CN-224204399-U - Spring plate structure for connector

Abstract

The utility model provides a spring plate structure for a connector, which comprises a metal sheet-shaped substrate, wherein the substrate is provided with a first bending part, a second bending part, a third bending part, a fourth bending part and a fifth bending part which are sequentially arranged along the length direction, the first bending part is bent to form a semicircle, a stress buffer hole is arranged at the semicircular part of the first bending part, an arc-shaped contact bump is arranged at the tail end of the fifth bending part, a guide channel with an opening gradually reduced from outside to inside is formed between the fifth bending part and the substrate, the fifth bending part forms a guide inclined plane, and the fifth bending part is used for elastic plug-in connection with an external connector. The utility model solves the problems of concentrated stress, unstable contact, easy deformation, unstable installation and the like of the traditional spring plate structure, realizes the combination of high reliability, long service life and low cost manufacture, and is suitable for the field of precise electronic connectors.

Inventors

• TANG SHAOPING
• WEI WU
• LUO XUHUA

Assignees

• 深圳市西格益电子有限公司

Dates

Publication Date

20260505

Application Date

20250521

Claims (9)

1. 1. A spring structure for a connector, comprising: a metal sheet-like substrate; The substrate is provided with a first bending part, a second bending part, a third bending part, a fourth bending part and a fifth bending part which are sequentially arranged along the length direction; The first bending part is bent to form a semicircle, a stress buffer hole is arranged at the semicircular part of the first bending part, and an arc-shaped contact salient point is arranged at the tail end of the fifth bending part; A guide channel which is gradually reduced from outside to inside is formed between the fifth bending part and the base body, and the fifth bending part forms a guide inclined plane; the fifth bending part is used for being elastically spliced with the external connector.
2. 2. The spring structure according to claim 1, wherein: The stress buffer hole is in a waist-shaped hole structure.
3. 3. The spring structure according to claim 1, wherein: the two sides of the middle part of the base body are provided with first flanging reinforcing structures upwards along the thickness direction of the base body; the first flanging reinforcing structure is further provided with a first barb structure towards the middle direction; the fifth bend extends below the first barb structure.
4. 4. A dome structure according to claim 3, characterized in that: The base body is also provided with two first round holes, and the diameter of each first round hole is 1/3-1/2 of the width of the base body; The two sides of the base body are downwards provided with second flanging reinforcing structures; the second flanging reinforcing structure is used for fixing the elastic sheet structure on the PCB.
5. 5. The spring structure of claim 4, wherein: the tail ends of the first flanging reinforcing structure and the second flanging reinforcing structure are provided with chamfers.
6. 6. The spring structure according to claim 1, wherein: The substrate and the first bending part, the second bending part, the third bending part, the fourth bending part and the fifth bending part thereof are made of beryllium copper alloy materials, the thickness of the substrate is 0.15-0.25mm, and the surface is plated with a gold-nickel composite plating layer with the thickness of 0.003-0.005 mm.
7. 7. The spring structure according to claim 1, wherein: The outer sides of the second bending part and the third bending part are provided with wavy reinforcing ribs, and the height of the protrusions of the reinforcing ribs along the thickness direction of the substrate is 1/4-1/3 of the thickness of the substrate.
8. 8. The spring structure according to claim 1, wherein: The third bending portion is provided with two first bending tabs.
9. 9. The spring structure according to claim 1, wherein: The whole elastic sheet structure is of an arc-shaped structure similar to a shoe shape.

Description

Spring plate structure for connector Technical Field The utility model relates to the technical field of connectors, in particular to a spring plate structure for a connector. Background In the field of electronic connectors, a spring structure is one of the key components for realizing electrical connection, and the spring is generally required to have good elasticity, electrical conductivity and mechanical stability, so as to ensure that the connector can reliably connect a circuit board with other electronic components in a long-term use process. The traditional spring plate structure adopts a simple metal sheet design, and realizes the plugging function with an external connector through certain bending and forming. However, as electronic devices are miniaturized and have higher performance, performance requirements for the connector spring are increasing. The spring plate structure in the connector is used as a key conductive and elastic contact part, and the performance of the spring plate structure directly influences the reliability and durability of connection; the existing spring plate structure has the following defects: 1. Stress concentration is easy to cause fatigue fracture, namely stress distribution at the bending part of the traditional elastic sheet is uneven, and particularly after multiple plugging and unplugging, the stress is concentrated in a local area (such as a bending root) and is easy to cause cracks or fractures. 2. The contact stability is poor, the contact end part lacks buffer design, and the contact resistance is easy to fluctuate due to vibration or deflection during plugging, so that the signal transmission reliability is affected. 3. The structural strength is insufficient, the common flanging or the plane reinforcing rib cannot effectively inhibit the lateral deformation of the elastic sheet when being stressed, so that the integral rigidity is insufficient, and the elastic sheet is easy to generate plastic deformation after long-term use. Accordingly, the prior art has shortcomings and needs further improvement. Disclosure of utility model Aiming at the problems existing in the prior art, the utility model provides a spring plate structure for a connector. In order to achieve the above object, the present utility model is specifically as follows: the utility model provides a spring plate structure for a connector, which comprises: a metal sheet-like substrate; The substrate is provided with a first bending part, a second bending part, a third bending part, a fourth bending part and a fifth bending part which are sequentially arranged along the length direction; The first bending part is bent to form a semicircle, a stress buffer hole is arranged at the semicircular part of the first bending part, and an arc-shaped contact salient point is arranged at the tail end of the fifth bending part; A guide channel which is gradually reduced from outside to inside is formed between the fifth bending part and the base body, and the fifth bending part forms a guide inclined plane; the fifth bending part is used for being elastically spliced with the external connector. Further, the stress buffer holes are in a waist-shaped hole structure. Further, the two sides of the middle part of the matrix are provided with first flanging reinforcing structures upwards along the thickness direction of the matrix; the first flanging reinforcing structure is further provided with a first barb structure towards the middle direction; the fifth bend extends below the first barb structure. Further, the base body is also provided with two first round holes, and the diameter of each first round hole is 1/3-1/2 of the width of the base body; The two sides of the base body are downwards provided with second flanging reinforcing structures; the second flanging reinforcing structure is used for fixing the elastic sheet structure on the PCB. Further, the ends of the first flanging reinforcing structure and the second flanging reinforcing structure are provided with chamfers. Further, the substrate and the first, second, third, fourth and fifth bending parts are made of beryllium copper alloy material, the thickness of the substrate is 0.15-0.25mm, and the surface is plated with a gold-nickel composite plating layer with the thickness of 0.003-0.005 mm. Further, wavy reinforcing ribs are arranged on the outer sides of the second bending part and the third bending part, and the height of the protrusions of the reinforcing ribs along the thickness direction of the substrate is 1/4-1/3 of the thickness of the substrate. Further, the third bending portion is provided with two first bending tabs. Further, the whole elastic sheet structure is of an arc-shaped structure similar to shoes. The technical scheme of the utility model has the following beneficial effects: 1. Remarkably improves the fatigue resistance: The semicircular design of the first bending part is combined with the waist-shaped stress buffer hole,