Large-current rectangular terminal

Abstract

The utility model discloses a large-current rectangular terminal, which comprises a terminal main body, the terminal main body comprises an upper layer metal plate and a lower layer metal plate, the upper layer metal plate and the lower layer metal plate respectively comprise an overlapping part and a side plate part integrally connected with the front end of the overlapping part, the upper overlapping part and the lower overlapping part are overlapped and fixed, and the left side edge or the right side edge of the upper overlapping part and the right side edge of the lower overlapping part are connected into a whole through a bending part; the upper side plate part is located above the lower side plate part at an interval, so that a rectangular insertion cavity is formed between the upper side plate part and the lower side plate part; the metal elastic sheet is mounted on the bottom surface of the upper side plate part or the top surface of the lower side plate part; the protection frame comprises an upper buckle plate, a lower buckle plate and a front baffle integrally connected between the front ends of the upper buckle plate and the lower buckle plate; the front baffle shields the opening in the front end of the inserting cavity, the upper buckling plate is buckled to the top of the upper side plate part, and the lower buckling plate is buckled to the bottom of the lower side plate part. Therefore, the terminal is simple in structure and easy to produce and manufacture, the size of the terminal main body is flexibly designed, and the large-current requirement is better met.

Description

Technical Field

[0001] This utility model relates to the field of high current terminals, and in particular to a high current rectangular terminal. Background Technology

[0002] In high-power equipment (such as new energy vehicles and industrial equipment), the demand for high current is becoming increasingly apparent, and terminals that typically meet the high current requirements are used.

[0003] For example, CN104037523A discloses a high-current terminal, comprising an assembly of mutually cooperating elastic clips and contact terminals. The elastic clip includes a C-shaped body and two opposing upper and lower elastic cantilever arms. The ends of the upper and lower elastic cantilever arms converge towards their center surfaces, and their sides form a V-shape. The contact terminal includes a hollow rectangular column. The top and bottom surfaces of the hollow rectangular column extend opposite upper and lower contact arms towards the opening of its front end face. The ends of the upper and lower contact arms converge towards their center surfaces and curve outwards, and their sides also form a V-shape. An adapter arm is connected to the rear end face of the hollow rectangular column. The upper and lower contact arms have relatively long suspension lengths, which, due to elastic arm fatigue, results in a less than ideal service life. Furthermore, its main structure is a spring-loaded design, which inevitably presents certain difficulties in processing and requires high-precision manufacturing, hindering further reductions in production costs.

[0004] For example, CN108666790A discloses an arc-shaped stamped high-current terminal, including a male terminal and a female terminal, which are matched. The male terminal includes a front part and a rear part. The front part of the male terminal is a cuboid prism with an arc-shaped surface. The front part and the rear part of the male terminal are connected to each other. The female terminal includes a front part and a rear part. The front part of the female terminal is a hollow cuboid with a rectangular arc-shaped spring on its inner wall. There is a gap between the arc-shaped spring and the inner wall of the front part of the female terminal. The front part and the rear part of the female terminal are connected to each other. The arc-shaped spring on the inner wall of the front part of the male terminal and the front part of the female terminal are matched. The female terminal, being a hollow cuboid made of copper, requires bending to form a hollow rectangle, resulting in numerous bending operations and high processing difficulty. This also hinders further reduction of production costs.

[0005] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0006] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a high-current rectangular terminal with a simple structure, easy to manufacture, which helps to reduce production costs. At the same time, it allows for flexible design of the terminal body size to better meet the high-current requirements.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A high-current rectangular terminal includes:

[0009] The terminal body includes an upper metal plate and a lower metal plate; the upper metal plate includes an upper stacked portion and an upper side plate integrally connected to the front end of the upper stacked portion, and the lower metal plate includes a lower stacked portion and a lower side plate integrally connected to the front end of the lower stacked portion. The upper stacked portion and the lower stacked portion are stacked and fixed, and their left or right edges are connected as one piece by a bending portion. The upper side plate is spaced above the lower side plate so that a rectangular insertion cavity is formed between the two.

[0010] A metal spring is installed on the bottom surface of the upper side plate or the top surface of the lower side plate. The metal spring has an elastic contact protrusion that protrudes toward the insertion cavity in the vertical direction.

[0011] The protective frame includes an upper buckle plate, a lower buckle plate, and a front baffle integrally connected between the front ends of the upper buckle plate and the lower buckle plate; the front baffle is located at the front end of the upper side plate and the lower side plate to cover the front opening of the insertion cavity, the upper buckle plate is fastened to the top of the upper side plate, and the lower buckle plate is fastened to the bottom of the lower side plate.

[0012] As a preferred embodiment, on the overlapping surfaces of the upper and lower overlapping portions, one is provided with a first positioning hole and the other is provided with a first positioning protrusion 1. After the upper and lower overlapping portions are stacked and fixed, the first positioning protrusion 1 is embedded in the corresponding first positioning hole.

[0013] As a preferred embodiment, the first positioning protrusion 1 is formed by punching and deforming on the back side, and the first positioning hole is a punched through hole.

[0014] As a preferred embodiment, the metal spring is provided with a second positioning hole, and correspondingly, a second positioning protrusion is provided on the bottom surface of the upper side plate or the top surface of the lower side plate facing the insertion cavity, and the second positioning protrusion is embedded in the corresponding second positioning hole.

[0015] As a preferred embodiment, two metal springs are provided, one metal spring is installed on the bottom surface of the upper side plate, and the other metal spring is installed on the top surface of the lower side plate. A second positioning protrusion is provided on the bottom surface of the upper side plate and the top surface of the lower side plate, facing the insertion cavity. A stamped blind hole corresponding to the second positioning protrusion is formed on the top surface of the upper side plate and the bottom surface of the lower side plate.

[0016] As a preferred embodiment, the left and / or right edges of the upper buckle plate are bent downward along the corresponding left and / or right edges of the upper side plate and riveted to the bottom of the upper side plate.

[0017] And / or:

[0018] The left and / or right edges of the lower buckle plate are bent upward along the corresponding left and / or right edges of the lower side plate and riveted to the top of the lower side plate.

[0019] As a preferred embodiment, the top of the upper buckle is bent to form an upwardly extending upper protective metal spring, and the bottom of the lower buckle is bent to form a downwardly extending lower protective metal spring.

[0020] As a preferred embodiment, the top of the upper buckle is bent upward to form an upper support flap, and the bottom of the lower buckle is bent downward to form a lower support flap.

[0021] As a preferred embodiment, the terminal body is made of copper, the metal spring is made of beryllium copper, and the protective frame is made of stainless steel.

[0022] As a preferred embodiment, the terminal body is rectangular in top view, and the upper and lower stacked portions are stacked and fixed to form a rectangle.

[0023] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly forms a high-current rectangular terminal through the design of the terminal body, metal spring, and protective frame. The terminal body has a simple structure, reducing the difficulty of bending. Combined with the protective frame, the front baffle of the protective frame is located at the front end of the upper and lower side plates to cover the front opening of the insertion cavity. The upper buckle is fastened to the top of the upper side plate, and the lower buckle is fastened to the bottom of the lower side plate, thus forming the frame of the rectangular insertion cavity. The protective frame is a component independent of the terminal body. It is manufactured separately, and its structure is simple and easy to manufacture. This helps to reduce the production cost of the entire high-current rectangular terminal. At the same time, it is convenient to flexibly design the size of the terminal body to better meet the high-current requirements.

[0024] Moreover, the terminal body, metal spring, and protective frame can be flexibly selected with emphasis on their respective functions, taking into account the high current terminal's performance and production costs.

[0025] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0026] Figure 1This is a perspective view of a high-current rectangular terminal according to an embodiment of the present invention;

[0027] Figure 2 This is an exploded view of the high-current rectangular terminal according to an embodiment of the present invention;

[0028] Figure 3 This is a diagram showing the semi-finished product state during the manufacturing process of the terminal body according to an embodiment of this utility model;

[0029] Figure 4 This is a finished product state diagram during the manufacturing process of the terminal body according to an embodiment of this utility model;

[0030] Figure 5 This is a diagram showing the state of the spring clip installed on the terminal body according to an embodiment of the present invention;

[0031] Figure 6 This is a perspective view of the spring sheet according to an embodiment of the present utility model;

[0032] Figure 7 This is a side view of a high-current rectangular terminal according to an embodiment of the present invention. Detailed Implementation

[0033] Please refer to Figures 1 to 7 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0034] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] A high-current rectangular terminal includes a terminal body 10, two spring contacts 20, and a U-shaped protective frame 30. The two spring contacts 20 are mounted on the terminal body 10 to provide elastic contact conduction function, and the protective frame 30 is mounted on the terminal body 10 to form a frame together with the terminal body 10, while also protecting the terminal body 10.

[0036] The terminal body 10 includes an upper metal plate 11 and a lower metal plate 12. The upper metal plate 11 includes an upper stacked portion 111 and an upper side plate portion 112 integrally connected to the front end of the upper stacked portion 111. The lower metal plate 12 includes a lower stacked portion 121 and a lower side plate portion 122 integrally connected to the front end of the lower stacked portion 121. The terminal body 10 is rectangular in top view. The upper stacked portion 111 and the lower stacked portion 121 are stacked and fixed to form a rectangle. The overlapping portions 121 are stacked and fixed, and their left or right edges are connected as one piece by the bending portion 13. The upper side plate portion 112 is positioned above the lower side plate portion 122 at intervals to form a rectangular insertion cavity 101 between them. On the overlapping surfaces of the upper overlapping portion 111 and the lower overlapping portion 121, one has a first positioning hole 3 and the other has a first positioning protrusion 1. After the upper overlapping portion 111 and the lower overlapping portion 121 are stacked and fixed, the first positioning protrusion 1 is embedded in the corresponding first positioning hole 3. The first positioning protrusion 1 is formed by punching and deforming on the back side, and the first positioning hole 3 is a punched through hole.

[0037] The metal spring 20 is installed on the bottom surface of the upper side plate 112 or the top surface of the lower side plate 122. The metal spring 20 has an elastic contact protrusion protruding towards the insertion cavity in the vertical direction. The metal spring 20 is provided with a second positioning hole. Correspondingly, a second positioning protrusion 2 is provided on the bottom surface of the upper side plate 112 or the top surface of the lower side plate 122 towards the insertion cavity. The second positioning protrusion 2 is embedded in the corresponding second positioning hole. Two metal springs 20 are provided. One metal spring 20 is installed on the bottom surface of the upper side plate 112 and the other metal spring 20 is installed on the top surface of the lower side plate 122. The bottom surface of the upper side plate 112 and the top surface of the lower side plate 122 are both provided with second positioning protrusions 2 protruding towards the insertion cavity. Stamped blind holes corresponding to the corresponding second positioning protrusions 2 are formed on the top surface of the upper side plate 112 and the bottom surface of the lower side plate 122.

[0038] The protective frame 30 is U-shaped and is mounted on the terminal body 10. After the protective frame 30 is mounted on the terminal body 10, the insertion cavity is a closed rectangle. It includes an upper buckle plate 31, a lower buckle plate 33, and a front baffle 32 integrally connected between the front ends of the upper buckle plate 31 and the lower buckle plate 33. The front baffle 32 is located at the front end of the upper side plate portion 112 and the lower side plate portion 122 to cover the front opening of the insertion cavity. The upper buckle plate 31 is fastened to the top of the upper side plate portion 112, and the lower buckle plate 33 is fastened to the bottom of the lower side plate portion 122. The left and / or right edges of the upper buckle plate 31 are bent downward along the corresponding left and / or right edges of the upper side plate portion 112 and riveted to the bottom of the upper side plate portion 112; and / or: the left and / or right edges of the lower buckle plate 33 are bent upward along the corresponding left and / or right edges of the lower side plate portion 122 and riveted to the top of the lower side plate portion 122. The top of the upper buckle plate 31 is bent to form an upwardly extending upper protective metal spring piece 34, and the bottom of the lower buckle plate 33 is bent to form a downwardly extending lower protective metal spring piece. The top of the upper buckle plate 31 is bent upward to form an upper support flap 35, and the bottom of the lower buckle plate 33 is bent downward to form a lower support flap.

[0039] Preferably, the terminal body 10 is made of copper, with a large size selected as needed. It is a single sheet with good conductivity. Copper excels in conductivity, second only to silver, ranking second among all metals. It ensures fast and good power transmission and is also ideal in processing, being both strong and flexible, allowing for easy stretching and bending without breaking. The metal spring 20 is made of beryllium copper, which has high strength and hardness, and can withstand greater pressure and impact. It is suitable for manufacturing parts requiring high mechanical properties, such as springs. It has high surface hardness and good wear resistance, which can extend the service life of parts. Therefore, the beryllium copper metal spring 20 has good elasticity, a long service life, and is not prone to fatigue. The protective frame 30 is made of stainless steel, which is easy to process and has a low cost. It forms a precise and controllable rectangular frame with the terminal body 10.

[0040] Next, we will introduce the fabrication process of the high-current rectangular terminal in this embodiment:

[0041] like Figure 3 As shown, the terminal body 10 semi-finished product (first stage) is first processed (e.g., punched). At this time, the upper side plate 112 and the lower side plate 122 are located on the same plane, and they are also located on the same plane as the upper stacked portion 111 and the lower stacked portion 121. The punched through hole of the upper stacked portion 111 (or the lower stacked portion 121) has been formed.

[0042] like Figure 4As shown, the upper side plate 112 is then bent upwards relative to the plane, while the lower side plate 122 is bent downwards relative to the plane. The positioning protrusions (specifically, the corresponding first positioning protrusion 1 and second positioning protrusion 2 mentioned above) on the upper side plate 112, lower side plate 122, and lower stacked portion 121 (or upper stacked portion 111) are then stamped. Figure 5 As shown, the two spring pieces 20 are then installed on the upper side plate 112 and the lower side plate 122 respectively; then, the upper stacking part 111 is bent upwards until it is stacked on the lower stacking part 121, and the first positioning protrusion 1 is inserted into the first positioning hole, as shown. Figure 2 As shown; then the protective frame 30 is inserted from the front end of the upper side plate 112 and the lower side plate 122. The protective frame 30 is usually made of stainless steel sheet by punching. It is first pre-folded into a U-shape and then fitted onto the terminal body 10. Then the upper buckle plate 31 and the lower buckle plate 33 of the protective frame 30 are riveted so that the upper buckle plate 31 is fastened to the upper side plate 112 and the lower buckle plate 33 is fastened to the lower side plate 122. Thus, the installation of the high current rectangular terminal is completed.

[0043] After the first positioning protrusion 1 is inserted into the first positioning hole, the protruding end of the first positioning protrusion 1 can be riveted or welded. Similarly, after the second positioning protrusion 2 is inserted into the second positioning hole of the spring piece 20, the protruding end of the second positioning protrusion 2 can be riveted or welded.

[0044] like Figure 7 As shown, the manufactured high-current rectangular terminal has bent portions connecting its upper side plate 112 and lower side plate 122 to the front ends of the corresponding upper stacked portions 111 and lower stacked portions 121. This causes the upper side plate 112 and lower side plate 122 to be misaligned with the corresponding upper stacked portions 111 and lower stacked portions 121 in the vertical direction. This avoids negative impacts on the positioning and connection accuracy of the upper stacked portions 111 and lower stacked portions 121. Meanwhile, the rectangular frame is mainly provided by the bent portion of the lower side plate 122, which makes it easy to control the size. Furthermore, the positioning effect of the bent portion A1 of the stacked upper side plate 112 and the bent portion A2 of the lower side plate 122 is better by matching the curvature of the two, which makes it easier to control the relative position and size of the rear ends of the upper side plate 112 and the lower side plate 122. The front ends of the upper side plate 112 and the lower side plate 122 are corrected and maintained by the protective frame 30, thereby simply and effectively controlling the size of the rectangular frame.

[0045] The key design feature of this invention lies in its use of a terminal body 10, a metal spring 20, and a protective frame 30 to form a high-current rectangular terminal. The terminal body 10 has a simple structure, reducing the difficulty of bending. Combined with the protective frame 30, the front baffle 32 of the protective frame 30 is positioned at the front end of the upper side plate 112 and the lower side plate 122 to cover the front opening of the insertion cavity. The upper buckle 31 is fastened to the top of the upper side plate 112, and the lower buckle 33 is fastened to the bottom of the lower side plate 122, thus forming the frame of the rectangular insertion cavity. The protective frame 30 is a component independent of the terminal body 10 and is manufactured separately. Its structure is also simple and easy to manufacture. This helps to reduce the overall production cost of the high-current rectangular terminal and allows for flexible design of the terminal body 10 size to better meet the high-current requirements.

[0046] Moreover, the terminal body 10, metal spring 20, and protective frame 30 can be flexibly selected in terms of materials, focusing on their respective functions, while taking into account the high current terminal's performance and production costs.

[0047] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A high-current rectangular terminal, characterized in that, Including: The terminal body includes an upper metal plate and a lower metal plate; the upper metal plate includes an upper stacked portion and an upper side plate integrally connected to the front end of the upper stacked portion, and the lower metal plate includes a lower stacked portion and a lower side plate integrally connected to the front end of the lower stacked portion. The upper stacked portion and the lower stacked portion are stacked and fixed, and their left or right edges are connected as one piece by a bending portion. The upper side plate is spaced above the lower side plate so that a rectangular insertion cavity is formed between the two. A metal spring is installed on the bottom surface of the upper side plate or the top surface of the lower side plate. The metal spring has an elastic contact protrusion that protrudes toward the insertion cavity in the vertical direction. The protective frame includes an upper buckle plate, a lower buckle plate, and a front baffle integrally connected between the front ends of the upper buckle plate and the lower buckle plate; the front baffle is located at the front end of the upper side plate and the lower side plate to cover the front opening of the insertion cavity, the upper buckle plate is fastened to the top of the upper side plate, and the lower buckle plate is fastened to the bottom of the lower side plate.

2. A high-current rectangular terminal according to claim 1, characterized in that, On the overlapping surfaces of the upper and lower overlapping portions, one has a first positioning hole and the other has a first positioning protrusion. After the upper and lower overlapping portions are stacked and fixed, the first positioning protrusion is embedded in the corresponding first positioning hole.

3. A high-current rectangular terminal according to claim 2, characterized in that, The first positioning protrusion is formed by punching and deforming on the back side, and the first positioning hole is a punched through hole.

4. A high-current rectangular terminal according to claim 1, characterized in that, The metal spring is provided with a second positioning hole. Correspondingly, a second positioning protrusion is provided on the bottom surface of the upper side plate or the top surface of the lower side plate facing the insertion cavity. The second positioning protrusion is embedded in the corresponding second positioning hole.

5. A high-current rectangular terminal according to claim 4, characterized in that, Two metal springs are provided. One metal spring is installed on the bottom surface of the upper side plate, and the other metal spring is installed on the top surface of the lower side plate. A second positioning protrusion is provided on the bottom surface of the upper side plate and the top surface of the lower side plate, facing the insertion cavity. A stamped blind hole corresponding to the second positioning protrusion is formed on the top surface of the upper side plate and the bottom surface of the lower side plate.

6. A high-current rectangular terminal according to claim 1, characterized in that, The left and / or right edges of the upper buckle are bent downward along the corresponding left and / or right edges of the upper side plate and riveted to the bottom of the upper side plate. And / or: The left and / or right edges of the lower buckle plate are bent upward along the corresponding left and / or right edges of the lower side plate and riveted to the top of the lower side plate.

7. A high-current rectangular terminal according to claim 1, characterized in that, The top of the upper buckle is bent to form an upwardly extending upper protective metal spring, and the bottom of the lower buckle is bent to form a downwardly extending lower protective metal spring.

8. A high-current rectangular terminal according to claim 1 or 7, characterized in that, The top of the upper buckle plate is bent upward to form an upper support flap, and the bottom of the lower buckle plate is bent downward to form a lower support flap.

9. A high-current rectangular terminal according to claim 1, characterized in that, The terminal body is made of copper, the metal spring is made of beryllium copper, and the protective frame is made of stainless steel.

10. A high-current rectangular terminal according to claim 1, characterized in that, The terminal body is rectangular when viewed from above, and the upper and lower stacked portions are stacked and fixed together to form a rectangle.

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