A wall paint scraping device

Abstract

This utility model discloses a wall paint removal device, including a scraper composed of two blades, the first sides of which are movably connected together. On a plane perpendicular to the thickness of the scraper: the included angle A of the two blades facing the wall is less than 180°; the two blades are connected by an elastic member to maintain an included angle of less than 180° on the side facing the wall; the two sides of the two blades located on either side of the movably connected position and interlocking form the working part, which contacts the wall surface, and the included angle B between the working part and the connected first side is less than 90°. By setting two movable blades and maintaining elasticity through the elastic member, the working part of the blade can automatically adapt to minor concave and convex areas of the wall surface, maximizing the removal effect; designing the working part of the blade with a pointed structure allows for easier scraping into the existing paint layer during the removal operation.

Description

Technical Field

[0001] This utility model relates to the field of interior decoration equipment technology. Specifically, it is a wall paint removal device. Background Technology

[0002] When redecorating interior walls, it's necessary to remove the existing paint to ensure a firm bond between the new paint and the wall surface. A wall scraper is a common tool, inexpensive, simple in structure, and easy to use, making it widely applicable. Most wall scrapers consist of a single, continuous blade. The cutting edge is used to scrape away the paint. In practice, the handle connects to the blade, creating an angle between the blade and the wall surface. The blade is then slid across the wall to remove the existing paint. However, because walls are not perfectly flat and often have minor unevenness, and the blade's cutting edge is straight and rigid, parts of the blade may not fully contact these uneven areas, resulting in incomplete paint removal in some areas. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to provide a wall paint removal device that can automatically and to the greatest extent possible fit the device to remove paint from uneven areas of the wall, so as to achieve maximum scraping of the wall paint.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a wall paint removal device, including a scraper, the scraper being composed of two blades, the first sides of the two blades being movably connected together; on a plane perpendicular to the thickness of the scraper: the included angle A of the two blades facing the wall is less than 180°; the two blades are connected by an elastic member and the included angle of the two blades facing the wall is kept less than 180°; the two sides of the two blades located on both sides of the movably connected position and abutting each other are the working parts, the working parts are in contact with the wall, and the included angle B between the working parts and the connected first side is less than 90°.

[0005] In the aforementioned wall paint removal device, one side of the elastic component is fixed to the surface of one of the blades, and the other side of the elastic component is fixed to the surface of the other blade; of the two blades, any one blade can rotate around the first side of the other blade.

[0006] The wall paint removal device described above has an elastic component that is an elastic sheet; the side wall opposite the blade is provided with a clearance plane that gradually contracts inward from the side adjacent to the wall to the side away from the wall.

[0007] In the aforementioned wall paint removal device, a pressing component is connected to the blade plate, and the pressing component provides pressure to the two blade plates to make the two working parts adhere to the wall surface.

[0008] The aforementioned wall paint removal device includes a pressing component comprising a pressure plate, which is disposed on the side of the blade facing away from the wall. The pressure plate is attached to the first side of the two blades at their joint and covers the movable connection position.

[0009] The aforementioned wall paint removal device has positioning protrusions on the side of the two blades facing away from the wall, and positioning holes on the pressure plate. The positioning protrusions on the two blades are respectively inserted into the positioning holes on both sides of the pressure plate, and there is a gap between the positioning protrusions and the positioning holes.

[0010] In the aforementioned wall paint removal device, a connecting component is fixedly installed on the pressure plate, and the connecting component extends in a direction away from the blade plate.

[0011] The aforementioned wall paint removal device includes two blades with side guards on their opposite sides. The connection between the side guards and the blades is elastic, and the side guards extend along the thickness direction of the blades toward the side away from the wall. A baffle is fixedly installed between the ends of the two side guards. The space enclosed by the two blades, the two side guards, and the baffle serves as a collection channel.

[0012] In the aforementioned wall paint removal device, rollers are respectively installed at both ends of the baffle near the collection channel. The two ends of the rollers are rotatably engaged with the baffle edge. The two rollers are connected by a connecting belt. The surface of the connecting belt is provided with bristles. There is a gap between the connecting belt and the blade. When the scraper removes the wall paint, the connecting belt rotates synchronously in the collection channel.

[0013] The aforementioned wall paint removal device has a connecting arm hinged to the outer wall surface of the retaining edge. The hinged position of the connecting arm is coaxial with the roller. A roller is installed on the free end of the connecting arm. A spring is provided between the connecting arm and the retaining edge. The wheel surface of the roller contacts the wall surface. The roller and one of the rollers are connected by a belt drive.

[0014] The technical solution of this utility model has achieved the following beneficial technical effects:

[0015] By setting two movable blades and maintaining their elasticity through elastic components, the working part of the blades can automatically adapt to minor concave and convex areas on the wall surface, maximizing the removal effect; the working part of the blades is designed with a sharp corner structure, which makes it easier to scrape into the original paint layer during the removal operation. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of the shovel blade of this utility model;

[0017] Figure 2 A side view of the shovel blade of this utility model;

[0018] Figure 3 A top view of the shovel blade of this utility model;

[0019] Figure 4 A partial three-dimensional structural diagram of the wall paint removal device of this utility model;

[0020] Figure 5 A schematic diagram of the scraper of this utility model attached to the wall surface;

[0021] Figure 6 A side view sectional diagram of the paint removal device of this utility model attached to the wall.

[0022] The reference numerals in the figure are as follows: 1-shovel blade; 11-blade plate; 12-elastic component; 13-working part; 14-first side; 15-avoidance plane; 2-pressure plate; 3-positioning protrusion; 4-connecting component; 5-edge; 6-baffle; 7-roller; 8-connecting belt; 9-connecting arm; 10-roller. Detailed Implementation

[0023] The wall paint removal device in this embodiment differs from traditional scrapers in that it improves the one-piece blade into a two-piece design, and allows for free swinging, such as... Figure 1 As shown, the shovel blade 1 consists of two blades 11. The first sides 14 of the two blades 11 are movably connected together. The two blades can be hinged to each other, or the first sides 14 can be fitted together and then connected by an elastic member 12 to form a movable connection. Alternatively, the elastic member 12 can be connected between the two blades, allowing them to move. The elastic member can also be integrally formed with the two blades. Figure 2 As shown, on a plane perpendicular to the thickness of the scraper 1: the included angle A of the two blades 11 facing the wall is less than 180° and greater than 90°; the two blades 11 are connected by an elastic member 12 and the included angle of the two blades facing the wall is kept less than 180°; as shown Figure 3As shown, the two blades 11 are located on both sides of the movable connection position, and their two interlocking sides form the working parts 13. The working parts 13 are in contact with the wall surface. The angle B between the working parts 13 and the connected first side 14 is less than 90° and greater than 60°. In the top view, the angle between the two working parts 13 is less than 180°, that is, the working parts 13 have a sharp corner in the middle. When performing scraping operations, compared with the traditional one-piece flat blade, the sharp-cornered blade tip can more easily scrape into the paint layer. Due to the characteristics of wall construction, the wall surface is uneven. The surface is gently sloping, with only a few millimeters of variation. When the blade tip encounters a concave area, under the applied force, the blade tip loses the support of the wall and descends into the concave area, increasing the angle A between the two blades and allowing it to scrape into the concave. When the blade tip encounters a convex area, the blade tip rises accordingly, decreasing the angle A between the two blades and allowing the working part of the blade to fit against the convex surface. Similarly, when either blade encounters a concave or convex area, it can adjust its angle relative to the other blade to ensure the working part fits against the wall, maximizing the scraping effect.

[0024] like Figure 2 As shown, one side of the elastic member 12 is fixed to the surface of one of the blade plates 11, and the other side of the elastic member 12 is fixed to the surface of the other blade plate 11; either blade plate 11 can rotate around the first side 14 of the other blade plate 11; specifically, the elastic member 12 can be an elastic sheet or a tension spring; a clearance plane 15 is provided on the opposite sidewall of the blade plates 11, gradually contracting inward from the side adjacent to the wall to the side away from the wall. The elastic member 12 is used to maintain a certain angle between the two blade plates 11 and to keep the working parts 13 of the two blade plates 11 in contact with the wall.

[0025] like Figure 4As shown, for ease of manual operation, a pressing component is connected to the blade plate 11. The pressing component provides pressure to the two blade plates 11, causing the two working parts 13 to adhere to the wall surface. The pressing component includes a pressure plate 2, which is set on the side wall of the blade plate 11 away from the wall surface. The pressure plate 2 adheres to the first side 14 where the two blade plates 11 meet and covers the movable connection position. Positioning protrusions 3 are provided on the side wall of the two blade plates 11 away from the wall surface. Positioning holes are provided on the pressure plate 2. The positioning protrusions 3 on the two blade plates 11 are respectively inserted into the positioning holes on both sides of the pressure plate 2. There is a gap between the positioning protrusions 3 and the positioning holes. The pressure plate 2 can transmit the force in the direction of paint removal to the blade plate by cooperating with the positioning protrusions 3 and the positioning holes. The gap between the positioning protrusions 3 and the positioning holes can ensure that the blade plate can swing relative to the pressure plate. At the same time, the positioning protrusions 3 also have a limiting block to prevent the pressure plate 2 from falling off. A connecting component 4 is fixedly installed on the pressure plate 2, and the connecting component 4 extends in the direction away from the blade plate 11. The connecting component 4 can be connected to external handles, extension rods, etc., to facilitate shoveling operations. During operation, pressure is applied to the pressure plate 2 through the handle and connecting component 4, such as... Figure 5 As shown, the blade has an angle with the wall surface to facilitate the removal operation. When the working part is attached to the wall surface, the ends of the two working parts that are far apart from each other first contact the wall surface. Under pressure, the angle A between the two blades increases, that is, the two blades open up, so that the working part is completely attached to the wall surface, and then the removal operation can be carried out.

[0026] like Figure 4 As shown, during paint removal operations, the detached paint will scatter freely, deteriorating the working environment and requiring subsequent cleaning. In this embodiment, each of the two blades 11 has a retaining edge 5 on its side opposite to the first side 14. The connection between the retaining edge 5 and the blade 11 is elastic, and the retaining edge 5 and the blade are connected by rubber. The retaining edge 5 extends along the thickness direction of the blade 11 towards the side away from the wall. A baffle 6 is fixedly installed between the ends of the two retaining edges 5. The space enclosed by the two blades 11, the two retaining edges 5, and the baffle 6 is a collection channel. Since the blades have an angle with the wall, the baffle 6 can extend forward and beyond the working part. The paint removed by the working part falls and is caught by the baffle 6 and enters the collection channel. The collection channel can be connected to a collection bucket or a negative pressure suction system through a pipe.

[0027] like Figure 6As shown, rollers 7 are respectively installed on both ends of the baffle 6 near the collection channel. The two ends of the rollers 7 are rotatably engaged with the baffle 5. The two rollers 7 are connected by a connecting belt 8. The surface of the connecting belt 8 is provided with bristles. There is a gap between the connecting belt 8 and the blade 11. When the scraper 1 removes the wall paint: the connecting belt 8 rotates synchronously in the collection channel; a connecting arm 9 is hinged to the outer wall of the baffle 5. The hinge position of the connecting arm 9 is coaxial with the roller 7. A roller 10 is installed on the free end of the connecting arm 9. A spring is provided between the connecting arm 9 and the baffle 5. The wheel surface of the roller 10 contacts the wall surface. The roller 10 and one of the rollers 7 are connected by a belt drive. The belt drive adopts the structure of a pulley and a synchronous belt or belt in the prior art. During the scraping operation, the connecting arm 9 and the roller 10 serve to support and stabilize the blade. On the other hand, the roller 10 rotates in contact with the wall surface, driving the roller 7 and the connecting belt 8 to rotate. The bristles clean and push the scraped wall paint pieces or powder in the collection channel to avoid blockage.

[0028] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of the claims of this patent application.

Claims

1. A wall covering scraping device comprising a scraper (1), characterized in that, The shovel (1) consists of two blades (11), and the first side (14) of the two blades (11) are movably connected together. On a plane perpendicular to the thickness of the shovel (1): the included angle A of the two blades (11) facing the wall is less than 180°. The two blades (11) are connected by an elastic member (12) and the included angle of the two blades facing the wall is less than 180°. The two sides of the two blades (11) located on both sides of the movably connected position and abutting each other are the working parts (13). The working parts (13) are in contact with the wall, and the included angle B of the working parts (13) and the connected first side (14) is less than 90°.

2. A wall covering removal device according to claim 1, wherein, One side of the elastic member (12) is fixed to the surface of one of the blades (11), and the other side of the elastic member (12) is fixed to the surface of the other blade (11); the two blades (11): any one blade (11) can rotate around the first side (14) of the other blade (11).

3. A wall covering removal device according to claim 2, wherein, The elastic component (12) is an elastic sheet; the blade (11) has a clearance plane (15) that gradually shrinks inward from the side adjacent to the wall to the side away from the wall.

4. A wall covering removal device according to claim 1, wherein A pressing component is connected to the blade (11), and the pressing component provides pressure to the two blades (11) to make the two working parts (13) fit against the wall.

5. A wall covering removal device according to claim 4, wherein, The pressing component includes a pressure plate (2), which is disposed on the side wall of the blade (11) away from the wall. The pressure plate (2) is attached to the first side (14) where the two blades (11) meet and covers the movable connection position.

6. A wall covering removal device according to claim 5, wherein, Both blades (11) are provided with positioning protrusions (3) on the side of the wall facing away from the wall. The pressure plate (2) is provided with positioning holes. The positioning protrusions (3) on the two blades (11) are respectively inserted into the positioning holes on both sides of the pressure plate (2). There is a gap between the positioning protrusions (3) and the positioning holes.

7. A wall covering removal device according to claim 6, wherein, A connecting component (4) is fixedly installed on the pressure plate (2), and the connecting component (4) extends in a direction away from the blade plate (11).

8. A wall covering removal device according to claim 1, wherein, Each of the two blades (11) has a retaining edge (5) on the side opposite to the first side (14). The retaining edge (5) is elastic at the connection with the blade (11). The retaining edge (5) extends along the thickness direction of the blade (11) towards the side away from the wall. A baffle (6) is fixedly installed between the ends of the two retaining edges (5). The enclosed space of the two blades (11), the two retaining edges (5) and the baffle (6) is a collection channel.

9. A wall paint removal device according to claim 8, characterized in that, Rollers (7) are respectively provided on both ends of the baffle (6) near the collection channel. The two ends of the rollers (7) are rotatably engaged with the baffle (5). The two rollers (7) are connected by a connecting belt (8). The surface of the connecting belt (8) is provided with bristles. There is a gap between the connecting belt (8) and the blade (11). When the scraper (1) removes the wall paint, the connecting belt (8) rotates synchronously in the collection channel.

10. A wall covering removal device according to claim 9, wherein, A connecting arm (9) is hinged to the outer wall of the flange (5). The hinge position of the connecting arm (9) is coaxial with the roller (7). A roller (10) is installed on the free end of the connecting arm (9). A spring is provided between the connecting arm (9) and the flange (5). The wheel surface of the roller (10) is in contact with the wall surface. The roller (10) and one of the rollers (7) are connected by belt drive.

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