Angle grinder with protection function

By installing limiting and protective components on the angle grinder, the problems of unstable speed regulation and foreign object ingress were solved, thereby achieving stable speed and improved equipment protection.

CN224674563UActive Publication Date: 2026-08-25JINHUA & IND &TRADE SHARE CO LTD
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Patent Information

Application Number
CN202521834226.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-27
Publication Date
2026-08-25
Estimated Expiration
2035-08-27

AI Technical Summary

Technical Problem

Existing angle grinders lack an effective limiting structure during speed adjustment, resulting in unstable rotation speed and an inability to effectively prevent the entry of external foreign objects, affecting processing accuracy and equipment reliability.

Method used

Limiting components, including adjustment knobs, limiting gears, and elastic plungers, are installed on the angle grinder housing to ensure that the speed controller does not shift when vibrated or accidentally touched. At the same time, a shield and filter screen are installed on the housing to form multiple layers of protection to prevent foreign objects from entering.

Benefits of technology

This has improved the stability of the angle grinder's rotation speed and the processing accuracy, prevented the entry of foreign objects, and enhanced the equipment's operational reliability and protective effect.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224674563U_ABST
Patent Text Reader

Abstract

The utility model discloses an angle grinder with protection function, including grinder shell, be provided with the limiting assembly on the angle grinder shell, be provided with the protection assembly on the angle grinder shell, through the limiting assembly of setting up on the angle grinder shell, can be firmly kept in the set position after adjusting, even when being subjected to a certain degree of vibration or accidental touch, can ensure that the speed regulator does not displace, thereby guarantee the stability of the angular grinder speed, is favorable to realized the fine adjustment of angular grinder speed. The operator can adjust the speed easily through the adjusting knob according to different processing requirements, and the protection assembly arranged on the angle grinder shell can not only assist in shielding the transmission structure part through the shielding cover, but also can filter the air entering the inside of the angle grinder, so that the angle grinder forms a multi-layer protection barrier, effectively prevents external foreign matters from entering the inside of the angle grinder from different angles, and avoids equipment failure caused by foreign matters entering.
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Description

Technical Field

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

[0002] An angle grinder is a commonly used power tool, widely used in metal processing, construction, repair and DIY fields. It is mainly used for cutting, grinding, polishing and deburring operations, and is characterized by high efficiency, flexibility and strong adaptability.

[0003] However, the angle grinder lacks an effective limiting structure during speed adjustment, which makes the speed adjustment structure prone to loosening or misoperation when subjected to vibration or accidental contact, resulting in unstable speed, affecting processing accuracy and workpiece quality. At the same time, in actual use, the angle grinder cannot effectively prevent foreign objects from entering the interior of the angle grinder, affecting the normal operation of the equipment.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In response to the problems in related technologies, this utility model proposes an angle grinder with protective functions to solve the problems of existing angle grinders lacking an effective limiting structure during speed adjustment and being unable to effectively prevent external foreign objects from entering the angle grinder.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] An angle grinder with protective function includes an angle grinder housing, a limiting component on the angle grinder housing, a speed controller inside the angle grinder housing, an adjustment knob on the speed controller, an adjustment groove on the angle grinder housing, the adjustment knob inside the adjustment groove, a limiting gear on one side of the adjustment knob, a limiting block meshing with the teeth of the limiting gear, an elastic plunger on one side of the limiting block, one end of the elastic plunger being connected to the speed controller, and a protective component on the angle grinder housing.

[0008] Furthermore, in order to better protect the angle grinder, the protective components include a transmission structure inside the angle grinder housing, a shield at one end of the transmission structure, one side of the shield being connected to the angle grinder housing by screws, and multiple heat dissipation vents on the angle grinder housing and the shield, with filter plates installed inside the heat dissipation vents.

[0009] Furthermore, to better assist and protect workers during operation, the shield is equipped with a shaft lock button, and a protective cover is installed at one end of the shield via a screw.

[0010] Furthermore, in order to better utilize the angle grinder, an angle grinding blade is provided at one end of the transmission structure. The angle grinding blade is located inside the protective cover. The transmission structure is connected to multiple blade pressure plates, and one side of each blade pressure plate contacts one side of the angle grinding blade.

[0011] Furthermore, in order to better assist in the maintenance of the angle grinder, maintenance ports are provided on both sides of the angle grinder housing. A cover is installed inside the maintenance port, and the cover is connected to the inside of the maintenance port by screws. An auxiliary component is set inside the maintenance port.

[0012] Furthermore, in order to better control and use the angle grinder, the grip area of ​​the angle grinder housing is provided with multiple control slots, and the inside of the multiple control slots is equipped with control structures. Near the control structures, the grip area of ​​the angle grinder housing is provided with anti-slip grooves, and anti-slip blocks are installed inside the anti-slip grooves.

[0013] Furthermore, to better improve the stability of the angle grinder connection cable, a through hole is provided at one end of the angle grinder housing, and a protective sleeve is installed inside the through hole. A cable fixing plate is connected inside the angle grinder housing by screws.

[0014] The beneficial effects of this utility model are as follows: By setting a limiting component on the angle grinder housing, the speed controller can be stably maintained in the set position after adjustment. Even when subjected to a certain degree of vibration or accidental contact, it can be ensured that the speed controller does not shift, thereby ensuring the stability of the angle grinder speed. This facilitates fine adjustment of the angle grinder speed, allowing operators to easily adjust the speed by adjusting the knob according to different processing needs, effectively improving processing accuracy and workpiece quality. At the same time, the protective component set on the angle grinder housing can not only provide auxiliary shielding for the transmission structure through the shield, but also filter the air entering the angle grinder, forming a multi-layered protective barrier. This effectively prevents external foreign objects from entering the angle grinder from different angles, avoiding equipment failure caused by foreign object entry, improving the reliability of equipment operation, and ensuring the durability of the protective effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0016] Figure 1 This is a schematic diagram of the structure of an angle grinder with protective function according to an embodiment of the present utility model;

[0017] Figure 2 yes Figure 1A schematic diagram of the side structure;

[0018] Figure 3 This is a schematic diagram of the internal structure of the angle grinder housing of an angle grinder with protective function according to an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the limiting component structure of an angle grinder with protective function according to an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the protective component structure of an angle grinder with protective function according to an embodiment of the present utility model.

[0021] In the picture:

[0022] 1. Angle grinder housing; 2. Limiting components; 201. Speed ​​controller; 202. Adjustment knob; 203. Limiting gear; 204. Limiting block; 205. Elastic plunger; 3. Protective components; 301. Transmission structure; 302. Shield; 303. Filter screen; 4. Shaft lock button; 5. Protective cover; 6. Angle grinder blade; 7. Blade pressure plate; 8. Shield; 9. Auxiliary parts; 10. Control structure; 11. Anti-slip block; 12. Protective sleeve; 13. Wire fixing plate. Detailed Implementation

[0023] 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.

[0024] Example 1:

[0025] like Figures 1-4 As shown, an angle grinder with protective function according to an embodiment of the present utility model includes an angle grinder housing 1 for protecting the internal structure of the angle grinder. The angle grinder housing 1 is composed of multiple housings connected by screws. A limiting component 2 is provided on the angle grinder housing 1. The limiting component 2 includes a speed controller 201 provided inside the angle grinder housing 1 for installing an adjustment knob 202. The speed controller 201 is provided with an adjustment knob 202 for adjusting the speed of the angle grinder. An adjustment groove is provided on the angle grinder housing 1 for installing the adjustment knob 202. The adjustment knob 202 is located inside the adjustment groove.

[0026] A limiting gear 203 is provided on one side of the adjusting knob 202 to assist in limiting the adjusting knob 202. A limiting block 204 meshes with the teeth of the limiting gear 203 to limit the limiting gear 203. An elastic plunger 205 is provided on one side of the limiting block 204 to adaptively adjust according to the movement of the limiting gear 203. The elastic plunger 205 consists of a plunger cylinder, a coil spring, and a plunger head. The inside of the plunger cylinder is connected to one end of the coil spring, one end of the coil spring is connected to one end of the plunger head, and one end of the elastic plunger 205 is connected to the speed regulator 201.

[0027] The angle grinder housing 1 has maintenance openings on both sides for assisting in subsequent maintenance of the angle grinder. A cover 8 is installed inside the maintenance opening to shield it and reduce the entry of external impurities or dust into the angle grinder. The cover 8 is connected to the inside of the maintenance opening by screws. An auxiliary component 9 is installed inside the maintenance opening for connection to internal components of the angle grinder. Two control slots are provided at the grip area of ​​the angle grinder housing 1, and control structures 10 are installed inside these slots. The control structures 10 are control switches used to control the opening and closing of the angle grinder. An anti-slip groove is provided near the control structure 10 at the grip area of ​​the angle grinder housing 1, and an anti-slip block 11 is installed inside the anti-slip groove to improve the angle grinder's anti-slip properties. A through hole is provided at one end of the angle grinder housing 1, and a protective sleeve 12 is installed inside the through hole for threading a connecting wire. A wire fixing plate 13 is connected inside the angle grinder housing 1 by screws to secure the threaded connecting wire.

[0028] Example 2:

[0029] like Figures 1-2 , Figure 5 As shown, according to an embodiment of the present invention, an angle grinder with protective function is provided on the angle grinder housing 1. The protective component 3 includes a transmission structure 301 provided inside the angle grinder housing 1. An angle grinding blade 6 is provided at one end of the transmission structure 301. The angle grinding blade 6 is located inside the protective cover 5. The transmission structure 301 is connected to two blade pressure plates 7. One of them can be disassembled using a disassembly tool, which is beneficial for subsequent replacement of the angle grinding blade 6. One side of the two blade pressure plates 7 contacts one side of the angle grinding blade 6.

[0030] A shield 302 is provided at one end of the transmission structure 301 to provide auxiliary shielding for part of the transmission structure 301. A shaft lock button 4 is provided on the shield 302 to control part of the transmission structure 301. A protective cover 5 is provided at one end of the shield 302 via a screw to shield and protect against the splashes generated by the blade pressure plate 7 during operation. One side of the shield 302 is connected to the angle grinder housing 1 by screws. Three heat dissipation vents are provided on the angle grinder housing 1 and the shield 302. The number of heat dissipation vents can be adjusted according to actual conditions. A filter screen 303 is installed inside the heat dissipation vent to filter impurities in the outside air. The filter screen 303 and the heat dissipation vent are snap-fitted or other detachable structures for easier subsequent cleaning.

[0031] The filter screen 303, shaft lock button 4, protective cover 5, shield 302, blade pressure plate 7, transmission structure 301, control structure 10, adjustment knob 202, speed controller 201, and angle grinder housing 1 are existing technologies and will not be described in detail. The specific model and specifications need to be selected and determined according to the actual specifications of the device.

[0032] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0033] In summary, with the help of the above-mentioned technical solution of this utility model, when using the angle grinder, the operator connects the power plug of the angle grinder to an external power source, and then adjusts the speed of the angle grinder by rotating the adjustment knob 202 to meet different processing needs. When the adjustment knob 202 is rotated, it will drive the limiting gear 203 to rotate. Since the limiting gear 203 and the limiting block 204 mesh with each other, the limiting block 204 will limit the rotation of the limiting gear 203 through the action of the elastic plunger 205, thereby preventing the speed controller 201 from being displaced when subjected to vibration or accidental contact.

[0034] When the angle grinder is working, the shield 302 set on the angle grinder housing 1 covers the transmission structure 301, which can make the transmission structure 301 form the first physical barrier to prevent foreign objects from entering from the outside. The filter plate 303 installed inside the heat dissipation vent of the angle grinder housing 1 can filter the air entering the angle grinder, effectively intercepting dust and fine particles to ensure the cleanliness of the internal environment. At the same time, the protective cover 5 set on the angle grinder blade 6 can prevent the fragments generated during operation from flying and injuring the operator.

[0035] When the use is finished, the transmission structure 301 can be locked by the shaft lock button 4 to ensure that the equipment is in a safe state when changing the blade or performing maintenance. The maintenance ports on both sides of the angle grinder housing 1 are equipped with cover 8 to facilitate subsequent maintenance operations and prevent dust from entering the interior. When in use, the anti-slip block 11 at the grip of the angle grinder housing 1 can increase the friction and prevent the equipment from slipping during operation. The wire fixing plate 13 set in the angle grinder housing 1 can fix the connecting wire in the through hole to prevent the wire from becoming loose or worn.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., 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. An angle grinder with protective function, comprising an angle grinder housing (1), characterized in that, An angle grinder housing (1) is provided with a limiting component (2). The limiting component (2) includes a speed controller (201) inside the angle grinder housing (1), an adjustment knob (202) on the speed controller (201), an adjustment groove on the angle grinder housing (1), the adjustment knob (202) located inside the adjustment groove, a limiting gear (203) on one side of the adjustment knob (202), a limiting block (204) meshing with the teeth of the limiting gear (203), an elastic plunger (205) on one side of the limiting block (204), one end of the elastic plunger (205) connected to the speed controller (201), and a protective component (3) on the angle grinder housing (1).

2. The angle grinder with protective function according to claim 1, characterized in that, The protective component (3) includes a transmission structure (301) inside the angle grinder housing (1), a shield (302) at one end of the transmission structure (301), and one side of the shield (302) is connected to the angle grinder housing (1) by screws. Multiple heat dissipation vents are provided on the angle grinder housing (1) and the shield (302), and a filter screen (303) is installed inside the heat dissipation vents.

3. An angle grinder with protective function according to claim 2, characterized in that, The shield (302) is equipped with a shaft lock button (4), and a protective cover (5) is provided at one end of the shield (302) via a screw.

4. An angle grinder with protective function according to claim 3, characterized in that, An angle grinding blade (6) is provided at one end of the transmission structure (301). The angle grinding blade (6) is located inside the protective cover (5). The transmission structure (301) is connected to multiple blade pressure plates (7). One side of the multiple blade pressure plates (7) is in contact with one side of the angle grinding blade (6).

5. An angle grinder with protective function according to claim 4, characterized in that, The angle grinder housing (1) has maintenance openings on both sides. A cover (8) is installed inside the maintenance opening. The cover (8) is connected to the inside of the maintenance opening by screws. An auxiliary component (9) is installed inside the maintenance opening.

6. An angle grinder with protective function according to claim 5, characterized in that, The angle grinder housing (1) has multiple control slots at the grip area, and a control structure (10) is installed inside the multiple control slots. The angle grinder housing (1) has an anti-slip groove near the control structure (10), and an anti-slip block (11) is installed inside the anti-slip groove.

7. An angle grinder with protective function according to claim 6, characterized in that, An angle grinder housing (1) has a through hole at one end, and a protective sleeve (12) is installed inside the through hole. A wire fixing plate (13) is connected inside the angle grinder housing (1) by screws.