3results about How to "Small control force" patented technology

This utility model provides an automatic return device based on a cam mechanism, comprising: a base plate fixed to a pump body at the end of a displacement control shaft; a cam mechanism fixed to the displacement control shaft and circumferentially connected thereto, the outer circumferential surface of the cam mechanism having a V-groove; a slider mechanism, one end of which is rotatably connected to the base plate, and the other end extending into the V-groove and rollingly connected thereto, wherein when the displacement control shaft is in the return-to-center state, the slider mechanism is located at the bottom center of the V-groove; and a reset mechanism connected between the slider mechanism and the pump body, applying a preset pulling force to the slider mechanism to maintain contact between the slider mechanism and the V-groove.

The invention relates to a motor vehicle lock (1) having a locking mechanism (2) with a pivotable locking bolt (3) and a pivotable locking pawl (4) associated with the locking bolt (3). It is proposed that the motor vehicle lock (1) has a spring assembly (11) and a pivotable preloading lever (13) preloaded or preloadable in a preloading direction (12) by the spring assembly (11), which preloading lever is in a preloading transmission mechanism engagement (14) or can be brought into a preloading transmission mechanism engagement with the locking pawl (4), and the preloading transmission mechanism engagement (14) is designed such that the locking pawl (4) is preloaded or preloadable by the spring assembly (11) in a falling direction (15) with a locking pawl preloading force by means of the preloading transmission mechanism engagement (14), and the preloading transmission mechanism engagement (14) is not self-locking from the locking pawl (4) to the preloading lever (13) in a main locking state and / or in a prelocking state.

The utility model relates to a four-wheel-drive hitching control mechanism and a tractor, the four-wheel-drive hitching control mechanism comprises a control assembly, a linkage assembly and a hitching assembly, and the control assembly is hinged to the linkage assembly; the linkage assembly comprises a linkage rod, a linkage rocker arm and a linkage rotating shaft, the end of the linkage rotating shaft is fixedly connected with the linkage rocker arm, and the linkage rod is hinged to the control assembly and fixedly connected with the linkage rocker arm. The linkage rocker arm is used for driving the linkage rotating shaft to rotate through the linkage rocker arm under the lifting and pressing control of a control assembly; the hooking assembly comprises a hooking shifting rod connected with the linkage rotating shaft, the hooking shifting rod is connected with a hooking shifting fork, and the hooking shifting fork is connected with a meshing sleeve used for clutch transmission. According to the utility model, the stroke of the control mechanism can be reduced, the control force is reduced, and meanwhile, the four-wheel-drive hitching control mechanism is more compact in structure and suitable for equipment conditions with smaller space.