JP2004230031A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction nozzle reducing a load when it is pulled back toward a user and a vacuum cleaner equipped with the suction nozzle. <P>SOLUTION: The suction nozzle 11 has a suction chamber 13 having a suction opening 12 formed at the bottom of the suction nozzle 11 and the corners at both ends of the rear portion of the bottom of the suction nozzle 11 are formed into slopes 11A. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a suction port having a suction chamber having a suction opening on a bottom surface, and a mainly upright type vacuum cleaner having the suction port.
[0002]
[Prior art]
2. Description of the Related Art Upright type vacuum cleaners having a vacuum cleaner body and a suction opening body have been conventionally known (see Patent Document 1).
[0003]
In such a vacuum cleaner, an electric blower provided in the cleaner body sucks dust and air from a suction port body, and the sucked dust and air are sucked into a dust collection chamber of the cleaner body through a communication pipe. Is collected by a dust collection filter provided in a dust collection chamber, air is sucked into the air supply port of the electric blower through the dust collection filter, exhausted from the exhaust port of the electric blower, and exhausted from this exhaust port. The wind is circulated to the suction body through the circulation air passage.
[0004]
[Patent Document 1]
JP-A-2000-197592
[0005]
[Problems to be solved by the invention]
However, in such an upright type vacuum cleaner, the weight of the cleaner body is reduced at the rear part of the suction body, particularly since the cleaner body is provided on the rear part of the suction body. In addition, the rear ends of the bottom surface of the suction port body are angular, so when pulling back the suction port body at the time of cleaning, if the surface to be cleaned is a carpet, etc., the suction port body is inside the carpet of the carpet. There is a problem that the load when pulling back is increased because the state is such that it enters.
[0006]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a suction port body capable of reducing a load when pulled back to a hand, and a vacuum cleaner provided with the suction port body.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, an invention according to claim 1 is a suction port body having a suction chamber having a suction opening on a bottom surface,
The corners of the rear ends of the bottom surface of the suction port body are inclined.
[0008]
Embodiment
Hereinafter, an embodiment of a suction port of a vacuum cleaner according to the present invention will be described with reference to the drawings.
[0009]
In FIG. 1, reference numeral 10 denotes an upright type vacuum cleaner. The vacuum cleaner 10 is provided with a suction opening 11 and a suction wind (not shown) which is provided at the rear of the suction opening 11 so as to be able to rotate back and forth. A support body 40 having a passage and a circulation air passage, a handle 45 provided at an upper end of the support body 40 so as to be rotatable around an axis 44, a cleaner main body 50 attached to the support body 40, and A dust cup 60 and the like are detachably attached to a lower portion of the machine main body 50.
[0010]
The cleaner main body 50 is provided with an electric blower (not shown). The electric blower sucks dust together with air from the suction opening body 11, and the sucked air passes through a suction air passage of the support body 40 to a dust cup. The dust and air are introduced into the dust cup 60, and the dust and the air are separated by the swirling flow generated in the dust cup 60. The separated dust collects in the dust cup 60, and only the air is sucked into the suction port of the electric blower of the cleaner main body 50. Will be done. The air sucked by the electric blower is exhausted from an exhaust port (not shown) of the electric blower, and the exhaust air exhausted from this exhaust port is circulated to the suction port body 11 through the exhaust air passage of the support body 40. .
[0011]
As shown in FIGS. 2 and 3, the suction port body 11 includes a suction chamber 13 having a suction opening 12 for sucking dust on a bottom surface, and a rotary cleaning body 14 rotatably provided in the suction chamber 13. Suction port main body 11H, suction air path section 15 provided at the rear of suction port main body 11H and communicating with suction chamber 13, and connection pipe provided at the rear of suction air path section 15 so as to be rotatable in the front-rear direction. 16 and so on. The connection pipe 16 has a double pipe structure, and a suction pipe 16A is formed inside, and the outside of the suction pipe 16A is an exhaust pipe 16B. Further, the connection pipe 16 is connected to the support body 40, and the suction air passage of the support body 40 communicates with the suction pipe portion 16A, and the exhaust air passage of the support body 40 communicates with the exhaust pipe portion 16B.
[0012]
An exhaust air passage 17 is formed outside the suction air passage 15, and a rear wheel R is provided in the exhaust air passage 17.
[0013]
A circuit chamber 18 is formed on the left side behind the suction chamber 13 and a motor chamber 19 is formed on the right side of the suction port main body 11H. The circuit chamber 18 and the motor chamber 19 communicate with the exhaust air passage 17, and a plurality of outlet holes 20 a for circulating the exhaust air to the suction chamber 13 are formed in a partition wall 20 that divides the motor chamber 19 and the suction chamber 13. ing. In addition, inclined surfaces 11A are formed at both ends of the rear portion of the bottom surface of the suction port main body 11H as shown in FIGS. Due to the inclined surface 11A, an inclined surface 11a is formed in the circuit room 18 such that the height increases toward the corner, and the height decreases (approaches the surface to be cleaned) as the distance from the corner increases. The left end of the circuit chamber 18 is a guide air passage 18A for flowing exhaust air in a direction indicated by an arrow Q in FIG. 4, and the guide air passage 18A includes an inclined surface 11a.
[0014]
On the other hand, a motor M is attached to the motor chamber 19 as shown in FIG. 2, and a circuit board (not shown) provided with a control circuit (not shown) for controlling the motor M is provided in the circuit chamber 18. ing. A drive gear 21 is mounted on a drive shaft Ma of the motor M.
[0015]
The suction port body 11 is provided with a bearing chamber 22 on the left side of the suction chamber 13 and a bearing chamber 23 on the right side of the suction chamber 13.
[0016]
As shown in FIG. 5, the bearing chamber 22 is partitioned from the suction chamber 13 by two partition walls 24 and 25. Shaft holes 24A and 25A are formed in the partition walls 24 and 25. The bearing chamber 22 is provided with a bearing 26 to which a shaft holding member 34 described later is attached. A communication hole 27 </ b> A that connects the circuit room 18 and the bearing room 22 is formed in a partition wall 27 that divides the circuit room 18 and the bearing room 22. A filter F is attached to the communication hole 27A.
[0017]
The bearing chamber 23 is partitioned from the suction chamber 13 by partition walls 28 and 29 similarly to the bearing chamber 22, and the partition walls 28 and 29 are formed with shaft holes 28A and 29A. In the bearing chamber 23, a bearing portion 30 for mounting a shaft holding member 35 described later is formed.
[0018]
The rotary cleaning body 14 has a rotary shaft 14A extending in the left-right direction, a blade 14B and a brush 14C spirally formed on the rotary shaft 14A. A cylindrical shaft cover 31 is attached to one end (left end) of the rotating shaft 14A, and a cylindrical shaft cover 32 and a driven gear 33 are attached to the other end of the rotating shaft 14A. One end of the rotating shaft 14A penetrates the shaft cover 31, and a shaft holding member 34 is rotatably attached to one end of the penetrating rotating shaft 14A.
[0019]
The other end of the rotating shaft 14A penetrates the shaft cover 32 and the driven gear 33, and a shaft holding member 35 is rotatably attached to the other end of the penetrating rotating shaft 14A. The rotating shaft 14A is rotatably held by the shaft holding members 34 and 35, and the shaft holding members 34 and 35 are attached to the bearing portions 26 and 30 of the bearing chambers 22 and 23. The bearings 26 and 30 rotatably hold the rotary shaft 14A via shaft holding members 34 and 35. A belt B is wound around the driven gear 33 and the driving gear 21, and the rotating cleaning body 14 is rotated by the driving of the motor M.
[0020]
As shown in FIG. 5, two flanges 31Fa and 31Fb are formed on the shaft cover 31, and the shaft cover 31 penetrates the shaft holes 24A and 25A of the partition walls 24 and 25. The flanges 31Fa and 31Fb of the shaft cover 31 and the partition walls 24 and 25 are alternately arranged at a predetermined interval. Since the diameter of the shaft cover 31 is set smaller than the diameter of the shaft holes 24A and 25A, predetermined gaps S and S are formed between the shaft cover 31 and the shaft holes 24A and 25A. , S, the exhaust air introduced into the bearing chamber 22 is sucked into the suction chamber 13 and circulated.
[0021]
The shaft cover 32 is formed with two flanges 32Fa and 32Fb, and the shaft cover 31 penetrates through the shaft holes 28A and 29A of the partition walls 28 and 29. The flanges 32Fa and 32Fb of the shaft cover 32 and the partition walls 28 and 29 are alternately arranged. The gap formed between the shaft cover 32 and the shaft holes 28A, 29A is set small.
[0022]
Next, the operation of the vacuum cleaner 10 configured as described above will be described.
[0023]
When an operation switch (not shown) is operated, the electric blower is driven and the motor M is driven. The rotation of the rotary cleaning body 14 is driven by the driving of the motor M, and the dust attached to the carpet is scraped up by the rotation of the rotary cleaning body 14.
[0024]
On the other hand, dust and the like scooped up by the rotary cleaning body 14 from the suction opening 12 of the suction opening body 11 by driving of the electric blower are sucked into the suction chamber 13 together with air, and the sucked dust and air are sucked into the suction air passage 15. Is introduced into the dust cup 60 through the suction pipe 16A of the connection pipe 16 and the suction air passage of the support body 40. The air introduced into the dust cup 60 becomes a swirling flow, and the dust and the air are separated by the swirling flow. The separated dust collects in the dust cup 60, and only the air is provided at the upper opening of the dust cup 60. The air is sucked into the suction port of the electric blower of the cleaner main body 50 via a filter (not shown).
[0025]
The air sucked by the electric blower is exhausted from an exhaust port of the electric blower. The air is introduced into the circuit room 18 and the motor room 19 through the air passage 17. The exhaust air introduced into the motor chamber 19 is sucked into the suction chamber 13 from the outlet 20 a of the partition wall 20 and circulates.
[0026]
On the other hand, the exhaust air introduced into the circuit chamber 18 is introduced into the bearing chamber 22 through the communication hole 27A of the partition wall 27, and the exhaust air introduced into the bearing chamber 22 passes through the shaft cover 31 and the partition walls 24 and 25. The air is sucked into the suction chamber 13 through the gaps S between the shaft holes 24A and 25A.
[0027]
By the way, the rotating cleaning body 14 sucks dust by rotating counterclockwise in FIG. 4 (because the spiral direction of the blade 14B and the brush 14C is counterclockwise viewed from the left side in FIG. 2). The exhaust air is blown out from the gaps S, S between the shaft cover 31 and the shaft holes 24A, 25A of the partition walls 24, 25. It is prevented that thread scraps or the like enter and become entangled with one end of the shaft cover 31 or the rotating shaft 14A.
[0028]
The exhaust air introduced into the circuit chamber 18 cools a thermistor (not shown) provided on the circuit board, flows in the direction indicated by arrow Q in FIG. 5, and is introduced into the bearing chamber 22. The exhaust air is guided by the inclined surface 11a of the air passage 18A and flows to the bearing chamber 22 efficiently. For this reason, even if it is a slight exhaust air for cooling the thermistor, the exhaust air can be efficiently blown out from the gaps S, S, and the entanglement of the yarn waste can be reliably prevented.
[0029]
The suction port body 11 is moved back and forth during cleaning, but when the suction port body 11 is moved backward, that is, when the suction port body 11 is pulled back to the hand, the suction port body 11H is inclined at both ends at the rear of the bottom surface of the suction port body 11H. By forming the surface 11A, the suction port main body 11A is prevented from entering the fluff of the carpet at the time of the retraction operation, so that the load at the time of the retraction operation is reduced, and the operation is very easy. Become.
[0030]
Further, when the direction of the suction port body 11 is changed while the floor surface is being cleaned, it is possible to prevent the rear end of the bottom surface of the suction port body 11 from contacting the floor and damaging the floor.
[0031]
In the above embodiment, the inclined surface 11A is provided on the suction port main body 11H, but a large R may be provided on the corner. Further, although the suction port of the upright type vacuum cleaner has been described, the suction port of the canister type vacuum cleaner may be used, and the suction port may not be a circulation type suction port.
[0032]
【The invention's effect】
As described above, according to the present invention, the load at the time of the pull-back operation of the suction port body is reduced, and the operation becomes very easy.
[Brief description of the drawings]
FIG. 1 is a perspective view showing the appearance of an upright type vacuum cleaner according to the present invention.
FIG. 2 is a plan sectional view showing a configuration of a suction port body of the electric vacuum cleaner shown in FIG.
FIG. 3 is a bottom view of the suction port body of FIG. 2;
FIG. 4 is a cross-sectional view of the suction port main body shown in FIG.
FIG. 5 is a partially enlarged view in which a part of the suction port body of FIG. 2 is enlarged.
[Explanation of symbols]
11 Suction port body 11A Inclined surface 12 Suction opening 13 Suction chamber

Claims (3)

A suction port body having a suction chamber having a suction opening on a bottom surface,
An inlet body characterized in that inclined surfaces are provided at both ends at the rear of the bottom surface of the inlet body. A rotary cleaning body rotatably provided in the suction chamber,
A bearing chamber provided with a bearing portion for holding a rotating shaft of the rotating cleaning body,
A partition wall that separates the bearing chamber and the suction chamber and through which the rotating shaft passes;
A guide air path for flowing exhaust air returned from the cleaner body along the inside of a rear wall of the suction opening body and flowing to the bearing chamber through the inclined surface;
2. The suction port body according to claim 1, wherein the exhaust air flowing into the bearing chamber is sucked into the suction chamber through a gap formed between the partition wall and a rotation shaft. 3. An upright type vacuum cleaner provided with the suction opening according to claim 1 or 2.

Images