JPS6013696B2 - vacuum cleaner - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a vacuum cleaner in which a dust case connected to a main case is provided with a dust collection chamber, a coarse filter, a fine filter, etc. .

[Prior art]

Conventionally, as this type of vacuum cleaner, for example,
- As shown in Publication No. 18590, inside the dust case,
A container-shaped filter case with a coarse filter on a substantially vertical side is arranged with the entrance side facing the main case, and a fine filter is provided inside the filter case. The front surface is recessed in the shape of a dome, and a convex portion is provided in the center of the recess so as to face the hose connection pipe that competes with the suction port, so that the air sucked into the dust case from the hose connection pipe is Once applied to the convex part, the dust is scattered radially, and the coarse dust contained in the air is captured by the coarse filter and stored in the dust collection chamber, and the fine dust that has passed through the coarse filter is captured by the fine filter. You can see something like this.

As another example, as shown in Japanese Utility Model Publication No. 48-20445, an inlet is provided at the front end of the dust case, and vertical coarse filters and fine filters are installed inside and outside the case. In addition, a lid body is arranged obliquely at the entrance on the main case side of the dust case, and air is sucked into the dust case from the suction port to remove coarse dust contained in the air in the dust case. In addition to capturing the dust that has passed through the coarse filter, there are some that use a fine filter to capture the dust that has passed through the coarse filter. [Problem to be Solved by the Invention] However, according to the former subordinate technology, the convex portion provided at the center of the groove-shaped depression of the coarse filter prevents the air flow sucked from the hose connection pipe. Since the air that hits this convex part is radially scattered in all directions perpendicular to the air flow, it passes through the coarse filter along the surface of the container-shaped filter case. As a result of this flow, the dust sucked into the dust case is disturbed within the dust case, and a large amount of coarse dust is generated especially around the filter case in the early stages before it accumulates near the suction port. It has been pointed out that this causes the vertical hammer-like filter to become clogged at an early stage, and the dust suction efficiency decreases significantly even though there is sufficient bag dust space in the bonito case. It is pointed out that

Furthermore, according to the latter prior art, because there is no means such as an air guide pipe connected to the suction port in the primary dust collection chamber, the air discharge port portion of the suction port and the lid body are not connected to each other. Even though the central part of the air discharged from the suction port into the primary dust collection chamber hits the lid and is reflected diagonally downward, the outside air that is discharged spreads out before reaching the lid. (Due to the air flow path where the air sucked into the primary dust collection chamber passes through the coarse filter and exits, it spreads particularly to both the left and right ends where the coarse filter exists.) The airflow goes directly to the rear part of the coarse filter and passes through that part of the coarse filter at a very high speed.At this time, coarse dust is caught by the coarse filter, but as mentioned above, the speed of the airflow is Since the dust is very large, the dust is compressed and adheres to the coarse filter.It has been pointed out that this causes early clogging of the coarse filter and a decrease in dust suction efficiency. Furthermore, as mentioned above, the firmly adhered lees cannot be easily removed from the coarse filter when picking up bonito, so workers have to perform special labor-intensive work such as removing them by hand. [Purpose] This invention was made in response to the above-mentioned conventional achievements, and it provides a filter that prevents the filter from clogging even when used for a long time, and maintains strong dust suction power for a long time. It is an object of the present invention to provide a vacuum cleaner that can collect a large amount of dust.

〔Example〕

The details will be explained below with reference to FIGS. 3 to 3 showing examples.

In the figure, 2Q'ma is the main case that houses the electric blower.
22 is a cord winding device housed inside the main case 28, and 23 is a dust case that is separably attached to the front of the main case 28 and opens on the side of the main case 28. .

The panel 4 has a suction port "
The coarse filter frame is placed approximately horizontally inside the dust case lacquer 8 and has an unusual U-shaped cross section.26
'The filter T275 is a fine filter made of bran paper folded into a chrysanthemum shape in cross section, and its bag line is vertical. It is stored in the dust case 23 in such a manner that it becomes .

28 thick fine filter frames are provided at the upper and lower ends of the fine filter. Therefore, the fine filter 27 is fixed in the dust case 23 via the upper fine filter frame 28.

Further, the lower end entrance portion of the fine filter 27 is closed by the fine filter frame 28' provided below the fine filter 27. The fine filter 27 has a through hole S formed on its side. Through the through hole S, the inside of the filter is communicated with the two electric blowers. This is a dust removal device for the texture filter 27 during the cod season.

381 is the rotating shaft of the dust removal layer 29, and 31 is the rotating shaft 3Q! This dust remover has a fixed base end, and its free end penetrates into the hair of the fine filter 27. The cord winding device 22 is connected to the three rotating shafts via the power transmission mechanism P.
When the cord winding device 22 rotates as the cord is pulled out or stored, the dust remover 3 removes the hair of the fine filter 271 one by one, and the fine filter 271 is attached. The bonito dust is brushed downward. Reference numeral 32 denotes a protrusion projecting upward from the coarse filter 26; 33 a rotating member fixed to the lower end of the rotating shaft 30; a repelling portion 33 having elasticity capable of repelling the protrusion 32;
a and a mounting arm portion 33b.

Reference numeral 34 denotes a wiping member fixed to the upper end of the mounting arm 33M, and is made of a film-like rubber or abrasive synthetic resin, and its lower end is in contact with the upper surface of the coarse filter 26.

Therefore, when the rotating shaft 30 rotates, the repelling portion 33a of the rotating member repels the protrusion 32, causing the coarse filter 26 to vibrate, thereby blowing off the dust attached to the coarse filter 26 downward. At the same time, the ink dust that fell from the fine filter 27 and accumulated on the coarse filter 26 is removed by the wiping section 3.
4 onto the bottom surface of the dust case 23 outside the coarse filter frame 25. 35 is a primary dust collection chamber defined below the coarse filter frame 25, and 36 is a secondary dust collection chamber defined between the coarse filter frame 25 and the upper fine filter frame 28. , primary and secondary dust collection chamber 3
5 and 36 are connected to the entrance part of the dust case 23.

Reference numeral 37 denotes a lid body that opens and closes the closed portions of the primary and secondary dust collection chambers 35 and 36, and its upper end is attached to the rear surface of the dust case 23 by a pin 37a.

38 is a knob formed on the back surface of the diamond body 37; 39 is an auxiliary filter frame that covers the frontage of the primary dust collection chamber 36 in an openable/closable manner; In addition, an auxiliary filter 40 having approximately the same coarseness as the coarse filter 26 is stretched flat so as to be aligned on the same plane.

The auxiliary filter frame 39 has an air-impermeable portion 39a integrally formed on the front surface of the auxiliary filter frame 39 facing the suction port 24, and is disposed at a distance from the diamond body 37. The auxiliary filter frame 39 is fixed to the upright portion of the central protrusion of the coarse filter frame 25 by shafts that project horizontally from both left and right sides of its upper end. A projection 41 extends from the front surface of the lid body 37 toward the auxiliary filter frame 39, and is in contact with the back surface of the auxiliary filter frame 39 when the lid is closed.

42 is a substantially horizontal line immediately below the lower surface of the upper horizontal coarse filter 26 from the suction port 24 to the auxiliary filter 40' to approximately the middle of the front and back of the primary dust collection chamber 35. It is an elongated air guide cylinder, and its base end communicates with the suction port 24, and its distal end opens toward the impermeable part 39a of the auxiliary filter frame 39.

The space between the lid 37 and the auxiliary filter frame 39 is suitable for connecting the electric blower 21 with the coarse filter 26 in between. Then, part of the air that is sucked in from the suction port 24 and flows into the dust case 23 through the long air guide tube 42 flows directly toward the coarse filter 26, but most of the air is lost due to inertia. The air travels almost straight and violently collides with the impermeable part 39a of the auxiliary filter frame 39, and the air is reflected by the impermeable part 39a and reaches the bottom of the primary dust collection chamber 35 on the lower side of the air guide cylinder base 2. A part of the air passes through the auxiliary filter as it returns to the suction port 24 side, and then passes through the space between the auxiliary filter 40 and the lid 37 and the coarse filter 26 to reach the fine filter 27.

The coarse dust contained in the air that has passed through the auxiliary filter 40 is collected by the auxiliary filter 401. When the air passes through the auxiliary filter 40 and passes through the coarse filter 26, coarse dust has already been removed from the auxiliary filter 4, so the dust removed by the coarse filter 26 is rare. However, since the air passing through the auxiliary filter 40 has a high flow rate, there is a possibility that some coarse dust may pass through the auxiliary filter 40. The air passes through the coarse filter 26 and is accumulated in the air between the lid 37 and the auxiliary filter frame 39. On the other hand, the impermeable part 3 of the auxiliary filter frame 39
Since the auxiliary filter frame is provided with a mirror slant, the airflow reflected by the auxiliary filter 9a is slowed down while releasing the dust that has been neglected by the auxiliary filter 40 from the auxiliary filter 0. The dust that has passed through the auxiliary filter is further released from the air flow and flows toward the lower side of the suction port 24 of the primary dust collection chamber 35 due to the airflow phenomenon. Coarse dust that is accumulated in the lower part from the suction port side and that is still included in the intake air flow is passed through the coarse filter 26 and sent to the primary dust collection chamber 35.
accumulated within. At this time, the flow rate of the air passing through the coarse filter 26 is very slow because it is once radiated by the auxiliary filter 40 and the lid 37, and the air flow rate of the coarse filter 26 is very slow due to the dust that has passed through the filter. This makes it difficult for dust to adhere to the coarse filter 26 and cause it to become thick. In addition, because the airflow velocity is relatively slow, the moated dust is relatively difficult to compress, and a good porous filter effect is created on the dust.
The coarser filter 26 is less likely to become clogged. In this manner, in this embodiment, the auxiliary filter 40 is cleaned by the air flow reflected by the auxiliary filter 40 and the rhomboid 37, so that no dust is attached to the auxiliary filter 401, and Since the mesh of the coarse filter 26 is not easily clogged, good suction power can be maintained for a long period of time. Furthermore, since air is sucked into the bonito case 23 through the air guide cylinder 42, the dust accumulated in the bonito case 23 is not violently disturbed by the air flow flowing in from the suction port 24. A large amount of bonito dust is accumulated daily from the intake port 24 side of the bonito case 23, and a large amount of bonito dust can be stored in the dust case 23.The airflow that has reached the fine filter 27 flows through the fine filter 27 from the outside to the inside. After passing through the air hole S, the fine dust contained in the intake air flow is filtered out by the fine filter 27 and sent to the secondary dust collection chamber 36. accumulated within.

When the knob 38 is picked up with fingers and the lid body 37 is rotated around the plum branch 37a, and the auxiliary filter frame 39 is rotated around the pivot branch 39a, the primary and secondary dust collection chambers 35, 36 is opened, and the dust accumulated in the primary and secondary dust collection chambers 35, 36 and between the lid body 37 and the auxiliary filter frame 39 can be easily thrown away from the closed part.

(See Figure 3). When the auxiliary filter frame 39 is rotated clockwise in FIG.
3 and covers the entrance side of the primary dust collection chamber 35 by contacting a stopper protruding from the inner bottom surface of the dust collection chamber 35.

After that, the lid body 37 is moved to the third position around the pivot portion 37a.
When rotated clockwise in the figure, the entrance of the dust case 23 is closed, and the distance between the lid 37 and the auxiliary filter frame 39 is maintained by the protrusion 41. [Efficacy
[Effect] Since the present invention is configured as detailed above, the meshes of the coarse filter 26 and the auxiliary filter 40 are not easily clogged with dust, and can exert strong suction power over a long period of time. In particular, dust case 2
In the primary dust collection chamber 35 of No. 3, from the suction port 24 directly below the lower surface of the upper horizontal coarse filter 26 toward the auxiliary filter 40, the front and back of the primary dust collection chamber 35 An air guide cylinder 42 extending horizontally to approximately the middle part is provided, and the auxiliary filter 40 is formed in a flat shape and is inclined so as to move away from the suction port 2 as it goes downward. Since the impermeable part 39a is formed in the part facing the air guide tube 42, the dust accumulated in the bonito case 23 is not severely disturbed by the air flow flowing in from the suction port 24. Air flowing in from the tube 42 and reflected by the impermeable portion 39a flows into the air guide tube 4.
The dust contained in this airflow moves diagonally downward toward the bottom of the primary dust collection chamber 35 below the primary dust collection chamber 3.
Since the incoming air can be discharged upward by the horizontal coarse filter 26 above, a large amount of dust cannot be accumulated in the dust collection chamber. I can do it.

Moreover, the impermeable part 39a of the auxiliary filter 40 and the lid body 37
The flow velocity of the air reflected by the filter and passing through the coarse filter 26 is very slow, so the coarse filter 26 becomes clogged.
As the dust adheres to the coarse filter 26 and becomes thick, the compressed dust is relatively difficult to compress, and a good porous filter effect is created on the dust, making the coarse filter 26 even more dense. It has many excellent effects such as preventing the eyes from becoming clogged.

[Brief explanation of the drawing]

Figure 1 is a sectional view of a vacuum cleaner implemented with this invention, Figure 2
The figure is a sectional view taken along line 2-2 in FIG. 1, and FIG. 3 is a sectional view of the dust case with the lid and auxiliary filter frame open. 20. ...Main case, 23...Dust case,
24... Inlet, 26... Coarse filter, 27
...Fine filter, 35...Primary dust collection room, 3
7... Lid body, 39a... Impermeable part, 40
...Auxiliary Philharmonic evening. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1 A suction port 24 is provided in a dust case 23 that opens approximately horizontally on the side of the main case 20 in which the electric blower 21 is housed, facing the opening, and a coarse filter 26 is installed approximately horizontally within the dust case 23. and is arranged vertically so that one end is connected to the inlet 24.
A primary dust collection chamber 3 extends substantially horizontally within the dust case 23 so as to communicate with the dust case 23 and open the other end to the opening of the dust case 23.
A fine filter 27 is disposed on the leeward side of the coarse filter 26, and a lid 37 that can open and close the opening of the dust case 23 is provided substantially vertically and faces the suction port 24. At the same time, a flat-shaped auxiliary filter 40 that can open and close the opening of the primary dust collection chamber 35 and has approximately the same mesh size as the coarse filter 26 is installed at a distance from the lid body 37 to cover the primary dust collection chamber 35 . The electric blower 21 is placed in the dust collection chamber 35, and the space between the auxiliary filter 40 and the lid 37 is communicated with the electric blower 21 through the coarse and fine filters 26, 27. Inside the dust collection chamber 35, from the suction port 24 to the auxiliary filter 40, just below the lower surface of the upper horizontal coarse filter 26, is approximately the middle part of the primary dust collection chamber 35. A horizontally extended air guide tube 42 is provided to protrude from the auxiliary filter 40.
The vacuum cleaner is characterized in that the auxiliary filter 40 is arranged to be inclined so as to move away from the suction port 24 as it goes downward, and an impermeable part 39a is formed in a portion of the auxiliary filter 40 that faces the air guide tube 42. .