Bubble ejection container

Abstract

To provide a foam dispensing container that can stably produce good foam quality and discharge force. [Solution] A foam dispensing container 1 having a container body 2 and a dispensing device 3, the dispensing device 3 having a pressure accumulating nozzle 3a, and in response to operation, a liquid 5 and air 6 are sent from inside the container body 2 to the pressure accumulating nozzle 3a, mixed to form foam, and then pressurized by the pressure accumulating nozzle 3a and discharged, wherein the pressure accumulating nozzle 3a has a nozzle body portion 7, a valve body 8 and a biasing portion 9, and the nozzle body portion 7 has a tip wall portion 7a, a base end side flow path wall portion 7b and a connecting wall portion 7c The valve body 8 has a tip-side sliding portion 8a, a base-side sliding portion 8b, and a closing wall 8c. The biasing portion 9 generates a biasing force that moves the valve body 8 from the base-side position to the tip-side position. The tip wall portion 7a and the tip-side sliding portion 8a partition the pressurizing chamber 3a3. The valve body 8 moves from the tip-side position to the base-side position against the biasing force of the biasing portion 9 when the pressurizing chamber 3a3 is pressurized with foam, and discharges foam from the discharge port 3a1. This is a foam discharge container.

Description

Technical Field

[0001] The present invention relates to a foam discharging container.

Background Art

[0002] There is known a foam discharging container having a container body and a discharger attached to the container body, the discharger having a pressure accumulating nozzle, mixing liquid and air from inside the container body into the pressure accumulating nozzle while sending them according to an operation to form foam, accumulating the foam in the pressure accumulating nozzle, and discharging the foam (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] A conventional foam discharging container as described in Patent Document 1 performs pressure accumulation in a pressure accumulating nozzle using a slit valve, and there is room for improvement from the viewpoints of foam quality and discharging momentum.

[0005] Therefore, an object of the present invention is to provide a foam discharging container capable of stably obtaining good foam quality and discharging momentum.

Means for Solving the Problems

[0006] One aspect of the present invention is as follows.

[0007] [1] A foam discharging container having a container body and a discharger attached to the container body, the discharger having a pressure accumulating nozzle, mixing liquid and air from inside the container body into the pressure accumulating nozzle while sending them according to an operation to form foam, accumulating the foam in the pressure accumulating nozzle, and discharging the foam, wherein the pressure accumulating nozzle has a nozzle main body portion extending in the nozzle axis direction, a valve body, and a biasing portion. The nozzle body portion has a tip wall portion, a cylindrical base end channel wall portion that forms the bubble channel radially inward, and a connecting wall portion that connects the tip wall portion to the base end channel wall portion. The aforementioned tip wall portion has a discharge port and a tip-side sliding portion, The base end side flow channel wall portion has a base end side sliding portion, The valve body has a tip-side sliding portion extending annularly in the circumferential direction, a base-side sliding portion connected to the tip-side sliding portion, a closing wall, and a connecting portion connecting the closing wall to the tip-side sliding portion. The valve body moves relative to the nozzle body in the nozzle axial direction between the tip side position and the base side position, as the tip side sliding portion slides against the tip side sliding portion and the base side sliding portion slides against the base side sliding portion. The aforementioned closing wall closes the discharge port at the tip end position and opens the discharge port at the base end position. The biasing portion generates a biasing force that moves the valve body from the base end position to the tip end position. The aforementioned tip wall portion and the aforementioned tip-side sliding portion partition the pressurizing chamber. The connecting portion has a notch that connects the radially inner flow path of the tip-side sliding portion, which communicates with the flow path in the base-side flow path wall, to the pressurizing chamber. The pressure from the bubbles that the valve body receives in the pressurized chamber toward the base end is greater than the pressure from the bubbles that the valve body receives in the upstream side of the pressurized chamber toward the tip end. A foam discharge container wherein the valve body moves from the tip end position to the base end position against the biasing force of the biasing part when the pressurizing chamber is pressurized with foam, causing the foam to be discharged from the discharge port.

[0008] [2] The foam dispensing container according to [1], wherein the biasing part is composed of a leaf spring.

[0009] [3] The pressure accumulation nozzle is composed of a nozzle base, a spring member attached to the nozzle base, a valve body attached to the spring member, and a cover member that covers the spring member and the valve body and is attached to the nozzle base. The spring member has a mounting portion attached to the tip of the nozzle base, a cylindrical base-end sliding portion extending from the mounting portion toward the tip, and a biasing portion consisting of a plurality of leaf springs arranged radially outward from the base-end sliding portion and spaced apart in the circumferential direction, each extending from the mounting portion toward the tip. The cover member has the tip wall portion and the connecting wall portion, The foam discharge container according to [2], wherein the tip-side sliding portion of the valve body is pressed open radially outward when the pressurizing chamber is pressurized with foam.

[0010] [4] The foam dispensing container according to any one of [1] to [3], wherein the dispenser mixes the liquid and air from inside the container body to the pressure accumulating nozzle by a squeeze operation on the container body to form foam. [Effects of the Invention]

[0011] According to the present invention, it is possible to provide a foam dispensing container that can stably obtain good foam quality and discharge force. [Brief explanation of the drawing]

[0012] [Figure 1] This is a cross-sectional view showing a foam dispensing container according to one embodiment of the present invention. [Figure 2] Figure 1 is a cross-sectional view showing the state of the pressure accumulator nozzle during discharge. [Modes for carrying out the invention]

[0013] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0014] As shown in FIGS. 1 and 2, in one embodiment of the present invention, the foam discharge container 1 has a container body 2 and a discharger 3 attached to the container body 2. The discharger 3 has a pressure accumulating nozzle 3a, and in response to an operation, liquid 5 and air 6 are sent from inside the container body 2 to the pressure accumulating nozzle 3a while being mixed to form foam, and the foam is accumulated and discharged by the pressure accumulating nozzle 3a. In this embodiment, the foam discharge container 1 is configured as a squeeze discharge type foam discharge container 1 in which the discharger 3 sends liquid 5 and air 6 from inside the container body 2 to the pressure accumulating nozzle 3a while mixing them to form foam by a squeezing operation on the container body 2. However, the present invention is not limited to this. For example, it may be configured as a pump discharge type foam discharge container 1 in which the discharger 3 is a push-down head type or trigger type pump.

[0015] The container body 2 has a cylindrical mouth portion 2a centered on the central axis O, a body portion 2b connected to the lower end of the mouth portion 2a and receiving a squeezing operation, and a bottom portion (not shown) connected to the lower end of the body portion 2b, and contains the liquid 5. Inside the container body 2, air 6 is also contained above the liquid level of the liquid 5. The type of the liquid 5 is not particularly limited. For example, it may be liquid soap, or may be cosmetics, food, or the like.

[0016] The discharger 3 has a supply portion 3b that sends liquid 5 and air 6 from inside the container body 2 to the pressure accumulating nozzle 3a while mixing them to form foam by a squeezing operation on the container body 2, and an outside air introduction valve 3c attached to the supply portion 3b. The outside air introduction valve 3c allows outside air sucked into the pressure accumulating nozzle 3a from the discharge port 3a1 to be introduced into the container body 2 while bypassing the supply portion 3b until the discharge port 3a1 is closed when the squeezing operation is released. On the other hand, during the squeezing operation, it suppresses the intrusion of air 6 and liquid 5 inside the container body 2 into the pressure accumulating nozzle 3a while bypassing the supply portion 3b.

[0017] The supply unit 3b has a liquid flow path 3b2 for flowing the liquid 5 from inside the container body 2 to the confluence part 3b1, an air flow path 3b3 for flowing the air 6 from inside the container body 2 to the confluence part 3b1, and a mixed flow path 3b4 for flowing the mixed liquid 5 and air 6 from the confluence part 3b1 to the inlet of the accumulator nozzle 3a, and has a foaming member 3b5 in the mixed flow path 3b4. The foaming member 3b5 foams the liquid 5 and air 6 that have passed through the foaming member 3b5. The accumulator nozzle 3a has a vent hole 3a2 for discharging the outside air introduced into the accumulator nozzle 3a toward the outside air introduction valve 3c near the inlet of the accumulator nozzle 3a.

[0018] The accumulator nozzle 3a has a nozzle main body part 7 extending in the nozzle axis direction along the nozzle axis P, a valve body 8, and a biasing part 9 composed of a plurality of leaf springs 9a.

[0019] In this embodiment, the direction along the central axis O of the mouth part 2a is referred to as the vertical direction, the direction from the bottom toward the mouth part 2a along the vertical direction is referred to as the upward direction, the opposite direction is referred to as the downward direction, the direction toward the nozzle tip side along the nozzle axis direction is referred to as the tip side, the opposite direction is referred to as the base end side, the direction orthogonal to the nozzle axis P is referred to as the radial direction, and the direction orbiting around the nozzle axis P is referred to as the circumferential direction. In this embodiment, the ejector 3 has a configuration in which the nozzle axis P intersects the central axis O of the mouth part 2a, but it is not limited to this.

[0020] The nozzle main body part 7 has a tip wall part 7a, a cylindrical base end side flow path wall part 7b forming a flow path for bubbles on the radially inner side, and a connecting wall part 7c connecting the tip wall part 7a to the base end side flow path wall part 7b. The tip wall part 7a has a discharge cylinder 7a1 forming a discharge port 3a1, a cylindrical tip side sliding part 7a2 extending in the nozzle axis direction, and a tip surface wall 7a3 connecting the tip of the discharge cylinder 7a1 to the tip of the tip side sliding part 7a2. The base end side flow path wall part 7b has a cylindrical base end side sliding part 7b1 extending in the nozzle axis direction.

[0021] The valve body 8 has a tip-side sliding portion 8a that extends annularly in the circumferential direction, a base-side sliding portion 8b connected to the tip-side sliding portion 8a, a closing wall 8c, and a connecting portion 8d that connects the closing wall 8c to the tip-side sliding portion 8a. The tip wall portion 7a and the tip-side sliding portion 8a partition the pressurizing chamber 3a3, and the connecting portion 8d has a notch 8d1 that connects the radially inner flow path of the tip-side sliding portion 8a, which communicates with the flow path in the base-side flow path wall portion 7b, to the pressurizing chamber 3a3.

[0022] The tip-side sliding portion 8a has a tip-side skirt portion 8a1 that widens in diameter toward the tip, and the tip of the tip-side skirt portion 8a1 slides on the inner circumferential surface of the tip-side sliding portion 7a2. The base-side sliding portion 8b is cylindrical and extends from the tip-side sliding portion 8a toward the base. The base-side sliding portion 8b has a base-side skirt portion 8b1 that widens in diameter toward the base, and the base end of the base-side skirt portion 8b1 slides on the inner circumferential surface of the base-side sliding portion 7b1.

[0023] The valve body 8 moves in the nozzle axial direction between the nozzle body 7 and the nozzle body 7, as the tip-side sliding portion 8a slides against the tip-side sliding portion 7a2 and the base-side sliding portion 8b slides against the base-side sliding portion 7b1. The closing wall 8c closes the discharge port 3a1 at the tip-side position and opens the discharge port 3a1 at the base-side position.

[0024] The pressure accumulator nozzle 3a is composed of a nozzle base 10, a spring member 11 attached to the nozzle base 10, a valve body 8 attached to the spring member 11, and a cover member 12 that covers the spring member 11 and the valve body 8 and is attached to the nozzle base 10. The supply section 3b extends downward from the lower end of the nozzle base 10. The discharger 3 has a mounting cap section 3d that extends downward from the lower end of the nozzle base 10 outside the supply section 3b and is attached to the opening 2a.

[0025] The material used to form the nozzle base 10, spring member 11, valve body 8, and cover member 12 is not particularly limited, but in this embodiment it is resin.

[0026] The spring member 11 has a mounting portion 11a that is attached to the tip of the nozzle base 10. The mounting portion 11a has a fitting cylinder 11a1 that fits onto the inner circumferential surface of the tip of the nozzle base 10, and a flange 11a2 that extends radially outward from the tip of the fitting cylinder 11a1 and abuts against the tip surface of the nozzle base 10. The spring member 11 has a cylindrical base-side sliding portion 7b1 that extends from the tip of the fitting cylinder 11a1 toward the tip, and a biasing portion 9 consisting of a plurality of leaf springs 9a that are arranged radially outward from the base-side sliding portion 7b1 at circumferential intervals and extend toward the tip from the flange 11a2 of the mounting portion 11a. The base-side flow path wall portion 7b is formed by the nozzle base 10 and the mounting portion 11a of the spring member 11. The cover member 12 has a tip wall portion 7a and a connecting wall portion 7c.

[0027] The leaf spring 9a has a slightly curved shape in the cross-section including the nozzle axis P, which forms an S-shaped curve that narrows in diameter towards the base end at the tip. The tip-side sliding portion 8a of the valve body 8 is pressed by the pressure chamber 3a3 being pressurized with bubbles, which pushes the tips of the multiple leaf springs 9a radially outward. As a result, the biasing portion 9 generates a biasing force that moves the valve body 8 from the base end position to the tip end position.

[0028] The pressure from the bubbles that the valve body 8 receives towards the base end in the pressurized chamber 3a3 is greater than the pressure from the bubbles that the valve body 8 receives towards the tip end upstream of the pressurized chamber 3a3. Therefore, as the pressurized chamber 3a3 is pressurized with bubbles, the valve body 8 moves from the tip end position to the base end position against the biasing force of the biasing part 9, causing the bubbles to be discharged from the discharge port 3a1.

[0029] According to this embodiment, the valve body 8 is activated against the biasing force of the biasing unit 9 by pressurizing the pressurizing chamber 3a3, thereby opening the discharge port 3a1. This configuration allows for stable and good pressure accumulation, resulting in stable foam quality and discharge force. Furthermore, according to this embodiment, since the biasing unit 9 is composed of a leaf spring 9a, a strong biasing force can be obtained from the initial stage of pressurization, thereby enhancing the above-mentioned effects.

[0030] Furthermore, according to this embodiment, since the pressure accumulator nozzle 3a is composed of a nozzle base 10, a spring member 11, a valve body 8, and a cover member 12, simple assembly is possible, and good productivity can be achieved. In addition, according to this embodiment, since all the components constituting the pressure accumulator nozzle 3a are made of resin, good recyclability can be achieved.

[0031] Although embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and the embodiments described above can be modified in various ways without departing from the spirit of the present invention. [Explanation of Symbols]

[0032] 1 Foam dispensing container 2. Container body 2a Mouth 2b Torso 3 Dispenser 3a Pressure accumulator nozzle 3a1 Discharge port 3a2 Ventilation opening 3a3 Pressurized chamber 3b Supply section 3b1 Confluence 3b2 Liquid channel 3b3 Airflow channel 3b4 Mixing channel 3b5 Foaming component 3c Outside air intake valve 3D mounting cap part 5 liquid 6 Air 7. Nozzle body 7a Tip wall 7a1 Discharge tube 7a2 Tip side sliding part 7a3 Tip wall 7b Proximal channel wall 7b1 Proximal sliding part 7c Connecting wall 8 valve body 8a Sliding part on the tip side 8a1 Front-side skirt section 8b Base end sliding part 8b1 Base end skirt portion 8c Blocking wall 8d Connecting part 8d1 Notch 9. Encouraging part 9a Leaf spring 10 Nozzle base 11 Spring component 11a Mounting part 11a1 Fitting tube 11a2 flange 12 Cover component O center axis P Nozzle axis

Claims

1. A foam dispensing container comprising a container body and a dispensing device attached to the container body, wherein the dispensing device has a pressure accumulating nozzle, and in response to operation, liquid and air are sent from inside the container body to the pressure accumulating nozzle, mixed to form foam, and then pressurized by the pressure accumulating nozzle and discharged, The pressure accumulating nozzle has a nozzle body portion extending in the direction of the nozzle axis, a valve body, and a biasing portion. The nozzle body portion has a tip wall portion, a cylindrical base end channel wall portion that forms the bubble channel radially inward, and a connecting wall portion that connects the tip wall portion to the base end channel wall portion. The aforementioned tip wall portion has a discharge port and a tip-side sliding portion, The base end side flow channel wall portion has a base end side sliding portion, The valve body has a tip-side sliding portion extending annularly in the circumferential direction, a base-side sliding portion connected to the tip-side sliding portion, a closing wall, and a connecting portion connecting the closing wall to the tip-side sliding portion. The valve body moves relative to the nozzle body in the nozzle axial direction between the tip side position and the base side position, as the tip side sliding portion slides against the tip side sliding portion and the base side sliding portion slides against the base side sliding portion. The aforementioned closing wall closes the discharge port at the tip end position and opens the discharge port at the base end position. The biasing portion generates a biasing force that moves the valve body from the base end position to the tip end position. The aforementioned tip wall portion and the aforementioned tip-side sliding portion partition the pressurizing chamber. The connecting portion has a notch that connects the radially inner flow path of the tip-side sliding portion, which communicates with the flow path in the base-side flow path wall, to the pressurizing chamber. The pressure from the bubbles that the valve body receives in the pressurized chamber toward the base end is greater than the pressure from the bubbles that the valve body receives in the upstream side of the pressurized chamber toward the tip end. A foam discharge container wherein the valve body moves from the tip end position to the base end position against the biasing force of the biasing part when the pressurizing chamber is pressurized with foam, causing the foam to be discharged from the discharge port.

2. The foam dispensing container according to claim 1, wherein the biasing part is composed of a leaf spring.

3. The pressure accumulation nozzle is composed of a nozzle base, a spring member attached to the nozzle base, a valve body attached to the spring member, and a cover member that covers the spring member and the valve body and is attached to the nozzle base. The spring member has a mounting portion attached to the tip of the nozzle base, a cylindrical base-end sliding portion extending from the mounting portion toward the tip, and a biasing portion consisting of a plurality of leaf springs arranged radially outward from the base-end sliding portion and spaced apart in the circumferential direction, each extending from the mounting portion toward the tip. The cover member has the tip wall portion and the connecting wall portion, The foam discharge container according to claim 2, wherein the tip-side sliding portion of the valve body expands the tips of the plurality of leaf springs radially outward when the pressurizing chamber is pressurized by the foam.

4. The foam dispensing container according to claim 1, wherein the dispensing device mixes the liquid and air from inside the container body to the pressure accumulating nozzle by a squeeze operation on the container body to form foam.

Images