Abstract: An electronic expansion valve and an assembly method therefor. The electronic expansion valve includes a screw rod component, a movable connection component, a valve pin component and an elastic element. One end of the elastic element abuts the movable connection component, and the other end thereof abuts the valve pin component. In the period from the valve pin component closing the valve port part to the screw rod component moving a pre-set displacement amount in the valve closing direction, the elastic element does not generate an elastic force pushing the valve pin component towards the valve port part; and in the period from the valve pin component closing the valve port part to in a case that the screw rod component moving more than the pre-set displacement amount in the valve closing direction, the elastic element generates an elastic force pushing the valve pin component towards the valve port part.

Abstract: An electric valve includes a valve body component, a transmission component, and a valve needle component. The valve body component includes a valve core sleeve, and the valve core sleeve includes a first inner guide wall. A movable connecting component is in a suspended connection with the transmission component, the movable connecting component includes a connecting body, the connecting body includes a first outer guide wall, the connecting body includes a lower opening portion and an accommodating hole in communication with the lower opening portion, and a hole wall of the accommodating hole includes a second inner guide wall. The valve needle component includes a valve needle, the valve needle includes a second outer guide wall, the second outer guide wall is slidably in clearance fit with the second inner guide wall. A manufacturing method for the electric valve is further disclosed.

Abstract: An electric valve includes a valve body component, a transmission component, and a valve needle component. The valve body component includes a valve core sleeve, and the valve core sleeve includes a first inner guide wall. A movable connecting component is in a suspended connection with the transmission component, the movable connecting component includes a connecting body, the connecting body includes a first outer guide wall, the connecting body includes a lower opening portion and an accommodating hole in communication with the lower opening portion, and a hole wall of the accommodating hole includes a second inner guide wall. The valve needle component includes a valve needle, the valve needle includes a second outer guide wall, the second outer guide wall is slidably in clearance fit with the second inner guide wall. A manufacturing method for the electric valve is further disclosed.

Abstract: An electronic expansion valve and an assembly method therefor. The electronic expansion valve includes a screw rod component, a movable connection component, a valve pin component and an elastic element. One end of the elastic element abuts the movable connection component, and the other end thereof abuts the valve pin component. In the period from the valve pin component closing the valve port part to the screw rod component moving a pre-set displacement amount in the valve closing direction, the elastic element does not generate an elastic force pushing the valve pin component towards the valve port part; and in the period from the valve pin component closing the valve port part to in a case that the screw rod component moving more than the pre-set displacement amount in the valve closing direction, the elastic element generates an elastic force pushing the valve pin component towards the valve port part.