JP2019217019A - Suction port body and vacuum cleaner - Google Patents

Abstract

To propose a suction port body that can readily remove dusts from a minute groove such as irregularities of Tatami and a joint of flooring, and to provide a vacuum cleaner.SOLUTION: A suction port body 26 includes: a suction port body part 32 including a first suction port 28, a suction chamber 51 connected to the first suction port 28, and a relay tube 52 connected to the suction chamber 51; and a rotary cleaning body 29 disposed in the suction chamber 51 and supported to the suction port body part 32 so as to be rotatable. The rotary cleaning body 29 has a second suction port 73 disposed in an outer peripheral part.SELECTED DRAWING: Figure 3

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 provided with a rotary cleaning body having crimped and crimped hair is known. The curly hair has a spherical tip.

  Curly hair has longer hair itself than straight hair, and has good flexibility when a force for bending the tip of the hair is applied. For this reason, the conventional suction port body is polished so that the spherical portion at the tip of the hair slides on the carpet on a fibrous surface to be cleaned such as a carpet. At this time, the spherical portion is separated from the carpet so as to catch the fibrous dust entangled with the carpet. The dust separated from the carpet is easily sucked into the suction port by the suction negative pressure.

  That is, the conventional suction opening body efficiently removes fibrous dust entangled in the carpet.

JP 2003-210366 A

  It is difficult to remove dust that has entered fine grooves such as unevenness of tatami mats and flooring seams with curly hair having a spherical tip.

  Therefore, the present invention proposes a suction opening body and a vacuum cleaner that can easily remove dust from minute grooves such as unevenness of a tatami or a seam of a flooring.

  In order to solve the above problems, a suction port body according to an embodiment of the present invention includes a suction port body including a first suction port, a suction chamber connected to the first suction port, and a discharge port connected to the suction chamber. And a rotary cleaning body disposed in the suction chamber and rotatably supported by the suction port main body, wherein the rotary cleaning body has a second suction port disposed on an outer peripheral portion. I have.

  Further, the vacuum cleaner according to the embodiment of the present invention includes a cleaner body, an electric blower housed in the cleaner body to generate a negative pressure, and the suction port body fluidly connected to the electric blower. And

The perspective view of the appearance of the vacuum cleaner concerning the embodiment of the present invention. FIG. 2 is a perspective view showing the suction port body according to the embodiment of the present invention from the right front. The typical longitudinal section of the suction mouth object concerning the embodiment of the present invention. The top view of the suction opening object concerning the embodiment of the present invention. The perspective view of the rotary cleaning body of the suction opening object concerning the embodiment of the present invention. FIG. 4 is a cross-sectional view of a rotary cleaning body, a bearing, and a communication pipe of the suction port body according to the embodiment of the present invention. The typical longitudinal section of other examples of the suction mouth object concerning the embodiment of the present invention.

  An embodiment of a suction opening body and a vacuum cleaner according to the present invention will be described with reference to FIGS. 1 to 7. In the drawings, the same or corresponding components are denoted by the same reference numerals.

  FIG. 1 is a perspective view of the external appearance of the vacuum cleaner according to the 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. The vacuum cleaner 1 includes a cleaner main body 2 that can travel on a surface to be cleaned, and a pipe portion 3 that can be attached to and detached from the cleaner main body 2.

  The cleaner main body 2 includes a main body case 5, a pair of wheels 6 provided on left and right sides of the main body case 5, a detachable dust separating device 7 disposed in a front half of the main body case 5, and a main body case 5. 5 includes an electric blower 8 housed in the latter half of the apparatus 5, a main body control unit 9 for mainly controlling the electric blower 8, and a power cord 11 for guiding electric power to the electric blower 8.

  The cleaner body 2 drives the electric blower 8 with electric power supplied through the power cord 11. The suction negative pressure generated by driving the electric blower 8 acts on the pipe 3. The vacuum cleaner 1 sucks dust-containing air (hereinafter referred to as “dust-containing air”) from the surface to be cleaned by the suction negative pressure acting on the pipe portion 3 and separates the dust from the dust-containing air. Collects and accumulates dust after separation, and exhausts clean air from which dust has been removed.

  A main body connection port 12 is provided in a front portion of the main body case 5. The main body connection port 12 is a fluid inlet of the cleaner main body 2. The main body connection port 12 has a joint structure to which the pipe portion 3 can be attached and detached. The main body connection port 12 fluidly connects the pipe portion 3 to the dust separation device 7.

  The wheels 6 are large-diameter traveling wheels that support the cleaner body 2. The cleaner body 2 includes casters (not shown) provided on the bottom surface of the body case 5 in addition to the wheels 6.

  The dust separating device 7 separates dust from the dust-containing air flowing into the cleaner body 2, collects and accumulates the dust, and sends the clean air from which the dust is removed to the electric blower 8. The dust separating device 7 includes a filter for filtering and collecting dust, and inertia such as centrifugal separation (cyclone separation) and straight-line separation (separation method for separating dust and air by a difference in inertial force between straight-moving air and dust). This is a separation device that accumulates dust by separation.

  The electric blower 8 sucks air from the dust separation device 7 to generate a negative pressure (suction negative pressure).

  The main body control unit 9 includes a microprocessor (not shown) and a storage device (not shown) for storing various arithmetic programs executed by the microprocessor, parameters of the arithmetic programs, and the like. The storage device stores a plurality of preset operation modes. The plurality of operation modes set in advance correspond to a user operation in which the pipe unit 3 receives an input. Different input values (input values of the electric blower 8) are set in each operation mode. The main body control section 9 selects an operation mode corresponding to the operation content from a plurality of preset operation modes in accordance with an operation of a user who receives an input from the tube section 3. Further, the main body control unit 9 reads out the setting content of the selected operation mode from the storage unit, and operates the electric blower 8 according to the read out setting content.

  The power cord 11 supplies electric power to the cleaner body 2 from a wiring plug-in connector (not shown, a so-called outlet). A plug 14 is provided at a free end of the power cord 11.

  The tube portion 3 sucks dust-containing air from the surface to be cleaned by the negative pressure applied from the cleaner body 2. The pipe section 3 sends the sucked dust-containing air to the cleaner body 2. The pipe section 3 includes a connection pipe 19 as a joint detachably connected to the main body connection port 12 of the cleaner body 2, a dust collection hose 21 fluidly connected to the connection pipe 19, and a dust collection hose 21. A hand-operated tube 22 fluidly connected, a grip portion 23 protruding from the hand-operated tube 22, an operation portion 24 provided on the grip portion 23, and an extension tube 25 detachably connected to the hand-operated tube 22; , A suction port body 26 detachably connected to the extension pipe 25.

  The connection pipe 19 is fluidly connected to the dust separation device 7 through the main body connection port 12.

  The dust collection hose 21 is a long, flexible, substantially cylindrical hose. One end (here, the rear end) of the dust collection hose 21 is fluidly connected to the connection pipe 19. The dust collection hose 21 is fluidly connected to the dust separation device 7 through the connection pipe 19.

  The hand operation pipe 22 has an air passage connecting the dust collection hose 21 and the extension pipe 25. One end (here, the rear end) of the hand operation tube 22 is fluidly connected to the other end (here, the front end) of the dust collection hose 21. The hand operation pipe 22 is fluidly connected to the dust separation device 7 through the dust collection hose 21 and the connection pipe 19 sequentially.

  The grip portion 23 is a portion that can be gripped by a user to operate the vacuum cleaner 1 by hand. The grip portion 23 projects from the hand control tube 22 in an appropriate shape that can be easily gripped by the user's hand.

  The operation unit 24 includes a switch that receives a selection operation of each operation mode. Specifically, the operation unit 24 includes a stop switch 24a that receives an operation to stop the operation of the electric blower 8, and a start switch 24b that receives an operation to start the operation of the electric blower 8. The stop switch 24a and the start switch 24b are electrically connected to the main body control unit 9. The user of the electric vacuum cleaner 1 can select the operation mode of the electric blower 8 by operating the operation unit 24. During operation of the electric blower 8, the start switch 24b also functions as an operation mode selection switch. During operation of the electric blower 8, the main body control unit 9 switches the operation mode in the order of strong → medium → weak → strong →... Every time an operation signal is obtained from the start switch 24b. The operation unit 24 includes a plurality of operation mode selection switches, such as a weak operation switch (not shown), a medium operation switch (not shown), and a strong operation switch (not shown), instead of the single start switch 24b. It may be prepared for.

  The extension tube 25 having a telescopic structure in which a plurality of cylindrical bodies are overlapped with each other is an elongated and substantially cylindrical tube that can expand and contract. At one end (here, the rear end) of the extension tube 25, a joint structure that is detachable from the other end (here, the front end) of the hand operation tube 22 is provided. The extension pipe 25 is fluidly connected to the dust separation device 7 through the hand operation pipe 22, the dust collection hose 21, and the connection pipe 19.

  The suction port body 26 can run or slide on a surface to be cleaned such as a wooden floor or a carpet. The suction port body 26 has a first suction port 28 on the bottom surface facing the surface to be cleaned in the running state or the sliding state. In addition, the suction port body 26 includes a rotatable rotary cleaning body 29 disposed in the first suction port 28, and an electric motor 31 that drives the rotary cleaning body 29 to rotate. At one end (here, the rear end) of the suction port body 26, a joint structure that is detachable from the other end (here, the front end) of the extension tube 25 is provided. This joint structure is a universal joint (universal joint). The suction port body 26 is fluidly connected to the dust separation device 7 through the extension pipe 25, the hand operation pipe 22, the dust collection hose 21, and the connection pipe 19. That is, the suction port body 26, the extension pipe 25, the hand operation pipe 22, the dust collection hose 21, the connection pipe 19, and the dust separation device 7 are suction air paths that lead from the electric blower 8 to the first suction port 28.

  The electric vacuum cleaner 1 starts the electric blower 8 when the operation switch 24b receives a user's operation when the electric blower 8 is stopped. For example, the electric vacuum cleaner 1 operates the electric blower 8 in the strong operation mode when the start switch 24b is operated when the electric blower 8 is stopped, and operates the electric blower 8 when the start switch 24b is operated again. 8 is operated in the medium operation mode, and when the start switch 24b is operated three times, the electric blower 8 is operated in the weak operation mode, and so on. The strong operation mode, the medium operation mode, and the weak operation mode are a plurality of operation modes set in advance. The input value to the electric blower 8 is smaller in the order of the strong operation mode, the medium operation mode, and the weak operation mode. The started electric blower 8 exhausts air from the dust separation device 7 to make the inside thereof a negative pressure (suction negative pressure).

  The negative pressure acting on the dust separating device 7 is sequentially passed through the main body connection port 12, the connection pipe 19, the dust collection hose 21, the hand operation pipe 22, the extension pipe 25, and the suction port body 26 to the first suction port 28. Works. The vacuum cleaner 1 suctions the dust on the surface to be cleaned together with the air and cleans the surface to be cleaned by the negative pressure applied to the first suction port 28. The dust separating device 7 separates and accumulates dust from the dust-containing air sucked into the electric vacuum cleaner 1 and sends the clean air from which the dust is separated to the electric blower 8. The electric blower 8 exhausts the air sucked from the dust separating device 7 to the outside of the cleaner body 2.

  Next, the suction port body 26 will be described in detail.

  FIG. 2 is a perspective view showing the suction opening according to the embodiment of the present invention from the right front.

  As shown in FIG. 2, the suction port body 26 according to the present embodiment includes a substantially rectangular parallelepiped suction port main body portion 32 and a connection pipe portion 33 provided at a rear portion of the suction port main body portion 32.

  The front, rear, left, right, and upper and lower sides of the suction opening body 26 will be described with reference to the user of the vacuum cleaner 1. The direction of the solid arrow X in FIG. 2 is the forward or forward direction of the suction port body 26, and the opposite direction is the backward or backward direction. Further, the direction of the solid arrow Y in FIG. 2 is to the left of the suction port body 26, and the opposite direction is to the right. Further, the direction of the solid arrow Z in FIG. 2 is above the suction port body 26, and the opposite direction is below.

  The size (width) in the left-right direction of the inlet body 32 is longer than the size (depth) in the front-rear direction. In other words, the suction port main body 32 has a short side in the front-rear direction and a long side in the left-right direction. The suction port main body 32 includes a box-shaped lower case 41 whose upper part is open, and an upper case 42 that covers the lower case 41. The upper case 42 includes an upper front case 43 disposed on the front side and an upper rear case 44 disposed on the rear side.

  The connection pipe part 33 is provided at the rear part of the suction port main body part 32 and substantially at the center in the width direction. The connection pipe 33 includes a rotation connection pipe 46 that can rotate with respect to the suction port main body 32, and a swing connection pipe 47 that can swing with respect to the rotation connection pipe 46.

  The rotary connection pipe portion 46 rotates around an axis (an axis coinciding 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 part 47 swings about an axis orthogonal to the rotation axis (an axis coinciding with the X axis or an axis parallel to the X axis) of the rotary connection pipe part 46. The free end of the swing connection pipe part 47 is a joint detachable from the free end of the extension pipe 25.

  FIG. 3 is a schematic longitudinal sectional view of the suction port body according to the embodiment of the present invention.

  FIG. 4 is a plan view of the suction port body according to the embodiment of the present invention.

  In FIG. 4, the upper case 42 is omitted.

  As shown in FIGS. 3 and 4, the suction port body 26 according to the present embodiment includes a suction port main body 32, a rotary cleaning body 29 rotatably supported by the suction main body 32, and a rotary cleaning body 29. And a suction port control unit 49 for controlling the operation of the motor 31.

  The suction port main body 32 has a first suction port 28, a suction chamber 51 connected to the first suction port 28, and a relay pipe 52 serving as a discharge port connected to the suction chamber 51. The suction port main body 32 has a machine room 53 in which the electric motor 31 is housed, and a control room 55 in which the suction body control unit 49 is housed.

  The lower case 41 and the upper rear case 44 of the suction port main body 32 partition most of the machine room 53 and the control room 55. The lower case 41, the upper front case 43, and the upper rear case 44 define the suction chamber 51. In other words, the lower case 41 partitions the lower half of the suction chamber 51, the lower half of the machine room 53, and the lower half of the control chamber 55. The upper rear case 44 partitions the upper half of the machine room 53 and the upper half of the control room 55, and closes the upper part of the machine room 53 and the upper part of the control room 55. The upper front case 43 and the upper rear case 44 partition the upper half of the suction chamber 51 and close the upper part of the suction chamber 51. The upper front case 43 corresponds to the outer wall of the suction chamber 51. The upper rear case 44 separates the upper half of the suction chamber 51 from the upper half of the machine chamber 53, and separates the upper half of the suction chamber 51 from the upper half of the control chamber 55.

  The suction chamber 51 is defined in the front half of the suction port main body 32. The suction chamber 51 extends in the width direction of the suction port main body 32. The suction chamber 51 is connected to the first suction port 28 arranged on the bottom surface of the suction port main body 32. In other words, the suction chamber 51 is opened through the first suction port 28.

  The machine room 53 extends from the left half of the rear half of the suction port main body 32 to the left. In other words, the machine room 53 surrounds the left side of the suction chamber 51 and the rear left half. The left side of the suction chamber 51 in the machine room 53 is partitioned by an upper front case 43 and a lower case 41.

  The control chamber 55 is arranged in the right half of the rear half of the suction port main body 32.

  The rotary cleaning body 29 is arranged in the suction chamber 51. The rotary cleaning body 29 is a roller-shaped cleaning body, and is supported by the suction port main body 32 via a pair of bearings 57 and 58. In other words, the pair of bearings 57 and 58 rotatably support the rotary cleaning body 29 on the suction port main body 32. The pair of bearings 57 and 58 are provided at respective ends of the rotary cleaning body 29.

  The electric motor 31 is arranged in a rear part of the suction chamber 51 in the machine room 53. The electric motor 31 includes an output shaft 31 a protruding toward the inner surface of the left side wall of the suction port main body 32. The rotation center line of the output shaft 31a is substantially parallel to the rotation center line of the rotary cleaning body 29.

  The suction port control unit 49 operates the electric motor 31 with electric power supplied from the cleaner body 2 through the connection pipe 19, the dust collection hose 21, the hand operation pipe 22 and the extension pipe 25.

  The suction port body 26 includes a relay pipe 52 that fluidly connects the suction chamber 51 and the connection pipe section 33 (more specifically, the rotary connection pipe section 46), and a communication air passage that reaches from the relay pipe 52 to the rotary cleaning body 29. 59, a motor support 61 for floatingly supporting the motor 31 on the suction port main body 32, a driving gear 62 fixed to the output shaft 31a of the motor 31, a driven gear 63 provided on the rotary cleaning body 29, and a driving gear And an endless belt 64 wound around the driven gear 63 and the driven gear 63 to transmit a driving force from the electric motor 31 to the rotary cleaning body 29.

  The relay pipe 52 is a discharge port of the suction chamber 51. The relay pipe 52 is disposed at the rear center of the suction chamber 51, that is, between the machine chamber 53 and the control chamber 55. The relay pipe 52 separates the machine room 53 and the control room 55.

  The communication air passage 59 is connected to an air passage downstream of the suction chamber 51, specifically, to the relay pipe 52. The communication air passage 59 extends from the wall surface of the relay pipe 52, crosses the suction chamber 51, and reaches the bearing 57 which is one of the pair of bearings 57, 58 via the right side of the suction port main body 32.

  The motor support 61 is interposed between the suction port main body 32 and the motor 31 to block vibration. The motor support 61 is a rubber elastic body such as silicon rubber or an elastic body such as a spring. The motor supporting portion 61 insulates the vibration accompanying the operation of the motor 31 from transmitting to the suction main body 32, and insulates the external force applied to the suction main body 32 from transmitting to the motor 31.

  The main driving gear 62, the driven gear 63, and the belt 64 are a power transmission mechanism 65 that transmits a driving force from the electric motor 31 to the rotary cleaning body 29. The driving gear 62 is arranged in a rear part of the suction chamber 51 in the machine chamber 53. The driven gear 63 is arranged on the left side of the suction chamber 51. The belt 64 is arranged from the rear part of the suction chamber 51 to the left part of the suction chamber 51 in the machine chamber 53.

  Next, the rotary cleaning body 29 will be described in detail.

  FIG. 5 is a perspective view of the rotary cleaning body of the suction opening body according to the embodiment of the present invention.

  As shown in FIG. 5 in addition to FIGS. 3 and 4, the rotary cleaning body 29 of the suction opening body 26 according to the present embodiment includes a shaft core 71 and a plurality of outer peripheral members protruding from the shaft core 71. And a blade 72. Further, the rotary cleaning body 29 has a second suction port 73 arranged on the outer peripheral portion.

  The shaft core 71 is cylindrical. The inside of the tube is an air passage 75. That is, the shaft core portion 71 has the air passage 75 therein. The air passage 75 is connected to the second suction port 73.

  The shaft core 71 is multiplexed, for example, double. The inner shaft 76 does not rotate with respect to the suction port main body 32 (is not rotating), and the outer shaft 77 can rotate around the inner shaft 76. The air passage 75 is a space inside the inner shaft core 76.

  The inner shaft core 76 has a C-shaped cross section. In other words, the inner shaft core 76 has a suction opening 78 that opens only in the opening direction of the first suction port 28, that is, in the direction of the ground plane P of the rotary cleaning body 29. On the other hand, the outer shaft core 77 detachably holds the blade 72. That is, the outer shaft 77 and the blade 72 rotate integrally around the inner shaft 76. Each of the blades 72 approaches or moves away from the ground plane P of the suction port main body 32 and, consequently, the surface f to be cleaned with the rotation of the outer shaft core 77.

  The outer shaft core 77 has a holding groove 79 for holding a root portion of the blade 72. The holding groove 79 reaches one end of the outer shaft core 77. The blade 72 is inserted from the open end of the holding groove 79.

  The plurality of blades 72 are arranged at substantially equal intervals in the circumferential direction of the rotary cleaning body 29. Each blade 72 radially extends around the shaft core 71 in the radial direction of the rotary cleaning body 29, and is spirally wound around the outer periphery of the shaft core 71 in the axial direction of the rotary cleaning body 29. The blade 72 is a molded product of a soft material such as silicone rubber. A second suction port 73 is provided at the tip (projecting end, free end) of the blade 72. The blade 72 is a hollow body having an air passage 81 that connects the air passage 75 of the shaft core 71 and the second suction port 73.

  When the blade 72 approaches the ground plane P of the suction port main body 32 with the rotation of the outer shaft core 77 and the second suction port 73 of the blade 72 faces the ground plane P of the suction port main body 32, the blade 72 Is connected to the suction opening 78 of the inner shaft core 76, and a negative pressure acts on the second suction port 73. That is, when the second suction port 73 faces the ground plane P of the suction port main body 32, the outer shaft 77 connects the suction opening 78 of the inner shaft 76 with the second suction port 73 of the blade 72, A negative pressure is applied to the two suction ports 73.

  Although the blades 72 shown in FIG. 5 are arranged at a wider interval than the thickness of the blades 72 themselves, the blades 72 themselves are thicker in the circumferential direction of the shaft core 71 and the intervals are narrower. There may be.

  The second suction port 73 is apart from the ground plane P of the suction port main body 32. That is, the second suction port 73 always moves above the ground plane P of the suction port main body 32 even when the rotary cleaning body 29 is rotating. The plurality of second suction ports 73 are arranged in the longitudinal direction of the rotary cleaning body 29. That is, the blade 72 has a plurality of second suction ports 73 arranged along the tip. A rib-shaped partition 82 is provided between adjacent second suction ports 73. The second suction port 73 may be open continuously over the entire length of the blade 72 without being partitioned on the way.

  FIG. 6 is a cross-sectional view of a rotary cleaning body, a bearing, and a communication pipe of the suction port body according to the embodiment of the present invention.

  As shown in FIG. 6, the communication air passage 59 of the suction port body 26 according to the present embodiment passes through the bearing 57 which is one of the pair of bearings 57, 58 and the air passage 75 of the shaft core 71 and the suction chamber 51. It communicates with an air passage on the downstream side, specifically, the relay pipe 52.

  The bearing 57 is an outer sleeve 85 that holds the shaft core 71 of the rotary cleaning body 29, an inner sleeve 86 that is connected to the communication air passage 59, and is fixed to the inner sleeve 86 and rotatably supports the outer sleeve 85. A bearing ring 87 (so-called metal).

  The inner sleeve 86 and the communication air passage 59 include a detachable joint portion 89. A sealing material, for example, an O-ring (not shown) is sandwiched between the joints 89. The inner sleeve 86 may be integrated with the inner shaft core 76 of the shaft portion 71. In this case, the joint 89 between the inner sleeve 86 and the inner shaft core 76 preferably has positioning for determining the direction of the suction opening 78 of the inner shaft core 76, for example, unevenness (not shown).

  The outer sleeve 85 includes a housing part 91 of an appropriate shape surrounding the outer peripheral surface of the bearing ring 87, and a coupling part 92 detachably connected to the outer shaft 77 of the shaft 71.

  The coupling portion 92 is connected to the outer shaft 77 of the shaft 71 by, for example, unevenness (not shown). That is, the bearing 57 is detachably attached to the shaft core portion 71 and is attached integrally with the rotation. Note that the bearing 58 on the side closer to the power transmission mechanism 65 may be detachably attached to the shaft core 71. That is, one of the pair of bearings 57 and 58 only needs to be detachably attached to the shaft core 71. The holding groove 79 of the outer shaft core 77 is open to the shaft end where the removable bearings 57 and 58 are mounted.

  The suction port body 26 according to the present embodiment sucks dust on the surface f to be cleaned together with air from the first suction port 28 on the bottom surface like a conventional suction port body. The dust sucked into the first suction port 28 is guided to the cleaner body 2 through the suction chamber 51, the relay pipe 52, and the connection pipe 33.

  By the way, as shown in FIG. 3, the surface to be cleaned f such as a tatami mat or a flooring has a small groove G such as a tatami mat or a flooring seam. It is difficult to remove the fine dust entering such minute grooves G by the air sucked into the first suction port 28.

  Therefore, when the second suction port 73 of the rotary cleaning body 29 approaches the surface f to be cleaned, the suction port body 26 according to the present embodiment fluidly connects the air passage 75 of the shaft 71 with the second suction port 73. And the air is rapidly drawn in from the second suction port 73. The opening area of the second suction port 73 is extremely smaller than that of the first suction port 28. Therefore, the flow of the air sucked into the second suction port 73 becomes faster than the flow of the air sucked into the first suction port 28. In addition, the second suction port 73 sucks air from the minute groove G more directly. The air flow in the minute groove G flies up the fine dust entering the minute groove G and guides it to the second suction port 73. Further, the fine dust soared from the minute groove G is also sucked into the first suction port 28.

  Next, another example of the suction port body 26 according to the present embodiment will be described. In the suction port body 26A described as another example, the same components as those of the suction port body are denoted by the same reference numerals, and overlapping description will be omitted.

  FIG. 7 is a schematic longitudinal sectional view of another example of the suction port according to the embodiment of the present invention.

  As shown in FIG. 7, the suction port body 26 </ b> A according to the present embodiment includes a brush 95 provided along with the second suction port 73.

  The rotary cleaning body 29 of the suction opening body 26A is rotated in one direction indicated by a solid arrow in FIG. This rotation direction is a direction that assists the suction port body 26 to advance. The brush 95 is arranged immediately after the second suction port 73 in the rotation direction of the rotary cleaning body 29.

  The second suction port 73 is separated from the ground plane P of the suction port main body 32, while the brush 95 sweeps the surface f to be cleaned with the rotation of the rotary cleaning body 29. It protrudes from the ground plane P. The brush 95 is preferably provided along the entire length of the blade 72 along the second suction port 73.

  In the suction port body 26A according to the present embodiment, when the second suction port 73 of the rotary cleaning body 29 approaches the surface f to be cleaned, the air passage 75 of the shaft core 71 and the second suction port 73 are fluidly connected. Then, air is rapidly sucked from the second suction port 73. The opening area of the second suction port 73 is extremely smaller than that of the first suction port 28. Therefore, the flow of the air sucked into the second suction port 73 is faster than the flow of the air sucked into the first suction port 28. In addition, the second suction port 73 sucks air from the minute groove G more directly. The flow of air in the minute groove G flies the fine dust that has entered the minute groove G. The dust blown up from the minute groove G is swept up by the brush 95 and guided to the second suction port 73. The fine dust swept up by the brush 95 is also sucked into the first suction port 28.

  The suction port bodies 26 and 26A and the vacuum cleaner 1 according to the present embodiment include a second suction port 73 arranged on the outer peripheral portion of the rotary cleaning body 29. Therefore, the suction opening bodies 26 and 26A and the vacuum cleaner 1 directly suck up fine dust that has entered the minute groove G such as a tatami mat or a flooring joint. By the flow of air in the minute groove G, the suction opening 26 and the vacuum cleaner 1 can clean fine dust that has entered the minute groove G.

  In addition, the suction port bodies 26 and 26A and the vacuum cleaner 1 according to the present embodiment include a shaft core 71 having an air path 75 connected to the second suction port 73. Therefore, the suction port bodies 26 and 26A and the vacuum cleaner 1 can apply suction negative pressure to the second suction port 73 of the rotating rotary cleaning body 29 with a simple structure.

  Furthermore, the suction port bodies 26 and 26A and the vacuum cleaner 1 according to the present embodiment include a blade 72 that protrudes from the shaft core 71 and has a second suction port 73 as a soft outer peripheral member. Therefore, in the suction port bodies 26 and 26A and the vacuum cleaner 1, the cleaning target surface f has irregularities, and the convex portion of the cleaning target surface f reaches above the ground surface P of the suction port main body portion 32 and the blade 72 Does not damage the surface f to be cleaned.

  Furthermore, the suction port bodies 26 and 26A and the vacuum cleaner 1 according to the present embodiment have the second suction port 73 separated from the ground plane P of the suction port main body 32. Therefore, the suction port bodies 26 and 26A and the vacuum cleaner 1 have a low possibility that the blade 72 contacts the surface to be cleaned f and closes the second suction port 73. Air can be sucked into the air to generate an air flow. This airflow surely sucks up the dust that has entered the minute groove G.

  In addition, the suction port body 26 </ b> A and the electric vacuum cleaner 1 according to the present embodiment include a brush 95 disposed immediately after the second suction port 73 in the rotation direction of the rotary cleaning body 29. Therefore, the suction opening body 26 </ b> A and the electric vacuum cleaner 1 can sweep the dust sucked up from the minute grooves G of the cleaning target surface f from the cleaning target surface f and more reliably suck the dust into the first suction opening 28.

  Furthermore, the suction port bodies 26 and 26A and the vacuum cleaner 1 according to the present embodiment include a plurality of second suction ports 73 arranged in the longitudinal direction of the rotary cleaning body 29. Therefore, the suction port bodies 26 and 26A and the vacuum cleaner 1 can suppress the entire second suction port 73 from being blocked by the sucked dust.

  Furthermore, the suction port bodies 26 and 26A and the vacuum cleaner 1 according to the present embodiment are provided with a communication air path 59 that penetrates the bearing 57 and connects the air path 75 of the shaft core 71 and the relay pipe 52. . Therefore, the suction port bodies 26 and 26A and the vacuum cleaner 1 do not need to generate suction negative pressure acting on the second suction port 73 by means other than the electric blower 8, and the dust sucked into the second suction port 73 Can be combined with the dust sucked into the first suction port 28 and accumulated.

  Further, the suction port bodies 26 and 26A and the vacuum cleaner 1 according to the present embodiment include at least one bearing 57 and 58 detachably attached to the shaft core 71. Therefore, the suction opening bodies 26 and 26A and the vacuum cleaner 1 can easily clean the air passage 75 in the shaft core portion 71.

  Furthermore, the suction opening bodies 26 and 26A and the vacuum cleaner 1 according to the present embodiment include a blade 72 that is detachably provided on the shaft core 71. Therefore, the suction opening bodies 26 and 26A and the vacuum cleaner 1 can easily clean the blade 72 to which fine dust adheres.

  Furthermore, the suction port bodies 26 and 26A and the vacuum cleaner 1 according to the present embodiment are non-rotatable with respect to the suction port main body 32 and open in the direction of the ground surface of the suction port main body 32. And a rotatable shaft around the inner shaft core 76, and connects the suction opening 78 and the second suction port 73 when the second suction port 73 faces the ground surface of the suction port main body 32. An outer shaft core 77. Therefore, when the second suction port 73 of the rotating rotary cleaning body 29 faces the cleaning surface f (ground surface P), the suction port bodies 26 and 26A and the vacuum cleaner 1 suck the suction into the second suction port 73. By applying a negative pressure efficiently, fine dust entering the minute groove G can be more reliably removed.

  Therefore, according to the suction opening bodies 26 and 26A and the vacuum cleaner 1 according to the present embodiment, dust can be easily removed from the minute groove G like the unevenness of the tatami or the joint of the flooring.

  The vacuum cleaner 1 according to the present embodiment is not limited to a canister type, but may be an upright type, a stick type, a handy type, or the like.

  While some embodiments of the invention have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the inventions. These new embodiments can be implemented in other various forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and their equivalents.

  DESCRIPTION OF SYMBOLS 1 ... Vacuum cleaner, 2 ... Vacuum cleaner main body, 3 ... Tube part, 5 ... Main body case, 6 ... Wheels, 7 ... Dust separation device, 8 ... Electric blower, 9 ... Main body control part, 11 ... Power cord, 12 ... Main body connection port, 14 plug-in plug, 19 connection pipe, 21 dust collection hose, 22 manual operation pipe, 23 grip section, 24 operation section, 24a stop switch, 24b start switch, 25 extension Pipes, 26, 26A: suction port body, 28: first suction port, 29: rotary cleaning body, 31: electric motor, 31a: output shaft, 32: suction port main body part, 33: connection pipe part, 41: lower case, 42 ... upper case, 43 ... upper front case, 44 ... upper rear case, 46 ... rotary connection pipe part, 47 ... swing connection pipe part, 49 ... suction port body control part, 51 ... suction chamber, 52 ... relay pipe, 53 ... machine room, 55 ... control room, 57, 58 ... bearing, 59 ... connecting air path, 61 ... electric motor Holder, 62: Main drive gear, 63: Drive gear, 64: Belt, 65: Power transmission mechanism, 71: Shaft core, 72: Blade, 73: Second suction port, 75: Air path, 76: Inner shaft Reference numerals 77, outer shaft core, 78, suction opening, 79, holding groove, 81, air path, 82, partition, 85, outer sleeve, 86, inner sleeve, 87, bearing ring, 89, joint part, 91, housing part , 92 ... coupling part, 95 ... brush.

Claims (11)

A first suction port, a suction chamber connected to the first suction port, and a discharge port connected to the suction chamber, a suction port main body having:
A rotary cleaning body disposed in the suction chamber and rotatably supported by the suction port body.
A suction port body, wherein the rotary cleaning body has a second suction port arranged on an outer peripheral portion. The suction port body according to claim 1, wherein the rotary cleaning body includes a shaft core having an air passage connected to the second suction port. 3. The suction port body according to claim 1, wherein the rotary cleaning body includes a soft outer peripheral member that protrudes from the shaft core and has the second suction port. 4. 4. The suction port body according to claim 1, wherein the second suction port is separated from a ground surface of the suction port main body. 5. The suction port body according to any one of claims 1 to 4, wherein the rotary cleaning body includes a brush that is rotated in one direction and is disposed immediately after the second suction port in the rotation direction. The suction port body according to any one of claims 1 to 5, wherein a plurality of the second suction ports are arranged in a longitudinal direction of the rotary cleaning body. A pair of bearings rotatably supporting the rotary cleaning body on the suction port main body,
3. The suction port body according to claim 2, further comprising: a communication air path that penetrates one of the pair of bearings and connects the air path of the shaft core with a downstream side of the suction chamber. 4. A pair of bearings rotatably supporting the rotary cleaning body on the suction port main body,
The suction port body according to claim 2, wherein one of the pair of bearings is detachably attached to the shaft core. The suction port body according to claim 2, wherein the outer peripheral member is detachably provided on the shaft core portion. The shaft core,
An inner shaft that is non-rotatable with respect to the suction port main body and has a suction opening that opens in the direction of the ground surface of the suction port main body;
An outer shaft that is rotatable around the inner axis and connects the suction opening and the second suction port when the second suction port faces a ground surface of the suction port main body. Item 3. An inlet body according to Item 2. The vacuum cleaner body,
An electric blower that is housed in the cleaner body and generates a negative pressure,
A vacuum cleaner comprising: the suction port body according to any one of claims 1 to 10, which is fluidly connected to the electric blower.

Images