JPH0723884A - Rotary brush for suction port body - Google Patents

Abstract

PURPOSE:To form the rotating body having a lighter weight and good balance by forming plural split pieces by injection molding and integrating these split pieces by screwing or adhering to form the split pieces to a uniform thickness. CONSTITUTION:The split pieces 43a, 43b of the rotating body 41 are formed by injection molding. The split pieces 43a, 43b are molded to the arbitrary specified thickness to the shape twisted by 180 deg. in an axial direction and are simultaneously formed with mounting parts 56. Screws 50 are inserted into through-holes 47 and threaded holes 48 of the split pieces 43a, 43b to screw these pieces. The split pieces 43a, 43b are otherwise integrated to a cylindrical shape and the rotating body 41 is assembled when ribs 51 on the inside surfaces of the split pieces 43a, 43b are engaged and adhered. Since the split pieces 43a, 43b are integrated to the cylindrical shape, the lightweight rotating body 41 having the good balance is obtd. A cleaning body 42 is mounted between the split pieces 43a and the split piece 43b. The balance weight on the inside surface of the rotating body 41 has inertia moment around its axis and this moment stably rotates the rotating body 41 when the rotary brush is rotated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary brush provided on a suction port of an electric vacuum cleaner.

[0002]

2. Description of the Related Art Conventionally, an electric vacuum cleaner has a suction port body 4 whose outer appearance is formed by an upper case 1, a lower case 2 and a lid 3 as shown in FIGS. A vertically rotatable drive pipe 5 is provided at the rear of the suction port body 4, and a rotatable suction pipe 6 is connected to the tip of the drive pipe 5. The lower case 2 acts as a sled for a carpet, and has an opening 7 for collecting dust, which is formed in a horizontally long rectangle, and a sealing material 8 is provided behind the opening 7. Further, the lower case 2 is provided with a front wheel 9 and a rear wheel 10, and the front and rear wheels 9 and 10 are configured to leave a constant gap between the lower case 2 and the floor surface.

A brush chamber 13 in which a rotary brush 11 is rotatably mounted via a support 12 in the suction port body 4.
And a communication path 14 communicating from the brush chamber 13 to the drive pipe 5 side, and a dust suction path 15 extending from the opening 7 to the suction pipe 6 is formed. And the dust suction passage 15
A drive motor 16 is disposed outside the drive unit to rotate the rotary brush 11 via a belt 17. A bumper 18 for cushioning obstacles is provided between the upper case 1 and the lower case 2.

The rotating brush 11 is composed of a rotating body 19 and supports 12 fixed to both ends thereof, and in order to enhance the cleaning effect, as shown in FIGS. 21 and those provided with FIGS.
Plate-shaped blade 22 such as rubber or vinyl chloride as in 8
And the brush bristles 21 are provided, or the brush bristles 21 fixed to a brush base 23 made of rubber or the like as shown in FIGS.
Some have been provided. In addition, as shown in FIGS. 31 to 33, the wheel 24 is provided at the end of the rotating body 19, and FIG.
There are wheels 4 to 36 in which the wheel 24 is provided with play through the wheel holder 25.

The rotating body 19 is formed by twisting by a profile extrusion molding, and a protrusion 20 is formed on the outer peripheral surface thereof.
Alternatively, an insertion groove 26 such as a brush as shown in FIG. 37 is integrally formed. And both ends of the rotating body 19 are shown in FIGS.
6, the mounting portion 27 for mounting the support 12 and the support shaft 2
A shaft hole 29 into which 8 is inserted is formed by machining such as a drill or a milling cutter after extrusion molding.

[0006]

However, in the conventional rotary brush 11 of the suction port body 4, since the rotary body 19 is formed by the profile extrusion molding, the interior of the rotary body 19 is solid and the weight of the product is heavy. Then, the operability of the suction port body 4 was deteriorated.

Further, the mounting portion 27 and the shaft hole 2 are machined.
9 is formed, the center deviation of the shaft hole 29 occurs due to variations in processing. Due to such center misalignment and weight increase of the rotating body 19, when the rotating brush 11 is rotated, rotation failure or rotational vibration occurs, and noise at the suction port body 4 becomes large.

For this reason, the rotary vibration is prevented by forming the protrusions 20 on the rotary body 19 or by attaching a balance weight or the like on the surface of the rotary body 19, but the floor surface or the fold may be damaged. It was a cause and was unsightly in appearance.

Further, the product formation by the profile extrusion molding is
It is difficult to set the product balance and molding conditions during molding,
Further, since the post-processing using a machine or the like requires precision, a skilled worker is required. Moreover, since separate parts such as the support 12 and the wheels 24 are required, there is a problem that the product cost becomes high.

In view of the above, it is an object of the present invention to provide a rotary brush having a suction port body which is light in weight and prevents rotational vibration, and which is easy to assemble.

[0011]

As shown in FIG. 1, a means for solving the problems according to the present invention includes a rotary body 41 rotatably supported by a suction port body 4 via a support body 12, and an outer circumference of the rotary body 41. A cleaning body 42 provided on the surface along the axial direction, and the rotating body 41 is composed of a plurality of divided pieces 43a and 43b divided along the axial direction, and the divided pieces 43a and 43b are injection molded. Is formed by being twisted in the axial direction by means of the joining means 44, and the divided pieces 43a and 43b are integrated into a cylindrical shape by the joining means 44. Then, the support 12 is attached to the rotating body 41 by the attachment portion 56, and the adjacent divided pieces 43a, 4a
The cleaning body 42 is attached between 3b. In addition,
The protrusion body 66 integrally formed on the outer surface of the divided pieces 43a and 43b may be used as the cleaning body 42.

Then, as the joining means 44, the divided piece 43
through-hole 47 formed in a and divided pieces 43b facing each other
A screw 50 is inserted into the screw hole 48 formed in the above to fix the screw, or ribs 51 formed on the inner surface of each of the divided pieces 43a and 43b are engaged and adhered to each other.

In order to prevent rotational vibration, a balance weight 60 is attached to the inner surface of the rotating body 41, or the rotating body 41 is
A hollow wheel 61 is provided at the end of the
4 is injected and sealed, or the divided pieces 43a and 43b are provided with a meat stealing hole 65 or a recess.

Further, a wheel 67 is provided at an end of the rotating body 41, an engaging portion 68 for engaging the wheel 67 is formed at an end of the divided pieces 43a and 43b, and the wheel 67 is provided with the engaging portion. An engaged portion 69 that engages with 68 is formed. Then, the engaged portion 69 of the wheel 67 and the engaging portion 7 of the rotating body 41.
A play is provided in the circumferential direction with respect to 0.

The mounting portion 56 is divided into the divided pieces 43a,
It is integrally formed with 43b. Further, instead of using the wheel 67 or the support 12 as a separate component, one split piece 43
Each piece 43 is formed integrally with a or is divided into pieces.
It is integrally formed with a and 43b. In particular, the wheels 71a, 71b
May be formed of a soft material different from the divided pieces 43a and 43b. Further, the outer surface of the integrally formed support body 12 serves as a driving force transmission portion.

[0016]

In the above means for solving the problem, first, the divided pieces 43a and 43b of the rotating body 41 are formed by injection molding. The divided pieces 43a and 43b are formed in a shape twisted by 180 degrees in the axial direction to have an arbitrary constant thickness. Through hole 47 at the same time as molding
A mounting portion 56 for mounting the screw hole 48 and the support 12 is formed.

Then, a screw 50 is inserted into the through hole 47 and the screw hole 48 of each of the divided pieces 43a and 43b to perform screwing. Alternatively, the rib 5 on the inner surface of each divided piece 43a, 43b
When 1 is engaged and adhered, the divided pieces 43a and 43b are integrated into a cylindrical shape to assemble the rotating body 41. In this way, since the divided pieces 43a and 43b are integrated into a cylindrical shape, the rotating body 41 is lightweight and well-balanced.

The cleaning body 42 is mounted between the divided pieces 43a and 43b. Alternatively, instead of the cleaning body 42, the protrusions 66 are integrally formed on the divided pieces 43a and 43b.
Next, the support 12 is fixed to the mounting portion 56, and the rotating brush is completed.

Here, when the rotary brush is rotated, the balance weight 60 on the inner surface of the rotating body 41 has an inertia moment to rotate about the axis, and this moment of inertia causes imbalance due to manufacturing variations of the rotating body 41. Correspondingly, it acts to maintain a stable rotation of the rotating body 41 about its axis. As a result, the rotational balance of the rotating body 41 is improved.

Similarly, the liquid 64 in the wheel 61 moves in the wheel 61 by the centrifugal force and plays the role of a balance weight to improve the rotational balance of the rotating body 41 and reduce the rotational vibration.

Further, if the meat stealing holes 65 and the recesses are formed in the divided pieces 43a and 43b, the rotating body 41 becomes light in weight, and the moment of inertia during rotation becomes small, so that rotational vibration can be reduced.

Then, the wheel 67 can be easily fixed to the rotating body 41 only by engaging the engaged portion 69 of the wheel 67 with the engaging portion 68 of the split piece 43a. Alternatively, the wheel is formed integrally with the 67-divided pieces 43a and 43b. in this way,
By providing the wheels 67, when the rotating brush rotates,
The wheel 67 abuts on the floor surface to reduce the operation force for moving the suction port body 4 in the front-rear direction.

By the way, at the start of rotation of the rotary brush, the rotor 41 immediately rotates, but the wheels 67 cannot rotate immediately due to friction with the floor surface. Therefore, if a play is provided between the engaged portion 69 and the engagement portion 70, the wheel 67 rotates together with the rotating body 41 after absorbing the play, so that the drive motor 16 is not loaded at the time of starting. The rotating brush rotates smoothly.

[0024]

【Example】

(First Embodiment) FIG. 1 is an exploded perspective view of a rotary brush of a suction port body in a first embodiment of the present invention, FIG. 2 is a sectional view of the rotary brush of the first embodiment, and FIG. 3 is a perspective view of the rotary brush. FIG. 4 is a perspective view of the suction port body. It should be noted that the same components as the conventional ones are denoted by the same reference numerals.

As shown in FIGS. 3 and 4, the rotary brush of the suction port body of the present embodiment has a rotating body 41 rotatably supported by the suction port body 4 via a support 12, and the rotating body 41. The cleaning body 42 is provided on the outer peripheral surface along the axial direction. Since the structure of the suction port body 4 is the same as the conventional one, detailed description thereof will be omitted.

As shown in FIG. 1, the rotating body 41 is composed of two divided pieces 43a and 43b which are divided along the axial direction, and the divided pieces 43a and 43b are integrated into a cylindrical shape by a joining means 44. ing.

The divided pieces 43a, 43b are formed by injection molding using a hard synthetic resin, and are formed in a semi-arcuate shape in cross section having a uniform thickness with a shape twisted 180 degrees in the axial direction. There is.

A recess 45 is provided on the outer peripheral surface of each of the divided pieces 43a, 43b, and a convex portion 46 is provided on the inner peripheral surface corresponding to the recess 45 as shown in FIG.
7 is penetrated. On the inner peripheral surface of the other divided piece 43b, a receiving portion 49 having a screw hole 48 is formed in a protruding manner at a position facing the through hole 47. Then, as shown in FIG. 2, the convex portion 46 and the receiving portion 49 are engaged with each other as the joining means 44, and the screw 50 is inserted into the through hole 47 and the screw hole 48 to be fixed by screwing. At this time, the head of the screw 50 is arranged so as not to go out from the outer peripheral surface of the divided pieces 43a and 43b. Five ribs 51 are erected on the inner surface of each of the divided pieces 43a and 43b at corresponding positions, and when the divided pieces 43a and 43b are joined, the corresponding ribs 51 are brought into contact with each other.

The support body 12 is provided with a support shaft 52 rotatably supported by the suction port body 4 and a holder 53 which penetrates the support shaft 52 and engages the divided pieces 43a and 43b. 52 is integrated with the holder 53 by insert molding. The holder 53 is formed with a hollow hole 54 with a hollow portion. On the outer peripheral surface of one holder 53, mountain-shaped teeth 55 as a driving force transmitting portion are formed, and the timing belt 17 is wound around the mountain-shaped teeth 55 and the drive pulley. Then, the rotating brush is rotationally driven by the motor 16 or the fan.

At both ends of each of the divided pieces 43a and 43b, a mounting portion 56 for mounting the support 12 is provided, and the mounting portion 56 has a cutout portion formed at both ends of one of the divided pieces 43a. It has a fixed base 57 and a substantially U-shaped receiving base 58 that engages with the fixed base 57 formed on the other divided piece 43b. And the circular hole 54 of the holder 53
The fixed base 57 and the pedestal 58 are fitted together. The fixed base 5
A shaft hole 59 is formed in 7.

When the two divided pieces 43a and 43b are combined, a spiral gap is formed between them. Brush bristles 21 such as rubber fixed to a brush base 23 are attached to the gap as a cleaning body 42.

In the above structure, in order to manufacture the rotary brush, first, the divided pieces 43a and 43b of the rotary body 41 are formed of a hard synthetic resin by injection molding. Split pieces 43a, 4
3b is a shape twisted 180 degrees in the axial direction and has a constant thickness.
At the same time with the divided pieces 43a and 43b, the rib 51 and the fixing base 57 are provided.
The pedestal 58 is integrally formed, and the through hole 47, the screw hole 48, and the shaft hole 59 are formed.

The projections 46 and the receiving portions 49, the fixed base 57, the receiving base 58, and the ribs 51 of the two divided pieces 43a and 43b are engaged with each other, and the through holes 47 and the screw holes 48 are formed.
Align the position of. Then, a screw 50 is inserted into the through hole 47 and the screw hole 48 to fix the screw. Split pieces 43a, 4
3b is cylindrically integrated to form a rotating body 41.
At this time, a gap is formed between the divided piece 43a and the divided piece 43b, and the cleaning body 42 is inserted from the end of the rotating body 41 and mounted in the gap.

Next, the support shaft 52 is press-fitted into the shaft holes 59 of the divided pieces 43a and 43b, and the holder 53 is fitted into the mounting portion 56 to complete the rotary brush. Then, the rotating brush is mounted in the suction port body 4.

By forming the rotary body 41 from the two injection-molded divided pieces 43a and 43b as described above,
Since the divided pieces 43a and 43b can be made to have a uniform thickness and the rotator 41 is hollow, weight reduction can be realized. Then, the divided pieces 43a, 4 formed symmetrically along the axial direction.
Since 3b are aligned, a well-balanced rotating body 41 can be formed. Therefore, it is possible to reduce rotation failure and rotation vibration during rotation.

Further, the rib 51, the fixing base 57 and the receiving base 58 can be integrally formed with the divided pieces 43a and 43b, and the through hole 4 can be formed.
5, the screw hole 47 and the shaft hole 59 can be formed at the same time, so that it is not necessary to form a mounting portion or the like by conventional machining. Therefore, the labor of the operator can be saved, the work efficiency can be improved, and the number of parts can be reduced, so that the cost of the product can be reduced.

(Second Embodiment) FIG. 5 is an exploded perspective view of a rotating brush according to a second embodiment. In the rotary brush of the suction port body of the present embodiment, as shown in FIG. 5, the balance weight 60 made of lead or the like is attached to the inner surface of the rotary body 41 of the first embodiment. The balance weight 60 is attached to a position that eliminates the imbalance when the rotating body 41 is rotated.

As described above, by mounting the balance weight 60, the balance weight 60 has an inertia moment to rotate about the axis, and this moment of inertia corresponds to the unbalance due to the manufacturing variation of the rotating body 41 and rotates. Maintains stable rotation of body 41 about its axis. Therefore, the balance of the rotating body 41 is improved, the rotational vibration can be easily reduced, and the cost can be reduced. Further, since it is attached to the inner surface of the rotating body 41, the appearance of the rotating body is not made uncomfortable as in the conventional case.

(Third Embodiment) FIG. 6 is a perspective view of a rotating brush of the third embodiment, and FIG. 7 is a partial sectional view of the rotating brush.
As shown in FIG. 6, the rotary brush of the suction port body of the present embodiment has wheels 61 provided between the end of the rotary body 41 and the support 12. The wheel 61 has a function of coming into contact with the floor surface to reduce the operation force of the front-back movement of the suction port body 4 while the rotating brush is rotating.

As shown in FIG. 7, the wheel 61 has a rotating body 41.
It has a two-step boring that is fitted to the outside, and is provided with a recessed circular recess 62 that fits into the mounting portion 56, and a shaft fitting portion 63 that penetrates the support shaft 52 in the center. The wheel 61 is formed hollow, and water 64 is injected and sealed inside the wheel 61. However, the amount of water 64 in the wheel 61 is 70 to 80% of the inner volume of the wheel 61. And the support 12
The wheel 61 and the support 12 are attached to the rotating body 41 by press-fitting the support shaft 52 of the above into the shaft hole 59 and the shaft fitting portion 63. The other structure is the same as that of the second embodiment.

When the rotating body 41 rotates, the wheels 6
The water 64 that has been injected and sealed into the inside of the wheel
Move in 1. As a result, the wheel 61 fulfills the function of the balance weight, the rotation balance of the rotating body 41 is improved, and it is possible to reduce the rotation failure and the rotation vibration.

(Fourth Embodiment) FIG. 8 is a perspective view of a rotary brush of the fourth embodiment, and FIG. 9 is a sectional view of the rotary brush. As shown in FIGS. 8 and 9, the rotary brush of the suction port body according to the present embodiment is provided with the meat stealing hole 65 in the divided pieces 43a and 43b. The meat stealing holes 65 are regularly arranged from end to end along the divided pieces 43a and 43b. Instead of the balance weight 60, the meat stealing hole 65 may be formed only at the position where the unbalance is eliminated. Other configurations are similar to those of the first embodiment.

By forming the meat stealing hole 65 in this way, the weight can be further reduced and the moment of inertia during rotation can be reduced, so that the balance of the rotating body 41 is improved and rotational vibration can be reduced. . Moreover, since the amount of resin used is small, the cost of the product can be reduced.

(Fifth Embodiment) FIG. 10 is a perspective view of a rotating brush of a fifth embodiment, FIG. 11 is a sectional view taken along line AA of FIG. 10, and FIG.
2 is a BB sectional view of FIG. As shown in FIGS. 10 to 12, the rotary brush of the suction port body according to the present embodiment has split pieces 43a,
A protrusion 66 as a cleaning body is integrally formed on the outer surface of 43b. The protrusion 66 is formed in a substantially U shape.
The rotator 41 has a length divided into four in the axial direction, and four rotators 41 are provided at positions displaced by 90 degrees along the axial direction. At this time, the divided pieces 43a and 43b are formed so that no gap is formed when they are combined.

In the conventional rotary brush, since the protrusions are formed in a continuous band shape, the carpet cannot be effectively struck, but in the present embodiment, the carpet is struck four times with one rotation. This means that the carpet can be vibrated to raise the dust and clean effectively.

By integrally forming the protrusion 66 on the divided pieces 43a and 43b in this manner, the brush bristles 21 of the first embodiment are not required, and the cost can be reduced by reducing the number of parts.

(Sixth Embodiment) FIG. 13 is an exploded perspective view of a rotary brush of a sixth embodiment, FIG. 14 is a partially cutaway front view of the rotary brush, and FIG. 15 is a sectional view taken along line CC of FIG. As shown in FIG. 13, the rotary brush of the suction port body of this embodiment has a rotary body 41.
A ring-shaped wheel 67 is externally fitted to the end of the wheel 67, a key groove that is an engaging portion 68 that engages with the wheel 67 is provided at both ends of the one divided piece 43a, and the key groove is provided on the inner surface side of the wheel 67. A key, which is an engaged portion 69 with respect to the key groove 68, is provided in a protruding manner. As shown in FIGS. 14 and 15, the wheel 67 is fixed by fitting the key 69 into the key groove 68 of the split piece 43a and attaching the support 12 from the outside thereof.
Other configurations are similar to those of the first embodiment.

In this way, the key groove 6 is formed on the divided piece 43a.
By forming 8 at the same time as injection molding, post-processing by a machine or the like for forming a conventional mounting portion for mounting a wheel becomes unnecessary, and the cost of the product can be reduced.

(Seventh Embodiment) FIG. 16 is a sectional view of a rotary brush end portion of a seventh embodiment, and FIG. 17 is a sectional view taken along line DD of FIG. The rotary brush of the suction port body of this embodiment is shown in FIGS.
7, a play is provided in the circumferential direction between the wheel 67 and the rotating body 41. That is, the width in the circumferential direction of the key groove 70 of the divided piece 43a is formed to be about 1.5 times or more the width a of the key 69 of the wheel 67, and the wheel 67 has the key groove 70.
It is possible to move in the circumferential direction within the range. The other structure is similar to that of the sixth embodiment.

When the suction port body 4 is placed on the floor surface during cleaning, the wheels 67 come into contact with the floor surface. Then, when the rotary brush is rotated, the rotating body 41 immediately rotates, but the wheels 67 cannot immediately rotate due to friction with the floor surface. After being absorbed by the play, the wheel 67 rotates together with the rotating body 41. Therefore, the load is not applied to the drive motor 16 at the time of starting, and the rotating brush rotates smoothly.

(Eighth Embodiment) FIG. 18 is an exploded perspective view of a rotating brush according to an eighth embodiment, FIG. 19 is a sectional view of an end portion of the rotating brush, and FIG. 20 is a sectional view taken along line EE of FIG. As shown in FIG. 18, the rotary brush of the suction port body according to the present embodiment has the ends of the respective divided pieces 43a and 43b formed thick, and the thick portions 71a and 71b are annularly connected to each other to form a wheel. Become.
When the divided pieces 43a and 43b are joined and integrated into a cylindrical shape, the wheels 71a and 71b are simultaneously integrated and serve as the wheels 71a and 71b. Other configurations are similar to those of the first embodiment.

As described above, since the wheels 71a and 71b divided into the divided pieces 43a and 43b are integrally formed, the wheel as a separate component is not required, and the cost can be reduced by reducing the number of components.

(Ninth Embodiment) FIG. 21 is an exploded perspective view of a rotating brush according to a ninth embodiment. In the rotary brush of the suction port body according to the present embodiment, as shown in FIG. 21, the support body 12 is integrally formed on both ends of the one divided piece 43a. Further, mountain-shaped teeth 55 are simultaneously formed on the outer peripheral surface of the support 12 on one side, and the support shaft 52 is simultaneously mounted by insert molding. Other configurations are similar to those of the first embodiment.

By integrally forming the support body 12 on the divided piece 43a in this manner, the mounting work becomes unnecessary.
Since the number of parts can be reduced, the cost can be reduced. Moreover, the support shaft 52 can be integrally formed, and the mounting portion 56 need not be formed, so that the working process can be further simplified.

(Tenth Embodiment) FIG. 22 is an exploded perspective view of a rotary brush of the tenth embodiment. As shown in FIG. 22, the rotary brush of the suction port body according to the present embodiment has one end of each of the divided pieces 43a and 43b formed thick, and the thick portions 72a and 72b are continuously formed in an annular shape to serve as a driving force transmission portion. It becomes the pulley of. When the divided pieces 43a and 43b are joined and integrated into a cylindrical shape, the pulleys 72a and 72b are integrated into the pulleys 72a and 72b at the same time. The support shaft 52 is simultaneously attached to one of the divided pieces 43a by insert molding, and the holder 53 is fitted to both ends of the divided pieces 43a and 43b.

Since the pulleys 72a and 72b are formed integrally with the respective divided pieces 43a and 43b in this manner, a flat belt can be used instead of the timing belt 17, and the chevron teeth 55 of the holder 53 can be eliminated. One kind of holder 5
Since two 3 can be used, the number of parts can be reduced and the work process can be simplified, and the cost of the product can be reduced.

The present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention.

For example, in the first embodiment, the cleaning body 42
Although the brush base 23 and the brush bristles 21 are attached to the above, the brush bristles 21 may be directly planted in the rotating body 41, or a blade of rubber or the like may be used. Also,
The joining means 44 of the divided pieces 43a and 43b is provided with the respective divided pieces 43.
The ribs 51 of a and 43b may be brought into contact with each other and joined by ultrasonic welding, an adhesive, or the like. Alternatively, divided piece 4
The support body 12 fitted to both ends of 3a and 43b may be used as the joining means 44. Further, the mounting portion 56 may be symmetrically divided about the axis and formed into the respective divided pieces 43a and 43b.

In the fourth embodiment, the split piece 43 is used.
Although the meat stealing holes 65 are provided in a and 43b, they may be recessed.

In the eighth embodiment, the wheels 71 are
Although a and 71b are divided and integrally formed with the divided pieces 43a and 43b, they may be integrally formed into one divided piece without being divided. Further, the wheels 71a and 71b may be double-molded with a soft material.

The support 12 of the ninth embodiment may be divided and integrally formed with the divided pieces 43a and 43b.

Further, the dividing pieces 43a and 43b are not limited to two divisions, but may be divided into a plurality of divisions. Also, it may not be twisted.

[0063]

As is apparent from the above description, according to the present invention, since a plurality of divided pieces are formed by injection molding and they are integrated by screwing or bonding, the divided pieces have a uniform wall thickness. It can be formed to have a large thickness, can realize a lightweight and well-balanced rotating body, and prevent rotation failure and rotation vibration during rotation. Here, when the ribs on the inner surface of the divided piece are engaged and adhered to each other, the work such as screwing is unnecessary, the work process can be reduced, and the assembly becomes easy.

Further, since the through hole and the screw hole of the joining means, the support and the mounting portion, the projection and the wheel, and the engaging portion for separately mounting the wheel can be formed at the same time when the divided pieces are molded. Further, it is not necessary to form a mounting portion or the like by machining, the labor of the operator can be saved, the work process and the number of parts can be reduced, and the cost of the product can be reduced.

Since the balance weight is provided on the inner surface of the rotating body and the liquid is injected and sealed in the wheel, the imbalance of the rotating body can be eliminated by the moment of inertia generated during rotation. In addition, since the rotating body is lightened and the moment of inertia can be reduced by the meat stealing holes and the recesses of the divided pieces, the rotational balance of the rotating body is improved and the rotational vibration can be reduced. In addition, the amount of resin used can be reduced. In this way, because it can be realized easily and at low cost, it is possible to reduce the cost, and it is possible to eliminate the need for providing unnecessary protrusions and to make the appearance of the rotating body uncomfortable compared to the case where the balance weight is attached to the outer surface of the rotating body. There is no.

Further, due to the play between the engaging portion and the engaged portion when mounting the wheel, the rotating body rotates together with the wheel at the time of starting rotation, so that the load on the drive source of the rotating body can be reduced. There is an excellent effect.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a rotary brush of a suction port body according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a rotary brush according to a first embodiment.

FIG. 3 is a perspective view of a rotary brush.

FIG. 4 is a perspective view of a suction port body.

FIG. 5 is an exploded perspective view of a rotating brush according to a second embodiment.

FIG. 6 is a perspective view of a rotating brush according to a third embodiment.

FIG. 7 is a partial cross-sectional view of the rotary brush.

FIG. 8 is a perspective view of a rotating brush according to a fourth embodiment.

FIG. 9 is a sectional view of the rotary brush.

FIG. 10 is a perspective view of a rotating brush according to a fifth embodiment.

11 is a sectional view taken along line AA of FIG.

12 is a sectional view taken along line BB of FIG.

FIG. 13 is an exploded perspective view of a rotating brush according to a sixth embodiment.

FIG. 14 is a partially cutaway front view of the rotary brush.

FIG. 15 is a sectional view taken along line CC of FIG.

FIG. 16 is a sectional view of an end portion of a rotating brush according to a seventh embodiment.

17 is a cross-sectional view taken along the line DD of FIG.

FIG. 18 is an exploded perspective view of a rotating brush according to an eighth embodiment.

FIG. 19 is a sectional view of the end of the rotary brush.

20 is a cross-sectional view taken along line EE of FIG.

FIG. 21 is an exploded perspective view of a rotating brush according to a ninth embodiment.

FIG. 22 is an exploded perspective view of a rotating brush according to a tenth embodiment.

FIG. 23 is a cross-sectional view of a suction port body of a conventional vacuum cleaner.

FIG. 24 is a vertical cross-sectional view of the suction port body.

FIG. 25 is a front view of a conventional rotating brush.

FIG. 26 is a sectional view of a rotary brush of the same.

FIG. 27 is a perspective view of another conventional rotating brush.

FIG. 28 is a sectional view of a rotary brush of the same.

FIG. 29 is a perspective view of another conventional rotating brush.

FIG. 30 is a sectional view of the rotary brush of the same.

FIG. 31 is an exploded perspective view of another conventional rotating brush.

FIG. 32 is a partially cutaway front view of the rotary brush.

33 is a sectional view taken along line FF of FIG. 32.

FIG. 34 is an exploded perspective view of another conventional rotating brush.

FIG. 35 is a sectional view of the end portion of the rotary brush.

36 is a sectional view taken along line GG of FIG. 35.

FIG. 37 is a sectional view of a conventional rotating body.

[Explanation of symbols]

 4 Suction port body 12 Support body 41 Rotating body 42 Cleaning body 43a, 43b Split piece 44 Joining means 47 Through hole 48 Screw hole 50 Screw 51 Rib 56 Attachment part 60 Balance weight 61 Wheel 64 Water 65 Meat stealing hole 66 Projection body 67 Wheel 68 Key groove 69 Key 71a, 71b Wheel 72a, 72b Pulley

Front Page Continuation (72) Inventor Kazuo Kame 22-22, Nagaike-cho, Abeno-ku, Osaka-shi, Osaka Within SHARP Co., Ltd. (72) Inventor Mitsuharu Ninomiya 22-22 Nagaike-cho, Abeno-ku, Osaka-shi, Osaka Prefecture

Claims (17)

[Claims] 1. A rotary body rotatably supported by a suction port body via a support body, and a cleaning body provided on an outer peripheral surface of the rotary body along an axial direction, the rotary body comprising: A rotary brush for a suction body, comprising a plurality of divided pieces that are divided along the axial direction, and the divided pieces are integrated into a cylindrical shape by a joining means. 2. The rotating brush of the suction port body according to claim 1, wherein a cleaning body is mounted between adjacent divided pieces. 3. The suction device according to claim 1, wherein the joining means inserts a screw into a through hole formed in the divided piece and a screw hole formed in the opposite divided piece to fix the screw. A rotating brush for the mouth. 4. The rotary brush for a suction mouth according to claim 1, wherein the joining means engages and adheres ribs formed on the inner surface of each divided piece. 5. The rotary brush of the suction port body according to claim 1, wherein the cleaning body is a protrusion integrally formed on the outer surface of the divided piece. 6. The rotating body is provided with a mounting portion for mounting the supporting body, and the mounting portion is integrally formed on one divided piece or divided to be integrally formed on each divided piece. The rotating brush of the suction port body according to 1. 7. The rotary brush of the suction port body according to claim 1, wherein the support body is integrally formed on one divided piece or divided to be integrally formed on each divided piece. 8. The rotating brush for a suction inlet according to claim 7, wherein the outer surface of the support is a driving force transmitting portion. 9. The rotary brush for a suction port body according to claim 1, wherein the divided piece is provided with a meat stealing hole or a recess. 10. The rotary brush for a suction port body according to claim 1, wherein a balance weight is attached to an inner surface of the rotary body. 11. The rotary brush of the suction port body according to claim 1, wherein a hollow wheel is provided at an end of the rotary body, and a liquid is injected and sealed in the wheel. Rotating brush. 12. The rotary brush of the suction port body according to claim 1, wherein a wheel is provided at an end of the rotary body, and an engaging portion for engaging the wheel is formed at an end of the split piece. A rotary brush of a suction port body, characterized in that an engaged portion to be engaged with the engaging portion is formed on the. 13. The rotary brush according to claim 12, wherein a play is provided in the circumferential direction between the engaged portion of the wheel and the engaging portion of the rotating body. A rotating brush for the mouth. 14. The rotary brush of the suction port body according to claim 1, wherein a wheel is provided at an end portion of the rotary body, and the wheel is integrally formed on one divided piece or divided and integrally formed on each divided piece. A rotating brush with a suction body that has been characterized. 15. The rotary brush for a suction inlet according to claim 14, wherein the wheel is made of a soft material different from the divided piece. 16. The rotary brush for a suction port body according to claim 1, wherein the split piece is formed by twisting in the axial direction. 17. The rotary brush for a suction inlet according to claim 1, wherein the divided pieces are formed by injection molding.