Key Technology of Toggle Switch

With the rapid development of modern information technology,toggle switchAs an important component of signal transmission and detection, it is more and more widely used in electronic and electrical fields, and puts forward higher requirements for the performance and reliability of button switches. Then, let's understand the key process technology of button switches!

One. Glasses processing

The movable contact piece is an important part of the toggle switch. The shape of the part is complex and irregular, the symmetry requirement is very high, the arc size at the contact is large, and the forming is difficult. The processing quality of the movable contact piece is the key to ensure the reliability and electrical performance of the switch. To this end, we compared and screened various process methods, formulated a reasonable process plan, and designed a multi-level assembly mold. In the process of making workpiece molds and blanking parts, the processing is carried out in strict accordance with the design documents and technical requirements, the cumulative deviation in the processing process is controlled, and the parts are tested after the processing is completed to meet the design requirements. Ensure the mechanical life and electrical performance of the toggle switch.

Design, Manufacture and Forming Technology of 2. Shell Mold

The toggle switch housing parts are injection molded. In addition to reasonably determining the parting, exhaust system and ejection system during mold design, the molding cavity is designed to be spliced to facilitate injection molding, taking into account the dimensional accuracy and processing operability of the parts. The mold feed gate is designed as a direct gate feed structure. When processing, the splicing cavity in the mold adopts slow motion and EDM to ensure the position accuracy of the formed parts without burrs. Injection molding process conditions: mold temperature 1305, injection pressure 60 ~ 130Mpa, holding time 30~120s. In the process of injection molding, the barrel temperature and feeding quantity are accurately controlled, and after many trial production, qualified products are produced.

Three. Guarantee of durability of toggle switch

　toggle switchIn order to ensure the durability of the switch, we must start from the following five aspects.

1. Reasonable design of movable contact piece, movable contact piece structure;

2. Reasonably control the gap between transmission mechanism and contact mechanism;

3. All contact surfaces are gold plated:

4. and the surface lubricant protective agent SP-90 immersion electrical contact;

5. Make a special assembly tool to correctly control the action position of the switch. After many tests, the durability meets the requirements stipulated in the contract.

Four. Solution of Thermal Effect of Toggle Switch in Work

In view of the thermal effect of the toggle switch, the following measures are adopted.

1. Copper material with good thermal conductivity is selected for the power-on parts, and the surface is plated with gold;

2. Shell and other insulation using thermal deformation coefficient of small PA46 plastic;

3. Strictly control the elasticity of the driving spring to ensure that the switch has a small contact resistance;

4. All contacts shall be dipped with arc-extinguishing grease and surface lubricating protective agent before assembly to cut off the arc of the switch;

5. Strictly control the machining accuracy of transmission parts.

The above introduction istoggle switchIf you need to know more, please feel free to contact us!