JPS5828879Y2 - Cursive writing device for writing instruments - Google Patents

Description

[Detailed description of the invention] This invention consists of a cursive pushing member provided with a slope, and a swinging member that has a contact surface that contacts the slope and swings around a fulcrum. The present invention relates to a writing instrument in which a writing instrument is drawn out of a barrel by swinging motion, and a writing tool projecting/retracting device that has an improved pressing means for applying a pressing force to the swinging member.

As described above, the contact surface of the swinging member is brought into contact with the slope provided on the cursive pushing member, and a pressing force is applied to the swinging member to move the cursive by a length that the two overlap,
There is already a basic idea of a writing implement structured to obtain a writing state in Utility Model Application No. 5319432.

According to this invention, as will be described in detail later, a large amount of movement of the writing font can be obtained with a small pressing stroke of the pressing means.

This proposal is based on the invention of Utility Application No. 53-19432,
It is intended to provide a simple, safe, and reliable cursive writing device.

Hereinafter, embodiments of the present invention will be described based on the drawings.

The cursive pushing member 1 has one end that serves as a contact portion 1b for contacting the cursive 4, and the other end that forms a slope 1a.

The swinging member 2 has a contact surface 2a in contact with the slope 1a of the writing body pushing member, and swings around a fixed pin P as a fulcrum, and has a continuous cam surface 5 having an apex 3 on its end surface.
, 6 are formed.

Here, the top portion 3 of the cam surface is located at an offset position with respect to the axis passing through the fulcrum P (as shown in the first figure).

Therefore, in the cam surfaces 5 and 6 separated by the top portion 3, the slope of the upper cam surface 5 is longer than the slope of the cam surface 6 located below.

The knocking member 7 includes a portion 7b exposed outside the shaft cylinder 8 and a pendulum 7.
The pendulum 7a must have its end surface 9 connected to the entire surface of the end surface 10 of the exposed portion 7b before and after the knocking operation, that is, in a stationary state. It is necessary to always be in a position opposite to the fulcrum P in the axial direction.

However, the positional relationship between the two does not necessarily have to be in such a state.

For example, as shown in FIG. 7, when the top 3 of the continuous cam surface is located in alignment with the axis passing through the fulcrum P, and the lengths of the slopes of the upper cam surface 5 and the lower cam surface 6 are made equal, The stationary pendulum 7a may be placed at a biased position with respect to the fulcrum P.

In short, the positional relationship between the two is relative, and when the contact surface 2a of the swinging member is in contact with the slope 1a of the pushing member due to the pressing operation of the knocking member 7, the pendulum 7a moves against the upper cam surface 5. It is important that the pendulum 7a fits with the lower cam surface 6 when the engaging part 13 of the swinging member is engaged with the locking part 14 of the pushing member.

S indicates a step 8a provided on the inner wall of the shaft cylinder 8 and a base 1 of the pendulum 7a.
This is a spring that is a resilient material and is hung between the pendulum 7a and the pendulum 7a and constantly presses the pendulum 7a toward the exposed portion 7a.

Various structures are conceivable for joining the pendulum 7a and the exposed portion 7b, but it may be loosely fitted into the bottomed hole 12 of the exposed portion 7b as shown in the attached drawing, or simply by connecting the end surfaces 9, 10.
It is enough to just join like-minded people.

In the case of a loose fit, there is an advantage that more stable operation of the knock member 7 can be expected.

Next, the operation of the device according to the present invention will be explained based on the attached drawings for convenience.As mentioned above, the pendulum 7a is moved by the elastic force of the sling S. It can be seen that it is possible to always restore the state of facing the axis passing through the fulcrum P of No. 2.

In the figure, reference numeral 13 denotes the retaining portion of the swinging member as described above, which engages with the locking portion 14 of the writing press member.

A writing state is obtained by the engagement of the two, and the writing pressure during writing is received at the fulcrum P via the engaging portion X of the two, as shown in the fourth figure.

S' always presses the slope 1a of the pushing member via the writing 4,
This is a spring that presses against the contact portion 2a of the swinging member.

Moreover, 15 is a box body that guides the contact portion 1b of the writing press member and also serves as a connection medium with the front shaft cylinder 16.

FIG. 1 shows a state in which the writing body 4 is recessed into the barrel 16, but if the knock member 7 is pressed from this state, the writing body 4 will be exposed from the barrel 16.

To explain this process in more detail, as mentioned above, the pendulum 7a is stationary at a position opposite the fulcrum P of the swinging member due to the elastic force of the spring S, so when the knocking member 7 is pressed, the pendulum 7a 7a comes into contact with a long slope of the upper cam surface 5, and eventually slides on this slope to reach the bottom and is fitted into the cam surface 5 (as shown in the second figure).

If the knocking member 7 is continued to be pressed in this state, the pressing force applied to the tip of the pendulum 7a will cause the swinging member 2 to swing.
At this time, the contact portion 2a slides on the slope 1a of the pushing member,
Eventually, the retaining portion 13 is engaged with the locking portion 14 of the push member (as shown in the third diagram).

In this state, the pendulum 7a is moved by the spring S as shown in the third figure.
It fits into the cam surface 5 against the elastic force of the knock member 7 and is biased upward, but when the pressing force on the knock member 7 is released,
The elastic force of the spring S causes the end surface 9 to become the exposed end surface 10.
It will return to its original state of being fully bonded.

Through the above process, the writing condition is obtained,
Since the writing 4 is fed out by the swinging movement of the swinging member 2 that contacts the writing pushing member 1, the pressing stroke of the knocking member 7 that applies a pushing force to the swinging member 2 can be relatively small. become.

By the way, when the slope 1a of the cursive pushing member is formed at approximately 50° and the length L over which the two overlap, that is, the amount of movement of the pushing member 1 is set to 5 mm, the pushing member 1 is moved by this overlap amount l. The pressing stroke of the knock member 7 to move it was just over 3 mm.

Next, in order to cancel this writing state and retract the writing body 4 into the barrel 16, the knocking member 7 may be pressed from the state shown in FIG. 4.

By pressing the knock member 7, the pendulum 7a comes into contact with the short slope of the lower cam surface 6, and eventually reaches the bottom and is fitted into the cam surface 6 (as shown in the fifth figure).

If the pressing is continued in this state, the pressing force applied to the tip of the pendulum 7a will cause the swinging member 2 to swing in the opposite direction (in the direction of the arrow) (as shown in the fifth figure).

As a result, the engaging portion 13 disengages from the locking portion 14 of the pushing member, and the pushing member 1 returns to its original state (shown in the sixth figure) by the elastic force of the spring S'. , the writing body 4 being pressed by the spring S' naturally also sinks into the barrel 16.

At this time, as shown in Figure 6, the pendulum 7a, which was tilted downward, returns to its original state due to the action of the spring S. This is due to the pressing force on the knocking member 7 when the above-mentioned writing state is obtained. This is the same as when .

As described above, the present invention provides the swinging member with an upper cam surface and a lower cam surface that have the same or different slope lengths at the top,
This cam surface is made up of a knocking member that faces the cam surface and is always positioned in a constant state (biased or opposite to the fulcrum of the swinging member) in a stationary state,
Since the movement of the cursive font can be realized by one action of the knocking member, the cursive font is moved out by the swinging movement of the swinging member, and a large amount of movement of the cursive font can be achieved with a small amount of knocking operation. It is possible to provide a simple, safe, and reliable writing device for the writing instrument to be obtained.

[Brief explanation of drawings]

Figure 1 is a partially omitted side sectional view of a writing instrument in which the present invention has been implemented, Figures 2 to 6 are side sectional views of the main parts explaining the operation of the present invention, and Figure 7 is a sectional view of the cam surface of the swinging member and the pendulum. FIG. 7 is an explanatory diagram showing a modification of the positional relationship. 1... Cursive pushing member, 1a... Slope, 2... Swinging member, 2a... Contact part,
3... Top of the cam surface, 5... Upper cam surface,
6... lower cam surface, 7... knock member,
7a...pendulum, 7b...exposed part, 9,
10... end face, 13... engaging portion, 14
...Locking part, P...Fully point, s, s'.
·····spring.

Claims (1)

[Scope of utility model registration request] It consists of a cursive pushing member 1 having one end formed as a slope 1a, and a swinging member 2 which has a contact surface 2a with the slope 1a of the cursive pushing member and swings around a fulcrum P. Part 2
In a writing instrument in which the holding part 13 is engaged with the locking part 14 of the writing body pushing member and the writing body 4 is fed out by the swinging movement of the writing instrument, the swinging member 2 has an axis passing through its fulcrum P. An upper cam surface 5 and a lower cam surface 6 are provided which have a top portion 3 that coincides with or deviates from the cam surface and are continuous, and the pendulum 7a is attached to the exposed portion 7b by the force of the elastic material S on these cam surfaces. The knock member 7 pressed against the end surface 10 of The pendulum 7a is fitted into the lower cam surface 6 when the locking part 13 of the swinging member is engaged with the locking part 14 of the pushing member.