CN201084109Y

CN201084109Y - Collapsible writing pencils jointing construction

Info

Publication number: CN201084109Y
Application number: CNU2007200469024U
Authority: CN
Inventors: 余春杨; 辛锋
Original assignee: Mitac Precision Technology Kunshan Ltd
Current assignee: Mitac Precision Technology Kunshan Ltd
Priority date: 2007-08-29
Filing date: 2007-08-29
Publication date: 2008-07-09
Anticipated expiration: 2017-08-29

Abstract

The utility model discloses a connecting structure of and telescopic writing pen, comprising a barrel, a cylinder and two or a plurality of arc sheets; wherein, a taper which makes the inner diameter of the tail end of barrel is less than the inner diameter of front end of the barrel is arranged at the tail end of the barrel; the external diameter of the cylinder is less than the inner diameter of the tail end of the barrel, a groove around the cylinder is arranged near the front end of the cylinder; the arc sheet group is spliced with the groove to form a whole circumference, the external diameter of the circumference is less than the inner diameter of the front end of the barrel while is larger than the inner diameter of the tail end of the barrel; in order to reduce the cost and the friction, the arc sheets are made of plastic materials. The utility model has the advantages that: the craft of the utility model is simple because the groove is cut on the cylinder surface during manufacturing, the combination of the arc sheets and the groove is more reliable than the combination of small holes and convex parts, furthermore, the arc sheet can be made of plastic materials, which can reduce the material cost and the friction during extraction.

Description

Telescopic writing pencil syndeton

[technical field]

The relevant a kind of syndeton of the utility model, particularly relevant a kind of telescopic writing pencil syndeton.

[background technology]

Flourishing day by day along with science and technology, when using electronic product, the convenience of people in order to import, it is more and more general to use writing pencil to import, and for the considering of space, can adopt the contraction type structure to reach this purpose.

For telescopic writing pencil syndeton, prior art sees also Fig. 1, and Fig. 1 illustrates the three-dimensional exploded view into the telescopic writing pencil of prior art, and this telescopic writing pencil comprises: a shaft of a writing brush 2, its tail end is a reducing 20, thereby makes the internal diameter of tail end less than the internal diameter of front end; One cylinder 3, the external diameter of this cylinder 3 are less than the shaft of a writing brush 2 tail end internal diameters, and cylinder 3 front end both sides all offer aperture 30, and this cylinder 3 is located in the shaft of a writing brush 2 from the shaft of a writing brush 2 front end sleeves by its tail end; Two metal arc plates 5, each metal arc plate 5 inboard all is provided with a salient point 50, and each salient point 50 is located in the above-mentioned aperture 30, and each metal arc plate 5 is attached at cylinder 3 surfaces by salient point provided thereon 50 and combining of aperture 30; One nib 1, it is installed on the shaft of a writing brush 2 front ends; A tail 4 which is provided with screw thread 40, and this tail 4 is located at cylinder 3 tail ends by screw thread 40.

Please consult Fig. 2 jointly, it illustrates the part assembling cut-away view into the telescopic writing pencil of prior art, because the external diameter of cylinder 3 is less than the internal diameter of the shaft of a writing brush 2 tail ends and front end, therefore can be easily the tail end cover of cylinder 3 be inserted in the shaft of a writing brush 2 and from the shaft of a writing brush 2 tail ends from the front end of the shaft of a writing brush 2 and stretch out, and the front end of cylinder 3 is owing to loaded onto metal arc plate 5, its external diameter less than the shaft of a writing brush 2 front inner diameter greater than the shaft of a writing brush 2 tail end internal diameters, so the front end of cylinder 3 can pass the shaft of a writing brush 2 front ends and backstop in the shaft of a writing brush 2 tail ends.Concrete assembling process is exactly earlier metal arc plate 5 to be installed on the cylinder 3, and the cylinder 3 that metal arc plate 5 will be installed inserts and stretches out cylinder 3 tail ends in the shafts of a writing brush 2 and from the shaft of a writing brush 2 tail ends, and then a tail 4 is installed and nib 1 is installed at cylinder 3 tail ends respectively at the shaft of a writing brush 2 front ends, and the external diameter of a tail 4 is greater than the shaft of a writing brush 2 tail end internal diameters, and the cylinder 3 after so can guaranteeing to install can not fallen into fully in the shaft of a writing brush 2 and be not easy to extract.Just can reach the scalability of writing pencil based on said structure.

Yet there is following point in the syndeton part for above-mentioned telescopic writing pencil: during manufacturing, bore aperture 30, complex process on cylinder 3; Use metal arc plate 5, material cost height in order to reach intensity; The shaft of a writing brush 2 generally also adopts metal, and so 2 frictions of the metal arc plate 5 and the shaft of a writing brush are big, and dependability is low, and if use lubricating oil increases use cost again.

In view of this, be necessary to develop a kind of telescopic writing pencil syndeton to address the above problem in fact.

[summary of the invention]

Therefore, the purpose of this utility model is to provide a kind of telescopic writing pencil syndeton, syndeton material cost height before solving, the big problem of friction when manufacturing process complexity and extraction.

For reaching above-mentioned purpose, telescopic writing pencil syndeton of the present utility model, this structure comprises:

One shaft of a writing brush, its tail end is a reducing, thereby makes the internal diameter of tail end less than the internal diameter of front end;

One cylinder, the external diameter of this cylinder are less than shaft of a writing brush tail end internal diameter, and cylinder offers one or several grooves around cylinder near front position;

Two or several arc-like sheets, these arc-like sheet groups are established and are spliced in above-mentioned groove and form a full circle week, and the external diameter of this circumference less than shaft of a writing brush front inner diameter greater than shaft of a writing brush tail end internal diameter.

Wherein, in order to reduce cost and to reduce friction, above-mentioned arc-like sheet adopts plastic material.

Compared to prior art, utilize telescopic writing pencil syndeton of the present utility model, when making, employing is at the damaged surface cutting flutes, the technology of this mode is simpler, and because the mode that the arc-like sheet that this structure adopts combines with groove is than the mode Stability Analysis of Structures of aperture salient point combination, so arc-like sheet can adopt plastic material and can reduce material cost and the friction when reducing to extract.

For the purpose of this utility model, structural attitude and function thereof are had further understanding, conjunction with figs. is described in detail as follows now:

[description of drawings]

Fig. 1 illustrates the three-dimensional exploded view into the telescopic writing pencil of prior art.

Fig. 2 illustrates the part assembling cut-away view into the telescopic writing pencil of prior art.

Fig. 3 illustrates the three-dimensional exploded view into telescopic writing pencil of the present utility model.

Fig. 4 illustrates the assembling cut-away view into telescopic writing pencil of the present utility model.

[embodiment]

Please consult Fig. 3, Fig. 4 jointly, it illustrates the assembling cut-away view of the three-dimensional exploded view into telescopic writing pencil of the present utility model, telescopic writing pencil of the present utility model respectively.

For reaching above-mentioned purpose, telescopic writing pencil syndeton of the present utility model, in present embodiment, this structure comprises: a shaft of a writing brush 200, its tail end are a reducing 201, thereby make the internal diameter of tail end less than the internal diameter of front end; One cylinder 300, the external diameter of this cylinder 300 are less than the shaft of a writing brush 200 tail end internal diameters, and cylinder 300 close front positions offer the groove 301 around cylinder 300; Three arc-like sheets 500, these arc-like sheets are established for 500 groups and are spliced in above-mentioned groove 301 and form a full circle week, and the external diameter of this circumference less than the shaft of a writing brush 200 front inner diameter greater than the shaft of a writing brush 200 tail end internal diameters.

And for the writing pencil that adopts above-mentioned syndeton, it also includes a nib 100, and it is installed on the shaft of a writing brush 200 front ends; A tail 400 which is provided with screw thread 401, and this tail 400 is located at cylinder 300 tail ends by screw thread 401.Because the external diameter of cylinder 300 is less than the internal diameter of the shaft of a writing brush 200 tail ends and front end, therefore can be easily the tail end cover of cylinder 300 be inserted in the shaft of a writing brush 200 and from the shaft of a writing brush 200 tail ends from the front end of the shaft of a writing brush 200 and stretch out, and the front end of cylinder 300 is owing to loaded onto arc-like sheet 500, the external diameter of its circumference that forms less than the shaft of a writing brush 200 front inner diameter greater than the shaft of a writing brush 200 tail end internal diameters, here be that arc-like sheet 500 is just movable in the shaft of a writing brush 200, the front end of cylinder 300 can pass the shaft of a writing brush 200 front ends and backstop in the shaft of a writing brush 200 tail ends.Concrete assembling process is exactly earlier arc-like sheet 500 to be installed on the cylinder 300, and the cylinder 300 that arc-like sheet 500 will be installed inserts and stretches out cylinder 300 tail ends in the shafts of a writing brush 200 and from the shaft of a writing brush 200 tail ends, and then a tail 400 is installed and nib 100 is installed at cylinder 300 tail ends respectively at the shaft of a writing brush 200 front ends, and the external diameter of a tail 400 is greater than the shaft of a writing brush 200 tail end internal diameters, and the cylinder 300 after so can guaranteeing to install can not fallen into fully in the shaft of a writing brush 200 and be not easy to extract.Just can reach the scalability of writing pencil based on said structure.

Wherein, in order to reduce cost and to reduce friction, above-mentioned arc-like sheet 500 adopts plastic material.

Utilize telescopic writing pencil syndeton of the present utility model, when making, employing is at cylinder 300 surfacing cut grooves 301, the technology of this mode is simpler, and because the mode that the arc-like sheet 500 that this structure adopts combines with groove 301 is than the mode Stability Analysis of Structures of prior art aperture 30 salient points 50 combinations, therefore arc-like sheet 500 can adopt plastic material, thereby can reduce material cost and the friction when reducing to extract.

Claims

1. telescopic writing pencil syndeton is characterized in that this structure comprises:

One cylinder, the external diameter of this cylinder are less than shaft of a writing brush tail end internal diameter, and the close front position of cylinder offers the groove around cylinder;

2. telescopic writing pencil syndeton as claimed in claim 1 is characterized in that, above-mentioned arc-like sheet adopts plastic material.

3. telescopic writing pencil syndeton as claimed in claim 1 is characterized in that the external diameter of above-mentioned circumference is just less than shaft of a writing brush front inner diameter.