JP5804935B2 - Electric vacuum cleaner - Google Patents

Description

  Embodiments according to the present invention relate to a vacuum cleaner.

  A conventional vacuum cleaner is electrically connected to an electric blower, a vacuum cleaner body that houses the electric blower, a flexible dust collection hose that is fluidly connected to the electric blower and extends from the vacuum cleaner body, and a dust collection hose. An extension pipe to be connected; a bendable connection pipe fluidly connected to the extension pipe; and a suction port at a tip of the connection pipe.

  In this conventional vacuum cleaner, the tube tip can be extended by connecting the connecting pipe and the suction port body to the extension pipe instead of the floor surface suction port body used exclusively for cleaning the floor surface. This vacuum cleaner with an extended tube tip is suitable for a cleaning place at a high place such as a refrigerator.

JP 2010-252999 A

  When a user cleans a cleaning place at a high place, the user pushes the suction port body (cylinder tip of the vacuum cleaner) upward. At this time, the rigidity of the dust collecting hose connecting the suction port body and the vacuum cleaner body greatly affects the usability of the suction port body. Specifically, in order to improve the usability when handling the suction port body at a cleaning place at a high place, the vacuum cleaner flexes and bends flexibly as well as flexibly expands and contracts (the direction of dust collection hose extension) It is preferable to provide a dust collecting hose that expands and contracts. Such a dust collection hose can flexibly bend and extend to follow the operation of the user to push the suction port further away, eliminates slackness due to the force of contraction, and does not exhibit unnecessary length. Does not get in the way.

  On the other hand, when cleaning the floor surface, the user reciprocates the floor suction port body back and forth on the floor surface. At this time, the electric vacuum cleaner moves the main body of the vacuum cleaner so as to follow the user who moves the cleaning location one after another. Also at this time, the rigidity of the dust collecting hose connecting the suction port body and the vacuum cleaner body greatly affects the usability of the suction port body. The dust collecting hose serves as a connecting member that pulls the cleaner body in accordance with the user who moves the cleaning location one after another. In this role, the dust collection hose is flexibly bent and curved, but is required to keep the length without much expansion and contraction and draw the vacuum cleaner body to the user.

  In other words, the dust collection hose has different properties related to expansion and contraction when the tube tip of the vacuum cleaner is directed to a cleaning place at a high place and when the floor suction port is used (easiness of expansion and contraction, difficulty of expansion and contraction). ) Are preferably compatible.

  Then, this invention proposes the vacuum cleaner which changes the elasticity of a dust collection hose according to a use condition, and improves usability.

In order to solve the above problems, a vacuum cleaner according to an embodiment of the present invention includes a flexible first dust collecting hose that fluidly connects an electric blower and a relay pipe, the relay pipe and a suction port body. A second dust collecting hose that is fluidly connected and flexibly bends more than the first dust collecting hose, a grip provided on the relay pipe, the second dust collecting hose, and the suction port body are fluidly connected. And a tube connected to .

The perspective view which shows the external appearance of the vacuum cleaner which concerns on embodiment of this invention. The perspective view which shows the external appearance of the suction inlet body which concerns on embodiment of this invention. The perspective view which shows the longitudinal cross-section of the suction inlet which concerns on embodiment of this invention. The figure which shows one positioning mechanism of the suction inlet concerning the embodiment of this invention. The figure which shows the other positioning mechanism of the suction inlet concerning the embodiment of this invention. The cross-sectional view which shows the control mechanism of the suction inlet body which concerns on embodiment of this invention. The perspective view which shows a part of vacuum cleaner which concerns on embodiment of this invention. The side view which shows a part of vacuum cleaner which concerns on embodiment of this invention. The figure which shows an example of the use condition of the suction inlet which concerns on embodiment of this invention. The figure which shows an example of the use condition of the suction inlet which concerns on embodiment of this invention. The figure which shows an example of the use condition of the suction inlet which concerns on embodiment of this invention. The figure which shows an example of the use condition of the suction inlet which concerns on embodiment of this invention. The figure which shows an example of the use condition of the suction inlet which concerns on embodiment of this invention. The figure which shows an example of the use condition of the vacuum cleaner which concerns on embodiment of this invention.

  An embodiment of a vacuum cleaner according to the present invention will be described with reference to FIGS.

  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 a 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 And a floor suction port body 26.

  The connecting pipe 19 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 floor suction port body 26 is detachably connected to the other end portion (here, the front end portion) of the extension pipe 25. The floor suction port body 26 has a structure that can run or slide on a surface to be cleaned such as a wooden floor or carpet, and has a suction port 28 on the bottom surface that faces the surface to be cleaned in the running state or the sliding state. Have. Further, the floor suction port body 26 includes a rotary cleaning body 29 that is located at the suction port 28 and is rotatable, and an electric motor 31 that can rotationally drive the rotary cleaning body 29. The floor 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 passes through the dust separating and collecting part 7, the main body connection port 12, the connection pipe 19, the dust collection hose 21, the hand operation pipe 22 and the extension pipe 25, and the floor suction port body. It acts on the 26 inlets 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.

  By the way, the floor suction port body 26 is suitable for cleaning a relatively large surface to be cleaned such as a floor surface of a living room. For example, a narrow cleaning place such as a gap in furniture or under a bed, a so-called air conditioner Such an air conditioner indoor unit such as the upper surface of the indoor unit is inferior in use at a cleaning place that is difficult to see at a high place.

  Therefore, the user-friendly suction port body 35 in these narrow cleaning locations and high-sighted cleaning locations, and the second dust collecting hose 85 that connects the suction port body 35 to the hand operating tube 22 will be described.

  FIG. 2 is a perspective view showing an appearance of the suction port body according to the embodiment of the present invention.

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

  As shown in FIGS. 2 and 3, the suction port body 35 according to the present embodiment includes a longitudinal suction body 37 having a suction port 36, a pipe portion 38 fluidly connected to the suction body 37, and a pipe The joints 39 and 41 in the middle of the part 38, and positioning mechanisms 42 and 43 capable of positioning the joints 39 and 41 at a plurality of locations for each appropriate rotation angle φ are provided.

  The suction body 37 includes a flat and hollow bar-shaped base 45 and a brush 46 that extends in the opening direction of the suction port 36 and is aligned with the peripheral edge of the base 45.

  The base 45 has a suction port 36 on the bottom surface. The suction port body 35 is used with the bottom surface of the suction body 37 facing the surface to be cleaned. The base 45 has a suction chamber 48 that can face the surface to be cleaned through the suction port 36. The suction chamber 48 is a part of a flow path through which dust-containing air sucked by the vacuum cleaner 1 passes. In addition, the base 45 includes a sleeve 49 that is in a position deviated from the center in the longitudinal direction of the suction body 37 toward any one end side and serves as a rotation shaft that maintains the opening direction of the suction port 36. The sleeve 49 has a hollow portion connected to the suction chamber 48, and extends from the upper surface of the base 45 to the inside of the pipe portion 38 to constitute the rotation center line C of the suction body 37. The hollow portion of the sleeve 49 is an opening 51 that fluidly connects the suction body 37 and the pipe portion 38. The sleeve 49 is provided with a claw 52 at the distal end portion that is caught by the pipe portion 38 and prevents the sleeve 49 from coming off.

  The brush 46 protrudes toward the normal direction of the bottom surface of the base 45. The locus connecting the tips of the brushes 46 draws a surface substantially parallel to the bottom surface of the base 45.

  The suction body 37 can take the accommodation state adjacent to the pipe part 38 by rotating around the rotation center line C and the unfolded state protruding in the extending direction of the pipe part 38.

  The pipe portion 38 rotatably supports the suction body 37 around the rotation center line C that is biased from the center in the longitudinal direction of the suction body 37 to any one end side. The pipe portion 38 is fluidly connected to the suction body 37 through an opening 51 that is positioned substantially coaxially with the rotation center line C. The tube portion 38 extends in a direction substantially orthogonal to the rotation center line C, and is adjacent to the suction body 37 when viewed in the direction of the rotation center line C.

  Moreover, the pipe part 38 is longer than the suction body 37, and has the parallel part 55 in which the suction body 37 adjoins the pipe part 38, and the parallel part 55 along with the suction body 37, and the surplus part 56 extended independently. The pipe portion 38 has a width substantially equal to that of the suction body 37 at least in the parallel portion 55.

  Further, the pipe portion 38 has an opening 57 into which a sleeve 49 protruding from the suction body 37 is fitted. The sleeve 49 and the opening 57 are bearing portions 58 that support the suction body 37 in the tube portion 38. The tube portion 38 includes a bearing portion 58 at one end portion and a joint portion 61 at the other end portion. In the use state of the suction port body 35, one end portion of the pipe portion 38 is the tip end side, and the other end portion is a base side fluidly connected to the electric blower 8. That is, the rotation center line C formed by the bearing portion 58 is at the distal end portion of the tube portion 38.

  The bearing portion 58 may support the suction body 37 so as to be smoothly rotatable in a range of 360 °, and has a plurality of concaves and convexes (not shown) that fit into the sleeve 49 and the opening 57 at appropriate angles. The angle may be switchable in stages.

  Each of the joints 39 and 41 can swing (bendable) about an axis that is not parallel to the rotation center line C of the suction body 37. Here, the axis that is not parallel to the rotation center line C is an axis that intersects or twists with respect to the rotation center line C. Each of the joints 39 and 41 according to the present embodiment swings about an axis directed in the width direction of the suction body 37 so as to facilitate entry into a narrow gap.

  Further, each of the joints 39 and 41 is a part of the flow path of the pipe portion 38, and air can be circulated in either a straight pipe state that extends straight or a bent pipe state that is bent. Specifically, each of the joints 39 and 41 includes two large and small cylinders that fit in a mutually rotatable manner with almost no gap. The side walls of these two cylinders are appropriately cut out to keep the flow paths in the joints 39 and 41 circulated within the movable range.

  Note that only one of the joints 39 and 41, that is, at least one of the joints 39 and 41 suffices. If either of the joints 39 and 41 is present, the convenience of the suction port body 35 below or above the eye level of the user can be improved.

  The joint 39, which is one of the joints 39, 41, is located in the surplus portion 56 of the pipe part 38, and the direction in which the suction body 37 is located on the inferior angle side formed by the pipe part 38 (solid arrow A in FIG. 2). Bend in the direction).

  Here, the inferior angle side formed by the tube portion 38 is the smaller one of the angles formed by the center line between one side and the other side of the tube portion 38 across the joint 39. The joint 39 bends within a range of about 60 degrees.

  The joint 41, which is another one of the joints 39 and 41, is in a storage state in which the suction body 37 is adjacent to the pipe portion 38, and is located in the parallel portion 55 of the suction body 37 and the pipe portion 38. Is bent in a direction (a solid arrow B direction in FIG. 2) located on the dominant angle side formed by the pipe portion 38.

  Here, the dominant angle side formed by the tube portion 38 is the larger angle of the angles formed by the center line between one side and the other side of the tube portion 38 across the joint 41.

  Further, the joint 41 is substantially at the center of the parallel portion 55, and is aligned with the bearing portion 58 that becomes the rotation center line C when the suction body 37 is viewed in the longitudinal direction.

  The restricting mechanism 62 restricts the suction body 37 from moving in the rotation direction intersecting the rotation center line C in the accommodated state where the suction body 37 is adjacent to the pipe portion 38. The restriction mechanism 62 includes a first hook 65 on the suction body 37 side and a second hook 66 on the tube portion 38 side on which the first hook 65 can be hooked. The first hook 65 and the second hook 66 are caught in a storage state in which the suction body 37 is adjacent to the pipe portion 38. On the other hand, when the suction body 37 is rotated around the rotation center line C, the first hook 65 and the second hook 66 can be smoothly released.

  The suction port body 35 according to the present embodiment expands the cleaning range with a rotation radius substantially equal to the entire length of the suction body 37 in the longitudinal direction when the longitudinal suction body 37 is rotated.

  FIG. 4 is a view showing one positioning mechanism of the suction port body according to the embodiment of the present invention. In FIG. 4, the cover that covers the positioning mechanism 42 is removed.

  As shown in FIG. 4, the joint 39 of the suction port body 35 according to this embodiment includes a positioning mechanism 42 that positions the joint 39 at a plurality of locations for each appropriate rotation angle.

  The positioning mechanism 42 includes a pin 68 capable of reciprocating in the direction orthogonal to the joint axis in the side wall of the joint 39, a plurality of notches 69 capable of fitting the pins 68, and a coil spring 71 pressing the pins 68 in the direction of fitting into the notches 69. And comprising. The pin 68 and the coil spring 71 are on one side of the cylinder constituting the joint 39, and the notch 69 is on the other side of the cylinder constituting the joint. When the force applied to the joint 39 exceeds an appropriate magnitude and overcomes the coil spring 71, the positioning mechanism 42 overcomes the notch 69 and holds the angle of the joint 39 at an appropriate bending angle. When the user bends the joint 39, the user can obtain a click feeling and bend the tube portion 38 to a desired angle each time the pin 68 fits into the notch 69 at every appropriate angle.

  FIG. 5 is a view showing the other positioning mechanism of the suction port body according to the embodiment of the present invention.

  As shown in FIG. 5 in addition to FIG. 2, the joint 41 of the suction port body 35 according to this embodiment includes a positioning mechanism 43 that positions the joint 41 at a plurality of locations for each appropriate rotation angle.

  The positioning mechanism 43 has a hemispherical body 72 provided on one side of the tube portion 38 with the joint 41 interposed therebetween, and an arcuate guide hole 73 that is located in at least one other positioning portion 43b and can be fitted and removed from the hemispherical body 72. A plate portion 75. The plate part 75 is located at at least one positioning location 43a and also has a circular hole 76 into which the hemisphere 72 can be fitted and removed. The positioning mechanism 43 has little play at at least one positioning location, specifically, at the positioning location 43a where the pipe portion 38 and the suction body 37 are closest to each other within the swing range of the joint 41, and at least one other positioning location. In 43b, the play is large in a range smaller than the appropriate rotation angle φ.

  The guide hole 73 may be an opening having a larger diameter than that of the hemispherical body 72 and may be circular. On the other hand, it is preferable that the hole 76 is an opening having substantially the same diameter as that of the hemisphere 72, and the play with the hemisphere 72 is small.

  The positioning portion 43a positions and holds the tube portion 38 in a straight tube shape. The positioning portion 43b positions and holds the tube portion 38 in a refractive tube.

  When the user bends the joint 41, every time the hemisphere 72 fits into the hole 76 or the guide hole 73 at an appropriate angle, the user can obtain a click feeling and bend the tube portion 38 to a desired angle.

  By the way, there are a plurality of joints 39, 41 of the suction port body 35, one joint 39 bends in a direction where the suction body 37 is positioned on the inferior angle side of the angle formed by the pipe portion 38, and the other joint 41 has the suction body 37. It bends in a direction located on the dominant angle side of the angle formed by the tube portion 38. One positioning mechanism 42 on one joint 39 side has a larger holding force in the positioning state than the other positioning mechanism 43 on the other joint 41 side. The difference in holding force between the positioning mechanisms 42 and 43 is obtained by appropriately combining the spring constant of the coil spring 71 of the positioning mechanism 42 and the rigidity of the plate portion 75 of the positioning mechanism 43, the protruding length of the pin 68 of the positioning mechanism 42, and the positioning mechanism. The size of the 42 hemispheres 72 is appropriately combined and adjusted.

  FIG. 6 is a cross-sectional view showing a restriction mechanism for the suction port body according to the embodiment of the present invention.

  As shown in FIG. 6, the restriction mechanism 62 of the suction port body 35 according to the present embodiment, that is, the first hook 65 and the second hook 66 are provided with uneven portions 67 that fit into each other. The unevenness 67 extends in the radial direction of the rotation center line C and the rotation of the suction body 37 around the rotation center line C is regulated by fitting the unevenness 67, and the suction body 37 is unexpectedly rotated to the deployed state. To prevent that.

  FIG. 7 is a perspective view showing a part of the vacuum cleaner according to the embodiment of the present invention.

  FIG. 8 is a side view showing a part of the vacuum cleaner according to the embodiment of the present invention.

  As shown in FIGS. 7 and 8, the vacuum cleaner 1 according to this embodiment includes a flexible dust collecting hose 21 (first) that fluidly connects the electric blower 8 and the hand control pipe 22 (relay pipe). A dust collecting hose), and a second dust collecting hose 85 that fluidly connects the hand operating tube 22 and the suction port body 35 and bends more flexibly than the dust collecting hose 21.

  Further, the vacuum cleaner 1 includes a telescopic tube 86 having a telescopic structure that can be telescopically connected to fluidly connect the second dust collecting hose 85 and the suction port body 35.

  The second dust collecting hose 85 is easily extended from the natural length as compared with the dust collecting hose 21 and is easily contracted from the extended state. In other words, the second dust collecting hose 85 has a spring-like property lower than that of the dust collecting hose 21 and has a property like a tension spring in which the natural length is a state in which the second dust collecting hose 85 is fully contracted by the contracting force. The second dust collecting hose 85 includes a joint pipe 87 that can be fitted to and detached from the hand operation pipe 22 at one end, and a joint pipe 88 that can fit and remove the telescopic pipe 86 at the other end. The joint pipe 88 includes a lock mechanism 89 that fixes and releases the telescopic pipe 86 fitted therein.

  Further, the second dust collecting hose 85 is on the upstream side of the air flow sucked by the electric blower 8 compared to the dust collecting hose 21.

  In the form (FIG. 1) in which the extension pipe 25 and the floor suction port body 26 are connected to the upstream side of the hand operation pipe 22, the electric vacuum cleaner 1 is suitable for the purpose of cleaning the floor surface over a wide range. The vacuum cleaner 1 of this form absorbs the operation of the user reciprocating the hand operating tube 22, the extension tube 25, and the floor suction port body 26 back and forth with the deflection of the entire dust collecting hose 21. Then, when the user pulls the hand control tube 22 to change the cleaning location, the electric vacuum cleaner 1 pulls the vacuum cleaner body 2 with the dust collecting hose 21 that is kept straight while being free from bending. And move to a new cleaning location. That is, when the floor suction port body 26 is used, it is preferable that the dust collecting hose 21 bends easily and bends (low bending rigidity), but it is pulled without impairing the follow-up performance of the cleaner body 2. Therefore, it is preferable that the film does not easily expand and contract (high longitudinal rigidity). Therefore, the dust collection hose 21 is less likely to expand and contract than the second dust collection hose 85, thereby maintaining the followability of the cleaner body 2 and improving the operability.

  On the other hand, in the form in which the vacuum cleaner 1 is connected to the second dust collecting hose 85, the telescopic pipe 86 and the suction port body 35 on the upstream side of the hand operation tube 22, for example, narrow cleaning such as a gap in furniture or under a bed. It is suitable for the purpose of intensively cleaning a spot or a difficult-to-view cleaning spot at a high place such as the upper surface of an indoor unit of an air conditioner such as a so-called air conditioner. In the vacuum cleaner 1 of this form, the user absorbs the movement of the telescopic tube 86 and the suction port body 35 integrally and in any direction by bending of the second dust collecting hose 85 that is more flexible than the dust collecting hose 21. And the vacuum cleaner 1 absorbs a displacement with the 2nd dust collection hose 85 extended easily, although it becomes linear even if a user pulls the expansion-contraction pipe | tube 86 in order to change the direction of a pipe tip (suction inlet 35). And the orientation of the vacuum cleaner body 2 is maintained. That is, when the suction port 35 is used, the second dust collecting hose 85 is preferably easily bent and curved (low bending rigidity), and is easily expanded and contracted (low vertical rigidity). It is preferable that the orientation of the machine body 2 can be maintained. Therefore, the second dust collecting hose 85 is easily bent between the hand operating tube 22 and the suction port body 35 and is easily extended to allow a large displacement between the two parts and to position the vacuum cleaner body 2. Easy to keep and improve operability. In particular, since the second dust collection hose 85 is on the upstream side closer to the tube tip (suction port body 35) than the dust collection hose 21, the user pulls the telescopic tube 86 mainly on the second dust collection hose 85 side. Can be used to absorb. In addition, the second dust collecting hose 85 can flexibly bend and extend following the operation of the user to push the suction port body 35 farther than the dust collecting hose 21, and the second dust collecting hose 85 can be slackened by a force to shrink. It does not get in the way of the user without losing and exhibiting useless length.

  The telescopic tube 86 can be expanded and contracted in multiple stages, for example, three stages. The expansion / contraction tube 86 includes a joint portion 91 that can be fitted to and detached from the joint pipe 88 of the second dust collecting hose 85 at one end, and a joint portion 92 that can fit and remove the suction port 35 at the other end. The telescopic tube 86 includes a lock mechanism 93 that fixes and releases the stretched or shortened state at each stage.

  The vacuum cleaner 1 can be used for cleaning not only the suction port body 35 but also the telescopic tube 86 and the upstream opening end of the second dust collecting hose 85 as a tube tip.

  9 to 11 are diagrams illustrating an example of a usage state of the suction port body according to the embodiment of the present invention.

  As shown in FIG. 9, the vacuum cleaner 1 according to the present embodiment connects the second dust collecting hose 85, the telescopic tube 86 and the suction port body 35 to the hand operation tube 22 in order, so that the floor suction port The body 26 can clean a portion that is difficult to clean, for example, a high place.

  The user of the electric vacuum cleaner 1 holds the root of the telescopic tube 86 (the end close to the second dust collecting hose 85), and lifts the suction port 35 upward to clean the high place. As a specific example of the cleaning location at a high place, when considering the upper surface of the indoor unit ie of the air conditioner, by setting the maximum extension length of the expansion tube 86 to about 1 m, the average height of a woman (assuming about 158 cm) Even if the user is as short as several centimeters to tens of centimeters, the suction port 35 can reach the location.

  In addition, the height of the top surface of the indoor unit ie of the air conditioner was set such that the indoor unit having a height of about 25 cm to about 30 cm was separated by a slight distance (about 10 cm) above the sweeping window having a height of about 2 m. The case is assumed to be about 2 m35 cm to about 2 m40 cm.

  As shown in FIG. 10, the suction port body 35 according to the embodiment of the present invention has a bow-like shape in which the suction body 37 is positioned on the inferior angle side formed by the pipe portion 38 by bending a joint 39. The bow-shaped suction inlet 35 is, for example, for cleaning a cleaning place that is higher than the viewpoint of the user of the electric vacuum cleaner 1 and difficult to see directly, such as the upper surface of an indoor unit of an air conditioner. Is suitable. The user of the electric vacuum cleaner 1 can easily make the suction port 35 reach the cleaning location by extending the telescopic tube 86 from an appropriate position separated in the horizontal direction with respect to the cleaning location.

  Further, as shown in FIG. 11, the suction port body 35 according to the present embodiment has an arm length that extends from the joint 39 by rotating the suction body 37 around the rotation center line C in a deployed state in addition to the bow shape. Can stretch. The suction port body 35 in the bow form + deployed form can reach the deeper side of the cleaning place where direct visual observation is difficult. For example, by setting the length in the longitudinal direction of the suction body 37 to about 17 cm, it is possible to secure the arm length in the deployed state with reference to the joint 39 as 30 cm or more. The upper surface of the machine can be cleaned up to the wall (two-dot chain line suction body 37 in FIG. 9).

  As described above, the suction port body 35 according to the present embodiment moves linearly (one-dimensionally) along the edge of the cleaning portion at a high place by the joint 39 that bends the tube portion 38 and cleans the vicinity of the edge portion. Not only is it possible, but by expanding the suction body 37, the cleaning range can be expanded two-dimensionally by reaching the far side from the edge.

  12 and 13 are diagrams illustrating an example of a usage state of the suction port body according to the embodiment of the present invention.

  As shown in FIG. 12, the suction port body 35 according to the present embodiment is configured such that the suction body 37 is bent and bent back by bending a joint 41. The suction port body 35 having a curved shape is suitable for cleaning a narrow cleaning place where the floor suction port body 26 is difficult to enter, such as a gap in furniture. The user of the electric vacuum cleaner 1 can easily make the suction port 35 reach the cleaning location by extending the telescopic tube 86 from an appropriate position separated in the horizontal direction with respect to the cleaning location.

  The suction port body 35 in the warped form has a joint 41 in the parallel portion 55 of the suction body 37 and the pipe portion 38, and easily transmits the force F pressing the suction port body 35 to the surface to be cleaned to the entire suction body 37. You can clean the surface to be cleaned.

  By the way, in the conventional suction port body, since the positioning of bending of the connecting pipe is fixed, the suction body (or the brush tip) is cleaned when the height of the gripping position changes with the swing of the user's arm. It leaves the surface or the grounding condition becomes unstable. On the other hand, in the suction port body 36 according to the present embodiment, since the play of the at least one positioning portion 43b is large in the positioning mechanism 43 of the joint 41, a change in the height of the gripping position occurs due to the user's arm swing. In addition, the suction body 37 can be swung with respect to the telescopic tube 86 and the tube portion 38, and it is easy to maintain the grounding, and the dust on the surface to be cleaned is more reliably swept away.

  Further, as shown in FIG. 13, the suction port body 35 according to the present embodiment has an arm length extending from the joint 39 by rotating the suction body 37 around the rotation center line C in the expanded state in addition to the warping form. Can stretch. The suction opening 35 in the warped form + deployed form can reach the deeper side of the narrow cleaning portion. In addition, the suction port body 35 in the warped form + deployed form can be cleaned by allowing the suction body 37 to enter a narrow space vertically below the TV stand.

  FIG. 14 is a diagram illustrating an example of a usage state of the vacuum cleaner according to the embodiment of the present invention.

  As shown in FIG. 14, the suction port body 35 according to the present embodiment easily folds the suction port body 35 in a narrow gap having a restriction in the height direction by appropriately bending both the joints 39 and 41. Can be reached. For example, it is suitable for cleaning narrow and narrow cleaning places such as gaps between storage boxes stored under the bed B. The user of the electric vacuum cleaner 1 can easily make the suction port 35 reach the cleaning location by extending the telescopic tube 86 from an appropriate position separated in the horizontal direction with respect to the cleaning location.

  The vacuum cleaner 1 according to the present embodiment includes the second dust collection hose 85 that bends and curves more flexibly than the dust collection hose 21, so that the suction port body 35, the telescopic pipe 86 and the second dust collection hose 85 are provided. When cleaning at the open end on the upstream side, it is easy to handle these tube tips and enhance operability. Moreover, when the vacuum cleaner 1 removes the second dust collection hose 85 and connects the extension pipe 25 or the floor suction port body 26 to the dust collection hose 21, the vacuum cleaner 1 has the property of the second dust collection hose 85. Regardless, the followability of the vacuum cleaner body 2 can be adjusted by the nature of the dust collecting hose 21.

  Moreover, the vacuum cleaner 1 according to the present embodiment includes the second dust collecting hose 85 that is easy to extend from the natural length as compared with the dust collecting hose 21, thereby reducing the followability of the cleaner body 2 and performing localization. It is easy to maintain, and it is easy to direct the tube tip in an appropriate direction without worrying about the follow-up of the cleaner body 2. Thereby, the vacuum cleaner 1 reduces the risk of pulling the cleaner body 2 and colliding with furniture or the like because the user is distracted by a narrow cleaning place or a high cleaning place.

  Furthermore, the vacuum cleaner 1 according to the present embodiment includes the telescopic tube 86, so that the user can easily change the orientation of the portion gripped by the user, and the root portion of the telescopic tube 86, and further away from the portion gripped by the user. It is easy to make the suction port body 35 and the tip of the telescopic tube 86 reach the cleaning location.

  Therefore, according to the vacuum cleaner 1 which concerns on this embodiment, usability can be improved by changing the elasticity of the dust collection hoses 21 and 85 according to a use condition.

  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 Grasp part 24 Operation part 24a Stop switch 24b Start switch 25 Extension pipe 26 Floor suction port body 28 Suction port 29 Rotary cleaning body 31 Electric motor 35 Suction port body 36 Suction port 37 Suction body 38 Pipe portions 39, 41 Joint 42, 43 Positioning mechanism 43a, 43b Positioning location 45 Base 46 Brush 48 Suction chamber 49 Sleeve 51 Opening 52 Claw 55 Parallel part 56 Surplus part 57 Opening 58 Bearing part 61 Joint part 62 Restriction mechanism 65 First hook 66 Second hook 67 Concavity and convexity 68 Pin 69 Notch 71 Coil spring 72 Hemisphere 73 Guide hole 75 Plate portion 76 Hole 77 Center brush 8 side brush 78a bristles 79 Center brush 79a hair 85 second collecting dust hose 86 expansion pipe 87, 88 joint pipe 89,93 lock mechanism 91, 92 joints

Claims (3)

A flexible first dust collecting hose that fluidly connects the electric blower and the relay pipe;
A second dust collecting hose that fluidly connects the relay pipe and the suction port and bends more flexibly than the first dust collecting hose;
A gripping portion provided in the relay pipe;
A vacuum cleaner comprising: a pipe for fluidly connecting the second dust collecting hose and the suction port body . The vacuum cleaner according to claim 1, wherein the second dust collecting hose is easily extended from a natural length as compared with the first dust collecting hose. The tube cleaner as claimed in claim 1 or 2 which is telescopic tube telescopic telescopic structure.

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