JP4753847B2 - Vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner.

  FIG. 12 shows an external appearance of a conventional vacuum cleaner. The electric vacuum cleaner 101 includes a vacuum cleaner main body 102 and a hose 103. When a cleaning operation is performed in the electric vacuum cleaner 101, as shown in FIG. 13, an air flow 41 containing dust flows into the cleaner main body 102 via the hose 103. The vacuum cleaner 101 is assumed to be a cyclone system as an example. Since the vacuum cleaner 101 is of a cyclone type, the air flow 41 is guided to the cyclone separation unit 104 and becomes a rotational flow 42 in the cyclone separation unit 104, and the dust 51 is separated by the centrifugal force of the rotational flow 42, and is collected below. The dust case 105 is configured to collect and collect dust. The air flow after separating the dust 51 exits the cyclone separation unit 104 and passes through the filter unit 106 as air flows 43 and 44.

  The airflows 43 and 44 contain dust that could not be collected by the cyclone separation unit 104, but most of the dust is collected by a filter installed in the filter unit 106. That is, it adheres to the upstream surface of the filter.

  When dust accumulates on the filter, it is necessary to clean the filter. This cleaning operation is usually necessary if it is a vacuum cleaner provided with a filter not only in a cyclone type vacuum cleaner but also in other types of vacuum cleaners. A filter dust removal mechanism has already been put to practical use so that this cleaning operation can be easily performed. An example is shown in FIG.

  FIG. 14 shows the filter unit 106 as viewed from the downstream side. The filter unit 106 includes a filter 115 and a filter dust removal mechanism 161. The filter dust removing mechanism 161 includes a rail 165 and a movable body 166 that can move in parallel along the rail 165. The rail 165 is fixed to the filter frame 116 so as to cross the exposed portion of the filter 115. The moving body 166 includes a knob 166a that projects forward. The user can move the moving body 166 left and right by hooking his / her finger on the knob 166a. A vibration generating protrusion (not shown) that protrudes toward the filter 115 is provided on the back side of the moving body 166. The vibration generating protrusion protrudes at a height that contacts the filter 115. When the moving body 166 moves along the rail 165, the vibration generating protrusion repeatedly collides with the tops of the plurality of mountain shapes of the filter 115. In other words, the vibration generating protrusion scratches the surface of the filter 115. Due to this scratching operation, vibration is generated in the filter 115. Most of the dust adhering to the filter 115 is adhering to the upstream side, that is, the back side in FIG. Therefore, in order to clean the filter 115, the user may move the moving body 166 while holding the filter unit 106. By doing so, the dust adhering to the filter 115 falls off from the filter 115.

  If the vacuum cleaner includes such a filter dust removing mechanism in the filter unit, the user can quickly clean the filter with a simple operation without getting his hands dirty.

Several other techniques have been proposed for the filter dust removal mechanism. For example, in Japanese Patent Application Laid-Open No. 2004-358031 (Patent Document 1), dust is removed by a member piece colliding with each pleat-shaped peak portion of a filter in conjunction with an operation of taking out the dust collecting portion from the main body. The configuration is described. Further, in Patent Document 1, after the dust collection unit is taken out, the user can

It is disclosed that a configuration in which dust is removed from the filter by sliding the knob portion in operation is also used.
JP 2004-358031 A

  In the filter dust removal mechanism 161 (see FIG. 14) described above, the moving body 166 provided with the vibration generating protrusions only moves along the rail 165, and therefore is close to the rail 165 in the entire region where the filter 115 is stretched. In the portion, a sufficiently strong vibration is generated with a large amplitude, but only a small vibration having a small amplitude is generated in a portion far from the rail 165. Since this vibration bias is determined by the position of the rail 165, the part of the filter 115 that vibrates frequently vibrates well and dust removal is ensured, but the part that does not vibrate so much does not always vibrate. The state where dust removal is not sufficient continues fixedly. Therefore, the accumulated dust has not been sufficiently removed in a part of the filter area. This problem also exists in the mechanism described in Patent Document 1.

  The present invention has been made in view of the above-described conventional problems. By generating sufficient vibration for dust removal over the entire area of the filter with a simple operation, the user can quickly clean the filter without getting his hands dirty. An object of the present invention is to provide a vacuum cleaner that can be used.

  In order to achieve the above object, the present invention provides a fan for generating suction air, a filter having pleats for collecting dust contained in the suction air and arranging a plurality of mountain shapes in parallel, and the filter at the center. A filter holder having a holding frame for holding the filter, and a filter case for housing the filter so as to expose a downstream surface in the suction direction of the filter holder, and is attached to and detached from a mounting recess of the vacuum cleaner body In a vacuum cleaner comprising: a filter unit that is freely mounted; and a filter dust removal mechanism for separating dust adhering to the upstream surface in the suction direction of the filter by applying vibration to the filter. The filter dust removing mechanism includes an operation part that protrudes upward from the upper surface of the filter case and is movable up and down, and is attached to the operation part. And is moved up and down in conjunction with the operation portion, and is provided with a shaft having a flange portion at the lower end, and can be moved up and down in the mounting recess, and is moved up and down by engaging with the flange portion of the shaft. And a second tooth group that is rotatably provided on the filter holder and meshes with the first tooth group on the outer periphery so as to face a rack on the downstream side in the suction direction of the filter. And a vibration generating projection that protrudes from the rotating body toward a downstream surface in the suction direction of the filter and repels the peak of the pleat.

  According to this configuration, when the user repeatedly moves up and down with the operation unit, the rotating body repeatedly rotates in a reciprocating manner, and the vibration generating projection repeatedly collides with the peak portion of the pleat of the filter. In other words, the vibration generating projections scratch the surface of the filter so as to draw an arc. By this scratching operation, vibration is generated in the filter, and the dust adhering to the upstream surface in the suction direction of the filter separates from the filter and falls.

  In the vacuum cleaner of the present invention, a lid for opening and closing the upper opening of the mounting recess is provided in the vacuum cleaner body, and the filter dust removing mechanism projects the operation part upward from the upper opening of the mounting recess. A biasing means for biasing, and when the lid is closed, the operating portion is pushed down against the biasing of the biasing means, and when the lid is opened, the biasing means The operation unit protrudes upward by urging.

  In the vacuum cleaner of the present invention, the filter dust removing mechanism is provided on a surface of the filter case facing the filter holder, and extends in a vertical direction for projecting the flange portion of the shaft. And a second long hole extending in the vertical direction for projecting the flange of the shaft facing the first long hole and extending through the filter holder, By providing a hole seal packing in close contact with the peripheral edge of the second long hole of the filter holder around the first long hole, dust contained in suction air passes through the second long hole. It is characterized by preventing this.

  Further, in the electric vacuum cleaner of the present invention, the filter dust removal mechanism has a cavity formed to extend downward from the upper surface of the filter case by a predetermined distance, and the operation unit is inserted into the cavity, and the operation unit An operating portion guide that guides the vertical movement of the operating portion, and an axial hole that extends in the vertical direction substantially coaxially with the operating portion guide and communicates the cavity of the operating portion guide with the first elongated hole. A shaft guide in which the shaft is inserted into the shaft hole and guides the vertical movement of the shaft, and an operating portion guide is provided by providing a shaft seal packing in close contact with the shaft at an upper end of the shaft guide. It is characterized in that the generation of intake air that passes through the shaft hole of the shaft guide to the first and second elongated holes from the cavity is prevented.

  Moreover, the vacuum cleaner of the present invention is characterized in that a knob for rotating the rotating body is provided on the downstream surface in the suction direction of the rotating body.

  Further, in the electric vacuum cleaner of the present invention, the filter dust removing mechanism includes a ring-shaped rotating body holder that is supported by the filter holder and rotatably holds the rotating body, and is arranged in a suction direction of the rotating body holder. A rib on the downstream surface is provided around the mounting recess so as to prevent elastic deformation of the rotating body holder when the rotating body rotates.

  According to the present invention, by generating sufficient vibration for dust removal over the entire area of the filter as easily as possible by a simple operation, the user can quickly clean the filter without getting his hands dirty.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  First, the vacuum cleaner main body and the internal structure thereof will be outlined. 1 to 3 are external perspective views of a cyclone type electric vacuum cleaner that is an example of an embodiment of the present invention. FIG. 1 illustrates a dust collecting unit and a filter unit mounted in a mounting recess of the vacuum cleaner main body. 2 shows a state where the dust collecting unit is removed from the mounting recess of the cleaner body and the filter unit is attached, and FIG. 3 shows a state where the dust collecting unit and filter unit are removed from the mounting recess of the cleaner body. Is shown. In addition, in these figures, the suction hose inserted in the hose insertion port of the front end of the cleaner body is omitted.

  As shown in FIG. 3, a mounting recess 2 a is formed in the cleaner body 2 between the hose insertion port 3 and the blower chamber 4. A lid 5 for opening and closing the upper opening of the mounting recess 2a is provided so as to be freely opened and closed. 1 to 3 show a state in which the lid 5 is opened.

  As shown in FIGS. 1 to 3, the dust collecting unit 6 and the filter unit 7 are detachably mounted in the mounting recess 2 a independently of each other. As shown in FIG. 3, a partition wall 10 that divides the mounting recess 2 a into a mounting portion for the dust collection unit 6 and a mounting portion for the filter unit 7 is provided upright at the lower portion of the mounting recess 2 a.

  As shown in FIG. 3, an opening 4b into which suction air is sucked by the blower 11 (not visible in FIG. 3) is formed on the upstream wall surface 4a in the suction direction of the blower chamber 4, and the opening 4b. A grid member 66 is attached so as to cover. A flat plate member 22 b is attached adjacent to the left side of the lattice member 66. The front surface in FIG. 3 of the lattice member 66 and the flat plate member 67 constitutes a wall surface 22 facing the filter unit 7 of the mounting recess 2a. A net (not shown) is stretched in the gap between the lattice 66a of the lattice member 66.

  As shown in FIG. 1, when the lid 5 is opened, the handles 8 and 9 provided on the upper side of the dust collection unit 6 and the filter unit 7 are exposed. The handle 9 of the filter unit 7 also functions as an operation unit of a filter dust removing mechanism 32 described later. The grips 8 and 9 are urged upward, that is, upward by a coil spring (not shown) housed in the dust collection unit 6 and the filter unit 7, and when the lid 5 is closed, the lid 5 Although pushed down, the lid 5 is opened to project upward by the force of the coil spring. The user can pull out the dust collection unit 6 or the filter unit 7 from the cleaner body 2 with the handle 8 or 9.

  FIG. 4 is a schematic diagram of the internal structure of the vacuum cleaner main body of the electric vacuum cleaner. As shown in FIG. 4, the vacuum cleaner 1 includes a blower 11 for generating suction air inside the blower chamber 4 (see FIG. 3) of the cleaner body 2. The suction air generated by the blower 11 enters the cleaner main body 2 from the hose insertion port 3 of the cleaner main body 2 in a state including dust, and the inlet of the dust collecting unit 6 connected to the hose insertion port 3. It enters into the cyclone separation part 6a of the dust collection unit 6 from (not shown). In the cyclone separating unit 6a, the suction air becomes a rotating flow, dust is separated by the centrifugal force of the rotating flow, and collected in the dust collecting unit 6b below the cyclone separating unit 6a. The airflow after separating the dust exits from the two outlets 12 and 13 of the cyclone separator 6 a and passes through the filter 14 of the filter unit 7. The filter 14 is for collecting dust contained in the suction air coming out of the cyclone separation unit 6a. The filter 14 has pleats in which a plurality of mountain shapes are arranged in parallel.

  Next, the filter unit 7 will be described. 5 and 6 are a perspective view of the filter unit as viewed from the upstream side in the suction direction and a perspective view as viewed from the downstream side of the suction direction. FIG. 7 is a perspective view of the filter case that is a component of the filter unit. It is the perspective view seen from the downstream side.

  As shown in FIGS. 5 and 6, the filter unit 7 includes a filter 14, a filter holder 15 that holds the filter 14, and a filter case 16 that houses the filter 14.

  As shown in FIG. 6, the filter holder 15 is a substantially flat member having a holding frame 17 for holding the filter 14 at the center. The filter 14 is held on the holding frame 17. Ear pieces 18 to 20 project from the upper and left and right outer peripheral portions of the outer edge portion 15 a of the filter holder 15. The downstream surface (front surface in FIG. 6) of the outer edge portion 15a in the suction direction is exposed to the open side (the labor in FIG. 6) of the filter case 16 in the filter unit 7, and the filter 14 is placed on the surface. A packing 21 that surrounds the entire circumference is attached. Therefore, when the filter unit 7 is mounted in the mounting recess 2a (see FIG. 3) of the cleaner body 2, the packing 21 is attached to the wall surface 22 of the mounting recess 2a facing the filter holder 15 (the back of the mounting recess 2a in FIG. 3). To the outer edge of the wall. This prevents the suction air that has passed through the filter 14 from leaking from the gap between the filter unit 7 and the wall surface 22 of the mounting recess 2a.

  As shown in FIG. 7, the filter case 16 is a box-shaped member that has a filter housing portion 16 a in which the filter 14 is housed inside the outer shell portion 23 and is opened on the downstream side in the suction direction. As shown in FIG. 5, on the surface 16b of the filter case 16 that faces the dust collecting unit 4, the suction air that is connected to the outlets 12 and 13 of the cyclone separator 4b and that exits the cyclone separator 4a is received. Inflow ports 30 and 31 are provided to flow into the filter housing portion 16a.

  As shown in FIG. 7, square tube portions 24 and 25 for inserting the handle 9 are defined at the left and right ends of the filter housing portion 16a in FIG. A surrounding wall 26 that surrounds the outer shell 23 around the entire circumference is formed on the downstream surface of the outer shell 23 in the suction direction (the front surface in FIG. 7). Notches 27 to 29 with which the ear pieces 18 to 20 of the filter holder 15 are engaged are formed in the upper part and the left and right parts of the enclosure wall 26.

  Since the filter unit 7 has the above-described configuration, it is tilted so that the open side of the filter case 16 faces slightly upward as shown in FIG. 7, and is held with one hand so that the filter 14 faces the filter housing portion 16a. The outer edge portion 15a of the filter holder 15 held in the other hand is directed to the downstream surface in the suction direction of the outer portion 23 of the filter case 16, and the ear pieces 18 to 20 are formed in the corresponding notches 27 to 29. When engaged, the filter holder 15 is held inside the enclosure wall 26 of the filter case 16, and the filter 14 held by the filter holder 15 is received in the filter storage portion 16 a of the filter case 16. When removing the filter holder 15 from the filter case 16, the filter holder 15 may be pulled out by holding one of the ear pieces 18 to 20 of the filter holder 15.

  As shown in FIG. 4, the filter unit 7 includes a filter dust removal mechanism 32 on the downstream side in the suction direction of the filter 14. The filter dust removal mechanism 32 is for removing dust adhering to the upstream surface in the suction direction of the filter 14 by applying vibration to the filter 14, and the filter dust removal mechanism 32 will be described in detail below.

  The filter dust removing mechanism 32 includes a component 32A (see FIGS. 8 and 9) disposed in the filter case 16, a component 32B (see FIG. 3) disposed in the mounting recess 2a of the cleaner body 2, It is comprised from the component part 32C (refer FIG. 6) arrange | positioned at the filter holder 15. FIG.

  First, the component 32A of the filter dust removal mechanism 32 disposed in the filter case 16 will be described. 8 is a longitudinal sectional view of the filter unit as viewed from the upstream side in the suction direction, and FIG. 9 is a sectional view taken along line xx in FIG.

  As shown in FIG. 8, cavities 33 and 34 are formed in the rectangular tube portions 24 and 25 of the filter case 16 so as to extend downward from the upper surface of the filter case 18 by a predetermined distance. Leg portions 35 and 36 of a U-shaped handle 9 are inserted into the hollow portions 33 and 34 from above. As a result, the handle 9 is disposed so as to be movable up and down by projecting upward from the upper surface of the filter case 16 with the portions where the cavities 33 and 34 of the rectangular tube portions 24 and 25 are formed as handle guides 37 and 38.

  As shown in FIG. 8, the leg portions 35 and 36 of the handle 9 are formed in a rectangular tube shape corresponding to the shapes of the cavities 33 and 34 of the handle guides 37 and 38. The legs 35 and 36 have cavities 39 and 40 that extend upward from the lower surface by a predetermined distance. The shaft 41 and the L-shaped shaft 42 are fixed so as to pass through the central portions of the cavities 39 and 40 of the handle 9. Thereby, the shaft 41 and the L-shaped shaft 42 are provided so as to be movable up and down in conjunction with the handle 9. The L-shaped shaft 42 has a flange portion 42a that is refracted substantially at a right angle at the lower end thereof.

  As shown in FIG. 8, cylindrical shaft guides 43, 44 extending upward from the lower surfaces of the cavities 33, 34 are integrally formed in the cavities 33, 34 of the handle guides 37, 38. The shaft guides 43, 44 have shaft holes 45, 46 extending in the vertical direction substantially coaxially with the handle guides 37, 38. A shaft 41 and an L-shaped shaft 43 are inserted into the shaft holes 45 and 46. As a result, the shaft 41 and the L-shaped shaft 42 move up and down using the shaft guides 43 and 44 as guides.

  As shown in FIG. 8, coil springs 47 and 48 are arranged around the shaft guides 43 and 44. In the compressed state, the coil springs 47 and 48 are in contact with the upper surfaces of the cavities 39 and 40 of the handle 9 and the lower surfaces of the cavities 33 and 34 of the handle guides 37 and 38, respectively. Thereby, the handle 9 is urged | biased so that it may protrude upwards rather than the upper opening of the mounting | wearing recessed part 2a of the cleaner body 2 as shown in FIG.

  As shown in FIG. 7, the rectangular tube portion 25 is formed to extend downward as compared with the rectangular tube portion 24, and a surface (front surface in FIG. 7) facing the filter holder 15 of the extended portion. Is provided with a first elongated hole 49 extending in the vertical direction. As shown in FIG. 9, the lower end of the shaft hole 46 of the shaft guide 44 reaches the first long hole 49, and the shaft hole 46 communicates with the first long hole 49. And as shown in FIG. 7, the collar part 42a of the L-shaped shaft 42 protrudes from the 1st long hole 49 to the side facing the filter holder 15 (refer FIG. 6).

  As shown in FIG. 6, the filter holder 15 is provided with a second long hole 51 extending in the vertical direction at a position facing the first long hole 49 (see FIG. 7) of the filter case 16. ing. And the collar part 42a of the L-shaped shaft 42 protrudes from the 2nd long hole 51 to the wall surface 22 (refer FIG. 3) side of the mounting | wearing recessed part 2a.

  Here, since the second long hole 51 passes through the filter holder 15, dust that has entered the filter case 16 from the inlets 30, 31 is understood as seen from FIGS. 6 and 7. There is a possibility that a part of the suction air that is included unintentionally passes through the second long hole 51 having a lower ventilation resistance than the filter 14 without passing through the filter 14. When such a situation occurs, the dust contained in the suction air that has passed through the second long hole 51 reaches the downstream side in the suction direction of the filter unit 7, and the blower 11 (see FIG. 4) due to pressure loss of the suction air. This is not preferable, because it causes troubles and the trouble of removing dust caught on the net (not shown) stretched on the lattice portion 66a (see FIG. 3) of the lattice member 66 occurs.

  Therefore, as shown in FIG. 7, a hole seal packing 52 is provided around the first elongated hole 49 of the filter case 16 so as to be in close contact with the peripheral edge of the second elongated hole 51 of the filter holder 15. Since the hole seal packing 52 blocks the flow of the suction air through the second long hole 51, the dust contained in the suction air does not pass through the second long hole 51 and prevents the above-described problems. can do.

  However, even if the flow of the suction air through the second long hole 51 is blocked in this way, the shaft hole 46 of the shaft guide 44 communicates with the first long hole 49 as shown in FIG. As a result, the cavity 34 of the handle guide 38 and the first elongated hole 49 communicate with each other through the shaft hole 46, and the outside air passes through the clearance between the leg portion 36 of the handle 9 inserted into the cavity 34 and the handle guide 38. There is a possibility that intake air that flows into the interior and passes through the shaft hole 46 through the shaft hole 46 to the first and second elongated holes 49 and 51 may be generated. If such unintended intake air is generated, the suction force of dust by the suction air is weakened, and the driving power of the blower 11 (see FIG. 4) is wasted, which is not preferable.

  Therefore, as shown in FIG. 9, a shaft seal packing 50 that is in close contact with the L-shaped shaft 42 is provided at the upper end of the shaft guide 44. The shaft seal packing 50 ensures the airtightness in the filter case 16, so that no intake air is generated and the occurrence of the above-described problems can be prevented.

  Next, the component 32B of the filter dust removal mechanism 32 disposed in the mounting recess 2a of the cleaner body 2 will be described.

As shown in FIG. 3, the flat plate member 67 is provided with a rack 53 on the wall surface 22 side of the mounting recess 2a so as to be movable up and down. The rack 53 is urged upward on the back side of the wall surface 22 by urging means (not shown). Rack 53 has a first set of teeth 54 on the right side in FIG. 3, has a Kakarigokata 55 which engages the hook portion 42a of the L-shaped shaft 42 on the left side in FIG. 8.

  Next, the component 32C of the filter dust removing mechanism 32 disposed in the filter holder 15 will be described.

  As shown in FIG. 6, on the downstream side surface in the suction direction of the outer edge portion 15a of the filter holder 15 (the front surface in FIG. 6), there are four leg-like support portions 56a projecting substantially radially from the outer periphery. A ring-shaped rotating body holder 56 is supported. A rotating body 57 described later is rotatably held in the rotating body holder 56 so as to face the downstream surface (front surface in FIG. 6) of the filter 14 in the suction direction.

Figure 10 is a perspective view taken inside out and remove the rotary body 5 7. As shown in FIG. 10, the rotating body 57 has a wheel shape including a central portion 58, an annular portion 59 disposed on the outer periphery, and an intermediate portion 60 that connects the central portion 58 and the annular portion 59. . The upper side in FIG. 10 is the side facing the filter 14. On the back side of the rotator 57 , that is, the surface facing the filter 14 (upper surface in FIG. 10), a vibration generating projection 61 protruding toward the downstream surface in the suction direction of the filter 14 is integrally provided. A plurality of vibration generating protrusions 61 are arranged at equal intervals in the circumferential direction in the annular portion 59. The vibration generating protrusion 61 protrudes at a height that is in contact with the filter 14, and can rotate a plurality of peak portions of the pleats of the filter 14 by the rotating operation of the rotating body 57. Thereby, the dust adhering to the upstream surface of the filter 14 in the suction direction can be separated by applying vibration to the filter 14.

  As shown in FIG. 10, the rotating body 57 has a second tooth group 62 on the outermost periphery. FIG. 11 is a schematic perspective view of the cleaner body showing a positional relationship between the first tooth group and the second tooth group in a state where the filter unit is mounted in the mounting recess of the cleaner body. FIG. 11 shows the lattice member 66 as viewed from the filter unit 7 side. In FIG. 11, only the rotating body holder 56 and the rotating body 57 are displayed in the filter unit 7. As shown in FIG. 11, the left end of the second tooth group 62 in FIG. 11 is engaged with the lower part of the first tooth group 54.

  Returning again to FIG. In the rotating body 57, the annular portion 59 is partially covered by the rotating body holder 56, but the central portion 58 and the intermediate portion 60 are exposed so that the rotating portion 57 can rotate around the central shaft 63. Installed. The central axis 63 is a virtual center line for the rotating body 57. The rotating body 57 includes a knob 64 on the downstream surface (the front surface in FIG. 6) of the intermediate portion 60 in the suction direction. The knob 64 protrudes downstream in the suction direction (front side in FIG. 6), and the user can rotate the rotating body 57 by picking the knob 64 and turning it around the central axis 63.

  Here, the filter 14 is made of a paper material having a certain degree of hardness (for example, HEPA) so that the vibration generating projection 61 can be surely vibrated by repelling the peak of the pleats by the rotation of the rotating body 57. It has been. Therefore, when the vibration generating projection 61 repels the filter 14, the rotating body 57 is subjected to a reaction from the peak portion of the pleat toward the downstream side in the suction direction (backward in the drawing in FIG. 11). On the other hand, since the ring-shaped rotating body holder 56 that holds the rotating body 57 is supported by the leg-shaped support portions 56a that extend substantially radially as described above, a certain degree of elasticity may occur in the axial direction. Inevitable. Therefore, when the rotating body 57 is subjected to the reaction described above, a load is applied to the rotating body holder 56 toward the downstream side in the suction direction (backward in the drawing in FIG. 11), and the rotating body holder 56 may be elastically deformed. . Such elastic deformation of the rotating body holder 56 is not preferable because sufficient vibration cannot be applied to the filter 14 by the rotating operation of the rotating body 57, resulting in defective removal of dust. In particular, when the knob 64 protruding to the downstream side in the suction direction (backward in the drawing in FIG. 11) is provided on the rotating body 57 as in the present embodiment, the knob 64 is the lattice 66a of the lattice member 66 of the mounting back portion 2a. Since it is necessary to set a gap between the rotating body holder 56 and the lattice member 22a so that the rotation of the rotating body 57 is not hindered by being caught by (see FIG. 3), such a rotating body The holder 56 is likely to be elastically deformed.

  Therefore, as shown in FIG. 6, a rib 65 having a predetermined height is integrally provided along the outer periphery of the downstream surface (front surface in FIG. 6) of the rotating body holder 56 in the suction direction. As a result, the strength of the rib 65 in the height direction increases, the rib 65 abuts against the wall surface 22 (see FIG. 3) of the mounting recess 2a, and the gap between the rotator holder 56 and the wall surface 22 is filled. Since the rotating body holder 56 is not elastically deformed during the rotation of 59, the above-described problems can be prevented. In FIG. 6, in consideration of the detachability of the filter unit 7, there is an area where the rib 65 is not formed in the upper portion of the outer periphery of the rotating body holder 56, but of course, the rib 65 may be provided on the entire outer periphery.

  Next, operation | movement of the filter dust removal mechanism 32 provided with said structure is demonstrated. As shown in FIG. 1, the lid 5 of the cleaner body 2 is opened and the user holds the handle 9 in the state where the dust collecting unit 4 and the filter unit 7 are mounted in the mounting recess 2a of the cleaner body 2, and the arrow A in FIG. 8 and 9, the L-shaped shaft 42 fixed to the handle 9 moves downward as shown by the arrow B in FIGS. 8 and 9, and the flange portion of the L-shaped shaft 42 is moved as shown by the arrow C in FIG. The rack 53 with which 42a is engaged moves downward. When the rack 53 moves downward, the rotating body 57 having the second tooth group 62 that meshes with the first tooth group 54 as shown by the counterclockwise arrow D in FIG. It rotates by a predetermined angle. When the user removes the force that has pushed down the handle 9, the handle 9 moves upward by the urging force of the coil springs 47 and 48 (see FIGS. 8 and 9) as shown by the arrow E in FIG. The L-shaped shaft 42 moves upward as indicated by the arrow F, and the rack 53 maintains the engaged state with the flange 42a by the urging force of the urging means (not shown) as indicated by the arrow G in FIG. Move upward. Then, as the rack 53 moves upward, the rotating body 57 rotates around the rotation shaft 63 in the opposite direction by a predetermined angle as indicated by a clockwise arrow H in FIG.

By repeating vertical movement of such handle 9, the rotating body 57 is repeatedly rotated in a reciprocating, oscillating generating projections 61 is to be repeatedly colliding against gable-top of the pleats of the filter 14. In other words, the vibration generating projections 61 is the surface of the filter 14, so that scratching so as to draw an arc. By this scratching operation, vibration is generated in a wide range of the filter 14, and the dust adhering to the upstream surface of the filter 14 in the suction direction separates from the filter 14 and falls. Therefore, the user can clean the filter 14 quickly with a simple operation without getting his hands dirty.

  Since the dust dropped by the filter dust removing mechanism 32 is collected on the bottom surface of the filter housing portion 16a of the filter case 16, if the filter unit 7 is later taken out and the filter housing portion 16a is opened, the accumulated dust is collected in a trash can or the like. Can be discharged. At this time, since the upstream surface in the suction direction of the filter 14 held by the filter holder 15 is also exposed, the cleaning condition of the filter 14 can be confirmed. If it is determined that the filter 14 is not sufficiently cleaned, the filter holder 15 is placed on a newspaper or the like so that the surface of the filter 14 shown in FIG. What is necessary is just to rotate the rotary body 57 directly. By doing so, dust that could not be removed by the vertical movement operation of the handle 9 is dropped from the filter 14 and dropped onto newspaper or the like, and the filter 14 can be carefully cleaned.

  In the filter dust removing mechanism 32 of the present embodiment, the first tooth group 54 of the rack 53 and the second tooth group of the rotating body 57 in a state where the filter unit 7 is mounted in the mounting recess 2 a of the cleaner body 2. 62, the user himself / herself does not consciously hold the handle 9 to move up and down. The filter 14 can be dedusted.

  That is, since the handle 9 moves up and down each time the lid 5 is opened or closed, the filter dust removing mechanism 32 operates in the same manner as described above, and the rotating body 57 It rotates by a predetermined angle. When this rotation occurs, the vibration generating projection 61 of the rotating body 57 scratches the surface of the filter 14, so that the filter 14 can be vibrated to remove some of the attached dust. Thus, even if the user is completely unaware of the dust removal of the filter 14, for example, when the lid 5 is opened and closed in order to throw away the dust accumulated in the dust collection unit 4, the filter 14 naturally removes a certain amount of dust. Can do.

  Alternatively, the rotating body holder 56 moves up and down each time an operation for attaching or removing the filter unit 7 to or from the mounting recess 2a is performed, so that the first and second tooth groups 54 and 62 are engaged. Causes the rotating body 57 to rotate somewhat. Referring to FIG. 11, the rotating body 57 rotates counterclockwise (in the direction of the arrow D) in the rotating body holder 56 during the removing operation, and the rotating body 57 is positioned in the rotating body holder 56 at the time of the attaching operation. To rotate clockwise (in the direction of arrow H). When this rotation occurs, the vibration generating protrusion 61 of the rotating body 57 scratches the surface of the filter 14, so that the filter 14 can be vibrated to remove some of the attached dust. Thus, for example, when the filter unit 7 is attached or detached to discard dust accumulated on the bottom of the filter case 16, the filter 14 can be removed to some extent by itself.

  In the present embodiment, a cyclone type vacuum cleaner has been described as an example, but a paper pack type vacuum cleaner that uses a paper pack instead of the cyclone separation unit and the dust collection unit of the dust collection unit may be used. Needless to say, the same filter dust removing mechanism can be applied as long as the filter unit is provided downstream in the suction direction of the dust collecting unit.

These are the external appearance perspective views of the cyclone type electric vacuum cleaner which is an example of the embodiment of the present invention, and are the figures showing the state where the dust collection unit and the filter unit were installed in the installation concave part of the vacuum cleaner body. FIG. 2 is an external perspective view of the same electric vacuum cleaner as in FIG. 1, showing a state in which the dust collection unit is removed from the mounting recess of the vacuum cleaner body and the filter unit is mounted. FIG. 2 is an external perspective view of the same electric vacuum cleaner as in FIG. 1, showing a state where the dust collection unit and the filter unit are removed from the mounting recess of the vacuum cleaner body. These are the schematic diagrams of the internal structure of the vacuum cleaner main body of a vacuum cleaner. FIG. 3 is a perspective view of the filter unit as viewed from the upstream side in the suction direction. FIG. 5 is a perspective view of the filter unit as viewed from the downstream side in the suction direction. FIG. 5 is a perspective view of the filter case viewed from the downstream side in the suction direction. These are the longitudinal cross-sectional views which looked at the filter unit from the upstream of the suction direction. FIG. 9 is a sectional view taken along line xx of FIG. FIG. 3 is a perspective view of the rotating body taken out and turned over. These are the schematic perspective views of the cleaner body which shows the positional relationship of the 1st tooth group and the 2nd tooth group in the state where the filter unit was mounted in the mounting recess of the body. These are the perspective views of the vacuum cleaner based on a prior art. These are explanatory drawings of the cyclone system in the vacuum cleaner based on a prior art. These are perspective views of the filter dust removal mechanism used for the vacuum cleaner based on a prior art.

Explanation of symbols

1 Vacuum cleaner 2 Vacuum cleaner body
2a mounting recess 7 filter unit 9 handle (operation part)
14 Filter 15 Filter holder 16 Filter case 32 Filter dust removal mechanism 42 L-shaped shaft (shaft having a flange at the lower end)
42a collar 48 coil spring (biasing means)
49 First slot 50 Shaft seal packing 51 Second slot 52 Hole seal packing 53 Rack 54 First tooth group 56 Rotating body holder 57 Rotating body 61 Vibration generating projection 62 Second tooth group 64 Knob

Claims (6)

A blower for generating suction air;
A filter having a pleat that collects dust contained in the suction air and arranges a plurality of mountain shapes in parallel, a filter holder having a holding frame for holding the filter in the center, and a suction direction of the filter holder A filter case that houses the filter so as to expose a downstream surface, and a filter unit that is detachably mounted in a mounting recess of the vacuum cleaner body;
A filter dust removing mechanism for separating dust adhering to the upstream surface in the suction direction of the filter by applying vibration to the filter;
In the vacuum cleaner with
The filter dust removing mechanism is
An operation part that protrudes upward from the upper surface of the filter case and that can be moved up and down;
A shaft attached to the operation unit, moving up and down in conjunction with the operation unit, and having a flange at the lower end,
A rack that is provided in the mounting recess so as to be movable up and down, moves up and down by engaging with the flange portion of the shaft, and has a first tooth group;
A rotating body rotatably provided on the filter holder so as to face the downstream surface of the filter in the suction direction, and having a second tooth group on the outer periphery that meshes with the first tooth group;
Projecting toward the downstream side of the surface of the suction direction of the filter from the rotating body, it is arranged in the circumferential direction in the annular portion which is disposed on the outer periphery of the rotating body, a plurality of vibration to play the gable-top of the pleat Generating protrusions;
I have a,
A vacuum cleaner , wherein dust attached to the filter is separated by reciprocating rotation of the rotating body in conjunction with the vertical movement of the operation unit or the attachment / detachment operation of the filter unit . The main body of the vacuum cleaner is provided with a lid that opens and closes the upper opening of the mounting recess.
The filter dust removing mechanism has an urging means for urging the operation unit to protrude upward from the upper opening of the mounting recess,
When the lid is closed, the operation part is pushed down against the urging force of the urging means, and when the lid is opened, the operation part protrudes upward by the urging force of the urging means. The electric vacuum cleaner according to claim 1. The filter dust removing mechanism is
A first elongated hole provided in a surface of the filter case facing the filter holder and extending in a vertical direction for projecting the flange portion of the shaft;
A second elongate hole extending through the filter holder and extending in the vertical direction for projecting the flange of the shaft facing the first elongate hole;
Have
By providing a hole seal packing in close contact with the peripheral edge of the second elongated hole of the filter holder around the first elongated hole of the filter case, dust contained in the suction air can be removed from the second elongated hole. The vacuum cleaner according to claim 1, wherein the vacuum cleaner is prevented from passing through. The filter dust removing mechanism is
An operating portion guide having a cavity formed to extend downward from the upper surface of the filter case by a predetermined distance, the operating portion being inserted into the cavity, and guiding the vertical movement of the operating portion;
The shaft having a shaft hole that is formed to extend in the vertical direction substantially coaxially with the operation portion guide and communicates with the cavity of the operation portion guide and the first elongated hole, and the shaft is inserted into the shaft hole, A shaft guide for guiding the vertical movement of the shaft;
Have
By providing a shaft seal packing that is in close contact with the shaft at the upper end of the shaft guide, the generation of intake air that passes through the shaft hole of the shaft guide through the shaft hole of the shaft guide to the first and second elongated holes. The vacuum cleaner according to claim 3, wherein the vacuum cleaner is prevented.   The electric vacuum cleaner according to any one of claims 1 to 4, wherein a knob for rotating the rotating body is provided on a surface on the downstream side in the suction direction of the rotating body. The filter dust removing mechanism is supported by the filter holder, and has a ring-shaped rotating body holder that rotatably holds the rotating body,
A rib is provided on the downstream surface of the rotating body holder in the suction direction so as to contact the mounting recess and prevent the rotating body holder from elastically deforming when the rotating body rotates. The electric vacuum cleaner according to claim 5.

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