JP2849196B2 - Suction port with rotary cleaning body and vacuum cleaner having the same - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to an electric vacuum cleaner, and more particularly to a rotating device in which lint, hair, cotton dust, and the like are not entangled with the end of a blade provided at a cleaner inlet. It relates to a suction port with a cleaning body.

[Conventional technology]

Conventionally, a rotary cleaning body-equipped suction port having a blade is provided, for example, by disposing a flexible plate-like blade extending substantially in the axial direction, as described in JP-A-1-265926, By providing a fixed ridge band at a position close to the trajectory, it is devised to reduce lint or hair from getting entangled in the rotary cleaning body.

[Problems to be solved by the invention]

However, when the lint or the like is long, the effect of the blade alone is that the lint or the like once caught is wound around the blade and the contraction force is strengthened, and only the action of removing the rear end of the lint and the like by the fixed ridge band and the centrifugal force. In this case, the contraction force cannot be reduced, so that the problem of lint or the like wrapping around the blade cannot be completely solved.

An object of the present invention is to eliminate the disadvantages of the prior art described above,
An object of the present invention is to provide an improved suction opening with a rotary cleaning body and a vacuum cleaner provided with the suction opening, in which lint or hair is not entangled at the blade end.

[Means for solving the problem]

The object is to provide a suction port provided with a soft flexible blade that is disposed on the outer periphery of a rotary cleaning body that rotates inside a substantially box-shaped suction port and that is extended substantially in the axial direction. A protruding body that protrudes in the axial direction from a side wall facing one end and is in contact with the blade is provided, and the protruding body is more axially moved than a contact position with the blade end face. This is achieved by a configuration that protrudes from

[Action]

Lint, hair, etc., scraped off from the floor by the blade of the rotary cleaning body move toward the end of the blade having a weak waist and move onto the protruding body, but the protruding body is a non-rotating body. Therefore, the tension in the axial direction of the lint and hair is reduced, and at the same time, the blade is swung off by the centrifugal force of the rotating blade and sucked by the suction force of the vacuum cleaner. Lint, hair, etc. are not entangled.

〔Example〕

 Hereinafter, the present invention will be described based on illustrated embodiments.

FIG. 1 is a plan view of the mouthpiece main body 1, showing a state in which an upper case (not shown) has been removed.

As shown in FIG. 1, the lower case 2 is provided with a bumper 3 for shock absorption on the front and side, a wheel 5 for movement is attached, and furthermore, dust from the suction port 6 is removed. A bent joint 4 is provided on the rear side to be sent to a vacuum cleaner main body (not shown) while being put on the suction airflow. A rotary cleaning body 7 is disposed at the suction port 6.
Are rotatably supported by bearings 9 at both ends of the rotary cleaning body 7.
Has a pulley 8 on one side. The rotary cleaning body 7 is driven by rotating a pulley 8 by a belt 12 stretched around a shaft 10 of a motor 11. Also, the motor 11
The rotation and stop are controlled by the control circuit 13. As shown in FIG. 3, the rotary cleaning body 7 has a base 16 having a fitting groove 17 which is continuous in a spiral shape in the longitudinal direction thereof, and a soft flexible body having a projection 18 fitted in the fitting groove 17. And a flexible blade 14. As shown in FIG. 4, the blade 14 has a minute window 15 near the cleaning surface.

5 to 7 show another embodiment in which the shape or arrangement of the minute window 15 is changed. FIG. 8 shows another embodiment having a minute groove 19 instead of the minute window 15,
The side surface of the blade 14 has an expanding portion 20 extending continuously in the longitudinal direction.

Here, the rotary cleaning body 7 is in any case a blade 14.
Is manufactured in a flat plate shape, and before attaching the pulley 8 from the base 16, after fitting the projection 18 along the spiral fitting groove 17,
The pulley 8 is attached and assembled.

Here, the present invention will be described with reference to FIG. 2. A protrusion 22 made of a flexible material such as a soft vinyl chloride synthetic resin is provided on the side wall 6a of the suction port 6 in the longitudinal direction.
It is arranged so as to protrude in the axial direction beyond the length in contact with 14a. The shape of the protruding body 22 is substantially cylindrical or substantially prismatic,
On one end side, a ring-shaped protrusion 22a is formed, and the protrusion 22a
The recess 22b sandwiched between the holes 6b is formed in the side wall 6a.
(Or groove). Therefore, the lint or hair scraped up from the floor surface and wrapped around the blade 14 by the suction force of the vacuum cleaner and the frictional force of the blade 14 are contracted by the attraction with the floor surface, and the blade 14 is bent.
When the floor-side end of the lint or hair is separated, the elasticity of the blade 14 and the centrifugal force accompanying the rotation weaken the contracting force, and the blade 14 is sucked by the cleaner to remove the entanglement. Also,
Lint and hair entangled near the end of the blade 14
In the same manner as described above, the blade 14 bends, moves toward the end where the repulsion against the deflection is weak, and rides on the protrusion 22. Then, since the protruding body 22 is a non-rotating body, the tightening action by the lint or hair is weakened, and the lint or hair is repeatedly beaten and swung by the rotating blade 14 and sucked by the vacuum cleaner. Then, the entanglement is released.

According to the present embodiment as described above, the rotary cleaning body 7 is driven by the motor 11 as shown in FIG.
The portion of the blade 14 that touches the cleaning surface at the tip bends, and this elastic force causes ordinary dust to be scraped up, lint and hair and the like to be once caught and scratched by the minute window portion 15, and to smoothly enter the suction airflow. Since it is collected by the cleaner body via the bent joint 4, lint, hair, cotton dust, etc. do not become entangled or wrapped around the cleaning rotator 7, and a protrusion is formed near the tip of the blade 14. Therefore, there is no danger of damaging the floor surface, and in particular, various effects can be obtained such that the hair of the carpet is not peeled off on the carpet. Furthermore, since there is no wrapping of lint or hair at the suction end where the blade 14 does not exist, there is no need to remove lint or hair from the rotary cleaning body 7,
It also has the effect of improving usability.

The effect is the same in the other embodiments shown in FIGS. That is, FIG. 5 shows a small window 15 having a triangular shape with a reduced area, and with a very small probability, it is possible to further minimize the penetration of lint and hair through the small window 15. FIG. 6 shows a case where the minute window portion 15 is circular, and FIG. 7 shows a case where the minute window portion 15 is arranged in two stages so that lint and hair can be easily hooked. Here, FIG. 7 illustrates a case where the minute window portion 15 is provided in two stages,
This may be performed in multiple stages as long as the strength and flexibility of the material of the blade 14 are within appropriate ranges.

Further, in FIG. 8, when the minute grooves 19 are provided in the blade 14 instead of the minute windows 15, ie, as shown in an enlarged view in FIG. The case where the groove 19 is provided on the side that comes into contact with the surface has been exemplified, but the reason is as follows. That is, when the blade 14 is manufactured by inexpensive injection molding, a weld line is generated when a window is present, and a crack is easily generated from that portion. However, the groove 19 can prevent this.
In addition, as shown in FIG. 8, the flexibility of the blade 14 can be changed between the tip portion of the blade 14 and the vicinity of the base 16 by continuously providing the inflatable portion 20 on the side surface thereof. Thus, the rotating cleaning body 7 having a waist, that is, having a high elasticity and a high scraping effect can be obtained.

〔The invention's effect〕

As described above, according to the present invention, lint, hair, cotton dust, and the like are not entangled and wrapped around, and do not damage the cleaning surface or peel off the carpet hair. A high-performance suction opening with a rotary cleaning body and a vacuum cleaner having the suction opening can be provided.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a suction opening with a rotary cleaning body according to the present invention, in which an upper case (not shown) is removed, and FIG. 2 is an enlarged sectional view of a main part of FIG. FIG. 3, FIG. 3 is a longitudinal sectional view of the rotary cleaning member indicated by reference numeral 7 in FIG. 1, FIG. 4 is a front view of the blade indicated by reference numeral 14 in FIG. FIG. 8 is a longitudinal sectional view showing another embodiment of the rotary cleaning body 7, and FIG. 9 is an enlarged view of a portion A in FIG. 6 ... suction port, 6a ... side wall, 7 ... rotary cleaning body, 14 ...
Blade, 22 ... Projection.

Claims (5)

(57) [Claims] 1. A suction port provided with a soft flexible blade which is located on the outer periphery of a rotary cleaning body which rotates inside a substantially box-shaped suction port and which is extended substantially in the axial direction thereof. A protruding body, which protrudes in the axial direction from a side wall facing at least one end and abuts on the blade, is provided, and the protruding body is more axial than a contact position with the blade end face. A suction opening with a rotary cleaning body, characterized in that it is configured to protrude in the direction. 2. A suction opening with a rotary cleaning member according to claim 1, wherein the protrusion is made of a soft and flexible material. 3. A suction opening with a rotary cleaning body according to claim 1, wherein a plurality of protrusions are provided. 4. A suction opening with a rotary cleaning body according to claim 1, wherein the protrusion is made of a material having higher wear resistance than the blade. 5. An electric vacuum cleaner having the suction opening with a rotary cleaning body according to claim 1.