JPH0128753Y2 - - 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, in the suction mouth body of a vacuum cleaner that has a rotating brush inside the suction mouth body and scrapes up and suctions dirt by the rotation of the rotating brush, lint and hair attached to the rotary brush body after cleaning are finished. Removal of such substances was generally performed from the suction port on the bottom of the suction port main body.

However, the suction port cannot be made larger than necessary in order not to reduce the suction force, and its size is generally much smaller than the rotating brush within the suction port body.

Therefore, even if an attempt was made to clean the rotating brush from the suction port, cleaning would be extremely difficult because the suction port was narrow.

In order to solve such problems,
It is conceivable to form the front wall of the suction port body, which is the front side of the rotating brush, as a lid that can be opened and closed, as in the carpet washer described in Japanese Patent No. 10527.

However, if the front wall is formed as a lid, the front wall is the part that is most likely to collide with furniture etc. during cleaning, so the collision may damage the lid, or the lid may be accidentally damaged. The disadvantage is that it opens up and becomes difficult to clean.

Therefore, in order to avoid such drawbacks, the
As described in Japanese Patent No. 17045, it is conceivable to open the upper surface of the suction port body and attach a cover body that can be opened and closed freely to the opening. By the way, in the suction port body described in this Japanese Utility Model Application Publication No. 56-17045, the opening part not only corresponds to the rotating brush, but also includes a bearing for pivotally supporting the rotating brush and a portion for transmitting power to the rotating brush. It also has an opening in the part that corresponds to the belt.

However, with this conventional structure, when the lid is opened, the part facing the bearing and belt is exposed, so dust can easily enter from this part.
Dust may adhere to the bearing and belt portion, resulting in a decrease in rotational performance.

(Problems to be solved by the invention) As mentioned above, even if the suction port body has an opening that is opened and closed by a lid on the top surface of the suction port body,
Conventionally, the opening extended to the portion facing the bearing and belt, which caused the problem that dust easily entered the bearing and belt portion.

Therefore, when opening the upper surface of the suction port body and attaching a lid to this opening, it is necessary to prevent the above-mentioned problems from occurring. Further, a locking means is required for attaching the lid, but it is also a problem to optimize this locking means according to the shape and function of the suction port.

The present invention was developed in view of the above points, and it is possible to prevent dust from entering the bearing and belt portion through the cleaning opening of the rotating brush, and it is possible to make the suction port body compact, and the lid body is not included. It is an object of the present invention to provide a suction port body for a vacuum cleaner that can be prevented from accidentally coming off.

[Structure of the idea]

(Means for Solving the Problems) In order to achieve the above purpose, the suction port body of the vacuum cleaner of the present invention has a fan chamber with a built-in fan that rotates by suction air, and a It has a built-in rotating brush that is formed by implanting brush bristles and is rotationally driven by the fan via a drive belt wound around one end of the rotating shaft, and has an open upper surface and a suction port on the lower surface. a rotating brush chamber communicating with the fan chamber; a belt chamber provided on one side of the rotating brush chamber and incorporating a bearing for rotatably supporting one end of the rotating shaft of the rotating brush; and a belt chamber incorporating the drive belt; a bearing chamber provided on the other side of the rotating brush chamber and containing a built-in bearing for rotatably supporting the other end of the rotating shaft of the rotating brush; A lid is provided, and a locking portion for releasably locking an engaging portion provided at one end of the lid is formed on the closed upper side of the belt chamber, and
A clamp for removably locking an engaging portion provided at the other end of the lid body is provided on the closed upper side of the bearing chamber so as to be slidable along the axial direction of the rotating shaft of the rotating brush. It is something.

(Function) In the suction port body of the vacuum cleaner of the present invention, when the top opening of the rotating brush chamber is closed with the lid body, the engaging portion at one end of the lid body is locked to the locking portion on the upper side of the belt chamber. At the same time, the clamp on the upper side of the bearing chamber is slid in one direction, and the engaging portion at the other end of the lid body is locked to this clamp. During cleaning, a fan is rotated by the suction air, and a rotating brush driven by the fan to rotate through a belt scrapes up dust, and the scraped up dust is sucked through the suction port. At this time, the suction port body slides in a direction perpendicular to the axial direction of the rotating shaft of the rotating brush, but since the clamp slides in the axial direction of the rotating shaft, the impact is generated as a result of the sliding. Even if the clamp is applied, the clamp is prevented from coming off from the engaging portion. Also,
When cleaning the rotating brush, slide the clamp in the opposite direction to remove the clamp from the engaging part on the other end of the lid, and at the same time, remove the engaging part at one end of the lid from the locking part. Open the lid. Even if the upper opening of the rotating brush chamber is opened in this way, the upper sides of the bearing chamber and the belt chamber are closed, so that dust will not enter the bearing chamber and the belt chamber.

(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 1 formed in a substantially rectangular parallelepiped shape, a rotary tube 2 attached to the center of the rear wall of the suction port body 1 so as to be vertically movable;
The suction port body 1 includes a rotary brush 3 rotatably provided within the suction port body 1, and a fan 4 that rotationally drives the rotary brush 3.

The suction port main body 1 is composed of an upper case 11 and a lower case 12, and the inside thereof is divided into front and rear parts by a partition wall 13 erected along the longitudinal center line of the suction port main body 1. The front side is a rotating brush chamber 14. Further, on the rear side of the partition wall 13, partition plates 15 and 16 are arranged to form a central fan chamber 17 and a fan holding chamber 1 on one side of this fan chamber 17.
8 and the switching lever chamber 19 on the other side of the fan chamber 17
It is separated into. Further, a belt chamber 20 and a bearing chamber 21 are formed on one side and the other side of the rotating brush chamber 14 within both ends of the suction port body 1.

The rotating brush chamber 14 rotatably houses the rotating brush 3, and has an open upper surface and a longitudinal suction port 31 on the lower surface. By opening only the top surface, a rectangular opening 32 of a size corresponding to the rotating brush 3 is formed, and a rectangular lid 33 that can be opened and closed is attached to this opening 32. Further, the opening 32 is formed by cutting out the front side of the upper case 11, leaving left and right opening edges 34, 35 and a rear opening edge 36. And the left and right opening edges 34, 35
closes the upper sides of the bearing chamber 21 and the belt chamber 20, respectively.

The fan chamber 17 is cut out at a central portion of the rear wall of the suction port body 1, and the rotary tube 2 is attached to this portion so as to be vertically movable. A communication hole 41 in the center of the partition wall 13 communicates the rotating brush chamber 14 with the fan chamber 17.
is bored, so that the air sucked in from the suction port 31 can escape from the rotating brush chamber 14 through the fan chamber 17 and into the rotating tube 2.

The rotating brush 3 is formed by having brush bristles 52 spirally arranged around a rotating shaft 51 and protrusions 53 similarly spirally arranged around the rotating shaft 51. A gear 54 is provided at one end, and both ends of the rotating shaft 51 are inserted into the belt chamber 20 and the bearing chamber 21 to form the belt chamber 2.
0 and the bearing chamber 21, respectively, and are rotatably held by bearings 55 built into the bearing chambers 21 and 21, respectively. Further, the gear 54 is also housed within the belt chamber 20.

The fan 4 is mounted in the fan chamber 17 by being attached to the distal end of an interlocking shaft 61 whose distal end protrudes into the fan chamber 17 and whose base end is rotatably held within the fan holding chamber 18. built-in,
It is rotated by suction air passing through the fan chamber 17. The base end of the interlocking shaft 61 further protrudes into the belt chamber 20, and the gear 6 is attached to this base end.
2 is attached, and an endless drive belt 63 is wound around the gear 62 of the interlocking shaft 61 and the gear 54 of the rotating shaft 51 of the rotating brush 3, so that the rotation of the fan 4 is controlled by the interlocking shaft 61, the gear 62, and the drive belt. 63 and gear 54 to the rotating brush 3, and the rotating brush 3 is rotationally driven.

Further, along the partition wall 13, the communication port 4
A sliding plate 71 is slidably provided for adjusting the opening area of the opening area 1, and this sliding plate 71 is connected to and interlocks with a switching lever 72 that is slidably provided in the switching lever chamber 19. I'm starting to do that. The fan 4 reduces the opening area of the communication port 41 by the sliding plate 71, and rotates to drive the rotating brush 3 when the suction air passing through the fan chamber 17 becomes strong. It's getting old.

Further, a bumper 81 formed of an elastic material on the outer periphery of the lower case 12 which should be the outer periphery of the suction port main body 1
is installed.

Then, in the upper case 11, the opening 32
Engagement protrusions 83 having engagement claws 82 at their tips protrude from the lower surfaces of the opening edges 34 and 35 on both the left and right sides, and in the lower case 12, the engagement protrusions 83 of the respective engagement protrusions 83 Engagement holes 84 are formed at positions corresponding to the engagement holes 82, and the upper case 11 and the lower case 12 are integrated by the engagement between the engagement claws 82 of the engagement projections 83 and the engagement holes 84, and the upper case 11 and the lower case 12 are integrated. They are screwed together with screws 85 to form the suction port body 1.

The lid body 33, which is attached to the opening 32 on the upper surface of the rotating brush chamber 14 so as to be openable and closable, has a substantially rectangular shape, and a rear side wall 91 is attached to the rear edge of the lower surface along the longitudinal direction.
is provided, and the front side edge is bent downward, and left and right side walls 92 and 93 are provided at both left and right ends in the longitudinal direction. Engagement plates 94, which are flat engagement portions, are protruded from the outer surfaces of the left and right side walls 92, 93, and the left side wall 92
A longitudinal recess 95 is formed in the wall surface above the engagement plate 94 .

Corresponding to the rear wall 91 of the lid 33, a holding rib 101 for receiving the rear wall 91 of the lid 33 is provided along the rear opening edge 36 of the opening 32. An insertion hole 102 serving as a locking portion for removably locking the locking plate 94 of the right side wall 93 of the lid body 33 is bored in the right opening edge 35 covering the upper surface, and the upper surface of the bearing chamber 21 is A clamp 103 is provided on the left opening edge 34 that covers the opening 32 , and the clamp 103 is detachably engaged with the locking plate 94 on the left side wall 92 of the lid 33 .
It is removably attached to the

The holding rib 101 has a cross section of approximately L so as to wrap around the rear wall 91 of the lid body 33 from below to the inside and receive it.
It is formed into a letter shape. And this retaining rib 1
A leak hole 104 opened and closed by the rear wall 91 of the lid 33 received by the rear opening edge 36
This leak hole 104 is provided in the fan chamber 17.
It leads to the inside.

Further, the clamp 103 is slidably provided along the left-right direction of the suction port body 1, that is, along the axial direction of the rotating shaft 51 of the rotary brush 3, which is the longitudinal direction of the lid 33. The left opening edge 34 covering the upper surface of the bearing chamber 21 in which the clamp 103 is provided has a flat portion 111 corresponding to the clamp 103 on the upper surface, and the front and rear ends of this flat portion 111 are arranged in the left-right direction, that is, the lid 33 A pair of longitudinal guide holes 112 are formed facing each other along the axial direction of the rotating shaft 51 of the rotating brush 3, which is the longitudinal direction of the rotary brush 3. A positioning protrusion 113 is provided in a protruding manner at the center of the plane portion 111 . The clamp 103 corresponds to the pair of guide holes 112.
A pair of elastic protrusions 115 are protruded from the front and rear ends of the lower surface of the holder, and each has a pawl 114 at the tip having a width substantially the same as the center of the guide hole 112, and is slidably inserted into the guide hole 112. At the same time, a positioning recess 116 corresponding to the positioning protrusion 113 is formed at the center of the lower surface of the clamp 103.
Further, a locking groove 117 is formed on one side of the clamp 103 facing the left side wall 92 of the lid 33 to lock the engagement plate 94 of the left side wall 92 in a manner that allows the engagement plate 94 to be inserted and removed freely.

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

When closing the opening 32 with the lid 33, first insert the engagement plate 94 of the right side wall 93 of the lid 62 into the insertion hole 102 as a locking part of the right opening edge 35, and then insert the clamp 103 into the opening. 32 in the opposite direction, that is, to the left, to close the lid 33, and further slide the clamp 103 toward the lid 33, and insert the engagement plate 94 of the left side wall 92 of the lid 62 into the engagement groove 117. Then, the lid body 33 is locked in the closed state.

Then, by sliding the switching lever 72, the sliding plate 7
1, the opening area of the communication port 41 is narrowed, and when the vacuum cleaner connected to the suction port body is turned on, the fan 4 is rotated by the suction air, and the rotating brush 3 is rotated via the interlocking shaft 61 and the drive belt 63. Since it is rotationally driven, in this state, the suction port body is slid against the surface to be cleaned in the front-back direction, that is, in the direction orthogonal to the axial direction of the rotating shaft 51 of the rotating brush 3, thereby cleaning the surface. During this cleaning, even if the suction port body slides in the front-rear direction and collides with some obstacle, the clamp 103 is moved in the left-right direction perpendicular to the front-rear direction where this impact force is applied, that is, in the axial direction of the rotating shaft 51 of the rotating brush 3. Since the clamp 1 is slidable, this impact force causes the clamp 1 to slide freely.
03 will slide and release the locking of the lid body 33.

By the way, this clamp 103 is attached by aligning its elastic protrusion 115 with the center of a guide hole 112 formed in the flat part 111 of the left opening edge 34 and pushing it in. The protrusion 115 has a claw 114 at the tip.
Therefore, it will not come out of the guide hole 112 even if it is pulled as it is. Moreover, the guide hole 112 has a narrow width at both ends, and the lid body 33
Since the elastic protrusion 115 of the clamp 103 is located at one end of the guide hole 112 when the clamp 103 is engaged and disengaged, the engagement by the pawl 114 is reliable, and there is no fear that the clamp 103 will come off. Therefore, the lid body 33 will not be opened inadvertently during cleaning.

When cleaning the rotating brush 3 after cleaning is completed,
Open the lid 33 to release the opening 32 by reversing the procedure described above, and proceed from the opening 32. In this way, the rotating brush 3 can be easily cleaned from above. Note that when opening the lid 33, the recess 95 in the left side wall 92 of the lid 33 is removed from the gap formed between the clamp 103 that has slid away from the lid 33 and the left side wall 92 of the lid 33. Open the lid 33 by hooking your finger inside. Since the concave portion 95 is provided in this way, the lid body 33 can be easily opened without fingers slipping.

Moreover, when the lid body 33 is removed, the rear wall 9 of the lid body 33
The leak hole 104 that was blocked by the fan 1 is opened and the leak air enters the fan chamber 17 from there, so the speed of the suction air decreases, the fan 4 stops rotating, and the rotating brush 3 also stops rotating. Therefore, even when cleaning the rotary brush 3 to remove lint and the like, the rotary brush 3 can be cleaned without turning off the power to the vacuum cleaner.

Also, when removing dirt that has clogged the communication port 41, it can be removed from the opening 32 by opening the lid 33.

Further, when the lid body 33 is opened, only the rotating brush chamber 14 is opened, and the bearing chamber 21 and the belt chamber 20 are not opened, which is safe and prevents dust from entering the bearing chamber 21 and the belt chamber 20. There isn't. Therefore, there is no possibility that dust will adhere to the bearing 55, the belt 63, or the gear 54, thereby reducing the rotatability.

By the way, since the belt chamber 20 has a built-in gear 54 attached to one end of the rotating shaft 51 of the rotating brush 3, the belt chamber 20 is a bearing having only a built-in bearing 55 that rotatably holds the other end of the rotating shaft 51. The height is higher than that of the chamber 21. However, according to the above configuration, the clamp 103 is provided above the bearing chamber 21,
The insertion hole 102, which is a fixed locking part, is inserted into the belt chamber 2.
Since it is provided above the suction port 1, the height of the suction port main body 1 can be lowered and it can be made smaller. Furthermore, it is possible to prevent the clamp 103 from getting caught on the belt 63.
Further, since the clamp 103 and the insertion hole 102 are provided using the space above the bearing chamber 21 and the belt chamber 20 on both sides of the rotating brush chamber 14, the structure becomes simple.

[Effect of idea]

According to the present invention, a lid is provided at the top opening of the rotating brush chamber, which has the belt chamber and the bearing chamber on both sides,
A locking part that removably locks the engaging part at one end of the lid body is formed on the closed upper side of the belt chamber, and a clamp that removably locks the engaging part at the other end of the lid body. is installed on the closed upper side of the bearing chamber, so when the lid is opened, only the rotating brush chamber is opened, but the belt chamber and bearing chamber are not. This prevents dust from entering the belt chamber and bearing chamber. This prevents deterioration in rotational performance due to dust adhering to the belt and bearings, and also reduces the height of the suction port and prevents the clamp from getting caught on the belt. Furthermore, since the clamp is made to be able to slide freely along the axial direction of the rotating shaft of the rotating brush, even if an impact is applied due to the sliding of the suction port in a direction perpendicular to this axial direction during cleaning, the clamp will not engage. This prevents the lid from coming off accidentally.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing one embodiment of the suction port body of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a sectional view taken along line A-A in Fig. 2, and Fig. 4 is a BB sectional view, FIG. 5 is a CC sectional view in FIG. 2, FIG. 6 is an exploded perspective view of the clamp mounting part,
FIG. 7 is an enlarged perspective view of the guide hole, and FIGS. 8 and 9 are longitudinal sectional views showing the state of the elastic protrusion inserted into the guide hole. 3... Rotating brush, 4... Fan, 14... Rotating brush chamber, 17... Fan chamber, 20... Belt chamber, 21... Bearing chamber, 31... Suction port, 33...
Lid body, 51... Rotating shaft, 52... Brush bristles, 55
... Bearing, 63 ... Drive belt, 94 ... Engagement plate as an engagement part, 95 ... Recess, 102 ... Insertion hole as a locking part, 103 ... Clamp, 112 ...
... Guide hole, 114 ... Pawl, 115 ... Elastic protrusion.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A fan chamber containing a built-in fan that rotates by suction air, and a fan chamber formed by planting brush bristles on the outer periphery of a rotating shaft and wrapped around one end of the rotating shaft. A rotating brush chamber has a built-in rotating brush rotatably driven by the fan via a drive belt, has an open upper surface, a suction port on the lower surface, and communicates with the fan chamber, and a rotating brush chamber on one side of the rotating brush chamber. a belt chamber provided with a bearing for rotatably supporting one end of the rotating shaft of the rotating brush, and a belt chamber containing the drive belt; A bearing chamber containing a bearing that rotatably supports the end of the rotary brush chamber is provided, and a lid body that can be opened and closed is provided at the top opening of the rotating brush chamber, and an engaging portion provided at one end of the lid body is engaged. A locking portion for releasably locking is formed on the closed upper side of the belt chamber, and a clamp for releasably locking an engaging portion provided at the other end of the lid body is formed in the bearing chamber. A suction port body for a vacuum cleaner, characterized in that the suction port body for a vacuum cleaner is provided on a closed upper side so as to be slidable along the axial direction of the rotating shaft of the rotary brush. (2) A pair of longitudinal guide holes are drilled along the axial direction of the rotating shaft in the upper surface of the bearing chamber in which the clamp is installed, and are widened at the center and narrowed at both ends. Utility model registration claim 1, characterized in that the device has a pawl at its tip having approximately the same width as the central portion of the guide hole, and a pair of elastic protrusions on the lower surface that are slidably inserted into the guide hole. The suction port body of the vacuum cleaner described in . (3) The vacuum cleaner according to claim 1 or 2, wherein the lid has a recessed portion on the end face of the engaging portion that is locked by the clamp. Mouth body.