JP2001346738A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the temperature rise by heat circulation, and to prevent dust from being blown up in a circulation type vacuum cleaner of an exhaust circulation structure. SOLUTION: In the circulation type of the exhaust circulation structure provided with a composite piping means having a suction air passage to feed the dust into a dust collection chamber together with the air flow by communicating a vacuum cleaner body with a nozzle and an exhaust air passage to feed the air flow fed out of an electric fan into the nozzle by communicating the vacuum cleaner body with the nozzle, a part of the exhaust air to be fed out of the electric fan is allowed to flow out to the outside air side from the composite piping means in a section between the vacuum cleaner body and the nozzle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner, and more particularly, to a recirculation vacuum cleaner in which exhaust air sent from an electric blower is returned to a suction body.

[0002]

2. Description of the Related Art A recirculation type vacuum cleaner in which exhaust gas discharged from an electric blower is sent back to a suction body directly injects exhaust gas sent back near a suction port of the suction body, and this injection is performed. The force of the dust causes the dust to float from the cleaning surface, or the exhaust brush is rotated to rotate the rotating brush by injecting exhaust air to the rotating brush in the suction body, and the dust is lifted from the cleaning surface by the airflow accompanying this rotation, and from the suction port. It has a structure that sucks circulation exhaust together with dust.

[0003] Such a recirculation-type vacuum cleaner is capable of lifting dust from a cleaning surface, so that cleaning efficiency is high, and since exhaust gas does not go out to the outside, it is possible to satisfy hygienic needs. it can.

[0004]

However, a conventional recirculating vacuum cleaner generally employs a configuration in which the exhaust air volume is completely returned to the suction body. During operation, heat circulation occurs, which causes a rise in the temperature inside the cleaner body, which causes a problem that a control circuit and the like inside the cleaner body are easily damaged by heat.

[0005] For this reason, it is conceivable to adopt a configuration in which an exhaust hole is formed in the main body of the cleaner to allow a part of the exhaust to flow to the outside air. If the part is allowed to flow out to the outside air, there is a possibility that dust on the cleaning surface may fly up.

[0006] Japanese Patent Laid-Open No. Hei 1 (1994) discloses a recirculation type vacuum cleaner in which exhaust gas can be used as a blower.
Although it is disclosed in Japanese Patent Application Publication No. 1-178752, in the prior art disclosed in this prior application, the intake hose and the exhaust hose are arranged side by side, and the exhaust hose is detached from the hand connection pipe. Since it is used as a blower without twisting, handling of the two hoses is troublesome, and there is a problem that the usability is poor.

Further, in the conventional recirculation type vacuum cleaner, no consideration is given to the attachment of the suction cleaning attachment, and there is a problem in the cleaning performance when the suction cleaning attachment is attached. Easy to occur.

Further, in the conventional recirculation type vacuum cleaner, attention is paid also to the securing of the air flow path when the extension pipe provided with the intake air passage and the exhaust air passage is made expandable and contractible. In general, the extension tube had a fixed length and a fixed structure.

The present invention has been made in view of the above points,
It is an object of the present invention to suppress a rise in temperature due to heat circulation in a recirculation type vacuum cleaner having an exhaust circulation structure, and to prevent dust on a cleaning surface from rising.

It is another object of the present invention to provide a recirculation type vacuum cleaner which can use exhaust gas as a blower and is easy to handle.

Another object of the present invention is to provide a recirculating vacuum cleaner which does not impair the cleaning performance even when an attachment for suction cleaning is mounted.

It is another object of the present invention to provide a reflux-type vacuum cleaner having a telescopic extension tube.

In general, it is an object of the present invention to provide a recirculation type vacuum cleaner which is highly reliable, easy to handle, and convenient for the user, and easy to use.

[0014]

In order to achieve the above object, in one representative invention according to the present invention, a cleaner body provided with an electric blower for sucking dust into a dust collection chamber, and an opening on a lower surface are provided. A suction body that is moved and operated on a cleaning surface; a suction air passage for communicating the cleaner body with the suction body to send dust into the dust collection chamber together with an air flow; and the cleaner body. And a combined piping means having an exhaust air passage for communicating the air flow sent from the electric blower into the suction body by communicating the suction body with the suction body. In a section between the suction pipe and the suction body, a part of the exhaust gas sent from the electric blower is caused to flow out to the outside air from the composite piping means.

According to another aspect of the present invention, there is provided a cleaner body having an electric blower for sucking dust into a dust collection chamber, and an opening on a lower surface. A suction body that is moved and operated on a cleaning surface, an air passage for suction for communicating the cleaner body with the suction body and sending dust into the dust collection chamber together with an airflow; and A composite pipe means having an exhaust air passage for communicating an air flow sent out from the electric blower into the suction body by communicating with the suction body, and a vacuum cleaner provided with the exhaust pipe in the composite pipe means. One end of a short exhaust hose, which is a part of a member forming an air passage, is detachable from the suction body, and can be used as a blower for blowing out exhaust.

[0016] In order to achieve the above object, a still further typical invention according to the present application has a cleaner main body provided with an electric blower for sucking dust into a dust collection chamber, and an opening on a lower surface. A suction body moved on a cleaning surface, an air passage for suction for communicating the cleaner body with the suction body and sending dust into the dust collection chamber together with an airflow, and the cleaner body; A combined piping means having an exhaust air passage for communicating an air flow sent from the electric blower into the suction body by communicating with the suction body, wherein the combined piping means is detachable. Attachment member for suction cleaning including a plurality of composite piping units operably connected to each other, the end of the composite piping unit being connected to the intake air passage of the composite piping unit. A shutter member that can be mounted and that, by mounting the attachment member, closes an opening of the exhaust air passage exposed at an end of the composite piping unit and covers a hole formed on an outer periphery of the composite piping unit so as to be openable and closable. Is moved to the open position, and the exhaust gas from the exhaust air passage of the composite piping unit flows out to the outside air through the hole formed in the outer periphery of the composite piping unit.

In order to achieve the above-mentioned object, in another representative invention according to the present invention, there is provided a cleaner body provided with an electric blower for sucking dust into a dust collection chamber, and an opening on a lower surface. A suction body moved on a cleaning surface, an air passage for suction for communicating the cleaner body with the suction body and sending dust into the dust collection chamber together with an airflow, and the cleaner body; A composite pipe means having an exhaust air passage for communicating the air flow from the electric blower with the suction body and sending the air flow into the suction body, wherein the composite pipe means has one end. A composite hose member connected to the cleaner body and having the intake air passage and the exhaust air passage, and one end connected to the other end of the composite hose member, the intake air passage and the exhaust A handle having an air passage for use, and an extension tube having one end connected to the other end of the handle and having the air passage for intake and the air passage for exhaust, the extension tube having one end attached to the handle. A first tube connected to the other end of the handle, and a second tube connected slidably inside the first tube and the other end connected to the mouthpiece; The first pipe has an appearance in which a first intake air pipe forming the intake air passage and a first exhaust air pipe forming the exhaust air passage are formed adjacent to each other. The present invention has a composite pipe structure, wherein the second pipe body has a second intake air pipe section forming the intake air path and a second exhaust air section forming the exhaust air path. Takes a composite pipe structure formed side by side, and is located in front of the first intake air pipe section. The second intake air pipe section is slidable, wherein the second exhaust air pipe portion in the first exhaust air tube portion is slidable, a configuration.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 12 relate to a recirculation type vacuum cleaner according to a first embodiment of the present invention, and FIG. 1 is a perspective view showing the general outline of the vacuum cleaner of the present embodiment.

In FIG. 1, reference numeral 10 denotes a cleaner main body having a built-in electric blower, a control circuit, and the like; A flexible composite hose attached, 40 is a handle at one end attached to the other end of the composite hose 30, 50 is a telescopic extension tube attached at one end to the other end of the handle 40, 6
Reference numeral 0 denotes a mouthpiece attached to the other end of the extension tube 50.

Wheels 11 and 12 are attached to the cleaner body 10, so that the cleaner body 10 can run. The hand handle 40 is provided with a grip portion 41 for the user to hold by hand and a hand operation portion 42 for performing an operation input. Grip part 41
Is used to transfer the suction body 60 on the cleaning surface via the extension pipe 50, and by giving a twisting operation to the extension pipe 50 by the grip portion 41,
Is used to rotate 90 degrees left and right. Also,
The operation input by the hand operation unit 42 is transmitted to a control circuit in the cleaner main body 10 by optical communication using infrared rays. The extension tube 50 includes a first tube 51 detachably connected to the handle 50 at hand, and a second tube 55 detachably connected to the mouthpiece 60. The second pipe 55 is connected so as to be relatively slidable (the second pipe 55 is connected so as to be slidable in the first pipe 51). The suction body 60 mainly includes a suction main body 61 having a suction port formed on the lower surface, and a suction joint 65, and an end of the suction joint 65 is provided at an end of the extension pipe 50 (an end of the second pipe 55). ) Are detachably connected.

Next, the structure of each part in this embodiment will be described. First, the cleaner body 10 will be described. 2 is a cross-sectional side view of the cleaner main body 10, FIG. 3 is a cross-sectional front view of the cleaner main body 10, FIG. 4 is a perspective view of the cleaner main body 10 with the upper case removed and the dust collection cover opened, and FIG. Vacuum cleaner body 1
FIG. 4 is a perspective view showing a configuration of a main part of a lower case side of the lower case.

2, 3 and 4, reference numeral 101 denotes a lower case constituting a lower outer shell of the cleaner main body 10, and 102 denotes an upper case forming an upper outer shell of the cleaner main body 10.
Reference numeral 3 denotes a dust collection cover that covers the opening of the dust collection chamber, and these members constitute an outer shell of the cleaner body 10.

Next, the internal configuration of the cleaner body 10 will be described. In the following description, the body joint 20 side (the left side in FIG. 2) is the front side, the cord reel side is the rear side (the right side in FIG. 2), the upper case 102 side is the upper side (the upper side in FIG. 2), and the lower case The 101 side is referred to as a lower side (the lower side in FIG. 2).

2 and 3, reference numeral 104 denotes a dust collecting case which is disposed in front of the cleaner body 10 and forms a dust collecting chamber 105, and 106 denotes a dust collecting filter which is disposed in the dust collecting chamber 105. Reference numeral 107 denotes an electric blower disposed behind the dust collecting case 104 to generate a suction airflow, 108 denotes a code reel for winding a power cord, and 109 denotes a code reel storage room. Reference numeral 110 denotes a motor lower cover formed integrally with the lower case 101, and reference numeral 111 denotes a motor upper cover which is located above the motor lower cover and is disposed so as to cover the electric blower 107. In the present embodiment, the motor lower cover 110 is formed integrally with the lower case 101, but may be formed separately from the lower case 101 as needed. Further, the motor upper cover 111 may be formed integrally with the upper case 102.

The electric blower 107 has an anti-vibration rubber 11 on the front side.
2 and the rear side is supported by vibration-proof rubber 113. The anti-vibration rubber 113 is fixed by being sandwiched between the lower motor cover 110 and the upper motor cover 111.
The electric blower 107 is provided in an electric blower room 114 formed by the lower motor cover 110 and the upper motor cover 111. In the electric blower room 114, a flame-retardant sound absorbing material 115 is disposed on the outer periphery of the electric blower 107 on the side of the electric motor unit having the exhaust port. An opening 116 is formed above the motor upper cover 111 to allow exhaust air from the electric blower 107 to pass therethrough. A sound absorbing material 117 is provided above the opening 116. As shown in FIG. 3, the sound absorbing material 117 has openings 116.
(The center axis of rotation of the electric blower 107) is projected downward, and each of the left and right sides is curved in a gentle mountain shape on the left and right sides of the projection 117a. The projecting portion 117a of the sound absorbing material 117
It is projected downward by a rib 150 integrally formed with the upper case 102. Further, sound absorbing materials 118 and 119 are provided below the sound absorbing material 117 on the outer side in the left-right direction.

In the electric blower chamber 114, between the outer periphery of the electric blower 107 and the lower motor cover 110 and the upper motor cover 111, there is a ventilation passage 120 in the motor cover, which serves as a ventilation passage through which the exhaust of the electric blower 107 flows. Are formed. Also, the motor upper cover 111 and the upper case 1
02 is formed between the motor lower cover 110 and the side wall of the lower case 101 between the motor lower cover 110 and the side wall of the lower case 101. A lower case inner air passage 122 communicating with the inner air passage 121 is formed. Further, below the electric blower 107, there is formed a filter storage chamber 124 that communicates with the lower case ventilation path 122 and functions as an exhaust ventilation path which also serves as a storage space for the filter 123.

The electric blower 1 sucked from the dust collecting chamber 105
As shown in FIG. 3, the exhaust gas sent out from the outlet 07 diverges in the left-right direction, flows along the outer periphery of the electric blower 107 in the ventilation passage 120 in the motor cover, and passes through the opening 116 on the upper side. . The exhaust gas that has passed through the opening 116 is diverted in the left-right direction by the protruding portion 117a, and flows through the upper case ventilation passage 121 in the motor upper cover 111.
Flows along the perimeter of. After the exhaust air from the upper case ventilation passage 121 passes through the lower case ventilation passage 122 formed by the motor lower cover 110 and the side wall of the lower case 101, the filter storage chamber 1 serving as a storage space for the filter 123 is also provided.
24. In the filter storage chamber 124, the exhaust gas flowing in from the left and right directions of the ventilation passage 122 in the lower case joins, and the exhaust gas flows in the entire filter 123.

The exhaust gas flowing into the filter storage chamber 124 passes through the lower case exhaust flow path 130 (see FIG. 5) through the exhaust path shown by the arrow in FIG. The dust flows into the exhaust passage 142 in the dust collection lid of the dust collection lid 103 via the exhaust passage entrance 141. The exhaust gas that has passed through the dust-collecting-lid exhaust passage 142 passes through the dust-collecting lid exhaust passage outlet 143, and is inserted into the connection hole 150 of the dust-collecting lid 103. It flows into the road.

Next, the body joint 20 and the composite hose 30
Will be described. FIG. 6 is a cross-sectional view showing the body joint 20 and an end portion of the composite hose 30 connected to the body joint 20.

In FIG. 6, reference numeral 210 denotes an outer tube of the main body joint,
Reference numeral 220 denotes a body joint inner tube, and both 210 and 220 have a concentric double pipe structure. One end surface 221 of the body joint inner tube 220 is an annular flange formed at one end of the body joint outer tube 210. It is in close contact with 211. Body fitting inner tube 2
The inside of 20 is a body joint intake passage 230,
The space between the outer periphery of the main joint inner tube 220 and the inner periphery of the main joint outer tube 210 is a main joint exhaust passage 231.

The body joint 20 is connected to the connection hole 1 of the dust collecting lid 103.
In a state in which the main body joint 20 is attached to the cleaner main body 10 while being fitted into the main body 50 and attached to the cleaner main body 10,
The main body joint 20 penetrates through the dust collecting cover 103, the end opening 222 of the main body joint inner tube 220 faces the opening of the dust collecting cover 103, and the main body joint exhaust passage formed in the main body joint outer tube 210. The inlet 212 is the dust collection lid exhaust channel outlet 143 (FIG. 2).
It has come to communicate with. Therefore, the intake air flows into the dust collection chamber 105 from the main body joint intake passage 230, and from the dust collection cover exhaust passage 142, via the dust collection cover exhaust passage outlet 143, and the main body joint exhaust passage inlet 212, Exhaust flows into the body joint exhaust passage 231.

310 is a flexible outer hose, 32
Reference numeral 0 denotes an inner hose having a smaller diameter than the outer hose 310 having flexibility, and the composite hose 30 has a double pipe structure in which the inner hose 320 is inserted into the outer hose 310. The outer hose 31 is made of a material such as a non-woven fabric or a mesh-like cloth that allows a small amount of air to permeate (a small amount of air can leak out) and has a thickness that can guarantee a predetermined mechanical strength. And a spiral reinforcing ridge 312 spirally wound around the flexible hose body 311 and provided integrally therewith. Also, the inner hose 320
Is a flexible hose body 321 made of an airtight material such as vinyl chloride and having a thickness that can guarantee a predetermined mechanical strength.
And a spiral reinforcing ridge 322 spirally wound around the flexible hose body 321 and provided integrally therewith. And
The inside of the inner hose 320 is a composite hose intake passage 330 through which the intake air flowing into the dust collection chamber 105 flows,
The space between the outer circumference of the inner hose 320 and the inner circumference of the outer hose 310 forms a composite hose exhaust passage 340 through which the exhaust blown from the electric blower 107 flows.

As shown in FIG. 6, an end of the inner joint body 220 is fitted into an end of the inner hose 320, and the inner hose 320 and the inner joint body 220 are integrally connected. As a result, the intake air flows from the composite hose intake passage 330 to the main body joint intake passage 230.

The end of the outer hose 310 is inserted into the annular groove 351 of the seal ring 350 and is prevented from coming off by a projection 352 in the annular groove 351, and is integrated with the seal ring 350. Outer hose 3
The seal ring 350 holding the end of the ten is fitted into the inner periphery of the outer joint body 210 of the main body joint. Further, the seal ring 350 is completely retained and retained by a locking ring 360 fitted on the inner periphery of the outer tube 210 of the main body joint. With such an attachment structure, the composite hose exhaust passage 340 formed in the space between the outer periphery of the inner hose 320 and the inner periphery of the outer hose 310 communicates with the body joint exhaust passage 231. The exhaust from the body joint exhaust passage 231 flows to the composite hose exhaust passage 340.

Next, the hand handle 40 and the extension tube 50
Will be described. FIG. 7 is a cross-sectional view of the hand handle 40 and the extension tube 50, FIG. 8 is an enlarged view of a main part of FIG.
Is a sectional view of a main part of the extension tube 50, and FIG. 10 is a plan view of the extension tube 50. 7 to 10, the extendable extension tube 50 is shown in the most contracted state.

First, the handle 40 will be described. 7 and 8, reference numeral 400 denotes a hose-side joint of the hand handle 40, reference numeral 450 denotes an extension-tube-side joint of the hand handle 40, and both 400 and 450 are integrally formed to have a substantially rectangular shape. From the handle-shaped handle base,
The grip part 41 having the hand operation part 42 is extended,
A circuit board, a transmission LED, and the like are built in the grip portion 41.

The hose-side joint portion 400 is mainly composed of a hose-side joint outer tube 410 and a hose-side joint inner tube 420, and both 410 and 420 have a double pipe structure. And the inside of the hose side joint part inner tube 420 is
A hose side joint portion intake passage 430 is provided, and the outer periphery of the hose side joint portion inner tube 420 and the hose side joint portion outer tube 41 are formed.
The space between the inner circumference of the hose 0 and the hose-side joint exhaust passage 44
It is 0.

The connection structure between the hose-side joint 400 and the composite hose 30 is the same as the connection structure between the body joint 20 and the composite hose 30. The end of the inner hose 320 is connected to the end of the inner tube 420 of the hose-side joint. Is inserted into the inner hose 32
0 and the hose-side joint inner tube 420 are integrally joined,
Thus, the intake air flows from the hose-side joint intake passage 430 to the composite hose intake passage 330. Further, a seal ring 451 is fitted into the inner periphery of the hose-side joint outer tube 410, and the end of the outer hose 310 is connected and held to the seal ring 451. The stopper ring 452 fitted to the inner periphery of the tube 410 completely prevents the tube 410 from coming off. With such a mounting structure, the composite hose exhaust passage 340 communicates with the hose-side joint exhaust passage 440, and the exhaust from the composite hose exhaust passage 340 is connected to the hose-side joint exhaust passage. Road 44
It flows to zero.

The extension pipe side joint 450 is mainly composed of an extension pipe side joint outer pipe 460 and an extension pipe side joint inner pipe 470. The two pipes 460 and 470 have a double pipe structure. The pipe-side joint inner pipe 470 is formed integrally with the hose-side joint inner pipe 420. The inside of the extension pipe side joint portion inner pipe body 470 is an extension pipe side joint portion intake passage 480, and the extension pipe side joint portion intake passage 4.
The intake air flows from 80 to the hose-side joint intake air passage 430. In addition, the inner pipe body 47 of the extension pipe side joint portion
A space between the outer circumference of the outer pipe 0 and the inner circumference of the outer pipe 460 of the extension pipe side joint (a fan-shaped space in a cross section orthogonal to the pipe axis) is an exhaust pipe 490 of the extension pipe side joint. The exhaust pipe inlet 491 of the extension pipe side joint exhaust passage 490 and the exhaust passage outlet 441 of the hose side joint exhaust passage 440 are overlapped so as to communicate with each other. Exhaust gas from the exhaust flow path 440 flows through the exhaust flow path outlet 441 and the exhaust flow path inlet 491 to the extension pipe side joint portion exhaust flow path 490.

Next, the extension pipe 50 will be described. As described above, the extension tube 50 includes the first tube 51 detachably connected to the handle 40 at hand, and the second tube 55 detachably connected to the mouthpiece 60. The first tube 51 and the second tube 55 are connected so as to be relatively slidable.

The first tube 51 is provided with a first outer tube 510.
And a first tubular body tube 520, and although not shown, the main body of the first tubular body outer tube 510 has a cross section slightly smaller than the outer circumference of the first tubular body tube 520 having a circular cross section. An arc portion having a large diameter and a bulge portion protruding from the arc portion are formed, and the bulge portion is formed above the first outer tube 510. First outer tube 510
The first tubular body tube 520 inserted into the inside of the first tubular body tube 520 is provided with a locking claw 521 provided near one end of the first tubular body tube 520.
The stepped portion 522 provided near the other end of the first tubular body tube 520 is locked by a locking hole 511 provided near one end of the first tubular body 520. Outer tube 510
(See FIG. 8), whereby the first tubular body tube 520 is integrated with the first tubular outer tubular body 510. ing. Further, the outer peripheral surface on the lower side of the first tubular body tube 520 is:
The first outer pipe 510 is disposed in close contact with the lower inner peripheral surface.

The first tube 51 is a first tube 520.
Of the first tube outer tube 510 (the end surface of the locking tube 512) while the outer periphery of the end portion of the first tube outer tube 510 is inserted so as to be in close contact with the inner periphery of the extension tube side joint portion inner tube 470 of the extension tube side joint portion 450. ) Is brought into contact with the end face of the outer tube 460 of the extension pipe side joint, so that the extension pipe side joint 45
Connected to 0. In this connection state, the locking claw of the locking member 495 provided on the hand handle 40 is fitted into the locking hole 523 provided near the end of the first tubular body tube 520, so that it is retained and retained. (See FIG. 8). The locking member 495 is provided with a rotation biasing property in the locking direction by a spring. When the button is pressed against the locking member 495 against the spring, the locking claw of the locking member 495 is moved from the locking hole 523. It is designed to leave.

The inside of the first tubular body pipe 520 forms a first tubular body intake flow path 530, and the first tubular body intake flow path 5
The intake air flows from 30 to the extension pipe side joint intake air flow path 480. In addition, a first pipe exhaust passage 540 is provided between the outer circumference on the upper side of the first pipe 520 and the inner circumference of the bulging portion provided on the first outer pipe 510. The first pipe exhaust passage 540 communicates with an annular first pipe exhaust space 541 at the end of the first outer pipe 510. Then, the exhaust gas from the extension pipe side joint portion exhaust flow path 490 passes through the first pipe body exhaust space 541 to the first pipe exhaust space 541.
Flows to the pipe exhaust passage 540 of FIG.

The second pipe 55 is a second pipe suction pipe 5.
50, and a second pipe exhaust pipe 560, and a second pipe exhaust pipe 560 having a flat cross section is arranged above the second pipe intake pipe 550 having a circular cross section. Have been. At one end (end on the suction body side) of the second pipe exhaust pipe 550, one end of the second pipe exhaust pipe 560 is fixed and connected, and Except for the fixed and connected part, the second pipe exhaust pipe 560 is
Is separated from the pipe 550 by a predetermined amount.

The second pipe suction pipe 550 is slidably inserted into the first pipe 520. Further, the second pipe exhaust pipe 560 is formed on the upper outer periphery of the first pipe inner pipe 520 and the first outer pipe 510 of the first pipe outer pipe 510 except for a joint portion with the second pipe intake pipe 550. It is slidably inserted into a space (first pipe exhaust passage 540) formed between the inner periphery of the bulging portion provided on the upper side. That is, the upper and lower double hollow bodies provided on the second pipe 55 are slidably inserted into the upper and lower double sheaths provided on the first pipe 51. The second pipe suction pipe 550 is
The first pipe 520 communicates with the first pipe 520 in an airtight state, and the second pipe exhaust pipe 560 is also airtight by the first pipe exhaust passage 540 and the sealing material 561 (see FIG. 8). Keep in communication.

The inside of the second pipe suction pipe 550 is
The pipe intake air flow path 570 is formed, and the intake air flows from the second pipe intake air flow path 570 to the first pipe intake air flow path 530. In addition, the second pipe exhaust pipe 5
The inside of 60 is a second tube exhaust channel 580, and the exhaust from the first tube exhaust channel 540 flows to the second tube exhaust channel 580. . In addition,
The second pipe exhaust passage 580 is provided in the second pipe intake pipe 55.
In the vicinity of the end on the side of the mouthpiece body of 0, it is branched into two branches,
The extension pipe exhaust outlet flow paths 581 and 581 (FIG. 1)
0).

The first tube 51 and the second tube 55 are provided with a lock mechanism for holding the telescopic positions of the two members 51 and 55, and a locking mechanism for the two members 51 and 52. However, the description is omitted here.

Next, the mouthpiece 60 will be described. FIG.
1 is a plan view showing a part of the mouthpiece 60 and the extension pipe 50, FIG. 12 is a cross-sectional view along the line AA in FIG. 11, and FIG. Are shown in a cut-away manner.

As described above, the suction body 60 includes the suction main body 61 and the suction joint 65. Suction body 6
An opening (suction port) 610 for sucking dust from the cleaning surface together with air into the suction main body 61 is provided on the bottom surface of the cleaning device 1, and both ends are rotatably held in the suction main body 61. A rotating brush 620 is provided.

The inlet joint 65 has a first joint 660 and a second joint 670, and one end of the second joint 670 is connected to the inlet main body 61 so as to be rotatable vertically with respect to the inlet main body 61. It is connected and held, and on the other end side of the second joint 670,
One end of the first joint 660 is coupled and held so as to be rotatable in the left-right direction with respect to the suction main body 61.

The first joint 660 is formed with a first joint intake pipe 661 and a first joint exhaust passage box 665 formed adjacent to an upper portion of the first joint intake pipe 661. The inside of the first joint intake pipe 661 is a first joint intake passage 662, and the inside of the first joint exhaust passage box 665 is a first joint exhaust passage 666. The end of the first joint 660 is detachably connected to the end of the second pipe 55 (extended pipe 50), and in the connected state, the end of the first joint intake pipe 661 is connected to the second pipe 55. The exhaust inlet 667 of the first joint exhaust passage box 665 is inserted into the inner periphery of the end portion of the tube intake pipe 550, and the exhaust outlet 667 of the extension pipe exhaust outlet flow path 581 is inserted.
82. Therefore, the intake air from the first joint intake air flow path 662 is
70, and the exhaust gas from the extension pipe exhaust outlet flow path 581 flows into the first joint exhaust flow path 666. Note that the first joint 660 and the second pipe 55
The connection state with the hand handle 40 and the extension pipe 5
0 (first tube body 51) is locked by a lock mechanism similar to the lock mechanism that locks the connection state. In FIG. 7, reference numeral 590 denotes a lock member of the lock mechanism, and reference numeral 591 denotes a lock member 590.
Release button.

First joint exhaust passage box 665 and suction body 6
1 is communicated by two short exhaust hoses 680, 680. One end of the exhaust hose 680 is connected to an exhaust outlet 668 of the first joint exhaust passage box 665.
(FIG. 12), the other end of the exhaust hose 680 is connected to the exhaust inlet 63 of the suction main body 61 provided behind the suction main body 61.
0 (FIG. 11). Then, the exhaust gas from the first joint exhaust passage 666 passes through the exhaust outlet 668, the inside of the exhaust hose 680, and the exhaust inlet 630, and passes through the suction main body 6.
1 so that the rotating brush 620 is rotated and, at the same time, exhaust air is blown to the cleaning surface.

One end of the exhaust hose 680 is fixedly connected to the exhaust outlet 668 of the first joint exhaust passage box 665, and the other end of the exhaust hose 680 is attached to and detached from the exhaust inlet 630 of the suction main body 61. They are connected as possible. Therefore, by removing the other end of the exhaust hose 680 from the exhaust inlet 630, the exhaust hose 680 can be used as a blower.

The second joint 670 is connected to the second joint intake pipe 6.
One end of the second joint intake pipe 671 is connected to the end of the first joint intake pipe 661 so as to be able to face each other, and the second joint intake pipe 671 is connected to the second joint intake pipe 671. The one-joint intake pipe 661 communicates with the outside air while maintaining an airtight state. The other end of the second joint suction pipe 671 is connected to the rear center holding portion of the suction main body 61 so as to be able to face each other, and communicates with the suction outlet 630 of the suction main body 61 while maintaining an airtight state with the outside air. are doing. Second joint intake pipe 671
Is formed as a second joint intake passage 672, and the intake air from the inlet main body 61 flows into the second joint intake passage 672 through the intake outlet 630 of the inlet main body 61, and the second joint intake passage 672 is formed. Intake from the first joint intake passage 662
It is designed to flow into.

As described above, according to the present embodiment, the space between the electric blower 107 of the cleaner body 10 and the suction body 61 of the suction body 60 is provided between the cleaner body 10, the body joint 20, the composite hose 30, and the extension pipe. The exhaust air sent from the electric blower 107 can be sent back to the suction body 61 because the intake air passage and the exhaust air passage formed in the suction joint 65 of the suction body 60 and the suction joint 65 of the suction body 60, respectively. This realizes a recirculating vacuum cleaner.

In the present embodiment, in such a recirculating vacuum cleaner, as described above, the composite hose 3 is used.
Since the outer hose 310 is made of a material such as a non-woven fabric or a mesh-like cloth through which air can slightly pass (air can leak slightly), the outer hose 3
A part of the exhaust gas flowing through the composite hose exhaust flow path 340 inside the inner hose 10 can be uniformly and slowly discharged to the outside air over substantially the entire outer periphery of the outer hose 310. For this reason, the exhaust gas is not completely circulated, but a part of the exhaust gas is allowed to escape to the outside air, so that the adverse effect of the heat circulation can be suppressed. There is no danger of dust rising from the cleaning surface due to the discharge.

In the present embodiment, the mouthpiece 60
In the above, since one end of the exhaust hose 680, which is a part of the constituent members of the exhaust air passage, can be removed, the exhaust hose 680 can be used as a blower, improving the convenience for the user. Moreover, in the mouthpiece 60 portion configured as a single unit,
Since one end of the short exhaust hose 680 can be removed, the exhaust hose 680 can be used as a blower.
Is not entangled and has good handleability, and when connecting the mouthpiece 60 and the extension pipe 50, there is no need to connect the exhaust hose 680. Excellent usability can be achieved. In the present embodiment, the exhaust hose 68
0, the diameter of one exhaust hose 680 can be reduced.
By giving a twisting operation to the extension tube 50 by
Even when the suction body 61 of the suction body 60 is rotated left and right by about 90, the exhaust hose 680 does not become a resistance, and the suction body 61 can be smoothly rotated on the cleaning surface.

Further, in the present embodiment, the extendable extension tube 50 is provided, and even if the first tube 51 and the second tube 55 of the extension tube 50 slide relative to each other, the first tube 51 is not moved. The intake air passage and the intake air passage of the second pipe 55 are always in communication, and the exhaust air passage of the first pipe 51 and the second pipe 55
Is always in communication with the exhaust air passage, so that a recirculating vacuum cleaner having a telescopic extension tube 50 can be realized. Furthermore, since the composite hose 30 and the extension pipe 50 have a single, neat configuration in appearance, a reflux-type vacuum cleaner having a compact conveyance path member and excellent in handleability can be realized. .

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 13 is a perspective view showing the general outline of a recirculating vacuum cleaner according to a second embodiment of the present invention.

In FIG. 13, reference numeral 10 denotes a cleaner main body having a built-in electric blower, a control circuit, and the like, and the internal configuration thereof is the same as that of the first embodiment. Reference numeral 20 denotes a body joint attached to and coupled to the cleaner body 10, and a handle 21 is provided integrally. The internal configuration of the main body joint 20 is the same as that of the first embodiment.

Reference numeral 30 denotes a flexible composite hose having one end attached to the body joint 20. In this embodiment, the composite hose 30 is longer than the composite hose of the first embodiment. The other end of the composite hose 30 is connected to a suction joint 85 of the suction body 80. The configuration of the composite hose 30 is also basically the same as that of the first embodiment. However, the amount of air discharged from the outer hose of the composite hose 30 of the present embodiment to the outside air and the composite hose 30 of the first embodiment are different. In the present embodiment, the air permeability of the material of the outer hose of the composite hose 30 is set lower than that of the first embodiment so that the amount of exhaust gas discharged from the outer hose to the outside air is substantially the same. It is.

Reference numeral 45 denotes a hand handle. In the present embodiment, the hand handle 45 and the mouthpiece joint 85 of the mouthpiece 80 are interconnected by a support connection bar 70. The composite hose 30 extends through the hand handle 45, and an intermediate portion of the composite hose 30 is attached to the holding portion 46 of the handle 45.
, Is gently penetrated and held. The handle 45 is provided with a grip portion 47 for the user to hold by hand and a hand operation portion 48 for performing an operation input. The grip portion 47 includes a support connecting bar 70.
Is used to transfer the suction body 80 on the cleaning surface through the suction port, and by rotating the suction joint 85 of the suction body 80 by the grip portion 47, the suction body 80 is rotated about 90 to the left and right. Used for The operation input from the hand operation unit 48 is transmitted to a control circuit in the cleaner main body 10 by optical communication using infrared light.

Reference numeral 80 denotes a suction body, which is provided with a suction body 81 and a suction joint 85. The structure of the suction body 81 is the first structure.
The configuration is substantially the same as the configuration of the mouthpiece main body 61 of the embodiment. The inlet joint 85 has a first joint 860 and a second joint 870,
One end of the second joint 870 is coupled to and held by the suction main body 81 so as to be rotatable in the vertical direction with respect to the suction main body 81, and the other end of the second joint 870 is connected to the suction main body 81. One end of the first joint 860 is connected and held so as to be rotatable in the left-right direction.

Although not shown, inside the first joint 860, the first joint intake passage communicating with the composite hose intake passage in the inner hose of the composite hose 30 and the outer periphery of the inner hose of the composite hose 30 are provided. A first joint exhaust passage communicating with a composite hose exhaust passage formed between the inner periphery of the outer hose and the composite hose exhaust passage is provided. One end of an exhaust hose 680 is connected and fixed to the outlet of the first joint exhaust passage of the first joint 860, and the other end of the exhaust hose 680 is detachably connected to an exhaust inlet provided in the suction body 81. ing. Further, the second joint 870 is provided with a second joint intake passage communicating with the first joint intake passage of the first joint 860, and the second joint intake passage communicates with the inside of the inlet main body 81. It has become.

Therefore, also in the present embodiment, the space between the electric blower of the cleaner body 10 and the suction body 81 of the suction body 80 is changed by the cleaner body 10, the body joint 20, and the composite hose 3.
0, since the intake air passage and the exhaust air passage formed in the intake joint 85 of the intake body 80 communicate with each other, the exhaust air sent from the electric blower can be exhausted from the intake main body 8.
1 can be sent back, thereby realizing a recirculating vacuum cleaner.

In the present embodiment, in such a recirculation type vacuum cleaner, as in the first embodiment, air such as a nonwoven fabric or a mesh-like cloth can slightly pass through the outer hose of the composite hose 30. Because it is made of a material (which allows air to leak out slightly), a part of the exhaust flowing through the composite hose exhaust flow path inside the outer hose can be evenly and gently spread over almost the entire outer circumference of the outer hose. Can be drained to For this reason, the exhaust gas is not completely circulated, but a part of the exhaust gas is released to the outside air, so that the adverse effect of the heat circulation can be suppressed.In addition, the exhaust gas flows out to the outside air over substantially the entire outer circumference of the outer hose. As a result, there is no danger of dust rising from the cleaning surface.

Also in this embodiment, the mouthpiece 80
In the above, since one end of the exhaust hose 680 which is a part of the constituent members of the exhaust air passage is made removable, the exhaust hose 680 can be used as a blower, and the same effects as those of the first embodiment can be obtained. Play and become easy to use.

Further, in the present embodiment, since the cleaner main body 10 and the suction body 80 are connected by the composite hose 30, the overall configuration becomes simple and the cost can be reduced. Becomes

Next, a third embodiment of the present invention will be described with reference to FIGS. FIG. 14 shows a third embodiment of the present invention.
It is principal part sectional drawing of the extension pipe in the recirculation type vacuum cleaner by embodiment, and FIG. 15 is the principal part top view of the extension pipe similarly. 14 and 15, the same components as those of the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted to avoid duplication (the same applies to the following embodiments). is there).

In FIGS. 14 and 15, reference numeral 595 denotes a component of the second pipe 55 in the extension pipe 50, which is located on the upper surface of the end of the second pipe exhaust pipe 560 (the end on the suction body side). A plurality of exhaust holes formed in the second exhaust pipe 560 communicate the second exhaust pipe 580 in the second exhaust pipe 560 with the outside air. Note that the exhaust holes 595
Is formed on the upper surface of the end position exposed to the outside in the second tube 55 even when the second tube 55 enters the first tube 51 most.

In this embodiment, the outer hose of the composite hose 30 is also made of air-tight PVC like the inner hose, and a part of the circulating exhaust gas is supplied to the second pipe 5.
5. The above-described exhaust hole 59 formed on the upper surface of the end portion on the suction body side of No. 5
5 to the outside air.

Also in the present embodiment, in the recirculation type vacuum cleaner, a part of the circulating exhaust gas can flow out to the outside air, so that adverse effects due to heat circulation can be suppressed. Further, since the exhaust gas flows out to the outside air from the upper surface of the end of the extension pipe 50 (the upper surface of the end of the second pipe 55 in the extension pipe 50), there is no possibility that the dust is soared from the cleaning surface by the discharge of the exhaust, and There is no need to worry about the spilled exhaust being blown to the user.

Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 16 is a cross-sectional view showing a configuration around a hand handle in a recirculating vacuum cleaner according to a fourth embodiment of the present invention.

In FIG. 16, reference numeral 461 designates a plurality of exhaust holes formed in the lower surface of the extension pipe side joint outer pipe 460 of the extension pipe side joint 450 of the hand handle 40, The extension pipe side joint portion exhaust flow passage 490 formed in the inside 450 is communicated with the outside air side.

In this embodiment, the outer hose of the composite hose 30 is also made of air-tight PVC like the inner hose, and a part of the circulating exhaust gas is supplied to the lower surface of the handle 40 (hand handle). 40 extension pipe side joint 450
The lower surface of the outer pipe body 460 at the extension pipe side of the outer pipe 460) is discharged to the outside air from the above-described exhaust hole 461.

Also in the present embodiment, in the recirculation type vacuum cleaner, a part of the circulating exhaust gas can be discharged to the outside air, so that adverse effects due to heat circulation can be suppressed. In addition, since the exhaust gas flows out from the lower surface of the hand handle 40 (the lower surface of the extension tube side joint outer tube 460 of the extension tube side joint portion 450 of the hand handle 40) to the outside air, in the normal use form at the time of cleaning, the hand Since the handle 40 is sufficiently separated from the cleaning surface, there is no danger that dust will fly up from the cleaning surface due to the discharge of exhaust gas, and there is no fear that the exhaust gas that has flowed out to the user will be blown.

Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 17 is a cross-sectional view illustrating a configuration around a main body joint in a recirculating vacuum cleaner according to a fifth embodiment of the present invention.

In FIG. 17, reference numeral 215 denotes a body joint 20.
Upper surface of a predetermined portion of the body joint outer tube 210,
That is, in the body joint 20 connected to the cleaner body 10, a plurality of body joint outer pipes 210 exposed to the outside from the cleaner body 10 are provided with a plurality of holes formed on the upper surface near the portion closest to the cleaner body 10. This is an exhaust hole.
Numeral 5 communicates the body joint exhaust passage 231 formed between the inner periphery of the body joint outer tube 210 and the outer periphery of the body joint inner tube 220 with the outside air side.

In the present embodiment, the outer hose of the composite hose 30 is also formed of airtight PVC or the like like the inner hose, and a part of the circulated exhaust gas is
Upper surface (the upper surface of the body joint outer tube 210 of the body joint 20)
And is discharged to the outside air from the above-described exhaust hole 215.

Also in this embodiment, in the recirculation type vacuum cleaner, a part of the circulating exhaust gas can be discharged to the outside air, so that adverse effects due to heat circulation can be suppressed. Further, since the exhaust gas flows out to the outside air from the upper surface of the body joint 20 (the upper surface of the outer tube 210 of the body joint 20 of the body joint 20), there is no danger that the dust is soared from the cleaning surface due to the discharge of the exhaust gas, and the outflow to the user The possibility that the exhaust gas blows is reduced as much as possible.

In addition to the partial discharge of exhaust gas from the composite hose 30 according to the first embodiment, the third
Partial emission of exhaust gas according to the fifth to fifth embodiments may be combined, or the above-described third to fifth embodiments may be appropriately combined.

Next, a sixth embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. The present embodiment is an example in which an attachment for suction cleaning is attached to the end of the extension tube 50 from which the mouthpiece has been removed or the end of the handle 40 from which the extension tube has been removed. The basic configuration of the present embodiment is substantially the same as that of the first embodiment. However, the present embodiment is different from the first embodiment in that the end portion of the extension tube 50 or the hand handle 40 of the hand handle 40 is changed depending on the attachment of the attachment member. The opening of the exhaust air passage exposed at the end is closed, and the extension pipe 50 or the hand handle 40 is closed.
The shutter member, which covers the hole formed in the outer periphery of the shutter so as to be openable and closable, is shifted to the open position, and the exhaust from the intake air passage of the extension pipe or the hand handle flows out to the outside air through the hole opened by the shift of the shutter member. It is intended to be.

FIG. 18 is a side view showing the configuration of the hand handle 40 and the extension tube 50 in the recirculation type vacuum cleaner according to the sixth embodiment of the present invention. In FIG. 18, a part of the extension tube is omitted. It is. FIG. 19 is a side view showing a configuration of the extension tube 50 in a state where the extension tube 50 is removed in the present embodiment, and FIG. 20 is a diagram of FIG. 19 viewed from the arrow P direction of FIG. In FIG. 20, a part is cut away.

18 to 20, reference numeral 1001 denotes an arc-shaped shutter groove having a predetermined width formed in the vicinity of an end of the outer tube 460 of the extension tube side joint portion 450 of the extension tube side joint portion 450 of the hand handle 40. Then, this shutter groove 100
1, a shutter member 1002 having an arc shape and a predetermined width is attached so as not to fall out and to be slidable. The shutter member 1002 is biased in the closing direction by a spring portion 1003 integrally formed with itself. Habits are given. An exhaust hole 1005 is formed in the shutter groove 1001, and the exhaust hole 1005 is
When the shutter member 1002 is moved to the open position, it is exposed when the shutter member 002 is in the closed position. The exhaust hole 1005 is provided at the extension pipe side joint 450.
The exhaust pipe 490 (FIG. 8) formed in the extension pipe side joint portion communicates with the shutter member 100.
2 is in the open position, the extension pipe side joint portion exhaust passage 4
Exhaust air from the air outlet 90 can flow out to the outside air through an exhaust hole 1005. Reference numeral 1004 denotes a projection formed on the back surface side of the shutter member 1002,
5, when the attachment for suction cleaning described later is attached to the extension tube side joint portion 450 of the hand handle 40, the projection 1004 is pressed,
The shutter member 1002 shifts to the open position.

FIG. 21 shows the structure of the mouthpiece 60 in this embodiment.
FIG. 22 is a side view of a main part of the extension tube 50 with the pod removed.
FIG. 22 is a plan view of a main part of the extension tube 50 corresponding to FIG. 21.
FIG. 23 is a plan view of a main part of the extension tube 50 when the shutter member provided on the extension tube 50 shifts to the open position from the state of FIG.

In FIG. 18, FIG. 21 to FIG.
Reference numeral 1 denotes an arc-shaped and predetermined-width shutter groove formed near the end of the second pipe 55 in the extension tube 50. The arc-shaped and predetermined-width shutter member 1102 does not fall into the shutter groove 1101, and The shutter member 1102 is provided with a biasing behavior in the closing direction by a spring portion 1103 integrally formed with the shutter member 1102. The shutter groove 1101 has an exhaust hole 110
5 (only the positions are indicated by reference numerals in FIGS. 18 and 21) and a window hole 1106 are formed. When the shutter member 1102 is in the closed position (FIG. 18, FIG. 21 and 22) are closed, and are exposed when the shutter member 1102 shifts to the open position (FIG. 23). The exhaust hole 1105 communicates with the extension pipe exhaust outlet channel 581 formed in the second pipe exhaust pipe 560 of the second pipe 55. Therefore, when the shutter member 1102 is at the open position (FIG. 23), the exhaust from the extension pipe exhaust outlet channel 581 can flow to the outside air through the exhaust hole 1105. Reference numeral 1104 denotes a protrusion formed on the back surface side of the shutter member 1102, which passes through the window hole 1106, and is attached to the end of the extension tube 50 (the end of the second tube 55) by a suction cleaning attachment described later. When mounted on the projection 11
The shutter member 1102 shifts to the open position when 04 is pressed.

FIG. 24 is a side view of the handle 40 in the present embodiment when an attachment for suction cleaning is attached to the handle 40.

In FIG. 24, reference numeral 1200 denotes a suction cleaning attachment for a hand handle which is detachably connected to the end of the extension pipe side joint portion 450 of the hand handle 40. The suction cleaning attachment 1200 has an intake air flow path therein, and a brush 1201 is provided at a distal end thereof, and a mounting portion 1202 to the extension pipe joint 450 is provided at a proximal end thereof. Is provided.

When the mounting portion 1202 of the suction cleaning attachment 1200 is mounted on the end of the joint portion 450 on the extension pipe side, although not shown, a part of the mounting portion 1202 is connected to the extension pipe side of the joint portion 450 on the extension pipe side. Joint part exhaust flow path 490
The extension pipe side joint part exhaust passage 490 is closed, and the intake air flow path of the attachment 1200 communicates with the extension pipe side joint part intake passage 480 of the extension pipe side joint part 450. Further, the projection 1203 provided on the mounting portion 1202 presses the projection 1004 of the shutter member 1002 to shift the shutter member 1002 to the open position, and expose the exhaust hole 1005 to the outside. In addition, it is also possible to constitute so that the installation state of the suction cleaning attachment 1200 is maintained using the above-mentioned lock member 495 or the like.

When the suction cleaning attachment 1200 is attached to the extension pipe side joint 450, the suction cleaning attachment 1200 passes through the hand handle 40, the composite hose 30, and the main body joint 20, and passes through the cleaner main body 1.
The intake air flows to zero. On the other hand, the exhaust air from the cleaner main body 10 flows into the hand handle 40 via the main body joint 20 and the composite hose 30, but the exhaust pipe 49 on the extension pipe side joint portion.
Since the opening of No. 0 is closed and the exhaust hole 1005 communicates with the outside air side, the exhaust gas is released to the outside air through the exhaust hole 1005.

As described above, in the state where the suction cleaning attachment 1200 is mounted, the reason why (1) is to close the opening of the exhaust pipe 490 of the extension pipe side joint and to allow the exhaust to flow from the exhaust hole 1005 to the outside air side. ) When attachment 1200 is attached, attachment 1200
To prevent exhaust from being blown around the
(2) If the opening of the exhaust passage 490 is simply closed, there is no place for the exhaust to escape, and the electric blower 107 cannot exhibit the suction force. In the present embodiment, the above (1) and (2) are eliminated, and in the recirculation type vacuum cleaner, the suction cleaning can be performed by installing the suction cleaning attachment, so that the usability is greatly improved for the user. .

FIG. 25 shows an extension pipe 5 according to this embodiment.
FIG. 6 is a side view of a main part of the extension tube 50 when an attachment for suction cleaning is attached to the attachment tube 0.

In FIG. 25, reference numeral 1300 denotes an extension pipe 50.
Is a suction cleaning attachment for an extension pipe detachably connected to the second pipe 55 of FIG. The suction cleaning attachment 1300 has an intake air flow path therein, and a brush 1301 is provided at a distal end thereof, and a mounting portion 1 for the second pipe 55 is provided at a proximal end thereof.
302 is provided.

When the attachment portion 1302 of the suction cleaning attachment 1300 is attached to the end of the second tube 55, a part of the attachment portion 1302 is not shown in FIG. Close the opening of the outlet channel 581,
Also, the intake air flow path of the attachment 1300 is
The pipe 55 communicates with the second pipe intake passage 570 of the pipe 55,
Further, the protrusion 1303 provided on the mounting portion 1302 presses the protrusion 1104 of the shutter member 1102 to shift the shutter member 1102 to the open position, and the exhaust hole 1105
To the outside. In addition, it is also possible to comprise so that the attachment state of the suction cleaning attachment 1300 may be maintained by the lock member.

When the suction cleaning attachment 1300 is attached to the second pipe 55, the suction cleaning attachment 1300 is connected to the extension pipe 50 and the handle 4 at hand.
0, the intake air flows into the cleaner body 10 via the composite hose 30 and the body joint 20. On the other hand, the exhaust air from the cleaner main body 10 flows into the extension pipe 50 via the main body joint 20, the composite hose 30, and the hand handle 40, but the opening of the extension pipe exhaust outlet flow path 581 is closed, and the exhaust air is exhausted. Since the use hole 1105 communicates with the outside air, the exhaust gas is released to the outside air through the exhaust hole 1105.

As described above, even when the suction cleaning attachment 1300 is mounted, the above-mentioned (1),
By resolving the point (2), in the recirculating vacuum cleaner,
By attaching the suction cleaning attachment, suction cleaning becomes possible, and the usability is greatly improved for the user.

When the suction cleaning attachment is mounted, the opening of the exhaust air passage is closed, and the shutter member provided at an appropriate position is opened by a manual operation so that the exhaust hole is exposed. Is also possible.

[0099]

As described above, according to the present invention, in a recirculation type vacuum cleaner having an exhaust gas circulation structure, there is provided a product which suppresses a rise in temperature due to heat circulation and which does not have a possibility of causing dust on a cleaning surface to fly up. Can be provided.

The exhaust can be used as a blower.
A reflux-type vacuum cleaner that is easy to handle can be provided.

Further, it is possible to provide a recirculation type vacuum cleaner which does not impair the cleaning performance even when the suction cleaning attachment is attached.

Further, it is possible to provide an easy-to-use reflux-type vacuum cleaner having a telescopic extension tube.

As a whole, it is possible to provide a recirculation type vacuum cleaner which is highly reliable, easy to handle, and convenient for the user and easy to use.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an overall outline of a vacuum cleaner according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional side view of a cleaner main body in the vacuum cleaner according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional front view of the main body of the vacuum cleaner in the vacuum cleaner according to the first embodiment of the present invention.

FIG. 4 is a perspective view of the main body of the vacuum cleaner according to the first embodiment of the present invention with the upper case removed and a dust collection cover opened.

FIG. 5 is a perspective view showing a configuration of a main part of a lower case side of the cleaner body in the vacuum cleaner according to the first embodiment of the present invention.

FIG. 6 is a cross-sectional view of an end portion of the body joint and the composite hose in the vacuum cleaner according to the first embodiment of the present invention.

FIG. 7 is a cross-sectional view of a hand handle and an extension tube in the vacuum cleaner according to the first embodiment of the present invention.

FIG. 8 is an enlarged view of a main part of FIG. 7;

FIG. 9 is a cross-sectional view of a main part of an extension tube in the vacuum cleaner according to the first embodiment of the present invention.

FIG. 10 is a plan view of an extension pipe in the vacuum cleaner according to the first embodiment of the present invention.

FIG. 11 is a plan view of a main part of the mouthpiece and the extension tube, partially cut away, of the vacuum cleaner according to the first embodiment of the present invention.

FIG. 12 is a sectional view taken along line AA of FIG. 11;

FIG. 13 is a perspective view showing an overall outline of a vacuum cleaner according to a second embodiment of the present invention.

FIG. 14 is a sectional view of a main part of an extension tube in a vacuum cleaner according to a third embodiment of the present invention.

FIG. 15 is a plan view of a main part of an extension tube in a vacuum cleaner according to a third embodiment of the present invention.

FIG. 16 is a cross-sectional view showing a configuration around a hand handle in a vacuum cleaner according to a fourth embodiment of the present invention.

FIG. 17 is a cross-sectional view showing a configuration around a main body joint in a vacuum cleaner according to a fifth embodiment of the present invention.

FIG. 18 is a side view of a hand handle and an extension tube in a vacuum cleaner according to a sixth embodiment of the present invention.

FIG. 19 is a side view of the hand handle of the vacuum cleaner according to the sixth embodiment of the present invention with the extension tube removed.

20 is an explanatory diagram viewed from the direction of arrow P in FIG. 19;

FIG. 21 is a side view of a main part of an extension pipe of a vacuum cleaner according to a sixth embodiment of the present invention with a suction body removed.

FIG. 22 is a plan view of a main part of the extension tube corresponding to FIG. 21;

FIG. 23 is a plan view of a main part of the extension pipe when the shutter member shifts to the open position from the state of FIG. 21;

FIG. 24 is a side view showing a state of attachment of a suction cleaning attachment to a handle at hand in a vacuum cleaner according to a sixth embodiment of the present invention.

FIG. 25 is a side view showing a state of attachment of a suction cleaning attachment to an extension pipe in a vacuum cleaner according to a sixth embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Vacuum cleaner main body 20 Main body joint 30 Composite hose 40 Hand handle 41 Grip part 42 Hand operation part 45 Hand handle 50 Extension pipe 51 First pipe 55 Second pipe 60 Suction body 61 Suction body 65 Suction joint 70 Support connection Bar 80 Suction body 81 Suction body 85 Suction joint 103 Dust cover 105 Dust collection chamber 107 Electric blower 116 Opening 120 Ventilation path in motor cover 121 Ventilation path in upper case 122 Ventilation path in lower case 124 Filter storage chamber 130 Lower case exhaust Flow path 131 Lower case exhaust flow path outlet 141 Dust collection lid exhaust flow path entrance 142 Dust collection lid exhaust flow path 143 Dust collection lid exhaust flow path exit 150 Connection hole 210 Main body joint outer pipe 212 Main body joint exhaust flow path entrance 215 Exhaust hole 220 Body joint inner tube 222 End opening 230 Body joint intake passage 231 Body joint exhaust passage 310 Outer hose 320 Inner hose 330 Composite hose intake passage 340 Composite hose exhaust passage 350 Seal ring 360 Locking ring 400 Extension tube side joint 410 Hose side joint outer tube 420 Hose side joint inner tube Body 430 Hose-side joint intake passage 440 Hose-side joint exhaust passage 441 Exhaust passage outlet 450 Extension tube joint 451 Seal ring 452 Locking ring 460 Extension tube joint outer tube 461 Exhaust hole 470 Extension tube Side joint inner pipe 480 Extension pipe side joint intake air flow path 490 Extended pipe side joint exhaust flow path 491 Exhaust flow path inlet 495 Lock member 510 First outer pipe 512 Locking cylinder 520 First pipe inner pipe 530 First pipe intake passage 540 First pipe exhaust passage 550 Second pipe intake pipe 560 Second pipe exhaust Pipe 570 Second pipe intake flow path 580 Second pipe exhaust flow path 581 Extension pipe exhaust outlet flow path 590 Lock member 595 Exhaust hole 610 Opening 620 Rotary brush 630 Exhaust inlet 660 First joint 661 For first joint intake Tube 662 First joint intake passage 665 First joint exhaust passage box 666 First joint exhaust passage 668 Exhaust outlet 670 Second joint 671 Second joint intake tube 672 Second joint intake passage 680 Exhaust hose 860 First joint 870 Second joint 1001 Shutter groove 1002 Shutter member 1003 Spring portion 1005 Exhaust hole 1101 Shutter groove 1102 Shutter member 1103 Spring portion 1105 Exhaust hole 1200 Attachment for suction cleaning for hand handle 1300 For suction cleaning for extension pipe Attachment

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A47L 9/08 A47L 9/08 (72) Inventor Yoji Nakagawa 1-280, Higashi-Koigabo, Kokubunji-shi, Tokyo Hitachi, Ltd. F-term in the Design Laboratory (Reference) 3B006 BA01 BA05 BA06 BA07 3B057 BA09 BA22 BA23 BA25 BA27 BA32 3B061 AH02 AH04

Claims (15)

[Claims] 1. A cleaner main body provided with an electric blower for sucking dust into a dust collecting chamber, a suction body having an opening on a lower surface and operated to move on a cleaning surface, the cleaner body and the suction body And an intake air passage for sending dust into the dust collection chamber together with the airflow, and an airflow sent from the electric blower communicating the cleaner body and the suction body into the suction body. Composite piping means having an exhaust air passage for feeding in,
In the provided electric vacuum cleaner, in a section between the cleaner main body and the suction body, a part of the exhaust air sent from the electric blower is caused to flow out to the outside air side from the composite piping means. And vacuum cleaner. 2. The composite piping means according to claim 1, wherein a part of the composite piping means is constituted by a flexible composite hose member having a double-pipe structure, and the composite hose member has an inner circular pipe section. The exhaust air passage is used as the intake air passage and the outer annular pipe is used as the exhaust air passage, and a part of the exhaust gas sent from the electric blower flows out to the outside air side from the outer peripheral surface of the composite hose member. An electric vacuum cleaner characterized by being made to make it. 3. The composite piping means according to claim 1, wherein said composite piping means comprises a flexible composite hose member having a double-pipe structure, and said composite hose member passes through said conduit having a circular inner cross section through said intake pipe. The exhaust air passage is used as an exhaust air passage while the outer annular pipe is used as the exhaust air passage, and a linear support member made of a rigid material is attached to a part of the composite hose member. An electric vacuum cleaner wherein a part of exhaust air sent from the electric blower is caused to flow to the outside air side from an outer peripheral surface of a composite hose member. 4. The outer hose of the composite hose member according to claim 2, wherein the outer hose of the composite hose member is made of a material such as a nonwoven fabric or a mesh-like cloth that is slightly permeable to air. A part of the exhaust air sent from the electric blower is caused to flow out to the outside air side. 5. The composite pipe member according to claim 1, wherein one end of the composite piping means is connected to the cleaner body and has the intake air passage and the exhaust air passage, and one end is the composite hose. A hand handle connected to the other end of the member and having the intake air passage and the exhaust air passage; and one end connected to the other end of the hand handle and having the intake air passage and the exhaust air passage An electric cleaning comprising an extension pipe, wherein a part of exhaust air sent from the electric blower is caused to flow out to the outside air side from an upper surface side of a joint member between the cleaner body and the composite hose member. Machine. 6. The composite pipe member according to claim 1, wherein one end of the composite piping means is connected to the cleaner body and has the intake air passage and the exhaust air passage, and one end is the composite hose. A hand handle connected to the other end of the member and having the intake air passage and the exhaust air passage; and one end connected to the other end of the hand handle and having the intake air passage and the exhaust air passage An electric vacuum cleaner comprising: an extension pipe; and a part of exhaust air sent from the electric blower is allowed to flow to the outside air side from a lower surface side of the hand handle. 7. The composite hose member according to claim 1, wherein one end of the composite piping means is connected to the cleaner body and has the intake air passage and the exhaust air passage, and one end is the composite hose. A hand handle connected to the other end of the member and having the intake air passage and the exhaust air passage; and one end connected to the other end of the hand handle and having the intake air passage and the exhaust air passage An electric vacuum cleaner, comprising: an extension pipe, wherein a part of the exhaust air sent from the electric blower is caused to flow to the outside air side from an upper surface side of the extension pipe. 8. A cleaner main body provided with an electric blower for sucking dust into the dust collection chamber, a suction body having an opening on a lower surface and operated to move on a cleaning surface, the cleaner body and the suction body And an intake air passage for sending dust into the dust collection chamber together with the airflow, and an airflow sent from the electric blower communicating the cleaner body and the suction body into the suction body. Composite piping means having an exhaust air passage for feeding in,
In the vacuum cleaner provided, one end of a short exhaust hose, which is a part of a member forming the exhaust air passage in the composite piping means, can be detached from the suction body as blower means for blowing exhaust. A vacuum cleaner characterized by being made available. 9. The exhaust hose according to claim 8, wherein the flexible exhaust hose for communicating the exhaust air passage formed in the joint member of the mouthpiece with the inside of the mouthpiece body of the mouthpiece. Provided outside the mouthpiece,
A vacuum cleaner wherein one end of the exhaust hose is detachable from the suction body. 10. The vacuum cleaner according to claim 9, wherein a plurality of the exhaust hoses are provided. 11. A cleaner main body provided with an electric blower for sucking dust into the dust collection chamber, a suction body having an opening on a lower surface and operated to move on a cleaning surface, the cleaner body and the suction body And an intake air passage for sending dust into the dust collection chamber together with the airflow, and an airflow sent from the electric blower communicating the cleaner body and the suction body into the suction body. Composite piping means having an exhaust air passage for feeding in,
In the provided vacuum cleaner, the composite piping means includes a plurality of composite piping units detachably connected, and at an end of the composite piping unit,
An attachment member for suction cleaning can be attached so as to be communicated with the intake air passage of the composite piping unit, and the exhaust air passage exposed at an end of the composite piping unit is attached by attaching the attachment member. While closing the opening, the shutter member that covers the hole formed on the outer periphery of the composite piping unit so as to be openable and closable is shifted to the open position, and the hole of the composite piping unit is passed through the hole formed on the outer periphery of the composite piping unit. An electric vacuum cleaner wherein exhaust gas from an exhaust air passage is caused to flow to the outside air. 12. The composite piping member according to claim 11, wherein one end of the composite piping means is connected to the cleaner body and has the intake air passage and the exhaust air passage, and one end is the composite hose. A hand handle connected to the other end of the member and having the intake air passage and the exhaust air passage; and one end connected to the other end of the hand handle and having the intake air passage and the exhaust air passage An electric vacuum cleaner comprising: an extension tube; wherein the attachment member can be attached to at least one of the other end of the handle and the other end of the extension tube. 13. The shutter member according to claim 11, wherein the shutter member receives a biasing force in a direction to close the hole formed on the outer periphery of the composite piping unit by a spring unit formed integrally with the shutter member. An electric vacuum cleaner characterized by the above. 14. A cleaner main body provided with an electric blower for sucking dust into the dust collection chamber, a suction body having an opening at a lower surface and operated to move on a cleaning surface, the cleaner body and the suction body And an intake air passage for sending dust into the dust collection chamber together with the airflow, and an airflow sent from the electric blower communicating the cleaner body and the suction body into the suction body. Composite piping means having an exhaust air passage for feeding in,
In the vacuum cleaner provided, the composite pipe means has a composite hose member having one end connected to the cleaner main body and having the intake air passage and the exhaust air passage, and one end connected to the other end of the composite hose member. A hand handle having the intake air passage and the exhaust air passage, and an extension pipe having one end connected to the other end of the hand handle and having the intake air passage and the exhaust air passage. The extension pipe includes a first pipe connected at one end to the other end of the hand handle, and is slidably connected inside the first pipe, and has another end connected to the mouthpiece. The first tube is a first tube forming the intake air passage.
A first air passage portion and a first air passage portion forming the exhaust air passage
The exhaust pipe section has a composite pipe structure formed adjacent to the exhaust pipe section, and the second pipe body is a second pipe section forming the intake air passage.
A second air passage portion and the second air passage portion forming the exhaust air passage
Takes a composite pipe structure formed adjacent to the first exhaust air pipe section, wherein the second intake air pipe section is slidable within the first intake air pipe section, An electric vacuum cleaner wherein the second exhaust air pipe section is slidable within the air pipe section. 15. The vacuum cleaner according to claim 14, wherein the composite hose member has a double-pipe structure in which a flexible inner hose member is inserted into a flexible outer hose member. .