JPS6135861B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dust removal device for a vacuum cleaner, which improves the dust removal effect of a main filter.

Dust removal from the main filter of conventional vacuum cleaners was carried out in conjunction with the cord being drawn out and retracted by the cord reel, so even if the main filter was rotated to remove dust, the rotation speed was slow, so the dust removal effect was insufficient. I couldn't get it.

The present invention has succeeded in solving the above-mentioned conventional drawbacks, improving the dust removal effect, and further improving the sustainability of the suction force.One embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, 1 is a main body which houses an electric blower 2 and a cord reel 3 for winding a cord. Reference numeral 4 denotes a dust box having an intake port 5 formed therein, which is detachably attached to the main body 1 with a buckle 6. Reference numeral 7 designates a clutch with a gear, which is rotatably attached to a boss 9a of the filter bulkhead 9 with a screw 10. Rotation of the clutch portion 7a is transmitted to the cord reel 3, and a gear portion 7b is interlocked and connected with a large gear 12. ing. The rotating shaft 12a of the large gear 12 is rotatably supported by a bearing portion 9b formed on the filter partition wall 9, and its tip end is connected to the main filter 13.
The large gear 12, the main filter 13, and the prefilter 14 rotate integrally through the shaft portion 13a of the prefilter 14. Reference numeral 16 denotes a clutch plate having a plurality of claws 16a on its outer periphery, and a thread is cut on the inner circumferential surface of a rotary cylinder shaft 16b in the center of the clutch plate.
It is screwed into a screw cut on the outer periphery of the bearing part 9b. A plurality of pawls 16c are formed around the axis of the bottom surface of the clutch plate 16, and mesh with a plurality of pawls 12b formed around the axis of the large gear 12.

Also, a boss 1 provided on the side surface of the clutch plate 16
6d, one end of a torsion spring 17 that fits around the bearing portion 9b of the filter partition wall 9 and the rotating shaft 16b of the clutch plate 16 screwed thereto is fixed, and the other end of the torsion spring 17 is provided on the filter partition wall 9. Recess 9
It is fixed at c.

Reference numeral 18 denotes a filter case gasket that comes into contact with the outer periphery of the prefilter 14, is fixed to the filter case 19, and serves as a dust tighter. A dust remover 20 is provided in the lower part of the filter case 19 so as to be in contact with the folds of the main filter 13, and is fixed to a boss 21 provided in the lower part with screws 22. 23 is a dust-tight gasket attached to the outer periphery of the filter partition wall 9. A push button 24 is built into a handle 25 provided at the top of the dust box 4, and is adapted to move a button 26 protruding from the filter case 19 in the vertical direction. The button 26 is interlocked with an arm 27, an arm shaft 28, and a stopper 29, and these are made to swing around the arm shaft 28 as the button 26 moves up and down. The stopper 29 has its tip engaged with one of the pawls 6a on the outer periphery of the clutch plate 16,
Rotation of the clutch plate 16 in one direction is prevented. When the button 26 is pressed, the stopper 29 swings and is disengaged from the pawl 16a, thereby releasing the rotation of the clutch plate 16. A filter plate 30 is fixed to the main filter 13, and a dust packing 31 is fixed thereto.

In the above configuration, when the cord is pulled out, the cord reel 3 rotates, and the rotation is transmitted to the geared clutch 7 by the coupling device 11. The large gear 12 that meshes with this gear portion 7b rotates, and the clutch plate 16 that meshes with the pawl 12b of the large gear 1 rotates.
The clutch plate 16 is rotated in conjunction with the pawl 16c. Due to this rotation, the torsion spring 17 is tightened, and at the same time, the clutch plate 16 moves toward the intake port 5 side by the screw of the clutch plate 16 and the screw of the bearing part 9b of the filter partition wall 9. When the clutch plate 16 moves to a certain extent, Pawl 1 of clutch plate 16
6c and the pawl 12b of the large gear 12 are disengaged, and the large gear 12 rotates together with the main filter 13 and prefilter 14 without transmitting rotation to the clutch plate 16. By rotating the main filter 13,
Vibrations are applied to the folds of the main filter 13 by the action of the dust remover 20 in contact with the folds, and the fine dust adhering to the main filter 13 falls. Further, the clutch plate 16 is fixed by the action of the stopper 29 with the torsion spring 17 wound tightly.

Next, press the buckle 6 to remove the dust box 4 from the main body 1, and press the push button 24.
When you press , the button 26, arm 27,
The arm shaft 28 and the stopper 29 work, and the stopper 29 separates from the claw 16a on the outer periphery of the clutch plate 16, releasing the rotation stopper. As a result, the tightened torsion spring 17 attempts to return to its original state, causing the clutch plate 16 to rotate at a high speed. Then, since the clutch plate 16 rotates in the opposite direction when the torsion spring 17 is tightened, the screws of the clutch plate 16 and the filter partition wall 9 move toward the side of the main body 1 by the action of the screws. After moving to a certain extent, clutch plate 1
The pawl 16c of 6 and the pawl 12b of the large gear 12 mesh with each other, and the large gear 12 is interlocked with the rotation of the clutch plate 19.
rotates, and the main filter 13 and pre-filter 14, which rotate together with it, rotate, and the folds of the main filter 13 vibrate due to the action of the dust remover 20, removing fine dust attached to the main filter 13. Fall. At this time, if the spring pressure of the torsion spring 17 is made strong, the fine dust adhering to the filter 13 will be strongly removed at high speed, and at the same time, the centrifugal force generated by the high speed rotation will cause the dust to be trapped deep inside the folds. It also spits out fine dust, doubling the dust removal effect.

According to the present invention, by pulling out the cord,
The rotating body rotates the main filter to remove dust, and at the same time, the clutch plate, which is interlocked with the rotating body via a one-way clutch, transfers the energy that rotates the main filter in the opposite direction to the torsion spring. At this time, the clutch plate slides due to the screw connection between the clutch plate and the bearing, and the accumulation is maintained without excessive energy accumulation.If the driving force is released at once when disposing of garbage, etc., the clutch plate can be slid at high speed. The main filter can be rotated, and therefore the dust removal effect of the main filter can be doubled not only by the vibration of the dust remover but also by the centrifugal force of the rotation of the filter. For example, when accumulating driving force by the power of cord drawer,
The cord extraction is not locked due to excessive accumulation, and its industrial value is great.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a central vertical cross-sectional view thereof, and FIG. 2 is an exploded perspective view of a main part thereof. 1... Main body, 3... Cord reel, 4... Dust box, 7
...Geared clutch, 9...Filter bulkhead, 9b...Bearing portion with thread cut on outer periphery, 11...Coupling device, 1
2... Gear size, 12b... Pawl, 13... Main filter, 16... Clutch plate, 16b... Rotating cylinder shaft with thread cut on the inner circumference, 16c... Pawl, 17... Torsion spring, 20... Dust remover, 24... Push Button, 29...stopper.

Claims (1)

[Claims] 1. A dust removal device for a vacuum cleaner that removes dust by rotating a filter when pulling out a cord, which is provided with a wheel that rotates the filter in conjunction with a cord reel, and is fitted onto the wheel as it rotates. , which has a threaded portion that is interlocked and connected via a one-way clutch and is threaded into a threaded portion cut on the outer periphery of a bearing portion provided on the filter partition wall to receive the rotating shaft; A clutch plate is provided which rotates and slides in a direction to disengage the one-way clutch via a threaded portion, and ends thereof are fixed between the clutch plate and the filter partition wall, and energy is stored by rotation of the clutch plate. A dust removal device for a vacuum cleaner equipped with a torsion spring.