JP2006034520A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of disposing the wiring in the interior of a rotary cleaning body driven by a motor in a suction port body with a three-way rotary mechanism. <P>SOLUTION: The vacuum cleaner comprises the suction port body 1 with the rotary cleaning body 11 and the motor 111 inside, a case 3 for attaching a suction port joint attached at the center in the longitudinal direction of the suction port body in such a way as turnable in the horizontal direction, a return means for returning the rotation position of the case 3 to a normal position relative to the suction port body, a first suction port joint 5 pivoted at the case 3 in such a way as oscillatable in the vertical direction, and a second suction port joint 7 connected to the suction port joint 5 via an inclined connection face 6 in such a way as relatively turnable. An electrical connection part is disposed above the engagement part of the suction port joint 7 connected to an extension pipe on the cleaner body side, and a lead wire 122 connected to the electrical connection part for feeding electricity to the motor is connected to a control board 102 disposed on the opposite side from the motor via a side of a cylindrical joint part 18 of the suction port joint 5 through an insertion hole formed on the connection face and through a center hole of the case 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vacuum cleaner, and more particularly to a wiring structure in a suction body of a vacuum cleaner equipped with a rotary cleaning body driven by an electric motor.

  2. Description of the Related Art Conventionally, a rotary brush or an agitator mounted inside a suction body (suction tool) of a vacuum cleaner is known. In this type of vacuum cleaner mouthpiece, the feeder wire (lead wire) is wired to the motor that drives the rotating brush and agitator, while the vacuum cleaner main body has a hose and an extension pipe inside each peripheral wall. A feed line is routed through to the connecting portion at the tip of the extension pipe, and both the feed lines are electrically connected at the same time that the suction body and the extension pipe are mechanically connected.

  And from the viewpoint of aesthetics and wiring protection, the above-mentioned feed line is provided inside each member so as not to be seen from the outside. In particular, for the feeder line on the mouthpiece side, one that realizes internal wiring has been proposed (for example, see Patent Document 1).

JP-A-9-168491

  However, in the mouthpiece disclosed in Patent Document 1, the mouthpiece joint (bent joint) connected to the mouthpiece body via the joint portion can be rotated only in two directions different from each other in the vertical direction and the joint pipe circumferential direction. It is not. Therefore, in such a joint structure, when cleaning the partition wall or the wall of the furniture, the suction body does not automatically face the partition wall or the wall surface of the furniture just by striking the suction body against the wall surface, There is a problem that the operation is troublesome and it is difficult to clean the wall.

  On the other hand, recently, there is an extension tube that can stand on the mouthpiece main body, and a tube that can clean a narrow gap such as under a bed. The thing of the said patent document 1 can also clean the bottom of a bed etc., and the extension pipe | tube is not able to stand now. Further, when cleaning such a narrow gap, if the suction body does not face the wall surface freely, there will be a portion left uncleaned.

  In order to solve the above-described problems, it is suitable to configure the joint structure of the suction joint so as to be rotatable in three directions, that is, in the horizontal direction, the vertical direction, and the oblique direction. However, when such a three-way joint structure is adopted, particularly in a suction body equipped with a rotary cleaning body driven by an electric motor, there are many parts constituting the joint part, so that the power feed line should be provided. It is extremely difficult, and in fact, no suction plug joint structure having a three-way rotation mechanism has been realized in which a feed line is built.

  Accordingly, an object of the present invention is to obtain a vacuum cleaner that realizes internal wiring of a rotary cleaning body driven by an electric motor in a suction body having a three-way rotation mechanism.

  In order to solve the above problems, a vacuum cleaner according to the present invention has a suction port on the bottom surface, a suction body with a rotary cleaning body and an electric motor for driving the rotary cleaning body, and a longitudinal direction of the suction body. A suction joint mounting case that is horizontally pivotally attached to the central portion in the direction and communicates with the suction port; and a return means that returns the rotational position of the suction joint mounting case to the normal position with respect to the suction body; A first suction joint that is pivotally supported by the suction joint mounting case so as to swing up and down, and a second suction joint that is coupled to the first suction joint so as to be relatively rotated via an oblique coupling surface. An electrical connection portion on the fitting portion of the second suction joint connected to the extension pipe on the vacuum cleaner body side, and a lead wire connected to the electrical connection portion for supplying power to the electric motor. From the insertion opening provided in the coupling surface, Through the side of the cylindrical joint portion of one suction joint is further through the central hole of the suction fitting mounting case made by connecting to the control board disposed on the opposite side of the electric motor.

  Since the present invention is configured as described above, in the suction body having a suction joint that is rotatable in three directions, that is, in the vertical and horizontal directions, and in the oblique directions with respect to the suction body, rotation driven by an electric motor. It is possible to realize internal wiring of the cleaning body.

Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.
1 is a perspective view of a mouthpiece of a vacuum cleaner showing the present embodiment, FIG. 2 is a top view of the mouthpiece, FIG. 3 is a front view of the mouthpiece, and FIG. 4 is a cross-sectional side view taken along line AA in FIG. 5 is a top view of the suction body showing the state where the upper case and the wiring cover of the suction body are removed, FIG. 6 is a top view of the suction joint assembly with the case for attaching the suction joint and the wiring cover removed, and FIG. 6 is a bottom view of FIG. 6, FIG. 9 is an exploded perspective view showing the suction body from below, FIG. 10 is an exploded perspective view showing the suction joint assembly from below, and FIG. 11 is a first suction joint. FIG. 12 to FIG. 17 are explanatory views of the locking operation, FIG. 12 is a top view of the inlet joint assembly of FIG. 14, and FIG. 13 is the inlet joint assembly of FIG. Front view of solid body, FIGS. 14 to 17 are suction joints showing the operation of the lock member according to the standing angle. In cross-sectional view of a three-dimensional, FIG. 17 is a sectional view of a suction coupling assembly during locking. Moreover, FIG. 18 is explanatory drawing when cleaning a 2nd suction joint parallel to a wall.

(overall structure)
First, the overall configuration of the electric vacuum cleaner according to the present embodiment will be described with reference to FIG. FIG. 19 is a schematic side view of the vacuum cleaner.
This vacuum cleaner includes a vacuum cleaner main body 101 in which an electric blower, a control circuit, a dust collection filter, and the like are incorporated, a hose 102 connected at one end to a suction port of the vacuum cleaner main body 101, and a switch operation unit (not shown). A hand handle portion 103 that is provided and connected to the other end of the hose 102 and is operated by the user's hand, and an attachment main body portion such as a gap nozzle provided in a branched shape at the tip of the hand handle portion 103 104, an extension pipe 105 to which one end side is connected to the other branch connection port part of the hand handle part 103 via an open / close valve (not shown), and a mouthpiece 10 to which the other end side of the extension pipe 105 is connected. Yes. In the figure, reference numeral 106 denotes a trigger for removing the extension tube 105 from the hand handle portion 103.

As will be described later, an electrical connection portion is provided in the fitting portion of the second mouthpiece joint of the mouthpiece 10, and at the same time as the second mouthpiece joint and the extension pipe 105 are connected and connected, Connected, the wiring on the cleaner body 101 side and the wiring on the mouthpiece 10 side are electrically connected.
The hand handle 103 does not have to be provided with an attachment main body such as a gap nozzle as described above, and only a normally used extension tube may be detachably connected. Further, the extension pipe may be either a telescopic type in which the pipe expands or contracts, or a joint pipe type in which a plurality of pipes are connected.

(Composition of mouthpiece)
Next, the configuration of the mouthpiece 10 will be described with reference to FIGS. 1 to 17 showing details of the P portion in FIG.
The suction body 10 has a suction port 2 on the bottom surface, and a suction body 1 mounted with a rotary cleaning body 11 facing the suction port 2 and an electric motor 111 for driving the rotary cleaning body 11, and the suction body 1. A suction joint mounting case 3 that is attached to the central portion in the longitudinal direction so as to be horizontally rotatable and communicates with the suction port 2, and a twist that returns the rotational position of the suction joint mounting case 3 to the normal position with respect to the suction body 1. The return means comprising the spring 4, the first suction joint 5 that is pivotally supported in the suction joint mounting case 3 so as to swing up and down, and the first suction joint 5 through a slanting coupling surface 6. The second suction joint 7 is connected so as to rotate, and the first suction joint 5 and the second suction joint 7 are locked to the suction joint mounting case at an angle of about 90 °. Yes. In addition, the “normal position” herein refers to a position when the mouthpiece 10 and the second mouthpiece joint 7 are T-shaped when viewed from above, and is the most frequently used straight cleaning. It is a state.

  One of the electrical connection portions 120 between the extension pipe 105 and the second suction joint 7 described above is provided on the fitting portion 71 of the second suction joint 7. This electrical connection portion 120 is configured as a connector means using the extension pipe 105 made of synthetic resin as an insulator and the second suction joint 7, and the connection pin 121 is provided on the second suction joint 7 side. Sockets (not shown) to which the connection pins 121 are inserted and connected are provided on the extension tube 105 side.

  In addition, a wiring cover 72 is attached to the second suction joint 7 with a screw, and the connection pin 121 is covered with the wiring cover 72 so that the tip end portion is exposed on the fitting portion 71 of the second suction joint 7. . Therefore, when not connected (when the extension pipe 105 is removed), the tip of the connection pin 121 is only visible from the outside, and the lead wire 122 wired to the connection pin 121 is internally provided in the mouthpiece body 1 as will be described later. Is hidden.

  The fitting part 71 of the second suction joint 7 is inserted into the inner periphery of the extension pipe 105 so as to be airtightly connected. At the same time as this connection, the connection pin 121 is provided in the peripheral wall part of the extension pipe 105. It is electrically connected to a socket (not shown). Therefore, the connection pin 121 is not visible from the outside during this connection.

  Further, each of the above-described constituent members will be described in detail. As shown in FIGS. 4 to 11, the inlet body 1 has a lower case 8 provided with an inlet 2 on the bottom surface, and a lower case 8 covering the upper part thereof. An upper case 9 that is attached to the motor, a rotary cleaning body 11 that is rotatably supported in the interior facing the suction port 2, an electric motor 111 that drives the rotary cleaning body 11, and power supply and control to the electric motor 111. And a control board 112 for performing the above.

  FIG. 5 is a top view of the suction body 10 with the upper case 9 and the wiring cover 72 removed from the suction body 1. As shown in FIG. The electric motor 111 is arranged on the right side when viewed from above toward the front of the suction body 10, and the control board 112 is arranged on the left side. In FIG. 5, the rotary cleaning body 11 is hidden under the upper cover 8 a provided in the lower case 8.

  The rotary cleaning body 11 is composed of a rotating brush or an agitator driven by an electric motor 111, and bearing cases (not shown) at both ends are sandwiched and supported by the lower case 8 and the upper case 9. Further, the electric motor 111 is attached to the right side of the lower case 8 in FIG. 5 and is coupled so as to transmit power to the rotary cleaning body 11 via a timing belt transmission mechanism 113 including a toothed pulley and a toothed belt. ing.

The control board 112 is attached to the left side of the lower case 8 in FIG. 5, and the control board 112 and the electric motor 111 are connected by a connector 114 and a lead wire 115.
One receiving connector of the connector means is attached on the control board 112, and a plug connector 123 is connected to the other end of the lead wire 122 having one end connected to the connection pin 121. Is connected to the receiving connector on the control board 112.

(Configuration of inlet joint)
A suction joint mounting case 3 constituting one of the suction joints is attached to the rear part of the longitudinal center of the suction body 1 so as to be horizontally rotatable. Here, the suction joint is configured so that the second suction joint 7 to which the extension pipe 105 is connected can be rotated with respect to the suction body 1 in up, down, left, and right directions. That is, it is a universal joint composed of a three-direction rotating mechanism. The configuration is as follows.

  The upper case 9 of the mouthpiece body 1 is formed with a semicircular cutout 12 having a rear opening at the attachment position of the mouthpiece fitting mounting case 3, and the mouthpiece fitting mounting case 3 is formed in the notch 12. It is held between the upper case 9 and the lower case 8 of the mouthpiece body 1 and is mounted so as to be rotatable in a horizontal plane. The suction joint mounting case 3 includes a joint mounting upper case 13 and a joint mounting lower case 14, and an opening 15 communicating with the suction port 2 of the suction body 1 is formed on the front surfaces of the upper and lower cases 13 and 14. Has been. In addition, a second joint mounting lower case 14a is provided separately in the joint mounting lower case 14 in order to facilitate wiring of the lead wires 122. Further, each of the joint mounting upper case 13 and the joint mounting lower case 14 (including the second joint mounting lower case 14a) has an arcuate guide at each front portion of the upper and lower walls forming the opening 15. Protrusions 16 a and 16 b are formed, and these arcuate guide protrusions 16 a and 16 b are formed into arcuate guide grooves 17 a provided in the cutout portion 12 of the upper case 9 of the mouthpiece body 1 and a circle formed in the lower case 8. By engaging each with an arcuate guide groove (not shown), the suction joint mounting case 3 has a predetermined rotation angle in the horizontal direction with respect to the suction body 1 in the horizontal direction (each about 45 °, a total of about 90 °). ) To rotate.

  Further, the first suction joint 5 is rotatably mounted on the suction joint mounting case 3 so as to rotate (swing) at an angle of about 90 ° with respect to the suction body 1. The first suction joint 5 is formed as a bent joint, and a cylindrical joint portion 18 is formed at the front thereof. Rotating shafts 19 project from the left and right side walls of the cylindrical joint portion 18, while the joint mounting upper case 13 and the joint mounting lower case 14 (in the illustrated example, the second joint mounting lower case). 14a) is formed with bearing parts 20 formed of semicircular arc-shaped notches, and the rotary shaft 19 is sandwiched and supported in these bearing parts 20 from above and below. Moreover, both the rotating shafts 19 are arranged so that the center line is parallel to the longitudinal direction of the mouthpiece body 1 at the above-described normal position. The first suction joint 5 and the second suction joint 7 are arranged in a direction perpendicular to the center line of the rotating shaft 19. A rectangular opening 21 is formed at the front of the cylindrical side surface of the first suction joint 5, and the opening 21 communicates with the suction port 2 of the suction body 1 through the opening 15 of the suction joint mounting case 3. (FIGS. 4, 13, and 14). The second suction joint 7 is coupled to the first suction joint 5 so as to rotate relative to the first suction joint 5, and the joint surface 6 is about 45 ° with respect to the central axis common to both the suction joints 5, 7. The second suction joint 7 is inclined by about 90 ° in each of the left and right directions with respect to the center of the first suction joint 5 by the inclined circular groove provided on the coupling surface 6 and the protrusion engaging therewith. It can be rotated about 180 degrees in total.

(Configuration of return means)
The return means comprises a torsion spring 4, and automatically restores the suction joint mounting case 3 to the original normal position by the urging force of the torsion spring 4 given in the rotational direction. In this example, the torsion spring 4 is interposed between a receiving case 22 fixed by a screw on the lower case 8 of the mouthpiece body 1 and a joint lower case 14 of the mouthpiece fitting case 3 ( FIG. 9, FIG. 10, FIG. In the receiving case 22, a spring-cylinder cylinder 23 projects from the bottom, and a coil portion of the torsion spring 4 is inserted (externally fitted) into the spring-carrying cylinder 23. In addition, an arcuate spring locking wall 24 for hooking both ends of the torsion spring 4 and defining its return position (normal position) forwardly protrudes around the spring cylinder 23 at the bottom of the receiving case 22. At the rear, an arcuate guide wall 25 for guiding the suction joint mounting case 3 is projected.

  On the other hand, the lower cylinder 14 for fitting attachment of the suction fitting attaching case 3 has a guide cylinder 26 on its lower surface, which is slidably fitted to the spring-loaded cylinder 23 of the receiving case 22 to position the rotation center. It is provided hanging down. Further, around the guide cylinder 26, it is fitted forwardly inside the arc of the spring locking wall 24 of the receiving case 22, that is, between both ends of the torsion spring 4, and its return position (normal position) by the torsion spring 4. And a slide wall 28 that is slidably fitted and guided on the outer side of the arc of the guide wall 25 of the receiving case 22 hangs down. Is provided. Further, stopper ribs 29 are provided at both ends of the slide wall 28 to restrict the rotation of the torsion spring 4 so that the rotation range of the suction joint mounting case 3 is about 45 ° on each side (about 90 ° in total). .

(Configuration of locking means)
As shown in FIG. 4, FIG. 11, and FIG. 14, the locking means 30 is disposed at the center position on the upper surface in the normal position of the first suction joint 5. A plate-like lock member 31 is inserted between guide walls 32 provided in the axial direction of the first suction joint 5 and is slidably attached. A long hole 33 is provided in the lock member 31, and a screw mounting boss 35 for mounting the lock member cover 34 and a spring mounting portion 37 for mounting one end of the spring 36 are inserted into the long hole 33. Further, the other spring mounting portion is formed on the lower surface (back surface) of the lock member 31, and the spring 36 is mounted on these spring mounting portions 37, 38 so that the lock member 31 is moved forward (inlet joint mounting case 3). Side). Further, the rear end portion 31b of the lock member 31 is formed to be smaller in width than the front end portion 31a, and a notch groove 39 into which the rear end portion 31b is fitted is formed in the outer peripheral edge portion of the coupling surface 6 of the first suction joint 5. Is provided. Further, an appropriate chamfer 31c such as an R or C surface is provided at the lower end of the lock member 31.

On the other hand, a rib-like engagement protrusion 40 is formed on the upper surface of the suction joint mounting case 3 side with which the lock member 31 is engaged. The engaging protrusion 40 is also appropriately chamfered 40a such as an R or C surface. Further, an engagement recess 42 is formed on the inner surface of the wiring cover 72 attached to the upper surface of the second suction joint 7 on the rear end side of the lock member 31 corresponding to the notch groove 39. The bottom wall serves as an abutting portion 43 with which the rear end (upper end) of the locking member 31 abuts when locked. Further, the engaging recess 42 is formed so as to protrude on the surface of the wiring cover 72, and therefore, the periphery of the engaging recess 42 is an open region for allowing the rear end portion 31 b of the lock member 31 to escape. That is, the rear end portion 31b of the lock member is inserted into and engaged with the engaging recess 42 only when the first suction joint 5 and the second suction joint 7 are straight.
The lock member 31 is covered with a cover 34, and the cover 34 is attached to the first suction joint 5 with one or a plurality of screws. By adjusting the backlash of the lock member tip 31a with the cover 34, the operating force (joint turning force) and holding force (locking force) at the time of locking can be adjusted.

(Wiring structure)
The wiring structure of the connection pins 121 will be described in more detail with reference to FIGS.
A lead wire 122 having a predetermined length is connected to each of the two connection pins 121 in advance, and the plug connector 123 is connected to the other end of the lead wire 122. The plug connector 123 can be connected after passing through the lead wire 122. However, if the connection pins 121 and the plug connector 123 are respectively connected to both ends of the lead wire 122 in advance as described above, the wiring is performed. Is easy.

  The connection pin 121 is placed on a support portion 73 formed of a notch groove provided at the center of the upper surface of the second suction joint 7, and the connection pin 121 is fixed at a predetermined position by screwing the wiring cover 72 thereon. It is fixed to the upper surface center portion of the second inlet joint 7. The connection pin 121 is not shown in FIG.

  The length of the lead wire 122 is adjusted and set at a position where the lead wire 122 extends to the maximum. That is, the first and second suction joints 5 and 7 have such a length that there is a margin at the position where the first and second suction joints 5 and 7 are rotated from the normal position to the right side in FIG. As a result, even if the first and second suction joints 5 and 7 are rotated in the left-right direction and further in the up-down direction, the lead wire 122 has a margin for moving around under the wiring cover 72. The wire 122 is not twisted or pulled to be disconnected.

  An insertion port 124 for the lead wire 122 is provided on the side of the coupling surface 6 of the first suction joint 5 and the second suction joint 7, that is, on the left side of FIG. The size of the insertion opening 124 is not particularly limited, but it is preferable that at least the connection pin 121 can pass through. The lead wire 122 goes out from the left side surface of the cylindrical joint portion 18 of the first suction joint 5 through the insertion port 124. Actually, the connecting pin 121 is passed through the insertion port 124 from the opposite direction. Further, a notch 125 and a hook 126 for guiding the lead wire 122 are provided on the left side surface (bearing plate) of the second joint mounting lower case 14a, and the bottom surface of the second joint mounting lower case 14a is provided on the bottom surface. A plurality of guide ribs 127 are provided, and a notch 129 is provided on the side surface of the guide cylinder 128 protruding from the center of the bottom surface. The guide cylinder 128 has a function to reinforce the cylinder 26 by fitting into the guide cylinder 26 of the joint mounting lower case 14 described above, and the guide cylinders 128 and 26 are center holes for drawing out the lead wires 122. Is forming. Further, the lead wire hooking portion 126 is preferably open at the front rather than being open at the rear because the lead wire 122 is less likely to come off.

  Thus, the lead wire guide means for guiding the lead wire 122 along the bottom surface from the left side surface of the second joint mounting lower case 14a, that is, the notch portion 125, the hook portion 126, the guide rib 127, and the guide cylinder 128 notch. Lead wire guide means comprising a portion 129 is provided. The lead wire 122 enters the central guide cylinder 128 (center hole) from the left side surface to the bottom surface of the second joint mounting lower case 14a by the lead wire guide means, and further enters the second joint mounting lower case 14a. Is pulled out from the central guide cylinder 26 (center hole) of the joint mounting lower case 14. Thereafter, the joint mounting upper case 13 is fixed to the joint mounting lower case 14 with screws, whereby the suction joint assembly 50 as shown in FIG. 11 (an exploded view is shown in FIGS. 9 and 10; The lead wire 122 and the like are not shown).

Thereafter, the plug connector 123 connected to the tip end of the lead wire 122 is pulled out through the spring-loaded cylinder 23 (center hole) of the receiving case 22 described above. Of course, the connecting pin 121 may be received in the opposite direction and passed through the spring-loaded cylinder 23 of the case 22 before passing the insertion port 124 as described above. Further, an appropriate guide rib is provided on the bottom surface of the receiving case 22 to guide the lead wire 122 toward the control board 112. Then, by connecting the plug connector 116 to the receiving connector on the control board 112, the wiring on the suction body 10 side is completed.
Further, the return means described above is interposed between the joint mounting lower case 14 and the receiving case 22, and the cases 14 and 22 are fixed on the lower case 8 of the mouthpiece body 1 with screws. Further, the upper case 9 is attached and fixed on the lower case 8 to complete the mouthpiece 10.

  As described above, the lead wire 122 is routed for each of the suction joint assemblies 50 in which the first and second suction joints 5 and 7 are incorporated in the suction joint mounting case 3. Therefore, the wiring of the lead wire 122 is easy and the assembly of the suction joint assembly 50 is also easy.

(Other configurations)
A shutter 45 for closing the gap between the first suction joint 5 and the suction joint mounting case 3 to prevent air leakage is attached so as to be interlocked with the rotation of the first suction joint 5.
The lower case 8 of the mouthpiece main body 1 is provided with a raised cloth 46 as a support on the front side from the front edge to the lower surface on both sides of the front end, and a raised cloth as a support on the rear side at the rear end. The wheel 47 is mounted so that the axle is parallel to the longitudinal direction of the mouthpiece body 1 after the wheel is wound. A switch 48 with a wheel for turning on and off the electric motor 111 is attached in the middle of the lower case 8. The switch 48 is lowered by its own weight when the suction body 10 is lifted, and turns off the electric motor 111.
A bumper 49 for reducing impact is attached to the front portion of the upper case 9 of the mouthpiece body 1.

  Next, the operation of the electric vacuum cleaner configured as described above will be described. When cleaning a normal floor surface, carpet or the like, the extension pipe 105 is connected to the second inlet joint of the mouthpiece 10 as shown in FIG. 7 and the hand handle portion 103, the first suction joint 5 and the second suction joint 7 are straightened, and the suction body 10 is held by the hand handle portion 103 to perform cleaning while pushing and pulling back and forth. At this time, the pipe body after the first suction joint 5 can be swung up and down around the rotation shaft 19 of the first suction joint 5 in accordance with the forward and backward movement of the suction body 10. In addition, since the rotary cleaning body 11 can be cleaned while being driven to rotate by the electric motor 111, it is possible to remove things such as hair and filaments entangled with a carpet or the like. Furthermore, if the first suction joint 5 is swung to the lowest end, the pipe body from the first suction joint 5 to the hand handle 103 can be made substantially parallel to the floor surface, and the whole suction body 10 can be made. The height is low, and it is possible to clean a narrow place with a low height, such as under furniture or a bed, without moving the furniture.

  Further, when the suction body 10 collides with a wall or furniture (especially furniture, a desk leg, etc.) during forward movement, the suction body 1 automatically rotates relative to the suction joint mounting case 3, thereby impacting. In order to relieve the force, it is possible to prevent the wall, furniture or the mouthpiece body 1 from being damaged. Further, when the interference between the furniture and desk legs and the mouthpiece main body 1 is eliminated after passing through the furniture and desk legs, the mouthpiece body 1 is automatically returned to the original normal position by the return force of the torsion spring 4. Return to. Further, even when the suction body 10 is abutted diagonally against a wall or furniture, the suction body 10 automatically faces the wall surface by the suction joint mounting case 3, so that it is easy to clean the wall. In addition, the mouthpiece body 1 is easily cleaned because it is always held in a direction perpendicular to the operation direction (the mouthpiece body 10 and the extension pipe 105 are T-shaped) unless they hit the wall or furniture.

  Further, when the hand handle portion 103 is operated to twist the second suction joint 7, the second suction joint 7 is turned relative to the first suction joint 5 from the coupling surface 6 in an oblique direction and bent. Therefore, for example, when the mouthpiece body 1 is pressed against the wall as shown in FIG. 18 and the second mouthpiece joint 7 is twisted, the mouthpiece body 1 and the second mouthpiece joint 7 can be made parallel. It is possible to efficiently clean a narrow wall near the wall.

  Further, when cleaning an extremely narrow place where the mouthpiece 10 is not required, such as the back side of furniture, the extension pipe 105 is removed by the trigger 106 of the hand handle 103. As a result, since the attachment main body 104 for the gap nozzle is attached to the hand handle portion 103, the gap nozzle can be inserted into the back side of the furniture for cleaning. An opening / closing valve (not shown) is provided at the connection port of the extension pipe 105 of the hand handle 103, and when the extension pipe 105 is removed, the connection port is closed by the opening / closing valve.

  Next, the locking operation of the locking unit 30 will be described. First, as shown in FIG. 20, with the extension pipe 105 connected to the second inlet joint 7, the first inlet joint 5 and the second inlet joint 7 are straightened to stand up to about 90 °. As described above, the case 3 for attaching the suction joint is always returned to the normal position by the torsion spring 4 and held, and therefore, the extension pipe 105 need only be raised. At this time, the lock member 31 operates as shown in FIGS. 14 to 17 according to the standing angle. That is, the lock member 31 rotates around the rotation shaft 18 together with the first and second suction joints 5, 7, and the engaging ridge 40 protrudes on the suction joint mounting case 3. When contacted, the lock member 31 is pushed up against the force of the spring 36. Accordingly, the rear end portion 31 b of the lock member 31 enters the engagement recess 42 formed on the inner surface of the cover 41 of the second suction joint 7 through the notch groove 39. When the lock member 31 is further rotated, the distal end portion 31 a gets over the engaging ridge 40 and falls to the front side of the engaging ridge 40 by the force of the spring 36. Then, at the lock position rotated at a predetermined angle, the front end (lower end) of the lock member 31 abuts the upper surface of the suction joint mounting case 3 on the front side of the engaging protrusion 40, and the rear end ( The upper end is in contact with the contact portion 43 in the engagement recess 42 and is locked in a state where the lock member 31 is pressed from above. At the same time, the first suction joint 5 and the second suction joint 7 are prevented from rotating. Next, as shown in FIGS. 20 and 21, the hand handle portion 103 is removed from the extension tube 105 by the trigger 106 of the hand handle portion 103. Accordingly, the extension pipe 105 connected to the second suction joint 7 can be stably and reliably held in a state where the extension pipe 105 is erected on the suction joint mounting case 3 of the suction body 1.

  Therefore, even if clothes, hands, etc. touch the extension tube 105 carelessly, the extension tube 105 does not easily fall down, so that furniture, floors, etc. are not damaged. In addition, when the cleaning is interrupted or when the vacuum cleaner is stored, the extension pipe 105 can be kept in a self-supporting state, so that the user can handle it while standing up. Convenient. Further, since the storage space can be reduced, storage is easy without taking up space. Furthermore, since the extension pipe 105 in a self-supporting state is unlocked if pulled to a certain extent strongly, cleaning can be resumed easily.

  Further, the first inlet joint 5 and the second inlet joint 7 are locked only when they are straight. That is, even if the second suction joint 7 is to be locked in a slightly bent state, the rear end portion 31b of the lock member 31 hits the inlet portion of the engagement recess 42, and the front end portion 31a of the lock member 31 pushes the engagement protrusion 40. I can't get over it, so it's not locked. Furthermore, in a state where the second suction joint 7 is bent more than that, the front end portion 31a of the lock member can get over the engagement protrusion 40, but the rear end portion 31b of the lock member is engaged with the engagement recess 42. The second suction joint 7 can be easily pulled back because it is disengaged and enters the open area (open space) outside thereof and is not engaged. In short, the second inlet joint 7 is not locked in a bent state or is in an unstable state even when the lock is inserted, so that the first inlet joint 5 and the second inlet joint 7 are not straight. It is not locked. Accordingly, the extension tube 105 can be made independent and stable.

  Further, the holding force (locking force) at the time of locking is set such that the head portion of the suction body 10 does not drop when the extension pipe 105 connected to the second suction joint 7 is lifted. If the locking force is too strong, it will be difficult to release the lock. Conversely, if the locking force is too weak, the head will drop easily when lifted. Because it is difficult to do.

  According to the present embodiment, as described above, the suction body 10 is provided with a suction joint having a rotation mechanism in three directions, and the electric vacuum cleaner can be accommodated in a state where the extension pipe 105 is self-supported. Alternatively, the cleaning can be temporarily interrupted, and it is not necessary to connect the extension pipe 105 to the mouthpiece 10 when starting the cleaning, which is very convenient and easy to use. Moreover, since all the lead wires 122 for supplying power to the electric motor 111 are housed in the suction body 10 as described above, wiring protection is achieved without being caught, and the appearance is also excellent. Is. Of course, the lead wire 122 is not twisted or pulled inside during the cleaning operation or the self-supporting operation, so that the wire 122 is not disconnected.

The perspective view of the mouthpiece of the vacuum cleaner which shows Embodiment 1 of this invention. The top view of the mouthpiece of FIG. The front view of the mouthpiece of FIG. AA sectional side view of FIG. The top view of a suction body which shows the state which removed the upper case and wiring cover of the suction body. The top view of a suction-joint assembly of a state which removed the suction-joint attachment case and the wiring cover. The side view of FIG. The bottom view of FIG. The disassembled perspective view which shows the mouthpiece of FIG. 1 from the downward direction. The disassembled perspective view which shows a suction-joint assembly from the downward direction. The perspective view which shows the state which removed the cover for lock members of the 1st suction joint. FIG. 15 is a top view of the mouthpiece joint assembly of FIG. 14. The front view of the suction coupling assembly of FIG. Sectional drawing of a suction-joint assembly which shows operation | movement of the lock member accompanying a standing angle. Sectional drawing of a suction-joint assembly which shows operation | movement of the lock member accompanying a standing angle. Sectional drawing of a suction-joint assembly which shows operation | movement of the lock member accompanying a standing angle. Sectional drawing of an inlet-joint assembly at the time of a lock | rock. Explanatory drawing when cleaning a 2nd suction joint parallel to a wall. The schematic side view of the vacuum cleaner of this invention. The side view when an extension pipe is locked. The side view when the hand handle is removed and the extension pipe is made independent.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Suction body, 2 Suction port, 3 Suction joint mounting case, 4 Torsion spring, 5 First suction joint, 6 Connection surface 7 Second suction joint, 8 Lower case, 9 Upper case, 10 Suction body, 11 Rotating cleaning body , 13 Joint mounting upper case, 14 Joint mounting lower case, 14a Second joint mounting lower case, 18 Cylindrical joint, 19 Rotating shaft, 21 Opening, 22 Receiving case, 23 Spring-loaded cylinder, 24 Spring Locking wall, 25 guide wall, 26 guide cylinder, 27 spring locking wall, 28 slide wall, 29 stopper rib, 30 lock means, 31 lock member, 34 cover for lock member, 40 engaging ridge, 50 inlet joint assembly Solid, 71 Fitting part, 72 Wiring cover, 73 Support part, 101 Vacuum cleaner body, 102 Hose, 103 Hand handle part, 104 Attachment body part, 105 Extension pipe, 106 G Rigger, 111 motor, 112 control board, 113 timing belt transmission mechanism, 120 electrical connection part, 121 connection pin, 122 lead wire, 123 plug connector, 124 insertion slot, 128 guide cylinder, 129 notch.

Claims (5)

  A suction port body having a suction port on the bottom surface and equipped with a rotary cleaning body and an electric motor for driving the rotary cleaning body, and attached to the suction port in a horizontally rotatable manner at the longitudinal center of the suction body. The suction joint mounting case communicated, the return means for returning the rotational position of the suction joint mounting case to the normal position with respect to the suction body, and the pivot joint pivotally supported by the suction joint mounting case A first suction joint, and a second suction joint coupled to the first suction joint so as to relatively rotate via an oblique coupling surface, and connected to an extension pipe on the cleaner body side. An electrical connection portion is provided on the fitting portion of the two suction joints, and a lead wire connected to the electrical connection portion for supplying power to the electric motor is connected to the first suction joint from the insertion port provided on the coupling surface. Through the side of the cylindrical joint of the Vacuum cleaner that through the central bore of the mouth fitting mounting case, characterized by being connected to the electric motor and the control board disposed on the opposite side.   The electric vacuum cleaner according to claim 1, wherein a connecting pin is connected to one end of the lead wire and a connector is connected to the other end, and the insertion port has a size through which at least the connecting pin passes.   A second joint mounting lower case is housed in the suction joint mounting case, and the lead wire leads the lead wire along one side surface and the bottom surface of the second joint mounting lower case. The vacuum cleaner according to claim 1 or 2, wherein guide means are provided.   The lead wire is routed for each suction joint assembly in which the first suction joint and the second suction joint are incorporated in the suction joint mounting case. The vacuum cleaner as described in. 5. The electric vacuum cleaner according to claim 1, further comprising a lock unit configured to lock the first suction joint and the second suction joint in a straight state with respect to the suction joint mounting case.

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