116results about "Propelling pencils" patented technology

To provide a pen structure that allows for easy switching of colors and functions, and that is easy to write with without interference during writing. [Solution] The pen tip support structure for a multi-core writing instrument comprises a pen shaft held by hand, three core holes 21a to 21c extending inside the pen shaft along the axis of the pen shaft, the three core holes 21a to 21c being oriented to open outward from the direction along the axis as they move from the base end to the tip end of the pen shaft, and three core-shaped pen tip members 11a to 11c inserted into the three core holes 21a to 21c respectively, and a wedge-shaped residual region is defined between the three core holes 21a to 21c inside the tip of the pen shaft 10.

The application provides a connecting structure and a pen, and relates to the technical field of pens. The connecting structure comprises a first connecting part and a second connecting part connected with each other. The second connecting part comprises a receiving groove, and the first connecting part is arranged in the receiving groove. The first connecting part comprises a plurality of first connecting arms capable of elastically deforming. The plurality of first connecting arms are arranged to form a slot. The first connecting part is connected with a first structural member outside the connecting structure through the slot, and each first connecting arm is clamped to the first structural member. The outer periphery of the second connecting part is connected with a second structural member outside the connecting structure. In the connecting structure provided by the application, the second connecting part is connected with the second structural member alone, and each first connecting arm does not need to be connected with the second structural member. The first connecting arms can avoid being limited by the second structural member, have a larger deformation space, can better wrap the first structural member, i.e. a pen core, and can reduce the size precision requirements of the connecting structure and the pen core, and are more beneficial to production.

To provide a refill case for a mechanical pencil capable of more reliably maintaining a state where a refill take-out port is closed.SOLUTION: A mechanical pencil refill case includes a case main body for housing a mechanical pencil refill, a cover member capable of opening and closing a refill take-out port of the case main body by being slid with respect to the case main body, and a lock member configured to switch between an engaged state in which the lock member is engaged with one of the case main body and the cover member and a disengaged state in which the lock member is not engaged with the one of the case main body and the cover member by moving with respect to the case main body and the cover member in an intersecting direction intersecting a sliding direction of the cover member with respect to the case main body. In the engaged state, the cover member is configured to be maintained in a state of closing the refill core take-out port and in a state of being non-slidable with respect to the case main body.SELECTED DRAWING: Figure 6