Convenient angle grinder with adjustable guard angle

Abstract

The utility model discloses a kind of convenient angle grinders of adjustable protection angle, belong to angle grinder technical field, and its technical scheme main points include handle, the end of handle is provided with driving head, the bottom of driving head is provided with output shaft, the bottom end of output shaft is fixedly connected with abrasive disc, the surface of output shaft is sleeved with fixed ring and fixed ring is fixedly connected in the bottom of driving head, by setting adjustable protection component, adjustable protection component has realized the flexible adjustment of arc-shaped protective cover angle, adjusting ring is connected on the surface of fixed ring, the limiting ring of its inner wall can be cooperated with the limiting groove of fixed ring surface, the rotation of adjusting ring is provided with stable guide, ensure that adjustment process is smooth, when rotating adjusting ring, arc-shaped protective cover can be synchronously rotated, protection angle can be changed without the aid of tool, it is convenient and efficient to operate, especially suitable for narrow space or the scene that work direction needs to be frequently adjusted, effectively improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of angle grinder technology, and in particular to a convenient angle grinder with adjustable protective angle. Background Technology

[0002] Angle grinders, as a common handheld power tool, are widely used in metal processing, construction and decoration, and machinery maintenance. They are mainly used to cut, grind, and polish materials such as metal, stone, and wood. Their core working parts are high-speed rotating grinding or cutting discs. During operation, when the grinding disc comes into contact with the workpiece, a large amount of debris and sparks are generated. If not properly protected, this can easily cause safety accidents. Therefore, an arc-shaped protective cover is an indispensable safety component for angle grinders.

[0003] Traditional angle grinders often have fixed or limited angle adjustment covers. Adjusting the angle often requires manually rotating the cover after removing the bolts with tools, and then tightening it again. This process is cumbersome and time-consuming, especially in confined spaces or scenarios where frequent adjustments to the work direction are needed, which greatly affects work efficiency.

[0004] Therefore, a convenient angle grinder with adjustable protective angle is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a convenient angle grinder with adjustable protective angle, which can solve the problem that the existing angle grinders' arc-shaped protective covers are mostly fixed or have a limited angle adjustment range. Their angle adjustment often requires the use of tools to remove the bolts and manually rotate the arc-shaped protective cover, and then tighten it again. The operation is cumbersome and time-consuming, especially in confined spaces or scenarios where the working direction needs to be frequently adjusted, which greatly affects work efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a convenient angle grinder with adjustable protective angle, including a handle, a drive head at the end of the handle, an output shaft at the bottom of the drive head, a grinding disc fixedly connected to the bottom end of the output shaft, a fixing ring sleeve fitted onto the surface of the output shaft and fixedly connected to the bottom of the drive head, a protective mechanism provided on the surface of the fixing ring sleeve, the protective mechanism including an adjustable protective component and a positioning component, the adjustable protective component including an adjusting ring, the adjusting ring sleeved on the surface of the fixing ring sleeve, an L-shaped rod fixedly connected to the surface of the adjusting ring, an arc-shaped protective cover provided at the bottom end of the L-shaped rod, a limit ring fixedly connected to the inner wall of the adjusting ring, and a limit groove for cooperating with the limit ring on the surface of the fixing ring sleeve.

[0007] Preferably, the positioning component includes a linkage ring and the linkage ring is fixedly connected to the top of the adjusting ring, and the linkage ring is sleeved on the surface of the fixed ring.

[0008] Preferably, a positioning rod passes through the interior of the linkage ring, and a positioning groove is formed on the surface of the fixing ring sleeve to cooperate with the positioning rod. The number of positioning grooves is set to be multiple and distributed in a ring.

[0009] Preferably, an end block is fixedly connected to the outside of the positioning rod, and a fastening tension spring is sleeved on one end of the positioning rod located outside the linkage ring. The two ends of the fastening tension spring are fixedly connected to the end block and the linkage ring, respectively.

[0010] Preferably, a connecting sleeve is fixedly connected to the middle of the top of the arc-shaped protective cover, and the connecting sleeve is sleeved on the surface of the bottom end of the L-shaped rod.

[0011] Preferably, the connecting sleeve has a connecting screw internally threaded, and the surface of the top end of the L-shaped rod has a screw hole, and the connecting screw is used in conjunction with the screw block.

[0012] Preferably, the surface of the handle is fitted with a grip sleeve, which is made of rubber.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This application sets up an adjustable protective component, which enables flexible adjustment of the angle of the arc-shaped protective cover. The adjusting ring is sleeved on the surface of the fixed ring, and the limiting ring on its inner wall can cooperate with the limiting groove on the surface of the fixed ring to provide stable guidance for the rotation of the adjusting ring, ensuring a smooth and stable adjustment process. When the adjusting ring is rotated, the arc-shaped protective cover can rotate synchronously. The protective angle can be changed without the aid of tools, making the operation convenient and efficient. It is especially suitable for confined spaces or scenarios where the working direction needs to be frequently adjusted, effectively improving work efficiency. 2. By setting up a positioning component, after the angle of the arc-shaped protective cover is adjusted, the positioning rod can be inserted into the corresponding positioning groove to limit the adjustment ring and prevent it from rotating due to vibration when the angle grinder is working. This avoids angle deviation and ensures that the arc-shaped protective cover can reliably block debris and sparks, greatly improving the safety of operation. Attached Figure Description

[0014] Figure 1 This is an overall structural diagram of the adjustable protective angle portable angle grinder of this utility model; Figure 2 This utility model Figure 1 A bottom view; Figure 3 This is a schematic diagram of the adjustable protective component of this utility model; Figure 4 This is a schematic diagram of the positioning component of this utility model; Figure 5This is a schematic diagram showing the connection between the L-shaped rod and the connecting sleeve of this utility model.

[0015] In the diagram, 1. Handle; 2. Drive head; 3. Output shaft; 4. Grinding disc; 5. Fixing ring; 6. Protective mechanism; 61. Adjustable protective assembly; 611. Adjusting ring; 612. L-shaped rod; 613. Arc-shaped protective cover; 614. Limiting ring; 62. Positioning assembly; 621. Linkage ring; 622. Positioning rod; 623. Positioning groove; 624. End block; 625. Fastening tension spring; 7. Limiting groove; 8. Connecting sleeve; 9. Connecting screw; 10. Screw hole; 11. Grip sleeve. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-5 The present invention provides the following technical solution: A portable angle grinder with adjustable protective angle includes a handle 1, a drive head 2 at the end of the handle 1, an output shaft 3 at the bottom of the drive head 2, a grinding disc 4 fixedly connected to the bottom end of the output shaft 3, a fixing ring 5 sleeved on the surface of the output shaft 3 and fixedly connected to the bottom of the drive head 2, a protective mechanism 6 on the surface of the fixing ring 5, the protective mechanism 6 including an adjustable protective component 61 and a positioning component 62, the adjustable protective component 61 including an adjusting ring 611 sleeved on the surface of the fixing ring 5, an L-shaped rod 612 fixedly connected to the surface of the adjusting ring 611, an arc-shaped protective cover 613 at the bottom end of the L-shaped rod 612, a limit ring 614 fixedly connected to the inner wall of the adjusting ring 611, and a limit groove 7 for cooperating with the limit ring 614 on the surface of the fixing ring 5.

[0018] In this embodiment: An adjustable protective component 61 is provided. The adjusting ring 611 is the core rotating component of the adjustable protective component 61, sleeved on the surface of the fixed ring 5. Through its own rotation, it can directly drive the connected L-shaped rod 612 and the arc-shaped protective cover 613 to synchronously change their angles, providing a basic carrier for adjusting the protective angle. The L-shaped rod 612 can transmit the rotational movement of the adjusting ring 611 to the arc-shaped protective cover 613, allowing the arc-shaped protective cover 613 to adjust its position synchronously with the rotation of the adjusting ring 611, ensuring that the arc-shaped protective cover 613 is in the protective position that fits against the grinding disc 4. The arc-shaped protective cover 613 directly realizes the protective function. The component with an arc design can effectively cover part of the grinding disc 4. When the grinding disc 4 rotates at high speed, it can block debris and sparks from flying, protecting the operator's safety. Its arc design can be adapted to the circular contour of the grinding disc 4, which can maximize the protection range. The limiting ring 614 can be used with the limiting groove 7 on the surface of the fixed ring sleeve 5 to play a guiding and limiting role. During the rotation of the adjusting ring 611, the limiting ring 614 is embedded in the limiting groove 7 and slides along the groove, ensuring that the adjusting ring 611 can only rotate around the axis of the fixed ring sleeve 5, avoiding deviation, shaking or falling off, and ensuring the smoothness of the adjustment process and the stability of the structure.

[0019] Specifically, such as Figure 4 As shown, the positioning component 62 includes a linkage ring 621, which is fixedly connected to the top of the adjusting ring 611. The linkage ring 621 is sleeved on the surface of the fixed ring sleeve 5.

[0020] Specifically, such as Figure 4 As shown, a positioning rod 622 passes through the inside of the linkage ring 621, and a positioning groove 623 that cooperates with the positioning rod 622 is opened on the surface of the fixing ring sleeve 5. The number of positioning grooves 623 is set to be multiple and distributed in a ring.

[0021] Specifically, such as Figure 4 As shown, an end block 624 is fixedly connected to the outside of the positioning rod 622. A fastening spring 625 is sleeved on one end of the positioning rod 622 located outside the linkage ring 621. The two ends of the fastening spring 625 are fixedly connected to the end block 624 and the linkage ring 621 respectively.

[0022] In this embodiment: By setting the positioning component 62, the linkage ring 621 is the basic connecting component of the positioning component 62. On the one hand, it can rotate synchronously with the adjusting ring 611 to ensure that the movement of the positioning component 62 and the adjustable protective component 61 is consistent. On the other hand, it can provide a mounting carrier for other positioning components such as the positioning rod 622, so that the positioning component 62 and the adjusting ring 611 form a whole, ensuring that the positioning action can accurately respond to the angle adjustment of the arc-shaped protective cover 613. The positioning rod 622 is the core component for realizing the positioning function. When the arc-shaped protective cover 613 is adjusted to the required angle, the positioning rod 622 can be inserted into the corresponding positioning groove 623 on the surface of the fixing ring sleeve 5. The rotation of the adjusting ring 611 and the linkage ring 621 is restricted by mechanical locking, thereby firmly locking the angle of the arc-shaped protective cover 613 and preventing the angle of the arc-shaped protective cover 613 from changing unexpectedly due to vibration when the angle grinder is working. Multiple positioning grooves 623 can provide multiple positioning points for the positioning rod 622. The ring distribution design is consistent with the rotation of the adjusting ring 611. The trajectory is compatible, ensuring that within the adjustment range of the arc-shaped protective cover 613, the corresponding positioning groove 623 can be found to achieve stable positioning, meeting the protection angle requirements under different operating scenarios. The end block 624 plays a role in force transmission and convenient operation. When it is necessary to adjust the angle of the arc-shaped protective cover 613, the operator can pull the end block 624 to move the positioning rod 622 outward, causing it to disengage from the positioning groove 623 and releasing the restriction on the adjustment ring 611. At the same time, the end block 624 also provides a fastening spring 625. The fixed end point ensures that the fastening spring 625 can stably apply tension to the positioning rod 622. The fastening spring 625 can generate continuous tension by its own elastic deformation, always pulling the positioning rod 622 towards the inside of the linkage ring 621, so that the positioning rod 622 can be tightly embedded in the positioning groove 623 in the non-adjustment state, enhancing the positioning firmness. When the end block 624 is loosened, the fastening spring 625 can automatically drive the positioning rod 622 to reset and re-lock into the positioning groove 623, realizing quick locking and improving the convenience of operation.

[0023] Specifically, such as Figure 5 As shown, a connecting sleeve 8 is fixedly connected to the middle of the top of the arc-shaped protective cover 613, and the connecting sleeve 8 is sleeved on the surface of the bottom end of the L-shaped rod 612.

[0024] Specifically, such as Figure 5 As shown, the connecting sleeve 8 has a connecting screw 9 connected to its internal thread, and the surface of the top end of the L-shaped rod 612 has a screw hole 10. The connecting screw 9 is used in conjunction with the screw block.

[0025] In this embodiment: Through the above settings, the connecting sleeve 8 can act as a bridge, quickly achieving the initial alignment and connection between the arc-shaped protective cover 613 and the L-shaped rod 612, providing a foundation for subsequent fastening and fixing. It also ensures the installation stability of the arc-shaped protective cover 613 on the L-shaped rod 612, preventing lateral swaying of the arc-shaped protective cover 613 during operation. After the connecting sleeve 8 is fitted onto the bottom end of the L-shaped rod 612, the connecting screw 9 is rotated to engage with the screw hole 10 on the top surface of the L-shaped rod 612, thus firmly fixing the arc-shaped protective cover 613 to the bottom surface of the L-shaped rod 612. This prevents the arc-shaped protective cover 613 from falling off or shifting due to vibration or other reasons during the operation of the angle grinder, ensuring the reliable performance of the protective function. At the same time, this threaded connection method also facilitates the disassembly and replacement of the arc-shaped protective cover 613 later. When it is necessary to replace the arc-shaped protective cover 613 with a different specification, simply unscrew the connecting screw 9. The operation is simple and convenient.

[0026] Specifically, such as Figure 1 As shown, a grip 11 is fitted onto the surface of the handle 1, and the grip 11 is made of rubber.

[0027] In this embodiment: With the above settings, the grip 11 is a component that directly contacts the operator's hand. It is made of rubber, which has good elasticity and anti-slip properties, increasing the friction between the hand and the handle 1. This effectively prevents slippage caused by vibration or sweaty hands during angle grinder operation, improving operational stability. At the same time, the rubber material has a certain cushioning effect, which can reduce the impact of vibration generated during angle grinder operation on the operator's hand, reduce hand fatigue caused by long-term operation, and improve operational comfort and safety.

[0028] Working principle: When the protective angle of the arc-shaped protective cover 613 needs to be adjusted, first pull the outer end block 624 of the positioning rod 622 outward. At this time, the fastening spring 625 will be stretched, and the positioning rod 622 will disengage from the positioning groove 623 on the surface of the fixing ring 5, releasing the limit on the adjusting ring 611. Then, rotate the adjusting ring 611, and the limiting ring 614 on the inner wall of the adjusting ring 611 will slide along the limiting groove 7 on the surface of the fixing ring 5. The adjusting ring 611 can drive the arc-shaped protective cover 613 to rotate synchronously through the L-shaped rod 612 until the arc-shaped protective cover 613 is adjusted to the appropriate angle and accurately aligned. During operation, the direction of flying debris is determined. Then, the end block 624 is released, and the fastening spring 625 will return to its original position and retract, pulling the positioning rod 622 inward so that the positioning rod 622 is re-engaged into the corresponding positioning groove 623, thus fixing the angle of the arc-shaped protective cover 613. After that, the power is turned on, and the device is held in hand. The switch on the handle 1 is pressed, and the drive head 2 will drive the output shaft 3 and the grinding disc 4 to rotate at high speed. The rotating grinding disc 4 is aligned with the workpiece to be processed, and cutting, grinding or polishing operations are performed as needed. During the operation, the arc-shaped protective cover 613 can always block debris and sparks, thereby achieving a protective effect.

[0029] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable angle grinder with adjustable protective angle, comprising a handle (1), characterized in that: The handle (1) is provided with a drive head (2) at its end. The drive head (2) is provided with an output shaft (3) at its bottom. The bottom end of the output shaft (3) is fixedly connected to a grinding disc (4). The surface of the output shaft (3) is fitted with a fixing ring (5) and the fixing ring (5) is fixedly connected to the bottom of the drive head (2). The surface of the fixing ring (5) is provided with a protective mechanism (6). The protective mechanism (6) includes an adjustable protective component (61) and a positioning component (62). The adjustable protective component (61) includes an adjusting ring (611). The adjusting ring (611) is fitted onto the surface of the fixing ring (5). The surface of the adjusting ring (611) is fixedly connected with an L-shaped rod (612). The bottom end of the L-shaped rod (612) is provided with an arc-shaped protective cover (613). The inner wall of the adjusting ring (611) is fixedly connected with a limiting ring (614). The surface of the fixing ring (5) is provided with a limiting groove (7) that cooperates with the limiting ring (614).

2. The portable angle grinder with adjustable protective angle according to claim 1, characterized in that: The positioning component (62) includes a linkage ring (621) and the linkage ring (621) is fixedly connected to the top of the adjusting ring (611). The linkage ring (621) is sleeved on the surface of the fixed ring sleeve (5).

3. A convenient angle grinder with adjustable protective angle according to claim 2, characterized in that: The linkage ring (621) has a positioning rod (622) running through its interior. The surface of the fixing ring sleeve (5) is provided with a positioning groove (623) that works in conjunction with the positioning rod (622). The number of positioning grooves (623) is set to be multiple and distributed in a ring.

4. A convenient angle grinder with adjustable protective angle according to claim 3, characterized in that: An end block (624) is fixedly connected to the outside of the positioning rod (622). A fastening spring (625) is sleeved on one end of the positioning rod (622) located outside the linkage ring (621). The two ends of the fastening spring (625) are fixedly connected to the end block (624) and the linkage ring (621) respectively.

5. A convenient angle grinder with adjustable protective angle according to claim 1, characterized in that: A connecting sleeve (8) is fixedly connected to the middle of the top of the arc-shaped protective cover (613), and the connecting sleeve (8) is sleeved on the surface of the bottom end of the L-shaped rod (612).

6. A convenient angle grinder with adjustable protective angle according to claim 5, characterized in that: The connecting sleeve (8) has a connecting screw (9) internally threaded, and the surface of the top end of the L-shaped rod (612) has a screw hole (10). The connecting screw (9) is used in conjunction with the screw block.

7. A convenient angle grinder with adjustable protective angle according to claim 1, characterized in that: The surface of the handle (1) is fitted with a grip sleeve (11), which is made of rubber.

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