JPH09182702A - Suction member for vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate assembling work and prevent that a face to be cleaned is damaged by burrs of a guard part. SOLUTION: This suction member for a vacuum cleaner comprises: a suction member main body having a dust sucking chamber including a dust sucking opening in which on almost rectangle-shaped regulating member, that regulates a sucking operation to a face to be cleaned and that is opened on a wall face to which a connection tube is attached and which faces the face to be cleaned, is arranged, and the chamber being communicated with the connection tube, also having bearings provided on both sides of the dust sucking chamber; and a plurality of beating members constructed by a vibration shaft supported by the bearings and beating devices attached to the vibration shaft, which are arranged in the dust sucking chamber so as to almost close the dust sucking opening of the suction member main body. The suction member is constructed to suck dusts while the beating members are vibrated by a sucking pressure applied through the connection tube to beat the face to be cleaned positioning at the dust sucking opening. In this case, a guard 19 as a regulating member arranged in the dust sucking opening 18 is provided separately from the suction member main body 17. Consequently, the guard 19 can be attached afterward to facilitate the assembling work, and production of burrs when the guard 19 is formed is prevented so that the face to be cleaned of a mattress or the like is prevented from being damaged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction tool for an electric vacuum cleaner which is used for sucking dust on a surface to be cleaned such as a carpet, a tatami mat, or a blanket or a futon while giving vibration to the surface. It is about.

[0002]

2. Description of the Related Art As such a suction tool for an electric vacuum cleaner, one shown in FIGS. 6 to 8 is known. Main body 1 of suction tool 6
1 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 of these cases 21,
22 are connected by two screws on the front side and two screws on the rear side, which are inserted from the lower surface side of the lower case 22 and screwed into screw receiving bosses provided on the inner surface of the upper case 21. The overall shape of the suction tool body 11 is a generally oblong cylinder shape, and swells toward the central portion in the longitudinal direction thereof, so that even if a futon or the like is applied to the outer peripheral surface, it can easily slip off.

A dust chamber 23 extending in the longitudinal direction is formed in the lower case 22. The dust collection chamber 23 is defined by a partition wall 24 having a substantially U-shaped cross section, and a dust collection opening 25 is formed on the lower surface of the dust collection chamber 23 on the flat lower surface of the lower case 22 so as to extend in the longitudinal direction thereof and have a substantially rectangular shape.

As shown in FIGS. 6 and 8, two dust guards 31 are provided in the dust suction opening 25 so as to extend in a direction orthogonal to the longitudinal direction of the opening 25. This is to prevent the surface of the futon from entering the interior of the dust collection chamber 23 due to suction when the surface to be cleaned is a soft material such as the surface or lining of the futon or sheets. is there. The guard 31 is formed integrally with the lower case 22.

In the dust collecting chamber 23, along the longitudinal direction thereof,
Striking members 14 to 16 are provided, and the striking member 1
Both ends of 4 to 16 are fixed to the lower case 22. The striking members 14 to 16 are adapted to vibrate in the vertical direction by the suction pressure.

Each of the striking members 14 to 16 comprises a vibrating shaft 14a to 16a made of a spring wire such as a piano wire, and beaters 14b to 16b as a plurality of striking elements having the vibrating shafts 14a to 16a inserted therein. It is configured.

Vibrations of the hitting members 14 to 16 in the vertical direction hit the futon or the like, and the hitting efficiently sucks dust entering the futon or the like.

[0008]

By the way, the guard 31
Is integrally formed with the lower case 22. The lower case 22 has a partition wall 24, a side wall 50, etc., and has a complicated shape. In the integral molding, as shown in FIG. 9, the first mold 36 and the second mold 39 are used, and there are many mating surfaces S1 to S7 of the mold due to the complicated shape of the lower case 22. It is difficult to make the mating surfaces S1 to S7 airtight. Therefore, a gap may be formed on the mating surface S2 forming the cavity 38 for the guard 31, and this gap causes a burr on the guard 31. Due to the burr of the guard 31, there is a problem that the cloth such as the futon is damaged during cleaning. Incidentally, C1 is a cavity for the partition wall 24, and C2 is a cavity for the side wall 50.

Further, since the lower case 22 is provided with the partition wall 24 for forming the dust suction chamber 23, the above-mentioned striking members 14 to 16 are assembled from the dust suction opening 25 to the dust suction chamber. Although it is necessary to put it in 23 and assemble it, since the dust collection opening 25 is provided with the guard 31, there is a problem that the assembling of the hitting members 14 to 16 is very troublesome. SUMMARY OF THE INVENTION It is an object of the present invention to provide a suction tool for an electric vacuum cleaner which does not generate burrs on a guard and which is easy to assemble a hitting member.

[0010]

In order to achieve the above object, the present invention provides a dust suction device in which a suction tool main body having a connecting pipe attached to a central portion in the longitudinal direction is opened on the lower surface of the main body in the longitudinal direction. A dust collection chamber having an opening and communicating with the connection pipe is provided, and a regulation body is provided across the dust collection opening in a direction orthogonal to the longitudinal direction to regulate suction of the surface to be cleaned,
An electric vacuum cleaner in which a striking member that is vertically vibrated and strikes a surface to be cleaned is arranged in the longitudinal direction of the dust suction chamber, and both ends of the striking member are supported to substantially close the dust suction opening. In the suction tool for use, the restriction body is provided separately from the suction tool body.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of an embodiment according to the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is a perspective view showing an electric vacuum cleaner.

As shown in FIG. 3, the electric vacuum cleaner is provided with an electric vacuum cleaner body 1, a dust suction hose 2 which is detachably inserted and connected to a suction port of the main body 1, and a tip portion of the dust suction hose 2. The operating portion 3, extension pipes 4 and 5 detachably inserted into the distal end portion of the operating portion 3, and the distal end portion of the extension pipe 5 or the distal end portion of the operating portion 3 are detachably inserted and connected. The suction tool 6 is provided.

An electric blower (not shown) is built in the electric vacuum cleaner main body 1, and a dust collecting chamber (not shown) in the main body 1 is made to have a negative pressure by the operation of the electric blower. Is to be sucked in.

The structure of the suction tool 6 will be described with reference to FIGS. As shown in FIGS. 3 and 4, the suction tool 6 includes a suction tool body 17, a connection pipe 12, a pair of wheels 13, and a plurality of hitting members 14 to 16.

As shown in FIG. 4, etc., the suction tool body 17
Is assembled by assembling an upper case 21 and a lower case 20 made of a synthetic resin such as ABS resin or polypropylene with their opening faces abutting each other. Both cases 21, 2
0 is inserted from the lower surface side of the lower case 20 into the upper case 2
The front side 2 that is screwed into the screw receiving boss projectingly provided on the inner surface of 1
It is connected by two screws and two screws on the rear side.

As shown in FIGS. 4 and 5, the lower case 2
At 0, a dust suction chamber 23 extending in the longitudinal direction is formed. The dust collection chamber 23 is partitioned by a partition wall 24 having a substantially U-shaped cross section, and the lower surface opening thereof is opened as a dust collection opening 18 on the flat lower surface of the lower case 20 extending in the longitudinal direction thereof into a substantially rectangular shape. A central partition wall 26 is provided at a substantially central portion of the lower case 20. The central partition wall 26 is provided from the partition wall 24 to the central portion of the rear wall of the lower case 20. The central partition wall 26 is wide on the partition wall 24 side and narrower on the rear wall side. The ceiling wall portion of the partition wall 24 located inside the central partition wall 26 is removed, so that the inside of the central partition wall 26 and the dust collection chamber 23 are communicated with each other.

A central partition 27 is provided on the upper case 21 so that the tips of the central partitions 26 and 27 are fitted into each other in a concavo-convex manner so as to be continuous, so that the relay chamber 28 is located between the upper and lower cases 21 and 20. Is formed in. Vertical rectifying ribs 29 (see FIG. 4) are integrally provided in the relay chamber 28 across the side walls of the central partition wall 27. As shown in the figure, in the longitudinal center portion of the rear wall of the upper case 21,
A substantially cylindrical projecting cylinder portion 30 that communicates with the rear end of the relay chamber 28 is integrally provided so as to project rearward.
A connection pipe 12 is fitted and attached to the.

The connecting pipe 12 is rotatable around the axis of the projecting cylinder portion 30 and communicates with the dust collecting chamber 23 through the relay chamber 28. The connecting pipe 12 is the extension pipe 5 described above.
When the electric vacuum cleaner main body 1 is operated, the suction pressure generated by the electric blower is exerted on the dust suction chamber 23. There is.

As shown in FIGS. 1 and 4, the suction tool body 1
The lower surface of 7 is provided with, for example, two guards 19 as a restricting body that is flush with the lower surface. These guards 19
Crosses the dust suction opening 18 in the front-rear direction, that is, the dust suction opening 1
8 is formed by a bridge extending in the area of 8, and spaced apart from each other in the longitudinal central portion of the dust suction opening 18 and parallel to each other. The dust suction opening 18 is divided into three openings by the guard 19.

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, the soft cleaning surface is prevented from being sucked into the dust collecting chamber 23 by the guard 19 during cleaning. By blocking or restricting, the dust suction opening 18 is prevented from being completely closed, and a soft surface to be cleaned is prevented from entering the dust suction chamber 23 through the striking members 14 to 16. Further, since the guard 19 is flush with the lower surface of the suction tool body 17, the guard 19 functions to improve the traveling property of the suction tool body 17 in order to facilitate traveling on the surface to be cleaned.

A bearing 32 and a bearing 33 are housed and disposed in a pair of bearing mounting recesses formed at both ends of the dust suction chamber 23 in the longitudinal direction.

The bearing 32 has one upper bearing hole in the upper center and two lower bearing holes located below the upper bearing hole and at right and left positions centered on the upper bearing hole. . The bearing 32 is an independent bearing composed of one member. The lower case 22 of the bearing 32 is housed in the bearing mounting recess by inserting through the opening of the bearing mounting recess. The bearing 32 is housed in the bearing mounting recess in a press-fitted state.

The bearing 33 is composed of a fixed bearing that supports one outer circumference of the vibrating shaft, which will be described later, and a mounting bearing that supports the other outer circumference of the vibrating shaft. That is, the bearing 33 is composed of a fixed bearing and a mounting bearing which are divided from each other, and both constitute a divided bearing.

In the dust collecting chamber 23, along the longitudinal direction thereof,
The striking members 14 to 16 are built in so as to vibrate in the vertical direction by the suction pressure. Each striking member 14-16,
Vibration shafts 14a to 16a made of spring wire material such as piano wire
And beaters 14b to 16b as a plurality of tapping elements, through which the vibrating shafts 14a to 16a are inserted. The beaters 14b to 16b are short tubes,
It is made of rubber or elastomer 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 striking member 14 is mounted by inserting one end of the vibrating shaft 14a into a lower bearing hole of the bearing 32 near the front wall portion of the dust collection chamber 23 and the other end into a bearing portion of the bearing 33. Has been. Similarly, the hitting member 15 is
One end of the vibrating shaft 15a is inserted into a lower bearing hole of the bearing 32 near the rear wall portion of the dust suction chamber 23, and the other end of the vibrating shaft 15a is attached to the bearing 33
It is attached by being inserted into the bearing part of the. The remaining striking member 16 has one end side of the vibration shaft 16a inserted into the upper bearing hole of the bearing 32, and the other end side of the bearing 33.
It is attached by being inserted into the bearing part of the.

In this way, the striking members 14 to 16 are arranged in the dust collecting chamber 23, and a pair of guards 19 are provided at the dust collecting opening 18 of the dust collecting chamber 23 at the time of arrangement. Despite this, since the bearing 33 supporting the other ends of the vibrating shafts 14a to 16a of the striking members 14 to 16 is a split bearing composed of a fixed bearing and a mounting bearing, it can be easily arranged. It is possible.

Of the striking members 14 to 16 mounted as described above, the striking members 14 and 15 are at the same height position and are individually brought close to the front and rear wall portions of the dust collection chamber 23. In addition, the striking member 16 is arranged above the striking members 14 and 15, and
It is close to the outer circumference of the upper part of Nos. 4 and 15. As a result, when viewed from below, each of the hitting members 14 to 16 has a dust suction opening 18
Are arranged side by side so as to substantially close each other. When the suction pressure is not working, each of the striking members 14 to 16 maintains a horizontal posture by its elastic force. In addition, adjacent striking members 14 to 16 may be in contact with each other.
These striking members 14 to 16 may be provided at the same height position without changing the height position vertically.

When the electric vacuum cleaner body 1 is operated in the above-mentioned structure, the suction pressure exerted on the suction tool 6 communicating with the dust collection chamber through the dust collection hose 2 and the extension pipes 4 and 5 is the suction pressure. Since the dust spreads over the entire area of the dust collection chamber 23 via the relay chamber 28 in the tool 6, cleaning is performed by striking the surface to be cleaned such as the futon and the sheets laid on it with the striking members 14 and 15 as follows. be able to.

That is, since the dust suction opening 18 of the dust suction chamber 23 of the suction tool 6 is substantially closed by the plurality of striking members 14 to 16, the vacuum degree of the dust suction chamber 23 increases as the suction pressure spreads. The striking members 14 to 16 are attracted substantially simultaneously against the elastic force of the vibrating shafts 14a to 16a and warp to be convex upward. By the way, the elastic force of the vibrating shaft 16a of the striking member 16 is equal to that of the striking members 1 on both sides thereof.
Since the elastic force of the vibrating shafts 14a and 15a of Nos. 4 and 15 is smaller than the elastic force of the vibrating shafts 14a and 15a, the amount of warp of the striking member 16 becomes larger than the amount of warp of the striking members 14 and 15 from a certain point after the suction is started, and the adjacent striking members 16 are The gap between the hitting members 14 and 15 becomes larger, and the degree of vacuum in the upper portion of each of the hitting members 14 to 16 in the dust suction chamber 23 decreases.

Therefore, each of the hitting members 14 to 16 is restored by its elastic force, and the hitting members 14 to 16 are warped so as to be convex downward due to the inertial force at that time. Hit the surface to be cleaned, such as the surface of the futon that is being sucked. In this case, due to the difference in elastic force,
The striking members 14 and 15 are faster than the striking member 16 and are warped and deformed downward to perform the striking operation, and the striking member 16 strikes the surface to be cleaned with the striking members 14 and 15. Hindered by. After the hitting of the surface to be cleaned as described above, the hitting members 14 to 16 return to the original position where they substantially close the dust suction opening 18, so that the above operations are repeated and the hitting members 14 to 16 are repeated. It vibrates vertically. Thereby, dust can be absorbed while hitting the surface to be cleaned.

In FIG. 4, reference numeral 34 indicates an inlet of the intake passage, which is an inlet for intake when the dust suction opening 18 is closed. Further, reference numeral 35 indicates an air filter.

In FIGS. 1 and 2, in the guard 19 as a restricting body provided in parallel with each other in the longitudinal center of the dust suction opening 18 of the suction tool body 17, a lower case 20 of the suction tool body 17 is provided. Both ends 19a and 19b are fitted and disposed in engagement grooves 18a and 18a that are provided separately at the edge of the dust suction opening 18 and extend along the longitudinal direction.

Moreover, although not shown, the engaging groove 18a is provided with a plurality of locking recesses 18b in the longitudinal direction. The guard 19 is slidable in the engagement groove 18a along the longitudinal direction, and the locking recess 18
By fixing both ends 19a and 19b to b, the fixed position can be selected. The guard 19 is made of a high sliding material such as polypropylene or nylon.

Therefore, the guard 19 is the suction tool body 17
Since it is a separate body from the above, the structure of the mold for molding the guard 19 alone is simple, and the butting of the mold can be performed accurately, so that burr is generated in the guard 19. Can be prevented. By preventing burrs from being generated on the guard 19, it is possible to reliably prevent the surface to be cleaned such as the futon from being damaged.

Further, the guard 19 is provided with striking members 14-16.
Since it can be assembled to the lower case 20 after it is assembled in the dust collection chamber 23, the guard 19 does not get in the way when the hitting members 14 to 16 are assembled, and the assembly is easy, and the suction tool It is possible to greatly improve the work efficiency of assembly.

Moreover, since the guard 19 with which the surface to be cleaned comes into contact is made of a highly sliding material, the operation of the suction tool is extremely smooth, and its running performance can be improved even if the wheels are omitted. it can.

Further, since the guard 19 is slidable in the longitudinal direction of the dust suction opening 18, when the guard 19 is retracted to both sides and used when cleaning a surface to be cleaned such as a mattress or a tatami mat, the striking member 14-. Since the guard 19 does not interfere with the striking operation of 16, the striking members 14 to 16 can efficiently strike the mattress or the like. In this case, the mattress or tatami does not get into the dust suction opening 18 because the surface is hard to some extent.

In this embodiment, the guard 19 is provided slidably in the longitudinal direction of the dust suction opening 18, but the same effect can be obtained even if the guard 19 is simply detachably attached to the suction tool body 17. Therefore, it goes without saying that this may be done.

[0040]

As described above, according to the first aspect of the present invention.
According to the suction tool for the electric vacuum cleaner described in the above, since the regulating body is provided separately from the suction tool body, it is possible to prevent the occurrence of burrs and the like and prevent damage to the surface to be cleaned of the futon and the like. It is possible to improve the sex.

Further, according to the suction tool for the electric vacuum cleaner according to the second aspect of the present invention, since the regulating body is made of the high sliding material, the operability of the suction tool can be made smooth. Even if the wheels are omitted, the running performance can be improved.

Further, according to the suction tool for an electric vacuum cleaner according to the third aspect of the present invention, it is possible to selectively use a futon, a blanket or the like and a mattress, a tatami mat or the like, which is extremely convenient. .

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a perspective view of the electric vacuum cleaner.

FIG. 4 is a cross-sectional view of the suction tool for the electric vacuum cleaner.

FIG. 5 is a vertical cross-sectional view of a suction tool for an electric vacuum cleaner.

FIG. 6 is a bottom view showing a conventional suction tool.

FIG. 7 is a cross-sectional view of a conventional suction device.

FIG. 8 is a vertical cross-sectional view of a conventional suction device.

FIG. 9 is a cross-sectional view showing a mold for explaining conventional problems.

[Explanation of symbols]

 17 Suction tool body 18 Dust suction opening 19 Guard 20 Lower case

Claims (3)

[Claims] 1. A suction tool main body having a connecting pipe attached to a central portion in the longitudinal direction, and a dust suction chamber communicating with the connecting pipe having a dust suction opening extending in the longitudinal direction on the lower surface of the main body. In addition, a striking member is provided in the longitudinal direction of the dust-collecting chamber, which is provided with a regulating body that spans in a direction orthogonal to the longitudinal direction of the dust suction opening and regulates suction of the surface to be cleaned, and vibrates vertically to strike the surface to be cleaned. In a suction tool for an electric vacuum cleaner, which is arranged across and is arranged so as to support both ends of the striking member and substantially close the dust suction opening, the regulating body is provided separately from the suction tool body. Suction tool for vacuum cleaner. 2. The suction tool for an electric vacuum cleaner according to claim 1, wherein the regulator is made of a high sliding material. 3. The suction tool for an electric vacuum cleaner according to claim 1, wherein the restriction body is provided slidably or detachably along the longitudinal direction of the suction tool body.