JP2960811B2 - Vacuum cleaner suction body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

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

[0003] Then, by the rotational force of the driving device 53,
By rotating the rotary brush 56, dust on the floor such as carpet is lifted up and sucked.

During cleaning or after a long period of use, dust adheres to the brush bristles 56a of the rotating brush 56. In order to remove the dust, usually a lid 58 formed on the upper part of the main body is used. The rotating brush 56 passes through the opening 59 closed by the rotating brush chamber 5.
5 can be attached and detached.

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

When dust adheres to the brush bristles 56a of the rotating brush 56 due to long-term use, the cover 58 is removed, and then the rotating brush 56 with the transmission portion 57 and the bearings 62, 62 inserted therein 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
First, the transmission portion 57 side is passed through the belt 58, the bearing 62 is inserted into the bearing support portion 61, and then the opposite bearing 62 is inserted into the other bearing support portion 61. It is performed by closing the lid 58 after confirming that the bolt 58 is securely engaged with the transmitted portion 57.

[0008]

In the suction opening having the above construction, the rotary brush is attached and detached while the transmission portion and the bearing are also fixed to the rotary brush. The belt may also come off the device, so re-attaching is very time consuming, sometimes the lid is closed with the belt not securely engaged, and the drive is In some cases, the rotational force of the rotating brush was not transmitted to the rotating brush. in this case,
It took time to open the lid again and re-engage the belt.

[0009]

As a means for solving the above-mentioned problems, as a means for accommodating a driving device and having an opening opposed to a cleaning surface, a shaft is rotatably provided in the main body along the opening. A rotating brush that is supported, is reversible in the axial direction, and is detachable, and has a gear at one end, and a belt that is provided in the main body and transmits the torque of the driving device to the gear. A first shaft provided on one end side of the rotating brush for rotating the gear; a first shaft for rotating the gear; A first bearing rotatably supporting the distal end side of the shaft, a first rib provided on the main body side for holding the first bearing, and a driving shaft coupling which rotates integrally with the gear And integrated with the rotating brush A driven shaft joint which rotates, second biasing the first bearing in a direction in which the provided at one end side of the rotary brush the driving shaft coupling and said driven shaft joint binds 1
And the first between the gear and the driving shaft coupling.
A second bearing rotatably supporting the shaft, and a second rib provided on the main body side between the gear and the driving shaft coupling, for regulating and holding the axial movement of the second bearing. A second shaft provided on the other end of the rotating brush for rotating the rotating brush, a third bearing rotatably supporting the distal end of the second shaft, A second spring provided on the other end side of the brush and for urging the third bearing in a direction in which the main driving shaft coupling and the driven shaft coupling are coupled to each other.

According to a second aspect of the present invention, an Oldham coupling is provided between the transmitted portion and the rotary brush.

[0011]

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

Further, by using an Oldham coupling for connection between 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 somewhat eccentric. .

[0013]

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

(First Embodiment) FIGS. 1 to 6 show a first embodiment of the present invention. The exterior of a suction port main body 1 is constituted by an upper case 5 and a lower case 6, and FIG.
A drive pipe 8 is provided at the rear end so as to be vertically rotatable.
A rotatable suction pipe 9 is connected to the end of the driving pipe 8.

The lower case 6 functions as a sleigh for a carpet. The lower case 6 has a horizontally long dust-absorbing opening 10 formed at the front lower surface thereof, and a rubber sealing material 1 is provided behind the opening 10.
1 are arranged in the horizontal direction.

The lower case 6 has a front wheel 12
A rear wheel 13 at the rear, and these wheels 12, 13
Thus, a certain gap is generated between the lower surface of the lower case 6 and the floor surface.

A rotary brush chamber 14 and a communication path 15 for connecting the brush chamber 14 to the drive pipe 8 are formed by coupling the upper case 5 and the lower case 6 inside the suction port main body 1, thereby forming a dust suction opening. A dust suction passage from the part 10 to the suction pipe 9 is formed.

On both sides inside the suction port main body 1, mechanism chambers 16 and 17 are formed, and on both sides of the communication path 15 inside this, a motor room 18 and an outlet (or control circuit board) storage room 19 are formed. Each room 16 to 19
Is appropriately divided 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 main body 1. It is what makes.

The rotating brush 2 is a structure in which agitator 22 and the brush bristles 23 on the outer peripheral surface 1 of Article or more strip helically, in the rotating brush chamber 14, and a second axis
Projecting one side of the axis 24 of the mechanism chamber 17, and is rotatably supported by a bearing assembly body 25 as a third bearing within the mechanism compartment 17.

[0021] The bearing assembly body 25 bearings 26 consists of a bearing holder 27, and is vertically movable holding in mechanism chamber 17. That is, to form a pair of re Bed 29 facing the lower case 6 side constituting the mechanism compartment 17 integrally, by positioning the bearing assembly body 25 in the groove 30 between the two ribs 29, 29, the The bearing assembly 25 can move up and down along the groove 30.

On the opposite side of the rotary brush 2, a driven shaft joint 41 that fits in and out of a transmitted portion 14 described later is fixed.

The transmission member 4 has a shaft 24 as a first shaft.
a, a main driving shaft coupling 40 which fits into and disengages from the driven shaft coupling 41, a bearing 38 as a second bearing , a gear 35, and a first bearing.
Bearing 26 as is press-fitted axially supported in order. And
The bearing 38 as the second bearing on the joint 40 side is the mechanism chamber 1
Li as 6 second rib integrally formed on the lower case 6 of
Held in the blanking 39, bearing Assembly 25 of the other end is held also in the groove 30 between the ribs 29, 29 as a first rib integrally formed on the lower case 6.

The bearing assembly 25 held at both ends of the lower case 6 has first and second bearings interposed between the lower case 6 and the side wall .
Preliminary Te to the leaf spring 42, 42 as the second spring is biased inwardly. A spring 31 is provided between the lid 5a forming a part of the upper case 5 and the bearing assembly 25, and the bearing assembly 25 is always urged downward.

The rotary brush 2 and the driven portion 14 are connected to each other by the driven shaft coupling 41 and the driven shaft coupling 40 being fitted to and separated from each other, and a partition wall between the rotary brush chamber 14 and the mechanism chambers 16 and 17. Is provided with an opening 32 through which the end of the rotating brush 2 is inserted and which allows the rotating brush 2 to move up and down.

The motor 3 is a DC magnet motor,
It is installed in the motor room 18 and its rotating shaft 33 is
6, and a gear 34 press-fitted and fixed to the gear 35 of the transmitted portion 14 and the rotating shaft 33 in the mechanism chamber 16.
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 end of the rotating 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 a vacuum cleaner (not shown) via a power supply cord (not shown).

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

[0030] When using the configured suction port body as described above, a hose communicating with the vacuum cleaner body (not shown) the suction port, connected to the extension tube or the like, to operate the vacuum cleaner body. At this time, the electric motor 3 is driven first, and the rotational force of the electric motor 3 is applied to the belt 36 and the gear 35 provided on the transmitted portion 4.
After rotating the driving shaft coupling 40 through the shaft and rotating the rotating brush 2 engaged with the driving shaft coupling 40, dust on the floor surface to be cleaned by the agitator 22 and the brush bristles 23 is scraped off. The dust is discharged, and dust is collected in a cleaner body (not shown) through the opening 10, the connection path 15, and the suction pipe 9.

After use for a certain period in this way, the lid 5a is removed, the rotary brush 2 is removed, and lint and the like entangled with the brush bristles 23 and the like are removed. Engaging 2 to the belt 36 opposite the compressed second leaf spring 42, by the amount corresponding rotary brush 2 is in slide, a driven shaft coupling 41 provided on the rotary brush 2 the transmitted portion 4 The rotating brush 2 can be detached from the lower case 6 by lifting the rotating brush 2 upward by disengaging the engagement with the driving shaft coupling 40 provided on the lower shaft 6.

[0032] When installing the rotary brush 2 to the lower case 6, insert the bearing assembly body 25 provided at one end of the rotary brush 2 between Li Bed 29, 29 formed integrally with the lower case 6, the rotating brush 2 is pushed into the leaf spring 42 side, and the driven shaft coupling 41 at the other end is aligned so as to be able to engage with the main driving shaft coupling 40 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. The present invention differs from the first embodiment in the following points. Here, only the differences will be described, and the entire description will be omitted. The same or corresponding parts as those in the first embodiment are denoted by the same reference numerals. According to the present invention, the Oldham coupling 28 is provided between the driven shaft coupling 41 of the rotary brush 2 of the first embodiment and the driven shaft coupling 40 of the transmitted portion 4.

In a rotating body assembly composed of two rotating bodies which can be detachably mounted, when the rotational force of one rotating body is transmitted to the other rotating body, the two rotating bodies must be aligned with each other if the rotating shafts are not aligned. If it is made to eccentric, it becomes unbalanced and vibrates,
May cause noise.

Therefore, even if the axes of the two rotating bodies are slightly eccentric, the unbalance of the main rotating body is absorbed and the smoothness is obtained.
To obtain a rotation in which the joint provided between the main rotating body and the slave rotating member referred to as Oldham coupling.

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

Both ends of the Oldham coupling 28 are detachably fitted to the driving shaft coupling 50 and the driven shaft coupling 51. The driven shaft coupling 51 is connected to the rotary 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 has a substantially T-shaped cross section.

On the other hand, the driven shaft coupling 51 of the rotary brush 2 fitted to the Oldham coupling 28 is provided with a convex portion a ′ that fits into the concave portion a of the Oldham coupling 28. 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 part a and the convex part b of the Oldham coupling 28
Are located so as to intersect at right angles. When the Oldham coupling 28 is fitted and connected to the driving shaft coupling 50 of the transmitted portion 4, the convex portion b is inserted from the side of the groove b '. Then, the Oldham couplings 28 do not come off in the axial direction of each other.

Then, the rotating brush 2 is connected to the Oldham coupling 28.
In order to fit into the joint, it is only necessary to insert the convex portion a ′ of the driven shaft coupling 51 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 rotating brush 2 is removed from the transmitted portion 4.
That is, when connecting the Oldham coupling 28, is mounted a bearing Assembly 25 of the rotary brush 2 into the groove 30 of the re-Bed 29, 29 provided on the opposite side of the belt 36 of the lower case 6
The leaf spring 4 is inserted into the groove 30 so as to contact the leaf spring 42.
When pushed to the second side , the leaf spring 42 is compressed, and the rotating brush 2 slides beyond the distance of the convex portion a '.

In this state, after the convex portion a 'is aligned with the concave portion a of the Oldham's joint, when the pressing force of the rotating brush 2 is loosened, the rotating brush 2 is pressed by the urging force of the second leaf spring 42 to project the convex portion a'. Are fitted into the recesses a.

As described above, the main driving shaft coupling 50, the Oldham coupling 28, and the driven shaft coupling 51 are connected on substantially the same axis. When using the suction port configured as described above, the suction port is connected to a hose and an extension pipe connected to a vacuum cleaner body (not shown) as described in the first embodiment. Drive the machine.

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 further the driving force is applied to the driving shaft coupling 50. 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 remove dust on the floor surface to be cleaned. The dust is collected by a cleaner body (not shown) via the suction pipe 9.

After using for a certain period in this way, the lid 5a is removed, the rotary brush 2 is removed, and lint and the like entangled with the brush bristles 23 and the like are removed. 2 is pushed to the opposite side of the belt 36 , the leaf spring 42 is compressed, and the rotary brush 2 slides by that amount, whereby the convex part a 'of the joint 41 provided on the rotary brush 2
The rotating brush 2 can be removed from the lower case 6 by lifting the rotating brush 2 upward as it is.

The Oldham coupling 28 remains engaged with the driving shaft coupling 50 of the transmitted portion 4. However, when the Oldham coupling 28 is lifted upward, the Oldham coupling 28 comes off depending on the positional relationship between the driving shaft coupling 50 and the Oldham coupling 28. However, the Oldham coupling 28 does not come off by removing the rotating brush 2 in the manner described above.

[0048] When installing the rotary brush 2 to the lower case 6, insert the bearing assembly body 25 provided at one end of the rotary brush 2 between Li Bed 29, 29 formed integrally with the lower case 6, the rotating brush 2 into the leaf spring 42 side, and the other end joint 41 is attached to the case 6 while the Oldham joint 28 is still attached to the case 6.
And are engaged with each other so as to be able to engage with the concave portions a. When the rotating brush 2 is securely engaged, the lid 5a
Can be attached as before.

As described above, even if the rotational center of the rotating brush 2 and the transmitted portion 4 are slightly displaced from each other, the rotating force of the transmitted portion 4 can be reliably applied to the rotating brush 2 because the Oldham coupling 28 is provided therebetween. Is transmitted to

In the first embodiment and the second embodiment,
A lid 5a is provided for attaching and detaching the rotating brush 2, and the lid 5a
Although a detachable and rows Tsu simultaneously, engagement of the rotary brush 2 and the driving shaft coupling 40 in the first embodiment, also rotates the brush chamber position of engagement with the rotary brush 2 and the Oldham coupling in the second embodiment 16 and the bearing assembly 25 side of the rotary brush 2 is provided with an upper case 5 and a lower case 6 forming a mechanism chamber 17.
When the size of the opening 32 provided on the wall of the bearing assembly is made larger than the outer diameter of the bearing assembly 25, the rotating brush 2
The lid 5a can be attached to and detached from the dust suction opening 10.
Becomes unnecessary.

[0051]

As described above, the present invention has the following advantages. First rib and second rib
The gear is held between the gear and the
Movement is restricted, so remove the rotating brush from the main unit.
The rotating brush is moved in the axial direction to
When releasing the connection with the shaft coupling, set the gear position
There is no danger of moving in the axial direction
The third bearing provided on the other end side of is attached by a second spring.
The rotating brush in the axial direction toward the other end.
Even if it moves, the movement of the gear is regulated as described above
As a result, the belt does not come off or slip
In addition, it is possible to increase the axial movement range of the rotating brush.
It is easy to remove the rotating brush from the main body. Ma
Also, the main body side has a bar that connects the main shaft coupling and the driven shaft coupling.
The rotating brush makes the structure of the rotating brush simple and strong.
Degree can be secured. Also remove the rotating brush from the body
The spring will not be exposed to water even if
And the rotating brush itself has no moving parts,
No water enters the movable parts by washing with water.

Then, both ends of the first shaft are connected to the first bearing by the first bearing.
2), the belt is pulled to the first shaft.
Maintain stable even if excessive force is applied due to tension
Therefore, wear and vibration do not occur on the first shaft.
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 displaced, it is corrected by the Oldham coupling 7 to reduce the rotational force of the electric motor. It can be transmitted smoothly to the rotating brush.

By providing the rotating brush chamber with the engaging position of the rotating brush and the clutch or the Oldham coupling, the rotating brush can be attached and detached from the dust suction opening, so that there is no need to provide a separate lid body in the upper case. Therefore, the number of parts can be reduced and the number of assembling steps can be reduced, and an inexpensive suction port can be provided.

[Brief description of the drawings]

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

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

FIG. 3 is an enlarged view of a main part of FIG. 2;

FIG. 4 is a sectional view taken along the line AA in FIG. 2;

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

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

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

FIG. 8 is an enlarged view of a main part of FIG. 7;

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

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

11 is a plan view of FIG. 10 except for the upper part of the main body.

[Explanation of symbols]

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

Claims (2)

(57) [Claims] 1. A main body which houses a driving device and has an opening opposed to a cleaning surface, is rotatably supported in the main body along the opening, and is reversible and detachable in the axial direction. A rotating brush having a gear at one end thereof, and a belt provided in the main body and transmitting the rotating force of the driving device to the gear, wherein the rotating brush is detachable from the gear. A first shaft provided at one end of the rotating brush for rotating the gear, and a first shaft rotatably supporting a distal end of the first shaft. , A first rib provided on the main body side to hold the first bearing, a main shaft coupling that rotates integrally with the gear, and a driven shaft that rotates integrally with the rotary brush Joint and one end of the rotating brush A first spring for urging the first bearing in a direction in which the driving shaft coupling and the driven shaft coupling are coupled, and rotating the first shaft between the gear and the driving shaft coupling. A second bearing freely supported on the main body side between the gear and the driving shaft coupling, and a second bearing in an axial direction of the second bearing ;
A second shaft provided on the other end of the rotating brush for rotating the rotating brush; and a second shaft rotatably supporting a distal end of the second shaft. And a second spring provided on the other end side of the rotating brush and for urging the third bearing in a direction in which the main driving shaft coupling and the driven shaft coupling are coupled to each other. A suction port body for a vacuum cleaner, characterized in that: 2. The suction port body for an electric vacuum cleaner according to claim 1, wherein an Oldham coupling is interposed between the main driving shaft coupling and the driven shaft coupling.