An angle grinder with an adjustable guard mechanism

Abstract

The utility model relates to the technical field of angle grinder, concretely is an angle grinder with adjustable protection mechanism, including handheld angle grinder, in the handheld angle grinder, the protection shell outside the abrasive wheel axle is connected with the protection cover through the fixed assembly, the outer wall upside of protection cover is fixedly connected with the fixed link, the bottom fixed connection of fixed link has the arc shell, the bottom fixed connection has the protection cover, the bottom of protection cover is pasted with protection cover. This scheme can when adjusting the protection area of protection cover, rotate the rotating lever, the rotating lever drives the gear to rotate, the gear engages arc toothed plate to move in the process of rotating, arc toothed plate drives protection cover to move along the edge of protection cover, when moving to the specified position, protection cover provides more protection area, and then makes the protection area of protection cover extend, thereby solve the problem that the protection area of existing angle grinder protection cover is difficult to adjust according to actual operation.

Description

Technical Field

[0001] This utility model relates to the field of angle grinder technology, specifically to an angle grinder with an adjustable protective mechanism. Background Technology

[0002] An angle grinder, also known as a grinding machine or disc grinder, is an abrasive tool used for cutting and polishing fiberglass. It is a handheld power tool that uses fiberglass for cutting and polishing, and is mainly used for cutting, grinding, and brushing metals and stone.

[0003] Currently, most angle grinders on the market use semi-circular protective covers, but their protective range is fixed by molding at the factory and cannot be adjusted according to actual work needs. If large-area flat grinding is performed, flying debris and sparks can easily spread from the unprotected area to the surroundings, which may not only burn the operator, but also pose a safety hazard to surrounding equipment and flammable materials. Therefore, an angle grinder with an adjustable protective mechanism is needed. Utility Model Content

[0004] The purpose of this invention is to provide an angle grinder with an adjustable protective mechanism to solve the problem mentioned in the background art that the protective area of ​​the existing angle grinder protective cover is difficult to adjust according to actual operation.

[0005] To achieve the above objectives, this utility model provides the following technical solution, including a handheld angle grinder. In the handheld angle grinder, a protective cover is connected to the outer protective shell of the grinding wheel shaft via a fixing component. A fixing rod is fixedly connected to the upper side of the outer wall of the protective cover. An arc-shaped shell is fixedly connected to the bottom of the fixing rod, and the protective cover is fixedly connected to the bottom of the fixed rod. The bottom of the protective cover fits against the protective cover. An arc-shaped toothed plate is movably connected to the inner cavity of the arc-shaped shell. The bottom of the arc-shaped toothed plate is fixedly connected to the protective cover. A gear meshes with the side of the arc-shaped toothed plate away from the rotor of the handheld angle grinder. A rotating rod is fixedly connected to the inner cavity of the gear. The upper and lower sides of the rotating rod are connected to the inner cavity of the arc-shaped shell via bearings. The top of the rotating rod extends to the outer side of the arc-shaped shell.

[0006] Preferably, the fixing component includes an elastic metal sheet, the rear side of which is fixedly connected to the protective cover, the inner cavity of which is tightly fitted to the handheld angle grinder, and a fastener is provided on the elastic metal sheet. The inner cavity of the fastener has a threaded hole, and a bolt is threaded into the inner cavity of the threaded hole.

[0007] Preferably, both sides of the protective cover are fixedly connected to limit blocks, and a limit groove is formed at the joint between the protective cover and the protective cover, with the inner cavity of the limit groove being movably connected to the limit block.

[0008] Preferably, a baffle is fixedly connected to the front side of the top of the arc-shaped shell, and the baffle is made of stainless steel.

[0009] Preferably, a window is provided on one side of the arc-shaped shell, and a tempered glass plate is provided inside the window.

[0010] Preferably, an auxiliary handle is fixedly connected to the front right side of the handheld angle grinder, and the surface of the auxiliary handle is provided with anti-slip texture.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This solution allows for adjusting the protective area of ​​the guard by rotating a lever, which in turn drives a gear to rotate. During this rotation, the gear engages with an arc-shaped toothed plate, causing the guard to move along its edge. When the guard reaches the designated position, it provides more protective area, thus extending its protective coverage. This solves the problem that the protective area of ​​existing angle grinder guards is difficult to adjust according to actual operations. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the single structure of this utility model; Figure 3 This is a partial structural cross-sectional view of the present invention; Figure 4 This is a partial structural side view of the present invention.

[0013] In the picture: 1. Handheld angle grinder; 2. Protective cover; 3. Fixing rod; 4. Arc-shaped shell; 5. Protective cover; 6. Arc-shaped toothed plate; 7. Gear; 8. Rotating rod; 9. Elastic metal sheet; 10. Fastener; 11. Limiting block; 12. Baffle; 13. Tempered glass plate; 14. Auxiliary grip. Detailed Implementation

[0014] 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 protection scope of the present utility model.

[0015] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] Example 1: Please see Figure 1-4 This utility model provides a technical solution: an angle grinder with an adjustable protective mechanism, including a handheld angle grinder 1. In the handheld angle grinder 1, a protective cover 2 is connected to the protective shell outside the grinding wheel shaft via a fixing component. A fixing rod 3 is fixedly connected to the upper side of the outer wall of the protective cover 2. An arc-shaped shell 4 is fixedly connected to the bottom of the fixing rod 3. A protective cover 5 is fixedly connected to the bottom of the arc-shaped shell 4. The bottom of the protective cover 5 is in contact with the protective cover 2. An arc-shaped toothed plate 6 is movably connected to the inner cavity of the arc-shaped shell 4. The bottom of the arc-shaped toothed plate 6 is fixedly connected to the protective cover 5. A gear 7 meshes with the side of the arc-shaped toothed plate 6 away from the rotor of the handheld angle grinder 1. A rotating rod 8 is fixedly connected to the inner cavity of the gear 7. The upper and lower sides of the rotating rod 8 are connected to the inner cavity of the arc-shaped shell 4 via bearings. The top of the rotating rod 8 extends to the outer side of the arc-shaped shell 4.

[0017] Analysis of the above: In use, after the operator pushes the sliding mechanism on the handheld angle grinder 1 to start the motor, the driving gear connected to the motor's rotating shaft rotates, simultaneously engaging the driven gear on the grinding wheel shaft. At this time, the grinding wheel shaft and the grinding wheel at its end rotate with the driven gear, and work can begin as the grinding wheel rotates. (Note: The above structure and the connection method between the internal circuit and the motor in the handheld angle grinder 1 all adopt mature existing structures, and related details are not elaborated here.) When it is necessary to adjust the protective area of ​​the protective cover 2, the operator rotates the rotating rod 8, which drives... Gear 7 rotates, and during the rotation, it meshes with the arc-shaped toothed plate 6 to move. The arc-shaped toothed plate 6 drives the protective cover 5 to move. The arc-shaped toothed plate 6 moves within the arc-shaped shell 4. The arc-shaped shell 4, through its own arc-shaped area, ensures that the arc-shaped toothed plate 6 can only move along an arc-shaped trajectory, thereby causing the protective cover 5 to move along the edge of the protective cover 2. When it moves to the designated position, the protective cover 5 provides more protective area, thus extending the protective area of ​​the protective cover 2. This solves the problem that the protective area of ​​the existing angle grinder protective cover 2 is difficult to adjust according to actual operation.

[0018] Example 2: Please see Figure 1-4The present invention provides a technical solution based on Embodiment 1: the fixing component includes an elastic metal sheet 9, the rear side of the elastic metal sheet 9 is fixedly connected to the protective cover 2, the inner cavity of the elastic metal sheet 9 is tightly fitted to the handheld angle grinder 1, a fastener 10 is provided on the elastic metal sheet 9, the inner cavity of the fastener 10 is provided with a threaded hole, and a bolt is threadedly connected to the inner cavity of the threaded hole.

[0019] Analysis of the above content: The elastic metal sheet 9 itself has a certain deformation capacity. When the bolt is tightened, the fastener 10 can apply directional pressure to the elastic metal sheet 9, forcing the elastic metal sheet 9 to further adhere to the handheld angle grinder 1, transforming the elastic contact into rigid fixation, thereby fixing the protective cover 2. When the worker removes the bolt, the two fasteners 10 separate, and the elastic metal sheet 9 is no longer rigidly fixed. Then the worker can rotate the direction of the protective cover 2.

[0020] Example 3: Please see Figure 1-4 Based on Embodiment 1, this utility model provides a technical solution: both sides of the protective cover 2 are fixedly connected to limit blocks 11, and the protective cover 5 and the protective cover 2 are fitted with limit grooves, and the inner cavity of the limit grooves is movably connected to the limit blocks 11.

[0021] Analysis of the above content: By setting the limit block 11 and the limit groove in combination, the protective cover 5 moves and drives its own limit groove to move as well. The limit groove slides along the contour trajectory of the limit block 11, forcibly constraining the protective cover 5 to move only in the preset direction. In addition, it cooperates with the trapezoidal arc toothed plate 6 to avoid the offset caused by external force or assembly error.

[0022] Example 4: Please see Figure 1-4 Based on Embodiment 1, this utility model provides a technical solution: a baffle 12 is fixedly connected to the front side of the top of the arc-shaped shell 4, and the material of the baffle 12 is stainless steel.

[0023] Analysis of the above content: The baffle 12 is located on the front side of the top of the arc-shaped shell 4, so that the sparks generated by the handheld angle grinder 1 during use are blocked by the baffle 12, preventing them from splashing directly onto the rotating rod 8.

[0024] Example 5: Please see Figure 1-4 Based on Embodiment 1, this utility model provides a technical solution: a window is provided on one side of the arc-shaped shell 4, and a tempered glass plate 13 is provided in the inner cavity of the window.

[0025] Analysis of the above content: By setting the tempered glass plate 13, the staff can observe the meshing connection between the gear 7 and the arc-shaped tooth plate 6, and can promptly detect potential faults such as abnormal meshing clearance or foreign object jamming.

[0026] Example 6: Please see Figure 1-4 Based on Embodiment 1, this utility model provides a technical solution: an auxiliary handle 14 is fixedly connected to the front right side of the handheld angle grinder 1, and the surface of the auxiliary handle 14 is provided with anti-slip texture.

[0027] Analysis of the above content: By setting the auxiliary grip 14, a second grip support point can be provided for the worker. It can then cooperate with the main grip on the handheld angle grinder 1 to form a double-point fixed grip structure, reducing the probability of tool loss of control due to unstable grip.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An angle grinder with an adjustable protective mechanism, characterized in that, include: A handheld angle grinder (1) has a protective cover (2) connected to the outer protective shell of the grinding wheel shaft by a fixing component. A fixing rod (3) is fixedly connected to the upper side of the outer wall of the protective cover (2). An arc-shaped shell (4) is fixedly connected to the bottom of the fixing rod (3). A protective cover (5) is fixedly connected to the bottom of the arc-shaped shell (4). The bottom of the protective cover (5) is in contact with the protective cover (2). An arc-shaped toothed plate (6) is movably connected to the inner cavity of the arc-shaped shell (4). The bottom of the arc-shaped toothed plate (6) is fixedly connected to the protective cover (5). A gear (7) meshes with the side of the arc-shaped toothed plate (6) away from the rotor of the handheld angle grinder (1). A rotating rod (8) is fixedly connected to the inner cavity of the gear (7). The upper and lower sides of the rotating rod (8) are connected to the inner cavity of the arc-shaped shell (4) through bearings. The top of the rotating rod (8) extends to the outer side of the arc-shaped shell (4).

2. An angle grinder with an adjustable protective mechanism according to claim 1, characterized in that: The fixing component includes an elastic metal sheet (9), the rear side of which is fixedly connected to the protective cover (2), the inner cavity of which is tightly fitted to the handheld angle grinder (1), and a fastener (10) is provided on the elastic metal sheet (9). The inner cavity of the fastener (10) is provided with a threaded hole, and a bolt is threaded into the inner cavity of the threaded hole.

3. An angle grinder with an adjustable protective mechanism according to claim 1, characterized in that: Both sides of the protective cover (2) are fixedly connected to limit blocks (11), and a limit groove is opened at the joint between the protective cover (5) and the protective cover (2). The inner cavity of the limit groove is movably connected to the limit block (11).

4. An angle grinder with an adjustable protective mechanism according to claim 1, characterized in that: A baffle (12) is fixedly connected to the front side of the top of the arc-shaped shell (4), and the baffle (12) is made of stainless steel.

5. An angle grinder with an adjustable protective mechanism according to claim 1, characterized in that: A window is provided on one side of the arc-shaped shell (4), and a tempered glass plate (13) is provided in the inner cavity of the window.

6. An angle grinder with an adjustable protective mechanism according to claim 1, characterized in that: An auxiliary handle (14) is fixedly connected to the front right side of the handheld angle grinder (1), and the surface of the auxiliary handle (14) is provided with anti-slip texture.

Images