Molding type large-current split slot terminal

Abstract

The utility model discloses a forming type large-current split slot terminal. The forming type large-current split slot terminal comprises a connecting part, a fixing part, an elastic part and a plurality of contact parts which are integrally formed and connected in sequence, the elastic part comprises a plurality of elastic sheet strips, the rear end of each elastic sheet strip is integrally connected with the fixing part, a first through groove is formed between every two adjacent elastic sheet strips, each first through groove is formed by extrusion of an extrusion punch, and each first through groove is communicated with the insertion cavity; the first through groove and the second through groove are formed through extrusion of the extrusion punch, so that the elastic part and the contact parts are formed, contact points can be effectively increased, contact resistance is reduced, abrasion is uniform, the service life is longer, meanwhile, burrs and other phenomena do not exist in manufacturing and extrusion forming, a structure can be designed to avoid burrs, and the production efficiency is improved. And meanwhile, transition angles in various shapes such as fillets can be designed, the scraping risk is avoided, the material utilization rate is higher in the manufacturing process of the product structure, efficiency is greatly improved, and the ideal function effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technology of terminal production and manufacturing field, in particular to a molded large current splitting slot terminal. Background Art

[0002] A high-current connector is a power connector that has been widely used in various power transmission systems, such as power distribution systems or power supply systems, as a power connection interface. In a power supply system, the waterproof, anti-loosening and anti-vibration functions of the power connector are very important, especially for a moving power supply system. At present, automotive high-current connectors are required to have a compact structure, small size, easy operation, vibration resistance, safe and reliable electrical connection, and 360° shielding. High-current connectors have the ability to withstand high voltage and high current to ensure their long-term safe operation and avoid fire accidents caused by discharge.

[0003] The high-current terminal is an important component of the high-current connection. Its specific structure includes a connecting part, a fixing part, an elastic part and multiple contact parts which are integrally formed and connected in sequence; the elastic part includes multiple spring strips, which extend forward and backward, and the multiple spring strips are arranged in a circular interval and surround to form an insertion cavity, and the rear end of each spring strip is integrally connected with the fixing part.

[0004] In the prior art, high-current terminals of this structure are mainly completed by turning processing combined with saw blade grooving. The smoothness of the inner hole during turning is average, and the circular lines produced by turning hinder the plug-in effect. The saw blade grooving will inevitably cause burrs on the inner and outer parts, which require post-processing. The saw blade wear will produce stubborn burrs that cannot be removed, and the round hole grooving will produce sharp corners even without burrs. These sharp corners will eventually contact the plug-in pins, directly wearing the pins with sharp corners, causing the surface state of the pins to drop sharply, and the contact function to decline or even be lost. In addition, after turning and saw blade grooving, burrs need to be removed, the material utilization rate is low, the single process time is long, the machining cost is too high, and the yield rate is also very low. Therefore, it is necessary to improve the current high-current terminals. Utility Model Content

[0005] In view of this, the present invention aims to overcome the deficiencies in the prior art, and its main purpose is to provide a molded high-current split-slot terminal, which can effectively solve the problems of high cost and low yield of the existing high-current terminals.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A molded large current splitting slot terminal comprises a connecting portion, a fixing portion, an elastic portion and a plurality of contact portions which are integrally formed and connected in sequence; the elastic portion comprises a plurality of spring strips which extend forward and backward, are arranged at intervals in a circumferential circle and surround an insertion cavity, the rear end of each spring strip is integrally connected with the fixing portion, a first through slot is formed between two adjacent spring strips, each first through slot is extruded and formed by an extrusion punch, and each first through slot is connected to the insertion cavity; the plurality of contact portions extend backward and integrally in the opposite direction to the front ends of the plurality of spring strips and are suspended in the insertion cavity, a second through slot is formed between two adjacent contact portions, each second through slot is also extruded and formed by an extrusion punch, and each second through slot is connected to the insertion cavity.

[0008] As a preferred solution, the rear end of the elastic portion is concave outwardly and convex inwardly, and an annular groove is formed on the outer wall.

[0009] As a preferred solution, the front end outer wall of the elastic portion is provided with an annular recess, and a fixing ring is embedded in the annular recess.

[0010] As a preferred solution, the fixing ring is formed with an offset opening.

[0011] As a preferred solution, all corners of the contact portion are rounded.

[0012] As a preferred solution, the connecting portion is a wire crimping barrel.

[0013] As a preferred solution, the connecting portion has an ultrasonic welding area.

[0014] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0015] By utilizing an extrusion punch to extrude and form the first through groove and the second through groove, thereby forming an elastic portion and a plurality of contact portions, the contact points can be effectively increased, the contact resistance can be reduced, the wear can be uniform and the service life can be longer. At the same time, the extrusion molding can be performed without burrs and the like, and the structure can be designed to avoid the generation of burrs. At the same time, various shapes of transition angles such as fillets can be designed to avoid the risk of scratches. The product structure has a higher material utilization rate during the manufacturing process, the efficiency is greatly improved, and the functional effect is close to the ideal.

[0016] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the first preferred embodiment of the utility model;

[0018] Figure 2This is a front view of the first preferred embodiment of the utility model;

[0019] Figure 3 This is a front view of the extrusion punch in the first preferred embodiment of the utility model

[0020] Figure 4 It is a three-dimensional schematic diagram of the second preferred embodiment of the utility model;

[0021] Figure 5 It is a three-dimensional schematic diagram of a fixing ring in the second preferred embodiment of the utility model.

[0022] Description of the accompanying drawings:

[0023] 10. Connecting part 11. Ultrasonic welding area

[0024] 20. Fixing portion 21. Annular groove

[0025] 22. convex ring 30. elastic part

[0026] 31. Shrapnel strip 32. Fixing ring

[0027] 321, dislocation opening 301, insertion cavity

[0028] 302, first through groove 303, annular groove

[0029] 304, annular recess 40, contact portion

[0030] 41. Second through slot 50. Extrusion punch

[0031] 51. Body 52. ​​Punching knife

[0032] 60. Plug in the pin. DETAILED DESCRIPTION

[0033] Please refer to Figures 1 to 3 As shown, it shows the specific structure of a molded high current splitting slot terminal of the first preferred embodiment of the utility model, including a connecting portion 10, a fixing portion 20, an elastic portion 30 and a plurality of contact portions 40 which are integrally molded and connected in sequence.

[0034] The connecting part 10 is a wire crimping barrel, which is crimped and connected with the external connecting wire, and the connecting part 10 is a cylindrical barrel. The fixing part 20 is used for fixing and installing with the insulating seat of the connector, and the fixing part 20 is concavely provided with an annular groove 21 and a convex ring 22, and the convex ring 22 is located at the rear side of the annular groove 21, and is more firmly combined with the insulating seat of the connector.

[0035] The elastic part 30 includes a plurality of spring strips 31, which extend forward and backward, are arranged at intervals in a circumference and surround an insertion cavity 301, and the rear end of each spring strip 31 is integrally connected with the fixing part 20, and a first through groove 302 is formed between two adjacent spring strips 31, and each first through groove 302 is extruded by an extrusion punch 50, and each first through groove 302 is connected to the insertion cavity 301. In this embodiment, there are ten spring strips 31 arranged at equal intervals, and the rear end of the elastic part 30 is concave outside and convex inside, and an annular groove 303 is formed on the outer wall.

[0036] The plurality of contact portions 40 are integrally extended backward from the front ends of the plurality of spring strips 31 and suspended in the insertion cavity 301. A second through slot 41 is formed between two adjacent contact portions 40. Each second through slot 41 is also extruded by an extrusion punch 50. Each second through slot 41 is connected to the insertion cavity 301. In this embodiment, each corner of the contact portion 40 is rounded.

[0037] like Figure 3 As shown, the extrusion punch 50 includes a main body 51, and a plurality of punch knives 52 are integrally extended radially outward from the front end of the main body 51. The plurality of punch knives 52 are evenly arranged at intervals around the circumference, and each punch knives 52 is used for extruding and forming a corresponding second through groove 41 and a corresponding first through groove 302.

[0038] The utility model also discloses a manufacturing process of the aforementioned molded high current splitting slot terminal, comprising the following steps:

[0039] (1) First, the main structure of the molded high current splitting slot terminal is formed.

[0040] (2) The main structure of the molded high current splitting slot terminal is placed in a mold, and the second through slots 41 and the first through slots 302 are extruded and formed by an extrusion punch 50 to form the elastic portion 30 and the plurality of contact portions 40 .

[0041] When in use, the insertion pin 60 is inserted into the insertion cavity 301 from front to back until it contacts each contact portion 40 .

[0042] Please refer to Figures 4 to 5 As shown, it shows the specific structure of a molded large current splitting slot terminal of the second preferred embodiment of the utility model. The specific structure of this embodiment is basically the same as the specific structure of the first preferred embodiment mentioned above, and the difference is:

[0043] In this embodiment, the connecting portion 10 has an ultrasonic welding area 11 for ultrasonic welding with an external circuit. Also, the front end outer wall of the elastic portion 30 is provided with an annular recess 304, in which a fixing ring 32 is embedded to prevent excessive deformation of each spring strip 31, and an offset opening 321 is formed on the fixing ring 32 to enable the fixing ring 32 to have the function of elastic deformation.

[0044] The design focus of the utility model is: by utilizing an extrusion punch to extrude and form a first through groove and a second through groove, thereby forming an elastic portion and a plurality of contact portions, the contact points can be effectively increased, the contact resistance can be reduced, the wear is even and the service life is longer, and at the same time, the extrusion molding is free of burrs and the like, and the structure can be designed to avoid the generation of burrs. At the same time, transition angles of various shapes such as rounded corners can be designed to avoid the risk of scratches. The product structure has a higher material utilization rate in the manufacturing process, the efficiency is greatly improved, and the functional effect is close to the ideal.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A molded high current splitting slot terminal, comprising a connecting portion, a fixing portion, an elastic portion and a plurality of contact portions which are integrally formed and connected in sequence; the elastic portion comprises a plurality of spring strips, the plurality of spring strips extend forward and backward, the plurality of spring strips are arranged in a circumferential interval and surround an insertion cavity, the rear end of each spring strip is integrally formed and connected with the fixing portion, a first through slot is formed between two adjacent spring strips, characterized in that: Each first through groove is extruded by an extrusion punch, and each first through groove is connected to the insertion cavity; the multiple contact parts extend backward in the opposite direction from the front ends of the multiple spring strips and are suspended in the insertion cavity, and a second through groove is formed between two adjacent contact parts, and each second through groove is also extruded by an extrusion punch, and each second through groove is connected to the insertion cavity.

2. The molded high current splitting slot terminal according to claim 1, characterized in that: The rear end of the elastic part is concave outward and convex inward, and an annular groove is formed on the outer wall.

3. The molded high current splitting slot terminal according to claim 1, characterized in that: An annular recess is formed on the front outer wall of the elastic part, and a fixing ring is embedded in the annular recess.

4. The molded high current splitting slot terminal according to claim 3, characterized in that: The fixing ring is formed with an offset opening.

5. The molded high current splitting slot terminal according to claim 1, characterized in that: Each corner of the contact portion is rounded.

6. The molded high current splitting slot terminal according to claim 1, characterized in that: The connecting portion is a wire crimping barrel.

7. The molded high current splitting slot terminal according to claim 1, characterized in that: The connecting portion is provided with an ultrasonic welding area.

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