阅读说明：本技术 一种冲压成型的鱼眼端子 (Punch forming's fisheye terminal ) 是由 产起平 王凯锋 于 2020-12-10 设计创作，主要内容包括：本发明公开了一种冲压成型的鱼眼端子,包括主杆部以及设置于主杆部一端的一体成型插头部,所述主杆部的中部对称设置有两根反向弯曲的第一悬臂梁,所述第一悬臂梁之间设置有两段直梁,两段所述直梁的自由端相对且具有间隙。该鱼眼端子,通过设置两个反向弯曲第一悬臂梁,在安装到PCB板时,起到缓冲作用,避免DBC上的受力突变,导致陶瓷开裂；同时两段直梁结构,既能增加端子的整体强度,又能预防端子受力过大产生塑性变形,因此,本发明具有易制造,提高产品可靠性、提高生产效率、通过减少失效达到降低成本等优点。(The invention discloses a punch-formed fisheye terminal which comprises a main rod part and an integrally-formed plug part arranged at one end of the main rod part, wherein two reversely-bent first cantilever beams are symmetrically arranged in the middle of the main rod part, two sections of straight beams are arranged between the first cantilever beams, and the free ends of the two sections of straight beams are opposite and have a gap. The fisheye terminal has a buffering effect when being mounted on a PCB (printed circuit board) by arranging the two reversely bent first cantilever beams, so that ceramic cracking caused by sudden stress change on a DBC (direct bus connector) is avoided; meanwhile, the two sections of straight beam structures can increase the overall strength of the terminal and prevent the terminal from generating plastic deformation due to overlarge stress, so that the terminal has the advantages of easiness in manufacturing, improvement of product reliability, improvement of production efficiency, reduction of cost through reduction of failure and the like.)

1. The utility model provides a stamping forming's fisheye terminal which characterized in that: the plug part comprises a main rod part (1) and an integrally formed plug part (2) arranged at one end of the main rod part (1), wherein two reversely bent first cantilever beams (3) are symmetrically arranged in the middle of the main rod part (1), two sections of straight beams (4) are arranged between the first cantilever beams (3), and free ends of the two sections of straight beams (4) are opposite and have gaps.

2. The punch-formed fish-eye terminal as set forth in claim 1, wherein: the plug part (2) is composed of a bearing part (21) connected with the main rod part (1), two second cantilever beams (22) which are symmetrically arranged and reversely bent and end parts (23) which are fixedly arranged on the bearing part (21) and are arranged at the end parts of the two second cantilever beams (22), and after the plug part (2) is inserted into the PCB hole, the middle parts of the second cantilever beams (22) are pressed and contacted with the inner wall of the PCB hole.

3. The punch-formed fish-eye terminal as set forth in claim 2, wherein: transition fillets (5) are arranged on two sides of the joint of the bearing part (21) and the main rod part (1).

4. The punch-formed fish-eye terminal as set forth in claim 1, wherein: and a stressed support plate (6) is relatively and vertically arranged at the other end of the main rod part (1) far away from the plug part (2).

5. The punch-formed fish-eye terminal as set forth in claim 1, wherein: the clearance between the free ends of the two straight beams (4) is 0.1 mm.

Technical Field

The invention belongs to the technical field of connecting pieces, and particularly relates to a punch-formed fisheye terminal.

Background

With the rapid development and popularization of new energy automobiles, the requirements on an automobile electrical system are higher and higher, an electronic connector is a key component for power and signal transmission, and the performance of the whole electrical system is directly influenced by the quality of the connector, so that people pay more and more attention to the reliability of the electronic connector.

In the field of electronic connectors, fisheye terminals are more and more widely applied and have the characteristics of small insertion force, short process, vibration resistance, tolerance compensation, small damage to holes of printed circuit boards and the like. When the IGBT module is in practical use, one end of the IGBT module is connected with the PCB in a crimping mode, the other end of the IGBT module is welded on the DBC surface in the IGBT module in a reflow soldering mode, a circuit channel is formed, and signal transmission is achieved.

During practical use, the terminal is pressed and held between the DBC board and the PCB board, the elasticity of the terminal is small, sudden change of stress on the DBC board can occur in the pressing and holding process, ceramic cracking can be caused, and when the elasticity is enough, the situation that plastic deformation occurs due to overlarge deformation can also occur, so that a targeted improved design is needed.

Disclosure of Invention

The present invention is directed to solve the above problems of the related art by putting a fish-eye terminal into use.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a fish eye terminal of stamping forming, includes main pole portion and sets up in the integrated into one piece plug portion of main pole portion one end, the middle part symmetry of main pole portion is provided with two reverse crooked first cantilever beams, be provided with two sections straight roof beams between the first cantilever beam, two sections the free end of straight roof beam is relative and has the clearance.

Preferably, the plug portion is composed of a bearing portion connected with the main rod portion, two second cantilever beams which are symmetrically arranged and are reversely bent and end portions fixedly arranged at the ends of the two second cantilever beams, wherein the two second cantilever beams are fixedly arranged on the bearing portion, and after the plug portion is inserted into the PCB hole, the middle portion of each second cantilever beam is pressed against and contacts the inner wall of the PCB hole.

Preferably, two sides of the joint of the bearing part and the main rod part are provided with transition fillets.

Preferably, the other end of the main rod part, which is far away from the plug part, is relatively and vertically provided with a stressed support plate.

Preferably, the gap between the free ends of the two straight beams is 0.1 mm.

The invention has the technical effects and advantages that: the fisheye terminal formed by punching is provided with a plurality of through holes,

1. through the first cantilever beam of two reverse bendings of symmetry setting, take place elastic deformation towards crooked direction, provide the buffer power, avoid the atress sudden change on the DBC, lead to the condition of ceramic fracture.

2. Through setting up two straight roof beams that are interrupted, when the free end of two straight roof beams supported and pressed together to prevent first cantilever beam and continue deformation, the too big plastic deformation that produces of prevention terminal atress, thereby under the condition of proof strength, avoided deformation damage, simple structure, easy manufacturing improves product reliability, improves production efficiency, reaches advantages such as reduce cost through reducing the inefficacy.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

In the figure: 1. a main rod portion; 2. a plug portion; 21. a receiving part; 22. a second cantilever beam; 23. an end portion;

3. a first cantilever beam; 4. a straight beam; 5. transition fillets; 6. and (4) a stressed support plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a punch-formed fisheye terminal as shown in figure 1, which comprises a main rod part 1 and an integrally-formed plug part 2 arranged at one end of the main rod part 1, wherein two reversely-bent first cantilever beams 3 are symmetrically arranged at the middle part of the main rod part 1, two sections of straight beams 4 are arranged between the first cantilever beams 3, and the free ends of the two sections of straight beams 4 are opposite and have gaps.

After the end part of the fisheye terminal is welded on a DBC board, a plug part 2 is vertically upward, a hole of the PCB board is aligned with the plug part 2 and pressed in, in the pressing-in process, a main rod part 1 is stressed, and two reversely bent first cantilever beams 3 symmetrically arranged in the middle of the main rod part 1 elastically deform towards the bending direction to provide buffering force and avoid the condition that ceramic cracks due to sudden stress change on the DBC;

meanwhile, after the two first cantilever beams 3 are elastically deformed, the opposite ends of the two straight beams 4 between the two first cantilever beams 3 are close to each other, when the free ends of the two straight beams 4 are abutted to each other, the first cantilever beams 3 are prevented from continuing to deform, the terminal is prevented from being subjected to overlarge stress to generate plastic deformation, and therefore deformation and damage are avoided under the condition of ensuring the strength.

Plug portion 2 is by the portion of accepting 21 of being connected with mobile jib portion 1, set up and be provided with two symmetry settings and the second cantilever beam 22 of reverse bend and the end portion 23 of fixed setting and two second cantilever beam 22 tip on the portion of accepting 21 and constitute, after plug portion 2 inserted the PCB hole, the middle part of second cantilever beam 22 supported the inner wall in press contact PCB hole, and portion of accepting 21 and end portion 23 set up the PCB board both sides respectively, the terminal can have a better holding power, guarantee the contact strength of terminal and PCB board.

Transition fillets 5 are arranged on two sides of the joint of the bearing part 21 and the main rod part 1. The width of the part is increased, and the structural strength of the cantilever beam at the upper end is enhanced.

And a stressed support plate 6 is relatively and vertically arranged at the other end of the main rod part 1 far away from the plug part 2. The terminal is convenient to extrude and bear force, and the whole terminal is prevented from shifting after being pressed.

The clearance between the free ends of the two straight beams 4 is 0.1 mm. Further limiting the gap between the straight beams 4 and enhancing the practicability.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.