CN201092178Y

CN201092178Y - Screw-thread driven auto-pencil

Info

Publication number: CN201092178Y
Application number: CNU2007201741035U
Authority: CN
Inventors: 张峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-21
Filing date: 2007-09-21
Publication date: 2008-07-30
Anticipated expiration: 2017-09-21

Abstract

The back end of a pen holder is connected with a rotary sleeve via an adapter cylinder, the adapter cylinder has stationary fit with the pen holder, the end of the pen holder is provided with a projection, a fixing ring is arranged between the end of the pen holder and the rotary sleeve, the fixing ring is provided with a cut, the middle of the fixing ring is provided with an upper and a lower rectangle hole in arc shape, the cut of the fixing ring is clamped with the projection on the end of the pen holder, the rotary sleeve can rotate and is provided with an internal screw, the pen holder is provided with a propelling rod which section is a rectangle with arc upper and lower, the body of the propelling rod is provided with an external screw, while the body can be through the fixing ring to be connected with the internal screw of the rotary sleeve. When in use, user rotates the rotary sleeve to drive the propelling rod via screws, under the limitation of the fixing ring, the propelling rod can not rotate and only move front and back to move the core. The utility mode has simple structure, beautiful appearance, small volume and portable property, which can use variable pen cores to utilize pen core most, reduce wood consumption and protect environment.

Description

Screw thread driving propelling pencil

Technical field

The utility model relates to writing implement, relates in particular to a kind of by screw device feeding pen core and propelling pencil that independent residue pen core knock-pin is arranged.

Background technology

Pencil is the writing implement of using always, and its penholder generally all is to use the timber manufacturing, needs to consume a large amount of timber.For saving timber, people have invented propelling pencil.Existing propelling pencil has push type and rotary two kinds, and structure is more complicated all, and the pen core specification is single, uses inconvenient.

In order to overcome the problems referred to above, people have done many technological inventions, as Chinese patent ZL 01273630.9 " propelling pencil ", Chinese patent ZL 200520135650.3 " reusable pencil ", Chinese patent ZL 01277661.0 " a kind of rotary propelling pencil " etc. have its advantage and deficiency separately.

Summary of the invention

In order to overcome the problem that existing propelling pencil exists, the purpose of this utility model provides a kind of screw thread driving from starting writing, and it is to promote the propelling pencil that knock-pin is regulated the pen core extension elongation by screw thread.

To achieve these goals, the technical solution of the utility model is as follows:

A kind of screw thread driving propelling pencil, comprise pen core, nib, penholder, the rear end that it is characterized in that penholder is by connecting cylinder and pullover connection of rotation, connecting cylinder and penholder are stationary fit, and there is projection the penholder termination, between penholder termination and rotation are pullover, be separated with retainer ring, retainer ring has notch on the limit, and it is circular-arc oblong aperture up and down that the retainer ring middle part has, and the projection of the notch on retainer ring limit and penholder termination interlocks; Rotate pullover and the connecting cylinder matched in clearance, rotate pullover can the rotation, rotate the pullover internal thread that has; Pushing ram is arranged in the penholder, and pushing ram one end is a round end, and pushing ram shaft section is up and down and is circular-arc rectangle, and the pushing ram shaft has external screw thread, the pushing ram shaft can pass the retainer ring middle part up and down for circular-arc oblong aperture with rotate pullover internal thread and connect.During use, pen core is injected nib, push up mutually with the round end portion of pushing ram the rear end of pen core, and it is pullover to reverse rotation, drives pushing ram by screw thread, because the restriction of retainer ring, pushing ram can not rotate, and can only move forward and backward, and regulates the pen core activity with this.After pen core used a period of time, pen core shortened, and pushing ram and pen core can not join, and can add with residue pen core knock-pin, and with remaining pen core knock-pin top pen core again, a residue pen core knock-pin is not enough, available two residue pen core knock-pins.

The utility model is simple in structure, good looking appearance, and volume is little, and is easy to carry, can use the plurality of specifications pen core, can maximally utilise pen core, reduces the consumption of timber, and the tool environment protection significance is liked by different crowd deeply.

Description of drawings

Below in conjunction with accompanying drawing the utility model is elaborated.

Fig. 1 is the utility model structural representation;

Fig. 2 is the A-A profile;

Fig. 3 is the pushing ram schematic diagram;

Fig. 4 is that B is to view;

Among each figure: 1 is pullover for rotation, and 2 is retainer ring, and 3 is connecting cylinder, and 4 is penholder, and 5 are residue pen core knock-pin, and 6 is pen core, and 7 is nib, and 8 is the pen core damped ring, and 9 is pushing ram.

The specific embodiment

Embodiment

As shown in Figure 1, a kind of screw thread driving propelling pencil, comprise pen core 6, nib 7, penholder 4, the rear end that it is characterized in that penholder 4 is connected with rotation pullover 1 by connecting cylinder 3, connecting cylinder 3 is stationary fit with penholder 4, as shown in Figure 2, there is projection penholder 4 terminations, between penholder 4 terminations and the rotation pullover 1, be separated with retainer ring 2, there is notch on retainer ring 2 limits, and it is circular-arc oblong aperture up and down that retainer ring 2 middle parts have, and the projection of the notch on retainer ring 2 limits and penholder 4 terminations interlocks, make retainer ring 2 not rotatable, rotate pullover 1 with connecting cylinder 3 matched in clearance, rotate pullover 1 and can rotate, rotating pullover 1 has internal thread; Pushing ram 9 is arranged in the penholder 4, as shown in Figure 3, Figure 4, pushing ram 9 one ends are round end, and it is up and down circular-arc rectangle that pushing ram 9 shaft sections are, pushing ram 9 shafts have external screw thread, and pushing ram 9 shafts can pass retainer ring 2 middle parts and be the thread connection of circular-arc oblong aperture with rotation pullover 1 up and down.During use, pen core 6 is injected nib 7, push up mutually with the round end portion of pushing ram 9 rear end of pen core 6, and it is pullover 1 to reverse rotation, drives pushing ram 9 by screw thread, and owing to the restriction of retainer ring 2, pushing ram 9 can not rotate, and can only move forward and backward, and regulates pen core 6 activities with this.After pen core uses a period of time, pen core 6 shortens, pushing ram 9 can not join with pen core 6, can add with residue pen core knock-

5,6, residues of top pen core pen core knock-pin 5 is not enough again with residue pen core knock-pin 5, available two residue pen core knock-pins 5, pen core 6 is movable to pen core damped ring 8, can improve the utilization rate of pen core 6 to greatest extent.

It is pullover 1 to reverse rotation for convenience, reverses pullover 1 outer surface of rotation and makes annular knurl shape.

Claims

1. screw thread driving propelling pencil, comprise pen core (6), nib (7), penholder (4), the rear end that it is characterized in that penholder (4) is connected with rotation pullover (1) by connecting cylinder (3), and connecting cylinder (3) is stationary fit with penholder (4), and there is projection penholder (4) termination; Between penholder (4) termination and the rotation pullover (1), be separated with retainer ring (2), retainer ring (2) has notch on the limit, and it is circular-arc oblong aperture up and down that retainer ring (2) middle part has, and the projection of the notch on retainer ring (2) limit and penholder (4) termination interlocks; Rotate pullover (1) and connecting cylinder (3) matched in clearance, rotate pullover (1) and can rotate, rotating pullover (1) has internal thread; Pushing ram (9) is arranged in the penholder (4), pushing ram (9) one ends are round end, it is up and down circular-arc rectangle that pushing ram (9) shaft section is, pushing ram (9) shaft has external screw thread, and pushing ram (9) shaft can pass retainer ring (2) middle part and connect for the internal thread of circular-arc oblong aperture with rotation pullover (1) up and down.

2. according to claim 1 screw thread driving propelling pencil, its feature becomes annular knurl shape at described rotation pullover (1) outer surface.