JPH0947384A - Suction tool for electric vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the hitting function of a hitting body from being obstructed by inserting one end part of the vibration shaft of the hitting body into a shaft hole, supporting one side outer periphery of the other end part to the shaft supporting part of a fixed bearing, supporting another side outer periphery by the shaft supporting part of an attachment bearing and arranging the hitting body in a dust suction room. SOLUTION: The bearing 60 having the shaft hole is fitted on one end side of both side end parts of the dust suction room 25 having a dust suction opening 25a where a guard 53 is formed at the opening of this suction tool 6 and a split bearing composed of the fixed bearing and the attachment bearing 66 is fitted on the other end side. Then, one end side of the vibration shafts 73a-35a of the hitting bodies 73-75 is inserted from the inner side of the guard 53 into the dust suction room 25 and inserted into the bearing holes 60b and 60c of the bearing 60 and the other end side of the vibration shafts 73a-75a is arranged to the fixed bearing. Thereafter, by attaching the attachment bearing 66, the hitting bodies 73-75 are arranged inside the dust suction room 25. Thus, the hitting function of the hitting bodies 73-75 is not obstructed and a traveling performance is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention hits a surface to be cleaned such as a carpet, a tatami mat, or a blanket or a futon to give vibration to the surface.
The present invention relates to a suction device for an electric vacuum cleaner used for sucking dust on the surface to be cleaned.

[0002]

2. Description of the Related Art Cleaning an electric vacuum cleaner while striking the surface to be cleaned is advantageous in that it has a high dust absorption effect because it can knock out dust that has sunk on the surface to be cleaned. And
As a structure for hitting the surface to be cleaned, there is one that utilizes the driving force of an electromagnetic solenoid. However, as described in JP-B-37-19224 and JP-B-47-25192, a hitting body is hit by a suction pressure. What vibrates
This is advantageous in that no special drive device is required.

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 applied through the connecting pipe, and are arranged side by side so as to substantially close the dust suction opening.

In 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 each hitting body is moved up and down by the balance between the difference in spring force and the suction pressure. The object to be cleaned such as a carpet floated from the floor surface that is vibrated in the direction and sucked in the dust suction opening is struck, whereby the dust is struck out to absorb the dust.

Further, in the technique disclosed in Japanese Utility Model Publication No. 47-25192, each hitting body has a plurality of beads attached to a vibrating spring, and due to the balance between the spring force and the change of suction pressure in the suction tool body, Each slapping body is vibrated in the vertical direction to strike a surface to be cleaned, such as a carpet or tatami mat, which is sucked in the dust suction opening, whereby the dust is knocked out to suck the dust.

[0006] The dust suction openings of these conventional suction tools consist of a single rectangular opening formed over the entire area of the lower surface of the suction tool body except for the circumference, and conventionally, through the dust suction openings. It is designed to inhale only.

[0007] Such a conventional suction tool was developed mainly for cleaning carpets and tatami mats, and it is not considered to suck dust on a soft surface to be cleaned such as a futon or a sheet. However, in recent years, futons and the like have been considered as objects to be cleaned, and it is desirable to clean while blowing out the dust contained therein.

However, when a soft surface to be cleaned such as a futon is cleaned with the conventional suction tool, the surface, lining or sheets of the futon, which is the surface to be cleaned, is sucked over the entire single dust suction opening. When the tapped surface is attached to the opening, the surface to be cleaned adheres to the hitting body disposed in the opening, and even if the hitting body vibrates, it does not act to hit the surface to be cleaned and the hitting function is lost. There is a problem that the dust absorption property is significantly impaired, and in some cases, the surface, lining, or sheets of the futon, which is the surface to be cleaned, is sucked into the inside of the suction tool body from between the hitting bodies and the hitting body. However, there is a problem in that the striking body may not operate properly and that the striking body may malfunction.

Further, if the surface to be cleaned sticks to the dust suction opening as described above, there is a problem that the main body of the suction tool cannot be smoothly moved or run along the surface to be cleaned.

As a method for solving this problem, even if the surface to be cleaned is adsorbed at the central portion in the longitudinal direction of the dust suction opening, it is orthogonal to the longitudinal direction of the dust suction opening so as not to impede the vibration of the hitting body. If the regulation body is formed on the lower surface of the suction tool, the regulation body does not hinder the striking function of the striking body, and the suction body is passed through between the striking bodies on the surface to be cleaned. It is possible to prevent it from being sucked into the inside and to prevent the running property from being hindered.

[0011]

However, in the case where the regulating body which is orthogonal to the longitudinal direction of the dust suction opening is formed on the lower surface of the suction tool body in the central portion of the dust suction opening as described above, each of the hitting bodies is Although it is formed in a long rod shape and is assembled by inserting it into the dust suction opening from the lower surface side of the suction tool body, the problem that the hitting bodies cannot be incorporated into the dust suction opening due to the restriction body. Occurs.
Of course, it is also possible to construct each of the hitting bodies by a case that is divided into two parts in the vertical direction which forms the main body of the suction tool, and install the hitting bodies in either case in a state where these two cases are separated. When the hitting body is incorporated by this, there is a problem that it has a relation with other parts and the assembling property thereof deteriorates.

In view of this situation, the first object of the present invention is to prevent the hitting function of the hitting body from being hindered as in the above-mentioned conventional one, and to suck the material through the spaces between the hitting bodies on the surface to be cleaned. In order not to be sucked into the tool main body, and further, in order to improve the traveling property, even if the surface to be cleaned is sucked at the position of the central portion in the longitudinal direction of the dust suction opening, it does not hinder the vibration of the hitting body. To provide a suction tool for an electric vacuum cleaner in which a regulating body that is substantially orthogonal to the longitudinal direction of the dust suction opening is formed on the lower surface of the suction tool, and the hitting body can be easily arranged in the dust suction opening. is there.

A second object of the present invention is, in addition to the above-mentioned first object, to provide a suction device for an electric vacuum cleaner which is more easily incorporated into the suction device main body to be disposed in the dust suction opening of the hitting body. It is to be.

A third object of the present invention is, in addition to the first object, to provide a suction device for an electric vacuum cleaner, which makes the suction device main body inexpensive and improves the durability of the bearing for supporting the hitting body. That is.

[0015]

According to the first aspect of the present invention,
In order to achieve the above-mentioned first object, a dust collecting chamber having a substantially rectangular dust collecting opening attached to the wall surface facing the surface to be cleaned with the connecting pipe attached thereto and communicating with the connecting pipe, and the longitudinal direction of the dust collecting chamber. A suction tool body provided with bearings provided on both sides,
The vibrating shaft and the tapping element attached to the vibrating shaft are provided, and a plurality of tapping bodies are provided in the dust suction chamber so as to substantially close the dust suction opening of the suction tool body. In a suction tool for an electric vacuum cleaner, which vibrates the tapping body by suction pressure to tap the surface to be cleaned located in the suction opening to absorb dust, one of the bearings is inserted into one end of the vibrating shaft. Fixed bearing provided with a shaft support portion for supporting one outer circumference of the other end of the vibrating shaft and a shaft support supporting the other outer circumference of the vibrating shaft. A fixed bearing and a mounting bearing that supports the other end of the vibration shaft with the fixed bearing, and extends from the wall surface to the opening region of the dust suction opening in a direction substantially orthogonal to the longitudinal direction. A regulation body, The body is inserted from one end side of the vibrating shaft along the longitudinal direction of the dust collecting chamber, this one end is inserted into the shaft hole, and the one end outer periphery of the other end is supported by the shaft support part of the fixed bearing and the other end outer periphery. Is a suction tool for an electric vacuum cleaner in which the striking body is disposed in the dust suction chamber by supporting the shaft supporting portion of the mounting bearing. In order to achieve the object, the independent bearing in the invention according to claim 1 is a fixed bearing provided with a shaft support portion that supports one outer circumference of the vibration shaft, and a shaft support portion that supports the other outer circumference of the vibration shaft. And a fixed bearing and a mounting bearing that axially supports the other end of the vibrating shaft, the suction device for a vacuum cleaner being a split bearing, and the invention according to claim 3 is In order to achieve the third object, the invention according to claim 1 or claim 2 The suction tool body independent bearings and split bearing that is obtained by a vacuum cleaner for suction tool constructed of a member having a different wear resistance.
According to the invention of claim 1 configured as described above, the tapping function of the tapping body disposed in the dust suction chamber is not hindered, and the surface to be cleaned is sucked into the main body of the suction tool through between the tapping bodies. And the running performance can be improved.
It has an effect that the striking body can be easily arranged in the dust suction chamber of the suction tool body.

Further, in the invention described in claim 2, in addition to the operation of the invention described in claim 1, since both bearings for supporting both ends of the vibrating shaft of the striking body are split bearings, striking into the dust collecting chamber is performed. This has the effect that the body can be arranged more easily.

Further, in the invention described in claim 3, in addition to the functions of the invention described in claim 1 and the invention described in claim 2, only the bearing is a durable member, and therefore the durability of the bearing is improved. It has the effect of improving the property and making the entire suction tool main body inexpensive.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An 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 having a suction tool according to the present embodiment has a movable vacuum cleaner main body 1 and a suction port of the main body 1 which is detachably inserted and connected. A suction hose 2, an operation handle 3 fixed to the tip of the dust hose 2, extension tubes 4 and 5 detachably connected to the tip of the operation handle 3, and extended. The tip of the pipe 5 or the operation handle 3
And a suction tool 6 which is detachably inserted and connected to the tip end of the suction tool 6. The electric vacuum cleaner body 1 has a built-in electric blower (not shown), and the dust suction operation is performed by its operation. Further, the operation handle 3 has a remote control switch for remote operation, 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. As shown in FIGS. 2 and 3, the suction tool 6 is
A suction tool body 11, a connection pipe 12, a pair of wheels 13,
A plurality of hitting bodies 73 to 75 are provided.

As shown in FIG. 5 etc., the suction tool body 11
Is assembled by assembling an upper case 21 and a lower case 22 made of a synthetic resin such as ABS resin or polypropylene with their opening faces abutting each other. Both cases 21, 2
2 is inserted from the lower surface side of the lower case 22 to the upper case 2
As shown in FIG. 11 projectingly provided on the inner surface of the No. 1, they are connected by two screws 23 on the front side and two screws 24 on the rear side (see FIG. 4) screwed to the screw receiving boss 21d. The lower surface of the suction tool main body 11, that is, the lower surface 22c of the lower case 22 is flat, but the overall shape of the suction tool main body 11 is a generally oblong cylinder shape, and the central part in the longitudinal direction thereof swells to thereby form an outer peripheral surface. Even if you have a futon on it, it will slip off easily.

As shown in FIGS. 3 and 5, the lower case 2
2 is formed 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 extends in the longitudinal direction on the flat lower surface 22c of the lower case 22 to form a substantially rectangular shape. Has been done. As shown in FIGS. 9 and 11, a central partition wall 27 is provided at a substantially central portion of the lower case 22. The central partition 27 is provided from the partition 26 to the central portion of the rear wall of the lower case 22, and
The side 6 is wide, and the side closer to the rear wall is narrower. 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 removed.
Is in communication with.

Reference numeral 28 in FIGS. 9 and 11 indicates a front wall 22b of the lower case 22 which extends forward from both side wall portions of the central partition wall 27.
It is a pair of partition walls integrally connected to the central part of the. These partition walls 28 support the central portion of the partition wall 26 in the longitudinal direction from the front side. Further, the side wall portion 27a of the central partition wall 27 also functions similarly to the pair of partition walls 28, and supports the central portion in the longitudinal direction of the partition wall 26 from the rear side. Since the central portion of the partition wall 26 in the longitudinal direction is reinforced by these supports, it is possible to absorb the impact when the hitting bodies 73 and 74 hit the central portion, and the partition wall 26 is accompanied by the vibration of the hitting bodies 73 and 74.
It is excellent in that it can suppress the vibration and resonance of the, and it can realize quietness.

As shown in FIGS. 10 to 12, a central partition wall 29 corresponding to the central partition wall 27 is integrally formed on the inner surface of the central portion of the upper case 21 in the longitudinal direction. The front ends of the two central partition walls 27 and 29 are fitted into and recessed from each other and are continuous with each other, whereby a relay chamber 30 is formed between the upper and lower cases 21 and 22. This relay room 30
Vertical rectifying ribs 31 (see FIG. 5) are integrally provided on the central partition wall 29 between the side walls thereof. As shown in FIG. 5, at the central portion in the longitudinal direction of the rear wall of the upper case 21, a protruding cylindrical portion 3 having a substantially cylindrical shape communicating with the rear end of the relay chamber 30.
2 is integrally provided so as to project rearward, and the connecting pipe 12 is fitted and attached to the protruding 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 and connected to the tip end of the extension pipe 5 or the tip end of the operation handle 3 described above.
When is operated, the suction pressure generated by the electric blower is exerted on the dust collection chamber 25.

As shown in FIGS. 5 and 11, the upper case 2
A pair of partition walls 34 extending forward from both side wall portions of the central partition wall 29 are provided on the inner surface of the front part of the No. 1 in correspondence with the partition wall 28. The tips of the partition walls 28 and 34 are not in contact with each other, and a ventilation gap 35 is formed between them.

As shown in FIG. 12, both upper and lower cases 2
Bearing grooves 36 are formed correspondingly on the opposite surfaces of the longitudinal end walls 21a, 22a of the Nos. 1 and 22, respectively, and an inverted U-shaped shaft is formed on the outer surfaces of the end walls 21b of the upper case 21. The support 37 is integrally formed. 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. Wheel 13 has its flange 1
3b is fitted in the bearing groove 36 so that the both end walls 21a, 22
It is rotatably attached to both ends of the suction tool body 11 in the longitudinal direction by being sandwiched between the facing surfaces of a from above and below. In this mounted state, the shaft support 37 is mounted on the wheel shaft 1.
3a is fitted from above.

The wheel 13 has a large diameter which is substantially the same size as the end shape of the suction tool body 11, and the suction tool body 1
The end face 1 of the longitudinal direction of 1 is covered and hidden, and a gap 38 is formed between the end face and the peripheral portion of the end face.

As shown in FIG. 5, the suction tool body 11 is provided with an upper ventilation chamber 39. The upper ventilation chamber 39 is
A pair of partition walls 34 of the upper case 21 (only one is shown in FIG. 5), a front wall portion 21c positioned between the both partition walls 34 of the upper case 21, and the front wall portion 21c. It is formed so as to be partitioned by the vertical front wall portion 29a of the central partition wall 29 which faces the central partition wall 29.

The suction tool body 11 is provided with an inlet 40 for an intake air passage, which will be described later, located above the lower surface thereof, that is, the lower surface 22c of the lower case 22. This inlet 40 is excellent in that it can be closed less toward the upper end side of the suction tool body 11, and in the case of the present embodiment, it is provided so as to face the upper ventilation chamber 39. Moreover, in the present embodiment, the inlet 40 is formed by a plurality of slits arranged side by side as shown in FIG.

Below the upper ventilation chamber 39 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 22b located between the partition walls 28 of the front wall of the lower case 22, and the front wall portion 22b. It is defined by the vertical front wall portion 26 a of the partition wall 26 that faces the partition wall 26. An outlet 42 of the intake air passage, which will be described later, is formed at the lower end of the front wall portion 26a. 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. The first intake air passage communicates with the outside of the relay chamber 30 via the ventilation gap 35. The upper ventilation chamber 3
As shown in FIG. 5, an air filter 43 made of urethane foam or the like is housed inside 9.

Both longitudinal end walls 21 of the suction tool body 11
Although not shown in the drawings, a and 21a are each provided with an inlet for taking in outside air, and this inlet is located inside the wheel 13 and is covered by the wheel 13 so as to be covered with the suction tool main body 11
It is provided so as not to be exposed on the visible outer surface of. Except for the relay chamber 30 in the suction tool body 11, that is, the inner space on the outer peripheral side of the relay room 30 communicates with the outside of the suction tool body 11 through this inlet.

The inlet (not shown), the internal space of the suction tool body 11, the ventilation gap 35, the lower ventilation chamber 41,
The outlet 42 forms a second intake air passage. The inlet of the air passage communicates with the gap 38 via the inside of the wheel 13.

As shown in FIGS. 3 and 4, the lower case 22
A pair of grooves 45 forming a third intake path are formed at the lower end of the front wall portion 22b. This groove 45 is the suction tool body 1
The outside of 1 and the dust collection chamber 25 are connected. In addition,
A recess 46 is formed in the lower case 22 so as to be connected to the grooves 45 and through which the front screw 23 passes.

Further, as shown in FIG. 3 and FIG.
A pair of grooves 47 that are close to each other and form a fourth intake path are formed in the rear portion of the connecting pipe 12 side of the spacer 22. These grooves 47 connect the outside of the suction tool body 11 and the dust suction chamber 25.

The pair of grooves 47 are formed in the central portion of the lower case 22 in the longitudinal direction. Therefore, the suction pressure exerted through the relay chamber 30 has the strongest effect on the central portion of the dust collecting portion 25 in the longitudinal direction. It communicates with the dust collection chamber 25. The arrangement of the groove 47 is excellent in that it is possible to secure the intake air that is sucked into the dust suction chamber 25 through the groove 47 with a higher suction pressure.

A rib-shaped sled wall 48 extending in the front-rear direction is integrally provided between the pair of grooves 47. Both 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.

In FIGS. 3, 4 and 5, 51 and 52 are vent holes which are directly communicated with the relay chamber 30 from the rear part of the central portion in the longitudinal direction of the lower case 22 without passing through the dust suction chamber 25. Is. Two of the ventilation holes 51 are formed on both sides of the sled wall 48, and the other two ventilation holes 52 are provided on both sides of the pair of grooves 47. The rectifying rib 31 is located directly above the vent holes 51 and 52, and the rectifying rib 31 allows the intake air flow from the dust collection chamber 25 to the connecting pipe 12 to be vented. , 52 to prevent a large vortex from being swirled in the upper portion of the relay chamber 30 after being mixed with the intake air flow toward the connecting pipe 12.

As shown in FIGS. 3, 4, 10, and 12, the lower surface of the suction tool body 11 is provided with, for example, two guards 53 that are flush with the lower surface. . These guards 53 are formed by bridges that cross the dust suction opening 25a in the front-rear direction, that is, extend in the region of the dust suction opening 25a, and are spaced apart from each other in the longitudinal central portion of the dust suction opening 25a. They are located parallel to each other. The guard 53 divides the dust suction opening 25a into three openings. The vent holes 52 are arranged on the rear sides of the pair of guards 53, respectively.

Even if the surface to be cleaned is a soft surface to be cleaned such as the front or lining of a futon or a sheet, these soft surfaces to be cleaned are sucked into the dust collecting chamber 25 by the guard 53 during cleaning. To prevent the dust suction opening 25a from being completely closed and prevent the soft surface of the portion to be cleaned from entering the dust suction chamber 25 through the striking bodies 73 to 75. . Further, since the guard 53 is flush with the lower surface of the suction tool body 11, the guard 53 functions to improve the traveling property of the suction tool body 11 in order to facilitate traveling on the surface to be cleaned.

As shown in FIGS. 4 and 5, a protruding portion 54 is provided on the lower surface of the suction tool body 11, that is, the lower surface 22c of the lower case 22. The protruding portion 54 is formed by a portion horizontally protruding rearward from the lower end of the front wall portion 22b of the lower case 22, and is integrally connected to the front end portions of the pair of guards 53. In this way, the protruding portion 54 formed so as to protrude toward the dust suction opening 25a side
Is flush with the lower surface 22c of the lower case 22 and covers the outlet 42 when viewed from the lower surface 22c side. As a result, as shown in FIG. 4, the width of the central suction opening among the three dust suction openings divided by the guard 53 is narrower than the widths of the other dust suction openings.

The lower case 22 is shown in FIGS. 6, 7, and 1.
0 and FIG. 12, bearing mounting recesses 22m and 22n are formed at both longitudinal ends of the dust collection chamber 25. Then, as shown in FIGS. 10 to 12, the bearing mounting recess 22m is formed into a bottomed rectangular tube shape that opens to the upper side of the lower case 22.
As shown in FIG. 6, FIG. 10 and FIG. 12, n is open to the lower surface 22c side of the lower case 22 and is formed in a bottomed rectangular tube shape, and an engagement hole 22f is formed in the bottom wall 22e.
In addition, one side wall formed in a bottomed rectangular tube shape is removed leaving a U-shaped positioning rib 22g.

As shown in FIGS. 7, 9 and 12, the bearing mounting recesses 22m and the bearing mounting recesses 22n formed at both ends in the longitudinal direction of the dust collection chamber 25 have bearings 60 respectively.
The bearing 61 is housed and arranged.

The bearing 60 is formed in a square shape having a recess 60a on one side as shown in FIGS.
8a, one upper bearing hole 60b as a bearing is located in the upper center of FIG. 8 and is located below the upper bearing hole 60b. Lower bearing holes 60
c and 60c are formed. The bearing 60 is an independent bearing composed of one member. The lower case 22 of the bearing 60 is housed in the bearing mounting recess 22m as shown in FIG.
It is inserted from an opening of 2 m and accommodated and arranged in the state shown by the broken line. Although not shown, two ribs are formed on the bearing mounting recess 22m, that is, on one side wall of the bottomed rectangular tube, and the bearing 60 is housed in the bearing mounting recess 22m in a press-fit state by these ribs.

Next, as shown in FIG. 6, the bearing 61 is composed of a fixed bearing 62 for supporting one outer circumference of the vibrating shaft and a mounting bearing 66 for supporting the other outer circumference of the vibrating shaft, which will be described later. The fixed bearing 62 has a vertical wall 62a and an abutting portion 62b projecting laterally from the lower end portion of the vertical wall 62a in FIG. 6, leaving a gap 62c at the center for inserting an engaging claw 66c described later. It is formed on the left and right. Also,
In the vertical wall 62a, one deep notch groove 63a and two notch grooves 64a, 64a shallower than the notch groove 63a are formed on both sides of the notch groove 63a.
The bottoms of a, 64a, and 64a are vibrating shafts 73 to 75 described later.
Bearing portion 63b as a shaft supporting portion for supporting the outer periphery on one side,
64b and 64b are formed.

Further, the mounting bearing 66 is the fixed bearing 6
It is formed by a vertical wall 66a that contacts the two vertical walls 62a and an eaves wall 60f protruding from the vertical wall 66a. The eaves wall 66f and the vertical wall 66a are integrally formed in the cutout grooves 63a, 64a, 64a. Rib-shaped protrusions 63d, 64d, 64d to be respectively inserted are formed, and the tip end portions of these rib-shaped protrusions 63d, 64d, 64d serve as shaft support portions that support the outer periphery of the other side of the vibration shafts 73a to 75a. Supporting portions 63e, 64e, 64e are formed,
The rib protrusions 6 are respectively provided in the notch grooves 63a, 64a, 64a.
When 3d, 64d and 64d are inserted, as shown in FIG. 13, the supporting portions 63e, 64e and 64e of the rib-like projections 63d, 64d and 64d and the bearing portions 63b, 64b and 64b of the fixed shaft 62 are Between the vibration shaft 73 ~
The bearing portions 63, 64, 64 for supporting 75 are formed. That is, the notch grooves 63a, 64 of the fixed bearing 62
a and 64a, rib-shaped projections 63d and 64 of the movable bearing 66
d and 64d are inserted and the fixed bearing 62 and the movable bearing 66 are inserted.
The bearings 63, 64, 64 are formed by integrating and. In addition, the abutting portions 62b of the fixed bearing 62 are provided at both ends of the vertical wall 66a of the mounting bearing 66.
A pair of engaging pieces 66d, each of which has an abutting protrusion 66b that abuts on the center, and an engaging claw 66c formed at the tip end in the central portion.
Are formed via a gap 66e.

The bearing 61 is composed of a fixed bearing 62 and a mounting bearing 66 which are divided from each other, and both of them constitute a divided bearing.

The bearing portions 63, 64, 64 are respectively formed with bearing holes 60b, 60c, 6 formed in the bearing 60.
It corresponds to 0c.

Then, the lower case 22 of the bearing 61.
To store the fixed bearing 62 in the bearing mounting recess 22n, the fixed bearing 62 is positioned such that its abutting portion 22d and the bottom of the vertical wall 62a are positioned in the bottom wall 22e of the bearing mounting recess 22n. In this state, the gap 62c through which the engaging claw 66c is inserted corresponds to the engaging hole 22f formed in the bottom wall 22e, and the U-shaped positioning rib 22g and the peripheral wall restrict the movement in the front-rear and left-right directions. Next, the mounting bearing 66 is attached to the rib-shaped projections 63d, 64 of the mounting bearing 66.
d and 64d are cutout grooves 63a and 64 of the fixed bearing 62.
The engaging pieces 66d and 66d are inserted into the gaps 62c and the engaging holes 22f while being positioned, and the engaging claws 66c and 66c of the engaging pieces 66d and 66d.
Through the engaging hole 22f to be engaged (see FIG. 11).
As a result, the fixed bearing 62 is housed and mounted in the bearing mounting recess 22n by the mounting bearing 66.

Next, in the dust collecting chamber 25, tapping bodies 73 to 75 are built in along the longitudinal direction thereof so as to vibrate vertically due to suction pressure.

That is, each of the hitting bodies 73 to 75 is shown in FIG.
As shown in FIG. 6 and the like, the vibration shafts 73a to 75a made of a spring wire material such as a piano wire and the vibration shafts 73a to 75a.
beater 73b as a plurality of tapping elements having a inserted thereinto
.About.75b. Beaters 73b to 75b
Consists of a short tube, and is made of rubber or elastomer to reduce operating noise. Vibration shafts 73a, 74a
The elastic force is stronger than that of the vibration shaft 75a.

The striking body 73 has one end of the vibration shaft 73a inserted into a lower bearing hole 60c of the bearing 60 near the front wall portion 26a of the dust collection chamber 25, and the other end of the striking member 73 having the bearing portion 64 of the bearing 61. The hitting body 74 is attached to the bearing 60 at the one end side of the vibrating shaft 74a.
Lower bearing hole 60c near the rear wall portion 26b of the dust collection chamber 25
And is attached by inserting the other end into the bearing portion 64 of the bearing 61. The remaining hitting body 75 is attached by inserting one end side of the vibration shaft 75a into the upper bearing hole 60b of the bearing 60 and the other end side into the bearing portion 63 of the bearing 61.

The attachment or disposition of the hitting bodies 73 to 75 to the dust collecting chamber 25 of the suction tool body 11 is performed in the following procedure.

First, the assembled suction tool body 11 is positioned in a predetermined state with the dust suction opening 25a of the dust suction chamber 25 facing upward. In this state, the bearing 60 is housed in the bearing mounting recess 22m of the lower case 22. Then
As shown in FIGS. 6 and 10, the fixed bearing 62 is placed in the bearing mounting recess 22n, and the abutting portion 62b is brought into contact with the bottom wall 22e to dispose the bearing as shown in FIG. Next, the one end side of the vibrating shaft 75a of the hitting body 75 is connected to the guard 5 from the dust suction opening 25a of the dust suction chamber 25 as shown by a two-dot chain line in FIG.
3 is inserted into the dust collection chamber 25 along the longitudinal direction (arrow direction), and then one end side of the vibrating shaft 75a is inserted into the upper bearing hole 60b of the bearing 60. Next, the other end of the vibrating shaft 75a is attached to the cutout groove 63 of the fixed bearing 62.
It is inserted from a and placed on the bearing portion 63b.

Similarly, the hitting bodies 73, 74 are passed through the inside of the guard 53 from one end side of the vibrating shafts 73a, 74a through the dust collecting opening 25a of the dust collecting chamber 25 into the dust collecting chamber 25 along the longitudinal direction thereof. Then, one end side of the vibrating shafts 73a and 74a is inserted into the lower bearing holes 60c and 60c of the bearing 60. Next, the vibration shafts 73a and 74
The other end side of a is notched grooves 64a, 64a of the fixed bearing 62.
And the bearing portions 64b and 64b are respectively arranged.

Next, the mounting bearing 66 is provided with the rib-shaped projections 63d, 64d, 64d of the mounting bearing 66 in the notch grooves 63a, 64a, 64a of the fixed bearing 62, and the engaging pieces 66d, 66d are provided with the engaging pieces 66d, 66d. Gap 62c and engagement hole 2
Inserted while being positioned at 2f, the engaging pieces 66d, 66
The engaging claws 66c, 66c of d are penetrated through the engaging hole 22f and engaged. As a result, the fixed bearing 62 is housed in the bearing mounting recess 22n by the mounting bearing 66, and in this state, the other end of the vibrating shafts 73a to 75a has a bearing portion 63 formed by the fixed bearing 62 and the mounting bearing 66. 6
Each of the bearings 63, 64 and 64 is supported by the bearings 63, 64 and 64, respectively.

In this way, the hitting bodies 73 to 75 are arranged in the dust collecting chamber 25, and a pair of guards 53 are formed at the dust collecting opening 25a of the dust collecting chamber 25 at the time of arrangement. However, since the bearing 61 that supports the other ends of the vibrating shafts 73a to 75a of the hitting bodies 73 to 75 is a split bearing composed of a fixed bearing 62 and a mounting bearing 66, it can be easily arranged. Is what you can do.

Among the hitting bodies 73 to 75 attached as described above, the hitting bodies 73 and 74 are at the same height position, and the wall portions 26 on both front and rear sides of the dust collecting chamber 25 are arranged.
a and 26b are individually approached, and the hitting body 7
5 is arranged above the hitting bodies 73 and 74, and is close to the outer circumferences of the upper parts of these hitting bodies 73 and 74. Thereby, the hitting bodies 73 to 75 are arranged side by side so as to substantially close the dust suction opening 25a when viewed from below. When the suction pressure is not working, each hitting body 73-
75 maintains a horizontal posture due to its elastic force.
Adjacent hitting bodies 73 to 75 may be in contact with each other, and these hitting bodies 73 to 75 may be provided at the same height position without changing the height position vertically.

As shown in FIG. 5, the hitting bodies 73 to 75 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 hitting body 7
3 to 75 and the dust suction opening 25a, the dust collection chamber 25 has the outlet 42 of each intake air passage, the groove 45, and the groove 47.
Are communicated with each other.

When the electric vacuum cleaner body 1 is operated in the above structure, the suction pressure exerted on the suction tool 6 communicating with the dust collecting hose 2 and the extension pipes 4 and 5 in the dust collecting chamber is as follows. Since the dust spreads over the entire area of the dust collection chamber 25 through the relay chamber 30 in the suction tool 6, the beating members 73 and 74 strike the surface to be cleaned such as the futon and sheets laid on it as follows. You can clean while

That is, since the dust suction opening 25a of the dust suction chamber 25 of the suction device 6 is substantially closed by the plurality of hitting bodies 73 to 75, 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 73 to 75 are attracted substantially simultaneously against the elastic force of the vibration shafts 73 to 75a and warp to be convex upward. By the way, hitting body 7
The elastic force of the vibrating shaft 75a of No. 5 is the striking bodies 73, 7
4 is smaller than the elastic force of the vibration shafts 73a and 74a,
At some point after the start of suction, the warp amount of the hitting body 75 becomes larger than the warp amount of the hitting bodies 73 and 74, and the gap between the adjacent hitting bodies 75 and the hitting bodies 73 and 74 becomes large,
At the same time, each hitting body 73 to 75 in the dust collecting chamber 25
The degree of vacuum in the upper part of is reduced. Therefore, each hitting body 73
˜75 is restored by its elastic force, and the hitting bodies 73 to 75 are warped by the inertial force at that time so as to be convex downward, whereby the cover cloth of the futon sucked in the dust suction opening 25a, etc. Hit the surface to be cleaned. In this case, due to the difference in elastic force, the hitting bodies 73 and 74 are deformed at a higher speed than the hitting body 75 and are warped and deformed downward first to perform the hitting operation (this state is shown in FIG. 12). In addition, the striking motion of the striking body 75 on the surface to be cleaned is performed by the striking bodies 73, 7
Is blocked by 4. After the hitting of the surface to be cleaned as described above, each of the hitting bodies 73 to 75 returns to the original position where it substantially closes the dust suction opening 25a again. It vibrates vertically. Thereby, dust can be absorbed while hitting the surface to be cleaned.

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

In the above dust collecting operation, the surface to be cleaned of the futon, the surface to be cleaned, etc., is sucked into the dust collecting opening 25a of the suction device 6, so that the whole dust collecting opening 25a is sucked in some cases. Even if the situation in which the air is substantially sucked through the dust suction opening 25a due to being substantially sealed by the surface to be cleaned, the first member provided on the suction tool body 11
-Since at least one of the fourth intake air passages can secure the intake air to the dust collection chamber 25 passing through each of the hitting bodies 73 to 75 as follows, the each of the hitting bodies 73 to 75 can be operated reliably. be able to.

When a soft surface to be cleaned such as a futon or a sheet is cleaned in the above dust collecting operation, the surface of the futon, the lining, or the sheet, which is the surface to be cleaned, is the suction tool over the entire dust suction opening. 6 dust suction opening 25a
Even if it is sucked onto the dust collecting opening 25a, since the pair of guards 53 are formed in the dust collecting opening 25a, the surface of the futon, which is the surface to be cleaned, the lining, the sheets, etc., is not covered by the dust collecting opening 25a.
Is not completely blocked, and is not sucked into the suction tool 6 through between the hitting bodies 73 to 75. Therefore, it is possible to perform good cleaning without causing a malfunction in which the hitting bodies 73 to 75 cannot vibrate. In addition, the guard 53 is preferable because it can prevent the front and back of the futon, the sheets, and the like from being sucked into the suction tool 6 through the spaces between the hitting bodies 73 to 75, and can travel on the surface to be cleaned. It is possible to perform various running operations.

Further, although the hitting bodies 73 to 75 are prevented from malfunctioning and the guard 53 for improving the traveling property is formed in the dust suction opening 25a, the hitting bodies 73 to 75 are
The vibrating shafts 73a to 75a are supported by the bearing 60, that is, the independent bearing and the bearing 61, that is, the split bearing. Therefore, as described above, the arrangement or mounting of the hitting bodies 73 to 75 in the dust collecting chamber 25 is not performed. It can be done easily.

Next, in the above embodiment, the bearing 60 that supports one end side of the vibrating shafts 73a to 75a of the hitting bodies 73 to 75 is an independent bearing having bearing holes 60b and 60c. Can also be a split bearing having the same structure as the bearing 61 that supports the other ends of the vibration shafts 73a to 75a. In this way, the vibration shafts 73a to 75a
When the both bearings that support both end sides of the above are split bearings, the bearing accommodating recess for accommodating both bearings has the same structure as the bearing accommodating recess 22n formed in the lower case 22 in the above-described embodiment, and both bearing accommodating recesses are formed. The split bearing may be housed in the recess 22n to support the vibrating shafts 73a to 75a. And FIG. 14 shows a case where this is done. This FIG. 14 shows a double bearing housing recess 2
2n shows the state in which the fixed bearings 62 are respectively housed and arranged. Although not shown in this state, the notch grooves 63a and 64a, 6 of the fixed bearings 62 are provided.
By arranging both end sides of the vibrating shafts 73a to 75a of the hitting bodies 73 to 75 in 4a, and then accommodating the mounting bearing 66 corresponding to both fixed bearings 62 in the bearing accommodating recess 22n, the hitting bodies 73 to 75 are The vibration shafts 73a to 75a are supported by the split bearings, that is, the fixed bearing 62 and the mounting bearing 66, and are disposed in the dust collection chamber 25. The reference numerals in FIG. 14 are the same as those in the above embodiment.

As described above, when both bearings are divided bearings, that is, the bearing 66, compared with the case where one of them is the fixed bearing 60, it is not necessary to insert the vibrating shafts 73a to 75a into the bearing holes 60b and 60c. Further, there is an advantage that the arrangement is easy.

In the above embodiment, the bearing 60 which is a fixed bearing and the fixed bearing 62 of the bearing 66 which is a split bearing are housed in the bearing housing recess 22n.
This may be integrally formed with the lower case 22 by integral molding or the like.

Further, the bearing 60 and the bearing 61, that is, the fixed bearing 62 and the movable bearing 66, are made of, for example, polyacetal resin having abrasion resistance different from that of the constituent resin such as ABS forming the upper case 21 and the lower case 22. Etc. can be used. Thus, the bearing 60 and the bearing 6
When 1 is made of a material having abrasion resistance different from that of the upper case 21 and the lower case 22, there is an advantage that the cost is low.

Further, in the above embodiment, the guard 5
3 is configured as a continuous bridge that crosses the area of the dust suction opening 25a, but this may be formed by dividing the middle portion through a small gap, in short, at least the soft surface to be cleaned is in the dust collecting chamber 25, Alternatively, the shape or position of the hitting bodies 73 to 75 may be any shape as long as it functions so as not to be sucked into the suction tool 6.

[0072]

According to the invention of claim 1 configured as described above, the striking function of the striking body disposed in the dust collecting chamber is not hindered and the soft cleaning surface is provided between the striking bodies. Is not sucked into the suction tool body through
This has the effect of improving the traveling property and further facilitating the disposition of the striking body in the dust suction chamber of the suction tool body.

In addition to the effect of the invention described in claim 1, the invention described in claim 2 is characterized in that both bearings that support both ends of the vibrating shaft of the hitting body are split bearings. This has the effect that the striking body can be arranged more easily.

In addition to the effects of the invention of claim 1 and the invention of claim 2, the invention described in claim 3 improves the durability of the bearing and reduces the cost of the entire suction tool body. It has the effect of

[Brief description of drawings]

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

FIG. 2 is a perspective view of the suction device according to the above embodiment as seen from above.

FIG. 3 is a perspective view of the suction device according to the above embodiment as seen from below.

FIG. 4 is a plan view of the suction device according to the above embodiment as seen from below.

5 is a cross-sectional view of the suction tool according to the above embodiment (A-A cross-sectional view of FIG. 4).

FIG. 6 is an exploded perspective view showing the relationship between the split bearing and the lower case of the suction tool according to the above embodiment.

FIG. 7 is an exploded perspective view showing the relationship between the independent bearing and the lower case of the suction tool according to the above embodiment.

FIG. 8 is a view showing an independent bearing of the suction tool according to the above embodiment, (A) is a perspective view, and (B) is BB of (A).
It is sectional drawing.

FIG. 9 is a plan view of the lower case of the suction tool according to the above embodiment as viewed from above.

FIG. 10 is a view showing an arrangement order of hitting bodies on the suction tool according to the embodiment.

FIG. 11 is an exploded perspective view of the suction device according to the above embodiment.

FIG. 12 is an operation explanatory view of the hitting body of the suction tool according to the embodiment.

FIG. 13 is a perspective view in which a fixed bearing and a mounting bearing constituting the split bearing according to the above embodiment are integrated.

FIG. 14 is an explanatory view seen from below when the both bearings of the suction tool according to the above embodiment are split bearings.

[Explanation of symbols]

1 Vacuum cleaner body 6 Suction tool 12 Connection pipe 25 Dust collection chamber 25a Dust suction opening 11 Suction tool body 73-75 Striking body 73a-75a Vibration shaft 73b-75b Beat (striking element) 60 Independent bearing 60b, 60c Bearing hole (shaft hole) 61 split bearing 62 fixed bearing 66 mounting bearing 63b, 64b notch groove (shaft support part) of fixed bearing 63e, 64e tip of rib-like protrusion (shaft support part) of mounting bearing

Claims (3)

[Claims] 1. A dust collection chamber having a substantially rectangular dust collection opening, which is opened on a wall surface opposite to the surface to be cleaned, to which a connection pipe is attached, and a bearing provided on both sides in the longitudinal direction of the dust collection chamber, the dust collection chamber communicating with the connection pipe. And a plurality of striking bodies which are composed of a vibrating shaft and a striking element attached to the vibrating shaft and which are disposed in the dust collecting chamber so as to substantially close the dust suction opening of the suction body. A suction tool for an electric vacuum cleaner, which vibrates the hitting body by a suction pressure exerted through the connecting pipe and taps a surface to be cleaned located in the suction opening to absorb dust. A fixed bearing provided with a shaft support portion for supporting one outer periphery of the other end portion of the vibrating shaft, and the other bearing. A shaft support part that supports the outer circumference of the other side is installed. It is composed of a split bearing consisting of the fixed bearing and a mounting bearing that supports the other end of the vibrating shaft, and extends from the wall surface into the opening area of the dust suction opening in a direction substantially orthogonal to the longitudinal direction to form a restricting body. Is provided, and the hitting body is inserted from one end side of the vibration shaft along the longitudinal direction of the dust collecting chamber, and one end portion thereof is inserted into the shaft hole, and one outer periphery of the other end portion is used as a shaft support portion of the fixed bearing. A suction tool for an electric vacuum cleaner, characterized in that the other side outer periphery is supported by a shaft support portion of the mounting bearing and the hitting body is disposed in the dust suction chamber. 2. The independent bearing includes a fixed bearing provided with a shaft support portion supporting one outer circumference of the vibrating shaft and a shaft support portion supporting another outer circumference of the vibrating shaft, and the fixed bearing provides the vibration. The suction tool for an electric vacuum cleaner according to claim 1, wherein the split bearing comprises a mounting bearing that supports the other end of the shaft. 3. The suction tool for an electric vacuum cleaner according to claim 1, wherein the independent bearing and the split bearing are made of a member having abrasion resistance different from that of the suction tool body.