JPS6228460Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a refill-type marking pen in which the pen body is recessed into the barrel when not writing.

For marking pens with a pen body protruding from the nib, in order to prevent ink from evaporating when not writing, the body of the cap or the open end of its inner cylinder should be kept in close contact with the nib to keep the pen body airtight. will be held. However, when you finish writing and put on the cap, the pen body comes into contact with the inside of the cap and ink gets stuck.
This often results in further adhesion to the tip. This may cause your fingertips to get dirty the next time you write.
In the case of oil-based ink, the ink adhering to this tip solidifies and becomes like adhesive, making it difficult to remove the cap. In addition, as a countermeasure to this problem, a short pen body is attached to the tip of the large outer diameter to make it difficult for the pen body to come into contact with the inner surface when the cap is attached.
However, this had the problem that when writing, the pen body was hidden behind the nib, making it difficult to write.

Therefore, the purpose of the present invention is to provide a marking pen that is easy to write on and that does not allow ink to adhere to the tip. is built into the shaft cylinder so as to be movable back and forth, and is provided with an annular kerf and a plurality of radial kerfs outward from the annular kerf, and has an outer diameter approximately equal to the inner diameter of the small diameter portion of the shaft cylinder. A locking member made of an elastic material having When fitted and attached to the barrel, the inner tube protruding inside the barrel will airtightly hold the pen body recessed into the barrel, and when it is fitted and attached to the tail end of the barrel when writing, the inner barrel will close to the barrel. The annular tip of the inner cylinder presses the locking member to advance the refil, and when the locking member passes through the inner stage, the tip of the inner cylinder enters the annular groove. The above-mentioned object is achieved by a refill-type marking pen comprising a cap that is inserted and the locking member bulges outward to be locked to the inner stage and the pen body to protrude from the opening at the tip of the barrel.

Embodiments of the present invention will be specifically described below with reference to the drawings.

The shaft cylinder 1 has a divided structure into a front shaft 1a and a rear shaft 1b, which are fitted into one body, and a cap 5 is fitted and attached to the front shaft 1a. The rear end of the rear shaft 1b has the same outer diameter as the front shaft 1a,
During writing, a cap 5 is fitted and attached here, and a through hole 13 is provided protruding from the tail end surface, and an inner step 12 with a small diameter portion 11 at the rear is provided. This inner stage 12 is for locking a locking member 7, which will be described later, and has a somewhat tapered shape.
The main body of the refil 2 built into the shaft cylinder 1 consists of a large diameter part 2a and a medium diameter part 2b. A locking member 7 made of an elastic material is fixed to the rear end of the large diameter portion 2a, and the outer diameter of the locking member 7 is equal to the inner diameter of the small diameter portion 11.
It is adapted to abut against the tail end surface of the rear shaft 1a.
This locking member 7 has a cap 5 in the axial direction.
An annular kerf 7a having the same size as the inner cylinder 6, and a plurality of radial kerfs 7b on the outside of the annular kerf 7a.
is provided, and when the tip of the inner cylinder 6 of the cap 5 is inserted into the annular groove 7a, the locking member 7 bulges rearward as shown in FIG. A small-diameter tip 2c is connected to the tip of the medium diameter portion 2b, and a pen body 3 protrudes from the tip, and the pen body 3 is sufficiently large compared to the tip 2c. A spring 4 is interposed in each stepped portion of the shaft cylinder 1 and the refill 2, and the refill 2 is biased rearward by the spring 4.
Normally, the locking member 7 abuts against the tail end surface of the barrel 1, and the pen body 3 is recessed into the inner hole of the barrel 1. Next, the cap 5 is connected to the front shaft 1a and the rear shaft 1 as described above.
It has an inner hole to be fitted into the pen body 1, and an inner cylinder 6 is further provided protruding from the center of the inner part, and this inner cylinder 6 is designed to airtightly hold the pen body 3 recessed in the shaft cylinder 1. The inner circumferential surface of the opening is brought into close contact with the outer circumferential surface of the tip 2c. When the inner cylinder 6 is fitted and attached to the rear shaft 1b during writing, the inner cylinder 6 is inserted into the through hole 13, and its front end presses against the locking member 7. The tip shape of this inner cylinder 6 is the same as the annular cut groove 7a, but the locking member 7
is inscribed in the small diameter portion 11 of the shaft cylinder 1, so the refill 2 moves forward without the annular groove 7a expanding. When the locking member 7 passes through the inner stage 12, the inner diameter of the shaft cylinder 1 increases, so the inner cylinder 6 is inserted into the annular groove 7a, and the locking member 7 bulges outward and engages with the inner stage 12. be stopped. At this time, the pen body 3 is the barrel 1
It becomes possible to write more prominently. Even if the pen body 3 receives writing pressure, it can be received here because the locking member 7 is locked to the inner stage 12. Next, when writing is completed and the cap 5 is removed from the rear shaft 1b, the enlarged annular groove 7a returns to its original state, which, together with the fact that the inner stage 12 is slightly tapered, prevents the cap from being locked. Unraveled, LeFile 2 retreats. Then, the cap 5 is fitted and attached to the front shaft 1a, but since the pen body 3 is recessed into the barrel 1 and the inner surface of the open end of the cap 5 is fitted while being guided by the outer surface of the front shaft 1a, The pen body 3 does not come into contact with the inner surface of the cap 5 and ink does not adhere to it.

As explained above, in this invention, the pen body is held airtight by the inner cylinder of the cap, and it is made to protrude from the barrel only when writing, so that ink does not adhere to the inner surface of the cap when it is attached. Therefore, the pen body can be made larger relative to the nib, which has the advantage of making writing easier. Since the locking member is locked to the inner stage of the barrel, the pressure of the pen is received there, and the pen body does not accidentally sink into the pen.

[Brief explanation of the drawing]

Figures 1 and 2 are cross-sectional views of the embodiment of the present invention;
The figure shows a perspective view of the locking member, and FIGS. 4 and 5 similarly show cross-sectional views of the locking member. 1... Barrel, 2... Refill, 2c... Tip, 3... Pen body, 4... Spring, 5... Cap, 6... Inner cylinder, 7... Locking member, 7a... Circle Annular kerf, 7b...Radial kerf.

Claims (1)

[Scope of utility model registration request] A shaft cylinder is provided with a through hole on the tail end surface and an inner stage with a small diameter section at the rear. A locking member made of an elastic material is provided with a plurality of radial grooves on the side and has an outer diameter approximately equal to the inner diameter of the small diameter portion of the shaft cylinder, and is fixed to the tail end surface and is biased by a spring to position it rearward. There are two types of refills: the pen body at the tip of the pen is inserted into the barrel when not writing, and the inner barrel that protrudes into the inside of the refill when it is fitted and attached to the tip of the barrel when not writing. When the pen body is airtightly held inside and fitted into the tail end of the barrel during writing, the inner barrel is inserted into the through hole of the barrel, and the annular tip of the inner barrel is a locking member. is pressed to move the refil forward, and when the locking member passes through the inner stage, the tip of the inner cylinder is inserted into the annular groove, and the locking member bulges outward, causing the locking member to pass through the inner stage. A refill-type marking pen consisting of a cap that locks into the cap and causes the pen body to protrude from the opening at the tip of the barrel.