JPH0228074Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a writing instrument having an operating member that can be operated without essentially changing the position of the writing instrument in the hand.

BACKGROUND OF THE INVENTION From DE 10 20 256 A1 a hand-held writing instrument is known which has a lead that is actuated by lateral pressure on a laterally elastic part of the writing instrument barrel. In this known writing instrument, the barrel and the clip are integrally formed. Manipulation of the lead takes place without essentially changing the position of the writing instrument in the hand.

However, the internal knob mechanism for manipulating the lead is significantly different from the normal knob mechanism in ballpoint pens. Moreover, it is technically difficult to precisely fit the inner wall notch member to the conical portion, and when used for a long period of time, friction between the two conical surfaces may cause trouble when operating the handheld writing instrument.

[Problem to be Solved by the Invention] The problem to be solved by the invention is to solve the problem of the known knock mechanism of a writing instrument having a significantly tapered upper barrel end.
It is an object of the present invention to provide an operation member that can be easily assembled.

[Means for Solving the Problems] In order to solve the above-mentioned problems, in the present invention, the operation slider is frictionally connected to the knob mechanism via a web that penetrates and engages with a slit-shaped opening in the shaft cylinder wall. The web is integrally molded in the center of the operating slider, and further includes a cylindrical gripper having a slit at the end of the web facing the notch mechanism, and the gripper, when assembled, engages the notch mechanism. The end of the web is adapted to snap into engagement with a pin in the knob member, and such end of the web is thick enough to allow the cylindrical gripper to be compressed and passed through a slit-like opening in the barrel wall. I made it seem like it was.

[Effects of the invention] According to the invention, the web integrally formed at the center of the operating slider penetrates and engages with the opening of the slit in the shaft cylinder wall, and the gripper provided at the end of this web has a slit-like shape. Although it is compressed when passing through the opening, it returns elastically after passing, so that the operating slider does not slip off the shaft cylinder wall during the preparation stage for assembling the knock mechanism. In this way, since the operating slider is attached to the shaft cylinder wall without sliding down, the operating slider can be easily connected to the knock mechanism with a snap when assembling the knock mechanism.

In an advantageous embodiment of the invention, the width of the web molded in the center of the actuating slide is the same as the width of the slit-like opening in the barrel wall, so that the web is held and guided in the opening. . This likewise serves for an advantageous positioning of the actuating slide prior to assembly of the locking mechanism.

In a further advantageous embodiment, the actuating slide is arranged in a tray-shaped recess in the barrel wall in such a way that the outer contour of the writing instrument remains substantially intact;
Furthermore, the length of the web is configured such that the cylindrical gripper at the end of the web centers, holds and guides the pin of the knock member when the operating slide is inserted into the cutout. There is. This ensures that the operating slider does not impair the design of the writing instrument, and that a fixed connection between the knob mechanism and the operating slider is ensured.

In a further embodiment, the operating slide is arranged offset by 90 degrees with respect to the barrel clip. The advantage obtained by this is that the position of the writing instrument in the hand does not have to change much to operate the lead, which means that the writing instrument can be held in almost the same hand when pressing the operating slider as when writing. It's something you can have in position.

It is further advantageous if the surface of the operating slide has knots,
It has ribs, corrugations or recesses. This prevents the thumb from slipping during operation.

[Example] The invention will be explained below with reference to the illustrated embodiments.

FIG. 1 shows a longitudinal section of the upper half of a writing instrument having a barrel 1, on one side of which a clip 2 is integrally molded. Due to the shape of modern writing instruments, in particular, the upper part 3 of the writing instrument has a substantially uniform thickness and the clip 2 is integrally formed with the writing instrument.
The upper part 4 of the barrel is tapered as follows. This means that the actuating knob element for the lock mechanism 5, which is normally arranged centrally at the upper end of the barrel 1, is accommodated here in the region 17 between the clip 2 and the barrel 1 without risk of material destruction. It's like you can't do that anymore. The locking mechanism 5 is therefore arranged in the cylindrical central part of the barrel 1, below the tapered upper barrel part 4.

Since the well-known locking mechanism 5 is used in this type of writing instrument, as shown in the enlarged longitudinal sectional view in FIG. An operation slider 6 is provided at a position shifted by 90 degrees. A web 7 is integrally molded in the center of the actuating slide 6, which web is held and guided in a slot-like opening 8 of the barrel 1. The web 7 connects the knob mechanism 5 and the operating slider 6. The operating slider 6 has a cylindrical gripper 9 at its end facing the knocking mechanism 5 (see FIG. 3), and the gripper has a shape similar to a pin 11 integrally molded on the knocking member 10 of the knocking mechanism 5. Connectively and frictionally coupled.

The pin 11 has two stops 12, 13 whose mutual spacing corresponds to the height of the web 7. The end of the pin 11 above the stop 13 is tapered truncated to a diameter smaller than the diameter of the cylindrical area between the two stops 12, 13 of the pin. The cylindrical gripper 9 in FIG. 3 does not completely surround the pin 11;
That is, it has a slit, and the outer diameter of the gripper is slightly larger than the width of the web 7. The gripper can therefore be deflected during assembly, so that the gripper 9 can easily pass through the slot-like opening 8 in the barrel 1 without falling due to the weight of the operating slide 6. The inner diameter of the gripper 9 is chosen so that it tightly encloses the cylindrical area of the pin 11 in the assembled state.

The operating slide 6 is fitted into a tray-shaped recess in the barrel wall, so that the outer contour of the writing instrument remains approximately the same. In short, the operation slider is
It fits the design of the writing instrument except for the wavy or knotted surface 15. Furthermore, the sliding surface of the operating slider 6 is spaced from the center of the gripper 9 such that the pin 11 is not bent or twisted when the operating slider 6 is slidably fitted into the sliding surface 14 of the tray-shaped notch 16. It has been since.

The automatic belt conveyor assembly for writing instruments is carried out in a simple manner as follows.

First, the web 7 is inserted into the slit-shaped opening 8 of the shaft cylinder 1.
is inserted by compressing the cylindrical gripper 9. Since the width of the web 7 corresponds exactly to the slit width of the opening 8, the actuating slide 6 moves into the cutout 1.
6 , so that the gripper 9 is forced to be centered within the barrel 1 . In the next assembly step, the lock mechanism 5 is brought into the barrel 1 of the writing instrument from below. When the truncated conical end of the pin 11 is inserted into the cylindrical gripper 9 from below, the gripper 9 is inserted into the web or the gripper 9.
is expanded due to material elongation during the movement process until it snaps into engagement between stops 12, 13 of pin 11.

This ensures simple and reliable fixing of the operating slide 6 and the knob mechanism 5. Furthermore, it is particularly advantageous for the actuating slide to be arranged offset by 90 degrees with respect to the clip 2, which is integrally formed on the barrel, so that the actuating slide can be moved by the thumb of the writing hand. In other words, the writing instrument can be operated without changing the position of the writing instrument held in the hand. Of course, when writing, it is advantageous to hold the writing instrument in your hand so that the operation slider is within the range that can be operated with your thumb.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view showing the upper half of a handheld writing instrument according to the present invention; Fig. 2 is a partially enlarged longitudinal cross-sectional view of the upper half shown in Fig. 1 taken at a position shifted by 90 degrees; The figure is a sectional view taken along the line A-A in FIG. 2. DESCRIPTION OF SYMBOLS 1... Barrel, 2... Clip, 3... Upper part of writing instrument, 4... Upper part of barrel, 5... Knock mechanism, 6... Operation slider, 7... Web, 8...
Opening, 9... Cylindrical gripper, 10... Knock member, 11... Pin, 12, 13... Stopper,
14...Sliding surface, 15...Surface, 16...Notch portion.

Claims (1)

[Claims for Utility Model Registration] 1. In a hand-held writing instrument having an operating member arranged non-concentrically with respect to the longitudinal axis, the operating member is adapted to act on a knock mechanism. , an operating slider 6 is frictionally connected to the knob mechanism 5 via a web 7 that penetrates and engages a slit-like opening 8 in the wall of the shaft cylinder, and furthermore, the web 7 is integrally connected to the center of the operating slider 6. The web 7 has a cylindrical gripper 9 having a slit at the end thereof facing the knocking mechanism 5, which gripper snaps onto the pin 11 of the knocking member 10 of the locking mechanism 5 during assembly. and that such end of the web is made thick enough to allow the cylindrical gripper 9 to be compressed and pass through the slit-like opening 8 in the barrel wall. A handheld writing instrument with a distinctive operating member. 2. The width of the web 7 integrally molded in the center of the operating slide 6 is the same as the width of the slit-like opening 8 in the wall of the shaft cylinder, so that the web 7 is held and guided within the opening 8. Utility model registration A hand-held writing instrument according to claim 1. 3 The operation slider 6 is inserted into the tray-shaped notch 16 in the wall of the shaft cylinder.
It is arranged in such a way that the outer contour of the writing instrument remains approximately maintained, and the length of the web is such that when the operating slide 6 is inserted into the cutout 16, the length of the web 7 at the end of the web 7 is The hand-held writing instrument according to claim 2, wherein the cylindrical gripper 9 is formed to center, hold, and guide the pin 11 of the knob member 10. 4. The handheld writing instrument according to claim 3, wherein the operating slider 6 is arranged at a position shifted by 90 degrees with respect to the clip 2 of the barrel 1. 5. The hand-held writing instrument according to claim 4, wherein the surface 15 of the operation slider 6 has knots, ribs, corrugations, or recesses.