Trigger type liquid spray

Abstract

To improve quality by enabling the suspension of an unintended liquid spray, liquid spill, and the like.SOLUTION: There is provided a trigger type liquid spray 1, comprising a spray body 2 attached on a container body A, a nozzle member 3 where the spray hole 4 is formed, and a stopper member 5 rotatable to the spray body, where the stopper member comprises a stopper piece 142, moving between a regulation position P1, regulating a rearward movement of the trigger part by coming in contact with, or approaching, a trigger part 81 with rotation on the nozzle axis, and an allowable position, separating from the trigger part to allow a rearward movement of the trigger part, and where the spray body keeps the joint of a removal piece 150 via a breakable weakened part 152, the removal piece being jointed so that an engagement part 151 may be formed between the removal piece and the spray body, and the stopper piece being engaged with the engagement part when positioned at the regulation position.SELECTED DRAWING: Figure 1

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 within a container by operating a trigger portion and eject the liquid through an ejection hole. One known example of this type of trigger-type liquid ejector is shown in Patent Document 1 below, which comprises a ejector body that is attached to a container body that contains liquid, and a nozzle member that has an ejection hole for ejecting the liquid.

[0003] The ejector body includes a vertical supply tube portion that sucks up the liquid in the container body, and a trigger portion that is arranged so as to be movable rearward in a forward biased state and that supplies liquid from within the vertical supply tube portion to the ejection hole side by moving rearward. The nozzle member is combined with the ejector main body via a relay member and is rotatably attached to the relay member. A regulating portion that functions as a stopper for the trigger portion is further connected to the nozzle member. The regulating portion is displaceable between a regulating position that regulates the rearward movement of the trigger portion as the nozzle member rotates and a permitting position that permits the rearward movement. For example, when the trigger-type liquid ejector is in commercial distribution or on display, the regulating portion is positioned at the regulating position to regulate the rearward movement of the trigger portion. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-32396 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the above-mentioned conventional trigger-type liquid ejectors, there was a risk that the nozzle member would rotate due to an unintended external force or the like during product distribution, product display, etc., and the regulating part would come out of the regulating position. Therefore, there was a possibility that the unintended backward movement of the trigger part would cause inconvenience such as liquid ejection or leakage.

[0006] The present invention has been made in consideration of the above circumstances, and its object is to provide a trigger-type liquid ejector of improved quality that can suppress unintended liquid ejection, liquid leakage, etc. [Means for solving the problem]

[0007] (1) A trigger type liquid ejector according to the present invention comprises an ejector body attached to a container body containing liquid, a nozzle member attached to the ejector body and having an ejection hole for ejecting liquid, and a stopper member combined with the nozzle member and rotatable about the nozzle axis of the nozzle member relative to the ejector body, the ejector body comprising a vertical supply tube portion that sucks up liquid in the container body, and a trigger portion arranged to be movable rearward in a forward biased state, and a trigger mechanism for circulating liquid from within the vertical supply tube portion toward the ejection hole side by the rearward movement of the trigger portion, and the stopper member The nozzle member is provided with a stopper piece that is disposed between the trigger portion and the ejector body and moves between a restricting position where it restricts the rearward movement of the trigger portion by abutting or approaching the trigger portion and an allowing position where it moves away from the trigger portion and allows the rearward movement of the trigger portion as the stopper piece rotates around the nozzle axis, and a removal piece is connected to the ejector body via a weakened portion that is easily broken, and the removal piece is connected so that an engagement portion is formed between the removal piece and the ejector body, and the stopper piece is engaged with the engagement portion when located at the restricting position.

[0008] According to the trigger type liquid ejector of the present invention, the stopper piece is disposed in the locking hole while being locked in the locking hole during product distribution, product display, etc., so that the stopper member can be maintained in a positional state in the regulated position. As a result, even if an unintended external force acts on the stopper member, the stopper member can be prevented from rotating around the nozzle axis, and the stopper piece can be prevented from coming out of the regulated position. Therefore, unintended backward movement of the trigger part can be prevented, and liquid ejection or leakage can be prevented.

[0009] When using a trigger-type liquid ejector, the removal piece can be removed by applying an external force such as a pulling force or a twisting force while holding the removal piece with the fingertips, etc., to break the weakened portion. This releases the engagement between the stopper piece and the locking portion. Therefore, the stopper member can be rotated around the nozzle axis to move the stopper piece from the restricted position to the permitted position. This allows the trigger portion to be operated to move rearward, causing the liquid to flow from inside the vertical supply tube portion toward the nozzle hole side, and as a result, the liquid can be sprayed outward from the nozzle hole. Furthermore, when the operation of the trigger part is released after the liquid has been sprayed, the trigger part can be moved back to its original position by the forward biasing force, allowing the liquid in the container body to be sucked up into the vertical supply tube part, preparing for the next spray.

[0010] In particular, unless the removal piece is removed, the stopper piece remains engaged with the engagement portion, which can prevent the stopper member from rotating unexpectedly due to an unintended external force, etc. In addition, it is possible to prevent unauthorized operation of the trigger portion, etc. Therefore, by visually checking the broken state of the weakened portion and the presence of the removal piece, it is possible to know at a glance whether the trigger portion has been operated unauthorizedly, etc. Therefore, it is possible to provide a trigger-type liquid ejector with improved product quality and reliability.

[0011] (2) The trigger mechanism includes a main cylinder arranged behind the trigger portion, a main piston which pressurizes the main cylinder as the trigger portion moves backward to supply the liquid in the main cylinder into the vertical supply tube portion and reduces the pressure in the main cylinder as the trigger portion moves back to its original position forward to suck up the liquid in the container body into the vertical supply tube portion and introduce it into the main cylinder, and a pair of guide plates arranged to face each other in the left-right direction so as to sandwich a part of the main piston protruding forward from the main cylinder, wherein the removal piece is arranged below the guide plates, the weakened portion is arranged at intervals in the front-rear direction, and connects the guide plate and the removal piece at two points, and the engagement portion may be formed between the removal piece, the guide plate, and the two weakened portions.

[0012] In this case, by operating the trigger part to move it backward, the inside of the main cylinder can be pressurized using the main piston, and the liquid in the main cylinder can be supplied into the vertical supply tube part. This allows the liquid to flow from inside the vertical supply tube part toward the ejection hole side, and the liquid can be ejected from the ejection hole to the outside. After the liquid is ejected, the inside of the main cylinder can be depressurized using the main piston in conjunction with the restoration movement of the trigger part, so that the liquid in the container body can be sucked up into the vertical supply tube part and introduced into the main cylinder. This makes it possible to prepare for the next ejection.

[0013] In particular, since the removal piece is connected to the lower portion of the guide plates located on both the left and right sides of the main piston via two weakened portions at the front and rear, the posture of the removal piece can be stably maintained. Moreover, since the locking portion is formed between the removal piece, the guide plate, and the two weakened portions, it is an enclosed space (hole). Therefore, the posture of the stopper piece when it is locked to the locking portion can be stabilized. Therefore, when the stopper member is located at the restricting position, the stopper piece can be more reliably and stably locked to the locking hole.

[0014] (3) A receiving member may be provided that is fitted from the front into the inside of the main cylinder, and the guide plate may be formed so as to protrude forward from the receiving member. A coil spring may be disposed between the trigger portion and the receiving member, outside the main cylinder, and surrounding the main piston from the outside, and biasing the trigger portion forward.

[0015] In this case, it is possible to prevent the liquid in the main cylinder from coming into contact with the coil spring. Therefore, it is possible to select a wide range of materials for the coil spring regardless of the type of liquid, and it is easy to maintain the spring characteristics of the coil spring for a long period of time. Therefore, it is possible to use not only metal materials but also resin springs, etc., as the material for the coil spring. Effect of the Invention

[0016] According to the present invention, it is possible to obtain a trigger type liquid ejector with improved quality that can suppress unintended ejection of liquid, liquid leakage, etc. [Brief description of the drawings]

[0017] [Figure 1] 1 is a vertical cross-sectional view showing an embodiment of a trigger type liquid ejector according to the present invention. [Diagram 2] FIG. 2 is a side view of the trigger type liquid ejector shown in FIG. 1. [Diagram 3] FIG. 2 is a front view of the trigger-type liquid ejector shown in FIG. 1. [Figure 4] 2 is a side view of the receiving member (including the removal piece) shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a trigger type liquid ejector according to the present invention will be described with reference to the drawings. In this embodiment, a ejection container having a trigger type liquid ejector attached to a container body will be described as an example.

[0019] As shown in Figure 1, the trigger-type liquid ejector 1 of this embodiment comprises a ejector body 2 which is attached to a container body A which contains liquid, a nozzle member 3 which is attached to the ejector body 2 and has an ejection hole 4 formed therein for ejecting the liquid, a stopper member 5 which is combined with the nozzle member 3 and is rotatable relative to the ejector body 2, and a cover body 6 which covers the ejector body 2. Unless otherwise specified, each component part of the trigger type liquid ejector 1 is a molded product made of synthetic resin.

[0020] (Ejector body) The ejector body 2 mainly comprises a vertical supply tube portion 10, a connecting tube portion 20, an attachment cap 30, a storage cylinder 40, a storage plunger 50, a biasing member 60, an injection tube portion 70, a trigger mechanism 80, a ball valve 90, and a storage valve 91.

[0021] In this embodiment, the central axis of the vertical supply tube portion 10 is the axis O1, the container body A side along this axis O1 is called the lower side, the opposite side is called the upper side, and the direction along the axis O1 is called the up-down direction. In addition, in a plan view seen from the up-down direction, a direction intersecting the axis O1 is called the front-rear direction, and a direction perpendicular to both the up-down direction and the front-rear direction is called the left-right direction.

[0022] Furthermore, in this embodiment, the central axis of the storage cylinder 40 is defined as an 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 storage cylinder 40. In this embodiment, the rear corresponds to one side of the axial direction along the central axis of the storage cylinder 40, and the front corresponds to the other side of the axial direction along the central axis of the storage cylinder 40. However, the axial direction along the axis O2 does not have to coincide with the front-rear direction.

[0023] The vertical supply tube portion 10 extends in the vertical direction and has the function of sucking up liquid in the container body A. The vertical supply tube portion 10 is attached to the container body A by an attachment cap 30. The upper portion of a pipe 11 that extends in the vertical direction and sucks up liquid from the container body A is fitted into the vertical supply tube portion 10.

[0024] A connecting tube portion 20 extending forward is provided at the upper end portion of the vertical supply tube portion 10. The connecting tube part 20 is formed in a cylindrical shape having an opening 21 that opens to the front of the ejector body 2, and communicates with the inside of the vertical supply tube part 10. A blocking plug 100 is attached to the opening 21 of the connecting tube part 20 from the front, blocking the opening 21.

[0025] A cylinder tube portion 110 is provided below the connection tube portion 20 and above the mounting cap 30. The cylinder tube portion 110 protrudes forward from the vertical supply tube portion 10 and opens forward. The main cylinder 82 is fitted into the cylinder tube portion 110. The main cylinder 82 is formed in a bottomed tube shape that opens forward and is closed at the rear. The inside of the main cylinder 82 is connected to the inside of the vertical supply tube portion 10.

[0026] The storage cylinder 40 is disposed above the vertical supply tube portion 10 and the connecting tube portion 20. The storage cylinder 40 extends in the front-rear direction and is disposed so as to straddle the vertical supply tube portion 10 in the front-rear direction. In the illustrated example, the storage cylinder 40 is disposed approximately parallel to the connecting tube portion 20 and the cylinder tube portion 110. Furthermore, the lower end portion of the storage cylinder 40 is integrally formed with the upper end portion of the vertical supply tube portion 10 and the upper end portion of the connecting tube portion 20.

[0027] 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 40 (a storage space 40a described later) by the rearward swinging of the trigger portion 81. Specifically, a supply hole 41 that communicates with the inside of the connecting tube portion 20 is formed in the lower part of the front end portion of the storage cylinder 40. The supply hole 41 opens to a part located rearward of the occlusion plug 100. This makes it possible to supply liquid that has passed through the vertical supply tube portion 10 and the connecting tube portion 20 to the inside of the storage cylinder 40 through the supply hole 41.

[0028] The storage plunger 50 is disposed so as to be movable in the front-rear direction along the axis O2 inside the storage cylinder 40. This allows the storage plunger 50 to slide tightly inside the storage cylinder 40 in the front-rear direction. The storage plunger 50 moves rearward as liquid is supplied into the storage cylinder 40. The storage plunger 50 blocks communication between the interior of the vertical supply tube portion 10 and the ejection hole 4 through the interior of the connecting tube portion 20, and allows communication between the interior of the vertical supply tube portion 10 and the ejection hole 4 through the interior of the connecting tube portion 20 when it moves rearward.

[0029] That is, the storage plunger 50, at the forwardmost position, blocks communication between the vertical supply tube portion 10 and the injection tube portion 70 through the connection tube portion 20, and allows communication with the ejection hole 4 through the injection tube portion 70 when moved rearward from the forwardmost position. Note that in the storage cylinder 40, the space located forward of the storage plunger 50 functions as a storage space 40a.

[0030] The storage space 40a stores the liquid that passes through the vertical supply tube portion 10 and the connection tube portion 20 and also passes through the supply hole 41. The storage space 40a expands as the storage plunger 50 moves rearward due to the supply of liquid. The storage space 40a can also communicate with the inside of the injection tube portion 70.

[0031] The biasing member 60 biases the storage plunger 50 forward. The biasing member 60 is disposed rearward of the storage plunger 50 within the storage cylinder 40. The biasing member 60 biases the storage plunger 50 forward in the initial state before the trigger portion 81 is operated. As a result, the storage plunger 50 is located at the frontmost position. The biasing member 60 is a metal coil spring disposed coaxially with the axis O2. However, for example, a resin spring or other elastic members may be used as the biasing member 60.

[0032] In the storage cylinder 40 and the storage plunger 50 configured as described above, it is possible to pressurize the liquid in the storage space 40a until the storage plunger 50 moves rearward. Thereafter, when the liquid pressure in the storage space 40a reaches a predetermined value, the storage plunger 50 moves rearward against the biasing member 60. This makes it possible to supply the liquid in the storage space 40a to the ejection hole 4 side. Therefore, the storage plunger 50 can function as a pressure accumulator valve.

[0033] The injection tube portion 70 extends forward from the storage cylinder 40. The injection tube portion 70 communicates with the inside of the vertical supply tube portion 10 through the storage cylinder 40 and the connecting tube portion 20. This allows the injection tube portion 70 to guide the liquid that has passed through the vertical supply tube portion 10, the connecting tube portion 20, and the storage cylinder 40 to the ejection hole 4.

[0034] The trigger mechanism 80 includes a trigger portion 81, a main cylinder 82, a main piston 83, a coil spring 84, and a receiving member 85. The trigger mechanism 80 is capable of circulating the liquid from inside the vertical supply tube portion 10 through the connecting tube portion 20 toward the nozzle hole 4 side by the rearward swinging of the trigger portion 81.

[0035] The trigger portion 81 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 81 is formed so as to extend in the vertical direction and is disposed below the injection tube portion 70. The upper end portion of the trigger portion 81 is journaled to a relay member 120 (described later) so as to be swingable in the front-rear direction, and the lower end portion is disposed in front of the main cylinder 82.

[0036] The main piston 83 is disposed inside the main cylinder 82 so as to be movable in the front-rear direction. The main piston 83 is movable in the front-rear direction in conjunction with the swinging of the trigger portion 81. As a result, the inside of the main cylinder 82 is pressurized and depressurized as the main piston 83 moves in the front-rear direction. The main piston 83 is formed in a topped cylindrical shape that is open to the rear and closed at the front.

[0037] As shown in Figures 1 to 4, the receiving member 85 includes a receiving tube 85a fitted into the inside of the main cylinder 82 from the front, an annular flange portion 85b protruding from the front end of the receiving tube 85a toward the radially outer side of the main cylinder 82, and a connecting piece 85c extending rearward from the flange portion 85b and inserted between the connecting tube portion 20 and the main cylinder 82 from the front.

[0038] The receiving cylinder 85a is located forward of the main piston 83. Therefore, the main piston 83 is movable in the front-rear direction within a region behind the receiving cylinder 85a within the main cylinder 82. The main piston 83 is positioned at the frontmost position by the receiving cylinder 85a. The connecting piece 85c is fitted between the connecting tube portion 20 and the main cylinder 82. As a result, the entire receiving member 85 is integrally combined with the main cylinder 82.

[0039] A pair of guide plates 86 are formed on the flange portion 85b so as to face each other in the left-right direction with the trigger portion 81 sandwiched therebetween. The guide plates 86 are formed so as to protrude forward from the flange portion 85b. As a result, the guide plates 86 are arranged so as to face each other in the left-right direction so as to sandwich a portion of the main piston 83 that protrudes forward from the main cylinder 82. The guide plates 86 are formed so as to be located on both the left and right sides of the trigger portion 81 when the trigger portion 81 is located at the frontmost swing position.

[0040] 1, the coil spring 84 is made of, for example, metal. The coil spring 84 is disposed so as to surround the main piston 83 from the outside, and is disposed forward of the receiving cylinder 85a. The coil spring 84 is disposed in a compressed state so that its rear end contacts the receiving cylinder 85a and its front end contacts the trigger portion 81. As a result, the coil spring 84 biases the trigger portion 81 and the main piston 83 forward.

[0041] The ball valve 90 and the storage valve 91 are provided in the vertical supply tube portion 10 . The ball valve 90 is a check valve that blocks communication between the inside of the container body A and the inside of the main cylinder 82 through the vertical supply tube section 10 when the inside of the main cylinder 82 is pressurized, and allows communication between the inside of the container body A and the inside of the main cylinder 82 through the vertical supply tube section 10 by displacing upward when the inside of the main cylinder 82 is depressurized.

[0042] A storage valve 91 is disposed above the ball valve 90. The storage valve 91 is a check valve that allows liquid to be supplied from the vertical supply tube portion 10 through the connecting tube portion 20 to the storage cylinder 40 and prevents liquid from flowing out from the storage cylinder 40 through the connecting tube portion 20 to the vertical supply tube portion 10.

[0043] The cover body 6 is formed so as to cover the entire vertical supply tube portion 10 except for the lower end portion, the entire injection tube portion 70, and the entire storage cylinder 40 from at least both left and right sides and above.

[0044] (Relay parts) A relay member 120 that connects between the injection tube portion 70 and the nozzle member 3 is attached to the injection tube portion 70. The relay member 120 is attached to the injection tube portion 70 from the front. The relay member 120 includes a wall portion 121 located forward of the injection opening 71 of the injection tube portion 70 and disposed opposite the injection opening 71, a first relay tube portion 122 extending rearward from the wall portion 121 and fitted onto the injection tube portion 70, a second relay tube portion 123 extending forward from the wall portion 121, and a guide shaft 124 located inside the second relay tube portion 123 and extending forward from the wall portion 121.

[0045] The interior of second relay tube portion 123 is in communication with the interior of injection tube portion 70 through communication hole 125 formed in wall portion 121. A communication groove 126 extending in the front-rear direction is formed on the outer circumferential surface of guide shaft 124. A plurality of communication grooves 126 are formed around the axis of guide shaft 124 at intervals.

[0046] (Nozzle member) The nozzle member 3 is attached to the second relay cylindrical portion 123. As a result, the nozzle member 3 is attached to the ejector main body 2 via the relay member 120. The nozzle member 3 is disposed forward of the wall portion 121 of the relay member 120 and includes a nozzle wall portion 130 in which an ejection hole 4 is formed, and an outer fitting tube portion 131 extending rearward from the nozzle wall portion 130 and fitted onto the second relay tube portion 123 from the front.

[0047] An inner cylinder portion 132 that fits onto the guide shaft 124 protrudes rearward from a portion of the nozzle wall portion 130 that is located inside the outer fitting cylinder portion 131. This makes it possible to guide liquid to the ejection hole 4 through a communication groove 126 formed in the guide shaft 124. The central axis of the nozzle member 3 passing through the center of the ejection hole 4 in the front-rear direction is defined as an axis (nozzle axis) O3. Therefore, the axis O3 extends in the front-rear direction.

[0048] (Stopper member) As shown in FIGS. 1 to 3, the nozzle member 3 is combined with a stopper member 5 that restricts the rearward swing of the trigger portion 81. The stopper member 5 comprises a stopper tube 140 attached to the outer fitting tube portion 131 of the nozzle member 3, a connecting portion 141 formed to extend downward from the stopper tube 140, and a stopper piece 142 formed integrally with the connecting portion 141.

[0049] The stopper cylinder 140 is attached to the outer fitting cylinder portion 131 of the nozzle member 3 so as to be rotatable about an axis O3. This makes the entire stopper member 5 rotatable relative to the ejector main body 2. The connecting portion 141 is formed so as to wrap around the trigger portion 81 in the left-right direction from the front thereof, and is formed so as to extend rearward beyond the trigger portion 81 .

[0050] The stopper piece 142 is formed so as to protrude inward in the left-right direction from the rear end of the connecting portion 141. In the illustrated example, the stopper piece 142 is formed in a plate shape whose length in the front-rear direction is longer than its thickness in the up-down direction when viewed from the side of the trigger-type liquid ejector 1. The stopper piece 142 is disposed between the trigger portion 81 and the main cylinder 82, and is capable of moving between a restricting position P1 in which the stopper piece 142 restricts the rearward movement of the trigger portion 81 by abutting or approaching the trigger portion 81 from the rear as the stopper member 5 rotates about the axis O3, and a permissive position P2 (see Figure 3) in which the stopper piece 142 is moved away from the trigger portion 81 and permits the rearward movement of the trigger portion 81. In particular, when the stopper piece 142 is located at the regulating position P1, it enters from the left and right directions into the locking hole (locking portion) 151 formed by the removal piece 150 described later, and is positioned within the locking hole 151 in a state where it is locked in the locking hole 151.

[0051] (Removed piece) 1 to 4, the removal piece 150 is connected to the ejector body 2 via an easily breakable weakened portion 152. Specifically, the removal piece 150 is connected to one of a pair of guide plates 86 in a receiving member 85 combined with the main cylinder 82 via the weakened portion 152. The removal piece 150 is formed in a plate shape having a thickness in the left-right direction equal to that of the guide plate 86, and also has a length in the front-rear direction equal to that of the guide plate 86 when viewed from the side of the trigger-type liquid ejector 1. The removal piece 150 is disposed below the guide plate 86 with a gap between it and the guide plate 86.

[0052] The upper edge of the removal piece 150 and the lower edge of the guide plate 86 are connected via weakened portions 152. In this embodiment, the weakened portions 152 are disposed at intervals in the front-rear direction, and connect the removal piece 150 and the guide plate 86 at two points (see FIG. 4). It should be noted that weakened portion 152 need only be easily broken, and may be thin-walled or narrow to easily break, or may have a structure that easily induces breakage, such as perforations.

[0053] A locking hole (locking portion) 151 that opens in the left-right direction is formed between the removal piece 150 configured in this manner, the guide plate 86, and the two weakened portions 152. The locking hole 151 has the same length in the front-rear direction and the up-down direction as the stopper piece 142 in a side view of the trigger-type liquid ejector 1.

[0054] Therefore, when the stopper piece 142 is located at the regulating position P1, it is disposed in the locking hole 151 in a state in which rattle is suppressed. In particular, the stopper piece 142 is formed with a locking protrusion 142a that is locked to the opening edge of the locking hole 151 by undercut fitting, as shown in Figures 1 to 3. As a result, when the stopper piece 142 is located at the regulating position P1, it is prevented from coming out of the locking hole 151. Therefore, it is difficult to rotate the stopper member 5 unless the removal piece 150 is removed. Therefore, the stopper member 5 is maintained in a state positioned at the regulating position P1.

[0055] (Function of trigger-type liquid ejector) Next, a case where the trigger type liquid ejector 1 configured as described above is used will be described. It is assumed that each part of the trigger type liquid ejector 1 is filled with liquid and that the liquid can be sucked up into the vertical supply tube part 10.

[0056] In the trigger-type liquid ejector 1 of this embodiment, as shown in Figures 1 to 3, when the product is distributed, displayed, etc., the stopper piece 142 is positioned within the locking hole 151 in a state where it is locked in the locking hole 151, so that the stopper member 5 can be maintained positioned in the regulating position P1. As a result, even if an unintended external force or the like acts on the stopper member 5, the stopper member 5 can be prevented from rotating about the axis O3, and the stopper piece 142 can be prevented from moving out of the regulating position P1. Therefore, unintended backward movement of the trigger portion 81 can be prevented, and the ejection or leakage of liquid can be suppressed.

[0057] Next, when using the trigger-type liquid ejector 1, the weakened portion 152 can be broken and the removal piece 150 can be removed by applying an external force such as a pulling force or a twisting force while pinching the removal piece 150 with the fingertips or the like. This allows the stopper piece 142 to be released from the engagement with the engagement hole 151. Therefore, the stopper member 5 can be rotated around the axis O3 to move the stopper piece 142 from the restricted position P1 to the permitted position P2 (see FIG. 3). This allows the trigger portion 81 to be allowed to move backward.

[0058] Next, by operating the trigger portion 81 so as to pull it backward against the biasing force of the coil spring 84, the inside of the main cylinder 82 can be pressurized, and the liquid in the main cylinder 82 can be supplied to the storage space 40a of the storage cylinder 40 through the inside of the vertical supply tube portion 10. This allows the liquid to be stored (filled) in the storage space 40a while moving the storage plunger 50 backward against the biasing force of the biasing member 60. Then, by moving the storage plunger 50 backward, the liquid in the storage space 40a with increased pressure can be ejected forward from the ejection hole 4.

[0059] Therefore, every time the trigger portion 81 is pulled rearward, liquid can be ejected from the ejection hole 4, and the storage plunger 50 can be moved rearward to store the liquid in the storage space 40a. Thereafter, by releasing the trigger portion 81, the trigger portion 81 is moved forward by the elastic restoring force (biasing force) of the coil spring 84, while the main piston 83 is moved back to its original state. This allows the liquid in the container body A to be sucked up into the vertical supply tube portion 10 and introduced into the main cylinder 82. This makes it possible to prepare for the next ejection.

[0060] When the operation of the trigger portion 81 toward the rear is stopped, the supply of liquid to the storage space 40a stops, but the storage plunger 50 starts to move forward toward the most forward position due to the biasing force of the biasing member 60. This allows the liquid in a pressurized state stored in the storage space 40a to be continuously sprayed forward through the spray hole 4. Therefore, even if the trigger portion 81 is not operated, the liquid can be sprayed, and continuous spraying of the liquid can be performed.

[0061] According to the trigger type liquid ejector 1 of this embodiment, the stopper piece 142 remains locked in the locking hole 151 unless the removal piece 150 is removed during product distribution, product display, etc., so that it is possible to suppress inconveniences such as the stopper member 5 rotating unexpectedly due to an unintended external force, etc. In addition, it is possible to prevent unauthorized operation of the trigger part 81. Therefore, by visually checking the broken state of the weakened part 152 and the presence of the removal piece 150, it is possible to grasp at a glance whether the trigger part 81 has been operated unauthorizedly, etc. Therefore, it is possible to obtain a trigger type liquid ejector 1 with improved product quality and reliability. Furthermore, if the stopper member 5 is forcibly rotated, there is a high possibility that the weakened portion 152 will break. Therefore, any tampering with the stopper member 5 can be detected in advance by visually checking the broken state of the weakened portion 152.

[0062] Furthermore, since the guide plates 86 are located on both the left and right sides of the trigger portion 81, the trigger portion 81 can be moved rearward while being guided by the guide plates 86. Therefore, the trigger portion 81 can be moved rearward smoothly while suppressing rattling in the left-right direction, improving operability. Since the removal piece 150 is connected below the guide plate 86 via the two weakened portions 152 at the front and rear, the posture of the removal piece 150 can be stably maintained. Moreover, the locking hole 151 is formed between the removal piece 150, the guide plate 6, and the two weakened portions 152, and is therefore an enclosed space (hole). Therefore, the posture of the stopper piece 142 when locked in the locking hole 151 can be stabilized. Therefore, when the stopper member 5 is located at the restriction position P1, the stopper piece 142 can be more reliably and stably locked in the locking hole 151.

[0063] Furthermore, the coil spring 84 is disposed so as to surround the main piston 83 from the outside, and is therefore disposed outside the main cylinder 82. This makes it possible to prevent the liquid in the main cylinder 82 from coming into contact with the coil spring 84. This allows a wide range of materials to be selected for the coil spring 84 regardless of the type of liquid, and makes it easy to maintain the spring characteristics of the coil spring 84 over a long period of time. Therefore, the material for the coil spring 84 is not limited to metal, and for example, a resin spring or the like may be used. In addition, since the coil spring 84 is disposed inside the pair of guide plates 86, it is concealed by the guide plates 86. Therefore, it is possible to prevent the coil spring 84 from being directly visible from the outside, and it is possible to improve the design quality, etc.

[0064] Although the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. The embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the gist of the invention. The embodiments and their modifications include, for example, those that can be easily imagined by a person skilled in the art, those that are substantially the same, those that are within the scope of the equivalents, and the like.

[0065] For example, in the above embodiment, the trigger type liquid ejector 1 is described as being capable of continuous ejection by including the storage cylinder 40 and the storage plunger 50, but is not limited to continuous ejection. Therefore, the storage cylinder 40 and the storage plunger 50 are not essential and may not be provided. In addition, when the storage plunger 50 functioning as a pressure accumulator valve is not provided, for example, a pressure accumulator valve may be provided in the injection tube portion 70, or a pressure accumulator valve may be provided in the nozzle member 3, or any other known pressure accumulator valve may be appropriately adopted.

[0066] Furthermore, in the above embodiment, the stopper member 5 is combined with the outer fitting cylindrical portion 131 of the nozzle member 3 so as to be rotatable about the axis O3, but the present invention is not limited to this case. For example, the nozzle member 3 may be configured to be rotatable about the axis O3 with respect to the relay member 120, and the nozzle member 3 and the stopper member 5 may be combined with each other so as not to rotate. Even in this case, since the stopper member 5 and the nozzle member 3 can be rotated simultaneously, it is possible to rotate the stopper member 5 relatively to the ejector body 2. Therefore, it is possible to achieve the same effects as those of the above embodiment.

[0067] In this case, it is preferable to configure the nozzle member 3 so that it can be switched between an ejection allowing state in which ejection of liquid from the ejection holes 4 is permitted and an ejection restricting state in which ejection is restricted as the nozzle member 3 rotates about the axis O3. As a result, when the stopper member 5 is located at the restricting position P1, the nozzle member 3 can be positioned in an ejection restricting state, and when the stopper member 5 is located at the permissible position P2, the nozzle member 3 can be positioned in an ejection permissible state. [Explanation of symbols]

[0068] A: Container body O3…Axis (nozzle axis) P1: Restriction position P2: Permitted position 1...Trigger-type liquid ejector 2...Ejector body 3…Nozzle member 4…Blowout hole 5...Stopper member 10…Vertical supply tube 80...Trigger mechanism 81…Trigger section 82…Main cylinder 83…Main piston 84…Coil spring 85…Receiving member 86…Guide plate 142…Stopper piece 150...removal piece 151...Latching hole (locking portion) 152...Weakened part

Claims

1. An ejector body that is attached to a container that contains a liquid; a nozzle member attached to the ejector body and having an ejection hole for ejecting liquid; a stopper member combined with the nozzle member and rotatable around a nozzle axis of the nozzle member relative to the ejector body, 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 to be movable rearward in a forward biased state, the trigger portion moving rearward to cause liquid to flow from inside the vertical supply tube portion toward the nozzle hole, the stopper member is disposed between the trigger portion and the ejector body, and includes a stopper piece that moves, as the stopper member rotates around the nozzle axis, between a restricting position where the stopper member restricts the rearward movement of the trigger portion by contacting or approaching the trigger portion, and an allowing position where the stopper member is separated from the trigger portion and allows the rearward movement of the trigger portion; A removal piece is connected to the ejector body via a weakened portion that is easily broken, The removal piece is connected to the ejector body such that a locking portion is formed between the removal piece and the ejector body, The trigger-type liquid ejector, wherein the stopper piece is engaged with the engaging portion when the stopper piece is located at the regulating position.

2. 2. The trigger type liquid ejector according to claim 1, The trigger mechanism includes: A main cylinder disposed rearward of the trigger portion; a main piston which pressurizes the inside of the main cylinder as the trigger portion moves rearward, thereby supplying the liquid in the main cylinder into the vertical supply tube portion, and which reduces the pressure in the main cylinder as the trigger portion moves back toward the front, thereby sucking up the liquid in the container body into the vertical supply tube portion and introducing it into the main cylinder; a pair of guide plates arranged to face each other in the left-right direction so as to sandwich a portion of the main piston that protrudes forward from the main cylinder; The removal piece is disposed below the guide plate, The weakened portions are disposed at intervals in the front-rear direction and connect the guide plate and the removal piece at two locations, A trigger-type liquid ejector, wherein the engagement portion is formed between the removal piece, the guide plate, and the two weakened portions.

3. 3. The trigger type liquid ejector according to claim 2, A receiving member is provided which is fitted to the inside of the main cylinder from the front, The guide plate is formed to protrude forward from the receiving member, A trigger-type liquid ejector, wherein a coil spring is disposed between the trigger portion and the receiving member, outside the main cylinder, so as to surround the main piston from the outside, and which biases the trigger portion forward.

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