JP4757539B2 - Weighing cap - Google Patents

Description

  The present invention relates to a measuring cap attached to a container.

  In the measuring cap attached to the container, there is a measuring cap that makes the discharge amount variable by changing the distance from the pouring hole in the measuring cap to the bottom of the measuring cap (for example, see Patent Document 1). In such a measuring cup, the upper pouring pipe moves up and down in the center of the rotating inner cylinder fitted inside the inner cylinder side frame, and the upper pouring pipe is inserted into the lower pouring pipe via the guide cylinder. Connected to the outlet pipe.

This conventional measuring cap has a drawback that the number of parts increases.
JP-A-9-104456

  In view of the above fact, an object of the present invention is to provide a measuring cap that can change the depth of the measuring chamber with a small number of parts.

The measuring cap of the present invention described in claim 1 is attached to the outlet of the container, and has a liquid inflow part into which the liquid in the container can flow in when the container is squeezed, and a liquid measuring chamber together with the liquid inflow part. An expansion tube portion that is formed and foldable in a bellows shape with a liquid inflow port so as to expand and contract, and a valve that is integrated with the expansion tube portion and disposed on the container side. A seat part, and a valve part that contacts the valve seat part in an initial state to close the liquid flow path, and adjusts the telescopic pipe part to expand and contract while opening the liquid flow path by relative movement with respect to the container; It is characterized by having.

  According to the measuring cap of the present invention as set forth in claim 1, when the container is squeezed, the liquid in the container flows from the liquid inlet to the liquid inflow part via the telescopic pipe part. Here, since the liquid inflow portion and the telescopic tube portion form a measurement chamber, the liquid flows into the measurement chamber when the liquid flows into the liquid inflow portion. When changing the measurement of the liquid, the depth of the measurement chamber is changed by expanding and contracting the telescopic tube part folded in a bellows shape and changing the height position of the liquid inlet.

Further , according to the measuring cap of the present invention, in the initial state, the valve portion comes into contact with the valve seat portion and closes the liquid flow path. The liquid inside does not spill. In use, when the adjustment unit is moved relative to the container, the liquid flow path is opened and the telescopic tube unit is expanded and contracted, so that the depth of the measuring chamber can be obtained while allowing the liquid to flow into the measuring chamber. Can be changed.

A measuring cap according to a second aspect of the present invention is the measuring cap according to the first aspect, wherein the operation cylinder member provided with the adjusting portion is guided by a guide groove in an outer peripheral portion of the liquid inflow portion. The telescopic tube portion can be pulled out stepwise to a position in a direction away from the container and can be pushed in stepwise to a position in a direction approaching the container. The adjusting portion is arranged so as to be urged in a direction opposite to the container side.

According to the measuring cap of the present invention described in claim 2, the operation cylinder member provided with the adjusting portion is stepped to a position in a direction away from the container by being guided by the guide groove on the outer peripheral portion of the liquid inflow portion. Can be pulled out in a stepwise manner and can be pushed into the container in a stepwise direction. On the other hand, the telescopic tube portion is arranged so as to exert a reaction force on the liquid inflow portion side and urge the adjustment portion in the direction opposite to the container side. When the relative movement is gradually made to the position in the contact / separation direction, the telescopic tube portion expands and contracts following the adjusting portion of the operation tube member.

  As described above, the measuring cap of the present invention has an excellent effect that the depth of the measuring chamber can be changed with a small number of parts.

A first embodiment of a measuring cap according to the present invention will be described with reference to the drawings.
(First embodiment)
As shown in FIG. 1, the container 12 to which the measuring cap 10 is attached has a cylindrical opening neck portion 14, and a male screw portion 14 </ b> A for attaching the measuring cap is formed on the outer peripheral surface side of the opening neck portion 14. Is formed.

  The measuring cap 10 according to the present embodiment includes a cap body 20, a dispensing pipe 18, and an operation cylinder member 30.

  The cap body 20 includes a liquid inflow portion 22 that is substantially cylindrical and has one axial side (the lower side in FIG. 1A) curved inward, and has an outer periphery from a cylindrical middle portion of the liquid inflow portion 22. A mounting portion 26 projecting to the side is provided.

  The attachment portion 26 is formed so as to surround the outer peripheral surface of the liquid inflow portion 22 in the axial direction on one side (the lower side in FIG. 1A) with an interval therebetween. A female screw portion 26A that can be screwed with the male screw portion 14A of the opening neck portion 14 is formed in the portion. By screwing the female screw portion 26 </ b> A into the male screw portion 14 </ b> A, the liquid inflow portion 22 is attached to the container outlet portion 16 as the outlet of the container 12 via the attachment portion 26.

In the drawing, in order to clearly show the shapes of the female screw portion 26A and the male screw portion 14A, a slight gap is interposed between the female screw portion 26A and the male screw portion 14A. Actually, the female screw portion 26A and the male screw portion 14A are screwed together with high accuracy. (The same applies to other figures.)
The liquid inflow portion 22 has an inwardly curved portion 23 that is curved inward and is formed into a container shape, and the distal end side of the inwardly curved portion 23 is a cylindrical small-diameter cylindrical portion 23 </ b> A. The communication is possible, and the liquid in the container 12 can flow when the container 12 is squeezed (details will be described later).

  In the liquid inflow portion 22, a guide groove 24 </ b> A is formed on the outer peripheral portion of the cylindrical protrusion 24 on the side opposite to the attachment side to the container 12 (upper side in FIG. 1A). As shown on the right side of FIG. 1 (A), the guide groove 24A has a stepped shape extending alternately in the axial direction of the cylindrical protrusion 24 and in a direction perpendicular to the axial direction. As shown in B), a plurality of locations (a total of 4 locations in the present embodiment) are formed on the outer peripheral portion of the cylindrical protrusion 24.

  As shown in FIG. 1A, an operation cylinder member 30 that is a separate body from the cap body 20 is movably attached to the cylindrical protrusion 24 of the cap body 20. The operation cylinder member 30 includes a cylindrical pouring part 32 having both sides in the axial direction open and one side (above FIG. 1A) serving as a spout 32A. Is formed with a gripping portion 32H extending outward and a cylindrical large-diameter portion 34 extending from the gripping portion 32H. The large-diameter portion 34 extends to the side opposite to the pouring spout 32 </ b> A (downward in FIG. 1A) and surrounds the outer peripheral surface of the pouring portion 32 at a predetermined interval.

  An abutting portion 32B projecting outward is formed in an annular shape at the tip of the pouring portion 32 on the attachment side (the lower side in FIG. 1A). In the attached state, the abutting portion 32B is a cylindrical projecting portion. It is arranged in contact with the inner peripheral surface of 24. A plurality of projections 34A projecting inward (four in this embodiment, as shown in FIG. 1 (B)) are formed on the tip of the attachment side of the large-diameter portion 34. The protrusion 34A is arranged in the guide groove 24A. Here, the operation cylinder member 30 can be moved relative to the cap body 20 by moving the protrusion 34A along the guide groove 24A. Since the guide groove 24A guides the protrusion 34A, the operation cylinder member 30 can be pulled out stepwise to a position away from the container 12. In the large-diameter portion 34, a mark (not shown) (such as a triangle) is displayed at the position of the outer peripheral surface corresponding to the protruding portion 34A.

  A plurality of rod-like arms 36 extending in the axial direction from the inner side of the pouring part 32 (in this embodiment, as shown in FIG. 1B) are located closer to the mounting side of the operation cylinder member 30 (lower side in FIG. 1A). As shown in the figure, three arms are formed, and the tip of the arm 36 is connected to a bottomed pipe portion 38 formed in a cylindrical shape around the axis. As shown in FIG. 2, the bottomed pipe portion 38 is closed on the base end side (upper side in FIG. 2) and extends toward one side (the container 12 side when attached). .

  As shown in FIG. 1, the pouring pipe 18 is disposed on the outer peripheral side of the bottomed pipe portion 38 and on the inner peripheral side of the small diameter cylindrical portion 23 </ b> A of the cap body 20. A small-diameter cylindrical tube portion 18A extending toward the bottom (not shown) of the container 12 is provided. The cylindrical pipe portion 18A is used for sucking up the liquid in the container 12 when the container 12 is squeezed.

  The dispensing pipe 18 includes a telescopic tube portion 19 arranged from the vicinity of the tip of the small diameter cylindrical portion 23A toward the opposite side of the container 12 (upward in FIG. 1A). In this embodiment, the portion 19 is formed integrally with the cylindrical tube portion 18A. The telescopic tube portion 19 is disposed on the outer peripheral side of the bottomed pipe portion 38 and is folded in a bellows shape so as to be stretchable and urged toward the opposite side of the container 12 (upward in FIG. 1A). It has become.

  Between the expansion tube portion 19 and the cylindrical tube portion 18A (on the container 12 side as viewed from the expansion tube portion 19), a protruding portion 17 as an annular valve seat portion that is integrated with these and protrudes inward is disposed. In addition, the operation cylinder member 30 comes into contact with the tip outer peripheral valve portion 38A of the bottomed pipe portion 38 in an initial state before being pulled out from the cap body 20. The liquid flow path from the container 12 to the liquid inflow part 22 (measuring chamber 28) is blocked by the contact between the projecting part 17 and the tip outer peripheral valve part 38A.

  As shown in FIG. 2, the distal end portion of the telescopic tube portion 19 serves as an open liquid inlet 19 </ b> A that is used for inflow of liquid into the liquid inflow portion 22, and a part thereof abuts on the arm 36. It is like that.

  The telescopic tube part 19 forms a liquid measuring chamber 28 together with the liquid inflow part 22. The measuring chamber 28 is a space for temporarily storing an amount of liquid necessary for discharge. Here, the depth of the measuring chamber 28 is determined by the height position of the liquid inlet 19A. In the present embodiment, the height position of the liquid inlet 19A is changed by the expansion and contraction of the telescopic tube portion 19 to change the height of the measuring chamber 28. The depth can be changed.

  Next, the handling and operation of the measuring cap 10 in the first embodiment will be described.

  As shown in FIG. 1A, in an initial state before use, that is, before the operation cylinder member 30 is pulled out from the cap body 20, the container 12 is placed in an upright state and a bottomed pipe is used. The tip outer peripheral valve portion 38A of the portion 38 comes into contact with the projecting portion 17 below the telescopic tube portion 19 to close the liquid flow path, so that the liquid in the container 12 does not spill even when the container 12 falls down. For this reason, it is not necessary to attach a lid to the measuring cap 10 separately.

  When discharging the liquid in the container 12 for a predetermined small volume (for example, 20 ml), first, the gripping portion 32H is gripped and the operating cylinder member 30 is pulled away from the container 12, thereby causing the protrusion 34A to guide the groove. It is moved by one step along 24A (see FIG. 2). When the operation cylinder member 30 shown in FIG. 2 is moved relative to the direction away from the container 12 (withdrawal direction (arrow P direction)), the tip outer peripheral valve portion 38A of the bottomed pipe portion 38 is below the telescopic tube portion 19. The liquid flow path is opened away from the projecting portion 17, the arm 36 moves in a direction away from the container 12 (arrow P direction), and the telescopic tube portion 19 extends by following the biasing force. .

  Thereby, the depth of the measurement chamber 28 from the bottom 22A of the liquid inflow portion 22 to the height position of the liquid inflow port 19A becomes a depth corresponding to the amount of movement of the operation cylinder member 30, and has a small capacity (for example, 20 ml). A weighing chamber 28 is formed.

  Next, when the container 12 is squeezed, that is, the volume in the container 12 is reduced by pressing the container 12 or the like, and the liquid in the container 12 is squeezed out, the liquid in the container 12 is poured into the dispensing pipe 18 (cylindrical tube portion). 18A and the telescopic tube portion 19), and flows into the liquid inflow portion 22 from the liquid inlet 19A. (In the figure, the flow of the liquid is indicated by an arrow.) Here, since the liquid inflow portion 22 and the telescopic tube portion 19 form a measuring chamber 28, the liquid flows into the liquid inflow portion 22, The liquid will flow into the measuring chamber 28. At this time, a small volume (for example, 20 ml) of liquid is stored in the measuring chamber 28, and an excess amount of liquid is returned into the container 12 through the dispensing pipe 18.

  When the container 12 is tilted from this state, a small volume (for example, 20 ml) of liquid in the measuring chamber 28 is discharged from the spout 32A.

  When changing the discharge amount of the liquid from a predetermined small volume (for example, 20 ml) to a predetermined large volume (for example, 60 ml), it is separated from the container 12 while gripping the grip portion 32H and rotating the operation cylinder member 30. The projection 34A is moved to a three-stage position along the step-like guide groove 24A (see FIG. 3). When the operation cylinder member 30 shown in FIG. 3A is relatively moved in the direction away from the container 12 (the pulling direction (arrow P direction)), the arm 36 is also separated from the container 12 (arrow P direction). The telescopic tube portion 19 is moved by the urging force and extends.

  As a result, the depth of the measuring chamber 28 from the bottom 22A of the liquid inflow portion 22 to the height position of the liquid inlet 19A becomes a depth corresponding to the amount of movement of the operation cylinder member 30, and has a large capacity (for example, 60 ml). A weighing chamber 28 is formed.

  Next, after the container 12 is squeezed and a large volume (for example, 60 ml) of liquid is stored in the measuring chamber 28, the container 12 is tilted, and the large volume (for example, 60 ml) of liquid in the measuring chamber 28 is discharged from the spout 32A. Discharged.

  In the present embodiment, when the discharge amount of the liquid is changed from a predetermined small volume (for example, 20 ml) to a predetermined medium volume (for example, 40 ml), it is separated from the container 12 while rotating the operation cylinder member 30. By pulling in the direction of movement (arrow P direction), the protrusion 34A is moved to a two-stage position along the guide groove 24A.

  Further, when the discharge amount of the liquid is changed from a predetermined large volume (for example, 60 ml) to a predetermined small volume (for example, 20 ml), the direction of approaching the container 12 while rotating the operation cylinder member 30 (arrow P) The projection 34A is moved to the position of one step along the guide groove 24A. At this time, the telescopic tube portion 19 is pushed by the arm 36 and contracts.

Thus, when changing the measurement of the liquid, the depth of the measurement chamber 28 is changed by expanding and contracting the telescopic tube portion 19 folded in a bellows shape and changing the height position of the liquid inlet 19A.
(Second Embodiment)
Next, a second embodiment of the measuring cap will be described with reference to FIGS. The second embodiment is an embodiment of the present invention. The configuration of the measuring cap 10 according to the second embodiment is characterized in that the expansion pipe portion 19 is not provided in the pouring pipe 18 but the expansion tube portion 19 is provided in the cap body 20, and the other configurations are as follows. Since the configuration is almost the same as that of the first embodiment, the same reference numerals are given and description thereof is omitted.

  As shown in FIG. 4, a cylindrical pouring pipe 15 having a cylindrical shape is attached to the inner peripheral surface of the small diameter cylindrical portion 23 </ b> A, and this cylindrical pouring pipe 15 is formed at the bottom of the container 12 (not shown). ).

  The telescopic tube portion 19 is a part of the cap body 20 by integral molding, and is provided on an extension of the small diameter cylindrical portion 23A of the cap body 20. Further, on the inner side of the small diameter cylindrical portion 23A near the telescopic tube portion 19 (on the container 12 side when viewed from the telescopic tube portion 19), an annular valve seat portion that is integrated with the telescopic tube portion 19 and protrudes inwardly. The protruding portion 23B is arranged so as to come into contact with the outer peripheral valve portion 38A of the bottomed pipe portion 38 in the initial state before the operation cylinder member 30 is pulled out from the cap body 20. The liquid flow path from the container 12 to the liquid inflow portion 22 (metering chamber 28) is blocked by the contact between the protruding portion 23B and the tip outer peripheral valve portion 38A.

  In the initial state before use, that is, the state before the operation cylinder member 30 is pulled out from the cap body 20, the tip outer peripheral valve portion 38 </ b> A of the bottomed pipe portion 38 comes into contact with the protruding portion 23 </ b> B of the cap body 20. Even if the container 12 falls down, the liquid in the container 12 does not spill. For this reason, it is not necessary to attach a lid to the measuring cap 10 separately. When the operation cylinder member 30 is relatively moved in the direction away from the container 12 (withdrawal direction (arrow P direction)), the distal outer peripheral valve portion 38A of the bottomed pipe portion 38 is separated from the protruding portion 23B of the cap body 20. The liquid flow path is opened.

  The handling of the measuring cap 10 in the second embodiment is the same as that in the first embodiment. FIG. 5 shows a state in which the protrusion 34A is moved by one step along the guide groove 24A, and FIG. 6 shows a state in which the protrusion 34A is moved to a position in three steps along the step-shaped guide groove 24A. Indicates. In FIGS. 5 and 6, the flow of liquid during squeezing is indicated by arrows.

Even when the configuration of the second embodiment is applied, when changing the measurement of the liquid, the expansion / contraction tube portion 19 folded in a bellows shape is expanded and contracted, and the height position of the liquid inlet 19A is changed. The depth of the chamber 28 can be changed.
(Third embodiment)
Next, a third embodiment of the measuring cap will be described with reference to FIGS. The third embodiment is not an embodiment of the present invention but a reference example. In the measuring cap 10 according to the first and second embodiments, when the operation cylinder member 30 is relatively moved in the direction away from the container 12 (arrow P direction), the telescopic tube portion 19 follows this by the biasing force. In the measuring cap 10 according to the third embodiment, the operation tube member 40 is separated from the container 12 when the telescopic tube portion 19 is locked to a part of the operation tube member 40. In the case of relative movement in the direction (direction of arrow P), the telescopic tube portion 19 extends following this.

  Other configurations are substantially the same as those in the first embodiment, and thus the same reference numerals are given and description thereof is omitted. Since the operation cylinder member 40 has substantially the same configuration as the operation cylinder member 30 in the first embodiment except for the points described below, the same parts are denoted by the same reference numerals and description thereof is omitted. To do.

  A plurality of rod-like arms 46 extending in the axial direction from the inside of the pouring portion 32 are provided in the middle portion in the axial direction of the operation cylinder member 40 shown in FIG. 7 (in this embodiment, a two-dot chain line in FIG. 7B). 3), and the tip end portion of the arm 46 is connected to a bottomed pipe portion 48 formed in a cylindrical shape around the axis. As shown in FIG. 7 (A), the bottomed pipe portion 48 is closed on the base end side (upper side of FIG. 7 (A)), and shown in FIGS. 7 (A) and 7 (B). As shown, a plurality of arc pieces 49 (three in this embodiment, as shown in FIG. 7B) extend toward one side (the side of the container 12 at the time of attachment). The distal end portion of the arc piece 49 extends to a position aligned with the distal end portion of the pouring portion 32 on the container 12 side, and a locking portion 49A is formed inward.

  On the inner side surrounded by the arc piece 49, the telescopic pipe portion 19 of the pouring pipe 18 is disposed. A locked portion 19 </ b> C formed in a hook shape toward the outside is provided on the outer peripheral portion on the distal end side of the telescopic tube portion 19. It is designed to be locked. In the attached state of the measuring cap 10, the operation cylinder member 40 is rotatable relative to the telescopic tube portion 19 while the locked portion 19 </ b> C is locked to the locking portion 49 </ b> A.

  As a result, when the operation cylinder member 40 is relatively moved in the direction away from the container 12 (arrow P direction), it is opposite to the pulling direction (arrow P direction) side of the operation cylinder member 40 in the locked portion 19C. The side surface (the surface facing downward in FIG. 7A) is pushed toward the pulling-out direction (arrow P direction) of the operation tube member 40 by the locked portion 19C, so that the telescopic tube portion 19 is The operation cylinder member 40 is extended to follow.

  A stopper portion 18B formed in a bowl shape toward the outside is provided on the outer peripheral portion of the cylindrical tube portion 18A near the telescopic tube portion 19, and the pouring pipe 18 is pulled away from the container 12. At this time, the cap main body 20 is supported by being in contact with an annular protrusion 23C formed inwardly at the tip of the small diameter cylindrical portion 23A.

  Here, the operation of the measuring cap 10 in the third embodiment will be described.

  When discharging the liquid in the container 12 by a predetermined volume, the operating cylinder member 40 is rotated in the direction away from the container 12 (arrow P direction), and the protrusion 34A is moved along the stepped guide groove 24A. To a predetermined stage (first, second, or third stage) (see FIGS. 8 and 9).

  As shown in FIGS. 8 and 9, when the operation cylinder member 40 is relatively moved in the direction away from the container 12 (the pulling direction (arrow P direction)), the locking portion 49 </ b> A of the arc piece 49 is also moved from the container 12. The telescopic tube part 19 in which the part to be locked 19 </ b> C is locked to the locking part 49 </ b> A extends in accordance with the operation cylinder member 40. At this time, since the stopper portion 18B of the dispensing pipe 18 is supported by being in contact with the protruding portion 23C of the cap body 20, the telescopic tube portion 19 extends while the position of the cylindrical tube portion 18A is maintained.

  The handling of the measuring cap 10 in the third embodiment is the same as that in the first embodiment. FIG. 8 shows a state in which the protrusion 34A is moved by one step along the guide groove 24A, and FIG. 9 shows a state in which the protrusion 34A is moved to a three-step position along the step-like guide groove 24A. Indicates.

As described above, even when the configuration of the third embodiment is applied, when changing the measurement of the liquid, the telescopic tube portion 19 folded in a bellows shape is expanded and contracted, and the height of the liquid inlet 19A is increased. By changing the position, the depth of the measuring chamber 28 can be changed.
(Fourth embodiment)
Next, a fourth embodiment of the measuring cap will be described with reference to FIGS. Note that the fourth embodiment is not an embodiment of the present invention but a reference example. Moreover, about the structure part similar to the 1st-3rd embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted. Since the operation cylinder member 50 has substantially the same configuration as the operation cylinder member 30 in the first embodiment except for the points described below, the same parts are denoted by the same reference numerals and description thereof is omitted. To do.

  As shown in FIG. 10A, around the axis of the cap body 20, a small-diameter pipe portion 25 having a smaller diameter than the small-diameter cylindrical portion 23A is provided in an extended portion of the small-diameter cylindrical portion 23A. The distal end portion of the small diameter pipe portion 25 extends to a position that is substantially aligned with the distal end portion of the cylindrical projecting portion 24 of the cap body 20.

  A plurality of rod-like arms 56 extending in the axial direction from the inner side of the pouring portion 32 are provided at the tip of the mounting side of the operation cylinder member 50 shown in FIG. 10 (the lower side in FIG. 10A) (in this embodiment). As shown in FIG. 10B, three are formed. The distal end portion of the arm 56 is connected to an extension pipe portion 58 as a moving tube portion formed in a cylindrical shape around the axis.

  As shown in FIG. 10 (A), the extension pipe portion 58 extends toward the spout 32A side (above FIG. 10 (A)), and the extended tip portion 58A (upper portion of FIG. 10 (A)). Side) is blocked.

  A protruding plug portion 58Z is formed on the opposite side of the extending tip portion 58A so as to close the tip opening portion 25A of the small-diameter pipe portion 25 in the initial state before the operation cylinder member 50 is pulled out from the cap body 20. It is like that. In the present embodiment, the position of the extended distal end portion 58A is a position retracted to the inner side (lower side in FIG. 10A) than the position where the spout 32A is formed.

  The extension pipe part 58 forms a liquid measuring chamber 28 together with the liquid inflow part 22, and includes a wall part 58 </ b> B disposed so as to be able to overlap with a part of the liquid inflow part 22. As shown in FIGS. 10A and 10B, in the extension pipe portion 58, a plurality of liquid inlets 58C are provided on the side portion close to the extension tip portion 58A (in this embodiment, as shown in FIG. 10B). As shown, 4) are formed through. The liquid inflow port 58 </ b> C is for liquid inflow to the liquid inflow portion 22.

  Here, handling and operation of the measuring cap 10 in the fourth embodiment will be described.

  As shown in FIG. 10A, in the initial state before use, that is, before the operation cylinder member 50 is pulled out from the cap body 20, the tip opening 25A of the small-diameter pipe portion 25 of the cap body 20 is The liquid in the container 12 does not spill even when the container 12 falls due to being blocked by the protruding plug part 58Z of the operation cylinder member 50.

  When discharging the liquid in the container 12 for a predetermined small volume (for example, 20 ml), first, the gripping portion 32H is gripped and the operating cylinder member 50 is pulled away from the container 12 so that the protrusion 34A is guided into the guide groove. Move one step along 24A. As shown in FIG. 11, when the operation cylinder member 50 is relatively moved in a direction away from the container 12 (drawing direction (arrow P direction)), the protruding plug portion 58Z of the operation cylinder member 50 has a small diameter of the cap body 20. The interior of the container 12 and the liquid inflow portion 22 are separated from the tip opening 25A of the pipe portion 25, and are communicated with each other via the cylindrical pouring pipe 15, the small diameter pipe portion 25, and the liquid inflow port 58C.

  At this time, the depth of the measuring chamber 28 from the bottom 22A of the liquid inflow portion 22 to the height position of the liquid inflow port 58C is a depth corresponding to the moving amount of the operation cylinder member 50, and has a small capacity (for example, 20 ml). A weighing chamber 28 is formed.

  Next, when the container 12 is squeezed, the liquid in the container 12 flows from the liquid inflow port 58 </ b> C into the liquid inflow part 22 through the cylindrical pouring pipe 15 and the small diameter pipe part 25. Here, since the liquid inflow portion 22 and the extension pipe portion 58 form a measuring chamber 28, the liquid flows into the measuring chamber 28 when the liquid flows into the liquid inflow portion 22. At this time, a small volume (for example, 20 ml) of liquid is stored in the measuring chamber 28, and an excess amount of liquid is returned into the container 12 via the small diameter pipe portion 25 and the cylindrical pouring pipe 15.

  When the container 12 is tilted from this state, a small volume (for example, 20 ml) of liquid in the measuring chamber 28 is discharged from the spout 32A.

  When changing the discharge amount of the liquid from a predetermined small volume (for example, 20 ml) to a predetermined large volume (for example, 60 ml), it is separated from the container 12 while gripping the grip portion 32H and rotating the operation cylinder member 50. As shown in FIG. 12, the protrusion 34A is moved to a three-stage position along the step-like guide groove 24A. When the operation cylinder member 50 is relatively moved in the direction away from the container 12 (withdrawal direction (arrow P direction)), the wall portion 58B moves relative to the liquid inflow portion 22, and the height position of the liquid inflow port 58C Changes.

  At this time, the depth of the measuring chamber 28 from the bottom 22A of the liquid inflow portion 22 to the height position of the liquid inflow port 58C is a depth corresponding to the moving amount of the operation cylinder member 50, and has a large capacity (for example, 60 ml). A weighing chamber 28 is formed.

  Next, after the container 12 is squeezed and a large volume (for example, 60 ml) of liquid is stored in the measuring chamber 28, the container 12 is tilted, and the large volume (for example, 60 ml) of liquid in the measuring chamber 28 is discharged from the spout 32A. Discharged.

  In this embodiment, when the discharge amount of the liquid is changed from a predetermined small volume (for example, 20 ml) to a predetermined medium volume (for example, 40 ml), it is separated from the container 12 while rotating the operation cylinder member 50. By pulling in the direction of movement (arrow P direction), the protrusion 34A is moved to a two-stage position along the guide groove 24A.

  In the first to fourth embodiments, the measuring cap 10 is attached to the container 12 by screwing the female screw portion 26 </ b> A of the measuring cap 10 with the male screw portion 14 </ b> A of the opening neck 14 of the container 12. However, the attachment form of the measurement cap to the container is not limited to this, and the measurement cap may be attached to the container in other attachment forms such as fitting the measurement cap to the opening neck of the container.

It is a figure which shows the state before use of the measurement cap which concerns on the 1st Embodiment of this invention. FIG. 1A is a longitudinal sectional view. FIG. 1B is a cross-sectional view corresponding to a cross section taken along line 1B-1B in FIG. It is a longitudinal cross-sectional view which shows the state which moved the operation cylinder member of the measuring cap which concerns on the 1st Embodiment of this invention by one step. (Partial change of the cut surface is shown.) It is a figure which shows the state which moved the operation cylinder member of the measurement cap which concerns on the 1st Embodiment of this invention to the position of 3 steps | paragraphs. FIG. 3A is a longitudinal sectional view. FIG. 3B is a cross-sectional view corresponding to a cross section taken along line 3B-3B of FIG. It is a figure which shows the state before use of the measuring cap which concerns on the 2nd Embodiment of this invention. FIG. 4A is a longitudinal sectional view. FIG. 4B is a cross-sectional view corresponding to a cross section taken along line 4B-4B of FIG. 4A. It is a longitudinal cross-sectional view which shows the state which moved the operation cylinder member of the measuring cap which concerns on the 2nd Embodiment of this invention by one step. (Partial change of the cut surface is shown.) It is a figure which shows the state which moved the operation cylinder member of the measuring cap which concerns on the 2nd Embodiment of this invention to the position of 3 steps | paragraphs. FIG. 6A is a longitudinal sectional view. FIG. 6B is a cross-sectional view corresponding to a cross section taken along line 6B-6B in FIG. 6A. It is a diagram showing a pre-use state of the metering cap according to the third embodiment (reference example). FIG. 7A is a longitudinal sectional view. FIG. 7B is a cross-sectional view corresponding to a cross section taken along line 7B-7B of FIG. 7A. Is a longitudinal sectional view showing a third embodiment states the operation tube member of the metering cap in accordance with Reference Example is moved one step in. (Partial change of the cut surface is shown.) Is a longitudinal sectional view showing a third embodiment while being moved the operating cylinder member of the metering cap in accordance with Reference Example to a position of three stages. (Partial change of the cut surface is shown.) It is a diagram showing a pre-use state of the metering cap according to a fourth embodiment (reference example). FIG. 10A is a longitudinal sectional view. FIG. 10B is a cross-sectional view corresponding to a cross section taken along line 10B-10B in FIG. 10A. Is a longitudinal sectional view showing a fourth embodiment state the operation tube member of the metering cap in accordance with Reference Example is moved one step in. (Partial change of the cut surface is shown.) It is a longitudinal cross-sectional view which shows the state which moved the operation cylinder member of the measurement cap which concerns on 4th Embodiment (reference example) to the position of 3 steps | paragraphs . (Partial change of the cut surface is shown.)

Explanation of symbols

10 Measuring cap 12 Container 16 Container outlet (outlet)
17 Projection (valve seat)
19 telescopic pipe part 19A liquid inlet 22 liquid inflow part 23B protrusion part (valve seat part)
24A Guide groove 28 Weighing chamber 30 Operation cylinder member (adjustment part)
38A Front peripheral valve part (valve part)

Claims (2)

A liquid inflow portion that is attached to the outlet of the container and into which the liquid in the container can flow when the container is squeezed;
A liquid measuring chamber is formed together with the liquid inflow portion, and is provided with a liquid inflow port and is folded into a bellows shape so as to be expandable and contractible, and an expansion tube portion that changes the depth of the measuring chamber by expansion and contraction;
A valve seat portion that is integrated with the telescopic tube portion and disposed on the container side;
An adjustment portion that includes a valve portion that contacts the valve seat portion in an initial state to close the liquid flow path, opens the liquid flow path by relative movement with respect to the container, and expands and contracts the expansion and contraction pipe section;
A measuring cap characterized by comprising: The operation cylinder member provided with the adjusting portion is guided in the guide groove on the outer peripheral portion of the liquid inflow portion so that it can be pulled out stepwise to a position in a direction away from the container and in a direction approaching the container. It is provided so that it can be pushed into the position step by step.
2. The measuring device according to claim 1, wherein the telescopic tube portion is disposed so as to urge the adjusting portion in a direction opposite to the container side by taking a reaction force on the liquid inflow portion side. cap.

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