JPH08295094A - Agitator for writing instrument - Google Patents

Abstract

PURPOSE: To rapidly and efficiently redisperse the solid component of ink by improving the comminuting action of cake. CONSTITUTION: An agitator A contained in a barrel C together with ink B in which solid and liquid components are separated to comminute cake B-1 formed by precipitating and aggregating the solid component of the ink B at the time of vigorously shaking the barrel C and to agitate to redisperse the solid component comprises a weight 1 and an elastic member 2 elongated or contracted at the time of vigorously shaking the barrel C, wherein the weight 1 is connected to the member 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cake which is housed together with ink for solid-liquid separation in a barrel of a writing instrument such as an applicator or a ballpoint pen, and which is formed by solidifying and agglomerating solid components of the ink when left standing. The present invention relates to an improvement of a stirrer that functions to pulverize a shaft cylinder when shaken vigorously and to stir it to redisperse solid components in a liquid.

[0002]

2. Description of the Related Art Conventionally, as a stirrer for a writing instrument of this kind, there has been disclosed in Japanese Utility Model Publication No. 59-93774 (hereinafter, the former) or Japanese Utility Model Publication.
It is known in Japanese Patent Publication No. 62-28453 (hereinafter, the latter). For example, the former illustrated in FIG. 5 is housed in the barrel C together with the ink B which is formed into a spherical shape and undergoes solid-liquid separation, and when the barrel C is vibrated violently during use, it violently moves in the barrel direction, and its impact force The cake B-1 is crushed and the solid component of the ink B is redispersed in the liquid.

On the other hand, the latter is housed and held in the former by an elastic elastic body housed in the bottom of the shaft cylinder (cylinder bottom) at a height higher than the height of the cake, so that the latter is not buried deep in the cake. When the shaft cylinder vibrates violently, it collides violently with the elastic elastic body, and shock vibration is applied to the elastic elastic body to crush the cake by the vibration to redisperse the solid components of the ink in the liquid. is there.

[0004]

However, although the latter is constructed so as to solve the former problem,
The spherical stirrer is housed in the barrel in a state where it is separated from the elastic elastic body, so that it is not buried in the cake formed by the solid components of the ink that settle and agglomerate with the passage of time when left standing. Similarly, it is held in a state of being mounted on the elastic elastic body. Therefore, when the shaft cylinder is vigorously shaken, only the stirrer moves back and forth in the shaft cylinder, and the stretchable elastic body remains buried in the cake. That is, the crushing action of the cake is obtained only by the stretching force of the stirrer when the impact force of the stirrer when the shaft cylinder is vigorously shaken is transmitted to the stretchable elastic body and acts on the stretchable elastic body. The original crushing action cannot be obtained. Especially when the cake has become a hard cake state by leaving it for a long time, it is not possible to completely and quickly redisperse the solid component by crushing the cake only by the stretching vibration of the stretching elastic body, In order to completely crush the cake and re-disperse the solid component, a large number of vigorous shakings of the barrel have to be repeated, and the handleability is poor, and its improvement has been desired.

The present invention has been made in view of such conventional circumstances, and has been improved so that the solid component of the ink can be rapidly and efficiently redispersed by improving the crushing action of the cake. The purpose is to provide a stirring bar for use.

[0006]

The technical means taken by the present invention to achieve the above-mentioned object is contained in a barrel together with ink for solid-liquid separation, and the solid component of the ink is formed by sedimentation and aggregation. In a stirrer for a writing instrument that crushes a cake when the barrel shakes violently and re-disperses the solid components by stirring, a weight body and an elastic body that expands and contracts when the barrel shakes violently. The gist is that it is connected to an elastic body.

Further, the gist is that the elastic body is formed to have an appropriate height, and stir bars are connected to both ends of the elastic body.

Further, the gist is that the weight body is formed in a rod shape, a connecting portion is provided at least at one end thereof, and the elastic body is connected to the connecting portion.

[0009]

According to the technical means described in claim 1 of the present invention described above, when the shaft cylinder is vibrated violently, the elastic body is separated from the cake by the self-weight of the weight body and the inertia force due to the vigorous vibration. It is pulled out and moves violently in the cylinder direction together with the weight body. Thereby, the crushing of the cake is immediately started, and the crushing of the cake is surely and completely crushed by the impact force of the weight body and the vibration of the elastic body.

According to the technical means described in claim 2, when the shaft cylinder is vibrated violently, the elastic body is pulled out from the cake by the self-weight of the rod-shaped weight body and the inertial force due to the violent vibration, and together with the rod-shaped weight body. Moves violently in the cylinder direction. As a result, the crushing of the cake is immediately started as in the first aspect, and the crushing of the cake is surely and completely crushed by the impact force of the weight body and the vibration of the elastic body.

According to the technical means described in claim 3, since the weight body is connected and provided at both ends of the elastic body, when the stirrer is assembled and housed in the shaft cylinder, the assembling direction thereof. Don't make a mistake. Thereby, the assemblability is improved.

[0012]

EXAMPLE An example of the embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view and a vertical sectional view showing a first embodiment of the stirrer A of the present invention. The body 2 is connected, and the barrel C and the ink B for solid-liquid separation are connected.
The cake B-1 which is housed inside and formed by sedimentation and aggregation of the solid component of the ink B when left standing is crushed by vigorous shaking of the barrel C to redisperse the solid component in the liquid.

The weight body 1 is formed in a rod shape having a proper weight and an appropriate length and thickness, and a large diameter step portion 3 is formed in a part thereof.
And the connecting portion 4 is provided, and the elastic body 2 is integrally connected to the connecting portion 4 by press fitting or screwing.

The elastic body 2 contracts due to an inertial force that moves in the cylinder direction together with the weight body 1 when the shaft cylinder C vibrates violently and a load stress such as the weight of the weight body 1, and expands when the load stress is released. Repeating the above expansion and contraction, the cake B-1 together with the weight body 1 are crushed quickly and efficiently. That is, the solid component is rapidly and efficiently redispersed in the liquid, and the coil outer diameter is approximately the same as the thickness of the weight body 1, and the connecting portion 4 of the weight body 1 is used.
It is a spring formed into an appropriate length having an inner diameter of a coil that can be connected by press fitting.

The elastic body 2 has a spring force (repulsive force) equal to or greater than the weight of the weight body 1. More specifically, the weight body 1 is held in the stretched state when left standing. Then, the spring force that is reduced by the self-weight of the weight body 1 and the inertial force caused by the movement when the shaft cylinder C is violently moved and violently moves in the cylinder direction and collides with the cake B-1 and the cylinder bottom of the shaft cylinder C. Set to. Further, the height L ₁ of the elastic body 2 is formed to be approximately the same as the height L ₂ of the cake B-1, and the large diameter stepped portion 3 of the weight body 1 is formed on the cake B-in a state of being left as it is.
Make sure that you do not dive within 1 (see (b) in Figure 1).

When left unattended, the stirrer A becomes the elastic body 2
Is present on the bottom side of the cylinder C while being in contact with the bottom of the cylinder C,
The elastic body 2 is contained in the cake B-1 formed by the solid components of the ink B that settles and aggregates on the bottom of the shaft cylinder C with the passage of time.
Is in a buried state, and the weight body 1 is not buried in the cake B-1 (state in FIG. 1B). Therefore, the cylinder C
When shaken violently, the elastic body 2 is pulled out from the cake B-1 by the self-weight of the weight body 1 and the inertial force due to the violent vibration.
Along with that, it moves violently in the cylinder direction. As a result, cake B-
The crushing of 1 starts immediately (state of Figure 2 (a)). Then, the stirrer A moved toward the tip end port 5 of the shaft cylinder C is the shaft cylinder C.
When returning to the bottom of the cylinder, the elastic body 2 that moves violently together with the weight body 1 collides with the weight body 1 while the cake B-1 remaining uncrushed is crushed into the bottom of the shaft cylinder C, and at the same time the elastic body 2 is crushed.
Is reduced by the weight of the weight body 1 and the inertial force acting on the weight body 1 (the state shown in FIG. 2B), and the weight body 1 moves violently in the barrel C together with the weight body 1 to extend. (State of the two-dot chain line in FIG. 2B).

Therefore, according to the stirrer A of such an embodiment,
The cake B-1 is crushed by the elastic body 2 from the time when the shaft cylinder C is vigorously shaken, and in addition to the impact force (crushing action) of the weight body 1, the cake B-1 is shaken by the vibration during the expansion and contraction. B-
The crushing action of 1 is promoted. That is, the synergistic action of the original impact force of the weight body 1 and the vibration acting on the elastic body 2 surely and completely crushes the cake B-1 to rapidly and efficiently redisperse the solid component in the liquid. You can

FIG. 3 shows the stirring bars A-1 and A- of the second and third embodiments.
2 shows that the stirrers A-1 and A-2 of this embodiment have a weight 1-1 which is short and has connecting portions 4 at both ends sandwiching the large-diameter stepped portion 3, respectively. The body 2 is connected by press fitting. That is, the stirrer A-1 shown in (a) connects the elastic body 2 to the connecting portion 4 at one end of the weight body 1-1, while the stirrer A-2 shown in (b) is the weight body 1-. The elastic body 2 is connected to the connecting portions 4 at both ends of 1. In this embodiment, basically the same components as those in the above-mentioned detailed description are designated by the same reference numerals and the detailed description thereof will be omitted.

Thus, according to the stirrers A-1 and A-2 of this embodiment, the connecting direction of the elastic body 2 with respect to the weight body 1-1 will not be mistaken (see FIG. 3 (a)). . Also, there is no mistake in the assembling direction when assembling and housing in the barrel C (see FIG. 3B). Therefore, cake B-1 as described above
In addition to the function and effect of reliably and completely crushing the solid component of the ink B into the liquid rapidly and effectively, the assembly is facilitated and the productivity can be improved.

FIG. 4 shows a stirrer A-3 of the fourth embodiment. The stirrer A-3 of such a embodiment has a weight body 1-2 connected to both ends of an elastic body 7, and a barrel C. When the shaker is vigorously shaken, the weight 1-2 at one end collides with the cake B-1 and the impact force that impacts the bottom of the cylinder, and the vibration acting on the elastic body 2 causes the cake B-1 to be crushed surely and completely. The solid component of the ink B can be rapidly and effectively redispersed in the liquid.

The weight body 1-2 is formed in a spherical shape having an appropriate diameter (sphere diameter), and the connecting portion 6 is provided on the outer circumference thereof. On the other hand, the elastic body 7 is formed to have the outer diameter and inner diameter of the coil as described in detail in the above embodiment, and the height L ₃ including the diameter of the weight body 1-2 at one end is set to the height of the cake B-1. It is formed to the same extent as L ₂ .

The weight body 1-2 connected to both ends of the elastic body 7
The size (diameter) of both may be the same, or
You can change the size. For example, the size of the weight body 1-2 on the other end side, which is buried in the cake B-1 together with the elastic body 7, is larger than that of the weight body 1-2 on the other end side when left unattended. is there. Further, the shape of the weight body 1-2 may be rod-like as described in detail in the above embodiment, or may be rod-like and substantially trapezoidal with both end edges chamfered, or plate-like. In short, the shape of the weight body 1-2 is not limited as long as the shape allows the crushing action of the cake B-1 and the stirring action of the solid component into the liquid.

Thus, according to the stirrer A-3 of this embodiment, the assembling direction when assembling and accommodating in the barrel C will not be mistaken. Then, when left standing, the elastic body 7 and the weight body 1-2 at one end thereof are buried in the cake B-1 formed on the bottom of the shaft cylinder C by the solid component of the ink B that settles and aggregates. , Weights 1-2 at the other end are cakes
It is never buried in B-1. Therefore, when vibrating the cylinder C violently, the elastic body 7 is moved from the cake B-1 to the weight body 1-2 at one end.
It is pulled out together with the weight bodies 1-2 at both ends and violently moves in the axial cylinder C in the cylinder direction. As a result, the crushing of the cake B-1 immediately starts as in the above-described example. Then, when the stirrer A-3 moved in the direction of the tip end port 5 of the shaft cylinder C returns to the cylinder bottom of the shaft cylinder C, the weight body 1-2 at one end is smashed into the cake B-1 which remains uncrushed. The impact force causes the cake B-1 to be crushed and collides with the bottom of the barrel C. At the same time, the elastic body 2 collides with the cake B-1 at one end against the cake B-1 and the bottom of the shaft cylinder C, the weight of the weight body 1-2 at the other end, and the weight body 1-2.
Both vibrations are applied due to the contraction due to the inertial force acting on and the expansion from the contracted state. That is, the weight body 1-2 at one end collides with the cake B-1 and the bottom of the barrel C, and at the same time, the weight body 1-2 at the other end vibrates the elastic body 7 to crush the cake B-1. A promoting synergistic effect is obtained. As a result, the crushing of the cake B-1 can be reliably and completely crushed by vigorous shaking a smaller number of times than the conventional product, and the solid component of the ink B can be rapidly and effectively redispersed in the liquid.

[0024]

Since the stirrer for a writing instrument of the present invention is constructed as described above, it has the following operational effects. ． When the shaft cylinder is shaken violently, the elastic body is pulled out from the cake by the weight of the weight body and the inertial force due to the shake, and violently moves in the cylinder direction together with the weight body. It is carried out immediately, and in addition to the impact force (crushing action) of the weight body, it is promoted by the vibration at the time of expansion and contraction that acts on the elastic body, and it is surely and completely crushed. That is, the synergistic action of the original impact force of the weight body and the vibration acting on the elastic body can surely and completely pulverize the cake to rapidly and efficiently redisperse the solid component in the liquid.

[0025]. When the shaft cylinder is vigorously shaken, the elastic body is pulled out from the cake by the self-weight of the rod-shaped weight body and the inertial force due to the violent movement, and moves violently in the cylinder direction together with the rod-shaped weight body.
As a result, similarly to the above, the crushing of the cake is immediately started, and the crushing force of the weight body and the vibration of the elastic body reliably and completely crush the cake.

.. Since the weight body is connected and provided at both ends of the elastic body, when the stirrer is assembled and housed in the barrel, the assembly direction is not mistaken. Thereby, the assemblability is improved.

Therefore, according to the stirrer for a writing instrument of the present invention, since the cake can be crushed by the synergistic effect of the original impact force of the weight body and the vibration acting on the elastic body, it can be shaken several times. The cake can be crushed reliably and completely to redisperse the solid components in the liquid quickly and efficiently. Further, since there is no direction to assemble the shaft cylinder, the assembly is facilitated and the productivity can be improved.

[Brief description of drawings]

FIG. 1A is a perspective view showing a first embodiment of a stirrer for a writing instrument of the present invention, and FIG. 1B is a vertical cross-sectional view showing a state in which it is housed in a barrel together with ink for solid-liquid separation.

FIG. 2 is a longitudinal sectional view of a main part showing a crushing process of the cake when the shaft cylinder is vigorously shaken, (a) shows a state immediately after the elastic body is pulled out from the cake, (b) shows Shows the state where the elastic body crashed into the cake and crushed

FIG. 3A is a perspective view showing a second embodiment of the writing tool stirrer of the present invention, and FIG. 3B is a perspective view showing a third embodiment of the writing tool stirrer of the present invention.

FIG. 4 is a perspective view showing a fourth embodiment of the stirrer for a writing instrument of the present invention.

FIG. 5 is a vertical sectional view showing a conventional example.

[Explanation of symbols]

 A, A-1, A-2, A-3 ... Stirrer B ... Ink 1,1-1, 1-2 ... Weight body B-1 ... Cake 2,7 ... Elastic body 3 ... Large diameter step portion 4, 6 ... Connection part

Claims (3)

[Claims] 1. A cake, which is housed in a barrel together with ink for solid-liquid separation, and which is formed by sedimentation and aggregation of solid components of the ink, is crushed when the barrel is vigorously shaken, and stirred to redisperse the solid components. In the stirrer for writing instruments to be made up, it is composed of a weight body and an elastic body which expands and contracts when the shaft cylinder vibrates vigorously,
A stirrer for a writing instrument, comprising a weight body and an elastic body connected to each other. 2. The stirrer according to claim 1, wherein the weight body is formed in a rod shape, a connecting portion is provided at least at one end thereof, and an elastic body is connected to the connecting portion. Stirrer. 3. The stirrer for a writing instrument as claimed in claim 1, wherein the elastic body is formed to have an appropriate height, and weight bodies are connected to both ends of the elastic body.