JP5875320B2 - Applicator - Google Patents

Description

  The present invention relates to an applicator that can supply a coating liquid to an applicator stably with an applicator having a brush shape, a brush shape, or the like.

2. Description of the Related Art Conventionally, an applicator that supplies a coating liquid to a brush or brush-shaped application body has been developed.
As an applicator, for example, as described in Japanese Utility Model Publication No. 6-79698 (Patent Document 1), there is an applicator that discharges the coating liquid when the lead-out member moves to the front of the application destination at the same time as knocking and further knocks.
Further, as disclosed in Japanese Patent Application Laid-Open No. 2005-87433 (Patent Document 2), there is a quantitative extrusion mechanism that is provided with a first valve chamber and a second valve chamber and that can supply cosmetics that make up a certain amount.

Japanese Utility Model Publication No. 6-79698 Japanese Patent Laid-Open No. 2005-87433

However, in both of Patent Documents 1 and 2, in the structure that prevents air from the side of the application body, air may be mixed into the coating liquid and cause discharge failure.
In addition, the amount of liquid discharged is controlled by a spring when pressed from the rear end, but the spring on the application body side is compressed, and the spring is used to prevent the discharge of the coating liquid from being discharged earlier than intended. It was difficult to set the load.

In view of the above circumstances, an object of the present invention is to provide an applicator that can prevent air from being mixed from an applied body and can supply a stable amount even by pressing from the rear end.
It is another object of the present invention to provide an applicator that can quickly supply the liquid to the application body by forming an axial groove at the tip of the liquid guide tube.

The present invention provides an applicator provided with an application body at an axially leading portion of a shaft body, and provided with a pump mechanism for supplying an application liquid to the application body.
The shaft main body is provided with a container for accommodating a coating liquid and disposed so as to be able to advance and retract in a state of being biased rearward by the resilient force of the first spring,
The container includes a knock body for moving the container forward against the urging force of the first spring by a user's knocking operation, a pump mechanism for compressing and decompressing the coating liquid, and a coating liquid And a coating liquid guide tube for guiding the liquid into the coating body,
A notch is formed from the tip of the coating liquid guide tube toward the rear in the axial direction,
The pump mechanism includes a front valve body and a rear valve body that are located behind the coating liquid guide pipe and allow forward discharge, and a second valve body interposed between the front valve body and the rear valve body. A spring,
Due to the knocking operation of the user, the housing body moves more than a certain distance against the biasing force of the first spring in the shaft body, and the front valve body is attached to the front portion of the housing body. When pushed against the force, the volume between the front valve body and the rear valve body is reduced, and a compression stroke is performed in which the application liquid is pressurized and the front valve body opens,
In the compression stroke, the tip of the coating liquid guide tube is inserted into the tip of the coating body, and the coating liquid flows into the coating body through the coating liquid guide pipe,
When the container moves backward by the biasing force of the first spring in the shaft main body by the knock releasing operation after the compression stroke, the front valve body is second toward the front in the front part of the container. And the volume between the front valve body and the rear valve body is expanded, the coating liquid is depressurized, the rear valve body is opened, and the coating liquid in the container is transferred to the front valve body and the rear valve body. An applicator characterized in that an expansion stroke flowing into the space between the rear valve bodies is performed.

In the present invention, in the front part of the container, a coating liquid guide tube that can be inserted into and removed from the inside of the coating body, and a joint that holds the coating liquid guide pipe and contacts the front valve body at the rear end Is provided,
The shaft body is provided with an abutting portion with which the tip of the joint abuts on the inner side of the tip portion,
When the container moves forward against the urging force of the first spring in the shaft main body by a knocking operation by the user, the joint moves together with the container and the coating liquid guide tube moves inside the coating body. And the joint comes into contact with the abutting portion, and the front valve body is pushed into the front portion of the container through the joint, and the compression stroke is performed.
When the container is moved backward by the biasing force of the first spring in the shaft body by the knock release operation after the compression stroke, the coating liquid guide tube is removed from the coating body, and the joint is It is preferable that the expansion stroke is performed away from the contact portion.

  In the present invention, the application body is attached to the front portion of the shaft body so as to be surrounded by the front shaft, and the front end portion of the coating liquid guide tube is the same as or rearward of the front end surface of the front shaft during non-knock operation. It is preferable that it is located in.

In the present invention, the front valve body or the rear valve body is made of a rubber elastic material such as an elastically deformable elastomer or rubber having a general cap shape bulging toward the front, and a slit is formed at the tip. The slit opens when the front side of the front valve body or the rear valve body is at a lower pressure than the rear side, and conversely, when the front side is at a higher pressure than the rear side. It is preferable that
The front valve body and the rear valve body may be members having the same shape.

  In the present invention, it is preferable to form a notch from the tip of the coating liquid guide tube toward the rear in the axial direction.

  In the present invention, it is preferable that the container for the coating liquid is a container unit that is detachable from the shaft body.

  In the present invention, the container is preferably filled with a follower behind the coating solution.

According to the present invention, the pump mechanism is disposed between the front valve body and the rear valve body, which are located behind the coating liquid guide pipe and allow forward discharge, and between the front valve body and the rear valve body. A second spring mounted on the shaft body, and the container body moves a predetermined amount or more against the urging force of the first spring in the shaft body by a knocking operation by a user, When pushed into the front portion of the container against the urging force of the second spring, the volume between the front valve body and the rear valve body is reduced, and the coating liquid is pressurized and the front valve body is pressurized. Is opened, and a compression stroke in which the coating liquid flows into the coating body through the coating liquid guide tube is performed. Further, when the container moves rearward in the shaft main body by the urging force of the first spring by the knock release operation after the compression stroke, the front valve body moves forward in the front part of the container. 2, the volume between the front valve body and the rear valve body is enlarged, the coating liquid is depressurized, the rear valve body is opened, and the coating liquid in the container is returned to the front valve body. And the expansion process which flows into the space between the said rear valve bodies was performed.
Therefore, after the coating liquid is discharged from the container in the compression stroke, the space is decompressed when the coating liquid in the container flows into the space between the front valve body and the rear valve body in the expansion stroke. Since the body never opens, air does not enter the space. Therefore, air is not mixed into the coating liquid.

  In addition, since the coating liquid is allowed to flow from the coating liquid guide tube to the coated body only in the compression stroke, the discharge amount of the coating liquid can be accurately set by setting the compression stroke (such as the cross-sectional area and stroke of the tip of the container). And a stable amount can be supplied toward the coated body.

  It should be noted that the coating liquid can be reliably supplied to the tip of the coating body by positioning the coating liquid guide tube ahead in the coating body when knocking. This is preferable because the coating liquid can be supplied to the tip when the fine line is drawn at the tip of the coating body.

  By forming slits in the front valve body and the rear valve body, a shearing force is applied to the coating liquid by repeating the valve opening operation and the valve closing operation. The viscosity can be lowered by force and used by supplying it to the coated body. As a coating solution, the gel solution is a low-viscosity cosmetic when used in the container even if it has a high viscosity, and the coating solution can be applied without any unevenness on the skin or the like. In conventional pump mechanisms such as Patent Document 1 and Patent Document 2, since the mechanism is other than a slit, it does not apply a shearing force to the coating liquid, and the coating liquid is sent out with a high viscosity, but it is difficult to spread when applied. Since the valve body is made into a slit, a shearing force is applied to the coating solution, so that it can be made into a low-viscosity coating solution and a thin line can be drawn. Also,

  In the present invention, the application body is attached to the front end portion of the shaft body so as to be surrounded by the front shaft, and the front end portion of the coating liquid guide tube is positioned at the same or the rear side as the front end surface of the front shaft during the non-knock operation. If it is what is, it can supply a coating liquid reliably to the location which protrudes from the front axis | shaft of an application body, ie, the location to apply. A thin line can be drawn by discharging the coating liquid onto the tip of the tip, which is preferable for use as a cosmetic.

  Further, in the present invention, if a notch is formed from the tip of the coating liquid guide tube toward the rear in the axial direction, the discharge location from the coating liquid guide tube is wide and the coating body becomes long. The liquid can be quickly supplied to the body.

  In addition, if the container body of the coating liquid is a container unit that can be detached from the shaft body, the coating liquid can be restarted by replacing the container unit without replenishing the coating liquid after using the coating liquid. Can be dispensed with, making it easy to use.

  In addition, since the container is filled with a follower behind the coating liquid, a decrease due to evaporation of the coating liquid can be reliably prevented.

BRIEF DESCRIPTION OF THE DRAWINGS It is whole explanatory drawing of a cap fitting state about the applicator which concerns on embodiment of this invention, (a) External appearance side view, (b) is a longitudinal section. It is explanatory drawing at the time of non-operation (at the time of a non-knock) in the state which removed the cap of the applicator, (a) is the perspective view seen from the application body side, (b) is an external appearance side view, (c) is a longitudinal cross-section FIG. It is explanatory drawing at the time of the start (before a compression process) at the time of operation of the applicator (at the time of knocking), (a) is an external side view, (b) is a longitudinal cross-sectional view. It is explanatory drawing of a compression process at the time of operation of the applicator, (a) is an external side view, (b) is a longitudinal cross-sectional view. In the description of the container unit in which the coating liquid guide tube, the joint, the front valve body, the rear valve body, and the second spring body are mounted on the container of the applicator, and the coating liquid and the follower are housed inside, (a) Is a perspective view seen from the front, (b) is an external side view, and (c) is a longitudinal sectional view. It is explanatory drawing of the coating liquid guide tube of the applicator, (a) is a side view in which the notch groove is seen obliquely, (b) is a view from the front, and (c) is rotated 90 degrees from the notch groove. (D) is a side view in which the cutout groove can be seen by further rotating. It is explanatory drawing of the front valve body and rear valve body of the applicator, (a) is a view from the front side, (b) is a perspective view from the front side, (c) is a side view, (d) is a side view. It is a longitudinal cross-sectional view, (e) is a view from the rear, (f) is a longitudinal cross-sectional view in a state rotated 90 degrees from (d). It is explanatory drawing of the coupling of the applicator, (a) is a perspective view from the front side, (b) is a view from the front side, (c) is a side view, (d) is a longitudinal sectional view, (e) ) Is a side view rotated from (c), (f) is a longitudinal sectional view in the state of (e), (g) is a perspective view from the rear, and (h) is a view from the rear. It is explanatory drawing of the coating liquid container of the applicator, (a) is a perspective view from the front, (b) is a side view, (c) is a longitudinal sectional view, and (d) is a perspective view from the rear. . It is explanatory drawing of the knock stick of the applicator, (a) is a perspective view from the front side, (b) is a view from the front side, (c) is a side view, (d) is a longitudinal sectional view, e) is a rear perspective view, and (f) is a rear view. It is explanatory drawing of the axial main body of the applicator, (a) is a view from the front, (b) is a perspective view from the front, (c) is a side view, (d) is a vertical view, (e) Is a view from the rear. It is explanatory drawing of the knock stick holding body of the applicator, (a) is a view from the front side, (b) is a perspective view from the front side, (c) is a side view, (d) is a longitudinal sectional view , (E) is a rear view, and (f) is a rear perspective view. It is explanatory drawing of the valve seat of the applicator, (a) is a view from the front side, (b) is a perspective view from the front side, (c) is a side view, (d) is a longitudinal sectional view, e) is a rear view, and (f) is a rear perspective view.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
1-13 is explanatory drawing of the applicator which concerns on embodiment of this invention.
The applicator according to the embodiment employs a pump mechanism that houses a low-viscosity eyeliner cosmetic liquid (gel solution) with good elongation as a coating liquid in the container 20 and applies a shearing force to the coating liquid. The present invention relates to a cosmetic product in which a thin line can be drawn reliably on the tip of the body 12.
In the following description and drawings, the front and rear sides of the applicator are in the direction in which the applicator is provided with respect to the shaft body, for example, as shown in FIG. Is backwards.

  As shown in FIG. 1, the applicator according to the embodiment is an applicator provided with an applicator 12 at an axially forward portion of the shaft body 10 and provided with a pump mechanism that supplies the application liquid to the applicator. A cap 14 is detachably provided at the tip of the shaft body 10. 2 to 4 show the applicator with the cap 14 removed.

  The shaft main body 10 is a contact portion 18 with which the joint 16 abuts on the inner side of the shaft body 10 and a container 20 for containing the coating liquid, and is urged rearward by the elastic force of the first spring 22. The container 20 is provided so as to be movable forward and backward in the state.

  The container 20 is provided with a knock body (also referred to as a knock bar) 24 at the rear end for moving the container 20 forward against the urging force of the first spring by a user's knocking operation. It is done.

  In the front portion 20a of the container 20, a coating liquid guide pipe 26 that can be inserted and removed from the rear is provided inside the coating body 12, and as a pump mechanism, a forward direction is provided at a rear position of the coating liquid guide pipe 26. A front valve body 28 and a rear valve body 30 that allow discharge, a second spring (valve spring) 32 interposed between the front valve body 28 and the rear valve body 30, and a coating liquid guide pipe 26 are held. And the joint 16 that contacts the front valve body 28 at the rear end.

Here, the configuration of each unit will be described.
The cap 14 covers the application body 12 fitted to the tip portion 10 a of the shaft body 10. The cap 14 has a cylindrical outer cap portion 14a with a closed tip and an inner cap portion 14b that is in close contact with the outer peripheral surface of the tip shaft 34 (which is fitted to the tip portion 10a of the shaft body 10 to hold the application body 12). And a cap spring 14c that urges the inner cap portion 14b rearward so as to be in close contact with the front shaft. The outer cap portion 14a covers almost the entire front shaft 34 and comes into contact with the outer peripheral flange at the rear end of the front shaft 34, so that the cap 14 is fitted.

  The application body 12 is attached to the tip portion 10 a of the shaft body 10 so as to be surrounded by the tip shaft 34. The application body 12 can be made of various materials such as a tapered tip shape, a bundle of fibers, a fiber formed into a molded body, a porous resin body, or a natural product.

Although the coating liquid guide tube 26 is inserted into the coating body 12, whether the tip of the coating liquid guide tube 26 is the same as the tip surface of the tip shaft 34 during the non-knock operation in the state shown in FIGS. It is located behind it. Thereby, a coating liquid can be reliably supplied to the location which protrudes from the front axis | shaft 34 of the application body 12, ie, the location to apply.
The tip shaft 34 has a tapered, hollow, generally shell shape, and the application body 12 is inserted into the tip portion thereof.

The coating liquid container 20 is a container unit that is detachable from the shaft body 10 together with the knock body 24. A pump mechanism is provided at the front portion 20 a of the container 20.
As shown in FIG. 5, since the container 20 for the coating liquid is a container unit that can be detached from the shaft body, the coating unit can be replaced by replacing the container unit without replenishing the coating liquid after using the coating liquid. Since it can be resumed, the replenishment work of the coating liquid can be omitted, and it is convenient.

Further, as shown in FIG. 5, the container unit is a valve in which the joint 16 is inserted from the front into the front part 20a having a diameter smaller than the rear part of the container 20, and is fitted to the front part 20a from the front. Withdrawal is restricted by the seat 36.
In the container 20, the inner wall between the front portion 20a and the rear portion is formed with a hollow hole for coating liquid circulation, and the front valve body 28, the second valve hole is formed between the joint 16 of the pump mechanism and the inner wall. The spring 32 and the rear valve body 30 are mounted.

  A coating liquid 38 is filled in the rear portion of the container 20, and a follower 40 for preventing evaporation of the coating liquid made of a fluid or a resin body is filled behind the coating liquid 38. By filling the follower 40 behind the coating liquid, it is possible to reliably prevent a decrease due to evaporation of the coating liquid.

  As shown in FIG. 6, the coating liquid guide pipe 26 has a substantially hollow pipe shape, and is formed with a notch 26 a extending axially rearward from the tip of the coating liquid guide pipe 26. Since the notch 26a widens the discharge portion from the coating liquid guide tube 26 and is long with respect to the coating body 12, it is possible to quickly supply the liquid to the coating body 12.

  In the embodiment, the notch 26a has a bifurcated tip. However, more notches 26a can be formed to have a trifurcated or multi-grooved shape. Further, depending on the coating solution having a low viscosity, the notch 26a may not be provided.

  As shown in FIG. 7, the front valve body 28 and the rear valve body 30 constituting the pump mechanism have a generally cap or cap shape bulging toward the front, and are narrowly cut into a single letter at the tip. It is a valve body in which a slit 42 is rarely formed.

  That is, the front valve body 28 and the rear valve body 30 have their elasticity, so that the slit opens when the front side becomes lower pressure than the rear side, and conversely, the front side becomes higher pressure than the rear side. Sometimes it functions to close. The front valve body 28 and the rear valve body 30 bulge forward to form a slit 42 that opens and closes, and can be referred to as a duck bill type as if it were a duck beak.

  Although the front valve body 28 and the rear valve body 30 are repeatedly opened and closed, a shearing force is applied to the coating liquid. Even if the viscosity in the container 20 is high, the opening and closing operations are performed. With a shearing force, it can be liquefied and supplied to the coated body. In addition, since a low-viscosity cosmetic can be supplied to the coated body, this type of coating solution can be applied evenly on the skin and the like, and can be applied evenly. In the conventional pump mechanism of Patent Document 1 or the like, when the coating liquid has a high viscosity, it is difficult to apply without reducing the viscosity because the shearing force is not applied. Even a liquid can be used with a reduced viscosity.

The front valve body 28 and the rear valve body 30 are preferably made of an elastically deformable elastomer or a rubber elastic material such as silicone rubber so as to ensure the valve opening / closing operation.
The front valve body 28 and the rear valve body 30 have a double flange portion 44 formed on the outer periphery at the rear, and the flange portion 44 is in close contact with and slides on the inner wall in the front portion 20a of the container 20. The coating liquid does not leak.

  As shown in FIG. 8, the joint 16 has a substantially cylindrical shape with a narrowed tip portion, and a cylindrical portion 16a to which the coating liquid guide pipe 26 is attached is formed on the tip side, and the front valve is located on the rear side. It is formed in the shape of an arm into which the body 28 is inserted, and the flange 16b is expanded in diameter. A rib 16c is erected on the outer peripheral portion of the cylindrical portion on the distal end side to ensure a movement that does not shift the axis at the tip portion 20a of the container 20.

  As shown in FIG. 9, the front end 20a of the container 20 has an enlarged diameter inside the front end, and a valve seat is fitted to the enlarged diameter portion. 28 and the rear valve body 30 are smooth surfaces in sliding contact with the inner wall. A wall with a hole is formed at the boundary with the storage chamber behind the front portion 20a, and the rear valve body 30 is accommodated there.

  As shown in FIG. 10, the knock body 24 has a plurality of grooves 24b formed in a plurality of axial directions around a fitting portion 24a at the tip for fitting to the rear end portion of the container 20. The groove 24b functions to introduce air when the coating liquid in the container 20 is reduced.

  Further, a flange 24c is formed around the fitting portion 24a, and a groove is also formed at the rear portion of the flange 24c. As shown in FIG. 2, outside air passes through the groove from the rear side of the shaft body 10 in the assembled state. Air enters the shaft body 10 from the outer periphery of the flange 24c, and then air flows through the groove 24b of the fitting portion 24a to the rear side of the follower 40.

  As shown in FIG. 11, the shaft body 10 is formed with a plurality of hill-shaped portions around the periphery of the tip portion 10 a with a plurality of intervals around the tip shaft 34. . In addition, a rib 18 is formed in the front portion 10a so that the contact portion 18 protrudes in a cylindrical shape and is guided toward the rear end of the cylindrical contact portion 18. Further, the inner diameter of the rear part of the shaft body 10 is larger than the inner diameter of the central part, and the knock body holding body 46 is fitted. Further, the inner surface of the contact portion 18 that slides with the coating liquid guide tube 26 is sealed, and has a sealing structure that prevents leakage of the coating liquid.

  As shown in FIG. 12, the knock body holding body 46 is a substantially hollow cylindrical body having an outer diameter formed in a step shape with a small front portion and a large rear portion with a uniform inner diameter. It is. The inner diameter of the knock body holding body 46 is slightly larger than that of the knock body 24 so that the knock body 24 can move. Further, the diameter of the front portion is a diameter that abuts on the flange portion 44 of the knock body 24.

  As shown in FIG. 13, the valve seat 36 has a flange whose diameter is increased to the outer diameter of the distal portion. In addition, a chamfer is formed on the outer diameter of the rear portion to facilitate insertion.

  In the applicator of the embodiment, the cap 14 is initially attached as shown in FIG. 1 in an unused state or an unused state. In use, the cap 14 is removed from the tip 10a of the shaft body 10 as shown in FIG.

In order to use the applicator, when the application liquid is fed into the application body 12, the user performs a knocking operation to push the knock body 24.
By the knocking operation, as shown in FIG. 3, the container 20 moves forward against the urging force of the first spring 22 in the shaft body 10.
When the movement of the container 20 reaches a certain distance, the tip of the joint 16 hits the contact portion 18.

  When the user further knocks and pushes and moves the container 20 into the shaft body 10, as shown in FIG. 4, the joint 16 does not move any further. Only the front portion 20a of the container 20 moves forward. As a result, the front valve body 28 is pushed into the front portion 20a of the housing body 20 against the urging force of the second spring 32.

  By the operation of pushing the front valve body 28, the volume between the front valve body 28 and the rear valve body 30 is reduced, and the coating liquid in the space between the front valve body 28 and the rear valve body 30 is added. The front valve element 28 is opened by the pressure of the pressurized coating liquid, and the coating liquid is pumped into the coating liquid guide pipe 26. A compression stroke in which the coating liquid flows into the coating body 12 from the tip of the coating liquid guide tube 26 is performed.

  In the above compression stroke, as shown in FIGS. 3 to 4, the discharge amount of the coating liquid is determined according to the distance σ into which the front valve body 28 is pushed. Specifically, the discharge amount can be freely adjusted by setting the dimensions of the joint 16 and the contact portion 18 that push the front valve body 28. In this case, as shown in FIG. 4, the tip 20a of the container 20 has a cylinder function until the distance σ = 0, and the discharge amount of the coating liquid is set to the diameter of the tip 20a and the front valve body 28. Also, the discharge amount of the coating liquid can be determined.

  Further, as shown in FIGS. 3 to 4, the coating liquid guide tube 26 is inserted into the front portion of the coating body 12 by the knocking operation of the knock body 24. The coating liquid is sufficiently distributed to the body 12 to the inside of the front part. Since the notch 26a is formed at the tip of the coating liquid guide tube 26, the coating liquid penetrates evenly into the tip of the coating body 12 according to the length of the notch 26a as compared with the case where there is no notch. This makes it possible to supply the coating liquid promptly.

When the container 20 is moved backward by the biasing force of the first spring 22 in the shaft body 10 in the order shown in FIGS. 4, 3, and 2 by the knock release operation after the compression stroke, The expansion process is performed in the state of FIG. In this expansion stroke, the coating liquid guide pipe 26 comes out of the application body 12, and the joint 16 comes into contact with the abutment portion 18 so that the joint 16 is moved away from the abutment portion 18, and the pressed force is released. Therefore, the front valve body 28 is returned toward the front by the urging force of the second spring 32 in the front portion 20 a of the container 20.
As a result, the volume between the front valve body 28 and the rear valve body 30 is expanded, the pressure of the coating liquid is reduced, and the rear valve body 30 is opened. By this pressure reduction, the coating liquid in the container 20 is discharged. An expansion stroke that flows into the space between the front valve body 28 and the rear valve body 30 is performed.

  Since it comprised as mentioned above, in the applicator of embodiment, after discharging a coating liquid from the container 20 by a compression process, the coating liquid in a container is expanded between the said front valve body 28 and the said rear valve body 30 by an expansion process. When the air flows into the space, the space is depressurized. However, since the front valve body 28 does not open, air does not enter the space. Therefore, air is not mixed into the coating liquid.

  In addition, since the coating liquid is allowed to flow from the coating liquid guide tube 26 into the coating body only in the compression stroke, the discharge amount of the coating liquid can be set by setting the compression stroke (such as the cross-sectional area of the front portion 20a of the container 20 and the stroke setting). It can be set accurately and a stable amount can be supplied toward the application body 12.

  In the embodiment, as shown in FIG. 2, the application body 12 is attached to the tip portion 10a of the shaft body 10 so as to be surrounded by the tip shaft 34, and the tip end portion of the coating liquid guide pipe 26 is attached to the tip portion during the non-knock operation. If it is the same as the tip end surface of the shaft 34 or located behind it, the coating liquid can be reliably supplied to the portion protruding from the front shaft 34 of the application body 12, that is, the portion to be coated.

  The present invention is not limited to the embodiment, and various modifications can be made. For example, the applied body is not brush-shaped, but an open cell body or a guide groove can be formed inside to form an applied body.

  The applicator of the present invention can be used in cosmetics, writing instruments, and various applicators that can supply the application liquid to the applicator stably, with the applicator having a brush shape, brush shape, or the like.

DESCRIPTION OF SYMBOLS 10 Shaft body 10a Shaft body tip part 12 Application body 14 Cap 16 Joint 16a Cylindrical part 16b Flange 16c Rib 18 Contact part 20 Container 20a Container front part 22 First spring 24 Knock body 24a Knock body insertion Portion 24b Knock body groove 24c Knock body flange 26 Coating liquid guide tube 28 Front valve body 30 Rear valve body 32 Second spring 34 Front shaft 36 Valve seat 38 Coating liquid 40 Follower 42 Slit 44 Flange part 46 Knock body holding body σ Distance of pump operation

Claims (6)

In an applicator provided with an application body at the axial front end of the shaft body, and provided with a pump mechanism for supplying the application liquid to the application body,
The shaft main body is provided with a container for accommodating a coating liquid and disposed so as to be able to advance and retract in a state of being biased rearward by the resilient force of the first spring,
The container includes a knock body for moving the container forward against the urging force of the first spring by a user's knocking operation, a pump mechanism for compressing and decompressing the coating liquid, and a coating liquid And a coating liquid guide tube for guiding the liquid into the coating body,
A notch is formed from the tip of the coating liquid guide tube toward the rear in the axial direction,
The pump mechanism includes a front valve body and a rear valve body that are located behind the coating liquid guide pipe and allow forward discharge, and a second valve body interposed between the front valve body and the rear valve body. A spring,
Due to the knocking operation of the user, the housing body moves more than a certain distance against the biasing force of the first spring in the shaft body, and the front valve body is attached to the front portion of the housing body. When pushed against the force, the volume between the front valve body and the rear valve body is reduced, and a compression stroke is performed in which the application liquid is pressurized and the front valve body opens,
In the compression stroke, the tip of the coating liquid guide tube is inserted into the tip of the coating body, and the coating liquid flows into the coating body through the coating liquid guide pipe,
When the container moves backward by the biasing force of the first spring in the shaft main body by the knock releasing operation after the compression stroke, the front valve body is second toward the front in the front part of the container. And the volume between the front valve body and the rear valve body is expanded, the coating liquid is depressurized, the rear valve body is opened, and the coating liquid in the container is transferred to the front valve body and the rear valve body. An applicator characterized in that an expansion stroke flowing into the space between the rear valve bodies is performed. In the front portion of the container, a coating liquid guide tube that can be inserted and removed from the rear inside the coating body, and a joint that holds the coating liquid guide pipe and contacts the front valve body at the rear end, are provided.
The shaft body is provided with an abutting portion with which the tip of the joint abuts on the inner side of the tip portion,
When the container moves forward against the urging force of the first spring in the shaft main body by a knocking operation by the user, the joint moves together with the container and the coating liquid guide tube moves inside the coating body. And the joint comes into contact with the abutting portion, and the front valve body is pushed into the front portion of the container through the joint, and the compression stroke is performed.
When the container is moved backward by the biasing force of the first spring in the shaft body by the knock release operation after the compression stroke, the coating liquid guide tube is removed from the coating body, and the joint is The applicator according to claim 1, wherein the expansion stroke is performed away from the contact portion.   The applicator is attached to the front end of the shaft body so as to be surrounded by the front shaft, and the tip of the coating liquid guide tube is located at the same or the rear of the front end surface of the front shaft during non-knock operation. The applicator according to claim 1 or 2, wherein the applicator is provided.   The front valve body or the rear valve body is made of a rubber elastic material such as an elastically deformable elastomer or rubber having a substantially cap shape bulging toward the front, and a slit is formed at a tip portion, and the front valve body The slit opens when the front side of the body or the rear valve body is at a lower pressure than the rear side, and conversely, when the front side is at a higher pressure than the rear side, the slit is opened. The applicator according to claim 1, wherein the applicator is characterized by the following. Applicator according to one of the possible housing of the coating solution is containing body unit detachable from the shaft body from claim 1, wherein 4. Housed in the body, applicator according to one of claims 1 5, characterized in that filled the follower behind the coating solution.

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