JP5100444B2 - Vacuum cleaner and suction port - Google Patents

Description

  The present invention relates to an electric vacuum cleaner that includes an auxiliary brush in addition to a suction port body and that can be attached to and detached from the auxiliary brush and the suction port body.

  A suction port body of a conventional vacuum cleaner includes a rotating connection tube that is rotatably provided behind the suction port body, and a tilting connection tube that is rotatably provided on the rotating body. Generally, it is configured to be detachable from the distal end portion of the extension pipe of the vacuum cleaner by a lock mechanism provided in the connection pipe.

  When cleaning narrow places where the suction port cannot enter or high places that are difficult to clean by lifting the suction port, remove the suction port from the tip of the extension tube and suck in dust from the tip of the extension tube. Can be cleaned.

  However, in order to attach and detach the suction port body to and from the extension pipe, it is necessary for the user of the vacuum cleaner to operate the lock mechanism by gripping the suction port body on the surface to be cleaned, and the operability is poor.

Therefore, in the vacuum cleaner described in Patent Document 1, when the tilting connection tube connected to the extension tube is rotated by a predetermined angle, the operation portion of the lock mechanism is pressed by the pressing portion formed on the suction port body. Thus, the extension pipe can be removed from the suction port body by releasing the lock between the tilting connection pipe and the extension pipe. In other words, it is possible to unlock the tilt connection pipe and extension pipe by rotating the tilt connection pipe by a predetermined angle while holding the hand control pipe connected to the extension pipe. Is planned.
JP 2005-296284 A

  In a conventional vacuum cleaner, for example, when cleaning a niche where there is not enough space above the surface to be cleaned, such as under a bed, the suction port body is rotated by rotating the rotary connection tube of the suction port body. And the extension pipe can be cleaned along the surface to be cleaned.

  At this time, the user of the vacuum cleaner cannot fully observe the state of the suction port body, and may strongly collide or press the suction port body against an obstacle such as a wall beside the bed. If it does so, there exists a possibility that a tilting connection pipe may rotate, the operation part of a lock mechanism may be pressed by a suction inlet main body, an obstruction, etc., and the lock | rock with a tilting connection pipe and an extension pipe may be cancelled | released. When the lock between the tilting connection pipe and the extension pipe is released, the suction port body is unexpectedly detached from the extension pipe and left in the niche.

  Therefore, the suction port body locking mechanism of the conventional vacuum cleaner is formed so that its operation part does not protrude along the outer shape of the cover part of the tilting connection pipe, i.e., from the outer surface of the cover part. Unintentional pressing of the operation unit due to rotation is avoided.

  However, if the operation part of the lock mechanism does not protrude from the outer surface of the cover part, the operability of the lock mechanism can be used if the vacuum cleaner user wants to grasp the suction port body and remove the extension pipe from the suction port body. Will decline.

  The present invention improves the operability of the lock mechanism when removing the extension tube from the suction port body, and prevents the extension tube from being unexpectedly detached from the suction port body due to the rotation of the suction port body. Propose a machine.

  In order to solve the above problems, in the present invention, the suction port main body and one end thereof are connected to the connection pipe mounting recess formed in the suction port main body, and the other end is attached to and detached from the extension pipe communicated with the cleaner main body. A connecting pipe that is freely hooked, and the connecting pipe is connected to the rotating connecting pipe that is rotatable around an axis along the advancing and retracting direction of the suction port body, and the rotating connecting pipe, A tilting connection tube that can tilt in the advancing and retreating direction with respect to the suction port body, and a separation that releases the latching between the extension tube and the connection tube when the tilting angle of the tilting connection tube becomes a predetermined angle with respect to the surface to be cleaned And at the peripheral edge of the connecting pipe mounting recess of the suction port body, the separating means is latched when the tilting angle of the tilting connecting pipe becomes a predetermined angle with respect to the surface orthogonal to the surface to be cleaned. An extension tube misplacement prevention means for preventing release is provided.

  According to the present invention, the operability of the lock mechanism when removing the extension tube from the suction port body is improved, and the suction port body from which the extension tube is not unexpectedly detached from the suction port body due to the rotation of the suction port body and A vacuum cleaner can be proposed.

  An embodiment of a vacuum cleaner according to the present invention will be described with reference to FIGS. 1 to 7.

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

  As shown in FIG. 1, a vacuum cleaner 1 according to this embodiment includes a vacuum cleaner main body 2, a dust collection hose 3 having one end connected to a connecting port 2 a provided in the vacuum cleaner main body 2, and a detachable white background. The hand operation tube 4 having one end provided at the other end of the dust collecting hose 3, the extension tube 5 having one end detachably connected to the other end of the hand operation tube 4, and the other end of the extension tube 5 are detachable And a suction port body 6 connected to.

  The hand operating tube 4 is provided with an operating portion 4a. The operating portion 4a has a switch 4b for stopping the driving of the electric blower 7 accommodated in the cleaner body 2 and a strength switch 4c for setting the blowing power of the electric blower 7. Etc. are provided.

  The vacuum cleaner main body 2 is housed therein, and the electric blower 7 that applies a negative pressure to the suction port body 6 through the connection port 2a and the dust sucked together with the air by the negative pressure generated by the electric blower 7 from the air. A detachable dust separating and collecting unit (not shown) that separates and collects dust, and air in which dust is collected in the dust separating and collecting unit is exhausted to the outside of the cleaner body 2 as exhaust air from the electric blower 7. And a main body exhaust port (not shown).

  FIG. 2 is a perspective view showing a suction port body and a part of the extension pipe of the electric vacuum cleaner according to the present invention.

  For ease of explanation, the following description will be given with the posture shown in FIG. 2 as the basic posture, with the solid arrow X forward, the solid arrow Y left, and the solid arrow Z upward. .

  As shown in FIG. 2, the extension pipe 5 includes an extension pipe main body 11 and an auxiliary cleaning body 12 detachably connected to the extension pipe main body 11.

  The extension tube main body 11 is a tube portion extending from the hand operation tube 4.

  The auxiliary cleaning body 12 includes an auxiliary pipe part 14 connected to the extension pipe main body 11, an auxiliary brush part 15 rotatably provided at one end of the auxiliary pipe part 14, and an illumination part that illuminates the front of the auxiliary brush part 15. 16 and an upper cover 17 and a lower cover 18 of the illumination unit 16.

  A connecting tube portion 20 is formed at the other end of the auxiliary tube portion 14, and an air passage that is inserted into the extension tube body 11 and communicated with the extension tube body 11 is formed. When the release button 21 of the extension pipe body 11 is pressed, the auxiliary cleaning body 12 can be removed from the extension pipe body 11.

  The auxiliary brush portion 15 includes an annular frame portion 22 in which a rotation shaft (not shown) with respect to the auxiliary tube portion 14 is formed, and a raised portion 23 that extends from the annular frame portion 22 in the longitudinal axis direction of the extension tube 5. The The raised portions 23 are formed by densifying thin flexible shafts made of resin, for example, and fixing their roots to the annular frame portion 22.

  The suction port body 6 includes a suction port main body 25 and a connecting pipe portion 26 provided at the rear center portion of the suction port main body 25. The extension pipe 5 is detachably connected to the connection pipe portion 26.

  The suction port body 25 includes an upper case 28, a lower case 29, and a bumper portion 30 that is sandwiched between the upper case 28 and the lower case 29. The bumper part 30 is provided over substantially the entire circumference of the side surface of the suction inlet body 25.

  The connection pipe part 26 is rotatable about the X axis that is the advancing and retreating direction of the suction port body 6 with respect to the suction port body 25, and on the X axis with respect to the rotation connection pipe part 32. A tilting connection pipe portion 33 that can be rotated around an orthogonal r-axis, that is, can be tilted with respect to the X axis that is the advancing and retreating direction of the suction port body 6, and provided on the tilting connection pipe portion 33 and extended with the suction port body 6 It is comprised from the locking mechanism 34 as a separation means which changes the coupling | bonding state with the pipe | tube 5. As shown in FIG.

  The lock mechanism 34 is pivotally connected when the push button part 36 formed to protrude from the outer shape of the tilting connection pipe part 33 and the tilting connection pipe part 33 connected to the extension pipe 5 are rotated by a predetermined angle. And a pressed protrusion 38 that is pressed by a pressing portion 37 formed on the tube portion 32.

  The pressing button portion 36 and the pressed projection portion 38 as the pressed portion are arranged side by side, and the pressing button portion 36 protrudes from the outer shape of the tilted connecting pipe portion 33 rather than the pressed projection portion 38. It is formed.

  Since the pressing button portion 36 is formed so as to protrude from the outer shape of the tilted connecting pipe portion 33 and protrude from the pressed protrusion portion 38, the user of the vacuum cleaner 1 holds the suction port body 6 and sucks it. When it is desired to remove the extension pipe 5 from the mouth body 6, the unlocking operation of the lock mechanism 34 can be performed very easily.

  FIG. 3 is a perspective view showing a suction port body and a part of the extension pipe of the electric vacuum cleaner according to the present invention.

  As shown in FIG. 3, the connecting pipe portion 26 is provided in the connecting pipe mounting recess 39 formed in the rear center portion of the suction port body 25 of the suction port body 6.

  The connecting tube mounting recess 39 includes an upper case recess 41 formed in the upper case 28, a lower case recess 42 formed in the lower case 29 corresponding to the upper case recess 41, and the upper case recess 41 and the lower case recess 42. And a notch portion 43 formed in the bumper portion 30 so as to correspond thereto. Further, the connecting tube mounting recess 39 is formed on the periphery of the rotating connecting tube portion 32 while being appropriately separated so as not to hinder the rotating connecting tube portion 32 of the connecting tube portion 26 from rotating.

  In the notch end portion 45 of the notch portion 43 of the bumper portion 30 disposed in the connecting pipe mounting recess 39, an accidental prevention as an extension pipe misplacement preventing means protruding toward the rear of the suction port body 6 is prevented. Ribs 46 are formed.

  The rotary connecting pipe part 32 is formed with a pressing part 37 having a surface parallel to the r-axis which is the rotary axis of the tilting connecting pipe part 33.

  When the extension pipe 5 is connected to the connection pipe portion 26 of the suction port body 6, when the extension pipe 5 is raised from the X axis about 80 ° to 100 °, preferably 80 °, with the r axis as the tilting center, a lock mechanism 34 pressed protrusions 38 are brought into contact with the pressing portion 37. When the extension pipe 5 is further raised, the pressed protrusion 38 is pressed by the pressing portion 37 and the lock mechanism 34 is released.

  FIG. 4 is a longitudinal sectional view showing a suction port body and a part of the extension pipe of the vacuum cleaner according to the present invention.

  As shown in FIG. 4, the auxiliary cleaning body 12 of the extension pipe 5 has a hooked portion 50 at one end of the auxiliary pipe portion 14 corresponding to the lock mechanism 34 of the suction port body 6.

  The inside of the upper cover 17 of the auxiliary cleaning body 12 is partitioned into a receiving portion for the hooked portion 50 and a receiving portion for the illumination portion 16 by ribs 51 protruding from the auxiliary pipe portion 14.

  A concave portion 52 is formed in the housing portion of the illumination portion 16 of the upper cover 17, and a boss 53 is projected from the auxiliary tube portion 14. The upper cover 17 is screwed to the boss 53 by the recess 52. The upper cover 17 closes the upper portion of the hooked portion 50.

  An intake chamber 56 having a suction port 55 facing the surface to be cleaned F is formed in the lower front portion of the suction port body 25 of the suction port body 6. The intake chamber 56 accommodates a rotary cleaning body 58 having a brush 57 that is rotated by a motor (not shown). The rotary cleaning body 58 faces the surface to be cleaned F through the suction port 55. The rear side of the intake chamber 56 communicates with the connection pipe portion 26.

  A pair of left and right leg portions 60 project from the rear end portion of the suction port body 25. A rear wheel 61 is rotatably supported between the leg portions 60.

  The connecting pipe portion 26 has a connecting pipe suction port 62 that is sandwiched between the upper case 28 and the lower case 29 and communicated with the intake chamber 56. A rear portion of the connection pipe suction port 62 communicates with the rotary connection pipe portion 32.

  The rotary connection pipe portion 32 communicates with the connection pipe suction port 62 and is rotatable around the X axis, and a rotary connection pipe lower cover 64 that covers the lower portion of the rotary connection pipe 63. Consists of

  The tilt connection pipe portion 33 communicates with the rotation connection pipe 63 and is rotatable about the r-axis orthogonal to the X axis, and the tilt connection pipe upper cover 67 that covers the upper portion of the tilt connection pipe 66. It consists of.

  The lock mechanism 34 includes a swinging portion 71 configured by a swinging member 69 that maintains the coupling state of the suction port body 6 and the extension pipe 5 and an auxiliary lever 70 of the swinging member 69. The swing member 69 is biased by the coil spring 72 and the auxiliary lever 70 is biased by the coil spring 73 in a direction to maintain the coupling state of the suction port body 6 and the extension pipe 5.

  The swing member 69 maintains or releases the coupling state between the extension pipe 5 and the tilting connection pipe portion 33 of the suction port body 6. The swing member 69 includes a pressing button portion 36 formed at the distal end portion on the suction port body 25 side, a hook-like claw portion 75 formed at the distal end portion on the extension tube 5 side, and a rear side of the pressing button portion 36. The swing shaft 76 is formed, and a circular annular portion 78 formed at the rear of the swing shaft 76 and having a hole at the center.

  A spring insertion recess 79 is formed inside the pressing button portion 36. A projection 81 is formed on the tilting connection tube 66 so as to face the spring insertion recess 79 of the push button portion 36. One end of the coil spring 72 is inserted into the spring insertion recess 79 and the other end is fitted into the protrusion 81 to urge the swing member 69.

  The rocking shaft 76 pivotally supports the rocking member 69 so as to be rotatable around an r ′ axis that is substantially parallel to the r axis that is the rotation axis of the tilting connecting pipe portion 33.

  A boss 82 projecting from the tilt connection pipe 66 is inserted into the hole of the circular annular portion 78 so as to be separated. Even if the swing member 69 swings, the swing member 69 and the boss 82 do not interfere with each other. The boss 82 is used to fix the tilt connection pipe upper cover 67 to the tilt connection pipe 66.

  The claw portion 75 of the swinging member 69 is urged by a coil spring 72 provided on the pressing button portion 36, and is latched by a hook-shaped latching plate portion 83 formed on the latched portion 50 of the auxiliary cleaning body 12. Is done. When the coupling between the claw portion 75 and the retaining plate portion 83 is released, the extension pipe 5 can be detached from the suction port body 6.

  A protrusion 84 that is in contact with the pressed protrusion 38 of the auxiliary lever 70 is formed at the end of the swing member 69 on the pressing button portion 36 side.

  The auxiliary lever 70 includes a pressed projection 38, a pair of lever portions 85 formed to protrude rearward from the left and right of the pressed projection 38, and a shaft hole 87 formed at the rear end of the lever 85. It consists of.

  A spring insertion recess 88 is formed inside the pressed protrusion 38. The spring insertion recess 88 is provided with a projection 89 into which one end of the coil spring 73 is fitted. A projection 90 is formed on the tilting connection tube 66 so as to face the spring insertion recess 88 of the pressed projection 38. One end of the coil spring 73 is fitted into the projection 89 and the other end is fitted into the projection 81 to urge the auxiliary lever 70.

  The shaft hole 87 has a hole through which the swing shaft 76 of the swing member 69 is inserted, and pivotally supports the auxiliary lever 70 around the r ′ axis.

  The swing part 71 is biased by a coil spring 72 that biases the swing member 69 and a coil spring 73 that biases the auxiliary lever 70. The coil spring 72 has an elastic force that allows the suction port body 6 to be sufficiently hooked on the extension pipe 5 by the claw portion 75 of the swinging member 69 and the hooking plate portion 83 of the hooked portion 50. Similarly, the coil spring 73 has an elastic force that can sufficiently hook the suction port body 6 to the extension pipe 5. The elastic coefficient of the coil spring 73 is set larger than the elastic coefficient of the coil spring 72.

  When the pressing button portion 36 of the swing member 69 is pressed, the auxiliary lever 70 does not swing, but only the swing member 69 is swinged, and the coupling between the claw portion 75 and the latch plate portion 83 is released. The

  When the pressed protrusion 38 of the auxiliary lever 70 is pressed, the swing member 69 is swung via the protrusion 84 and the coupling between the claw portion 75 and the latch plate portion 83 is released.

  That is, when the extension pipe 5 is detached from the suction port 6 by operating the push button part 36, the push button part 36 is pushed against the urging force of the coil spring 72.

  On the other hand, when the extension pipe 5 is detached from the suction port body 6 by operating the pressed protrusion 38, the pressing button 36 is pressed against the urging force of the coil spring 72 and the coil spring 73.

  Therefore, the extension tube 5 can be detached from the suction port 6 with a lighter force when the pressing button portion 36 is pressed than when the pressed protrusion 38 is pressed.

  FIG. 5 is a longitudinal sectional view showing the suction port body and a part of the extension pipe of the electric vacuum cleaner according to the present invention, and showing a state in which the tilting connection pipe portion is erected.

  As shown in FIG. 5, when the extension pipe 5 is connected to the connection pipe portion 26 of the suction port body 6, the extension pipe 5 is substantially tilted with respect to the surface to be cleaned F parallel to the X axis with the r axis as the tilting center. When the erected position is 80 ° to 100 °, preferably 80 °, the pressed protrusion 38 is brought into contact with the pressing portion 37. Since cleaning is not performed by raising the extension pipe 5 close to 90 ° (80 ° to 100 °) from the floor surface during normal floor surface cleaning, the extension pipe 5 is configured to be separable when it stands 90 °. In addition, the standing angle at the time of separating the extension pipe 5 from the suction inlet body 6 may be removable at an arbitrary angle according to the usage pattern of the electric vacuum cleaner 1.

  When the extension pipe 5 is further raised, the pressing portion 37 presses the pressed protrusion 38, and the pressed protrusion 38 swings the swing member 69 via the protrusion 84 of the swing member 69. Then, the coupling between the claw portion 75 of the swinging member 69 and the latch plate portion 83 of the latched portion 50 is released. Furthermore, when the extension pipe 5 is pulled up in the direction of the solid arrow A, the extension pipe 5 and the suction port body 6 are separated, and the extension pipe 5 is detached from the suction port body 6.

  In addition, when the extension pipe 5 is connected to the connection pipe part 26 of the suction inlet body 25, when the user of the vacuum cleaner 1 presses the pressing button part 36 with a finger or the like, the swinging member 69 is swung, The coupling between the claw portion 75 and the latch plate portion 83 is released. When the suction port body 6 is further pulled away from the extension tube 5, the suction port body 6 and the extension tube 5 are separated, and the extension tube 5 is detached from the suction port body 6.

  When the suction port body 6 is detached from the extension pipe 5, cleaning can be performed using the auxiliary cleaning body 12 of the extension pipe 5.

  When the extension pipe 5 is coupled to the separated suction port body 6, the connection tube portion 20 of the suction port body 6 is passed through the inner side of the annular frame portion 22 provided in the auxiliary brush portion 15 of the auxiliary cleaning body 12 and extended. The pipe 5 is brought close to the suction port body 6. Then, the claw portion 75 of the swinging member 69 gets over the latch plate portion 83 of the latched portion 50 and the extension pipe 5 and the suction port body 6 are coupled.

  Here, consider a case where the vacuum cleaner 1 is used to clean a niche where there is not enough space above the surface to be cleaned, such as under a bed.

  FIG. 6 is a plan view showing the suction port body and a part of the extension pipe of the electric vacuum cleaner according to the present invention, and showing a state where the rotary connecting pipe part is rotated.

  As shown in FIG. 6, when the tilting connection pipe part 33 is tilted from the state where the rotary connection pipe part 32 of the suction port body 6 is rotated, the tilting connection pipe part 33 is against the surface orthogonal to the surface to be cleaned. Tilt. When the rotation connecting pipe portion 32 of the suction port body 6 is turned, for example, by 90 ° on the horizontal surface to be cleaned, the tilting connecting pipe portion 33 is inclined with respect to the vertical plane. Then, the user of the electric vacuum cleaner 1 can clean the suction port body 6 and the extension pipe 5 along the surface to be cleaned.

  If it does so, even if it is a niche where there is not enough space above the surface to be cleaned like under a bed, cleaning will become possible.

  At this time, the surface to be cleaned can be cleaned while the angle between the suction port body 6 and the extension tube 5 is changed as desired by rotating the tilting connection pipe portion 33 of the suction port body 6.

  FIG. 7 is a perspective view illustrating a part of the suction port body of the electric vacuum cleaner according to the present invention and illustrating a state in which the rotating connection pipe portion is rotated.

  As shown in FIG. 7, when the rotation connection pipe portion 32 of the suction port body 6 is rotated and the tilt connection pipe portion 33 is tilted with respect to a surface orthogonal to the surface to be cleaned, the lock mechanism 34 is pressed. The protrusion 38 approaches the suction inlet body 25. Then, the erroneous removal prevention rib 46 formed on the bumper portion 30 of the suction port body 25 is brought into contact with the front wall portion 92 of the pressed protrusion 38.

  At this time, a contact C between the erroneous removal preventing rib 46 and the front wall 92 of the pressed projection 38 is considered.

  The front wall 92 is inclined by a required inclination angle α with respect to the tangent L at the contact C with respect to a circle R ′ centering on the r ′ axis, which is the rotation center of the shaft hole 87 of the pressed projection 38. The

  The inclination angle α is inclined in the same direction as the rotation direction β in which the auxiliary lever 70 is pressed to release the coupling. The rotation direction β is the pressing direction of the pressing button portion 36 and the pressed protrusion 38 when the coupling between the claw portion 75 of the swinging member 69 and the locking plate portion 83 of the locked portion 50 is released. is there.

  In a state where the rotation connecting pipe portion 32 is rotated by approximately 90 °, the distance from the r-axis that is the rotation center of the tilting connection pipe portion 33 to the tip end portion of the accidental removal prevention rib 46 is the same as that of the tilting connection pipe portion 33. The distance D is substantially equal to the distance D from the r-axis that is the center of rotation to the contact C of the front wall 92.

  Therefore, when the front wall 92 is pressed against the accidental prevention rib 46, the accidental prevention rib 46 slides on the front wall 92 in the direction of the solid arrow B by the force f applied to the front wall 92 from the contact C. The auxiliary lever 70 is rotated in the rotation direction γ opposite to the rotation direction β around the r ′ axis.

  Then, the auxiliary lever 70 does not press the projection 84 of the swing member 69, and the latch of the swing member 69 is not released. That is, the coupling between the claw portion 75 of the swinging member 69 and the latch plate portion 83 of the latched portion 50 is not released, and the coupled state between the suction port body 6 and the extension pipe 5 is maintained.

  In addition, by forming the accidental removal prevention rib 46 arbitrarily on the periphery of the connection pipe mounting recess 39 of the suction port body 25, the connection state of the suction port body 6 and the extension pipe 5 at the place where the erroneous removal prevention rib 46 exists is provided. Maintenance can be ensured.

  The vacuum cleaner 1 according to the present embodiment is configured such that the suction port body 6 is detachably attached to the extension pipe 5.

  The extension pipe 5 is provided with a hooked portion 50 having a hooking plate portion 83, while the suction port body 6 has a swinging member 69 that maintains the coupling state between the extension pipe 5 and the suction port body 6. A lock mechanism 34 is provided. That is, the hooked portion 50 and the lock mechanism 34 are lock portions that detachably couple the extension pipe 5 and the suction port body 6.

  This lock part releases the coupling between the extension pipe 5 and the suction port body 6 when the angle formed between the X axis substantially parallel to the surface to be cleaned F such as the floor and the extension pipe 5 is rotated by a predetermined angle. The extension pipe 5 can be separated from the suction port body 6.

  Therefore, if the user of the vacuum cleaner 1 raises the extension pipe 5 with respect to the suction port body 6 while holding the hand operation tube 4, the extension pipe 5 and the suction port body 6 can be immediately separated. Then, when cleaning a narrow place where the suction port body 6 cannot enter or a high place where the suction port body 6 is lifted and difficult to clean, the cleaning is performed using the suction port body 6 or the auxiliary cleaning body 12. The mode of use of the vacuum cleaner 1 can be switched easily and quickly. Moreover, the user of the vacuum cleaner 1 does not need to bend or squat to hold the suction port body 6, and feels less tired. Of course, the user of the vacuum cleaner 1 can grasp the suction port body 6 by hand to separate the extension pipe 5 and the suction port body 6 from each other.

  In addition, the lock portion is rotated when the push button portion 36 formed to protrude from the outer shape of the tilt connection tube portion 33 and the tilt connection tube portion 33 connected to the extension tube 5 are rotated by a predetermined angle. The pressed protrusion 38 is pressed when the pressing button portion 36 is pressed, and the pressed protrusion 38 is pressed by the pressing portion 37 formed in the dynamic connection pipe portion 32. The extension pipe 5 can be detached from the suction port body 6 with a lighter force than when.

  Therefore, during normal use of the vacuum cleaner 1, the suction port body 25 escapes in the biasing direction by the biasing force of the coil spring 72 and the coil spring 73 even if the pressed projection 38 is accidentally pressed, so that the lock is released. There is no end. Further, when the user of the vacuum cleaner 1 removes the suction port body 6 from the extension pipe 5 when cleaning the suction port body 6, the user operates the push button portion 36 that is easy to push and can be unlocked with a light force. Then, since the suction inlet body 6 can be removed from the extension pipe 5, it is easy to use.

  Further, the vacuum cleaner 1 according to the present embodiment, for example, when the narrow portion that is difficult to clean in a normal state such as under a bed is cleaned, the rotary connecting pipe portion 32 of the suction port body 6 is approximately 90. It is possible to clean the extension pipe 5 and the suction port body 6 along the surface to be cleaned by turning the nozzle.

  At this time, when the tilting connection pipe part 33 of the suction port body 6 is rotated, the press button part 36 formed by protruding from the outer shape of the tilting connection pipe part 33 approaches the suction port body 25, but the press button part Prior to abutting 36 on the suction port body 25, the erroneous removal prevention rib 46 formed on the bumper portion 30 of the suction port body 25 is brought into contact with the front wall 92 of the pressed projection 38. If it does so, since the coupling | bonding of the nail | claw part 75 of the rocking | swiveling member 69 and the latching plate part 83 of the to-be-latched part 50 will not be cancelled | released, since the coupling state of the suction inlet body 6 and the extension pipe | tube 5 is maintained. The extension pipe 5 does not come off unexpectedly during cleaning.

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

  According to the vacuum cleaner 1 which concerns on this embodiment, while improving the operativity of the lock mechanism 34 at the time of removing the extension pipe 5 from the suction inlet body 6, it extends from a suction inlet body unexpectedly by rotation of a suction inlet main body. The tube will not come off.

The figure which showed the external appearance of the vacuum cleaner which concerns on this invention. The perspective view which shows the suction inlet of the vacuum cleaner which concerns on this invention, and a part of extension pipe | tube. The perspective view which shows the suction inlet of the vacuum cleaner which concerns on this invention. The longitudinal cross-sectional view which shows the suction inlet of the vacuum cleaner which concerns on this invention, and a part of extension pipe | tube. The longitudinal cross-sectional view which shows the suction inlet of the vacuum cleaner which concerns on this invention, and a part of extension pipe | tube, and shows the state which stood the tilting connection pipe part. The top view which shows the suction inlet body of the vacuum cleaner which concerns on this invention, and a part of extension tube, and shows the state which rotated the rotation connection pipe part. The perspective view which shows a part of suction inlet of the vacuum cleaner which concerns on this invention, and shows the state which rotated the rotation connection pipe part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner 2 Vacuum cleaner main body 2a Connection port 3 Dust collection hose 4 Hand operation pipe 4a Operation part 4b Off switch 4c Strength switch 5 Extension pipe 6 Suction port body 7 Electric blower 11 Extension pipe body 12 Auxiliary cleaning body 14 Auxiliary pipe part 15 Auxiliary brush part 16 Illumination part 17 Upper cover 18 Lower cover 20 Connection cylinder part 21 Release button 22 Annular frame part 23 Brushed part 25 Suction port body 26 Connection pipe part 28 Upper case 29 Lower case 30 Bumper part 32 Rotating connection pipe part 33 Tilt connection pipe part 34 Lock mechanism 36 Press button part 37 Press part 38 Pressed protrusion part 39 Connection pipe mounting concave part 41 Upper case concave part 42 Lower case concave part 43 Notch part 45 Notch end part 46 Mistake prevention rib 50 Cover Stop portion 51 Rib 52 Recessed portion 53 Boss 55 Suction port 56 Suction chamber 57 Brush 58 Rotating cleaning body 60 Leg portion 61 Rear wheel 62 Connection pipe suction port 63 Dynamic connecting pipe 64 Rotary connecting pipe lower cover 66 Tilt connecting pipe 67 Tilt connecting pipe upper cover 69 Oscillating member 70 Auxiliary lever 71 Oscillating part 72 Coil spring 73 Coil spring 75 Claw part 76 Oscillating shaft 78 Circular annular part 79 Spring insertion recess 81 Projection part 82 Boss 83 Stop plate part 84 Projection part 85 Lever part 87 Shaft hole part 88 Spring insertion recessed part 89 Projection part 90 Projection part 92 Front wall part

Claims (3)

The inlet body,
One end is connected to a connecting pipe mounting recess formed in the suction port body, and the other end has a connecting pipe that is detachably hooked to an extension pipe communicating with the cleaner body,
The connecting pipe is
A rotating connection tube that is rotatable about an axis along the advancing and retracting direction of the suction port body;
A tilting connecting pipe connected to the rotating connecting pipe and tiltable in a forward / backward direction with respect to the suction port body;
Separating means for releasing the latching between the extension pipe and the connection pipe when the tilt angle of the tilt connection pipe reaches a predetermined angle with respect to the surface to be cleaned;
In the peripheral part of the connecting pipe mounting recess of the suction port body,
An electric cleaning device comprising: an extension tube mis-detachment preventing means for preventing the release of the separating means when the tilting angle of the tilted connecting pipe reaches a predetermined angle with respect to a surface orthogonal to the surface to be cleaned. Air inlet of the machine. The suction port body includes a bumper portion on a side surface,
The suction port body of the vacuum cleaner according to claim 1, wherein the extension pipe mis-detachment preventing means is provided at an end portion of the bumper portion disposed in the connection pipe mounting recess.   The vacuum cleaner provided with the said suction inlet body of Claim 1 or 2 in the end of the said extension pipe | tube.

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