Trigger-type liquid ejector

Abstract

To provide a trigger type liquid ejector which can eject large amounts of liquid.SOLUTION: A trigger type liquid ejector comprises: an ejector body which is attached to a container body for accommodating a liquid; a nozzle member which is provided in the front of the ejector body, and in which an ejection hole for ejecting the liquid forward is formed; and an opening / closing mechanism which switches between an open state that the interior of an accumulation cylinder is opened to the exterior through the ejection hole and a blocked state that communication between the interior of the accumulation cylinder and the exterior through the ejection hole is blocked.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a trigger-type liquid ejector. [Background technology]

[0002] A trigger-type liquid ejector has been disclosed that includes a vertical supply tube section that extends in the vertical direction, a nozzle member with an ejection hole that ejects liquid forward, and a trigger mechanism that causes the liquid in the vertical supply tube section to flow toward the ejection hole (see, for example, Patent Document 1 below). The trigger mechanism includes a cylinder that communicates with the inside of the vertical supply tube section, and a piston that slides back and forth on the inner circumferential surface of the cylinder as the trigger section moves back and forth. With this configuration, when the trigger part is pulled backward, the piston pressurizes the cylinder, causing the liquid in the cylinder to flow through the vertical supply tube part toward the nozzle hole. This causes the liquid to be sprayed through the nozzle hole. Meanwhile, as the trigger part returns to its forward position, the pressure in the cylinder is reduced, causing the liquid in the container body to be sucked up into the vertical supply tube part. The liquid sucked up into the vertical supply tube part flows into the cylinder. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 3781904 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned prior art, the amount of liquid that could be ejected in response to a single operation of the trigger was limited to the amount corresponding to the stroke of the trigger (piston). Therefore, there is still room for improvement in terms of ejecting a large amount of liquid.

[0005] The present invention provides a trigger-type liquid ejector capable of ejecting large amounts of liquid. [Means for solving the problem]

[0006] In order to solve the above problems, the present disclosure employs the following aspects. A trigger-type liquid ejector according to one aspect of the present disclosure comprises a ejector body attached to a container body that contains liquid, and a nozzle member provided in front of the ejector body and having an ejection hole formed therein for ejecting liquid forward, the ejector body extending in the vertical direction and having a vertical supply tube portion that sucks up liquid from within the container body, and a trigger portion disposed in front of the vertical supply tube portion so as to be movable rearward in a forward biased state, and which causes liquid to flow from within the vertical supply tube portion towards the ejection hole by the rearward movement of the trigger portion, and a trigger mechanism provided between the vertical supply tube portion and the nozzle member and configured to The device comprises a storage cylinder into which liquid that has passed through the vertical supply tube section is supplied as the trigger section moves rearward, and a storage plunger that is arranged within the storage cylinder so as to be movable in a first axial direction along the central axis of the storage cylinder, and that moves toward one side of the first axial direction as liquid is supplied into the storage cylinder and is forced toward the other side of the first axial direction, and is equipped with an opening / closing mechanism that switches between an open state in which the inside of the storage cylinder is open to the outside through the ejection hole and a closed state in which communication between the inside of the storage cylinder and the outside through the ejection hole is blocked.

[0007] According to this aspect, by operating the trigger while the reservoir cylinder is in a blocked state, liquid can be stored in the reservoir cylinder. After storing liquid in the reservoir cylinder, the reservoir cylinder can be opened, allowing the liquid to be ejected in an amount greater than the amount corresponding to the stroke of the trigger. As a result, a large amount of liquid can be ejected.

[0008] In the trigger-type liquid ejector of the above aspect, it is preferable that the ejector body has an ejection tube portion extending from the storage cylinder toward the nozzle member, and the opening / closing mechanism has a first communication port that can communicate with the inside of the ejection tube portion and a second communication port that communicates with the ejection hole, a connecting tube portion that connects between the ejection tube portion and the nozzle member, and a valve body that can open and close the first communication port. According to this aspect, since the opening and closing mechanism is provided between the storage cylinder and the nozzle member, it is possible to prevent the liquid from reaching the ejection hole when the storage cylinder is in the blocked state, thereby preventing the liquid from unexpectedly ejecting when the storage cylinder is in the blocked state.

[0009] In the trigger-type liquid ejector of the above aspect, it is preferable that the connecting tube portion is fixed to the nozzle member and is configured to be movable in a second axial direction along the central axis of the injection tube portion, and that the valve body opens and closes the first communication port in accordance with movement of the connecting tube portion and the nozzle member in the second axial direction relative to the injection tube portion. According to this aspect, the position of the nozzle member in the second axial direction differs between the open state and the closed state of the storage cylinder, making it easier to determine whether the storage cylinder is in the open state or the closed state.

[0010] In the above aspect, it is preferable that the opening and closing mechanism includes an operating unit provided on the ejector body so as to be rotatable around the central axis of the injection tube portion, the connecting tube portion and the nozzle member are configured to be movable in the second axial direction relative to the operating unit as the operating unit is rotated, and the operating unit includes a regulating unit that regulates movement of the connecting tube portion and the nozzle member in the second axial direction from the open state to the closed state. According to this aspect, the restricting portion restricts the movement of the connecting tube portion and the nozzle member in the second axial direction, so that the trigger can be operated while maintaining the open state. In this case, it is possible to eject liquid in ejection modes other than large-volume ejection (normal ejection mode, continuous ejection mode, etc.), thereby improving convenience.

[0011] In the trigger-type liquid ejector of the above aspect, it is preferable that the storage cylinder has a communication hole that communicates with the ejection hole, the storage plunger is configured to be able to open and close the communication hole as it moves in the first axial direction relative to the storage cylinder, and the storage plunger has a communication flow path that connects the inside of the storage cylinder with the ejection hole when the communication hole is blocked. According to this aspect, by operating the trigger with the storage cylinder in an open state, the liquid flowing through the vertical supply tube is ejected from the ejection hole through the communication flow path. This allows the amount of liquid to be ejected according to the stroke of the trigger, thereby improving usability. [Effects of the Invention]

[0012] According to the present invention, a large amount of liquid can be ejected. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a vertical cross-sectional view of a trigger-type liquid ejector according to a first embodiment. FIG. [Figure 2] FIG. 2 is an enlarged view of a portion of FIG. [Figure 3] 1 is a cross-sectional view of a trigger-type liquid ejector according to a first embodiment. FIG. [Figure 4] 3A to 3C are explanatory diagrams illustrating the operation of the trigger-type liquid ejector according to the first embodiment. [Figure 5] 3A to 3C are explanatory diagrams illustrating the operation of the trigger-type liquid ejector according to the first embodiment. [Figure 6] 3A to 3C are explanatory diagrams illustrating the operation of the trigger-type liquid ejector according to the first embodiment. [Figure 7] FIG. 10 is a vertical cross-sectional view of a trigger-type liquid ejector according to a second embodiment. [Figure 8] 10A to 10C are explanatory diagrams illustrating the operation of the trigger-type liquid ejector according to the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0014] (First embodiment) Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this embodiment, a jetting container in which a trigger-type liquid jetter 1 is attached to a container body A will be described as an example. The trigger-type liquid ejector 1 shown in Figure 1 comprises an ejector body 2, a nozzle member 4 attached to the ejector body 2 and having an ejection hole 3 for ejecting liquid, an opening / closing mechanism 5 attached to the ejector body 2 and switching between ejection and blocking of liquid through the ejection hole 3, and a cover body C that covers the ejector body 2.

[0015] The ejector body 2 has a vertical supply tube section 10, an attachment cap 11, a connecting tube 12, a storage pump section 13, an injection tube section 14, a trigger mechanism 16 having a main pump section 15, and a joint section 17.

[0016] In this embodiment, the central axis of the vertical supply tube portion 10 is referred to as the axis O. The direction along the axis O is referred to as the vertical direction, and in the vertical direction, the container body A side is referred to as the lower side, and the opposite side is referred to as the upper side. When viewed from the vertical direction, a direction intersecting the axis O is referred to as the front-rear direction L1, and a direction perpendicular to both the up-down direction and the front-rear direction L1 is referred to as the left-right direction L2. In the front-rear direction L1, the nozzle member 4 side is referred to as the front side, and the opposite side is referred to as the rear side.

[0017] The vertical supply tube 10 is shaped like a multi-stage tube, with the diameter decreasing as it extends upward. Specifically, the vertical supply tube 10 has a small diameter section 10a located at the top and a large diameter section 10c connected to the lower side of the small diameter section 10a via a stepped section 10b. The vertical supply tube 10 is shaped like a double tube.

[0018] The large diameter portion 10c is provided with a flange portion 10d that protrudes outward in the radial direction (the direction intersecting the axis O when viewed from the top-bottom direction). A ball valve 21 is provided within the small diameter portion 10a. The ball valve 21 is provided so as to be able to approach and separate from a lower valve seat 10f provided in the small diameter portion 10a from above the lower valve seat 10f. The ball valve 21 switches between communication and blocking between the inside of the container body A and the main pump section 15 through the inside of the small diameter portion 10a. Specifically, the ball valve 21 is a check valve that blocks communication between the inside of the container body A and the main pump section 15 when pressurization is performed by the main pump section 15 (main cylinder 51, described later), and allows communication between the inside of the container body A and the main pump section 15 when depressurization is performed by the main pump section 15.

[0019] A pipe 23 is provided in the vertical supply tube portion 10. The pipe 23 is fitted into the small diameter portion 10a from below through the inside of the large diameter portion 10c. When the trigger-type liquid ejector 1 is attached to the container body A, the pipe 23 extends downward within the container body A.

[0020] The attachment cap 11 is formed in a cylindrical shape extending in the vertical direction. The attachment cap 11 is detachably fastened to the mouth portion A1 of the container body A with the flange portion 10d sandwiched between the attachment cap 11 and the upper opening edge of the mouth portion A1 via a packing. Note that the attachment cap 11 and the mouth portion A1 may be fixed together by a method other than screws (for example, by fitting).

[0021] The connecting cylinder 12 extends forward from the upper end of the small diameter portion 10a. A blocking plug 28 is attached to the front end opening of the connecting cylinder 12. The blocking plug 28 blocks the front end opening of the connecting cylinder 12. A storage valve 29 is provided in the small diameter portion 10a in a portion located above the ball valve 21. The storage valve 29 is provided so as to be movable toward and away from an upper valve seat 10g provided in the small diameter portion 10a from above the upper valve seat 10g. The storage valve 29 switches between communication between the main pump portion 15 and the storage pump portion 13 via the connecting tube 12 and the vertical supply tube portion 10. Specifically, the storage valve 29 is a check valve that allows liquid to be supplied from the vertical supply tube portion 10 to the storage pump portion 13 (a storage cylinder 31 described below) when the main pump portion 15 is pressurized, and that restricts the outflow of liquid from the storage pump portion 13 into the vertical supply tube portion 10.

[0022] The reservoir pump section 13 includes a reservoir cylinder 31 , a reservoir plunger 32 , and a biasing member 33 . The storage cylinder 31 is provided above the vertical supply tube section 10. The storage cylinder 31 has a front wall section 31a located at the front end and a cylinder tube 31b extending rearward from the outer periphery of the front wall section 31a, and is formed in a topped cylinder shape that opens rearward. In this embodiment, the central axis of the storage cylinder 31 (cylinder tube 31b) is referred to as the axis O1. In this embodiment, the axis O1 extends in the front-rear direction L1. That is, in this embodiment, the front-rear direction L1 corresponds to an axial direction (first axial direction) along the axis O1. In this embodiment, the rear side corresponds to one side of the axial direction along the axis O1. In addition, in this embodiment, the front side corresponds to the other side of the axial direction along the axis O1. However, the axial direction along the axis O1 does not have to coincide with the front-rear direction L1.

[0023] A supply hole 31c is formed in the front end of the cylinder 31b and the front end of the connecting cylinder 12. The supply hole 31c passes through the lower part of the cylinder 31b and the upper part of the connecting cylinder 12 in the vertical direction. The supply hole 31c connects the inside of the storage cylinder 31 with the inside of the connecting cylinder 12. A spring receiving member 35 is fitted into the rear end opening of the cylinder 31b. A communication hole 31d is formed in the front wall portion 31a, penetrating the front wall portion 31a in the front-rear direction L1. The communication hole 31d is disposed coaxially with the axis O1.

[0024] The storage plunger 32 is provided so as to be movable in the front-to-rear direction L1 within the storage cylinder 31. The storage plunger 32 is formed in a cylindrical shape with a top that opens toward the rear. Specifically, the storage plunger 32 has a blocking wall 32a located at the front end and a sliding cylinder 32b that extends rearward from the outer circumferential edge of the blocking wall 32a, and is formed in a cylindrical shape with a top that opens toward the rear. The storage plunger 32 moves back and forth within the storage cylinder 31 with the outer circumferential surface of the sliding cylinder 32b sliding on the inner circumferential surface of the cylinder 31b, causing the blocking wall 32a to approach and move away from the front wall portion 31a from the rear.

[0025] The blocking wall 32a is formed in a disk shape coaxial with the axis O1 when viewed from the front-rear direction L1. The blocking wall 32a includes, in a first radial direction (a direction intersecting the axis O1 when viewed from the front-rear direction L1), an opposing portion 32a1 located at the outer periphery and a bulging portion 32a2 located at the center.

[0026] 2, the facing portion 32a1 faces the front wall portion 31a in the front-rear direction L1. The facing portion 32a1 is formed with relief grooves (communication flow paths) 32a3. The relief grooves 32a3 are formed radially with respect to the axis O1 on the front surface of the facing portion 32a1. The bulging portion 32a2 bulges forward relative to the opposing portion 32a1. The bulging portion 32a2 is formed in a tapered shape such that the outer diameter gradually decreases as it extends forward. The bulging portion 32a2 abuts against the opening edge of the communication hole 31d when the opposing portion 32a1 abuts against the front wall portion 31a. A communication groove (communication flow path) 32a4 is formed on the outer peripheral surface of the bulging portion 32a2. The communication groove 32a4 extends in the front-rear direction L1 on the outer peripheral surface of the bulging portion 32a2. The front end opening of the communication groove 32a4 opens inside the communication hole 31d. The rear end opening of the communication groove 32a4 communicates with the relief groove 32a3. That is, in a state where the blocking wall 32a abuts against the front wall portion 31a (a state where the communication hole 31d is blocked), the communication groove 32a4 constantly communicates the inside of the storage cylinder 31 with the inside of the injection tube portion 14. Note that the communication groove 32a4 is not an essential component.

[0027] 1, the biasing member 33 is provided behind the storage plunger 32. The biasing member 33 is interposed between the storage plunger 32 and the spring receiving member 35, and biases the storage plunger 32 forward.

[0028] The injection tube portion 14 extends forward from the front wall portion 31a. The inside of the injection tube portion 14 is configured to be able to communicate with the inside of the storage cylinder 31 through the communication hole 31d. In this embodiment, the central axis of the injection tube portion 14 is referred to as the axis O2. The axis O2 extends in the front-rear direction L1 parallel to the axis O1. However, the axis O2 may be disposed coaxially with the axis O1. Furthermore, the axial direction (second axis direction) along the axis O2 does not have to coincide with the front-rear direction L1.

[0029] A spring seat 14a is provided at the rear of injection barrel 14. Spring seat 14a protrudes inward from the inner circumferential surface of injection barrel 14 in a second radial direction (a direction intersecting axis O2 when viewed from the front-rear direction L1) and extends in the front-rear direction L1. A communication groove 14b is formed in the front of injection barrel 14. Communication groove 14b opens on the inner circumferential surface of injection barrel 14 and extends in the front-rear direction L1.

[0030] 2, the joint part 17 connects the ejector main body 2 and the nozzle member 4 together, and the ejector main body 2 and the opening / closing mechanism 5 together. The joint part 17 includes a base part 17a, a rear mounting cylinder 17b, a front mounting outer cylinder 17c, and a front mounting inner cylinder 17d. Base portion 17a is formed in an annular shape in front of injection barrel portion 14 and is coaxial with axis O2. Rear mounting barrel 17b extends rearward from the outer periphery of base portion 17a and is fitted into mounting barrel 40 that surrounds injection barrel 14.

[0031] The front mounting outer cylinder 17c extends forward from the outer periphery of the base portion 17a. The front mounting inner cylinder 17d extends forward from a portion of the base portion 17a that is located inside the front mounting outer cylinder 17c in the second radial direction.

[0032] As shown in FIG. 1, the trigger mechanism 16 includes a main pump portion 15 and a trigger portion 50. The main pump section 15 stores and pumps the liquid in the container body A in response to the operation (rearward pulling) of the trigger section 50. The main pump section 15 includes a main cylinder 51 and a main piston 52. The main cylinder 51 is provided in front of the small diameter portion 10a of the vertical supply tube portion 10. The main cylinder 51 is formed in a cylindrical shape with a bottom that opens forward. Specifically, the main cylinder 51 includes a cylinder tube 51a, a rear wall portion 51b, a piston guide 51c, and a communication tube 51d.

[0033] The cylinder 51a is formed in a cylindrical shape centered on a pump axis O3 along the front-rear direction L1. The cylinder 51a is fitted from the front into a mounting cylinder 56 that extends forward from the vertical supply cylinder portion 10. The mounting cylinder 56 is disposed coaxially with the pump axis O3 and extends in the front-rear direction L1. In the following description, the direction that intersects with the pump axis O3 as viewed from the front-rear direction L1 may be referred to as the pump radial direction.

[0034] The rear wall portion 51b closes the rear end opening of the cylinder 51a. The piston guide 51c is formed in a cylindrical shape and protrudes forward from a portion of the rear wall portion 51b that is positioned on the pump axis O3. The communicating tube 51d protrudes rearward from the outer circumferential portion of the rear wall portion 51b (a portion located above the piston guide 51c). The rear end of the communicating tube 51d is inserted into a portion of the small diameter portion 10a located above the ball valve 21. The rear end opening of the communicating tube 51d is open inside the vertical supply tube portion 10. In other words, the inside of the main cylinder 51 and the inside of the vertical supply tube portion 10 are in communication through the communicating tube 51d.

[0035] The main piston 52 is provided in the main cylinder 51 so as to be movable in the front-rear direction L1. The main piston 52 includes a piston body portion 52a and a sliding cylindrical portion 52b. The piston main body 52a is formed in a cylindrical shape with a top and centered on the pump axis O3. A piston guide 51c is inserted into the piston main body 52a from the rear thereof. A biasing member 55 is interposed between the piston main body 52a and the piston guide 51c. The biasing member 55 biases the main piston 52 forward via the piston main body 52a. As a result, the main piston 52 is configured to be movable in the front-to-rear direction L1 in a forward-biased state with the piston main body 52a guided by the piston guide 51c.

[0036] The sliding cylindrical portion 52b is connected to the rear end of the piston main body portion 52a. The sliding cylindrical portion 52b is formed in a cylindrical shape and is arranged coaxially with the pump axis O3. The sliding cylindrical portion 52b surrounds the piston main body portion 52a from the outside in the pump radial direction. The sliding cylindrical portion 52b is in close contact with the inner circumferential surface of the cylinder 51a. The sliding cylindrical portion 52b slides on the inner circumferential surface of the cylinder 51a as the main piston 52 moves back and forth relative to the main cylinder 51.

[0037] The trigger portion 50 extends forward as it faces downward in front of the vertical supply tube portion 10. The upper end portion of the trigger portion 50 is supported rotatably about an axis along the left-right direction L2 relative to the mounting tube 40 or the joint portion 17. The front end portion of the piston main body portion 52a is connected to the middle portion of the trigger portion 50 in the up-down direction. Therefore, the main piston 52 moves rearward relative to the main cylinder 51 as the trigger portion 50 rotates rearward.

[0038] 2, the opening / closing mechanism 5 switches between communication and blocking between the inside and outside of the storage cylinder 31 through the ejection hole 3. Specifically, the opening / closing mechanism 5 includes a valve member 60, a first operating part 64, and a second operating part (operating part) 65.

[0039] The valve member 60 is provided between the injection tube portion 14 and the nozzle member 4. The valve member 60 includes a connecting tube portion 61, a guide member 62, and a valve body 63. The connecting tube portion 61 is provided within the injection tube portion 14 so as to be movable in the front-to-rear direction L1. The connecting tube portion 61 is formed in a cylindrical shape with a bottom that opens forward. The rear end of the connecting tube portion 61 is inserted into the injection tube portion 14 through the front-end opening of the injection tube portion 14. In this case, the front end of the connecting tube portion 61 protrudes forward beyond the front mounting inner tube 17d. A spring seat 61a is formed at the rear end of the connecting tube portion 61. The spring seat 61a protrudes outward in the second radial direction from the peripheral wall portion of the connecting tube portion 61. A biasing member 68 is interposed between the spring seat 61a of the connecting tube portion 61 and the spring seat 14a of the injection tube portion 14. The biasing member 68 biases the connecting tube portion 61 forward.

[0040] A circumferential groove 61c is formed in the connecting cylinder portion 61. The circumferential groove 61c extends around the entire circumference of the peripheral wall portion of the connecting cylinder portion 61, in a portion that is located forward of the spring seat 61a, around the axis O2. Communication openings 61b are formed in the circumferential groove 61c in portions located on both sides in the left-right direction L2. The communication openings 61b penetrate the bottom wall of the circumferential groove 61c (the peripheral wall portion of the connecting cylinder portion 61) in the left-right direction L2. The interior of the connecting cylinder portion 61 and the interior of the injection cylinder portion 14 are able to communicate with each other via the communication openings 61b and the communication groove 14b.

[0041] Guide member 62 is formed in the shape of a cylinder with a top that opens rearward. A through hole 62a that penetrates the top wall in the front-to-rear direction L1 is formed in the top wall of guide member 62. Guide member 62 is attached to injection cylinder 14 with connecting cylinder 61 passing through through through hole 62a.

[0042] The valve element 63 opens and closes the communication port 61b as the connecting tube portion 61 moves back and forth relative to the injection tube portion 14. The valve element 63 is formed in an annular shape that is elastically deformable in the front-to-back direction L1. The valve element 63 is sandwiched between the front-end opening edge of the injection tube portion 14 and the top wall portion of the guide member 62. Specifically, the valve element 63 protrudes inward in the second radial direction from the front-end opening edge of the injection tube portion 14. When the connecting tube portion 61 is in the initial position, the radially inner end of the valve element 63 fits into the circumferential groove 61c to close the communication port 61b. As a result, the valve element 63 blocks communication between the connecting tube portion 61 and the injection tube portion 14 through the communication port 61b. Meanwhile, as the connecting tube portion 61 moves rearward relative to the initial position, the valve element 63 leaves the circumferential groove 61c, thereby opening the communication port 61b. As a result, the interior of the connecting tube portion 61 communicates with the interior of the injection tube portion 14 through the communication port 61b and the communication groove 14b. Note that the valve element 63 is not limited to a configuration in which it opens and closes the interior of the communication port 61b by moving back and forth within the circumferential groove 61c. The valve element 63 may be configured to open and close the communication port 61b by moving toward and away from the outer peripheral surface of the connecting tube portion 61, for example.

[0043] In this embodiment, the space in front of the storage plunger 32 and surrounded by the storage cylinder 31 and the storage plunger 32, and the space in the injection tube portion 14 and located rearward of the connecting tube portion 61 function as a storage space 36. The storage space 36 is configured to communicate with the inside of the communication tube 12 through the supply hole 31c, and to communicate with the inside of the connecting tube portion 61 through the communication port 61b. In this embodiment, the maximum volume of the main pump portion 15 (the volume inside the main cylinder 51 when the trigger portion 50 is in the initial position) is set smaller than the maximum volume of the storage space 36 (the volume when the storage plunger 32 is in the rearmost position). The initial position of the trigger portion 50 refers to a state in which the main piston 52 has returned to its most forward position due to the restoring force of the biasing member 55.

[0044] In this embodiment, the communication port 61b is opened and closed by the valve body 63 as the connecting tube portion 61 moves back and forth relative to the injection tube portion 14, thereby switching the storage space 36 between an open state and a blocked state. The blocked state is a state in which the communication port 61b is closed by the valve body 63, thereby blocking communication between the inside of the storage space 36 and the outside of the trigger-type liquid jetter 1 through the ejection hole 3. The open state is a state in which the communication port 61b is opened, thereby connecting the inside of the storage space 36 and the outside of the trigger-type liquid jetter 1 through the ejection hole 3.

[0045] Here, the nozzle member 4 is fixed to the connecting cylinder portion 61 and configured to be movable back and forth integrally with the connecting cylinder portion 61. Specifically, the nozzle member 4 includes a fitting cylinder 71, a guide cylinder 72, and a connecting piece 73 (see FIG. 3). The fitting tube 71 is formed in the shape of a cylinder with a top that opens toward the rear. The front end of the connecting tube portion 61 is fitted into the fitting tube 71 from the rear of the fitting tube 71. The interior of the fitting tube 71 and the interior of the connecting tube portion 61 are in communication with each other through the rear end opening of the fitting tube 71 and the front end opening (second communication port) of the connecting tube portion 61. The top wall of the fitting tube 71 is formed with an ejection hole 3 that penetrates the top wall in the front-to-rear direction L1. The ejection hole 3 connects the inside and outside of the connecting tube portion 61.

[0046] The guide tube 72 is connected to the peripheral wall portion of the fitting tube 71 outward in the second radial direction. The front mounting inner tube 17d is inserted into the inside of the guide tube 72 from the rear of the guide tube 72. A rotation prevention portion (not shown) is provided between the nozzle member 4 and the joint portion 17. Therefore, the nozzle member 4 is configured to be movable back and forth together with the connecting tube portion 61 while its rotation about the axis O2 relative to the joint portion 17 is restricted. Note that the rotation prevention portion may be provided on the connecting tube portion 61 as long as the rotation of the nozzle member 4 and the connecting tube portion 61 relative to the joint portion 17 and the injection tube portion 14 is restricted.

[0047] A sliding portion 72a is formed at the front end of the guide tube 72. The sliding portion 72a is a ridge that protrudes forward from the guide tube 72 and extends in the circumferential direction about the axis O2. The amount of protrusion of the sliding portion 72a from the guide tube 72 gradually increases from one side to the other in the circumferential direction.

[0048] 3, the connecting pieces 73 extend outward in the second radial direction from the rear end edge of the guide tube 72 and then extend rearward. The rear ends of the connecting pieces 73 are located on both sides of the mounting tube 40 in the left-right direction L2. The rear ends of the connecting pieces 73 are provided with engaging protrusions 73a. The engaging protrusions 73a protrude outward in the left-right direction L2 from the rear end of each connecting piece 73.

[0049] 2 and 3, of the opening / closing mechanism 5 described above, the first operating part 64 is linked to the connecting cylinder part 61 via the nozzle member 4. The first operating part 64 is provided in a part of the joint part 17 that is located above the connecting cylinder part 61 so as to be rotatable about an axis along the left-right direction L2. Specifically, the first operating part 64 includes a pair of arm parts 64a, a connecting plate 64b, and an operating piece 64c.

[0050] The pair of arm portions 64a are disposed on both sides of the joint portion 17 in the left-right direction L2. Each arm portion 64a extends downward and forward. The lower end of each arm portion 64a is located below the second operating portion 65. The upper end of each arm portion 64a is supported by the joint portion 17 via a pivot pin 17f. Specifically, the pivot pins 17f each protrude outward from the joint portion 17 in the left-right direction L2. The pivot pins 17f are inserted into pivot holes 64d formed in the upper end of each arm portion 64a. Therefore, the arm portion 64a is configured to be rotatable around an axis along the left-right direction L2 at a portion of the joint portion 17 located above the connecting tube portion 61. The first operating portion 64 may be supported by the mounting tube 40.

[0051] The connecting plate 64b connects the lower ends of the pair of arm portions 64a below the second operating portion 65. The operating piece 64c protrudes forward from the connecting plate 64b.

[0052] An engagement recess 64f is formed in a portion of each arm 64a located below the pivot pin 17f. The engagement protrusion 73a is engaged within the engagement recess 64f. That is, the first operating part 64 rotates rearward around the pivot pin 17f by operating the operating piece 64c, thereby pushing the engagement protrusion 73a rearward via the inner circumferential surface of the engagement recess 64f. This causes the nozzle member 4 and the connecting tube part 61 to move rearward relative to the injection tube part 14. That is, by rotating the first operating part 64 rearward from the initial position, the storage space 36 is switched from a blocked state to an open state. The first operating part 64 can be returned to its initial position by the biasing force of the biasing member 68.

[0053] The second operating part 65 is linked to the connecting tube part 61 via the nozzle member 4. The second operating part 65 is attached to the front mounting outer tube 18 so as to be rotatable about the axis O2. Specifically, the second operating part 65 is formed in a topped cylindrical shape that opens toward the rear. The front mounting outer tube 18 is undercut-fitted into the peripheral wall part 65a of the second operating part 65. As a result, the second operating part 65 is configured to be rotatable about the axis O2 while its movement in the front-to-rear direction L1 relative to the joint part 17 is restricted.

[0054] The top wall portion 65b of the second operating portion 65 protrudes inward in the second radial direction from the front-end opening edge of the peripheral wall portion 65a. An exposure hole 65c penetrating the top wall portion 65b in the front-rear direction L1 is formed in the center of the top wall portion 65b in the second radial direction. The exposure hole 65c exposes the nozzle member 4 (the top wall portion of the fitting tube 71) to the outside. An engagement protrusion (regulating portion) 65d is formed on the opening edge of the exposure hole 65c in the top wall portion 65b. The engagement protrusion 65d protrudes rearward from the opening edge of the exposure hole 65c. The engagement protrusion 65d is configured to be slidable on the front end surface of the sliding portion 72a as the second operating portion 65 rotates. That is, as the second operating part 65 rotates from one side to the other in the circumferential direction relative to the joint part 17, it slides on the front end surface of the sliding part 72a from one side to the other in the circumferential direction, thereby pushing in the nozzle member 4. As a result, the nozzle member 4 and the connecting tube part 61 move rearward relative to the injection tube part 14. Meanwhile, when the second operating part 65 is rotated from the other side to one side in the circumferential direction with the nozzle member 4 and the connecting tube part 61 moved rearward, the nozzle member 4 and the connecting tube part 61 move forward due to the restoring force of the biasing member 55. Note that when the second operating part 65 is rotated from the initial position to the other end in the circumferential direction (when the storage space 36 is in the open state), it restricts the forward movement of the nozzle member 4 due to the restoring force of the biasing member 68. That is, the second operating part 65 maintains the storage space 36 in the open state.

[0055] The cover C covers the ejector body 2 from above, behind and both sides in the left-right direction L2. The nozzle member 4 and the second operating part 65 protrude from the cover C forward.

[0056] Next, we will explain the operation of the above-mentioned trigger-type liquid ejector 1. In the following explanation, we will explain the large-volume ejection mode in which the trigger part 50 is operated in the closed state, and the normal ejection mode in which the trigger part 50 is operated in the open state.

[0057] First, the large-volume spray mode will be described. When the trigger portion 50 is pulled rearward from its initial position, the main piston 52 moves rearward from its forwardmost position, pressurizing the main cylinder 51. As a result, the liquid in the main cylinder 51 is supplied into the vertical supply tube portion 10 (small diameter portion 10a) through the communicating tube 51d. The liquid supplied into the vertical supply tube portion 10 then presses the ball valve 21 downward and pushes the storage valve 29 upward. As a result, the storage valve 29 moves upward away from the upper valve seat portion 10g, with the ball valve 21 in contact with the lower valve seat portion 10f.

[0058] 4, the liquid in the vertical supply tube portion 10 is supplied to the storage space 36 (inside the storage cylinder 31) through the connecting tube 12 and the supply hole 31c. When the storage space 36 is pressurized by the inflow of liquid into the storage space 36, the storage plunger 32 moves rearward from the most forward position against the biasing force of the biasing member 33. As a result, the liquid is stored in the storage space 36.

[0059] When the trigger 50 is released, the main piston 52 moves forward in the main cylinder 51 due to the biasing force of the biasing member 55, and the trigger 50 also moves forward in its original position. As a result, the pressure inside the main cylinder 51 is reduced. This causes the ball valve 21 to float off the lower valve seat 10f, and the container A and the main cylinder 51 communicate with each other through the small-diameter portion 10a. Meanwhile, the reservoir valve 29 remains seated on the upper valve seat 10g, blocking communication between the main cylinder 51 and the reservoir space 36 through the small-diameter portion 10a. As a result, the liquid inside the container A is sucked up into the vertical supply tube 10. The liquid that has flowed into the vertical supply tube 10 is introduced into the main cylinder 51 through the connecting tube 51d, making it ready for the next trigger operation.

[0060] As the storage plunger 32 moves rearward, the blocking wall 32a moves rearward away from the front wall portion 31a of the storage cylinder 31, and the communication hole 31d is opened. Therefore, the liquid in the storage cylinder 31 flows into the injection tube portion 14 (storage space 36) through the communication hole 31d. However, in the blocked state, the movement of liquid into the connecting tube portion 61 is blocked. Therefore, with each trigger operation, the storage plunger 32 moves rearward, and the liquid is stored in the storage space 36.

[0061] To eject the liquid stored in the storage space 36, the storage space 36 is connected to the outside through the ejection hole 3 (open state). In this embodiment, the storage space 36 is opened by operating the first operating part 64.

[0062] First, as shown in FIG. 5, first operating portion 64 is pushed down via operating piece 64c. This causes first operating portion 64 to rotate around pivot pin 17f and move rearward. This causes nozzle member 4 to be pushed rearward via engagement protrusion 73a, causing nozzle member 4 and connecting tube portion 61 to move rearward relative to injection tube portion 14. As nozzle member 4 and connecting tube portion 61 move rearward, valve body 63 disengages from circumferential groove 61c (communication opening 61b). This places injection tube portion 14 and connecting tube portion 61 in communication with each other via communication groove 14b and communication opening 61b. As a result, storage space 36 is opened and communicates with the outside via connection tube portion 61 and nozzle member 4.

[0063] When the storage space 36 is in an open state, the liquid stored in the storage space 36 can be ejected to the outside. That is, the liquid stored in the storage space 36 is pushed forward by the restoring force of the biasing member 33. As a result, the liquid in the storage space 36 flows into the connecting tube portion 61 through the communicating groove 14b and the communicating port 61b without operating the trigger portion 50. Thereafter, the liquid that has flowed into the connecting tube portion 61 is ejected to the outside through the ejection hole 3. The outflow of liquid from the storage space 36 into the vertical supply tube portion 10 is regulated by the storage valve 29.

[0064] After the liquid has been ejected, the first operating unit 64 is returned to its initial position. Specifically, by releasing the pressing of the first operating unit 64 via the operating piece 64c, the nozzle member 4 and the connecting tube portion 61 move forward relative to the injection tube portion 14 due to the biasing force of the biasing member 68. Accordingly, the first operating unit 64 rotates around the pivot pin 17f due to the restoring force of the biasing member 68. This causes the first operating unit 64 to move forward. As the nozzle member 4 and the connecting tube portion 61 move forward, the connecting tube portion 61 reaches a position where the communication port 61b faces the valve body 63. Then, the valve body 63 undergoes restoration deformation, and the valve body 63 enters the circumferential groove 61c. This causes the valve body 63 to close the communication port 61b. As a result, the storage space 36 returns to its closed state, and the ejection of the liquid stops.

[0065] Next, the normal ejection mode will be described. In the normal ejection mode, with the storage plunger 32 in contact with the front wall portion 31a of the storage cylinder 31, the second operating portion 65 is operated to open the storage space 36. Specifically, as shown in FIG. 6, the circumferential wall portion 65a is gripped and the second operating portion 65 is rotated from one side to the other in the circumferential direction. Then, the engaging protrusion 65d of the second operating portion 65 slides on the sliding portion 72a of the nozzle member 4, pushing the nozzle member 4 rearward. As a result, the nozzle member 4 and the connecting tube portion 61 move rearward together relative to the injection tube portion 14, and the storage space 36 is opened.

[0066] In this state, when the trigger section 50 is operated, the liquid in the main pump section 15 (main cylinder 51) flows into the storage cylinder 31 (storage space 36) through the vertical supply tube section 10 and the connecting tube 12, just as in the large-volume ejection mode. The liquid that flows into the storage cylinder 31 passes through the storage cylinder 31 through the escape groove 32a3 and the communicating groove 32a4. The liquid that passes through the storage cylinder 31 flows into the injection tube section 14, then passes through the connecting tube section 61 and is ejected from the ejection hole 3.

[0067] After the liquid has been ejected, the second operating unit 65 is returned to its initial position. That is, when the second operating unit 65 is rotated from the other side to the one side in the circumferential direction, the nozzle member 4 and the connecting tube portion 61 move forward relative to the injection tube portion 14 due to the biasing force of the biasing member 68. As the nozzle member 4 and the connecting tube portion 61 move forward, the connecting tube portion 61 reaches a position where the communication port 61b faces the valve body 63. Then, the valve body 63 undergoes restoration deformation, and the valve body 63 enters the communication port 61b. This causes the valve body 63 to close the communication port 61b. As a result, the storage space 36 returns to a closed state, and the ejection of the liquid stops.

[0068] In this way, in this embodiment, the configuration is provided with an opening / closing mechanism 5 that switches between an open state in which the inside of the storage cylinder 31 is open to the outside through the ejection hole 3, and a blocked state in which communication between the inside of the storage cylinder 31 and the outside through the ejection hole 3 is blocked. According to this configuration, by operating the trigger portion 50 while the storage space 36 is in a blocked state, liquid can be stored in the storage space 36. After the liquid has been stored in the storage space 36, the storage space 36 can be opened, allowing the liquid to be ejected in an amount greater than the amount ejected according to the stroke of the trigger portion 50. As a result, a large amount of liquid can be ejected.

[0069] In this embodiment, the opening / closing mechanism 5 is configured to have a communication port (first communication port) 61b that can communicate with the inside of the injection tube portion 14 and a front end opening (second communication port) that communicates with the ejection hole 3, and is equipped with a connecting tube portion 61 that connects between the injection tube portion 14 and the nozzle member 4, and a valve body 63 that can open and close the communication port 61b. According to this configuration, the opening and closing mechanism 5 is provided between the storage cylinder 31 and the nozzle member 4, so that when the storage space 36 is in a blocked state, the liquid can be prevented from reaching the ejection hole 3. This makes it possible to prevent the liquid from unexpectedly ejecting when the storage space 36 is in a blocked state.

[0070] In this embodiment, the valve body 63 is configured to open and close the communication port 61b in accordance with the movement of the connecting tube portion 61 and the nozzle member 4 relative to the injection tube portion 14 in the front-rear direction L1. According to this configuration, the position of the nozzle member 4 in the front-rear direction L1 differs depending on whether the storage space 36 is in an open state or a closed state, making it easier to determine whether the storage space 36 is in an open state or a closed state.

[0071] In this embodiment, the first operating part 64 is configured to be provided on the ejector main body 2 so as to be movable in the front-rear direction L1. With this configuration, even if the connecting tube portion 61 and the valve body 63 are provided between the storage cylinder 31 and the nozzle member 4, the storage space 36 can be easily switched between an open state and a closed state.

[0072] In this embodiment, the connecting tube portion 61 and the nozzle member 4 are configured to be movable in the front-rear direction L1 relative to the second operating portion 65 as the second operating portion 65 is rotated. With this configuration, even if the connecting tube portion 61 and the valve body 63 are provided between the storage cylinder 31 and the nozzle member 4, the storage space 36 can be easily switched between an open state and a closed state.

[0073] In particular, in this embodiment, the engaging protrusion 65d restricts movement of the connecting tube portion 61 and the nozzle member 4 in the front-rear direction L1, so that the trigger can be operated while maintaining the open state. In this case, in addition to the large-volume spray mode, spraying in, for example, a normal spray mode can also be made possible, improving convenience.

[0074] In this embodiment, the storage plunger 32 is configured to have a communication groove (communication flow path) 32a4 formed therein, which connects the inside of the storage cylinder 31 with the inside of the injection tube portion 14 when the communication hole 31d is closed. According to this configuration, by operating the trigger unit 50 after opening the storage space 36, the liquid in the main pump unit 15 is ejected from the ejection hole 3 through the communication groove 32a4. This allows the amount of liquid to be ejected according to the stroke of the trigger unit 50. As a result, usability can be improved. The communication flow path may be configured to penetrate the blocking wall 32a in the front-rear direction L1.

[0075] (Second embodiment) This embodiment differs from the first embodiment in that a first operating portion 100 is formed integrally with a trigger portion 50. In the trigger-type liquid ejector 1 shown in FIG. 7, the first operating part 100 includes an operating piece 101 and an engaging part 102. The operation piece 101 extends forward from the upper part of the trigger portion 50. Specifically, the operation piece 101 is formed in an arc shape that protrudes upward in a side view seen from the left-right direction L2. The operation piece 101 can be pulled upward by hooking a finger or the like from below the operation piece 101.

[0076] The engaging portion 102 protrudes upward from the upper end of the trigger portion 50. The engaging portion 102 engages with the engaging protrusion 73a of the nozzle member 4 from the front of the engaging protrusion 73a.

[0077] In this embodiment, the bulging portion 32a2 does not have the communication groove 32a4 (see FIG. 2) of the first embodiment. Therefore, when the blocking wall 32a abuts against the front wall portion 31a, the bulging portion 32a2 is in close contact with the opening edge of the communication hole 31d, thereby sealing the communication hole 31d.

[0078] To operate the trigger-type liquid ejector 1 of this embodiment in the large-volume ejection mode, as in the first embodiment described above, the storage space 36 is closed and the trigger portion 50 is operated backward from the initial position. This causes liquid to be stored in the storage space 36. To open the storage space 36 in this state, for example, as shown in FIG. 8 , a finger is hooked on the operating piece 101 and the operating piece 101 is pulled up. This causes the trigger portion 50 and the first operating piece 100 to rotate forward together from the state in which the trigger portion 50 is in the initial position. This causes the engaging protrusion 73a to be pushed backward via the engaging portion 102, and the nozzle member 4 and the connecting tube portion 61 to move backward relative to the injection tube portion 14. As a result, the storage space 36 is opened, and the liquid in the storage space 36 is ejected through the ejection hole 3.

[0079] To return the storage space 36 to the blocked state again, for example, the first operating unit 100 is released. Then, the trigger unit 50 and the first operating unit 100 return to their initial positions due to the restoring forces of the biasing members 55, 68. This returns the storage space 36 to the blocked state.

[0080] The trigger-type liquid sprayer 1 of this embodiment can be operated in a continuous spray mode in addition to a large-volume spray mode. The continuous spray mode is a mode in which the trigger unit 50 is used to perform a spray operation after the storage space 36 is opened. For example, when the second operating unit 65 is operated to open the storage space 36 and the trigger unit 50 is pulled rearward, the liquid in the main pump unit 15 flows into the storage space 36 through the vertical supply tube unit 10 and the connecting tube 12. When the storage space 36 is pressurized by the inflow of liquid into the storage space 36, the storage plunger 32 moves rearward from its most forward position against the biasing force of the biasing member 33. This causes the liquid to be stored in the storage space 36.

[0081] As the storage plunger 32 moves rearward, the blocking wall 32a moves rearward away from the front wall portion 31a of the storage cylinder 31, and the communication hole 31d is opened. As a result, the liquid in the storage space 36 flows into the injection tube portion 14 through the communication hole 31d and is ejected from the ejection hole 3 through the connecting tube portion 61.

[0082] In this way, each time the trigger unit 50 is pulled rearward, liquid flows from the main pump unit 15 into the storage space 36, and the liquid in the storage space 36 is continuously sprayed from the spray holes 3. In other words, if the operation of the trigger unit 50 is stopped while liquid remains in the storage space 36, the supply of liquid from the main pump unit 15 to the storage space 36 stops, but the biasing force of the biasing member 33 causes the storage plunger 32 to start moving forward toward the most forward position. This allows the liquid stored in the storage space 36 to be sprayed not only when the trigger unit 50 is operated, but also when the trigger unit 50 is not operated, allowing for continuous spraying of liquid.

[0083] In this embodiment, the first operating part 100 is formed integrally with the trigger part 50, and is configured to move the connecting tube part 61 and the nozzle member 4 in the forward / backward direction L1 as the trigger part 50 is rotated forward from its initial position. This configuration reduces the number of parts because it is not necessary to provide first operating unit 100 as a separate part. Also, when performing a spray operation, there is no need to switch hands between operating trigger unit 50 and first operating unit 100, providing excellent operability.

[0084] In particular, in this embodiment, the engaging protrusion 65d restricts movement of the connecting tube portion 61 and the nozzle member 4 in the front-rear direction L1, so that the trigger can be operated while maintaining the open state. In this case, in addition to the large-volume spray mode, spraying in, for example, a continuous spray mode can also be made possible, improving convenience.

[0085] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Addition, omission, substitution, and other modifications of the configuration are possible within the scope of the spirit of the present invention. The present invention is not limited by the above description, but is limited only by the appended claims. In the above-described embodiment, a configuration has been described in which the opening and closing mechanism 5 switches between communication between the inside of the storage space 36 and the outside of the trigger-type liquid ejector and blocking communication between them between the nozzle member 4 and the injection tube portion 14, but the configuration is not limited to this. The opening and closing mechanism may switch between communication between the inside of the storage space 36 and the outside of the trigger-type liquid ejector and blocking communication between them by opening and closing the ejection hole 3 from the outside of the nozzle member 4.

[0086] In the above-described embodiment, the opening / closing mechanism 5 has been described as including a first operating unit and a second operating unit as its operating units, but is not limited to this configuration. The opening / closing mechanism 5 may be provided with at least one operating unit. In the above-described embodiment, the communication port 61b is opened and closed by the movement of the connecting tube portion 61, but the present invention is not limited to this configuration. For example, the communication port 61b may be opened and closed by the movement of the valve body 63.

[0087] In the above-described embodiment, the trigger portion 50 is configured to move in the front-rear direction L1 by rotating, but the present invention is not limited to this configuration. The trigger portion 50 may be configured to slide in the front-rear direction L1. In addition, the opening / closing mechanism 5 may be provided with a fixing portion that makes the first operating portion inoperable (restricts movement in the forward / backward direction L1) when the second operating portion 65 is rotated to the other circumferential end (when the storage space 36 is opened).

[0088] In addition, within the scope of the spirit of the present invention, it is possible to replace the components in the above-described embodiments with well-known components as appropriate, and the above-described modified examples may be combined as appropriate. [Explanation of symbols]

[0089] 1: Trigger-type liquid sprayer 2: Squirt body 3:Blowout hole 4: Nozzle material 5: Opening and closing mechanism 10: Vertical supply tube 14: Injection cylinder part 16: Trigger mechanism 31: Storage cylinder 31d: Communication hole 32: Reservoir plunger 32a3: Relief groove (communicating flow path) 32a4: communicating groove (communicating flow path) 50: Trigger section 61: Connecting tube part 61b: Communication port (1st communication port) 63: Valve body 64: 1st operation section 65:Second operation section (operation section) 65d: Engagement protrusion (regulating part) 100: 1st operation section A: Container body

Claims

1. an ejector body attached to a container body that contains a liquid; a nozzle member provided in front of the ejector body and having an ejection hole formed therein for ejecting liquid forward; Equipped with The ejector body includes: a vertical supply tube portion extending in the vertical direction and sucking up the liquid in the container body; a trigger mechanism including a trigger portion disposed in front of the vertical supply tube portion so as to be movable rearward in a forward biased state, the trigger portion moving rearward to cause the liquid to flow from inside the vertical supply tube portion toward the ejection holes; a storage cylinder provided between the vertical supply tube portion and the nozzle member, into which the liquid that has passed through the vertical supply tube portion is supplied as the trigger portion moves rearward; a storage plunger that is disposed in the storage cylinder so as to be movable in a first axial direction along the central axis of the storage cylinder, and that moves toward one side in the first axial direction as liquid is supplied into the storage cylinder and is biased toward the other side in the first axial direction; A trigger-type liquid ejector equipped with an opening / closing mechanism that switches between an open state in which the inside of the storage cylinder is open to the outside through the ejection hole and a blocked state in which communication between the inside of the storage cylinder and the outside through the ejection hole is blocked.

2. the ejector body includes an injection tube portion extending from the storage cylinder toward the nozzle member, The opening and closing mechanism includes: a connecting tube portion that has a first communication port that can communicate with the inside of the injection tube portion and a second communication port that communicates with the ejection hole, and that connects the injection tube portion and the nozzle member; 2. The trigger-type liquid ejector according to claim 1, further comprising a valve body that can open and close the first communication port.

3. the connecting tube portion is fixed to the nozzle member and configured to be movable in a second axial direction along a central axis of the injection tube portion, The trigger-type liquid ejector according to claim 2 , wherein the valve body opens and closes the first communication port in accordance with movement of the connecting tube portion and the nozzle member relative to the injection tube portion in the second axial direction.

4. the opening / closing mechanism includes an operating unit provided on the ejector body so as to be rotatable about the central axis of the injection tube portion, the connecting tube portion and the nozzle member are configured to be movable in the second axial direction relative to the operating portion in response to a rotational operation of the operating portion, The trigger-type liquid ejector according to claim 3 , wherein the operating portion includes a restricting portion that restricts movement of the connecting tube portion and the nozzle member in the second axial direction from the open state to the closed state.

5. The storage cylinder has a communication hole formed therein that communicates with the ejection hole, The storage plunger is configured to be able to open and close the communication hole in accordance with movement in the first axial direction relative to the storage cylinder, 5. A trigger-type liquid ejector as described in any one of claims 1 to 4, wherein the storage plunger has a communication flow path formed therein that connects the inside of the storage cylinder with the inside of the ejection hole when the communication hole is closed.

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