Angle grinder with multi-channel switch

Abstract

The invention relates to the technical field of angle grinders, in particular to a multi-channel switch angle grinder which comprises an angle grinder body, a photoelectric switch is fixedly connected to the front side of the top of the angle grinder body, a key switch is fixedly connected to the front end of the right side of the angle grinder body, and a rear cover is installed on the rear side of the top of the angle grinder body. The photoelectric switch comprises a light-emitting diode, a phototriode and a signal transmission module, the photoelectric switch and the key switch can be detected through the ADC module by means of the MCU controller, when the MCU controller detects that the photoelectric switch is in an open circuit state, the power-on condition of the key switch is not detected, and the photoelectric switch is switched on. When the MUC controller detects that the optoelectronic switch is in the on state and detects the on signal of the key switch again, the angle grinder body is started to prevent the angle grinder body from being started by mistake, meanwhile, the optoelectronic switch cannot be stuck, and the angle grinder body is prevented from being not started or closed.

Description

Technical Field

[0001] The present application relates to the technical field of angle grinders, and in particular to an angle grinder with a multi-channel switch. Background Art

[0002] Angle grinder, also known as grinding machine or disc grinder, is a kind of grinding tool used for cutting and grinding fiberglass. Angle grinder is a portable electric tool that uses fiberglass for cutting and grinding. It is mainly used for cutting, grinding and brushing metal and stone.

[0003] Traditional angle grinders are implemented with a mechanical structure of a push block and a push rod when in use. The push block is started by two different actions, namely pressing and pushing forward, to prevent the angle grinder from starting by mistake. During use, iron grinding, fine sand and dust will enter the tool, blocking the sliding space of the push rod and the push block, causing the push block to get stuck and the tool unable to start or shut down. Therefore, an angle grinder with a multi-channel switch is proposed to address the above problems. Summary of the invention

[0004] The purpose of the present application is to provide an angle grinder with a multi-channel switch to solve the problem that the mechanical switch of a traditional angle grinder is stuck during use, resulting in the angle grinder being unable to start or shut down.

[0005] To achieve the above objectives, this application provides the following technical solutions:

[0006] An angle grinder with a multi-channel switch, comprising an angle grinder body, a photoelectric switch is fixedly connected to the front side of the top of the angle grinder body, a key switch is fixedly connected to the front right side of the angle grinder body, and a rear cover is installed on the rear side of the top of the angle grinder body;

[0007] The photoelectric switch includes a light emitting diode, a phototransistor and a signal transmission module, wherein the phototransistor is arranged on one side of the light emitting diode, the light emitting diode, the phototransistor and the signal transmission module are electrically connected to each other, and the signal transmission module is electrically connected to the MCU controller arranged in the angle grinder body;

[0008] The key switch is electrically connected to the angle grinder body, and the key switch is electrically connected to the MCU controller through the angle grinder body.

[0009] Preferably, the light beam of the light emitting diode is emitted upward and tilted toward the direction of the phototransistor.

[0010] Preferably, the MCU controller is electrically connected to an ADC module, and the ADC module is electrically connected to a phototransistor.

[0011] Preferably, the MCU controller is powered directly by the angle grinder body, and the ADC module is powered directly by the angle grinder body.

[0012] Preferably, the light emitting diode, the phototransistor and the signal transmission module are all powered directly by the angle grinder body.

[0013] Preferably, the light-emitting diode and the phototransistor are both wrapped by transparent resin, and the transparent resin outside the light-emitting diode and the transparent resin outside the phototransistor are not connected to each other, and the light-emitting diode and the phototransistor are separated by a shading plate.

[0014] Preferably, the method of use includes the following:

[0015] Step 1: Connect the angle grinder body to the power supply through the plug, and then the current enters the angle grinder body through the wire, and the photoelectric switch, key switch, MCU controller and ADC module are powered through the angle grinder body. At this time, the light-emitting diode in the photoelectric switch emits red light, because the light-emitting diode and the transparent resin outside the phototransistor are not connected, and the light shielding plate prevents the red light beam of the light-emitting diode from entering the phototransistor;

[0016] Step 2: Place your palm on the photoelectric switch. At this time, the red light emitted by the light-emitting diode enters the phototransistor through the reflection of the palm. The phototransistor receives a large amount of red light, thereby changing the voltage in the phototransistor. At this time, the voltage signal is transmitted to the ADC module through the signal transmission module to detect the voltage of the phototransistor. After detecting that the voltage value reaches the set value, the photoelectric switch is turned on through the MCU controller;

[0017] Step 3: After the photoelectric switch forms a path, the MCU controller detects the electrical signal of the key switch. At this time, the key switch is pressed. After the MCU controller detects that the key switch is turned on, the angle grinder body is started. At this time, the angle grinder body can be polished by the grinding wheel;

[0018] Step 4: After the angle grinder is started, the MCU controller only detects the signal of the key switch. You can take your hand off the photoelectric switch to control the angle grinder through the key switch. After grinding, press the key switch to turn off the angle grinder.

[0019] Step 5: When the angle grinder body is in the closed state, the MCU controller detects the photoelectric switch and the push switch at the same time. At the same time, a detection sequence is set in the MCU controller. When the MUC controller detects that the photoelectric switch is in the off state, the push switch is not detected at this time. When the MUC controller detects that the photoelectric switch is in the on state, the push switch is detected again. At this time, the MUC controller defaults to the closed state of the push switch. Only when the push switch forms a path again when the photoelectric switch forms a path can it be detected by the MCU controller, thereby further preventing the angle grinder body from starting accidentally.

[0020] Compared with the prior art, the beneficial effects of this application are:

[0021] In the present application, the MCU controller is set up to detect the photoelectric switch and the push switch through the ADC module. When the MUC controller detects that the photoelectric switch is in the off-circuit state, the power-on status of the push switch is not detected. When the MUC controller detects that the photoelectric switch is in the on state, it starts the angle grinder body after detecting the key switch on signal again to prevent the angle grinder body from being started by mistake. At the same time, the photoelectric switch will not be stuck to prevent the angle grinder body from being unable to start or shut down. At the same time, the light-emitting diode and the photosensitive transistor in the photoelectric switch are separated. Only when the photoelectric switch is blocked can the red light generated in the light-emitting diode enter the photosensitive transistor, further preventing the angle grinder body from being started by mistake. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of this application.

[0023] In the figure: 1. Angle grinder body; 2. Photoelectric switch; 3. Push switch; 4. Rear cover. DETAILED DESCRIPTION

[0024] See also Figure 1 , this application provides a technical solution:

[0025] An angle grinder with a multi-channel switch comprises an angle grinder body 1, a photoelectric switch 2 is fixedly connected to the front side of the top of the angle grinder body 1, a key switch 3 is fixedly connected to the front right side of the angle grinder body 1, and a rear cover 4 is installed on the rear side of the top of the angle grinder body 1;

[0026] The photoelectric switch 2 includes a light emitting diode, a phototransistor and a signal transmission module. The phototransistor is arranged on one side of the light emitting diode. The light emitting diode, the phototransistor and the signal transmission module are electrically connected to each other. At the same time, the signal transmission module is electrically connected to the MCU controller arranged in the angle grinder body 1.

[0027] The key switch 3 is electrically connected to the angle grinder body 1 , and the key switch 3 is electrically connected to the MCU controller through the angle grinder body 1 .

[0028] The light beam of the light emitting diode is generated upward and inclined toward the direction of the phototransistor. The MCU controller is electrically connected to the ADC module, and the ADC module is electrically connected to the phototransistor. The MCU controller is powered directly through the angle grinder body 1, and the ADC module is powered directly through the angle grinder body 1. The light emitting diode, the phototransistor and the signal transmission module are all powered directly through the angle grinder body 1. The light emitting diode and the phototransistor are both wrapped with transparent resin, and the transparent resin outside the light emitting diode and the transparent resin outside the phototransistor are not connected to each other. The light emitting diode and the phototransistor are separated by a shading plate. Through this setting, the voltage can be detected to prevent the angle grinder body 1 from being accidentally started, making the use of the angle grinder body 1 more stable.

[0029] Working process: connect the angle grinder body 1 to the power supply through the plug, and then the current enters the angle grinder body 1 through the wire, and the photoelectric switch 2, the key switch 3, the MCU controller and the ADC module are powered through the angle grinder body 1. At this time, the light-emitting diode in the photoelectric switch 2 emits red light, because the light-emitting diode and the transparent resin on the outside of the photosensitive transistor are not connected. At the same time, the shading plate prevents the red light beam of the light-emitting diode from entering the photosensitive transistor. Place the palm above the photoelectric switch 2. At this time, the red light emitted by the light-emitting diode enters the photosensitive transistor through the reflection of the palm. The photosensitive transistor receives a large amount of red light, thereby changing the voltage in the photosensitive transistor. At this time, the voltage signal is transmitted to the ADC module through the signal transmission module to detect the voltage of the photosensitive transistor. After detecting that the voltage value reaches the set value, the photoelectric switch 2 is turned on by the MCU controller. After the photoelectric switch 2 forms a path, the MCU controller detects the electrical signal of the key switch 3. At this time, the key switch 3 is pressed, and the MCU controller After the controller detects that the key switch 3 is turned on, the angle grinder body 1 is started. At this time, the angle grinder body 1 can be polished by the grinding wheel. After the angle grinder body 1 is started, the MCU controller only detects the signal of the key switch 3, and the hand can be taken away from the photoelectric switch 2 to control the angle grinder body 1 through the key switch 3. After the grinding is completed, the angle grinder body 1 can be turned off by directly pressing the key switch 3. When the angle grinder body 1 is in the off state, the MCU controller detects the photoelectric switch 2 and the key switch 3 at the same time. At the same time, a detection sequence is provided in the MCU controller. When the MUC controller detects that the photoelectric switch 2 is in the open circuit state, the key switch 3 is not detected at this time. When the MUC controller detects that the photoelectric switch 2 is in the passage state, the key switch 3 is detected again. At this time, the MUC controller defaults that the key switch 3 is in the closed state. Only when the key switch 3 forms a passage again under the state that the photoelectric switch 2 forms a passage can it be detected by the MCU controller, thereby further preventing the angle grinder body 1 from starting by mistake.

[0030] This article uses specific examples to illustrate the principles and implementation methods of this application. The above examples are only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. An angle grinder with a multi-channel switch, comprising an angle grinder body (1), characterized in that: A photoelectric switch (2) is fixedly connected to the front side of the top of the angle grinder body (1), a key switch (3) is fixedly connected to the front right side of the angle grinder body (1), and a rear cover (4) is installed on the rear side of the top of the angle grinder body (1); The photoelectric switch (2) comprises a light emitting diode, a phototransistor and a signal transmission module, wherein the phototransistor is arranged on one side of the light emitting diode, the light emitting diode, the phototransistor and the signal transmission module are electrically connected to each other, and the signal transmission module is electrically connected to an MCU controller arranged in the angle grinder body (1); The key switch (3) is electrically connected to the angle grinder body (1), and the key switch (3) is electrically connected to the MCU controller via the angle grinder body (1).

2. The angle grinder with a multi-channel switch according to claim 1, characterized in that: The light beam of the light emitting diode is emitted upward and tilted toward the direction of the phototransistor.

3. The angle grinder with a multi-channel switch according to claim 1, characterized in that: The MCU controller is electrically connected to an ADC module, and the ADC module is electrically connected to a phototransistor.

4. The angle grinder with a multi-channel switch according to claim 3, characterized in that: The MCU controller is powered directly through the angle grinder body (1), and the ADC module is powered directly through the angle grinder body (1).

5. The angle grinder with a multi-channel switch according to claim 1, characterized in that: The light emitting diode, the phototransistor and the signal transmission module are all powered directly by the angle grinder body (1).

6. The angle grinder with a multi-channel switch according to claim 1, characterized in that: The light emitting diode and the phototransistor are both wrapped by transparent resin, and the transparent resin outside the light emitting diode and the transparent resin outside the phototransistor are not connected to each other, and the light emitting diode and the phototransistor are separated by a shading plate.

7. An angle grinder with a multi-channel switch according to any one of claims 1 to 6, characterized in that: Including the following usage: Step 1: Connect the angle grinder body (1) to the power supply through a plug, and then the current enters the angle grinder body (1) through the wire, and the photoelectric switch (2), the key switch (3), the MCU controller and the ADC module are powered through the angle grinder body (1). At this time, the light-emitting diode in the photoelectric switch (2) emits red light because the light-emitting diode is not connected to the transparent resin outside the phototransistor, and the light shielding plate prevents the red light beam of the light-emitting diode from entering the phototransistor; Step 2: Place the palm above the photoelectric switch (2). At this time, the red light emitted by the light-emitting diode enters the phototransistor through the reflection of the palm. The phototransistor receives a large amount of red light, thereby changing the voltage in the phototransistor. At this time, the voltage signal is transmitted to the ADC module through the signal transmission module to detect the voltage of the phototransistor. After detecting that the voltage value reaches the set value, the photoelectric switch (2) is turned on through the MCU controller; Step 3: After the photoelectric switch (2) forms a path, the MCU controller detects the electrical signal of the key switch (3). At this time, the key switch (3) is pressed. After the MCU controller detects that the key switch (3) is turned on, the angle grinder body (1) is started. At this time, the angle grinder body (1) can be polished by the grinding wheel; Step 4: After the angle grinder body (1) is started, the MCU controller only detects the signal of the key switch (3), and the hand can be taken away from the photoelectric switch (2) to control the angle grinder body (1) through the key switch (3). After grinding is completed, the angle grinder body (1) can be turned off by directly pressing the key switch (3); Step 5: When the angle grinder body (1) is in the closed state, the MCU controller simultaneously detects the photoelectric switch (2) and the push switch (3). At the same time, a detection sequence is set in the MCU controller. When the MUC controller detects that the photoelectric switch (2) is in the open circuit state, the push switch (3) is not detected at this time. When the MUC controller detects that the photoelectric switch (2) is in the open circuit state, the push switch (3) is detected again. At this time, the MUC controller assumes that the push switch (3) is in the closed state by default. Only when the push switch (3) forms a circuit again under the condition that the photoelectric switch (2) forms a circuit can it be detected by the MCU controller, thereby further preventing the angle grinder body (1) from being started by mistake.

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