JP5039459B2 - Suction body of vacuum cleaner and vacuum cleaner provided with the same - Google Patents

Description

  The present invention relates to a vacuum cleaner.

  As a suction body of a conventional vacuum cleaner, for example, there is Patent Document 1 (Japanese Patent Laid-Open No. 7-39492).

  A rotary cleaning body (rotary cleaning body) is arranged in the rotary cleaning body storage chamber in the suction port body, and a bearing assembly part that pivotally supports the rotary cleaning body is provided on one side of the rotary cleaning body, and the driven shaft coupling on the other side. Is provided. The driven shaft joint is fitted with a gear joint that transmits the driving force of the electric motor, and transmits the driving force of the electric motor to the rotary cleaning body. A bearing guide that holds a bearing that supports the shaft of the gear joint is provided in the lower case of the suction port body.

  The bearing guide has cooling holes formed on the upper surface and side surfaces thereof to cool the bearing. The side cooling hole communicates with the side surface of the suction port body so that external air flows from the side surface of the suction port body.

JP 7-39492 A (refer to FIG. 3, FIG. 3, FIG. 8, FIG. 9)

  However, in Patent Document 1, the side cooling hole communicates with the side surface of the suction port body, and external air flows from the side surface of the suction port body. When moved in the direction, the dust on the surface to be cleaned rises, and the soared dust is sucked into the suction port main body side together with air from the cooling hole on the side surface.

  For this reason, the dust sucked together with the air enters the bearing, and the sliding of the bearing becomes worse, the rotational force of the rotary cleaning body is lowered, and the dust scraping force on the surface to be cleaned is lowered. Further, if dust enters the bearing and the amount of accumulated dust increases, the bearing may be unable to rotate.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described problems, and is a suction body for an electric vacuum cleaner capable of cooling the bearing while suppressing the ingress of dust into the bearing, and an electric vacuum cleaner having the same. Is to provide a machine.

In order to achieve the above object, the present invention is characterized in that a suction body having an opening on the lower surface, a rotary cleaning body storage chamber communicating with the opening, and a rotation disposed in the rotary cleaning body storage chamber A cleaning body, a driving means for driving the rotary cleaning body, a cleaning body bearing provided on any one of the rotary cleaning bodies and rotatably supporting the rotary cleaning body, and the other end of the rotary cleaning body A driven joint provided, a main coupling that engages with the driven joint and transmits the driving force of the driving means to the rotary cleaning body, a pulley that transmits the driving force of the driving means to the main driving joint, and the pulley A bearing that pivotally supports the pulley, and a pulley storage portion that stores the pulley and the bearing,
A suction port provided on an upper surface of the suction port body; a first communication path that communicates the suction port with the pulley housing; and a second that communicates the pulley housing and the rotary cleaning body housing chamber. It is in the suction body of the vacuum cleaner which provided the communication part.

  Further, the present invention is characterized in that a vacuum cleaner main body having a dust collecting unit and an electric blower, a hose connected to the vacuum cleaner main body, a hand operation unit connected to the hose, and the hand operation unit An extension pipe connected to the extension pipe, and a suction body connected to the extension pipe, the suction body including a suction body having an opening on a lower surface, a rotary cleaning body storage chamber communicating with the opening, A rotary cleaning body disposed in the rotary cleaning body storage chamber; drive means for driving the rotary cleaning body; and a cleaning body bearing provided on any one of the rotary cleaning bodies and rotatably supporting the rotary cleaning body. A driven joint provided at the other end of the rotary cleaning body, a main coupling that engages with the driven joint and transmits the driving force of the driving means to the rotary cleaning body, and the driving joint is connected to the main driving joint. A pulley for transmitting a driving force; a bearing for pivotally supporting the pulley; A pulley housing portion for housing a roller and a bearing, an air inlet provided in an upper surface portion of the suction body, a first communication path communicating the air inlet and the pulley housing portion, and the pulley The vacuum cleaner includes a second communication unit that communicates the storage unit with the rotary cleaning body storage chamber.

  According to the present invention, the intake port provided on the upper surface portion of the suction port body, the first communication path that communicates the intake port and the pulley storage unit, and the pulley storage unit and the rotary cleaning body storage chamber communicate with each other. Since the second communication portion is provided, the electric vacuum cleaner that can cool the bearing housed in the pulley housing portion while suppressing the ingress of dust into the bearing by the air above the suction body with a small amount of dust. A mouthpiece of a machine and a vacuum cleaner provided with the same can be provided.

  Embodiments according to the present invention will be described below with reference to the accompanying drawings. FIG. 8 is an overall external view of a vacuum cleaner according to one embodiment of the present invention.

  304 is a vacuum cleaner body that houses the dust collector and the electric blower, 305 is a hose joint that is connected to the front of the vacuum cleaner body 304 and communicates with the dust collector, and 303 is a hose that is rotatably connected to the hose joint 305. It is. One end of the hose 305 is connected to the cleaner main body 304 via the hose joint 305 and communicates with the dust collecting portion. Reference numeral 306 is a hand-operated operation unit having one end rotatably connected to the other end of the hose 303 and having switch means for turning on and off the operation of the vacuum cleaner, and 302 is a telescopic unit having one end connected to the other end of the hand operation unit 306. A possible extension pipe 301 is a suction body which is connected to the other end of the extension pipe 302 and sucks dust on the cleaning surface.

  The vacuum cleaner uses the suction force generated by the electric blower accommodated in the vacuum cleaner body 304 to convey the dust on the surface to be cleaned sucked from the lower surface of the suction body 301 through the extension pipe 302 and the hose 303 into the dust collecting portion. I have to.

  Next, the structure of the mouthpiece 301 of the present embodiment will be described with reference to FIGS. FIG. 4 is an exploded perspective view of the mouthpiece 301 according to one embodiment of the present invention, and FIG. 5 is a bottom perspective view and a partially enlarged view of the mouthpiece 301 according to one embodiment of the present invention.

  4 and 5, the suction body 301 has a lower case 206 having an opening 101 on the lower surface, and an upper case 205 attached to the upper side of the lower case 206, and the lower case 206 and the upper case 205 A mouthpiece body 200 is formed.

  A universal joint portion 701 is provided at the rear of the mouthpiece main body 200 at a central portion in the left-right (width) direction. One end of the universal joint 701 is rotatably connected to the mouthpiece main body 200 and can be rotated from a substantially horizontal state to a substantially vertical state with respect to the surface to be cleaned, and one end is a lower arm. An upper arm portion 703 that is pivotably connected to the other end of the portion 702 and is rotatable in the left-right direction with respect to the mouthpiece main body 200 is provided. An extension tube 302 is connected to the other end of the upper arm 703. The universal joint portion 701 has a function of allowing the extension pipe 302 to be tilted in the left-right direction of the mouthpiece body 200 in a state where the extension pipe 302 is substantially perpendicular to the surface to be cleaned. For this reason, by twisting in the left or right direction of the hand operation unit 306, the suction body 200 can be rotated approximately 90 degrees in the left or right direction, and the left and right direction of the suction body 200 can be cleaned in the moving direction. The mouthpiece 301 can be moved along the wall, or can be cleaned by inserting the mouthpiece 301 into a narrow gap.

  The suction body 200 is formed with a rotary cleaning body storage chamber 102 for storing the rotary cleaning body 201 and communicates with the opening 101 of the lower case 206. The rotary cleaning body storage chamber 102 communicates with the extension pipe 302 via a universal joint 701. In the rotary cleaning body storage chamber 102, a rotary cleaning body 201 having a spiral brush or blade on the outer periphery is stored. A cleaning body bearing 204 that rotatably supports the rotary cleaning body 201 is provided at one end of the rotary cleaning body 201, and the outer periphery of the cleaning body bearing 204 is held by a lower case 206. A driven joint 203 is provided at the other end of the rotary cleaning body 201. This driven joint 203 is connected to a main driving joint 202 described later, and the driving force of the electric motor 801 is transmitted to the rotary cleaning body 201 through the main driving joint 202.

  A method for attaching and detaching the rotary cleaning body 201 will be described with reference to FIGS. 2 and 3. FIG. 2 is a bottom perspective view of the mouthpiece 301 according to one embodiment of the present invention, and FIG. 3 is a diagram showing the relationship between the main coupling 202 and the driven coupling 203.

  Reference numeral 208 denotes a bearing cover that covers the cleaning body bearing 204, and the engaging portion is released by pulling the lever 210 outward, so that the bearing cover 208 can be detached from the mouthpiece body 200. When the bearing cover 208 is removed from the inlet body 200, the lower portion of the cleaning body bearing 204 is opened, and the cleaning body bearing 204 is removed from the recess 103 formed in the lower case 206. The driven joint 203 of the rotary cleaning body 201 has a plurality of convex portions 203a and concave portions 203b, and the main coupling 202 has a plurality of convex portions 202a and concave portions 202b. And the convex part 203a of the driven joint 203 is engaged with the concave part 202b of the main joint 202, the concave part 202b of the driven joint 203 is engaged with the convex part of the main joint 202, and the main joint 202 and the driven joint 203 are connected. Yes. When the cleaning body bearing 204 is removed from the recess 103, the main coupling 202 and the driven joint 203 are disengaged, and the rotary cleaning body 201 can be detached from the mouthpiece 301.

  Returning to FIG. 4, an electric motor 801 as a driving unit that generates a driving force for rotating the rotary cleaning body 201 is provided at the center bottom of the suction mouth main body 200. A shaft 401 is provided behind the rotary cleaning body storage chamber 102, and the driving force of the electric motor 801 is transmitted to the shaft 401 via the belt 402. The driving force of the shaft 401 is transmitted to the pulley 803 via the belt 802. The pulley 803 is pivotally supported by bearings 603 and 604 on both sides thereof. The pulley 803 and the bearings 603 and 604 are accommodated in the pulley accommodating portion 606. In the present embodiment, the driving force transmission mechanism 600 is constituted by the main coupling 202, the pulley 803, and the bearings 603 and 604.

  Next, the configuration of the driving force transmission mechanism 600 will be described with reference to FIGS. 6 is a perspective view of a driving force transmission mechanism 600 according to an embodiment of the present invention, and FIG. 7 is a cross-sectional view taken along line AA in FIG.

  6 and 7, the pulley 803 is formed in a gear shape, and a belt 802 is hung on this portion. Bearings 603 and 604 are disposed on both sides of the pulley 803. Further, the main coupling 202 is provided next to the pulley 803 with the bearing 604 interposed therebetween. A metal shaft 601 is provided from the bearing 603 to the main coupling 202 so as to connect the bearing 603, the pulley 803, the bearing 604, and the main coupling 202. The bearings 603 and 604 are respectively provided with oil metals 603a and 604a and holding portions 603b and 604b disposed on the outer periphery thereof. The outer periphery of the oil metals 603a and 604a and the inner periphery of the holding portions 603b and 604b are provided. The oil metals 603a and 604a are rotatably held by the holding portions 603b and 604b. A shaft 601 is fixed to the oil metals 603a and 604a. A pulley 803 and a main coupling 202 are fixed to the shaft 601. Between the bearing 603 and the pulley 803, between the bearing 604 and the pulley 803, and between the bearing 604 and the main coupling 202, a slidable polyslider washer 605 (605a, 605b, 605c) is disposed. In the above configuration, the driving force of the electric motor 801 transmitted to the pulley 803 is transmitted to the main coupling 202 via the shaft 601.

  In the above configuration, the driving force for rotating the electric motor 801 is transmitted to the belt 402, the shaft 401, and the belt 802, and is transmitted to the pulley 803. When the pulley 803 rotates, the polyslider washer 605a and the oil metal 603a, the contact surface between the oil metal 604a and the polyslider washer 605b, and between the polyslider washer 605 (605a, 605b, 605c) and the metal shaft 601 are rotated. Friction heat is generated.

  When the temperature rises due to frictional heat, the generated heat is concentrated on the metal shaft 601 having a high thermal conductivity. Since the pulley 803 fixed to the shaft 601 is made of resin, the resin portion of the pulley 803 that is in contact with the metal shaft 601 may be distorted by heat, and the metal shaft 601 may idle. When the metal shaft 601 is idled, the driving force of the electric motor 801 is not transmitted to the rotary cleaning body 201, and the cleaning performance is deteriorated. Conventionally, it has been proposed to form a cooling hole in a portion that holds the bearing, but the formation position of the cooling hole has not been considered at all. Conventionally, a cooling hole for taking in air from the outside is formed on the side surface of the suction body. For this reason, when the suction port body is moved in the front-rear direction during cleaning, dust on the surface to be cleaned rises, and the soared dust is sucked into the suction port body side together with air from a cooling hole on the side surface. And the dust sucked together with the air enters the bearing, and the sliding of the bearing becomes worse, the rotational force of the rotary cleaning body is lowered, and the dust scraping force on the surface to be cleaned is lowered. Further, if dust enters the bearing and the amount of accumulated dust increases, the bearing may be unable to rotate.

  A structure for preventing this will be described with reference to FIG. FIG. 1 is an external perspective view and a partially enlarged view of a mouthpiece 301 according to an embodiment of the present invention.

  In FIG. 1, an air inlet 901 for taking in air from the outside is provided on the upper surface portion of the upper case 205 of the inlet body 200. A first communication path 902 that communicates with the intake port 901 is formed on the back side of the upper case 205 (the rotary cleaning body storage chamber 102). Above the pulley 803, a plurality of ventilation holes 903 communicating with the pulley storage portion 606 are provided. The pulley housing portion 606 is formed by the lower case 206, and the plurality of ventilation holes 903 are formed on the upper surface portion of the lower case 206. The plurality of ventilation holes 903 are formed on the pulley housing portion 606 side of the first communication path 902 and serve as outlets for the air flow of the first communication path 902.

  A second communication path 904 is formed between the pulley storage unit 606 and the rotary cleaning body storage chamber 102 to communicate the pulley storage unit 606 and the rotary cleaning body storage chamber 102 side. In the present embodiment, a second communication path 904 is formed in the holding portion 604 b of the bearing 604. The second communication path 904 is provided outside the outermost peripheral diameter of the pulley 803. Thereby, air can be smoothly flowed without inhibiting the flow of air.

  In the above configuration, when the electric blower starts operation, a suction force is generated, the suction body 301 has a negative pressure, air is sucked from the opening 101 of the suction body 301, the rotary cleaning body storage chamber 102, the universal joint 701. Air flows into Since the air inlet 901 and the rotary cleaning body storage chamber 102 communicate with each other via the first communication path 902 and the second communication path 904, air is sucked from the air inlet 901. As shown by an arrow 905, the air sucked from the intake port 901 flows through the first communication path 902 and flows into the pulley storage portion 606 from the plurality of ventilation holes 903. The air discharged from the plurality of ventilation holes 903 cools the polyslider washers 605 (605a, 605b, 605c) disposed in the pulley housing 606, the oil metal 603a, the oil metal 604a, and the metal shaft 601. And the air which cooled these flows through the 2nd communicating path 904 to the rotary cleaning body storage chamber 102, as shown by the arrow 906. FIG. Since the intake port 901 is provided on the upper surface of the suction body 200 and is provided at a position away from the surface to be cleaned, it is possible to prevent the dust that has moved up from the surface to be cleaned by being moved with the suction body 301. For this reason, in the present embodiment, the bearing stored in the pulley storage portion 606 can be cooled while suppressing the entry of dust into the bearing by the air above the inlet body 200 with a small amount of dust.

  Further, in this embodiment, air flows from the pulley housing portion 606 to the rotary cleaning body housing chamber 102 via the second communication path 904, so that dust sucked together with air from the opening portion 101 of the mouthpiece body 301 is on the bearing side. It is possible to prevent the dust from being conveyed to the bearing and to prevent dust from entering the bearing.

It is the external appearance perspective view and partial enlarged view of the mouthpiece 301 which concern on one Example of this invention. It is a bottom perspective view of mouthpiece 301 concerning one example of the present invention. It is a figure which shows the relationship between the main coupling 202 and the driven coupling 203. FIG. It is a disassembled perspective view of the mouthpiece 301 which concerns on one Example of this invention. It is the bottom perspective view and partial enlarged view of mouthpiece 301 concerning one example of the present invention. 5 is a perspective view of a driving force transmission mechanism 600 according to an embodiment of the present invention. FIG. It is AA sectional drawing of FIG. 1 is an overall external view of a vacuum cleaner according to an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Opening part 102 Rotating cleaning body storage chamber 200 Suction body 201 Rotating cleaning body 202 Drive joint 203 Driven joint 204 Cleaning body bearing 205 Upper case 206 Lower case 301 Suction body 603, 604 Bearing 606 Pulley storage part 803 Pulley 901 Inlet 902 First One communication path 903 A plurality of ventilation holes 904 Second communication path

Claims (3)

A mouthpiece body having an opening on the lower surface; a rotary cleaning body storage chamber communicating with the opening; a rotary cleaning body disposed in the rotary cleaning body storage chamber; a driving means for driving the rotary cleaning body; a cleaning element bearing for rotatably supporting the rotary cleaning body provided on either one of the rotary cleaning body, and the driven joint that is provided on the other end portion of the rotary cleaning body, the driven coupling engagement with the A main coupling that transmits the driving force of the driving means to the rotary cleaning body, a pulley that transmits the driving force of the driving means to the main driving joint, a bearing that pivotally supports the pulley, and a pulley that houses the pulley and the bearing A storage section;
The drive means is provided at the center bottom of the mouthpiece body,
An intake port provided on the pulley storage part side of the upper surface part of the suction body and the central part of the suction body; a first communication path communicating the suction port and the pulley storage part; and the pulley storage The mouthpiece of the vacuum cleaner characterized by providing the 2nd communication part which connects a part and the said rotation cleaning body storage chamber. In claim 1,
A mouthpiece of a vacuum cleaner, wherein a plurality of ventilation holes are provided on the pulley housing portion side of the first communication path, and the plurality of ventilation holes are arranged above the pulleys. A vacuum cleaner body having a dust collecting part and an electric blower, a hose connected to the vacuum cleaner body, a hand operating part connected to the hose, an extension pipe connected to the hand operating part, and the extension pipe And a mouthpiece connected to the
The mouthpiece is
A mouthpiece body having an opening on the lower surface; a rotary cleaning body storage chamber communicating with the opening; a rotary cleaning body disposed in the rotary cleaning body storage chamber; a driving means for driving the rotary cleaning body; a cleaning element bearing for rotatably supporting the rotary cleaning body provided on either one of the rotary cleaning body, and the driven joint that is provided on the other end portion of the rotary cleaning body, the driven coupling engagement with the A main coupling that transmits the driving force of the driving means to the rotary cleaning body, a pulley that transmits the driving force of the driving means to the main driving joint, a bearing that pivotally supports the pulley, and a pulley that houses the pulley and the bearing A storage section;
The drive means is provided at the center bottom of the mouthpiece body,
An intake port provided on the pulley storage part side of the upper surface part of the suction body and the central part of the suction body; a first communication path communicating the suction port and the pulley storage part; and the pulley storage A vacuum cleaner, characterized in that a second communication part is provided for communicating the part and the rotary cleaning body storage chamber.

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