Connecting Member with Notched Limit Portions for Swingable Roller Unit

The rotational force receiving member is nested within the connecting member, with limit posts positioned within notches of the connecting member. This nested configuration allows the rotational force receiving member to swing freely within the space defined by the notches while the notches themselves constrain the movement to prevent complete detachment, thus resolving the contradiction between freedom of movement and connection stability.

The connection structure transitions from a static fixed connection to a dynamic swingable connection. The rotational force receiving member is designed to swing within a certain angle range relative to the connecting member, allowing dynamic adjustment during operation while the limit posts and notches provide dynamic constraints that prevent detachment. This dynamic design enables both ease of operation and maintained reliability.

The connecting member serves multiple functions: it provides structural support, defines the swing angle through notches, and prevents detachment through the same notch structure. The limit posts on the rotational force receiving member similarly serve both to enable swinging motion and to constrain the range of motion. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while achieving adaptability.

The connecting member is segmented into functional zones: the tube portion for structural support, the limit portions with notches for angular constraint, and the bottom portion for additional positioning. This segmentation allows each part to perform its specific function efficiently while keeping the overall design relatively simple. The notches are segmented features that provide discrete angular positions without requiring complex continuous guidance mechanisms.