A small driver

Abstract

The utility model discloses a small -size driver relates to driver technical field, including driver and drive module, drive module is connected through the wire between driver, the driver includes speed reducer motor, hall stroke control PCB board and transmission screw tooth pole, the output of speed reducer motor is connected with transmission screw tooth pole, hall stroke control PCB board includes two hall primitive devices that mount on the PCB board, transmission screw tooth pole includes T type screw tooth pole, T type internal thread nut and magnet, the utility model discloses a hall stroke control PCB board replaces traditional stroke switch to solve the stroke problem of linear driver, and hall stroke control PCB board adopts two hall primitive devices to mount in the PCB board, and the size of control stroke is solved to the distance of two hall primitive devices, and the diameter of linear driver is reduced greatly at the same time, and control precision can realize point -to -point control, and there is no friction in the operation process.

Description

Technical Field

[0001] This utility model relates to the field of driver technology, specifically a small driver. Background Technology

[0002] Currently, linear actuators on the market include liquid-driven (hydraulic cylinders), gas-driven (pneumatic cylinders), and motor-driven (the most common form is a lead screw driven by a linear motor or a conventional servo motor or stepper motor. Its structure mainly consists of an integrated stepper motor or servo motor, connected to the lead screw nut slide via a coupling, and combined with an end connector).

[0003] Currently, all linear actuators typically solve the travel problem by using two ordinary limit switches to control the start and end points of the travel. However, limit switches have drawbacks such as large size, low precision, and high friction coefficient, and are suitable for larger types of linear actuators. When the size of the linear actuator is reduced, the travel problem of the linear actuator cannot be solved well. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a small driver.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a small driver, including a driver and a drive module, wherein the drive module and the driver are connected by wires, the driver includes a geared motor, a Hall stroke control PCB board and a transmission screw rod, the output end of the geared motor is connected to the transmission screw rod, the Hall stroke control PCB board includes two Hall effect devices mounted on the PCB board, the transmission screw rod includes a T-shaped threaded rod, a T-shaped internal thread nut and a magnet, the T-shaped internal thread nut is threadedly connected to the T-shaped threaded rod, and the magnet is disposed in the outer circumference of the T-shaped internal thread nut.

[0006] As described above, the driver also includes an outer tube and an inner rod. The outer tube wraps around the geared motor, the Hall stroke control PCB board, and the transmission screw rod. The inner rod is sleeved on the outside of the T-shaped threaded rod, and one end of the inner rod is connected to the T-shaped internal thread nut.

[0007] As mentioned above, a motor PCB board is provided on one side of the Hall stroke control PCB board near the position of the geared motor. The motor PCB board is electrically connected to the geared motor, and the geared motor is a planetary geared motor.

[0008] The distance between the two Hall effect devices mentioned above is the start and end point of the driver.

[0009] As described above, the Hall stroke control PCB extends along the axial direction of the T-shaped threaded rod, and the magnet moves with the T-shaped internal threaded nut within the sensing area between the two Hall elements.

[0010] As mentioned above, the drive module includes a microcontroller, and the motor PCB board and Hall effect sensor are electrically connected to the microcontroller.

[0011] The aforementioned conductor is a six-core conductor.

[0012] Compared with existing technologies, this small actuator has the following advantages: This invention uses a Hall effect travel control PCB board to replace the traditional limit switch to solve the travel problem of linear actuators. The Hall effect travel control PCB board uses two Hall effect elements mounted on the PCB board. The distance between these two Hall effect elements is used to determine the size of the travel. At the same time, the diameter of the linear actuator is greatly reduced, and the control precision can achieve point-to-point control. There is no friction during operation, thus effectively solving the travel problem of small linear actuators.

[0013] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is an exploded view of the driver of this utility model.

[0015] In the diagram: 1. Driver; 101. Gear motor; 102. Hall effect stroke control PCB board; 1021. Hall effect component; 103. Transmission screw rod; 1031. T-type threaded screw rod; 1032. T-type internal thread nut; 1033. Magnet; 104. Outer tube; 105. Inner rod; 106. Motor PCB board; 2. Drive module; 3. Wires. Detailed Implementation

[0016] 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.

[0017] like Figure 1-2As shown, this utility model provides a technical solution: a small driver, including a driver 1 and a driver module 2. The driver module 2 and the driver 1 are connected by a wire 3. The wire 3 is a six-core wire. The core advantage of the six-core wire is that it integrates multiple transmission requirements through a single cable, reducing wiring complexity, saving space, and reducing interference risk. The driver 1 includes a geared motor 101, a Hall effect travel control PCB board 102, and a drive screw rod 103. The output end of the geared motor 101 is connected to the drive screw rod 103. The Hall effect travel control PCB board 102 includes two Hall effect sensors 1021 mounted on the PCB board. The distance between the two Hall effect sensors 1021 is the maximum travel of the driver 1. The drive screw rod 1021... 03 includes a T-shaped threaded rod 1031, a T-shaped internal threaded nut 1032, and a magnet 1033. The T-shaped internal threaded nut 1032 is threadedly connected to the T-shaped threaded rod 1031. The magnet 1033 is located on the outer circumference of the T-shaped internal threaded nut 1032. The Hall stroke control PCB board 102 extends along the axial direction of the T-shaped threaded rod 1031. The magnet 1033 moves with the T-shaped internal threaded nut 1032 through the sensing area between two Hall effect devices 1021. When the magnet 1033 approaches the Hall effect device 1021, the magnetic field strength around the Hall effect device 1021 increases sharply, triggering the Hall effect and outputting an electrical signal. When the magnet 1033 moves away, the magnetic field weakens, and the output of the Hall effect device 1021 returns to its initial state.

[0018] like Figure 2 As shown, the driver 1 also includes an outer tube 104 and an inner rod 105. The outer tube 104 wraps around the geared motor 101, the Hall stroke control PCB board 102, and the transmission threaded rod 103. The inner rod 105 is sleeved on the outside of the T-shaped threaded rod 1031, and one end of the inner rod 105 is connected to the T-shaped internal thread nut 1032. The T-shaped internal thread nut 1032 is threadedly connected to the T-shaped threaded rod 1031 to convert the circular motion of the T-shaped threaded rod 1031 into linear motion, thereby driving the inner rod 105 to move synchronously, and thus realizing the lifting and lowering of the inner rod 105.

[0019] A motor PCB board 106 is located on one side of the Hall stroke control PCB board 102 near the geared motor 101. The motor PCB board 106 is electrically connected to the geared motor 101. The geared motor 101 is a planetary geared motor. The planetary geared motor achieves efficient, compact, and high-precision speed reduction and torque increase functions through the unique structure of planetary gears.

[0020] The drive module 2 includes a microcontroller, a motor PCB board 106, and a Hall effect sensor 1021, all of which are electrically connected to the microcontroller. The microcontroller controls the motor PCB board 106 to start the geared motor 101, thereby enabling the inner rod 105 to rise and fall.

[0021] It should be noted that: the outer tube 104 is an aluminum tube with a diameter of 20 mm, the inner rod 105 is a stainless steel tube with a diameter of 10 mm, the magnet 1033 is a permanent magnet, which is a magnetic material that can maintain its magnetism for a long time and can continuously generate a magnetic field without external current or magnetic field excitation, the T-type internal thread nut 1032 is a POM nut, and the T-type thread rod 1031 is a TR6 lead screw.

[0022] Working principle: During use, the microcontroller controls the motor PCB board 106 to start the geared motor 101. The geared motor 101 drives the T-shaped threaded rod 1031 to rotate, which in turn drives the T-shaped internal threaded nut 1032 and the inner rod 105 to move. At the same time, the T-shaped internal threaded nut 1032 drives the magnet 1033 to move synchronously. When the magnet 1033 reaches the first Hall effect sensor 1021, the magnetic field strength around the Hall effect sensor 1021 increases sharply, triggering the Hall effect and outputting an electrical signal to the microcontroller. This signal is recorded as the travel distance. Initially, the T-shaped internal thread nut 1032 and the magnet 1033 continue to move. When the magnet 1033 reaches the second Hall effect sensor 1021, the Hall effect sensor 1021 outputs an electrical signal to the microcontroller again. At this time, the microcontroller immediately sends a command to the motor PCB board 106, causing the motor PCB board 106 to control the geared motor 101 to stop or reverse. This achieves the maximum stroke of the driver 1 by controlling the distance between the two Hall effect sensors 1021, thus effectively solving the stroke problem of small linear drivers.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A small driver, comprising a driver (1) and a drive module (2), wherein the drive module (2) is connected to the driver (1) via a wire (3), characterized in that: The driver (1) includes a geared motor (101), a Hall stroke control PCB board (102), and a transmission screw rod (103). The output end of the geared motor (101) is connected to the transmission screw rod (103). The Hall stroke control PCB board (102) includes two Hall effect devices (1021) mounted on the PCB board. The transmission screw rod (103) includes a T-shaped threaded rod (1031), a T-shaped internal threaded nut (1032), and a magnet (1033). The T-shaped internal threaded nut (1032) is threadedly connected to the T-shaped threaded rod (1031), and the magnet (1033) is disposed on the outer circumference of the T-shaped internal threaded nut (1032).

2. A small driver according to claim 1, characterized in that: The driver (1) also includes an outer tube (104) and an inner rod (105). The outer tube (104) is wrapped around the outside of the geared motor (101), the Hall stroke control PCB board (102) and the transmission thread rod (103). The inner rod (105) is sleeved on the outside of the T-shaped thread rod (1031), and one end of the inner rod (105) is connected to the T-shaped internal thread nut (1032).

3. A small driver according to claim 1, characterized in that: A motor PCB board (106) is provided on one side of the Hall stroke control PCB board (102) near the position of the geared motor (101). The motor PCB board (106) is electrically connected to the geared motor (101), and the geared motor (101) is a planetary geared motor.

4. A small driver according to claim 1, characterized in that: The distance between the two Hall effect devices (1021) is the start and end point of the driver (1).

5. A small driver according to claim 1, characterized in that: The Hall stroke control PCB board (102) extends along the axial direction of the T-shaped threaded rod (1031), and the magnet (1033) moves with the T-shaped internal threaded nut (1032) in the sensing area between the two Hall elements (1021).

6. A small driver according to claim 3, characterized in that: The drive module (2) includes a microcontroller, and the motor PCB board (106) and Hall effect sensor (1021) are both electrically connected to the microcontroller.

7. A miniature driver according to claim 1, characterized in that: The conductor (3) is a six-core conductor.

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