JPH05253127A - Suction port body for vacuum cleaner - Google Patents

Abstract

PURPOSE:To provide an inexpensive suction port whose maintenance is facilitated by facilitating to attach and detach a rotary brush, and also, curtailing the number of parts, in the suction body for the cleaner having the rotary brush. CONSTITUTION:This suction port body is provided with a main body 1 which contains a driving device 3, and also, has a dust suction opening part opposed to the cleaning surface, and a rotary brush 2 which is supported axially so as to be freely rotatable along the opening part in this main body 1, can be inverted in its axial direction, and also, can be attached and detached, and moreover, provided with a part 4 to be transferred in one end part, and is freely attachable and detachable to and from this part 4 to be transferred, and a clutch 40 and a joint are provided in the part 4 to be transferred and the rotary brush 2, respectively, the clutch 40 and the joint are fitted to each other, and the rotary brush is rotated by transferring rotational force of the part 4 to be transferred to the rotary brush 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction inlet of a vacuum cleaner having a rotating brush.

[0002]

2. Description of the Related Art As shown in FIGS. 10 to 11, a conventional suction port body 51 has a drive device 5 such as an electric motor in a main body 52.
3, a rotary brush chamber 55 having a suction opening 54 facing the floor is formed.
A rotary brush 56 is disposed in the drive unit 53, and a drive unit 53 and a transmitted portion 57 such as a gear provided only at one end of the rotary brush 56 are linked by a belt 58 which is a transmission means.

Then, by the rotational force of the drive unit 53,
The rotary brush 56 is rotated to pick up dust such as a carpet from the floor surface and suck the dust.

Dust adheres to the brush bristles 56a of the rotary brush 56 during cleaning or for long-term use. Usually, a lid 58 is formed on the upper part of the main body so that the dust can be removed. Through the opening 59 that is closed by the rotary brush 56, the rotary brush 56
You can attach and detach from 5.

The rotary brush 56 has a rotary shaft 60 at both ends.
The rotary shaft 60 is axially supported by a bearing 62 supported by a bearing support 61.

When dust adheres to the brush bristles 56a of the rotary brush 56 due to long-term use, after removing the lid 58, the rotary brush 56 with the transmitted portion 57 and the bearings 62, 62 still attached is held. Then, the opposite side of the belt 58 is lifted to separate the transmitted portion 57 from the belt 58.

After cleaning the rotating brush 56, the rotating brush 56
In the mounting in the main body 52, first, the transmitted portion 57 side is passed through the belt 58, the bearing 62 is inserted into the bearing support portion 61, and then the bearing 62 on the opposite side is inserted into the other bearing support portion 61, After confirming that the belt 58 is securely engaged with the transmitted portion 57, the lid 58 is closed.

[0008]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the suction port body having the above-described structure, the rotating brush is attached and detached with the transmitted portion and the bearing fixed to the rotating brush. Therefore, when the belt is removed from the transmitted portion, The belt may also come off from the drive device, so it is very time-consuming to re-install, and sometimes the lid is closed without the belt being securely engaged, and the drive is In some cases, the rotational force of the device was not transmitted to the rotating brush. In this case, it was necessary to open the lid again and reengage the belt.

[0009]

As means for solving the above-mentioned problems, as a means for accommodating a drive unit, a main body having an opening facing a cleaning surface and a shaft rotatably in the main body along the opening are provided. A rotating brush that is supported, is reversible in its axial direction, is detachable, and has a transmitted portion at one end, and transmits the rotational force of the drive device to the transmitted portion provided in the main body. In the suction port body of the electric vacuum cleaner provided with the transmission means, the transmitted part and the rotating brush can be freely inserted and removed.

An Oldham coupling is provided between the transmitted portion and the rotating brush.

[0011]

The rotating brush can be attached and detached without removing the transmitted portion and without removing the belt.

Further, by using the Oldham coupling to connect the transmitted portion and the rotating brush, the rotational force of the transmitted portion can be reliably transmitted to the rotating brush even if the transmitted portion and the center of the rotating brush are slightly eccentric. ..

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIGS. 1 to 6 are views showing a first embodiment of the present invention. The suction port main body 1 has an upper case 5 and a lower case 6 which form an outer appearance, and a rear end portion thereof is vertically movable. A rotatable drive pipe 8 is provided, and a rotatable suction pipe 9 is connected to the tip of the drive pipe 8.

The lower case 6 acts as a sled for a carpet, and has a horizontally long dust collecting opening 10 formed in the front portion of the lower surface thereof, and a rubber sealing material 1 behind the opening 10.
1 is arranged in the lateral direction.

The lower case 6 has a front wheel 12 on the lower front surface.
Is equipped with a rear wheel 13 at the rear, and these wheels 12, 13
By and, a constant gap is formed between the lower surface of the lower case 6 and the floor surface.

Inside the suction port body 1, the upper case 5 and the lower case 6 are connected to each other to form a rotary brush chamber 14 and a communication path 15 for communicating the brush chamber 14 with the drive pipe 8 side. A dust suction passage extending from the portion 10 to the suction pipe 9 is formed.

Mechanism chambers 16 and 17 are formed on both inner sides of the suction port body 1, and an electric motor chamber 18 and an outlet (or control circuit board) storage chamber 19 are formed inside the suction chamber body 1 on both sides of the communication path 15. This room is 16 to 19
Are appropriately partitioned with respect to the dust suction passage.

Reference numeral 21 denotes a bumper, which is sandwiched between the upper and lower cases 5 and 6 and is located on the outer periphery of the suction port body 1, and has a function of sealing the coupling surfaces of the upper and lower cases 5 and 6 and a buffering effect against obstacles. It is an eggplant.

The rotary brush 2 has a structure in which an agitator 22 and brush bristles 23 are provided on the outer peripheral surface in a single or plural spiral shape.
4 protrudes into the mechanism chamber 17 and is rotatably supported by a bearing assembly 25 in the mechanism chamber 17.

The bearing assembly 25 comprises a bearing 26 and a bearing holder 27, and is held in the mechanism chamber 17 so as to be vertically movable. That is, a pair of ribs 29, 29 facing each other on the side of the lower case 6 forming the mechanism chamber 17 are integrally formed, and the bearing assembly 25 is positioned in the groove 30 between the ribs 29, 29, and the bearing The assembly 25 can move up and down along the groove 30.

On the opposite side of the rotary brush 2, a driven shaft coupling 41 which is fitted into and disengaged from a transmitted portion 14 described later is fixed.

In the transmitted portion 4, a main shaft joint 40 which is fitted into and disengaged from the driven shaft joint 41, a bearing 26, a gear 35, and a bearing 26 are sequentially press-fitted on the shaft 24a. The bearing 26 on the joint 40 side is held in the ribs 39, 39 integrally formed in the lower case 6 of the mechanism chamber 16, and the bearing assembly 25 at the other end is similarly rib 29 formed integrally in the lower case 6. ，
It is held in a groove 30 between 29.

The bearing assembly 25 held on both ends of the lower case 6 is biased inward by a leaf spring 42 interposed between the bearing assembly 25 and the side wall of the lower case 6. Also, the spring 5 forms a part of the upper case 5 with the lid 5a and the bearing assembly 25.
And the bearing assembly 25 is always urged downward.

The rotary brush 2 and the transmitted portion 14 are connected with the driven shaft joint 41 and the main shaft joint 40 in a fitted state, and a partition wall between the rotary brush chamber 14 and the mechanism chambers 16 and 17. An opening portion 32 is provided at the end of the rotary brush 2 such that the end portion of the rotary brush 2 is inserted and the vertical movement of the rotary brush 2 is allowed.

The electric motor 3 is a DC magnet electric motor,
It is installed in the electric motor room 18, and its rotating shaft 33 is installed in the mechanism room 1
6 and the gear 34 of the transmitted portion 14 and the gear 34 press-fitted and fixed to the rotary shaft 33 in the mechanism chamber 16.
And are connected by a belt 36, and the rotational force of the electric motor 3 is transmitted to the rotating brush 2.

A bearing assembly 37 is also provided at the tip of the rotary shaft 33 of the electric motor 3 and is held in a rib 43 formed integrally with the lower case 6.

The electric motor 3 is electrically connected to a main body of an electric vacuum cleaner (not shown) via a power supply cord (not shown).

Next, the lid 5a will be described. Knobs 44, which are slidable in the longitudinal direction, are provided at both ends of the upper surface of the lid 5a, and engagement knobs (not shown) are integrally provided on the knobs 44. By operating the knobs 44, the knobs (not shown) are shown. The engaging projection is engaged with an engaging portion (not shown) provided on the main body 1 to be attached and detached.

When using the suction port body constructed as described above, the suction port is connected to a hose, an extension pipe or the like communicating with the electric vacuum cleaner body (not shown), and the vacuum cleaner body is operated. At that time, first, the electric motor 3 is driven, and the electric motor 3
Is applied to the belt 36 and the gear 3 provided on the transmitted portion 4.
After rotating the driving shaft coupling 40 via 5 to rotate the rotary brush 2 engaged with the driving shaft coupling 40,
The agitator 22 and the brush bristles 23 scrape out dust on the floor surface to be cleaned, and collect the dust through the opening 10, the connecting path 15, and the suction pipe 9 in a cleaner body not shown.

In this way, after using for a certain period of time, the lid 5a is removed, the rotary brush 2 is removed, and the lint and the like entangled in the brush bristles 23 are removed. In this case, first, the rotary brush When 2 is pushed to the side opposite to the belt 36, the leaf spring 42 is compressed, and the rotary brush 2 slices by that amount, so that the driven shaft coupling 41 provided on the rotary brush 2 and the main drive provided on the transmitted portion 4 are compressed. The engagement with the shaft coupling 40 is disengaged, and the rotating brush 2 is lifted upward to be disengaged from the lower case 6.

When the rotary brush 2 is attached to the lower case 6, the bearing assembly 25 provided at one end of the rotary brush 2 is inserted between the ribs 29, 29 integrally formed on the lower case 6, and the rotary brush 2 is attached. Is pushed to the side of the leaf spring 42, and the driven shaft coupling 41 at the other end is aligned so that it can be engaged with the driving shaft coupling 40 still attached to the case 6.
1 and the driving shaft coupling 40 are engaged. When the rotating brush 2 is securely engaged, the lid 5a may be attached again.

(Second Embodiment) FIGS. 7 to 9 show a second embodiment of the present invention, but the present invention is different from the above-mentioned first embodiment in the following points. Only the differences will be described here, and the overall description will be omitted. Further, the same or corresponding parts as those in the first embodiment are designated by the same reference numerals. In the present invention, the Oldham coupling 28 is provided between the driven shaft joint 41 of the rotary brush 2 of the first embodiment and the main shaft joint 40 of the transmitted portion 4.

In a rotary body assembly consisting of two freely rotatable rotary bodies, when the rotational force of one rotary body is transmitted to the other rotary body, if the two rotary bodies are not aligned with each other, they will rotate in opposite directions. When it is made eccentric, it becomes unbalanced and vibrates
It causes noise.

Therefore, in order to obtain smooth rotation by absorbing the imbalance of the main rotor even if the axes of the two rotors are slightly eccentric, a joint provided between the main rotor and the slave rotor is provided. It is called Oldham's joint.

FIG. 7 is a suction port main body of the present invention provided with the Oldham coupling 28. FIG. 8 is a detailed cross-sectional view of an essential part near the transmitted portion 4, and FIG. 9 is an exploded perspective view showing the relationship between the three couplings. Is.

The Oldham coupling 28 is detachably fitted at both ends thereof to the driving shaft coupling 50 and the driven shaft coupling 51. The driven shaft coupling 51 is connected to the rotating brush 2 and the driving shaft coupling 50 is connected to the transmitted portion 4. It is fixed.

The Oldham coupling 28 has a concave portion a at one end and a convex portion b at the other end, and the convex portion is formed in a substantially T-shaped cross section.

On the other hand, the driven shaft joint 51 of the rotary brush 2 fitted to the Oldham joint 28 is provided with a convex portion a'which fits into the concave portion a of the Oldham joint 28, and the main driving shaft joint 50 is provided. A substantially T-shaped groove b ′ into which the substantially T-shaped convex portion of the Oldham coupling 28 is inserted and fitted is formed.

Incidentally. The concave portion a and the convex portion b of the Oldham coupling 28
And are located so that they intersect at a right angle. When the Oldham coupling 28 is fitted and connected to the main shaft coupling 50 of the transmitted portion 4, the convex portion b is inserted from the side of the groove b ′. Then, the Oldham coupling 28 does not come out in the axial direction of each other.

Then, the rotary brush 2 is attached to the Oldham coupling 28.
In order to fit in, the convex portion a ′ of the driven shaft coupling 51 may be inserted into the concave portion a of the Oldham coupling 28.

In this case, since the transmitted portion 4 is still attached to the lower case 6, the rotary brush 2 is attached to the transmitted portion 4.
That is, when connecting with the Oldham's joint 28, the bearing assembly 25 of the rotating brush 2 is brought into contact with the leaf spring 42 attached to the groove 30 of the ribs 29, 29 provided on the opposite side of the belt 36 of the lower case 6. Into the groove 30 and the leaf spring 42
When pushed to the side, the leaf spring 42 is compressed and the rotary brush 2 slides over the distance of the convex portion a ′.

In this state, the convex portion a'is aligned with the concave portion a of the Oldham's joint, and then the pressing force of the rotary brush 2 is released, so that the convex portion a'is depressed by the leaf spring 42 in the rotary brush 2. Enter and fit.

As described above, the main drive shaft joint 50, the Oldham's joint 28, and the driven shaft joint 51 are connected on substantially the same axis. When using the suction port body configured as described above, the suction port body is connected to the hose and the extension tube which communicate with the electric vacuum cleaner body (not shown) as in the first embodiment, and the vacuum cleaner is used. Drive the main unit.

At this time, first, the electric motor 3 is driven, and the rotational force of the electric motor 3 rotates the driving shaft coupling 50 via the belt 36 and the gear 35 provided on the transmitted portion 4, and the driving shaft coupling 50 is further rotated. After rotating the connected Oldham's joint 28 and the rotating brush 2 connected to the Oldham's joint 28, the agitator 22 and the brush bristles 23 scrape out dust on the floor surface to be cleaned, and the opening 10 and the connecting path 15 The dust is collected in the cleaner body (not shown) through the suction pipe 9.

In this way, after using for a certain period of time, the lid 5a is removed, the rotary brush 2 is removed, and the lint and the like entangled in the brush bristles 23 are removed. In this case, first, the rotary brush When 2 is pushed to the side opposite to the belt 36, the leaf spring 42 is compressed and the rotary brush 2 slides by that amount, so that the convex portion a ′ of the joint 41 provided on the rotary brush 2 causes the Oldham joint 28 to move.
It can be removed from the lower case 6 by coming out of the concave portion a and raising the rotary brush 2 as it is.

The Oldham's joint 28 remains engaged with the main shaft joint 50 of the transmitted portion 4, but when the Oldham's joint 28 is lifted upward, it may come off depending on the positional relationship between the main shaft joint 50 and the Oldham's joint 28. However, the Oldham coupling 28 does not come off by removing the rotating brush 2 by the method described above.

When the rotary brush 2 is attached to the lower case 6, the bearing assembly 25 provided at one end of the rotary brush 2 is inserted between the ribs 29, 29 integrally formed on the lower case 6, and the rotary brush 2 is attached. Of the Oldham coupling 2 with the other end coupling 41 still attached to the lower case 6.
The recesses 8 are aligned and engaged with each other. When the rotating brush 2 is securely engaged, the lid 5
It is sufficient to attach a as it was.

Even if the axes of the rotating brush 2 and the transmitted portion 4 are slightly deviated from each other as described above, since the Oldham coupling 28 is provided between them, the rotational force of the transmitted portion 4 is surely applied to the rotating brush 2. Be transmitted to.

In the first and second embodiments,
A lid 5a is provided for attaching and detaching the rotating brush 2
Although the attachment / detachment of “a” was carried out at the same time, the position of the engagement between the rotary brush 2 and the main shaft coupling 40 in the first embodiment and the position of the engagement between the rotary brush 2 and the Oldham's joint in the second embodiment were determined. And bearing assembly 2 of rotating brush 2
On the 5 side, if the size of the opening 32 provided in the walls of the upper case 5 and the lower case 6 forming the mechanism chamber 17 is set to be larger than the outer diameter of the bearing assembly 25, rotation will occur. Brush 2
Can be attached and detached through the dust suction opening 10, so that the lid 5a is unnecessary.

[0051]

Since the present invention has the above-mentioned structure, it has the following effects. The rotating brush and the transmitted part that transmits the rotating force of the electric motor can be inserted and removed freely, so the rotating brush can be attached to and detached from the lower case without removing the transmitted part from the belt. To do.

Further, since the Oldham coupling is provided between the rotating brush and the transmitted portion, even if the axis of the rotating brush and the transmitted portion is slightly deviated, the Oldham joint corrects the rotational force of the electric motor. Can be smoothly transmitted to the rotating brush.

Since the rotary brush can be attached to and detached from the dust suction opening by providing the rotary brush and the clutch or Oldham coupling at the engaging position in the rotary brush chamber, it is not necessary to provide a separate lid for the upper case. Therefore, the number of parts can be reduced, the number of assembling steps can be reduced, and an inexpensive suction inlet can be provided.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of a suction port body of the present invention.

FIG. 2 is a plan view (partial cross section) with the upper case removed in the first embodiment of the present invention.

FIG. 3 is an enlarged view of an essential part of FIG.

FIG. 4 is a sectional view taken along the line AA in FIG.

5 is an enlarged view of a main part of FIG. 2 similarly.

FIG. 6 is an external view of a main part showing a connected state of the rotary brush.

FIG. 7 is a plan view (partial cross section) of the suction port body with the upper case removed according to the second embodiment of the present invention.

8 is an enlarged view of an essential part of FIG. 7 similarly.

FIG. 9 is an external view of an essential part showing a connected state of the Oldham coupling.

FIG. 10 is an exploded perspective view of a conventional suction port body.

FIG. 11 is a plan view of the main body of FIG.

[Explanation of symbols]

 2 rotating brush 3 electric motor 5 upper case 5a lid 6 lower case 34 gear 35 gear 36 belt 40 driving shaft coupling 41 driven shaft coupling

Claims (2)

[Claims] 1. A main body which houses a drive unit and has an opening facing a cleaning surface, and a body which is rotatably supported in the main body along the opening and is reversible in the axial direction and detachable. And a rotary brush having a gear at one end, and a belt provided in the main body for transmitting the rotational force of the drive device to the gear, the suction port body of the electric vacuum cleaner, and the rotation with the gear. A suction port body for an electric vacuum cleaner, characterized in that a brush is freely inserted and removed, and a main shaft joint is provided on a gear and a follower shaft joint for a rotating brush is provided. 2. The suction port body of the vacuum cleaner according to claim 1, wherein an Oldham coupling is interposed between the main shaft joint and the driven shaft joint.