1. Functions of Electric Tool SwitchesThe switch of an electric tool is a critical component in tool operation. It not only controls the power on/off function but also directly affects operational safety and convenience. The design and performance of the switch are closely related to the overall user experience. A well-designed switch provides better tactile feedback and responsiveness. In addition, the response speed and stability of the switch influence operational accuracy, especially in complex working environments where operators have higher requirements for reliable switching and restart performance.2. Impact of Switches on Battery PerformanceThere is a very close relationship between electric tool switches and batteries. The switch must be designed to withstand specific current and voltage levels while ensuring that frequent on/off operations do not impose excessive stress on the battery. In battery-powered tools, the switching frequency directly affects battery endurance and performance. For example, a properly designed switch can effectively reduce inrush current during startup, minimizing sudden current surges and reducing battery load, thereby extending battery service life.The contact quality and stability of the switch also influence battery discharge efficiency, which in turn affects the overall performance of the tool.3. Future Development TrendsWith continuous advancements in electric tool technology, the relationship between switches and batteries is also evolving. In the future, automation and integration of switch functions will become a major trend. For instance, intelligent switches integrated with battery status monitoring can provide real-time feedback on battery usage, enabling operators to better manage tool operation and battery charging. Meanwhile, more efficient switch designs will help reduce power losses and improve overall battery efficiency. These innovations will further drive the development of electric tools, enhancing both work efficiency and user safety.
Importance of Mechanical DesignThe mechanical design of a micro switch is a key factor that determines its performance and durability. A micro switch typically consists of multiple components, including springs, contacts, and a housing. The materials and structural design of these components directly affect the operating feel and reliability of the switch. During the design process, the selection of appropriate materials is particularly critical, especially in applications involving high loads and high switching frequencies, where material rigidity and elasticity must withstand long-term mechanical fatigue. To ensure stability and safety under extreme conditions, engineers commonly select materials with high resistance to temperature, voltage, and corrosion.The structural design of a micro switch should also take into account the fit and coordination between individual components. Proper clearances and connection methods can reduce wear and help maintain stable electrical performance over long-term operation. Through design optimization, micro switches can achieve smaller size and lighter weight without compromising functionality, thereby meeting modern equipment requirements for miniaturization and high reliability.Methods for Durability AnalysisDurability analysis of micro switches typically involves a range of tests and evaluations. Static and dynamic fatigue tests are conducted to assess the mechanical performance of the switch during long-term use. These tests simulate real operating conditions to evaluate stability and consistency under frequent actuation. The results help design teams identify potential design weaknesses at an early stage and implement necessary improvements.Environmental testing is also a crucial part of durability analysis. Such tests include simulations of extreme conditions such as high and low temperatures, humidity, and dust exposure, aiming to evaluate the operational performance and service life of micro switches under adverse environments. This approach ensures that micro switches maintain efficient and reliable operation across various application scenarios and meet user expectations for product stability.Comprehensive Consideration from Design to ReliabilityThe mechanical design and durability analysis of micro switches is not an isolated task but a comprehensive, multidisciplinary process. During the design phase, factors such as materials, structure, and operating environment must be considered holistically to ensure overall switch performance. Achieving long service life requires thorough analysis at an early stage to minimize the need for frequent maintenance and replacement, thereby enhancing end-user satisfaction.In this process, rapid product development and a well-established quality control system are also indispensable. They ensure that the designed micro switches deliver consistent quality and performance once released to the market. The success of a micro switch relies not only on innovative engineering design but also on rigorously validated reliability testing, enabling it to maintain outstanding performance amid evolving market demands.
Basic Concepts of Cable ConnectionsThe cable connection method of an electric tool switch is of vital importance, as it directly affects the safety and performance of the tool. Cable connections serve not only as the bridge between the power supply and the tool, but also as the pathway for electrical signal transmission. Selecting an appropriate cable connection method ensures stable current flow while effectively preventing equipment failures and potential safety hazards for users. Specifically, cable connections should provide good electrical conductivity, insulation performance, and voltage resistance.Common Cable Connection MethodsThere are several main types of cable connection methods used in electric tools. The most common include threaded connections, plug-and-socket connections, and soldered connections.Threaded connections are simple and practical, making them suitable for applications that require frequent disassembly and secure fastening. Thread locking ensures a firm and reliable connection.Plug-and-socket connections are widely used in portable electric tools due to their convenience, allowing for easy plugging and unplugging and quick cable replacement by users.Soldered connections are typically used for fixed cables. While they provide strong and stable connections, they are not convenient for disassembly and are generally applied in situations where long-term connection stability is required.Selection and Application of Connection MethodsWhen selecting a cable connection method for an electric tool switch, factors such as the operating environment, the need for frequent disassembly, and electrical performance requirements should be taken into consideration. The cable type and connection method should be chosen based on the specific application scenario, such as construction sites or workshops. During installation, proper insulation treatment of the connections is essential to ensure safe operation and to prevent risks such as short circuits or electrical leakage. A clear understanding of basic cable connection concepts and common connection methods provides reliable assurance for the safe and stable operation of electric tools.
Recently, our company awarded commemorative medals to cornerstone employees who have completed 3, 5, and 10 years of service, in recognition of their years of dedication and contribution.The commemorative medal awarding ceremony began in 2021. Depending on the service period (3, 5, or 10 years), the medals feature pure gold and silver coins mounted on crystal bases. The front of the medal is engraved with the year and a wheat ear pattern, symbolizing the legacy of the cornerstone employees who have made significant contributions, as well as cooperation, prosperity, and eternity. The medals are highly valuable for collection and remembrance.These commemorative medals serve as a special tribute to the journey of each employee, acknowledging the efforts of many who have worked diligently, innovatively, and contributed to the high-quality development of Kejian Electronics. The initiative also plays a key role in enhancing employees' sense of honor, belonging, and cohesion. The company encourages new employees to carry forward the traditions and work ethic of their predecessors, accelerating the pace of progress. The company hopes that they will take pride in Kejian today, so that Kejian will take pride in them tomorrow.
Full of the vibrant colors of life's smoke and fire, leisurely observing the passage of time in all things.Life is about finding moments of peace amidst busyness, discovering little joys in the ordinary!This is dedicated to the 'Dongyunhe Camping Activity' held by Yueqing Kejian Electronics Co., Ltd. on October 28, 2022.
Under the long-term suppression of the COVID-19 pandemic, offline services have been significantly impacted, while the online digital industry has embraced development opportunities. Among them, the innovation, competition, and market prospects of digital technology are at an unprecedented level. Among many digital technologies, the "metaverse" stands out for its ability to attract investment.According to McKinsey's latest report, "Value Creation in the Virtual World," global interest in the metaverse's vertical sectors surged in 2022, with Web3 investment news and new NFT product lines being launched almost every week. By early July, over $120 billion had been invested in the metaverse, more than twice the $57 billion investment in 2021.This article will explore how the semiconductor industry can leverage the "metaverse" as a double-edged sword, focusing on technological innovation, industrial development, and application expansion.Is the end of AI AIoT, and the end of the internet the metaverse? The concept of the metaverse first appeared in 1992 in Neal Stephenson’s science fiction novel Snow Crash. The novel describes a virtual digital world "Metaverse" parallel to the real world, where people use VR devices to create avatars and live in the virtual world. This concept became popular in later novels and films.Even today, the metaverse lacks a unified and clear definition, but there are common elements that help understand this popular concept.The most widely accepted is Roblox’s "8 Essential Elements of the Metaverse": Identity, Friends, Immersion, Low Latency, Diversity, Ubiquity, Economic System, and Civilization. Roblox, the world’s largest multiplayer online creation platform, went public in the US on March 11, 2021, and is considered the "first stock of the metaverse."Facebook founder Mark Zuckerberg likens the metaverse to an internet that humans can “immerse themselves in” rather than just “watch and use” (UGC ecosystem), not just the next generation of the internet but the ultimate one. On October 28, 2021, Facebook changed its name to Meta, fully investing in the metaverse and sparking the "metaverse boom" among major tech giants, becoming the catalyst for the metaverse economy’s explosion.In the "2022 China Metaverse White Paper," the metaverse is defined as a digital world created by people using computers, parallel to the real world. It refines the "four core features of the metaverse" (Figure 1): Immersive experience, Virtual identity, Virtual economy, and Virtual social governance. This report, released in May 2022, is the most authoritative and comprehensive metaverse report in China.Although there are many valuable viewpoints in the global debate, it can be summarized that the future of the metaverse should encompass keywords like "virtual and real integration, immersive experience, ecological closed loop, natural interaction, parallel execution, and the Internet of Everything."Another hot topic is whether the metaverse is the future of the internet. The radicals believe that the metaverse is the next generation of mobile computing platforms (such as VR/AR/XR devices) that will create an entirely new internet ecosystem, with 5 billion users expected by 2030. Gradualists argue that the metaverse is not the next generation of the internet; it is a new application that will emerge once technology reaches a certain level and will be the largest application scenario in the third generation of the internet, following the PC and mobile internet.Interestingly, different countries and regions have different attitudes toward the metaverse, divided into radical and cautious factions. Countries like South Korea, Japan, and India are in the radical camp, while the U.S., Europe, and China are more cautious or wait-and-see.Attitudes Toward the Metaverse's Prospects in Different Countries The South Korean government reacted quickly to the metaverse, setting up a metaverse association and aiming to take a leading role in the industry. According to the five-year "Metaverse Seoul Basic Plan," the metaverse platform "Metaverse Seoul" is expected to be completed by the end of 2022.Japan aims to foster metaverse-related industries and build new national advantages. The Ministry of Economy, Trade, and Industry published a report in July 2021 defining the metaverse as "a virtual space where producers from various fields provide services and content to consumers."India is one of the top countries in the world for metaverse investment, with major tech companies like Reliance Industries, which launched "Jio Glass" for students and teachers to access 3D virtual classrooms.In contrast, developed countries like the U.S. remain cautious. The U.S. government has not yet released an official metaverse policy, with concerns over data security and monopolistic risks taking precedence. Europe is also highly cautious, with the EU focusing on regulations to gain a first-mover advantage in governance.China, on the other hand, has been more lenient with new technologies and is allowing space for the metaverse to grow. Currently, there is no official metaverse policy, although articles, such as one from the Central Commission for Discipline Inspection in December 2021, view the metaverse as a combination and upgrade of existing technologies, likening it to a "3D version of the internet."Strategies of Major Tech Companies Under varying national attitudes, global tech companies also show similar and divergent approaches toward the metaverse.The commonality is that tech giants are primarily focused on expanding capabilities in VR/AR hardware, 3D game engines, and content creation platforms. While the specific choices vary, the sub-sectors are quite similar with no major new applications emerging yet. The differences arise from the companies’ stances on the metaverse, with "radical" and "gradual" factions."Radical" companies include Roblox, Meta, Microsoft, Google, Nvidia, Baidu, NetEase, etc. These companies, mostly large American enterprises, are investing heavily in the metaverse, with some already launching metaverse-related products.For example, NetEase unveiled its next-gen internet technology architecture for the metaverse in December 2021, releasing its virtual human SDK "Youling" and immersive event system "Yaotai," showcasing their metaverse muscles. Similarly, Baidu launched "Xirang," an immersive virtual space parallel to the physical world, as part of its metaverse project initiated in December 2020."Gradual" companies like Tencent, ByteDance, and Alibaba have not officially announced major metaverse layouts but are quietly making moves in metaverse sub-sectors.Currently, Tencent is focusing on three main areas: underlying infrastructure, backend architecture, and content & scenarios. It is investing in Epic Games and Snap to establish a strong position in the VR/AR ecosystem. Alibaba has invested heavily in Sandbox and established a metaverse lab within Alibaba DAMO Academy to explore four layers of the metaverse: holographic construction, 3D simulation, virtual-real integration, and linking the virtual with the real. ByteDance, the parent company of TikTok, has also entered the metaverse through acquisitions, including purchasing VR headset maker Pico for 9 billion yuan.Analyzing the Metaverse Industry Chain From a technological evolution perspective, the metaverse needs to go through three development stages: Digital Twin, Digital Native, and Virtual-Real Symbiosis. Currently, it is still in its early stage, with VR and AR devices serving as initial mediums. Accelerating the speed of metaverse technology development requires the collective strength of the entire industry chain.The metaverse industry chain has already gathered a wide range of upstream, midstream, and downstream companies.Upstream: Core Technologies Core technologies include hardware components, foundational software, and network technologies. Hardware component industries such as core chips, optical devices, displays, and sensors will directly affect the autonomy of domestic terminal industries. For example, GPUs, MCUs, and sensors must improve performance to meet the algorithm requirements of the metaverse.Midstream: Platform Technologies The metaverse requires platform technology companies that provide essential services to the application ecosystem. These companies are categorized into three main areas: digital twins, creative tools, and IT support platforms.Downstream: Products and Ecosystem The downstream sector of the metaverse industry is diverse, including XR devices, interactive technologies, and simulation. These products, along with games, social media, advertising, and other sectors, will drive the metaverse forward.Chinese Semiconductor Companies' Involvement in the Metaverse Chinese semiconductor companies are playing a key role in the metaverse’s development, as evidenced by the "2022 Hurun China Metaverse Potential Companies List." Of the 220 companies on the list, 36 (16%) are semiconductor-focused, second only to software and data services (17%) and media & entertainment (17%).The AR/VR chip sector, which is essential for the metaverse, includes companies like MediaTek, Airoha Electronics, Beijing Junzheng, Rockchip, Allwinner Technology, and Chipone Technology, showing that Chinese semiconductor firms are making strides in the AR/VR applications that power the metaverse.The optical, display, and interaction technologies—key components for metaverse devices—are also being developed by prominent Chinese companies like Leyard, OFILM, Sunny Optical, and BOE. These companies are focused on providing a complete set of solutions to drive the rapid development of metaverse applications.Lastly, in the semiconductor and electronic component sectors, companies are deeply developing specific chip technologies and expanding product lines to provide solutions for the innovation and application of metaverse products.
At the end of September 2022, Kejian Electronics conducted its second fire drill of the year.Smoke bombs created a more realistic environment, and with the sound of the fire alarm, employees covered their noses and crouched down. They evacuated in an orderly fashion along the walls to an open area.Each employee was required to practice using a fire extinguisher. The drill concluded with a summary from the drill leader, Mr. Zhang, who reinforced the importance of fire extinguisher classification, usage, and fire drill procedures.Lead Coordinator: Zhang LongjunMaterials Prepared by: Zhou Hong and DengAssisted by: Management Department
