JP5868261B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner that can easily take out a dust bag that collects a large amount of dust and has improved suction force by a rectifying effect.

  As a conventional technique, in the vacuum cleaner described in Patent Document 1, a filter frame member that holds a filter that can be attached and detached from the dust bag side is provided in a dust collection chamber, and a convex portion and a lower body provided on the filter frame member are provided. An electric vacuum cleaner is described in which a dust collecting bag that collects dust can be easily taken out by locking with the provided opening and slidably moving the filter frame member up and down with respect to the dust collecting chamber. ing.

JP 2010-178936 A

  The vacuum cleaner described in Patent Document 1 is characterized in that the filter frame member slides in the vertical direction in conjunction with the dust collection bag when the dust collection bag that collects the dust is pulled out. Have. However, when a large amount of dust is collected in the dust collection bag, the filter frame member is pressed against the grid ribs on the electric blower side opening of the lower body by the dust collection bag, and is used for holding the filter provided on the filter frame member. A large force is applied to the sliding surface formed by a part or the whole of the ribs contacting the lattice ribs on the electric blower side of the lower main body. Due to the force applied to the sliding surface, a frictional force is generated on the sliding surface when the filter frame member slides in the vertical direction, and the dust bag cannot be easily taken out.

  In the present invention, when a large amount of dust is collected in the dust collection bag, the filter frame member is pressed against the grid-like ribs on the lower side of the electric blower by the dust collection bag, and a part of the filter holding rib or Taking out the dust collection bag even when a large amount of dust is collected by reducing the frictional force generated on the sliding surface, which is configured by contacting the grid rib on the lower side of the electric blower of the lower body. It aims to provide an easy vacuum cleaner.

In order to achieve the above object, a vacuum cleaner of the present invention includes a suction port, an extension tube and a hose through which dust sucked from the suction port passes, an upper body, and an open / close lid rotatable with respect to the upper body. A vacuum cleaner having a vacuum cleaner main body constituted by a lower main body, wherein the vacuum cleaner main body incorporates an electric blower that generates suction force, and a dust collection bag is detachably provided. has a dust collecting chamber, the opening communicating the electric blower and the dust collecting chamber is provided with a grid-like rib, the filter frame member between the lattice-shaped rib and the dust collecting chamber The filter frame member is slidable in a vertical direction, and the filter holding rib is configured to slide on a sliding surface formed on the dust collecting chamber side of the lattice-shaped rib, horizontal width of the filter holding rib of the filter frame members, the full In a direction Luther frame member is pressed against the grid-like ribs, broadly the dust collecting chamber side, and so narrowed by the grid-like rib side.

  According to the present invention, it is possible to provide an electric vacuum cleaner that can easily take out a dust bag even when a large amount of dust is sucked.

The perspective view of the vacuum cleaner main body of Example 1 (state which removed the dust collection bag and the filter) The whole external appearance figure of the vacuum cleaner of Example 1. FIG. The perspective view of the vacuum cleaner main body of Example 1 (state in which the dust bag is inflated). Sectional drawing of the vacuum cleaner main body of Example 1 (state which the dust collection bag swelled). The perspective view of the vacuum cleaner main body of Example 1 (state which has taken out the inflated dust bag). The side view of the vacuum cleaner main body of Example 1 (state which has taken out the swelled dust bag). The side view of the vacuum cleaner main body of Example 1 (state which took out the inflated dust bag). Sectional drawing (state which has taken out the inflated dust bag) of the vacuum cleaner main body of Example 1. FIG. FIG. 3 is an enlarged view of the vicinity of a dust collection chamber of the cleaner body of the first embodiment. Sectional drawing of the cleaner body of Example 1 (state before a dust bag is inflated). The P section enlarged view of FIG. 8, and its AA sectional drawing. Graph of comparison of load-friction force between conventional technology and developed technology. The perspective view which looked at the cleaner body of Example 1 from the lower part. The expanded sectional view of the rib for filter holding in the vacuum cleaner of Example 2. FIG. Sectional drawing of the horizontal direction of the rib for filter holding | maintenance in the vacuum cleaner of Example 2. FIG. Sectional drawing of the perpendicular direction of the rib for filter holding | maintenance in the vacuum cleaner of Example 2. FIG.

First, the gist of the present invention will be described.
The vacuum cleaner of the present invention has a large amount of dust in the dust collection bag by providing a slope on the side so that the width of the filter holding rib provided on the filter frame member is narrower on the electric blower side than on the dust collection chamber side. When dust is collected, the filter frame member is pressed against the grid ribs on the opening of the lower fan's electric blower by the dust bag, and part or all of the filter holding ribs are on the grid of the lower fan's electric blower side. It is characterized in that the area of the sliding surface constituted by contacting with is reduced.

  As a result, when a large amount of dust is collected in the prior art, the filter frame member is pressed against the grid-like ribs on the electric blower side opening of the lower main body by the dust collecting bag, and a part or the whole of the filter holding ribs is lowered. A large force is applied to the sliding surface configured by contact with the grid ribs of the main body, and a frictional force is generated on the sliding surface when the filter frame member slides in the vertical direction due to the force on the sliding surface. Although it is not easy to take out the dust bag, the filter holding rib is provided with a gradient on the side so that the width of the filter holding rib provided on the filter frame member is narrower on the side of the electric fan than on the dust collecting chamber side. When a large amount of dust is collected by reducing the frictional force by reducing the area of the sliding surface that is configured by contacting part or all of the ribs to the grid ribs on the lower body's electric blower side Dust collection Take-out is easy.

  In addition, the intake air rectified by providing a gradient on the side surface so that the width of the filter holding rib of the filter frame member is narrower on the side of the electric blower than on the dust collection chamber side, and the gradient of each filter holding rib on the electric blower By taking a larger outside than the center side of the intake air inlet, it is possible to efficiently flow the rectified intake air into the center of the intake air inlet of the electric blower to improve the suction efficiency and increase the suction force.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 2 is an overall external view of the electric vacuum cleaner according to the first embodiment.
Dust sucked from the suction port 201 passes through the extension pipe 202 and the hose 203 and is collected in the cleaner body 204.

  FIG. 3 is a perspective view of the cleaner body 204. The vacuum cleaner main body 204 includes an upper main body 301 and a lower main body 302 and includes an electric blower 401 inside. In addition, an opening / closing lid 303 that is rotatable with respect to the upper main body 301 is provided, and a dust collection chamber 304 is configured by the partitioned portion of the lower main body 302 and the opening / closing lid 303. The dust collection chamber 304 is provided with a detachable dust collection bag 305, and a filter frame member 306 provided with a filter 403 between the electric blower and the dust collection bag 305 and in the dust collection chamber for preventing dust suction to the electric blower. Is provided.

  FIG. 4 is a cross-sectional view of the cleaner body 204. As shown here, a filter frame member 306 holding a filter 403 is provided between the electric blower 401 and the dust bag 305, and the filter 403 is detachably held from the dust bag 305 side. When the electric vacuum cleaner of the present embodiment is operated, the electric blower 401 generates a suction force and sucks air from the opening 402 communicated with the dust collection chamber 304. The dust collection bag 305 is inflated as shown in FIG. 4 by the dust-containing air flowing from the hose connection port 404. When the dust collection bag 305 expands, it sticks to the wall inside the dust collection chamber 304, and when the amount of dust increases, the flow of air is hindered. In the first embodiment, the channel securing member 405 is provided so that the dust collection bag 305 does not stick to the inside of the opening / closing lid 303, and the space 406 is maintained between the opening / closing lid 303 and the dust collection bag 305 to reduce the suction force. Is preventing. Further, the filter frame member 306 keeps the space between the dust bag 305 and the opening 402 and prevents the suction force from decreasing.

  The filter frame member 306 will be described with reference to FIGS. 1, 5, 6, 7, and 8. FIG. 1 shows a case where the dust collection bag 305 and the filter 403 are not present with the opening / closing lid 303 opened. The filter frame member 306 can slide up and down, and FIG. 1 shows a state in which the filter frame member 306 is located at the upper end. The filter frame member 306 is normally located at the lower end, but the user can easily remove the filter 403 by pulling it upward.

  FIG. 5 shows a state in which the dust collection bag 305 that has sucked dust is pulled out. When the user pulls out the dust bag 305 when replacing it in this way, the filter frame member 306 slides upward, so that it can be pulled out together with the dust bag 305 and the dust bag 305 can be easily replaced.

  FIG. 6 is a side view of the dust bag 305 pulled out, and it can be seen that the filter frame member 306 and the dust bag 305 are drawn upward together. Thereafter, as shown in FIG. 7, the dust bag 305 can be easily removed, so that the dust bag 305 can be easily replaced.

  FIG. 8 is a cross-sectional view of the dust bag 305 pulled out. As shown in FIG. 8, since almost half of the dust collection bag 305 comes out of the dust collection chamber 304 by sliding of the filter frame member 306, the dust collection bag 305 can be easily removed with one hand.

  FIG. 9 shows a state where the filter 403 (not shown) is removed from the filter holding rib 902 after the dust bag 305 is replaced. When the opening / closing lid 303 is rotated from the open state while the filter frame member 306 is slid and positioned at the upper part, the filter frame member 306 is pushed by the opening / closing lid 303 and slides downward as shown in FIG. Since the opening / closing lid 303 is naturally guided to the lower end position by the rotation operation, the user does not need to lower the filter frame member 306 downward. In addition, as shown in FIG. 4, when the opening / closing lid 303 is closed, the upper part of the filter frame member 306 is pressed by the opening / closing lid 303, so that the position of the filter 403 can be set reliably, so that dust is sucked into the electric blower 401. Can be prevented.

However, in the prior art, as shown in the upper diagram in FIG. 11 in which the portion P in FIG. 8 is enlarged and the AA sectional view (A) in the upper diagram, when the dust collection bag 305 sucks a large amount of dust, The filter frame member 306 is pressed against the grid-like ribs 407 of the opening 402 on the electric blower 401 side, and part or all of the filter holding ribs 902 provided on the filter frame member 306 are on the electric blower 401 side of the lower main body 302. A large force is applied to the sliding surface 1101 formed on the side of the dust collection chamber 304 of the lattice rib 407. The force on the sliding surface 1101 causes a frictional force on the sliding surface 1101 when the filter frame member 306 slides in the vertical direction, making it difficult to take out the dust collection bag 305.

Therefore, in this embodiment, the width of the filter holding rib 902 provided on the filter frame member 306 is electric as compared with the dust collection chamber 304 side, as shown in the AA sectional view (B) of FIG. A slope was provided on the side surface so that the blower 401 side became narrower.

  In general, as shown in FIG. 12, when the substance A 1201 and the substance B 1202 come into contact with each other on the contact surface 1203, the smaller the area of the contact surface 1203, the shorter the linear portion 1204 of the load-friction force line, and the nonlinear portion ( (Small contact area) 1205, the frictional force gradually increases. As a result, it is known that the increase amount of the frictional force is reduced by the difference 1207 between the linear portion of the nonlinear portion (small contact area) 1205 and the nonlinear portion (large contact area) 1206. Utilizing this effect, when a large amount of dust is sucked, the filter frame member 306 is pressed against the lattice rib 407 of the opening 402 on the electric blower 401 side of the lower main body 302 by the dust collection bag 305, and the filter frame member 306. Friction force is obtained by reducing the area of the sliding surface 1101 formed by a part or the whole of the filter holding rib 902 provided on the lower surface 302 coming into contact with the grid rib 407 on the electric blower 401 side of the lower main body 302. Is reduced, and the dust bag 305 can be easily taken out.

  FIG. 13 shows a state in which the opening / closing lid 303 is partially closed. A flow path securing member 405 is provided inside the opening / closing lid 303 to prevent the dust bag 305 from inflating and sticking to the opening / closing lid 303 to ensure a flow path for the wind to the electric blower 401. Further, a plurality of opening / closing lid ribs 1301 are provided inside the opening / closing lid 303, and the lower air passage 1302 is formed because the dust collection bag 305 does not stick to the opening / closing lid 303 even when the dust collection bag 305 is inflated. Since the upper air passage 901 is open at the upper end of the filter frame member 306 shown in FIG. 9 at a position facing the above-described lower air passage 1302, the air passing through the inside of the opening / closing lid 303 is smoothly guided to the electric blower 401. .

  As described above, according to the first embodiment, the sliding surface that is a contact surface between the filter holding rib and the grid rib can be reduced while maintaining the strength required for the filter holding rib. Thus, it is possible to provide a vacuum cleaner that makes it easy to take out a dust bag even when dust is sucked into the bag.

  Next, the vacuum cleaner of Example 2 is demonstrated using FIGS. 14-16. Note that a description of points in common with the first embodiment will be omitted.

  In FIG. 14, the cross-sectional shape of the rib 902 for filter holding in the vacuum cleaner of Example 2 is expanded and represented. In the prior art shown in FIG. 11A, the width of the filter holding rib 902 is substantially equal on the dust collection chamber 304 side and the electric blower 401 side. The flow 1401 was not rectified, and a turbulent flow 1402 was generated, causing a reduction in suction force.

  On the other hand, in Example 2, as shown in FIG. 14A, by providing a gradient on the side surface such that the width of the filter holding rib 902 is narrower on the electric blower 401 side than on the dust collection chamber 304 side, While maintaining the required strength, the flow 1401 of the intake air can be rectified on the electric blower 401 side of the filter holding rib 902 to prevent the generation of the turbulent flow 1402 and prevent the suction force from decreasing.

  In FIG. 14A, the gradient is provided only on one side of the side surface of the filter holding rib 902 provided on the filter frame member 306. However, as shown in FIG. 14B, the gradient is provided on both sides of the side surface. Similar effects may be obtained.

  Further, in the prior art, after the passage of the intake air flow 1401 through the filter holding rib 902, the intake air route to the intake air inlet 1501 of the electric blower 401 is not taken into account, which causes a reduction in efficiency.

  However, as shown in the lower part of FIG. 15, in Example 2, the width of the filter holding rib 902 of the filter frame member 306 is inclined on the side surface so that the electric blower 401 side is narrower than the dust collection chamber 304 side. The rectified intake air efficiently flows into the center of the intake air inlet 1501 of the electric blower 401 by taking the gradient of each filter holding rib 902 larger than the center side of the suction port of the electric blower 401. It becomes possible to make it.

  As shown in FIG. 16, the filter holding rib 902 may have the same shape also in the lateral direction, and the effect can also be obtained.

  As described above, according to the second embodiment, the suction efficiency of the electric blower 401 can be increased in addition to the effects of the first embodiment.

201 Suction port 202 Extension tube 203 Hose 204 Vacuum cleaner main body 301 Upper main body 302 Lower main body 303 Opening and closing cover 304 Dust collection chamber 305 Dust collection bag 306 Filter frame member 401 Electric blower 402 Opening 403 Filter 404 Hose connection port 405 Flow path securing member 406 Space 407 Grid-like rib 901 Upper air passage 902 Filter holding rib 1101 Sliding surface 1201 Substance A
1202 Substance B
1203 Contact surface 1204 Linear portion 1205 Non-linear portion (small contact area)
1206 Non-linear part (large contact area)
1207 Linear portion difference 1301 Opening / closing lid rib 1302 Lower air passage 1401 Intake flow 1402 Turbulent flow 1501 Intake inlet of electric blower

Claims (3)

The mouthpiece,
An extension tube and a hose through which dust sucked from the suction port passes,
A vacuum cleaner having an upper body, an opening / closing lid rotatable with respect to the upper body, and a lower body, and a vacuum cleaner body,
The vacuum cleaner body has a built-in electric blower that generates a suction force, and has a dust collection chamber in which a dust collection bag is detachably provided.
The opening communicating the electric blower and the dust collecting chamber is provided with a grid-like ribs,
A filter frame member is provided between the dust collection chamber and the grid rib, the filter frame member is slidable in the vertical direction, and the filter holding rib is located on the dust collection chamber side of the grid rib. It is configured to slide on the formed sliding surface,
The horizontal width of the filter holding rib of the filter frame member is set to be wide on the dust collection chamber side and narrow on the grid rib side in the direction in which the filter frame member is pressed against the grid rib. A vacuum cleaner characterized by that. The vacuum cleaner according to claim 1, wherein
It said filter holding rib, vacuum cleaner, characterized in that a said by Uni gradient electric blower side is narrower than that of the dust collecting chamber side. The vacuum cleaner according to claim 2 ,
An electric vacuum cleaner characterized in that the gradient of the side surface of each of the filter holding ribs is larger on the outer side than the intake air inlet center side of the electric blower .