Dispensing heads, pumps, contents dispensing containers, aerosol products and contents dispensing products

Abstract

It provides a compact spray head while incorporating a valve that can close the nozzle. [Solution] The device comprises an inner cylinder member and an outer cylinder member. Inside the outer cylinder member are a columnar valve that closes the nozzle opening and a lever member that applies force to the columnar valve to move it. The lever member rotates when the outer cylinder member is pushed down, pushing down the columnar valve and opening the nozzle opening.

Description

Technical Field

[0001] The present invention relates to a pump for ejecting contents inside a container, or to an aerosol ejection head. Background Art

[0002] Conventionally, in products of various fields such as cosmetics, foods, pharmaceuticals, and the like, content ejection containers have been used that eject the content stored in the container to the outside by driving a pump attached to the container. As a pump used for a content ejection container, a type of pump (a so-called shut-off pump) is known in which an ejection port is closed by a valve when the pump is not operated, and the valve moves to open the ejection port when the pump is operated. The shut-off pump can prevent the content from dripping out of the ejection port and solidifying to block the ejection port when the pump is not in operation.

[0003] Patent Document 1 is an example of a shut-off pump. Patent Document 1 discloses an ejection head including: a shut pin that seals (closes) an extraction hole (ejection port) for the content; an elastic member that biases the shut pin forward to seal the extraction hole; and a lever that moves the shut pin rearward to open the extraction hole when a head body is pressed down. Prior Art Documents Patent Documents

[0004] Patent Document 1 Japanese Patent No. 5179824 Summary of the Invention Problem to be Solved by the Invention

[0005] As described in Patent Document 1, in conventional shut-off pumps, the component (lever) that moves the shut-off pin backward to open the nozzle is located at the rear end of the shut-off pin. Furthermore, since the lever is not directly attached to the pump head body but to a bearing member mounted below the head body, the distance between the lever's rotation axis (pin) and the shut-off pin is long, resulting in a large force being applied to the lever when driving the shut-off pin. In addition, because the lever is large, a large space is required for its rotation, which leads to the problem of the rear of the spray head becoming large.

[0006] In view of the above circumstances, the present invention aims to provide a compact spray head that is equipped with a valve capable of closing the nozzle. [Means for solving the problem]

[0007] One aspect of the present invention provides a discharge head that is attached to a discharge section for discharging the contents of a container to the outside of the container, and ejects the discharged contents in a direction intersecting the axial direction of the discharge section. The discharge head has an inner cylindrical member attached to the discharge section and an outer cylindrical member attached to the outer circumference of the inner cylindrical member so as to be movable along the axial direction of the inner cylindrical member. The inner cylindrical member includes a first flow path through which the contents discharged from the discharge section pass and are guided to the outer cylindrical member. The outer cylindrical member has a second flow path through which the contents that have passed through the first flow path inside the inner cylindrical member flow in, a third flow path connected to the second flow path and guiding the contents in a direction intersecting the axial direction, a nozzle provided at the tip of the third flow path, a columnar valve disposed in the third flow path and capable of closing the nozzle at its tip, an elastic member disposed in the third flow path and applying a force to the rear end of the columnar valve in a direction from the rear end toward the tip, and a lever member that applies a force to the columnar valve in a direction from the tip toward the rear end to move it. The lever member comprises one end, the other end, and a rotating shaft provided between the two ends. The rotating shaft is rotatably fixed to the inner wall of the internal space through which the contents of the outer cylinder member pass. One end is located in the third flow path and is in contact with the columnar valve, and the other end is in contact with a part of the inner cylinder member. When the outer cylinder member moves axially relative to the inner cylinder member due to an external force, the lever member rotates with its other end pressed against the part of the inner cylinder member. This rotation presses one end against the columnar valve, applying a force in the direction from the tip to the rear end, moving the columnar valve and creating a gap at the nozzle through which the contents can be ejected. [Effects of the Invention]

[0008] According to the present invention, by positioning the component that opens the nozzle closer to the center of the pump than in conventional designs, the overall size of the product can be reduced. [Brief explanation of the drawing]

[0009] [Figure 1] This is a cross-sectional view of the contents ejection container according to this embodiment. [Figure 2A] This is a cross-sectional view of the pump equipped with the ejection head 5 according to this embodiment, before operation. [Figure 2B] This is a cross-sectional view of a pump equipped with a discharge head 5 according to this embodiment during operation. [Figure 3] (a), (b), and (c) are a front view, a cross-sectional view, and a rear view of the columnar valve 18 of the ejection head 5 in this embodiment. [Figure 4] (a) and (b) are a rear view and a top view of the elastic member 20 of the ejection head 5 of this embodiment. [Figure 5] (a), (b), (c), and (d) are the top view, side view, bottom view, and front view of the lever member 26 of the ejection head 5 in this embodiment. [Figure 6] (a) and (b) are a cross-sectional view and a bottom view of the outer cylindrical member 22 of the ejection head 5 of this embodiment. [Figure 7] (a), (b), and (c) are a front view, a cross-sectional view, and a rear view of the nozzle 14 of the ejection head 5 of this embodiment. [Figure 8] (a), (b), and (c) are a front view, a cross-sectional view, and a rear view of the holder 16 of the ejection head 5 in this embodiment. [Figure 9] (a), (b), and (c) are a top view, a cross-sectional view, and a bottom view of the inner cylinder member 24 of the ejection head 5 in this embodiment. [Modes for carrying out the invention]

[0010] One embodiment of the present invention will be described in detail below with reference to the drawings.

[0011] The pump 8 equipped with the discharge head 5 of this embodiment will be described with reference to the drawings.

[0012] Figure 1 is a cross-sectional view of a product 2 that dispenses contents and is equipped with a pump 8 according to this embodiment. Figures 2A and 2B are cross-sectional views of the pump 8, with Figure 2A being a cross-sectional view of the pump 8 before operation and Figure 2B being a cross-sectional view of the pump 8 during operation.

[0013] The pump 8 includes a cylinder 28 inserted into the container 6 through an opening 6a of the container 6, a valve body 30 disposed inside the cylinder 28, a mounting fitting 42 that mounts the cylinder 28 to the opening 6a of the container 6, and an ejection head 5. A piston rod (discharge unit) 38 that discharges the content 1 sucked up from the container 6 into the cylinder 28 is connected to the valve body 30. The ejection head 5 is mounted to the piston rod 38.

[0014] As shown in Figures 1 to 3, the ejection head 5 includes an inner cylindrical member 24 mounted to the piston rod 38, and an outer cylindrical member 22 mounted on the outer periphery of the inner cylindrical member 24 so as to be movable along the direction of the central axis α of the inner cylindrical member 24. The inner cylindrical member 24 is mounted to the piston rod 38.

[0015] The inner cylindrical member 24 includes a first flow path 24c, and allows the content 1 discharged from the upper end of the piston rod 38 to pass through the first flow path 24c and guides the content 1 to the outer cylindrical member 22.

[0016] The outer cylindrical member 22 includes a second flow path 22d and a third flow path 22e. The content 1 that has passed through the first flow path 24c of the inner cylindrical member 24 flows into the second flow path 22d.

[0017] The third flow path 22e is connected to the second flow path 22d, and guides the inflowing content 1 in the direction of an axis β that intersects (orthogonally in the present case) the direction of the axis α. The outer cylindrical member 22 is provided with an ejection port 12 at the tip of the third flow path 22e.

[0018] Furthermore, a columnar valve 18 having the shape shown in Figures 3(a) to 3(c) is disposed inside the third flow path 22e. The axial direction of the columnar valve 18 matches the direction of the axis β, which is the axial direction of the third flow path 22e. A tip end 18a of the columnar valve 18 is capable of closing the ejection port 12. In addition, the columnar valve 18 is provided with a flange portion 18c closer to a rear end 18b than the position of the central axis α. It is preferable that the flange portion 18c is flange-shaped, but the flange portion 18c may be a protrusion or a recess as long as the shape allows a force to be applied to the columnar valve 18.

[0019] Furthermore, an elastic member 20 having the shape shown in Figures 4(a) and 4(b) is arranged within the third flow path 22e. One end of the elastic member 20 is in contact with the rear end 18b and flange portion 18c of the columnar valve 18, and the other end is in contact with the wall surface of the third flow path 22e, thereby applying a force to the columnar valve 18 in the direction from the rear end 18b to the front end 18a.

[0020] Furthermore, lever members 26, having the shapes shown in Figures 5(a) to (d), are arranged within the second flow path 22d and the third flow path 22e of the outer cylinder member 22. The lever members 26 exert a force on the flange-shaped portion 18c of the columnar valve 18 in a direction from the tip portion 18a toward the rear portion 18b, thereby causing it to move.

[0021] The lever member 26 comprises a rotating shaft 26c and a first member 26a and a second member 26b fixed to the rotating shaft 26c. The axial direction of the rotating shaft 26c is perpendicular to the central axis α of the outer cylinder member 22. The tip of the first member 26a is located within the third flow path 22e. A U-shaped notch 26d is formed at the tip of the first member 26a, and the U-shaped notch 26d causes it to contact the outer circumferential surface of the columnar valve 18. The tip of the second member 26b is in contact with a part (upper surface) of the inner cylinder member 24. That is, the rotating shaft 26c is located between the tip of the first member 26a and the tip of the second member 26b, and the rotating shaft 26c is rotatably fixed to the inner wall of the internal space (second flow path 22d, third flow path 22e) through which the contents 1 of the outer cylinder member 22 pass. As shown in Figures 6(a) and (b), a bearing 22c is provided on the inner wall of the connection between the second flow path 22d and the third flow path 22e of the outer cylindrical member 22, and the rotating shaft 26c is fixed thereto. The angle between the tip of the first member 26a and the tip of the second member 26b with respect to the rotating shaft 26c is less than 180 degrees.

[0022] With this structure, when the outer cylinder member 22 is moved (pushed) by an external force along the direction of axis α relative to the inner cylinder member 24 from the state shown in Figure 2A, the lever member 26 rotates around the rotation axis 26c as the tip of the second member 26b is pressed against the upper surface of the inner cylinder member 24. This rotation causes the area around the U-shaped notch 26d at the tip of the first member 26a of the lever member 26 to be pressed against the flange portion 18c of the columnar valve 18, applying a force in the direction from the tip portion 18a to the rear portion 18b of the columnar valve 18. This causes the columnar valve 18 to retract, creating a gap between the columnar valve 18 and the nozzle 12, opening the nozzle 12, and allowing the contents 1 to be ejected forward from the nozzle 12.

[0023] When the outer cylinder member 22 is not moving along the axis α relative to the inner cylinder member 24 due to external force, the columnar valve 18 closes the nozzle 12 due to the force applied by the elastic member 20. This prevents the contents 1 remaining in the third flow path 22e from dripping out of the nozzle 12. It also prevents the contents 1 remaining in the third flow path 22e near the nozzle 12 from solidifying and blocking the nozzle 12 or the third flow path 22e.

[0024] In this case, the rotation axis 26c of the lever member 26 is rotatably fixed to the inner wall of the outer cylinder member 22, and is positioned where the central axis α of the outer cylinder member 22 passes through, so the distance between the rotation axis 26c and the flange portion 18 of the columnar valve 18 is short. Therefore, the lever member 26 can be made smaller, and there is no need to prepare a separate space for the lever member 26 to operate from the second flow path 22d and the third flow path 22e, making it possible to provide a small jet head 5.

[0025] Furthermore, it is preferable that the distance between the tip of the first member 26a of the lever member 26 and the rotation axis 26c is longer than the distance between the tip of the second member 26b and the rotation axis 26c. This allows the lever member 26 to apply force to the columnar valve 18 by lever action with the rotation axis 26c as the fulcrum.

[0026] Further details are provided below.

[0027] The pump 8 equipped with the spray head 5 of this embodiment is attached to the container 6, as shown in Figure 1. The container 6 with the pump 8 attached is called the contents dispensing container 4. The contents 1 are contained inside the container 6. The contents 1 can be various things, such as cosmetics, food and pharmaceuticals, depending on the application of the contents dispensing product 2.

[0028] The contents dispensing container 4 has a container 6 with an opening 6a at its upper end. Various materials can be used for the container 6 depending on the contents 1. For example, resin materials such as polypropylene (PP) or metal materials such as stainless steel can be used.

[0029] The pump 8 is positioned above the opening 6a of the container 6 and is fixed to the container 6 via a mounting device 42. A tube 10 may be connected to the pump 8.

[0030] As described above, the pump 8 of this embodiment is a shut-off pump in which the nozzle 12 of the discharge head 5 is closed when the pump 8 is not operating, and the nozzle 12 opens when the pump 8 is operating. The individual components that make up the pump 8 will be described in detail below.

[0031] Figure 2A is a cross-sectional view of the pump 8 according to this embodiment before operation, and Figure 2B is a cross-sectional view of the pump 8 according to this embodiment during operation. In Figures 2A and 2B, the X, Y, and Z axes are perpendicular to each other.

[0032] The outer cylindrical member 22 is constructed by mounting the nozzle 14 and the holder 16 in the internal space of the main body 22f. The space 22e enclosed by the nozzle 14 and the holder 16 is the third flow path.

[0033] Figures 7(a) to 7(c) are the front view, cross-sectional view, and rear view of the nozzle 14. As shown in Figures 7(a) to 7(c), the nozzle 14 consists of a cylindrical member having a tapered tip 14a. Inside the nozzle 14, there is a space 14b (part of the third flow path 22e) that penetrates the tip and rear end of the nozzle 14. The portion of the space 14b that opens to the tip 14a constitutes the nozzle outlet 12.

[0034] As shown in Figure 2A, the holder 16 supports the nozzle 14. Figures 8(a) to 8(c) are the front view, cross-sectional view, and rear view of the holder 16. As shown in Figures 8(a) to 8(c), the holder 16 consists of a cylindrical member having a space 16a inside (partially the third flow path 22e).

[0035] As shown in Figure 2A, the nozzle 14, holder 16, and columnar valve 18 are arranged within the main body 22f such that their respective central axes coincide with axis β.

[0036] Figures 6(a) and (b) show a cross-sectional view and a bottom view of the main body 22f of the outer cylinder member 22. As shown in Figures 6(a) and (b), the main body 22f is a cylindrical member having an upper surface 22a on the upper end side and a space 22b on the lower end side. A space 22e is provided inside the upper end side of the main body 22f, and a space 22h is provided inside the lower end side. A partition wall 22m is provided between spaces 22e and 22h, separating the two spaces. An opening 22j of space 22b is provided on the side of the upper end of the main body 22f. A nozzle 14 and a holder 16 are arranged inside the upper end space 22e, and the tip of the nozzle 14 protrudes to the outside from the opening 22j (see Figure 2A). The space between the nozzle 14 and the holder 16 is the third flow path 22e, which houses the columnar valve 18 and the elastic member 20. Furthermore, an inner cylinder 22i is provided in the upper part of the space 22h at the lower end of the main body 22f. The upper end of the inner cylinder 22i is fixed to the partition wall 22m, and the space inside the inner cylinder 22i becomes the second flow path 22d. The partition wall 22m is provided with a connecting opening 22k that connects the second flow path 22d and the third flow path 22e, and a pair of bearings 22c are provided on the inner wall of the connecting opening 22k, facing each other in the radial direction of the outer cylinder member 22. The rotation shaft 26c of the lever member 26 is rotatably mounted on the pair of bearings 22c. The bearings 22c are semicircular.

[0037] A projection 22g is provided along the circumferential direction on the inner wall surface near the lower end of the main body 22f of the outer cylinder member 22. The projection 22g contacts a projection 24d on the outer circumferential surface of the inner cylinder member 24, which will be described later, thereby limiting the range of movement of the outer cylinder member 22 in the direction of the central axis α and preventing the outer cylinder member 22 from falling off the inner cylinder member 24.

[0038] Next, the inner cylinder member 24 will be described using Figures 9(a) to 9(c). Figures 9(a) to 9(c) are the top view, cross-sectional view, and bottom view of the inner cylinder member 24. As shown in Figures 9(a) to 9(c), the inner cylinder member 24 is a cylindrical member having an upper surface 24a, a lower surface 24b, and a first flow path 24c that penetrates from the lower surface 24b to the upper surface 24a. The outer diameter of the inner cylinder member 24 is smaller than the inner diameter of the outer cylinder member 22. A cylindrical sliding portion 24e is fixed to the upper surface 24a of the inner cylinder member 24. A projection 24d is provided on the outer circumferential surface of the inner cylinder member 24 along the circumferential direction.

[0039] The upper end of the inner cylinder member 24 is inserted into the space 22h from the space 22b at the lower end of the main body 22f of the outer cylinder member 22, and the projection 24d overcomes and engages with the projection 22g on the outer peripheral surface of the main body 22f of the outer cylinder member 22. In this state, the cylindrical sliding portion 24e is in contact with the inner wall of the inner cylinder 22i of the main body 22f of the outer cylinder member 22, forming a second flow path 22d. While the cylindrical sliding portion 24e and the inner wall of the inner cylinder 22i remain in contact, the outer cylinder member 22 can descend in the direction of the central axis α relative to the inner cylinder member 24.

[0040] Furthermore, a recess 24f is provided on the lower surface 24b of the inner cylinder member 24, extending in the circumferential direction. The cylindrical projection 42a of the mounting device 42 is inserted into the recess 24f when the inner cylinder member 24 descends (see Figures 2A and 2B). In other words, the cylindrical projection 42a of the mounting device 42 guides the descent of the inner cylinder member 24 in the direction of the central axis α.

[0041] Pump 8 comprises a cylinder 28, a piston 34 housed inside the cylinder 28, an elastic member 40, and a ball 36. A valve body 30 is mounted on the outer circumference of the piston 34. A piston rod 38 is connected to the upper end of the piston 34. The upper end of the valve body 30 is engaged with a groove provided parallel to the central axis α on the inner wall of the piston rod 38, so that it follows the up-and-down movement of the piston rod 38 with a delay. When pump 8 is operating (when the piston 34 and piston rod 38 are descending), a gap is created between the inner wall of the piston rod 38 and the outer wall of the valve body 30, allowing the contents 1 to move upwards in the pump 8. The piston 34 is located between the lower end of the piston rod 38 and the valve body 30. When descending along the central axis α, it is pushed down by the lower end of the piston rod 38, and when ascending, it is pushed up by the outer circumference of the valve body 30.

[0042] An opening is provided at the lower end of the cylinder 28, which is closed by a ball 36 that can be opened and closed. A tube 10 is connected to the opening of the cylinder 28.

[0043] Next, the movement of each component of the pump 8 during operation will be explained using Figures 2A and 2B. Starting from the state shown in Figure 2A, when the user pushes down the upper surface 22a of the outer cylinder member 22 in the direction of arrow D1, the outer cylinder member 22 moves downward relative to the inner cylinder member 24, as shown in Figure 2B. As a result, the lower end of the second member 26b of the lever member 26 is pressed against the upper surface of the inner cylinder member 24, causing the lever member 26 to rotate around the rotation axis 26c. The area around the U-shaped notch 26d at the upper end of the first member 26a of the lever member 26 pushes the flange portion 18c of the columnar valve 18, causing the columnar valve 18 to retract and the nozzle 12 to open. At the time of the first push down of the outer cylinder member 22, the contents 1 have not yet reached the third flow path 22e of the outer cylinder member 22, so at this point, the contents 1 are not ejected from the nozzle 12.

[0044] When the lower end of the inner cylinder 22i of the outer cylinder member 22 reaches and contacts the upper surface 24a of the outer circumference of the inner cylinder member 24, the outer cylinder member 22 cannot descend any further relative to the inner cylinder member 224. As a result, the outer cylinder member 22 and the inner cylinder member 24 descend together, and the piston rod 38 connected to the inner cylinder member 24 descends. The lower end of the piston rod 38 pushes down the piston 34, causing it to descend. At this time, the valve body 30 is pushed down by the piston 34, with a delay compared to the piston rod 38 and the piston 34.

[0045] Then, when the user stops (releases) pushing down the pump 8, the piston 34 is pushed up by the elastic member 40, and the piston 34 and piston rod 38 rise. The valve body 30 also rises, lagging behind the piston rod 38 and piston 34. At this time, the ball 36 rises, creating a gap between the cylinder 28 and the ball 36. At this time, the internal volume of the cylinder 28 becomes larger than when the piston 34 is descending, so the inside of the cylinder 28 becomes negative pressure, and the contents 1 in the container 6 are drawn into the cylinder 28 via the tube 10.

[0046] The contents 1, which are drawn up into the cylinder 28, rise through the gap between the valve body 30 and the piston 34 that is created when the piston rod 38 and piston 34 descend, and further rise upward towards the pump 8 through the internal space of the piston rod 38.

[0047] The contents 1 flow from the upper end of the piston rod 38 into the first flow path 24c in the inner cylinder member 24, fill the second flow path 22d in the outer cylinder member 22, and are then guided in the axial direction β by the third flow path 22e.

[0048] At this time, when the outer cylinder member 22 is pushed down again by the user, the lever member 26 rotates in the direction of arrow D2, the columnar valve 18 is pushed down by the lever member 26, and the nozzle 12 opens. As a result, the contents 1 in the third flow path 22e are ejected in the forward direction.

[0049] When the user stops pushing down the outer cylinder member 22, the outer cylinder member 22 rises, the lever member 26 rotates in the opposite direction to arrow D2, and the force pushing down the columnar valve 18 is eliminated. As a result, the biasing force of the elastic member 20 causes the columnar valve 18 to move forward and close the nozzle 12. This prevents the contents 1 in the third flow path 22e from dripping out of the nozzle 12.

[0050] As described above, in this embodiment, the pump 8 uses the lever member 26 as a lever to retract the columnar valve 18. Specifically, the rotation axis 26c of the lever member 26 acts as the fulcrum, the second member 26b is the point of force application, and the notch 26d of the first member 26a is the point of application of force, thereby applying force to the columnar valve 18 and moving it.

[0051] As described above, the lever member 26 of the contents ejection product 2 according to this embodiment is located inside the second flow path 22d and the third flow path 22e of the outer cylinder member 22, rather than at the rear end of the valve 18, and the rotating shaft 26c is positioned so as to pass through the central axis X of the pump 8. As a result, the distance between the rotating shaft 26c of the lever member 26 and the flange portion 18c of the columnar valve 18 is small, allowing the lever member 26 to be made smaller. Therefore, it is not necessary for the lever member 26 to protrude outward from the outer diameter of the pump 8, and the ejection head 5 can be made smaller. Consequently, the contents ejection product 2 can be made smaller.

[0052] Furthermore, by positioning the rotation axis 26c of the lever member 26 to pass through the central axis α of the pump 8, the central axes of the outer cylinder member 22, the inner cylinder member 24, and the lever member 26 can be aligned. This simplifies the assembly process during manufacturing, as these parts can be assembled by sequentially placing them along the central axis α. Aligning the central axes is also easier.

[0053] Furthermore, by positioning the lever member 26 inside the outer cylinder member 22, as described above, the distance between the rotation axis 26c of the lever member 26 and the columnar valve 18 is reduced, allowing the lever member 26 to be miniaturized. Consequently, the bending moment applied to the first member 26a and the second part 26b of the lever member 26 is also reduced. Therefore, instead of using a hard material with high bending rigidity (e.g., POM (polyoxymethylene)) for the lever member 26, it is possible to manufacture the lever member 26 using a relatively soft material with low bending rigidity, such as PP (polypropylene) or PE (polyethylene). This increases the freedom of material selection and makes it possible to select materials with a low environmental impact. Moreover, all components except the elastic member 20 can be made of the same material (e.g., resin material such as PP), allowing the entire contents ejection product 2 to be made of environmentally friendly, inexpensive, and lightweight materials. Additionally, by using a resin spring for the elastic member 20, the entire product can be made of resin.

[0054] The above-described discharge head 5 can also be attached to an aerosol container. For example, the inner cylinder member 24 can be attached to the stem of the aerosol valve of an aerosol container. When the user pushes down the outer cylinder member 22 relative to the inner cylinder member 24, the columnar valve 18 is pushed back by the lever member 26. When the user pushes down further until the outer cylinder member 22 and the inner cylinder member 24 become one, the stem is pushed down, and the contents of the aerosol container are discharged from the upper end of the stem. The contents discharged from the stem are guided from the third flow path 22e to the nozzle 12 and sprayed out. When the user stops pushing down the outer cylinder member 22, the columnar valve 18 moves forward due to the action of the elastic member 20, blocking the nozzle 12. This prevents the contents 1 remaining in the third flow path 22e from dripping out of the nozzle 12. It also prevents the contents 1 remaining in the third flow path 22e near the nozzle 12 from solidifying and blocking the nozzle 12 or the third flow path 22e.

[0055] As described above, the present invention demonstrates that it is possible to provide a compact nozzle head while incorporating a valve capable of closing the nozzle.

[0056] Furthermore, the structures, methods, etc., of the embodiments and modifications described above may be modified and implemented without departing from the scope of the object of the present invention. [Explanation of Symbols]

[0057] 1:Contents 2: Contents squirt product 4:Contents spout container 5: Spray head 6: Container 6a:Aperture 8: Pump 10: Tube 12: Spout 14: Nozzle 14a: Tip 14b: Space 16: Holder 16a: Space 18: Columnar valve 18a:Tip 18b: Rear end 18c: Flange 20: Elastic member 22: Outer cylinder member 22a:Top surface 22b:Aperture 22c: Bearing 22d: Second channel 22e: Third channel 22f: Main unit 22g: Protrusion 22h: Space 22i: Inner cylinder 22j:Aperture 22k: Connecting aperture 22m: bulkhead 24: Inner cylinder member 24a:Top surface 24b: Bottom surface 24c: First channel 24d: Protrusion 24e: Cylindrical sliding part 24f: Recess 24g: Top surface of the outer edge 26: Lever component 26a: First member 26b: Second member 26c: Rotation axis 26d: U-shaped notch 28: Cylinder 30: Valve body 32: Lower piston rod 34: Piston 36: Ball 38: Piston rod 40: Elastic member 42: Fittings 42a: Cylindrical protrusion

Claims

1. A discharge head is attached to a discharge section that discharges the contents of a container to the outside of the container, and ejects the discharged contents in a direction intersecting the axial direction of the discharge section, The discharge section comprises an inner cylindrical member attached to the discharge section, and an outer cylindrical member attached to the outer circumference of the inner cylindrical member so as to be movable along the axial direction of the inner cylindrical member. The inner cylindrical member includes a first flow path through which the contents discharged from the discharge section pass and are guided to the outer cylindrical member. The outer cylinder member has a second channel through which the contents that have passed through the first channel of the inner cylinder member flow in, a third channel connected to the second channel that guides the contents in a direction intersecting the axial direction, a nozzle provided at the tip of the third channel, a columnar valve disposed within the third channel and capable of closing the nozzle at its tip, an elastic member disposed within the third channel that applies force to the rear end of the columnar valve in a direction from the rear end toward the tip, and a lever member that applies force to the columnar valve in a direction from the tip toward the rear end to move it. The lever member comprises one end, the other end, and a rotating shaft provided between the one end and the other end, the rotating shaft being rotatably fixed to the inner wall of the internal space through which the contents of the outer cylinder member pass, the one end being located in the third flow path and in contact with the columnar valve, and the other end being in contact with a part of the inner cylinder member, When the outer cylinder member moves in the axial direction relative to the inner cylinder member due to an external force, the lever member rotates with its other end pressed against a part of the inner cylinder member, and this rotation causes one end to press against the columnar valve, applying a force in the direction from the tip to the rear end, moving the columnar valve and creating a gap in the nozzle from which the contents can be ejected.

2. The ejection head according to claim 1, wherein the rotation axis of the lever member is positioned at a location through which the central axis of the outer cylinder member passes, and the axial direction of the rotation axis is perpendicular to the central axis of the outer cylinder member.

3. The columnar valve includes a flange-shaped portion, The ejection head according to claim 1, wherein one end of the lever member is in contact with the flange-shaped portion and applies a force to the columnar valve in a direction from the tip to the rear end.

4. The ejection head according to claim 1, wherein the lever member has a first member and a second member fixed to the rotation axis, the tip of the first member is the one end, the tip of the second member is the other end, and the angle between the one end and the other end with respect to the rotation axis is less than 180 degrees.

5. The ejection head according to claim 4, wherein the distance between the tip of the first member and the rotating shaft is longer than the distance between the tip of the second member and the rotating shaft, and the lever member applies force to the columnar valve by the action of a lever with the rotating shaft as a fulcrum.

6. The second flow path of the outer cylindrical member is connected to the third flow path, The ejection head according to claim 1, wherein the rotating shaft of the lever member is rotatably fixed to the inner wall of the connecting portion between the second flow path and the third flow path.

7. The ejection head according to claim 1, wherein when the outer cylindrical member is not moving in the axial direction relative to the inner cylindrical member due to an external force, the columnar valve closes the nozzle by the force applied by the elastic member.

8. The ejection head according to claim 1, wherein the material of each component other than the elastic member is polypropylene or polyethylene.

9. The ejection head according to claim 8, wherein the material is polypropylene.

10. A pump having a cylinder inserted into the container, a piston disposed in the cylinder, and a discharge head according to any one of claims 1 to 9, wherein the piston is connected to a discharge section that discharges the contents sucked up from the container into the cylinder, and the inner cylindrical member of the discharge head is attached to the discharge section.

11. It comprises a container for holding contents, and a pump attached to the container for ejecting the contents to the outside of the container, The pump is the pump described in claim 10, a contents ejection container.

12. The device comprises an aerosol container fitted with an aerosol valve and a spray head according to any one of claims 1 to 9, An aerosol product wherein the aerosol valve includes a stem for dispensing the contents of the aerosol container, and the inner cylindrical member of the spray head is attached to the stem.

13. It comprises contents, a container for containing the contents, and a pump attached to the container for ejecting the contents to the outside of the container. The pump is the pump described in claim 10, a product for dispensing contents.

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