Quality (quality) requirements for battery contact pin connectors.vintage thimbles price

　　Although we deal with quality every day, it is never easy to define exactly what quality is. ISO9000 defines quality as follows: the degree to which a set of inherent characteristics meets the requirements. Everyone has different understanding of this definition. Here, we will discuss what is quality or what is quality in conjunction with the connector industry.

　　As an example, a battery contact pin connector factory is holding a quality meeting, and the topic is "improving quality." Business supervisors and product development supervisors believe that improving quality and product performance will definitely increase costs; while quality supervisors and production supervisors believe that improving quality and increasing product qualification rates will definitely reduce costs. There is no way for everyone to agree. The meeting ended because it failed to reach a consensus. In fact, the root of the problem lies in everyone's different understanding of the concept of quality. In the connector industry, quality (quality) has at least three meanings:

　　1. The design quality (quality) of the battery contact pin connector, that is, the degree to which the design of the battery contact pin connector can reach the design goal. However, the establishment of design goals is not an easy process. There is also a quality problem of design goals. Accurate design goals (or good quality design goals) require strong support from customers and try their best to participate. Suppliers and customers communicate repeatedly with each other. Fully reach a consensus, clearly and clearly express the design goals, and the understanding of the design goals is completely consistent. Otherwise, even if other customer-related work is done perfectly, the customer will not be satisfied. This is the first step in the quality management process, and it is also premise. We may have this experience: the customer has no complaints about the product, but is not satisfied. The reason is that although the product meets the requirements of the design goal, and the design goal is also recognized by the customer, the design goal does not achieve the product function well. Therefore, the customer has no complaints, but is not satisfied with the function of the product. For example, a customer requires the development of a connector. One of the design goals is that the RF leakage is not greater than -60dB. The test results of the designed battery contact pin connector also show that the requirements of the design goal are met, but the customer found that even after mass production Less than -60dB leakage of the connector still has a significant impact on a surrounding component. Although the customer has no complaints, they are not satisfied with the connector. It is now assumed that the design goal has been fully agreed. One of the requirements of the design goal is that the battery contact pin connector has a plug-in life of not less than 10,000 times and a pull-out force of not less than 200 grams. According to the customer’s request, the battery contact pin connector design engineer used C5240 to design a required shrapnel. According to the analysis, the stress of the shrapnel in working condition reached 900MPa. The reasonable design requirement is to use C5240 with SH hardness. With insufficient experience, I chose C5240 with H hardness. As a result, after 8000 times of life of the sample, the pull-out force was less than 200 grams, and the battery contact pin connector shrapnel did not meet the design target requirements. This situation is that the design of the battery contact pin connector fails to reach the design goal, and it is a problem with the design quality of the battery contact pin connector. For another example, the customer's requirements for a certain battery contact pin connector are: a life of 5 years and a contact resistance of 10mOhm (maximum). The supplier's corresponding design plan is 80 grams of positive force and 2 microns of silver plating. When the customer did the incoming inspection, the product could reach the contact resistance of 20mOhm (maximum). After 3 years, the customer noticed that the battery contact connector had poor contact, and the contact resistance was checked and some battery contact connectors were found to be in contact. The resistance is greater than 200mOhm! The supplier afterwards looked up the electroplating design standard of the battery contact pin connector and found that the positive force must be greater than 200 grams to ensure that the contact resistance is less than 10mOhm, and the internal test data also confirmed the theory. The design scheme cannot meet the requirements of the corresponding design goals. This is also an example of the battery contact pin connector design failing to meet the design goals.

　　Second, the quality (quality) of the design specifications of the battery contact pin connector, that is, the design parameters (specifications) of the battery contact pin connector can reach the design intent, or the design expression can reach the design intent. Suppose the designer of a battery contact pin connector intends to design a 6pin connector with a pitch of 8 and a pitch tolerance within 0.15.

　　This marking method allows the tolerance between the pins at both ends (the first pin and the last pin) to accumulate: 0.15 X 5=0.75, which violates the design intent and may cause the battery contact pin connector to fail to match. In fact, we have many cases of poor quality of battery contact pin connector design specifications, and many drawings with incomplete design information. For example, we often encounter terminal diagrams of connectors that do not mark plating test points, plating hardness, and plating color. Therefore, one of the design principles is that the design drawings, specifications, and standard interpretations are unique. If there is ambiguity, your design intent will inevitably compromise, or even withdraw from south to north. This is why there are various drawing standards. Even if there are various drawing standards, there are differences between the standards, and even completely different. For example, China, Europe, and the former Soviet Union use the first-angle projection method while the United States, Japan, and Taiwan use the third-angle projection method. The top, bottom, left, and right views of the first corner method are the bottom, top, right, and left views of the third corner method, and the product structure expressed is quite different.

　　Third, the production quality (quality) of the battery contact pin connector, or the manufacturing level of the connector, that is, the battery contact pin connector can meet the design specifications. This is the meaning of the quality of our more common connectors. If the length marked on the drawing of a connector shell is 10+/-0.1, and the produced length is 10.12, the size is unqualified; for example, the drawing of the connector terminal requires electroplating gold 0.76um thick, and the electroplated terminal is actually electroplated If the thickness is 0.86um, the electroplating meets the specification requirements; if the tensile strength of the purchased beryllium copper strip C172000 TM06 is less than 1000MPa, it is bad because of the relevant standards。The tensile strength of beryllium copper tape of this specification is required to be higher than 1070Mpa (see ASTM B 194)

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