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Mechanical pencil with core protector

A mechanical pencil and functional technology, applied in writing utensils, writing connectors, printing, etc., can solve problems such as complex structure, unstable writing, and difficult to control the length of strokes

Active Publication Date: 2022-07-15
WENZHOU TIANJIAO PEN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the mechanical pencil with the above structure also needs a complex mechanism to deflect the entire pen core assembly when writing, the pen holder shifts, the writing is unstable, and the stroke length is difficult to control, so the structure is complicated and the manufacturing cost is high.

Method used

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  • Mechanical pencil with core protector
  • Mechanical pencil with core protector
  • Mechanical pencil with core protector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: In this embodiment, a linkage member 6 is provided in the pen holder assembly 1, and the linkage member 6 axially extends to the lower end of the pen holder assembly 1, and the number of the linkage member 6 is two, which are located symmetrically on both sides of the pen core assembly 2. position, the inner cavity of the pen barrel assembly 1 is provided with an axial groove 7 whose shape matches the linkage member 6 corresponding to the position of the linkage member 6, and the linkage member 6 is trapped in the axial groove 7. . The lower end of the linkage member 6 abuts on the refill sheath 5 . The linkage members 6 located on both sides are connected into one body by an annular connecting portion 61 , and the annular connecting portion 61 surrounds the outer ring of the refill assembly 2 . In this way, the linkage member 6 is guided by the axial groove 7, and the parts on both sides act at the same time, so that pressure can be applied to the refill...

Embodiment 2

[0036] Embodiment 2: In this embodiment, the pen holder assembly 1 is provided with a linkage member 6 , the linkage member is annular, and the lower end of the linkage member 6 abuts on the pen core sheath 5 . The grip sleeve 4 is provided with protrusions 41 extending into the pen barrel assembly. There are at least two or more protrusions 41, which are evenly distributed along the circumference. The protrusions 41 pass through the axial opening on the pen barrel assembly 1. The groove 11 extends into the corresponding radial hole on the linkage 6 .

Embodiment 3

[0037] Embodiment 3: In this embodiment, the grip sleeve 4 is provided with a protruding block 41 extending into the pen barrel assembly, and the protruding block 41 is in direct contact with the pen core sheath 5 . There are at least two or more bumps 41, which are evenly distributed along the circumference.

[0038] In the present invention, a grip sleeve locking mechanism can be provided, and the grip sleeve locking mechanism can lock and release the axial movement of the grip sleeve. In this way, when the grip sleeve is locked, the grip sleeve cannot be moved axially, and the mechanical pencil can be used like a common mechanical pencil without a core protecting function. In this way, the user can be given an opportunity to lock the grip cover when the user does not want to use the core protecting function of the mechanical pencil.

[0039] The grip sleeve locking mechanism may be as follows: including a manipulation portion 81 and a locking block 82, the manipulation por...

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PUM

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Abstract

The invention relates to an automatic pencil with a core-protecting function, comprising a pen holder and a pen holder arranged in the pen holder. The pen holder is provided with a grip sleeve for hands to hold when writing, and the grip can be positioned at a position relative to the pen holder. Axial movement within a certain range, the front end of the pen holder assembly is provided with a refill sheath, and the refill sheath and the grip have a linkage structure. The invention utilizes the writing pressure acting on the grip sleeve during writing to move the grip sleeve downward, and the linkage structure can drive the refill sheath to move down, shorten the exposed length of the refill, and achieve the purpose of protecting the refill from being easily broken.

Description

technical field [0001] The invention relates to an automatic pencil with a core protecting function. Background technique [0002] When writing with a mechanical pencil, people are often accustomed to holding the barrel obliquely. In this way, the pen core at the front end of the pen holder assembly may be easily broken when more exposed. [0003] In order to solve the above-mentioned problems, Chinese patent CN104742576A improves on the basis of traditional mechanical pencils. The front end of the refill sheath is set into a spindle shape, and the opening of the front end of the pen barrel assembly is used to contact the surface of the spindle-shaped refill sheath to promote the pen The core sheath protrudes toward the front end during writing, thereby shortening the exposed length of the pen core, so as to achieve the purpose of protecting the pen core during writing. [0004] However, the mechanical pencil with the above structure also requires a complex mechanism to de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B43K23/10
CPCB43K23/10
Inventor 韩爱国郭礼庚程小青
Owner WENZHOU TIANJIAO PEN IND