Composite terminal and connector

Abstract

The utility model relates to electric appliance technical field, especially a kind of composite terminal and connector. The composite terminal includes outer terminal and inner terminal, outer terminal includes connecting portion, inner terminal is installed in the connecting portion of outer terminal, inner terminal has two clamping jaws and two barbs, inner terminal is installed in connecting portion by two clamping jaws, two barbs respectively from the outside of the front end two sides of connecting portion and fold out connecting portion, connector includes plastic main body and above-mentioned composite terminal, plastic main body is provided with multiple terminal slots, composite terminal is installed in terminal slot by two barbs on inner terminal. The utility model composite terminal adopts laminated design, can guarantee its radial dimension, reduce terminal hollow area simultaneously, increase current overload capacity, barb is set on inner terminal, can improve the overall strength and deformation resistance of barb, the connector with the composite terminal of the utility model, the terminal can realize the stable connection with plastic main body, and the tensile strength and anti-seismic performance of terminal are stronger.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a composite terminal and connector. Background Technology

[0002] As electronic devices evolve towards miniaturization, high density, and high-speed transmission, the stability and reliability of connectors, as core components for signal and power transmission, are of paramount importance. Traditional connector designs typically employ a one-piece molded terminal hook structure to connect and fix the connector to the plastic body. While this spring-loaded hook design offers some ease of assembly, it is prone to fatigue deformation under long-term use or external stress, leading to reduced springback and consequently, less secure terminal fixation within the connector body. Furthermore, this one-piece molded hook structure design results in a large terminal cutout area and poor current-carrying capacity.

[0003] Chinese patent application number 201922381302.9 discloses a composite open-circuit terminal for pin-type connectors, comprising a body and a sheath. The body has a guide rod, a transition bracket, a first rivet, and a second rivet. Both the first and second rivets are V-shaped, with the height of the second rivet greater than that of the first rivet, and the included angle between the two arms of the second rivet greater than that between the two arms of the first rivet. The sheath is a through-hole rectangular parallelepiped that surrounds the transition bracket and has two spring tabs that protrude outward from two opposite sides of the sheath. This composite open-circuit terminal not only provides a stable fixation to the housing of the pin-type connector and can withstand greater insertion and extraction forces, but also has strong compressive strength and is not easily deformed, thus avoiding electrical connection failures. However, the through-hole rectangular parallelepiped shape of the sheath, which surrounds the transition bracket, significantly increases the radial width of the terminal connection area, thereby affecting the layout of high-density connectors. Utility Model Content

[0004] The purpose of this invention is to solve the technical problems of existing connector terminals using an integrally molded barbed structure for connection and fixation, which are prone to deformation under long-term use or external force, and the significant increase in the radial width of the connection part of existing composite open terminals, affecting the layout of high-density connectors. This invention provides a composite terminal and connector. In the composite terminal, the outer and inner terminals are stacked, with the inner terminal embedded in the outer terminal, ensuring the radial dimension of the terminal. This structural design reduces the open area of ​​the terminal, increases current overload capacity, and the barb is set on the inner terminal, improving the overall strength and deformation resistance of the barb. The connector with this composite terminal has independently set inner and outer terminals, with the barb located on the inner terminal, thus giving the terminal greater rigidity and effectively improving the connection stability between the terminal and the plastic body, as well as the tensile strength and shock resistance of the terminal.

[0005] The technical solution adopted by this utility model to achieve the above objectives is as follows:

[0006] A composite terminal includes an outer terminal and an inner terminal. The outer terminal includes a connecting portion, and the inner terminal is installed inside the connecting portion of the outer terminal. The inner terminal has two claws and two barbs. The inner terminal is installed inside the connecting portion by the two claws, and the two barbs are respectively folded outward from both sides of the front end of the connecting portion.

[0007] Furthermore, the inner terminal includes a first bottom wall and two side walls. The two side walls are symmetrically arranged on both sides of the first bottom wall. The upper rear end of each of the two side walls is provided with outwardly bent claws. The upper front end of each of the two side walls is provided with barbs. The front ends of the barbs are folded outwards. The front end of the first bottom wall is connected to the second bottom wall through a connecting wall. The width of the connecting wall is smaller than the width of the first bottom wall and the second bottom wall. The front end of the second bottom wall is connected to an upwardly inclined wall. The front end of the inclined wall is connected to a horizontal wall.

[0008] Furthermore, the first bottom wall, two side walls, two claws, two barbs, connecting wall, second bottom wall, inclined wall and horizontal wall are integrally formed structures.

[0009] Furthermore, the inner front end of each of the two barbs is rounded.

[0010] Furthermore, the connecting part of the outer terminal is provided with a slot that matches the claw, and the claw is engaged in the slot.

[0011] Furthermore, the external terminal also includes a hose clamping part, a wire clamping part, and a limiting part. The hose clamping part, the wire clamping part, the limiting part, and the connecting part are connected in sequence. The bottom of the hose clamping part and the wire clamping part are both arc-shaped structures, and the included angle between the two arms of the hose clamping part is greater than the included angle between the two arms of the wire clamping part. The limiting part is provided with a limiting boss.

[0012] A connector includes a plastic body and composite terminals, wherein the plastic body is provided with a plurality of terminal slots, and the composite terminals are mounted in the terminal slots by two barbs on the inner terminals.

[0013] Furthermore, the plurality of terminal slots are arranged in two rows, one above the other, on the plastic body.

[0014] Furthermore, a latch is provided at the upper end of the plastic body.

[0015] Furthermore, the spacing between two adjacent composite terminals is 2.5mm, 3.0mm, 3.5mm, 4.2mm or 5.08mm.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: the outer terminal and the inner terminal in the composite terminal adopt a stacked design, with the inner terminal embedded in the outer terminal, which can ensure the radial dimension of the terminal. The outer terminal is responsible for current and signal transmission. Its structural design can reduce the hollow area of ​​the terminal and increase the current overload capacity. The barb is set on the inner terminal, which can improve the overall strength and deformation resistance of the barb. The connector with this composite terminal has the inner and outer terminals set independently and the barb is set on the inner terminal, which makes the terminal more rigid and can effectively improve the connection stability between the terminal and the plastic body. The terminal has strong tensile strength and shock resistance. At the same time, the compact design of the outer terminal and the inner terminal can adapt to various terminal arrangement methods with different spacings, meeting the space requirements of precision electronic equipment. Attached Figure Description

[0017] Figure 1 This is a structural diagram of a composite terminal according to the present invention.

[0018] Figure 2 This is a structural diagram of the inner terminal of a composite terminal according to the present invention.

[0019] Figure 3 This is an exploded view of the connector according to the present invention.

[0020] Figure 4 This is a cross-sectional view of the structure of a connector composite terminal assembled with a plastic body according to this utility model.

[0021] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0022] In the diagram: 1. External terminal, 11. Tube clamping part, 12. Wire clamping part, 13. Limiting part, 131. Limiting boss, 14. Connecting part, 141. Slot, 2. Internal terminal, 21. First bottom wall, 22. Side wall, 23. Claw, 24. Barb, 25. Connecting wall, 26. Second bottom wall, 27. Inclined wall, 28. Horizontal wall, 3. Plastic body, 31. Terminal slot, 32. Groove, 321. Side wall, 33. Lock, 4. Wire. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings and embodiments, but the present invention is not limited to the specific embodiments.

[0024] like Figure 1-2The composite terminal shown includes an outer terminal 1 and an inner terminal 2. The outer terminal 1 includes a tubing clamping part 11, a wire clamping part 12, a limiting part 13, and a connecting part 14 connected in sequence. The bottom of the tubing clamping part 11 and the wire clamping part 12 are both arc-shaped, so as to better fit the wire and the tubing. The included angle between the two arms of the tubing clamping part 11 is greater than the included angle between the two arms of the wire clamping part 12. The limiting part 13 is provided with a limiting boss 131. During the process of inserting the composite terminal into the plastic body 3, the limiting boss 131 can position the composite terminal to accurately limit its position in the plastic body 3.

[0025] An inner terminal 2 is installed inside the connecting part 14 of the outer terminal 1. The inner terminal 2 has two claws 23 and two barbs 24. The inner terminal 2 is installed inside the connecting part 14 by the two claws 23. The connecting part 14 is provided with a slot 141 that matches the claws 23. The claws 23 are engaged in the slot 141. The two barbs 24 are respectively folded outward from both sides of the front end of the connecting part 14 and extend out of the connecting part 14.

[0026] Preferably, the inner terminal 2 includes a first bottom wall 21 and two side walls 22. The two side walls 22 are symmetrically arranged on both sides of the first bottom wall 21. The upper rear end of the two side walls 22 is provided with outwardly bent claws 23, and the upper front end of the two side walls 22 is provided with barbs 24, and the front end of the barbs 24 is folded outward. The front end of the first bottom wall 21 is connected to the second bottom wall 26 through a connecting wall 25, and the width of the connecting wall 25 is smaller than the width of the first bottom wall 21 and the second bottom wall 26. The front end of the second bottom wall 26 extends into the limiting part 13 of the outer terminal 1 and is connected to an upwardly inclined wall 27. The front end of the inclined wall 27 is connected to a horizontal wall 28.

[0027] Preferably, the first bottom wall 21, the two side walls 22, the two claws 23, the two barbs 24, the connecting wall 25, the second bottom wall 26, the inclined wall 27, and the horizontal wall 28 are integrally formed.

[0028] Preferably, the inner front end of both barbs 24 is provided with rounded corners.

[0029] A connector, such as Figure 3-5As shown, the device includes a plastic body 3 and the aforementioned composite terminal. The plastic body 3 has multiple terminal slots 31 arranged in two rows. The composite terminal is installed in the terminal slots 31 by two barbs 24 on the inner terminal 2. The terminal slots 31 have grooves 32 that cooperate with the barbs 24, and the grooves 32 have inclined sidewalls 321. When the composite terminal is inserted into the plastic body 3, the rounded corners of the barbs 24 abut against the inclined sidewalls 321 of the grooves 32 to achieve a locking action. The inclined sidewalls 321 can better cooperate with the barbs 24, thereby effectively preventing the terminal from loosening or falling off due to external vibration or impact.

[0030] Preferably, a latch 33 is provided at the upper end of the plastic body 3.

[0031] Preferably, the spacing between two adjacent composite terminals in each row of composite terminals is 2.5mm, 3.0mm, 3.5mm, 4.2mm or 5.08mm.

[0032] During the assembly of the connector: the outer terminal 1 and the inner terminal 2 are engaged by the claw 23 and the slot 141 to achieve the assembly of the composite terminal. The outer terminal 1 is used for current and signal transmission, and the inner terminal 2 is used for fixation. The composite terminal is riveted with the wire 4, and the front end of the wire inside the wire 4 is exposed outside the tubing. The front end of the wire is fixed by the wire clamping part 12, so that the wire and the outer terminal 1 are electrically connected. The tubing is fixed by the tubing clamping part 11. Then the composite terminal is inserted into the terminal slot 31 of the plastic body 3. When the composite terminal is pushed into place, there will be a tactile feedback. The barb 24 of the inner terminal 2 will catch the plastic body 3 to prevent the terminal from falling off.

[0033] In this composite terminal, the outer and inner terminals are stacked, with the inner terminal embedded within the outer terminal to ensure the terminal's radial dimensions. The outer terminal is responsible for current and signal transmission. Its structural design reduces the open area of ​​the terminal and increases current overload capacity. The barb is located on the inner terminal, improving its overall strength and resistance to deformation. Connectors with this composite terminal have independently set inner and outer terminals, with the barb located on the inner terminal, resulting in stronger terminal rigidity and effectively improving the connection stability between the terminal and the plastic body. The terminal has high tensile strength and shock resistance. Furthermore, the compact design of the outer and inner terminals can accommodate various terminal arrangement methods with different spacings, meeting the space requirements of precision electronic equipment.

[0034] The above description, in conjunction with preferred technical solutions, provides a further detailed explanation of this utility model. It should not be construed that the specific implementation of the utility model is limited to these descriptions. For those skilled in the art, simple deductions and substitutions can be made without departing from the concept of this utility model, and all such modifications and substitutions should be considered within the scope of protection of this utility model.

Claims

1. A composite terminal, characterized in that: It includes an outer terminal and an inner terminal. The outer terminal includes a connecting part. The inner terminal is installed in the connecting part of the outer terminal. The inner terminal has two claws and two barbs. The inner terminal is installed in the connecting part by the two claws. The two barbs are respectively folded outward from both sides of the front end of the connecting part and extend outward from the connecting part.

2. A composite terminal according to claim 1, characterized in that: The inner terminal includes a first bottom wall and two side walls. The two side walls are symmetrically arranged on both sides of the first bottom wall. The upper rear end of each of the two side walls is provided with outwardly bent claws. The upper front end of each of the two side walls is provided with barbs, the front ends of which are folded outwards. The front end of the first bottom wall is connected to a second bottom wall through a connecting wall, and the width of the connecting wall is smaller than the width of the first bottom wall and the second bottom wall. The front end of the second bottom wall is connected to an upwardly inclined wall, and the front end of the inclined wall is connected to a horizontal wall.

3. A composite terminal according to claim 2, characterized in that: The first bottom wall, two side walls, two claws, two barbs, connecting wall, second bottom wall, inclined wall and horizontal wall are integrally formed.

4. A composite terminal according to claim 1, characterized in that: The inner front ends of both barbs are rounded.

5. A composite terminal according to claim 1, characterized in that: The connecting part of the external terminal is provided with a slot that matches the claw, and the claw is engaged in the slot.

6. A composite terminal according to claim 1, characterized in that: The external terminal also includes a hose clamping part, a wire clamping part, and a limiting part. The hose clamping part, the wire clamping part, the limiting part, and the connecting part are connected in sequence. The bottom of the hose clamping part and the wire clamping part are both arc-shaped structures, and the included angle between the two arms of the hose clamping part is greater than the included angle between the two arms of the wire clamping part. The limiting part is provided with a limiting boss.

7. A connector, characterized in that: It includes a plastic body and a composite terminal according to any one of claims 1 to 6, wherein the plastic body is provided with a plurality of terminal slots, and the composite terminal is installed in the terminal slots by two barbs on the inner terminal.

8. A connector according to claim 7, characterized in that: The multiple terminal slots are arranged in two rows, one above the other, on the plastic body.

9. A connector according to claim 7, characterized in that: The upper end of the plastic body is provided with a buckle.

10. A connector according to claim 7, characterized in that: The spacing between two adjacent composite terminals is 2.5mm, 3.0mm, 3.5mm, 4.2mm or 5.08mm.

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