Unlock instant, AI-driven research and patent intelligence for your innovation.

Retractable mechanical pencil

A technology for automatic pencils and pen holders, applied in the direction of mechanical pencils, pen holders, printing, etc.

Inactive Publication Date: 2012-05-09
常熟市磊燕办公用品有限公司
View PDF13 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary mechanical pencils are relatively long, and they are easy to lose when you carry them around. When you store them in your clothing pocket, the pen tip is easy to scratch your clothes or poke your body, which poses a certain safety hazard.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Retractable mechanical pencil
  • Retractable mechanical pencil
  • Retractable mechanical pencil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0021] figure 1 It is a structural schematic diagram when the stretchable mechanical pencil of the embodiment of the present invention stretches out; figure 2 It is a structural schematic diagram of the retractable mechanical pencil of the embodiment of the present invention after contraction; the retractable mechanical pencil includes a pen cap 1, a pen point 2, a pen holder 3, a pen holder 4 and a pen end cap 5, and it is characterized in that the described pen holder 3 can be The pen holder 4 telescopically slides. When the pen holder 3 stretches out from the pen holder 4, it is fixed by threaded connection. When the pen holder 3 retracts in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a retractable mechanical pencil, which comprises a pencil cap, a pencil nib, a pencil holder, a pencil vase and a pencil end cover. The pencil holder can retractably slide in the pencil case, is fixedly connected in a threaded manner when extending out from the pencil case and is magnetically fixedly connected by a magnet when retracting back to the pencil case. By the aid of a retractable structural design of the retractable mechanical pencil, the pencil holder can be effectively and completely drawn back in the pencil case, the volume of the mechanical pencil is reduced, and the mechanical pencil is carried conveniently. Simultaneously, the pencil nib of the mechanical pencil also can be drawn back into the pencil case with the pencil holder, and accordingly is prevented from scratching clothes or injuring human bodies when the pencil is loaded and stored in a pocket of a user.

Description

technical field [0001] The invention relates to a pen, in particular to a retractable mechanical pencil, which belongs to the technical field of office supplies. Background technique [0002] The pen is a great invention of mankind, and it is a tool for writing or drawing. Generally, the pen draws symbols or pictures on paper or other solid surfaces through the colored solid or liquid (ink) on the pen tip, and also uses the characteristic that the hardness of the solid pen tip is greater than the writing surface to carve symbols or pictures on the surface. In ancient times, China used writing brushes to write; ancient Greece and ancient Rome painted wax on the wooden surface, and then used iron rods to draw on the wax surface; and ancient Egypt and Persia used sharpened reed rods as pens; In Europe and the United States in the Middle Ages, reed pens or quill pens were used. What people generally use now is fountain pen and ball-point pen, draws art draft and draws then mu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B43K21/00B43K3/04
Inventor 屈春燕
Owner 常熟市磊燕办公用品有限公司