Trigger-type liquid dispenser

Abstract

To provide a trigger type liquid ejector capable of suppressing the connection between a trigger member and a piston from being released.SOLUTION: The trigger-type liquid dispenser 1 includes the trigger member 5 that is coupled to the piston and is disposed so as to be movable rearward in the forward-biased state, the trigger member 5 being configured to move rearward to cause the liquid in the cylinder to flow toward the 3a of the dispensing hole, and the stopper member 6 that is rotatable between the restriction position at which the rearward movement of the trigger member 5 is restricted and the restriction release position at which the rearward movement of the trigger member 5 is allowed. 110, the stopper member 6 is provided with a wall part 124 which covers at least a part of the opening part 110 from the front side when the stopper member 6 is located at the restriction position.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 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, an opening is formed in the trigger member. A connecting shaft is provided within this opening, and the front end of a piston inserted into the opening is connected to the connecting shaft. However, when such a trigger-type liquid sprayer is transported with the rearward movement of the trigger member restricted, if any member (such as an enclosed pipe member) is inserted into the opening of the trigger member from the front, the piston may be pushed rearward, causing the connection between the trigger member and the piston to be released.

[0005] The present invention has been made in consideration of the above circumstances, and its purpose is to provide a trigger-type liquid ejector that can prevent the connection between the trigger member and the piston from being released. [Means for solving the problem]

[0006] (1) The trigger-type liquid ejector of 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 formed therein for ejecting the liquid, and a stopper member rotatable around the nozzle axis of the nozzle member, wherein the ejector body comprises a vertical supply tube section that sucks up the liquid in the container body, a cylinder that is connected to the vertical supply tube section and opens forward, a piston that fits within the cylinder so as to be able to slide back and forth, and a trigger member that is connected to the piston and arranged so as to be able to move rearward in a forward-biased state, and whose rearward movement causes the liquid in the cylinder to flow toward the ejection hole, wherein the stopper member is rotatable between a restricting position that restricts the rearward movement of the trigger member and a restricting release position that allows the rearward movement of the trigger member, wherein the trigger member has an opening that opens forward at the part to which the piston is connected, and the stopper member has a wall portion that covers at least a part of the opening from the front when positioned in the restricting position.

[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. The stopper member has a wall that covers at least a portion of the opening of the trigger portion from the front when the stopper member is in the restricted position. This prevents any member from being inserted into the opening from the front while the rearward movement of the trigger member is restricted. This prevents the connection between the trigger member and the piston that are connected within the opening from being released.

[0008] (2) The stopper member includes a stopper cylindrical portion that is rotatable around the nozzle axis, a stopper regulating portion that is located behind the trigger member when located at the regulating position and that detaches from the rear of the trigger member when located at the deregulating position, and a stopper connecting portion that connects the stopper cylindrical portion and the stopper regulating portion, and the wall portion may be formed in a rib shape that connects the peripheral wall of the stopper cylindrical portion and the side wall of the stopper connecting portion.

[0009] In this case, the wall portion functions as a reinforcing rib for the stopper member, thereby increasing the strength of the stopper member and suppressing deformation of the stopper member.

[0010] (3) The ejector body may include an outside air introduction passage that penetrates the cylinder in a radial direction and introduces outside air into the container body.

[0011] In this case, the presence of an outside air introduction passage allows the reduced pressure inside the container to be quickly released, making it easier to suck up the liquid. [Effects of the Invention]

[0012] According to the trigger-type liquid ejector of the present invention, the connection between the trigger member and the piston can be prevented from being released. [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] 1 is a front view of a trigger-type liquid ejector according to an embodiment of the present invention; [Figure 3] 1 is a perspective view of a trigger-type liquid ejector when a stopper member according to an embodiment of the present invention is located in a restricted position. FIG. [Figure 4] 1 is a perspective view of a trigger-type liquid ejector when a stopper member according to an embodiment of the present invention is located in a 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 ejector 1 of this embodiment comprises an ejector body 2 that is attached to a container body A containing liquid, a nozzle member 3 that is attached to the ejector body 2 and has an ejection hole 3a formed therein for ejecting the liquid, and a cover body 4 that covers the ejector body 2.

[0016] The ejector body 2 is provided with a trigger member 5 which is arranged to be movable rearward while being biased forward, and which, when moved rearward, causes the liquid to flow from the container body A to the nozzle member 3. The nozzle member 3 is fitted with a stopper member 6 which is movable between a restricting position which restricts the rearward movement of the trigger member 5 and a non-restricting position which 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.

[0017] 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.

[0018] 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.

[0019] In this embodiment, the axis passing through the center of the ejection hole 3a of the nozzle member 3 is defined as the axis O2. The axis O2 extends in the front-rear direction. In this embodiment, the front-rear direction corresponds to the nozzle axis direction along the central axis of the ejection hole 3a. Furthermore, in this embodiment, the central axis of the storage cylinder 70 is defined as the axis O3. In this embodiment, the axis O3 is located below the axis O2 and extends in the front-rear direction. However, the axis O2 and the axis O3 do not have to coincide with each other.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] The pump section 40 includes a main cylinder 41 (cylinder), a main piston 42 (piston), and a coil spring 43 (biasing member). When the trigger member 5 swings rearward, the pump section 40 can cause the liquid in the main cylinder 41 to flow from the vertical supply tube section 10 through the connecting tube section 20 toward the ejection hole 3a.

[0024] The main piston 42 is fitted 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 cylindrical shape with a top that is open at the rear and closed at the front.

[0025] 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.

[0026] 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.

[0027] The ejector body 2 is provided with an outside air introduction passage 7 that radially penetrates the main cylinder 41 and introduces outside air into the container body A. The outside air introduction passage 7 includes a first air hole 7a formed in the main cylinder 41, a second air hole 7b formed in the cylinder tubular portion 32, and a third air hole 7c formed in the flange portion of the vertical supply tubular portion 10.

[0028] The first air hole 7a communicates between the inside of the main cylinder 41 and the gap between the main cylinder 41 and the cylinder tube portion 32. The first air hole 7a is blocked by the sliding portion of the main piston 42, which is located at the frontmost position. The second air hole 7b communicates between the gap between the main cylinder 41 and the cylinder tube portion 32 and the gap between the cylinder tube portion 32 and the vertical supply tube portion 10.

[0029] The third air hole 7c connects the gap between the cylinder tube portion 32 and the vertical supply tube portion 10 to the inside of the container body A. As a result, the first air hole 7a is open to the outside until the main piston 42 is pushed rearward and returns to its frontmost position, so that outside air is introduced into the container body A through the outside air introduction passage 7 as the liquid in the container body A is sucked up into the vertical supply tube portion 10.

[0030] 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.

[0031] A storage valve 60 is disposed above the ball valve 50. The storage valve 60 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 70, and also prevents liquid from flowing from the storage cylinder 70 through the connecting tube portion 20 into the vertical supply tube portion 10.

[0032] 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.

[0033] 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.

[0034] The trigger member 5 includes a pair of left and right side walls, a front wall connecting the pair of left and right side walls, and a plurality of reinforcing ribs behind the front wall connecting the front wall and the pair of left and right side walls. An opening 110 is formed in the front wall of the trigger member 5. A connecting shaft 111 is provided within the opening 110 and is connected to the front end of the main piston 42 inserted into the opening 110. The opening 110 is a hole for removing the mold that molds the connecting shaft 111.

[0035] The front end of the main piston 42 protrudes to the outside from the front opening of the main cylinder 41. A pair of recesses 42a recessed in the left-right direction are formed in the front end of the main piston 42. The recesses 42a extend in the up-down direction and are formed in a generally arc-like or generally crescent-like shape that convex rearward. A pair of connecting shafts 111 provided on the trigger member 5 are inserted into the recesses 42a from the left-right direction.

[0036] 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).

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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 is attached to the second relay cylindrical portion 104 so as to be rotatable about the axis O2 while being prevented from slipping out in the forward direction. The nozzle member 3 can be rotated about the axis O2 to switch between communication between the ejection hole 3a and the inside of the ejection cylindrical portion 72 and communication between the ejection hole 3a and the inside of the ejection cylindrical portion 72.

[0048] The stopper member 6 is rotatable around the axis O2 together with the nozzle member 3. The stopper member 6 includes a stopper cylindrical portion 121, a stopper connecting portion 122, and a stopper restricting portion 123. The stopper cylindrical portion 121 is attached to the radially outer side of the nozzle member 3, and rotates together with the nozzle member 3 around the central axis of the ejection hole 3a.

[0049] The stopper restricting portion 123 is interposed between the trigger member 5 and the ejector main body 2 when the stopper member 6 is located at the restricting position shown in Figures 1 to 3, and is removed from between the trigger member 5 and the ejector main body 2 when the stopper member 6 is located at the restriction release position shown in Figure 4. When the stopper restricting portion 123 is located at the restricting position that restricts the rearward movement of the trigger member 5, it is disposed in the gap in the front-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 Figure 1.

[0050] The stopper restricting portion 123 restricts the rearward swing of the trigger member 5 by abutting against both the trigger member 5 and the main cylinder 41. As shown in the front view of Fig. 2, a locking piece 123a protrudes forward from the front surface of the stopper restricting portion 123, and locks in the left-right direction on the rear side of the trigger member 5. This prevents the stopper member 6 from easily rotating from the restricted position to the released position.

[0051] The stopper connecting portion 122 connects the stopper cylindrical portion 121 and the stopper restricting portion 123. As shown in FIG. 2, the stopper connecting portion 122 is formed in the shape of an arm extending radially outward from the peripheral wall of the stopper cylindrical portion 121. The stopper restricting portion 123 is provided at the radially outer end of the stopper connecting portion 122 toward the tangential direction of the rotational orbit (toward the inside in the left-right direction in the state shown in FIG. 2). The stopper connecting portion 122 is formed integrally with the stopper cylindrical portion 121 and the stopper restricting portion 123, and is rotatable together with the nozzle member 3.

[0052] The stopper member 6 is provided with a wall portion 124 that covers at least a portion of the opening 110 of the trigger member 5 from the front when the stopper member 6 is located in the restricting position as shown in Fig. 2. The wall portion 124 in this embodiment covers 90% or more of the opening area of ​​the opening 110. The wall portion 124 may cover the entire opening area of ​​the opening 110. Furthermore, when it is expected to some extent that an object may enter the opening 110, for example, when it is a pipe member, the wall portion 124 only needs to cover at least two-thirds of the opening area of ​​the opening 110.

[0053] The wall portion 124 is formed in a rib shape that connects the peripheral wall of the stopper cylindrical portion 121 and the side wall of the stopper connecting portion 122. Specifically, the wall portion 124 extends downward from the peripheral wall of the stopper cylindrical portion 121 and is connected to the side wall of the stopper connecting portion 122 that faces inward in the left-right direction. This allows the wall portion 124 to function as a reinforcing rib, thereby increasing the strength of the stopper member 6.

[0054] 3, a bent portion 124a that is bent forward is formed at the lower end of the wall portion 124. By providing the bent portion 124a in the wall portion 124 in this manner, the second moment of area of ​​the wall portion 124 can be increased. This further increases the strength of the stopper member 6, making it possible to suppress deformation of the stopper member 6.

[0055] Next, a case where the trigger-type liquid ejector 1 configured as described above is used will be described.

[0056] First, to use the trigger-type liquid ejector 1, the stopper member 6 is rotated from the restricting position shown in Fig. 3 to the unrestricted position shown in Fig. 4. For example, the stopper connecting part 122 shown in Fig. 3 is grasped and rotated upward. When the stopper connecting part 122 is rotated upward, the stopper restricting part 123 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.

[0057] Next, the trigger member 5 is pulled backward against the biasing force of the coil spring 43. It is assumed that by operating the trigger member 5 multiple times, liquid is filled into each part of the trigger-type liquid sprayer 1, and the liquid can be sucked up into the vertical supply tube part 10.

[0058] When the trigger member 5 is pulled rearward against the biasing force of the coil spring 43, the main piston 42 moves rearward from the forwardmost position, and pressure is applied inside the main cylinder 41. As a result, the liquid inside the main 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.

[0059] 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.

[0060] As described above, each time the trigger member 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.

[0061] When the trigger member 5 is subsequently released, the trigger member 5 returns to its original position forward due to the elastic restoring force (biasing force) of the coil spring 43, and the main piston 42 connected to the trigger member 5 also returns to its original position forward within the main cylinder 41. This reduces the pressure within the main cylinder 41 to a pressure lower than that within the container body A, allowing the ball valve 50 to rise while the storage valve 60 remains closed. This allows the liquid within the container body A to be sucked up into the vertical supply tube portion 10 and introduced into the main cylinder 41. This allows preparation for the next eruption.

[0062] Furthermore, when the rearward operation of the trigger member 5 is stopped, the supply of liquid to the storage space 70a through the vertical supply tube portion 10 and the connecting tube portion 20 stops, 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.

[0063] 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 member 5 is pulled rearward, but also when the trigger member 5 is not operated, and liquid can be ejected continuously.

[0064] As described above, according to the trigger-type liquid sprayer 1 of this embodiment, the trigger member 5 can be moved backward by rotating the stopper member 6 from the restricting position to the unrestricting position. When the trigger member 5 is operated to move backward, the vertical supply tube portion 10 sucks up the liquid inside the container body A and the liquid can be sprayed out through the spray holes 3a. 2, the stopper member 6 is provided with a wall portion 124 that covers at least a portion of the opening 110 of the trigger portion from the front when the stopper member 6 is in the restricted position. This makes it possible to prevent any member from being inserted into the opening 110 from the front while the rearward movement of the trigger member 5 is restricted. This makes it possible to prevent the connection between the trigger member 5 and the main piston 42, which are connected within the opening 110, from being released.

[0065] As explained above, the trigger-type liquid ejector 1 of this embodiment comprises the ejector main body 2 attached to the container body A containing the liquid, the nozzle member 3 attached to the ejector main body 2 and having the ejection holes 3a for ejecting the liquid formed therein, and the stopper member 6 rotatable around the nozzle axis of the nozzle member 3. The ejector main body 2 comprises the vertical supply tube portion 10 for sucking up the liquid in the container body A, the main cylinder 41 communicating with the vertical supply tube portion 10 and opening forward, the main piston 42 fitted in the main cylinder 41 so as to be slidable back and forth, and the stopper member 6 connected to the main piston 42 and configured to be in a forward biased state. and a trigger member 5 arranged so as to be movable rearward, the rearward movement of which causes the liquid in the main cylinder 41 to flow toward the ejection holes 3a, the stopper member 6 being rotatable between a restricting position which restricts the rearward movement of the trigger member 5 and a non-restricting position which allows the rearward movement of the trigger member 5, the trigger member 5 being provided with an opening 110 which opens forward at a portion to which the main piston 42 is connected, and the stopper member 6 being provided with a wall 124 which covers at least a portion of the opening 110 from the front when the stopper member 6 is in the restricting position. This configuration makes it possible to prevent the connection between the trigger member 5 and the main piston 42 from being released.

[0066] Moreover, in this embodiment, the stopper member 6 includes a stopper tubular portion 121 that is rotatable around the nozzle axis, a stopper restricting portion 123 that is located behind the trigger member 5 when located in the restricting position and that is separated from the rear of the trigger member 5 when located in the unrestricted position, and a stopper connecting portion 122 that connects the stopper tubular portion 121 and the stopper restricting portion 123, and the wall portion 124 is formed in a rib shape that connects the peripheral wall of the stopper tubular portion 121 and the side wall of the stopper connecting portion 122. With this configuration, the wall portion 124 functions as a reinforcing rib for the stopper member 6, thereby increasing the strength of the stopper member 6 and suppressing deformation of the stopper member 6.

[0067] Furthermore, in this embodiment, the ejector main body 2 is provided with an outside air introduction passage 7 that radially penetrates the main cylinder 41 and introduces outside air into the container body A. With this configuration, the presence of the outside air introduction passage 7 allows the reduced pressure inside the container body A to be quickly released, making it easier to suck up the liquid. Furthermore, because the wall portion 124 prevents the trigger member 5 and the main piston 42 from being disconnected, even if the trigger-type liquid ejector 1 is turned on its side, it is possible to prevent liquid from leaking from the container body A via the outside air introduction passage 7.

[0068] 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.

[0069] For example, in the above embodiment, a trigger-type liquid sprayer 1 was described that is equipped with a storage cylinder 70, a storage plunger 80, and a plunger biasing member 90 and is capable of continuous spraying of liquid, but the present invention can also be applied to a normal trigger-type liquid sprayer that does not have a storage cylinder 70, a storage plunger 80, and a plunger biasing member 90. [Explanation of symbols]

[0070] 1 trigger-type liquid jet 2 Squirt body 3 Nozzle member 3a spout hole 4 Cover body 5 Trigger member 6 Stopper member 7. Fresh air intake passage 7a First air vent 7b Second air vent 7c 3rd air hole 10 Vertical supply tube 11 Pipe 20 Connecting tube 21 Occlusion 30 Mounting cap 32 Cylinder tube 40 Pump section 41 Main cylinder (cylinder) 42 Main piston (piston) 42a depression 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 90 Plunger biasing member 100 relay member 101 First relay tube 102 Partition part 102a Communication hole 103 Guide shaft 104 Second relay tube 110 Opening 111 Connecting shaft 121 Stopper cylinder 122 Stopper connection part 123 Stopper regulation part 123a Locking piece 124 Wall 124a Bend section A Container body O1 axis O2 axis O3 axis

Claims

1. an ejector body attached to a container containing a liquid; a nozzle member attached to the ejector body and having an ejection hole formed therein for ejecting liquid; a stopper member rotatable around the nozzle axis of the nozzle member, The ejector body includes: a vertical supply tube portion that sucks up the liquid in the container body; a cylinder communicating with the vertical supply tube portion and opening forward; a piston fitted in the cylinder so as to be slidable back and forth; a trigger member connected to the piston and arranged to be movable rearward in a forward biased state, the trigger member causing the liquid in the cylinder to flow toward the ejection hole when moved rearward; the stopper member is 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 trigger member has an opening that opens forward at a portion to which the piston is connected, The stopper member is provided with a wall portion that covers at least a portion of the opening from the front when the stopper member is located at the restricting position. Trigger-type liquid squirt.

2. The stopper member is a stopper cylindrical portion rotatable around the nozzle axis; a stopper restricting portion that is located behind the trigger member when the trigger is positioned at the restricting position and that is separated from the rear of the trigger member when the trigger is positioned at the restriction release position; a stopper connecting portion that connects the stopper tubular portion and the stopper restricting portion, The wall portion is formed in a rib shape connecting the peripheral wall of the stopper cylindrical portion and the side wall of the stopper connecting portion. The trigger-type liquid ejector according to claim 1 .

3. The ejector body has an outside air introduction passage that penetrates the cylinder in a radial direction and introduces outside air into the container body.

3. The trigger-type liquid ejector according to claim 1 or 2.

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