JP2018202055A - Extension pipe and vacuum cleaner using the same - Google Patents

Abstract

To provide an extension pipe light in weight, small in size and having high safety.SOLUTION: An extension pipe is structured so that a fiber-reinforced resin laminate sheet 18 made of a polyolefin-based resin and a resin support member 19 made of a resin having high compatibility with the fiber-reinforced resin laminate sheet 18 are formed into an almost cylindrical shape. The resin support member 19 is fused to the fiber-reinforced resin laminate sheet 18 by an integrally-molding construction method including insert molding. The end part of the resin support member 19 is provided with a connection part 44 to which a suction tool (not shown in Fig) sucking dust can be connected. The cylindrical part forming a ventilation path can be composed of a resin having high compatibility with the fiber-reinforced resin laminate sheet made of the polyolefin-based resin having specific gravity relatively small even in resins, so as to have physical strength against flexure and attain reduction in weight. Also, the cylindrical part forming the ventilation path and the connection part 44 are integrally molded, so as to simplify the structure.SELECTED DRAWING: Figure 4

Description

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

  Conventionally, as an extension pipe of this type, a cylindrical part forming an air passage is made of a metal material such as an aluminum material, and a hose connected to a vacuum cleaner and a connection part with a suction body are arranged as separate members. A configuration has been proposed (see, for example, Patent Document 1).

  FIG. 9 is a side view of a conventional extension pipe described in Patent Document 1. In FIG. 9, a conventional extension tube 202 is made of an aluminum material and forms a ventilation path (not shown), and a suction portion connected to a suction portion 201 whose one end sucks dust on the surface to be cleaned. It is comprised from the hose connection part 206 connected to the hose 203 connected with the connection part 205 and the electric blower (not shown) incorporated in the vacuum cleaner main body (not shown) of a vacuum cleaner (not shown). In addition, each of the suction tool connecting portion 205 and the hose connecting portion 206 is fitted and fixed to a fitting portion 207 formed in the cylindrical portion 204.

Japanese Patent Laid-Open No. 6-54784

  However, the conventional extension pipe still has room for improvement from the viewpoint of improving the usability of the vacuum cleaner.

  That is, in the conventional extension pipe, the cylindrical portion 204 forming the air passage is made of an aluminum material having a larger specific gravity than a general resin, and the mass is increased. Moreover, since it is necessary to fit the cylindrical part 204 and the suction tool 201 or the hose 203 forming the ventilation path via the suction tool connection part 205 or the hose connection part 206, the structure for forming the fitting part becomes complicated. There is a problem that the size is increased and the mass is increased.

  Further, since parts of different materials are fitted, when an external force is applied to the extension pipe 202, the cylindrical portion 204 forming the air passage and the connecting portion that can connect the suction tool 201 or the hose 203 are disengaged, and the air However, there was a problem that the cylindrical portion 204 and the connecting portion were separated from each other.

  The present invention has been made in view of the problems of the prior art, and an object thereof is to provide a lightweight, small, highly safe extension tube and a convenient vacuum cleaner.

In order to solve the above-mentioned conventional problems, the extension pipe of the present invention includes a fiber reinforced resin laminated sheet made of polyolefin resin, and a resin support member made of a resin having high affinity with the fiber reinforced resin laminated sheet, The fiber reinforced resin laminate sheet and the resin support member are configured to have a substantially cylindrical shape, and the resin support member is fused to the fiber reinforced resin laminate sheet by an integral molding method including insert molding, and the resin It is equipped with a connection part that can connect a suction tool that sucks dust at the end of the support member, and is compatible with fiber reinforced resin laminated sheets and fiber reinforced resin laminated sheets made of polyolefin resin with relatively low specific gravity among resins Since the cylindrical part which forms a ventilation path can be comprised with high resin, weight reduction can be achieved, ensuring the physical strength with respect to a bending. In addition, since the cylindrical portion forming the air passage and the connecting portion to which the suction tool for sucking dust is connected are integrally formed, the structure is simplified and the weight can be reduced without increasing the size. Furthermore, since the cylindrical portion and the connecting portion are not separated, a highly safe extension tube can be provided.

  Moreover, the vacuum cleaner of this invention has the extension pipe of any one of Claims 1-7, and is easy to use electricity by using a lightweight, small and highly safe extension pipe. Can provide a vacuum cleaner.

  According to the extension pipe of the present invention, it is possible to configure a fiber reinforced resin laminated sheet made of polyolefin resin having a relatively low specific gravity among the resins and a cylindrical part that forms an air passage with a resin having high affinity with the fiber reinforced resin laminated sheet. Therefore, the weight can be reduced while ensuring the physical strength against bending. In addition, since the cylindrical portion forming the air passage and the connecting portion to which the suction tool for sucking dust is connected are integrally formed, the structure is simplified and the weight can be reduced without increasing the size. Furthermore, since the cylindrical portion and the connecting portion are not separated, a highly safe extension tube can be provided. Further, by using this extension tube for a vacuum cleaner, it is possible to provide an easy-to-use 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 the integrally molded part of the extension pipe Sectional view perpendicular to the central axis at the center of the extension tube Sectional drawing which shows the laminated structure of the fiber reinforced resin lamination sheet of the extension pipe Side view of a conventional extension pipe

  1st invention is equipped with the fiber reinforced resin laminated sheet which consists of polyolefin resin, and the resin support member which consists of resin with high affinity with the said fiber reinforced resin laminated sheet, The said fiber reinforced resin laminated sheet and the said resin support member And the resin support member is fused to the fiber reinforced resin laminated sheet by an integral molding method including insert molding, and sucks dust into the end of the resin support member. Cylindrical part that has a connection part to which tools can be connected, and forms a ventilation path with resin having high affinity with fiber reinforced resin laminated sheet and fiber reinforced resin laminated sheet made of polyolefin resin with relatively low specific gravity among resins Therefore, the weight can be reduced while ensuring the physical strength against bending. In addition, since the cylindrical portion forming the air passage and the connecting portion to which the suction tool for sucking dust is connected are integrally formed, the structure is simplified and the weight can be reduced without increasing the size. Furthermore, since the cylindrical portion and the connecting portion are not separated, a highly safe extension tube can be provided.

  In the second invention, in particular, the resin support member of the first invention is fused to both ends of the fiber reinforced resin laminated sheet by an integral molding method, and a connection portion that can connect the suction tool to the end portion of one resin support member is provided. The second resin supporting member is provided with a second connecting portion that can be connected to the vacuum cleaner main body or a hose connected to the vacuum cleaner main body at the end of the other resin supporting member. Since the second connection portion is integrally formed with the resin support member, there is no part fitting portion in the air passage, and the structure is simplified, and the weight can be reduced without increasing the size.

  In the third invention, in particular, the resin support member of the first or second invention is composed of a polyolefin resin, and both the fiber reinforced resin laminated sheet and the resin support member are formed of a polyolefin resin. Therefore, there is affinity at the joint, and it is possible to prevent separation of the joint portion of the cylindrical portion composed of the fiber-reinforced resin laminated sheet and the resin support member forming the air passage. Further, it is possible to prevent separation of the joint portion of the connecting portion constituted by the cylindrical portion forming the air passage and the resin support member, and it is possible to provide a highly safe extension pipe.

  In the fourth aspect of the invention, in particular, at least one through hole is arranged at both ends of the cylindrical fiber-reinforced resin laminated sheet of any one of the first to third aspects of the invention, and at the time of integral molding with the resin support member The melted resin is configured to enter the through hole, and the resin of the resin support member that has entered the through hole provided in the fiber reinforced resin laminated sheet becomes a resistance from the central axis direction of the cylindrical portion, and the air passage is formed. It is possible to prevent the joining portion of the connecting portion constituted by the cylindrical portion to be formed and the resin support member from being separated, and to provide a highly safe extension pipe.

  In the fifth invention, in particular, a thin-walled portion having a thin thickness is provided on the outer periphery of the fiber-reinforced resin laminated sheet according to any one of the first to fourth inventions, and the resin thickness of the resin support member in the thin-walled portion is increased. Because the joint strength of the outer periphery of the fiber reinforced resin laminate sheet increases and the rigidity against peeling also increases, the joint portion of the fiber reinforced resin laminate sheet forming the air passage and the cylindrical portion composed of the resin support member is separated. Can be prevented. Further, it is possible to prevent separation of the joint portion of the connecting portion constituted by the cylindrical portion forming the air passage and the resin support member, and it is possible to provide a highly safe extension pipe.

  In particular, the sixth aspect of the invention includes an extension portion extending in the axial direction at both ends of the substantially cylindrical shape of the fiber-reinforced resin laminated sheet according to any one of the first to fifth aspects, and includes a resin support member. A cylindrical portion that forms a ventilation path in order to reduce the burden on the boundary between the fiber reinforced resin laminated sheet and the resin support member having different rigidity when the connected connection portion receives an external force perpendicular to the central axis direction of the cylindrical portion; It can prevent that the junction part of the connection part comprised with the resin support member isolate | separates, and can provide a highly safe extension pipe | tube.

  In the seventh invention, in particular, a fabric layer is arranged on the inner surface of a fiber reinforced resin laminated sheet formed in a substantially cylindrical shape with the resin support member of any one of the first to sixth inventions. Many minute irregularities are generated on the inner surface of the air passage, and the unevenness reduces the contact area of the sucked relatively large dust etc. to the inner surface of the air passage and reduces the resistance when sucking relatively large dust etc. Thus, clogging of the inner surface of the air passage such as relatively large dust can be prevented.

  An electric vacuum cleaner according to an eighth aspect of the present invention has the extension pipe according to any one of claims 1 to 7, and is easy to use by using a lightweight, small and highly safe extension pipe. Can provide a vacuum cleaner.

  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. FIG. 5 is an exploded view of the extension tube, FIG. 6 is an exploded view of an integrally molded part of the extension tube, and FIG. Sectional drawing perpendicular to the central axis in the central portion of the extension pipe, FIG. 8 is a cross-sectional view showing the laminated configuration of the fiber reinforced resin laminated sheet 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 is
A vacuum cleaner main body 1 incorporating an electric blower (not shown) for generating suction air, a suction tool 2 for sucking dust on the surface to be cleaned, and an extension pipe 3 of the present invention having one end connected to the suction tool 2 The hose 4 has one end connected to the extension pipe 3 and the other end connected to the cleaner body 1.

  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 one end connected to the suction pipe 5 and one end connected to the tip pipe 7. The 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 a fitting that fits into a groove (not shown) provided in the cleaner body 1 in the housed state. The second cover body 13 having the joint portion 14, the third cover body 15 covering the connection pin 16 electrically connected to the hose 4, and the third cover body 15 with respect to the central axis of the pipe body 10 It is comprised from the 4th cover body 17 arrange | positioned oppositely.

  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. 6, the fiber reinforced resin laminated sheet 18 is formed in a substantially perfect circle shape. The resin support member 19 includes a rod-like portion into which a wire holding member 21 that houses a wire 20 described later is fitted, a connection portion 44 to which the suction pipe 5 can be connected to one end of the resin support member 19, and the resin support member 19. The three points of the second connecting portion 45 to which the tip pipe 7 can be connected at the end are formed by integral molding. And the rod-shaped part of the resin support member 19 is formed extending in the direction of the central axis at both ends of the fiber reinforced resin laminated sheet 18.

  Further, the wire holding member 21 is formed in a shape that accommodates a wire rod 20 made of a copper-plated piano wire on the lower side in FIG. 6, and is fitted to the rod-shaped portion of the resin support member 19 in a state in which the wire rod 20 is accommodated. It is configured to fit. Thus, the wire 20 is sandwiched and held between the rod-shaped portion of the resin support member 19 and the wire holding member 21.

  In the center of the lower part of the substantially circular fiber reinforced resin laminate sheet 18, there is a slit portion 46, which is a notch hole formed extending in the direction of the central axis at both ends of the fiber reinforced resin laminate sheet 18. The bar-shaped portion of the support member 19 is provided with an allowable length.

  And the slit which provided the unit which made the state which hold | maintained the wire 20 between the rod-shaped part of the resin support member 19 and the wire holding member 21 in the center of the lower part of the substantially perfect circular fiber reinforced resin lamination sheet 18 By expanding the portion 46, the fiber reinforced resin laminated sheet 18 having a substantially circular shape can be accommodated. Furthermore, the pipe body 10 is formed by integrally molding in such a state of being housed.

  In the state shown in FIG. 7, the unit in which the wire 20 is held between the rod-shaped portion of the resin support member 19 and the wire holding member 21 is accommodated in the substantially circular fiber-reinforced resin laminated sheet 18. FIG. 2 shows an integrally molded cross section after the above state.

  That is, as shown in FIGS. 4 to 7, the substantially cylindrical pipe body 10 includes a substantially circular fiber-reinforced resin laminated sheet 18 made of polyolefin resin, a resin support member 19 made of 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. 7, the wire holding member 21 is provided with a groove portion 28 that can accommodate 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, the wire holding member 21 is provided with a plurality of welding ribs 29 provided around the groove portion 28, and is fixed to the groove portion 28 by being welded while the wire material 20 is housed in the groove portion 28. Has been.

  As shown in FIG. 7, the boundary part 43 of the fiber reinforced resin lamination sheet 18 is arrange | positioned at the vertically lower side. Moreover, the boundary part 43 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 side of the boundary portion 43 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 43 of the resin laminated sheet 18 is simultaneously bonded with the resin of the resin support member 19 to be bonded. 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. 6 and FIG. 7, all the outer peripheral end portions of the fiber reinforced resin laminated sheet 18 on the outer surface in the vertical direction from the central axis of the pipe body 10 have been C-plane cut processed and C-plane cut processed. A resin support member 19 is disposed so as to cover the entire outer periphery 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 FIG. 8, the fiber reinforced resin laminated sheet 18 has a laminated configuration of a fiber reinforced layer 32 and a cover layer 33. The fiber reinforced layer 32 includes a core layer 34, fabric layers 35a and 35b, adhesive layers 36a, 36b, and 36c. The cover layer 33 includes a transparent layer 37, a colored layer 38, a transparent protective layer 39, and the like. Specifically, the fiber reinforced layer 32 of the fiber reinforced resin laminated sheet 18 is configured by bonding the fabric layer 35a and the fabric layer 35b to both surfaces of the core layer 34 via the adhesive layer 36a and the adhesive layer 36b. .

  The core layer 34 of the fiber reinforced layer 32 is made of, for example, a resin mainly composed of polypropylene, and is laminated in a sheet shape or a film shape. The core layer 34 is preferably made of, for example, a non-foamed polypropylene sheet. This is because, in the non-foamed polypropylene sheet, the laminated layers are not easily crushed during press molding. Further, the non-foamed polypropylene sheet can be easily formed by vacuum forming or bending forming utilizing thermal deformation.

The woven fabric layer 35a and the woven fabric layer 35b of the fiber reinforced layer 32 are formed of, for example, a core-sheath composite fiber yarn in which the core component is a polypropylene resin and the sheath component is a polyolefin resin having a melting point lower than that of the core component. By making the sheath component a polyolefin resin component having a low melting point, heat adhesion is facilitated. The fabric of the fabric layer 35a and the fabric layer 35b may be a fabric having any structure such as plain weave, twill weave (oblique fabric), satin weave, and other changed weaves.

  The adhesive layers 36a, 36b, 36c of the fiber reinforced layer 32 are made of, for example, a transparent heat-sealable polyolefin film. As a result, the core layer 34 can be bonded to the fabric layer 35a and the fabric layer 35b by heat and pressure. As a result, the fiber-reinforced layer 32 can be easily laminated and integrated.

  The fiber reinforced resin laminated sheet 18 is formed by integrating the cover layer 33 on one surface layer of the fiber reinforced layer 32 via the adhesive layer 36c. At this time, the cover layer 33 is preferably made of, for example, a transparent polyolefin resin sheet.

  That is, it is preferable that the cover layer 33 has transparency that allows the fabric layer 35a to be seen through the outside. By seeing the fabric layer 35a from the outside, the fiber-reinforced resin laminated sheet 18 looks high in strength. Furthermore, the beautiful appearance of the fiber reinforced resin laminated sheet 18 can be kept high.

  Specifically, the cover layer 33 is configured by laminating a transparent layer 37 of a polypropylene resin sheet, a colored layer 38, and a protective layer 39 of a polypropylene resin sheet. By putting the thin colored layer 38 between the protective layer 39 and the transparent layer 37, it is possible to make the fabric layer 35a of the white fiber reinforced layer 32 look a dyed texture.

  That is, in the fiber reinforced resin laminated sheet 18 of the pipe body 10 of the extension pipe 3 in the present embodiment, first, the fabric layer 35a, the adhesive layer 36a, 36b on both surfaces of the core layer 34 of the fiber reinforced layer 32, 35b is bonded and integrated. Thereby, the fiber reinforced layer 32 is formed. Next, the transparent layer 37, the colored layer 38, and the protective layer 39, which form the cover layer 33, are laminated and integrated on the surface of the fabric layer 35a of the fiber reinforced layer 32 via the adhesive layer 36c. Thereby, the fiber reinforced resin laminated sheet 18 is formed.

  Note that the transparent layer 37, the colored layer 38, and the protective layer 39 may be laminated and integrated in advance as the cover layer 33. In this case, the integrated cover layer 33 is laminated and integrated with the fiber reinforced layer 32 via the adhesive layer 36c. Thereby, the fiber reinforced resin laminated sheet 18 is formed.

  As shown in FIG.4 and FIG.5, the 1st cover body 11 is arrange | positioned so that the pipe body 10 may cover the end surface of the connection side with the suction tool pipe 5, and the vertical upper side of the resin support member 19, The pipe body 10 and the first cover body 11 are coupled to each other by a screw 41 and an engaging portion 11 a provided on the first cover body 11.

  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. Further, 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 tool pipe 5, and the connection terminal 24 is stored and held.

The second cover body 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 41, and the double-sided tape 25, and the second cover. The first cover body 11 is engaged with an engaging portion 13 a provided on the body 13. Moreover, the 2nd cover body 13 is provided with the fitting part 14 fitted with the cleaner body 1 in the accommodation state.
The wire 20 covered with the second cover body 13 is soldered to a lead wire 24a connected to the connection terminal 24, and the lead wire 24a is a first wiring rib 26a provided on the pipe body 10. Wired to

  A third cover body 15 is disposed on the pipe body 10 so as to cover the end face 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 third cover body 15. Are connected by a screw 41. 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 fourth cover body 17 disposed on the opposite side of the third cover body 15 with respect to the central axis of the pipe body 10 is coupled to the pipe body 10 by screws 41 and is provided on the fourth cover body 17. The engaged portion 17a is engaged with the third cover body 15. Further, the wire 20 covered with the fourth cover body 17 is solder-connected 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 extension pipe 3 in the present embodiment configured as described above will be described below.

  When the user connects the suction tool 2, the extension pipe 3, and the hose 4 and starts cleaning using the electric vacuum cleaner 100, suction air is generated by an electric blower (not shown). 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). .

  As described above, in the present embodiment, since the pipe body 10 that forms the air passage with the resin having high affinity with the fiber reinforced resin laminated sheet 18 made of polyolefin resin having a relatively small specific gravity among the resins can be configured. It is possible to reduce the weight while ensuring the physical strength against bending.

  In addition, since the resin support member 19 that can connect the pipe body 10 that forms the air passage through which dust passes and the suction tool 2 that sucks dust is insert-molded, the structure is simplified and the weight can be reduced without increasing the size. It can be planned. Furthermore, since the pipe body 10 and the resin support member 19 are not separated, the extension pipe 3 with high safety can be provided.

  Further, in the present embodiment, a resin support member 19 to which a suction tool 2 capable of sucking dust can be connected to one end of a pipe body 10 forming an air passage, and a hose 4 connected to the cleaner body 1 is connected to one end. Since each of the possible resin support members 19 is insert-molded, there is no part fitting part in the air passage, the structure is simplified, and the weight can be reduced without increasing the size.

  Furthermore, since both the fiber reinforced resin laminate sheet 18 and the resin support member 19 are formed of a polyolefin resin, the fiber reinforced resin laminate sheet 18 and the resin support member 19 that have an affinity at the joint and form an air passage are used. It can prevent that the junction part of the comprised pipe body 10 isolate | separates.

  Furthermore, it is possible to prevent the joint portion of the connecting portion formed by the pipe body 10 and the resin support member 19 forming the ventilation path from being separated, and to provide the extension pipe 3 with high safety. is there.

  Further, in the present embodiment, the resin of the resin support member 19 that has entered the through hole 30 provided in the fiber reinforced resin laminated sheet 18 becomes a resistance from the central axis direction of the pipe body 10 and forms a ventilation path. It is possible to prevent the joint portion of the connection portion formed by the pipe body 10 and the resin support member 19 from being separated, and to provide the extension tube 3 with high safety.

  Further, in the present embodiment, since the bonding strength of the outer periphery of the fiber reinforced resin laminated sheet 18 is increased and the rigidity against peeling is also increased, the fiber reinforced resin laminated sheet 18 and the resin support member 19 that form a ventilation path are configured. It is possible to prevent the joined portion of the pipe body 10 from being separated.

  Further, in the present embodiment, when the connecting portion constituted by the resin support member 19 receives an external force perpendicular to the central axis direction of the pipe body 10, the fiber reinforced resin laminate sheet 18 and the resin support member 19 having different rigidity are used. In order to reduce the burden on the boundary of the pipe, it is possible to prevent the joint portion of the connecting portion formed by the pipe body 10 and the resin support member 19 forming the air passage from being separated, and the extension pipe 3 having high safety. Can be provided.

  Furthermore, in the present embodiment, since the inner wall of the fiber reinforced resin laminated sheet 18 of the pipe body 10 that forms the air passage is formed by the fabric layer 35b, a large number of minute irregularities are formed on the inner surface that is in contact with dust. . This minute unevenness reduces the contact area of the sucked relatively large dust etc. to the inner surface of the air passage and reduces the resistance when sucking relatively large dust etc. It is possible to prevent clogging of the inner surface.

  Although not particularly illustrated, if a thin-walled portion having a small thickness is provided on the outer periphery of the fiber-reinforced resin laminated sheet 18 and the resin thickness of the portion corresponding to the thin-walled portion of the resin support member 19 is increased, the fiber-reinforced resin Since the bonding strength of the outer periphery of the laminated sheet 18 is increased and the rigidity against peeling is also increased, it is possible to prevent separation of the bonded portion of the cylindrical portion formed of the fiber reinforced resin laminated sheet 18 and the resin support member 19 forming the air passage. can do. Furthermore, it is possible to prevent the joint portion of the connecting portion formed by the cylindrical portion forming the air passage and the resin support member 19 from separating, and it is possible to provide a highly safe extension pipe.

  Moreover, the vacuum cleaner 100 which is excellent in operability and is easy to use can be provided by using the lightweight, small, and highly safe extension pipe 3 in the above embodiment for the vacuum cleaner 100.

  As described above, the extension pipe according to the present invention has a simplified structure, can ensure physical strength, can be reduced in weight without becoming large, and has excellent safety. It is possible to provide a vacuum cleaner that is easy to use, and can be suitably applied to the fields and applications of household vacuum cleaners and industrial vacuum cleaners as well as various extension pipes.

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 Intake port 10 Pipe body 11 1st cover body 11a, 13a, 17a Engagement part 12 Buckle 13 Second Cover body 14 fitting portion 15 third cover body 16 connection pin 16a, 24a lead wire 17 fourth cover body 18 fiber reinforced resin laminated sheet 19 resin support member 20 wire material 21 wire material holding member 22 buckle spring 23 terminal housing portion 24 connecting terminals 25 double-sided tape 26a first wiring ribs 26b second wiring ribs 27 terminal storing and holding parts 28 grooves 29 welding ribs 30 through holes 31 extension parts 32 fiber reinforced layers 33 cover layers 34 core layers 35a and 35b textile layers 36a, 36b, 36c Adhesive layer 37 Transparent layer 38 Colored layer 39 Protective layer 41 Screw 43 Boundary part 44 45 Connecting part 46 Slit part 100 Vacuum cleaner

Claims (8)

A fiber reinforced resin laminate sheet made of polyolefin resin and a resin support member made of a resin having high affinity with the fiber reinforced resin laminate sheet, and the fiber reinforced resin laminate sheet and the resin support member are substantially cylindrical. The resin support member is fused to the fiber reinforced resin laminated sheet by an integral molding method including insert molding, and a connection part to which a suction tool for sucking dust can be connected to the end of the resin support member With extension tube. A resin support member is fused to both ends of the fiber reinforced resin laminated sheet by an integral molding method, and a connection portion that can connect a suction tool to one end of one resin support member, and a vacuum cleaner body to the end of the other resin support member Or the extension pipe | tube of Claim 1 provided with the 2nd connection part which can be connected to the hose connected to the said vacuum cleaner main body, respectively. The extension pipe according to claim 1 or 2, wherein the resin support member is made of a polyolefin-based resin. The at least 1 or more through-hole is arrange | positioned in the both ends of the substantially cylindrical fiber reinforced resin lamination sheet, and it was comprised so that the resin melt | dissolved at the time of integral molding with the resin support member may enter into the said through-hole. The extension tube according to any one of the above. The extension pipe according to any one of claims 1 to 4, wherein a thin portion having a small thickness is provided on an outer periphery of the fiber reinforced resin laminated sheet, and a resin thickness of the resin support member in the thin portion is increased. The extension pipe according to any one of claims 1 to 5, further comprising extensions extending in the axial direction at both ends of the substantially cylindrical shape of the fiber reinforced resin laminated sheet. The extension pipe according to any one of claims 1 to 6, wherein a fabric layer is disposed on an inner surface of a fiber-reinforced resin laminated sheet formed in a substantially cylindrical shape with a resin support member. The vacuum cleaner which has an extension pipe given in any 1 paragraph of Claims 1-7.

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