TWI646936B - Tube with lead wire and electric vacuum cleaner provided with the same - Google Patents

Abstract

An object of the present invention is to provide a tube having a lead wire and an electric vacuum cleaner provided with the same, which are capable of reducing the weight and grip and improving the operability while suppressing the influence on the design.

A tube having a lead according to the present invention includes a tube body made of dry carbon fiber, and a lead provided along the longitudinal direction so as to be closely adhered to the tube body in an insulated state.

Description

Tube with lead wire and electric vacuum cleaner provided with the same

The present invention relates to a tube having a lead and an electric vacuum cleaner provided with the tube.

As an extension tube of a conventional electric vacuum cleaner, Patent Document 1 discloses an extension tube including a tube body, a cover member attached to the outside of the tube body and extending in a longitudinal direction, and an extension tube provided between the tube body and the cover member. The insulating resin plate of the gap and the lead wire supported on the insulating resin plate, both ends of the lead wire are exposed to the outside to be able to be electrically connected to the terminal portions of the cleaner body and the suction port body.

Patent Document 1: Japanese Patent Application Publication No. 2012-249699

As described in Patent Document 1, an extension pipe provided with an insulating resin plate, a lead, and a cover member along the long side of the outer surface of the pipe body becomes thicker, the weight of the entire extension pipe increases, and the grip of the extension pipe is impaired. As a result, In this case, there is a defect that the operability is reduced when the moving direction of the suction port body is operated through the extension tube. In addition, the influence on the appearance design of the extension pipe becomes larger.

The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a tube having a lead wire and an electric vacuum cleaner provided with the same, which are capable of reducing the weight and grip and improving the operability while suppressing the influence on the design.

Therefore, the pipe with a lead wire according to the present invention includes a pipe body made of dry carbon fiber, and a lead wire provided in the longitudinal direction so as to be closely adhered to the pipe body in an insulated state.

In addition, an electric vacuum cleaner according to another aspect of the present invention includes an extension tube having the tube with a lead wire, a suction port body connected to one end portion of the extension tube, and another end directly or indirectly connected to the extension tube. Vacuum cleaner body.

The tube with a lead wire of the present invention is suitable as an extension tube of an electric vacuum cleaner that connects the cleaner body and the suction port body, and can achieve the following effects (I) to (IV).

(I) Tubes with the same outer diameter can reduce the inner diameter loss caused by wiring.

(II) Other parts for wiring can be simplified, and manufacturing efficiency is improved.

(III) Less influence on the design.

(IV) It can reduce weight.

1‧‧‧ electric vacuum cleaner

10‧‧‧Vacuum cleaner body

20‧‧‧ extension tube

21,21x, 21y, 121,221‧‧‧‧tubes with wires

21A, 121A, 221A‧‧‧ tube body

21a‧‧‧ cylindrical carbon fiber sheet

21b‧‧‧flat cable (conductor)

21ba‧‧‧End

40‧‧‧inhalation body

121Aa‧‧‧Outer groove

21b ₄ , 121b, 221b‧‧‧ Lead (wire)

221Aa‧‧‧Inside groove

FIG. 1 is a left side view showing a first embodiment of an electric vacuum cleaner provided with a tube having a lead wire according to the present invention.

Fig. 2 is a perspective view of a driving device of a cleaner body according to the first embodiment.

Fig. 3 is a bottom view of a suction port body according to the first embodiment.

Fig. 4 is a partial cross-sectional side view of a suction port body according to the first embodiment.

Fig. 5 is an extension tube showing the first embodiment, (A) is a plan view, and (B) is a side view.

FIG. 6 is a perspective view showing a tube having a lead among the extension tubes of FIG. 5.

FIG. 7 is a diagram illustrating a laminated structure of a tube body in the tube with a lead in FIG. 6.

FIG. 8 is a cross-sectional view of the tube with a lead of FIG. 6.

FIG. 9 is a cross-sectional view of a wire (flat cable) in the pipe with a wire of FIG. 6.

10 is a cross-sectional view of a tube having a lead wire according to a first modification of the first embodiment.

11 is a cross-sectional view of a tube having a lead wire according to a second modification of the first embodiment.

Fig. 12 is a cross-sectional view of a tube having a lead wire according to the second embodiment.

Fig. 13 is a cross-sectional view of a tube having a lead wire according to a third embodiment.

FIG. 14 is a plan view of a lead (lead) in the lead-equipped tube of FIG. 13.

15 is a cross-sectional view of a tube having a lead wire according to a fourth embodiment.

(Embodiment 1)

FIG. 1 is a left side view showing a first embodiment of an electric vacuum cleaner provided with a tube having a lead wire according to the present invention.

The electric vacuum cleaner 1 according to the first embodiment is an upright electric vacuum cleaner including a cleaner body 10, an extension pipe 20 having a pipe 21 with a lead wire according to the present invention, and a suction port body 40.

(About the cleaner body)

The cleaner body 10 includes a driving device 11, a dust cup unit 12 and a battery 13 which are detachably mounted on the driving device 11.

(Drive)

Fig. 2 is a perspective view of a driving device of a cleaner body according to the first embodiment.

As shown in FIG. 1 and FIG. 2, the driving device 11 includes a main body portion 11 a including an electric blower (not shown), a battery mounting portion 11 b connected to the main body portion 11 a, and a main body portion 11 a and a battery mounting portion 11 b. The handles 11c at both end portions are connected to the joint portion of the main body portion 11a and the handle 11c, and the suction cylinder portion 11d protrudes to the side opposite to the handle 11c.

Hereinafter, the side of the suction cylinder 11d of the driving device 11 is forward, the side of the handle 11c is rear, the side of the battery mounting portion 11b is lower, the side opposite to the battery mounting portion 11b is upward, and the left and right sides with the handle 11c facing forward are The left and right will be explained.

A body having a front portion 11a by a grid-like rib is provided at the front opening portion 11a _an opening portion 11a of the cylindrical portion of the housing ₁ constituting the outer profile.

Further, the main body portion 11a, along the front edge of the opening end portion of the flange 11a is _{provided. 1,} the lower portion of the inner flange of the inner flange width of the wide width wide portion 11a _11.

Further, the wide inner portion 11a _{11 is} provided with a locking convex portion 11a ₁₂ and an engaging concave portion 11a ₁₃ that are locked with the locking portion 12b ₁ provided in the dust cup unit 12 so as to be able to be locked and disengaged. In addition, the locking convex portions 11 a ₁₂ protrude downward, and the engaging concave portions 11 a ₁₃ open forward.

The battery mounting portion 11b has a recessed portion that opens downward and rearward and has a terminal portion that can be electrically connected to the terminal portion of the battery 13 inside. The battery 13 is inserted into the recessed portion from the rear, and the battery 13 is pulled out rearward. To remove from the recess. In addition, the left and right inner sides of the recessed portion of the battery mounting portion 11b are provided with grooves extending in the front-rear direction, and the left and right sides of the battery 13 are provided with convex portions. When the battery 13 is mounted to the battery mounting portion 11b, the left and right convex portions Insert while sliding in the left and right grooves.

In addition, an exhaust port (not shown) is formed on the right side of the case constituting the battery mounting portion 11b for discharging the airflow passing through the electric blower to the outside.

The handle 11c is formed in a substantially U-shape, and an operation portion 11e is provided outside the upper curved portion.

The operation portion 11e includes a cushion portion 11e ₂ made of an elastic material (rubber, elastomer, etc.) attached to a recessed portion of a resin case constituting the handle 11c, and an unillustrated portion (inside the casing) provided inside the recessed portion. Switch unit.

The pad portion 11e2 is provided with recesses at the front and back, and the switch unit is provided with switches at the front and back. In addition, the switch unit is configured such that the electric cleaner 1 can be operated by the following operation, for example. First, the front or rear switch is pressed through the front or rear recess of the pad portion 11e2, thereby turning on the power. After that, press Pressing the front switch once will turn into the strong mode, pressing it twice will switch to the standard mode, and pressing it three times will repeat them. Turn off the power by pressing the rear switch while the power is on.

Suction cylindrical portion 11d is provided at a front end portion having the extension tube and can be connected to the front opening portion 20 11d _1, 11d in communication with the front _{opening. 1} and can be connected to the outlet provided in the inlet 12 of the dirt cup unit 12a ₁ 11d ₂ A hook portion 11d ₃ provided at a position between the front opening portion 11d ₁ and the outflow port 11d ₂ .

In addition, a pair of hole portions are provided below the front opening portion 11d ₁ of the front end portion of the suction cylinder portion 11d, and a pair of female terminal portions 11y ₁₂ are connected to the hole portions, and the pair of female terminal portions 11y ₁₂ is provided in the front-end | tip part of a pair of lead wires (not shown) extended from the main-body part 11a side.

(Dust Cup Unit)

Dirt cup unit 12 includes a locking recess portion having an outer peripheral surface of the inflow port 12a of the container _{12a. 1} and ₂ of the dust collecting cards 12a, _{12b. 1} having the cup portion 12b and the opening portion 12a of the dust collecting container fitted locking portion detachably A filter portion (not shown) that is housed in the cup portion 12b and an inner cylinder portion (not shown) that is detachably attached to the cup portion 12b so as to be housed in the dust container 12a.

When the dust cup unit 12 is mounted on the driving device 11, the locking recessed portion 12a _{2 of} the dust collection container 12a is hooked to the hook portion 11d _{3 of the} suction cylinder portion 11d, and the cup portion 12b is aligned with the body portion 11a while maintaining this state. the position of the front opening portion 11a _1. Thereby, the locking portion 12b _{1 of the} dust cup unit 12 is locked to the locking convex portion 11a ₁₂ and the engaging concave portion 11a _{13 of the main} body portion 11a.

According to the vacuum cleaner body 10 configured as described above, by driving the electric blower, the air containing dust flows into the suction cylinder portion 11d through the suction port body 40 and the extension pipe 20, and the air containing the dust flows into the dust collection unit from the suction cylinder portion 11d. In the container 12a, the larger dust is separated in the dust collection container 12a, the smaller dust is captured by the filter portion, and the air from which the dust has been removed is discharged from the exhaust port to the outside through the main body portion 11a.

(About inhalation body)

Fig. 3 is a bottom view of a suction port body according to the first embodiment. Fig. 4 is a partial cross-sectional side view of a suction port body according to the first embodiment.

As shown in FIGS. 3 and 4, the suction inlet body 40 includes a bottom plate portion 41a, a top plate portion 41b opposed to the bottom plate portion 41a, a front plate portion 41c and a rear plate portion 41d provided in front and rear of the traveling direction, and left and right provided in the traveling direction. Left side plate portion 41e and right side plate portion 41f.

The suction port body 40 includes a suction port body 41 provided on the bottom plate portion 41a and extending in the left-right direction (direction of arrow A1), a connection pipe portion 42 connected to the rear of the suction port body 41 through a connecting shaft portion 42x, and extending in the left-right direction. The rotating brush 43 is provided on the suction port body 41 in a rotating manner, the rotating brush motor 44 for driving the rotating brush 43, the brush cover member 80 covering the left end of the rotating brush 43 in FIG. 3, and the bottom cover 41a. Lift the detection-side switch 47 and the wheel 54.

The motor output gear 50 fixed to the motor output shaft 46 of the rotating brush motor 44 and the gear portion 58 b attached to the rotating brush 43 are connected by a timing belt 48.

Therefore, when the start switch of the operation part 11e (FIG. 1) is activated and the floor cleaning operation is started, the dust which is scanned into the floor by the rotating brush 43 driven by the rotating brush motor 44 passes from the suction inlet body 41 through the connecting pipe part 42 Transported to the dust cup unit 12 (Fig. 1).

The lift detection side switch 47 includes a swing lever portion having a wheel, a switch body supporting the swing lever portion to be swingable, and a spiral torsion spring that urges the swing lever portion downward, and the switch body is connected to the rotation accommodated in the bottom plate portion 41a The brush motor drives the circuit board, and the wheels of the swing lever portion are exposed downward from the bottom plate portion 41a.

When the suction port body 40 is lifted off the ground, the detection-side switch 47 is lifted to forcibly stop the driving of the rotary brush motor 44.

A pair of lead wires electrically connected to the rotating brush motor 44 and the lift detection side switch 47 are provided inside the suction port body 40, and the pair of lead wires are electrically connected to a pin-shaped pair of male terminals provided in the connecting pipe portion 42.部 42a.

In addition, a locking recessed portion 42 b is provided at a front end portion of the connection pipe portion 42.

(About extension tube)

Fig. 5 shows an extension tube according to the first embodiment, (A) is a plan view, and (B) is a side view. 6 is a perspective view showing a tube having a lead among the extension tubes of FIG. 5, and FIG. 7 is a diagram illustrating a laminated structure of the tube body in the tube having a lead in FIG. 6. In addition, FIG. 8 is a cross-sectional view of the pipe with a lead in FIG. 6, and FIG. 9 is a cross-sectional view of a wire (flat cable) in the pipe with a lead in FIG. 6.

As shown in FIGS. 1 and 5, the extension tube 20 includes a cylindrical tube 21 having a lead, and a cylindrical first connection tube provided at one end of the tube 21 having a lead and detachably connected to the cleaner body 10. The portion 22 is a cylindrical second connection pipe portion 23 provided at the other end portion of the tube 21 having a lead wire and detachably connected to the suction port body 40.

(Tube with wire)

As shown in FIGS. 6 to 9, the tube 21 having a lead includes a tube main body 21A made of dry carbon fiber, and a lead provided along the longitudinal direction so as to closely adhere to the tube main body 21A in an insulated state.

Specifically, the tube 21 having a conductive wire is a tubular carbon fiber sheet layer 21a, which is a multilayer body constituting a tube body 21A, and a flat cable 21b that is a conductive wire is sandwiched between two adjacent cylindrical carbon fiber sheet layers 21a and 21a.

In the first embodiment, the first tubular carbon fiber sheet layer 21a ₁ , the second tubular carbon fiber sheet layer 21a ₂ , and the third tubular carbon fiber sheet layer 21a _{3 are} sequentially laminated from the inside to form the tube body 21A, and A flat cable 21b is tightly sandwiched between the two cylindrical carbon fiber sheet layers 21a ₂ and the third cylindrical carbon fiber sheet layer 21a ₃ . Further, the cylindrical outer peripheral surface of the third layer of carbon fiber sheets 21a ₃ as the outermost layer laminated with a resin coating 21c. Next, it is processed into dry carbon fiber (Dry Carbon). Dry carbon fiber is molded in a pressure-proof furnace using a pressure-resistant device capable of making the inside high pressure.

As shown in FIG. 9, the flexible flat cable ₂₁ b is formed by sandwiching a pair of metal tapes ₂₁ b ₃ (for example, copper tapes) between the upper and lower insulating resin sheets ₂₁ b ₁ and ₂₁ b ₂ in an insulated state. These insulating resin sheets 21b ₁ and 21b ₂ are welded and integrated by heating between a pair of heating rollers, for example.

The branched end portions 21ba of the flat cable 21b are formed so as to protrude outward from both end portions of the laminated body of the cylindrical carbon fiber sheet layer 21a. In addition, the metal strips 21b ₃ at both ends of the flat cable 21b are exposed to the outside, and are electrically connected to the pair of male terminal portions 21b ₅ and the pair of male terminal portions 21b ₆ through a lead wire 21b ₄ through solder or the like. This lead 21b ₄ is a wire (for example, a copper wire) covered with an insulating tube.

As shown in FIG. 7, the first cylindrical carbon fiber sheet layer 21 a _{1 is} composed of a unidirectional carbon fiber sheet having a plurality of carbon fibers extending parallel to the longitudinal direction of the tube.

The second cylindrical carbon fiber sheet layer 21a ₂ and the third cylindrical carbon fiber sheet layer 21a _{3 are} composed of bidirectional carbon fiber sheets having warp and weft threads of a plurality of carbon fibers.

In addition, in FIG. 7, illustration of the flat cable is omitted.

As the unidirectional carbon fiber sheet and the bidirectional carbon fiber sheet, a commercially available prepreg sheet impregnated with a resin between the carbon fibers can be used. In addition, a plurality of carbon fibers can be composed of filaments that cross diagonally except warp and weft. In addition, it is also possible to freely combine the crossover, the combination of warp and weft, and the like.

The tube 21 with a lead wire can be manufactured using a commercially available prepreg by forming and laminating the following method using the first to third cylindrical carbon fiber sheet layers 21a ₁ to 21a ₃ .

For example, as a first method, a first cylindrical carbon fiber sheet layer 21a _{1 is} wound around a shaft rod, a second cylindrical carbon fiber sheet layer 21a ₂ is wound thereon, and a flat cable 21b is placed thereon. A third cylindrical carbon fiber sheet layer 21a ₃ is wound thereon and formed.

In addition, FIG. 8 shows a cross section of the tube 21 with a wire formed by the first method.

In addition, as a second method, as shown in FIG. 10, the first to third cylindrical carbon fiber sheet layers 21a ₁ to 21a ₃ are arranged laterally so as to slightly overlap each other, and are placed on the third cylindrical carbon fiber sheet layer 21a ₃ . rear flat cable 21b, from the side of the first cylindrical carbon fiber layer _{21a. 1} sequentially each cylindrical carbon fiber sheet 21a wound on the forming mandrel. FIG. 10 is a cross-sectional view of a tube having a lead wire according to a first modification of the first embodiment.

In addition, as a third method, as shown in FIG. 11, a bidirectional carbon fiber sheet 21am is double-wound onto a shaft rod, and a flat cable is placed on the bidirectional carbon fiber sheet 21am that has not yet been wound. The wires 21b are formed by triple-winding the bidirectional carbon fiber sheet together. In addition, FIG. 11 is a cross-sectional view of a tube having a lead wire according to a second modification of the first embodiment.

In the case of the first embodiment, at the center of the width of the flat cable 21b (between a pair of metal strips 21b ₃ ) at both ends of the tube 21 having the conductive wire formed, it is formed by cutting to position the first and second The small notch portion 21n at the connection position of the two connection pipe portions 22 and 23. At this time, as shown in FIG. 6, a gap may be formed between the pair of metal strips ₂₁ b ₃ at both ends of the flat cable ₂₁ b.

In addition, the cutout portions 21n at both ends of the tube 21 having the lead wires may be formed at positions (for example, positions at which the center angle is 180 °) staggered from the flat cable 21b.

In the case of the tube 21 having a wire formed by the first method described above, each of the cylindrical carbon fiber sheet layers 21a has two end portions extending in the longitudinal direction of the tube, and the end surfaces having the two end portions abut against each other. 21ax (Figure 7). In addition, the end face abutment portion 21ax is each cylindrical carbon fiber sheet layer 21a is a portion where the end faces of both end portions of the unidirectional and bidirectional carbon fiber sheets used in the formation are welded to each other.

In the tube 21 having a lead wire, the end surface abutment portion 21ax of the other cylindrical carbon fiber sheet layer 21a adjacent to the end surface abutment portion 21ax of one cylindrical carbon fiber sheet layer 21a is disposed at a position that does not overlap each other. In the first embodiment, each of the end surface abutting portions 21ax is disposed at a position where the center angle is shifted by 120 °. As described above, by staggering the positions of the end surface abutting portions 21ax in the circumferential direction, unevenness in the rigidity and strength of the pipe body does not occur. In addition, since each of the cylindrical carbon fiber sheet layers 21 a has an end surface abutment portion 21ax, each of the cylindrical carbon fiber sheet layers 21 a is formed as a layer having a uniform thickness without a step.

The case of pipe 21x having a second wire to the method shown in FIG. 10 (a modification) formed by the first to third cylindrical carbon fiber sheet overlap portion 21a ₁ ~ 21a ₃ are aligned at the same position By making the thickness of the portion other than the overlapping portion into a three-layer structure of approximately a carbon fiber layer, the total weight of the tube body 21Ax can be suppressed.

In the case of the tube 21y having a conductive wire formed by the third method (the second modification) shown in FIG. 11, the position of the end surface of the starting end portion and the end surface of the end portion can be matched, so that the thickness can be locally increased without rigidity. Homogenize.

According to the tube 21 with a lead wire according to the first embodiment, the following effects can be obtained.

(I) Since the expansion of the thickness T ₆ of the flat cable 21b is hardly reflected on the outside and the inside, the tube specifications of the same outer diameter can reduce the inner diameter loss caused by wiring, and can greatly reduce the appearance design Impact.

(II) In addition to the support parts required for conventional wiring, the weight of the tube body 21A can be greatly reduced by forming the tube body 21A with dry carbon fibers.

(III) Since the supporting parts for the conventional wiring are not required, and the wires (flat cable 21b) are installed at the same time when the pipe body 21A is formed, the process of installing the wires after the pipe body 21A is formed is not required, thereby improving manufacturing efficiency.

(First connecting pipe section)

As shown in FIGS. 1 and 5, the first connection pipe portion 22 is a portion connected to the cleaner body 10 and includes a connection pipe body 22 a and a cover member 22 b.

The connecting pipe body 22a has a fixing portion (broken portion in FIG. 5) which is inserted into one end portion of the tube 21 having a lead wire and is fixed by an adhesive, and the pair of male terminal portions 21b connected to the fixing portion and holding the tube 21 having a lead wire. ₅ and the terminal holding portion 22b is covered with a cover member, attached to the terminal holding portion provided in front of the cleaner main body and the insertion portion 10 is inserted in the opening portion 11d _1.

The fixing portion (the dotted line portion in FIG. 5) has a positioning convex portion 22 a _{12 that} engages with the notch portion 21 n of the tube 21 having the lead on the boundary portion of the outer peripheral surface with the terminal holding portion. The positioning convex portions 22a to ₁₂ may be provided on the opposite side of the boundary portion.

The insertion portion has an engaging recessed portion 22a ₃₁ on the positioning convex portion 22a ₁₂ side of the outer peripheral surface. This engagement concave portion 22a ₃₁ disengageably engaging manner lock member provided in a suction cylindrical portion 11d of the cleaner body 10 11x ₁ (see FIG. 1) engaging claws engaged.

(Second connection pipe section)

As shown in FIGS. 1 and 5, the second connection pipe portion 23 is a portion connected to the suction port body 40 and includes a connection pipe body 23 a, a locking member 23 b, a coil spring (not shown), and a cover member 23 c.

The connecting pipe body 23a has a fixing portion (broken portion in FIG. 5) which is inserted into the other end portion of the pipe 21 having a lead wire and is fixed by an adhesive, and the pair of female terminal portions connected to the fixing portion and holding the pipe 21 having a lead wire. 21b ₆ and the terminal holding portion 23 covered with the cover member 23c.

The fixing portion (the broken line portion in FIG. 5) has a positioning convex portion 23 a _{12 that} engages with the cutout portion 21 n on the other side of the tube 21 having the lead wire at the boundary portion of the outer peripheral surface with the terminal holding portion. The positioning convex portions 23a to ₁₂ may be provided on the opposite side of the boundary portion.

The locking member 23c includes a locking claw portion (not shown). This locking claw portion is detachably engaged with the locking recess portion 42 b (see FIG. 4) of the connecting pipe portion 42 of the suction port body 40.

(Embodiment 2)

Fig. 12 is a cross-sectional view of a tube having a lead wire according to the second embodiment. In addition, in FIG. 12, the same code | symbol is attached | subjected to the same element as the element in FIG.

The electric vacuum cleaner according to the second embodiment is the same as the first embodiment except that the configuration of the tube 21Q having a lead wire of the extension pipe is different from that of the first embodiment. In the following, the differences between the second embodiment and the first embodiment will be mainly described.

The tube 21Q with a lead wire according to the second embodiment can be formed by the same manufacturing method as the first embodiment using the lead wire 21b ₄ described in FIG. 6 instead of the flat cable 21b with the lead pipe 21 with the lead wire according to the first embodiment. This case, the female terminal 21b ₅ and the male terminal portion 6 illustrates a portion 21b of each of both end portions ₆ welded to a pair of lead from both end portions of the tube having a projection 21Q is formed of a wire of 21b _4.

In addition, in the case of the second embodiment, the insulating tubes of the pair of leads 21b ₄ may be welded and integrated in advance. In this case, as long as the notches 21n at both ends of the tube body 21A described in FIG. 6 make the pair of leads 21b ₄ Separation is sufficient (refer to FIG. 14).

In addition, in the second embodiment, a pair of leads 21b _{4 may be} sandwiched between layers of a carbon fiber sheet wound like the first modification (FIG. 10) or the second modification (FIG. 11) of the first embodiment to form a tube having a lead. .

(Embodiment 3)

FIG. 13 is a cross-sectional view of a pipe having a lead wire according to a third embodiment, and FIG. 14 is a plan view of a wire (lead wire) in the pipe having a lead wire of FIG. 13. In FIGS. 13 and 14, the same reference numerals are given to the same elements as those in FIGS. 6 and 8.

The electric vacuum cleaner of the third embodiment is the same as the first embodiment except that the configuration of the tube 121 having a lead wire and the extension pipe is different from that of the first embodiment. Hereinafter, points different from the first embodiment in the third embodiment will be mainly described.

In the tube 121 with a lead wire according to the third embodiment, an outer groove 121Aa provided along the longitudinal direction is provided on the outer surface of the pipe body 121A, and a pair of lead wires 121b as a lead wire are stored in the outer groove 121Aa.

A pair of leads 121b, a metal wire (for example, a copper wire) is covered with an insulating resin covering material, and the covering material other than the two end portions is welded and integrated to have a length longer than the pipe body 121A. Here, The male terminal portion 21b ₅ and the female terminal portion 21b ₆ , which are the same as those in the first embodiment, are electrically connected to both ends.

The tube body 121A can be formed by winding the first to third cylindrical carbon fiber sheet layers 21a ₁ to 21a ₃ by a shaft rod having a groove in a long-side direction on the outside by the first to third methods described in the first embodiment. At this time, each cylindrical carbon fiber sheet layer 21 is wound into a shaft rod while being wound around the shaft rod, and is heated and press-molded in this state. Thereby, a pipe body 121A having an outer groove 121Aa in the longitudinal direction on the outside is formed. The depth D _{1 of the} side groove 121Aa is preferably set to a size equal to or greater than the thickness of the lead 121b. In addition, FIG. 13 shows a cross section of the tube 121 with a conductive wire formed by the first method.

After the tube body 121A is formed, a pair of leads 121b are integrated by welding in an outer groove 121Aa formed in the longitudinal direction on the outside of the tube body 121A. At this time, each lead 121b may be bonded to the inner surface of the outer groove 121Aa with an adhesive. In addition, an adhesive agent cover member 121c may be passed through the opening of the outer groove 121Aa in which each lead 121b is received to eliminate the tube body 121A. The step on the outside may be a resin coating layer 21c on the outermost layer of the outer surface of the pipe body 121A.

According to the tube 121 having a lead wire according to the third embodiment, the effects (I) and (II) of the first embodiment can be obtained. In addition, since a supporting part for wiring is not required, the mounting process of the lead wire (lead 121b) to the pipe body 121A is facilitated, and manufacturing efficiency is improved.

In addition, in the third embodiment, a tube having a lead wire can be formed like the first modification (FIG. 10) or the second modification (FIG. 11) of the first embodiment.

(Embodiment 4)

15 is a cross-sectional view of a tube having a lead wire according to a fourth embodiment. In FIG. 15, the same reference numerals are assigned to the same elements as those in FIG. 8.

The electric vacuum cleaner according to the fourth embodiment is the same as the first embodiment except that the configuration of the tube 221 having the extension tube and the wire having the lead wire is different from the first embodiment. Hereinafter, points different from the first embodiment in the fourth embodiment will be mainly described.

In the tube 221 with a lead wire according to the fourth embodiment, an inner groove 221Aa provided along the longitudinal direction is provided on the inner surface of the pipe body 221A, and a pair of lead wires 121b as a lead wire are stored in the inner groove 221Aa. The lead 121b is the same as the user in the third embodiment.

The tube body 221A can be formed by winding the first to third cylindrical carbon fiber sheet layers 21a ₁ to 21a _{3 in} a first to third method described in the first embodiment by using a shaft rod having a projection on the outer side in the longitudinal direction. . At this time, while each cylindrical carbon fiber sheet layer 21 is wound around the shaft rod, it is in close contact with the ridges of the shaft rod, and in this state, it is heated and press-molded. Thereby, the pipe body 221A having the inner groove 221Aa in the longitudinal direction on the inner surface is formed. The depth D _{2 of the} inner groove 221Aa is preferably set to a size equal to or greater than the thickness of the lead 121b. In addition, FIG. 15 shows a cross-section of a tube 221 having a wire formed by the first method.

After the tube body 121A is formed, the lead 121b is housed in an inner groove 221Aa formed in the longitudinal direction of the inner surface of the tube body 221A. At this time, the lead 121b may be adhered to the inner surface of the inner groove 221Aa by an adhesive. The lead 121 b may be protected by passing through the adhesive mounting cover member 221 c at the opening of the inner groove 221Aa in which the lead 121 b is stored. In addition, the outermost layer of the resin coating layer 21c on the outer surface of the tube body 221A may be used.

According to the tube 221 with a lead wire according to the fourth embodiment, the effects (I) and (II) of the first embodiment can be obtained. In addition, since there is no need for a support member for conventional wiring, the process of mounting the lead wire (lead 121b) to the pipe body 221A is facilitated, and manufacturing efficiency is improved.

In addition, in the fourth embodiment, a tube having a lead wire can be formed as in the first modification (FIG. 10) or the second modification (FIG. 11) of the first embodiment.

(Embodiment 5)

The first to fourth embodiments exemplify the case where the vacuum cleaner body and the suction port body are connected to a vertical electric vacuum cleaner using a pipe with a lead as an extension pipe, but the present invention can also be applied to a horizontal electric vacuum cleaner. In the case of a horizontal electric vacuum cleaner, one end portion of a tube having a lead wire is connected to a suction port body, one end portion of a flexible hose having an operation portion that is operated and stopped is connected to a cleaner body, and the other end portion of the pipe having a lead wire Connected to the other end of the flexible hose.

(Embodiment 6)

The first to fifth embodiments exemplify the use of the tube with a lead wire of the present invention as an extension pipe of an electric vacuum cleaner, but the tube with a lead wire of the present invention is not limited to use in an electric vacuum cleaner. For example, as a structural material for supporting a plurality of rotors of a multicopter-type drone and a lead wire for supplying power to a motor of each rotor, the tube with a lead wire of the present invention can be used. In this case, the internal space of the tube having a lead wire can be utilized as a storage space for storing components such as a battery and a circuit board.

(to sum up)

A tube having a lead according to the present invention includes a tube body made of dry carbon fiber, and a lead provided along the longitudinal direction so as to be closely adhered to the tube body in an insulated state.

The tube with a lead of the present invention may be configured as described below, or the following configurations may be appropriately combined.

(1) The tube body is formed by laminating a plurality of carbon fiber sheets.

According to this configuration, it is possible to achieve weight reduction and enhancement of the tube body. In particular, it is possible to strengthen the force applied to the radial direction of the pipe body.

(2) The outer side of the pipe body has an outer groove provided along the longitudinal direction; the lead wire is accommodated in the outer groove.

According to this configuration, since the lead wire is not exposed from the outside of the pipe body and can be accommodated in the outer groove, it is possible to suppress the influence on the appearance design of the pipe body to a small extent. In addition, according to this configuration, the wire can be easily attached to the pipe body. In this case, from the viewpoint of protecting and preventing the lead wire from falling out of the outer groove, it is preferable that after the wire enters the outer groove of the pipe body, the opening of the outer groove is covered with a cover member.

(3) The inner surface of the pipe body has an inner groove provided along the longitudinal direction; the lead wire is accommodated in the inner groove.

According to this configuration, since the lead wire is not exposed from the inner surface of the tube body and can be stored in the inner groove, the internal space of the tube body does not become narrow. Therefore, when a pipe having a lead wire is used as an extension pipe of an electric vacuum cleaner, the suction performance of the electric vacuum cleaner is not reduced. In this case, from the viewpoint of protecting and preventing the lead wire from falling off from the inner groove, it is preferable that after the lead wire enters the inner groove of the tube body, the opening of the inner groove is covered with a cover member.

(4) The lead is arranged between a plurality of layers of the carbon fiber sheet.

With this configuration, the process of assembling the lead wire to the pipe body and the components required for assembly are not necessary. In addition, according to this configuration, there is no influence on the appearance design of the pipe body, and the internal space of the pipe body is not narrowed.

(5) The lead wire has two end portions that protrude from the both end portions in the longitudinal direction of the tube body to the outer side in the longitudinal direction.

According to this configuration, the connection between the both ends of the lead wire and other leads is facilitated.

In addition, it should be thought that embodiment shown in this specification is an illustration and restrictive at no points. The scope of the present invention is shown not by the above description but by the scope of patent application, and it is intended to include all modifications within the meaning and scope equivalent to the scope of patent application.

Claims (7)

A tube having a lead includes a tube body made of dry carbon fiber, and a lead provided along the longitudinal direction so as to closely adhere to the tube body in an insulated state. For example, a tube with a conducting wire according to item 1 of the scope of the patent application, wherein the tube body is formed by laminating a plurality of carbon fiber sheets. For example, a tube with a conducting wire according to item 1 or 2 of the patent application scope, wherein an outer groove provided along the long side direction is provided on the outer surface of the pipe body; and the conducting wire is received in the outer groove. For example, a tube with a conducting wire according to item 1 or 2 of the patent application, wherein the inner surface of the pipe body has an inner groove provided along the long side direction; the wire is received in the inner groove. For example, the tube with a conducting wire according to item 2 of the patent application, wherein the conducting wire is arranged between a plurality of layers of the carbon fiber sheet. For example, the tube with a conducting wire according to any one of claims 1, 2, and 5, wherein the conducting wire has two end portions that protrude from both ends in the longitudinal direction of the pipe body toward the outside in the longitudinal direction. An electric vacuum cleaner includes an extension tube having a tube having a lead wire according to any one of claims 1 to 6, a suction port body connected to one end portion of the extension tube, and directly or indirectly connected to the extension. The cleaner body at the other end of the tube.