WO2019138549A1

WO2019138549A1 - Liquid application tool

Info

Publication number: WO2019138549A1
Application number: PCT/JP2018/000689
Authority: WO
Inventors: 俊司一橋; 昭彦及川
Original assignee: ハクゾウメディカル株式会社; 日本ベクトン・ディッキンソン株式会社
Priority date: 2018-01-12
Filing date: 2018-01-12
Publication date: 2019-07-18
Also published as: JPWO2019138549A1; JP6453529B1

Abstract

Provided is a liquid application tool that can prevent erroneous operation because of unforeseen loads, vibration, and the like without reducing workability. A cylindrical body has a protrusion protruding toward the inside of the cylindrical body from the inside surface thereof. A container has a facing part facing the inside surface of the cylindrical body on an opening part side. A groove for sliding of the protrusion is provided on the outside surface of the facing part. The groove is formed from a first groove and a second groove in a straight-line shape along the axial direction of the container and a third groove in a straight-line shape orthogonal to the first groove and the second groove. One end of the first groove extends from the edge of the opening part. The third groove has a sliding restraining part for restraining the sliding of the protrusion.

Description

Liquid applicator

The present invention relates to a liquid applicator. More specifically, it comprises a container filled with liquid inside and a container whose opening is sealed with a sealing material, and a tubular body having an application part for applying the liquid and a perforation part for perforating the sealing material, The present invention relates to a liquid applicator which allows the container to move relative to the cylindrical member so that the perforated portion pierces the sealing material and causes the liquid to flow out to the application portion.

Conventionally, as a liquid application tool as described above, for example, the one described in Patent Document 1 is known. This applicator includes a bottle filled with a drug solution, a main body on which the porous body is mounted, and a connector connecting the two, and the convex rib on the outer surface of the connector is locked in the guide groove of the main body Thus, it is possible to push the bottle into the main body while rotating it. However, since the end of the guide groove is short and flat (horizontal) (FIGS. 5 to 7 of Patent Document 1), vibration or an unexpected load in the axial direction occurs when assembling or transporting the liquid applicator. And, the bottle easily rotates and starts to move in the axial direction. As a result, the seal material at the bottle opening may be broken by the inner cylinder inside, which may cause the chemical solution to flow out.

JP, 2013-23282, A

SUMMARY OF THE INVENTION In view of such conventional circumstances, an object of the present invention is to provide a liquid applicator which prevents a malfunction due to an unexpected load, vibration or the like without deteriorating the workability.

In order to achieve the above object, the liquid applicator according to the present invention is characterized in that the container is filled with the liquid inside and the opening is sealed with a sealing material, the coating part for applying the liquid, and the sealing material And a cylindrical body having a perforated portion for perforating the hole, and by moving the container relative to the cylindrical body, the perforated portion pierces the sealing material and causes the liquid to flow out to the application portion. In the above, the cylindrical body has a projection that protrudes from the inner surface thereof toward the inside of the cylindrical body, and the container has an opposing portion facing the inner surface of the cylindrical body on the opening side. A groove in which the projection slides is engraved on the outer surface of the opposite portion, and the groove is a linear first groove and a second groove along the axial direction of the container, the first groove and the second groove. It consists of a straight third groove perpendicular to the two grooves, and one end of the first groove is from the edge of the opening Mashimashi, the third groove is to have a suppressing sliding suppressing unit the sliding of said projection.

According to the above configuration, the projection can be slid relative to the groove by inserting the projection provided on the inner surface of the cylindrical body into the guide groove provided on the outer surface of the opposing portion of the container, and the cylindrical body and the container can be Relatively movably linked. Here, since the first end of the linear first groove extending in the axial direction of the container extends from the edge of the opening, only by pushing one of the container and the cylindrical body at the time of assembly (insertion) Well, good working. And since the first groove is orthogonal to the linear third groove, it can not be pushed further in the axial direction by the third groove. Therefore, a malfunction (movement) in the axial direction due to an unexpected external force at the time of assembly, transportation, etc. is prevented. And since the 3rd slot has a slide control part which controls slide of a projection, relative movement to the peripheral direction of a container is controlled. Therefore, a malfunction (movement) in the circumferential direction due to an unexpected external force or vibration at the time of assembly or transport is prevented. Therefore, it is possible to prevent an erroneous operation due to an unexpected load, vibration or the like, and to prevent an unexpected perforation of the sealing material.

In such a case, the sliding suppression portion is a convex portion located in the third groove near the intersection with the first groove, and the third groove is formed deeper than the first groove It is good. Thereby, the step between the convex portion and the first groove and the third groove holds the protrusion at the intersection of the first groove and the third groove, thereby further suppressing the erroneous operation in the axial direction and the circumferential direction . Further, by positioning the convex portion in the vicinity of the intersection of the first groove and the third groove, the convex portion is separated from the second groove orthogonal to the third groove. As a result, even if the protrusion climbs over the protrusion, the distance from the second groove to the second groove is secured, so that the entry of the protrusion from the third groove into the second groove can be suppressed, and an axial malfunction (movement ) To prevent. Furthermore, by the step between the first groove and the third groove, accidental omission of the tubular body after assembly can be prevented.

In such a configuration, it is desirable that the second groove be formed shallower than the third groove. Thereby, the approach of the protrusion from the third groove to the second groove can be further suppressed.

An air vent groove along the axial direction may be engraved in at least one of the inner surface of the cylindrical body and the outer surface of the facing portion. As a result, internal air can be released to the outside at the time of drilling and sliding (relative movement), so that sliding (relative movement) can be performed smoothly, and the movement and application of the liquid that has flowed out can be quickened, improving the workability. Do.

In such a case, the perforated portion has a base end portion which is fitted into the inside of the cylindrical body, and the cylindrical body communicates with the main body portion of the cylindrical body and the application portion. The air release groove may be located at the main body portion, and the fixing portion may have a recess for communicating the main body portion and the communication portion. Even when the perforated portion is fixed inside the tubular body, the concave portion allows the communicating portion to communicate with the main portion without being blocked by the base end. Therefore, the flow path (airway) of air is secured from the application portion to the outside of the cylindrical body through the inside of the cylindrical body. This also makes the movement and application of the spilled liquid faster.

Further, the recess may be located on an extension of the air vent groove. As a result, the air flow paths (airways) are arranged on the same straight line, which results in smoother air movement, allowing the liquid to flow and be applied more rapidly, and the workability is improved.

At the end (rear end) opposite to the opening of the opposite portion, a first mark is provided at a portion intersecting the extension of the first groove, and opposite to the application portion of the cylindrical body The side end (rear end) may have a second mark at a portion intersecting the extension line of the protrusion. As a result, by combining the first mark and the second mark, it becomes a standard of assembly (insertion) work, and the workability is good. In addition, the misalignment of the first mark and the second mark facilitates confirmation of malfunction.

The groove portion and the protrusion may be provided as a pair in point symmetry with respect to a central axis of the container. Since each member is symmetrically arrange | positioned with respect to a central axis by this, the load applied at the time of operation of a container and a cylindrical body can be balanced, and operativity is good.

In such a case, the third groove may be a circular arc having a central angle of 90 ° with respect to the central axis of the container. As a result, it is possible to prevent a decrease in operability without causing an excessive movement (rotation) distance, and secure a movement (rotation) distance in the circumferential direction to secure an erroneous operation prevention in the axial direction.

The perforated portion may have a base end portion which is fitted into the inside of the cylindrical body, and the base end portion may have a pair of cutout portions larger than the projection at least in part. As a result, the projection does not inhibit the insertion of the perforated portion during the assembly (insertion) operation, so that it can be smoothly inserted and the workability is good.

A raised portion may be formed in the vicinity of an end (rear end) opposite to the side orthogonal to the third groove of the second groove. Thereby, the malfunction of return of the protrusion after pushing can be suppressed.

According to the characteristics of the liquid applicator according to the present invention, it is possible to prevent a malfunction due to an unexpected load, vibration or the like without reducing the workability.

Other objects, configurations, and effects of the present invention will be apparent from the following section of the embodiments of the present invention.

It is a perspective view showing the liquid applicator concerning the present invention, and is a figure showing the wearing state before use. It is a perspective view which shows the liquid applicator concerning this invention, and is a figure which shows the state at the time of use (at the time of application | coating). It is a disassembled perspective view of a liquid applicator. It is a top view of a container. FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3; FIG. 4 is a cross-sectional view taken along the line BB of FIG. 3; It is an expansion perspective view near a slot. FIG. 4 is an enlarged view of a portion a of FIG. 3; FIG. 4 is an enlarged view of a portion b of FIG. 3; It is sectional drawing of a cylindrical body. It is a perspective view of a cylindrical body. It is a front view of a perforation part. FIG. 12 is a cross-sectional view taken along the line CC in FIG. It is a partially broken view which shows the state (before rotation) which assembled the liquid applicator. FIG. 14 is a cross-sectional view taken along the line DD in FIG. 13 showing a state (after rotation) of the liquid applicator in use. FIG. 14 is a cross-sectional view taken along line EE of FIG.

Next, the present invention will be described in more detail, referring to the attached drawings as appropriate.
The liquid applicator 1 according to the present invention, as shown in FIGS. 1 and 2, generally applies the liquid L to the container 2 in which the liquid L is filled and the opening 21 is sealed with the sealing material 22. It comprises a cylindrical body 3 having a perforated portion 5 for piercing the coating portion 4 and the sealing material 22. In the present embodiment, the application section 4 side is the front side, and the bottom 25 side of the container 2 is the rear side.

In the present invention, the liquid L filled in the container 2 is not particularly limited, and is, for example, an antiseptic solution or a drug solution applied to the skin of a patient before surgery. In such a case, a medical worker such as a doctor holds the container 2 and rotates and pushes the tubular body 3. By this operation (relative movement of the container 2 with respect to the cylindrical body 3), the perforated portion 5 pierces the sealing material 22, and the liquid L is discharged from the opening 21 toward the application portion 4. Then, the medical worker applies the liquid L to the patient by the application unit 4. In addition, the material and shape of the container 2 and the cylindrical body 3 can be suitably selected according to the physical property of the liquid L with which it is filled, sterilization treatment, etc., and are not specifically limited.

As shown in FIGS. 2 to 4, the container 2 has a substantially cylindrical shape, and has a facing portion 24 facing the inner surface 30 a of the cylindrical body 3 from the flange 23 to the opening 21. Further, the container 2 has a grip portion 26 provided with knurls 26 a on the outer surface from the flange 23 to the bottom portion 25. The flange 23 is provided substantially at the center of the container body 20 in the axial direction X. On the flange 23 (rear end of the container 2), a first mark 29 is provided at the intersection with the extension line E1 passing through the center of the first groove 11.

On the end face 21a of the opening 21, as shown in FIG. 7, a hemispherical raised portion 21b to be a welding surface of the sealing material 22 is annularly formed. The center n2 of the raised portion 21b is located outside the center n1 of the end face 21a. As a result, welding can be performed in a state in which the sealing material 22 is tensioned, and drilling can be performed with a smaller load to improve workability. In addition, although the aluminum laminate film is used for the sealing material 22, for example, it can select suitably according to the physical property of the liquid L with which it is filled, sterilization treatment, etc., It does not specifically limit.

As shown in FIGS. 2 to 6, a groove portion 10 in which the projection 32 of the cylindrical body 3 slides is engraved on the outer surface of the facing portion 24. At the rear (flange 23 side) of the groove portion 10, a pair of annular projecting portions 27 and a tapered portion 28 for gradually enlarging the outer diameter of the facing portion 24 toward the flange 23 are provided. By these, it is suppressed that the liquid L which flowed out leaks from the clearance gap between the container 2 and the cylindrical body 3 to the exterior.

As shown in FIGS. 2-8, the groove portion 10 is a straight line perpendicular to each of the first groove 11 and the second groove 12 and the first groove 11 and the second groove 12 along the axial direction X of the container 2 The third groove 13 is shaped like a circle. The first groove 11 has a tapered end 11 a (a starting end 10 x of the groove 10) extending from the edge 21 c of the opening 21. The third groove 13 has, in the vicinity of the first intersection portion 10c1 between the third groove 13 and the first groove 11, a convex portion 14 as a sliding suppressing portion which suppresses the sliding of the projection 32. The third groove 13 is a circular arc having a central angle θ of 90 °, and is formed deeper than both the first groove 11 and the second groove 12. A raised portion 15 is formed at the rear end portion 12 a of the second groove 12 (end 10 y of the groove portion 10). In the present embodiment, a pair of groove portions 10 is provided point-symmetrically with respect to the central axis A of the container 2.

As shown in FIGS. 2, 9 and 10, the cylindrical body 3 communicates the application portion 4, the perforation portion 5, the cylindrical main body portion 30 facing the opposing portion 24, the main body portion 30 and the application portion 4. And a communicating portion 31. On the inner surface 30a of the main body 30, there are provided a protrusion 32 projecting toward the central axis A, a straight air vent groove 33 along the axial direction X, and a fixing portion 34 for fitting and fixing the perforated portion 5 It is provided. In the present embodiment, the protrusions 32 have a hemispherical shape, and a pair of the protrusions 32 are provided point-symmetrically with respect to the central axis A.

The air vent groove 33 is formed toward the opening 35 from the vicinity of one of the protrusions 32, as shown in FIGS. The fixing portion 34 has an annular shape, and includes an annular abutment portion 34a that abuts on the back surface of the base end portion 51 described later, and an annular convex portion 34b. The inner diameter of the contact portion 34 a is smaller than the inner diameter of the main body portion 30. The contact portion 34 a is formed with a recess 36 for connecting the main body portion 30 and the communication portion 31. A second mark 39 is provided on the outer surface of the flange 35a of the opening 35 (rear end of the cylindrical body 3) at the intersection with the extension line E2 along the axial direction X from the projection 32.

As shown in FIGS. 1 and 2, the application unit 4 is located at the front end of the cylindrical body 3 and has a sponge 41 for applying the liquid L to a human body or the like and a flange 42 for fixing the sponge 41. The sponge 41 is made of, for example, a porous material such as a felt or an open cell material, and is fixed to the flange 42 by adhesion or the like.

As shown in FIGS. 9 and 10, the flange 42 is provided with a plurality of through holes 43 at its central portion. The through hole 43 supplies the liquid L to the sponge 41 via the communication portion 31. In the present invention, the material, structure, shape, size, number, position and the like of the sponge 41, the flange 42 and the through hole 43 may be appropriately selected according to the physical properties of the liquid L to be filled and the outflow amount of the liquid. Well, it is not particularly limited. Although not shown, a single or a plurality of slits may be formed on the surface of the sponge 41, and the shape, size, number, position and the like may be appropriately selected.

As shown in FIGS. 2, 11 and 12, the holed portion 5 includes a substantially cylindrical base end 51 to be inserted into the fixing portion 34, a hole 52 for drilling the sealing material 22, and the base end 51. And a substantially cylindrical support 53 for supporting the perforated body 52. The proximal end portion 51 has a pair of

notches

54 and 54 in which a part of the outer periphery is cut away. The perforated body 52 is formed of a plurality of support columns 55 formed in a substantially V-shape having a sharp angle toward the main body 30 side, and has a substantially conical shape. Further, the upper end of the support portion 53 between the plurality of columns 55 is sharpened and functions as the auxiliary blade 56 of the column 55. When the sealing material 22 is pierced, the liquid L flows from the gap 57 between the columns 55 to the application section 4 through the internal space 50S and the communication space 31S. In the present embodiment, the perforated portion 5 is molded separately from the cylindrical body 3.

The assembly and use of the liquid applicator 1 will now be described with reference to FIGS. 1A, 1 B, 2, 13-15.
First, the holed portion 5 is fitted into the main body portion 30, and is fitted and fixed to the contact portion 34a and the annular convex portion 34b of the fixing portion 34. The annular convex portion 34 b has a height (inner diameter) such that the proximal end 51 of the perforated portion 5 to be inserted can pass therethrough. Here, since the pair of

notches

54, 54 are formed in the base end 51, the protrusions 32 become the bases by aligning the positions of the protrusions 32 and the notches 54 when the perforations 5 are inserted. The insertion can be smoothly performed without colliding with the end 51. Further, even if the base end 51 is fixed to the fixing portion 34, the recess 36 is in communication with the internal space 30S of the main body 30 and the communicating portion 31 without being blocked by the base end 51 in close contact with the contact portion 34a. It communicates with the space 31S. Therefore, since the air inside the cylindrical body 3 can flow through the recess 36 at the time of application, the flowability of the liquid L is improved, and smooth application is possible.

Next, the tubular body 3 is slidably attached to the container 2 filled with the liquid L. Under the present circumstances, although the projection 32 of the inner surface 30a of the main-body part 30 is inserted in the groove part 10 of the outer surface of the opposing part 24, if the cylindrical body 3 is not transparent, grasping the position of the projection 32 from the outside (visual) Can not. In the present embodiment, the flange 23 of the container 2 is provided with the first mark 29 located on the same straight line as the first groove 11, and the flange 35 a of the cylindrical body 3 is located on the same straight line as the projection 32. 39 are provided. Therefore, when attaching the cylindrical body 3 to the container 2, the projection 32 can be easily fitted into the end 11 a of the first groove 11 by aligning the first mark 29 and the second mark 39. Workability is also good.

After inserting the projection 32 into the first groove 11, when the container 2 is pushed into the cylindrical body 3, the projection 32 slides on the first groove 11 and collides with the third groove 13 and stops. Here, the third groove 13 is formed deeper than the first groove 11, and the convex portion 14 is formed in the third groove 13 in the vicinity of the first intersection portion 10c1 of the first groove 11 and the third groove 13 It is done. A recess is formed in the first intersection portion 10c1 by the step and the convex portion 14 of the two grooves. And the relative movement to the axial direction X is restricted by the level difference of a slot, and omission of cylindrical object 3 after wearing is prevented. Furthermore, the relative movement in the circumferential direction is restricted by the convex portion 14 to prevent the rotation operation. As described above, after the mounting operation is completed, the protrusion 32 is held at the first intersecting portion 10 c 1 (recess) by the step between the convex portion 14 and the first groove 11 and the third groove 13. Therefore, a malfunction (relative movement) in the axial direction X and the circumferential direction due to an unexpected external force or vibration is prevented.

Furthermore, in the present embodiment, the third groove 13 is a circular arc having a central angle θ of 90 °, and is formed deeper than the second groove 12. Therefore, even if the projection 32 moves over the convex portion 14, it can not move in the axial direction X unless it moves to the second intersection portion 10 c 2 of the second groove 12 and the third groove 13, so malfunctioning Perforation of the sealing material 22 can be prevented. Moreover, the second groove 12 is formed higher than the third groove 13. Therefore, even if the second crossing portion 10c2 is reached, the step between the second groove 12 and the third groove 13 further prevents a malfunction in the axial direction X.

At the time of use (application), the container 2 is relatively rotated in the circumferential direction with respect to the cylindrical body 3 so as to move the projection 32 held at the first intersection portion 10c1 toward the second intersection portion 10c2. (Twist). Here, since the third groove 13 is a circular arc having a central angle θ of 90 °, the rotational distance of the container 2 with respect to the cylindrical body 3 is relatively short, and a movement (rotation) distance in the circumferential direction is secured While preventing the operation, the amount of rotation is small and the workability is good.

Then, the container 2 is moved relative to the cylindrical body 3 in the axial direction X (pushing) so that the projection 32 abuts on the rear end 12a from the second intersection 10c2. The protruding portion 15 in the vicinity of the rear end portion 12a formed in the second groove 12 prevents the reverse movement of the abutting (pushed in complete) protrusion 32.

While sliding (relatively moving) the projections 32 from the second intersection 10 c 2 to the rear end 12 a, the piercing body 52 pierces the sealing material 22 and discharges the liquid L from the container 2. Here, the air vent groove 33 and the recess 36 allow air to flow between the main body internal space 30S and the communication space 31S of the cylindrical body 3 that receives the liquid L and the outside of the main body 30, and the container 2 and the cylinder The air inside the cylindrical body 3 can be released to the outside during relative movement with the rod 3. Therefore, the fluidity of the liquid L is improved and the relative movement is also smooth, so that the coating operation can be performed quickly. In particular, in the present embodiment, since the air vent groove 33 and the recess 36 are arranged on the same straight line along the axial direction X, the air vent groove 33 and the recess 36 function as straight airways, and the air is It becomes easy to distribute and enables smoother application.

Finally, reference is made to other embodiments of the present invention. In addition, the same code | symbol is attached | subjected to the member similar to the above-mentioned embodiment.
In the embodiment described above, the convex portion 14 which is made to project from the groove bottom of the third groove 13 is used as the sliding suppressing portion 14. However, the sliding suppression portion 14 only needs to suppress sliding (movement) in the groove of the projection 32. For example, even if it is a narrow portion in which the groove width is narrowed by projecting (raising) a part of the groove side surface Good. Moreover, it is also possible to suppress a slide by providing the resistance increase means to which the resistance of the slide of the protrusion 32 is made to increase in a part of groove part 10. FIG. In addition, the same aspect is possible for the protruding portion 15 of the second groove 12.

Moreover, although the convex part 14 was arrange | positioned in 1st crossing part 10c1 vicinity, you may provide in the middle of the 3rd groove 13, and you may provide in multiple places. However, when arranged in the vicinity of the first intersecting portion 10c1, the moving distance from the convex portion 14 to the second intersecting portion 10c2 can be secured, so that the above embodiment is excellent in preventing unexpectedness in the axial direction X.

In the above embodiment, one air vent groove 33 is provided on the inner surface 30 a of the main body 30 so as to be on the same straight line as the recess 36 along the axial direction X. However, the shape, position, and number of the grooves can be appropriately set as long as the air flow between the cylindrical body 3 and the outside can be secured. For example, in addition to the inner surface 30 a of the cylindrical body 3, it may be provided on the outer surface of the facing portion 24 or both of them. However, the above embodiment is excellent in securing the airway of air and realizing smooth application.

Although the perforated body 52 is erected on the support portion 53 provided on the base end portion 51 in the above embodiment, the present invention is not limited to this. For example, the support portion 53 may be omitted. However, the above embodiment is excellent from the viewpoint of the strength of the perforated body 55 (the support 55).

In the above embodiment, the holding portion 26 having the knurling 26a is provided in the container 2. However, not only the knurling 26a but also other non-slip means or decoration may be provided or may be omitted. The first mark 29 and the second mark 39 may be in any form as long as they can be viewed from the outside, and the shape and the like are not particularly limited.

1: liquid applicator, 2: container, 3: cylindrical body, 4: application part, 5: perforated part, 10: groove part, 11: first groove, 11a: one end, 12: second groove, 13: third Groove, 14: convex portion (sliding suppression portion), 20: container body, 21: opening, 21c: edge, 22: sealing material, 24: facing portion, 30: main portion, 30a: inner surface, 31: Communication part, 32: projection, A: central axis, E1: extended line, L: liquid (chemical solution), n1, n2: central, X: axial direction, θ: central angle

Claims

The container is provided with a container filled with liquid inside and an opening part sealed with a sealing material, and a tubular body having an application part for applying the liquid and a perforation part for perforating the sealing material, and the container The liquid applicator according to claim 1, wherein the perforation portion pierces the sealing material and moves the liquid to the application portion by moving the cylinder relative to the cylindrical body.
The cylindrical body has a projection which protrudes from the inner surface thereof to the inside of the cylindrical body,
The container has a facing portion facing the inner surface of the cylindrical body on the opening side,
A groove on which the projection slides is engraved on the outer surface of the facing portion,
The groove portion includes a linear first groove and a second groove along the axial direction of the container, and a linear third groove orthogonal to the first groove and the second groove,
One end of the first groove extends from the edge of the opening,
The third groove is a liquid applicator having a slide restraining portion which suppresses the slide of the protrusion.
The liquid application according to claim 1, wherein the slide suppressing portion is a convex portion located in the third groove near the intersection with the first groove, and the third groove is deeper than the first groove. Equipment.
The liquid applicator according to claim 2, wherein the second groove is shallower than the third groove.
The liquid applicator according to claim 1, wherein an air vent groove along the axial direction is formed in at least one of the inner surface of the cylindrical body and the outer surface of the facing portion.
The perforated portion has a base end portion which is fitted into the inside of the cylindrical body, and the cylindrical body is a communication portion which communicates the main body portion of the cylindrical body with the application portion, and the base end. The air vent groove is located in the main body portion, and the fixing portion has a recess for communicating the main body portion and the communication portion while avoiding the base end portion. The liquid applicator according to claim 4.
The liquid applicator according to claim 5, wherein the recess is located on an extension of the air vent groove.
The end of the opposite portion opposite to the opening has a first mark at a portion intersecting the extension of the first groove, and the end of the cylindrical body opposite to the application portion The liquid applicator according to claim 1, further comprising a second mark at a portion intersecting the extension line of the protrusion.
The liquid applicator according to claim 1, wherein the groove portion and the protrusion are provided in a point symmetrical manner with respect to a central axis of the container.
The liquid applicator according to claim 8, wherein the third groove is a circular arc having a central angle of 90 ° with respect to the central axis of the container.
The liquid applicator according to claim 8, wherein the perforated portion has a base end portion to be inserted into the inside of the cylindrical body, and the base end portion has a pair of cutouts larger than the projection at least in part. .
The liquid applicator according to claim 1, wherein a raised portion is formed in the vicinity of an end opposite to the side orthogonal to the third groove of the second groove.