Yueluo Customized 304 Stainless Steel Holes with Elastic Retaining Ring C-type Circlip GB893 Retaining Ring Inner Circlip

The commonly used methods for preventing loosening of fasteners currently include non detachable locking schemes and locking schemes that increase friction. The non detachable anti loosening scheme uses methods such as welding, bonding, or spot riveting to change the detachable threaded connection into a non detachable threaded connection. In the non detachable locking scheme, Threaded fastener can not be reused, and the operation is troublesome. They are often used in some important occasions that require high locking performance without disassembly. The anti loosening plan of increasing friction force uses the method of increasing the friction force between the bolt (screw) head and the nut end face to achieve the purpose of anti loosening. The anti loosening scheme for increasing friction is not limited by space and can be disassembled repeatedly, but its reliability is poor. After working for a certain period of time, the anti loosening effect will be reduced due to vibration and other reasons.

Riveting is a construction method used to combine two metal parts. Its principle is to extrude at least one of the metal parts to cause deformation, and the deformation area is embedded with another metal part to fix and combine the two metal parts. Therefore, riveting technology is commonly used to fix riveted parts such as nuts or rivets to metal plates.

Generally speaking, the metal plate needs to first open holes for inserting riveted parts, and then use a fixture to squeeze the two sides of the metal plate along the forward direction of the metal plate, causing deformation in the plane direction of the metal plate, which causes the inner edge of the holes to shrink and fit the riveted parts. The existing riveting technology is not suitable for thin plates. Due to insufficient thickness for compression in the forward direction of the thin plate, insufficient deformation in the forward direction results in sufficient deformation in the plane direction to embed the riveted part, thus the riveted part cannot be firmly fixed to the thin plate.

In the process of mechanical assembly, we often use pins to connect two parts, and positioning pins are usually sunk into the pin mounting holes on Machine element. During or after the assembly process, we often need to pull out the pins for assembly, revision, or repair of the parts. However, the existing methods of extracting the positioning pins generally use tools such as pliers, hammers, and shovels to extract the positioning pins. However, this method can easily damage the pin holes and pins, and in severe cases, it can directly lead to the scrapping of the original parts; Another method is to use a threaded pulling rod with a threaded head to screw it into the threaded hole of the positioning pin. By forcefully rotating and pulling the pulling rod, the positioning pin can be pulled out. However, to ensure assembly accuracy between parts, the matching between the positioning pin and the pin hole on the part is tight and there are many pins, so this method is not convenient and time-consuming to operate.

The Guangdong bolt refers to a Rivet nut that can be installed on the installed parts with a wide range of plate thickness without adverse conditions. The Rivet nut is provided with an internal thread part which forms an internal thread on the inside, a hollow tubular part which is adjacent to the internal thread part, and a flange with an opening which forms the end on the opposite side of the internal thread part. The internal thread part and the tubular part are inserted into the mounting hole of the installed part, so that a part of the tubular part is plastically deformed to expand the diameter. The Rivet nut is installed on the installed part by clamping the installed part between the deformed expanding part and the flange. The tubular part has a tubular part adjacent to the internal threaded part that is thinner than the wall of the internal threaded part, and a second tubular part located between the tubular part and the flange that is thinner than the wall of the tubular part, causing plastic deformation of a part of the second tubular part to expand its diameter. Subsequently, the deformation of the second tubular part causes plastic deformation of the tubular part to expand its diameter, thereby installing it on the installed component.