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

mechanical pencil

A technology of mechanical pencils and refills, applied in mechanical pencils, printing, writing utensils, etc., can solve the problems of waste, cumbersome, inconvenient use, etc.

Inactive Publication Date: 2016-02-03
UNIV OF SHANGHAI FOR SCI & TECH
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, during drawing, the selection of drawing tools will definitely become a key factor affecting drawing efficiency, so pencils of different hardness must be prepared in advance, and used alternately during drawing to meet drawing requirements, which is a tedious and time-consuming process
And at present, the pencils on the market are mostly made of wood, and the raw materials are all derived from nature, and the number of cuts is countless every year. According to the survey, the amount of wood consumed by an ordinary wood pencil is 7.536 cubic centimeters. In the drawing process, The number of pencils used is more than one. In today's shortage of wood resources, such use is tantamount to a waste
[0003] In order to conform to the current development trend of the green and environmental protection industry, and pencils made of wood often cannot automatically core, which is extremely inconvenient to use, so it is very necessary to invent a mechanical pencil that can be loaded with different types of refills

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
  • mechanical pencil
  • mechanical pencil
  • mechanical pencil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] figure 1 It is an explanatory diagram of the structure of the mechanical pencil of the present invention in Embodiment 1.

[0031] Such as figure 1 As shown, the mechanical pencil 18 of the present invention can accommodate pen cores of various hardnesses for replacement, which includes: a barrel part of the pen barrel; and three types of pen core replacement parts arranged inside the barrel barrel,

[0032] The pen holder part comprises an upper pen holder 5, a lower pen holder 15 and a top cover 4, and the upper pen holder 5 is connected in rotation with the lower pen holder 15;

[0033] A variety of refill replacement parts include transmission components and core output components,

[0034] The transmission assembly includes a cam 7 and 3 linkages, and the 3 linkages are attached to the inner surface of the lower pen barrel 15 on the same horizontal line, and a linkage includes a guide rail 11, a first connector 8, and a second connector Part 10, the guide rail 1...

Embodiment 2

[0051] The following is a description of Embodiment 2.

[0052] In Example 2, the same symbols are assigned to the same structures as in Example 1, and the same descriptions are omitted. Embodiment 2 has been improved on the basis of Embodiment 1. A scale line is added at the place where the upper pen holder 5 and the lower pen holder 15 are connected in rotation. The position of each scale line corresponds to a linkage mechanism. On the scale line Models marked with 3 refills are HB, 2B and 3B.

[0053] Function and effect of embodiment

[0054] According to the mechanical pencil of the above invention, it can be used to accommodate pen cores with various hardnesses. It uses the upper pen barrel and the lower pen barrel as a rotary connection, and a cam is fixed on the upper pen barrel of the mechanical pencil. The three linkages are It is rotatably connected to the lower pen barrel, and the three linkage mechanisms are on the same horizontal line. Each linkage mechanism is...

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 provides a propelling pencil which can contain various refills for replacement. The propelling pencil is characterized in that the propelling pencil comprises a pencil holder cylinder part and a various refill replacing part which is arranged inside, the pencil holder cylinder part comprises an upper pencil holder cylinder and a lower pencil holder cylinder which are connected in a rotary mode, the various refill replacing part comprises a transmission assembly and a refill discharging assembly, and the transmission assembly comprises at least two connecting rod mechanisms and a cam; each connecting rod mechanism comprises two connecting parts connected to the inner surface of the lower pencil holder cylinder in a rotary mode, a guide rail and a restoration part, wherein the two connecting parts are connected to the two ends of the guide rail respectively in a rotary mode, and the restoration part is connected with the guide rail; the cam is fixed on the upper pencil holder cylinder and is used for pushing the connecting rod mechanisms, the refill discharging assembly comprises at least two refill containing tubes connected with the guide rails in a sliding mode, a pressing rod arranged on the axis of the upper pencil holder cylinder, and a propelling pencil refill discharging unit, and the propelling pencil refill discharging unit is connected to the lower end of the refill containing tube. According to the propelling pencil, various refills can be used, and automatic refill discharging can be achieved.

Description

technical field [0001] The invention relates to a mechanical pencil, which is used for loading different kinds of refills. Background technique [0002] Nowadays, college students majoring in science and engineering have to take basic courses such as "Engineering Drawing" that require manual drawing to prepare for follow-up courses and lay a solid foundation for professional courses. In a standard engineering drawing, it is often necessary to use pencils of different hardness such as 2B, HB, 2H to represent different types of lines. Therefore, during drawing, the selection of drawing tools will definitely become a key factor affecting drawing efficiency. Therefore, pencils of different hardness must be prepared in advance and used alternately during drawing to meet drawing requirements. This is a tedious and time-consuming process. And at present, the pencils on the market are mostly made of wood, and the raw materials are all derived from nature, and the number of cuts is ...

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 Patents(China)
IPC IPC(8): B43K21/02B43K24/06
Inventor 周博唐静吕轩宋煜霄刘磊然朱坚民钱炜施小明
Owner UNIV OF SHANGHAI FOR SCI & TECH