JP2006346337A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner having various suction ports of different widths for selectable use in accordance with the situation of a place to be cleaned, and requiring reduced efforts in cleaning work. <P>SOLUTION: A vacuum cleaner body 3 having a joint part 12 communicating with the downstream side of a suction body 2 is detachably provided with a suction unit 4 having a relay pipe 31, a support pipe 32 and a suction port body 33 having a size different from that of the suction port body 2 and attached to the pipe 32, and a dust collection pipe 5. The pipe 31 has an engaging part and a fitting part 31a detachably attached to the joint part, and the fitting part has a first and a second ports 36, 37. A switching member 38 for opening the port 36 and closing the port 37 in the fitted state and for opening the port 37 and closing the port 36 in the unfitted state is provided in the fitting part. The support pipe 32 attached to the relay pipe can be moved between the communicating position and non-communicating position with the port 37. The pipe 5 communicating with suction part of the main body 3 through the hose 6 are detachably fitted with the relay pipe. A locking device 52 is arranged in the pipe 5 so that a locking member of the device is engaged with and disengaged from the engaging parts according to the movement of the support pipe 32. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner suitable as, for example, an upright type vacuum cleaner.

  Conventionally, a vacuum cleaner body with a built-in electric blower has a carrying handle protruding upward, and a floor suction port is connected to the lower side of the vacuum cleaner body, extending to the exhaust port of the floor suction port body One end of the tube is detachably connected, and one end of the flexible dust suction hose is connected to the suction side of the electric blower and connected to the cleaner body, and a hose joint is connected to the tip of this hose. There is known an electric vacuum cleaner in which an end portion of a hose joint with protruding bristle is detachably connected to the other end portion of an extension pipe (see, for example, Patent Document 1).

This vacuum cleaner is basically used as an upright type, but by removing the extension tube from the exhaust port of the floor suction port body, dust can be absorbed using the opening at the tip of the extension tube as a suction port. In addition, by removing the hose joint from the extension pipe while the extension pipe is connected to the exhaust port of the floor suction port body, dust can be sucked by using the opening in which the brush of the joint protrudes as the suction mouth.
JP 2001-78928 A (paragraphs 0011-0022, FIGS. 1-9)

  When the floor surface is cleaned with the electric vacuum cleaner of Patent Document 1, the entire cleaner is moved by holding the handle. In this case, since the main body of the vacuum cleaner and the floor suction port are moved, the cleaning operation must be heavy, and the improvement thereof is demanded.

  And the width | variety of the suction inlet of a floor suction inlet body is usually larger than the width | variety of a vacuum cleaner main body, and the place narrower than the width | variety cannot be cleaned.

  By the way, when the tip of the extension pipe or the hose joint is used as a suction port, the suction port is small, so that only spot-like dust suction can be performed.

  Moreover, in the vacuum cleaner of patent document 1, the usage form like the canister type vacuum cleaner which is a cleaning form other than the above two types of cleaning forms cannot be obtained.

  An object of the present invention is to provide a vacuum cleaner that can be used by selecting various types of suction ports having different widths according to a cleaning place, and can be used in a light cleaning operation.

  In order to solve the above-mentioned problems, the present invention provides a vacuum cleaner main body having a joint communicating with the downstream side of the first suction port body, a size different from that of the relay pipe, the support pipe, and the first suction port body. A suction unit provided with a second suction port that is formed on the support pipe and attached to the support pipe, and a dust suction pipe that is connected to the suction side of the electric blower in the vacuum cleaner body via a dust suction hose. A locking device is provided that can be freely provided and bears the connection between the relay pipe and the dust suction pipe. The relay pipe has a first inlet and a second inlet, and a detachable fitting part is provided in the joint part. The support pipe is attached to the relay pipe so as to be movable between a communication position communicating with the second inlet and a non-communication position deviating from the second inlet. The suction unit is opened in a state where the fitting portion is fitted to the joint portion, the first inlet is opened, the second inlet is closed, and the fitting portion is removed from the joint portion. The two inlets are opened and the first inlet is closed. The locking device locks the dust suction pipe and the relay pipe so that they cannot be separated when the support pipe is arranged at the communication position, and separates the dust suction pipe from the relay pipe when the support pipe is arranged at the non-communication position. The lock is released so that it can be used.

  According to the present invention, it is possible to select a case where dust is sucked from the first suction port body, a case where dust is sucked from the second suction port body, and a case where dust is sucked from the tip opening of the dust suction pipe, so that the widths are different. It can be cleaned by using various types of suction ports according to the cleaning location, and when sucking dust from the second suction port body or when sucking dust from the tip opening of the dust suction pipe, remove the vacuum cleaner main body and the first suction port body. In many cases, there is no need to move it. In this case, a vacuum cleaner that can be cleaned with a light cleaning operation can be provided.

  An embodiment of the present invention will be described with reference to FIGS.

  The upright type (vertical) vacuum cleaner denoted by reference numeral 1 in FIGS. 1 to 3 includes a first suction port body 2, a vacuum cleaner body 3, a suction unit 4, and dust absorption used as an extension pipe. A pipe 5 and a dust suction hose 6 are provided.

  The first suction port body 2 has, for example, a T-shape in plan view so as to be suitable for cleaning the floor surface. The front portion of the first suction port body 2 extends in the width direction, and a suction port (not shown) extending in the longitudinal direction (width direction) is opened on the lower surface thereof. A rotary cleaning body (not shown) that partially protrudes downward from the suction port is built in the front portion of the first suction port body 2. The rotary cleaning body is rotated by the power of the electric motor built in the first suction port body 2 or the air sucked into the first suction port body 2.

  The rear portion of the first suction port body 2 is provided so as to protrude rearward from the front central portion. A rotatable wheel 8 is attached to the rear part. A connecting pipe 9 is attached to the rear portion via a universal joint structure (not shown). The connecting pipe 9 can be rotated in the front-rear direction so as to be tilted over a position where it stands up and a position where it tilts substantially horizontally by the universal joint structure, and can also be rotated in the left-right direction.

  The vacuum cleaner main body 3 includes a main body case 11 formed longer in the vertical direction than the width dimension in the horizontal direction. The body case 11 is preferably provided with a joint portion 12 located at the lower part of the rear surface. The joint part 12 protrudes rearward, and has a lower joint pipe part 13 and a pipe receiving part 14 continuous on the upper side as shown in FIG. The connecting pipe 9 is inserted and fixed to the lower joint pipe part 13 from below.

  The upper end of the tube receiving part 14 is open to the upper end surface of the joint part 12. As shown in FIG. 3, a seal ring 15 made of an elastomer, synthetic rubber or the like is disposed at the bottom of the tube receiving portion 14. Furthermore, a protruding convex portion 16 is provided on the inner side of the tube receiving portion 14 so as to protrude downstream of the joint portion 12, specifically upward. The upper part of the protruding protrusion 16 protrudes upward from the seal ring 15.

  By connecting the connecting pipe 9 to the joint portion 12, the cleaner body 3 is supported above the first suction port body 2 so as to be rotatable along the front-rear direction. The vacuum cleaner main body 3 is held in a self-supporting state substantially directly above the first suction port body 2 when the connecting pipe 9 is disposed at the standing position shown in FIGS. 1 to 3.

  As shown in FIGS. 1 and 2, a hose connection port 17 is formed on the upper rear surface of the main body case 11. Further, a portable main body handle 18 is provided on the upper surface of the main body case 11. A holding mechanism 19 (see FIG. 3) is provided at the upper end portion of the main body case 11, and a release button 19 a of the holding mechanism 19 projects from the upper surface of the main body case 11. The release button 19a is pushed in when releasing the holding of the dust suction pipe 5.

  As shown in FIG. 3, an electric blower 21 is built in the lower part of the main body case 11. The electric blower 21 is supplied with power through a power cord provided in a cord reel 22 built in the main body case 11.

  A dust case 23 is attached to the main body case 11 from the front surface. The dust case 23 is disposed on the suction side of the electric blower 21. Further, the hose connection port 17 communicates with the suction side of the dust case 23. The dust case 23 performs cyclone-type dust separation by swirling dust-containing air that is introduced from the hose connection port 17 and circulates toward the electric blower 21 therein. The air flowing out from the dust case 23 due to the dust separation is sucked into the electric blower 21, and the air discharged from the electric blower 21 is discharged from the exhaust part 24 (see FIGS. 1 and 2) provided in the main body case 11. 11 is discharged outside.

  As shown in FIGS. 4 and 5, the suction unit 4 includes a relay pipe 31, a support pipe 32, and a second suction port body 33.

  The relay pipe 31 has a straight tube shape, has a fitting portion 31a at one end thereof, and a locking portion 35 at the other end. The other end surface of the relay pipe 31 in which the locking part 35 is provided in the vicinity is opened. The locking portion 35 is formed of a hole opened on the side surface of the other end portion of the relay pipe 31, for example. Note that the locking portion 35 may be formed by a groove that opens to the outer surface of the other end of the relay pipe 31 instead of the hole.

  The fitting portion 31 a is detachably fitted into the tube receiving portion 14 of the joint portion 12 with the tip thereof being in contact with the seal ring 15. The suction unit 4 is supported by the lower part of the rear surface of the cleaner body 3 by this fitting. In this fitted state, the outer peripheral surface of the fitting portion 31a and the inner peripheral surface of the tube receiving portion 14 are in contact with each other, and the user applies an upward tensile force of a predetermined value or more by friction caused by this contact. As long as it is not added to the above, the relay pipe 31 is prevented from being detached from the pipe receiving part 14 of the joint part 12.

  The fitting portion 31 a has a first inlet 36 and a second inlet 37. The first inlet 36 is formed so as to open at one end face of the relay pipe 31, and the protruding convex part 16 is formed at the peripheral side position when the fitting part 31 a is fitted to the pipe receiving part 14. It is designed to be inserted upward. The second inlet 37 is formed to open on the side surface of the fitting portion 31a.

  The relay pipe 31 has a switching member 38. The switching member 38 opens the first inlet 36 and closes the second inlet 37 in a state where the fitting portion 31 a is fitted to the joint portion 12, and the fitting portion 31 a is removed from the joint portion 12. In this state, it is provided to open the second inlet 37 and close the first inlet 36. In this embodiment, the second inlet 37 is formed of a valve plate and is rotatably mounted inside the fitting portion 31a. The switching member 38 made of the valve plate is biased in a direction to close the first inlet 36 by a biasing member such as a spring, preferably a torsion spring 39.

  Thereby, as the fitting portion 31 a is fitted to the tube receiving portion 14, the switching member 38 that closes the first inlet 36 is pushed by the push-up convex portion 16 against the torsion spring 39. The first inlet 36 is opened and the second inlet 37 is closed. On the contrary, when the fitting part 31a is removed from the tube receiving part 14 and the pushing-up action of the switching member 38 by the pushing-up convex part 16 disappears, the spring force of the torsion spring 39 is accompanied by the second force until then. The switching member 38 that has closed the inlet 37 is rotated to the position where the first inlet 36 is closed.

  A pivotal support 40 is provided on the outer surface of the relay pipe 31 so as to approach the second inlet 37. The pivot 40 protrudes at a right angle with respect to the relay pipe 31.

  The support pipe 32 is movably attached to the relay pipe 31 and has, for example, an L-shaped tube portion 41 and a connecting portion 42 formed integrally with the outside of the L-shaped tube portion 41. ing.

  The L-shaped tube portion 41 has an opening 41a at one end thereof. The other end portion of the L-shaped tube portion 41 forms a joint tube portion 41b.

  The connecting portion 42 is formed side by side at one end of the L-shaped tube portion 41 having an opening 41a. The connecting portion 42 and the L-shaped tube portion 41 are partitioned by a common partition and do not communicate with each other. The connecting portion 42 is rotatably connected to the pivotal support portion 40. This rotation is restricted to 180 degrees by restriction means (not shown).

  Therefore, the support pipe 32 is connected to the relay pipe 31 so that the support pipe 32 can be moved with the pivotal support 40 as a fulcrum, that is, can be reciprocated within a range of 180 degrees. By this connection, the joint pipe portion 41 b is arranged in parallel with the relay pipe 31.

  The support tube 32 is disposed at the communication position and the non-communication position by the rotation of 180 degrees. The communication position refers to the arrangement of the support pipe 32 when the support pipe 32 is moved so that the opening 41a communicates with the second inlet 37, and is shown in FIG. The non-communication position refers to the arrangement of the support pipe 32 when the support pipe 32 is moved so that the opening 41a is removed from the second inlet 37, and is shown in FIG.

  Although not shown, an airflow suppressing member such as flocking may be provided on the end face of the opening 41a or the second inlet 37. Thereby, in the state where the support pipe 32 was moved to the communication position by the rotation operation by the user, it is possible to suppress the outside air from being sucked in between the opening 41 a and the second inlet 37.

  The second suction port body 33 includes a suction port main body 45 and a joint pipe 46 attached to the central portion in the longitudinal direction (width direction). The joint pipe 46 is rotatably connected to the inside of the joint pipe portion 41 b of the support pipe 32. The joint pipe 46 and the suction port main body 45 are rotatably connected via a pivoting means 47 orthogonal to the axis of the joint pipe 46.

  Therefore, the second suction port 33 is rotatable around the axis of the pivotal support portion 40 and the joint pipe portion 41b, and is orthogonal to the axis of the pivot attachment means 47, in other words, the axis of the joint pipe portion 41b. The suction port main body 45 is provided so as to be rotatable about an axis extending in the width direction (longitudinal direction). By being able to rotate about two axes orthogonal to each other in this way, a variety of postures that the second suction port body 33 can take when cleaning using the second suction port body 33 is obtained. Can do.

  The second suction port body 33 is formed to have a size different from that of the first suction port body 2, preferably smaller than the first suction port body 2. Therefore, the width dimension of the suction port body 45 is smaller than the width dimension of the first suction port body 2. 1, 3, and 4, reference numeral 45 a indicates a suction port formed in the suction port main body 45 so as to extend in the width direction. The suction port 45 a communicates with the L-shaped tube portion 41 through the joint tube 46. Further, the second suction port body 33 does not incorporate a rotary cleaning body and an electric motor for driving the second cleaning port body 33 and is made much lighter than the first suction port body 2.

  The joint pipe part 41b of the L-shaped pipe part 41 has a stopper part 41c. A bottom wall 45b of the suction inlet main body 45 in which the suction inlet 45a is opened can be brought into and out of contact with the stopper portion 41c. Then, when the bottom wall 45b hits the stopper portion 41c, the suction port body 45 is prevented from rotating around the pivot means 47 in the direction of the arrow in FIGS. .

  As shown in FIGS. 4 and 5, a pressing portion 48 is integrally provided on the outer surface of the suction port body 45 of the second suction port body 33. In addition, you may provide the press part 48 in the outer surface of the joint pipe part 41b which the L-shaped pipe part 41 of the support pipe 32 had.

  As shown in FIGS. 1 to 3, the dust suction pipe 5 includes a pipe element 51, a fitting member 53 to which a lock device 52 is attached, a gripping member 54, and a locking member 55.

  The pipe element 51 has a straight tubular shape. The fitting member 53 is attached to the outer periphery of one end portion of the pipe element 51 and constitutes one end portion (tip portion) of the dust suction pipe 5. The large-diameter inner peripheral portion of the fitting member 53 can be detachably fitted to the outer periphery of the other end portion of the relay pipe 31. The depth of fitting is set to a depth at which the locking portion 35 is included in the fitting region.

  As shown in FIGS. 4 and 5, the lock device 52 includes a lock member 52b that performs a seesaw motion with a pivot 52a as a fulcrum, and a spring 52c that biases the lock member 52b. The lock member 52b has a locking projection 52b1 that is engaged with and disengaged from the locking portion 35 at one end, and a pressing operation portion 52b2 at the other end. The pressing operation part 52b2 has a push button shape, and protrudes to the outside of the fitting member 53 so that the pressing operation with the user's finger or the pressing part 48 of the second suction port body 33 is possible.

  As the fitting member 53 is fitted to the relay pipe 31, the locking projection 52b1 of the locking member 52b is engaged with the locking portion 35 by the force of the spring 52c. By this engagement, the relay pipe 31 is connected to the tip of the dust suction pipe 5. In the connected state, when the pressing operation portion 52b2 is pressed and the lock member 52b is rotated against the spring 52c, the locking projection 52b1 is disengaged from the locking portion 35. The dust-absorbing pipe 5 can be pulled off.

  The fitting member 53 is attached with a cleaning member, for example, a brush bristle 53a, which protrudes from the front end surface. A brushed cloth or the like can be used as the cleaning member, and the cleaning member may be omitted.

  The grip member 54 is attached to the outer periphery of the other end of the pipe element 51. The gripping member 54 is used by gripping the first suction port body 2 and the vacuum cleaner body 3 back and forth along the floor surface when the electric vacuum cleaner 1 is used. The other end opening of the pipe element 51 is not blocked by the grip member 54.

  The locking member 55 is attached to the outer periphery of the pipe element 51 close to the gripping member 54, and is engaged / disengaged with the holding mechanism 19. By holding the locking member 55 in the holding mechanism 19, the dust suction pipe 5 is attached along the rear surface of the cleaner body 3 as shown in FIGS. 1 to 3, and the release button 19 a is pushed down to hold the holding mechanism. By releasing the holding of the locking member 55 by 19, it is possible to remove the dust suction pipe 5 from the relay pipe 31 upward.

  As shown in FIGS. 1 to 3, the dust suction hose 6 is composed of a flexible hose, for example, a bellows-like hose. One end of the dust suction hose 6 is connected to the hose connection port 17 of the cleaner body 3. The other end of the dust suction hose 6 is connected to the other end opening of the pipe element 51.

  When the electric vacuum blower 1 shown in FIGS. 1 to 3 is driven by the electric blower 21 to clean the floor surface such as the carpet surface in the first cleaning form as a normal upright type vacuum cleaner, The vacuum cleaner 1 is moved using the dust suction pipe 5 attached to the cleaner body 3. That is, the gripping member 54 protruding above the main body case 11 is gripped, and the cleaner body 3 is tilted rearward (indicated by an arrow A in FIG. 3), and the floor suction port on the lower side thereof, That is, the first suction port body 2 is used while being moved along the floor surface in the front-rear direction for each cleaner body 3.

  In this case, since the fitting portion 31a of the relay pipe 31 of the suction unit 4 is fitted in the joint portion 12, switching is performed by the push-up convex portion 16 inserted into the first inlet 36 as shown in FIG. The member 38 is pushed and moved so that the first inlet 36 is opened and the second inlet 37 is closed by the switching member 38.

  Further, in this state, as shown in FIG. 4 and the like, the L-shaped tube portion 41 of the second suction port body 33 is disposed at a non-communication position away from the second inlet 37, and the suction port The second suction port 33 of the unit 4 is arranged in an upward posture. Thereby, the pressing operation portion 52b2 of the locking device 52 is pushed by the pressing portion 48 of the suction port main body 45, and the locking projection 52b1 of the locking member 52b comes out of the locking portion 35 of the relay pipe 31. Yes. That is, the connection state of the dust suction pipe 5 to the relay pipe 31 by the lock device 52 is released.

  However, since the upper part of the dust suction pipe 5 is held by the cleaner main body 3 by the holding mechanism 19, the vacuum cleaner main body of the dust suction pipe 5 connected to the relay pipe 31 unless the release mechanism 19 is released by pressing the release button 19a. 3 is maintained. Therefore, the dust suction pipe 5 does not come off from the cleaner body 3 even though the pushing force and the pulling force act on the dust suction pipe 5 during cleaning in the first cleaning mode.

  In addition, in the state where the second suction port body 33 is disposed upward as described above, the suction port body 45 is not parallel to the dust suction pipe 5 connected to the relay pipe 31 and is not connected to the stopper portion 41c. Due to the contact with the bottom wall 45b, it is held in a state of being slightly tilted in the direction of the arrow in FIG. For this reason, the space between the main body and the dust suction pipe 5 increases toward the upper end of the suction port main body 45 in the upward posture. Thereby, when the dust suction pipe 5 is removed from the relay pipe 31 as will be described later, the suction port body 45 does not get in the way.

  Therefore, in the first cleaning mode as the upright type vacuum cleaner described above, the dust-containing air passing through the joint portion 12 from the first suction port body 2 is connected to the relay pipe 31 of the suction unit 4 and the relay pipe. 31 through a dust-absorbing air passage formed by a dust-absorbing pipe 5 to which a lower end fitting member 53 is connected to 31 and a dust-absorbing hose 6 connected to the dust-absorbing pipe 5, and further from a hose connection port 17 of the cleaner body 3. The electric blower 21 is sucked through the dust case 23.

  Thereby, centrifugal dust separation is performed in the dust case 23, and dust separated from the air sucked into the electric blower 21 is accumulated in the dust case 23. On the other hand, the air that has flowed out of the electric blower 21 passes through the exhaust part 24 of the cleaner body 3 and is discharged to the outside of the cleaner body 3.

  Moreover, the electric vacuum cleaner 1 can stand up as shown in FIGS. By removing the dust suction pipe 5 from the cleaner body 3 and operating the electric blower 21 in this self-standing state, the second cleaning mode can be obtained. In order to obtain the second cleaning form, the release button 19a is pressed to release the holding of the dust suction pipe 5 from the holding mechanism 19 to the cleaner body 3, and the dust suction pipe 5 is pulled upward.

  In this case, as described above, the locking device 52 is pushed by the second suction port body 33 and is held in the unlocked state, so that the user connects the fitting member 53 of the dust suction pipe 5 to the relay pipe. The locking device 52 does not prevent it from being removed from the upper end of 31. Further, the frictional force between the fitting part 31a of the relay pipe 31 and the pipe receiving part 14 with which it is fitted, rather than the frictional force between the fitting member 53 and the relay pipe 31 fitted together. Since this is set larger, the suction unit 4 is not detached from the cleaner body 3 when the dust suction pipe 5 is pulled off.

  The second cleaning form is indicated by a two-dot chain line in FIG. 2 and can directly absorb dust using the fitting member 53 forming the tip of the dust suction pipe 5 as a suction port. In this case, accessories such as a gap nozzle (not shown) can be connected to the fitting member 53, and the accessory can be used to suck dust. Accordingly, it is possible to clean a narrow cleaning place such as a sash groove, and it is possible to spot-clean a cleaning place at a high ceiling side by effectively using the length of the dust suction hose 6.

  After such cleaning, the dust suction pipe 5 is placed upright on the rear surface of the cleaner body 3. In this case, the fitting member 53 of the dust suction pipe 5 is fitted to the upper end portion of the relay pipe 31 from above, and at the same time, the upper portion of the dust suction pipe 5 is held by the holding mechanism 19.

  Further, the vacuum cleaner 1 can be cleaned even in the third usage pattern like a canister type vacuum cleaner indicated by a solid line in FIG.

  In this case, first, the second suction port body 33 of the suction unit 4 is moved from the state shown in FIG. 1, and specifically, the second suction port body 33 is set so that the suction port body 45 faces downward. Rotate 180 degrees with respect to the relay pipe 31. By this rotation operation, the pressing portion 48 is disengaged from the locking device 52, so that the locking member 52b of the locking device 52 is rotated by the force of the spring 52c, and the locking convex portion 52b1 enters the locking portion 35 of the relay pipe 31. Is engaged.

  That is, the relay pipe 31 and the dust suction pipe 5 are connected by the lock device 52. Further, the second suction port body 33 is disposed at a position where the opening 41 a of the L-shaped pipe portion 41 communicates with the second inlet 37 of the relay pipe 31 by the rotation. The above arrangement state is shown in FIG.

  Next, the dust suction pipe 5 is pulled up from the cleaner body 3 in the state where the release button 19a is pushed and the holding of the dust suction pipe 5 by the holding mechanism 19 is released as described above. Thereby, the fitting part 31a of the relay pipe 31 of the suction unit 4 connected via the lock device 52 is pulled off from the pipe receiving part 14 of the joint part 12, so that the dust suction pipe is accompanied by the suction unit 4. 5 is removed from the cleaner body 3.

  Therefore, as shown by a solid line in FIG. 2, the second suction port body 33 along the floor surface can be sucked from the floor surface while being pushed and pulled through the dust suction hose 6. In this case, when it is necessary to move the cleaner main body 3, the main body handle 18 may be grasped with one hand, the cleaner main body 3 may be tilted rearward around the wheel 8, and the cleaner main body 3 may be moved. In this manner, the dust suction hose 6 can be pushed and pulled with the other hand while the vacuum cleaner body 3 is moved to perform cleaning.

  In this third usage pattern, the dust-containing air sucked from the suction port 45a of the second suction port body 33 is introduced into the relay pipe 31 from the second inlet 37 through the L-shaped pipe part 41, Sucked into the dust suction pipe 5. At this time, since the first inlet 36 of the relay pipe 31 is closed by the switching member 38 biased by the spring force of the torsion spring 39, intake through the first inlet 36 is suppressed.

  In the third cleaning mode described above, since the second suction port body 33 used for sucking dust is smaller than the first suction port body 2, a relatively narrow place where the first suction port body 2 is difficult to enter is provided. Can be cleaned.

  As described above, the vacuum cleaner 1 can perform cleaning by selecting one of the first to third cleaning modes. And in the 1st cleaning form, dust can be sucked through the widest suction port, in the second cleaning form, dust can be sucked through the narrowest suction port, and in the third cleaning mode, compared to the suction port in the first cleaning mode. Dust can be sucked through the suction port that is narrow and wider than the suction port in the second cleaning mode.

  In this way, since the suction ports having different widths can be selected and sucked according to the size of the cleaning place or the like, it is easy to use. Furthermore, in the second and third modes of use, basically, there is no need to move the vacuum cleaner body 3 and the first suction port body 2 which are heavy in weight, so that the movement of the suction port according to the cleaning place is light. It can be performed by operation, and this is also excellent in this respect.

  Further, as described above, in order to remove the suction unit 4 and the dust suction pipe 5 from the cleaner body 3, an operation of rotating (moving) the second suction port body 33, and the dust suction pipe 5 as the cleaner body 3. It can be performed by two operations of removing from the operation. For this reason, when obtaining the 3rd cleaning form, since the effort which connects the removed dust suction pipe 5 to the relay pipe 31 of the suction unit 4 is unnecessary, it is convenient.

  In addition, in this case, in order to release the locking device 52, the second suction port body 33 in the upward posture is rotated 180 degrees so as to be in the downward posture, so the direction in which the second suction port body 33 can be used. Can be placed. Thereby, since it can transfer to a 3rd cleaning form immediately without requiring the effort which changes the direction of the 2nd suction inlet 33 removed from the cleaner body 3 after that, it is convenient also in this point.

  Moreover, since the vacuum cleaner of the said structure rotates the switching member 38 against the torsion spring 39 with the protrusion convex part 16 provided in the coupling part 12 as stated above, the fitting part 31a of the relay pipe 31 is rotated. Is fitted to the tube receiving portion 14, the switching member 38 can be moved from the position where the first inlet 36 is closed to the position where the second inlet 37 is closed. On the other hand, by pulling out the relay pipe 31 from the pipe receiving portion 14, the switching member 38 can be moved from the position where the second inlet 37 is closed to the position where the first inlet 36 is closed by the force of the torsion spring 39. . Accordingly, the inlet for sucking dust-containing air into the relay pipe 31 with the simple labor of attaching and detaching the relay pipe 31 of the suction unit 4 of the joint portion 12 without requiring the operation of manually moving the switching member 38. Can be switched easily.

  The present invention is not limited to the one embodiment. For example, the second suction port 33 may be larger than the first suction port 2 for floor. The joint portion 12 can also be provided on one side or the front surface of the cleaner body 3. The dust suction pipe 5 is not a single pipe, but two pipes slidably fitted to each other, and a telescopic dust suction equipped with a pipe lock device that can hold the other pipe with respect to one pipe. Pipes can also be used.

  In the present invention, the switching between the first inlet and the second inlet is not necessarily performed by the “switching member”. For example, the first inlet can be opened and closed by a switching member, and the second inlet can be closed by the joint pipe when the fitting portion is fitted to the joint pipe. Furthermore, the “lock device” does not necessarily need to be in the dust suction pipe, and when the locking portion is provided in the dust suction pipe, the lock device may be provided in the relay pipe.

The perspective view which shows the vacuum cleaner which concerns on one Embodiment of this invention seeing from the rear side. The perspective view which shows the condition which cleans the vacuum cleaner of FIG. 1 using the suction unit. The side view which cuts and shows the vacuum cleaner of FIG. 1 partially. Sectional drawing which shows the suction unit with which the vacuum cleaner of FIG. 1 is provided. Sectional drawing which shows the suction unit with which the vacuum cleaner of FIG. 1 is provided in another state.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Vacuum cleaner, 2 ... 1st suction inlet body, 3 ... Vacuum cleaner main body, 4 ... Suction unit, 5 ... Dust absorption pipe, 6 ... Dust absorption hose, 11 ... Main body case, 12 ... Joint part, 14 ... Tube receiver , 16 ... Push-up convex part, 17 ... Hose connection port, 21 ... Electric blower, 31 ... Relay pipe, 31a ... Fitting part, 32 ... Support pipe, 33 ... Second suction port body, 35 ... Locking part , 36 ... first inlet, 37 ... second inlet, 38 ... switching member, 39 ... torsion spring (biasing member), 40 ... pivot part, 41 ... L-shaped pipe part, 42 ... connecting part, 45a ... Suction port 48 ... Pressing part 52 ... Locking device 52a ... Pivot 52b ... Locking member 52c ... Spring 52b1 ... Locking convex part 52b2 ... Pressing operation part

Claims (3)

A first suction port;
A vacuum cleaner main body having a joint communicating with the downstream side of the first suction port body and having an electric blower for sucking dust-containing air from the first suction port body;
A dust suction pipe connected to the suction side of the electric blower via a dust suction hose and detachably attached to the cleaner body;
The fitting portion has a fitting portion that is detachably fitted from the downstream side, and the fitting portion is provided with a first inlet and a second inlet that opens at a position different from the first inlet. A relay pipe, a support pipe attached to the relay pipe so as to be movable between a communication position communicating with the second inlet and a non-communication position deviating from the second inlet, and the first suction port body And a second suction port body attached to the support tube and having the fitting portion fitted to the joint portion, the first inlet is opened. A suction unit in which the second inlet is closed and the second inlet is opened and the first inlet is closed in a state where the fitting portion is removed from the joint;
When the support pipe is disposed at the communication position, the dust suction pipe and the relay pipe are locked so as not to be separated, and when the support pipe is disposed at the non-communication position, the dust suction pipe is removed from the relay pipe. A locking device that releases the lock into a state where it can be separated;
Vacuum cleaner equipped with.   The support pipe is rotatably attached to the relay pipe, and engages with a locking portion provided at the other end of the relay pipe when the support pipe is arranged at the communication position, and the non-communication position at the non-communication position. A pressing portion that operates the pressing operation portion by moving the supporting tube to and away from the pressing operation portion of the locking device that operates the lock member that is disengaged from the locking portion when the support tube is disposed. The vacuum cleaner according to claim 1, wherein the vacuum cleaner is provided in a pipe or the second suction port body, and the engagement / disengagement of the lock member with the locking portion is interlocked with the rotation of the support pipe.   The relay pipe includes a rotatable switching member biased by a biasing member in a direction to close the first inlet, and pushes the switching member in a state where the fitting portion is fitted to the joint portion. The electric vacuum cleaner according to claim 1 or 2, wherein a push-up convex portion that opens and rotates to close the second inlet is provided in the joint portion.

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