Painting rollers and painting methods

Abstract

To coat both a flat to-be coated surface and a curved to-be coated surface such that occurrence of an uneven amount of a coating is prevented while a sufficient amount of coating is held.SOLUTION: A coating roller 10 according to the present disclosure includes: a grip member 11 that can be gripped; a shaft support member 12 that has a pair of arms 17a, 17b extending in a direction away from each other from a side of the grip member 11 and is supported by the grip member 11; a coil spring 13 that is elastic for allowing pull and push and is supported by the shaft support member 12 by its being stretched between the pair of arms 17a, 17b of the shaft support member 12; a plurality of rolls 14 rotatably supported by the coil spring 13 and arranged in a line in an axial direction of the coil spring 13; and a pair of E-shaped stopper rings 23a, 23b capable of adjusting pull and push of an area of the coil spring 13, which area is inserted from one end of the plurality of rolls 14, on one side in the axial direction, to the other end on the other side.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] [[ID=⑤]]The present disclosure relates to a painting roller and a painting method. [[ID=⑥]] [[ID=⑦]]

Background Art

[0002] [[ID=⑪]] [ [[ID=⑫]]Patent Document 1 describes a painting roller for pipes. In this painting roller for pipes, coil springs are passed through the central holes of five application rolls and connected in series, and both ends of the coil springs are hooked on the hooks of the frame rods and strongly stretched. The application rolls are stopped by washers so as not to move left and right. [[ID=⑬]] [[ID=⑭]]

[0003] [[ID=⑮]] [[ID=⑯]]Patent Document 2 describes a painting roller. The painting roller includes a handle grasped by an operator, a pair of shaft receivers provided at the end of the handle, a coil spring as a support shaft stretched between the tip ends of these shaft receivers, and three, six, or other numbers of roller bodies rotatably supported by being inserted through the coil spring. Both side surfaces of each cylindrical roller body are inclined and cut out from near the through hole in the central portion toward the outer peripheral portion to form a frustum of a cone shape, and a space portion is formed between adjacent roller bodies. [[ID=⑰]] [[ID=⑱]]

Prior Art Documents

Patent Documents

[0004] [[ID=㉕]] [[ID=㉖]] [[ID=㉗]]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] [[ID=㊷]] Incidentally, when painting large buildings or structures, using a standard-sized paint roller requires a lot of time and effort, so widening the roller's width (axial length) is a possible solution. However, if the number of rolls in the paint roller described in Patent Documents 1 and 2 is increased to widen the roller, the central part in the width direction of the roller tends to sag due to the weight of the paint and its own weight, potentially resulting in uneven application when painting flat surfaces. Furthermore, widening the roller makes it difficult to evenly distribute force across the entire roller when painting curved surfaces, potentially causing the outer rolls in the width direction to lift away from the painted surface, resulting in uneven application. Uneven application can lead to defects in paint film performance and poor appearance, necessitating repainting, which can result in wasted paint and time.

[0006] Therefore, this disclosure aims to provide a paint roller capable of applying paint to both flat and curved painted surfaces while maintaining a sufficient amount of paint and suppressing unevenness in the application, and to present a painting method using a paint roller. [Means for solving the problem]

[0007] To solve the above problems, a painting roller according to a first aspect of the present invention comprises: a gripping member that can be gripped; a shaft support member having a pair of arms extending in a direction away from each other from the gripping member side and supported by the gripping member; a support shaft having expandable and retractable elasticity and stretched between the pair of arms of the shaft support member and supported by the shaft support member; a plurality of rolls rotatably supported on the support shaft and arranged in the axial direction of the support shaft; and an expansion and contraction adjustment means capable of adjusting the expansion and contraction of a region of the support shaft through which the plurality of rolls are inserted from one end on one side to the other end on the other side in the axial direction.

[0008] A second aspect of the present invention is a painting roller according to the first aspect, wherein the extension and retraction adjustment means comprises a one-side stopper positioned on one side of the plurality of rolls and fixed to the support shaft, or detachably attached to restrict the movement of the plurality of rolls toward the one side, and a other-side stopper positioned on the other side of the plurality of rolls and detachably attached to the support shaft to restrict the movement of the plurality of rolls toward the other side.

[0009] A third aspect of the present invention is a painting roller according to the second aspect, wherein the one-side stopper and the other-side stopper are E-type retaining rings.

[0010] A fourth aspect of the present invention is a painting roller according to any of the first to third aspects, wherein the gripping member extends in a predetermined direction intersecting the axial direction, and the shaft support member is tiltably supported on the gripping member with respect to an axis extending in a direction intersecting both the axial direction and the predetermined direction.

[0011] A fifth aspect of the present invention is a painting roller according to any of the first to fourth aspects, wherein the support shaft is a coil spring.

[0012] A sixth aspect of the present invention is a painting roller according to the fifth aspect, wherein the load applied to the coil spring stretched between the pair of arms is 1.0 kg or more and 4.0 kg or less.

[0013] A seventh aspect of the present invention is a painting method using a painting roller comprising: a pair of arms; a support shaft having retractable elasticity and stretched between the pair of arms; a plurality of rolls rotatably supported on the support shaft and arranged in the axial direction of the support shaft; and an extension adjustment means capable of adjusting the extension of a region of the support shaft through which the plurality of rolls are inserted from one end to the other in the axial direction, wherein the extension of the region of the support shaft is adjusted by the extension adjustment means according to the painting surface to be painted, thereby adjusting the load on the region of the support shaft. [Effects of the Invention]

[0014] According to the present disclosure, it is possible to paint both a flat painted surface and a curved painted surface while maintaining a sufficient coating amount and suppressing the occurrence of uneven coating amount.

Brief Description of the Drawings

[0015] [Figure 1] It is a plan view of a painting roller according to an embodiment of the present invention. [Figure 2] It is a cross-sectional view of a plurality of rolls of the painting roller of FIG. 1. [Figure 3] It is an enlarged view of part III of FIG. 2. [Figure 4] It is a plan view of an E-shaped retaining ring. [Figure 5] It is a schematic explanatory diagram regarding the expansion and contraction adjustment of a coil spring, where (a) shows the extended state and (b) shows the contracted state, respectively. [Figure 6] It is an explanatory diagram regarding the painting of a curved painted surface, where (a) shows the state of painting a painted surface with a large radius of curvature and (b) shows the state of painting a painted surface with a small radius of curvature, respectively. [Figure 7] It is an explanatory diagram regarding the painting of a curved painted surface in a place with a narrow space. [Figure 8] It is a comparison diagram of the painting width for a curved painted surface, where (a) shows the painting width when using the painting roller according to an embodiment of the present invention, (b) shows the painting width when using a general cushion roller, and (c) shows the painting width when using a general regular roller, respectively. [Figure 9] It is an explanatory diagram showing a state where the coil spring is too soft and the roll is in contact with the arm portion. [Figure 10] It is an explanatory diagram showing a state where the coil spring is too hard and the outer end portion in the width direction of the roll is not in close contact with the painted surface. <0OO0086>

Mode for Carrying Out the Invention

[0016] Hereinafter, an embodiment of the present invention will be described based on the drawings.

[0017] FIG. 1 is a plan view of a painting roller 10 according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of a plurality of rolls of the painting roller 10 in FIG. 1. FIG. 3 is an enlarged view of a portion III in FIG. 2. FIG. 4 is a plan view of an E-shaped retaining ring. FIG. 5 is a schematic explanatory view of the expansion and contraction adjustment of a coil spring, where (a) shows the extended state and (b) shows the contracted state. FIG. 6 is an explanatory view of painting a curved painting surface 1a, 1b, where (a) shows the state of painting a painting surface 1a with a large radius of curvature and (b) shows the state of painting a painting surface 1b with a small radius of curvature. FIG. 7 is an explanatory view of painting a curved painting surface 1c in a narrow space.

[0018] As shown in FIGS. 1 and 2, a painting roller 10 according to an embodiment of the present invention is a painting roller 10 that can paint not only a planar painting surface but also a curved painting surface, and includes a grippable gripping member 11, a shaft support member 12 supported by the gripping member 11, a coil spring (support shaft) 13 supported by the shaft support member 12, a plurality of rolls 14 rotatably supported by the coil spring 13, and a pair of E-shaped retaining rings (expansion and contraction adjustment means) 23a, 23b detachably attached to the coil spring 13.

[0019] In the description of this specification, unless otherwise specified, the direction of the painting roller 10 refers to the direction in a state where the gripping member 11 is orthogonal to the support shaft (the coil spring 13 in this embodiment) (the state shown in FIGS. 1 and 2). Also, the front-rear direction means the direction in which the gripping member 11 extends, with the plurality of rolls 14 side being the front and the gripping member 11 side being the rear. Further, the left-right direction is the direction in which the support shaft (the coil spring 13 in this embodiment) extends (axial direction), and means the left-right direction in a state facing the front of the painting roller 10. The up-down direction means the direction intersecting both the front-rear direction and the left-right direction. In each figure, FR indicates the front of the painting roller 10, and L indicates the left side of the painting roller 10.

[0020] The gripping member 11 is a member used for gripping during painting work and extends in the front-rear direction (a predetermined direction). In this embodiment, the gripping member 11 is formed in the shape of a rod that extends linearly in the front-rear direction. One end (rear end) of the gripping member 11 is provided with a gripping portion 11a that is formed to be large in diameter for easy gripping. The other end 11b (front end 11b) of the gripping member 11 supports the shaft support member 12. In this embodiment, the front end 11b of the gripping member 11 supports the shaft support member 12 so that it can tilt.

[0021] The shaft support member 12 is a member that supports the coil spring 13 and has a pair of arms 17a and 17b that extend in a direction away from each other from the gripping member 11 side. In this embodiment, the shaft support member 12 is composed of a pair of arms 17a and 17b. The pair of arms 17a and 17b extend forward from the front end 11b of the gripping member 11 so as to be spaced apart from each other to the left and right. The shaft support member 12 has a base end 16 that is tiltably supported on the front end 11b of the gripping member 11 with respect to an axis that extends in the vertical direction, a pair of arms 17a and 17b that extend in a direction away from each other from the base end 16, and a shaft support portion 18 provided at the tips of the pair of arms 17a and 17b. That is, the shaft support member 12 is tiltably supported on the gripping member 11 with respect to an axis that extends in the vertical direction. The angle of the shaft support member 12 relative to the gripping member 11 is adjustable and maintained by an angle adjustment member 15 (a bolt and nut in this embodiment). The base end 16 of the shaft support member 12 and the front end 11b of the gripping member 11 are fastened and fixed together by a bolt 15 extending in the vertical direction, and the angle of the shaft support member 12 relative to the gripping member 11 can be adjusted by loosening the bolt 15. The shaft support portions 18 of the pair of arms 17a and 17b of the shaft support member 12 are formed to be able to lock both ends of a coil spring 13. The distance between the shaft support portions 18 of the pair of arms 17a and 17b (distance in the left-right direction) is set to be longer than the left-right length of the multiple rolls 14 when they are lined up close together in the left-right direction. In this embodiment, the shaft support member 12 is composed of a pair of arms 17a and 17b, and the pair of arms 17a and 17b are directly supported by the front end 11b of the gripping member 11, but the embodiment is not limited to this. For example, the shaft support member 12 may be configured in a Y-shape with a pair of arms 17a and 17b and a single shaft extending from the base ends of the pair of arms 17a and 17b and supported by the front end 11b of the gripping member 11, and the pair of arms 17a and 17b may be indirectly supported by the front end 11b of the gripping member 11 via the single shaft.

[0022] The coil spring 13 is a support shaft that rotatably supports multiple rolls 14 and extends in a direction intersecting the gripping member 11 (left-right direction). The coil spring 13 is a tensile coil spring with expandable and contractible elasticity. The natural length of the coil spring 13 is shorter than the distance between the shaft support portions 18 of the pair of arms 17a and 17b of the shaft support member 12. Both ends of the coil spring 13 are supported by being locked to the shaft support portions 18 of the pair of arms 17a and 17b of the shaft support member 12, respectively. That is, the coil spring 13 is stretched between the shaft support portions 18 of the pair of arms 17a and 17b of the shaft support member 12 in a state stretched beyond its natural length (a state in which a biasing force in the contracting direction is generated). The distance between the shaft support portions 18 of the pair of arms 17a and 17b of the shaft support member 12 is preferably 200 mm to 500 mm, more preferably 350 mm to 500 mm, and the load applied to the coil spring 13 stretched between the shaft support portions 18 is preferably 1.0 kg to 4.0 kg, more preferably 2.0 kg to 3.5 kg.

[0023] As shown in Figures 1 to 3, the multiple (10 in this embodiment) rolls 14 are cylindrical members capable of holding paint and applying paint to the painted surface, and are rotatably supported by a coil spring 13. The multiple rolls 14 are arranged in the axial direction (left-right direction) of the coil spring (support shaft) 13 and function as a single roller 27. The width of the roller 27 in this embodiment is longer than the width of a typical cushion roller (see Figure 8(b)) or regular roller (see Figure 8(c)) (for example, 18 cm), and is set to, for example, 34 cm (see Figure 8(a)). Note that the number of multiple rolls 14 is not limited to 10. Also, since each of the multiple rolls 14 has a similar configuration, one roll 14 will be described, and the descriptions of the other rolls 14 will be omitted.

[0024] The roll 14 has a cylindrical roll core 19 extending along the axial direction of the coil spring 13, and a paint holding portion 20 fixedly provided on the outer circumferential surface of the roll core 19. The roll core 19 is formed by fixing the bottom plates 21 of two bottomed cylindrical members 19a and 19b of the same diameter together. An axial insertion hole 22, sized to allow the insertion of the coil spring 13, is formed in the center of the bottom plates 21 of the two bottomed cylindrical members 19a and 19b. The coil spring 13 is inserted through the axial insertion hole 22 of the roll core 19. The surface of the paint holding portion 20 is made of bristles. The width (axial length) of the roll 14 is preferably 20 mm or more and 50 mm or less.

[0025] As shown in Figures 2 to 5, the E-shaped retaining rings 23a and 23b are attached to the coil spring 13 to restrict the left-right movement of the multiple rolls 14 relative to the coil spring 13. When attached to the coil spring 13, the E-shaped retaining rings 23a and 23b restrict the relative axial movement of the coil spring 13. The E-shaped retaining rings 23a and 23b are formed in a substantially E shape, having a C-shaped ring body 24 and three protrusions 25 that project radially inward from both ends and the circumferential center of the ring body 24 (see Figure 4). In this embodiment, the left-side (axial side) E-shaped retaining ring (one-side stopper, extension / retraction adjustment means) 23a is positioned to the left of the leftmost roll 14 among the multiple rolls 14, and is detachably attached to the coil spring 13 to restrict the leftward movement of the multiple rolls 14 to the E-shaped retaining ring 23a. Furthermore, the E-shaped retaining ring (other-side stopper, extension / retraction adjustment means) 23b on the right side (the other side in the axial direction) is positioned to the right of the rightmost roll 14 among the multiple rolls 14, and is detachably attached to the coil spring 13 to restrict the movement of the multiple rolls 14 to the right to the E-shaped retaining ring 23b. In other words, the E-shaped retaining rings 23a and 23b are positioned within the coil spring 13 to sandwich the multiple rolls 14 (rollers 27) from both sides (on both the left and right sides of the multiple rolls 14).

[0026] The E-shaped retaining rings 23a and 23b function as stretching and contracting adjustment means that can adjust the stretching and contracting (tension) of the roll insertion region (region) 26 (indicated by reference numeral 26 in Figure 5) of the coil spring 13, which is inserted from one end on the left side (one side in the axial direction) to the other end on the right side (the other side in the axial direction) of the multiple rolls 14. For example, if you want to stretch the roll insertion region 26 of the coil spring 13 to a taut state, remove the right-side E-shaped retaining ring 23b (or the left-side E-shaped retaining ring 23a) from the coil spring 13, pull the coil spring 13 to the right to stretch it, and while the coil spring 13 is stretched, attach the right-side E-shaped retaining ring 23b to the right side of the multiple rolls 14 of the coil spring 13 (see Figure 5(a)). Furthermore, if you want to loosen the roll insertion area 26 of the coil spring 13, remove the right E-type retaining ring 23b (or the left E-type retaining ring 23a), loosen (compress) the coil spring 13 to the desired tension, and then, while it is in that state, attach the right E-type retaining ring 23b to the right side of one of the rolls 14 of the coil spring 13 (see Figure 5(b)). The position where the E-type retaining rings 23a and 23b are attached is not particularly limited, but it is preferable to attach them at a position 1.0 cm to 3.5 cm from the shaft support portion 18.

[0027] A painting method according to one embodiment of the present invention is a painting method using a painting roller 10 comprising a pair of arms 17a, 17b, a coil spring 13 having expandable and retractable elasticity and stretched between the pair of arms 17a, 17b, a plurality of rolls 14 rotatably supported by the coil spring 13 and arranged in the axial direction of the coil spring 13, and E-type retaining rings 23a, 23b that can adjust the expansion and contraction of a roll insertion region 26 through which the plurality of rolls 14 are inserted from one end to the other in the axial direction of the coil spring 13, wherein the expansion and contraction of the roll insertion region 26 of the coil spring 13 is adjusted by the E-type retaining rings 23a, 23b according to the painting surface to be painted, and the load applied to the roll insertion region 26 is adjusted.

[0028] In the painting roller 10 configured as described above, a coil spring 13 with expandable and retractable elasticity is stretched between the shaft support portions 18 of a pair of arms 17a and 17b of the shaft support member 12, and multiple rolls 14 are rotatably supported by the coil spring 13. The E-shaped retaining rings 23a and 23b function as extension and retraction adjustment means that can adjust the expansion and contraction (tension) of the roll insertion region 26 of the coil spring 13. By appropriately setting the positions of the E-shaped retaining rings 23a and 23b, the roll insertion region 26 of the coil spring 13 can be stretched and held taut (see Figure 5(a)) or loosened (compressed) (see Figure 5(b)). It is also possible to adjust the tension by the load applied to the coil spring 13 stretched across the shaft support portion 18; the larger the load, the easier it is to stretch and hold it taut, and the smaller the load, the easier it is to loosen (compress). When the roll insertion region 26 of the coil spring 13 is stretched and held taut, the biasing force of the coil spring 13 in the direction of bringing the multiple rolls 14 closer together can be strengthened, and when the roll insertion region 26 of the coil spring 13 is loosened, the biasing force of the coil spring 13 can be weakened.

[0029] Therefore, when painting a flat painted surface (not shown) or a painted surface 1a with a large radius of curvature (see Figure 6(a)), by stretching and holding the roll insertion area 26 of the coil spring 13 in a taut state (see Figure 5(a)), it is possible to prevent the central part of one roller 27 in the width direction, which is made up of multiple rolls 14, from sagging due to the weight of the paint or its own weight, thereby suppressing unevenness in the amount of paint applied when painting a flat painted surface or a painted surface 1a with a large radius of curvature.

[0030] Furthermore, when painting a curved surface 1b with a small radius of curvature (see Figure 6(b)), by holding the roll insertion area 26 of the coil spring 13 in a loosened state (see Figure 5(b)), the roll insertion area 26 of the coil spring 13 becomes easier to bend, allowing the outer roll 14 in the width direction to be brought into close contact with the painted surface 1b with less force. As a result, the difference between the pressure from the central roll 14 in the width direction toward the painted surface 1b and the pressure from the outer roll 14 in the width direction toward the painted surface 1b can be kept small, thereby suppressing unevenness in the amount of coating applied when painting a curved surface 1b with a small radius of curvature.

[0031] In this way, the expansion and contraction (tension) of the roll insertion area 26 of the coil spring 13 can be adjusted. Therefore, even if the width (axial length) of the roller 27 is widened, by appropriately setting the expansion and contraction of the roll insertion area 26 of the coil spring 13, it is possible to paint not only on flat painted surfaces but also on painted surfaces with various radii of curvature while suppressing unevenness in the amount of coating applied.

[0032] Therefore, according to this embodiment, both flat and curved painted surfaces 1a and 1b can be painted in a single application over a large area while maintaining a sufficient amount of coating, thereby suppressing unevenness in the coating amount.

[0033] Furthermore, the E-type retaining rings 23a and 23b are attached to the coil spring 13 and function as stoppers that restrict the lateral movement of the multiple rolls 14 relative to the coil spring 13. As a result, the axial movement of the rollers 27 relative to the coil spring 13 is restricted, which helps to suppress the widthwise wobble of the rollers 27 relative to the painted surface during painting.

[0034] Furthermore, since the stoppers (one-side stopper and other-side stopper) that restrict the lateral movement of the multiple rolls 14 relative to the coil spring 13 are E-type retaining rings 23a and 23b attached to the coil spring 13, a simple configuration can be achieved.

[0035] Furthermore, since the support shaft that supports the multiple rolls 14 is a coil spring 13, unlike in the case of a support shaft made of, for example, elastic rubber, the durability of the support shaft can be ensured.

[0036] Furthermore, since the load on the coil spring 13 stretched between the shaft support parts 18 is between 1.0 kg and 4.0 kg, a decrease in operability can be suppressed. If the load on the coil spring 13 stretched between the shaft support parts 18 is less than 1.0 kg, the coil spring 13 may be too soft and sag under the weight of the paint or its own weight, or the roll 14 may come into contact with the arm parts 17a and 17b (see Figure 9). Also, if the load on the coil spring 13 stretched between the shaft support parts 18 is greater than 4.0 kg, the coil spring 13 may be too hard and it may become difficult for the outer end of the roller 27 in the axial direction (the outer roll 14 in the axial direction) to make close contact with the painted surface (see Figure 10), potentially resulting in poor operability. Moreover, if the load on the coil spring 13 stretched between the shaft support parts 18 is between 2.0 kg and 3.5 kg, a decrease in operability can be suppressed even further.

[0037] Furthermore, since the shaft support member 12 is tiltably supported by the gripping member 11 around a shaft extending in the vertical direction, the angle between the gripping member 11 and the shaft support member 12 can be changed. For this reason, as shown in Figure 7, even when the space in front of the curved painted surface 1c (the side the painted surface 1c is facing) is narrow, the angle of the gripping member 11 relative to the shaft support member 12 can be set to avoid obstacles 2 in front of the painted surface 1c, making it easy to paint the curved painted surface 1c all the way to the back in places with limited space.

[0038] Furthermore, by adjusting the expansion and contraction (tension) of the roll insertion area 26 of the coil spring 13, it is possible to prevent the central part of the roller 27 in the width direction from sagging due to the weight of the paint or its own weight, thus allowing the width of the roller 27 to be set longer. For this reason, as shown in Figure 8(a), the width of the roller 27 can be set longer than the width of a typical cushion roller (see Figure 8(b)) (for example, 18 cm) (for example, set to 34 cm), which allows for a wider paint width when painting a surface, and enables efficient painting of the surface. Note that, as shown in Figure 8(c), with a typical regular roller consisting of a single cylindrical roller, when painting a curved surface, the end of the roller lifts off the surface, so the paint width becomes shorter than the width of the roller in question (for example, 18 cm) (for example, 13 cm).

[0039] In this embodiment, the support shafts that support the multiple rolls 14 are coil springs 13, but the invention is not limited to this, and other support shafts such as elastic rubber that can be stretched or compressed may also be used.

[0040] Furthermore, in this embodiment, the shaft support member 12 is configured to be tiltable relative to the gripping member 11, but the invention is not limited to this, and the shaft support member 12 may be fixed to the gripping member 11 in a way that prevents tilting.

[0041] Furthermore, in this embodiment, one of the E-shaped retaining rings 23a is detachably attached to the support shaft (coil spring 13), but the embodiment is not limited to this, and it may be fixed to the support shaft (attached in a way that prevents removal). In other words, it is sufficient that at least one of the two E-shaped retaining rings 23a and 23b is detachably attached to the support shaft.

[0042] Furthermore, in this embodiment, the E-shaped retaining rings 23a and 23b function as expansion / contraction adjustment means that can adjust the expansion / contraction (tension) of the roll insertion area 26 of the coil spring 13. However, the expansion / contraction adjustment means is not limited to the E-shaped retaining rings 23a and 23b, and fasteners of a similar shape or other means may be used. For example, a C-shaped eccentric retaining ring for a shaft may be used instead of the E-shaped retaining ring, or a locking mechanism that can lock a support shaft may be provided on the axial outer surface of the bottom plate 21 of the roll core material 19 of the rolls 14 at both ends in the axial direction, and such a locking mechanism may function as an expansion / contraction adjustment means.

[0043] Although the present invention has been described above based on the above embodiments, the present invention is not limited to the contents of the above embodiments, and can naturally be modified as appropriate without departing from the present invention. In other words, all other embodiments, examples, and operational techniques made by those skilled in the art based on these embodiments are of course included in the scope of the present invention. [Explanation of Symbols]

[0044] 10: Paint roller 11: Gripping member 12: Shaft support member 13: Coil spring (support shaft) 14: Multiple roles 17a, 17b: A pair of arms 23a: One E-type retaining ring (one-sided stopper, extension / retraction adjustment mechanism) 23b: The other E-type retaining ring (other-side stopper, extension / retraction adjustment mechanism) 26: Roll insertion area (area)

Claims

1. A gripping member that can be gripped, A shaft support member having a pair of arms extending in directions away from each other from the gripping member side, and supported by the gripping member, A support shaft having expandable and retractable elasticity, stretched between the pair of arms of the shaft support member and supported by the shaft support member, Multiple rolls are rotatably supported on the aforementioned support shaft and arranged in line along the axial direction of the support shaft, The support shaft includes an expansion / contraction adjustment means capable of adjusting the expansion and contraction of a region that is inserted through the plurality of rolls from one end on one side to the other end on the other side in the axial direction. A paint roller with the following features.

2. The extension and retraction adjustment means comprises a one-side stopper positioned on one side of the plurality of rolls and fixed to the support shaft, or detachably attached to restrict the movement of the plurality of rolls toward the one side, and a other-side stopper positioned on the other side of the plurality of rolls and detachably attached to the support shaft to restrict the movement of the plurality of rolls toward the other side. A painting roller according to feature 1.

3. The aforementioned one-sided stopper and the other-sided stopper are E-type retaining rings. The painting roller according to feature 2.

4. The gripping member extends in a predetermined direction intersecting the axial direction, The shaft support member is tiltably supported by the gripping member with respect to an axis extending in a direction that intersects both the axial direction and the predetermined direction. A paint roller according to any one of claims 1 to 3.

5. The aforementioned support shaft is a coil spring. A paint roller according to any one of claims 1 to 3.

6. The load on the coil spring stretched between the pair of arms is 1.0 kg or more and 4.0 kg or less. The painting roller according to feature 5.

7. A painting method using a painting roller comprising: a pair of arms; a support shaft having retractable elasticity and stretched between the pair of arms; a plurality of rolls rotatably supported on the support shaft and arranged in line in the axial direction of the support shaft; and an extension adjustment means capable of adjusting the extension of a portion of the support shaft through which the plurality of rolls are inserted from one end to the other in the axial direction, Depending on the surface to be painted, the extension and retraction of the area of ​​the support shaft is adjusted by the extension and retraction adjustment means, and the load applied to the area of ​​the support shaft is adjusted. A painting method characterized by the following.

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