Wireless control scissors

Abstract

The present invention provides a pair of wireless controlled scissors, comprising a handle end, a telescopic rod connected to the handle end, a chuck assembly arranged at the end of the telescopic rod, and a scissors end arranged on the chuck assembly; the handle end comprises a handle housing, a trigger portion arranged on the handle housing, a battery assembly arranged on one side of the handle housing, and a transmitter module arranged inside the handle housing; the trigger portion is provided with a trigger assembly, and a magnet is arranged on the trigger assembly; the transmitter module is provided with a Hall element, and when the trigger is pulled, the Hall element is used to sense the movement of the magnet on the trigger assembly, and convert the sensed movement of the magnet into a Hall signal, and the transmitter module sends the Hall signal to a receiving end arranged in the scissors end, and the receiving end makes a judgment based on the received Hall signal and performs a corresponding action. In the present invention, there is no wiring inside the telescopic rod, the transmitter module is placed at the handle end, and the wireless receiving control module is placed in the scissors at the end of the telescopic rod.

Description

Technical Field

[0001] The invention relates to wireless controlled scissors, and in particular to a control technology for a user to use a scissors extension rod to achieve high-position branch or long-distance branch pruning. Background Art

[0002] The existing original extension rod internal wiring transmits the signal placed on the handle end and the battery power to the scissors at the end of the extension rod. The scissors judge the wired signal and take corresponding actions. The layout of the extension rod is restricted by the length of the wiring, and the internal wiring of the extension rod will have poor signal contact when used for a long time. Summary of the invention

[0003] In view of this, the main purpose of the present invention is to provide a wireless controlled scissors.

[0004] The technical solution adopted by the present invention is:

[0005] A wireless controlled scissors comprising

[0006] A handle end, a telescopic rod connected to the handle end,

[0007] A clamp assembly is provided at the end of the telescopic rod,

[0008] a scissor end disposed on the chuck assembly;

[0009] The handle end includes a handle shell, a trigger portion arranged on the handle shell, a battery assembly arranged on one side of the handle shell, and a transmitting module arranged inside the handle shell;

[0010] The trigger part is provided with a trigger assembly, and a magnet is provided on the trigger assembly;

[0011] The transmitting module is provided with a Hall element. When the trigger is pulled, the Hall element is used to sense the movement of the magnet on the trigger assembly and convert the sensed movement of the magnet into a Hall signal. The transmitting module sends the Hall signal to the receiving end provided in the scissors end. The receiving end makes a judgment based on the received Hall signal and performs a corresponding action.

[0012] Furthermore, the battery assembly is provided with a connector, which is arranged inside the handle housing and located at the upper part of the battery assembly, and the connector is connected to a connecting wire, and the connecting wire is connected to the transmitting module.

[0013] The connector is connected to the indicator light.

[0014] Furthermore, a foot is provided on the right side of the handle shell.

[0015] Further, the clamp assembly includes an inner clamp assembly for fixing with the telescopic rod;

[0016] The outer clamp assembly is fixed on the inner clamp assembly and is used for fixing with the scissors end.

[0017] Further, the inner chuck assembly comprises an upper inner chuck and a lower inner chuck,

[0018] The upper inner clamp and the lower inner clamp wrap and fix the telescopic rod.

[0019] Further, the outer clamp assembly includes a left outer clamp and a right outer clamp,

[0020] The left outer chuck and the right outer chuck are fixed on the left and right sides of the inner chuck assembly respectively.

[0021] After the left outer clamp and the right outer clamp are fixed, a fixing groove is formed on the upper part thereof for fixing with the scissors ends.

[0022] Furthermore, the receiving end includes a wireless receiving control module, which includes a power supply circuit, a scissors single-chip microcomputer circuit, a wireless signal receiving circuit, a temperature detection circuit, a current detection circuit, a motor zero-crossing detection circuit, a motor high-speed zero-crossing detection circuit, a buzzer drive circuit and a peak overcurrent value circuit, and the power supply circuit is respectively connected to the scissors single-chip microcomputer circuit, the wireless signal receiving circuit, the temperature detection circuit, the current detection circuit, the motor zero-crossing detection circuit, the motor high-speed zero-crossing detection circuit, the buzzer drive circuit and the peak overcurrent value circuit, and the scissors single-chip microcomputer circuit is respectively connected to the wireless signal receiving circuit, the temperature detection circuit, the current detection circuit, the motor zero-crossing detection circuit, the motor high-speed zero-crossing detection circuit, the buzzer drive circuit and the peak overcurrent value circuit.

[0023] Furthermore, the wireless signal receiving circuit is connected to the scissors through the J1 terminal, and the wireless signal receiving circuit is used to receive the Hall signal of the transmitting module and keep it consistent with the Hall signal detected by the transmitting module through the pin S2.

[0024] Furthermore, the scissors single-chip circuit is used to detect the level of pin Pin24 in real time. When it is detected that the level of pin Pin24 turns to a low level, the wireless receiving control module receives the Hall signal of the transmitting module placed at the handle end;

[0025] At this time, the Hall element on the transmitting module at the handle end senses the movement of the magnet set on the trigger, and the scissors make a closing action;

[0026] When the user releases the trigger on the handle, the transmitter module on the handle end sends a signal, which is received by the receiver on the scissors end. When the scissors microcontroller circuit detects that pin Pin24 turns to a high level, an opening signal is generated.

[0027] In the present invention, there is no wiring inside the telescopic rod, a transmitting module is placed at the handle end, a wireless receiving control module is placed in the scissors at the end of the telescopic rod, and the wireless receiving control module and the scissors realize level reading;

[0028] The transmitting module at the handle end and the wireless receiving control module placed on the scissors end (or the wireless receiving control module placed on the saw, or the wireless receiving control module in other tools) have only one transmitting module corresponding to the wireless receiving control module at any time, that is, when the trigger at the handle end is pulled, only one receiving module responds to the action at any time.

[0029] The scissor end is fixed on the clamp assembly of the telescopic rod. The scissor microcontroller used on the scissor end detects the pin (Pin24--P0.7) level in real time. The normal level is high. When the pin detects that the level has turned to a low level, it means that the wireless receiving control module placed on the scissor end has received a valid signal from the transmitting module placed on the handle end, that is, the Hall sensor on the transmitting module on the handle end senses the magnet on the trigger, which means that the user has pulled the trigger on the handle, and the scissors make a closing action; when the user releases the trigger on the handle, the transmitting module on the handle sends a signal, which is received by the wireless receiving control module at the scissor end. The scissor microcontroller used at the scissor end detects that the pin has turned to a high level, and then an opening signal is made. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural diagram of the structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the exploded structure of the handle end of the present invention;

[0032] Figure 3 It is a schematic diagram of the exploded structure of the chuck assembly in the present invention;

[0033] Figure 4 is a circuit diagram of a power supply circuit in the present invention;

[0034] Figure 5 It is a circuit diagram of the scissors single-chip microcomputer circuit in the present invention;

[0035] Figure 6 is a circuit diagram of a wireless signal receiving circuit in the present invention;

[0036] Figure 7 is a circuit diagram of a temperature detection circuit in the present invention;

[0037] Figure 8 is a circuit diagram of a current detection circuit in the present invention;

[0038] Fig. 9 It is a circuit diagram of a motor zero-crossing detection circuit in the present invention;

[0039] Fig.10 It is a circuit diagram of a motor high-speed zero-crossing detection circuit in the present invention;

[0040] Fig.11 is a circuit diagram of a buzzer driving circuit in the present invention;

[0041] Fig.12 is a circuit diagram of a battery voltage detection circuit in the present invention;

[0042] Fig.13 It is a circuit diagram of the peak overcurrent value circuit in the present invention. DETAILED DESCRIPTION

[0043] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0044] Reference Figures 1 to 3 The present invention discloses a pair of wireless controlled scissors, comprising

[0045] A handle end 100, a telescopic rod 200 connected to the handle end 100,

[0046] The clamp assembly 300 is arranged at the end of the telescopic rod 200.

[0047] A scissor end 400 disposed on the chuck assembly 300;

[0048] The handle end 100 includes a handle housing 101, a trigger portion 109 disposed on the handle housing, a battery assembly 102 disposed on one side of the handle housing, and a transmitter module 106 disposed inside the handle housing;

[0049] The trigger part is provided with a trigger assembly 107, and the trigger assembly includes a trigger and a magnet arranged on the trigger;

[0050] The transmitting module 106 is provided with a Hall element (or a reed switch). When the trigger is pulled, the Hall element is used to sense the movement of the magnet on the trigger assembly and convert the sensed movement of the magnet into a Hall signal. The transmitting module sends the Hall signal to the receiving end provided in the scissors end. The receiving end makes a judgment based on the received Hall signal and performs a corresponding action.

[0051] The battery assembly is provided with a connector 104, which is arranged inside the handle housing and located at the upper part of the battery assembly. The connector is connected to a connecting wire, which is connected to a transmitting module.

[0052] The connector is connected to the indicator light 108 .

[0053] A foot 103 is provided on the right side of the handle housing.

[0054] The clamp assembly 300 includes an inner clamp assembly for fixing with the telescopic rod 200;

[0055] The outer clamp assembly is fixed on the inner clamp assembly and is used to be fixed with the scissors end 400.

[0056] The inner chuck assembly includes an upper inner chuck 302 and a lower inner chuck 304.

[0057] The upper inner clamp and the lower inner clamp wrap and fix the telescopic rod 300.

[0058] The outer clamp assembly includes a left outer clamp 301 and a right outer clamp 303.

[0059] The left outer chuck and the right outer chuck are fixed on the left and right sides of the inner chuck assembly respectively.

[0060] After the left outer clamp and the right outer clamp are fixed, a fixing groove is formed on the upper part thereof for fixing with the scissors ends.

[0061] Furthermore, the receiving end includes a wireless receiving control module, which includes a power supply circuit, a scissors single-chip microcomputer circuit, a wireless signal receiving circuit, a temperature detection circuit, a current detection circuit, a motor zero-crossing detection circuit, a motor high-speed zero-crossing detection circuit, a buzzer drive circuit and a peak overcurrent value circuit, and the power supply circuit is respectively connected to the scissors single-chip microcomputer circuit, the wireless signal receiving circuit, the temperature detection circuit, the current detection circuit, the motor zero-crossing detection circuit, the motor high-speed zero-crossing detection circuit, the buzzer drive circuit and the peak overcurrent value circuit, and the scissors single-chip microcomputer circuit is respectively connected to the wireless signal receiving circuit, the temperature detection circuit, the current detection circuit, the motor zero-crossing detection circuit, the motor high-speed zero-crossing detection circuit, the buzzer drive circuit and the peak overcurrent value circuit.

[0062] The wireless signal receiving circuit is connected to the scissors through the J1 terminal. The wireless signal receiving circuit is used to receive the Hall signal of the transmitting module and keep it consistent with the Hall signal detected by the transmitting module through the pin S2.

[0063] The scissor single chip microcomputer circuit is used to detect the level of pin Pin24 in real time. When it is detected that the level of pin Pin24 turns to a low level, the wireless receiving control module receives the Hall signal of the transmitting module placed at the handle end;

[0064] At this time, the Hall element on the transmitting module at the handle end senses the movement of the magnet set on the trigger, and the scissors make a closing action;

[0065] When the user releases the trigger on the handle, the transmitter module on the handle end sends a signal, which is received by the receiver on the scissors end. When the scissors microcontroller circuit detects that pin Pin24 turns to a high level, an opening signal is generated.

[0066] Reference Figure 4 The scissor end also includes a power module set inside the scissor end. The power module adopts the buck switching regulator chip XL1509-12E1. The power management chip is a single-chip asynchronous buck power IC-XL1509-12E1. The power management chip integrates a 100mΩ current MOSFET and can provide a wide voltage input of 8-30V and a continuous load current of 2A. The current mode control provides fast transient response and cycle-by-cycle soft start time adjustable to prevent surge current conduction and shutdown mode, and the power supply current drops below 1μA. In this application, R53 and R55 are used to achieve a stable output of +12V, and then a three-terminal voltage regulator device 78M05 is used to achieve a stable 5V output to supply power to the scissor microcontroller used in the scissor end.

[0067] Reference Figure 5 The scissors microcontroller uses the XMC1301-032 microcontroller, and the resources used include the chip IO port input and output functions, ADC function, and TIM PWM function, which respectively implement the following functions:

[0068] Table 1 Scissor MCU pin function definition

[0069]

[0070]

[0071] The chip IO port input and output functions realize the following functions respectively. The pin function definitions are as follows:

[0072] Table 2-1 MCU pin configuration

[0073]

[0074] Turn on the power, power on the MCU, configure the MCU system resources, and configure the required function detection pins including TIMER1, TIMER2, adc, IO port input and output and other functions.

[0075] The system main function includes real-time execution function, 2MS execution function, 5 millisecond execution function and 20MS execution function, as shown in the following table:

[0076]

[0077] Reference Figure 6The wireless signal receiving circuit is connected to the scissor end through the J1 terminal, including the 5V power supply, the system ground wire and the signal pins S1 and S2. The wireless signal receiving circuit is used to receive the Hall signal of the transmitting module. Pin S2 remains consistent with the Hall signal detected by the transmitting module. When pairing, the transmitter presses the trigger to power on, and the indicator light is always on; it enters the pairing state for 15S, and the indicator light flashes in the pairing state. When the pin S1 is low level, it enters the pairing state and pulls the pin S2 level low at the same time. After the pairing is completed, the pin S2 level is raised, and the receiving end does not sleep.

[0078] Reference Figure 7 This part of the circuit uses an NTC temperature sensor to detect the blade temperature at the scissors end. The NTC temperature sensor is a thermistor and probe. Its resistance value decreases rapidly as the temperature rises. The NTC is placed inside the heating plate to synchronize with the actual temperature of the heating plate. The NTC temperature sensor is placed next to the MOS tube. The NTC temperature sensor divides the voltage with the resistor R38 and is connected to the scissors microcontroller through a first-level filtering RC circuit. The scissors microcontroller detects the current blade temperature through the ADC function port, thereby knowing the current MOS tube temperature and realizing temperature control.

[0079] Reference Figure 8 This part of the circuit uses a 5mr sampling resistor in series with the motor drive circuit. By reading the voltage on the resistor, the current can be calculated according to the even-ohm law, thereby sensing the shear load of the scissors.

[0080] Reference Fig. 9 , a resistor is connected in parallel to the three-phase brushless DC motor, and the voltage value of the current phase can be calculated through voltage division sampling. The single scissor blade machine can obtain the three-phase voltage value at any time through the ADC function. By comparing different voltage values, the motor zero crossing point can be known, thereby achieving stable phase switching of the motor and realizing continuous and stable operation of the motor.

[0081] Reference Fig.10 When the motor speed is too fast, there may be a moment when the timing cannot correspond by only sampling the current value. Therefore, a resistor is connected in parallel to the three-phase brushless DC motor. The current scissor motor position value can be obtained by voltage division sampling and a comparator (LM339). The scissor microcontroller detects the three pin values ​​corresponding to the voltage division sampling and can achieve continuous and stable operation of the motor at high speed according to the motor rotation timing.

[0082] Reference Fig.11 ,according to Fig.10 The scissors microcontroller detects the three pin values ​​corresponding to the voltage division sampling, and can obtain the current scissors motor position value through voltage division sampling and comparator (LM339), and alarm will be issued if the threshold is exceeded.

[0083] Reference Fig.12 The battery voltage is connected to the microcontroller pin by connecting two detection resistors R1 and R3 in parallel at the battery input end. After the voltage is divided by R1 and R3, it is filtered by the first-level RC of R2 and C2. The microcontroller is configured with ADC function to detect the voltage value of the pin and calculate the current battery voltage by calculating the voltage division ratio of R1 and R3.

[0084] Reference Fig.13 After the voltage is divided by two resistors R7 and R14 and filtered by C6, it is connected to the microcontroller pin. The microcontroller is configured with a comparator function to detect the voltage values ​​of the two input pins. The comparison result can be known internally and corresponding actions can be taken.

[0085] When the user needs to pair another tool scissors, he can press the trigger of the tool to be paired for 30 seconds at the same time to pair it. This pairing can only be performed one-to-one.

[0086] The technical solutions disclosed in the embodiments of the present invention are introduced in detail above. The principles and implementation methods of the embodiments of the present invention are explained in this article using specific embodiments. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A wireless controlled scissors, characterized in that: include A handle end, a telescopic rod connected to the handle end, A clamp assembly is provided at the end of the telescopic rod, a scissor end disposed on the chuck assembly; The handle end includes a handle shell, a trigger portion arranged on the handle shell, a battery assembly arranged on one side of the handle shell, and a transmitting module arranged inside the handle shell; The trigger part is provided with a trigger assembly, and a magnet is provided on the trigger assembly; The transmitting module is provided with a Hall element. When the trigger is pulled, the Hall element is used to sense the movement of the magnet on the trigger assembly and convert the sensed movement of the magnet into a Hall signal. The transmitting module sends the Hall signal to the receiving end provided in the scissor end. The receiving end makes a judgment based on the received Hall signal and performs a corresponding action. The receiving end includes a wireless receiving control module, which includes a power supply circuit, a scissors single-chip microcomputer circuit, a wireless signal receiving circuit, a temperature detection circuit, a current detection circuit, a motor zero-crossing detection circuit, a motor high-speed zero-crossing detection circuit, a buzzer drive circuit and a peak overcurrent value circuit, the power supply circuit is respectively connected to the scissors single-chip microcomputer circuit, the wireless signal receiving circuit, the temperature detection circuit, the current detection circuit, the motor zero-crossing detection circuit, the motor high-speed zero-crossing detection circuit, the buzzer drive circuit and the peak overcurrent value circuit, and the scissors single-chip microcomputer circuit is respectively connected to the wireless signal receiving circuit, the temperature detection circuit, the current detection circuit, the motor zero-crossing detection circuit, the motor high-speed zero-crossing detection circuit, the buzzer drive circuit and the peak overcurrent value circuit; The wireless signal receiving circuit is connected to the scissors through the J1 terminal, and the wireless signal receiving circuit is used to receive the Hall signal of the transmitting module and keep it consistent with the Hall signal detected by the transmitting module through the pin S2; The scissor single chip microcomputer circuit is used to detect the level of pin Pin24 in real time. When it is detected that the level of pin Pin24 turns to a low level, the wireless receiving control module receives the Hall signal of the transmitting module placed at the handle end; At this time, the Hall element on the transmitting module at the handle end senses the movement of the magnet set on the trigger, and the scissors make a closing action; When the user releases the trigger on the handle, the transmitter module on the handle sends a signal, which is received by the receiver on the scissors. When the scissors microcontroller circuit detects that pin 24 turns to a high level, it generates an opening signal. The scissor end also includes a power module arranged inside the scissor end. The power module adopts a step-down switching voltage regulator chip XL1509-12E1. The power management chip integrates a 100mΩ current MOSFET. It provides fast transient response and cycle-by-cycle soft start time under current mode control. The adjustable time can prevent surge current conduction and shutdown mode. The power supply current is reduced to less than 1μA. Through R53 and R55, a stable output of +12V is achieved. Then, through the three-terminal voltage regulator device 78M05, a stable 5V output is achieved to supply power to the scissor microcontroller used by the scissor end. The wireless signal receiving circuit is connected to the scissor end through the J1 terminal, including the 5V power supply, the system ground wire, and the signal pins S1 and S2. The wireless signal receiving circuit is used to receive the Hall signal of the transmitting module. Pin S2 remains consistent with the Hall signal detected by the transmitting module. When pairing, the transmitter presses the trigger to power on, and the indicator light is always on; it enters the pairing state in 15S, and the indicator light flashes in the pairing state. When the pin S1 is low level, it enters the pairing state and pulls the pin S2 level down at the same time. After the pairing is completed, the pin S2 level is raised again, and the receiving end does not sleep; Use NTC temperature sensor to detect the blade temperature at the end of the scissors. NTC temperature sensor is a thermistor and probe. Its resistance value decreases rapidly as the temperature rises. The NTC is placed inside the heating plate to synchronize with the actual temperature of the heating plate. The NTC temperature sensor is placed next to the MOS tube. The NTC temperature sensor divides the voltage with the resistor R38 and is connected to the scissors microcontroller through a first-level filtering RC circuit. The scissors microcontroller detects the current blade temperature through the ADC function port, thereby knowing the current MOS tube temperature and realizing temperature control. A resistor is connected in parallel to the three-phase brushless DC motor, and the voltage value of the current phase can be calculated through voltage division sampling. The single scissor blade machine can obtain the three-phase voltage value at any time through the ADC function. By comparing different voltage values, the motor zero crossing point can be known, thereby achieving stable phase switching of the motor and realizing continuous and stable operation of the motor.

2. The wireless controlled scissors according to claim 1, characterized in that: The battery assembly is provided with a connector, which is arranged inside the handle housing and located at the upper part of the battery assembly. The connector is connected to a connecting wire, which is connected to a transmitting module. The connector is connected to the indicator light.

3. The wireless controlled scissors according to claim 1, characterized in that: A foot is arranged on the right side of the handle shell.

4. The wireless controlled scissors according to claim 1, characterized in that: The clamp assembly includes an inner clamp assembly for fixing with the telescopic rod; The outer clamp assembly is fixed on the inner clamp assembly and is used for fixing with the scissors end.

5. The wireless controlled scissors according to claim 4, characterized in that: The inner chuck assembly comprises an upper inner chuck and a lower inner chuck, The upper inner clamp and the lower inner clamp wrap and fix the telescopic rod.

6. The wireless controlled scissors according to claim 4, characterized in that: The outer clamp assembly includes a left outer clamp and a right outer clamp, The left outer chuck and the right outer chuck are fixed on the left and right sides of the inner chuck assembly respectively. After the left outer clamp and the right outer clamp are fixed, a fixing groove is formed on the upper part thereof for fixing with the scissors ends.

7. The wireless controlled scissors according to claim 1, characterized in that: The wireless receiving control module and the scissors realize level reading.

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