JPWO2017183254A1 - Electric vacuum cleaner - Google Patents

Abstract

To reduce the size and weight of the suction port of the vacuum cleaner. A vacuum cleaner main body with an electric blower for sucking dust and a dust collecting chamber for storing sucked dust, a suction port body having a suction port for sucking dust, and a vacuum cleaner body connected to the suction port body A suction channel that connects the suction port and the connection tube, a rotating brush provided in the suction port, a self-propelled roller that runs the suction port body, First and second electric motors for driving the rotating brush and the self-running roller, respectively, and an air passage connected to the suction passage from an opening for sucking outside air formed in a part of the suction port body, A vacuum cleaner characterized in that at least one of the first and second electric motors is brought into contact with outside air passing through the air passage to cool it.

Description

  The present invention relates to a vacuum cleaner.

  As a background art of the present invention, there is known an electric vacuum cleaner in which an electric blower and a vacuum cleaner main body including a dust collecting chamber are connected to a suction port body having a rotary brush and a wheel and driving an electric motor. (For example, refer to Patent Documents 1 and 2).

JP 2000-37325 A Japanese Patent Laid-Open No. 7-8417

  However, in such a conventional vacuum cleaner, as one countermeasure for improving the operability, it is desired to reduce the size and weight of the suction port body, and in particular, to reduce the size and weight of the electric motor mounted on the suction port body. It was.

  The present invention has been made in consideration of such circumstances, and provides a vacuum cleaner that can be reduced in size and weight by cooling an electric motor mounted on a suction port body.

  The present invention relates to a vacuum cleaner body including an electric blower for sucking dust and a dust collecting chamber for storing sucked dust, a suction port body having a suction port for sucking dust, and a suction body for the vacuum cleaner. A suction pipe that connects the suction port and the connection pipe, a rotary brush provided in the suction port, and a self-running travel of the suction mouth body. A running roller, first and second electric motors that respectively drive the rotating brush and the self-running roller, and an air passage connected to the suction passage from an opening for sucking outside air formed in a part of the suction port body And providing at least one of the first electric motor and the second electric motor to the outside air passing through the air passage to cool the electric vacuum cleaner.

  According to the present invention, since the outside air is sucked from the opening for sucking the outside air formed in a part of the suction port body and is cooled by being brought into contact with at least one of the first and second electric motors, it is mounted on the suction port body. This makes it possible to reduce the size and weight of the motor.

BRIEF DESCRIPTION OF THE DRAWINGS It is an external appearance perspective view which shows 1st Embodiment of the vacuum cleaner of this invention. It is internal structure explanatory drawing of the vacuum cleaner shown in FIG. It is a perspective view which shows the suction inlet body of the vacuum cleaner of FIG. It is a bottom view which shows the suction inlet body of the vacuum cleaner of FIG. It is a longitudinal cross-sectional view which shows the suction inlet body of the vacuum cleaner of FIG. It is a perspective view which shows the drive roller unit in the suction inlet of the vacuum cleaner of FIG. It is a disassembled perspective view of the suction inlet body of the vacuum cleaner of FIG. It is explanatory drawing which shows the rocking | fluctuation state of the connection pipe part in the suction inlet of the vacuum cleaner of FIG. It is a top view which shows equivalently the internal structure of the suction inlet of the vacuum cleaner shown in FIG. It is a side view which shows the internal structure of the suction inlet shown in FIG. FIG. 10 is a view corresponding to FIG. 9 showing a second embodiment of the electric vacuum cleaner of the present invention. FIG. 12 is a diagram corresponding to FIG. 10 of the second embodiment shown in FIG. 11. It is FIG. 11 corresponding view which shows 3rd Embodiment of the vacuum cleaner of this invention.

(First embodiment)
FIG. 1 is an external perspective view showing a first embodiment of the electric vacuum cleaner of the present invention, and FIG. 2 is an explanatory diagram of the internal configuration of the electric vacuum cleaner shown in FIG.

<Overall configuration of vacuum cleaner>
As shown in FIG. 1, the vacuum cleaner 1 includes a cleaner body 2, a suction port body 40, and a connection pipe (extension pipe) 4 that hermetically connects the cleaner body 2 to the suction port body 40. .

  The vacuum cleaner body 2 includes a handle 5 held by the operator, an operation unit 6 provided on the handle 5 and having a start / stop switch, and a connection unit 7 that receives the base end of the connection pipe 4 and is detachably connected. Prepare.

At the tip of the connecting pipe 4, there is provided a connecting portion 9 that receives the connecting pipe portion 42 of the suction port body 40 and removably connects it.
Further, the suction port body 40 includes a connection shaft portion 42 x that can swing the connection pipe portion 42 with respect to the suction port body 40 in an angle range of 90 degrees.

  As shown in FIG. 2, the cleaner body 2 includes a dust collection chamber 11 that is detachably installed, a dust collection filter 12 that is provided on the downstream side of the dust collection chamber 11, an electric blower 13, and a dust collection filter 12. And an air flow path 14 that connects the electric blower 13, an exhaust flow path 37 provided downstream of the electric blower 13, and a flow path 39 that connects the connection portion 7 and the dust collection chamber 11.

  A known cyclone type can be suitably used for the dust collection chamber 11. Moreover, the battery 17 mentioned later is loaded in the cleaner main body 2 so that replacement | exchange is possible.

  The vacuum cleaner 1 shown to FIG. 1, FIG. 2 shows the state which is independent on the floor surface F. FIG. In other words, the angle formed between the suction port body 40 and the connecting pipe 4 is slightly smaller than 90 degrees, and the center of gravity of the cleaner body 2 is in a state of equilibrium so that the vacuum cleaner 1 can stand on the floor surface F.

<Configuration of suction port>
3 is a perspective view showing a suction port body of the vacuum cleaner of FIG. 1, FIG. 4 is a bottom view showing the suction port body of the vacuum cleaner of FIG. 1, and FIG. 5 is a view of the vacuum cleaner of FIG. It is left sectional drawing which shows a suction inlet. 6 is a perspective view showing a driving roller unit in the suction port body of the vacuum cleaner of FIG. 1, and FIG. 7 is an exploded view of the suction port body of the vacuum cleaner of FIG. Moreover, FIG. 8 is explanatory drawing which shows the rocking | fluctuation state of the connection pipe part in the suction inlet of the vacuum cleaner of FIG. 1, (A) shows the lowest state, (B) shows the highest state.

The suction port body 40 is swingable about a left and right axis around the suction port body 41 having a bottom surface provided with a suction port 41a ₁ extending in the left-right direction (arrow A1 direction) and the rear portion of the suction port body 41. A connected connection pipe portion 42; a rotary brush 43 provided at the suction port 41a ₁ of the suction port main body 41 so as to be rotatable about a left-right axis; and a rotary brush motor 44 for driving the rotary brush 43 to rotate. , A drive roller unit 45 provided on the bottom surface side of the suction inlet body 41, a posture detection switch 46, and a lifting detection switch 47.

Suction port body 40 is provided with a lower case 41a having a suction port 41a _1, and an upper case 41b, the front case 41c, a bumper 41d, and cylindrical receiving portions 41e, and a rear case 41f.

Lower case 41a is a suction port 41a and the first space above the opening _{shape 1} of the rotary brush 43 upwardly rotatably accommodated, lifting detection switch 47 and the rotary brush motor 44 is disposed behind the first space A second space having an upper opening shape for storing the space, a third space having a lower opening shape for storing the driving roller unit 45 disposed behind the second space, and a rear space of the third space or the second space. A hole 41a ₂ is formed in the second space. The hole 41a ₂ exposes a part of the lifting detection switch 47 to the outside downward.

The upper case 41b is a component that covers the second space and the third space of the lower case 41a. The rear end portion restricts the rotation of the connection pipe portion 42 that is swung to a substantially vertical state in the twisting direction. A restricting piece 41b ₁ is provided.

The front case 41c is a part that covers the first space of the lower case 41a, and is a part to which the bumper 41d is attached.
In FIG. 7, reference numeral 41 cx denotes a stopper piece that is detachably attached between the left and right rear end portions of the front case and the left and right front end portions of the upper case 41 b, and the lower case is obtained by removing each stopper piece 41 cx. The upper case 41b and the front case 41c can be detached from 41a.

The lifting detection switch 47 includes a swing lever portion having a wheel, a switch body that supports the swing lever portion so as to be swingable, and a torsion coil spring that biases the swing lever portion downward, and includes a lower case. 41a switch body is connected to the housing circuit boards 48, the wheels of the swing lever portion is biased to expose the holes 41a ₂ to the outside downward. The lifting detection switch 47 switches the motor to drive when the suction port body 40 is on the floor surface F, and stops driving the motor when the suction port body 40 is lifted from the floor surface F. The “motor” referred to here includes the rotating brush motor 44 and a driving roller motor 45b described later provided in the driving roller unit 45.

  The rotating brush 43 has a grooved pulley on one end thereof, and a grooved pulley is fixed to the output shaft of the rotating brush motor 44, and a grooved belt is stretched between these grooved pulleys. As a result, the rotational force of the rotary brush motor 44 is transmitted to the rotary brush 43.

  The rear case 41f has an arcuate portion that fits with the peripheral edge of the third space of the lower case 41a so as to surround the drive roller unit 45 from the rear to the left and right, and a lower portion that is connected to the arcuate portion. The case 41a has a fan-shaped portion that fits with the peripheral portion of the fourth space, and a bottom opening (bottom surface) for the pair of left and right rear rollers 49 to be rotatably mounted around the left-right axis. Mounting recesses are provided.

Between the left and right mounting recess in the rear case 41f with the circular hole is formed, the cylindrical member 41g is rear case 41f having a convex curved surface portion 41g ₁ on the lower end so as to protrude from the circular hole to the outside downward It is provided above.
The left and right positions and lower case 41a of the arc-shaped part of the rear case 41f on the left and right position of the third space, left and right to be described later of the driving roller unit 45 the shaft portion 45d ₁₁ a rotatably supported to a semi-circular Ribs 41h are provided.

The receiving portion 41e is a component that holds the connection pipe portion 42 so as to be swingable about the axis in the left-right direction, and includes a lower member 41e ₁ and an upper member 41e ₂ that can be divided into two parts.
The lower member 41e ₁ has a circular vent hole portion 41e ₁₁ at the front end and an attachment portion 41e ₁₂ for attaching the posture detection switch 46 to the left end portion of the semi-cylindrical portion.

The upper member 41e ₂ is formed with a notch 41e ₂₁ at the rear end so that the connection pipe portion 42 can swing to a substantially vertical state.
Circular outer periphery of the lower member 41e ₁ and the upper member 41e ₂ and vents receiving portion 41e of the assembled unit 41e ₁₁ is fitted into the semi-circular rib 41e ₁₃ respectively provided on the lower case 41a and upper case 41b It is attached so as to be rotatable around the axial center in the front-rear direction.

<Configuration of connection pipe section>
The connection pipe portion 42 includes a cylindrical main body portion 42a having a ventilation path, and an upper cover portion 42b attached to the main body portion 42a, and the receiving portion 41e of the suction inlet main body 41 and the axis center in the left-right direction. And a connecting shaft portion 42x that is swingably connected to the base end side (root side).

  In the connection shaft portion 42x, the surface on the swinging direction side (arrow B1 direction side) of the connection pipe portion 42, that is, a part of the outer surface of the main body portion 42a and a part of the outer surface of the upper cover portion 42b are convex curved surfaces. It is connected to the receiving portion 41e of the suction port body 41 so as to be swingable around the axis in the left-right direction (in the direction of arrow B1) (see FIG. 2).

Lower cover portion 42a has a protruding switch contact portion 42a ₁ on the left side surface of the proximal end portion. The switch abutting portion 42a ₁ abuts on the lever 46a of the attitude detection switch 46 attached to the receiving portion 41e when the connecting shaft portion 42x swings to switch the motor from driving to stopping. The “motor” referred to here includes the rotating brush motor 44 and a driving roller motor, which will be described later, provided in the driving roller unit 45.

The upper cover portion 42b has an inclined surface adjacent to the convex curved surface and a constricted portion 42b ₁ between the inclined surface and the convex curved surface, and the connection pipe portion 42 is in an inclined state (FIG. 8A). )) To the vertical state (FIG. 8B), the constricted part 42b ₁ is stopped against the inner part of the notch 41e ₂₁ of the receiving part 41e, and further swinging is restricted. The “vertical state” of the connection pipe portion 42 means a state that is substantially perpendicular to the floor surface F.

<About the drive roller unit>
9 is a perspective view showing a drive roller in the drive roller unit of FIG. 6, FIG. 10 is a front view of the drive roller of FIG. 9, and FIG. 11 is a sectional view of the drive roller of FIG.

Drive roller unit 45 includes a drive roller 45a, the drive roller motor 45b, the rotational force transmission mechanism having a grooved belt 45 c ₁ and will have a casing 45d for accommodating them, and the suction port body 40 driving roller unit 45 Is attached to the suction inlet main body 41 so as to be urged toward the floor surface F by an urging member (not shown) provided therebetween.

Casing 45d includes a first casing 45d _1, comprising a second casing 45d ₂ assembled to the first upper casing 45d _1, and a third casing 45d ₃ assembled to the first lower casing 45d _1.

The first casing 45d ₁ has a shaft portion 45d ₁₁ on the left and right side surfaces.
The second casing 45d ₂ has a short cylindrical recess 45d ₂₁ into which the lower end portion of the coil spring as the biasing member is fitted at the left and right positions on the upper surface.
The third casing 45d ₃ has an opening 45d ₃₁ for projecting the driving roller 45a to the floor surface F side.

Drive roller motor 45b is accommodated in the space between the first casing 45d ₁ and second casing 45d _2, the driving roller 45a is in the horizontal direction in the space between the first casing 45d ₁ and the third casing 45d ₃ It is stored so that it can rotate around its axis.

The driving roller 45a includes a rotating member 45a ₁ connected to the rotational force transmission mechanism, a cylindrical roller member 45a ₂ provided on the outer peripheral side of the rotating member, and between the rotating member 45a ₁ and the roller member 45a _2. And a roller fixing member 45a ₃ provided on the surface.

The cylindrical roller fixing member 45a ₃ includes inner flange portions 45a ₃₁ provided at both end portions in the axial direction and a pair of annular convex portions 45a ₃₂ provided on the outer peripheral surface at predetermined intervals in the axial direction. It has a halved body 45a _{33 that} can be divided into two.
The cylindrical roller member 45a ₂ is fitted between the pair of annular convex portions 45a ₃₂ of the roller fixing member 45a ₃ .

The rotating member 45a ₁ includes a main body 45a ₁₁ having a pair of outer flange portions 45a ₁₁₁ provided on the outer peripheral surface at predetermined intervals in the axial direction, and pins and bearings 45a at both axial ends of the main body 45a ₁₁ . _And a support block 45a ₁₃ which is rotatably mounted via ₁₂ .

Between the one end side of the outer flange 45a ₁₁₁ and support blocks 45a ₁₃ of the main body portion 45a _11, grooved pulleys 45a ₁₁₂ constituting the rotational force transmission mechanism are integrally molded. Further, the inner flange portions 45a ₃₁ of the pair of halves 45a ₃₃ fitted between the pair of outer flange portions 45a ₁₁₁ are fitted inside the pair of outer flange portions 45a _{111 at} the outer peripheral portion of the main body portion 45a _11. A recessed circumferential groove 45a ₁₁₃ is formed. In addition, one or more cuts are formed in a part of the inner flange portion 45a ₃₁ of the half body 45a ₃₃ , and one or more protrusions are provided in a part of the concave circumferential groove 45a ₁₁₃ , When the protrusion engages with the notch, the rotating member 45a ₁ and the roller fixing member 45a ₃ are mechanically coupled and rotate integrally.

Examples of the material of the rotating member 45a ₁ include resins such as POM (polyacetal), PET (polyethylene terephthalate), and PTFE (tetrafluoroethylene). In this embodiment, POM is used.
The material of the roller fixing member 45a ₃ is a resin having a lower organic solvent resistance than the material of the rotating member 45a ₁ , for example, ABS (styrene / butadiene / acrylonitrile copolymer), AS (styrene / acrylonitrile copolymer). ), PS (polystyrene), and the like, and ABS is used in this embodiment.

Examples of the material of the roller member 45a ₂ include rubbers such as silicone rubber, fluorine rubber, and chlorosulfonated polyethylene rubber. In the present embodiment, silicone rubber is used.
The roller member 45a ₂ may be bonded to the roller fixing member 45a ₃ using an adhesive, or may be directly covered without using an adhesive. In the case of using an adhesive, any adhesive may be used as long as it can bond the roller member 45a ₂ and the roller fixing member 45a ₃ , for example, an acrylic resin, vinyl chloride resin, chloroprene rubber, nitrile rubber, or the like. Is mentioned.

The rotational force transmission mechanism includes a grooved pulley 45b ₁ fixed to the output shaft of the drive roller motor 45b, a grooved pulley 45a ₁₁₂ of the drive roller 45a, and a groove between these grooved pulleys 45b ₁ and 45a _112. And a grooved belt 45c ₁ (see FIG. 7).

<Positional relationship of each part in suction port>
Next, the positional relationship of each component including the drive roller 45a in the suction port body 40 will be described. Hereinafter, as shown in FIG. 5, the axis of the drive roller 45 a is the first axis P ₁ , the axis of the connection shaft part 42 x of the connection pipe part 42 is the second axis P ₂ , and the axis of the rotary brush 43 is the axis. The third axis P ₃ , the axis of the pair of rear rollers 49 as the fourth axis P ₄ , and the axis of the drive roller motor 45 b as the fifth axis P _{5 will} be described.

In the suction port body 40, as shown in FIG. 4, the drive roller 45 a is disposed at an intermediate position in the left-right direction (arrow A <b> 1 direction) in the suction port body 41. Further, as shown in FIG. 5, the first axis P ₁ is disposed between the second axis P ₂ and the suction port 41a ₁ or the third axis P ₃ . By disposing one drive roller 45a at such a position, it is possible to improve the turning operability of the suction port body 40 while suppressing the load applied to the rotary brush motor 44.

Further, the fourth axis P ₄ is disposed at a rear position with respect to the second axis P ₂ . By arranging the pair of left and right rear rollers 49 in such a position, it is effective to make the vacuum cleaner 100 stand up substantially vertically by supporting the driving roller 45a and the pair of left and right rear rollers 49 at three points. (Refer to FIG. 2) Further, the rear roller 49 can suppress the rear portion of the suction port body 40 from coming into contact with the flooring floor F and being damaged.

The shaft portion 45d ₁₁ of the drive roller unit 45 is disposed on substantially the same axis as the fifth axis P5 of the rear of the drive roller motor 45b than the first axis P ₁ of the driving roller 45a, with and energizing member is disposed forwardly of the shaft portion 45d _11. Therefore, it is possible to drive roller unit 45 to the shaft portion 45d ₁₁ as a fulcrum becomes swingable in a vertical direction (arrow C1), the load adjustment of the vertical movement of the drive roller 45a by the biasing member. In FIG. 6, so that the coil spring as a biasing member may be provided two, but the driving roller unit 45 are two recesses 45d ₂₁ has described the case provided, the number of recesses 45d ₂₁ 3 Further, the number of coil springs actually provided may be changed according to the load to be applied to the drive roller 45a.

<Cooling mechanism of suction port>
FIG. 9 and FIG. 10 are a plan view and a side view for explaining the internal structure of the suction port body 40 equivalently. Hereinafter, the cooling mechanism of the suction inlet 40 will be described with reference to FIGS. 9 and 10.

  The suction port body 40 has a housing formed of the lower case 41a, the upper case 41b, the front case 41c, the rear case 41f, and the like, as shown in FIGS. 9 and 10. The top plate 24, the bottom plate 25, and the side plate 26 provided along the outer periphery between them are equivalently provided.

The suction port body 40 includes a rotary brush 43 provided at the suction port 41a ₁ and rotatably supported at both ends of a rotary shaft, and a rotary brush motor (hereinafter referred to as a first electric motor) installed on the bottom plate 25 and driving the rotary brush 43. 44), a grooved pulley 20 provided on the rotating shaft of the rotating brush 43, a grooved pulley 22 provided on the output shaft of the first electric motor 44, and a grooved belt for connecting the grooved pulleys 20 and 22. 23.

A pair of rear rollers 49 that movably support the suction port body 40 are provided behind the bottom plate 25, and a part of the bottom plate 25 is exposed downward from the bottom plate 25 at the center of the bottom plate 25 (FIG. 2). A driving roller (hereinafter referred to as a self-running roller) 45a rotatably supported so as to be in contact with the motor, a driving roller motor (hereinafter referred to as a second electric motor) 45b installed on the bottom plate 25 and driving the self-running roller 45a, A grooved pulley 45a ₁₁₂ provided at one end (left end) of the rotating shaft of the self-running roller 45a, a grooved pulley 45b ₁ provided at the output shaft of the second electric motor 45b, and grooved pulleys 45b ₁ and 45a ₁₁₂ are provided. A grooved belt 45c _{1 to} be connected is provided.

In this embodiment, in the suction port body 40 (FIGS. 9 and 10), the suction port 41a ₁ and the connection pipe portion 42 are connected by the suction flow channel 16, and the suction flow channel 16 is a self-propelled roller. 45a, the second electric motor 45b, and the top plate 24 are provided so as to pass in a straight line when viewed from above.

  As shown in FIG. 9, the side plate 26 includes a first opening 32 and a second opening 33 for sucking outside air, and the suction channel 16 includes a first suction port 34 and a second suction port 35. Accordingly, cooling air passages A and B indicated by arrows are formed between the first opening 32 and the first suction port 34 and between the second opening 33 and the second suction port 34, respectively.

  The cooling air passages A and B are used to cool the first electric motor 44 and the second electric motor 45b, respectively. The first opening 32 and the second opening 33 preferably each include a dustproof filter.

<Operation of vacuum cleaner>
Operation | movement of the vacuum cleaner 1 in such a structure is demonstrated.
First, as shown in FIGS. 1 and 2, the operator grasps the handle 5 of the vacuum cleaner 1 standing on the floor F from the rear of the suction port body 3 and pulls the cleaner body 2 toward the front to suck the suction port body. 3 and the fluid connection pipe 4 are set to a desired angle larger than 90 degrees.

  Next, when the start switch of the operation unit 6 is operated, electric power is supplied from the battery 17 (FIG. 2) to the electric blower 13, the first electric motor 44, and the second electric motor 45b to drive them.

As a result, the self-propelled roller 45a is driven so that the suction port body 40 is self-propelled on the floor surface F and the operator follows the suction port body 40 while holding the vacuum cleaner body 2, thereby rotating the rotary brush 43. Dust on the floor surface is collected and sucked into the dust collecting chamber 11 through the suction channel 16, the connecting pipe 4 and the channel 39 together with air from the suction port 41 a ₁ as shown in FIG. 2.

  Air containing dust sucked into the dust collection chamber 11 is filtered by the dust collection filter 12, and only clean air is discharged from the electric blower 13 through the flow path 14 to the outside through the exhaust flow path 37.

  On the other hand, the dust collected by the dust collection filter 12 falls due to gravity and is collected at the bottom of the dust collection chamber 11. When the dust collection amount in the dust collection chamber 11 reaches the allowable maximum amount, the operator removes the dust collection chamber 11 from the cleaner body 2 and discards the accumulated dust. The fine dust that does not fall from the dust collection filter 12 and adheres to the dust collection filter 12 is removed from the dust collection filter 12 by washing or the like.

When finishing the cleaning work, the operator operates the stop switch of the operation unit 6. Thereby, the supply of electric power from the battery 17 to the electric blower 13, the first and second electric motors 44, 45b is stopped, the self-running operation in the suction port body 40, the rotation operation of the rotary brush 43, and the suction of the suction port 41a ₁ Operation stops. Then, an operator returns the vacuum cleaner 1 to the attitude | position shown in FIG. 1 and FIG. 2, makes it stand on the bottom face F again, and complete | finishes an operation | work.

  When the suction port body 40 is lifted from the floor surface F during the cleaning operation, the lifting detection switch 47 that has been pushed into the suction port body 41 protrudes to the outside. If it will be in this state, the drive of the 1st and 2nd electric motors 44 and 45b will stop, and the rotation of the rotating brush 43 and the running roller 45a will stop.

  Moreover, also when an operator leaves | separates temporarily during cleaning, as shown to FIG. 1 and 2, the vacuum cleaner 1 is made self-supporting. At this time, the connection pipe portion 42 of the suction port body 40 is in a vertical state in which it swings upward by a predetermined angle or more as shown in FIG. 8B.

In this state, the switch contact portion 42a ₁ (FIG. 7) provided on the connection shaft portion 42x of the connection pipe portion 42 pushes down the lever 46a of the posture detection switch 46, whereby the posture detection switch 46 is moved to the first and second positions. 2 Stop driving the electric motors 44 and 45b.

  Thereby, even if a user does not operate the operation part 6, since the rotation brush 43 and the driving | running | working roller 45a are temporarily stopped, the suction inlet body 40 self-propels and the vacuum cleaner 100 of a self-supporting state balances. It is possible to prevent a problem that it collapses and falls and breaks.

In this embodiment, the first motor 44 and the second motor 45b are cooled as follows.
That is, when the operation of the electric vacuum cleaner 1 is started as described above and the electric blower 13 is driven, the air containing dust from the suction port 41a ₁ is connected to the connecting pipe portion via the suction passage 16 as shown in FIG. 42 is aspirated.

  Along with this, outside air flows through the air passage A extending from the first opening 32 of the side plate 26 shown in FIG. 9 to the first suction port 34 of the suction passage 16 and continuously contacts the first electric motor 44. Thereby, the first electric motor 44 is cooled.

Similarly, due to the suction action of the electric blower 13, the outside air flows through the air passage B extending from the second opening 33 of the side plate 26 shown in FIG. 9 to the second suction port 35 of the suction passage 16, and the second electric motor 45b. In continuous contact. Thereby, the second electric motor 45b is cooled.
Therefore, the first motor 44 and the second motor 45b are reduced in size and weight without changing the output capacity.

(Second Embodiment)
FIG. 11 is a diagram corresponding to FIG. 9 showing the second embodiment of the electric vacuum cleaner 1, and FIG. 12 is a diagram corresponding to FIG. 12 showing the second embodiment.

In this embodiment, the suction flow path 16 of the suction port body 40 of the first embodiment, the connecting pipe portion 42 has been replaced with the suction channel C connected to along the bottom plate 25 from the suction port 41a _1, the first The suction port 34 is replaced with a first suction port 34a, and the second suction port 35 is replaced with a second suction port 35a. Other configurations and operations are the same as those of the first embodiment. In this embodiment, the same effect as in the first embodiment can be obtained.

  Further, according to this embodiment, as shown in FIG. 12, the suction flow path C is provided low along the bottom plate 25 between the self-running roller 45a and the second electric motor 45b and the side plate 26. The height of the top plate 24 of the mouth body 40 can be reduced, and the suction mouth body 40 itself can be reduced in size.

(Third embodiment)
FIG. 13 is a view corresponding to FIG. 9 showing a third embodiment of the vacuum cleaner 1.

In this embodiment, the suction flow path 16 of the suction port body 40 of the first embodiment, along the bottom plate 25 was replaced with the connected suction channel D to the connecting pipe portion 42 from the suction port 41a _1, the first The suction port 34 and the second suction port 35 are merged to form the third suction port 38, and the ventilation path A and the ventilation path B are merged to form the ventilation path E.

  In this embodiment, the 2nd opening 33 (Drawing 3) of a 1st embodiment is closed, self-propelled roller 45a and the 2nd electric motor 45b are arranged in the reverse direction, and the outside air which flows in from the 1st opening 32 is used in common. Thus, the first motor 44 and the second motor 45b are cooled at the same time.

  Other configurations and operations are the same as those of the first embodiment. In this embodiment, the same effect as that of the first embodiment can be obtained, and the suction passage port is provided low along the bottom plate 25. Therefore, the suction port body 3 is reduced in height and reduced in size, and its workability is improved. improves.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner, 2 Vacuum cleaner main body, 4 Connection pipe, 5 Handle, 6 Operation part, 7 Connection part, 9 Connection part, 11 Dust collection chamber, 12 Dust collection filter, 13 Current blower, 14 Ventilation path, 16 Suction flow Road, 17 battery, 20 grooved pulley, 22 grooved pulley, 23 grooved belt, 24 top plate, 25 bottom plate, 26 side plate, 32 first opening, 33 second opening, 34 first suction port, 35 second suction Mouth, 37 Exhaust flow path, 38 Third suction port, 39 Flow path, 40 Suction port body, 41a ₁ Suction port, 42 Connection pipe section, 42x Connection shaft section, 43 Rotating brush, 44 Rotating brush motor (first motor) ), 45a Drive roller (self-running roller), 45a ₁₁₂ groove pulley, 45b Drive roller motor (second electric motor), 45b ₁ groove pulley, 45c ₁ groove belt, 49 Rear roller, A, B, E Road, C D drawing channel, F floor

Claims (5)

  A vacuum cleaner body with an electric blower for sucking dust and a dust collection chamber for storing sucked dust, a suction port body having a suction port for sucking dust, and a vacuum cleaner body connected to the suction port body A suction channel that connects the suction port and the connection tube, a rotating brush provided in the suction port, a self-propelled roller that runs the suction port body, First and second electric motors for driving the rotating brush and the self-running roller, respectively, and an air passage connected to the suction passage from an opening for sucking outside air formed in a part of the suction port body, A vacuum cleaner characterized in that at least one of the first and second electric motors is brought into contact with outside air passing through the air passage to cool it.   The suction port body includes a top plate, a bottom plate, and a side plate provided along an outer periphery therebetween, and the rotating brush, the first electric motor, the self-propelled roller, and the second electric motor are mounted on the bottom plate. The electric vacuum cleaner according to claim 1.   The said self-propelled roller and the 2nd electric motor are mounted in the center part of the said baseplate, The said suction flow path is provided so that it may pass between the said self-propelled roller and a 2nd electric motor, and a top plate. Electric vacuum cleaner.   The vacuum cleaner according to claim 2, wherein the suction flow path is provided on the bottom plate so as to pass between the self-running roller and the second electric motor and the side plate.   The vacuum cleaner according to claim 4, wherein the ventilation path constitutes a ventilation path that cools both the first and second electric motors.

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