JP2005348911A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner, even if a floating force by exhaust air is applied to a body part, retaining an approximately fixed distance between a suction port and a surface to be cleaned and providing an appropriate suction force. <P>SOLUTION: This vacuum cleaner 100 is provided with a body part 1 incorporating an electric blower 13 generating suction air and having an exhaust outlet 16 exhausting the exhaust air from the electric blower 13 to the surface to be cleaned in its lower surface, and a suction port body 2 communicating with the electric blower 13 and having the suction port 22 sucking dust on the surface to be cleaned by suction in its lower surface. The suction port body 2 is vertically displaceably connected to the body part 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention generally relates to a vacuum cleaner, and more particularly to a floating vacuum cleaner including a main body portion that floats from a floor surface by exhaust and a suction port that communicates with the main body portion.

  A conventional vacuum cleaner is described in, for example, Japanese Patent Laid-Open No. 11-155711 (Patent Document 1). FIG. 15 is a schematic cross-sectional view showing the vacuum cleaner described in the above publication.

As shown in FIG. 15, the vacuum cleaner is opened on the lower surface of the main body 10, the main body 10 containing the electric blower 101, the suction port 102 communicating with the negative pressure side of the electric blower 101, and the electric blower 101. And an exhaust port 103 that communicates with the positive pressure side and exhausts the exhaust air. The skirt portion 105 is provided between the suction port 102 and the exhaust port 103 on the lower surface of the main body unit 100 so as to surround the exhaust port 103, and allows the exhaust air to pass between the cleaning surface 104 and the main body unit. A floating force is applied to 10. The wheel 107 is rotatably supported by a rotating shaft 106 along the horizontal direction. The elongated operating body 108 has a gripping portion at one end, and is attached to the main body 10 so that the other end is positioned above the wheel 107 and the gripping portion is rotatable in the vertical direction.
Japanese Patent Application Laid-Open No. 11-155711

  However, in the configuration of the conventional vacuum cleaner shown in FIG. 15, the main body and the suction port body are integrally formed. For this reason, the suction port rises from the surface to be cleaned as the main body floats. Thereby, there existed a tendency for the suction power of a vacuum cleaner to fall.

  Moreover, in the structure of the conventional vacuum cleaner, since a dust collection chamber is installed in the main-body part, a main body enlarges. Thereby, there existed a problem that it was difficult to operate the conventional vacuum cleaner.

  Therefore, one object of the present invention is to obtain an appropriate suction force by keeping the distance between the suction port and the surface to be cleaned substantially constant even when a floating force due to exhaust air acts on the main body. Is to provide a simple vacuum cleaner.

  Another object of the present invention is to provide a vacuum cleaner that is small and has good operability.

  An electric vacuum cleaner according to the present invention has a built-in electric blower for generating intake air, a main body having an exhaust port on the lower surface for exhausting exhaust air from the electric blower toward a surface to be cleaned, and an electric blower. And a suction port body having a suction port on the lower surface thereof for communicating and sucking dust on the surface to be cleaned by suction. The suction port body is connected to the main body portion so as to be displaceable in the vertical direction.

  According to the vacuum cleaner of the present invention, since the suction port body is connected to the main body portion so as to be vertically displaceable, even if the main body portion is lifted by the exhaust pressure, the suction port body and the surface to be cleaned are The distance between the suction port body can be kept substantially constant, and an appropriate suction force can be secured.

  In the vacuum cleaner according to the present invention, the connection structure for connecting the suction port body to the main body portion follows the movement of the main body portion on the surface to be cleaned, and the suction port body moves on the surface to be cleaned. It is preferable that it is comprised so that it can do.

  By comprising in this way, while being able to keep the distance between a main-body part and a suction inlet body substantially constant, the smooth motion of a suction inlet body is realizable at the time of operation of a main-body part.

  The vacuum cleaner according to the present invention further includes a connecting member that connects the suction port body to the main body portion, and an engagement portion between the connecting member and the suction port body or an engagement portion between the connecting member and the main body portion. It is preferable that the connecting member is rotatably attached to at least one of the portions.

  By comprising in this way, since a connection member rotates centering on the main-body part or the engaging part of a suction inlet body, the distance between a main-body part and a suction inlet body can be kept substantially constant, and a main body A smoother movement of the suction port body can be realized during operation of the section. Furthermore, the degree of parallelism between the suction port and the floor surface when the main body part rises by making the engaging part of the connecting part and the suction port body or the engaging part of the connecting member and the main body part rotatable. Therefore, the above-described configuration effectively works to ensure an appropriate suction force.

  Furthermore, the electric vacuum cleaner according to the present invention further includes an elastic member disposed between the main body portion and the suction port body, and the suction port body is urged toward the surface to be cleaned by the elastic member. Preferably it is configured.

  In this case, since the suction port body is biased downward by an elastic member disposed between the main body portion, the suction port can be brought into close contact with the surface to be cleaned such as carpet, and the suction capacity Can be prevented from decreasing.

  In the vacuum cleaner according to the present invention, the suction port body has an exhaust passage for collecting at least a part of the exhaust air discharged from the exhaust port, and the exhaust passage is configured to communicate with the suction port. It is preferable.

  By providing the exhaust passage in the suction port body in this manner, it is possible to prevent the suction port body from being lifted from the surface to be cleaned due to the exhaust from the main body passing through the lower surface of the suction port body, and the suction capability is improved. It can be stabilized.

  Further, the vacuum cleaner according to the present invention includes an operation gripping part rotatably attached to the main body part, and a dust collection chamber for separating and storing dust from the intake air sucked through the suction port. Furthermore, it is preferable that the dust collection chamber is disposed in the operation grip.

  By providing the dust collection chamber in the operation gripping portion in this manner, the main body portion can be reduced in size and operability can be improved.

  In the electric vacuum cleaner configured as described above, the operation gripping part is attached to the main body via a rotating shaft, and an intake passage is formed inside the rotating shaft. It is preferable to form at least a part of a path for guiding the intake air sucked more into the dust collection chamber and a path for guiding the intake air discharged from the dust collection chamber to the electric blower.

  By comprising in this way, it is not necessary to provide the pipe member which connects the holding part for operation and the main-body part separately, and the whole vacuum cleaner can be reduced in weight.

  In addition, the vacuum cleaner of the present invention includes an operation gripping portion that is rotatably attached to the main body portion, and a wheel that is disposed near the attachment portion of the operation gripping portion to the main body portion and supports the main body portion. It is preferable to further comprise.

  In this case, by installing a wheel in the vicinity of the attachment part of the operation gripping part, the power supply of the main body part is stopped and the main body part is covered by the wheel even when the main body part is not lifted from the surface to be cleaned. It can be moved smoothly on the cleaning surface.

  The vacuum cleaner of the present invention may further include wheels disposed at the front end portion and the rear end portion of the main body portion.

  In this case, since the wheels are installed before and after the main body, even when an excessive load is applied to the operation gripping part during operation of the electric vacuum cleaner, the wheels first contact the surface to be cleaned. The operability of the main body does not deteriorate.

  As described above, according to the present invention, an appropriate suction force can be obtained while keeping the distance between the suction port and the surface to be cleaned substantially constant even when the floating force due to the exhaust air acts on the main body. .

  Embodiments of a vacuum cleaner according to the present invention will be described below with reference to the drawings. In the following description, when the user of the vacuum cleaner performs cleaning by operating the grip portion, the direction in which the user pushes the main body of the vacuum cleaner is the front, the opposite direction is the rear, and the user is The right side position is defined as right.

  1 to 4 show a schematic configuration of the electric vacuum cleaner according to the first embodiment of the present invention. 1 is a perspective view of the vacuum cleaner according to the first embodiment of the present invention as viewed from the right front, and FIG. 2 is a perspective view of the vacuum cleaner according to the first embodiment of the present invention as viewed from the right rear. 3 is a cross-sectional view showing a part of the cross section along the horizontal direction of the vacuum cleaner shown in FIGS. 1 and 2, and FIG. 4 is a side cross section along the vertical direction of the vacuum cleaner shown in FIGS. FIG. 5 is a partially enlarged side sectional view showing a portion indicated by reference numeral 24 in FIG. 4 in an enlarged manner.

  As shown in FIGS. 1 and 2, the vacuum cleaner 100 according to the present embodiment mainly includes a main body portion 1, a suction port body 2, and an operation grip portion 3.

  As shown in FIG. 1 and FIG. 2, the main body 1 is covered with a cover body 11. As shown in FIGS. 3 and 4, the main body 1 includes an electric blower 13 for generating intake air, a dust collection chamber 14 for storing dust sucked in by an air flow generated by the electric blower 13, and an electric drive unit. A pressure equalizing chamber 15 that temporarily stores the exhaust flow from the blower 13 through the blower chamber outlet 18 and equalizes the pressure of the exhaust flow to the outside of the main body is provided. The main body portion 1 is provided with an exhaust outlet 16 for discharging the exhaust flow whose pressure is equalized in the pressure equalizing chamber 15 to the outside of the main body so as to blow on the floor surface 4 as a surface to be cleaned.

  As shown in FIG. 4, the suction port body 2 includes a suction port 22 that opens toward the floor surface 4 and sucks dust on the floor surface 4 by the intake air generated by the electric blower 13. As shown in FIG. 3, an intake path 12 is provided between the suction port body 2 and the main body 1 to carry dust sucked from the suction port 22 to the dust collection chamber 14 together with intake air. Further, the end of the intake path 12 on the suction port body 22 side and the suction port body 2 are connected to each other by a connecting portion 21 so as to be freely rotatable. Furthermore, as shown in FIG. 4, wheels 23 are provided at the lower rear end portion of the suction port body 2 for improving the traveling performance.

  As shown in FIG. 2, the operation grip 3 includes a handle (not shown) gripped by a user for operating the vacuum cleaner and a force applied to operate the handle 1 And a rotating part 32 formed by fitting the handle part and the extension pipe 31 to the main body 1 in a rotatable manner. Further, a wheel 33 is provided behind the rotating portion 32 so as not to impair operability even when the main body 1 is not lifted.

  In the vacuum cleaner 100 configured as described above, each connection structure of the main body 1, the suction port body 2, and the operation grip 3 will be described.

  First, a connection structure between the main body 1 and the suction port 2 will be described. As shown in FIGS. 1 to 3, the suction port body 2 is disposed in front of the main body 1. As shown in FIG. 5, the connecting portion 24 is configured by engaging the holding portion 25 and the locking portion 26. As shown in FIG. 3, the holding portion 25 is a rib that is provided at the center of the front end surface of the main body 1 and has a substantially U shape. The locking portion 26 is a rib provided in the center of the rear end surface of the suction port body 2 as shown in FIG. 3 and having a substantially inverted L shape as shown in FIGS. 4 and 5.

  In the connecting portion 24 configured in this way, as shown in FIG. 5, the holding portion upper surface 27 a which is a U-shaped upper surface of the holding portion 25 and the locking portion 26 are substantially horizontal from the rear end surface of the suction port body 2. A predetermined gap is provided along the vertical direction or the vertical direction between the locking portion lower surface 28 which is the lower surface of the horizontal portion protruding in the direction. Therefore, the suction port body 2 can be displaced in the vertical direction or the vertical direction with respect to the main body 1. In addition, by providing a predetermined distance along the vertical direction or the vertical direction between the holding portion lower surface 27b and the lower end portion 29 of the vertical portion extending in the substantially vertical direction or the substantially vertical direction of the locking portion 26, It is possible to prevent the connecting portion 24 from being detached when cleaning the floor surface 4 having a step.

  Instead of the configuration of the connecting portion in the above embodiment, the locking portion may have an L shape, and this locking portion may be engaged with the U-shaped holding portion from below, or Alternatively, an L-shaped or inverted L-shaped locking portion may be provided on the main body portion side, and a U-shaped holding portion may be provided on the suction port body side.

  Next, a connection structure between the main body 1 and the operation grip 3 will be described. The operation grip 3 is arranged behind the main body 1 as shown in FIGS. 1 and 2, and a handle (not shown) of the operation grip 3 is provided at one end as shown in FIGS. A rotation shaft 34 is provided at the other end. The rotating portion 32 is configured by fitting the rotating shaft 34 to a bearing portion 35 (shaded portion shown in FIG. 3) provided at the rear end portion of the main body portion 1. In this way, in the rotation part 32, the operation gripping part 3 is connected to the main body part 1 so that the handle part can be rotated around the rotation shaft 34 in the height direction.

  Operation | movement of the vacuum cleaner 100 comprised as mentioned above is demonstrated.

  When a power switch (not shown) of the vacuum cleaner is turned on, intake air is generated by the electric blower 13, and the intake air flow including dust sucked from the floor surface 4 by the intake air is supplied from the intake port 22 to the intake suction chamber 30. And flows into the dust collecting chamber 14 through the intake passage 12. Here, the dust contained in the intake air flow is removed by the action of the dust removal filter 17 provided at the outlet of the dust collecting chamber 14, and the purified intake air flow flows into the electric blower 13. After passing through the electric blower 13, the discharged exhaust flow flows into the pressure equalization chamber 15 through the blower chamber outlet 18. Then, the exhaust flow once accumulated in the pressure equalizing chamber 15 is uniformly blown from the exhaust outlet 16 to the floor surface, and the main body 1 is floated. At this time, a predetermined space is provided between the holding portion upper surface 27 a and the locking portion lower surface 28, and between the holding portion lower surface 27 b and the lower end portion 29, so that the suction port body 2 is located with respect to the main body 1. Therefore, the suction port body 2 does not rise, the distance from the floor surface 4 is kept substantially constant, and the suction capacity from the suction port 22 is reduced. Absent.

  Moreover, if the wheel 33 provided below the main body 1 is installed so as to be lifted from the floor surface 4 when the main body 1 is levitated by exhaust, it may hinder operability during driving. Absent. Furthermore, since the wheel 33 is attached to the rear and below the rotating portion 32, the wheel 33 remains on the floor surface 4 even when the main body 1 is not lifted from the floor surface 4, such as when the electric blower 13 is not operating. The vacuum cleaner can be moved smoothly because it is in contact with. In this case, if at least the wheel 33 is disposed in the vicinity of the attachment portion of the operation gripping portion 3 to the main body portion 1, the above-described effects can be achieved.

  In the following description, only the configuration and operation different from those of the first embodiment will be described.

  6 and 7 show a schematic configuration of the electric vacuum cleaner 200 according to the second embodiment of the present invention. FIG. 6 is a right side view of the electric vacuum cleaner according to the second embodiment of the present invention during non-operation, and FIG. 7 is a right side view of the electric vacuum cleaner according to the second embodiment of the present invention during ascent. .

  In the present embodiment, as shown in FIG. 6, the connection structure between the main body 1 and the suction port 2 includes a main body connecting shaft 41 provided on the right side of the main body 1 and the right side of the suction port 2. And a connection body 43 that is rotatably attached to both of these axes and connects the main body 1 and the suction port body 2.

  In the vacuum cleaner 200 configured as described above, when an electric blower (not shown) is operated, an exhaust flow 44 from an exhaust outlet (not shown) is discharged as shown by an arrow as shown in FIG. The main body 1 rises. At this time, as the main body 1 floats, the connecting body 43 rotates around the main body connecting shaft 41 and the suction connecting shaft 42, so that the suction port body 2 is in contact with the floor surface 4 without rising. Can be maintained, and the distance between the main body 1 and the suction port 2 can be made substantially constant. Moreover, since the connection body 43 can be rotated on the main body connection shaft 41 and the suction connection shaft 42, the suction port main body portion 2 can maintain a good suction force without being lifted with respect to the floor surface 4.

  FIG. 8 is a side sectional view showing a part of the side section along the vertical direction of the electric vacuum cleaner 300 according to the third embodiment of the present invention.

  In the present embodiment, the cover body 51 that forms the upper surface of the main body 1 is greatly expanded forward so as to cover the upper portion of the suction port body 2. A lower elastic body locking part 52 having a convex shape upward on the upper surface of the suction port body 2, and an upper elastic body locking part 53 having a convex shape upward and downward on the lower surface of the cover body 51. It arrange | positions between the main-body part 1 and the suction inlet 2. At this time, the lower elastic body locking part 52 and the upper elastic body locking part 53 are arranged to face each other. A coil spring 54 as an elastic member is provided between the lower elastic body locking portion 52 and the upper elastic body locking portion 53, and the lower elastic body locking portion 52 and the upper elastic body locking portion 53 are coil springs. 54 are elastically supported so as to act in the repulsive direction. For this reason, not only when cleaning flooring etc. as a surface to be cleaned, but also when cleaning a carpet or the like, for example, when it is difficult to always keep the distance between the suction port 22 and the floor surface 4 almost constant. Even so, the suction port body 2 is always urged toward the floor surface 4 by the main body 1 via the coil spring 54, so that the distance between the suction port 22 and the floor surface 4 is made substantially constant. It is possible to maintain a high suction capacity regardless of the floor condition.

  FIG. 9 is a side sectional view showing a side section along the vertical direction of the suction port body in the electric vacuum cleaner 400 according to the fourth embodiment of the present invention.

  In the present embodiment, an exhaust accommodating chamber 61 opened to the floor surface 4 side is provided behind the lower surface of the suction port body 2. The exhaust accommodating chamber 61 is provided with an exhaust passage 64 that communicates with the intake suction chamber 30. Here, the exhaust flow 62 discharged from the exhaust port of the main body 1 to the suction port body 2 side passes through the lower space of the suction port body 2 as shown by the arrow, and passes through the exhaust recovery port 63 to the exhaust storage chamber. 61 is taken in. The exhaust flow 62 taken into the exhaust storage chamber 61 flows into the intake suction chamber 30 through the exhaust passage 64 by the suction force from the intake suction chamber 30 which is negative pressure, and is collected in the main body 1. Since the exhaust passage 64 communicates with the suction port 22 in this way, the exhaust flow 62 can be collected without the suction port body 2 being lifted by the exhaust from the main body 1, and the suction capability is stabilized. be able to. Further, it is possible to prevent the dust existing on the floor surface in front of the suction port body 2 from being blown off by the exhaust flow 62.

  FIGS. 10-14 shows schematic structure of the vacuum cleaner in the 5th Embodiment of this invention. FIG. 10 is a perspective view of the electric vacuum cleaner according to the fifth embodiment of the present invention as viewed from the right front, and FIG. 11 is a perspective view of the electric vacuum cleaner according to the fifth embodiment of the present invention as viewed from the left front. 12 is a side sectional view showing a side section along the vertical direction of the vacuum cleaner shown in FIGS. 10 and 11, and FIG. 13 is a part of a section along the horizontal direction of the vacuum cleaner shown in FIGS. FIG. 14 is a longitudinal sectional view showing a longitudinal section along the vertical direction around the dust collector in the vacuum cleaner shown in FIGS. 10 and 11.

  In the vacuum cleaner 500 of this embodiment, as shown in FIG. 12, the main body 1 includes wheels 74 and 33 that are rotatable at the front end and the rear end, respectively. Although not shown, a plurality of wheels 74 and 33 are provided in the left-right direction of the main body 1. Further, the wheels 74 and 33 are arranged so as to be lifted from the floor surface 4 as the main body 1 is lifted by the operation of the electric blower 13. Here, when a large force in the direction toward the floor surface 4 is suddenly applied to the handle portion 36 of the operation gripping portion 3, the main body portion 1 is pressed against the floor surface 4 by this force, and the main body portion 1 is in a floating state. Is interrupted and temporarily comes into contact with the floor surface 4. At this time, the main body 1 first has either the wheel 74 or the wheel 33 in contact with the floor surface 4, but the wheel 74 or the wheel 33 rolls on the floor surface 4. Operability can be maintained.

  Further, in the vacuum cleaner 500 of the present embodiment, as shown in FIGS. 10 and 11, the operation grip 3 is provided with a dust collector 8 that collects the sucked dust. As shown in FIG. 12, the dust collector 8 includes a dust collection chamber 77 for storing dust therein, an exhaust cylinder 78 for separating dust from intake air, and an exhaust cylinder outlet chamber 79 as an outlet of the exhaust cylinder 78 above the dust collection chamber 77. And.

  The dust collector 8 has an inlet and an outlet for the intake air flow generated by the electric blower 13, and as shown in FIGS. 10 and 11, these are an inlet path 71 that constitutes the inlet part and an outlet path that constitutes the outlet part. 72. As shown in FIG. 10, the inlet path 71 communicates with the intake path 12 and constitutes a path for sending an intake flow including dust sucked in by the suction port body 2 to the dust collector 8. Further, as shown in FIG. 11, the outlet path 72 communicates with the main body inlet 75, dust is removed by the dust collector 8, and the cleaned intake flow is guided to the main body 1. By providing the dust collecting chamber 77 in the operation gripping portion 3 as described above, the main body 1 can be reduced in size and the operability can be improved.

  Further, as shown in FIG. 12, the fitting shaft 9 as the rotation shaft is connected to the main body 1, the operation grip 3, and the operation grip 3 so that the operation grip 3 can be rotated in the vertical direction with respect to the main body 1. It is fitted between. As shown in FIGS. 13 and 14, the fitting shaft 9 can communicate with the hollow right rotation shaft 82 and the left rotation shaft 83 with respect to the intake passage 12 and the main body inlet 75 of the main body 1, respectively. And has a right fitting shaft chamber 76 and a left fitting shaft chamber 80 therein. The right fitting shaft chamber 76 and the left fitting shaft chamber 80 are partitioned by a partition wall 81 at a substantially intermediate portion in the axial direction of the fitting shaft 9. Further, as shown in FIG. 14, the right fitting shaft chamber 76 is coupled so that the upper portion thereof communicates with the inlet passage 71, and the upper portion of the left fitting shaft chamber 80 communicates with the outlet passage 72. Are so coupled. Further, as shown in FIGS. 12 and 13, the fitting shaft 9 has an extension portion 37 at the rear portion thereof. One end portion of the extension pipe 31 is fitted to the extension portion 37. The vacuum cleaner can be operated by operating the handle portion 36 constituting the other end portion of the extension pipe 31.

  In the vacuum cleaner 500 of the present embodiment, when a power switch (not shown) of the vacuum cleaner is turned on, the intake air sucked by the intake air of the electric blower 13 passes through the intake path 12 and the right rotation shaft 82. Then, it flows into the right fitting shaft chamber 76. Since the right fitting shaft chamber 76 is partitioned from the left fitting shaft chamber 80 by a partition wall 81 at a substantially intermediate portion in the axial direction of the fitting shaft 9, the intake flow flows into the inlet passage 71 located above it. , And sent to the dust collector 8. The intake air flow that enters the dust collector 8 first flows from the dust collection chamber 77 through the exhaust pipe 78 to the exhaust pipe outlet chamber 79. At this time, the exhaust pipe 78 removes dust from the intake air flow. The dust exhausted and cleaned exhaust pipe outlet chamber 79 is sent from the main body inlet 75 to the electric blower 13 through the outlet passage 72, the left fitting shaft chamber 80, and the left rotation shaft 83. Further, the flow of the exhaust flow after the electric blower 13 is the same as that in the first embodiment.

  Thus, since the intake passage is formed in the hollow right rotation shaft 82 and the left rotation shaft 83, the space between the intake passage 12 and the inlet passage 71, and between the outlet passage 72 and the main body inlet 75. There is no need to provide a separate pipe member in between. For this reason, since the number of parts can be reduced, the whole vacuum cleaner can be reduced in weight and operability can be improved.

  The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the scope of claims, and includes all modifications and variations within the meaning and scope equivalent to the scope of claims.

It is the perspective view which looked at the vacuum cleaner of the 1st Embodiment of this invention from the right front. It is the perspective view which looked at the vacuum cleaner of the 1st Embodiment of this invention from the right rear. It is a cross-sectional view which shows a part of cross section along the horizontal direction of the vacuum cleaner shown in FIG. 1 and FIG. It is a sectional side view which shows a part of side cross section along the perpendicular direction of the vacuum cleaner shown in FIG. 1 and FIG. It is a partial expanded side sectional view which expands and shows the part shown with the code | symbol 24 of FIG. It is a right view at the time of the non-operation of the vacuum cleaner of the 2nd Embodiment of this invention. It is a right view at the time of the floating of the vacuum cleaner of the 2nd Embodiment of this invention. It is a sectional side view which shows a part of side cross section along the perpendicular direction of the vacuum cleaner of the 3rd Embodiment of this invention. It is a sectional side view which shows the side cross section along the perpendicular direction of the suction inlet in the vacuum cleaner of the 4th Embodiment of this invention. It is the perspective view which looked at the vacuum cleaner of the 5th Embodiment of this invention from the right front. It is the perspective view which looked at the vacuum cleaner of the 5th Embodiment of this invention from the left front. It is a sectional side view which shows the side cross section along the perpendicular direction of the vacuum cleaner shown in FIG. 10 and FIG. It is a cross-sectional view which shows a part of cross section along the horizontal direction of the vacuum cleaner shown in FIG. 10 and FIG. It is a longitudinal cross-sectional view which shows the longitudinal cross section along the perpendicular direction of the dust collector periphery in the vacuum cleaner shown in FIG. 10 and FIG. It is a schematic sectional drawing which shows the conventional vacuum cleaner.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Main-body part 2: Suction port 3: Grip part for operation 4: Floor surface 8: Dust collector 9: Fitting shaft 11, 51: Cover body 12: Suction passage 13: Electric blower 14, 77: Dust collection chamber 16: Exhaust outlet 22: Suction ports 23, 33, 74: Wheel 24: Connection part 25: Holding part 26: Locking part 27a: Holding part upper surface 27b: Holding part lower surface 28: Locking part lower surface 29: Lower end part 30: Intake suction chamber 31: Extension pipe 32: Rotating part 34: Rotating shaft 35: Bearing part 41: Main body connecting shaft 42: Suction connecting shaft 43: Connecting body 52: Lower elastic body locking part 53: Upper elastic body locking Portion 54: Coil spring 61: Exhaust chamber 62: Exhaust flow 63: Exhaust recovery port 64: Exhaust passage 71: Inlet passage 72: Outlet passage 76: Right fitting chamber shaft 78: Exhaust tube 79: Exhaust tube outlet chamber 80: Left Fitting shaft chamber 81: partition wall 82: right rotation shaft 83: left rotation shaft 100, 200, 300, 00,500: vacuum cleaner

Claims (9)

A main body unit that includes an electric blower that generates intake air and has an exhaust port on the lower surface that discharges exhaust air from the electric blower toward the surface to be cleaned;
A suction port body having a suction port on its lower surface that communicates with the electric blower and sucks dust on the surface to be cleaned by suction;
The vacuum inlet is connected to the main body so as to be movable in the vertical direction.   The connection structure for connecting the suction port body to the main body portion is configured such that the suction port body can move on the surface to be cleaned following the movement of the main body portion on the surface to be cleaned. The vacuum cleaner according to claim 1, wherein A connecting member that connects the suction port to the main body;
The connection member is rotatably attached to at least one of an engagement portion between the connection member and the suction port body or an engagement portion between the connection member and the main body portion. Or the vacuum cleaner of Claim 2.   The elastic member arrange | positioned between the said main-body part and the said suction inlet body is further provided, and the said suction inlet body is urged | biased toward the to-be-cleaned surface by the said elastic member. An electric vacuum cleaner given in any 1 paragraph.   The said suction port body has an exhaust passage which collect | recovers at least one part of the exhaust air discharged | emitted from the said exhaust port, The said exhaust passage is comprised so that it may connect with the said suction port. Item 5. The vacuum cleaner according to any one of Items 1 to 4. An operation gripping part rotatably attached to the main body part;
A dust collection chamber for separating and storing dust from the intake air sucked through the suction port;
The vacuum cleaner according to any one of claims 1 to 5, wherein the dust collection chamber is disposed in the operation gripping portion.   The operation gripping portion is attached to the main body via a rotation shaft, and an intake passage is formed inside the rotation shaft, and the intake passage sucks the intake air sucked from the suction port body. The vacuum cleaner according to claim 6, wherein at least a part of a path for guiding the dust collection chamber and a path for guiding intake air discharged from the dust collection chamber to the electric blower is formed. An operation gripping part rotatably attached to the main body part;
The vacuum cleaner according to any one of claims 1 to 7, further comprising a wheel that is disposed near an attachment portion of the operation grip portion to the main body portion and supports the main body portion. The vacuum cleaner according to any one of claims 1 to 7, further comprising wheels arranged at a front end portion and a rear end portion of the main body portion.

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