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Pencil lengthening sleeve

A pencil and long sleeve technology, applied in the field of stationery, can solve the problems of waste, discarded short pencils, loose pencil leads, etc., and achieve the effect of saving resources and saving pencils

Inactive Publication Date: 2009-10-21
李宗双
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] After children or primary school students use pencils, the tip of the pencil is often broken due to improper storage. When the pencil is half used, it is too short, and the correct posture of holding the pen cannot be obtained when writing, and the pencil core is prone to loosening. In case the short pencil is always discarded, causing waste

Method used

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  • Pencil lengthening sleeve
  • Pencil lengthening sleeve
  • Pencil lengthening sleeve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as figure 1 , 2 The pencil extension set of the best embodiment shown includes a sleeve 1 with six ribs 13 distributed on the inner wall circumference, a protrusion 2 and an ejection device 3, and the ejection device 3 includes a top core 31, a top rod 33 and a spring 32, The protrusion 2 is set in the sleeve 1 to prevent the ejector device 3 from slipping out of the sleeve 1. The top core 31 has a T-shaped structure, and the top core 31 is stuck on one side by the protrusion 2. The rod of the top core 31 passes through the protrusion. 2 is threadedly connected with one end of the push rod 33, and the other end of the push rod 33 stretches out of the sleeve 1.

[0020] When in use, the tail end of the pencil is nested in the sleeve 1 with six ribs 13. When the pencil is too short to write any more, press the end of the push rod 33 to eject the pencil, unclamp the push rod, and The rod 33 springs back automatically.

Embodiment 2

[0022] Such as figure 2 , 3 The pencil extension set shown in another embodiment includes a sleeve 11, a sleeve 12, a protrusion 2, a top core 31, a push rod 33 and a spring 32, the sleeve 12 is threaded with the sleeve 11, and the protrusion 2 is arranged on the sleeve. In 11, the protrusion 2 divides the sleeve 11 into two parts, the left and the right. There are six ribs 13 distributed on the inner wall of the left part. Spring 32, one end of the spring 32 is connected to the right end of the bump 2, and the other end is connected to the end surface of the push rod 33, the top core 31 is a T-shaped structure, the top core 31 is stuck on one side by the protrusion 2, and the rod of the top core 31 passes through The protrusion 2 is threadedly connected with one end of the push rod 33 , and the other end of the push rod 33 protrudes out of the casing 12 .

[0023] When in use, the tail end of the pencil is nested in the sleeve 11 with six ribs 13. When the pencil is too sh...

Embodiment 3

[0025] Such as figure 2 , 4 The pencil extension sleeve shown in another embodiment includes a sleeve 1 with six ribs 13 distributed on the circumference of the inner wall, a protrusion 2 and an ejection device 3, and the ejection device 3 includes a top core 31 and a stopper 34, and the protrusion 2 Set in the sleeve 1, the top core 31 is a T-shaped structure, the top core 31 is stuck on one side by the protrusion 2, and the rod portion of the top core 31 protrudes out of the sleeve 1 and is threadedly connected with the stopper 34.

[0026] During use, put the tail end of the pencil in the sleeve 1 with six ribs 13. When the pencil is too short to write, press the stopper 34 to push the top core 31, so that the top core 31 pushes the pencil out.

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PUM

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Abstract

The invention discloses a pencil lengthening sleeve, which has a sleeve for being inlaid at the end of a pencil, the sleeve is internally provided with an ejection device which is used for ejecting the pencil and is provided with a top core for ejecting the pencil and a top rod for driving the top core to move, the sleeve is internally provided with a protrusion for preventing the ejection device from sliding out of the sleeve, the inner wall of the sleeve is circumferentially distributed with at least two ribs matching with the peripheral face of the pencil. The inventive pencil lengthening sleeve realizes that the half-used pencil does not end up being wasted so that the pencil can be utilized to the maximum extent, in addition, the pencil and the resources are saved.

Description

technical field [0001] The invention relates to a stationery, in particular to a pencil extension case. Background technique [0002] After children or primary school students use pencils, the tip of the pencil is often broken due to improper storage. When the pencil is half used, it is too short, and the correct posture of holding the pen cannot be obtained when writing, and the pencil core is prone to loosening. In case the short pencil is always discarded, causing waste. Contents of the invention [0003] The technical problem to be solved by the present invention is: in order to solve the above-mentioned shortcomings and deficiencies, a pencil extension sleeve is provided. [0004] In order to overcome the defects existing in the background technology, the technical solution adopted by the present invention to solve the technical problems is: a pencil extension sleeve, which has a sleeve for nesting at the end of the pencil, and a socket for pushing the pencil is arra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43K23/00B43K24/00
Inventor 李宗双
Owner 李宗双