JP2587826Y2 - Eraser - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention is liquid for erasers to conduct in the chip (hereinafter referred to as "use solution".) Of the tip end shape
The present invention relates to an improvement in a pen-type eraser that allows an appropriate amount of liquid to flow out through an erasing liquid adjustment ball (hereinafter, referred to as a "liquid adjusting ball") .

[0002]

2. Description of the Related Art Conventionally, a erasing tool which has a conducting portion for erasing in a chip and appropriately adjusts an outflow amount of a solution by a solution adjusting ball disposed at the tip of the chip has been known. The ball is caulked to the tip of the chip and supported by a spring disposed in the chip. On the other hand, the spring has the same diameter over its entire length and is provided on the base side of the chip. It was fixed by engaging with a stop projection or the like. That is, after the solution adjusting ball is fitted into the tip of the chip, the tip of the tip is swaged and the solution adjusting ball is rotatably fixed. In a state where it is properly pressed, a spring having a length in contact with both the fixed liquid adjusting ball and the locking projection provided on the tip base side is inserted from the tip base, and the spring is inserted. Of the chip is brought into contact with the liquid adjustment ball, and the other chip base is engaged with a locking projection provided on the base of the chip. As a result, when this eraser is not used,
Since the spring always presses the liquid adjusting ball against the caulked portion at the tip of the chip, there is no gap between the tip of the chip and the liquid adjusting ball, and the liquid stored in the liquid conducting portion in the chip is removed. It does not flow out from the tip,
On the contrary, the outside air does not flow into the liquid conducting portion and does not adhere to the liquid. On the other hand, when the eraser is used, the eraser is pressed and moved with respect to the portion to be used while the eraser is being raised, so that the liquid adjusting sphere moves toward the inside of the chip by the pressing force, When a gap is formed between the tip and the gap, the liquid for conducting the liquid conducting section flows out from the gap to a portion to be used such as a character on the paper surface to erase the character or the like, and when this pressing is stopped. Since the spring presses the liquid adjusting ball toward the tip of the tip with the locking projection provided at the rear end of the tip as a base point, the spring returns to the original state again.

[0003]

However, in the above-mentioned conventional eraser, the diameter of the spring used is the same over the entire length. Since it is necessary to reduce the diameter of the liquid adjusting ball, the diameter of the spring must always be smaller than the diameter of the liquid adjusting ball, so that it is difficult to manufacture a small-diameter spring having sufficient elasticity. At the same time, an extra gap is created between the wall of the hollow part in the tip where the spring is inserted and the spring,
When the liquid adjusting ball is pressed from the tip end side, there is a risk that the spring itself is bent and twisted. Second, in the manufacturing process of the eraser, if a spring is inserted into the chip from the tip end side first, and then a tip adjusting portion is inserted and the tip end portion is caulked, the spring will be Since the adjustment ball is pressed toward the tip of the chip, it is difficult to fix the solution adjustment ball at an appropriate position at the tip of the tip in the caulking operation. After inserting and caulking the tip end, if you try to insert the spring from the tip base, the spring must be inserted beyond the locking projection provided on the tip base, so that the spring is inserted into the tip. There is a drawback that insertion becomes difficult. In addition, since the liquid adjustment ball is only supported by the spring inside the chip, when the liquid adjustment ball is strongly pressed toward the chip base portion side during use, the tip of the chip and the liquid adjustment ball may be in contact with each other. Unnecessarily wide gaps are likely to be formed between them, and there is a danger that the solution drops.

[0004] Therefore, the present invention is to improve the above-mentioned disadvantages of the prior art, always ensuring the elasticity of the spring, preventing dripping of the liquid for use, and simplifying the manufacture of the eraser itself. Is what you do.

[0005]

To this end, a liquid adjusting ball receiving step is provided inside the tip of the chip, and a rod-shaped member having a pedestal is provided inside the chip, and the outer periphery is pressed against the inner diameter of the chip at the base. After arranging the spring to
The distal end of a spring substantially compressed to the chip base side of the pedestal portion of the rod-shaped member, and the distal end of the rod-shaped member are brought into contact with a liquid adjusting ball.

[0006]

With the above construction, the tip of the rod-shaped member abuts on the liquid adjusting ball to act on the tip of the tip of the liquid adjusting ball. Since the liquid adjusting ball is supported by the liquid adjusting ball receiving step together with the rod-shaped member, unnecessary depression of the liquid adjusting ball into the chip due to the pressing force during use is prevented, and the liquid dripping drops. In addition, the diameter of the spring is adjusted so that it is in contact with the inner diameter of the tip at the base and slightly smaller than the other part, so that the pressing force direction from the liquid adjustment ball should be Even if the spring is deflected in the direction in which the spring is arranged, the spring can be prevented from being bent by pressing the outer periphery of the spring against the inner wall of the chip. That of the can also be prevented. Furthermore, since the liquid adjusting ball is supported by the liquid adjusting ball receiving step, the liquid adjusting ball is easily inserted into the tip of the chip, and the positioning of the liquid adjusting ball is easy when caulking the tip. In addition, since an excessively large pressing force is not applied to the spring when the eraser is used, a locking projection for locking the spring at the base of the chip can be omitted. After the tip of the tip is swaged by inserting the liquid adjusting ball, the rod-shaped member is inserted from the base side thereof, and the spring can be easily inserted, thereby simplifying the manufacturing operation process.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. (1) is a chip of the eraser provided with the embodiment of the present invention, the inside is hollow and has a liquid conducting part (3), (2) is a liquid adjusting ball, The tip of the tip (1) was caulked in a state of being inserted into the tip of the tip (1) and being in contact with the liquid adjusting ball receiving step (4) provided on the inner wall surface of the tip of the tip (1). The caulked portion (5) is fixed so as to protrude slightly from the tip of the tip (1) and to be rotatable, and not to be detached from the tip of the tip (1). (6)
Is a spring, which is divided into two parts, a spring tip (6A) and a spring base (6B), according to its diameter. The spring tip (6A) is longer than the spring base (6B). Spring base (6B)
Is pressed against the inner diameter of the tip (1), and the diameter of the spring tip (6A) is slightly smaller than the diameter of the spring base (6B). The winding density of the spring (6) is such that the foremost part and the middle part of the tip part (6A) of the spring and the spring base part (6B) are formed densely, and the other parts are formed sparsely. The spring (6) is inserted into the liquid conducting portion (3), which is a hollow portion in the chip (1), and the spring (6) is half-compressed. A cylindrical spring receiving shaft (8) protruding from the rear end side of the member (7) is fitted, and abuts against the rear end face of the pedestal portion (9) of the pedestal rod member (7). In addition, this pedestal part (9)
Has a shape obtained by connecting a cylindrical shape and a truncated cone shape.
On the other hand, the spring base (6B) is housed in the tip (1). (10) is a rod-shaped part, and a liquid adjusting ball (2).
A cylindrical shape having a diameter smaller than the diameter of the tip, protrudes from the pedestal portion (9) to the tip side, and the tip is used while the spring (6) is partially compressed and abuts the pedestal portion (9). Each position is adjusted so as to contact the rear end of the liquid adjustment ball (2). (11) is a shaft cylinder, which inserts and holds the tip (1) on the base side of the tip (1).

[0008] Since the present invention has the above configuration, first,
The liquid adjusting ball (2) is inserted into the tip of the chip (1), and the liquid adjusting ball (2) is locked by the liquid adjusting ball receiving step (4). Caulking the department,
A caulking portion (5) is formed to fix the liquid adjusting ball (2) slightly protruding at the tip of the chip (1) so as to be rotatable and non-separable. Then, a rod-shaped member (7) with a pedestal is inserted from the base side of the chip (1) into the chip (1) with the rod-shaped part (10) at the head.
A), the spring (6) is inserted, and the spring receiving shaft (8) of the bar-shaped member (7) with the pedestal is fitted into the spring tip (6A), and the tip of the rod (10) has a liquid adjusting ball. (2) The outer periphery of the spring base (6B) is pressed into the tip (1) until it comes into contact with the rear end and the spring (6) is partially compressed. Then, a liquid is injected from the base of the chip (1) into the liquid conducting part (3), and the shaft cylinder (11) is fixedly joined to the base of the chip (1) to form a eraser. You.

Since the spring base (6B) abuts against the inner wall of the chip (1) and the frictional force supports the pressing force of the spring (6) toward the base, the eraser according to the present invention is provided. When not used, the rod (10)
Presses the solution adjusting ball (2) toward the tip (1) tip side, and strongly contacts the solution adjusting ball (2) to the inner surface of the caulking portion (5) at the tip (1), thereby conducting the solution. Department (3)
The liquid in the liquid is prevented from flowing out from the gap between the liquid adjusting ball (2) and the inner surface of the caulking portion (5). On the other hand, when using the eraser according to the present invention, the eraser is set up and the tip (1) is pressed from above while the liquid adjusting ball (2) at the tip of the tip is in contact with the part to be erased. As a result, the solution adjusting ball (2) moves to the base side of the chip (1) until it is pressed against the solution adjusting ball receiving step (4), and the solution adjusting ball (2) and the caulking portion (5). A gap is formed between the inner surface and the inner surface, and a liquid to be erased therefrom is erased, such as characters on the paper surface. Further, if the eraser itself is moved along the object to be erased while rotating the solution adjusting ball (2), the solution continuously flows out with the rotation, and the object to be erased is continuously moved. Can be erased. Then, when the pressing force from above on the eraser itself is released, the liquid adjusting ball (2) is pressed by the rod-shaped part (10) toward the tip (1) and moves, returning to the unused state. I do.

By the way, when the eraser in the conventional example is used, the pressing force from the tip end side of the liquid adjusting ball is received only by the spring, so that excessive pressure is applied to the liquid adjusting ball. Easy to hang on,
As a result, the liquid adjusting ball may be unnecessarily immersed in the base of the chip, causing an excessive gap between the liquid adjusting ball and the inner surface of the caulking portion, which may cause dripping of the liquid during use of the eraser. was there. In contrast, in the eraser of the present invention,
The liquid adjusting ball (2) and the caulking portion are defined by the liquid adjusting ball receiving step (4) defining the fixed range of the liquid adjusting ball (2) into the chip (1) due to the pressing force. (5) An excessive gap is not generated between the inner surface and the inner surface, so that a constant amount of outflow of the solution can always be secured, and the spring () is provided via the solution adjusting ball (2) and the rod-shaped member with base (7). Since the pressing force applied to 6) is also limited to a certain range, the fixing of the spring (6) on the spring base portion (6B) side to oppose the pressing force is performed in the spring base portion (6B).
And the inner wall surface of the chip (1).

Further, since the diameter of the spring tip (6A) is configured to be slightly smaller than the diameter of the inner wall of the tip (1), the tip (1) is pressed from the tip (1) when the eraser is used. When the spring tip (6A)
Can be guided by the inner wall surface of the tip (1), so that the spring (6) can be prevented from bending or twisting. Furthermore, even if a large number of springs (6) are prepared and mixed in advance in the manufacturing process by mixing sparse and dense with the winding density of the springs (6), the large number of springs (6) are mixed. ) Do not cross each other.

[0012]

[Effect of the invention] As described above, this invention is composed,
It has a simple configuration, and can reduce the cost by reducing the manufacturing process of the eraser, and at the time of use, prevents dripping of the liquid for use and prevents bending and twisting of the spring. This has an excellent effect of ensuring uniform erasure of an object such as a character on paper.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a tip of a character eraser having an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Liquid adjustment ball for 2 chips 3 Liquid conduction part for 4 Liquid adjustment ball receiving step part 5 Caulking part 6 Spring 6A Spring tip part 6B Spring base part 7 Pedestal rod member 8 Spring receiving shaft 9 Pedestal part 10 Rod part 11 Shaft 11 Tube

Claims (1)

(57) [Scope of request for utility model registration] 1. A chip having a liquid erasing part for erasing in a chip, and a liquid adjusting ball provided at the tip of the chip is allowed to protrude and retract with respect to the tip of the chip via a spring disposed in the chip.
A liquid adjusting ball receiving step is provided inside the tip of the chip, a rod-shaped member having a pedestal is inserted into the tip of the tip, and a spring is provided at the base to press the outer circumference against the inner diameter of the tip. A character eraser formed by bringing the tip of the rod-shaped member into contact with the liquid adjusting ball.