JP4262731B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention separates dust from a dust-containing air flow with a dust collection case provided in a vacuum cleaner body, and can easily discharge dust collected in the dust collection case and reduce airflow loss in the dust collection case. It is about a vacuum cleaner.

  A vacuum cleaner capable of easily discharging the dust collected in the dust collection case is described in, for example, Japanese Patent Laid-Open No. 2003-19094 (Patent Document 1).

  The electric vacuum cleaner disclosed in Patent Document 1 includes a dust collection container that can be attached to and detached from a main body case of the vacuum cleaner, and the dust collection container includes a filter at the top and a bottom lid that can be opened and closed at the bottom. Throw away the trash when the dust container is full of collected dust.

  Dust disposal is easily done by removing the dust container from the main body case, positioning the dust container on the bottom side of the dust container, and opening the bottom lid, so that the dust in the dust container is discarded in the garbage container. .

  Moreover, the vacuum cleaner which reduces ventilation loss in a dust collection case is described in Unexamined-Japanese-Patent No. 2004-180761 (patent document 2), for example.

  A vacuum cleaner disclosed in Patent Document 2 includes a dust separation unit that separates air and dust flowing through the air passage in the air passage from the suction port of the cleaner body to the intake port of the electric blower, and the separation unit. And a dust storage part for storing the dust separated in (1). An introduction raised portion is formed at one end in the width direction of the dust reservoir provided on the lower side of the dust separator, and the dust separator is provided with an air passage formation body and a guide portion. It has a separation opening that communicates and a filter attached to the opening, and one end defines a separation air passage that communicates with the suction port. The guide portion has an air blowing wall portion facing the other end opening of the separation air passage, and is provided obliquely across the introduction bulge portion and the other end opening, and communicates the air passage formation body and the dust storage portion. Yes.

Japanese Patent Laid-Open No. 2003-19094 JP 2004-180761 A

  In order to keep the electric blower exerting the specified suction force, it is necessary to throw away the dust accumulated in the dust collection container body after cleaning or periodically, and in this case, it can be easily thrown away from the container body without touching the dust. Is desirable for hygiene purposes.

  While the vacuum cleaner is in operation, light and fluffy fiber dust such as cotton dust tends to become a compressed mass due to the air flow passing through the dust collecting container. However, when the operation of the vacuum cleaner is stopped, the compressive force due to the air flow is lost, the compressed dust mass spreads, and the dust mass volume increases. For this reason, in the invention described in Patent Document 1, even if the discharge lid of the dust collecting container body is opened, a lump of dust may be caught inside the container body and the dust may not fall. In this case, it is necessary to scrape the dust caught inside the dust collecting container main body with a hand or a stick, which is not preferable because it is not a sanitary operation.

  In addition, as a device for reducing ventilation loss in the dust collection case, a configuration is proposed in which dust and air flow separated into a dust storage portion provided below the dust separation portion are introduced as in the invention described in Patent Document 2. However, since the air flow is bent, the air loss is increased, and it is difficult to improve the suction work rate.

  An object of the present invention is to solve the above-mentioned problems, and provides a vacuum cleaner that can easily and hygienically discharge dust that has been collected and has low airflow loss, that is, high suction work rate. There is.

  In order to achieve the above object, a feature of the present invention is that a vacuum cleaner comprising a vacuum cleaner body incorporating an electric blower and a dust collecting case detachably provided on the vacuum cleaner body, A dust storage means for storing dust is provided in the dust collection case, and the flow path constituted by the outside of the dust storage means and the inner wall of the dust collection case is configured to expand from the upstream side to the downstream side. It is in.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to discharge | emit the dust in a dust container easily and hygienically, a ventilation loss is small, and the vacuum cleaner of a high suction work rate can be provided.

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

  First, the outline of the electric vacuum cleaner will be described with reference to FIGS. 1 to 4. FIG. 1 is an external perspective view of a vacuum cleaner showing an embodiment of the present invention. FIG. 2 is a perspective view showing a state in which the upper cover of the cleaner body is opened. FIG. 3 is a perspective view showing a state where the upper cover of the cleaner body is opened and the dust collecting case 5 is removed. FIG. 3 is a perspective view showing a state where the upper cover of the cleaner body is opened and the dust collecting case 5 is removed. FIG. 4 is an external perspective view of the dust collection case 5 showing an embodiment of the present invention. As shown in FIGS. 1 and 2, the vacuum cleaner 1 in this embodiment includes a cleaner body 2, a hose 12, a hand operation tube 13, an expansion joint tube 14, and a suction port 15. The operation tube 13 is connected by a hose 12, and the suction port 15 is connected to the local operation tube 13 via an expansion / contraction joint tube 14. In addition, the hose 12 has the connection part 12a attached to the hose connection port part 10 of the cleaner body 2.

  The cleaner body 2 includes an electric blower (not shown) and a cord reel (not shown). By sucking the dust-containing air from the suction port 15 by the suction force when the electric blower is driven, the sucked dust-containing air is sucked into the cleaner body 2 via the expansion joint pipe 14, the hand operation pipe 13 and the hose 12, After collecting (collecting) dust in the dust collecting case 5, the air is exhausted outside the apparatus. The operation mode of the electric vacuum cleaner 1 can be switched by a switch 16 provided on the hand control tube 13.

  As shown in FIGS. 2 to 3, the vacuum cleaner body 2 has a dust collection case 5 in a dust collection case storage portion 9 formed in a recess of the upper body case 4 disposed between the lower body case 3 and the upper lid 8. It is detachably attached. The upper lid 8 is attached to the upper rear portion of the upper body case 4 so as to be able to turn. As shown in FIG. 2, the dust collection case 5 is taken in and out by opening the upper lid 8, and the upper lid 8 is closed during operation of the vacuum cleaner 1.

  In addition, a filter case 17 is provided between the lower main body case 3 and the upper main body case 4, and a protective filter 18 and a filter cover 19 for suppressing the protective filter 18 are disposed in the filter case 17. Further, a dust removal unit 7 is disposed above the filter case 17. The dust removal rotating body 24 provided in the dust removal unit 7 rotates and repels a filter portion 21 formed in a pleat shape, which will be described later, to remove dust accumulated on the filter portion 21.

  The lower body case 3 includes a traveling wheel 11 and a guide wheel (not shown) for causing the cleaner body 2 to travel on the floor surface. Furthermore, a handle 6 is attached to the upper part of the upper body case 4 so as to be able to rotate, and the cleaner body 2 can be carried.

  The inlet 30 provided in the dust collecting case 5 and the connecting portion 12a of the hose 12 inserted into the hose connecting port portion 10 are in contact with each other in an airtight state via the elastic seal member 10a. Here, when the dust collecting case 5 is attached to the cleaner body 2, the dust collecting case 5 and the filter case 17 can be hermetically sealed by an elastic seal member 62 integrated with the filter unit 21 described later. Yes. Further, the filter case 17 and an electric blower (not shown) are in contact with each other in an airtight state via an elastic vibration-proof rubber (not shown).

  Next, the arrangement inside the cleaner body 2 will be described. The hose connection port 10 is located at the center in the width direction of the cleaner body 2 when viewed from above, and is disposed on the front surface of the cleaner body 2. Similarly, the inlet 30 of the dust collection case 5 is located at the center in the width direction of the dust collection case 5 and is disposed in front of the dust collection case 5. Since it arrange | positions in this way, since it is not necessary to provide a curvature etc. in the entrance part of the dust collection case 5, the effect which can make ventilation loss small is acquired.

  Moreover, since the inlet 30 which is an air intake is provided in the dust collecting case 5 below the center of the height direction of the dust collecting case 5, the hose connection port 10 communicating with the inlet 30 is also provided. The vacuum cleaner body 2 can be disposed below the center in the height direction. For this reason, since the hose connection port 10 can be arranged at the lower part of the cleaner body 2, when the user pulls the cleaner body 2 through the hose 12 with the hand control tube 13, The vacuum cleaner body 2 is difficult to fall and can be stably routed.

  Next, the dust collection case 5 will be described with reference to FIGS. FIG. 4 is an external perspective view of a dust collection case according to an embodiment of the present invention. FIG. 5 is a side view of the dust collection case according to the embodiment of the present invention. 6 is a cross-sectional view taken along the line AA in FIG. 7 is a cross-sectional view taken along line BB in FIG. FIG. 8 relates to the embodiment of the present invention, and is a perspective view showing the dust containing means protruding from the dust collecting case. FIG. 9 relates to an embodiment of the present invention, and is a perspective view showing a dust holding means held by a clamp member (locking means). FIG. 10 relates to the embodiment of the present invention, and is a perspective view showing the dust containing means from the back. FIG. 11 relates to the embodiment of the present invention, and is an external perspective view showing the dust collecting case from the back side. FIG. 12 relates to the embodiment of the present invention, and is a perspective view showing a state where the filter portion is opened from the dust collecting case.

  As shown in FIGS. 6 to 8, the dust collecting case 5 includes dust storing means 20 (moving member) for collecting dust and storing the dust therein, and the dust storing means 20 is provided with a dust collecting case. 5 is provided so as to be able to protrude from the opening 25. In a state where a part of the dust storage means 20 protrudes from the opening 25 of the dust collection case 5, the other part is located in the dust collection case. The dust container 20 has a function as a first filter that separates air and dust.

  On the rear side of the dust collecting case 5, there is provided a filter portion 21 having a corrugated pleated filter. The filter portion 21 functions as a second filter and is provided so as to be openable and closable with respect to the dust collecting case 5 as shown in FIG. The lower portion of the filter portion 21 is rotatably supported by a lower portion of the dust collecting case 5 by a hinge 23, and the upper portion is locked to a hook 22 provided on the upper portion of the dust collecting case 5. When the hook 22 is unlocked by pressing the operation button 32 for operating the hook 22, the filter unit 21 is opened with the lower hinge 23 as a fulcrum.

The dust storage means 20 collects large coarse dust by filtration. Fine fine dust passes through the dust container 20 and is collected by filtration in the filter portion 21 of the dust collection case 5. The dust removal unit 7 has a dust removal rotating body 24 as shown in FIG. The dust remover 24 is rotated by unwinding a power cord (not shown) wound around a cord reel (not shown), and repels and vibrates the reinforcing portion 33 provided on the filter portion 21. The fine dust collected by the filter unit 21 is removed from the filter unit 21. Fine dust removed from the filter portion 21 falls downward and is stored in a pocket 51 provided at the lower portion of the dust collecting case 5 shown in FIG. The pocket 51 prevents the fine dust that has been removed from being scattered again and reattaching to the filter portion 21 when the air flow passes through the dust collecting case 5 by the operation of the vacuum cleaner. It is configured. The fine dust collected in the pocket 51 may be discarded when the filter unit 21 is rotated from the dust collecting case 5 to open the opening provided behind the dust collecting case 5. At this time, the dust adhering to the filter portion 21 may be removed by brushing with a brush 35 with a brush or washing with water. Moreover, most of the dust collected by the filter unit 21 is fine dust. For this reason, if the reinforcement part 33 provided in the corrugated pleat of the filter part 21 is flipped along the guide 34, it also has the characteristic that it is easy to remove fine dust.

The dust collection case 5 has an opening 25 in which the dust storage means 20 appears and disappears on the front side. A front lid 26 serving as an opening / closing lid for opening and closing the opening 25 is rotatably provided on the front side of the dust collecting case 5. The front lid 26 has an inlet 30 into which dust-containing air containing dust flows. The dust-containing air that has passed through the inflow port 30 flows into the dust container 20. The dust accommodating means 20 is formed in a container shape having an inlet 30 side (front side) opened, and a filter member 201 provided on the back side, top, bottom, left and right side surfaces. A filter member 201 is disposed. And the opening part of the dust accommodating means 20 is arrange | positioned so that the inflow port 30 may be opposed, and the dust inflow from the inflow port 30 is received by the dust accommodating means 20. FIG. The dust container 20 protrudes toward the inlet 30 through which dust flows when the front lid 26 is opened. That is, the dust storage means 20 as a filter is provided so as to be able to protrude from the opening 25 of the dust collection case 5, and shears the dust collected on the upstream side of the filter in the air flow direction (the direction in which dust is sucked). Without discharging, it is discharged so as to push toward the upstream side opposite to the air flow direction. For this reason, the operation | movement when the dust accommodating means 20 protrudes from the opening part 25 of the dust collecting case 5 is not inhibited, and the dust accommodated in the dust accommodating means 20 can be discarded easily.

  The inflow port 30 is provided with a check valve 31 that prevents the dust accumulated in the dust storage means 20 from flowing backward or preventing the sucked dust from spilling out of the dust collecting case 5.

A lower portion of the front lid 26 is rotatably supported by a front lower portion on the outer peripheral side of the dust collecting case 5 by a hinge 27. A handle 28 extending in the front-rear direction is provided on the upper portion of the dust collection case 5. A clamp member 29 (locking means) is provided as front lid restraining means for restraining the front lid 26 closed on the distal end side of the handle 28 in a closed state. In addition, a locking groove 40 is provided in the upper portion of the front lid 26 and is engaged with the flange 36 of the clamp member 29 to restrain the front lid 26. By this front lid restraining means, the front lid 26 is restrained in a closed state. When the clamp member 29 is pushed and the collar 36 moves upward from the locking groove 40 to release the locking, the front lid 26 is It is opened so that it may fall forward.

  If the front lid 26 is closed, the front lid 26 pushes the dust accommodating means 20 to accommodate the dust accommodating means 20 at a predetermined position in the dust collecting case 5, and the flange 36 of the clamp member 29 is located above the front lid 26. The front cover 26 is restrained by engaging with a locking groove 40 provided on the front cover 26, and the dust container 20 is also locked by the front cover 26. That is, one operation of opening the clamp member 29 can open both the front lid 26 and the dust accommodating means 20, and one operation of closing the front lid 26 brings the front lid 26 and the dust accommodating means 20 to a predetermined position. Features that can be locked. In addition, as shown in FIG. 10, the rib 39 is provided in the support frame 200 of the dust accommodating part piece 20A which is the dust accommodating means 20 by the side of the clamp member 29. As shown in FIG. When the front cover 26 is closed and the dust accommodating means 20 is pushed into the dust collecting case 5, the opening end face 46 of the dust collecting case 5 shown in FIG. 7 pushes the rib 39 provided on the dust accommodating portion piece 20A. The open dust container 20 receives a force in the closing direction. That is, the rib 39 has a function of making it easy to house the dust container 20 in the dust collection case 5.

  Here, as shown in FIG. 8, a locking groove B <b> 37 is provided above the dust accommodating means 20 on the clamp member 29 side. For this reason, when the dust accommodating means 20 protruding from the opening 25 of the dust collecting case 5 is pushed to the dust collecting case 5 side, as shown in FIG. 9, the flange 36 of the clamp member 29 engages with the locking groove B37. Thus, the dust container 20 can be held. This state is an intermediate position when the dust container 20 protrudes from the opening 25 of the dust collection case 5 and when it is locked at a predetermined position in the dust collection case 5 when sucking the dust. It is in. In this state, it is easy to clean the inside of the dust storage means 20, or when using a disposable dust collecting filter paper such as tissue paper to be described later, it is easy to arrange the disposable dust collecting filter paper such as tissue paper. Prepare. Even in this case, both the front lid 26 and the dust storage means 20 can be opened by one operation of opening the clamp member 29.

  The dust container means 20 has at least two dust container parts 20A and 20B which are divided into upper and lower parts. Although the dust storage means 20 can be divided into left and right, here, description will be given along two dust storage pieces 20A and 20B which are divided vertically.

  The upper dust container piece 20A and the lower dust container piece 20B are joined together vertically to form the dust container means 20. The dust disposal port 202 is provided on the front side of the dust container 20. A hinge 203 is provided on the rear side / rear side of the dust container 20. The two dust container pieces 20A and 20B are connected and supported by the hinge 203 so as to be rotatable. The two dust container pieces 20A and 20B that are rotatably supported by the hinge 203 can widen or narrow the dust disposal port 202. The hinge 203 may be urged by using a spring (not shown) in order to widen the dust disposal port 202. As this spring, a helical spring or a leaf spring is used. Further, the steel wire may be bent into a square shape and hooked on the dust accommodating portion piece 20A and the dust accommodating portion piece 20B constituting the dust accommodating means 20 to be biased so as to be opened.

Here, as shown in FIG. 6 and FIG. 7, the dust container means 20 is located upstream from the dust disposal port 202 (upstream as viewed from the air flow) when the two dust container pieces 20A and 20B are joined together. The shape narrows from the side toward the downstream side. Here, as the flow path width is reduced from C1 to C2, and because the flow path width is configured to be narrower from D 3 to D 4, dust accommodating section 20, the cross-sectional area for flow upstream From the dust disposal port 202 disposed on the inflow portion 30 side, the size is reduced to the downstream side. That is, the dust storage means 20 extends toward the dust disposal port 202. Further, the flow path width is widened from A1 to A2, and the flow path width is widened from B1 to B2. Since such a configuration, configured channel 38 between the dust collecting case 5 and dust accommodating section 20 outside the filter portion 21 side is a lid 26 side or al Downstream side front is the upstream side It has a shape that expands.

  The air flow that has flowed out from the dust storage means 20 is upstream of the filter unit 21 that is the most downstream side of the flow path 38, so that all of the air flow that flows into the dust collecting case 5 flows. There is more air volume than. That is, since the air flow that has passed through the filter member 201 gradually gathers from the upstream side to the downstream side of the flow path 38, the air volume of the air flow that flows through the flow path 38 gradually increases from the upstream side to the downstream side. It has become. For this reason, since the flow path 38 becomes an enlarged flow path, a large increase in speed can be prevented in the flow path 38, and a ventilation loss can be reduced.

  The dust collected and stored by the dust storage means 20 is accumulated from the vicinity of the filter member 201a where the flow from the inflow portion 30 is easy to directly hit. Here, since the air flow that has flowed into the dust storage means 20 generates a vortex in the dust storage means 20, the air flow passing through the filter member 201 near the inner inlet 30 of the dust storage means 20 is also caused by this vortex flow. As a result, dust accumulates so as to cover the entire filter member 201. That is, when dust accumulates in the dust storage means 20, the air flow that has passed through the filter member 201 gradually gathers from the upstream side to the downstream side of the flow path 38. The flow volume is gradually increased from the upstream side to the downstream side. For this reason, since the flow path 38 becomes an enlarged flow path, a large increase in speed can be prevented in the flow path 38, and a ventilation loss can be reduced.

  Furthermore, since the flow velocity of the air flow flowing into the filter unit 21 is reduced and the appearance of a locally fast part can be prevented, an increase in ventilation loss when passing through the filter unit 21 can be suppressed, and the suction work rate can be reduced. Can be improved. In addition, since a locally fast portion can be prevented from appearing in the distribution of the air flow flowing into the filter portion 21, it is possible to reduce the amount of dust blown through without being collected by the filter portion 21. As a result, the dust collection efficiency of the dust collecting case 5 can be improved, the exhaust from the cleaner body can be purified, and the fine dust can be prevented from flowing into the electric blower. The failure of the part can be suppressed.

In addition, since the dust collection case 5 is configured to expand from the front lid 26 side which is the upstream side to the filter portion 21 side which is the downstream side, the filter area of the filter portion 21 can be increased. . As a result, since the flow velocity of the air flow passing through the filter unit 21 can be reduced, ventilation loss can be reduced and the dust collection efficiency of the filter unit 21 can be improved.

  The dust container 20 includes a support frame 200 that maintains the outer shape, and a filter member 201 that is stretched on the support frame 200. Since the filter member 201 is composed of a mesh-like net filter, a wire mesh, a metal plate having a minute hole, a plastic plate having a minute hole, the filter member 201 filters coarse dust. Gather. In order to improve dust separation, it is preferable to use a filter member 201 made of a metal such as stainless steel or a polyester obtained by sputtering metal particles such as stainless steel. Of the filter member 201, particularly the innermost part is easily contacted by the sucked dust, so that the filter member 201a that is easy to directly contact the flow from the inflow portion 30 is sharp and does not have a hole. It is more preferable to use a net made of a metal such as stainless steel for the filter member 201a in this portion.

  Here, as shown in FIG. 10, the dust container 20 includes a support frame 200 that maintains the outer shape and a filter member 201 provided on the upstream side of the support frame 200, and the support frame 200 includes a filter member 201. The rectifying rib 200a is provided so as to rectify the flow flowing out from the 201. The air flow that has flowed into the dust accommodating means 20 generates a vortex in the dust accommodating means 20, but the flow that has passed through the dust accommodating means 20 has a flow velocity distribution rectified by the filter member 201 and the rectifying rib 200a. Therefore, it is possible to prevent a locally fast portion from appearing in the distribution of the air flow flowing into the filter unit 21. Therefore, an increase in ventilation loss when passing through the filter portion 21 can be suppressed, and the amount of dust blown through without being collected by the filter portion 21 can be reduced, so that the collection efficiency can be improved.

  It should be noted that light and fluffy fiber dust such as cotton dust collected by the dust storage means 20 tends to be compressed into a lump due to the air flow passing through the dust storage means 20. During operation of the vacuum cleaner 1, the dust storage means 20 is pushed to the filter unit 21 side, which is an electric blower (not shown) side, by the fiber dust compressed and solidified in the dust storage means 20. Since the rectifying rib 200a increases the strength of the dust accommodating means 20, the deformation of the dust accommodating means 20 can be suppressed, and the effect of preventing dust from spilling between the dust accommodating portion pieces 20A and 20B constituting the dust accommodating means 20 is achieved. There is also.

  Further, when dust accumulates in the dust storage means 20, it accumulates from the vicinity of the innermost filter member 201 a in the dust storage means 20, but the dust collection case 5 of the dust storage means 20 and the dust storage means 20. Since the upstream of the flow path 38 formed between the outside and the vicinity of the front lid 26, even if dust is sucked into the dust container 20, the increase in ventilation loss can be reduced, and the suction force of the vacuum cleaner 1 can be reduced. It also has the feature that it is possible to suppress a decrease in the amount.

  Light and fluffy fiber dust such as cotton dust collected by the dust storage means 20 is likely to be compressed by the air flow passing through the dust storage means 20. Moreover, a part of the fine dust which flowed into the dust accommodating means 20 is also collected by the fiber dust compressed and solidified within the dust accommodating means 20. When the operation of the electric vacuum cleaner is stopped, the compressed dust lump loses the compressive force due to the air flow, the compressed dust lump spreads, and the dust lump volume increases.

  However, the dust storage means 20 expands toward the dust disposal port 202, and when the accumulated dust is discarded, the two dust storage unit pieces 20A and 20B are opened so as to expand the dust disposal port 202. Even when a mass of compressed dust stored in the storage means 20 spreads, it can be easily discharged from the dust disposal port 202.

  At this time, the dust sucked into the dust storage means 20 is easily compressed into a lump due to the air flow, and is also discharged in a lump when discharged from the dust storage means 20 through the dust disposal port 202. The filter member 201 provided in the means 20 is less likely to be clogged with less adhesion and entanglement of dust. For this reason, it is possible to prevent the filter member 201 from having to remove dust only by throwing away the dust accumulated in the dust container 20.

Moreover, a part of fine dust, such as the dust which flowed into the dust accommodating means 20, is also collected by the fiber dust compressed and solidified in the dust accommodating means 20, and the fiber dust wraps the fine dust. Therefore, when the dust accumulated in the dust storage means 20 is thrown away, the fine dust does not rise and is hygienic. A part of fine dust such as dust that has flowed into the dust storage means 20 is also collected, and the fiber dust wraps the fine dust. Therefore, the filter member 201 provided in the dust storage means 20 is formed of fine dust. Less likely to clog. As a result, it is possible to suppress a decrease in the air volume when the electric vacuum cleaner is operated, and it is possible to suppress a decrease in suction force, and thus it is possible to suppress a decrease in the ability to suck dust on the surface to be cleaned.

  Note that the dust disposal port 202, which is an opening provided on the upstream side of the dust storage means 20, is larger than the inlet 30 of the dust collecting case 5, so that the dust flowing into the dust storage means 20 from the inlet 30 Can be prevented from clogging at the dust disposal port 202 when being discarded from the dust container 20. In addition, if the dust disposal port 202 is enlarged, the volume of the dust container 20 can be increased even if the depth direction of the dust container 20 is shortened, so that the depth (length) of the cleaner body 1 can be reduced. Can be downsized.

  Here, before attaching the dust collecting case 5 to the cleaner body 2, a disposable dust collecting filter paper such as tissue paper is put in the concave portion of the dust storing means 20 with the front lid 26 opened, and then the front lid 26 is removed. When closed, the dust container 20 is pushed by the front lid 26 and placed at a predetermined position in the dust collecting case 5. In addition, as shown in FIG. 9, the disposable dust collecting filter paper such as tissue paper is attached in a state in which the collar 36 of the clamp member 29 is engaged with the locking groove B37 and holds the dust container 20 as shown in FIG. Hook one side of the disposable dust filter paper such as a paper sheet on the clamp member 29, hold the opposite side near the hinge 27 side of the dust container 20B, and close the center of the disposable dust filter paper such as tissue paper. It is good to push in and attach to the recessed part side of the dust accommodating means 20. Here, the rotation axis of the hinge 27 is arranged closer to the filter part 21 side in the depth direction of the dust collecting case 5 than the contact part 23 provided around the opening part 25. For this reason, the hinge 27 is easy to hold between the disposable dust collecting filter paper such as tissue paper. Further, since the hinge 27 is arranged in this way, the outer diameter of the dust collecting case 5 itself can be reduced as compared with the case where the rotation shaft of the hinge 27 is separated from the opening 25 in the direction directly below the opening 25. The vacuum cleaner body 2 can be made small.

  After this, if the dust collecting case 5 is attached to the cleaner main body 2 and the vacuum cleaner 1 is operated for cleaning, the dust sucked into the dust accommodating means 20 is disposed upstream of the filter member 201. Most of the sucked dust accumulates in the disposable dust collecting filter paper such as tissue paper and the upstream side thereof. In this state, the case where the dust collecting case 5 is taken out from the cleaner body 2 and the dust is discarded will be described. Since the dust sucked into the dust storage means 20 tends to become a mass compressed by the air flow, it is disposed upstream of the dust storage means 20 and on a disposable dust collecting filter paper such as tissue paper disposed in the recess of the dust storage means 20. It is in a wrapped state. For this reason, even when dust is discharged through the dust disposal port 202, most of the dust is discharged in a lump state wrapped in disposable dust collecting filter paper such as tissue paper, so that fine dust rises. It is hygienic. In the above description, the disposable dust collecting filter paper such as tissue paper is attached by removing the dust collecting case 5 from the vacuum cleaner main body 2. However, the electric cleaning is performed with the dust collecting case 5 attached to the vacuum cleaner main body 2. It is also possible to operate the machine 1 and suck a disposable dust collecting filter paper such as tissue paper from the tip of a hose (not shown) connected to the cleaner body 2 and place it in the recess of the dust container 20. .

  Further, the electric vacuum cleaner 1 is operated with the dust collecting case 5 attached to the cleaner body 2 before throwing away the trash, and disposable tissue paper or the like is disposed from the tip of a hose (not shown) connected to the cleaner body 2. It is also possible to suck the dust collecting filter paper, and to dispose the dust after wrapping it with disposable dust collecting paper such as tissue paper on both the upstream and downstream sides of the dust sucked and accumulated in the dust storing means 20. In this way, if a disposable dust collecting filter paper such as tissue paper is arranged on the upstream side of the first filter of the dust storing means 20, dust is less likely to adhere to the first filter and the first filter is clogged. Since it can prevent, the fall of suction power can be prevented.

In the following, the dust containing portion piece 20B of the lower side is rotatably supported at the end side of the dust containing portion piece 20B lower the hinge 41 of the dust disposal port 202. The hinge 41 is located inside the collar portion 42 in which the opening 25 is formed in the dust collecting case 5. The hinge 41 and the hinge 27 of the front lid 26 are located on the front side of the dust collecting case 5 and are provided adjacent to each other. For this reason, the opening / closing operation | movement of the front cover 26 and the dust accommodating part piece 20B is gathered together, and is performed smoothly. A hinge 27, which is a support portion for the front lid 26 that supports the front lid 26 so as to be opened and closed, is disposed on the outer peripheral portion of the dust collecting case 5, and the dust accommodating portion piece 20B is provided to support the dust accommodating means 20 so as to be opened and closed. A hinge 41 provided on the inside of the dust collecting case 5 is provided. A hinge 41 that supports the dust storage means 20 so as to be openable and closable is disposed at a front portion of the dust storage means 20 at a position close to a hinge 27 that is a support portion for the front lid 26. Since it arrange | positions in this way, the airtight of the front cover 26 and the dust collecting case 5 should just provide the elastic body sealing member 52 attached to the front cover 26. FIG.

Since this elastic seal member 52 does not need to straddle the hinge 27 that pivotally supports the front lid 26, the elastic seal 52 and the abutment portion 53 are provided when the dust collecting case 5 and the front lid 26 are airtight. Since it is configured on the same plane, it is easy to keep airtight. Further, since the elastic seal member 52 can be configured not to span the hinge 41 that rotatably supports the dust accommodating means 20, the elastic seal member 52 is used when sealing between the front lid 26 and the dust accommodating means 20. Since the A contact portion 54 provided on the elastic body seal 52 and the dust container portion 20A and the B contact portion 55 provided on the elastic body seal 52 and the dust container portion 20B are configured on the same plane, Easy to be airtight. Further, with one elastic body seal 52, the airtightness between the front lid 26 and the dust collecting case 5 can be secured, and the airtightness between the front lid 26 and the dust accommodating portion 20A constituting the dust accommodating means 20 can be secured. The air tightness of the dust accommodating part 20B which comprises the dust accommodating means 20 is securable. Further, since the contact portion with the elastic body seal 52 provided on the front lid 26 can be configured on the same plane, the force only in the direction in which the front lid 26 is urged toward the dust collecting case 5 is used. What is necessary is just to give between cases 5, and since it can be set as the structure which does not raise | generate an air leak easily, the fall of a suction work rate and the spill of garbage can be prevented. Furthermore, it is possible to prevent the dust flowing in from the inlet 30 from being short-circuited and flowing to the filter unit 21 without passing through the dust container 20. Further, by making the contact point with the elastic seal 52 provided on the front lid 26 common on the same plane, there is no positional deviation between the front lid 26 and the dust accommodating means 20 during the opening / closing operation. The opening / closing operation of the front lid 26 and the dust accommodating means 20 is performed more smoothly.

  Here, as shown in FIG. 10, the protrusion biasing spring 43 is provided at the lower front side of the lower dust accommodating piece 20B. The protrusion urging spring 43 urges the lower dust accommodating portion 20 </ b> B to be pushed out of the dust collecting case 5. This protrusion biasing spring 43 is formed by a helical spring, one end is engaged with a spring locking portion 44 provided on the lower dust accommodating portion piece 20B, and the other end is engaged with the dust collecting case 5. . Due to the protrusion biasing spring 43, the lower dust accommodating portion 20B is given a rotational force in a direction protruding from the dust collecting case 5.

  Further, the upper dust accommodating piece 20A is slidably supported on the inner surface of the opening 25. With this slidable support, the dust accommodating piece 20A slides in and out of the dust collecting case 5. Operates as follows. Since it is configured in this way, by releasing the locking of the clamp member 29 restrained in a closed state of the front lid 26, the front lid 26 falls down to the front side, and the two dust container pieces 20A, the dust container The piece 20B is opened so as to expand the dust disposal port 202. In other words, the protruding biasing spring 43 biases the dust container part 20B so as to push it out of the dust collecting case 5, and the two dust container parts 20A and the dust container part 20B expand the dust disposal port 202. It is also possible to serve as a release biasing spring for releasing the. In addition, it is possible to provide a projecting means that pushes the dust container means outward by a motor or a human operating force instead of the projecting biasing spring.

The drop-off prevention member 45 of the drop-off prevention means is provided outside the upper dust container piece 20A. The drop-off prevention member 45 is configured to contact the upper side of the flange portion 42 of the dust collection case 5. The drop-preventing member 45 comes into contact with the upper side of the flange portion 42, so that the upper dust container piece 20A is stopped. Since the upper dust accommodating piece 20A does not protrude further outward, the dust accommodating piece 20A and the dust accommodating piece 20B constituting the dust accommodating means 20 are expanded and the dust disposal port 202 is expanded. The accommodating means 20 does not fall off from the dust collecting case 5.

  That is, in the dust storage means 20, the lower dust storage piece 20B is rotatably supported by the dust collecting case 5 with a hinge 41, and the upper dust storage piece 20A is slidably supported by the opening 25. Therefore, the dust storage means 20 is configured not to drop off from the dust collection case 5. A force that constantly pushes the dust storage means 20 to the outside of the dust collecting case 5 acts by the protruding biasing spring 43. The front lid 26 stops the dust accommodating means 20 from protruding against the pushing force. Now, when the clamp member 29 of the restraining means for the front lid 26 is removed, the front lid 26 is opened so as to fall forward as shown in FIG. As shown in FIG. 8, the dust container 20 that has been restrained by the front lid 26 protrudes outward from the entrance / exit opening of the dust collection case 5.

  With this protrusion, the upper dust accommodating piece 20A and the lower dust accommodating piece 20B are opened, and the dust disposal port 202 is enlarged. The dust accumulated in the dust container 20 is discharged from the expanded dust disposal port 202 all at once. Further, the dust storage means 20 is suddenly stopped by the drop-off prevention means 45 where the dust urging spring 43 protrudes out of the dust collecting case 5, so that the dust attached to the filter member 201 is peeled off by this impact. In addition, it is possible to release the dust from the dust container 20 better and to prevent the filter member 201 from being clogged, and thus it is possible to prevent a reduction in suction force.

  As shown in FIGS. 4 and 5, the dust storage means 20 that has been disposed of is stored in the dust collection case 5. The enlarged dust disposal port 202 is narrowed and returned to the dust collection case 5.

Storage of the dust storage means 20 is performed with the operation of closing the front lid 26. Since the hinge 27 that is the opening / closing axis of the front lid 26 and the hinge 41 that is the rotation axis of the dust container 20 are disposed below the dust collection case 5 in the same direction with respect to the dust collection case 5, The direction of rotation when opening and closing the lid 26 and the dust container 20 can be made the same, and the dust container 20 can be closed when the front lid 26 is closed. That is, the dust disposal port 202 that is placed forward with the opening 25 faces the front lid 26. When the front lid 26 is closed, the inner surface side of the front lid 26 comes into contact with the dust disposal port 202 which is the front surface side of the dust accommodating means 20. The dust container 20 is pushed back by the front lid 26 and returned to the dust collecting case 5.

  The dust storage means 20 is pushed back against the protruding biasing spring 43. The outer surface side of the upper dust accommodating piece 20 </ b> A is pushed and slid inside the opening 25. Therefore, as the upper dust container piece 20A enters the dust collecting case 5, it approaches the lower dust container piece 20B and the dust disposal port 202 narrows. Thus, the dust storage means 20 is housed in the dust collection case 5. In this manner, the dust storage means 20 can be easily put in and out by opening and closing the front lid 26. Moreover, since the dust accommodating means 20 can be taken in and out without touching the dust accommodating means 20, it is advantageous in terms of hygiene.

  As shown in FIG. 9, maintenance of the dust container 20 may be performed by opening the front lid 26 and brushing the dust container 20 using a brush 35. Moreover, as shown in FIG. 12, the filter part 21 can be opened and the inside of the dust collecting case 5 can be brushed and cleaned easily. At this time, fine dust accumulated in the pocket 51 may be discarded.

1 is an external perspective view of a vacuum cleaner according to an embodiment of the present invention. It is a perspective view which concerns on the Example of this invention and shows the state which opened the upper cover of the cleaner body. It is a perspective view which concerns on the Example of this invention and shows the state which opened the cleaner lid and removed the dust collection case. FIG. 4 is an external perspective view of a dust collection case according to an embodiment of the present invention. FIG. 4 is a side view of a dust collection case according to an embodiment of the present invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. FIG. 6 is a perspective view showing a dust container projecting from a dust collecting case according to an embodiment of the present invention. It is a perspective view which shows the place which concerns on the Example of this invention and the dust container was hold | maintained by the clamp member. FIG. 5 is a perspective view showing a dust container from the back, according to the embodiment of the present invention. FIG. 5 is an external perspective view showing a dust collecting case from the back side according to the embodiment of the present invention. FIG. 5 is a perspective view showing a state where a filter part is opened from a dust collecting case according to an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 ... Dust collection case, 20 ... Dust storage means, 20A, 20B ... Dust storage part piece, 21 ... Filter part, 25 ... Opening part, 26 ... Front cover, 29 ... Clamp member, 36 ... Spear, 37 ... Locking groove B, 38 ... flow path, 40 ... locking groove, 200a ... rectifying rib, 201 ... filter member, 202 ... dust disposal port, 203 ... hinge.

Claims (7)

In a vacuum cleaner comprising a vacuum cleaner body incorporating an electric blower, and a dust collecting case detachably provided on the vacuum cleaner body,
The dust collection case includes a filter unit and a dust container that is disposed on the upstream side of the filter unit and stores dust .
The dust storage means has a shape that opens upstream and is recessed in a container shape on the filter portion side, and has a filter member on the back side surface and side surface of the shape recessed in the container shape,
The dust storage means has a cross-sectional area that is recessed in the container shape, and decreases from the upstream side to the downstream side,
The cross-sectional area surrounded by the inner wall of the dust collection case increases from the front side to the rear side,
A vacuum cleaner characterized in that a flow path constituted by an outer side surface of the dust container and an inner wall of the dust collecting case is configured to expand from the upstream side to the downstream side. In claim 1,
An inflow part for allowing dust to flow into the dust collecting case is provided,
The vacuum cleaner characterized in that the upstream opening of the dust container is formed to be larger than the inflow portion. In claim 1,
The dust collecting case, vacuum cleaner, wherein an inlet portion located on the front side of the dust collecting case, in that a a filter portion located on the rear side of the dust collecting case. In claim 1 or 2,
The filter member of the dust container is constituted by a mesh-like net filter or a metal net, a metal plate having a minute hole, or a plastic plate having a minute hole,
The filter portion of the dust collecting case has a corrugated filter.
Vacuum cleaner, wherein a call. In any one of Claim 1-4,
The dust containing means has a support frame that maintains the outer shape , the filter member is stretched on the support frame, and the support frame is provided with a rectifying rib that rectifies the flow that flows out of the dust collection filter. Characterized vacuum cleaner. In any one of Claim 1 to 5,
The dust collection case includes a member having an air inlet,
The member having the air inflow port is rotatably provided, and can cover the opening of the dust accommodating means with the member having the air inflow port closed.
The dust storage means is rotatably supported in the same direction as the rotation direction of the member having the air inlet,
Further, the dust accommodating means rotates with the member having the air inlet opened, and is accommodated by the member having the air inlet with the member having the air inlet closed. A vacuum cleaner characterized by that. In claim 6,
An electric vacuum cleaner comprising: a member that limits a rotation range of the dust containing means in a state where the member having the air inlet is open.

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