JP4726718B2 - Vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner, and more particularly to a vacuum cleaner capable of preventing a reduction in suction force due to clogging of a filter.

  A conventional vacuum cleaner is strongly adhered to the surface of the dust bag facing the air intake part of the electric blower by hitting the surface of the dust bag facing the partition wall of the vacuum cleaner body with a vibrator that vibrates under the control of the control means. In some cases, dust that has been removed is removed to prevent a reduction in suction force (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 5-91962 (page 2-3, FIG. 1)

  The vacuum cleaner described in Patent Document 1 has a structure in which the dust collection chamber in which the dust collection bag is installed and the electric blower chamber in which the electric blower is housed are sealed, so that the suction force is also low. There was a problem of being lowered.

  The present invention has been made to solve the above problems, and provides a vacuum cleaner capable of preventing a decrease in suction force by automatically removing dust from a filter of a dust collection case. It is intended.

The electric vacuum cleaner according to the present invention has a dust collection case accommodating portion in which a dust collection case is detachably accommodated on the upstream side of a partition wall provided with a ventilation hole, and an electric blower is provided on the downstream side of the partition wall. A vacuum cleaner body to which the hose assembly is connected,
A filter attached to the downstream opening of the dust collecting case and provided with a belt-like portion in the lateral direction of the downstream surface;
A latch that has a rectangular frame with a wide upper part, a support part on both sides of the frame, a through hole in the wide part, and a latch that engages with the vent of the partition wall on the downstream side A diaphragm case detachably mounted on the upstream side of the ventilation opening of the partition wall by providing a piece ;
One end in the vertical direction is pivotally supported by the diaphragm case, and a diaphragm provided with a protrusion corresponding to a band-like portion provided on the filter on the upstream side of the other end;
The vibration plate is vibrated so that the protruding portion collides with a band-like portion of the filter, and a power transmission unit is provided that transmits the vibration to the filter.

  According to the present invention, the protrusion provided on the diaphragm that vibrates at a high speed by the power transmission unit is caused to collide with the band of the filter provided in the downstream opening of the dust collecting case, and the filter member is vibrated to cause this. Since dust or the like adhering to the surface is peeled off and dropped, it is possible to reliably prevent a reduction in suction force due to clogging of the filter.

FIG. 2 is a perspective view showing the overall configuration of the electric vacuum cleaner according to the present invention.
A hose connector provided at one end of the hose 201 of the hose assembly 200 is provided in the suction port 4 provided on the front side (left side in the drawing) of the cleaner body 1 in which a dust collection case described later is housed and an electric blower is incorporated. 202 is detachably connected, and a hand handle 203 having an operation unit 204 such as a power switch and an operation switch is provided at the other end of the hose 201. A floor suction tool 206 is detachably connected to the other end of the extension pipe 205 whose one end is detachably connected to the hand handle 203. In addition, 21 is a caster provided on the bottom front side of the cleaner body 1, 22 is a pair of rear wheels provided on both side surfaces on the rear side, and 23 is a take-up reel (not shown) built in the cleaner body 1. It is a power cord wound around.

[Embodiment 1]
1 is a cross-sectional view of a vacuum cleaner body of a vacuum cleaner according to Embodiment 1 of the present invention.
On the front side 1 of the vacuum cleaner main body 1 (in the following description, the left side of the figure is referred to as the front side or the upstream side, and the right side is referred to as the rear side or the downstream side), the dust collection case 30 described later is accommodated. The case housing portion 2 is provided, and the front wall 3 rising from the bottom plate is provided with a vent hole 5 communicating with the suction port 4 to which the hose connector 202 of the hose 201 is detachably connected. A seal packing 6 is attached to the inner peripheral edge of the vent hole 5.

Reference numeral 7 denotes a rear wall (hereinafter referred to as a partition wall) of the dust collection case housing portion 2 provided with a lattice-shaped vent 72, which has a diaphragm 11 on the front side and a filter on the rear side. The diaphragm case 10 is detachably mounted. Reference numeral 12 denotes a power transmission portion to the diaphragm 11 provided at the upper part on the rear surface side of the partition wall 7.
Reference numeral 13 denotes an electric motor chamber provided on the downstream side of the partition wall 7, in which the electric blower 14 that generates suction air is accommodated, and the air suction portion 15 communicates with the vent 72 of the partition wall 7.

  Reference numeral 16 denotes a control unit provided at the upper portion of the motor chamber 13, and is connected to the operation unit 204 of the hand handle 203 of the hose assembly 200. Reference numeral 17 denotes an exhaust port provided in the upper portion of the rear wall of the cleaner body 1, and 18 denotes an opening / closing lid that is pivotally supported on the upper portion of the cleaner body 1 and opens and closes the upper opening of the dust collecting case housing 2. Is a handle, and 20 is a locking means for the opening / closing lid 18 and the dust collecting case 30.

FIG. 3 is a perspective view of the vent 72 provided in the partition wall 7, the diaphragm case 10, and the diaphragm 11 attached to the diaphragm case 10.
A rectangular recess 71 is formed on the front side of the partition wall 7, and the recess 71 is provided with a circular vent 72 formed in a lattice shape. 73 is a first locking portion formed at the lower portion of the vent 72, 74 is a second locking portion provided at the upper portion of the vent 72, and 75 is a recess 76 formed at the center. A rod body 127 of a power transmission unit 12 described later is a deformable elastic body such as a rubber packing that is attached to a through hole (not shown) provided in the upper portion of the lower surface of the concave portion 76 (see FIG. 5). ).

  The diaphragm case 10 is formed of a resin molded product and has a substantially rectangular shape that is fitted into the recess 71 of the partition wall 7. The upper part of the diaphragm case 10 has a wide frame 101, and the frame body 101 is combined vertically and horizontally. A lattice portion 102 is formed. Further, most of the upper edge portion and the left and right edge portions on the front surface side of the frame body 101 are formed with a protrusion edge 103 protruding to the front surface side, and the protrusion 103 has a substantially intermediate portion in the vertical direction of the frame body 101. Are provided with support portions 104 a and 104 b having fitting holes 105.

  Reference numeral 106 denotes a through hole provided in the upper wide portion of the frame body 101 corresponding to the elastic body 75 of the partition wall 7. Reference numeral 107 denotes a first protrusion provided on the lower surface of the frame body 101 and provided in the ventilation port 72 of the partition wall 7. It is the 1st latching piece latched to the latching | locking part 73 of this. Reference numeral 108 denotes a second locking piece that protrudes from the rear surface side at a substantially central portion in the left-right direction of the wide portion, and locks to a second locking portion 74 provided at the vent 72 of the partition wall 7. It is a finger hook part which hooks a finger when attaching or detaching. Although not shown, a filter member is mounted on the back side of the diaphragm case 10.

  The diaphragm 11 is made of a resin molded product and has a rectangular frame 111 inserted into the inside of the protruding edge 103 of the diaphragm case 10 at a height that is approximately one half of the diaphragm case 10. On the inner side, a lattice portion 112 combined vertically and horizontally is formed. Reference numerals 113a and 113b denote support shafts that project outward from the lower portion of the side wall of the frame body 111, and are rotatably fitted into the fitting holes 105 of the support portions 104a and 104b of the diaphragm case 10. Reference numeral 114 denotes a pin that protrudes from the rear side of the upper wide portion and is inserted into the through hole 106 of the diaphragm case 10. 115a and 115b are protrusions provided on the front side of the upper wide portion of the frame body 111 in the lateral direction on both sides of the finger hook 116, and the front side is formed with, for example, a corrugated uneven surface.

  As shown in FIG. 4, the diaphragm 11 configured as described above is inserted into the projecting edge 103 of the diaphragm case 10 with the projecting portions 115a and 115b on the front side, and supported by the support shafts 113a and 113b. It fits in the fitting hole 105 of the parts 104a and 104b, and the pin 114 is inserted into the through hole 106 and supported. In order to prevent the vibration plate 11 from coming off, an anti-separation means such as a protrusion may be provided on the front side of the inner wall of the protruding edge 103.

  The diaphragm case 10 to which the diaphragm 11 is attached in this way is inserted into the recess 71 of the partition wall 7 with the diaphragm 11 as the front side, and the first locking piece 107 is connected to the first locking portion. The second locking piece 108 is locked to the second locking portion 74 and is mounted on the front side of the vent 72. At this time, the pin 114 of the diaphragm 11 abuts on the recess 76 of the elastic body 75 provided in the partition wall 7 so that the pin 114 can be slightly rotated back and forth about the support shafts 113a and 113b. .

Next, the power transmission unit 12 will be described with reference to FIGS.
The power transmission unit 12 is housed in a case 121 attached to the rear surface side of the partition wall 7, a DC motor 122 connected to the control unit 16, and an eccentric cam 124 connected to a rotating shaft 123 of the DC motor 122. And a cam interlocking portion 126 provided on the outer periphery of the eccentric cam 124, and a piston 125 having a cylindrical rod body 127, and a piston 125 having a cylindrical rod body 127. The piston 125 is a bearing provided in the case 121. 128 is supported so as to be slidable in the horizontal direction (front-rear direction), and the tip of the rod 127 abuts against the bottom of the recess 76 of the elastic body 75 provided in the partition wall 7.

  In the power transmission unit 12 configured as described above, when a DC voltage is applied to the DC motor 122 and rotates, the eccentric cam 124 connected to the rotating shaft 123 rotates. Now, as shown in FIG. 5B, when the eccentric cam 124 is eccentric to the left (front side) in the figure, the piston 125 slidably contacting the piston 125 is driven by the eccentric cam 124 and moves to the left in the figure. The elastic body 75 is deformed into a convex shape by being pushed by the rod body 127, and the pin 114 of the diaphragm 11 in contact therewith moves in the arrow direction (front side). Accordingly, the vibration plate 11 is pivoted (displaced) on the front side with the support shafts 113a and 113b as axes, and the projecting portions 115a and 115b of the second filter 140 of the dust collecting case 30 described later. Collides with the belt-like portion 146

Next, as shown in FIG. 5A, when the eccentric cam 124 is eccentric to the right (rear side) in the figure, the piston 125 is also moved to the right by being driven by this. Thereby, the diaphragm 11 returns to the original position by the reaction force colliding with the belt-like portion 146 of the second filter 140 of the dust collecting case 30, and the elastic body 75 is pushed by the pin 114 and again shown in FIG. Return to the state.
By repeating such an operation, the upper portion of the diaphragm 11 is displaced back and forth at a high speed and vibrates, and collides with the belt-like portion 146 of the filter 140 of the dust collecting case 30. The power transmission unit 12 is not limited to the above-described configuration, and may have another structure as long as the diaphragm 11 generates vibration.

  As shown in FIG. 7, the dust collection case 30 has a suction hole 32 communicating with the suction port 4 through the vent hole 5 on the front side, and the rear side is opened (hereinafter referred to as an opening 33). The plate is formed in a box shape inclined to the front side, and includes a main body portion 31 provided with a hand 34 on the top plate, and a filter assembly 130 that opens and closes the opening 33 of the main body portion 31.

  As shown in FIG. 8, the filter assembly 130 includes a plurality of filters 131, 140, and 160 (three cases are shown in the figure). The filter 131 located on the upstream side has a peripheral wall having a wide upper portion and a narrow lower portion, a seal packing 133 interposed on the outer periphery of the upstream side, and a frame body 132 that comes into contact with the outer periphery of the main body 31. The hinge shaft 135 of the hinge arms 135a and 135b provided at the lower portion is formed in a hinge hole (not shown) of the hinge receiver 35 provided at the bottom of the main body 31. It is designed to be fitted from the inside.

  The second filter 140 has a flange 142 that contacts the frame 132 of the first filter 131 on the outer periphery and a comb-shaped portion 144 formed on the upper surface, and is inserted into the frame 132 of the first filter 131. A pleated filter member 145 is mounted in the frame portion 143 and the outer periphery thereof is integrally joined to the frame portion 143.

  And the upper part of the downstream side of the filter member 145 of the second filter 140 (this position is the diaphragm 11 provided in the ventilation port 72 of the partition wall 7 when the dust collection case 30 is accommodated in the dust collection case accommodation portion 2. 9 is provided with a belt-like portion 146 made of a resin molded product over the entire length in the lateral direction, as shown in FIG. 9, and this belt-like portion 146 is formed as shown in FIG. In addition, the comb teeth 148 of the comb-like member formed on the corrugated uneven surface 147 on the downstream side are integrally formed on the pleats of the pleated filter member 145, for example.

  In addition, locking portions 150a and 150b for locking to the lock portion 36 of the main body portion 31 are provided on the upper portion of the flange portion 142, and hinge arms 151a and 151b are provided on the lower portion of the flange portion 142. The hinge shaft 152 is adapted to be fitted from the outside into the hinge hole of the hinge receiver 35 provided at the bottom of the main body 31. In addition, packings 153 are attached to both surfaces of the flange portion 142 so as to be in close contact with the partition wall 7 and seal between the dust collection case housing portion 2 and the motor chamber 13.

The third filter 160 is obtained by mounting a plate-like filter member 162 on a frame body 161 having a size corresponding to the frame portion 143 of the second filter 140, and a lower portion thereof is the frame portion 143 of the second filter 140. It is attached to be freely rotatable.
The filter assembly 130 configured as described above is rotatably attached to the bottom of the dust collecting case 30 via a hinge portion, and is provided on the second filter 140 by rotating upward about the hinge portion. By locking the locking portions 150 a and 150 b to the lock portion 36 of the main body portion 31, the opening 33 of the main body portion 31 is hermetically closed.

  The filter assembly 130 detachably attached to the opening 33 of the dust collection case 30 has been described above, but the structure of each of the plurality of filters constituting the filter assembly 130 is not limited to this, You may comprise 2 or 4 or more filters. Further, it may be configured by a single filter, and the point is that the band-like portion 146 may be provided at the position facing the projecting portions 150a and 150b of the diaphragm 11 on the downstream side (in other embodiments). Is the same).

Next, the operation of the present embodiment configured as described above will be described.
First, the opening / closing lid 18 is opened, and the diaphragm case 10 to which the diaphragm 11 is attached is inserted from above the dust collection case housing portion 2 and mounted on the upstream side of the ventilation port 72 of the partition wall 7. At this time, the pin 114 of the diaphragm 11 contacts the elastic body 75 provided on the partition wall 7. Next, the dust collecting case 30 whose opening 33 is closed by the filter assembly 130 is inserted into the dust collecting case housing part 2 from above and is pressed down, and the open / close lid 18 is closed. At this time, the belt-like portion 146 of the second filter 140 provided on the most downstream side of the filter assembly 130 faces the protruding portions 115 a and 115 b of the diaphragm 11.

Next, the hose connector 202 of the hose 201 is connected to the suction port 4 of the cleaner body 1 and the power cord 23 is connected to an outlet. Next, the power switch of the operation unit 204 of the hand handle 203 is turned on to drive the electric blower 14.
Then, if the suction tool 206 is moved onto the floor or the like by holding the hand handle 203, the dust or the like on the floor or the like is sucked together with the air, and passes through the hose assembly 200 into the dust collecting case 30 from the suction port 4. Sucked.

  Dust and the like sucked in the dust collection case 30 are collected in the dust collection case 30, and the dust-containing air is supplied to the first, third, and second filters 131, 140, and 160 of the filter assembly 130. The filter is cleaned by the filter of the diaphragm case 10, sucked into the motor chamber 13 to cool the electric blower 14, and then the controller 16 is cooled and then exhausted from the exhaust port 17. At this time, a part of dust or the like adheres to each filter member 134, 162, 145 of the filter assembly 130.

In the present embodiment, after the cleaning is completed, when the switch off of the operation unit 204 is further pressed, a DC voltage is applied to the DC motor 122 of the power transmission unit 12 via the control unit 16, as described above. The power transmission unit 12 is driven.
As the eccentric cam 124 of the power transmission unit 12 rotates, the pin 114 of the diaphragm 11 moves back and forth intermittently at a high speed, and as a result, the diaphragm 11 is centered on the support shafts 113a and 113b. Vibrates back and forth. The vibration of the diaphragm 11 is transmitted to the filter member 145 of the second filter 140 via the belt-like portion 146 provided in the second filter 140 with which the projecting portions 115a and 115b collide, and vibrates the filter member 145. .

Now, the rotational speed of the DC motor 122 of the power transmission unit 12 is set to 6000 r. p. m. Then, the diaphragm 11 vibrates 6000 times per minute and is transmitted to the filter member 145 of the second filter 140 to vibrate the second filter 140 to remove dust or the like adhering to the pleated filter member 145. Peel and efficiently drop to the bottom of the dust collecting case 30. In addition, this vibration is also propagated to the third and first filters 160 and 131, and dust and the like adhering to the filter members 162 and 134 are dropped.
By performing such an operation for 2 to 10 seconds, for example, dust and the like attached to the filter can be efficiently removed.

Since the present embodiment is configured as described above, dust or the like attached to the filter provided in the opening 33 of the dust collecting case 30 can be peeled off and removed without touching the filter. Thus, it is possible to reliably prevent a reduction in suction force due to clogging of the filter.
In addition, since the opposed surfaces of the protruding portions 115a and 115b provided on the diaphragm 11 and the band-shaped portion 146 provided on the filter with which the diaphragm collides are formed by, for example, a corrugated uneven surface 147, the front and rear, left and right of the protruding portions 115a and 115b are formed. Since the vibration can be reliably transmitted to the belt-like portion 146 of the filter to vibrate the filter, dust and the like firmly attached to the filter can be efficiently dropped and removed.

  Further, by providing the comb-like band-shaped portion 146 into which the comb teeth 148 are inserted between the pleats on the downstream side of the pleated filter, the shape of the filter can be maintained, so that the strength of the filter is improved. And pressure loss can be reduced. Furthermore, dust retention can be prevented by maintaining the pleated shape of the filter.

[Embodiment 2]
FIGS. 11-15 is explanatory drawing of the filter of the downstream of the 1 or several filter which concerns on Embodiment 2 with which the opening part of the dust collection case of the vacuum cleaner which concerns on this invention is mounted | worn. The same parts as those of the second filter according to the first embodiment are denoted by the same reference numerals.

  A filter 140 in FIG. 11 has a frame body 141 having a flange 142 on the outer periphery and a comb-shaped portion formed on the upper surface thereof, and is inserted into the frame body 141 in substantially the same manner as the second filter 140 in the first embodiment. And a pleated filter member 145 whose periphery is joined to the frame portion 143. A predetermined gap is separated from the upper side of the frame 141, and the downstream side is, for example, a corrugated uneven surface 147 as shown in FIG. The formed comb-shaped belt-shaped portion 146 is formed by integrally forming the comb teeth 148 on the pleats of the pleated filter member 145. A packing 153 is attached to the collar 142.

  According to the filter 140 configured as described above, since the band-shaped portion 146 is provided with a predetermined gap from the upper side of the frame body 141, when the projections 115a and 115b provided on the diaphragm 11 collide, the pleats are provided. The filter member 145 having a shape becomes easier to vibrate, and the dust removal effect can be further improved.

The filter 140 in FIG. 12 has substantially the same configuration as the filter 140 in FIG. 11, but a plurality of ribs 146a are further provided on the upper edge of the belt-like portion 146, and the ribs 146a are integrally applied to the upper side of the frame 141. It is in contact. In this case, the upstream side (the back side in the figure) of the rib 146a may be formed in a wedge shape and inserted between the pleats of the pleated filter member 145.
According to the filter 140 configured as described above, since the belt-like portion 146 and the upper side of the frame body 141 are connected by the rib 146a, the pleated filter member 145 is more easily vibrated by the vibration transmitted from the diaphragm 11. In addition, since the vibration is transmitted to the frame body 141 through the rib 146a, the entire filter 140 can be vibrated more effectively.

The filter 140 in FIG. 13 has substantially the same configuration as the filter 140 in FIG. 11, but in this example, the band-shaped portion 146 is provided at the substantially central portion in the vertical direction of the pleated filter member 145.
According to the filter 140 configured as described above, since the band-shaped portion 146 is provided at the substantially central portion in the vertical direction of the filter member 145, the vibration of the diaphragm 11 can be transmitted substantially evenly above and below the filter member 145. Therefore, the dust removal effect can be further improved.

The filter 140 in FIG. 14 has substantially the same configuration as the filter 140 in FIG. 11, but in this example, the band-shaped portion 146 is provided below the central portion in the vertical direction of the pleated filter member 145. .
According to the filter 140 configured as described above, since the belt-shaped portion 146 is provided below the central portion in the vertical direction of the filter member 145, it adheres to the lower portion of the filter member 145 due to vibration transmitted from the diaphragm 11. Since the dust can be peeled off without solidifying with the dust accumulated in the lower part of the dust collecting case 30, it is possible to improve dust disposal.

  The filter 140 in FIG. 15 has substantially the same configuration as the filter 140 in FIG. 11, but in this example, the belt-like portion 146 is provided at substantially the center in the vertical direction of the pleated filter member 145 and its upper and lower edges. Each is provided with a plurality of ribs 146a, and the ribs 146a are integrally brought into contact with the upper side and the lower side of the frame body 141, respectively. The ribs 146a may be provided on the same upper and lower lines, or may be provided alternately on the upper and lower sides. In this case, the upstream side of the rib 146a may be formed in a wedge shape and inserted between the pleats of the pleated filter member 145.

  According to the filter 140 configured as described above, since the upper and lower sides of the belt-like portion 146 and the frame body 141 are in contact with each other by the rib 146a, the vibration from the diaphragm 11 is transmitted to the entire filter member 145 and the frame body 141. Therefore, it is possible to improve the effect of dust removal.

  In the present embodiment as described above, since the attachment position of the band-shaped portion 146 to the filter member 145 is variously changed, the protrusions 115a and 115b of the diaphragm 11 for transmitting vibration to the filter member 145 are formed in the band-shaped manner. It is necessary to change corresponding to the position of the part 146.

  In particular, in the case of FIGS. 13 and 15, the belt-like portion 146 is provided at the substantially central portion in the vertical direction of the filter 140. Support portions 104a and 104b are provided at the lower end of the body 101, and support shafts 113a and 113b are supported by the support portions 104a and 104b, or support shafts 113a and 113b are provided above the frame body 111 of the diaphragm 11. Protruding portions 115a and 115b are provided on the front side at the bottom, and are supported by supporting portions 104a and 104b provided on the upper portion of the frame body 101 of the diaphragm case 10 so as to protrude into the belt-like portion 146 provided on the filter 140. It is necessary to make the parts 115a and 115b face each other.

  Further, in the case of FIG. 14, support shafts 113 a and 113 b are provided on the upper portion of the frame body 111 of the diaphragm 11, and protrusions 115 a and 115 b are provided on the lower front surface side. It is necessary to make the protrusions 115a and 115b face the belt-like portion 146 provided on the filter 140, for example, by supporting the support portions 104a and 104b provided on the portions. In either case, the pin 114 is provided on the rear surface side of the protruding portions 115a and 115b of the diaphragm 11, and the through hole 106 of the diaphragm case 10, the elastic body 75 of the partition wall 7 and the like are provided correspondingly. Needless to say.

  In the first and second embodiments, the case where the pleated filter member 145 is used for the filter 140 on the downstream side of the opening 33 of the dust collecting case 30 is shown, but the present invention is limited to this. Instead, the present invention can be applied to a filter using a filter member having another shape and structure, such as a flat filter.

[Embodiment 3]
16 and 17 are a front view of a filter on the downstream side of one or a plurality of filters according to Embodiment 3 attached to the opening of the dust collecting case of the vacuum cleaner according to the present invention, and AA thereof. It is an expanded sectional view. The same parts as those of the second filter according to the first embodiment are denoted by the same reference numerals. The filter 140 of FIGS. 16 and 17 is formed by integrally forming a reinforcing rib 149 made of resin on the top of a pleated filter member 145 instead of the band-like portion 146 of the first and second embodiments. In this example, the reinforcing rib 149 is integrally formed with a certain length L from the frame body 141. According to the filter 140 configured in this way, the same effect as in the first and second embodiments can be obtained, but in addition, the effect of improving the moldability can be obtained.

It is a longitudinal cross-sectional view of the vacuum cleaner main body of the vacuum cleaner which concerns on Embodiment 1 of this invention. It is a perspective view showing the whole vacuum cleaner composition concerning the present invention. FIG. 2 is a perspective view of an air vent, a diaphragm case, and a diaphragm provided in the partition wall of FIG. 1. FIG. 4 is a front view showing a state in which a diaphragm is incorporated in the diaphragm case of FIG. 3. It is a longitudinal cross-sectional view and effect | action explanatory drawing of the power transmission part of FIG. FIG. 6 is a plan sectional view of FIG. 5. It is a side view of the dust collection case of FIG. FIG. 8 is a perspective view of the filter assembly of FIG. 7. It is a front view of the filter of the downstream of FIG. It is AA expanded sectional drawing of FIG. It is a front view of the filter of the downstream of the dust collection case which concerns on Embodiment 2 of this invention. It is a front view of the other example of the filter of FIG. It is a front view of the other example of the filter of FIG. It is a front view of the other example of the filter of FIG. It is a front view of the other example of the filter of FIG. It is a front view of the filter of the downstream of the dust collection case which concerns on Embodiment 3 of this invention. It is an AA expanded sectional view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body, 2 Dust collection case accommodating part, 7 Bulkhead, 72 Ventilation hole, 75 Elastic body, 10 Diaphragm case, 104a, 104b Support part, 106 Through hole, 11 Diaphragm, 113a, 113b Support shaft, 114 pin 115a, 115b Projection part, 12 Power transmission part, 122 DC motor, 124 Eccentric cam, 125 Piston, 14 Electric blower, 16 Control part, 30 Dust collection case, 33 Opening part, 130 Filter assembly, 140 Second filter (Filter on the downstream side), 145 pleated filter member, 146 band-shaped portion, 146a rib, 147 uneven surface, 148 comb teeth, 149 reinforcing rib.

Claims (15)

A vacuum cleaner having a dust collection case housing portion in which a dust collection case is detachably accommodated upstream of a partition wall provided with a vent hole, and an electric blower is provided downstream of the partition wall to which a hose assembly is connected Having a body,
A filter attached to the downstream opening of the dust collecting case and provided with a belt-like portion in the lateral direction of the downstream surface;
A latch that has a rectangular frame with a wide upper part, a support part on both sides of the frame, a through hole in the wide part, and a latch that engages with the vent of the partition wall on the downstream side A diaphragm case detachably mounted on the upstream side of the ventilation opening of the partition wall by providing a piece ;
One end in the vertical direction is pivotally supported by the diaphragm case, and a diaphragm provided with a protrusion corresponding to a band-like portion provided on the filter on the upstream side of the other end;
An electric vacuum cleaner comprising: a power transmission unit configured to vibrate the vibration plate so that the protruding portion collides with a band-like portion of the filter and transmits the vibration to the filter. A vacuum cleaner having a dust collection case housing portion in which a dust collection case is detachably accommodated upstream of a partition wall provided with a vent hole, and an electric blower is provided downstream of the partition wall to which a hose assembly is connected Having a body,
A filter attached to the downstream opening of the dust collecting case and provided with a belt-like portion in the lateral direction of the downstream surface;
A latch that has a rectangular frame with a wide upper part, a support part on both sides of the frame, a through hole in the wide part, and a latch that engages with the vent of the partition wall on the downstream side A diaphragm case detachably mounted on the upstream side of the ventilation opening of the partition wall by providing a piece ;
A diaphragm vertical one end is pivotally supported by the diaphragm case,
A power transmission unit that vibrates the diaphragm so that the protrusion collides with the band of the filter, and transmits the vibration to the filter;
The diaphragm is approximately half the height of the diaphragm case, and has a wide portion on one side in the up-down direction. The diaphragm is pivoted on both sides of the other side in the up-down direction to the support portion of the diaphragm case. A frame provided with a support shaft to be supported, and provided with a projecting portion on the upstream side of the wide portion corresponding to a band-like portion provided on the filter of the downstream opening of the dust collecting case; A vacuum cleaner comprising a pin inserted into the through hole of the diaphragm case on the downstream side of the part . The filter attached to the downstream opening of the dust collecting case includes a frame having a shape corresponding to the downstream opening of the dust collecting case, a filter member attached to the frame, and a downstream of the filter member. vacuum cleaner according to claim 1 or 2, characterized in that a strip part provided on the lateral side surfaces. The electric vacuum cleaner according to claim 3 , wherein the belt-shaped portion is provided in contact with the upper side of the frame. The electric vacuum cleaner according to claim 3 , wherein the belt-like portion is provided with a gap between the upper side of the frame body. The vacuum cleaner according to claim 5 , wherein a plurality of ribs are provided on an upper edge of the belt-shaped portion, and upper ends of the ribs are integrally brought into contact with an upper side of the frame body. The electric vacuum cleaner according to claim 3 , wherein the belt-like portion is provided at a substantially central portion in the vertical direction of the filter member. The electric cleaning according to claim 7 , wherein a plurality of ribs are provided on the upper and lower edges of the belt-like portion, and upper and lower ends of the ribs are respectively brought into abutment with the upper and lower sides of the frame. Machine. The vacuum cleaner according to claim 3 , wherein the belt-like portion is provided below a central portion of the filter member. The vacuum cleaner according to any one of claims 1 to 9 , wherein a surface on the downstream side of the belt-like portion is formed in an uneven shape. The vacuum cleaner according to any one of claims 1 to 10 , wherein a filter member of a filter attached to the downstream opening of the dust collection case is formed in a pleat shape. 12. The electric vacuum cleaner according to claim 11, wherein the belt-like portion is formed in a comb shape, and the comb teeth are inserted and attached between pleats of a pleated filter member. The electric vacuum cleaner according to claim 1 or 2, wherein a filter member is attached to the downstream side of the diaphragm case. The vacuum cleaner according to claim 1 or 2, wherein a surface on the upstream side of the protruding portion provided on the diaphragm is formed in an uneven shape. The power transmission unit includes an electric motor, an eccentric cam connected to a rotating shaft of the electric motor, and a cylinder having a rod body and driven intermittently in the horizontal direction by being driven by the eccentric cam. the rod, electric according to claim 1, 2 or 14, characterized in that the pin of the diaphragm on the upstream side provided in the partition wall is constructed in contact with the downstream side abutting the elastic member Vacuum cleaner.

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