JP5287260B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner that can prevent a reduction in suction force even if dust accumulates in a dust collecting means.

In this type of conventional vacuum cleaner, an electric blower chamber with a built-in suction electric blower is provided at the rear of the vacuum cleaner main body, and a dust collection chamber with a dust bag is built in front of the vacuum cleaner main body. Is provided. In addition, a power cord for supplying power to the electric blower and a cord reel for winding the power cord are disposed on the electric blower chamber side, and dust removing means for removing dust adhering to the dust collecting bag It has. The dust removing means includes a vibration arm body and a vibration plate that vibrates the dust collection bag in conjunction with one end of the vibration arm body, and the other end of the vibration arm body is connected to the power cord. At the time of pulling out or at the time of storing the power cord, the vibrating plate engages and swings with the protruding rib formed on the rotating cord reel, and the vibrating plate swings in conjunction with the protruding rib. The cross section has a shape (see, for example, Patent Document 1).
JP 2006-192045 A

  However, in the above configuration, the cord reel is configured such that the dust removing means includes a configuration in which the vibration arm body is pivotally supported on the bottom surface portion of the cleaner body, and a configuration in which the vibration arm body and the protrusion rib of the cord reel are prevented from contacting Since it must be constructed over a wide range from the lower part to the dust collection chamber and the brake button, there has been a problem that the main body of the vacuum cleaner becomes large.

  In addition, vortex loss occurs on the downstream side of the lattice of the diaphragm, which reduces the suction performance.

  Furthermore, when a large amount of dust is sucked in and the dust bag is full, the intake air passage cannot be secured and the electric blower is overloaded.

  The present invention solves the above-mentioned problems, and reliably and effectively removes dust deposited and accumulated inside the dust bag, reduces the reduction of suction air, improves dust collection performance, and uses a diaphragm. The purpose is to reduce the vortex loss and improve the suction performance, and to reduce the size and weight of the vacuum cleaner body.

  It is another object of the present invention to secure an intake air passage so that the electric blower is not overloaded.

In order to solve the above-described conventional problems, the present invention provides an electric blower that generates suction air, a cord reel around which a power cord is wound, a dust collection bag that collects dust, and dust that adheres to the dust collection bag. Dust removing means, and the dust removing means houses at least a sliding lever that periodically slides in conjunction with the cord reel that rotates when the power cord is pulled out and / or stored. A grid that is arranged on the intake upstream side of a partition wall that partitions the electric blower chamber and the dust collection chamber that houses the dust collection bag, and that periodically operates in conjunction with the sliding lever to apply vibration to the dust collection bag The diaphragm of the diaphragm is composed of ribs extending in the longitudinal direction and ribs extending in the lateral direction or in the oblique direction, and at least the cross-sectional shape of the ribs extending in the longitudinal direction is an airfoil. And said The ribs extending in the direction are configured to protrude toward the dust bag rather than the ribs extending in the lateral direction or the oblique direction, and the length in the front-rear direction of the rib extending in the lateral direction or the oblique direction is The length of the rib extending in the longitudinal direction is shorter than the length in the front-rear direction, and the rear portion of the rib extending in the longitudinal direction is convex toward the electric blower side than the rear end of the rib extending in the lateral direction or oblique direction. one that is, it is possible to convey a large vibration to the dust bag, the result, since dust adhering to the dust bag can be reliably and efficiently dust, the dust adhered to the dust collection bag stacking By efficiently removing dust, reducing the reduction of suction wind and improving dust collection performance, among the ribs constituting the lattice of the diaphragm, by configuring the cross-sectional shape of at least the longitudinally extending ribs in a wing shape, Diaphragm lattice Can reduce vortex loss downstream, improve suction force, and the sliding lever does not rotate and does not rotate, eliminating the need for a rotating shaft configuration. Can be reduced in size and weight.

  The present invention can efficiently remove dust deposited and accumulated inside a dust collection bag, can reduce the reduction of suction air and improve dust collection performance, and can be reduced in size and weight. Can be provided.

1st invention is equipped with the electric blower which emits a suction wind, the cord reel which wound the power cord, the dust bag which collects dust, and the dust removal means which removes the dust adhering to the dust bag, The dust removing means includes at least a sliding lever that periodically slides in conjunction with the cord reel that rotates when the power cord is pulled out and / or stored, an electric blower chamber that houses the electric blower, and the collector A grid-like diaphragm that is arranged on the upstream side of the intake of the partition wall that partitions the dust collection chamber that houses the dust bag and that periodically operates in conjunction with the sliding lever to apply vibration to the dust collection bag. The diaphragm of the diaphragm is composed of ribs extending in the vertical direction and ribs extending in the horizontal direction or oblique direction, and at least the cross-sectional shape of the rib extending in the vertical direction is an airfoil , and the vertical direction The rib extending to the side The front and rear lengths of the ribs that are configured to protrude toward the dust bag rather than the ribs extending in the horizontal or diagonal direction, and the length in the front and rear direction of the ribs extending in the horizontal or diagonal direction extend in the vertical direction The rear portion of the rib extending in the longitudinal direction is shorter than the length in the direction, and is configured to protrude toward the electric blower side from the rear end of the rib extending in the lateral direction or the oblique direction. When the cord is stored or pulled out, the cord reel rotates, and the sliding lever periodically slides in conjunction with it, so that the sliding lever abuts against the diaphragm and gives vibration, and the vibrating diaphragm collects. The dust bag can be struck by applying a large vibration to the dust bag, so that the dust attached to the inside of the dust bag can be removed efficiently, reducing the drop in suction air and improving the dust collection performance. As well as shake By configuring the cross-sectional shape of at least the longitudinally extending rib in a wing shape among the ribs constituting the plate lattice, vortex loss downstream of the diaphragm lattice can be suppressed, the suction force can be improved, and sliding Since the lever only slides and does not rotate, there is no need for a rotating shaft configuration, so that the dust removing means can be made compact, and the vacuum cleaner body can be made smaller and lighter.

Further, in the first invention, the ribs extending in the vertical direction constituting the lattice of the diaphragm of the first invention are configured so as to protrude toward the dust bag rather than the ribs extending in the horizontal direction or the oblique direction. And the length of the rib extending in the lateral direction or the oblique direction is shorter than the length in the longitudinal direction of the rib extending in the longitudinal direction, and the rear part of the rib extending in the longitudinal direction extends in the lateral direction or the oblique direction It is constructed so as to protrude toward the electric blower side from the rear end, and even when a large amount of dust is sucked in and the dust bag is full, a passage for intake air can be secured, and the electric blower Since overload can be prevented and the flow of intake air is improved, stagnation is reduced and vortex loss can be further suppressed .

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.

  The vacuum cleaner main 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 that is attached to the extension pipe 5 and sucks dust. 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. On the rear side of the vacuum cleaner body 1 is an electric blower 12.
The electric blower 12 emits suction air and is supported by the front of the anti-vibration rubber 13 and supported by the motor case 15 and the motor cover 16 via the anti-vibration rubber rear 14. It is attached to the lower case 9 and fixed.

  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 that collects dust is detachably provided in 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 in the dust collecting chamber 17 is performed to ensure airtightness. Further, 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, there is provided dust removing means 27 having a lattice-like diaphragm 26 that strikes the dust bag 19 to give vibration. On the electric blower chamber 22 side, a cord winding device 30 including a cord reel 29 that can be wound and stored with a power cord 28 that supplies electric power to the electric blower 12 is disposed. The cord reel 29 is also rotated by the storage operation.

  A substantially circumferential rib body 31 is formed on the cord reel 29. A plurality of rib bodies 31 are formed in a shape connected to both ends of the projecting rib 32 formed on the cord reel 29, and the cord reel Arranged inside the outer periphery of the reel 29.

  The cord reel 29 of the cord winding device 30 is pivotally supported by a partition wall 33, and a pivot lever 34 that stops and releases the rotation of the cord reel 29 is pivotally supported by the partition 33. ing. The rotating lever 34 is provided with an abutting portion 35 that is in contact with the protruding rib 32 formed on the cord reel 29 in a substantially arc shape, and a sliding lever 36 that slides on the diaphragm 26 is slid. A contact release portion 38 that releases contact between the operation portion 37 and the protruding rib 32 is formed. The abutting portion 35 and the protruding rib 32 are configured to abut through a window portion 39 opened in the partition wall 33.

  The abutment portion 35 is provided with a wear prevention body 40 made of a metal material such as a screw for preventing wear due to contact with the protruding rib 32. Further, a contact spring 41 that biases the rotation lever 34 in a direction in which the contact portion 35 contacts the rib body 31 or the protruding rib 32 is provided in the vicinity of the sliding operation portion 37. Above the rotation lever 34 is provided with an operation portion 42 that is operated when winding the power cord 28, and the operation portion 42 is interlocked with the rotation lever 34 and a brake release portion that releases the rotation restraint of the cord reel 29. 43 is formed and is urged above the cleaner body 1 by the operation portion spring 44.

  The sliding lever 36 has a contact portion 45 that contacts a sliding operation portion 37 provided on the rotating lever 34 at one end, and a vibration transmission portion 46 that applies vibration to the diaphragm 26 at the other end. In the vicinity of the contact portion 45, a contact spring 47 that biases the sliding lever 36 in the direction of the vibration transmitting portion 46 is provided. The partition wall 23 is provided with an opening 48 through which the sliding lever 36 passes, and the sliding lever 36 is provided with an engaging groove 49, and the cover member 51 having the engaging portion 50 is formed in the engaging groove 49 and the opening 48. Holding and fixing. The cover member 51 has a flange-like convex portion 52 formed on the outer periphery, and is made of a soft material such as rubber.

  The partition wall 33 is formed with an inclination preventing rib 53 that prevents the sliding lever 36 from tilting during operation, and a cover body 54 that covers the rotating lever 34 and the sliding lever 36 is held and fixed. The cover body 54 forms a bearing portion that pivotally supports the rotation lever 34, similarly to the partition wall body 33, holds the contact spring 41 that urges the rotation lever 34, and biases the sliding lever 36. The abutting spring 47 is held. Further, the cover body 54 is surrounded by a holding rib 55 formed in the upper case 10.

  On the other hand, an insertion portion 56 that pivotally supports the diaphragm 26 is provided from the case 9 in front of the communication port 25 provided in the partition wall 23 in the dust collecting chamber 17, and the vibration inserted from the opening 48 provided in the partition wall 23. It is set in the transmission unit 46.

  The diaphragm 26 is provided with a diaphragm operating portion 57 that receives vibration from the sliding lever 36 and can be detachably engaged. The abutting portion 35 formed on the rotating lever 34, the sliding lever 36, and the diaphragm operating portion 57 formed on the diaphragm 26 are arranged on a substantially straight line.

  The lattice of the diaphragm 26 includes ribs 101 extending in the vertical direction and ribs 102 extending in the oblique direction, and at least the cross-sectional shape of the ribs 101 extending in the vertical direction is formed in a wing shape. The diaphragm 26 is formed with a recess 59 that can be hooked with a finger or the like when removed.

  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. When the contact portion 35 rides on the protruding rib 32, the rotating lever 34 rotates and the sliding operation portion 37 moves. Then, the sliding operation part 37 pushes the contact part 35 of the sliding lever 36, and the sliding lever 36 slides to the rear of the cleaner body 1. The diaphragm 26 engaged with the slid vibration transmission portion 46 is inclined rearward of the cleaner body 1.

  When the contact portion 35 passes over the protruding rib 32, the rotation lever 34 rotates with an impact force. When the contact portion 35 returns to the original position, the pressing force of the rotation lever 34 disappears, so the slide lever 36 contacts. The diaphragm 26 is quickly slid by the urging force of the spring 47, and in conjunction with it, the diaphragm 26 moves toward the dust bag 19 with an impact force and can apply a large vibration to the dust bag 19. Dust adhering to and accumulating inside the bag 19 can be efficiently removed, and the dust collection performance can be improved by reducing the decrease in suction air.

  Further, since a plurality of contact portions 35 are formed, the diaphragm 26 can apply vibration to the dust collection bag 19 a plurality of times when the power cord 28 is pulled out, so that the number of hits is increased and the dust removal effect is increased. It becomes something that can be planned.

  Since the abutting portion 35 of the sliding lever 36 is shaped to abut the sliding operation portion 37 formed on the rotating lever 34 in the backward direction, the rotating operation of the rotating lever 34 can be smoothly converted into a horizontal operation, Since it can be smoothly interlocked with the operation of the sliding operation unit 37, the dust adhered and accumulated inside the dust bag 19 can be efficiently removed.

  The rotating lever 34 is pivotally supported in the vicinity of the cord reel 29, and an abutting portion 35 formed on the rotating lever 34, a sliding lever 36, and a diaphragm operating portion 57 formed on the diaphragm 26 are substantially configured. Since it arrange | positions on the straight line, dust removal operation | movement can be transmitted in the shortest distance. As a result, the dust removing means 27 can be configured in a compact manner, and the vacuum cleaner body 1 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, is disposed inside the outer periphery of the cord reel 29, and the contact portion 35 of the rotating lever 34 is substantially circular. Since it is formed in an arc shape, when the cord reel 29 rotates, the operation of the abutment portion riding on the protruding rib 32 is smooth, and as a result, noise during dust removal can be reduced.

  In addition, since the wear preventing body 40 for preventing wear is provided on the contact portion 35 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 42 is operated during winding of the power cord 28, the brake release unit 43 operates the contact release unit 38 of the rotation lever 34, and the rotation lever 34 rotates. Immediately after the abutting portion 35 of the rotating lever 34 moves away to a position where it does not abut against the protruding rib 32, the rotation of the cord reel 29 is released and 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 brake release part 43 formed in the operation part 42 is formed inside the operation part 42, it can be formed in the same size as the conventional operation part 42, and the main body is enlarged by adding functions. Can be prevented and comfortable cleaning can be performed.

  Also, 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 42 is pushed down, the brake release unit 43 comes into contact with the contact release unit 38 formed on the rotating lever 34 and rotates. The moving lever 34 rotates, the sliding operation part 37 moves, the sliding operation part 37 pushes the contact part 35 of the sliding lever 36, and the sliding lever 36 slides to the back of the cleaner body 1. The diaphragm 26 engaged with the slid vibration transmission portion 46 is inclined rearward of the cleaner body 1. Subsequently, when the hand is released from the operation unit 42, the contact of the brake release unit 43 with the contact release unit 38 is released by the elastic force of the operation unit spring 44, and the rotation lever 34 is elasticized by the contact spring 41. When it rotates with an impact force and returns to its original position, the pressing force of the rotating lever 34 disappears. Therefore, the sliding lever 36 slides quickly by the biasing force of the contact spring 47 and interlocks. Since the diaphragm 26 moves toward the dust bag 19 with an impact force and can apply a large vibration to the dust bag 19, the dust bag 19 can be removed until it is satisfied as much as desired. Can do a comfortable cleaning.

  Even if the sliding lever 36 operates between the electric blower chamber 22 and the dust collecting chamber 17 having a pressure difference, the covering member 51 covers the engaging groove 49 of the sliding lever 36 and forms a convex portion 52 shape on the outer periphery. And since it is held by the partition wall 23, it can be securely held and fixed to the opening 48 formed in the partition wall 23, and even if an external force other than normal use is applied, it will not come off or be displaced. The airtightness in the dust collection chamber 17 is always ensured and can be smoothly transmitted to the diaphragm 26 without hindering the operation of the sliding lever 36.

  Since the covering member 51 is formed of a soft material such as rubber and is engaged with the engaging groove 49 of the sliding lever 36, the covering member 51 can be smoothly transmitted to the diaphragm 26 without hindering the operation of the sliding lever 36. The dust deposited and deposited inside the dust bag 19 can be efficiently removed.

  Since the movable range of the diaphragm operating portion 57 is narrower than the movable range of the sliding lever 36, even if the dust bag 19 spreads out and the diaphragm 26 is pressed backward, the sliding lever can be pulled by the power cord 28 or the like. Since 36 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.

  Since the cross-sectional shape of the rib constituting the diaphragm 26 is formed in a wing shape, vortex loss does not occur during suction, and a strong suction force can be realized.

  Further, by configuring the lattice ribs of the diaphragm 26 to be inclined toward the center of the electric blower, the suction air can be smoothly flowed to the suction port of the electric blower 12, so that a strong suction force can be realized.

  The lattice of the diaphragm 26 is configured such that the lattice in the vertical direction protrudes toward the dust bag 19 side than the lattice in the left-right direction, and the width in the front-rear direction of the left-right lattice of the diaphragm 26 is The rear end of the vertical lattice is shorter than the width in the front-rear direction, and the rear end of the left-right lattice is more convex toward the electric blower, so that the diaphragm 26 of the dust collection bag 19 is removed when the dust collection bag 19 is taken out. The suction air flow path can be secured even when the dust bag 19 is stuck to the diaphragm, and the overload to the electric blower 12 can be prevented.

  The diaphragm 26 is formed with a concave portion 59 that can be hooked with a finger or the like at the time of removal.

  Since the diaphragm 26 is detachable from the lower case 9, the model can be easily differentiated with or without a dust removing mechanism without attaching the diaphragm 26 when selling an inexpensive vacuum cleaner. Similarly, the model can be easily differentiated by simply removing the dust removing means such as the sliding lever 36.

  In the present embodiment, the ribs forming the lattice of the diaphragm are composed of the ribs extending in the vertical direction and the ribs extending in the oblique direction, but are composed of the ribs extending in the vertical direction and the ribs extending in the horizontal direction. Even if there is no problem.

  As described above, the vacuum cleaner according to the present invention can effectively remove dust deposited and accumulated inside the dust collection bag, and can reduce the reduction in suction air and improve the dust collection performance. Since it can be reduced in size and weight, it is particularly useful for vacuum cleaners for home use and business use.

Whole perspective view of the electric vacuum cleaner which shows 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 The whole perspective view which removed the partition body and the cover body from the dust removal means of the vacuum cleaner 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 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

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner body 12 Electric blower 19 Dust collection bag 26 Diaphragm 27 Dust removal means 28 Power cord 29 Cord reel 36 Sliding lever 59 Recess

Claims (1)

An electric blower that emits suction air, a cord reel around which a power cord is wound, a dust collection bag that collects dust, and a dust removal means that removes dust attached to the dust collection bag, and the dust removal means includes at least A sliding lever that periodically slides in conjunction with the cord reel that rotates when the power cord is pulled out and / or stored, an electric blower chamber that houses the electric blower, and a dust collection bag that houses the dust bag. A grid-like diaphragm disposed on the intake upstream side of the partition wall that partitions the dust chamber, periodically operating in conjunction with the sliding lever, and applying vibration to the dust collection bag, grating, and ribs extending in the longitudinal direction, is composed of a rib extending in the transverse direction or an oblique direction, and the ribs of the cross-sectional shape extending at least in the longitudinal direction and airfoil, ribs extending in the longitudinal direction the transverse Direction or diagonal The length of the rib extending in the longitudinal direction is the length in the front-rear direction of the rib extending in the longitudinal direction. The vacuum cleaner is configured such that the rear portion of the rib extending in the vertical direction is shorter than the rear end of the rib and extends toward the electric blower than the rear end of the rib extending in the horizontal direction or the oblique direction .

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