JPH0947386A - Suction tool for electric vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction tool for an electric vacuum cleaner capable of guaranteeing the vibrating operation of a hitting body at the time of cleaning not only a floor surface such as a TATAMI (rush mat) but also a soft surface to be cleaned such as a FUTON (thick bedquilt) and improving a traveling performance for the surface to be cleaned. SOLUTION: As for this suction tool 6, a suction tool main body 11 is provided with a dust suction room having a dust suction opening 25a on the lower surface 11a of the main body and the plural hitting bodies 14-16 for hitting the surface to be cleaned by being vibrated by suction pressure exerted to the dust suction room are arranged so as to almost close the dust suction opening and provided inside the dust suction room 25. In this case, a guard 53 for obstructing the suction of the surface to be cleaned into the dust suction room 25 is formed on the dust suction opening 25a facing the hitting bodies 14-16. Thus, the surface to be cleaned such as the surface cloth of the FUTON stuck to the dust suction opening 25a is prevented from being sucked deep inside the dust suction room 25 and stuck to the hitting bodies 14-16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner used for sucking dust on a surface of a carpet, a fold, a blanket, a futon, a curtain or the like to be struck and vibrated while vibrating. Regarding the suction device.

[0002]

2. Description of the Related Art Cleaning an electric vacuum cleaner while striking the surface to be cleaned is advantageous in that the dust sunk on the surface to be cleaned can be expelled, so that the dust absorbing effect is high. And
As a structure for hitting the surface to be cleaned, there is a structure that utilizes the driving force of an electromagnetic solenoid. However, as described in JP-B-37-19224 and JP-B-41-25192, a hitting body is hit by a suction pressure. The vibrating device is advantageous in that no special driving device is used.

These publications describe a technique in which a plurality of hitting bodies are provided in the dust suction chamber of the suction tool body to which the connecting pipe is attached. The dust collection chamber communicates with the connection pipe and is opened on the lower surface of the suction tool body. The hitting bodies are vibrated in the vertical direction by the suction pressure exerted through the connecting pipe, and are arranged side by side so as to substantially close the dust suction openings.

According to the technique disclosed in Japanese Utility Model Publication No. 37-19224, both ends of each hitting body are supported by springs having different strengths, and the hitting bodies are vertically moved by the balance between the spring force and the suction pressure. The surface to be cleaned such as a carpet that is vibrated and sucked in the dust suction opening is struck, whereby the dust is struck out to absorb the dust.

In the technique disclosed in Japanese Utility Model Publication No. 41-25192, each hitting body has a plurality of beads attached to a vibrating spring, and the spring force and the change in suction pressure in the suction tool body balance each other. The hitting body is vibrated in the vertical direction to hit the surface to be cleaned such as a carpet or a tatami mat that is sucked in the dust suction opening, thereby knocking out the dust to suck the dust.

The dust suction openings of these conventional suction tools are formed as a single rectangular opening formed over substantially the entire area of the lower surface of the suction tool body except the peripheral portion.

[0007]

Such a conventional suction tool was developed mainly for cleaning floors such as carpets and tatami mats, and it is necessary to absorb dust from soft surfaces to be cleaned such as futons and sheets. Is not considered. However, in recent years, a futon or the like has been considered as a cleaning target, and it is desirable to clean the cleaning target while knocking out dust contained therein.

However, when a soft surface to be cleaned such as a futon is cleaned with the conventional suction tool, the cloth or the like on the surface of the futon is easily sucked over the entire single dust suction opening,
It is deeply sucked into the suction tool and sticks to each hitting body. Since the surface to be cleaned of the futon, which is attached to the futon in this way, interferes with the vibration motion of each hitting body, the conventional suction tool has a problem that it is not suitable for cleaning a soft surface to be cleaned such as a futon.

Moreover, since the surface to be cleaned such as the cover of the futon is deeply sucked into the inside of the suction tool as described above, that portion becomes a great resistance when the suction tool is run, There is a problem that the running property on the surface to be cleaned is poor. From this point as well, the conventional suction tool is not suitable for cleaning a soft surface to be cleaned such as a futon.

Further, since the conventional suction tool does not take any measures to prevent the hitting body from being removed from the dust collecting opening, each hitting body passes through the dust collecting opening due to mischief or the like. When pulled like this, there is a problem that both ends of the hit and curved hitting body come out of the fitted bearing holes, and the hitting body is easily disengaged.

Therefore, the first problem to be solved by the present invention is that the vibrating motion of the hitting body can be assured not only for cleaning the floor surface such as a tatami mat but also for a soft surface to be cleaned such as a futon. An object of the present invention is to provide a suction tool for an electric vacuum cleaner that can improve the traveling property on a cleaning surface.

A second problem to be solved by the present invention is to provide a suction tool for an electric vacuum cleaner having a simple structure for solving the first problem.

A third problem to be solved by the present invention is, in solving the first problem, the traveling property with respect to the surface to be cleaned can be further improved and the careless removal of the hitting body can be prevented. An object is to provide a suction tool for an electric vacuum cleaner.

A fourth problem to be solved by the present invention is, in solving the first problem, the traveling property with respect to the surface to be cleaned can be further improved and the careless removal of the hitting body can be prevented. Moreover, it is an object of the present invention to provide a suction tool for an electric vacuum cleaner that can substantially prevent a non-suctionable area from being formed in the dust suction opening.

[0015]

According to the present invention, a main body of a suction tool is provided with a dust suction chamber having a dust suction opening which is opened on a lower surface of the main body, and the suction tool is vibrated by a suction pressure exerted on the dust suction chamber to be cleaned. It is premised on a suction tool for an electric vacuum cleaner in which a plurality of striking bodies for striking surfaces are arranged in the dust chamber so as to substantially close the dust suction opening.

In order to solve the first problem, the invention of claim 1 is provided with a guard, which opposes the hitting body, at the dust suction opening for obstructing suction of the surface to be cleaned into the dust suction chamber. It is a thing.

According to the first aspect of the present invention, since the guard provided in the dust suction opening interferes with the suction of a soft surface to be cleaned such as the cover cloth of the futon into the dust collection chamber by the stopper action, the guard is provided in the dust collection opening. It is possible to prevent the suctioned surface to be cleaned from being sucked deep inside the dust collection chamber and sticking to the hitting body in the dust collection chamber.

Further, in order to solve the second problem, the invention of claim 2 provides the guard as a bridge laid across the opposite opening edges of the dust suction opening. This bridge may be installed over the opening edges before and after the dust suction opening, or may be installed over the left and right opening edges.

According to the second aspect of the present invention, since the guard is formed by the bridge, the structure is simple and can be formed integrally with the suction tool body.

In order to solve the third problem, the invention of claim 3 provides the guard extending in the front-rear direction of the suction tool body.

According to the third aspect of the present invention, when the suction tool body is moved in the front-rear direction, the guard extending in the same direction acts as a sled, so that the traveling property on the surface to be cleaned can be further improved. Further, since the guard intersects at right angles with the axial direction of the plurality of hitting bodies installed in the dust collecting chamber and is provided below these hitting bodies, the hitting body is pulled in an attempt to take out the hitting bodies from the dust suction opening. In this case, the guard not only restricts the pulling position to make it difficult to pull, but also serves as a stopper for the pulled hitting body to limit the bending of the hitting body to a small extent. This prevents the hitting body from being removed.

In order to solve the above-mentioned fourth problem, the invention of claim 4 is characterized in that the guard is a bridge which extends over the front and rear opening edges of the dust suction opening facing each other and extends in the front-rear direction. At least one of the vicinity of the front and rear ends is provided with an auxiliary dust suction opening that is opened to the lower surface of the suction tool body and exerts the suction pressure.

According to the fourth aspect of the present invention, when the suction tool body is moved in the front-rear direction, the guard extending in the same direction acts as a sled, so that the traveling property on the surface to be cleaned can be further improved. Further, since the guard intersects at right angles with the axial direction of the plurality of hitting bodies installed in the dust collecting chamber and is provided below these hitting bodies, the hitting body is pulled in an attempt to take out the hitting bodies from the dust suction opening. In this case, the guard not only restricts the pulling position to make it difficult to pull, but also serves as a stopper for the pulled hitting body to limit the bending of the hitting body to a small extent. This prevents the hitting body from being removed. In addition, in the structure with the guard composed of the bridge, although the dust cannot be absorbed at the part of the guard, the auxiliary dust suction opening provided on the extension line sucks the dust left behind by the guard composed of the bridge. it can.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. As shown in the perspective view of FIG. 1, an electric vacuum cleaner including a suction tool according to the present embodiment includes a movable electric vacuum cleaner body 1 and a dust suction that is detachably inserted and connected to a suction port of the main body 1. Hose 2
And an operation handle 3 fixed to the tip of this hose 2.
And extension pipes 4 and 5 which are detachably inserted and connected to the tip of the handle 3, and a suction tool 6 which is detachably inserted and connected to the tip of the extension pipe 5 or the tip of the operation handle 3. Is prepared. The electric vacuum cleaner body 1 has a built-in electric blower (not shown), and the dust suction operation is performed by its operation. The operation handle 3 has a remote control switch for remote operation, and the operation of the switch controls the operation of the electric blower.

The construction of the suction tool 6 will be described with reference to FIGS. The suction tool 6 includes a suction tool body 11, a connecting pipe 12, a pair of wheels 13, and a plurality of hitting bodies 14 to 16.
And

As shown in FIGS. 2, 4 and 6, the suction tool body 11 includes an upper case 21 and a lower case 22 made of a synthetic resin such as ABS resin or polypropylene.
It is assembled by matching the opening faces. These two cases 21 and 22 are inserted from the lower surface side of the lower case 22 and screwed into a screw receiving boss 21b (see FIG. 6) projectingly provided on the inner surface of the upper case 21. It is connected by two screws 24 (see FIG. 3) on the side. Although the lower surface 11a of the suction tool body 11 is flat,
The overall shape of the main body 11 is a generally oblong cylinder shape, and is bulged toward the central portion in the longitudinal direction, so that even when a futon or the like is applied to the outer peripheral surface, it easily slips off.

As shown in FIGS. 4 and 5, the lower case 22 is provided with a dust suction chamber 25 extending in the longitudinal direction thereof. The dust collection chamber 25 is partitioned by a partition wall 26 having a substantially U-shaped cross section, and the lower surface opening thereof serves as the dust collection opening 25a, that is, the flat lower surface of the lower case 22, that is, the suction tool body 1
The lower surface 11a of the No. 1 is opened so as to extend in the longitudinal direction. As shown in FIG. 6, a central partition wall 27 is provided at a substantially central portion of the lower case 22. The central partition wall 27 is provided from the partition wall 26 to the central portion of the rear wall of the lower case 22. The central partition wall 27 is wide on the partition wall 26 side and narrower on the rear wall side. The ceiling wall portion of the partition wall 26 located inside the central partition wall 27 is removed, so that the inside of the central partition wall 27 and the dust collection chamber 25 are communicated with each other. 28 in FIG.
Are a pair of partition walls extending forward from both side wall portions of the central partition wall 27 and integrally connected to the central portion of the front wall of the lower case 22.

The upper case 21 as shown in FIGS.
A central partition wall 29, which corresponds to the central partition wall 27 and is combined with the central partition wall 27, is integrally provided on the inner surface of the central portion in the longitudinal direction. The front ends of the two central partition walls 27 and 29 are fitted into and recessed from each other so as to be continuous with each other, whereby a relay chamber 30 is formed between the upper and lower cases 21 and 22. The relay chamber 30 has a vertical rectifying rib 3 extending between the side walls of the central partition 29.
1 are provided integrally. As shown in FIG. 6, on the inner surface of the front portion of the upper case 21, a pair of partition walls 34 corresponding to the partition walls 28 and extending forward from both side wall portions of the central partition wall 29 are provided.

As shown in FIG. 4, a substantially cylindrical projecting cylinder portion 32, which communicates with the rear end of the relay chamber 30, is integrally projecting rearward at the center of the rear wall of the upper case 21 in the longitudinal direction. The connecting pipe 12 is fitted and attached to the tubular portion 32. The connecting pipe 12 is rotatable around the axis of the projecting tubular portion 32, and communicates with the dust suction chamber 25 through the relay chamber 30. The connection pipe 12 is detachably inserted and connected to the tip end of the extension pipe 5 or the tip end of the operation handle 3 described above. Therefore, when the electric vacuum cleaner body 1 is operated, the suction pressure generated by the electric blower thereof. Are allowed to reach the dust collection chamber 25.

As shown in FIGS. 5 and 6, bearing grooves 36 are formed correspondingly on the mating surfaces of the longitudinal end walls 21a and 22a of the upper and lower cases 21 and 22, respectively. A shaft support 37 having an inverted U-shape is integrally formed on the outer surface of each end wall 21a. The wheel 13
Is made of synthetic resin and has one side surface opened, and has a wheel shaft 13a protruding from this open surface. A flange 13b protruding outward is provided on the outer peripheral surface of the wheel shaft 13a. In these wheels 13, the flanges 13 b are fitted into the bearing grooves 36 so that both end walls 21
By sandwiching between the mating surfaces of a and 22a from above and below,
The suction tool body 11 is rotatably attached to both longitudinal ends thereof. In this mounted state, the shaft support 37 is fitted to the wheel shaft 13a from above. The wheel 13 has a large diameter that is substantially the same size as the end shape of the suction tool body 11, and covers the end surface of the suction tool body 11 in the longitudinal direction. The rotation of the wheels 13 facilitates the movement of the suction tool 6 on the surface to be cleaned.

As shown in FIG. 4, the suction tool body 11 is provided with an upper ventilation chamber 39. This ventilation chamber 39
Is a pair of partition walls 34 of the upper case 21 and the upper case 2
1 front wall 21c and a vertical front wall portion 29 of the central partition wall 29
It is divided by a and. The suction tool body 11 is provided with an inlet 40 of a first intake air passage, which will be described later, located above the lower surface 11a thereof. The inlet 40 is formed by a plurality of slits arranged in parallel as shown in FIG.

As shown in FIG. 4, a lower ventilation chamber 41 is provided below the upper ventilation chamber 39. This ventilation chamber 4
Reference numeral 1 denotes a pair of partition walls 28 of the lower case 22, a front wall 22c of the lower case 22, and a vertical front wall portion 2 of the central partition wall 27.
It is partitioned with 7a. An outlet 42 of a first intake air passage, which will be described later, is formed at the lower end of the front wall portion 27a. The outlet 42 is a horizontally long rectangle.

The inlet 40, the upper ventilation chamber 39, the lower ventilation chamber 41, and the outlet 42 form a first intake air passage. An air filter 43 such as urethane foam having open cells is housed in the upper ventilation chamber 39 of this air passage.

As shown in FIGS. 2 and 3, a pair of grooves 45 forming a second intake path are formed at the lower end of the front wall 22c of the lower case 22. The front end of this groove 45 is the entrance 4
5a is opened to the front surface of the lower end portion of the front wall 22c, and
The rear end is opened from the front side to the lower end of the dust collection chamber 25 as an outlet 45b. A recess 46 is formed in the lower case 22 so as to be continuous with the groove 45 and through which the front screw 23 passes.

As shown in FIGS. 2 and 3, a pair of grooves 47, which are close to each other and form a third intake path, are formed in the rear portion of the lower case 22 on the connecting pipe 12 side. These grooves 47 are opened in the lower surface of the suction tool body 11 and extend in the front-rear direction, and the rear end thereof serves as an inlet 47a and serves as the lower case 22.
The front end is opened to the lower end of the dust collection chamber 25 from the rear side as an outlet 47b while being opened to the rear wall.

A rib-shaped sled wall 48 extending in the front-rear direction is integrally provided between the pair of grooves 47. The front and rear ends of the sled wall 48 are curved. The sled wall 48 improves the running property of the suction tool 6 in the front-rear direction. 2 and 3, reference numeral 49 is a recess for communicating with the upper side of the groove 47, which is provided in the rear portion of the lower case 22 for preventing skin thinning, and 50 is a pair of grooves 47 sandwiching the recess 47 for preventing skin thinning. It is a recess for.

2 to 5, reference numeral 51 denotes a ventilation hole provided directly from the rear portion of the central portion of the lower case 22 in the longitudinal direction without directly passing through the dust suction chamber 25 to the relay chamber 30.
These vent holes 51 are formed so as to communicate with the upper side of the groove 47. 2 to 5, reference numeral 52 is an auxiliary dust suction opening provided directly from the rear portion of the central portion of the lower case 22 in the longitudinal direction without passing through the dust suction chamber 25 to the relay chamber 30. It is provided on both sides of the pair of grooves 47 with the pair of grooves 47 interposed therebetween. These vent holes 51 and auxiliary dust suction openings 5
2 is provided to suck air when the suction tool 6 is separated from the surface to be cleaned, and to suppress the vibration operation of the hitting bodies 14 to 16 which will be described later. And these ventilation holes 5
1 and the rectifying ribs 3 directly above the auxiliary dust suction opening 52.
1 is facing. With this rib 31, the dust collection chamber 25
A large vortex is prevented from winding in the upper part of the relay chamber 30 while the intake air flow flowing from the connection pipe 12 to the connection pipe 12 and the intake air flow flowing from the ventilation hole 51 and the auxiliary dust suction opening 52 to the connection pipe 12 are mixed.

As shown in FIGS. 2 to 5, the lower surface 11a of the suction tool body 11 is provided with at least one, for example, two guards 53 which are flush with the lower surface 11a. These guards 53 are formed by bridges that extend over the front and rear opening edges of the dust suction opening 25a that face each other and extend in the front-rear direction. Has been done. Therefore, the pair of guards 53 are provided with the hitting bodies 14 to 16 described later.
It intersects at right angles with the axial direction of and extends in the front-back direction. Therefore, the dust suction opening 25a is divided into three openings. The auxiliary dust suction openings 52 are arranged at positions near the rear ends of the pair of guards 53, that is, at positions near the rear side in the extension direction of the guards 53. The width of this opening 52 is larger than the width of the guard 53.

As shown in FIGS. 3 and 4, a protruding portion 54 is provided on the lower surface 11a of the suction tool body 11. The protruding portion 54 is formed by a portion horizontally protruding rearward from the lower end of the front wall 22c of the lower case 22, and is integrally connected to the front end portions of the pair of guards 53.

The protruding portion 54 thus formed so as to protrude toward the dust suction opening 25a has the lower surface 11a of the lower case 22.
The outlet 4 is flush with the lower surface 11a.
Covering 2. As a result, as shown in FIG. 3, of the three dust suction openings divided by the guard 53, the width of the central suction opening is narrower than the width of the other dust suction openings.

As shown in FIGS. 3 and 5, the dust collection chamber 2
Bearings 61 and 62 molded separately from the lower case 22 are individually attached to both ends in the longitudinal direction of the bearing 5. Each of the bearings 61 and 62 has a pair of front and rear lower bearing holes and one upper bearing hole located therebetween. A plurality of, for example, the first to third tapping bodies 14 to 16 extending in the longitudinal direction are housed in the dust collection chamber 25 so as to vibrate in the vertical direction by suction pressure.

That is, as shown in FIGS. 4 and 5, the hitting bodies 14 to 16 are vibrating shafts 14a to 16a made of a spring wire material such as a piano wire, and the shafts 14a to 16a.
It is formed of a plurality of beaters 14b to 16b through which a is inserted. The beaters 14b to 16b are made of, for example, short tubes, and are made of rubber, elastomer, or the like to reduce operating noise. As the vibrating shafts 14a and 15a, those whose elastic force is stronger than that of the vibrating shaft 16a are used. The beaters 14 to 16 may be one beater instead of plural beaters.

The hitting body 14 is attached by inserting both ends of the vibrating shaft 14a into the lower bearing holes of the lower bearing holes (not shown) near the front wall 26a of the partition wall 26. The vibration shaft 15a is attached by inserting both ends of the vibration shaft 15a into lower bearing holes (not shown) near the rear wall 26b of the partition wall 26. The remaining hitting bodies 16 are attached by inserting both ends of the vibration shaft 16a into the upper bearing holes (not shown).

The hitting bodies 14 to 16 thus mounted
Among them, the hitting bodies 14 and 15 are located at the same height position and individually approached to the front and rear walls 26a and 26b, and the hitting body 16 is arranged above the hitting bodies 14 and 15. The outer circumferences of the upper portions of the hitting bodies 14 and 15 are close to each other. As a result, when viewed from below, the hitting bodies 14 to 16 are arranged side by side so as to substantially close the dust suction opening 25a. When the suction pressure is not working, each of the hitting bodies 14 to 16 maintains a horizontal posture due to its elastic force. The adjacent hitting bodies 14 to 16 may be in contact with each other, and the hitting bodies 14 to 16 may be provided at the same height position without changing the height position vertically.

As shown in FIG. 4, the hitting bodies 14 to 16 arranged side by side in the dust collecting chamber 25 as described above have the dust collecting openings 25a.
It is located slightly above. And this hit body 1
The outlets 42, 45b, 47b of the respective intake air passages are communicated with the dust collection chamber 25 between 4 to 16 and the dust collection opening 25a.

When the electric vacuum cleaner body 1 is operated in the above structure, the suction pressure exerted on the suction tool 6 which is in communication with the dust collection chamber through the dust suction hose 2 and the extension tubes 4 and 5, is the suction pressure. Since it spreads over the entire area of the dust collection chamber 25 through the relay chamber 30 in the tool 6, cleaning is performed by striking the surface to be cleaned such as the futon and the sheets laid on the slapping bodies 14 and 15 as follows. be able to.

That is, since the dust suction opening 25a of the dust suction chamber 25 of the suction tool 6 is substantially closed by the plurality of hitting bodies 14 to 16, the dust suction chamber 2 is affected by the influence of the suction pressure.
As the degree of vacuum in No. 5 increases, the hitting bodies 14 to 16 warp so as to be sucked at substantially the same time against the elastic force of the vibration shafts 14a to 16a and to be convex upward.

By the way, the elastic force of the vibrating shaft 16a of the hitting body 16 is equal to that of the vibrating shafts 14a, 1 of the hitting bodies 14, 15 on both sides thereof.
Since it is smaller than the elastic force of 5a, the warp amount of the hitting body 16 becomes larger than the warp amount of the hitting bodies 14 and 15 from a certain point after the suction is started, and the adjacent hitting body 16 and the hitting body 14,
The gap between the dust collection chamber 2 and the
The degree of vacuum in the upper part of each of the hitting bodies 14 to 16 in 5 decreases.

Therefore, each of the hitting bodies 14 to 16 is restored by its elastic force, and at the same time, the inertial force causes the hitting bodies 14 to 16 to warp so as to be convex downward, thereby sucking in the dust suction opening 25a. Hit the surface to be cleaned, such as the cover of the futon attached. In this case, due to the difference in elastic force,
The hitting bodies 14 and 15 are faster than the hitting body 16 and are warped and deformed downward to perform the hitting operation (this state is shown in FIG. 5). The striking action on the surface to be cleaned is hindered by the striking bodies 14, 15.

After the hitting of the surface to be cleaned as described above, each of the hitting bodies 14 to 16 returns to the original position where it substantially closes the dust suction opening 25a again. Therefore, the above operation is repeated and each hitting body 14 is repeated. ~ 16 vibrates vertically. Thereby, dust can be absorbed while hitting the surface to be cleaned. In the dust absorption accompanied by the beating of the surface to be cleaned, the dust on the surface to be cleaned is ejected by the beating, so that the dust absorbing effect is high.

In the above dust collecting operation, due to the suction pressure exerted on the dust collecting chamber 25, not only the soft cleaning surface such as the surface cloth of the futon or the sheets is sucked into the dust collecting opening 25a of the suction device 6, but also the dust collecting chamber 25. It receives a suction force that tries to penetrate deeply into 25. However, since the pair of guards 53 made of bridges are provided in the dust suction opening 25a, the stopper action of the guards may prevent a soft surface to be cleaned, such as the surface cloth of the futon, from being deeply sucked into the dust suction chamber 25. it can. Therefore, the soft surface to be cleaned has a dust suction opening 2
5a is sucked, but is not sucked deep inside the dust collection chamber 25.

In other words, the soft surface to be cleaned is held in a state of being spaced apart from each of the hitting bodies 14 to 16, and the dust suction openings 25a are formed in these hitting bodies 14 to 16.
It can prevent sticking from the side. Therefore, each beating body 14-
The vibrating operation of 16 is not hindered, and each of the hitting bodies 14 to 16 is vibrated reliably, and dust can be absorbed while striking the soft surface to be cleaned that is sucked and stuck to the dust suction opening 25a. Further, as described above, since the surface to be cleaned is not sucked into the interior of the dust suction chamber 25, the resistance of the surface to be cleaned when moving the suction tool 6 can be reduced, thereby improving the traveling property.

Since the guard 53 is formed of a bridge, its structure is simple and the suction tool body 1
The lower case 22 of 1 can be integrally molded.

Further, the suction tool 6 is mainly moved in the front-rear direction, and this direction coincides with the extending direction of the pair of guards 53. Therefore, when the suction tool 6 is slid in the front-back direction along the surface to be cleaned, the suction tool body 11
The pair of guards 53, which are flush with the lower surface 11a of the, act as sleds, whereby the traveling property of the suction tool 6 with respect to the surface to be cleaned can be further improved. Moreover, in the present embodiment, since the lower case 22 has the sled wall 48 located at the center portion in the width direction, the traveling property of the suction tool 6 with respect to the surface to be cleaned can also be improved by this.

By the way, as described above, a plurality of hitting bodies 1
The guards 53 provided to guarantee the vibration operations of 4 to 16 are formed of bridges extending in the front-rear direction, so that dust cannot be absorbed at these guards 53. However, since the auxiliary dust suction opening 52 is provided correspondingly on the rear side of the extension line of these guards 53, the suction device 6
The dust that has been left unsucked by the guard 53 formed of a bridge when the vehicle is moved forward can be sucked directly into the relay chamber 30 through the auxiliary dust suction opening 52. Therefore, it is possible to prevent a substantially non-dust-capable region from being formed in the dust-collecting opening 25a having the guard 53 formed of a bridge that prevents dust collection.

Further, according to the suction tool 6 having the above-mentioned structure, there is a possibility that the hitting bodies 14 to 16 are pulled so as to be bent downward in an attempt to take them out from the dust suction opening 25a. . However, as described above, the pair of guards 53 are provided below the hitting bodies 14 to 16 intersecting at right angles with the axial directions of the plurality of hitting bodies 14 to 16 contained in the dust suction chamber 25. Therefore, the position of the pull can be limited by these guards 53 to make it difficult to pull. In addition, the pair of guards 53 serve as stoppers for the pulled hitting bodies 14 to 16, and the bending of these hitting bodies 14 to 16 can be limited to a small amount. Therefore, it is possible to prevent the hitting bodies 14 to 16 from being accidentally removed from the dust suction opening 25a due to mischief or the like.

In the dust suction operation described above, since the soft surface to be cleaned such as the futon and the sheet is sucked into the dust suction opening 25a of the suction tool 6, the whole dust suction opening 25a is sucked in some cases. It is almost sealed by the surface to be cleaned,
Intake of air through the dust suction opening 25a may be extremely reduced. However, even in such a situation, it is possible to secure the intake air to the dust collecting chamber 25 passing through each of the hitting bodies 14 to 16 as described below, so that each of the hitting bodies 14 to 16 can be operated reliably.

That is, by the suction pressure exerted through the connecting pipe 12, the first intake air passage sucks the air outside the suction tool body 11 from the inlet 40 and passes it through the air filter 43 in the upper ventilation chamber 39 to purify it. After that, via the lower ventilation chamber 41 directly below it, from the outlet 42 located between the dust suction opening 25a opened on the lower surface of the suction tool body 11 and each of the tapping bodies 14 to 16, the tapping bodies 14 to 16 are discharged. Supply to the lower side. In addition, the groove 45 forming the second intake air passage sucks in air outside the suction tool body 11 from the inlet 45a at the front end thereof, passes it through the lower surface of the suction tool body 11 from the front side, and taps it from the outlet 45b at the rear end. Supply to the underside of the body 14-16. Similarly, the groove 47 forming the third intake air passage sucks in air outside the suction tool body 11 from the inlet 47a at the rear end thereof, passes it through the lower surface of the suction tool body 11 from the rear side, and taps it from the outlet 47b at the front end. Supply to the underside of the body 14-16.

Moreover, since the outlet 42 of the first intake air passage is covered with the protruding portion 54 provided on the lower surface 11a of the suction tool body 11 as viewed from the lower surface 11a side, the spacer function of the protruding portion 54 is improved. By the surface to be cleaned which is sucked into the dust suction opening 25a by the above, the outlet 4 of the first intake air passage is
2 can be reliably prevented from being blocked, and thus the first
Reliable intake of outside air from the intake air passage.

Therefore, as described above, when the entire dust suction opening 25a is blocked by sucking a soft cleaning surface such as a futon, the outside air passing through at least one of the intake air passages is not sucked. In this way, it is possible to secure the intake air that passes through the hitting bodies 14 to 16 from below. Therefore, in cleaning not only the floor surface such as tatami mat but also the soft surface to be cleaned such as a futon, the vibrating operation of the striking bodies 14 to 16 can be continued to knock out the dust on the surface to be cleaned and absorb the dust. Tube 12
It is possible to secure the air volume for the electric blower in the electric vacuum cleaner body 1 communicated with the electric vacuum cleaner body 1 and reduce the load on the electric vacuum cleaner body 1 side.

7 and 8 show a second embodiment of the present invention. The second embodiment is different from the first embodiment only in the arrangement of the auxiliary dust suction openings, and other configurations are shown in FIGS. 1 to 6 including parts not shown in FIGS. 7 and 8. It has the same or similar structure to the suction tool for the electric vacuum cleaner of the first embodiment shown. Therefore, for configurations not shown, FIGS. 1 to 6 will be substituted, and the same or similar components shown in the drawings will be assigned the same reference numerals as those in the first embodiment to explain the configurations and Although the description of the function and effect based thereon is omitted, these same or similar constituent parts also form a part of the structure of the suction tool for the electric vacuum cleaner according to the second embodiment.

In the second embodiment, the auxiliary dust suction opening 5
2 are located in the vicinity of both front and rear ends of the bridge 53 extending in the front-rear direction, and are opened to the lower surface 11a of the suction tool body 11. The auxiliary dust suction opening 52 on the rear side is the relay chamber 3 as described above.
0, but the front side auxiliary dust suction opening 52 is communicated with the lower ventilation chamber 41 as shown in FIG. Since the suction pressure of the dust suction chamber 25 spreads to the ventilation chamber 41 through the outlet 42, dust can also be sucked through the auxiliary dust suction opening 52 on the front side. The structure other than the above points is the same as that of the vacuum cleaner suction tool according to the first embodiment.

In the suction tool for the electric vacuum cleaner according to the second embodiment having such a structure, one or more guards 53 facing the hitting bodies 14 to 16 are provided in the dust suction opening 25a, and the auxiliary dust suction opening 52 is provided. As a result, the same action as that of the suction tool for the electric vacuum cleaner according to the first embodiment can be obtained, and each of the problems of the present invention can be solved.

Moreover, since the auxiliary dust suction openings 52 are provided near the front and rear ends of the guard 53 formed of a bridge, respectively, when the suction tool 6 is moved forward along the surface to be cleaned or backward. Also, the dust that has been left unsucked by the guard 53 can be sucked, and thus the amount of unsucked dust can be further reduced.

In the present invention, the auxiliary dust suction opening 52
Can be provided only near the front side of the guard 53 composed of a bridge, and the rear side can be omitted.

FIG. 9 shows a third embodiment of the present invention. The third embodiment differs from the first embodiment only in the structure of the guard, and the other structures are similar to those of the first embodiment.
It has the same or similar structure to the suction tool for the electric vacuum cleaner of the first embodiment shown in FIGS. 1 to 6 including a portion not shown in FIG. Therefore, for configurations not shown, FIGS. 1 to 6 will be substituted, and the same or similar components shown in the drawings will be assigned the same reference numerals as those in the first embodiment to explain the configurations and Although the description of the action and effect based thereon is omitted, these same or similar constituent parts also constitute a part of the structure of the suction tool for the electric vacuum cleaner according to the third embodiment.

The guard 53 in the third embodiment is
Front and rear sides of the dust collecting opening 25 are provided so as to face each other from opposite opening edges, and a dust collecting gap 53a is provided between the tips thereof. Instead of this configuration, a guard extending rearward from the front opening edge toward the rear opening edge may be provided, and a dust suction gap may be provided between the tip and the rear opening edge, or On the contrary, a guard may be provided that extends forward from the rear opening edge toward the front opening edge, and a dust suction gap may be provided between the tip and the front opening edge. The tip of the guard 53 in each of these configurations is curved or inclined upward so as not to get caught on the surface to be cleaned. The structure other than the above points is the same as that of the vacuum cleaner suction tool according to the first embodiment.

Also in the suction tool for the electric vacuum cleaner according to the third embodiment having such a structure, one or more guards 53 facing the hitting bodies 14 to 16 are provided in the dust suction opening 25a, and the auxiliary dust suction opening 52 is provided. As a result, the same action as that of the suction tool for the electric vacuum cleaner according to the first embodiment can be obtained, and each of the problems of the present invention can be solved.

Moreover, since there is a dust suction gap 53a facing the tip of the guard 53 extending in the front-rear direction, dust can be sucked from this portion. Therefore, when the suction tool 6 is moved forward along the surface to be cleaned or when it is moved backward, the dust left unsucked by the guard 53 can be sucked into the dust suction chamber 25 through the suction gap 53a. You can leave less.

Therefore, in the vacuum cleaner suction tool according to the third embodiment, the auxiliary dust suction opening 52 can be omitted.

FIG. 10 shows a fourth embodiment of the present invention. The fourth embodiment is different from the first embodiment only in the structure of the guard, and the other structures are the same as those in the first embodiment shown in FIGS. 1 to 6 including parts not shown in FIG. It has the same or similar structure as the suction tool for the electric vacuum cleaner according to the first embodiment. Therefore, for configurations not shown, FIGS. 1 to 6 will be substituted, and the same or similar components shown in the drawings will be assigned the same reference numerals as those in the first embodiment to explain the configurations and The description of the action and effect based thereon is omitted, but these same or similar constituent parts also constitute a part of the structure of the suction tool for the electric vacuum cleaner according to the fourth embodiment.

The guard 53 in the fourth embodiment is
The dust suction opening 25 is installed in the lateral direction across the left and right opening edges facing each other in the longitudinal direction. The guard 53 is located directly below the striking body 16 that does not substantially contribute to the ejection of dust. The structure other than the above points is the same as that of the vacuum cleaner suction tool according to the first embodiment.

Also in the vacuum cleaner suction tool according to the fourth embodiment having such a configuration, one or more guards 53 facing the hitting bodies 14 to 16 are provided in the dust suction opening 25a, and the auxiliary dust suction opening 52 is provided. As a result, the same action as that of the suction tool for the electric vacuum cleaner according to the first embodiment can be obtained, and each of the problems of the present invention can be solved.

Moreover, the guard 53 extends in the left-right direction of the suction port main body 11, and the dust suction opening 25 is formed on both front and rear sides thereof.
Since a is opened, the dust left unsucked by the guard 53 is sucked into the dust chamber 25 through the dust suction opening 52 both when the suction tool 6 is moved forward along the surface to be cleaned and when it is moved backward. Since it is possible, it is possible to eliminate the residue of dust.

Therefore, in the vacuum cleaner suction tool according to the fourth embodiment, the auxiliary dust suction opening 52 can be omitted.

The present invention is not limited to the above embodiments. For example, the present invention can be applied to a suction tool that does not include the wheels 13. In addition, the present invention arbitrarily and selectively combines the constituent elements of each of the above-described embodiments, thereby constructing a suction tool for an electric vacuum cleaner having a function equivalent to or different from that of each of the above-described embodiments, and adding the new suction tool. It may be an embodiment.

[0077]

The present invention described in detail above has the following effects.

According to the first aspect of the present invention, since the dust suction opening is provided with the guard for obstructing the suction of the soft cleaning surface such as the surface cloth of the futon into the dust collecting chamber, the soft cleaning surface is Since it does not stick to the slapping bodies in the dust collection chamber and prevent them from vibrating, the vibrating motion of the striking bodies can be used not only for cleaning the floor surface such as tatami mats but also for soft surfaces such as duvets. In addition to being assured, the resistance to the surface to be cleaned is low and the running performance can be improved.

According to the second aspect of the present invention, since the guard is a bridge that is installed over the opening edges of the dust suction opening that face each other, the structure is simple.

According to the third aspect of the present invention, the slidable action of the guard extending in the front-rear direction can further improve the traveling property with respect to the surface to be cleaned, and when the hitting body is pulled so as to be taken out from the dust suction opening. In addition, the guard not only limits the pulling position to make it difficult to pull, but also can limit the bending of the pulled hitting body to a small extent, so that the hitting body can be prevented from being accidentally taken out.

According to the fourth aspect of the present invention, the slidable action of the guard extending in the front-rear direction can further improve the traveling property with respect to the surface to be cleaned, and when the hitting body is pulled so as to be taken out from the dust suction opening. In addition, the guard not only limits the pulling position to make it difficult to pull, but also can limit the bending of the pulled hitting body to a small extent, so that the hitting body can be prevented from being accidentally taken out.
Further, although dust cannot be absorbed at the guard portion consisting of the bridge, the auxiliary dust suction opening provided on the extension line can suck dust left behind in correspondence with the guard, so that the dust non-absorbable area is substantially formed. It can be prevented from happening.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall configuration of an electric 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 a suction tool according to the first embodiment.

FIG. 3 is a bottom view showing the configuration of the suction device according to the first embodiment.

FIG. 4 is a sectional view taken along the line ZZ in FIG. 3;

5 is a cross-sectional view taken along the line YY in FIG.

FIG. 6 is an exploded perspective view of the suction tool body of the suction tool according to the first embodiment.

FIG. 7 is a bottom view showing the structure of the suction device according to the second embodiment of the present invention.

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

FIG. 9 is a bottom view showing the configuration of the suction tool according to the third embodiment of the present invention.

FIG. 10 is a bottom view showing the structure of the suction device according to the fourth embodiment of the present invention.

[Explanation of reference numerals] 1 ... vacuum cleaner body, 6 ... suction tool, 11 ... suction tool body, 11a ... bottom surface of suction tool body, 14 ... hammer, 15 ... hammer, 16 ... hammer, 25 ... dust collecting chamber , 25a ... Dust suction opening, 52 ... Auxiliary dust suction opening, 53 ... Guard.

Claims (4)

[Claims] 1. A plurality of striking bodies, each of which comprises a suction tool body having a dust suction chamber having a dust suction opening opened on a lower surface of the suction body, and which is vibrated by a suction pressure exerted on the dust suction chamber to strike a surface to be cleaned. A suction tool for an electric vacuum cleaner arranged in the dust collection chamber so as to substantially close the dust collection opening, wherein the dust collection opening opposes the hitting body and obstructs the suction of the surface to be cleaned into the dust collection chamber. A suction tool for an electric vacuum cleaner, which is equipped with a guard. 2. The suction tool for an electric vacuum cleaner according to claim 1, wherein the guard is a bridge that is provided over the opening edges of the dust suction opening that face each other. 3. The suction tool for an electric vacuum cleaner according to claim 1, wherein the guard is provided so as to extend in the front-rear direction of the suction tool main body. 4. The guard is a bridge that is laid across the front and rear opening edges of the dust suction opening that face each other and extends in the front and rear direction. At least one of the front and rear ends of the guard is provided on the lower surface of the suction tool body. The suction tool for a vacuum cleaner according to claim 1 or 3, further comprising an auxiliary dust suction opening that is opened and on which the suction pressure is exerted.