Trigger-type liquid dispenser

Abstract

To provide a trigger type liquid ejector capable of suppressing overrun of a stopper member.SOLUTION: The trigger-type liquid dispenser 1 includes the stopper member 6 that is rotatable between the restriction position at which the rearward movement of the trigger member is restricted and the restriction release position at which the rearward movement of the trigger member is allowed, the dispenser main body 2 includes the rotation restricting portion side 102b that restricts the rotation of the stopper member 6, and the stopper member 6 includes the abutment R1 128 that abuts against the rotation restricting portion side 102b at the first rotation direction side R1 from the restriction position toward the restriction release position when the stopper member 6 is located at the restriction release position, and the ride-over rib 130 that is disposed on the front side of the abutment 102b 128 at the first rotation direction side wall and on which the rotation restricting portion side wall slides and rides.SELECTED DRAWING: Figure 5

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 is equipped with a stopper member that restricts the rearward movement of the trigger member when not in use. [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 trigger-type liquid ejector, the stopper member is disposed rotatably together with the nozzle member, and the stopper member is sandwiched between the trigger member and the cylinder (ejector main body), thereby restricting the rearward movement of the trigger member. In some cases, the ejector body is provided with a rotation restriction portion for the stopper member to prevent excessive rotation (overrun) when the stopper member rotates to a position that allows the trigger member to move rearward. However, since the user does not know the end point of the rotation of the stopper member until the rotation of the stopper member is restricted, there is a possibility that the momentum of the rotation will cause the stopper member to overrun.

[0005] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a trigger-type liquid ejector that can suppress overrun of the stopper member. [Means for solving the problem]

[0006] (1) The trigger-type liquid ejector of the present invention comprises: an ejector body that is attached to a container body containing liquid and has a vertical supply tube section that sucks up the liquid from the container body; a nozzle member that is attached to the ejector body and has an ejection hole formed therein for ejecting the liquid; a trigger member that is arranged on the ejector body so as to be movable rearward while being biased forward, and that causes liquid to flow from inside the vertical supply tube section to the ejection hole when it moves rearward; and a stopper member that is attached to the nozzle member and can rotate between a restricting position that restricts the rearward movement of the trigger member and a release position that allows the rearward movement of the trigger member, wherein the ejector body comprises a rotation restricting section that restricts the rotation of the stopper member, and the stopper member comprises: an abutment wall that abuts against the rotation restricting section in a first rotation direction from the restricting position toward the release position when the stopper member is positioned in the release position; and an overriding rib that is positioned forward of the abutment wall in the first rotation direction and that the rotation restricting section slides over.

[0007] In the trigger-type liquid ejector according to the present invention, the trigger member can be moved backward by rotating the stopper member from the restricting position to the releasing position. When the trigger member is operated to move backward, the vertical supply tube sucks up the liquid inside the container body and ejects the liquid to the outside through the ejection hole. Here, the ejector body includes a rotation restricting portion that restricts rotation of the stopper member. The stopper member, when positioned at the restriction release position, also includes a stop wall that abuts against the rotation restricting portion in a first rotation direction from the restriction position toward the restriction release position, and a jumping-over rib that is disposed forward of the abutting wall in the first rotation direction and that the rotation restricting portion slides over. This allows the rotation restricting portion to jump over the jumping-over rib before abutting against the abutting wall, giving the user a clicking sensation. Therefore, the user can know the end point of the rotation of the stopper member from the clicking sensation felt immediately before the rotation restricting portion abuts against the abutting wall, thereby preventing the stopper member from overrunning.

[0008] (2) The nozzle member may be rotatably arranged with respect to the ejector body together with the stopper member, and when the stopper member is positioned in the unrestricted position, it may connect the ejection hole to the inside of the vertical supply tube portion, and when the stopper member is positioned in the restricted position, it may block the communication between the ejection hole and the inside of the vertical supply tube portion.

[0009] In this case, when the stopper member is positioned in the release position, the rotation restriction portion engages with the overriding rib, maintaining a state in which liquid can be sprayed, thereby preventing problems such as the liquid spray pattern changing during use.

[0010] (3) The overriding rib may have a slope that inclines in a radial direction intersecting the rotation center axis of the stopper member so as to approach the rotation restricting portion as it moves toward a second rotation direction opposite to the first rotation direction.

[0011] In this case, the rotational resistance gradually increases as the stopper member approaches the end point of its rotation, which reduces the momentum of the rotation just before the rotation restricting portion hits the abutment wall, thereby preventing the stopper member from overrunning. [Effects of the Invention]

[0012] According to the trigger-type liquid ejector of the present invention, overrun of the stopper member can be suppressed. [Brief explanation of the drawings]

[0013] [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. [Figure 3] FIG. 4 is a rear view of the stopper member according to the embodiment of the present invention. [Figure 4] 1 is a front view of a main part of a trigger-type liquid ejector when a stopper member according to an embodiment of the present invention is located in a restricting position. FIG. [Figure 5]1 is a front view of a main part of a trigger-type liquid ejector when a stopper member according to an embodiment of the present invention is located in a restriction release position. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0014] 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.

[0015] As shown in Figure 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 an ejection hole 3a formed therein for ejecting the liquid, a cover body 4 that covers the sprayer body 2 and the nozzle member 3, a trigger member 5 that is arranged on the sprayer body 2 in a forward-biased state so that it can move rearward, and that causes liquid to flow from the sprayer body 2 to the nozzle member 3 when moved rearward, and a stopper member 6 that is movable between a restricting position that restricts the rearward movement of the trigger member 5 and a restricting release position that allows the trigger member 5 to move rearward. Unless otherwise specified, each component part of the trigger-type liquid ejector 1 is a molded product made of synthetic resin.

[0016] The ejector body 2 mainly comprises a vertical supply tube section 10, a connecting tube section 20, an attachment cap 30, a pump section 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.

[0017] In this embodiment, the central axis of the vertical supply tube portion 10 is defined as axis O1, the side of the container body A along this axis O1 is defined as the lower side, and the opposite side is defined as the upper side, and the direction along axis O1 is defined as the up-down direction. Furthermore, in a plan view viewed from the up-down direction, a direction intersecting 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. Furthermore, in this embodiment, the central axis of the ejection hole 3a is defined as axis O2. In this embodiment, 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 ejection hole 3a. Furthermore, in this embodiment, axis O3 is defined as the central axis of the storage cylinder 70. In this embodiment, axis O3 is located below axis O2 and extends in the front-rear direction. However, axis O2 and axis O3 may or may not coincide with each other.

[0018] 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.

[0019] 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.

[0020] A cylinder tube portion 32 is provided below the connecting tube portion 20 and above the mounting cap 30. The cylinder tube portion 32 protrudes forward from the vertical supply tube portion 10 and is open forward. A main cylinder 41 of the pump portion 40 is fitted into the cylinder tube portion 32. The main cylinder 41 is formed in a bottomed cylindrical shape that is open forward and closed at the rear. The inside of the main cylinder 41 is connected to the inside of the vertical supply tube portion 10.

[0021] The pump section 40 includes a main cylinder 41, a main piston 42, and a coil spring (biasing member) 43. The pump section 40 is capable of circulating the liquid from the vertical supply tube section 10 through the connecting tube section 20 toward the ejection hole 3a side by swinging the trigger member 5 rearward.

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

[0023] The main piston 42 is biased forward by the biasing force of the coil spring 43 via the trigger member 5. As the trigger member 5 swings rearward, the main piston 42 moves rearward and is pushed into the main cylinder 41. When the trigger member 5 is in the forward-most swing position, the main piston 42 is located at the corresponding forward-most position.

[0024] The coil spring 43 is made of, for example, metal. The coil spring 43 is disposed coaxially with the main piston 42 and the main cylinder 41, and biases the trigger member 5, to which the main piston 42 is connected, forward. The coil spring 43 is disposed between a spring receiver 44 (spring receiver) attached to an opening in the front of the main cylinder 41, and the trigger member 5. However, the material of the coil spring 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 section 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 main cylinder 41 through the inside of the vertical supply tube section 10 when the inside of the main cylinder 41 is pressurized, and displaces upward when the inside of the main cylinder 41 is depressurized, thereby allowing communication between the inside of the container body A and the inside of the main cylinder 41 through the inside of the vertical supply tube section 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 trigger member 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 member 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 of the trigger member 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 is disposed in front of the main cylinder 41.

[0029] 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. When the trigger member 5 swings rearward, 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).

[0030] 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.

[0031] The storage plunger 80 is disposed in the storage cylinder 70 so as to be movable in the front-to-rear direction along the axis O3. 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.

[0032] 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.

[0033] 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.

[0034] 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 member 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.

[0035] The plunger biasing member 90 is a metal coil spring disposed coaxially with the axis O3. However, for example, a resin spring or other elastic members may be used as the plunger biasing member 90.

[0036] 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.

[0037] 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.

[0038] A relay member 100 that connects the injection tube portion 72 and the nozzle member 3 is attached to the front end of the injection tube portion 72. The relay member 100 is attached to the front of the injection tube portion 72. The relay member 100 includes a first relay tube portion 101 that is fitted onto the injection tube portion 72, a partition wall portion 102 that is connected to the front end of the first relay tube portion 101 and is disposed opposite the opening of the injection tube portion 72, a guide shaft 103 that extends forward from the partition wall portion 102, and a second relay tube portion 104 that is located radially outward of the guide shaft 103 and extends forward from the partition wall portion 102.

[0039] 2, a communication hole 102a that communicates with the opening of the injection tube portion 72 is formed in a portion of the partition portion 102 that is located above the guide shaft 103 and inside the second relay tube portion 104. As a result, the interior of the second relay tube portion 104 communicates with the interior of the injection tube portion 72 through the communication hole 102a. A rotation restricting portion 102b that protrudes forward is formed in a portion of the partition portion 102 that is located below the second relay tube portion 104. The rotation restricting portion 102b restricts the rotation of the stopper member 6, as will be described later.

[0040] The nozzle member 3 is attached to the second relay cylindrical portion 104. As a result, the nozzle member 3 is attached to the ejector main body 2 via the relay member 100. The nozzle member 3 includes a mounting cylindrical portion 110 fitted onto the second relay cylindrical portion 104 from the front, and a nozzle wall portion 111 connected to the front end of the mounting cylindrical portion 110 and having an ejection hole 3a formed therein. The mounting cylindrical portion 110 is attached to the second relay cylindrical portion 104 so as to be rotatable about the axis O2 while being prevented from slipping out toward the front. As a result, the nozzle member 3 is combined with the relay member 100 so as to be rotatable about the axis O2.

[0041] A first nozzle inner cylinder 112 and a second nozzle inner cylinder 113 are provided to protrude rearward from a portion of the nozzle wall 111 located inside the mounting cylinder 110. The first nozzle inner cylinder 112 is rotatably fitted inside the second relay cylinder 104, and seals the gap between the nozzle member 3 and the relay member 100. The second nozzle inner cylinder 113 is located radially inside the first nozzle inner cylinder 112, and is rotatably fitted around the guide shaft 103.

[0042] A notched groove extending in the front-to-rear direction is formed on the inner peripheral surface of the second nozzle inner cylinder 113. Furthermore, a spin flow path 114 that can communicate with the notched groove is formed between the rear surface of the nozzle wall 111 and the front end surface of the guide shaft 103. Therefore, the liquid supplied into the second relay cylinder 104 through the communication hole 102a passes through the gap between the guide shaft 103 and the second nozzle inner cylinder 113 and the spin flow path 114, and is spun and ejected forward from the ejection hole 3a.

[0043] The nozzle member 3 can be rotated about the axis O2 to switch between communication with the gap (notched groove) between the guide shaft 103 and the second nozzle inner cylindrical portion 113 and the spin flow path 114. The nozzle member 3 also includes a nozzle cylinder portion 115 that protrudes forward from the nozzle wall portion 111 and surrounds the ejection hole 3a. A recess is formed on the outer peripheral surface of the nozzle cylinder portion 115 into which the rotation restriction piece 129 of the stopper member 6 fits.

[0044] The stopper member 6 is arranged radially outside the nozzle member 3 and comprises a stopper main body tubular portion 121 which rotates together with the nozzle member 3 around the central axis of the ejection hole 3a, a stopper regulating portion 122 which is interposed between the trigger member 5 and the ejector main body 2 when the stopper member 6 is positioned in the regulating position shown in Figures 1 and 4 and which disengages from between the trigger member 5 and the ejector main body 2 when the stopper member 6 is positioned in the unregulating position shown in Figure 5, and a stopper connecting portion 123 which connects the stopper main body tubular portion 121 and the stopper regulating portion 122.

[0045] When the stopper restricting portion 122 is located at a restricting position where it restricts the rearward movement of the trigger member 5, it is disposed in the gap in the front-to-rear direction between the trigger member 5 and the main cylinder 41 (more specifically, the spring receiver 44 fitted in the main cylinder 41), as shown in FIG. 1. The stopper restricting portion 122 restricts the rearward swing of the trigger member 5 by abutting against both the trigger portion 81 and the main cylinder 41. As shown in the rear view of FIG. 3, a locking piece 122a that locks with the main cylinder 41 in the circumferential direction is provided on the rear surface of the stopper restricting portion 122 and protrudes rearward. This prevents the stopper member 6 from easily rotating from the restricting position to the unrestricted position.

[0046] The stopper connecting portion 123 is formed in the shape of an arm extending radially outward from the stopper main body tubular portion 121. A stopper restricting portion 122 is provided at the radially outer end of the stopper connecting portion 123. The stopper connecting portion 123 is formed integrally with the stopper main body tubular portion 121 and is rotatable together with the stopper main body tubular portion 121.

[0047] As shown in Fig. 2, the stopper main body tubular portion 121 is fitted onto the nozzle member 3 and is rotatable together with the nozzle member 3 via rotation restricting pieces 129. The rotation restricting pieces 129 have a rib shape extending in the axial direction, and a plurality of rotation restricting pieces 129 (for example, three pieces in the circumferential direction) are provided on the inner wall surface of the stopper main body tubular portion 121 (see Fig. 3). On the other hand, the outer wall surface of the nozzle tube portion 115 of the nozzle member 3 is provided with a plurality of recesses into which the plurality of rotation restricting pieces 129 are inserted and which engage with these rotation restricting pieces 129 in the circumferential direction.

[0048] As shown in FIG. 2, the front end top wall of the stopper main body cylindrical portion 121 is provided with a tapered portion 124 whose diameter decreases toward the rear. An opening 124a is formed in the center of the tapered portion 124. The opening 124a is located in front of the ejection hole 3a. An annular flange portion 125 extending radially outward is formed at the rear end of the peripheral wall of the stopper main body cylindrical portion 121. An annular groove portion 125a is formed in the rear surface of the flange portion 125. The rotation restricting portion 102b is inserted into the annular groove portion 125a.

[0049] As shown in Fig. 3, the annular groove portion 125a is formed with an abutment wall 128 and an overcoming rib 130. The abutment wall 128 is formed to cross the annular groove portion 125a in the radial direction. The overcoming rib 130 is provided to protrude radially inward from the side wall surface on the outer periphery of the annular groove portion 125a toward the axis O2. Specifically, the overcoming rib 130 includes a slope 131 that is inclined in the circumferential direction of the annular groove portion 125a so as to protrude gradually radially inward toward the abutment wall 128, and a step 132 that connects the apex of the slope 131 to the side wall surface on the outer periphery of the annular groove portion 125a.

[0050] 4, the rotation restricting portion 102b is located below the ejection hole 3a and is formed in a generally rectangular block shape that can abut on the abutment wall 128. The radially inner side of the rotation restricting portion 102b is a flat surface that extends tangentially to the side wall surface on the inner periphery of the annular groove portion 125a, while the radially outer side of the rotation restricting portion 102b is a curved surface to avoid interference with the side wall surface on the outer periphery of the annular groove portion 125a. In other words, the radial thickness of the rotation restricting portion 102b is greatest on the abutment wall 128 side and becomes smaller toward the opposite side from the abutment wall 128.

[0051] 5, when the stopper member 6 is located at the unrestricted position, the abutment wall 128 abuts against the rotation restricting portion 102b in a first rotation direction R1 from the restricted position (see FIG. 4) of the stopper member 6 toward the unrestricted position (see FIG. 5). In addition, the overriding rib 130 is disposed forward of the abutment wall 128 in the first rotation direction R1, so that the rotation restricting portion 102b slides over and overcomes the abutment wall 128 before it abuts against the rotation restricting portion 102b.

[0052] When the stopper member 6 is located in the restriction release position (see FIG. 5), the nozzle member 3 communicates between the ejection hole 3a and the interior of the vertical supply tube portion 10. At this time, a character such as "out" is displayed on the surface of the stopper main body tube portion 121 facing upward. Furthermore, when the stopper member 6 is located in the restriction position (see FIG. 4), the nozzle member 3 blocks communication between the ejection hole 3a and the interior of the vertical supply tube portion 10. At this time, a character such as "stop" is displayed on the surface of the stopper main body tube portion 121 facing upward.

[0053] Next, a case where the trigger-type liquid ejector 1 configured as described above is used will be described.

[0054] First, in order to use the trigger-type liquid ejector 1, the stopper member 6 is rotated from the restricting position shown in Fig. 4 to the unrestricted position shown in Fig. 5. For example, the stopper connecting portion 123 to the stopper restricting portion 122 shown in Fig. 4 are grasped, and the stopper connecting portion 123 is rotated upward. When the stopper connecting portion 123 is rotated upward, the stopper restricting portion 122 is released from between the trigger member 5 and the ejector main body 2, and the restriction on the movement of the trigger member 5 can be released.

[0055] Furthermore, when the stopper connecting portion 123 is rotated upward, the stopper member 6 rotates together with the nozzle member 3 relative to the ejector body 2. As shown in Fig. 4, the ejector body 2 is provided with a rotation restricting portion 102b. When the stopper member 6 rotates in a first rotation direction R1 from the restricted position shown in Fig. 4 toward the unrestricted position shown in Fig. 5, first, the overcoming rib 130 comes into sliding contact with the rotation restricting portion 102b.

[0056] 5, the overcoming rib 130 has a slope 131 that is inclined so as to approach the rotation restricting portion 102b as it moves in a second rotation direction R2 that is opposite to the first rotation direction R1. This gradually increases the friction (rotational resistance) between the rotation restricting portion 102b and the overcoming rib 130, thereby reducing the momentum of rotation of the stopper member 6. When the rotation restricting portion 102b moves over the overcoming rib 130, the friction (rotational resistance) is released and the rotation restricting portion 102b hits the outer peripheral side wall surface of the annular groove portion 125a, giving the user a clicking sensation.

[0057] 5, the abutment wall 128 of the stopper main body tubular portion 121 abuts against the rotation restricting portion 102b in the first rotation direction R1, thereby restricting excessive rotation (overrun) of the stopper member 6. Furthermore, when the stopper member 6 is in the unrestricted position, the step 132 of the overcoming rib 130 abuts against (engages with) the rotation restricting portion 102b in the second rotation direction R2, preventing the stopper member 6 from rotating from the unrestricted position to the restricted position unless the rotation restricting portion 102b overcomes the overcoming rib 130. In other words, when the stopper member 6 is in the unrestricted position, the rotation restricting portion 102b engages with the overcoming rib 130, maintaining a state in which liquid can be ejected, thereby preventing problems such as changes in the ejection pattern of the liquid during use.

[0058] Thus, with the trigger-type liquid ejector 1 according to this embodiment, the trigger member 5 can be moved backward by rotating the stopper member 6 from the restricting position to the releasing position. When the trigger member 5 is operated to move backward, the vertical supply tube portion 10 sucks up the liquid in the container body A and ejects the liquid to the outside through the ejection holes 3a. Here, the ejector main body 2 includes a rotation restricting portion 102b that restricts the rotation of the stopper member 6. The stopper member 6 also includes an abutment wall 128 that abuts against the rotation restricting portion 102b in a first rotation direction R1 from the restricting position toward the restricting position when the stopper member 6 is located at the restriction release position, and an over-riding rib 130 that is disposed forward of the abutment wall 128 in the first rotation direction R1 and against which the rotation restricting portion 102b slides and overcomes. This allows the rotation restricting portion 102b to overcome the over-riding rib 130 before abutting against the abutment wall 128, giving the user a clicking sensation. Therefore, the user can know the end point of the rotation of the stopper member 6 from the clicking sensation felt immediately before the rotation restricting portion 102b abuts against the abutment wall 128, thereby preventing the stopper member 6 from overrunning.

[0059] As explained above, the trigger-type liquid ejector 1 of this embodiment comprises: an ejector body 2 which is attached to a container body A containing liquid and which has a vertical supply tube portion 10 that sucks up the liquid from the container body A; a nozzle member 3 which is attached to the ejector body 2 and which has ejection holes 3a formed therein for ejecting the liquid; a trigger member 5 which is arranged on the ejector body 2 in a forward biased state so as to be movable rearward, and which causes the liquid to flow from inside the vertical supply tube portion 10 to the ejection holes 3a when moved rearward; and a restricting position which is attached to the nozzle member 3 and which restricts the rearward movement of the trigger member 5. The ejector body 2 includes a rotation restricting portion 102b that restricts the rotation of the stopper member 6, and the stopper member 6 includes an abutment wall 128 that abuts against the rotation restricting portion 102b in a first rotation direction R1 from the restrictive position toward the restrictive position when the stopper member 6 is located at the restrictive position, and an overriding rib 130 that is disposed forward of the abutment wall 128 in the first rotation direction R1 and that the rotation restricting portion 102b slides over. With this configuration, overrun of the stopper member 6 can be suppressed.

[0060] Furthermore, in this embodiment, the nozzle member 3 is provided rotatably with respect to the ejector body 2 together with the stopper member 6, and when the stopper member 6 is in the unrestricted position, the nozzle member 3 communicates with the interior of the vertical supply tube portion 10, and when the stopper member 6 is in the restricted position, the nozzle member 3 blocks communication between the nozzle holes 3a and the interior of the vertical supply tube portion 10. According to this configuration, when the stopper member 6 is in the unrestricted position, the rotation restricting portion 102b engages with the overcoming rib 130, maintaining a state in which liquid can be ejected, thereby preventing problems such as changes in the liquid ejection pattern during use.

[0061] Furthermore, in this embodiment, the overriding rib 130 includes a slope 131 that is inclined in a radial direction intersecting the rotation center axis (axis O2) of the stopper member 6 so as to approach the rotation restricting portion 102b as it moves in a second rotation direction R2 that is opposite to the first rotation direction R1. With this configuration, the rotation resistance gradually increases as the stopper member 6 approaches the end point of its rotation, so that the momentum of the rotation just before the rotation restricting portion 102b abuts against the abutment wall 128 can be reduced. As a result, overrun of the stopper member 6 can be suppressed.

[0062] 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.

[0063] For example, in the above embodiment, the nozzle member 3 and the stopper member 6 are separate members, but the nozzle member 3 and the stopper member 6 may be integrated. Furthermore, for example, in the above embodiment, the relay member 100 is provided with the rotation restricting portion 102b, but the relay member 100 may be integrated with the injection tube portion 72. [Explanation of symbols]

[0064] 1 trigger-type liquid jet 2 Squirt body 3 Nozzle member 3a spout hole 4 Cover body 5 Trigger member 6 Stopper member 10 Vertical supply tube 11 Pipe 20 Connecting tube 21 Occlusion 30 Mounting cap 32 Cylinder tube 40 Pump section 41 Main cylinder 42 Main piston 43 coil spring 50 Ball Valve 60 Reservoir valve 70 Storage cylinder 70a Storage space 71 Supply hole 72 Injection cylinder part 80 Reservoir plunger 81 Trigger section 90 Plunger biasing member 100 relay member 101 First relay tube 102 Partition part 102a Communication hole 102b Rotation restriction part 103 Guide shaft 104 Second relay tube 110 Mounting tube 111 nozzle wall 112 First nozzle inner cylinder 113 Second nozzle inner cylinder 114 Spin Channel 115 Nozzle cylinder 121 Stopper body cylindrical part 122 Stopper regulation part 122a Locking piece 123 Stopper connection part 124 Tapered section 124a opening 125 flange 125a Annular groove 128 End Wall 129 Rotation control piece 130 Rib 131 Slope 132 steps A Container body O1 axis O2 axis O3 axis R1 First rotation direction R2 Second rotation direction

Claims

1. a jetting device body that is attached to a container body containing a liquid and has a vertical supply tube part that sucks up the liquid in the container body; a nozzle member attached to the ejector body and having an ejection hole formed therein for ejecting liquid; a trigger member that is disposed on the ejector body in a forward biased state and movable rearward, and that causes liquid to flow from inside the vertical supply cylindrical portion to the ejection hole when the trigger member is moved rearward; a stopper member attached to the nozzle member and rotatable between a restricting position that restricts rearward movement of the trigger member and a restricting release position that allows rearward movement of the trigger member, the ejector body includes a rotation restricting portion that restricts rotation of the stopper member, The stopper member is an abutment wall that abuts against the rotation restricting portion in a first rotation direction from the restricting position toward the restricting position when the restricting portion is located at the restriction release position; a climbing rib that is disposed forward of the abutment wall in the first rotation direction and that the rotation restricting portion slides over in contact with, Trigger-type liquid squirt.

2. the nozzle member is rotatably provided with respect to the ejector body together with the stopper member, and when the stopper member is located at the restriction release position, the nozzle member communicates with the interior of the vertical supply cylindrical portion, and when the stopper member is located at the restriction position, the nozzle member blocks communication between the ejection hole and the interior of the vertical supply cylindrical portion. The trigger-type liquid ejector according to claim 1 .

3. the overcoming rib has a slope that is inclined in a radial direction intersecting with the rotation center axis of the stopper member so as to approach the rotation restricting portion toward a second rotation direction opposite to the first rotation direction, 3. The trigger-type liquid ejector according to claim 1 or 2.

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