JP2019013385A - Extension pipe and vacuum cleaner using the same - Google Patents

Abstract

To provide an extension pipe reduced in weight and enhanced in design flexibility.SOLUTION: An extension pipe 3 one end of which is connected to a grip part (not shown) fitted to the edge part of a hose (not shown) communicated and connected to a cleaner body (not shown) of a vacuum cleaner (not shown) and another end of which is connected to a suction tool (not shown) includes a locking tool 13 having a locking part 14 which is locked on a part to be locked (not shown) provided on the vacuum cleaner body when the vacuum cleaner is housed in a standing posture. The locking tool 13 is configured such that a cross section in a longitudinal axis direction of the extension pipe 3 is formed in an approximately semicircular arc shape and also the semicircular arc surface of the locking tool 13 can be fastened to the side surface side of the extension pipe 3, and thereby eliminating the need to assemble the locking tool 13 so as to cover the extension pipe 3 from the end part thereof. As a result, the configuration/shape of the extension pipe 3 is hardly restricted, and the weight thereof can be reduced in comparison with a conventional cylindrical locking tool because the cross section of the locking tool 13 is formed in a semicircular arc shape.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an extension tube used in a vacuum cleaner or the like and a vacuum cleaner.

  In the conventional vacuum cleaner storage method, the main body of the vacuum cleaner is placed on the floor surface, the locking portion of the extension pipe is fitted to the locked portion provided on the vacuum cleaner body, and the floor surface is fitted. On the other hand, there is a stand storage for storing the vacuum cleaner so that the extension pipe stands upright.

  In the above-mentioned storage state, when the extension tube is rolled, a very large force is applied to the locking portion of the extension tube. In order not to cause parts detachment due to this, a conventional locking tool having a locking portion of an extension pipe is formed so as to cover at least a part of the extension pipe, and a sufficient fastening force with the extension pipe is ensured. (For example, refer to Patent Document 1).

JP 2001-346741 A

  However, in the conventional extension tube described in Patent Document 1 described above, since the locking tool having the locking portion is formed so as to cover the extension pipe, the mass of the locking tool is increased, and the extension pipe is There was a problem of becoming heavy. Moreover, in order to assemble so that a locking tool may be covered from the edge part of an extension pipe | tube, the subject that the shape of the location covered with a locking tool was also limited occurred.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object of the present invention is to provide an extension pipe that is not limited in configuration and shape, and that can be reduced in weight, and a vacuum cleaner that is easy to use.

  In order to solve the above-described conventional problems, one end of the extension pipe of the present invention is connected to a handle portion provided at an end portion of a hose connected to a vacuum cleaner body of a vacuum cleaner, and the other end is a suction tool. In the extension pipe connected to the vacuum cleaner, the extension pipe includes a locking tool having a locking portion that is locked to a locked portion provided in the vacuum cleaner body when the stand of the vacuum cleaner is stored. The locking tool is configured such that a cross section in the longitudinal axis direction of the extension tube is formed in a substantially semicircular arc shape, and a semicircular arc surface of the locking tool can be fastened to a side surface side of the extension pipe. Since it is not necessary to assemble the locking tool so as to cover the end portion of the extension pipe, the configuration and shape of the extension pipe are hardly limited at the location where the extension pipe is covered with the conventional locking tool. In addition, compared with a latch having a cylindrical cross section that covers a conventional extension tube, the cross section of the latch has a semicircular arc shape, so that it can be made lighter than a conventional extension tube.

  Moreover, the vacuum cleaner of this invention uses the extension pipe of any one of Claims 1-4, and provides an easy-to-use vacuum cleaner by using the extension pipe reduced in weight. can do.

Since the extension pipe of the present invention does not need to be assembled so that the locking tool covers the end of the extension pipe, the configuration and shape of the extension pipe are unlikely to be limited at locations where the extension pipe is conventionally covered with the locking tool. Become. Moreover, compared with the latching tool with a cylindrical cross section which covers the conventional extension pipe | tube, it can reduce in weight by making a latching tool cross section into a semicircular arc shape. And an easy-to-use vacuum cleaner can be provided by using this extension pipe for a vacuum cleaner.

The right view of the vacuum cleaner using the extension pipe in Embodiment 1 of this invention Perspective view of the extension tube Right side view of the extension pipe Sectional view from the right side of the central axis of the cylinder Exploded view of the extension pipe Exploded view of connecting part of the extension pipe (floor suction tool side) Exploded view of the integrally molded part of the extension pipe Sectional view perpendicular to the central axis at the center of the extension tube

  1st invention is an extension pipe in which one end is connected to the handle part provided in the end part of the hose connected to the vacuum cleaner main body of the vacuum cleaner, and the other end is connected to the suction tool. Comprises a locking tool having a locking part that is locked to a locked part provided in the vacuum cleaner body when the stand of the electric vacuum cleaner is housed, and the locking tool is a longitudinal axis of the extension pipe The cross section in the direction is formed in a substantially semicircular arc shape, and the semicircular arc surface of the locking tool can be fastened to the side surface side of the extension pipe so that the locking tool is covered from the end of the extension pipe. Therefore, it is difficult to limit the configuration and shape of the extension tube at a location where the extension tube is covered with a conventional locking tool. In addition, compared with a latch having a cylindrical cross section that covers a conventional extension tube, the cross section of the latch has a semicircular arc shape, so that it can be made lighter than a conventional extension tube.

  In the second invention, in particular, the locking device of the first invention is fastened to the extension pipe with a screw, and by using the screw, the component of the locking device can be easily replaced. A sufficient fastening force between the locking tool and the extension tube can be ensured.

  In the third invention, in particular, when the locking device of the second invention is fastened to the extension pipe, the fitting reinforcement by the claw configuration is added, and the fastening strength is further increased by adding the claw fitting, The size of the locking tool itself can be reduced. As a result, the mounting area of the extension pipe is reduced, and the configuration and shape of the extension pipe are not easily limited. Further, the weight of the locking tool can be further reduced. Moreover, positioning becomes easy by the claw fitting, and the assembly accuracy can be improved.

  In the fourth aspect of the invention, in particular, when fastening the locking device of the second or third aspect of the invention to the extension pipe, fastening reinforcement by using a double-sided tape or an adhesive is added. By adding the wear, the fastening strength (especially the fastening strength against torsion) can be further increased, and the size of the locking tool itself can be reduced. As a result, the mounting area of the extension pipe is reduced, and the configuration and shape of the extension pipe are limited, making it difficult. Further, the weight of the locking tool can be further reduced.

  A vacuum cleaner according to a fifth aspect of the present invention uses the extension pipe according to any one of claims 1 to 4, and a vacuum cleaner that is easy to use by using a lightened extension pipe. Can be provided.

  Hereinafter, preferred embodiments of the extension pipe of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 is a right side view of a vacuum cleaner using an extension pipe in Embodiment 1 of the present invention, FIG. 2 is a perspective view of the extension pipe, FIG. 3 is a right side view of the extension pipe, and FIG. Is a cross-sectional view from the right side surface of the substantially cylindrical central axis of the extension tube, FIG. 5 is an exploded view of the extension tube, and FIG. 6 is an exploded view of the connection portion (floor suction tool side) of the extension tube. 7 is an exploded view of an integrally molded part of the extension pipe, and FIG. 8 is a cross-sectional view perpendicular to the central axis at the center of the extension pipe.

  As shown in FIG. 1, the vacuum cleaner 100 to which the extension pipe 3 in the present embodiment is connected includes a cleaner body 1 containing an electric blower (not shown) that generates suction air, and a surface to be cleaned. A suction tool 2 for sucking dust, an extension pipe 3 of the present invention having one end connected to the suction tool 2, and a hose 4 having one end connected to the extension pipe 3 and the other end connected to the cleaner body 1 Has been.

  The suction tool 2 includes a rotating brush (not shown) that scrapes dust on the surface to be cleaned, and an electric motor (not shown) that drives the rotating brush (not shown) to rotate, and a suction tool pipe that transfers dust. The suction tool 2 and the extension pipe 3 are detachably connected via the suction tool pipe 5.

  Further, a tip pipe 7 having a handle portion 6 that is held when the user cleans is provided at the end portion of the hose 4 on the side of the extension tube 3. The hose 4 is detachably connected. Further, a connection pipe 8 is provided at the end of the hose 4 on the cleaner body 1 side, and the inlet 9 and the hose 4 of the cleaner body 1 are detachably connected via the connection pipe 8. ing.

  As shown in FIGS. 2 and 3, the extension pipe 3 has a connection portion 34 described later that can be connected to the suction pipe 5 at one end and a second connection portion described later that can be connected to the tip pipe 7 at the other end. 35, a substantially cylindrical pipe body 10, a first cover body 11 that covers the buckle 12 that engages with the suction tool pipe 5 when connected to the suction tool 2, and the vacuum cleaner main body 1 in the housed state. A second cover body 15 that covers a locking tool 13 having a locking portion 14 that fits into a grooved locked portion (not shown) and a connection pin 16 that is electrically connected to the hose 4. And a third cover body 17 disposed opposite to the second cover body 15 with respect to the central axis of the pipe body 10.

  Here, with respect to the extension tube 3, when using the vacuum cleaner 100 in the direction perpendicular to the central axis of the substantially cylindrical shape, the user can see the direction that the user can see vertically upward. The direction that cannot be defined is defined as the vertically downward direction.

  As shown in FIG. 7, the fiber reinforced resin laminated sheet 18 is formed in a substantially perfect circle shape. The resin support member 19 includes a rod-shaped portion 19b in which a wire holding member 21 that houses a wire 20 described later is fitted, a connection portion 34 that can connect the suction pipe 5 to one end of the resin support member 19, and a resin support member 19 Three portions of the other end of the second connecting portion 35 to which the tip pipe 7 can be connected to the other end are formed by integral molding. And the rod-shaped part 19b of the resin support member 19 is extended and formed in the center-axis direction of the both ends of the fiber reinforced resin lamination sheet 18. As shown in FIG.

  Further, the wire holding member 21 is formed in a shape that accommodates a wire 20 made of a copper wire plated with copper on the lower side in FIG. 7, and in a state in which the wire 20 is accommodated, It is comprised so that it may fit. Thus, the wire 20 is sandwiched and held between the rod-shaped portion 19b of the resin support member 19 and the wire holding member 21.

  As shown in FIG. 8, a cutout hole formed in the center of the lower side of the substantially circular fiber reinforced resin laminated sheet 18 is formed by extending in the direction of the central axis at both ends of the fiber reinforced resin laminated sheet 18. A certain slit portion 36 is provided with a length that allows the rod-shaped portion 19 b of the resin support member 19.

And the unit which made the state which hold | maintained the wire 20 between the rod-shaped part 19b of the resin support member 19 and the wire holding member 21 was provided in the center of the lower side part of the substantially perfect circular fiber reinforced resin lamination sheet 18. By expanding the slit portion 36, the slit portion 36 can be accommodated in the substantially circular fiber-reinforced resin laminated sheet 18. Furthermore, the pipe body 10 is formed by integrally molding in such a state of being housed.

  The state shown in FIG. 8 is a unit in which the wire 20 is held between the rod-like portion 19b of the resin support member 19 and the wire holding member 21 inside the substantially circular fiber-reinforced resin laminated sheet 18. FIG. 2 shows an integrally molded cross section after the housed state.

  That is, as shown in FIGS. 4 to 8, the substantially cylindrical pipe body 10 includes a substantially circular fiber-reinforced resin laminated sheet 18 made of a polyolefin resin, a resin support member 19 made of a polyolefin resin, and copper. It consists of a wire 20 made of plated piano wire and a wire holding member 21 made of polyolefin resin. The fiber reinforced resin laminated sheet 18, the resin support member 19, the wire 20 and the wire holding member 21 are integrally formed by insert molding. Thus, the pipe body 10 is completed.

  Next, the above-described process will be described in detail. As shown in FIG. 8, the wire holding member 21 is provided with a groove 28 that can store the wire 20 in a direction perpendicular to the central axis of the pipe body 10, and insert molding is performed. Before performing, the wire 20 is accommodated in the groove portion 28 of the wire holding member 21. Further, a plurality of welding ribs 29 are provided around the groove portion 28 of the wire rod holding member 21, and the wire rod 20 is fixed in the groove portion 28 by being welded while being housed in the groove portion 28. .

  As shown in FIG. 8, the boundary portion 33 of the fiber reinforced resin laminated sheet 18 is arranged on the vertically lower side. Moreover, the boundary part 33 of the fiber reinforced resin laminated sheet 18 is joined by pouring the resin of the resin support member 19 at the time of insert molding. Further, on the boundary portion 33 side of the fiber reinforced resin laminated sheet 18, the wire 20 and the wire holding member 21 are arranged parallel to the central axis of the pipe body 10 and on the inner surface side of the fiber reinforced resin laminated sheet 18, The boundary portion 33 of the resin laminated sheet 18 is simultaneously bonded with the resin of the resin support member 19. The tip portions at both ends of the wire rod 20 are bent in a direction perpendicular to the central axis of the pipe body 10.

  As shown in FIG.7 and FIG.8, regarding the surface of the fiber reinforced resin laminated sheet 18 on the outer side in the vertical direction from the center axis of the pipe body 10, all the outer peripheral end portions have been subjected to the C surface cutting process, and the C surface cutting process has been performed. A resin support member 19 is arranged so as to cover the entire outer periphery of both ends of the fiber reinforced resin laminated sheet 18.

  Further, the fiber reinforced resin laminated sheet 18 has a plurality of through holes 30 formed in the vertical direction from the central axis of the pipe body 10 on the vertical upper side of both ends of the pipe body 10 in the central axis direction. The resin of the resin support member 19 flows into the through hole 30.

  Furthermore, the fiber reinforced resin laminated sheet 18 is provided with an extension portion 31 in which both end portions in the central axis direction of the pipe body 10 are partially extended only in the vertical upper side, and the extension portion 31 extends vertically from the center axis of the pipe body 10. All the surfaces on the direction side are configured to be covered with the resin support member 19.

  As shown in FIGS. 4, 5, and 6, the first cover body 11 is disposed on the pipe body 10 so as to cover the end surface on the connection side with the suction pipe 5 and the vertical upper side of the resin support member 19. The pipe body 10 and the first cover body 11 are engaged by the engagement between the screw 32 and the engagement portion 11a provided on the first cover body 11 and the engagement portion 19a provided on the resin support member 19. Are combined.

  Between the central axis of the pipe body 10 and the first cover body 11, a buckle 12 that engages with the suction tool pipe 5 when connecting to the suction tool 2 is rotatably arranged. A buckle spring 22 is disposed between the buckles 12. In addition, a terminal storage portion 23 is provided on the end surface of the pipe body 10 on the vertical upper side and on the connection side with the suction pipe 5, and the connection terminal 24 is stored and held therein.

  The locking tool 13 disposed on the opposite side of the first cover body 11 with respect to the central axis of the pipe body 10 is coupled to the pipe body 10, the screw 32 and the double-sided tape 25, and is provided on the locking tool 13. The engaged portion 13 a is engaged with an engaging portion 11 b provided on the first cover body 11.

  In the present embodiment, the engaging portion 13 a and the engaging portion 11 b are engaged with each other by claw fitting, and the locking tool 13 is attached to the bottom center side of the extension tube 3.

  In addition, the locking tool 13 includes a locking portion 14 that fits with the cleaner body 1 in the stand storage state in which the cleaner body 1 is erected. Further, an adhesive (not shown) may be used in place of the double-sided tape 25 as a reinforcing material when the locking tool 13 is coupled to the pipe body 10.

  The wire 20 covered with the locking tool 13 is solder-connected to the lead wire 24a connected to the connection terminal 24, and the lead wire 24a is wired to the first wiring rib 26a provided in the pipe body 10. Has been.

  A second cover body 15 is disposed on the pipe body 10 so as to cover the end surface on the connection side with the tip pipe 7 and the vertical upper side of the resin support member 19, and the pipe body 10 and the second cover body 15. Are connected by a screw 32. Further, a terminal storage holding portion 27 is provided on the end surface of the pipe body 10 on the vertical upper side and on the connection side with the tip pipe 7, and the connection pin 16 is stored and held.

  The third cover body 17 disposed on the opposite side of the second cover body 15 with respect to the central axis of the pipe body 10 is coupled to the pipe body 10 with a screw 32 and is provided on the third cover body 17. The engaged portion 17 a is engaged with the second cover body 15. The wire 20 covered with the third cover body 17 is soldered to the lead wire 16a connected to the connection pin 16, and the lead wire 16a is a second wiring provided on the pipe body 10. It is wired to the rib 26b.

  The operation and action of the vacuum cleaner 100 connected to the extension pipe 3 in the present embodiment configured as described above are as follows.

  When the user connects the suction tool 2, the extension pipe 3, and the hose 4 connected to the cleaner body 1 and starts cleaning using the electric vacuum cleaner 100, suction air is generated by an electric blower (not shown). To do. The user can operate the suction tool 2 by gripping the handle portion 6, and dust on the surface to be cleaned is sucked together with air from the suction tool 2. Air containing dust sucked from the suction tool 2 flows into the cleaner body 1 through the extension pipe 3 and the hose 4, and then only dust is collected by a dust collector (not shown). .

  Since the locking tool 13 of the extension tube 3 in the present embodiment has a semicircular arc cross section, the cylindrical shape that covers the extension pipe as in the conventional locking tool. It does not have a cross section, and there is no need to assemble so that the locking tool can be covered from the end of the extension pipe.

  Therefore, since the configuration and shape of the extension tube 3 are not limited at the location of the extension tube 3 covered with the conventional locking tool, the configuration can be freely made and the appearance design can also be made freely.

  Further, the cross-section of the locking device 13 is made into a semicircular arc shape, and the weight can be reduced because there is no portion where the locking device covers the upper part of the extension pipe.

  The above invention is not limited to the contents of the above embodiments, and various modifications can be made within the scope of the claims.

  The extension tube according to the present invention is light in weight and easy to assemble without being limited in configuration and shape. By using this extension tube for a vacuum cleaner, it is possible to provide a vacuum cleaner that is easy to use. It can be applied to various vacuum cleaners regardless of home or business use.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 2 Suction tool 3 Extension pipe 4 Hose 5 Suction tool pipe 6 Handle part 7 Tip pipe 8 Connection pipe 9 Inlet 10 Pipe body 11 1st cover body 11a, 11b, 13a, 17a, 19a Engagement part 12 Buckle 13 Locking tool 14 Locking portion 15 Second cover body 16 Connection pin 16a, 24a Lead wire 17 Third cover body 18 Fiber reinforced resin laminated sheet 19 Resin support member 19b Bar-shaped portion 20 Wire material 21 Wire material holding member 22 Buckle Spring 23 Terminal storage portion 24 Connection terminal 25 Double-sided tape 26a First wiring rib 26b Second wiring rib 27 Terminal storage holding portion 28 Groove portion 29 Welding rib 30 Through hole 31 Extension portion 32 Screw 33 Boundary portion 34 Connection portion 35 First Connection part 2 36 Slit part 100 Vacuum cleaner

Claims (5)

One end is connected to a handle provided at an end of a hose connected to the vacuum cleaner body of the vacuum cleaner, and the other end is connected to a suction tool. The extension pipe is connected to the vacuum cleaner. When the stand is housed, a locking device having a locking portion that is locked to a locked portion provided in the vacuum cleaner body is provided, and the locking device has a substantially half cross section in the longitudinal axis direction of the extension tube. An extension tube that is formed in an arc shape and that allows the semicircular arc surface of the locking tool to be fastened to the side surface of the extension tube. The extension pipe according to claim 1, wherein the locking tool is fastened to the extension pipe with a screw. The extension pipe according to claim 2, wherein a fitting reinforcement by a claw configuration is added when fastening the locking tool to the extension pipe. The vacuum cleaner according to claim 2 or 3, wherein a fastening reinforcement by using a double-sided tape or an adhesive is added when fastening the locking tool to the extension pipe. The vacuum cleaner using the extension pipe | tube of any one of Claims 1-4.

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