JP4330123B2 - Sliding multi-core writing instrument - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a slide-type multi-core writing instrument in which a plurality of writing bodies are arranged in a shaft cylinder.
[0002]
[Prior art]
Conventionally, as disclosed in Japanese Patent Application Laid-Open No. 2001-239791 “Slide-type multi-core writing instrument”, a plurality of writing bodies are arranged in a shaft cylinder, and a coil spring is provided at the rear end of each writing body. The slide members urged in the rear end direction of the cylinder are stored in a slidable manner with the raised portions formed on the slide members protruding from the windows formed at the rear end of the axis cylinder. By moving one raised part forward in the direction of the shaft cylinder, the locking part formed on one slide member is locked to one locked part formed on the rear end part of the shaft cylinder. The release protrusion formed on the other slide member comes into contact with one slide member by projecting the tip of the cursive body from the opening at the tip of the shaft cylinder and advancing the other raised portion toward the tip of the shaft cylinder. Release the locking of one locking part that was locked to the locking part, and the other The tip of the other writing body is moved to the tip of the shaft cylinder by advancing the protruding portion of the first cylinder toward the tip of the shaft tube and locking the other locking portion to the other locked portion formed at the rear end of the shaft tube. A slide-type multi-core writing instrument that can protrude from the opening is well known.
[0003]
Such slide-type multi-core writing instruments are provided with a plurality of different types of writing materials such as ink types and colors, ball diameters, mechanical pencils and ballpoint pens, etc. The difference in cursive letters was visually judged, such as displaying the ball diameter.
[0004]
By the way, in recent years, writing tools represented by universal design, which are easy for anyone to use, are attracting attention and demand. In such a case, in a slide type multi-core writing instrument, the shape of the raised portion formed on the slide member is changed. Therefore, a slide-type multi-core writing instrument is commercially available that judges a difference in cursive letters not only visually but also tactilely.
[0005]
[Patent Document 1]
"JP 2001-239791 A"
[0006]
[Problems to be solved by the invention]
However, since the raised portion is an operating body that causes the cursive body to appear and disappear, depending on the shape of the raised portion, the touch when touching the finger may be deteriorated, or the operability may be problematic. Even if the shapes are different, there is a problem that it is difficult to determine the difference in shape only at the portion where the finger comes into contact.
[0007]
An object of the present invention is to provide a slide-type multi-core writing instrument that can determine a difference in writing style not only by visual sense but also by an operational feeling.
[0008]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention achieves the above-mentioned object by providing a plurality of writing bodies in the shaft cylinder by urging them in the direction of the rear end of the shaft cylinder by means of coil springs, and raising the slide members attached to the rear ends of the respective writing bodies. The sliding member is slidably housed in a state of projecting outward from a window portion formed integrally with or attached to the rear end portion of the shaft tube, and the protruding portion is advanced in the direction of the shaft tube, thereby moving the slide member. The locking portion formed on the shaft cylinder is locked to the locking portion corresponding to the locking portion of the slide member, which is formed integrally with or attached to the rear end portion of the shaft cylinder, and the tip of the writing body is locked to the tip of the shaft cylinder. In a slide-type multi-core writing instrument protruding from the opening, the length of the locked portion corresponding to the locking portion of the slide member from the rear end of the cylinder is made different depending on the writing body, and the leading end of the writing body is immersed The operating distance for operating the raised part from the state to the protruding state It is made different by cursive.
[0009]
Moreover, the operation load which operates each said protruding part differs.
[0010]
In the present invention, the operation load is an operation load necessary for operating the protuberance and maintaining the writing tip in a protruding state, and contracts the spring that biases the writing body toward the rear end of the shaft cylinder. It is a load that combines the load and the frictional force between the components generated during operation. Since the operation load greatly depends on the spring force of the spring, as a practical problem, the operation load may be set by selecting the spring force of the spring.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to the same members and parts indicating the same portions.
The slide type multi-core writing instrument 1 of the present invention has a rear cylinder 3 screwed to a rear end portion of a front shaft 2 to form a shaft cylinder body, and a sliding hole in a compartment 18 disposed in the rear shaft 3. Two different types of writing bodies A and B are communicated with 18a, and are energized and housed behind the rear end 3a of the shaft cylinder by coil springs 16 and 17. The writing body A is press-fitted and mounted with a writing tip 20 made of a chip member holding a ball rotatably in a tip opening of a black oil-based ink (not shown). The writing body B has a writing tip portion 23 made of a tip member that rotatably holds a ball in a tip opening portion of an ink containing cylinder 21 that contains black shear-thinning ink (not shown). It is press-fitted through a chip holder 22. Further, the front end portions of the slide members 5 and 11 serving as operating bodies are press-fitted to the rear end openings of the ink storage cylinders 19 and 21, and the raised portions 6 and 12 of the slide members 5 and 11 are attached to the rear shaft 3. It is held in a state of protruding from the outer peripheral surface of the rear shaft 3 from the formed window portions 4 and 10.
[0012]
When using the cursive A, the raised portion 6 is advanced in the direction of the axial tube tip opening 2a, so that the locking portion 7 of the slide member 5 corresponds to the locking portion 7 formed on the rear shaft 3. By engaging with the locked portion 9, the writing tip portion 20 of the writing body A is used while maintaining the state protruding from the shaft tube tip opening portion 2 a. When using the cursive body B from this state, the release protrusion 14 of the slide member 12 is engaged with the locked portion 7 by advancing the raised portion 12 of the slide member 11 in the direction of the axial tube tip opening 2a. Abutting on the stopped slide member 5, the locking portion 7 is pushed out, the locking of the slide member 5 is released, and the original state is restored by the elastic force of the coil spring 16. Further, the protruding portion 12 is advanced in the direction of the axial tube tip opening 2a, whereby the locking portion 13 of the slide member 11 is locked to the corresponding locked portion 15, and the writing tip portion 23 of the writing body B is moved. The protruding state can be maintained and used.
[0013]
Moreover, the latching | locking part 13 of the slide member 11 is latched by the to-be-latched part 15 formed in the rear axis | shaft 3, and the state which protruded the writing front-end | tip part 23 of the writing body B from the axial cylinder front-end | tip opening part 2a is maintained. The release protrusion 8 of the slide member 5 is moved to the slide member 11 locked to the locked portion 15 by advancing the raised portion 6 of the slide member 5 in the direction of the axial tube tip opening 2a. It abuts, pushes out the locking portion 13, releases the locking of the slide member 11, and returns to its original state by the elastic force of the coil spring 17.
[0014]
The locked portions 9 and 15 formed on the rear shaft 3 are formed corresponding to the locking portions 7 and 13 of the slide members 5 and 11 attached to each writing body, and are locked from the rear end of the shaft cylinder. The length L is different from the portion 9 and the length M is different from the rear end of the shaft tube to the locking portion 15. (L <M) Similarly, the axial lengths of the windows 4 and 10 formed on the rear shaft 3 are different. Further, the total length of the slide members 5 and 11 and the positions of the release protrusions 8 and 14 are also locked by the length L from the rear end of the shaft tube to the locked portion 9 and the length M from the rear end of the shaft tube to the locking portion. And it is formed so that release can be dealt with.
[0015]
As a result, when the writing body A is used, the raised portion 6 is advanced in the direction of the shaft tube tip opening 2a, and the locking portion 7 of the slide member 5 is locked to the locked portion 9 formed on the rear shaft 3. The operating distance L ′ until the time when the writing body B is used, the raised portion 12 is advanced in the direction of the shaft tube tip opening portion 2a, and the engaging portion 13 of the slide member 11 is formed on the rear shaft 3. Since the operation distance M ′ until it is locked to the stop portion 15 is different (L ′ <M ′), the difference between the writing bodies A and B can be determined by the operation distance.
[0016]
Further, when the protruding portions 6 and 12 are advanced in the direction of the shaft tube tip opening portion 2a by making the elastic forces of the coil springs 16 and 17 biasing the writing bodies A and B in the direction of the rear end of the shaft tube different from each other. Therefore, it is easy to judge the difference between cursive letters A and B.
[0017]
The slide-type multi-core writing instrument accommodates a plurality of writing bodies, and is very convenient because the color and the ball diameter can be changed depending on the purpose. For example, in a blue, red, and black three-color ballpoint pen, Since the frequency of use of each cursive letter varies depending on the user, such as the frequency of use of black is higher than that of red and red, the operating distance of the slide member corresponding to the frequently used writing instrument is shortened and the operating load is reduced. It is preferable to set.
[0018]
In the present embodiment, for the sake of convenience, the locked portion and the window portion are formed in the shaft tube, but an attachment member formed with the locked portion and the window portion may be attached to the shaft tube.
[0019]
In addition, the slide type multi-core writing instrument of the present invention is not limited to the above-described multi-core writing instrument with two ballpoint pens. It can be used for a slide type multi-core writing instrument.
[0020]
【The invention's effect】
Since the present invention is configured as described above, it has been possible to provide a slide-type multi-core writing instrument that can determine the difference in writing style not only by visual sense but also by feeling of operation.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a slide type multi-core writing instrument according to a first embodiment.
FIG. 2 is a longitudinal sectional view showing a state in which the writing body A in FIG. 1 is projected.
FIG. 3 is a longitudinal sectional view showing a state in which the writing body B in FIG. 1 is projected.
FIG. 4 is a diagram in which a part of FIG. 1 is omitted.
FIG. 5 is an enlarged cross-sectional view of a main part in which a part of the moving state of the slide member is omitted.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Slide-type multi-core writing instrument 2 Front axis | shaft 2a Front end opening part 3 Rear axis | shaft 3a Shaft cylinder rear end 4, 10 Window part 5, 11 Slide member 6, 12 Protrusion part 7, 13 Locking part 8, 14 Release protrusion 9, 15 Locked portions 16, 17 Coil springs 20, 23 Writing tip L, M Distance L ′ from the rear end of the shaft tube to the locked portion, M ′ Operating distance for operating the raised portion

Claims (2)

In the shaft cylinder, a plurality of writing bodies are urged and arranged in the direction of the rear end of the shaft cylinder by a coil spring, and the raised portion of the slide member attached to the rear end of each writing body is integrated with the rear end section of the shaft cylinder. The locking part formed on the slide member is moved to the rear side of the shaft cylinder by slidably storing in a state of protruding outward from the window part formed on the attachment member, and by moving the protruding part forward in the direction of the tip of the shaft cylinder. A slide-type multi-core writing instrument that is engaged with a latched portion corresponding to the latching portion of the slide member, formed integrally with the end portion or attached to the end portion, and the tip end portion of the writing body projects from the tip end portion of the shaft cylinder The length of the raised portion from the rear end of the shaft cylinder of the locked portion corresponding to the locking portion of the slide member to the protruding state is changed from the immersive state to the protruding state. The operation distance to operate the part is different depending on the cursive type Sliding of the multi-core writing instrument. The sliding multi-core writing instrument according to claim 1, wherein operation loads for operating the raised portions are different.

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