KR100276505B1 - Air cleaner - Google Patents

Abstract

The dust collecting sheet 20 is drawn out from the dust collecting sheet roll 20a on the rotating feed table 10 to the outside of the dust collecting wall 3 through the opening 3a of the dust collecting wall 3 and winds around the dust collecting wall outer periphery. It returns to the inside of the dust collecting wall 3 again through the opening 3a, and winds around the winding core of the winding table 12. Then, as shown in FIG. The supply table 10 and the winding table 12 are provided with the pulley A and the pulley B, These pulleys are connected by the belt 18. As shown in FIG. By rotating the take-up table side, the feed table 10 is rotated by a drive system composed of pulleys and a belt, and the dust collecting sheet 20 is smoothly taken out.

Description

air cleaner

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier, and more particularly, to an air purifier in which particles such as dust are ionized to attach ionized particles onto a dust collector disposed so as to cover the dust collecting electrode.

An air purifier that collects dust in the air and cleans the air in the room, the so-called electrostatic device having an ionizing electrode for ionizing dust particles in the air and a dust collecting electrode for collecting the ionized particles and adsorbing them on the dust collecting site. Type air cleaners are known. 1 and 2 show an example of a conventional electrostatic air cleaner. The electrostatic air cleaner 100 has a base member 101 and a cylindrical dust collecting wall 102. The base member 101 has a needle-shaped ionization electrode 103 and a dust collecting wall 102. Two band-shaped dust collecting electrodes 104 and 105 are provided on the outer surface of the substrate.

Inside the dust collecting wall 102, a shaft 106 rotatably supporting the supply reel 108 for holding the dust collecting paper 110 and a shaft for rotatably supporting the reel 109 for winding ( 107). As the dust collecting paper 110, a conventional roll-shaped toilet paper can be used, and the roll-shaped dust collecting paper 110 is mounted on the supply reel 108 so that one end thereof has an opening ( It is withdrawn from the 111 and is returned to the outside of the dust collecting wall 105 again through the opening 111 to the inside of the dust collecting wall and caught by the reel 109 for winding. In the above configuration, when a negative high voltage is applied to the ionization electrodes 103 and a positive high voltage is applied to the dust collecting electrodes 104 and 105, negative ions are generated by discharge in the vicinity of the ionization electrodes 103, which collide with dust or the like, The dust carries negative electricity and is attracted and collected by the dust collecting electrodes 104 and 105 of the anode. Dust attracted by the dust collecting electrodes 104 and 105 is attached to and collected by the dust collecting paper 110 mounted on the upper surface thereof.

The dust collecting paper 110 that is dusty and dirty is wound by the reel 109 for winding as appropriate, and the dust collecting paper 110 is unwound from the supply reel 108.

By the way, in the air purifier to which the above roll-shaped dust collector is mounted and used, the dust collector 110 is wound with the passage of use, and the dust collector is rotated by turning the reel 109 for winding. 110 is wound, so that the dust collector 110 of the reel 108 for supply is pulled out to be released. Although the reels 108 and 109 are free to rotate, when the dust collecting paper 110 is wound, tension may be applied to the dust collecting paper 110 wound around the dust collecting wall 102. In particular, in the initial stage of the start of the use of the roll-shaped dust collecting paper 110, since the mass of the dust collecting paper 110 held by the supply reel 108 is large, greater tension is likely to be caught and torn. In addition, a method of supporting the dust collecting paper 110 on the supply side on the rotary table and reducing the tension applied to the dust collecting paper at the time of winding may be considered. In this case, the reel for supply rotated by the winding operation may not be rotated. Due to the moment of inertia, the dust collector can be removed more than necessary. When the dust collecting place more than necessary is released, the dust collecting place 110 located on the dust collecting wall 102 is relaxed, and the dust collecting place 110 does not come into close contact with the dust collecting electrodes 104 and 105, and dust and dust are efficiently collected. You will not be able to. In addition, when the dirty dust collector is wound on the reel 109 side for winding up, the dirty dust collector may come into contact with and become dirty.

The present invention has been made to solve the above problems, in an air purifier using a wound dust collecting, to provide an air purifier having a winding and supply means of the dust collecting dust can be smoothly withdrawn the collected dust collecting The purpose is.

1 is a front view of a conventional air cleaner.

2 is a plan view of the air cleaner shown in FIG.

3 is a cross-sectional structure diagram of an air cleaner according to an embodiment of the present invention.

4 is a view showing an air cleaner in a state where the cover unit is removed.

5 shows a feed table and a take-up table.

FIG. 6 is a view showing a first embodiment of the present invention, in which (a) is a case where the diameter of the sheet roll on the supply side is maximum, and (b) is a view when it is minimum.

7 is a view showing a second embodiment of the present invention.

8 is a view showing a third embodiment of the present invention.

9 is a view showing a fourth embodiment of the present invention.

10 is a view showing an air cleaner according to a fifth embodiment of the present invention, showing a state in which the cover unit is removed.

11 is an exploded explanatory view of a drive mechanism of a supply table;

12 is a diagram for explaining a state of a drive mechanism of a supply table when using an air cleaner.

13 is a view for explaining the operating state of the drive mechanism of the feed table when the dust collecting sheet is wound.

<Description of the code | symbol about the principal part of drawing>

1, 30, 40, 50, 60 ... air purifier 2 ... base

3 ... dust collecting wall 3a ... opening

4 ... Ionizing electrode 5 ... Crushing electrode

6.Cover unit 7 ... Support shaft

8 support rod 10 supply table

11 Roll support 12 Winding table

13 ... Recommended 14 ... Top

15.Control panel 16 ... Roller

17 ... tension roller 20 ... dust collection sheet

20a ... Seat Roll 80 ... Tension Arm

90.

The said subject is solved by the following structures of this invention.

The present invention is connected to a supply table on which a dust collecting sheet for attaching dust suspended in air is wound, a winding table for winding a dust collecting sheet drawn out from the supply table, the supply table and the winding table, It was set as the structure which consists of drive means which rotationally drives the said supply table as a winding table rotates. As a result, by rotating the take-up table, the feed table is rotated in conjunction with this, and the take-out sheet can be smoothly pulled out without excessive load being applied.

Further, in the air cleaner, the driving means comprises a supply pulley provided on a supply table, a winding pulley provided on a winding table, a belt connecting the supply pulley and the winding pulley, and the diameter of the supply pulley and the winding pulley. The ratio is set so that the length of the dust collecting sheet supplied by the feed table is always shorter than the length of the dust collecting sheet wound by the winding table, so that when the dust collecting sheet is withdrawn, an appropriate tension is always applied to the dust collecting sheet. , The dust collecting sheet can be smoothly withdrawn without being relaxed, and the above problems can be solved more effectively.

Moreover, the said subject can also be solved by employ | adopting the following other means of this invention.

That is, the air cleaner includes a supply table on which a dust collecting sheet for attaching dust suspended in air, a winding table on which a dust collecting sheet drawn out from the supply table is wound, and a dust collecting sheet wound on the winding table from the supply table. It was set as the structure which consists of a drive means which detects that the tension rose and rotates the said supply table. According to this configuration, when the tension of the dust collecting sheet rises, the feeding table can be rotated. Therefore, excessive tension is applied to the dust collecting sheet when the dust collecting sheet is wound, and tearing of the dust collecting sheet is prevented.

Further, in the air cleaner, the drive means has a contact portion in contact with the dust collecting sheet wound on the winding table in the supply table, the contact portion is displaced in accordance with the increase in tension of the dust collecting sheet, and this displacement is used as a driving force. To rotate the feed table. In this way, the contact portion in contact with the dust collecting sheet is displaced according to the tension of the dust collecting sheet, and the feed table is rotated using the displacement as a driving force. Therefore, the increase in tension can be used as the driving force of the supply table, which is advantageous in reducing the cost of the driving means.

In addition, in the present invention, the following means can be adopted.

That is, the air cleaner detects the start of winding of the dust collecting sheet by the winding table, a supply table on which a dust collecting sheet for attaching dust floating in the air, a winding table which winds up the dust collecting sheet drawn out from the supply table, and the winding table. The supply table was constituted of drive means for rotating the predetermined amount in the direction in which the dust collecting sheet was taken out.

According to this structure, at the time of winding start where a large tension is applied to the dust collecting sheet, the feed table is driven to rotate in the direction in which the dust collecting sheet is taken out. As a result, a large tension applied to the dust collecting sheet when the dust collecting sheet is wound is alleviated, and the dust collecting sheet is prevented from being torn.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

A first embodiment of the present invention will be described with reference to FIGS. 3 to 6.

3 is a view showing the main structure of the cross section of the air cleaner according to the present embodiment, and FIG. 4 is a perspective view showing a state in which the cover unit of the air cleaner is removed and a dust collecting sheet roll is mounted. The air cleaner 1 has a base 2 made of an insulating material and a cylindrical dust collecting wall 3 formed integrally therewith. The base 2 is coupled with an annular ionization electrode 4 having a plurality of sharp projections 4a. Moreover, the dust collection electrode 5 which consists of three annular strip | belt-shaped electrodes 5a, 5b, 5c is provided in the outer surface of the dust collecting wall 3. In addition, negative high voltages are applied to the ionization electrodes 4, and positive high voltages are added to the dust collecting electrodes 5a, 5b, and 5c, respectively, as they move away from the ionization electrodes 4, respectively. .

Inside the dust collecting wall 3, a rotatable feed table 10 having a roll support portion 11 for holding a sheet roll 20a of a dust collecting sheet (hereinafter referred to as a 'sheet') and a sheet ( A rotatable winding table 12 having a winding core 13 for winding and holding 20 is arranged at predetermined intervals. An upper plate 14 having an operation unit 15 is mounted on an upper portion of the winding core 13 of the winding table, and the winding core 13 can be rotated as the upper plate 14 is rotated. A part of the dust collecting wall 3 is formed with a longitudinal opening 3a which is used to draw out the sheet 20 to the outside and to draw the inside thereof, and the dust collecting wall 3 is formed at both sides of the opening 3a. The two rollers 16 and 17 which guide a sheet | seat inside of () are provided.

The air cleaner 1 has a detachable cover unit 6 and is covered with the cover unit 6 so that the ionization electrode 4 and the dust collecting electrode 5 are not exposed to the outside. The cover unit 6 is formed with slit-shaped openings 6a and 6b through which air flows in and out. The cover unit 6 further includes a support shaft 7 inserted into the core portion of the sheet roll 20a held by the supply table 10 at the top thereof to support the sheet roll 20a from above. The support rod 8 for pressing the upper plate of the core 13 is formed.

At the time of use of the air cleaner 1, a sheet suitable for dust collection, for example, a sheet roll 20a such as a roll-type toilet paper, is roll-supported on the supply table 10 at a central cavity thereof. ) To insert. And the sheet end part of the sheet roll 2a is taken out, and as shown in FIG. 4, it collects from the opening 3a via the roller 16 located in the vicinity of the opening 3a formed in a part of the dust collecting wall 3 It winds around the outer periphery of the wall 3, pulls it in the inside of the dust collecting wall 3 again from the opening 3a, and engages with the winding core 13 on the winding table via the roller 17. As shown in FIG. Then, when a predetermined amount of dust adheres to the surface of the sheet 20 wound around the outer periphery of the dust collecting wall 3 according to the use of the air cleaner 1, the core 13 is operated by the upper operation part 15. And the sheet 20 is taken out from the sheet roll 20a by a predetermined amount and used.

Next, the drive system of the supply table 10 and the take-up table 12 which are the characteristics of this invention is demonstrated with reference to FIG. 5 and FIG. The supply table 10 of the air cleaner 1 according to the present embodiment has a pulley A provided integrally thereunder. Moreover, similarly, the winding table 12 has the winding support part 12a which supports the winding core 13, and the pulley B below. Then, the belt 18 is caught between the pulley A and the pulley B, whereby the rotation of the winding table 12 is transmitted to the pulley A of the supply table 10 by the belt 18. The feed table 10 rotates in association with the rotation of the take-up table 10.

Here, the setting of the ratio of the diameter of the pulley A of the supply table 10 and the pulley B of the winding table 12 is demonstrated. The diameter of the pulley A is D1, the diameter of the pulley B is D2, the maximum diameter of the dust collecting sheet roll 20a is d1, and the diameter of the core 13 is d2.

Now, if D1 / D2 = d1 / d2 is set, the supply table 10 rotates D2 / D1 times per one rotation of the take-up table 12. As shown in Fig. 6A, in the state where the sheet roll 20a is the maximum diameter, the rotation of the feed table 10 is performed by the length wound around the winding core 13 having a diameter d2 by the rotation of the winding table 12. Will continue to be exported. In this manner, when the diameter of the dust collecting sheet roll 20a is the maximum, that is, in the initial stage in which the sheet roll 20a is mounted, the length of the dust collecting sheet roll 20a is matched to the length wound on the winding core 13 by the rotation of the winding table 12. The intermediate dust sheet 20, which is unwound from the supply table 10 by the amount, and wound around the outer circumference of the dust collecting wall 3, is not subjected to excessive tension and is not torn. However, in the initial stage in which the sheet roll 20a is mounted, since the mass of the sheet roll 20a on the feed table 10 is large, even when the rotated feed table 10 is stopped, an inertia moment acts. Extra rotation occurs to cause loosening of the dust collecting sheet 20 more than necessary, and the dust collecting sheet 20 on the dust collecting wall 3 may relax.

On the other hand, as the amount wound around the core 13 increases, and as the diameter of the wound sheet 20 increases, the length wound by one rotation of the core 13 is rotated by the pulley A. It becomes longer than the length sent out by the rotation of the feed table 10. This means that the sheet roll 20a supported on the feed table 10 slides on the feed table 10. In this case, a predetermined tension is applied to the sheet 20, but the mass of the sheet roll 20a on the supply table 10 side becomes small, and the tension applied to the sheet 20 on the way is small.

In the present embodiment, the pulley ratio is set so that the sheet 20 can be wound around without being subjected to excessive tension. Hereinafter, the set pulley ratio is demonstrated. In this embodiment, the ratio D1 / D2 of the pulley (A) and the pulley (B),

D1 / D2 = (Supply side maximum diameter d1 / winding side minimum diameter d2) x (Slip amount factor k)

This slip amount coefficient k was introduced, and 1.1 was adopted as the specific example.

Now, supply side maximum diameter = maximum diameter d1 = 105 mm of the sheet roll 20a,

Winding side minimum diameter = diameter of winding core d2 = 39 mm,

Slip coefficient k = 1.1

,

Pulley ratio D1 / D2 = (105/39) × 1.1

≒ 2.96

As described above, by introducing the slip amount coefficient k, the length of the sheet supplied by the supply side is always shorter than the length of the sheet rolled up by the winding side, thereby preventing the sheet from loosening.

That is, in the roll start stage of the sheet roll, the sheet roll 20a is the largest diameter d1, and the friction between the bottom surface of the sheet roll 20a and the surface of the feed table 10 is large, and the sheet 20 is the most. It's time to tear.

In this embodiment, for example, when the winding table 12 rotates the sheet 20 by 11 cm, by the pulley ratio, the supply table 10 rotates by 10 cm of the sheet 20. The sheet roll 20a is rotated by supplying 1 cm to the supply table 10. As such, in the winding start stage, most of the dust collecting sheet 20 to be supplied is supplied by the rotation of the supply table 10, the rotation of the sheet roll 20a with respect to the supply table 10 is slight, and the sheet 20 ), But moderate tension is applied, but no excessive load is applied. Therefore, the sheet does not relax and does not tear.

On the other hand, in the step of winding the sheet roll, as shown in Fig. 6B, the diameter of the sheet roll 20a of the supply table 10 is the minimum d1 'and the bottom surface of the sheet roll 20a. And the friction between the surface of the feed table 10 is small. When the winding table 12 rotates the sheet 20 by 11 cm, the feeding table 10 rotates by feeding the sheet, for example, about 1.5 cm, and the sheet roll 20a moves the feeding table 10. Rotate the sheet by 9.5 cm. In this way, the acceleration in which the sheet roll 20a rotates with respect to the feed table 10 becomes larger than the start of the winding of the sheet roll, but the load applied to the sheet 20 because the sheet roll 20a on the feed table 10 is light. Is small, and the sheet does not tear. In addition, since the sheet to be fed is made by the rotation with respect to the feeding table 10, the sheet is always appropriately tensioned and does not relax on the dust collecting wall 3.

As described above, in the present embodiment, at the time of winding up the collecting sheet, the operation part 115 of the upper portion of the winding table 12 is rotated and wound up, but the rotation of the winding table 12 is pulled (B), The feed table 10 is rotated via the belt 18 and the pulley A, and the feed table 10 is rotated, thereby releasing the sheet from the sheet roll 20a supported by the feed table 10. This is done smoothly.

In addition, since a pair of rollers for guiding the sheet is provided in the vicinity of the opening 3a for drawing out the dust collecting sheet provided inside the dust collecting wall 3 to the outer periphery of the dust collecting wall 3, Unwinding becomes smooth and the load on a sheet can be made small. Therefore, excessive load is not applied to the sheet, and no tearing occurs. Further, by setting the pulley ratio so that the length of the sheet supplied by the supply side is always shorter than the length of the sheet on which the winding side is wound, the sheet is prevented from loosening, and the sheet is collected at the dust collecting electrode 5 of the dust collecting wall 3. ) Good adhesion, resulting in high dust collection effect.

Furthermore, since the dust collecting sheet can be wound only by operating the operation unit on the winding table, the hand can be soiled. In addition, although the slip amount coefficient k is set to k = 1.10 in this embodiment, it is not specifically limited, 1.05-1.30 is considered to be a suitable range.

7 shows an air cleaner of the second embodiment of the present invention. The air cleaner 30 of this embodiment has the same basic structure as that of the embodiment (first embodiment) shown in Figs. 3 to 6, and for convenience of explanation, only the different parts are replaced with the description.

In the air purifier 1 of the first embodiment, a pair of rollers 16, 17 for drawing the dust collecting sheet to the outer periphery of the dust collecting wall 3 and guiding the sheet in the vicinity of the opening 3a for returning the In this embodiment, the guides 31 and 32 having a small coefficient of friction are provided in place of the rollers 16 and 17.

The guides 31 and 32 serve as a low friction coefficient member to a part where the dust collecting sheet 20 on the surface of the guide posts 31a and 32a provided in the vicinity of the opening 3a is in contact with the dust collecting wall 3. It consists of binding Teflon. According to the present embodiment, the sheet 20 drawn out from the supply table 10 side to the take-up table 12 side and through the outer circumferential surface of the dust collecting wall 3 is formed by the pulley A, the pulley B and the belt. Together with the delivery mechanism, the low friction coefficient members 31b and 32b of the guides 31 and 32 can be smoothly pulled out to effectively reduce the load on the sheet.

8 shows an air cleaner of the third embodiment of the present invention. The air cleaner 40 according to the present embodiment also has a configuration basically similar to that of the first embodiment. For convenience of explanation, only the different parts will be replaced with the description.

In the air cleaner 40 of the present embodiment, the rollers 41 and 42 in which the pulleys C and the pulleys D are integrally provided in the vicinity of the opening portion 3a of the dust collecting wall 3 are provided with a pulley ( One belt 43 was fastened to A, B, C, and D). With this configuration, when the winding table 12 is rotated, the rotation is transmitted to the pulley A by the belt 43 and also to the rollers 41 and 42 for guiding the sheet 20. . The rotation of these rollers 41 and 42 assists conveyance of the sheet wound by the winding table 12, and the sheet is conveyed smoothly.

9 shows an air cleaner of the fourth embodiment of the present invention. Also in this embodiment, parts different from those of the air cleaner 1 of the first embodiment will be described with the same reference numerals.

The air cleaner 50 of this embodiment is provided with the pulleys E and F integrally attached to the supply table 10 and the take-up table 12 separately from the pulleys A and B, respectively. Doing. Moreover, the pulleys G and H are integrally provided to the rollers 51 and 52 provided in the vicinity of the opening 3a, respectively. Then, the pulley A of the feed table 10 and the pulley B of the take-up table 12 are fastened to the belt 18 as in the first embodiment, and the pulley E and the roller ( The belt 53 is fastened to the pulley G of the 51 and the belt 54 is fastened to the pulley F of the winding table 12 and the pulley H of the roller 52.

In the air cleaner 50 of the above structure, when the take-up table 12 is rotated, the supply table 10 is rotated by the belt 18. At the same time, the rotation of the feeding table 10 is transmitted to the roller 51 by the belt 53 to rotate it, and the rotation of the winding table 12 is transmitted to the belt 54 to rotate the roller 52. Let's do it. As a result, the sheet can be drawn out and wound smoothly.

In each of the above embodiments, a pulley that catches a belt is used as the driving means of the supply table, but it is clear that the driving means using the sprocket and the chain can also be employed.

According to each of the above embodiments, the dust collecting sheet can be taken out and wound smoothly from the sheet roll, and the sheet does not tear because the sheet is not excessively loaded in the process. In addition, the newly drawn sheet is not relaxed and is kept in close contact with the dust collecting electrode, thereby increasing the dust collecting effect. In addition, since the winding operation can be performed by operating the operation section on the winding table side, the hands are not dirty.

Next, the air cleaner according to the fifth embodiment of the present invention will be described with reference to FIGS. 10 to 13. In the description of the present embodiment, the same reference numerals are used for the same components as those of the air cleaner shown in FIGS. 3 and 4. FIG. 10 is a perspective view showing a state in which the cover unit of the air cleaner is removed and the dust collecting sheet roll is mounted. As in FIG. 4, the tension roller 17 is supported by the tension arm 80 as described later. Is different.

As shown in Fig. 11, the roll supporting portion 11 for supporting the sheet roll 20a of the dust collecting sheet (hereinafter referred to as a 'sheet') 20 inside the dust collecting wall 3, as in the respective embodiments described above. A rotatable feed table 10 having a rotatable supply table 10 and a rotatable winding table 12 having a winding core 13 for winding and holding the sheet 20 are arranged at predetermined intervals. An upper plate 14 having an operation unit 15 is attached to an upper portion of the winding core 13 of the take-up table, and the winding of the winding core 13 is made possible by rotating the upper plate 14. A part of the dust collecting wall 3 is formed with a longitudinal opening 3a which is used to draw out the sheet 20 to the outside and to draw the inside thereof, and the dust collecting wall 3 is formed at both sides of the opening 3a. The roller 16 and the tension roller 17 which guide a sheet | seat inside a side are provided.

The air cleaner 60 has a detachable cover unit 6 and is covered by the cover unit 6 so that the ionization electrode 4 and the dust collecting electrode 5 are not exposed to the outside. The cover unit 6 is formed with slit-shaped openings 6a and 6b through which air flows in and out. Moreover, the cover unit 6 is inserted into the core part of the sheet roll 20a supported by the supply table 10 at the top, and the support shaft 7 which supports the sheet roll 20a from upper direction, and winding-up The support rod 8 for pressing the upper plate of the core 13 of this is formed.

At the time of use of the air cleaner 60, a sheet suitable for dust collection, for example, a sheet roll 20a such as a roll-type toilet paper, is roll-supported on the supply table 10 at a central cavity thereof. To be inserted. And the edge part of the sheet | seat of the sheet roll 20a is taken out, and as shown in FIG. 10, from the opening 3a via the roller 16 located in the vicinity of the opening 3a formed in a part of the dust collecting wall 3, and The outer periphery of the dust collecting wall 3 is wound, and it is again pulled into the inside of the dust collecting wall 3 from the opening 3a, and is engaged with the winding core 13 on the winding table via the tension roller 17. As shown in FIG. Then, when a predetermined amount of dust or the like adheres to the surface of the sheet 20 wound around the outer circumference of the dust collecting wall 3 in accordance with the use of the air cleaner 1, the upper core 13 is moved to the upper operation part 15. It is operated and rotated, the sheet 20 is taken out from the sheet roll 20a by a predetermined amount and used.

Next, with reference to FIGS. 11-13, the drive mechanism of the supply table 10 which is a characteristic of this invention is demonstrated. 11 is an exploded explanatory view of the drive mechanism of the supply table and the take-up table 12 of the air cleaner 1 of this embodiment, FIG. 12 is a mounting state of the sheet at the time of dust collection, and FIG. It is a figure which shows the state. First, the drive mechanism of the supply table will be described with reference to FIGS. 11 and 12. The feed table 10 having the roll support 11 of this embodiment is rotatably coupled to the support shaft 31 provided on the base 2, the feed table 10 is below the ratchet gear 10a. Have Similarly, the winding table 12 is rotatably coupled to the support shaft 72 of the base 2, and a ratchet gear 12a is provided below the winding table 12. The ratchet gear is fitted with an anti-rotation arm 75 provided with an elastic deformation portion 75a.

In the opening 3a of the dust collecting wall 3, a tension roller 17 is provided to face the roller 16, which is rotatably coupled to the rotation shaft 45 of the base 2. It is supported by the tension arm 80. The tension arm 80 is composed of a rotating arm portion 81 in the horizontal direction and an upright portion 82 extending in the vertical direction at the end thereof, and has an approximately L shape. A shaft hole 83 is formed in the center portion of the rotation arm portion 81, and an engagement hole 84 is formed at one end portion. The tension arm 80 is rotatably coupled to the base 2 by inserting the shaft hole 83 into the rotation shaft 85. The tension arm 80 is biased in a direction that always rotates clockwise by a spring 86 fixed to the pin 87 of the base 2 so as to contact the pin 88 of the base 2. .

The upright part 82 of the tension arm is provided with tension roller support plates 82a and 82b, and the tension roller 17 is rotatably coupled to these support shafts 82c.

The tension arm 80 is coupled to a transfer arm 90 which is connected to the ratchet gear 10a of the supply table 10. The transfer arm 90 has an engaging protrusion 91 at one end thereof, and is engaged with the engaging arm 84 of the tension arm 80 so as to be rotatable to the tension arm 80 by engaging the engaging protrusion 91. It is connected. The other end of the transfer arm 90 is provided with a blade 92 engaged with the ratchet gear 10a. The transfer arm 90 is pressed by the pressing roller 96 in contact with the side of the transfer arm 90 so as to always contact the guide pin 78 fixed to the base 2, whereby the transfer arm The blade 92 of 90 is always fitted to the ratchet gear 12a of the feed table 10. The pressing roller 96 for pressing the transfer arm 90 is supported by an L-shaped pressing arm 95. The pressing arm 95 rotates the shaft 97 for supporting the pressing roller 96 in rotation. And a shaft hole 98. The crimping arm 95 is rotatably coupled with respect to the base 2 by inserting the shaft hole 98 into the support shaft 77 of the base 2, and the spring 99 at one end thereof. This is biased in the direction that rotates clockwise around the support shaft 77. As a result, the transfer arm 90 is always elastically crimped in the direction of the guide pin 79 by the pressing roller 96.

Here, the driving mechanism of the feed table 10 and the sheet conveying operation of the sheet according to the present embodiment will be described.

First, when the air cleaner 1 is used, the sheet roll 20a of the sheet is inserted into the roll supporting portion 11 of the feed table 10 to be joined, and one end of the sheet 20 is drawn out to guide roller 16. It is sent out from the opening 3a of the collecting wall 3 to the outside, the outer periphery of the dust collecting wall 3 is wound up, and is returned to the inside of the dust collecting wall 3 again from the opening 3a, and the tension roller 17 is rotated. It is fastened to the engagement part (not shown) of the winding core 13 of the winding table 12, and is fixed. As a result, the sheet 20 is wound in a state of being in close contact with the upper surface of the dust collecting wall 3 including the dust collecting electrodes 5, and the air cleaner 1 is operated in a state in which the cover unit 6 is mounted. do.

12 shows a state of the sheet 20 when the air cleaner 1 is used. In this case, the tension arm 80 is elastically biased in the direction of turning clockwise (A direction in the figure) about the rotation axis 85 by the spring 86, and by the action of the tension roller 17 20, the predetermined tension is applied, and the sheet 20 is wound in a state of being in close contact with the outer circumference of the dust collecting wall 3. Further, the winding table 12 is prevented from reverse rotation by the reverse rotation prevention arm engaged with the ratchet gear 12a, and the seat 20 is prevented from being relaxed.

As the operation time elapses, dust particles or the like adhere to the surface of the sheet 20 wound on the dust collecting wall 3 due to the dust collecting effect of the air cleaner 1, and become dirty. It is necessary to wind up the 20 and to send out a new sheet to the outer periphery of the dust collecting wall 3.

When winding the sheet 20, the cover unit 6 is first removed, and the operation unit 15 of the upper plate 14 coupled to the upper portion of the winding core 13 of the winding table 12 is rotated and wound. 13 shows the state at the start of the winding of the sheet 20, that is, at the time of sheet feeding. The winding of the sheet 20 is performed by rotating the winding core 13 in the C direction in the drawing by rotating the operation unit 15 of the upper portion of the winding table 12. However, at the start of winding, that is, the supply roller 10 At the start of the rotation, a large tension is applied to the sheet 20 to be wound. The tension applied to the sheet 20 acts on the tension roller 17 to press the tension roller 17 in the direction B in the drawing. By the force acting on the tension roller 17, the tension arm 80 rotates in the counterclockwise direction (B direction) and moves the transfer arm 90 connected to the tension arm in the direction D in the drawing. Let's do it. Then, the blade 92 at the tip of the transfer arm 90 presses the ratchet gear 10a of the feed table 10 engaged with it, and moves the ratchet gear 10a in the direction E in the figure. That is, when the winding table 12 is rotated, the tension acting on the sheet 20 acts on the tension roller 17 as the tension is increased, and this force is the tension arm 80 and the transfer arm 90. It is transmitted to the ratchet gear (10a) of the feed table 10 through, and acts to rotate the feed table. And the sheet 20 wound by this is sent out smoothly. In addition, once the feed table 10 starts to rotate, the tension applied to the seat 20 becomes small, and the tension arm 80 is turned clockwise (drawings) by the spring 86 coupled to the tension arm 80. In the opposite direction to B), whereby the transfer arm 90 moves in the opposite direction to D, and no action as a driving force for rotating the feed table 10 is eliminated.

As described above, in the present embodiment, the tension applied to the sheet at the start of winding is detected by the tension roller, and the driving force is rotated in the direction in which the feed table 10 pulls out the sheet 20. I use it. In other words, the tension roller 17 supported by the tension arm 80 has a function of detecting the winding of the sheet, and the ratchet of the tension arm 80, the transfer arm 90, and the supply table 10. The gear 10a detects that the sheet 20 is wound, and constitutes drive means for driving the supply table 10 in the direction in which the sheet is taken out.

As described above, according to the present embodiment, the tension roller coupled to the rotatable tension arm is interposed in the path of taking out the sheet from the feed table to the take-up table, and the rotation of the tension arm is performed in the direction of pulling out the sheet of the feed table. By driving, when the sheet is taken out, the sheet is smoothly drawn out, and excessive strain is applied to the sheet so that the sheet does not tear. In the use of the air cleaner, the sheet is always subjected to a predetermined tension, so that the drawn sheet can be wound in a state of being in close contact with the outer wall of the dust collecting wall.

In addition, according to the air purifier of the present embodiment, the sheet can be wound or unwound by simply rotating the handle by holding the operating portion of the take-up table, and the sheet does not need to be touched by hand or dirty the hand.

Claims (6)

A feed table to which dust collecting sheets for attaching dust floating in air are wound; A winding table for winding the dust collecting sheet drawn out from the supply table; And a driving means for rotating the supply table during the winding operation of the dust collecting sheet from the supply table to the take-up table. The method of claim 1, And said drive means is connected to said supply table and said winding table, and configured to rotate and drive said supply table as said winding table rotates. The method of claim 2, The driving means comprises a supply pulley provided on a supply table, a winding pulley provided on a winding table, and a belt connecting the supply pulley and the winding pulley, and the ratio of the diameter of the supply pulley and the winding pulley is a winding table. An air purifier, characterized in that the length of the dust collecting sheet supplied by the supply table is always shorter than the length of the dust collecting sheet to be wound. The method of claim 1, And the driving means is configured to detect the increase in tension of the dust collecting sheet pulled from the supply table to the take-up table and to rotate the supply table. The method of claim 4, wherein The drive means has a contact portion that contacts the dust collecting sheet pulled from the supply table to the winding table, and the contact portion is displaced in accordance with the increase in tension of the dust collecting sheet, and the displacement is used as a driving force to rotate the feed table. Air purifier, characterized in that. The method of claim 1, And the driving means is configured to detect the start of winding up of the dust collecting sheet by the winding table, and to drive the supply table to rotate in a predetermined amount in a direction in which the dust collecting sheet is drawn out.