Clamp

Abstract

The invention relates to a clamp, which belongs to the technical field of vehicle electronic control unit (VECU) circuit board assembly of automobile electronic products and mainly solves the problems of nonintuitive effect, poor safety and low efficiency of bootloader program of the traditional methods. The clamp is mainly characterized by consisting of a clamp body, a pressing mechanism assembly, a voltage display assembly, a printed circuit board (PCB) positioning mechanism assembly and a probe wire beam assembly, wherein the pressing mechanism assembly consists of a guide slide rod, a lower press support and manual press tongs, the PCB positioning mechanism assembly comprises an elastic support base and a positioning plate, the positioning plate is positioned at the upper end of the elastic support base and is provided with a positioning mechanism, and the probe wire beam assembly comprises a work probe wire beam and a power supply probe wire beam and is fixedly arranged on the clamp positioning plate. The clamp has the characteristics that the operation efficiency is high, the operation is convenient, safety and reliability are realized, the cost is low, and the structure is simple and practical. The clamp is mainly used in the technical field of the assembly process of automobile electronic product VECU and circuit boards of various ECU products requiring on-line bootloader program writing.

Description

technical field [0001] The invention belongs to the technical field of VECU circuit board assembly of automotive electronic products. Specifically relates to a circuit board online program writing auxiliary fixture used for online writing of a bootloader program to a circuit board main chip. Background technique [0002] In the production of automotive electronic products VECU and other automotive ECU electronic control unit products, it is necessary to write the bootloader program to the main chip of the electronic circuit board MCU. The traditional method of writing the bootloader uses 6 pins welded by wires to make a wiring harness. Connect the program setter to the pad hole of the bootloader, and then power on the circuit board to write the bootloader program. The wiring harness needs to be connected once for each operation, and Wires inserted into pad holes are subject to poor contact problems causing various problems. Especially in mass production, such operations ar...

AI Technical Summary

Problems solved by technology

The traditional method of writing the bootloader uses 6 pins welded by wires to make a wiring harness. Connect the program setter to the pad hole of the bootloader, and then power on the circuit board to write the bootloader program. The wiring harness needs to be connected once for each operation, and The wire inserted into the pad hole is subject to poor contact, causing various problems

Especially in mass production, this operation is not only inefficient, but also unsafe

In the traditional method, it is not possible to observe the voltage technical requirements online

Dongfeng D310 truck vehicle controller (VECU) circuit board is a high-tech product of automotive electronics. At present, it is impossible to use traditional methods to realize fast clamping and online program writing of the VECU circuit board. Clamping can realize online writing of the bootloader program, and at the same time, it is convenient to observe the voltage of the circuit board bootloader port voltage

The method of using the fixture is simple, but there are no ready-made samples for reference and no ready-made products to buy, and the process of writing the bootloader program to the main chip of the circuit board online does not allow excessive investment.

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