Angle grinder with protective structure

By designing an adjustable protective structure on the angle grinder, and using a bellows-like component and a knob-adjustable protective plate to accommodate cutting blades of different thicknesses, the problem of existing protective covers being unable to adapt to cutting blades of different thicknesses is solved, achieving more efficient safety protection.

CN224239140UActive Publication Date: 2026-05-15YONGKANG LINGWEI ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YONGKANG LINGWEI ELECTRIC CO LTD
Filing Date
2025-06-18
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

The protective covers of existing angle grinders cannot accommodate cutting discs of different thicknesses, resulting in ineffective protection of operators from flying debris and sparks during the cutting process.

Method used

A protective structure was designed, including an accordion between a first protective plate and a second protective plate, connected by a rod and a spring. The position of the second protective plate is adjusted by using a knob to adjust the pull rope to accommodate cutting blades of different thicknesses. Combined with a baffle made of metal or stainless steel sheet material, it provides protection.

Benefits of technology

It effectively protects cutting discs of different thicknesses, enhances operational safety, reduces the harm of splatter to operators, and improves work efficiency and safety.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224239140U_ABST
    Figure CN224239140U_ABST
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Abstract

The utility model discloses an angle grinder with a protection structure, which comprises an angle grinder, a shell of the angle grinder is provided with a protection mechanism, the protection mechanism comprises a first protection plate, the first protection plate is provided with an organ part, the other side of the organ part is provided with a second protection plate, and the second protection plate is provided with a protection cover. A plurality of rod bodies and springs are arranged between the first protection plate and the second protection plate, the springs are located on the outer sides of the rod bodies, the organ parts are arranged between the first protection plate and the second protection plate, the rod bodies are arranged on the first protection plate and the second protection plate, the second protection plate is arranged on the rod bodies in a sliding mode, and the organ parts are arranged on the first protection plate and the second protection plate in a sliding mode. And the distance between the second protection plate and the first protection plate is driven by the contraction of the positioning pull rope through manual rotation of the knob on the second protection plate, so that the cutting blades with different thicknesses can be adapted.
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Description

Technical Field

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

[0002] Currently, angle grinders are a widely used type of power tool, mainly used for grinding, polishing, and cutting.

[0003] In existing technologies, cutting machines generate flying fragments and sparks during grinding, posing a danger to operators. Protective covers are installed on the outside of the cutting blade to block and protect against flying fragments and sparks. Since different working scenarios require the use of cutting blades of different thicknesses for grinding, operators must install protective covers that are compatible with the cutting blades of different thicknesses. For example, published document CN218658290U expands the protection range by setting an outer protective cover, an inner protective cover, a first protective plate, and a second protective plate, but it cannot solve the problem of protection for cutting blades of different thicknesses.

[0004] Therefore, the applicant submits this application. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing an angle grinder with a protective structure, which, through adjustment of the protective mechanism, is suitable for cutting discs of different thicknesses.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] An angle grinder with a protective structure includes an angle grinder, the outer shell of which is provided with a protective mechanism, the protective mechanism including a first protective plate, a bellows component on the first protective plate, a second protective plate on the other side of the bellows component, and a plurality of rods and springs between the first protective plate and the second protective plate, the springs being located on the outside of the rods.

[0008] In the above scheme, preferably, the output end of the angle grinder is provided with a cutting blade, and the protective mechanism is located outside the cutting blade.

[0009] In the above scheme, preferably, limit blocks are provided at both ends of the rod body, the limit blocks being a first limit block and a second limit block, the first limit block being fixedly disposed with the first protective plate, and the second protective plate being slidably disposed on the rod body.

[0010] In the above scheme, preferably, the first protective plate is provided with a pull rope, the second protective plate is provided with a knob, and the other end of the pull rope is provided on the knob.

[0011] In the above scheme, preferably, the organ component is an arc-shaped organ component.

[0012] In the above scheme, preferably, a first baffle is provided on the inner side of the first protective plate, and a second baffle is provided on the inner side of the second protective plate, which is located below the accordion component.

[0013] In the above scheme, preferably, the first baffle and the second baffle are arc-shaped baffles, and the materials of the first baffle and the second baffle can be metal or stainless steel sheets.

[0014] In the above scheme, preferably, the first protective plate and the second protective plate can be made of metal or stainless steel sheets.

[0015] In the above-mentioned scheme, preferably, the outer casing of the angle grinder is provided with an auxiliary handle.

[0016] The beneficial effects of this utility model are as follows: This utility model, through the setting of the accordion between the first protective plate and the second protective plate, and the provision of rods on the first and second protective plates, with the second protective plate slidably mounted on the rods, utilizes the manual rotation of the knob on the second protective plate to position the pull rope to retract and increase the distance between the second protective plate and the first protective plate, thus adapting to cutting blades of different thicknesses. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the present invention.

[0018] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.

[0019] Figure 3 This is a schematic diagram showing the positions of the knob and pull cord in this utility model.

[0020] Figure 4 for Figure 3 Enlarged diagram of point B in the middle.

[0021] Figure 5 This is a cross-sectional view of the present invention.

[0022] Figure 6 for Figure 5 Enlarged diagram of point C in the middle.

[0023] Figure 7 This is a schematic diagram of the accordion component, the first baffle, and the second baffle of this utility model. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0025] See Figures 1-7An angle grinder 1 with a protective structure includes an angle grinder 1, and a cutting blade 5 is provided at the output end of the angle grinder 1. Driven by the angle grinder 1, the cutting blade 5 rotates at an extremely high speed, thereby achieving grinding, grooving and precise cutting of various workpieces. During the operation, there will be problems of flying fragments and sparks. A protective mechanism is provided on the outside of the cutting blade 5.

[0026] The protective mechanism includes a first protective plate 101, which can be fixed to the mounting base of the angle grinder 1 by screws or clips. The first protective plate 101 can be a semi-circular plate. An accordion 2 is fixedly installed on the first protective plate 101. The accordion 2 is an arc-shaped accordion 2 that can adapt to the shape of the first protective plate 101 and can achieve the function of scaling. A second protective plate 102 is fixedly installed on the other side of the accordion 2. The second protective plate 102 can be an arc-shaped plate.

[0027] Specifically, multiple rods 3 are provided on the first protective plate 101 and the second protective plate 102, as shown in the figure. Two rods 3 are respectively located on both sides of the first protective plate 101 and the second protective plate 102. Limiting blocks are provided at both ends of the rods 3, namely the first limiting block 201 and the second limiting block 202. The first limiting block 201 is fixed to the outside of the first protective plate 101. The second protective plate 102 is slidably disposed on the rods 3. A spring 4 is provided between the first protective plate 101 and the second protective plate 102. The spring 4 is located outside the rods 3.

[0028] Furthermore, to enable adjustment of the second protective plate 102, a pull rope 6 is fixedly installed on the first protective plate 101, and a knob 7 is installed on the second protective plate 102. The other end of the pull rope is located on the knob 7, which can be manually rotated to position the length of the pull rope 6. The initial state of the bellows is the maximum distance between the first protective plate 101 and the second protective plate 102. It can be installed according to the work requirements. The distance of pulling the pull rope 6 can be adjusted by manually rotating the knob 7. The distance of pulling the pull rope 6 can be adjusted according to the thickness of the cutting blade 5. The second protective plate 102 slides inward through the rod 3, and the bellows 2 and spring 4 retract accordingly, reducing the distance between the first protective plate 101 and the second protective plate 102. This can accommodate cutting blades 5 of different thicknesses within the initial distance between the first protective plate 101 and the second protective plate 102.

[0029] In order to better block the fragments and sparks that fly out when the angle grinder 1 is working, a first baffle 301 is fixedly installed on the first protective plate 101, and a second baffle 302 is installed on the second protective plate 102. Both are located below the accordion component 2. The adjustment of the second protective plate 102 drives the adjustment of the second baffle 302.

[0030] Because the sparks or fragments that fly out are dangerous, the materials of the first protective plate 101, the second protective plate 102, the first baffle 301, and the second baffle 302 can be metal or stainless steel sheets. Metal is often used for the outer shell of the protective cover to provide basic protection and has a certain degree of impact resistance. Stainless steel sheets have excellent corrosion resistance and wear resistance, are suitable for harsh working environments, and can withstand the impact force brought by high-speed rotation. Special wear-resistant materials such as purple sandalwood can also be used. Some protective covers use this type of material, which emphasizes waterproof and dustproof functions and is suitable for specific scenarios. Corresponding materials can be used according to different scenarios.

[0031] An auxiliary handle 8 is also provided on the outer shell of the angle grinder 1. The auxiliary handle 8 can provide more stable operation and increase the convenience of operation. The auxiliary handle 8 can reduce vibration during operation, making the operation more stable, thereby improving work efficiency and safety. The auxiliary handle 8 can also help users better control the direction of the angle grinder 1.

[0032] Working principle: A bellows component 2 is provided between the first protective plate 101 and the second protective plate 102. The initial distance between the two is the maximum distance. When it is necessary to adjust the distance of the protective mechanism according to the thickness of the cutting blade 5, the distance of the pull rope 6 is adjusted by manually rotating the knob 7. The second protective plate 102 slides inward through the rod 3, the bellows component 2 and the spring 4 retract, and the second baffle 302 also moves inward to adapt to the protective effect of cutting blades 5 of different thicknesses. When it is necessary to reset the initial distance, the knob 7 is manually rotated to turn out the pull rope 6, the spring 4 and the bellows component 2 reset, and the second baffle 302 also resets.

[0033] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An angle grinder with a protective structure, comprising an angle grinder (1), characterized in that: The angle grinder (1) has a protective mechanism on its outer shell. The protective mechanism includes a first protective plate (101), on which a bellows component (2) is provided. On the other side of the bellows component (2), a second protective plate (102) is provided. Between the first protective plate (101) and the second protective plate (102), a plurality of rods (3) and springs (4) are provided. The springs (4) are located on the outside of the rods (3).

2. The angle grinder with a protective structure according to claim 1, characterized in that: The output end of the angle grinder (1) is provided with a cutting disc (5), and the protective mechanism is located outside the cutting disc (5).

3. The angle grinder with a protective structure according to claim 1, characterized in that: Limiting blocks are provided at both ends of the rod (3). The limiting blocks are a first limiting block (201) and a second limiting block (202). The first limiting block (201) is fixedly disposed with the first protective plate (101), and the second protective plate (102) is slidably disposed on the rod (3).

4. The angle grinder with a protective structure according to claim 1, characterized in that: The first protective plate (101) is provided with a pull rope (6), and the second protective plate (102) is provided with a knob (7). The other end of the pull rope (6) is provided on the knob (7).

5. The angle grinder with a protective structure according to claim 1, characterized in that: The organ component (2) is an arc-shaped organ component.

6. The angle grinder with a protective structure according to claim 1, characterized in that: The first protective plate (101) has a first baffle (301) on its inner side, and the second protective plate (102) has a second baffle (302) on its inner side, which is located below the accordion component (2).

7. The angle grinder with a protective structure according to claim 6, characterized in that: The first baffle (301) and the second baffle (302) are arc-shaped baffles, and the materials of the first baffle (301) and the second baffle (302) can be metal or stainless steel sheets.

8. The angle grinder with a protective structure according to claim 1, characterized in that: The first protective plate (101) and the second protective plate (102) can be made of metal or stainless steel sheets.

9. The angle grinder with a protective structure according to claim 1, characterized in that: An auxiliary handle (8) is provided on the outer casing of the angle grinder (1).