CN111743456A - Extension pipe of electric dust collector and electric dust collector with the same - Google Patents
Extension pipe of electric dust collector and electric dust collector with the same Download PDFInfo
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- CN111743456A CN111743456A CN202010219820.5A CN202010219820A CN111743456A CN 111743456 A CN111743456 A CN 111743456A CN 202010219820 A CN202010219820 A CN 202010219820A CN 111743456 A CN111743456 A CN 111743456A
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- Prior art keywords
- main body
- pipe
- tube
- extension pipe
- pressing member
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/24—Hoses or pipes; Hose or pipe couplings
- A47L9/242—Hose or pipe couplings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Vacuum Cleaner (AREA)
Abstract
An extension pipe of an electric vacuum cleaner, comprising an elongated pipe main body made of dry carbon fiber and a connecting pipe portion provided at least one end of the pipe main body; the connecting pipe portion includes: a main body portion having a tubular insertion portion inserted into the one end of the tube main body and a tubular connection portion protruding to the outside of the tube main body and connected to a cleaner main body side or a suction appliance side; and a curved plate-like pressing member attached to the main body by a fixing tool; the pressing member has a concave curved surface portion that can be brought into contact with an outer surface of the one end of the tube main body, and is configured to: the one end of the tube main body is sandwiched between an outer surface of the insertion portion of the connection tube portion inserted into the one end and the concave curved surface portion of the pressing member, and the sandwiched state is maintained by the fixing tool.
Description
Technical Field
The present invention relates to an extension pipe of an electric dust collector and an electric dust collector with the extension pipe.
Background
As an extension pipe of a conventional electric vacuum cleaner, patent document 1 discloses an extension pipe including: a tube main body made of dry carbon fibers (dry carbon); first and second connecting pipe portions provided at both ends of the pipe main body in the longitudinal direction, respectively; and a conductive unit disposed within the tube body; the extension pipe realizes light weight and high strength.
In the extension pipe, the first connection pipe portion includes: a body portion having a cylindrical insertion portion inserted into one end of the tube body and a cylindrical exposure portion protruding from the insertion portion to the outside of one end side of the tube body; and a first cover member attached to the main body portion by a screw.
The second connecting pipe portion includes: a body portion having a cylindrical insertion portion inserted into the other end of the tube body and a cylindrical exposure portion protruding from the insertion portion to the outside of the other end side of the tube body; and a second cover member attached to the main body portion by screws.
In the first connecting pipe section, the exposed portion has: a terminal holding portion which is provided in connection with the insertion portion and holds a pin-shaped power receiving terminal on one end side of the conductive unit; and a connecting portion connected to the terminal holding portion; the first cover member is attached to the terminal holding portion so as to cover the holding portion of the pin-shaped power receiving terminal.
In the second connection pipe section, the exposed portion includes: a connecting part connected with the inserting part; and a terminal holding portion which is provided on an outer surface of the connecting portion and holds a clip-shaped power supply terminal of the other end of the conductive unit; the second cover member is attached to the terminal holding portion so as to cover the clip-shaped power supply terminal.
In the extension pipe, both ends of the pipe main body and the first and second connecting pipe portions are connected by inserting the respective insertion portions of the first and second connecting pipe portions into the pipe main body and bonding the respective insertion portions and the pipe main body with an adhesive.
Documents of the prior art
Patent document
[ patent document 1] International publication No. WO2018/087936A1
Disclosure of Invention
Technical problem to be solved by the invention
In the above-described conventional extension pipe, the pipe main body and the insertion portions of the first and second connecting pipe portions are joined by adhesive bonding, but it is desirable to further increase the tensile strength with respect to the force in the tensile direction in which the pipe main body and the first and second connecting pipe portions are separated from each other.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an extension pipe of an electric vacuum cleaner and an electric vacuum cleaner including the extension pipe.
Means for solving the problems
According to the present invention, there is provided an extension pipe of an electric vacuum cleaner, comprising an elongated pipe main body made of dry carbon fiber, and a connection pipe portion provided at least at one end of the pipe main body;
the connecting pipe portion includes: a main body portion having a tubular insertion portion inserted into the one end of the tube main body and a tubular connection portion protruding to the outside of the tube main body and connected to a cleaner main body side or a suction appliance side; and a curved plate-like pressing member attached to the main body by a fixing tool;
the pressing member has a concave curved surface portion which can abut against an outer surface of the one end of the tube main body,
and is constituted as follows: the one end of the tube main body is sandwiched between an outer surface of the insertion portion of the connection tube portion inserted into the one end and the concave curved surface portion of the pressing member, and the sandwiched state is maintained by the fixing tool.
Effects of the invention
According to the present invention, when the one end of the pipe main body and the insertion portion of the connecting pipe portion are bonded by the adhesive, the one end of the pipe main body can be sandwiched and held by the insertion portion of the connecting pipe portion and the pressing member in addition to the bonding strength of the adhesive, and therefore, the tensile strength is further improved with respect to the force in the tensile direction in which the pipe main body and the connecting pipe portion are separated from each other.
Drawings
Fig. 1 is a perspective view of an electric vacuum cleaner according to a first embodiment of the present invention, as viewed obliquely from the rear.
Fig. 2 is a perspective view showing an extension pipe in the electric vacuum cleaner according to the first embodiment.
Fig. 3 is an exploded view of the extension tube of fig. 2.
Fig. 4 is a cross-sectional view of the tube main body of the extension tube of the first embodiment cut in a direction orthogonal to the axial center.
Fig. 5 is a diagram illustrating a laminated structure of a tube main body of the extension tube according to the first embodiment.
Fig. 6 is a perspective view showing a main body portion of a first connecting pipe portion in the extension pipe according to the first embodiment.
Fig. 7 is a perspective view of the extension pipe according to the first embodiment, as seen from the outside of the pressing member of the first connecting pipe portion.
Fig. 8 is a perspective view of the pressing member of fig. 7 as viewed from the inside thereof.
Fig. 9 is a longitudinal sectional view of the first connection pipe side of the extension pipe of the first embodiment.
Fig. 10 is a cross-sectional view of the first connecting tube side of the extension tube of the first embodiment.
Fig. 11 is a longitudinal sectional view of the extension pipe of the first embodiment on the second connection pipe side.
Fig. 12(a) to (D) are views for explaining the assembly steps of the extension pipe on the first connection pipe side according to the first embodiment.
Detailed Description
(first embodiment)
Fig. 1 is a perspective view of an electric vacuum cleaner according to a first embodiment of the present invention, as viewed obliquely from the rear. In fig. 1, the directions of the front, rear, left, right, and up and down of the electric vacuum cleaner are indicated by arrows, and the directions of the front, rear, left, right, and up and down of the extension pipe are indicated by arrows in fig. 2 and 3.
As shown in fig. 1, the electric vacuum cleaner 1 includes a cleaner main body 10, a suction port body 100, and an extension pipe 30 connecting the cleaner main body 10 and the suction port body 100.
< with respect to cleaner main body >
As shown in fig. 1, the cleaner body 10 includes: a drive device 11 in which an electric blower (not shown) is built; a cyclone-type dust collecting device 12 detachably mounted on the driving device 11; and a battery 13 detachably mounted on the drive device 11.
The drive device 11 includes: a cylindrical suction pipe portion 11a provided at the front; a handle 11b having an operation switch (not shown) connected to the rear of the suction pipe 11 a; an electric blower housing part 11c connected to the upper end and the lower end of the handle 11 b; a battery mounting part 11d provided below the electric blower housing part 11 c; and a circuit board (not shown).
The battery 13, the electric blower, the operation switch, and a pair of clip-shaped power supply terminals (not shown) to be described later are electrically connected to the circuit board via lead wires.
A dust collecting device mounting portion 11e for detachably mounting the dust collecting device 12 is provided at a lower portion of the suction pipe portion 11a, and a first locking mechanism portion having a lock release button 11f is provided at a front end side of the suction pipe portion 11 a.
A pair of insertion holes into which a pair of pin-shaped power receiving terminals 82 (see fig. 3) of the extension pipe 30, which will be described later, are inserted are provided in the front end surface of the suction pipe portion 11a, and a clip-shaped power supply terminal (not shown) electrically connected to the pair of pin-shaped power receiving terminals 82 is provided in the pair of insertion holes.
Further, an engagement recess (not shown) that is detachably engaged with a second engagement claw (not shown) of the dust collection device 12, which will be described later, is provided on the electric blower housing portion 11c side of the dust collection device mounting portion 11 e.
The first locking mechanism portion has: a first locking claw (not shown) that is locked so as to be capable of being locked and disengaged with a locking concave portion 51ba (see fig. 2) of a first connecting tube portion 50 (described later) of the extension tube 30 inserted into the suction tube portion 11 a; the locking release button 11f is connected with the first locking claw; and a biasing member (not shown) that biases the first locking claw in a direction in which the first locking claw is locked in the locking recess 51 ba; the first locking claw is disengaged from the locking recess 51ba by pressing the lock release button 11 f.
The dust collecting device 12 includes: a dust collecting container 12 a; a filter unit 12b detachably attached to an opening of the dust collection container 12 a; and a second lock mechanism portion having a lock release lever 12c provided on an outer surface of the filter portion 12 b.
The filter unit 12b includes: an inner tube portion (not shown) having a mesh member; and a filter main body (not shown) connected to the inner cylinder portion.
The second locking mechanism portion has: a second locking claw (not shown) connected to the lock release lever 12 c; and a biasing member (not shown) for biasing the second engaging claw in a direction of engaging with the engaging recess in a state where the dust collecting device 12 is mounted on the dust collecting device mounting portion 11e of the driving device 11; the second locking claw is disengaged from the engagement recess by sliding the lock release lever 12 c.
< about the suction port body >
As shown in fig. 1, the suction port body 100 has: a suction port body 101 that travels in the front-rear direction on the floor surface; a joint unit 102 that is connected to the suction port main body 101; and a connecting tube 103 that is connected to the joint 102.
The suction port main body 101 includes: a suction port 101a provided at the bottom; a rotary brush 101b rotatably provided near the suction port 101 a; a drive motor (not shown) that rotates the rotary brush 101 b; and a motor drive circuit (not shown). The drive motor and a pair of pin-shaped power receiving terminals described later are electrically connected to a motor drive circuit via lead wires.
The joint 102 is connected to the suction port main body 101 so as to be rotatable about a first axial center in the front-rear direction, and communicates with the suction port 101 a.
The connecting tube 103 has a proximal end 103a, and a distal end 103b detachably connected to the extension tube 30, and the proximal end 103a is swingably connected to the joint 102 around a second axis orthogonal to the first axis.
Further, an outer surface of the distal end 103b is provided with a locking recess (not shown) which is locked so as to be capable of being locked and released with a locking claw 91c (see fig. 3 and 11) of a locking mechanism portion 90 (described later) of the extension pipe 30.
The pair of pin-shaped power receiving terminals (not shown) are provided at a step portion of the distal end 103b that abuts against an end surface of a second connecting pipe portion 60 (described later) of the extension pipe 30, and the pair of pin-shaped power receiving terminals are electrically connected to a pair of clip-shaped power supply terminals 83 (see fig. 3 and 11) provided in the second connecting pipe portion 60.
< about extension pipe >
Fig. 2 is a perspective view illustrating an extension pipe in the electric vacuum cleaner according to the first embodiment, and fig. 3 is an exploded view of the extension pipe of fig. 2.
The extension pipe 30 includes: a tube main body 40; a first connecting pipe portion 50 and a second connecting pipe portion 60, the first connecting pipe portion 50 being provided at one longitudinal end 40a (rear end) of the pipe main body 40, the second connecting pipe portion 60 being provided at the other longitudinal end 40b (front end) of the pipe main body 40; a cover member 70 provided along the longitudinal direction of the outer surface of the tube main body 40; a pair of conductive wires 80 provided between the tube main body 40 and the cover member 70; and a lock mechanism portion 90 provided along the longitudinal direction of the tube main body 40.
In the following description, one end (rear side) of the extension pipe 30 in the longitudinal direction is a side (downstream side in the airflow direction) connected to the cleaner body 10, and the other end (front end) is a side (upstream side in the airflow direction) connected to the suction port body 100.
[ tube main body ]
Fig. 4 is a cross-sectional view obtained by cutting the tube main body of the extension tube of the first embodiment in the direction orthogonal to the axial center, and fig. 5 is a view illustrating a laminated structure of the tube main body of the extension tube of the first embodiment.
As shown in fig. 4 and 5, the tube main body 40 is formed of dry carbon fibers in which a plurality of cylindrical carbon fiber layers 41 are stacked. In the case of the first embodiment, the plurality of laminated cylindrical carbon fiber layers 41 are formed by laminating a first cylindrical carbon fiber layer 41a, a second cylindrical carbon fiber layer 41b, and a third cylindrical carbon fiber layer 41c in this order from the inside. Further, a resin coating layer 42 is laminated on the outer peripheral surface of the third cylindrical carbon fiber layer 41c as the outermost layer. Then, the carbon fiber is processed into dry carbon fiber. Dry carbon fibers are molded in a pressurizable kiln using a device capable of making the inside pressure high.
As shown in fig. 5, the first cylindrical carbon fiber layer 41a is composed of a unidirectional carbon fiber sheet having a plurality of carbon fibers extending in parallel with the tube longitudinal direction.
The second cylindrical carbon fiber layer 41b and the third cylindrical carbon fiber layer 41c are formed of a bidirectional carbon fiber sheet having a plurality of warp and weft of carbon fibers.
As the unidirectional carbon fiber sheet and the bidirectional carbon fiber sheet, a commercially available prepreg sheet (prepreg sheet) in which a resin (e.g., an epoxy resin) is impregnated in advance between carbon fibers can be used. The plurality of carbon fibers may be formed in an obliquely crossing shape other than the warp and the weft. Moreover, combinations of the cross threads, the warp threads, the weft threads, and the like can be freely combined and replaced.
The tube main body 40 can be manufactured by molding and laminating the first cylindrical carbon fiber layer 41a, the second cylindrical carbon fiber layer 41b, and the third cylindrical carbon fiber layer 41c by a known method using a die layer by layer, using a commercially available prepreg sheet. For example, there is a method of winding around a mandrel such as a metal rod.
In the tube main body 40, the thickness T1 of the first cylindrical carbon fiber layer 41a is about 0.1mm, the thickness T2 of the second cylindrical carbon fiber layer 41b and the thickness T3 of the third cylindrical carbon fiber layer 41c are about 0.2mm, the thickness T4 of the resin coating layer 42 is about 0.1mm, and the overall thickness T5 is about 0.6 mm. The thicknesses of the first cylindrical carbon fiber layer 41a, the second cylindrical carbon fiber layer 41b, and the third cylindrical carbon fiber layer 41c are determined by the thicknesses of the unidirectional and bidirectional carbon fiber sheets used for forming them. The thicknesses (T1, T2, T3, and T4) are not limited to the above.
Each of the cylindrical carbon fiber layers 41 has both ends arranged on the circumferential direction side of the tube and extending in the longitudinal direction, and has an end surface contact portion 41x in which end surfaces of the both ends contact each other. The end face contact portion 41x is a portion in which end faces of both end portions of the unidirectional and bidirectional carbon fiber sheets used when the respective cylindrical carbon fiber layers 41 are formed are fused to each other.
In the tube main body 40, the end surface contact portion 41x of one cylindrical carbon fiber layer 41 and the end surface contact portion 41x of the adjacent other cylindrical carbon fiber layer 41 are arranged at positions not overlapping each other. In the case of the first embodiment, each end surface contact portion 41x is arranged at a position shifted by 120 ° from the center angle. By thus shifting the positions of the end surface abutting portions 41x uniformly in the circumferential direction, the pipe body 40 can be made uniform without forming strong and weak portions of rigidity.
Since each of the cylindrical carbon fiber layers 41 has the end surface contact portion 41x, each of the cylindrical carbon fiber layers 41 is formed as a layer having a uniform thickness without a height difference. That is, when the carbon fiber sheet is triple-wound around the metal rod at the time of manufacturing the tube main body, a level difference is generated between the end portion of the single winding and the start end portion of the double winding and between the end portion of the double winding and the start end portion of the triple winding, but in the tube main body 40 of the first embodiment, since the three layers of the first cylindrical carbon fiber layer 41a, the second cylindrical carbon fiber layer 41b, and the third cylindrical carbon fiber layer 41c are independent layers, such a level difference is not generated. Therefore, the tube main body 40 is formed with a uniform thickness and has uniform rigidity as a whole.
[ first connecting pipe portion ]
Fig. 6 is a perspective view showing a body portion of a first connecting tube portion in an extension tube according to a first embodiment, fig. 7 is a perspective view seen from an outer side (outer surface side) of a pressing member of the first connecting tube portion in the extension tube according to the first embodiment, and fig. 8 is a perspective view seen from an inner side (inner surface side) of the pressing member of fig. 7. Fig. 9 is a longitudinal sectional view of the extension pipe of the first embodiment on the first connection pipe side, and fig. 10 is a transverse sectional view of the extension pipe of the first embodiment on the first connection pipe side.
As shown in fig. 3 and 6 to 10, the first connecting tube portion 50 includes a body portion 51, a pressing member 52, and a screw 53 as a fixing tool for attaching the pressing member 52 to the body portion 51.
Main body section
As shown in fig. 3, 6, 9, and 10, the main body 51 includes: a cylindrical insertion portion 51a inserted into one end 40a of the tube main body 40; a cylindrical connecting portion 51b which is connected to the insertion portion 51a, protrudes outside the pipe main body 40, and is connected to the cleaner main body 10; and a flange 51c and a rotation restricting rib 51d provided on an outer surface of a boundary between the insertion portion 51a and the connection portion 51 b.
The body portion 51 has a positioning convex portion 51e on an outer surface 51aa of the insertion portion 51a, which engages with the notch portion 43 in a state where the insertion portion 51a is inserted into the one end 40a of the tube main body 40, and a cylindrical convex portion 51f on which a screw 53 is screwed is provided on the positioning convex portion 51 e. The boss 51f projects outward in the radial direction of the body 51 from the positioning projection 51 e.
The positioning protrusion 51e extends from the rotation restricting rib 51d in the longitudinal direction of the outer surface 51aa of the insertion portion 51a, and the height H from the outer surface 51aa of the insertion portion 51a is set to be slightly higher than the thickness T5 (see fig. 4) of the tube main body 40. In the present embodiment, the positioning protrusion 51e is formed by forming a U-shaped rib on the outer surface 51aa of the insertion portion 51a, and the protrusion 51f is formed on the positioning protrusion 51e including the inner space of the U-shaped rib.
The connecting portion 51b connected to the insertion portion 51a is a portion that is entirely inserted into the suction pipe portion 11a (see fig. 1) of the cleaner body 10. That is, the terminal holding portion of the first connecting pipe portion in the conventional extension pipe (see patent document 1) is not present between the insertion portion 51a and the connection portion 51 b. Therefore, the overall length of the body portion 51 of the first connecting tube portion 50 of the present embodiment is shortened, and the weight is reduced accordingly.
Further, the outer surface of the connecting portion 51b is provided with: the locking recess 51ba that is locked to the locking claw of the first locking mechanism provided in the suction pipe 11a of the cleaner body 10 so as to be able to be locked and released; and a pair of guide protrusions 51bb slidably engaged with a pair of grooves (not shown) extending in the tube longitudinal direction provided in the suction tube 11a of the cleaner body 10. In the case of the present embodiment, the locking recess 51ba is disposed in the vicinity of the opening end portion in the outer surface of the connecting portion 51b at the same position (corresponding position) in the circumferential direction as the boss portion 51f, and the pair of guide protrusions 51bb is disposed in the vicinity of the rotation restricting rib 51d in the outer surface of the connecting portion 51b at both side positions in the circumferential direction with respect to the boss portion 51 f.
The rotation restricting rib 51d provided in connection with the flange portion 51c is a rib for restricting rotation about a boss portion 51f of a pressing member 52, which will be described later, attached to the boss portion 51 f.
The rotation restricting rib 51d is formed thinner than the thickness of the flange portion 51c, and has a pair of flat portions 51da adjacent to the flange portion 51c and an arc-shaped portion 51db between the pair of flat portions 51 da.
Press Member
As shown in fig. 7, 8, and 10, the pressing member 52 is a member that bends along the outer surface of the tube main body 40 in a state where the pressing member 52 is attached to the main body 51, and has a pair of concave curved surface portions 52a that can contact the outer surface of the tube main body 40 on the inner surface (see fig. 8) side and a positioning rib 52b that positions a pin-shaped power receiving terminal 82, which will be described later, provided at each end of the pair of conductive wires 80 on the outer surface (see fig. 7) side.
The positioning rib 52b has a pair of positioning recesses 52ba into which the pair of pin-shaped power receiving terminals 82 are fitted for positioning.
The pressing member 52 has a mounting hole 52c between the pair of concave curved surface portions 52a, the mounting hole 52c having a fitting groove 52d for engaging with the rotation restricting rib 51d of the main body portion 51 of the first connecting pipe portion 50 adjacent to the pair of concave curved surface portions 52a, through which the boss portion 51f is inserted in a state where the pressing member 52 is mounted to the main body portion 51.
The portion between the pair of concave curved surface portions 52a where the mounting hole 52c is provided is recessed at substantially the same depth as the engaging groove 52d, and a pair of ribs 52f fitted in the space inside the positioning convex portion 51e of the main body portion 51 are provided in the recessed space.
The pressing member 52 has a pair of convex curved surfaces 52e on the outer surface, and the pair of convex curved surfaces 52e are pressed toward the tube main body 40 by a second member 72, described later, of the cover member 70 in a state where the pressing member 52 is attached to the main body 51. The convex curved surface portions 52e and the concave curved surface portions 52a are disposed at positions corresponding to each other.
Ribs are provided around the pair of convex curved surface portions 52e on the outer surface of the pressing member 52, and each convex curved surface portion 52e serves as a bottom surface of a recess surrounded by the ribs. The bottom surfaces of these recesses are deepened at locations separated from the mounting holes 52c in the circumferential direction, and a pair of pressing ribs 72d (see fig. 10) of a second member 72 (described later) of the cover member 70 are positioned by a pair of ribs 52ea (see fig. 10) adjacent to the deepened locations of the recesses. In addition, it will be described in detail later.
[ second connecting pipe portion ]
Fig. 11 is a longitudinal sectional view of the extension pipe of the first embodiment on the second connection pipe side.
As shown in fig. 3 and 11, the second connecting pipe portion 60 includes a main body portion 61, a cover portion 62, and a screw 63 as a fixture for attaching the cover portion 62 to the main body portion 61.
The main body 61 has: a cylindrical insertion portion 61a inserted into the other end of the tube main body 40; a cylindrical exposed portion protruding from the insertion portion 61a to the outside of the tube main body 40; and a flange portion 61d provided on an outer surface of a boundary between the exposed portion and the insertion portion 61 a.
The insertion portion 61a has a positioning convex portion 61aa protruding from the flange portion 61d in the tube longitudinal direction on the outer surface. The positioning protrusion 61aa is fitted into the notch 44 on the other end 40b side of the tube main body 40.
The exposure portion has: a connecting portion 61b provided in connection with the insertion portion 61 a; and a terminal holding portion 61c provided on the outer surface of the connecting portion 61b and at the other end of each of the pair of conductive wires 80.
The connecting portion 61b has a hole 61ba in a peripheral wall on the terminal holding portion 61c side, and the hole 61ba is inserted by a locking claw 91c of a swinging member 91 described later as one of the components of the lock mechanism portion 90.
The terminal holding portion 61c has a rib structure portion that holds a pair of clip-shaped power supply terminals 83 and a lock mechanism portion 90, which will be described later, and has a boss portion 61ca in the rib structure portion to which the screw 63 is screwed. Further, the end portion on the other end side of the rib structure has a pair of holes (not shown) into which the pair of pin-shaped power receiving terminals connected to the connection pipe portion 103 of the suction port body 100 of the second connection pipe portion 60 are inserted.
The cover portion 62 has a hole portion 62a through which the lock release button 91b of the swing member 91 of the lock mechanism portion 90 is inserted and a hole portion 62b through which the screw 63 is inserted, and is attached to the terminal holding portion 61c by the screw 63 screwed to the boss portion 61ca, thereby covering the clip-shaped power supply terminal 83.
[ cover Member ]
As shown in fig. 3, 9, and 10, the cover member 70 includes: an elongated first member 71 having substantially the same length as the tube body 40; and a second member 72 provided on one end side of the first member 71.
The first member 71 is a portion covering the pair of conductive wires 80 and a wire 94, which will be described later, of the lock mechanism portion 90, and a pair of ribs (not shown) extending in the longitudinal direction are provided on the inner surface side of the first member 71 such that the pair of conductive wires 80 are disposed on both sides in the first member 71 and the wire 94 can be disposed so as to be divided between the pair of conductive wires 80. In addition, the ribs may be provided intermittently in the longitudinal direction.
A wide portion 71a formed to be wide is provided on one end side of the first member 71, and a lock release lever 93a of a second slide member 93, which will be described later, of the lock mechanism 90 is slidably supported on the wide portion 71 a. Further, at one end of the wide portion 71a, a hole portion 71aa through which the boss portion 51f of the first connecting tube portion 50 is inserted and a hole portion 71ab through which one end of the wire 94 of the lock mechanism portion 90 is inserted are provided.
The second member 72 has a hole 72a through which the lock release lever 93a is inserted and a cylindrical hole 72b through which the screw 53 is inserted. The cylindrical hole portion 72b has an inner diameter larger than the outer diameter of the boss portion 51f of the first connecting pipe portion 50, and the inner surface thereof is provided with an inner flange portion 72ba abutting against the upper surface of the boss portion 51 f.
The second member 72 is attached to the first connecting pipe portion 50 by the screw 53 screwed to the boss portion 51f of the first connecting pipe portion 50, thereby covering a part of the second sliding member 93 on the one end 40a side of the pipe main body 40 and the pressing member 52. In this way, a part of the pair of pin-shaped power receiving terminals 82 (a part extending from the vicinity of the middle portion in the longitudinal direction to the connection portion with the lead wire 81) is sandwiched and fixed by the pressing member 52 and the second member 72. At this time, the vicinity of the intermediate portion of the pair of pin-shaped power receiving terminals 82 is sandwiched by the positioning recessed portion 52ba of the pressing member 52 and the U-shaped notch portion 72ca of the second member 72. An end wall 72c is provided on one end side of the second member 72, and the end wall 72c has a pair of U-shaped notches 72ca through which the pair of pin-shaped power receiving terminals are inserted.
Also, the second member 72 has a pair of pushing ribs 72d projecting from the inner surface thereof to extend in the tube length direction. Since the pair of pressing ribs 72d of the second member 72 are provided at the left and right positions of the first connecting tube portion 50 away from the boss portion 51f, a pair of conductive wires 80, which will be described later, and a wire 94, which will be described later, of the lock mechanism portion 90 can pass through a space between the pair of pressing ribs 72 d.
When the second member 72 is attached to the first connecting tube portion 50, the pair of pressing ribs 72d abut against and press the pair of convex curved surfaces 52e of the pressing member 52. At this time, since the angle formed by each pressing rib 72d and each convex curved surface portion 52e is not a right angle, the pressing force applied to each convex curved surface portion 52e of each pressing rib 72d is easily dispersed in the circumferential direction. Therefore, in the present embodiment, the pressing ribs 72d are positioned by the pair of ribs 52ea of the pressing member 52, and the pressing force of the pressing ribs 72d is intensively applied to the corner portions N between the pair of ribs 52ea and the convex curved surface portions 52 e.
Thereby, the pair of concave curved surface portions 52a of the pressing member 52 can strongly contact the outer surface 40c of the tube main body 40. In this way, the one end 40a of the tube main body 40 is sandwiched between the outer surface 51aa of the insertion portion 51a of the first connecting tube portion 50 inserted into the one end 40a of the tube main body 40 and the pair of concave curved surface portions 52a as the inner surfaces of the pressing members 52, and the sandwiched state can be held by the screws 53 as the fixing tool.
Therefore, when the one end 40a of the pipe body 40 and the insertion portion 51a of the first connecting pipe portion 50 are bonded by the adhesive, the one end 40a of the pipe body 40 can be sandwiched and held by the insertion portion 51a of the first connecting pipe portion 50 and the pressing member 52 in addition to the bonding strength of the adhesive, and therefore, the tensile strength can be increased with respect to the external force in the tensile direction in which the pipe body 40 and the first connecting pipe portion 50 are separated from each other.
In addition, the pipe main body 40 may be screwed with the insertion portion 51a of the first connection pipe portion 50 to further improve the tensile strength.
[ conductive wire ]
Each of the pair of conductive wires 80 includes a lead wire 81 covered with an insulating material, a pin-shaped power receiving terminal 82 welded to one end of the lead wire 81, and a clip-shaped power supply terminal 83 welded to the other end of the lead wire 81. The lead wire 81 and the pin-shaped power receiving terminal 82 may be joined by spot welding, caulking, or the like, in addition to welding.
[ locking mechanism part ]
As shown in fig. 2, 3, 9, and 11, the lock mechanism portion 90 includes: a swinging member 91 and a first sliding member 92 disposed between the main body portion 61 and the cover portion 62 of the second connecting pipe portion 60; a second slide member 93, a part of which is disposed between the wide portion 71a of the first member 71 of the cover member 70 and the second member 72; a wire 94 connecting the first slide member 92 and the second slide member 93; and a biasing member 95.
The swing member 91 includes a shaft portion 91a, the lock release button 91b provided to be connected to the other end of the shaft portion 91a, and the locking claw 91c provided to be connected to one end of the shaft portion 91 a.
The swing member 91 is provided in the terminal holding portion 61c of the main body portion 61 of the second connecting pipe portion 60 and is pressed by the cover portion 62, whereby the lock release button 91b is exposed to the outside from the hole portion 62a of the cover portion 62 and the locking claw 91c protrudes into the pipe from the hole portion 61ba of the main body portion 61. In the swing member 91, the lock release button 91b and the locking claw 91c swing about the shaft portion 91a as a fulcrum.
The biasing member 95 is provided between the terminal holding portion 61c of the body portion 61 and the lock release button 91b of the swing member 91, and biases the lock release button 91b to protrude from the hole portion 61ba to the outside and the locking claw 91c to protrude inside the tube. In the present embodiment, a compression coil spring is used as the urging member 95, but a torsion spring, a leaf spring, or the like may be used. The first slide member 92 is formed in a substantially U-shape and is provided in the terminal holding portion 61c of the body portion 61 of the second connecting tube portion 60 so as to be slidable in the tube longitudinal direction. In addition, the function of the first slide member 92 will be described in detail later.
The second slide member 93 has the lock release lever 93a, and the lock release lever 93a protrudes to the outside from the hole portion 72a of the second member 72 of the cover member 70.
The wire 94 is a metal wire in the present embodiment, and a flexible wire may be used.
According to this lock mechanism portion 90, the lock release lever 93a is pulled in the arrow a direction (see fig. 2) to move the second slide member 93 to the one end side, whereby the first slide member 92 is moved to the one end side while being in sliding contact with the swing member 91 via the wire 94. At this time, the first slide member 92 swings the swing member 91 against the urging force of the urging member 95, and the locking claw 91c moves in the direction opposite to the direction of protruding from the inside of the tube.
Therefore, when the suction port body 100 is removed from the extension pipe 30, the user presses the suction port body 101 of the suction port body 100 against the floor surface with his or her feet and pulls the lock release lever 93a with his or her fingers, whereby the locking claw 91c is disengaged from the locking recess of the tip 103b (see fig. 1) of the connection pipe portion 103 of the suction port body 100, and the extension pipe 30 is pulled in this state, whereby the extension pipe 30 can be pulled out from the connection pipe portion 103 of the suction port body 100. That is, the user can remove the suction port body 100 from the extension pipe 30 in a comfortable posture in a standing state without stooping. Further, the lock release button 91b may be pressed to remove the suction port body 100 from the extension pipe 30.
< Assembly on the first connecting pipe side of extension pipe >
Fig. 12(a) to (D) are views for explaining the assembly steps of the extension pipe on the first connection pipe side according to the first embodiment.
When the extension pipe is assembled to the first connecting pipe portion 50 side, as shown in fig. 3, 6, and 12(a), an adhesive is applied to an outer surface 51aa of the insertion portion 51a of the body portion 51 of the first connecting pipe portion 50.
Next, as shown in fig. 3, 6, and 12(B), the insertion portion 51a of the body portion 51 is inserted into the one end 40a of the tube main body 40. At this time, the positioning convex portion 51e of the insertion portion 51a is fitted into the notch portion 43 of the tube main body 40.
Small holes 51ax and 40x for inserting screws are formed in the insertion portion 51a and the tube main body 40 in advance, and after the insertion portion 51a is inserted into the tube main body 40 (the state of fig. 12B), the screws are tightened to the respective small holes 51ax and 40x overlapped with each other.
Next, as shown in fig. 3, 6 to 8, and 12(C), the pressing member 52 is provided on the tube main body 40 such that the boss portion 51f of the main body portion 51 is inserted through the attachment hole 52C of the pressing member 52. At this time, the engagement groove 52d of the pressing member 52 is fitted into and positioned on the rotation restricting rib 51d of the main body 51.
Next, as shown in fig. 3, 6 to 8, and 12(D), the pair of conductive wires 80 and the wire 94 of the lock mechanism portion 90 are provided in the first member 71 of the cover member 70, the boss portion 51f is inserted into the hole portion 71aa on one end side of the first member 71, and the pin-shaped power receiving terminals 82 of the pair of conductive wires 80 are fitted into the pair of positioning recessed portions 52ba of the pressing member 52 and positioned.
Then, as shown in fig. 3, 9, and 12(D), the second slide member 93 of the lock mechanism 90 is provided on the wide portion 71a of the first member 71, and the bent portion at one end of the wire 94 is caught by the second slide member 93. Then, as shown in fig. 3 and 10, the pressing member 52 and the second member 72 are fixed to the one end 40a side of the tube main body 40 by covering a part of the second sliding member 93 and the pressing member 52 with the second member 72 of the cover member 70 and tightening the screw 53 to the boss 51 f.
Thus, the pair of pressing ribs 72d of the second member 72 press the corner portions N between the pair of convex curved surface portions 52e and the pair of ribs 52ea on the outer surface side of the pressing member 52, whereby the one end 40a of the tube main body 40 can be sandwiched between the pair of concave curved surface portions 52a on the inner surface side of the pressing member 52 and the outer surface 51aa of the insertion portion 51a of the main body 51.
< Assembly on the second connecting pipe side of extension pipe >
When the extension pipe is assembled to the second connecting pipe portion 60 side, as shown in fig. 3 and 11, an adhesive is applied to the outer surface of the insertion portion 61a of the body portion 61 of the second connecting pipe portion 60.
Next, the insertion portion 61a of the body portion 61 is inserted into the other end 40b of the tube body 40. At this time, the positioning convex portion 61aa of the insertion portion 61a is fitted into the notch portion 44 of the tube main body 40.
In addition, small holes for inserting screws are formed in the insertion portion 61a and the tube main body 40 in advance, and after the insertion portion 61a is inserted into the tube main body 40, the screws can be tightened to the respective small holes that overlap each other.
Next, in the terminal holding portion 61c of the main body portion 61, there are provided: the clip-shaped power supply terminals 83 of the pair of conductive wires 80, and the first slide member 92, the swing member 91, and the biasing member 95 connected to the wire 94 of the lock mechanism portion 90. Then, the terminal holding portion 61c is covered with the cover portion 62, and the cover portion 62 is fixed to the body portion 61 by tightening the screw 63 to the boss portion 61 ca. Thereby, the end portion on the other end side of the cover member 70 (first member 71) is pushed into the tube main body 40 from the end portion on the one end side of the cover portion 62.
< actions on electric vacuum cleaners >
As shown in fig. 1, when the electric blower is driven by turning ON (ON) the operation switch of the drive device 11 of the cleaner body 10, dust ON the floor is sucked into the suction port 101a of the suction port body 100 together with air, and flows into the suction pipe portion 11a of the drive device 11 through the suction port body 100 and the extension pipe 30. The air containing dust flowing into the suction pipe 11a is sent into the dust collection container 12a, and first dust having a relatively large size is centrifugally separated and accumulated in the dust collection container 12a or captured by the mesh member of the inner cylindrical portion. Then, air containing second dust smaller than the first dust intrudes into the inner cylindrical portion, and the second dust is captured by the filter main body. The air passing through the filter main body passes through the electric blower housing portion 11c of the drive device 11 and is discharged to the outside from an unillustrated exhaust port.
When performing dust collection by the electric vacuum cleaner, electric power of the battery 13 is supplied to the drive motor in the suction port body 100 via a wiring system including a terminal connection portion electrically connecting the drive device 11 and the extension pipe 30 and a terminal connection portion electrically connecting the extension pipe 30 and the suction port body 100, and thereby the drive motor is driven to rotate the rotary brush 101 b.
Further, as described above, the suction port body 100 can be removed from the extension pipe 30 by pulling the lock release lever 93a, or the suction port body 100 can be removed from the extension pipe 30 by pressing the lock release button 91b, and a brush suction nozzle, a narrow nozzle, or the like as another suction tool can be connected to the extension pipe 30.
(second embodiment)
In the first embodiment, the second connecting tube portion 60 of the extension tube 30 is provided with the terminal holding portion 61c on the outer surface of the connecting portion 61b of the main body portion 61, but the terminal holding portion 61c may be provided as a separate member like the pressing member 52 of the first connecting tube portion 50. That is, the extension pipe (not shown) of the second embodiment includes a first connecting pipe portion configured in the same manner as the first connecting pipe portion 50 of the first embodiment and connected to the one end 40a of the pipe main body 40, and includes a second connecting pipe portion configured in the same manner as the first connecting pipe portion 50 of the first embodiment (including the pressing member) and connected to the other end 40b of the pipe main body 40. In this case, the first slide member 92 and the second slide member 93 of the lock mechanism 90 provided in the first embodiment, and the wire 94 connecting them are omitted.
In the case of the second connecting tube portion in the second embodiment, the space for installing the first slide member 92 provided on the outer surface of the connecting portion 61b of the body portion 61 in the second connecting tube portion 60 in the first embodiment can be omitted. Therefore, in the second embodiment, the length of the connecting portion and the length of the cover portion can be shortened, and the weight of the entire second connecting pipe portion can be reduced. In the case of the second embodiment, since the second connecting tube portion includes the pressing member, the following configuration is sufficient: ribs for holding a pair of clip-shaped power supply terminals are provided on the outer surface of the pressing member, and the swinging member 91 and the urging member 95 of the lock mechanism portion 90 are held by the ribs of the pressing member. The pressing member may be pressed against the outer surface of the tube main body 40 by the cover portion.
According to the extension pipe of the second embodiment, the extension pipe can be further reduced in weight by shortening the second connection portion and reducing the number of parts of the lock mechanism portion.
(third embodiment)
The conductive wire 80 in the extension pipe of the second embodiment and the cover member 70 may be omitted.
In the case of the third embodiment, the pressing member 52 may be directly pressed against the outer surface of the tube main body 40 by the screw 53 in the first connecting tube portion. The outer surface of the pressing member 52 is a convex curved surface that is smoothly continuous with the outer surface of the tube main body 40, without the positioning rib 52 b.
According to the extension pipe of the third embodiment, the extension pipe can be further reduced in weight, and can also be applied to a suction port body that does not include a motor-driven rotary brush.
(conclusion)
The extension pipe of the electric dust collector comprises a long and thin pipe main body made of dry carbon fiber and a connecting pipe part arranged at least one end of the pipe main body;
the connecting pipe portion includes: a main body portion having a tubular insertion portion inserted into the one end of the tube main body and a tubular connection portion protruding to the outside of the tube main body and connected to a cleaner main body side or a suction appliance side; and a curved plate-like pressing member attached to the main body by a fixing tool;
the pressing member has a concave curved surface portion which can abut against an outer surface of the one end of the tube main body,
and is constituted as follows: the one end of the tube main body is sandwiched between an outer surface of the insertion portion of the connection tube portion inserted into the one end and the concave curved surface portion of the pressing member, and the sandwiched state is maintained by the fixing tool.
According to this configuration, when the one end of the pipe main body and the insertion portion of the connecting pipe portion are bonded by the adhesive, the one end of the pipe main body can be sandwiched and held by the insertion portion of the connecting pipe portion and the pressing member in addition to the bonding strength of the adhesive, and therefore, the tensile strength can be increased with respect to the external force in the tensile direction in which the pipe main body and the connecting pipe portion are separated from each other.
The extension pipe of the electric vacuum cleaner of the present invention may be configured as follows, and they may be appropriately combined.
The connecting portion may be provided in connection with the insertion portion.
With this configuration, the overall length of the connecting pipe portion can be reduced, and the connecting pipe portion can be made lightweight. Therefore, when the connecting tube portion is formed of a resin having a higher specific gravity than the dry carbon fibers, the weight of the connecting tube portion can be reduced, and the weight of the entire extension tube can be further reduced. That is, in the conventional extension pipe (see patent document 1), since the terminal holding portion is provided between the insertion portion of the connecting pipe portion and the connecting portion, the entire length of the connecting pipe portion is made longer than the length of the terminal holding portion, but in the present invention, the entire length of the connecting pipe portion is made shorter than the length of the terminal holding portion, and therefore, weight reduction can be achieved by the amount of length reduction.
The tube main body may have a notch portion for positioning the connection tube portion at an opening end edge of the one end,
the connection pipe portion may have a positioning convex portion on an outer surface of the insertion portion, the positioning convex portion engaging with the cutout portion in a state where the insertion portion is inserted into the one end of the pipe main body, and a protruding portion on which a screw serving as the fixing tool is screwed.
According to this configuration, since the projection portion to which the screw as the fixing tool for attaching the pressing member to the connecting tube portion is screwed can be disposed on the positioning projection portion for positioning (stopping rotation) the connecting tube portion with respect to the tube main body, the structure of the connecting tube portion can be simplified, and convenience can be achieved.
The pressing member may have a mounting hole through which the boss is inserted,
the body portion may have a rotation restriction rib at a boundary between the insertion portion and the connection portion, the rotation restriction rib restricting rotation of the boss portion of the pressing member, as an axis, in which the boss portion is inserted through the mounting hole.
According to this configuration, the pressing member can be easily positioned at the position of the boss portion.
The present invention may further include: a cover member provided along a longitudinal direction of an outer surface of the tube main body; and a conductive wire provided between the tube main body and the cover member;
the end portion of the cover member on the one end side may be configured to be pressed against the pressing member by the fixing tool.
According to this configuration, the suction port body including the rotary brush rotationally driven by the electric motor can be connected to the cleaner main body, and the electric power can be supplied from the cleaner main body to the electric motor of the suction port body via the electric wire of the extension pipe. Further, the conductive wire of the extension pipe can be covered with the cover member, and both the fixing of the cover member by the fixing tool and the pressing of the pressing member can be performed at one location, which is convenient.
The conductive line may have terminal portions on the one end side and the other end side opposite to the one end side respectively,
the pressing member may have a positioning rib on an outer surface thereof to position the terminal portion on the one end side of the conductive wire.
According to this configuration, the pressing member can be used as a support member for supporting the terminal portion of the conductive wire, which is convenient.
The connecting pipe portion may be provided at both the one end and the other end opposite to the one end in the longitudinal direction of the pipe main body.
According to this configuration, the same operational effects as those obtained by the connection pipe portion provided at the one end of the pipe main body can be obtained by the connection pipe portion provided at the other end of the pipe main body.
The disclosed embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the present invention is indicated not by the description but by the claims, and all changes which come within the meaning and range of equivalency of the claims are intended to be embraced therein.
Claims (8)
1. An extension pipe of an electric dust collector is characterized in that,
the dry carbon fiber pipe comprises a dry carbon fiber elongated pipe body and a connecting pipe portion provided at least one end of the pipe body;
the connecting pipe portion includes: a main body portion having a tubular insertion portion inserted into the one end of the tube main body and a tubular connection portion protruding to the outside of the tube main body and connected to a cleaner main body side or a suction appliance side; and a curved plate-like pressing member attached to the main body by a fixing tool;
the pressing member has a concave curved surface portion which can abut against an outer surface of the one end of the tube main body,
and is constituted such that: the one end of the tube main body is sandwiched between an outer surface of the insertion portion of the connection tube portion inserted into the one end and the concave curved surface portion of the pressing member, and the sandwiched state is maintained by the fixing tool.
2. The extension pipe of the electric cleaner as claimed in claim 1,
the connecting part is connected with the inserting part.
3. The extension pipe of the electric cleaner as claimed in claim 1 or 2,
the tube main body has a notch portion for positioning the connection tube portion at an opening end edge of the one end,
the connecting pipe portion has a positioning convex portion on an outer surface of the insertion portion, the positioning convex portion engaging with the notch portion in a state where the insertion portion is inserted into the one end of the pipe main body, and a protruding portion on which a screw serving as the fixing tool is screwed.
4. The extension pipe of the electric cleaner as claimed in claim 3,
the pressing member has a mounting hole through which the projection is inserted,
the body portion has a rotation restriction rib at a boundary between the insertion portion and the connection portion, the rotation restriction rib restricting rotation of the boss portion of the pressing member, as an axis, in which the boss portion is inserted through the mounting hole.
5. The extension pipe of the electric vacuum cleaner according to any one of claims 1 to 4, further comprising:
a cover member provided along a longitudinal direction of an outer surface of the tube main body; and
a conductive wire disposed between the tube body and the cover member;
the end portion of the cover member on the one end side is configured to be pressed against the pressing member by the fixing tool.
6. The extension pipe of the electric cleaner as claimed in claim 5,
the conductive line has terminal portions on the one end side and the other end side opposite to the one end side,
the pressing member has a positioning rib on an outer surface thereof for positioning the terminal portion on the one end side of the conductive wire.
7. The extension pipe of electric vacuum cleaner as claimed in any one of claims 1 to 6,
the connecting pipe portion is provided at both the one end and the other end opposite to the one end in the longitudinal direction of the pipe main body.
8. An electric vacuum cleaner is characterized by comprising:
an extension pipe of the electric cleaner as claimed in any one of claims 1 to 7;
a cleaner main body detachably connected to the one end of the extension pipe; and
and a suction tool detachably connected to the other end of the extension pipe opposite to the one end.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019060546A JP7154170B2 (en) | 2019-03-27 | 2019-03-27 | Vacuum cleaner extension tube and vacuum cleaner with the same |
| JP2019-060546 | 2019-03-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111743456A true CN111743456A (en) | 2020-10-09 |
Family
ID=72640622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010219820.5A Pending CN111743456A (en) | 2019-03-27 | 2020-03-25 | Extension pipe of electric dust collector and electric dust collector with the same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7154170B2 (en) |
| CN (1) | CN111743456A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20240038221A (en) * | 2022-09-15 | 2024-03-25 | 삼성전자주식회사 | Composite pipe for home appliance and vacuum cleaner including same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1145770A (en) * | 1994-12-26 | 1997-03-26 | 大宇电子株式会社 | Suction tube mounted with auxiliary brush of vacuum cleaner |
| JPH11206655A (en) * | 1998-01-20 | 1999-08-03 | Mitsubishi Electric Corp | Vacuum cleaner |
| JP2011030679A (en) * | 2009-07-31 | 2011-02-17 | Hitachi Appliances Inc | Vacuum cleaner |
| CN102743127A (en) * | 2011-04-18 | 2012-10-24 | 日立空调·家用电器株式会社 | Suction device and electric dust collector |
| CN104257326A (en) * | 2011-03-15 | 2015-01-07 | 日立空调·家用电器株式会社 | Electric Vacuum Cleaner |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3572778A (en) * | 1969-05-26 | 1971-03-30 | Cassel Thomas Richard | Pipe coupling |
| GB2324712A (en) * | 1997-04-30 | 1998-11-04 | Daewoo Electronics Co Ltd | Apparatus for connecting vacuum cleaner brush to wand |
| JP2014042733A (en) * | 2012-08-28 | 2014-03-13 | Toshiba Corp | Extension pipe and vacuum cleaner |
| JP6715065B2 (en) * | 2016-04-18 | 2020-07-01 | シャープ株式会社 | Vacuum cleaner |
| WO2018087936A1 (en) * | 2016-11-09 | 2018-05-17 | シャープ株式会社 | Extension tube for electric vacuum cleaner |
| JP2018149256A (en) * | 2017-03-13 | 2018-09-27 | タイガースポリマー株式会社 | Connection structure of vacuum cleaner hose and manufacturing method of hose assembly having the connection structure |
-
2019
- 2019-03-27 JP JP2019060546A patent/JP7154170B2/en active Active
-
2020
- 2020-03-25 CN CN202010219820.5A patent/CN111743456A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1145770A (en) * | 1994-12-26 | 1997-03-26 | 大宇电子株式会社 | Suction tube mounted with auxiliary brush of vacuum cleaner |
| JPH11206655A (en) * | 1998-01-20 | 1999-08-03 | Mitsubishi Electric Corp | Vacuum cleaner |
| JP2011030679A (en) * | 2009-07-31 | 2011-02-17 | Hitachi Appliances Inc | Vacuum cleaner |
| CN104257326A (en) * | 2011-03-15 | 2015-01-07 | 日立空调·家用电器株式会社 | Electric Vacuum Cleaner |
| CN102743127A (en) * | 2011-04-18 | 2012-10-24 | 日立空调·家用电器株式会社 | Suction device and electric dust collector |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2020156843A (en) | 2020-10-01 |
| JP7154170B2 (en) | 2022-10-17 |
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Application publication date: 20201009 |