Powder dispensing container

Abstract

To provide a powder discharge container which is small and excellent in portability, and can discharge powder with a simple structure.SOLUTION: A powder discharge container 100 includes: a container main body 10 which has a storage space S1: a lid body 22 which is arranged on a mouth part 11: a power suction passage 50 of which other end is communicated with a through hole 22a: a passage part 60 which has a downstream side passage 80 on a discharge port 62 side, an upstream side passage 70 on an inflow port side, and a communication part 91 communicating with the through hole 22a; a pressurized air supply part 30 which has a volume-reducing deformable body 33 which defines an air storage space S3 on the lid body 22, and supplies pressurized air to the passage part 60 by reducing a volume and deforming the volume-reducing deformable body 33; and an opening / closing valve 63 which is arranged on an inflow port 61a and closes the inflow port, and opens when a pressure of an outer side of the passage part 60 is positive. A diameter of a part of the passage part 60 is reduced. When the pressurized air supplied from the pressurized air supply part 30 passes through the passage part 60, a negative pressure is acted on an other end side of the powder suction passage 50 through the communication part 91.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a powder dispensing container that dispenses powder contained in a container body from a dispensing outlet. [Background technology]

[0002] As a container for discharging powder such as cosmetics (e.g., baby powder, foundation, face powder, etc.) and foodstuffs such as seasonings (e.g., salt, pepper, etc.), for example, a powder discharging container disclosed in Patent Document 1 is known. The powder discharging container disclosed in Patent Document 1 is configured so that powder contained in a container body can be discharged from a discharge port by a pump mechanism.

[0003] Also, valve atomizers used for perfume bottles and the like may be used as powder discharge containers. A valve atomizer is a container that has a discharge head connected to an insertion tube that is inserted into the container body, connects one end of a Vernuit tube to the mouth, and compresses and deforms the balloon-shaped part connected to the other end of the Vernuit tube to send air into the Vernuit tube and apply negative pressure to the upper end of the insertion tube to suck in the contents, and sprays the contents from the mouth together with the airflow. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2000-189858 A Summary of the Invention [Problem to be solved by the invention]

[0005] According to the conventional powder discharge container, the powder contained in the container body can be discharged in an appropriate amount by a simple operation such as pressing down the head or reducing the volume of the balloon-shaped portion, and the container body is excellent in operability. However, the powder discharge container disclosed in Patent Document 1 has a problem that the number of parts constituting the mechanism for discharging the powder, such as a pump mechanism, is large, and the assembly labor is increased, so the container cost is also high. In addition, the powder discharge container disclosed in Patent Document 2 has a simple mechanism for discharging the powder, but the balloon-shaped portion protrudes radially outward at the mouth and is bulky, so that the container is poor in portability and has large design restrictions.

[0006] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a powder dispensing container that is small and easy to carry and that can dispense powder with a simple configuration. [Means for solving the problem]

[0007] In order to solve the above problems, the powder dispensing container according to the present invention comprises: a powder suction flow path having one end disposed within the storage space and the other end communicating with the through hole; a flow path section provided on the lid body, having a downstream flow path on the discharge port side and an upstream flow path on the inlet side, and having a communication section between the upstream flow path and the downstream flow path that communicates with the through hole; a pressurized air supply section having a volume-reducing deformable body that defines an air storage space on the lid body that can accommodate a predetermined volume of air, and supplying pressurized air to the flow path section by volume-reducing and deforming the volume-reducing deformable body; and an open / close valve provided at the inlet for closing the inlet and opening when a positive pressure is applied to the outside of the flow path section, the pressurized air supply unit is configured to apply negative pressure to the side of the container body, and the pressurized air supply unit is configured to block the flow of air between the air accommodating space and the outside when the volume-reduced deformable body is reduced in volume, and to allow the flow of air between the air accommodating space and the outside when the volume-reduced deformable body is restored to its original shape, the pressurized air supply unit comprising an operation button that is arranged to be pressed in the axial direction of the container body, a pressurized air pin attached to the operation button, and an air hole that is arranged in the volume-reduced deformable body and into which the pressurized air pin is inserted, and when the operation button is pressed, the pressurized air supply unit moves axially downward to close the air hole, blocking the flow of air between the air accommodating space and the outside and reducing and deforming the volume-reduced deformable body, and when the pressing of the operation button is released, the flow of air between the air accommodating space and the outside is allowed, restoring the volume-reduced deformable body to its original shape.

[0008] In the powder dispensing container according to the present invention, it is preferable that the inlet has a smaller diameter than the upstream flow path.

[0009] In the powder dispensing container according to the present invention, it is preferable that the diameter of the space between the upstream flow path and the downstream flow path is narrowed. Effect of the Invention

[0012] According to the powder discharge container of the present invention, by supplying pressurized air to the flow path provided on the lid by the pressurized air supply unit, negative pressure is applied to the powder suction flow path in the storage space of the container body by the Venturi effect, and powder is sucked from the storage space and discharged from the discharge port of the flow path together with the pressurized air. Therefore, unlike a pump mechanism, powder can be discharged with a simple configuration. In addition, since the air storage space is partitioned by a volume-reducing deformable body on the lid, and the pressurized air is supplied to the flow path by reducing and deforming the volume-reducing deformable body, a bulky balloon-shaped member such as that of a valve atomizer is not required, and the entire container can be configured compactly. Therefore, a powder discharge container that is small and excellent in portability can be provided. [Brief description of the drawings]

[0013] [Figure 1] FIG. 2 is a cross-sectional view of a powder dispensing container according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view for explaining the internal structure of the powder dispensing container of FIG. [Diagram 3] 2A is a partial enlarged view of the powder discharging container in FIG. 1 showing a state in which a volume-reducing deformable body has been deformed, and FIG. 2B is an enlarged view showing a powder flow path and a flow path portion. [Figure 4] 2A and 2B are diagrams for explaining the procedure for using the powder dispensing container of FIG. 1, in which (a) shows the state in which the operation button is pressed from the initial position to the pressed position, and (b) shows the state in which the operation button returns from the pressed position to the initial position. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, an embodiment of a powder dispensing container according to the present invention will be described with reference to the drawings. Fig. 1 is a cross-sectional view of a powder dispensing container 100 according to an embodiment of the present invention. 1, the powder discharge container 100 of this embodiment includes a container body 10 having a storage space S1 for storing powder P (see FIG. 4), a cap body 20 detachably attached to an opening 11 of the container body 10, a pressurized air supply unit 30 provided on the cap body 20, an overcap unit 40 detachably attached to the cap body 20 and covering the pressurized air supply unit 30, a powder suction flow path 50 provided in the storage space S1, and a flow path unit 60 provided on a lid 22 covering the opening 11 so that the flow path direction is approximately perpendicular to that of the powder suction flow path 50. The flow path unit 60 communicates with the powder suction flow path 50 via a through hole 22a. By pressing the operation button 31 provided on the pressurized air supply section 30, pressurized air is passed from the inlet hole 61a (inlet) of the flow path section 60 toward the outlet 62a, and at that time, negative pressure is applied to the powder suction flow path 50 via the through hole 22a, so that the powder P sucked in from the storage space S1 is discharged from the outlet 62a together with the pressurized air.

[0015] Examples of the powder P as the content include cosmetics (e.g., baby powder, foundation, face powder, face wash powder, etc.), food such as seasonings (e.g., salt, pepper, granulated soup stock, wheat flour, potato starch, powdered sugar, food coloring, etc.), medicines (oral medicine, wound medicine, detergent, bleach, etc.), art supplies (silver powder, gold powder, etc.), etc., and the content has a particle size (volume average particle size D 50 ) is not particularly limited as long as it is an aggregate of particles having a particle diameter of about 0.5 μm to 1 mm.

[0016] The configuration of the powder dispensing container 100 is roughly as described above, but the configuration of each part will be specifically described below with reference to Figs. 1 to 3. The direction of the central axis O of the container body 10 is referred to as the axial direction, the direction of the side where the cap body 20 is provided with respect to the container body 10 when the powder dispensing container 100 is arranged in the upright position shown in Fig. 1 is referred to as the "upper" direction, and the direction of the bottom part 12 side of the container body 10 is referred to as the "lower" direction. Of course, "upper" and "lower" indicate relative positional relationships. Fig. 2 is a partial perspective view of the powder dispensing container 100, Fig. 3(a) is a partial cross-sectional view showing the state in which the volume-reducing deformable body 33 has been reduced in volume, and Fig. 3(b) is a partial cross-sectional view for explaining the configuration of the flow path part 60.

[0017] As shown in Fig. 1, the container body 10 is formed in a substantially cylindrical shape and includes a body 13 and a shoulder 14 in addition to the mouth 11 and bottom 12. The bottom 12 and body 13 define the storage space S1, and powder P (see Fig. 4) is stored in the storage space S1 as the contents. The inner diameter of the body 13 is substantially constant, and the mouth 11 is configured to have a smaller diameter than the body 13, and the mouth 11 and body 13 are connected by the shoulder 14. The mouth 11 is open, and a male thread 11a into which the cap body 20 is screwed is provided on the outer circumferential surface of the mouth 11.

[0018] The cap body 20 comprises, from bottom to top in the axial direction, a cylindrical mounting portion 21 that is removably attached to the mouth portion 11, a lid body 22 that forms the top wall of the mounting portion 21 and closes the mouth portion 11, and a retaining portion 23 that is connected to the mounting portion 21 and holds the pressurized air supply portion 30.

[0019] The mounting tube 21 has an inner peripheral surface provided with a female thread 21a that screws into the male thread 11a. The lid 22 has a through hole 22a that penetrates in the thickness direction. An inner insertion tube 22b that protrudes axially downward from the lower surface of the lid 22 is provided, and the outer peripheral surface of the inner insertion tube 22b is in close contact with the inner peripheral surface of the mouth 11. The lower surface of the lid 22 is provided with a suction tube holding tube 22c that extends downward from the periphery of the through hole 22a and holds a suction tube 51 that forms a powder suction flow passage 50 by being pressed into it.

[0020] The holding tube portion 23 has a peripheral wall 23a connected to the mounting tube portion 21 at the outer edge of the lid body 22, and the flow path portion 60 is disposed in an intermediate space S2 surrounded by the lid body 22 and the peripheral wall 23a. The upper end of the peripheral wall 23a forms an engagement portion 23b with which the lower end of a cover portion 35 of the pressurized air supply portion 30 described next is engaged. The intermediate space S2 communicates with an air accommodation space S3 described below.

[0021] The pressurized air supply unit 30 includes the above-mentioned operation button 31, a push-down pin 32 attached to the operation button 31, a volume-reducing deformation body 33 pushed down by the push-down pin 32, a sealing peripheral wall 34 connected to the volume-reducing deformation body 33 and pressed against the peripheral wall 23a of the cap body 20, and a cover portion 35 that covers the components of the pressurized air supply unit 30 other than the operation surface of the operation button 31.

[0022] The operation button 31 is formed in a short cylinder shape with the operation surface as the top wall surface, and a protrusion 31a is provided below the peripheral wall surface, protruding outward in the circumferential direction. The push pin 32 is suspended axially downward from the back surface of the operation button 31. The push pin 32 has a rod-shaped portion 32a in the shape of a long round bar, and a seal portion 32b provided at the tip of the rod-shaped portion 32a. The seal portion 32b has a smaller diameter than the rod-shaped portion 32a, and the diameter between the rod-shaped portion 32a and the seal portion 32b gradually decreases from the rod-shaped portion 32a toward the seal portion 32b. The seal portion 32b also slightly decreases in diameter toward the tip, and the tip is rounded.

[0023] The volume-reducing deformable body 33 defines an air storage space S3 capable of storing a predetermined volume of air on the lid body 22. In this embodiment, the volume-reducing deformable body 33 is formed in a hemispherical (dome-like) shape, and defines the air storage space S3 on the lid body 22 and above the intermediate space S2. The volume-reducing deformable body 33 is deformable and is made of an elastic material such as rubber, silicon, elastomer, etc. that can be restored to its original shape after the volume-reducing deformation. An air hole 33a is formed at the top of the volume-reducing deformable body 33.

[0024] As shown in Fig. 1, Fig. 2 and Fig. 3(a), the push pin 32 is inserted into the air hole 33a of the volume-reducing and deformable body 33. In the state shown in Fig. 1, there is a very small gap between the air hole 33a and the outer circumferential surface of the seal portion 32b, and air is allowed to flow in and out between the air accommodation space S3 and the outside through the gap. On the other hand, when the operation button 31 is pressed (see Fig. 4(a)), as shown in Fig. 3(a), the volume-reducing and deformable body 33 is depressed by the push pin 32, and the air hole 33a and the outer circumferential surface of the seal portion 32b are brought into close contact with each other, and the air hole 33a is closed by the seal portion 32b. When the air hole 33a is closed by the seal portion 32b, the flow of air in and out between the air accommodation space S3 and the outside through the air hole 33a is blocked.

[0025] The seal peripheral wall 34 is made of the same elastic material as the volume-reducing deformable body 33 and is molded integrally with the volume-reducing deformable body 33. The lower end of the seal peripheral wall 34 forms a connecting portion 34a that is connected to the outer circumferential end of the volume-reducing deformable body 33, and the upper end side of the seal peripheral wall 34 forms a flange portion 34b that protrudes radially outward. The flange portion 34b covers the upper end of the peripheral wall 23a. The flange portion 34b is disposed between the upper end of the peripheral wall 23a and a pressing portion 35d of the cover portion 35 described next, and is sandwiched between them. This seals the gap between the air accommodating space S3 defined inside the volume-reducing deformable body 33 and the peripheral wall 23a.

[0026] The cover portion 35 includes an annular top wall portion 35a, an upper peripheral wall portion 35b that is suspended from the outer edge of the top wall portion 35a, and a lower peripheral wall portion 35c that is connected to the upper peripheral wall portion 35b and is thinner than the upper peripheral wall portion 35b. The top wall portion 35a, the upper peripheral wall portion 35b, and the lower peripheral wall portion 35c form a generally cylindrical shape. The inner peripheral surface side of the connected portion between the upper peripheral wall portion 35b and the lower peripheral wall portion 35c has a step portion formed because the thicknesses of the upper peripheral wall portion 35b and the lower peripheral wall portion 35c are different. This step portion becomes the pressing portion 35d. The outer peripheral surface side of the connected portion is provided with a locking portion 35e that protrudes annularly radially outward. The lower end portion of the lower peripheral wall portion 35c becomes a fitting portion 35f that fits into the engagement portion 23b provided on the outer peripheral surface of the peripheral wall 23a of the cap body 20. The cover portion 35 is attached to the cap body 20 by fitting the fitting portion 35f into the engagement portion 23b.

[0027] The operation button 31 is inserted into the opening of the top wall portion 35a, and in the initial position shown in Fig. 1, the protrusion 31a abuts against the inner surface of the top wall portion 35a. Therefore, further upward axial movement of the operation button 31 is restricted. When the operation button 31 is pressed, the protrusion 31a of the operation button 31 moves to the pressed position shown in Fig. 4(a) while sliding against the inner surface of the upper peripheral wall portion 35b. At the pressed position, the protrusion 31a abuts against the flange portion 34b of the seal peripheral wall 34, and further downward axial movement of the operation button 31 is restricted.

[0028] 1, the overcap portion 40 is configured in a cylindrical shape with a top wall 41 and a peripheral wall 42. A locking portion 42a that detachably locks to a locking portion 35e provided on the outer circumferential surface of the cover portion 35 is provided on the lower end side of the peripheral wall 42.

[0029] Next, the powder suction flow path 50 and the flow path section 60 will be described with reference to Figures 1, 2 and 3(b). The powder suction flow path 50 is constituted by the suction tube 51 as described above. As shown in Figure 1, one end of the suction tube 51 is inserted into the storage space S1. The tip of the suction tube 51 has a shape that is cut at an angle, and is disposed adjacent to the bottom 12 of the container body 10. The other end of the suction tube 51 is held by the suction tube holding tube 22c. The suction tube 51 and the through hole 22a of the lid 22 are in communication with each other.

[0030] In this embodiment, the flow path section 60 has an outer shape that is elongated in a direction that is approximately perpendicular to the powder suction flow path 50. The inflow end of the flow path section 60 is closed by an end face 61 having an inflow hole 61a (inlet port). The outflow end side of the flow path section 60 becomes a discharge port section 62, which is provided so as to protrude radially outward from an opening portion of the peripheral wall 23a of the holding tube section 23.

[0031] The inlet hole 61a is provided with a slit valve 63 (on-off valve). The slit valve 63 is an on-off valve that closes the inlet hole 61a and opens when the outside of the flow path portion 60, that is, the intermediate space S2 surrounded by the cover body 22 and the peripheral wall 23a, is at a positive pressure relative to the upstream flow path 70. More specifically, when there is no pressure difference between the intermediate space S2 and the upstream flow path 70, the inlet hole 61a is closed by the slit valve 63. That is, when the operation button 31 is not pressed, the slit valve 63 is closed. On the other hand, when the operation button 31 is pressed and pressurized air is supplied from the pressurized air supply unit 30 to the flow path portion 60 through the intermediate space S2, the intermediate space S2 becomes at a positive pressure relative to the upstream flow path 70, and the slit valve 63 opens. When the pressing operation of the operation button 31 is released, the intermediate space S2 becomes at a negative pressure relative to the upstream flow path 70 in the process of the volume-reduced deformable body 33 returning to its original shape, and the slit valve 63 closes. When the intermediate space S2 is pressurized and then released from the pressurization, the slit valve 63 closes automatically even if the intermediate space S2 does not become negative pressure. Also, Figures 1, 2 and 4(b) show the slit valve 63 in a closed state, and Figures 3(b) and 4(a) show the slit valve 63 in an open state. The discharge port portion 62 is open and serves as a discharge port 62a for discharging the powder P to the outside.

[0032] As shown in Figures 2 and 3(b), the flow path section 60 has an upstream flow path 70 on the inlet hole 61a side, a downstream flow path 80 on the outlet port 62a side, and a communication section 91 provided in an intermediate flow path 90 between the upstream flow path 70 and the downstream flow path 80 and communicating with a through hole 22a provided in the cover body 22.

[0033] The upstream flow passage 70 is composed of a first air flow passage pipe 71 housed in the flow passage section 60. The outer diameter of the first air flow passage pipe 71 is approximately equal to the inner diameter of the flow passage section 60, and the inner peripheral surface of the flow passage section 60 and the outer peripheral surface of the first air flow passage pipe 71 are in tight contact with each other. The inner diameter of the first air flow passage pipe 71 is larger than the hole diameter of the inlet hole 61a. The first air flow passage pipe 71 is arranged to be coaxial with the inlet hole 61a.

[0034] The downstream flow path 80 is composed of a powder discharge pipe 81 housed in the flow path section 60. Both ends of the powder discharge pipe 81 are open. The inner diameter of the powder discharge pipe 81 is smaller than the first air flow path pipe 71. On the other hand, the outer diameter of the powder discharge pipe 81 is approximately equal to the inner diameter of the flow path section 60, and the inner peripheral surface of the flow path section 60 and the outer peripheral surface of the powder discharge pipe 81 are in tight contact with each other.

[0035] The intermediate flow passage 90 is composed of the communication section 91 and a second air flow passage pipe 92 whose inlet side is connected to the first air flow passage pipe 71. The inner diameter of the second air flow passage pipe 92 is smaller than the inner diameter of the first air flow passage pipe 71 and is approximately equal to the inner diameter of the powder discharge pipe 81. The outlet side of the second air flow passage pipe 92 is closed by an end face 92b having an outlet hole 92a. The hole diameter of this outlet hole 92a is smaller than the inner diameter of the second air flow passage pipe 92 and is approximately equal to the hole diameter of the inlet hole 61a.

[0036] The outer diameter of the second air flow passage pipe 92 is smaller than the inner diameter of the flow passage section 60, and the second air flow passage pipe 92 is arranged coaxially with the first air flow passage pipe 71. Therefore, in the intermediate flow passage 90, a first gap 93 is provided between the inner peripheral surface of the flow passage section 60 and the outer peripheral surface of the second air flow passage pipe 92. The through hole 22a of the cover 22 is located below the outer peripheral surface of the second air flow passage pipe 92. Therefore, the first gap 93 and the through hole 22a are in communication. Also, in the intermediate flow passage 90, Downstream flow path 80 A second gap 94 is provided between the inlet of the second gap 94 and the inlet of the second gap 94. above The flow side is connected to the second air flow passage pipe 92 via the outflow hole 92a, under The flow side communicates with the powder discharge pipe 81. In this embodiment, the communication part 91 is composed of the first gap 93 and the second gap 94.

[0037] Next, a method of using the powder dispensing container 100 will be described with reference to Figures 1 to 4. Note that some of the reference numerals are omitted in Figures 4(a) and 4(b). When using the device, first, the overcap portion 40 is removed from the state shown in FIG. 1. Then, the operation button 31 is pressed axially downward from the initial position shown in FIG. 1 to the pressed position shown in FIG. 4(a). While the operation button 31 is pressed down to the pressed position, the volume-reducing deformation body 33 is deformed by the pressing pin 32. As the volume-reducing deformation of the volume-reducing deformation body 33 occurs, the air in the air accommodating space S3 moves toward the intermediate space S2. Therefore, the intermediate space S2 is pressurized and becomes a positive pressure relative to the inside of the flow path portion 60. Then, the slit valve 63 opens, and the pressurized air flows from the intermediate space S2 into the flow path portion 60 through the inlet hole 61a.

[0038] The pressurized air that flows into the flow path section 60 from the inlet hole 61a passes through the first air flow path pipe 71 that constitutes the upstream flow path 70 shown in Figures 2 and 3, the second air flow path pipe 92 in the intermediate flow path 90, the outlet hole 92a, the second gap 94, and the powder discharge pipe 81 that constitutes the downstream flow path 80, in that order, and is discharged to the outside from the discharge port 62a.

[0039] In the pressurized air flow path formed by these, when the pressurized air flows from the intermediate space S2 into the first air flow path pipe 71, the flow path is once narrowed by the inlet hole 61a, when the pressurized air flows from the first air flow path pipe 71 into the second air flow path pipe 92, the flow path is narrowed by the outlet hole 92a when the pressurized air flows from the second air flow path pipe 92 into the second gap 94. By narrowing the pressurized air flow path including the flow path part 60 in this way, the flow rate of the pressurized air increases in the narrowed part. The communication part 91 communicates with the powder suction flow path 50 via the through hole 22a. Therefore, when the pressurized air passes through the pressurized air flow path, a negative pressure acts on the other end side of the powder suction flow path 50 due to the so-called Venturi effect.

[0040] When negative pressure acts on the other end of the powder suction passage 50, the powder P in the storage space S1 is sucked by the powder suction passage 50. Then, the powder P sucked by the powder suction passage 50 flows through the communication portion 91 through the powder passage (indicated by the arrow R p4(a)). The powder P delivered to the second gap 94 is sucked into the airflow of pressurized air flowing from the second air flow passage pipe 92 toward the powder discharge pipe 81, passes through the powder discharge pipe 81 together with the pressurized air, and is discharged to the outside from the discharge port 62a. The direction of the mixing flow passage through which the powder P is discharged together with the pressurized air is indicated by an outline arrow R in FIG. a+p As shown in Fig.

[0041] On the other hand, when the pressing operation on the operation button 31 is released from the state shown in FIG. 4(a) to the state shown in FIG. 4(b), the operation button 31 moves axially upward from the pressed position to the initial position. When the pressing pin 32 moves axially upward with the movement of the operation button 31, a very small gap is generated between the air hole 33a and the seal portion 32b. Air flows from the outside into the air accommodating space S3 through this gap, and the volume-reduced deformable body 33 returns to its original shape. Since the intermediate space S2 is decompressed until the volume-reduced deformable body 33 returns to its original shape, the intermediate space S2 becomes negative pressure relative to the flow path portion 60. When the intermediate space S2 becomes negative pressure, the slit valve 63 provided in the inlet hole 61a closes to block the inlet hole 61a, preventing the powder P from flowing into the intermediate space S2 from the flow path portion 60 side.

[0042] According to the powder discharge container 100 of the present embodiment configured as described above, the pressurized air supply unit 30 is configured to partition the air storage space S3 on the lid body 22 by the volume-reducing and deforming body 33, and to supply the pressurized air to the flow path unit 60 provided on the lid body 22 by reducing and deforming the volume-reducing and deforming body 33. Therefore, since a bulky balloon-shaped member as in the conventional valve atomizer is not required, the entire container can be configured compactly. Therefore, it is possible to provide a powder discharge container 100 that is small and has excellent portability. Furthermore, since the number of members that must be considered in design, such as balloon-shaped members, is reduced, there are fewer constraints when designing the container, and it is easier to improve the design.

[0043] In the powder discharge container 100 of the above embodiment, the flow path portion 60 is narrowed in the middle, and the flow path portion 60 and the powder suction flow path 50 provided in the storage space S1 of the container body 10 are connected to each other by a communication portion 91 provided in the flow path portion 60. Therefore, when compressed air passes through the flow path portion 60, a negative pressure is applied to the other end side of the powder suction flow path 50 through the communication portion 91 by the so-called Venturi effect, and the powder P can be sucked from the storage space S1. And, since the powder suction flow path 50 is connected to the powder discharge pipe 81 through the communication portion 91, the powder P can be discharged from the discharge port 62a together with the pressurized air. Therefore, unlike a pump mechanism, the powder P can be sucked from the storage space S1 and discharged to the outside with a simple configuration. Therefore, the number of parts and the number of assembly steps can be reduced. Therefore, it is easy to reduce the cost of the entire container.

[0044] The powder dispensing container 100 of the above-described embodiment is merely one aspect of the present invention, and it goes without saying that it can be modified as appropriate without departing from the spirit of the present invention. For example, the configuration of the flow path section 60 described in the above embodiment is merely one example. In this embodiment, the inlet hole 61a, the outlet hole 92a, etc. are used to narrow the flow path in the flow path section 60, but it is sufficient that a part of the flow path section 60 is narrowed in diameter, and the flow path through which the pressurized air passes is narrowed in diameter midway. For example, the flow path section 60 may be configured from a single tube such as a Venturi tube, and the flow path connecting the discharge port and the inlet may be gradually narrowed in diameter from the discharge port side toward the inlet side, and then gradually expanded in diameter.

[0045] Furthermore, in the above embodiment, the flow path section 60 is composed of the first air flow path pipe 71, the second air flow path pipe 92, the communication section 91 and the powder discharge pipe 81, but as described above, the flow path section 60 has a reduced diameter midway through the flow path, and a part of the flow path section 60 serves as a communication section that communicates with the through hole 22a provided in the cover body 22, so that a negative pressure can be applied to the other end of the powder suction flow path 50 via the through hole 22a when the pressurized air passes through the flow path section 60.

[0046] In addition, in the above embodiment, a slit valve 63 is provided in the inlet hole 61a of the flow path section 60, but it is sufficient if a valve body is provided that can control the flow of pressurized air and powder P between the flow path section 60 through the inlet hole 61a (inlet port) and the outside of the inlet hole 61a.

[0047] In the above embodiment, the volume-reducing body 33 is made of an elastically deformable material and has a hemispherical shape. However, for example, the air storage space S3 may be partitioned by a volume-reducing body having a bellows portion, and when the volume-reducing body is pressed, the bellows portion is folded, so that the air in the air storage space S3 is sent to the intermediate space S2. When the volume-reducing body has a bellows portion, the volume-reducing body may be made of PE or the like in addition to the elastic materials such as rubber listed above. In the above embodiment, the air storage space S3 partitioned by the volume-reducing body 33 and the intermediate space S2 between the air storage space S3 and the inlet hole 61a of the flow path section 60 are described separately for convenience, but the intermediate space S2 may be included in the air storage space S3. The specific form of the volume-reducing body 33 and the manner of connection between the air storage space S3 partitioned by the volume-reducing body 33 and the inlet hole 61a of the flow path section 60 are not particularly limited.

[0048] In addition, the pressurized air supply unit 30 has an operation button 31, a push-down pin 32, and a cover portion 35, but the volume-reducing deformation body 33 may be configured to be directly pushed down by a finger or the like, and the configuration of the pressurized air supply unit 30 is not limited to the above embodiment.

[0049] Furthermore, although not particularly described in the above embodiment, for example, a mesh body may be provided to cover the discharge port 62a, or a mesh body may be provided in the powder discharge pipe 81 or at the suction end of the powder discharge pipe 81, so that the powder P passes through the mesh body when it is discharged. The smaller the particle size of each particle constituting the powder P, the more likely the particles are to aggregate. In addition, the particles may adhere to each other due to the influence of the atmospheric humidity, etc. In such a case, the powder P may be discharged in clumps. By providing a mesh body in the discharge flow path of the powder P, such as the discharge port 62a, and discharging the powder P to the outside through the mesh body, the powder P can be discharged from the discharge port 62a in the form of fine particles. [Explanation of symbols]

[0050] 10: Container body 11: Mouth 11a: Male thread 12: Bottom 13: Torso 14:Shoulder 20: Cap body 21: Mounting tube 21a: Female thread 22: Lid 22a: Through hole 22b: Insertion tube 22c: Suction tube holding tube 23: Holding cylinder part 23a: Peripheral wall 23b: Engagement part 30: Pressurized air supply section 31: Operation button 31a:Protrusion 32: Depressor pin 32a: Rod-shaped part 32b: Seal part 33: Volume-reducing transformation body 33a: Air hole 34: Seal periphery 34a: Continuous part 34b:Tsubabe 35: Cover part 35a: Ceiling wall part 35b: Upper peripheral wall part 35c: Lower peripheral wall part 35d: Pressing part 35e: Locking part 35f: Fitting part 40: Overcap part 41: Ceiling wall 42: Peripheral wall 42a: Locking part 50: Powder suction channel 51:Suction tube 60: Flow path section 61: End face 61a: Inflow hole (inflow port) 62:Discharge port 62a: Discharge port 63: Slit valve 70: Upstream flow path 71:First air flow pipe 80: Downstream flow path 81: Powder discharge pipe 90: Intermediate flow path 91:Communication part 92:Second air flow pipe 92a:Outflow hole 92b: End face 93: First Gap 94: The second gap 100: Powder discharge container O: Central axis P: Powder S1: Containment Space S2: intermediate space S3: Air storage space

Claims

1. A container body having a storage space for storing powder; A lid body provided at an opening of the container body and having a through hole penetrating in a thickness direction; a powder suction flow path, one end of which is disposed within the accommodation space and the other end of which is in communication with the through hole; a flow path portion provided on the lid body, the flow path portion having a downstream flow path on a discharge port side and an upstream flow path on an inlet side, the flow path portion having a communication portion between the upstream flow path and the downstream flow path that communicates with the through hole; A pressurized air supply unit that has a volume-reducing and deformable body that defines an air storage space that can accommodate a predetermined volume of air on the lid body, and supplies pressurized air to the flow path unit by reducing and deforming the volume-reducing and deformable body; an on-off valve provided at the inlet to close the inlet and to open when the outside of the flow path portion is under positive pressure; Equipped with a part of the flow path portion is narrowed in diameter, and when the pressurized air supplied from the pressurized air supply portion passes through the flow path portion, a negative pressure is applied to the other end side of the powder suction flow path through the communication portion; The pressurized air supply unit is configured to block air from entering or exiting between the air accommodating space and the outside when the volume-reducing deformable body is deformed, and to allow air to enter or exit between the air accommodating space and the outside when the volume-reducing deformable body is restored to its original shape, The pressurized air supply unit includes: An operation button that can be depressed in the axial direction of the container body; A push pin attached to the operation button; an air hole provided in the volume-reducing deformable body and into which the pressing pin is inserted; Equipped with When the operation button is pressed, the push pin moves axially downward to close the air hole, blocking the flow of air between the air accommodating space and the outside and reducing the volume of the reduced-volume deformable body, and when the operation button is released, air is allowed to flow between the air accommodating space and the outside, restoring the reduced-volume deformable body to its original shape.

2. The powder dispensing container according to claim 1 , wherein the inlet has a smaller diameter than the upstream flow passage.

3. 3. The powder dispensing container according to claim 1, wherein a diameter of the passage between the upstream flow path and the downstream flow path is reduced.

Images