Benz recalled seven S-class cars due to poor torque in the fixation bolt

Previously, meisides Benz (China) car sales limited filed its recall program with the CMSA according to the requirements of the act and the implementation of the act. Since ie, recall the portion of imported S-class cars produced between 06-jun-2018 and 21-aug-2018, for a total of seven. It is possible that the wear plate retaining bolt torque for columns a, B, and C of some vehicles within the scope of this recall may not meet the requirements. In the event of a vehicle crash with a curtain of safety at the trigger side, unassembled visors may detach from the body and enter the occupants' compartment, increasing the risk of injury to personnel on the vehicle; And can result in a side curtain gas that fails to provide protection to occupants in the manner expected, posing a safety hazard. Macedus Benz (China) the car will, free of charge, inspect the installation status of the A-column, B-column, and C-column veneers for vehicles within the recall range and conduct necessary inspections as necessary, ensuring that the installation status of the veneers meets the requirements to eliminate safety hazards.

read article

Japan will never loosen the nut. Why can't the principle be disclosed and imitated?

Japan will never loosen the nut. Why can't the principle be disclosed and imitated? There is a saying that most excites the Chinese people's nerves: you can't create "Japan's never loose nut" for your principles and drawings! However, I can pat my chest and tell you that if there are drawings, Chinese people can make such nuts. In order to gain attention, most of the online We Media would not hesitate to use the title of "Never stop saying amazing words" to attack the confidence of Chinese people. However, this kind of nut can not be made by the Chinese, even by the Japanese themselves or by the Germans who also have deep manufacturing skills with Japan. Hadlock nut, what's the secret that can't be copied? Japanese Ruolin Keyan participated in an exhibition as a company employee. He brought back some samples at the exhibition, and one of the anti whirl nuts attracted his attention. This kind of nut, which uses stainless steel wire as clamp to prevent looseness, is complex in structure and expensive. If Lin Keyan gives full play to the craftsmanship spirit of the Japanese and ponders over the question, "Can't it be simple and cheap?". Later, in 1961, he designed an anti rotation nut, which he called "U nut". The locking principle of the U nut is to prevent the relative rotation of the nut and bolt through the elastic strong pressure between the friction plate integrated with the nut and the bolt thread surface. If Lin Keyan founded a company - Fuji Precision Manufacturing Institute - to produce and sell his new nuts, this kind of nuts will soon gain a foothold in the market. If Lin Keyan is also very confident in his design, he has put forward the advertisement of "never loose nuts". However, some customers complained that the U-nut was loose on the excavator and pile driver. If Lin Keyan left the company he founded in order to adhere to his belief of "never loosening up", he tried hard to think of ways to improve. In 1973, if Lin Keyan looked up at the tall archway at the entrance when he was passing by the Tsuyoshi Ta She (Tsuyoshi District, Osaka City) near his home, he suddenly thought, "If you put a wedge into it, it will not loosen". So he designed a structure integrating hammer, wedge and nut according to the principle of driving wedge.

read article

Common terms for mechanical properties of fasteners

Torque is a force that produces rotation Here are some examples of the most common torques:

read article

Warmly congratulate Jingjiang Yongyou Standard Parts Co., Ltd. on launching its website!

Warmly congratulate Jingjiang Yongyou Standard Parts Co., Ltd. on launching its website!

read article

What is a hot-dip galvanized pin?

The function of the hot-dip galvanized pin is to locate and fix the parts. There are generally two types: cylindrical and conical. Hot dip galvanized pins are usually installed by two methods: pressing method or soft metal tapping method. Pins are usually conical, pointed or peaked wood, small metal nails, used to nail or fasten (boards, tiles, soles, uppers, furniture molds and components) or repair holes.

read article

Function and Anti loose Principle of Hot Galvanized Spring Washer

Hot dip galvanized spring washers are widely used in load-bearing and non load-bearing structures of general mechanical products. They are characterized by low cost, convenient installation and are suitable for frequent assembly and disassembly. In various mechanical connectors, bolt locking is a very important link. In life, there are many methods to prevent the bolt from loosening, including the use of hot galvanized spring washers to prevent loosening. Hot dip galvanized spring washer can also be called spring washer in screw industry. So why use it often? This has to be explained from the function and principle of hot-dip galvanized spring washer.

read article