Trigger type liquid ejector

Abstract

To prevent a spring receiver of a trigger type liquid ejector from coming off.SOLUTION: A trigger-type liquid ejector 1 includes a trigger mechanism 40 that circulates a liquid toward an ejection-hole side by rearward movement of a trigger portion. The trigger mechanism 40 includes a cylinder 41, a piston 42, a spring receiver 44, and a biasing member 43. The spring receiver 44 includes: a flange portion 441 that covers a front end surface 411 of a front-end opening portion 410 of the cylinder 41; a surrounding tube portion 442 continuously provided on a radially outer side of the flange portion 441 and surrounding an outer peripheral surface 412 of the front-end opening portion 410 of the cylinder 41; and a plurality of engaging holes 443 penetrating the surrounding tube portion 442 in a radial direction. The cylinder 41 includes a plurality of engaging protrusions 413 inserted into the plurality of engaging holes 443 in the radial direction.SELECTED DRAWING: Figure 2

Description

[Technical Field]

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

[0002] Trigger-type liquid ejectors are known that suck up liquid from a container by operating a trigger member and eject the liquid through an ejection hole. The trigger-type liquid ejector described in Patent Document 1 below includes a biasing member that biases the trigger part forward, and a spring receiver that is attached to the front opening of the main cylinder and receives the rear end of the biasing member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-98189 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above trigger-type liquid sprayer, the spring retainer is fitted into an undercut on the inside of the front end opening of the main cylinder, but the fitting strength is weak, and the spring retainer can come off the main cylinder during transportation. Also, when the trigger part is pressed from the left or right, the spring retainer can be pried off and come off the main cylinder. If the spring retainer comes off, it can lead to liquid leakage, etc., so a structure that prevents the spring retainer from coming off easily is required.

[0005] The present invention has been made in view of the above circumstances, and its object is to prevent the spring receiver of a trigger-type liquid ejector from coming off. [Means for solving the problem]

[0006] (1) A trigger-type liquid ejector according to the present invention comprises an ejector body attached to a container body containing liquid, and a nozzle member attached to the ejector body and having an ejection hole formed therein for ejecting the liquid, the ejector body comprising a vertical supply tube part for sucking up the liquid in the container body, and a trigger mechanism having a trigger part arranged so as to be movable rearward in a forward biased state, the rearward movement of the trigger part causing the liquid to flow from inside the vertical supply tube part towards the ejection hole side, the trigger mechanism comprising a cylinder having an open front end and a rear end communicating with the interior of the vertical supply tube part, and a nozzle member connected to the trigger part. a piston connected to the front end opening of the cylinder and arranged inside the cylinder so as to be movable in the forward and backward directions; a spring retainer attached to the front end opening of the cylinder; and a biasing member arranged between the spring retainer and the trigger portion and biasing the trigger portion forward, wherein the spring retainer comprises a flange portion covering the front end surface of the front end opening of the cylinder, a surrounding cylindrical portion connected to the radially outside of the flange portion and surrounding the outer peripheral surface of the front end opening of the cylinder, and a plurality of engagement holes passing radially through the surrounding cylindrical portion, and the cylinder has a plurality of engagement protrusions inserted radially into the plurality of engagement holes.

[0007] In the trigger-type liquid ejector according to the present invention, the spring retainer attached to the front opening of the cylinder extends radially outward while covering the front end surface of the front opening of the cylinder, and then bends back to surround the outer circumferential surface of the front opening of the cylinder from the radial outside. The spring retainer is formed with a plurality of engagement holes that penetrate radially, and the cylinder is provided with a plurality of engagement protrusions that are inserted radially into these engagement holes. This results in a structure in which the spring retainer and the cylinder interlock, significantly increasing the fitting strength. This makes it difficult for the spring retainer to come off the front opening of the cylinder, preventing the occurrence of liquid leakage, etc.

[0008] (2) Some of the plurality of engagement holes and the plurality of engagement protrusions may be arranged on both the left and right sides of an upper half region of the front end opening of the cylinder excluding the top portion.

[0009] In this case, when a force is applied to the front end opening of the cylinder from diagonally above, the spring receiver is less likely to come off from the front end opening of the cylinder. [Effects of the Invention]

[0010] According to the trigger-type liquid ejector of the present invention, it is possible to prevent the spring receiver from coming off. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a vertical cross-sectional view of a trigger-type liquid ejector according to an embodiment of the present invention. [Figure 2] FIG. 2 is an enlarged view of a main part of the trigger-type liquid ejector shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a trigger-type liquid ejector according to the present invention will be described below with reference to the drawings.

[0013] 1, the trigger-type liquid sprayer 1 of this embodiment comprises a sprayer body 2 that is attached to a container body A that contains liquid, a nozzle member 3 that is attached to the sprayer body 2 and has ejection holes 3a that eject the liquid, and a cover body 4 that covers the sprayer body 2 and the nozzle member 3. Unless otherwise specified, each component part of the trigger-type liquid sprayer 1 is a molded product made of synthetic resin.

[0014] The ejector body 2 mainly comprises a vertical supply tube portion 10, a connecting tube portion 20, an attachment cap 30, a trigger mechanism 40, a ball valve 50, a storage valve 60, a storage cylinder 70, a storage plunger 80, a plunger biasing member 90, and a relay member 100.

[0015] In this embodiment, the central axis of the vertical supply tube portion 10 is defined as axis O1, the container body A side along this axis O1 is defined as the lower side, the opposite side is defined as the upper side, and the direction along axis O1 is defined as the up-down direction. In addition, in a plan view seen from the up-down direction, a direction intersecting with axis O1 is defined as the front-rear direction, and a direction perpendicular to both the up-down direction and the front-rear direction is defined as the left-right direction.

[0016] In this embodiment, the central axis of the cylinder 41 of the trigger mechanism 40 is defined as the axis O2. In this embodiment, the axis O2 extends in the front-rear direction. Therefore, in this embodiment, the front-rear direction corresponds to the axial direction along the central axis of the cylinder 41. Furthermore, in this embodiment, the direction intersecting the axis O2 of the cylinder 41 is defined as the radial direction. In this embodiment, the direction going around the axis O2 of the cylinder 41 is defined as the circumferential direction.

[0017] The vertical supply tube portion 10 extends in the vertical direction and has the function of sucking up the liquid inside the container body A. The vertical supply tube portion 10 is attached to the container body A by an attachment cap 30. The upper part of a pipe 11 that extends in the vertical direction and sucks up the liquid from the container body A is fitted into the vertical supply tube portion 10.

[0018] A connecting tube 20 extending forward is provided at the upper end of the vertical supply tube 10. The connecting tube 20 is formed in a cylindrical shape with a bottom that opens to the front of the ejector body 2 and is closed at the rear of the ejector body, and is in communication with the inside of the vertical supply tube 10. A blocking plug 21 is attached to the front opening of the connecting tube 20 to block (seal) the opening.

[0019] A cylinder tubular portion 32 is provided below the connecting tubular portion 20 and above the attachment cap 30. The cylinder tubular portion 32 protrudes forward from the vertical supply tubular portion 10 and is open forward. A cylinder 41 of the trigger mechanism 40 is fitted into the cylinder tubular portion 32. The cylinder 41 is formed in a bottomed tubular shape that is open forward and closed at the rear. The interior of the cylinder 41 is connected to the interior of the vertical supply tubular portion 10.

[0020] The trigger mechanism 40 is capable of causing the liquid to flow from inside the vertical supply tube portion 10 toward the nozzle hole 3a through the connecting tube portion 20 by swinging the trigger portion 5 backward. The trigger mechanism 40 includes the trigger portion 5, a cylinder 41, a piston 42, and a biasing member 43.

[0021] The trigger portion 5 is disposed in front of the vertical supply tube portion 10 so as to be movable rearward in a forward biased state. The trigger portion 5 is formed to extend in the vertical direction and is disposed below an injection tube portion 72, which will be described later. The upper end portion of the trigger portion 5 is journaled on both side surfaces of the relay member 100 so as to be swingable in the front-rear direction, and the lower end portion is disposed in front of the cylinder 41.

[0022] The piston 42 is disposed inside the cylinder 41 so as to be movable in the front-rear direction. The piston 42 is movable in the front-rear direction in conjunction with the swing of the trigger portion 5. As a result, the inside of the cylinder 41 is pressurized and depressurized as the piston 42 moves in the front-rear direction. The piston 42 is formed in a cylindrical shape with a top that is open at the rear and closed at the front.

[0023] The piston 42 is urged forward by the urging force of the urging member 43 via the trigger portion 5. As the trigger portion 5 swings rearward, the piston 42 moves rearward and is pushed into the cylinder 41. When the trigger portion 5 is in the forward-most swing position, the piston 42 is correspondingly located at the forward-most position.

[0024] The biasing member 43 is, for example, a metal coil spring. The biasing member 43 is disposed coaxially with the piston 42 and the cylinder 41, and biases the trigger portion 5, to which the piston 42 is connected, forward. The biasing member 43 is disposed between the trigger portion 5 and a spring receiver 44 attached to an opening at the front of the cylinder 41. However, the material of the biasing member 43 is not limited to metal, and a resin spring, for example, may be used.

[0025] The ball valve 50 and the storage valve 60 are provided in the vertical supply tube portion 10. The ball valve 50 is a check valve that blocks communication between the inside of the container body A and the inside of the cylinder 41 through the inside of the vertical supply tube portion 10 when the inside of the cylinder 41 is pressurized, and displaces upward when the inside of the cylinder 41 is depressurized, thereby allowing communication between the inside of the container body A and the inside of the cylinder 41 through the inside of the vertical supply tube portion 10.

[0026] A storage valve 60 is disposed above the ball valve 50. The storage valve 60 is a check valve that allows the supply of liquid from the vertical supply tube portion 10 through the connecting tube portion 20 into the storage cylinder 70, and also restricts the outflow of liquid from the storage cylinder 70 through the connecting tube portion 20 into the vertical supply tube portion 10.

[0027] The cover body 4 is formed so as to cover the entire vertical supply tube portion 10 except for the lower end portion, and the entire storage cylinder 70 from at least both the left and right sides and above.

[0028] The storage cylinder 70 is disposed above the vertical supply tube portion 10 and the connecting tube portion 20. In this embodiment, the lower end of the storage cylinder 70 is integrally formed with the upper end of the vertical supply tube portion 10 and the upper end of the connecting tube portion 20. The liquid that has passed through the vertical supply tube portion 10 and the connecting tube portion 20 is supplied to the inside of the storage cylinder 70 (a storage space 70a described later) by the rearward swing of the trigger portion 5.

[0029] Specifically, a supply hole 71 that communicates with the inside of the connecting cylindrical portion 20 is formed in the lower portion of the front end of the storage cylinder 70. The supply hole 71 opens to a portion located rearward of the blocking plug 21. This makes it possible to supply the liquid that has passed through the vertical supply cylindrical portion 10 and the connecting cylindrical portion 20 into the storage cylinder 70 through the supply hole 71.

[0030] The storage plunger 80 is disposed within the storage cylinder 70 so as to be movable in the front-to-rear direction. This allows the storage plunger 80 to slide tightly in the front-to-rear direction within the storage cylinder 70. The storage plunger 80 moves rearward as liquid is supplied into the storage cylinder 70. The storage plunger 80 blocks communication between the interior of the vertical supply cylinder portion 10 and the ejection holes 3a through the interior of the connecting cylinder portion 20, and when moved rearward, allows communication between the interior of the vertical supply cylinder portion 10 and the ejection holes 3a through the interior of the connecting cylinder portion 20.

[0031] That is, at the forwardmost position, the storage plunger 80 blocks communication between the interior of the vertical supply cylinder 10 and the ejection holes 3a (inside the injection cylinder 72 described below) through the interior of the connecting cylinder 20, and when moved rearward from the forwardmost position, allows communication between the interior of the vertical supply cylinder 10 and the ejection holes 3a (inside the injection cylinder 72) through the interior of the connecting cylinder 20. Note that in the storage cylinder 70, the space located forward of the storage plunger 80 functions as storage space 70a.

[0032] The storage space 70a stores the liquid that passes through the vertical supply tube portion 10 and the connecting tube portion 20 and also passes through the supply hole 71. The storage space 70a expands as the storage plunger 80 moves rearward due to the supply of liquid. The storage space 70a can communicate with the inside of the injection tube portion 72, which will be described later.

[0033] The plunger biasing member 90 biases the storage plunger 80 forward. The plunger biasing member 90 is disposed rearward of the storage plunger 80 within the storage cylinder 70. In the initial state before the trigger portion 5 is operated, the plunger biasing member 90 biases the storage plunger 80 forward. As a result, the storage plunger 80 is located at the forward-most position.

[0034] The plunger biasing member 90 is a metal coil spring, but may be a resin spring or other elastic member.

[0035] In the storage cylinder 70 and storage plunger 80 configured as described above, the liquid can be pressurized in the storage space 70a until the storage plunger 80 moves rearward. Thereafter, when the liquid pressure in the storage space 70a reaches a predetermined value, the storage plunger 80 moves rearward against the plunger biasing member 90. This allows the liquid in the storage space 70a to be supplied to the ejection hole 3a side. Therefore, the storage plunger 80 can function as a pressure accumulator valve.

[0036] The injection tube portion 72 extends forward from the storage cylinder 70. The injection tube portion 72 is in communication with the interior of the vertical supply tube portion 10 through the interior of the storage cylinder 70 (storage space 70a) and the interior of the connecting tube portion 20. This enables the injection tube portion 72 to guide the liquid that has passed through the interior of the vertical supply tube portion 10, the interior of the connecting tube portion 20, and the interior of the storage cylinder 70 (storage space 70a) to the ejection hole 3a.

[0037] A relay member 100 is attached to the front end of the injection tube portion 72, connecting the injection tube portion 72 and the nozzle member 3. The relay member 100 is attached to the injection tube portion 72 from the front. The nozzle member 3 is attached to the relay member 100 so as to be rotatable about the central axis of the ejection hole 3a. The nozzle member 3 is rotatable about the central axis of the ejection hole 3a.

[0038] A stopper 6 is connected to the nozzle member 3. The stopper 6 rotates in conjunction with the rotation of the nozzle member 3, and is interposed between the trigger portion 5 and the spring receiver 44, and is movable between a restricting position where it restricts the rearward movement of the trigger portion 5, and a releasing position where it retreats from the restricting position.

[0039] 2 is an enlarged view of the fitting portion between the cylinder 41 and the spring bearing 44, which is surrounded by a two-dot chain line in FIG. 2. As shown in FIG. 2, the cylinder 41 is fitted inside the cylinder tubular portion 32. A front end opening 410 of the cylinder 41 has a ring shape that protrudes forward from the front end edge of the cylinder tubular portion 32 and extends radially outward, covering the front end surface of the cylinder tubular portion 32.

[0040] The spring bearing 44 includes a fitting cylindrical portion 440, a flange portion 441, and a surrounding cylindrical portion 442. The fitting cylindrical portion 440 is formed in a cylindrical shape with a bottom that is open at the front. An opening is formed in the center of the bottom of the fitting cylindrical portion 440, through which a portion of the piston 42 is disposed. The peripheral edge of the opening at the bottom of the spring bearing 44 receives the rear end of the biasing member 43.

[0041] A fitting protrusion 440a that fits undercut into the inner peripheral surface of the cylinder 41 is formed on the outer peripheral surface of the fitting cylindrical portion 440. The fitting protrusion 440a is formed as a rib that extends in the front-rear direction along the outer peripheral surface of the fitting cylindrical portion 440. A plurality of the ribs are provided at intervals in the circumferential direction. The ribs extend from the outer peripheral surface of the fitting cylindrical portion 440 to the rear surface of the flange portion 441.

[0042] The flange portion 441 is connected to the front end of the fitting cylindrical portion 440. The flange portion 441 has a circular ring shape that protrudes forward from the front end opening 410 of the cylinder 41 and extends radially outward, covering the front end surface 411 of the front end opening 410 of the cylinder 41. The front surface of the flange portion 441 receives the stopper 6 that is positioned at the regulated position.

[0043] The surrounding cylinder portion 442 is connected to the outer edge of the flange portion 441. The surrounding cylinder portion 442 extends rearward from the outer edge of the flange portion 441 and surrounds the outer peripheral surface 412 of the front end opening 410 of the cylinder 41. The rear end of the surrounding cylinder portion 442 extends radially outward from the cylinder cylindrical portion 32 and covers a portion of the outer peripheral surface of the cylinder cylindrical portion 32.

[0044] The surrounding cylindrical portion 442 is formed with a plurality of engagement holes 443 penetrating in the radial direction. The plurality of engagement holes 443 are opposed in the radial direction to the front end opening 410 of the cylinder 41 protruding forward from the cylinder cylindrical portion 32. The engagement holes 443 are formed at four locations intermittently in the circumferential direction, but the number of engagement holes 443 is not limited. The engagement holes 443 can be formed intermittently, for example, by cutting out the portions of the injection molding die for the spring retainer 44.

[0045] The cylinder 41 is provided with a plurality of engagement protrusions 413 that are inserted radially into the plurality of engagement holes 443. The plurality of engagement protrusions 413 extend radially outward from the outer peripheral surface 412 of the front end opening 410 of the cylinder 41. The number of engagement protrusions 413 is the same as the number of engagement holes 443, and they are formed intermittently in the circumferential direction. The rearward facing surface of the engagement protrusions 413 faces the forward facing inner wall surface of the engagement hole 443 in the front-rear direction.

[0046] The multiple engagement holes 443 and multiple engagement protrusions 413 are formed in a plurality of locations (four locations in this embodiment) in the region of the front end opening 410 of the cylinder 41 excluding the top. As shown in FIG. 1 , the top of the front end opening 410 of the cylinder 41 is shaped to avoid interference with the connecting tubular portion 20 and the occluding plug 21 above it, making it difficult to provide the engagement holes 443 and engagement protrusions 413. For this reason, the multiple engagement holes 443 and multiple engagement protrusions 413 are formed in the 2 o'clock, 5 o'clock, 7 o'clock, and 10 o'clock directions clockwise when viewing the front end opening 410 of the cylinder 41 from the front. Some of the engagement holes 443 and engagement protrusions 413 formed in the 2 o'clock and 10 o'clock directions are located on both the left and right sides of the upper half of the region of the front end opening 410 of the cylinder 41 excluding the top. The engagement hole 443 and engagement protrusion 413 arranged in the upper half region act to make it difficult for the spring retainer 44 to come off the front end opening 410 of the cylinder 41 when a force is applied obliquely from above to the front end opening 410 of the cylinder 41. The size of each of the engagement hole 443 and the engagement protrusion 413 is 1 / 6 or less of the circumference of the front end opening 410 of the cylinder 41.

[0047] Next, a case where the trigger-type liquid ejector 1 configured as described above is used will be described.

[0048] First, to use the trigger-type liquid sprayer 1, the stopper 6 is rotated from the restricting position shown in Figure 1 to the unrestricting position. Next, the trigger part 5 is pulled backward against the biasing force of the biasing member 43. Note that by operating the trigger part 5 multiple times, liquid is filled into each part of the trigger-type liquid sprayer 1, and the vertical supply tube part 10 is now in a state where liquid can be sucked up.

[0049] When the trigger portion 5 is pulled rearward against the biasing force of the biasing member 43, the piston 42 moves rearward from the forwardmost position, and pressure is applied inside the cylinder 41. As a result, the liquid inside the cylinder 41 is supplied to the vertical supply tube portion 10. The liquid supplied to the vertical supply tube portion 10 presses the ball valve 50 downward and also pushes the storage valve 60 upward.

[0050] This allows the liquid in the vertical supply tube portion 10 to be supplied to the storage space 70a of the storage cylinder 70 through the connecting tube portion 20 and the supply hole 71, thereby pressurizing the storage space 70a. Therefore, as the storage space 70a is pressurized, the storage plunger 80 can be moved rearward from its most forward position against the biasing force of the plunger biasing member 90, allowing the liquid to be stored (filled) in the storage space 70a. As the storage plunger 80 moves rearward, the pressurized liquid in the storage space 70a can be guided through the injection tube portion 72 to the ejection hole 3a. This allows the liquid to be ejected forward from the ejection hole 3a.

[0051] As described above, each time the trigger portion 5 is pulled rearward, liquid can be ejected from the ejection hole 3a, and the storage plunger 80 can be moved rearward to store liquid in the storage space 70a.

[0052] When the trigger portion 5 is subsequently released, the trigger portion 5 moves forward due to the elastic restoring force (biasing force) of the biasing member 43, and accordingly, the piston 42 connected to the trigger portion 5 also moves forward within the cylinder 41. As a result, the pressure within the cylinder 41 can be reduced to a pressure lower than the pressure within the container body A, and the ball valve 50 can be raised while the storage valve 60 remains closed. Therefore, the liquid within the container body A can be sucked up into the vertical supply tube portion 10 and introduced into the cylinder 41. This allows preparation for the next eruption.

[0053] Furthermore, when the operation of the trigger portion 5 toward the rear is stopped, the supply of liquid to the storage space 70a through the vertical supply tube portion 10 and the connecting tube portion 20 is stopped, but the storage plunger 80 begins to move forward toward the most forward position due to the biasing force of the plunger biasing member 90. At this time, the outflow of the liquid from the storage space 70a into the vertical supply tube portion 10 is restricted by the storage valve 60.

[0054] This allows the liquid stored in the storage space 70a to be guided through the inside of the injection tube portion 72 to the ejection hole 3a, and the liquid can be continuously ejected forward through the ejection hole 3a. In this way, liquid can be ejected not only when the trigger portion 5 is pulled backward, but also when the trigger portion 5 is not operated, and liquid can be ejected continuously.

[0055] As described above, the trigger-type liquid ejector 1 of this embodiment can eject liquid not only when the trigger portion 5 is pulled backward, but also when the trigger portion 5 is not operated, and can eject liquid continuously. The trigger portion 5 has its upper end (fulcrum) pivotally supported by the nozzle member 3 so as to be able to swing, and the piston 42 is connected to the middle portion (point of application) of the trigger portion 5. Therefore, by operating the lower end portion (point of application) of the trigger portion 5, for example, the piston 42 can be moved efficiently using the so-called principle of leverage. This improves the operability of the trigger portion 5.

[0056] Furthermore, according to the trigger-type liquid ejector 1 of this embodiment, as shown in FIG. 2, the spring receiver 44, which is undercut-fitted within the cylinder 41, extends radially outward while covering the front end surface 411 of the front end opening 410 of the cylinder 41, and then bends back to surround the outer circumferential surface 412 of the front end opening 410 of the cylinder 41 from the radial outside. The spring receiver 44 is formed with a plurality of engagement holes 443 penetrating radially, and the cylinder 41 is provided with a plurality of engagement protrusions 413 inserted radially into these engagement holes 443. This results in a structure in which the spring receiver 44 and the cylinder 41 interlock, significantly increasing the engagement strength. As a result, even during transportation or when a prying force is applied to the trigger portion 5 from the left and right, the spring receiver 44 is less likely to come off the front end opening 410 of the cylinder 41, preventing the occurrence of liquid leakage, etc.

[0057] As explained above, the trigger-type liquid ejector 1 of this embodiment comprises the ejector body 2 that is attached to the container body A containing the liquid, and the nozzle member 3 that is attached to the ejector body 2 and has the ejection holes 3a that eject the liquid. The ejector body 2 comprises the vertical supply tube section 10 that sucks up the liquid in the container body A, and the trigger mechanism 40 that has the trigger section 5 that is arranged so that it can move rearward while being biased forward, and causes the liquid to flow from inside the vertical supply tube section 10 towards the ejection holes 3a by the rearward movement of the trigger section 5. The trigger mechanism 40 comprises a cylinder 41 that is open at its front end and communicates at its rear end with the interior of the vertical supply tube section 10, and a trigger member 42 that is connected to the trigger section 5 and has a spring 43 that is connected to the trigger section 5. The trigger 5 includes a piston 42 arranged inside the cylinder 41 so as to be movable in the front-rear direction, a spring bearing 44 attached to a front-end opening 410 of the cylinder 41, and a biasing member 43 arranged between the spring bearing 44 and the trigger portion 5 and biasing the trigger portion 5 forward, the spring bearing 44 including a flange portion 441 covering a front end surface 411 of the front-end opening 410 of the cylinder 41, a surrounding cylindrical portion 442 connected to the radially outer side of the flange portion 441 and surrounding an outer circumferential surface 412 of the front-end opening 410 of the cylinder 41, and a plurality of engagement holes 443 penetrating the surrounding cylindrical portion 442 in the radial direction, and the cylinder 41 includes a plurality of engagement protrusions 413 inserted radially into the plurality of engagement holes 443. This configuration allows the spring bearing 44 and the cylinder 41 to mesh with each other, thereby preventing the spring bearing 44 from coming off. If the spring bearing 44 were to come off the cylinder 41, the internal pressure of the container body A would increase, making it easier for the piston 42 to move forward, leading to liquid leakage. However, according to this embodiment, this liquid leakage can be prevented.

[0058] In this embodiment, the plurality of engagement holes 443 and some of the plurality of engagement protrusions 413 are arranged on both the left and right sides of the upper half of the region excluding the top of the front end opening 410 of the cylinder 41. With this configuration, when a force is applied to the front end opening 410 of the cylinder 41 from diagonally above, the spring bearing 44 is less likely to come off from the front end opening 410 of the cylinder 41.

[0059] Although one embodiment of the present invention has been described above, this embodiment is presented as an example and is not intended to limit the scope of the invention. The embodiment of the present invention can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. Furthermore, the embodiment of the present invention and its modifications include, for example, those that can be easily imagined by a person skilled in the art, those that are substantially the same, and those that are equivalent.

[0060] For example, in the above embodiment, a configuration was described in which a storage cylinder 70 and a storage plunger 80 are provided to continuously spray liquid, but the configuration of this embodiment can also be applied to a normal trigger-type liquid sprayer that does not have a storage cylinder 70 or a storage plunger 80. [Explanation of symbols]

[0061] 1 trigger-type liquid jet 2 Squirt body 3 Nozzle member 3a spout hole 4 Cover body 5 Trigger section 6 Stopper 10 Vertical supply tube 11 Pipe 20 Connecting tube 21 Occlusion 30 Mounting cap 32 Cylinder tube 40 Trigger mechanism 41 cylinders 42 Piston 43 biasing member 44 Spring holder 50 Ball Valve 60 Reservoir valve 70 Storage cylinder 70a Storage space 71 Supply hole 72 Injection cylinder part 80 Reservoir plunger 90 Plunger biasing member 100 relay member 410 Front end opening 411 Front end surface 412 Outer surface 413 Engagement protrusion 440 Fitting cylinder 440a mating protrusion 441 Flange 442 Enclosing tube 443 Engagement hole A Container body O1 axis O2 axis

Claims

1. an ejector body attached to a container containing a liquid; a nozzle member attached to the ejector body and having ejection holes formed therein for ejecting the liquid, The ejector body includes: a vertical supply tube portion that sucks up the liquid in the container body; a trigger mechanism having a trigger portion arranged so as to be movable rearward in a forward biased state, and causing the liquid to flow from inside the vertical supply cylindrical portion toward the ejection hole side by the rearward movement of the trigger portion, The trigger mechanism comprises: a cylinder having an open front end and a rear end communicating with the interior of the vertical supply tube portion; a piston connected to the trigger portion and disposed inside the cylinder so as to be movable in the forward and backward directions; a spring support attached to a front end opening of the cylinder; a biasing member disposed between the spring receiver and the trigger portion and biasing the trigger portion forward, The spring bearing is a flange portion covering a front end surface of a front end opening of the cylinder; a surrounding cylinder portion provided radially outward of the flange portion and surrounding an outer peripheral surface of a front end opening of the cylinder; a plurality of engagement holes that penetrate the surrounding cylindrical portion in a radial direction, The cylinder includes a plurality of engagement protrusions that are radially inserted into the plurality of engagement holes. Trigger-type liquid squirt.

2. some of the engagement holes and the engagement protrusions are arranged on both the left and right sides of an upper half region of the front end opening of the cylinder excluding a top portion thereof; The trigger-type liquid ejector according to claim 1 .

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