JP4935497B2 - Vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner that can prevent a reduction in suction force caused by dust adhering to the inner wall of a dust collection bag.

  As a conventional electric vacuum cleaner of this type, a main body in which a dust collection chamber containing a dust bag for collecting dust is arranged at the front and an electric blower that generates suction air is arranged at the rear, and electric power is supplied to the electric blower. A cord reel having a plurality of projecting ribs on the peripheral wall, a dust removing body for applying vibration to the rear wall of the dust bag, and a bottom portion of the main body are rotatably provided. A vibration arm body connected to the lower portion of the dust removing body and having a contact portion that slides on the projection rib at the other end when the cord reel rotates, and a vibration arm body to press the contact portion against the projection rib. Some have a spring body that urges rotation.

  The operation of the conventional vacuum cleaner configured as described above is as follows.

When the user starts to use the electric vacuum cleaner, if the user tries to pull out the power cord from the main body of the vacuum cleaner, the cord reel rotates accordingly, and the contact portion of the vibration arm body resists the biasing force of the spring body. As the rider rides on the protrusion rib, the vibration arm body rotates, and at the same time, the dust removing body rotates backward, and when the abutment part of the vibration arm body gets over the protrusion rib, the biasing force of the spring body applies it. The swing arm body vigorously rotates in the opposite direction, and at the same time, the dust removing body vigorously hits the rear wall of the dust collection bag to drop the dust adhering to the inner wall of the dust collection bag (for example, Patent Document 1). reference).
JP 2006-141597 A

  However, in the configuration of the conventional vacuum cleaner, the vibration arm body is pivotally supported on the bottom of the vacuum cleaner body, so the diaphragm must be long and large, and the vibration arm body Since the diaphragm is rotated about the center of rotation, a large torque is required to rotate the diaphragm. For this reason, the biasing force of the spring body that biases the excitation arm body is also large. It was necessary to enlarge. As a result, a large force is required to rotate the vibration arm body. As a result, the force for pulling out the power cord becomes heavy, or the contact part is strongly pressed against the cord reel side by the spring body. Therefore, there were various problems such as rapid wear of the part and poor durability.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, and to provide an easy-to-use vacuum cleaner that reduces the pulling power of a power cord and is excellent in durability and dust removal performance.

  In order to solve the above-described conventional problems, an electric vacuum cleaner of the present invention includes an electric blower that generates suction air, a cord reel that winds and stores a power cord and has a protruding rib, and a dust collecting bag that collects dust. An approximately V-shaped contact portion that contacts the protruding rib at one end, and a rotatable turning lever, and one end engaged with the other end of the turning lever. There is a sliding lever that slides back and forth in conjunction with the movement operation, and there is a center of rotation at the bottom, and the top is rotated by striking at the other end of the sliding lever to rotate and vibrate the dust bag. A vibration plate to be added, a distance L1 from a rotation center of the rotation lever to a portion where the contact portion and the projecting rib are in contact, and a rotation lever from the rotation center of the rotation lever; The relationship with the distance L2 to the engaging portion with the sliding lever is expressed as L1 <L2. Compared with the conventional method in which the entire vibration plate is rotated and a large load is applied to the rotating part, the upper portion of the rotatable vibration plate is directly struck with a sliding lever. Less driving force is required, the power cord pull-out force is lightened, operability is improved, and the force applied to the mechanism part for linking the movement between parts is also reduced, so the durability of those parts Will improve. Furthermore, the distance L1 from the rotation center of the rotation lever to the portion where the contact portion and the projecting rib are in contact is greater than the distance L2 from the rotation center to the engagement portion between the rotation lever and the slide lever. By setting it small, the sliding distance of the sliding lever can be increased without increasing the height of the protruding rib, so that the dust collecting performance of the dust collecting bag can be improved.

  The electric vacuum cleaner of the present invention is easy to use and has excellent durability and dust removal performance by reducing the pulling power of the power cord.

  According to a first aspect of the present invention, there is provided an electric blower that generates suction air, a cord reel that winds and stores a power cord and has a protruding rib, a dust collecting bag that collects dust, and a substantially V-shaped protruding rib at one end. A rotating lever that has a contact portion that is in contact with the rotary lever, and a sliding lever that engages with the other end of the rotating lever and slides back and forth in conjunction with the rotating operation of the rotating lever. A movable lever, and a vibration plate having a rotation center on the lower side and rotating on the upper side by being hit by the other end of the sliding lever to apply vibration to the dust bag. A distance L1 from the center of rotation to the portion where the contact portion and the protruding rib contact, and a distance from the center of rotation of the rotating lever to the engaging portion of the rotating lever and the sliding lever The relationship with L2 is L1 <L2, and the conventional diaphragm is rotated. Compared with the method in which a large load is applied to the rotating part, the upper part of the rotatable diaphragm is directly hit by the sliding lever, so the driving force of the diaphragm can be reduced and the power cord can be pulled out. As a result, the operability is improved and the force applied to the mechanism portion for linking the operation between the components is also reduced, so that the durability of those portions is improved. Furthermore, the distance L1 from the rotation center of the rotation lever to the portion where the contact portion and the projecting rib are in contact is greater than the distance L2 from the rotation center to the engagement portion between the rotation lever and the slide lever. By setting it small, the sliding distance of the sliding lever can be increased without increasing the height of the protruding rib, so that the dust collecting performance of the dust collecting bag can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
A first embodiment of the present invention will be described with reference to FIGS.

  1 to 12, the cleaner body 1 is connected to an extension pipe 5 via a hand handle 2 and a hose 4 with a hose joint 3, and communicates with a suction tool 6 attached to the extension pipe 5 and sucking dust. ing. Moreover, the cleaner body 1 includes a caster 7 on the front bottom surface and a pair of rollers 8 on the rear side surface so as to be rotatable.

  In the vacuum cleaner main body 1, a lower case 9 and an upper case 10 constitute an outer shell, and the upper case 10 includes a handle portion 11 that is gripped when carried. An electric blower 12 is disposed on the rear side of the vacuum cleaner main body 1, and the electric blower 12 emits suction air. The front is supported by a front anti-vibration rubber 13 and the rear is provided with a rear anti-vibration rubber 14. And is supported by the motor case 15 and the motor cover 16 and is fixed to the lower case 9.

  A dust collection chamber 17 is formed on the front side of the cleaner body 1, and a dust collection lid 18 is provided above the dust collection chamber 17 so as to open and close the dust collection chamber 17. A dust collection bag 19 for collecting dust is detachably provided in the chamber 17.

  The dust collection lid 18 is provided with a storage portion 20 for storing attachments such as gap nozzles, and a storage lid 21 covering the storage portion 20 is pivotally supported so as to be freely opened and closed.

  A partition wall 23 that partitions the electric blower chamber 22 that houses the electric blower 12 and the dust collection chamber 17 is provided in the lower case 9, and a packing 24 is provided above the partition wall 23. Thus, air tightness is secured in the dust collection chamber 17 to ensure airtightness.

  A communication port 25 is provided in the partition wall 23 in front of the electric blower 12 so that the electric blower 12 and the dust collecting chamber 17 communicate with each other.

  Between the partition wall 23 and the dust bag 19, dust removing means 27 including a vibration plate 26 that strikes the dust bag 19 and applies vibration is provided.

  On the electric blower chamber 22 side, a cord winding device 30 including a cord reel 29 that winds and stores a power cord 28 that supplies electric power to the electric blower 12 is disposed, and when the power cord 28 is pulled out or The cord reel 29 is also rotated by the storage operation.

  The cord reel 29 is formed with a substantially circumferential rib body 31. The rib body 31 is connected to both ends of a plurality of projecting ribs 32 formed on the cord reel 29, and the cord reel 29 is disposed inside the outer periphery.

  A cord reel 29 of the cord winding device 30 is rotatably supported by a partition wall 33, and a brake lever 34 for stopping and releasing the rotation of the cord reel 29 is pivotally supported on the partition 33. It is supported.

  In the vicinity of the cord reel 29 on the opposite side separated by the brake lever 34 and the partition body 33, a rotating lever 35 having a substantially V-shaped outer shape and having a rotating shaft at substantially the same height as the brake lever 34 is rotated. It is pivotally supported. One end of the rotating lever 35 is provided with an abutting portion 36 that abuts against the protruding rib 32 formed on the cord reel 29 in a substantially arc shape, and the other end portion vibrates the diaphragm 26. A sliding operation portion 38 that slides the sliding lever 37 to be added back and forth is formed, and a contact release portion 39 that releases the contact with the protruding rib 32 is formed. The abutting portion 36 and the protruding rib 32 are configured to abut through the window portion 40 opened in the partition wall 33.

  The contact portion 36 is provided with a wear prevention body 41 made of a metal material such as a screw to prevent wear due to contact with the protruding rib 32.

  Further, a contact spring 42 that rotates and urges the rotation lever 35 in a direction in which the contact portion 36 contacts the rib body 31 or the protruding rib 32 is provided in the vicinity of the sliding operation portion 38.

  Above the brake lever 34 is provided with an operation portion 43 that is operated when the power cord 28 is wound up. The operation portion 43 is interlocked with the brake lever 34 and has a brake release portion 44 that releases the rotation restraint of the cord reel 29. It is formed and biased upward of the cleaner body 1 by the operation portion spring 45. Furthermore, a release rib 46 that enables the contact release portion 39 to be operated is formed on a part of the outer periphery of the operation portion 43.

  Further, the distance between the release rib 46 and the contact release portion 39 is configured at a position closer to the distance between the brake release portion 44 and the brake lever 34.

  The sliding lever 37 is formed with an engaging portion 47 that engages with a sliding operation portion 38 provided on the rotation lever 35 at one end in a shape that sandwiches the sliding operation portion 38 in the front and rear directions of operation, and at the other end. A vibration transmitting portion 48 that applies vibration to the diaphragm 26 is formed.

  The partition wall 23 is provided with an opening 49 through which the sliding lever 37 is passed, and the covering member 51 that covers the vibration transmitting portion 48 of the sliding lever 37 and that has a press-fit fixing portion 50 that press-fits the vibration transmitting portion 48 is formed. The opening 49 is held and fixed.

  The cover member 51 is formed of a soft material such as rubber by forming a flange-like convex portion 52 on the outer periphery and making the thickness of the press-fit fixing portion 50 thicker than the peripheral thickness.

  The partition wall 33 is formed with an inclination preventing rib 53 that prevents the sliding lever 37 from tilting during operation, and a cover body 54 that covers the window 40, the rotation lever 35, and the sliding lever 37 is held and fixed. .

  The cover body 54 forms a bearing portion that pivotally supports the rotation lever 35, similarly to the partition wall body 33, and holds a contact spring 42 that urges the rotation lever 35 to rotate. Further, in order to prevent the cover member 51 from coming off, a clamping portion 55 that clamps the cover member 51 between the partition wall 23 is formed. Further, the cover body 54 is surrounded by a holding rib 56 formed in the upper case 10.

  On the other hand, a holding frame 57 that pivotally supports the lower side of the diaphragm 26 is provided in front of the communication port 25 provided in the partition wall 23 in the dust collecting chamber 17, and is detachably set in an insertion portion 58 provided in the lower case 9. ing. A rotating shaft 59 of the diaphragm 26 is pivotally supported at a substantially central height position of the holding frame 57.

  A diaphragm operating unit 60 that receives vibration from the sliding lever 37 is provided on the upper part of the diaphragm 26, and a diaphragm spring that biases the diaphragm 26 toward the partition wall 23 on a substantially vertical line of the diaphragm operating unit 60. 61 is provided between the holding frame 57.

  In the present embodiment, the distance L1 from the rotation center 35a of the rotation lever 35 to the portion where the contact portion 36 and the projecting rib 32 are in contact, and the rotation lever 35 from the rotation center 35a of the rotation lever 35 The relationship between the distance L2 to the engaging portion 47 between the slider 35 and the sliding lever 37 is L1 <L2.

  The holding frame 57 is provided with an enclosure 62 that covers the cover member 51 and the diaphragm operating unit 60, and a regulating body 63 that restricts the movable range of the diaphragm 26 is formed at the upper end of the holding frame 57. The movable range is narrower than the movable range of the sliding lever 37.

  A plurality of dust removing portions 64 for vibrating the dust collecting bag 19 to remove dust are formed on the upper end of the diaphragm 26, and a wide surface is provided so as to come into contact with the surface. Further, when the dust collection bag 19 is vibrated, the dust removing unit 64 operates to a position protruding from the holding frame 57 to the outside. The dust removing portion 64 of the diaphragm 26 periodically oscillates between the position protruding from the holding frame 57 and the regulating body 63 by the periodic operation of the rotating lever 35 and the sliding lever 37.

  The diaphragm 26 or the holding frame 57 is formed with a hook portion 65 in which a finger or the like can be hooked at the time of removal in a lattice shape.

  About the vacuum cleaner comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  When the power cord 28 is pulled out, the protruding rib 32 formed on the cord reel 29 also rotates, and when the contact portion 36 rides on the protruding rib 32, the rotating lever 35 rotates and the sliding operation portion 38 is moved. The sliding operation part 38 pushes the engaging part 47 of the sliding lever 37 and the sliding lever 37 slides to the rear of the cleaner body 1. The press-fit fixing portion 50 of the covering member 51 moves rearward together with the slidable vibration transmitting portion 48, and the diaphragm 26 does not have the pressing force of the covering member 51 on the diaphragm operating portion 60. Tilt backwards.

  When the abutting portion 36 passes over the protruding rib 32, the rotating lever 35 rotates with an impact force and returns to the original position, so that the sliding lever 37 quickly slides forward together with the interlocking covering member 51. The covering member 51 strikes the diaphragm operating unit 60 of the diaphragm 26. Then, the diaphragm 26 moves toward the dust bag 19 with an impact force and can apply a large vibration to the dust bag 19, so that the dust attached to the inside of the dust bag 19 is efficiently collected. The dust collection performance can be improved by reducing the decrease in suction wind.

  As described above, according to the present embodiment, the sliding lever 37 directly strikes the upper part of the diaphragm 26 that is rotatable downward through the cover member 51, so that the force for driving the diaphragm 26 is small. As a result, the pull-out force of the power cord 28 is lightened, the operability is improved, and the force applied to the mechanism part for linking the operation between the parts is also reduced, so the durability of those parts is improved. To do.

  Further, the distance L1 from the rotation center 35a of the rotation lever 35 to the portion where the contact portion 36 and the protruding rib 32 are in contact is the relationship between the rotation center 35a and the rotation lever 35 and the slide lever 37. By setting the distance smaller than the distance L2 to the joint portion 47, the sliding distance of the sliding lever 37 can be increased without increasing the height of the protruding rib 32, so the dust collection performance of the dust bag 19 is improved. Can be made.

  Further, since the plurality of protruding ribs 32 are formed, vibration can be applied to the dust collection bag 19 by the vibration plate 26 a plurality of times when the power cord 28 is pulled out, so that the number of hits can be increased and the dust removal effect can be expanded. It will be a thing.

  Further, since the engaging portion 47 of the sliding lever 37 is shaped so as to sandwich the sliding operation portion 38 formed on the rotating lever 35 in the front-rear direction, the rotating operation of the rotating lever 35 can be smoothly converted into a horizontal operation. Since the operation of the sliding operation unit 38 can be smoothly interlocked, the dust adhering to and accumulating inside the dust bag 19 can be efficiently removed.

  Further, since the rotation lever 35 is pivotally supported in the vicinity of the cord reel 29, the dust removal operation can be transmitted in the shortest distance. As a result, the dust removing means 27 can be made compact, and the vacuum cleaner body can be reduced in size and weight.

  The rib body 31 formed on the cord reel 29 is formed in a shape connected to both ends of the projecting rib 32, and is disposed inside the outer periphery of the cord reel 29, and the contact portion 36 of the rotating lever 35 is substantially circular. Since it is formed in an arc shape, when the cord reel rotates, the operation of the contact portion 36 riding on the protruding rib 32 becomes smooth, and as a result, noise during dust removal can be reduced.

  Further, since the wear preventing body 41 for preventing wear is provided on the contact portion 36 with a metal material such as a screw, it is possible to prevent abrupt wear and to maintain a durable and comfortable cleaning.

  When the operation unit 43 is operated during winding of the power cord 28, the release rib 46 operates the contact release unit 39 of the rotation lever 35, and the rotation lever 35 rotates. Immediately after the contact portion 36 of the rotating lever 35 moves away to a position where it does not contact the projection rib 32, the brake release portion 44 operates the brake lever 34 to release the rotation restraint of the cord reel 29. Then, the power cord 28 is wound up. As a result, when the power cord 28 is wound, it can be smoothly wound without generating extra load or noise, and the usability can be improved.

  Since the release rib 46 formed on the operation unit 43 is formed on a part of the outer periphery of the operation unit 43, the release rib 46 can be formed in the same size as the conventional operation unit, and a vacuum cleaner by adding functions. The main body 1 can be prevented from being enlarged, and comfortable cleaning can be performed.

  In addition, as shown in FIG. 12, when it is desired to remove dust when the power cord 28 is not pulled out, when the operation unit 43 is pushed down, the release rib 46 contacts the contact release unit 39 formed on the rotary lever 35 and rotates. The lever 35 rotates, the sliding operation part 38 moves, the sliding operation part 38 pushes the engaging part 47 of the sliding lever 37, and the sliding lever 37 slides to the back of the cleaner body 1. The press-fit fixing portion 50 of the covering member 51 moves rearward together with the slidable vibration transmitting portion 48, and the diaphragm 26 has no pressing force of the covering member 51 on the diaphragm operating portion 60. Tilt backwards by force. Subsequently, when the hand is released from the operation portion 43, the contact of the release rib 46 with the contact release portion 39 is released by the elastic force of the operation portion spring 45, and the rotation lever 35 is elasticized by the contact spring 42. Therefore, the sliding lever 37 quickly slides forward together with the interlocking cover member 51 and collides with the diaphragm operating portion 60 of the diaphragm 26. Then, the diaphragm 26 moves toward the dust bag 19 with an impact force and can apply a large vibration to the dust bag 19, so that the dust bag 19 can be removed until it is satisfied as much as desired. Can be cleaned comfortably.

  Further, even if the sliding lever 37 operates between the electric blower chamber 22 and the dust collecting chamber 17 having a pressure difference, the covering member 51 covers the sliding lever 37 and forms a convex shape on the outer periphery. 23, the holding and fixing to the opening 49 formed in the partition wall 23 can be ensured, and even if an external force other than normal use is applied, the dust collecting chamber 17 is not detached or displaced. The inner airtightness is always ensured, and it can be smoothly transmitted to the diaphragm without obstructing the operation of the sliding lever 37. The cover member 51 is formed of a soft material such as rubber, covers the sliding lever 37, and is provided with a press-fit fixing portion 50 that is press-fitted and fixed to the sliding lever 37, so that the operation of the sliding lever 37 is not hindered. The dust can be smoothly transmitted to the diaphragm 26, and the dust deposited and deposited inside the dust bag 19 can be efficiently removed.

  Since the thickness of the front end portion of the covering member 51 that contacts the diaphragm 26 is formed to be thicker than the peripheral thickness, the sliding lever 37 is operated repeatedly so that the front end portion of the covering member 51 and the diaphragm 26 are moved. Even if the tip part is abutted to some extent and wears, the airtightness in the dust collecting chamber 17 can always be ensured because the tip part is not torn and no hole is formed.

  Since the rotation shaft 59 of the diaphragm 26 is pivotally supported at a substantially central height position of the holding frame 57, the torque required to vibrate the diaphragm 26 can be reduced, and the power cord 28 The pull-out force is lightened and the operability can be improved, and when the full dust bag 19 is taken out, the diaphragm 26 moves, so that it can be taken out without being caught.

  Since the holding frame 57 is provided with an enclosing portion 62 that covers the cover member 51 and the diaphragm operating portion 60, even if the dust bag 19 spreads with dust, the vibration does not hinder the operation of the diaphragm operating portion 60. The vibration of the plate 26 can be reliably applied to the dust bag 19.

  Since the movable range of the diaphragm operating unit 60 is narrower than the movable range of the sliding lever 37, even if the dust bag 19 spreads and the diaphragm 26 is pressed backward, the sliding lever can be pulled by the power cord 28 or the like. Since 37 slides in the front-rear direction, vibration can be applied to the diaphragm 26 and dust can be sucked in until the dust bag 19 is full.

  A plurality of dust removing portions 64 are formed on a wide surface so as to come into contact with the surface, and periodically swing between a position protruding from the holding frame 57 and the regulating body 63, so that dust can be effectively removed.

  The diaphragm 26 or the holding frame 57 is formed with a hook portion 65 that can be hooked with a finger or the like at the time of removal, so that the removal can be easily performed.

  Since the holding frame 57 is detachable from the lower case 9, when selling an inexpensive vacuum cleaner, etc., the model can be discriminated with or without the dust removal mechanism simply by attaching and replacing the holding frame 57 without the diaphragm 26 attached. Can be easily realized. Similarly, the model can be easily differentiated by simply removing the dust removing means such as the rotation lever 35.

  As described above, the vacuum cleaner according to the present invention reduces the drawing power of the power cord and is excellent in durability and dust removal performance, and is particularly useful for home and commercial vacuum cleaners. It is.

Whole perspective view of the electric vacuum cleaner in Embodiment 1 of this invention Central sectional view of the vacuum cleaner Overall perspective view of the vacuum cleaner without the dust cover Partial sectional view of the vacuum cleaner (A) The whole perspective view which removed the partition body and the cover body from the dust removal means of the vacuum cleaner, (b) The principal part side view of the dust removal means Right side view of the vacuum cleaner with the bulkhead and cover removed from the dust removal means Partial sectional view showing a part of the dust removing means of the vacuum cleaner Perspective view of parts around the operation part of the vacuum cleaner Left side view showing the state where the diaphragm of the vacuum cleaner is tilted most backward Left side view showing a state where the contact portion of the vacuum cleaner has completely ridden on the protruding rib Left side view showing a state in which the contact portion of the vacuum cleaner passes over the protruding rib Left side view when the operation part of the vacuum cleaner is pressed

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 12 Electric blower 19 Dust collection bag 26 Diaphragm 27 Dust removal means 28 Power cord 29 Cord reel 31 Rib body 32 Projection rib 34 Brake lever 35 Turning lever 36 Abutting part 37 Sliding lever 38 Sliding operation part 43 Operation part 47 Engagement part

Claims (1)

An electric blower that generates suction air, a cord reel that winds and stores a power cord and has a protruding rib, a dust collection bag that collects dust, and a contact portion that is substantially V-shaped and contacts the protruding rib at one end A rotating lever having one end engaged with the other end of the rotating lever, and a sliding lever that slides back and forth in conjunction with the rotating operation of the rotating lever. And a vibration plate that rotates when the upper end is struck by the other end of the sliding lever to apply vibration to the dust bag, and from the rotation center of the rotation lever, The relationship between the distance L1 between the contact portion and the projecting rib is in contact with the distance L2 from the rotation center of the rotation lever to the engagement portion between the rotation lever and the slide lever, A vacuum cleaner characterized by L1 <L2.

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