JPS5929235Y2 - Keyboard input pen - Google Patents

Description

[Detailed description of the invention] The present application uses two steel balls fitted into an annular groove in a rod provided on the input pen shaft, and a pen spring that presses the steel balls from the outside to keep the input pen shaft smooth and constant. It was invented for the purpose of a keyboard input pen that operates using force.

The present application is an invention for a kanji keyboard in which an input pen must be able to reliably input a 5×5u square character pattern part with a constant pressure.

To explain one embodiment now, a hollow front pen body 1 with a closed front part and an open rear part is provided with an entry/exit hole 1a for the input pen shaft 2 in the center of the front part, and the rear end is inserted into the entrance/exit hole 1a. An input pen shaft 2 having a stopper ring 2a nearby is fitted into the input pen shaft 20. A rod portion 2c with a small diameter and an annular groove 2b at one place is formed at the rear end of the input pen shaft 2, and a hole into which the rod portion 2c is fitted is formed. A steel ball holder 3 with a hole 3a drilled in the front part is fitted and fixed together with a pen spring 5 to the front part of the rear pen body 4, and the rear pen body 4 is fitted and fixed from the opening of the front pen body 1,
Fit the input pen shaft 20 rod part 2c into the hole 3a, and drill a through hole 3b perpendicular to the hole 3a at the location where the hole 3a of the steel ball holder 3 is bored, and insert a double steel ball 6 into the through hole 3b. At the same time, the pen spring 5 is brought into contact with the outside of the steel ball 6, and the inner surface of the steel ball 6 is fitted into the annular groove 2b of the rod portion 2c.

The steel ball holder 3 is fitted and fixed together with the pen spring 5 into a hole 4a bored in the front end of the rear pen body 4.

The pen spring 5 is formed to have a length sufficient to hold down the steel ball 6 and is pressed.

In the present application, the two steel balls 6 are supported by the steel ball holder 3 fixed to the rear pen body 4 and can move only in the direction perpendicular to the input pen shaft 2 due to the above-mentioned structure.

Next, to explain its operation, before use, the two steel balls 6 are moved by the outer pen spring 5 to the rod portion 2c of the input pen shaft 2.
It is in a state where it is pressed and fitted into the annular groove 2b.

After that, during use, the pen shaft 2 is pulled into the front pen body 1 by an external force, and at that time, the two steel balls 6 are held in the direction perpendicular to the input pen shaft 2 by the steel ball holder 3 fixed to the rear pen body 4. Because it is possible to move

It is relatively pushed up from the groove of the input pen shaft 2 and stops with the steel ball holder 3 and the input pen shaft 2 aligned (stroke).

What is important here is the width and depth of the annular groove 2b provided in the input pen shaft 2, the size of the steel ball 6, the strength of the pen spring, and the stroke of the input pen shaft 20.

these are Width of annular groove 2b (diameter of steel ball 6) The depth of the annular groove 2b and the radius of the steel ball 6 Stroke of input pen shaft 2 <radius of steel ball 6 It is based on this mutual relationship.

Therefore, the steel ball 6, which is constantly pressed down by the pen spring 5, is subjected to a force acting thereon to return into the annular groove 2b of the input pen shaft 2.

Therefore, when the input ends and the external force disappears, the input pen shaft 2 is pushed forward and returns to the state before operation.

In this application, the front part is closed and the rear part is opened as described above.

An entry/exit hole 1a for an input pen shaft 2 is bored in the front center of the hollow front pen body 1, and a pen shaft 2 having a stopper ring 2a near the rear end is fitted into the entry/exit hole 1a.
An annular groove 2b with a small diameter in one place at the rear end of the input pen shaft 2
A hole 3a shaped like the rod portion 2c provided with the rod portion 2c and into which the rod portion 2c is fitted.
A steel ball holder 3 with a hole drilled in the front part is fitted and fixed together with a pen spring 5 to the front part of the rear pen body 4, and the rear pen body 4 is fitted and fixed from the opening of the front pen body 1, and the hole 3a is fixed. The input pen shaft 20 rod part 2c is fitted to the steel ball holder 3.
A through hole 3b is drilled perpendicularly to the hole 3a at the location where the hole 3a is drilled, and two parts of the steel ball 6 are fitted into the through hole 3b, and the pen spring 5 is brought into contact with the outside of the steel ball 6. The inside part is the rod part 2
It fits into the annular groove 2b of c (-), so if more force than necessary is applied to the input pen shaft, the steel ball will be pushed out of the annular groove and the input pen shaft will enter the pen body for a certain stroke and release the external force. Since the input pen shaft does not apply more force than necessary to the pressure sensitive plate, it has the effect of keeping the resistance value against the unit cell substrate etc. constant.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of the entire input pen, Figures 2 and 3 are enlarged cross-sectional views of the main parts, Figure 2 is a cross-section showing the state in which the input pen shaft is not moving, and Figure 3 is a cross-sectional view showing the state in which the input pen shaft is moved. It is a diagram. 1... Front pen body, 1a... - entrance/exit hole, 2...
Input pen shaft, 2a...stopper ring, 2b
... Annular groove, 2c... Rod portion, 3... Steel ball holder, 3
a... Hole, 3b... Through hole, 4... Rear pen body, 5... Pen spring, 6... Steel ball.

Claims (1)

[Scope of utility model registration request] An input/exit hole 1a for an input pen shaft 2 is bored in the center of the front part of a hollow front pen body 1 whose front part is closed and the rear part is open, and the input pen shaft 2 has a stopper ring 2a near the rear end of the entrance/exit hole 1a. A steel ball holder 3 is formed with a rod portion 2c having a small diameter and an annular groove 2b in one place at the rear end of the input pen shaft 2, and a hole 3a in the front portion into which the rod portion 2c is fitted. is fitted and fixed to the front part of the rear pen body 4 together with the pen spring 5, and the rear pen body 4 is fitted and fixed from the opening of the front pen body 1, and the rod part 2c of the input pen shaft 2 is inserted into the hole 3a. A through hole 3b is bored perpendicularly to the hole 3a at the location where the holes 3a of the steel ball holder 3 are fitted and the steel balls 6 are double fitted into the through holes 3b. This pen for keyboard input is made by abutting a pen spring 5 and fitting the inner surface of a steel ball 6 into an annular groove 2b of a rod portion 2c.