Discharge head and discharge device

Abstract

To provide a discharge head capable of equalizing forces acting on multiple stems.SOLUTION: A discharge head 6 according to the invention includes: a frame part 62 attachable to an aerosol can 2; a nozzle 61 movably provided to the frame part 62 and configured to push down a first stem 42 and a second stem 43 when moved downward; and an operating piece 66 operated by a user when the nozzle 61 is moved downward, The nozzle 61 is provided with passages for contents from the first stem 42 and the second stem 43, and configured so that the contents that pass through the passageway are discharged from the discharge port. The nozzle 61 is provided with a flat receiving surface 67, and the receiving surface 67 is positioned below the operating piece 66. The operating piece 66 is formed with a downwardly protruding protrusion 66a, and the protrusion 66a is configured to be in contact with the receiving surface 67 when the operating piece 66 is operated by the user.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a discharge head and a discharge device.

Background Art

[0002] Conventionally, a two-liquid discharger in which a discharge head is attached to an aerosol can is known (see, for example, Patent Document 1). The aerosol can has two stems and is configured to be able to discharge individual contents from each stem. The discharge head is for pushing down the two stems to discharge the contents.

[0003] The discharge head includes a frame portion that can be attached to the aerosol can, a nozzle that is provided movably with respect to the frame portion and is configured to push down a plurality of stems when moved downward, and an operation piece that is operated by a user when moving the nozzle downward. The nozzle is provided with passages for the contents from the two stems, and the contents passing through the passages are configured to be discharged from the discharge port.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Here, for example, when an end portion in the width direction of the operation piece is operated by a user, variations occur in the force acting on the two stems arranged in the width direction of the operation piece via the nozzle, so that the discharge amounts of the contents from the two stems may vary.

[0006] The present invention has been made to solve the above problems, and an object of the present invention is to provide a discharge head and a discharge device capable of equalizing the forces acting on a plurality of stems. [Means for solving the problem]

[0007] The discharge head according to the present invention is provided on a container having multiple stems from which individual contents can be discharged, and is used to push down the multiple stems to discharge the contents. The discharge head comprises a frame that can be attached to the container, a nozzle that is movable relative to the frame and configured to push down the multiple stems when moved downward, and an operating piece that is operated by the user when the nozzle is moved downward. The nozzle is provided with passages for the contents from the multiple stems, and is configured so that the contents that have passed through the passages are discharged from the discharge port. The nozzle is provided with a flat receiving surface, which is located below the operating piece. The operating piece has a projection that protrudes downward, and is configured so that the projection contacts the receiving surface when the operating piece is operated by the user.

[0008] In the above-described discharge head, when the frame is attached to the container, multiple stems are arranged in the width direction of the operating piece, and the protrusion may be curved in an arc shape such that the central part is located below both ends in the width direction.

[0009] In the discharge head described above, the frame portion has a pair of vertical wall portions arranged opposite each other with an operating piece in between, and the upper ends of the pair of vertical wall portions may be positioned above the operating piece.

[0010] In the discharge head described above, the nozzle may have an opening / closing section for cleaning the passage, and the operating piece may be provided on the opening / closing section.

[0011] The dispensing device according to the present invention comprises a container having a plurality of stems configured to dispense individual contents from each stem, and a dispensing head provided on the container for pushing down the plurality of stems to dispense the contents. The dispensing head is the dispensing head described above. [Effects of the Invention]

[0012] According to the discharge head and the discharge device of the present invention, it is possible to equalize the forces acting on a plurality of stems.

Brief Description of the Drawings

[0013] [Figure 1] Fig. 8 is an exploded perspective view showing a two-liquid discharger according to the first embodiment. [Figure 2] Fig. 11 is a view of the two-liquid discharger of Fig. 1 seen from another angle. [Figure 3] Fig. 14 is a plan view showing the discharge head of the two-liquid discharger of Fig. 1. [Figure 4] Fig. 17 is a view of the discharge head of Fig. 3 seen from the rear side. [Figure 5] Fig. 20 is a perspective view showing the state where the opening / closing part of the discharge head of Fig. 3 is opened. [Figure 6] Fig. 23 is a view of the discharge head of Fig. 5 seen from another angle. [Figure 7] Fig. 26 is a plan view of the discharge head of Fig. 5. [Figure 8] Fig. 29 is a cross-sectional view of the two-liquid discharger according to the first embodiment taken along the line A-A of Fig. 3. [Figure 9] Fig. 32 is a perspective view showing a two-liquid discharger according to the second embodiment. [Figure 10] Fig. 35 is a view of the two-liquid discharger of Fig. 9 seen from the rear side. [Figure 11] Fig. 38 is a plan view showing a discharge head according to the first modification of the first embodiment. [Figure 12] Fig. 41 is a perspective view showing a discharge head according to the second modification of the first embodiment. [Figure 13] Fig. 44 is a perspective view showing a discharge head according to the third modification of the first embodiment.

Embodiments for Carrying Out the Invention

[0014] Hereinafter, embodiments of the present invention will be described.

[0015] (First Embodiment) First, referring to Figs. 1 to 8, the structure of the two-liquid discharger 1 according to the first embodiment of the present invention will be described.

[0016] As shown in FIGS. 1 and 2, the two-liquid ejector 1 includes an aerosol can 2 and a nozzle unit 3, and the nozzle unit 3 is attached to the aerosol can 2. The two-liquid ejector 1 is an example of the "ejection device" of the present invention, and the aerosol can 2 is an example of the "container" of the present invention.

[0017] The aerosol can 2 is formed in a cylindrical shape and contains, for example, two types of contents. Inside the aerosol can 2, for example, a first container that contains a first agent (content) containing an alkaline agent for hair dyeing, a dye, etc., and a second container that contains a second agent (content) containing an oxidizing agent for hair dyeing, etc. are stored in a state where they are adjacent to each other. For example, the first container and the second container are pouch containers.

[0018] A valve 4 is provided at one end side (upper end portion) in the direction (Z direction) along the central axis 100 of the aerosol can 2. The valve 4 is configured to be switchable between a closed state in which the two types of contents of the aerosol can 2 are not ejected and an open state in which the two types of contents of the aerosol can 2 are ejected individually.

[0019] The valve 4 includes a valve body 41, a first stem 42, and a second stem 43. The first stem 42 and the second stem 43 have passages for ejecting the contents and are provided adjacent to each other in the lateral direction (X direction). The first stem 42 and the second stem 43 are provided so as to be able to move up and down with respect to the valve body 41. The first stem 42 is connected to the first container, and the second stem 43 is connected to the second container. Therefore, when the first stem 42 is pushed down, the content of the first container is ejected from the first stem 42, and when the second stem 43 is pushed down, the content of the second container is ejected from the second stem 43. The first stem 42 and the second stem 43 are examples of the "stem" of the present invention.

[0020] The nozzle unit 3 is designed to receive user input and dispense the contents of the aerosol can 2. The nozzle unit 3 consists of two parts: a base 5 and a dispensing head 6.

[0021] The base 5 is detachably mounted on one end of the aerosol can 2 in a direction along the central axis 100, such that the first stem 42 and second stem 43 of the valve 4 are exposed. The base 5 has a double-cylinder structure and includes an inner cylinder portion 51 and an outer cylinder portion 52 that are spaced apart in a concentric circle, and a connecting portion 53 (see Figure 8) that connects the inner cylinder portion 51 and the outer cylinder portion 52.

[0022] The inner cylinder portion 51 is formed in a cylindrical shape extending in the vertical direction (Z direction), and its inner circumferential surface is configured to be attachable to the valve body 41 of the valve 4 of the aerosol can 2. The upper end of the inner cylinder portion 51 is provided with a top plate portion 51c having an oval-shaped hole 51b in the center. The outer cylinder portion 52 is missing a portion of its circumferential region (one side in the Y direction), and is therefore an incomplete cylinder. The connecting portion 53 is configured to connect the lower end of the inner cylinder portion 51 and the lower end of the outer cylinder portion 52.

[0023] When the base 5 is attached to the aerosol can 2, the first stem 42 and second stem 43 of the aerosol can 2 protrude from the oval-shaped hole 51b of the top plate portion 51c, and the outer surface of the outer cylinder portion 52 is flush with the outer surface of the aerosol can 2.

[0024] Furthermore, movable pieces 521 are provided at two opposing locations in the lateral direction (X direction) of the outer cylinder portion 52. The movable pieces 521 are formed in the shape of an elastically deformable tongue, and two protrusions 522 and 523 extending parallel to the circumferential direction are provided at their upper ends. The protrusions 522 and 523 are formed to protrude radially outward, with the protrusion 522 positioned above the protrusion 523. The bridging portion 622 of the discharge head 6, described later, is fitted between the protrusions 522 and 523, thereby connecting the base 5 and the discharge head 6. When the movable piece 521 is elastically deformed radially inward, the engagement between the protrusion 522 and the bridging portion 622 is released, allowing the base 5 and the discharge head 6 to be separated.

[0025] The discharge head 6 is detachably attached to the upper part of the base 5 and has a nozzle 61 and a frame 62. That is, the discharge head 6 is detachably provided to the aerosol can 2 via the base 5. The nozzle 61 is cantilevered to the first connecting portion 62c1 of the frame 62, which will be described later, via an elastic arm 65 (see Figure 8). For this reason, the nozzle 61 is provided so as to be movable in the vertical direction (Z direction) relative to the frame 62.

[0026] The nozzle 61 is connected to the first stem 42 and the second stem 43 of the aerosol can 2, and a passage is provided for combining and discharging the contents from the first stem 42 and the contents from the second stem 43. As shown in Figure 8, this passage consists of a first downward-opening recess 61a, a second downward-opening recess 61b, a first vertical hole 61c, a second vertical hole 61d, a confluence section 61f, and a horizontal hole 61e.

[0027] The first downward-opening recess 61a and the second downward-opening recess 61b are located on the underside of the portion of the nozzle 61 that connects to the elastic arm 65. The first downward-opening recess 61a and the second downward-opening recess 61b are spaced apart in the width direction (X direction) of the nozzle 61. The first downward-opening recess 61a is configured to fit with the first stem 42, and the second downward-opening recess 61b is configured to fit with the second stem 43. Therefore, when the nozzle 61 is moved downward, it is configured to push down the first stem 42 and the second stem 43.

[0028] The first vertical hole 61c and the second vertical hole 61d (see Figure 7) are located between the first downward-opening recess 61a and the second downward-opening recess 61b and the confluence section 61f. The first vertical hole 61c connects the first downward-opening recess 61a and the confluence section 61f, while the second vertical hole 61d connects the second downward-opening recess 61b and the confluence section 61f. The confluence section 61f is located above the portion of the nozzle 61 that is connected to the elastic arm 65, and is located between the first vertical hole 61c and the second vertical hole 61d and the horizontal hole 61e.

[0029] The lateral hole 61e is formed to extend in the front-rear direction (Y direction). One end (rear side) of the lateral hole 61e faces the confluence section 61f, and the other end (front side) is open to the outside. In other words, the other end (outer opening) of the lateral hole 61e is an outlet for confluence of the two types of contents and discharged to the outside.

[0030] As shown in Figures 5 and 6, an opening / closing section 63 for opening and closing the confluence section 61f is provided on the upper part of the nozzle 61 where it is connected to the elastic arm 65, via a hinge 64. The opening / closing section 63 is rotated so as to bend backward on the hinge 64 as a pivot point to close the confluence section 61f, and is rotated so as to be pulled forward on the hinge 64 as a pivot point to open the confluence section 61f. The opening / closing section 63 is provided with a rectangular frame-shaped protrusion 631. The protrusion 631 is formed to fit into the confluence section 61f when the opening / closing section 63 is in the closed position.

[0031] On the side of the opening / closing section 63 opposite the hinge 64, there is an operating piece 66 that is operated by the user when moving the nozzle 61 downward. The operating piece 66 is positioned on the rear side of the opening / closing section 63 when the opening / closing section 63 is in the closed state. That is, when the opening / closing section 63 is in the closed state, the operating piece 66 is positioned on the rear side of the nozzle 61. Further details regarding the operating piece 66 will be described later.

[0032] The frame portion 62 can be attached to the aerosol can 2 via the base 5 and movably supports the nozzle 61. As shown in Figure 4, the frame portion 62 has a first vertical wall portion 62a and a second vertical wall portion 62b. The first vertical wall portion 62a and the second vertical wall portion 62b are arranged to face each other in the lateral direction (X direction), sandwiching the nozzle 61 and the operating piece 66. Note that the first vertical wall portion 62a and the second vertical wall portion 62b are examples of the "vertical wall portion" of the present invention.

[0033] The first vertical wall portion 62a has an inner surface 62a1 perpendicular to the lateral direction, and the inner surface 62a1 is spaced apart from the nozzle 61 and the operating piece 66. The second vertical wall portion 62b has an inner surface 62b1 perpendicular to the lateral direction, and the inner surface 62b1 is spaced apart from the nozzle 61 and the operating piece 66. The first vertical wall portion 62a and the second vertical wall portion 62b are connected by a first connecting portion 62c1 and a second connecting portion 62c2, as shown in Figure 3.

[0034] The first connecting portion 62c1 is configured to connect the lower end of the first vertical wall portion 62a and the lower end of the second vertical wall portion 62b on the front side (left side in Figure 3). The second connecting portion 62c2 is configured to connect the lower end of the first vertical wall portion 62a and the lower end of the second vertical wall portion 62b on the rear side (right side in Figure 3). An elastic arm 65 is formed on the first connecting portion 62c1, as shown in Figure 8. The elastic arm 65 is formed to extend diagonally upward toward the rear from the first connecting portion 62c1, and its rear end (upper end) is connected to the nozzle 61.

[0035] Furthermore, the first vertical wall portion 62a and the second vertical wall portion 62b are higher than the upper ends of the nozzle 61 and the operating piece 66. The outer surfaces of the first vertical wall portion 62a and the second vertical wall portion 62b (see Figures 1 and 2) are formed in a rounded shape so as to be flush with the outer peripheral surface of the outer cylindrical portion 52 of the base 5.

[0036] Furthermore, engagement holes 621 are provided at the lower ends of the outer surfaces of the first vertical wall portion 62a and the second vertical wall portion 62b, and a bridging portion 622 is formed below the engagement holes 621. These engagement holes 621 are formed to extend in the circumferential direction and are configured to allow the protruding portion 522 of the movable piece 521 to be fitted into them.

[0037] [Operation piece] As shown in Figure 2, a flat receiving surface 67 is provided below the operating piece 66. The receiving surface 67 is a plate-like body that protrudes rearward from the lower side of the nozzle 61. The operating piece 66 is also a plate-like body that protrudes rearward from the upper side (opening / closing section 63) of the nozzle 61 and is arranged parallel to the receiving surface 67. Therefore, the operating piece 66 and the receiving surface 67 are provided adjacent to the nozzle 61 in the front-rear direction (Y direction) and are positioned rearward relative to the nozzle 61. The upper surface of the operating piece 66 is formed to be flat, for example.

[0038] Here, as shown in Figure 4, a projection 66a is formed on the lower surface of the operating piece 66, projecting downward. The projection 66a is formed to contact the receiving surface 67 when the opening / closing part 63 is in the closed position. Specifically, the projection 66a is curved in an arc shape such that its central part is located below both ends in the width direction (X direction) of the operating piece 66. As a result, the projection 66a contacts the central part of the receiving surface 67 in the width direction. That is, the contact position between the projection 66a and the receiving surface 67 is set to be an intermediate position between the first stem 42 and the second stem 43 in the lateral direction (X direction).

[0039] Furthermore, as shown in Figure 8, the projection 66a is formed such that its protrusion increases as it moves backward in the front-rear direction (Y direction). As a result, the projection 66a and the receiving surface 67 are in contact on the rear side (right side in Figure 8). That is, on the front side (left side in Figure 8), a gap is formed between the projection 66a and the receiving surface 67, and this gap increases as it moves forward.

[0040] Furthermore, the first stem 42 and the second stem 43 are positioned between the operating piece 66 and the receiving surface 67 and the elastic arm 65 in the front-rear direction. Therefore, when the operating piece 66 is pressed down by the user, the portion of the nozzle 61 connected to the elastic arm 65 is pressed down, thereby pressing down the first stem 42 and the second stem 43. Here, when the operating piece 66 is pressed down by the user, the operating piece 66 deforms, and the pressing force is transmitted to the receiving surface 67 via the projection 66a. For this reason, even if the end of the operating piece 66 in the width direction is pressed down, the projection 66a can press the center of the receiving surface 67 in the width direction.

[0041] As shown in Figure 3, the operating piece 66 is positioned between the first vertical wall portion 62a and the second vertical wall portion 62b. The rear end of the operating piece 66 is positioned inward (forward) relative to the outer circumference of the second connecting portion 62c2. As shown in Figure 8, the operating piece 66 is positioned below the upper ends of the first vertical wall portion 62a and the second vertical wall portion 62b. Furthermore, when the frame portion 62 is attached to the aerosol can 2 via the base 5, the first stem 42 and the second stem 43 are arranged in the width direction of the operating piece 66.

[0042] -Installation Procedure- Next, with reference to Figure 1, the procedure for attaching the nozzle unit 3 to the aerosol can 2 will be described.

[0043] First, the base 5 (see Figure 1) of the nozzle unit 3 is attached to the aerosol can 2 (see Figure 1). Specifically, the inner cylinder portion 51 of the base 5 is fitted onto the valve body 41 of the valve 4 of the aerosol can 2. Next, the dispensing head 6 (see Figure 1) is attached to the base 5. Specifically, the user pushes the movable piece 521 of the base 5 radially inward, causing the movable piece 521 to elastically deform radially inward, and the dispensing head 6 is fitted onto the base 5. Then, when the elastic deformation of the movable piece 521 is released, the protruding portion 522 of the movable piece 521 is fitted into the engagement hole 621. That is, the dispensing head 6 is attached to the base 5 by the engagement of the protruding portion 522 with the bridging portion 622.

[0044] -Operation during use- Next, with reference to Figure 8, the operation of the two-component dispenser 1 will be explained.

[0045] When the user presses the operating piece 66 of the discharge head 6 (see Figure 8), the projection 66a of the operating piece 66 presses against the receiving surface 67. As a result, the nozzle 61, along with the operating piece 66 and the receiving surface 67, moves downward (tilts) with the first connecting portion 62c1 of the frame portion 62 as the pivot point. This causes the nozzle 61 to push down the first stem 42 and the second stem 43 of the aerosol can 2. As a result, the two types of contents of the aerosol can 2 are discharged simultaneously from the first stem 42 and the second stem 43. The contents from the first stem 42 flow into the confluence portion 61f via the first vertical hole 61c, and the contents from the second stem 43 flow into the confluence portion 61f via the second vertical hole 61d. The two types of contents that have merged at the confluence portion 61f flow into the horizontal hole 61e and are discharged from the outer opening of the horizontal hole 61e (the discharge port of the nozzle 61). In other words, the contents from the first stem 42 and the second stem 43 pass through the passage of the nozzle 61 and are discharged from the discharge port.

[0046] -Cleaning Procedure- Next, the procedure for cleaning the nozzle 61 will be described with reference to Figures 1 and 6-8.

[0047] First, the discharge head 6 (see Figure 1) is removed from the base 5 (see Figure 1). Specifically, when the user pushes the movable piece 521 of the base 5 radially inward, the movable piece 521 elastically deforms radially inward, releasing the engagement between the protruding portion 522 and the bridging portion 622, and in this state, the discharge head 6 is pulled upward away from the base 5. Next, the opening / closing portion 63 rotates around the hinge 64 as a pivot point, opening the confluence portion 61f as shown in Figure 6. In this state, the confluence portion 61f, the first vertical hole 61c (see Figure 7), the second vertical hole 61d (see Figure 7), the first downward-opening recess 61a (see Figure 8), the second downward-opening recess 61b (see Figure 8), and the horizontal hole 61e are washed with water or the like. This makes it possible to easily wash away the two types of contents adhering to them. Note that the nozzle 61 cleaning operation may also be performed with the discharge head 6 attached to the base 5.

[0048] -effect- In the first embodiment, as described above, the nozzle 61 is provided with a flat receiving surface 67, the receiving surface 67 is positioned below the operating piece 66, and a projection 66a that contacts the receiving surface 67 is formed on the operating piece 66. With this configuration, the force exerted by the user pushing down the operating piece 66 is transmitted to the receiving surface 67 via the projection 66a, thereby equalizing the forces acting on the first stem 42 and the second stem 43.

[0049] Furthermore, in the first embodiment, the projection 66a is curved in an arc shape so that its central portion is located below both ends in the width direction. This allows the projection 66a to press the central portion of the receiving surface 67 in the width direction even if the end of the operating piece 66 in the width direction is pressed when the user pushes down the operating piece 66. This suppresses variations in the force acting on the first stem 42 and second stem 43, which are aligned in the width direction of the operating piece 66, via the nozzle 61. Therefore, it is possible to equalize the amount of contents discharged from the first stem 42 and the amount of contents discharged from the second stem 43.

[0050] Furthermore, in the first embodiment, the operating piece 66 and the receiving surface 67 are integrally formed with the nozzle 61, thereby suppressing an increase in the number of parts.

[0051] Furthermore, in the first embodiment, the upper ends of the first vertical wall portion 62a and the second vertical wall portion 62b are made higher than the operating piece 66, thereby restricting unintended access to the operating piece 66, and thus making it less likely for the operating piece 66 to be operated by mistake.

[0052] Furthermore, in the first embodiment, the opening and closing portion 63 is formed on the nozzle 61, which allows for easy cleaning of the contents' passage.

[0053] Furthermore, in the first embodiment, since the nozzle unit 3 is composed of two parts, a base 5 and a discharge head 6, the number of components is reduced, and manufacturing costs can be lowered.

[0054] (Second Embodiment) Next, with reference to Figures 9 and 10, the structure of the two-liquid dispenser 200 according to the second embodiment of the present invention will be described. In the second embodiment, unlike the first embodiment, the operating piece 223 is configured separately from the nozzle 222.

[0055] As shown in Figures 9 and 10, the two-component dispenser 200 comprises two aerosol cans 210 and a dispensing head 220 provided on the aerosol cans 210. The two-component dispenser 200 is an example of the "dispensing device" of the present invention, and the two aerosol cans 210 are an example of the "container" of the present invention.

[0056] Two aerosol cans 210 are assembled adjacent to each other and each contains a different type of contents. Each aerosol can 210 has a stem 210a (see Figure 10) and is configured to dispense its contents from the stem 210a when the stem 210a is pressed down.

[0057] The discharge head 220 includes a case 221 and a nozzle 222, and is provided to press down the two stems 210a to discharge the contents. The case 221 has a case body 221a that is attached to the top of the two aerosol cans 210, and a cover 221b that covers the upper end surface of the case body 221a. Note that the case 221 is an example of the "frame portion" of the present invention.

[0058] The nozzle 222 is housed inside the case body 221a so as to be movable in the vertical direction, and is configured to push down the stem 210a when moved downward. The nozzle 222 is also provided with passages (not shown) for contents from the two stems 210a, and is configured so that the contents that pass through these passages are discharged from the discharge port 222a (see Figure 9). A flat receiving surface 222b (see Figure 10) is formed on the upper side of the nozzle 222.

[0059] The cover 221b has an operating piece 223 that is operated by the user when moving the nozzle 222 downward. The lower surface of the operating piece 223 has a projection 223a that protrudes downward. A receiving surface 222b is positioned below the operating piece 223, and the projection 223a is in contact with the receiving surface 222b. Specifically, the projection 223a is curved in an arc shape such that its central part is located below both ends in the width direction of the operating piece 223. As a result, the projection 223a is in contact with the central part of the receiving surface 222b in the width direction. That is, the contact position between the projection 223a and the receiving surface 222b is set to be an intermediate position between the two stems 210a in the lateral direction.

[0060] Furthermore, when the user presses the operating piece 223, the operating piece 223 deforms, and the pressing force is transmitted to the receiving surface 222b via the projection 223a. Therefore, even if the end of the operating piece 223 in the width direction is pressed, the projection 223a can still press the center of the receiving surface 222b in the width direction.

[0061] The effects of the second embodiment are the same as those of the first embodiment.

[0062] (Other embodiments) The embodiments disclosed herein are illustrative in all respects and do not constitute a limiting interpretation. Therefore, the technical scope of the present invention is not construed solely by the embodiments described above, but is defined based on the claims. Furthermore, the technical scope of the present invention includes all modifications within the meaning and scope of equivalence to the claims.

[0063] For example, in the first embodiment, an aerosol can 2 was shown as an example of a container of the present invention, but the present invention is not limited to this, and the container of the present invention may be a container equipped with a pressurized pump.

[0064] Furthermore, while the first embodiment showed an example in which the aerosol can 2 is provided with two stems (first stem 42 and second stem 43), the aerosol can is not limited to this, and may be provided with three or more stems.

[0065] Furthermore, although the first embodiment showed an example in which the nozzle unit 3 is composed of two parts, the nozzle unit is not limited to this and may be composed of three or more parts. Also, the base may not be provided, and it may consist only of a discharge head.

[0066] Furthermore, in the first embodiment, an example was shown in which the projection 66a abuts against the receiving surface 67 when the opening / closing part 63 is in a closed state. However, the embodiment is not limited to this, and the projection may be separated from the receiving surface when the opening / closing part is in a closed state, as long as the projection contacts the receiving surface when the operating piece is pushed down.

[0067] Furthermore, in the first embodiment, a weak portion 661 may be formed between the opening / closing portion 63 and the operating piece 66, as shown in the first modified example of the discharge head 6a in Figure 11. The weak portion 661 is composed of notches 661a formed at both ends in the width direction. This makes the operating piece 66 more susceptible to deformation. Although an example has been shown in which the weak portion 661 is composed of notches 661a, the weak portion is not limited to this and may be composed of a thin-walled portion.

[0068] Furthermore, while the first embodiment shows an example where the upper surface of the operating piece 66 is formed flat, the shape of the upper surface of the operating piece is not limited to this and can be anything. For example, as shown in the second modified dispensing head 6b in Figure 12, a spherical crown-shaped recess 662 may be formed on the upper surface of the operating piece 66. Alternatively, as shown in the third modified dispensing head 6c in Figure 13, a plurality of protrusions 663 may be formed on the upper surface of the operating piece 66. The plurality of protrusions 663 are formed to extend in the width direction and are spaced apart in the front-to-back direction. These designs make it less likely for the user's fingers to slip.

[0069] Furthermore, in the first embodiment, an example was shown in which a projection 66a protruding downward is provided on the lower surface of the flat operating piece 66. However, the invention is not limited to this, and the operating piece may be formed in a U-shape in cross-section to provide a projection that protrudes downward.

[0070] Furthermore, the above-mentioned variations may be combined as appropriate. [Industrial applicability]

[0071] The present invention can be used in a dispensing head for dispensing contents by pressing down multiple stems, and in a dispensing device equipped therewith. [Explanation of symbols]

[0072] 1, 200 Two-liquid dispenser (dispenser) 2,210 Aerosol Can (Container) 6, 6a, 6b, 6c, 220 Discharge heads 42. First stem (stem) 43. Second stem (stem) 61,222 nozzles 62 Frame section 62a First vertical wall section (vertical wall section) 62b Second standing wall section (standing wall section) 63 Opening / Closing Section 66, 223 Operation piece 66a, 223a protrusion 67, 222b Receiving surface 210a Stem 221 Case (frame)

Claims

1. A dispensing head provided in a container having multiple stems, each configured to dispense individual contents from each stem, for dispensing contents by pressing down the multiple stems, A frame portion that can be attached to the aforementioned container, A nozzle is provided so as to be movable relative to the frame and configured to push down the plurality of stems when moved downwards, The nozzle is further equipped with an operating piece that is operated by the user when the nozzle is moved downward, The nozzle is provided with passages for contents from the plurality of stems, and is configured such that the contents that have passed through the passages are discharged from the discharge port. The nozzle is provided with a flat receiving surface, and the receiving surface is positioned below the operating piece. The operating piece has a projection that protrudes downward, and is configured so that the projection contacts the receiving surface when the operating piece is operated by the user. When the frame is attached to the container, the plurality of stems are arranged in the width direction of the operating piece. The discharge head is characterized in that the projection is curved in an arc shape such that the central part is located below both ends in the width direction.

2. In the discharge head according to claim 1, The frame portion has a pair of vertical wall portions arranged opposite each other with the operating piece in between, The discharge head is characterized in that the upper ends of the pair of vertical wall portions are positioned above the operating piece.

3. In the discharge head according to claim 1, The nozzle has an opening and closing section for cleaning the passage. The discharge head is characterized in that the operating piece is provided in the opening / closing section.

4. A container having multiple stems, configured to allow individual contents to be dispensed from each stem, The container is provided with a discharge head for pressing down the plurality of stems to dispense the contents, The discharge device is characterized in that the discharge head is the discharge head described in any one of claims 1 to 3.

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