2results about How to "Reasonable space design" patented technology

The utility model provides a computer sewing machine, and belongs to the technical field of sewing machines. The problem that an existing sewing machine is not high in sewing quality is solved. The computer sewing machine comprises a base, a needle plate with a needle falling hole and a rotating shuttle located below the needle plate, and further comprises a guide seat arranged in the base, a transmission shaft located below the rotating shuttle and a thread shifting rod which is in a C-shaped strip shape and is arranged around the periphery of the rotating shuttle. The transmission shaft is horizontally arranged in the front-back direction of the sewing machine and connected to the guide seat in a sliding mode, the lower end of the thread shifting rod is connected with the transmission shaft, and the transmission shaft can do reciprocating motion in the axial direction and do circumferential reciprocating rotation at the same time, so that the upper end of the thread shifting rod does circumferential circulating motion and can be located between the needle falling hole and the rotating shuttle. According to the design of the computer sewing machine, the control difficulty is reduced, the sewing error is obviously reduced, and the sewing quality is further improved.

This utility model discloses a shift fork structure for RC model cars, relating to the technical field of RC model cars. It includes a shift fork assembly, a left moving assembly, a right moving assembly, a differential, a drive unit, and a housing. The shift fork assembly, left moving assembly, and right moving assembly are all installed inside the housing. The drive unit is fixed to the outside of the housing, and its output end passes through the housing and connects to the shift fork assembly. One end of the shift fork assembly is connected to the left moving assembly, and the other end is connected to the right moving assembly. The differential is located between the left and right moving assemblies. This shift fork structure for RC model cars, through the coordinated movement of the shift fork assembly, left moving assembly, right moving assembly, differential, and drive unit, can achieve four-wheel, three-wheel, and single-sided (left and right) independent drive functions, ensuring the flexibility and reliability of power output. It is suitable for off-road scenarios with high handling performance requirements, improving the user experience.