JPH09182700A - Suction port body for vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To be used for any surface to be cleaned by easily stopping or reducing the vibration of striking bodies except for cleaning despite of a simple constitution. SOLUTION: A pair of bearings 65 are arranged opposite to each other in both sides of a suction chamber 15 having a suction port 17 opened in the bottom face of a suction port main body 9. Both ends of striking bodies 81, 82 formed by arranging a plurality of beaters around vibration shafts 83, 84 having different elastic force are journalled between the bearings 65, 65 in such a state as roughly closing the suction port 17. A moving body 79 which vertically moves the vibration shaft 84 of the striking body 82 against the energizing force of a energizing member is provided in the bearings 65. In cleaning, the surface to be cleaned energizes the moving body 79 against the energizing member so as to move the vibration shaft 84 upward and the suction port 17 is roughly closed by the striking bodies 81, 82. The striking bodies 81, 82 are made to vibrate and strike the surface to be cleaned so as to collect the dust. When the suction port main body 9 is raised, the moving body 79 is made to move downward along with the vibration shaft 84 by the energizing member and the interval between the striking bodies 81, 82 are separated so as to be leaked so that the vibration of the striking bodies 81, 82 is stopped or reduced by reduction of the suction force.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port body of an electric vacuum cleaner for striking a surface to be cleaned and vibrating to suck dust on the surface to be cleaned.

[0002]

2. Description of the Related Art Conventionally, as a suction port body of an electric vacuum cleaner, which hits the surface to be cleaned and knocks out the dust sinking on the surface to be cleaned to enhance the dust absorbing effect, for example, Japanese Utility Model Publication No. 37-19224 and Japanese Utility Model Publication No. 47. As described in Japanese Patent Publication No. 25192, a vacuum cleaner main body is provided with a connection pipe connected to a hose or an extension pipe, and a suction port is opened in the lower surface of the suction port main body and is sucked into a suction chamber communicating with the connection pipe. A plurality of hitting bodies are provided by alternately abutting so as to close the mouth, and the sucking force generated by the drive of the electric blower of the electric vacuum cleaner body vibrates the hitting body to hit the surface to be cleaned and knock out dust. There is known a configuration in which a special drive device for absorbing dust is unnecessary.

In the Japanese Utility Model Publication No. 37-19224, each striking body is supported at both ends by springs having different strengths. Due to the difference between the spring forces and the suction force,
By vibrating each hitting body in the vertical direction, hitting the surface to be cleaned such as a carpet floated from the floor surface sucked at the suction port,
Dust out and absorb dust.

Further, in the one disclosed in Japanese Utility Model Publication No. 47-25192, each hitting body has a plurality of beads attached to a vibrating spring, and a balance between the spring force and the change in the suction force in the suction port main body. , The slapping bodies are vibrated in the vertical direction to strike the surface to be cleaned such as a carpet or tatami mat that is sucked into the suction port, and knock out dust to suck the dust.

[0005]

However, Japanese Utility Model Publication No. 37-19224 and Japanese Utility Model Publication No. 47-251 mentioned above.
In the suction body of the conventional electric vacuum cleaner described in Japanese Patent Publication No. 92, when the hose is stopped on the floor surface for moving furniture or the like, the suction port is separated from the floor surface and the suction port faces upward. May expose the struck body that continues to vibrate, generate a large amount of noise, inhale curtains, etc. and entangle with the struck body to damage the struck body, or dust such as hair or thread dust on the struck body. When removing these hairs and lint when they are entangled, an operation such as stopping the electric blower is required, which complicates the work.

Further, as described in, for example, Japanese Unexamined Patent Publication No. 7-59685, a wheel provided on the lower surface of the suction port main body is provided with a bypass air passage communicating between the suction chamber and the connecting pipe. Provided with a valve body that opens and closes the bypass air passage in an interlocking manner, the bypass air passage is blocked when the surface to be cleaned is cleaned, the rotary cleaning body is driven, and the suction pipe body is lifted to open the bypass pipe and leak. However, it is also possible to use this configuration to stop the rotating cleaning body, but it is not easy to detect the surface to be cleaned, especially if the surface to be cleaned such as a futon is easily deformed. There is also a complicated problem.

The present invention has been made in view of the above problems, and has a suction port body of an electric vacuum cleaner which has a simple structure and which can easily stop or reduce vibration of the hitting body outside the cleaning regardless of the surface to be cleaned. The purpose is to provide.

[0008]

A suction port body of an electric vacuum cleaner according to claim 1 is provided with a substantially rectangular suction port on a lower surface which is connected to an electric vacuum cleaner body which houses an electric blower and which faces a surface to be cleaned. A case body provided with an open suction chamber and a pair of bearings provided at both ends of the suction chamber in the longitudinal direction, and the suction port of the case body being axially supported by the bearings to substantially close the suction port. A plurality of vibrating shafts and a striking body having a striking element attached to the vibrating shaft are provided, and the striking bodies are vibrated by the suction force generated by the drive of the electric blower to be positioned at the suction port. In a suction port body of an electric vacuum cleaner that taps a surface to be cleaned to absorb dust, when the lower surface of the case body comes into contact with the surface to be cleaned, the tapping body substantially closes the suction port, When the bottom surface leaves the surface to be cleaned The striking bodies are separated from each other to open the suction port, and the lower surface of the case body comes into contact with the surface to be cleaned during cleaning so that the suction ports are substantially closed by the plurality of striking bodies in the suction chamber. Due to the suction force of the driven electric blower, the striking body vibrates and strikes the surface to be cleaned located at the suction port to absorb dust, and when the cleaning is interrupted or stopped, the case body is lifted from the surface to be cleaned and the bottom surface of the case body is covered. When separated from the cleaning surface, the plurality of hitting bodies are separated from each other to open the suction port to leak, and the suction force of the electric blower acting on the hitting body is reduced to stop or reduce the vibration of the hitting body. Since the vibrating hitting body is directly moved to adjust the suction force that causes the vibration, the vibration of the hitting body is stopped or reduced easily and surely.

The suction port body of the electric vacuum cleaner according to claim 2 is
A suction chamber having a substantially rectangular suction port opened on the lower surface facing the surface to be cleaned and connected to the main body of the electric vacuum cleaner housing the electric blower, and a pair of bearings provided at both longitudinal ends of the suction chamber. A case body having a case body, a plurality of vibrating shafts axially supported by the bearings in the suction chamber of the case body and substantially closing the suction port, and a striking body having a striking element attached to the vibrating shaft. In the suction port body of the electric vacuum cleaner that vibrates the hitting body by a suction force generated by driving the electric blower and taps the surface to be cleaned located at the suction port to absorb dust, The bottom surface of the case body is closed when the bottom surface of the case body is in contact with the surface to be cleaned, and the bottom surface of the case body is in contact with the surface to be cleaned. When leaving the surface to be cleaned With a lid body that opens the leak port, the bottom surface of the case body contacts the surface to be cleaned during cleaning, so that the tap body and the electric blower communicate with each other and open to the bottom surface of the case body. Close the leak opening with a lid,
The striking body that substantially closes the suction port in the suction chamber vibrates due to the suction force of the driven electric blower and strikes the surface to be cleaned located at the suction port to suck dust, and the case body is cleaned by suspending or stopping the cleaning. When lifted from the surface and the lower surface of the case body separates from the surface to be cleaned, the lid opens the leak port and leaks, reducing the suction force of the electric blower acting on the hitting body and stopping the vibration of the hitting body Alternatively, in order to reduce the vibration, by adjusting the suction force that causes the vibration, the vibration of the hitting body can be stopped or reduced easily and surely.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a suction port of a vacuum cleaner according to the present invention will be described below with reference to the drawings.

In FIG. 12, reference numeral 1 denotes a movable electric vacuum cleaner body. The electric vacuum cleaner body 1 accommodates an electric blower (not shown) therein, and a dust collecting chamber (not shown) is provided on the negative pressure side of the electric blower. Compartments are formed. A connection port 2 is formed on the front side in the moving direction of the electric vacuum cleaner body 1 so as to communicate with the dust collection chamber, and a hose 3 is detachably connected to the connection port 2. In addition, the hose 3 is provided with a hand operating portion 6 having a grip portion 5 at one end of a flexible hose body 4. Further, the grip portion 5 of the hose 3 is provided with operation means 7 for setting the drive state of the electric blower. Then, the suction port main body 9 is inserted and connected to the distal end portion of the grip portion 5 of the hose 3 via the extension pipes 8, 8.

On the other hand, the suction port main body 9 is shown in FIGS.
As shown in, an upper case 11 and a lower case 12 made of a synthetic resin such as ABS resin or polypropylene are combined and connected and formed by screws 13, and the lower surface, that is, the lower surface of the lower case 12 is flat and has a central portion in the longitudinal direction. It has a horizontally elongated barrel-shaped case body 14. Due to this shape, even if a futon or the like is applied to the outer peripheral surface, it is easily slipped off.

The lower case 12 is shown in FIGS.
As shown in FIG. 1, a suction chamber 15 extending in the longitudinal direction is formed. The suction chamber 15 is partitioned by a partition wall 16 having a substantially inverted U-shaped cross section, and the lower surface opening of the suction chamber 15 is a suction port.
The lower case 12 has a flat lower surface extending in the longitudinal direction and opened in a substantially rectangular shape. Further, a central lower partition wall 18 is provided at a substantially central portion of the lower case 12. This central lower partition
The partition wall 18 is provided from the partition wall 16 to the central portion of the rear wall of the lower case 12, and is formed wide on the partition wall 16 side and narrower on the rear wall side.
The ceiling portion of the partition wall 16 located in the lower central partition wall 18 is cut out, and the suction chamber 15 is communicated with the lower central partition wall 18.

Further, the lower case 12 has a pair of partition lower walls 19, which extend forward from both side wall portions 18a, 18a of the central lower partition wall 18 and are integrally connected to the central portion of the front wall of the lower case 12.
19 are provided, and these partition lower walls 19, 19 support the central portion in the longitudinal direction of the central lower partition wall 18 from the front side.

On the inner surface of the central portion of the upper case 11 in the longitudinal direction, a central upper partition wall 21 which is associated with the central lower partition wall 18 is integrally projected. Then, the tip ends of the central lower partition wall 18 and the central upper partition wall 21 are concavo-convex fitted to each other to be continuous, and the relay chamber 22 is partitioned and formed in the case body 14. Further, in the relay room 22, as shown in FIG.
Vertical rectifying ribs 23 are integrally provided between the side wall portions 21a, 21a.

Further, a substantially cylindrical projecting tubular portion 25, which communicates with the rear end of the relay chamber 22, is integrally projecting rearward at a substantially central portion in the longitudinal direction of the rear wall 11a of the upper case 11, A connecting pipe 26 is rotatably fitted and attached to the protruding tubular portion 25,
It communicates with the suction chamber 15 through the relay chamber 22.

Further, on the inner surface of the front part of the upper case 11, both side wall parts 21a, 21a of the central upper partition wall 21 corresponding to the partition lower walls 19, 19.
There is provided a pair of partition upper walls 27, 27 extending from the front to the front. The tips of the lower partition wall 19 and the upper partition wall 27 are not in contact with each other, and a ventilation gap 28 is formed between them.

On the other hand, as shown in FIG. 10, bearing grooves 32, 32 are formed correspondingly on the opposite surfaces of the longitudinal end walls 31a, 31b of the upper case 11 and the lower case 12, respectively. An inverted U is formed on the outer surface of both end walls 31a and 31a of the case 11.
A shaft support 33 having a character shape is integrally formed.

Reference numeral 35 denotes a wheel. The wheel 35 is made of synthetic resin and has one side surface opened, and a wheel shaft 36 is formed so as to project from the opened surface. Further, a flange 37 protruding outward is provided on the outer peripheral surface of the wheel shaft 36.
The flange 35 of the wheel 35 is fitted in the bearing groove 32 and is vertically sandwiched between the facing surfaces of the both end walls 31a and 31b, and rotatably attached to both longitudinal ends of the suction port body 9. . In this mounted state, the shaft support 33 is mounted on the wheel shaft 36.
Is fitted from above.

The wheel 35 has a large diameter substantially the same as the shape of the end portion of the suction port body 9, covers the end face of the suction port body 9 in the longitudinal direction, and surrounds the periphery of this end face. A gap 38 is formed between them.

Further, as shown in FIG. 11, the suction port main body 9 is provided with an upper ventilation chamber 41. The upper ventilation chamber 41 includes a pair of partition upper walls 27, 27 of the upper case 11, The front wall portion 11b of the upper case 11 is formed by being partitioned by a portion located between the pair of partition upper walls 27, 27 and a vertical front wall portion 21a of the central upper partition wall 21 facing the front upper wall 11c. Has been done.

Further, the inlet main body 9 is provided with an inlet 42 which is located above the lower surface, that is, the lower surface 12a of the lower case 12 and constitutes an intake air passage, facing the upper ventilation chamber 41. In addition, the inlet 42, as shown in FIGS. 3, 5 and 8,
It is formed in a plurality of slits arranged in parallel. In addition,
The inlet 42 is preferably located closer to the upper end side of the suction port body 9 because it can be less likely to be closed by a futon or the like.

Further, a lower ventilation chamber 43 is provided below the upper ventilation chamber 41. This lower ventilation chamber 43 is the lower case
A pair of partition lower walls 19 and 19 and a front wall portion 12 of the lower case 12.
It is defined by a portion located between a pair of partition upper walls 27, 27 of b and a vertical front wall portion 16a of the partition wall 16 facing the front wall portion 11b. Further, an outlet 44 of the intake air passage is formed at the lower end of the front wall portion 16a. The outlet 44 is a horizontally long rectangle.

The inlet 42, the upper ventilation chamber 41, the lower ventilation chamber 43 and the outlet 44 form a first intake air passage 45.
The first intake air passage 45 communicates with the outside of the relay chamber 22 via the ventilation gap 28. An air filter 46 made of urethane foam or the like is housed in the upper ventilation chamber 41.

Furthermore, both longitudinal end walls of the suction port body 9
Each of the inlets 31a and 31b is provided with an inlet (not shown) for taking in outside air, and the inlet is located inside the wheel 35 so that it is covered by the wheel 35 and is not exposed to the outside. A relay room inside the suction port body 9 through this inlet
Except for 22, the inner space 47 on the outer peripheral side of the relay chamber 22 communicates with the outside of the suction port body 9.

Further, an inlet (not shown), an internal space 47 of the suction port body 9, a ventilation gap 28, a lower ventilation chamber 43 and an outlet 44.
Form a second intake air passage 48. This second intake air passage
The inlet of 48 communicates with the gap 38 through the inside of the wheel 35.

On the other hand, as shown in FIGS. 4, 5 and 9, a pair of grooves 51, 51 forming the third intake air passage 50 are formed at the lower end of the front wall portion 22b of the lower case 12. . These grooves
51 and 51 connect the outside of the suction port body 9 and the suction chamber 15 to each other.

As shown in FIGS. 4, 6 and 9, a fourth intake air passage is provided at the rear portion of the lower case 12 on the side of the connecting pipe 26.
A pair of grooves 53, 53 that are close to each other and form 52 are formed. The pair of grooves 53, 53 communicate the outside of the suction port body 9 with the suction chamber 15. Furthermore, the pair of grooves 53,
53 is formed in the central portion of the lower case 12 in the longitudinal direction and serves as a relay room.
The suction chamber where the suction force exerted through 22 is the strongest
It communicates with the central portion in the longitudinal direction of 15. The arrangement of these grooves 53, 53 is preferable because it is possible to secure the intake air that is sucked into the suction chamber 15 through the grooves 53, 53 with a higher suction force.

A rib-shaped sled wall 54 extending in the front-rear direction is integrally provided between the pair of grooves 53, 53. Both front and rear ends of the sled wall 54 are curved. The sled wall 54 improves the running property of the suction port body 9 in the front-rear direction.

On the other hand, as shown in FIGS. 3 to 5, the lower surface of the case body 14 directly communicates with the relay chamber 22 from the rear portion of the central portion of the lower case 12 in the longitudinal direction without passing through the suction chamber 15. Two pairs of ventilation holes 56 and 57 are formed. The one pair of ventilation holes 56, 56 are formed on both sides of the sled wall 54, and the other pair of ventilation holes 57, 57 are formed in the pair of grooves 53,
It is provided on both sides across 53. A straightening rib 23 is located directly above these ventilation holes 56, 57, and the straightening rib 23 allows the suction air flow from the suction chamber 15 to the connecting pipe 26 to flow from the ventilation holes 56, 57. A large vortex is prevented from winding in the upper part of the relay chamber 22 after being mixed with the suction air flow toward the connecting pipe 26.

On the lower surface of the suction port main body 9, there are provided, for example, two guards 61 as a restricting body substantially flush with the lower surface. These guards 61, 61 are formed in a bridge shape extending across the suction port 17 in the front-rear direction, that is, extending in the region of the suction port 17, and separated from each other in the longitudinal central portion of the suction port 17. Are located substantially parallel to each other. The suction port 17 is divided into three openings by these guards 61, 61. Further, ventilation holes 57, 57 are arranged on the rear side of the pair of guards 61, 61, respectively.

Even if the surface to be cleaned is a soft surface to be deformed such as the surface of a futon or a sheet, the soft surface to be cleaned is sucked into the suction chamber 15 by the guards 61, 61 during cleaning. The intake port 17 is prevented from being completely closed by blocking or restricting the opening. Further, since the guards 61, 61 are flush with the lower surface of the suction port main body 9, traveling on the surface to be cleaned is facilitated, and the traveling property of the suction port main body 9 is improved.

The lower surface of the suction port body 9, that is, the lower case
As shown in FIG. 11, the lower surface 12a of the protrusion 12 has a protrusion 62
Is provided. The protruding portion 62 is formed by protruding horizontally toward the suction port 17 from the lower end of the front wall portion 12b of the lower case 12 toward the rear, and is formed by a pair of guards 6.
It is integrally connected to the front end of 1,61. The protruding portion 62 is substantially flush with the lower surface 12a of the lower case 12, and is formed so as to cover the outlet 44 when viewed from the lower surface 12a side. Then, as shown in FIG. 9, the width of the opening of the suction port 17 at the central position among the three suction ports 17 divided by the guards 61, 61 is narrower than the width of the openings of the other suction ports 17. .

Further, the lower case 12 has a structure shown in FIGS.
As shown in FIG. 5, bearing mounting recesses 64 are formed at both ends of the suction chamber 15 in the longitudinal direction. The bearing mounting recess 64 is, as shown in FIG. 1, a lower surface 12a of the lower case 12.
Side wall 64a
An engaging hole 64b is formed in this. In addition, one side wall formed in the shape of a square cylinder with a bottom is cut out to leave a positioning rib 64c having a substantially U shape.

Bearings 65 are detachably mounted and housed in bearing mounting recesses 64 formed at both ends of the suction chamber 15 in the longitudinal direction.

The bearing 65 comprises a fixed bearing 66 and a mounting bearing 67, as shown in FIGS.
The fixed bearing 66 has a vertical wall 66a and a contact portion 66b projecting laterally from the lower end portion of the vertical wall 66a in the central portion with a gap 66c.
It is divided into left and right parts. In addition, the vertical wall 66
In a, one deep notch groove 68a and two notch side grooves 69a, 69a shallower than the notch groove 68a are formed on both sides of the notch groove 68a, and the bottom portions of the notch groove 68a and the notch side grooves 69a, 69a are shafts. Bearing recesses 68b and 69b are formed as supporting portions, respectively. Further, fixed walls 66d, 66d projecting downward in the same direction as the vertical wall 66a are provided on both sides of the one contact portion 66b in the protruding direction, and a pair of fixed walls 66d and the contact portion 66b are provided. A substantially U-shaped biasing member holding portion 71 for mounting a biasing member 70 such as a spring, a leaf spring, or rubber on the walls 66d, 66d.
Is configured.

On the other hand, the mounting bearing 67 is a vertical wall 66 of the fixed bearing 66.
It is formed by a vertical wall 67a that contacts a and an eaves wall 67b that projects laterally from this vertical wall 67a.The eaves wall 67b and the vertical wall 67a are integrally formed in the notch groove 68a and one notch side groove 69a. Rib-shaped projections 73a and 74a inserted respectively
The rib-like projections 73a and 74a have their tip portions formed with supporting portions 73b and 74b as shaft supporting portions, respectively, and the rib-like projections 73a and 74a are formed in the notch groove 68a and the notch side groove 69a, respectively. When these are inserted, these rib-shaped protrusions
Bearing portions 73b and 74b of 73a and 74a and bearing recesses of the fixed bearing 66
Bearing portions 75 and 76 are formed so as to face 68b and 69b with a gap therebetween.

Further, at both ends of the vertical wall 67a of the mounting bearing 67, contact projections 67c for contacting the contact portions 66b of the fixed bearing 66 are provided.
, 67c are formed. Also, the vertical wall 6 of the mounting bearing 67
At the center of 7a, the gap 66c of the contact portion 66b of the fixed bearing 66 is
A pair of engaging pieces 7 each having an engaging claw 77a formed at a tip end thereof for engaging with
7b is formed via a gap 77c.

Also, rib-shaped projections on the eaves wall 67b of the mounting bearing 67
A through hole 78 is formed at the end on the side where the 74a is not provided, at a position facing the biasing member holding portion 71 on the other notch side groove 69a side of the fixed bearing 66. A moving body 79 is provided as a means. And this mobile
79 includes a sliding portion 79a having a curved lower surface, a rod-shaped portion 79b protruding from the upper surface of the sliding portion 79a and movably fitted into the through hole 78 of the mounting bearing 67, and an upper surface at the upper end of the rod-shaped portion 79b. Recessed holding groove facing the other notch side groove 69a of the fixed bearing 66.
It is integrally formed with a holding portion 79d having 79c.
The sliding portion 79a preferably has low frictional resistance and wear resistance. Further, the bearing portions 75 and 76 of the pair of bearings 65 and 65 facing each other and the moving body 79 correspond to each other.

To mount the bearing 65 in the bearing mounting recess 64 formed in the lower case 12, first, the fixed bearing 66 is attached to the abutting portion 66b and the bottom of the vertical wall 66a.
It is positioned and placed on the bottom wall 64a. In this state, the gap 66c through which the engaging claw 77a is inserted is the engaging hole formed in the bottom wall 64a.
The front-back, left-right movement is restricted by a positioning rib 64c corresponding to 64b and having a substantially U-shape and the peripheral wall. Next, the mounting bearing 67 is attached to the rib-like projections 73a, 74 of the mounting bearing 67.
While inserting b into the notch groove 68a and the notch side groove 69a of the fixed bearing 66 and the engaging pieces 77b and 77b into the gap 66c and the engaging hole 64b, the engaging claws 77a and 77b of the engaging pieces 77b and 77b,
77a penetrates through the engagement hole 64b and is engaged, and the fixed bearing 66 is mounted and housed in the bearing mounting recess 64 by the mounting bearing 67.

Next, in the suction chamber 15, hitting bodies 81 and 82 are installed along the longitudinal direction thereof so as to vibrate in the vertical direction by the suction force.

That is, as shown in FIGS. 1 and 9 to 11, the hitting bodies 81 and 82 are vibrating shafts 83 and 84 made of spring wire material such as piano wire, and the vibrating shafts 83 and 84 are inserted therethrough. And beaters 85, 85 as a plurality of tapping elements. And the beater 85 is a short substantially cylindrical shape,
The inner diameter is formed larger than the vibrating shafts 83 and 84 to improve vibration characteristics, and is formed from rubber or elastomer to reduce operating noise. Further, as the vibration shaft 83, one whose elastic force is stronger than the elastic force of the vibration shafts 84, 84 is used.

The hitting body 81 is attached by inserting both end portions of the vibration shaft 83 into the bearing portions 75, 75 of the bearings 65, 65, respectively. Further, one hitting body 82 is attached by inserting both end portions of the vibration shaft 84 into the bearing portions 76 of the bearing 65. Also, the other hitting body
Both ends of the vibration shaft 84 are inserted into the notch-side grooves 69a on the side where the moving body 79 is located, and the biasing member 70 and the holding portion 79 of the moving body 79 are provided.
It is attached so as to be sandwiched between and with the holding groove 79c of the holding portion 79d, and is movable in the vertical direction in response to the vertical movement of the moving body 79 against the urging force of the urging member 70. Has been.

The beater 85 of the hitting body 82 at the position corresponding to the guards 61, 61 is formed to have a smaller diameter than the outer diameters of the other beaters 85. This is for efficiently hitting the surface to be cleaned with the large-diameter beater 85 at a position not corresponding to the guards 61, 61 when the hitting bodies 82, 82 vibrate.

Regarding the attachment of the hitting bodies 81, 82 to the suction chamber 15 of the suction port body 9, first, the suction assembly assembled by housing one bearing 65 in the one bearing mounting recess 64 of the lower case 12 is carried out. The mouth body 9 is positioned in a predetermined state with the suction port 17 of the suction chamber 15 facing upward. Then, in the other bearing mounting recess 64, the fixed bearing 66 of the other bearing 65 abuts on the bottom wall 64.
Place it in contact with a. Next, one end of the vibrating shaft 83 of the hitting body 81 is inserted from the suction port 17 of the suction chamber 15 through the insides of the pair of guards 61, 61 into the suction chamber 15 along the longitudinal direction of the hitting body 81. Insert into the bearing portion 75 of the mounted bearing 65. Then, the other end side of the vibrating shaft 83 of the hitting body 81 is inserted from the notch groove 68a of the other fixed bearing 66 and disposed in the bearing recess 68b.

Similarly, one end of the vibrating shaft 84 of one hitting body 81 is inserted from the suction port 17 of the suction chamber 15 through the insides of the pair of guards 61, 61 into the suction chamber 15 along its longitudinal direction. The one end side of the vibration shaft 84 is inserted into the bearing portion 76 of the one bearing 65. Then, the other end side of the vibrating shaft 84 of the hitting body 82 is inserted from the notch side groove 69a of the other fixed bearing 66 and disposed in the bearing recess 69b.

The other striking body 81 is such that one end side of the vibration shaft 84 is inserted from the suction port 17 of the suction chamber 15 through the insides of the pair of guards 61, 61 into the suction chamber 15 along its longitudinal direction, Insert one end side of the vibration shaft 84 from the notch side groove 69a of the one bearing 65 where the moving body 79 is located, and insert the holding groove 79c of the holding portion 79d between the biasing member 70 and the holding portion 79d of the moving body 79. To engage and pinch. Then, the other end side of the vibrating shaft 84 of the hitting body 82 is inserted from the notch side groove 69a of the other fixed bearing 66 to urge the biasing member 70.
Place it on the tip of the.

Next, the mounting bearing 67 is provided with the rib-shaped projections 73a and 74a of the mounting bearing 67 in the notch groove 68a and the notch side groove 69a of the fixed bearing 66, and the engaging pieces 77b and 77b are provided in the gap 66c and the engaging hole. Inserted while positioning on 64b, engaging pieces 77b, 77b
The engaging claws 77a, 77a of the pierce through the engaging holes 64b to engage with each other, the fixed bearing 66 is housed in the bearing mounting recess 64 by the mounting bearing 67, and both ends of the vibrating shafts 83, 84 are mounted on the fixed bearing 66. The bearings 67 are respectively supported by a pair of bearings 65 formed by the bearings 67.

In this way, the hitting bodies 81 and 82 are moved to the suction chamber 15
The suction port 17 of the suction chamber 15 is provided at the time of the disposition.
Although a pair of guards 61, 61 are formed on the base, a pair of bearings 65, 65 for supporting both ends of the vibrating shafts 83, 84 of the hitting bodies 81, 82 are fixed bearing 66 and mounting bearing 67. Since the split bearing is composed of, it can be easily arranged.

Of the attached hitting bodies 81, 82, the hitting bodies 82, 82 are at the same height position, and the suction chamber 15
9 and FIG. 11, the striking bodies 81 are arranged above the striking bodies 82, 82 and are arranged close to the outer circumferences of the upper and lower sides of the striking bodies 82, 82. As shown in Fig. 6, when the slats 81, 82 are viewed from below.
Are arranged side by side so as to close the suction port 17 substantially. Then, in the state where the suction force does not act on the beating bodies 81, 82, the respective beating bodies 81, 82 maintain a horizontal posture by their elastic force. Even if the adjacent beating bodies 81, 82 are in contact with each other. In addition, these hitting bodies 81, 82 may be provided at the same height position without changing the height position vertically.

Further, the tapping bodies 81, which are arranged in parallel in the suction chamber 15,
82 is located slightly above the suction port 17. And
Between the hitting bodies 81, 82 and the suction port 17, the suction chamber 15
Is communicated with the outlet 44 of each intake air passage and the grooves 51 and 53.

Next, the operation of the above embodiment will be described.

At the time of cleaning, the suction port body 9 is connected to the electric vacuum cleaner body 1 via the hose 3 and the extension tubes 8 and 8. Then, an electric blower (not shown) is appropriately driven by operating the operating means 7 of the hand operating portion 6 of the hose 3, and the holding portion 5 of the hand operating portion 6 of the hose 3 is held and pushed to cover the suction port body 9. Run it back and forth on the cleaning surface to clean it. By the traveling of the suction port body 9 on the surface to be cleaned, the surface to be cleaned is stretched by the wheels 35 on both sides of the suction port body 9, and the moving body 79 provided on the bearing 65 is urged by the urging member 70. The end of the vibrating shaft 84 of the hitting body 82 is moved upward against the urging force of the hitting body 82, and the outer periphery of the beater 85 of the hitting body 82 is substantially adhered to the outer periphery of the beater 85 of the hitting body 81 as shown in FIG. Let the suction port body 9
The suction port 17 of the suction chamber 15 is substantially closed by a plurality of hitting bodies 81, 82.

The suction port 17 has a plurality of hitting bodies 8
By being substantially closed by 1, 82, the suction force generated by the driving of the electric blower (not shown) is communicated with the dust collecting chamber on the negative pressure side of the electric blower through the hose 3 and the extension pipes 8, 8. Suction chamber 15 through the relay chamber 22 of the suction port body 9
, The vacuum degree of the suction chamber 15 gradually rises due to this suction force, and as shown in FIG.
82 is attracted substantially simultaneously against the elastic forces of the vibration shafts 83 and 84 and warps so as to be convex upward.

That is, since the suction port 17 of the suction chamber 15 of the suction port body 9 is substantially closed by the plurality of hitting bodies 81 and 82, the vacuum degree of the suction chamber 15 increases due to the influence of the suction force. Accordingly, the hitting bodies 81 and 82 are attracted substantially simultaneously against the elastic force of the vibration shafts 83 and 84 and warp so as to be convex upward.

By the way, since the elastic force of the vibrating shaft 83 of the hitting body 81 is smaller than the elastic force of the vibrating shafts 84, 84 of the hitting bodies 82, 82 on both sides thereof, the warping of the hitting body 81 from a certain point after the start of suction. The amount becomes larger than the amount of warp of the hitting bodies 82, 82.
As shown in FIG. 5, the gap between the adjacent hitting bodies 81 and the hitting bodies 82, 82 becomes large, and air is sucked from this gap, so that the degree of vacuum of the upper portion of each hitting body 81, 82 in the suction chamber 15 is increased. Goes down. Therefore, each of the hitting bodies 81 and 82 returns due to its elastic force, and as shown in FIG. 15, the hitting bodies 81 and 82 warp so as to be convex downward due to the inertial force at the time of returning.
Hit the surface to be cleaned such as the cover of the futon that is sucked into the suction port 17.

Further, due to the difference in elastic force between the vibrating shafts 83, 84 of the hitting bodies 81, 82, the hitting bodies 82, 82 are warped and deformed rearward of the hitting body 81 and downward, and hitting operation. As shown in FIG. 16, the striking operation of the striking body 81 on the surface to be cleaned is hindered by the striking bodies 82, 82. Then, after the beating of the surface to be cleaned, the hitting bodies 81, 82 return to the original position where they substantially close the suction port 17 again as shown in FIG. 16, so the above operation is repeated and the hitting bodies 81, 82 are repeated. 82 vibrates vertically.
As a result, dust from the surface to be cleaned is sucked from the surface to be cleaned while striking the surface to be cleaned, and is sucked into the dust collecting chamber from the suction chamber 15, the relay chamber 22 through the connecting pipe 26, the extension pipes 8 and 8, and the hose 3. Can absorb dust.

In such dust absorption accompanied by tapping of the surface to be cleaned, since dust on the surface to be cleaned is knocked out by tapping,
High dust absorption effect.

Further, when the hand operation part 6 of the hose 3 is placed on the surface to be cleaned when the cleaning is interrupted for moving furniture or turning the futon over the surface to be cleaned, the suction port body 9 When the lower surface is separated from the surface to be cleaned and the suction port 17 is exposed, the bias of the moving body 79 by the surface to be cleaned is released, and the moving body 79 biases the biasing member 70 provided on the bearing 65. Thus, the moving body 79 is moved downward through the vibration shaft 84 of the hitting body 82, which is the direction in which it projects from the lower surface of the suction port body 9.
By the movement of the moving body 79, as shown in FIG. 17, the outer circumference of the beater 85 of the moving body 79 is separated from the outer circumference of the beater 85 of the striking body 81, and the gap is increased to open the suction port 17. Due to the opening of the suction port 17, air is sucked from the gap and the vacuum degree of the upper portion of each hitting body 81, 82 in the suction chamber 15 is lowered, and the elastic force of the vibration shafts 83, 84 of the hitting bodies 81, 82 is reduced. The warp deformation against it does not occur or is reduced, and the vibration of the hitting bodies 81, 82 is stopped or reduced.

Therefore, with a simple structure, it is possible to reduce a large noise caused by the vibration of the slapping bodies 81 and 82 during the interruption of the cleaning, and when dusts such as hair and thread dust are entangled with the slapping bodies 81 and 82, these When removing hair and lint, operations such as stopping the electric blower are necessary, and work is safe and easy.

Since the soft surface to be deformed, such as the surface of the futon and the sheets, which is easily deformed, is sucked by the suction port 17 of the suction port body 9, the entire suction port 17 may be the suctioned surface. Even if the air is substantially airtightly sucked through the suction port 17 and extremely reduced, at least one of the first to fourth intake air passages 45, 48, 50, 52 provided in the suction port body 9 is used. And the suction chamber that passes through each hitting body 81, 82.
Since the intake air to 15 can be secured, the hitting bodies 81 and 82 can be operated reliably.

Furthermore, when cleaning a soft surface to be deformed, such as a futon or a sheet, which is easily deformed, the front surface, lining, or sheets of the futon, which is the surface to be cleaned, is sucked into the suction port 17 over the entire suction port 17. Even if attached, since the pair of guards 61, 61 are formed in the suction port 17, the outer surface, lining, or sheets of the futon that is the surface to be cleaned does not completely block the suction port 17, and , Hitting body 81,82
It is not sucked into the suction port body 9 through the space. Therefore, the hitting bodies 81, 82 can be cleaned satisfactorily without causing a malfunction in which they cannot vibrate. Further, the guards 61, 61 prevent the futon's outer material, lining, sheets, etc. from being sucked into the suction port body 9 through the spaces between the hitting bodies 81, 82, and can slide on the surface to be cleaned. Good traveling operation is possible and cleaning workability can be improved.

Further, guards 61, 61 for preventing the defective operation of the hitting bodies 81, 82 and improving the traveling property are formed in the suction port 17, and the vibration shafts 83, 84 of the hitting bodies 81, 82 are split bearings. bearing
Since it is supported by 65, the tapping bodies 81, 82 can be easily arranged in the suction chamber 15, that is, attached.

Further, in order to control the vibration by leaking between the hitting bodies 81 and 82 in the suction chamber 15 which opens the suction port 17 for dust suction on the lower surface, the wheels 35 and 35 are used for controlling the vibration when the surface is soft. Even if the surface to be cleaned is not in a tensioned state and the moving body 79 does not move and remains leaking, the suction force does not change, and therefore dust is not affected.

In the above embodiment, the hitting body 8
Although both ends of the vibrating shafts 83 and 84 of 1 and 82 are supported by the bearings 65 that are split bearings, the description has been given, but one of them may simply be provided with a hole for holding one end of the vibrating shafts 83 and 84.

Although the moving body 79 is provided on both of the bearings 65, it is possible to use either one of them.

Further, the moving body urged by the urging member 70
The 79 is used to move the vibration shaft 84 of the hitting body 82, the suction port 17 is closed during cleaning to vibrate the hitting body 82, and the vibration of the hitting body 82 is stopped or reduced outside the cleaning. But,
When the lower surface of the case body 14 comes into contact with the surface to be cleaned, at least one of the hitting bodies 81 and 82 provided is moved to substantially close the suction port 17 by the plurality of hitting bodies 81 and 82.
When the lower surface of 14 separates from the surface to be cleaned, at least one of the striking bodies 81, 82 is moved to separate the striking bodies 81, 82 from each other, and the suction port 17 is opened. You can also

On the other hand, the fixed bearing 66 of the bearing 65 which is a split bearing
Although it is configured to be housed in the bearing mounting recess 64, this may be configured integrally with the lower case 12 by integral molding or the like.

Further, although the guards 61, 61 are constructed as a continuous bridge that crosses the region of the suction port 17, they may be formed, for example, by dividing from the middle portion with a small gap, and at least the soft surface to be cleaned is suctioned. In chamber 15 or each hitting body 8
The shape or position is not limited as long as it functions so as not to be sucked into the suction port body 9 through the space between 1 and 82.

The suction port body 9 is not limited to a canister-type vacuum cleaner, but is an upright type directly attached to the vacuum cleaner body 1, or the vacuum cleaner body 1 and the suction port body 9 are integrated. It can also be applied to self-propelled electric vacuum cleaners.

Next, another embodiment of the present invention will be described with reference to FIGS.

In the embodiment shown in FIGS. 18 to 22, the moving body 79 of the embodiment shown in FIGS. 1 to 17 is not provided, and the ventilation holes 56 and 57 for preventing the turbulence of the intake air flow are changed. In addition, a leak having a larger opening area than these ventilation holes 56, 57 and communicating with the relay chamber 22 between the suction chamber 15 and the connection pipe 26 connected to the vacuum cleaner body 1 via the hose 3 and the extension pipe 8. A mouth 91 is provided.

Further, the leak port 91 is provided with a lid 92 for opening and closing the leak port 91. As shown in FIGS. 21 and 22, the lid 92 is formed of a rectangular plate having a small friction resistance and wear resistance, and both longitudinal edges are curved in the same direction. Has been done.
In addition, shaft portions 93 projecting in the longitudinal direction are provided at both ends of the lid body 92 on one side in the longitudinal direction. Further, as shown in FIG. 22, the upper surface of the lid 93 on which both side edges are bent has a claw protruding in the same direction as the direction in which both side edges are bent in the vicinity of the base end of one shaft portion 93, as shown in FIG. A section 94 is provided.

Further, on both sides of the front side of the leak port 91, a lid body is provided.
A shaft stopper portion 96 that rotatably supports the shaft portion 93 of the lid body 92 is provided so that both curved edges of the suction member 92 are located in the front-rear direction of the running direction of the suction port body 9. Further, at one corner on the front side of the leak port 91, as shown in FIG. 22, there is provided a spring stopper 97 that opens downward in a substantially cylindrical shape corresponding to the claw 94 of the lid 92. The portion 97 is provided with a spring member 98 such as a coil spring, a leaf spring, or rubber. Then, due to the biasing force of the spring member 98, the claw portion of the lid 92 is always
The lid body 92 is rotated by contacting the base plate 94 to open the leak port 91.

During cleaning, the surface of the suction port body 9 running on the surface to be cleaned is stretched by the wheels 35, 35, and the lid 92 is pressed against the surface to be cleaned and springs. The leak opening 91 is closed by being rotated against the biasing force of the member 98.

As in the embodiment shown in FIGS. 1 to 17, due to the blockage of the leak port 91, the striking bodies 81 and 82 are vibrated by the suction force generated by the drive of the electric blower to strike the surface to be cleaned. While absorbing dust.

Further, when the hand operation part 6 of the hose 3 is placed on the surface to be cleaned when the cleaning is interrupted to move the furniture, turn over the futon or the like, the surface to be cleaned is turned over. When the lower surface is separated from the surface to be cleaned and the suction port 17 faces, the bias of the lid body 92 due to the surface to be cleaned is released, and the weight of the lid body 92 and the lid body 92 bias the spring member 98. As a result, the claw portion 94 is pressed and pivots about the shaft portion 93 toward the front side, and the leak port 91 is opened. Due to the opening of the leak port 91, air is sucked from the leak port 91, and the degree of vacuum of the upper portion of each hitting body 81, 82 in the suction chamber 15 is lowered,
The warp deformation against the elastic force of the vibration shafts 83, 84 of the hitting bodies 81, 82 does not occur or is reduced, and the vibrations of the hitting bodies 81, 82 are stopped or reduced.

Therefore, with a simple structure, a large noise due to the vibration of the slapping bodies 81, 82 during the interruption of cleaning can be reduced, and when the slapping bodies 81, 82 are entangled with dust such as hair or thread dust, When removing hair and lint, operations such as stopping the electric blower are necessary, and work is safe and easy.

Further, the spring member 98 keeps the lid always leaking.
Since 91 is biased to open, it is possible to prevent the lid body from coming into close contact with the leak port 91 due to the negative pressure of the leak port 91, and securely when the lower surface of the suction port body 9 is lifted and separated from the surface to be cleaned. The leak port 91 can be opened, and the vibrations of the hitting bodies 81 and 82 can be reliably stopped or reduced.

If the surface to be cleaned is very soft and the suction port body 9 is pressed against the surface to be cleaned, the surface to be cleaned does not become taut and the leak port 91 leaks without being blocked. In some cases, suction port 17 and leak port 91
The total suction force, which is the suction from both, does not change and does not affect the dust suction.

Further, since both side edges of the lid body 92 located in the front-rear direction of the suction port body 9 are curved, the lid body 92 travels smoothly without being caught on the surface to be cleaned when traveling on the surface to be cleaned. it can.

Further, since the edge of the lid body 92 located in the front-back direction of the suction port body 9 is curved, the lid body 92 is lifted by its own weight when the suction port body 9 is lifted and the lower surface is separated from the surface to be cleaned. Even if is rotated, the lid body 92 is rotated so that the curved edge located on the front side of the lid body 92 comes into contact with the edge of the leak port 91 and is substantially perpendicular to the lower surface of the suction port body 9. Instead, when cleaning is started again, the curved edge on the rear side of the lid body 92 comes into contact with the surface to be cleaned, and the lid body 92 can easily and smoothly rotate in the closing direction at this edge.

In the embodiment shown in FIGS. 18 to 22, the spring member 98 is used to press the claw portion provided on the lid, but the lower surface of the suction port body 9 contacts the surface to be cleaned. In this case, the lid 92 closes the leak port 91, and the lid 92 opens the leak port 91 when the lower surface of the suction port body 9 is separated from the surface to be cleaned. .

[0084]

According to the suction port body of the electric vacuum cleaner of claim 1, when the case body is lifted from the surface to be cleaned and the lower surface of the case body is separated from the surface to be cleaned due to interruption or suspension of cleaning. Directly separate vibrating striking bodies to separate or separate the multiple striking bodies and open the suction port to leak, reduce the suction force of the electric blower acting on the striking bodies and stop or reduce the vibration of the striking bodies. Since the suction force that causes the vibration is adjusted, the vibration of the hitting body can be stopped or reduced easily and reliably with a simple configuration.

According to the suction port body of the electric vacuum cleaner of claim 2, the lower surface of the case body comes into contact with the surface to be cleaned at the time of cleaning so that the striking body and the electric blower communicate with each other. The leaking port that opens on the lower surface of the is closed with a lid, and the striking body that substantially closes the suction port in the suction chamber vibrates by the suction force of the driven electric blower and strikes the surface to be cleaned located at the suction port. The case body is lifted from the surface to be cleaned due to interruption or suspension of cleaning, and when the lower surface of the case body is separated from the surface to be cleaned, the lid body opens the leak port to leak and acts on the hitting body. Since the suction force of the electric blower is reduced to stop or reduce the vibration of the hitting body, the vibration of the hitting body can be stopped or reduced easily and surely by adjusting the suction force that causes the vibration with a simple configuration.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a bearing portion of an embodiment of a suction port body of an electric vacuum cleaner according to the present invention.

FIG. 2 is an exploded perspective view showing the same bearing.

FIG. 3 is a top perspective view showing the suction inlet main body of the same.

FIG. 4 is a top and bottom perspective view of the same.

FIG. 5 is a front view of the same.

FIG. 6 is a rear view of the same.

FIG. 7 is a side view of the same.

FIG. 8 is a plan view of the same.

FIG. 9 is a bottom view of the same.

FIG. 10 is a front sectional view of the above.

FIG. 11 is a side sectional view of the same.

FIG. 12 is a perspective view showing the same electric vacuum cleaner body.

FIG. 13 is an explanatory diagram showing the operation of the hitting body.

FIG. 14 is an explanatory view showing the operation of the hitting body.

FIG. 15 is an explanatory diagram showing the operation of the hitting body.

FIG. 16 is an explanatory view showing the operation of the hitting body.

FIG. 17 is an explanatory diagram showing a situation of leakage when the suction inlet main body is lifted.

FIG. 18 is a side cross-sectional view showing a suction port body according to another embodiment of the present invention.

FIG. 19 is a front sectional view of the above.

FIG. 20 is a bottom view of the same.

FIG. 21 is a perspective view showing the vicinity of a leak port on the lower surface of the suction port body of the above.

FIG. 22 is a perspective view showing a state in which the same leak port is opened.

[Explanation of symbols]

 1 Vacuum cleaner body 9 Suction port body 14 Case body 15 Suction chamber 17 Suction port 65 Bearing 81,82 Striking body 83,84 Vibrating shaft 85 Beating device 91 Striking element Leak port 92 Lid body

Claims (2)

[Claims] 1. A suction chamber, which is connected to a main body of an electric vacuum cleaner accommodating an electric blower and has a substantially rectangular suction port opened on a lower surface facing a surface to be cleaned, and the suction chamber is provided at both ends in a longitudinal direction of the suction chamber. A case body including a pair of bearings, a plurality of vibrating shafts axially supported by the bearings in the suction chamber of the case body so as to substantially close the suction port, and a striking element attached to the vibrating shaft. In a suction port body of an electric vacuum cleaner, which has a striking body having, and vibrates the striking body by a suction force generated by driving the electric blower to strike a surface to be cleaned located at the suction port to absorb dust. When the lower surface of the case body contacts the surface to be cleaned, the hitting body substantially closes the suction port, and when the lower surface of the case body separates from the surface to be cleaned, the hitting bodies are separated from each other. The opening of the suction port. Suction port body butterfly and the vacuum cleaner. 2. A suction chamber, which is connected to a vacuum cleaner body containing an electric blower and has a substantially rectangular suction port opened on a lower surface facing a surface to be cleaned, and the suction chamber is provided at both ends in a longitudinal direction of the suction chamber. A case body including a pair of bearings, a plurality of vibrating shafts axially supported by the bearings in the suction chamber of the case body so as to substantially close the suction port, and a tapping element attached to the vibrating shaft. A suction body of an electric vacuum cleaner that vibrates the striking body by a suction force generated by driving the electric blower and strikes a surface to be cleaned located at the suction port to absorb dust. A leak opening communicating with the hitting body and the electric blower on the lower surface of the case body, and closing the leak opening when the lower surface of the case body contacts the surface to be cleaned, The lower surface of the case body is to be cleaned Suction port body of the electric vacuum cleaner, characterized in that a lid member for opening said leakage orifice when away from.