A paint painting device for building decoration

Abstract

The present invention provides a paint painting device for building decoration and furnishing, comprising a gripping rod, an L-shaped rod, a main brush, an auxiliary brush, and a paint assembly. The first end of the L-shaped rod is connected to the gripping rod, and the second end is rotatably connected to the first end of the main brush. The side of the main brush is covered with bristles, and the second end face is covered with the auxiliary brush. The paint assembly comprises a round rod, a connecting shaft, and a round tube. A limit plate, a connecting tube, a limit ring, and an auxiliary brush are sequentially provided on one side of the round rod. A connecting rod is provided on a side wall adjacent to the auxiliary brush and the connecting tube, and a clamping block is fixed on the side of the connecting rod. A return spring is provided at the end of the connecting rod facing away from the auxiliary brush. In this case, by providing an auxiliary brush, the auxiliary brush can be used to paint the connection between the wall and the roof while the main brush is painting the roof. At the same time, through the cooperation of the clamping block, the return spring, and the limit plate, the auxiliary brush can be stored inside the main brush when not in use, thereby preventing the auxiliary brush from rotating. This solves the problems of poor practicality and paint waste in existing paint painting devices for building decoration and furnishing.

Description

Technical Field

[0001] The invention belongs to the technical field of construction engineering, and in particular relates to a paint painting device for building decoration. Background Art

[0002] Architectural decoration is the abbreviation of architectural decoration and renovation projects. Architectural decoration is a variety of treatment processes on the internal and external surfaces and spaces of buildings using decorative materials or ornaments in order to protect the main structure of the building, improve the physical properties and usage functions of the building and beautify the building. Architectural decoration is an indispensable part of people's lives and a part of human taste in life. In the decoration process, painting is an essential part.

[0003] However, existing paint painting devices for building decoration and interior decoration still have the following drawbacks in actual use. Existing paint painting devices for building decoration and interior decoration generally consist of a roller and a handle, which is simple and convenient in structure. However, because the brush is only covered on the outer surface of the roller, the entire device is only suitable for painting the entire wall surface and cannot paint the corners of the wall, resulting in poor practicality of the entire device.

[0004] Existing paint painting devices for architectural decoration and renovation cannot meet the needs of actual use, so there is an urgent need for improved technology on the market to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a paint painting device for building decoration and renovation, which can simultaneously meet the painting needs of walls and corners, thereby improving the working efficiency and practicality of the entire device.

[0006] In order to solve the above technical problems, the present invention provides a paint painting device for building decoration, comprising:

[0007] an L-shaped rod and a grip rod, wherein a first end of the L-shaped rod is connected to the grip rod;

[0008] A main brush having a cylindrical structure, the side of the main brush being covered with bristles, and the first end of the main brush being rotatably disposed on the second end of the L-shaped rod;

[0009] The auxiliary brush is in a circular plate-like structure. The front side of the auxiliary brush is provided with bristles, and the back side is provided at the second end of the main brush.

[0010] Optionally, the paint painting device for building decoration and renovation further includes a painting assembly, wherein the painting assembly includes: a round rod, a connecting shaft and a round tube;

[0011] The main brush is sleeved on the outer circumference of the round rod and the round tube, and two ends of the round rod are respectively provided with a connecting shaft for connecting with the L-shaped rod and a round tube for connecting with the auxiliary brush.

[0012] Optionally, in the above-mentioned paint painting device for building decoration, a connecting rod is provided on the back of the auxiliary brush, a clamping block is provided on the side of the connecting rod, and a return spring is provided at the end away from the auxiliary brush;

[0013] A connecting tube and a limiting plate are sequentially provided between the auxiliary brush and the circular tube, the inner wall of the connecting tube includes a thick inner wall away from the limiting plate and a thin inner wall close to the limiting plate, the thick inner wall is provided with a guide groove for the passage of the clamping block, and the thin inner wall can allow the clamping block to rotate in the circumferential direction; a center hole and a clearance groove for passing the connecting rod and the clamping block are respectively provided on the limiting plate, the center hole is connected to the clearance groove; the guide groove and the clearance groove do not overlap in the axial direction; the return spring abuts against the end of the circular rod;

[0014] When installing the auxiliary brush, the clamping block is made to slide along the guide groove into the first receiving position at the thin inner wall of the connecting tube, and the auxiliary brush is rotated to make the clamping block engage with the edge of the thick inner wall. At this time, the auxiliary brush is fixed at the first receiving position inside the connecting tube; when storing the auxiliary brush, the auxiliary brush is pressed to squeeze the return spring, and at the same time, the auxiliary brush is rotated to make the clamping block slide along the give way groove into the second receiving position of the limiting plate close to the round rod side, and then the auxiliary brush is rotated to make the clamping block engage with the limiting plate. At this time, the auxiliary brush is fixed at the second receiving position inside the round tube.

[0015] Optionally, in the above-mentioned paint painting device for architectural decoration, the inner wall of the connecting pipe is provided with two semicircular rings arranged opposite to each other, and at least one guide groove is formed between the two semicircular rings;

[0016] The connecting tube where the semicircular ring is located forms the rear inner wall, and the connecting tube where the semicircular ring is not located forms the thin inner wall.

[0017] Optionally, in the above-mentioned paint painting device for architectural decoration, the spacing between the two semicircular rings is equal to the width of the block, the width of the semicircular rings is equal to half the depth of the connecting pipe and equal to the thickness of the block.

[0018] Optionally, in the above-mentioned paint painting device for architectural decoration, a limiting ring for limiting the auxiliary brush is provided at one end of the connecting pipe away from the limiting plate, and the auxiliary brush is arranged on the inner side of the limiting ring.

[0019] Optionally, in the above-mentioned paint painting device for architectural decoration, the inner diameter of the limiting ring is equal to the outer diameter of the auxiliary brush, and the inner diameter of the limiting ring is smaller than the sum of the length of the block and the outer diameter of the connecting rod.

[0020] Optionally, in the above-mentioned paint painting device for architectural decoration, the number of the clamping blocks, the giving way grooves and the guide grooves is a plurality corresponding to one another.

[0021] Optionally, in the above-mentioned paint painting device for architectural decoration and renovation, the auxiliary brush and the main brush are integrally connected or threadedly connected.

[0022] Optionally, in the above-mentioned paint painting device for architectural decoration and renovation, the L-shaped rod is detachably connected to the gripping rod.

[0023] The present invention provides a paint painting device for building decoration, which has the following advantages:

[0024] By setting up an auxiliary brush, while using the main brush to paint the roof, the auxiliary brush can be used to paint the connection between the wall and the roof, which can meet the painting needs of the wall and the corners at the same time, and improve the working efficiency and practicality of the whole device.

[0025] In addition, by utilizing the cooperation of the clamping block, the return spring and the limit plate, the auxiliary brush can be stored inside the main brush when not in use, preventing the auxiliary brush from rotating, thereby solving the problems of poor practicality and paint waste in existing paint painting devices used for architectural decoration. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0027] Figure 1 A schematic structural diagram of a paint painting device for building decoration provided by an embodiment of the present invention;

[0028] Figure 2 A schematic structural diagram of a paint painting device for building decoration and renovation provided by an embodiment of the present invention, with the auxiliary brush in a stored state;

[0029] Figure 3 An exploded schematic diagram of a paint painting device for building decoration provided by an embodiment of the present invention;

[0030] Figure 4 A schematic structural diagram of a main brush provided in an embodiment of the present invention;

[0031] Figure 5 A schematic structural diagram of an auxiliary brush provided in an embodiment of the present invention;

[0032] Figure 6A schematic structural diagram of the auxiliary brush and paint assembly provided in an embodiment of the present invention.

[0033] In the above picture:

[0034] 100-painting assembly; 110-round rod; 111-connecting shaft; 112-round tube;

[0035] 120-limiting plate; 121-yielding groove;

[0036] 130-connecting pipe; 131-semicircular ring;

[0037] 140-limiting ring;

[0038] 150- auxiliary brush; 151- connecting rod; 1511- clamping block; 152- return spring;

[0039] 160-main brush;

[0040] 210 - L-shaped rod; 211 - grip. DETAILED DESCRIPTION

[0041] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0042] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0043] In the description of the present invention, the meaning of "plurality" is more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0044] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0045] The core of the present invention is to provide a paint painting device for architectural decoration, which can simultaneously meet the painting needs of walls and corners, thereby improving the working efficiency and practicality of the entire device.

[0046] In order to enable those skilled in the art to better understand the technical solutions provided by the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] Specifically, please refer to Figures 1-6 , Figure 1 A schematic structural diagram of a paint painting device for building decoration provided by an embodiment of the present invention; Figure 2 A schematic structural diagram of a paint painting device for building decoration and renovation provided by an embodiment of the present invention, with the auxiliary brush in a stored state; Figure 3 An exploded schematic diagram of a paint painting device for building decoration provided by an embodiment of the present invention; Figure 4 A schematic structural diagram of a main brush provided in an embodiment of the present invention; Figure 5 A schematic structural diagram of an auxiliary brush provided in an embodiment of the present invention; Figure 6 A schematic structural diagram of the auxiliary brush and paint assembly provided in an embodiment of the present invention.

[0048] The present invention provides a paint painting device for building decoration and renovation, comprising a gripping rod 211 , an L-shaped rod 210 , a main brush 160 and an auxiliary brush 150 .

[0049] The handle 211 is used as a hand grip for the operator to hold. It can be provided with an anti-slip structure, such as a pattern or a layer of material such as rubber with a certain surface friction. The specific pattern or material of the material layer can be adaptively selected according to actual needs.

[0050] The L-shaped rod 210 is L-shaped, with a first end connected to the handle 211 and a second end rotatably connected to the first end of the main brush 160. The first end of the L-shaped rod 210 can be designed to have different lengths depending on the required wall height.

[0051] The main brush 160 is cylindrical in shape. Its cylindrical sides are covered with bristles, its first end is pivotally mounted on an L-shaped rod 210, and its second end is covered with the auxiliary brush 150. This allows the side of the main brush 160 to serve as the primary painting surface, ideal for painting large areas like walls. The auxiliary brush 150, located on the end of the main brush 160, serves as an auxiliary painting surface, ideal for painting corners and other corners.

[0052] The auxiliary brush 150 is in a circular plate-like structure as a whole. The front side of the auxiliary brush 150 is provided with bristles, and the back side is provided on the second end surface of the main brush 160 .

[0053] The paint painting device for architectural decoration and renovation provided by the present invention is provided with an auxiliary brush 150, so that while the main brush 160 is used to paint the roof, the auxiliary brush 150 is used to paint the connection between the wall and the roof, which can meet the painting needs of the wall and the corners at the same time, thereby improving the working efficiency and practicality of the entire device.

[0054] In a specific embodiment, the present invention further includes a paint brush assembly 100 , which includes a round rod 110 , a connecting shaft 111 , and a round tube 112 .

[0055] The round rod 110 facilitates the placement of the main brush 160. The main brush 160 is sleeved onto the outer circumference of the round rod 110 and the circular tube 112, facilitating painting of the entire wall. The ends of the round rod 110 are respectively provided with a connecting shaft 111 for connecting to the L-shaped rod 210 and a circular tube 112 for connecting to the auxiliary brush 150. The connecting shaft 111 is fixedly connected to one end of the round rod 110 for convenient connection to the L-shaped rod 210, while the circular tube 112 is fixedly connected to the other end to provide space for the auxiliary brush 150.

[0056] Furthermore, a connecting rod 151 is provided on the back of the auxiliary brush 150 , a clamping block 1511 is provided on the side of the connecting rod 151 , and a return spring 152 is provided at the end away from the auxiliary brush 150 .

[0057] A connecting tube 130 and a limiting plate 120 are sequentially disposed between the auxiliary brush 150 and the circular tube 112. A connecting tube 130 is disposed between the limiting plate 120 and the auxiliary brush 150. The inner wall of the connecting tube 130 includes a thick inner wall away from the limiting plate 120 and a thin inner wall near the limiting plate 120. The thick inner wall is provided with a guide groove for the passage of the block 1511, while the thin inner wall allows the block 1511 to rotate circumferentially. The limiting plate 120 is provided with a center hole and a clearance groove 121 for the passage of the connecting rod 151 and the block 1511, respectively. The center hole is connected to the clearance groove 121. The diameter of the center hole is larger than the outer diameter of the connecting rod 151 and smaller than the outer diameter of the auxiliary brush 150.

[0058] When installing the auxiliary brush 150, slide the block 1511 along the guide groove into the first receiving position on the thin inner wall of the connecting tube 130. Then rotate the auxiliary brush 150 so that the block 1511 engages the edge of the thick inner wall. The auxiliary brush 150 is now fixed in the first receiving position inside the connecting tube 130. To remove the auxiliary brush 150, perform the reverse operation. This detachable design allows for quick replacement of the auxiliary brush 150.

[0059] When storing the auxiliary brush 150, the auxiliary brush 150 is pressed to squeeze the return spring 152, and the auxiliary brush 150 is rotated at the same time so that the block 1511 slides along the clearance groove 121 into the second storage position on the side of the limit plate 120 close to the round rod 110. The auxiliary brush 150 is then rotated so that the block 1511 engages with the limit plate 120. At this time, the auxiliary brush 150 is fixed in the second storage position inside the circular tube 112. When the auxiliary brush 150 needs to be used again, the auxiliary brush 150 is rotated so that the block 1511 slides along the clearance groove 121 out of the second storage position on the side of the limit plate 120 close to the round rod 110. The auxiliary brush 150 is then ejected from the interior of the circular tube 112 under the action of the return spring 152 and enters the first storage position. At this time, the auxiliary brush 150 can assist the main brush 160 in painting the edges and corners.

[0060] The guide groove and the clearance groove 121 do not overlap in the axial direction, so as to prevent the block 1511 from moving freely between the first storage position and the second storage position, thereby failing to achieve an effective position limiting function.

[0061] The stepped inner wall of the connecting pipe 130 may be provided in an integrated structure or a split structure.

[0062] Specifically, the inner wall of the connecting tube 130 is provided with two oppositely arranged semicircular rings 131, and at least one guide groove is formed between the two semicircular rings 131. The connecting tube 130 where the semicircular rings 131 are located forms the rear inner wall, and the connecting tube 130 without the semicircular rings 131 forms a thin inner wall.

[0063] In particular, the spacing between the two semicircular rings 131 is equal to the width of the block 1511, which is used to facilitate the limiting of the block 1511. The width of the semicircular ring 131 is equal to half the depth of the connecting tube 130 and equal to the thickness of the block 1511, which is used to facilitate the rotation of the block 1511.

[0064] In a further specific embodiment, a limiting ring 140 is provided at one end of the connecting tube 130 facing away from the limiting plate 120 to limit the auxiliary brush 150. The auxiliary brush 150 is disposed inside the limiting ring 140 to prevent the auxiliary brush 150 from being entirely removed from the connecting tube 130. The limiting ring 140 can be fixed to one end of the connecting tube 130 or can be detachably connected together by means of a threaded connection or the like.

[0065] In order to design more reasonably and conveniently limit the auxiliary brush 150, the inner diameter of the limiting ring 140 is equal to the outer diameter of the auxiliary brush 150, and the inner diameter of the limiting ring 140 is smaller than the sum of the length of the block 1511 and the outer diameter of the connecting rod 151.

[0066] In order to achieve stability of the limiting method, the number of the blocking blocks 1511, the clearance grooves 121 and the guide grooves is one-to-one corresponding to each other.

[0067] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions described in the aforementioned embodiments, any equivalent replacement of some of the technical features therein, and any modification, equivalent replacement, and improvement made are within the scope of protection of the present invention.

[0068] Of course, the auxiliary brush 150 and the main brush 160 can also be connected in an integral manner or in a threaded manner. The L-shaped rod 210 is detachably connected to the handle 211 .

[0069] In a specific embodiment, the paint painting device for architectural decoration and renovation provided in this case includes an L-shaped rod 210, a gripping rod 211, a main brush 160, an auxiliary brush 150 and a painting assembly 100. The painting assembly 100 includes a round rod 110, a connecting shaft 111 and a round tube 112. A limiting plate 120, a connecting tube 130, a limiting ring 140 and an auxiliary brush 150 are sequentially provided on one side of the round rod 110. A limiting plate 120 is provided at one end of the round rod 110 to facilitate limiting the block 1511, and the end of the limiting plate 120 facing away from the round rod 110 is fixedly connected to the connecting tube 130 to facilitate the placement of the semicircular ring 131. Semicircular rings 131 are fixedly connected to both sides of the inner side of the connecting tube 130 to facilitate limiting the block 1511. The end of the connecting tube 130 facing away from the limiting plate 120 is fixedly connected to a limiting ring 140, which facilitates the position of a clamping block 1511. An auxiliary brush 150 is positioned inside the limiting ring 140 to facilitate painting corners. A connecting rod 151 is fixedly connected to the side wall of the auxiliary brush 150 adjacent to the connecting tube 130, facilitating the placement of the clamping block 1511. Clamping blocks 1511 are also fixedly connected to both sides of the central outer circumference of the connecting rod 151, facilitating the position of the auxiliary brush 150. A return spring 152 is fixedly connected to the end of the connecting rod 151 facing away from the auxiliary brush 150, facilitating the ejection of the auxiliary brush 150.

[0070] Furthermore, one end of the round rod 110 is fixedly connected to a connecting shaft 111 to facilitate connection with the L-shaped rod 210, and the other end is fixedly connected to a round tube 112 to facilitate the placement of the return spring 152. The round tube 112 is sleeved on the outside of the return spring 152. Both sides of one side wall of the limit plate 120 are provided with a clearance groove 121 extending through the other side wall to facilitate the sliding out of the block 1511. The side wall of the limit plate 120 facing away from the connecting tube 130 is fixedly connected to the end of the round tube 112 on the round rod 110. Among them, the distance between the two semicircular rings 131 is equal to the width of the block 1511, which is convenient for limiting the block 1511. The width of the semicircular ring 131 is equal to half the depth of the connecting tube 130 and is equal to the thickness of the block 1511, which is convenient for the rotation of the block 1511. The inner diameter of the limiting ring 140 is equal to the outer diameter of the auxiliary brush 150 and is smaller than the sum of the length of the block 1511 and the outer diameter of the connecting rod 151, which is convenient for limiting the auxiliary brush 150.

[0071] The end of the connecting shaft 111 away from the round rod 110 is rotatably connected to the L-shaped rod 210, which is convenient for the placement of the handle 211, and the bottom of the L-shaped rod 210 is detachably fixedly connected to the handle 211, which is convenient for staff to hold.

[0072] Its working principle is as follows: when the paint painting device for building decoration is used, if it is necessary to paint the corners of the wall, first press the auxiliary brush 150 so that it squeezes the return spring 152 through the connecting rod 151, and at the same time rotate the auxiliary brush 150 so that the block 1511 on the connecting rod 151 coincides with the give way groove 121, so that the auxiliary brush 150 is ejected from the main brush 160 under the action of the return spring 152, and the block 1511 is embedded between the two semicircular rings 131. At this time, the auxiliary brush 150 can be used to paint the corners while the main brush 160 is used to paint the roof.

[0073] The present invention incorporates an auxiliary brush 150, allowing the main brush 160 to simultaneously paint the roof and the connection between the wall and the roof, improving the overall efficiency and practicality of the device. Furthermore, by utilizing the coordination of the clamping block 1511, the return spring 152, and the limit plate 120, the auxiliary brush 150 is retracted into the main brush 160 when not in use, preventing the auxiliary brush 150 from rotating and causing paint splashes and unnecessary trouble. This addresses the issues of poor practicality and paint waste associated with existing paint painting devices for architectural decoration.

[0074] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time.

[0075] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0076] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A paint painting device for building decoration, characterized in that: include: an L-shaped rod and a grip rod, wherein a first end of the L-shaped rod is connected to the grip rod; A main brush having a cylindrical structure, the side of the main brush being covered with bristles, and the first end of the main brush being rotatably disposed on the second end of the L-shaped rod; The auxiliary brush is a circular plate-shaped structure, with bristles provided on the front side and the back side provided at the second end of the main brush; Also included is a painting assembly, which includes: a round rod, a connecting shaft, and a round tube; The main brush is sleeved on the outer circumference of the round rod and the round tube, and the two ends of the round rod are respectively provided with a connecting shaft for connecting with the L-shaped rod and a round tube for connecting with the auxiliary brush; A connecting rod is provided on the back of the auxiliary brush, a clamping block is provided on the side of the connecting rod, and a return spring is provided at the end away from the auxiliary brush; A connecting tube and a limiting plate are sequentially provided between the auxiliary brush and the circular tube, the inner wall of the connecting tube includes a thick inner wall away from the limiting plate and a thin inner wall close to the limiting plate, the thick inner wall is provided with a guide groove for the passage of the clamping block, and the thin inner wall can allow the clamping block to rotate in the circumferential direction; a center hole and a clearance groove for passing the connecting rod and the clamping block are respectively provided on the limiting plate, the center hole is connected to the clearance groove; the guide groove and the clearance groove do not overlap in the axial direction; the return spring abuts against the end of the circular rod; When installing the auxiliary brush, the clamping block is made to slide along the guide groove into the first receiving position at the thin inner wall of the connecting tube, and the auxiliary brush is rotated to make the clamping block engage with the edge of the thick inner wall. At this time, the auxiliary brush is fixed at the first receiving position inside the connecting tube; when storing the auxiliary brush, the auxiliary brush is pressed to squeeze the return spring, and at the same time, the auxiliary brush is rotated to make the clamping block slide along the give way groove into the second receiving position of the limiting plate close to the round rod side, and then the auxiliary brush is rotated to make the clamping block engage with the limiting plate. At this time, the auxiliary brush is fixed at the second receiving position inside the round tube.

2. The paint painting device for building decoration according to claim 1 is characterized in that: The inner wall of the connecting pipe is provided with two semicircular rings arranged opposite to each other, and at least one guide groove is formed between the two semicircular rings; The connecting tube where the semicircular ring is located forms the thick inner wall, and the connecting tube where the semicircular ring is not located forms the thin inner wall.

3. The paint painting device for building decoration according to claim 2, characterized in that: The distance between the two semicircular rings is equal to the width of the clamping block, the width of the semicircular rings is equal to half the depth of the connecting pipe and equal to the thickness of the clamping block.

4. The paint painting device for building decoration according to claim 2, characterized in that: A limiting ring for limiting the auxiliary brush is provided at one end of the connecting pipe away from the limiting plate, and the auxiliary brush is arranged on the inner side of the limiting ring.

5. The paint painting device for building decoration according to claim 4 is characterized in that: The inner diameter of the limiting ring is equal to the outer diameter of the auxiliary brush, and the inner diameter of the limiting ring is smaller than the sum of the length of the clamping block and the outer diameter of the connecting rod.

6. The paint painting device for architectural decoration according to any one of claims 1 to 5, characterized in that: The number of the clamping blocks, the giving way slots and the guide slots is one-to-one corresponding to each other.

7. The paint painting device for building decoration according to claim 1 is characterized in that: The auxiliary brush and the main brush are connected in an integral manner or in a threaded manner.

8. The paint painting device for building decoration according to claim 1, characterized in that: The L-shaped rod is detachably connected to the gripping rod.

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