JP3255561B2 - Vacuum cleaner suction tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction device for a vacuum cleaner which is used for sucking dust from a cleaning object such as a carpet, a fold or a blanket or a futon while applying vibration to the object. About.

[0002]

2. Description of the Related Art Cleaning an object to be cleaned while beating it with an electric vacuum cleaner is excellent in that a dust sinking in the object to be cleaned can be beaten out and a dust absorbing effect is high. And
As a structure for hitting an object to be cleaned, there is a structure that utilizes the driving force of an electromagnetic solenoid. However, as described in Japanese Utility Model Publication No. 37-19224 and Japanese Utility Model Publication No. 47-25192, a tapping body is formed by suction pressure. What vibrates is advantageous in that no special drive device is used.

[0003] These publications disclose a technique in which a plurality of striking bodies are provided in a dust suction chamber of a suction tool main body to which a connecting pipe is attached. The dust suction chamber is communicated with the connection pipe and is opened on the lower surface of the suction tool main body. The striking bodies are vertically vibrated by suction pressure exerted through the connecting pipe, and are provided side by side so as to substantially close the dust suction opening.

The technique disclosed in Japanese Utility Model Publication No. 37-19224 is as follows. A plurality of striking bodies are provided in the dust-absorbing chamber of the suction tool main body with both ends thereof held and fixed by springs having different strengths. Then, a suction pressure is applied from the suction pipe connected to the suction tool main body to the inside of the dust suction chamber, and each striker vibrates up and down in the dust suction opening due to a balance between the difference in spring force of the spring and the suction pressure. The object to be cleaned, such as a carpet, which is sucked and floated from the floor surface, is hit, thereby hitting dust and sucking dust.

The technique disclosed in Japanese Utility Model Publication No. 41-25192 is as follows. A plurality of striking bodies constituted by inserting a vibration spring through a plurality of bead are arranged in parallel in the dust suction chamber of the suction tool body, and both ends of each vibration spring of these striking bodies are held and fixed to the suction tool body. I do. Then, a suction pressure is applied from the suction pipe connected to the suction tool main body to the inside of the dust suction chamber, and each striker is vertically moved by a balance between the spring force of the vibration spring and a change in suction pressure in the suction tool main body. By being vibrated, it is sucked into the dust-absorbing opening and beats an object to be cleaned such as a carpet or a tatami mat, whereby the dust is beaten out and sucked.

[0006]

However, such a conventional suction tool for a vacuum cleaner has the following problems.

That is, the tapping body provided in the suction device for a vacuum cleaner has both ends in the length direction fixed to the suction device main body, and vibrates in the vertical direction with the fixed both ends as fulcrums. For this reason, in the portion of the suction tool main body where the both ends of the hitting body are fixed, an impact force is applied by both ends of the hitting body when the hitting body moves upward and when the hitting body moves downward. Then, in the portion of the suction tool body where the both ends of the hitting body are fixed, the holding and fixing of the end of the hitting body are loosened, or the abrasion or breakage occurs, so that the end of the hitting body cannot be securely held and fixed. Vibration may be adversely affected, and good cleaning may not be performed.

Accordingly, a first problem to be solved by the present invention is to alleviate the impact on the portion of the suction tool main body, which fixes both ends of the hitting body, due to the vibration of the hitting body at the initial stage of vibration, and to stabilize the hitting body. It is an object of the present invention to provide a suction device for a vacuum cleaner capable of maintaining vibration.

A second problem to be solved by the invention of the present application is to simply and reliably realize the alleviation of the impact on the portion for fixing both ends of the hitting body in the suction tool main body due to the vibration of the hitting body at the initial stage of vibration. An object of the present invention is to provide a suction device for a vacuum cleaner having a configuration that can be performed.

A third problem to be solved by the invention of the present application is that, at the initial stage of the vibration, the shock can be effectively reduced to a portion of the suction tool main body where both ends of the striking body are fixed by the vibration of the striking body. An object of the present invention is to provide a suction device for a vacuum cleaner.

[0011]

According to the present invention, a suction tool main body to which a connecting pipe is attached is provided with a dust suction chamber having a dust suction opening opened on a lower surface of the main body and communicating with the connecting pipe. It is assumed that a suction tool for a vacuum cleaner is provided in the dust-absorbing chamber, in which a plurality of beaters vibrated by the suction pressure exerted through the connecting pipe to strike the object to be cleaned are arranged side by side so as to substantially close the dust-absorbing opening.

In order to solve the first problem, the suction device for a vacuum cleaner according to the first aspect of the present invention moves to a wall of a dust suction chamber from a stationary position when the hitting body is moved upward.
Striking body at rest position to apply braking force at the beginning of moving
Air from the upper side of the
Initial time when moving from a rest position when moving down the body
From below the striking body in the rest position so as to apply braking force to the
An opening for guiding air to the dust suction chamber is formed.

According to this configuration, when the striking body moves toward the side away from the dust suction opening from the rest position when the striking body vibrates, the striking body is guided from the opening formed in the wall of the dust suction chamber to the dust suction chamber. The movement of the striking body is braked by the blown air, and when the striking body moves from the rest position toward the side approaching the dust suction opening, the striking body is beaten by the air guided to the dust suction chamber from the opening formed in the wall of the dust suction chamber. The movement of the body is braked.

Therefore, the vibration of the hitting body is damped, and the impact of the vibration of the hitting body on the portion of the suction tool main body holding and fixing both ends of the hitting body is reduced. Therefore, the suction tool main body can securely hold and fix both ends of the hitting body for a long period of time, and as a result, stable vibration of the hitting body can be maintained.

According to a second aspect of the present invention, there is provided a suction device for a vacuum cleaner according to the first aspect, wherein the opening is formed in a front wall portion and a rear wall along a vertical direction of the dust suction chamber.
It is formed on at least one of the portions, and is formed with a portion on the side away from the dust suction opening and a portion on the side approaching the dust suction opening from the stationary position of the hitting body.

According to this structure, the air is guided from the portion of the opening formed in the wall of the dust suction chamber that is farther from the dust suction opening than the stationary position of the hitting body to the dust suction chamber, and is initially separated from the dust suction opening of the hitting body. The movement to the side is braked, and the air guided to the dust suction chamber from the portion closer to the dust suction opening than the rest position of the hitting body at the opening is braked at the initial stage to the movement of the beater toward the dust suction opening. You.

Therefore, it is possible to reliably reduce the impact of the vibration of the hitting body on the portion of the suction tool main body that fixes both ends of the hitting body with a simple configuration depending on the position of the opening.

According to a third aspect of the present invention, there is provided a suction tool for a vacuum cleaner according to the first aspect, wherein
The connecting pipe is attached to the longitudinal center of the suction tool body.
The hitting body is elastic at both ends in the longitudinal direction.
Extending along the length direction of the dust suction chamber, and
The opening is formed at a central position in the length direction of the wall of the dust suction chamber.

In general, in a suction device, a connection pipe for applying a suction force to a dust suction chamber of a suction tool main body is connected to a central portion of the dust suction chamber so that the suction force is applied from the longitudinal central portion of the dust suction chamber to the entire dust suction chamber. It has become. The hitting body receives the strongest suction force at the center in the longitudinal direction and vibrates in the vertical direction. For this reason, by forming the opening at the central portion in the longitudinal direction of the dust-absorbing chamber, the braking force by the air guided from this opening is applied to the central portion in the longitudinal direction of the tapping body receiving the strongest suction force. Can be acted upon. Therefore, by applying the braking force of the air guided from the opening to the striking body most effectively and braking the striking body at the initial stage, both ends of the striking body in the suction tool main body due to the vibration of the striking body are fixed. It is possible to effectively reduce the impact on the part.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. As shown in the perspective view of FIG. 1, the vacuum cleaner including the suction tool according to the present embodiment includes a movable vacuum cleaner main body 1 and a main body 1.
A dust suction hose 2 detachably inserted and connected to the suction port of the air conditioner, an operation handle 3 fixed to the tip of the hose 2, and an extension detachably inserted and connected to the tip of the handle 3. It is provided with pipes 4, 5 and a suction tool 6 which is detachably inserted and connected to the distal end of the extension pipe 5 or the distal end of the operation handle 3. An electric blower (not shown) is built in the vacuum cleaner body 1,
The dust collection operation is performed by the operation. The operation handle 3 has a remote control switch for remote control, and the operation of the electric blower is controlled by operating the switch.

The structure of the suction tool 6 will be described with reference to FIGS. 2 and 3, the suction device 6 includes a suction device main body 11, a connection pipe 12, a pair of wheels 13, and a plurality of hitting bodies 81 to 83.

As shown in FIGS. 2 to 11, the suction tool main body 11 is assembled by assembling an upper case 21 and a lower case 22 made of ABS resin or a synthetic resin such as polypropylene with their opening surfaces facing each other. . These two cases 21, 22 are screw receiving bosses 22 d inserted from the lower surface side of the lower case 22 and protruding from the inner surface of the upper case 21.
They are connected to each other by two front screws 23 and two rear screws 24 (see FIG. 5) screwed to (see FIG. 11). The lower surface 11a of the suction tool main body 11 is flat, but the overall shape of the main body 11 is generally a horizontally long cylindrical shape.

As shown in FIGS. 3, 5 and 7, the lower case 22 is formed with a dust chamber 25 extending in the longitudinal direction thereof. The dust suction chamber 25 is a partition 2 having a substantially inverted U-shaped cross section.
6, and the lower surface opening thereof is a dust suction opening 25.
As a, the lower case 22 is opened on the flat lower surface, that is, the lower surface 11a of the suction tool main body 11, extending in the length direction thereof. As shown in FIG. 6, a central partition wall 27 is provided at a substantially central portion of the lower case 22. This partition 27
The partition wall 26 is provided from the partition wall 26 to the center of the rear wall of the lower case 22. The partition wall 26 is wide and narrower toward the rear wall. The ceiling wall of the bulkhead 26 located in the central bulkhead 27 has been removed, whereby the central bulkhead 2
7 communicates with the dust chamber 25.

6, 9 and 11, reference numeral 28 denotes a pair of partition walls extending forward from both side walls of the central partition wall 27 and integrally connected to the center of the front wall of the lower case 22.

As shown in FIG. 6, FIG. 9 and FIG.
7, a central partition wall 29 combined with this is integrally protruded. The front end portions of the two central partition walls 27 and 29 are fitted to each other in a concave and convex manner to be continuous, and a relay chamber 30 is formed between the upper and lower cases 21 and 22.

A vertical rectifying rib 31 is integrally provided in the relay room 30 between the side walls of the central partition wall 29. As shown in FIG. 9, a substantially cylindrical projecting cylindrical portion 32 communicating with the rear end of the relay chamber 30 is integrally provided rearwardly and protrudingly at a central portion in the longitudinal direction of the rear wall of the upper case 21. The connecting pipe 12 is fitted and attached to the cylindrical portion 32.

The connecting pipe 12 is rotatable around the axis of the protruding cylindrical portion 32 and communicates with the dust suction chamber 25 through the relay chamber 30. The connecting pipe 12 is detachably inserted into and connected to the distal end of the extension pipe 5 or the distal end of the operation handle 3 as described above.
Is operated, the suction pressure generated by the electric blower is applied to the dust suction chamber 25.

As shown in FIGS. 10 and 11, a pair of partition walls 34 extending forward from both side walls of the central partition wall 29 are provided on the front inner surface of the upper case 21 in correspondence with the partition walls 28. Have been. These upper and lower partition walls 2
8 and 34 are not in contact with each other, and a ventilation gap 35 is provided between them.
Is formed.

As shown in FIGS. 6, 8 and 12, both ends 21a, 22 in the longitudinal direction of the upper and lower cases 21, 22 are provided.
The bearing grooves 36 are formed correspondingly on the mating surfaces, and the outer surfaces of both end walls 22b of the upper case 21 are
A shaft support 37 in the shape of a letter is formed integrally. The wheel 13 is made of a synthetic resin, has one side surface opened, and has a wheel shaft 13a protruding from the open surface. A flange 13b projecting outward is provided on the outer peripheral surface of the wheel shaft 13a. The wheel 13 has its flanges 13b fitted into the bearing grooves 36 so that the end walls 21a,
The suction tool main body 11 is rotatably attached to both longitudinal ends thereof by being sandwiched between the mating surfaces from above and below.

The wheel 13 has a large diameter substantially the same size as the end of the suction device main body 11, and covers and covers the end surface of the suction device main body 11 in the longitudinal direction. A gap 38 is formed between the peripheral portion.

The suction tool main body 11 is provided with an upper ventilation chamber 39. The ventilation chamber 39 is composed of a pair of partition walls 34 of the upper case 21 and the two walls 34 of the front wall of the upper case 21.
The front wall portion is located between the front wall portion and a vertical front wall portion of the central partition wall 29 facing the front wall portion.

The suction tool main body 11 is provided with an inlet 40 for an intake air passage formed of a plurality of slits and located above the lower surface 11a of the suction tool main body 11, and faces the upper ventilation chamber 39 in this embodiment. It is provided in.

Below the upper ventilation chamber 39, there is a lower ventilation chamber 41.
Is provided. The ventilation chamber 41 includes a pair of partition walls 28 of the lower case 22, a front wall portion located between the two walls 28 of the front wall of the lower case 22, and a vertical wall of the partition 26 facing the front wall portion. It is divided by the front wall portion 22b.

The lower end of the front wall 22b is formed with an outlet 42 for an intake air passage, which will be described later. The outlet 42 is a horizontally long rectangle. As will be described later, the outlet 42 is used when the tapping body 7 moves upward from the rest position at the beginning of vibration, that is, toward the side away from the dust suction opening 25a.
In addition to guiding air to the inside of the dust suction chamber 25 so as to give a braking force to the dust collecting member 1, the striking body 71 moves downward from the rest position at the initial stage of vibration, that is, toward the side approaching the dust suction opening 25a. The air is guided to the inside of the dust suction chamber 25 so as to apply a braking force to the air. For this reason, in this embodiment, the outlet 42 is located above the stationary position of the striking body 71, that is, on the side away from the dust suction opening 25a, and below the wall 22b along the vertical direction of the dust suction chamber 25, ie, the dust suction opening. It has a portion on the side approaching 25a. The outlet 42 is formed at a central position in the length direction of the front wall 22b of the dust suction chamber 25. That is, the upper edge 42a of the outlet 42 is located above the beater 73 of the striking body 71 at the stationary position.

The inlet 40, the upper ventilation chamber 39, the lower ventilation chamber 41, and the outlet 42 form a first intake air passage. The intake air passage communicates with the outside of the relay room 30 via the ventilation gap 35. As shown in FIG. 9, an air filter 43 such as urethane foam having open cells is accommodated in the upper ventilation chamber 39.

As shown in FIGS. 9 and 11, inlets 44 are provided at both ends in the longitudinal direction of the suction tool main body 11, respectively. In the present embodiment, the end wall 2 of the upper case 21
An inlet 44 is formed by a recess provided near the wheel shaft 13a in 1a. Through this inlet 44, an internal space excluding the relay room 30 in the suction tool main body 11 and the outside of the suction tool main body 11 are communicated. ing.

The inlet 44, the internal space of the suction tool body 11, the ventilation gap 35, the lower ventilation chamber 41, and the outlet 42
And form the second intake air path. Entrance 4 of this airway
4 is communicated with the gap 38 via the inside of the wheel 13.

As shown in FIGS. 3, 4B and 5, a pair of grooves 45 forming a third intake path is formed at the lower end of the front wall portion 22b of the lower case 22. This groove 4
The front end of 5 is opened to the front of the lower end of the front wall portion as an entrance 45a, and the rear end is opened to the lower end of the dust suction chamber 25 from the front side as an exit 45b.

As shown in FIG. 3, FIG. 4 (C) and FIG. 5, a groove 47 is formed at the rear part of the lower case 22 on the side of the connection pipe 12, which is partitioned by a wall 48 forming a fourth intake path. .
These grooves 47 are open to the lower surface of the suction tool main body 11 and extend in the front-rear direction. The rear end of the groove 47 is open to the rear wall of the case 22 as an inlet 47a, and the front end of the suction chamber 25 is an outlet 47b. The lower end is open from the rear.

The pair of grooves 47 are formed at the center in the longitudinal direction of the lower case 22. Therefore, the pair of grooves 47 is formed at the central portion in the longitudinal direction of the dust suction chamber 25 where the suction pressure applied through the relay chamber 30 acts most strongly. It communicates with the dust suction chamber 25.

In FIGS. 3, 5 and 6, reference numerals 51 and 52 denote ventilation holes which directly communicate with the relay chamber 30 from the rear portion of the lower case 22 in the longitudinal direction without passing through the dust chamber 25. The ventilation hole 51 communicates with the groove 37, and the ventilation holes 52 are located on both sides thereof.

As shown in FIGS. 3, 5 and 6, the lower surface of the suction tool main body 11 has a guard 5 flush with the lower surface.
3 are provided, for example. These guards 53
Are formed by bridges crossing the dust suction opening 25a in the front-rear direction, and are spaced apart and parallel to each other at the longitudinal center of the dust suction opening 25a. Therefore, the dust suction opening 25a is divided into three openings. The ventilation holes 52 are respectively arranged behind the pair of guards 53.

As shown in FIGS. 3, 5, 6 and 7, reference numeral 71 denotes a first hitting body, 81 denotes a second hitting body, and 91 denotes a second hitting body.
Is a third striking body, which is a dust chamber 25 of the lower case 22.
Are provided so as to vibrate in the vertical direction by suction pressure in parallel along the length direction. These first to third striking bodies 71, 81, 91
Are vibrating lines 72, 82, and 92, a plurality of vibrators 73, 83, 93 in which the vibrating lines 72, 82, and 92 are arranged in a line, and both ends of the vibrating lines 72, 82, and 92. In the portion, there are a pair of beam fixing bodies 74, 84, 94 for fixing a plurality of data 73, 83, 93.

The vibration lines 72, 82 and 92 are made of an elastic metal wire such as a piano wire.
It has a length obtained by adding a length required for holding and fixing both ends by the bearings 101 and 102 to both ends as described later.
Vibration lines 72, 82 of the first and second striking bodies 71, 81
The one whose elastic force is stronger than the elastic force of the other vibration lines 92 is used. The beaters 73, 83, and 93 are formed of short cylinders and are formed using a soft material such as a soft synthetic resin, rubber, or an elastomer.

As shown in FIGS. 5, 6 and 11, bearing fitting portions 103, 1
04, and these bearing fitting portions 103, 10
4 are fitted with bearings 101 and 102, respectively. Each of these bearings 101 and 102 has a pair of front and rear lower bearing holes (not shown) and one upper bearing hole (not shown) located between the pair of lower bearing holes. I have.

Each of the striking bodies 71, 8 thus constructed
1 and 91 are arranged along the length direction such that the tapping bodies 71 and 81 are arranged in parallel on both sides of the hitting body 91 inside the dust suction chamber 25 of the lower case 22.

The first striking body 71 is formed by inserting both ends of the vibration line 72 into lower bearing holes (not shown) of the lower bearing hole (not shown) near the front wall portion 22b of the dust suction chamber 25. Attached to the lower case 22, and the second
The tapping body 81 is attached to the lower case 22 by inserting the ends of the vibration lines 82 into lower bearing holes (not shown) near the rear wall portion of the dust-absorbing chamber among the lower bearing holes (not shown). The third striking body 91 is attached to the lower case 22 by inserting both ends of the vibration line 92 into the upper bearing holes (not shown).

The hitting bodies 71, 8 thus attached
1 and 91, as shown in FIGS.
5, 1 and 81 are located at the same height position, and the beaters 72 and 82 are individually brought close to the front and rear wall portions 22b and 22c of the lower case 22 as shown in FIG. The hitting body 91 of the first and second hitting bodies 71,
The beater 93 is arranged above the upper portion 81 and is close to the upper outer periphery of the beaters 73 and 83 of the hitting bodies 71 and 81.

Accordingly, the beaders 73, 8 of the first to third striking bodies 71, 81, 91 when viewed from below.
Reference numerals 3 and 93 are provided side by side so as to substantially close the dust suction opening 25a. In the state where the suction pressure is not working, the first to third striking bodies 71, 81, 91
Maintain a horizontal posture by the elastic force of 2, 82, 92;
In addition, while the adjacent tapping body may be in contact,
These striking bodies 71, 81, 91 may be provided at the same height without changing the height vertically.

That is, the first to third striking bodies 71,
81, 91 are vibrating lines 72, 82,
92 vibrates vertically with the ends held and fixed to the bearings 101, 102 as fulcrums, and the beaters 73, 83, 93 held by the vibration lines 72, 82, 92 move the same as the amplitude of the vibration lines. It is possible.

As shown in FIGS. 7, 9 and 10, the tapping bodies 71, 8 juxtaposed in the dust suction chamber 25 as described above.
Reference numerals 1 and 91 are located slightly above the dust suction opening 25a. Then, the first to third hit bodies 71, 81,
The dust suction chamber 25 is located between the suction opening 91 and the dust suction opening 25a.
The outlets 42, 45b, 47b of the respective intake air paths are connected to each other.

The operation of the suction device for a vacuum cleaner thus configured will be described.

The suction tool main body 11 is placed on a soft object to be cleaned such as a futon or a sheet, and the dust suction opening 25a of the lower case 22 is brought into contact with the object to be cleaned. When the electric blower built in the vacuum cleaner main body 1 is operated, the suction pressure acts on the dust suction chamber 25 via the hose 2, the connection pipe 33, and the relay chamber 30 of the suction tool main body 11.

Since the dust suction opening 25a of the dust suction chamber 25 is substantially closed by the first to third striking bodies 71, 81, 91, the degree of vacuum inside the dust suction chamber 25 to which the suction pressure by the electric blower acts increases. The first to third striking bodies 71, 81, 91 are sucked and moved upward against the elastic force of each vibrating wire. Therefore, each of the vibration lines 72, 82, 92 of the first to third striking bodies 71, 81, 91 bends toward the relay room 30 with both ends as fulcrums, and the beaters 73, 83, 93 together therewith. Rows bend in the same way.

However, the first and second striking bodies 71,
The elastic force of the vibration lines 81 and 81 is different from the elastic force of the vibration line 92 of the third striking body 91. For this reason, the degree of deflection of the first and second striking bodies 71 and 81 and the degree of flexing of the third striking body 91 are different, and the first and second striking bodies 71 and 81 and the third striking body are different. A gap is created between the first and the second. As a result, the degree of vacuum inside the dust suction chamber 25 is reduced and the first
Or vibration lines 72, 8 of the third striking bodies 71, 81, 91
2, 82 return to the dust suction opening 25a in an attempt to return to the original position by the elastic force.

Therefore, the first to third striking bodies 71,
Beaters 73, 83 and 93 of 81 and 91 strike the object to be cleaned. Thereafter, the first to third striking bodies 71, 81, 9
1 substantially closes the dust suction opening 25a of the dust suction chamber 25. The above-described operation is continuously repeated to dump dust from the object to be cleaned.

Here, the relationship between the action of air guided from the outlet 42 formed in the front wall portion 22b of the dust suction chamber 25 to the dust suction chamber 25 and the operation of the striking bodies 71, 81, 91 at the initial stage of vibration will be described. This will be described with reference to FIG.

As shown by the solid line in FIG.
Reference numerals 81 and 91 are at intermediate positions in the height direction of the outlet 42 when the vehicle is at rest before starting vibration. That is, exit 4
2 is above the stationary position of the beating body 71 (the dust suction opening 25a
The upper edge 42a is located above the beater 73 of the striking body 71 at the stationary position (the side away from the dust suction opening). ing.

As described above, the connection pipe 12 is connected to the dust suction chamber 25.
When suction pressure acts on the air, air is sucked into the dust suction chamber 25 from the first intake passage. That is, the first air intake passage sucks air outside the suction tool main body 11 from the inlet 40 into the upper ventilation chamber 30 of the suction tool main body 11, and guides the air from the outlet 42 through the lower ventilation chamber 41 into the dust suction chamber 25. .
The air enters the interior of the dust suction chamber 25 by being divided into a portion of the opening 42 that is farther from the dust suction opening 25a than the striking body 71 at the stationary position and a portion that approaches the dust suction opening 25a.

As shown by broken lines in FIG. 12, each of the striking bodies 71, 81, and 91 is above the stationary position (the side separated from the dust suction opening 25) by the action of suction pressure at the beginning of vibration.
Move towards. Here, the striking body 71 rises facing the upper opening of the outlet 42. The air flows from a portion of the outlet 42 above the striking body 71 at the stationary position into a space located above each of the striking bodies 71, 81, 91 in the dust suction chamber 25. Therefore, braking is applied to each of the striking bodies 71, 81, and 91 that move upward.
The tapping bodies 71, 81, and 91 are at the upper edge 4 of the outlet 42.
When it exceeds 2a, it is rapidly moved upward by the suction pressure without being affected by air.

As described above, the movement of each of the striking bodies 71, 81, and 91 moving upward at the initial stage of vibration is reduced, and each of the striking bodies 7
Tapping body 7 due to upward movement of 1, 81, 91
Bearings 101, 10 for holding and fixing both ends of 1, 81, 91
2 is reduced.

Next, each of the striking bodies 71, 81, 91 moves from the upper position to the lower position (the side approaching the dust suction opening 25 from the rest position) indicated by the broken line in FIG. Here, the air flows from the outlet 42 to each of the striking bodies 7 in the dust suction chamber 25.
It flows into the space below 1, 81 and 91. Therefore, braking is applied to each of the striking bodies 71, 81, and 91 that move downward. Thereby, each hit body 71, 81,
The movement of the downward movement of 91 is reduced, and each of the striking bodies 71,
Tapping bodies 71, 8 due to the downward movement of 81, 91
The impact on the bearings 101 and 102 that hold and fix both ends of the first and the first 91 is reduced.

As described above, the movement of each of the hitting bodies 71, 81 and 91 at the initial stage of the vibration is reduced, and each of the hitting bodies 7
Tapping body 7 due to upward movement of 1, 81, 91
Bearings 101, 10 for holding and fixing both ends of 1, 81, 91
2 is reduced.

In this way, the movement of the hitting bodies 71, 81, 91 in the vertical direction at the initial stage of the vibration is braked,
Suction device main body 11 due to vibration of striking bodies 71, 81, 91
The impact on the portion for holding and fixing both ends of the hitting body in the above is alleviated. Therefore, the suction tool main body 11 is provided with striking bodies 71, 8
Both ends of the first and the first 91 can be reliably held and fixed for a long period of time, and as a result, stable vibration of the hitting bodies 71, 81 and 91 can be maintained.

In this embodiment, the outlet 42 is connected to the beater 7 of the hitting body 71 whose upper edge 42a is at the rest position.
3, the wall portion 22b along the vertical direction of the dust suction chamber 25 has a portion located above the stationary position of the hitting body and a portion located below. With the outlet 42 having such a configuration,
The tapping bodies 71, 8 in the suction tool main body 11 due to the vibration of the tapping bodies 71, 81, 91 at the initial stage of the vibration by the operation described above.
It is possible to reliably reduce the impact on the portion that fixes both ends of the first and the first 91 with a simple configuration depending only on the position of the outlet 42.

Further, the outlet 42 is formed at the center of the wall of the dust-absorbing chamber in the longitudinal direction. In general, in the suction tool, a connection pipe that applies suction force to the dust suction chamber of the suction tool body 11 is connected to a central portion of the dust suction chamber so that the suction force is applied from the longitudinal center of the dust suction chamber 25 to the entire dust suction chamber 25. It has become. And the striking bodies 71, 81,
91 vibrates by receiving the strongest suction force at its central portion in the longitudinal direction. For this reason, by forming the outlet 42 at the center in the longitudinal direction of the dust suction chamber 25, the braking force by the air guided from the outlet 42 is reduced in the longitudinal direction of the hitting body which receives the strongest suction force. It can act on the central part.

Therefore, at the initial stage of the vibration, the braking force of the air guided from the outlet 42 is most effectively applied to the striking bodies 71, 81, 91 so that the striking bodies 71, 81, 91
, It is possible to effectively reduce the impact on the portion of the suction tool main body 11 that fixes both ends of the tapping bodies 71, 81, and 91 due to the vibration of the tapping body.

By changing the opening area of the outlet 42, the amount of air sucked from the outlet 42 changes and the amplitude of the vibration of the tapping body can be changed.

The invention of each claim is not limited to the above-described embodiment, but can be implemented with various modifications.

For example, the outlet which is an opening for introducing air for damping the vibration of the hitting body is not limited to the above-described embodiment, and may have a configuration shown in FIG. That is, the outlet 42 has a tapered portion 111 that is thicker upward and upward.
It has. The tapping body 71 has a tapered portion 1
Move upward facing 11. At this time, braking is applied to the tapping body 71 by resistance of air guided through the inside of the tapered portion 111 of the outlet 42. The tapping body 71 has a tapered portion 111
When moved to the uppermost end of the, it is rapidly moved upward by suction summer pressure without air resistance. Thus, in this embodiment, the same effect as in the above-described embodiment can be obtained.

In the above-described embodiment, the opening is provided in the front wall of the dust suction chamber using the outlet of the first intake passage. However, the present invention is not limited to this. The outlet may be provided using the outlet of the intake passage, or the outlet may be provided on the rear wall of the dust suction chamber by using the outlet of another intake passage. Further, openings may be provided in both the front wall portion and the rear wall portion of the dust suction chamber. In short, the form of the opening is not specified.

[0072]

As described above, the vacuum cleaner suction tool of each invention of the present application has the following effects.

According to the first aspect of the present invention, the movement of the hitting body in the vertical direction at the initial stage of the vibration is braked by the air guided to the dust sucking chamber from the opening formed in the wall of the dust sucking chamber. The impact on the portion of the suction tool main body that holds and fixes both ends of the hitting body due to the vibration of the suction tool is reduced. Therefore, the suction tool main body can securely hold and fix both ends of the hitting body for a long period of time, and as a result, stable vibration of the hitting body can be maintained.

According to the second aspect of the present invention, at the time of initial vibration of the hitting body, the impact on the portion of the suction tool main body at which both ends of the hitting body are fixed by the vibration at the initial stage of vibration of the hitting body is reduced by the position of the opening. Can be reliably realized with a simple configuration that depends only on.

According to the third aspect of the present invention, the opening is formed at the center of the dust-absorbing chamber in the longitudinal direction at the initial stage of the vibration of the hitting body, so that the braking force by the air guided from this opening is minimized. It can act on the central part in the longitudinal direction of the tapping body which receives a strong suction force. Therefore, the both ends of the tapping body in the suction tool main body due to the vibration of the tapping body are fixed by applying the braking force by the air guided from the opening at the initial stage of vibration to the tapping body in the most effective manner to brake the tapping body. It is possible to effectively reduce the impact on the part.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the overall configuration of a vacuum cleaner including a suction tool according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a configuration of the suction tool according to the embodiment when viewed from above.

FIG. 3 is a perspective view showing the configuration of the suction tool according to the embodiment as viewed from below.

FIG. 4A is a plan view showing a configuration of a suction tool according to the embodiment. (B) is a front view which shows the structure of the suction tool which concerns on the embodiment. (C) is a front view which shows the structure of the suction tool which concerns on the embodiment.

FIG. 5 is a bottom view showing the configuration of the suction tool according to the embodiment.

FIG. 6 is a plan view showing the configuration of a lower case of the suction tool according to the embodiment.

FIG. 7 is a sectional view taken along line XX in FIG.

FIG. 8 is a side view showing the configuration of the suction tool according to the embodiment.

FIG. 9 is a sectional view taken along the line ZZ in FIG. 4 (B).

FIG. 10 is a sectional view taken along the line YY in FIG. 4 (B).

FIG. 11 is a perspective view showing an upper case and a lower case of the suction tool according to the embodiment.

FIG. 12 is an enlarged cross-sectional view showing a suction air outlet and a tapper of the dust suction chamber according to the embodiment.

FIG. 13 is an enlarged sectional view showing a suction air outlet and a tapping body of a dust suction chamber according to a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Vacuum cleaner main body, 11 ... Suction tool main body, 25 ... Dust chamber, 25a ... Dust suction opening, 42 ... Exit, 42a ... Upper edge of an exit, 53 ... Guard, 71 ... Tapping body, 72 ... Vibration line, 73 ... Beater, 81: Tapping body, 82: Vibration line, 83: Beater, 91: Tapping body, 92: Vibration line, 93: Beater, 111: Tapered portion.

Continuation of the front page (56) References JP-B 47-18479 (JP, B1) JP-B 37-19224 (JP, Y1) JP-B 44-12388 (JP, Y1) JP-B 41-14467 (JP , Y1) J. 41-25192 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) A47L 9/04

Claims (3)

(57) [Claims] 1. A suction tool main body to which a connecting pipe is attached,
A dust suction chamber having a dust suction opening opened on the lower surface of the main body and communicating with the connection pipe is provided, and has an elasticity which is vibrated up and down by a suction pressure exerted through the connection pipe and hits the object to be cleaned. In a suction device for a vacuum cleaner provided in the dust-absorbing chamber by arranging a plurality of tapping bodies in parallel so as to substantially close the dust-absorbing opening, the wall portion of the dust-absorbing chamber includes an upper-side movement of the tapping body.
To apply the braking force at the beginning of moving from the rest position
When air is guided into the dust-absorbing chamber from above the striking body at the stationary position
In both cases, when the hit body is moved downward,
From the rest position to apply braking force during the initial
An inlet for an electric vacuum cleaner , wherein an opening for guiding air from below the hitting body to the dust suction chamber is formed. 2. The apparatus according to claim 1, wherein the opening is formed along a vertical direction of the dust chamber.
Formed on at least one of the front wall portion and the rear wall portion, and
2. The suction tool for a vacuum cleaner according to claim 1, wherein the suction tool is formed with a portion on a side away from the dust suction opening from a rest position of the hitting body and a portion on a side approaching the dust suction opening. 3. 3. The connecting pipe is provided in a length direction of the suction tool main body.
At the center in the direction of
Extends along the length of the supported and elastic dust-absorbing chamber.
2. The suction tool for a vacuum cleaner according to claim 1, wherein the opening is formed at a central position in a length direction of a wall of the dust suction chamber. 3.