JP2013043012A - Suction port body and vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction port body and a vacuum cleaner capable of restraining an inclination of the wheel shaft between a plurality of wheels that support the suction port body so that it can travel and further capable of stabilizing traveling performance and rotation performance.SOLUTION: The suction port body 26 includes a suction port body 32 containing a passage 36 connected to a suction port 28 opening to the front half part of a bottom 35, a connecting tube 33 located in the middle of the rear part of the suction port body 32 so as to be rotatable around the shaft along the forward and backward direction of the suction port body 32, an electric motor 31 located on one of the right and left sides of the connecting tube 33 or the passage 36 and stored inside the suction port body 32 to generate the driving force of a rotary cleaning body 29, a high voltage power supply portion 55 located on the other of the right and left sides of the connecting tube 33 or the passage 36 and stored inside the suction port body 32, and an ion generating portion 56 electrically connected to the high voltage power supply portion 55 and emits negative ion into the atmosphere of the suction port body 32.

Description

  Embodiments according to the present invention relate to a suction port body and a vacuum cleaner.

  2. Description of the Related Art A suction port body is known that includes a rod-shaped rotary brush having a large number of bristles extending in the radial direction, and a generator having a different material resistance and electrical strength from the rotary brush. The suction port body efficiently collects dust on the surface to be cleaned by generating ions by friction between the rotating brush and the generator, and adsorbing the ions to dust charged to a reverse potential.

  Moreover, the vacuum cleaner provided with the apparatus which generate | occur | produces a negative ion mist is known.

  On the other hand, the vacuum cleaner includes a hand operating tube and an extension tube that are part of a flow path connecting the electric blower and the suction port body. The hand control tube includes a grip portion having a shape that is easy to grip so that the user of the vacuum cleaner can easily perform the traveling operation of the suction port body. On the other hand, the extension pipe is a straight pipe provided with one end connected to the suction port body and the other end connected to the hand operating pipe. The extension pipe relays between the suction port located on the surface to be cleaned and the gripping part gripped by the user of the vacuum cleaner.

  The suction port body includes a universal joint that is mechanically and fluidly connected to the extension pipe. This universal joint is a part of the flow path, and mechanically adjusts the relative angular change between the extension pipe and the suction port that changes every time the suction port moves. The universal joint has, for example, an axis that rotates around an axis along the front-rear direction of the suction port body, and an axis that supports the inclination of the extension pipe with respect to this axis.

  By the way, when the user of the vacuum cleaner changes the room to be cleaned or avoids an obstacle such as a sill on the surface to be cleaned, the suction port body is temporarily lifted from the surface to be cleaned and re-appears on the surface to be cleaned. May be placed. At this time, if the center of gravity of the suction port body is far away from the rotation axis of the universal joint (particularly, the shaft rotating around the axis along the front-rear direction of the suction port body), the posture of the suction port body is greatly inclined. End up. When the user of the vacuum cleaner rearranges the suction port body whose posture is greatly inclined on the surface to be cleaned, the user feels annoyance such as bending down to correct the posture of the suction port body. In addition, if the surface of the suction port body is tilted and left in contact with the surface to be cleaned, depending on its weight, in the case of a floor surface such as flooring, the wax on the flooring surface is removed and the appearance is damaged. There is a risk of scratching.

  Therefore, the conventional suction port body is provided with a structure that suppresses the inclination of the suction port body by arranging a universal joint at a position biased to the left or right from the rear center of the suction port body, or the front-rear direction of the suction port body Or a structure that suppresses the inclination of the suction port body by applying a load around the axis along the axis.

JP 2003-304990 A JP 2010-213885 A Japanese Patent Laid-Open No. 02-297324 JP 02-36830 A

  The suction port may be equipped with a generally heavy device such as an electric motor that generates the driving force of the rotating brush or a negative ion generator having a high-voltage power supply, and also in this case, the gravity center position of the suction port, It is necessary to suppress the inclination of the posture derived from the positional relationship with the rotation axis of the universal joint (in particular, the axis rotating around the axis along the front-rear direction of the suction port body).

  On the other hand, if the position of the universal joint is deviated from the center of the suction port body to the left or right like the conventional suction port body, or if a load is applied to the rotation of the universal joint, the suction port body is operated. There is also a possibility that the user may feel annoyed.

  Therefore, the present invention proposes a suction port body and a vacuum cleaner that are equipped with an electric rotary brush and a negative ion generator and that can maintain a posture that can be easily rearranged on the surface to be cleaned.

  In order to solve the above-mentioned problem, a suction port body according to an embodiment of the present invention includes a suction port body having a suction port that opens in a front half portion of a bottom surface and containing a flow path connected to the suction port, and the suction port body A connecting pipe that is located in the center of the rear and is rotatable around an axis along the front-rear direction of the suction port body, a rotatable cleaning body that is positioned at the suction port and is rotatable, and the left and right sides of the connecting pipe or the flow path An electric motor that is located in one of the sides and fits in the suction port main body to generate the driving force of the rotary cleaning body, and the suction pipe that is located on either the left or right side of the connection pipe or the flow path A high voltage power supply unit that is housed in the mouth main body, and an ion generation unit that is electrically connected to the high voltage power supply unit and emits negative ions to the atmosphere of the suction port main body.

  In addition, a vacuum cleaner according to an embodiment of the present invention includes the suction port body, an electric blower that is fluidly connected to the suction port body, and a cleaner body that houses the electric blower. To do.

The perspective view which shows the external appearance of the vacuum cleaner which concerns on embodiment of this invention. The perspective view of the top | upper surface side which shows the suction inlet concerning the embodiment of this invention. The perspective view of the bottom face side which shows the suction inlet concerning the embodiment of the present invention. The circuit diagram which shows the suction inlet which concerns on embodiment of this invention. The longitudinal cross-sectional view which shows the suction inlet concerning the embodiment of this invention. The top view which removes and shows an upper case from the suction inlet which concerns on embodiment of this invention.

  Embodiments of a suction port body and a vacuum cleaner according to the present invention will be described with reference to FIGS. 1 to 6.

  FIG. 1 is a perspective view showing an external appearance of a vacuum cleaner according to an embodiment of the present invention.

  As shown in FIG. 1, the vacuum cleaner 1 according to the present embodiment is a so-called canister-type vacuum cleaner. The vacuum cleaner 1 includes a cleaner body 2 that can travel on the surface to be cleaned, and a pipe portion 3 that is detachably connected to the cleaner body 2.

  The vacuum cleaner main body 2 includes a main body case 5, a pair of wheels 6 positioned on both sides of the main body case 5, a detachable dust separating and collecting portion 7 positioned in the front half of the main body case 5, and the main body case 5. The electric blower 8 located in the latter half of the main body, a main body control unit 9 that mainly controls the operation of the electric blower 8, and a power cord 11 that guides electric power to the electric blower 8.

  The main body case 5 has a main body connection port 12 as a joint to which the pipe portion 3 can be attached and detached. The main body connection port 12 is a fluid inlet of the vacuum cleaner main body 2 and fluidly connects the pipe portion 3 and the dust separation and dust collection portion 7.

  The dust separating and collecting part 7 is from air containing dust (hereinafter referred to as “dust-containing air”) that flows from the surface to be cleaned through the tube part 3 and the main body connection port 12 by the negative pressure generated by the electric blower 8. Dust is separated, collected, accumulated, and air is sent to the electric blower 8.

  The electric blower 8 sucks air passing through the dust separation and collection unit 7 and generates negative pressure.

  The main body control unit 9 includes a microprocessor (not shown) and a storage device (not shown) that stores various calculation programs and parameters executed by the microprocessor. The main body control unit 9 stores a plurality of preset operation modes in the storage device. The plurality of operation modes set in advance correspond to operation signals received from the pipe section 3 and have different input values (input values of the electric blower 8) as differences between the operation modes. When receiving the operation signal from the pipe unit 3, the main body control unit 9 selectively selects an arbitrary operation mode corresponding to the operation signal from a plurality of preset operation modes and reads it from the storage unit. The operation control of the electric blower 8 is performed according to the above.

  The power cord 11 includes a power plug 14 at the free end.

  The pipe part 3 sucks dust-containing air from the surface to be cleaned and guides it to the cleaner body 2 by the negative pressure acting from the cleaner body 2 as the electric blower 8 is operated. The pipe portion 3 includes a connection pipe 19 as a joint that is detachably connected to the cleaner body 2, a dust collection hose 21 that is fluidly connected to the connection pipe 19, and a manual operation that is fluidly connected to the dust collection hose 21. A tube 22, a gripping part 23 protruding from the hand control tube 22, an operation part 24 located on the gripping part 23, an extension tube 25 detachably connected to the hand control tube 22, and a connection detachably connected to the extension tube 25 A suction port body 26.

  The connection pipe 19 is a joint that can be attached to and detached from the main body connection port 12, and is fluidly connected to the dust separating and collecting part 7 through the main body connection port 12.

  The dust collection hose 21 is a long and flexible substantially cylindrical hose. One end of the dust collection hose 21 (here, the rear end) is connected to the connecting pipe 19. The dust collecting hose 21 is fluidly connected to the dust separating and collecting part 7 through the connecting pipe 19.

  The hand operation tube 22 is interposed between the dust collection hose 21 and the extension tube 25. One end portion (here, the rear end portion) of the hand operation tube 22 is connected to the other end portion (here, the front end portion) of the dust collecting hose 21. The hand operating tube 22 is fluidly connected to the dust separating and collecting unit 7 through the dust collecting hose 21 and the connecting tube 19.

  The grip portion 23 is a portion that the user grips with his / her hand to operate the vacuum cleaner 1. The grip portion 23 has an appropriate shape that can be easily gripped by a user with a hand and protrudes from the hand operation tube 22.

  The operation unit 24 includes a switch corresponding to each operation mode. Specifically, the operation unit 24 includes a stop switch 24 a corresponding to the operation stop operation of the electric blower 8 and an activation switch 24 b corresponding to the operation start operation of the electric blower 8. The stop switch 24 a and the start switch 24 b are electrically connected to the main body control unit 9. The user of the vacuum cleaner 1 can alternatively select the operation mode of the electric blower 8 by operating the operation unit 24. After the electric blower 8 starts operation, the start switch 24b also functions as an operation mode selection switch. In this case, every time the operation signal is received from the start switch 24b, the main body control unit 9 switches the operation mode as strong → medium → weak → strong →. The operation unit 24 may separately include a weak operation switch (not shown), a medium operation switch (not shown), and a strong operation switch (not shown) instead of the start switch 24b.

  The extension tube 25 is an elongated substantially cylindrical tube that can be expanded and contracted. The extension tube 25 has a telescopic structure in which a plurality of cylindrical bodies are overlapped. One end portion (here, the rear end portion) of the extension tube 25 is detachably connected to the other end portion (here, the front end portion) of the hand operation tube 22. The extension pipe 25 is fluidly connected to the dust separating and collecting part 7 via the hand operation pipe 22, the dust collecting hose 21 and the connecting pipe 19.

  The suction port body 26 is detachably connected to the other end portion (here, the front end portion) of the extension pipe 25. The suction port body 26 has a structure capable of running or sliding on a surface to be cleaned such as a wooden floor or a carpet, and has a suction port 28 on the bottom surface facing the surface to be cleaned in the running state or the sliding state. Further, the suction port body 26 is rotated at the suction port 28, and can rotate and rotate. The negative ion generator 30 that generates negative ions in the atmosphere of the suction port body 26. The rotary cleaning body 29 is driven to rotate. A possible electric motor 31. The suction port body 26 is fluidly connected to the dust separating and collecting part 7 through the extension pipe 25, the hand operating pipe 22, the dust collecting hose 21 and the connecting pipe 19.

  When the vacuum cleaner 1 receives the operation of the start switch 24b, the electric vacuum blower 8 starts to operate and generates a negative pressure (suction negative pressure) inside the cleaner body 2. For example, when the electric blower 8 is operated with the start switch 24b in a state where the electric blower 8 is stopped, the electric blower 8 is first operated in the strong operation mode, and then when the operation of the start switch 24b is received, the electric blower 8 is turned on. When the operation is performed in the operation mode and the operation of the start switch 24b is further received, the electric blower 8 is operated in the weak operation mode, and the following is repeated. The strong operation mode, the intermediate operation mode, and the weak operation mode are a plurality of operation modes that are set in advance, and the input values are smaller in the order of the strong operation mode, the intermediate operation mode, and the weak operation mode.

  The negative pressure generated inside the vacuum cleaner main body 2 is sucked into the suction port body 26 through the dust separating and collecting part 7, the main body connection port 12, the connection tube 19, the dust collection hose 21, the hand operation tube 22 and the extension tube 25. Acts on the mouth 28. Due to the negative pressure acting on the suction port 28, the vacuum cleaner 1 sucks dust collected on the surface to be cleaned together with air from the suction port 28 to clean the surface to be cleaned. The dust separating and collecting unit 7 separates, collects, and accumulates dust from the dust-containing air sucked by the suction port 28. The air that has been separated and cleaned from the dust-containing air passes through the dust separation and collection unit 7 and the electric blower 8 and is exhausted outside the cleaner body 2.

  The suction port body 26 will be further described in detail.

  FIG. 2 is a perspective view of the top surface side showing the suction port body according to the embodiment of the present invention.

  FIG. 3 is a bottom perspective view showing the suction port body according to the embodiment of the present invention.

  As shown in FIGS. 2 and 3, the suction port body 26 according to the present embodiment includes a box-shaped suction port body 32 having a flat, substantially rectangular parallelepiped shape that is short in the front-rear direction, which is the traveling direction, and wide in the left-right direction. And a connecting pipe portion 33 located at the center of the rear portion of the mouth main body 32.

  Here, let the advancing direction (solid arrow X in FIG. 2) of the suction inlet 26 be a front, and let the opposite direction be a back. Further, with the suction port body 26 placed on a substantially horizontal surface to be cleaned such as a floor surface, the left side (solid arrow Y in FIG. 2) when viewed from the rear is on the left, and the opposite direction is on the right And Furthermore, the + Z direction of the right-handed coordinate system orthogonal to the front-rear direction and the left-right direction of the suction port body 26 is defined as the upper side, and the opposite direction is defined as the lower side.

  The suction port body 32 has a suction port 28 located in the front half of the bottom surface 35, and includes a flow path 36 connected to the suction port 28. The suction inlet body 32 includes a box-shaped lower case 37 that opens upward, and an upper case 38 that covers the lower case 37 from above.

  The lower case 37 is the lower half of the suction port body 26 or the suction port body 32. The lower case 37 has a suction port 28 that opens widely in the front half of the bottom surface 35.

  Further, the lower case 37 includes a rear bulging portion 39 that protrudes rearward from the central portion of the rear portion and covers and protects the lower portion of the connecting pipe portion 33.

  Further, the lower case 37 includes a plurality of, for example, four wheels 41 on the bottom surface 35. When the suction port body 26 is placed on the surface to be cleaned with the bottom surface 35 facing the surface to be cleaned, the wheel 41 has a space between the bottom surface 35 and the surface to be cleaned and a suction port body 26 or a suction port body 32. It supports to the state that can run. The four wheels 41 include axles that face in the left-right direction (width direction) of the suction port body 26 and are parallel to each other in order to make the suction port body 26 move forward and backward smoothly. Further, the wheel widths of the wheels 41 arranged in the front-rear direction overlap with each other when viewed in the front-rear direction.

  The upper case 38 has an ion discharge port 42 that discharges negative ions generated by the negative ion generator 30 from the suction port body 26 to the atmosphere of the suction port body 26. The ion discharge port 42 is located at a portion inclined forward in the ceiling portion of the suction port body 26 and faces the front of the suction port body 26.

  Further, the suction port body 26 is located between the front and rear wheels 41 and has a raised cloth 45 having raised hairs 43 that can be grounded to the surface to be cleaned together with the wheels 41, and a floor surface that can be grounded to the surface to be cleaned together with the wheels 41. And a detection switch 46.

  The raised cloth 45 extends substantially in parallel with the axle of the wheel 41.

  The floor detection switch 46 is a caster that is located on the bottom surface 35 of the lower case 37 and that allows the wheels 47 to appear and retract in the normal direction of the bottom surface 35. When the floor surface detection switch 46 comes into contact with the surface to be cleaned, the floor surface detection switch 46 is pushed above the suction port body 26 and detects that the suction port body 26 is in a state where it can run on the surface to be cleaned.

  The connection pipe part 33 is a universal joint that mechanically and fluidly connects the suction port body 26 to the extension pipe 25, and includes a rotary connection pipe part 48 and a swinging connection pipe part 49.

  The rotary connection pipe portion 48 is connected to the suction port body 32 and is rotatable about an axis (an axis that coincides with the X axis or an axis parallel to the X axis) along the front-rear direction of the suction port body 26.

  The swing connection pipe portion 49 can swing around an axis orthogonal to the rotation axis of the rotary connection pipe portion 48. The free end of the swing connection pipe portion 49 is a joint that can be attached to and detached from the extension pipe 25.

  The rotary cleaning body 29 is a rod-shaped cleaning body extending in the left-right direction of the suction port body 32. The rotary cleaning body 29 is a rotatable brush (so-called “so-called”) having a shaft (not shown) serving as a rotation center and a plurality of bristles 51 that extend in the radial direction of the shaft and are arranged spirally and in a plurality of lines in the direction of the rotation center line. Rotating brush). The rotary cleaning body 29 includes a plurality of static elimination brushes 52 in a spiral strip formed by the plurality of hairs 51. The neutralizing brush 52 is sparse in the hair 51. The static elimination brush 52 is an amorphous fiber, and is a discharge electrode that contacts the surface to be cleaned and discharges the electric charge on the surface to be cleaned.

  In addition, instead of or in addition to the bristles 51, the rotary cleaning body 29 may be provided with a blade such as flexible silicon rubber that extends in the radial direction of the shaft and spirals in the direction of the rotation center line. .

  FIG. 4 is a circuit diagram showing the suction port body according to the embodiment of the present invention.

  As shown in FIG. 4, the suction port body 26 according to the present embodiment receives electric power from the commercial AC power source E through the cleaner body 2 and the extension pipe 25 and operates the electric motor 31 and the negative ion generator 30. .

  Specifically, the suction port body 26 includes a switch 53 that opens and closes an electrical connection between a circuit (not shown) on the cleaner body 2 side and the electric motor 31. The switch 53 opens and closes in conjunction with the floor detection switch 46. Specifically, when the suction port body 26 is allowed to run on the surface to be cleaned, the switch 53 closes in conjunction with the detection of the floor surface detection switch 46 and supplies power to the electric motor 31. On the other hand, when the suction port body 26 is separated from the surface to be cleaned, the switch 53 opens in conjunction with the detection of the floor surface detection switch 46 and shuts off the power supply to the electric motor 31.

  The negative ion generator 30 operates in conjunction with the electric motor 31 as the switch 53 opens and closes. Specifically, when the switch 53 is closed and the electric motor 31 operates, the negative ion generator 30 also operates. On the other hand, when the switch 53 is opened and the electric motor 31 is stopped, the negative ion generator 30 is also stopped.

  The negative ion generator 30 is electrically connected to a circuit (not shown) on the cleaner body 2 side via a switch 53. The negative ion generator 30 includes a high voltage power supply unit 55 and an ion generation unit 56 that is electrically connected to the high voltage power supply unit 55. The high voltage power supply unit 55 applies a negative voltage to the ion generation unit 56 that is an electrode via the half-wave rectification circuit 57 and the DC-DC converter 58. The ion generator 56 is an electrode that generates negative ions.

  In addition, the suction port body 26 includes a relay substrate 61 on which a switch 53, a PTC thermistor 59 as a current limiting element, a relay connector 60a that connects the electric motor 31, and a relay connector 60b that connects the negative ion generator 30 are mounted.

  FIG. 5 is a longitudinal sectional view showing a suction port body according to the embodiment of the present invention.

  As shown in FIG. 5, the suction port body 26 according to the present embodiment supports the cleaning body chamber 62 that houses the rotary cleaning body 29, the connection pipe portion 33, and the fluid between the cleaning body chamber 62 and the connection pipe portion 33. And a relay pipe 63 to be connected to each other.

  The cleaning body chamber 62 is a part of a flow path having the suction port 28 as an inlet. The cleaning body chamber 62 holds the rotary cleaning body 29 in a rotatable state. A part of the rotary cleaning body 29, specifically the tips of the bristles 51 and the static elimination brush 52 protrude downward from the suction port 28, and when the suction port body 26 is placed on the surface to be cleaned, the surface is cleaned. Touch.

  The relay pipe 63 is in the suction inlet body 32 and has a flow path 36 extending in the front-rear direction. The relay pipe 63 rotatably supports the connection pipe part 33 and fluidly connects the cleaning body chamber 62 and the connection pipe part 33. Specifically, the front end of the relay pipe 63 is fluidly connected to the cleaning body chamber 62, and the rear end of the relay pipe 63 is fluidly connected to the connection pipe portion 33 and supports the connection pipe portion 33 rotatably. . The relay pipe 63 includes a flange 64 that rotatably supports the connection pipe portion 33, particularly the rotary connection pipe portion 48. The flange 64 extends in a bowl shape from the opening end of the relay pipe 63 in the radially outward direction. The rotary connecting pipe portion 48 covers the flange 64 and slides or slides in the circumferential direction and is integrated with the relay pipe 63.

  Further, the relay pipe 63 is sandwiched between the lower case 37 and the upper case 38 and is firmly fixed to integrate the inlet body 32 and the connecting pipe portion 33.

  The lower case 37 is provided above the cleaning body chamber 62 and includes an ion generation unit support bridge 65 that extends in the front-rear direction.

  On the other hand, the upper case 38 includes an ion generation part accommodation wall 67 that covers the upper part of the ion generation part support bridge 65 and partitions the ion generation part accommodation chamber 66. The ion generating portion accommodating wall 67 has a box shape that opens downward, and has an ion discharge port 42 that faces the front of the suction port body 26.

  The ion generator 56 is housed in the ion generator housing chamber 66. When the negative ion generator 30 operates, negative ions are generated from the ion generator 56 and diffused to the atmosphere of the suction port body 26 through the ion discharge port 42. The negative ions diffused into the atmosphere of the suction port body 26 are positively charged and float around the suction port body 26 while being sucked into the suction port 28 by the negative pressure acting on the suction port 28, or the surface to be cleaned The electric charge is lost by electrically neutralizing the fine dust that is attracted to the water.

  FIG. 6 is a plan view showing the upper case removed from the suction port body according to the embodiment of the present invention.

  As shown in FIG. 6, the suction port 28 of the suction port body 26 according to the present embodiment opens greatly in the width direction of the front half of the lower case 37. The opening edge of the suction port 28 is connected to a partition wall 69 extending in the height direction of the lower case 37. The partition wall 69 partitions the cleaning body chamber 62. The rotary cleaning body 29 is housed in the cleaning body chamber 62.

  The ceiling of the cleaning body chamber 62 is the upper case 38. That is, the lower case 37 and the upper case 38 cooperate to partition the cleaning body chamber 62.

  The relay pipe 63 is located at the center of the rear half of the lower case 37. The relay pipe 63 is a pipe having a maximum diameter substantially equal to that of the connection pipe portion 33, in particular, the rotary connection pipe portion 48, and substantially fits in the front projection region S (between two-dot chain lines in FIG. 6) of the connection pipe portion 33. .

  The ion generating part support bridge 65 avoids the connection part between the cleaning body chamber 62 and the relay pipe 63, extends from both side parts of the connection part to the center part of the front wall of the lower case 37, and extends back and forth above the center part of the suction port 28. Straddle.

  The electric motor 31 is positioned on either the left or right side of the relay pipe 63 that forms the flow path 36, specifically on the left side, and is housed in the lower case 37. The electric motor 31 rotationally drives the rotary cleaning body 29 via an endless belt 71 that is housed in the left end portion of the lower case 37 and extends in the front-rear direction.

  The negative ion generator 30 is a high-voltage power supply that is located on the left or right side of the relay pipe 63 that forms the flow path 36, specifically, on the right side, and that is housed in the lower case 37 and thus the suction port body 32. And an ion generator 56 that is electrically connected to the high-voltage power supply 55 and emits negative ions to the atmosphere of the suction port body 32.

  The ion generator 56 is a needle-like electrode whose tip is directed forward of the suction port body 32. In addition, the ion generator 56 is located at the approximate center and upper part in the width direction of the suction port body 32.

  Similar to the high voltage power supply unit 55, the relay board 61 is located on the left or right side of the relay pipe 63, specifically on the right side, and is accommodated in the lower case 37.

  The suction port body 32 is adjusted in the vicinity of the rotation center line CL of the rotary connection pipe portion 48 by appropriately adjusting the separation distance between the relay pipe 63 and the electric motor 31 and the separation distance between the relay pipe 63 and the high voltage power supply portion 55. The center of gravity position CG of the entire suction port body 32 is arranged. The relay board 61 also adjusts the position of the center of gravity CG of the entire suction port body 32 together with the high voltage power supply 55.

  The center of gravity position CG of the entire suction port body 32 does not need to completely coincide with the rotation center line CL of the rotary connection pipe portion 48, and the suction force is taken into consideration in consideration of the frictional force between the relay pipe 63 and the rotary connection pipe portion 48. It may be in a range in which the suction port main body 32 is prevented from being largely inclined to such an extent that the troublesomeness of rearranging the mouth body 26 from the surface to be cleaned does not occur.

  Further, the electric motor 31 and the high voltage power supply unit 55 may be located at either the left or right position as long as the relay pipe 63 is interposed therebetween. That is, the electric motor 31 may be located on the right side of the relay pipe 63, and the high voltage power supply unit 55 may be located on the left side of the relay pipe 63.

  Furthermore, the electric motor 31 and the high voltage power supply 55 may be positioned so as to sandwich the rotary connecting pipe 48 instead of the relay pipe 63. In this case, the suction port main body 32 adjusts the separation distance between the rotary connection pipe portion 48 and the electric motor 31 and the separation distance between the rotary connection pipe portion 48 and the high voltage power supply portion 55 as appropriate. The center of gravity position CG of the entire suction port body 32 is arranged in the vicinity of the rotation center line CL.

  The wheel pair 72 in the vicinity of the opening edge of the suction port 28 is close to the relay pipe 63 in a plan view and sandwiches it from the left and right. The distance between the wheel pair 72 (so-called tread) is positioned so as to approach the relay pipe 63 while slightly exceeding the width dimension of the relay pipe 63 in the left-right direction.

  On the other hand, the wheel pair 73 located at the rear bulge portion 39 of the lower case 37 is close to the connecting pipe portion 33, more specifically, the rotating connecting pipe portion 48 in plan view, and sandwiches it from the left and right. The distance between the wheel pair 73 is positioned so as to be close to the rotary connecting pipe 48 while slightly exceeding the diameter of the rotary connecting pipe 48.

  The suction port body 26 according to the present embodiment includes a connecting pipe portion 33 that is a rotation shaft of the suction port body 32 by disposing the electric motor 31 and the high voltage power supply unit 55 having a large mass on the left and right sides of the suction port body 32. In particular, the unbalance of the center of gravity position CG with respect to the rotary connecting pipe portion 48 is eliminated. Accordingly, the suction port body 26 maintains the posture of the suction port body 32 even when it is separated from the surface to be cleaned, and suppresses the suction port body 32 from being largely inclined. Therefore, the suction port body 26 according to the present embodiment does not require an operation for correcting the posture of the suction port body as required by the conventional suction port body when re-grounding to the surface to be cleaned. Annoyance can be eliminated.

  Further, the suction port body 26 according to the present embodiment discharges negative ions from the ion discharge port 42 located in the upper half of the suction port body 26 to the atmosphere of the suction port body 26. The negative ions released to the atmosphere of the suction port body 26 are guided to the suction port 28 on the flow of air sucked by the vacuum cleaner 1. In this process, the negative ions are positively charged and float around the suction port body 26 or neutralize the charge of the dust attracted to the surface to be cleaned. Dust that has lost its charge is easily caught by the air flow toward the suction port 28 and flows into the suction port 28 without being attracted to the surface to be cleaned. Therefore, the suction port body 26 according to the present embodiment can supply negative ions to the air sucked into the suction port 28, neutralize the positively charged dust, and improve the dust collecting power. That is, the suction port body 26 according to the present embodiment can achieve both the effect of suppressing the inclination of the suction port main body 32 away from the surface to be cleaned and the effect of improving the dust collection force due to negative ions.

  Furthermore, the suction port body 26 according to the present embodiment efficiently supplies negative ions to the air flowing into the suction port 28 by directing the ion discharge port 42 to the front of the suction port body 26 and is exposed to the air flow. Efficiently neutralizes the dust charge and improves dust collection.

  Furthermore, the suction port body 26 according to the present embodiment has a larger amount of minus in the advancing direction of the suction port body 26 by directing the tip of the ion generator 56 that is a needle-like electrode to the front of the suction port body 26. Ions can be supplied to improve the dust collection force in the direction.

  In addition, the suction port body 26 according to the present embodiment is efficient in the flow of air toward the suction port 28 immediately below the ion generation unit 56 by positioning the ion generation unit 56 at substantially the center and upper part in the width direction of the suction port body 32. In addition, negative ions can be supplied, and negative ions can be supplied over the entire area of the suction port 28 which is wide to the left and right, so that the dust collecting force in the entire area of the suction port 28 can be improved.

  Furthermore, the suction port body 26 according to the present embodiment discharges the electric charge of the surface to be cleaned by bringing the neutralizing brush 52 into contact with the surface to be cleaned, and the dust charged to a polarity different from that of the surface to be cleaned is attracted to the surface to be cleaned. I will prevent it. That is, the suction port body 26 according to the present embodiment neutralizes the charge of the dust with negative ions, and discharges the charge on the surface to be cleaned with the charge eliminating brush 52, thereby further improving the dust collecting power.

  Therefore, according to the vacuum cleaner 1 and the suction port body 26 according to the present embodiment, it is possible to maintain the posture in which the electric rotary cleaning body 29 and the negative ion generator 30 are easily rearranged on the surface to be cleaned. it can.

  The vacuum cleaner 1 according to the present invention is not limited to the canister type vacuum cleaner 1, and may be an upright type, a stick type, a handy type, or an autonomous type vacuum cleaner 1.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner 2 Vacuum cleaner main body 3 Pipe part 5 Main body case 6 Wheel 7 Dust separation dust collection part 8 Electric blower 9 Main body control part 11 Power cord 12 Main body connection port 14 Power plug 19 Connection pipe 21 Dust collection hose 22 Hand control pipe 23 Grasping part 24 Operation part 24a Stop switch 24b Start switch 25 Extension pipe 26 Suction port body 28 Suction port 29 Rotating cleaning body 30 Negative ion generator 31 Electric motor 32 Suction port body 33 Connecting pipe part 35 Bottom surface 36 Channel 37 Lower case 38 Upper case 39 Rear bulging part 41 Wheel 42 Ion release port 43 Raised 45 Raised cloth 46 Floor detection switch 47 Wheel 48 Rotating connection pipe part 49 Oscillating connection pipe part 51 Hair 52 Static elimination brush 53 Switch 55 High voltage power supply part 56 Ion Generator 57 Half-wave rectifier circuit 58 DC-DC converter 59 PTC thermistor 60a, 60b Relay connector Motor 61 relay board 62 cleaning body chamber 63 relay pipe 64 flange 65 ion generator support bridge 66 ion generating unit accommodating chamber 67 ion generating unit housing wall 69 partition wall 71 belts 72 and 73 wheelsets

Claims (4)

A suction port body having a suction port opening in the front half of the bottom surface and containing a flow path connected to the suction port;
A connecting pipe that is located at the center of the rear of the suction port body and is rotatable about an axis along the front-rear direction of the suction port body;
A rotatable cleaning body located at the suction port and rotatable;
An electric motor that is positioned on either the left or right side of the connection pipe or the flow path and that fits in the suction port body and generates the driving force of the rotary cleaning body;
A high-voltage power supply unit that is located in either the left or right side of the connection pipe or the flow path and is housed in the suction port body;
A suction port body comprising: an ion generation unit that is electrically connected to the high-voltage power supply unit and releases negative ions to the atmosphere of the suction port body. The suction port body according to claim 1, wherein the ion generation part is a needle-like electrode whose tip is directed forward of the suction port body. The suction port body according to claim 1, wherein the ion generation unit is located at a substantially center and an upper portion in the width direction of the suction port body. A suction port according to any one of claims 1 to 3,
An electric blower fluidly connected to the suction port body;
And a vacuum cleaner main body for housing the electric blower.

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