brush chamber 24.
Dust does not adhere to the area around the rotary brush chamber 24, and intrusion of dust from the rotating brush chamber 24 into the belt chamber 32 is more reliably prevented.

Note that in this embodiment, the rotating brush chamber 24
Only the bypass air passage 103 that exits into the right end of the
However, a guide plate 104 similar to the above is provided along the left side wall 31 of the rotating brush chamber 24, and the left end of the rotating shaft 61 of the rotating brush 13 passes between the left side wall 31 and the guide plate 104. Bypass air flows into the left end of the rotating brush chamber 24 to form a second air passage 103b that flows into the left end of the rotating brush chamber 24 from between the outer periphery of the outer periphery and the inner periphery of the insertion hole 47 of the left side wall 31. The passage 103 may also be branched into two, similar to the bypass air passage 103 that exits into the right end portion of the rotating brush chamber 24. If you do this,
Dust is more reliably prevented from entering the bearing chamber 33, and dust is more reliably prevented from adhering to the bearing 64 in the bearing chamber 33 and inhibiting the rotation of the rotating brush.

[Effect of idea]

According to the present invention, a bypass air path is formed that exits from the bypass port to both ends of the rotating brush chamber through the air path port, so bypass air flows into both ends of the rotating brush chamber, and dirt and dust accumulate in this area. Never. Further, since the bypass port is provided on the upper side of the suction port main body, dirt and dust are not sucked in from the surface to be cleaned, and there is little risk of dirt and dust clogging the bypass air path. Furthermore, the air passage openings at both ends of the rotating brush chamber are located away from the belt chamber and bearing chamber, which are shielded on both sides of the rotating brush chamber. Therefore, dirt and dust do not adhere to the rotation transmission belt or the bearing of the rotating brush, and the rotating brush rotates smoothly.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the suction port body of a conventional vacuum cleaner, Fig. 2 is an exploded perspective view showing an embodiment of the suction port body of the vacuum cleaner of the present invention, and Fig. 3 is a perspective view of the upper case. , FIG. 4 is a perspective view showing the bypass air passage in the lower case. 11... Suction port body, 12... Connection pipe, 13...
...Rotating brush, 14...Fan, 24...Rotating brush chamber, 27...Fan chamber, 32...Belt chamber,
33... Bearing chamber, 41... Suction port, 64... Bearing, 73... Belt, 101... Bypass port, 1
02... Air duct opening, 103... Bypass air duct, 10
3a...first air path, 103b...second air path.

Claims (1)

[Claims for Utility Model Registration] (1) A fan chamber and a rotating brush chamber communicating with the fan chamber are partitioned inside, and a belt chamber and a bearing chamber are partitioned in a shielded manner on both sides of the rotating brush chamber. A suction port body having a suction port on the lower surface which is the lower side of the rotating brush chamber, a connecting pipe provided on one side of the suction port body facing the fan chamber, and a connecting pipe rotatably provided in the fan chamber to inlet the suction port. a fan that is rotated by suction air that passes through the rotary brush chamber and the fan chamber from the mouth to the connecting pipe; a rotary brush that is rotatably provided in the rotary brush chamber and is rotationally driven by the rotation of the fan; and the belt. a bearing provided in a chamber and a bearing chamber to rotatably support the rotating brush; and a belt provided in the belt chamber to transmit rotation from the fan to the rotating brush; A bypass port is provided in each of the upper portions, and air passage ports are opened at both ends of the rotating brush chamber at a position away from the belt chamber and the bearing chamber, and the air flows from the bypass ports through the air passage ports. A suction mouth body for a vacuum cleaner, characterized in that bypass air passages are formed in the suction mouth body, each of which exits into both ends of a rotating brush chamber. (2) The bypass air path is branched into a first air path that exits directly into the end of the rotating brush chamber and a second air path that exits into the rotating brush chamber through the end of the rotating brush. A suction port body for a vacuum cleaner according to claim 1 of the utility model registration claim, characterized in that: