CN217468846U

CN217468846U - Connecting terminal applied to high-precision and high-stability connecting wire

Info

Publication number: CN217468846U
Application number: CN202221588603.4U
Authority: CN
Inventors: 杨保强
Original assignee: Qingdao iTechene Technologies Co ltd
Current assignee: Qingdao iTechene Technologies Co ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2022-09-20
Anticipated expiration: 2032-06-24

Abstract

The utility model discloses a connecting terminal applied to a high-precision and high-stability connecting wire, which comprises a terminal shell, a terminal welding pin and a connecting wire, wherein the terminal welding pin is arranged in the terminal shell and comprises a welding pin guide groove, and a welding pin pressing plate, a welding pin pressing plate and a welding pin inserting tip are sequentially arranged on the welding pin guide groove from bottom to top; the connecting wire comprises a wire core and an insulating layer, the upper port of the wire core is located at the top of the welding pin pressing sheet, and the insulating layer is located between the welding pin pressing sheet and the welding pin guide groove. The utility model has the advantages that: through exposing sinle silk part with the connecting wire and lengthening to terminal pad top position, the terminal is when injecting the PCB diaphragm orifice, and the sinle silk can pass the PCB board, just can be with terminal pad and sinle silk reliable welding on PCB board pad simultaneously through once soldering tin processing to reduce contact resistance, guarantee that the product has high accuracy and stability.

Description

Connecting terminal applied to high-precision and high-stability connecting wire

Technical Field

The utility model relates to an electric energy meter accessory technical field, especially a be applied to binding post of high accuracy, high stable connecting wire.

Background

In a conventional electric energy meter, a connection terminal is connected with a connection wire in a manner as shown in fig. 1 and fig. 2, namely, an insulation layer and a wire core of the connection wire are pressed at the tail end of a terminal pad through a pressing sheet, but contact resistance is generated at a connection point of a pressing position, so that the metering accuracy and stability of a high-precision electric energy meter are affected. And the effective connection distance between the wiring terminal and the wire core is short, and the wiring terminal is easy to fall off. The common solution is as follows: and the tin point treatment is carried out at the connecting point of the crimping position, and the process is difficult to control and has poor consistency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome above technical defect, provide a be applied to binding post of high accuracy, high stable connecting wire, reduce contact resistance, guarantee binding post's high accuracy and stability.

The utility model discloses a realize that the technical scheme that its technical objective was taken is: a connecting terminal applied to a high-precision and high-stability connecting line comprises a terminal shell, a terminal welding pin and a connecting line, wherein the terminal welding pin is arranged in the terminal shell and comprises a welding pin guide groove; the connecting wire comprises a wire core and an insulating layer, the upper port of the wire core is located at the top of the welding pin pressing sheet, and the insulating layer is located between the welding pin pressing sheet and the welding pin guide groove.

Preferably, the welding pin pressing plates comprise two pressing plates symmetrically arranged on two sides of the welding pin guide groove.

Preferably, the welding pin pressing sheets comprise three groups which are arranged on two sides of the welding pin guide groove in a staggered mode.

Preferably, the widths of the pressing sheets of the three groups of welding pins are gradually reduced from bottom to top.

Preferably, each set of the welding pin pressing sheets comprises two sheets.

Preferably, the PCB board is further included, a pad hole is formed in the PCB board, and a welding pin inserting tip is inserted in the pad hole.

Preferably, the distance between pad holes on the PCB is the same as the distance between terminal pins inside the terminal housing.

Preferably, the terminal housing is a plastic housing.

The beneficial effects of the utility model are that: through exposing sinle silk part with the connecting wire and lengthening to terminal pad top position, the terminal is when injecting the PCB diaphragm orifice, and the sinle silk can pass the PCB board, just can be with terminal pad and sinle silk reliable welding on PCB board pad simultaneously through once soldering tin processing to reduce contact resistance, guarantee that the product has high accuracy and stability.

Drawings

Fig. 1 is an overall schematic view of a conventional connection terminal;

FIG. 2 is a schematic view of the connection between the connection terminal and the connection wire;

fig. 3 is an overall schematic view of the terminal of the present invention;

FIG. 4 is a schematic view of a terminal pin structure;

FIG. 5 is a schematic view showing a state where the connecting wire is placed on the terminal pins;

FIG. 6 is a schematic view of the connection wire being buckled in the terminal pin;

fig. 7 is a schematic view illustrating a state in which the connection terminal and the PCB panel are combined.

Labeled as:

1. a terminal housing; 2. a terminal welding pin; 3. a connecting wire; 4. a PCB board; 21. a welding pin guide groove; 22. a welding pin pressing plate;

23. pressing a welding pin; 24. inserting a welding pin; 31. a wire core; 32. an insulating layer; 41. and a pad hole.

Detailed Description

The present invention will be further explained with reference to the embodiments of the drawings.

Example one

As shown in fig. 1-7: the utility model provides a be applied to binding post of high accuracy, high stable connecting wire, includes terminal shell 1, terminal welding needle 2 and connecting wire 3, terminal shell 1 is the plastic casing. The terminal welding pin 2 is arranged in the terminal shell 1, the terminal welding pin 2 comprises a welding pin guide groove 21, and a welding pin pressing plate 22, a welding pin pressing plate 23 and a welding pin inserting tip 24 are sequentially arranged on the welding pin guide groove 21 from bottom to top; the connecting wire 3 comprises a wire core 31 and an insulating layer 32, the upper port of the wire core 31 is positioned at the top of the welding pin pressing sheet 23, and the insulating layer 32 is positioned between the welding pin pressing sheet 22 and the welding pin guide groove 21.

The welding pin pressing plates 22 comprise two pressing plates which are symmetrically arranged on two sides of the welding pin guide groove 21.

The welding pin pressing sheets 23 comprise three groups which are arranged on two sides of the welding pin guide groove 21 in a staggered mode; the widths of the three groups of welding pin pressing sheets 23 are gradually reduced from bottom to top; each set of the welding pin pressing sheets 23 comprises two sheets.

The PCB comprises a PCB 4, wherein a pad hole 41 is formed in the PCB 4, and a welding pin inserting tip 24 is inserted in the pad hole 41. The distance between pad holes 41 on the PCB 4 is the same as the distance between terminal pins 2 inside the terminal housing 1.

The utility model discloses a theory of operation and working process as follows:

strip the head insulating layer 32 of connecting wire 3, spill connecting wire sinle silk 31, place connecting wire sinle silk 31 and connecting wire 3 in welding needle guide slot 21 to guarantee the position on the top of connecting wire sinle silk 31, reach the clamp plate position of the top of welding needle clamp plate 23. The symmetrically arranged welding pin pressing plates 22 are pressed on the part of the connecting wire 3 where the insulating layer 32 is not peeled off, and the three groups of welding pin pressing plates 23 which are arranged in a staggered mode are pressed on the connecting wire core 31 where the insulating layer 32 is peeled off.

Terminal shell 1 is the plastic casing, and when terminal welding needle 2 inserted the PCB board and corresponds pad hole 41, welding needle point 24 inserted together with fixed connecting wire sinle silk 31, inserted PCB board 4's pad hole 41 together to spill PCB board 4, through once welding, just can realize welding needle point 24 and connecting wire sinle silk 31, simultaneously with PCB board pad hole 41's connection fixed, reduced the contact resistance of crimping position junction point, guarantee binding post's high accuracy and stability.

Claims

1. The utility model provides a be applied to binding post of high accuracy, high stable connecting wire, includes terminal shell, terminal welding pin and connecting wire, its characterized in that: the terminal welding pin is arranged in the terminal shell and comprises a welding pin guide groove, and a welding pin pressing plate, a welding pin pressing plate and a welding pin inserting tip are sequentially arranged on the welding pin guide groove from bottom to top; the connecting wire comprises a wire core and an insulating layer, the upper port of the wire core is located at the top of the welding pin pressing sheet, and the insulating layer is located between the welding pin pressing sheet and the welding pin guide groove.

2. The connecting terminal applied to a high-precision and high-stability connecting wire as claimed in claim 1, wherein: the welding pin pressing plates comprise two pressing plates which are symmetrically arranged on two sides of the welding pin guide groove.

3. The connecting terminal applied to a high-precision and high-stability connecting wire as claimed in claim 1, wherein: the welding pin pressing sheets comprise three groups, and are arranged on two sides of the welding pin guide groove in a staggered mode.

4. A terminal block for a high-precision, highly stable connecting wire according to claim 3, wherein: the widths of the three groups of welding pin pressing sheets are gradually decreased from bottom to top.

5. The connecting terminal applied to a high-precision and high-stability connecting wire as set forth in claim 4, wherein: each group of welding pin pressing sheets comprises two sheets.

6. The connecting terminal applied to a high-precision and high-stability connecting wire as claimed in claim 1, wherein: the PCB is provided with a pad hole, and a welding pin inserting tip is inserted in the pad hole.

7. The connecting terminal applied to a high-precision and high-stability connecting wire as set forth in claim 6, wherein: and the distance between the pad holes on the PCB is the same as the distance between the terminal welding pins in the terminal shell.

8. The connecting terminal applied to a high-precision and high-stability connecting wire as set forth in claim 7, wherein: the terminal shell is a plastic shell.