JPH08266990A - Applicator - Google Patents

Abstract

PURPOSE: To achieve the stability and certainty of a valve closed state by providing a seat part receiving a spherical coating element in a freely rotatable manner to the leading end of a push element and providing an engaging part engaging one end of a spring to the leading end side thereof and engaging the other end of the spring with the stepped part of a leading end holder. CONSTITUTION: After a spherical coating element 4 is put in a tip 3 from the rear end opening of the tip 3, a push element 5 in which a spring 6 is incorporated in the state engaged with an engaging part 10 at one end thereof is incorporated in the tip 3 and the rear end connection part 3a of the tip 3 is inserted in the leading end port 2a of a leading end holder 2 under pressure until it comes into contact with the stepped part 8 of the bottom of the leading end port 2a. Whereupon, the other end of the spring 6 is engaged with the stepped part 8 of the bottom of the leading end port 2a and the push element 5 is elastically pushed toward the liquid coating port 7 of the leading end of the tip 3 and brings the spherical coating element 4 into contact with the inward mouth edge 7a of the liquid coating port 7 in such a state that the spherical coating element 4 is received in a freely rotatable manner by a leading end seat part 9. By this constitution, the contact state of the spherical coating element 4 with the entire periphery of the mouth edge 7a is stabilized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an applicator for applying a correction fluid to an erroneous portion, and particularly to a valve for controlling an ejection amount (application amount) of the correction fluid to an erroneous portion to prevent an excessive ejection of the correction fluid. The present invention relates to an applicator provided with a mechanism.

[0002]

2. Description of the Related Art Generally, the valve mechanism in this type of applicator causes a spring to cause a spherical applicator to come into contact with the inward edge of the liquid application port at the tip of the tip, thereby closing the liquid application port and closing the correction liquid. Is not discharged. Then, the spherical applicator is moved backward toward the inside of the chip so as to be separated from the liquid application port against the spring so that the liquid application port is opened and the correction liquid is discharged. More specifically, the correction liquid supplied from the liquid tank to the spherical applicator is discharged from the gap formed by the backward separation of the spherical applicator between the inward edge of the liquid application port and the spherical applicator. ing. Therefore, the amount of correction liquid discharged from the liquid application port is such that if the amount of backward movement of the spherical applicator that separates from the liquid application port against the spring is large, the gap will be wide open and the correction liquid will be excessive. Discharge. That is, the discharge amount of the correction liquid changes according to the opening degree of the gap formed between the inward edge of the liquid application port and the spherical application body.

Conventionally, as an applicator having a valve mechanism for preventing the excessive discharge of the correction fluid, the one shown in FIGS. 6 to 7 has been known (Actual Publication No. 6-21977). Such a conventional valve mechanism has a spherical applicator between the liquid application port 23 formed by squeezing the tip edge of the tip 22 inward and the seat portion 25 provided at the tip of the tubular body 24 arranged in the tip 22. Holds 26 so that it can be moved back and forth and is rotatable, and one end of a spring 27 is brought into contact with the spherical applicator 26 to repel the spherical applicator 26 toward the liquid application port 23,
A part of the spherical applicator 26 is placed so as to project to the outside while being in contact with the inward edge 23a of the liquid applying port 23, and the part of the spherical applicator 26 protruding at the time of application is pressed against the paper surface. The correction liquid M is applied to the paper surface by retracting the spherical application body 26 against the spring 27 from the liquid application port 23 until it comes into contact with the seat portion 25 of the cylindrical body 24. . However,
In the conventional valve mechanism, the spherical applicator 26 comes into contact with the seat portion 25 of the cylindrical body 24 (see the enlarged view shown by the chain double-dashed line in FIG. 6), whereby the spherical applicator 26 moves backward from the liquid application port 23 ( The degree of opening of the gap between the inward edge of the liquid application port and the spherical application body)
Is regulated to prevent the excessive discharge of the correction fluid.

[0004]

However, in the valve mechanism of the conventional applicator, one end of the spring is brought into direct contact with the spherical applicator to bring the spherical applicator into contact with the inward edge of the liquid application port. Since the liquid application port is closed, it is difficult to cause the spherical applicator body to be uniformly elastically ejected in the direction of the liquid application port with the entire spherical application body aligned with the opening center of the liquid application port. That is, since there is a non-contact portion at the end of the spring with no connection between the spiral end (end) and the middle of the spiral (see FIG. 7), the spherical coating It is difficult to make the body spread along the opening center of the liquid application port evenly in the direction of the liquid application port so as to evenly contact the entire circumference of the inwardly facing edge, and the spherical application body must be applied by the liquid application. A core misalignment occurs with respect to the opening center of the mouth, and as a result, the contact of the spherical coating body with the inward edge of the liquid coating mouth becomes unstable,
There is a possibility that a part of the spherical applicator does not come into contact with the inward rim and a gap is generated between the inward rim and the correction fluid is inadvertently discharged ( (See the enlarged view of FIG. 6), but that improvement was necessary.

The present invention has been made in view of such conventional circumstances, and the spherical coating body is evenly contacted with the entire circumference of the inward edge along the center of the opening of the liquid coating port at the tip of the chip. Therefore, it is an object of the present invention to provide an applicator capable of ensuring the stability and certainty of the valve closed state and preventing the excessive discharge of the correction liquid during application.

[0006]

The technical means taken by the present invention to achieve the above object is to provide a spherical coating body, in which a tip is attached to a liquid tank via a tip holder, and the tip is attached to the tip. , Spring is applied to the tip of the tip in the direction of the liquid application port, and a part of it is placed so as to project from the liquid application port. In an applicator provided with a valve mechanism for opening a coating port, a cylindrical pusher that can be moved back and forth in the tip and one end of the pusher is locked to the liquid coating port. A spring that springs in the direction, a seat portion that rotatably receives the spherical applicator is provided at the tip of the pusher, and an engaging portion that engages one end of the spring is provided at the tip end side of the spring. The other end of the tip holder And gist that it is engaged in part.

The gist is that the amount of backward movement of the spherical applicator against the spring is regulated by the abutment of the pusher against the step of the tip holder.

Further, a contact portion is provided on the inner surface of the tip, and the amount of backward movement of the spherical coating body against the spring is regulated by the contact of the pusher with the contact portion. To do.

[0009]

According to the technical means described in claim 1 of the present invention, the pusher is elastically urged in the direction of the liquid application port at the tip of the chip by the spring, and is spherical by the seat portion at the tip. The applicator is brought into contact with the inward edge of the liquid application port. That is, the spherical applicator can be elastically urged toward the liquid application port and kept in contact with the inward rim thereof while being rotatably received by the seat portion at the tip of the pusher.
Thereby, the spherical applicator is uniformly and surely contacted with the entire circumference of the inwardly facing edge to ensure the valve closed state.

According to the technical means described in claim 2, when the spherical applicator projecting from the liquid application port at the tip of the chip is pressed against the paper surface at the time of application and the spherical applicator moves backward against the spring, the pressing is performed. When the child contacts the stepped portion of the tip holder, the retreat is restricted. As a result, the discharge amount is controlled so as to prevent the excessive correction liquid from being discharged.

According to the technical means described in claim 3, as described in claim 2, when the spherical applicator retracts against the spring, the pusher comes into contact with the contact part on the inner surface of the chip. At that point the retreat is regulated. As a result, the discharge amount is controlled so as to prevent the excessive correction liquid from being discharged.

[0012]

EXAMPLE An example of the embodiment of the present invention will be described below with reference to the drawings. The liquid tank 1 filled with the correction liquid M has an appropriate thickness and length by injection molding or blow molding using a synthetic resin or the like. It is integrally molded into a pen type or a bottle type having an end, and a tip 3 in which a spherical applicator 4, a pusher 5, and a spring 6 are incorporated is attached to the tip through a tip holder 2. At the time of coating, the spring 6 elastically repels toward the liquid coating port 7 at the tip of the tip 3 and a part of the spherical coating body is projected to the outside in contact with the inward edge 7a of the liquid coating port 7. 4 is pressed against the paper surface N to move the spherical applicator 4 inward of the chip 3 against the spring 6 so as to be separated from the liquid applicator 7, thereby opening the liquid applicator 7 to open the liquid applicator. It is configured so that the correction liquid M is discharged from the coating port 7.

As with the liquid tank 1, the tip holder 2 is integrally formed of a synthetic resin or the like into a stepped cylindrical shape which gradually tapers from the rear end toward the tip, and the tip 3 is press-fitted into the tip port 2a. You will get it.

The tip 3 is formed in a straight pipe shape having no unevenness on the inner surface, and the tapered opening edge is narrowed inward by caulking or the like to form a liquid application port 7 at the tip. Then, by mounting the rear end connecting portion 3a which is formed to be slightly thinner to the front end opening 2a of the front end holder 2 by press fitting until the edge of the connecting portion hits the step portion 8 at the bottom of the front end opening 2a,
The other end of the spring 6 is locked to the step portion 8 on the bottom of the tip end port 2a to elastically push the pusher 5 toward the liquid application port 7,
A gap L corresponding to the amount of backward movement of the spherical applicator 4 is ensured between the rear end of the pusher 5 and the stepped portion 8, and the pusher 5 moves backward within the range of the gap L.

The pusher 5 is elastically urged in the direction of the liquid application port 7 by the spring 6, and directly receives the spherical coating body 4 at its tip to receive the spherical coating body 4 from the inward edge 7a of the liquid coating port 7. It has a role of ensuring evenly and surely contact with the circumference to ensure the closed state, and a function of smoothly receiving the spherical applicator 4, and makes contact with the inward edge 7a of the liquid application port 7. With the tip in contact with the spherical coating body 4 in the open state, the tip 3 can freely slide back and forth in the tip 3 with a length that secures the above-mentioned gap L between the rear end and the stepped portion 8 of the tip holder 2. Is formed into a cylindrical shape that can be disposed in the inner surface of the tip, and a seat portion 9 for rotatably receiving and contacting the spherical applicator 4 is provided on the inner surface of the tip thereof.

The seat portion 9 is tapered from the outer peripheral edge of the tip end surface of the pusher 5 toward the inner side (in the axial direction of the pusher 5) so that the tip of the pusher 5 has a substantially C-shaped cross section. Form. An engaging portion 10 is provided on the inner surface of the pusher 5 directed inward (cylindrical direction) from the seat portion 9 so as to project from the seat portion 9, and one end of the spring 6 is engaged. It is like that. Reference numeral 11 in the drawing denotes a vertical groove provided radially from the seat portion 9 toward the locking portion 10.

Then, after the spherical coating 4 is placed in the chip 3 through the rear end opening of the chip 3, the spring 6 is assembled with one end of the spring 6 being locked to the locking portion 10. Incorporating the pusher 5 that has been incorporated into the chip 3,
When the tip 3 is attached by press fitting until the rear end connecting portion 3a of the tip 3 comes into contact with the step portion 8 at the bottom of the tip opening 2a of the tip holder 2,
The other end of the spring 6 is locked to the stepped portion 8 at the bottom of the 2a to elastically push the pusher 5 toward the liquid application port 7 at the tip of the chip 3.
The pusher 5 elastically ejected toward the liquid application port 7 contacts the inward edge 7a of the liquid application port 7 while the spherical applicator 4 is rotatably received by the seat portion 9 at the tip. As a result, the stability of the contact state with respect to the entire circumference of the inwardly facing edge 7a of the spherical applicator 4 is achieved, and thus the reliability of the closed state of the liquid application port 7 is ensured. In this manner, the rear end of the pusher 5 and the tip holder 2 are secured while ensuring the closed state of the liquid application port 7.
A gap L that regulates the amount of backward movement of the spherical applicator 4 when the liquid application port 7 is opened is provided between the stepped portion 8 and the stepped portion 8. At least open the liquid application port 7. That is, excessive ejection of the correction liquid M is prevented, and the ejection amount is controlled (see the states of FIGS. 2 to 3).

Therefore, according to the applicator of the present invention, the seat portion 9 of the pusher 5 which always rotatably receives and holds the spherical applicator 4 is resiliently urged toward the liquid application port 7 at the tip of the tip 3 to face inward. Since it is brought into contact with the rim 7a of the liquid application port 7, the stability and certainty of the closed state of the liquid application port 7 by the spherical application body 4 can be achieved, and moreover, the excessive discharge of the correction liquid M can be prevented, The discharge amount is controlled.

FIG. 4 shows another embodiment in which the spring 6 is concentrically fitted on the outside of the pusher 5 and incorporated in the chip 3. In such an embodiment, a locking portion 12 for locking one end of the spring 6 is provided on the outer surface of the pusher 5, and when the connecting portion 3a at the rear end of the tip 3 is attached to the tip end opening 2a of the tip holder 2 by press fitting. The other end of the spring 6 is locked to the step portion 8 at the bottom of the tip end port 2a of the tip holder 2 to elastically push the pusher 5 toward the liquid application port 7 at the tip of the tip 3 and the rear end of the pusher 5 and The gap L that regulates the backward movement amount of the pusher 5 is configured to be accurately notified between the stepped portion 8 and the stepped portion 8. The locking portion 12 is formed by reducing the outer diameter of the pusher 5 by about one size except for the tip end side as shown in the figure, so that one end of the spring 6 can be locked.

In FIG. 5, the pusher 5-1 is formed in a short cylindrical shape and is arranged so as to be slidable back and forth inside the tip side of the tip 3, and the rear end is provided on the inner surface of the tip 3 at the time of coating. By contacting the contact portion 13, a gap L is secured between the contact portion 13 and the rear end of the pusher 5-1 so that the backward movement amount of the spherical applicator 4 against the spring 6 is restricted. Another embodiment will be described.

However, in such an embodiment, the tip 3 having the hole shape of the tip 3 has an inner diameter capable of rotatably holding the spherical applicator 4 having the liquid application port 7 and the pusher 5-1 is spherically applied. The large-diameter portion is formed with a large-diameter shape having a length capable of moving back and forth within the range of the gap L that regulates the backward movement amount of the body 4.
A stepped member formed between the small diameter portion 15 and the large diameter portion 14 has a stepped shape formed from 14 to the rear end of the tip 3 so as to have a small diameter so that the spring 6 can be arranged. A contact portion 13 for locking the rear end of 1 is provided. On the other hand, pusher 5-1
Secures a gap L between the rear end and the abutting portion 13 in a state where the spherical applicator 4 is brought into contact with the inward edge 7a of the liquid applicator 7 and restricts the backward movement amount of the spherical applicator 4. A seat portion 16 is provided which is formed in a short cylindrical shape and can be slidably arranged in the tip 3 in a longitudinal direction, and the spherical coating 4 is rotatably received and brought into contact with the inner surface thereof. Then, with one end of the spring 6 being locked to the locking part 17 that is connected to the seat part 16, the connecting part 3a at the rear end of the tip 3 is press-fitted into the tip end opening 2a of the tip holder 2 to thereby spring the spring. The other end of 6 is locked to the step portion 8 of the tip holder 2 so that the pusher 5-1 is elastically ejected toward the liquid application port 7.

[0022]

Since the valve mechanism of the applicator of the present invention is constructed as described above, the following operational effects are obtained. ． The pusher is elastically urged toward the liquid application port at the tip of the tip by the tip seat portion of the pusher to bring the spherical applicator into contact with the inward edge of the liquid application port. That is, since the spherical applicator is always rotatably received by the seat portion at the tip of the pusher, the spherical applicator can be elastically urged toward the liquid application port and brought into contact with the inward rim of the liquid applicator. The valve closing state can be ensured by uniformly and surely contacting the entire circumference of the facing rim. ． At the time of coating, the spherical applicator protruding from the liquid application port at the tip of the tip is pressed against the paper surface and the spherical applicator retracts against the spring, and the pusher contacts the stepped part of the tip holder or the contact part on the inner surface of the chip. At the time of contact, the retreat is regulated to prevent excessive discharge of the correction liquid, and the discharge amount is controlled.

Therefore, according to the applicator of the present invention, like the conventional applicator, when the valve is closed, the spherical applicator causes a center misalignment with respect to the opening center of the liquid applicator opening at the tip of the tip, and the spherical applicator faces inward. Without saying that the contact becomes unstable with respect to the rim, the spherical application body is evenly contacted with the entire inward rim of the liquid application port at the tip of the tip to ensure the stability and certainty of the valve closed state. Can be planned. Further, since the amount of backward movement of the spherical applicator is regulated by the pusher, it is possible to prevent the correction liquid from being excessively ejected at the time of application.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an example of an embodiment of the applicator of the present invention, a part of which is omitted.

FIG. 2 is an enlarged cross-sectional view of an essential part of a state in which the spherical applicator is retracted against the spring until the rear end of the pusher comes into contact with the stepped portion of the tip holder.

[Fig. 3] The same enlarged cross section showing the usage state

FIG. 4 is an enlarged cross-sectional view of a main part showing another embodiment of the applicator of the present invention.

FIG. 5 is an enlarged cross-sectional view of a main part showing another embodiment of the applicator of the present invention.

FIG. 6 is a vertical sectional view showing a conventional applicator.

FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG.

[Explanation of symbols]

1 ... Liquid tank 2 ... Tip holder 3 ... Tip 4 ... Spherical applicator 5, 5-1 ... Pusher 6 ... Spring 7 ... Liquid application port 7a ... Inward edge 8 ... Step part 9, 16 ... Seat part 10 , 17 ... Locking part 13 ... Contact part L ... Gap

Claims (3)

[Claims] 1. A spherical applicator in which a tip is attached to a liquid tank via a tip holder and the tip is held by the tip,
A spring springs the tip toward the liquid application port and a part of it projects and protrudes from the liquid application port. At the time of application, the spherical applicator is moved backwards from the liquid application port against the spring to apply the same liquid. In an applicator provided with a valve mechanism for opening a mouth, in the tip, a cylindrical pusher capable of moving back and forth and one end of the pusher is locked so that the pusher is directed toward the liquid application port. And a spring that springs out, a seat that rotatably receives the spherical applicator is provided at the tip of the pusher, and a locking portion that locks one end of the spring is provided at the tip side of the seat. An applicator characterized in that the other end is locked to the step of the tip holder. 2. The applicator according to claim 1, wherein the amount of backward movement of the spherical applicator against the spring is regulated by the abutment of the pusher against the step of the tip holder. Applicator. 3. The applicator according to claim 1, wherein an abutting portion is provided on the inner surface of the tip, and the backward movement amount of the spherical applicator against the spring is regulated by the abutment of the pusher against the abutting portion. An applicator characterized by being configured to do.