JP6418075B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner.

  Conventionally, an intake side filter is attached from the rear of the vacuum cleaner, and a finger is put into a holding recess to pull out the intake side filter (see, for example, Patent Document 1).

JP 2014-18300 A

  In a vacuum cleaner with a vertical handle whose longitudinal direction runs along the front-rear direction of the main body case, there is no space for mounting the intake side filter at the rear of the cleaner, and it is necessary to mount the intake side filter on the side surface of the main body case. However, if there is a dent in the part where the intake side filter is mounted as in the conventional case, there is a problem that the design is poor and it stands out.

  The present invention has been made to solve the above-described problems, and has an object of obtaining a vacuum cleaner that has a good design and is inconspicuous even when an intake side filter is attached to a side surface of a main body case.

  In the vacuum cleaner according to the present invention, the electric blower, the dust collecting chamber for collecting dust from the air sucked by the suction air generated by the operation of the electric blower, and the dust collecting chamber cannot be collected. An intake-side filter that collects fine dust before being sucked into the electric blower, and a main body case that covers the electric blower and the intake-side filter. The main body case is provided on a side surface and the side surface. A mounting hole for mounting the intake side filter; and a latch portion for fixing the intake side filter mounted in the mounting hole. The intake side filter includes a release button for releasing the latch portion. The latch portion is released by pushing the release button, and the main body case is mounted in a state where the intake side filter is attached to the attachment hole of the main body case and the release button is not pushed. Outer surface and an outer surface of the release button of the intake-side filter exposed from the scan is characterized in that the which is the side flush of the main body case.

  In the present invention, when the intake side filter is mounted in the mounting hole of the main body case and the release button is not pushed in, the outer surface of the intake side filter exposed from the main body case and the outer surface of the release button are the side surface of the main body case. It is the same. Thereby, since there is no dent in the portion where the intake side filter is mounted, the design is good, and even if the intake side filter is mounted on the side surface of the main body case, it is not noticeable.

It is a perspective view which shows the vacuum cleaner which concerns on embodiment of this invention. It is a side view which shows the main body of the vacuum cleaner which concerns on embodiment of this invention. It is sectional drawing which cut | disconnected the center of the main body of the vacuum cleaner which concerns on embodiment of this invention in the front-back direction. It is the figure which looked at the main part of the vacuum cleaner which concerns on embodiment of this invention from diagonally back. It is the figure which looked at the main part of the vacuum cleaner which concerns on embodiment of this invention from diagonally back. It is a top view which shows the main body of the vacuum cleaner which concerns on embodiment of this invention. It is a top view which shows the main body of the vacuum cleaner which concerns on embodiment of this invention. It is sectional drawing which cut | disconnected the main body of the vacuum cleaner which concerns on embodiment of this invention in the horizontal direction. It is sectional drawing which cut | disconnected the main body of the vacuum cleaner which concerns on embodiment of this invention in the horizontal direction. It is an expanded sectional view showing the suction side filter attached to the main part of the vacuum cleaner concerning an embodiment of the invention.

  FIG. 1 is a perspective view showing a vacuum cleaner according to an embodiment of the present invention. The vacuum cleaner 1 is a canister type. The vacuum cleaner 1 includes a suction head 2, an extension pipe 3, a connection pipe 4, a suction hose 5, and a main body 6.

  A suction port is formed in the suction head 2. The suction port is a downward opening. The suction head 2 includes a connecting pipe at the center. The connection pipe of the suction head 2 is detachably connected to one end of the extension pipe 3. The extension pipe 3 can be expanded and contracted, and its length can be adjusted steplessly or in multiple steps.

  One end of the connection pipe 4 is detachably connected to the other end of the extension pipe 3. The connection pipe 4 includes a cylindrical member and an operation handle 7 provided on the member. The operation handle 7 is a part held by a person who performs cleaning to move the suction head 2. An operation switch 8 is provided on the operation handle 7. For example, the operation switch 8 includes a plurality of buttons for controlling the operation of the vacuum cleaner 1.

  One end of the suction hose 5 is connected to the other end of the connection pipe 4. The other end 5 a of the suction hose 5 is detachably connected to the main body 6. A portion of the suction hose 5 other than the end portion 5a has a bellows shape and bends in an arbitrary direction. The end 5a of the suction hose 5 is formed in a cylindrical shape by a plurality of hard plastic members, for example. The suction head 2, the extension pipe 3, the connection pipe 4, and the suction hose 5 form an air passage for guiding air containing dust (dust-containing air) from the outside to the main body 6.

  FIG. 2 is a side view showing the main body of the electric vacuum cleaner according to the embodiment of the present invention. In the following description, the vertical direction is specified based on the state shown in FIG. Regarding the front-rear direction, the left side of FIG. The main body 6 has a function of separating garbage from the air containing the garbage and a function of collecting the separated garbage. The main body 6 includes a suction unit 9 and a dust collection unit 10. The dust collection unit 10 can be attached to and detached from the suction unit 9. The suction unit 9 includes a main body case 11, a hose connection portion 12, a handle 13, a wheel 14, a front wheel 15, and a power cord 16. A dust collection case 17 is disposed on the front side of the main body case 11. The dust collection case 17 has a cylindrical shape in which one end is closed, the central axis is disposed obliquely, and opens obliquely upward. The lower part of the dust collection case 17 projects forward from the upper part. The dust collection unit 10 is detachably accommodated in the dust collection case 17.

  The handle 13 has a rod-shaped gripping portion 13 a that the user has when lifting the main body 6. For example, the user lifts the main body 6 with the handle 13 when cleaning the stairs or the like. The handle 13 is provided on the upper part of the main body case 11 and protrudes from the upper surface of the main body case 11. Here, the gripping portion 13a is a straight bar, but may be slightly curved.

  The wheel 14 is rotatably provided on both sides of the rear portion of the main body case 11. The front wheel 15 is rotatably provided at a front portion of the main body case 11 and is disposed below the dust collection case 17. In a state in which the dust collection unit 10 is attached to the dust collection case 17, the front wheels 15 are disposed below the dust collection unit 10. The power cord 16 is wound around a cord reel provided inside the main body case 11.

  FIG. 3 is a cross-sectional view in which the center of the main body of the electric vacuum cleaner according to the embodiment of the present invention is cut in the front-rear direction. The suction unit 9 includes an electric blower 18, an electric blower case 19, an intake side filter 20 (HEPA filter), an exhaust side filter 21 (ULPA filter), a cord reel, and a control circuit (not shown) inside the main body case 11. The electric blower case 19 covers the electric blower 18. The main body case 11 covers the electric blower 18, the electric blower case 19, the intake side filter 20 and the exhaust side filter 21.

  When the power cord 16 is connected to the power source, the electric blower 18 performs a suction operation that is set in advance according to the operation on the operation switch 8. When the electric blower 18 performs a suction operation, the electric blower 18 generates an air flow in the air passage formed in the electric vacuum cleaner 1. The air passage formed in the vacuum cleaner 1 includes an air passage for guiding air including dust from the outside to the main body 6, an air passage formed in the dust collection unit 10, and an exhaust air passage 22. When the air flow is generated, the dust on the floor surface is sucked together with the air from the suction port of the suction head 2. The air including the dust sucked into the suction head 2 flows into the main body 6 through the extension pipe 3, the connection pipe 4 and the suction hose 5.

  The air containing the dust flowing into the main body 6 is sent to the dust collecting unit 10 through the hose connection portion 12. When the end 5 a reaches the dust collection unit 10 when the suction hose 5 is inserted into the hose connection portion 12, the air containing dust is directly sent from the suction hose 5 to the dust collection unit 10. The dust collection unit 10 separates dust from air containing dust. The dust collection unit 10 separates the dust by centrifugal force by swirling the air containing the dust at a high speed. That is, the dust collection unit 10 has a cyclone separation function. The dust collection unit 10 collects the separated garbage and temporarily stores it. Clean air flows from the dust collection unit 10 into the exhaust air passage 22.

  The main part of the exhaust air passage 22 is formed in the main body case 11. The exhaust air passage 22 is an air passage for guiding the air from which dust is removed by the dust collection unit 10 to the exhaust portion 23. The electric blower 18, the intake side filter 20 and the exhaust side filter 21 are disposed in the exhaust air passage 22.

  The end portion 5 a of the suction hose 5 is connected to the hose connection portion 12. The hose connection portion 12 is provided at a front upper portion of the main body case 11, is disposed above a half height of the main body case 11, and protrudes forward from the peripheral wall of the dust collection case 17.

  The dust collection unit 10 has a cylindrical shape as a whole. The dust collection unit 10 is inserted into the dust collection case 17 from above. The dust collection unit 10 can be removed from the dust collection case 17 by pulling the dust collection unit 10 upward while performing a predetermined operation.

  In a state where the dust collection unit 10 is attached to the dust collection case 17, the central axis of the dust collection unit 10 is disposed obliquely in the same manner as the central axis of the dust collection case 17. That is, the lower part of the dust collection unit 10 projects forward from the upper part. The dust collection unit 10 includes, for example, a plurality of molded products. By appropriately arranging the plurality of molded products, the swirl chamber 24, the inflow air passage 25, the zero-order dust collection chamber 26, the primary dust collection chamber 27, and the outflow air passage 28 are formed in the dust collection unit 10.

  The swirl chamber 24 swirls air containing dust sucked in by suction air generated by the operation of the electric blower 18. The upper part of the swirl chamber 24 is cylindrical. The lower part of the swirl chamber 24 has a truncated cone shape whose diameter decreases as it goes downward. The side wall forming the swirl chamber 24 has a circular cross section in a direction perpendicular to the central axis of the swirl chamber 24. The central axis of the swirl chamber 24 is substantially parallel to the central axis of the dust collection case 17 but is slightly shifted.

  An inflow port 29 is formed in the upper part of the side wall forming the swirl chamber 24. The inflow air passage 25 communicates with the swirl chamber 24 through the inflow port 29. The inflow air passage 25 is an air passage for guiding the air including the dust that has passed through the suction hose 5 and the like to the swirl chamber 24. The inflow air passage 25 opens at the peripheral wall of the dust collection unit 10. This opening is the unit inlet 30 of the dust collection unit 10. The unit inlet 30 is an opening for taking in air containing dust into the dust collection unit 10. The air including dust that has passed through the suction hose 5 and the like flows into the inflow air passage 25 from the unit inlet 30. The air containing the dust flowing into the inflow air passage 25 passes through the inflow air passage 25 and flows into the swirl chamber 24 from the inflow port 29. When the dust collection unit 10 is attached to the dust collection case 17, the unit inlet 30 faces the hose connection portion 12.

  A zero-order opening 31 is formed in the side wall forming the swirl chamber 24. The zero-order opening 31 is formed downstream from the inflow port 29. The zero-order dust collection chamber 26 communicates with the swirl chamber 24 through the zero-order opening 31. The zero-order dust collection chamber 26 has a cylindrical shape as a whole. The zero-order dust collection chamber 26 is formed so as to surround the periphery of the swirl chamber 24.

  A primary opening 32 is formed by the lower end of the side wall forming the swirl chamber 24. The primary opening 32 is formed downstream of the zero-order opening 31. The primary dust collection chamber 27 communicates with the swirl chamber 24 through the primary opening 32. The primary dust collection chamber 27 is formed so as to surround the lower end portion of the swirl chamber 24. The primary dust collection chamber 27 is surrounded by a zero-order dust collection chamber 26.

  An outflow port 33 is formed in the outflow pipe protruding into the swirl chamber 24 by a large number of fine holes. The swirl chamber 24 communicates with the outflow air passage 28 via the outlet 33. The outflow air passage 28 is an air passage for letting the air in the swirl chamber 24 out of the dust collection unit 10. The outflow air passage 28 opens at the peripheral wall of the dust collection unit 10. This opening is the unit outlet 34 of the dust collection unit 10. The unit outlet 34 is an opening through which air flows out from the dust collection unit 10. The air in the swirl chamber 24 flows into the outflow air passage 28 from the outlet 33. The air flowing into the outflow air passage 28 passes through the outflow air passage 28 and out of the dust collection unit 10 from the unit outlet 34. When the dust collection unit 10 is attached to the dust collection case 17, the unit outlet 34 is connected to the exhaust air passage 22.

  Next, the operation of the electric vacuum cleaner during normal cleaning will be described. When the power cord 16 is connected to an external power source, devices such as the electric blower 18 are energized. When the electric blower 18 starts the suction operation, as described above, the air containing the dust sucked into the suction head 2 passes through the unit inlet 30 and flows into the inflow air passage 25. The air containing the dust flowing into the inflow air passage 25 passes through the inflow air passage 25 and flows into the swirl chamber 24 from the inflow port 29. At this time, the air containing dust flows into the swirl chamber 24 from the tangential direction of the side wall forming the swirl chamber 24. Since the central axis of the swirl chamber 24 is deviated from the central axis of the dust collection unit 10, it is not necessary to bend the inflow air passage 25 greatly, and the generation of noise can be suppressed.

  The air that flows into the swirl chamber 24 from the inflow port 29 turns in a direction set in advance in the swirl chamber 24. Thereby, a swirl airflow is formed in the swirl chamber 24. The whirling airflow flows downward due to the path structure and gravity while forming a forced vortex region near the central axis and a free vortex region outside the central vortex region.

  Centrifugal force acts on the dust contained in the swirling airflow. For example, relatively bulky waste α such as fiber waste and hair falls while being pressed against the side wall forming the swirl chamber 24 by the acting centrifugal force. Therefore, the dust α passes through the zeroth-order opening 31 when reaching the height of the zeroth-order opening 31. Garbage α that has passed through the zero-order opening 31 is sent to the zero-order dust collection chamber 26. As a result, the garbage α falls into the zero-order dust collection chamber 26 and is collected.

  Garbage that has not entered the zero-order dust collection chamber 26 from the zero-order opening 31 moves further downward while turning. Relatively small waste β such as sand dust and fine fiber waste passes through the primary opening 32. Thereby, the garbage β falls into the primary dust collecting chamber 27 and is collected.

  When the swirl airflow reaches the lowermost part of the swirl chamber 24, the traveling direction of the swirl airflow is changed upward. As a result, an updraft is formed along the central axis of the swirl chamber 24. Garbage α and dust β are removed from the air forming the updraft. The clean air from which the waste α and the waste β have been removed passes through the outlet 33 and flows out of the swirl chamber 24. The air that has passed through the outlet 33 passes through the outlet air passage 28 and reaches the unit outlet 34. Then, the clean air passes through the unit outlet 34 and is sent to the exhaust air passage 22.

  The clean air flowing into the exhaust air passage 22 passes through the intake side filter 20, the electric blower 18, and the exhaust side filter 21. As described above, the dust collected from the air in the swirl chamber 24 is collected by the zero-order dust collection chamber 26 and the primary dust collection chamber 27, but the fine dust that cannot be collected by the dust collection chamber 26 is collected in the electric blower 18. The intake filter 20 collects before being sucked. The exhaust-side filter 21 cleans the air that has passed through the intake-side filter 20 and is discharged from the electric blower 18. The exhaust unit 23 exhausts the air that has passed through the exhaust side filter 21 and has passed through the exhaust air passage 22 formed between the electric blower case 19 and the main body case 11 to the outside of the main body 6. For example, the air discharged from the exhaust unit 23 is returned to the room being cleaned.

  Next, the mounting structure of the intake filter 20 that is a characteristic part of the present embodiment will be described in detail. 4 and 5 are views of the main body of the electric vacuum cleaner according to the embodiment of the present invention as seen obliquely from behind. 6 and 7 are top views showing the main body of the vacuum cleaner according to the embodiment of the present invention. FIG.8 and FIG.9 is sectional drawing which cut | disconnected the main body of the vacuum cleaner which concerns on embodiment of this invention in the horizontal direction.

  A hose connection portion 12 is provided on the front surface of the main body case 11, an exhaust portion 23 is provided on the rear surface, and an intake side filter 20 is attached to a side surface 35 at a position orthogonal to the front-rear direction of the main body case 11. A mounting hole 36 is provided. On the bottom surface near the entrance of the mounting hole 36, a latch portion 37 for fixing the intake side filter 20 mounted in the mounting hole 36 is provided. The intake-side filter 20 includes a filter 38, a frame 39 that supports the filter 38, and a release button 40 that releases the latch portion 37. The latch portion 37 is released by pushing the release button 40. A button hole 41 that opens upward is provided near the outer end of the frame 39. The release button 40 is supported in a button hole 41 by a spring 42 so as to be movable up and down. 4, 6, and 8 show a state in which the intake side filter 20 is attached to the attachment hole 36 of the main body case 11, and FIGS. 5, 7, and 9 show a state in which the intake side filter 20 is pulled out.

  FIG. 10 is an enlarged cross-sectional view showing the intake-side filter attached to the main body of the vacuum cleaner according to the embodiment of the present invention. In a state where the release button 40 is not pushed in, the latch portion 37 protrudes and is caught by the frame 39 of the intake side filter 20, so that the intake side filter 20 cannot be pulled out from the mounting hole 36. On the other hand, the latch portion 37 is lowered by pushing the release button 40 downward, so that the intake side filter 20 can be pulled out from the mounting hole 36. When the release button 40 is released from the pressed state, the release button 40 is pushed back by the spring 42.

  A seal packing 43 is provided on the frame 39 of the intake side filter 20, and a seal packing 44 is provided in the mounting hole 36 of the main body case 11. In the state where the intake side filter 20 is mounted in the mounting hole 36 of the main body case 11, the inside of the main body case 11 is hermetically sealed by the seal packings 43 and 44.

  In the present embodiment, when the intake side filter 20 is mounted in the mounting hole 36 of the main body case 11 and the release button 40 is not pushed in, the outer surface of the frame 39 of the intake side filter 20 exposed from the main body case 11 and the release The outer surface of the button 40 is flush with the side surface 35 of the main body case 11. That is, the heights of these surfaces are the same, and there is no step between these surfaces, and the surfaces are flat. Thereby, since there is no big dent which a finger | toe enters in the part which attached the intake side filter 20, a design is good and even if the intake side filter 20 is attached to the side surface of the main body case 11, it is not conspicuous.

  The frame 39 of the intake side filter 20 has a handle 45 for pulling out the intake side filter 20 from the mounting hole 36 in a state where the release button 40 is pushed. The handle 45 is a corner portion located between the outer surface of the frame 39 and the inner side surface of the button hole 41. As a result, it is possible to pull out the intake-side filter 20 by pushing the release button 40 and releasing the latch portion 37 while placing a finger on the handle 45. Further, since the handle 45 is not conspicuous when the release button 40 is not pushed in, the design is good.

  The handle 45 is chamfered. For this reason, when putting the finger on the handle 45 and pulling out the intake side filter 20, the pain caused by the handle 45 biting into the finger can be alleviated.

  The handle 13 provided on the upper part of the main body case 11 is a vertical handle whose longitudinal direction is along the front-rear direction of the main body case 11. In such a vacuum cleaner with a vertical handle, there is no space for mounting the intake side filter 20 on the rear surface of the vacuum cleaner, and it is necessary to mount the intake side filter 20 on the side surface 35 of the main body case 11. The configuration is particularly effective.

  Further, the intake side filter 20 is pulled out from the mounting hole 36 in the vertical direction of the longitudinal direction of the handle 13. Thereby, the intake side filter 20 can be pulled out while holding the handle 13.

  Moreover, since the side surface 35 of the main body case 11 is an inclined surface for downsizing the vacuum cleaner, the outer surface of the release button 40 is also an inclined surface. Therefore, a rib 46 extending in the lateral direction is provided on the outer surface of the release button 40 so that the finger does not slip when the release button 40 is pushed.

  For example, if the release button 40 is behind the rotation axis of the wheel 14, when the release button 40 is pressed, the vacuum cleaner 1 is turned over with the wheel 14 as a fulcrum. Therefore, in a state where the intake side filter 20 is mounted in the mounting hole 36 of the main body case 11, the release button 40 is disposed immediately above the rotating shaft of the wheel 14. Thereby, when the release button 40 is pushed, the vacuum cleaner 1 does not turn over.

  In addition, in this Embodiment, the vacuum cleaner 1 demonstrated the example provided with the dust collection part of a cyclone separation system. However, the present invention is not limited to this, and the vacuum cleaner 1 may include a paper pack type dust collecting unit.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner, 11 Main body case, 13 Handle, 14 Wheel, 15 Front wheel, 18 Electric blower, 20 Intake side filter, 21 Exhaust side filter, 26 Primary dust collection chamber (dust collection chamber), 27 Primary dust collection chamber (Dust collection chamber), 35 Side, 36 Mounting hole, 37 Latch part, 40 Release button, 45 Handle, 46 Rib

Claims (7)

An electric blower,
A dust collection chamber that collects dust from the air sucked by the suction air generated by the operation of the electric blower;
An intake-side filter that collects fine dust that could not be collected by the dust collection chamber before being sucked into the electric blower;
A main body case covering the electric blower and the intake filter,
The main body case includes a side surface, a mounting hole provided on the side surface to which the intake side filter is mounted, and a latch portion for fixing the intake side filter mounted in the mounting hole.
The intake side filter has a release button for releasing the latch portion,
The latch part is released by pushing the release button,
The outer surface of the intake side filter and the outer surface of the release button exposed from the main body case in a state where the intake side filter is mounted in the mounting hole of the main body case and the release button is not pushed in A vacuum cleaner characterized by being flush with the side surface of the case.   The vacuum cleaner according to claim 1, wherein the intake side filter has a handle for pulling out the intake side filter from the mounting hole in a state where the release button is pushed.   The vacuum cleaner according to claim 2, wherein the handle is chamfered.   The vacuum cleaner according to any one of claims 1 to 3, further comprising a handle provided at an upper portion of the main body case and having a longitudinal direction along a front-rear direction of the main body case.   The vacuum cleaner according to claim 4, wherein the intake side filter is pulled out from the mounting hole in a direction perpendicular to the longitudinal direction of the handle. The side surface of the main body case is an inclined surface,
The vacuum cleaner according to any one of claims 1 to 5, wherein a rib is provided on the outer surface of the release button. Wheels rotatably provided on both sides of the rear part of the main body case;
A front wheel provided rotatably on a front portion of the main body case;
7. The release button is disposed immediately above the rotation shaft of the wheel in a state where the intake side filter is mounted in the mounting hole of the main body case. Electric vacuum cleaner.

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