JP2005211285A - Electric vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric vacuum cleaner which can reduce burden of an electric blower during cleaning work, and can prevent dust and dirt or any article from entering the vacuum cleaner main body under a state wherein a dust and dirt container is removed from the vacuum cleaner main body in order to discard collected dust and dirt to the outside. <P>SOLUTION: This electric vacuum cleaner is equipped with the vacuum cleaner main body 1 having the built-in electric blower 2, and the dust and dirt container 4 which is freely detachably combined with the vacuum cleaner main body 1. Then, under the combined state between the vacuum cleaner main body 1 and the dust and first container 4, the dust and dirt container 4 communicates with the air suction side of the electric blower 2 through an air passage 25. In the electric vacuum cleaner, air passage opening/closing mechanisms 29, 45 and 51 which open and close the air passage 25 are provided on the vacuum cleaner main body 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vacuum cleaner in which a dust container with a filter portion is detachably coupled to a vacuum cleaner body having a built-in electric blower.

  In a conventional vacuum cleaner, for example, air mixed with dust sucked from a suction port that moves on a floor surface or the like is sucked from a connection port of a cleaner body to which a suction hose is connected. Then, the dust and air are separated by the cyclone container part and the filter body of the dust collecting container detachably coupled to the cleaner body, and the dust is stored in the container part, and the filtered air is cleaned. From the air intake port provided with the protective filter of the machine main body, it passes through the electric blower generating suction through the air intake air passage, and is exhausted to the outside from the exhaust port of the cleaner main body.

  In the cleaning work by this vacuum cleaner, when a large amount of dust is accumulated inside the dust collection container, the dust collection container is removed together with the filter body from the vacuum cleaner body, and the dust is disposed outside the trash box or the like. Become. However, with this dust container removed, dust or some other object may fall into the interior of the vacuum cleaner body, or sometimes accidentally contact a part of the human body with the power switch or cause an object to collide. The electric blower may be driven. In such a case, dust or a relatively large object may be taken into the cleaner body by the suction force of the electric blower, contaminating the inside, or destroying the fan or motor of the electric blower.

Therefore, by providing a protective filter at the intake port of the cleaner body as described above, even if the dust container is removed, foreign matter enters the interior of the cleaner body regardless of the driving state of the electric blower. I try to prevent it. (For example, see Patent Document 1)
JP 2003-135334 A (page 3, FIG. 3)

  However, even in this conventional example, since a protective filter is always present in the path of the sucked air, it becomes a load of the electric blower during the cleaning operation, causing energy loss, or reducing the performance of the vacuum cleaner. There was a problem of inviting.

  The present invention has been made in view of the above circumstances, and reduces the load while the electric blower is driven as a cleaning operation, and allows dust and some objects to enter the cleaner body when the dust container is removed. An object is to provide a vacuum cleaner that can be prevented.

  The present invention includes a vacuum cleaner main body incorporating an electric blower and a dust container that is detachably coupled to the vacuum cleaner main body, and the dust container is connected to the dust container in a combined state of the vacuum cleaner main body and the dust container. In the vacuum cleaner communicating with the intake side of the electric blower via the air passage, the main feature is that an air passage opening / closing mechanism for opening and closing the ventilation passage is provided in the cleaner body.

  The vacuum cleaner of the present invention reduces the load on the electric blower during cleaning work, and in the state where the dust container is removed from the cleaner body in order to discard the collected dust to the outside, Any object can be prevented from entering.

  Hereinafter, embodiments of the vacuum cleaner according to the present invention will be described with reference to FIGS. 1 to 11.

  FIG. 1 shows a vacuum cleaner according to one embodiment of the present invention. Reference numeral 1 denotes a vacuum cleaner body in which an electric blower 2 is built in a main body casing 3, and a hollow case body 4 as a dust container is detachably coupled to a front portion of the vacuum cleaner body 1. Thus, dust mixed in air sucked from the floor surface to be cleaned is trapped inside the case body 4 and only air is exhausted to the outside from the respective exhaust ports 5. The floor surface can be moved by a pair of wheels 6 provided on both sides.

  The vacuum cleaner main body 1 has a pressing lid 8 that is rotatable with respect to the main body casing 3 by a pair of lid hinge portions 7 in order to cover and hold the upper surface opening of the case body 4. A main body connecting tube 9 having an air inlet 11 containing dust is provided in front of the lid 8. One end of a flexible suction hose 10 covered with a spiral wire and wound around the outer periphery is detachably connected to the inlet 11 of the main body connection pipe 9 by a main body clamp 12. A hand operating part 13 is attached to the other end of the hose 10.

  The hand operation unit 13 accommodates a part of the operation circuit, and can control the electric blower 2 built in the cleaner body 1 by various operation buttons 14. Further, one end of an extension pipe 15 formed to be extendable and retractable by two long pipes is fitted to the hand operation section 13 so as to be detachable, and the other end 16 on the opposite side of the extension pipe 15 is fitted to the hand operation section 13. The end portion of the suction port body 17 is fitted and attached so as to be detachable. From the suction port body 17, dust is sucked into the air by the suction force generated by the rotation of the electric blower 2.

  The configuration of the cleaner body 1 and the case body 4 that is a dust container will be specifically described with reference to FIGS. In FIG. 5, the electric blower 2 incorporated in the rear part of the cleaner body 1 has a fan part 20 and a motor part 21 for driving the fan part 20. When the fan unit 20 is rotated by the motor unit 21, the air sucked from the suction opening 22 of the fan unit 20 flows through the motor unit 21 and cools the inside, and then is discharged from the exhaust hole 23 of the motor unit 21. Further, the air is exhausted from the exhaust port 5 of the cleaner body 1 to the outside.

  In particular, as shown in FIGS. 5 to 9, a part of the air passage opening / closing mechanism is provided in front of the main body connection opening 26 provided in the central portion of the cleaner body 1 which becomes the ventilation passage 25 in front of the suction opening 22. A state in which the bottom surface has a plurality of communication holes 28 separated by an integral frame 27 formed of a plastic material, and a shallow cylindrical support body 29 having a substantially quadrangular shape stands vertically. Is provided. The outer peripheral portion 30 of the support 29 is airtightly fixed to the opening edge 32 of the cylindrical frame 31 to which the electric blower 2 is fixed by an elastic packing 33.

  The support 29 is integrally provided with a guide member 35 that protrudes from the left and right sides of the communication hole 28 facing the side opposite to the electric blower 2 and extends linearly in the vertical direction. The guide member 35 includes a guide portion 36 having an increased height and spacer portions 37 extending on both sides thereof. In addition, a support hole 38 is provided in the center of the lower portion of the outer peripheral portion 30 of the support 29, and a coil spring 39 as an urging means is arranged in the vertical direction in the vicinity of the support hole 38. A stopper 41 is provided so as to protrude integrally with the screw hole 40 and the center.

  45 is a partition plate that constitutes a part of the air path opening / closing mechanism and has a substantially quadrangular outer shape and has an outer peripheral edge 46 at the outer peripheral portion. A plurality of vent holes 47 are provided, and upper portions of all the vent holes 47 are partition plate closing portions 44. The partition plate 45 is provided with a through hole 48 in the center of the lower portion, a protrusion 49 that protrudes downward from the outer peripheral edge 46 and fits into the support hole 38 of the support 29, and two portions on the upper left and right. It is fixed to the support 29 by screws (not shown) inserted into the screw holes 50.

  Reference numeral 51 denotes a flat opening / closing plate that constitutes a part of the air passage opening / closing mechanism and serves as the other air passage opening / closing plate sandwiched between the support 29 and the partition plate 45. The same number of ventilation holes 52 are provided at the same interval, and all lower portions of the ventilation holes 52 are opening / closing plate closing portions 53. The opening / closing plate 51 has a pair of slit-shaped guide holes 54 provided in the vertical direction along both sides of the vent hole 47. The guide hole 36 engages with the guide portion 36 of the guide member 35, and the opening / closing plate 51 can move up and down while being close to each other between the spacer portion 37 of the guide member 35 and the support 29. Held in a state.

  Further, in the lower center of the opening / closing plate 51, an opening / closing protrusion 55 protruding to the opposite side from a through hole 48 provided in the support 29, and a spring receiver 56 extending in an L-shape opposite to and below the opening / closing protrusion 55. Are provided integrally. A coil spring 39 disposed in the lower center of the support 29 is brought into contact with the spring receiver 56 and is urged so that the upper end of the opening / closing plate 51 can be raised to a position where it reaches the stopper 41 of the support 29. Yes.

  In such a positional relationship between the partition plate 45 and the opening / closing plate 51, when the opening / closing plate 51 is lowered in the direction of arrow A shown in FIG. Polymerization allows sufficient ventilation to flow in the direction of arrow B. In the state where the opening / closing plate 51 is at its highest position, the ventilation hole 47 overlaps with the opening / closing plate closing portion 53 and the ventilation hole 52 overlaps with the partition plate closing portion 44, respectively.

  Next, a state in which the case body 4 that is a dust container is coupled to the cleaner body 1 will be described with reference to FIGS. A semicircular case mounting portion 60 to which the case body 4 is detachably coupled is integrally provided at the front portion of the main body casing 3 constituting a part of the cleaner body 1. The case placement portion 60 has a housing recess 62 surrounded by a peripheral wall 61, and the lower portion of the case body 4 is fitted and placed therein. Furthermore, a handle support portion 64 having a fitting recess 63 is provided at the tip of the case placement portion 60.

  After the case body 4 is fitted into the housing recess 62 of the case mounting portion 60, the holding lid 8 is rotated downward with the pair of lid hinge portions 7 as fulcrums, whereby the inlet 11 of the main body connecting pipe 9 is provided. Is sandwiched between the ring-shaped lid seal 65 provided on the opening 33 and the packing 33 at the opening edge 32 of the cylindrical frame 31, and is hermetically coupled to the cleaner body 1.

  The case body 4, which is a dust container, has a container connection opening 79 that faces the body connection opening 26 through the ventilation path 25, a hollow cup body 66 that can be opened at the bottom, and a front side of the cup body 66. It has a handle 67 provided integrally. A locking hole 68 is provided in the upper end portion of the handle 67, and a locking claw 70 that is released by the lock release button 69 of the main body connecting tube 9 provided at the distal end portion of the holding lid 8 is engaged with the locking hole 68. Fixed together. Further, a locking projection 71 is provided at the lower end of the handle 67 and is positioned by being fitted into the fitting recess 63 of the handle support 64.

  Further, an arc-shaped front wall 72, side walls 73 provided on both sides thereof, an upper wall 75 and a rear wall 76 each having a substantially rectangular filter hole 74, and a bottom hinge on the lower surface of the cup body 66, respectively. A dust collection chamber 80 covered with six partition walls is provided by having a bottom lid 78 that can be rotated by the portion 77. The filter holes 74 in the upper wall 75 and the rear wall 76 are respectively provided with net filters 81 for capturing coarse dust. The bottom cover 78 located at the bottom of the cup body 66 is released by gravity due to the release of a lock mechanism (not shown) by pressing the discard button 88 of the handle 67 after the case body 4 is removed from the cleaner body 1. be able to.

  Above the dust collection chamber 80, a suction cylinder portion 83 having a circular suction air passage 82 joined to the lid seal 65 is provided, and a substantially L-shaped wind is provided at the end of the suction cylinder portion 83. One end of the path forming pipe 84 is joined. The other end of the air passage forming pipe 84 communicates with the inside of the dust collecting chamber 80 through a side wall hole 59 provided in one of the side walls 73 forming the dust collecting chamber 80. A bypass hole 85 arranged in a conical shape is provided at one end of the air passage forming pipe 84, and a cylindrical filter 86 for capturing coarse dust is attached to cover the bypass hole 85. The outside of the dust collection chamber 80 and the air passage forming pipe 84 inside the case body 4 is a negative pressure chamber 87.

  A pleated filter 90 bent to a predetermined thickness is detachably attached to the container connection opening 79 of the case body 4 inside a filter frame 89 having a substantially rectangular outer shape. The pleated filter 90 has a surface area widened by bending a fine filter member woven with fibers or the like into a crease shape or a corrugated shape. Fine dust that could not be captured by the filter 86 is captured. The fine dust capturing filter may be a thick filter other than a bowl-shaped or corrugated filter.

  An operating portion 91 is provided protruding from the center of the lower side of the filter frame 89 to which the pleated filter 90 is attached. The operating portion 91 is in a state where the opening / closing plate 51 is pressed downward against the biasing force of the coil spring 39 from the upper surface of the opening / closing protrusion 55 provided on the opening / closing plate 51. Due to the action of the operating portion 91, the positions of the vent holes 47 of the partition plate 45 and the vent holes 52 of the opening / closing plate 51 are completely superposed, and sufficient ventilation is obtained.

  Next, use of the vacuum cleaner constituted by these will be described. The presser lid 8 of the main body casing 3 of the vacuum cleaner main body 1 is rotated upward about the lid hinge portion 7 until an angle of 90 degrees or more is opened, and the front of the main body connection opening 26 is opened. The cup body 66 also has a handle 67 of the case body 4 which is a dust container in a detached state, and is placed in the receiving recess 62 of the case mounting portion 60 from above so that the container connection opening 79 is aligned with the main body connection opening 26. The engaging projection 71 of the handle 67 is fitted into the fitting recess 63 of the handle support 64 at the front of the main body casing 3 for positioning.

  At this time, the opening / closing protrusion 55 provided on the opening / closing plate 51 is pushed down to the lower end against the urging force of the coil spring 39 by the operating portion 91 provided in the filter frame 89 of the pleated filter 90. This operation can be easily performed by adjusting the weight of the case body 4 and the positioning to the housing recess 62. As a result, the partition plate 45 urged by the coil spring 39 and moved upward is moved downward, and the vent hole 47 of the partition plate 45 closed by the opening / closing plate closing portion 53 and the partition plate closing portion 44. And the ventilation holes 52 of the opening / closing plate 51 are superposed at positions that coincide with each other, and the case body 4 that is a dust container communicates with the intake side of the electric blower 2 through the ventilation path 25.

  Thereafter, by rotating the holding lid 8 toward the case body 4 so as to cover it, the case body 4 is pressed from above, and the locking hole 68 of the handle 67 has a lock at the tip of the holding lid 8. The lock claw 70 that can be released by the release button 69 is engaged, and the case body 4 is fixed to the cleaner body 1 having the presser lid 8.

  Next, the operation state of the vacuum cleaner configured as described above will be described. When the power switch of the operation button 14 provided in the hand operation unit 13 of the suction hose 10 is turned on, the electric blower 2 is driven. Due to the suction force generated by the electric blower 2, air mixed with dust sucked by the suction port body 17 from the surface to be cleaned such as the floor surface is held in the holding lid 8 via the extension pipe 15 and the suction hose 10. It flows into the inflow port 11. Furthermore, the air in which dust passes through the suction air passage 82 of the suction cylinder portion 83 included in the case body 4 from the inflow port 11 flows into the air passage formation pipe 84.

  A part of the air is filtered by the cylindrical filter 86 in the bypass hole 85 and flows into the negative pressure chamber 87, and a relatively large amount of dust (coarse dust) captured by the other part and the cylindrical filter 86. ) Passes through the air passage forming pipe 84 and flows into the dust collecting chamber 80 from the side wall hole 59. The mixed air flowing into the dust collection chamber 80 is filtered by the net filter 81 of the filter hole 74 provided in each of the upper wall 75 and the rear wall 76, and the coarse dust is accommodated in the dust collection chamber 80. At the same time, air containing fine dust that has not been captured here flows into the negative pressure chamber 87.

  The air in which fine dust that has flowed into the negative pressure chamber 87 through each route is mixed is then filtered by a fine mesh pleated filter 90 to capture the fine dust. The air that has been purified by passing through the pleated filter 90 flows out from the container connection opening 79 to the ventilation path 25. Further, this air passes through the ventilation hole 47 of the partition plate 45 which is one air passage opening / closing plate, the ventilation hole 52 of the opening / closing plate 51 which is the other air passage opening / closing plate, and the communication hole 28 of the support 29, and the suction opening. 22 flows into the electric blower 2. Then, after passing through the fan part 20 and the motor part 21 of the electric blower 2 and being discharged from the exhaust hole 23, the air is exhausted to the outside through the exhaust port 5 provided in the main body casing 3.

  Next, the case where the dust accommodated in the case body 4 which is a dust container is discarded will be described. After the suction hose 10 is removed from the suction port 11 by operating the body clamp 12 of the body connection tube 9, the lock release button 69 is pushed, and the engagement hole 68 and the lock claw 70 provided in the handle 67 of the case body 4 are pressed. Release the engagement. And it can remove from the cleaner body 1 by holding the handle 67 and lifting the case body 4. At this time, the engagement between the operating portion 91 provided on the filter frame 89 and the opening / closing protrusion 55 provided on the partition plate 45 is released, whereby the opening / closing plate 51 is raised by the biasing force of the coil spring 39, The upper side moves to a position where it collides with the stopper 41 of the support 29. Thereby, the vent hole 47 of the partition plate 45 and the ventilation hole 52 of the opening / closing plate 51 are closed by the opening / closing plate closing portion 53 and the partition plate closing portion 44.

  As described above, the opening and closing of the air passage opening / closing mechanism constituted by the support body 29, the partition plate 45, and the opening / closing plate 25 arranged in the ventilation passage 25 is performed by operating a lever or the like that protrudes to the outside of the cleaner body 1, for example. Even if it is not particularly limited, the case body 4 that is a dust container for dust disposal can be performed in conjunction with the vacuum cleaner main body 1 only by attaching and detaching it.

  Furthermore, the cleaner main body 1 including the air passage 25 is provided by positioning the air passage opening / closing mechanism and the operating portion 91 provided in the filter frame 89 for performing the opening / closing operation of the air passage opening / closing mechanism inside the air passage 25. Can be secured.

  Thereby, it is possible to prevent dust and some objects from entering the inside of the cleaner body 1. Moreover, even when electric power is accidentally supplied to the electric blower 2 in this state and a suction force is generated, the dust and the object can be prevented from being sucked.

  The case body 4 removed from the vacuum cleaner main body 1 is carried above a trash box (not shown), and the waste button 88 on the top of the handle 67 is pushed down to open the bottom lid 78 and store the dust contained in the case body 4. Can be dropped and discarded. Thereafter, by closing the bottom lid 78 and coupling the case body 4 to the cleaner body 1, the next cleaning operation can be started. When the case body 4 is coupled to the cleaner body 1, the opening / closing plate 51 is moved downward by pushing down the opening / closing protrusion 55 by the operating portion 91 provided on the filter frame 89 of the pleated filter 90. As a result, the positions of the ventilation holes 47 of the partition plate 45 and the ventilation holes 52 of the opening / closing plate 51 overlap, and the ventilation path 25 can be ventilated.

  In addition, in the said Example, the part of the partition plate closing part 44 and the opening / closing plate closing part 53 which have in the partition plate 45 and the opening / closing plate 51 can also comprise both or one by the mesh filter which has air permeability. In the case where both of the former are mesh filters, in the state where the case body 4 which is a dust container is coupled to the cleaner body 1, the positions of the vent holes 47 and the vent holes 52 are completely overlapped by these through holes. In addition to the ventilation, since the constant ventilation can be performed by the overlapped portion of the partition plate closing portion 44 and the opening / closing plate closing portion 53, both of which are constituted by mesh filters, the ability of the electric blower 2 can be further enhanced. it can.

  Further, when the case body 4 which is a dust container in this case is removed from the cleaner body 1, the vent hole 47 is an opening / closing plate closing portion 53 made of a mesh filter, and the ventilation hole 52 is also made of a mesh filter. Each of them is covered with a partition plate closing portion 44. As a result, almost the entire surface is substantially covered with the mesh filter, so that large dust and objects are prevented from entering the vacuum cleaner main body 1 and the electric blower 2, and in this state, the electric motor is driven for some reason. Even when the blower 2 is driven, sufficient air flows in, and even when no other air inflow mechanism for preventing heating is provided, the motor unit 21 does not burn out due to overload.

  Furthermore, in the case where only the latter one of the partition plate closing portion 44 and the opening / closing plate closing portion 53 included in the partition plate 45 and the opening / closing plate 51 is constituted by a mesh filter, the above-described partition plate closing portion 44 and the opening / closing operation are performed. A function close to that of both the plate closing portion 53 and the mesh filter can be obtained.

  Next, the air path opening / closing mechanism of the second embodiment of the vacuum cleaner will be described with reference to FIG. FIG. 10 shows the air path opening / closing mechanism in a state where the case body 4 which is a dust container is removed from the cleaner body 1. Reference numeral 101 denotes a partition plate which is one air passage opening / closing plate fixed to the main body connection opening 26 of the vacuum cleaner body 1, and the partition plate 101 has a triangular shape which penetrates around the rotation shaft 102. The vent holes 103 and the six partition plate closing portions 104 are arranged radially and alternately at equal intervals.

  In addition, an opening / closing plate 105, which is supported by the rotating shaft 102 and is the other air path opening / closing plate, is closely attached to the partition plate 101 so as to be rotatable. The opening / closing plate 105 is provided with twelve ventilation holes 106 having the same shape as the vent hole 103 radially about the rotation shaft 102, and these six ventilation holes 106 and the mesh filter 107 that pass therethrough are stretched. The six vent holes 106 are alternately arranged. The six ventilation holes 106 penetrating through are in a state of being completely overlapped with the partition plate closing portion 104, and ventilation by this portion is not performed. Further, the six ventilation holes 106 to which the mesh filter 107 is stretched are completely overlapped with the six ventilation holes 103 that pass therethrough, and the ventilation through the mesh filter 107 is possible.

  Thereby, it is possible to prevent large dust or any object from entering the interior of the cleaner body 1. Moreover, even when electric power is accidentally supplied to the electric blower 2 in this state and suction force is generated, the above dust and objects can be prevented from being sucked. Furthermore, since a certain amount of air inflow is ensured by the presence of the ventilation hole 106 in which the mesh filter 107 is stretched, the motor portion 21 can be prevented from being burned.

  In addition, a coil spring 110 is stretched between a fixed shaft 108 fixed to the partition plate 101 and a moving shaft 109 fixed to the outer peripheral portion of the opening / closing plate 105, so that the positional relationship between the vent hole 103, the vent hole 106, and the like. Is in a stable state. On the outer periphery of the opening / closing plate 105, one opening / closing protrusion 111 protrudes toward the case body 4 described above.

  Next, a state in which the case body 4 is coupled to the cleaner body 1 will be described. When the case body 4 is coupled to the cleaner body 1 from above, the opening / closing projection 111 is formed by the operating portion 91 protruding from the filter frame 89 described above. The coil spring 110 is pushed down in the direction of arrow C against the urging force of the coil spring 110 and is turned to a fixed state. Thereby, the ventilation hole 103 of the partition plate 101 and the ventilation hole 106 of the opening / closing plate 105 that are mutually penetrated completely overlap, and the air sucked from the suction port body 17 can be sufficiently ventilated. The partition plate closing portion 104 of the partition plate 101 in this state overlaps with the ventilation hole 106 in which the mesh filter 107 is stretched, but has no influence on the sucked air.

  In addition, the part of the partition plate closing part 104 can also be made the same as the ventilation hole 106 with the mesh filter 107 stretched. Thereby, in the state which attached the case body 4 to the cleaner body 1, in addition to the ventilation of the ventilation hole 103 and the ventilation hole 106, the ventilation quantity of the ventilation path 25 can be increased further.

  Moreover, the air-path opening / closing mechanism of the 3rd Example of a vacuum cleaner is demonstrated with FIG. Reference numeral 115 denotes a partition plate which is one air passage opening / closing plate fixed to the main body connection opening 26 of the cleaner body 1, and the partition plate 115 is provided with five vent holes 116 arranged in parallel with each other. . Five closing lids 117 which are the other air path opening / closing plates are attached to these ventilation holes 116 so as to be rotatable by a rotation shaft 118. These closing lids 117 are connected to each other at both end portions by a connecting string 119. A rotating arm 120 as an opening / closing protrusion is attached to the rotating shaft 118 of the uppermost closing lid 117 by being biased by a coil spring 121 in the direction of an arrow D that closes the vent hole 116 with the closing lid 117. ing.

  With these configurations, when the case body 4 is detached from the cleaner body 1, the air holes 116 are substantially closed by the respective closure lids 117, but when the case body 4 is coupled to the cleaner body 1. In this case, the operating portion 91 protruding from the filter frame 89 of the case body 4 pushes and rotates the rotating arm 120 from above, thereby rotating the closing lid 117 close to an angle of 90 degrees. 116 is opened to allow ventilation. Therefore, the ventilation path 25 which is a connection part of the cleaner main body 1 and the case body 4 can be opened and closed by the attachment / detachment state of the case body 4.

  In addition, the closing lid | cover 117 can be comprised with the mesh filter enclosed by the outer frame. In this case, in a state where the closing lid 117 is closed by removing the case body 4, even when electric power is accidentally supplied to the electric blower 2 and suction force is generated, large dust and objects are prevented from being sucked. In addition, since a constant amount of air inflow is ensured by the closing lid 117 formed of a mesh filter, it is possible to prevent the motor portion 21 from being burned without providing another burnout prevention mechanism.

  Further, by removing the frame portion of the partition plate 115 between the adjacent closure lids 117 constituted by these mesh filters and bringing the end portions of the parallel closure lids 117 close to each other, the case body 4 is removed. Can cover almost the entire surface of the ventilation path 25 with a breathable mesh filter.

  In all the embodiments described above, the air path opening / closing mechanism is configured by the other air path opening / closing plate that is movable by being energized by a coil spring or the like with respect to one fixed air path opening / closing plate. However, it is also possible to open and close the ventilation path by making them movable with respect to each other.

  Moreover, in the said Example, by connecting the case body which is a dust collecting container to a cleaner body, the ventilation path between the case body and the cleaner body which interlock | cooperates with this is open | released by an air path opening / closing mechanism. However, the present invention is not limited to this, and the operator can manually open and close the ventilation path by operating the air path opening / closing mechanism when necessary. In this case, there is no need for an urging means such as an actuating portion that is interlocked with the case body coupling operation or a coil spring for closing the ventilation path.

  Furthermore, it is not always necessary to provide a plurality of ventilation holes or ventilation holes provided in the above embodiment in the air path opening / closing mechanism, and each may be provided one by one.

  The vacuum cleaner of the present invention is not limited to this type as long as there is a vacuum cleaner body with a built-in electric blower and a dust container which is a case body that can be detachably coupled to the vacuum cleaner body.

It is an external appearance perspective view of the vacuum cleaner by this invention. (Example 1) It is a perspective view showing the combined state of the cleaner body and dust container shown in FIG. It is a perspective view showing the vacuum cleaner main body which removed the dust container shown in FIG. It is a perspective view of the dust container of this invention shown in FIG. It is a partial cross section figure of the state which combined the vacuum cleaner main body and dust container of the vacuum cleaner shown in FIG. It is a perspective view of the support body (air path opening / closing mechanism) which has in the cleaner body shown in FIG. It is a perspective view of the partition plate (air path opening / closing mechanism) which has in the cleaner body shown in FIG. FIG. 4 is a perspective view of an opening / closing plate (air path opening / closing mechanism) included in the cleaner body shown in FIG. 3. It is sectional drawing which shows the coupling | bonding state of the cleaner main body and dust container shown in FIG. It is a perspective view of the air path opening / closing mechanism of the vacuum cleaner which is another Example by this invention. (Example 2) It is a perspective view of the air path opening / closing mechanism of the vacuum cleaner which is another Example by this invention. Example 3

Explanation of symbols

1 Vacuum Cleaner Body 2 Electric Blower 4 Case Body (Dust Container)
25 Ventilation path 26 Main body connection opening 29 Support body (air path opening / closing mechanism)
39, 110, 121 Coil spring (biasing means)
45, 101, 115 Partition plate (one air passage opening / closing plate, air passage opening / closing mechanism)
47, 103, 116 Ventilation holes 51, 105, 117 Opening / closing plate (the other air passage opening / closing plate, air passage opening / closing mechanism)
52, 106 Ventilation holes 55, 111, 120 Opening / closing protrusions 79 Container connection opening 90 Pleated filter (filter part)
91 Actuator

Claims (4)

A vacuum cleaner body including an electric blower; and a dust container detachably coupled to the vacuum cleaner body, wherein the dust container is connected to the dust container via the ventilation path in a coupled state. In the vacuum cleaner communicating with the intake side of the electric blower,
An electric vacuum cleaner characterized in that an air passage opening / closing mechanism for opening and closing the air passage is provided in the main body of the vacuum cleaner.   The air passage opening / closing mechanism is interlocked with the operation of coupling the dust container to the cleaner body so that the air passage is opened when the cleaner body and the dust container are joined and the air passage is closed when the cleaner body is not joined. The electric vacuum cleaner according to claim 1.   3. The electric vacuum cleaner according to claim 1, wherein the air passage opening / closing mechanism includes a closing portion for closing the air passage, and the closing portion has air permeability.   The electric vacuum cleaner according to any one of claims 1 to 3, wherein an air passage opening / closing mechanism and an operating part for opening and closing the air passage opening / closing mechanism are arranged in the air passage.

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