Double-layer composite stamping terminal

Abstract

The utility model relates to the technical field of electrical accessories, in particular to a double-layer composite stamping terminal, which comprises a joint section and a riveting section which are connected with each other, the side edges of the joint section are enclosed to form a closed barrel shape, and at least the riveting section comprises a first metal layer formed on the inner wall and a second metal layer formed on the outer wall. The edges of the two sides of the riveting section are bent to form two wing ends, and the two wing ends can be bent to wrap and press the wire core. The body structure is formed by stamping the plate with the first metal layer and the second metal layer, so that the stamping terminal is ensured to have the same contact material with other contact parts as a connecting part, the contact resistance is reduced by the same contact material, and the contact performance is ensured. Compared with a terminal made of a pure copper material, the weight and the cost can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electrical fittings, and particularly relates to a double-layer composite stamping terminal. BACKGROUND

[0002] As an indispensable connecting component in a circuit, the performance of a terminal directly relates to the stability and reliability of the entire system. Traditional terminal designs are usually made of a single material. When facing different material wire cores and external lines, the contact resistance often increases due to the inconsistency of the contact materials, affecting the current conduction efficiency and possibly causing overheating and other problems. In addition, the traditional terminal structure is prone to looseness or damage when dealing with environmental factors such as vibration, temperature changes, and mechanical impact, which may lead to connection failure. SUMMARY

[0003] I. Technical problems to be solved

[0004] The utility model aims to provide a double-layer composite stamping terminal with higher electrical connection contact performance and connection reliability.

[0005] II. Technical solutions

[0006] The utility model realizes the following technical solutions:

[0007] The utility model provides a double-layer composite stamping terminal, which comprises a jointing section and a riveting section connected to each other. The side edges of the jointing section form a closed cylindrical shape. At least the riveting section comprises a first metal layer formed on the inner wall and a second metal layer formed on the outer wall. The two side edges of the riveting section are bent into two wing ends. The two wing ends can be bent to cover and compress the wire core.

[0008] Further, a plurality of reinforcing ribs are arranged at equal intervals on the outer wall of the riveting section, and the reinforcing ribs are perpendicular to the axial direction of the riveting section.

[0009] Further, the riveting section is bent into a U shape, the two wing ends are bent into a circular arc shape, and the main parts of the two wing ends are parallel to each other and have outwardly bent arc edges at the side edges.

[0010] Further, the first metal layer is made of aluminum, and the second metal layer is made of copper. The semi-molten aluminum is rolled and combined with the copper plate to form a copper-aluminum composite thin plate for the riveting section.

[0011] Further, the jointing section comprises a first cylinder section and a second cylinder section connected to each other. The diameter of the second cylinder section is greater than that of the first cylinder section. The outer wall of the second cylinder section is slotted, and the slot opening is continuously bent outward at one side to form a stopper plate.

[0012] Further, the joint section and the riveting section are punched from the same plate material, and the joint section has the same double-layer composite structure of the first metal layer and the second metal layer as the riveting section.

[0013] Further, an arc-shaped recess is formed at the joint between the second cylinder section and the riveting section.

[0014] Further, one side edge of the second cylinder section is provided with a female plate formed by upward bending, and the other side edge is provided with a male plate formed by upward bending, and the female plate is provided with a slot capable of plugging the male plate.

[0015] Further, the first cylinder section is provided with a crown spring gradually tapered in an arc shape from both ends to the middle part.

[0016] III. Advantages

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. In the utility model, the plate material with the first metal layer and the second metal layer is punched to form the body structure, so that the punched terminal as a connecting component has the same contact material as other contact components, the same contact material reduces the contact resistance, and the contact performance is ensured. Compared with the terminal made of pure copper material, the weight and cost can be effectively reduced.

[0019] 2. The first cylinder section is provided with a crown spring gradually tapered in an arc shape from both ends to the middle part, the crown spring provides continuous elastic pressure, ensures good electrical contact between the terminal and the wire or the connector, and prevents loosening.

[0020] 3. The male plate is inserted into the slot of the female plate, the binding force between the two side edges of the joint section after being punched and bent is ensured, so that a complete cylindrical structure can be formed, and deformation is not easy.

[0021] 4. The two side edges of the riveting section are bent into two wing ends, the two wing ends can be bent to cover and press the wire core, the wing end can adjust the bending degree to adapt to different types of wire cores, and the safety and reliability of mechanical connection are improved. DRAWINGS

[0022] Figure 1 is a schematic diagram of the three-dimensional structure of the utility model;

[0023] Figure 2 is Figure 1 a top view of

[0024] Figure 3 is Figure 1 a right view of

[0025] Figure 4 is Figure 1a partial sectional perspective structural schematic view of the first end of the terminal;

[0026] Figure 5 is Figure 1 a partial enlarged view of part A in the figure;

[0027] 1, joint segment; 11, first cylinder segment; 12, second cylinder segment; 121, retreat stop clamping plate; 122, arc groove; 123, female plate; 124, male plate; 125, notch; 2, riveting segment; 21, wing end; 22, reinforcing rib; 23, arc curved edge; 3, first metal layer; 4, second metal layer; 5, crown spring. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0029] A double-layer composite stamping terminal, please refer to Figure 1 , comprising a joint segment 1 and a riveting segment 2 connected with each other, the side edges of the joint segment 1 are enclosed to form a closed cylinder, and the joint segment 1 is connected with external lines; the riveting segment 2 is crimped with the end part of the wire core, specifically, the two side edges of the riveting segment 2 are bent into two wing ends 21, and the two wing ends 21 can be bent to be wrapped and pressed on the wire core, and the wing end 21 can adjust the bending degree to adapt to different types of wire cores, and the safety and reliability of mechanical connection are improved.

[0030] In the embodiment, the riveting segment 2 comprises a first metal layer 3 formed on the inner wall and a second metal layer 4 formed on the outer wall, wherein the material of the first metal layer 3 is consistent with the material of the crimped wire core, and the material of the second metal layer 4 is consistent with the material of the external lines connected with the joint segment 1, so as to ensure the electrical contact performance of the stamping terminal as a connecting component and other contact components, and the same contact material reduces the contact resistance. Preferably, the first metal layer 3 is made of aluminum material, and the second metal layer 4 is made of copper material, and the semi-molten aluminum is rolled and combined on the copper plate to form a copper-aluminum composite sheet of the riveting segment 2, a eutectic layer is formed between the aluminum layer and the copper layer, the intermetallic diffusion corrosion problem is prevented, the bonding strength between the copper-aluminum materials is enhanced, and the thickness ratio of the aluminum layer to the copper layer is preferably 85:15, which is beneficial to weight reduction and cost reduction.

[0031] In the embodiment, the joint segment 1 and the riveting segment 2 are stamped from the same plate material, and the joint segment 1 has the same double-layer composite structure of the first metal layer 3 and the second metal layer 4 as the riveting segment 2, so as to facilitate integrated stamping forming.

[0032] The outer wall of the riveting section 2 is provided with a plurality of reinforcing ribs 22 at equal intervals, and the reinforcing ribs 22 are perpendicular to the axial direction of the riveting section 2. The reinforcing ribs 22 strengthen the structural strength of the riveting section 2 and prevent damage when the wing end 21 is bent. The riveting section 2 is bent into a U shape, and the two wing ends 21 are bent into a circular arc shape. The main body parts of the two wing ends 21 are parallel to each other and have outwardly bent arc edges 23 at the side edges. When the riveting section 2 is crimped outside the wire core, the arc edges 23 are tightly overlapped to form deeper indentations or deformations, thereby improving the bonding force between the wire core and the terminal and ensuring the crimping strength.

[0033] The joint section 1 comprises a first barrel section 11 and a second barrel section 12 connected to each other. The first barrel section 11 is provided with a crown spring 5 which is gradually tapered in an arc shape from both ends to the middle part and is clamped inside the first barrel section 11. The crown spring 5 provides continuous elastic pressure to ensure good electrical contact between the terminal and the wire or connector and prevent loosening.

[0034] The diameter of the second barrel section 12 is greater than that of the first barrel section 11. The outer wall of the second barrel section 12 is slotted and has a stop plate 121 which is kept continuous and bent outwardly at one side of the slot 125. The stop plate 121 can form a stop structure with the shell wrapped outside the terminal to prevent the terminal from loosening when the wire is pulled.

[0035] In addition, an arc groove 122 is provided at the connection between the second barrel section 12 and the riveting section 2. By subtracting the arc groove 122 between the second barrel section 12 and the riveting section 2, the riveting section 2 has a certain bending ability relative to the joint section 1 to adapt to the installation position and the cable orientation.

[0036] In the embodiment, one side edge of the second barrel section 12 has a female plate 123 bent upward, and the other side edge has a male plate 124 bent upward. The female plate 123 is provided with a slot 125 which can allow the male plate 124 to be inserted and pulled out. In use, the male plate 124 is inserted into the slot 125 of the female plate 123 to ensure the bonding force between the two side edges of the joint section 1 after being punched and bent, so that it can form a complete barrel structure and is not easy to deform.

[0037] The above-described embodiments are merely preferred embodiments of the present application and are not intended to limit the concept and scope of the present application. Various modifications and improvements to the technical solutions of the present application made by those of ordinary skill in the art without departing from the design concept of the present application shall fall within the protection scope of the present application. The technical content claimed by the present application has been fully recorded in the claims.

Claims

1. A double-layer composite stamping terminal characterized by, The joint section and the riveting section are connected to each other, the side edges of the joint section enclose a closed cylinder, at least the riveting section comprises a first metal layer formed on the inner wall and a second metal layer formed on the outer wall, and the two side edges of the riveting section are bent into two wing ends which can be bent to tightly wrap the wire core.

2. A double-layer composite stamping terminal according to claim 1, characterized in that, The outer wall of the riveting section is provided with a plurality of reinforcing ribs at equal intervals, and the reinforcing ribs are perpendicular to the axial direction of the riveting section.

3. The double-layer composite stamping terminal according to claim 1, characterized in that, The riveting section is bent into a U shape, the two wing ends are bent into a circular arc shape, the main body parts of the two wing ends are parallel to each other, and the side edges have outwardly bent arc edges.

4. A double-layer composite stamping terminal according to any one of claims 1-3, characterized in that, The first metal layer is made of aluminum, and the second metal layer is made of copper, and the semi-molten aluminum is rolled and combined with the copper plate to form a copper-aluminum composite sheet of the riveting section.

5. A double-layered composite stamping terminal according to claim 4, wherein The joint section comprises a first cylinder section and a second cylinder section connected to each other, the diameter of the second cylinder section is greater than that of the first cylinder section, the outer wall of the second cylinder section is slotted, and one side edge of the slot opening is kept continuous and outwardly bent to form a retreat stop plate.

6. A double-layered composite stamping terminal according to claim 5, wherein The joint section and the riveting section are punched from the same plate material, and the joint section has the same double-layer composite structure of the first metal layer and the second metal layer as the riveting section.

7. A double-layered composite stamping terminal according to claim 6, wherein An arc-shaped recess is formed at the connection between the second cylinder section and the riveting section.

8. A double-layered composite stamping terminal according to claim 6, wherein One side edge of the second cylinder section has a female plate bent upward, and the other side edge has a male plate bent upward, and a slot opening is formed on the surface of the female plate to allow the male plate to be inserted and pulled out.

9. A double-layered composite stamping terminal according to claim 5, wherein The first cylinder section is provided with a crown spring which is gradually tapered in an arc shape from the two ends to the middle part.

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