JP2010194787A - Marking pen - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a marking pen with such flexible writing feeling as that of a fountain pen, and capable of obtaining soft writing feeling. <P>SOLUTION: This marking pen has an ink tank 1 and a cap 2, a coil-like object 6 such as a spring is attached to the periphery of a pen core 5, and a guide member 8 for protecting the spring is attached to the periphery of the coil-like object 6. Marking pen structure having a pen point allowing writing bowingly is provided by a projected dimension of the pen core 5 from the guide member 8 and by using an elastic force of the spring 6. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention mainly relates to a marking pen having a felt or plastic nib.

The marking pen has a feature that allows writing regardless of the nature of the writing object such as paper, plastic, glass, etc., because the pen core on the pen tip is pressed against the writing object and the drawn line is written.
However, due to such a feature of pressing and writing, the pen core has problems such as wear, easy crushing, and difficulty in obtaining a soft and smooth writing taste.
In order to obtain a soft and smooth writing feel, it is desirable to use a soft material for the pen core, or to make the pen core itself moderate, but it has the disadvantage of reducing the durability of the pen core itself. was there.

In order to solve the above-mentioned problems, a pen core (Patent Document 1) that obtains a soft writing feel while obtaining the rigidity of the pen core by inserting a needle-like object into the center of the pen core or synthesized around the pen core A writing instrument (Patent Document 2) to which a holder of a resin or rubber elastic material is attached is disclosed.

JP 63-25100 A JP 2005-131943 A

However, in the above-mentioned Patent Document 1, since there is only one needle-like object, the elastic force of the needle-like object decreases as it is written several times, and the plastic core is deformed. It is difficult to keep writing. Further, in the case of a pen core having an ink flow path at the center, there is a problem that the flow of ink is reduced due to a needle-like object blocking the flow path.
On the other hand, in Patent Document 2, the holder made of a synthetic resin or a rubber elastic material takes a thin shape as it goes to the pen tip and covers the core, and adjusts the writing quality by deformation of the core, The holder serves to hold the deformation of the core. For this reason, since the deformation of the core is repeated by repeatedly writing, there is a problem in that the durability of the nib is lowered.

Therefore, the present inventors have obtained the following invention as a result of intensive development.
In a marking pen composed of a writing pen tip having a pen core, a cap that is detachably fitted to cover the pen tip, and a shaft body, the pen tip whose outer peripheral surface is covered with a coiled object It is a marking pen. By covering the outer peripheral surface of the pen core with a coiled object, the pen core can be restored to the original pen core state even after writing.

Further, the present invention is characterized in that the outer peripheral surface of the coiled object is a marking pen having a guide member formed thereon. By forming the guide member, it is possible to adjust the bending condition of the pen core, and it is possible to cope with various writing sensations of the user.

Furthermore, the coiled object is a marking pen which is a spring. Since it is a spring, it can be easily restored even if it is made perpendicular to the length direction of the pen core.

Further, the present invention is characterized in that the marking pen is in close contact between the coils of the coiled object. The close contact between the coils of the coiled object indicates a fully compressed spring or the like, but the close contact between the coils reduces the damage to the pen core during restoration after writing with a pen core. It is possible.

Furthermore, the outer peripheral surface of the coiled object is a marking pen that is substantially parallel to the outer peripheral surface of the pen core. Unlike the prior art, the outer periphery of the coiled object and the pen core can be made substantially parallel so that the pen core can be easily restored after it has been written.

  While maintaining the durability of the nib, you can get a writing feel like a fountain pen. By adjusting the amount of protrusion between the pen core and the coiled object, the bending condition of the pen core changes, so the writing quality can be adjusted. Since the pen tip does not break even when writing pressure is applied, it is possible to handle the writing pressure and writing angle of various users. Further, by using the guide member, it is possible to further facilitate the adjustment of the desired writing quality.

It is a whole marking pen figure in the 1st example of the present invention. It is an enlarged view of the nib in the 1st example of the present invention. It is an enlarged view of the nib which lengthened the projected dimension of the coil-like object from the joint front in the 1st example of the present invention. It is an enlarged view of the nib which shortened the protruding dimension of the coil-like object from the joint front in the 1st example of the present invention. It is an enlarged view of the nib which formed the crevice between each coil of the coiled object in the 1st example of the present invention. It is an enlarged view of the nib which made the coil wire diameter of the coiled object thick in the 1st example of the present invention. It is a marking pen whole figure in the 2nd example of the present invention. It is an enlarged view of the pen tip in the 2nd example of the present invention.

  This will be described with reference to the drawings. In this embodiment, the front side is the side where the cap or pen core is located, and the rear side is the side where the ink or ink tank is located.

FIG. 1 is an overall view of a first embodiment in an embodiment of the present invention. This is a marking pen in which a pen core 5 and a joint 7 are attached to an ink tank 1 and the pen core 5 is covered with a cap 2. The present embodiment is a very common marking pen in which a batting 3 into which existing ink is soaked is accommodated in the ink tank 1 and ink leakage and the batting 3 and the pen core 5 are prevented from being removed by the tail plug 4. Even if the ink stored in the ink tank 1 is not soaked in the batting 3, there is no problem as long as it is a marking pen in which liquid ink is directly contained in the ink tank.

The cap 2 prevents the pen core 5 from drying. The cap 2 is a very commonly used marking pen cap, and a protrusion is formed on the outer peripheral portion of the ink tank 1 and the inner peripheral portion of the cap 2, and the pen core 5 is dried and dropped when not in use. To protect against damage

FIG. 2 is an enlarged view showing the front of FIG. 1 in detail. On the rear side of the pen core 5, a core rear end surface 11 is formed, and the diameter increases in a tapered manner toward the front side. By making the tip of the core rear end face 11 thinner, insertion with the batting 3 is facilitated. On the front side, a core front end surface 12 having a curved tip is formed, and becomes thicker in a taper shape through a slight straight portion as it advances backward. If the shape has such a curved surface and is tapered, smooth writing can be obtained. A coiled object 6 is disposed around the front of the pen core 5 and is fixed to the joint 7 by a fixing portion 13 of the joint 7 at an almost intermediate position, and the core rear end face 11 is inserted into the batting 3. By immersing the ink in the batting 3, the ink is transmitted to the front end face 12 by capillary action and can be written. As the material of the pen core 5, PEEK (polyether ether ketone), polyacetal, polypropylene, polyvinylidene fluoride, or the like, which is a pen core of a general marking pen, is used. The outer diameter of the pen core is preferably between 0.4 mm and 1.5 mm. This is because if the length is less than 0.4 mm, it is difficult to repeatedly return the bending, and if it is 1.5 mm or more, a certain effect cannot be obtained.

The coiled object 6 is disposed around the pen core 5, and the core front end surface 12 is projected, and the coil receiver 14 is disposed from a slightly rear side to the coil receiver 14 that is stepped of the joint 7. The coiled object 6 refers to an object in which a plurality of rings are continuously formed using a metal or resin wire or a thin plate, generally a spring, a spring, or the like. In this embodiment, the coiled object 6 uses a fully-compressed spring that can be easily restored even if it is bent together with the pen core 5. By using a spring, it is possible to obtain a larger bend than in the case of an elastic material such as rubber, and since the restoring force is high, it is possible to cope with the writing pressure and writing angle of various users.

  The joint 7 fixes the pen core 5 and the coiled object 6 and is fitted to the ink tank 1. The joint 7 has a bowl-like appearance, and has a hole 15 penetrating the pen core 5 in the center and a stepped coil receiver 14 in the middle of the hole 15. A fitting portion 16 that fits with the ink tank 1 is formed on the outer peripheral portion on the rear side. A chamfer 18 is formed around the joint front end surface 17 of the hole 15 so that the pen core 5 and the coiled object 6 can be easily inserted. By forming the chamfered portion 18, the wire rod of the coiled object 6 is not caught on the end face of the hole 17 even when writing with a pen core, so that it can return to the original position smoothly. The coil receiver 14 of the joint 7 has a function of regulating and fixing the rear end portion of the coiled object 6 when the coiled object 6 is inserted. A fixing portion 13 having a diameter smaller than the hole 15 of the joint is formed on the rear side of the coil receiver 14 and has a role of fixing the pen core 5 so as not to be detached from the joint 7. The joint 7, the pen core 5, and the coiled object 6 are fixed by press-fitting the joint 7 and the pen core 5 at the fixing portion 13. By fixing, the pen core 5 is prevented from loosening, and the outflow property of ink at the time of writing is improved. The joint 7 and the coiled object 6 are fixed by press fitting or adhesion at the coil receiver 14. The length to be fixed is not particularly limited as long as the pen core 5 and the coiled object 6 are not detached from the joint 7 after the pen core 5 is inserted, but both should be fixed within the hole 15 up to the joint front end face 17 at the longest. Is desirable. If each can be fixed, the pen core 5, the coiled object 6, and the joint 7 may have gaps in the holes 15. The length of the pen core 5 and the coiled object 6 projecting from the joint front end surface 17 is not particularly specified because it can be projected as long as the bending at the time of writing can be obtained.

FIG. 3 is an enlarged view of the pen tip in a form in which the protruding dimension of the coiled object 6 from the joint front end face 17 is increased. Compared with FIG. 2, the protruding dimension of the pen core 5 from the front end surface of the coiled object 6 is shorter.

FIG. 4 is an enlarged view of the pen tip in a form in which the protruding dimension of the coiled object 6 from the joint front end surface 17 is increased. Compared with FIG. 2, the protruding dimension of the pen core 5 from the front end surface of the coiled object 6 is longer. 2 to 4, the length of the pen core 5 protruding from the coiled object 6 is 1 to 3 mm, and 1.5 mm is desirable in consideration of the reduction of the protruding length due to wear during writing.

  FIG. 5 shows a state where a gap is formed between the coils of the coiled object 6. Even if a gap is formed between the coils, the return force of the coiled object is sufficiently obtained, so even if it is written with a pen core, it can be restored to its original position after writing. .

FIG. 6 shows a form in which the wire diameter of the coiled object 6 is increased.
The wire diameter of the coil is preferably 0.1 mm to 0.6 mm. If it is less than 0.1 mm, the elastic force is weak, so even if it is written, it cannot return to its original position, and if it is 0.6 mm or more, it will not bend, so a supple writing will not be obtained.

  FIG. 7 is an overall view of a marking pen according to the second embodiment. The difference from the first embodiment is that the guide member 8 is arranged on the outer periphery of the coiled object 6. Except for the arrangement of the guide member 8, the configuration is the same as that of the first embodiment.

FIG. 8 is an enlarged view showing the front of FIG. 7 in detail. The joint 7 can be protected by arranging the guide member 8. The guide member 8 is attached to the hole 15 of the joint 7 by press fitting or the like. If the guide member 8 directly protects the pen lead 5, there is a possibility that the pen lead 5 will break if the pen lead 5 is bent and written. In the present embodiment, the pen core 5 can be prevented from breaking by arranging the coiled object 6 in the middle.

  INDUSTRIAL APPLICABILITY The present invention is an industrially effective marking that can respond to any writing pressure of a user and provide an unprecedented writing quality of a marking pen by forming a coiled object and a guide member on a pen core It is a pen.

1 Ink tank 2 Cap 3 Filling 4 Tail plug 5 Pen core 6 Coiled object (spring)
7 Joint 8 Guide member 11 Core rear end surface 12 Core front end surface 13 Fixed portion 14 Coil receiver 15 Hole 16 Fitting portion 17 Joint front end surface 18 Chamfered portion

Claims (5)

A marking pen comprising a pen tip having a pen core, a cap that is detachably fitted so as to cover the pen tip, and a shaft body, the pen tip having a pen tip whose outer peripheral surface is covered with a coiled object Marking pen. The marking pen according to claim 1, wherein a guide member is formed on an outer peripheral surface of the coiled object. The marking pen according to claim 1, wherein the coiled object is a spring. The marking pen according to claim 1, wherein the coils of the coiled object are in close contact with each other. The marking pen according to claim 1, wherein an outer peripheral surface of the coiled object is substantially parallel to an outer peripheral surface of the pen core.

Images