CN2723210Y

CN2723210Y - Ball pen

Info

Publication number: CN2723210Y
Application number: CN 200420052913
Authority: CN
Inventors: 张春涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-08-10
Filing date: 2004-08-10
Publication date: 2005-09-07
Anticipated expiration: 2014-08-10

Abstract

The utility model relates to a writing ball-pen of stationery, compising a penholder and a pen-core. The modified penholder is in addition provided with a guide-tube sheathed with the pen-core, and the guide-tube is connected with the pen-core through a spring. The pen-core is floating in the penholder. The writing strength on the pen-core is balanced by the spring force; when the outside force is greater than the writing strength, the pen-core can draw back into the penholder to protect the pen-core from damage.

Description

Ball pen

Technical field:

The utility model relates to a kind of cultural goods.Be specially the ball pen of writing usefulness.

Technical background:

Ball pen is formed by penholder with at the pen core that the penholder inner chamber fixedly is equipped with.The front end of pen core is a nib, does and writes usefulness.Nib is the cone of a tiny hollow, inlay a little ball in it, friction when writing between little ball and the writing paper is rotated it in the cone of hollow, the color oil of cone cavity is taken out of, demonstrating person's handwriting. pen core is fixed in the inner chamber of penholder, a kind of is directly fixing, the centre does not have the 3rd part, another kind of indirect securement is to install a spring between penholder and pen core additional, and this spring plays under the effect of control button pen core is stretched out or retraction by the penholder inner chamber, in case stretch out or retraction penholder and pen core between be rigid attachment, when nib was under pressure, penholder can not produce displacement relatively, so conveniently writes.So just characteristics have just been brought a defective, scratch on writing paper when children use, or overexert, and impel the little ball on the nib stressed excessive, the cone distortion, and little ball can not contact writing paper, and whole ball pen scrapped.Sometimes the user is careless, and nib falls downwards on the ground, also is to make nib stressed excessive, and ball pen is scrapped, and causes waste.

Summary of the invention:

The purpose of this utility model be exactly the ball pen that will overcome present use in the inner chamber of penholder, be rigid attachment with penholder, nib is impacted, the defective that whole ball pen damaged.

The penholder inner chamber of finishing technical solutions of the utility model and being at existing ball pen increases a conduit, and pen core is through on the conduit, connects the spring that a minimum workload equals the power of writing between conduit and the pen core.Difference from prior art is not adorn on the spring control knob; connect by spring between pen core and the conduit; when pen core is write and penholder relatively stable be that minimum workload by spring guarantees; the power that is subjected to when nib is when writing power; nib will produce displacement retraction penholder, when external force disappears, under the effect of spring; pen core returns to writing position, has reached the purpose that the protection nib is not damaged.

Spring can be the compression spring, this moment ball pen the catheter cartridge that installs of penholder inner chamber at the afterbody of penholder, spring is contained in the conduit, withstands on the pen core, the pen core afterbody is in conduit.

Spring can be an extension spring, this moment ball pen the conduit that installs of penholder inner chamber, be contained in the front end of penholder, pen core passes conduit, both ends of the spring is pulled in the tail end of conduit and pen core respectively.

The drawing explanation

The ball pen of Fig. 1-be equipped with compression spring

Fig. 2-be equipped with ball pen of extension spring

Now propose the simplest better embodiment of two examples, utility model is described further.

Embodiment 1,

Tail end at penholder 1 has fixedly mounted conduit 3, and conduit 3 is through holes, and front end adds an end cover 8, an effect is the fairlead of pen core 2, next is a fixing spring seat 5, the compression spring 4 in conduit 3, and spring base 5 usefulness end sockets 6 are enclosed in the conduit 3, and withstand on the afterbody of pen core 2, the penholder head has the nut of a tapered hollow that pen core is enclosed in the penholder chamber, and nib is exposed, and the penholder rear end is sealed by bonnet 7, the structure of this and existing ball pen is identical, is prior art.The size of writing power is about about 0.3 kilogram, and the minimum workload of compression spring is 0.32 kilogram, and spring is a carbon spring steel wires, and diameter is 0.3 millimeter, and mean diameter of coil is 1.10 millimeter, and number of active coils is 10 circles.It is 14 circles that two ends polish number of total coils, and total length is 30 millimeters.The external force that is subjected to when nib is when writing power, and the pen core extrusion spring makes them in end cover 8 retraction conduits 3, has protected nib not damage.After external force disappears, under the effect of compression spring 4, eject penholder for writing use.

Embodiment 2

Front end fixed installation conduit 3 at penholder 1, overlap 8 one at each installation end of the two ends of conduit 3, pen core 2 passes the conduit 3 of band edge cover 8, end cover 8 ends with extension spring 4 in conduit 3 rear ends are fixed on the conduit 3, the other end of extension spring 4 is pulled in the tail end of pen core 2 with a steady pin 9 with holes, spring is enclosed within on the body of pen core in the outside of conduit.The pulling force of spring 4 makes pen core that a power of stretching out penholder is arranged all the time, and the front end of penholder has a tapered cup nut same as the prior art spacing, and pen core has only nib to extend, and seal with bonnet 7 the penholder back.Retraction penholder when nib is subjected to external force greater than the power of writing, external force disappears, and stretches out again under the effect of spring.The steel wire of extension spring is a carbon spring steel wires, and diameter is 0.3 millimeter, and mean diameter of coil is 1.15 millimeters, and number of active coils is 14 circles, and 7 millimeters of drifts add that the two ends hook ring is 20 millimeters.

So far implement to finish, reached the purpose of this utility model.

Claims

1, a kind ofly at the penholder inner chamber ball pen of pen core is housed, it is characterized in that the penholder inner chamber is fixed with a conduit, pen core is through on the conduit, connects the spring that a minimum workload equals the power of writing between conduit and the pen core.

2, the ball pen of narrating according to claim 1 is characterized in that spring is the compression spring, and catheter cartridge is at the afterbody of penholder inner chamber, and spring is contained in the conduit, withstands on the pen core.

3, the ball pen of narrating according to claim 1 is characterized in that spring is an extension spring, and catheter cartridge is at penholder inner chamber front end, and pen core passes conduit, and both ends of the spring is pulled in the tail end of conduit and pen core respectively.