JP3242824B2 - 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 an improvement in a suction port of a vacuum cleaner.

[0002]

2. Description of the Related Art As a suction port of a vacuum cleaner, for example,
As shown in FIGS. 11 and 12, a suction airflow from a suction port 34 opened on the bottom surface of the suction port main body 33 inside a suction port main body 33 formed by abutting upper and lower cases 31 and 32 with a vacuum cleaner (not shown). Inflow passage 3 which is guided through a connecting pipe 35
6, a motor 37, and a rotary brush 40 which is disposed in the middle of the suction inflow passage 36 and is driven to rotate around a support shaft 39 via a belt 38 by the motor 37. Japanese Patent Publication No. 3-41634).

[0003]

However, in the above-described suction port body, since the rotating brush 40 rotates around the support shaft 39, a space larger than the radius of the rotating brush 40 is formed inside the suction port body 33 all around. And the suction port tends to be large, and the rotating brush 40
There was a risk of fingers getting caught when touching the hand. Furthermore, there is a range in which the bristles of the rotating brush 40 cannot reach,
There is also a problem that dust scraping efficiency in this range is poor.

[0004] An object of the present invention is to solve such a problem, and it is an object of the present invention to provide a suction port of a vacuum cleaner which can be reduced in size and improved in safety. Another object of the present invention is to provide a suction port of a vacuum cleaner capable of improving dust removal efficiency.

[0005]

According to a first aspect of the present invention, there is provided a suction port main body connected to a cleaner body, and a suction air flow from a suction port opened on a bottom surface of the suction port main body. In the suction opening body of the electric vacuum cleaner having a suction inflow path leading to a vacuum cleaner main body and a movable brush that is disposed on the suction inflow path in the suction port main body and is driven by a motor or a turbine, the suction port body is smaller than the movable brush. To the support shaft provided at the upper position
The movable brush is supported by a support plate rotatably supported on the movable brush.
And a straight groove in the support plate
Rotation driven by a motor or turbine
Set a pin on the body at a position eccentric from the center of rotation of the rotating body.
The pin is slidably engaged with the groove of the support plate.
Reciprocally swings around the support shaft in the longitudinal direction crossing the moving brush relative to the direction of the suction air flow by the
It is characterized in that as that.

[0006]

According to a second aspect of the present invention, a first aspect is provided.
In the invention according to item (1), the movable brush is detachable, and includes a plurality of bristles and blades symmetrical in the vertical direction.

[0008]

[0009]

When the movable brush is reciprocated back and forth around the support shaft as in the first aspect of the invention, the space required for the swing is smaller than the rotation space required for the rotary brush. According to the movable brush that reciprocates and swings, there is no danger of the finger being entangled as seen in the rotating brush.

[0011]

According to the second aspect of the present invention, one movable brush can be used depending on the type of floor, such as a tatami mat, a carpet, a carpet, etc., by reversing the movable brush and using a flocking or a blade.

[0013]

[0014]

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) FIGS. 1 to 3 show a first embodiment of the present invention. FIG. 1 is a plan view showing a part of a suction port body of a vacuum cleaner, which is cut away, and FIG. FIG. 3 is a vertical sectional side view, and FIG. In each of the figures, reference numeral 1 denotes a suction port main body, which connects an upper case 1a and a lower case 1b to a bumper 13;
Through the match. A suction pipe 3 is attached to a rear opening between the butting surfaces of the upper and lower cases 1a and 1b,
The suction port body 1 and the cleaner body (not shown) are connected via the suction pipe 3 and a hose (not shown). A suction port 2 is formed on the bottom surface of the lower case 1b so as to extend in the horizontal direction. The interiors of the upper and lower cases 1a and 1b are partitioned by a partition wall 24a and 24b into a suction inflow passage 25 for guiding the suction airflow 3a from the suction port 2 to the suction pipe 3, and a power transmission chamber 26.

Inside the suction port main body 1, the motor 4 is incorporated in the power transmission chamber 26, and the movable brush 5 driven by the motor 4 is incorporated in the suction inflow passage 25 above the suction port 2. The movable brush 5 has a plurality of bristles 5b implanted on the lower surface of a horizontally long base 5a, and is incorporated so that the bristles 5b face the suction port 2. A support shaft 8 is provided above the movable brush 5 with left and right bearings 10.
It is laid parallel to. One of the bearings 10 is provided with the partition wall 24.
a. The movable brush 5 integrally connects support plates 9 to the left and right ends of the base 5a, and inserts and supports the upper ends of the left and right support plates 9 so as to be swingable back and forth on the support shaft 8. A rotatable shaft 12 is inserted and supported below the bearing 10 in parallel with the support shaft 8.
The pulley 11 is fixed to one end facing the power transmission chamber 26 of the motor 4.
Hang the belt 14 on. The rotating body 6 is fixed to the other end of the shaft 12 facing the suction inflow passage 25 so as to be closely opposed to the outer end surface of the support plate 9. Therefore, the rotation of the motor 4 is transmitted to the rotating body 6 via the pulley 27, the belt 14, the pulley 11, and the shaft 12.

The rotating body 6 facing the outer end surface of the support plate 9
An eccentric pin 6a protrudes at a position deviated by x from the center of rotation on the end surface of the support plate 9, and a cam groove 9a is formed on the outer end surface of the support plate 9 so as to extend linearly in the vertical direction. The tip of the eccentric pin 6a is slidably engaged with 9a. Accordingly, the eccentric pin 6a reciprocally slides in the cam groove 9a by the rotation of the rotating body 6, whereby the support plate 9 reciprocally swings around the support shaft 8 in the front-rear direction crossing the direction of the suction airflow 3a. The movable brush 5 integrated with the support plate 9 reciprocates in the same direction.

In the above configuration, dust sucked together with the suction airflow from the suction port 2 of the suction port main body 1 by driving the cleaner body (not shown) is supplied to the suction inflow passage 25, the suction port pipe 3, and the hose (see FIG. (Not shown)) to the dust collecting chamber on the cleaner body side. At this time, the movable brush 5 swings back and forth around the support shaft 8 by the drive of the motor 4 to scrape dust settled on the floor, and the scraped dust is sucked together with the suction airflow. At this time, according to the movable brush 5 that reciprocates back and forth around the support shaft 8, the conventional rotary brush 4 shown in FIGS.
Since the swing space is smaller than the rotation space required for zero, the suction port body 1 can be reduced in size accordingly. In addition, there is no danger of the finger being entangled as seen in the rotating brush 40, and it can be used safely. The combination of the eccentric pin 6a of the rotating body 6 and the support plate 9 having the cam groove 9a with which the eccentric pin 6a engages enables the motor 4 to rotate even in a narrow space in the suction port main body 1. The rotation of the motor 4 can be changed to the oscillating motion of the movable brush 5 by other mechanisms.

(Second Embodiment) FIGS. 4 and 5 show a second embodiment of the present invention. In this embodiment, each upper end of the support plate 9 integrally connected to the left and right ends of the movable brush 5 is inserted and supported by the support shaft 8 so as to slide in the left and right direction along the support shaft 8. One support plate 9
The end face of the rotating body 6 facing the outer end face of the
On the other hand, a projection 9b is projected from the outer end surface of the support plate 9, and the tip of the projection 9b is brought into contact with the inclined cam 6b. Between the bearing 10 opposite to the other of the support plate 9 is interposed an elastic body 17 such as a coil spring, the elastic body 7
Due to the elastic force, the movable brush 5 is constantly pressed and urged in the direction toward the rotating body 6 to maintain the contact state between the tip of the projection 9b and the inclined cam 6b. Therefore, while the rotating body 6 makes one rotation, the movable brush 5 reciprocates linearly in the left-right direction intersecting the direction of the suction airflow 3a along the support shaft 8 by the difference between the inclined cams 6b. Other configurations are first
This is the same as that of the embodiment.

According to this embodiment, since the movable brush 5 reciprocates linearly in the left-right direction, the movement space is smaller than the rotation space required for the conventional rotating brush 40 as in the first embodiment. As a result, the size of the suction port body 1 can be reduced accordingly. In addition, there is no danger of the finger being entangled as seen in the rotating brush 40, and it can be used safely. The combination of the inclined cam 6b of the rotating body 6 and the support plate 9 having a projection 9b abutting on the inclined cam 6b allows the motor 4 to rotate even in a narrow space in the suction port main body 1 by the linear movement of the movable brush 5. The movement can be reliably and simply changed, but the rotation of the motor 4 can also be changed to the linear movement of the movable brush 5 by other mechanisms.

(Third Embodiment) FIGS. 6 and 7 show a third embodiment of the present invention. In this embodiment, the movable brush 5
A plurality of bristles 5b are planted on one of the upper surface and the lower surface of the horizontally long base 5a, and the blade 1
6 is embedded and fixed. The movable brush 5 is detachably connected to and supported by the left and right support plates 9. That is, at one end of the movable brush 5 on the power transmission side of the base 5a,
A tie rod 18 having a lever 18a is provided so as to freely move in and out of the left and right directions via an elastic body 17 such as a coil spring.
Is inserted into the concave portion 9c provided on the end face of the device so that it can be freely inserted and removed. On the other hand, a projection 5c is protruded from the other end of the base 5a.
c is inserted into a concave portion 9c provided on an end face of the support plate 9 facing the plug c so as to be freely inserted and removed. Therefore, the movable brush 5
Is a projection 5c and a tie rod 18 between the left and right support plates 9;
When the lever 18a is pinched and the tie rod 18 is immersed and moved toward the center in the left-right direction against the elastic force of the elastic body 17, the tip of the tie rod 18 comes out of the recess 9c. The movable brush 5 can be removed from between the left and right support plates 9. Other configurations,
For example, the movable brush 5 is driven by the motor 4 to
For the configuration that swings back and forth back and forth,
This is the same as that of the embodiment.

According to this embodiment, the left and right support plates 9
By changing the movable brush 5 upside down and replacing the brush 9, the brush bristles 5b or the blades 16 can be conveniently used according to the type of tatami mat, carpet, carpet or the like on the floor. In addition, the movable brush 5 of this embodiment can be similarly applied to the movable brush 5 of the second embodiment that reciprocates linearly in the left-right direction along the support shaft 8.

(Fourth Embodiment) FIG. 8 shows a fourth embodiment of the present invention. In this embodiment, a rotary brush 19 that is driven to rotate by the motor 4 is installed inside the suction port main body 1, and another second brush 21 is connected to the rotary brush 19 in front of the rotary brush 19. Place them in parallel. The second brush 21 is supported on a support shaft 22 installed in parallel in front of the rotating brush 19 so as to be swingable in the front-rear direction. The cam 20 is fixed to the portion, and the protrusion 21a at the upper end extending above the support shaft 22 of the second brush 21 is brought into contact with the peripheral surface of the cam 20. An elastic body 23 such as a coil spring is interposed between the upper end of the second brush 21 and the upper case 1a, and the elastic force of the elastic body 23 always causes the upper end of the second brush 21 to move. The tip of the projection 21 a is pressed against the peripheral surface of the cam 20 by urging the portion in the direction of the rotating brush 19.
Therefore, while the rotating brush 19 makes one rotation, the second brush 21 reciprocates back and forth around the support shaft 22 by the height of the projection 20a of the cam 20. Other configurations are the same as those of the first embodiment.

According to this embodiment, FIGS.
The dust that has settled on the floor in front of the rotary brush 19, which has not reached the conventional rotary brush 40, can be scraped off by the second brush 21, and the dust collection efficiency can be further improved. . Further, the motor 4 for driving the rotating brush 19 can be used also as a power source of the second brush 21. The combination of the cam 20 and the projection 21a which comes into contact with the cam 20 allows the rotation of the rotary brush 19 to rotate even in the narrow space in the suction port main body 1.
The rotation of the rotary brush 19 can be changed to the rocking motion of the second brush 21 by other mechanisms, although the rotation can be reliably and easily changed to the first rocking motion.

(Fifth Embodiment) FIGS. 9 and 10 show a fifth embodiment of the present invention. In this embodiment, a rotary brush 19 driven and rotated by a motor 4 is provided inside the suction port main body 1.
And the second brush 21 is disposed on one side of the rotating brush 19 on the left and right sides. The second brush 21
The rotating brush 19 is supported by a support shaft 22 installed in a direction perpendicular to one of the left and right sides of the rotating brush 19 so as to be swingable in the left and right direction around the shaft 22, while a slope cam 19 a is provided at one end of the rotating brush 19 in the left and right direction. The projection 21a at the upper end extending above the support shaft 22 of the second brush 21 is brought into contact with the inclined cam 19a. An elastic body 23 such as a coil spring is interposed between the upper end of the second brush 21 and the lower case 1b, and the upper end of the second brush 21 is always moved by the elastic force of the elastic body 23. By pressing the portion in the direction of the rotating brush 19, the tip of the projection 21a is pressed against the inclined cam 19a. Therefore, while the rotating brush 19 makes one rotation, the second brush 21 reciprocates right and left around the support shaft 22 by the difference between the inclined cams 19a. Other configurations are the same as those of the first embodiment.

According to this embodiment, FIGS.
The dust settled on the floor on one side of the rotating brush 19, which cannot be reached by the conventional rotating brush 40, can be scraped off by the second brush 21 to further improve the dust collection efficiency. Can be. Further, the motor 4 for driving the rotating brush 19 can be used also as a power source of the second brush 21. By the combination of the slope cam 19a and the projection 21a which comes into contact with the slope cam 19a, the rotation of the rotary brush 19 can be reliably and laterally oscillated by the second brush 21 even in a narrow space in the suction port main body 1. It can be easily changed, but the rotating brush 1
9 can be changed into a swinging motion of the second brush 21.

In the present invention, the movable brush 5 and the rotating brush 1
As the power source 9, a turbine or the like can be used in addition to the motor 4.

[0028]

According to the first aspect of the present invention,
The operation space of the movable brush 5 is smaller than the rotation space required for the conventional rotating brush 40, so that the suction port body 1 can be reduced in size accordingly. The rotating brush 40
It can be used safely without the danger of getting your fingers caught as seen in

According to the second aspect of the present invention, one movable brush is turned upside down and replaced according to the type of floor surface, so that brush hairs or blades can be used properly, which is convenient.

[0030]

[Brief description of the drawings]

FIG. 1 is a plan view showing a part of a suction port body of a first embodiment in a cutaway manner.

FIG. 2 is a vertical sectional side view of a main part of the suction port body of the first embodiment.

FIG. 3 is a longitudinal sectional front view of a main part of the suction port body of the first embodiment.

FIG. 4 is a plan view showing a part of a suction port body according to a second embodiment in a cutaway manner.

FIG. 5 is a longitudinal sectional front view of a main part of a suction port body of a second embodiment.

FIG. 6 is a longitudinal sectional front view of a main part of a suction opening body of a third embodiment.

FIG. 7 is a sectional view of a movable brush according to a third embodiment.

FIG. 8 is a longitudinal sectional side view of a main part of a suction port body of a fourth embodiment.

FIG. 9 is a plan view of a main part of a suction port body according to a fifth embodiment.

FIG. 10 is a vertical sectional front view of a main part of a suction port body according to a fifth embodiment.

FIG. 11 is a plan view showing the inside of a conventional suction port body.

FIG. 12 is a vertical sectional side view of a main part of a conventional suction port body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suction port main body 2 Suction port 3a Suction air flow 4 Motor 5 Movable brush 5a Base 5b Brush bristles 8 Support shaft 16 Blade 19 Rotary brush 21 Second brush 22 Support shaft 25 Suction flow path

Continuation of the front page (56) References JP-A-6-86745 (JP, A) JP-A-7-313411 (JP, A) JP-A-63-119725 (JP, A) JP-A-63-194621 (JP) , A) Fully open 63-123256 (JP, U) Fully open 48-19370 (JP, U) Fully open 48-74461 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB Name) A47L 9/04

Claims (2)

(57) [Claims] An inlet body connected to the cleaner body;
A suction inflow passage for guiding the suction airflow from the suction opening opened in the bottom surface of the suction opening main body to the cleaner main body, and a movable movable by a motor or a turbine disposed on the suction inflow passage in the suction opening main body. A suction shaft of a vacuum cleaner having a brush and a support shaft provided above the movable brush.
The movable brush is supported by a rotatable support plate.
While holding a linear groove in the support plate in the vertical direction.
On the other hand, to a rotating body driven by a motor or a turbine.
A pin is provided at a position eccentric from the rotation center of the rotating body,
This pin is slidably engaged with the groove of the support plate.
Therefore, the movable brush is moved in the direction of the suction airflow.
Swing back and forth around the support shaft in the front and rear direction
An inlet for an electric vacuum cleaner, characterized in that the inlet is closed. 2. The method according to claim 1, wherein said movable brush is detachable.
In addition, a plurality of bristles and blades are symmetrically provided
The suction opening of the vacuum cleaner according to claim 1 .