CN202337108U

CN202337108U - Extensible pencil

Info

Publication number: CN202337108U
Application number: CN2011204809869U
Authority: CN
Inventors: 韩爱国
Original assignee: WENZHOU TIANJIAO PEN INDUSTRY Co Ltd
Current assignee: WENZHOU TIANJIAO PEN INDUSTRY Co Ltd
Priority date: 2011-11-28
Filing date: 2011-11-28
Publication date: 2012-07-18
Anticipated expiration: 2021-11-28

Abstract

The utility model discloses an extensible pencil, and aims at providing the extensible pencil which is free of being sharpened. The technical scheme of the utility model is as follows: the extensible pencil comprises a pencil holder, wherein one end of the pencil holder is provided with a pencil point sleeve, the other end of the pencil holder is provided with a pencil tail end, the pencil tail end comprises an extension part which is matched with the inner wall of the pencil holder and a holding part which is used for rotationally moving and is exposed out of the pencil holder, the inner wall of the pencil holder is integrally provided with a thread, the extension part of the pencil tail end, arranged at the inner part of the pencil holder, is cooperatively provided with a movable screw which is matched with the thread at the inner wall of the pencil holder and can rotationally move along the thread at the inner wall of the pencil holder, a pencil lead is arranged inside the pencil holder, and the movable screw is provided with a screw groove which is used for clamping the pencil lead. The extensible pencil disclosed by the utility model has the advantages that since the thread is directly arranged on a pencil shell, the structure is simpler, the assembly is ensured to be more convenient, the performance is more reliable, a shell is free of being cut away, and the extensible pencil is convenient and more economic to use.

Description

Extensible pencil

Technical field

The utility model relates to a kind of pen, and more particularly, it relates to a kind of extensible pencil that can exempt to cut.

Background technology

The long-term pencil that uses of people is replaced by the extensible pencil that can exempt to cut owing to want shortcoming such as the timber of labor, the trouble that sharpens a pencil gradually.The extensible pencil that can exempt to cut owing to can write for a long time, easy to use, meet environmental protection concept and be widely used.Extensible pencil has in the market generally comprised a shell; Interior pipe, connector, interior base, chuck, locking strap that shell is inner, the upper end of connector and interior pipe socket-connect, and the lower end and the chuck of connector socket-connect; Be provided with spring between connector and the interior base; Be with locking strap between chuck and the interior base, the lower outside wall of locking strap is provided with boss, the lower surface of base in the boss of locking strap is stuck in; The outside of interior base is provided with and the suitable external screw thread of the internal thread of outer tube; When the external screw thread for core matched fixedly with the internal thread of outer tube, the lower surface of base and outer tube madial wall kept certain distance in must making, and promptly the lower surface of interior base and outer tube madial wall keep certain knockout length.Said structure is too complicated, and cost of manufacture also can be higher comparatively speaking and be not easy to control necessary knockout situation.

Summary of the invention

To the deficiency that prior art exists, the purpose of the utility model is to provide the extensible pencil that a kind of structure is simple more, use is convenient, cost of manufacture is practiced thrift more.

For realizing above-mentioned purpose; The utility model provides following technical scheme: a kind of extensible pencil, comprise penholder, and penholder one end is provided with pen cap; The other end is provided with a tail; Said tail include with the suitable extension of penholder inwall be used to revolve move be placed on the outside handle part of penholder, said penholder inwall has been wholely set screw thread, the inner tail extension of said penholder is equipped with suitable and can revolve the mobile screw that moves along the screw thread of penholder inwall with the screw thread of penholder inwall.

Through adopting technique scheme; Screw handle part and drive the extension rotation; The mobile screw that is equipped with extension just can move along the screw thread rotation of penholder inwall; Screw thread is directly arranged on the penholder, makes that structure is simpler, more convenient, the more reliable performance, more convenient to use of assembling, also practices thrift cost of manufacture simultaneously.

The utility model further is set to: said penholder inside is provided with pen core, and said mobile screw is provided with the screw flutes that is used for the clamping pen core.

Through adopting technique scheme, be positioned over pen core on the screw flutes, more stable during use, be not prone to the situation that pen core rocks.

The utility model further is set to: an end of inner relative the tail of said penholder is provided with the penholder groove of annular, and the extension of said tail and penholder groove relevant position are provided with projection, the setting that is slidingly matched of projection and penholder groove.

Through adopting technique scheme, it is more stable to make that mobile screw rotates.

The utility model further is set to: the inner end of pen cap relatively of said penholder is provided with positive stop lug boss.

Through adopting technique scheme, mobile screw has been played position-limiting action, mobile screw can not screwed out outside the screw thread of penholder inwall, avoid pen is caused damage.

Description of drawings

Fig. 1 is the structural representation of the utility model extensible pencil embodiment;

Fig. 2 is the A portion enlarged drawing of Fig. 1.

The specific embodiment

With reference to Fig. 1 the utility model extensible pencil embodiment is further specified.

A kind of extensible pencil comprises penholder 1, and penholder 1 one ends are provided with pen cap 2; The other end is provided with a tail 3, and (what need explain is that penholder 1, pen cap 2 and a tail 3 also can be the integral type setting, are easy disassembly here; Present embodiment is preferred, and penholder 1, pen cap 2 and a tail 3 removably connect), said tail 3 includes that (what need explain is with being used to revolve the penholder 1 outside handle part 32 that is placed on that moves with the suitable extension 31 of penholder 1 inwall here; Described handle part 32 can with extension 31 setting that removably is connected, for making the better effects if of interlock, present embodiment is preferred; Handle part 32 is wholely set with extension 31); Said penholder 1 inwall be wholely set screw thread 11 (what need explain is here, and one section screw thread 11 can be set on penholder 1, for the back-out length that makes pen core 5 longer; The utilization ratio of pen core 5 is higher; Present embodiment is preferred, and screw thread 11 runs through whole penholder 1), said penholder 1 an inner tail extension 31 is equipped with suitable and can revolve the mobile screw 4 that moves along the screw thread 11 of penholder 1 inwall (what need explain is with the screw thread of penholder 1 inwall 11 here; The extension 31 of tail 3 can also be the helicoidal structure of band groove or the arcuate structure that other radians also do not limit; For making mobile screw 4 cooperate rotation the time can rotate more steadily with penholder 1, present embodiment is preferred, and said extension 31 is 1/3rd the tubular structure settings suitable with penholder 1).

Said penholder 1 inside is provided with pen core 5; Said mobile screw 4 is provided with the screw flutes 41 that is used for clamping pen core 5, and (what need explain is here; Pen core 5 can directly place on the extension 31 of a tail 3, and mobile screw 4 is conflicted with pen core 5 and is provided with, and can stablize, not be prone to the situation of rocking in use more for making pen core 5; Present embodiment is preferred, and pen core 5 places in the screw flutes 41).

One end of said penholder 1 inner relative tail 3 is provided with the penholder groove 12 of annular; The extension 31 and penholder groove 12 relevant positions of said tail 3 are provided with projection 33; Settings that be slidingly matched of projection 33 and penholder groove 12, an end of said penholder 1 inner relative pen cap 2 is provided with positive stop lug boss 13.

During use, rotation handle part 32 drives screw thread 11 rotations of mobile screw 4 around penholder 1 inwall, and pen core 5 is able to screw out, thereby writing work is able to continue.Simple in structure, the course of work of whole pencil conveniently, have also reduced cost of manufacture.

Claims

1. extensible pencil; Comprise penholder; Penholder one end is provided with pen cap, and the other end is provided with a tail, it is characterized in that: said tail include with the suitable extension of penholder inwall be used to revolve move be placed on the outside handle part of penholder; Said penholder inwall has been wholely set screw thread, and the inner tail extension of said penholder is equipped with suitable and can revolve the mobile screw that moves along the screw thread of penholder inwall with the screw thread of penholder inwall.

2. extensible pencil according to claim 1 is characterized in that: said penholder inside is provided with pen core, and said mobile screw is provided with the screw flutes that is used for the clamping pen core.

3. extensible pencil according to claim 1 and 2 is characterized in that: an end of inner relative the tail of said penholder is provided with the penholder groove of annular, and the extension of said tail and penholder groove relevant position are provided with projection, the setting that is slidingly matched of projection and penholder groove.

4. extensible pencil according to claim 1 and 2 is characterized in that: the inner end of pen cap relatively of said penholder is provided with positive stop lug boss.