CN217546406U

CN217546406U - Circuit board convenient for adjusting line sequence

Info

Publication number: CN217546406U
Application number: CN202221008712.4U
Authority: CN
Inventors: 王晓枫; 王扩军; 林杨宣
Original assignee: Zhejiang Viewshine Intelligent Meter Co Ltd
Current assignee: Zhejiang Viewshine Intelligent Meter Co Ltd
Priority date: 2022-04-24
Filing date: 2022-04-24
Publication date: 2022-10-04
Anticipated expiration: 2032-04-24

Abstract

The utility model relates to a circuit board convenient for adjusting line sequence, which comprises two wiring seats provided with terminals, wherein four bonding pads which are mutually spaced and are integrally arranged in a shape like Chinese character 'tian' are arranged between the two wiring seats; a first bonding pad close to the first wire holder is connected with the first terminal through a first wire, and a third bonding pad which is far away from the first wire holder and corresponds to the first bonding pad is connected with a third terminal through a third wire; the second bonding pad close to the first terminal is connected with the fourth terminal through a fourth routing wire, and the fourth bonding pad which is far away from the first terminal and is right corresponding to the second bonding pad is connected with the second terminal through a second routing wire; the first terminal, the second terminal, the third terminal and the fourth terminal are respectively positioned on the first wiring seat and the second wiring seat. The utility model discloses the circuit board adopts the pad structure, only needs two resistances of welding just can realize the line preface adjustment on corresponding the pad, makes normal work after the interface butt joint. Simple structure, convenient operation and relatively controlled cost.

Description

Circuit board convenient for adjusting line sequence

Technical Field

The utility model belongs to the circuit board field, concretely relates to circuit board of convenient adjustment line preface.

Background

In the process of research and development and production practice, two devices with different line sequences need to be butted, which brings certain trouble to production and manufacture. For example, if the interface sequence of one device is 1234 and the interface sequence of the other device is 1324, if the two devices are connected by using the flat cable directly, the wrong sequence will cause the interfaces to fail to communicate normally, so the corresponding adjustment needs to be made to the line sequence.

The existing line sequence adjustment operation is generally finished by a worker to re-manufacture the circuit board, so that the working intensity of circuit board drawing personnel is increased; meanwhile, some existing line sequence adjusting devices are complex in structure, high in cost and inconvenient to operate.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a circuit board of easy operation, low cost's convenient adjustment line preface.

In order to solve the technical problem, the utility model provides a following technical scheme:

a circuit board convenient for adjusting a line sequence comprises two wiring seats arranged at two corresponding ends of the circuit board, wherein the first wiring seat is at least provided with a first terminal and a second terminal, and the second wiring seat is at least provided with a third terminal and a fourth terminal corresponding to the first terminal and the second terminal; four bonding pads which are mutually spaced and integrally arranged in a field shape are arranged between the first wiring seat and the second wiring seat;

a first bonding pad close to the first wire holder is connected with the first terminal through a first routing wire, and a third bonding pad which is far away from the first wire holder and corresponds to the first bonding pad is connected with a third terminal through a third routing wire; the second bonding pad close to the first terminal is connected with the fourth terminal through the fourth wiring, and the fourth bonding pad far away from the first terminal and corresponding to the second bonding pad is connected with the second terminal through the second wiring.

Further, the four pads are square in shape. Soldering tin can be preset on the welding pad, so that the welding of the resistor is facilitated, and the welding speed is improved.

Further, the first and second wire holders each include 4 terminals, two of which are connected to the pad structure.

Furthermore, the circuit board is also provided with two resistors, and pins or welding ends of the two resistors are matched with the welding pads, so that the resistors are conveniently welded, and the welding success rate is improved.

Furthermore, the resistor is a chip resistor, the size of the chip resistor is small, the defect rate of welding spots is low, automation is easy to realize, production efficiency is improved, and production cost is reduced.

The utility model has the advantages that:

the circuit board adopting the wiring board mode can realize line sequence adjustment only by welding two resistors on corresponding bonding pads after determining the mapping relation according to different communication requirements, so that the interfaces can normally work after being butted. Simple structure, convenient operation, a platemaking can be used to a plurality of scenes, has not only solved the problem that the needs line preface adjustment that the product design stage probably appears about system's butt joint, and the cost has also obtained relative control, has reached the purpose of cost reduction increase, can the wide application in miniaturized circuit, has improved the commonality.

Drawings

Fig. 1 is a plan view of a connection condition between a bonding pad and a connection terminal according to an embodiment of the circuit board of the present invention.

Fig. 2 is a plan view of resistance transverse welding when the circuit board in the embodiment of fig. 1 realizes serial port communication.

Fig. 3 is a plan view of resistance longitudinal welding when 485 communication is realized by the circuit board in the embodiment of fig. 1.

Fig. 4 is a plan view of the connection between two sets of terminals on the terminal block in the embodiment of fig. 1.

Description of the drawings: 100-a circuit board; 10-a first terminal; 11-routing one; 12-a first pad; 20-a second terminal; 21-routing two; 22-a second pad; 30-a third terminal; 31-routing three; 32-third pad; 40-a fourth terminal; 41-routing four; 42-a fourth pad; 50-a fifth terminal; 51-routing five; 60-a sixth terminal; 61-routing six; 70-a seventh terminal; 80-eighth terminal.

Detailed Description

For further understanding of the present invention, preferred embodiments of the present invention will be described below with reference to examples, but it should be understood that these descriptions are only for the purpose of further illustrating the features and advantages of the present invention, and are not intended to limit the claims of the present invention. The present invention will be further described with reference to the following detailed description.

The embodiment of the utility model provides a conveniently adjust circuit board of line preface, refer to fig. 1, this circuit board 100 includes two sets up in the circuit board 100 and corresponds the wire connection seat at both ends, the first wire connection seat is provided with first terminal 10 and second terminal 20 at least, the second wire connection seat is provided with third terminal 30 and fourth terminal 40 corresponding with first terminal 10 and second terminal 20 at least; and four pads which are mutually spaced and integrally arranged in a field shape are arranged on the circuit board 100 between the first wiring seat and the second wiring seat.

A first bonding pad 12 close to the first terminal is connected with the first terminal 10 through a first routing 11, and a third bonding pad 32 which is far away from the first terminal and is right corresponding to the first bonding pad 12 is connected with a third terminal 30 through a third routing 31; the second pad 22 close to the first terminal is connected to the fourth terminal 40 through a fourth trace 41, and the fourth pad 42 away from the first terminal and corresponding to the second pad 22 is connected to the second terminal 20 through a second trace 21. Note that, referring to fig. 1, the direct correspondence here indicates that the third pad 32 is located in a row with the first pad 12 and corresponds in position to the first pad 12 to distinguish from the second pad 22 and the fourth pad 42.

The circuit board 100 is also provided with two resistors, the two resistor welding ends of which are matched with four welding pads in a square shape. Solder can be preset on the

bonding pads

12, 22, 32 and 42, so that the chip resistors can be conveniently attached, and the welding speed and success rate are improved.

The aim of line sequence adjustment is fulfilled by welding the two resistors in different directions, the operation is simple, the cost is low, and one-step plate making can be used for multiple scenes, so that the purposes of cost reduction and efficiency improvement are achieved.

Referring to fig. 2, a specific resistance welding method is a method for connecting the circuit board 100 for serial communication, where the serial communication requirements are as follows: the RXD wire of the first device is in butt joint with the TXD wire of the second device, and the TXD wire of the first device is in butt joint with the RXD wire of the second device. By transversely mounting the resistors R1 and R2 on the first pad 12, the second pad 22, the third pad 32 and the fourth pad 42 on the circuit board 100, the first pad 12 and the second pad 22 are conducted, the third pad 32 and the fourth pad 42 are conducted, so that the first trace 11 is conducted with the fourth trace 41, the second trace 21 is conducted with the third trace 31, the RXD line of the first device is butted with the TXD line of the second device, and the TXD line of the first device is butted with the RXD line of the second device. The resistances of the resistors R1 and R2 range from 1 Ω to 10k Ω, and in this embodiment, the 10k Ω resistor is used, so that not only the electrical connection between the pads is realized, but also the flowing current is small due to the large impedance, thereby achieving the effect of reducing the power consumption.

Referring to fig. 3, another specific resistance welding method is to connect the circuit board 100 for 485 communication, where the 485 communication requirement is: the line A of the first device is connected with the line A of the second device, and the line B of the first device is connected with the line B of the second device. The resistors R3 and R4 are attached to the first pad 12, the third pad 32, the second pad 22 and the fourth pad 42 longitudinally on the circuit board 100, so that the first pad 12 is conducted with the third pad 32, the second pad 22 is conducted with the fourth pad 42, the first trace 11 is conducted with the trace 31, and the second trace 21 is conducted with the trace 41. And the butt joint of the line A of the first equipment and the line A of the second equipment is realized, and the butt joint of the line B of the first equipment and the line B of the second equipment is realized. It should be noted that, the smaller the resistances of the resistors R3 and R4 used at this time, the better, and preferably, the present embodiment uses a 0 Ω resistor to reduce loss and interference.

Referring to fig. 4, in a specific operation, a first terminal block on the circuit board 100 for switching is provided with 4

first terminals

50, 10, 20, 70, a second terminal block is provided with a corresponding

second terminal

60, 30, 40, 80, and 4 communication lines for communicating the two terminals are VCC, TXD, RXD, GND, respectively. The GND line connects the fifth terminal 50 and the sixth terminal 60 directly through the connected trace five 51, and the VCC line connects the seventh terminal 70 and the eighth terminal 80 directly through the connected trace six 61; after the connection of the RXD wire and the TXD wire needs to determine the mapping relation according to different communication requirements, two resistors are welded on the corresponding bonding pads transversely or longitudinally to complete the connection between the corresponding terminals, so that the interface can work normally after being butted.

The above description of the embodiments is only intended to help understand the method of the present invention and its core ideas. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The utility model provides a circuit board of convenient adjustment line preface which characterized in that includes:

the two wiring seats are arranged at two corresponding ends of the circuit board (100), the first wiring seat is at least provided with a first terminal (10) and a second terminal (20), and the second wiring seat is at least provided with a third terminal (30) and a fourth terminal (40) corresponding to the first terminal (10) and the second terminal (20); four bonding pads which are mutually spaced and integrally arranged in a field shape are arranged between the first wiring seat and the second wiring seat;

a first bonding pad (12) close to the first wire holder is connected with the first terminal (10) through a first wire (11), and a third bonding pad (32) which is far away from the first wire holder and is just corresponding to the first bonding pad (12) is connected with a third terminal (30) through a third wire (31); the second bonding pad (22) close to the first terminal is connected with the fourth terminal (40) through a fourth wiring (41), and the fourth bonding pad (42) which is far away from the first terminal and corresponds to the second bonding pad (22) is connected with the second terminal (20) through a second wiring (21).

2. The circuit board convenient for adjusting the line sequence according to claim 1, wherein: the four pads (12, 22, 32, 42) are square in shape.

3. The circuit board convenient for adjusting the line sequence according to claim 1, wherein: the first wire connecting seat and the second wire connecting seat respectively comprise 4 terminals, and two terminals are connected with the pad structure.

4. A circuit board for facilitating the adjustment of a line sequence according to any one of claims 1 to 3, wherein: two resistors are also configured, and pins or welding ends of the two resistors are matched with the welding pads.

5. The circuit board convenient for adjusting the line sequence of claim 4, wherein: the resistor is a chip resistor.