An electric angle grinder for preventing mechanical injury

Abstract

The utility model relates to the technical field of machining equipment protection device discloses a kind of electric angle grinder of preventing mechanical injury, including electric device body, cutting piece driven by electric device body, protective cover shell is installed on electric device body and is located outside cutting piece, there is anti-mechanical injury body on electric device body, recess is vertically arranged in anti-mechanical injury body, first copper metal spring and second copper metal spring are arranged in recess in up-down direction interval, first copper metal spring and second copper metal spring are respectively connected in circuit including power switch and motor of driving cutting piece rotation by first wiring stake and second wiring stake series connection.The utility model's electric angle grinder of preventing mechanical injury is designed on the conventional electric angle grinder body A kind of device to prevent mechanical injury, if operator removes angle grinder protection cover, it is automatically powered off, automatically stops running, to avoid personal injury.

Description

Technical Field

[0001] This utility model relates to the technical field of protective devices for machining equipment, and in particular to an electric angle grinder for preventing mechanical injuries. Background Technology

[0002] With the continuous development of the modern urban construction industry, the use of power tools is becoming more and more widespread, and handheld power tools are increasingly becoming the cutting and grinding tools widely used by construction companies.

[0003] However, with increased usage frequency, various non-standard and unsafe operating practices by operators have become increasingly prominent, leading to frequent personal injury incidents. One of the important reasons is that operators improperly remove the protective cover of the electric angle grinder, leaving the high-speed rotating grinding wheel of the angle grinder without any protective measures between it and the operator's hand, which can easily cause personal injury. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, the technical problem to be solved by this utility model is to provide an electric angle grinder that prevents mechanical injury. A device to prevent mechanical injury is cleverly designed into the body of a conventional electric angle grinder. If the operator removes the protective cover of the angle grinder, the power will be automatically cut off and the operation will be stopped automatically to avoid personal injury. It can effectively prevent mechanical injury caused by the unauthorized removal of the protective cover of the angle grinder, maximize personal safety, and the design is simple and ingenious, with high stability and easy to promote.

[0005] To achieve the above objectives, this utility model provides an electric angle grinder for preventing mechanical injury, comprising an electric device body fixed to the head end of the angle grinder housing, a cutting blade, and a protective cover mounted on the electric device body and located outside the cutting blade. A mechanical injury protection body is fixed to the electric device body, and the mechanical injury protection body has a vertically arranged groove. The groove contains a first copper metal spring and a second copper metal spring spaced apart in the vertical direction. The first and second copper metal springs are connected in series via a first terminal and a second terminal to a circuit including a power switch and a motor that drives the cutting blade to rotate. A pin corresponding to the groove is fixed to the protective cover. When the protective cover is installed on the electric device body, the pin inserts into the groove and pushes the first and second copper metal springs into close contact, thus connecting the circuit.

[0006] Preferably, the first copper metal spring and the second copper metal spring are elastic copper sheets.

[0007] Furthermore, the outer layer of the first and second terminals is covered with insulating material.

[0008] Preferably, the pin is a cylinder made of an insulator.

[0009] Furthermore, the protective cover is fixed to the electric device body by a protective cover fixing clamp.

[0010] Furthermore, a power supply and a resistor are connected in series in the circuit.

[0011] In summary, compared with the prior art, the electric angle grinder for preventing mechanical injury of this utility model has at least the following beneficial effects:

[0012] 1. A device to prevent mechanical injury is cleverly designed into the body of a conventional electric angle grinder. If the operator removes the protective cover of the angle grinder, the power will be automatically cut off and the operation will stop automatically, avoiding personal injury. It can effectively prevent mechanical injury caused by the unauthorized removal of the protective cover of the angle grinder, and maximize personal safety. The design is simple and ingenious, the structure is safe and reliable, the stability is high, the functions are complete, it is easy to mass-produce and easy to use, and it can protect the operator to the greatest extent and is easy to promote.

[0013] 2. The design of this utility model is simple and the cost is minimal. The outer layer of the exposed terminal block and the pin are made of insulating material, which can effectively prevent leakage during use. This device can automatically cut off the power when the operator removes the protective cover in violation of regulations, which can effectively prevent personal injury.

[0014] 3. This utility model is simple to produce, durable, and effectively reduces the probability of mechanical injury accidents at construction sites.

[0015] 4. When installing the protective cover, insert the pin into the groove of the anti-mechanical injury body simultaneously, causing the built-in first and second copper metal springs to make close contact, thereby conducting the circuit. When removing the protective cover, the pin is pulled out, and the first copper metal spring separates from the second copper metal spring due to elastic reset, thereby disconnecting the circuit. This utility model has a simple structure, is practical and safe, has complete functions, low production cost, and is easy to use. It can automatically cut off the power when the operator improperly removes the protective cover, greatly avoiding contact between the operator and the high-speed rotating angle grinder wheel, effectively preventing personal injury. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, 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.

[0017] Figure 1 This is a schematic diagram of the structure of the electric angle grinder for preventing mechanical injury according to this utility model;

[0018] Figure 2 This is a partial axial enlarged view of the anti-mechanical injury body of this utility model;

[0019] Figure 3 This is a top view of the protective cover with a pin of this utility model;

[0020] Figure 4 This is an elevation view of the protective cover with a latch of this utility model;

[0021] Figure 5 This is the working circuit diagram of the electric angle grinder for preventing mechanical injuries according to this utility model.

[0022] In the diagram: 1. Angle grinder housing; 2. External power plug; 3. Electric actuator body; 4. Protective cover; 5. Protective cover fixing clamp; 6. Cutting disc; 7. Power switch; 8. Anti-mechanical injury body; 9. First terminal; 10. Second terminal; 11. Groove; 12. Pin; 13. First copper metal spring; 14. Second copper metal spring; 15. Power supply; 16. Electric motor; 17. Resistor. 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] See below. Figures 1-5 This invention provides a detailed description of the electric angle grinder for preventing mechanical injuries.

[0025] This utility model discloses an electric angle grinder for preventing mechanical injuries, comprising an electric actuator body 3 fixed to the head end of the angle grinder housing 1, a cutting disc 6 (grinding wheel), and a protective cover 4 mounted on the electric actuator body 3 and located outside the cutting disc 6. The protective cover 4 is fixed to the electric actuator body 3 by a protective cover fixing clamp 5.

[0026] The anti-mechanical injury body 8 is firmly fixed to the electric device body 3. The anti-mechanical injury body 8 has a vertically arranged groove 11. The groove 11 has a first copper metal spring 13 and a second copper metal spring 14 arranged at intervals in the vertical direction. The first copper metal spring 13 and the second copper metal spring 14 are connected in series in the circuit including the power switch 7 and the motor 16 that drives the cutting blade 6 to rotate, respectively, through the first terminal 9 and the second terminal 10. The circuit also has a power supply 15 and a resistor 17 connected in series. The tail end of the angle grinder housing 1 is provided with an external power plug 2 connected to the power supply 15.

[0027] The first terminal block 9, the second terminal block 10, and the groove 11 are all located on the anti-mechanical injury body 8. To ensure the safe use of the electric angle grinder, the outer layer of the first terminal block 9 and the second terminal block 10 is covered with insulating material to prevent leakage of electricity when the angle grinder is running normally.

[0028] like Figure 2 As shown, the first copper metal spring 13 and the second copper metal spring 14 are built into the inside of the groove 11. The first terminal 9 is connected to the first copper metal spring 13, and the second terminal 10 is connected to the second copper metal spring 14. The first copper metal spring 13 and the second copper metal spring 14 are elastic copper sheets, and both springs are made of copper sheets with good conductivity and rapid rebound.

[0029] The pin 12 is securely fixed to the protective cover 4, and the position of the pin 12 corresponds to the position of the groove 11. The pin 12 is cylindrical and made of an insulator to prevent leakage during use. When the operator installs the protective cover 4 on the electric device body 3 according to the standard procedure, the pin 12 connected to the protective cover 4 is inserted into the corresponding groove 11. The length of the pin 12 is determined in advance based on its relative position to the first copper metal spring 13. As the pin 12 is inserted into the groove 11, the pin 12 pushes the first copper metal spring 13 to move and make close contact with the second copper metal spring 14, so that the circuit is connected. When the power switch 7 is turned on, the electric angle grinder can work normally.

[0030] However, if the operator fails to comply with safety management regulations and removes the protective cover 4 without authorization, such as... Figure 5 As shown, the pin 12 connected to it is also removed and pulled out at the same time. The pin 12 exits the groove 11, and the first copper metal spring 13 resets due to the loss of external force and separates from the second copper metal spring 14, so that the circuit built into the anti-mechanical injury body 8 is disconnected and the electric angle grinder cannot work.

[0031] This utility model ingeniously fixes the pin 12 to the protective cover 4. The circuit of the angle grinder can be switched on and off by installing and removing the protective cover 4. This effectively solves the problem that the angle grinder can still work normally even if the operator removes the protective cover 4 of the angle grinder in violation of regulations. It also greatly avoids the operator from coming into contact with the cutting blade 6 of the high-speed rotating angle grinder, thus effectively preventing personal injury.

[0032] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any transformations or substitutions that can be understood by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of this utility model.

Claims

1. An electric angle grinder for preventing mechanical injury, comprising an electric actuator body (3) fixed to the head end of an angle grinder housing (1), a cutting blade (6), and a protective cover (4) mounted on the electric actuator body (3) and located outside the cutting blade (6), characterized in that: A mechanical injury protection body (8) is fixed on the electric device body (3). The mechanical injury protection body (8) is provided with a vertically arranged groove (11). The groove (11) is provided with a first copper metal spring (13) and a second copper metal spring (14) arranged at intervals in the vertical direction. The first copper metal spring (13) and the second copper metal spring (14) are respectively connected in series in the circuit of a motor (16) including a power switch (7) and a drive cutting blade (6) to rotate through a first terminal (9) and a second terminal (10). The protective cover (4) is fixed with a pin (12) corresponding to the groove (11). When the protective cover (4) is installed on the electric device body (3), the pin (12) is inserted into the groove (11) and pushes the first copper metal spring (13) and the second copper metal spring (14) into close contact, so that the circuit is connected.

2. The electric angle grinder for preventing mechanical injury according to claim 1, characterized in that, The first copper metal spring (13) and the second copper metal spring (14) are elastic copper sheets.

3. The electric angle grinder for preventing mechanical injury according to claim 1, characterized in that, The outer layer of the first terminal block (9) and the second terminal block (10) is covered with insulating material.

4. The electric angle grinder for preventing mechanical injury according to claim 1, characterized in that, The pin (12) is a cylinder made of an insulator.

5. The electric angle grinder for preventing mechanical injury according to claim 1, characterized in that, The protective cover (4) is fixed to the electric device body (3) by the protective cover fixing clamp (5).

6. The electric angle grinder for preventing mechanical injury according to claim 1, characterized in that, The circuit also includes a power supply (15) and a resistor (17) connected in series.

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