JPH08156488A - Composite writing implement with build-in input pen - Google Patents

Abstract

PURPOSE: To surely prevent immersion of an input pen refill by abutting and retaining the oblique inner step of a pressing member to the oblique front end of a retainment projection part of the rear shaft in a composite writing implement in which both an input pen used for a handwriting input device of a pressure sensitive system and the writing implement are arbitrarily projected from the tip opening hole of the front shaft. CONSTITUTION: When the knock part 4A of a pressing member 4 connecting an input pen refill 6 is pressed by a finger to the front in the longitudinal direction, the pressing member 4 is advanced through the sliding groove 2A of the rear shaft 2. When the oblique inner step 4B of the pressing member 4 falls into the inside by this advancement and is retained in the front end 2C of a retainment projection part 2B of the rear shaft 2, the input member 6A of the input pen refill 6 is projected from the tip opening hole 1A. An oblique inner step 4B is tilted so as to be projected backward as it is advanced in the direction of the center axis and the front end 2C of the retainment projection part 2B is tilted so as to be depressed backward as the front end 2C is advanced in the direction of the center axis. Therefore, when the oblique inner step 4B is allowed to abut against the front end 2C, the pressing member 4 is made hard to come off and surely retained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite writing instrument with a built-in input pen, which is used for a pressure-sensitive handwriting input device by arbitrarily using the input pen and the writing instrument so as to protrude from a front end opening hole of a front shaft.

[0002]

2. Description of the Related Art Conventionally, there is known a composite writing instrument for writing by making an arbitrary ballpoint pen protrude by advancing a pressing member.

[0003]

However, in the conventional composite writing instrument, the pressing member is not reliably locked, and the pressing member may come off during writing. Therefore, when an input operation is performed by projecting the input pen with the pressing member, the pressing member is easily disengaged because the input pen is pressed with a strong force, and if the input operation malfunctions, a great deal of effort is required to correct it. It was necessary. It is an object of the present invention to provide an input pen that solves the above problems.

[0004]

In order to achieve the above object, the present invention comprises a front shaft and a rear shaft which is connected to the rear part of the front shaft and has a plurality of sliding grooves extending in the longitudinal direction formed at the rear part. A pressing member that is built in the rear shaft in the same number as the sliding groove and that has a knock portion protruding from the sliding groove and is slidable in the sliding groove in the longitudinal direction; and a refill connected to the front portion of each pressing member. , A spring that biases the pressing member rearward in the longitudinal direction. One of the refills is composed of an input pen, and the other refills are composed of writing instruments such as a ballpoint pen. The pressing member is formed with an inclined inner step so as to protrude rearward as it goes in the central axis direction, and a locking projection is formed on the rear shaft so that the front end is inclined so as to be recessed rearward as it goes in the central axis direction. To do. The knocking member is pushed forward in the longitudinal direction to move the pushing member forward, and the inclined inner step abuts and locks on the front end of the locking projection, whereby the pushing member is locked at the forward position, and the front portion of the pressing member. The gist of the present invention is that the tip of the refill connected to is projected from the tip opening hole of the front shaft. Therefore, since the inclined inner step of the pressing member is abutted and locked by the inclined front end of the locking projection of the rear shaft, even if a force is applied to the pressing member in the longitudinal direction rearward, the inclined inner step of the pressing member. Is reliably locked to the locking projection of the rear shaft.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1, 2, 3, 4, and 5. A rear shaft 2 is detachably screwed to a rear portion of a front shaft 1. The rear part of the rear shaft 2 has a longitudinally extending 2
The two sliding grooves 2A are formed facing each other. Further, a locking protrusion 2B extending in the longitudinal direction from both sides of each sliding groove 2A is formed, and a front end 2C of the locking protrusion 2B is recessed rearward as it goes in the central axis direction. Inclined. On the inner surface of the front portion of the rear shaft 2, there are formed an inwardly protruding detent portion 2D and two protrusions 2E. The inner shaft 3 is inserted from the tip of the rear shaft 2, the side cut portion 3A of the inner shaft 3 is engaged with the detent portion 2D of the rear shaft 2 and positioned so as not to rotate, and the outer side of the inner shaft 3 is The collar 3B rides over and is locked by the protrusion 2E formed on the inner surface of the rear shaft 2 and the protrusion 2F formed on the rotation stopping portion 2D. Two sliding grooves 2 on the rear shaft 2
Pressing members 4 and 5 made of synthetic resin are slidably inserted in A in the longitudinal direction.
A and 5A project outward from the sliding groove 2A. Inclined inner steps 4B, 5B are formed at the rear portions of the pressing members 4, 5, and the inclined inner steps 4B, 5B are inclined so as to protrude rearward in the direction of the central axis. Protrusions 4C and 5C protruding forward are formed at the front ends of the pressing members 4 and 5, and
Spherical portions 4D and 5D are formed at the front portions of C and 5C. The input pen refill 6 is composed of a conical input member 6A with a rounded tip and a resin pipe 6B into which the rear portion of the input member 6A is press fitted. A synthetic resin may be used as the material of the input member 6A. The pressing members 4, 5
One spherical portion 4D is press-fitted into the rear portion of the resin pipe 6B of the input pen refill 6, and the resin pipe 6B and the spherical portion 4D are bendably connected. The other spherical portion 5D of the pressing members 4 and 5 is press-fitted into the rear portion of the resin ink tank 7A of the ball-point pen refill 7 that is normally used, and the resin ink tank 7A and the spherical portion 5D are also bendable. Be connected. Although not shown, a disc-shaped portion may be formed in front of the protrusion of the pressing member, and the disc-shaped portion may be press-fitted into the resin pipe of the input pen refill and the ink tank of the ballpoint pen refill so as to be bendable. . The resin pipe 6B of the input pen refill 6 and the ink tank 7A of the ballpoint pen refill 7 have a sliding hole 3C attached to the inner shaft 3.
And is built into the front shaft 1. A coil spring 8 is externally fitted to the resin pipe 6B of the input pen refill 6 and the ink tank 7A of the ball pen refill 7, and the coil spring 8 is stretched between the inner shaft 3 and the front ends of the pressing members 4 and 5. To be done. Therefore, the pressing members 4, 5 are urged rearward in the longitudinal direction, and the shoulder portions 4E, 5 of the pressing members 4, 5 are
E is brought into contact with the rear stage 2G of the rear shaft 2.

Next, an operation of retracting the input pen refill 6 and the ball pen refill 7 will be described. In the retracted state of FIG. 1 described above, when the knocking portion 4A of the pressing member 4 to which the input pen refill 6 is connected is pressed forward by the finger in the longitudinal direction, the pressing member 4 advances in the sliding groove 2A of the rear shaft 2. When the pressing member 4 is appropriately advanced, the inclined inner step 4B of the pressing member 4 falls inward and is locked to the front end 2C of the locking projection 2B of the rear shaft 2, and the input member 6 of the input pen refill 6 is pressed.
A protrudes from the front end opening 1A of the front shaft 1 to be in the state shown in FIG. Moreover, as shown in FIG.
The inclined inner step 4B is inclined so as to protrude rearward as it goes in the central axis direction, and the front end 2C of the locking projection 2B of the rear shaft 2 is inclined so as to be recessed rearward as it goes in the central axis direction. When the inclined inner step 4B of the pressing member 4 is brought into contact with the front end 2C of the locking projection 2B of the rear shaft 2, the pressing member 4 is urged in the central axis direction, and the locking of the pressing member 4 is difficult to disengage. Locked in. Therefore, even if the tip of the input pen refill 6 is strongly pressed in this state to perform an input operation, there is no risk of the pressing member 4 being disengaged. Input pen refill 6
In order to immerse the press member, the pressing member 5 to which the ball-point pen refill 7 is connected is moved forward, and the inner protruding portion 5F formed on the pressing member 5 is brought into contact with the inner pin 4G formed on the pressing member 4 to press the pressing member 5. When 4 is pushed up in the outer peripheral direction, the inclined inner step 4B of the pressing member 4 is disengaged from the locking projection 2B of the rear shaft 2. Therefore, the input pen refill 6 is biased rearward in the longitudinal direction by the elastic force of the coil spring 8 and returns to the state of FIG. When the ball-point pen refill 7 is projected, the same operation as that of the input pen refill 6 is performed.

When the tip of the input pen refill 6 is damaged by repeated input operations, the front shaft 1 is unscrewed from the rear shaft 2 and the input pen refill 6 is removed from the spherical portion 4D of the pressing member 4. If a new input pen refill 6 is pressed into the spherical portion 4D of the pressing member 4, it can be easily replaced. Even when the ink in the ball-point pen refill 7 is used up, it can be replaced in the same manner.

Although not shown, the composite writing instrument with a built-in input pen of the present invention is not limited to the above-mentioned embodiment, and three sliding grooves are formed on the rear shaft at equal intervals, and each of them is formed. A pressing member may be built in the sliding groove, and the input pen refill may be connected to one pressing member and the two-color ballpoint pen refills may be connected to the other two pressing members. Further, the combination of the input pen refill and the writing implement refill may be a combination of three or more writing implement refills, and the writing implement refill is not limited to a ballpoint pen and may be a mechanical pencil.

Further, the means for connecting the refill to the pressing member is not limited to the means for directly connecting, and there is no problem even if they are connected through another member.

[0010]

As described above, according to the present invention, by operating the knocking portion of the pressing member with one hand, any refill can be easily projected or retracted, and memo writing can be easily performed during the input operation. Is. In addition, since the pressing member can be reliably locked, there is no possibility that the input pen refill will sink during the input operation, and the durability will be dramatically improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a composite writing instrument with a built-in input pen of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a cross-sectional view taken along line BB of FIG.

FIG. 4 is a cross-sectional view showing a state where an input pen is projected.

FIG. 5 is an enlarged cross-sectional view of a main part showing a locked state of an inclined inner stage of a pressing member and a locking projection of a rear shaft.

[Explanation of symbols]

 1 Front Shaft 1A Tip Opening Hole of Front Shaft 2 Rear Shaft 2A Sliding Groove of Rear Shaft 2B Locking Protrusion of Rear Shaft 2 4 Pushing Member 4A Knocking Portion of Pushing Member 4B Inclining Step of Pushing Member 4 5 Pressing member 5A Knock portion of pressing member 5B Inclining inner step of pressing member 5 Coil spring

Claims (1)

[Claims] 1. A front shaft, a rear shaft connected to the rear part of the front shaft, and having a plurality of sliding grooves extending in the longitudinal direction formed at the rear part, and the same number of sliding grooves as the built-in sliding grooves in the rear shaft. A pressing member having a knock portion protruding from the moving groove and capable of sliding in the sliding groove in the longitudinal direction,
A refill connected to the front of each pressing member and a spring that urges the pressing member rearward in the longitudinal direction. One of the refills is composed of an input pen, and the other refills are composed of writing instruments such as a ballpoint pen. , The pressing member is formed with an inclined inner step so as to project rearward as it goes in the central axis direction, and a locking protrusion that is inclined so that the front end is recessed rearward as it goes in the central axis direction while being formed in the rear shaft. The push member is formed by pushing the knock portion forward in the longitudinal direction to advance the push member, and the inclined inner step abuts and locks on the front end of the locking projection, whereby the push member is locked at the forward position, and the push member is pressed. The writing instrument with a built-in input pen, wherein the tip of the refill connected to the front part of the pen protrudes from the tip opening hole of the front shaft.