Brush tool for painting

Abstract

To provide a paint brush tool capable of directly jetting, to an object to paint, paint sprayed by a nozzle body without contacting a brush body.SOLUTION: A paint brush tool includes a paint brush Y1 and a nozzle body having a nozzle hole. The paint brush has: a brush holder 1 which has bristle ends and arranges the nozzle body; and a brush body H1 which is formed into a circular body CY bundling many bristle materials and is fitted to the brush holder by encircling the nozzle hole. The nozzle body sprays paint into the brush body from the nozzle hole at an injection angle. The brush body has a plural layers of brush parts 1A, 1B, 1C where length of the bristle materials gradually become shorter from an outer periphery OU to an inner periphery IN of the circular body. The respective brush parts are arranged in adjacency between the outer periphery and the inner periphery of the circular body, positioned outside the range of the injection angle θ, and are arranged around the nozzle hole.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a painting brush tool in which a nozzle body for spraying paint at a spraying angle is arranged on a painting brush.

Background Art

[0002] As a technique for spraying paint, Patent Document 1 discloses a paint supply brush device. The paint supply brush device includes a brush fixing base, a nozzle fixing pipe, and a brush. The brush fixing base is formed in a substantially elliptical cross section. The nozzle fixing pipe is arranged concentrically with the brush fixing base and inside the brush fixing base. The brush is planted between the brush fixing base and the nozzle fixing pipe. The brush is formed in an annular body having a substantially elliptical cross section. The brush and the nozzle fixing pipe are fixed by a curable resin agent filled in the brush fixing base. In the paint supply brush device, a nozzle is inserted into the nozzle fixing pipe and fixed. The nozzle has its tip located inside the brush and sprays paint into the brush.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In Patent Document 1, since the tip side of the brush falls into the brush and the paint sprayed from the nozzle hole contacts the fallen brush and is sprayed, the adhesion rate at which the paint is directly sprayed and adhered to the object to be painted decreases.

[0005] An object of the present invention is to provide a painting brush tool capable of improving the paint adhesion rate to an object to be painted without the paint sprayed from the nozzle hole contacting the brush body (each brush part).

Means for Solving the Problems

[0006] Claim 1 according to the present invention is a paint brush tool comprising a paint brush, a nozzle body into which pressurized paint flows and which has nozzle holes for spraying the paint at a spraying angle, and which is disposed on the paint brush, wherein the paint brush has a tufting end, a brush holder on which the nozzle body is disposed, and a brush body formed in an annular body bundling a plurality of hair materials, attached to the brush holder surrounding the nozzle holes, and in the direction of the injection center line of the injection angle, each hair material extends from the tufting end with a hair length, the nozzle body sprays the paint at the spraying angle from the nozzle holes into the brush body, the brush body has a plurality of brush portions formed by bundling a plurality of hair materials in an annular shape and arranged adjacent to each other between the outer circumference and the inner circumference of the annular body, and the hair lengths of the hair materials are configured to be different between the respective brush portions, and each brush portion is formed by shortening the hair length of the hair material compared to the brush portion adjacent on the outer peripheral side of the annular body, The inner peripheral surface of each of the bristle portions is the injection area of the paint sprayed at the injection angle outside is located and is characterized by being disposed surrounding the nozzle holes. In Claim 1, each brush portion may be configured not to be located in the injection area of the paint sprayed at the injection angle and to be disposed surrounding the nozzle holes.

[0007] According to Claim 1 of the present invention, the brush body is composed of a plurality of layers (stages) of brush portions in which the hair length of each hair material is gradually shortened from the outer circumference to the inner circumference of the annular body. Each brush portion is located outside (outside the injection range) the injection area of the paint sprayed at the injection angle from the nozzle holes and is disposed surrounding the nozzle holes. The paint sprayed from the nozzle holes can be ejected from the hair tips of the brush portion on the outer circumference of the annular body without being sprayed onto each brush portion. Since the plurality of layers of brush portions shorten the hair length of each hair material and strengthen the waist of each hair material as they go from the outer circumference to the inner circumference of the annular body, it is possible to suppress falling toward the injection center line side, and the sprayed paint does not adhere without the hair tip side entering (positioning) within the injection range. As a result, the paint sprayed from the nozzle holes can be directly sprayed onto the object to be painted without contacting the brush body (each brush part), and it becomes possible to improve the paint adhesion rate to the object to be painted.

[0008] Claim 2 according to the present invention is, in claim 1, The paint brush includes a reinforcing cylinder portion. The reinforcing cylinder portion is disposed in contact with the bristle portion located at the innermost circumference between the outer circumference and the inner circumference of the annular body, and is made shorter than the bristle length of the bristle portion located at the innermost circumference, and extends from the bristle tip into the bristle body. The inner peripheral surface of the reinforcing cylinder portion is disposed outside the injection region of the paint sprayed at the injection angle. The paint brush according to claim 1, characterized in that The present invention relates to The nozzle hole has an injection hole part for spraying the paint at the injection angle and an inflow hole part whose diameter expands from the injection hole part, and the nozzle body faces the injection hole part into the brush body and at an injection position where the pressurized paint flows into the inflow hole part, and at an extraction position where the pressurized paint flows into the injection hole part and the paint is ejected from the inflow hole part paint It is a brush tool for use.

[0009] According to claim 2, by setting the nozzle body at the injection position, the paint can be sprayed at the injection angle from the nozzle holes into each brush part. By setting the nozzle body at the extraction position, the pressurized paint can be directly ejected into the injection hole part and ejected from the inflow hole part into the brush body. As a result, at the extraction position of the nozzle body, by ejecting the pressurized paint into the injection hole part, the cured paint or the like adhering to the injection hole part can be peeled off and ejected from the inflow hole part, and clogging of the nozzle hole (injection hole part) can be prevented.

Effect of the Invention

[0010] In the present invention, the paint sprayed from the nozzle holes can be directly sprayed onto the object to be painted without contacting the brush body (each brush part).

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Figure 19

Figure 20

Figure 21

Embodiments for Carrying Out the Invention

[0012] The paint brush tool according to the first embodiment and the second embodiment will be described with reference to FIGS. 1 to 21.

[0013] The painting brush tool X1 of the first embodiment will be described with reference to FIGS. 1 to 14.

[0014] In FIGS. 1 to 14, the painting brush tool X1 of the first embodiment includes a painting brush Y1 (brush) and a nozzle body Z (nozzle means).

[0015] As shown in FIGS. 1 to 14, the painting brush Y1 includes a brush holder 1, a brush body H1 (brush main body), a reinforcing cylinder portion 6, and a nozzle mounting hole NH.

[0016] As shown in FIGS. 1 to 14, the brush holder 1 has a hair implanting end 3B, and the nozzle body Z is disposed thereon. The brush holder 1 has a base cylinder portion 2 (inner cylinder member), a holding cylinder portion 3 (outer cylinder member), a closing plate portion 4, and a positioning hole 5.

[0017] As shown in FIGS. 11 to 14, the base cylinder portion 2 is formed, for example, as a cylindrical body having a substantially elliptical cross section (or an elliptical cross section). The base cylinder portion 2 is formed to be inclined at an angle θX (cylinder inclination angle) while being separated from the cylinder center line x (center line of the ellipse) of the base cylinder portion 2 (brush holder 1) from one cylinder end 2A to the other cylinder end 2B.

[0018] As shown in FIGS. 10 to 14, the holding cylinder portion 3 is formed, for example, as a cylindrical body having a substantially elliptical cross section (or an elliptical cross section). The holding cylinder portion 3 is similar to the base cylinder portion 2 and is formed as a cylindrical body having a substantially elliptical cross section (or an elliptical cross section) larger than that of the base cylinder portion 2. The holding cylinder portion 3 is formed to be inclined at an angle θX (cylinder inclination angle) while being separated from the cylinder center line x of the holding cylinder portion 3 (brush holder 1) from one cylinder end 3A to the other cylinder end 3B (hair implanting end).

[0019] As shown in FIGS. 10 to 14, the closing plate portion 4 closes one cylinder end 2A of the base cylinder portion 2 and is fixed to the base cylinder portion 2. The closing plate portion 4 is formed integrally with the base cylinder portion 2, for example.

[0020] As shown in FIGS. 11 to 14, the positioning hole 5 is a circular hole formed in the closing plate portion 4. The positioning hole 5 is arranged concentrically with the base cylinder portion 2 with the center of the hole positioned (coinciding) on the cylinder center line x with the base cylinder portion 2. The positioning hole 5 penetrates the closing plate portion 4 and opens into the base cylinder portion 2 in the direction α of the cylinder center line x of the base cylinder portion 2 (the brush holding body 1) (hereinafter referred to as the “cylinder center line direction α”).

[0021] As shown in FIGS. 11 to 14, the base cylinder portion 2 (inner cylinder member) is arranged concentrically with the holding cylinder portion 3 and inside the holding cylinder portion 3. The base cylinder portion 2 is arranged inside the holding cylinder portion 3 with an annular space R therebetween from the holding cylinder portion 3 (outer cylinder member). An annular space R having a substantially elliptical cross section (or an elliptical cross section) is formed between the outer circumference of the base cylinder portion 2 and the inner circumference of the holding cylinder portion 3. The base cylinder portion 2 is arranged inside the holding cylinder portion 3 with the closing plate portion 4 flush with one cylinder end 3A of the holding cylinder portion 3. Thereby, the brush holding body 1 is formed into a double cylinder body having a substantially elliptical cross section (or an elliptical cross section) by the base cylinder portion 2 and the holding cylinder portion 3. In the holding cylinder portion 3, the other cylinder end 3B serves as a hair implanting end (hereinafter referred to as the “hair implanting end 3B”).

[0022] As shown in FIGS. 13 and 14, the brush holding body 1 inserts a large number (a large number of) hair materials g (hairs) into the space (annular space R) between the base cylinder portion 2 (inner cylinder member) and the holding cylinder portion 3 (outer cylinder member), fills it with a curable resin agent G, and holds the large number of hair materials g.

[0023] As shown in FIGS. 7, 10 to 14, the brush body H1 is formed into an annular body CY in which a large number (a large number of) hair materials g (hairs) are bundled. The brush body H1 is formed into an annular body CY having, for example, an elliptical cross section (or a substantially elliptical cross section) in which a large number of hair materials g are bundled. The brush body H1 is formed into an annular body having an elliptical cross section with the cylinder center line x of the brush holding body 1 (base cylinder portion 2) as the brush center line. In the brush body H1, the hair material g is animal hair or the like, for example, horsehair.

[0024] As shown in Fig. 12, the bristle body H1 has a bristle thickness T (wall thickness) formed by a large number of bristle materials g between the outer periphery OU and the inner periphery IN of the annular body CY (bristle body H1). In the annular body CY, the outer periphery OU is an annular outer periphery (annular outer peripheral surface), and the inner periphery IN is an annular inner periphery (annular inner peripheral surface).

[0025] As shown in Figs. 12 to 14, the bristle body H1 is attached to the bristle holder 1 surrounding the base cylinder portion 2. One bristle end side of a large number of bristle materials g of the bristle body H1 is tightly inserted into the annular space R (between the base cylinder portion 2 and the holding cylinder portion 3), and is arranged in an annular shape with an elliptical cross-section. A large number of bristle materials g are attached to the bristle holder 1 (base cylinder portion 2 and holding cylinder portion 3) integrally with one bristle end side of each bristle material g by a curable resin agent G filled in the annular space R (between the base cylinder portion 2 and the holding cylinder portion 3).

[0026] As shown in Figs. 10, 13 and 14, in the bristle body H1 in the cylinder center line direction α of the bristle holder 1 (base cylinder portion 2), each bristle material g has a bristle length and extends from the implanting end 3B. The bristle body H1 (each bristle material g) is formed to be inclined at an angle θB (bristle angle) while being separated from the cylinder center line x of the bristle holder 1 from the implanting end 3B.

[0027] As shown in Figs. 12 to 14, between the outer periphery OU (annular outer peripheral surface) and the inner periphery IN (annular inner peripheral surface) of the annular body CY (bristle body H1), the bristle body H1 has a plurality of bristle portions 1A, 1B, 1C,... formed by bundling a plurality of bristle materials g in an annular shape (a plurality of layers (a plurality of stages)). Each of the bristle portions 1A, 1B, 1C,... is arranged (formed) adjacent to each other between the outer periphery OU and the inner periphery IN of the annular body CY (bristle body H1). Each of the bristle portions 1A, 1B, 1C,... becomes the first-layer (first-stage) bristle portion 1A, the second-layer (second-stage) bristle portion 1B, the third-layer (third-stage) bristle portion 1C,... from the outer periphery OU to the inner periphery IN of the annular body CY.

[0028] As shown in Fig. 14, the bristle body H1 is configured such that the lengths L1, L2, L3,... of the bristles g are different among the respective bristle portions 1A, 1B, 1C,.... The lengths L1, L2, L3,... of the bristles of the respective bristle portions 1A, 1B, 1C,... are the lengths between the implanting end 3B and the bristle tips 1a, 1b, 1c,... of the respective bristle portions 1A, 1B, 1C,.... As shown in Fig. 14, each of the bristle portions 1A, 1B, 1C,... is formed to have a shorter length of each bristle material g than that of the adjacent bristle portion on the outer periphery OU side of the annular body CY. The bristle portion 1B of the second layer has a shorter length of each bristle g than the bristle portion 1A of the first layer adjacent on the outer periphery OU side of the annular body CY (L1 > L2), and the bristle portion 1C of the third layer is formed to have a shorter length of each bristle material g than the bristle portion 1B of the second layer adjacent on the outer periphery OU side of the annular body CY (L1 > L2 > L3). The bristle body H1 is composed of a plurality of stages (a plurality of layers) of bristle portions 1A, 1B, 1C,... in which the lengths L1, L2, L3,... of the respective bristle materials g are gradually shortened from the outer periphery OU to the inner periphery IN of the annular body CY. Thereby, each of the bristle portions 1A, 1B, 1C,... strengthens the waist of each bristle material g as it goes from the outer periphery OU to the inner periphery IN of the annular body CY (bristle body H1), and it becomes difficult to fall toward the cylinder center line x side (the inside of the bristle body H1) of the bristle holder 1. The waist of each bristle material g of each of the bristle portions 1A, 1B, 1C,... becomes stronger than that of the adjacent bristle portion on the outer periphery OU side of the annular body CY, and bristle portion 1A < bristle portion 1B < bristle portion 1C <.... Except for the bristle portion 1A of the first layer, each of the bristle portions 1B, 1C,... holds the adjacent bristle portion on the outer periphery OU side of the annular body CY and prevents (suppresses) the inward movement toward the cylinder center line x side. fall

[0029] ​As shown in FIGS. 13 and 14, the annular outer perimeters of the respective bristle portions 1A, 1B, 1C, … have an outer perimeter major axis A, B, C, … of an elliptical cross-section and an outer perimeter minor axis a, b, c, … of an elliptical cross-section at the bristle tips 1a, 1b, 1c, …. The outer perimeter major axes A, B, C, … of the respective bristle portions 1A, 1B, 1C, … are gradually shortened from the outer perimeter OU to the inner perimeter IN of the annular body CY (A > B > C > …). The outer perimeter minor axes a, b, c, … of the respective bristle portions 1A, 1B, 1C, … are gradually shortened from the outer perimeter OU to the inner perimeter IN of the annular body CY (a > b > c > …). The outer perimeter major axes B, C, … of the respective bristle portions 1B, 1C, … except for the first layer become the inner perimeter major axes of the elliptical cross-sections of the respective adjacent bristle portions 1A, 1B, … on the outer perimeter OU side of the annular body CY (bristle body H1). The outer perimeter minor axes b, c, … of the respective bristle portions 1B, 1C, … except for the first layer become the inner perimeter minor axes of the elliptical cross-sections of the adjacent bristle portions 1A, 1B, 1C, … on the outer perimeter OU side of the annular body CY (bristle body H1). Between the outer perimeter OU and the inner perimeter IN of the annular body CY, the inner perimeter of the bristle portion located closest to the inner perimeter IN (the inner perimeter of the bristle body H1) has an inner perimeter major axis N of an elliptical cross-section and an inner perimeter minor axis n of an elliptical cross-section. As a result, each bristle portion 1A, 1B, 1C, … is formed into an annular body with an elliptical cross-section that gradually decreases from the outer perimeter OU to the inner perimeter IN of the annular body CY (bristle body H1).

[0030] As shown in FIGS. 12 to 14, the reinforcing cylinder portion 6 is formed into a cylindrical body with a metal such as copper or a wire mesh. The reinforcing cylinder portion 6 is formed into a cylindrical body with a substantially elliptical cross-section (or an elliptical cross-section), for example. The reinforcing cylinder portion 6 is formed to be inclined at an angle θX (cylinder inclination angle) while being separated from the cylinder center line of the reinforcing cylinder portion 6 from one cylinder end 6A toward the other cylinder end 6B. The reinforcing cylinder portion 6 is disposed between the bristle body H1 and the base cylinder portion 2 (bristle holder 1) (annular space R). The reinforcing cylinder portion 6 is inserted between the bristle body H1 and the base cylinder portion 2 from one cylinder end 6A and fixed to the bristle holder 1. The reinforcing cylinder portion 6 is disposed adjacent (in contact) to the bristle portion located closest to the inner perimeter IN between the outer perimeter OU and the inner perimeter IN of the annular body CY (bristle body H1). The reinforcing cylinder portion 6 extends into the brush body H1 from the other cylinder end 2B of the base cylinder portion 2 in the cylinder center line direction α of the brush holder 1. The reinforcing cylinder portion 6 is made shorter than the hair length of the brush portion located at the innermost circumference IN and extends into the brush body H1. The reinforcing cylinder portion 6 extends with a cylinder length LT from the tuft end 3B (LT < L3). Thereby, the reinforcing cylinder portion 6 contacts the brush portion at the innermost circumference and prevents the brush body H1 from falling toward the cylinder center line x of the brush body H1.

[0031] As shown in FIGS. 11, 13, and 14, the nozzle mounting hole NH is a circular hole formed in the brush holder 1. The nozzle mounting hole NH is disposed in the brush holder 1 at the center of the outer peripheral major axes A, B, C,... of the respective brush portions 1A, 1B, 1C,.... The nozzle mounting hole NH penetrates the holding cylinder portion 3, each hair material g containing the curable resin agent G in the annular space R, and the base cylinder portion 2 in the direction β orthogonal to the cylinder center line x of the brush holder 1 and opens into the base cylinder portion 2.

[0032] In the paint brush Y1, as shown in FIGS. 12 to 14, the brush body H1 has a plurality of layers (multiple stages), for example, and is configured to have three layers (three stages) of brush portions 1A, 1B, 1C. The brush body H1 has a first-layer (first-stage) brush portion 1A on the outer circumference OU of the annular body CY (brush body H1) and a third-layer (third-stage) brush portion 1C on the inner circumference IN of the annular body CY (brush body H1), and has a second-layer (second-stage) brush portion 1B between the first and third-layer brush portions 1A, 1C.

[0033] The nozzle body Z has a nozzle hole 7 into which the pressurized paint PW flows and sprays (injects) the flowed-in paint PW at a spray angle θ. The nozzle body Z is disposed on the brush holder 1. As shown in FIGS. 4 to 9, the nozzle body Z has a nozzle portion 8 (nozzle tip) and an adapter 9.

[0034] As shown in FIGS. 3 to 9, the nozzle portion 8 (nozzle tip) is, for example, a sector-shaped nozzle tip and has a nozzle axis 10, a nozzle lever 11, and a nozzle hole 7.

[0035] The nozzle shaft 10 is formed into a cylinder of a metal such as iron or steel. As shown in FIGS. 6, 7, and 9, the nozzle shaft 10 has a large-diameter shaft portion 12 and a small-diameter shaft portion 13 that has a stepped portion in the large-diameter shaft portion 12 and whose diameter is reduced.

[0036] As shown in FIGS. 6, 7, and 9, the nozzle lever 11 is attached to the axial end of the large-diameter shaft portion 12 on the nozzle shaft 10.

[0037] As shown in FIGS. 3 to 7 and 9, the nozzle hole 7 is formed in the nozzle shaft 10. The nozzle hole 7 penetrates the small-diameter shaft portion 13 and is formed in the small-diameter shaft portion 13 (nozzle shaft 10) in a direction orthogonal to the axial center line σ of the nozzle shaft 10. The nozzle hole 7 has an injection hole portion 17 and an inflow hole portion 18 that expands in diameter from the injection hole portion 17. The injection hole portion 17 is, for example, an elliptical hole in cross section and opens to the outer periphery of the nozzle shaft 10 (small-diameter shaft portion 13) at the injection port 19. The inflow hole portion 18 opens to the outer periphery of the nozzle shaft 10 (small-diameter shaft portion 13) at the inflow port 20.

[0038] In the nozzle portion 8 (nozzle body Z), the pressurized paint PW flows from the inflow port 20 into the inflow hole portion 18 (nozzle hole 7), and the injection hole portion 17 sprays (injects) the inflowed paint PW at the injection angle θ. Thereby, the nozzle portion 8 (nozzle body Z) sprays the pressurized paint PW from the injection port 19 of the injection hole portion 17 at the injection angle θ.

[0039] As shown in FIGS. 3 to 7 and 9, the adapter 9 has a guide cylinder portion 31, an adapter main body 32, and an adjustment ring 33.

[0040] As shown in FIGS. 3 to 7 and 9, the guide cylinder portion 31 is formed, for example, in a cylindrical shape (cylindrical body). The guide cylinder portion 31 has a guide hole 34 that penetrates the guide cylinder portion 31 in the direction of the cylinder center line δ.

[0041] The guide hole 34 opens at each cylinder end 31A, 31B of the guide cylinder portion 31. The guide hole 34 has a female screw portion 35 (female screw hole) on one cylinder end 31A side.

[0042] As shown in FIGS. 3 to 7 and FIG. 9, the adapter body 32 is formed, for example, on a cylindrical body (circular shaft body). The adapter body 32 has an outflow hole 37, a plurality (a pair) of fixing plate portions 38, 39, and a nozzle fixing hole 40.

[0043] As shown in FIGS. 3 to 7 and FIG. 9, the outflow hole 37 is formed through the adapter body 32 in the direction of the axial center line γ of the adapter body 32. The outflow hole 37 opens at each axial end 32A, 32B of the adapter body 32.

[0044] As shown in FIGS. 3 to 7 and FIG. 9, each fixing plate portion 38 is formed at the other axial end 32B of the adapter body 32. The fixing plate portions 38, 39 are arranged at intervals in a direction orthogonal to the axial center line γ of the adapter body 32. The fixing plate portions 38, 39 project from the other axial end 32B in parallel with each other in the direction of the axial center line γ of the adapter body 32. The outflow hole 37 is formed by arranging it between the fixing plate portions 38, 39 at the other axial end 32B. The outflow hole 37 opens at the other axial end 32B of the adapter body 32 between the fixing plate portions 38, 39.

[0045] As shown in FIGS. 3 to 5, 7 and FIG. 9, the nozzle fixing hole 40 is formed in each of the fixing plate portions 38, 39. The nozzle fixing hole 40 is formed through each of the fixing plate portions 38, 39 in a direction orthogonal to the axial center line γ of the adapter body 32.

[0046] The adapter 9 is positioned with the fixing plate portions 38, 39 and the nozzle fixing hole 40 protruding from the positioning hole 5 into the base cylinder portion 2 and arranged on the brush holder 1. As shown in FIGS. 3 to 7, the adapter 9 is configured by arranging (inserting) the adapter body 32 and the adjustment ring 33 into the guide cylinder portion 31 (inside the guide hole 34). The adapter body 32 is inserted into the guide hole 34 of the guide cylinder portion 31 from one shaft end 32A, and the fixing plate portions 38, 39 are arranged to protrude from the other cylinder end 31B of the guide cylinder portion 31. The adjustment ring 33 is inserted into the guide hole 34 of the guide cylinder portion 31 and is arranged in contact with one shaft end 32A of the adapter body 32.

[0047] In the nozzle body Z, as shown in FIGS. 3 to 7, the adapter 9 inserts the guide cylinder portion 31, the adapter body 32, and the adjustment ring 33 into the positioning hole 5 from the fixing plate portions 38, 39 (one cylinder end 31A, one shaft end 32A) and is arranged on the brush holder 1. The guide cylinder portion 31 is inserted into the positioning hole 5 in contact with the inner peripheral surface of the positioning hole 5.

[0048] As shown in FIGS. 3 to 7, the adapter 9 inserts the fixing plate portions 38, 39 protruding from the other cylinder end 31B of the guide cylinder portion 31 toward the nozzle mounting hole NH and the nozzle fixing hole 40 facing the nozzle mounting hole NH into the positioning hole 5.

[0049] In the nozzle body Z, as shown in FIGS. 1 to 6, the nozzle portion 8 is rotatably inserted into the nozzle mounting hole NH and the nozzle fixing hole 40 and is arranged on the brush holder 1. The nozzle portion 8 is inserted into the nozzle mounting hole NH from the small-diameter shaft portion 13 of the nozzle shaft 10, and the small-diameter shaft portion 13 is press-fitted into the nozzle fixing holes 40 of the fixing plate portions 38, 39 and arranged.

[0050] As shown in FIGS. 6 and 7, the nozzle portion 8 abuts the large-diameter shaft portion 12 of the nozzle shaft 10 against the adapter body 32 from the nozzle mounting hole NH side. Thereby, the nozzle portion 8 positions the nozzle hole 7 (the injection hole portion 17 and the inflow hole portion 18) between the fixing plate portions 38, 39 and arranges the nozzle hole 7 to be communicable with the outflow hole 37 of the guide cylinder portion 31. The nozzle portion 8 arranges the injection center line ε of the injection angle θ of the injection hole portion 17 (nozzle hole 7) to be located (coincide) with the cylinder center line x of the brush holder 1 and is arranged on the brush holder 1. The nozzle lever 11 is disposed outside the brush holder 1.

[0051] As shown in FIGS. 4 to 7, the nozzle portion 8 (nozzle body) is disposed on the brush holder 1 with the injection hole portion 17 (injection port 19) facing the inside of the brush body H1 (the hair implanting end 3B). Thereby, the nozzle body Z (nozzle portion 8) is disposed at the injection position P1. The injection position P1 is a position where the injection hole portion 17 (injection port 19) faces the inside of the brush body H1 (the hair implanting end 3B) and the pressurized paint PW flows into the inflow hole portion 18. At the injection position P1, as shown in FIGS. 4 to 7, the inflow hole portion 18 (inlet 20) of the nozzle portion 8 communicates with the outflow hole 37 of the adapter body 32 and the inside of the adjustment ring 33.

[0052] As shown in FIG. 4, the brush body H1 extends from the hair implanting end 3B of the brush holder 1 with the length of each hair material g in the direction F of the injection center line ε of the injection angle θ (hereinafter referred to as "injection center line direction F"). Each of the brush portions 1A, 1B, and 1C extends from the hair implanting end 3B of the brush holder 1 with the hair lengths L1, L2, and L3 of the respective hair materials g at the injection position P1 of the nozzle body Z (nozzle portion 8) in the injection center line direction F.

[0053] As shown in FIGS. 4 and 6, the brush body H1 is disposed surrounding the nozzle hole 7 (injection hole portion 17) at the injection position P1 of the nozzle body Z (nozzle portion 8). Each of the brush portions 1A, 1B, and 1C is disposed surrounding the injection hole portion 17 (injection port 19) at the injection position P1 of the nozzle body Z (nozzle portion 8). Each of the brush portions 1A, 1B, and 1C is disposed surrounding the injection hole portion 17 (injection port 19) with the center line (elliptical center line) of the elliptical cross section positioned (coinciding) with the injection center line ε.

[0054] As shown in FIGS. 4 and 6, the nozzle body Z (nozzle portion 8) sprays the paint PW in a fan shape with an injection angle θ from, for example, the injection hole portion 17 (injection port 19) into the brush body H1 (inside each brush portion 1A, 1B, 1C) at the injection position P1. As shown in FIG. 4, the injection hole portion 17 sprays the paint PW in a fan shape with an injection angle θ in the direction of the major axes A, B, C, N (the direction in which the major axes extend) of each brush portion 1A, 1B, 1C. The injection hole portion 17 (injection port 19) sprays (injects) the paint PW into the brush body H1 at an injection angle θ (fan shape) in the major axis direction of each brush portion 1A, 1B, 1C, and sprays (injects) the paint PW into the brush body H1 while spreading it from the injection port 19 toward the first-layer (first-stage) brush portion 1A in the minor axis direction (the direction in which the minor axes extend) of the minor axes a, b, c, n of each brush portion 1A, 1B, 1C. Thereby, the nozzle hole 7 forms an injection region FA (injection range) of the paint PW sprayed at an injection angle θ from the injection hole portion 17 (injection port 19). As shown in FIGS. 4 and 6, the paint PW is sprayed into each brush portion 1A, 1B, 1C in the injection region FA (injection range).

[0055] In the brush body H1, as shown in FIGS. 4, 6, 10 to 12, each brush portion 1A, 1B, 1C is located outside the injection region FA (outside the injection range) of the paint PW sprayed from the nozzle hole 7 at an injection angle θ at the injection position P1 of the nozzle body Z (nozzle portion 8). region FA's outside) and is arranged surrounding the nozzle hole 7 (injection hole portion 17). As shown in FIGS. 4 and 6, each brush portion 1A, 1B, 1C has its inner peripheral major axes B, C, N and inner peripheral minor axes b, c, n longer than the injection region FA (injection range) at the injection position P1 of the nozzle body Z (nozzle portion 8). region It is arranged outside the injection region FA. Thereby, the annular inner peripheral surface (elliptical inner peripheral surface) of each brush portion 1A, 1B, 1C is located outside the injection region FA with a gap from the injection region FA as shown in FIGS. 4 and 6, and is arranged surrounding the nozzle hole 7 (injection hole portion 17). Each of the bristle portions 1A, 1B, and 1C is arranged to surround the nozzle hole 7 (injection hole portion 17) without being located in the injection region FA of the paint PW sprayed at an injection angle θ from the nozzle hole 7 (injection hole portion 17). In the bristle holder 1, as shown in FIGS. 4 and 6, the base cylinder portion 2 and the reinforcing cylinder portion 6 are arranged with their annular inner peripheral surfaces 2C and 6C located outside the injection region FA (outside the injection region FA).

[0056] As shown in FIGS. 1, 2, 4 to 7, for example, the painting brush tool X1 is attached to a painting gun PG.

[0057] As shown in FIGS. 1 to 9, the painting gun PG has a gun body 51, a gun nozzle portion 52 (nozzle body), and an operation lever 53 (trigger). The gun body 51 is connected to a paint supply source (not shown) that supplies pressurized paint PW, and the pressurized paint flows in from the paint supply source. As shown in FIGS. 1 and 2, the gun nozzle portion 52 is attached (arranged) to the gun body 51. The gun nozzle portion 52 has a paint ejection port 54. As shown in FIGS. 1 and 2, the operation lever 53 is rotatably attached to the gun body 51. The painting gun PG ejects the pressurized paint PW from the paint ejection port 54 by a rotational operation (trigger operation) of the operation lever 53.

[0058] As shown in FIGS. 1, 2, 4 to 7, the painting brush tool X1 inserts the gun nozzle portion 52 of the painting gun PG into the guide hole 34 of the guide cylinder portion 31 and screws (screws in) into the female screw portion 35 of the guide hole 34 to be attached to the gun body 51 (painting gun PG). The gun nozzle portion 52 is in close contact with the adjustment ring 33 within the guide hole 34 of the guide cylinder portion 31. When the painting brush tool X1 is attached to the painting gun PG, the nozzle hole 7 (inflow hole portion 18) communicates with the paint ejection port 54 of the gun nozzle portion 52 through the outflow hole 37 of the adapter body 32 and within the adjustment ring 33 at the injection position P1 of the nozzle body Z (nozzle portion 8), as shown in FIGS. 4 to 7.

[0059] When the operation lever 53 of the paint gun PG is rotationally operated (triggered) at the injection position P1 of the nozzle body Z (nozzle portion 8), the pressurized paint PW is ejected from the paint ejection port 54 of the gun nozzle portion 52 into the outflow hole 37 of the adapter body 32. The paint PW ejected into the outflow hole 37 of the adapter body 32 flows into the nozzle hole 7 (inflow hole portion 18) from the inlet 20 and is sprayed from the injection hole portion 17 (injection port 19) toward the inside of the brush body H1 (bristle planting end 3B) at the injection angle θ. In the nozzle body Z (nozzle portion 8), as shown in FIGS. 4 and 6, the injection hole portion 17 sprays into each of the brush portions 1A, 1B, 1C,... within the spray region FA of the paint PW sprayed at the injection angle θ from the injection port 19. Since each of the brush portions 1A, 1B, 1C is arranged outside the spray region FA, the paint PW sprayed from the injection port 19 is not sprayed (does not come into contact) with the annular inner peripheral surface 2C of the base cylinder portion 2 of the brush holder 1 and the annular inner peripheral surface 6C of the reinforcing cylinder portion 6, and is sprayed into each of the brush portions 1A, 1B, 1C, as shown in FIGS. 4 and 6. Within each of the brush portions 1A, 1B, 1C, the sprayed paint PW is not sprayed (does not come into contact) with each of the brush portions 1A, 1B, 1C, and is ejected from the tips 1a of the bristles of the first-layer (first-stage) brush portion 1A, as shown in FIGS. 4 and 6. At this time, since each of the brush portions 1A, 1B, 1C shortens the bristle lengths L1, L2, L3 of the respective bristle materials g and strengthens the waists of the respective bristle materials g as they go from the outer circumference OU to the inner circumference IN of the annular body CY, they are prevented (inhibited) from falling toward the injection center line ε side. Thus, the sprayed paint PW does not adhere because the tip sides 1a, 1b, 1c of each of the brush portions 1A, 1B, 1C do not enter (are not located) within the spray region FA (within the spray range).

[0060] The rotational operation (trigger operation) of the operation lever 53 of the paint gun PG is released, the spraying of the paint PW is stopped, and the nozzle lever 11 of the nozzle portion 8 is rotated by 180 degrees. In the nozzle portion 8, as shown in FIG. 8, the nozzle shaft 10 (large-diameter shaft portion 12 and small-diameter shaft portion 13) is rotated to communicate the injection hole portion 17 with the outflow hole 37 of the adapter body 32. As a result, the nozzle body Z (nozzle portion 8) is moved from the injection position P1 to the extraction position P2 as shown in FIGS. 6 to 8. At the extraction position P2, the inflow hole portion 18 (inlet 20) of the nozzle hole 7 is directed toward the inside of the brush body H1 (bristle implantation end 3B) as shown in FIG. 8, and the injection hole portion 17 communicates with the outflow hole 37 of the adapter body 32 from the injection port 19. At the extraction position P2, the injection hole portion 17 of the nozzle hole 7 communicates with the paint ejection port 54 (gun nozzle portion 52) of the painting gun PG through the outflow hole 37 of the adapter body 32 and inside the adjustment ring 33.

[0061] When the operation lever 53 of the painting gun PG is rotated (trigger operation) at the extraction position P2 of the nozzle body Z (nozzle portion 8), the pressurized paint PW flows out from the paint ejection port 54 of the gun nozzle portion 52 to the outflow hole 37 of the adapter body 32. The paint PW that has flowed out to the outflow hole 37 is ejected from the injection port 19 to the injection hole portion 17 and is ejected into the brush body H1 from the inflow hole portion 18 (inlet 20). The paint PW ejected into the injection hole portion 17 flows out (ejects) into the inflow hole portion 18 together with the cured paint PS adhering to the injection hole portion 17 as shown in FIG. 8, and is ejected into the brush body H1 (inside each bristle portion 1A, 1B, 1C,...) from the inlet 20. As a result, at the extraction position P2 of the nozzle body Z (nozzle portion 8), by directly ejecting the pressurized paint PW into the injection hole portion 17, the cured paint PS and the like adhering to the injection hole portion 17 can be peeled off, and can be ejected from the inflow hole portion 18 (inlet 20), preventing clogging of the injection hole portion 17 (nozzle hole 7).

[0062] The painting brush tool of the second embodiment will be described with reference to FIGS. 15 to 21. In FIGS. 15 to 21, the same reference numerals as those in FIGS. 1 to 14 denote the same members and the same configurations, and thus detailed descriptions thereof are omitted.

[0063] In FIGS. 15 to 21, the painting brush tool X2 of the second embodiment (hereinafter referred to as "painting brush tool X2") is configured such that the brush body H1 has two layers (two stages) of brush portions 1A and 1B with respect to the painting brush tool X1, and the rest is provided with the same configuration and the same members as the painting brush tool X1.

[0064] As shown in FIGS. 15 to 21, the painting brush tool X2 includes a painting brush Y2 (brush) and a nozzle body Z.

[0065] As shown in FIGS. 10, 19 to 21, the painting brush Y2 includes a brush holder 1, a brush body H1 (brush main body), a reinforcing cylinder portion 6, and a nozzle mounting hole NH.

[0066] In the painting brush Y2, as shown in FIGS. 19 to 21, the brush body H1 has a plurality of layers (a plurality of stages), for example, and is configured to have two layers (two stages) of brush portions 1A and 1B. In the painting brush Y2, the brush body H1 has a first-layer (first-stage) brush portion 1A on the outer circumference OU of the annular body CY and a second-layer (second-stage) brush portion 1B on the inner circumference IN of the annular body CY. In the painting brush Y2, the brush body H1 is attached to the brush holder 1 (the base cylinder portion 2 and the holding cylinder portion 3) in the same manner as described with reference to FIGS. 12 to 14 (see FIGS. 20 and 21).

[0067] In the painting brush tool X2, the nozzle body Z has a nozzle portion 8 (nozzle tip) and an adapter 9, and is disposed on the brush holder 1 of the painting brush Y2 in the same manner as described with reference to FIGS. 4 to 7 (see FIGS. 17 and 18). The nozzle body Z (nozzle portion 8) is set to the injection position P1 or the extraction position P2 in the same manner as described with reference to FIGS. 4 to 8.

[0068] In the painting brush Y2, as shown in FIG. 21, in the injection center line direction F, the brush body H1 extends from the hair-planting end 3B of the brush holder 1 with the hair length of each hair material g. Each bristle part 1A, 1B is at the injection position P1 of the nozzle body Z (nozzle part 8), and in the injection center line direction F, it extends from the implanting end 3B of the bristle holder 1 with the hair lengths L1, L2 of each hair material g.

[0069] In the painting brush Y2, as shown in FIGS. 16 to 18, the bristle body H1 is arranged surrounding the nozzle hole 7 (injection hole part 17) at the injection position P1 of the nozzle body Z (nozzle part 8). Each bristle part 1A, 1B is arranged surrounding the injection hole part 17 (injection port 19) at the injection position P1 of the nozzle body Z (nozzle part 8). Each bristle part 1A, 1B is arranged surrounding the injection hole part 17 (injection port 19) with the center line (elliptical center line) of the elliptical cross section positioned (coinciding) with the injection center line ε.

[0070] In the painting brush tool X2, the injection hole part 17 (injection port 19) forms the injection both sides (injection range) of the paint PW sprayed at the injection angle θ from the nozzle hole 7 (injection hole part 17), and sprays the paint PW into the bristle body H1, similar to that described in FIGS. 4 to 6. The paint PW is sprayed into each bristle part 1A, 1B in the injection region PA (injection range) as shown in FIGS. 17 and 18.

[0071] In the bristle body H1 of the painting brush tool X2, each bristle part 1A, 1B is located outside the injection region FA (outside the injection range) of the paint PW sprayed at the injection angle θ at the injection position P1 of the nozzle body Z (nozzle part 8) as shown in FIGS. 17 and 18, and is arranged surrounding the nozzle hole 7 (injection hole part 17). As shown in FIGS. 17 to 18, each bristle part 1A, 1B has the inner peripheral major axis B, N and the inner peripheral minor axis b, n longer than the injection region FA (injection range) at the injection position P1 of the nozzle body Z (nozzle part 8), and is arranged outside the injection region FA. Thereby, the annular inner peripheral surface (elliptical inner peripheral surface) of each bristle part 1A, 1B is located outside the injection region FA as shown in FIGS. 17 and 18, and is arranged surrounding the nozzle hole 7 (injection hole part 17). Each of the brush portions 1A and 1B is arranged to surround the nozzle hole 7 (injection hole portion 17) without being located in the injection region FA (inside the injection region FA) of the paint PW sprayed at the injection angle θ from the nozzle hole 7 (injection hole portion 17). In the brush holder 1 of the painting brush tool X2, as shown in FIGS. 17 and 18, the base cylinder portion 2 and the reinforcing cylinder portion 6 are arranged with their annular inner peripheral surfaces 2C and 6C located outside the injection range FA (outside the injection range FA).

[0072] The painting brush tool X2 is mounted on, for example, a painting gun PG (see FIG. 15) in the same manner as described with reference to FIGS. 1 to 7.

[0073] When the operation lever 53 of the painting PG is rotationally operated (trigger operation) at the injection position P1 of the nozzle body Z (nozzle portion 8), the paint PW is sprayed from the injection hole portion 17 (injection port 19) at the injection angle θ toward the brush body H1 (bristle planting end 3B) in the same manner as described with reference to FIGS. 4 to 7. In the nozzle body Z (nozzle portion 8), as shown in FIGS. 17 and 18, the injection hole portion 17 sprays into each of the brush portions 1A and 1B within the injection region FA (injection range) of the paint PW sprayed at the injection angle θ from the injection port 19. Since each of the brush portions 1A and 1B is located outside the injection region FA, the paint PW sprayed from the injection port 19 is sprayed into each of the brush portions 1A and 1B without being sprayed onto (without contacting) the annular inner peripheral surface 2C of the base cylinder portion 2 of the brush holder 1 and the annular inner peripheral surface 6C of the holding cylinder portion 3, as shown in FIGS. 17 and 18. Within each of the brush portions 1A and 1B, the sprayed paint PW is ejected from the tips 1a of the bristles of the first layer (first stage) of the brush portion 1A without being sprayed onto (without contacting) each of the brush portions 1A and 1B, as shown in FIGS. 17 and 18. At this time, each of the brush portions 1A and 1B shortens the bristle lengths L1 and L2 of the respective bristle materials g and strengthens the waists of the respective bristle materials g as it goes from the outer circumference OU to the inner circumference IN of the annular body CY, so that it is prevented (suppressed) from falling toward the injection center line ε side. As a result, the tip ends 1a, 1b sides of the respective bristle portions 1A, 1B do not enter (position) within the spray region FA (within the spray range), and the sprayed paint PW does not adhere thereto.

[0074] In the painting brushes X1, X2, the bristle body H1 is not limited to being configured to have three-layer (three-stage) or two-layer (two-stage) bristle portions, and may be configured to have a plurality of layers (a plurality of stages) of bristle portions. The plurality of layers (a plurality of stages) of bristle portions 1A, 1B, 1C,... are located outside the spray region FA (outside the spray range) of the paint PW sprayed at the spray angle θ at the spray position P1 of the nozzle body Z (nozzle portion 8), and are arranged surrounding the nozzle hole 7 (spray hole portion 17).

Example

[0075] A spray test was conducted on the effects of the painting brush according to the present invention.

[0076] <1> Object of the spray test The spray test was conducted for Example 1 and Example 2.

[0077] A) Example 1 Example 1 is the painting brush X1 of the first embodiment. In Example 1, as shown in FIGS. 4 to 7 and FIGS. 12 to 14, the bristle body H is composed of three-layer (three-stage) bristle portions 1A, 1B, 1C. The bristle body H1 (major axis and minor axis) of Example 1, as shown in FIGS. 12 and 14, was set as A = 70 mm, B = 56 mm, C = 46 mm, N = 37.2 mm, a = 62 mm, b = 48 mm, c = 38 mm, n = 29.2 mm, and three-layer (three-stage) respective bristle portions 1A, 1B, 1C having an elliptical (annular) cross section were formed. The respective bristle portions 1A, 1B, 1C (bristle lengths) of Example 1 were set as L1 = 60 mm, L2 = 45 mm, L3 = 30 mm as shown in FIGS. 4 and 14.

[0078] B) Example 2 Example 2 is the painting brush X2 of the second embodiment. In Example 2, as shown in FIGS. 16 to 21, the brush body H1 is composed of two layers (two steps) of brush portions 1A and 1B. In Example 2, the brush body H1 (major axis and minor axis) has, as shown in FIGS. 17, 18, 20, and 21, A = 70 mm, B = 46 mm, N = 34 mm, a = 62 mm, b = 38 mm, and n = 30 mm, and constitutes each of the two-layer (two-step) brush portions 1A and 1B having an elliptical (annular) cross-section. For each of the brush portions 1A and 1B (brush length) in Example 2, as shown in FIGS. 17 and 21, L1 = 10 mm and L2 = 35 mm.

[0079] C) In Example 1 and Example 2, as shown in FIGS. 10 and 11, the brush holder 1 is formed into a double cylinder having an elliptical cross-section. The base cylinder portion 2 has a cylinder length LY = 46 mm, an inner peripheral major axis LB = 34 mm, and an inner peripheral minor axis Lb = 26 mm. The holding cylinder portion 3 has a cylinder length LX = 30 mm.

[0080] D) In Example 1 and Example 2, as shown in FIGS. 13 and 14, the reinforcing cylinder portion 6 is formed into an elliptical cross-section, and has a cylinder length LT = 16 mm, an inner peripheral major axis LQ = 35.6 mm, and an inner peripheral minor axis Lq = 27.6 mm.

[0081] E) In Example 1 and Example 2, as shown in FIG. 10, the angle θB = 8.5 degrees for the brush body H1, and the angles θx = 3.8 degrees for the base cylinder portion 2, the holding cylinder portion 3, and the reinforcing cylinder portion 6.

[0082] F) In Example 1 and Example 2, for the nozzle portion 8, “Fan Nozzle Chip: 1325 of Turn W Chip” of Seiwa Sangyo Co., Ltd. was used. The Turn W chip has an injection angle θ = 22.5 degrees to 30 degrees and has a fan-shaped injection range of the injection angle θ. In Example 1 and Example 2, the Turn W chip was arranged on the brush holder 1 in the same manner as described with reference to FIGS. 4 to 7.

[0083] <2> Method of Spray Test> A) In the spray test, a painting gun was connected to the turn W tip (nozzle part), and paint was sprayed onto the object to be painted at an injection angle θ from the turn W tip into the brush body H1. The painting gun used was the "Air Spray Gun: Top Gun TPG-1" manufactured by Seiwa Sangyo Co., Ltd. The paint used was "Bonflon Primer #630II (Registered Trademark: Bonflon / BONFLON)" manufactured by AGC Coating Co., Ltd. The spray volume (discharge volume) of the turn W nozzle was set to 570 (cc / min), the spray time T in Example 1 was 16.41 (seconds), and the injection time T in Example 2 was 18.93 (seconds). As the object to be painted, an iron plate of 60 (cm) × 60 (cm) was used. B) In Example 1 and Example 2, assuming the actual painting work, the paint was infiltrated and applied to the entire brush body H1 (each brush part) before the injection of the paint. C) In Example 1 and Example 2, a gap of 50 (cm) was left between one surface of the object to be painted (iron plate) and the tips 1a of the bristles of the first-layer (first-stage) brush part 1A, and the paint was sprayed onto the object to be painted (iron plate). The paint was sprayed over the entire one surface of the object to be painted (iron plate).

[0084] <3> Verification of the spray test By visual inspection, the deflection of the brush body H1 (each brush part) and the adhesion of the sprayed paint to the brush body (each brush part) were confirmed.

[0085] <4> Results (evaluation) of the spray test In the painting brush tools of Example 1 and Example 2, no deflection of the brush body (each brush part) was observed. In the painting brush tools of Example 1 and Example 2, almost no adhesion of the sprayed paint was observed. According to the results of the spray test, the brush parts 1A, 1B, 1C (or 1A, 1B) exhibit the function of holding the adjacent brush parts on the outer peripheral side of the annular body and suppressing the inward deflection (towards the injection center line ε side) of the brush body. It is recognized that the paint sprayed at an injection angle θ from the turn W tip was directly sprayed onto the object to be painted (iron plate) without contacting the brush body (each brush part). As a result, it has been demonstrated that the paint adhesion rate to the object to be painted can be improved.

Industrial Applicability

[0086] The present invention is optimal for spraying paint on an object to be painted.

Explanation of Reference Numerals

[0087] X1 Painting brush tool Y1 Painting brush Z Nozzle body 7 Nozzle holes PW Paint 1 Brush holder H1 Brush body CY Annular body OU Outer circumference (annular outer circumference) IN Inner circumference (annular inner circumference) 1A, 1B, 1C,... Brush parts θ Injection angle FA Injection range (range) L1, L2, L3,... Hair length

Claims

1. A paint brush tool comprising a paint brush, a nozzle body into which pressurized paint flows and which has nozzle holes for spraying the paint at a spraying angle, and is disposed on the paint brush. The paint brush has a hair implanting end, and a brush holder on which the nozzle body is disposed, is formed into an annular body bundling a plurality of hair materials, is attached to the brush holder surrounding the nozzle holes, and in the direction of the spraying center line of the spraying angle, each hair material has a hair length and extends from the hair implanting end, and a brush body, The nozzle body sprays the paint into the brush body at the spraying angle from the nozzle holes, The brush body has a plurality of brush portions which are arranged adjacent to each other between the outer periphery and the inner periphery of the annular body and are formed by bundling a plurality of hair materials into an annular shape, and the hair lengths of the hair materials are configured to be different between the respective brush portions, Each of the brush portions is formed with a shorter hair length of the hair material than that of the brush portion adjacent to it on the outer peripheral side of the annular body, The inner peripheral surface of each of the brush portions is located outside the spraying region of the paint sprayed at the spraying angle and is disposed surrounding the nozzle holes A paint brush tool characterized by the above.

2. The paint brush is provided with a reinforcing cylinder portion, The reinforcing cylinder portion is disposed in contact with the brush portion located at the innermost periphery between the outer periphery and the inner periphery of the annular body, is made shorter than the hair length of the brush portion located at the innermost periphery and extends from the hair implanting end into the brush body, The inner peripheral surface of the reinforcing cylinder portion is located outside the spraying region of the paint sprayed at the spraying angle and is disposed The paint brush tool according to claim 1, characterized by the above.

Images