JPS6028378Y2 - vacuum cleaner - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a vacuum cleaner equipped with a dust removal device for removing dust attached to coarse and fine filters.

Conventionally, as this type of vacuum cleaner, for example,
As shown in Publication No. 40155, a shaft is provided between the coarse filter and the fine filter, protruding from the fine filter side toward the coarse filter side, and rotated by an appropriate drive source, There is a device that is provided with a dust remover for repelling the fine filter by its rotation, and an actuator for repelling the coarse filter by its rotation at the end of the shaft.

According to this article, etc., the dust removal means for the coarse filter is configured such that the actuator flicks a protrusion provided only on one side of the coarse filter, which has a roughly rectangular cross section, and is located only at one end. It has been pointed out that when a protrusion is flicked by the actuator, even if the part near the protrusion vibrates well, the vibration is not sufficiently transmitted to the other sides away from the protrusion. As a result, it is not possible to sufficiently remove dust adhering to each side remote from the protrusion.

However, in order to eliminate the above-mentioned conventional drawbacks, the present invention has the following features:
In particular, on the side of the coarse filter that faces the end of the dust removal shaft,
A plurality of elongated frame pieces protruding radially across the axis within a plane orthogonal to the axis of the shaft, each open end of which is connected by a coarse filter frame, and each of the frame pieces and the coarse filter frame on the outer periphery. several coarse filter parts arranged parallel to the plane on the inner side surrounded by and each having a proximal end fixed to the surface opposite to the axis of the coarse filter frame, and an open end thereof. rib members having the same number as the coarse filter portions, which protrude along each of the coarse filter portions to approximately the center thereof, and have protrusions at each open end that can penetrate the coarse filter portions and engage with the actuator; and
Therefore, by uniformly repelling the entire surface of the coarse filter facing the axis, and by increasing the number of times of repelling, the entire coarse filter can be sufficiently vibrated to remove adhering dust. This ensures that every corner of the coarse filter can be removed.

The details will be explained below with reference to FIGS. 1 to 7 showing embodiments of this invention.

In the figure, 1 is a vacuum cleaner frame, which includes a main frame 2 and a dust container 3 separably connected to the front of the main frame 2.
It consists of.

The main frame 2 is divided into two parts on the left and right, and
The dust container 3 has an opening on the main frame 2 side.

4 is a first partition for dividing the inside of the main frame 2 into an electric blower chamber 5 and a cord winding chamber 6 above the electric blower chamber 5; 7 extends downward from the first partition 4; A second partition whose lower end is located at a distance from the bottom surface of the main frame 2, and a sound deadening chamber 8 at the rear of the electric blower chamber 5.
form a section.

Reference numeral 9 denotes an electric blower elastically supported within the electric blower chamber 5, and has an intake port 9a on the front side and an exhaust port 9b on the rear side.

Reference numeral 10 denotes a communication port that opens on the front surface of the main frame 2, and communicates with the intake port 9a of the electric blower 9.

Reference numeral 11 denotes a cylindrical sound-absorbing tube with ventilation fixed to the electric blower 9 so as to cover the intake port 9b thereof, and 12 denotes the lower surface of the first partition 4, the second partition 7, and the main frame. Sound-absorbing materials 2 and 13 are attached to the inner bottom surfaces of the sound-absorbing chamber 8, respectively, and an exhaust cover 13 is removably attached to the rear opening of the silencing chamber 8, and is provided with an exhaust port 13a consisting of a large number of small holes. .

Reference numeral 14 denotes an air exhaust passage for communicating the electric blower chamber 5 and the silencing chamber 8, which runs along the bottom surface of the main frame 2 and between the tip of the second partition 7 and the bottom surface of the main frame 2. extends through the space of

A cord winding device 15 is installed in the cord winding chamber 6, and is fixed between the first partition 4 and the main frame 2 so that its rotating shaft 15a is vertical.

The cord winding device 15 is urged to rotate in one direction by a mainspring spring (not shown), and a braking device (not shown) is provided for braking the cord winding device against the action of the mainspring spring. ).

Reference numeral 16 denotes a cord take-out port drilled in the rear surface of the main frame 2, through which the cord wound and stored in the cord winding device 15 can be taken out.

17 is a recess opening in the front surface of the main frame 2; 18;
is a rotating shaft supported rotatably about a substantially horizontal axis by a first bearing 19 and a second bearing 20 spaced ahead thereof, and its front end is connected to the main frame 2.
It penetrates the front surface of and protrudes into the recess 17.

21 is an annular first gear formed on the upper surface of the cord winding device 15, and 22 is a second gear fixed to the rotating shaft 18, which can mesh with the first gear 21.

A claw clutch 23 is attached to the front end of the rotary shaft 18 so as to be slidable and rotatable integrally with the rotary shaft 18, and a coil spring 24 stretched between it and the second bearing 20. It is pushed forward by this.

Reference numeral 25 designates an inlet hole bored in the front surface of the dust container 3, and 26 designates a coarse filter frame made of synthetic resin disposed approximately horizontally within the dust container 3, with a cross section whose central portion is raised upward. It has a hat shape, and therefore, step portions 26a are formed on both left and right sides of the center portion of the coarse filter frame.

Reference numeral 27 denotes a coarse filter stretched over the vertical portion and central horizontal portion of the coarse filter frame, and the coarse filter stretched over the center portion is divided into four sections by the coarse filter frame.

That is, the central part of is arranged horizontally to the lower end of the rotating shaft for driving dust removal described later so as to be perpendicular to the axis thereof, and Four elongated frame pieces (fourth
(see figure) and four coarse filter parts (also see figure 4) arranged horizontally on the inner side surrounded by each frame piece and the coarse filter frame on the outer periphery.

Reference numeral 28 denotes a cylindrical fine filter disposed above the coarse filter frame 26 in the dust container 3, and has a substantially chrysanthemum-shaped cross section.

The fine filter 28 is formed by folding a substantially rectangular flat plate filter material made of filter paper or the like into a pleat shape and rolling it into a substantially C shape so that both ends of the filter material face each other with a gap between them. , is arranged in the dust container 3 so that its axis is vertical.

29 is a filter frame made of synthetic resin that is integrally molded on both the upper and lower ends of the fine filter 28 and on both ends of the filter medium;
The lower end opening of the fine filter 28 is closed by a lower filter frame 29.

An upper filter frame 29 fixed to the upper end of the fine filter 28 extends substantially horizontally from the outer periphery of the fine filter 28 toward the inner wall of the dust container 3.
is fixed in the dust container 3 via the upper filter frame 29.

The rear end of the upper filter frame 29 is integrally formed with an upright wall portion 29a that stands up above the rear end of the upper filter frame 29, and this upright wall portion 29a opens the opening of the dust container 3 above the upper filter frame 29. Therefore, the upper end opening 28a of the fine filter 28 is closed to the upper filter frame 2.
9. Closed by the standing wall part 29a and the dust container 3.

30 is a communication port defined by the filter frame 29 and communicating with the inside of the fine filter 28;
It opens on the rear surface and matches the communication port 10 on the main frame 2 side when the main frame 2 and dust container 3 are connected, so that the coarse filter 27 and the fine filter 2 are
8. A dust suction air passage is formed through the communication port 30 and the communication port 10 to reach the electric blower 9.

31 is a mounting plate screwed onto a boss projecting upward from the upper surface of the upper filter frame 29; 32 is a mounting plate for the fine filter 28 supported between the mounting plate 31 and the lower filter frame 29; The dust removing device 33 is a shaft of the dust removing device 32, and is supported by the mounting plate 31 and the lower filter frame 29 so as to be rotatable about the axis of the fine filter 28.

34 is a flange portion protruding from the middle portion of the shaft 33;
Reference numeral 35 denotes a portion 2 projecting upward from the upper surface of the flange portion 34.
The protrusion 36 has an elastic flat dust remover whose base end is wound around one of the two protrusions 35, and is bent at a substantially right angle in the middle part, and its tip ends with the fine filter 28. It invades between the folds.

The intermediate portion of the dust remover 36 extends between the shaft 33 and the other protrusion 35, so that the shaft 33
When rotated clockwise in the figure, the bent part of the dust remover 36 comes into contact with the other protrusion 35, and the tip of the dust remover 36 penetrates relatively deeply between the folds of the fine filter 28, and the shaft 3
3 rotates counterclockwise, the dust remover 36 rotates clockwise around one protrusion 35 and comes into contact with the shaft 33, so that the tip of the dust remover 36 is relatively shallow and closes to the fine filter 2.
The torque required to penetrate between the folds of 8 and eventually rotate the shaft 33 clockwise is greater than the torque required to rotate the shaft 33 counterclockwise.

Regardless of whether the shaft 33 rotates clockwise or counterclockwise, as the shaft 33 rotates, the dust remover 36 sequentially flips the top of each fold of the fine filter 28.
8 falls onto the coarse filter frame 26, and since the fine filter 28 is arranged so that its axis is perpendicular, the fine filter 28 falls onto the coarse filter frame 26.
This is convenient because all of the dust that has been brushed off from 8 falls downward.

37 is a third gear fixed to the upper end of the shaft 33; 38
is an internal gear rotatably supported by the mounting plate 31, and can mesh with the third gear.

39 is an annular fourth gear formed on the upper surface of the internal gear 38; 40 is a pawl clutch rotatably supported by the upright wall 29a of the filter frame 29; When the container 3 is connected, it can engage with the pawl clutch 23 on the main frame 2 side.

A fifth gear 41 is fixed to the inner end of the pawl clutch 40 and can mesh with the fourth gear 39.

Note that the rotating shaft 18, the first gear 21, and the second gear 22
, pawl clutch 23.40, third gear 37, internal gear 3
8, a fourth gear 39, a fifth gear 41, and the like constitute a transmission device P.

Reference numeral 42 denotes four rib members extending from the four corners of the raised top of the coarse filter frame 26 toward the center along the lower surface of each of the four divided coarse filters 27;
Reference numeral 3 denotes four protrusions that respectively protrude upward from the tip of each rib member 42 through the coarse filter 27, and are located on the same circumference centered on the shaft 33.

The rib member 42 and the protrusion 43 are connected to the coarse filter frame 2.
It is molded integrally with 6.

As shown in FIGS. 5 and 6, the coarse filter 27 is stretched over the coarse filter frame 26 so that the upper surface of the coarse filter 27 and the upper surface of the coarse filter 26 are aligned with each other. The bottom surface of and the coarse filter frame 26
The lower surface of the

Incidentally, since the upper surface of the coarse filter 27 and the upper surface of the coarse filter frame 26 substantially coincide with each other, this is convenient when dust on the coarse filter 27 is removed by a wiping member 45, which will be described later.

44 is a rotating member (actuator) fixed to the lower end of the shaft 33, and has a repelling portion 44a and a mounting arm portion 44b extending substantially horizontally at a distance from the upper surface of the coarse filter frame 26. .

The repelling portion 44a has elasticity and can engage with the four protrusions 43, and the repelling portion 44a has elasticity.
A constitutes a dust removal device for the coarse filter 27.

45 is an elastic wiping member whose upper end is fixed to the mounting arm 44b of the rotating member 44, and whose lower end is in contact with the upper surface of the coarse filter 27 stretched over the center portion of the coarse filter frame 26. There is.

The wiping member 45 is made of film-like rubber or soft synthetic resin material, and the lower end of the wiping member 45 is
A notch 46- is formed through which the protrusion 43 can pass when the rotating member 44 rotates.

Reference numeral 47 denotes a lid that opens and closes the opening of the dust container 3, and when the lid 47 is removed from the opening of the dust container 3,
The inside of the dust container 3 below the fine filter 28 is opened to the outside.

In the structure as described above, when the electric blower 9 is driven, air passes through the coarse filter 27 from the suction port 25, and then the fine filter 28 from outside to inside. Among the dust sucked through 30.10 and contained in the air, coarse particles are filtered by the coarse filter 27, fine particles are filtered by the fine filter 28, and the dust is collected in the dust container 3. be done.

The air sucked into the electric blower 9 is discharged from its exhaust port 9b, passes through the sound absorbing tube 11, and then enters the air exhaust passage 1.
4 and silencing chamber 8, and is dispersed and discharged to the outside from the exhaust port 13a of the exhaust cover 13.

When the electric blower 9 is operated, the noise generated in the electric blower 9 portion is blocked by the cord winding device 15 installed in the cord winding chamber 6, and the noise leaking outside the vacuum cleaner frame 1 is reduced.

Further, since the exhaust air flow of the electric blower 9 flows through the air exhaust passage 14 provided along the bottom of the main frame 2, the noise contained in the exhaust passage flow is difficult to reach the ears of the worker. , the overall noise when the vacuum cleaner is running is reduced.

When the cord is pulled out from the cord outlet 16, the cord winding device 15 rotates. , the fifth gear 41, the fourth gear 39, the internal gear 38, and the third gear 37, the signal is transmitted to the shaft 33, and the shaft 33 rotates.

As the shaft 33 rotates, the dust removal device 32 removes dust from the fine filter 28 .

When pulling out the cord, the shaft 33 rotates clockwise in FIG. 3.

When the shaft 33 rotates clockwise, the dust remover 36 penetrates relatively deeply between the folds of the fine filter 28, so that the fine filter 28 is vibrated relatively strongly.

Further, as the shaft 33 rotates, the rotating member 44 rotates, and the four protrusions 43 are sequentially repelled by the repelling portion 44a of the rotating member 44, thereby causing the coarse filter 27 to vibrate and become attached to the coarse filter 27. As the dust is brushed off downward, the fine dust that has been brushed off from the fine filter 28 by the dust device 32 and accumulated on the center portion of the coarse filter frame 26 is brushed off onto the stepped portion 26a of the coarse filter frame 26 by the wiping member 45. be dropped.

At this time, since the protrusion 43 is integrally formed to protrude from the tip of the rib member 42 extending along the lower surface of the coarse filter 27, when the protrusion 43 is repelled by the repelling portion 44a of the rotating member 44, the elasticity of the rib member 42 This causes the coarse filter 27 to vibrate violently, and the vibration causes the coarse filter 27 to vibrate violently.
The dust is transmitted well to the entire surface, and the dust adhering to the coarse filter 27 can be efficiently brushed off.

Furthermore, since the wiping member 45 is formed with a notch 46,
When the rotating member 44 rotates, the protrusion 43 passes through the notch 46, and the protrusion 43 does not become an obstacle to the wiping member 45.
I feel good.

Further, as shown in FIG. 6, since the outer diameter A of the recessed portion of the fine filter 26 is set approximately equal to the width B of the central protrusion of the coarse filter frame 26, the fine filter 28
The dust brushed off from the coarse filter 2 near the shaft 33
The coarse filter 27 does not fall onto the shaft 33 and is separated from the shaft 33.
The dust that has fallen upward is quickly wiped off onto the stepped portion 26a of the coarse filter frame 26 by the wiping member 45.

When the braking device is released, the cord winding device 15 rotates by the action of the mainspring spring, and the cord that has been pulled out of the vacuum cleaner frame 1 is wound and stored on the cord winding device 15.

At this time, as the cord winding device 15 rotates, the shaft 33 rotates counterclockwise in FIG. 3, and as the shaft 33 rotates, the dust removal device 32 removes dust from the fine filter 28.

When the shaft 33 rotates counterclockwise, the dust remover 36 penetrates into each fold of the fine filter 28 relatively shallowly.
The vibration of the fine filter 28 is weaker than when the shaft 33 rotates clockwise.

Further, as the shaft 33 rotates, the protrusion 43 of the rotating member 44 is repelled by the rotating part repelling part 44a, and the coarse filter 2
4 is performed, and the dust accumulated on the coarse filter 27 is brushed off by the wiping member 45 onto the stepped portion 26a of the coarse filter frame 26.

In this embodiment, the cord is wound in the cord winding device 1.
5, the shaft 33 rotates counterclockwise in FIG.
2, all the cords can be smoothly wound and stored on the cord winding device 15.

Another embodiment is shown in FIG.

In the embodiment shown in FIG. 8, a rotary member 44 is rotatably attached to the coarse filter frame 26, and a rotary member 44 is rotatably attached to the lower end of the shaft 33.
An engaging protrusion (actuator) 51 is provided that can be engaged with a protrusion 50 that protrudes upward from the middle portion of the repelling portion 44a of the rotating member 44.

In the embodiment described above, the rotating member 4 is attached to the lower end of the shaft 33.
4 is fixed, it is necessary to keep the spacing between the coarse filter 27 and the fine filter 28 constant at all times during manufacturing, but in the case of the embodiment shown in FIG. 4, some error is allowed.

In any of the embodiments described above, the fine filter 28
The problem lies in the positional relationship between the dust remover 36 and the wiping member 45, which constitute the dust remover 32. Ideally, the dust removed from the fine filter 28 by the dust remover 36 and falling onto the coarse filter 27 should be removed. It is desirable that the wiping member 45 be positioned somewhat later than the dust remover 36 in the rotating direction of the shaft 33 so that the wiping member 45 can immediately wipe away the dust. However, in each of the embodiments described above, the shaft 33 Since it rotates in both directions, the dust remover 36 and the wiping member 45 are positioned 180 degrees apart.

In the embodiment shown in FIG. 8, since the rotating member 44 is provided on the coarse filter frame 26, the engaging protrusion 51 is made to protrude in the same direction as the dust remover 36, and the engaging protrusion 51 is made to protrude from the repelling portion 44a side of the rotating member 44. By providing the child 50 in a protruding manner, the dust remover 36 and the wiping member 45 are designed to always move 180 degrees apart from each other.

As described in detail above, this device is equipped with a dust removal rotary shaft between each of the coarse and fine filters, which has an actuator for removing dust from the coarse filter and a dust remover for removing dust from the fine filter. In particular, for vacuum cleaners, each open end of the coarse filter protrudes radially across the axis in a plane orthogonal to the axis of the shaft, on the side opposite to the end of the shaft. A plurality of elongated fragments connected by a frame member, several coarse filter portions arranged along the plane on the inside surrounded by each of the fragments and the frame member on the outer periphery, and each of the coarse filter portions has a proximal end. A frame member is fixed to the surface of the frame member opposite to the axis, and has an open end that protrudes along each of the coarse filter parts to approximately the center thereof, and that extends through the coarse filter part at each of the open ends. It is provided with the same number of rib members as the coarse filter part provided with projections that can be engaged with the actuator.

Therefore, by rotating the shaft, the actuator can uniformly repel the entire surface of the coarse filter, especially the surface facing the shaft, and the number of times the actuator can repel each of the several coarse filter sections. This allows the entire coarse filter to be sufficiently vibrated to reliably remove adhering dust to every corner of the coarse filter.

[Brief explanation of drawings]

Figure 1 is a side sectional view of the vacuum cleaner of this invention, Figure 2 is a sectional view taken along line 2-2 in Figure 1, Figure 3 is a sectional view taken along line 3-3 in Figure 1, and Figure 4 is a sectional view taken along line 3-3 in Figure 1. 1 is a sectional view taken along line 4-4, FIG. 5 is an enlarged sectional view taken along line 5-5 in FIG. 4, FIG. 6 is a sectional view taken along line 6-6 in FIG. A sectional view taken along the line -7 and FIG. 8 are drawings showing another embodiment, and are sectional views of essential parts of the dust container showing only the vicinity of the coarse filter and the fine filter. In the figure, 26 is a coarse filter frame, 27 is a coarse filter, 28 is a fine filter, 33 is a shaft, 36 is a dust remover, 4
2 is a rib member, 43 is a protrusion, 44 is a rotating member for forming an actuator, and 51 is an engaging protrusion for forming an actuator.

Claims (1)

[Claims for Utility Model Registration] A shaft is provided between the coarse filter and the fine filter, protruding from the fine filter side toward the coarse filter side, and rotated by an appropriate drive source, and in the middle of the shaft, In the vacuum cleaner, a dust remover is provided for repelling the fine filter by its rotation, and an actuator is provided at the end of the shaft for repelling the coarse filter by its rotation. a plurality of elongated frame pieces, on the side facing the end of the shaft, projecting radially across the axis in a plane orthogonal to the axis of the shaft, each open end of which is connected by a coarse filter frame; Several coarse filter parts are arranged parallel to the plane on the inside surrounded by each frame piece and the coarse filter frame on the outer periphery, and each base end is on the opposite side of the axis of the coarse filter frame. a protrusion fixed to the surface of the filter, the open end of which protrudes along each of the coarse filter parts to approximately the center thereof, and which is capable of penetrating the coarse filter part and engaging the actuator at each of the open ends; A vacuum cleaner comprising the same number of rib members as the coarse filter portion.