JPH0541920Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention includes a slider that presses and advances the re-feel so that its writing part protrudes from the shaft tip opening;
The present invention relates to a ballpoint pen provided with a locking body that fixes the forward state of the slider and releases the fixed state to retreat the slider and retract the writing part of the reel into the shaft.

[Conventional technology]

As a conventional example of this type of ballpoint pen, as shown in Fig. 4, a re-feel 2 is housed inside a shaft 1 while being biased backward by a spring 3 so as to be movable back and forth, and the re-reel 2 is pressed while moving forward. A slider 6 for protruding the writing part 4 from the shaft tip opening 5 is disposed at the rear of the re-feel 2 so as to be movable back and forth,
A button part 8 that protrudes through the head from a hole 7 provided on the side surface of the shaft 1 engages with a locking part 9 provided on the slider 6 when the slider 6 is in an advanced state to re-feel 2.
The writing part 4 is fixed in a state protruding from the shaft tip opening 5, and is elastically displaced by pressing the button part 8 to disengage from the locking part 9 of the slider 6. A locking piece 10 that allows the writing part 4 to be retracted into the shaft by retracting the re-feel 2, and a support piece 11 located opposite the button part 8 and the locking piece 10. There is a ballpoint pen constructed by incorporating the stopper 12 into the hollow portion 13 of the slider 6 described above.

[Problem that the invention attempts to solve]

When assembling the locking body 12 of the conventional ballpoint pen to the shaft 1, first insert the locking body 12 into the hollow part 13 of the slider 6, and then insert the locking body 12 into the hollow part 13 of the slider 6.
While holding the slider 6 so that it does not slip out of the hollow part 13 and pressing the button part 8 of the locking body 12 so that it is recessed into the hollow part 13, insert both into the shaft 1 as one body from the shaft rear end opening 14. It was necessary to insert the slider 6 and push the rear end of the slider 6 until the button part 8 of the locking body 12 was fitted into the hole 7 of the shaft 1. Therefore, (a) the locking body 12 cannot be assembled to the shaft 1 alone, but must be assembled together with the slider 6, and (b) the locking body 12 is inserted into the shaft together with the slider 6 from the rear end port 14 of the shaft. Therefore, the button part 8 of the locking body 12 must be pushed a considerable distance (approximately 20 mm) against the spring 3 until it fits into the hole 7, and the slider 6 and the locking body 12 must be inserted into the shaft at the same time. In this case, the slider 6 is pressed and the locking body 12 is carried by the slider 6, so that the locking body 12 is in a retracted position inside the hollow part 13 of the slider 6, and when the assembly is completed, the locking body 12 is moved. On the other hand, the slider 6 moves forward and the writing part 4 of the re-feel 2 protrudes from the shaft tip opening 5, so there is no extra work to press the button part 8 of the locking body 12 and retract the writing part 4 into the inside of the shaft. There were drawbacks such as the need for The object of the present invention is to provide a ballpoint pen that improves the above drawbacks, facilitates assembly work, and improves productivity.

[Means for solving problems]

The invention of the present invention stores the re-feel inside the shaft while being biased rearward by a spring so that it can move back and forth, and a slider that presses the re-feel while moving forward and causes its writing part to protrude from the tip opening of the shaft is placed back and forth behind the re-reel. A freely movable button part whose head protrudes through a hole provided on the side of the shaft, and a writing part of the refeel that engages with a locking part provided on the slider when the slider is in the advanced state, and the writing part of the refeel is inserted into the shaft tip opening. By fixing the protruding state from above and pressing the button part, the slider is elastically displaced and disengaged from the locking part of the slider, allowing the slider and re-seal to retreat into the shaft of the writing part. In a ballpoint pen in which a locking body consisting of a locking piece and a support piece located opposite the button and locking piece is incorporated into the hollow part of the slider, the button part of the locking body When the slider is retracted, almost the whole part communicates with the hollow part of the shaft side surface opposite to the shaft side surface provided with the hole through which the locking body is inserted, and it supports the inner surface of the shaft cylinder. The above object is achieved by configuring a ballpoint pen characterized by having a through hole whose front end position is set near the rear of the contact point of the piece.

〔Example〕

1 to 3 show one embodiment, which will be explained in detail below based on the drawings. First, the shaft 1 has a clip 15 integrally molded on the lateral side surface of the rear end, and an axial notch is formed on the upper side surface of the rear end rotated approximately 90 degrees in the circumferential direction from the position of the clip 15, extending a required distance forward from the rear end opening edge. A groove 16 is provided, and a hole 7 is provided at a required distance forward position from the notch groove 16, and a straight line is formed from the front edge to a position slightly forward of the hole 7, and the hole 7 and the notch groove 16 are formed in a straight line from the front edge to a position slightly forward of the hole 7.
A rib 17 that splits into two on both sides of the hole 7 is provided on the outer surface of the upper surface, a flange 18 is provided on the rear edge, a threaded portion 19 is formed on the inner surface of the front end, and a rib 17 is provided on the outer surface of the upper surface on the opposite side of the hole 7. A through hole 20 of a required length is provided from a position slightly rearward of the hole 7 to near the rear end, and a locking hole 21 is further provided at a position immediately in front of the collar 18 behind the through hole 20. Next, the slider 6 has a finger hook 22 with an uneven surface integrally molded on the upper side surface of the rear end, and
A hollow part 13 is provided which opens from the upper side part to the lower side part and accommodates a locking body to be described later, and near the front end of the opening on the upper side of the hollow part 13, the inner surface slopes backward and forms a rear wall. As shown in FIGS. 2 and 3, the locking portion 9 is substantially perpendicular to the axial direction and has a triangular longitudinal section. The slider 6 can be moved back and forth within a certain range from the shaft rear end opening 14 with its finger hook 22 exposed between the ribs 17 on the outer surface of the upper surface of the shaft 1 through the notch groove 16. The hollow portion 13 is freely housed, and the openings of the upper and lower side surfaces of the hollow portion 13 are opposed to the hole 7 and the through hole 20, respectively. Reference numeral 23 designates a crown, which is provided with a protrusion 24 having approximately the same width as the notch groove 16 of the shaft 1 on its upper side, locking ribs 25 on both side walls, and is sandwiched between slits 26 on its lower side. A spring plate portion 27 is provided, and a locking hook 28 is provided at the front end portion of the outer surface thereof. After inserting the slider 6 into the shaft 1, the crown 23 is
It is pushed into the shaft rear end opening 14 with its protrusion 24 fitted into the notch groove 16, and its locking rib 2
5 and the locking hook 28 by elastic deformation, respectively, to the shaft 1.
The slider 6 is fixed by being engaged with a locking groove 29 provided on the front inner surface of the collar 18 and the locking hole 21 described above to prevent the slider 6 from coming off. The locking body 12 has a spring piece 30 and a support piece 11 connected in a substantially U-shape, and a locking piece that is inclined at the same slope as the inner surface of the locking part 9 of the slider 6 at the tip of the spring piece 30. 10 is provided, and a button part 8 is provided on the upper surface of the spring piece part 30 behind it, and the dimensions are set so that the tip of the support piece part 11 is located slightly behind the button part 8. The locking body 12 is installed inside the shaft through the through hole 20 of the shaft 1 alone after the slider 6 is housed inside the shaft and the crown 23 is fitted. The through hole 20 of the shaft 1 is set to be shorter than the spring piece 30 of the locking body 12 and slightly longer than the support piece 11, and its position is approximately the same as that of the through hole 20 when the slider 6 is retracted. The entire structure is set to communicate with the hollow portion 13 (see FIG. 2). Therefore, first, the slider 6 is moved back so that substantially the entirety of the through hole 20 and the hollow portion 13 are in communication with each other, and then the locking body 12 is tilted slightly with the spring piece 30 facing upward, and the through hole 20 is moved back. into the hollow part 13, then insert the support piece part 11 in parallel, and then insert the support piece part 11 into the hollow part 13.
Push the tip of the button a little so that it is hooked on the inner surface of the shaft 1 near the front edge of the through hole 20, and then press the rear end of the locking body 12 to move the locking body 12 forward slightly to release the button part 8. The locking body 12 is fitted into the hole 7 and the installation of the locking body 12 is completed. Next, reference numeral 31 denotes a shaft cover that is fitted onto the outer circumference of the shaft 1, and is provided with a groove 32 through which the rib 17 provided on the shaft 1 extends. 2 is refeel,
The rear end is brought into contact with the front end of the slider 6, and the slider 6 is housed inside the shaft so as to be movable back and forth. Reference numeral 3 denotes a spring that biases the reel 2 rearward. 33
is a base having a shaft tip opening 5, which is screwed onto the front end threaded portion 19 of the shaft 1, and clamps the front and rear ends of the shaft cover 31 together with the collar 18 at the rear end of the shaft 1 to fix the shaft cover 31 in a fixed state.
In addition, FIG. 2 shows a state in which the writing part 4 of the re-feel 2 is recessed into the shaft, and from this state the slider 6
When you put your finger on the finger hook 22 and slide it forward to move the refeel 2 forward together with the slider 6 and make the writing part 4 protrude from the shaft tip opening 5, the locking part 9 of the slider 6 will move as shown in FIG. causes the locking piece 10 of the locking body 12 to elastically displace and move forward, causing the locking piece 10 to engage with the rear wall. Next, in order to re-immerse the writing part 4 of the refeel 2 into the inside of the shaft, it is sufficient to press the button part 8 to elastically displace the locking piece part 10 and release the engagement state with the locking part 9.
The spring 3 causes the slider 6 and the re-seal 2 to retreat.

In the above embodiment, the shaft cover 3 is attached to the outer circumference of the shaft 1.
A through hole 2 is provided in the shaft 1 by fitting the hole 2 into the shaft 1.
Although the shaft cover 31 is not necessarily required, a shaft structure in which the through hole 20 of the shaft 1 is exposed may be used. Further, in the above embodiment, the slider 6 is attached to the finger hook 2 exposed on the side surface of the shaft.
2, the slider 6 is moved forward by the sliding operation, but the slider 6 may have a structure in which a knock bar is provided and the slider 6 is moved forward by the clicking operation.

[Action and effect]

The structure of the ballpoint pen of the present invention is as described above, and when the locking body is first assembled to the shaft, the slider is installed inside the shaft in advance, and then only the locking body is inserted alone through the through hole of the shaft. Next, the position of the through hole is much closer to the hole than when inserting the locking body from the rear end opening of the shaft, so it is easier to fit the button part of the locking body into the hole. The pushing distance is extremely shortened, and the locking body is inserted into the shaft through the hole with the slider retracted, and only the locking body is advanced to fit the button part into the hole, so the assembly is completed. In this case, the slider remains in a retracted state with respect to the locking body, and the writing part of the re-feel is recessed into the inside of the shaft, so there is no need to press the button part after assembly and recess the writing part into the inside of the shaft, as in the conventional example. This has the advantage of eliminating the need for additional work, and has the effect of simplifying the overall assembly process and improving productivity.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention, in which FIG. 1 is an exploded perspective view, FIG. 2 is a longitudinal cross-sectional view of the fully assembled state with the writing part recessed, and FIG.
The figure is also a longitudinal cross-sectional view of the writing part protruding in the assembled state. Further, FIG. 4 is an exploded perspective view showing a conventional example. 1...Shaft, 2...Refeel, 3...Spring, 4...Writing part, 5...Shaft tip opening, 6...Slider, 7...Hole, 8...Button part, 9...Locking part , 10... Locking piece part, 11... Supporting piece part, 12
... Locking body, 13 ... Hollow part, 14 ... Shaft rear end opening, 15 ... Clip, 16 ... Notch groove, 17 ...
...Rib, 18...Tsuba, 19...Threaded part, 20...
Through hole, 21... Locking hole, 22... Finger hook piece, 23...
... Crown, 24 ... Projection, 25 ... Locking rib, 2
6...Slit, 27...Spring plate part, 28...Latching hook, 29...Latching groove, 30...Spring piece part,
31... Shaft cover, 32... Groove, 33... Base.

Claims (1)

[Scope of utility model registration request] The re-feel is stored inside the shaft while being biased backwards by a spring so that it can move back and forth, and a slider that presses the re-eel while moving forward and causes its writing part to protrude from the tip of the shaft is arranged behind the re-eel so that it can move back and forth. When the button part of the head protrudes from the hole provided on the side of the shaft engages with the locking part provided on the slider when the slider is in the advanced state, the writing part of the re-feel protrudes from the shaft tip opening. A locking piece that fixes the button and is elastically displaced by pressing the button part to disengage the locking part of the slider and allow the slider and re-feel to retreat into the shaft of the writing part. In the ballpoint pen, the locking body is assembled into the hollow part of the slider, and the button part of the locking body protrudes. On the side surface of the shaft opposite to the side surface of the shaft provided with the hole, when the slider is retracted, almost the entirety thereof communicates with the hollow part, allowing insertion of the locking body, and making it possible for the support piece to come into contact with the inner surface of the shaft cylinder. A ballpoint pen characterized by having a through hole whose front end position is set near the rear of the contact point.