JPH0719586Y2 - Roller for painting - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating roller for coating a wall surface or the like while being impregnated with a coating material.

[0002]

2. Description of the Related Art A conventional coating roller of this type is disclosed in Japanese Utility Model Publication No. 55-32125. As shown in FIG. 4, this roller has a cylindrical body 1 in the center and a raised portion 2 formed on the peripheral surface thereof. The cylindrical body 1 serving as the core of the raised portion 2 has a hole portion 1a having a diameter slightly larger than the outer diameter of the roller support shaft 3a on the handle 3 side, and the hole portion 1
a stepped hole composed of a hole portion 1b having a diameter sufficiently larger than a,
In the large diameter hole portion 1b of the step difference hole, the roller support shaft 3a is axially press-fitted at a position near the step portion 4 of the both hole portions 1a and 1b so as to be radially expanded and deformed against the support shaft. A split cylinder body 5 that is tightly fitted to the outside of the large diameter hole 3a but is relatively rotatable with respect to the large diameter hole portion 1b is loosely fitted, and the split cylinder body 5 is attached to the opening end side of the large diameter hole portion 1b. A cylindrical cap 6 which is rotatable relative to the roller support shaft 3a and is positioned in the cylindrical body 1 is internally fitted and fixed.

However, by inserting the roller support shaft 3a of the handle 3 into the cylindrical body 1 of the roller having the above-described structure by press-fitting so as to push the split cylinder body 5 against elasticity. Since the split cylindrical body 5 is closely fixed to the roller support shaft 3a, the roller is rotatable with respect to the roller support shaft 3a, but is prevented from coming out of the roller support shaft 3a and is ready for use. By pulling out the roller support shaft 3a from the cylindrical body 1 against the frictional force of the split cylinder body 5, the roller can be detached from the roller support shaft 3a and the replacement work can be performed.

[0004]

By the way, in the conventional coating roller as described above, the cylindrical body 1 serving as the core of the raised portion 2 is used.
Is formed into a stepped hole composed of a small diameter hole portion 1a and a large diameter hole portion 1b, and therefore, it is the most efficient and economical molding method when the cylindrical body 1 is made of synthetic resin. Since the extrusion molding cannot be performed, the manufacturing cost of the mold is high, and the injection molding and the like must be relied upon, and moreover, the cylindrical body 1 is molded to a length corresponding to the total length of the roller to be manufactured (the total length of the raised portion 2).
Each roller must be manually manufactured by a method of forming a raised portion 2 by winding a pile fabric or the like for each roller. Especially, when manufacturing various rollers having different lengths, the conventional roller structure is used. However, there is a drawback that the manufacturing cost is very high.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a coating roller capable of significantly reducing the manufacturing cost.

[0006]

In the coating roller of the present invention, a cylindrical body is fitted and fixed to both ends of a core cylinder of the coating roller main body so that the cylindrical body is relatively rotatably fitted to a roller support shaft on the handle side. Then, at the intermediate position of the both end cylinders, the core cylinder is expanded and deformed against the elasticity by the axial press-fitting of the support shaft to be closely fitted and fixed to the support shaft. A split cylinder body that is relatively rotatable with respect to the cylinder, and a spacer cylinder body that is interposed between the split cylinder body and at least one end cylinder body and is relatively rotatable with respect to the support shaft, It is formed by fitting.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described with reference to FIGS. 1 to 3. FIG. 1 shows a roller type coating tool, which is a coating roller 11 according to the present invention and a roller operating tool. And the handle 12 of the
It is formed by bending a steel rod, and has a roller support shaft 13 that is detachably inserted in the coating roller 11 and rotatably supports the roller 11 at the tip end side, and the base end side has the roller support shaft 13. A handle 14 is attached and fixed in a direction orthogonal to the roller support shaft 13.

As shown in FIG. 2, the coating roller 11 is formed with a core tube 15 made of a paper tube or the like, and a base material 16 such as a synthetic resin net material on the outer peripheral surface of the core tube 15. It has a roller body 18 constituted by the raised brush portion 17. To form the roller body 18, a long paper tube is used, and a belt-shaped base material 16 holding the raised portion 17 is spirally wound and fixed to the outer peripheral surface of the paper tube by an automatic winding machine. As a result, an elongated roller body composed of the core tube 15 and the raised portion 17 is formed, and the roller body 18 can be obtained by cutting the elongated roller body into a predetermined length dimension.

Inside the core cylinder 15 of the roller body 18, a bottomed cylinder body 19 having an outer end integrally formed with a bottom portion 19a,
The spacer cylinder 22, the split cylinder 21, and the flanged cylinder 20 in which the flange 20a is integrally formed on the outer end are fitted in this order. Then, the bottomed tubular body 19,
In the spacer cylinder 22 and the flanged cylinder 20, the bottom 19 a of the bottomed cylinder 19 is located at the outer end of the core cylinder 15, and the flange 20 a of the flanged cylinder 20 is the core cylinder 1.
Each of them is internally fitted and fixed in the core tube 15 so as to come into contact with the inner end surface of the roller 5, and the inner diameter thereof is slightly larger than the outer shape of the roller support shaft 13 and is rotatable relative to the roller support shaft 13.

The bottomed cylinder 19 and the flanged cylinder 2
Numerals 0 are fixed-size cylinders each formed to have a constant length regardless of the length of the roller, and are formed by injection molding of synthetic resin, for example. The outer diameter of each of the tubular bodies 19 and 20 is formed to be substantially the same as the inner diameter of the core barrel 15, and the core barrel 15 is forcibly press-fitted into the core barrel 15 with respect to the core barrel 15. It can be fixed non-rotatably, but an adhesive may be used together, or it may be fixed to the core tube 15 only by the adhesive force of the adhesive.

The split cylinder 21 is also made of synthetic resin,
As shown in FIGS. 2 and 3, a slit 21a is formed on one side along the entire length in the axial direction.
Has an inner diameter smaller than the outer diameter of the roller support shaft 13. However, when the support shaft 13 is press-fitted into the split cylinder body 21, the split cylinder body 21 expands in diameter against the elasticity of itself and is externally fitted and fixed to the support shaft 13. The diameter is smaller than the inner diameter of the core cylinder 15, and the core cylinder 15 is rotatable relative to the core cylinder 15. The split cylinder body 21 is also a fixed-size cylinder body, like the cylinder bodies 19 and 20.

The spacer cylinder 22 interposed between the bottomed cylinder 19 and the split cylinder 21 has an inner diameter larger than the outer diameter of the roller support shaft 13 and an outer diameter by extrusion molding of a synthetic resin. Is a long cylindrical body formed almost the same as the inner diameter of the core tube 15, and has a required length, that is, the split cylindrical body 2
1 and the bottomed tubular body 19 are cut according to the distance between them, and the core tube 1 is formed by press fitting (or by using an adhesive).
It is fixed in 5. The split cylinder body 21 may have an outer diameter smaller than the inner diameter of the core cylinder 15 so as to be rotatable relative to the core cylinder 15.

In the coating roller 11 of the present invention constructed as described above, the split cylinder body 21 is rotatably positioned in the axially fixed position in the core cylinder 15. Then, in use, the roller support shaft 13 on the handle 12 side is inserted into the core tube 15 from the flanged tubular body 20 side. At this time, the split tubular body 21 resists its elasticity and rolls. The roller support shaft 13 is pushed into the split cylinder body 21 while being pushed out by the support shaft 13 to be penetrated. By thus inserting the roller support shaft 13 over the entire area of the core cylinder 15, the split cylinder body 21 is moved to the core cylinder 15.
It is fixed in close contact with the roller support shaft 13 while maintaining a fixed position in the inside in the axial direction. The split cylindrical body 21 has a tapered guide surface 21b formed on the end surface on the flanged cylindrical body 20 side, so that the roller support shaft 13 can be easily inserted.

In the coating roller 11 assembled to the handle 12 as described above, the cylinder bodies 19 and 20 fitted and fixed to both ends of the core cylinder 15 and the spacer cylinder body 22 are formed by the roller support shaft 13. Since it is rotatable relative to the roller support shaft, the roller support shaft can be freely rotated, and the roller support shaft 13 can be in close contact with the roller support shaft 13 by the split tube body 21 that is rotatable relative to the core tube 15. It is held at a fixed position in the axial direction of 13 and is prevented from accidentally coming out of the roller support shaft 13.

The coating roller 11 is attached to the handle 1
To remove from the roller 2, the roller 11 is held by hand and pulled strongly in the direction of pulling it out of the roller support shaft 13 of the handle 12, and the pulling force of the roller support shaft 13 causes the split cylinder 21 and the roller support shaft 13 to move. When the frictional force between
The roller 11 can be removed from the roller support shaft 13.

In the above embodiment, the bottomed tubular body 19 and the flanged tubular body 20 are used as the two tubular bodies which are internally fitted and fixed to both ends of the core tube 15 forming the roller body 18. Also, a straight tubular body may be used. Further, in the above embodiment, the spacer cylinder 22 is interposed between the bottomed cylinder 19 and the split cylinder 21 which are the cylinders on the one end side, but the flanged cylinder which is the cylinder on the other end side. Body cylinder 20 and split cylinder 2
1 and the split cylinder 2
It is also possible to interpose on both sides of 1.

[0017]

The coating roller of the present invention has a roller support shaft for preventing the roller from slipping off from the roller support shaft when the roller support shaft on the handle side is rotatably fitted. A split cylinder that is elastically and closely fixed,
A pair of cylinders fitted and fixed inside both ends of the core cylinder of the roller body, and a spacer cylinder that is internally fitted in the core cylinder between at least one cylinder and the split cylinder. Since the roller body is held rotatably at a fixed position in the axial direction, the core cylinder has a special cross-sectional shape having a stepped hole formed integrally with the spacer cylinder and the cylinder on one end side. It is not necessary to configure the above, and it is possible to use a straight tubular body such as a paper tube that is cut to a predetermined length. Further, at least for the spacer cylinder, a straight tubular cylinder made of synthetic resin cut into a predetermined length can be used.

Therefore, according to the structure of the present invention, only the three parts of the split cylinder and the pair of cylinders which are internally fitted and fixed to both ends of the core cylinder are provided.
It is manufactured as a common part that can be used regardless of the roller length, and since the core cylinder and spacer cylinder can be used by cutting a straight tubular cylinder according to the roller length, it can be used. Although the number of parts is increased, various coating rollers having different lengths can be constructed at a very low cost.

In particular, as explained in the embodiment,
Using a straight tubular paper tube as the core tube, a long roller body manufactured by mechanically winding the raised material is cut into a predetermined length. Since it is possible to configure the main body easily, easily and inexpensively, by using such a manufacturing method together,
It is possible to significantly reduce the manufacturing cost of various coating rollers having different lengths.

[Brief description of drawings]

FIG. 1 is a perspective view of a roller type coating tool including a coating roller of the present invention.

FIG. 2 is a vertical sectional view of a coating roller.

FIG. 3 is an exploded perspective view showing an end cylinder, a split cylinder and a spacer cylinder of a coating roller, and a roller support shaft of a handle.

FIG. 4 is a vertical sectional view showing a conventional coating roller.

[Explanation of symbols]

 11 Coating Roller 12 Handle 13 Handle Roller Spindle 15 Core Tube 17 Brushed Part 18 Roller Main Body 19 Bottomed Tube (End Tube) 20 Flange Tube (End Tube) 21 Split Tube 22 Spacer Cylinder

Claims (1)

[Scope of utility model registration request] Claims: 1. A cylindrical body, which is externally fitted relative to a roller support shaft on the handle side, is internally fitted and fixed to both ends of a core cylinder of a coating roller main body, and the cylindrical body at both ends is located at an intermediate position. In the core tube, the split cylinder body is expanded and deformed against the elasticity by the press-fitting of the support shaft in the axial direction to be closely fitted and fixed to the support shaft, but is relatively rotatable with respect to the core cylinder. And a spacer cylinder body that is interposed between the split cylinder body and at least one end cylinder body and is rotatable relative to the support shaft.