JP4812714B2 - Vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner, and more particularly to a vacuum cleaner provided with a dust collection box.

  As a conventional electric vacuum cleaner, for example, “the vacuum cleaner main body 10 has a lower cover 11 that opens upward and a dust collecting unit 12 that is disposed in front of the lower cover 11 and collects dust. And an electric blower chamber 15 that houses an electric blower 14 that is arranged behind the lower cover 11 and generates suction air. The upper portion of the electric blower chamber 15 is covered with an upper cover 16, and the dust collection chamber 13 is rotatably supported by the upper cover 16 so as to be covered with an openable / closable lid 18. The dust collecting means 12 includes a fixed portion 12a formed of a hard material. The dust collecting portion 12b is formed of a soft material such as paper or cloth, has ventilation, and is formed in a bag shape, and a check valve 22 is held in front of the dust collecting chamber 13. The front wall 21 is formed, and a cross section is provided below the dust collection chamber 13 side. A substantially L-shaped holding rib 45 is provided in a U-shape, and a fixed portion presser 47 that is urged by a spring 46 and pivotally supported is provided above the holding rib 45. These are configured as holding means for storing the dust collection means 12. The storage configuration is as follows: The dust collection means 12 is mounted on a basket 23 which is a mounting portion. Then, the basket 23 is mounted in the dust collecting chamber 13, and the fixed portion presser 47 is rotated and hooked and held on the upper end frame of the fixed portion 12a of the dust collecting means 12 and stored. The fixed portion 12a is held in close contact with the check valve 22, and air tightness between the dust collecting means 12 and the dust collecting chamber 13 for collecting dust is established, and measures against dust leakage can be taken. (Refer to Patent Document 1, for example). The has been proposed.

Japanese Patent Laying-Open No. 2006-6611 (paragraph numbers 0016 to 0019, FIGS. 1 and 2)

  Generally, in a vacuum cleaner with a dust collection form using a dust collection bag, a bag-like body (dust collection bag) that is made of a filter medium such as air-permeable paper and collects dust, etc., and a cardboard that has a dust suction port, etc. A dust collection bag made of a mount and formed on the bag-like body is used. The dust collection bag is attached to the suction port in the dust collection chamber directly or through a breathable basket or the like. The dust collection chamber is kept airtight inside by a lid provided at the top thereof, and collects dust and the like sucked by the electric blower with a dust collection bag.

  In the vacuum cleaner configured as described above, if there is a mistake in attaching the dust bag, dust may leak into the dust chamber and the dust chamber may become dirty. Although most of the dust sucked by the electric blower is collected by the dust bag, some fine dust may pass through the dust bag and the dust chamber may become dirty. Further, when the pressure in the dust collection chamber rises due to clogging of dust and the dust collection bag is damaged, the dust collection chamber may become dirty. However, the conventional vacuum cleaner using a dust collection bag has a problem that it is difficult to clean the dust collection chamber when the dust collection chamber becomes dirty as described above.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a vacuum cleaner that does not contaminate the dust collection chamber.

The vacuum cleaner according to the present invention includes a main body suction port, a dust collection chamber communicating with the main body suction port, a dust collection box detachably accommodated in the dust collection chamber, and the electric blower suction port. In an electric vacuum cleaner comprising an electric blower chamber that communicates with the dust collection chamber and houses an electric blower that generates intake air, the dust collection box has a dust collection box suction port at a position facing the main body suction port. It is formed and has an airtight box shape in which a dust collection box exhaust port is formed at a position facing the electric blower suction port, and the inside of the dust collection box is sucked from the dust collection box suction port. A dust bag for collecting dust can be detachably attached, and the main body suction port, the dust collection box, and the electric blower chamber form a series of airtight air passages, and the dust collection box The dust collection box exhaust port is shaped It has been surface and the projection portion is provided on the inner wall of at least one surface of the adjacent surfaces, the dust box, the dust box inlet in a state where the dust box is accommodated in the dust collecting chamber In a state where the dust collection box is not housed in the dust collection chamber, a dust leakage prevention shutter portion that closes the dust collection box suction port and a rotatable dust collection bag are provided. In a state of being mounted inside the box, one end has a dust leakage prevention shutter stopper portion sandwiched between the dust collection bag and the dust collection box, and the other end of the dust leakage prevention shutter stopper portion is In a state where the dust bag is not mounted inside the dust box, the dust bag is positioned within the movable range of the dust leakage prevention shutter part, and the dust bag is mounted inside the dust box. In the state, one end of the dust leak preventing shutter stopper portion is sandwiched between the dust collecting box and the dust collection bag, it is to move out of the movable range of the dust leak preventing shutter.

In the present invention, the dust collection bag is provided in an airtight dust collection box, and the main body suction port, the dust collection box, and the electric blower chamber are formed in a series of airtight air passages. A vacuum cleaner can be obtained. Further, since the dust collection box is detachably provided in the dust collection chamber, the dust collection box can be easily cleaned even if the dust collection box is contaminated with dust or the like. Further, since the dust collection box has a protrusion on the inner wall of at least one of the surfaces in contact with the surface on which the dust collection box exhaust port is formed, the dust collection bag expands in the dust collection box. In addition, an air passage for intake air can be secured, and a reduction in suction force that is a concern when the dust bag is mounted in an airtight dust collection box can be prevented. Furthermore, the dust collection box opens the dust collection box suction port when the dust collection box is housed in the dust collection chamber, and the dust collection box suction port when the dust collection box is not housed in the dust collection chamber. A dust leakage prevention shutter that closes the dust collection shutter, and a dust leakage prevention shutter that is pivotally provided and is clamped between the dust collection bag and the dust collection box when the dust collection bag is mounted inside the dust collection box. The other end of the dust leakage prevention shutter stopper portion is located within the movable range of the dust leakage prevention shutter portion when the dust bag is not mounted inside the dust collection box. When the dust bag is installed inside the dust collection box, one end of the dust leakage prevention shutter stopper is sandwiched between the dust collection bag and the dust collection box, and the movable range of the dust leakage prevention shutter is To move to. For this reason, when the dust bag is not installed in the dust collection box, the other end of the dust leakage prevention shutter stopper is located within the movable range of the dust leakage prevention shutter, so the dust leakage prevention shutter The part cannot open the dust collection box suction port (that is, the dust collection box cannot be accommodated in the dust collection chamber), and can notice that the dust collection bag is forgotten to be installed in the dust collection box at an early stage. Therefore, it is possible to use the vacuum cleaner safely and cleanly without forgetting to attach the dust bag to the dust box.

FIG. 1 is a perspective view showing the overall configuration of the electric vacuum cleaner according to the embodiment of the present invention.
One end of a bellows-like hose 91 is detachably connected to a suction port provided on the front side of the vacuum cleaner body 1 including a dust collection box 21 and an electric blower 72 which will be described later. A hand grip 93 having a hand operation switch 92 is provided. One end of an extendable extension tube 94 is detachably connected to the hand grip 93, and a suction port body 95 is detachably connected to the other end of the extension tube 94.

2 is a perspective view of the cleaner body 1, FIG. 3 is a side view of the state in which the upper lid 5 is closed, FIG. 4 is a side view of the state in which the upper lid 5 is opened, and FIG. 6 is a perspective view of a state where the dust collection box 21 of FIG. 4 is not accommodated in the dust collection chamber 20, and FIG. 7 is a cross-sectional view taken along line AA of FIG.
The vacuum cleaner main body 1 is composed of a main body 2 composed of a cylindrical upper case 3 and a bottomed cylindrical lower case 4 and an upper lid 5 whose upper surface is formed in a gentle arc shape. It is connected to the main body 2 via a hinge 6 (not shown), and opens and closes the upper surface opening of the main body 2. A latch button 7 for locking the upper lid 5 is provided on the front side of the upper lid 5.

  A handle member 10 is provided integrally with the main body 2 on the front side of the main body 2, and has a hose connection port 11 communicating with the main body suction port 8, and a gate-type extending obliquely upward from both sides thereof. The handle 12 is constituted. An extending portion 13 is provided integrally with the main body portion 2 on the rear surface side of the main body portion 2, and a main body exhaust port 14 is provided on the upper surface side of the rear portion. Reference numeral 15 denotes a cord (a plug is shown in the figure) wound around a cord reel 80 (FIG. 5), and 16 denotes a plurality of wheels provided on the bottom surface of the main body 2.

  Inside the main body 2, a front-side dust collection chamber 20 and a rear-side electric blower chamber 70 are formed by a partition wall 17 provided substantially at the center. The dust collection chamber 20 communicates with the main body suction port 8, and a dust collection box 21 is accommodated therein so as to be detachable. The partition wall 17 is formed with a substantially cylindrical electric fan suction port 71 protruding toward the dust collecting chamber. The front side of the electric blower chamber 70 communicates with the dust collecting chamber 20 via the electric blower suction port 71, and the rear side communicates with the main body exhaust port 14. An electric blower 72 is provided inside the electric blower chamber 70, and the upper part is covered with an upper cover 73 having a shape substantially corresponding to the inner wall of the upper lid 5.

  FIG. 8 is a front perspective view of the dust collection box 21 according to the embodiment of the present invention with the dust collection box cover 23 being closed, and FIG. 9 is a diagram illustrating the dust collection box cover 23 of the dust collection box 21 being closed. FIG. 10 is a rear side perspective view of the dust collection box 21 and FIG. 10 is a rear perspective view of the dust collection box 21 with the dust collection box cover 23 opened.

  The dust collection box 21 includes a dust collection box main body portion 22, a dust collection box lid portion 23, a handle portion 24, a dust leakage prevention shutter portion 40, a dust leakage prevention shutter stopper portion 50, a dust collection bag release button portion 60, and the like. Has been. The dust collection box main body portion 22 has a substantially box shape with an open rear portion, and has a shape substantially corresponding to the front side inner wall of the dust collection chamber 20 from the front surface portion to the side surface portion. A substantially circular dust collection box suction port 25 is formed at a position facing the main body suction port 8 in a state where the dust collection box 21 is housed in the dust collection chamber 20. A handle portion 24 used when the dust collection box 21 is attached to and detached from the dust collection chamber 20 is provided on the upper portion of the dust collection box body portion 22 via a hinge 24a. In addition, an opening / closing button 32 used for opening / closing the dust collection box main body portion 22 and the dust collection box lid portion 23 is provided at the upper portion.

  The dust collection box lid portion 23 has a substantially box shape with an open front portion, and a concave portion 26 slightly wider than the diameter of the electric blower suction port 71 is provided in the vertical direction on the rear surface portion. The concave portion 26 functions as a guide when the dust collection box 21 is accommodated in the dust collection chamber 20, and positions the main body suction port 8 and the dust collection box suction port 25 and the dust collection box exhaust port 27. Positioning is facilitated (FIG. 7). A dust collection box exhaust port 27 is formed in the concave portion 26 at a position facing the electric blower suction port 71 in a state where the dust collection box 21 is housed in the dust collection chamber 20. A filter 28 is provided on the inner wall of the recess 26 of the dust collection box lid 23 so as to cover it. The dust collection box lid portion 23 is connected to the dust collection box main body portion 22 at the lower portion by a hinge 29 and can be freely opened and closed. In addition, the opening of the dust collection box lid 23 and the opening of the dust collection box main body 22 have substantially the same shape, and a packing (not shown) is provided in the opening of the dust collection box lid 23. Therefore, when the dust collection box cover 23 is closed, the airtightness in the dust collection box 21 is maintained.

  On the inner wall of the dust collection box 21, that is, on the inner walls of the dust collection box main body 22 and the dust collection box lid 23, a protrusion 30 and a rib 31 are provided. The ridges 30 and the ribs 31 correspond to the protrusions in the present invention. The dust collection box main body 22 is provided with a protrusion 30 extending in the lateral direction on the inner wall from both side surface portions to the front surface portion. A rib 31a extending in the front-rear direction is provided on the inner wall of the lower surface portion. The dust collection box lid portion 23 is provided with a rib 31b extending in the lateral direction at a location other than the concave portion 26 on the rear surface portion, and the rib 31b is provided with a notch 31c at a substantially central portion. This notch 31c is a ventilation part of this invention, and is equivalent to a notch part. The filter 28 provided in the recess 26 is held by a filter cover 28a, and the filter cover 28a is also provided with a lattice-like rib 28b.

  The dust leakage prevention shutter unit 40 includes a dust leakage prevention shutter 41 and a dust leakage prevention shutter hinge 42. The dust leakage prevention shutter 41 has a substantially circular shape slightly larger than the dust collection box suction port 25, and a tongue piece 41a is formed on the outer periphery. The tongue piece 41 a is pivotally attached by a dust leak prevention shutter hinge 42 provided at the upper part of the dust collection box suction port 25.

  The dust leak prevention shutter hinge 42 and the dust bag release button 60 described later also have a function as a stopper of the dust leak prevention shutter 41. When the dust leak prevention shutter 41 is regarded as the hour hand of the clock, the dust leak The prevention shutter 41 is at a position of about 3 o'clock when viewed from the front of the dust collection box 21 (the dust collection bag release button portion 60 is functioning as a stopper, and the position of the dust leakage prevention shutter 41 shown in FIG. 8). , About 6 o'clock position (where the dust leakage prevention shutter hinge 42 functions as a stopper, and the dust leakage prevention shutter 41 closes the dust collection box suction port 25). It has become. In addition, the dust leakage prevention shutter 41 is located at a position where the dust leakage prevention shutter 41 closes the dust collection box suction port 25 by, for example, a spring (not shown) provided inside the dust leakage prevention shutter hinge 42 (at 6 o'clock). ).

  FIG. 11 is an exploded perspective view of main parts from the front right side of the dust leakage prevention shutter stopper 50 according to the embodiment of the present invention. FIG. 12 is an enlarged view of a main part of the dust leakage prevention shutter stopper 50, (a) is a front view, and (b) is a right side view. FIG. 13 is a rear perspective view of a state in which the dust collection box cover 23 according to the embodiment of the present invention is opened. FIG. 14 is a longitudinal sectional view of FIG. 11 and 12 illustrate the dust leakage prevention shutter stopper portion 50 in a state where the front portion or the front portion of the dust collection box main body portion 22 is transmitted for easy explanation. Hereinafter, the dust leakage prevention shutter stopper portion 50 will be described with reference to FIG. 8 and FIGS. 11 to 12.

  As shown in FIG. 8, the dust leakage prevention shutter stopper portion 50 is provided on a front surface portion of the dust collection box body portion 22 in a recess 22 a formed on the right side of the dust collection box suction port 25. As shown in FIGS. 11 to 14, the dust leakage prevention shutter stopper portion 50 includes a mount receiving lever 51, a spacer 52, a dust leakage prevention shutter stopper 53, and a torsion spring 54 of the dust bag 100.

  The mount receiving lever 51 has a shape in which a tongue piece 51b is formed on one surface of the flat plate portion 51a and a shaft 51c is formed on the other surface. The shaft 51c is inserted into a hole 22c provided in a flat surface portion 22b formed from the front surface portion of the dust collection box main body portion 22 to the concave portion 22a. At this time, the tongue piece 51b is positioned in the direction of the dust collection box suction port, and when the dust collection bag 100 is attached to the dust collection box, the front inner wall of the dust collection box body 22 and the mount of the dust collection bag 100 are mounted. 101.

  The spacer 52 has a substantially disk shape, and a convex portion 52a is formed on one surface, and a concave portion is formed on the other surface. A hole 52b is formed in the substantially central portion. In the spacer 52, the shaft 51c of the mount receiving lever 51 is inserted into the hole 52b, and a convex portion provided around the hole 22c of the flat surface portion 22b is fitted into the concave portion of the spacer 52.

  The dust leakage prevention shutter stopper 53 has a shape in which a protruding piece 53b substantially perpendicular to the flat plate portion 53a is formed at the end of the flat plate portion 53a. A hole 53c is formed in the flat plate portion 53a. This dust leakage prevention shutter stopper 53 is fixed to, for example, a screw at the tip of the shaft 51c of the mount receiving lever 51 through a hole 53c. At this time, the protruding piece 53 b protrudes in the direction of the dust collection box suction port 25 substantially parallel to the front surface portion of the dust collection box main body 22.

  Between the spacer 52 and the dust leakage prevention shutter stopper 53, a convex portion 52a of the spacer 52 is inserted and a torsion spring 54 is provided. One end of the torsion spring 54 is fixed to the spacer 52, and the other end is fixed to a dust leakage prevention shutter stopper 53. The torsion spring 54 urges the dust leakage prevention shutter stopper 53 in the counterclockwise direction in FIG. That is, the dust leakage prevention shutter stopper portion 50 includes the mount receiving lever 51 and the dust leakage prevention shutter stopper 53 that are rotatably supported by the hole 22c of the flat surface portion 22b and the hole 52b of the spacer 52, as shown in FIGS. In this way, the mount receiving lever 51 is biased in the direction in which the tongue piece 51b removes the dust bag 100.

  FIG. 15 is a front view of the dust collection box 21 according to the embodiment of the present invention in a state where the dust collection bag 100 is not attached, and FIG. 16 is a right side view of FIG. As shown in FIGS. 15 and 16, the dust leakage prevention shutter stopper 53 is urged counterclockwise in FIG. 16 (FIG. 12B) by the torsion spring 54, so that the dust leakage prevention shutter stopper 53 is 16 rotates counterclockwise in FIG. 16 about the shaft 51c of the mount receiving lever 51, and stops at a position where the protruding piece 53b of the dust leakage prevention shutter stopper 53 is in contact with the front surface portion of the dust collection box main body portion 22. . At this time, as shown in FIG. 15, the protruding piece 53 b is disposed within the movable range of the dust leakage prevention shutter 41, so that the dust leakage prevention shutter 41 cannot fully open the dust collection box suction port 25.

  In a state where the dust collection bag 100 is attached to the dust collection box 21, the dust leakage prevention shutter stopper 53 rotates around the shaft 51c of the mount receiving lever 51 in the clockwise direction in FIG. 16 (FIG. 12B), The protrusion 53b of the dust leakage prevention shutter stopper 53 stops at the position shown in FIG. At this time, since the protruding piece 53b is disposed outside the movable range of the dust leakage prevention shutter 41, the dust leakage prevention shutter 41 can open the dust collection box suction port 25.

  FIG. 17 is an enlarged view of a main part when viewed from the front side of the dust collection box of the dust bag release button part 60 according to the embodiment of the present invention. FIG. 18 is a left side cross-sectional view of the dust bag release button portion 60. FIG. 19 is a rear view of the dust bag release button unit 60. Hereinafter, the dust bag release button portion 60 will be described with reference to FIG. 8 and FIGS. 17 to 19.

  The dust bag release button portion 60 includes a locking member 61, a support piece 62, an elastic body 63, and the like. The locking member 61 is a substantially rectangular flat plate, and a convex portion serving as a release button 61a is formed at one end in the longitudinal direction, and the mount 101 of the dust bag 100 is locked at the other end. A locking portion 61b is formed. Support shafts 61c are formed on both sides in the longitudinal direction. An opening 22d is formed on the front surface of the dust collection box body 22 above the dust leakage prevention shutter 40, and protrudes to the front side of the dust collection box body 22 on both sides of the opening 22d. The support piece 62 is provided.

  Each support piece 62 is formed with a hole 62a. A support shaft 61c is inserted into the hole 62a, and the locking member 61 is rotatably provided. At this time, in the locking member 61, the release button portion 61a protrudes to the front side of the dust collection box main body portion 22, and the locking portion 62b protrudes to the rear surface side of the dust collection box main body portion 22 through the opening 22d. It has become. An elastic body 63 is attached to the locking member 61, and the locking member 61 is urged by the elastic body 63 to a posture for locking the mount (the posture shown in FIGS. 18 and 19). .

  Further, the locking member 61 is provided with a protrusion 61d below the release button portion 61a (the opposite surface of the release button portion 61a). As will be described later, when the dust collection bag 100 is attached to and removed from the dust collection box 21, the release button portion 61a is pushed. However, as shown in FIGS. 8 and 17, in the state where the dust leakage prevention shutter portion 40 opens the dust collection box suction port 25, the dust leakage prevention shutter 41 and the protrusion 61d interfere even if the release button portion 61a is pressed, The dust collection bag 100 cannot be removed from the dust collection box 21.

  Next, a process for attaching and removing the dust bag 100 to the dust collection box 21 and a process for housing the dust collection box 21 in the dust collection chamber 20 will be described.

  To attach the dust bag 100 in the dust box 21, first, the open / close button of the dust box 21 is pushed to open the dust box lid 23, and the release button 61 a of the dust bag release button 60 is pushed. By pushing the release button portion 61a, the locking member 61 rotates about the support shaft 61c, and the locking portion 61b is lifted upward. Thereafter, the lower part of the mount 101 of the dust bag 100 is engaged with a recess 22e (FIG. 18) formed in front of the lower surface inside the dust box main body part 22. By releasing the release button portion 61a, the upper portion of the mount 101 is locked to the locking portion 61b, and the dust bag 100 is attached in the dust collection box (FIG. 18). At this time, the opening of the mount 101 is positioned to face the dust collection box suction port 25. Further, the tongue piece 51 b of the dust leakage prevention shutter stopper portion 50 is sandwiched between the front inner wall of the dust collection box main body portion 22 and the mount 101 of the dust collection bag 100. Finally, the dust collection box cover 23 is closed.

  In order to remove the dust bag 100 from the dust box 21, first, the dust box 21 is opened by pressing the open / close button of the dust box 21. The dust collection bag 100 is removed by pressing the release button portion 61 a of the dust collection bag release button portion 60. At this time, since the tongue piece 51b of the dust leakage prevention shutter stopper portion 50 is biased in the direction to remove the dust bag 100, the tongue piece 51b pushes out the mount 101, and the dust bag 100 can be easily removed. .

FIG. 20 is a perspective view of the cleaner body 1 according to the embodiment of the present invention with the top cover 5 removed. 21 to 24 are front views in a state where the upper case 3 of the cleaner body 1 is removed, and are process diagrams illustrating a process of housing the dust collection box 21 in the dust collection chamber 20.
As shown in FIG. 20, a shutter guide portion 43 that guides the dust leakage prevention shutter 41 is provided on the front surface portion of the dust collection chamber 20. A convex portion 43a is provided on the upper surface portion of the shutter guide portion.

  As shown in FIG. 21, the dust leakage prevention shutter 41 is provided with a rib 41 b extending in the vertical direction in a state where the dust leakage prevention shutter 41 closes the dust collection box suction port 25 at a substantially central portion. A rib 41c is provided on the right peripheral edge of the dust leakage prevention shutter 41 so as to be continuous with both ends of the rib 41b. Further, a rib 41d that extends slightly downward from the center of the rib 41b and obliquely downward to the right is provided so as to be continuous with the rib 41b and the rib 41c. The height of the rib 41d is higher than that of the rib 41b or the rib 41c.

  When insertion of the dust collection box 21 into the dust collection chamber 20 is started, the convex portion 43 a of the shutter guide portion 43 comes into contact with the rib 41 d of the dust leakage prevention shutter 41. If the dust collection box 21 is inserted in this state, the dust leakage prevention shutter 41 starts to open the dust collection box suction port 25 while the rib 41d slides on the upper end of the convex portion 43a as shown in FIG.

  When the insertion of the dust collection box 21 is further advanced, as shown in FIG. 23, the dust leakage prevention shutter 41 continues to open the dust collection box suction opening 25, and the joint between the rib 41b and the rib 41c of the dust leakage prevention shutter 41 is the shutter. It abuts on the upper surface portion of the guide portion 43. At this time, if the dust collection bag 100 is not mounted in the dust collection box 21, the protrusion 53b of the dust leakage prevention shutter stopper 50 is disposed within the movable range of the dust leakage prevention shutter 41 as described above. Therefore, the dust leakage prevention shutter 41 cannot open the dust collection box suction port 25 completely. That is, the dust collection box 21 cannot be accommodated in the dust collection chamber 20, and it can be noticed that the dust collection bag 100 is forgotten to be installed in the dust collection box 21 at an early stage.

  When the dust collection box 21 is further inserted, the dust leakage prevention shutter 41 opens the dust collection box suction opening 25 while the joint portion between the rib 41b and the rib 41c slides on the upper surface portion of the shutter guide portion 43. Then, as shown in FIG. 24, the dust leakage prevention shutter 41 completely opens the dust collection box suction port 25, and the dust collection box 21 is accommodated in the dust collection chamber 20. In a state in which the dust collection box 21 is housed in the dust collection chamber 20, the packing (not shown) provided in the main body suction port 8 and the packing (not shown) provided in the electric blower suction port 71, Airtightness is maintained between the suction port 8 and the dust collection box suction port 25 and between the dust collection box exhaust port 27 and the electric blower suction port 71, respectively. That is, the main body suction port 8, the dust collection box 21, and the electric blower chamber 70 form a series of air paths having airtightness. Further, in the state where the dust collection box 21 is accommodated in the dust collection chamber 20, the dust leakage prevention shutter 41 completely opens the dust collection box suction port 25, so that even if the release button portion 61a is pressed as described above. The dust leakage prevention shutter 41 and the protrusion 61 d interfere with each other, and the dust collection bag 100 cannot be removed from the dust collection box 21.

  FIG. 25 is a cross-sectional view of the cleaner body 1 according to the embodiment of the present invention. FIG. 26 is a rear longitudinal sectional view of the dust collection box 21. FIG. 27 is a cross-sectional view of the dust collection box 21 housed in the dust collection chamber 20 in the cleaner body 1. The air flow in the cleaner body 1 and the dust collection box 21 will be described with reference to these drawings.

  For cleaning, when the user drives the electric blower 72 to generate intake air, for example, dust on the floor surface is removed by the intake air through the inlet body 95, the extension pipe 94 and the hose 91. Aspirate into. As shown in FIG. 25, the air containing dust is sucked into the cleaner main body 1 from the main body suction port 8. The air that has passed through the main body suction port 8 flows into the dust collection bag 100 (two-dot chain line shown in FIG. 25) mounted in the dust collection box 21 via the dust collection box suction port 25. The air flowing into the dust bag 100 is collected in the process of passing through the dust bag 100 and is exhausted from the dust box exhaust port 27. The exhausted air sequentially passes through the electric blower suction port 71, the electric blower 72, and the main body exhaust port 14, and is exhausted to the outside of the cleaner body 1.

  When attention is paid to the air flow in the dust collection box 21, the air immediately after the start of cleaning passes through an air passage that flows directly from the dust collection box suction port 25 having the smallest ventilation resistance to the dust collection box exhaust port 27. Thereafter, when dust accumulates in a region facing the dust collection box exhaust port 27 of the dust collection bag, the air passes through a portion having a low ventilation resistance, that is, a side surface portion, an upper surface portion, or a lower surface portion in the dust collection box 21. It tends to flow to the dust collection box exhaust port 27. At this time, if the dust collection bag 100 comes into close contact with the inner wall of the dust collection box 21, air will not flow, and the suction force of the vacuum cleaner will decrease.

  However, in the present embodiment, the ridges 30 and the ribs 31 provided on the inner wall of the dust collection box 21 collect dust from the side surface and the bottom surface in the dust collection box 21 as shown in FIGS. An air passage (hereinafter referred to as a bypass air passage 110) through which air flows to the box exhaust port 27 is secured, and a reduction in suction force of the vacuum cleaner is prevented.

  That is, since the protrusion 30 is provided from the front part to the side part of the inner wall of the dust collection box main body 22, the dust collection bag 100 is in close contact with the inner wall of the dust collection box main body 22 by the protrusion 30. It is preventing. In addition, since a plurality of ridges 30 are provided, the load applied to the location where the ridges 30 come into contact with the dust bag 100 is dispersed, and the dust bag 100 is prevented from being damaged. And the space formed by the protrusion 30 provided from the front part of this dust collection box main-body part 22 inner wall part to both side parts and the dust collection bag 100 becomes the bypass air path 110a. Since the rib 31 a is provided on the lower surface portion of the inner wall of the dust collection box main body 22, the rib 31 a prevents the dust collection bag 100 from coming into close contact with the inner wall of the dust collection box main body 22. Further, since a plurality of ribs 31a are provided, the load applied to the location where the ribs 31a abut against the dust bag 100 is dispersed, and the dust bag 100 is prevented from being damaged. The space formed by the dust collection box main body 22 inner wall, the rib 31a provided on the lower surface of the dust collection box main body 22 inner wall, and the dust collection bag 100 is a bypass air passage 110b.

  Since the rib 31b is provided on the inner wall other than the concave portion 26 on the rear surface portion of the dust collection box lid portion 23, the dust collection bag 100 adheres to the inner wall other than the concave portion 26 on the rear surface portion of the dust collection box lid portion 23 by the rib 31b. To prevent it. Further, since a plurality of ribs 31b are provided, the load applied to the location where the rib 31b contacts the dust bag 100 is dispersed, and the dust bag 100 is prevented from being damaged. And the space formed by the inner wall other than the recessed part 26 of this dust collection box cover part 23 rear surface part, the rib 31b provided in the inner wall other than the recessed part 26 of the dust collection box cover part 23 rear surface, and the dust collection bag 100 is formed. A bypass air passage 110c is provided. Similarly, the rib 28b of the filter cover 28a provided in the concave portion 26 on the rear surface portion of the dust collection box lid portion 23 also ensures that the dust collection bag 100 adheres to the inner wall of the concave portion 26 on the rear surface portion of the dust collection box lid portion 23. Prevent and form a bypass air passage.

  The air that has flowed to the side surface in the dust collection box 21 flows through the bypass air passage 100a to the bypass air passage 100c. The air that has flowed to the lower surface in the dust collection box 21 flows to the bypass air passage 100c through the bypass air passage 100b. Part of the air flowing into the bypass air passage 100c flows along the rib 31b and the rib 28b and is exhausted from the dust collection box exhaust port 27. Another part of the air flowing into the bypass air passage 100c flows upward or downward through the notch 31c provided in the rib 31b so as to pass through the air passage with less ventilation resistance. It flows along 31b and the rib 28b, and is exhausted from the dust collection box exhaust port 27.

  In the present embodiment, a plurality of protrusions 30, ribs 31a, and ribs 31b are provided, but it is possible to implement the present invention with only one. In the present embodiment, a plurality of protrusions 30, ribs 31 a, and ribs 31 b are provided to prevent damage to the dust bag 100, and the interval between adjacent protrusions 30 and the interval between adjacent ribs 31 a are provided. The distance between the adjacent ribs 31b is about 30 mm, and this distance is preferably 10 mm to 50 mm in consideration of prevention of breakage of the dust bag 100 and ventilation resistance. Moreover, in this Embodiment, although the protrusion 30 and the rib 31 are not provided in the upper surface part of the dust collection box, of course, you may provide the protrusion 30 and the rib 31 in the upper surface part of a dust collection box. In this embodiment, one notch 31c is provided in one rib 31b, but a plurality of notches 31c may be provided in one rib 31b. Instead of the notch 31c, for example, an opening may be provided in the rib 31b.

  In the present embodiment, the notch 31c is provided only in the rib 31b, but the notch 31c may be provided in other ribs. The protrusion 30 may be provided with a recessed portion. For example, as shown in FIG. 28, a notch 31c may also be provided in the rib 31a provided on the lower surface portion of the inner wall of the dust collection box main body 22. The air flowing through the lower surface of the dust collection box 21 can flow rightward or leftward through the notch 31c provided in the rib 31a in order to pass through the air passage with less ventilation resistance. The reduction of the suction power of the machine can be further prevented.

  Further, the notches 31c may be provided in the ribs 31 so that the positions of the notches 31c provided in the adjacent ribs 31 are staggered. For example, as shown in FIG. 29, the rib 31a is cut into the rib 31a so that the positions of the notches 31c provided in the adjacent rib 31a are alternated with the rib 31a provided in the lower surface of the inner wall of the dust collection box main body 22. A notch 31c may be provided. Since the air flowing through the adjacent cutouts 31c does not collide with each other and the ventilation resistance is reduced, it is possible to further prevent the suction force of the vacuum cleaner from being lowered.

  In the vacuum cleaner thus configured, the dust collection bag 100 is provided in the dust collection box 21 having airtightness, and the main body suction port 8, the dust collection box 21 and the electric blower chamber 70 are series of airtight. Since it formed in the air path, the vacuum cleaner which the dust collection chamber 20 does not get dirty can be obtained. Further, since the dust collection box 21 is detachably provided in the dust collection chamber 20, the dust collection box 21 can be easily cleaned even if the dust collection box 21 is contaminated with dust or the like.

  Since the protrusions 30 and the ribs 31 are provided on the inner wall of the dust collection box 21, an air passage for intake air can be secured even if the dust collection bag expands in the dust collection box 21, and the dust collection bag 100 is airtight. It is possible to prevent a reduction in the suction force that is a concern when mounted in a dust collection box 21 having a certain size. Further, since the suction force does not decrease, the dust in the dust bag 100 can be compressed by the intake air, and the dust collection capacity can be improved.

  The protrusions 30 and ribs 31 (ribs 31 a and ribs 31 b) provided on the inner wall of the dust collection box 21 also serve as a reinforcing member for the dust collection box 21. Therefore, even when the inside of the dust collection box 21 is in a high vacuum, such as when the inside of the dust collection bag 100 is filled with dust, the deformation of the dust collection box 21 is prevented, and the dust collection box body 22 and the dust collection box are prevented. The airtightness between the lid 23, between the main body suction port 8 and the dust collection box suction port 25, and between the dust collection box exhaust port 27 and the electric blower suction port 71 can be maintained, and the dust collection chamber Dust can be prevented from leaking into the inside 20.

  In addition, since a plurality of protrusions 30 and ribs 31 are provided on one surface, the load applied to the portions where the protrusions 30 and ribs 31 abut against the dust bag 100 is dispersed, and damage to the dust bag 100 is prevented. can do.

  Since the notch 31c is provided in the rib 31 (rib 31b), the air can flow through the notch 31c and the air passage having a smaller ventilation resistance, and the suction force of the electric vacuum cleaner can be further prevented from being lowered. Moreover, the fall of the attraction | suction force of a vacuum cleaner can further be prevented by providing so that the position of the notch 31c provided in the adjacent rib 31 (rib 31a) may become alternate. Further, for example, by providing a plurality of notches 31c in one rib 31, it is possible to effectively prevent a reduction in suction force of the vacuum cleaner.

  Since the concave portion 26 slightly wider than the diameter of the electric blower suction port 71 is provided in the vertical direction on the rear surface portion of the dust collection box lid portion 23, when the concave portion 26 accommodates the dust collection box 21 in the dust collection chamber 20. The positioning of the main body suction port 8 and the dust collection box suction port 25 and the positioning of the dust collection box exhaust port 27 can be facilitated. Moreover, since the rib 31b is provided in locations other than the recessed part 26 of the dust collection box cover part 23 rear surface part, this location becomes a bypass air path and can prevent the fall of the suction power of a vacuum cleaner. Further, the recess 26 increases the strength of the dust collection box 21, so that even when the dust collection box 21 is in a high vacuum due to the inside of the dust collection bag 100 being filled with dust or the like, Deformation is prevented, between the dust collection box main body 22 and the dust collection box lid 23, between the main body suction port 8 and the dust collection box suction port 25, and between the dust collection box exhaust port 27 and the electric blower suction port 71. Airtightness can be maintained, and dust can be prevented from leaking into the dust collection chamber 20.

  In a state where the dust collection bag 100 is not mounted in the dust collection box 21, the protrusion 53 b of the dust leak prevention shutter stopper portion 50 is disposed within the movable range of the dust leak prevention shutter 41. The shutter 41 cannot fully open the dust collection box suction port 25, that is, the dust collection box 21 cannot be accommodated in the dust collection chamber 20, and notices that the dust collection bag 100 is forgotten to be installed in the dust collection box 21 at an early stage. be able to. For this reason, without forgetting to attach the dust bag 100 in the dust box 21, the electric vacuum cleaner can always be used safely and safely.

  Further, since the tongue piece 51b of the dust leakage prevention shutter stopper portion 50 is biased in the direction of removing the dust bag 100, the tongue piece 51b pushes out the mount 101, and the dust bag 100 can be easily removed. That is, since the detachability of the dust bag 100 is remarkably improved, the dust bag 100 can be thrown out smoothly, and the dust bag can be reliably discarded.

  In a state where the dust collection box 21 is accommodated in the dust collection chamber 20, the dust leakage prevention shutter 41 and the protrusion 61 d interfere even if the release button portion 61 a is pressed, and the dust collection bag 100 can be removed from the dust collection box 21. Therefore, the dust collection bag 100 is not detached from the dust collection box 21 due to mischief or misoperation of the child, and the cleaner can be used with confidence. Moreover, this effect demonstrates the effect excellent in store display.

It is a perspective view showing the whole vacuum cleaner composition concerning an embodiment of the invention. It is a perspective view of the vacuum cleaner main body 1 of the electric vacuum cleaner which concerns on embodiment of this invention. FIG. 3 is a side view of a state in which the upper lid 5 of FIG. 2 is closed. FIG. 3 is a side view of a state where an upper lid 5 of FIG. 2 is opened. It is a longitudinal cross-sectional view of FIG. FIG. 5 is a perspective view of a state where the dust collection box 21 of FIG. 4 is not accommodated in the dust collection chamber 20. It is AA sectional drawing of FIG. It is a front side perspective view of the state where dust collection box cover part 23 of dust collection box 21 concerning an embodiment of the invention was closed. It is a rear surface side perspective view in the state where dust collection box lid part 23 of dust collection box 21 concerning an embodiment of the invention was closed. It is a rear surface side perspective view in the state where dust collection box lid part 23 of dust collection box 21 concerning an embodiment of the invention was opened. It is a principal part disassembled perspective view of the dust leak prevention shutter stopper part 50 which concerns on embodiment of this invention. It is a principal part enlarged view of the dust leak prevention shutter stopper part 50 which concerns on embodiment of this invention, (a) is a front view, (b) is a right view. It is a rear surface side perspective view in the state where dust collection box lid part 23 concerning an embodiment of the invention was opened. It is a longitudinal cross-sectional view of FIG. It is a front view of the state where dust collection bag 100 of dust collection box 21 concerning an embodiment of the invention is not equipped. FIG. 16 is a right side view of FIG. 15. It is a principal part enlarged view of the dust collection bag cancellation | release button part 60 which concerns on embodiment of this invention. It is left side sectional drawing of the dust bag release button part 60 which concerns on embodiment of this invention. It is a rear view of the dust collection bag cancellation | release button part 60 which concerns on embodiment of this invention. It is a perspective view of the state where the upper cover 5 of the cleaner body 1 concerning an embodiment of the invention was removed. FIG. 4 is a process diagram illustrating a process of accommodating the dust collection box 21 in the dust collection chamber 20. FIG. 4 is a process diagram illustrating a process of accommodating the dust collection box 21 in the dust collection chamber 20. FIG. 4 is a process diagram illustrating a process of accommodating the dust collection box 21 in the dust collection chamber 20. FIG. 4 is a process diagram illustrating a process of accommodating the dust collection box 21 in the dust collection chamber 20. It is a cross-sectional view of the cleaner body 1 according to the embodiment of the present invention. It is a back longitudinal section of dust collection box 21 concerning an embodiment of the invention. It is a transverse cross section of dust collection box 21 concerning an embodiment of the invention. It is a perspective view of dust collection box 21 at the time of providing a notch in rib 31a. It is a perspective view of the dust collection box 21 when notches are provided alternately in the ribs 31a.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body, 2 Main body part, 3 Upper case, 4 Lower case, 5 Upper cover, 7 Button, 8 Main body suction port, 10 Handle member, 11 Hose connection port, 12 Handle, 13 Extension part, 14 Main body exhaust port, 15 code, 16 wheels, 17 partition, 20 dust collection chamber, 21 dust collection box, 22 dust collection box body, 22a recess, 22b flat surface, 22c hole, 22d opening, 22e recess, 23 dust collection box lid, 24 Handle part, 24a Hinge, 25 Dust collection box suction port, 26 Recess, 27 Dust collection box exhaust port, 28 Filter, 28a Filter cover, 28b Rib, 29 Hinge, 30 Projection, 31 Rib, 31c Notch, 32 Open / close Button, 40 Dust leak prevention shutter part, 41 Dust leak prevention shutter, 41a Tongue piece, 41b Rib, 4 1c rib, 41d rib, 42 Dust leak prevention shutter hinge, 43 Shutter guide part, 43a convex part, 50 dust leak prevention shutter stopper part, 51 mount receiving lever, 51a flat plate part, 51b tongue piece, 51c shaft, 52 spacer, 52a convex part, 52b hole, 53 dust leakage prevention shutter stopper, 53a flat plate part, 53b protrusion, 53c hole, 54 spring, 60 dust bag release button part, 61 locking member, 61a release button part, 61b locking part , 61c support shaft, 61d protrusion, 62 support piece, 63 elastic body, 70 electric blower chamber, 71 electric blower inlet, 72 electric blower, 73 upper cover, 80 cord reel, 91 hose, 92 hand operation switch, 93 hand grip , 94 Extension pipe, 95 Suction port body, 100 Dust collection bag, 101 Mount , 110 Bypass air passage.

Claims (11)

The main body inlet,
A dust collection chamber communicating with the main body suction port;
A dust collection box detachably accommodated in the dust collection chamber;
An electric blower chamber that houses an electric blower that communicates with the dust collection chamber through an electric blower suction port and generates intake air;
In the vacuum cleaner with
The dust collection box has an airtight box shape in which a dust collection box suction port is formed at a position facing the main body suction port, and a dust collection box exhaust port is formed at a position facing the electric blower suction port. Consists of
Inside the dust collection box, a dust collection bag for collecting dust sucked from the dust collection box suction port can be detachably attached,
The main body suction port, the dust collection box and the electric blower chamber form a series of air passages having airtightness,
The dust collection box is provided with a protrusion on the inner wall of at least one of the surfaces adjacent to the surface on which the dust collection box exhaust port is formed ,
The dust collection box is
When the dust collection box is accommodated in the dust collection chamber, the dust collection box suction port is opened. When the dust collection box is not accommodated in the dust collection chamber, the dust collection box suction port is opened. Close dust leak prevention shutter part,
In a state where the dust collection bag is rotatably provided and the dust collection bag is mounted inside the dust collection box, one end of the dust collection prevention shutter stopper portion sandwiched between the dust collection bag and the dust collection box,
Have
The other end of the dust leakage prevention shutter stopper is
In the state where the dust bag is not mounted inside the dust collection box, it is located within the movable range of the dust leakage prevention shutter part,
In the state where the dust collection bag is mounted inside the dust collection box, one end of the dust leakage prevention shutter stopper portion is sandwiched between the dust collection bag and the dust collection box, and the dust leakage prevention shutter portion A vacuum cleaner characterized by being moved out of the movable range .   The vacuum cleaner according to claim 1, wherein the protrusion is provided on an inner wall of the entire surface of the dust collection box. The dust collection box is
The surface on which the dust collection box exhaust port is formed is provided with a recess serving as a guide when the dust collection box is accommodated in the dust collection chamber,
The vacuum cleaner according to claim 1 or 2, wherein the projection is provided at a place other than the concave portion on a surface on which the dust collection box exhaust port is formed. On the surface where the protrusion is provided,
The vacuum cleaner according to claim 1, wherein a plurality of the protrusions are provided.   The vacuum cleaner according to any one of claims 1 to 4, wherein the protrusion is a protrusion or a rib.   6. The electric vacuum cleaner according to claim 5, wherein a ventilation portion for allowing intake air to pass through the ridges or the ribs is provided.   The vacuum cleaner according to claim 6, wherein a plurality of the ventilation portions are provided on the protrusions or the ribs.   The vacuum cleaner according to claim 6 or 7, wherein positions of the ventilation portions provided in the adjacent protrusions or the ribs are staggered.   The vacuum cleaner according to any one of claims 6 to 8, wherein the ventilation portion is at least one of a recessed portion and an opening. The dust leakage prevention shutter stopper is
The vacuum cleaner according to any one of claims 1 to 9, wherein the dust bag is urged in a direction away from the dust box. The dust collection box has a dust collection bag release button for releasing the dust collection bag;
The dust bag release button has a protrusion,
The dust bag release button is
When the dust leakage prevention shutter part is pressed in a state where the dust collection box suction port is opened, the protrusion and the dust leakage prevention shutter part interfere with each other,
The vacuum cleaner according to any one of claims 1 to 10, wherein the dust bag cannot be unmounted .

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