CN2811011Y

CN2811011Y - Automatic head-retracting pen

Info

Publication number: CN2811011Y
Application number: CN 200520023711
Authority: CN
Inventors: 闫超
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-23
Filing date: 2005-03-23
Publication date: 2006-08-30
Anticipated expiration: 2015-03-23

Abstract

The utility model provides an automatic head-retracting pen, which is designed for preventing the phenomenon of picking a cartridge head to be damaged. The utility model is characterized in that bosses are arranged on the inner circumference of a pen holder; bosses are arranged on the outer circumference of a cartridge; the pen grasped part of the pen holder is provided with three strip holes in which three arc-shaped spring sheets respectively penetrate; the upper ends of the arc-shaped spring sheets are connected with the bosses of the pen holder, and the lower ends of the arc-shaped spring sheets are bunted to the bosses of the cartridge; in addition, springs are arranged among the bosses of the cartridge and the inner bosses at the front end of the pen holder. While in use, three fingers pinches the three arc-shaped spring sheets, the cartridge head is pushed outside the pen holder for writing by using the power usually for grasping the pen; when the fingers leave the arc-shaped spring sheets, the cartridge head automatically retracts under the action of the springs. Thus the occurrence of the phenomenon of picking the cartridge head to be damaged is thoroughly avoided.

Description

Automatic drop-head pen

Technical field: the utility model relates to a kind of writing with pen.

Background technology: at present, the writing pen that uses in work, the study, such as propelling pencil and ball pen, though can having, its pen core head exposes or the two states of withdrawing, but in normal conditions, its pen core head all is in the state of exposing, like this, in use just to stab bad pen core head phenomenon unavoidably.And this phenomenon is especially common in middle and primary schools, we can say that almost each students in middle and primary schools can have the phenomenon of stabbing bad pen core head to take place every year, and this also is a kind of property loss.

The utility model content: task of the present utility model is at the problems referred to above, and a kind of automatic drop-head pen is provided, and this pen is when writing, and pen core head stretches out automatically, and when stopping to write, pen core head is withdrawn automatically.This technology side's solution is: a kind of automatic drop-head pen, comprise penholder, pen core, it is characterized in that: on the inner periphery of penholder, be provided with boss, the excircle of pen core is provided with boss, the position that holds a pen of penholder has three cylindrical voids, has three arc spring laminations to penetrate three cylindrical voids respectively, and its upper end connects aforesaid penholder boss, the lower end props up aforesaid pen core boss, is provided with spring in addition between the inner convex platform of pen core boss and penholder front end.Automatic drop-head pen with this scheme making, during use, three fingers pinch three arc spring laminations respectively, pen core head can be released penholder with the strength that holds a pen usually writes, when finger leaves arc spring lamination, pen core head is withdrawal automatically under the effect of spring, so just can thoroughly avoid taking place to stab bad pen core head phenomenon.

Description of drawings:

Fig. 1 is a structural representation of the present utility model, analyses and observe along the A-A of Fig. 2.

Fig. 2 is the vertical view of Fig. 1.

The specific embodiment: as shown in the figure, the automatic drop-head pen that the utility model provides, comprise penholder, pen core, it is characterized in that: on the inner periphery of penholder 2, be provided with boss 6, on the excircle of pen core 7, be provided with boss 4, have three cylindrical voids at the position that holds a pen of penholder, have three arc spring laminations 5 to penetrate three cylindrical voids respectively, the upper end of its arc spring lamination 5 connects penholder boss 6, and the lower end props up pen core boss 4, in addition, between the inner convex platform 1 of pen core boss 4 and penholder front end, be provided with spring 3.This penholder can be provided with 3 sections, the section with section between by being threaded, in order to guarantee the arc spring lamination duty, the spacer of arc spring lamination can be set on the top of pen core boss.The utility model is applicable to ball pen, propelling pencil and signature pen etc.

Claims

1, a kind of automatic drop-head pen, comprise penholder, pen core, it is characterized in that: on the inner periphery of penholder (2), be provided with boss (6), the excircle of pen core (7) is provided with boss (4), the position that holds a pen of penholder has three cylindrical voids, has three arc spring laminations (5) to penetrate three cylindrical voids respectively, and its upper end is connected on the penholder boss (6), its lower end props up pen core boss (4), is provided with spring (3) in addition between pen core boss (4) and penholder front end inner convex platform (1).