JP3357165B2 - Writing implement with seal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a writing implement with a seal having a writing body on the front side and a seal on the rear side.

[0002]

2. Description of the Related Art Conventionally, there has been provided a knock mechanism comprising a cam groove, a knock bar and a rotary cam member. Knock-type ballpoint pens that appear and disappear from the front are known. Further, there is known a seal unit which is detachably attached to a knock mechanism directly or via a holder and is positioned so as to protrude from a rear end of a shaft cylinder.

[0003]

However, in the prior art, when the user grips the back of the barrel and performs the stamping, the knocking mechanism interlocks and the writing tip protrudes or sinks inadvertently from the tip opening of the front shaft. Problem occurs. In addition, there is a problem that it is difficult to stamp since the seal is axially shifted by pressing. In addition, there is a problem that the stamp surface is misaligned because the stamp surface comes into direct contact with a document or the like at the time of stamping. Then, an object of the present invention is to solve the above problems.

[0004]

A writing instrument with a seal according to the present invention devised to achieve the above object has a knock mechanism portion provided in a rear inner hole of a middle joint, and the middle joint has a knock mechanism portion. In the front shaft fixed in front, a writing body such as a ballpoint pen is arranged in front of the knock mechanism, a holder is fixed behind the middle joint, the seal is fixed to the rear end of the holder, and the slider is In addition to being mounted so as to be able to move only in the axial direction, and connected so as to interlock with the knock mechanism, a rear shaft closed at the rear end is detachably fixed to the outer periphery of the slider. Further, the guide tube is provided in a state where the rear end thereof protrudes rearward from the stamp surface without contact with the outer periphery of the seal, and the guide tube is fixed or detachably fixed to the rear of the slider.

[0005]

1 to 7 show a first embodiment of the present invention. First, as shown in the figure, the inner joint 2 is configured to have a tubular portion 3 at the front and a flange 2b at the rear end. The inner joint 2 is entirely tubular, and a threaded portion 3a is provided at the tip of the tubular portion 3, and two projecting engagement portions 2a are formed on the outer peripheral portion of the rear end. A window 2d penetrating the flange 2b in a tunnel shape is formed. A cam groove 2e is formed behind the inner hole of the cylindrical portion 3, and a step 2c is provided at the rear end of the cam groove 2e. (The flange 2b is located at the rear outer peripheral portion of the step 2c.)

A cam portion 5 formed at the front of the knock bar 4 is fitted in the cam groove 2e, and the knock bar 4 is fitted to the intermediate joint 2 so as to be movable back and forth. Is a rotor 7 having a cam portion 9 which is in contact with the tip of the cam portion 5.
Are also arranged to be compliant with the cam groove 2e.

The above-mentioned cam groove 2e, the knock mechanism constituted by the knock bar 4 and the cam portion 5, and the rotor 7 and the cam portion 9 are formed in the same manner as those widely known as the Kahn type knock mechanism. Detailed description is omitted. Further, a cylindrical shaft 8 is extended behind the rotor 7, and the shaft 8 is
Is fitted in the center hole of the shaft 6 which also extends rearward,
The rotor 7 is axially shifted with respect to the knock bar 4 within an appropriate range and is free to rotate. The rotor 7 is restricted by the abutment of the protrusions between the outer peripheral portion of the shaft portion 8 and the center hole of the knock bar 4. An engaging portion (not shown) of a retaining member to be removed is provided. The reason for providing the above-mentioned convex portion will be described later.
When the curl is removed and the cursive is removed, the rotor 7
This is to prevent the falling off.

[0008] As shown in FIG.
It has two guide pieces 11a extending forward from 1f, and a guide groove 11b is formed between the guide pieces 11a.
A locking piece 11c having a window hole-shaped locking portion 11d is provided at the tip of the guide piece 11a. An elastically displaceable fitting cylinder portion 11e having an appropriate slit is provided at the rear of the holder 11, and the holder 11 is formed of an integral resin molded product having excellent elasticity.

The slider 12 is provided with a disk-shaped partition 12a at a substantially central inner hole, a small hole formed at the center of the partition 12a, and a required portion of an outer peripheral portion connected to the inner hole. Is formed with a slit hole 12g. A circumferential groove-shaped engaging portion 12d for locking a guide tube 14 to be described later is formed on the outer periphery of the rear cylinder portion 12c behind the center, and a rear shaft described later is formed on the outer periphery of the front front cylinder portion 12b. An engaging portion 12f in the form of a convex rib for locking the engaging member 1 is formed, and a flange 12e is formed circumferentially at the tip of the front cylindrical portion 12b.

As described above, the slider 12 is mounted on the holder 11 such that the guide piece 11a of the holder 11 is fitted in the slit hole 12g so as to be axially movable, and the rear end of the coil spring 10 is brought into contact with the front surface of the partition 12a. The front end of the coil spring 10 is brought into contact with the step 2f from the rear side of the middle joint 2, and the locking piece 11c of the holder 11 is made to penetrate through the window 2d of the middle joint 2 to form a window-like locking. The portion 11d is fitted to the protruding locking portion 2a of the middle joint 2. At this stage, the holder 11 is fixed to the intermediate joint 2, and the slider 12 is supported by the holder 11 so as to be able to move only in the axial direction.

In the assembling sequence, at this stage, the knock bar 4 and the rotor 7 are fitted into the inner joint 2, and the respective cam portions 5 and 9 are fitted into the cam grooves 2e. A locking portion 6b provided on the slightly smaller diameter shaft portion 6a protruding from the rear end of the shaft portion 6 of the knock bar 4 is appropriately engaged with a small hole provided at the center of the partition portion 12a of the slider 12 (see FIG. Not shown) Slider 1
The knock bar 2 and the knock bar 4 (accordingly, the knock mechanism) are connected so as to interlock with each other. In addition, since the knock bar 4 and the rotor 7 are prevented from coming off by the engagement of the projections, the rotor 7 does not fall off with the writing body removed as described above.

A rear end portion of a writing body 23 such as a ball-point pen is inserted into an inner hole of the shaft portion 8 of the rotor 7, and the tube 2
A return spring 26 is attached by abutting the rear end to the crimp 24a formed in the screw 4 and the screw 3a of the tubular portion 3 of the inner joint is screwed into the inner hole with the screw 13a.
The front shaft 13 is fixed to the front shaft 13 (which may be an elastic engaging portion capable of locking between them).
c, the writing body 23 such as a ball-point pen is constantly urged rearward.

The seal 19 is provided on a rear shaft portion 20 of a mounting base 20.
A printed body 21 is placed on the rear surface of the rear part c, and the outside is covered with a cover 22, and the cover 22 is fixed to the rear shaft part 20c.
The fitting cylinder 11e of the holder 11 is fitted into the hole of the front shaft portion 20a of the mounting base 20 by appropriate frictional engagement, and the stamp face 21a is exposed at the rear end, and the seal 19 is attached.
Further, the printing body 21 is made of a printing material having a porous through hole and capable of impregnating ink, and a printing surface 21 a such as a name is engraved on the front surface of the printing body 21. If necessary, an ink occluding body and a cushion are provided between the printing body 21 and the rear end of the mounting table 20.

The above-described guide tube 14 is fitted to the rear tube portion 12c of the slider 12, and an inwardly projecting locking portion 14a formed at a required portion on the outer periphery of the forward portion of the guide tube 14 is engaged with the engaging portion 12d. , And the guide cylinder 14 is detachably fixed to the slider 12. (The reason why the guide cylinder 14 is made detachable is to facilitate the exchange of the seal 19, and if it is not necessary, the guide cylinder 14 may be fixed.) The part is in a non-contact state. Also, the rear end of the guide cylinder 14 is
It is provided so as to protrude rearward from 1a as appropriate.

The rear shaft 1 may be made of resin, but in the embodiment is formed of a metal cylinder. A decoration ring 15 is fixed to the front end of the rear shaft 1. The rear end of the rear shaft 1 has an edge-shaped top plate 1a (not shown), and has a notch 1b at one end. The rear end of the clip 17 has a ring-shaped seat 17.
a is provided. In the clip 17, the crown 17 is attached to the rear end of the rear shaft 1 with the seat 17a inserted into the top plate 1a and the upper end 17b of the seat 17 fitted into the notch 1b. A clip fixing washer 18 is mounted on the shaft portion 16a of the rear shaft from the inner hole side of the rear shaft, and is clamped and fixed by the fixing portion 18a. Note that there are various methods for attaching the clip, and the method is not limited to this embodiment.

The rear shaft 1 is fitted with the front cylindrical portion 12b of the slider 12, the front end of the decorative ring 15 abuts against the flange 12e, and the engaging portion 12f is fixed to the inner surface of the rear shaft 1 by appropriate frictional engagement. Is done.

FIGS. 8 to 12 show the second embodiment of the present invention.
Is shown. As shown in the figure, this is the first
The embodiment does not include the guide tube 14. The reason will be described later in the section of the operation. The other configuration is the same as that of the first embodiment, and the description is omitted. FIG.
Also, as shown in FIG. 12, marks 27 and 33 are provided on the peripheral surface of the front cylindrical portion or the rear cylindrical portion of the sliders 12 and 31. The mark is prepared for defining the direction of the stamp surface.

[0018]

According to the first embodiment of the present invention, when the rear end of the rear shaft 1 is knocked, the slider 12 is moved to the knock mechanism. In conjunction with the writing tip 25 of the writing body 23 such as a ball-point pen
Protrudes and retracts from the distal end port 13d of the front shaft 13. When the rear shaft 1 is removed for sealing, the rear part of the front shaft 13 is pinched with a finger. First, the tip of the guide tube 14 comes into contact with a surface of a document or the like,
By further pressing, the stamp surface 21a comes into contact. Normally, the knock stroke for locking the writing tip 25 in the protruding / retracting state is set to be larger than the stroke in which the guide cylinder 14 can move to the surface of the stamp surface 21a. It is possible to avoid the inconvenience that the writing tip 25 appears and disappears. Further, if the mounting force of the rear shaft 1 on the slider 12 is defined by a spring force within a range in which the knock mechanism does not operate, the inconvenience of the writing tip 25 protruding and retracting even when the rear shaft 1 is mounted can be avoided. Next, according to the second embodiment, the appearance of the cursive writing is the same as that of the first embodiment. At the time of stamping, the front cylinder part 31a of the slider 31 may be pinched with a finger and the stamped surface may be pressed against a stamped portion such as a document, or the rear part of the front shaft 32 may be pinched and pressed. In this case, there is no problem that the knocking mechanism operates by the seal and the writing tip inadvertently appears and disappears. However, there is a disadvantage that it is not possible to correct the stamping position to the correct position for stamping.

[0019]

The construction and operation of the writing instrument with a seal of the present invention are as described above. Since the seal does not change axially when pressed, it is easy to make a seal. In addition, it is possible to prevent a problem that the writing tip is inadvertently protruded and retracted due to knocking at the time of sealing. In addition, there is an effect that it is possible to provide a writing instrument with a seal that has a fountain pen style and good appearance. In addition, if the guide tube is provided, the stamping tube comes into contact with a document or the like at the time of stamping, so that the stamping position can be correctly corrected.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention, and shows a state in which a writing tip of a ballpoint pen is stored in a tip opening of a front shaft.

FIG. 2 is a perspective view showing part development of the first embodiment.

FIG. 3 is a longitudinal sectional view showing the first embodiment of the present invention, and shows a state in which a writing tip of a ballpoint pen projects from a tip end of a front shaft.

FIG. 4 is a cross-sectional view showing a state immediately before stamping.

FIG. 5 is a cross-sectional view showing a stamped state.

FIG. 6 is a perspective view showing the appearance of the first embodiment.

FIG. 7 is a perspective view showing the appearance of the first embodiment with the rear shaft removed.

FIG. 8 is a longitudinal sectional view showing a second embodiment of the present invention, and shows a state in which a writing tip of a ballpoint pen is housed in a tip opening of a front shaft.

FIG. 9 is a perspective view showing part expansion of the second embodiment.

FIG. 10 is a longitudinal sectional view showing a second embodiment of the present invention, in which a writing tip of a ballpoint pen is projected from a tip opening of a front shaft.

FIG. 11 is a perspective view showing the appearance of the second embodiment.

FIG. 12 is a perspective view showing the appearance of the second embodiment with the rear shaft removed.

[Explanation of symbols]

 Reference Signs List 1 rear shaft 1a top plate portion 1b notch 2 middle joint 2a locking portion 2b flange portion 2c step portion 2d window portion 2e cam portion 2f step portion 3 cylinder portion 3a screw portion 4 knock bar 5 cam portion 6 shaft portion 6a shaft portion 6b Engagement part 7 Rotor 8 Shaft part 9 Cam part 10 Coil spring 11 Holder 11a Guide piece 11b Guide groove 11c Lock piece 11d Lock part 11e Fitting cylinder part 11f Step part 12 Slider 12a Partition part 12b Front cylinder part 12c Rear Tube part 12d Engagement part 12e Flange part 12f Engagement part 12g Slit hole 13 Front shaft 13a Screw part 13b Rib 13c Step part 13d Tip opening 14 Guide cylinder 14a Engagement part 15 Decoration ring 16 Crown 16a Shaft part 16b Flange part 17 Clip 17a Seat 17b Upper end 18 Clip fixing plate 18a Fixing part 19 Seal 20 Mounting base 20a Flange 20b Shaft portion 20c after the shaft portion 21 print body 21a the seal face 22 cover 23 ball-point pen or the like cursive 24 tubes 24a crimp 25 writing tip 26 after the return spring 27 marks 30 axis 31 slider 31a front cylindrical portion 31b after the tubular portion 32 above shaft 33 marks

Claims (4)

(57) [Claims] 1. A knock mechanism is disposed in a rear inner hole of a middle joint, and a writing body such as a ballpoint pen is arranged in front of the knock mechanism in a front shaft fixed in front of the middle joint. The holder is fixed to the back of the inner joint, the seal is fixed to the rear end of the holder, and the slider is externally mounted on the holder so that only the shaft can move, and is connected to interlock with the knock mechanism. A writing implement with a seal, wherein a rear shaft closed at the rear end is detachably fixed to the outer periphery of the slider. 2. A guide tube is provided so that the rear end thereof protrudes rearward from the stamp surface without contact with the outer periphery of the seal, and the guide tube is fixed or detachably fixed to the rear of the slider. The writing implement with a seal according to claim 1. 3. A partition having a slit at a required position is provided in an inner hole of the slider, and a guide piece fitted into the slit is provided in front of the holder. The writing implement with a seal according to claim 1, wherein a locking portion for fixing each other is formed on a rear outer peripheral portion of the inner joint and the inner joint. 4. An outer peripheral portion of a front cylinder portion of the slider is provided with an engagement portion of a ridge for appropriately locking with a rear shaft, and a front cylinder portion is provided with a flange portion at which a front end of the rear shaft abuts. The writing implement with a seal according to claim 1, characterized in that: