Corner grinder

Abstract

This utility model relates to the field of sanders, specifically to a corner sander. It includes a sander body with a handle fixed to it. The sander body includes a motor housing containing a motor. A protective cover is mounted on the bottom of the motor housing via an elastic micro-adjustment component. A sanding disc is fixed to the motor output shaft, and the sanding disc has Velcro fasteners for attaching sandpaper. The advantages of this utility model are: it not only performs wall sanding but also effectively sands corners and seams, and effectively reduces friction between the protective cover and the wall, facilitating movement of the sander during sanding. It also provides excellent protection around the protective cover, preventing wear and tear from impact with the wall when sanding inside corners. The protective cover is also elastically floating for micro-adjustment, and it avoids the hassle of twisting when sanding inside corners. It is feature-rich and highly practical.

Description

Technical Field

[0001] This utility model relates to the field of grinding machines, specifically to a corner grinding machine. Background Technology

[0002] A wall paint and putty sander, also known as a dust-collecting wall sander, wall sander, or putty sander, is an electric tool used for wall surface treatment. It is mainly used for sanding and polishing wall putty or paint layers and is suitable for surface treatment of talcum powder, old powder, and various putty materials.

[0003] While existing sanders can sand walls, they still have the following shortcomings in use: 1. It is difficult to properly sand the corner seams; 2. The friction between the protective cover and the wall surface is high, making it difficult to move the sander during the sanding process; 3. When sanding inside corners, there is a problem of impact with the wall surface around the protective cover, which will cause wear and tear over time; Therefore, the existing grinding machines cannot meet the usage requirements well and need further improvement.

[0004] Therefore, it is necessary to invent a corner polishing machine. Utility Model Content

[0005] Therefore, this utility model provides a corner polishing machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a corner sander, including a sander body with a handle fixed on it. The sander body includes a motor housing with a motor fixed inside. A protective cover is installed at the bottom of the motor housing via an elastic micro-adjustment component. A sanding disc is fixed to the motor output shaft with screws. Sandpaper is attached to the bottom of the sanding disc via Velcro. Both the sanding disc and the sandpaper are located inside the protective cover. An anti-wear component is detachable from the protective cover. A light ring base is fixed to the bottom of the protective cover via a lifting adjustment component. A corner sanding component is provided on the light ring base, and an auxiliary moving component is fixed to the bottom of the light ring base.

[0007] Preferably, the corner sanding component includes three notches, which are respectively opened at the front end and the two sides of the lamp ring base, and the sandpaper extends three notches from the front end and the two sides.

[0008] Preferably, the auxiliary moving component includes an adhesive reservoir, which is located at the bottom of the lamp ring base and between three notches.

[0009] Preferably, the auxiliary moving component further includes segmented stainless steel strips, which are bonded to the bottom of three adhesive reservoirs, and the bottom of the segmented stainless steel strips has a smooth surface.

[0010] Preferably, the wear-resistant component includes three sets of snap-fit ​​slots, which are respectively fixed to the front end and both sides of the protective cover. Each set of snap-fit ​​slots has two slots, and a wear-resistant block is fastened between the two slots in the same set.

[0011] Preferably, the three wear-resistant blocks are located directly above the three notches, and the wear-resistant blocks are made of nylon or transparent PC material.

[0012] Preferably, the elastic fine-tuning component includes a connecting plate, which is fixed to the bottom of the motor housing. Each of the four corners of the connecting plate has a first oblong hole, and a screw passes vertically through each of the first oblong holes.

[0013] Preferably, each of the four corners at the top of the protective cover is vertically fixed with a screw seat, and the bottom ends of the four screws are threaded to the top of the four screw seats respectively.

[0014] Preferably, the elastic fine-tuning component further includes a spring, the top end of which is fixed at the center of the bottom of the connecting plate, and the bottom end of which is fixed at the center of the top of the protective cover.

[0015] Preferably, the lifting adjustment assembly includes four threaded connectors, which are respectively fixed at the four corners of the top of the protective cover. Each of the four corners of the top of the lamp ring base is fixed with a connecting piece. Each connecting piece has a second oblong hole vertically opened at its top. Each second oblong hole has a tightening screw threaded through it. The tightening screws are respectively threaded onto the threaded connectors.

[0016] The beneficial effects of this utility model are as follows: By using the sander body, handle, motor box, motor, elastic fine-tuning component, protective cover, sanding disc, sandpaper, light ring base, corner sanding component, auxiliary moving component, and anti-wear component in combination, it can not only achieve the function of wall sanding, but also effectively sand the corner seams. It can also effectively reduce the friction between the protective cover and the wall, thus facilitating the movement of the sander during the sanding process. It can also effectively protect the area around the protective cover, thus effectively preventing the sander from being worn by impacting the wall when sanding inside corners. The protective cover can also be elastically floating, thus achieving the fine-tuning function. It does not twist when sanding inside corners and can be used with sandpaper of different thicknesses. It has rich functions, good practicality, and is suitable for promotion. Attached Figure Description

[0017] Figure 1 A three-dimensional structural view provided for this utility model; Figure 2A three-dimensional view of the grinding machine body from the main view direction provided by this utility model; Figure 3 A partial three-dimensional view of the grinding machine body provided by this utility model; Figure 4 A perspective view of the grinding machine body from a bottom-view perspective provided by this utility model; Figure 5 This is a schematic diagram of the internal structure of the protective cover from a downward viewing angle provided by this utility model.

[0018] In the diagram: 1. Grinding machine body; 2. Handle; 3. Motor housing; 4. Motor; 5. Protective cover; 6. Grinding disc; 7. Velcro; 8. Sandpaper; 9. Notch; 10. Glue container; 11. Segmented stainless steel strip; 12. Clip groove; 13. Wear-resistant block; 14. Connecting plate; 15. First oblong hole; 16. Screw; 17. Screw seat; 18. Spring; 19. Light ring base; 20. Threaded connector; 21. Connecting piece; 22. Second oblong hole; 23. Tightening screw; 24. Pressure plate; 25. Fixing screw. Detailed Implementation

[0019] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0020] Please refer to the appendix. Figures 1-5 The corner sander provided by this utility model includes a sander body 1, a handle 2 fixed on the sander body 1, and a motor housing 3. It should be noted that the motor housing 3 is rotatably connected to the end of the handle 2. A motor 4 is fixed inside the motor housing 3. A protective cover 5 is installed at the bottom of the motor housing 3 through an elastic micro-adjustment component. A sanding disc 6 is fixed to the output shaft of the motor 4 by screws. Sandpaper 8 is attached to the bottom of the sanding disc 6 by Velcro 7, so that the sandpaper 8 is easy to disassemble and replace. Both the sanding disc 6 and the sandpaper 8 are located inside the protective cover 5. A wear-resistant component can also be detached on the protective cover 5. A lamp ring base 19 is fixed to the bottom of the protective cover 5 through a lifting adjustment component. A corner sanding component is provided on the lamp ring base 19. An auxiliary moving component is fixed to the bottom of the lamp ring base 19. Specifically, when the motor 4 is running, the sandpaper 8 can be driven to rotate at high speed through the sanding disc 6. The operator can control the movement of the sander body 1 on the wall through the handle 2, so that the high-speed rotating sandpaper 8 can sand the wall, thereby realizing the function of wall sanding. The corner sanding component includes three notches 9, which are respectively opened at the front end and the two sides of the lamp ring base 19. The front end and the two sides of the sandpaper 8 extend out three notches 9 respectively. Specifically, under the action of the three notches 9, the high-speed rotating sandpaper 8 can be exposed, so that the corner seam can be sanded well. The auxiliary moving component includes an adhesive reservoir 10, which is located at the bottom of the lamp ring base 19 and between three notches 9. The auxiliary moving component also includes a segmented stainless steel strip 11, which is bonded to the bottom of the three adhesive reservoirs 10. The bottom of the segmented stainless steel strip 11 is smooth. Specifically, the smooth bottom of the segmented stainless steel strip 11 can effectively reduce the friction between the lamp ring base 19 and the wall, thereby effectively reducing the friction between the protective cover 5 and the wall, thus facilitating the movement of the grinder body 1 during the grinding process. The wear-resistant component includes three sets of snap-fit ​​slots 12, which are fixed to the front end and both sides of the protective cover 5. Each set of snap-fit ​​slots 12 consists of two slots, and a wear-resistant block 13 is fastened between the two slots 12 in the same set. The three wear-resistant blocks 13 are located directly above the three notches 9. The wear-resistant blocks 13 are made of nylon or transparent PC material. Specifically, the nylon wear-resistant blocks 13 can effectively protect the area around the protective cover 5, thereby effectively preventing the grinder from being worn by impacting the wall when grinding the inside corner. The wear-resistant blocks 13 are also easy to disassemble and replace. The elastic fine-tuning component includes a connecting plate 14, which is fixed to the bottom of the motor housing 3. Each of the four corners of the connecting plate 14 has a first oblong hole 15, through which a screw 16 is vertically inserted. Each of the four corners of the top of the protective cover 5 has a screw seat 17 vertically fixed. The bottom ends of the four screws 16 are threaded to the tops of the four screw seats 17, allowing the protective cover 5 to float vertically at the bottom of the connecting plate 14. The elastic fine-tuning component also includes a spring 18, the top of which is fixed to the center of the bottom of the connecting plate 14, and the bottom end of which is fixed to the center of the top of the protective cover 5. It should be noted that a pressure plate 24 and a fixing screw 25 are fixed to the center of the top of the protective cover 5, allowing the spring 18 to be pressed and fixed to the center of the top of the protective cover 5 by the pressure plate 24. Specifically, under the action of the screws 16, screw seats 17, and spring 18, the protective cover 5 can be elastically floated, thus achieving a fine-tuning function. Furthermore, it eliminates the need for tightening at corners, offering a rich set of functions. The lifting and adjusting assembly includes four threaded connectors 20, which are fixed at the four corners of the top of the protective cover 5. Connecting pieces 21 are fixed at the four corners of the top of the lamp ring base 19. Each connecting piece 21 has a vertically protruding second oblong hole 22 at its top, through which a tightening screw 23 passes. The tightening screws 23 are threaded onto the threaded connectors 20. Specifically, under the tightening action of the tightening screws 23, the lamp ring base 19 can be fixed to the bottom of the protective cover 5 via the connecting pieces 21. Furthermore, under the action of the second oblong holes 22, the connecting pieces 21 can be adjusted in height. Operators can tighten or loosen the tightening screws 23 to fix the connecting pieces 21 at different positions, thus effectively adjusting the height of the lamp ring base 19 to accommodate sandpaper 8 of different thicknesses.

[0021] The usage process of this utility model is as follows: During use, the operator first lifts the grinder body 1 using handle 2 and places it on the wall. Then, the power cord is plugged in (not shown in the figure), and the motor 4 is started. When the motor 4 is running, the sandpaper 8 is driven to rotate at high speed via the grinding disc 6. The operator can control the movement of the grinder body 1 on the wall using handle 2, thereby allowing the high-speed rotating sandpaper 8 to grind the wall surface, thus achieving the function of wall grinding. The segmented stainless steel strip 11 with a smooth bottom surface effectively reduces the friction between the lamp ring base 19 and the wall surface, making it convenient to move the grinder body 1 during grinding. Furthermore, the three notches 9 allow for high-speed rotation... The exposed sandpaper 8 allows for effective sanding of corners and seams. The nylon wear-resistant block 13 provides excellent protection around the protective cover 5, preventing wear from impact with the wall surface when sanding inside corners. The wear-resistant block 13 is easy to disassemble and replace. The protective cover 5 can be elastically floated and installed using the connecting plate 14, screw 16, screw seat 17, and spring 18, enabling fine-tuning. Sanding inside corners is effortless. Furthermore, operators can tighten or loosen the screw 23 to fix the connecting piece 21 in different positions, allowing for height adjustment of the lamp ring base 19. This makes it suitable for sandpaper 8 of varying thicknesses, offering a wide range of functions.

[0022] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art can modify this utility model or modify it into an equivalent technical solution using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solution of this utility model are within the scope of protection claimed by this utility model.

Claims

1. An angle grinder, comprising a grinder body (1), wherein a handle (2) is fixed on the grinder body (1), characterized in that: The grinding machine body (1) includes a motor housing (3), a motor (4) is fixed inside the motor housing (3), a protective cover (5) is installed at the bottom of the motor housing (3) by means of an elastic fine adjustment component, a grinding disc (6) is fixed to the output shaft of the motor (4) by screws, and sandpaper (8) is fixed to the bottom of the grinding disc (6) by means of Velcro (7). The grinding disc (6) and sandpaper (8) are both located inside the protective cover (5). A wear-resistant component can also be detached on the protective cover (5). A lamp ring base (19) is fixed to the bottom of the protective cover (5) by means of a lifting adjustment component. A corner grinding component is provided on the lamp ring base (19), and an auxiliary moving component is fixed to the bottom of the lamp ring base (19). The corner sanding assembly includes three notches (9), which are respectively opened at the front end and the two sides of the lamp ring base (19), and the sandpaper (8) extends three notches (9) from the front end and the two sides respectively.

2. The corner polishing machine according to claim 1, characterized in that: The auxiliary moving component includes an adhesive reservoir (10), which is located at the bottom of the lamp ring base (19) and between three notches (9).

3. The corner polishing machine according to claim 2, characterized in that: The auxiliary moving component also includes a segmented stainless steel strip (11), which is bonded to the bottom of three glue tanks (10), and the bottom of the segmented stainless steel strip (11) has a smooth surface.

4. The corner polishing machine according to claim 1, characterized in that: The wear-resistant component includes three sets of snap-fit ​​slots (12). The three sets of snap-fit ​​slots (12) are fixed to the front end and both sides of the protective cover (5) respectively. Each set of snap-fit ​​slots (12) has two slots, and a wear-resistant block (13) is fastened between the two snap-fit ​​slots (12) in the same set.

5. The corner polishing machine according to claim 4, characterized in that: The three wear-resistant blocks (13) are located directly above the three notches (9), and the wear-resistant blocks (13) are made of nylon or transparent PC material.

6. The corner polishing machine according to claim 1, characterized in that: The elastic fine-tuning component includes a connecting plate (14), which is fixed to the bottom of the motor housing (3). The four corners of the connecting plate (14) are provided with first waist-shaped holes (15), and screws (16) are vertically inserted into each of the first waist-shaped holes (15).

7. The corner polishing machine according to claim 6, characterized in that: The protective cover (5) has four vertically fixed screw seats (17) at the top corners, and the bottom ends of the four screws (16) are threaded to the top of the four screw seats (17).

8. The corner polishing machine according to claim 6, characterized in that: The elastic fine-tuning component also includes a spring (18), the top end of which is fixed at the bottom center of the connecting plate (14), and the bottom end of which is fixed at the top center of the protective cover (5).

9. The corner polishing machine according to claim 1, characterized in that: The lifting adjustment assembly includes four threaded connectors (20), which are fixed at the four corners of the top of the protective cover (5). Connecting pieces (21) are fixed at the four corners of the top of the lamp ring base (19). The top of each connecting piece (21) is vertically provided with a second waist-shaped hole (22), and a tightening screw (23) passes through each second waist-shaped hole (22). The tightening screw (23) is screwed onto the threaded connector (20).

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