Coating applicator

Abstract

To provide a coating applicator that has a foldable scattering prevention cover, thereby not being bulky when being carried or stored.SOLUTION: A coating applicator includes: a carriage 2 including wheels 4 and capable of travelling; a spray gun 8 installed to the carriage 2; a scattering prevention cover 10 covering over a working range of the spray gun 8 to prevent a coating material discharged from the spray gun 8 from being scattered; and a holding part for holding a shape of a framework 20. Removing the holding part can fold the framework.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an application device for applying waterproofing materials, paints, etc. to floors, road surfaces, roofs, rooftops, etc. [Background technology]

[0002] 2. Description of the Related Art Conventionally, as an apparatus for coating road surfaces and the like, there has been a waterproofing construction robot as disclosed in, for example, Japanese Patent Application Laid-Open No. 2004-202354. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-202354 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the waterproofing construction robot disclosed in Patent Document 1, as the device becomes larger, the paint splash prevention cover also becomes larger. This means that it takes up a significant portion of the truck bed during transportation. It also requires a large area when stored in a warehouse or the like. Even if the splash prevention cover is removed, it must be transported and stored in the same shape as when it was removed, which creates the same problem.

[0005] The present invention has been made in consideration of the above points, and aims to provide an application device that does not take up much space during transportation or storage by making the anti-scattering cover of the application device foldable. [Means for solving the problem]

[0006] The coating device of the present invention comprises: A cart equipped with wheels and capable of running; A spray gun provided on the carriage; a splash prevention cover that has a frame and is placed over the operating range of the spray gun to prevent the paint discharged from the spray gun from splashing; A holding portion that holds the shape of the framework, The frame is configured so that it can be folded by removing the holding portion.

[0007] A preferred example of the coating device of the present invention is The framework, A front upper frame that is provided at the front upper portion and extends in the left-right direction; A rear upper frame that is provided at the rear upper portion and extends in the left-right direction; A pair of left and right upper frames extending in the front-rear direction and provided at the left and right upper portions; A front lower frame that is provided at the front lower portion and extends in the left-right direction; A rear lower frame that is provided at the rear lower portion and extends in the left-right direction; A pair of left and right lower frames extending in the front-rear direction and provided at the left and right lower parts; A pair of front support columns extending vertically and provided at the front; A pair of rear support columns extending vertically and provided at the rear; a pair of front upper connecting portions connecting the ends of the front upper frame, the front ends of the left and right upper frames, and the upper ends of the front pillars; a pair of rear upper connecting portions connecting the ends of the rear upper frame, the rear ends of the left and right upper frames, and the upper ends of the rear pillars; a pair of front lower connecting portions connecting the ends of the front lower frame, the front ends of the left and right lower frames, and the lower ends of the front pillars; a pair of rear lower connecting portions connecting the ends of the rear lower frame, the rear ends of the left and right lower frames, and the lower ends of the rear pillars; The framework is configured such that, by removing the retaining portion, the front upper connecting portion, the rear upper connecting portion, the front lower connecting portion, and the rear lower connecting portion can be bent or extended to fold the framework.

[0008] According to these coating devices of the present invention, the framework of the splash prevention cover can be folded by removing the holding part, so that the coating device can be folded up into a small size and space can be saved when transporting or storing it.

[0009] According to a preferred embodiment of the coating device of the present invention, When the holding portion is removed, the frame is configured so that two diagonal corners on one side are bent and two diagonal corners on the other side are extended when viewed from the top, side, or back, allowing it to be folded.

[0010] According to a preferred embodiment of the coating device of the present invention, The holding portion is An upper holding portion that connects the front upper frame and the rear upper frame, or the pair of left and right upper frames, to fix them and maintain the shape of the framework; a lateral support portion that connects the front support and the rear support to fix the front support and maintain the shape of the framework; a front and rear holding portion that connects and fixes one or more of the front upper frame and the front lower frame, and the rear upper frame and the rear lower frame to maintain the shape of the framework; a lateral corner retaining portion that fixes the angle of one or more of the adjacent front upper frame and the left and right upper frame, the rear upper frame and the left and right upper frame, the front lower frame and the left and right lower frame, and the rear lower frame and the left and right lower frame at the corners of the framework to maintain the shape of the framework; a vertical corner retaining portion that fixes the angle of one or more of adjacent corners of the frame among the front support and the left and right upper frames, the front support and the left and right lower frames, the rear support and the left and right upper frames, and the rear support and the left and right lower frames, or the angle of one or more of the front support and the front upper frame, the front support and the front lower frame, the rear support and the rear upper frame, and the rear support and the rear lower frame, to maintain the shape of the frame; A brace provided diagonally on one or more of the top, side, front, and back surfaces of the frame; One or more of the following is true:

[0011] According to these preferred examples of the application device of the present invention, the frame is configured so as to be foldable into a substantially diamond shape, so that the structure of the frame can be simplified.

[0012] According to a preferred embodiment of the coating device of the present invention, The left and right upper frames and the left and right lower frames are provided with bendable left and right bending portions at intermediate portions in the longitudinal direction, By removing the holding portions, the left and right upper frames and the left and right lower frames are bent horizontally, and the front-to-rear dimensions of the framework are compressed so that it can be folded.

[0013] According to a preferred embodiment of the coating device of the present invention, The holding portion is A bending holding portion that restricts bending of the left and right bending portions; An upper holding portion that connects the front upper frame and the rear upper frame, or the pair of left and right upper frames, to fix them and maintain the shape of the framework; a lateral support portion that connects the front support and the rear support to fix the front support and maintain the shape of the framework; a lateral corner retaining portion that fixes the angle of one or more of the adjacent front upper frame and the left and right upper frame, the rear upper frame and the left and right upper frame, the front lower frame and the left and right lower frame, and the rear lower frame and the left and right lower frame at the corners of the framework to maintain the shape of the framework; A brace is provided diagonally on one or more of the top and side surfaces of the frame; One or more of the following is true:

[0014] According to a preferred embodiment of the coating device of the present invention, At the bent end portions located in front of and behind the left and right bent portions, vertical intermediate supports are provided which are provided across the left and right upper frames and the left and right lower frames.

[0015] According to a preferred embodiment of the coating device of the present invention, The left and right upper frames and the left and right lower frames are provided with bendable upper and lower bending portions at intermediate portions in the longitudinal direction, By removing the holding parts, the left and right upper frames and the left and right lower frames are bent in the vertical direction, and the front-to-rear dimensions of the framework are compressed so that it can be folded.

[0016] According to a preferred embodiment of the coating device of the present invention, The holding portion is a bending holding portion that restricts bending of the upper and lower bending portions; a lateral support portion that connects the front support and the rear support to fix the front support and maintain the shape of the framework; a vertical corner retaining portion that fixes the angle of one or more of the adjacent angles between the front support and the left and right upper frames, the front support and the left and right lower frames, the rear support and the left and right upper frames, and the rear support and the left and right lower frames at the corners of the frame to maintain the shape of the frame; A brace is provided diagonally on one or more of the top and side surfaces of the frame; One or more of the following is true:

[0017] According to these preferred examples of the application device of the present invention, the framework is folded by bending the left and right bending portions, so that the framework is compressed in the front-rear direction.

[0018] According to a preferred embodiment of the coating device of the present invention, A bendable support column bending portion is provided at a longitudinal intermediate portion of the front support column and the rear support column, By removing the holding portion, the front and rear pillars are bent in the left-right direction, and the vertical dimension of the framework is compressed so that it can be folded.

[0019] According to a preferred embodiment of the coating device of the present invention, The holding portion is a front and rear holding portion that connects and fixes one or more of the front upper frame and the front lower frame, and the rear upper frame and the rear lower frame to maintain the shape of the framework; A bending retention portion that restricts bending of the support bending portion; a vertical corner retaining portion that fixes the angle of one or more of the adjacent front support and front upper frame, the front support and front lower frame, the rear support and rear upper frame, and the rear support and rear lower frame at the corners of the frame to maintain the shape of the frame; A brace provided diagonally on one or more of the side, front, and back surfaces of the frame; One or more of the following is true:

[0020] According to these preferred examples of the application device of the present invention, the front and rear supports are bent to fold the frame, so that the frame is compressed in the vertical direction.

[0021] According to a preferred embodiment of the coating device of the present invention, a separation portion at an intermediate portion of one of the front upper frame and the front lower frame, or the rear upper frame and the rear lower frame, which allows the front upper frame and the front lower frame, or the rear upper frame and the rear lower frame, to be separated at the intermediate portion; a front-rear bending portion that can bend the front upper frame and the front lower frame, or the rear upper frame and the rear lower frame, in a direction in which the separation portion moves away from each other, at an intermediate portion of the other of the front upper frame and the front lower frame, or the rear upper frame and the rear lower frame; The front upper connecting portion and the front lower connecting portion, or the rear upper connecting portion and the rear lower connecting portion on the side of the detachment portion are configured to be extended in a horizontal direction, The front upper connecting portion and the front lower connecting portion, or the rear upper connecting portion and the rear lower connecting portion on the side of the front-rear bending portion are configured to be bent, The framework is configured to be foldable by detaching the detachment portion and bending the front and rear bending portions while extending the front upper connecting portion and the front lower connecting portion, or the rear upper connecting portion and the rear lower connecting portion, on the side of the detachment portion, and bending the front upper connecting portion and the front lower connecting portion, or the rear upper connecting portion and the rear lower connecting portion on the side of the front and rear bending portions.

[0022] According to a preferred embodiment of the coating device of the present invention, a separation portion at an intermediate portion of one of the front upper frame and the front lower frame, or the rear upper frame and the rear lower frame, which allows the front upper frame and the front lower frame, or the rear upper frame and the rear lower frame, to be separated at the intermediate portion; a front-rear bending portion that can bend the front upper frame and the front lower frame, or the rear upper frame and the rear lower frame, in a direction in which the separation portion moves away from each other, at an intermediate portion of the other of the front upper frame and the front lower frame, or the rear upper frame and the rear lower frame; The front upper connecting portion and the front lower connecting portion, or the rear upper connecting portion and the rear lower connecting portion on the side of the detachment portion are configured to be bent in a horizontal direction, The front upper connecting portion and the front lower connecting portion, or the rear upper connecting portion and the rear lower connecting portion on the side of the front-rear bending portion are configured to be extended, The framework is configured to be foldable by detaching the detachment portion and bending the front and rear bending portions while bending the front upper connecting portion and the front lower connecting portion, or the rear upper connecting portion and the rear lower connecting portion on the detachment portion side, and extending the front upper connecting portion and the front lower connecting portion, or the rear upper connecting portion and the rear lower connecting portion on the front and rear bending portion side.

[0023] According to a preferred embodiment of the coating device of the present invention, The holding portion is A fastening portion that restricts the detachment of the detachment portion; A bending retention portion that restricts bending of the front and rear bending portion; An upper holding portion that connects the front upper frame and the rear upper frame, or the pair of left and right upper frames, to fix them and maintain the shape of the framework; a lateral corner retaining portion that fixes the angle of one or more of the adjacent front upper frame and the left and right upper frame, the rear upper frame and the left and right upper frame, the front lower frame and the left and right lower frame, and the rear lower frame and the left and right lower frame at the corners of the framework to maintain the shape of the framework; A brace provided diagonally on the upper surface of the framework; One or more of the following is true:

[0024] According to the preferred examples of the application device of the present invention, the frame is further folded after it has been formed, for example, in a "mountain" shape in plan view by the separation portion and the front and rear bending portion. This allows the frame to be folded into a smaller size. Effect of the Invention

[0025] As described above, according to the coating device of the present invention, the splash prevention cover can be folded, so that the coating device does not become bulky during transportation or storage. [Brief description of the drawings]

[0026] [Figure 1] FIG. 1 is a plan view of a coating apparatus according to an embodiment of the present invention. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] 1A and 1B are diagrams illustrating a framework that can be folded into a generally diamond shape in a plan view. [Diagram 5] FIG. [Figure 6] 13A and 13B are diagrams illustrating another example of the upper holding portion. [Figure 7] FIG. 13 is a diagram illustrating a lateral corner holding portion. [Figure 8] 5 is a diagram illustrating the folded state of the framework shown in FIG. 4. FIG. [Figure 9] FIG. 13 is a diagram illustrating a foldable framework whose front-to-rear dimensions are compressed. [Figure 10] FIG. 13 is a diagram illustrating a bending holding portion. [Figure 11] 10 is a diagram illustrating the folded state of the framework shown in FIG. 9. FIG. [Figure 12] 13A and 13B are diagrams illustrating another framework that can be folded by compressing the dimensions in the front-rear direction. [Figure 13] 13A and 13B are diagrams illustrating a vertical corner holding portion. [Figure 14] 13 is a diagram illustrating the folded state of the framework shown in FIG. 12. FIG. [Figure 15] FIG. 13 is a diagram illustrating a foldable framework in which the vertical dimensions are compressed. [Figure 16] 13 is a diagram illustrating a framework having a detachment portion and front and rear bending portions. FIG. [Figure 17] 17 is a diagram illustrating the folded state of the framework shown in FIG. 16. FIG. [Figure 18] 17A to 17C are diagrams illustrating the folded state of the framework shown in FIG. 16 and other examples of frameworks. [Figure 19] 13A to 13C are diagrams illustrating another example of a framework having a detachment portion and front and rear bending portions. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Hereinafter, an embodiment of a coating apparatus 1 according to the present invention will be described in detail with reference to the accompanying drawings. First, the coating apparatus 1 will be described in its entirety with reference to Figs.

[0028] The coating device 1 of this embodiment includes a cart 2, a left-right reciprocating mechanism 5, a spray gun 8, a splash prevention cover 10, and a holding part (reference numerals 50a, 50b, 55, etc. in FIG. 4(A)). The cart 2 includes a drive part including a motor 3 and wheels 4, and enables the coating device 1 to travel on a floor, a road surface, a roof, a rooftop, etc. The left-right reciprocating mechanism 5 reciprocates the slider part 6 in the left-right direction as shown by the arrow a in FIG. 1. The left-right reciprocating mechanism 5 includes an actuator (not shown) that reciprocates the slider part 6 to the operating end of the slide rail 7 or to an arbitrary position. The spray gun 8 is attached to the slider part 6 and reciprocates in the left-right direction together with the slider part 6. The spray gun 8 also discharges the liquid or paint sent from a pressure-feeding device (not shown) through a liquid piping 9 from its tip and sprays it onto the target object, such as a floor, a road surface, a roof, or a rooftop. The left and right reciprocating mechanism 5 and the slider portion 6 are not essential components, and the spray gun 8 may be fixed, or may be swung like a pendulum at a fixed location.

[0029] The splash prevention cover 10 is placed over the operating range of the spray gun 8 to prevent the liquid agent or paint discharged from the spray gun 8 from splashing. The splash prevention cover 10 is configured to be detachable from the dolly 2 or the like by members such as brackets and bolts (not shown). The splash prevention cover 10 is configured to include a framework 20 and a sheet member 11 attached to the framework 20. For example, nonwoven fabric, vinyl sheet, fine mesh material, etc. are used as the sheet member 11. Alternatively, a plate-shaped member may be used as the sheet member 11. In addition, when folding the framework 20 described later, the framework 20 may be folded in a state where it is attached to the application device 1, or may be folded in a state where it is removed from the application device 1. In addition, the framework 20 may be folded in a state where the sheet member 10 is attached to the framework 20, or may be folded in a state where the sheet member 10 is removed.

[0030] The framework 20 constitutes the framework of the shatterproof cover 10 and includes frame materials and connecting members. The frame materials include a front upper frame 30, a rear upper frame 31, left and right upper frames 32, a front lower frame 33, a rear lower frame 34, left and right lower frames 35, a front support 36, and a rear support 37. The front upper frame 30 is a frame material that is provided in the front upper part of the framework 20 in the left and right direction. The rear upper frame 31 is a frame material that is provided in the rear upper part of the framework 20 in the left and right direction. The left and right upper frames 32 are a pair of frame materials that are provided in the front and rear direction of the framework 20 in the left and right direction. The front lower frame 33 is a frame material that is provided in the front lower part of the framework 20 in the left and right direction. The rear lower frame 34 is a frame material that is provided in the rear lower part of the framework 20 in the left and right direction. The left and right lower frames 35 are a pair of frame materials that are provided in the front and rear direction of the framework 20 in the left and right direction. The front support columns 36 are a pair of frame members that are provided at the front of the framework 20 and extend vertically across the framework 20. The rear support columns 37 are a pair of frame members that are provided at the rear of the framework 20 and extend vertically across the framework 20.

[0031] The connecting members connect the frame members together, and the locations where the connecting members are provided are configured to bend or extend like joints, and for example, members such as hinges 44 are used (see the enlarged view of FIG. 7). The connecting members include a front upper connecting portion 40, a rear upper connecting portion 41, a front lower connecting portion 42, and a rear lower connecting portion 43. The front upper connecting portions 40 are a pair of connecting members that connect the left and right ends of the front upper frame 30, the front ends of the left and right upper frames 32, and the upper ends of the front pillars 36. The rear upper connecting portions 41 are a pair of connecting members that connect the left and right ends of the rear upper frame 31, the rear ends of the left and right upper frames 32, and the upper ends of the rear pillars 37. The front lower connecting portions 42 are a pair of connecting members that connect the left and right ends of the front lower frame 33, the front ends of the left and right lower frames 35, and the lower ends of the front pillars 36. The rear-lower connecting parts 43 are a pair of connecting members that connect the left and right ends of the rear lower frame 34, the rear ends of the left and right lower frames 35, and the lower ends of the rear pillars 37. Depending on the direction in which these connecting members are bent or extended, some of the frame materials may be fixed together by a method such as welding, and only some of the frame materials may be bent or extended. In addition, the position and orientation of the attached hinges 44 differ depending on the direction in which the connecting members are bent or extended.

[0032] The retaining portion is a member that retains the shape of the framework 20. That is, when the retaining portion is attached to the framework 20, the framework 20 is retained in a predetermined shape, and when the retaining portion is removed, the framework 20 becomes foldable. In this embodiment, the predetermined shape of the framework 20 is an approximately rectangular parallelepiped, but is not limited to this as long as the framework 20 can be unfolded and folded. For example, the framework 20 can be approximately trapezoidal in plan view, side view, or back view. In addition, the frame material does not need to be straight, and may be curved or bent, or may have a divided structure.

[0033] [First embodiment] The framework 20a and the holding portion will be described as an embodiment with reference to Fig. 4 to Fig. 8. In this embodiment, the framework 20a is configured to be folded into a substantially diamond shape in a plan view. Fig. 4(A) is a plan view of the framework 20a, Fig. 4(B) is a rear view of the framework 20a, and Fig. 4(C) is a side view of the framework 20a.

[0034] As shown in Figs. 4(A) to (C), when the framework 20a is assembled into a substantially rectangular parallelepiped, the frame material is held by the holding parts so that the shape of the framework 20a does not collapse. In this embodiment, the upper holding parts 50a, 50b, the horizontal corner holding parts 55, and the brace 90 are used as the holding parts. However, it is not necessary to use all of the upper holding parts 50a, 50b, the horizontal corner holding parts 55, and the brace 90, and one or more of them may be used as long as the shape of the framework 20a can be maintained. Furthermore, instead of the horizontal corner holding parts 55, the vertical corner holding parts 70 shown in Fig. 13 can be attached with a different orientation to maintain the shape of the framework 20a. Furthermore, it is not necessary to provide the horizontal corner holding parts 55 and the vertical corner holding parts 70 at all corners of the framework 20a, and the number of them can be minimized as long as the shape of the framework 20a can be maintained (this is also true for other embodiments).

[0035] The upper holding parts 50a, 50b are used to fix the front upper frame 30 and the rear upper frame 31, or to connect the pair of left and right upper frames 32 together, thereby maintaining the shape of the framework 20a. In Figs. 4(A) to (C), the upper holding part 50a connecting the front upper frame 30 and the rear upper frame 31 is shown by a solid line, and the upper holding part 50b connecting the pair of left and right upper frames 32 is shown by a dashed line. Only one of these two upper holding parts 50a, 50b may be used, or both may be used. When both upper holding parts 50a, 50b are used, these upper holding parts 50a, 50b may be combined integrally in a roughly cross shape in a plan view.

[0036] The upper holding part 50a will be described in detail with reference to Figs. 5(A) and (B). The upper holding part 50a shown in Fig. 5(A) includes a pair of frame material fitting parts 51a having a substantially U-shaped cross section that are fitted to the front upper frame 30 and the rear upper frame 31 (a pair of left and right upper frames 32 in the upper holding part 50b), and a bridging member 53a that connects the frame material fitting parts 51a together, and is substantially I-shaped in plan view. The frame material is fixed by the frame material fitting parts 51a and the bridging member 53a, and the shape of the framework 20a is maintained. Furthermore, the upper holding part 50c shown in Fig. 5(B) can also be used. In this upper holding part 50c, the bridging member 53c is provided on the upper surface of the frame material fitting parts 51c, and the frame material fitting parts 51c can be fixed to the frame material by a knurled knob 80 or the like. Furthermore, the bridging members 53a and 53c shown in FIGS. 5(A) and 5(B) can also function as frames when attaching the sheet member 11 or the plate-like member to the framework 20a.

[0037] Next, referring to FIG. 6(A), another example of the upper retaining portion 50d will be described. The upper retaining portion 50d includes a bridge fitting portion 52 having a substantially U-shaped cross section, which is provided to the front upper frame 30 and the rear upper frame 31 (a pair of left and right upper frames 32 in the upper retaining portion 50b) by welding, bolting, or other methods, and a bridge member 53d fitted to the bridge fitting portion 52. The upper retaining portion 50e shown in FIG. 6(B) includes four frame member fitting portions 51e having a substantially U-shaped cross section, which are connected to each other by two crossing bridge members 53e. As a result, the upper retaining portion 50e is substantially X-shaped in plan view. In these upper retaining portions 50d, 50e, the bridge members 53d, 53e can also play the role of a frame when attaching the sheet member 11 or the plate-like member to the framework 20a.

[0038] Returning to Figures 4(A) to (C), the horizontal corner retaining portions 55 fix the angles between adjacent front upper frame 30 and left and right upper frames 32, rear upper frame 31 and left and right upper frames 32, front lower frame 33 and left and right lower frames 35, and rear lower frame 34 and left and right lower frames 35 at the corners of the framework 20a, thereby maintaining the shape of the framework 20a.

[0039] The details of the lateral corner holding portion 55 will be described with reference to FIG. 7. The lateral corner holding portion 55 is formed by joining two frame material fitting portions 56, each having a substantially U-shaped cross section, in a substantially L-shape with a 90-degree angle from each other in a plan view. In this embodiment, a reinforcing rib 57 is provided to reinforce the joint between the two frame material fitting portions 56. These two frame material fitting portions 56 are fitted into the frame material near the connecting member, which is the corner of the framework 20a. In this embodiment, the angle between the frame materials is kept at 90 degrees to maintain the shape of the framework 20a. As a modified example of the lateral corner holding portion 55, the distance between the adjacent frame material fitting portions 56 can be increased to make the reinforcing rib 57 larger, or a rod-shaped member or a strip can be used instead of the reinforcing rib 57. In such a case, it is preferable that the modified lateral corner holding portion is used in a place other than the bottom surface of the framework 20a so as not to interfere with the application of paint or the like discharged from the spray gun 8. The enlarged view in the figure shows a hinge 44, which is an example of a connecting member, and the illustration of the hinge 44 is omitted in the other figures.

[0040] Depending on the shape of the framework, the lateral corner holders 55 can be attached to the framework in a different orientation to fix the angles of the front upper frame 30, rear upper frame 31, left and right upper frame 32, front lower frame 33, rear lower frame 34, and left and right lower frame 35, which are connected to the front support 36 and rear support 37, respectively, to maintain the shape of the framework. In such a case, it is preferable to fix the lateral corner holders 55 with knurled knobs 80 or the like to prevent them from falling off.

[0041] Returning to Figs. 4(A)-(C), the brace 90 will be described. In this figure, the brace 90 is represented by a broken line. The brace 90 is a reinforcing member provided diagonally near the corners of the frame material formed in a square shape by the front upper frame 30, the rear upper frame 31, and the left and right upper frames 32. The brace 90 in this embodiment is provided on the upper surface of the framework 20a, and connects the diagonally located front support 36 and rear support 37, or the front upper connector 40 and the rear upper connector 41. In the embodiment shown in Fig. 4(A), both ends of the brace 90 are fastened to the framework 20a by knurled knobs 80. Although not shown, the brace 90 can also be provided on the side, front, and back of the framework 20a depending on the embodiment. Note that the upper surface, side surface, front surface, and back surface here do not mean the surfaces of each frame material, but the surfaces of the framework 20 as a whole.

[0042] When the brace 90 is provided on the side, the brace 90 is provided diagonally on the frame material formed in a square shape by the left and right upper frames 32, the left and right lower frames 35, the front support 36, and the rear support 37. When the brace 90 is provided on the front, the brace 90 is provided diagonally on the frame material formed in a square shape by the front upper frame 30, the front lower frame 33, and the pair of front support columns 36. When the brace 90 is provided on the rear, the brace 90 is provided diagonally on the frame material formed in a square shape by the rear upper frame 31, the rear lower frame 34, and the pair of rear support columns 37. This brace 90 is used in the other embodiments in the same way.

[0043] Next, referring to FIG. 8, a method of folding the framework 20a of this embodiment will be described. FIG. 8(A) is a plan view of the framework 20a before folding, FIG. 8(B) is a plan view of the framework 20a in the middle of folding, and FIG. 8(C) is a plan view of the framework 20a in the folded state. First, the upper holding parts 50a, 50b and the lateral corner holding parts 55 are removed from the state shown in FIG. 4(A) to (C) in which the framework 20a is attached, to obtain the state shown in FIG. 8(A). Next, as shown in FIG. 8(B), two corners on one diagonal are bent and two corners on the other diagonal are extended so that the framework 20a has a substantially diamond shape in plan view. Specifically, the connecting members 40, 41 at the top right and bottom left of the figure are extended, while the connecting members 40, 41 at the top left and bottom right of the figure are bent (connecting members 42, 43 not visible in the figure are also extended or bent. The same applies to other embodiments). Then, the work is completed by folding it as shown in Figure 8(C). Note that depending on the state of the holding parts and connecting members, it may not be possible to fold it completely as shown in Figure 8(C), and it may end up in a state somewhere between Figures 8(B) and 8(C) (the same applies to other embodiments).

[0044] In the above embodiment, the framework 20a is folded to have a substantially diamond shape in plan view, but the framework 20a may be configured to be foldable to have a substantially diamond shape in side or back view. In this case, one or more of the horizontal holding parts 64 (see FIG. 9(B)), the front and rear holding parts 65 (see FIG. 15(A)), the vertical corner holding parts 70 (see FIG. 13), and the braces 90 may be used as the holding parts. The horizontal holding parts 64 (see FIG. 9(B)) are for fixing the front support 36 and the rear support 37 by connecting them together to hold the shape of the framework. The front and rear holding parts 65 (see FIG. 15(A)) are for fixing the front upper frame 30 and the front lower frame 33, and the rear upper frame 31 and the rear lower frame 34 by connecting them together to hold the shape of the framework 20a. The vertical corner retainers 70 (see FIG. 13) maintain the shape of the framework by fixing the angles between the left and right upper frames 32, left and right lower frames 35, front upper frame 30, and front lower frame 33 that are connected to the front pillars 36 at the corners of the framework 20a, and the angles between the left and right upper frames 32, left and right lower frames 35, rear upper frame 31, and rear lower frame 34 that are connected to the rear pillars 37. The braces 90 have already been explained, so explanation will be omitted.

[0045] [Second embodiment] Another embodiment of the framework 20b and the holding portion will be described with reference to Fig. 9 to Fig. 11. In this embodiment, the left and right upper frames 32 and the left and right lower frames 35 among the frame members are bent horizontally and inwardly of the framework 20b at their intermediate portions, and the framework 20b is folded while its front-rear dimensions are compressed. Fig. 9(A) is a plan view of the framework 20b, and Fig. 9(B) is a side view of the framework 20b. In Fig. 9(A) and (B), the holding portions 60a and 64 are indicated by dashed lines to make the drawings easier to see.

[0046] The framework 20b of this embodiment includes left and right bending portions 21 and a vertical intermediate support 22. The left and right bending portions 21 are bendable portions provided in the middle of the length direction of the left and right upper frames 32 and the left and right lower frames 35. The left and right bending portions 21 are formed by dividing the left and right upper frames 32 and the left and right lower frames 35 at their middle portions and connecting them with members such as hinges, and are configured to be bendable in the horizontal direction and inward of the framework 20b. The vertical intermediate support 22 is a support provided across the left and right upper frames 32 and the left and right lower frames 35 at the bending end portions 28b located in front of and behind the left and right bending portions 21. The vertical intermediate support 22 is not an essential component, but if provided, it can reinforce the framework 20b and can be used as a frame when attaching the sheet member 11 or the like to the framework 20b.

[0047] The retaining parts of this embodiment include a bending retaining part 60a, a horizontal retaining part 64, and upper retaining parts 50a, 50b, 50c, and 50d (not shown), a horizontal corner retaining part 55, and a brace 90. The bending retaining part 60a regulates the bending of the left and right bending parts 21. The horizontal retaining part 64 connects the front support 36 and the rear support 37 to fix and retain the shape of the framework 20b, and is attached by changing the orientation of the upper support part 50c shown in FIG. 5(B). The upper support parts 50a, 50b, 50c, and 50d, the horizontal corner retaining part 55, and the brace 90 are the same as those described in the first embodiment. In the framework 20b of this embodiment, the brace 90 is provided on one or more of the upper surface and side surface of the framework 20b. However, it is not necessary to use all of these retaining parts, and as long as the shape of the framework 20b can be maintained, it is possible to use only one or more of these retaining parts (similar to other embodiments).

[0048] The bending retaining portion 60a will be described in detail with reference to Figs. 10(A) and 10(B). Fig. 10(A) shows the left and right bending portions 21 in a free state, and Fig. 10(B) shows the left and right bending portions 21 in a restricted state of bending (or extension). The bending retaining portion 60a in this embodiment is a member having a substantially U-shaped cross section, and has an elongated hole 61 on its upper surface. In addition, one female screw hole (not shown) is provided near the left and right bending portions 21. A knurled knob 80 passing through the elongated hole 61 is screwed into the female screw hole, and the bending retaining portion 60a is attached to the left and right upper frames 32 and the left and right lower frames 35.

[0049] A method of using this bending retaining portion 60a will now be described. In the state shown in Fig. 10(A), the bending retaining portion 60a does not cover the left and right bending portion 21, and the left and right bending portion 21 can be bent freely. From this state, the knurled knob 80 is loosened and the bending retaining portion 60a is slid in the direction of the arrow to the state shown in Fig. 10(B). Then, the bending retaining portion 60a covers the left and right bending portion 21, restricting the movement of the left and right bending portion 21 and making it impossible to bend. If the knurled knob 80 is tightened in this state, the bending retaining portion 60a is fixed.

[0050] Next, referring to FIG. 10(C), a bending holding portion 60b according to another embodiment will be described. The bending holding portion 60b of this embodiment is a member having a substantially U-shaped cross section, and has two holes 63 on its upper surface. In addition, two female screw holes 62 corresponding to the hole 63 of the bending holding portion 60b are also provided in the left and right upper frame 32 and the left and right lower frame 35, sandwiching the left and right bending portion 21. To restrict the left and right bending portion 21, the bending holding portion 60b is placed over the left and right bending portion 21 in a straight state, and the hole 63 of the bending holding portion 60b and the female screw hole 62 are overlapped. Next, two knurled knobs 80 are screwed into the female screw holes 62 from above the bending holding portion 60b and tightened.

[0051] Next, referring to FIG. 11, a folding method of the framework 20b of this embodiment will be described. FIG. 11(A) is a plan view of the framework 20b before folding, FIG. 11(B) is a plan view of the framework 20b in the middle of folding, and FIG. 11(C) is a plan view of the framework 20b in the folded state. First, the bending holding portion 60a and the lateral holding portion 64 (or the upper holding portions 50a, 50b and the lateral corner holding portions 55, not shown) are removed from the state shown in FIG. 9(A)(B) to obtain the state shown in FIG. 11(A). Next, as shown in FIG. 11(B), the left and right bending portions 21 are bent horizontally and inwardly so that the dimension of the framework 20b in the front-rear direction is compressed, while the connecting members 40, 41 at the four corners of the figure are bent. Then, the work is completed by folding it as shown in FIG. 11(C).

[0052] [Third embodiment] With reference to Fig. 12 to Fig. 14, a framework 20c and a holding portion according to another embodiment will be described. In this embodiment, the left and right upper frames 32 of the frame material are bent downward at their intermediate portions, and the left and right lower frames 35 are bent upward at their intermediate portions, so that the dimensions of the framework 20c in the front-rear direction are compressed and folded. Fig. 12(A) is a plan view of the framework 20c, and Fig. 12(B) is a side view of the framework 20c. In Fig. 12(A) and (B), the holding portions 60b and 70 are indicated by dashed lines to make the drawings easier to see.

[0053] The framework 20c of this embodiment includes the upper and lower bent portions 23 and the horizontal intermediate support 24. The upper and lower bent portions 23 are bendable portions provided in the middle of the length direction of the upper and lower frames 32 and 35. The upper and lower frames 32 and 35 are divided at their middle portions and connected by a member such as a hinge to form the upper and lower bent portions 23. The upper and lower frames 32 are configured to be bendable downward, and the lower and upper frames 35 are configured to be bendable upward. The horizontal intermediate support 24 is a support provided across the pair of upper and lower frames 32 at the bent end portions 28c located in front of and behind the upper and lower bent portions 23 provided on the upper and lower frames 32. The horizontal intermediate support 24 is not an essential component, but when provided, it reinforces the framework 20c and can be used as a frame when attaching the sheet member 11 or the like to the framework 20c.

[0054] The retaining parts of this embodiment include a bending retaining part 60b, a vertical corner retaining part 70, and a horizontal retaining part 64 and a brace 90 (not shown). The bending retaining part 60b regulates the bending of the upper and lower bending parts 23, and is attached to the side of the upper and lower bending parts 23 in a horizontal orientation as shown in FIG. 10(C). The vertical corner retaining part 70 fixes the angle between the frame members at the corners of the framework 20c. The horizontal retaining part 64 and the brace 90 are the same as those described in the second and first embodiments. Here, the brace 90 is also provided on one or more of the upper and side surfaces of the framework 20c. The upper retaining parts 50a, 50b, and 50c described in the first embodiment can also be used. Instead of the vertical corner retaining part 70, the horizontal corner retaining part 55 shown in FIG. 7 can be attached with a different orientation to maintain the shape of the framework 20c.

[0055] The vertical corner holding part 70 will be described in detail with reference to Fig. 13. The vertical corner holding part 70 includes a band-shaped corner contact part 71 bent into a substantially L-shape in side view, and a side rib 72 that reinforces the corner contact part 71. Each side of the corner contact part 71 is provided with a hole 73, through which a knurled knob 80 passes. Furthermore, the frame material is provided with a female screw hole 62 at a position corresponding to the hole 73 of the corner contact part 71. The vertical corner holding part 70 is fixed by screwing the knurled knob 80 into the female screw hole 62, and the angle between adjacent frame materials is fixed.

[0056] The vertical corner holder 70 in Fig. 13 fixes the angles between the upper end of the front support 36 and the left and right upper frames 32, the lower end of the front support 36 and the left and right lower frames 35, the upper end of the rear support 37 and the left and right upper frames 32, and the lower end of the rear support 37 and the left and right lower frames 35 at the corners of the frame to maintain the shape of the frame. However, depending on the shape of the frame, the orientation of the vertical corner holder 70 may be changed to fix the angles between the upper end of the front support 36 and the front upper frame 30, the lower end of the front support 36 and the front lower frame 33, the upper end of the rear support 37 and the rear upper frame 31, and the lower end of the rear support 37 and the rear lower frame 34. Furthermore, the orientation of the vertical corner holder 70 may be changed to use it as a substitute for the horizontal corner holder 55 shown in Fig. 7.

[0057] Next, referring to Fig. 14(A) to (C), a folding method of the framework 20c of this embodiment will be described. Fig. 14(A) is a side view of the framework 20c before folding, Fig. 14(B) is a side view of the framework 20c in the middle of folding, and Fig. 14(C) is a side view of the framework 20c in the folded state. First, the bending holding portion 60b and the vertical corner holding portion 70 (or the horizontal holding portion 64, not shown) are removed from the state shown in Fig. 12(A) and (B) to obtain the state shown in Fig. 14(A). Next, as shown in Fig. 14(B), the upper and lower bending portions 23 are bent while the connecting members 40, 41, 42, and 43 at the four corners are bent so that the dimension of the framework 20c in the front-rear direction is compressed. Then, the work is completed by folding it as shown in Fig. 14(C). Furthermore, as shown in FIG. 14(C), casters 83 may be provided on the bottom of the framework 20c to facilitate folding when the framework 20c is removed from the application device 1 (this is also true for other embodiments).

[0058] [Fourth embodiment] With reference to Fig. 15, a framework 20d and a holding portion according to another embodiment will be described. In this embodiment, the front support 36 and the rear support 37 among the frame members are bent inwardly and left-rightward of the framework 20d at their intermediate portions, and the framework 20d is folded while its vertical dimension is compressed. Figs. 15(A) to (C) are all rear views of the framework 20d. In Fig. 15(A), the holding portions 60b, 65, and 70 are indicated by dashed lines, and in Figs. 15(B) and (C), the holding portions are omitted.

[0059] The frame 20d of this embodiment includes a support bend section 25. The support bend section 25 is a bendable portion provided in the middle of the length direction of the front support 36 and the rear support 37. The support bend section 25 is formed by dividing the front support 36 and the rear support 37 at their middle parts and connecting them with a member such as a hinge, and both the front support 36 and the rear support 37 are configured to be bendable inward and left and right directions of the frame 20d. Note that the frame 20d of this embodiment can also include an intermediate support in which the vertical intermediate support 22 described in the second embodiment is turned horizontally, near the support bend section 25. In this case, the intermediate support is provided across the front support 36 and the rear support 37.

[0060] The holding parts of this embodiment include the front and rear holding parts 65, the bent holding parts 60b, the vertical corner holding parts 70, and the brace 90 (not shown). The front and rear holding parts 65 are fixed by connecting one or more of the front upper frame 30 and the front lower frame 33, the rear upper frame 31 and the rear lower frame 34, and hold the shape of the framework 20d. The configuration of the front and rear holding parts 65 is the same as the upper holding parts 50a, 50c described in the first embodiment and the horizontal holding part 64 described in the second embodiment, and these holding parts are attached to the front upper frame 30 and the front lower frame 33, and the rear upper frame 31 and the rear lower frame 34 with their orientations in the up and down direction. In addition, a knurled knob 80 is appropriately added to prevent the frame 20d from falling off. The bent holding parts 60b and the vertical corner holding parts 70 are the same as those described in the third embodiment. The brace 90 is the same as that described in the first embodiment. In the framework 20d of this embodiment, the braces 90 are provided diagonally on one or more of the side, front, and back surfaces of the framework 20d.

[0061] Next, a method of folding the framework 20d of this embodiment will be described with reference to Figs. 15(A) to (C). Fig. 15(A) is a rear view of the framework 20d before folding, Fig. 15(B) is a rear view of the framework 20d in the middle of folding, and Fig. 15(C) is a rear view of the framework 20d in the folded state. First, the front and rear holding parts 65, the bending holding parts 60b, and the vertical corner holding parts 70 are removed from the state shown in Fig. 15(A). Next, as shown in Fig. 15(B), the connecting members 41 and 43 at the four corners are bent while bending the support bending parts 25 so that the vertical dimension of the framework 20d is compressed. Then, the work is completed by folding it to the state shown in Fig. 15(C).

[0062] [Fifth embodiment] Another embodiment of the framework 20e and the holding parts will be described with reference to Figs. 16 to 18. In this embodiment, a part of the frame material is cut off so that the framework 20e can be folded into a smaller size. Figs. 16(A) and (B) are plan views of the framework 20e. In Fig. 16(A), the holding parts 50a, 50b, 55, and 60b are shown by dashed lines, and the holding parts are omitted in the other figures.

[0063] The framework 20e of this embodiment includes a separation portion 26 and a front-rear bending portion 27. The separation portion 26 is provided at a middle portion in the length direction of one of the front upper frame 30 and the front lower frame 33, or the rear upper frame 31 and the rear lower frame 34, so that the front upper frame 30 and the front lower frame 33, or the rear upper frame 31 and the rear lower frame 34, can be separated at the middle portion. The front-rear bending portion 27 is provided at a middle portion in the length direction of the other of the front upper frame 30 and the front lower frame 33, or the rear upper frame 31 and the rear lower frame 34, so that the front upper frame 30 and the front lower frame 33, or the rear upper frame 31 and the rear lower frame 34, can be bent in a direction in which the separation portion 26 moves away from each other. In this embodiment, the separation portion 26 is provided at the front upper frame 30 and the front lower frame 33, and the front-rear bending portion 27 is provided at the rear upper frame 31 and the rear lower frame 34.

[0064] In addition, the front upper connecting portion 40 and the front lower connecting portion 42, or the rear upper connecting portion 41 and the rear lower connecting portion 43 on the side of the separation portion 26 are configured to be stretched in the horizontal direction. In this embodiment, the front upper connecting portion 40 and the front lower connecting portion 42, which are the side where the separation portion 26 is provided, are configured to be extendable. Furthermore, the front upper connecting portion 40 and the front lower connecting portion 42, or the rear upper connecting portion 41 and the rear lower connecting portion 43, on the side of the front-rear bending portion 27, are configured to be bent. In this embodiment, the rear upper connecting portion 41 and the rear lower connecting portion 43, which are the side where the front-rear bending portion 27 is provided, are configured to be bent. For the positions of the front lower connecting portion 42 and the rear lower connecting portion 43, please refer to FIG. 12(B), for example.

[0065] The retaining portion of this embodiment includes a fastening retaining portion 60b, a bending retaining portion 60b, upper retaining portions 50a, 50b, a side corner retaining portion 55, and a brace 90 (not shown). The fastening retaining portion 60b restricts the separation of the detachment portion 26, and for example, the bending retaining portion 60b shown in FIG. 10(C) can be used. When the fastening retaining portion 60b is attached, the detachment portion 26 is fixed, and can be separated by removing the fastening retaining portion 60b. The bending retaining portion 60b restricts the bending of the front and rear bending portion 27, and for example, the bending retaining portion shown in FIG. 10(A) to (C) can be used. Here, the bending retaining portion 60b shown in FIG. 10(C) is used. The upper retaining portions 50a, 50b and the side corner retaining portion 55 are the same as those described in the first embodiment. The brace 90 is the same as that described in the first embodiment. In this framework 20e, a brace 90 is provided on the upper surface of the framework 20e. However, it is not necessary to use all of these retaining parts, and it is possible to use only one or more of these retaining parts as long as the shape of the framework 20e can be maintained.

[0066] Next, a folding method of the framework 20e of this embodiment will be described with reference to Figs. 16(A)(B), 17(A)(B), and 18(A). Fig. 16(A) is a plan view of the framework 20e before folding, Figs. 16(B) to 17(A)(B) are plan views of the framework 20e in the middle of folding, and Fig. 18(A) is a plan view of the framework 20e in the folded state. First, the anchoring holding portion 60b, the bending holding portion 60b, the upper holding portions 50a, 50b, and the side corner holding portion 55 are removed from the state shown in Fig. 16(A). Next, as shown in Fig. 16(B), the front and rear bending portion 27 is bent in a direction in which the separation portion 26 is separated, and the front and rear bending portion 27 is bent until it becomes a generally mountain-shaped shape in plan view as shown in Fig. 17(A).

[0067] Next, as shown in Fig. 17(B), the front upper connecting portion 40 and the front lower connecting portion 42, which are the connecting members on the side of the separation portion 26, are extended horizontally. At the same time, the rear upper connecting portion 41 and the rear lower connecting portion 43, which are the connecting members on the side of the front-rear bending portion 27, are bent horizontally. Then, the framework 20e is folded until it reaches the state shown in Fig. 18(A). Note that these explanations are divided into operations for ease of understanding, and the bending of the front-rear bending portion 27 and the extension or bending of the connecting members may be performed simultaneously, or the extension or bending of each connecting member may be performed first.

[0068] 18(B) shows framework 20f in which the position of the hinge in the connecting member is changed. In this way, changing the position of the hinge results in a slight difference in the shape of framework 20f in the folded state, but it is clear that these forms are also included in this embodiment (as are the other embodiments).

[0069] [Sixth embodiment] A framework 20g and a holding portion according to another embodiment will be described with reference to Figures 19(A) and 19(B). Figure 19(A) is a plan view of the framework 20g in the middle of being folded, and Figure 19(B) is a plan view of the framework 20g in the folded state.

[0070] The configuration of the framework 20g of this embodiment is basically the same as the framework 20e described in the fifth embodiment, so only the differences will be described. In this embodiment, the front upper connecting portion 40 and the front lower connecting portion 42, which are the sides where the separation portion 26 is provided, are configured to be bendable. In addition, the rear upper connecting portion 41 and the rear lower connecting portion 43, which are the sides where the front and rear bending portion 27 is provided, are configured to be extendable.

[0071] Therefore, the method of folding the framework 20g is the same as in Figures 16(A)(B) to 17(A). From there, as shown in Figure 19(A), the front upper connecting portion 40 and the front lower connecting portion 42, which are the connecting members on the side of the separation portion 26, are bent horizontally. At the same time, the rear upper connecting portion 41 and the rear lower connecting portion 43, which are the connecting members on the side of the front and rear bending portion 27, are extended horizontally. Then, the framework 20g is folded until it reaches the state shown in Figure 19(B).

[0072] In the fifth and sixth embodiments, the vicinity of the front-rear bending portion 27 is suspended by the suspending portion 81 shown by the dashed line in Fig. 2, so that the framework 20 can be folded up small even in a state where it is attached to the coating device 1. In this case, the coating device 1 can be made smaller by rotating it horizontally by 90 degrees from the state shown in Fig. 18(A)(B) and Fig. 19(B) about the connection portion 82 between the suspending portion 81 and the framework 20 as an axis.

[0073] As described above, according to the application device of this embodiment, the frame of the shatterproof cover can be folded, so that space can be saved when transporting or storing the application device. In the frame shown in the first embodiment, the frame is folded into a substantially diamond shape, so that the configuration can be simplified and the thickness dimension of the frame after folding can be reduced. In addition, in the frames shown in the second and third embodiments, the left and right upper frames and the left and right lower frames are folded to compress the front and rear dimensions of the frame, so that the dimensions after folding fit within the size of the front view or rear view of the frame. In addition, when folding or unfolding the frame, it is sufficient to move the front upper frame, front lower frame, rear upper frame, and rear lower frame in the horizontal direction, so that the folding and unfolding operations can be performed relatively easily even if the frame is heavy. In particular, when casters are provided at the bottom of the frame, the folding and unfolding operations become easier. In the fourth embodiment, the front and rear supports are folded to compress the vertical dimensions of the frame, so that the dimensions after folding are within the size of the plan or bottom view of the frame. In the fifth and sixth embodiments, a part of the frame material is cut off, so that the frame can be folded to the smallest size.

[0074] The above-mentioned application device is an example of the present invention, and its configuration can be appropriately changed without departing from the scope of the present invention. For example, in the frame 20b of the second embodiment, as shown in FIG. 11(B), the left and right bending portions 21 are bent inwardly of the frame 20b to be folded in a shape like two "Σ"s facing each other, but the left and right bending portions 21 can also be bent outwardly of the frame 20d to be folded in a substantially hexagonal shape (similar to FIG. 14(B) of the third embodiment and FIG. 15(B) of the fourth embodiment). By folding in this way, it is possible to reduce interference between the left and right reciprocating mechanism 5, the spray gun 8, etc. and the frame when folding the frame while it is attached to the dolly 2, etc. [Explanation of symbols]

[0075] 1 Coating device, 2 Cart, 3 Motor, 4 Wheels, 5 Left-right reciprocating mechanism, 6 Slider section, 7 Slide rail, 8 Spray gun, 9 Liquid piping, 10 ··Scattering prevention cover, 11 ··Sheet member, 20, 20a, 20b, 20c, 20d, 20e, 20f, 20g··framework, 21··left and right bending portion, 22··vertical intermediate support, 23··up and down bending portion, 24··horizontal intermediate support, 25··support bending portion, 26··detachment portion, 27··front and rear bending portion, 28b, 28c··bending end portion, 30··Front upper frame, 31··Rear upper frame, 32··Left and right upper frames, 33··Front lower frame, 34··Rear lower frame, 35··Left and right lower frames, 36··Front support, 37··Rear support, 40...Front upper connection portion, 41...Rear upper connection portion, 42...Front lower connection portion, 43...Rear lower connection portion, 44...Hinge, 50a, 50b, 50c, 50d, 50e··upper retaining portion, 51a, 51c, 51e··frame material fitting portion (upper retaining portion), 52··bridge fitting portion, 53a, 53c, 53d, 53e··bridge material, 54··hole (frame material fitting portion), 55··side corner retaining portion, 56··frame material fitting portion (side corner retaining portion), 57··reinforcing rib, 60a, 60b... Bending holding portion (connecting holding portion), 61... Long hole, 62... Female thread hole, 63... Top hole, 64... Horizontal holding portion, 65... Front and rear holding portion, 70...vertical corner support portion, 71...corner support portion, 72...side rib, 73...hole in corner support portion, 80··Knurled knob, 81··Suspension part, 82··Connection part, 83··Caster,

Claims

1. A cart equipped with wheels and capable of running; A spray gun provided on the carriage; a splash prevention cover that has a frame and is placed over the operating range of the spray gun to prevent the paint discharged from the spray gun from splashing; A holding portion that holds the shape of the framework, A coating device characterized in that the framework is configured to be foldable by removing the holding portion.

2. The framework, A front upper frame that is provided at the front upper portion and extends in the left-right direction; A rear upper frame that is provided at the rear upper portion and extends in the left-right direction; A pair of left and right upper frames extending in the front-rear direction and provided at the left and right upper portions; A front lower frame that is provided at the front lower portion and extends in the left-right direction; A rear lower frame that is provided at the rear lower portion and extends in the left-right direction; A pair of left and right lower frames extending in the front-rear direction and provided at the left and right lower parts; A pair of front support columns extending vertically and provided at the front; A pair of rear support columns extending vertically and provided at the rear; a pair of front upper connecting portions connecting the ends of the front upper frame, the front ends of the left and right upper frames, and the upper ends of the front pillars; a pair of rear upper connecting portions connecting the ends of the rear upper frame, the rear ends of the left and right upper frames, and the upper ends of the rear pillars; a pair of front lower connecting portions connecting the ends of the front lower frame, the front ends of the left and right lower frames, and the lower ends of the front pillars; a pair of rear lower connecting portions connecting the ends of the rear lower frame, the rear ends of the left and right lower frames, and the lower ends of the rear pillars; The application device according to claim 1 , wherein the framework can be folded by removing the holding portion, thereby bending or extending the front upper connecting portion, the rear upper connecting portion, the front lower connecting portion, and the rear lower connecting portion.

3. The application device according to claim 2, wherein when the holding portion is removed, two diagonal corners of the frame are bent in a plan view, side view, or rear view, and two diagonal corners of the frame are extended so that the frame can be folded.

4. The holding portion is An upper holding portion that connects the front upper frame and the rear upper frame, or the pair of left and right upper frames, to fix them and maintain the shape of the framework; a lateral support portion that connects the front support and the rear support to fix the front support and maintain the shape of the framework; a front and rear holding portion that connects and fixes one or more of the front upper frame and the front lower frame, and the rear upper frame and the rear lower frame to maintain the shape of the framework; a lateral corner retaining portion that fixes the angle of one or more of the adjacent corners of the frame among the front upper frame and the left and right upper frame, the rear upper frame and the left and right upper frame, the front lower frame and the left and right lower frame, and the rear lower frame and the left and right lower frame, to maintain the shape of the frame; a vertical corner retaining portion that fixes the angle of one or more of adjacent corners of the frame, among the front support and the left and right upper frames, the front support and the left and right lower frames, the rear support and the left and right upper frames, and the rear support and the left and right lower frames, or the angle of one or more of the front support and the front upper frame, the front support and the front lower frame, the rear support and the rear upper frame, and the rear support and the rear lower frame, to maintain the shape of the frame; A brace provided diagonally on one or more of the top, side, front, and back surfaces of the frame; 4. The coating device according to claim 3, wherein the coating device is one or more of the following:

5. The left and right upper frames and the left and right lower frames are provided with bendable left and right bending portions at intermediate portions in the longitudinal direction, The coating device according to claim 2 , wherein the left and right upper frames and the left and right lower frames are bent horizontally by removing the holding parts, and the front-to-rear dimensions of the framework are compressed so that the framework can be folded.

6. The holding portion is A bending holding portion that restricts bending of the left and right bending portions; An upper holding portion that connects the front upper frame and the rear upper frame, or the pair of left and right upper frames, to fix them and maintain the shape of the framework; a lateral support portion that connects the front support and the rear support to fix the front support and maintain the shape of the framework; a lateral corner retaining portion that fixes the angle of one or more of the adjacent corners of the frame among the front upper frame and the left and right upper frame, the rear upper frame and the left and right upper frame, the front lower frame and the left and right lower frame, and the rear lower frame and the left and right lower frame, to maintain the shape of the frame; A brace is provided diagonally on one or more of the top and side surfaces of the framework; The coating device according to claim 5 , wherein the coating device is one or more of the following:

7. The coating device according to claim 5 or 6, further comprising vertical intermediate supports provided across the left and right upper frames and the left and right lower frames at bent end portions located in front and behind the left and right bent portions.

8. The left and right upper frames and the left and right lower frames are provided with bendable upper and lower bending portions at intermediate portions in the longitudinal direction, The coating device according to claim 2 , wherein the left and right upper frames and the left and right lower frames are bent in the up-down direction by removing the holding parts, and the front-to-rear dimension of the framework is compressed so that the coating device can be folded.

9. The holding portion is a bending holding portion that restricts bending of the upper and lower bending portions; a lateral support portion that connects the front support and the rear support to fix the front support and maintain the shape of the framework; a vertical corner retaining portion that fixes the angles of the front support and the left and right upper frames, the front support and the left and right lower frames, the rear support and the left and right upper frames, and the rear support and the left and right lower frames adjacent to each other at the corners of the framework, thereby retaining the shape of one or more of the frameworks; A brace is provided diagonally on one or more of the top and side surfaces of the framework; The coating device according to claim 8 , wherein the coating device is one or more of the following:

10. A bendable support column bending portion is provided at a longitudinal intermediate portion of the front support column and the rear support column, The coating device according to claim 2 , wherein the front support pillars and the rear support pillars are bent in the left-right direction by removing the holding portion, and the vertical dimension of the framework is compressed so that the framework can be folded.

11. The holding portion is a front and rear holding portion that connects and fixes one or more of the front upper frame and the front lower frame, and the rear upper frame and the rear lower frame to maintain the shape of the framework; A bending retention portion that restricts bending of the support bending portion; a vertical corner retaining portion that fixes the angle of one or more of the adjacent front support and front upper frame, the front support and front lower frame, the rear support and rear upper frame, and the rear support and rear lower frame at the corners of the frame to maintain the shape of the frame; A brace provided diagonally on one or more of the side, front, and back surfaces of the frame; The coating device according to claim 10, wherein the coating device is one or more of the following:

12. a separation portion at an intermediate portion of one of the front upper frame and the front lower frame, or the rear upper frame and the rear lower frame, which allows the front upper frame and the front lower frame, or the rear upper frame and the rear lower frame, to be separated at the intermediate portion; a front-rear bending portion that can bend the front upper frame and the front lower frame, or the rear upper frame and the rear lower frame, in a direction in which the separation portion moves away from each other, at an intermediate portion of the other of the front upper frame and the front lower frame, or the rear upper frame and the rear lower frame; The front upper connecting portion and the front lower connecting portion, or the rear upper connecting portion and the rear lower connecting portion on the side of the detachment portion are configured to be extended in a horizontal direction, The front upper connecting portion and the front lower connecting portion, or the rear upper connecting portion and the rear lower connecting portion on the side of the front-rear bending portion are configured to be bent, The application device of claim 2, wherein the framework is configured to be foldable by separating the detachment portion, bending the front and rear bending portions, extending the front upper connecting portion and the front lower connecting portion, or the rear upper connecting portion and the rear lower connecting portion, on the side of the detachment portion, and bending the front upper connecting portion and the front lower connecting portion, or the rear upper connecting portion and the rear lower connecting portion, on the side of the front and rear bending portions.

13. a separation portion at an intermediate portion of one of the front upper frame and the front lower frame, or the rear upper frame and the rear lower frame, which allows the front upper frame and the front lower frame, or the rear upper frame and the rear lower frame, to be separated at the intermediate portion; a front-rear bending portion that can bend the front upper frame and the front lower frame, or the rear upper frame and the rear lower frame, in a direction in which the separation portion moves away from each other, at an intermediate portion of the other of the front upper frame and the front lower frame, or the rear upper frame and the rear lower frame; The front upper connecting portion and the front lower connecting portion, or the rear upper connecting portion and the rear lower connecting portion on the side of the detachment portion are configured to be bent in a horizontal direction, The front upper connecting portion and the front lower connecting portion, or the rear upper connecting portion and the rear lower connecting portion on the side of the front-rear bending portion are configured to be extended, The application device of claim 2, wherein the framework is configured to be foldable by separating the detachment portion, bending the front and rear bending portions, bending the front upper connecting portion and the front lower connecting portion, or the rear upper connecting portion and the rear lower connecting portion, on the side of the detachment portion, and extending the front upper connecting portion and the front lower connecting portion, or the rear upper connecting portion and the rear lower connecting portion, on the side of the front and rear bending portions.

14. The holding portion is A fastening portion that restricts the detachment of the detachment portion; A bending retention portion that restricts bending of the front and rear bending portion; An upper holding portion that connects the front upper frame and the rear upper frame, or the pair of left and right upper frames, to fix them and maintain the shape of the framework; a lateral corner retaining portion that fixes the angle of one or more of the adjacent corners of the front upper frame and the left and right upper frames, the rear upper frame and the left and right upper frames, the front lower frame and the left and right lower frames, and the rear lower frame and the left and right lower frames, thereby maintaining the shape of the framework; A brace provided diagonally on the upper surface of the framework; The coating device according to claim 12 or 13, wherein the coating device is one or more of the following:

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