JP2002253450A - Suction tool for floor for cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction tool for a floor for a cleaner in which a rotary shaft for wheel can be easily attached without damaging the rotary shaft attaching part of a lower case. SOLUTION: A rotary shaft 6 has a portion through which a rotary wheel is inserted in the middle thereof, a portion 7 to be inserted to an attaching hole on a lower case 7 is formed on one end of the rotary shaft 6, and a sleeve- like boss 8 for attachment facing the lower case 2 is formed on the other end. Since the rotary shaft 6 formed in such a shape is fabricated by injection molding long fiberglass reinforced nylon using a metallic mold, the rotary shaft can be formed into a free shape. In order to attach a wheel 5 for move on the front faces of both the ends of the lower face of the suction tool for floor, the insert portion 7 on one end of the rotary shaft 6 is inserted to the attaching hole on the lower case 2, the sleeve-like boss 8 for attachment formed on the other end of the rotary shaft 6 is matched with the boss seat for attachment of the lower case 2, and a screw 12 is fastened upward from the base so that the rotary shaft can be attached.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor suction tool for a vacuum cleaner such as a vacuum cleaner.

[0002]

2. Description of the Related Art A floor suction device of a vacuum cleaner has a rotating brush for effectively cleaning both a hard floor surface and a carpet, and also has a smooth movement before and after the rotating brush. , A front wheel and a rear wheel. 6 and 7 show an example thereof. FIG. 6 is a plan view of the floor suction tool, and FIG. 7 is a front bottom view of the floor suction tool.

[0005] In FIGS. 5 and 7, the upper surface of the floor suction tool is covered by an upper case 1, the lower case 2 has a lower case 2, and a rotary brush 4 is arranged in a suction port 3 on the lower surface. . On the outer circumference of the rotating brush 4, a soft and flexible blade that fits continuously on a spiral line in the longitudinal direction is attached. The dust from the suction port 3 is put on the suction airflow and sent out to the cleaner body (not shown) via the bent joint 11.
Wheels 5 for movement are provided on the front surfaces at both ends of the lower surface.

The wheels 5 are rotatably mounted on an intermediate portion of a steel rotating shaft 6 made of SW-A or the like as shown in FIGS. 8A and 8B, and both ends of the rotating shaft 6 are provided. FIGS. 9 and 9 show side views of FIG.
As shown in the plan view of FIG.
The rotating shaft 6 to which the wheels 5 are attached as described above is attached to the attaching portion (claw) of the lower case 2 made of resin at both ends 9 of the rotating shaft 6.
9 are attached and held by pressing and pressing.

FIG. 9 is a cross-sectional view of the front part of the floor suction tool shown in FIG. As for the rear wheel rotary shaft, as shown in FIG. 10, the cross section of the entire floor suction tool is attached to the mounting portion (claw) of the lower case 2 made of resin at both ends 9, 9 of the rotary shaft 6. Are attached and held by pressing and pressing.

[0006]

The rotating shaft of a conventional wheel is made of steel, and the lower case is made of resin. Due to the difference in hardness of the material, the pressing and press-fitting work on both ends of the rotating shaft will crush or loosen the mounting part (claw) of the lower case. Occurs, or
Abnormal noise sometimes occurred on the sliding surface between the wheel and the rotating shaft. Particularly when removing dust clogging, removing the rotary shaft from the lower case has been a difficult task for general users. Therefore, an object of the present invention is to provide a floor suction device for a vacuum cleaner in which a rotation shaft for a wheel can be easily mounted without damaging a rotation shaft mounting portion of a lower case.

[0007]

In order to achieve the above object, a floor suction device for a vacuum cleaner according to the first aspect of the present invention is installed in a lower case of a floor suction device having an upper case and a lower case. The rotating shaft of the rotatable wheel is made of a molded product made of long glass fiber reinforced nylon.

In this manner, the rotating shaft can be formed in any shape by the resin mold, and the material is made of the same quality as the material of the lower case. Has self-lubricating properties, so that the rotation of the wheels is improved, generation of abnormal noise can be prevented, and a light-weight wheel rotation shaft can be used.

According to a second aspect of the present invention, there is provided a floor suction device for a vacuum cleaner, wherein a rotating shaft of a rotatable wheel installed in a lower case of a floor suction device having an upper case and a lower case is made of a long glass fiber. The rotating shaft has a portion through which a rotating wheel can be inserted in the middle, and a boss in the form of a sleeve for attachment to a lower case is formed at one end of the rotating shaft.

According to a third aspect of the present invention, there is provided a floor suction device for a vacuum cleaner, wherein a rotating shaft of a rotatable wheel installed in a lower case of the floor suction device having an upper case and a lower case is made of a long glass fiber. A molded product made of reinforced nylon, the rotating shaft has a portion through which a rotating wheel can be inserted in the middle, and a sleeve-like boss for attachment to a lower case is formed at one end of the rotating shaft. The screw for fixing the rotating shaft is inserted into the boss of the rotating shaft to fix the rotating shaft.

According to a fourth aspect of the present invention, there is provided a floor suction device for a vacuum cleaner, wherein a rotating shaft of a rotatable wheel installed in a lower case of the floor suction device having an upper case and a lower case is made of a long glass fiber. A molded product made of reinforced nylon, the rotating shaft has a portion through which a rotating wheel can be inserted in the middle, a sleeve-shaped boss for attachment to the lower case is formed at one end of the rotating shaft, and the lower case is formed at the other end. The configuration is such that an insertion portion into the mounting hole is formed.

Thus, the rotating shaft can be easily assembled to the lower case, and there is no fear that the rotating shaft will come off because the fixing is performed with screws. Also,
Even if dust is entangled in the rotating portion of the wheel, the rotating shaft can be easily removed, thus facilitating maintenance. Furthermore, since the long glass fiber reinforced nylon has self-lubricating properties, the rotation of the wheels is improved, generation of abnormal noise and the like can be prevented, and a light-weight wheel rotation shaft can be used.

According to a fifth aspect of the present invention, there is provided a floor suction device for a vacuum cleaner, wherein a rotating shaft of a rotatable wheel installed on a lower case of the floor suction device having an upper case and a lower case is made of a long glass fiber. The rotary shaft is made of a reinforced nylon, and has a configuration in which the rotary shaft has a portion through which a rotary wheel can be inserted in the middle, and press-fit mounting portions for mounting portions (claws) of a lower case are formed at both ends of the rotary shaft.

In this way, the resin and the resin are press-fitted, so that damage to the fixing portion of the lower case 2 for fixing can be minimized. Further, since the glass long fiber reinforced nylon has a self-lubricating property, the The rotation property is improved, generation of abnormal noise and the like can be prevented, and a light-weight rotating shaft of a wheel can be obtained.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, since the rotating shaft of a conventional wheel is made of steel and the lower case is made of resin, there is a difference in hardness between the two materials. The above problem is solved by noting that the mounting hole of the lower case is crushed or loosened during the press-fitting operation, and that the two materials are made of the same material or devised in terms of shape.

In recent years, a long glass fiber reinforced nylon having a wide operating temperature range, excellent low-temperature impact resistance, high-temperature mechanical strength, and high dimensional stability has been known under the trade name “Plaston”. This long fiber reinforced thermoplastic resin was found to be compatible with the material of the rotating shaft for the wheels of the suction device for floors for vacuum cleaners.

Therefore, since the lower case is a resin molded product, the rotating shaft 6 of the type shown in FIGS.
Is formed of long glass fiber reinforced nylon, it can be made of the same material as the resin as in the lower case 2.

Thus, the lower case 2 made of resin is formed.
Even when both ends 9, 9 of the rotating shaft 6 are pressed and pressed into the mounting portions (claws) of the mounting and holding, respectively, the mounting portion of the lower case 2 for fixing is crushed due to the press-fitting of the resin. In addition, since the long glass fiber reinforced nylon has a self-lubricating property, the rotation of the wheel is improved, and the generation of abnormal noise and the like can be prevented. A rotation axis can be obtained.

Next, another embodiment of the present invention will be described with reference to FIGS. 1 to 5 in which a material is made of long glass fiber reinforced nylon and the shape of the rotating shaft for wheels is improved. In the drawings, the same components as those in FIGS. 6 to 10 are denoted by the same reference numerals. FIG. 1 shows another embodiment of the rotating shaft according to the present invention. The rotating shaft 6 has a portion through which a rotating wheel can be inserted.
One end of the rotating shaft 6 has a portion 7 inserted into a mounting hole of the lower case 2.
And a sleeve-like boss 8 for attachment to the lower case 2 is formed at the other end.

The rotating shaft 6 having such a shape can be formed into a free shape because the material thereof is formed by injection molding using a glass mold made of glass long fiber reinforced nylon.
Then, as shown in the bottom view of the floor suction tool of FIG. 2, in order to mount the moving wheels 5 on the front surfaces of both ends of the lower surface of the floor suction tool, one end of the rotating shaft 6 is attached to the mounting hole of the lower case 2. Insertion part 7
Is inserted, the mounting sleeve-shaped boss 8 formed on the other end of the rotating shaft 6 is matched with the mounting boss seat of the lower case 2, and the screw 12 is tightened upward from the bottom surface to mount.

FIG. 3 is a cross-sectional view of the front portion of the floor suction tool, showing the rotating shaft 6 tightened and mounted on the boss seat for mounting the lower case 2 with the screw 12. FIG. 4 is a cross-sectional view of the front part of the floor suction tool to which the wheels 5 are attached, and FIG. 5 is a cross-sectional view of the entire floor suction tool.

Accordingly, as compared with the type in which both ends of the rotating shaft are pressed and pressed into the lower case, the assembly is easier and the fixing is performed with screws, so that there is no fear of detachment. Further, even if dust is entangled with the rotating portion of the wheel, the rotating shaft can be easily removed, so that maintenance becomes easy. Furthermore, since the long glass fiber reinforced nylon has self-lubricating properties, the rotation of the wheels is improved, generation of abnormal noise and the like can be prevented, and a light-weight wheel rotation shaft can be used.

[0023]

As described above, in the suction tool for a floor of a vacuum cleaner according to the present invention, a rotary shaft can be formed in any shape by using a resin mold, and the material of the lower case is the same as that of the lower case. In addition, since the long glass fiber reinforced nylon has self-lubricating properties, the rotational properties of the wheels are improved, generation of abnormal noise and the like can be prevented, and a light-weight wheel rotating shaft can be used.

In the case of a type in which one end of the rotary shaft is formed so as to be screwable, the rotary shaft can be easily assembled to the lower case, and there is no fear that the rotary shaft comes off because it is fixed with screws. Further, even if dust is entangled with the rotating portion of the wheel, the rotating shaft can be easily removed, so that maintenance becomes easy. Furthermore, since the long glass fiber reinforced nylon has self-lubricating properties, the rotation of the wheels is improved, generation of abnormal noise and the like can be prevented, and a light-weight wheel rotation shaft can be used.

[Brief description of the drawings]

FIG. 1 is a rotary shaft for wheels used in a floor suction device for a vacuum cleaner according to the present invention.

FIG. 2 is a bottom view of the front part of the floor suction tool.

FIG. 3 is a cross-sectional view of the front part of the floor suction tool.

FIG. 4 is a cross-sectional view of a front part of a floor suction tool to which wheels are attached.

FIG. 5 is a cross-sectional view of the entire floor suction tool.

FIG. 6 is a plan view of the floor suction tool.

FIG. 7 is a front bottom view of the floor suction tool.

FIG. 8 is a rotary shaft for wheels of a conventional suction tool for a floor for a vacuum cleaner.

FIG. 9 is a cross-sectional view of the front part of the floor suction tool.

FIG. 10 is a cross-sectional view of the entire floor suction tool.

[Explanation of symbols]

 Reference Signs List 1 upper case 2 lower case 3 suction port 4 rotating brush 5 wheel (front wheel) 6 rotating shaft 7 rotating shaft end 8 sleeve-shaped boss 9 D-cut rotating shaft end 10 wheel (rear wheel) 11 bent joint 12 screw

Continuation of the front page (72) Inventor Hirotaka Kano 2-5-5-1 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Takahiro Nishiyama 2-5-5- Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Tatsunori Fukuda 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in Sanyo Electric Co., Ltd. 3B006 KA06 KA08

Claims (5)

[Claims] 1. A vacuum cleaner characterized in that a rotating shaft of a rotatable wheel installed in a lower case of a floor suction tool having an upper case and a lower case is a molded product made of glass long fiber reinforced nylon. Floor suction device. 2. The rotary shaft according to claim 1, wherein the rotary shaft has a middle portion through which a rotary wheel can be inserted, and one end of the rotary shaft is formed with a sleeve-shaped boss for attachment to a lower case. A suction device for floors for a vacuum cleaner as described above. 3. The floor suction device for a vacuum cleaner according to claim 2, wherein a screw for fixing the upper case and the lower case is inserted into a boss of the rotating shaft to fix the rotating shaft. 4. The suction tool for a floor of a vacuum cleaner according to claim 2, wherein the rotation shaft has an insertion portion formed at the other end thereof into a mounting hole of a lower case. 5. The rotary shaft has a portion through which a rotary wheel can be inserted in the middle, and press-fit mounting portions for mounting portions (claws) of a lower case are formed at both ends of the rotary shaft. Item 6. A floor suction device for a vacuum cleaner according to Item 1.