Fisheye terminal

Abstract

The utility model provides a fisheye terminal, which can pass through relatively large current and is not easy to damage a circuit board. The fisheye terminal comprises a terminal body and a fisheye body, the fisheye body is connected with the terminal body, the fisheye body is provided with two elastic arms which are arranged at an interval and are connected end to end, the two elastic arms define a fisheye hole, the thickness of the fisheye terminal is 1.10 mm-1. 30 mm, and the fisheye body is connected with the fisheye body. The ratio of the width of each elastic arm to the maximum width of each fisheye hole is 1: (1.1-2.3).

Description

Technical Field

[0001] This application relates to the technical field of connection terminals, and more particularly to a fish-eye terminal. Background Art

[0002] In the new energy field, high-current connectors are usually required to transmit relatively high currents. As a current connector that is connected by plugging, the fish-eye terminal is widely used because of its simple connection method. Usually, the fish-eye terminal is plugged and matched with the conductive holes on the circuit board (PCB), such as the plated-through holes (PTH), so that it can be electrically connected to the circuit board. However, in the related art, the fish-eye terminal can only pass a relatively small current of more than ten amperes, making it difficult for the fish-eye terminal to be applied to fields that require large currents such as new energy. Utility Model Content

[0003] Embodiments of this application provide a fish-eye terminal, which can improve the technical problem that the current allowed to pass through the fish-eye terminal is small.

[0004] Embodiments of this application provide a fish-eye terminal, including a terminal body and a fish-eye body. The fish-eye body is connected to the terminal body. The fish-eye body has two elastic arms that are spaced apart and connected end to end. The two elastic arms define a fish-eye hole. Among them, the thickness of the fish-eye terminal is 1.10 mm to 1.30 mm, and the ratio of the width of a single elastic arm to the maximum width of the fish-eye hole is 1:(1.1 - 2.3).

[0005] In one embodiment, the width of the elastic arm is 0.48 mm to 0.81 mm, and the maximum width of the fish-eye hole is 0.75 mm to 1.32 mm.

[0006] In one embodiment, the length of the fish-eye hole is 3.30 mm to 3.95 mm.

[0007] In one embodiment, the length of the fish-eye body is 6.40 mm to 7.20 mm.

[0008] In one embodiment, the maximum width of the fish-eye body is 2.18 mm to 2.46 mm.

[0009] In one embodiment, the fish-eye body further includes pins and roots located at both ends of the elastic arm. One end of each elastic arm is connected to the pin, and the other end of each elastic arm is connected to the root. The root is connected to the terminal body.

[0010] In one embodiment, the pin is set to be conical, and the large end of the pin is connected to the elastic arm.

[0011] In one embodiment, the fish-eye terminal sequentially includes a copper matrix, a nickel layer, and a tin layer from the inside to the outside.

[0012] In one embodiment, the thickness of the nickel layer is 1.0 μm to 3.0 μm, and the thickness of the tin layer is 0.3 μm to 1.1 μm.

[0013] In one embodiment, the fish-eye hole is shuttle-shaped or oval-shaped.

[0014] In one embodiment, the number of the fish-eye bodies is multiple, and the multiple fish-eye bodies are arranged at intervals on the same end of the terminal body, and the lengths of the fish-eye bodies protruding from the terminal body are the same.

[0015] Advantages of the embodiments of the present application:

[0016] In the embodiments of the present application, by increasing the thickness of the fish-eye terminal, the current-carrying capacity of the fish-eye terminal is enhanced, so that the allowable passing current is increased; at the same time, the sizes of the fish-eye body and the fish-eye hole are reasonably adjusted to ensure that the elastic holding force of the fish-eye body is appropriate, so that reliable electrical connection can be formed with the conductive hole of the circuit board and the circuit board is not easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a front view structural schematic diagram of a fish-eye terminal provided by an embodiment of the present application;

[0019] Figure 2 is a front view structural schematic diagram of a fish-eye terminal provided by another embodiment of the present application;

[0020] Figure 3 is a side view structural schematic diagram of a fish-eye terminal provided by another embodiment of the present application;

[0021] Figure 4 is a front view structural schematic diagram of a fish-eye body in a fish-eye terminal provided by another embodiment of the present application;

[0022] Figure 5 is Figure 4 a top view structural schematic diagram of the fish-eye body in;

[0023] Figure 6 is Figure 4 a sectional structural schematic diagram taken along the A-A direction in;

[0024] Figure 7 Yes Figure 6 It is a schematic enlarged view of part B in it.

[0025] Reference numerals:

[0026] 1. Fish-eye terminal;

[0027] 11. Terminal body;

[0028] 12. Fish-eye body; 121. Elastic arm; 122. Pin; 123. Root; 124. Copper matrix; 125. Nickel layer; 126. Tin layer;

[0029] 13. Fish-eye hole. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0031] In addition, it should be understood that the specific implementation manners described here are only for explaining and interpreting the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the orientation terms such as "upper" and "lower" usually refer to the upper and lower in the actual use or working state of the device, specifically the drawing direction in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0032] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0033] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, an electrical connection, or a communication with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0034] The term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article or apparatus comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or apparatus. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

[0035] In the description of the embodiments of the present application, words such as "example" or "for example" are used to represent exemplification, illustration or description. Any embodiment or design solution described as "for example" or "for instance" in the embodiments of the present application is not construed as being more preferred or having more advantages than another embodiment or design solution. The use of words such as "example" or "for example" is intended to present relative concepts in a clear manner.

[0036] Regarding the technical problem in the related art that the current allowed to pass through the fish-eye terminal is small, the inventors of the present application improved the current-carrying capacity of the fish-eye terminal by increasing the thickness of the fish-eye terminal, thereby increasing the magnitude of the current allowed to pass through the fish-eye terminal. However, during the research process, the inventors found that after the thickness of the fish-eye terminal increased, the overall mechanical strength of the fish-eye terminal would also increase accordingly, which would lead to the fish-eye body of the fish-eye terminal being prone to damage the circuit board when inserted into the conductive hole on the circuit board. Based on this, when increasing the thickness of the fish-eye terminal, the inventors adjusted the sizes of the fish-eye body and the fish-eye hole together, so that the fish-eye body has both a large current-carrying capacity and an elastic deformation force, so that the fish-eye terminal can pass a large current and is not easily damaged to the circuit board.

[0037] Please refer to Figures 1 to 3 , the embodiments of the present application provide a fish-eye terminal 1 that can allow a large current, such as a current greater than 30A, to pass through. The fish-eye terminal 1 can be applied to the following fields, including but not limited to electric vehicles, general power supplies, medical devices, solar energy, and new energy, etc.

[0038] Specifically, the fish-eye terminal 1 includes a terminal body 11, and the terminal body 11 can be designed in a plate-like or strip-like shape. The fish-eye terminal 1 further includes fish-eye bodies 12, and the number of fish-eye bodies 12 can be one or more, and "more than one" means two or more. The fish-eye body 12 is designed in a structure with a large middle and tapered ends. The fish-eye body 12 is connected to the terminal body 11, specifically, the fish-eye body 12 is integrally formed at one end of the terminal body 11. As a conductive component, the fish-eye terminal 1 is usually a metal part, and during the manufacturing process of the fish-eye terminal 1, the fish-eye terminal 1 can be obtained by stamping on a metal plate. Optionally, the terminal body 11 and the fish-eye body 12 are located in the same plane. The fish-eye body 12 serves as a plugging part for mating with the conductive holes on the circuit board. In order to endow the fish-eye body 12 with elasticity to better conduct electricity with the conductive holes, along the thickness direction of the fish-eye body 12, a fish-eye hole 13 is penetrated through the fish-eye body 12, and the shape of the fish-eye hole 13 is large in the middle and tapered at both ends. Optionally, the fish-eye hole 13 is shuttle-shaped or oval-shaped. Due to the setting of the fish-eye hole 13, elastic arms 121 are formed on the fish-eye body 12. The elastic arms 121 are located on both sides of the fish-eye hole 13 and correspond to the fish-eye hole 13. The elastic arms 121 are used for elastic deformation to abut against the hole wall of the conductive hole to form a reliable electrical connection, and the fish-eye hole 13 reserves a deformation space for the elastic arms 121 on both sides. Conversely, a pair of spaced-apart and end-to-end connected elastic arms 121 define the fish-eye hole 13. Optionally, the elastic arms 121 are in an arc line shape and are arranged facing each other. Further, the thickness H of the fish-eye terminal 1 is 1.10 mm to 1.30 mm. In the related art, the thickness of the fish-eye terminal is 0.60 mm to 0.80 mm. Compared with this, the thickness H of the fish-eye terminal 1 in the embodiment of the present application increases, so that the current-carrying capacity of the fish-eye terminal 1 is improved, and the current allowed to pass through it will also increase. At the same time, the mechanical strength of the fish-eye terminal 1 will also increase. As an example, the thickness H of the fish-eye terminal 1 is 1.10 mm, 1.13 mm, 1.15 mm, 1.18 mm, 1.20 mm, 1.22 mm, 1.25 mm, 1.28 mm or 1.30 mm.

[0039] When using the fish-eye terminal 1, insert the fish-eye body 12 of the fish-eye terminal 1 into the conductive hole of the circuit board. The fish-eye body 12 deforms. Specifically, a pair of elastic arms 121 are elastically contracted under the extrusion of the conductive hole and cooperate with the conductive hole. Generally, the larger the width W1 of the elastic arm 121, the smaller the fish-eye hole 13, and the higher the mechanical strength of the fish-eye body 12. It is more difficult for the fish-eye body 12 to deform, so the fish-eye body 12 is likely to break through the conductive hole and damage the circuit board. On the contrary, the smaller the width W1 of the elastic arm 121, the larger the fish-eye hole 13, and the easier it is for the fish-eye body 12 to deform. However, the mechanical strength of the fish-eye body 12 decreases, so it is difficult for the fish-eye body 12 to maintain elasticity and form a reliable electrical connection with the conductive hole. Based on the situation that when the thickness H of the fish-eye terminal 1 is increased to 1.10 mm - 1.30 mm, the overall mechanical strength of the fish-eye body 12 is also improved, in the embodiment of the present application, by reasonably adjusting the sizes of the fish-eye body 12 and the fish-eye hole 13, specifically, controlling the ratio of the width W1 of a single elastic arm 121 to the maximum width W2 of the fish-eye hole 13 to be 1:(1.1 - 2.3). Within this range, it can ensure that the elastic holding force of the fish-eye body 12 is appropriate, which can not only form a reliable electrical connection with the conductive hole but also is not easy to damage the circuit board. As an example, the ratio of W1 to W2 is 1:1.1, 1:1.2, 1:1.3, 1:1.4, 1:1.5, 1:1.6, 1:1.7, 1:1.8, 1:1.9, 1:2.0, 1:2.1, 1:2.2 or 1:2.3.

[0040] Therefore, by increasing the thickness H of the fish-eye terminal 1 to 1.10 mm - 1.30 mm and simultaneously controlling the ratio of the width W1 of a single elastic arm 121 to the maximum width W2 of the fish-eye hole 13 to be 1:(1.1 - 2.3), the fish-eye terminal 1 provided by the embodiment of the present application can allow a larger current to pass through while not being easy to damage the circuit board, and has good electrical contact reliability.

[0041] In some embodiments, please refer to Figure 2 and Figure 3, the width W1 of the elastic arm 121 is 0.48 mm to 0.81 mm, and the maximum width W2 of the fish-eye hole 13 is 0.75 mm to 1.32 mm. As an example, W1 is 0.48 mm, 0.50 mm, 0.55 mm, 0.60 mm, 0.65 mm, 0.70 mm, 0.75 mm or 0.81 mm. As an example, W2 is 0.75 mm, 0.80 mm, 0.85 mm, 0.90 mm, 0.95 mm, 1.00 mm, 1.05 mm, 1.10 mm, 1.15 mm, 1.20 mm, 1.25 mm, 1.30 mm or 1.32 mm. When the thickness H of the fish-eye terminal 1 is 1.10 mm to 1.30 mm, by setting the width W1 of the elastic arm 121 and the maximum width W2 of the fish-eye hole 13 within the above ranges, the fish-eye body 12 can form a reliable electrical connection with the conductive hole and is not easily damaged to the circuit board.

[0042] In some embodiments, please refer to Figure 2 , the length L1 of the fish-eye hole 13 is 3.30 mm to 3.95 mm. As an example, L1 is 3.30 mm, 3.35 mm, 3.40 mm, 3.45 mm, 3.50 mm, 3.55 mm, 3.60 mm, 3.65 mm, 3.70 mm, 3.75 mm, 3.80 mm, 3.85 mm, 3.90 mm or 3.95 mm. Setting the length L1 of the fish-eye hole 13 within the above ranges can endow the fish-eye body 12 with better elastic deformation ability and elastic holding force.

[0043] In some embodiments, please refer to Figure 2 , the length L2 of the fish-eye body 12 is 6.40 mm to 7.20 mm. As an example, L2 is 6.40 mm, 6.60 mm, 6.80 mm, 7.00 mm or 7.20 mm. Setting the length L2 of the fish-eye body 12 within the above ranges can endow the fish-eye body 12 with better elastic deformation ability and elastic holding force.

[0044] In some embodiments, please refer to Figure 2 , the maximum width W3 of the fish-eye body 12 is 2.18 mm to 2.46 mm. As an example, W3 is 2.18 mm, 2.20 mm, 2.22 mm, 2.24 mm or 2.46 mm. Setting the maximum width W3 of the fish-eye body 12 within the above ranges can endow the fish-eye body 12 with better elastic deformation ability and elastic holding force.

[0045] In some embodiments, please refer to Figures 4 to 6, the fish-eye body 12 further includes a pin 122 and a root 123, where the pin 122 and the root 123 are respectively located at two ends of the two elastic arms 121 and are connected to the two elastic arms 121. Specifically, one end of each elastic arm 121 is connected to the pin 122, the other end of each elastic arm 121 is connected to the root 123, and the root 123 is connected to the terminal body 11. Usually, the fish-eye terminal 1 is obtained by stamping a metal plate, and the elastic arms 121, the pin 122 and the root 123 are also integrally formed. It can be understood that one ends of the two oppositely arranged elastic arms 121 are both connected to the pin 122, and the other ends are both connected to the root 123. Optionally, the pin 122 is arranged in a conical shape, and the large end of the pin 122 is connected to the elastic arm 121. When the fish-eye terminal 1 is inserted into the circuit board, the pin 122 can play a good guiding role, enabling the fish-eye body 12 to be quickly and stably inserted into the conductive hole, which is more convenient to use.

[0046] In some embodiments, please refer to Figure 7 , the fish-eye terminal 1 sequentially includes a copper substrate 124, a nickel layer 125 and a tin layer 126 from the inside to the outside. By providing the tin layer 126 on the copper substrate 124, the tin layer 126 can improve the corrosion resistance and conductivity of the product; and a nickel layer 125 is also provided between the copper substrate 124 and the tin layer 126. Compared with directly providing the tin layer 126 on the copper substrate 124, providing the tin layer 126 on the nickel layer 125 can effectively improve the bonding force of the tin layer 126. Optionally, the thickness of the nickel layer 125 is 1.0 μm to 3.0 μm, such as 1.0 μm, 1.5 μm, 2.0 μm, 2.5 μm or 3.0 μm. Optionally, the thickness of the tin layer 126 is 0.3 μm to 1.1 μm, such as 0.3 μm, 0.5 μm, 0.7 μm, 0.9 μm or 1.1 μm. Optionally, the preparation process of the fish-eye terminal 1 is: stamping a copper plate to obtain the copper substrate 124, that is, the copper-based fish-eye terminal, electroplating the nickel layer 125 on the surface of the copper-based fish-eye terminal, and electroplating the tin layer 126 on the surface of the nickel layer 125.

[0047] In some embodiments, please refer to Figure 1, the number of the fish-eye bodies 12 is multiple, and the multiple fish-eye bodies 12 are arranged at intervals on the same end of the terminal body 11. Optionally, the lengths of the fish-eye bodies 12 extending out of the terminal body 11 are the same. As an example, the number of the fish-eye bodies 12 is 3, namely the first fish-eye body, the second fish-eye body and the third fish-eye body. The 3 fish-eye bodies 12 are arranged at equal intervals in sequence and disposed on one end of the terminal body 11, and the distance between the center lines of two adjacent fish-eye bodies 12 is 5 mm. Optionally, the multiple fish-eye bodies 12 are located on the same straight line. By increasing the number of the fish-eye bodies 12, multi-channel shunting of large current is performed, so that the current flowing through each fish-eye body 12 becomes smaller, reducing heat generation. Similarly, when the current passing through each fish-eye body 12 is the same, by increasing the number of the fish-eye bodies 12, the magnitude of the current allowed to pass through the fish-eye terminal 1 can be increased, thereby enabling the fish-eye terminal 1 to be applicable in a large current scenario.

[0048] To prove the progressiveness of the embodiments of the present application, the following two specific embodiments are provided in the present application:

[0049] Embodiment 1

[0050] The thickness H of the fish-eye terminal 1 is 1.20 mm. The fish-eye terminal 1 includes 1 fish-eye body 12. The width W1 of the elastic arm 121 is 0.53 mm; the length L1 of the fish-eye hole 13 is 3.85 mm; the maximum width W2 of the fish-eye hole 13 is 1.22 mm; the length L2 of the fish-eye body 12 is 6.7 mm; the maximum width W3 of the fish-eye body 12 is 2.28 mm.

[0051] Embodiment 2

[0052] The thickness H of the fish-eye terminal 1 is 1.20 mm. The fish-eye terminal 1 includes 1 fish-eye body 12. The width W1 of the elastic arm 121 is 0.76 mm; the length L1 of the fish-eye hole 13 is 3.40 mm; the maximum width W2 of the fish-eye hole 13 is 0.85 mm; the length L2 of the fish-eye body 12 is 6.5 mm; the maximum width W3 of the fish-eye body 12 is 2.36 mm.

[0053] The current allowed to pass through the fish-eye terminal 1 provided in the above Embodiment 1 and Embodiment 2 can reach more than 40 A.

[0054] The embodiments of the present application have been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A fisheye terminal, characterized in that: It includes a terminal body and a fisheye body, wherein the fisheye body is connected to the terminal body, and the fisheye body has two elastic arms that are spaced apart and connected end to end, and the two elastic arms define a fisheye hole, wherein the thickness of the fisheye terminal is 1.10mm~1.30mm, and the ratio of the width of a single elastic arm to the maximum width of the fisheye hole is 1:(1.1~2.3).

2. The fisheye terminal according to claim 1, characterized in that: The width of the elastic arm is 0.48 mm to 0.81 mm, and the maximum width of the fisheye hole is 0.75 mm to 1.32 mm.

3. The fisheye terminal according to claim 2, characterized in that: The length of the fisheye hole is 3.30 mm to 3.95 mm.

4. The fisheye terminal according to claim 2, characterized in that: The length of the fisheye body is 6.40 mm to 7.20 mm; and / or the maximum width of the fisheye body is 2.18 mm to 2.46 mm.

5. The fisheye terminal according to claim 1, characterized in that: The fisheye body also includes pins and roots located at both ends of the elastic arms, one end of each elastic arm is connected to the pin, the other end of each elastic arm is connected to the root, and the root is connected to the terminal body.

6. The fisheye terminal according to claim 5, characterized in that: The plug pin is configured to be conical, and the large end of the plug pin is connected to the elastic arm.

7. The fisheye terminal according to claim 1, characterized in that: The fisheye terminal comprises a copper substrate, a nickel layer and a tin layer in sequence from the inside to the outside.

8. The fisheye terminal according to claim 7, characterized in that: The thickness of the nickel layer is 1.0 μm to 3.0 μm, and the thickness of the tin layer is 0.3 μm to 1.1 μm.

9. The fisheye terminal according to claim 1, characterized in that: The fisheye hole is in a shuttle shape or an ellipse shape.

10. The fisheye terminal according to any one of claims 1 to 9, characterized in that: There are multiple fisheye bodies, and the multiple fisheye bodies are arranged at intervals on the same end of the terminal body, and the lengths of the fisheye bodies extending out of the terminal body are consistent.

Images