Pump type discharge container

Abstract

To propose a pump type discharge container that can discharge a content liquid similarly to a conventional manner, and further exhibits excellent recyclability.SOLUTION: A pump type discharge container 1 comprises a container body 2, and a cap 3. The cap 3 comprises: a pressing head 31 which is press-operable toward the container body 2 and provided with a discharge port 31h for discharging a content liquid L to an outside space S3; a deformed wall part 33 which can be elastically deformed through a pressing operation and where a pressure space S2 is formed inside; an introduction port for introducing air A in the outside space S3 into the pressure space S2; a first non-return valve 35 capable of regulating a flow of air A passing through the introduction port; a connection passage 39 through which the air A is fed toward a storage space S1 from the pressure space S2; a feed cylinder 37 for feeding the content liquid L toward the outside space S3 from the storage space S1; and a second non-return valve 38 capable of regulating the content liquid L passing through the discharge port 31h, and the flow of the air A. The deformed wall part 33 is formed from a synthetic resin material.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a pump-type discharge container. [Background technology]

[0002] A known pump-type discharge container is one that includes a cap that is attached to the mouth of the container, a pump that is held at the mouth by the cap and is driven by the back and forth movement of a stem, and a head that is connected to the stem; the liquid contents in the container are discharged from the discharge port of the head by moving the head toward the cap (see, for example, Patent Document 1).

[0003] As shown in Patent Document 1, a coil spring is provided inside such a pump-type discharge container to return the head, which has been moved toward the cap, to its initial position. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-31950 Summary of the Invention [Problem to be solved by the invention]

[0005] However, although most of the components of such pump-type dispensing containers are made of synthetic resin, the coil spring is made of metal. Therefore, when disposing of the container after use, it cannot be recycled as a resin product in its current state. Furthermore, in general, in this type of pump-type dispensing container, the components are firmly fixed to each other, for example, by fitting, to prevent them from coming apart during normal use. Therefore, it takes time and effort to disassemble the pump-type dispensing container and separate the coil spring from the other components.

[0006] The present invention aims to solve these problems and to propose a pump-type dispensing container that can dispense the liquid content in the same way as conventional containers and that is also highly recyclable. [Means for solving the problem]

[0007] The present invention provides a container body having a main body portion in which a storage space for storing content liquid is formed, and a mouth portion provided at one end of the main body portion, and a cap attached to the mouth portion, wherein the cap comprises a pressing head that can be pressed toward the container body and is provided with a discharge port for discharging the content liquid into an external space, a deformable wall portion that can be elastically deformed by pressing the pressing head and has a pressure space formed therein, an inlet port that connects the external space with the pressure space and introduces air from the external space into the pressure space, and a cap that can regulate the flow of the air passing through the inlet port and allows the air to flow from the external space into the pressure space. on the other hand, the pump-type discharge container has a first check valve that blocks the outflow of the air from the pressure space to the external space, a connection path that connects the pressure space with the storage space and supplies the air from the pressure space to the storage space, a supply tube that connects the storage space with the discharge port and supplies the content liquid from the storage space to the external space, and a second check valve that is capable of regulating the flow of the content liquid and the air that passes through the discharge port and allows the content liquid to flow out from the storage space to the external space while blocking the inflow of the air from the external space to the storage space, and the deformable wall portion is formed from a synthetic resin material. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a pump-type dispensing container that can dispense the liquid content in the same manner as conventional containers and that is also highly recyclable. [Brief explanation of the drawings]

[0009] [Figure 1]FIG. 1 is a cross-sectional side view showing a state before the start of use of one embodiment of a pump-type discharge container according to the present invention. [Figure 2] FIG. 2 is an enlarged cross-sectional view of a portion of the pump-type discharge container shown in FIG. [Figure 3A] FIG. 3A is a diagram for explaining a connection path of the pump-type dispenser shown in FIG. 1, and is an enlarged cross-sectional view of part V showing a state in which the connection path is sealed. [Figure 3B] 3B is a diagram for explaining the connection path of the pump-type dispenser shown in FIG. 1, and is an enlarged cross-sectional view of part V showing the state in which the connection path is unsealed. [Figure 4] FIG. 4 is a cross-sectional view illustrating the pump type discharge container shown in FIG. 1 in a state where it is pressed. [Figure 5] FIG. 5 is a cross-sectional view illustrating the pump type discharge container shown in FIG. 1 in a state where the pressing operation is released. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the description, the same or corresponding elements will be designated by the same reference numerals, and duplicate explanations will be omitted. For convenience of explanation, the terms "upper" and "lower" will be used to indicate the upper and lower sides in the vertical direction, respectively, based on the upright position of the pump-type discharge container. In addition, the axis of the opening (described below) of the pump-type discharge container will be referred to as "axis O."

[0011] The configuration of a pump type discharge container according to this embodiment will be described with reference to Figs. 1 and 2. Fig. 1 is a cross-sectional side view showing a state before use of one embodiment of a pump type discharge container according to the present invention. Fig. 2 is a cross-sectional view showing an enlarged portion of the pump type discharge container shown in Fig. 1. In this embodiment, a pump type discharge container 1 containing disinfectant alcohol as the liquid content L will be described as an example. However, the liquid content is not limited to disinfectant alcohol, and various liquids may be used. The pump type discharge container 1 is used by being placed on a flat surface such as a dining table, kitchen counter, or other flat surface such as a sink.

[0012] 1 includes a container body 2, a cap 3 having a pressing head 31 with a discharge port 31h, and a stopper 4. The pump type discharge container 1 is a so-called hand-wrap type pump type discharge container in which the discharged object, such as a hand or a cloth, can directly receive the liquid content L from the discharge port 31h by pressing the pressing head 31 with the discharged object. In this embodiment, the pressing head 31 is pressed in a direction along the axis O toward the container body 2.

[0013] The container body 2 includes a bottom 21, a body 22, and a shoulder 23 as a main body portion, arranged in this order from the bottom, and a mouth 24. In this embodiment, the bottom 21, body 22, shoulder 23, and mouth 24 are configured as a single part. The bottom 21 has, for example, an elliptical shape. The body 22 is located between the bottom 21 and the shoulder 23 and contains the content liquid L. A storage space S1 for containing the content liquid L is formed inside the body 22. In this embodiment, the body 22 gradually expands in diameter from the bottom 21 toward the shoulder 23, and then gradually contracts in diameter. The shoulder 23 extends horizontally from the upper end of the body 22 toward the axis O. The mouth 24 is provided at the inner end of the shoulder 23 (one end of the main body portion) and opens upward. The mouth 24 has a cylindrical shape. The outer peripheral surface of the mouth portion 24 is provided with a male thread 24t for attaching the cap 3 thereto.

[0014] As shown enlarged in FIG. 2, the cap 3 is attached to the mouth portion 24. The cap 3 includes an attachment portion 32, a deformed wall portion 33, a top wall portion 34, a first check valve 35, an inner plug 36, a feed tube 37, a second check valve 38, and the pressing head 31. The attachment portion 32 has an attachment opening portion 32a, a flange portion 32b, and a connecting wall portion 32c. The attachment opening portion 32a has a cylindrical shape corresponding to the mouth portion 24. The inner diameter of the attachment opening portion 32a is larger than the outer diameter of the mouth portion 24. The inner peripheral surface of the attachment opening portion 32a is provided with a female thread 32t that threadably engages with the male thread 24t. The flange portion 32b extends horizontally from the upper end of the attachment opening portion 32a toward the axis O. The connecting wall portion 32c stands upright from the inner end of the flange portion 32b. As exemplified in this embodiment, the mounting portion 32 may have a region where the female thread 32t is not provided in the portion that connects with the deformed wall portion 33.

[0015] The deforming wall portion 33 can be elastically deformed by being pressed. Specifically, the deforming wall portion 33 can be elastically deformed by the pressing operation of the pressing head 31. The deforming wall portion 33 is formed in a bellows shape that can expand and contract along the axis of the deforming wall portion 33 (here, the axis coincides with the axis O). The deforming wall portion 33 is provided between the mounting portion 32 and the top wall portion 34, and is connected to the upper end of the connecting wall portion 32c and the lower end of the top wall portion 34. A pressure space S2 is formed inside the deforming wall portion 33.

[0016] An inlet 34h is provided in the top wall 34. Specifically, the top wall 34 has a stepped outer wall 34a connected to the upper end of the deformable wall 33 around the entire circumference, and a cylindrical wall 34b located inside the outer wall 34a. The inlet 34h is provided at the upper end of the outer wall 34a. The inlet 34h opens upward and connects the external space S3 to the pressure space S2. In this embodiment, multiple inlets 34h are provided at intervals around the circumferential direction of the outer wall 34a. The inlet 34h is a portion for introducing air A from the external space S3 into the pressure space S2. The outer wall 34a and the cylindrical wall 34b are connected to each other at their upper ends. In this embodiment, the mounting portion 32, the deformable wall 33, and the top wall 34 are formed as a single part.

[0017] The first check valve 35 is provided inside the top wall portion 34. The first check valve 35 is capable of restricting the flow of air A passing through the inlet 34h. Specifically, the first check valve 35 allows the flow of air A from the external space S3 to the pressure space S2, while blocking the flow of air A from the pressure space S2 to the external space S3. In this embodiment, the first check valve 35 has a cylindrical connecting wall 35a and a flange 35b connected to the lower end of the connecting wall 35a.

[0018] The connecting wall 35a is inserted between the outer wall 34a and the cylindrical wall 34b and is fitted and held by the cylindrical wall 34b. The flange 35b extends from the lower end of the connecting wall 35a so as to cover the pressure space S2. The tip of the flange 35b contacts (seats on) the lower surface of the middle section of the inner surface of the outer wall 34a. The flange 35b is elastically deformable. The tip of the flange 35b can be separated from the inner surface of the outer wall 34a by elastic deformation. In this way, the flange 35b comes into contact with and separates from the inner surface of the outer wall 34a, causing the first check valve 35 to open and close the inlet 34h.

[0019] The inside plug 36 separates the pressure space S2 from the storage space S1. In this embodiment, the inside plug 36 is disposed inside the mounting portion 32. The inside plug 36 has a plate-shaped portion 36a that covers the mouth portion 24 and a guide tube 36b provided on the plate-shaped portion 36a. The plate-shaped portion 36a has a disk shape that corresponds to the opening of the mouth portion 24. A cylindrical wall is provided on the underside of the plate-shaped portion 36a, and a ring-shaped gasket 36c is inserted and held in this cylindrical wall. An opening is formed in the approximate center of the plate-shaped portion 36a to allow the feeding tube 37 to pass through. The guide tube 36b is provided in this opening of the plate-shaped portion 36a. The guide tube 36b supports the feeding tube 37 and extends between the pressure space S2 and the storage space S1. In this embodiment, the guide tube 36b has a cylindrical shape that extends along the axis O.

[0020] The feeding tube 37 is a member for feeding the content liquid L. The feeding tube 37 connects the storage space S1 with the discharge port 31h, and feeds the content liquid L from the storage space S1 toward the external space S3. The content liquid L fed by the feeding tube 37 is discharged from the external space S3 via the discharge port 31h. The feeding tube 37 has a holding tube 37a and a tube 37b.

[0021] The retaining tube 37a extends along the axis O in the pressure space S2. The retaining tube 37a has a lower tube portion 37c and an upper tube portion 37d. The lower tube portion 37c is disposed inside the deformable wall portion 33 and supported by the guide tube 36b. The outer diameter of the lower tube portion 37c is equal to the inner diameter of the guide tube 36b. The upper tube portion 37d extends through the inside of the top wall portion 34 to the discharge port 31h. The upper tube portion 37d expands in diameter at the connection portion with the lower tube portion 37c toward the discharge port 31h and is inserted into the cylindrical wall 34b and held by the cylindrical wall 34b. A stopper 37e for restricting movement of the second check valve 38 is provided in the expanded diameter portion of the upper tube portion 37d. A detailed description of the stopper 37e will be given later.

[0022] The upper portion of the tube 37b is held by the lower tube portion 37c of the holding tube 37a. The tube 37b extends downward toward the accommodation space S1. As shown in Fig. 1, the lower end of the tube 37b extends to the vicinity of the bottom portion 21. Alternatively, the lower end of the tube 37b may contact the bottom portion 21.

[0023] The pump-type discharge container 1 further includes a connection path 39 for supplying air A from the pressure space S2 to the storage space S1. The connection path 39 connects the pressure space S2 and the storage space S1, thereby enabling air A to be supplied from the pressure space S2 to the storage space S1. In this embodiment, the connection path 39 is formed by a gap between the feed tube 37 and the guide tube 36b. The feed tube 37 and the guide tube 36b will be described in detail with reference to FIGS. 3A and 3B. FIG. 3A is a diagram for explaining the connection path of the pump-type discharger shown in FIG. 1, and is an enlarged cross-sectional view of part V showing a state in which the connection path is sealed. FIG. 3B is a diagram for explaining the connection path of the pump-type discharger shown in FIG. 1, and is an enlarged cross-sectional view of part V showing a state in which the connection path is unsealed.

[0024] Either the feeding tube 37 or the guide tube 36b (here, feeding tube 37) is formed with a first groove portion 37g that faces the other of the feeding tube 37 or the guide tube 36b (here, guide tube 36b) and extends along the pressing direction, and a locking portion 37f that is provided at the end of first groove portion 37g. In this embodiment, a plurality of first groove portions 37g are formed at intervals in the circumferential direction of feeding tube 37. Locking portion 37f is provided around the entire circumference of feeding tube 37.

[0025] The other of the feeding tube 37 and the guide tube 36b (here, the guide tube 36b) is provided with a second groove 36g, which extends in the opposite direction to the first groove 37g along the pressing direction and faces the first groove 37g when viewed from the pressing direction, and a protrusion 36d provided at the end of the second groove 36g. In this embodiment, a plurality of second grooves 36g are formed at intervals in the circumferential direction of the guide tube 36b, corresponding to the plurality of first grooves 37g. The protrusion 36d is provided around the entire circumference of the guide tube 36b and separates the first groove 37g from the second groove 36g at a position facing the locking portion 37f. On the other hand, when the protrusion 36d is positioned above the locking portion 37f, i.e., when the protrusion 36d faces the first groove 37g, the first groove 37g and the second groove 36g communicate with each other. In this manner, the first groove portion 37g and the second groove portion 36g communicate with each other, thereby forming a connection path 39.

[0026] As shown in FIG. 2, the second check valve 38 is provided inside the feeding tube 37. The second check valve 38 can regulate the flow of the liquid L and air A passing through the discharge port 31h. Specifically, the second check valve 38 allows the liquid L to flow from the storage space S1 to the external space S3, while blocking the flow of air A from the external space S3 to the storage space S1. In this embodiment, the second check valve 38 is disposed in the expanded diameter portion of the upper cylindrical portion 37d of the holding tube 37a. The second check valve 38 is formed of a spherical plug member. The diameter of the second check valve 38 is larger than the minimum inner diameter of the upper cylindrical portion 37d and smaller than the maximum inner diameter of the upper cylindrical portion 37d.

[0027] When the second check valve 38 is in contact with the upper cylindrical portion 37d, the retainer 37e protrudes in the form of a thin plate from the inner circumferential surface of the upper cylindrical portion 37d, leaving a gap between the second check valve 38 and the retainer 37e so as to follow the spherical surface of the second check valve 38. In this embodiment, multiple retainers 37e are provided at intervals in the circumferential direction of the upper cylindrical portion 37d. Note that only one retainer 37e may be provided on the expanded diameter portion of the upper cylindrical portion 37d.

[0028] The pressing head 31 can be pressed toward the container body 2. The pressing head 31 is provided with a discharge port 31h for discharging the content liquid L into the external space S3. The pressing head 31 has a dish portion 31a where the discharge port 31h opens, a lid portion 31b for covering the dish portion 31a, and an outer peripheral wall 31c extending from the dish portion 31a on the side opposite to the lid portion 31b.

[0029] The dish portion 31a is a member to be pressed. The dish portion 31a is circular or elliptical (circular in this case) in top view, and in cross section, it has a dish-like shape with a plate-like bottom curved downward. The discharge port 31h is formed by a hole that penetrates from the top surface to the bottom surface of the dish portion 31a at approximately the center of the dish portion 31a in top view. The inner diameter of the discharge port 31h is smaller than the inner diameter of any part of the feeding tube 37, for example. A cylindrical connecting wall 31d is provided on the bottom surface of the dish portion 31a, surrounding the discharge port 31h. An upper tube portion 37d of the feeding tube 37 is inserted into the connecting wall 31d, and the upper tube portion 37d is held in place by the connecting wall 31d. A hinge portion 31e connected to the lid portion 31b is provided on one end of the dish portion 31a. The hinge portion 31e is bendable so as to move the lid portion 31b toward or away from the dish portion 31a.

[0030] The lid portion 31b is movable between a closed position in which it covers the dish portion 31a and an open position in which it moves away from the dish portion 31a. In this embodiment, the lid portion 31b is held movable between the closed position and the open position by a hinge portion 31e provided at one end of the dish portion 31a. The lid portion 31b is plate-shaped and has a circular or elliptical shape (circular in this case) that is slightly larger than the dish portion 31a in a top view. The lid portion 31b has a protrusion 31p that protrudes toward the inside of the discharge port 31h on the surface facing the dish portion 31a in the closed position. The outer diameter of the protrusion 31p is approximately the same as the inner diameter of the discharge port 31h. The protrusion 31p closes the discharge port 31h in the closed position. The lid portion 31b further has a protruding locking piece 31q that locks with the other end of the dish portion 31a in the closed position.

[0031] The outer peripheral wall 31c is provided on the underside of the dish portion 31a. The outer peripheral wall 31c is cylindrical and extends below the top wall portion 34. The outer diameter of the outer peripheral wall 31c is larger than that of the connecting wall portion 32c and smaller than that of the mounting opening portion 32a. The outer peripheral wall 31c surrounds the top wall portion 34 and the upper cylinder portion 37d above the deforming wall portion 33, protecting the top wall portion 34 and the upper cylinder portion 37d.

[0032] The stopper 4 is a member for preventing the pressing head 31 from being pressed when the pump-type discharge container 1 is not in use (for example, during transportation, etc.). The stopper 4 has an arc-shaped restriction portion 41 that surrounds part of the connecting wall portion 32c and part of the deformable wall portion 33 in a top view, and a grip portion 42 that protrudes outward from the restriction portion 41 (on the opposite side to the connecting wall portion 32c and the deformable wall portion 33). The restriction portion 41 prevents the pressing head 31 from being pressed while being sandwiched between the outer peripheral wall 31c of the pressing head 31 and the flange portion 32b of the attachment portion 32. The grip portion 42 is gripped to remove the stopper 4 when pressing operation by the pressing head 31 is permitted (for example, when starting use). By gripping the gripping portion 42 and pulling it outward, the restricting portion 41 is removed from between the outer peripheral wall 31c and the flange portion 32b, and the pressing operation of the pressing head 31 becomes possible.

[0033] The container body 2, cap 3, and stopper 4 are each made of a synthetic resin material. The components of the cap 3 include the mounting portion 32, deformable wall portion 33, top wall portion 34, first check valve 35, inner plug 36, feed tube 37, second check valve 38, and pressing head 31. Specific examples of synthetic resin materials include elastic soft synthetic resins (e.g., polyethylene (LDPE, HDPE, foamed PE)) and hard synthetic resins (e.g., polypropylene (PP), polybutylene terephthalate (PBT), polyacetal (POM), polyketone (POK) resin, etc.). The pump-type discharge container 1 of this embodiment does not contain metal as a material for forming the container body 2, cap 3, and stopper 4.

[0034] The operation of the pump type discharge container 1 will be described with reference to Figures 3A to 5. Figure 4 is a cross-sectional view illustrating the state in which the pump type discharge container shown in Figure 1 has been pressed. Figure 5 is a cross-sectional view illustrating the state in which the pump type discharge container shown in Figure 1 has been released from the pressing operation.

[0035] 3A, before the pump-type discharge container 1 is used, the protrusion 36d is engaged with the locking portion 37f. This separates the first groove 37g and the second groove 36g at the position where the protrusion 36d faces the locking portion 37f. That is, the connection path 39 is fixed in a sealed state by the locking portion 37f and the protrusion 36d.

[0036] As shown in Figure 4, when starting to use the pump-type discharge container 1, the lid portion 31b is opened before the pressing head 31 is pressed. In this state, when the dish portion 31a of the pressing head 31 is pressed downward along the axis O, the deformable wall portion 33 elastically deforms and contracts downward, reducing the volume of the pressure space S2. At this time, the tip of the flange 35b of the first check valve 35 is seated on the inner surface of the outer wall 34a. In this way, the first check valve 35 regulates the flow of air A through the inlet 34h, blocking the outflow of air A from the pressure space S2 to the external space S3 and pressurizing the air A in the pressure space S2.

[0037] Furthermore, by pressing the pressing head 31, the feeding tube 37 connected to the pressing head 31 moves downward. As a result, the feeding tube 37 moves relative to the guide tube 36b in the pressing direction (downward along the axis O) so that the protrusion 36d passes over the locking portion 37f. Then, the protrusion 36d is positioned above the locking portion 37f, i.e., the protrusion 36d faces the first groove 37g, and the first groove 37g and the second groove 36g communicate with each other. In this way, the sealing by the locking portion 37f and the protrusion 36d is released, and the connecting passage 39 is formed. As a result, the pressurized air A in the pressure space S2 is supplied to the accommodation space S1 through the connecting passage 39.

[0038] Then, the inflow of pressurized air A into the storage space S1 forces the liquid L in the storage space S1 into the feed tube 37. This liquid L passes through the gap between the inner surface of the upper tube portion 37d and the second check valve 38 and rises toward the discharge port 31h. Note that the second check valve 38 rises along with the liquid L up to a position where it contacts the retaining member 37e, but is restricted by the retaining member 37e and is prevented from moving too far upward. As a result, the liquid L is discharged from the discharge port 31h into the external space S3, and the liquid L can be received by a discharged object (not shown).

[0039] As shown in Figure 5, after using the pump-type discharge container 1, when the pressing operation is released, the elastically deformed and shrunk deformable wall portion 33 expands to its original height due to the biasing force. As a result, the volume of the pressure space S2, which had been reduced, returns to its original size, and the pressure space S2 becomes a reduced-pressure atmosphere. As a result, air A from the high-pressure external space S3 is introduced into the pressure space S2 through the inlet port 34h while moving the tip of the flange 35b of the first check valve 35 away from the inner surface of the outer wall 34a. In addition, the second check valve 38 is seated on the upper cylindrical portion 37d due to its own weight. In this way, the second check valve 38 restricts the flow of air A through the discharge port 31h, thereby blocking the inflow of air A from the external space S3 into the storage space S1.

[0040] Furthermore, when the pressing operation of the pressing head 31 is released after the pump-type discharge container 1 is started, the biasing force of the deformable wall portion 33 moves the supply tube 37 upward. However, after the protrusion 36d overcomes the locking portion 37f due to the pressing operation at the start of use (i.e., after the connection passage 39 is unsealed), the supply tube 37 does not move to the position before the start of use shown in FIG. 3A. Instead, the locking portion 37f stops below the protrusion 36d as shown in FIG. 3B. At this time, the lower surface of the protrusion 36d and the upper surface of the locking portion 37f are in contact with each other. As a result, the communication between the first groove portion 37g and the second groove portion 36g is blocked by the protrusion 36d and the locking portion 37f, and the connection passage 39 is unsealed. As a result, the pump-type discharge container 1 is placed on a dining table, kitchen counter, bathroom sink, etc., in a ready state where the connection passage 39 is blocked and the pump-type discharge container 1 can be easily pressed when used.

[0041] The effects of the pump-type discharge container 1 will now be described. In the pump-type discharge container 1, the deforming wall portion 33 is elastically deformed by the pressing operation of the pressing head 31, thereby reducing the volume of the pressure space S2 and allowing air A to flow out of the pressure space S2. Because the first check valve 35 prevents this air A from flowing out through the inlet 34h, it flows into the pressure space S2 via the connecting path 39. This forces the liquid L in the pressure space S2 out of the pressure space S2, and the liquid L is discharged from the discharge port 31h via the feed tube 37. Meanwhile, when the pressing operation of the pressing head 31 is released, the elastically deformed deforming wall portion 33 returns to its original state, increasing the volume of the pressure space S2 and creating a reduced-pressure atmosphere in the pressure space S2. As a result, air A from the external space S3 flows into the pressure space S2 via the inlet 34h, and the pressure space S2 returns to its initial state. The deforming wall portion 33, which is capable of undergoing this series of elastic deformations, is made of a synthetic resin material. Therefore, it is possible to dispense the liquid L in the same way as before without using a metal coil spring. After use, there is no need to separate the metal parts, as is done with conventional pump-type dispensing containers, and the container can be reused as a resin product as is, making it highly recyclable.

[0042] The cap 3 further includes an inner plug 36 separating the pressure space S2 from the storage space S1. The inner plug 36 includes a plate-shaped portion 36a that covers the opening 24 and a guide tube 36b that is attached to the plate-shaped portion 36a, supports the feed tube 37, and extends between the pressure space S2 and the storage space S1. The connection path 39 is formed by the gap between the feed tube 37 and the guide tube 36b. With this configuration, the pressure space S2 is defined as a space separate from the storage space S1 by the deformable wall portion 33 and the plate-shaped portion 36a, making it easier to control the air A in the pressure space S2 by pressing the pressing head 31. Additionally, the feed tube 37 is supported by the guide tube 36b, making it easier to stabilize the position of the feed tube 37 in the storage space S1. These features allow the content liquid L to be discharged more smoothly by pressing the cap 33.

[0043] Either the feeding tube 37 or the guide tube 36b is formed with a first groove portion 37g that faces the other of the feeding tube 37 or the guide tube 36b and extends along the pressing direction in which the pressing head 31 is pressed, and a locking portion 37f that is provided at the end of the first groove portion 37g. Either the feeding tube 37 or the guide tube 36b is formed with a second groove portion 36g that faces the first groove portion 37g when viewed from the pressing direction and extends in the opposite direction to the first groove portion 37g along the pressing direction, and a protrusion 36d that is provided at the end of the second groove portion 36g. Before use, the connection path 39 is sealed by the locking portion 37f and the protrusion 36d, while when the pressing head 31 is pressed, the first groove portion 37g and the second groove portion 36g are connected to each other, forming the connection path 39. According to this configuration, before use, the connection between the external space S3 and the storage space S1 is suppressed, and deterioration of the content liquid L in the storage space S1 due to contact with the air A in the external space S3 can be reduced. Then, when use begins, the pressing head 31 is pressed, causing the protrusion 36d to climb over the locking portion 37f, releasing the seal and forming the connection path 39. This allows the content liquid L to be discharged by pressing.

[0044] Furthermore, even after the seal is released, when the pressing head 31 is not being pressed, the supply tube 37 is pushed upward by the biasing force of the deformable wall portion 33 as it tries to restore its original shape, so the lower surface of the protrusion 36d and the upper surface of the locking portion 37f are in contact with each other. Therefore, the first groove portion 37g and the second groove portion 36g are not in communication with each other, which prevents air A from entering the storage space S1 when the container is not in use. This reduces deterioration of the content liquid L even after use.

[0045] The pressing head 31 further includes a dish 31a in which the discharge port 31h is open, and a lid 31b that can be displaced between a closed position that covers the dish 31a and an open position that moves away from the dish 31a, and the lid 31b is provided with a protrusion 31p that blocks the discharge port 31h in the closed position. With this configuration, when not in use (e.g., during storage, etc.), the dish 31a is covered by placing the lid 31b in the closed position, which prevents dust and the like from adhering to the dish 31a, ensuring hygienic use. In addition, when the lid 31b is in the closed position, the discharge port 31h is blocked by the protrusion 31p, which reduces solidification of the content liquid L at the discharge port 31h.

[0046] Although one embodiment of the present invention has been described above, the present invention is not limited to this specific embodiment, and various modifications and variations are possible within the spirit and scope of the present invention as set forth in the claims. For example, although a hand-wrap type pump-type dispensing container 1 has been described as an example in this embodiment, the present invention is applicable to various pump-type dispensing containers. Furthermore, the effects of this embodiment are merely examples of the effects that can be obtained from the present invention. In other words, the present invention may also provide additional effects. [Explanation of symbols]

[0047] 1: Pump-type discharge container 2: Container body 3: Cap 4: Stopper 21: Bottom 22: Torso 23:Shoulder 24: Mouth 24t: Male thread 31: Pressing head 31a: Dish part 31b: Lid part 31c: Outer wall 31d: Connecting wall 31e: Hinge part 31h:Discharge port 31p:Protrusion 31q: Locking piece 32: Mounting part 32a: Attachment opening 32b:Tsubabe 32c: Connecting wall 32t: Female thread 33: Deformed wall 34: Ceiling wall 34a: Exterior wall 34b: Cylindrical wall 34h: Inlet 35:First check valve 35a: Connecting wall 35b: Flange 36: Inner stopper 36a: Plate-shaped part 36b: Guide tube 36c: Packing 36d: Protrusion 36g:Second groove part 37: Feeding tube 37a: Holding cylinder 37b: Tube 37c: Lower cylinder part 37d: Upper cylinder part 37e: Prevents slipping out 37f: Locking part 37g: First groove 38:Second check valve 39: Connection road 41: Regulation Department 42: Grip part A: Air L: Content liquid O: Axial center S1: Containment space S2: Pressure space S3: External space

Claims

1. a container body having a main body portion in which a storage space for storing the content liquid is formed and a mouth portion provided at one end of the main body portion; a cap attached to the mouth portion, The cap is a pressing head that can be pressed toward the container body and has a discharge port for discharging the content liquid into an external space; a deformable wall portion that is elastically deformable by the pressing operation of the pressing head and has a pressure space formed therein; an inlet that connects the external space with the pressure space and introduces air from the external space into the pressure space; a first check valve that is capable of regulating the flow of the air passing through the inlet, and that allows the air to flow from the external space to the pressure space while blocking the air from flowing out from the pressure space to the external space; a connection path that connects the pressure space and the storage space and supplies the air from the pressure space to the storage space; a supply tube that connects the storage space with the discharge port and supplies the content liquid from the storage space to the external space; a second check valve that is capable of regulating the flow of the content liquid and the air passing through the discharge port, and that allows the content liquid to flow out from the storage space to the external space while blocking the inflow of the air from the external space into the storage space, The deformable wall portion is formed of a synthetic resin material.

2. The cap further includes an inner plug separating the pressure space from the storage space, The inside plug is a plate-shaped portion covering the mouth portion; a guide tube that is provided on the plate-shaped portion, supports the feeding tube, and extends between the pressure space and the accommodation space, The pump-type discharge container according to claim 1 , wherein the connecting path is formed by a gap between the feeding tube and the guide tube.

3. a first groove portion that faces the other of the feeding tube and the guide tube and extends along a pressing direction in which the pressing head is pressed, and a locking portion that is provided at an end of the first groove portion, a second groove portion extending in an opposite direction to the first groove portion along the pressing direction and facing the first groove portion when viewed from the pressing direction, and a protrusion provided at an end of the second groove portion, 3. The pump-type discharge container according to claim 2, wherein the connection passage is sealed by the locking portion and the protrusion before use, while the first groove portion and the second groove portion are connected to form the connection passage when the pressing head is pressed.

4. the pressing head further includes a dish portion in which the discharge port is opened, and a lid portion that is displaceable between a closed position that covers the dish portion and an open position that moves away from the dish portion, The pump type discharge container according to claim 1 , wherein the lid portion is provided with a protrusion portion that closes the discharge port in the closed position.

Images