JP3299420B2 - Electric vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner having an extension pipe provided with a structure for supplying power to a floor suction tool which incorporates electric components such as a rotary brush driving motor.

[0002]

2. Description of the Related Art Conventionally, there has been a vacuum cleaner provided with an extension pipe having a power supply structure for a floor suction tool having a built-in motor for driving a rotary brush, as disclosed in, for example, JP-A-1-310626. FIG. 34 is a sectional view of a main part of the extension pipe,
FIG. 35 is a perspective view of an extension pipe. In the figure, reference numeral 201 denotes a telescopic extension pipe, and a large-diameter pipe 202 and a small-diameter pipe 203 which are slidably fitted to each other in the axial direction, and a large-diameter pipe to which these fit. An adjusting tool 205 having a tightening tool 204 for freely adjusting the length of the pipe 202 and the small-diameter pipe 203 is provided. Reference numeral 206 denotes a pair of connection fixing plates made of a conductive material provided on the outer surface of the end of the small-diameter pipe 203, and one end thereof is connected to the electric wire 20 embedded in the small-diameter pipe 203.
7 is connected. Reference numeral 208 denotes a pair of connection movable plates made of a conductive material which are provided on the inner surface of the end of the large-diameter pipe 202 and are electrically elastically mounted on the pair of connection fixing plates 206 when the extension tube 201 is in the longest position. Diameter pipe 20
2 is connected to an electric wire 209 buried in 2. When the connection fixing plate 206 is provided only at the outer surface end of the small diameter pipe 203, the connection fixing plate 206 and the connection movable plate 208 are connected only at the longest time of the extension pipe 201.
As shown in FIG. 7, a plurality of connection fixing plates 206 are provided on the outer surface of the small-diameter pipe 203, and a cover member 210 is provided on the connection fixing plate 206 in order to prevent the connection fixing plate 206 from being exposed to the outside and receiving an electric shock. The extension pipe 201
Is freely adjusted by the adjusting tool 205 in accordance with the height and the like of the user.

[0003]

However, in the conventional telescopic extension tube 201, since a cover member must be provided on each connection fixing plate 206, not only the structure becomes complicated, but also when the extension tube is used. Extension pipe 20 at
Inside 1, the air containing dust always passes at high speed,
Static electricity due to friction is easily generated between the extension pipe 201 and the inner wall, and the static electricity is charged on the extension pipe 201 and causes floating dust in the room and fine dust passing through the inside of the extension pipe 201 to be covered by the inner wall of the extension pipe 201. And easy to adhere to outer walls. For this reason,
Dust also adheres to the cover member 210 and the cover member 21
There is a problem that the opening and closing operation of the "0" operation is likely to be hindered. Further, the charged static electricity has a property of being easily discharged to a nearby conductive material. For example, when the electric wires 207 and 209 are signal lines of a control microcomputer (hereinafter, abbreviated as a microcomputer), the static electricity is discharged to the microcomputer. There was a risk of destruction.

Further, the extension tube 201 easily collides with furniture and the like, and there is a possibility that the cover member 210 and the connection fixing plate 206 may be deformed or damaged, so that the opening and closing operation of the cover member 210 is likely to be hindered. There was a point.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the extension pipe can be freely extended and contracted as required, and a power supply for power supply is linked to the extension and contraction operation, thereby providing a floor. Power supply to the electrical components provided in the suction device, and to prevent dust from adhering to the power supply body to extend the life and improve the safety. The purpose of the present invention is to improve the safety by preventing breakage and deformation of the power supply conductor even if a collision occurs.

[0006]

[MEANS FOR SOLVING THE PROBLEMS] To achieve the above object
The vacuum cleaner according to the present invention includes a cleaner body, a hose having one end connected to the cleaner body, an extension tube connected to the other end of the hose, and a tip connected to the extension tube. With a floor suction tool that incorporates electric components such as an electric motor,
Wherein is extension tube slidably fitted in each other in large diameter pipes and small diameter pipes can be fixed to any length, and the said cleaner
A power supply for electrically connecting the body and the floor suction tool , wherein the power supply is provided on the outer peripheral surface of the large diameter pipe.
A power supply section provided along the length of the pipe;
Along the length of the diameter pipe and away from the small diameter pipe
One end is electrically connected to the power supply unit, and the other end is
A power supply device fixed to the small-diameter pipe;
The electric tool has a bellows portion .

[0007] Further, the vacuum cleaner according to the present invention comprises a cleaner body, a hose having one end connected to the cleaner body, an extension tube connected to the other end of the hose, and a tip of the extension tube. and a floor suction device having a built-in electrical components such as the connected motor, the said extension tube being slidably fitted to each other large pipes and small diameter pipes can be fixed to any length, and the cleaning The machine body and the floor suction tool are electrically connected.
And a feeder to be connected , wherein the feeder is connected to the large-diameter pipe.
Provided along the length direction of the large-diameter pipe on the outer peripheral surface of the pipe.
Power supply, and along and along the length of the small diameter pipe.
One end is separated from the small diameter pipe and one end is
Power supply with the other end fixed to the small diameter pipe
Tool, the power supply tool is formed of a soft member,
Slidably fits along the length of the power supply section and small diameter pipe
Is what you do.

[0008] In addition, in the vacuum cleaner of the present invention, the
The feeding portion said cleaner main body or electrically connected to the feeding conductor to the floor suction tool on the outer circumferential surface of the large diameter pipe is <br/> disposed, one end the floor in the power supply device suction device or the cleaner is provided electrically connected to the lead in the body use
Re Rutotomoni in which the other end of the lead wire is connected to the terminal plate which slides while in electrical contact with the feeding conductor.

[0009] Further, the vacuum cleaner according to the present invention comprises a cleaner body, a hose having one end connected to the cleaner body, an extension tube connected to the other end of the hose, and a tip of the extension tube. A floor suction device having a built-in electric component such as a motor connected to the extension pipe, wherein the extension pipe has a large-diameter pipe and a small-diameter pipe which are slidably fitted to each other and can be fixed to an arbitrary length, A power supply unit including a power supply conductor that is arranged in parallel with the outer peripheral surface of the large diameter pipe along the length direction thereof and is electrically connected to the electric component of the cleaner body or the floor suction tool;
One end has a terminal plate slidably connected to the power supply conductor, and the other end has a predetermined space between itself and the outer periphery of the small diameter pipe.
And anchored power supply device along the direction, and a movable plate which slides a predetermined space formed in the power supply device and a small diameter pipe is provided, before
The power supply device is located in the upper part and the lower part in the usage state.
And the length of the large diameter portion is
Approximately half the length of the small diameter pipe when the extension pipe is extended
The power supply tool slides on the power supply unit.
The movable plate can be freely stored, and the movable plate
It is configured to be movable .

[0010]

[0011]

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

[0018]

[0019]

[0020]

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, a first embodiment of a vacuum cleaner according to the present invention will be described with reference to FIGS. In FIG. 1 , reference numeral 1 denotes a cleaner main body having a built-in electric blower, 2 denotes a power cord, 3 denotes a suction port,
Is a hose, which comprises a hose body 5 made of a soft material, an insertion port 6 provided at one end of the hose body to be inserted and connected to the suction port 3, and a grip portion 7 provided at the other end.
Reference numeral 8 denotes a remote switch provided on the grip portion 7, which is connected to the cleaner main body via a remote circuit (not shown) provided on the hose 4, and controls operations of the electric blower and a rotating brush described later.

In FIG. 1, reference numeral 9 denotes a floor suction tool, which is a small electric motor (not shown) for supporting a rotating brush (not shown) facing a suction port opened on the lower surface and driving the rotating brush. Built-in. Reference numeral 10 denotes an indicator light provided on the upper surface of the floor suction tool.

Further, reference numeral 11 in FIG. 1 denotes an extension pipe composed of a large-diameter pipe 12 and a small-diameter pipe 13 which are slidably fitted to each other in the longitudinal direction . As shown in FIG. The locking recesses 15 are formed in a plurality of rows of two each at a predetermined interval in the length direction thereof, and shown in FIG.
At the end of the large-diameter pipe 12 on the side from which the small-diameter pipe 13 is pulled out, a stopper 17 including a pair of elastic stopper pieces 16 that engages with the operating portion 14 and the pair of locking recesses 15 is provided. 2 and 3, reference numeral 18 denotes a reduced-diameter end portion provided at one end of the large-diameter pipe 12 for connection to the grip portion 7, and a pair of connection pins 19 protruding from the end surface on the outer peripheral portion, and a sealing packing 20 is provided. Having. 2 and FIG.
Kicking 22 is a pair of plate-shaped feeding conductor which is disposed along the longitudinal direction on the outer peripheral surface of the large-diameter pipe 12, one end member sealing the other end connected to the connection pin 19 via a lead wire 23 17
It is extended to the vicinity.

In the main structure of the extension pipe shown in FIG .
Are guide ribs formed in parallel with the power supply conductors 22 to guide the sliding operation of a terminal plate provided on the small-diameter pipe 13, which will be described later, and to serve as electrical insulation for the power supply conductors. Figure
3, a cover 26 is fixed to the outer peripheral surface of the large-diameter pipe 12 so as to cover the upper surface of the stopper 17, the power supply conductor 22, and the lead wire 23 , as shown in FIGS. A guide port 27 through which the power supply tool of the pipe 13 is inserted is formed, and a guide rib 28 is formed on the inner upper surface. Figure
As shown in FIG. 5, a spring 29 presses the stopper 17 upward. Also, as shown in FIG.
At the end for fitting to the large-diameter pipe 12, a seal ring 31 for sealing between the outer peripheral surface and the inner peripheral surface of the large-diameter pipe 12 is attached. Reference numeral 32 denotes a connection end formed by expanding the inner peripheral surface at the other end of the small-diameter pipe 13, to which the floor suction tool 9 is connected and a connection pin (not shown) of the floor suction tool 9 connected to the end face. A connection concave piece 33 to be connected is provided.

As shown in FIGS. 3, 6 and 9, reference numeral 34 denotes a power supply device which is provided opposite to the outer peripheral surface of the small-diameter pipe 13 and is provided along the length direction thereof, as shown in FIG. the one end fixed to the connecting end 32 of the small diameter pipe 13, a tubular member 35 which is supported in the insertion state into the guide opening 27 of the cover 26 at the other end large-diameter pipe 12, fixed to the end of the cylindrical body Connection terminal plate 38 having its tip contacted with a pair of power supply conductors 22.
And a lead wire 39 disposed in the cylindrical body 35 and electrically connecting the terminal plate 38 and the connection recess 33 to each other. An upper cover 40 covers the connection concave piece 33 and the end of the cylindrical body 35 and holds the end of the cylindrical body. The outer diameter of the end of the small-diameter pipe 13 including the upper cover is changed to the diameter of the large-diameter pipe 12 facing the upper end. It is made to substantially match the outer diameter of the end.

In the vacuum cleaner constructed as described above , when changing the length of the extension tube, when the operating portion 14 of the stopper 17 is pressed as shown in FIG. since the elastic retainer pieces 16 exits locking recess 15 provided in the circumferential surface of the small diameter pipe 1 3 deforms the expanded state, an appropriate length min a small diameter pipe 13 while maintaining this state from the large-diameter pipe 12 When only the pull-out operation is stopped and the pressing operation on the operation section 14 is stopped, the elastic stopper pieces 16 are fitted into the corresponding locking recesses 15 and the extension tube itself is fixed at that length. At this time, the power supply 34 of the small-diameter pipe 13 is
Is moved in the length direction through the guide port 27 in the cover 26, and the terminal plate 38 located at the distal end portion is connected to the pair of power supply conductors 2.
2 slides while maintaining the contact state.
The electric circuit from 9 to the connection concave 33 is always formed.

For this reason, a power supply circuit is formed for the floor suction tool 9 from the cleaner main body 1 through the hose 5 and the extension pipe 11, so that the small electric motor built in the floor suction tool 9 is driven to rotate. You can rotate the brush. And even if the length of the extension pipe 11 is changed, the power supply 3
4 is always connected to the power supply conductor 22 of the large-diameter pipe 12.
Therefore, the power supply circuit to the floor suction tool 9 is always formed. In addition, since the air flow containing dust passes through the extension tube 11 at high speed, static electricity is generated between the extension tube 11 and the inner wall surface of the extension tube, the extension tube itself is charged, and the extension tube 11 is cleaned via the power supply conductor and the lead wire. There is a possibility that electronic components such as a microcomputer of a control circuit provided in the machine body 1 and the grip portion 7 may be adversely affected. Therefore, by forming the extension tube itself from a conductive material such as aluminum, stainless steel, or carbon fiber, static electricity charged from the surface of the extension tube can be discharged into the air. At this time, in the present invention, since the lead wire is further away from the outer peripheral surface of the extension tube by a predetermined distance, the influence of static electricity is small.

Further, at least a portion of the cylindrical body for accommodating the lead wire which faces the outer peripheral surface of the extension tube is formed of, for example, plastic plating on the surface of the cylinder or formed of a metal plate. The influence of the static electricity on the lead wire can be prevented.

When the extension pipe is not used, when the extension pipe is contracted to the shortest state, the opposite ends of the large-diameter pipe 12 and the small-diameter pipe 13, ie, the upper lid 40 of the small-diameter pipe 13 and the large-diameter pipe, Since the end faces of the cover 12 are matched with each other, and the outer diameters of the respective ends are substantially matched in advance, the extension pipe has no portion protruding from the outer peripheral face, and as a result, the extension pipe is damaged when left unattended. Accidents can be prevented.

As described above, according to the first embodiment, the electric circuit formed on the extension pipe is always connected even if the length of the extension pipe is changed by sliding the large-diameter pipe and the small-diameter pipe. because there, the user is also <br/> than Ru can perform cleaning using the rotary brush in a state of being adjusted in advance easy-length extension tube.

Further, since the power supply conductor disposed on the outer peripheral surface of the large diameter pipe is covered with the cover, dust and the like do not adhere to the power supply conductor in an exposed state, and the electrical contact with the terminal plate is prevented. Can be reliably maintained.

Further, since the ribs for guiding the terminal plate along the power supply conductor are provided, the terminal plate slides smoothly and without slipping off the power supply conductor, and the electric circuit is interrupted on the way. Such a defect does not occur.

Also, since the cylindrical body provided on the small diameter pipe is inserted through the guide port provided on the end face of the cover of the large diameter pipe, the extension and contraction operation of the extension pipe can be performed smoothly.
In addition, since the rotation operation is prevented, the fixing mechanism of the extension pipe only has to fix the movement in the axial direction, so that a simple structure can be obtained.

Further, at the ends of the large-diameter pipe and the small-diameter pipe in a state where the extension pipe is contracted to the shortest state, there is no protruding portion on the outer peripheral surface thereof. Disappears.

The same effect can be obtained by providing a large-diameter pipe on the floor suction side and a small-diameter pipe on the grip side.

Embodiment 2 FIG. 1 shows a vacuum cleaner according to a second embodiment of the present invention.
This will be described with reference to FIGS. 10 and 11 , reference numeral 41 denotes a telescopic extension tube which is slidably fitted to each other in the longitudinal direction, and is formed of a large-diameter pipe 42 formed of a plastic material and a conductive material such as stainless steel or aluminum. A small-diameter pipe 43 having a circular cross section, and a fitting recess 44 formed at one end of the large-diameter pipe 42 is fitted to a floor suction tool by a plastic material fixed to the other end of the small-diameter pipe 43. The convex portions 45 are detachably fitted to the grip portions, respectively. Reference numeral 46 denotes a power supply unit integrally formed in the longitudinal direction on the upper part of the large-diameter pipe 42, as shown in FIG.
As described above, a guide port 47 is provided at one end and a pair of connection recesses 48 are provided at the other end, and a pair of rail plates 49 made of a conductive material laid in parallel over the entire length are provided inside. One ends of the pair of rail plates 49 are electrically connected to the connection recesses 48, respectively.

12 and 15, reference numeral 50 denotes an upper guide rib, and reference numeral 51 denotes a lower guide rib, which are formed on the power supply portion 46 so as to be parallel to the rail plate 49, respectively.
Guide linear sliding in the power supply section 46. In addition,
A power supply body for electrically connecting the floor suction tool and the hose is constituted by a power supply section 46 and a power supply tool 52 described later. FIG.
Reference numeral 53 shown in FIGS. 11 and 18 denotes an engagement releasing portion formed opposite to the side surface of the power supply portion 46 near the guide port 47, and releases the engagement between the large-diameter pipe and the small-diameter pipe. FIG.
The power supply tool 52 shown in FIGS. 12 and 13 is formed of a non-conductive material in the shape of a prism and has a predetermined space 5 in the longitudinal direction of the small-diameter pipe 43.
One end is fixed to the upper part of the fitting convex part 45 so as to extend with 4, and the movable end 55 having the other end is housed in the power supply part 46 through the guide port 47. 12 and 18
19, a pair of terminal plates 56 made of a conductive material fixed to the movable end portion 55 is shown in FIG.
As shown in FIG.
From 5, they are exposed as a pair and are respectively in elastic contact with the rail plate 49. Reference numeral 58 shown in FIG. 12 denotes a pair of lead wires housed in the power supply tool 52, one end of which is connected to the terminal plate 56 and the other end of which is the fitting projection 45.
Are electrically connected to a pair of connection pins 59 attached to the upper part of the head.

Reference numerals 60 shown in FIGS. 10 and 18 to 20 denote engagement pieces protruding from the side surface of the movable end portion 55 of the power supply tool 52. When the movable end portion 55 enters the guide port 47,
It is pushed by the side wall of the guide port 47 and moves inward, and after entering the power supply section 46, it protrudes and returns to its original shape. Reference numeral 61 shown in FIGS. 16 and 18 denotes an engagement receiving portion formed in the guide opening 47, which functions as a stopper for the engaging piece 60 for preventing the movable end portion 55 from being detached from the guide opening 47. 10, 19 and
Reference numeral 62 shown in FIG. 20 is a fixed concave portion which is provided between the side walls of the power supply tool 52 and is formed at a constant pitch along the longitudinal direction of the power supply tool 52. 12 is a discharge space formed between the end of the small-diameter pipe 43 and the connection pin 59, and the discharge space 63 is sucked by the electric blower.
Static electricity generated by friction with high-speed air passing through the small-diameter pipe 43 charges the small-diameter pipe 43 made of a conductive material,
This is to play a role of easily causing spontaneous discharge to the connection pin 59 when charged by a predetermined amount. From FIG. 10 to FIG.
Numerals 64 are seal rings provided at both ends of the small-diameter pipe 43 for preventing outside air from entering.

FIG . 13, FIG. 14, FIG. 16, and FIG.
65 the end of the guide opening 47 side of the pair of rails plates 49 are laid in parallel to the feeding section 46, the holding plate provided across its upwardly a predetermined distance is shown, FIG. 1
As shown in FIG. 7, a notch 66 is provided substantially at the center so as to face the notch. The predetermined distance is a height substantially equal to the height of the power supply tool 52. 13, FIG. 14, and FIG. 20, reference numeral 67 denotes a stopper provided on the power supply unit 46 via the compression spring 68 on the holding plate 65. The stopper 67 is located below the notch 66, and the lower end is provided with the fixing recess 62. A fitting piece 69 formed so as to be able to fit is provided to face the fitting piece 69.

In the vacuum cleaner constructed as described above, first, the extension pipe 41 is assembled as shown in FIG. As shown in FIG. 13, when the stopper 67 is inserted while being pushed, as shown in FIG.
5 also enters the power supply section 46 through the guide port 47. At this time, the engagement piece 60 is pushed by the side wall of the guide port 47 and, when located in the power supply section 46, expands outward by its elastic force. When the stopper 67 is released in this state, the fitting piece 69 fits into the fixing recess 62 as shown in FIG.
3 is fixed. In addition, even if the user tries to extend the extension tube 42 more than necessary while pressing the stopper 67 by mistake,
Engaging piece 6 0 prevents disengagement from the engagement receiving portion 61 engaging with the guide hole 47.

The mechanism for preventing disengagement is not limited to the engagement piece 60 and the engagement receiving portion 61. The extension tube 41 is pulled to a specified length or more while the stopper 67 is operated. Another mechanism that does not separate the large-diameter pipe 42 and the small-diameter pipe 43 when trying to extend may be used.

When disassembling by service or the like, the extension pipe 41 is set to the maximum length by operating the stopper 67, and a tool such as a screwdriver is inserted from the disengagement portion 53 and the engaging piece 60 is pressed. What is necessary is just to pull out the small diameter pipe 43. In other words, since the mechanism for dividing the extension pipe is formed in the power feeder, it is very convenient without having to separate the components when the extension pipe is divided for service or the like.

The length of the extension pipe 41 can be adjusted by moving the small-diameter pipe 43 while pressing the stopper 67 as shown in FIG. 13 and releasing the stopper 67 at a predetermined length as shown in FIG. The compression spring 68 causes the fitting piece 69 to move upward and fit into the fixing recess 62, so that the large-diameter pipe 42 and the small-diameter pipe 43 can be freely fixed.

Next, when cleaning is performed, the hose, the extension pipe 41 and the floor suction tool are connected to the main body, the power cord is inserted into the outlet, and the power switch is operated.
Activate the electric parts of the electric blower and floor suction device of the main body. The dust on the floor is sucked together with the air, passes through the floor suction tool, the extension pipe 41 and the hose, catches the dust in the main body, and discharges only the clean air. At this time, the suction air containing dust does not directly touch the power supply unit or the power supply tool because the connection body is provided on the outer circumference of the extension pipe.

According to the second embodiment, the power supply is formed by forming the power supply on the outer peripheral surface of the extendable extension tube 41 which does not face the flow path through which the high-speed air containing dust passes. Since the dust does not directly contact the electrical connection bodies of the rail plate 49 and the terminal plate 56, poor electrical contact due to dust adhesion,
Corrosion or the like of the electrical connection body due to wet dust adhesion can be prevented. The movable end 55 of the power supply tool 52 is provided with a power supply section 46.
By providing the engagement piece 60 for preventing the power supply tool 52 from being detached from the pipe, the small-diameter pipe 43 can be easily prevented from dropping from the large-diameter pipe 42 when the extension pipe 41 is extended. That is,
Since the mechanism for preventing detachment of the member constituting the power supply body is configured in the power supply body, it is possible to reliably prevent the extension pipe from being divided when the extension pipe is extended. In addition, it is possible to prevent deformation of the terminal plate 56 provided on the power supply unit 46 and exposed to the outside. Also, one end is a small-diameter pipe 43.
And the other end is housed and supported by the power supply section 46, so that it also serves to prevent the rotation of the small-diameter pipe 43 and the large-diameter pipe 42 during expansion and contraction operations.

Further, when the extension pipe 41 is divided at the time of service or the like, the engagement piece 6 is operated by operating the engagement release section 53 from the outside while the extension pipe 41 is extended.
This is convenient because the engagement between the engagement receiving portion 61 and the engagement receiving portion 61 can be easily released and can be easily divided. Also shown in FIG. 10 and FIG.
As described above, since the end of the small-diameter pipe 43 protrudes from the movable end 55 in the case of division, the large-diameter pipe 42 and the small-diameter pipe 43 are fitted even when the power feeder is separated. Since the twisting force and the like accompanying the above are not applied to the power supply body, the power supply tool 52 is prevented from being deformed and the like, and the division work is greatly facilitated. In the assembly of the extension pipe 41, the power supply is assembled after the end of the small-diameter pipe 43 is inserted into the large-diameter pipe 42, so that the same effect as the dividing operation can be obtained.

Further, when the power supply 52 slides on the power supply 46, the air in the power supply 46 is compressed by the power supply 52 and hinders the movement of the power supply 52.
3, the power supply 52 can be moved smoothly. The air discharge unit may be provided anywhere in the power supply unit 46.

The extension and contraction of the extension pipe 41 can be adjusted by forming a plurality of fixing recesses 62 along the longitudinal direction on the outer periphery of the power supply tool 52 provided along the longitudinal direction of the small diameter pipe 43. The fitting piece 63 is fitted into the fixing recess 62 by pushing the 67 in and releasing the stopper 67 at a predetermined length.
That is, since a plurality of adjustment mechanisms are formed on the power supply body when adjusting the extension and contraction of the extension tube, the extension and contraction adjustment can be performed in multiple stages, and the extension tube can be made compact without providing an additional adjustment mechanism. As described above, since the small diameter pipe 43 and the power supply tool 52 move integrally in conjunction with each other, the length adjustment can be visually recognized and easily understood, and the operation is simple and reliable.
It is not necessary to form the fixing recess 62 by a separate member. Furthermore ,
Since the extension tube 41 is not provided with expansion / contraction adjustment,
Can be reduced in size. Note that the form of fitting between the stopper 67 and the power supply tool 52 is not limited to this embodiment. In short, the stopper 67 and the power supply tool 52 are detachably fitted by operating the stopper 67. That should be done.

Further, a feeder 46 near the guide opening 47
Since the holding plate 65 that straddles the rail plate 49 and slidably supports the power supply tool 52 therein is provided, the terminal plate 56 slides on the rail plate 49 reliably when the extension and contraction of the extension tube 41 is adjusted. be able to. That is, regardless of the length of the extension tube 41, the terminal plate 56 slides on the rail plate 49 without fail, and the electric components of the floor suction device are energized. Further, since the holding plate 65 also supports the stopper 67 via the compression spring 68, a special part for attaching the stopper 67 is not required, and the members can be omitted.

The same effect can be obtained by providing a small-diameter pipe on the floor suction tool side and a large-diameter pipe on the grip portion side.

Embodiment 3 FIG. FIG. 21 to FIG. 23 show Embodiment 3, and another configuration of the extendable extension tube will be described. In addition, description of the same operation as the above-described embodiment will be omitted. A large-diameter pipe 71 is made of a conductive material such as stainless steel or aluminum. The large-diameter pipe has a circular cross-section and slidably accommodates and supports the small-diameter pipe 43 inside. 73 that detachably fits with the suction tool
Is an intermediate communication portion fixed to the other end of the large-diameter pipe 71;
Is a power receiving portion made of a non-conductive plastic molded with both ends fixed to the upper portions of the fitting concave portion 72 and the intermediate communication portion 73, and a storage space in which the power feeding device 52 is slidably stored. A pair of rail plates 49 are laid in parallel on the bottom surface of the storage space 75. The power supply body is a power supply receiving portion 7 having both ends fixed to a large-diameter pipe 71.
4 and a power supply tool 52 having one end slidably supported by the power supply receiving portion 74 and the other end fixed to the end of the small-diameter pipe 43.

Reference numeral 501 shown in FIG . 23 denotes a discharge space formed between the rail plate 49 and the large-diameter pipe 71.
When the large-diameter pipe 71 is charged with static electricity generated by the passage of high-speed air through the inside thereof and reaches a saturated state, natural discharge to the energized rail plate 49 is easily performed. Stop 67 is housed in the intermediate communication unit 73, FIG. 2
A fitting piece 69 as shown in FIG. 20 is fitted to the fixing recess 62 provided in the power supply tool 52 as shown in FIG. The compression spring 68 is interposed between the stopper 67 and the power supply receiving portion 74 to support the fitting piece and the fixed concave portion 62 so as to be freely fitted.

According to the third embodiment, the power supply is formed separately on the outer periphery of the large-diameter pipe 71 and the small-diameter pipe 43, each having a circular cross section, so that the expansion and contraction operation of the extension pipe 70 allows The circular pipe 71 and the small-diameter pipe 43 are prevented from circular movement by the feeder, and can be moved straight and smoothly by being guided by the feeder. In addition, the expansion and contraction operation can be performed straight and smoothly, and the electrical connection in the power supply body can be made straight, smoothly and reliably.

The power receiving portion 74 and the power supply 52 also slide straight, so that the electrical connection is reliably performed. Further, after use, as shown in FIG.
In general, the power supply tool 52 is provided in the small-diameter pipe 43 via the space 54, so that the entire peripheral surface thereof is stored in the power supply receiving portion 74. For this reason, the power supply body has a double structure, has increased mechanical strength, and can protect the electrical connection portion even if it is dropped on the floor or the like, and has high safety.

The same effect can be obtained by providing a large-diameter pipe on the grip portion side and a small-diameter pipe on the floor suction tool side.

Embodiment 4 FIG. 24 is a perspective view of a telescopic extension tube according to the fourth embodiment, and FIG. 25 is a perspective view showing a used state. In the figure, reference numeral 76 denotes a large-diameter pipe, on the lower side (rear surface), a power supply section 46 provided along the longitudinal direction, and at the upper (front) end, a stopper 77 is attached. Reference numeral 78 denotes a circular small-diameter pipe made of a conductive material such as a metal or carbon material, and a fitting projection 79 is fixed to an end thereof.
9. A power supply device 80 is fixed to the lower side (rear surface). The other end of the power supply device 80 is slidably housed in the power supply unit 46, and a terminal plate and a lead wire are provided therein,
The lead wire is connected to the connection pin 59. Reference numeral 81 denotes a large number of fixing recesses formed above the small-diameter pipe 78, which are detachably fitted to the stoppers 77 to adjust the extension and contraction of the extension pipe.

According to the fourth embodiment, since the power supply section 46 and the power supply device 80 for accommodating the electrical connection parts are provided on the rear side of the large-diameter pipe 76 and the small-diameter pipe 78, the power supply device shown in FIG. In, for example, when cleaning below the desk Z,
The large-diameter pipe 76 and the small-diameter pipe 78 easily collide with each other, but the power supply unit 46 and the power supply device 80 can be prevented from being deformed due to the collision, which is safe. In other words, by providing a power feeder behind the extension pipe in an extension pipe that is likely to collide with furniture and the like during cleaning, it is possible to prevent direct collision of the power supply having an electrical connection portion and prevent breakage and deformation. Thus, energization can be reliably performed.

According to the figure, the large-diameter pipe 76 is provided on the floor suction tool side and the small-diameter pipe 78 is provided on the grip side.
A small diameter pipe may be provided on the floor suction tool side and a large diameter pipe may be provided on the grip portion side.

Embodiment 5 FIG. FIG. 26 is a perspective view showing the use state of the extension tube according to the fifth embodiment, and FIG. 27 is a perspective view showing the extension tube in a contracted state. 82 is an extension tube, 83 is a fitting projection, and is fixed to the end of the small diameter pipe 43. Reference numeral 84 denotes a power supply tool composed of a small-diameter portion 85 and a large-diameter portion 86, and the small-diameter portion 85 is fixed above the small-diameter pipe 43 and along the longitudinal direction of the small-diameter pipe 43 above the fitting projection 83. The end of the large-diameter portion 86 is slidably housed in the power feeding portion 46. Reference numeral 87 denotes a moving space formed between the small diameter pipe 43 and the small diameter portion 85. Reference numeral 88 denotes a movable plate which moves vertically in the moving space 87 by its own weight, and is movably held by the small diameter portion 85. Reference numeral 89 denotes a storage space provided in the fitting projection 83 for storing the movable plate 88 when the extension pipe 82 is contracted.

[0060] According to the fifth embodiment, in use as shown in FIG. 26, and the small diameter portion 85 movable plate 8 8 from housing space 89 side moves under its own weight toward the large-diameter portion 86, power supply device 84 And stops at the large-diameter portion 86 located substantially at the center. In this state, in order to be applied to the event external force is power supply device movable plate 8 8 is interposed power supply device 84 and the small-diameter pipe 43, it is possible to prevent the deformation of the small diameter pipe 43 side of the power supply device 84 it can. Further, as shown in FIG. 27 at the time of non-use, the movable plate 8 8 is housed in the housing space 89,
Since the end of the large-diameter pipe 42 and the fitting projection 83 are joined without any gap, they can be stored compactly.

In other words, by providing a power feeder on the outer peripheral portion of the small-diameter pipe via a predetermined space and providing a movable plate that slides in the space, even if the power feeder collides with furniture or the like during cleaning or the like, the movable plate is provided. Can prevent deformation of the power supply. That is,
Energization of the electrical connection portion in the power supply body can be ensured.

According to the figure, the large-diameter pipe 42 is provided on the floor suction device side, and the small-diameter pipe 43 is provided on the grip portion side. It may be provided on the component side.

Embodiment 6 FIG. FIGS. 28 30 show a sixth embodiment, FIG. 28
As shown in the drawing, reference numeral 90 denotes a telescopic extension tube which is slidably fitted to each other in the longitudinal direction, and has a large-diameter pipe 91 formed of a plastic material and a circular cross-section formed of a conductive material such as stainless steel or aluminum. And a fitting recess 9 formed at one end of the large-diameter pipe 91.
Reference numeral 3 denotes a floor suction device, and fitting protrusions 94 formed of a plastic material fixed to the other end of the small-diameter pipe 92 are detachably fitted to the grip portions. Reference numeral 95 denotes a power supply unit integrally formed in the longitudinal direction on the upper part of the large-diameter pipe 91 .
As shown , a guide port 96 is provided at one end and a pair of connection recesses 9 are provided at the other end.
And a pair of rail plates 98 made of a conductive material laid in parallel over the entire length. One end of the pair of rail plates 98 is connected to the connection recess 9.
7 are electrically connected to each other.

Reference numeral 99 denotes an upper guide rib, and reference numeral 100 denotes a lower guide rib, which is formed in the power supply portion 95 so as to be parallel to the rail plate 98. A power supply device 101 described later guides linear sliding in the power supply portion 95. I do. Note that the power supply body includes a power supply unit 95 and a power supply tool 101 described later. Reference numeral 101 denotes a power supply tool, which is made of a non-conductive material and has a prismatic shape.
02 is formed. One end of the power supply tool 101 is fixed to the upper part of the fitting projection 94 so as to extend through the predetermined space 103 in the longitudinal direction of the small diameter pipe 92.
Reference numeral 104 denotes a movable end 10 provided at the other end of the power supply 101.
4 and is stored in the power supply unit 95 through the guide port 96. 1
Reference numeral 05 denotes a pair of terminal plates formed of a conductive material fixed to the movable end portion 104, and the contact U portion 10
Numerals 6 are exposed from the movable end 104 as a pair, are elastically provided on the rail plates 98, and are electrically connected.

Reference numeral 107 denotes a pair of lead wires, one end of which is electrically connected to the terminal plate 105 and the other end of which is electrically connected to a pair of connection pins 108 attached to the upper part of the fitting projection 94, respectively. As shown in FIG. 30, even when an external force W is applied to the power supply device 101 and the power supply device 101 is expanded, the terminal plate and the connection pins 108 are slackened to a length that does not reach the tension and stored in the power supply device 101. ing. 109 is a power supply unit 9
5 and the lower part thereof is shown in FIG.
It fits in a fitting groove 110 formed facing the outer circumference of such a small-diameter pipe 92 at an equal pitch. Reference numeral 111 shown in FIG. 29 denotes a compression spring that supports the stopper 109 so as to be vertically movable.

In the vacuum cleaner configured as described above, first, as shown in FIG. 28, the extension pipe 90 is assembled, and the operation is performed by pressing the stopper 109 while attaching the small-diameter pipe 92 to the large-diameter pipe 91. When inserted, the power supply 10
The first movable end 104 also enters the power supply section 95 through the guide port 96, is guided by the upper guide rib 99 and the lower guide rib 100, and slides inside the power supply section 95. Also, a pair of terminal plates 10
5 is provided on each rail plate 98 to enable electrical connection. Then, when the stopper 109 is released at the required length, the stopper 109 fits into the fitting groove 110 and fixes the large-diameter pipe 91 and the small-diameter pipe 92.

As described above, according to the sixth embodiment, the power supply is provided on the outer peripheral surface of the extendable extension tube 90 which does not face the flow path through which the high-speed air containing dust passes.
Since the dust does not directly contact the electrical connection members such as the rail plate 98 and the terminal plate 105 constituting the power supply body, it is possible to prevent poor electrical contact due to the adhesion of the dust and the corrosion of the electrical connection member due to the wet adhesion of the dust.

Also, the provision of the bellows 102 on a part of the power supply provided on the outer peripheral surface of the extension tube 90 may cause furniture or the like to erroneously collide with the power supply during cleaning.
As shown in FIG. 7, even if an external force W is applied, the bellows portion 102 expands and absorbs the impact and the external force W, so that not only the deformation of the electric connection body such as the terminal plate 105 is prevented, but also the impact on the extension tube 90 is prevented. Can be absorbed. In other words, since the bellows part is formed in a part of the power supply tool, even if an external force is applied to the power supply tool, the bellows part expands and absorbs the external force, so that damage to the power supply tool can be reliably prevented. You can do it.

Also, when the bellows portion 102 is extended, the lead wires 10 stored slack in the power supply device 101 are stored.
7 also extends in the same manner as the bellows 102, so that the lead wire 1
No tensile force is exerted on the terminal plate 105 connected to the end of the terminal 07, thereby preventing disconnection or the like.

Further, a power supply tool 101 forming a power supply body is
Even if it is constituted by a flexible member which can be freely bent, the external force can be absorbed by its own flexibility to prevent it from being damaged or the like, and the same effect as when the bellows portion is provided can be obtained.

The same effect can be obtained even if the small-diameter pipe of the extension pipe is provided on the suction tool side for the floor and the large-diameter pipe is provided on the grip side.

Embodiment 7 FIG. 31 to 33 are cross-sectional views of a telescopic extension tube according to the seventh embodiment. In the drawings, reference numeral 112 denotes a reinforcing plate formed of an elastic metal housed in the power supply device 101, and one end thereof is provided. It is fixed to the upper part of the fitting projection 94 in the same manner as the power supply tool 101, and the other end is a long hole 11.
3 is slidably attached to a stop pin 114 of the movable end 104. Reference numeral 115 denotes a deformation preventing plate for preventing the reinforcing plate 112 from being deformed upward in the power supply device 101, and is formed in the power supply device 101.

According to the seventh embodiment, when adjusting the extension pipe to the required length, the small-diameter pipe 92 is pushed into the large-diameter pipe 91 while the stopper 109 is being pressed.
The power supply tool 101 and the reinforcing plate 112 each having one end fixed to 4 also move in the power supply unit. At this time, since the power supply device 101 is formed of a soft material, the power supply device 101 is easily deformed and it is difficult to perform smooth movement. However, since the reinforcing plate 112 assists the movement of the power supply device 101, the power supply device 101 can smoothly move similarly to the small diameter pipe 92. Becomes When the stopper 109 is released at a required length, the large-diameter pipe 91 and the small-diameter pipe 92 are fixed.

Even if some external force W is applied to the power supply 101 during use, as shown in FIG.
01 is deformed while moving in the power supply section 95, and the reinforcing plate 11
2, the stopper pin 114 is deformed while moving in the elongated hole 113, absorbs the external force W, and prevents its own damage. When the external force W is removed, the reinforcing plate 112 is restored. In other words, the reinforcing plate is provided on the power supply, so even if an external force is applied to the power supply, the reinforcing plate absorbs the external force while deforming, and when the external force is removed, it can quickly return to the original shape, so repeatedly The durability is improved without causing breakage even with external force.

Further, since the lead wire 107 is slackened and accommodated in the power supply device 101, even if the external force W is applied to the power supply device 101 and the power supply device 101 is deformed or expanded, the lead wire set in advance to be longer is Although tension is applied, the slack is only extended and the wire is not broken, and there is no abnormality in the electrical connection with the connection members such as the terminal plate 105 and the connection pin 108 connected to both ends. The connection is perfect even if an external force W is applied, and safety can be reliably ensured.

[0076]

The power supply device of the present invention has a configuration in which a bellows portion is provided.
Vacuum cleaner that has, even if external force is applied to the power supply,
Since the bellows stretches to absorb external force, damage to the power supply
Can be reliably prevented.

The power supply of the present invention is formed of a soft member.
Vacuum cleaners use external force even if external force is applied to the power supply.
Absorbed by the flexibility of the soft member to prevent damage to the power supply
Can be

Further, in the vacuum cleaner in which a power supply is provided through a predetermined space on the outer peripheral portion of the small diameter pipe according to the present invention and a movable plate which slides in the space is provided, the power supply collides with furniture or the like during cleaning or the like. Even so, the movable plate can prevent deformation of the power supply.
That is, energization of the electrical connection portion in the power supply body can be ensured.

[0079]

[0080]

[0081]

[0082]

[0083]

[0084]

[0085]

[0086]

[0087]

[0088]

[0089]

[0090]

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a vacuum cleaner according to Embodiment 1 of the present invention.

FIG. 2 is a side view of the extension pipe according to the first embodiment.

FIG. 3 is a longitudinal sectional view of the extension pipe according to the first embodiment.

FIG. 4 is a structural view of a main part of an extension pipe according to the first embodiment.

FIG. 5 is a sectional view taken along line VV in FIG. 3;

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 3;

FIG. 7 is a sectional view taken along the line VII-VII in FIG. 3;

FIG. 8 is a side view of the first embodiment in a state where an extension pipe is minimized.

FIG. 9 is a perspective view of an extension tube according to the first embodiment.

FIG. 10 is a perspective view of an extension tube according to the second embodiment.

FIG. 11 is a perspective view showing a state where an extension pipe according to the second embodiment is made the shortest.

FIG. 12 is a longitudinal sectional view of an extension pipe according to a second embodiment.

13 is a sectional view taken along the line II in FIG.

14 is a sectional view taken along the line II in FIG.

FIG. 15 is a sectional view taken along the line II-II in FIG.

FIG. 16 is a plan view of a main part of a large-diameter pipe according to a second embodiment.

FIG. 17 is a perspective view of a holding plate according to the second embodiment.

FIG. 18 is a cross-sectional view of a main part of an extension pipe according to a second embodiment.

FIG. 19 is a perspective view of a main part of a power supply tool according to the second embodiment.

FIG. 20 is a configuration diagram of a power supply device and a stopper according to the second embodiment.

FIG. 21 is a perspective view showing the third embodiment when the extension tube is extended.

FIG. 22 is a perspective view showing the third embodiment when the extension tube is contracted.

FIG. 23 is a cross-sectional view of the extension tube according to the third embodiment when the extension tube is extended.

FIG. 24 is a perspective view of an extension tube according to the fourth embodiment.

FIG. 25 is a perspective view of a main part of the extension tube during cleaning according to the fourth embodiment.

FIG. 26 is a perspective view of a main part of the extension pipe during cleaning according to the fifth embodiment.

FIG. 27 is a perspective view showing the fifth embodiment when the extension tube is contracted.

FIG. 28 is a perspective view of an extension tube according to the sixth embodiment.

FIG. 29 is a sectional view of an extension pipe according to the sixth embodiment.

FIG. 30 is a side view of an extension pipe according to the sixth embodiment.

FIG. 31 is a sectional view of an extension pipe according to a seventh embodiment.

FIG. 32 is a sectional view of an extension tube according to a seventh embodiment.

FIG. 33 is a perspective view of a reinforcing plate according to the seventh embodiment.

FIG. 34 is a sectional view of a main part showing a conventional extension pipe.

FIG. 35 is a perspective view showing a conventional extension tube.

[Explanation of symbols]

1 Vacuum cleaner body, 2 power cord, 3 suction port, 4 hose, 5 hose body, 6 outlet, 7 grip, 8
Remote switch, 9 Floor suction device, 11 Extension tube, 1
2 Large diameter pipe, 13 Small diameter pipe, 14 Operation unit, 1
5 locking recess, 16 elastic stopper, 17 stopper, 22
Power supply conductor, 23 lead wire, 26 cover, 27
Guide port, 30 Fitting end, 32 Connection end, 33
Connection recess, 34 power supply, 35 cylinder, 38 terminal plate,
39 Lead wire, 41 Extension pipe, 42 Large diameter pipe, 4
3 small-diameter pipe, 46 feeding section, 47 guide port, 49
Rail plate, 52 Feeder, 53 Decoupling part, 56 Terminal board, 58 Lead wire, 59 Connection pin, 67 Stopper, 71 Large diameter pipe, 72 Small diameter pipe, 76 Large diameter pipe, 77 Stopper, 78 Small diameter pipe, 80 power supply device, 82 extension tube, 83 coupling projection, 84 power supply device, 9
0 extension pipe, 91 large diameter pipe, 92 small diameter pipe, 9
5 power supply section, 98 rail plate, 101 power supply tool, 102
Bellows part, 105 terminal board, 107 lead wire, 112
Reinforcement plate, 113 long hole, 114 locking pin

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-250129 (JP, A) JP-A-4-272734 (JP, A) JP-A-63-49121 (JP, A) JP-A-4- 189337 (JP, A) Fully open sho 64-31063 (JP, U) Fully open sho 63-199754 (JP, U) Fully open sho 63-150660 (JP, U) Fully open sho 63-55958 (JP, U) Japanese Utility Model Showa 50-91345 (JP, U) Japanese Patent Publication No. 5-50936 (JP, B2) Japanese Utility Model Showa 61-42520 (JP, Y1) Japanese Utility Model Showa 61-1882 (JP, Y1) (58) (Int.Cl. ⁷ , DB name) A47L 9/24

Claims (4)

(57) [Claims] 1. A cleaner body, a hose having one end connected to the cleaner body, an extension tube connected to the other end of the hose, and an electric component such as a motor connected to a tip of the extension tube. A large-diameter pipe and a small-diameter pipe that are slidably fitted to each other and that can be fixed to an arbitrary length, and that the cleaner body and the floor suction tool are provided. A power supply unit that electrically connects the small-diameter pipe to the power-supply unit, the power-supply body being provided along the length direction of the large-diameter pipe on an outer peripheral surface of the large-diameter pipe, and a length of the small-diameter pipe. Along the direction and separated from the small-diameter pipe, one end is electrically connected to the power supply unit, and the other end is composed of a power supply tool fixed to the small-diameter pipe, and the power supply tool is provided with a bellows portion. The power supply unit and the small diameter pipe are slidably fitted along the length direction of the pipe. An electric vacuum cleaner characterized by that. 2. A cleaner body, a hose having one end connected to the cleaner body, an extension tube connected to the other end of the hose, and an electric component such as a motor connected to a tip of the extension tube. and a floor suction device having a built-in, the are extension tube slidably fitted in each other in large diameter pipes and small diameter pipes can be fixed to any length, and the said cleaner
A power supply for electrically connecting the body and the floor suction tool , wherein the power supply is provided on the outer peripheral surface of the large-diameter pipe;
A power supply section provided along the length direction of the
Along the length of the pipe and spaced from the small diameter pipe
One end is electrically connected to the power supply unit, and the other end is
A feeder fixed to the small-diameter pipe, wherein the feeder is formed of a soft material,
An electric vacuum cleaner which is slidably fitted along the length direction of the pipe . Wherein said cleaner main body or electrically connected to the feeding conductor to the floor suction tool with the outer peripheral surface of the large diameter pipe is disposed in the feeding unit, one end in said power supply device connected to the terminal plate, wherein the floor suction tool or the cleaner electrically connected to the lead in the body is arranged Rutotomoni other end of the lead wire to slide with electrical contact with the feeding conductor The vacuum cleaner according to claim 1, wherein the vacuum cleaner is performed. 4. A cleaner body, a hose having one end connected to the cleaner body, an extension tube connected to the other end of the hose, and an electric component such as a motor connected to a tip of the extension tube. The extension pipe has a large-diameter pipe and a small-diameter pipe which are slidably fitted to each other and can be fixed to an arbitrary length, and the length thereof is provided on the outer peripheral surface of the large-diameter pipe. And a power supply unit having a power supply conductor electrically connected to the vacuum cleaner main body or the electric component of the floor suction tool, and connected to one end of the power supply conductor slidably. A terminal plate, the other end of which has a predetermined space between itself and the outer periphery of the small-diameter pipe;
A power supply tool fixed along the direction, a movable plate that slides in a predetermined space formed in the power supply tool and the small-diameter pipe is provided, and the power supply tool is provided with a small-diameter portion located in an upper position in use and a lower portion in a lower portion.
The large-diameter part is located at
When the extension pipe is extended, the length is approximately half of the small diameter pipe.
The power supply is slidably housed in the power supply unit, and the movable plate is configured to be able to move a small diameter portion of the power supply.
Vacuum cleaner, characterized in that is.