JP2005211436A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner in which suction port packing is easily attached to a dust collecting case 3 and the suction port packing does not easily separate. <P>SOLUTION: The vacuum cleaner has a cleaner body provided with a motor-driven blower and a dust collecting part, and the dust collecting case freely attachable to and detachable from the dust collecting part. The dust collecting case is provided with a dust suction port and a filter part provided on the opposite side of the dust suction port. The dust suction port is provided with suction port packing for airtightness, and a packing pressing cover member for pressing the suction port packing from the outer side to the dust collecting case is attached to the dust collecting case. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vacuum cleaner.

  A vacuum cleaner provided with a cyclone separation type dust collecting section is described in Japanese Patent Application Laid-Open No. 2003-79546 (Patent Document 1). In this conventional vacuum cleaner, the sucked dust is centrifuged by a cyclone separation cylinder, and dust collected in the dust collecting chamber is compressed and collected.

JP 2003-79546 A

  Since the conventional vacuum cleaner includes a cyclone separation cylinder in the dust collection case of the dust collection unit, the structure is complicated. Since the cyclone separating cylinder is placed in the dust collection case, the paper dust bag filter cannot be used. If a paper dust bag filter can be used in the dust collection case, it is necessary to provide a suction port packing that keeps the paper dust bag filter airtight.

  An object of the present invention is to provide an electric vacuum cleaner in which the suction port packing can be easily attached to a dust collecting case and the suction port packing is not easily detached.

  The present invention has a vacuum cleaner body having an electric blower and a dust collecting part, and a dust collecting case that is detachably attached to the dust collecting part. The dust collecting case is opposite to the dust suction opening. The dust suction port packing is provided in the dust suction case, and a packing holding cover member that presses the suction port packing from the outside to the dust collection case is attached to the dust collection case. It is characterized by.

  According to the present invention, the suction port packing can be easily attached to the dust collecting case 3, and the attached suction port packing is firmly fixed by the packing pressing cover member, so that it does not easily come off.

  An example according to the embodiment of the present invention will be described with reference to FIGS.

  First, an outline of the vacuum cleaner main body will be described with reference to FIGS. 1, 2, and 3.

  The vacuum cleaner body is provided with an electric blower 1. A fine dust collecting filter 2 is provided on the suction side of the electric blower 1. A dust collecting part is provided on the front side (upstream side) of the fine dust collecting filter 2, and a dust collecting case 3 is detachably provided in the dust collecting part. The dust collection part is a recess in which the dust collection case 3 is accommodated.

  The cleaner body has an upper lid 4 on the upper side of the dust collecting portion. The upper lid 4 is supported so as to be rotatable in the vertical direction. By rotating upward, the upper lid 4 is opened, and the dust collection case 3 is taken in and out of the dust collection section.

  The front side of the dust collecting part (the front side of the vacuum cleaner main body) has a hose side suction port 5 into which a suction hose is inserted. A hose side packing 6 that keeps airtightness with the dust collecting case 3 side is provided on the inner end periphery of the hose side suction port 5. The vacuum cleaner body is supported by wheels 7 and casters 8 so as to be able to run freely.

  The dust collection case will be described in more detail with reference to FIGS.

  In the dust collection case 3, dust is collected in an internal dust collection chamber (garbage storage unit). A handle 9 is provided on the upper side of the dust collection case 3. With the handle 9, the dust collecting case 3 can be easily put in and out of the dust collecting portion.

  The dust collection case 3 has a dust suction port 20 on the front side. An airtight suction port packing 21 is attached to the dust suction port 20. The suction port packing 21 is attached so as to sandwich the mouth edge 20a of the dust suction port 20. Since the suction port packing 21 is made of rubber (soft and elastic), it can be easily attached to the mouth edge 20a. A packing pressing cover member 22 is attached to the front surface of the dust collection case 3 so as to be tightened with screws 23. The screw 23 is screwed into the screw boss 24 of the dust collecting case 3.

  The packing presser cover member 22 has a waste distribution port 25 that communicates with the dust suction port 20. Since the inner end of the dust distribution port 25 contacts the outer side of the suction port packing 21 as shown in FIG. 3, the suction port packing 21 is pressed against the dust collecting case 3. By this pressing, the soft rubber suction packing 21 is firmly fixed to the dust collecting case 3 and does not easily fall off.

  Thus, since the suction inlet packing 21 can be easily attached to the dust collecting case 3 and is firmly fixed by the packing pressing cover member 22, there is no problem that it easily comes off.

  Further, since the dust distribution port 25 and the dust collecting case 3 are joined via the suction port packing 21, the air circulation is good, air leakage is suppressed, and a decrease in suction force can be suppressed.

  As shown in FIG. 1, the outer end portion of the dust distribution port 25 is joined so as to be in close contact with the hose-side packing 6 when the dust collection case 3 is attached to the dust collection portion. By this joining, the airtightness of the joint portion between the hose side suction port 5 and the dust distribution port 25 is improved, air leakage is suppressed, and a reduction in suction force can be suppressed.

  The suction port packing 21 has a lip 26 on the inner side (site facing the dust collection chamber side of the dust collection case 3). The lip 26 contacts the paper dust bag filter. The paper dust bag filter will be described in detail later.

  The garbage distribution port 25 is inclined upward toward the garbage suction port 20. Due to this upward inclination, the dust (dust) flowing into the dust collection chamber (trash storage part) is directed upward.

  As shown in FIGS. 3 to 8, a locking lever 27 of locking means for holding the paper dust bag filter is provided on the upper front side of the dust collecting case 3.

  The locking lever 27 is movably supported by the packing pressing cover member 22. The locking lever 27 has an operation portion 28 and an arm portion 29, and an intermediate support shaft 40 is movably supported by a support frame 41 provided on the packing pressing cover member 22.

  The operation portion 28 is located outside the packing press cover member 22, and the arm portion 29 is located inside the packing press cover member 22. The arm portion 29 is further placed through the lever insertion hole 42 formed in the upper front portion of the dust collection case 3 so as to protrude toward the dust collection chamber (garbage storage portion).

  The arm portion 29 has a locking projection 43 on the lower surface on the distal end side. The locking lever 27 is biased by a spring so that the front side of the arm portion 29 faces downward. By pushing the operating portion 28 against the spring, the arm portion 29 side of the locking lever 27 is raised upward. The arm part 29 side is raised upward to attach and detach the paper dust bag filter.

  The locking means airtight packing 44 is provided to maintain the airtightness where the locking lever 27 of the locking means is provided. As shown in FIG. 8, the locking means airtight packing 44 includes a flat portion 45 and a raised portion 46 provided at the center of the flat portion 45. The flat part 45 has a horizontally long rectangular shape. The raised portion 46 has a shape raised on one side, and has a slit 47 at the center.

  The arm portion 29 of the locking lever 27 is inserted into the slit 47 of the airtight packing 44 for the locking means, the raised portion 46 is placed so as to fit into the support frame 41, and the flat portion 45 contacts the vicinity of the lever insertion hole 42. Touch.

  The gap of the lever insertion hole 42 is closed by the arm portion 29 being inserted so as to be in close contact with the slit 47 and the flat portion 45 coming into contact with the vicinity of the lever insertion hole 42. Since the airtight packing 44 for the locking means is made of rubber and rich in elasticity, the arm portion 29 can be easily inserted into the slit 47. For this reason, air does not leak from the gap of the lever insertion hole 42, and a reduction in suction performance can be suppressed.

  As shown in FIGS. 9 to 13, the dust collecting case 3 includes a filter unit 60 on the opening side opposite to the dust suction port 20. The filter unit 60 is rotatably supported by a hinge 61 on the rear end of the lower end of the dust collecting case 3. By rotating and opening the filter unit 60 so as to be tilted, the dust outlet on the rear side of the dust collecting case 3 is opened, and the dust accumulated in the dust collecting case 3 can be discarded. The filter unit 60 may be detachable from the dust collecting case 3.

  The filter unit 60 includes a filtration filter 62 that filters dust (dust) sucked into the dust collection case 3, and an arcuate guide wall 63 provided adjacent to the filtration filter 62. The filter unit 60 has a nonwoven fabric filter 64 on the downstream side of the filter 62. This non-woven filter 64 has a filtration vent hole finer than the filtration mesh (filtration vent hole) of the filtration filter 62. A coarse filter (not shown) made of urethane is interposed between the filter 62 and the non-woven filter 64. The coarse filter has a filtration vent hole larger than the filtration filter 62.

  Most of the dust is collected by the filtration filter 62 and collected in the dust collecting case 3. Dust that has passed without being collected by the filter 62 is collected by the non-woven filter 64. The coarse filter is a filtration vent hole larger than the filtration filter 62, but becomes a resistance of the air flow flowing through the non-woven filter 64, and removes dust contained in the air flow. With this dust removal, the amount of dust collected by the non-woven filter 64 is reduced, the clogging of the filter 64 can be alleviated, and the frequency of cleaning (dust removal) of the filter 64 can be reduced.

  The fine dust collecting filter 2 of the vacuum cleaner body has finer filtration ventilation holes than the filter 64. Fine dust that cannot be collected by the non-woven filter 64 is collected by the fine dust collection filter 2, so that the fine dust contained in the exhaust of the cleaner body is extremely small.

  As shown in FIG. 9, a dust removing means is provided on the back surface (downstream surface) of the non-woven filter 64. The dust removing means has a dust removing lever 66 that is rotatably supported by a fulcrum 65. Since the tip end side of the dust removal lever 66 is slidably supported by the guide 67, the filter 64 is not separated from the back surface when the dust removal lever 66 is operated.

  By repeatedly moving the dust removal lever 66 left and right, the filter 64 is struck from the back and vibrates. Due to this vibration, dust adhering to the filter 64 is shaken off and dust removal is performed. This dust removal is performed when the dust collected in the dust collecting case 3 is discarded or when the suction force is weakened.

  As shown in FIGS. 9 and 11, a lock button 68 is provided on the rear end side of the handle 9.

  The lock button 68 is held in the closed state of the filter unit 60. The filter unit 60 has a hanging hole 69 in the upper part. The hook portion 69 of the lock button 68 engages with the hook hole 69, and the filter portion 60 is held in the closed state. When the lock button 68 is pushed down, the claw portion 80 is detached from the hook hole 69 and the filter portion 60 can be opened.

  As shown in FIGS. 10 and 11, the filter unit 60 includes a filtration filter 62 and an arcuate guide wall 63 provided adjacent to the filtration filter 62.

  The filtration filter 62 has a fine mesh formed by knitting polyester strands. The filter 62 is stretched flat on the frame portion of the filter unit 60. The filtration filter 62 is formed integrally when molding the synthetic resin frame.

  The mesh of the filter 62 is as fine as about 200 mesh (200 lines / 1 inch). Since the filter 62 has a fine mesh and is made of synthetic resin polyester, the dust is easy to slip and hardly adheres to the dust. Since the antistatic treatment is applied, the dust is more slippery and less likely to adhere (good dust releasability). Since dust does not adhere to the filtration filter 62, the dust in the dust collection case 3 does not remain attached to the filtration filter 62 and is discarded cleanly.

  A guide wall 63 provided adjacent to the filtration filter 62 is formed of a synthetic resin integrally with the frame portion of the filter portion 60. The guide wall 63 has an arc shape with a radius of 30 mm to 40 mm, is formed over a range of approximately 90 °, and is formed so as to draw an arc toward the dust suction port 20 side.

  Inside the guide wall 63, there is a ventilation rib 70 extending in the arc direction. The ventilation ribs 70 are formed in three stages at intervals. The ventilation rib 70 is provided to improve the air permeability of the paper dust bag filter described later. The ventilation rib 70 also serves to reinforce the guide wall 63. A ventilation rib 95 corresponding to the ventilation rib 80 is also provided inside the dust collecting case 3.

  The guide wall 63 has a protruding portion 81 on the outside. This protrusion 81 acts so that when the dust collection case 3 is mounted on the dust collection part of the cleaner body, a force is applied to contact the dust collection part and close the filter part 60. For this reason, there is no problem that the filter unit 60 is opened during the operation of the vacuum cleaner and the dust cannot be sucked.

  Due to the operation of the vacuum cleaner, the suction airflow vigorously flows into the dust collection chamber of the dust collection case 3 from the dust suction port 20. A swirling flow 82 as shown by an arrow in FIG.

  That is, the suction airflow that flows into the dust collection chamber vigorously collides with the filter 62 and flows vertically and horizontally. The suction airflow that flows in the direction where the arc-shaped guide wall 63 is present is a flow along the arc, so that it is difficult to lose momentum, and the filtration air that has passed through the front of the dust suction port 20 and separated from the guide wall 63 is filtered. This is a swirl flow toward the part of the filter 62. The swirl flow 82 collects dust collected at the portion of the filtration filter 62 away from the guide wall 63 so as to be pressed as shown. Since the dust is compressed and collected in the dust collecting case 3, a large amount of dust can be collected.

  Moreover, since both the side surfaces adjacent to the suction inlet 20 have circular arc shape, the dust collection case 3 tends to produce the smooth flow of the swirling flow 82, and accelerates dust compression.

  This dust collection method is similar to the cyclone type having a so-called conventional cyclone cylinder, but can be realized by a simple configuration in which an arcuate guide wall 63 for causing the dust to swirl is provided next to the filter 62. Therefore, compared to a conventional cyclone cylinder, the structure is extremely simple and easy to make, and the productivity is good. In addition, because the cyclone cylinder is not provided in the dust collection case 3, it is easy to throw away garbage.

  Further, since the cyclone cylinder is not provided, the dust collection chamber of the dust collection case 3 is one large space without a partition, so that it is possible to select a usage form in which a paper dust bag filter is attached.

  The use of this paper dust bag filter will be described with reference to FIGS.

  The paper dust bag filter 83 has a bag portion 84 for collecting garbage and a mouth plate portion 85 provided with a dust entrance. Prior to use, the bag portion 84 is in a folded state on the back surface of the mouth plate portion 85. The mouth plate portion 85 has an upper engagement portion 86 and a lower engagement portion 87.

  The dust collection case 3 has two guide rails 88 on the bottom side. The guide rail 88 extends in the front-rear direction and is inclined so that the back side (the front side of the dust collecting case 3) is higher. The distance between the two guide rails 88 is slightly wider than the width of the lower engaging portion 87 of the mouth plate portion 85. The bottom portion between the two guide rails 88 is inclined so that the back side (the front side of the dust collecting case 3) is higher. For this reason, a locking groove 89 is formed in the inner bottom portion on the back side of the dust collecting case 3.

  Stopper protrusions 90 are provided on both sides of the locking groove 89. The interval between the two stopper projections 90 is substantially the same as the interval between the two guide rails 88.

  The paper dust bag filter 83 is attached as follows.

  As shown in FIG. 12, the lower engaging portion 87 of the mouth plate portion 85 of the paper dust bag filter 83 is placed between two guide rails 88, and the paper dust bag filter 83 is moved along the two guide rails. The lower engaging portion 87 fits into the locking groove 89 by being pushed into the back side of the dust collecting case 3. By fitting the lower engaging portion 87 of the mouth plate portion 85 into the locking groove 89, the vertical positions of the dust inlet of the mouth plate portion 85 and the suction port 20 of the dust collecting case 3 are automatically matched.

  Further, since the position of the lower engagement portion 87 fitted in the engagement groove 89 in the left-right direction is regulated by the stopper protrusions 90 on both sides of the engagement groove 89, the dust inlet of the mouth plate portion 85 and the suction of the dust collecting case 3 are sucked. The lateral position with the mouth 20 is automatically adjusted. For this reason, when the paper dust bag filter 83 is attached, the dust inlet of the mouth plate 85 and the suction port 20 of the dust collection case 3 are automatically aligned without being displaced. Can be easily installed.

  After this (after fitting the lower engaging portion 87 of the mouth plate portion 85 into the engaging groove 89), the operating portion 28 of the engaging lever 27 is pushed to raise the arm portion 29 and the mouth plate portion 85 is pushed to the back side. The arm portion 29 is lowered and engaged with the upper engaging portion 86. As shown in FIG. 13, the upper engaging portion 86 engaged with the arm portion 29 is held by the locking protrusion 43 of the arm portion 29 so as not to be detached. As a result, the state in which the mouth plate portion 85 of the paper dust bag filter 83 is in close contact with the lip 26 of the suction port packing 21 of the dust collecting case 3 is reliably held / maintained.

  As shown in FIG. 13, the paper dust bag filter 83 is attached to the dust collection case 3 so that the folding direction of the bag portion 84 folded on the back side of the mouth plate portion 85 is vertical. The bag part 84 can select an arbitrary position for the fold line. By selecting the position of the folding line, it is easy to cause the upper engagement portion 86 and the lower engagement portion 87 of the mouth plate portion 85 to protrude above and below the bag portion 84.

  During operation of the electric vacuum cleaner, dust collection is performed in a state where the bag portion 84 of the paper dust collection bag filter 83 is fully inflated in the dust collection case 3 by the suction airflow. The sucked airflow that has entered the bag portion 84 passes around the bag portion 84. The outer periphery of the bag portion 84 is received by the ventilation ribs 80 of the guide wall 63 and the ventilation ribs 95 of the dust collection case 3 to secure a flow path for air to flow between the guide wall 63 and the inside of the dust collection case 3. Is done. For this reason, the ventilation of the bag portion 84 is not impaired, and dust can be sucked until it is full.

  The housing of the brush will be described with reference to FIGS.

  The brush 96 is mainly used for cleaning the filter. The brush 96 is housed on the side surface of the frame portion of the filter unit 60 adjacent to the back side of the guide wall 63. A pair of locking projections 97 holding the arm portion of the brush 96 is provided on the side surface of the frame portion, and the arm portion is inserted between the locking projections 97 to hold the brush 96. The place where the brush 96 is held is the outer side surface of the frame part of the filter part 60 (the space of the corner part where the guide wall 63 and the frame part of the filter part 60 intersect), so it is convenient to store the brush 96. It is.

The longitudinal cross-sectional view of the vacuum cleaner which concerns on the Example of this invention. The perspective view which concerns on the Example of this invention and looked at the dust collection case from the front side. The vertical cross-sectional view of a dust collection case according to the embodiment of the present invention. The exploded perspective view of the dust collection case according to the embodiment of the present invention. The perspective view which looked at the dust collecting case which concerns on the Example of this invention and removed the packing presser cover member from the front side. The perspective view which concerns on the Example of this invention and looked at the packing presser cover member from the back side. The perspective view which concerns on the Example of this invention, removed the airtight packing for latching means, and looked at the packing presser cover member from the back side. The perspective view of the airtight packing for latching means according to the embodiment of the present invention. The perspective view which concerns on the Example of this invention and looked at the dust collection case from the rear side. The cross-sectional view of the dust collecting case according to the embodiment of the present invention. The perspective view which concerns on the Example of this invention and looked at the filter part from the inside. The figure which concerns on the Example of this invention and shows the place which attaches a paper dust bag filter. The figure which concerns on the Example of this invention, and shows the place which finished attaching the paper dust bag filter. The figure which concerns on the Example of this invention and shows the inner back part of a dust collection case. The figure which concerns on the Example of this invention and shows the place where the brush was attached. The figure which concerns on the Example of this invention and shows the place where the brush was removed.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Electric blower, 3 ... Dust collection case, 20 ... Garbage suction inlet, 60 ... Filter part, 21 ... Air inlet suction packing, 22 ... Packing presser cover member

Claims (6)

A vacuum cleaner main body having an electric blower and a dust collecting part, and a dust collecting case detachably attached to the dust collecting part,
The dust collection case has a dust suction port and a filter portion provided on the opposite side of the dust suction port,
An electric vacuum cleaner, wherein an airtight suction port packing is provided at the dust suction port, and a packing pressing cover member that presses the suction port packing against the dust collection case from the outside is attached to the dust collection case. The vacuum cleaner according to claim 1,
The dust collecting case can store a detachable paper dust bag filter. The electric vacuum cleaner according to claim 2,
The paper dust bag filter has a bag part for collecting garbage and a mouth plate part provided with a garbage entrance,
An electric vacuum cleaner characterized in that a locking means for detachably holding the mouth plate portion of the paper dust bag filter is provided on the pressing cover member. The electric vacuum cleaner according to claim 3,
An electric vacuum cleaner comprising an airtight packing for locking means for maintaining airtightness where the locking means is provided. In the vacuum cleaner as described in any one of Claims 1-4,
The packing holding cover member has a dust distribution port communicating with the dust suction port of the dust collecting case, and the dust distribution port is inclined upward toward the dust suction port. . The electric vacuum cleaner according to claim 3,
The electric vacuum cleaner, wherein the paper dust bag filter is attached to the dust collection case so that a folding direction of a bag portion folded on the back side of the mouth plate portion is vertical.

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