Brushing tool

Abstract

The brushing tool is characterized in that an upper driving ring is connected to the upper side in a shell in a limiting manner, a lower driving ring is rotatably connected to the lower side in the shell, the lower end of a handle extends into the shell and is fixedly connected with the upper driving ring, and the upper side of a brush plate extends into the lower end of the shell and is fixedly connected to the lower end part of the lower driving ring. The problems that in the prior art, no professional construction tool exists for outer wall screw hole waterproof coating construction, no standard exists in the construction process, the construction effects of different constructors are different, and the delivery standard of a building to an owner is seriously affected are solved. And even in the using process of owners, the problems of water leakage and water seepage are caused due to different construction processes of the waterproof coating film for the screw hole of the outer wall. By means of the brushing tool, standardized operation of waterproof film coating construction of the outer wall screw hole can be achieved, strict requirements can be met in the coating process of the outer wall screw hole, the waterproof effect of the outer wall screw hole is met, and waste of paint is reduced. Construction can be facilitated, and labor intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of the structural design of tools for spraying waterproof coatings on the external wall screw holes during the building construction process, and particularly relates to a painting tool. Background Art

[0002] The external wall screw holes are mainly used for fixing formworks and supporting structures, and play a key role in the building construction process. There are a large number of screw holes in the formwork reinforcement of the main structure, and the number of screw holes is huge. However, with the completion of the construction, these screw holes often become potential risk points for external wall leakage. If not properly treated, the screw holes may cause problems such as external wall water seepage, wall dampness, and mildew, seriously affecting the service life and living comfort of the building.

[0003] In order to solve the possible leakage problems caused by the external wall screw holes, spraying waterproof coatings has become an effective solution. The waterproof coating can form a dense waterproof layer, effectively preventing water from penetrating into the wall through the screw holes. In addition, the waterproof coating also has good durability and weather resistance, and can maintain the waterproof effect for a long time.

[0004] When arranging workers to carry out the waterproof construction of screw holes, sporadic labor is often used. If the construction speed can be accelerated, a large amount of cost can be saved.

[0005] A layer of waterproof coating film needs to be constructed on the outside of each screw hole. The construction quality of the waterproof project directly affects the use of the building and even the structural safety. With the development of building technology, the requirements for the construction quality and environmental protection of building waterproofing are also getting higher and higher. It is necessary to select better waterproof materials and adopt excellent construction techniques to ensure the waterproof effect and structural safety of the building. Many residential communities have been successively built, and many residents have moved into new houses one after another. The owners are very concerned about the leakage of some external walls and worry that these leakages will cause great trouble and economic losses. And the most common problem in the external wall leakage is the treatment of the external wall screw holes.

[0006] The construction of the waterproof coating film for external wall screw holes is often inconvenient, and the improvement of waterproof tools has also become one of the internal demands.

[0007] Once the external wall leakage problem occurs, it is often very difficult to deal with. While accelerating the construction speed of the waterproof coating film for screw holes, it is necessary to ensure the construction quality at the same time.

[0008] However, in the prior art, there is no professional construction tool for the construction of the waterproof coating film for external wall screw holes, and there is no standard in the construction process, resulting in different construction effects of different construction workers, seriously affecting the delivery standard of the building to the owner. Even during the owner's use process, due to the different construction techniques of the waterproof coating film for external wall screw holes, problems such as water leakage and seepage occur. Utility Model Content

[0009] In view of this, the main object of the present utility model is to provide a painting tool that can standardize the waterproof coating operation of the external wall screw holes, improve the operation effect, reduce the waste of paint, and reduce the labor intensity of workers during construction.

[0010] To achieve the above object, the technical solution of the present utility model is realized as follows:

[0011] A painting tool, comprising: a handle, a housing, an upper driving ring, a lower driving ring, and a brush plate. The upper side inside the housing is connected to the upper driving ring in a limited manner, the lower side inside the housing is rotatably connected to the lower driving ring, the lower end of the handle extends into the housing and is fixedly connected to the upper driving ring, and the upper side of the brush plate extends into the lower end of the housing and is fixedly connected to the lower end of the lower driving ring.

[0012] In a preferred embodiment, the upper driving ring comprises: a plurality of upper driving arc plates, and the sum of the arcs of all the upper driving arc plates is 2π;

[0013] In a preferred embodiment, the lower driving ring respectively comprises: the same number of lower driving arc plates as the upper driving arc plates, and the sum of the arcs of all the lower driving arc plates is 2π;

[0014] In a preferred embodiment, the lower end of the upper driving arc plate and the upper end of the lower driving arc plate are respectively inclined surfaces, and the inclined surface of the upper driving arc plate pushes the inclined surface of the lower driving arc plate to rotate.

[0015] In a preferred embodiment, the brush plate comprises: a connecting plate, a brush body, and a rotating shaft. The lower bottom surface of the connecting plate is fixedly connected to the brush body, and the center of the upper side of the connecting plate is fixedly connected to the rotating shaft;

[0016] In a preferred embodiment, the lower end of the housing is fixedly connected to the support plate, a rotating shaft hole is provided in the center of the support plate, the rotating shaft extends into the housing along the rotating shaft hole, and the upper end of the rotating shaft is fixedly connected to the lower driving ring.

[0017] In a preferred embodiment, a bearing plate is fixedly connected to the lower end of the lower driving ring, and a thrust bearing is provided between the bearing plate and the support plate for support.

[0018] In a preferred embodiment, it further comprises: a brush housing, the brush housing is fixedly connected to the lower end of the housing, the brush plate is arranged inside the brush housing, and the lower end of the brush body extends out of the lower bottom surface of the brush housing.

[0019] In a preferred embodiment, the upper driving arc plate and the lower driving arc plate are respectively provided with three, and the arc of each upper driving arc plate and lower driving arc plate is 2π / 3.

[0020] In a preferred embodiment, one side of the opposite inclined surfaces of the upper driving arc plate and the lower driving arc plate is a vertical surface, and the bottoms of the upper driving arc plate and the lower driving arc plate are flat surfaces;

[0021] The upper end of the upper driving arc plate is fixedly connected through an upper fixing ring, and the lower end of the lower driving arc plate is fixedly connected through a lower fixing ring.

[0022] In a preferred embodiment, it further includes: an upper inclined tooth ring and a lower inclined tooth ring; the upper end of the upper inclined tooth ring is fixedly connected to the upper end of the housing, and the lower end of the lower inclined tooth ring is fixedly connected to the upper end of the upper driving ring;

[0023] In a preferred embodiment, guiding inclined protrusions are provided on the lower side of the upper inclined tooth ring and the upper side of the lower inclined tooth ring, so that the upper inclined tooth ring and the lower inclined tooth ring engage and rotate along the guiding inclined protrusions.

[0024] In a preferred embodiment, a compression spring is supported between the upper driving ring and the lower driving ring, so that the compression spring pushes the upper driving ring and the lower driving ring apart.

[0025] In a preferred embodiment, the upper end of the housing is sealed, and the lower end of the handle extends into the upper end of the housing.

[0026] The painting tool of the present utility model has the following beneficial effects:

[0027] For this painting tool, the upper driving ring is connected in a limiting manner on the upper side inside the housing, the lower driving ring is rotatably connected on the lower side inside the housing, the lower end of the handle extends into the housing and is fixedly connected to the upper driving ring, and the upper side of the brush plate extends into the lower end of the housing and is fixedly connected to the lower end of the lower driving ring.

[0028] It solves the problem in the prior art that there is no professional construction tool for the waterproof coating construction of the external wall screw holes, and there is no standard in the construction process, resulting in different construction effects by different construction workers, seriously affecting the delivery standard of the building to the owner. Even during the owner's use, due to different construction processes of the external wall screw hole waterproof coating, problems such as water leakage and seepage occur.

[0029] This painting tool can realize the standardized operation of the waterproof coating construction of the external wall screw holes. During the coating process of the external wall screw holes, strict requirements can be imposed, such as how many times to dip the paint and how many times to press after each dipping, to meet the waterproof effect of the external wall screw holes and reduce the waste of paint. Further, with a professional tool, the construction can be facilitated and the labor intensity of workers can be reduced. Description of the Drawings

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0031] Figure 1 Front view of a painting tool according to an embodiment of the present disclosure;

[0032] Figure 2 Cross-sectional view of a painting tool according to an embodiment of the present disclosure;

[0033] Figure 3 Schematic structural diagram of the handle of a painting tool according to an embodiment of the present disclosure;

[0034] Figure 4 Schematic structural diagram of the connection relationship between the housing and the brush housing of a painting tool according to an embodiment of the present disclosure;

[0035] Figure 5 Schematic structural diagram of the connection relationship between the handle and the lower inclined tooth ring and the upper drive ring of a painting tool according to an embodiment of the present disclosure;

[0036] Figure 6 Schematic structural diagram when the upper drive ring of a painting tool drives the lower drive ring to complete rotation according to an embodiment of the present disclosure;

[0037] Figure 7 Schematic structural diagram when the upper drive ring of a painting tool disengages from the lower drive ring according to an embodiment of the present disclosure;

[0038] Figure 8 Schematic structural diagram when the upper inclined tooth ring of a painting tool drives the lower inclined tooth ring to complete rotation according to an embodiment of the present disclosure;

[0039] Figure 9 Cross-sectional view of the housing of a painting tool according to an embodiment of the present disclosure.

[0040]

Description of the main component symbols

[0041] 1. Handle; 11. Lower pressing plate; 12. Slide block;

[0042] 2. Housing;

[0043] 21. Support plate; 22. Thrust bearing; 23. Guide groove;

[0044] 231. Upper vertical part; 232. Inclined part; 233. Lower vertical part;

[0045] 3. Upper drive ring;

[0046] 31. Upper drive arc plate;

[0047] 4. Lower drive ring;

[0048] 41. Lower drive arc plate; 42. Bearing plate;

[0049] 5. Brush plate;

[0050] 51. Connecting plate; 52. Brush body; 53. Rotating shaft;

[0051] 6. Brush housing;

[0052] 7. Upper inclined tooth ring;

[0053] 8. Lower inclined tooth ring;

[0054] 9. Compression spring. Detailed implementation manners

[0055] The painting tool of the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments of the present utility model.

[0056] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0057] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary implementation manners according to the present application. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0058] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the implementation manners of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0059] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used here to describe the spatial positional relationship of a device or feature shown in the figure with other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation described in the figure of the device. For example, if the device in the attached drawing is inverted, the device described as "above or over other devices or structures" will then be positioned as "below or under other devices or structures". Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations are made for the spatial relative descriptions used here.

[0060] As Figures 1 - 9 shown, the painting tool includes: a handle 1 for an operator to hold and operate, a housing 2 for support, an upper drive ring 3 that slides up and down to achieve a tangential component force, a lower drive ring 4 that rotates under pressure, and a brush plate 5 for applying polyurethane paint. The upper drive ring 3 is connected by a limit at the upper side inside the housing 2, the lower drive ring 4 is rotatably connected at the lower side inside the housing 2, the lower end of the handle 1 extends into the housing 2 and is fixedly connected to the upper drive ring 3, and the upper side of the brush plate 5 extends into the lower end of the housing 2 and is fixedly connected to the lower end of the lower drive ring 4. The handle 1 pushes the upper drive ring 3, the upper drive ring 3 acts on the lower drive ring 4, and the lower drive ring 4 rotates itself to drive the brush plate 5 to rotate, so that the waterproof paint can be applied during the rotation of the brush.

[0061] The diameter of the brush plate 5 is larger than the diameter of the external wall screw hole. During each painting process, the entire painting tool is sleeved on the outer wall of the external wall screw hole, so that the waterproof paint can be completely applied to the external wall screw hole in one construction.

[0062] Standardized construction can be achieved. For example, the number of painting times or the painting at intervals can be required. On the premise of ensuring uniform painting of the waterproof paint on the external wall screw hole, standardized requirements can also be met. It can avoid excessive painting and waste of paint, and insufficient painting that cannot meet the waterproof effect.

[0063] In order to convert the vertical movement into rotational movement and be in a balanced state during the action process. The upper drive ring 3 includes: a plurality of upper drive arc plates 31, and the sum of the radian measures of all the upper drive arc plates 31 is 2π, enclosing a circle.

[0064] The lower drive ring 4 respectively includes: the same number of lower drive arc plates 41 as the upper drive arc plates 31, and the sum of the radian measures of all the lower drive arc plates 41 is 2π;

[0065] The lower end of the upper driving arc plate 31 and the upper end of the lower driving arc plate 41 are inclined surfaces respectively, and the inclined surface of the upper driving arc plate 31 pushes the inclined surface of the lower driving arc plate 41 to rotate.

[0066] When the upper drive ring 3 is pressed downward, the upper drive ring 3 will not rotate (only a small amount of rotation) due to the friction of the hand, so that when the upper drive ring 3 slides along the inclined surface, it drives the lower drive ring 4 to rotate, thereby realizing the spraying of paint.

[0067] Of course, the inclination angle of the inclined surface here should be greater than the friction angle, so as to ensure that the upper driving ring 3 slides downward along the inclined surface and drives the lower driving ring 4 to rotate.

[0068] In order to realize the rotation of the brush plate 5, the brush plate 5 includes: a circular connecting plate 51, a brush body 52 mainly for brushing, and a rotating shaft 53 for driving the rotation. The lower surface of the connecting plate 51 is fixedly connected to the brush body 52, and the center of the upper side of the connecting plate 51 is fixedly connected to the rotating shaft 53; the rotation of the rotating shaft 53 drives the connecting plate 51 to rotate, thereby realizing the rotation of the brush body 52.

[0069] In order to support the lower driving ring 4, thereby offsetting the vertical force and retaining only the rotational force, the lower end of the housing 2 is fixedly connected to the support plate 21, the center of the support plate 21 is provided with a shaft hole, the shaft 53 extends into the housing 2 along the shaft hole, and the upper end of the shaft 53 is fixedly connected to the lower driving ring 4. Through the support of the support plate 21, it is possible to avoid completely pressing the downward force on the brush body 52, thereby extending the service life of the brush body 52.

[0070] In order to adapt to the support plate 21, especially to ensure that the rotation of the lower drive ring 4 can be achieved through rolling friction. Avoid the defect that the sliding friction is too large and it is difficult to achieve rotation. The lower end of the lower drive ring 4 is fixedly connected to a bearing plate 42, and the bearing plate 42 and the support plate 21 are supported by a thrust bearing 22. The thrust bearing 22 realizes the support function of the bearing plate 42 and the support plate 21, ensuring the smooth rotation of the lower drive ring 4.

[0071] Of course, in order to ensure the operation of the thrust bearing 22, a limiting structure is provided between the edge of the bearing plate 42 and the shell to ensure that the bearing plate 42 will not separate from the thrust bearing 22, thereby ensuring that the thrust bearing 22 structure is in a compressed working state.

[0072] To provide a supporting effect for the brush body 52, avoid prolonging the service life of the brush, and also improve the painting effect. It further includes: a brush housing 6, the brush housing 6 is fixedly connected to the lower end of the housing 2, a brush plate 5 is arranged inside the brush housing 6, and the lower end of the brush body 52 extends out of the bottom surface of the brush housing 6. While providing a supporting force for the brush body 52 through the brush housing 6, the lower end of the brush body 52 can extend out of the brush housing 6 to improve the painting effect of the brush body 52.

[0073] Preferably, there are three upper driving arc plates 31 and three lower driving arc plates 41 respectively, and the radian of each upper driving arc plate 31 and lower driving arc plate 41 is 2π / 3.

[0074] It can ensure a sufficiently long inclined surface, thereby increasing the rotation angle during each downward pressing process and improving the construction efficiency.

[0075] To ensure that the upper arc plate 31 does not rotate during the return stroke (ascending process), thus ensuring the smooth progress of the next drive. The side of the upper driving arc plate 31 and the lower driving arc plate 41 opposite to the inclined surface is a vertical surface, and the bottom of the upper driving arc plate 31 and the lower driving arc plate 41 is a flat surface; during the return stroke of the upper driving arc plate 31, it will not act on the lower driving arc plate 41, and they do not affect each other. The lower driving arc plate 41 remains stationary while the upper driving arc plate 31 moves vertically upward.

[0076] The upper end of the upper driving arc plate 31 is fixedly connected (by welding or integrally formed) through an upper fixing ring, and the lower end of the lower driving arc plate 41 is fixedly connected (by welding or integrally formed) through a lower fixing ring. Thereby ensuring the integrity of the entire structure of the upper driving ring 3 and the lower driving ring 4, forming a circular structure to meet the requirements of continuous driving work.

[0077] To ensure continuous operation, that is, after the upper driving ring 3 drives the lower driving ring 4, to ensure that the upper driving ring 3 can still drive the lower driving ring 4 next time. It is necessary to rotate the upper driving ring 3 backward (behind the rotation direction of the lower driving ring 4) by a certain angle to meet the requirement that the upper driving ring 3 can press down and push the lower driving ring 4 during the next driving process. Therefore, it further includes: an upper inclined tooth ring 7 and a lower inclined tooth ring 8 that can act on the upper driving ring 3 to rotate backward; the upper end of the upper inclined tooth ring 7 is fixedly connected to the upper end of the housing 2, and the lower end of the lower inclined tooth ring 8 is fixedly connected to the upper end of the upper driving ring 3;

[0078] On the lower side of the upper inclined tooth ring 7 and on the upper side of the lower inclined tooth ring 8, there are provided guiding inclined protrusions, so that the upper inclined tooth ring 7 and the lower inclined tooth ring 8 engage and rotate along the guiding inclined protrusions. Since the housing 2 does not rotate relatively, when the upper driving ring 3 moves upward, due to the engagement of the upper inclined tooth ring 7 and the lower inclined tooth ring 8, the lower inclined tooth ring 8 rotates backward along the guiding inclined protrusions, thereby driving the upper driving ring 3 to rotate backward, so as to meet the requirement that in the next driving process, the next lower driving arc plate 41 can be pushed, thereby realizing continuous rotation of the lower driving ring 4 along one direction by continuously driving the lower driving ring 4 through the upper driving ring 3.

[0079] In order to provide a restoring force to the upper driving ring 3, a compression spring 9 is supported between the upper driving ring 3 and the lower driving ring 4, so that the compression spring 9 pushes the upper driving ring 3 and the lower driving ring 4 apart. After the upper driving ring 3 drives the lower driving ring 4, the compression spring 9 pushes the upper driving ring 3 to rise. During the rising process, the lower inclined tooth ring 8 rotates along the upper inclined tooth ring 7, so that the upper driving ring 3 enters the next stroke.

[0080] In order to ensure the compactness and rationality of the structure, the upper end of the housing 2 is sealed, and the lower end of the handle 1 extends into the upper end of the housing 2.

[0081] In order to enable the lower inclined tooth ring 8 to be continuously driven to rotate by the upper inclined tooth ring 7, a lower pressing plate 11 is fixedly connected to the lower end of the handle 1. The lower inclined tooth ring is fixedly connected to the upper side of the lower pressing plate 11, and the upper driving ring 3 is fixedly connected to the lower side of the lower pressing plate 11.

[0082] A slider 12 protrudes from the side of the lower pressing plate 11, and a guiding groove 23 is provided on the inner wall of the housing 2. The slider 12 slides along the guiding groove 23. Through the setting of the direction of the guiding groove 23, it is ensured that during the downward pressing process of the lower pressing plate 11, it will rotate forward or backward by an angle less than the width of the guiding inclined protrusion, so that after the next driving is completed, during the rising process of the upper driving ring 3 pushed by the compression spring 9, the lower inclined tooth ring 8 will continue to rotate along the guiding inclined protrusions of the upper inclined tooth ring 7, so as to ensure that the upper inclined tooth ring 7 continuously drives the lower inclined tooth ring 8 to rotate, thereby ensuring that the upper driving ring 3 continuously drives the lower driving ring 4.

[0083] Specifically, as Figure 9 shown, the guiding groove 23 is divided into: an upper vertical portion 231, an inclined portion 232, and a lower vertical portion 233. The upper vertical portion 231 can satisfy the vertical movement of the upper inclined tooth ring 7 and the lower inclined tooth ring 8 during the separation process without rotation. The inclined portion 232 can make the upper driving ring 3 rotate forward by a small angle by a certain angle, and the arc length is less than the width of the guiding inclined protrusion. Thus, it can be ensured that the upper driving ring 3 is in a position where it can be driven to rotate by the upper inclined tooth ring 7 during the return stroke.

[0084] The above are only the preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model.

Claims

1. A painting tool, characterized in that: include: A handle (1), a shell (2), an upper drive ring (3), a lower drive ring (4) and a brush plate (5); the upper side of the shell (2) is limitedly connected to the upper drive ring (3); the lower side of the shell (2) is rotatably connected to the lower drive ring (4); the lower end of the handle (1) extends into the shell (2) and is fixedly connected to the upper drive ring (3); the upper side of the brush plate (5) extends into the lower end of the shell (2) and is fixedly connected to the lower end of the lower drive ring (4).

2. The painting tool according to claim 1, characterized in that: The upper driving ring (3) comprises: a plurality of upper driving arc plates (31), the sum of the arcs of all the upper driving arc plates (31) being 2π; The lower driving ring (4) comprises: lower driving arc plates (41) of the same number as the upper driving arc plates (31), and the sum of the arcs of all the lower driving arc plates (41) is 2π; The lower end of the upper driving arc plate (31) and the upper end of the lower driving arc plate (41) are respectively inclined surfaces, and the inclined surface of the upper driving arc plate (31) drives the inclined surface of the lower driving arc plate (41) to rotate.

3. The painting tool according to claim 2, characterized in that: The brush plate (5) comprises: a connecting plate (51), a brush body (52) and a rotating shaft (53); the lower surface of the connecting plate (51) is fixedly connected to the brush body (52), and the center of the upper side of the connecting plate (51) is fixedly connected to the rotating shaft (53); The lower end of the shell (2) is fixedly connected to the support plate (21), a rotating shaft hole is provided at the center of the support plate (21), the rotating shaft (53) extends into the interior of the shell (2) along the rotating shaft hole, and the upper end of the rotating shaft (53) is fixedly connected to the lower drive ring (4).

4. The painting tool according to claim 3, characterized in that: The lower end of the lower driving ring (4) is fixedly connected to a bearing plate (42), and is supported between the bearing plate (42) and the support plate (21) via a thrust bearing (22).

5. The painting tool according to claim 3, characterized in that: Also includes: A brush shell (6), the brush shell (6) is fixedly connected to the lower end of the housing (2), the brush plate (5) is arranged inside the brush shell (6), and the lower end of the brush body (52) extends out of the lower bottom surface of the brush shell (6).

6. The painting tool according to claim 3, characterized in that: Three upper driving arc plates (31) and three lower driving arc plates (41) are respectively provided, and the curvature of each upper driving arc plate (31) and each lower driving arc plate (41) is 2π / 3.

7. The painting tool according to claim 6, characterized in that: The side of the upper driving arc plate (31) and the lower driving arc plate (41) relative to the inclined surface is a vertical surface, and the bottoms of the upper driving arc plate (31) and the lower driving arc plate (41) are flat surfaces; The upper end of the upper driving arc plate (31) is fixedly connected via an upper fixing ring, and the lower end of the lower driving arc plate (41) is fixedly connected via a lower fixing ring.

8. The painting tool according to claim 1, characterized in that: Also includes: An upper inclined gear ring (7) and a lower inclined gear ring (8); the upper end of the upper inclined gear ring (7) is fixedly connected to the upper end of the housing (2), and the lower end of the lower inclined gear ring (8) is fixedly connected to the upper end of the upper drive ring (3); A guide inclined protrusion is provided on the lower side of the upper inclined gear ring (7) and the upper side of the lower inclined gear ring (8), so that the upper inclined gear ring (7) and the lower inclined gear ring (8) engage and rotate along the guide inclined protrusion.

9. The painting tool according to claim 8, characterized in that: A compression spring (9) is supported between the upper drive ring (3) and the lower drive ring (4), so that the compression spring (9) pushes the upper drive ring (3) and the lower drive ring (4) to separate.

10. The painting tool according to claim 1, characterized in that: The upper end of the shell (2) is sealed, and the lower end of the handle (1) extends into the upper end of the shell (2).

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