Watch strap connection shaft, ear, watch bolt, spring pin, watch pin, watch pin, watch accessory parts

Hinge refers to a hinge that always forms a folding structure, connecting two parts of an object to make it movable. The fixing screws of the hinge are installed on the corresponding object, and the requirements for the fixing screws vary depending on the usage environment. Most of the existing screws are set on a single threaded structure. When invading wooden doors, the invasion speed is slow, the invasion effect is not good, and it is not conducive to invading hard wooden doors. Commonly used screws are made of iron materials, which are easy to rust in contact with water vapor in wooden doors, reducing their lifespan. In addition, when the screws are inserted into the wooden door, the generated chips will not be quickly discharged and will stay inside the door, forming expansion stress around the screws, squeezing the wooden substrate. The connection between the screws and the wooden door is stable, which can easily affect the normal installation of the hinge and have poor usage effect. As mentioned above, in order to address the shortcomings of traditional hinge thread structure, Guangdong Yueluo Hardware Industry Co., Ltd. has designed hinge threads with simple structure, convenient use, fast construction, and good fastening effect

A screw component comprising a screw body, a spring, and an installation plate. The screw body comprises a nut and a screw, with a multi angle groove at the top of the nut. The screw is composed of an upper and a lower part, and the diameter of the upper part of the screw is greater than that of the lower part. A clamping groove is set at the lower end of the upper part of the screw; The installation plate is equipped with a groove corresponding to the spring, and the groove is equipped with an extension groove, which is L-shaped; One end of the spring is provided with an extension body, which corresponds to the extension groove; The spring is installed between the nut and the mounting plate, and the spring extension body is installed in the groove extension groove. Guangdong Yueluo Hardware Industry Co., Ltd. has the following advantages: it can prevent the spring from rotating with the screw, has a simple structure, and is convenient to use.

The following is a further explanation of the present invention in conjunction with the accompanying drawings and embodiments. Figure 1 is a schematic diagram of the welding method for copper pressed rivet nut columns on sheet metal parts according to Example 1 of the present invention; Figure 2 is a schematic diagram of the welding method for copper riveted nut columns on sheet metal parts according to Example 2 of the present invention; The attached drawing is marked as: 1- Sheet metal substrate; 2-Aluminum sheet; 6- Copper rivet nut column. The specific implementation method needs to be explained that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

Quick release screws are widely used in aviation recording equipment due to their ease of operation, such as the operation panel on the central control panel and upper operation panel of the aircraft. However, the assembly of quick release screws requires the sleeve, spring, and rod of the quick release screws to be assembled in sequence. Usually, the quick release screw crimping tools provided by foreign suppliers can only crimp some smaller sized quick release screws, Alternatively, customizing a specialized quick release screw crimping tool for a certain product can be time-consuming and costly, requiring the design of a universal aviation airborne equipment quick release screw assembly device.

T-bolt can be directly put into the aluminum profile groove. It can be automatically positioned and locked during installation. It is often used together with Flange nut. It is a standard mating connector for installing corner pieces. It can be selected according to the profile groove width and different series of profiles. T-bolts belong to movable foundation bolts. Bolt: Machine element, cylindrical threaded fastener with nut. A type of fastener consisting of a head and a screw (cylindrical body with external threads), which needs to be matched with a nut to securely connect two parts with through holes. This type of connection is called bolt connection. If the nut is unscrewed from the bolt, it can separate these two parts, so bolt connection is a detachable connection. There are hexagonal head, round head, square head, countersunk head, and so on. Hexagonal heads are commonly used. Generally, a countersunk head is used in areas where the surface is required to be smooth without protrusions after connection, as the countersunk head can be screwed into the part. Round heads can also be screwed into the parts. The tightening force of the square head can be larger, but the size is large.