JP3871517B2 - Suction port and circulation vacuum cleaner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a suction port connected to a vacuum cleaner and a circulation type vacuum cleaner provided with the suction port.
[0002]
[Prior art]
In conventional vacuum cleaners, dust on the surface to be cleaned sucked into the suction chamber of the suction port body by the negative suction pressure of the electric blower provided in the vacuum cleaner body is extended in the extension pipe (extension pipe) and the dust collecting hose. The air is sucked into the dust collection chamber in the main body of the vacuum cleaner through the intake passage, and the sucked dust is collected by the dust collection filter in the dust collection chamber, while the exhaust air from the electric blower is passed through the circulation air passage. It is considered that a circulation type is used in which the exhaust air is not exhausted outside by being circulated through the suction port body.
[0003]
In the suction port used in such a circulation type vacuum cleaner, air pressure generated by the intake of outside air by the negative pressure action in the suction chamber accompanying the driving of the electric blower or circulation through the entire vacuum cleaner. There is also known one provided with a rotary cleaning body that rotates by attachment.
[0004]
This rotary cleaning body is mainly used when the surface of a carpet or futon is used as the surface to be cleaned, by applying a striking or wiping action to the surface to be cleaned that has entered the suction chamber from the suction opening due to its surface characteristics. In order to efficiently suck dust and the like on the surface to be cleaned, a cleaning member (including an elastic body such as rubber, a cloth body, a brush body, etc.) protruding radially or spirally from the rotating shaft is provided.
[0005]
[Problems to be solved by the invention]
By the way, in such a suction port body, the cleaning member provided in the rotary cleaning body is cleaned by a beating action (mainly elastic body or cloth body) or a wiping action (mainly brush body) against the surface to be cleaned. Since it facilitates the inhalation of dust on the surface, considering the rotational speed of the rotary cleaning body itself and the moving speed of the suction port body, the dust and the like located on the far side of the carpet or futon will be lifted up momentarily. It was difficult.
[0006]
Therefore, the present invention can not only easily lift dust and the like located on the back side of the surface to be cleaned, but also can efficiently suck in the dust and the like that has been lifted. It is an object of the present invention to provide a suction port body and a vacuum cleaner that can extend the working time upward and deepen it, and can further improve the efficiency of sucking dust on the surface to be cleaned.
[0007]
[Means for Solving the Problems]
In order to achieve this object, the suction port according to claim 1 is provided in communication with the suction opening provided in the bottom surface of the main body, the suction chamber provided in the upper part of the suction opening, and the suction chamber. Intake port body provided with an intake air passage inlet and a rotary cleaning body provided in the suction chamber and rotatable about an axis,
The rotary cleaning body includes an air guide path formed in the shaft so that air generated in accordance with a negative pressure action in the suction chamber is guided, and a plurality of cleanings protruding from the shaft and bent at a distal end side. And a jet air passage that is formed in each of the cleaning members and communicates with the air guide passage so as to inject air from an air outlet formed at the tip of each of the cleaning members. To do.
[0008]
The suction port body according to claim 2 is independent of an intake air passage communicated with an intake side of an electric blower provided in a cleaner body and an exhaust air passage communicated with an exhaust side of the electric blower. A suction port used for a circulating vacuum cleaner communicated,
The suction port body includes a suction opening provided in a bottom surface, a suction chamber provided in an upper portion of the suction opening, and an intake air passage inlet provided in communication with the suction air passage. A rotary cleaning body provided in the suction chamber and rotatable about an axis, and a guide air path communicating with the exhaust air path and an end of the shaft,
The rotary cleaning body includes an air guide passage formed on the shaft so as to communicate with the guide air passage, a plurality of cleaning members protruding from the shaft and bent at a distal end side, and the cleaning members. The gist of the present invention is to include an injection air passage that is formed and communicates with the air guide passage so as to inject air from an air outlet formed at the tip of each cleaning member.
[0009]
A gist of a circulation type electric vacuum cleaner according to a third aspect is provided with the suction port body according to the second aspect.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention is applied to a circulation type electric vacuum cleaner and will be described with reference to FIGS.
[0011]
In FIG. 4, the vacuum cleaner 1 includes a vacuum cleaner main body 10, a connection pipe 11 connected to the vacuum cleaner main body 10, a bellows-like flexible hose 12 having one end attached to the connection pipe 11, a flexible A hand operating tube 13 having a handle 13 a attached to the other end of the conductive hose 12, a plurality of extension tubes 14 and 15 connected to the hand operating tube 13, and a suction port body 20 connected to the extension tube 15. Have.
[0012]
In the cleaner body 10, a paper bag-made dust collecting filter 16 and an electric blower 17 are arranged in the front-rear direction.
[0013]
The electric blower 17 sucks air into the inside from the front (the dust collecting filter 16 side), flows the sucked air into the motor part (not shown), cools the inside, and then from the side (or the back). It is designed to exhaust. There are various types of such circulation methods. Circulation is performed between the cleaner body 10 and the suction port body 20 (in the case of the figure, the dotted line arrow is the intake air passage, and the thick line arrow is the exhaust air passage). There is no particular limitation as long as it is configured.
[0014]
The suction port body 20 is connected to the tip of the extension tube 15 (connection to the tip of the extension tube 14 or the hand control tube 13 is also possible. There is also a direct connection to the so-called handy type cleaner body). Connecting pipe 30, rotating pipe 40 coupled to connecting pipe 30, and suction port body 50 rotatably held by rotating pipe 40.
[0015]
As shown in FIG. 1, the connection tube 30 includes a hollow cylindrical inner tube 31, and an upper cover 32 and a lower cover 33 that cover the outer periphery of the inner tube 31 in the vertical direction. The upper cover 32 is detachably fixed to the upper portion of the inner tube 31 with a fixing screw (not shown), and the lower cover 33 is detachably fixed to the lower portion of the inner tube 31 with a fixing screw (not shown). .
[0016]
An intake air passage 34 is formed in the inner tube 31, an upper exhaust air passage 35 is formed between the upper cover 32 and the upper portion of the inner tube 31, and between the lower cover 33 and the lower portion of the inner tube 31. Is formed with a lower exhaust air passage 36. Further, the upper exhaust air passage 35 and the lower exhaust air passage 36 are joined on the side on the tip side. Further, a pair of left and right hollow shafts 37 (only one is shown in FIG. 1) are integrally formed on the side of the upper cover 32, and a side circulation air passage 38 is formed in the hollow shaft 37.
[0017]
The rotary tube 40 is mounted in front of the rotary tube main body 41 and a rotary tube main body 41 having a double-section cross section having an arc-shaped receiving portion 41 a that regulates the rotation range of the connection pipe 30 around the hollow shaft 37. In addition, a holding cylinder 42 having a double cross-sectional structure and a receiving member 43 fixed to a lower case 51 to be described later for supporting the lower portion of the rotary tube main body 41 are provided.
[0018]
The holding cylinder 42 is fixed with respect to the suction port main body 50 and allows rotation around the axis of the rotary tube main body 41. Therefore, in the operation of the hand operation tube 13, the vertical displacement of the hand operation tube 13 while maintaining the ground contact state on the surface to be cleaned of the suction inlet body 50 is changed in the connection tube 30 around the hollow shaft 37. Rotation of the connecting pipe 30 around the hollow shaft 37 is allowed to swing in the left-right direction of the hand operating pipe 13 while maintaining the ground contact state on the surface to be cleaned of the suction inlet main body 50. Further, this is allowed by cooperation with the rotation of the rotary tube body 41 with respect to the holding cylinder 42. The rotary tube main body 41 and the holding cylinder 42 are formed with concavities and convexities (not shown) that engage with each other in order to restrict the rotation range of the rotary tube main body 41.
[0019]
The rotary tube main body 41 and the inner cylinders 41 b and 42 a of the holding cylinder 42 form an intake air passage 44 that communicates with the intake air passage 34 substantially coaxially. Further, between the outer side of each of the inner tubes 41 b and 42 a of the rotary tube main body 41 and the holding tube 42 and the outer wall 41 c of the rotary tube main body 41, there is a side by the cooperation of the rotary tube main body 41, the holding tube 42 and the receiving member 43. An exhaust air passage 45 communicating with the partial circulation air passage 38 is formed. Further, as shown in FIG. 2, the front of the holding cylinder 42 is expanded sideways, and the front open end thereof is an intake air passage inlet 46.
[0020]
The suction port body 50 includes a lower case 51 that is substantially T-shaped in plan view, an upper case 52 that covers the upper front side of the lower case 51, and an outer periphery of the suction port body that is sandwiched between the cases 51 and 52. A bumper 53 to be protected, wheels 54 and 55 rotatably held around the lower case 51, and a rotary cleaning body 60 sandwiched between the cases 51 and 52 are provided.
[0021]
A wide suction opening 51 a is formed on the bottom surface of the lower case 51 near the front. Further, the lower case 51 is formed with an exhaust air passage inner wall 51b raised so as to surround both sides and the rear of the suction opening 51, and an exhaust air passage outer wall 51c surrounding the exhaust air passage inner wall 51b. .
[0022]
Further, the upper case 52 is connected to the exhaust air passage inner wall 51b so as to be attached to both ends of the rotary cleaning body 60 and the holding cylinder 42, and the exhaust air flow is attached to the exhaust air passage outer wall 51b of the lower case 51. A road outer wall (not shown) is integrally formed.
[0023]
The exhaust air passage inner walls 51b and 52a form a suction chamber 56 communicating with the intake air passage inlet 46 above the suction opening 51a. Further, the exhaust air passage inner walls 51b, 52a and the exhaust air passage outer wall 51c (the upper case 52 side is not shown) form a communication exhaust air passage 57 that communicates with the exhaust air passage 45 when they are in contact with each other.
[0024]
The rotary cleaning body 60 includes a head portion 61 provided at both ends and facing the communication exhaust air passage 57, a bearing portion 62 positioned inside each head portion 61 and sandwiched between the exhaust air passage inner walls 51b and 52a, A shaft 63 rotatably held between the bearing portions 62, and protruded from the shaft 63 and bent so that the front end side faces rearward (intake air passage inlet 46 side) when facing the suction opening 51a. And a plurality of rubber blades 64 as cleaning members.
[0025]
An introduction path 65 communicating with the communication exhaust air path 57 is formed in the head portion 61 and the bearing portion 62.
[0026]
The shaft 63 is a hollow shaft, and an air guide path 66 communicating with the introduction path 65 is thereby formed.
[0027]
The blade 64 is formed to be wide along the axial direction of the shaft 63, and an injection air passage 68 that is communicated with the air guide passage 66 is formed so as to inject exhaust air from an air outlet 67 formed at the tip thereof. Yes.
[0028]
Next, the operation of the vacuum cleaner having such a configuration will be described.
[0029]
When the electric blower 17 is driven by operating the operation panel 13b provided on the handle 13a, the suction side of the electric blower 17, that is, the connection pipe 11, the flexible hose 12, the hand operation pipe 13, and the extension pipe are driven by the suction action. The intake air passages (refer to the dotted arrows in FIG. 4) provided in 14 and 15, the intake air passages 34 and 44, and the suction chamber 56 become negative pressure, and dust is sucked from the suction opening 51 a and stored in the dust collection filter 16. Is done.
[0030]
On the other hand, the exhaust air after cooling the inside of the electric blower 17 is exhausted through the connection pipe 11, the flexible hose 12, the hand control pipe 13, and the extension pipes 14 and 15 (see the thick arrows in FIG. 4). ) And the exhaust air passages 35 and 36, the side circulation air passage 38, the exhaust air passage 45, the communication exhaust air passage 57, the introduction passage 65, the air guide passage 66, and the injection air passage 68. The
[0031]
By this injection, the rotary cleaning body 60 rotates clockwise in the state of FIG. When the rotary cleaning body 60 rotates, from the state where the blade 64 shown in FIG. 3 (A) is in contact with the surface of the surface to be cleaned M (for example, carpet), as shown in FIGS. 3 (B) and 3 (C), The blade 64 gradually enters the surface to be cleaned M and strikes it, and at the same time, relatively large dust J that has entered the surface to be cleaned M is blown off (raised) by the exhaust gas ejected from the outlet 67. it can.
[0032]
At this time, the direction of the exhaust gas sprayed onto the surface to be cleaned M blows out toward the rear of the suction port body 20, that is, toward the intake air passage inlet 46, so that the dust J blown off can be efficiently sucked. Further, as shown in FIG. 3C, since the exhaust gas is injected toward the surface to be cleaned M even when the blade 64 is separated from the surface to be cleaned M, it is possible to ensure a long operation time on the surface to be cleaned M. it can. 3A to 3C, the symbol P is the center of the shaft 63 and the rotational center of the rotary cleaning body 60.
[0033]
Further, when a relatively hard surface such as a floor board or a fold is used as the surface to be cleaned, the blade 64 rotates in a non-contact state, but as shown in FIG. By injecting the exhaust gas in a state of being in the air, it becomes possible to blow off dust or the like that has entered a gap such as a groove formed between floor boards or tatami mats, and the effective use range at the time of cleaning the blade 64 can be expanded. .
[0034]
In the above embodiment, the exhaust air is guided as the air pressure generated in accordance with the negative pressure action in the suction chamber 56. However, for example, the suction port body main body in accordance with the negative pressure action in the suction chamber 56 is disclosed. The outside air may be taken in from the side or the rear of 50, and the outside cleaning air 60 may be rotated and jetted from the outlet 67 by this outside air. Further, the rotation of the rotary cleaning body 60 itself may be performed by a motor or the like.
[0035]
【The invention's effect】
As described above, the suction port body of the present invention has a rotary cleaning body that protrudes from the shaft with the air guide passage formed on the shaft so that air is guided in accordance with the negative pressure action in the suction chamber. A plurality of cleaning members bent at the front end side, and an injection air passage formed on each cleaning member and communicated with the air guide passage so as to inject air from the air outlet formed at the front end of each cleaning member As a result, it is possible not only to easily lift dust and the like located on the back side of the surface to be cleaned, but also to efficiently suck up the dust that has been lifted, and to the surface to be cleaned. The working time can be made long and deep, and the dust suction efficiency on the surface to be cleaned can be further improved.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a main part of a suction port body according to the present invention.
FIG. 2 is a plan view of the suction port body according to the present invention with the upper cover removed.
FIGS. 3A and 3B show the operation of the cleaning member according to the present invention in time series, in which FIG. 3A is an explanatory view of the main part immediately before the hitting / blowing action, and FIG. (C) is explanatory drawing of a blowing action state.
FIG. 4 is an external perspective view of a vacuum cleaner equipped with a suction port according to the present invention.
[Explanation of symbols]
1 ... Vacuum cleaner (circulating vacuum cleaner)
DESCRIPTION OF SYMBOLS 10 ... Vacuum cleaner main body 17 ... Electric blower 20 ... Suction port body 51 ... Lower case 51a ... Suction opening 56 ... Suction chamber 60 ... Rotary cleaning body 66 ... Air guide path 63 ... Shaft 64 ... Blade (cleaning member)
67 ... Blowout port 68 ... Blowing air path

Claims (3)

A suction opening provided in the bottom surface of the main body, a suction chamber provided in the upper part of the suction opening, an intake air passage inlet provided in communication with the suction chamber, and provided in the suction chamber and centered on the axis In the suction port body provided with a rotatable rotary cleaning body,
The rotary cleaning body includes an air guide path formed in the shaft so that air generated in accordance with a negative pressure action in the suction chamber is guided, and a plurality of cleanings protruding from the shaft and bent at a distal end side. And a jet air passage that is formed in each of the cleaning members and communicates with the air guide passage so as to inject air from an air outlet formed at the tip of each of the cleaning members. Suction mouth to do. Used in a circulation type vacuum cleaner that is independently connected to an intake air passage that communicates with an intake side of an electric blower provided in a vacuum cleaner body and an exhaust air passage that communicates with an exhaust side of the electric blower A suction port,
The suction port body includes a suction opening provided in a bottom surface, a suction chamber provided in an upper portion of the suction opening, and an intake air passage inlet provided in communication with the suction air passage. A rotary cleaning body provided in the suction chamber and rotatable about an axis, and a guide air path communicating with the exhaust air path and an end of the shaft,
The rotary cleaning body includes an air guide passage formed on the shaft so as to communicate with the guide air passage, a plurality of cleaning members protruding from the shaft and bent at a distal end side, and the cleaning members. A suction port body comprising an injection air passage formed and communicated with the air guide passage so as to inject air from an air outlet formed at a tip of each cleaning member. A circulation type vacuum cleaner comprising the suction port body according to claim 2.

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