JP2023176263A - Liquid ejector and liquid ejection container - Google Patents

Abstract

To provide a liquid ejector and a liquid ejection container capable of changing a direction of an ejection head while allowing the ejection head to be pushed down during use by passing the ejection head provided on a stem through a gap formed in a mounting cap.SOLUTION: A liquid ejector includes: a pump 4 having a cap 15 and a stem 14 passing through the inside of a guide cylinder 15b provided on the cap 15; and an ejection head 5 connected to the stem 14. The stem 14 includes a plurality of projections 141 arranged around an axis line O at a space in a circumferential direction. The cap 15 includes a plurality of shelf boards 151 that are spaced apart in the circumferential direction around the axis line O and can come into contact with a lower surface f14 of the projection 141, the plurality of shelf boards 151 are arranged so that the projection 141 can pass through when the stem 14 is rotated in the circumferential direction.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a liquid ejector and a liquid ejector container.

In conventional liquid ejectors, for example, a protrusion (protrusion) provided on the outer circumferential surface of a stem (inner cylindrical part of the ejection head) connected to the ejection head is connected to the guide cylinder (first guide part) of the mounting cap (supporting part). ) allows the ejection head to be pushed down by passing through a recess formed on the inner peripheral surface of the stem, while preventing the ejection head from being pushed down by shifting a protrusion provided on the stem in the circumferential direction with respect to the groove. known (for example, see Patent Document 1).

JP2013-237453A

However, in the above-mentioned conventional liquid ejector, the recess formed in the mounting cap is a groove extending in the axial direction, so when the device is used, the protrusion provided on the stem is restrained by the recess formed in the mounting cap. Therefore, it was not possible to change the circumferential direction of the ejection head during use.

An object of the present invention is to provide a liquid ejector and a liquid ejector, in which the direction of the ejection head can be changed while allowing the ejection head to be pushed down during use by passing a protrusion provided on the stem through a gap formed in the mounting cap. Another object of the present invention is to provide a squirt container.

(1) The liquid ejector according to the present invention has a mounting cap that can be attached to the mouth of a container body, and a stem that penetrates the inside of a guide tube provided on the mounting cap, and the stem is pressed down. A liquid ejector comprising: a pump capable of pumping the contents of the container body; and an ejection head connected to the stem and formed with an ejection port for ejecting the contents, the liquid ejector comprising: The stem includes a plurality of protrusions on the outer circumferential surface of the stem, which are spaced apart in the circumferential direction around the axis, and the mounting cap is provided on the inner circumferential surface of the guide cylinder with a plurality of protrusions arranged at intervals in the circumferential direction around the axis. A plurality of shelf boards capable of contacting the lower surface of the protrusion are provided at intervals in the circumferential direction around the axis, and the plurality of shelf boards are configured to contact the lower surface of the stem when the stem is rotated in the circumferential direction. It is arranged so that the protrusion can pass therethrough.

(2) In the liquid ejector of (1) above, the shelf board includes a stopper convex portion that limits rotation of the stem by coming into contact with the protrusion when the stem is rotated in the circumferential direction. Preferably.

(3) In the liquid ejector according to (1) or (2) above, the shelf board includes a locking protrusion that releasably locks the protrusion when the stem is rotated in the circumferential direction. Preferably.

(4) In the liquid ejector of (1) to (3) above, it is preferable that the plurality of shelf boards are arranged so as to be directly below the protrusion when the stem is pulled up.

(5) In the liquid ejector described in (1) to (4) above, the pump may be a foam pump capable of pumping a mixture of the contents and outside air.

(6) A liquid ejecting container according to the present invention includes a container body having a mouth portion and capable of accommodating contents, and a liquid ejecting device according to any one of (1) to (5) above. There is.

According to the present invention, the liquid ejector and liquid ejector are capable of changing the direction of the ejection head while allowing the ejection head to be pushed down during use by passing the protrusion provided on the stem through the gap formed on the mounting cap. A squirt container can be provided.

1 is a side view schematically showing, in partial cross section, a main part of a liquid ejection container according to an embodiment of the present invention, which is equipped with a liquid ejector according to an embodiment of the present invention; is shown in a locked state with the jetting head prevented from being depressed. FIG. 2 is a side view of the liquid ejection container of FIG. 1 in which the ejection head of the liquid ejector is shown in an unlocked state in which it can be pushed down; FIG. 3 is a side view of the liquid ejection container of FIG. 2 in which the ejection head of the liquid ejector is shown in a depressed state; 2 is a sectional view taken along line AA in FIG. 1. FIG. 3 is a sectional view taken along line AA in FIG. 2. FIG.

EMBODIMENT OF THE INVENTION Hereinafter, a liquid ejection container according to an embodiment of the present invention, which is equipped with a liquid ejector according to an embodiment of the present invention, will be described with reference to the drawings.

Here, in the present disclosure, the axis O is the central axis of the liquid ejection container. Further, in the present disclosure, the central axis of the container body and the central axis of the liquid ejector are coaxial with the central axis O of the liquid ejecting container.

In addition, in the present disclosure, the "vertical direction" refers to a direction extending along the axis O. In particular, in this disclosure, the "upper side" refers to the mouth of the container body or the side where the ejection head of the liquid ejector is located, and the "lower side" refers to the bottom of the container body or the side where the ejection head of the liquid ejector is located. This refers to the side on which the cylinder is placed.

Furthermore, in the present disclosure, the direction extending along the axis O is also referred to as the axial direction, and the direction extending around the axis O is also referred to as the circumferential direction. Furthermore, in the following description, the direction perpendicular to the axis O is also referred to as the radial direction. In particular, in the radial direction, the side closer to the axis O is called the radially inner side, and the side farther from the axis O is called the radially outer side.

In FIG. 1, reference numeral 1 indicates a liquid ejection container according to an embodiment of the present invention. The liquid ejection container 1 includes a container main body 2 having a mouth portion 21 and capable of accommodating the contents C, and a liquid ejector 3 capable of ejecting the contents C of the container main body 2.

In the present disclosure, the container body 2 is a so-called bottle container. The container body 2 has a shoulder 22 connected to the mouth 21 and a body 23 connected to the shoulder 22, and the lower end of the body 23 is closed by a bottom (not shown). A storage space S that can accommodate contents C is formed inside the container body 2. The accommodation space S can be filled with a liquid or semi-liquid content C. An opening A2 communicating with the housing space S is formed inside the mouth portion 21. The container body 2 can be formed, for example, by blow molding using synthetic resin. However, the method for manufacturing the container body 2 is not limited to blow molding, and can be manufactured by various methods.

The liquid ejector 3 has a mounting cap 15 that can be attached to the mouth 21 of the container body 2 and a stem 14 that penetrates inside a guide tube 15b provided on the mounting cap 15. The container body 2 includes a pump 4 capable of pumping the contents C of the container body 2 under pressure, and a jetting head 5 in which a jetting port A5 for jetting out the contents C is formed.

In the present disclosure, the pump 4 is a foam pump capable of pumping a mixture of contents C and outside air. The pump 4 has a liquid chamber 4a and an air chamber 4b.

In the present disclosure, the pump 4 includes a cylinder 6, a poppet valve 7, a coil spring 8, a hydraulic piston 9, a piston guide 10, a pneumatic piston 11, a ball valve 12, a foam generating element 13 and a stem 14, a mounting cap 15 and a suction pipe. It is equipped with 16.

The cylinder 6 can be inserted into the container body 2 through an opening A2 formed in the mouth 21 of the container body 2. In the present disclosure, the cylinder 6 includes a liquid chamber cylinder 6a that forms a liquid chamber 4a, and an air chamber cylinder 6b that forms an air chamber 4b. The cylinder 6 can be inserted into an opening A2 formed in the mouth 21 of the container body 2. In this embodiment, the cylinder 6 extends along the axis O. A lower opening A1 is formed at the lower end of the cylinder 6. A suction pipe 16 is connected to the lower opening A1 of the cylinder 6. Therefore, in the present disclosure, the cylinder 6 communicates with the accommodation space S of the container body 2 through the suction pipe 16.

The poppet valve 7 can openably close the lower opening A1 formed in the cylinder 6. The poppet valve 7 operates in the direction of opening the lower opening A1 when the flow of the contents C is introduced into the inside of the cylinder 6 through the lower opening A1, and the poppet valve 7 operates in the direction of opening the lower opening A1, and the contents C introduced into the inside of the cylinder 6. When the liquid is discharged through the lower opening A1, the lower opening A1 is moved in the direction of closing.

The coil spring 8 is arranged inside the liquid chamber cylinder 6a. A coil spring 8 elastically supports a hydraulic piston 9 with respect to the cylinder 6.

The hydraulic piston 9 is arranged inside the liquid chamber cylinder 6a. The hydraulic piston 9 can be slid against the inner peripheral surface of the liquid chamber cylinder 6a. The hydraulic piston 9 forms a liquid chamber 4a together with the poppet valve 7 inside the liquid chamber cylinder 6a. The hydraulic piston 9 is a cylindrical member. An internal passage R1 is formed inside the hydraulic piston 9. The poppet valve 7 can open and close between the liquid chamber 4a and the lower opening A1 or between the liquid chamber 4a and the internal passage R1 by sliding the poppet valve 7.

The piston guide 10 is a cylindrical member. An internal passage R2 is formed inside the piston guide 10. The upper end of the hydraulic piston 9 is fixed inside the piston guide 10.

The pneumatic piston 11 is arranged inside the air chamber cylinder 6b. The pneumatic piston 11 can be slid against the inner peripheral surface of the air chamber cylinder 6b. The pneumatic piston 11 forms an air chamber 4b together with the piston guide 10 inside the air chamber cylinder 6b. The pneumatic piston 11 is a cylindrical member. A piston guide 10 is arranged inside the pneumatic piston 11. The pneumatic piston 11 can be slid against the outer peripheral surface of the piston guide 10. An internal passage R3 is formed between the pneumatic piston 11 and the piston guide 10. The internal passage R3 can be opened and closed by sliding between the pneumatic piston 11 and the piston guide 10. In addition, the pneumatic piston 11 has an outside air inlet A11.

The ball valve 12 is arranged inside the upper end of the piston guide 10. The ball valve 12 is a check valve that is opened by the contents C pumped through the internal passage R2.

The stem 14 penetrates the inside of a guide tube 15b provided on the mounting cap 15 to enable the pistons (9, 11) to be pushed in. In the present disclosure, the liquid ejector 3 includes a hydraulic piston 9 and a pneumatic piston 11 in the piston. The lower end of the stem 14 is fixed to the inner and outer peripheral surfaces of the upper end of the piston guide 10. An internal passage R4 is formed between the upper end of the piston guide 10 and the lower end of the stem 14. Internal passage R4 communicates with internal passage R2 via ball valve 12.

Stem 14 is a cylindrical member. An internal passage R5 is formed inside the stem 14. The internal passage R5 communicates with the internal passage R4 and also communicates with the internal passage R2 via the ball valve 12.

Additionally, inside the stem 14 a foam generating element 13 is arranged. The foam generating element 13 generates the mixture pumped by the operation of the pump 4 into a foamy mixture. In the present disclosure, the foam generating element 13 is formed by a mesh member 13a having a mesh shape and an annular holding member 13b that holds the mesh member 13a. Also, in the present disclosure, two foam generating elements 13 are spaced apart in the axial direction.

Further, in the present disclosure, the stem 14 has a seal cylinder 14a that is slidable relative to the upper end portion of the pneumatic piston 11. The seal cylinder 14a forms a relay space Sa between the pneumatic piston 11 and the stem 14, which communicates with the outside air introduction port A11. The seal cylinder 14a seals the relay space Sa by sliding downward with respect to the pneumatic piston 11 when the stem 14 is pushed down. As a result, outside air is not introduced into the air chamber 4b. Conversely, the seal cylinder 14a opens the relay space Sa by sliding upward with respect to the pneumatic piston 11 when the stem 14 moves upward. Thereby, outside air from the gap formed between the stem 14 and the guide cylinder 15b of the mounting cap 15 can be introduced into the air chamber 4b via the relay space Sa. However, according to the present invention, instead of the above configuration, an outside air inlet is formed in the pneumatic piston 11, and a check valve (not shown) that can be opened by the negative pressure generated in the air chamber 4b is installed in the outside air inlet. can be provided.

The attachment cap 15 is fixed to the upper end of the cylinder 6 and attached to the mouth 21 of the container body 2. The mounting cap 15 covers the upper opening of the cylinder 6 by being fixed to the upper end of the cylinder 6 . That is, in the present disclosure, the mounting cap 15 functions as a pump cover for the pump 4. Furthermore, the mounting cap 15 has a mounting portion 15a that is mounted on the mouth portion 21 of the container body 2. In the present disclosure, the mounting cap 15 is mounted by screwing the mounting portion 15a onto the opening 21 of the container body 2. The guide tube 15b extends in the axial direction and is connected to the mounting portion 15a. A through hole A15 extending in the axial direction is formed inside the guide tube 15b. The stem 14 passes through the through hole A15. As a result, the upper end of the stem 14 protrudes above the mounting cap 15 through the through hole A15. In the present disclosure, the liquid ejector 3 further includes a sealing member 17. The seal member 17 is, for example, an annular seal member such as an O-ring. The sealing member 17 provides a fluid-tight seal between the liquid ejector 3 and the container body 2.

The ejection head 5 has an ejection port A5 and is connected to the stem 14. In the present disclosure, the ejection head 5 includes a top wall 51 that can be pressed downward, a connection tube 52 that hangs down from the top wall 51 and can be connected to the stem 14, and a connection tube 52 that hangs down from the top wall 51 and connects the connection tube 52. A cover cylinder 53 that surrounds the guide cylinder 15b and has a larger inner diameter than the guide cylinder 15b is provided.

In the present disclosure, the ceiling wall 51 is a plate-shaped ceiling wall. In this embodiment, the top wall 51 has a circular shape when viewed from the axial direction. However, the shape of the top wall 51 when viewed in the axial direction is not particularly limited to a circular shape as long as the shape allows the user to push down the ejection head 5.

An internal passage R6 is formed inside the connecting tube 52. The upper end of the stem 14 is fixed inside the connecting tube 52. The internal passage R6 thereby communicates with the internal passage R5 via the foam generating element 13. Further, the ejection head 5 is formed with an internal passage R7 communicating with the internal passage R6. The internal passage R7 communicates with the outside world through the spout A5.

In the present disclosure, the ejection head 5 further includes a nozzle 56. The nozzle 56 projects further outward than the cover cylinder 53 in the axial direction. In the present disclosure, the internal passage R7 is formed inside the nozzle 56.

Further, in the present disclosure, the cover cylinder 53 is formed with an air hole A53 that penetrates the cover cylinder 53 at a position close to the top wall 51. Further, the cover tube 53 is formed with a thin wall portion 53a extending downward from the air hole A53.

The pump 4 is operated by repeatedly pushing down the ejection head 5 and releasing the depression of the ejection head 5. Here, in the present disclosure, the pump 4 has the state shown in FIG. 2 as its initial state. The initial state of the pump 4 shown in FIG. 2 is a state in which the protrusion 141 of the stem 14 is located below the shelf plate 151 of the mounting cap 15, as will be described later. From the initial state shown in FIG. 2, the pump 4 first brings the liquid chamber 4a and the air chamber 4b into a negative pressure state by pushing down the ejection head 5, as shown in FIG. Next, when the ejection head 5 is released from being pressed down, it returns to the initial state shown in FIG. Outside air (air) is introduced into the chamber 4b. Thereafter, as shown in FIG. 3, when the ejection head 5 is pushed down again, the contents C introduced into the liquid chamber 4a and the air introduced into the air chamber 4b are pumped toward the stem 14, respectively. Inside the stem 14, the contents C and air pass through the foam generating element 13 in a mixed state. Thereby, the mixture of content C and air is ejected from the ejection port A5 of the ejection head 5 as a foamy mixture.

Here, the liquid ejector 3 according to the present disclosure is provided with a locking mechanism L that locks the ejection head 5 so that the ejection head 5 is not pushed down during distribution, such as transportation and sales. .

The locking mechanism L includes a protrusion 141 provided on the stem 14 and a shelf plate 151 provided on the mounting cap 15. In the locking mechanism L, the protrusion 141 of the stem 14 is arranged above the shelf board 151 of the mounting cap 15, so that when the stem 14 is pushed down, the protrusion 141 of the stem 14 is placed above the shelf board 151 of the mounting cap 15. contact with. Thereby, the lock mechanism L prevents the stem 14 from being pushed down.

Further, as will be described later, the locking mechanism L rotates the stem 14 in the circumferential direction to prevent the protrusion 141 of the stem 14 from coming into contact with the shelf plate 151 of the mounting cap 15 when the stem 14 is pushed down. be able to. Thereby, the locking mechanism L allows the stem 14 to be pushed down.

Referring to FIG. 5, the stem 14 includes a plurality of protrusions 141 arranged on the outer peripheral surface of the stem 14 at intervals in the circumferential direction around the axis. Note that the position of the AA cross section in FIG. 5 is the same axial position as the AA cross section in FIG. 4.

In the present disclosure, the protrusion 141 is formed on the outer peripheral surface of the seal cylinder 14a of the stem 14, as shown in FIG. Further, in the present disclosure, the protrusion 141 is a plate-shaped protrusion that protrudes outward in the radial direction and extends in the circumferential direction. Specifically, as shown in FIG. 5, when viewed in the axial direction, the protrusion 141 has two radially extending side edges 141a arranged at intervals in the circumferential direction, and two radially extending side edges 141a arranged at intervals in the circumferential direction. It is formed by one circumferentially extending side edge 141b that continues to the radially outer end of 141a. The two radially extending side edges 141a each extend in the radial direction, and the circumferentially extending side edge 141b extends in the circumferential direction. In this case, as will be described later, a large contact area can be ensured when the mounting cap 15 contacts the shelf board 151. However, the shape of the protrusion 141 is not limited to a plate-like shape.

In the present disclosure, the stem 14 includes three protrusions 141. The three protrusions 141 are arranged at equal intervals (120 degrees) in the circumferential direction around the axis O. However, the number of protrusions 141 can be two or more.

On the other hand, the mounting cap 15 is provided with a plurality of shelf boards 151 at intervals in the circumferential direction on the inner circumferential surface of the guide tube 15b, which can contact the lower surface f14 of the protrusion 141 of the stem 14. The plate 151 is arranged so that the protrusion 141 of the stem 14 can pass through the plate 151 when the stem 14 is rotated in the circumferential direction.

In the present disclosure, as shown in FIG. 1, the shelf board 151 is disposed at a position below the protrusion 141 of the stem 14 in a locked state in which the stem 14 is prevented from being pushed down. Further, in the present disclosure, the shelf board 151 is a plate-shaped protrusion that projects inward in the radial direction and extends in the circumferential direction, as shown in FIG. Specifically, as shown in FIG. 5, when viewed in the axial direction, the shelf board 151 has two radially extending side edges 151a arranged at intervals in the circumferential direction, and two radially extending side edges 151a arranged at intervals in the circumferential direction. It is formed by one circumferentially extending side edge 151b that is continuous with the radially outer end of the edge 151a. The two radially extending side edges 151a each extend in the radial direction, and the circumferentially extending side edge 151b extends in the circumferential direction. Also in this case, similarly to the protrusion 141 of the stem 14, a large contact area can be ensured when contacting with the protrusion 141 of the stem 14. However, the shape of the shelf board 151 is also not limited to a plate-like shape.

In the present disclosure, the mounting cap 15 also includes three shelves 151. The three shelf boards 151 are arranged at equal intervals (120 degrees) in the circumferential direction around the axis O. However, the number of shelf boards 151 can also be two or more.

As shown in FIG. 5, when the circumferential width of one protrusion 141 is W1 and the circumferential interval between two shelf boards 151 adjacent to each other in the circumferential direction is S2, in the present disclosure, one protrusion 141 The circumferential width W1 of is narrower than the circumferential spacing S2 between the two shelf boards 151. As a result, a gap is formed between the plurality of shelf boards 151, as shown in FIG. 5, through which the protrusion 141 of the stem 14 can pass.

As shown in FIG. 5, if the position of the protrusion 141 of the stem 14 is aligned with the position of the gap (S2) formed between the shelf boards 151, the protrusion 141 of the stem 14 will be aligned with the position of the gap (S2) formed between the shelf boards 151. It can pass through the gap (S2). Therefore, by aligning the position of the protrusion 141 of the stem 14 with the position of the gap (S2) formed between the shelf boards 151, the movement of the stem 14 in the axial direction (vertical direction) is always ensured.

In addition, since the gap (S2) through which the protrusion 141 of the stem 14 is passed is formed between the plurality of shelf boards 151, the protrusion 141 of the stem 14 is passed through the gap (S2) formed between the shelf boards 151. After passing through, there is no part around the protrusion 141 of the stem 14 that restricts the protrusion 141 of the stem 14 in the circumferential direction. Therefore, after the protrusion 141 of the stem 14 passes through the gap (S2) formed between the shelf boards 151, the stem 14 can be freely rotated in the circumferential direction. In addition, in the present disclosure, the shelf board 151 is arranged at a position above the protrusion 141 of the stem 14 in the unlocked state in which the stem 14 can be pushed down, as shown in FIG. That is, in the present disclosure, the unlocked state is the initial state of the pump 4.

Next, FIG. 4 shows a state in which the stem 14 of FIG. 5 is pulled out upward and rotated in the circumferential direction. After passing the protrusion 141 of the stem 14 through the gap (S2) formed between the shelf boards 151, if the stem 14 is rotated in the circumferential direction, the protrusion 141 of the stem 14 can be attached as shown in FIG. It can be placed directly above the shelf board 151 (top surface f15) of the cap 15. Thereby, when the stem 14 is pushed in, the protrusion 141 of the stem 14 can be brought into contact with the shelf plate 151 of the mounting cap 15.

In the present disclosure, the shelf board 151 includes a stopper protrusion 152 that limits rotation of the stem 14 by coming into contact with the protrusion 141 when the stem 14 is rotated in the circumferential direction. In this case, by simply rotating the stem 14, the stem 14 can be brought into a locked state where it is prevented from being pushed down.

Specifically, the stopper convex portion 152 is a convex portion that protrudes upward from the upper surface f15 of the shelf board 151. In this case, the stopper convex portion 152 comes into contact with the protrusion 141 of the stem 14 in the circumferential direction when the stem 14 is rotated. Thereby, the user can position the protrusion 141 of the stem 14 at the position of the shelf plate 151 of the mounting cap 15 without finely adjusting the amount of rotation of the stem 14. Therefore, in this case, the stem 14 can be easily prevented from being pushed down by a simple operation of rotating the stem 14.

In particular, in the present disclosure, each of the stopper protrusions 152 is arranged to coincide with an edge of one side in the circumferential direction of the shelf board 151 (in FIG. 4, the clockwise side around the axis O). Referring to FIG. 4, for example, when the stem 14 is rotated to one side in the circumferential direction, the protrusion 141 of the stem 14 is positioned above the shelf board 151 and the stopper protrusion 152 come into contact with. As a result, the stem 14 is prevented from being pushed down by the contact between the protrusion 141 of the stem 14 and the shelf board 151. On the other hand, when the stem 14 is rotated to the other side in the circumferential direction (in FIG. 4, the counterclockwise side around the axis O), the protrusion 141 of the stem 14 closes the gap formed between the shelf boards 151. In the state located above (S2), it comes into contact with the stopper convex portion 152 of the other shelf board 151. Thereby, the stem 14 can be pushed down by the protrusion 141 of the stem 14 passing through the gap (S2) formed between the shelf boards 151. Therefore, in this case, by simply changing the direction of rotation of the stem 14, it is possible to easily select between a locked state in which the stem 14 is prevented from being pushed down and an unlocked state in which the locked state is released. .

Further, in the present disclosure, the shelf board 151 includes a locking convex portion 153 that releasably locks the protrusion 141 when the stem 14 is rotated in the circumferential direction. In this case, the locked state that prevents the stem 14 from being pushed down can be stably maintained.

Specifically, the locking convex portion 153 is a convex portion that protrudes from the inner peripheral surface of the guide tube 15b (stem 14). In the present disclosure, the locking convex portion 153 is a curved surface when viewed in the axial direction, as shown in FIG. 4 and the like. In this case, when the stem 14 is rotated from the state shown in FIG. It can be climbed over and moved in the circumferential direction. That is, the stem 14 can be rotated in the circumferential direction even after the protrusion 141 has gotten over the locking convex portion 153. Thereafter, as shown in FIG. 4, of the two corner side edges 141d of the protrusion 141 of the stem 14, the corner side edge 141d adjacent to the locking protrusion 153 is caught on the locking protrusion 153, and the corresponding It is locked by the locking protrusion 153. As a result, the protrusion 141 of the stem 14 is positioned between the stopper protrusion 152 and the locking protrusion 153. Therefore, in this case, the locked state that prevents the stem 14 from being pushed down can be stably maintained. On the other hand, when the stem 14 is rotated in the opposite direction, the protrusion 141 of the stem 14 again gets over the locking protrusion 153, so that the lock of the protrusion 141 of the stem 14 is released. In this case, the stem 14 can be pushed down again.

In addition, if FIG. 5 is referred, in this indication, the base side edge 141c of the protrusion 141 is a part continuous to the radially extending side edge 141a of the protrusion 141 and the stem 14 (seal cylinder 14a). As shown in FIG. 5, the base side edge 141c of the protrusion 141 is a curved surface when viewed in the axial direction. In this case, local contact (uneven contact) with the shelf board 151 provided on the mounting cap 15 can be reduced. Further, in the present disclosure, the corner side edge 141d of the protrusion 141 is also a curved surface when viewed in the axial direction, as shown in FIG. In this case as well, local contact (uneven contact) with the shelf board 151 provided on the mounting cap 15 can be reduced.

Moreover, if FIG. 5 is referred, in this indication, the base side edge 151c of the shelf board 151 is a part continuous to the radially extending side edge 151a of the shelf board 151 and the guide cylinder 15b (installation cap 15). As shown in FIG. 5, the base side edge 151c of the shelf board 151 is also a curved surface when viewed in the axial direction. In this case, local contact (uneven contact) between the stem 14 and the protrusion 141 can be reduced. Furthermore, in the present disclosure, the corner side edge 151d of the shelf board 151 is also a curved surface when viewed in the axial direction, as shown in FIG. In this case as well, local contact (uneven contact) between the stem 14 and the protrusion 141 can be reduced.

Furthermore, with reference to FIG. 5, in the present disclosure, the base side edge 152c of the stopper convex portion 152 is connected to the circumferentially extending side edge 152a of the stopper convex portion 152 (the contact portion with the protrusion 141 of the stem 14) and the mounting cap. 15 (guide tube 15b). As shown in FIG. 5, the base side edge 152c of the stopper convex portion 152 is also a curved surface when viewed in the axial direction. In this case as well, local contact (uneven contact) between the stem 14 and the protrusion 141 can be reduced. Further, in the present disclosure, the corner side edge 152d of the stopper convex portion 152 is also a curved surface when viewed in the axial direction, as shown in FIG. In this case as well, local contact (uneven contact) between the stem 14 and the protrusion 141 can be reduced.

In particular, referring to FIG. 1, in the present disclosure, the plurality of shelf boards 151 are arranged to be directly below the protrusion 141 when the stem 14 is pulled up. In this case, even if the stem 14 is rotated in the circumferential direction around the axis O, the lock mechanism L will not be locked until the stem 14 is pulled up again after the lock mechanism L is unlocked. Therefore, in this case, the user can comfortably take out the contents C without worrying about the locking mechanism L malfunctioning.

Generally, liquid ejectors for containers are formed by assembling multiple components. For this reason, the liquid ejector usually has a structural play (assembly allowance) that allows the stem 14 to be pulled upward slightly relative to the initial position of the stem 14. Here, the initial position of the stem 14 refers to the position of the stem 14 in the initial state of the pump 4 shown in FIG. The initial position of the stem 14 can be set, for example, based on the relationship between the elastic force of the coil spring 8 and the sliding resistance generated between the cylinder 6 and the sliding members (hydraulic piston 9 and pneumatic piston 11). can. Note that in the present disclosure, the sliding area of the pneumatic piston 11 is larger than the sliding area of the hydraulic piston 9. Therefore, in the present disclosure, the setting of the initial position of the stem 14 is influenced more by the pneumatic piston 11 than by the hydraulic piston 9.

The liquid ejector 3 of the present disclosure utilizes this play. Specifically, the height of the shelf board 151 is adjusted so that the shelf board 151 is placed at a position below the position of the protrusion 141 of the stem 14 when the stem 14 is pulled up by this amount of play. The position (position in the axial direction) is set. As a result, if the stem 14 is rotated after being pulled upward and passed through the gap (S2) formed between the shelf boards 151, when the stem 14 is pushed in, 141 of the stem 14 is attached to the mounting cap. It can be brought into contact with 15 shelf boards 151. This allows a locked state in which the stem 14 is prevented from being pushed down.

On the other hand, if the stem 14 is reversely rotated from the locked state where the stem 14 is prevented from being pushed down, the protrusion 141 of the stem 14 can be passed through the gap (S2) formed between the shelf boards 151 again. can. After passing the protrusion 141 of the stem 14 through the gap (S2) formed between the shelf boards 151, the position of the stem 14 is changed to the initial position (the protrusion 141 of the stem 14 is located between the shelf boards 151 and 151), as shown in FIG. 151). Thereby, the stem 14 can be freely moved in both the axial direction and the circumferential direction without being interfered with by the shelf board 151 of the mounting cap 15. Therefore, in this case, the user can comfortably take out the contents C without worrying about the locking mechanism L malfunctioning.

In the present disclosure, the pump 4 is a foam pump capable of pumping a mixture of contents C and outside air. In the case of a foam pump, the pistons include two pistons, a hydraulic piston 9 and a pneumatic piston 11. For this reason, in the foam pump, the stem 14 is provided with a seal cylinder 14a for holding the pneumatic piston 11. Therefore, if a foam pump is used as the pump 4 of the liquid ejector 3, the locking mechanism L can be relatively easily provided on the stem 14 and the guide tube 15b of the mounting cap 15. However, the pump 4 is not limited to a foam pump that can eject foamy liquid by mixing air as in the present disclosure. The pump 4 can also include a pump that can eject liquid as it is without mixing air. In this case as well, the above-mentioned locking mechanism L can be employed as in the case of the foam pump. In addition, also in this case, the initial position of the stem 14 is set based on the relationship between, for example, the elastic force of the coil spring 8 and the sliding resistance generated between the cylinder 6 and the sliding member (hydraulic piston). can do.

As described above, the liquid ejector 3 of the present disclosure releases the locked state that prevents the stem 14 from being pushed down by passing the protrusion 141 provided on the stem 14 through the gap (S2) formed in the mounting cap 15. However, the gap (S2) formed in the mounting cap 15 is a gap (S2) formed between the plurality of shelf boards 151 formed in the mounting cap 15. Therefore, after the protrusion 141 of the stem 14 passes through the gap (S2) formed between the plurality of shelf boards 151, the ejection head 5 can freely rotate around the axis O together with the stem 14 in the circumferential direction. I can do it. Therefore, according to the present invention, as described above, by passing the protrusion 141 provided on the stem 14 through the gap (S2) formed in the mounting cap 15, the ejection head 5 can be pushed down during use, while the ejection head It is possible to provide a liquid ejector 3 and a liquid ejecting container 1 in which the direction of the liquid ejector 5 can be changed.

Although the liquid ejector and liquid ejecting container according to one embodiment of the present invention have been described above, the present invention is not limited to the above embodiment, and within the scope of the claims. It can be changed in various ways. For example, in the embodiments described above, the liquid ejector and the liquid ejecting container are preferably used in areas around water such as a kitchen, a sink, and a bathroom. Contents C include liquid soap, detergent, cosmetics, and the like.

1: Foam ejection container, 2: Container body, 21: Mouth, 3: Ejector, 4: Pump, 4a: Liquid chamber, 4b: Air chamber, 5: Ejection head, 51: Top wall, 52: Connection tube, 53: Cover cylinder, 53a: Thin wall part, A53: Air hole, 54: Intermediate cylinder, 55: Outer cylinder, 56: Nozzle, 6: Cylinder, 6a: Liquid chamber cylinder, 6b: Air chamber cylinder, 7: Poppet valve, 8: Coil spring, 9: Hydraulic piston, 10: Piston guide, 11: Pneumatic piston, 12: Ball valve, 13: Foam generating element, 14: Stem, 14a: Seal cylinder, 15: Mounting cap, 15a: Mounting part , 15b: guide tube, 16: suction pipe, 17: sealing member, A1: lower end opening formed at the lower end of cylinder 6, A2: opening formed at the mouth of the container body, A5: spout, A11: outside air Inlet, A15: Through hole, R1: Internal passage of hydraulic piston, R2: Internal passage of piston guide, R3: Internal passage between pneumatic piston and piston guide, R4: Internal passage between piston guide and stem. Passage, R5: Internal passage of stem, R6: Internal passage of connecting tube, R7: Internal passage of nozzle, Sa: Relay space, 141: Projection (lock mechanism), 141a: radially extending side edge of projection, 141b: Circumferentially extending side edge of the protrusion, 141c: Base side edge of the protrusion, 141d: Corner side edge of the protrusion, 151: Shelf (locking mechanism), 151a: Radially extending side edge of the shelf, 151b: Shelf Circumferentially extending side edge of plate, 151c: Base side edge of shelf board, 151d: Corner side edge of shelf board, 152: Stopper protrusion, 152a: Circumferentially extending side edge of stopper protrusion (protrusion of stem) 153: Locking protrusion, C: Contents, f14: Lower surface of protrusion, f15: Upper surface of shelf, L: Locking mechanism, S2: Circumferential distance between two shelves ( gap formed between the plates), W1: circumferential width of the protrusion

Claims (6)

A pump having a mounting cap that can be attached to the mouth of a container body and a stem penetrating the inside of a guide cylinder provided on the mounting cap, and capable of pumping the contents of the container body by pushing down the stem. , an ejection head connected to the stem and formed with an ejection port for ejecting the content, the liquid ejector comprising:
The stem includes a plurality of protrusions on the outer circumferential surface of the stem, the protrusions being spaced apart in the circumferential direction around the axis;
The mounting cap is provided with a plurality of shelf boards that are spaced apart in the circumferential direction around the axis and that are capable of contacting the lower surface of the protrusion of the stem on the inner peripheral surface of the guide tube, and the plurality of shelf boards The liquid ejector is arranged to allow the liquid to pass through the protrusion of the stem when the stem is rotated in a circumferential direction. The liquid ejector according to claim 1, wherein the shelf board includes a stopper protrusion that limits rotation of the stem by coming into contact with the protrusion when the stem is rotated in the circumferential direction. The liquid ejector according to claim 1, wherein the shelf board includes a locking protrusion that releasably locks the protrusion when the stem is rotated in a circumferential direction. The liquid ejector according to claim 1, wherein the plurality of shelf boards are arranged so as to be directly below the protrusion when the stem is pulled up. The liquid ejector according to claim 1, wherein the pump is a foam pump capable of pumping a mixture of the contents and outside air. A liquid ejecting container comprising a container body having a mouth portion and capable of accommodating contents, and a liquid ejecting device according to any one of claims 1 to 5.