CN218770095U

CN218770095U - Welding terminal

Info

Publication number: CN218770095U
Application number: CN202223048718.7U
Authority: CN
Inventors: 杨金水
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-03-28
Anticipated expiration: 2032-11-16

Abstract

The utility model discloses a welding terminal, including the terminal body, when the assembly, at first place the wire on the terminal body, then fix the wire through electrically conductive fixed subassembly, then the terminal body that will be equipped with the wire carries out welded connection through weld part and circuit board, moreover, the steam generator is simple in structure, need not to adopt the manual work to perforate on the terminal body, in order to reduce staff's manipulation strength, reduce off-the-shelf defective rate, and convenient for operation, reduce the cost of labor, and save the terminal seat, reduce the volume of welding terminal, in order to reduce the volume that welding terminal and circuit board are connected the structure that forms, the equipment structure that makes use this structure is compacter.

Description

Welding terminal

Technical Field

The utility model relates to an electronic component's technical field, in particular to welding terminal.

Background

Patent 201420024637X discloses a binding post, a binding post has been described in this technical scheme, but conductive contact part locates the installation cavity and shutoff opening, binding post welds on the circuit board through the contact foot of base plate both sides, but the symmetry is located the contact inward buckling of base plate both sides and is formed the connecting portion that can the centre gripping wire, the wire penetrates in the terminal block from the through-hole, erect on the support and by the connecting portion centre gripping, be formed with the draw-in groove that supplies the embedding of connecting portion between the inner wall that the terminal block corresponds the installation cavity and the support, connecting portion fix a position through embedding in the draw-in groove, connecting portion correspond the through-hole position and are provided with the barb, when conductive contact part installs into the installation cavity, advance the barb inslot through the barb card and will conduct conductive contact part fixed, this binding post has effectively improved the joint strength of conductive contact part and terminal block, make the connection of conductive contact part and terminal block more firm stable, avoid conductive contact part to collect together and move and influence product property ability.

According to the technical scheme, the conventional wiring terminal is usually welded on the circuit board through the contact pins, then the wire is manually inserted into the terminal seat of the wiring terminal from the through hole, and then the wire is clamped by the connecting part, so that the wire is assembled on the circuit board through the wiring terminal, and the electrical connection between the wire and the circuit board is realized.

However, when the wiring terminal adopting the scheme and most of the existing wiring terminals are assembled, the wires penetrate into the terminal block from the through holes and are manually penetrated, the wires are easily not accurately assembled on the terminal block, poor connection is formed between the wires and the terminal block, defective products are easily caused, the production efficiency is low, and the terminal block and a circuit board are welded to form a structure which is large in size, so that the assembly space of equipment using the circuit board is occupied, and the assembly is not facilitated.

The utility model discloses it is not enough to solve prior art and research and propose promptly.

SUMMERY OF THE UTILITY MODEL

To above-mentioned most current binding post among the prior art when the assembly, the wire penetrates all to be the manual work from the through-hole and wear in the terminal seat, causes the defective products easily, the lower technical problem of production efficiency.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a welding terminal, includes the terminal body, be equipped with weld part and electrically conductive fixed subassembly on the terminal body, the weld part is used for being connected terminal body and circuit board, electrically conductive fixed subassembly can fix the wire, and can make circuit board and wire electric connection.

In order to ensure that the conductive fixing component can electrically connect the circuit board and the conducting wire, the conductive fixing component comprises a conductive part, the conductive part can fix the conductor section of the conducting wire and can electrically connect the terminal body and the conductor section.

In order to ensure the stability of the assembly between the conductive part and the conductor section, the conductive part comprises two conductive arms which are oppositely arranged on two sides of the terminal body, and the two conductive arms can be bent around the outer side of the conductor section.

In order to ensure the stability of the assembly between the conductive arm and the conductor segment, the width dimension of the conductive arm is D, wherein D satisfies: d is more than or equal to 1.6mm and less than or equal to 2mm.

In order to further improve the steadiness of assembly between electrically conductive fixed subassembly and the wire, electrically conductive fixed subassembly still includes the fixed part, the insulating section of wire can be fixed to the fixed part.

In order to ensure the stability of the assembly between the fixing part and the insulating section, the fixing part comprises two fixing arms which are oppositely arranged on two sides of the terminal body, and the two fixing arms can be bent around the outer side of the insulating section.

In order to ensure the stability of the assembly between the fixed arm and the insulating section, the fixed arm has a width dimension of E, wherein E satisfies: e is more than or equal to 1mm and less than or equal to 1.4mm.

In order to ensure the connection stability between the welding part and the circuit board, the surface of the welding part connected with the circuit board is a flat surface.

In order to ensure the steadiness of being connected between welding part and the circuit board, the length of the one side that welding part and circuit board are connected is L, and wherein L satisfies: l is more than or equal to 1mm and less than or equal to 2mm.

In order to ensure the stability of being connected between welding part and the circuit board, the width of the one side that welding part and circuit board are connected is R, and wherein R satisfies: r is more than or equal to 1mm and less than or equal to 1.3mm.

In order to further improve the connection stability between the welding terminal and the circuit board, the welding part and the conductive part are welded and connected with the welding spot on the circuit board.

The utility model has the advantages that:

The present invention will be further described with reference to the accompanying drawings and the detailed description.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a schematic front view of embodiment 1 of the present invention in an expanded state;

fig. 3 is a schematic side view of embodiment 1 of the present invention in a deployed state;

fig. 4 is a schematic structural view of the embodiment 1 of the present invention after being assembled with a lead;

FIG. 5 isbase:Sub>A schematic cross-sectional view taken along line A-A of FIG. 4;

fig. 6 is a schematic structural view of embodiment 1 of the present invention soldered on a circuit board;

FIG. 7 is an enlarged schematic view of portion B of FIG. 6;

fig. 8 is a schematic structural view of embodiment 2 of the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1:

as shown in fig. 1 to 7, the solder terminal of the present embodiment includes a terminal body 1, wherein the terminal body 1 is provided with a soldering portion 2 and a conductive fixing component 3, the soldering portion 2 is used for connecting the terminal body 1 with a circuit board 4, the conductive fixing component 3 can fix a wire 5, and can electrically connect the circuit board 4 with the wire 5;

Preferably, the terminal body 1, the welding part 2 and the conductive fixing component 3 are all made of conductive materials, so that the wire 5, the conductive fixing component 3, the terminal body 1, the welding part 2 and the circuit board 4 are electrically connected in sequence, the conductive performance among the wire 5, the welding terminal and the circuit board 4 is ensured, and the condition of poor contact between the circuit board 4 and the wire 5 is avoided.

As shown in fig. 1 to 5, the conductive fixing component 3 of the present embodiment includes a conductive portion 31, wherein the conductive portion 31 is capable of fixing a conductor segment 51 of a wire 5, and specifically, the conductor segment 51 is an exposed core wire at one end of the wire 5;

preferably, the conductive portion 31 of the present embodiment includes two conductive arms oppositely disposed on two sides of the terminal body 1, and the two conductive arms can be bent inward toward the central axis of the terminal body 1 by a stamping process and surround the outer side of the conductor segment 51 to clamp and fix the conductor segment 51, and when the wire is powered on, the wire, the conductive arms, the terminal body, the soldering portion, and the circuit board form a closed loop to form an electrical connection.

As shown in fig. 2, the width dimension of the conductive arm of the present embodiment is D, where D satisfies: d is more than or equal to 1.6mm and less than or equal to 2mm; by adopting the design, the two conductive arms can firmly clamp and fix the conductor section, and the width of the conductive arms is close to or equal to the length of the part of the conductor section extending out of the lead, so that the two conductive arms can cover most of the conductor section to ensure the conductivity;

if the size of the two conductive arms is larger than the range, the size of the terminal body is occupied by more conductive arms, so that waste of consumables is caused, the structure of the welding terminal is not compact, and the assembly of the welding terminal is not facilitated;

if the size of the two conductive arms is smaller than the range, the size of the two conductive arms occupies the undersize of the terminal body, so that the coating area of the two conductive arms on the conductor section is undersized, the two conductive arms are not fixed on the conductor section stably, and the conductor section is easy to separate from the two conductive arms to influence the conductivity.

Specifically, the width dimension D of the conductive arm in this embodiment is preferably 1.8mm.

As shown in fig. 1 to 5, the conductive fixing component 3 of the present embodiment further includes a fixing portion 32, the fixing portion 32 can fix an insulating section 52 of the wire 5, specifically, the insulating section 52 is an insulating sheath covering the outer side of the core wire,

preferably, the fixing portion 32 of the present embodiment includes two fixing arms oppositely disposed on two sides of the terminal body 1, and the two fixing arms can be formed by a stamping process so that the two fixing arms are bent inward toward the central axis of the terminal body 1 and surround the outside of the insulating section 52 to clamp and fix the insulating section 52.

As shown in fig. 2, the width dimension of the fixing arm of the present embodiment is E, where E satisfies: e is more than or equal to 1mm and less than or equal to 1.4mm; by adopting the design, the fixing arms have enough clamping areas to ensure that the two fixing arms can firmly clamp and fix the insulating section;

if the size of the two fixing arms is larger than the range, the size of the terminal body is occupied by more fixing arms, so that waste of consumables is caused, the structure of the welding terminal is not compact, and the assembly of the welding terminal is not facilitated;

if the size of the two fixing arms is smaller than the range, the covering area of the two fixing arms on the insulating section is too small, the fixing of the two fixing arms on the insulating section is unstable, the insulating section is easy to loosen on the fixing arms, the stability of the conductor section on the conductive part is affected, and the assembly of the lead on the welding terminal is affected.

Specifically, the width dimension E of the fixing arm in this embodiment is preferably 1.2mm.

As shown in fig. 1 to 7, a surface of the circuit board 4 to which the soldering portion 2 of the present embodiment is connected is a flat surface, the circuit board 4 has a flat welding point with a flat surface, and the soldering portion 2 abuts against the flat welding point and is connected by a soldering process; with such a design, the contact area between the soldering portion 2 and the circuit board 4 can be increased, so that the solder can easily cover the whole connecting surface between the soldering portion 2 and the circuit board 4,

therefore, the solder can be uniformly soldered to the soldering part 2, and the solder can be prevented from being displaced or from being poorly soldered at the time of soldering, and the solder can be prevented from falling off by increasing the holding force of the soldering between the solder and the soldering part 2.

Preferably, the welding part 2 is rectangular, so that the production of welding terminals is facilitated, and the production difficulty is reduced.

Preferably, the joint of the welding part 2 and the end of the terminal body 1 is provided with a bending part, and the bending part is positioned at two sides of the welding part 2, so that the structural strength between the welding part 2 and the terminal body 1 is improved and the service life of the welding terminal is prolonged.

The terminal body 1, the welding part 2, the conductive part 31, the fixing part 32 and the bending part are of an integrally formed structure, the thicknesses of all parts of the welding terminal are consistent or close, the thickness dimension of the welding terminal is T, and T satisfies the following conditions: t is more than or equal to 0.21mm and less than or equal to 0.25mm, and by adopting the design, the production of the welding terminal is facilitated, and the production difficulty is reduced.

Specifically, the thickness dimension T of the solder terminal in the present embodiment is preferably 0.23mm.

Specifically, the fixing portions 32 are located on both sides of the other end of the terminal body 1.

As shown in fig. 2, the length of the surface of the soldering portion 2 connected to the circuit board 4 in the present embodiment is L, where L satisfies: l is more than or equal to 1mm and less than or equal to 2mm, and by adopting the design, the welding part 2 is ensured to have enough welding length, the welding distance between the welding part and the circuit board is ensured, and the connection strength between the welding part and the welding on the circuit board is ensured.

If be greater than this scope, the length overlength of welding part causes the waste of consumptive material, and in the use, the welding part is because factors such as gravity or wire weight, and the welding part takes place to buckle easily and causes the damage for welding terminal is malfunctioning, influences the normal operating of equipment.

If the length of the soldering portion is smaller than the range, the length of the soldering portion is too small, the soldering portion is difficult to be positioned on the soldering point of the circuit board due to the limitation of the conductive portion (for example, the side wall of the conductive portion abuts against the side wall of the circuit board), and the connection strength between the soldering portion and the soldering point of the circuit board is weak, so that the soldering portion and the soldering point are easy to separate, and the service life of the soldering terminal is affected.

Specifically, the length L of the welded portion in the present embodiment is preferably 1.5mm.

Preferably, as shown in fig. 2, the width of the surface of the soldering portion 2 connected to the circuit board 4 in the present embodiment is R, where R satisfies: r is larger than or equal to 1mm and smaller than or equal to 1.3mm, and by adopting the design, the enough welding area of the welding part 2 is ensured, the welding area of the welding part and the welding point of the circuit board is ensured, and the connection strength between the welding part and the welding on the circuit board is ensured.

If it is larger than this range, the welding area of the welding part is too large, which causes waste of consumables and affects the beauty of the circuit board, even the distance between adjacent welding terminals is too short, which easily causes short circuit and other problems and affects the normal operation of the circuit board.

(1) If the welding area is smaller than the range, the welding area of the welding part is too small, the welding part is difficult to be positioned on the welding point of the circuit board, the connection strength between the welding part and the welding point of the circuit board is weak, the welding part and the welding point are easy to separate, and the service life of the welding terminal is influenced.

Specifically, the width dimension R of the welded portion in the present embodiment is preferably 1.3mm.

Preferably, the welding terminal of the present invention is generally welded to the dry reed pipe circuit board or welded to the hall switch circuit board by using a flat welding process.

Preferably, the utility model discloses a thickness dimension and the thickness dimension of circuit board of the structure after welding terminal and wire assembly are close or equal to make the structure after welding terminal and the wire assembly not increase the thickness dimension of circuit board, the circuit board assembly of being convenient for is on the service equipment.

The utility model discloses an assembly principle of welding terminal does:

before the assembly, two conductive arms and two fixed arms of terminal body all are in the state that relative interval set up, when the assembly, place the heart yearn that exposes of one end of wire between two conductive arms, place the wire between two fixed arms, through the punching press, make two conductive arms and two fixed arms inwards buckle towards the central axis of terminal body simultaneously, two conductive arms surround in the outside that exposes the heart yearn, fix exposing the heart yearn with the centre gripping, two fixed arms surround in the outside of wire insulation sheath, fix the wire with the centre gripping, then the welding part that will weld the terminal after with the wire assembly offsets with the solder joint of circuit board, then weld the welding part on the solder joint of circuit board through the flat welding technology, thereby accomplish the welding of welding terminal on the circuit board.

The utility model discloses a welding terminal simple structure, convenient assembling can wholly adopt mechanical equipment to assemble in assembling process, and the artifical supplementary that can significantly reduce improves production efficiency, and the defective rate that the finished product that just significantly reduces caused because of artifical plug wire ensures off-the-shelf quality.

Example 2:

for the sake of simplicity, only the points of difference of embodiment 2 from embodiment 1 are described below; this example 2 differs from example 1 in that:

as shown in fig. 8, the soldering portion 2 and the conductive portion 31 in the present embodiment are both soldered to the solder joints of the circuit board, so that the solder can wrap the soldering portion 2, the conductive portion 31 and the conductor segment 51 clamped and fixed by the conductive portion 31, the connection stability between the soldering terminal and the circuit board can be further improved, and the conductor segment can be wrapped by the solder, thereby further ensuring the conductivity between the conductor segment and the circuit board.

The technical content of the present invention is further described by the embodiments only, so that the reader can understand it more easily, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation according to the present invention is protected by the present invention. The protection scope of the present invention is subject to the claims.

Claims

1. A welding terminal, includes terminal body (1), its characterized in that: be equipped with weld part (2) and electrically conductive fixed subassembly (3) on terminal body (1), weld part (2) are used for being connected terminal body (1) and circuit board (4), electrically conductive fixed subassembly (3) can fix wire (5), and can make circuit board (4) and wire (5) electric connection.

2. The solder terminal of claim 1, wherein: the conductive fixing component (3) comprises a conductive part (31), wherein the conductive part (31) can fix a conductor section (51) of the lead (5) and can electrically connect the terminal body (1) with the conductor section (51).

3. The solder terminal of claim 2, wherein: the conductive part (31) comprises two conductive arms which are oppositely arranged on two sides of the terminal body (1), and the two conductive arms can be bent around the outer side of the conductor section (51).

4. The solder terminal of claim 3, wherein: the width dimension of the conductive arm is D, wherein D satisfies: d is more than or equal to 1.6mm and less than or equal to 2mm.

5. The solder terminal of claim 2, wherein: the conductive fixing component (3) further comprises a fixing part (32), and the fixing part (32) can fix the insulating section (52) of the lead (5).

6. The solder terminal of claim 5, wherein: the fixing portion (32) comprises two fixing arms which are oppositely arranged on two sides of the terminal body (1), and the two fixing arms can be bent around the outer side of the insulating section (52).

7. The solder terminal of claim 6, wherein: the width dimension of the fixed arm is E, wherein E satisfies: e is more than or equal to 1mm and less than or equal to 1.4mm.

8. The solder terminal of claim 1, wherein: the surface of the welding part (2) connected with the circuit board (4) is a flat surface.

9. The solder terminal of claim 8, wherein: the length of the face that welding part (2) and circuit board (4) are connected is L, and wherein L satisfies: l is more than or equal to 1mm and less than or equal to 2mm.

10. The solder terminal of claim 2, wherein: the welding part (2) and the conductive part (31) are connected with the welding point on the circuit board (4) in a welding way.