Retractable pencil for art
An activity and art technology, applied in mechanical pencils, printing, writing utensils, etc., can solve the problems of pencil cores that are easy to break, consume forest resources, and cannot be recycled, and achieve easy production and manufacturing, broad market space, and resource conservation. Effect
Inactive Publication Date: 2016-01-27
曹松和
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AI Technical Summary
Problems solved by technology
[0002] Wooden and paper roll pencils bring convenience to people's work and study, but at the same time consume a lot of valuable forest resources
Existing wooden and paper-rolled pencils need to be rolled and sharpened and the pen core can be sharpened to write. When the pen is used to 6-7cm, it is often thrown into the trash can because of the inconvenience of holding the pen. The rolled paper, Sawdust cannot be recycled, causing a lot of waste, and the exposed pencil lead is easy to break
Method used
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Embodiment Construction
[0017] A mechanical pencil for fine arts, comprising a pen core 1 and a pen holder 2, a pen core propeller and a pen core protection tube 3 are arranged in sequence from top to bottom in the cavity of the pen holder, the pen core is placed in the pen core protection tube, and the pen core The outer wall of the core-protecting tube 3 is provided with a limiting protrusion 10, and the core-protecting tube of the pen core is clamped and fixed in the inner cavity of the pen holder 2 through the limiting protrusion.
[0018] The refill propeller is composed of a nut 4, a screw rod 5, and an internally threaded tube 6. The nut is fixedly arranged in the middle of the cavity of the pen holder. The threads of the screw rod match the threads of the nut and the internally threaded tube respectively. The adjacent threads on the screw rod 5 The spacing is 3-6mm.
[0019] The screw is placed in the cavity of the internally threaded tube, its lower end is screwed into the nut, and placed ab...
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The invention provides a retractable pencil for art and belongs to the technical field of pencil making. The retractable pencil comprises a pencil lead and a pencil holder. A pencil lead propeller and a pencil lead protective tube are sequentially arranged in a cavity of the pencil holder from top to bottom. The pencil lead is arranged in the pencil lead protective tube. The retractable pencil is characterized in that the pencil lead propeller is composed of a nut, a threaded rod and an inner threaded tube; the nut is fixedly arranged in the middle of the cavity of the pencil holder, and a thread of the threaded rod is matched with threads of the nut and the inner threaded tube; the threaded rod is arranged in a cavity of the inner threaded tube, the lower end of the threaded rod is screwed into the nut and arranged above the pencil lead, and the threaded rod and the pencil lead are coaxial; and a rotary handle is arranged at the upper end of the inner threaded tube and arranged outside the upper end opening of the pencil holder, the rotary handle is connected with the inner threaded tube through a columnar connecting block, and the inner threaded tube is rotationally connected with the inner wall of the pencil holder in a clamped manner through a columnar connecting block. The retractable pencil is ingenious in conception, simple in structure, easy to produce and manufacture, low in cost, free of lead breakage, high in utilization rate of the pencil lead, capable of saving resources and assisting a user in grasping a correct pencil holding posture and environment-friendly, and has wide market space.
Description
technical field [0001] The invention relates to a structure of a mechanical pencil for art, and belongs to the technical field of pen making. Background technique [0002] Wooden and paper roll pencils bring convenience to people's work and study, but consume a large amount of valuable forest resources at the same time. Existing wooden and paper-rolled pencils need to be rolled and sharpened and the pen core can be sharpened to write. When the pen is used to 6-7cm, it is often thrown into the trash can because of the inconvenience of holding the pen. The rolled paper, Sawdust cannot be recycled, causing a lot of waste, and the exposed pencil lead is easy to break. Therefore, there is a need for a pencil with a continuous core, high utilization rate of the pen core, resource saving, and environmental protection. Contents of the invention [0003] The purpose of the present invention is to provide a kind of mechanical pencil for art that can improve the utilization rate of...
Claims
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Inventor 曹松和
Owner 曹松和