JP2008022950A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner with a nozzle unit capable of stably retaining a nozzle part without using an adhesive by disposing a nozzle support part for supporting the nozzle part. <P>SOLUTION: The vacuum cleaner has: a handle grip 8 disposed at one end of a hose 6 whose the other end is detachably connected to a cleaner body 1; the nozzle unit 20 which is composed of a nozzle body 21 and the nozzle part 40 attached to the nozzle body 21, and which is detachably connected to the handle grip 8; an extension pipe 50 detachably connected to the nozzle unit 20; and a floor suction nozzle 60 detachably connected to the extension pipe 50. Air is sucked from the extension pipe 50 when the extension pipe 50 is connected to the nozzle unit 20, and air is sucked from the nozzle part 40 when the extension pipe 50 is detached. The nozzle unit 20 has the nozzle support part 32 which is extended diagonally downward from either side of the nozzle body 21 toward the upstream side and whose end is linked for supporting the nozzle part 40. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner, and more particularly to a vacuum cleaner provided with a nozzle that cleans a gap or a three-dimensional portion.

  In a conventional vacuum cleaner, a shaft support part having a long hole at the end of the hose is formed to project, and the shaft of the attachment for gap is supported on this shaft support part, and the extension pipe connected to the hose is removed to attach the attachment. Attached to the inner circumference of the hose by sliding the attachment along the elongated hole and rotating it, and then sliding the attachment along the elongated hole toward the cleaner body. (For example, refer to Patent Document 1).

  In addition, the hand handle part to which the hose is connected, the main body pipe and the nozzle part, the main body pipe is detachably connected to the hand handle part, and the attachment main part pipe is detachably connected. The extension pipe and the floor brush detachably connected to the extension pipe are connected. When the extension pipe is connected to the attachment main body connected to the hand handle, air is sucked from the extension pipe and the extension pipe is removed. There is a vacuum cleaner provided with a nozzle unit that sucks air from the nozzle part (see, for example, Patent Document 2).

JP 2000-51124 A (page 3-4, FIG. 1-5) JP 2006-34593 A (pages 8-9, FIGS. 16-19)

  The vacuum cleaner described in Patent Document 1 is extremely troublesome because the attachment (nozzle) must be connected to the connection pipe after removing the extension pipe each time the attachment (nozzle) is used.

The vacuum cleaner described in Patent Document 2 is very convenient because the extension pipe can be attached and detached while the nozzle portion is attached to the attachment, but the nozzle portion is screwed to the attachment main body with its base screwed. Since the hole is fitted to the engaging portion and bonded by the adhesive, there is a problem that not only is it troublesome, but also the amount of the adhesive and how to apply the adhesive are likely to vary.
Further, when a vertical load is applied to the tip of the nozzle, the adhesive may be peeled off, and when a large lateral load is applied to the nozzle, the nozzle may be deformed.

  The present invention has been made to solve the above problems, and by providing a nozzle support portion that supports the nozzle portion, a nozzle that can stably hold the nozzle portion without using an adhesive. It aims at providing the vacuum cleaner provided with the unit.

  An electric vacuum cleaner according to the present invention comprises a hand handle provided at the other end of a hose, one end of which is detachably connected to the vacuum cleaner body, a nozzle body, and a nozzle portion attached to the nozzle body. A nozzle unit detachably connected to the handle, an extension pipe detachably connected to the nozzle unit, and a floor suction tool detachably connected to the extension pipe, and extends to the nozzle unit When the pipe is connected, air is sucked from the extension pipe, and when the extension pipe is removed, air is sucked from the nozzle part. The nozzle unit is inclined diagonally downward from both sides of the nozzle body toward the upstream side. A nozzle support portion that extends and has a tip portion bridged to support the nozzle portion is provided.

  The present invention provides a nozzle support portion that supports the nozzle portion of the nozzle unit, so that the nozzle portion can be stably held without using an adhesive, and the extension pipe can be attached with the nozzle portion attached. Can be easily attached and detached, so that a convenient vacuum cleaner can be obtained.

[Embodiment 1]
FIG. 1 is an explanatory diagram showing the overall configuration of the electric vacuum cleaner according to Embodiment 1 of the present invention. In the following description, the electrical system is omitted.
The vacuum cleaner main body 1 is provided with a dust collection chamber 2, an electric blower 3, and the like, a front wheel 4a is provided at the bottom of the front surface, and rear wheels 4b are provided on both sides of the rear part.

  One end of the hose 6 constituting the hose unit 5 is provided with a connector 7 that is detachably connected to the suction port of the cleaner body 1, and the other end has a power handle, an operation button, etc. 8 is provided. The nozzle unit 20 as an attachment is fixed to the upstream side of the hand handle 8 (in the following description, the floor suction tool 60 side described later may be referred to as the upstream side and the cleaner body 1 side as the downstream side). Alternatively, the nozzle unit 40 is detachably connected to the lower portion of the nozzle body 21 constituting the nozzle unit 20 so as to be detachable.

  The extension pipe 50 is detachably connected to the nozzle body 21 substantially parallel to the nozzle portion 40, and the floor suction tool 60 is detachably connected to the suction port of the extension pipe 50. The nozzle unit 20 can be removed and the extension tube 50 can be directly connected to the hand handle 8 for use.

2 is a perspective view of the nozzle unit 20, and FIG. 3 is a cross-sectional view of FIG.
The nozzle main body 21 includes a main body tube 22 and a cover 23 covering the main body tube 22. A connection port 24 of an extension tube 50 is provided on the upstream side of the main body tube 22, and the connection port 24 is substantially equal on the lower surface. A communication port 25 with the nozzle unit 40 having a size is provided.
The connection port 24 of the extension pipe 50 is provided with an air path switching valve 26 for opening and closing the connection port 24, and the air path switching valve 26 is a spring interposed in a shaft 27 provided integrally therewith. 28 is biased in a direction to close the connection port 24.

  Further, a pair of guide portions 33a extending obliquely downward toward the upstream side are provided from both sides of the cover 23 of the nozzle body 21 at an interval substantially equal to the width of the cover 23, and the tip portions thereof are bridge plates 33b. And the bridge plate 33b is provided at a position in contact with the lower surface of the nozzle body 21 when the nozzle portion 40 is attached to the nozzle body 21. In addition, the guide part 33a is not limited to the shape of illustration, It can change suitably. Further, a soft material such as rubber may be provided on the upper surface of the bridge plate 33b.

  An extension tube 29 is supported by a shaft 29 a between the main body tube 22 and the cover 23, and a locking projection provided in the vicinity of the tip protrudes from a hole provided in the main body tube 22 to be connected to the main body tube 22. A lock lever for locking 50 is connected to the lock release button 30 and is constantly biased by a spring 35 so as to protrude into the main body tube 22.

The nozzle portion 40 includes a flat fixed side nozzle 41 that is detachably attached to the nozzle body 21 and a telescopic expandable nozzle 42 that is slidably inserted into the fixed side nozzle 41. An opening 45 that communicates with the communication port 25 of the nozzle body 21 is provided on the nozzle body 21 side of the fixed nozzle 41.
In addition, a brush base 46 that can be attached, detached, fixed, rotated, slid, and the like is provided at the distal end portion of the expansion / contraction nozzle 42. A material 47 is provided. Reference numeral 43 denotes a locking hole which is provided on the upper surface of the fixed nozzle 41 and engages and locks with a locking portion 31 provided below the connection port 24 of the nozzle body 21.

  In order to attach the nozzle portion 40 to the nozzle body 21 configured as described above, the base of the fixed nozzle 41 is installed in the space formed between the nozzle support portion 32 and the nozzle body 21 using the nozzle support portion 32 as a guide. The end portion is inserted, the locking hole 43 is fitted into the locking portion 31 provided in the nozzle body 21, and the vicinity of the downstream end portion is fixed to the nozzle body 21 with the screw 34. At this time, the lower surface of the nozzle portion 40 is supported by contacting the bridge plate 33b of the nozzle support portion 32, and the opening 45 provided in the fixed side nozzle 41 is aligned with the communication port 25 of the nozzle body 21, An air path extending from the nozzle portion 40 to the opening 45 and the communication port 25 is formed.

Thus, since the nozzle support part 32 was provided in the nozzle main body 21, the nozzle part 40 can be attached to the nozzle main body 21 easily and reliably by using the nozzle support part 32 as a guide. Further, since the nozzle portion 40 attached to the nozzle body 21 is supported by the nozzle support portion 32, the locking portion 31 and the locking hole 43 do not need to be bonded with an adhesive, and can be stably held. it can. Further, when a force is applied to the nozzle portion 40 from below the tip, it is fixed by a screw or the like, and when a force from above is applied to the tip of the nozzle portion, it is supported by the nozzle support portion 32. Since no extra stress is applied to the connecting portion between the nozzle 21 and the nozzle portion 40, the nozzle portion 40 is not detached or damaged.
When removing the nozzle portion 40 from the nozzle body 21, it is only necessary to remove the screw 34 and pull it forward, and the locking portion 31 and the locking hole 43 are not bonded, which is very easy.

  When the nozzle unit 20 to which the nozzle portion 40 is attached is connected to the hand handle 8, the connecting portion 22a of the nozzle unit 20 is inserted into the suction port 11 of the hand handle 8 as shown in FIGS. As a result, a lock lever (not shown) interlocked with the lock release button 12 provided on the hand handle 8 is engaged with the engagement portion 22b (see FIG. 3) provided on the connection portion 22a, and is fixed at that position. . Thereby, the air path from the nozzle part 40 to the hose unit 5 is formed.

  When detaching the nozzle unit 20 from the hand handle 8, the lock is released by pressing the lock release button 12 provided on the hand handle 8 or pulling the lever 10 interlocked with the lock lever. If pulled, it can be removed from the hand handle 8.

Next, the procedure for connecting the extension pipe 50 to the nozzle unit 20 connected to the hand handle 8 will be described with reference to FIGS.
The brush base 46 provided at the tip portion of the nozzle portion 40 is rotated downward so as not to interfere, and the connection portion 51 of the extension pipe 50 is inserted into the connection port 24 of the nozzle body 21 of the nozzle unit 20. As a result, the air path switching valve 26 is pushed by the extension pipe 50, pivots toward the downstream side around the shaft 27, opens the connection port 24, and further pushes the extension pipe 50. 26 rotates 90 ° to close the communication port 25. Then, the lock arm 29 provided on the nozzle body 21 is engaged with an engaging part (not shown) provided on the extension pipe 50, and the extension pipe 50 is fixed substantially parallel to the nozzle part 40.

Thereby, the air path from the extension pipe 50 to the nozzle body 21 and the hose unit 5 is formed, and the air path from the nozzle portion 40 to the nozzle body 21 is closed.
In order to remove the extension pipe 50, the lock release button 30 is pressed to release the lock, and the extension pipe 50 may be pulled forward.

Next, the operation of the vacuum cleaner configured as described above will be described.
In the normal state, that is, when the floor surface or the like is cleaned using the floor suction tool 60, the nozzle unit 20 is connected to the hand handle 8 and the extension pipe 50 is connected to the nozzle unit 20 as shown in FIG. The hose unit 5 to which the suction tool 60 for floors was connected to the front-end | tip part is connected to the suction inlet of the cleaner body 1 by connecting.
Thereby, an air passage from the floor suction tool 60, the extension pipe 50, the nozzle unit 20, and the hand handle 8 to the hose 6 is formed, and the air passage from the nozzle portion 40 to the nozzle main body portion 21 is formed by the air passage switching valve 26. It is blocked.

  Then, a cord (not shown) provided on the vacuum cleaner body 1 is connected to a power source, a power switch provided on the hand handle 8 is turned on, the electric blower 3 is driven, and the floor suction tool 60 is placed on the floor surface or the like. If moved along, the dust sucked from the floor suction tool 60 by the suction force of the electric blower 3 is sent to the cleaner body 1 through the extension pipe 50, the nozzle unit 20, and the hose unit 5 to be collected in the dust collecting chamber. The air collected in 2 and separated from the dust and the like is cleaned by a filter (not shown), cools the motor and control board of the electric blower 3, and is discharged to the outside through an exhaust port (not shown). . In addition, the extension pipe 50 is extended or added as needed, and the length is adjusted.

  When the nozzle unit 50 is used to clean a gap or a three-dimensional part, as described above, the lock release button 30 provided on the nozzle unit 20 is pressed to release the lock, and the extension pipe 50 is removed from the nozzle unit 20. . By removing the extension pipe 50, the air path switching valve 26 is urged and rotated by the spring 28, closes the connection port 24 of the nozzle unit 20, and opens the communication port 25.

Then, by turning on the power switch of the hand handle 8 and driving the electric blower 3, the nozzle portion 40 cleans the gap and the like. In addition, you may adjust the length of the nozzle part 40 suitably with the expansion-contraction nozzle 42 as needed.
When the floor surface or the like is cleaned again by the floor suction tool 60, the extension pipe 50 may be connected to the nozzle unit 20 as described above.

  Thus, according to this Embodiment, since the extension pipe | tube 50 can be attached or detached easily, with the nozzle part 40 being attached to the nozzle unit 20, the user-friendly vacuum cleaner can be provided.

[Embodiment 2]
FIG. 8 is a cross-sectional view of a main part of a nozzle unit of a vacuum cleaner according to Embodiment 2 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the present embodiment, a spring 39 is provided along the air path switching valve 26 on the back side (downstream side) of the air path switching valve 26 urged in a direction to close the connection port 24 of the nozzle body 21 by the spring 28. The stopper 38 urged upward is provided in a state in which a part thereof protrudes from the peripheral edge of the air passage switching valve 26.

Further, the lock release button 30 and the lock arm 29 pivotally supported by the shaft 29a are integrally formed, and the lower surface of the lock release button 30 on the side opposite to the lock arm 29 is opposed to the stopper 38. A portion 36 is projected. Note that the lock release button 30 is biased upward by a spring 35, and a part thereof protrudes from a hole provided in the cover 23.
Further, a hole 37 is provided at a position facing the protruding portion 36 of the main body tube 22, and a part of the stopper 38 protrudes from the hole 37 and is in contact with or adjacent to the protruding portion 36. .

  With this configuration, when dust or the like is sucked by the nozzle portion 40, the air path switching valve 26 rotates backward (downstream) about the shaft 27 by the suction force and tries to fall down. Since the stopper 38 is locked in the hole 37, the air path switching valve 26 is prevented from falling down, and the amount of air flowing in from the gap formed between the connection port 24 and the air path switching valve 26 is made constant. Since it can be maintained, a stable suction force can be transmitted to the suction port 44 of the nozzle portion 40. In this state, the extension pipe 50 cannot be connected to the nozzle unit 20.

When the lock release button 30 is squeezed down, as shown in FIG. 9, the tip of the lock arm 29 moves upward, and the protrusion 36 descends to squeeze the stopper 38 and remove it from the hole 37.
When the state where the lock release button 30 is pressed down and the suction by the electric blower 3 overlap, as shown in FIG. 10, when the suction force is stronger than the biasing force of the spring 28, the air path switching valve 26 is located downstream. The air passage switching valve 26 stops falling at a position where the biasing force and the suction force of the spring 28 are balanced, and is held at that position. Note that the extension pipe 50 can be connected by inserting the extension pipe 50 into the connection port 24 in the state of FIG. 9 and rotating the air passage switching valve 26 to the downstream side.

  According to the present embodiment, even when the suction force at the tip of the nozzle portion 40 is too strong to be operated, the lock release button 30 is pressed down to tilt the air passage switching valve 26 and the connection port 24 and the air passage By increasing the amount of air flowing in from the gap with the switching valve 26, the suction force of the suction port 44 of the nozzle portion 40 can be reduced, making it easier to use.

  Further, when the suction port 44 of the nozzle portion 40 is blocked by dust or the like, the suction force applied to the air path switching valve 26 increases, so that the air path switching valve 26 further falls backward, and the connection port 24 and the air path Since the amount of air flowing in from the gap with the switching valve 26 is increased, the temperature rise of the electric blower 3 can be prevented. When the electric blower 3 is stopped, the air passage switching valve 26 is urged and rotated by the spring 28 to close the connection port 24 and the stopper 38 is urged by the spring 39 and inserted into the hole 37 again. Return to the locked state.

  Further, according to the present embodiment, the lock arm 29 and the protruding portion 37 for releasing the lock of the stopper 38 are formed integrally with the lock release button 30, so that the structure is simple and the cost can be reduced.

It is explanatory drawing which shows the whole structure of the vacuum cleaner which concerns on Embodiment 1 of this invention. It is a perspective view of the nozzle unit of FIG. FIG. 3 is a cross-sectional view of FIG. 2. It is explanatory drawing which shows the procedure which connects a nozzle unit to the hand handle of FIG. It is explanatory drawing which shows the procedure which connects a nozzle unit to the hand handle of FIG. It is explanatory drawing which shows the procedure which connects an extension pipe | tube to the nozzle unit of FIG. It is explanatory drawing which shows the procedure which connects an extension pipe | tube to the nozzle unit of FIG. It is sectional drawing which shows the principal part of the nozzle unit of the vacuum cleaner which concerns on Embodiment 2 of this invention. FIG. 9 is an operation explanatory diagram of the nozzle unit of FIG. 8. FIG. 9 is an operation explanatory diagram of the nozzle unit of FIG. 8.

Explanation of symbols

1 Vacuum Cleaner Body, 5 Hose Unit, 8 Hand Handle, 20 Nozzle Unit, 21 Nozzle Body, 22 Main Body Pipe, 23 Cover, 24 Connection Port, 25 Communication Port, 26 Air Path Switch Valve, 27 Axis, 28 Spring, 30 Lock Release button, 31 Locking part, 32 Nozzle support part, 36 Protruding part, 37 hole, 38 Stopper, 40 Nozzle part, 41 Fixed side nozzle, 42 Telescopic nozzle, 43 Locking hole, 45 Opening part, 46 Brush base, 50 Extension pipe, 60 floor suction tool.

Claims (6)

A nozzle comprising a hand handle provided at the other end of a hose, one end of which is detachably connected to the cleaner body, and a nozzle body and a nozzle portion attached to the nozzle body, the nozzle being detachably connected to the hand handle A unit, an extension pipe that is detachably connected to the nozzle unit, and a floor suction tool that is detachably connected to the extension pipe. When the extension pipe is connected to the nozzle unit, air flows from the extension pipe. And when the extension tube is removed, the nozzle portion is configured to suck air.
An electric vacuum cleaner, wherein the nozzle unit is provided with a nozzle support portion that extends obliquely downward from both sides of the nozzle body toward the upstream side and has a tip portion bridged to support the nozzle portion.   The nozzle support portion is constituted by a guide portion that extends obliquely downward from both sides of the nozzle body toward the upstream side, and a bridge plate that bridges the tip portion of the guide portion. Item 1. A vacuum cleaner according to item 1.   The electric vacuum cleaner according to claim 2, wherein a soft material is attached to an upper surface of the bridge plate of the nozzle support portion.   The one end of the nozzle part is inserted from a space formed between a nozzle body and a nozzle support part of the nozzle unit and attached to the nozzle body. Electric vacuum cleaner.   The electric cleaning according to any one of claims 1 to 4, wherein a brush base having flocking or raising material is provided in the vicinity of the tip of the nozzle portion and is attachable / detachable / fixed / rotated / slidable. Machine. Consists of a hand handle provided at the other end of the hose, one end of which is detachably connected to the cleaner body, a nozzle body covered with a cover, and a nozzle portion attached to the nozzle body. A nozzle unit connected to the nozzle unit, an extension pipe detachably connected to the nozzle unit, and a floor suction tool detachably connected to the extension pipe. When the extension pipe is connected to the nozzle unit, It is configured to suck air from the extension pipe and to suck air from the nozzle portion when the extension pipe is removed,
An air passage switching valve that opens and closes the connection port is provided at the connection port of the extension pipe of the nozzle body, and is biased upward by a spring provided in the air passage switching valve on the downstream side of the air passage switching valve. Is provided with a stopper projecting from a hole provided in the nozzle body, a projection having a projection facing the stopper on one side, and a lock arm for locking the extension pipe on the other side, and attached to a spring. An electric vacuum cleaner comprising a lock release button that is biased to protrude from a hole provided in the cover.

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