Detachable circuit board assembly
Through the design of the detachable circuit board component, the problem of electric batch tool circuit board adapting to different screw models and storage parameters is solved, more efficient installation and applicability is achieved, manufacturing costs are reduced, and the layout of the motor control system is optimized and Information transmission.
Patent Information
- Application Number
- CN202420947117.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The circuit boards of existing electric batch tools need to adapt to different torque parameters of different screw models, which requires replacement of different encoders, which increases the cost, and the wiring harness connections that store the torque parameters of the motor are easily broken, resulting in storage interruption; at the same time, complex The control circuit board leads to unreasonable layout of the motor control system, which increases manufacturing costs.
Provides removable circuit board components, including power management board, communication control board, motor control board and encoder interface board, which can be installed and disassembled between multiple circuit boards through electrical connections and interface/pin design. It is convenient to assemble different electric batch controllers and set the memory chip at the end of the electric batch to reduce information transmission delay and interruption risks, and reduce PCB area and volume through a modular design.
It improves the installation efficiency and applicability of the electric batch controller, reduces manufacturing costs, avoids information transmission delays and storage interruptions, and optimizes the layout and connection methods of the motor control system.
Smart Images
Figure CN222263129U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electric screwdrivers, in particular to a detachable circuit board assembly. Background Art
[0002] An electric screwdriver is an electric tool that can be used to tighten screws, which includes a motor, a tightening component that can be driven by the motor to rotate, and a controller that controls the motor. Due to the different types of screws, the torque and other parameters required when the screws are tightened are different, so the types of encoders that need to be integrated on the existing motor controller are also different. Therefore, when different encoders need to be connected, different circuit boards need to be replaced, which increases the cost of the circuit board.
[0003] Secondly, the existing storage chip for storing parameters such as motor torque is connected to the controller via a wiring harness, and such a connection method is prone to storage interruption due to wiring harness breakage, which in turn causes failure in storing the motor operating parameters.
[0004] Furthermore, since the existing motor control circuit board integrates many complex control functions, it is necessary to integrate multiple control modules in different areas on a PCB circuit board, which ultimately results in the motor circuit board being too large to be set at the end of the motor and can only be connected to the motor through an external cable. However, this not only increases the manufacturing cost of the motor batch due to the increase in the area of the PCB board and the increase in the number of components. At the same time, the external cable of the control circuit board is connected to the motor, resulting in an unreasonable layout of the entire motor control system. Utility Model Content
[0005] One advantage of the present invention is that it provides a detachable circuit board assembly, wherein the power management board, the communication control board, the motor control board and the encoder interface board are all detachably electrically and communicatively connected. This not only facilitates the installation and disassembly of multiple circuit boards, but also allows the required batch controllers to be assembled according to different batch models, thereby improving the installation efficiency and applicability of the controller.
[0006] Another advantage of the present invention is that it provides a detachable circuit board assembly, including a first signal output unit and a first power output unit provided on the power management board, a second signal receiving unit and a second power receiving unit provided on the motor control board, and a first signal receiving unit and a first power receiving unit provided on one side of the communication control board and cooperating with the first signal output unit and the first power output unit, and a second signal output unit and a second power output unit provided on the other side and cooperating with the second signal receiving unit and the second power receiving unit, which can realize power supply and communication connection between multiple circuit boards and also realize installation connection between multiple circuit boards.
[0007] Another advantage of the present invention is that it provides a detachable circuit board assembly, wherein the output portion is implemented as an interface, and the receiving portion is implemented as a pin. Such a matching arrangement can not only realize the power supply and communication connection between multiple circuit boards, but also facilitate the operator to install and disassemble multiple circuit boards, thereby further improving the installation efficiency and the applicability of the controller.
[0008] Another advantage of the present invention is that it provides a detachable circuit board assembly, wherein the storage chip arranged on the communication control board can store various parameters of the electric screwdriver (such as torque, current, etc.), and the storage chip arranged on the communication control board can be directly arranged at the tail end of the electric screwdriver. In this way, the untimely information transmission caused by the long distance between the electric screwdriver and the storage chip can be reduced. Secondly, it can also avoid the situation where the information transmission is easily interrupted due to the breakage of the data cable and the storage is interrupted.
[0009] Another advantage of the present invention is that it provides a detachable circuit board assembly, which decomposes and modularizes the tasks of multiple motor control systems originally set on a PCB board, and arranges the multiple modularized circuit boards in a reasonable order to reduce the power supply and control signal transmission paths, reduce the number of connector pins between modules, and thus reduce the PCB area and volume, so that the present application can be set at the tail end of the motor, thereby avoiding the situation where the motor control board needs an external cable to be connected to the motor.
[0010] In order to achieve at least one of the above advantages of the present invention, the present invention provides a detachable circuit board assembly, including:
[0011] A connector;
[0012] A stacked circuit board component, the stacked circuit board component includes a power management board, a communication control board, a motor control board and an encoder interface board. The communication control board is detachably arranged between the power management board and the motor control board, a storage chip is arranged on the communication control board, the power management board and the communication control board are electrically connected, the communication control board and the motor control board are electrically connected, the connector is electrically connected and arranged on a side of the power management board facing away from the communication control board, and the encoder interface board is detachably arranged on a side of the motor control board facing away from the communication control board.
[0013] According to one embodiment of the utility model, a first signal output unit and a first power output unit are provided on a side of the power management board facing the communication control board, a second signal receiving unit and a second power receiving unit are provided on a side of the motor control board facing the communication control board, a first signal receiving unit and a first power receiving unit cooperating with the first signal output unit and the first power output unit are provided on one side of the communication control board, and a second signal output unit and a second power output unit cooperating with the second signal receiving unit and the second power receiving unit are provided on the other side.
[0014] According to an embodiment of the present invention, the output portion is implemented as an interface, and the receiving portion is implemented as a pin.
[0015] According to an embodiment of the present invention, the output portion is implemented as a pin, and the receiving portion is implemented as an interface.
[0016] According to an embodiment of the utility model, a plurality of encoder interface boards may be provided.
[0017] According to an embodiment of the present invention, a plurality of encoder interface boards are detachably and electrically connected to the motor control board.
[0018] According to an embodiment of the present invention, the encoder interface board can reuse control pins to connect to different encoders.
[0019] According to an embodiment of the present invention, the height difference between the power management board, the communication control board and the motor control board is a predetermined distance.
[0020] According to an embodiment of the present invention, the connector has a plurality of connection ports.
[0021] According to an embodiment of the present invention, threads are formed on the outer edge surface of the joint. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is an axonometric drawing of the utility model.
[0023] Figure 2 It is an exploded view of the utility model.
[0024] Figure 3 It is an axonometric drawing of the utility model from another perspective.
[0025] Figure 4 It is a schematic diagram of the power management board in the utility model.
[0026] Figure 5 It is a schematic diagram of the communication control board in the utility model.
[0027] Figure 6 It is a schematic diagram of the motor control board in the utility model.
[0028] Figure 7 It is a schematic diagram of the encoder interface board in the utility model. DETAILED DESCRIPTION
[0029] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.
[0030] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.
[0031] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.
[0032] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0033] According to the attached Figure 1 To Attachment Figure 7 As shown, a detachable circuit board assembly according to a preferred embodiment of the present invention will be described in detail below, wherein the detachable circuit board assembly includes a connector 10 and a laminated circuit board component 20. The connector 10 is disposed on the laminated circuit board component 20.
[0034] Specifically, the laminated circuit board component 20 includes a power management board 21, a communication control board 22, a motor control board 23 and an encoder interface board 24. The communication control board 22 is detachably arranged between the power management board 21 and the motor control board 23, a storage chip 221 is arranged on the communication control board 22, the power management board 21 and the communication control board 22 are electrically connected, the communication control board 22 and the motor control board 23 are electrically connected, the connector 10 is electrically connected and arranged on the side of the power management board 21 facing away from the communication control board 22, and the encoder interface board 24 is detachably arranged on the side of the motor control board 23 facing away from the communication control board 22.
[0035] Those skilled in the art can understand that the storage chip 221 can store various parameters (such as torque, speed, current, etc.) during the operation of the electric screwdriver. In this way, the storage chip 221 integrated on the communication control board 22 can reduce the untimely information transmission caused by the long distance between the electric screwdriver and the storage chip 221. Secondly, it can also avoid the situation where information transmission is easily interrupted due to the breakage of the data cable and the storage is interrupted.
[0036] Specifically, the communication control board 22 is electrically and communicatively connected to the power management board 21 and the motor control board 23 respectively, the storage chip 221 is electrically and communicatively connected to the communication control board 22, and the encoder interface board 24 is electrically and communicatively detachably connected to the side of the motor control board 23 facing away from the communication control board 22.
[0037] Specifically, the power management board 21 is provided with a first signal output unit 211 and a first power output unit 212 on the side facing the communication control board 22, and the motor control board 23 is provided with a second signal receiving unit 231 and a second power receiving unit 232 on the side facing the communication control board 22; the communication control board 22 is provided with a first signal receiving unit 222 and a first power receiving unit 223 cooperating with the first signal output unit 211 and the first power output unit 212 on one side, and a second signal output unit 224 and a second power output unit 225 cooperating with the second signal receiving unit 231 and the second power receiving unit 232 on the other side.
[0038] In this embodiment, the output part is implemented as an interface, and the receiving part is implemented as a pin.
[0039] In another embodiment, the output part may be implemented as a pin, and the receiving part may be implemented as an interface.
[0040] Those skilled in the art can understand that by decomposing the control tasks of the motor and rationally dividing the decomposed control tasks into a plurality of different control modules:
[0041] The power management board 21 integrates a power IC chip, which is mainly responsible for reducing the high voltage power supply to generate various low voltage power supplies to supply power to other circuit boards;
[0042] The communication control board 22 is mainly responsible for receiving the motor control commands sent by other controllers, transmitting them to the motor control board 23, completing the motor control, and uploading the motor operation status at the same time;
[0043] The motor control board 23 mainly completes motor current collection, control calculation, and finally generates a PWM control signal to control the on and off of the NMOS tube, thereby controlling the current direction and size of the motor UVW three-phase.
[0044] The encoder interface board 24 can reuse control pins to connect to different encoders.
[0045] This reduces the number of components used and the area of the PCB. Secondly, the control modules are arranged in a reasonable order to reduce the power supply and control signal transmission paths and the number of connector pins between modules, thereby reducing the PCB area.
[0046] By inserting and matching the pins and interfaces, the power management board 21, the communication control board 22 and the encoder interface board 24 can be quickly installed and disassembled. Secondly, the power management board 21, the communication control board 22 and the encoder interface board 24 of different specifications can be installed together to form a new controller according to the type of electric batch required.
[0047] It is worth mentioning that an MCU is provided on each circuit board of the stacked circuit board component 20. Through the collaborative work between the multiple MCUs, not only the performance requirements of each MCU can be reduced, but also the number of pins of each MCU can be reduced, thereby reducing the volume of the stacked circuit board component 20.
[0048] Specifically, the encoder interface board 24 may be provided in plurality.
[0049] Further preferably, the encoder interface board 24 can reuse control pins to connect to different encoders.
[0050] It can be understood by those skilled in the art that, due to the different types of encoder interfaces of different electric screwdrivers, traditionally, different interfaces need to be made on traditional controllers, which results in a relatively high manufacturing cost. In the present application, by dividing the encoder interface board 24 and the communication control board 22 into two boards, different encoder interface boards 24 can be provided to form the laminated circuit board component 20 provided with different encoder interfaces. In this way, when interfaces of different encoder types need to be docked, users can choose according to their own needs. In this way, the controller can be applicable to various electric screwdrivers.
[0051] Specifically, the height difference between the power management board 21, the communication control board 22 and the motor control board 23 is a predetermined distance. It can be understood by those skilled in the art that the predetermined distance can be reasonably set according to the thickness of the circuit board and the space inside the housing of the motor, so as to reduce the volume of the stacked circuit board component 20 as much as possible while ensuring the heat dissipation effect between the stacked multiple circuit boards and avoiding the performance degradation of the controller due to the increase in temperature. Secondly, the predetermined height can also prevent the components on the two adjacent circuit boards from being damaged due to collision and extrusion.
[0052] Specifically, the connector 10 has a plurality of connection ports 101 .
[0053] Preferably, threads are formed on the outer edge of the connector 10. Those skilled in the art will appreciate that the external data power harness is connected to the connector 10 through threaded engagement, and the various types of cables on the external harness are inserted into the corresponding connection ports 101.
[0054] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.
Claims
1. A detachable circuit board assembly, characterized in that: include: A connector; A stacked circuit board component, the stacked circuit board component includes a power management board, a communication control board, a motor control board and an encoder interface board, the communication control board is detachably arranged between the power management board and the motor control board, a storage chip is arranged on the communication control board, the power management board and the communication control board are electrically connected, the communication control board and the motor control board are electrically connected, the connector is electrically connected and arranged on a side of the power management board facing away from the communication control board, and the encoder interface board is detachably arranged on a side of the motor control board facing away from the communication control board.
2. The detachable circuit board assembly according to claim 1, characterized in that: The power management board is provided with a first signal output unit and a first power output unit on the side facing the communication control board, and the motor control board is provided with a second signal receiving unit and a second power receiving unit on the side facing the communication control board. The communication control board is provided with a first signal receiving unit and a first power receiving unit cooperating with the first signal output unit and the first power output unit on one side, and a second signal output unit and a second power output unit cooperating with the second signal receiving unit and the second power receiving unit on the other side.
3. The detachable circuit board assembly according to claim 2, characterized in that: The output part is implemented as an interface, and the receiving part is implemented as a pin.
4. The detachable circuit board assembly according to claim 2, characterized in that: The output part is implemented as a pin, and the receiving part is implemented as an interface.
5. The detachable circuit board assembly according to claim 1, characterized in that: The encoder interface board may be provided in plurality.
6. The detachable circuit board assembly according to claim 1, characterized in that: A plurality of encoder interface boards are detachably and electrically connected to the motor control board.
7. The detachable circuit board assembly according to claim 1, characterized in that: The encoder interface board can reuse control pins to connect to different encoders.
8. The detachable circuit board assembly according to claim 1, characterized in that: The height difference among the power management board, the communication control board and the motor control board is a predetermined distance.
9. The detachable circuit board assembly according to claim 1, characterized in that: The connector has a plurality of connection ports.
10. The detachable circuit board assembly according to claim 1, characterized in that: A thread is formed on the outer edge surface of the joint.