An electric angle grinder housing with adjustable guard angle

Abstract

The utility model relates to mechanical design field, and specifically is a kind of electric angle grinder shell of adjustable protection angle, including angle grinder body, the bottom rotation of angle grinder body is connected with rotating shaft, and the one end of rotating shaft is fixedly connected with polishing disc;The utility model is rotated through hollow ring block, is rotated through hollow ring block and drives multiple connecting columns, and is rotated through multiple connecting columns and drives connecting ring block, simultaneously through connecting ring block and drives protection shell to rotate, to realize the angle adjustment of protection shell, simultaneously still can be through the meshing of limiting block and limiting tooth ring and realize the limiting of protection shell, and through the setting of adjusting mechanism, the angle of adjustable range is larger compared to traditional connection mode while realizing the angle adjustable of protection shell, and self-locking method is more stable, and simultaneously because itself is mechanical structure, maintenance and maintenance frequency is also reduced to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of mechanical design, specifically an adjustable protective angle electric angle grinder housing. Background Technology

[0002] The housing of an electric angle grinder is a safety device that allows for flexible adjustment of the protective cover angle through a mechanical structure. Its core function is to dynamically block high-speed flying debris and sparks, ensuring that dangerous areas such as cutting and grinding are always covered under different working angles. At the same time, it improves the operator's field of vision and workpiece compatibility. This design takes into account the convenience of human-machine interaction while ensuring safety.

[0003] In existing technology, an electric angle grinder is a handheld power tool that uses a motor to drive a high-speed rotating grinding wheel or cutting disc for cutting, grinding, and polishing materials such as metal, stone, and wood. When grinding objects, it generates a lot of debris and sparks. Therefore, workers often install a casing on the surface of the angle grinder to make it easier to use. However, existing angle grinder casings are often fixed to the surface of the angle grinder using clips and bolts. Although this method can effectively fix the casing, the clip and bolt fixing method is relatively simple, and the limiting method relies on the plug holes. However, the number of plug holes is limited, and there are dead angles between the holes. This may make it difficult to effectively adjust the angle when grinding objects with tricky angles, which may make it difficult to adequately protect the worker and thus affect the worker's work efficiency. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, the fastening method using buckles and bolts is relatively simple, and the limiting method relies on the insertion holes. However, the number of insertion holes is limited, and there are dead angles between the holes. This makes it difficult to effectively adjust the angle when grinding objects with tricky angles, which makes it difficult to adequately protect the workers and may affect their work efficiency. This utility model proposes an adjustable protective angle electric angle grinder housing.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an adjustable protective angle electric angle grinder shell, including an angle grinder body, a rotating shaft rotatably connected to the bottom of the angle grinder body, a grinding disc fixedly connected to one end of the rotating shaft, a protective shell provided on the surface of the grinding disc, and an adjustment mechanism provided at the bottom of the angle grinder body.

[0006] The adjusting mechanism includes a hollow column, one end of which is fixedly connected to the bottom of the angle grinder body. The hollow column is sleeved on the surface of the rotating shaft. A first toothed ring is fixedly connected to the surface of the hollow column. A hollow ring block is rotatably connected to the bottom of the angle grinder body. A second rack is fixedly connected to the inner cavity of the hollow ring block. A connecting column is provided in the inner cavity of the hollow ring block. Multiple connecting columns are provided. Gears are fixedly connected to the surface of each of the multiple connecting columns. The teeth of the multiple gears mesh with the teeth of the first toothed ring and the second rack. A connecting plate is rotatably connected to the surface of the multiple connecting columns. Two connecting plates are provided. A connecting ring block is fixedly connected to the inner cavity of one of the connecting plates. The surface of the connecting ring block is fixedly connected to the inner cavity of the protective shell. A limit mechanism is provided on the surface of the connecting ring block.

[0007] Preferably, the limiting mechanism includes a connecting side plate, the top of which is fixedly connected to the bottom of the angle grinder body, a threaded rod is threadedly connected to the inner cavity of the connecting side plate, a limiting toothed ring is fixedly connected to the surface of the connecting ring block, a connecting rod is fixedly connected to the top of the connecting side plate, a limiting block is rotatably connected to the surface of the connecting rod, and the teeth of the limiting block mesh with the teeth of the limiting toothed ring.

[0008] Preferably, a mounting block is fixedly connected to the top of the connecting side plate, a spring is fixedly connected to one side of the mounting block, and one end of the spring is fixedly connected to one side of the limiting block.

[0009] Preferably, a sliding block is fixedly connected to the surface of one of the connecting plates, and multiple sliding blocks are provided. The inner cavity of the hollow ring block is provided with a sliding groove, and the surfaces of the multiple sliding blocks are slidably connected to the inner cavity of the sliding groove.

[0010] Preferably, each of the multiple connecting columns is fixedly connected to a reinforcing ring block. There are two reinforcing ring blocks, one of which is rotatably connected to the top of the connecting plate at its bottom, and the other of which is rotatably connected to the bottom of the connecting plate at its top.

[0011] Preferably, the inner cavity of the protective shell is slidably connected to an extension plate, and both the protective shell and the extension plate have limit holes on their surfaces. Multiple limit holes are provided, and one of the limit holes has a limit rod that is movably engaged in its inner cavity.

[0012] Preferably, both the protective shell and the protective plate have snap-fit ​​grooves on one side, and the protective shell has an installation plate on one side. A snap-fit ​​block is fixedly connected to one side of the installation plate. There are two snap-fit ​​blocks, and the surfaces of the two snap-fit ​​blocks are respectively snapped into the inner cavities of the two snap-fit ​​grooves.

[0013] Preferably, a dustproof plate is fixedly connected to the bottom of the hollow ring block, and a protective plate is movably bonded to the inner cavity of the protective shell.

[0014] Preferably, an L-shaped plate is fixedly connected to the bottom of the angle grinder body, and a limiting groove is formed on the surface of the hollow ring block. The surface of the L-shaped plate is slidably connected to the inner cavity of the limiting groove.

[0015] Preferably, a connecting base plate is fixedly connected to the top of the connecting side plate, and a support block is fixedly connected to the inner cavity of the connecting base plate. The inner cavity of the support block is rotatably connected to the surface of the threaded rod.

[0016] The advantages of this utility model are:

[0017] This invention achieves angle adjustment of the protective shell by rotating a hollow ring block, which in turn drives multiple connecting columns to rotate, and these connecting columns in turn drive the connecting ring block to rotate. Simultaneously, the connecting ring block drives the protective shell to rotate, thus enabling angle adjustment. Furthermore, the engagement of a limiting block and a limiting toothed ring provides positioning of the protective shell. Compared to traditional connection methods, this adjustment mechanism offers a wider range of adjustable angles and a more stable self-locking mechanism. Being a mechanical structure, it also reduces maintenance frequency. This addresses the limitations of simple snap-fit ​​and bolt-fixing methods, which rely on insertion holes with a limited number and dead angles. These limitations can hinder effective angle adjustment when grinding objects with difficult angles, compromising worker safety and potentially impacting work efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the L-shaped plate and the limiting groove of this utility model;

[0021] Figure 3 This is a schematic diagram of the rotating shaft and reinforcing ring block of this utility model;

[0022] Figure 4This is a schematic diagram of the structure of the limiting toothed ring and the limiting block of this utility model;

[0023] Figure 5 This is a cross-sectional view of the grinding disc and extension plate of this utility model.

[0024] Figure 6 This is a schematic diagram of the limiting hole and limiting rod of this utility model.

[0025] In the diagram: 1. Angle grinder body; 2. Rotating shaft; 3. Grinding disc; 4. Protective shell; 5. Adjustment mechanism; 501. Hollow column; 502. First gear ring; 503. Hollow ring block; 504. Second rack; 505. Gear; 506. Connecting column; 507. Connecting plate; 508. Connecting ring block; 509. Limiting mechanism; 5091. Connecting side plate; 5092. Threaded rod; 5093. Limiting... Positioning ring; 5094, connecting rod; 5095, limiting block; 6, L-shaped plate; 7, limiting groove; 8, sliding block; 9, sliding groove; 10, reinforcing ring block; 11, dustproof plate; 12, extension plate; 13, limiting hole; 14, limiting rod; 15, protective plate; 16, mounting plate; 17, snap-fit ​​block; 18, mounting block; 19, spring; 20, connecting base plate; 21, support block; 22, snap-fit ​​groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0027] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0028] This application discloses an adjustable protective angle housing for an electric angle grinder. (Refer to...) Figure 1 and Figure 2 An adjustable protective angle electric angle grinder housing includes an angle grinder body 1, a rotating shaft 2 rotatably connected to the bottom of the angle grinder body 1, a grinding disc 3 fixedly connected to one end of the rotating shaft 2, a protective shell 4 provided on the surface of the grinding disc 3, and an adjustment mechanism 5 provided at the bottom of the angle grinder body 1.

[0029] The adjusting mechanism 5 includes a hollow column 501, one end of which is fixedly connected to the bottom of the angle grinder body 1. The hollow column 501 is sleeved on the surface of the rotating shaft 2. A first toothed ring 502 is fixedly connected to the surface of the hollow column 501. A hollow ring block 503 is rotatably connected to the bottom of the angle grinder body 1. A second toothed rack 504 is fixedly connected to the inner cavity of the hollow ring block 503. A connecting column 506 is provided in the inner cavity of the hollow ring block 503. Multiple connecting columns 506 are provided. Gears 505 are fixedly connected to the surface of 506. The teeth of multiple gears 505 mesh with the teeth of the first gear ring 502 and the second rack 504. The surfaces of multiple connecting columns 506 are rotatably connected to connecting plates 507. Two connecting plates 507 are provided. A connecting ring block 508 is fixedly connected to the inner cavity of one of the connecting plates 507. The surface of the connecting ring block 508 is fixedly connected to the inner cavity of the protective shell 4. A limit mechanism 509 is provided on the surface of the connecting ring block 508.

[0030] The angle grinder body 1 can drive the rotating shaft 2 via a motor to rotate the grinding disc 3 at high speed, enabling cutting, grinding, and polishing of materials such as metal, stone, and wood. The protective shell 4 protects against sparks and debris generated during grinding. The angle grinder body 1 and rotating shaft 2 are existing technologies in this field and will not be elaborated upon here. The hollow column 501 provides mounting and connection for the first gear ring 502, while the hollow ring block 503, connected to the angle grinder body 1, provides connection for the second rack 504. The second rack 504 is connected to multiple gears 505, and the teeth of these gears mesh with the teeth of both the first gear ring 502 and the second rack 504. This ensures that when the hollow ring block 503 rotates, the meshing of the second rack 504 with the multiple gears 505 drives the grinding disc 3. Multiple gears 505 move along the edge of the second rack 504 and rotate around the first gear ring 502. The connecting post 506 connects to the gears 505 to provide a connection between the two connecting plates 507. Both connecting plates 507 can connect and limit the multiple connecting posts 506. The connecting ring block 508 connects to the connecting plates 507 to provide a mounting function for the protective shell 4. When the multiple gears 505 rotate, they will drive the multiple connecting posts 506 to rotate synchronously. The multiple connecting posts 506 will drive the connecting plates 507 and the connecting ring block 508 to rotate synchronously. When the connecting ring block 508 rotates, it will drive the protective shell 4 to rotate synchronously, thereby realizing the angle adjustment of the protective shell 4. At the same time, the connecting ring block 508 can limit the protective shell 4, so that the protective shell 4 can be fixed.

[0031] Reference Figure 2 and Figure 4The limiting mechanism 509 includes a connecting side plate 5091, the top of which is fixedly connected to the bottom of the angle grinder body 1. A threaded rod 5092 is threadedly connected to the inner cavity of the connecting side plate 5091. A limiting toothed ring 5093 is fixedly connected to the surface of the connecting ring block 508. A connecting rod 5094 is fixedly connected to the top of the connecting side plate 5091. A limiting block 5095 is rotatably connected to the surface of the connecting rod 5094. The teeth of the limiting block 5095 mesh with the teeth of the limiting toothed ring 5093. The angle grinder body 1 provides installation and connection for the connecting side plate 5091. The connecting side plate 5091 is connected to the threaded rod 5092 and the connecting rod 5094. Simultaneously, the connecting rod 5094... The limiting block 5095, through its installation and connection, allows the limiting block 5095 to rotate around the connecting rod 5094 when the threaded rod 5092 is rotated by the operator. The limiting toothed ring 5093 is connected to the connecting ring block 508, and the teeth of the limiting toothed ring 5093 mesh with the teeth of the limiting block 5095. When the limiting block 5095 is pushed and its teeth mesh with the limiting toothed ring 5093, the limiting toothed ring 5093 is limited, thereby fixing the connecting ring block 508. This achieves the limiting function of the protective shell 4, allowing the protective shell 4 to better protect the operator.

[0032] Reference Figure 2 and Figure 3 A mounting block 18 is fixedly connected to the top of the connecting side plate 5091. A spring 19 is fixedly connected to one side of the mounting block 18. One end of the spring 19 is fixedly connected to one side of the limiting block 5095. The connecting side plate 5091 serves to install the spring 19 by connecting to the mounting block 18. The spring 19 is connected to the limiting block 5095. When the threaded rod 5092 stops pushing the limiting block 5095, the spring 19 will drive the limiting block 5095 to elastically reset. This allows the operator to cancel the limiting mechanism 509's limitation on the protective shell 4 without manually moving the limiting block 5095.

[0033] Reference Figure 3 and Figure 5 One of the connecting plates 507 has a sliding block 8 fixedly connected to its surface. Multiple sliding blocks 8 are provided. The inner cavity of the hollow ring block 503 has a sliding groove 9. The surfaces of multiple sliding blocks 8 are slidably connected to the inner cavity of the sliding groove 9. One of the connecting plates 507 is connected to multiple sliding blocks 8 and can provide installation and connection for multiple sliding blocks 8. At the same time, by opening the sliding groove 9 inside the hollow ring block 503, the sliding blocks 8 can slide in the inner cavity of the sliding groove 9. The sliding blocks 8 can make the connecting plate 507 more stable and smooth when it rotates.

[0034] Reference Figure 3 and Figure 5 Each of the multiple connecting posts 506 has a reinforcing ring block 10 fixedly connected to its surface. There are two reinforcing ring blocks 10. The bottom of one reinforcing ring block 10 is rotatably connected to the top of the connecting plate 507, and the top of the other reinforcing ring block 10 is rotatably connected to the bottom of the connecting plate 507. The connecting posts 506 can provide installation and connection for the reinforcing ring blocks 10. The reinforcing ring blocks 10 are connected to the connecting plate 507. The setting of the reinforcing ring blocks 10 can provide support for the multiple connecting posts 506, so that the connecting posts 506 can rotate more smoothly and are less prone to shaking.

[0035] Reference Figure 5 and Figure 6 An extension plate 12 is slidably connected to the inner cavity of the protective shell 4. Limiting holes 13 are provided on the surfaces of both the protective shell 4 and the extension plate 12. Multiple limiting holes 13 are provided. The inner cavity of one of the limiting holes 13 is movably engaged with a limiting rod 14. The protective shell 4 is connected to the extension plate 12. When the staff needs to slightly expand the protection range of the protective shell 4, the extension plate 12 can be pulled out from the inside of the protective shell 4, and the limiting hole 13 can be inserted into the limiting rod 14, which is opened on the surfaces of the extension plate 12 and the protective shell 4 at a suitable distance, thereby limiting the extension plate 12 and thus expanding the protection range of the protective shell 4.

[0036] Reference Figure 4 and Figure 5 Both the protective shell 4 and the protective plate 15 have snap-fit ​​grooves 22 on one side. The protective shell 4 has a mounting plate 16 on one side, and a snap-fit ​​block 17 is fixedly connected to one side of the mounting plate 16. There are two snap-fit ​​blocks 17, and the surfaces of the two snap-fit ​​blocks 17 are respectively movably snapped into the inner cavities of the two snap-fit ​​grooves 22. The mounting plate 16 is connected to the two snap-fit ​​blocks 17. By opening snap-fit ​​grooves 22 on one side of the protective shell 4 and the protective plate 15, the snap-fit ​​blocks 17 can be movably snapped into the snap-fit ​​grooves 22. The connection between the snap-fit ​​blocks 17 and the mounting plate 16 can strengthen the connection between the protective shell 4 and the protective plate 15, making it less likely for the protective plate 15 to detach, thus providing better protection for the protective shell 4. At the same time, the two snap-fit ​​blocks 17 are compatible with the two snap-fit ​​grooves 22, and the two snap-fit ​​blocks 17 can be inserted into the two snap-fit ​​grooves 22 respectively.

[0037] Reference Figure 5 and Figure 6A dustproof plate 11 is fixedly connected to the bottom of the hollow ring block 503, and a protective plate 15 is movably bonded to the inner cavity of the protective shell 4. The hollow ring block 503 provides installation and connection for the dustproof plate 11, while the dustproof plate 11 protects the interior of the hollow ring block 503, so that when the grinding disc 3 is performing grinding operations, the flying sparks and debris are not likely to directly enter the interior of the hollow ring block 503. At the same time, the protective shell 4 is connected to the protective plate 15, and the protective plate 15 can play a certain role in protecting the interior of the protective shell 4. When the grinding disc 3 is grinding, the flying sparks and debris are not likely to directly contact the interior of the protective shell 4, thereby causing damage to the interior of the protective shell 4.

[0038] Reference Figure 1 and Figure 2 An L-shaped plate 6 is fixedly connected to the bottom of the angle grinder body 1. A limiting groove 7 is opened on the surface of the hollow ring block 503. The surface of the L-shaped plate 6 is slidably connected to the inner cavity of the limiting groove 7. The angle grinder body 1 can provide installation and connection for the L-shaped plate 6, so that it can be used smoothly. At the same time, by opening the limiting groove 7 on the surface of the hollow ring block 503, the L-shaped plate 6 can slide in the inner cavity of the limiting groove 7. The L-shaped plate 6 can make the hollow ring block 503 more stable when rotating and less prone to shaking.

[0039] Reference Figure 1 and Figure 4 A connecting base plate 20 is fixedly connected to the top of the connecting side plate 5091. A support block 21 is fixedly connected to the inner cavity of the connecting base plate 20. The inner cavity of the support block 21 is rotatably connected to the surface of the threaded rod 5092. The connecting side plate 5091 can provide installation and connection for the connecting base plate 20. At the same time, the connecting base plate 20 is connected to the support block 21, and the support block 21 is connected to the threaded rod 5092. The support block 21 can provide support for the threaded rod 5092, so that the threaded rod 5092 can be more stable when moving and is less prone to deviation and shaking.

[0040] Working Principle: Before use, the operator can rotate the hollow ring block 503, causing it to drive the second rack 504 to rotate. Through the meshing of the second rack 504 with multiple gears 505, the gears 505 move along the edge of the rack 504, rotating around the first gear ring 502. When the gears 505 rotate, they drive multiple connecting posts 506 to rotate synchronously, which in turn drives the connecting plate 507 and the connecting ring block 508 to rotate synchronously. When the connecting ring block 508 rotates, it drives the protective shell 4 to rotate synchronously. The operator can then adjust the protective shell 4 to a suitable angle and position and rotate the threaded rod 5092. The movement of the threaded rod 5092 pushes the limit switch. Block 5095 moves, causing the teeth of the limiting block 5095 to mesh with the teeth of the limiting tooth ring 5093. At the same time, the self-locking capability of the threaded rod 5092 completes the limiting of the limiting block 5095, thereby limiting the protective shell 4 and making it difficult for the protective shell 4 to rotate. When it is necessary to readjust the angle of the protective shell 4, the threaded rod 5092 needs to be rotated in the opposite direction, so that the threaded rod 5092 cancels the pushing force on the limiting block 5095. At this time, the limiting block 5095 will be pulled by the spring 19 due to its connection with the spring 19 and disengage from the limiting tooth ring 5093. Then the protective shell 4 can continue to rotate. Through the setting of the adjustment mechanism 5, the angle of the protective shell 4 can be adjusted, and the adjustable angle range is larger, and the self-locking method is more stable.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An adjustable protective angle housing for an electric angle grinder, characterized in that: The angle grinder body (1) is rotatably connected to the bottom of the angle grinder body (1), and a grinding disc (3) is fixedly connected to one end of the rotating shaft (2). A protective shell (4) is provided on the surface of the grinding disc (3), and an adjustment mechanism (5) is provided at the bottom of the angle grinder body (1). The adjusting mechanism (5) includes a hollow column (501), one end of which is fixedly connected to the bottom of the angle grinder body (1). The hollow column (501) is sleeved on the surface of the rotating shaft (2). A first toothed ring (502) is fixedly connected to the surface of the hollow column (501). A hollow ring block (503) is rotatably connected to the bottom of the angle grinder body (1). A second toothed rack (504) is fixedly connected to the inner cavity of the hollow ring block (503). A connecting column (506) is provided in the inner cavity of the hollow ring block (503). Multiple connecting columns (506) are provided. Gears (505) are fixedly connected to the surface of each connecting post (506). The teeth of the multiple gears (505) mesh with the teeth of the first gear ring (502) and the second rack (504). A connecting plate (507) is rotatably connected to the surface of the multiple connecting posts (506). There are two connecting plates (507). A connecting ring block (508) is fixedly connected to the inner cavity of one of the connecting plates (507). The surface of the connecting ring block (508) is fixedly connected to the inner cavity of the protective shell (4). A limit mechanism (509) is provided on the surface of the connecting ring block (508).

2. The adjustable protective angle electric angle grinder housing according to claim 1, characterized in that: The limiting mechanism (509) includes a connecting side plate (5091), the top of which is fixedly connected to the bottom of the angle grinder body (1), a threaded rod (5092) is threadedly connected to the inner cavity of the connecting side plate (5091), a limiting toothed ring (5093) is fixedly connected to the surface of the connecting ring block (508), a connecting rod (5094) is fixedly connected to the top of the connecting side plate (5091), a limiting block (5095) is rotatably connected to the surface of the connecting rod (5094), and the teeth of the limiting block (5095) mesh with the teeth of the limiting toothed ring (5093).

3. The adjustable protective angle electric angle grinder housing according to claim 2, characterized in that: A mounting block (18) is fixedly connected to the top of the connecting side plate (5091), and a spring (19) is fixedly connected to one side of the mounting block (18). One end of the spring (19) is fixedly connected to one side of the limiting block (5095).

4. The adjustable protective angle electric angle grinder housing according to claim 1, characterized in that: One of the connecting plates (507) has a sliding block (8) fixedly connected to its surface. Multiple sliding blocks (8) are provided. The hollow ring block (503) has a sliding groove (9) in its inner cavity. The surfaces of multiple sliding blocks (8) are slidably connected to the inner cavity of the sliding groove (9).

5. The adjustable protective angle electric angle grinder housing according to claim 3, characterized in that: Each of the multiple connecting columns (506) has a reinforcing ring block (10) fixedly connected to its surface. There are two reinforcing ring blocks (10). The bottom of one of the reinforcing ring blocks (10) is rotatably connected to the top of the connecting plate (507), and the top of the other reinforcing ring block (10) is rotatably connected to the bottom of the connecting plate (507).

6. The adjustable protective angle housing for an electric angle grinder according to claim 2, characterized in that: The inner cavity of the protective shell (4) is slidably connected to an extension plate (12). Both the protective shell (4) and the extension plate (12) have limit holes (13) on their surfaces. Multiple limit holes (13) are provided, and one of the limit holes (13) has a limit rod (14) that is movably engaged in the inner cavity.

7. The adjustable protective angle electric angle grinder housing according to claim 4, characterized in that: Both the protective shell (4) and the protective plate (15) have snap-fit ​​grooves (22) on one side. The protective shell (4) has an installation plate (16) on one side. A snap-fit ​​block (17) is fixedly connected to one side of the installation plate (16). There are two snap-fit ​​blocks (17), and the surfaces of the two snap-fit ​​blocks (17) are respectively snap-fitted into the inner cavities of the two snap-fit ​​grooves (22).

8. The adjustable protective angle housing for an electric angle grinder according to claim 2, characterized in that: The bottom of the hollow ring block (503) is fixedly connected to a dustproof plate (11), and the inner cavity of the protective shell (4) is movably bonded with a protective plate (15).

9. The adjustable protective angle electric angle grinder housing according to claim 1, characterized in that: An L-shaped plate (6) is fixedly connected to the bottom of the angle grinder body (1). A limiting groove (7) is opened on the surface of the hollow ring block (503). The surface of the L-shaped plate (6) is slidably connected to the inner cavity of the limiting groove (7).

10. The adjustable protective angle housing of an electric angle grinder according to claim 2, characterized in that: The top of the connecting side plate (5091) is fixedly connected to the connecting base plate (20), and the inner cavity of the connecting base plate (20) is fixedly connected to the support block (21). The inner cavity of the support block (21) is rotatably connected to the surface of the threaded rod (5092).

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