JPS638382Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rotary tube for a dust removal roller, and more specifically, the present invention relates to a rotary cylinder for a dust removal roller, and more specifically, the rotary cylinder for a dust removal roller has an improved structure in which a dust removal roller, which is made by wrapping an adhesive sheet in multiple layers in a cylindrical shape, is fitted. It is related to.

2. Description of the Related Art Conventionally, a dust removal roller is known in which a pressure-sensitive adhesive sheet is wound into a cylinder shape and this is rotatably attached to a handle via a rotating cylinder.

Conventional rotary cylinders of this type of dust removal roller have a structure in which the rotary cylinder is integrally formed with a cylindrical part having a plurality of protrusions at both ends thereof to elastically support the dust removal roller.

However, in order to integrally mold a rotary cylinder with multiple protrusions and a complicated bearing between it and the handle side, a mold with a complicated structure is used, and multiple cores are required. It is extremely expensive because it requires a mold with Even though the mold is complicated and expensive, the dimensional accuracy of the rotating cylinder as a molded product is poor.
Many post-processes such as deburring work are required,
It has become extremely uneconomical due to high production costs.

The present invention was made in order to eliminate the above-mentioned drawbacks of the conventional technology.The rotating cylinder is divided into two parts, formed separately, and then fitted together to form a single body. The object of the invention is to provide a rotary cylinder for a dust removal roller that can significantly reduce costs by simplifying the mold structure and omitting post-processing.

Hereinafter, the present invention will be explained in detail based on embodiments shown in the drawings.

In the figure, the reference numeral 1 denotes a dust removal roller, in which an adhesive sheet 3 is wound in multiple layers around a cylindrical core material 2. Since a release agent is applied to the back surface of the adhesive sheet 3, the upper and lower sheets can be easily separated.

The edges of the adhesive sheet 3 and the core material 2 are both cut out in a V-shape as shown in FIG. The kerf 5 is continuously formed all the way to the end.

However, this cut groove 5 is formed only on the adhesive sheet 3.

Therefore, the user can insert his fingertips into the notches 4 and peel off the adhesive sheets 3 one by one.

On the other hand, what is designated by the reference numeral 6 is a handle, the base end of which is provided with a grip 7, and the distal end of which is a straight section that is perpendicular to the axial direction of the handle 6 via a curved section 8 that curves outward. Consecutive 9. A rotary cylinder 10 is attached to this straight portion 9 as shown in FIG.

As shown in an enlarged view in FIG. 4, the straight portion 9 has annular grooves 9a and 9b formed at its inner end and tip.

A C clip 11 is fitted into the groove 9a located on the inside, and while in contact with the C clip 11, a washer 12 is fitted into the straight part 9 on the tip side of the straight part 9, and a spring 13 and a washer are fitted into the straight part 9 in contact with the C clip 11. 14 is fitted to the straight portion 9.

On the other hand, after the rotary cylinder 10 is fitted between the grooves 9a and 9b and the washer 15 is fitted, a C clip 16 is fitted into the outer groove 9b. This state is shown in FIGS. 5 and 9.

By the way, the rotary cylinder 10 has a half body 1 shown in FIG.
7 and a half body 18 shown in FIG. 12, and by fitting these together and integrating them as shown in FIG. 10, the cylindrical rotary cylinder 10 is completed.

One half 17 has a cylindrical portion 17a, as shown enlarged in FIG. 9 and FIG. is formed.

On the other hand, on the outer end side of the cylindrical portion 17a, a plurality of protrusions 17c are integrally formed from the end edge and curve slightly outward in the diametrical direction toward the tip. Projected at intervals. Each of these projecting pieces 17c is parallel to the axial direction of the rotating shaft 10,
A protrusion 17d is provided on the tip end thereof to protrude outward, and a reinforcing rib 17e is provided on the inner side along the axial direction.
is formed.

As shown in FIGS. 7, 9, and 10, a cylindrical portion 17 is provided at the center of the cylindrical portion 17a concentrically therewith.
f is formed, and this cylindrical portion 17f is connected to the cylindrical portion 17a via radially arranged ribs 17g as shown in FIG. Cylindrical part 17
There is a partition wall 17h in the center in the axial direction of f, and a through hole 17i through which the straight portion 9 passes through the partition wall 17h.
is formed.

The distance from the side surface of the partition wall 17h on the projecting piece 17d side to the side edge of the cylindrical portion in the same direction is shorter than the free length of the spring 13, and the inner diameter of the cylindrical portion 17f is slightly smaller than the diameter of the washers 12 and 14. big.

Further, an end plate 17j is formed on the inner circumferential surface at a position retracted a predetermined distance from the inner end side of the cylindrical portion 17a, and continues to the inner end of the cylindrical portion 17a. Arc-shaped openings 17k, 17k are formed in this end plate 17j at opposing positions on the same circumference.

The other half 18 forming the rotary cylinder 10 is also
As shown in the enlarged view in FIG. 1 and FIG.
It is formed in a symmetrical position.

Further, the protruding piece 17 is provided at the outer end of the cylindrical portion 18a.
Projecting pieces 18c are provided in a protruding manner in left-right symmetry with c, and reinforcing ribs 18d are provided on the inner circumferential surface of each projecting piece 18c in a protruding manner along the axial direction.

The reinforcing rib 18d slightly protrudes toward the distal end beyond the protruding piece 18c.

Further, as shown in FIG. 9, in the center of the cylindrical portion 18a, a conical cylindrical body 18e whose diameter becomes smaller as it reaches the outer end of the cylindrical portion 18a is located concentrically therewith. A handle 6 is attached to the small diameter portion of the cylinder 18e.
An inner hole having the same diameter as the straight portion 9 is bored. The cylindrical body 18e and the cylindrical portion 18a are connected to each other by ribs 18f arranged radially, as shown in FIG.

Further, the inner end of the cylindrical portion 18a is closed by an end plate 18g, and this end plate 18g has a ninth
As shown in FIG. 12 and FIG.
Hook 1 on the outer surface at the position corresponding to 17k.
An arcuate protrusion 18i in which 8h is formed is provided in a protruding manner.

An arcuate opening 18l is formed along the protrusion 18i on the outside of the base of the arcuate protrusion 18i. These openings 18l are formed for passing the core of the mold for forming the hook 18h, but by forming these openings, the protrusion 18i has an elasticity greater than that of the material. This makes it easier to fit into the opening 17k on the half body 17 side.

Therefore, one set of halves 1 constituting the rotating cylinder 10
If the inner ends of 7 and 18 face each other and the protrusion 18i is fitted into the opening 17k, the hook 18h will cross over the edge of the opening 17k and hook, and the two will be connected without separating. Ru.

The rotary cylinder 10 integrated as described above is fitted into the straight portion 9 of the handle 6 with the projecting piece 17c side at the top. That is, first, the C clip 11 is fitted into the groove 9a of the straight portion 9, and the washer 12, spring 13, and washer 14 are sequentially fitted in contact therewith, and then the rotary cylinder 10 is inserted with the protrusion 17c side first. , the straight part 9 is fitted into the through hole 17i of the cylindrical part 17f of the cylindrical part 17a, and further fitted into the cylindrical body 18e of the cylindrical part 18a, and with the spring 13 bent, the washer 15 is fitted into the tip side of the straight portion 9 in contact with the edge of the cylindrical body 18e, and the C clip 16 is fitted into the groove 9b to prevent it from coming off.
The rotary cylinder 10 is fitted onto the straight part 9.

After attaching the rotary tube 10 as described above, the core material 2 of the dust removal roller 1 is attached to the protrusion 18 of the rotary tube 10.
Fit from the c side. Then, the protrusions 17b, 18
b is fitted while biting into the core material 2 formed from cardboard or the like until it comes into contact with the protrusion 17d of the protruding piece 17c. When the dust removal roller 1 is installed, the protrusions 17c and 18c, which are slightly warped toward the outside in the diametrical direction of the rotary tube, are elastically deformed toward the inside, so that the restoring force is applied to the inner circumferential surface of the core material 2. In addition, the fitted state between the rotary cylinder 10 and the dust removal roller 1 can be maintained more firmly.
In this state, when the handle 6 is gripped and the dust removal roller 1 is rotated while being pressed against clothing etc., the washer 14 is pressed against the side surface of the partition wall 17h of the cylindrical portion 17f due to the elastic force of the compressed spring 13. Since a large frictional force acts on this part, a braking force acts between the rotary cylinder 10 and the straight part 9, and the dust removal roller 1, which is firmly fitted in the rotary cylinder 10, is pressed against clothing etc. and moves back and forth. Unless pressed, the rotary cylinder 10, and therefore the dust removal roller 1 integrally fitted therein, will not idle.

As is clear from the above description, according to the present invention, the rotary cylinder 10 on which the dust removal roller 1 is mounted is constituted by a pair of left and right halves 17 and 18, and in order to integrate the two halves, complementary Because it has a structure in which a fitting part is formed, each half body 17,
18 can be separately molded, a complicated mold structure is not required, and the rotary cylinder 10 can be obtained at low cost and with high precision. The protrusions 17c and 18c formed to protrude outward on both sides of the rotary cylinder have their tips curved toward the outside of the rotary cylinder.
The dust removal roller 1 can be firmly attached to the rotating tube.

[Brief explanation of drawings]

The figure is for explaining one embodiment of the present invention.
The figure is a perspective view of the dust removal roller, Figure 2 is a side view of the handle with the rotating tube attached, Figure 3 is a partially enlarged plan view of the handle with the rotating tube attached, and Figure 4 is the straight line of the handle. Figure 5 is a perspective view of the linear part of the handle with these parts attached, and Figure 6 is a perspective view of the handle with the dust removal roller attached. A partially enlarged plan view of the handle.
Fig. 7 is an enlarged cross-sectional view taken along the line A-A in Fig. 6, Fig. 8 is a side view of the straight part of the handle with the dust removal roller attached, and Fig. 9 is an enlarged cross-sectional view taken along the line B-B in Fig. 8. , FIG. 10 is a perspective view of the rotary cylinder, and FIGS. 11 and 12 are perspective views of the left and right halves forming the rotary cylinder. DESCRIPTION OF SYMBOLS 1... Dust removal roller, 2... Core material, 3... Adhesive sheet, 6... Handle, 9... Straight line part, 10
...Rotating tube, 12, 14, 15... Washer, 1
1, 16...C clip, 13...spring,
17, 18... Half body, 17a, 18a... Cylindrical part, 17c, 18c... Protruding piece, 17f... Cylindrical part, 17h... Partition wall, 17k... Opening, 1
7j, 18g...End plate, 18h...Hook, 18
i...protrusion.

Claims (1)

[Scope of utility model registration request] It is rotatably supported by a straight portion 9 formed perpendicular to the axial direction of the handle 6, and a pair of cylindrical halves 17 and 18 are butt-fitted to form an integral rotating cylinder 10. In the rotary cylinder of the dust removal roller, which is constructed by fitting a roller on which an adhesive sheet can be wound around the outer periphery of the rotary cylinder 10, the edge of the abutting surface of one of the halves 17 and 18 is The plate 17j has a pair of arc-shaped openings 17k, 17k facing each other.
is formed, and protrusions 17b are formed at equal intervals in the circumferential direction on the outer peripheral edge of the half body 17 on the opposite side to the abutting surface.
The outer edge is curved slightly diametrically outward at equal angular intervals in the circumferential direction, and the tip thereof has protrusions extending outward at right angles. A plurality of elongated protrusions 17c are formed with projecting portions 17d, and an end plate 18g of the abutting surface of the other half 18 is fitted into the openings 17k, 17k of the half 17. A pair of arc-shaped protrusions 18i, 18i are provided protrudingly,
Hooks 18h, 18h are formed over the entire length on the outer peripheral surface of the tips of these protrusions 18i, and protrusions 18b are formed at equal intervals in the circumferential direction on the outer peripheral edge of the half body 18 on the opposite side to the abutting surface. At the same time, a plurality of elongated protrusions 18c are protruded from the outer end at equal angular intervals in the circumferential direction and curve slightly outward in the diametrical direction toward the tip. A cylindrical portion 17f is located concentrically with the cylindrical portion 17a of the half body 17, and a partition wall 17h is provided at the center thereof with a through hole 17i formed therethrough through which the straight portion 9 passes. The cylindrical portion 17f and the cylindrical portion 17a are connected by a plurality of radially arranged reinforcing ribs 17g and an end plate 17j. A hollow conical cylinder 18e formed toward the outer end of the half body 18 and a cylindrical portion 1 of the half body 18.
8a is integrally formed with a plurality of reinforcing ribs 18d arranged radially.