JP2001080267A - Coating tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the rear end part of a tip from being crushed in a free-ink type writing utensil, which supplies the ink in an ink tank little by little to a pen point tip through a ball tip valve. SOLUTION: This coating tool 1 is equipped with a stopper 4c, winch adjusts the retreat of a tip 5 by the predetermined amount. The tip of a valve chamber 11 is constituted to be located to a more rear end side than the rear end surface of the tip 5 under the state that the retreat of the tip is readjusted by the stopper 4c. In this case, the valve chamber 11 consists of a tapered cylindrical member, the diameter at the tip side of which reduces.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an applicator which can be used as a writing instrument or a cosmetic tool, and more particularly to an applicator having a coating liquid such as ink or cosmetic liquid contained in a cylindrical tank. It is.

[0002]

2. Description of the Related Art The present applicant has disclosed a free ink type applicator (writing implement) having an improved structure capable of supplying ink smoothly and capable of continuous writing.
No. 495. This applicator has a cylindrical ink tank containing ink, and a fiber bundle chip that exudes ink by capillary action or the like, and the ink in the ink tank is guided to the chip and written. A valve is provided at the tip of the ink tank, and the valve has a ball disposed in a valve chamber having an opening at the tip, and the ball is pressed toward the opening by a spring, and is positioned at the tip of the valve. The tip is provided, and a rear end side of the tip is in contact with a ball in the valve.

[0003] The conventional applicator described above, when not in use,
No ink is supplied since the ball in the valve chamber is pressed toward the opening of the valve chamber by the spring. Further, when the tip of the chip is pressed against paper or the like during writing, the sphere is unintentionally pushed up by the writing pressure at the time of writing, and the ink in the ink tank can be gradually oozed to the chip. Therefore, there is no ink fogging, there is no need to stop writing to supply ink to the chip, and no excessive amount of ink is supplied to the chip, and a beautiful handwriting is obtained. There is an advantage.

Further, as in the embodiments shown in FIGS. 2 to 5 of the above-mentioned conventional publication, by making the diameter of the rear end of the chip larger than the opening diameter of the valve, the ink ejected from the opening can be surely formed. The ink is absorbed by the rear end, so that further ink fogging can be prevented.

[0005]

Problems to be Solved by the Invention FIGS.
In the embodiment shown in FIG. 5, the valve chamber (valve housing) is formed in a substantially thick cylindrical shape, and a valve seat and a spring receiver are formed on the inner peripheral surface thereof. However, such a valve chamber tends to have low productivity and high cost.

On the other hand, if a thin cylindrical valve chamber is held at the front end of the tank as in the embodiment shown in FIG. It is considered that a throttle-shaped valve seat structure can be easily obtained, and cost reduction and improvement in mass productivity can be achieved. However, if the diameter of the rear end of the tip is made larger than the diameter of the opening to prevent ink fogging while adopting the valve chamber having such a structure, when a large writing pressure acts on the tip, the tip is tapered. The rear end face of the chip is strongly pressed against the front end of the valve chamber or the small-diameter spherical valve body. Then, a dent is formed on the rear end surface of the chip, and rattling occurs in the chip, or when the dent is large, the spherical valve element fits into the large dent, and the valve element may be pushed up. May not be possible.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an applicator that exudes a small amount of a coating solution in a tank to a chip while preventing the rear end of the chip from being crushed while improving workability and productivity.

[0008]

According to a first aspect of the present invention, there is provided an applicator including a tank containing a coating liquid, and a valve provided at a tip of the tank. A valve body is disposed in a valve chamber having an opening, and the valve body is pressed against the periphery of the opening by an urging means so as to close the opening, and a tip is provided on the distal end side of the valve. The rear end of the tip is in contact with the front end of the valve body protruding from the opening toward the front end. In addition,
The applicator includes a writing implement and a makeup implement. The coating liquid may be water-based or oil-based, and an appropriate liquid depending on the application such as ink and mascara can be used. The tank is preferably cylindrical, and when storing ink in a cylindrical tank (ink storage cylinder) having an open rear end,
A backflow inhibitor can be provided in the tank at the rear end of the ink. Further, the present invention can be applied to an air displacement type applicator using a bottomed cylindrical tank with a closed rear end. The valve body is preferably spherical, and the distal end side of the valve chamber is preferably in the shape of a funnel with a constriction, and the diameter of the distal opening is preferably slightly smaller than the diameter of the spherical valve body. In addition, it is preferable to provide a step in the valve chamber that abuts on the rear surface of the valve body so as to prevent the valve body from completely immersing in the opening. The chip is made of a material from which a coating solution such as a fiber bundle can be exuded by capillary action or the like. Further, the area of the tip rear end surface can be four times or more the opening area of the front end opening of the valve.

In the applicator of the present invention, when not in use, the valve body in the valve chamber is pressed toward the opening of the valve chamber by the urging means. Therefore, when not in use, the ink tank is sealed by the valve and there is no ink supply.
When the tip of the chip is pressed against paper or the like during writing, the rear end of the chip slightly pushes up the valve body to open the opening of the valve chamber. If a sphere is used as a member for closing the opening of the valve chamber,
Regardless of the posture of the member to be closed, the opening of the valve chamber can be completely closed, and by slightly pushing up the ball, a gap for supplying ink can be secured. In addition, since the tank has a double wall structure in the outer body, it is possible to replace only the tank, and to improve the flexibility of the material and strength of the tank.

Further, the applicator of the present invention has a stopper for restricting the retreat of the chip by a predetermined amount or more, and the valve chamber of the valve chamber is located on the rear end side with respect to the rear end face of the chip in which the retraction is restricted by the stopper. The distal end is configured to be positioned, and the valve chamber is formed of a tapered cylindrical member whose distal end is reduced in diameter. According to the present invention, since the valve chamber is formed of the cylindrical member, the manufacturing cost can be reduced and the mass productivity can be improved. By providing the stopper while the valve chamber is formed of a cylindrical member, the rear end face of the chip is prevented from being pressed against the front end of the valve chamber or valve body, and the valve body on the rear end face of the chip comes into contact with the valve body. It is possible to prevent the portion from being crushed and improve the durability. The tapered cylindrical member may be formed by caulking the outer periphery of the tip of the metal cylinder, or may be formed of a resin molded product.

Further, in the applicator of the present invention, a stopper is provided around the front end of the valve chamber, the stopper being in contact with the rear end face of the chip when the chip retreats, and the stopper comes into contact with the rear end face of the chip. The contact portion may be located on the rear end side of the distal end of the valve body protruding from the opening to the distal end side and on the distal end side of the distal end of the valve chamber. According to the present invention also, when a large pen pressure is applied to the tip, such a large pen pressure can be received by the stopper,
Since a large pressure does not act on a portion of the chip at the rear end surface where the valve body contacts, it is possible to prevent the portion from being crushed.

In the present invention, a seat for regulating the retreat amount of the valve body is provided inside the valve chamber, and the valve body is located between the seat and the opening at the front end of the valve chamber. The valve body is accommodated in the space, and when the valve body comes into contact with the receiving seat, the front end of the valve body is located on the rear end side with respect to the valve chamber front end. It can be configured. According to this configuration, since the valve body can be retracted until it is completely housed in the valve chamber, it is possible to reliably prevent the front end of the valve body from being strongly pressed against the rear end surface of the chip, and The collapse of the central portion of the rear end face of the abutting chip can be reliably eliminated.

In the present invention, a seat for regulating the retreat amount of the valve body is provided inside the valve chamber, and the valve body is provided between the seat and the opening at the front end of the valve chamber. A space in which the valve body can move back and forth is formed, and a valve body is accommodated in the space. When the valve body comes into contact with the seat, the tip of the valve body projects from the opening to the tip side and the valve The tip of the body may be configured so as to be located on the rear end side with respect to the contact portion of the stopper with the tip rear end face. According to such a configuration, while restricting the amount of ink supply from the valve by restricting the retreat amount of the valve body to a very small amount,
By disposing the distal end of the tip that is retracted relative to the distal end of the tip, it is possible to prevent the tip end of the tip from being strongly pressed against the valve body and prevent the center of the tip rear end from being crushed.

[0014]

Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 illustrates a fiber bundle tip pen 1 using an aqueous ink as a first embodiment of the applicator of the present invention. The applicator 1 includes an outer cylinder 2 (outer body) serving as a pen body, an ink tank 3, a tip plug 4, a fiber bundle chip 5, a valve 6, a tail plug 7, and a closing member 8.

The outer cylinder 2 is a cylindrical member made of a resin such as polypropylene or a metal such as aluminum or stainless steel, and is preferably made of a transparent or translucent hard synthetic resin. The distal end side of the outer cylinder 2 is gradually thinned, and the portion of the distal end of the outer cylinder 2 having the smallest diameter is a tip holding cylinder portion 2b.
The tip 5 is fitted to the tip holding cylinder portion 2b at the tip of the outer cylinder 2 so as to be able to slide back and forth without play. Further, in the outer cylinder 2, an outside air introduction hole can be formed at an appropriate portion. In the illustrated embodiment, the tip holding cylinder 2
A longitudinal groove 25 extending forward and backward is formed on the inner surface of b, and a rib 26 for securing a gap between the urethane foam 16 described later and the inner peripheral surface of the outer cylinder 2 is provided to open at the tip. Although the outside air introduction hole is formed, an outside air introduction hole may be formed in the peripheral wall of the outer cylinder 2. A cap (not shown) can be detachably attached to the tip of the outer cylinder 2.

The ink tank 3 is a cylinder made of a resin such as polypropylene or a metal such as aluminum or stainless steel, and is disposed inside the outer cylinder 2.
The ink tank 3 is hollow so that the ink can be stored therein. The outer diameter of the ink tank 3 is smaller than the inner diameter of the outer cylinder 2, so that a space is formed between the ink tank 3 and the outer cylinder 2.

The tip plug 4 is made of a hard synthetic resin such as polypropylene or a metal, and is disposed at an intermediate portion of the outer cylinder 2 in the axial direction.
An ink circulation hole 9 penetrating in the axial direction is formed at the center of the shaft. The rear end side 4a of the tip plug 4 is cylindrical,
A cylindrical seal member 20 is fitted on the outer periphery of “a”.
The seal member 20 is interposed between the outer surface of the rear portion 4a of the tip plug 4 and the inner surface of the ink tank 3, and has a function of preventing ink leakage.

Further, in this embodiment, the sealing member 20
Is used as a constituent material of the ink. That is, in the case of a water-based ink, water vapor having a transmission coefficient of 2.5 to 10.0 cm ³ · cm / cm ² · s · Pa, more preferably 3.0 cm ³ · cm / cm ² · s · Pa or more A material having a coefficient, for example, a porous material such as silicon rubber can be used as a constituent material of the seal member 20. Silicon rubber or its copolymer has a large intermolecular chain distance, a sparse structure, and a high degree of molecular flexibility, and thus has relatively high gas permeability. Therefore, even in the case of oil-based ink, the seal member 20 can be made of silicone rubber. The water vapor (vaporized gas of the ink solvent) that has passed through the seal member 20 is dispersed in the space around the chip 5 and has an effect of preventing the evaporation of the ink solvent from the rear end face of the chip 5.

The rear end 4a of the tip plug 4 is
0 is fitted inside the front end of the tank 3. A large-diameter portion 4 protruding outward in the axial direction is provided at an intermediate portion in the axial direction of the stopper 4.
The large diameter portion 4b is fitted in the outer cylinder 2 and the stepped portion 2 provided on the inner peripheral surface of the outer cylinder 2 is provided.
a from behind. In addition, as shown in FIG. 2, a communication hole 10 for guiding gas that has passed through the seal member 20 to the space around the chip 5 is formed in the large diameter portion 4b. Although the shape and number of the communication holes 10 are not particularly limited, a plurality of fan-shaped holes are formed in the circumferential direction in the illustrated embodiment. The tip side 4c of the tip plug 4 is a large diameter portion 4
b protrudes forward from the front surface.

The valve 6 is a cylindrical metal or resin housing 11 (valve chamber) in which the inner surface of the opening at the end serves as a valve seat.
And a spherical valve body 12 held in the housing 11.
And a spring 13 for urging the valve body 12 toward a valve seat.
(Biasing means). The housing 11 is fitted in the ink flow hole 9 and is thereby held by the plug 4. Thus, the stopper 4 serves as a holding member for the valve 6.

The housing 11 has the same structure as that of the tip of the ballpoint pen, that is, is constituted by a cylindrical body whose tip is reduced in diameter.
Is provided, and the tip of this space has a tapered shape. An opening 14 is provided at the tip of the housing 11. This opening 1
The diameter of 4 is preferably about 50% to 95% of the diameter of the valve body 12. Also, the outer diameter of the tip end of the cylindrical body forming the housing 11 is smaller than the outer diameter of the rear end of the tip 5,
The valve element 12 is brought into contact with the center of the rear end of the chip 5.

The internal structure of the valve housing 11 will be described in more detail. As shown in FIGS.
A convex portion 15 is formed at a predetermined position in the front-rear direction on the inner surface of the projection 1 so as to protrude radially inward. A plurality of the protrusions 15 are provided in the circumferential direction, and a slit penetrating back and forth is formed between the protrusions 15. The front side surface (lower side surface in FIGS. 3 and 5) of the convex portion 15 is tapered so as to gradually incline rearward toward the center of the shaft. It constitutes a seat. A space is formed at the center of the plurality of protrusions 15, and the tip of the spring 13 is located in this space. Note that the present invention does not necessarily require the convex portion 15 (seat), but also includes a case where the seat is not formed. Also, the structure of the seat may be a flange without slits,
Further, a plurality of recesses may be formed in the front surface of the flange in the circumferential direction.

Between the seat and the opening 14, there is provided a valve body 12.
Is formed so that the ink can be supplied to the chip 5 by opening the opening 14 when the valve body 12 is pushed backward by the chip 5. In the present embodiment, as shown in FIG.
However, the valve body 12 is configured to be larger than the projection amount A of the valve body 12 from the opening 14 when not in use, and the valve body 12 is completely housed in the opening 14 as shown by a two-dot chain line in FIG. It is possible.

The inner diameter of the internal space of the housing 11 is
The diameter of the ink is slightly larger than the diameter of No. 2 so that a small amount of ink can flow through a minute flow space between the valve body 12 and the inner surface of the housing 11.

The valve body 12 may be made of a resin, but is preferably made of a metal such as that used for a normal ballpoint pen. The diameter of the valve element 12 can be 0.3 mm to 20 mm, and more preferably 0.6 mm to 2 mm. In addition, the valve body 12 is not limited to a spherical valve body, and may have an appropriate structure and shape, for example, a conical valve body.

The spring 13 is disposed behind the valve body 12. As the spring 13, a thin wire such as nylon tex or wire harness can be used. In the illustrated example, a compression coil spring is used. The spring 13 has a rear end 4 a at the rear end
It engages with the internal step, and the tip is the valve 1 inside the housing 11.
It is in contact with 2. Therefore, the valve body 12 is
The valve body 12 is pressed against the periphery of the opening 1, and a part of the valve element 12 on the tip side protrudes from the opening 14.

The chip 5 is made of a known resin or fiber as a material, and oozes ink by capillary action or the like. The chips 5 may be all formed of a single material, or may be formed by joining a resin chip and a relay member of a fiber bundle. Also, a so-called brush pen type tip may be used.

The tip of the tip 5 projects forward from the tip of the outer cylinder 2 so that characters and the like can be written, and the rear end of the tip 5 contacts the valve element 12 of the valve 6 described above. In contact. The tip 5 has a small-diameter shaft portion 5a on the tip side.
And a large-diameter shaft portion 5b on the rear end side. The outer diameter of the large-diameter shaft portion 5b on the rear end side of the tip 5 is smaller than the inner diameter of the outer cylinder 2, so that a space is formed between the rear end side of the tip 5 and the outer cylinder 2. It is. The space around the rear part of the tip 5 communicates with the distal end face of the seal member 20 via the communication hole 10 of the tip plug 4 described above.

The outer surface of the rear portion 5b of the chip 5 is exposed in the inner space of the outer cylinder 2, but as described above,
Since the solvent of the ink filled therein evaporates and passes through the seal member 20 and fills the space inside the outer cylinder 2, the evaporation of the ink from the chip 5 can also be suppressed.

A cylindrical urethane foam 16 is built in the outer cylinder 2 behind the tip holding cylinder 2b. The urethane foam 16 has a function of absorbing excess ink supplied to the chip 5 and replenishing the chip 5 with ink when the ink of the chip 5 runs short. Further, the urethane foam 16 is engaged with a step between the small diameter portion 5a and the large diameter portion 5b of the chip 5, and has a function of lightly urging the chip 5 rearward.
The urging force of the urethane foam 16 is weaker than the urging force of the spring 13, and has a function of preventing the valve 6 from opening when not in use, and also suppressing rattling of the chip 5.

A coating liquid such as aqueous ink is contained in the ink tank 3. Further, a closing member 8 is built in the ink tank 3. The closing member 8 in the illustrated example is composed of a float 8a made of rubber or resin, and a backflow preventing agent 8b such as boribene, which covers the outer surface of the float 8a.
The closing member 8 is located at a boundary portion on the rear end side of the ink, and the ink is sealed by the closing member 8. Closure material 8
Slides toward the tip stopper 4 as the ink is consumed.

A tail plug 7 is fitted to the rear end of the outer cylinder 2. The tail plug 7 has a lid 7a and a cylinder 7b protruding forward from the lid 7a. The cylindrical portion 7b has an outer diameter that just fits with the outer cylinder 2 and is airtightly fitted with the outer cylinder 2.

Next, the operation of the applicator 1 of this embodiment will be described. When the applicator 1 of the present embodiment is not used,
The valve body 12 is pressed against the opening 14 of the housing 11 by the spring 13 and the valve 6 is closed. Therefore, no ink is supplied from the ink tank 3 to the chip 5, and the ink does not fog. Further, since the diameter of the rear end face of the chip 5 is set to be twice or more the diameter of the opening 14, it is highly reliable that the ink supplied from the opening 14 is impregnated into the chip 5. Further prevention of ink fogging is achieved.

At the time of writing, the tip 5 is pressed by the pen pressure, and the valve body 12 moves rearward by the force to open the opening of the housing 11. In the present embodiment, the valve element 12
Is about 1 mm or less, and the force required for the movement is about 100 g or less, so that the user hardly feels that the chip has moved. Further valve 6
Is opened by writing pressure at the time of writing, so that an operation of interrupting writing and strongly pressing a chip as in the related art is unnecessary.

Further, in the applicator 1 of the present embodiment, FIG.
As shown in the figure, the front end of the front side 4c of the plug 4 is
It is located on the rear end side of the distal end of the valve body 12 protruding distally from the opening 14 and on the distal end side of the distal end of the valve housing 11 (tubular body). With this configuration, when the tip 5 moves to the rear end side by writing pressure during writing, the tip 5
The outer peripheral portion of the rear end surface of the rear portion 5b abuts on the front end surface of the tip plug 4, and restricts the tip 5 from moving further. Then, a pressure higher than the urging force of the spring 13 does not act on the center of the rear end face of the tip 5, and the writing pressure can be received by the tip plug 4, so that the rear end of the tip 5 is prevented from being crushed. it can. Thus, the front side 4c of the tip plug 4
Thus, a stopper that restricts the retraction of the chip 5 beyond a predetermined distance is configured.

By the stopper 4c, the tip 5
Is prevented from retracting until it contacts the tip of the valve housing 11, and even when a large writing pressure acts on the tip,
Such a large pen pressure can be received by the stopper 4c, and it is possible to prevent the center portion of the rear end face of the chip from being crushed. Therefore, even when the writing implement 1 of the present embodiment is used somewhat rough, the ball chip valve 6 described above is used.
Can be guaranteed, and the durability can be improved.

The present invention is not limited to the above embodiment, and can be appropriately designed and changed. For example, the stopper can be formed separately from the stopper. In addition, the stopper can be configured to engage with an intermediate portion of the tip in the axial direction.

In the above embodiment, the convex portion 15 serving as a seat is formed so that the valve element 12 can be completely accommodated in the valve housing 11. However, as shown in FIG. It may be configured such that the tip of the valve body 12 in contact with the opening slightly protrudes from the opening 14. In this case, from the state where the valve body 12 closes the front end opening 14, the rear end side of the seat (the convex portion 1).
The amount of movement of the valve body 12 until it comes into contact with 5) is 0.1
mm to 1 mm, more preferably 0.2 mm
It is preferable to design in the range of mm to 0.4 mm. As shown by a two-dot chain line in FIG. 6, when the valve body 12 comes into contact with the receiving seat 15, the distal end of the valve body 12 protruding from the opening 14 to the distal end side is in contact with the tip rear end surface of the stopper 4 c. It is preferable that the contact portion (ie, the front end surface of the stopper 4c) be located on the rear end side.

[0040]

In the applicator of the present invention, when not in use, the valve element in the valve chamber is pressed toward the opening of the valve chamber by the urging means, so that no ink is supplied, and the tip of the tip is written during writing. When pressed against paper or the like, the valve body is pushed up by the writing pressure at the time of writing, so that a small amount of ink can be supplied to the chip. Therefore, the applicator of the present invention does not have ink fogging and does not require an operation of stopping writing to supply ink to the chip. Furthermore, in the applicator of the present invention, the tip of the valve element or the valve chamber is not strongly pressed against the rear end face of the chip, so that the rear end face of the chip can be prevented from being crushed.

[Brief description of the drawings]

FIG. 1 is an overall longitudinal sectional view of an applicator according to a first embodiment of the present invention.

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

FIG. 3 is an enlarged vertical cross-sectional view of a distal end portion of a valve housing (valve chamber) of the applicator.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is a simplified vertical sectional view showing the entire configuration of a valve of the applicator.

FIG. 6 is an overall longitudinal sectional view of an applicator according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Free ink type writing implement (coating tool) 2 Outer cylinder (outer body) 3 Ink tank (tank) 4c Stopper 5 Tip 6 Valve 11 Valve housing (Valve chamber) 13 Spring (biasing means) 14 Opening 15 Receiving seat (convex part) )

Claims (4)

[Claims] A tank provided with a coating liquid therein; and a valve provided at a tip of the tank, wherein the valve has a valve body disposed in a valve chamber having an opening at the tip. A valve body in which a valve body is pressed against the periphery of the opening so as to close the opening by a biasing means, a tip is provided on a tip side of the valve, and a rear end face of the tip projects forward from the opening toward the tip side. An applicator that is in contact with the tip of the valve chamber, the stopper having a stopper that regulates the retreat of the chip by a predetermined amount or more, the valve chamber of the valve chamber being closer to the rear end than the rear end face of the chip in which retraction is restricted by the stopper. An applicator, wherein the distal end is configured to be located, and the valve chamber is formed of a tapered cylindrical member whose distal end is reduced in diameter. 2. A tank having a coating liquid therein, and a valve provided at a tip of the tank, wherein the valve has a valve body disposed in a valve chamber having an opening at the tip. A valve body in which a valve body is pressed against the periphery of the opening so as to close the opening by a biasing means, a tip is provided on a tip side of the valve, and a rear end face of the tip projects forward from the opening toward the tip side. In the applicator which is in contact with the tip of the valve chamber, a stopper is provided around the tip of the valve chamber, which comes into contact with the rear end face of the chip when the chip retreats, and the stopper comes into contact with the rear end face of the chip. The applicator is characterized in that the contact portion is located on the rear end side of the distal end of the valve body projecting from the opening to the distal end side and on the distal end side of the distal end of the valve chamber. 3. A seat for regulating the amount of retreat of the valve body is provided inside the valve chamber, and the valve body moves back and forth between the seat and the opening at the tip of the valve chamber. A space to be obtained is formed, a valve body is accommodated in the space, and the valve body is configured such that when the valve body comes into contact with the receiving seat, the front end of the valve body is located on the rear end side with respect to the valve chamber front end. 3. The method according to claim 1, wherein
An applicator according to item 1. 4. A seat for regulating a retreat amount of the valve body is provided inside the valve chamber, and the valve body moves back and forth between the seat and an opening at the front end of the valve chamber. A space for obtaining the valve body is formed, and a valve body is housed in the space. When the valve body comes into contact with the seat, the distal end of the valve body protrudes from the opening toward the distal side, and the distal end of the valve body is a stopper. 3. The applicator according to claim 2, wherein the applicator is configured to be located on a rear end side of a contact portion with the chip rear end face.