JP4444075B2 - Vacuum cleaner inlet and vacuum cleaner - Google Patents

Description

  The present invention relates to a suction port body of a vacuum cleaner that communicates with a suction side of an electric blower housed in a vacuum cleaner body, and a vacuum cleaner including the same.

Conventionally, a floor brush as a suction port body of this type of vacuum cleaner has a horizontally long case body. In the case body, a suction port is formed in the lower surface, and a rotary brush is rotatably attached to the suction port. In addition, a communication pipe whose base end portion communicates with the suction port protrudes from the rear portion of the case body. Furthermore, on both sides of the communication pipe on the lower side of the case body, wheels that allow the case body to travel in the front-rear direction on the floor surface are rotatably provided. Then, the operator grasps the hand operation part at the tip of the hose body communicated with the suction side of the electric blower of the electric vacuum cleaner, and extends the extension pipe connected to the tip of the hand operation part. Cleaning is performed by running a floor brush having a communication pipe connected to the tip of the pipe back and forth on the floor surface (see, for example, Patent Document 1).
JP-A-11-346968 (page 3-4, FIG. 3)

  However, in the suction mouth of the vacuum cleaner described above, for example, if hair such as human hair or pet hair is on the floor surface, when the floor brush is run back and forth, the hair is applied to the rotating shaft of the wheel. There is a problem that dust is entangled, the rotation of the wheel is deteriorated, and the operability of the floor brush is not good.

  Further, there is a problem that the hair entangled with the rotating shaft of the wheel cannot be easily removed from the rotating shaft, and the maintainability is not good.

  This invention is made | formed in view of such a point, and it aims at providing the suction inlet body of a vacuum cleaner which can ensure favorable operativity and maintainability, and a vacuum cleaner provided with the same.

The present invention includes a main body portion having flat portions adjacent to each other in a bending manner in the advancing and retreating direction of the case body, a part of the main body portion being planar and attached to each flat surface portion of the main body portion and adjacent to the advancing and retreating direction of the case body, A shaft support hole formed in a long hole shape along the advancing / retreating direction of the case body, and a swing that is inserted into the shaft support hole and moves relatively within the shaft support hole in accordance with the advancement / retraction of the case body A grounding portion having a shaft is provided, and both end portions in the advancing and retreating direction of the case body at the lower portion of the shaft support hole are bent along the respective plane portions of the main body portion, and the grounding portion is advanced and retracted by the case body plane of napped cloth that corresponds to the traveling direction of the case body by the main body portion around a pivot shaft held by relatively moving the end portion side of the shaft support hole of the shaft support hole is swung in accordance with The portion of the shape selectively contacts the surface to be cleaned.

According to the present invention, when the case body is advanced and retracted on the surface to be cleaned , the lower portions on both end sides in the advancing and retracting direction of the case body are respectively formed along the respective plane portions and relatively moved in the shaft support holes bent with respect to each other. Then, the body portion swings around the swing shaft held on the end side of the shaft support hole, and the planar portion of the raised cloth corresponding to the traveling direction of the case body becomes the surface to be cleaned. Since the contact is selectively made, an increase in contact load with the surface to be cleaned due to the raised cloth can be suppressed, and good operability and maintainability can be secured without entanglement of the dust with the grounding portion.

  Hereinafter, the structure of the vacuum cleaner of one embodiment of the present invention will be described with reference to FIGS. 1 to 3.

  In FIG. 3, reference numeral 1 denotes a vacuum cleaner main body. The vacuum cleaner main body 1 collects dust sucked together with intake air generated by driving the electric blower 2 accommodated in a dust collection pack (not shown).

  The vacuum cleaner main body 1 has a main body suction port 3 for sucking air from the outside. An elongated substantially cylindrical hose body 4 that is flexible and can be bent is connected to the main body suction port 3. At the tip of the hose body 4, a hand operation unit 5 that can select an operation mode of the electric blower 2 is provided. The hand operation unit 5 is provided with a plurality of setting buttons 6 for setting the electric blower 2 and the like in the cleaner body 1 to a plurality of drive modes, and a gripping unit 7 that is held by an operator when cleaning. Projecting toward the base end side.

  Further, an elongated and substantially cylindrical extension tube 8 that can be expanded and contracted is detachably connected to the distal end of the hand operation unit 5. Further, the extension brush 8 is detachably attachable to the tip of the extension pipe 8, for example, a floor brush 9 which is placed on a carpet on the floor of the room and sucks dust on the carpet as a suction port of a vacuum cleaner. It is connected in communication.

  The floor brush 9 includes a case body 11, a rotating brush 12 as a rotary cleaning body rotatably provided in the case body 11, and a seesaw-type wheel as a grounding body attached to the case body 11. 13 and.

  The case body 11 is formed in a horizontally long shape, a lower case 21 whose upper side is opened, an upper case 22 attached to the upper side of the lower case 21, and a bumper 23 sandwiched between the lower case 21 and the upper case 22 And a communication pipe 24.

  In the lower case 21, as shown in FIG. 1, a suction port 26 is formed in a horizontally long opening at a lower side of FIG. Raised cloth portions 27 and 27 are provided on both front side portions of the lower surface of the lower case 21, respectively. Further, a projecting portion 28 located at the lower portion of the communication pipe 24 is provided at the center of the rear portion of the lower case 21 in the width direction. That is, the lower case 21 is formed in a substantially convex shape in plan view.

  A notch 31 that faces the lower portion of the communication pipe 24 is formed in a concave shape at the tip of the protrusion 28. Further, in the side wall portions 32, 32 which are both side portions of the cutout portion 31, shaft support holes (not shown) are respectively bored so as to be positioned in a straight line. Then, both end portions of the swing shaft 33 that supports the seesaw type wheel 13 are inserted into the shaft support holes so as to be swingable and are prevented from coming off.

  The upper case 22 closes the upper side of the lower case 21.

  Further, the bumper 23 is a buffer member when the floor brush 9 collides with an obstacle or the like, and is provided continuously from one side portion of the case body 11 to the other side portion via the front side of the case body 11. It has been.

  The communication pipe 24 has a base end portion communicating with the suction port 26 and pivotally supported between the lower case 21 and the upper case 22, and a distal end portion protruding rearward from the case body 11 to extend the extension pipe. 8 is detachably connected.

  Further, the rotating brush 12 has a brush base 35 as an elongated cylindrical shaft body and a plurality of cleaning members 36 attached around the brush base 35, and faces the suction port 26 in the case body 11. And is rotationally driven by a motor (not shown) provided in the case body 11. The drive of this motor is controlled by a control circuit (not shown) housed in the case body 11.

  The brush base 35 has bearings 37 attached to both ends thereof, and these bearings 37 are rotatably supported at both left and right ends in the lower case 21.

  Further, the cleaning member 36 is for grounding to the floor surface and scraping the dust on the floor surface or polishing the floor surface, the base end is engaged with the outer peripheral surface of the brush base 35 along the axial direction, The tip portion protrudes in the radial direction of the brush base 35.

  Further, as shown in FIGS. 1 and 2, the seesaw type wheel 13 has a main body portion 41 and brushed cloth portions 42 and 43 provided on the main body portion 41, and the rear side is fitted to the notch portion 31. In addition, the front end portion faces the lower surface of the protruding portion 28 of the case body 11. The seesaw type wheel 13, the side wall portions 32 and 32, the swing shaft 33, and the like constitute a grounding portion 44.

  The main body portion 41 is formed in a rectangular shape that is long in the front-rear direction of the floor brush 9 in a plan view, and a pair of side frame portions 45, 45 serving as both side portions and a pair of end frame portions 46, 46 serving as both end portions. And a bent plane portion 47 surrounded by a frame shape around the side frame portions 45 and 45 and the end frame portion 46, and an upper space portion 48 and a lower space portion above and below the bent plane portion 47. 49 and are divided.

  Each side frame portion 45 is formed of, for example, a rectangular plate-like member, and is a front frame portion 45a positioned on the left side shown in FIG. 2 which is the front side of the floor brush 9, and a rear side of the front side frame portion 45a. The rear side frame part 45b continued on the right side shown in FIG. 2 is provided. Further, the side frame portions 45 are provided symmetrically with respect to the center line in the front-rear direction. Further, each side frame portion 45 is provided with a shaft support hole 51 through which the swing shaft 33 is swingably inserted so as to span the front frame portion 45a and the rear frame portion 45b.

  The front frame portion 45a is linearly provided in a plan view along the front-rear direction of the floor brush 9, and is disposed so that the thickness direction is the left-right direction of the seesaw type wheel 13. And these front side frame parts 45a are formed so that a lower end part may become a substantially straight line shape.

  The rear frame portion 45b is bent upward relative to the front frame portion 45a. And these rear side frame parts 45b are formed so that a lower end part may become a substantially straight line shape similarly to the front side frame part 45a.

  For this reason, the side frame part 45 is formed in the substantially V shape which protrudes below by side view including the lower end part of each front frame part 45a and each rear frame part 45b.

  Further, the shaft support hole 51 is formed in a long hole shape along the front-rear direction of the floor brush 9, and can hold the swing shaft 33 at each of the front frame portion 45a side and the rear frame portion 45b side. And is bent in a substantially V shape along the side frame portion 45 at an intermediate portion between these portions. That is, in the shaft support hole 51, the swing shaft 33 is movable in the front-rear direction. These shaft support holes 51 have a vertical dimension substantially equal to the outer diameter of the swing shaft 33, and the swing shaft 33 is less likely to vibrate in the vertical direction within the shaft support hole 51.

  As a result, the seesaw-type wheel 13 is provided so as to be able to swing back and forth in the form of a seesaw around the swinging shaft 33 as the floor brush 9 advances and retreats in the front-rear direction. Any one of 43 can be selectively grounded to the floor.

  On the other hand, each end frame portion 46 is provided by connecting the front end portions of the front side frame portions 45a and 45a and the rear end portions of the rear side frame portions 45b and 45b to the left and right.

  Further, the bent flat portion 47 includes a flat portion 53 located on the front side of the seesaw type wheel 13 and a flat portion 54 located adjacent to the rear side of the flat portion 53 and located on the rear side of the seesaw type wheel 13. Have.

  The flat portion 53 is formed in a substantially central region in the vertical direction of each front frame portion 45a and the front end frame portion 46 so as to be substantially parallel to the lower end portion of the front frame portion 45a, and attached to which the raised cloth portion 42 is attached. A hole 53a is formed at the center in the front-rear direction. In the mounting hole 53a, the inner edge portion on the lower end side is curved in a curved shape.

  The plane portion 54 is formed in a substantially central region in the vertical direction of each rear frame portion 45b and the rear end frame portion 46 so as to be substantially parallel to the lower end portion of the rear frame portion 45b. Therefore, the flat portion 54 is formed by bending upward relative to the flat portion 53, and a continuous portion with the flat portion 53 is convex downward. Further, an attachment hole 54a to which the raised cloth portion 43 is attached is formed in the flat portion 54 at the center portion in the front-rear direction. In the mounting hole 54a, the inner edge portion on the lower end side is curved in a curved shape.

  The upper space 48 is a space where the swing shaft 33 inserted through the shaft support hole 51 is located, and the front portion is located below the protrusion 28 of the case body 11. For this reason, when the seesaw wheel 13 swings to a predetermined position, the protrusion 28 serves as a stopper at the front end, and the communication pipe 24 serves as a stopper at the rear end. It does not rotate around.

  Further, the lower space portion 49 is a space portion in which the raised cloth portions 42 and 43 are accommodated, and faces the floor surface.

  Further, the raised cloth portion 42 includes an attachment base 55 as an attachment portion and a raised cloth 56 attached to the attachment base 55.

  The mounting base 55 has a base body part 55a to which the raised cloth 56 is attached on the lower side, and a pair of locking parts 55b protruding upward from the base body part 55a.

  The base body 55a is formed in a quadrangular shape that follows the shape of the flat surface portion 53.

  The locking portions 55b and 55b are inserted through the mounting holes 53a to lock and fix the mounting base 55 to the flat surface portion 53, and are separated from each other in the front-rear direction of the mounting base 55 by the dimension in the front-rear direction of the mounting holes 53a. Has been. Further, locking projections 55c and 55c as claw portions that can be engaged with the inner edge portion of the mounting hole 53a on the upper space portion 48 side are projected from the distal ends of the locking portions 55b and 55b, respectively. .

  Further, the raised cloth 56 covers the lower surface of the base body part 55a and is attached to the base body part 55a, and both end portions and both side parts are folded back to the upper surface side of the base body part 55a, and the locking parts 55b and 55b are attached. It is being fixed to the base end part vicinity of. That is, the raised cloth 56 is attached to the base body part 55a so as to wrap the base body part 55a from below.

  The raised cloth portion 42 is arranged so that the direction of the hair of the raised cloth 56 corresponds to the direction in which the floor brush 9 advances, that is, the distal end portion of the raised cloth 56 is directed backward with respect to the proximal end portion. It is attached to the flat part 53 so as to incline. In this state, the raised fabric 56 has a lower end protruding in a planar shape from the lower end of the front frame portion 45a, and an upper end is sandwiched between the flat portion 53 and the upper surface portion of the base body portion 55a. The

  Similarly to the raised cloth portion 42, the raised cloth portion 43 includes an attachment base 58 as an attachment portion and a raised cloth 59 attached to the attachment base 58.

  The mounting base 58 has the same configuration as the mounting base 55. That is, the mounting base 58 includes a base body 58a to which the raised fabric 59 is attached, and a pair of locking portions 58b protruding upward from the base body 58a. The locking portions 58b and 58b are inserted into the mounting holes 54a to lock and fix the mounting base 58 to the flat surface portion 54, and are formed before and after the mounting holes 54a. Locking projections 58c and 58c as claw portions that are spaced apart from each other before and after the mounting base 58 and engageable with the inner edge portion on the upper space 48 side of the mounting hole 54a project from the tip portion. ing.

  Similarly to the raised cloth 56, the raised cloth 59 covers the lower surface of the table main body 58a and is attached to the table main body 58a, and both end portions and both side portions are folded back to the upper surface of the table main body 58a. Are fixed to the vicinity of the base ends of the locking portions 58b, 58b and attached to the base body 58a so as to wrap the base body 58a from below.

  Furthermore, the raised cloth portion 43 is arranged so that the direction of the hair of the raised cloth 59 is opposite to the direction of the raised cloth 56, that is, the direction of the raised cloth 59 is in the direction in which the floor brush 9 moves backward. Correspondingly, in other words, it is attached to the flat surface portion 54 so that the front end portion of the hair of the raised cloth 59 is inclined forward with respect to the base end portion. In this state, the raised fabric 59 has a lower end protruding in a planar shape from the lower end of the rear frame portion 45b and an upper end sandwiched between the flat portion 54 and the upper surface portion of the base body portion 58a. Is done.

  Then, when assembling the seesaw type wheel 13, the mounting base 55 to which the raised cloth 56 is attached is pushed onto the curved surface at the lower end of the inner edge portion of the mounting hole 53a by pushing the locking portions 55b and 55b into the mounting holes 53a. Then, the locking projections 55c and 55c are brought into contact with each other, so that the locking portions 55b and 55b are flexibly deformed so as to approach each other, and then the locking projections 55c and 55c are inserted into the upper space 48. Then, it is deformed and engaged with the edge of the upper end of the mounting hole 53a, and the raised cloth portion 42 is fixed to the main body portion 41. Further, the raised cloth portion 43 is fixed to the main body portion 41 by the same action.

  In this state, the raised cloth portions 42 and 43 are such that the front end portion of the raised cloth 56 contacts the rear end portion of the front end frame portion 46 without a gap, and the rear end portion of the raised cloth 59 is the rear end frame portion 46. The raised cloths 56 and 59 are provided so as to be adjacent to each other in the front-rear direction of the floor brush 9 with substantially no gap.

  Next, the cleaning operation according to the above embodiment will be described.

  First, the worker sequentially connects the hose body 4, the extension pipe 8, and the floor brush 9 to the main body suction port 3 of the cleaner body 1.

  Further, when the operator pulls out the power cord from the cleaner body 1 and connects it to an outlet (not shown), and then operates the predetermined setting button 6 by holding the holding portion 7, the operation mode set by the setting button 6 is set. Accordingly, the electric blower 2 is driven.

  Then, the operator grips the grip portion 7 and causes the floor brush 9 to run forward and backward on the floor surface, and sucks dust on the floor surface from the suction port 26.

  At this time, when the floor brush 9 is moved forward, as shown in FIG. 2A, the seesaw type is centered on the rocking shaft 33 slid forward in the shaft support hole 51 together with the floor brush 9. The wheel 13 swings like a seesaw so as to fall forward, and a raised cloth 56 whose hair direction is in the rearward direction contacts the floor and scrapes off dust on the floor.

  On the other hand, when the floor brush 9 is being moved backward, as shown in FIG. 2 (b), the seesaw-type wheel is centered on the rocking shaft 33 that slides backward in the shaft support hole 51 together with the floor brush 9. 13 is swung like a seesaw so as to fall backward, and a raised cloth 59 whose hair direction is in the forward direction contacts the floor surface and scrapes off dust on the floor surface.

  Further, the operator appropriately operates the predetermined setting button 6 according to the type of the floor surface, and the rotary brush 12 is driven to rotate. For example, when the floor surface is a carpet or the like, the cleaning member 36 of the rotating brush 12 scrapes off dust on the floor surface, and when the floor surface is flooring or the like, the cleaning member 36 of the rotating brush 12 polishes the floor surface.

  And the dust sucked together with air from the suction port 26 of the floor brush 9 is sequentially guided from the floor brush 9 to the main body suction port 3 of the cleaner body 1 after passing through the extension pipe 8 and the hose body 4. The dust is collected in a dust collection pack (not shown) accommodated in the cleaner body 1.

  Thereafter, the air in which the dust is collected is sucked into the electric blower 2 to become exhaust air, and is exhausted to the outside from an exhaust port (not shown) of the cleaner body 1.

  As described above, in the above embodiment, when the case body 11 of the floor brush 9 is advanced or retracted during cleaning or the like, one of the raised cloths 56 and 59 corresponding to the traveling direction of the case body 11 is changed. It was configured to selectively touch the floor.

  Specifically, when the case body 11 of the floor brush 9 is moved back and forth on the floor surface, when the case body 11 travels in the front direction, the brushed cloth in which the hair direction is in the rear direction 56 is grounded to the floor surface, and when the case body 11 is traveling in the rearward direction, the brushed cloth 59 in which the hair direction is in the forward direction is configured to be grounded to the floor surface.

  As a result, an increase in contact load with the floor surface due to the raised cloths 56 and 59 can be suppressed, and the seesaw type wheel 13 does not rotate. Since the dust does not get entangled with the swing shaft 33 and the seesaw type wheel 13 is locked and does not swing, the load during the operation of the floor brush 9 is not increased, and the floor brush 9 is operated well. As a result, it is possible to maintain good operability and maintain excellent operability, and it is not necessary for the operator to remove the entangled dust by hand, so that good maintainability can be ensured and hygienic.

  Further, the seesaw type wheel 13 is provided so as to be able to swing, and the raised cloths 56 and 59 are selectively grounded to the floor according to the swing, so that the traveling direction of the case body 11 is relatively simple. The raised fabrics 56 and 59 can be switched smoothly corresponding to the above.

  Specifically, by providing raised fabrics 56, 59 respectively in the plane portions 53, 54 adjacent to the front-rear direction of the case body 11 of the seesaw type wheel 13, by making the shaft support hole 51 into a long hole shape in the front-rear direction, As the case body 11 moves back and forth in the front-rear direction, the swinging shaft 33 moves relatively in the front-rear direction, so the displacement of the pivotal support position of the swinging shaft 33 triggers the seesaw type wheel 13 to move back and forth. Since it becomes easy to swing, the raised fabrics 56 and 59 can be switched smoothly in response to switching of the traveling direction of the case body 11.

  Furthermore, the lower end portion of the shaft support hole 51 is formed in a substantially V shape with the center in the front-rear direction protruding downward, so that the swing shaft 33 inserted through the shaft support hole 51 is connected to the lower end of the shaft support hole 51. It becomes easy to move to the front side and the rear side along the shape of the part, and the seesaw type wheel 13 becomes easier to swing.

  Then, by using the grounding portion 44 in the electric vacuum cleaner, it is possible to scrape and clean the floor surface with the raised cloths 56 and 59 of the seesaw type wheel 13.

In the above-described embodiment, as shown in FIG. 4 or FIG. 5 , the intermediate portion of the shaft support hole 51 that is the position where the swing direction of the seesaw type wheel 13 is switched is arranged before and after the shaft support hole 51. It is also possible to make the structure so that the seesaw type wheel 13 can be switched more smoothly by making it wider vertically.

  Further, the same effect as that of the above-described embodiment can be obtained even when the swing shaft 33 is protruded from the main body 41 of the seesaw type wheel 13 and the shaft support hole 51 is formed in the side walls 32, 32. be able to.

  A plurality of seesaw wheels 13 may be provided on the floor brush 9.

  Further, details of the seesaw type wheel 13 are not limited to the above configuration.

  Further, as the grounding portion, instead of the seesaw type wheel 13, for example, a raised cloth provided toward the front side in the running direction of the floor brush 9 and a raised cloth provided toward the rear side are used as separate members. Various other configurations are possible, such as a configuration in which these members are moved up and down so as to be selectively grounded in accordance with detection of the traveling direction of the floor brush 9.

  The vacuum cleaner is not limited to a canister type vacuum cleaner, and the floor brush 9 may be an upright type or a handy type directly formed on the lower surface of the vacuum cleaner body 1. Can do.

It is a bottom view which shows the suction inlet body of the vacuum cleaner of one embodiment of this invention. (a) is a side view showing the state of the grounding portion when the suction port body of the electric vacuum cleaner is moving forward, and (b) is a side view showing the state of the grounding portion when moving backward. It is a perspective view which shows the vacuum cleaner provided with the suction inlet of the vacuum cleaner same as the above. It is a side view which shows the earthing | grounding part of other embodiment of the suction inlet body of a vacuum cleaner same as the above. It is a side view which shows the earthing | grounding part of other embodiment of the suction inlet body of a vacuum cleaner same as the above.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner body 2 Electric blower 9 Floor brush as a suction mouth body of an electric vacuum cleaner
11 Case body
26 Suction port
33 Oscillating shaft
41 Body
44 Grounding section
51 shaft support hole
53, 54 Plane section
56, 59 Brushed cloth

Claims (2)

A suction port body of a vacuum cleaner communicating with the suction side of an electric blower housed in a vacuum cleaner body,
A case body with a suction port;
A main body portion having flat portions adjacent to each other in a bent shape in the advancing and retreating direction of the case body, a part of the main body portion being planar and attached to each of the flat surface portions of the main body portion and adjacent to the advancing and retreating direction of the case body, A shaft support hole formed in a long hole shape along the advancing / retreating direction of the case body in the main body portion, and the shaft support hole inserted into the shaft support hole relatively in the shaft support hole corresponding to the advance / retreat of the case body A grounding portion having a swing shaft that moves ,
The lower portion of the shaft support hole is bent by forming both end portions in the advancing and retreating direction of the case body along the flat portions of the main body,
The grounding portion moves relatively in the shaft support hole as the case body advances and retreats, and the main body portion swings about the swing shaft held on the end side of the shaft support hole. A suction port body of a vacuum cleaner, wherein a planar portion of the raised cloth corresponding to a traveling direction of the case body is selectively grounded to a surface to be cleaned . A vacuum cleaner body having an electric blower;
Vacuum cleaner characterized by comprising a suction port body of the electric vacuum cleaner according to claim 1, wherein communicating with the suction side of the electric blower.

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