JP7001409B2 - Container with two liquid storage chambers - Google Patents

Description

The present invention relates to a container provided with two liquid storage chambers, in which various liquids such as different cosmetics are separately stored in the two liquid storage chambers, and the various liquids contained are discharged separately from each liquid storage chamber.

Conventionally, this kind of container has two liquid storage chambers arranged side by side, and each liquid storage chamber stores different liquids, and each liquid storage chamber is on the same side in the vertical direction, for example, on the upper side. In general, a pump is separately arranged and the liquid in each liquid storage chamber is discharged separately or at the same time by operating these pumps (Patent Document 1). A double container consisting of an inner container and an outer container is also known, but in this conventional double container, the liquid storage chamber is only the inner container, and a pump for discharging the liquid into the inner container is used. On the other hand, the outer container is configured as a protective container for the inner container (Patent Document 2).

Japanese Patent No. 5868678 Japanese Patent No. 5789063

For this reason, according to the conventional container for accommodating liquids described above, it is possible to accommodate two different liquids in the dual configuration, but since the liquid accommodating chambers are arranged side by side, the container becomes large and when going out. It has the inconvenience that it is not suitable for carrying around. Further, in the dual configuration, since the liquid storage chamber is substantially one, there is an inconvenience that two different liquids cannot be stored. The present invention eliminates these inconveniences, allows two different liquids such as cosmetics contained in a container to be discharged separately, and can be miniaturized and is suitable for carrying. It is intended to provide a container with a containment chamber.

In order to achieve this object, the container provided with the two liquid storage chambers according to claim 1 of the present invention includes an inner liquid storage chamber and an outer liquid storage chamber for storing different liquids, and each liquid storage chamber is provided. Is provided with a liquid discharge portion on the opposite side in the vertical direction, and each of the liquid discharge portions is composed of a pump on one side and a discharge port on the other side .

According to the container provided with the two liquid storage chambers according to claim 1 of the present invention, different liquids are stored in the inner liquid storage chamber and the outer liquid storage chamber, and the liquid discharge portion of each liquid storage chamber is vertically oriented. Since it is provided on the opposite side of the container, it is possible to reduce the size by making the container a double structure, and it is possible to discharge different liquids from each liquid storage chamber separately.

A central longitudinal front view showing a first embodiment of the present invention. A central longitudinal front view showing a second embodiment of the present invention. Similarly, a partially enlarged central longitudinal front view showing the start of liquid discharge from the pump. Similarly, a partially enlarged central longitudinal front view showing the end of liquid discharge of the pump. Similarly, a partially enlarged central longitudinal front view showing the liquid suction operation of the pump. A central longitudinal front view showing a third embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described. First, the first embodiment will be described with reference to FIG. As shown in FIG. 1, the container 1 includes an inner liquid storage chamber A and an outer liquid storage chamber B. The inner liquid storage chamber main body 2 has a bottom and is almost cylindrical, has a convex curved bottom surface, gradually expands in diameter toward the upper end, and further expands in diameter at the uppermost end to form a step portion. The diameter portion 2a is formed, and the inner peripheral surface of the maximum diameter expansion portion 2a is liquid-tightly fixed to the stepped portion of the lower end outer peripheral surface of the annular inner peripheral wall 4a in the container shoulder portion 4 by laser welding. The upper end of the container shoulder portion 4 is reduced in diameter to form a small diameter opening 4d. The space formed by the small-diameter opening 4d and the inner peripheral wall 4a of the container shoulder portion 4 and the inner liquid storage chamber main body 2 constitutes the inner liquid storage chamber A, and the small-diameter opening 4d is the liquid in the inner liquid storage chamber A. It is an opening for mounting the discharge part.

The outer liquid storage chamber main body 3 is substantially cylindrical, and the lower end is reduced in diameter to form a small diameter opening 3a, while the upper end is on the outer peripheral surface of the lower end of the outer peripheral wall 4b of the container shoulder 4 and the lower surface of the annular convex edge 4c. It is liquid-tightly fixed by laser welding. The space formed by the outer liquid storage chamber main body 3, the inner peripheral wall 4a and the outer peripheral wall 4b of the container shoulder portion 4, and the inner liquid storage chamber main body 2 constitutes the outer liquid storage chamber B. Further, the small-diameter opening 3a serves as an opening for mounting the liquid discharge portion of the outer liquid storage chamber B. The inner liquid storage chamber main body 2 and the outer liquid storage chamber main body 3 have an axis X as a central axis, and the small diameter opening 3a of the outer liquid storage chamber B and the small diameter opening 4d of the inner liquid storage chamber A are , Each liquid storage chamber A, B is located on the opposite side in the vertical direction, that is, on the opposite side in the vertical direction of the container 1.

A male screw 4e is provided on the outer periphery of the small diameter opening 4d, and a bottomed cylindrical pump mounting body 5 having an upper surface portion is fixed by screwing a female screw 5a on the inner peripheral surface to the male screw 4e. There is. A double-walled mounting cylinder 5c having a fitting recess 5b is projected from the upper surface of the pump mounting body 5, and the liquid stored in the inner liquid storage chamber A (not shown) is formed in the mounting cylinder 5c. The pump 10 which is a liquid discharging portion for discharging an appropriate amount of the same below to the outside of the container 1 is attached and fixed by fitting the upper end of the housing 11 into the fitting recess 5b. The upper surface of the flange portion 11a of the housing 11 is in liquidtight contact with the lower surface of the upper surface portion of the pump mounting body 5, and the lower surface is in liquidtight contact with the upper end surface of the small diameter opening 4d via the seal ring 12. ..

The fitting cylinder 14a of the drive head 14 is fitted to the substantially cylindrical upper piston 13 located at the upper end of the pump 10. The lower end of the outer peripheral surface of the drive head 14 faces the inner peripheral surface of the annular guide wall 5d integrally erected on the upper surface of the pump mounting body 5. Further, the drive head 14 is provided with a discharge nozzle 15 that communicates with the fitting cylinder 14a, and the discharge nozzle 15 communicates with the inside of the housing 11 via the upper piston 13. The drive head 14 can move up and down, and the upper piston 13 also moves up and down with this up and down movement.

The upper piston 13 is supported on the inner peripheral surface of the mounting cylinder 5c so as to be vertically movable, and the lower end portion is expanded and thinned to extend into the housing 11 and is arranged so as to be vertically movable in the housing 11. It is engaged with the outer stage portion 16a of the substantially cylindrical lower piston 16. The lower end of the upper piston 13 is in sliding contact with the inner peripheral surface of the housing 11 and has a sealing function. Further, a plurality of convex portions 13a are formed on the inner surface of the enlarged diameter boundary portion of the upper piston 13, and the top of the conical head 16b integrally provided at the upper end of the lower piston 16 engages with these convex portions 13a. ing. Then, a plurality of blades are provided around the conical head 16b to form a communication passage 16c, and the inside of the lower piston 16 and the upper piston are provided through the space between the communication passage 16c and each of the convex portions 13a. The inside of 13 is in communication. The lower end portion and the central portion of the lower piston 16 are in sliding contact with the inner peripheral surface of the housing 11 and have a sealing function.

A coil spring 18 is disposed between the support 17 fixed to the lower part of the housing 11 and the inner stage portion 16d of the lower piston 16, and the lower piston 16 is elastically urged upward by the coil spring 18 to cause the coil spring 18 to be elastically urged upward. The lower end of the is fixed to the support 17. Further, in the housing 11, a capacity control rod 19 that also serves as a guide when the coil spring 18 expands and contracts is arranged. Reference numerals 20 and 21 are ventilation holes provided in the housing 11, the ventilation holes 20 adjust the pressure in the space formed by the housing 11 and the upper piston 13, and the ventilation holes 21 are spaces formed by the housing 11 and the lower piston 16. It adjusts the pressure of.

Reference numeral 22 is a ball valve, which is arranged on the valve seat 11b of the housing 11 and controls the inflow of liquid from the introduction port 11c which is the lower end opening of the housing 11. Further, the upper end portion of the introduction pipe 23 is inserted and fixed to the lower end of the housing 11 from the introduction port 11c. The introduction pipe 23, the housing 11, the capacity control rod 19, the lower piston 16, the upper piston 13, the pump mounting body 5, and the fitting cylinder 14a described above are arranged coaxially with the axis X.

On the other hand, a bottomed cylindrical discharge cylinder 24 having a discharge port 24a on the bottom surface is liquid-tightly fixed to the small-diameter opening 3a of the outer liquid storage chamber main body 3, and the discharge port 24a of the discharge cylinder 24 discharges liquid. Make up the part. A male screw 3b is formed on the outer peripheral surface of the small diameter opening 3a. The lower cap 25 having an inner cylinder 25a having a female screw 25b screwable with the male screw 3b formed on the inner peripheral surface thereof has the small diameter opening 3a by screwing the female screw 25b into the male screw 3b. It is attached to the small diameter opening 3a and removed from the small diameter opening 3a by releasing the screwed state. The lower cap 25 has a convex portion 25c that rushes into the discharge port 24a and closes the discharge port 24a in the mounted state. A bottomed cylindrical upper cap 26 having an upper surface portion is detachably fitted to the container shoulder portion 4 on the inner peripheral surface of the lower end thereof.

Subsequently, the discharge operation of the above-described embodiment will be described. First, an operation of discharging a liquid such as cosmetics stored in the outer liquid storage chamber B to the outside will be described. In the initial standby state (state in FIG. 1) in which a predetermined amount of liquid (not shown) is stored in the outer liquid storage chamber B, the lower cap 25 is rotated to release the screwed state of the female and female screws 25b and 3b. When the lower cap 25 is removed, the discharge port 24a is exposed. Here, if the container 1 is shaken in the vertical direction with the discharge port 24a facing downward, the liquid in the outer liquid container chamber B is discharged from the discharge port 24a to the outside in an appropriate amount.

Next, the operation of discharging the liquid such as cosmetics stored in the inner liquid storage chamber A to the outside will be described. In the state of FIG. 1, when the upper cap 26 is removed and the drive head 14 is pushed down, the upper piston 13 is lowered, and the lower piston 16 is also lowered against the elastic force of the coil spring 18. As a result, the pressure in the housing 11 increases, and the pressure causes the liquid in the housing 11 below the lower piston 16 to start moving from the communication passage 16c into the upper piston 13 through the lower piston 16.

When the drive head 14 is further pushed down and the lower end of the drive head 14 reaches the lowest lowering position in contact with the upper surface portion of the pump mounting body 5, the lowering is prevented. In this state, the pressure in the housing 11 becomes maximum, and the liquid in the housing 11 that has almost moved in the lower piston 16 further moves into the upper piston 13 and is discharged together with the liquid in the upper piston 13. It is discharged from 15.

Here, when the pushing force applied to the drive head 14 is released, the lower piston 16, the upper piston 13, and the drive head 14 return to their original positions by the elastic force of the coil spring 18, and are in the standby state again. At this time, the pressure in the housing 11 becomes smaller than the pressure in the inner liquid storage chamber A, the ball valve 22 is opened, and the liquid in the inner liquid storage chamber A flows into the housing 11 through the introduction pipe 23. Then, it is ready for the next operation.

Subsequently, the second embodiment of the present invention will be described with reference to FIGS. 2 to 5. This embodiment uses a so-called back suction type pump that prevents dripping, and differs from the first embodiment described above only in the fixed structure of the inner liquid storage chamber body and the configuration related to the pump. Is. Therefore, only the configurations different from those of the first embodiment will be described below, and for the same configurations, the corresponding components are given the same reference numerals, and detailed description thereof will be omitted. As shown in FIG. 2, the inner liquid storage chamber main body 42 provided in the container 51 is formed on the outer peripheral surface of the thin portion 42a at the upper end thereof and at the stepped portion of the lower end inner peripheral surface of the annular inner peripheral wall 4f in the container shoulder portion 4. It is liquid-tightly fixed by laser welding.

As shown in FIGS. 2 to 5, a fitting cylinder 34a of the drive head 34 is fitted to the substantially cylindrical upper piston 33 located at the upper end of the pump 30. The lower end of the outer peripheral surface of the drive head 34 is positioned corresponding to the inside of the annular guide wall 35d integrally erected on the upper surface of the pump mounting body 35. Further, the drive head 34 is provided with a discharge port 34b for discharging the liquid so as to communicate with the upper piston 33 via the fitting cylinder 34a.

The upper piston 33 is vertically and vertically supported by the mounting cylinder 35c of the pump mounting body 35, the lower portion becomes a large diameter portion 33a to form a step portion 33b, and the outer peripheral surface of the large diameter portion 33a is the mounting cylinder. It is formed so that it can be slidably contacted with the inner peripheral surface of 35c. The upper end portion of the lower piston 36 is fitted and fixed to the upper piston 33. The lower piston 36 has a cylindrical upper portion and a round bar shape at the lower portion, and a skirt portion 36a is formed at the boundary portion thereof, and a pair of upper and lower communication holes 36b and 36c are provided in the upper portion. Further, at the lower portion of the skirt portion 36a, an engaging step portion 36d protruding toward the outer peripheral side is provided.

The substantially cylindrical housing 31 in which the upper and lower pistons 33 and 36 reciprocate up and down inside is fitted at the upper end thereof with the fitting recess 35b of the pump mounting body 35, and the flange portion 31a is interposed via the seal ring 32. It is fixed by being sandwiched between the pump mounting body 35 and the small diameter opening 4d from above and below. A valve seat 31d is provided on the gradually reduced diameter inner surface of the lower portion of the housing 31, and a ball valve 39, which is a check valve, is arranged on the valve seat 31d. The housing 31 is provided with a ventilation hole 31e, and an opening at the lower end of the tubular portion following the valve seat 31d is an introduction port 31c. Further, in the vicinity of the ball valve 39, a tubular stopper 40 having a locking portion 40a having an annular shape and a lower end portion having a collar-shaped diameter is arranged. The inner diameter of the tubular stopper 40 has a size sufficient for the round bar-shaped portion of the lower piston 36 to enter.

A coil spring 37 is arranged between the locking portion 40a of the tubular stopper 40 and the engaging step portion 36d of the lower piston 36 to urge the lower piston 36 upward while the tubular stopper 40. Is urging downwards. Further, a coil spring 41 is arranged between the step portion 40b formed on the inner peripheral surface of the upper end of the tubular stopper 40 and the ball valve 39, and the ball valve 39 is elastically urged downward to cause the tubular stopper 40. 40 is being urged upward. The elastic force of the coil spring 41 is set to be weaker than the elastic force of the coil spring 37, and the tubular stopper 40 cannot be moved upward, while the pressure in the housing 31 is in the inner liquid storage chamber A. The ball valve 39 is set to be in close contact with the valve seat 31d so that the closed state can be maintained until the pressure becomes smaller than a predetermined value.

A double annular seal valve 38 connected at the lower part is slidably arranged between the upper outer peripheral surface of the lower piston 36 and the inner peripheral surface of the housing 31. The seal valve 38 has a large number of ridges formed at intervals on the entire inner peripheral surface of the inner ring 38a, and appropriately applies a frictional force to the outer peripheral surface between the pair of communication holes 36b and 36c of the lower piston 36. On the other hand, the outer ring 38b is in sliding contact with the inner peripheral surface of the housing 31 via an appropriate frictional force on the outer peripheral surfaces of the upper and lower ends of the outer ring 38b. A large number of concave grooves exist over the entire circumference between the protrusions of the seal valve 38, which are sliding contact surfaces with the lower piston 36, and these concave grooves communicate the upper and lower spaces.

In the seal valve 38, when the upper and lower pistons 33 and 36 shown in FIG. 2 are in the uppermost position in the standby state, the lower end of the inner ring 38a is in close contact with the skirt portion 36a of the lower piston 36, and the upper end of the outer ring 38b is attached to the pump. It is in close contact with the lower end of the mounting cylinder 35c of the body 35, and the space inside the housing 31 and the space inside the upper and lower pistons 33 and 36 are blocked. On the other hand, at the end of discharging when the upper and lower pistons 33 and 36 shown in FIG. 4 are at the lowest positions, the lower end of the outer ring 38b of the seal valve 38 is in close contact with the stepped portion 31b of the housing 31, and the upper end of the inner ring 38a is. The space inside the housing 31 and the space inside the upper and lower pistons 33 and 36 are in close contact with each other in close contact with the stepped portion 33b of the upper piston 33.

Subsequently, the discharge operation of the above-described embodiment will be described, but since the discharge operation from the discharge port 24a is the same as that of the first embodiment described above, the description thereof will be omitted, and only the discharge operation of the pump 30 will be described. .. In a standby state (see FIG. 2) in which a predetermined amount of liquid (not shown) is stored in the inner liquid storage chamber A, when the upper cap 26 is removed and the drive head 34 is pushed down, the upper and lower pistons 33 and 36 also appear. The skirt portion 36a of the lower piston 36 descends against the elastic force of the coil spring 37, and separates from the lower end of the inner ring 38a of the seal valve 38. The space is in a communicating state through the communication hole 36b and the concave groove and the communication hole 36c. Then, the pressure in the space below the skirt portion 36a in the housing 31 increases, and this pressure causes the liquid in the space below the skirt portion 36a to pass through the communication hole 36c and the communication hole from the concave groove of the seal valve 38. It begins to move into the lower piston 36 through 36b.

As the drive head 34 descends, the step portion 33b of the upper piston 33 and the upper end of the inner ring 38a of the seal valve 38 come into close contact with each other, and the seal valve 38 descends together with the upper and lower pistons 33 and 36 to form a skirt in the housing 31. When the pressure in the space below the portion 36a becomes higher, the liquid in the upper and lower pistons 33 and 36 begins to be discharged from the discharge port 34b (see FIG. 3). Further, when the lower end of the outer ring 38b of the seal valve 38 is brought into close contact with the stepped portion 31c of the housing 31 by further pushing down the drive head 34, the lower end of the skirt portion 36a is locked to the upper end of the tubular stopper 40. This prevents the lower piston 36 from descending and the lower piston 36 reaches the lowest position (see FIG. 4). In this state, the pressure on the liquid in the housing 31 becomes maximum, and the liquid discharge operation from the discharge port 34b ends. Then, the liquid remains in the discharge port 34b, and depending on the viscosity of the liquid, it may be in a state of protruding from the discharge port 34b due to surface tension.

Here, when the pushing down force applied to the drive head 34 is released, the upper and lower pistons 33 and 36 move upward due to the elastic force of the coil spring 37, so that the volume inside the housing 31 increases and the inner liquid storage chamber A negative pressure is applied to A, and the liquid in each of the upper and lower pistons 33 and 36 is drawn into the housing 31 through the communication hole 36b and the concave groove and the communication hole 36c, and the liquid remaining in the discharge port 34b is drawn. It is pulled into the upper and lower pistons 33 and 36 (see FIG. 5). This prevents dripping.

At this time, since the ball valve 39 is in close contact with the valve seat 31d by the elastic force of the coil spring 41 and maintains a closed state, the liquid in the inner liquid storage chamber A stays in the housing 31 even if the pressure in the housing 31 drops. The negative pressure state in the housing 31 is maintained, and the liquid in the upper and lower pistons 33 and 36 described above is drawn into the housing 31 through the communication hole 36b and the concave groove and the communication hole 36c. The suction operation and the suction operation of drawing the liquid remaining in the discharge port 34a into the upper and lower pistons 33 and 36 are surely performed. Further, since the liquid is drawn from the pair of upper and lower communication holes 36b and 36c, this suction operation is performed more quickly than in the case of one communication hole.

When the upper and lower pistons 33 and 36 rise and the lower end of the inner ring 38a of the seal valve 38 comes into contact with the skirt portion 36a, the inside of the housing 31 and the inside of the upper and lower pistons 33 and 36 are shut off. The suction operation is stopped, and the seal valve 38 rises together with the upper and lower pistons 33 and 36, respectively. Further, when the upper and lower pistons 33 and 36 rise, the pressure in the housing 31 becomes smaller, and when the pressure becomes lower than the predetermined pressure, the ball valve 39 is opened against the elastic force of the coil spring 41 and the housing is opened. The liquid in the inner liquid storage chamber A flows into the 31. When the pressure in the housing 31 exceeds a certain level due to this inflow, the ball valve 39 returns to the closed state again by the elastic force of the spring 41, and the inside of the housing 31 and the inside of the inner liquid storage chamber A are in a non-communication state.

Further, when the upper and lower pistons 33 and 36 rise and the upper end of the outer ring 38b of the seal valve 38 comes into contact with the lower end of the mounting cylinder 35c of the pump mounting body 35, the drive head 34, the upper and lower cylinders 33 and 36 and the seal valve The ascending operation of 38 is stopped, and a standby state (see FIG. 2) is set for preparing for the next operation.

Subsequently, a third embodiment of the present invention will be described with reference to FIG. This embodiment is different from the first and second embodiments described above in that the liquid in the inner liquid storage chamber A is discharged from the discharge port and the liquid in the outer liquid storage chamber B is discharged by a pump. However, the configuration of the pump is the same as that of the second embodiment except for the length of the introduction pipe. Therefore, only the different configurations will be described below, and for the same configurations as those of the first and second embodiments, the corresponding components are given the same reference numerals, and detailed description thereof will be omitted.

Inside the outer liquid storage chamber main body 63 of the container 61, an inner liquid storage chamber main body 62 is integrally provided so as to correspond to and communicate with the small diameter opening 63a provided at the lower end thereof. The inner liquid storage chamber main body 62 has a cylindrical curved surface whose upper end is closed. Further, a bottomed cylindrical discharge cylinder 64 is liquid-tightly fixed to the small-diameter opening 63a, and a discharge port 64a, which is a liquid discharge portion, is opened on the bottom surface thereof. A male screw 63b is formed on the outer peripheral surface of the small diameter opening 63a. The lower cap 65 having an inner cylinder 65a having a female screw 65b screwable with the male screw 63b formed on the inner peripheral surface thereof has the small diameter opening 63a when the female screw 65b is screwed into the male screw 63b. It is fixed to the small diameter opening 63a and removed from the small diameter opening 63a by releasing the screwed state. The lower cap 65 has a convex portion 65c that rushes into the discharge port 64a and closes the discharge port 64a in the screwed state.

The container shoulder portion 66 has a small diameter opening 66d and a male screw portion 66e, but since it is not necessary to fix the inner liquid storage chamber main body 62, the configuration corresponding to the inner peripheral walls 4a and 4f in each of the above-described embodiments. No elements are provided. The upper end of the outer liquid storage chamber main body 63 is liquid-tightly fixed to the lower outer peripheral surface of the outer peripheral wall 66b of the container shoulder portion 66 and the lower surface of the annular convex edge 66c by laser welding. Further, the introduction pipe 67 of the pump 30 is curved and extends along the convex curved surface of the inner liquid storage chamber main body 62 to reach the bottom surface of the outer liquid storage chamber B.

The liquid discharge operation from the discharge port 64a of the inner liquid storage chamber A in the present embodiment is the same as that of the first and second embodiments, and the liquid discharge operation by the pump 30 of the outer liquid storage chamber B is the second. Since it is the same as the embodiment, the description thereof will be omitted.

The present invention is not limited to the above-described embodiments, and for example, the upper pistons 13 and 33 and the lower pistons 16 and 36 may be formed integrally instead of being separate bodies. Further, the communication holes 36b and 36c provided in the lower piston 36 in the second and third embodiments are not limited to a pair, and may be provided, for example, one or three. Further, the configurations of the pumps 10 and 30 are not limited to those described above.

1,51,61 Container 2.42,62 Inner container body 3,63 Outer container body 3a, 63a Small diameter opening 4,66 Container shoulder 4a, 4f Inner peripheral wall 4b, 66b Outer wall 4c, 66c Circular convex edge 4d, 66d Small diameter opening 5,35 Pump mounting body 5b, 35b Fitting recess 5c, 35c Mounting cylinder 10,30 Pump 11,31 Housing 11c, 31c Introducing port 12,32 Seal ring 13,33 Upper piston 14, 34 Drive head 15 Discharge nozzle 16,36 Lower piston 16c Continuous passage 18,37,41 Coil spring 20,21 Vent hole 22,39 Ball valve 23,67 Introductory pipe 24,64 Discharge cylinder 24a, 64a Discharge port 25,65 Lower cap 26 Upper cap 34b Discharge port 38 Seal valve 40 Cylindrical stopper 40a Locking part 40b Step part A Inner liquid storage chamber B Outer liquid storage chamber

Claims (1)

It has an inner liquid storage chamber and an outer liquid storage chamber for storing different liquids, and each liquid storage chamber is provided with a liquid discharge unit on the opposite side in the vertical direction, and one of the liquid discharge units is a pump. A container with two liquid storage chambers , the other of which consists of a discharge port.

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